CN222496001U - A shock absorbing suspension system and a vehicle suspension device - Google Patents
A shock absorbing suspension system and a vehicle suspension device Download PDFInfo
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- CN222496001U CN222496001U CN202421292527.1U CN202421292527U CN222496001U CN 222496001 U CN222496001 U CN 222496001U CN 202421292527 U CN202421292527 U CN 202421292527U CN 222496001 U CN222496001 U CN 222496001U
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Abstract
The embodiment of the utility model relates to the technical field of vehicle suspensions, in particular to a damping suspension system and a vehicle suspension device, which comprise a front suspension hydraulic cylinder, a damping suspension system and a damping suspension system, wherein a first piston is arranged in the front suspension hydraulic cylinder, and a first piston upper chamber and a first piston lower chamber are formed in the front suspension hydraulic cylinder; the rear suspension hydraulic cylinder is provided with a second piston, a second piston upper chamber and a second piston lower chamber are formed in the rear suspension hydraulic cylinder, a first pipeline is communicated with a first electric control valve, a second pipeline is communicated with a first damping adjusting valve, a second electric control valve, a third electric control valve and a second damping adjusting valve, a first oil return pressure tank is arranged on the second pipeline, and the first oil return pressure tank is respectively communicated with the first damping adjusting valve and the second electric control valve. The utility model can adjust the buffering and damping effects of the suspension, meets the requirements of different road conditions, and is beneficial to improving the driving experience of users and the texture of the whole vehicle.
Description
Technical Field
The embodiment of the utility model relates to the technical field of vehicle suspensions, in particular to a damping suspension system and a vehicle suspension device.
Background
In various fields of technology, automotive suspension systems typically use springs or hydraulic components to provide a shock absorbing and cushioning function. However, this approach is relatively single, the adjustment method is also quite fixed, and lacks sufficient flexibility. This may result in a lower comfort level for the passengers while the vehicle is traveling, especially on bumpy roads, which may be perceived as more uncomfortable by the passengers. Therefore, the design and the operation mode of the automobile suspension system are improved, and the running quality and the riding comfort of the whole automobile can be further improved.
Disclosure of utility model
In order to overcome the defects of the prior art, the utility model provides a damping suspension system and a vehicle suspension device, and aims to solve the problems that the damping and buffering modes of the suspension system in the prior art are single, the regulation and control modes are dead plates and the flexibility is poor.
One aspect of the present utility model provides a vehicle suspension device including:
The front suspension hydraulic cylinder is provided with a first piston, and a first piston upper chamber and a first piston lower chamber are formed in the front suspension hydraulic cylinder;
The rear suspension hydraulic cylinder is provided with a second piston, and a second upper piston chamber and a second lower piston chamber are formed in the rear suspension hydraulic cylinder;
The first pipeline is communicated with the first electric control valve;
The second pipeline is communicated with the first damping adjusting valve, the second electric control valve, the third electric control valve and the second damping adjusting valve, a first oil return pressure tank is arranged on the second pipeline, the first oil return pressure tank is respectively communicated with the first damping adjusting valve and the second electric control valve, a second oil return pressure tank is arranged on the second pipeline, the second oil return pressure tank is respectively communicated with the third electric control valve and the second damping adjusting valve, and the second oil return pressure tank is respectively communicated with the first piston lower chamber and the second piston lower chamber;
The third pipeline is communicated with the fourth electric control valve and the fifth electric control valve, and is provided with a fourth pipeline which is communicated with the third pipeline;
The high-pressure air pump is respectively communicated with the third pipeline and the fourth pipeline;
The high-pressure oil pump is respectively communicated with the third pipeline and the second pipeline.
In one scheme of the utility model, a sixth electric control valve and a seventh electric control valve are respectively arranged on a pipeline communicated with the first oil return pressure tank and the second oil return pressure tank;
The second electric control valve, the third electric control valve and the fifth electric control valve are kept in a normally closed state, and the high-pressure air pump is used for operating and supplying high-pressure air to the first oil return pressure tank or the second oil return pressure tank when the sixth electric control valve and the seventh electric control valve are opened.
In one scheme of the utility model, a second electric control valve and a third electric control valve are arranged at the pipeline end of the second pipeline for communicating the first oil return pressure tank with the second oil return pressure tank, and the second electric control valve and the third electric control valve are used for controlling the communication and disconnection between the first piston lower chamber and the second piston lower chamber;
and the second electric control valve and the third electric control valve are kept in a normally open state.
In one of the schemes of the utility model, the third pipeline is connected between the high-pressure oil pump and the second pipeline, and a fourth electric control valve is arranged on the third pipeline;
wherein the fourth electrically controlled valve is kept in a normally closed state.
In one scheme of the utility model, a first damping adjustment valve and a second damping adjustment valve are arranged in a pipeline for communicating the first piston lower chamber with the second piston, the first damping adjustment valve is communicated with the first piston lower chamber, and the second damping adjustment valve is communicated with the second piston lower chamber.
In one of the schemes of the utility model, a first electric control valve is arranged in a pipeline which is communicated with the first piston upper chamber and the second piston upper chamber, and the first pipeline is connected between a fourth electric control valve and a fifth electric control valve on a third pipeline.
In one of the schemes of the utility model, the input end of the high-pressure oil pump is connected with the output end of the hydraulic oil storage tank.
In one embodiment of the present utility model, the third pipeline is in communication with the first pipeline, the second pipeline and the fourth pipeline.
In one of the schemes of the utility model, the top parts of the first oil return pressure tank and the second oil return pressure tank are respectively provided with an air inlet and outlet valve, and the high-pressure air pump is used for conveying high-pressure air from the top part of the first oil return pressure tank or the second oil return pressure tank through the air inlet and outlet valve.
In one aspect of the present utility model, there is also provided a vehicle suspension apparatus comprising a frame and a shock absorbing suspension system mounted on the frame, a piston rod in the shock absorbing suspension system being connected to front and rear wheels, respectively;
wherein, the damping suspension system can adopt the damping suspension system according to any one of the schemes.
The beneficial effects of the utility model are as follows:
In the embodiment of the utility model, the third pipeline and the fourth pipeline on the left side can be controlled to be connected with the first oil return pressure tank and the second oil return pressure tank through the sixth electric control valve and the seventh electric control valve, the high-pressure air pump is used for introducing high-pressure air into the first oil return pressure tank and the second oil return pressure tank through the third pipeline and the fourth pipeline on the left side, the sixth electric control valve and the seventh electric control valve can be closed after the high-pressure air required by setting is introduced, and the high-pressure air pump is used for filling high-pressure air into the first piston upper chamber and the second piston upper chamber through the connected third pipeline and the first pipeline connected with the third electric control valve, and the fifth electric control valve and the first electric control valve are opened in the process, and the fourth electric control valve is closed. Therefore, the first piston can downwards support the wheels relative to the front suspension hydraulic cylinder, the second piston can downwards support the wheels relative to the rear suspension hydraulic cylinder, the second pipeline, the second electric control valve and the third electric control valve can ensure that the air pressure of the first oil return pressure tank and the air pressure of the second oil return pressure tank are balanced, so that the balance of the buffering and damping effect is improved, and according to the scheme, the sixth electric control valve, the seventh electric control valve and the high-pressure air pump are mutually matched, the air pressure value of high-pressure air in the upper chamber of the first piston and the upper chamber of the second piston can be flexibly adjusted, so that the buffering and damping effect of the suspension is adjusted, the requirements of different road conditions are met, the driving experience of a user is facilitated to be improved, and the texture of the whole vehicle is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a shock absorbing suspension system according to an embodiment of the present utility model;
FIG. 2 is a schematic view of a two-axle suspension scheme according to embodiment 2 of the present utility model;
FIG. 3 is a schematic view of a three-axle suspension scheme according to embodiment 3 of the present utility model;
Fig. 4 is a schematic view of a four-axle suspension scheme according to embodiment 4 of the present utility model.
The reference numerals are as follows:
10. A front suspension hydraulic cylinder; 101, a first piston, 102, a first piston upper chamber, 103, a first piston lower chamber;
20. A rear suspension hydraulic cylinder; 201, a second piston, 202, a second piston upper chamber, 203, a second piston lower chamber;
30. 301, a first electric control valve;
40. The second pipeline, 401, a first damping adjusting valve, 402, a first oil return pressure tank, 403, a second electric control valve, 404, a third electric control valve, 405, a second oil return pressure tank, 406, a second damping adjusting valve;
50. Third pipeline, 501, fourth electric control valve, 502, fifth electric control valve, 503, sixth electric control valve
60. 601, Seventh electric control valve;
70. a high pressure air pump;
80. a high pressure oil pump;
A. The hydraulic control system comprises a communication control valve, an A1 left side suspension pipeline, an A2 right side suspension pipeline, a 1001 first high-pressure air storage tank, a 1002 second high-pressure air storage tank, a 1003 middle suspension cylinder.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear are referred to in the embodiments of the present utility model), the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture, and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
Example 1
Referring to FIG. 1, in one embodiment of the present utility model, there is also indicated a shock absorbing suspension system comprising:
A front suspension cylinder 10 provided with a first piston 101, the first piston 101 having a first piston upper chamber 102 and a first piston lower chamber 103 formed in the front suspension cylinder 10;
A rear suspension cylinder 20 provided with a second piston 201, the second piston 201 having a second piston upper chamber 202 and a second piston lower chamber 203 formed in the rear suspension cylinder 20;
a first pipeline 30 communicated with the first electric control valve 301;
A second pipeline 40, which is communicated with a first damping adjustment valve 401, a second electric control valve 403, a third electric control valve 404 and a second damping adjustment valve 406, wherein the second pipeline 40 is provided with a first oil return pressure tank 402, the first oil return pressure tank 402 is respectively communicated with the first damping adjustment valve 401 and the second electric control valve 403, the second pipeline 40 is provided with a second oil return pressure tank 405, the second oil return pressure tank 405 is respectively communicated with a third electric control valve 404 and the second damping adjustment valve 406, and the second oil return pressure tank 405 is respectively communicated with the first lower piston chamber 103 and the second lower piston chamber 203;
a third pipeline 50 is communicated with a fourth electric control valve 501 and a fifth electric control valve 502, and the third pipeline 50 is provided with a fourth pipeline 60 which is communicated with each other;
A high-pressure air pump 70, wherein the high-pressure air pump 70 is respectively communicated with the third pipeline 50 and the fourth pipeline 60;
the high-pressure oil pump 80, the said high-pressure oil pump 80 connects the said third pipeline 50, second pipeline 40 separately.
When the front wheel encounters an obstacle and moves violently upwards, the front wheel can bounce higher under the condition in the prior art, the rear suspension is unchanged, when the rear wheel encounters an obstacle and a bulge, the rear part of the vehicle body rises very high, the front part of the vehicle body is relatively unchanged, and angular vibration, that is, the reciprocating motion of lifting back and forth, can be generated.
Compared with the prior art, in the embodiment of the utility model, the third pipeline 50 and the fourth pipeline 60 on the left side can be controlled to be connected with the first oil return pressure tank 402 and the second oil return pressure tank 405 through the sixth electric control valve 503 and the seventh electric control valve 601, the high-pressure air pump 70 is used for introducing high-pressure air into the first oil return pressure tank 402 and the second oil return pressure tank 405 through the third pipeline 50 and the fourth pipeline 60 on the left side, the sixth electric control valve 503 and the seventh electric control valve 601 can be closed after the high-pressure air required by setting is introduced, the high-pressure air pump 70 is used for filling high-pressure air into the first piston upper chamber 102 and the second piston upper chamber 202 through the third pipeline 50 and the first pipeline 30 connected with the third electric control valve 503, and the fifth electric control valve 502 and the first electric control valve 301 are opened and the fourth electric control valve 501 is closed in the process. Therefore, the first piston 101 can support the wheel downwards relative to the front suspension hydraulic cylinder 10, the second piston 201 can support the wheel downwards relative to the rear suspension hydraulic cylinder 20, the second pipeline 40, the second electric control valve 403 and the third electric control valve 404 can ensure that the air pressures of the first oil return pressure tank 402 and the second oil return pressure tank 405 are balanced, so that the balance of the buffering and damping effect is improved, and according to the scheme, the sixth electric control valve 503, the seventh electric control valve 601 and the high-pressure air pump 70 are matched with each other, the air pressure value of high-pressure air in the first piston upper chamber 102 and the second piston upper chamber 202 can be flexibly adjusted, so that the buffering and damping effect of the suspension can be adjusted, the requirements of different road conditions can be met, the driving experience of a user can be improved, and the texture of the whole vehicle can be improved.
Secondly, the front suspension hydraulic cylinder 10 and the rear suspension hydraulic cylinder 20 are communicated through a part of the first pipeline 30, so that the angular vibration generated by the vehicle body when the vehicle encounters a severe road condition can be reduced, and when the front wheels encounter an obstacle to move upwards and violently, the first piston 101 can ascend and transmit a part of pressure to the second piston 201 of the rear suspension hydraulic cylinder 20 through the first pipeline 30 so as to descend and drive the rear part of the vehicle body to rise simultaneously.
In another application scenario of the embodiment, the high-pressure air pump 70 is provided with a sixth electric control valve 503 and a seventh electric control valve 601 on the pipelines communicated with the first oil return pressure tank 402 and the second oil return pressure tank 405 respectively;
Wherein the second, third and fifth electrically controlled valves 403, 404 and 502 are maintained in a normally closed state for the high pressure air pump 70 to operate and supply high pressure air to the first or second return pressure tanks 402 and 405 when the sixth and seventh electrically controlled valves 503 and 601 are opened.
In another application scenario of the embodiment, a second electric control valve 403 and a third electric control valve 404 are provided at a pipe end of the second pipe 40 for communicating the first oil return pressure tank 402 with the second oil return pressure tank 405, where the second electric control valve 403 and the third electric control valve 404 are used for controlling the communication and disconnection between the first piston lower chamber 103 and the second piston lower chamber 203;
Wherein the second electric control valve 403 and the third electric control valve 404 are kept in a normally open state.
The second electric control valve 403 can regulate and control the closing or communication between the first oil return pressure tank 402 and the high-pressure oil pump 80, and the third electric control valve 404 regulates and controls the closing or communication between the high-pressure oil pump 80 and the second oil return pressure tank.
In another application scenario of the present embodiment, the third pipeline 50 is connected between the high-pressure oil pump 80 and the second pipeline 40, and a fourth electric control valve 501 is disposed on the third pipeline 50;
wherein the fourth electrically controlled valve 501 is kept in a normally closed state.
So that the second pipe 40 communicates with the third pipe 50, and the high-pressure oil pump 80 may communicate with both the second pipe 40 and the third pipe 50, for regulating communication or closing between the third pipe 50 and the first pipe 30 through the fourth electronic control valve 501.
In another application scenario of the embodiment, a first damping adjustment valve 401 and a second damping adjustment valve 406 are disposed in a pipeline for communicating the first piston lower chamber 103 with the second piston 201, the first damping adjustment valve 401 is communicated with the first piston lower chamber 103, and the second damping adjustment valve 406 is communicated with the second piston lower chamber 203.
The hydraulic oil of the first piston lower chamber 103 and the second piston lower chamber 203 can be delivered to the first oil return pressure tank 402 and the second oil return pressure tank 405 through the second pipeline 40, then the second electric control valve 403 and the third electric control valve 404 are closed, the hydraulic oil is delivered to the first piston upper chamber 102 and the second piston upper chamber 202 through the third pipeline 50 and the first pipeline 30, thereby increasing the pressure to enable the first piston 101 and the second piston 201 to descend so as to raise the chassis height, and conversely, decreasing the pressure to enable the first piston 101 and the second piston 201 to ascend so as to lower the chassis height
In another application scenario of the present embodiment, a first electrically controlled valve 301 is disposed in a pipeline that the first piston upper chamber 102 communicates with the second piston upper chamber 202, and the first pipeline 30 is connected between a fourth electrically controlled valve 501 and a fifth electrically controlled valve 502 on the third pipeline 50.
The first electrically controlled valve 301 can regulate the communication or closing of the first piston upper chamber 102, and simultaneously can control the flow of hydraulic oil into and out of the first piston upper chamber 102, and the fourth electrically controlled valve 501 and the fifth electrically controlled valve 502 are used for regulating the communication or closing of the third pipeline 50.
In another application scenario of the embodiment, the first electric control valve 301 may also be used to cut off the oil path through the brake signal switch of the brake pedal when the vehicle is in emergency braking during high-speed running, so as to prevent the pressure in the front suspension cylinder 10 from being transmitted to the rear suspension cylinder 20 through the first pipeline 30 during braking from generating excessive nodding phenomenon.
After the fourth electric control valve 501 and the second electric control valve 403 are closed, the hydraulic oil in the hydraulic oil storage tank can be delivered to the second return pressure tank 405 by the high-pressure oil pump 80, and the pressure is independently increased to the rear suspension hydraulic cylinder 20, so that the cargo carrying capacity is improved.
In another application scenario of the present embodiment, the input end of the high-pressure oil pump 80 is connected to the output end of the hydraulic oil storage tank. The third conduit 50 communicates with the first conduit 30, the second conduit 40 and the fourth conduit 60.
In another application scenario of the embodiment, the top of the first oil return pressure tank 402 and the top of the second oil return pressure tank 405 are both provided with an air intake and exhaust valve, and the high-pressure air pump 70 delivers high-pressure air from the top of the first oil return pressure tank 402 or the top of the second oil return pressure tank 405 through the air intake and exhaust valve.
In another application scenario, when the vehicle encounters a bumpy road surface, the elastic potential energy of the first piston upper chamber 102, the second piston lower chamber 202, the first oil return pressure tank 402 and the second oil return pressure tank 405 increases to reversely push the first piston 101 and the second piston 201 to severely descend, and at this time, the oil in the first piston lower chamber 103 and the second piston lower chamber 203 changes the elastic potential energy into heat energy through the first damping adjustment valve 401 or the second damping adjustment valve 402 to enable the first piston 101 and the second piston 201 to slowly descend, so as to eliminate the bumpy of the vehicle.
In one embodiment of the utility model, there is also pointed out a vehicle suspension apparatus comprising a frame and a shock absorbing suspension system mounted on the frame, a piston rod within the shock absorbing suspension system being connected to front and rear wheels, respectively;
Wherein the shock absorbing suspension system may be as described in any of the above embodiments.
Example 2
As shown in fig. 2, the present utility model provides a shock absorbing suspension system comprising a left side suspension pipe A1 and a right side suspension pipe A2, wherein the left side suspension pipe A1 comprises a front suspension cylinder 10 and a rear suspension cylinder 20, the right side suspension pipe A2 comprises a front suspension cylinder 10 and a rear suspension cylinder 20, the left side suspension pipe A1 and the right side suspension pipe A2 are communicated by a common oil gas path, the common oil gas path is provided with a communication control valve a, and the communication control valve a is used for controlling the communication or closing of the common oil gas path so as to cut off or connect the left side suspension pipe A1 and the right side suspension pipe A2. The high-pressure air pump 70 and the high-pressure oil pump 80 are provided on a common oil-gas path for supplying high-pressure oil or high-pressure air to the left-side suspension pipe A1 and/or the right-side suspension pipe A2.
In this embodiment, the communication control valve a is closed when the vehicle is traveling at a high speed, preventing the vehicle from rolling when the vehicle is over-bent at a high speed, and is opened when the vehicle is traveling at a low speed under severe road conditions, preventing the vehicle body from rolling due to jolt.
Under the application scenario of the present embodiment, in any one of the two front suspension hydraulic cylinders 10, the first piston upper chambers 102 are all provided with a first high-pressure air storage tank 1001 in a communicating manner, a sixth control valve 503 is provided between the first high-pressure air storage tank 1001 and the high-pressure air pump 70, the first piston lower chambers 103 are all provided with a first oil return pressure tank 402 in a communicating manner, a first damping adjustment valve 401 is provided between the first piston lower chambers 103 and the first oil return pressure tank 402, and a second electric control valve 403 is provided between the first oil return pressure tank 402 and the high-pressure oil pump 80;
In any one of the two rear suspension hydraulic cylinders 20, the second piston upper chambers 202 are all communicated with a second high-pressure air storage tank 1002, a seventh electric control valve 601 is arranged between the second high-pressure air storage tank 1002 and the high-pressure air pump 70, the second piston lower chambers 203 are all communicated with a second oil return pressure tank 405, a second damping adjustment valve 406 is arranged between the second piston lower chambers 203 and the second oil return pressure tank 405, and a third electric control valve 404 is arranged between the second oil return pressure tank 405 and the high-pressure oil pump 80.
In the application scene, the double-axle suspension effect of four wheels on the left side and the right side can be realized by matching the high-pressure oil pump and the high-pressure air pump with each pipeline and valve. In special road conditions, if left side vehicle body is inclined, high-pressure gas can be respectively added to the left side suspension pipeline A1 through a switch communicated with the control valve A and the left side suspension pipeline A1, so that a piston in the left side suspension pipeline A1 descends, and the inclination of the vehicle body caused by uneven road is improved. The right side vehicle body is adjusted in the same way.
Example 3
As shown in fig. 3, the present utility model provides a shock absorbing suspension system including a left side suspension line A1, a right side suspension line A2, the left side suspension line A1 including a front suspension cylinder 10, a middle suspension cylinder 1003, and a rear suspension cylinder 20, the right side suspension line A2 including a front suspension cylinder 10, a middle suspension cylinder 1003, and a rear suspension cylinder 20, the left side suspension line A1 and the right side suspension line A2 being communicated by a common oil passage provided with a communication control valve a for controlling communication or closing of the common oil passage, thereby cutting off or connecting the left side suspension line A1 and the right side suspension line A2. The high-pressure air pump 70 and the high-pressure oil pump 80 are provided on a common oil-gas path for supplying high-pressure oil or high-pressure air to the left-side suspension pipe A1 and/or the right-side suspension pipe A2.
In this embodiment, the communication control valve a is closed when the vehicle is traveling at a high speed, preventing the vehicle from rolling when the vehicle is over-bent at a high speed, and is opened when the vehicle is traveling at a low speed under severe road conditions, preventing the vehicle body from rolling due to jolt.
Under an application scenario of the present embodiment, a first high-pressure air storage tank 1001 is provided in communication with the first piston upper chamber 102 of any one of the two front suspension hydraulic cylinders 10, a sixth control valve 503 is provided between the first high-pressure air storage tank 1001 and the high-pressure air pump 70, the first high-pressure air storage tank 1001 is provided in communication with the piston upper chamber of the middle suspension cylinder 1003, a first return oil pressure tank 402 is provided in communication with the first piston lower chamber 103, a first damping adjustment valve 401 is provided between the first piston lower chamber 103 and the first return oil pressure tank 402, a second electric control valve 403 is provided between the first return oil pressure tank 402 and the high-pressure oil pump 80, and a damping valve is provided between the piston lower chamber of the middle suspension cylinder 1003 and the oil storage tank of the high-pressure oil pump 80;
In any one of the two rear suspension hydraulic cylinders 20, the second piston upper chambers 202 are all communicated with a second high-pressure air storage tank 1002, a seventh electric control valve 601 is arranged between the second high-pressure air storage tank 1002 and the high-pressure air pump 70, the second piston lower chambers 203 are all communicated with a second oil return pressure tank 405, a second damping adjustment valve 406 is arranged between the second piston lower chambers 203 and the second oil return pressure tank 405, and a third electric control valve 404 is arranged between the second oil return pressure tank 405 and the high-pressure oil pump 80.
In the application scene, the three-axle suspension effect of six wheels on the left side and the right side can be realized by matching the high-pressure oil pump and the high-pressure air pump with each pipeline and valve. In special road conditions, if left side vehicle body is inclined, high-pressure gas can be respectively added to the left side suspension pipeline A1 through a switch communicated with the control valve A and the left side suspension pipeline A1, so that a piston in the left side suspension pipeline A1 descends, and the inclination of the vehicle body caused by uneven road is improved. The right side vehicle body is adjusted in the same way.
Example 4
As shown in fig. 4, the present utility model provides a shock absorbing suspension system including a left side suspension pipe A1 and a right side suspension pipe A2, the left side suspension pipe A1 including a front suspension cylinder 10 and a rear suspension cylinder 20 provided in pairs and provided with two pairs, the right side suspension pipe A2 including a front suspension cylinder 10 and a rear suspension cylinder 20 provided in pairs and provided with two pairs, the left side suspension pipe A1 and the right side suspension pipe A2 being communicated by one common oil passage provided with a communication control valve a for controlling communication or closing of the common oil passage, thereby cutting off or connecting the left side suspension pipe A1 and the right side suspension pipe A2. The high-pressure air pump 70 and the high-pressure oil pump 80 are provided on a common oil-gas path for supplying high-pressure oil or high-pressure air to the left-side suspension pipe A1 and/or the right-side suspension pipe A2.
In this embodiment, the communication control valve a is closed when the vehicle is traveling at a high speed, preventing the vehicle from rolling when the vehicle is over-bent at a high speed, and is opened when the vehicle is traveling at a low speed under severe road conditions, preventing the vehicle body from rolling due to jolt.
In an application scenario of the embodiment, in a front suspension hydraulic cylinder 10 and a rear suspension hydraulic cylinder 20 which are arranged in pairs in one of left suspension pipelines A1, a first high-pressure air storage tank 1001 is arranged in a first piston upper chamber 102 in a communicating manner, a first high-pressure air storage tank 1001 is arranged in a second piston upper chamber 202 in a communicating manner, the first high-pressure air storage tank 1001 and the second piston upper chamber 202 are connected in parallel, a sixth control valve 503 is arranged between the first high-pressure air storage tank 1001 and the high-pressure air pump 70, a first oil return pressure tank 402 is arranged in a communicating manner in a first piston lower chamber 103 in a communicating manner, a first oil return pressure tank 402 is arranged in a communicating manner in a second piston lower chamber 203 in a communicating manner, a first oil return pressure tank 402 is arranged in a connecting manner in a first piston lower chamber 103 and the second piston lower chamber 203 in a parallel, damping adjustment valves are arranged between the first oil return pressure tank 103 and the first oil return pressure tank 402, and a damping adjustment valve 403 is arranged between the first oil return pressure tank 402 and the high-pressure pump 80;
In the front suspension hydraulic cylinder 10 and the rear suspension hydraulic cylinder 20 which are arranged in pairs in the left suspension pipeline A1, a first piston upper chamber 102 is communicated with a second high-pressure air storage tank 1002, a second piston upper chamber 202 is communicated with a second high-pressure air storage tank 1002, the first piston upper chamber 102 and the second piston upper chamber 202 are connected in parallel to the second high-pressure air storage tank 1002, a seventh electric control valve 601 is arranged between the second high-pressure air storage tank 1002 and the high-pressure air pump 70, a second oil return pressure tank 405 is communicated with a first piston lower chamber 103, a second oil return pressure tank 405 is communicated with a second piston lower chamber 203, the first piston lower chamber 103 and the second piston lower chamber 203 are connected in parallel to the second oil return pressure tank 405, damping adjustment valves are respectively arranged between the first piston lower chamber 103 and the second oil return pressure tank 405, and between the second piston lower chamber 203 and the second oil return pressure tank 405, and a third electric control valve 404 is arranged between the second oil return pressure tank 405 and the high-pressure pump 80;
the structure of the right side suspension line A2 is the same as that of the left side suspension line A1.
In the application scene, the four-axle suspension effect of eight wheels on the left side and the right side can be realized by matching the high-pressure oil pump and the high-pressure air pump with each pipeline and valve. In special road conditions, if left side vehicle body is inclined, high-pressure gas can be respectively added to the left side suspension pipeline A1 through a switch communicated with the control valve A and the left side suspension pipeline A1, so that a piston in the left side suspension pipeline A1 descends, and the inclination of the vehicle body caused by uneven road is improved. The right side vehicle body is adjusted in the same way.
Preferably, in the left side suspension line A1 and the right side suspension line A2 of embodiments 2-4, the sixth control valve 503 and the seventh electric control valve 601 are designed by connecting lines of the front and rear high pressure gas tanks of the left side suspension line A1 and the right side suspension line A2, and the sixth control valve 503 and the seventh electric control valve 601 are closed at the time of emergency braking to reduce the excessive vehicle hunting phenomenon, and the vehicle is kept in a normally open state during normal running, and the sixth control valve 503 and the seventh electric control valve 601 can also be manually closed for special cases such as slopes having an upward and downward gradient of 10 ° or more.
Example 5
The shock absorbing suspension system based on the previous embodiments 1-4, further comprising a method of using the shock absorbing suspension system, comprising:
Step S10, opening a first electric control valve 301 and closing a fourth electric control valve, and starting a high-pressure air pump 70 to supply air to a front suspension hydraulic cylinder 10 and a rear suspension hydraulic cylinder 20 respectively to enable a first piston 101 and a second piston 201 to move downwards, wherein the first piston 101 discharges hydraulic oil and high-pressure air in a first piston lower chamber 103 to a first oil return pressure tank 402, and the second piston 201 discharges hydraulic oil and high-pressure air in a second piston lower chamber 203 to a second oil return pressure tank 405;
Step S20, closing the first electronic control valve 301;
Step S3, opening a second electric control valve 403 and a third electric control valve 404, and starting a high-pressure oil pump 80 to respectively pressurize a first oil return pressure tank 402 and a second oil return pressure tank 405 so as to enable the first piston 101 and the second piston 201 to move upwards, wherein hydraulic oil in the first oil return pressure tank 402 and the second oil return pressure tank 405 respectively flows to a first lower piston chamber 103 and a second lower piston chamber 203, and the first lower piston chamber 103 and the second lower piston chamber 203 are ensured to be full of hydraulic oil;
Step S40, the second electrically controlled valve 403 and the third electrically controlled valve 404 are closed.
By the use method of the embodiment, high-pressure gas in the first piston lower chamber 103 and the second piston lower chamber 203 can be discharged before loading cargoes or running a vehicle, so that the first piston lower chamber 103 and the second piston lower chamber 203 are ensured to be filled with hydraulic oil, the front suspension hydraulic cylinder 10 and the rear suspension hydraulic cylinder 20 have better bearing capacity, and the problem of unbalanced bearing capacity between the front suspension hydraulic cylinder 10 and the rear suspension hydraulic cylinder 20 caused by high-pressure gas is solved.
In one application scenario of the embodiment, the first oil return pressure tank 402 and the second oil return pressure tank 405 are both provided with pressure relief valves, and when the internal pressure is too high, part of the high-pressure gas can be discharged through the pressure relief valves, so that the normal functions of the first oil return pressure tank 402 and the second oil return pressure tank 405 are ensured. The plurality of electric control valves in the damping suspension system are kept in a normally closed state, and are opened at corresponding positions only when the vehicle runs at a low speed and the damping effect of the vehicle needs to be improved or the load capacity of the vehicle needs to be adjusted, and the sixth electric control valve 503 and the seventh electric control valve 601 are closed when the vehicle runs at a high speed (such as the running speed of 40km/h and above), so that the vehicle is prevented from tilting forward (vehicle nodding) due to sudden braking when the vehicle runs at the high speed, and the damage to the vehicle head is avoided.
In an embodiment, the method further comprises detecting the pressure and the hydraulic oil level in the front suspension cylinder 10 and the rear suspension cylinder 20 through the first sensor group, detecting the load balance of the vehicle through the second sensor group, and adjusting the posture or the height of the vehicle and the height of the vehicle body to which the current damping suspension system is applied based on the detection data of the first sensor group and the second sensor group. For example, before the vehicle starts, the hydraulic oil levels in the front suspension cylinder 10 and the rear suspension cylinder 20 are detected by the first sensor group, when the hydraulic oil levels in the first piston lower chamber 103 and the second piston lower chamber 203 are low, the hydraulic oil in the first piston lower chamber 103 and the second piston lower chamber 203 is ensured to be in a full state by starting the corresponding electric control valve and the high pressure air pump 70 and the high pressure oil pump 80, and after confirming that the hydraulic oil is in a full state, the load of the vehicle is detected by the second sensor group, and the vehicle body height or the vehicle posture is adaptively adjusted by the application method of the shock absorbing suspension system of the foregoing embodiments 1 to 4.
In this embodiment, the first sensor group includes at least a plurality of pressure sensors and a plurality of liquid level sensors, the plurality of pressure sensors and the plurality of liquid level sensors are respectively disposed in the chambers of the front suspension cylinder 10, the rear suspension cylinder 20, the first return pressure tank 402 and the second return pressure tank 405, and the second sensor group includes at least an acceleration sensor, a speed sensor and a height sensor, and the acceleration sensor, the speed sensor and the height sensor are symmetrically disposed in the front-rear or left-right direction of the vehicle.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. A shock absorbing suspension system comprising:
a front suspension hydraulic cylinder (10) provided with a first piston (101), wherein a first piston upper chamber (102) and a first piston lower chamber (103) are formed in the front suspension hydraulic cylinder (10) by the first piston (101);
A rear suspension cylinder (20) provided with a second piston (201), wherein a second piston upper chamber (202) and a second piston lower chamber (203) are formed in the rear suspension cylinder (20) by the second piston (201);
a first pipeline (30) communicated with the first electric control valve (301);
The second pipeline (40) is communicated with the first damping adjustment valve (401), the second electric control valve (403), the third electric control valve (404) and the second damping adjustment valve (406), the second pipeline (40) is provided with a first oil return pressure tank (402), the first oil return pressure tank (402) is respectively communicated with the first damping adjustment valve (401) and the second electric control valve (403), the second pipeline (40) is provided with a second oil return pressure tank (405), the second oil return pressure tank (405) is respectively communicated with the third electric control valve (404) and the second damping adjustment valve (406), and the second oil return pressure tank (405) is communicated with the second lower piston chamber (203);
A third pipeline (50) is communicated with a fourth electric control valve (501) and a fifth electric control valve (502), and the third pipeline (50) is provided with a fourth pipeline (60) which is communicated with each other;
The high-pressure air pump (70) is respectively communicated with the third pipeline (50) and the fourth pipeline (60);
And the high-pressure oil pump (80) is respectively communicated with the third pipeline (50) and the second pipeline (40).
2. A shock absorbing suspension system according to claim 1, wherein the high pressure air pump (70) is provided with a sixth electrically controlled valve (503) and a seventh electrically controlled valve (601) on the pipelines communicating with the first oil return pressure tank (402) and the second oil return pressure tank (405), respectively;
The second (403), third (404) and fifth (502) electrically controlled valves are kept in a normally closed state for the high pressure air pump (70) to operate and provide high pressure air to the first (402) or second (405) return pressure tank when the sixth (503) and seventh (601) electrically controlled valves are opened.
3. A shock absorbing suspension system according to claim 2, characterized in that a second electrically controlled valve (403), a third electrically controlled valve (404) are arranged on the pipe end of the second pipe (40) connecting the first oil return pressure tank (402) with the second oil return pressure tank (405), and the second electrically controlled valve (403), the third electrically controlled valve (404) is used for controlling the connection and disconnection between the first piston lower chamber (103) and the second piston lower chamber (203);
the second electric control valve (403) and the third electric control valve (404) are kept in a normally open state.
4. A shock absorbing suspension system according to claim 3, wherein the third conduit (50) is connected between the high pressure oil pump (80) and the second conduit (40), the third conduit (50) being provided with a fourth electrically controlled valve (501);
The fourth electrically controlled valve (501) is kept in a normally closed state.
5. The shock absorbing suspension system according to claim 4, wherein a first damping adjustment valve (401) and a second damping adjustment valve (406) are arranged in a pipeline for communicating the first piston lower chamber (103) with the second piston (201), the first damping adjustment valve (401) is communicated with the first piston lower chamber (103), and the second damping adjustment valve (406) is communicated with the second piston lower chamber (203).
6. A shock absorbing suspension system according to claim 1, wherein a first electrically controlled valve (301) is arranged in the line connecting the first piston upper chamber (102) with the second piston upper chamber (202), and the first line (30) is connected between a fourth electrically controlled valve (501) and a fifth electrically controlled valve (502) on the third line (50).
7. A shock absorbing suspension system according to claim 1, wherein the input of the high pressure oil pump (80) is connected to the output of a hydraulic oil storage tank.
8. A shock absorbing suspension system according to claim 1, wherein the third conduit (50) is in communication with the first conduit (30), the second conduit (40) and the fourth conduit (60).
9. A shock absorbing suspension system according to claim 1, wherein the top of the first (402) and second (405) return pressure tanks are each provided with an inlet and outlet valve, and the high pressure air pump (70) delivers high pressure air from the top of the first (402) or second (405) return pressure tanks through the inlet and outlet valves.
10. The vehicle suspension device is characterized by comprising a frame and a damping suspension system, wherein the damping suspension system is arranged on the frame, and piston push rods in the damping suspension system are respectively connected with front and rear wheels;
A shock absorbing suspension system according to any one of claims 1-9, wherein said shock absorbing suspension system is adapted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202421292527.1U CN222496001U (en) | 2024-06-06 | 2024-06-06 | A shock absorbing suspension system and a vehicle suspension device |
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| CN202421292527.1U CN222496001U (en) | 2024-06-06 | 2024-06-06 | A shock absorbing suspension system and a vehicle suspension device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025252199A1 (en) * | 2024-06-06 | 2025-12-11 | 宁夏腾艺西杰商贸有限公司 | Vehicle suspension shock absorption system and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025252199A1 (en) * | 2024-06-06 | 2025-12-11 | 宁夏腾艺西杰商贸有限公司 | Vehicle suspension shock absorption system and vehicle |
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Address after: 753400 Ningxia Hui Autonomous Region Shizuishan City Datoukou District Chaoyang West Street 346-2 No. Patentee after: Ningxia Zhirong Technology Co., Ltd. Country or region after: China Address before: 753000, No. 346-2 Chaoyang West Street, Dawukou District, Shizuishan City, Ningxia Hui Autonomous Region Patentee before: NINGXIA TENGYI XIJIE BUSINESS CO.,LTD. Country or region before: China |
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