Magnetorheological fluid type damping mechanism

Abstract

The utility model discloses a magnetorheological fluid type damping mechanism which comprises a magnetorheological damper body, a compensation device is arranged at the bottom end of the magnetorheological damper body, a piston rod is arranged at the top end of the magnetorheological damper body, a gland is arranged at the top end of the piston rod, and the gland is connected with the piston rod through a connecting assembly. The outer wall of the piston rod is sleeved with a buffer spring. The device has the beneficial effects that the piston rod and the gland can be quickly disassembled and assembled by arranging the connecting assembly, the replacement efficiency of the buffer spring is improved, the connecting assembly connects and fixes the gland and the piston rod through cooperation of the guide rod, the limiting sliding column, the limiting spring, the mounting block and the limiting groove without bolt fixation, the device is not affected by stamping, and the device is safer and more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of dampers, in particular to a magnetorheological fluid damping mechanism. Background Art

[0002] Magnetorheological damper is a new type of semi-active energy absorber that has emerged in recent years. This type of damper has attracted widespread attention due to its excellent characteristics such as continuous and reversible adjustable damping force, large adjustable range, and fast response speed.

[0003] According to a new magnetorheological damper device disclosed in Chinese patent CN202022859813.X, the application includes a first impact platform, a second impact platform, a piston cylinder and a compensation device; the first impact platform is fixed to the second impact platform by bolts; the second impact platform is connected to the piston cylinder through a piston rod; the compensation device is located below the piston cylinder; the piston cylinder is composed of an outer cylinder, a middle cylinder and an inner cylinder from the outside to the inside; the outer cylinder is a coolant cylinder; the middle cylinder is a magnetorheological fluid cylinder; a piston is fixed in the inner cylinder to form an upper cavity and a lower cavity, and an S-shaped damping channel and a coil are fixed in the piston; a first one-way valve and a second one-way valve are provided on the upper cavity; a third one-way valve and a fourth one-way valve are provided in the lower cavity, and a fifth one-way valve is provided at the upper end of the S-shaped damping channel; the lower end is connected to the lower cavity. The compensation device is equipped with a second spring and is filled with nitrogen. It has a simple structure and can circulate the magnetorheological fluid while achieving a shock-absorbing effect, thereby preventing the magnetorheological fluid from settling. The existing magnetorheological damper device connects the impact platform to the piston rod through bolts to facilitate subsequent replacement of the spring. However, when the impact platform is squeezed by an impact, the bolt will be squeezed. When the impact force is too large, the threads on the piston rod that match the bolt will be squeezed and worn, thereby affecting its service life.

[0004] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0005] In view of the problems in the related art, the present invention proposes a magnetorheological fluid damping mechanism to overcome the above technical problems existing in the existing related art.

[0006] To this end, the specific technical solutions adopted in this utility model are as follows:

[0007] A magnetorheological fluid damping mechanism includes a magnetorheological damper body, a compensation device is provided at the bottom end of the magnetorheological damper body, a piston rod is provided at the top end of the magnetorheological damper body, a pressure cover is provided at the top end of the piston rod, the pressure cover is connected to the piston rod through a connecting assembly, and a buffer spring is provided on the outer wall of the piston rod.

[0008] Preferably, the connecting assembly includes a mounting groove provided at the bottom end of the pressure cover, a mounting block matching the mounting groove provided at the top end of the piston rod, a symmetrically arranged slide groove provided on the inner wall of the mounting groove, a guide rod provided in the slide groove, a limiting slide column extending into the slide groove provided on one side of the guide rod, limiting grooves matching the limiting slide column provided on both sides of the mounting block, and a limiting spring provided on the outer wall of the guide rod.

[0009] Preferably, positioning posts are provided on both sides of the mounting block, and positioning grooves matching the positioning posts are opened on the inner wall of the mounting groove.

[0010] Preferably, adjustment grooves are provided on both sides of the pressure cover, a rotating frame is provided in the adjustment groove, and the guide rod extends from the side of the limiting slide column to the adjustment groove and is connected to the rotating frame through a rotating shaft.

[0011] Preferably, the gland is provided with a guide sliding hole matching the guide rod.

[0012] Preferably, a lifting block is provided at the bottom end of the rotating frame, and a plurality of evenly distributed anti-slip grooves are provided on one side of the lifting block.

[0013] The beneficial effects of the present invention are as follows: by setting up a connecting assembly, the piston rod and the pressure cover can be quickly disassembled and assembled, thereby improving the replacement efficiency of the buffer spring; and the connecting assembly connects and fixes the pressure cover and the piston rod through the guide rod, the limit slide column, the limit spring, the mounting block, and the limit groove, without the need for bolt fixation, and will not be affected by stamping, which is safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the overall structure of a magnetorheological fluid damping mechanism according to an embodiment of the present utility model;

[0016] Figure 2 This is a front view of a magnetorheological fluid damping mechanism according to an embodiment of the present utility model;

[0017] Figure 3 This is a schematic structural diagram of a piston rod in a magnetorheological fluid damping mechanism according to an embodiment of the present utility model;

[0018] Figure 4This is a structural schematic diagram of a gland in a magnetorheological fluid damping mechanism according to an embodiment of the present utility model;

[0019] Figure 5 It is a cross-sectional view of a gland in a magnetorheological fluid damping mechanism according to an embodiment of the present utility model.

[0020] In the picture:

[0021] 1. Magnetorheological damper body; 2. Compensation device; 3. Piston rod; 4. Pressure cover; 5. Buffer spring; 6. Mounting slot; 7. Mounting block; 8. Slide slot; 9. Guide rod; 10. Limiting slide column; 11. Limiting slot; 12. Limiting spring; 13. Positioning column; 14. Positioning slot; 15. Adjusting slot; 16. Rotating frame; 17. Rotating shaft; 18. Lifting block. DETAILED DESCRIPTION

[0022] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0023] According to an embodiment of the present utility model, a magnetorheological fluid damping mechanism is provided.

[0024] Embodiment 1;

[0025] like Figure 1-5 As shown, the magnetorheological fluid damping mechanism according to the embodiment of the utility model includes a magnetorheological damper body 1, a compensation device 2 is provided at the bottom end of the magnetorheological damper body 1, a piston rod 3 is provided at the top end of the magnetorheological damper body 1, a pressure cover 4 is provided at the top end of the piston rod 3, the pressure cover 4 is connected to the piston rod 3 through a connecting assembly, and a buffer spring 5 is provided on the outer wall of the piston rod 3.

[0026] Embodiment 2;

[0027] like Figure 1-5As shown, the magnetorheological damper comprises a main body 1, with a compensation device 2 provided at the bottom end. A piston rod 3 is provided at the top end of the main body 1, and a gland 4 is provided at the top end of the piston rod 3. The gland 4 is connected to the piston rod 3 via a connecting assembly. A buffer spring 5 is sleeved on the outer wall of the piston rod 3. The connecting assembly includes a mounting slot 6 defined at the bottom end of the gland 4, a mounting block 7 that matches the mounting slot 6 at the top end of the piston rod 3, symmetrically arranged slide grooves 8 defined within the inner wall of the mounting slot 6, a guide rod 9 disposed within the slide groove 8, and a stopper 10 extending into the slide groove 8 on one side of the guide rod 9. Stopper slots 11 are defined on both sides of the mounting block 7, matching the stopper 10. A stopper spring 12 is sleeved on the outer wall of the guide rod 9. Positioning posts 13 are defined on both sides of the mounting block 7, and positioning slots 14 are defined on the inner wall of the mounting slot 6, matching the positioner 13. Adjustment slots 15 are defined on both sides of the gland 4. A rotating frame 16 is located within each of these slots. The guide rod 9, located on the side away from the limiting slide 10, extends into the adjustment slots 15 and is connected to the rotating frame 16 via a rotating shaft 17. The gland 4 is provided with guide holes that mate with the guide rod 9. A lifting block 18 is located at the bottom end of the rotating frame 16. Several evenly distributed anti-slip grooves are defined on one side of this lifting block 18.

[0028] In actual application, when the buffer spring 5 is damaged and needs to be replaced, the personnel inserts the finger into the adjusting groove 15 from under the gland 4, and then pushes the lifting block 18 outward, and the lifting block 18 drives the rotating frame 16 to rotate. When the rotating frame 16 rotates to 90 degrees, the rotating frame 16 will be squeezed with the inner wall of the adjusting groove 15 to maintain a fixed state. In this process, when the rotating frame 16 rotates, it will pull the guide rod 9 to slide, and the guide rod 9 drives the limiting slide 10 to disengage from the limiting groove 11 on the mounting block 7. At this time, the gland 4 and the piston rod 3 are released, and the limiting spring 12 is in a compressed state. The personnel removes the gland 4 and then replaces the damaged buffer The spring 5 is removed from the piston rod 3, a new buffer spring 5 is put on, and then the pressure cover 4 is covered on the piston rod 3, so that the mounting block 7 is inserted into the mounting groove 6. The person pushes the lifting block 18 downward to drive the rotating frame 16 to reset, and then the limit spring 12 resets to drive the limit slide 10 to move and insert into the limit groove 11. By setting up a connecting assembly, the piston rod and the pressure cover can be quickly disassembled and assembled, which improves the replacement efficiency of the buffer spring. The connecting assembly connects and fixes the pressure cover and the piston rod through the guide rod, limit slide, limit spring, mounting block, and limit groove. No bolts are required to fix it, and it will not be affected by stamping, which is safer and more reliable.

[0029] To sum up, with the help of the above-mentioned technical solution of the present invention, the piston rod and the pressure cover can be quickly disassembled and assembled by setting a connecting assembly, thereby improving the replacement efficiency of the buffer spring, and the connecting assembly connects and fixes the pressure cover and the piston rod through the guide rod, the limiting slide column, the limiting spring, the mounting block, and the limiting groove without the need for bolt fixation, and will not be affected by stamping, which is safer and more reliable.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A magnetorheological fluid damping mechanism, comprising a magnetorheological damper body (1), characterized in that: The bottom end of the magnetorheological damper body (1) is provided with a compensation device (2), the top end of the magnetorheological damper body (1) is provided with a piston rod (3), the top end of the piston rod (3) is provided with a pressure cover (4), the pressure cover (4) is connected to the piston rod (3) through a connecting assembly, and the outer wall of the piston rod (3) is provided with a buffer spring (5).

2. A magnetorheological fluid damping mechanism according to claim 1, characterized in that: The connecting assembly includes a mounting groove (6) provided at the bottom end of the pressure cover (4), a mounting block (7) matching the mounting groove (6) provided at the top end of the piston rod (3), a symmetrically arranged slide groove (8) provided on the inner wall of the mounting groove (6), a guide rod (9) provided in the slide groove (8), a limiting slide column (10) extending into the slide groove (8) provided on one side of the guide rod (9), limiting grooves (11) matching the limiting slide column (10) provided on both sides of the mounting block (7), and a limiting spring (12) provided on the outer wall of the guide rod (9).

3. The magnetorheological fluid damping mechanism according to claim 2, characterized in that: Positioning columns (13) are provided on both sides of the installation block (7), and positioning grooves (14) matching the positioning columns (13) are provided on the inner wall of the installation groove (6).

4. The magnetorheological fluid damping mechanism according to claim 2, characterized in that: Adjustment grooves (15) are provided on both sides of the pressure cover (4), a rotating frame (16) is provided in the adjustment groove (15), and the guide rod (9) extends from the side of the limit slide (10) to the adjustment groove (15) and is connected to the rotating frame (16) through a rotating shaft (17).

5. The magnetorheological fluid damping mechanism according to claim 4, characterized in that: The pressure cover (4) is provided with a guide sliding hole that matches the guide rod (9).

6. The magnetorheological fluid damping mechanism according to claim 4, characterized in that: A lifting block (18) is provided at the bottom end of the rotating frame (16), and a plurality of evenly distributed anti-slip grooves are provided on one side of the lifting block (18).

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