WO2019011043A1 - Magneto-rheological damper having external coils - Google Patents

Magneto-rheological damper having external coils Download PDF

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Publication number
WO2019011043A1
WO2019011043A1 PCT/CN2018/084835 CN2018084835W WO2019011043A1 WO 2019011043 A1 WO2019011043 A1 WO 2019011043A1 CN 2018084835 W CN2018084835 W CN 2018084835W WO 2019011043 A1 WO2019011043 A1 WO 2019011043A1
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WIPO (PCT)
Prior art keywords
piston
sleeve
hydraulic cylinder
coil
damper
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PCT/CN2018/084835
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French (fr)
Chinese (zh)
Inventor
陈步高
张栋梁
曹福顺
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盐城市步高汽配制造有限公司
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Publication of WO2019011043A1 publication Critical patent/WO2019011043A1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/53Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
    • F16F9/535Magnetorheological [MR] fluid dampers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/3207Constructional features
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/42Cooling arrangements

Definitions

  • the invention belongs to the technical field of automobile vibration reduction, and particularly relates to a magnetorheological damper with an external coil.
  • the magnetorheological damper is widely used in the suspension system of automobile suspension.
  • the magnetorheological damper piston structure described in the patent CN201010621508.5 represents the structural characteristics of the existing magnetorheological damper, that is, the piston is circumferentially slotted to arrange the coil. A long hole is formed inside the piston rod to lead the wire.
  • the scheme is compact in structure, but the piston structure is complicated and the processing is difficult, especially the piston rod, the processing cost of the long hole is higher, and there are more restrictions on the structural optimization.
  • the damper converts the vibration energy into heat energy dissipation through damping, but the temperature rise will seriously affect the performance of the damper. Since the coil generates a magnetic field, the coil itself generates heat, and the coil is disposed inside the hydraulic cylinder, and the generated heat further aggravates the temperature rise in the damper and reduces the performance of the damper.
  • the present invention provides a magneto-rheological damper of an external coil, which arranges the coil on the outside of the hydraulic cylinder body, and through the ingenious structural design, not only the magnetorheological damper is achieved. It has the performance requirements, and has the advantages of simple structure, convenient heat dissipation, low cost and easy maintenance.
  • a magneto-rheological damper for an external coil comprising: a hydraulic cylinder body, a floating piston, a piston, a piston rod, a sealing cover, a coil, an outer cylinder, a dust seal, an outer end cover, a bottom limit member, a nut And a sleeve connected to the piston rod, located inside the hydraulic cylinder body, the piston rod extends through the sealing cover to the outside of the hydraulic cylinder, and the bottom end of the outer cylinder is fixed at the bottom limit by the nut
  • the bottom limiting member is fixedly connected to the outer cylinder tube
  • the hydraulic cylinder body is sleeved outside, and the sleeve is arranged with a double-stage coil
  • the piston is located at a central position of the double-stage coil
  • the piston A gap is provided between the inner wall of the hydraulic cylinder, the sleeve is fixed inside the outer cylinder, and a dustproof ring is mounted on the upper and lower ends of the sleeve, and
  • the piston, the piston rod, the sleeve, the coil, the outer cylinder, and the like are relatively stationary, and the piston in the horizontal direction is located at the center of the two-stage coil.
  • the outer part of the sleeve is a smooth cylindrical surface, and the interior includes, in order from top to bottom, a first dust ring groove, a first coil groove, a guide ring, a second coil groove, and a second dust ring groove.
  • the sleeve has the functions of the coil, the dust ring installation and the movement guide of the hydraulic cylinder.
  • the inner guide ring of the sleeve is provided with an axial groove for arranging connecting wires.
  • the outer end cap has a function of positioning the sleeve, and a groove formed with the sleeve after installation is used to mount the dust seal.
  • the inner cylinder has a large inner diameter at the upper end, a small inner diameter at the lower end, an inner diameter of the upper end is the same as an outer diameter of the sleeve, and a change in inner diameter is a boss structure, and the sleeve is fixed in cooperation with the outer end cover.
  • the built-in coil is changed to external, which simplifies the internal structure of the magnetorheological damper, reduces the difficulty of processing and assembly, and saves processing time and processing cost.
  • the coil is external, when the coil is faulty, it can be repaired, it will not affect the internal structure of the damper hydraulic cylinder, and will not pollute the magnetorheological fluid.
  • Figure 1 is a schematic view of the structure of the present invention.
  • Figure 2 is a partial cross-sectional view of the sleeve of the present invention.
  • Figure 3 is a structural view of the sleeve of the present invention.
  • FIG. 4 is a schematic view showing the structure of a magnetic field of the present invention.
  • a magnetorheological damper for an external coil as shown in FIG. 1 includes: a hydraulic cylinder 1, a floating piston 2, a piston 7, a piston rod 9, a sealing cover 10, a coil 5, an outer cylinder 11, and an anti-defense Dust ring 4, outer end cap 3, bottom stop member 13, nut 12 and sleeve 6.
  • the floating piston 2 functions to separate the compensation air chamber 14 from the hydraulic pressure chamber 15.
  • the piston 7 is connected to the piston rod 9 and is located inside the hydraulic cylinder body 1.
  • the piston rod 9 extends through the sealing cover 10 to the outside of the hydraulic cylinder block 1, and the bottom end
  • the nut 12 is fixed to the bottom stopper 13
  • the bottom stopper 13 is fixedly connected to the outer cylinder 11 .
  • the outer side of the hydraulic cylinder block 1 is sleeved with a double-stage coil 5, and the sleeve 6 is fixed inside the outer cylinder tube 11 by the cooperation of the outer cylinder tube 11 and the outer end cover 3, and the two ends are installed with dustproof Circle 4.
  • the piston 7, the piston rod 9, the sleeve 6, the coil 5, the outer cylinder 11 and the like are relatively stationary, and the piston 7 in the horizontal direction is located at the center of the two coils 5, and the piston and the inner wall of the cylinder A gap 18 is provided therebetween, and the surface of the coil 5 and the axial groove 602 are coated with a protective layer for protecting the wire 16 and the coil 5.
  • the dust seal 4 is disposed at both ends of the sleeve 6, and functions as a dustproof seal to prevent dust and particles from entering the sleeve 6 to increase friction between the guide ring 605 and the hydraulic cylinder block 1.
  • the outer portion of the sleeve 6 is a smooth cylindrical surface, and the interior includes, in order from top to bottom, a first dust ring groove 600, a first coil groove 601, a guide ring 605, and a second coil groove 603. a second dust ring groove 604, two coils are disposed in the first coil groove 601 and the second coil groove 603, and the dust seal 4 is mounted on the first dust ring groove 600 and the second dustproof In the ring groove 604, the sleeve 6 has the function of the installation position of the coil 5 and the dust-proof ring 4 and the movement guide of the hydraulic cylinder tube 1.
  • the sleeve 6 has an axial groove 602 therein for arranging the connection and the lead wire. 16.
  • the outer end cap 3 has the function of the positioning sleeve 6, and after installation, forms a first dust ring groove 600 with the sleeve 6 for mounting the dust seal 4.
  • the outer cylinder 11 has a large inner diameter at the upper end, a small inner diameter at the lower end, and an inner diameter at the upper end.
  • the outer diameter of the sleeve 6 is the same, and the inner diameter changes to a boss structure, and the outer end cover 3 is engaged with the fixing sleeve 6.
  • FIG. 4 is a schematic view showing the structure of the magnetic field of the damper magnetic field when the magnetorheological damper coil 5 is in operation.
  • the two coils 5 are connected in series but reversely wound, and the generated magnetic field forms a magnetic field structure as shown in FIG. 4 under the principle of repulsiveness of the same pole, and the magnetic field passes horizontally from the two coils 5 through the hydraulic cylinder 1 and to the piston 7
  • a damper passage 17 is formed perpendicular to the damper passage 17 between the hydraulic cylinder block 1, and a virtual damper passage 17 is formed between the inner wall of the cylinder and the gap 18.
  • the hydraulic cylinder 1 When the magnetorheological damper is in operation, the hydraulic cylinder 1 reciprocates up and down with respect to the piston 7 and the sleeve 6 under the action of an external force, and compresses the magnetorheological fluid through the damper passage 17 to cause the damper to generate a damping force. .
  • the magnitude of the current in the coil 5 By controlling the magnitude of the current in the coil 5 to control the magnetic field strength through the damper channel 17, thereby changing the rheological characteristics of the magnetorheological fluid in the damper channel 17, thereby changing the damping force of the damper, thereby achieving intelligent control of the damping force. purpose.
  • the invention changes the original built-in coil into an external coil, simplifies the internal structure of the magnetorheological damper, reduces the difficulty of processing and assembly, saves processing time and processing cost, and is convenient for maintenance and does not pollute the magnetic current.
  • the external coil is beneficial to the loss of heat of the coil, and does not heat the magnetorheological fluid, which is beneficial to the long-term stability of the heat dissipation and maintenance performance of the damper and prolongs the service life.
  • the technical means disclosed in the solution of the present invention is not limited to the technical means disclosed in the above embodiments, and includes a technical solution composed of any combination of the above technical features.

Abstract

A magneto-rheological damper having external coils, comprising a hydraulic cylinder body (1), a floating piston (2), a piston (7), a piston rod (9), a sealing cover (10), coils (5), an external cylinder barrel (11), dust rings (4), an external end cover (3), a bottom limiting member (13), a nut (12), and a bushing (6); the floating piston (2) is used for separating a compensation air chamber (14) and a hydraulic chamber (15); the piston (7) is connected to the piston rod (9), the bottom end is fixed to the bottom limiting member (13) by means of the nut (12), and the bottom limiting member (13) is fixedly connected to the external cylinder barrel (11); the bushing (6) is sheathed at the outside of the hydraulic cylinder body (1), the double-stage coils are arranged in the bushing, the dust rings (4) are mounted at two ends of the bushing, and the piston is located at the central position of the double-stage coils. When the damper operates, the hydraulic cylinder body reciprocates with respect to the external cylinder barrel and the piston, and the magnitude of a magnetic field of a damping channel between the piston and the hydraulic cylinder body can be controlled by controlling the magnitude of a current of the external coils, thereby changing properties of magneto-rheological fluid, achieving the purpose of controlling the magnitude of a damping force. The damper is easy to mount, has a simple structure, reduced production and maintenance costs, and a long service life.

Description

一种外置线圈的磁流变减振器Magnetorheological damper with external coil 技术领域Technical field
本发明属于汽车减振技术领域,尤其涉及一种外置线圈的磁流变减振器。The invention belongs to the technical field of automobile vibration reduction, and particularly relates to a magnetorheological damper with an external coil.
发明背景Background of the invention
随着汽车不断的普及应用,消费者对于汽车的要求也不断提高,汽车的舒适性与稳定性日益受到关注。为了提高汽车的驾驶舒适性与操纵稳定性,研究人员与各大零部件供应商不断开发新型的汽车减振技术。磁流变减振器作为一种阻尼可调的智能型减振器在汽车悬架减振系统上的应用越来越广泛。With the continuous popularization and application of automobiles, consumers' demands for automobiles are also constantly improving, and the comfort and stability of automobiles are receiving increasing attention. In order to improve the driving comfort and handling stability of the car, researchers and major component suppliers continue to develop new types of automotive vibration damping technology. As a kind of intelligent damper with adjustable damping, the magnetorheological damper is widely used in the suspension system of automobile suspension.
现有的磁流变减振器经过二十多年的不断研究改进,在性能上已经能够满足车辆设计的要求,但结构上的不足加大了磁流变减振器的加工装配难度,从而增加了成本,不利于进一步推广应用,例如授权专利CN201010621508.5所介绍的磁流变减振器活塞结构就代表了现有磁流变减振器的结构特点,即将活塞周向开槽来布置线圈,活塞杆内部开长孔用来引出导线。该方案结构紧凑,但是活塞结构复杂,加工难度大,尤其是活塞杆,长孔的加工成本更高且在结构优化上存有较多限制。同时,减振器通过阻尼作用将震动能量转化为热能耗散掉,但温升会严重影响减振器的性能。因为利用线圈产生磁场,线圈本身会有热量产生,将线圈布置在液压缸体内部,产生的热量会进一步加剧减振器内的温升作用,降低减振器性能。The existing magnetorheological damper has been continuously researched and improved over the past two decades, and has been able to meet the requirements of vehicle design in terms of performance, but the structural deficiencies have increased the difficulty in processing and assembling the magnetorheological damper. The cost is increased, which is not conducive to further promotion. For example, the magnetorheological damper piston structure described in the patent CN201010621508.5 represents the structural characteristics of the existing magnetorheological damper, that is, the piston is circumferentially slotted to arrange the coil. A long hole is formed inside the piston rod to lead the wire. The scheme is compact in structure, but the piston structure is complicated and the processing is difficult, especially the piston rod, the processing cost of the long hole is higher, and there are more restrictions on the structural optimization. At the same time, the damper converts the vibration energy into heat energy dissipation through damping, but the temperature rise will seriously affect the performance of the damper. Since the coil generates a magnetic field, the coil itself generates heat, and the coil is disposed inside the hydraulic cylinder, and the generated heat further aggravates the temperature rise in the damper and reduces the performance of the damper.
因此,设计不同结构的磁流变减振器已解决现有的问题是十分必要的,具有广阔的应用前景和经济价值。Therefore, it is necessary to design different structures of magnetorheological dampers to solve the existing problems, and it has broad application prospects and economic value.
发明内容Summary of the invention
为了解决上述问题,本发明提出一种外置线圈的磁流变减振器,该减振器将线圈布置在液压缸体的外面,通过巧妙的结构设计,不仅使磁流变减振器达到了应有的性能要求,同时具有结构简单、散热方便、成本较低、便于维护的优点。In order to solve the above problems, the present invention provides a magneto-rheological damper of an external coil, which arranges the coil on the outside of the hydraulic cylinder body, and through the ingenious structural design, not only the magnetorheological damper is achieved. It has the performance requirements, and has the advantages of simple structure, convenient heat dissipation, low cost and easy maintenance.
为了达到上述目的,本发明的技术方案是:In order to achieve the above object, the technical solution of the present invention is:
一种外置线圈的磁流变减振器,包括:液压缸体、浮动活塞、活塞、活塞杆、密封盖、线圈、外部缸筒、防尘圈、外部端盖、底部限位件、螺母和套筒,所述活塞与活塞杆相连,位于液压缸体内部,所述活塞杆穿过密封盖伸到液压缸体外,所述外部缸筒底端通过所述螺母固定在所述底部限位件上,所述底部限位件与所述外部缸筒固定连接,所述液压缸体外部套有套筒,所述套筒内布置有双级线圈,活塞位于双级线圈 中央位置,活塞与液压缸体内壁之间设有间隙,所述套筒固定在所述外部缸筒内部,套筒上下两端安装有防尘圈,所述浮动活塞设置在液压缸体内。A magneto-rheological damper for an external coil, comprising: a hydraulic cylinder body, a floating piston, a piston, a piston rod, a sealing cover, a coil, an outer cylinder, a dust seal, an outer end cover, a bottom limit member, a nut And a sleeve connected to the piston rod, located inside the hydraulic cylinder body, the piston rod extends through the sealing cover to the outside of the hydraulic cylinder, and the bottom end of the outer cylinder is fixed at the bottom limit by the nut In the position piece, the bottom limiting member is fixedly connected to the outer cylinder tube, the hydraulic cylinder body is sleeved outside, and the sleeve is arranged with a double-stage coil, the piston is located at a central position of the double-stage coil, and the piston A gap is provided between the inner wall of the hydraulic cylinder, the sleeve is fixed inside the outer cylinder, and a dustproof ring is mounted on the upper and lower ends of the sleeve, and the floating piston is disposed in the hydraulic cylinder.
所述活塞、活塞杆、套筒、线圈、外部缸筒等相对静止,且保证水平方向上活塞位于双级线圈中央位置。所述套筒外部为光滑圆柱面,内部从上到下依次包括:第一防尘圈凹槽,第一线圈凹槽、导向环、第二线圈凹槽、第二防尘圈凹槽。所述套筒同时具有线圈、防尘圈安装定位与所述液压缸筒运动导向的作用。所述套筒内部导向环上开有轴向凹槽,用以布置连接导线。所述外部端盖具有定位所述套筒的功能,在安装后与所述套筒形成的凹槽用于安装所述防尘圈。所述外部缸筒内部上端内径大,下端内径小,上端内径与所述套筒外径相同,内径变化处为凸台结构,与所述外部端盖配合固定所述套筒。The piston, the piston rod, the sleeve, the coil, the outer cylinder, and the like are relatively stationary, and the piston in the horizontal direction is located at the center of the two-stage coil. The outer part of the sleeve is a smooth cylindrical surface, and the interior includes, in order from top to bottom, a first dust ring groove, a first coil groove, a guide ring, a second coil groove, and a second dust ring groove. The sleeve has the functions of the coil, the dust ring installation and the movement guide of the hydraulic cylinder. The inner guide ring of the sleeve is provided with an axial groove for arranging connecting wires. The outer end cap has a function of positioning the sleeve, and a groove formed with the sleeve after installation is used to mount the dust seal. The inner cylinder has a large inner diameter at the upper end, a small inner diameter at the lower end, an inner diameter of the upper end is the same as an outer diameter of the sleeve, and a change in inner diameter is a boss structure, and the sleeve is fixed in cooperation with the outer end cover.
本发明的有益效果是:The beneficial effects of the invention are:
1、将内置的线圈改为外置,简化了磁流变减振器的内部结构,降低了加工与装配难度,节约了加工时间与加工成本。1. The built-in coil is changed to external, which simplifies the internal structure of the magnetorheological damper, reduces the difficulty of processing and assembly, and saves processing time and processing cost.
2、线圈外置,当线圈发生故障时可以进行维修,不会影响减振器液压缸体内部结构,也不会污染磁流变液。2, the coil is external, when the coil is faulty, it can be repaired, it will not affect the internal structure of the damper hydraulic cylinder, and will not pollute the magnetorheological fluid.
3、有利于线圈热量散失,不会加热磁流变液,有利于减振器散热与维持性能的持久稳定性。3. It is beneficial to the heat loss of the coil and will not heat the magnetorheological fluid, which is beneficial to the heat dissipation of the damper and the long-term stability of the maintenance performance.
附图说明DRAWINGS
图1为本发明的结构示意图。Figure 1 is a schematic view of the structure of the present invention.
图2为本发明所述的套筒部分剖视图。Figure 2 is a partial cross-sectional view of the sleeve of the present invention.
图3为本发明所述的套筒结构图。Figure 3 is a structural view of the sleeve of the present invention.
图4为本发明的磁场结构示意图。4 is a schematic view showing the structure of a magnetic field of the present invention.
图中:1——液压缸体,2——浮动活塞,3——外部端盖,4——防尘圈,5——线圈,6——套筒,7——活塞,8——保护层,9——活塞杆,10——密封盖,11——外部缸筒,12——螺母,13——底部限位件,14——补偿气室,15——液压腔,16——导线,17——阻尼通道,18——间隙,600——第一防尘圈凹槽,601——第一线圈凹槽,602——轴向凹槽,603——第二线圈凹槽,604——第二防尘圈凹槽,605——导向环。In the picture: 1 - hydraulic cylinder block, 2 - floating piston, 3 - external end cap, 4 - dust ring, 5 - coil, 6 - sleeve, 7 - piston, 8 - protection Layer, 9 - piston rod, 10 - sealing cover, 11 - outer cylinder, 12 - nut, 13 - bottom limit, 14 - compensation chamber, 15 - hydraulic chamber, 16 - Conductor, 17 - damper channel, 18 - gap, 600 - first wiper groove, 601 - first coil groove, 602 - axial groove, 603 - second coil groove, 604 - second dust ring groove, 605 - guide ring.
具体实施方式Detailed ways
下面结合附图和具体实施方式进一步阐述本发明,应理解下述具体实施方式仅用于本发明但不用于限制本发明的范围。需要说明的是,下面描述中使用的词语“前“、”“后”、“左”、“右”、“上”和“下”指的是附图中表示的方向。The invention is further described in the following with reference to the accompanying drawings and specific embodiments. It is to be noted that the terms "front", "back", "left", "right", "upper" and "lower" as used in the following description refer to the directions indicated in the drawings.
如图1所示的一种外置线圈的磁流变减振器,包括:液压缸体1、浮动活塞2、活塞7、活塞杆9、密封盖10、线圈5、外部缸筒11、防尘圈4、外部端盖3、底部限位件13、螺母12和套筒6。浮动活塞2起到分离补偿气室14与液压腔15的作用,活塞7与活塞杆9相连,位于液压缸体1内部,活塞杆9穿过密封盖10伸到液压缸体1外,底端通过螺母12固定在底部限位件13上,底部限位件13与外部缸筒11固定连接。液压缸体1外部套有套筒6,套筒内布置有双级线圈5,套筒6通过外部缸筒11与外部端盖3的配合固定在外部缸筒11内部,两端安装有防尘圈4。A magnetorheological damper for an external coil as shown in FIG. 1 includes: a hydraulic cylinder 1, a floating piston 2, a piston 7, a piston rod 9, a sealing cover 10, a coil 5, an outer cylinder 11, and an anti-defense Dust ring 4, outer end cap 3, bottom stop member 13, nut 12 and sleeve 6. The floating piston 2 functions to separate the compensation air chamber 14 from the hydraulic pressure chamber 15. The piston 7 is connected to the piston rod 9 and is located inside the hydraulic cylinder body 1. The piston rod 9 extends through the sealing cover 10 to the outside of the hydraulic cylinder block 1, and the bottom end The nut 12 is fixed to the bottom stopper 13 , and the bottom stopper 13 is fixedly connected to the outer cylinder 11 . The outer side of the hydraulic cylinder block 1 is sleeved with a double-stage coil 5, and the sleeve 6 is fixed inside the outer cylinder tube 11 by the cooperation of the outer cylinder tube 11 and the outer end cover 3, and the two ends are installed with dustproof Circle 4.
如图2所示,活塞7、活塞杆9、套筒6、线圈5、外部缸筒11等相对静止,且保证水平方向上活塞7位于两个线圈5中央位置,活塞与液压缸体内壁之间设有间隙18,线圈5表面与轴向凹槽602内涂有保护层,用来保护导线16与线圈5。防尘圈4布置在套筒6两端,起到防尘密封的作用,防止灰尘、微粒进入套筒6增加导向环605与液压缸体1间的摩擦。As shown in FIG. 2, the piston 7, the piston rod 9, the sleeve 6, the coil 5, the outer cylinder 11 and the like are relatively stationary, and the piston 7 in the horizontal direction is located at the center of the two coils 5, and the piston and the inner wall of the cylinder A gap 18 is provided therebetween, and the surface of the coil 5 and the axial groove 602 are coated with a protective layer for protecting the wire 16 and the coil 5. The dust seal 4 is disposed at both ends of the sleeve 6, and functions as a dustproof seal to prevent dust and particles from entering the sleeve 6 to increase friction between the guide ring 605 and the hydraulic cylinder block 1.
如图3所示,套筒6外部为光滑圆柱面,内部从上到下依次包括:第一防尘圈凹槽600、第一线圈凹槽601、导向环605、第二线圈凹槽603、第二防尘圈凹槽604,两个线圈设置在第一线圈凹槽601、第二线圈凹槽603内,所述防尘圈4装在第一防尘圈凹槽600、第二防尘圈凹槽604内,套筒6同时具有线圈5、防尘圈4的安装定位与液压缸筒1运动导向的作用,套筒6内部开有轴向凹槽602,用以布置连接与引出导线16。外部端盖3具有定位套筒6的功能,在安装后与套筒6形成第一防尘圈凹槽600用于安装防尘圈4,外部缸筒11上端内径大,下端内径小,上端内径与套筒6外径相同,内径变化处为凸台结构,与外部端盖3配合固定套筒6。As shown in FIG. 3, the outer portion of the sleeve 6 is a smooth cylindrical surface, and the interior includes, in order from top to bottom, a first dust ring groove 600, a first coil groove 601, a guide ring 605, and a second coil groove 603. a second dust ring groove 604, two coils are disposed in the first coil groove 601 and the second coil groove 603, and the dust seal 4 is mounted on the first dust ring groove 600 and the second dustproof In the ring groove 604, the sleeve 6 has the function of the installation position of the coil 5 and the dust-proof ring 4 and the movement guide of the hydraulic cylinder tube 1. The sleeve 6 has an axial groove 602 therein for arranging the connection and the lead wire. 16. The outer end cap 3 has the function of the positioning sleeve 6, and after installation, forms a first dust ring groove 600 with the sleeve 6 for mounting the dust seal 4. The outer cylinder 11 has a large inner diameter at the upper end, a small inner diameter at the lower end, and an inner diameter at the upper end. The outer diameter of the sleeve 6 is the same, and the inner diameter changes to a boss structure, and the outer end cover 3 is engaged with the fixing sleeve 6.
如图4所示为磁流变减振器线圈5工作时减振器磁场磁路结构示意图。两个线圈5串联连接但是反向缠绕,产生的磁场在同极相斥的原理下形成如图4所示的磁场结构,磁场从两个线圈5间水平通过液压缸体1,并与活塞7与液压缸体1间的阻尼通道17垂直,液压缸体内壁与间隙18之间形成一个虚拟的阻尼通道17。FIG. 4 is a schematic view showing the structure of the magnetic field of the damper magnetic field when the magnetorheological damper coil 5 is in operation. The two coils 5 are connected in series but reversely wound, and the generated magnetic field forms a magnetic field structure as shown in FIG. 4 under the principle of repulsiveness of the same pole, and the magnetic field passes horizontally from the two coils 5 through the hydraulic cylinder 1 and to the piston 7 A damper passage 17 is formed perpendicular to the damper passage 17 between the hydraulic cylinder block 1, and a virtual damper passage 17 is formed between the inner wall of the cylinder and the gap 18.
当磁流变减振器工作时,液压缸体1在外力的作用下相对于活塞7与套筒6等部件上下往复运动,压迫磁流变液通过阻尼通道17而使减振器产生阻尼力。通过控制线圈5内电流的大小来控制通过阻尼通道17的磁场强度,从而改变阻尼通道17内磁流变液的流变特性,进而改变减振器的阻尼力,从而达到对阻尼力智能控制的目的。When the magnetorheological damper is in operation, the hydraulic cylinder 1 reciprocates up and down with respect to the piston 7 and the sleeve 6 under the action of an external force, and compresses the magnetorheological fluid through the damper passage 17 to cause the damper to generate a damping force. . By controlling the magnitude of the current in the coil 5 to control the magnetic field strength through the damper channel 17, thereby changing the rheological characteristics of the magnetorheological fluid in the damper channel 17, thereby changing the damping force of the damper, thereby achieving intelligent control of the damping force. purpose.
本发明将原来的内置线圈改为外置线圈,简化了磁流变减振器的内部结构,降低了加工与装配难度,节约了加工时间与加工成本,而且维修方便,也不会污染磁流变液,线圈外置有利于线圈热量散失,不会加热磁流变液,有利于减振器散热与维持性能的持久稳定性,延长了使用寿命。The invention changes the original built-in coil into an external coil, simplifies the internal structure of the magnetorheological damper, reduces the difficulty of processing and assembly, saves processing time and processing cost, and is convenient for maintenance and does not pollute the magnetic current. Changing the liquid, the external coil is beneficial to the loss of heat of the coil, and does not heat the magnetorheological fluid, which is beneficial to the long-term stability of the heat dissipation and maintenance performance of the damper and prolongs the service life.
本发明方案所公开的技术手段不仅限于上述实施方式所公开的技术手段,还包括由以上技术特征任意组合所组成的技术方案。The technical means disclosed in the solution of the present invention is not limited to the technical means disclosed in the above embodiments, and includes a technical solution composed of any combination of the above technical features.

Claims (5)

  1. 一种外置线圈的磁流变减振器,其特征在于:包括:液压缸体、浮动活塞、活塞、活塞杆、密封盖、线圈、外部缸筒、防尘圈、外部端盖、底部限位件、螺母和套筒,所述活塞与活塞杆相连,位于液压缸体内部,所述活塞杆穿过密封盖伸到液压缸体外,所述外部缸筒底端通过所述螺母固定在所述底部限位件上,所述底部限位件与所述外部缸筒固定连接,所述液压缸体外部套有套筒,所述套筒内布置有双级线圈,活塞位于双级线圈中央位置,活塞与液压缸体内壁之间设有间隙,所述套筒固定在所述外部缸筒内部,套筒上下两端安装有防尘圈,所述浮动活塞设置在液压缸体内。A magnetorheological damper for an external coil, comprising: a hydraulic cylinder body, a floating piston, a piston, a piston rod, a sealing cover, a coil, an outer cylinder tube, a dustproof ring, an outer end cover, and a bottom limit a position member, a nut and a sleeve, the piston being connected to the piston rod and located inside the hydraulic cylinder body, the piston rod extending through the sealing cover to the outside of the hydraulic cylinder, the bottom end of the outer cylinder being fixed by the nut The bottom limiting member is fixedly connected to the outer cylinder tube, the hydraulic cylinder body is sleeved outside, a double-stage coil is arranged in the sleeve, and the piston is located in the double-stage coil In the central position, a gap is provided between the piston and the inner wall of the hydraulic cylinder, the sleeve is fixed inside the outer cylinder, and a dustproof ring is mounted on the upper and lower ends of the sleeve, and the floating piston is disposed in the hydraulic cylinder.
  2. 根据权利要求1所述的一种外置线圈的磁流变减振器,其特征在于:所述套筒外部为光滑圆柱面,内部从上到下依次包括:第一防尘圈凹槽,第一线圈凹槽、导向环、第二线圈凹槽、第二防尘圈凹槽。The magnetorheological damper of an external coil according to claim 1, wherein the outer portion of the sleeve is a smooth cylindrical surface, and the interior includes, in order from top to bottom, a first dust ring groove. a first coil groove, a guide ring, a second coil groove, and a second dust ring groove.
  3. 根据权利要求1所述的一种外置线圈的磁流变减振器,其特征在于:所述套筒内部导向环上开有轴向凹槽。The magnetorheological damper of an external coil according to claim 1, wherein the inner guide ring of the sleeve is provided with an axial groove.
  4. 根据权利要求3所述的一种外置线圈的磁流变减振器,其特征在于:所述轴向凹槽内涂有保护层。The magnetorheological damper of an external coil according to claim 3, wherein the axial groove is coated with a protective layer.
  5. 根据权利要求1所述的一种外置线圈的磁流变减振器,其特征在于:所述外部缸筒内部上端内径大,下端内径小,上端内径与所述套筒外径相同,内径变化处为凸台结构,与所述外部端盖配合固定所述套筒。The magnetorheological damper of an external coil according to claim 1, wherein the outer cylinder has an inner diameter at the upper end, a lower inner diameter, and an inner diameter of the upper end is the same as the outer diameter of the sleeve. The change is a boss structure, and the sleeve is fixed in cooperation with the outer end cap.
PCT/CN2018/084835 2017-07-13 2018-04-27 Magneto-rheological damper having external coils WO2019011043A1 (en)

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