CN218535128U

Movatterモバイル変換

Info

Publication number: CN218535128U
Application number: CN202222615470.1U
Authority: CN
Inventors: 胡祥正
Original assignee: Jiangsu Newvis Bioengineering Technology Research Institute Co ltd
Current assignee: Tibet Newis Biotechnology Co ltd
Priority date: 2022-10-02
Filing date: 2022-10-02
Publication date: 2023-02-28
Anticipated expiration: 2032-10-02

Abstract

Translated fromChinese

本实用新型公开了一种用于石棉水泥制品的加工设备，包括机架、混料箱和出料阀，所述机架内部的一端固定有隔板，所述隔板顶端的一侧安装有直驱电机，且所述直驱电机的输出端安装有主轴，所述机架顶端的一侧固定有轴承座，且所述轴承座的内部转动安装有副轴，副轴的一端延伸至混料箱的内部并安装有摆臂往复单元，所述摆臂往复单元的底端安装有提料板，所述副轴的另一端安装有和主轴相互连接的第一皮带传动结构，所述混料箱顶端的一侧固定有动力传动箱。本实用新型在混料箱水平面、Z轴上形成多道搅拌区域，降低设备中的物料混合盲区，提高设备对石棉水泥的混合质量以及混合效率，其结构简单、工作可靠稳定。

The utility model discloses a processing equipment for asbestos cement products, which comprises a frame, a mixing box and a discharge valve. One end inside the frame is fixed with a baffle, and one side of the top of the baffle is installed with a Direct drive motor, and the output end of the direct drive motor is equipped with a main shaft, one side of the top of the frame is fixed with a bearing seat, and the inner rotation of the bearing seat is installed with a secondary shaft, and one end of the secondary shaft extends to the mixer The inside of the material box is equipped with a swing arm reciprocating unit, the bottom end of the swing arm reciprocating unit is equipped with a lifting plate, and the other end of the auxiliary shaft is equipped with a first belt transmission structure connected to the main shaft. One side of the top of the material box is fixed with a power transmission box. The utility model forms multi-channel mixing areas on the horizontal plane of the mixing box and on the Z axis, reduces the material mixing blind area in the equipment, improves the mixing quality and mixing efficiency of the equipment for asbestos cement, and has simple structure and reliable and stable operation.

Description

Translated fromChinese

一种用于石棉水泥制品的加工设备A kind of processing equipment for asbestos cement products

技术领域technical field

本实用新型涉及石棉水泥加工技术领域，具体为一种用于石棉水泥制品的加工设备。The utility model relates to the technical field of asbestos cement processing, in particular to a processing equipment for asbestos cement products.

背景技术Background technique

石棉水泥板是以优质高标号水泥为基体材料，并配以天然石棉纤维增强，经先进生产工艺成型、加压、高温蒸养和特殊技术处理而制成的高科技产品，具有质轻、高强、防火、防水等优点，石棉水泥板在混料阶段，需要对高标号水泥以及辅助配料进行混合搅拌，但是现有搅拌设备中的搅拌盲区较多，接近底部的物料难以被搅拌到，这就需要设备增加搅拌时间用来混合水泥物料，进而降低了石棉水泥板的加工效率。Asbestos cement board is a high-tech product made of high-quality high-grade cement as the base material and reinforced with natural asbestos fibers. It is formed by advanced production technology, pressurized, high-temperature steamed and treated with special technology. , fire prevention, waterproof and other advantages, asbestos cement board needs to mix high-grade cement and auxiliary ingredients in the mixing stage, but there are many blind spots in the mixing equipment in the existing mixing equipment, and the materials close to the bottom are difficult to be mixed, which is Equipment is required to increase the mixing time to mix the cement material, thereby reducing the processing efficiency of the asbestos cement board.

实用新型内容Utility model content

本实用新型的目的在于提供一种用于石棉水泥制品的加工设备，以解决上述背景技术中提出石棉水泥板物料在搅拌设备中混合时，混料效率以及混料质量差的问题。The purpose of this utility model is to provide a processing equipment for asbestos cement products to solve the problems of poor mixing efficiency and mixing quality when asbestos cement board materials are mixed in the mixing equipment mentioned in the background art.

为实现上述目的，本实用新型提供如下技术方案：一种用于石棉水泥制品的加工设备，包括机架、混料箱和出料阀，所述机架内部的一端固定有隔板，所述隔板顶端的一侧安装有直驱电机，且所述直驱电机的输出端安装有主轴，所述机架顶端的一侧固定有轴承座，且所述轴承座的内部转动安装有副轴，副轴的一端延伸至混料箱的内部并安装有摆臂往复单元，所述摆臂往复单元的底端安装有提料板，所述副轴的另一端安装有和主轴相互连接的第一皮带传动结构，所述混料箱顶端的一侧固定有动力传动箱，所述动力传动箱的内部双向传动结构，所述混料箱顶部的两侧皆安装有搅拌轴，两组搅拌轴的顶端和双向传动结构相互连接，搅拌轴的外周面固定有四组回形架，所述副轴表面的一侧安装有向双向传动结构传递动力的第二皮带传动结构。In order to achieve the above purpose, the utility model provides the following technical solutions: a processing equipment for asbestos cement products, including a frame, a mixing box and a discharge valve, one end inside the frame is fixed with a partition, the A direct drive motor is installed on one side of the top of the partition, and a main shaft is installed on the output end of the direct drive motor, a bearing seat is fixed on one side of the top of the frame, and a countershaft is installed on the inner rotation of the bearing seat , one end of the auxiliary shaft extends to the inside of the mixing box and a swing arm reciprocating unit is installed. The bottom end of the swing arm reciprocating unit is equipped with a lifting plate, and the other end of the auxiliary shaft is installed with a first A belt transmission structure, one side of the top of the mixing box is fixed with a power transmission box, the internal two-way transmission structure of the power transmission box, both sides of the top of the mixing box are equipped with stirring shafts, two sets of stirring shafts The top of the top and the two-way transmission structure are connected to each other, four groups of return frames are fixed on the outer peripheral surface of the stirring shaft, and a second belt transmission structure for transmitting power to the two-way transmission structure is installed on one side of the surface of the auxiliary shaft.

优选的，所述摆臂往复单元包括固定在副轴一端的主连杆，且所述主连杆表面的一端铰接有副连杆，所述副连杆的底端铰接有导柱，导柱的外壁与混料箱的内部滑动连接，所述导柱的底端与提料板的顶端固定连接。Preferably, the swing arm reciprocating unit includes a main connecting rod fixed at one end of the auxiliary shaft, and one end of the surface of the main connecting rod is hinged with a secondary connecting rod, and the bottom end of the secondary connecting rod is hinged with a guide post, and the guide post The outer wall of the guide column is slidably connected with the inside of the mixing box, and the bottom end of the guide post is fixedly connected with the top end of the lifting plate.

优选的，所述第一皮带传动结构包括固定在主轴顶端的第一主动轮和固定在副轴另一端的第一从动轮，第一主动轮和第一从动轮之间缠绕有第一履带。Preferably, the first belt transmission structure includes a first driving wheel fixed on the top end of the main shaft and a first driven wheel fixed on the other end of the auxiliary shaft, and a first track is wound between the first driving wheel and the first driven wheel.

优选的，所述双向传动结构包括转动安装在动力传动箱内部两侧的长轴，其中一组所述长轴的顶端通过第二皮带传动结构和副轴相互连接，两组所述长轴的顶端皆安装有蜗杆，蜗杆远离长轴的一端与动力传动箱的内壁转动连接，两组所述长轴的表面皆安装有齿轮盘，两组齿轮盘相互啮合。Preferably, the two-way transmission structure includes long shafts rotatably installed on both sides inside the power transmission box, wherein the top ends of one group of long shafts are connected to each other through the second belt transmission structure and the auxiliary shaft, and the two groups of long shafts Worms are mounted on the top ends, and the ends of the worms away from the long axis are rotatably connected to the inner wall of the power transmission box. Gear plates are installed on the surfaces of the two sets of long shafts, and the two sets of gear plates mesh with each other.

优选的，所述双向传动结构还包括固定在搅拌轴顶端的蜗轮盘，所述蜗轮盘和蜗杆相互啮合。Preferably, the two-way transmission structure further includes a worm wheel fixed on the top of the stirring shaft, and the worm wheel and the worm mesh with each other.

优选的，所述第二皮带传动结构包括固定在长轴顶端的第二从动轮和固定在副轴表面一侧的第二主动轮，第二从动轮和第二主动轮之间安装有第二履带。Preferably, the second belt transmission structure includes a second driven wheel fixed on the top of the major shaft and a second driving wheel fixed on one side of the countershaft surface, and a second driven wheel is installed between the second driven wheel and the second driving wheel. track.

与现有技术相比，本实用新型的有益效果是：该一种用于石棉水泥制品的加工设备通过设置有第一皮带传动结构和搅拌轴等相互配合的结构，工作人员将待混合的石棉水泥物料投入至混料箱中，直驱电机驱动主轴、第一皮带传动结构以及摆臂往复单元工作，使得提料板不断的将混料箱底部的物料向上翻动，并由第二皮带传动结构、双向传动结构使得搅拌轴、回形架转动，进而在混料箱水平面、Z轴上形成多道搅拌区域，从而降低设备中的物料混合盲区，提高设备对石棉水泥的混合质量以及混合效率。Compared with the prior art, the beneficial effect of the utility model is: the processing equipment for asbestos cement products is provided with a first belt transmission structure and a structure that cooperates with the stirring shaft, etc., and the staff will mix the asbestos to be mixed. The cement material is put into the mixing box, and the direct drive motor drives the main shaft, the first belt transmission structure and the swing arm reciprocating unit to work, so that the lifting plate continuously turns the material at the bottom of the mixing box upwards, and the second belt transmission structure The two-way transmission structure makes the mixing shaft and the return frame rotate, and then forms multiple mixing areas on the horizontal plane of the mixing box and on the Z axis, thereby reducing the blind area of material mixing in the equipment, and improving the mixing quality and mixing efficiency of the equipment for asbestos cement.

附图说明Description of drawings

图1为本实用新型的主视剖面结构示意图；Fig. 1 is the front view sectional structure schematic diagram of the utility model;

图2为本实用新型的侧视结构示意图；Fig. 2 is the side view structural representation of the utility model;

图3为本实用新型的主视结构示意图；Fig. 3 is the front view structure schematic diagram of the utility model;

图4为本实用新型的动力传动箱俯视结构示意图；Fig. 4 is a schematic structural diagram of a top view of the power transmission box of the present invention;

图中：1、机架；2、隔板；3、混料箱；4、出料阀；5、直驱电机；6、主轴；7、第一皮带传动结构；8、轴承座；9、副轴；10、第二皮带传动结构；11、主连杆；12、副连杆；13、导柱；14、提料板；15、动力传动箱；16、搅拌轴；17、回形架；18、蜗轮盘；19、长轴；20、齿轮盘；21、蜗杆。In the figure: 1. Rack; 2. Partition; 3. Mixing box; 4. Discharge valve; 5. Direct drive motor; 6. Main shaft; 7. First belt transmission structure; 8. Bearing seat; 9. Secondary shaft; 10. Second belt transmission structure; 11. Main connecting rod; 12. Secondary connecting rod; 13. Guide column; 14. Lifting plate; 15. Power transmission box; 16. Stirring shaft; 17. Return frame ; 18, worm gear disc; 19, major axis; 20, gear disc; 21, worm.

具体实施方式Detailed ways

下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

请参阅图1-4，本实用新型提供的一种实施例：一种用于石棉水泥制品的加工设备，包括机架1、混料箱3和出料阀4，机架1内部的一端固定有隔板2，隔板2顶端的一侧安装有直驱电机5，且直驱电机5的输出端安装有主轴6，机架1顶端的一侧固定有轴承座8，且轴承座8的内部转动安装有副轴9，副轴9的一端延伸至混料箱3的内部并安装有摆臂往复单元，摆臂往复单元的底端安装有提料板14，摆臂往复单元包括固定在副轴9一端的主连杆11，且主连杆11表面的一端铰接有副连杆12，副连杆12的底端铰接有导柱13，导柱13的外壁与混料箱3的内部滑动连接，导柱13的底端与提料板14的顶端固定连接，直驱电机5驱动主轴6转动，则主轴6通过第一皮带传动结构7驱动副轴9、主连杆11进行转动；Please refer to Fig. 1-4, a kind of embodiment that the utility model provides: a kind of processing equipment that is used for asbestos cement product, comprises frame 1, mixing box 3 and discharge valve 4, and one end inside frame 1 is fixed There is a partition 2, a direct drive motor 5 is installed on one side of the top of the partition 2, and a main shaft 6 is installed on the output end of the direct drive motor 5, and a bearing seat 8 is fixed on one side of the top of the frame 1, and the bearing seat 8 Internal rotation is provided with auxiliary shaft 9, and one end of auxiliary shaft 9 extends to the inside of mixing box 3 and is equipped with swing arm reciprocating unit, and the bottom end of swing arm reciprocating unit is equipped withlifting plate 14, and swing arm reciprocating unit includes The main connecting rod 11 at one end of the auxiliary shaft 9, and one end of the surface of the main connecting rod 11 is hinged with asecondary connecting rod 12, and the bottom end of the secondary connectingrod 12 is hinged with aguide post 13, and the outer wall of theguide post 13 is connected to the inside of the mixing box 3 Slidingly connected, the bottom of theguide post 13 is fixedly connected with the top of thematerial lifting plate 14, the direct drive motor 5 drives the main shaft 6 to rotate, then the main shaft 6 drives the auxiliary shaft 9 and the main connecting rod 11 to rotate through the first belt transmission structure 7;

副轴9的另一端安装有和主轴6相互连接的第一皮带传动结构7，第一皮带传动结构7包括固定在主轴6顶端的第一主动轮和固定在副轴9另一端的第一从动轮，第一主动轮和第一从动轮之间缠绕有第一履带；The other end of the auxiliary shaft 9 is equipped with a first belt transmission structure 7 interconnected with the main shaft 6. The first belt transmission structure 7 includes a first driving wheel fixed on the top of the main shaft 6 and a first slave fixed on the other end of the auxiliary shaft 9. The driving wheel, the first track is wound between the first driving wheel and the first driven wheel;

主连杆11的回转运动通过副连杆12转化为导柱13、提料板14的上下往复运动，则提料板14不断的将混料箱3底部的物料向上翻动；The rotary motion of the main connecting rod 11 is converted into the up and down reciprocating motion of theguide column 13 and thematerial lifting plate 14 through thesecondary connecting rod 12, and thematerial lifting plate 14 continuously turns the materials at the bottom of the mixing box 3 upward;

混料箱3顶端的一侧固定有动力传动箱15，动力传动箱15的内部双向传动结构，混料箱3顶部的两侧皆安装有搅拌轴16，两组搅拌轴16的顶端和双向传动结构相互连接，搅拌轴16的外周面固定有四组回形架17，因副轴9通过第二皮带传动结构10和动力传动箱15中的双向传动结构相互连接，则两组搅拌轴16同步转动，进而搅拌轴16带动回形架17转动，利用回形架17不断的混合石棉水泥物料；One side of the top of the mixing box 3 is fixed with apower transmission box 15, the internal two-way transmission structure of thepower transmission box 15, both sides of the top of the mixing box 3 are equipped withstirring shafts 16, the tops of the two groups of stirringshafts 16 and the two-way transmission The structures are connected to each other. Four groups ofreturn frames 17 are fixed on the outer peripheral surface of the stirringshaft 16. Because the secondary shaft 9 is connected to each other through the two-way transmission structure in the secondbelt transmission structure 10 and thepower transmission box 15, the two groups of stirringshafts 16 are synchronized. Rotate, and then thestirring shaft 16 drives thereturn frame 17 to rotate, and utilizes thereturn frame 17 to continuously mix the asbestos cement material;

在混料箱3水平面、Z轴上形成多道搅拌区域，从而降低设备中的物料混合盲区，提高设备对石棉水泥的混合质量以及混合效率；Multi-channel mixing areas are formed on the horizontal plane of the mixing box 3 and on the Z axis, thereby reducing the blind area of material mixing in the equipment, and improving the mixing quality and mixing efficiency of the equipment for asbestos cement;

双向传动结构包括转动安装在动力传动箱15内部两侧的长轴19，其中一组长轴19的顶端通过第二皮带传动结构10和副轴9相互连接，副轴9驱动摆臂往复单元工作时，副轴9的部分动力通过第二皮带传动结构10传递至长轴19上；The two-way transmission structure includeslong shafts 19 rotatably installed on both sides inside thepower transmission box 15, wherein the top ends of one group oflong shafts 19 are connected to each other through the secondbelt transmission structure 10 and the counter shaft 9, and the counter shaft 9 drives the swing arm reciprocating unit to work , part of the power of the auxiliary shaft 9 is transmitted to thelong shaft 19 through the secondbelt transmission structure 10;

两组长轴19的顶端皆安装有蜗杆21，蜗杆21远离长轴19的一端与动力传动箱15的内壁转动连接，两组长轴19的表面皆安装有齿轮盘20，两组齿轮盘20相互啮合，双向传动结构还包括固定在搅拌轴16顶端的蜗轮盘18，蜗轮盘18和蜗杆21相互啮合，长轴19驱动蜗杆21、蜗轮盘18转动，最终使得蜗轮盘18带动搅拌轴16、回形架17转动；Worms 21 are mounted on the tops of the two groups oflong shafts 19, and the ends of theworms 21 away from thelong shafts 19 are rotationally connected to the inner wall of thepower transmission box 15.Gear plates 20 are installed on the surfaces of the two groups oflong shafts 19, and the two groups ofgear plates 20 The two-way transmission structure also includes aworm wheel 18 fixed on the top of thestirring shaft 16, theworm 18 and theworm 21 are engaged with each other, and thelong shaft 19 drives theworm 21 and theworm 18 to rotate, and finally theworm 18 drives the stirringshaft 16,Back shape frame 17 rotates;

副轴9表面的一侧安装有向双向传动结构传递动力的第二皮带传动结构10，第二皮带传动结构10包括固定在长轴19顶端的第二从动轮和固定在副轴9表面一侧的第二主动轮，第二从动轮和第二主动轮之间安装有第二履带；One side of the surface of the countershaft 9 is equipped with a secondbelt transmission structure 10 that transmits power to the two-way transmission structure. The second driving wheel, the second track is installed between the second driven wheel and the second driving wheel;

由于齿轮盘20和另一组长轴19上的的齿轮盘20进行啮合，则另一组搅拌轴16、回形架17同步转动，使得混料箱3在Z轴上有两组搅拌区域，使得石棉水泥物料被充分混合，其结构简单、工作稳定，并由单台驱动源进行驱动，使用成本、构造成本低。Because thegear disc 20 and thegear disc 20 on another group oflong shafts 19 are meshed, then another group of stirringshafts 16 and thereturn frame 17 rotate synchronously, so that the mixing box 3 has two groups of stirring areas on the Z axis. The asbestos cement material is fully mixed, the structure is simple, the work is stable, and it is driven by a single driving source, and the use cost and construction cost are low.

本申请实施例在使用时，首先工作人员将待混合的石棉水泥物料投入至混料箱3中，随后开启直驱电机5，使得直驱电机5驱动主轴6转动，则主轴6通过第一皮带传动结构7驱动副轴9、主连杆11进行转动，则主连杆11的回转运动通过副连杆12转化为导柱13、提料板14的上下往复运动，则提料板14不断的将混料箱3底部的物料向上翻动，因副轴9通过第二皮带传动结构10和动力传动箱15中的双向传动结构相互连接，则两组搅拌轴16同步转动，进而搅拌轴16带动回形架17转动，利用回形架17不断的混合石棉水泥物料，该过程中可在混料箱3水平面、Z轴上形成多道搅拌区域，从而降低设备中的物料混合盲区，提高设备对石棉水泥的混合质量以及混合效率，副轴9驱动摆臂往复单元工作时，副轴9的部分动力通过第二皮带传动结构10传递至长轴19上，则长轴19驱动蜗杆21、蜗轮盘18转动，最终使得蜗轮盘18带动搅拌轴16、回形架17转动，其结构简单、工作稳定。When the embodiment of the present application is in use, the staff first puts the asbestos cement material to be mixed into the mixing box 3, and then turns on the direct drive motor 5, so that the direct drive motor 5 drives the main shaft 6 to rotate, and then the main shaft 6 passes through the first belt The transmission structure 7 drives the auxiliary shaft 9 and the main connecting rod 11 to rotate, then the rotary motion of the main connecting rod 11 is converted into the up and down reciprocating motion of theguide column 13 and thelifting plate 14 through the auxiliary connectingrod 12, and thelifting plate 14 is continuously Turn the material at the bottom of the mixing box 3 upwards, because the secondary shaft 9 is connected to each other through the two-way transmission structure in the secondbelt transmission structure 10 and thepower transmission box 15, the two groups of stirringshafts 16 rotate synchronously, and then thestirring shafts 16 drive back Shapedframe 17 rotates, utilizesback shape frame 17 to mix asbestos cement material continuously, in this process can form multi-channel mixing area on the horizontal plane of mixing box 3, Z axis, thereby reduces the material mixing blind area in the equipment, improves the asbestos-cement resistance of equipment. The mixing quality and mixing efficiency of cement, when the auxiliary shaft 9 drives the swing arm reciprocating unit to work, part of the power of the auxiliary shaft 9 is transmitted to thelong shaft 19 through the secondbelt transmission structure 10, and thelong shaft 19 drives theworm 21 and theworm wheel 18 The rotation finally makes theworm wheel disc 18 drive the stirringshaft 16 and thereturn frame 17 to rotate, and the structure is simple and the work is stable.

Claims

1. A processing equipment for asbestos cement products is characterized in that: including frame (1), mixing box (3) and bleeder valve (4), the inside one end of frame (1) is fixed with baffle (2), one side on baffle (2) top is installed and is directly driven motor (5), just main shaft (6) are installed to the output that directly drives motor (5), one side on frame (1) top is fixed with bearing frame (8), just countershaft (9) are installed to the internal rotation of bearing frame (8), and the one end of countershaft (9) extends to the inside of mixing box (3) and installs the reciprocal unit of swing arm, lifting blade (14) are installed to the bottom of the reciprocal unit of swing arm, the first belt drive structure (7) of interconnect with main shaft (6) are installed to the other end of countershaft (9), one side on mixing box (3) top is fixed with power transmission case (15), the inside two-way transmission structure of power transmission case (15), mixing box (3) top both sides all install (mixing shaft (16), the top and the two-way transmission structure interconnect of two sets of (16), the outer peripheral face of four groups (16) is fixed with return frame (17), there is the transmission shaft (10) surface mounting second belt drive structure of countershaft (10).

2. A processing plant for asbestos cement products according to claim 1, characterised in that: the swing arm reciprocating unit comprises a main connecting rod (11) fixed at one end of an auxiliary shaft (9), an auxiliary connecting rod (12) is hinged to one end of the surface of the main connecting rod (11), a guide pillar (13) is hinged to the bottom end of the auxiliary connecting rod (12), the outer wall of the guide pillar (13) is in sliding connection with the interior of the mixing box (3), and the bottom end of the guide pillar (13) is fixedly connected with the top end of a material lifting plate (14).

3. A processing plant for asbestos cement products according to claim 1, characterised in that: the first belt transmission structure (7) comprises a first driving wheel fixed at the top end of the main shaft (6) and a first driven wheel fixed at the other end of the auxiliary shaft (9), and a first crawler belt is wound between the first driving wheel and the first driven wheel.

4. A processing plant for asbestos cement products according to claim 1, characterised in that: two-way transmission structure installs major axis (19) in power transmission case (15) inside both sides including rotating, one of them is a set of the top of major axis (19) is through second belt transmission structure (10) and countershaft (9) interconnect, and is two sets of worm (21) are all installed on the top of major axis (19), and the one end that major axis (19) were kept away from in worm (21) is rotated with the inner wall of power transmission case (15) and is connected, and is two sets of gear disc (20) are all installed on the surface of major axis (19), two sets of gear disc (20) intermeshing.

5. A processing plant for asbestos-cement products, according to claim 4, characterized in that: the bidirectional transmission structure further comprises a worm wheel disc (18) fixed at the top end of the stirring shaft (16), and the worm wheel disc (18) and the worm (21) are meshed with each other.

6. A processing plant for asbestos-cement products, according to claim 4, characterized in that: the second belt transmission structure (10) comprises a second driven wheel fixed at the top end of the long shaft (19) and a second driving wheel fixed on one side of the surface of the auxiliary shaft (9), and a second crawler belt is installed between the second driven wheel and the second driving wheel.