Multi-cylinder magnetorheological damper

Abstract

The invention relates to the technical field of dampers, and discloses a multi-cylinder magnetorheological damper which comprises a fixing block and is characterized in that four outer cylinder barrels are fixedly connected to the outer wall of the fixing block, piston rods are slidably connected to the interiors of the outer cylinder barrels, and stirring mechanisms are arranged in the outer cylinder barrels; and the stirring mechanism comprises a limiting block, the outer wall of the limiting block is fixedly connected to the interior of the outer cylinder barrel, a stirring groove is formed in the limiting block, a sealing pipe is fixedly connected to the interior of the limiting block, the interior of the sealing pipe is slidably connected to the outer wall of the piston rod, and a stirring plate is fixedly connected to the outer wall of the sealing pipe. Sliding teeth are pushed by a piston rod to reciprocate in a threaded groove, so that a rotating pipe rotates in an outer cylinder barrel, a first rotating block and a sealing pipe are driven to rotate, a stirring plate is driven to move in a stirring groove, magnetorheological fluid is stirred, and the effect of preventing the magnetorheological fluid from precipitating to cause resistance change is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of dampers, in particular to a multi-cylinder magnetorheological damper. Background Art

[0002] Magnetorheological damper is a device that adjusts the damping force based on the change of magnetorheological fluid characteristics. Magnetorheological fluid is an intelligent material that can change its viscosity in response to an external magnetic field. It is widely used in vibration control, automotive suspension systems, building earthquake protection and other fields. Magnetorheological dampers have become an important part of modern damper technology because of their ability to achieve precise damping adjustment, fast response and good adaptability. Existing magnetorheological dampers still have some technical challenges, especially during long-term operation, the performance of magnetorheological fluid may change, resulting in a decrease in damper performance.

[0003] During the use of magnetorheological fluid, due to being in a static or low-speed state for a long time, the ferromagnetic particles in the liquid may precipitate, causing the rheological properties of the liquid to change, thereby affecting the damping effect of the damper. Especially in the low-speed or static state, the viscosity of the magnetorheological fluid may become uneven or precipitate, which may cause the damper to fail in severe cases.

[0004] The viscosity of magnetorheological fluid is very sensitive to temperature. Under high temperature conditions, the viscosity of magnetorheological fluid may drop significantly, resulting in a weakening of the damping effect. Therefore, in the design of magnetorheological dampers, how to effectively control the temperature and avoid the negative impact of temperature increase on the performance of magnetorheological fluid is a key issue.

[0005] Therefore, the present invention provides a multi-cylinder magnetorheological damper Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a multi-cylinder magnetorheological damper, which solves the problems in the prior magnetorheological damper of magnetorheological fluid precipitation and viscosity change caused by temperature increase leading to unstable damping performance.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multi-cylinder magnetorheological damper, comprising a fixed block, characterized in that the outer wall of the fixed block is fixedly connected with four outer cylinders, the interiors of the plurality of outer cylinders are slidably connected with piston rods, and a stirring mechanism is arranged inside the outer cylinders;

[0008] The stirring mechanism includes a limit block, the outer wall of the limit block is fixedly connected to the interior of the outer cylinder, a stirring groove is opened inside the limit block, a sealing tube is fixedly connected to the interior of the limit block, the interior of the sealing tube is slidably connected to the outer wall of the piston rod, the outer wall of the sealing tube is fixedly connected to a stirring plate, the outer wall of the stirring plate is slidably connected to the interior of the stirring groove, and a transmission assembly is provided on the outer wall of the sealing tube.

[0009] Preferably, the transmission assembly includes a first rotating block and a sliding tooth, the interior of the first rotating block is fixedly connected to the outer wall of the sealing tube, the upper surface of the first rotating block is rotatably connected to the lower surface of the limit block, the lower surface of the first rotating block is fixedly connected to a rotating tube, a threaded groove is provided inside the rotating tube, the upper surface of the sliding tooth is fixedly connected to one end of the piston rod, and the outer wall of the sliding tooth is slidably connected to the inside of the threaded groove.

[0010] Preferably, a liquid containing chamber is provided inside the outer cylinder, a piston block is fixedly connected to the outer wall of the piston rod, and the outer wall of the piston block is slidably connected to the inner wall of the liquid containing chamber.

[0011] Preferably, a sealing ring is fixedly connected inside the piston block, an outer wall of the sealing ring is slidably connected to an outer wall of the liquid containing cavity, a flow port is opened inside the piston block, and an electromagnetic coil is fixedly connected inside the piston block.

[0012] Preferably, a connecting plate is fixed to one end of the plurality of piston rods, and a first lifting ear is fixedly connected to an outer wall of the connecting plate.

[0013] Preferably, the outer wall of the fixed block is fixedly connected to a connecting block, the interior of the connecting block is fixedly connected to the outer wall of the outer cylinder, a plurality of cooling grooves are evenly arranged inside the outer cylinder, and the lower surface of the connecting block is fixedly connected to a second lifting ear.

[0014] Preferably, a ventilation slot is provided inside the connection block, and a filter is installed at the bottom end of the ventilation slot of the connection block.

[0015] Preferably, the rotating tube is rotatably connected to the interior of the outer cylinder, a second rotating block is fixedly connected to the lower surface of the rotating tube, and an outer wall of the second rotating block is rotatably connected to the interior of the outer cylinder.

[0016] Preferably, the interior of the second rotating block is fixedly connected to a third rotating block, an air valve is provided inside the third rotating block, and an outer wall of the third rotating block is rotatably connected to the interior of the outer cylinder.

[0017] Preferably, one end of the third rotating block is fixedly connected to a fan, and the fan is arranged inside the ventilation slot.

[0018] The present invention provides a multi-cylinder magnetorheological damper, which has the following beneficial effects:

[0019] 1. The present invention pushes the sliding teeth to reciprocate in the thread groove by the piston rod, so that the rotating tube rotates inside the outer cylinder, thereby driving the first rotating block and the sealing tube to rotate, driving the stirring plate to move in the stirring groove, and then stirring the magnetorheological fluid, thereby achieving the effect of preventing the magnetorheological fluid from settling and causing the resistance to change.

[0020] 2. The present invention drives the second rotating block to rotate inside the outer cylinder by rotating the rotating tube, thereby driving the third rotating block to rotate inside the outer cylinder, thereby driving the fan to rotate, so that air flows inside the ventilation groove and the cooling groove through the fan, and then the outer cylinder is cooled by the flow of air, thereby achieving the effect of preventing the viscosity of the magnetorheological fluid from changing due to temperature rise. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the present invention;

[0022] Figure 2 It is a cross-sectional view of the outer cylinder of the present invention;

[0023] Figure 3 It is a schematic diagram of the piston rod of the present invention;

[0024] Figure 4 is a cross-sectional view of a piston block of the present invention;

[0025] Figure 5 It is a cross-sectional view of the rotating tube of the present invention;

[0026] Figure 6 It is a cross-sectional view of the connection block of the present invention.

[0027] Among them, 1. the first lifting ear; 2. the connecting plate; 3. the piston rod; 4. the outer cylinder; 5. the fixing block; 6. the connecting block; 7. the second lifting ear; 8. the piston block; 9. the cooling groove; 10. the limiting block; 11. the rotating tube; 12. the liquid containing chamber; 13. the flow port; 14. the sealing ring; 15. the sliding teeth; 16. the electromagnetic coil; 17. the stirring plate; 18. the sealing tube; 19. the first rotating block; 20. the threaded groove; 21. the second rotating block; 22. the air valve; 23. the third rotating block; 24. the stirring groove; 25. the ventilation groove; 26. the filter; 27. the fan. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Please see attached Figure 1 -Attached Figure 6 The embodiment of the present invention provides a multi-cylinder magnetorheological damper, comprising a fixed block 5, the outer wall of the fixed block 5 is fixedly connected with four outer cylinders 4, the interiors of the multiple outer cylinders 4 are slidably connected with piston rods 3, and the interiors of the outer cylinders 4 are provided with a stirring mechanism;

[0030] The stirring mechanism includes a limit block 10, the outer wall of the limit block 10 is fixedly connected to the inside of the outer cylinder 4, a stirring groove 24 is opened inside the limit block 10, a sealing tube 18 is fixedly connected to the inside of the limit block 10, the inside of the sealing tube 18 is slidably connected to the outer wall of the piston rod 3, the outer wall of the sealing tube 18 is fixedly connected to the stirring plate 17, the outer wall of the stirring plate 17 is slidably connected to the inside of the stirring groove 24, and the outer wall of the sealing tube 18 is provided with a transmission assembly; the transmission assembly includes a first rotating block 19 and a sliding tooth 15, the inside of the first rotating block 19 is fixedly connected to the outer wall of the sealing tube 18, the upper surface of the first rotating block 19 is rotatably connected to the lower surface of the limit block 10, the lower surface of the first rotating block 19 is fixedly connected to the rotating tube 11, the inside of the rotating tube 11 is opened with a threaded groove 20, the upper surface of the sliding tooth 15 is fixedly connected to one end of the piston rod 3, and the outer wall of the sliding tooth 15 is slidably connected to the inside of the threaded groove 20;

[0031] Specifically, the piston rod 3 slides inside the outer cylinder 4, so that the piston rod 3 slides in the sealing tube 18, so that the piston rod 3 pushes the sliding teeth 15 to move, and the sliding teeth 15 slide in the thread groove 20, so that the rotating tube 11 rotates, and at the same time drives the first rotating block 19 to rotate in the outer cylinder 4, and drives the sealing tube 18 to rotate, and then drives the stirring plate 17 to move through the rotation of the sealing tube 18, so that the stirring plate 17 moves in the stirring tank 24, and then stirs the magnetorheological fluid, thereby preventing the magnetorheological fluid from being affected by precipitation.

[0032] A liquid containing chamber 12 is provided inside the outer cylinder 4, a piston block 8 is fixedly connected to the outer wall of the piston rod 3, and the outer wall of the piston block 8 is slidably connected to the inner wall of the liquid containing chamber 12; a sealing ring 14 is fixedly connected to the inner wall of the piston block 8, and the outer wall of the sealing ring 14 is slidably connected to the outer wall of the liquid containing chamber 12; a flow port 13 is provided inside the piston block 8, and an electromagnetic coil 16 is fixedly connected to the inner wall of the piston block 8;

[0033] Specifically, the movement of the piston rod 3 drives the piston block 8 to slide inside the liquid chamber 12, so that the magnetorheological fluid in the liquid chamber 12 flows in the flow port 13, and then the viscosity of the magnetorheological fluid flowing in the flow port 13 is changed by starting the electromagnetic coil 16, thereby changing the resistance, and the sealing ring 14 is driven by the piston block 8 to slide in the liquid chamber 12, thereby achieving a sealing effect.

[0034] A connecting plate 2 is fixed to one end of the plurality of piston rods 3, and a first lifting lug 1 is fixedly connected to the outer wall of the connecting plate 2;

[0035] Specifically, the movement of the first lifting ear 1 drives the connecting plate 2 to move, and then the movement of the connecting plate 2 drives the multiple piston rods 3 to move, so that the piston rods 3 slide inside the outer cylinder 4 .

[0036] A ventilation slot 25 is provided inside the connecting block 6, and a filter screen 26 is installed at the bottom end of the ventilation slot 25 of the connecting block 6; the rotating tube 11 is rotatably connected to the inside of the outer cylinder 4, and a second rotating block 21 is fixedly connected to the lower surface of the rotating tube 11, and the outer wall of the second rotating block 21 is rotatably connected to the inside of the outer cylinder 4; a third rotating block 23 is fixedly connected to the inside of the second rotating block 21, and an air valve 22 is provided inside the third rotating block 23, and the outer wall of the third rotating block 23 is rotatably connected to the inside of the outer cylinder 4; a fan 27 is fixedly connected to one end of the third rotating block 23, and the fan 27 is arranged inside the ventilation slot 25;

[0037] Specifically, the rotation of the rotating tube 11 drives the second rotating block 21 to rotate, so that the second rotating block 21 rotates inside the outer cylinder 4, and then drives the third rotating block 23 to rotate inside the outer cylinder 4, and then drives the fan 27 to rotate through the rotation of the third rotating block 23, and then drives the fan 27 to rotate in the ventilation groove 25, so that the air flows inside the cooling groove 9, thereby achieving the effect of cooling the outer cylinder 4, and the internal pressure can be adjusted through 22.

[0038] Working principle: First, the connecting plate 2 is driven to move through the first lifting ear 1, and then the piston rod 3 is made to slide inside the outer cylinder 4 through the movement of the connecting plate 2, and then the piston block 8 is driven to slide in the liquid chamber 12, and then the magnetorheological fluid flows in the flow port 13, and then the viscosity of the magnetorheological fluid entering the flow port 13 is changed by starting the electromagnetic coil 16, thereby changing the resistance, and the piston rod 3 slides in the sealing tube 18, thereby pushing the sliding tooth 15 to move, and then the sliding tooth 15 reciprocates inside the thread groove 20, so that the rotating tube 11 is rotated, thereby driving the first rotating block 19 to rotate in the outer cylinder 4. The sealing tube 18 is rotated internally through the rotation of the first rotating block 19, so that the stirring plate 17 rotates inside the stirring groove 24, so that the stirring plate 17 stirs the magnetorheological fluid inside, thereby preventing the magnetorheological fluid from settling inside, and the second rotating block 21 is driven to rotate inside the outer cylinder 4 through the rotation of the rotating tube 11, thereby driving the third rotating block 23 to rotate inside the outer cylinder 4, and then driving the fan 27 to rotate, so that the fan 27 rotates in the ventilation groove 25, and then the air flows in the cooling groove 9 and the ventilation groove 25, thereby achieving the effect of cooling the outer cylinder 4, thereby preventing the temperature rise from affecting the viscosity of the internal magnetorheological fluid.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-cylinder magnetorheological damper, comprising a fixing block (5), characterized in that: Four outer cylinders (4) are fixedly connected to the outer wall of the fixed block (5), piston rods (3) are slidably connected inside the plurality of outer cylinders (4), and a stirring mechanism is arranged inside the outer cylinders (4); The stirring mechanism comprises a limit block (10), the outer wall of the limit block (10) is fixedly connected to the inside of the outer cylinder (4), a stirring groove (24) is provided inside the limit block (10), a sealing tube (18) is fixedly connected to the inside of the limit block (10), the inside of the sealing tube (18) is slidably connected to the outer wall of the piston rod (3), the outer wall of the sealing tube (18) is fixedly connected to a stirring plate (17), the outer wall of the stirring plate (17) is slidably connected to the inside of the stirring groove (24), and a transmission component is provided on the outer wall of the sealing tube (18).

2. A multi-cylinder magnetorheological damper according to claim 1, characterized in that: The transmission assembly comprises a first rotating block (19) and a sliding tooth (15); the interior of the first rotating block (19) is fixedly connected to the outer wall of the sealing tube (18); the upper surface of the first rotating block (19) is rotatably connected to the lower surface of the limit block (10); the lower surface of the first rotating block (19) is fixedly connected to a rotating tube (11); a thread groove (20) is provided inside the rotating tube (11); the upper surface of the sliding tooth (15) is fixedly connected to one end of the piston rod (3); and the outer wall of the sliding tooth (15) is slidably connected to the inside of the thread groove (20).

3. A multi-cylinder magnetorheological damper according to claim 1, characterized in that: The outer cylinder (4) is provided with a liquid containing chamber (12), the outer wall of the piston rod (3) is fixedly connected to a piston block (8), and the outer wall of the piston block (8) is slidably connected to the inner wall of the liquid containing chamber (12).

4. A multi-cylinder magnetorheological damper according to claim 3, characterized in that: A sealing ring (14) is fixedly connected to the interior of the piston block (8), and the outer wall of the sealing ring (14) is slidably connected to the outer wall of the liquid chamber (12). A flow port (13) is provided inside the piston block (8), and an electromagnetic coil (16) is fixedly connected to the interior of the piston block (8).

5. The multi-cylinder magnetorheological damper according to claim 1, characterized in that: A connecting plate (2) is fixed to one end of the plurality of piston rods (3), and a first lifting ear (1) is fixedly connected to the outer wall of the connecting plate (2).

6. A multi-cylinder magnetorheological damper according to claim 1, characterized in that: The outer wall of the fixed block (5) is fixedly connected to a connecting block (6), the interior of the connecting block (6) is fixedly connected to the outer wall of the outer cylinder (4), a plurality of cooling grooves (9) are evenly arranged inside the outer cylinder (4), and the lower surface of the connecting block (6) is fixedly connected to a second lifting ear (7).

7. A multi-cylinder magnetorheological damper according to claim 6, characterized in that: A ventilation slot (25) is provided inside the connection block (6), and a filter screen (26) is installed at the bottom end of the ventilation slot (25) of the connection block (6).

8. The multi-cylinder magnetorheological damper according to claim 2, characterized in that: The rotating tube (11) is rotatably connected to the interior of the outer cylinder (4); a second rotating block (21) is fixedly connected to the lower surface of the rotating tube (11); and an outer wall of the second rotating block (21) is rotatably connected to the interior of the outer cylinder (4).

9. A multi-cylinder magnetorheological damper according to claim 8, characterized in that: The interior of the second rotating block (21) is fixedly connected to a third rotating block (23), an air valve (22) is provided inside the third rotating block (23), and the outer wall of the third rotating block (23) is rotatably connected to the interior of the outer cylinder (4).

10. A multi-cylinder magnetorheological damper according to claim 9, characterized in that: One end of the third rotating block (23) is fixedly connected to a fan (27), and the fan (27) is arranged inside the ventilation slot (25).

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