Hydraulic spring type damping device for vehicle and vehicle
Through the hydraulic spring-type shock absorber, the recycling of high-pressure gas and hydraulic oil, combined with adjustable damping valve and solenoid valve control, the flexibility and environmental protection of the vehicle shock absorber are solved, the vehicle's stability and passenger comfort are improved, and the gas emissions are reduced.
Patent Information
- Application Number
- CN202422365348.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The existing vehicle shock absorbing devices lack flexibility during driving, resulting in low passenger comfort, poor vehicle stability, and gas pressure relief causes pollution to the environment.
The hydraulic spring-type shock absorbing device is adopted, and the vehicle's shock absorption and stability adjustment are achieved through the recycling of high-pressure gas and hydraulic oil, combined with adjustable damping valves and solenoid valves, and the vehicle's shock absorption and stability adjustment are achieved, efficient use of high-pressure gases and reduce harmful gas emissions.
It improves the stability of the vehicle on uneven roads and passenger comfort, reduces the emission of harmful gases, and achieves energy-saving and environmentally friendly shock absorption effects.
Smart Images
Figure CN223089870U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of vehicle shock absorption, and particularly relates to a hydraulic spring shock absorption device for a vehicle and a vehicle. Background Art
[0002] During the driving process of a vehicle, due to various factors such as the unevenness of the road surface, the vibration of the vehicle is excited. This kind of impact and vibration caused by the unevenness of the road is transmitted to the suspension through the wheels, and then transmitted from the suspension to the vehicle body by the suspension, thus causing the vibration of the driver and the passengers. Of course, it also impacts the goods. In this way, the people or goods in the vehicle are in a vibrating environment, and this kind of vibration greatly reduces the driving smoothness of the vehicle. The vibration affects people's comfort, work efficiency and health.
[0003] In the related art, at present, the shock absorption of automobiles usually uses springs or hydraulic components to provide shock absorption and buffering functions. However, this shock absorption method is relatively single, and the shock absorption adjustment method is quite fixed, lacking sufficient flexibility, resulting in a lower comfort level for passengers when the vehicle is driving. The smoothness of the vehicle is the performance that ensures a certain degree of comfort in the vibrating environment of the occupants during the driving process of the vehicle. For a freight vehicle, it also includes the performance of keeping the goods intact. At the same time, this shock absorption method releases the gas pressure to the atmosphere after controlling the vehicle body balance, which causes great pollution to the environment. Utility Model Content
[0004] This application aims to solve at least one of the technical problems existing in the prior art. For this purpose, this application provides a hydraulic spring shock absorption device for a vehicle and a vehicle, which can shock absorb the vehicle, eliminate the harmful vibrations generated during the operation of the vehicle, ensure driving smoothness, and can continuously recycle high-pressure gas, reduce the emissions of harmful gases, and save energy and protect the environment.
[0005] This application provides a hydraulic spring shock absorption device for a vehicle, including: a first suspension hydraulic cylinder, a first piston body, a first oil return pressure tank, a first gas buffer tank, a high-pressure gas storage tank, a high-pressure air pump, a one-way check valve, a first electromagnetic pressure relief valve, a first electromagnetic control valve, a first transmission pipeline, a second transmission pipeline, a third transmission pipeline and a fourth transmission pipeline;
[0006] The first piston body is arranged inside the first suspension hydraulic cylinder. The first piston body includes a first piston rod and a first top cover. The first top cover abuts against the inner wall of the first suspension hydraulic cylinder and divides the inside of the first suspension hydraulic cylinder into a first gas chamber and a first oil chamber. The first gas chamber is located above the first top cover, and the first oil chamber is located below the first top cover. One end of the first piston rod is connected to the bottom of the first top cover, and the other end of the first piston rod extends out of the bottom of the first suspension hydraulic cylinder;
[0007] The first air chamber is communicated with the first gas buffer tank. One end of the first delivery pipeline is communicated with the first gas buffer tank, and the other end of the first delivery pipeline is communicated with the high-pressure gas storage tank. One end of the second delivery pipeline is communicated with the high-pressure gas storage tank. One end of the third delivery pipeline is communicated with the first gas buffer tank. The other ends of the second delivery pipeline and the third delivery pipeline are both communicated with the first oil return pressure tank through the top of the first oil return pressure tank. One end of the fourth delivery pipeline is communicated with the first oil chamber, and the other end of the fourth delivery pipeline is communicated with the first oil return pressure tank through the bottom of the first oil return pressure tank;
[0008] The high-pressure air pump and the one-way check valve are both arranged on the second delivery pipeline. The one-way check valve is used to control the fluid in the second delivery pipeline to flow from the first oil return pressure tank along the direction of the high-pressure gas storage tank. The first electromagnetic pressure relief valve is arranged on the third delivery pipeline, and the first electromagnetic control valve is arranged on the first delivery pipeline.
[0009] According to some embodiments of the present application, the hydraulic spring type shock absorber for vehicles further includes a first adjustable damping valve, and the first adjustable damping valve is arranged on the fourth delivery pipeline.
[0010] According to some embodiments of the present application, the other end of the first piston rod extends out of the bottom of the first suspension hydraulic cylinder and is connected to an external first vehicle driving wheel.
[0011] According to some embodiments of the present application, the hydraulic spring shock absorber for a vehicle further includes a second suspension hydraulic cylinder, a second piston body, a second oil return pressure tank, a second gas buffer tank, a second electromagnetic pressure relief valve, a second electromagnetic control valve, a fifth pipeline, a sixth pipeline, and a seventh pipeline. The second piston body is disposed inside the second suspension hydraulic cylinder. The second piston body includes a second piston rod and a second top cover. The second top cover abuts against the inner wall of the second suspension hydraulic cylinder and divides the inside of the second suspension hydraulic cylinder into a second gas chamber and a second oil chamber. The second gas chamber is disposed above the second top cover, and the second oil chamber is disposed below the second top cover. One end of the second piston rod is connected to the bottom of the second top cover, and the other end of the second piston rod extends out of the bottom of the second suspension hydraulic cylinder. The second gas chamber communicates with the second gas buffer tank. One end of the first pipeline near the high-pressure gas storage tank also communicates with the second gas buffer tank. The first electromagnetic control valve is disposed between the first gas buffer tank and the high-pressure gas storage tank. The second electromagnetic control valve is also disposed on the first pipeline, and the second electromagnetic control valve is disposed between the second gas buffer tank and the high-pressure gas storage tank. One end of the fifth pipeline communicates with one end of the second pipeline near the high-pressure gas storage tank. One end of the sixth pipeline communicates with the second gas buffer tank. The other ends of the fifth pipeline and the sixth pipeline both communicate with the second oil return pressure tank through the top of the second oil return pressure tank. One end of the seventh pipeline communicates with the second oil chamber. The other end of the seventh pipeline communicates with the second oil return pressure tank through the bottom of the second oil return pressure tank. The high-pressure air pump and the one-way check valve are disposed near the high-pressure gas storage tank. The one-way check valve is used to control the fluid in the fifth pipeline to flow in the direction of the high-pressure gas storage tank from the first oil return pressure tank or the second oil return pressure tank. The second electromagnetic pressure relief valve is disposed on the sixth pipeline.
[0012] According to some embodiments of the present application, the hydraulic spring shock absorber for a vehicle further includes a second adjustable damping valve, and the second adjustable damping valve is disposed on the seventh pipeline.
[0013] According to some embodiments of the present application, the other end of the second piston rod extends out of the bottom of the second suspension hydraulic cylinder and is connected to an external second vehicle driving wheel.
[0014] According to some embodiments of the present application, the hydraulic spring shock absorber for a vehicle further includes an eighth pipeline. One end of the eighth pipeline communicates with the high-pressure gas storage tank, and the other end of the eighth pipeline communicates with the first pipeline. The eighth pipeline is disposed between the first electromagnetic control valve and the second electromagnetic control valve.
[0015] According to some embodiments of the present application, oil injection ports are provided on both the first oil return pressure tank and the second oil return pressure tank.
[0016] A vehicle according to an embodiment of the second aspect of the present application includes a hydraulic spring shock absorber for a vehicle according to the above-mentioned first aspect embodiment of the present application.
[0017] In the present application, when the vehicle is traveling on an uneven road surface and the vehicle body drops at a certain position due to bumps, the first electromagnetic control valve is opened, and high-pressure gas is filled into the first gas buffer tank from the high-pressure gas storage tank. The high-pressure gas is then filled into the first gas chamber from the first gas buffer tank. The high-pressure gas can press down the corresponding first piston body, thereby raising the vehicle body corresponding to the first suspension hydraulic cylinder and achieving a return position; when the vehicle is traveling on an uneven road surface and the vehicle body rises at a certain position due to bumps, the first electromagnetic pressure relief valve is opened, and the high-pressure gas in the first gas chamber is transported to the first oil return pressure tank through the third pipeline, the first gas chamber is depressurized, the corresponding first piston body rises, and then the vehicle body corresponding to the first suspension hydraulic cylinder drops to achieve a return position. The return of the first suspension hydraulic cylinder is achieved by the elastic potential energy after the first gas chamber is depressurized, so that when the vehicle is traveling on an uneven road surface, the smoothness of the vehicle body can be improved, the road feeling of the driver can be effectively improved, the stability of vehicle operation and the comfort of passengers can be improved; when the high-pressure gas in the high-pressure gas storage tank is insufficient, the high-pressure air pump is opened, and the gas in the first oil return pressure tank is pumped into the high-pressure gas storage tank through the high-pressure air pump and the second pipeline to achieve high-pressure gas replenishment. Through this setting, the present application can shock-absorb the vehicle, eliminate the harmful vibrations generated during the operation of the vehicle, ensure driving smoothness, continuously recycle high-pressure gas, reduce harmful gas emissions, and save energy and protect the environment.
[0018] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The additional aspects and advantages of the present application will become apparent and be easily understood in conjunction with the following description of the embodiments with reference to the accompanying drawings, wherein:
[0020] Figure 1 is a schematic structural diagram of a hydraulic spring shock absorber for a vehicle provided by an embodiment of the present application;
[0021] Figure 2 is a schematic structural diagram of a hydraulic spring shock absorber for a vehicle provided by another embodiment of the present application.
[0022] Reference Signs:
[0023] The first suspension hydraulic cylinder 110, the first vehicle driving wheel 111, the first oil return pressure tank 112, the first adjustable damping valve 113, the first piston body 114, the first air chamber 115, the first oil chamber 116, the first gas buffer tank 117, the first electromagnetic control valve 118, the first electromagnetic pressure relief valve 119;
[0024] The second suspension hydraulic cylinder 120, the second vehicle driving wheel 121, the second oil return pressure tank 122, the second adjustable damping valve 123, the second piston body 124, the second air chamber 125, the second oil chamber 126, the second gas buffer tank 127, the second electromagnetic control valve 128, the second electromagnetic pressure relief valve 129;
[0025] The high-pressure gas storage tank 130, the one-way check valve 131, the high-pressure air pump 132;
[0026] The first delivery pipeline 140, the second delivery pipeline 141, the third delivery pipeline 142, the fourth delivery pipeline 143, the fifth delivery pipeline 144, the sixth delivery pipeline 147, the seventh delivery pipeline 148, the eighth delivery pipeline 149. Detailed implementation manners
[0027] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application, and should not be construed as a limitation of the present application.
[0028] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.
[0029] In the description of the present application, if the terms first and second are used only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.
[0030] In the description of the present application, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present application in combination with the specific content of the technical solution.
[0031] During the driving process of a vehicle, vibrations of the vehicle are excited due to numerous factors such as the unevenness of the road surface. This kind of impact and vibration caused by the unevenness of the road is transmitted to the suspension through the wheels, and then transmitted from the suspension to the vehicle body by the suspension, thereby causing vibrations of the driver and passengers. Of course, it also impacts the goods. In this way, people or goods in the vehicle are in a vibrating environment, and this vibration greatly reduces the driving smoothness of the vehicle. The vibration affects people's comfort, work efficiency, and health.
[0032] In the related art, currently, the shock absorption of an automobile usually uses springs or hydraulic components to provide shock absorption and buffering functions. However, this shock absorption method is relatively single, and the shock absorption adjustment method is quite fixed, lacking sufficient flexibility, resulting in a relatively low comfort level for passengers when the vehicle is driving. The driving smoothness of a vehicle is the performance that ensures a certain level of comfort in the vibration environment of the occupants during the driving process. For a cargo vehicle, it also includes the performance of keeping the goods intact. At the same time, this shock absorption method releases the gas pressure to the atmosphere after controlling the vehicle body balance, causing great pollution to the environment.
[0033] To solve the above problems, this application proposes a hydraulic spring shock absorption device for vehicles and a vehicle. The following further elaborates on the embodiments of this application in conjunction with the accompanying drawings.
[0034] Embodiment 1:
[0035] Refer to Figure 1 , Figure 1The hydraulic spring shock absorber for a vehicle provided by the embodiment of the first aspect of the present application is shown, including: a first suspension hydraulic cylinder 110, a first piston body 114, a first oil return pressure tank 112, a first gas buffer tank 117, a high-pressure gas storage tank 130, a high-pressure air pump 132, a one-way check valve 131, a first electromagnetic pressure relief valve 119, a first electromagnetic control valve 118, a first delivery pipeline 140, a second delivery pipeline 141, a third delivery pipeline 142, and a fourth delivery pipeline 143; the first piston body 114 is disposed inside the first suspension hydraulic cylinder 110, the first piston body 114 includes a first piston rod and a first top cover, the first top cover abuts against the inner wall of the first suspension hydraulic cylinder 110 and divides the inside of the first suspension hydraulic cylinder 110 into a first gas chamber 115 and a first oil chamber 116, the first gas chamber 115 is disposed above the first top cover, the first oil chamber 116 is disposed below the first top cover, one end of the first piston rod is connected to the bottom of the first top cover, and the other end of the first piston rod extends out of the bottom of the first suspension hydraulic cylinder 110; the first gas chamber 115 is communicated with the first gas buffer tank 117, one end of the first delivery pipeline 140 is communicated with the first gas buffer tank 117, the other end of the first delivery pipeline 140 is communicated with the high-pressure gas storage tank 130, one end of the second delivery pipeline 141 is communicated with the high-pressure gas storage tank 130, one end of the third delivery pipeline 142 is communicated with the first gas buffer tank 117, and the other ends of the second delivery pipeline 141 and the third delivery pipeline 142 are both communicated with the first oil return pressure tank 112 through the top of the first oil return pressure tank 112, one end of the fourth delivery pipeline 143 is communicated with the first oil chamber 116, and the other end of the fourth delivery pipeline 143 is communicated with the first oil return pressure tank 112 through the bottom of the first oil return pressure tank 112; the high-pressure air pump 132 and the one-way check valve 131 are both disposed on the second delivery pipeline 141, the one-way check valve 131 is used to control the fluid in the second delivery pipeline 141 to flow from the first oil return pressure tank 112 along the direction of the high-pressure gas storage tank 130, the first electromagnetic pressure relief valve 119 is disposed on the third delivery pipeline 142, and the first electromagnetic control valve 118 is disposed on the first delivery pipeline 140.
[0036] In this embodiment, the hydraulic spring shock absorber for a vehicle is mainly used in cooperation with other elastic elements. For example, when the load-bearing capacity of the leaf spring is insufficient, the air pressure in the first gas chamber 115 of the first suspension hydraulic cylinder 110 is increased to lift or jack up the vehicle body. When the vehicle is unloaded, the high-pressure gas in the first gas chamber 115 is discharged to the lower chamber of the cylinder through the first electromagnetic pressure relief valve 119; in some other embodiments, it can also be elastically connected between the vehicle body and the wheel axle alone.
[0037] It should be noted that the first oil chamber 116, the fourth delivery pipeline 143, and the first oil return pressure tank 112 form an oil-gas spring combination.
[0038] In some embodiments, a hydraulic spring shock absorber device for a vehicle is correspondingly arranged above each driving wheel of the vehicle. The hydraulic spring shock absorber device for the vehicle further includes a high-pressure oil pump and a hydraulic oil storage tank. Before the vehicle travels, a small amount of a first preset hydraulic oil volume is injected into the first air chamber 115 from the hydraulic oil storage tank by the high-pressure oil pump to lubricate the space between the first piston body 114 and the inner cylinder wall of the first suspension hydraulic cylinder 110, and then the high-pressure oil pump is closed; then, the first electromagnetic control valve 118 is opened, and high-pressure gas from the high-pressure gas storage tank 130 is added to the first air chamber 115 with a high-pressure gas content of a first high-pressure gas preset value. The high-pressure gas with a first high-pressure gas preset value in the first air chamber 115 can press the corresponding first piston body 114 down to the bottom of the first suspension hydraulic cylinder 110, so that the space of the first oil chamber 116 is squeezed to zero, and then the first electromagnetic control valve 118 is closed; the high-pressure oil pump is used to fill the first oil return pressure tank 112 with a second preset hydraulic oil volume; after the first air chamber 115 is initially depressurized, the first top cover slides to a first preset position of the first suspension hydraulic cylinder 110, thereby increasing the space of the first oil chamber 116, and the first oil return pressure tank 112 inputs hydraulic oil into the first oil chamber 116 through the fourth delivery pipeline 143; after multiple first suspension hydraulic cylinders 110 are depressurized, the suspension of a certain first suspension hydraulic cylinder 110 may be higher. Exemplarily, when the load above one first suspension hydraulic cylinder 110 is greater than the load above another first suspension hydraulic cylinder 110, the height of this first suspension hydraulic cylinder 110 will decrease while the height of the other first suspension hydraulic cylinder 110 will increase. At this time, the first electromagnetic pressure relief valve 119 corresponding to the other first suspension hydraulic cylinder 110 is opened, and the high-pressure gas in the first air chamber 115 is transported to the first oil return pressure tank 112 through the third delivery pipeline 142, the first air chamber 115 is depressurized, and a sliding occurs between the corresponding first piston body 114 and the cylinder wall of the first suspension hydraulic cylinder 110, so that the first suspension hydraulic cylinder 110 descends until the vehicle body corresponding to the two first suspension hydraulic cylinders 110 is balanced, and all the first electromagnetic control valves 118 are closed after the vehicle body posture adjustment is completed. In addition, by filling the first oil return pressure tank 112 with a second preset hydraulic oil volume through the high-pressure oil pump, a certain gap for storing compressed air can be left at the top of the first oil return pressure tank 112, and the fourth delivery pipeline 143 is arranged near the bottom of the first oil return pressure tank 112 and above the bottom of the first oil return pressure tank 112, so that after the first oil return pressure tank 112 initially inputs hydraulic oil into the first oil chamber 116, hydraulic oil can still be stored at the bottom of the first oil return pressure tank 112, preventing the gas in the first oil return pressure tank 112 from entering the first oil chamber 116.
[0039] In some embodiments, the first delivery pipeline 140 is connected to the first gas buffer tank 117 through the top position of the first gas buffer tank 117, and the first delivery pipeline 140 is connected to the high-pressure gas storage tank 130 through the top of the high-pressure gas storage tank 130; the second delivery pipeline 141 is connected to the first oil return pressure tank 112 through the top position of the first oil return pressure tank 112, and the second delivery pipeline 141 is connected to the high-pressure gas storage tank 130 through the bottom of the high-pressure gas storage tank 130.
[0040] In some embodiments, the hydraulic spring shock absorber for a vehicle further includes a ninth delivery pipeline. One end of the ninth delivery pipeline is connected to the first gas chamber 115, and the other end of the ninth delivery pipeline is connected to the first gas buffer tank 117 through the bottom of the first gas buffer tank 117.
[0041] It should be noted that the one-way check valve 131 refers to a valve whose closing member is a circular valve flap and which blocks the backflow of the gas delivered from the high-pressure gas storage tank 130 to the first oil return pressure tank 112 by its own weight and the action of the medium pressure, so that only the high-pressure gas can be delivered from the first oil return pressure tank 112 to the high-pressure gas storage tank 130 between the high-pressure gas storage tank 130 and the first oil return pressure tank 112, and the backflow of the medium delivered to the high-pressure gas storage tank 130 is avoided.
[0042] In some embodiments, a gas injection port is further opened at the top of the first oil return pressure tank 112. The hydraulic spring shock absorber for a vehicle further includes a gas input pipeline and a gas delivery control valve. The gas input pipeline is internally connected to the first oil return pressure tank 112 through the gas injection port, and the gas delivery control valve is arranged on the gas delivery pipeline.
[0043] Refer to Figure 1 , it can be understood that the hydraulic spring shock absorber for a vehicle further includes a first adjustable damping valve 113, and the first adjustable damping valve 113 is arranged on the fourth delivery pipeline 143.
[0044] It should be noted that by arranging the first adjustable damping valve 113 on the fourth delivery pipeline 143 to control the flow rate and damping of the fluid between the first oil return pressure tank 112 and the first oil chamber 116, the body on the first suspension hydraulic cylinder 110 can be slowly raised and lowered during the process of descending and ascending, reducing the vibration and impact during vehicle driving and improving the driving comfort.
[0045] Refer to Figure 1 , it can be understood that the other end of the first piston rod extends out of the bottom of the first suspension hydraulic cylinder 110 and is connected to the external first vehicle driving wheel 111.
[0046] In some embodiments, the hydraulic spring shock absorber for a vehicle further includes a suspension, a first suspension height sensor, and a control device. The first suspension hydraulic cylinder 110 is provided at the bottom of the suspension, the first suspension height sensor is provided on the suspension above the corresponding first suspension hydraulic cylinder 110, the first suspension height sensor is connected to the control device, and the control device is further connected to the first electromagnetic control valve 118, the first electromagnetic pressure relief valve 119, and the high-pressure air pump 132 respectively.
[0047] Specifically, the first suspension height sensor is provided on the suspension of the vehicle above the first suspension hydraulic cylinder 110. The first suspension height sensor is used to detect the distance between the suspension of the vehicle above the first suspension hydraulic cylinder 110 and the ground to generate a first height detection signal and send the first height detection signal to the control device. The control device determines the balance of the vehicle body according to the multiple first height detection signals sent by the multiple hydraulic spring shock absorbers for vehicles.
[0048] In some embodiments, a body height sensor, a vehicle attitude sensor, or other devices can also be provided to measure the distance between the vehicle chassis and the ground or the relative height data of the chassis, and output the data to the control device, without being limited to the embodiments of the present application.
[0049] In the present application, when the vehicle is traveling on an uneven road surface and the vehicle body drops due to bumps at a certain place, the first electromagnetic control valve 118 is opened, and high-pressure gas is filled into the first gas buffer tank 117 from the high-pressure gas storage tank 130. The high-pressure gas then fills into the first gas chamber 115 from the first gas buffer tank 117. The high-pressure gas can push down the corresponding first piston body 114, thereby raising the vehicle body corresponding to the first suspension hydraulic cylinder 110 to achieve return; when the vehicle is traveling on an uneven road surface and the vehicle body rises due to bumps at a certain place, the first electromagnetic pressure relief valve 119 is opened, and the high-pressure gas in the first gas chamber 115 is transported to the first oil return pressure tank 112 through the third pipeline 142. The first gas chamber 115 is depressurized, and the corresponding first piston body 114 rises, thereby lowering the vehicle body corresponding to the first suspension hydraulic cylinder 110 to achieve return. The return of the first suspension hydraulic cylinder 110 is achieved by the elastic potential energy after the first gas chamber 115 is depressurized, so that when the vehicle is traveling on an uneven road surface, the smoothness of the vehicle body can be improved, the road feeling of the driver can be effectively improved, the stability of vehicle operation, and the comfort of passengers can be improved; when the high-pressure gas in the high-pressure gas storage tank 130 is insufficient, the high-pressure air pump 132 is opened, and the gas in the first oil return pressure tank 112 is pumped into the high-pressure gas storage tank 130 through the high-pressure air pump 132 and the second pipeline 141 to achieve high-pressure gas replenishment. Through this setting of the present application, the vehicle can be shock-absorbed, the harmful vibrations generated during the operation of the vehicle can be eliminated, the driving smoothness can be ensured, the high-pressure gas can be continuously recycled, the emissions of harmful gases can be reduced, and energy conservation and environmental protection can be achieved.
[0050] Example 2:
[0051] Refer to Figure 2 , Figure 2Shows a hydraulic spring shock absorber for a vehicle provided by an embodiment of the second aspect of the present application, including: a first suspension hydraulic cylinder 110, a first piston body 114, a first oil return pressure tank 112, a first gas buffer tank 117, a high-pressure gas storage tank 130, a high-pressure air pump 132, a one-way check valve 131, a first electromagnetic pressure relief valve 119, a first electromagnetic control valve 118, a first delivery pipeline 140, a second delivery pipeline 141, a third delivery pipeline 142, and a fourth delivery pipeline 143; the first piston body 114 is disposed inside the first suspension hydraulic cylinder 110, the first piston body 114 includes a first piston rod and a first top cover, the first top cover abuts against the inner wall of the first suspension hydraulic cylinder 110 and divides the interior of the first suspension hydraulic cylinder 110 into a first gas chamber 115 and a first oil chamber 116, the first gas chamber 115 is disposed above the first top cover, the first oil chamber 116 is disposed below the first top cover, one end of the first piston rod is connected to the bottom of the first top cover, and the other end of the first piston rod extends out of the bottom of the first suspension hydraulic cylinder 110; the first gas chamber 115 is communicated with the first gas buffer tank 117, one end of the first delivery pipeline 140 is communicated with the first gas buffer tank 117, the other end of the first delivery pipeline 140 is communicated with the high-pressure gas storage tank 130, one end of the second delivery pipeline 141 is communicated with the high-pressure gas storage tank 130, one end of the third delivery pipeline 142 is communicated with the first gas buffer tank 117, and the other ends of the second delivery pipeline 141 and the third delivery pipeline 142 are both communicated with the first oil return pressure tank 112 through the top of the first oil return pressure tank 112, one end of the fourth delivery pipeline 143 is communicated with the first oil chamber 116, and the other end of the fourth delivery pipeline 143 is communicated with the first oil return pressure tank 112 through the bottom of the first oil return pressure tank 112; the high-pressure air pump 132 and the one-way check valve 131 are both disposed on the second delivery pipeline 141, the one-way check valve 131 is used to control the fluid in the second delivery pipeline 141 to flow from the first oil return pressure tank 112 in the direction of the high-pressure gas storage tank 130, the first electromagnetic pressure relief valve 119 is disposed on the third delivery pipeline 142, and the first electromagnetic control valve 118 is disposed on the first delivery pipeline 140;Moreover, the hydraulic spring type shock absorber for a vehicle further includes a second suspension hydraulic cylinder 120, a second piston body 124, a second oil return pressure tank 122, a second gas buffer tank 127, a second electromagnetic pressure relief valve 129, a second electromagnetic control valve 128, a fifth pipeline 144, a sixth pipeline 147, and a seventh pipeline 148. The second piston body 124 is disposed inside the second suspension hydraulic cylinder 120. The second piston body 124 includes a second piston rod and a second top cover. The second top cover abuts against the inner wall of the second suspension hydraulic cylinder 120 and divides the interior of the second suspension hydraulic cylinder 120 into a second gas chamber 125 and a second oil chamber 126. The second gas chamber 125 is disposed above the second top cover, and the second oil chamber 126 is disposed below the second top cover. One end of the second piston rod is connected to the bottom of the second top cover, and the other end of the second piston rod extends out of the bottom of the second suspension hydraulic cylinder 120. The second gas chamber 125 communicates with the second gas buffer tank 127. One end of the first pipeline 140 close to the high-pressure gas storage tank 130 also communicates with the second gas buffer tank 127. The first electromagnetic control valve 118 is disposed between the first gas buffer tank 117 and the high-pressure gas storage tank 130. The second electromagnetic control valve 128 is also disposed on the first pipeline 140, and the second electromagnetic control valve 128 is disposed between the second gas buffer tank 127 and the high-pressure gas storage tank 130. One end of the fifth pipeline 144 communicates with one end of the second pipeline 141 close to the high-pressure gas storage tank 130. One end of the sixth pipeline 147 communicates with the second gas buffer tank 127. The other ends of the fifth pipeline 144 and the sixth pipeline 147 both communicate with the second oil return pressure tank 122 through the top of the second oil return pressure tank 122. One end of the seventh pipeline 148 communicates with the second oil chamber 126. The other end of the seventh pipeline 148 communicates with the second oil return pressure tank 122 through the bottom of the second oil return pressure tank 122. The high-pressure air pump 132 and the one-way check valve 131 are disposed close to the high-pressure gas storage tank 130. The one-way check valve 131 is used to control the flow of the fluid in the fifth pipeline 144 from the first oil return pressure tank 112 or the second oil return pressure tank 122 in the direction of the high-pressure gas storage tank 130. The second electromagnetic pressure relief valve 129 is disposed on the sixth pipeline 147.;
[0052] It should be noted that the lower chamber inside the second suspension hydraulic cylinder 120, that is, the second oil chamber 126, the seventh pipeline 148, and the second oil return pressure tank 122 form an oil-gas spring in combination.
[0053] It should be noted that the first suspension hydraulic cylinder 110 and the second suspension hydraulic cylinder 120 are arranged in the left-right direction. That is, in some embodiments, the first suspension hydraulic cylinder 110 and the second suspension hydraulic cylinder 120 are both disposed in front of the vehicle frame, and in other embodiments, the first suspension hydraulic cylinder 110 and the second suspension hydraulic cylinder 120 are both disposed behind the vehicle frame. In this regard, the embodiments of the present application are not limited.
[0054] Referring to Figure 2 , it can be understood that the hydraulic spring shock absorber for vehicles further includes a second adjustable damping valve 123, and the second adjustable damping valve 123 is provided on the seventh delivery pipeline 148.
[0055] It should be noted that by providing the second adjustable damping valve 123 on the fifth delivery pipeline 144 to control the flow rate and damping of the fluid between the second oil return pressure tank 122 and the second oil chamber 126, the vehicle body on the second suspension hydraulic cylinder 120 can achieve slow rise and fall during the process of descending and ascending, reduce the vibration and impact during vehicle driving, and improve the driving comfort.
[0056] Referring to Figure 2 , it can be understood that the other end of the second piston rod extends out of the bottom of the second suspension hydraulic cylinder 120 and is connected to the external second vehicle driving wheel 121.
[0057] Referring to Figure 2 , it can be understood that the hydraulic spring shock absorber for vehicles further includes an eighth delivery pipeline 149. One end of the eighth delivery pipeline 149 is communicated with the high-pressure gas storage tank 130, the other end of the eighth delivery pipeline 149 is communicated with the first delivery pipeline 140, and the eighth delivery pipeline 149 is provided between the first electromagnetic control valve 118 and the second electromagnetic control valve 128.
[0058] Referring to Figure 2 , it can be understood that oil injection ports are provided on both the first oil return pressure tank 112 and the second oil return pressure tank 122.
[0059] In some embodiments, before the vehicle starts to run, a small amount of hydraulic oil in the hydraulic oil storage tank is injected into the first air chamber 115 and the second air chamber 125 respectively to lubricate the space between the first piston body 114 and the inner cylinder wall of the first suspension hydraulic cylinder 110 and the space between the second piston body 124 and the inner cylinder wall of the second suspension hydraulic cylinder 120. Then, the first electromagnetic control valve 118 and the second electromagnetic control valve 128 are opened, and high-pressure gas with a content of the first high-pressure gas preset value is added to the first air chamber 115 and the second air chamber 125 respectively through the high-pressure gas storage tank 130 and the first pipeline 140. The high-pressure gas with a content of the first high-pressure gas preset value in the first air chamber 115 and the second air chamber 125 can push the corresponding first piston body 114 and second piston body 124 down to the bottom of the first suspension hydraulic cylinder 110 and the second suspension hydraulic cylinder 120, so that the spaces of the first oil chamber 116 and the second oil chamber 126 are both squeezed to zero, and then the first electromagnetic control valve 118 and the second electromagnetic control valve 128 are closed. Hydraulic oil with a second preset hydraulic oil volume is filled into the first oil return pressure tank 112 and the second oil return pressure tank 122 respectively through their corresponding oil filling ports. After the hydraulic oil is filled, the oil filling ports are closed. Exemplarily, movable gland covers are respectively arranged on the first oil return pressure tank 112 and the second oil return pressure tank 122, and the movable gland covers are arranged corresponding to the corresponding oil filling ports. The oil filling ports are closed by rotating the movable gland covers. After the first air chamber 115 and the second air chamber 125 are respectively depressurized preliminarily, the first top cover slides to the first preset position of the first suspension hydraulic cylinder 110, and the second top cover slides to the second preset position of the second suspension hydraulic cylinder 120, so that the spaces of the first oil chamber 116 and the second oil chamber 126 are increased. The first oil return pressure tank 112 inputs hydraulic oil into the first oil chamber 116 through the fourth pipeline 143, and the second oil return pressure tank 122 inputs hydraulic oil into the second oil chamber 126 through the seventh pipeline 148.After the first suspension hydraulic cylinder 110 and the second suspension hydraulic cylinder 120 are respectively depressurized, the suspensions on the first suspension hydraulic cylinder 110 and the second suspension hydraulic cylinder 120 may be at different heights. Exemplarily, when the load above the first suspension hydraulic cylinder 110 is greater than the load above the second suspension hydraulic cylinder 120, the height of the first suspension hydraulic cylinder 110 will decrease while the second suspension hydraulic cylinder 120 will rise. At this time, open the second electromagnetic pressure relief valve 129 to release part of the high-pressure gas in the second air chamber 125 from the second gas buffer tank 127 to the second oil return pressure tank 122. On the one hand, the gas in the first air chamber 115 decreases, and on the other hand, pressurized gas is introduced into the second oil return pressure tank 122 so that the pressurized gas provides pressure to the second oil return pressure tank 122, and the pressure is transmitted from the second oil chamber 126 to the second piston body 124 through the fifth pipeline 144, so that the second piston body 124 slides between the cylinder wall of the second suspension hydraulic cylinder 120, causing the second suspension hydraulic cylinder 120 to descend until the body corresponding to the second suspension hydraulic cylinder 120 is balanced with the first suspension hydraulic cylinder 110, and all electromagnetic pressure relief valves are closed after the body posture adjustment is completed.;
[0060] It should be noted that by injecting a small amount of hydraulic oil into the first air chamber 115 and the second air chamber 125 first, the lubrication function between the first suspension hydraulic cylinder 110 and the first piston body 114, and the lubrication function between the second suspension hydraulic cylinder 120 and the second piston body 124 are improved; after adding high-pressure gas with a content of the first high-pressure gas preset value to the first air chamber 115 and the second air chamber 125 respectively, the space of the first air chamber 115 and the second air chamber 125 reaches the maximum threshold, the first top cover and the second top cover slide to the bottom of the first suspension hydraulic cylinder 110 and the second suspension hydraulic cylinder 120, and the space of the first oil chamber 116 and the second oil chamber 126 is squeezed to zero to evacuate the gas in the space below the first top cover in the first suspension hydraulic cylinder 110 and the gas in the space below the second top cover in the second suspension hydraulic cylinder 120; by filling the first oil return pressure tank 112 and the second oil return pressure tank 122 with the second preset hydraulic oil volume through their respective oil filling ports, a certain gap for storing compressed air can be left at the top of both the first oil return pressure tank 112 and the second oil return pressure tank 122, and after the first oil return pressure tank 112 first introduces hydraulic oil into the first oil chamber 116, hydraulic oil can still be stored at the bottom of the first oil return pressure tank 112 to avoid the gas in the first oil return pressure tank 112 from entering the first oil chamber 116. Similarly, after the second oil return pressure tank 122 first introduces hydraulic oil into the second oil chamber 126, hydraulic oil can still be stored at the bottom of the second oil return pressure tank 122 to avoid the gas in the second oil return pressure tank 122 from entering the second oil chamber 126.
[0061] Another embodiment of the present application further provides a vehicle, which includes a hydraulic spring shock absorber device for a vehicle as described in any of the above embodiments.
[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0063] The above is the preferred embodiment of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present application.
[0064] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and purpose of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A hydraulic spring type shock absorber for a vehicle, characterized in that, Including: A first suspension hydraulic cylinder, a first piston body, a first oil return pressure tank, a first gas buffer tank, a high-pressure gas storage tank, a high-pressure air pump, a one-way check valve, a first electromagnetic pressure relief valve, a first electromagnetic control valve, a first pipeline, a second pipeline, a third pipeline and a fourth pipeline; The first piston body is arranged inside the first suspension hydraulic cylinder. The first piston body includes a first piston rod and a first top cover. The first top cover abuts against the inner wall of the first suspension hydraulic cylinder and divides the inside of the first suspension hydraulic cylinder into a first gas chamber and a first oil chamber. The first gas chamber is located above the first top cover, and the first oil chamber is located below the first top cover. One end of the first piston rod is connected to the bottom of the first top cover, and the other end of the first piston rod extends out of the bottom of the first suspension hydraulic cylinder; The first gas chamber is communicated with the first gas buffer tank. One end of the first pipeline is communicated with the first gas buffer tank, and the other end of the first pipeline is communicated with the high-pressure gas storage tank. One end of the second pipeline is communicated with the high-pressure gas storage tank. One end of the third pipeline is communicated with the first gas buffer tank. The other ends of the second pipeline and the third pipeline are both communicated with the first oil return pressure tank through the top of the first oil return pressure tank. One end of the fourth pipeline is communicated with the first oil chamber, and the other end of the fourth pipeline is communicated with the first oil return pressure tank through the bottom of the first oil return pressure tank; The high-pressure air pump and the one-way check valve are both arranged on the second pipeline. The one-way check valve is used to control the fluid in the second pipeline to flow from the first oil return pressure tank in the direction of the high-pressure gas storage tank. The first electromagnetic pressure relief valve is arranged on the third pipeline, and the first electromagnetic control valve is arranged on the first pipeline.
2. The hydraulic spring type shock absorber for a vehicle according to claim 1, characterized in that, The hydraulic spring type shock absorber for vehicles further includes a first adjustable damping valve, and the first adjustable damping valve is arranged on the fourth pipeline.
3. The hydraulic spring type shock absorber for a vehicle according to claim 1, wherein The other end of the first piston rod extends out of the bottom of the first suspension hydraulic cylinder and is connected to an external first vehicle driving wheel.
4. The hydraulic spring type shock absorber for a vehicle according to claim 1, characterized in that, The hydraulic spring type shock absorber for a vehicle further includes a second suspension hydraulic cylinder, a second piston body, a second oil return pressure tank, a second gas buffer tank, a second electromagnetic pressure relief valve, a second electromagnetic control valve, a fifth delivery pipeline, a sixth delivery pipeline, and a seventh delivery pipeline. The second piston body is disposed inside the second suspension hydraulic cylinder. The second piston body includes a second piston rod and a second top cover. The second top cover abuts against the inner wall of the second suspension hydraulic cylinder and divides the interior of the second suspension hydraulic cylinder into a second gas chamber and a second oil chamber. The second gas chamber is disposed above the second top cover, and the second oil chamber is disposed below the second top cover. One end of the second piston rod is connected to the bottom of the second top cover, and the other end of the second piston rod extends out of the bottom of the second suspension hydraulic cylinder. The second gas chamber communicates with the second gas buffer tank. One end of the first delivery pipeline close to the high-pressure gas storage tank also communicates with the second gas buffer tank. The first electromagnetic control valve is disposed between the first gas buffer tank and the high-pressure gas storage tank. The second electromagnetic control valve is also disposed on the first delivery pipeline, and the second electromagnetic control valve is disposed between the second gas buffer tank and the high-pressure gas storage tank. One end of the fifth delivery pipeline communicates with one end of the second delivery pipeline close to the high-pressure gas storage tank. One end of the sixth delivery pipeline communicates with the second gas buffer tank. The other ends of the fifth delivery pipeline and the sixth delivery pipeline both communicate with the second oil return pressure tank through the top of the second oil return pressure tank. One end of the seventh delivery pipeline communicates with the second oil chamber. The other end of the seventh delivery pipeline communicates with the second oil return pressure tank through the bottom of the second oil return pressure tank. The high-pressure air pump and the one-way check valve are disposed close to the high-pressure gas storage tank. The one-way check valve is used to control the fluid in the fifth delivery pipeline to flow in the direction of the high-pressure gas storage tank from the first oil return pressure tank or the second oil return pressure tank. The second electromagnetic pressure relief valve is disposed on the sixth delivery pipeline.
5. The hydraulic spring type shock absorber for a vehicle according to claim 4, characterized in that, The hydraulic spring type shock absorber for a vehicle further includes a second adjustable damping valve, and the second adjustable damping valve is disposed on the seventh delivery pipeline.
6. The hydraulic spring type shock absorber for a vehicle according to claim 4, characterized in that, The other end of the second piston rod extends out of the bottom of the second suspension hydraulic cylinder and is connected to an external second vehicle driving wheel.
7. The hydraulic spring type shock absorber for a vehicle according to claim 4, characterized in that, The hydraulic spring type shock absorber for a vehicle further includes an eighth delivery pipeline. One end of the eighth delivery pipeline communicates with the high-pressure gas storage tank, and the other end of the eighth delivery pipeline communicates with the first delivery pipeline. The eighth delivery pipeline is disposed between the first electromagnetic control valve and the second electromagnetic control valve.
8. The hydraulic spring type shock absorber for a vehicle according to claim 4, characterized in that, Oil injection ports are provided on both the first oil return pressure tank and the second oil return pressure tank.
9. A vehicle, characterized in that, It includes the hydraulic spring type shock absorber for a vehicle according to any one of claims 1 to 8.