CN111558620A - A kind of replacement method of rolling mill backup roll - Google Patents

Abstract

Translated fromChinese

本发明保护了一种轧机支承辊的更换方法，在轧机轨道上布设在线车，使在线车位于旧下支承辊的正下方，在线车在常态下位于辊系下方，即长期处于轧机本体内部，将在线车所占用的巨大空间与轧机本体的空间相重叠，节省了大量的空间且结构极为紧凑；在轧机外的坑洞内铺设与轧机轨道相接的换辊轨道，换辊轨道上布设离线车，离线车的顶部铰接于安全操作平台的端部，安全操作平台覆盖坑洞并滑动悬挂于换辊车的底部，换辊车为工作辊换辊车或中间辊换辊车，利用工作辊换辊车或中间辊换辊车作为驱动装置，对安全操作平台等拖拉实现其移动，而未配置独立的驱动装置，避免了换支承辊系统的驱动装置及相应液压元器件的长期闲置并有效实现了节约能源。

The invention protects a method for replacing the backup rolls of a rolling mill. An on-line car is arranged on the rolling mill track, so that the on-line car is located directly under the old lower backup roll. The huge space occupied by the online car is overlapped with the space of the rolling mill body, which saves a lot of space and has a very compact structure; the roll changing track connected to the rolling mill track is laid in the pothole outside the rolling mill, and the line is laid on the roll changing track. The top of the off-line car is hinged to the end of the safety operation platform. The safety operation platform covers the pothole and is slidably suspended on the bottom of the roll changing car. The roll changing car is a work roll changing car or an intermediate roll changing car. The roller changing car or the intermediate roller changing car is used as the driving device to realize the movement of the safety operation platform, etc., and is not equipped with an independent driving device, which avoids the long-term idle of the driving device and the corresponding hydraulic components of the backup roller system and is effective. Energy saving is achieved.

Description

Translated fromChinese

一种轧机支承辊的更换方法A kind of replacement method of rolling mill backup roll

技术领域technical field

本发明属于轧机换辊领域，具体涉及一种轧机支承辊的更换方法，特别适用于铝轧机。The invention belongs to the field of rolling mill roll changing, in particular to a method for replacing a rolling mill backup roll, which is especially suitable for an aluminum rolling mill.

背景技术Background technique

随着铝材在国防、军工、家电和微电子领域的广泛应用，铝带轧机及其相关零部件的研究日益受到重视，由于铝的特殊材料特性，铝带轧机与常规钢带轧机的设备特性和加工工艺有着诸多不同，如作为铝带轧机最核心的零部件之一，换支承辊系统的重要特性是低速重载、体积巨大和使用频率低。With the wide application of aluminum in the fields of national defense, military industry, home appliances and microelectronics, the research on aluminum strip mills and related parts has been paid more and more attention. Due to the special material properties of aluminum, the equipment characteristics of aluminum strip mills and conventional steel strip mills There are many differences from the processing technology. For example, as one of the core components of the aluminum strip mill, the important characteristics of the backup roll replacement system are low speed and heavy load, huge volume and low frequency of use.

传统铝轧机的换支承辊系统与钢轧机的换支承辊系统极为相似——轧制状态时设备全部处于轧机的外部，而且换支承辊系统及其安全操作平台无连接关系并分别配置独立的驱动装置和复杂的执行机构，由于未充分考虑铝带轧机的自身特性，此类型的换支承辊系统在实际生产和应用中暴露了如下严重问题：The back-up roll changing system of a traditional aluminum rolling mill is very similar to that of a steel rolling mill—the equipment is all outside the rolling mill in the rolling state, and the back-up roll changing system and its safety operating platform are not connected and are equipped with independent drives. Due to the lack of sufficient consideration of the characteristics of the aluminum strip mill, this type of backup roll replacement system exposes the following serious problems in actual production and application:

（1）占地空间大(1) It occupies a large space

由于铝带轧机需要大刚性的支承辊才可以满足产品的板型和板厚要求，因而相应的换支承辊系统的体积一般也较大，但是传统铝轧机换支承辊系统长期处于轧机外部，这造成了该系统在换辊方向的占地空间巨大；Since the aluminum strip rolling mill needs large rigid backup rolls to meet the requirements of the shape and thickness of the product, the corresponding backup roll replacement system is generally larger in size, but the traditional aluminum rolling mill replacement backup roll system has been outside the rolling mill for a long time. As a result, the system occupies a huge space in the roll changing direction;

传统的换支承辊系统一般由长行程油缸驱动并使其靠近或远离轧机，这进一步加剧了换支承辊系统在该方向的占地空间，如此布局，不仅造成了极大的占地浪费而且相应的土建施工量非常大。The traditional back-up roll changing system is generally driven by a long-stroke oil cylinder and makes it close to or away from the rolling mill, which further aggravates the space occupied by the back-up roll changing system in this direction. The amount of civil construction is very large.

（2）能源浪费(2) Energy waste

相比于铝轧机换工作辊和换中间辊系统的每天三次的使用频率，其换支承辊系统的使用频率很低，这是因为支承辊的辊面不与铝带直接接触，因而换支承辊系统大约每月只需对其执行一次换辊操作，因此传统的铝轧机换支承辊系统的长行程油缸长期处于闲置状态，造成为该油缸所配置的液压元器件和相应管路也长期不能充分发挥作用，这造成了极大的能源浪费。Compared with the frequency of changing the work roll and changing the intermediate roll system three times a day in the aluminum rolling mill, the frequency of changing the backup roll system is very low, because the roll surface of the backup roll is not in direct contact with the aluminum strip, so changing the backup roll The system only needs to perform a roll change operation about once a month. Therefore, the long-stroke oil cylinder of the traditional aluminum rolling mill changing backup roll system is in an idle state for a long time, resulting in the hydraulic components and corresponding pipelines configured for the oil cylinder can not be sufficient for a long time. function, which results in a huge waste of energy.

发明内容SUMMARY OF THE INVENTION

本发明实施方式的目的在于提供一种轧机支承辊的更换方法，以克服上述技术缺陷。The purpose of the embodiments of the present invention is to provide a method for replacing a backup roll of a rolling mill, so as to overcome the above-mentioned technical defects.

为解决上述技术问题，本发明提供了一种轧机支承辊的更换方法，包括如下步骤：In order to solve the above-mentioned technical problems, the present invention provides a method for replacing a backup roll of a rolling mill, comprising the following steps:

步骤一，初始状态Step 1, the initial state

在轧机轨道上布设在线车，使在线车位于旧下支承辊的正下方，且轧机的主液压缸或轧线调整装置可穿过在线车并伸出接触旧下支承辊或缩回脱离旧下支承辊；Route the wire car on the rolling mill track so that the wire car is directly below the old lower backup roll, and the main hydraulic cylinder of the rolling mill or the wire adjustment device can pass through the wire car and extend to contact the old lower backup roll or retract away from the old lower backup roll backup roller;

在轧机外的坑洞内铺设与轧机轨道相接的换辊轨道，换辊轨道上布设离线车，离线车的顶部铰接于安全操作平台的端部，安全操作平台覆盖坑洞并滑动悬挂于换辊车的底部，换辊车为工作辊换辊车或中间辊换辊车；A roll changing track connected to the rolling mill track is laid in the pothole outside the rolling mill, and an off-line car is arranged on the roll changing track. The top of the off-line car is hinged to the end of the safety operation platform. The safety operation platform covers the pothole and slides and hangs on the changer. At the bottom of the roll car, the roll change car is a work roll change car or an intermediate roll change car;

在初始状态，安全操作平台、离线车和在线车均位于各自的前极限位置，换辊车位于它的后极限位置；In the initial state, the safety operation platform, the off-line car and the on-line car are all located at their respective front limit positions, and the roll changing car is at its rear limit position;

步骤二，换辊状态Step 2, roll change status

步骤001.关停轧机，拖移工作辊和中间辊至轧机生产线外；Step 001. Shut down the rolling mill, and drag the work rolls and intermediate rolls to the outside of the rolling mill production line;

步骤002.驱动主液压缸或轧线调整装置，使其从在线车内缩回，直至主液压缸或轧线调整装置与旧下支承辊分离，旧下支承辊下降并固定于在线车，在线车连接离线车；Step 002. Drive the main hydraulic cylinder or the rolling line adjustment device to retract from the in-line car, until the main hydraulic cylinder or the rolling line adjustment device is separated from the old lower back-up roll, the old lower back-up roll is lowered and fixed on the in-line car, on-line The car is connected to the offline car;

步骤003.换辊车向靠近轧机的方向移动直至到达它的前极限位置，可拆卸地连接安全操作平台和换辊车，换辊车带动安全操作平台向背离轧机的方向移动，直至安全操作平台、离线车和在线车连接而成的整体到达后极限位置，在线车由轧机轨道换到换辊轨道；Step 003. Move the roll changing car to the direction close to the rolling mill until it reaches its front limit position, detachably connect the safety operation platform and the roll changing car, and the roll changing car drives the safety operation platform to move in the direction away from the rolling mill until the safety operation platform , The whole connected by the off-line car and the on-line car reaches the limit position, and the on-line car is changed from the rolling mill track to the roll changing track;

步骤004.吊装换辊支架并固定在旧下支承辊上；Step 004. Lift the roller replacement bracket and fix it on the old lower backup roller;

步骤005.换辊车带动安全操作平台向靠近轧机的方向移动，直至安全操作平台、离线车和在线车连接而成的整体到达前极限位置，旧上支承辊8下降并固定于换辊支架；Step 005. The roll changing car drives the safety operation platform to move in the direction close to the rolling mill, until the whole connected by the safety operation platform, the off-line car and the on-line car reaches the front limit position, and the oldupper backup roll 8 is lowered and fixed on the roll changing bracket;

步骤006.换辊车带动安全操作平台向背离轧机的方向移动，直至安全操作平台、离线车和在线车连接而成的整体到达后极限位置；Step 006. The roll changing car drives the safety operation platform to move in the direction away from the rolling mill, until the whole connected by the safety operation platform, the off-line car and the on-line car reaches the rear limit position;

步骤007.吊离换辊支架、旧上支承辊8和旧下支承辊；Step 007. Lift off the roller changing bracket, the oldupper backup roller 8 and the old lower backup roller;

步骤008.吊装新下支承辊并固定于在线车、吊装换辊支架固定于新下支承辊、吊装新上支承辊固定于换辊支架；Step 008. Hoist the new lower support roller and fix it on the online car, hoist the roller changing bracket and fix it on the new lower backup roller, and hoist the new upper backup roller and fix it on the roller changing bracket;

步骤009.换辊车带动安全操作平台向靠近轧机的方向移动，直至安全操作平台、离线车和在线车连接而成的整体到达前极限位置；Step 009. The roll changing car drives the safety operation platform to move towards the direction close to the rolling mill, until the whole connected by the safety operation platform, the off-line car and the on-line car reaches the front limit position;

步骤010.新上支承辊上升脱离换辊支架，安装新上支承辊于轧机；Step 010. The new upper backup roll is lifted and separated from the roll changing bracket, and the new upper backup roll is installed in the rolling mill;

步骤011.换辊车带动安全操作平台向背离轧机的方向移动，直至安全操作平台、离线车和在线车连接而成的整体到达后极限位置；Step 011. The roll changing car drives the safety operation platform to move in the direction away from the rolling mill, until the whole connected by the safety operation platform, the off-line car and the on-line car reaches the rear limit position;

步骤012.吊离换辊支架；Step 012. Lift off the roller changing bracket;

步骤013.换辊车带动安全操作平台向靠近轧机的方向移动，直至安全操作平台、离线车和在线车连接而成的整体到达前极限位置，使在线车位于新上支承辊的正下方；Step 013. The roll changing car drives the safety operation platform to move in the direction close to the rolling mill, until the whole connected by the safety operation platform, the off-line car and the on-line car reaches the front limit position, so that the on-line car is located directly below the new upper support roller;

步骤014.轧机的主液压缸或轧线调整装置穿过在线车并伸出接触新下支承辊，安装新下支承辊于轧机；Step 014. The main hydraulic cylinder of the rolling mill or the rolling line adjustment device passes through the on-line car and extends to contact the new lower backup roll, and installs the new lower backup roll on the rolling mill;

步骤015.轧机支承辊更换完毕，回至初始状态；Step 015. After the replacement of the backup roll of the rolling mill is completed, return to the initial state;

其中，步骤一所述的前极限位置和步骤二所述的前极限位置，均是指沿换辊轨道或轧机轨道向靠近轧机的方向移动所能到达的极限位置；步骤一所述的后极限位置和步骤二所述的后极限位置，均是指沿换辊轨道或轧机轨道向背离轧机的方向移动所能到达的极限位置。Wherein, the front limit position described in step 1 and the front limit position described instep 2 both refer to the limit position that can be reached by moving along the roll changing track or rolling mill track in the direction close to the rolling mill; the rear limit position described in step 1 The position and the rear limit position mentioned instep 2 both refer to the limit position that can be reached by moving along the roll changing track or the rolling mill track in a direction away from the rolling mill.

进一步地，在线车是指位于轧机生产线内的小车，它为中空框架结构，且在线车有两辆，两辆线车之间通过连接架连接为可同速在换辊轨道或轧机轨道上移动的一体结构。Further, the in-line car refers to a trolley located in the rolling mill production line. It is a hollow frame structure, and there are two in-line cars. The two line cars are connected by a connecting frame so that they can move at the same speed on the roll changing track or the rolling mill track. the integrated structure.

优选地，每辆所述在线车的车架上对称布置两个圆锥销B，两个圆锥销B关于换辊轨道的长度方向中心线或轧机轨道的长度方向中心线对称分布，且两个圆锥销B的连线垂直于换辊轨道或轧机轨道，圆锥销B的直径为75mm～80mm，长度为350mm～360mm。Preferably, two tapered pins B are symmetrically arranged on the frame of each said wire car, and the two tapered pins B are symmetrically distributed with respect to the lengthwise centerline of the roll changing track or the lengthwise centerline of the rolling mill track, and the two tapered pins B are symmetrically arranged on the frame of each said wire car. The connection line of the pin B is perpendicular to the roll changing track or the rolling mill track, and the diameter of the tapered pin B is 75mm-80mm, and the length is 350mm-360mm.

进一步地，在线车通过圆锥销B与旧下支承辊的轴承座或新下支承辊的的轴承座插接，旧下支承辊的轴承座和新下支承辊的的轴承座分别开设有用于插入圆锥销B的孔，所述孔与圆锥销B的径向间隙为1mm～1.5mm。Further, the wire car is inserted into the bearing seat of the old lower backup roller or the bearing seat of the new lower backup roller through the tapered pin B, and the bearing seat of the old lower backup roller and the bearing seat of the new lower backup roller are respectively provided for insertion The hole of the tapered pin B, the radial clearance between the hole and the tapered pin B is 1 mm to 1.5 mm.

优选地，离线车是指位于轧机生产线外的小车，它的一端垂直向上延伸并与安全操作平台的端部铰接，另外一段与在线车通过紧固件可拆卸地连接。Preferably, the off-line car refers to a trolley located outside the rolling mill production line, one end of which extends vertically upward and is hinged with the end of the safety operating platform, and the other section is detachably connected to the on-line car through fasteners.

进一步地，换辊支架包括矩形的立板，立板的四个角分别固接一块托板，每块托板上设有两个圆柱销C，两个圆柱销C关于立板对称分布，圆柱销C的直径为80mm～85mm，长度为30mm～40mm。Further, the roller changing bracket includes a rectangular vertical plate, four corners of the vertical plate are respectively fixed to a supporting plate, each supporting plate is provided with two cylindrical pins C, and the two cylindrical pins C are symmetrically distributed about the vertical plate, and the cylindrical The diameter of the pin C is 80mm-85mm, and the length is 30mm-40mm.

优选地，换辊支架通过立板上方的两个圆柱销C与旧上支承辊8的轴承座或新上支承辊的轴承座插接，通过立板下方的两个圆柱销C与旧下支承辊的轴承座或新下支承辊的轴承座插接，每个轴承座上开设有用于插入圆柱销C的孔，所述孔与圆柱销C的径向间隙为0.1mm～0.5mm。Preferably, the roller changing bracket is inserted into the bearing seat of the old upper back-uproller 8 or the bearing seat of the new upper back-up roller through the two cylindrical pins C above the vertical plate, and is connected to the old lower support through the two cylindrical pins C below the vertical plate. The bearing seat of the roller or the bearing seat of the new lower support roller is inserted, each bearing seat is provided with a hole for inserting a cylindrical pin C, and the radial clearance between the hole and the cylindrical pin C is 0.1mm-0.5mm.

进一步地，安全操作平台的端部开设有用于与换辊车连接的连接孔A，连接孔A位于离线车的正上方。Further, the end of the safety operation platform is provided with a connecting hole A for connecting with the roll changing car, and the connecting hole A is located just above the off-line car.

优选地，换辊轨道固定于土建基础，换辊轨道的标高和截面与轧机轨道的标高和截面一致。Preferably, the roll changing track is fixed to the civil foundation, and the elevation and section of the roll changing track are the same as those of the rolling mill track.

本发明的有益效果如下：The beneficial effects of the present invention are as follows:

（1）利用工作辊换辊车或中间辊换辊车作为驱动装置，对安全操作平台等拖拉实现其移动，而未配置独立的驱动装置，避免了换支承辊系统的驱动装置及相应液压元器件的长期闲置并有效实现了节约能源。(1) Using the work roll changing car or the intermediate roll changing car as the driving device, the safety operation platform is dragged to realize its movement, and no independent driving device is configured, which avoids changing the driving device of the backup roll system and the corresponding hydraulic elements. Long-term inactivity of the device and effective energy savings.

（2）两个在线车在常态下位于辊系下方，即长期处于轧机本体内部，将在线车所占用的巨大空间与轧机本体的空间相重叠，节省了大量的空间且结构极为紧凑。(2) The two in-line cars are located below the roll system under normal conditions, that is, inside the rolling mill body for a long time, overlapping the huge space occupied by the in-line car with the space of the rolling mill body, saving a lot of space and having a very compact structure.

为让本发明的上述内容能更明显易懂，下文特举优选实施例，并结合附图，作详细说明如下。In order to make the above-mentioned content of the present invention more obvious and easy to understand, preferred embodiments are hereinafter described in detail with reference to the accompanying drawings.

附图说明Description of drawings

图1是轧机支承辊的更换方法的流程示意图。FIG. 1 is a schematic flow chart of a method for replacing backup rolls in a rolling mill.

图2是轧机支承辊的更换系统的结构示意图。FIG. 2 is a schematic structural diagram of a replacement system for a backup roll of a rolling mill.

图3是轧机支承辊的更换系统处于初始状态的结构示意图。FIG. 3 is a schematic structural diagram of the replacement system of the backup rolls of the rolling mill in an initial state.

图4是轧机支承辊的更换系统处于换辊状态的结构示意图。FIG. 4 is a schematic structural diagram of a rolling mill backup roll replacement system in a roll changing state.

附图标记说明：Description of reference numbers:

1.安全操作平台；2.离线车；3.在线车；4.连接架；5.换辊轨道；6.换辊支架；7.轧机轨道；8.旧上支承辊8；9.旧下支承辊；10.换辊车；1. Safe operation platform; 2. Off-line car; 3. On-line car; 4. Connecting frame; 5. Roll changing track; 6. Roll changing bracket; 7. Rolling mill track; Back-up roller; 10. Roller change car;

A.连接孔；B.圆锥销；C.圆柱销。A. Connecting hole; B. Tapered pin; C. Cylindrical pin.

具体实施方式Detailed ways

以下由特定的具体实施例说明本发明的实施方式，本领域技术人员可由本说明书所揭示的内容轻易地了解本发明的其他优点及功效。The embodiments of the present invention are described below by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

需说明的是，在本发明中，图中的上、下、左、右即视为本说明书中所述的轧机支承辊的更换方法的上、下、左、右。It should be noted that, in the present invention, the upper, lower, left and right in the figure are regarded as the upper, lower, left and right of the replacement method of the rolling mill backup roll described in this specification.

现参考附图介绍本发明的示例性实施方式，然而，本发明可以用许多不同的形式来实施，并且不局限于此处描述的实施例，提供这些实施例是为了详尽地且完全地公开本发明，并且向所属技术领域的技术人员充分传达本发明的范围。对于表示在附图中的示例性实施方式中的术语并不是对本发明的限定。在附图中，相同的单元/元件使用相同的附图标记。Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for the purpose of thorough and complete disclosure of the present invention invention, and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings are not intended to limit the invention. In the drawings, the same elements/elements are given the same reference numerals.

除非另有说明，此处使用的术语（包括科技术语）对所属技术领域的技术人员具有通常的理解含义。另外，可以理解的是，以通常使用的词典限定的术语，应当被理解为与其相关领域的语境具有一致的含义，而不应该被理解为理想化的或过于正式的意义。Unless otherwise defined, terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it is to be understood that terms defined in commonly used dictionaries should be construed as having meanings consistent with the context in the related art, and should not be construed as idealized or overly formal meanings.

第一实施方式：First Embodiment:

参照图1，本实施方式涉及一种轧机支承辊的更换方法，包括如下步骤：Referring to FIG. 1 , this embodiment relates to a method for replacing a backup roll of a rolling mill, including the following steps:

步骤一，初始状态：Step 1, initial state:

在轧机轨道7上布设在线车3，使在线车3位于旧下支承辊9的正下方，且轧机的主液压缸或轧线调整装置可穿过在线车3并伸出接触旧下支承辊9或缩回脱离旧下支承辊9；Thewire car 3 is arranged on the rollingmill track 7, so that thewire car 3 is located directly under the old lowerbackup roll 9, and the main hydraulic cylinder or the rolling line adjustment device of the rolling mill can pass through thewire car 3 and reach out to contact the old lowerbackup roll 9 or retracted away from the old lowerbackup roller 9;

在轧机外的坑洞内铺设与轧机轨道7相接的换辊轨道5，换辊轨道5上布设离线车2，如图2所示，离线车2的顶部铰接于安全操作平台1的端部，安全操作平台1覆盖坑洞并滑动悬挂于换辊车10的底部，换辊车10为工作辊换辊车或中间辊换辊车；Aroll changing track 5 connected to the rollingmill track 7 is laid in the pothole outside the rolling mill, and an off-line car 2 is arranged on theroll changing track 5. As shown in FIG. 2 , the top of the off-line car 2 is hinged to the end of the safety operation platform 1 , the safety operation platform 1 covers the pothole and is slidably suspended on the bottom of theroll changing car 10, and theroll changing car 10 is a work roll changing car or an intermediate roll changing car;

在初始状态，安全操作平台1、离线车2和在线车3均位于各自的前极限位置，换辊车10位于它的后极限位置；In the initial state, the safety operation platform 1, the off-line cart 2 and the on-line cart 3 are all at their respective front limit positions, and theroll changing cart 10 is at its rear limit position;

步骤二，换辊状态Step 2, roll change status

步骤001.关停轧机，拖移工作辊和中间辊至轧机生产线外；Step 001. Shut down the rolling mill, and drag the work rolls and intermediate rolls to the outside of the rolling mill production line;

步骤002.驱动主液压缸或轧线调整装置，使其从在线车3内缩回，直至主液压缸或轧线调整装置与旧下支承辊9分离，旧下支承辊9下降并固定于在线车3，在线车3连接离线车2；Step 002. Drive the main hydraulic cylinder or the rolling line adjustment device to retract from the in-line car 3 until the main hydraulic cylinder or the rolling line adjustment device is separated from the old lowerbackup roll 9, and the old lowerbackup roll 9 is lowered and fixed on the line.Car 3,online car 3 is connected tooffline car 2;

步骤003.换辊车10向靠近轧机的方向移动直至到达它的前极限位置，可拆卸地连接安全操作平台1和换辊车10，换辊车10带动安全操作平台1向背离轧机的方向移动，直至安全操作平台1、离线车2和在线车3连接而成的整体到达后极限位置，在线车3由轧机轨道7换到换辊轨道5；Step 003. Move theroll changing car 10 to the direction close to the rolling mill until it reaches its front limit position, detachably connect the safety operation platform 1 and theroll changing car 10, and theroll changing car 10 drives the safety operation platform 1 to move in the direction away from the rolling mill , until the safety operation platform 1, the off-line car 2 and the on-line car 3 are connected to the rear limit position, and the on-line car 3 is changed from the rollingmill track 7 to theroll changing track 5;

步骤004.吊装换辊支架6并固定在旧下支承辊9上；Step 004. Lift theroller changing bracket 6 and fix it on the oldlower support roller 9;

步骤005.换辊车10带动安全操作平台1向靠近轧机的方向移动，直至安全操作平台1、离线车2和在线车3连接而成的整体到达前极限位置，旧上支承辊88下降并固定于换辊支架6；Step 005. Theroll changing car 10 drives the safety operation platform 1 to move in the direction close to the rolling mill, until the whole connected by the safety operation platform 1, the off-line car 2 and the on-line car 3 reaches the front limit position, and the old upper backup roll 88 is lowered and fixed on theroller changing bracket 6;

步骤006.换辊车10带动安全操作平台1向背离轧机的方向移动，直至安全操作平台1、离线车2和在线车3连接而成的整体到达后极限位置；Step 006. Theroll changing car 10 drives the safety operation platform 1 to move in the direction away from the rolling mill, until the whole connected by the safety operation platform 1, the off-line car 2 and the on-line car 3 reaches the rear limit position;

步骤007.吊离换辊支架6、旧上支承辊88和旧下支承辊9；Step 007. Lift off theroller changing bracket 6, the old upper backup roller 88 and the old lowerbackup roller 9;

步骤008.吊装新下支承辊并固定于在线车3、吊装换辊支架6固定于新下支承辊、吊装新上支承辊固定于换辊支架6；Step 008. Hoist the new lower backup roller and fix it on theonline car 3, hoist theroller changing bracket 6 and fix it on the new lower backup roller, and hoist the new upper backup roller and fix it on theroller changing bracket 6;

步骤009.换辊车10带动安全操作平台1向靠近轧机的方向移动，直至安全操作平台1、离线车2和在线车3连接而成的整体到达前极限位置；Step 009. Theroll changing car 10 drives the safety operation platform 1 to move in the direction close to the rolling mill, until the whole connected by the safety operation platform 1, the off-line car 2 and the on-line car 3 reaches the front limit position;

步骤010.新上支承辊上升脱离换辊支架6，安装新上支承辊于轧机；Step 010. The new upper backup roll is lifted and separated from theroll changing bracket 6, and the new upper backup roll is installed in the rolling mill;

步骤011.换辊车10带动安全操作平台1向背离轧机的方向移动，直至安全操作平台1、离线车2和在线车3连接而成的整体到达后极限位置；Step 011. Theroll changing car 10 drives the safety operation platform 1 to move in the direction away from the rolling mill, until the whole connected by the safety operation platform 1, the off-line car 2 and the on-line car 3 reaches the rear limit position;

步骤012.吊离换辊支架6；Step 012. Lift off theroller changing bracket 6;

步骤013.换辊车10带动安全操作平台1向靠近轧机的方向移动，直至安全操作平台1、离线车2和在线车3连接而成的整体到达前极限位置，使在线车3位于新上支承辊的正下方；Step 013. Theroll changing car 10 drives the safety operation platform 1 to move in the direction close to the rolling mill, until the whole connected by the safety operation platform 1, the off-line car 2 and the on-line car 3 reaches the front limit position, so that the on-line car 3 is located on the new upper support directly below the roller;

步骤014.轧机的主液压缸或轧线调整装置穿过在线车3并伸出接触新下支承辊，安装新下支承辊于轧机；Step 014. The main hydraulic cylinder of the rolling mill or the rolling line adjustment device passes through the on-line car 3 and extends out to contact the new lower backup roll, and installs the new lower backup roll on the rolling mill;

步骤015.轧机支承辊更换完毕，回至初始状态；Step 015. After the replacement of the backup roll of the rolling mill is completed, return to the initial state;

其中，步骤一的前极限位置和步骤二的前极限位置，均是指沿换辊轨道5或轧机轨道7向靠近轧机的方向移动所能到达的极限位置；步骤一的后极限位置和步骤二的后极限位置，均是指沿换辊轨道5或轧机轨道7向背离轧机的方向移动所能到达的极限位置。Wherein, the front limit position of step 1 and the front limit position ofstep 2 both refer to the limit position that can be reached by moving along theroll changing track 5 or rollingmill track 7 in the direction close to the rolling mill; the rear limit position of step 1 andstep 2 The rear limit position refers to the limit position that can be reached by moving along theroll changing track 5 or the rollingmill track 7 in the direction away from the rolling mill.

初始状态即为非换辊状态，为更换系统的常态，此时安全操作平台1全部掩盖地面坑洞以保证其他相关操作的安全，如图3所示，安全操作平台1与换辊车10处于脱开状态，换辊车10处于后极限位置，离线车2处于轧机本体的外部，而且离线车2的车轮位于换辊轨道5上，在线车3处于轧机本体的内部，在线车3的车轮位于轧机轨道7（轧机本体的机内轨道）上，因此在绝大多数情况可将在线车3所占用的巨大空间与轧机本体相重叠并节约了大量的空间开销，而且主油缸或轧线调整装置通过在线车3的中空部分调整伸出量以进行铝带板厚的控制或对辊径进行补偿，此时下支承辊由于主油缸或轧线调整装置的支撑作用而与在线车3的支撑平面处于脱离状态，换辊支架6长期处于机组生产线外并不与本系统的其他部分发生关联，旧上支承辊88在轧机本体镶块装置的作用下由高位下降至低位。The initial state is the non-roll changing state, which is the normal state of the replacement system. At this time, the safety operation platform 1 completely covers the ground potholes to ensure the safety of other related operations. As shown in Figure 3, the safety operation platform 1 and theroll changing vehicle 10 are in a state of In the disengaged state, theroll changing car 10 is at the rear limit position, the off-line car 2 is outside the rolling mill body, and the wheels of the off-line car 2 are located on theroll changing track 5, the on-line car 3 is inside the rolling mill body, and the wheels of the on-line car 3 are located in the rolling mill body. On the rolling mill rail 7 (the internal rail of the rolling mill body), in most cases, the huge space occupied by the in-line car 3 can be overlapped with the rolling mill main body and a lot of space costs can be saved, and the main oil cylinder or rolling line adjustment device Adjust the protruding amount through the hollow part of the in-line car 3 to control the thickness of the aluminum strip or to compensate the roll diameter. At this time, the lower backup roll is at the support plane of the in-line car 3 due to the support of the main oil cylinder or the rolling line adjustment device. In the disengaged state, theroll changing bracket 6 is outside the production line of the unit for a long time and is not related to other parts of the system, and the old upper backup roll 88 is lowered from a high position to a low position under the action of the rolling mill body insert device.

当初始状态向换辊状态转变时，轧机本体已停机，而且工作辊及中间辊已被拖移至机组生产线外，此时，主油缸或轧线调整装置由在线车3的中空部分缩回至最低位置以为本系统的移动让出空间，旧下支承辊随之下降至在线车3的支撑平面。When the initial state changes to the roll changing state, the rolling mill body has stopped, and the work rolls and intermediate rolls have been dragged out of the production line of the unit. The lowest position is to make room for the movement of the system, and the old lower back-up roller is lowered to the support plane of the in-line car 3.

首先，换辊车10由后极限位置移动至前极限位置并与安全操作平台1相连接，参照图4，然后安全操作平台1、离线车2、在线车3相连接的整体被拖动至后极限位置，此时旧下支承辊9由于在线车3的支撑平面亦被拖动至后极限位置，在线车3的车轮由轧机轨道7移动至换辊轨道5上，然后换辊支架6被吊装至旧下支承辊9上方，然后旧上支承辊8在轧机本体的镶块装置作用下由低位上升至高位以利于换辊支架6与旧下支承辊9相连接的整体被换辊车10拖动至前极限位置，继而旧上支承辊8由于轧机本体的镶块装置作用而由高位下降至低位并与换辊支架6的支撑平面相接触。First, theroller changing cart 10 moves from the rear limit position to the front limit position and is connected with the safety operation platform 1, referring to FIG. The limit position, at this time the old lowerbackup roll 9 is also dragged to the rear limit position due to the support plane of thewire car 3, the wheel of thewire car 3 is moved from the rollingmill track 7 to theroll changing track 5, and then theroll changing bracket 6 is hoisted. to the top of the old lowerbackup roll 9, and then the old upperbackup roll 8 rises from a low position to a high position under the action of the insert device of the rolling mill body, so that the whole connected with the old lowerbackup roll 9 and theroll changing bracket 6 is dragged by theroll changing car 10. Move to the front limit position, and then the old upperbackup roll 8 is lowered from a high position to a low position due to the action of the insert device of the rolling mill body and contacts the supporting plane of theroll changing bracket 6 .

然后，旧的上下支承辊及换辊支架6被换辊车10、安全操作平台1、离线车2、在线车3和连接架4所连接成的整体沿换辊轨道5拖动至后极限位置，此时旧上支承辊8和旧下支承辊9完全被拖动至轧机本体的外部并具备吊装条件。Then, the old upper and lower backup rollers and theroller changing bracket 6 are dragged along theroller changing track 5 to the rear limit position by theroller changing car 10, the safety operation platform 1, the off-line car 2, the on-line car 3 and the connecting frame 4. , at this time, the old upperbackup roll 8 and the old lowerbackup roll 9 are completely dragged to the outside of the rolling mill body and have the conditions for hoisting.

当旧上支承辊8、换辊支架6和旧下支承辊9被依次吊离后，新下支承辊、换辊支架6和新上支承辊依次吊装至相应位置，新旧支承辊和换辊支架6的位置一一对应。然后新上支承辊、换辊支架6和新下支承辊被换辊车10、安全操作平台1、离线车2、在线车3和连接架4所连接成的整体拖动至前极限位置，继而轧机本体的相应镶块装置使新上支承辊由低位上升至高位并与换辊支架6的圆柱销C相脱离。When the old upper back-uproller 8, the roller-changingbracket 6 and the old lower back-uproller 9 are hoisted away in turn, the new lower back-up roller, the roller-changingbracket 6 and the new upper back-up roller are hoisted to the corresponding positions in turn, and the new and old back-up rollers and the roller-changing bracket The positions of 6 correspond one-to-one. Then the new upper backing roller, theroller changing bracket 6 and the new lower backing roller are dragged to the front limit position by the whole connected by theroller changing car 10, the safety operation platform 1, the off-line car 2, the on-line car 3 and the connecting frame 4, and then The corresponding insert device of the rolling mill body makes the new upper backup roll rise from the low position to the high position and disengage from the cylindrical pin C of theroll changing bracket 6 .

最后，换辊支架6和新下支承辊被换辊车10、安全操作平台1、离线车2、在线车3和连接架4所构成的整体拖动至后极限位置以利于换辊支架6的吊离。Finally, the roll-changingbracket 6 and the new lower backup roll are dragged to the rear limit position by the whole composed of the roll-changingcar 10 , the safety operation platform 1 , the off-line car 2 , the on-line car 3 and the connecting frame 4 to facilitate the operation of the roll-changingbracket 6 Hang away.

待换辊支架6吊离本系统后，新下支承辊被换辊车10、安全操作平台1、离线车2、在线车3和连接架4所构成的整体拖动至前极限位置，然后主油缸或轧线调整装置由在线车3的中空部分伸出并与新下支承辊相接触，新上支承辊在轧机本体镶块装置的作用下由高位下降至低位。After theroller changing bracket 6 is lifted from the system, the new lower backup roller is dragged to the front limit position by the whole composed of theroller changing car 10, the safety operation platform 1, the off-line car 2, the on-line car 3 and the connecting frame 4, and then the main The oil cylinder or the rolling line adjusting device protrudes from the hollow part of the on-line car 3 and contacts with the new lower backup roll, and the new upper backup roll is lowered from a high position to a low position under the action of the rolling mill body insert device.

继而换辊车10与安全操作平台1相拖开并移动至后极限位置。Then, theroll changing cart 10 is dragged away from the safety operation platform 1 and moved to the rear limit position.

此时支承辊更换系统、上下支承辊、主油缸或轧线调整装置和轧机本体的镶块装置等均再次回到初始状态并为下一次的换支承辊做好准备。At this time, the backup roll replacement system, the upper and lower backup rolls, the main oil cylinder or the rolling line adjustment device and the insert device of the rolling mill body all return to the initial state again and are ready for the next backup roll replacement.

在本实施方式中，未配置独立的驱动装置，而是通过换辊车10（换辊车为工作辊换辊车或中间辊换辊车）的拖动来实现移动的，避免了工作辊换辊车或中间辊换辊车及相应液压元器件的长期闲置并有效实现了节约能源；同时，在线车所占用的巨大空间与轧机本体的空间相重叠，因而本实施方式的结构极为紧凑并节省了大量的空间开销。In this embodiment, no independent drive device is configured, but the movement is realized by dragging the roll changing car 10 (the roll changing car is a work roll changing car or an intermediate roll changing car), which avoids work roll changing. The long-term idleness of the roll car or the intermediate roll changing car and the corresponding hydraulic components effectively saves energy; at the same time, the huge space occupied by the in-line car overlaps with the space of the rolling mill body, so the structure of this embodiment is extremely compact and saves energy. A lot of space overhead.

第二实施方式：Second embodiment:

在第一实施方式的基础上，在线车3是指位于轧机生产线内的小车，它为中空框架结构，且在线车3有两辆，两辆线车3之间通过连接架4连接为可同速在换辊轨道5或轧机轨道7上移动的一体结构。On the basis of the first embodiment, the in-line car 3 refers to a trolley located in the rolling mill production line, which is a hollow frame structure, and there are two in-line cars 3, and the two in-line cars 3 are connected by a connecting frame 4 to be compatible with each other. It is an integrated structure that moves on theroll changing track 5 or the rollingmill track 7 at high speed.

为了避免下支承辊与更换系统发生相对移动或倾覆，确保下支承辊和更换系统的同步稳定的移动，如图2所示，每辆在线车3的车架上对称布置两个圆锥销B，两个圆锥销B关于换辊轨道5的长度方向中心线或轧机轨道7的长度方向中心线对称分布，且两个圆锥销B的连线垂直于换辊轨道5或轧机轨道7，圆锥销B的直径为75mm～80mm，长度为350mm～360mm。In order to avoid the relative movement or overturning of the lower backup roller and the replacement system, and to ensure the synchronous and stable movement of the lower backup roller and the replacement system, as shown in Figure 2, two tapered pins B are symmetrically arranged on the frame of eachwire car 3, The two tapered pins B are symmetrically distributed with respect to the longitudinal centerline of theroll changing track 5 or the longitudinal centerline of the rollingmill track 7, and the connecting line of the two tapered pins B is perpendicular to theroll changing track 5 or the rollingmill track 7. The tapered pins B The diameter is 75mm~80mm, and the length is 350mm~360mm.

在线车3通过圆锥销B与旧下支承辊9的轴承座或新下支承辊的的轴承座插接，旧下支承辊9的轴承座和新下支承辊的的轴承座分别开设有用于插入圆锥销B的孔，孔与圆锥销B的径向间隙为1mm～1.5mm，通过此间隙可方便的将下支承辊安全准确的吊装于更换系统的相应位置，而且该间隙可补偿下支承辊在轧制过程中的振动与调偏。Thewire car 3 is inserted into the bearing seat of the old lowerbackup roller 9 or the bearing seat of the new lower backup roller through the tapered pin B, and the bearing seat of the old lowerbackup roller 9 and the bearing seat of the new lower backup roller are respectively provided for insertion. The hole of the taper pin B, the radial gap between the hole and the taper pin B is 1mm~1.5mm, through this gap, the lower backup roller can be easily and accurately hoisted in the corresponding position of the replacement system, and the gap can compensate the lower backup roller. Vibration and deflection during rolling.

第三实施方式：Third Embodiment:

在第一实施方式的基础上，离线车2是指位于轧机生产线外的小车，如图2所示，它的一端垂直向上延伸并与安全操作平台1的端部铰接，另外一段与在线车3通过紧固件可拆卸地连接。On the basis of the first embodiment, the off-line car 2 refers to a trolley located outside the rolling mill production line. As shown in FIG. 2 , one end of it extends vertically upward and is hinged with the end of the safety operation platform 1 , and the other part is connected to the on-line car 3 . Removably connected by fasteners.

换辊支架6包括矩形的立板，立板的四个角分别固接一块托板，每块托板上设有两个圆柱销C，两个圆柱销C关于立板对称分布，圆柱销C的直径为80mm～85mm，长度为30mm～40mm，通过圆柱销C可以在换辊时将上支承辊和下支承辊轴承连接为一体并使其整体的移动。Theroller changing bracket 6 includes a rectangular vertical plate, the four corners of the vertical plate are respectively fixed to a supporting plate, each supporting plate is provided with two cylindrical pins C, the two cylindrical pins C are symmetrically distributed about the vertical plate, and the cylindrical pins C The diameter of the roller is 80mm~85mm, and the length is 30mm~40mm. Through the cylindrical pin C, the upper backing roller and the lower backing roller bearing can be connected together and moved as a whole when the roller is changed.

换辊支架6通过立板上方的两个圆柱销C与旧上支承辊88的轴承座或新上支承辊的轴承座插接，通过立板下方的两个圆柱销C与旧下支承辊9的轴承座或新下支承辊的轴承座插接，每个轴承座上开设有用于插入圆柱销C的孔，孔与圆柱销C的径向间隙为0.1mm～0.5mm，该间隙既可以保证换辊支架6可方便的吊装于下支承辊的相应位置又可以保证上支承辊可方便的吊装于换辊支架6的相应位置，而且此小间隙可使上下支承辊和换辊支架6在整体移动时不会发生重心移动或倾翻的危险状况。Theroller changing bracket 6 is inserted into the bearing seat of the old upper backup roller 88 or the bearing seat of the new upper backup roller through the two cylindrical pins C above the vertical plate, and is connected to the old lowerbackup roller 9 through the two cylindrical pins C below the vertical plate. The new bearing seat or the bearing seat of the new lower support roller is inserted, each bearing seat is provided with a hole for inserting the cylindrical pin C, and the radial clearance between the hole and the cylindrical pin C is 0.1mm ~ 0.5mm, which can ensure that both Theroller changing bracket 6 can be easily hoisted at the corresponding position of the lower backup roller, and it can also ensure that the upper backup roller can be easily hoisted at the corresponding position of theroller changing bracket 6, and this small gap can make the upper and lower backup rollers and theroller changing bracket 6 in the whole. There is no danger of shifting the center of gravity or tipping over when moving.

安全操作平台1的端部开设有用于与换辊车10连接的连接孔A，连接孔A位于离线车2的正上方，通过连接孔A，安全操作平台1可与换辊车10相连接或者断开连接。The end of the safety operation platform 1 is provided with a connecting hole A for connecting with theroll changing car 10, the connecting hole A is located directly above the off-line car 2, through the connecting hole A, the safety operating platform 1 can be connected with theroll changing car 10 or Disconnect.

换辊轨道5固定于土建基础，其靠近轧机的一端与轧机本体相连接，这样可使换辊轨道5在承受离线车2、在线车3、连接架4、换辊支架6和上下支承辊的巨大重力时不发生严重的变形和位移，提高了本系统在工作时的位置精度，而且换辊轨道5的标高和截面与轧机轨道7的标高和截面一致，这样可使在线车3方便的进出轧机。Theroll changing rail 5 is fixed on the civil foundation, and its end close to the rolling mill is connected to the rolling mill body, so that the rollingrail 5 can withstand the off-line car 2, the on-line car 3, the connecting frame 4, theroll changing bracket 6 and the upper and lower backup rolls. Severe deformation and displacement do not occur under huge gravity, which improves the positional accuracy of the system during operation, and the elevation and section of theroll changing track 5 are consistent with those of the rollingmill track 7, so that theonline car 3 can be easily entered and exited. mill.

第四实施方式：Fourth Embodiment:

在以上所有实施方式的基础上，具体地，本实施方式的初始状态即为非换辊态，初始状态为常态，此时本系统全部处于前极限位置，即安全操作平台1全部掩盖地面坑洞以保证其他相关操作的安全，安全操作平台1的连接孔A与换辊车10处于脱开状态，换辊车10处于后极限位置，离线车2处于轧机本体的外部，而且离线车2的车轮位于换辊轨道5上，两个在线车3及其连接架4全部处于轧机本体的内部，在线车3的车轮位于轧机轨道7上，因此本发明在在绝大多数情况可将在线车3和连接架4所占用的巨大空间与轧机本体相重叠并节约了大量的空间开销，而且主油缸或轧线调整装置通过在线车3的中空部分调整伸出量以进行铝带板厚的控制或对辊径进行补偿，此时下支承辊由于主油缸或轧线调整装置的支撑作用而与在线车3的支撑平面处于脱离状态，但在线车3顶部的圆锥销B长期处于下支承辊轴承座的相应孔内。On the basis of all the above embodiments, specifically, the initial state of this embodiment is the non-roll changing state, and the initial state is the normal state. At this time, the system is all in the front limit position, that is, the safety operation platform 1 completely covers the ground potholes In order to ensure the safety of other related operations, the connection hole A of the safety operation platform 1 is disconnected from theroll changing car 10, theroll changing car 10 is at the rear limit position, the off-line car 2 is outside the rolling mill body, and the wheels of the off-line car 2 are in a disengaged state. Located on theroll changing track 5, the two in-line cars 3 and their connecting frames 4 are all located inside the rolling mill body, and the wheels of the in-line car 3 are located on the rollingmill track 7. Therefore, in most cases, the present invention can combine the in-line cars 3 and 4. The huge space occupied by the connecting frame 4 overlaps with the rolling mill body and saves a lot of space overhead, and the main oil cylinder or the rolling line adjusting device adjusts the protruding amount through the hollow part of the on-line car 3 to control the thickness of the aluminum strip or adjust it. The roll diameter is compensated. At this time, the lower backup roll is in a disengaged state from the support plane of thewire car 3 due to the support of the main oil cylinder or the rolling line adjustment device. inside the hole.

初始状态换辊支架6长期处于机组生产线外并不与本系统的其他部分发生关联，上支承辊在轧机本体镶块装置的作用下由高位下降至低位。In the initial state, theroll changing bracket 6 is outside the production line of the unit for a long time and is not related to other parts of the system. The upper backup roll is lowered from a high position to a low position under the action of the rolling mill body insert device.

换辊态为旧支承辊被拖出轧机后新支承辊被推入轧机并再次具备生产条件时的状态，初始状态与换辊态的相互转换过程如下：The roll change state is the state when the old backup roll is pulled out of the rolling mill and the new backup roll is pushed into the rolling mill and has the production conditions again. The mutual conversion process between the initial state and the roll change state is as follows:

当初始状态向换辊态转变时，轧机本体已停机，而且工作辊及中间辊已被拖移至机组生产线外，此时，主油缸或轧线调整装置由在线车3的中空部分缩回至最低位置以为本系统的移动让出空间，旧下支承辊9随之下降至在线车3的支撑平面。When the initial state changes to the roll change state, the rolling mill body has stopped, and the work rolls and intermediate rolls have been dragged out of the production line of the unit. At this time, the main oil cylinder or rolling line adjustment device is retracted from the hollow part of theonline car 3 The lowest position is to make room for the movement of the system, and the old lower back-uproller 9 is then lowered to the support plane of the in-line car 3 .

首先换辊车10由后极限位置移动至前极限位置并通过安全操作平台1的连接孔A与其相连接，然后安全操作平台1、离线车2、在线车3和连接架4相连接的整体被拖动至后极限位置，此时旧下支承辊9由于在线车3的支撑平面和圆锥销B的联合作用亦被拖动至后极限位置，在线车3的车轮由轧机轨道7移动至换辊轨道5上，然后换辊支架6被吊装至旧下支承辊9上方并且换辊支架6的圆柱销C插入旧下支承辊9轴承座的相应孔内，然后旧上支承辊8在轧机本体的镶块装置作用下由低位上升至高位以利于换辊支架6与旧下支承辊9相连接的整体被换辊车10拖动至前极限位置，继而旧上支承辊8由于轧机本体的镶块装置作用而由高位下降至低位并与换辊支架6的支撑平面相接触，而且换辊支架6的圆柱销C插入旧上支承辊8轴承座的相应孔内。First, theroller changing cart 10 is moved from the rear limit position to the front limit position and connected to it through the connection hole A of the safety operation platform 1, and then the whole connected with the safety operation platform 1, the off-line cart 2, the on-line cart 3 and the connecting frame 4 is Drag to the rear limit position. At this time, the old lowerbackup roll 9 is also dragged to the rear limit position due to the combined action of the support plane of thewire car 3 and the conical pin B. The wheels of thewire car 3 are moved from the rollingmill track 7 to the roll change. On thetrack 5, then theroll change bracket 6 is hoisted above the old lowerbackup roll 9 and the cylindrical pin C of theroll change bracket 6 is inserted into the corresponding hole of the bearing seat of the old lowerbackup roll 9, and then the old upperbackup roll 8 is placed on the rolling mill body. Under the action of the insert device, it is raised from the low position to the high position, so that the whole connected with theroll changing bracket 6 and the old lowerbackup roll 9 is dragged to the front limit position by theroll changing car 10, and then the old upperbackup roll 8 is due to the inserts of the rolling mill body. The device acts to descend from a high position to a low position and contact the support plane of theroller changing bracket 6 , and the cylindrical pin C of theroller changing bracket 6 is inserted into the corresponding hole of the bearing seat of the old upperbackup roller 8 .

由于换辊支架6的圆柱销C与相应孔之间为0.1～0.5mm的小间隙，此时旧的上下支承辊与换辊支架6相连接为整体而且是极为稳定且不易倾翻的，然后旧的上下支承辊及换辊支架6被换辊车10、安全操作平台1、离线车2、在线车3和连接架4所连接成的整体沿换辊轨道5拖动至后极限位置，此时旧上支承辊8和旧下支承辊9完全被拖动至轧机本体的外部并具备吊装条件。Since there is a small gap of 0.1-0.5mm between the cylindrical pin C of theroller changing bracket 6 and the corresponding hole, the old upper and lower backup rollers are connected to theroller changing bracket 6 as a whole and are extremely stable and not easy to tip over. The old upper and lower backup rollers and theroller changing bracket 6 are connected by theroller changing car 10, the safety operation platform 1, the off-line car 2, the on-line car 3 and the connecting frame 4 to be dragged to the rear limit position along theroller changing track 5. The old upper back-uproll 8 and the old lower back-uproll 9 are completely dragged to the outside of the rolling mill body and are ready for hoisting.

当旧上支承辊8、换辊支架6和旧下支承辊9被依次吊离后，新下支承辊、换辊支架6和新上支承辊依次吊装至相应位置，新旧支撑辊和换辊支架6的位置一一对应。When the old upper back-uproller 8, the roller-changingbracket 6 and the old lower back-uproller 9 are hoisted away in turn, the new lower back-up roller, the roller-changingbracket 6 and the new upper back-up roller are hoisted to the corresponding positions in turn, and the old and new back-up rollers and the roller-changing bracket are hoisted to the corresponding positions. The positions of 6 correspond one-to-one.

新上支承辊、换辊支架6和新下支承辊被换辊车10、安全操作平台1、离线车2、在线车3和连接架4所连接成的整体拖动至前极限位置，继而轧机本体的相应镶块装置使新上支承辊由低位上升至高位并与换辊支架6的圆柱销C相脱离。The new upper back-up roll, the roll-changingbracket 6 and the new lower back-up roll are connected by theroll changing car 10, the safety operation platform 1, the off-line car 2, the on-line car 3 and the connecting frame 4. The whole is dragged to the front limit position, and then the rolling mill The corresponding insert device of the main body makes the new upper backup roller rise from the low position to the high position and disengage from the cylindrical pin C of theroller changing bracket 6 .

换辊支架6和新下支承辊被换辊车10、安全操作平台1、离线车2、在线车3和连接架4所构成的整体拖动至后极限位置以利于换辊支架6的吊离。待换辊支架6吊离本系统后，新下支承辊被换辊车10、安全操作平台1、离线车2、在线车3和连接架4所构成的整体拖动至前极限位置。The roll-changingbracket 6 and the new lower backup roll are dragged to the rear limit position by the whole composed of the roll-changingcar 10, the safety operation platform 1, the off-line car 2, the on-line car 3 and the connecting frame 4, so as to facilitate the lifting of the roll-changingbracket 6. . After theroller changing bracket 6 is lifted from the system, the new lower backup roller is dragged to the front limit position by the whole composed of theroller changing car 10, the safety operation platform 1, the off-line car 2, the on-line car 3 and the connecting frame 4.

主油缸或轧线调整装置由在线车3的中空部分伸出并与新下支承辊相接触，新上支承辊在轧机本体镶块装置的作用下由高位下降至低位。The main oil cylinder or the rolling line adjusting device protrudes from the hollow part of the on-line car 3 and contacts with the new lower backup roll, and the new upper backup roll is lowered from a high position to a low position under the action of the rolling mill body insert device.

继而换工作辊及中间辊与安全操作平台1连接孔相拖开并移动至后极限位置，此时本系统、上下支承辊、主油缸或轧线调整装置和轧机本体的镶块装置等均再次回到初始状态并为下一次的换支承辊做好准备。Then, the work rolls and intermediate rolls are moved away from the connection hole of the safety operation platform 1 and moved to the rear limit position. At this time, the system, the upper and lower backup rolls, the main oil cylinder or the rolling line adjustment device and the insert device of the rolling mill body are all again. Return to the original state and prepare for the next backup roll change.

由初始状态与换辊态的相互转换过程可知换辊支架6的主要作用是将上支承辊和下支撑辊连接为一体以利于上支承辊拖出被拖出轧机或拖入轧机，而该过程需要借助轧机本体的镶块作用以使得换辊支架6的圆柱销C由上支承辊的相应孔插入或者拔出。From the mutual conversion process between the initial state and the roll-changing state, it can be seen that the main function of the roll-changingbracket 6 is to connect the upper backup roll and the lower backup roll into one, so as to facilitate the upper backup roll to be pulled out of the rolling mill or pulled into the rolling mill, and this process It is necessary to use the insert action of the rolling mill body so that the cylindrical pins C of theroll changing bracket 6 can be inserted or pulled out from the corresponding holes of the upper backup roll.

本领域的普通技术人员可以理解，上述各实施方式是实现本发明的具体实施例，而在实际应用中，可以在形式上和细节上对其作各种改变，而不偏离本发明的精神和范围。Those skilled in the art can understand that the above-mentioned embodiments are specific examples for realizing the present invention, and in practical applications, various changes in form and details can be made without departing from the spirit and the spirit of the present invention. scope.

Claims (9)

1. A method for replacing a backup roll of a rolling mill is characterized by comprising the following steps:

step one, initial state

The rolling mill track (7) is provided with a wire trolley (3), the wire trolley (3) is positioned right below the old lower supporting roller (9), and a main hydraulic cylinder or a rolling wire adjusting device of the rolling mill can pass through the wire trolley (3) and extend to contact the old lower supporting roller (9) or retract to be separated from the old lower supporting roller (9);

a roll changing track (5) connected with a rolling mill track (7) is laid in a pit outside a rolling mill, an off-line vehicle (2) is laid on the roll changing track (5), the top of the off-line vehicle (2) is hinged to the end of a safe operation platform (1), the safe operation platform (1) covers the pit and is suspended at the bottom of a roll changing vehicle (10) in a sliding manner, and the roll changing vehicle (10) is a working roll changing vehicle or a middle roll changing vehicle;

in an initial state, the safe operation platform (1), the off-line vehicle (2) and the on-line vehicle (3) are all located at respective front limit positions, and the roll changing vehicle (10) is located at the rear limit position;

step two, roll changing state

Step 001, shutting down the rolling mill, dragging the working roll and the intermediate roll to the outside of the production line of the rolling mill;

step 002, driving the main hydraulic cylinder or the rolling line adjusting device to retract from the online trolley (3) until the main hydraulic cylinder or the rolling line adjusting device is separated from the old lower supporting roller (9), the old lower supporting roller (9) descends and is fixed on the online trolley (3), and the online trolley (3) is connected with the offline trolley (2);

step 003, the roll changing trolley (10) moves towards the direction close to the rolling mill until the roll changing trolley reaches the front limit position of the roll changing trolley, the safe operation platform (1) and the roll changing trolley (10) are detachably connected, the roll changing trolley (10) drives the safe operation platform (1) to move towards the direction away from the rolling mill until the whole formed by connecting the safe operation platform (1), the off-line trolley (2) and the on-line trolley (3) reaches the rear limit position, and the on-line trolley (3) is changed from the rolling mill track (7) to the roll changing track (5);

step 004, hoisting the roll changing support (6) and fixing the roll changing support on the old lower supporting roll (9);

005, the roll changing trolley (10) drives the safe operation platform (1) to move towards the direction close to the rolling mill until the whole formed by connecting the safe operation platform (1), the off-line trolley (2) and the on-line trolley (3) reaches the front limit position, and the old upper supporting roll (8) descends and is fixed on the roll changing support (6);

step 006, the roll changing vehicle (10) drives the safe operation platform (1) to move in the direction away from the rolling mill until the whole formed by connecting the safe operation platform (1), the off-line vehicle (2) and the on-line vehicle (3) reaches the rear limit position;

step 007, hanging away the roller changing bracket (6), the old upper supporting roller (8) and the old lower supporting roller (9);

step 008, hoisting a new lower supporting roll and fixing the new lower supporting roll on the online trolley (3), hoisting a roll changing bracket (6) and fixing the new upper supporting roll on the roll changing bracket (6);

step 009, the roll changing trolley (10) drives the safe operation platform (1) to move towards the direction close to the rolling mill until the whole formed by connecting the safe operation platform (1), the off-line trolley (2) and the on-line trolley (3) reaches the front limit position;

step 010, lifting the new upper supporting roll to separate from the roll changing bracket (6), and installing the new upper supporting roll on the rolling mill;

step 011, the roll changing vehicle (10) drives the safe operation platform (1) to move towards the direction away from the rolling mill until the whole formed by connecting the safe operation platform (1), the off-line vehicle (2) and the on-line vehicle (3) reaches the rear limit position;

step 012, hanging off the roll changing bracket (6);

step 013, the roll changing vehicle (10) drives the safe operation platform (1) to move towards the direction close to the rolling mill until the whole formed by connecting the safe operation platform (1), the off-line vehicle (2) and the on-line vehicle (3) reaches the front limit position, so that the on-line vehicle (3) is positioned right below the new upper supporting roll;

step 014, passing the main hydraulic cylinder or the rolling line adjusting device of the rolling mill through the online trolley (3) and extending to contact the new lower supporting roll, and installing the new lower supporting roll on the rolling mill;

step 015, returning to the initial state after the supporting roll of the rolling mill is replaced;

the front limit position in the step one and the front limit position in the step two are limit positions which can be reached by moving along the roll changing track (5) or the rolling mill track (7) towards the direction close to the rolling mill; the rear limit position in the step one and the rear limit position in the step two are both limit positions which can be reached by moving along the roll changing track (5) or the rolling mill track (7) in the direction away from the rolling mill.

2. A method of replacing a backup roll for a rolling mill according to claim 1, wherein: the online trolley (3) is a trolley positioned in a rolling mill production line, is of a hollow frame structure, and has two online trolleys (3), wherein the two online trolleys (3) are connected into an integrated structure capable of moving on a roll changing track (5) or a rolling mill track (7) at the same speed through a connecting frame (4).

3. A method of replacing a backup roll for a rolling mill according to claim 2, wherein: two taper pins B are symmetrically arranged on a frame of each online vehicle (3), the two taper pins B are symmetrically distributed about the center line of the length direction of the roll changing track (5) or the center line of the length direction of the rolling mill track (7), the connecting line of the two taper pins B is perpendicular to the roll changing track (5) or the rolling mill track (7), the diameter of each taper pin B is 75-80 mm, and the length of each taper pin B is 350-360 mm.

4. A method of replacing a backup roll for a rolling mill according to claim 3, wherein: the online trolley (3) is spliced with a bearing seat of an old lower supporting roller (9) or a bearing seat of a new lower supporting roller through a taper pin B, the bearing seats of the old lower supporting roller (9) and the new lower supporting roller are respectively provided with a hole for inserting the taper pin B, and the radial clearance between the hole and the taper pin B is 1-1.5 mm.

5. A method of replacing a backup roll for a rolling mill according to claim 1, wherein: the off-line trolley (2) is a trolley positioned outside a rolling mill production line, one end of the off-line trolley extends vertically upwards and is hinged with the end part of the safe operation platform (1), and the other section of the off-line trolley is detachably connected with the on-line trolley (3) through a fastener.

6. A method of replacing a backup roll for a rolling mill according to claim 1, wherein: the roll changing support (6) comprises a rectangular vertical plate, four corners of the vertical plate are fixedly connected with a supporting plate respectively, two cylindrical pins C are arranged on each supporting plate and are symmetrically distributed relative to the vertical plate, the diameter of each cylindrical pin C ranges from 80mm to 85mm, and the length of each cylindrical pin C ranges from 30mm to 40 mm.

7. A method of replacing a backup roll for a rolling mill according to claim 6, wherein: the roller changing support (6) is connected with a bearing seat of an old upper supporting roller (8) or a bearing seat of a new upper supporting roller in an inserting mode through two cylindrical pins C above a vertical plate, connected with a bearing seat of an old lower supporting roller (9) or a bearing seat of a new lower supporting roller in an inserting mode through two cylindrical pins C below the vertical plate, a hole used for inserting the cylindrical pin C is formed in each bearing seat, and the radial clearance between the hole and the cylindrical pin C is 0.1-0.5 mm.

8. A method of replacing a backup roll for a rolling mill according to claim 1 or 5, wherein: the end part of the safe operation platform (1) is provided with a connecting hole A which is used for being connected with the roll changing trolley (10), and the connecting hole A is positioned right above the off-line trolley (2).

9. A method of replacing a backup roll for a rolling mill according to claim 1, wherein: the roll changing track (5) is fixed on a civil engineering foundation, and the elevation and the section of the roll changing track (5) are consistent with those of the rolling mill track (7).

Images