CN210661180U - Cab suspension air spring integrated with magnetorheological shock absorber - Google Patents

Abstract

The utility model discloses an integrated magneto rheological damper's driver's cabin suspension air spring, including half assembly of air spring and magneto rheological damper, half assembly of air spring includes the left end lid, left side buckle, the gasbag, right side buckle and piston, magneto rheological damper includes the shock absorber body, the piston rod, the director, sealed the pad, magneto rheological fluid, floating piston, sealed air chamber, coil and line valve, the director is installed at shock absorber body up end with sealed the pad, the space part between floating piston and the shock absorber body is sealed air chamber, magneto rheological fluid is full of sealed pad and floating piston between, the tip at the piston rod is installed to coil and line valve, be provided with the opening on the line valve. The magnetic field is controlled to change by changing the current of the coil, so that the viscosity and the fluidity of the magnetorheological fluid are changed, the damping force is changed, the structure is simple, a valve is not needed, the continuous damping effect is excellent, the real-time accurate control is realized, the piston rod and the shock absorber body are ensured to be the same axis, the leakage is prevented, and the maintenance is convenient.

Description

Cab suspension air spring integrated with magnetorheological shock absorber

Technical Field

The utility model belongs to the technical field of air spring product for the damping, especially, relate to a driver's cabin suspension air spring of integrated magneto rheological shock absorber.

Background

In modern automotive construction, cab suspension is an indispensable system, and cab suspension air springs are important force-transmitting and force-generating components of cab suspension systems. The traditional air spring shock absorber for the cab is passive, the damping is not adjustable, the shock absorber cannot adapt to the vehicle speed and road condition change in a large range, the shock absorption effect on a bumpy road surface is poor, the riding comfort of the vehicle is poor, and the control stability is poor.

In recent years, with the development and progress of the automobile industry, the existing cab suspension air spring also has breakthrough progress on the aspect of a shock absorber, and magnetorheological fluid is widely used for the research and development and the use of adjustable shock absorbers. The structure of the traditional magneto-rheological shock absorber is complex, the manufacturing cost is high, a small valve structure is mostly adopted for the asymmetric problem of the pull-up and pressure damping force of a vehicle, the structure cannot be accurately controlled in real time, the traditional magneto-rheological shock absorber achieves the shock absorption effect through the flow resistance of liquid, stagnation can occur if the pressure is insufficient, and the damping effect is not well exerted. The existing magneto-rheological damper is easy to cause the piston rod and the damper body to deviate from the same axis in the reciprocating motion process, so that the installation deformation of a sealing ring is caused, the leakage is caused, and the sealing performance of the magneto-rheological damper cannot be well ensured due to long-term use. In addition, the magnetorheological damper and the cab suspension air spring are designed to be coaxially integrated, so that although the installation space is reduced, the later maintenance is difficult, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the not enough that exists to above-mentioned prior art, provide a driver's cabin suspension air spring of integrated magnetic current becomes shock absorber, it has simple structure, need not to use the valve, can real-time accurate control, continuous damping is effectual, guarantee that piston rod and shock absorber body be same axis, prevent sealed leakage and later maintenance convenient characteristics.

In order to achieve the above object, the utility model adopts the following technical scheme: a driver cab suspension air spring integrated with a magneto-rheological shock absorber comprises an air spring half assembly and the magneto-rheological shock absorber, wherein the air spring half assembly comprises a left end cover, a left retaining ring, an air bag, a right retaining ring and a piston, the left end cover is installed at the left end opening of the air bag, the piston is installed at the right end opening of the air bag, the left retaining ring is sleeved on the periphery of the left end cover, the right retaining ring is sleeved on the periphery of the end part of the piston, the left end cover is connected with a piston rod, a sealing ring I is embedded in a hole of the left end cover, a sealing ring II is embedded in a hole of the piston, the magneto-rheological shock absorber comprises a shock absorber body, a piston rod, a guider, a sealing gasket, magneto-rheological fluid, a floating piston, a sealing air chamber, a coil and a wire valve, the piston is connected with the shock absorber body, the magnetorheological fluid is filled between the sealing gasket and the floating piston, the coil and the linear valve are installed at the end part of the piston rod, a circulation hole is formed in the linear valve, and a sealing ring III is installed between the floating piston and the shock absorber body.

Preferably, the right retaining ring and the piston are detachably buckled and assembled into a whole, and the end part of the piston is provided with a barb structure.

Preferably, the piston is provided with a quick-connection plug, and one end of the quick-connection plug is connected with an air source.

Preferably, the number of the sealing rings I and II is 2.

Preferably, the seal ring I, the seal ring II and the seal ring III are made of HNBR (hydrogenated nitrile butadiene rubber).

Preferably, the two end parts of the damper body are respectively provided with a left lifting lug and a right lifting lug.

Preferably, the coil is an enameled wire, and the diameter of the enameled wire is 0.45 mm.

Preferably, the gaps of the coil are coated with oil-resistant insulating glue.

After the structure is adopted, compared with the prior art, the utility model the advantage that has is: the utility model has the advantages of simple and reasonable structure, be full of gas in air spring half assembly the inside, play the effect of bearing weight of and buffering vibration, because magnetorheological suspensions are full of between sealed pad and floating piston, low viscous characteristic can appear in this magnetorheological suspensions under the zero magnetic field condition, and can demonstrate high viscosity and low mobility under the strong magnetic field effect, can produce magnetic field through the coil, be provided with the opening on the line valve, magnetorheological suspensions passes through fixed line valve under the pressure effect, the direction that magnetorheological suspensions flows is perpendicular with the magnetic pole direction, the change in the electric current control magnetic field of accessible change coil, make magnetorheological suspensions's viscosity and mobility change, thereby make the damping force of shock absorber change, this kind of structure is comparatively simple, need not to use specially designed valve, the continuous damping effect is good, and can real-time accurate control; by means of the guide device, when the magnetorheological fluid flows, the piston rod and the shock absorber body can be ensured to be in the same axis, and sealing leakage is prevented; in addition, the piston is detachable to be buckled and pressed by the right retaining ring and is assembled into a whole, so that the disassembly and the assembly are convenient, and the later maintenance is very convenient.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

in the figure: 10. a left end cap; 11. a left retaining ring; 12. an air bag; 13. a right retaining ring; 14. a piston; 15. A seal ring I; 16. a seal ring II; 17. a shock absorber body; 18. a piston rod; 19. a guide; 20. A gasket; 21. magnetorheological fluid; 22. a floating piston; 23. sealing the air chamber; 24. a coil; 25. a line valve; 26. a flow-through hole; 27. a seal ring III; 28. a quick connector; 29. a left lifting lug; 30. and a right lifting lug.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a cab suspension air spring integrated with a magnetorheological damper comprises an air spring half assembly and the magnetorheological damper, wherein the air spring half assembly comprises a left end cover 10, a left retaining ring 11, an air bag 12, a right retaining ring 13 and a piston 14, the left end cover 10 is installed at the left port of the air bag 12, the piston 14 is installed at the right port of the air bag 12, the left retaining ring 11 is sleeved at the periphery of the left end cover 10, the right retaining ring 13 is sleeved at the periphery of the end part of the piston 14, the left end cover 10 is connected with a piston rod 18, a sealing ring I15 is embedded in a hole of the left end cover 10, a sealing ring II16 is embedded in a hole of the piston 14, the magnetorheological damper comprises a damper body 17, a piston rod 18, a guider 19, a sealing gasket 20, a magnetorheological damper body 17, a floating piston 22, a sealing air chamber 23, a coil 24 and a line valve 25, the gap part between the floating piston 22 and the shock absorber body 17 is a sealed air chamber 23, the magnetorheological fluid 21 is filled between the sealing gasket 20 and the floating piston 22, the coil 24 and the wire valve 25 are arranged at the end part of the piston rod 18, the wire valve 25 is provided with a through hole 26, and a sealing ring III27 is arranged between the floating piston 22 and the shock absorber body 17.

In the embodiment, the structure is simple and reasonable, the air spring half assembly is filled with air to play the roles of bearing mass and buffering vibration, the magnetorheological fluid 21 is filled between the sealing gasket 20 and the floating piston 22, the magnetorheological fluid 21 has the characteristic of low viscosity under the condition of zero magnetic field, and has high viscosity and low fluidity under the action of strong magnetic field, and real-time response is made to road conditions and driving environment by utilizing electromagnetic reaction based on the input information of the sensor for monitoring the motion of the vehicle body and the vehicle wheel. The magnetic field can be generated through the coil 24, the circulation hole 26 is arranged on the linear valve 25, the magnetorheological fluid 21 passes through the fixed linear valve 25 under the action of pressure, the flowing direction of the magnetorheological fluid 21 is vertical to the direction of the magnetic pole, the change of the magnetic field can be controlled by changing the current of the coil 24, so that the viscosity and the fluidity of the magnetorheological fluid 21 are changed, and the damping force of the magnetorheological damper is changed. By the arrangement of the guider 19, when the magnetorheological fluid 21 flows, the piston rod 18 and the shock absorber body 17 can be ensured to be the same axis, and sealing leakage is prevented; in addition, the piston 14 is detachably buckled and assembled into a whole by the right buckle ring 13, so that the disassembly and the assembly are convenient, and the later maintenance is very convenient.

Specifically, the left retaining ring 11 is used for mounting and connecting the left end cover 10, and is convenient to use. The provision of the packing 20 provides a good seal of the air chamber between the floating piston 22 and the shock absorber body 17.

Furthermore, the right retaining ring 13 and the piston 14 are detachably buckled and assembled into a whole, and the end part of the piston 14 is provided with a barb structure.

In this embodiment, can dismantle between right buckle 13 and the piston 14 and withhold the equipment as an organic whole, adopt this kind of detachable split type installation, for integrated into one piece for easy dismounting, so that later maintenance through the barb structure, plays the effect of back locking after the pressure equipment, makes the erection joint firm.

Further, a quick connector 28 is arranged on the piston 14, and one end of the quick connector 28 is connected with an air source.

In this embodiment, the quick-connect coupling 28 is capable of delivering an air supply and inflating an air spring subassembly.

Further, the number of the seal rings I15 and II16 is 2.

In the present embodiment, the sealing effect can be effectively achieved by adopting the number of the left end cover 10 and the piston 14 in the hole structure.

Furthermore, the seal ring I15, the seal ring II16 and the seal ring III27 are all made of HNBR (hydrogenated nitrile butadiene rubber).

In the embodiment, HNBR hydrogenated nitrile rubber is adopted, so that the HNBR hydrogenated nitrile rubber has excellent characteristics of corrosion resistance, tear resistance and compression deformation resistance, and is good in high and low temperature resistance, and the general use temperature range is-40-150 ℃, so that the HNBR hydrogenated nitrile rubber is applicable to the structure.

Further, both end portions of the absorber body 17 are provided with a left lifting lug 29 and a right lifting lug 30, respectively.

In the present embodiment, the left and right ears 29 and 30 are used for mounting connection.

Further, the coil 24 is an enameled wire, and the diameter of the enameled wire is 0.45 mm.

In the present embodiment, the coil 24 is an enameled wire, the diameter of the enameled wire is 0.45mm, and the material and the diameter are suitable for the structure.

Further, the gaps of the coil 24 are coated with oil-resistant insulating gel.

In this embodiment, the oil resistant insulating gel ensures the life of the coil 24 and thus the overall structure.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The cab suspension air spring integrated with the magnetorheological shock absorber comprises an air spring half assembly and the magnetorheological shock absorber, and is characterized in that: the air spring semi-assembly comprises a left end cover, a left retaining ring, an air bag, a right retaining ring and a piston, wherein the left end cover is arranged at the left port of the air bag, the piston is arranged at the right port of the air bag, the left retaining ring is sleeved on the periphery of the left end cover, the right retaining ring is sleeved on the periphery of the end part of the piston, the left end cover is connected with the piston rod, a sealing ring I is embedded in a hole of the left end cover, a sealing ring II is embedded in a hole of the piston, the magnetorheological damper comprises a damper body, a piston rod, a guider, a sealing gasket, magnetorheological fluid, a floating piston, a sealing air chamber, a coil and a line valve, the piston is connected with the damper body, the guider and the sealing gasket are arranged on the upper end surface of the damper body, a gap part between the floating piston and, the coil and the line valve are installed at the end part of the piston rod, a circulation hole is formed in the line valve, and a sealing ring III is installed between the floating piston and the shock absorber body.

2. The cab suspension air spring integrated with a magnetorheological damper as claimed in claim 1, wherein: the right retaining ring and the piston are detachably buckled and assembled into a whole, and the end part of the piston is provided with a barb structure.

3. The cab suspension air spring integrated with a magnetorheological damper as claimed in claim 2, wherein: the piston is provided with a quick-connection plug, and one end of the quick-connection plug is connected with an air source.

4. The cab suspension air spring integrated with a magnetorheological damper as claimed in claim 1, wherein: the number of the sealing rings I and the sealing rings II is 2.

5. The cab suspension air spring integrated with a magnetorheological damper as claimed in claim 4, wherein: and the sealing ring I, the sealing ring II and the sealing ring III are made of HNBR (hydrogenated nitrile butadiene rubber) materials.

6. The cab suspension air spring integrated with a magnetorheological damper as claimed in claim 1, wherein: and the two end parts of the shock absorber body are respectively provided with a left lifting lug and a right lifting lug.

7. The cab suspension air spring integrated with a magnetorheological damper as claimed in claim 1, wherein: the coil is an enameled wire, and the diameter of the enameled wire is 0.45 mm.

8. The cab suspension air spring integrated with a magnetorheological damper as claimed in claim 7, wherein: oil-resistant insulating colloid is coated in the gap of the coil.

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