技术领域technical field
本发明涉及通过改变流体粘稠性调整阻尼性质的装置技术领域，尤其涉及一种具有单向阻尼特性的磁流变阻尼器。The invention relates to the technical field of devices for adjusting damping properties by changing fluid viscosity, in particular to a magneto-rheological damper with unidirectional damping characteristics.
背景技术Background technique
磁流变阻尼器是基于磁流变液可控特性的一种新型半主动阻尼器件，具有响应速度快、结构简单、体积小、容易控制等优点，是一种理想的隔振、减振装置，在振动控制领域具有广泛的应用前景。常见的磁流变阻尼器将电磁线圈绕于阻尼器的活塞上，同时活塞上设置环状通道或在活塞与阻尼缸筒之间设置环状通道，工作时磁流变液从环状通道流过产生阻尼力，调节电磁线圈内的电流就可以改变环状通道内的磁场强度达到调节阻尼力的目的。The magnetorheological damper is a new type of semi-active damping device based on the controllable characteristics of the magnetorheological fluid. It has the advantages of fast response, simple structure, small size, and easy control. It is an ideal vibration isolation and vibration reduction device. , has broad application prospects in the field of vibration control. The common magnetorheological damper winds the electromagnetic coil on the piston of the damper, and at the same time, an annular channel is set on the piston or between the piston and the damping cylinder, and the magnetorheological fluid flows from the annular channel during operation. By generating a damping force, adjusting the current in the electromagnetic coil can change the magnetic field strength in the annular channel to achieve the purpose of adjusting the damping force.
工程中的振动控制装置有时会用到具有单向阻尼特性的阻尼器，既能对稳态的振动起隔振、减振作用，又不会对瞬态冲击作用下的隔振、减振效果产生恶化作用，如很多汽车悬架用减振器就为具有单向阻尼特性的阻尼器。对于磁流变阻尼器，其单向阻尼特性可以在活塞沿某一方向运动时切断电流来实现，但为了满足一定的阻尼力要求，常见磁流变阻尼器环状通道的间隙比较小，因此即使电流不存在磁场强度为零时，活塞运动时仍会产生一定的阻尼力。Vibration control devices in engineering sometimes use dampers with one-way damping characteristics, which can not only isolate and reduce vibrations for steady-state vibrations, but also have no effect on vibration isolation and vibration reduction under transient impacts. For example, many automobile suspension shock absorbers are dampers with one-way damping characteristics. For the magnetorheological damper, its one-way damping characteristic can be realized by cutting off the current when the piston moves in a certain direction, but in order to meet a certain damping force requirement, the gap of the annular channel of the common magnetorheological damper is relatively small, so Even if there is no current and the magnetic field strength is zero, a certain damping force will still be generated when the piston moves.
发明内容Contents of the invention
本发明所要解决的技术问题是提供一种具有单向阻尼特性的磁流变阻尼器，具有在某一运动方向阻尼力很小，另一运动方向阻尼力可调的特点，所述阻尼器具有很好的隔振、减振效果，并且具有适用范围广的优点。The technical problem to be solved by the present invention is to provide a magneto-rheological damper with unidirectional damping characteristics, which has the characteristics of small damping force in one direction of motion and adjustable damping force in the other direction of motion. The damper has It has good vibration isolation and vibration reduction effects, and has the advantage of wide application range.
为解决上述技术问题，本发明所采取的技术方案是：一种具有单向阻尼特性的磁流变阻尼器，包括阻尼缸筒，所述阻尼缸筒的下端设有浮动活塞，浮动活塞的上端面与阻尼缸筒之间为磁流变液腔，其内设有磁流变液，所述阻尼缸筒的上端设有一端延伸至阻尼缸筒内，另一端位于阻尼缸筒外的活塞杆，其特征在于：所述活塞杆位于阻尼缸筒内的端部固定有单向阻尼活塞组件和线圈组件，所述单向阻尼活塞组件包括阻尼活塞、弹簧片和垫片，所述垫片、弹簧片和阻尼活塞依次从上到下固定在所述活塞杆的端部，所述线圈组件固定在所述阻尼活塞下侧的活塞杆上，围绕所述阻尼活塞的轴心分别间隔的设有若干个第一环状通孔和若干个第二环状通孔，所述第二环状通孔位于所述第一环状通孔的外侧且所述第二环状通孔的孔径大于第一环状通孔的孔径，在所述弹簧片上与所述第一环状通孔对应的位置，设有分别与第一环状通孔相连通的弹簧片环状通孔，且弹簧片将第二环状通孔覆盖；在所述线圈组件上与所述第一环状通孔对应的位置，设有分别与第一环状通孔相连通的磁流变液通道，且所述线圈组件不将所述第二环状通孔覆盖。In order to solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a magneto-rheological damper with unidirectional damping characteristics, including a damping cylinder, the lower end of the damping cylinder is provided with a floating piston, and the upper end of the floating piston is Between the end face and the damping cylinder is a magneto-rheological fluid cavity, in which a magneto-rheological fluid is provided. The upper end of the damping cylinder is provided with a piston rod with one end extending into the damping cylinder and the other end located outside the damping cylinder. , characterized in that: the end of the piston rod located in the damping cylinder is fixed with a one-way damping piston assembly and a coil assembly, the one-way damping piston assembly includes a damping piston, a spring plate and a gasket, the gasket, The spring leaf and the damping piston are sequentially fixed on the end of the piston rod from top to bottom, and the coil assembly is fixed on the piston rod on the lower side of the damping piston. A plurality of first annular through holes and a plurality of second annular through holes, the second annular through holes are located outside the first annular through holes and the diameter of the second annular through holes is larger than that of the first annular through holes The aperture of an annular through hole, on the position corresponding to the first annular through hole on the described spring sheet, is provided with the spring sheet annular through hole that communicates with the first annular through hole respectively, and the spring sheet will The second annular through hole covers; at the position corresponding to the first annular through hole on the coil assembly, there are magnetorheological fluid channels respectively connected with the first annular through hole, and the coil The component does not cover the second annular through hole.
进一步的技术方案在于：所述阻尼缸筒包括缸盖、缸筒、浮动活塞和缸底，所述缸盖固定焊接在所述缸筒的顶部，所述浮动活塞位于所述线圈组件下部的缸筒内，并与缸筒动密封连接，所述缸底固定焊接在所述缸筒的底部；所述浮动活塞、缸盖和缸筒之间形成磁流变液腔，所述缸底、浮动活塞和缸筒之间形成蓄能腔，蓄能腔内充有氮气，用于补偿活塞杆伸缩时磁流变液腔的体积变化。A further technical solution is: the damping cylinder includes a cylinder head, a cylinder, a floating piston and a cylinder bottom, the cylinder head is fixedly welded on the top of the cylinder, and the floating piston is located in the cylinder below the coil assembly. The cylinder is in dynamic sealing connection with the cylinder, and the cylinder bottom is fixedly welded on the bottom of the cylinder; a magnetorheological fluid cavity is formed between the floating piston, cylinder head and cylinder, and the cylinder bottom, floating An energy storage chamber is formed between the piston and the cylinder, and the energy storage chamber is filled with nitrogen to compensate the volume change of the magneto-rheological fluid chamber when the piston rod stretches and contracts.
进一步的技术方案在于：所述活塞杆的下端设有定位轴肩和外螺纹，所述活塞杆的下端依次穿过垫片的中心孔、弹簧片的中心孔和阻尼活塞的中心孔通过外螺纹与线圈组件上的铁芯螺纹连接，所述垫片卡接在所述定位轴肩上。A further technical solution is: the lower end of the piston rod is provided with a positioning shoulder and an external thread, and the lower end of the piston rod passes through the central hole of the gasket, the central hole of the spring leaf and the central hole of the damping piston in turn through the external thread It is threadedly connected with the iron core on the coil assembly, and the gasket is clamped on the positioning shoulder.
进一步的技术方案在于：所述线圈组件包括压盖、铁芯、导磁铁环、电磁线圈、线圈护套和导磁套，所述铁芯的外周绕有电磁线圈，电磁线圈的外部套设有线圈护套，导磁铁环与铁芯的下端定位配合，压盖固定在所述铁芯的下端，压盖上设有压盖环状通孔，所述压盖环状通孔的孔径及位置与所述第一环状通孔相同，导磁套保持间隙的套设于所述铁芯的外侧，且其上端面与阻尼活塞配合，下端面与压盖配合，弹簧片环状通孔、第一环状通孔、导磁套与铁芯间的间隙以及压盖环状通孔依次连通形成磁流变液通道。A further technical solution is: the coil assembly includes a gland, an iron core, a magnet ring, an electromagnetic coil, a coil sheath and a magnet sleeve, an electromagnetic coil is wound around the outer periphery of the iron core, and an outer sheath of the electromagnetic coil is provided with The coil sheath, the magnetic guide ring and the lower end of the iron core are positioned and matched, and the gland is fixed on the lower end of the iron core. The gland is provided with a gland ring-shaped through hole. The aperture and position of the gland ring-shaped through hole The same as the first annular through hole, the magnetic sleeve is sleeved on the outside of the iron core to keep the gap, and its upper end surface cooperates with the damping piston, and its lower end surface cooperates with the gland. The spring leaf annular through hole, The first annular through hole, the gap between the magnetic sleeve and the iron core, and the annular through hole of the gland are sequentially connected to form a magneto-rheological fluid channel.
进一步的技术方案在于：所述铁芯的上部设有铁芯轴肩，轴心设有中心孔，中心孔内设有内螺纹，中部设有与中心孔相连通的电磁线圈引出孔，下部设有轴环，线圈护套通过铁芯轴肩、轴环与铁芯定位配合，电磁线圈的引线经铁芯上的电磁线圈引出孔及活塞杆的中心孔引出。The further technical solution is: the upper part of the iron core is provided with an iron core shaft shoulder, the shaft center is provided with a central hole, the central hole is provided with an internal thread, the middle part is provided with an electromagnetic coil lead-out hole connected with the central hole, and the lower part is provided with a There is a collar, the coil sheath is positioned and matched with the iron core through the core shaft shoulder, the collar and the iron core, and the lead wire of the electromagnetic coil is drawn out through the electromagnetic coil lead-out hole on the iron core and the central hole of the piston rod.
进一步的技术方案在于：所述压盖包括位于上侧的凸起部和固定在凸起部下侧的基座部，所述凸起部的外周设有压盖螺纹，所述基座部上设有压盖轴肩，所述压盖环状通孔设置在所述基座部上。A further technical solution is that: the gland includes a raised portion on the upper side and a base portion fixed on the lower side of the raised portion, the outer periphery of the raised portion is provided with gland threads, and the base portion is provided with There is a gland shoulder, and the annular through hole of the gland is arranged on the base part.
进一步的技术方案在于：所述压盖通过压盖螺纹与铁芯中心孔内的内螺纹连接，所述压盖螺纹的上端面、活塞杆的下端面及铁芯的内螺纹面之间填充密封胶。A further technical solution is: the gland is connected to the inner thread in the center hole of the iron core through the gland thread, and the upper end surface of the gland thread, the lower end surface of the piston rod and the inner thread surface of the iron core are filled and sealed. glue.
进一步的技术方案在于：所述铁芯、导磁铁环、导磁套的制作材料为高磁导率软磁材料，阻尼活塞、压盖、线圈护套采用不导磁材料制作。A further technical solution is that: the iron core, magnet ring, and magnet sleeve are made of soft magnetic materials with high permeability, and the damping piston, gland, and coil sheath are made of non-magnetic materials.
进一步的技术方案在于：所述导磁套的上端和下端分别设有导磁套孔肩，所述导磁套通过导磁套孔肩分别与阻尼活塞以及压盖配合。A further technical solution is that: the upper end and the lower end of the magnetic sleeve are respectively provided with a magnetic sleeve hole shoulder, and the magnetic sleeve cooperates with the damping piston and the gland respectively through the magnetic sleeve shoulder.
进一步的技术方案在于：所述浮动活塞与阻尼缸筒之间设有浮动活塞密封圈；所述阻尼活塞与阻尼缸筒之间设有阻尼活塞密封圈；所述活塞杆与阻尼缸筒之间设有缸盖密封圈。A further technical solution is: a floating piston sealing ring is provided between the floating piston and the damping cylinder; a damping piston sealing ring is provided between the damping piston and the damping cylinder; Equipped with cylinder head sealing ring.
采用上述技术方案所产生的有益效果在于：所述弹簧片与阻尼缸筒之间构成磁流变液的上腔体，所述阻尼活塞、线圈组件与阻尼缸筒之间构成磁流变液的下腔体。当阻尼活塞向上运动时，由于上腔磁流变液的压力作用，弹簧片将第二环状通孔密封，故磁流变液只能从第一环状通孔流入并经过线圈组件上的磁流变液通道流至下腔体，电磁线圈通电时产生磁流变效应，从而产生一定的阻尼力，通过调节磁场强度，可以实现阻尼力的调节；当阻尼活塞向下运动时，下腔体的压力顶开弹簧片，第二环状通孔处于打开状态，由于第二环状通孔间隙较大，故大部分的磁流变液经过第二环状通孔流至上腔体，同时由于阻尼活塞为不导磁材料，第二环状通孔内不会产生磁流变效应，因而产生的阻尼力很小，从而实现磁流变阻尼器的单向阻尼特性。The beneficial effect produced by adopting the above technical solution is that: the upper cavity of the magnetorheological fluid is formed between the spring piece and the damping cylinder, and the magnetorheological fluid is formed between the damping piston, the coil assembly and the damping cylinder. lower cavity. When the damping piston moves upwards, due to the pressure of the magnetorheological fluid in the upper cavity, the spring piece seals the second annular through hole, so the magnetorheological fluid can only flow in from the first annular through hole and pass through the coil assembly. The magneto-rheological fluid channel flows to the lower chamber, and the magneto-rheological effect is generated when the electromagnetic coil is energized, thereby generating a certain damping force. By adjusting the magnetic field strength, the adjustment of the damping force can be realized; when the damping piston moves downward, the lower chamber The pressure of the body pushes away the spring piece, and the second annular through hole is in an open state. Since the second annular through hole has a large gap, most of the magnetorheological fluid flows to the upper cavity through the second annular through hole, and at the same time Since the damping piston is made of non-magnetic material, no magneto-rheological effect will be generated in the second annular through hole, so the damping force generated is very small, thereby realizing the one-way damping characteristic of the magneto-rheological damper.
所述阻尼器能够充分发挥减振装置受到某一方向的突然冲击时弹簧的缓冲作用，同时由于单向阻尼特性可调，因此所述阻尼器具有很好的隔振、减振效果，并且具有适用范围广的优点。The damper can give full play to the buffering effect of the spring when the damping device is subjected to a sudden impact in a certain direction, and at the same time, due to the adjustable one-way damping characteristic, the damper has good vibration isolation and damping effects, and has The advantages of a wide range of applications.
附图说明Description of drawings
图1是本发明的剖视结构示意图；Fig. 1 is the sectional structure schematic diagram of the present invention;
图2是本发明中阻尼活塞的剖视结构示意图；Fig. 2 is the sectional structure schematic diagram of damping piston in the present invention;
图3是本发明中阻尼活塞的俯视图；Fig. 3 is the top view of damping piston among the present invention;
图4是本发明中弹簧片的剖视结构示意图Fig. 4 is the sectional structure schematic diagram of spring leaf among the present invention
图5是本发明中弹簧片的俯视图；Fig. 5 is the top view of leaf spring among the present invention;
图6是本发明中导磁套的剖视结构示意图；Fig. 6 is a schematic cross-sectional structure diagram of a magnetic sleeve in the present invention;
图7是本发明中铁芯的剖视结构示意图；Fig. 7 is the sectional structure schematic diagram of iron core in the present invention;
图8是本发明中压盖的剖视结构示意图；Fig. 8 is a schematic cross-sectional structural view of the gland in the present invention;
图9是本发明中活塞杆的主视图；Fig. 9 is the front view of piston rod among the present invention;
图10是本发明中磁路形成原理图；Fig. 10 is a schematic diagram of the formation of the magnetic circuit in the present invention;
其中：1、缸盖 2、缸盖密封圈 3、缸筒 4、活塞杆 401、外螺纹 402、定位轴肩 5、浮动活塞 6、浮动活塞密封圈 7、缸底 8、压盖 801、压盖螺纹 802、压盖环状通孔 803、压盖轴肩 9、铁芯 901、铁芯轴肩 902、轴环 903、电磁线圈引出孔 904、内螺纹 10、导磁铁环11、电磁线圈 12、线圈护套 13、导磁套 131、导磁套孔肩 14、阻尼活塞密封圈 15、阻尼活塞 151、第一环状通孔 152、第二环状通孔 153、活塞轴肩 16、弹簧片 161、弹簧片环状通孔 17、垫片 18、密封胶。Among them: 1, cylinder head 2, cylinder head seal ring 3, cylinder barrel 4, piston rod 401, external thread 402, positioning shoulder 5, floating piston 6, floating piston seal ring 7, cylinder bottom 8, gland 801, pressure Cover thread 802, gland annular through hole 803, gland shoulder 9, iron core 901, iron core shoulder 902, collar 903, electromagnetic coil lead-out hole 904, internal thread 10, magnet ring 11, electromagnetic coil 12 , coil sheath 13, magnetic sleeve 131, magnetic sleeve hole shoulder 14, damping piston seal ring 15, damping piston 151, first annular through hole 152, second annular through hole 153, piston shaft shoulder 16, spring Sheet 161, spring sheet annular through hole 17, gasket 18, sealant.
具体实施方式detailed description
下面结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是本发明还可以采用其他不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本发明内涵的情况下做类似推广，因此本发明不受下面公开的具体实施例的限制。In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.
如图1所示，本发明公开了一种具有单向阻尼特性的磁流变阻尼器，包括阻尼缸筒，所述阻尼缸筒的下端设有浮动活塞5，浮动活塞5的上端面与阻尼缸筒之间为磁流变液腔，其内设有磁流变液，所述阻尼缸筒的上端设有一端延伸至阻尼缸筒内，另一端位于阻尼缸筒外的活塞杆4。As shown in Figure 1, the present invention discloses a magneto-rheological damper with one-way damping characteristics, including a damping cylinder, the lower end of the damping cylinder is provided with a floating piston 5, and the upper end surface of the floating piston 5 is in contact with the damping cylinder. Between the cylinders is a magneto-rheological fluid cavity, which is provided with magnetorheological fluid. The upper end of the damping cylinder is provided with a piston rod 4 with one end extending into the damping cylinder and the other end located outside the damping cylinder.
进一步的，所述阻尼缸筒包括缸盖1、缸筒3、浮动活塞5和缸底7。所述缸盖1固定焊接在所述缸筒3的顶部，所述活塞杆4穿过所述缸盖1进入到缸筒3内，活塞杆4与缸盖1之间设有缸盖密封圈2。所述浮动活塞5位于所述线圈组件下部的缸筒3内，所述浮动活塞5与阻尼缸筒之间设有浮动活塞密封圈6，与缸筒形成动密封连接。所述缸底7固定焊接在所述缸筒3的底部；所述浮动活塞5、缸盖1和缸筒3之间形成磁流变液腔，所述缸底7、浮动活塞5和缸筒3之间形成蓄能腔，蓄能腔内充有氮气，用于补偿活塞杆伸缩时磁流变液腔的体积变化。Further, the damping cylinder includes a cylinder head 1 , a cylinder 3 , a floating piston 5 and a cylinder bottom 7 . The cylinder head 1 is fixedly welded on the top of the cylinder barrel 3, the piston rod 4 enters the cylinder barrel 3 through the cylinder head 1, and a cylinder head sealing ring is arranged between the piston rod 4 and the cylinder head 1 2. The floating piston 5 is located in the cylinder 3 at the lower part of the coil assembly, and a floating piston sealing ring 6 is provided between the floating piston 5 and the damping cylinder to form a dynamic sealing connection with the cylinder. The cylinder bottom 7 is fixedly welded on the bottom of the cylinder 3; a magnetorheological fluid cavity is formed between the floating piston 5, the cylinder head 1 and the cylinder 3, and the cylinder bottom 7, the floating piston 5 and the cylinder An energy storage chamber is formed between the 3, and the energy storage chamber is filled with nitrogen gas, which is used to compensate the volume change of the magnetorheological fluid chamber when the piston rod stretches and contracts.
如图1-图5所示，所述活塞杆4位于阻尼缸筒内的端部固定有单向阻尼活塞组件和线圈组件。所述单向阻尼活塞组件包括阻尼活塞15、弹簧片16和垫片17。所述垫片17、弹簧片16和阻尼活塞15依次从上到下固定在所述活塞杆4的端部，所述阻尼活塞15与阻尼缸筒之间设有阻尼活塞密封圈14。所述垫片17用于增大所述弹簧片与所述活塞杆的接触面积，防止由于接触面积过小而引起弹簧片损坏；所述线圈组件固定在所述阻尼活塞15下侧的活塞杆4上，围绕所述阻尼活塞15的轴心分别间隔的设有若干个第一环状通孔151和若干个第二环状通孔152，在本实施例中，所述第一环状通孔151和第二环状通孔152分别设有四个，当然还可以为其它个数。As shown in FIGS. 1-5 , the end of the piston rod 4 located in the damping cylinder is fixed with a one-way damping piston assembly and a coil assembly. The one-way damping piston assembly includes a damping piston 15 , a spring plate 16 and a washer 17 . The gasket 17 , the spring leaf 16 and the damping piston 15 are sequentially fixed on the end of the piston rod 4 from top to bottom, and a damping piston sealing ring 14 is provided between the damping piston 15 and the damping cylinder. The washer 17 is used to increase the contact area between the spring leaf and the piston rod to prevent the spring leaf from being damaged due to too small contact area; the coil assembly is fixed on the piston rod on the lower side of the damping piston 15 4, a plurality of first annular through holes 151 and a plurality of second annular through holes 152 are provided at intervals around the axis of the damping piston 15. In this embodiment, the first annular through holes There are four holes 151 and the second annular through hole 152 respectively, and of course other numbers can also be used.
所述第二环状通孔152位于所述第一环状通孔151的外侧且所述第二环状通孔152的孔径大于第一环状通孔151的孔径，如图3所示。如图5所示，在所述弹簧片16上与所述第一环状通孔151对应的位置，设有分别与第一环状通孔151相连通的弹簧片环状通孔161，且弹簧片16将第二环状通孔152覆盖；如图1所示，在所述线圈组件上与所述第一环状通孔151对应的位置，设有分别与第一环状通孔151相连通的磁流变液通道，且所述线圈组件不将所述第二环状通孔152覆盖。The second annular through hole 152 is located outside the first annular through hole 151 and the diameter of the second annular through hole 152 is larger than that of the first annular through hole 151 , as shown in FIG. 3 . As shown in FIG. 5 , at the position corresponding to the first annular through hole 151 on the spring piece 16 , there are spring piece annular through holes 161 respectively communicating with the first annular through hole 151 , and The spring sheet 16 covers the second annular through hole 152; as shown in FIG. The magneto-rheological fluid channel is connected, and the coil assembly does not cover the second annular through hole 152 .
如图1所示，所述线圈组件包括压盖8、铁芯9、导磁铁环10、电磁线圈11、线圈护套12和导磁套13。所述铁芯9的外周绕有电磁线圈11，电磁线圈11的外部套设有线圈护套12，导磁铁环10与铁芯9的下端定位配合；压盖8固定在所述铁芯9的下端，压盖8上设有压盖环状通孔802，所述压盖环状通孔802的孔径及位置与所述第一环状通孔151相同；导磁套13保持间隙的套设于所述铁芯9的外侧，且其上端面与阻尼活塞15配合，下端面与压盖8配合；弹簧片环状通孔161、第一环状通孔151、导磁套13与铁芯9间的间隙以及压盖环状通孔802依次连通形成磁流变液通道。As shown in FIG. 1 , the coil assembly includes a gland 8 , an iron core 9 , a magnet ring 10 , an electromagnetic coil 11 , a coil sheath 12 and a magnet sleeve 13 . The outer circumference of the iron core 9 is wound with an electromagnetic coil 11, and the outside of the electromagnetic coil 11 is provided with a coil sheath 12, and the magnet ring 10 is positioned and matched with the lower end of the iron core 9; the gland 8 is fixed on the bottom of the iron core 9 At the lower end, the gland 8 is provided with a gland annular through hole 802, the aperture and position of the gland annular through hole 802 are the same as the first annular through hole 151; On the outside of the iron core 9, and its upper end surface is matched with the damping piston 15, and its lower end surface is matched with the gland 8; the annular through hole 161 of the spring sheet, the first annular through hole 151, the magnetic sleeve 13 and the iron core The gap between 9 and the annular through hole 802 of the gland are sequentially connected to form a magneto-rheological fluid channel.
具体的，本发明中的部件具体结构如下：Concrete, the specific structure of parts among the present invention is as follows:
如图9所示，所述活塞杆4的下端设有定位轴肩402和外螺纹401。如图1所示，所述活塞杆4的下端依次穿过垫片17的中心孔、弹簧片16的中心孔和阻尼活塞15的中心孔通过外螺纹401与线圈组件上的铁芯9螺纹连接，所述垫片17卡接在所述定位轴肩402上。As shown in FIG. 9 , the lower end of the piston rod 4 is provided with a positioning shoulder 402 and an external thread 401 . As shown in Figure 1, the lower end of the piston rod 4 passes through the central hole of the washer 17, the central hole of the spring leaf 16 and the central hole of the damping piston 15 in sequence, and is threadedly connected with the iron core 9 on the coil assembly through the external thread 401 , the washer 17 is clamped on the positioning shoulder 402 .
如图6所示，所述导磁套13的上端和下端分别设有导磁套孔肩131，所述导磁套13通过导磁套孔肩131分别与阻尼活塞15以及压盖8配合。As shown in FIG. 6 , the upper and lower ends of the magnetic sleeve 13 are respectively provided with magnetic sleeve hole shoulders 131 , and the magnetic sleeve 13 cooperates with the damping piston 15 and the gland 8 respectively through the magnetic sleeve shoulders 131 .
如图7所示，所述铁芯9的上部设有铁芯轴肩901，轴心设有中心孔，中心孔内设有内螺纹904，中部设有与中心孔相连通的电磁线圈引出孔903，下部设有轴环902，线圈护套12通过铁芯轴肩901、轴环902与铁芯9定位配合，电磁线圈的引线经铁芯9上的电磁线圈引出孔903及活塞杆4的中心孔引出。As shown in Figure 7, the upper part of the iron core 9 is provided with an iron core shaft shoulder 901, the center of the shaft is provided with a central hole, the central hole is provided with an internal thread 904, and the middle part is provided with an electromagnetic coil lead-out hole connected with the central hole 903, the lower part is provided with a collar 902, the coil sheath 12 is positioned and matched with the iron core 9 through the iron core shoulder 901, the collar 902, and the lead wire of the electromagnetic coil passes through the electromagnetic coil lead-out hole 903 on the iron core 9 and the hole of the piston rod 4 The center hole leads out.
如图8所示，所述压盖8包括位于上侧的凸起部和固定在凸起部下侧的基座部，所述凸起部的外周设有压盖螺纹801，所述基座部上设有压盖轴肩803，所述压盖环状通孔802设置在所述基座部上。所述压盖8通过压盖螺纹801与铁芯9中心孔内的内螺纹904连接，所述压盖螺纹801的上端面、活塞杆4的下端面及铁芯9的内螺纹面之间填充密封胶18。As shown in Figure 8, the gland 8 includes a raised portion on the upper side and a base portion fixed on the lower side of the raised portion, the outer circumference of the raised portion is provided with gland threads 801, and the base portion A gland shoulder 803 is provided on it, and the annular through hole 802 of the gland is arranged on the base portion. The gland 8 is connected to the internal thread 904 in the central hole of the iron core 9 through the gland thread 801, and the upper end surface of the gland thread 801, the lower end surface of the piston rod 4 and the internal thread surface of the iron core 9 are filled with Sealant18.
本发明中，所述铁芯9、导磁铁环10、导磁套13的制作材料为高磁导率软磁材料，阻尼活塞15、压盖8、线圈护套12采用不导磁材料制作。如图10所示，电磁线圈11通电时，将形成图示的磁力线回路（箭头所示形成的回路），从而在导磁套13与铁芯9及导磁铁环10之间的环状间隙内形成垂直于磁流变液流动方向的磁场，当阻尼活塞15向上运动时，由于上腔磁流变液的压力作用，弹簧片16将第二环状通孔152密封，故磁流变液只能从第一环状通孔151流入并经过线圈组件上的磁流变液通道流至下腔体，从而产生一定的阻尼力，通过调节磁场强度，可以实现阻尼力的调节；当阻尼活塞15向下运动时，下腔体的压力顶开弹簧片16，第二环状通孔152处于打开状态，由于第二环状通孔152间隙较大，故大部分的磁流变液经过第二环状通孔152流至上腔体，同时由于阻尼活塞15为不导磁材料，第二环状通孔152内不会产生磁流变效应，因而产生的阻尼力很小，从而实现磁流变阻尼器的单向阻尼特性。In the present invention, the iron core 9, the magnet ring 10, and the magnet sleeve 13 are made of soft magnetic materials with high magnetic permeability, and the damping piston 15, the gland 8, and the coil sheath 12 are made of non-magnetic materials. As shown in Figure 10, when the electromagnetic coil 11 is energized, the illustrated magnetic field line circuit (the circuit formed by the arrow) will be formed, so that in the annular gap between the magnetic sleeve 13 and the iron core 9 and the magnetic ring 10 A magnetic field perpendicular to the flow direction of the magnetorheological fluid is formed. When the damping piston 15 moves upward, due to the pressure of the magnetorheological fluid in the upper cavity, the spring plate 16 seals the second annular through hole 152, so the magnetorheological fluid only It can flow in from the first annular through hole 151 and flow through the magneto-rheological fluid channel on the coil assembly to the lower cavity, thereby generating a certain damping force. By adjusting the strength of the magnetic field, the adjustment of the damping force can be realized; when the damping piston 15 When moving downward, the pressure of the lower cavity pushes away the spring piece 16, and the second annular through hole 152 is in an open state. Since the gap between the second annular through hole 152 is relatively large, most of the magnetorheological fluid passes through the second annular through hole 152. The annular through hole 152 flows to the upper cavity, and at the same time, because the damping piston 15 is a non-magnetic material, the second annular through hole 152 will not produce a magneto-rheological effect, so the damping force generated is very small, thereby realizing magneto-rheological One-way damping characteristics of the damper.
所述阻尼器是一种具有单向阻尼特性的磁流变阻尼器，具有在某一运动方向阻尼力很小，另一运动方向阻尼力可调的特点，因此能够充分发挥减振装置受到某一方向的突然冲击时弹簧的缓冲作用，同时由于单向阻尼特性可调，因此阻尼器具有很好的隔振、减振效果，并且具有适用范围广的优点。The damper is a magneto-rheological damper with one-way damping characteristics. It has the characteristics of small damping force in one direction of motion and adjustable damping force in the other direction of motion. The cushioning effect of the spring when there is a sudden impact in one direction, and because the one-way damping characteristic is adjustable, the damper has good vibration isolation and vibration reduction effects, and has the advantages of a wide range of applications.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610313665.7ACN105736624B (en) | 2016-05-12 | 2016-05-12 | Magneto-rheological damper with unidirectional damping property |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610313665.7ACN105736624B (en) | 2016-05-12 | 2016-05-12 | Magneto-rheological damper with unidirectional damping property |
| Publication Number | Publication Date |
|---|---|
| CN105736624A CN105736624A (en) | 2016-07-06 |
| CN105736624Btrue CN105736624B (en) | 2017-02-22 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610313665.7AActiveCN105736624B (en) | 2016-05-12 | 2016-05-12 | Magneto-rheological damper with unidirectional damping property |
| Country | Link |
|---|---|
| CN (1) | CN105736624B (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594160B (en)* | 2017-02-10 | 2018-12-14 | 哈尔滨工业大学 | Folding flow-type MR damper with wide adjustable extent |
| CN109099104B (en)* | 2018-10-17 | 2020-11-03 | 哈尔滨工业大学 | Water-cooling temperature-control fluid damper |
| CN110986188B (en)* | 2019-11-13 | 2020-11-24 | 珠海格力电器股份有限公司 | Variable rigidity callus on sole, compressor and air conditioner |
| CN112815031A (en)* | 2021-02-05 | 2021-05-18 | 大连理工大学 | Viscous damper for one-way non-return movement of liquid |
| CN113508690A (en)* | 2021-05-08 | 2021-10-19 | 河南科技大学 | A flexible threshing device that can automatically adjust the threshing gap |
| CN113790243B (en)* | 2021-10-08 | 2022-10-18 | 浙江路得坦摩汽车部件股份有限公司 | Damping piston of magnetorheological shock absorber and production process thereof |
| CN114483863A (en)* | 2022-01-27 | 2022-05-13 | 株洲时代新材料科技股份有限公司 | Magneto-rheological damper |
| CN114718977B (en)* | 2022-05-06 | 2024-01-26 | 重庆大学 | Magnetorheological oil-gas spring |
| CN114857199B (en)* | 2022-05-07 | 2023-06-13 | 北京理工大学 | Small adjustable large damping linear damper |
| CN114947984B (en)* | 2022-05-20 | 2024-07-12 | 江苏启灏医疗科技有限公司 | Safe living body sampling device |
| CN114909423A (en)* | 2022-06-21 | 2022-08-16 | 集美大学 | A New Type of Magnetorheological Fluid Damper |
| CN116104899A (en)* | 2023-02-02 | 2023-05-12 | 广西科技大学 | Double-annular-channel mixed magnetic-supply type valve magneto-rheological damper |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6135434A (en)* | 1998-02-03 | 2000-10-24 | Fox Factory, Inc. | Shock absorber with positive and negative gas spring chambers |
| CN101915281A (en)* | 2010-07-19 | 2010-12-15 | 谭和平 | Single-rod magnetorheological damper with one-way channel |
| CN202790299U (en)* | 2012-09-17 | 2013-03-13 | 成都市翻鑫家科技有限公司 | Novel magnetorheological fluid bumper |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8051961B2 (en)* | 2007-10-30 | 2011-11-08 | Honda Motor Co., Ltd. | Magneto-rheological damper |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6135434A (en)* | 1998-02-03 | 2000-10-24 | Fox Factory, Inc. | Shock absorber with positive and negative gas spring chambers |
| CN101915281A (en)* | 2010-07-19 | 2010-12-15 | 谭和平 | Single-rod magnetorheological damper with one-way channel |
| CN202790299U (en)* | 2012-09-17 | 2013-03-13 | 成都市翻鑫家科技有限公司 | Novel magnetorheological fluid bumper |
| Publication number | Publication date |
|---|---|
| CN105736624A (en) | 2016-07-06 |
| Publication | Publication Date | Title |
|---|---|---|
| CN105736624B (en) | Magneto-rheological damper with unidirectional damping property | |
| CN102121509B (en) | Magnetorheological damper with annular and disc-shaped liquid flow resistance channels simultaneously | |
| CN105065559B (en) | Parallel channel MR damper | |
| US12228189B2 (en) | Self-sensing and separated dual-cylinder magnetorheological damper | |
| CN104373500B (en) | External many circular holes damp channel MR damper | |
| CN104595412B (en) | Double-barrel structure magneto-rheological vibration damper based on flow pattern | |
| CN110778636A (en) | Bidirectional independently controllable magnetorheological damper | |
| CN103470674B (en) | A kind of Inner-channel vehicle suspension system magnetorheological damper | |
| CN201875043U (en) | Slide-valve-type magnetorheological shock absorber | |
| CN105240444B (en) | Magneto-rheological vibration damper based on parallel-connection structure | |
| CN206830715U (en) | Double magnetic fields MR dampers with mixing fluid course | |
| CN205618595U (en) | Magneto rheological damper with one -way damping characteristic | |
| CN206545666U (en) | The twin coil MR damper of effective damping gap length can be extended | |
| CN110701239B (en) | Vibration and buffering integrated device | |
| CN104033525B (en) | Large damping force MR damper | |
| CN206802174U (en) | Vehicle suspension Novel magneto-rheological damper with bypass fluid course | |
| CN101382177A (en) | Dual-channel magnetorheological damper with channel gating capability | |
| CN207989636U (en) | A kind of MR damper with helical spring floating piston arrangement | |
| CN107630968A (en) | Shock absorbers based on magnetorheological dampers | |
| CN108180250A (en) | A kind of built-in magnet valve improves the two-wire ring MR damper of damping capacity | |
| CN105782324A (en) | Solenoid valve assembly externally arranged on absorber and absorber | |
| CN102927191A (en) | Coil internally-installed type magnetorheological damper with oil needle | |
| CN112555328B (en) | Parallel radial magnetorheological valve and its shock absorber | |
| CN206617498U (en) | Simultaneously using double sleeve shock absorbers of two kinds of working medias of hydraulic oil and magnetic flow liquid | |
| CN206017548U (en) | A kind of coil external MR damper for extending effective damping gap length |
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |