阅读说明：本技术 基于液压调节系统的车辆电流变液减震器 (Vehicle electrorheological fluid shock absorber based on hydraulic adjusting system ) 是由 刘旭辉 王井湖 胡慧娜 倪修华 李振武 王智深 徐彬 姚行艳 方紫韵 于 2021-05-25 设计创作，主要内容包括：本发明提供了一种基于液压调节系统的车辆电流变液减震器,包括：底座、筒体、上端盖、活塞、液压调节系统、正电极、负电极；底座与筒体的下端连接,上端盖与筒体的上端连接；活塞的活塞盘位于筒体内；上端盖的中心开孔,活塞的活塞杆经过上端盖的中心孔穿出上端盖；液压调节系统包括：主阻尼阀、活塞单向阀、底座单向阀、储油缸,主阻尼阀设置在上端盖上,活塞单向阀设置在活塞盘上,底座单向阀设置在底座上,储油缸通过管线连接主阻尼阀和底座单向阀；正电极设置在筒体的内壁上,负电极设置在活塞盘的侧面；筒体和储油缸内充满电流变液。本发明的减震器响应速度快,提高了车辆行驶时的安全性,并降低了减震器的能耗。(The invention provides a vehicle electrorheological fluid shock absorber based on a hydraulic adjusting system, which comprises: the device comprises a base, a cylinder, an upper end cover, a piston, a hydraulic regulating system, a positive electrode and a negative electrode; the base is connected with the lower end of the cylinder, and the upper end cover is connected with the upper end of the cylinder; the piston disc of the piston is positioned in the cylinder body; the center of the upper end cover is provided with a hole, and a piston rod of the piston passes through the center hole of the upper end cover and penetrates out of the upper end cover; the hydraulic pressure adjusting system includes: the oil storage cylinder is connected with the main damping valve and the base one-way valve through pipelines; the positive electrode is arranged on the inner wall of the cylinder body, and the negative electrode is arranged on the side surface of the piston disc; the cylinder and the oil storage cylinder are filled with electrorheological fluid. The shock absorber has high response speed, improves the safety of vehicles during running, and reduces the energy consumption of the shock absorber.)

1. A vehicle electrorheological fluid shock absorber based on a hydraulic regulation system, comprising: the device comprises a base, a cylinder, an upper end cover, a piston, a hydraulic regulating system, a positive electrode and a negative electrode; the base is connected with the lower end of the cylinder, and the upper end cover is connected with the upper end of the cylinder; the piston includes: the piston rod and the piston disc are connected into a whole, and the piston disc is positioned in the cylinder body; the center of the upper end cover is provided with a hole, and the piston rod penetrates out of the upper end cover through the center hole of the upper end cover; the hydraulic pressure adjusting system includes: the hydraulic oil cylinder comprises a main damping valve, a piston check valve, a base check valve and an oil storage cylinder, wherein the main damping valve is arranged on the upper end cover, the piston check valve is arranged on the piston disc, the base check valve is arranged on the base, and the oil storage cylinder is connected with the main damping valve and the base check valve through pipelines; the positive electrode is arranged on the inner wall of the cylinder body, and the negative electrode is arranged on the side surface of the piston disc; the cylinder and the oil storage cylinder are filled with electrorheological fluid.

2. The hydraulic regulation system-based vehicle electro-hydraulic fluid shock absorber of claim 1, further comprising a control system, the control system comprising: the damper comprises a sensor, a control unit and a variable voltage power supply, wherein the sensor is connected with the damper and the control unit through signals, the control unit is connected with the variable voltage power supply through signals, and the variable voltage power supply supplies power to the damper.

3. The hydraulic regulation system-based vehicle electro-hydraulic fluid shock absorber of claim 2, wherein the piston check valve and the base check valve are closed when the variable voltage power supply is supplying power; when the variable voltage power supply stops supplying power, the piston one-way valve is conducted with the base one-way valve.

4. The hydraulic regulation system-based vehicle electro-hydraulic fluid shock absorber of claim 1, wherein the piston check valve is configured to flow from a lower portion of the piston disc to an upper portion of the piston disc, and the base check valve is configured to flow from the reserve cylinder to the inside of the cylinder.

5. The hydraulic regulation system-based vehicle electro-hydraulic fluid shock absorber according to claim 1, wherein the number of the piston check valves is 2, and the piston check valves are symmetrically arranged on the piston disc; the quantity of base check valve is 2, the base check valve is in symmetrical arrangement on the base.

6. The hydraulic regulation system-based vehicle electro-hydraulic fluid shock absorber of claim 1, wherein the positive electrodes are symmetrically disposed on the inner wall of the cylinder and the negative electrodes are symmetrically disposed on the side of the piston disc.

7. The hydraulic regulation system-based vehicle electro-hydraulic fluid shock absorber of claim 1, wherein the positive electrode and the negative electrode are oppositely disposed.

Technical Field

The invention relates to the technical field of shock absorbers, in particular to a vehicle electrorheological fluid shock absorber based on a hydraulic adjusting system.

Background

The hydraulic shock absorber is based on the oil circulation mode, and the hydraulic system can be divided into an open system and a closed system, and the basic action of the hydraulic shock absorber is stretching and shrinking. Compared with a closed system, the structure is more compact, and leakage caused by pipeline connection is reduced; the contact with air is less, air is not easy to permeate into the system, pipeline vibration can be avoided, and the transmission system is more stable. The above advantages of a closed system make it easy to achieve the damping characteristics required for a vehicle.

The electrorheological fluid is a new intelligent material, and is suspension or emulsion formed by dispersing polar easy-to-polarize dispersion medium in insulating continuous medium. Under the action of the electric field, the shearing force of the electrorheological fluid can be changed remarkably, and continuous, rapid and reversible transformation between liquid and solid can be realized. Therefore, the shock absorber based on the electrorheological fluid has the advantages of high response speed, simple structure, easy realization of computer control, strong vibration and noise reduction capability and the like, and has remarkable advantages compared with the traditional hydraulic shock absorber. However, there is currently a lack of vehicle shock absorbers based on electrorheological fluids.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a vehicle electrorheological fluid shock absorber based on a hydraulic adjusting system, which improves the controllability and the response speed of the shock absorber.

According to the present invention, there is provided a vehicle electro-hydraulic fluid damper based on a hydraulic adjustment system, comprising: the device comprises a base, a cylinder, an upper end cover, a piston, a hydraulic regulating system, a positive electrode and a negative electrode; the base is connected with the lower end of the cylinder, and the upper end cover is connected with the upper end of the cylinder; the piston includes: the piston rod and the piston disc are connected into a whole, and the piston disc is positioned in the cylinder body; the center of the upper end cover is provided with a hole, and the piston rod penetrates out of the upper end cover through the center hole of the upper end cover; the hydraulic pressure adjusting system includes: the hydraulic oil cylinder comprises a main damping valve, a piston check valve, a base check valve and an oil storage cylinder, wherein the main damping valve is arranged on the upper end cover, the piston check valve is arranged on the piston disc, the base check valve is arranged on the base, and the oil storage cylinder is connected with the main damping valve and the base check valve through pipelines; the positive electrode is arranged on the inner wall of the cylinder body, and the negative electrode is arranged on the side surface of the piston disc; the cylinder and the oil storage cylinder are filled with electrorheological fluid.

Further, still include the control system, the control system includes: the damper comprises a sensor, a control unit and a variable voltage power supply, wherein the sensor is connected with the damper and the control unit through signals, the control unit is connected with the variable voltage power supply through signals, and the variable voltage power supply supplies power to the damper.

Further, when the variable voltage power supply supplies power, the piston check valve and the base check valve are closed; when the variable voltage power supply stops supplying power, the piston one-way valve is conducted with the base one-way valve.

Furthermore, the flowing direction of the piston check valve is from the lower part of the piston disc to the upper part of the piston disc, and the flowing direction of the base check valve is from the oil storage cylinder to the cylinder body.

Preferably, the number of the piston one-way valves is 2, and the piston one-way valves are symmetrically arranged on the piston disc; the quantity of base check valve is 2, the base check valve is in symmetrical arrangement on the base.

Preferably, the positive electrodes are symmetrically arranged on the inner wall of the cylinder, and the negative electrodes are symmetrically arranged on the side surface of the piston disc.

Further, the positive electrode and the negative electrode are oppositely disposed.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention can quickly respond to the damping system, and the output damping of the damper is changed by changing the electric field intensity in the electrorheological fluid damping device and further changing the shear force of the electrorheological fluid in the electrorheological fluid damping device; when the vehicle generates vibration during running, the shock absorber based on the current change can effectively control the vibration, so that the comfort and the safety of the vehicle during running are improved.

2. According to the invention, a complete damping closed-loop control system is formed by the control system and the electrorheological fluid damper, so that the damping can be effectively realized, and the vehicle running experience is improved.

3. The invention adopts the hydraulic adjusting system, can reduce the damping force generated by the electrorheological fluid when the electrorheological fluid shock absorber returns to the original position, and effectively reduces the energy consumption.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is an overall structural view of a vehicle electro-hydraulic fluid shock absorber based on a hydraulic adjustment system according to the present invention;

fig. 2 is a schematic diagram of a closed-loop control system of a vehicle electrorheological fluid shock absorber based on a hydraulic pressure regulating system provided by the invention.

In the figure:

1-a piston;

2-a main damping valve;

3-upper end cover;

4-a cylinder body;

5-piston check valve;

6-oil storage cylinder;

7-a negative electrode;

8-a positive electrode;

9-base check valve;

10-base.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

As shown in figure 1, the vehicle electrorheological fluid shock absorber based on the hydraulic pressure regulating system comprises a piston 1, a main damping valve 2, an upper end cover 3, a cylinder 4, a piston check valve 5, an oil storage cylinder 6, a negative electrode 7, a positive electrode 8, a base check valve 9 and a base 10.

The base 10 is connected with the lower end of the cylinder 4, the upper end cover 3 is connected with the upper end of the cylinder 4, and the joints are sealed; the base 10, the cylinder 4 and the upper end cover 3 form a cavity of the shock absorber. The center of the upper end cover 3 is provided with a hole. The piston 1 comprises a piston rod at the upper part and a piston disc at the lower part, and the piston rod and the piston disc are connected into a whole. The piston disc is arranged in the cylinder body 4, and the cavity of the shock absorber is divided into an upper part and a lower part; the piston rod penetrates out of the central opening of the upper end cover 3, and the opening is sealed.

The main damping valve 2 is arranged on the upper end cover 3; the piston one-way valve 5 is arranged on the piston disc and connects the upper cavity with the lower cavity in a one-way manner; the base one-way valve 9 is arranged on the base 10; the reserve tube 6 connects the main damping valve 2 and the base check valve 9 through a pipeline. The main damping valve 2, the piston one-way valve 5, the oil storage cylinder 6 and the base one-way valve 9 form a hydraulic adjusting system for controlling the working stroke of the damper and adjusting the output of the damping force. In this embodiment, the number of the piston check valves 5 and the number of the base check valves 9 are two, and the two check valves are respectively and symmetrically arranged on the piston disc and the base 10. The circulation direction of the piston check valve 5 is from the lower part cavity of the shock absorber to the upper part cavity, and the circulation direction of the base check valve 9 is from the oil storage cylinder 6 to the cylinder 4. The interior of the cylinder 4 and the hydraulic pressure adjusting system is filled with electrorheological fluid.

When the shock absorber is stretched, the pressure of the lower cavity of the shock absorber is higher than that of the upper cavity of the shock absorber by the aid of the main damping valve 2, and energy consumption of the shock absorber during stretching and resetting is reduced. When the shock absorber resets, the piston check valve 5 and the base check valve 9 are in a conducting state under the pressure generated by the electrorheological fluid in the upper cavity and the lower cavity, and the energy consumed during resetting is reduced through the circulation of the electrorheological fluid. The oil storage cylinder 6 plays a role in adjusting pressure fluctuation and vibration when the electrorheological fluid circulates.

The negative electrode 7 is arranged on the side of the piston disc and the positive electrode 8 is arranged on the inner wall of the cylinder 4. In this embodiment, the negative electrodes 7 are symmetrically disposed on the piston plate, the positive electrodes 8 are symmetrically disposed on the inner wall of the cylinder 4, and the negative electrodes 7 and the positive electrodes 8 are disposed opposite to each other. After the negative electrode 7 and the positive electrode 8 are arranged, the side surface of the piston disc and the inner wall of the cylinder 4 still keep a certain clearance. The shock absorber of this embodiment accessible control electric field changes the electrorheological fluid shearing force, and then changes the damping force of shock absorber output. When voltage is applied to the negative electrode 7 and the positive electrode 8, the shearing force of the electrorheological fluid between the piston 1 and the cylinder 4 is increased under the action of the electric field, so that the purpose of increasing the output damping force is achieved.

As shown in fig. 2, the hydraulic regulation system-based vehicle electro-hydraulic fluid shock absorber of the present invention further includes a control system composed of a sensor, a control unit and a variable voltage power supply. The sensor is connected with the shock absorber body and used for acquiring road condition information and riding comfort and driving safety information under different road conditions and then transmitting signals to the control unit; the control unit determines the voltage transmitted to the positive electrode and the negative electrode of the shock absorber and transmits a signal to the variable voltage power supply; the variable voltage power supply applies a voltage to the negative electrode 7 and the positive electrode 8 according to a signal of the control unit, and the damper provides a damping force according to the strength of the electric field.

According to the vehicle electrorheological fluid shock absorber based on the hydraulic adjusting system, when vibration occurs, the piston 1 can generate downward pressure, and the control system adjusts the variable voltage power supply according to an input signal so as to achieve output damping adaptive to the variable voltage power supply; at this time, in the hydraulic pressure adjusting system, the piston check valve 5 and the base check valve 9 are closed, and the cyclic decompression is not performed. After the damping process is finished, the piston rod is subjected to upward reset force, the variable voltage power supply is powered off at the moment, the piston one-way valve 5 is communicated with the base one-way valve 9, electrorheological fluid on the upper part of the cavity of the damper flows to the lower part of the cavity through a gap between the piston disc and the cylinder body 4, part of electrorheological fluid flows to the oil storage cylinder 6 through the main damping valve 2 and returns to the lower part of the cavity of the damper through the oil storage cylinder 6 and the base one-way valve 9, and the damping force received during resetting is reduced through circulation of the electrorheological fluid.

According to the vehicle electrorheological fluid shock absorber based on the hydraulic adjusting system, the electric field intensity in the electrorheological fluid shock absorbing device is changed, and then the electrorheological fluid shearing force in the electrorheological fluid shock absorbing device is changed, so that the output damping of the shock absorber is changed, and the comfort and the safety of a vehicle during running are improved; the hydraulic adjusting system reduces the damping force of the electrorheological fluid when the shock absorber is reset, and can effectively reduce energy consumption.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.