CN211624061U

CN211624061U - Magneto-rheological damper

Info

Publication number: CN211624061U
Application number: CN201922016665.2U
Authority: CN
Inventors: 罗峰
Original assignee: Ningbo Jichun Auto Parts Co ltd
Current assignee: Ningbo Jichun Auto Parts Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-10-02
Anticipated expiration: 2029-11-21

Abstract

The utility model provides a magneto-rheological damper, which comprises an oil storage cylinder assembly with openings at two ends, a working cylinder body arranged inside the oil storage cylinder assembly, a piston valve assembly arranged inside the working cylinder body, a piston rod matched and connected with the piston valve assembly, a magneto-rheological component arranged outside the oil storage cylinder assembly, a dust cover component arranged on the magneto-rheological component, an upper supporting buffer block matched and fixed with the dust cover component, a lower supporting buffer block arranged outside the oil storage cylinder assembly and an elastic component; one end of the elastic piece is fixed in the upper supporting buffer block, and the other end of the elastic piece is fixed in the lower supporting buffer block; the magnetorheological component comprises a magnetorheological cylinder body and an electromagnetic coil arranged on the outer side of the magnetorheological cylinder body in a surrounding manner, and a floating piston assembly and magnetorheological oil for pushing the floating piston assembly to move are arranged in the magnetorheological cylinder body; the magnetorheological oil liquid is changed into a viscoplastic body with damping force from liquid with strong fluidity under the action of a magnetic field of the electromagnetic coil.

Description

Magneto-rheological damper

Technical Field

The utility model relates to a shock absorber technical field, concretely relates to magneto rheological shock absorber.

Background

The traditional adjustable damping shock absorber in the market at present mainly realizes damping force adjustment through adjusting the aperture of a throttling opening, and generally has 2 realization modes: firstly, a stepping motor is adopted to adjust a throttling port arranged in a piston; secondly, an intermediate cylinder and an electromagnetic valve are added on the basis of the original double-cylinder shock absorber; the traditional adjustable damping shock absorber needs a relatively complex electromechanical device or hydraulic system, has a complex structure and low cost, and is difficult to popularize in common vehicle types.

Disclosure of Invention

Technical problem to be solved

In order to overcome the defects of the prior art, the magneto-rheological shock absorber is provided, and the problems that the traditional adjustable damping shock absorber needs a relatively complex electromechanical device or a hydraulic system, has a complex structure and low cost, and is difficult to popularize in common vehicle types are solved.

(II) technical scheme

The utility model discloses a following technical scheme realizes: the utility model provides a magneto-rheological damper, which comprises an oil storage cylinder assembly with openings at two ends, a working cylinder body arranged inside the oil storage cylinder assembly, a piston valve assembly arranged inside the working cylinder body, a piston rod matched and connected with the piston valve assembly, a magneto-rheological component arranged outside the oil storage cylinder assembly, a dust cover component arranged on the magneto-rheological component, an upper supporting buffer block matched and fixed with the dust cover component, a lower supporting buffer block arranged outside the oil storage cylinder assembly and an elastic component; one end of the elastic piece is fixed in the upper supporting buffer block, and the other end of the elastic piece is fixed in the lower supporting buffer block; the magnetorheological component comprises a magnetorheological cylinder body and an electromagnetic coil arranged on the outer side of the magnetorheological cylinder body in a surrounding manner, and a floating piston assembly and magnetorheological oil for pushing the floating piston assembly to move are arranged in the magnetorheological cylinder body; the magnetorheological oil liquid is changed into a viscoplastic body with damping force from liquid with strong fluidity under the action of a magnetic field of the electromagnetic coil.

Preferably, the dust cover assembly comprises a first dust cover and a rubber dust cover, and the first dust cover and the rubber dust cover are matched and fixed together at the opening of the magnetorheological cylinder.

Preferably, a first locking assembly is arranged at the matching position of the piston rod and the supporting buffer block; the first locking assembly comprises a first locking nut and a first compression gasket, and the first locking nut is fixed on the piston rod through the first compression gasket in a threaded manner.

Preferably, the elastic part is an outer spiral large spring, and a spring buffer cushion is arranged at the matching position of the outer spiral large spring and the supporting buffer block.

Preferably, the floating piston assembly is provided with a piston ring in a matching way.

Preferably, the oil storage cylinder assembly is connected with the magnetorheological cylinder body in a matching way through a connecting sleeve assembly, and a plastic piston rod dust cover is further arranged at the matching position of the oil storage cylinder assembly.

Preferably, still include oil blanket direction assembly, the piston valve assembly passes through oil blanket direction assembly and is connected with the actuating lever cooperation, actuating lever and oil blanket direction assembly cooperation department are provided with the piston rod dust cover, piston valve assembly and oil blanket direction assembly cooperation department still are provided with magnetism proof pad and with magnetism proof pad matched with jump ring.

Preferably, the piston rod buffer block is sleeved on the driving rod, a second locking assembly is arranged at one end of the piston rod buffer block, and the second locking assembly comprises a second locking nut and a second compression gasket.

Preferably, the connector is matched and connected with the driving rod through a rotating rod, and the rotating rod) is provided with a sheath.

Preferably, the oil storage cylinder assembly further comprises a sealing cover which is arranged at the opening of the oil storage cylinder assembly in a matching mode.

By adopting the technical scheme, the novel intelligent magnetorheological fluid material can generate an obvious magnetorheological effect under the action of an external magnetic field, the yield stress and the apparent viscosity of the fluid have 2-3 orders of magnitude change and are similar to the properties of a solid, when the action of the external magnetic field is removed, the fluid recovers the original flowing properties, namely, the rapid and reversible conversion is carried out between the liquid state and the solid state, the conversion is completed within millisecond order of time, the magnetorheological fluid is filled in the magnetorheological cylinder body, the electromagnetic coil is arranged, the magnetorheological fluid can be changed into a viscoplastic body from liquid with strong fluidity under the action of the magnetic field, and the change is controllable, rapid and reversible, so that the damping force with rapid response and strong controllability is generated under the conditions that an electromechanical control valve is not used and a mechanical device is simple.

Drawings

FIG. 1 is a schematic view of a magnetorheological damper according to the present invention in a partial cross-sectional view;

fig. 2 is a schematic sectional view in the direction of a-a in fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1-2, the present invention provides a magnetorheological damper, which comprises an oil storage cylinder assembly 20 with two open ends, a working cylinder 27 disposed inside the oil storage cylinder assembly 20, a piston valve assembly 15 disposed inside the working cylinder 27, a piston rod 8 cooperatively connected with the piston valve assembly 15, a magnetorheological component disposed outside the oil storage cylinder assembly 20, a dust cover component disposed on the magnetorheological component, an upper support buffer block 3 cooperatively fixed with the dust cover component, a lower support buffer block 14 disposed outside the oil storage cylinder assembly 20, and an elastic component 5; one end of the elastic piece 5 is fixed in the upper supporting buffer block 3, and the other end is fixed in the lower supporting buffer block 14; the magnetorheological component 28 comprises a magnetorheological cylinder 281, an electromagnetic coil 282 surrounding the magnetorheological cylinder 281, and a floating piston assembly 10 and magnetorheological oil liquid 11 pushing the floating piston assembly 10 to displace are arranged in the magnetorheological cylinder 281; the magnetorheological oil liquid 11 is changed from liquid with strong fluidity into a viscoplastic body with damping force under the action of the magnetic field of the electromagnetic coil 282; wherein, the floating piston assembly 10 is provided with a piston ring 9 in a matching way, and further comprises a connector 26, the connector 26 is connected with a driving rod 30 in a matching way through a rotating rod 31, the rotating rod 31 is provided with a sheath 25, and further comprises a sealing cover 24, the sealing cover 24 is arranged at an opening of an oil storage cylinder assembly 20 in a matching way, the novel intelligent material of the magnetorheological fluid 11 can generate obvious magnetorheological effect under the action of an external magnetic field, the yield stress and the apparent viscosity of the fluid have 2-3 orders of magnitude changes, and the fluid is similar to solid, when the action of the external magnetic field is removed, the fluid recovers the original flowing property, namely, the rapid and reversible conversion is carried out between liquid and solid, the conversion is completed within millisecond time, the magnetorheological fluid is filled in the magnetorheological cylinder 281, and an electromagnetic coil is arranged, the magnetorheological fluid 11 can be changed into a viscoplastic body from liquid with strong fluidity under the action of the magnetic field, and the change is controllable, rapid and reversible, so that the damping force with rapid response and strong controllability is generated under the condition that an electromechanical control valve is not arranged and the mechanical device is simple.

As shown in fig. 1-2, the utility model provides a magneto rheological damper, the dust cover subassembly includes first dust cover 6 and rubber dust cover 7, first dust cover 6 and the cooperation of rubber dust cover 7 are fixed together at the opening part of magneto rheological barrel 281, and foretell first dust cover 6 and rubber dust cover 7 all are used for dustproof operation, and multistage dustproof measure like this prevents that outside small dust particle from getting into the inside oil circuit that leads to of magneto rheological damper and blockking up, and the condition that work is not smooth and easy takes place.

As shown in fig. 1-2, the present invention provides a magnetorheological damper, wherein a first locking assembly (not shown) is disposed at a position where a piston rod 8 is engaged with a supporting buffer block 3; the first locking assembly (not marked in the figure) comprises a first locking nut 1 and a first compression gasket 2, the first locking nut 1 is fixed on the piston rod 9 through the first compression gasket 2 in a threaded manner, wherein the first locking assembly (not marked in the figure) mainly plays a locking role and tightly fixes the piston rod 8 and the support buffer block 3 together.

As shown in fig. 1-2, the utility model provides a magnetorheological damper, elastic component 5 is outer spiral big spring, outer spiral big spring is provided with spring cushion 4 with supporting buffer block 3 cooperation department, adopts the elastic component 5 of outer spiral big spring, mainly is according to the shape and the characteristic of outer spiral big spring, can adapt to in this device, in addition just utilizes spring cushion 4's effect, and in use, the effectual spring action that has reduced has better shock attenuation effect.

As shown in fig. 1-2, the utility model provides a magneto rheological damper, oil storage cylinder assembly 20 passes through adapter sleeve assembly 13 and is connected with magneto rheological barrel 281 cooperation, its cooperation department still is provided with plastics piston rod dust cover 12, in the above-mentioned scheme, through adapter sleeve assembly 13's setting, can solve the relation of connection between oil storage cylinder assembly 20 and the magneto rheological barrel 281, owing to be connected through adapter sleeve assembly 13, both ends junction probably will produce the clearance, consequently, increase the inside oil circuit that leads to of the effectual small dust particle who has stopped outside of plastics piston rod dust cover 12 entering magneto rheological damper and blockked up, the unsmooth condition of work takes place to lead to the oil circuit to block up, work takes place

As shown in fig. 1-2, the utility model provides a magneto rheological damper still includes oil blanket direction assembly 18, piston valve assembly 15 is connected with the cooperation of actuating lever 30 through oil blanket direction assembly 18, actuating lever 30 is provided with piston rod dust cover 19 with oil blanket direction assembly 18 cooperation department, piston valve assembly 15 and oil blanket direction assembly 18 cooperation department still are provided with magnetic isolation pad 16 and with magnetic isolation pad 16 matched with jump ring 17, among the above-mentioned technical scheme, can let piston rod 8 carry out piston motion according to the route of reality through oil blanket direction assembly 18, the condition emergence of deviation can not appear, has increased a magnetic isolation pad 16 in addition, and the effectual unnecessary magnetic induction phenomenon that prevents takes place, leads to the problem.

As shown in fig. 1-2, the utility model provides a magnetorheological damper, still include piston rod buffer block 21, piston rod buffer block 21 cup joints and sets up on actuating lever 30, the one end of piston rod buffer block 21 is provided with second locking Assembly (not sign in the figure), second locking Assembly (not sign in the figure) includes second lock nut 22 and second pressure washer 23, wherein, second locking Assembly (not sign in the figure) mainly plays locking effect, fixes piston rod buffer block 21 and actuating lever 30 together tightly.

The utility model provides a magneto-rheological damper, wherein the magneto-rheological oil liquid 11 is a novel intelligent material which can generate obvious magneto-rheological effect under the action of an external magnetic field, the yield stress and the apparent viscosity of the fluid have 2 to 3 orders of magnitude changes and are represented as properties similar to solid, and when the action of the external magnetic field is removed, the fluid recovers the original flowing properties, i.e. a fast, reversible transition between liquid and solid state, and this transition is done in a time of the order of milliseconds, the magnetorheological fluid is filled in the magnetorheological cylinder 281, and the electromagnetic coil is arranged, the magnetorheological fluid 11 can be changed into a viscoplastomer from a liquid with strong fluidity under the action of a magnetic field, and the change is controllable, rapid and reversible, therefore, the damping force with quick response and strong controllability is generated under the conditions of no electromechanical control valve and simple mechanical device.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.

Claims

1. A magneto-rheological shock absorber comprises an oil storage cylinder assembly (20) with openings at two ends, a working cylinder body (27) arranged inside the oil storage cylinder assembly (20), a piston valve assembly (15) arranged inside the working cylinder body (27), a piston rod (8) in fit connection with the piston valve assembly (15), a magneto-rheological component arranged outside the oil storage cylinder assembly (20), a dust cover assembly arranged on the magneto-rheological component, an upper supporting buffer block (3) in fit fixation with the dust cover assembly, a lower supporting buffer block (14) arranged outside the oil storage cylinder assembly (20), and an elastic part (5); one end of the elastic piece (5) is fixed in the upper supporting buffer block (3), and the other end of the elastic piece is fixed in the lower supporting buffer block (14); the method is characterized in that: the magnetorheological component (28) comprises a magnetorheological cylinder (281) and an electromagnetic coil (282) arranged on the outer side of the magnetorheological cylinder (281) in a surrounding manner, wherein a floating piston assembly (10) and magnetorheological oil (11) for pushing the floating piston assembly (10) to move are arranged in the magnetorheological cylinder (281); the magnetorheological oil (11) is changed from liquid with strong fluidity into a viscoplastic body with damping force under the action of a magnetic field of the electromagnetic coil (282).

2. A magnetorheological damper, according to claim 1, wherein: the dust cover assembly comprises a first dust cover (6) and a rubber dust cover (7), and the first dust cover (6) and the rubber dust cover (7) are matched and fixed together at an opening of the magnetorheological cylinder body (281).

3. A magnetorheological damper, according to claim 2, wherein: a first locking assembly is arranged at the matching position of the piston rod (8) and the supporting buffer block (3); the first locking assembly comprises a first locking nut (1) and a first compression gasket (2), and the first locking nut (1) is fixed on the piston rod (8) through the first compression gasket (2) in a threaded mode.

4. A magnetorheological damper, according to claim 3, wherein: the elastic piece (5) is an outer spiral large spring, and a spring buffer pad (4) is arranged at the matching position of the outer spiral large spring and the supporting buffer block (3).

5. A magnetorheological damper, according to claim 1, wherein: and the floating piston assembly (10) is provided with a piston ring (9) in a matching way.

6. A magnetorheological damper, according to claim 1, wherein: the oil storage cylinder assembly (20) is connected with the magneto-rheological cylinder body (281) in a matching way through a connecting sleeve assembly (13), and a plastic piston rod dust cover (12) is further arranged at the matching position.

7. A magnetorheological damper, according to claim 1, wherein: still include oil blanket direction assembly (18), piston valve assembly (15) are connected with actuating lever (30) cooperation through oil blanket direction assembly (18), actuating lever (30) are provided with piston rod dust cover (19) with oil blanket direction assembly (18) cooperation department, piston valve assembly (15) and oil blanket direction assembly (18) cooperation department still are provided with magnetic isolation pad (16) and with magnetic isolation pad (16) matched with jump ring (17).

8. A magnetorheological damper, according to claim 1, wherein: still include piston rod buffer block (21), piston rod buffer block (21) cup joint the setting on actuating lever (30), the one end of piston rod buffer block (21) is provided with second locking Assembly, second locking Assembly includes second lock nut (22) and second pressure washer (23).

9. A magnetorheological damper, according to claim 1, wherein: still include connector (26), connector (26) pass through rotary rod (31) and are connected with actuating lever (30) cooperation, be provided with sheath (25) on rotary rod (31).

10. A magnetorheological damper, according to claim 1, wherein: the oil storage cylinder assembly further comprises a sealing cover (24), and the sealing cover (24) is arranged at the opening of the oil storage cylinder assembly (20) in a matching mode.