Piston cylinder body and vehicle suspension device

Abstract

The utility model provides a piston cylinder body and a vehicle suspension device, comprising: a front suspension lifting component comprising a first cylinder body and a first piston, the first piston forming a first air chamber and a first oil chamber in the first cylinder body; the first high-pressure gas storage tank is communicated with the first gas cavity through a first connecting pipe; the rear suspension lifting component comprises a second cylinder body and a second piston, and the second piston enables a second air cavity and a second oil cavity to be formed in the second cylinder body; the second high-pressure gas storage tank is communicated with the second gas cavity through a second connecting pipe; the first high-pressure gas storage tank and the second high-pressure gas storage tank are communicated with the high-pressure gas pump through a first pipeline and a first communicating pipeline, the first pipeline is provided with a second valve, and the first communicating pipeline is provided with a first valve. Buffering and damping effects of the left suspension and the right suspension can be adjusted so as to meet requirements of different road conditions, and driving experience of users can be improved.

Description

TECHNICAL FIELD

[0001] The utility model embodiment relates to vehicle suspension technical field, especially a piston cylinder and vehicle suspension device. BACKGROUND

[0002] In the related art, the suspension system of a vehicle usually adopts a spring or a hydraulic component to realize the buffering and damping effect, but the damping and buffering mode of the spring or the hydraulic component is relatively single, the control mode is relatively rigid, and the flexibility is poor, so that the experience of passengers in the vehicle during driving is poor, especially on a bumpy road, the passengers have no experience at all, which is not conducive to improving the overall quality of the vehicle. UTILITARY MODEL CONTENT

[0003] The utility model embodiment provides a vehicle suspension device to solve the above problems of the vehicle suspension device.

[0004] In order to solve the above technical problems, the utility model is realized as follows:

[0005] The utility model embodiment provides a piston cylinder, which comprises:

[0006] An inner cylinder is internally provided with a first oil inlet and outlet and a second oil inlet and outlet, the first oil inlet and outlet is located at the top of the inner cylinder, and the second oil inlet and outlet is located at the side wall of the inner cylinder close to the bottom side; a piston push rod is slidably connected at the piston end in the inner cylinder, and the inner cylinder is formed with a first piston air chamber and a second piston air chamber, the first piston air chamber is communicated with the first oil inlet and outlet, and the second piston air chamber is communicated with the second oil inlet and outlet; an outer cylinder is sleeved outside the inner cylinder, and the gap between the outer cylinder and the inner cylinder forms an annular interlayer.

[0007] The top of the inner cylinder is provided with an upper chamber oil pipe, the top of the outer cylinder is provided with a lower chamber oil pipe, the upper chamber oil pipe is communicated with the first oil inlet and outlet, and the lower chamber oil pipe is communicated with the second oil inlet and outlet through the annular interlayer; the upper chamber oil pipe and the lower chamber oil pipe are both higher than the top of the inner cylinder.

[0008] The utility model discloses an embodiment provides a kind of vehicle suspension device, when left and right direction damping device is parallel, comprising: front suspension lifting and lowering component, including first cylinder and first piston, part of the first piston is located in the first cylinder, and first gas cavity and first oil cavity are formed in the first cylinder;First high-pressure gas tank, the first high-pressure gas tank is communicated with the first gas cavity by first connecting pipe;Rear suspension lifting and lowering component, including second cylinder and second piston, part of the second piston is located in the second cylinder, and second gas cavity and second oil cavity are formed in the second cylinder, wherein the second piston and the first piston are used to connect wheel;Second high-pressure gas tank, the second high-pressure gas tank is communicated with the second gas cavity by second connecting pipe;Two first pipelines, the first pipeline is communicated with one of the first high-pressure gas tank and one of the second high-pressure gas tank respectively, and the first pipeline is respectively equipped with second valve;First communication pipeline, the first pipeline is communicated by the first communication pipeline, and the first communication pipeline is provided with first valve, and the side of the first communication pipeline is equipped with the high-pressure gas pump of intercommunication;

[0009] First sensor group, be provided in the front suspension lifting and lowering component and the rear suspension lifting and lowering component, for detecting the pressure and hydraulic oil level in front suspension lifting and lowering component and rear suspension lifting and lowering component;

[0010] Wherein, the front suspension lifting and lowering component and the rear suspension lifting and lowering component are the structure of piston cylinder as described in the above scheme.

[0011] The utility model further sets up, two first pipeline parallel arrangement.

[0012] The utility model further sets up, and the second valve is located at the side of the first communication pipeline and first pipeline intercommunication.

[0013] The utility model further sets up, and the first valve is located at the side of the first communication pipeline and the high-pressure gas pump intercommunication.

[0014] The utility model further sets up, and the vehicle suspension device further includes: second communication pipeline, the second communication pipeline is communicated with first oil cavity and second oil cavity, and the side of the second communication pipeline is equipped with the high-pressure oil pump of intercommunication.

[0015] The utility model further sets up, and the second communication pipeline is equipped with first regulating valve, and the first regulating valve is provided with four.

[0016] The utility model further sets up, and four regulating valves are located at the side of the first cylinder and the second cylinder and the second communication pipeline intercommunication.

[0017] The utility model further sets up, and the fourth valve is electric control valve or manual valve.

[0018] The utility model further provides for, the outside of front suspension lifting and lowering part and rear suspension lifting and lowering part is provided with elastic element, the elastic element is spiral spring or air spring or torsion bar spring or leaf spring in any one.

[0019] As described above, the utility model has the beneficial effects that:

[0020] Compared with the prior art, in the embodiment of the utility model, the first valve and the second valve can control the first pipeline to communicate the first high-pressure gas tank and the second high-pressure gas tank, the high-pressure gas pump can pass the first pipeline to pass high-pressure gas into the first high-pressure gas tank and the second high-pressure gas tank, and after passing in the high-pressure gas required, the first valve and the second valve can be closed, so that the first gas cavity and the second gas cavity are filled with high-pressure gas, so that the first piston can support the wheels downward relative to the first cylinder body, and the second piston can support the wheels downward relative to the second cylinder body, and the second pipeline and the third valve can ensure that the gas pressure of the first high-pressure gas tank and the second high-pressure gas tank is balanced, thereby improving the balance of the buffering and damping effect, and it can be seen that the first valve, the second valve and the high-pressure gas pump can flexibly adjust the gas pressure value of the high-pressure gas in the first gas cavity and the second gas cavity, so that the buffering and damping effect of the left and right four suspensions can be adjusted to meet the needs of different road conditions, which is beneficial to improve the user driving experience and improve the overall vehicle quality.

[0021] Secondly, the first cylinder body and the second cylinder body are communicated through the first high-pressure gas tank, the first pipeline and the second high-pressure gas tank, which can reduce the angular vibration of the vehicle body when the vehicle encounters bad road conditions, and when the front wheel moves upward violently when encountering an obstacle, the first piston can pass through the first pipeline to transmit part of the pressure to the second piston of the second cylinder body to make the rear part of the vehicle body rise at the same time. The front of the vehicle in the prior art will be higher when encountering this situation, and the rear suspension will not change. When the rear wheel encounters an obstacle, the rear part of the vehicle body rises very high, and the front part of the vehicle body is relatively unchanged. Moreover, when the front and rear wheels encounter obstacles at the same time, the vibration directions of the front and rear wheels are opposite, and the passage formed by the first high-pressure gas tank, the first pipeline and the second high-pressure gas tank can balance the pressure generated by the upward and downward movements of the first piston and the second piston, and the vehicle body can remain horizontal. However, the prior art will produce angular vibration, that is, the front will rise and fall repeatedly. BRIEF DESCRIPTION OF DRAWINGS

[0022] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are included only to illustrate the preferred embodiments and are not to be considered as limiting of the utility model. Moreover, like reference numerals are used to designate like parts throughout the various figures. In the drawings:

[0023] Figure 1A structure schematic view of a vehicle suspension device in the embodiment of the present utility model;

[0024] Figure 2 A structure schematic view of a piston cylinder in the embodiment of the present utility model, wherein the upper chamber oil pipe and the lower chamber oil pipe are arranged on the same side of the top of the piston cylinder;

[0025] Figure 3 A left-right direction parallel damping scheme schematic view in the embodiment 2 of the present utility model;

[0026] Figure 4 A three-bridge suspension scheme schematic view in the embodiment 3 of the present utility model;

[0027] Figure 5 A four-bridge suspension scheme schematic view in the embodiment 4 of the present utility model.

[0028] In the drawing: 100, vehicle suspension device; 10, front suspension lifting and lowering part; 101, first cylinder; 101a, first air cavity; 101b, first oil cavity; 102, first piston; 20, first high-pressure gas storage tank; 201, first connecting pipe; 30, rear suspension lifting and lowering part; 301, second cylinder; 301a, second air cavity; 301b, second oil cavity; 302, second piston; 40, second high-pressure gas storage tank; 401, second connecting pipe; 50, first pipeline; 501, high-pressure gas pump; 502, first valve; 503, second valve; 504, first communication pipeline; 60, second pipeline; 601, third valve; 70, third pipeline; 701, hydraulic oil storage tank; 702, first regulating valve; 703, second regulating valve; 80, fourth pipeline; 801, fourth valve; 802, third regulating valve; 90, fifth pipeline; 901, fifth valve; 902, high-pressure oil pump; 903, second communication pipeline.

[0029] Figure 2 In the drawing: 200, piston cylinder; 210, inner cylinder; 211, first in-out oil port; 212, second in-out oil port; 213, first piston air chamber; 214, second piston air chamber; 220, piston push rod; 230, outer cylinder; 231, upper chamber oil pipe; 232, lower chamber oil pipe. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present utility model.

[0031] Embodiment 1

[0032] Please refer to Figures 1-2 The utility model embodiment provides a vehicle suspension device 100.

[0033] The utility model embodiment provides a vehicle suspension device 100, when unilateral damping device is parallel, it includes: front suspension lifting and lowering part 10, first high pressure gas holder 20, rear suspension lifting and lowering part 30, second high pressure gas holder 40, first pipe line 50, second pipe line 60, front suspension lifting and lowering part 10 includes first cylinder body 101 and first piston 102, and the part of first piston 102 is located in first cylinder body 101, and makes the first gas cavity 101a and first oil cavity 101b in first cylinder body 101 are formed;First high pressure gas holder 20 is connected with first gas cavity 101a through first connecting pipe 201;Rear suspension lifting and lowering part 30 includes second cylinder body 301 and second piston 302, and the part of second piston 302 is located in second cylinder body 301, and makes the second gas cavity 301a and second oil cavity 301b in second cylinder body 301 are formed, wherein, second piston 302 and first piston 102 are used to connect the wheel;Second high pressure gas holder 40 is connected with second gas cavity 301a through second connecting pipe 401;First pipe line 50 connects first high pressure gas holder 20 and second high pressure gas holder 40, and first pipe line 50 is equipped with high pressure gas pump 501 and first valve 502 and second valve 503 located high pressure gas pump 501 both sides;Second pipe line 60 connects first high pressure gas holder 20 and second high pressure gas holder 40, and second pipe line 60 is equipped with third valve 601.

[0034] In the above technical scheme, first cylinder body 101 and second cylinder body 301 can be used to connect the frame, first piston 102 and second piston 302 can be used to connect the front and rear wheels, first valve 502 and second valve 503 can control first pipe line 50 to connect first high pressure gas holder 20 and second high pressure gas holder 40, high pressure gas pump 501 can pass through first pipe line 50 and import high pressure gas into first high pressure gas holder 20 and second high pressure gas holder 40, and can close first valve 502 and second valve 503 after importing the high pressure gas of set requirement, make first gas cavity 101a and second gas cavity 301a fill with high pressure gas, so that first piston 102 can support the wheel downward relative to first cylinder body 101, and second piston 302 can support the wheel downward relative to second cylinder body 301, and second pipe line 60 and third valve 601 can guarantee the pressure balance of first high pressure gas holder 20 and second high pressure gas holder 40, thereby improving the balance of buffer damping effect, it can be seen that through the above scheme, first valve 502, second valve 503 and high pressure gas pump 501 can flexibly adjust the pressure value of high pressure gas in first gas cavity 101a and second gas cavity 301a, thereby adjusting the buffer damping effect of suspension, to meet the demand of different road conditions, it is favorable to promote user driving experience and improve the overall vehicle quality.

[0035] Secondly, the first cylinder body 101 and the second cylinder body 301 are communicated through the first high-pressure gas tank 20, the first pipeline 50 and the second high-pressure gas tank 40, so that the angular vibration of the vehicle body when the vehicle encounters bad road conditions can be reduced, and when the front wheel encounters an obstacle and moves upward violently, the first piston 102 can pass through the first pipeline 50 to transmit part of the pressure to the second piston 302 of the second cylinder body 301 to make the rear part of the vehicle body rise at the same time. The front of the vehicle in the prior art will be higher when the rear wheel encounters an obstacle, and the rear suspension does not change. When the rear wheel encounters an obstacle, the rear part of the vehicle body rises very high, and the front part of the vehicle body is relatively unchanged. Moreover, when the front and rear wheels encounter obstacles at the same time, the vibration directions of the front and rear wheels are opposite, and the passage formed by the first high-pressure gas tank 20, the first pipeline 50 and the second high-pressure gas tank 40 can balance the pressure generated by the upward and downward movements of the first piston 102 and the second piston 302, so that the vehicle body can remain in a horizontal state, and the prior art will produce angular vibration, that is, the front part of the vehicle will move up and down repeatedly.

[0036] In addition, by arranging the third valve 601 in the second pipeline 60, the third valve 601 can also be used to cut off the oil way through the brake signal switch of the brake pedal when the vehicle is braked in an emergency at a high speed, so that the over-nodding phenomenon of the pressure in the first cylinder body 101 to the second cylinder body 301 through the pipeline is prevented, and the third valve 601 can also be manually closed in special cases.

[0037] The utility model further sets up, first valve 502 and second valve 503 keep closing, third valve 601 keep opening. In this technical scheme, first valve 502 and second valve 503 keep closing, to guarantee that high-pressure gas pump 501 can not pass into high-pressure gas in first high-pressure gas tank 20 and second high-pressure gas tank 40, only open first valve 502 and second valve 503 when needing, make high-pressure gas pump 501 pass into high-pressure gas in first high-pressure gas tank 20 and second high-pressure gas tank 40, first valve 502 and second valve 503 are electric control valve. In this technical scheme, first valve 502 and second valve 503 are electric control valve and can realize electric control, convenient operation and can realize remote operation, and it is favorable to automatic regulation, and third valve 601 is electric control valve or manual valve. In special cases, third valve 601 can be closed to increase the pressure of the rear suspension alone to improve the load capacity.

[0038] The utility model further sets up, for example, Figure 1As shown, the vehicle suspension device 100 further comprises a third pipeline 70, the third pipeline 70 is communicated with the first oil cavity 101b and the second oil cavity 301b, and the third pipeline 70 is provided with a hydraulic oil reservoir 701. In the technical scheme, the hydraulic oil reservoir 701 can inject hydraulic oil into the first oil cavity 101b and the second oil cavity 301b through the third pipeline 70, at this time, the upper part of the first cylinder body 101 is a gas cavity, and the lower part is an oil cavity, and the upper part of the second cylinder body 301 is also a gas cavity, and the lower part is also an oil cavity, that is, the front suspension lifting and lowering part 10 and the rear suspension lifting and lowering part 30 can form an oil gas spring, and the lower oil cavity can play a better buffering effect.

[0039] The utility model further sets up, such as Figure 1 As shown, the third pipeline 70 is provided with a first regulating valve 702 and a second regulating valve 703 located on both sides of the hydraulic oil reservoir 701.

[0040] In the above technical scheme, when the first piston 102 and the second piston 302 are up due to the impact of the wheel, the pressure of the first gas cavity 101a and the second gas cavity 301a increases, and the gas rebounds to make the first piston 102 and the second piston 302 sharply down, at this time, the liquid pressure of the first oil cavity 101b and the second oil cavity 301b increases simultaneously, the flow of the hydraulic oil is adjusted through the first regulating valve 702 and the second regulating valve 703, so that the hydraulic oil can flow back to the hydraulic oil reservoir 701, thereby making the first piston 102 and the second piston 302 slowly down, and playing a better damping effect.

[0041] The utility model further sets up, such as Figure 1 As shown, the vehicle suspension device 100 further comprises a fourth pipeline 80, the fourth pipeline 80 is connected in parallel with the third pipeline 70, and the hydraulic oil reservoir 701, the first regulating valve 702 and the second regulating valve 703 are located between the two ends of the fourth pipeline 80, and the fourth pipeline 80 is provided with a fourth valve 801 and a third regulating valve 802.

[0042] In the above technical scheme, when the vibration direction of the front and rear wheels is that the first piston 102 is up and the second piston 302 is down, the pressure in the first gas cavity 101a will be supplemented to the second piston 302 through the second pipeline 60 to reduce the pressure reduced by the down of the second piston 302, at this time, since the first high-pressure gas reservoir 20 and the second high-pressure gas reservoir 40 do not release high-pressure potential energy, part of the hydraulic oil in the first oil cavity 101b and the second oil cavity 301b enters the hydraulic oil reservoir 701 through the first regulating valve 702 and the second regulating valve 703, and the other part flows back and forth through the fourth pipeline 80.

[0043] The utility model further sets up, first governing valve 702, second governing valve 703 and third governing valve 802 are electric control valve, in this technical scheme, first governing valve 702, second governing valve 703 and third governing valve 802 are electric control valve and can realize electric control, convenient operation and can realize remote operation, be favorable to automatic regulation.

[0044] The utility model further sets up, fourth valve 801 is electric control valve or manual valve.

[0045] The utility model further sets up, vehicle suspension device 100 still includes: fifth pipeline 90, fifth pipeline 90 links to second pipeline 60 and third pipeline 70, fifth pipeline 90 is equipped with fifth valve 901 and high pressure oil pump 902, third valve 601 is located between first high pressure gas holder 20 and fifth pipeline 90, and second governing valve 703 is located at the side of fifth pipeline 90 away from hydraulic oil storage tank 701.

[0046] In this technical scheme, the role of high pressure oil pump 902 is that the hydraulic oil of hydraulic oil storage tank 701 can be delivered to first high pressure gas holder 20 and second high pressure gas holder 40, and the pressure is increased to make first piston 102 and second piston 302 descend to lift the chassis height, and vice versa to reduce the chassis height on the highway.

[0047] The utility model further sets up, first piston 102 and second piston 302 can be sleeved with damping spring, in this technical scheme, by the damping spring of first piston 102 and second piston 302 on the sleeve setting can further promote the buffering and damping performance, and promote the passenger's riding experience.

[0048] The utility model further sets up, the outside of front suspension lifting and lowering part 10 and rear suspension lifting and lowering part 30 is provided with elastic element, and the elastic element is any one in spiral spring or air spring or torsion bar spring or leaf spring.

[0049] In this technical scheme, the elastic element is used to absorb the impact force caused by uneven road surface, and the compression and rebound of the elastic element can reduce the direct impact of the impact force on the vehicle body; at the same time, the elastic element bears the task of supporting the weight of the entire vehicle body, maintains the balance of the vehicle body, ensures that the wheels maintain appropriate contact with the ground to maintain good traction and braking effect; and by reducing the transmission of direct impact force, the elastic element also helps to protect other components of the vehicle, such as tires, transmission systems, etc.

[0050] Please refer to Figure 2 The utility model embodiment provides a piston cylinder body 200, including:

[0051] An inner cylinder body 210 is internally provided with a first inlet and outlet oil port 211 and a second inlet and outlet oil port 212, the first inlet and outlet oil port 211 is located at the top of the inner cylinder body 210, and the second inlet and outlet oil port 212 is located at the side wall of the inner cylinder body 210 close to the bottom side; a piston push rod 220 is slidably connected at the piston end in the inner cylinder body 210, and the inner cylinder body 210 is formed with a first piston air chamber 213 and a second piston air chamber 214, the first piston air chamber 213 is communicated with the first inlet and outlet oil port 211, and the second piston air chamber 214 is communicated with the second inlet and outlet oil port 212; an outer cylinder body 230 is sleeved outside the inner cylinder body 210, and the gap between the outer cylinder body 230 and the inner cylinder body 210 forms an annular interlayer;

[0052] Wherein, the inner cylinder body 210 is provided with an upper chamber oil pipe 215 at the top, the outer cylinder body 230 is provided with a lower chamber oil pipe 231 at the top, the upper chamber oil pipe 215 is communicated with the first inlet and outlet oil port 211, and the lower chamber oil pipe 231 is communicated with the second inlet and outlet oil port 212 through the annular interlayer; the upper chamber oil pipe 215 and the lower chamber oil pipe 231 are both higher than the top of the inner cylinder body 210.

[0053] In this technical solution, by moving the pipe opening of the second piston air chamber 214 to the upper end, the space outside the piston cylinder can be more effectively utilized. This design allows the spiral spring to be sleeved outside the piston cylinder 200 without being limited by the position of the pipe opening of the second piston air chamber 214. Such a layout makes the structure of the entire suspension system more compact, which helps to save space, especially in the case of limited vehicle chassis space.

[0054] Embodiment 2

[0055] Please refer to Figure 3 The utility model embodiment provides a vehicle suspension device 100.

[0056] When the left and right direction damping devices are connected in parallel, it comprises:

[0057] The front suspension lifting and lowering component 10 comprises a first cylinder body 101 and a first piston 102, part of the first piston 102 is located in the first cylinder body 101, and the first cylinder body 101 is formed with a first air cavity 101a and a first oil cavity 101b;

[0058] The first high-pressure gas storage tank 20 is communicated with the first air cavity 101a through a first connecting pipe 201;

[0059] The rear suspension lifting component 30 comprises a second cylinder body 301 and a second piston 302, part of the second piston 302 is located in the second cylinder body 301, and the second cylinder body 301 is formed with a second gas cavity 301a and a second oil cavity 301b, wherein the second piston 302 and the first piston 102 are used to connect the wheels;

[0060] The second high-pressure gas tank 40 is communicated with the second gas cavity 301a through a second connecting pipe 401;

[0061] Two first pipes 50 are respectively communicated with one of the first high-pressure gas tanks 20 and one of the second high-pressure gas tanks 40, and the first pipes 50 are respectively provided with second valves 503;

[0062] The first connecting pipe 504 is connected with the two first pipes 50, the first connecting pipe 504 is provided with a first valve 502, and one end of the first connecting pipe 504 is provided with a high-pressure gas pump 501;

[0063] The second connecting pipe 903 is communicated with the first oil cavity 101b and the second oil cavity 301b, the second connecting pipe 903 is provided with four first adjusting valves 702, the four adjusting valves are respectively located on one side of the first cylinder body 101 and the second cylinder body 301, and one side of the second connecting pipe 903 is provided with a high-pressure oil pump 902, the high-pressure oil pump 902 is communicated with the first connecting pipe 504, so that the flow of the hydraulic oil in each cylinder body can be adjusted through the first adjusting valve 702;

[0064] The first cylinder body 101 and the second cylinder body 301 can be used to connect the frame, the first piston 102 and the second piston 302 can be used to connect the front and rear wheels, the first valve 502 can control the first connecting pipe 504 to communicate with the first pipe 50, the second valve 503 can control the first pipe 50 to communicate with the first high-pressure gas tank 20 and the second high-pressure gas tank 40, the high-pressure gas pump 501 can introduce high-pressure gas into the first high-pressure gas tank 20 and the second high-pressure gas tank 40 through the first connecting pipe 504 and the first pipe 50, and after the required high-pressure gas is introduced, the first valve 502 and the second valve 503 can be closed, so that the first gas cavity 101a and the second gas cavity 301a are filled with high-pressure gas, so that the first piston 102 can support the wheels downward relative to the first cylinder body 101, and the second piston 302 can support the wheels downward relative to the second cylinder body 301, the wheels in the left and right directions can be adjusted, so that the cushioning and damping effect of the four suspensions in the left and right directions can be adjusted to meet the needs of different road conditions, which is beneficial to improve the user driving experience and improve the overall quality of the vehicle.

[0065] Furthermore, the air source can be a high-pressure air tank, and the top of the high-pressure air tank is equipped with an electrically controlled pressure relief valve or a manual pressure relief valve, which is used to release pressure from the high-pressure air tank and reduce the vehicle height; and the top of the hydraulic oil tank 701 is equipped with a filler port, which is used to inject hydraulic oil into the hydraulic oil tank 701 to ensure that there is sufficient hydraulic oil in the hydraulic oil tank for the high-pressure oil pump to deliver to the front suspension lifting component 10 and the rear suspension lifting component 30.

[0066] Example 3

[0067] like Figure 4 As shown, when equipped with a front suspension lifting component 10, a front suspension lifting component 30, a piston cylinder 200, four first high-pressure air tanks 20, a second high-pressure air tank 40, a hydraulic oil tank 701, and an air source, a three-axle suspension effect with three wheels on one side and six wheels in total can be achieved through the high-pressure oil pump 902 and the high-pressure air pump 501 in conjunction with various pipelines and valves A and B. In adverse road conditions, opening valves A and B reduces the amplitude of the vehicle body's left and right sway; closing valves A and B during normal high-speed driving reduces excessive body roll during high-speed cornering; valves A and B can also be used to inflate the left piston cylinder 200 or the right piston cylinder 200 to adjust the left and right balance of the vehicle body.

[0068] Example 4

[0069] like Figure 5 As shown, when equipped with four front suspension lifting components 30, four piston cylinders 200, a first high-pressure air tank 20, a second high-pressure air tank 40, a hydraulic oil tank 701, and an air source, the four-axle suspension effect (eight wheels in total, four wheels on one side) can be achieved through the high-pressure oil pump 902 and the high-pressure air pump 501 in conjunction with various pipelines and valves A and B. In adverse road conditions, opening valves A and B reduces the amplitude of the vehicle's left and right sway; closing valves A and B during normal high-speed driving reduces excessive body roll during high-speed cornering; valves A and B can also be used to inflate the left or right piston cylinder 200 to adjust the left and right balance of the vehicle.

[0070] Example 5

[0071] The vehicle suspension device based on the aforementioned embodiments 1-4 further includes: detecting the pressure and hydraulic oil level in the front suspension lifting component 10 and the rear suspension lifting component 30 through a first sensor group (not shown); detecting the load balance of the vehicle through a second sensor group (not shown); and adjusting the attitude or vehicle height of the vehicle with the current shock absorption suspension system based on the detection data of the first sensor group and the second sensor group.

[0072] For example, before the vehicle starts, the hydraulic oil level in the front suspension lifting and lowering component 10 and the rear suspension lifting and lowering component 30 is detected by the first sensor group, when the hydraulic oil level of the first oil cavity 101b and the second oil cavity 301b is low, the corresponding electric control valve and the high-pressure gas pump 501 and the high-pressure oil pump 902 are started to ensure that the hydraulic oil of the first oil cavity 101b and the second oil cavity 301b is in a full state; 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 vehicle posture is adaptively adjusted by the application method of the vehicle suspension device in the foregoing embodiments 1-4.

[0073] In the embodiment, the first sensor group at least includes a plurality of pressure sensors and a plurality of liquid level sensors, and the plurality of pressure sensors and the plurality of liquid level sensors are respectively arranged in the cavities of the front suspension lifting and lowering component 10, the rear suspension lifting and lowering component 30, the first high-pressure gas tank 20 and the second high-pressure gas tank 40; the second sensor group at least includes an acceleration sensor, a speed sensor and a height sensor, and the acceleration sensor, the speed sensor and the height sensor are symmetrically arranged in the front-rear or left-right direction of the vehicle.

[0074] In one application scenario of the embodiment, the first high-pressure gas tank 20 and the second high-pressure gas tank 40 are both provided with a pressure relief valve, which can discharge part of the high-pressure gas when the internal pressure is too high, so as to ensure the normal function of the first high-pressure gas tank 20 and the second high-pressure gas tank 40.

[0075] The embodiments of the utility model are described above in combination with the drawings, but the utility model is not limited to the specific embodiments described above, and the specific embodiments described above are only illustrative but not restrictive, and those skilled in the art can make many forms under the inspiration of the utility model without departing from the purpose of the utility model and the scope protected by the claims, which all belong to the protection of the utility model.

Claims

1. A piston-cylinder, characterized in that, It comprises: The inner cylinder is internally provided with a first inlet and outlet port and a second inlet and outlet port, the first inlet and outlet port is located at the top of the inner cylinder, and the second inlet and outlet port is located at the side wall of the inner cylinder near the bottom; The piston push rod is slidably connected at the piston end in the inner cylinder, and the inner cylinder is formed with a first piston gas chamber and a second piston gas chamber, the first piston gas chamber is communicated with the first inlet and outlet port, and the second piston gas chamber is communicated with the second inlet and outlet port; The outer cylinder is sleeved outside the inner cylinder, and the gap between the outer cylinder and the inner cylinder forms an annular interlayer; The top of the inner cylinder is provided with an upper chamber oil pipe, the top of the outer cylinder is provided with a lower chamber oil pipe, the upper chamber oil pipe is communicated with the first inlet and outlet port, the lower chamber oil pipe is communicated with the second inlet and outlet port through the annular interlayer, and the upper chamber oil pipe and the lower chamber oil pipe are higher than the top of the inner cylinder.

2. A vehicle suspension arrangement characterised in that, When the left and right direction damping devices are connected in parallel, it comprises: The front suspension lifting component comprises a first cylinder and a first piston, part of the first piston is located in the first cylinder, and the first cylinder is formed with a first gas cavity and a first oil cavity; The first high-pressure gas tank is communicated with the first gas cavity through a first connecting pipe; The rear suspension lifting component comprises a second cylinder and a second piston, part of the second piston is located in the second cylinder, and the second cylinder is formed with a second gas cavity and a second oil cavity, wherein the second piston and the first piston are used to connect the wheels; The second high-pressure gas tank is communicated with the second gas cavity through a second connecting pipe; The first pipeline is respectively communicated with one of the first high-pressure gas tank and one of the second high-pressure gas tank, and the first pipeline is respectively provided with a second valve; The first connecting pipeline is connected in parallel through the first connecting pipeline, the first connecting pipeline is provided with a first valve, and one side of the first connecting pipeline is provided with a high-pressure gas pump connected in parallel; The first sensor group is arranged in the front suspension lifting component and the rear suspension lifting component, and is used for detecting the pressure and hydraulic oil level in the front suspension lifting component and the rear suspension lifting component; The front suspension lifting component and the rear suspension lifting component are the structure of the piston cylinder as claimed in claim 1.

3. A vehicle suspension arrangement according to claim 2, wherein The two first pipelines are arranged in parallel.

4. A vehicle suspension arrangement according to claim 2, wherein The second valve is respectively located at one side of the communication position between the first connecting pipeline and the first pipeline.

5. A vehicle suspension arrangement according to claim 2, wherein The first valve is respectively located at one side of the communication position between the first connecting pipeline and the high-pressure gas pump.

6. A vehicle suspension arrangement according to claim 2, wherein The vehicle suspension device further comprises a second connecting pipeline, the second connecting pipeline is communicated with the first oil cavity and the second oil cavity, and one side of the second connecting pipeline is provided with a high-pressure oil pump connected in parallel.

7. A vehicle suspension arrangement according to claim 6, wherein The second connecting pipeline is provided with a first regulating valve, and the first regulating valve is provided with four.

8. A vehicle suspension arrangement according to claim 7, characterised in that The four regulating valves are respectively located at one side of the communication position between the first cylinder, the second cylinder and the second connecting pipeline.

9. A vehicle suspension arrangement according to claim 8, wherein The vehicle suspension device further comprises a fourth pipeline connected in parallel with the third pipeline, and the hydraulic oil tank, the first regulating valve and the second regulating valve are located between two ends of the fourth pipeline, and the fourth pipeline is provided with a fourth valve and a third regulating valve.

10. A vehicle suspension arrangement according to any one of claims 2 to 9, wherein The front suspension lifting and lowering component and the rear suspension lifting and lowering component are externally provided with elastic elements, which are any one of a coil spring, an air spring, a torsion bar spring or a steel plate spring.

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