Double-shaft magneto-rheological damping regulator and suspension system thereof

Abstract

The utility model relates to the technical field of motion damper equipment taking fluid or equivalent objects as damping media, and particularly discloses a double-shaft magneto-rheological damping regulator and a suspension system thereof, which comprise a main shell, a damping regulating sleeve piece arranged in the main shell and a shaft body sleeve piece connected with the damping regulating sleeve piece and extending out of the main shell. Wherein the shaft body external member comprises two shaft bodies in total. The utility model has the beneficial effects that the two included shaft bodies can be respectively connected with external connecting pieces, so that the requirement of controlling the rotation of two parts by using double shaft bodies in a suspension system is met; meanwhile, the permanent magnet ring block is arranged in the damping regulator and can always provide a magnetic field, and the damping effect can be relieved only when the coil is electrified to generate an opposite magnetic field to offset the magnetic field of the permanent magnet ring block, so that the damping regulator can keep a certain damping effect under the fault conditions of no electrification, especially power failure and the like; and related accidents are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of motion damper devices using fluid or equivalents as damping media, and particularly relates to a biaxial magnetorheological damping regulator and its suspension system. Background Art

[0002] Magnetorheological fluid is an intelligent material composed of magnetic particles, base carrier fluid and additives. In the absence of a magnetic field, the magnetorheological fluid exhibits the characteristics of a Newtonian fluid with low viscosity; while under the action of a magnetic field, the magnetic particles are arranged in a chain-like structure along the magnetic field direction, making the viscosity of the magnetorheological fluid increase sharply and showing properties similar to solids.

[0003] A magnetorheological damping regulator is an intelligent damper. It utilizes the rheological characteristics of magnetorheological fluid under the action of a magnetic field, so that the magnetic conductive component is in contact with the magnetorheological fluid, and then the magnetic field strength is changed by adjusting the current to change the frictional force between the magnetorheological fluid and the magnetic conductive component, so as to limit the movement of the magnetic conductive component to form a damping effect.

[0004] Among them, the magnetorheological damping technology has the same technical principle and similar structure as that of the magnetorheological brake. In the prior art, for example, the patent with the patent application number 201820478934.X discloses a disc-type magnetorheological brake excited by an annular permanent magnet and an excitation coil. It mainly consists of a rotating shaft, a cylinder, a magnetic conductive disc, a rotating disc, an inner sleeve, an annular bracket, an end cover, an annular permanent magnet and an excitation coil, etc. An annular permanent magnet is added in the groove of the annular bracket of the brake to provide a fixed magnetic field for the magnetorheological fluid at the four radial disc damping gaps; at the same time, an excitation coil is wound around the annular permanent magnet to provide a variable magnetic field for the magnetorheological fluid at the four radial disc damping gaps; the excitation coil and the annular permanent magnet are used in combination to form three working modes. In the case of power failure of the excitation coil, the annular permanent magnet can still provide a certain damping torque for the brake, improving the automatic fault prevention performance of the brake. In addition, the excitation coil is axially placed between the two rotating discs, effectively reducing the radial size of the brake.

[0005] However, the magnetorheological brakes in the prior art only involve the control of a single shaft body. Nowadays, in fields such as the suspension system in the automotive manufacturing industry, the demand for magnetorheological damping regulators or brakes for multiple shaft bodies is increasing. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to provide a biaxial magnetorheological damping regulator. The structure of the magnetorheological damping regulator is clear and reasonable, which can realize the normal assembly of the magnetorheological damping regulator; at the same time, the magnetorheological damping regulator can perform damping adjustment on two shaft bodies, meeting the requirement of simultaneous control of two shaft bodies in fields such as the suspension system.

[0007] The present utility model is realized through the following technical solutions:

[0008] A biaxial magnetorheological damper regulator, characterized in that it includes a general housing, a damping adjustment kit placed in the general housing, and a shaft body kit connected to the damping adjustment kit and extending out of the general housing; the shaft body kit includes a first shaft body and a second shaft body sleeved outside the first shaft body, and an exposed extension section is arranged on the first shaft body for connecting with an external connecting member; the general housing includes a first magnetic conductive end cover, a second magnetic conductive end cover, and a magnetic conductive connecting ring block connecting the two, and an axial outlet is arranged on the first magnetic conductive end cover; in the damping adjustment kit, a second magnetic conductive friction disc and a first magnetic conductive friction disc are sequentially arranged along the axial direction of the first shaft body from the extension section, the second magnetic conductive friction disc is connected to the second shaft body, and the first magnetic conductive friction disc is connected to the first shaft body; a coil, a permanent magnetic ring block, and a magnetic isolation ring block are sequentially arranged along the radial direction from the edge of the magnetic conductive connecting ring block; wherein the magnetic isolation ring block separates and generates a magnetorheological fluid accommodation space in the general housing, and both the second magnetic conductive friction disc and the first magnetic conductive friction disc are placed in the magnetorheological fluid accommodation space.

[0009] As a further improvement of the present utility model, a magnetic conductive ring block is arranged between the second magnetic conductive friction disc and the first magnetic conductive friction disc, the inner diameter edge of the magnetic conductive ring block is close to the shaft body kit, and the outer diameter edge of the magnetic conductive ring block passes through a limiting port opened on the magnetic isolation ring block and is connected to the permanent magnetic ring block.

[0010] As a further improvement of the present utility model, a sealing and separating member is arranged between the limiting port and the magnetic conductive ring block.

[0011] As a further improvement of the present utility model, a limiting convex part is arranged on the second magnetic conductive end cover, and the inner cavity of the limiting convex part is used to accommodate and limit the other end of the first shaft body far from the extension section.

[0012] As a further improvement of the present utility model, a limiting ring block is arranged on the outer side of the first magnetic conductive end cover, and the limiting ring block is sleeved outside the second shaft body to limit the shaft body kit.

[0013] As a further improvement of the present utility model, antifriction elements are arranged between the limiting convex part and the first shaft body, between the limiting ring block and the second shaft body, and between the first shaft body and the second shaft body.

[0014] As a further improvement of the present utility model, the antifriction element is a ball bearing.

[0015] As a further improvement of the present utility model, a sealing structure is provided between the second shaft body and the shaft outlet, between the first shaft body and the limiting convex part, and between the first shaft body and the second shaft body.

[0016] As a further improvement of the present utility model, the sealing structure is a sealing ring.

[0017] In a second aspect, the present utility model provides a suspension system equipped with the above-mentioned dual-axis magnetorheological damper regulator.

[0018] The beneficial effects of the present utility model include:

[0019] (1) The two shaft bodies included in the damper regulator can be respectively connected to external connectors, enabling the two groups of external connectors to rotate around the damper regulator respectively, meeting the requirements of controlling the rotation of multiple components by using multiple shaft bodies in, for example, a suspension system.

[0020] (2) In the present utility model, the permanent magnet ring block can always provide a magnetic field, and only when a reverse magnetic field is generated by the energization of the coil to cancel the magnetic field of the permanent magnet ring block, the damping effect will be reduced. Therefore, in the case of power failure or other faults, especially when the power is off, the damper regulator can maintain a certain damping effect, preventing accidents caused by the loss of the damping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following drawings are provided for combination with the preferred embodiments of the present utility model to help understand the purpose and advantages of the present utility model, where:

[0022] Figure 1 is a schematic cross-sectional view of the structure of the dual-axis magnetorheological damper regulator;

[0023] Figure 2 is a schematic diagram of the magnetic field of the permanent magnet ring block in the dual-axis magnetorheological damper regulator;

[0024] Figure 3 is a schematic diagram of the magnetic field of the coil in the dual-axis magnetorheological damper regulator;

[0025] Figure 4 is a schematic diagram of the layout of the magnetic rheological fluid flow path;

[0026] Figure 5 is a schematic diagram of the structure of the dual-axis magnetorheological damper regulator after installation;

[0027] Figure 6 is a schematic diagram of the changed structure during the use of the dual-axis magnetorheological damper regulator.

[0028] The reference numerals include:

[0029] The total housing 1, the first magnetic conductive end cover 101, the limiting ring block 101-1, the second magnetic conductive end cover 102, the limiting convex part 102-1, the magnetic conductive connecting ring block 103;

[0030] The shaft body kit 2, the first shaft body 201, the extending section 201-1, the second shaft body 202;

[0031] The damping adjustment kit 3, the first magnetic conductive friction disc 301, the second magnetic conductive friction disc 302, the coil 303, the permanent magnet ring block 304, the magnetic isolation ring block 305, the magnetic conductive ring block 306, the sealing and separating part 307;

[0032] The friction reducing element 4; the sealing structure 5; the installation part 6; the magnetic rheological fluid flow path L; the main body part A; the support B; the roller C. Specific embodiments

[0033] The present utility model will be further described in detail below with reference to the drawings and embodiments.

[0034] The orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc. mentioned or possibly mentioned in this specification are defined with respect to the structures shown in the respective drawings. The terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. They are relative concepts and may therefore change accordingly depending on their different positions and different usage states. Therefore, these or other orientation terms should not be construed as restrictive terms.

[0035] Embodiment 1:

[0036] This embodiment provides a dual-axis magnetic rheological damper, as Figure 2 shown, which includes a total housing 1, a damping adjustment kit 3, and a shaft body kit 2. Among them, the damping adjustment kit 3 is placed in the total housing 1, one end of the shaft body kit 2 is placed in the total housing 1 and connected to the damping adjustment kit 3, and the other end extends outside the total housing 1.

[0037] Among them, as Figure 1 shown, the shaft body kit 2 includes a first shaft body 201 and a second shaft body 202 sleeved outside the first shaft body 201. One end of both the first shaft body 201 and the second shaft body 202 extends outside the total housing 1. As Figure 1 shown, an exposed extending section 201-1 that is not covered by the second shaft body 202 is provided on the first shaft body 201 for connecting the first shaft body 201 with an external connecting member.

[0038] The main body of the overall housing 1 mainly includes a first magnetic conductive end cover 101, a second magnetic conductive end cover 102, and a magnetic conductive connecting ring block 103 connecting the two. The three jointly form a sealed accommodation space for accommodating components such as the damping adjustment kit 3. An output shaft opening is provided on the first magnetic conductive end cover 101 for the first shaft body 201 and the second shaft body 202 to extend out.

[0039] In this embodiment, the layout of the damping adjustment kit 3 mainly follows two ideas. One is the layout idea of two magnetic conductive friction discs. As Figure 1 described, a second magnetic conductive friction disc 302 and a first magnetic conductive friction disc 301 are sequentially arranged along the axial direction of the first shaft body 201 from the extending section 201-1. Among them, the second magnetic conductive friction disc 302 is connected to the second shaft body 202, and the first magnetic conductive friction disc 301 is connected to the first shaft body 201.

[0040] The other is the layout idea of the coil 303, the permanent magnet ring block 304, and the magnetic isolation ring block 305. As Figure 1 shown, a coil 303, a permanent magnet ring block 304, and a magnetic isolation ring block 305 are sequentially arranged along the radial direction from the edge of the magnetic conductive connecting ring block 103.

[0041] Among them, the magnetic isolation ring block 305 divides and generates a magnetorheological fluid accommodation space in the accommodation space of the overall housing 1. The second magnetic conductive friction disc 302 and the first magnetic conductive friction disc 301 are both placed in the magnetorheological fluid accommodation space. Therefore, when the magnetorheological fluid is poured into the magnetorheological fluid accommodation space, the second magnetic conductive friction disc 302 and the first magnetic conductive friction disc 301 are both immersed in the magnetorheological fluid.

[0042] In this utility model, through the mutual cooperation among the layout of the magnetic conductive components, the layout of the magnetic isolation components, and the layout of the magnetic field source, the magnetic field of the permanent magnet ring block 304 is as Figure 2 described. It can vertically pass through the disc surfaces of the first magnetic conductive friction disc 301 and the second magnetic conductive friction disc 302. This enables the magnetic particles of the magnetorheological fluid to be arranged in a chain structure along the magnetic field direction when the magnetic field of the permanent magnet ring block 304 is not affected by the outside world, thereby preventing the rotation of the first magnetic conductive friction disc 301 and the second magnetic conductive friction disc 302 and further preventing the rotation of the first shaft body 201 and the second shaft body 202, achieving a damping effect.

[0043] Meanwhile, when the coil 303 is powered, its magnetic field structure can be as Figure 3As shown. When the magnetic field direction of the coil 303 is opposite to that of the permanent magnet ring block 304 after the current is supplied, the magnetic field of the permanent magnet ring block 304 can be cancelled to different degrees according to different magnitudes of the current, thereby controlling the reduction degree of the damping effect; when the magnetic field direction of the coil 303 is the same as that of the permanent magnet ring block 304 after the current is supplied, the magnetic field of the permanent magnet ring block 304 can be strengthened to different degrees according to different magnitudes of the current, thereby controlling the enhancement degree of the damping effect.

[0044] And since the effect of reducing damping can only be achieved when the coil 303 is energized, in the event of a power failure or other accidents, the damping regulator can retain the corresponding damping effect, avoiding the occurrence of dangerous accidents caused by the disappearance of damping.

[0045] Preferably, a magnetic conduction ring block 306 is arranged between the second magnetic conduction friction disc 302 and the first magnetic conduction friction disc 301. The inner diameter edge of the magnetic conduction ring block 306 is close to the shaft body kit 2, and the outer diameter edge of the magnetic conduction ring block 306 passes through the limiting port opened on the magnetic isolation ring block 305 and is connected to the permanent magnet ring block 304. In this structure, it is beneficial to guide the magnetic field direction passing through the disc surfaces of the second magnetic conduction friction disc 302 and the first magnetic conduction friction disc 301 to avoid the disorder of the magnetic field; at the same time, after adding this structure, as Figure 4 shown, a more tortuous magnetic rheological fluid flow path L is formed in the magnetic rheological fluid accommodation space, so that the magnetic rheological fluid can be more fully exposed to the magnetic field during the flow process, increasing the contact time and area between the magnetic particles and the magnetic field. At the same time, due to the characteristic of the magnetic rheological fluid that its rheological properties will change rapidly under the action of the magnetic field, enhancing the magnetic field effect can significantly increase its shear stress, thereby increasing the damping effect.

[0046] Preferably, a sealing and separating member 307 is arranged between the limiting port and the magnetic conduction ring block 306.

[0047] Preferably, a limiting convex portion 102-1 is arranged on the second magnetic conduction end cover 102. The inner cavity of the limiting convex portion 102-1 is used to accommodate and limit the other end of the first shaft body 201 away from the protruding section 201-1, and it cooperates with the shaft outlet to avoid the damage of the damping regulator caused by the deviation of the central axis during the rotation of the first shaft body 201.

[0048] Preferably, a limiting ring block 101-1 is arranged on the outer side of the first magnetic conduction end cover 101. The inner wall of the limiting ring block 101-1 is in contact with the outer wall of the second shaft body 202 to further limit the shaft body kit 2 to prevent the deviation of its central axis.

[0049] Preferably, antifriction elements 4 are provided between the limiting convex part 102-1 and the first shaft body 201, between the limiting ring block 101-1 and the second shaft body 202, and between the first shaft body 201 and the second shaft body 202. In this embodiment, the antifriction element 4 is a ball bearing.

[0050] Preferably, sealing structures 5 are provided between the second shaft body 202 and the shaft outlet, between the first shaft body 201 and the limiting convex part 102-1, and between the first shaft body 201 and the second shaft body 202, which can further improve the overall sealing performance of the magnetorheological fluid accommodation space to prevent the magnetorheological fluid from leaking during long-term use. In this embodiment, the sealing structure 5 is a sealing ring.

[0051] Preferably, as Figure 1 shown, an installation part 6 is provided on the second magnetic conductive end cover 102. In this embodiment, the installation part 6 is an installation ring block provided at the edge of the second magnetic conductive end cover 102, and a plurality of installation through holes are provided on the installation ring block to facilitate the installation of the damping regulator on an external component.

[0052] In this embodiment, the dual-axis magnetorheological damper can be assembled normally. Specifically, the assembly process of the dual-axis magnetorheological damper follows the overall idea from bottom to top and from inside to outside.

[0053] First, place the second magnetic conductive end cover 102 at the bottommost part, and then, taking this as a support, gradually place the corresponding components from bottom to top according to the structure shown in the appendix. For the components located on the same horizontal plane, such as the permanent magnet ring block 304 and the coil 303, they are assembled according to the idea from inside to outside. Finally, cover the first magnetic conductive end cover 101 on the formed damping adjustment kit 3 and tightly connect it to the magnetic conductive connection ring block 103 to complete the preliminary installation of the dual-axis magnetorheological damper structure. Figure 1 Subsequently, pass an electric current through the coil 303 in the dual-axis magnetorheological damper so that the magnetic field generated by the coil 303 can completely cancel the magnetic field generated by the permanent magnet ring block 304. At this time, add magnetorheological fluid through the liquid injection holes opened on the first magnetic conductive end cover 101 and the second magnetic conductive end cover 102. Since there is no magnetic field interference from the permanent magnet ring block 304, the magnetorheological fluid exhibits fluid characteristics at this step and can be quickly and smoothly added into the magnetorheological fluid accommodation space and filled. After the magnetorheological fluid injection is completed, an oil separation material can be used to seal the liquid injection holes to ensure the overall sealing effect of the magnetorheological fluid accommodation space. Thus, the complete installation of the dual-axis magnetorheological damper is completed.

[0054] Subsequently, pass an electric current through the coil 303 in the dual-axis magnetorheological damper so that the magnetic field generated by the coil 303 can completely cancel the magnetic field generated by the permanent magnet ring block 304. At this time, add magnetorheological fluid through the liquid injection holes opened on the first magnetic conductive end cover 101 and the second magnetic conductive end cover 102. Since there is no magnetic field interference from the permanent magnet ring block 304, the magnetorheological fluid exhibits fluid characteristics at this step and can be quickly and smoothly added into the magnetorheological fluid accommodation space and filled. After the magnetorheological fluid injection is completed, an oil separation material can be used to seal the liquid injection holes to ensure the overall sealing effect of the magnetorheological fluid accommodation space. Thus, the complete installation of the dual-axis magnetorheological damper is completed.

[0055] Embodiment 2:

[0056] This embodiment involves the application of the dual-axis magnetorheological damper in Embodiment 1. AsFigure 5 As shown, a simple suspension system is presented, on which the biaxial magnetorheological damper regulator in Embodiment 1 is installed. The total housing 1 is installed on the main body part A. The first shaft body 201 and the second shaft body 202 are respectively fixedly connected to two support rods B, and rollers C are provided at the other ends of the support rods B.

[0057] When the main body part A is under pressure, the biaxial magnetorheological damper regulator provided by the present utility model can cause the two support rods B to rotate simultaneously around the biaxial magnetorheological damper regulator, that is, in fact, cause the two support rods B to rotate simultaneously around the main body part A. As Figure 6 shown, in the above situation, when the angle between the two support rods B increases and the main body part A moves downward, it can still ensure that the upper surface of the main body part A always remains horizontal.

[0058] Therefore, the biaxial body structure of the biaxial magnetorheological damper regulator of the present utility model can meet the usage requirements of some suspension systems.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A dual-axis magnetorheological damping regulator, characterized in that: It comprises a main housing (1), a damping adjustment kit (3) disposed in the main housing (1), and a shaft kit (2) connected to the damping adjustment kit (3) and extending out of the main housing (1); The shaft body kit (2) comprises a first shaft body (201) and a second shaft body (202) sleeved outside the first shaft body (201); the first shaft body (201) is provided with an exposed extension section (201-1) for connecting to an external connecting piece; The main housing (1) comprises a first magnetic conductive end cover (101), a second magnetic conductive end cover (102), and a magnetic conductive connecting ring block (103) connecting the two, and the first magnetic conductive end cover (101) is provided with a shaft outlet; In the damping adjustment kit (3), a second magnetic friction disc (302) and a first magnetic friction disc (301) are arranged in sequence along the axial direction of the first shaft (201) from the extension section (201-1), the second magnetic friction disc (302) is connected to the second shaft (202), and the first magnetic friction disc (301) is connected to the first shaft (201); a coil (303), a permanent magnet ring block (304) and a magnetic isolation ring block (305) are arranged in sequence along the radial direction from the edge of the magnetic connection ring block (103); wherein the magnetic isolation ring block (305) is separated in the main housing (1) to generate a magnetorheological fluid accommodating space, and the second magnetic friction disc (302) and the first magnetic friction disc (301) are both placed in the magnetorheological fluid accommodating space.

2. A dual-axis magnetorheological damping regulator according to claim 1, characterized in that: A magnetic conductive ring block (306) is provided between the second magnetic conductive friction disk (302) and the first magnetic conductive friction disk (301); the inner diameter edge of the magnetic conductive ring block (306) is close to the shaft body kit (2); and the outer diameter edge of the magnetic conductive ring block (306) passes through a limiting opening provided on the magnetic isolation ring block (305) and is connected to the permanent magnetic ring block (304).

3. A dual-axis magnetorheological damping regulator according to claim 2, characterized in that: A sealing separator (307) is provided between the limiting opening and the magnetic conductive ring block (306).

4. A dual-axis magnetorheological damping regulator according to claim 1, characterized in that: A limiting convex portion (102-1) is provided on the second magnetic conductive end cover (102), and an inner cavity of the limiting convex portion (102-1) is used to accommodate and limit the other end of the first shaft (201) away from the extended section (201-1).

5. A dual-axis magnetorheological damping regulator according to claim 4, characterized in that: A limiting ring block (101-1) is arranged on the outer side of the first magnetic conductive end cover (101), and the limiting ring block (101-1) is sleeved outside the second shaft body (202) to limit the shaft body kit (2).

6. A dual-axis magnetorheological damping regulator according to claim 5, characterized in that: Friction reducing elements (4) are provided between the limiting protrusion (102-1) and the first shaft (201), between the limiting ring block (101-1) and the second shaft (202), and between the first shaft (201) and the second shaft (202).

7. A dual-axis magnetorheological damping regulator according to claim 6, characterized in that: The friction reducing element (4) is a ball bearing.

8. The dual-axis magnetorheological damping regulator according to claim 5, characterized in that: A sealing structure (5) is provided between the second shaft body (202) and the shaft outlet, between the first shaft body (201) and the limiting protrusion (102-1), and between the first shaft body (201) and the second shaft body (202).

9. A dual-axis magnetorheological damping regulator according to claim 8, characterized in that: The sealing structure (5) is a sealing ring.

10. A suspension system, characterized in that: Equipped with a dual-axis magnetorheological damping regulator as described in any one of claims 1 to 9.

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