Vibration reduction system, suspension assembly and vehicle

Abstract

The utility model discloses a vibration reduction system, a suspension assembly and a vehicle. The vibration reduction system comprises a liquid storage structure and a vibration reduction structure, each vibration damping structure comprises a hydraulic vibration damper, and the hydraulic vibration damper is connected with an oil inlet path; the liquid storage structure is used for selectively supplying oil to the oil inlet way of any one of the multiple vibration reduction structures. According to the vibration reduction system, it is guaranteed that oil liquid can be accurately conveyed into a vibration reduction structure needing the oil liquid, then it can be guaranteed that the hydraulic vibration damper works stably, and the vibration reduction effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle manufacturing technical field especially, it relates to a damping system, have the suspension assembly with the damping system and have the vehicle with the suspension assembly. BACKGROUND

[0002] In the related art, the damping state of the hydraulic damper can be adjusted by adjusting the oil to ensure the ride comfort and the stability of the vehicle, but the existing damping system cannot accurately adjust the oil of the single hydraulic damper. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the prior art is solved, for this, the utility model provides a damping system, the damping system guarantees that the oil can be accurately delivered to the damping structure that needs oil, and then can guarantee that the hydraulic damper works stably, realizes the damping effect.

[0004] The damping system according to the utility model embodiment, comprising: liquid storage structure;Multiple damping structures, each damping structure includes hydraulic damper, the hydraulic damper is connected with oil inlet oil circuit;Wherein, the liquid storage structure is used to selectively supply oil to the oil inlet oil circuit of any one of the damping structure in multiple damping structures.

[0005] The damping system according to the utility model embodiment, by setting liquid storage structure to selectively supply oil to the oil inlet oil circuit of any one of the damping structure in multiple damping structures, so that the oil can be accurately delivered to the damping structure that needs oil, and then can guarantee that the hydraulic damper works stably, realizes the damping effect.

[0006] The damping system according to some embodiments of the utility model, the damping system further includes main oil circuit and multiple branch oil circuits, the main oil circuit is connected with the liquid storage structure, the main oil circuit is connected with multiple branch oil circuits respectively, and multiple branch oil circuits are connected with the oil inlet oil circuit of multiple damping structures one by one.

[0007] The damping system according to some embodiments of the utility model, each branch oil circuit is equipped with first control valve, and the first control valve is used to control the on-off of the corresponding branch oil circuit.

[0008] The damping system according to some embodiments of the utility model, the liquid storage structure includes liquid storage pump and liquid storage pot, and the liquid storage pump is used to pump the oil in the liquid storage pot to the oil inlet oil circuit.

[0009] According to the damping system of some embodiments of the utility model, the hydraulic damper has a hydraulic damping chamber, and the hydraulic damper is provided with a piston piece movable in the hydraulic damping chamber, a communication flow channel is formed in the piston piece, and the communication flow channel is used for communicating the oil inlet oil way with the hydraulic damping chamber.

[0010] According to the damping system of some embodiments of the utility model, the communication flow channel is configured to extend upward along the vertical direction, and the top of the communication flow channel is communicated with the oil inlet oil way and the bottom is communicated with the hydraulic damping chamber.

[0011] According to the damping system of some embodiments of the utility model, the damping structure further comprises: an accumulator, a movable moving piece is arranged in the accumulator, the moving piece divides an inner cavity in the accumulator into a hydraulic inner cavity and a gas pressure inner cavity, and the hydraulic inner cavity is communicated with the oil inlet oil way; a gas adjusting pipeline is used for adjusting the gas pressure in the gas pressure inner cavity.

[0012] According to the damping system of some embodiments of the utility model, the damping structure further comprises an air pump, the gas adjusting pipeline is provided with an air inlet, the air inlet is communicated with the air pump, and the air pump is adapted to supply air into the gas pressure inner cavity through the gas adjusting pipeline.

[0013] According to the damping system of some embodiments of the utility model, a gas storage tank is arranged in the gas adjusting pipeline, the gas storage tank is located between the air pump and the gas pressure inner cavity, and is used for storing the gas pumped by the air pump and for supplying air into the gas pressure inner cavity.

[0014] According to the damping system of some embodiments of the utility model, a switch valve is further arranged in the gas adjusting pipeline, and the switch valve is arranged between the air pump and the gas storage tank.

[0015] According to the damping system of some embodiments of the utility model, the damping system further comprises a pressure relief valve, the gas adjusting pipeline is provided with a pressure relief port, and the pressure relief port is used for communicating the pressure relief valve with the gas adjusting pipeline.

[0016] According to the damping system of some embodiments of the utility model, the damping system further comprises a control module, the control module is used for controlling the liquid storage structure to selectively supply oil to the oil inlet oil way, and is used for controlling the gas adjusting pipeline to selectively adjust the gas pressure in the gas pressure inner cavity.

[0017] According to the damping system of some embodiments of the utility model, the damping system further comprises a pressure detection piece, the pressure detection piece is used for detecting the gas pressure in the gas pressure inner cavity, and the control module is adapted to control the gas adjusting pipeline according to the detection result of the pressure detection piece.

[0018] The utility model also proposes a suspension assembly.

[0019] According to the suspension assembly of the utility model embodiment, including the damping system of any one embodiment described above.

[0020] The utility model also proposes a vehicle.

[0021] According to the vehicle of the utility model embodiment, including the damping system of any one embodiment described above or the suspension assembly of any one embodiment described above.

[0022] The suspension assembly, the vehicle and the damping system described above have the same advantages as the prior art, and will not be repeated here.

[0023] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the utility model will become apparent and easily understood from the description of the embodiments combined with the following drawings, in which:

[0025] Figure 1 It is the structure diagram of the damping structure according to the utility model embodiment Figure 1 ;

[0026] Figure 2 It is the structure diagram of the damping structure according to the utility model embodiment Figure 2 ;

[0027] Figure 3 It is the gas circuit diagram of the damping structure according to the utility model embodiment;

[0028] Figure 4 It is the gas circuit diagram of the damping system according to the utility model embodiment.

[0029] Sign list:

[0030] Damping system 100,

[0031] Damping structure 1, hydraulic shock absorber 11, hydraulic damping cavity 111, piston piece 112, communication flow passage 1121, oil inlet oil circuit 12, main oil circuit 21, branch oil circuit 22, first control valve 23, second control valve 24, liquid storage structure 3, liquid storage pump 31, liquid storage flask 32, energy accumulator 4, hydraulic inner chamber 41, air pressure inner chamber 42, gas adjusting pipeline 5, air inlet 51, on-off valve 52, pressure relief valve 53, pressure relief port 54, pressure detection piece 55, air pump 6, gas storage tank 7, spring 8. DETAILED DESCRIPTION

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Unless otherwise specified, the front-back direction in this application refers to the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction refers to the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction refers to the vertical direction of the vehicle, i.e., the Z direction.

[0036] The following is for reference. Figures 1-4 The vibration damping system 100 according to an embodiment of the present invention ensures that the oil can be accurately delivered to the vibration damping structure 1 that requires the oil, thereby ensuring the stable operation of the hydraulic vibration damper 11 and achieving the vibration damping effect.

[0037] like Figures 1-4 As shown, a vibration damping system 100 according to an embodiment of the present invention includes: a liquid storage structure 3 and a plurality of vibration damping structures 1.

[0038] The liquid storage structure 3 is used as a supply source of the oil, and stores the oil inside, and can supply the oil to the damping structure 1 when needed.

[0039] The damping system 100 can be provided with a plurality of damping structures 1, for example, two, three or even more damping structures 1, each of which can independently realize the damping effect, and each of which comprises a hydraulic damper 11 that absorbs and reduces vibration through the flow and pressure change of the oil, for example, when the vehicle or the equipment encounters bumps or vibrations, the hydraulic damper 11 can start to work, and consume energy through the flow and pressure change of the oil, thereby realizing the damping and buffering effect.

[0040] Further, the hydraulic damper 11 is connected with the oil inlet oil way 12, that is, the external oil can flow into the hydraulic damper 11 through the oil inlet oil way 12 for use by the hydraulic damper 11. The liquid storage structure 3 is used to selectively supply oil to the oil inlet oil way 12 of any one of the plurality of damping structures 1, that is, the liquid storage structure 3 can provide oil to the required damping structure 1 through the oil inlet oil way 12 when needed, that is, the oil stored in the liquid storage structure 3 can flow to the hydraulic damper 11 of each damping structure 1 that needs oil, so as to ensure the normal and stable work of the hydraulic damper 11, avoid the influence of too little oil or too small oil pressure on the damping effect, and the damping structure 1 that does not need oil can not be supplied with oil by the liquid storage structure 3, and when one of the damping structures 1 fails to work normally, the other damping structures 1 can still work normally to ensure the damping effect, thereby improving the reliability and flexibility of the damping system 100.

[0041] In practice, the excess oil that is not needed by each damping structure 1 can also be discharged to the liquid storage structure 3 through the oil inlet oil way 12, so as to avoid the decline of the damping performance or the damage to the hydraulic damper 11 caused by too large oil pressure or oil flow of the hydraulic damper 11.

[0042] Therefore, by arranging the oil inlet oil way 12 to communicate the liquid storage structure 3 and the plurality of damping structures 1 to accurately control the flow direction and distribution of the oil, it is ensured that the oil can be accurately delivered to the damping structure 1 that needs oil, and then the stable work of the hydraulic damper 11 is ensured, and the damping effect is realized.

[0043] According to the damping system 100 of the embodiment of the utility model, the liquid storage structure 3 is arranged to selectively supply oil to the oil inlet oil way 12 of any one of the plurality of damping structures 1, so that the oil can be accurately delivered to the damping structure 1 that needs oil, and then the stable work of the hydraulic damper 11 is ensured, and the damping effect is realized.

[0044] In some embodiments, as Figure 4As shown, the vibration damping system 100 also includes a main oil passage 21 and multiple branch oil passages 22. The main oil passage 21 is connected to the liquid storage structure 3, and the main oil passage 21 is connected to multiple branch oil passages 22 respectively. In this way, the oil in the liquid storage structure 3 can flow into the main oil passage 21, and then the oil in the main oil passage 21 can flow into multiple branch oil passages 22 respectively. The number of branch oil passages 22 can be set to two, three, four or even more, which can be flexibly set according to the actual situation and needs.

[0045] Furthermore, multiple branch oil passages 22 are connected one-to-one with the oil inlet passages 12 of multiple vibration damping structures 1. That is, the number of branch oil passages 22 corresponds to the number of oil inlet passages 12, so that multiple branch oil passages 22 are connected one-to-one with the oil inlet passages 12 of multiple vibration damping structures 1. This allows the oil in the multiple branch oil passages 22 to flow one-to-one into the oil inlet passages 12 of multiple vibration damping structures 1, and then into each hydraulic vibration damper 11 through each oil inlet passage 12. This ensures that each hydraulic vibration damper 11 has sufficient oil, ensuring the normal and stable operation of each hydraulic vibration damper 11 and its vibration damping effect.

[0046] Specifically, such as Figure 4 As shown, taking an example with four branch oil passages 22 and four damping structures 1, the main oil passage 21 is connected to the reservoir structure 3 so that the oil stored in the reservoir structure 3 can flow into the main oil passage 21. The main oil passage 21 is connected to the four branch oil passages 22 so that the oil in the main oil passage 21 can flow into the four branch oil passages 22 respectively. The four branch oil passages 22 are connected one-to-one with the oil inlet passages 12 of the four damping structures 1 so that the oil in the four branch oil passages 22 can continue to flow into the four oil inlet passages 12, and then into the four hydraulic dampers 11, to ensure that there is enough oil in the four hydraulic dampers 11 for normal and reliable operation. Of course, when the oil flow or oil pressure in the four hydraulic dampers 11 is too high, the excess oil can also flow into the main oil passage 21 through the four branch oil passages 22, and then into the reservoir structure 3 for storage.

[0047] In some embodiments, each branch oil passage 22 is provided with a first control valve 23, which is used to control the opening and closing of the corresponding branch oil passage 22.

[0048] That is, the opening and closing of the first control valve 23 can be controlled to flexibly control the connection and disconnection between each branch oil path 22 and the corresponding oil inlet path 12, so as to selectively supply oil from the oil storage structure 3 to the multiple damping structures 1 to meet different damping requirements. For example, when the oil in one of the damping systems 100 is sufficient, i.e., the oil inlet path 12 of the damping structure 1 does not need to be supplied with oil from the oil storage structure 3, the first control valve 23 can be controlled to be in a closed state to cut off the connection between the oil inlet path 12 of the damping structure 1 and the corresponding branch oil path 22, so that the oil in the branch oil path 22 cannot flow into the oil inlet path 12, and thus the oil storage structure 3 cannot supply oil to the damping structure 1. Alternatively, when the oil in one of the damping systems 100 is insufficient, i.e., the oil inlet path 12 of the damping structure 1 needs to be supplied with oil from the oil storage structure 3, the first control valve 23 can be controlled to be in an open state to connect the oil inlet path 12 of the damping structure 1 and the corresponding branch oil path 22, so that the oil in the branch oil path 22 can flow into the oil inlet path 12, and thus the oil storage structure 3 can supply oil to the damping structure 1.

[0049] Thus, by providing the first control valve 23, flexible distribution of oil is achieved to meet different damping requirements of each damping structure 1.

[0050] Specifically, as shown in Figure 4 , taking an example of four branch oil paths 22 and four damping structures 1, each of the four branch oil paths 22 and the corresponding four oil inlet paths 12 is provided with a first control valve 23, and the opening and closing of the four first control valves 23 can be controlled to flexibly control the connection and disconnection of the corresponding branch oil path 22.

[0051] In some embodiments, as shown in Figure 4 , the oil storage structure 3 includes an oil storage pump 31 and an oil storage tank 32, the oil storage tank 32 is used to store oil, and the oil storage tank 32 needs to have a certain capacity to store enough oil to ensure that enough oil can be provided to the damping system 100, and the oil storage pump 31 is used to pump the oil in the oil storage tank 32 to the oil inlet path 12, i.e., the oil storage pump 31 is the power source of the oil storage structure 3, and when started, the oil in the oil storage tank 32 can be pumped out so that the oil can flow through the main oil path 21 and each branch oil path 22 to the oil inlet path 12 of each damping structure 1, ensuring the stable operation of each damping structure 1. Of course, the oil storage pump 31 can also be used to pump the excess oil of each damping structure 1 from each oil inlet path 12 to the oil storage tank 32 for storage for use by other damping structures 1 that need it.

[0052] Thus, by providing the oil storage pump 31 and the oil storage tank 32, the oil storage structure 3 can continuously and stably supply oil to each damping structure 1, ensuring the normal operation of each damping structure 1 and improving the reliability of the damping system 100.

[0053] In some embodiments, the hydraulic damper 11 has a hydraulic damping chamber 111, and the hydraulic damper 11 is provided with a piston member 112 movable in the hydraulic damping chamber 111.

[0054] Specifically, as shown in Figure 1 and Figure 2 , the inside of the hydraulic damper 11 is hollow to form the hydraulic damping chamber 111, and the piston member 112 is installed in the hydraulic damping chamber 111 and movable in the hydraulic damping chamber 111, as shown in Figure 1 The up-down direction in the above is the vertical direction of the vehicle, and the hydraulic damper 11 extends along the up-down direction, so that the piston member 112 can move up and down in the hydraulic damping chamber 111, Figure 1 and Figure 2 The overall structure of the hydraulic damper 11 shown in the above is cylindrical, and the piston member 112 is also cylindrical and installed in the hydraulic damping chamber 111 spaced apart from the inner wall of the hydraulic damping chamber 111.

[0055] It can be understood that the hydraulic damping chamber 111 is filled with oil, and when the amount of oil in the hydraulic damping chamber 111 increases, the volume ratio of the piston member 112 in the hydraulic damping chamber 111 will decrease, so that the piston member 112 will be lifted by the oil to make the upper end of the piston member 112 extend out of the hydraulic damping chamber 111, so that the piston member 112 moves upward, thereby making the hydraulic damper 11 in a stretched state. When the amount of oil in the hydraulic damping chamber 111 decreases, the volume ratio of the piston member 112 in the hydraulic damping chamber 111 will increase, so that the piston member 112 moves downward and is retracted into the hydraulic damping chamber 111, so that the hydraulic damper 11 is in a compressed state.

[0056] Further, the piston member 112 is formed with a communication passage 1121, and the communication passage 1121 is used to communicate the oil inlet oil passage 12 with the hydraulic damping chamber 111.

[0057] Specifically, as shown in Figure 1 and Figure 2 , the inside of the piston member 112 is hollow to form the communication passage 1121, and the communication passage 1121 communicates with the oil inlet oil passage 12 and the hydraulic damping chamber 111, so that the oil in the oil inlet oil passage 12 can flow into the communication passage 1121, and then flow to the hydraulic damping chamber 111 for use by the hydraulic damper 11, to ensure the normal work of the hydraulic damper 11 and provide certain buffering and rebounding effect for the suspension system.

[0058] In other embodiments, the outside of the hydraulic damper 11 is further provided with an elastic member, which can be configured as a coil spring 8 to be sleeved on the outside of the hydraulic damper 11, and the lower end of the coil spring 8 is fixed on the outside of the hydraulic damper 11.

[0059] Therefore, the coil spring 8 can also fix the vehicle body, providing a certain fixed stiffness and damping and buffering effect for the vehicle's vibration damping system 100. When the coil spring 8 is subjected to axial force, it will be compressed and deformed to form an elastic force to restore its initial state. It can be understood that the greater the compression of the coil spring 8, the greater the rebound force on the force-applying party. That is, the increase in elastic force is proportional to the compression value of the coil spring 8. This ratio is the stiffness value of the coil spring 8, and this stiffness value remains unchanged. That is, the stiffness value provided by the coil spring 8 to the vibration damping system 100 is constant.

[0060] In some embodiments, such as Figure 2 As shown, the connecting channel 1121 is constructed to extend vertically upward, that is, the extension direction of the connecting channel 1121 is the vertical direction of the vehicle. The top of the connecting channel 1121 is connected to the oil inlet passage 12 and the bottom is connected to the hydraulic damping chamber 111. That is, the oil inlet passage 12 is located above the piston 112. Thus, the oil in the oil inlet passage 12 can enter the connecting channel 1121 from the top and flow downward into the connecting channel 1121, and then enter the hydraulic damping chamber 111 for use by the hydraulic damper 11.

[0061] In practice, when a vehicle is traveling on a bumpy road, the top of the piston 112 moves synchronously with the vehicle body, and the bottom of the hydraulic damper 11, i.e., the bottom of the hydraulic damping chamber 111, moves synchronously with the tire. Therefore, the top of the piston 112 has a lower movement frequency and lower acceleration, meaning it is less affected by the road surface. The bottom of the hydraulic damping chamber 111 is more affected by the road surface. By connecting the top of the connecting channel 1121 to the oil inlet passage 12, i.e., setting the oil inlet passage 12 above the piston 112, the impact of the bumpy road surface on the oil inlet passage 12 can be reduced, thus ensuring a stable supply of oil. At the same time, the durability of the connection between the oil inlet passage 12 and the connecting channel 1121 can be improved.

[0062] In addition, since the connection between the top of the connecting channel 1121 and the oil inlet circuit 12, i.e. the top of the piston 112, can be located in the engine compartment of the vehicle, the engine compartment is protected by the engine cover and surrounding sheet metal, and will not be affected by the impact of foreign objects such as mud, sand, and stones. Therefore, the protection of the oil inlet circuit 12 can be improved, and the oil inlet circuit 12 can be effectively prevented from being damaged and leaking oil under harsh road conditions.

[0063] In some embodiments, the vibration damping structure 1 further includes an accumulator 4 and an oil inlet passage 12.

[0064] like Figures 1-3As shown, the accumulator 4 is provided with a movable movable member, which separates the inner cavity of the accumulator 4 into a hydraulic inner cavity 41 and a gas pressure inner cavity 42. The hydraulic inner cavity 41 can be filled with high-pressure oil, and the gas pressure inner cavity 42 can be filled with high-pressure gas. The movable member can move between the hydraulic inner cavity 41 and the gas pressure inner cavity 42, thereby changing the volume of the two inner cavities. When the oil pressure in the hydraulic inner cavity 41 increases, the movable member moves towards the gas pressure inner cavity 42, compresses the gas and stores energy. When the oil pressure in the hydraulic inner cavity 41 decreases, the movable member moves towards the hydraulic inner cavity 41, releases the gas and replenishes the oil. In actual design, the movable member can be set as a bellows, a diaphragm, a piston, etc., which can be flexibly set according to actual conditions, and is not limited to the embodiment described.

[0065] The hydraulic inner cavity 41 is in communication with the oil inlet oil passage 12, i.e. the oil in the oil inlet oil passage 12 can flow into the hydraulic inner cavity 41, ensuring that the hydraulic inner cavity 41 can have high-pressure liquid, thereby realizing the oil supply of the accumulator 4 by the liquid storage structure 3. Thus, it is ensured that the oil can continuously and stably flow to the accumulator 4 and the hydraulic shock absorber 11 to support the normal work thereof.

[0066] Since the hydraulic inner cavity 41 is in communication with the oil inlet oil passage 12, the hydraulic inner cavity 41 is also in communication with the communication flow channel 1121, i.e. the hydraulic inner cavity 41 can also flow with the oil in the hydraulic damping chamber 111.

[0067] Further, the gas regulating pipeline 5 is used to regulate the gas pressure in the gas pressure inner cavity 42, i.e. the gas in the gas pressure inner cavity 42 can flow into the gas regulating pipeline 5 to release the gas in the gas pressure inner cavity 42 and reduce the gas pressure in the gas pressure inner cavity 42, or the gas regulating pipeline 5 can supplement the gas into the gas pressure inner cavity 42 to reduce the gas pressure in the gas pressure inner cavity 42. Thus, the gas pressure in the gas pressure inner cavity 42 can be flexibly adjusted, and the damage of the accumulator 4 caused by excessive gas pressure in the gas pressure inner cavity 42 can be avoided.

[0068] It should be noted that the oil flow or pressure in the hydraulic shock absorber 11 can be adjusted to flexibly adjust the stiffness of the hydraulic shock absorber 11, for example, when the oil pressure in the hydraulic shock absorber 11 increases or the oil flow increases, the damping force inside the hydraulic shock absorber 11 also increases accordingly, so that the response of the hydraulic shock absorber 11 to vibration is more hard, i.e. the stiffness of the hydraulic shock absorber 11 increases, and when the oil pressure in the hydraulic shock absorber 11 decreases or the oil flow decreases, the damping force inside the hydraulic shock absorber 11 also decreases accordingly, so that the response of the hydraulic shock absorber 11 to vibration is more soft, i.e. the stiffness of the hydraulic shock absorber 11 decreases. Thus, the oil flow or pressure in the hydraulic shock absorber 11 can be used to adjust the stiffness of the hydraulic shock absorber 11.

[0069] Specifically, when the piston 112 is compressed by the compression force, i.e. the piston 112 moves downward, the oil in the hydraulic damping chamber 111 is pressed to flow into the hydraulic inner chamber 41 through the communication flow channel 1121, so that the oil pressure in the hydraulic inner chamber 41 increases, at this time, the oil pressure is transmitted to the gas in the gas pressure inner chamber 42 through the movable element, causing the gas to be further compressed, so that the gas pressure also increases, and the gas pressure increases, the more the gas pressure increases, the greater the gas rebound force, and the gas rebound force can be transmitted to the oil in the hydraulic inner chamber 41 through the deformation of the movable element, and the oil is transmitted to the piston 112 through the oil in the hydraulic damping chamber 111, so that the piston 112 generates a compression resistance to prevent the piston 112 from being further compressed, so that the stiffness of the hydraulic damper 11 increases, and the compression resistance is proportional to the compression stroke of the piston 112, and the curve slope of the compression resistance and the compression stroke of the piston 112 is the stiffness value of the accumulator 4 fed back to the damping structure 1, so that the stiffness of the hydraulic damper 11 can be increased through the pressure transmission between the accumulator 4 and the hydraulic damper 11.

[0070] Correspondingly, when the piston 112 is restored, i.e. the piston 112 is stretched and moves upward, a negative pressure is generated in the hydraulic damping chamber 111 to make the oil in the accumulator 4 enter the hydraulic damping chamber 111 through the communication flow channel 1121, so that the amount of oil in the hydraulic inner chamber 41 decreases, and the oil pressure decreases, at this time, the movable element releases the deformation to move, so that the volume of the gas pressure inner chamber 42 increases, the gas pressure decreases, and the gas rebound force decreases, and the decreased gas rebound force can be transmitted to the oil in the hydraulic inner chamber 41 through the movable element, and the oil is transmitted to the piston 112 to generate a restoring force to the piston 112, the restoring force is in the same direction as the stretching direction of the piston 112, to help the piston 112 move upward to restore, so that the stiffness of the hydraulic damper 11 decreases, and the restoring force value is proportional to the restoring displacement of the piston 112, and the curve slope of the restoring force and the compression stroke of the piston 112 is the stiffness value of the accumulator 4 fed back to the damping structure 1, so that the stiffness of the hydraulic damper 11 can be reduced through the pressure transmission between the accumulator 4 and the hydraulic damper 11.

[0071] It can be understood that when a hydraulic damper 11 with larger stiffness is needed, the gas pressure in the gas pressure inner chamber 42 can be increased, and when a hydraulic damper 11 with smaller stiffness is needed, the gas pressure in the gas pressure inner chamber 42 can be decreased, so that the stiffness of the hydraulic damper 11 can be flexibly changed by flexibly changing the gas pressure in the gas pressure inner chamber 42, and when the gas pressure is determined, the gas pressure in the accumulator 4 can be locked to keep the gas pressure in the gas pressure inner chamber 42 stable, so as to lock the stiffness value of the hydraulic damper 11.

[0072] Thus, the pressure transmission can be achieved by the oil flow between the accumulator 4 and the hydraulic damper 11, and then the precise linear continuous adjustment of the stiffness of the hydraulic damper 11 can be achieved.

[0073] In some embodiments, as shown in Figures 1-3 The damping system 100 further comprises an air pump 6, and the gas adjusting pipeline 5 is provided with an air inlet 51 which is in communication with the air pump 6, and the air pump 6 is adapted to supply air into the air pressure inner cavity 42 through the gas adjusting pipeline 5.

[0074] Specifically, when the air pump 6 starts to work, the air pump 6 can pump air from the air inlet 51 into the gas adjusting pipeline 5, and then the air can enter the air pressure inner cavity 42 through the gas adjusting pipeline 5 to achieve air supply in the air pressure inner cavity 42, and then the adjustment of the air pressure in the air pressure inner cavity 42 can be achieved, so as to avoid the air pressure in the air pressure inner cavity 42 being too large or too small, and ensure the normal operation of the damping system 100, and the air pressure in the air pressure inner cavity 42 can also be adjusted as needed, so as to achieve the adjustment of the stiffness of the hydraulic damper 11 to achieve the required stiffness value.

[0075] In some embodiments, as shown in Figures 1-3 The gas adjusting pipeline 5 is provided with a gas storage tank 7, and the gas storage tank 7 can store a certain amount of air, and the gas storage tank 7 is located between the air pump 6 and the air pressure inner cavity 42, and the gas storage tank 7 is used to store the air pumped by the air pump 6 and to supply air to the air pressure inner cavity 42, that is, the air pumped by the air pump 6 can enter the gas storage tank 7 for storage, and then the air stored in the gas storage tank 7 can flow into the air pressure inner cavity 42 when needed.

[0076] In practice, when the air pressure in the air pressure inner cavity 42 is less than the set air pressure, that is, when the air pressure in the air pressure inner cavity 42 is too small, the gas storage tank 7 can be communicated with the air pressure inner cavity 42, so that the air in the gas storage tank 7 can be supplemented into the air pressure inner cavity 42 to increase the air pressure in the air pressure inner cavity 42, so that the air pressure reaches the set value.

[0077] In some embodiments, as shown in Figures 1-3 The gas adjusting pipeline 5 is further provided with a switch valve 52, and the switch valve 52 is arranged between the air pump 6 and the gas storage tank 7, that is, the communication or disconnection between the air pump 6 and the gas storage tank 7 can be achieved by opening and closing the switch valve 52, in practice, when the gas storage tank 7 is not full of air, the switch valve 52 can be opened and the air pump 6 can be started, so that the air pump 6 starts to work and the air pump 6 is in communication with the gas storage tank 7, so that the air pump 6 can pump air into the gas storage tank 7 for storage, until the gas storage tank 7 is full of air, and the switch valve 52 and the air pump 6 can be closed.

[0078] In actual design, asFigure 1 As shown, a second control valve 24 can also be arranged between the accumulator 4 and the gas tank 7, and the second control valve 24 is opened and closed to realize the connection or disconnection between the accumulator 4 and the gas tank 7. When the gas pressure in the gas pressure cavity 42 is less than the set gas pressure, i.e., the gas pressure in the gas pressure cavity 42 is too low, the second control valve 24 can be opened to connect the gas tank 7 with the gas pressure cavity 42, so that the gas in the gas tank 7 can be supplemented into the gas pressure cavity 42 to increase the gas pressure in the gas pressure cavity 42, so that the gas pressure reaches the set value. Meanwhile, when the gas pressure in the gas pressure cavity 42 is greater than the set gas pressure, i.e., the gas pressure in the gas pressure cavity 42 is too high, the second control valve 24 can also be opened, so that the gas in the gas pressure cavity 42 can be released into the gas tank 7.

[0079] In some embodiments, as shown, Figures 1-3 The damping system 100 further comprises a pressure relief valve 53 for monitoring and adjusting the gas pressure of the gas pressure cavity 42 of the accumulator 4. The gas adjusting pipeline 5 is provided with a pressure relief port 54 for connecting the pressure relief valve 53 with the gas adjusting pipeline 5, i.e., the pressure relief valve 53 is installed at the pressure relief port 54, and the gas can be discharged through the pressure relief valve 53.

[0080] Therefore, when the pressure relief valve 53 monitors that the gas pressure of the gas pressure cavity 42 of the accumulator 4 is within the set normal range or less than the set maximum value, the pressure relief valve 53 is in a closed state to ensure that the gas in the gas pressure cavity 42 does not flow out. When the pressure relief valve 53 monitors that the gas pressure of the gas pressure cavity 42 of the accumulator 4 is greater than the set maximum value, the pressure relief valve 53 is in an open state, and at this time, the gas in the gas pressure cavity 42 can flow through the gas adjusting pipeline 5 to the pressure relief valve 53 and be discharged from the pressure relief valve 53, thereby ensuring the normal work of the accumulator 4 and realizing the required stiffness adjustment.

[0081] In some embodiments, the damping system 100 further comprises a control module for controlling the liquid storage structure 3 to selectively supply oil to the oil inlet pipeline 12.

[0082] Specifically, the control module can monitor the working state of the damping system 100, and when the damping structure 1 needs to be started to work due to vibration or impact or the oil of the damping structure 1 is insufficient, the control module sends an instruction to the liquid storage structure 3 to make the liquid storage structure 3 supply oil to the oil inlet pipeline 12 for use by the hydraulic damper 11. When the oil of the damping structure 1 is sufficient, the control module sends an instruction to the liquid storage structure 3 to stop the supply of oil to the oil inlet pipeline 12 by the liquid storage structure 3.

[0083] and for controlling the gas adjusting pipeline 5 to selectively adjust the gas pressure in the gas pressure cavity 42.

[0084] Specifically, the control system can also monitor the gas pressure change of the gas pressure cavity 42, the control module can control the opening of the switch valve 52 and the starting of the air pump 6 when the gas pressure of the gas pressure cavity 42 is less than the set value, so that the air pump 6 can supply air to the gas pressure cavity 42, or the control module can control the closing of the switch valve 52 and the air pump 6 and the opening of the pressure relief valve 53 when the gas pressure of the gas pressure cavity 42 is greater than the set value, and instruct the pressure relief valve 53 to release the excess gas, thereby keeping the pressure in the gas pressure cavity 42 within the set range, ensuring the normal work of the accumulator 4 and realizing the required stiffness adjustment.

[0085] In some embodiments, as shown in Figures 1-3 The damping system 100 also includes a pressure detection member 55 for detecting the gas pressure in the gas pressure cavity 42, and the control module is adapted to control the gas adjusting pipeline 5 according to the detection result of the pressure detection member 55. In practice, the pressure detection member 55 can be configured as a pressure sensor or the like.

[0086] Specifically, the control module can receive the detection result from the pressure detection member 55 and process and analyze whether the detection result is within the set range. If the control module determines that the detection result is within the set range, the control module can control the switch valve 52, the air pump 6 and the pressure relief valve 53 in the gas adjusting pipeline 5 to be in the closed state. If the control module determines that the detection result is greater than the set value, the control module can control the switch valve 52 and the air pump 6 in the gas adjusting pipeline 5 to be in the closed state, and the pressure relief valve 53 to be in the open state, so that the excess gas in the gas pressure cavity 42 can be discharged through the pressure relief valve 53, thereby reducing the gas pressure in the gas pressure cavity 42, and further achieving smaller stiffness adjustment of the hydraulic damper 11. If the control module determines that the detection result is less than the set value, the control module can control the switch valve 52 and the air pump 6 in the gas adjusting pipeline 5 to be in the open state, and the pressure relief valve 53 to be in the closed state, so that the air pump 6 can pump air into the gas tank 7, and the gas tank 7 can supplement the gas in the gas pressure cavity 42, thereby increasing the gas pressure in the gas pressure cavity 42, and further achieving larger stiffness adjustment of the hydraulic damper 11.

[0087] The utility model also proposes a suspension assembly.

[0088] According to the suspension assembly of the utility model embodiment, the suspension assembly comprises the damping system 100 of any one of the above embodiments.

[0089] Specifically, as shown in Figure 4 The suspension assembly can include four suspension systems, each of which is installed between a corresponding four wheels and a vehicle body to support the vehicle body, buffer shocks, maintain vehicle driving stability and improve ride comfort.

[0090] The four suspension systems can include the damping system 100 described above, and as Figure 4 The damping structure 1 is located in the front-rear direction and the left-right direction, respectively, and the four suspension systems collectively form a suspension assembly, and the stiffness of the hydraulic dampers 11 in the damping system 100 can be independently linearly adjusted, so the stiffness of the four suspension systems can also be independently linearly adjusted, so that the entire suspension assembly can have different stiffness.

[0091] Therefore, the stiffness of each wheel suspension system can be controlled independently, and the stiffness adjustment of each wheel suspension system can be quickly completed, thereby greatly improving the ride comfort and stability of the vehicle.

[0092] The utility model further provides a vehicle.

[0093] The vehicle according to the utility model embodiment comprises the damping system 100 of any one of the above embodiments and the suspension assembly of any one of the above embodiments.

[0094] The damping system 100 or the suspension assembly with adjustable stiffness can ensure the stability and comfort of the vehicle under various working conditions and improve the use experience of the user.

[0095] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0096] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A vibration damping system, characterized by, The application relates to a shock absorber system. The shock absorber system comprises a liquid storage structure (3) and a plurality of shock absorber structures (1), each of which comprises a hydraulic shock absorber (11) connected with an oil inlet channel (12). The liquid storage structure (3) is used for selectively supplying oil to the oil inlet channel (12) of any one of the plurality of shock absorber structures (1). The shock absorber system further comprises a main oil channel (21) connected with the liquid storage structure (3) and a plurality of branch oil channels (22) connected with the main oil channel (21) and corresponding to the oil inlet channels (12) of the plurality of shock absorber structures (1) one by one.

2. The vibration damping system of claim 1, wherein Each of the branch oil channels (22) is provided with a first control valve (23) used for controlling the opening and closing of the corresponding branch oil channel (22).

3. The vibration reduction system of claim 2, wherein, The liquid storage structure (3) comprises a liquid storage pump (31) and a liquid storage pot (32), and the liquid storage pump (31) is used for pumping oil in the liquid storage pot (32) to the oil inlet channel (12).

4. The vibration reduction system of claim 1, wherein, The hydraulic shock absorber (11) has a hydraulic shock absorbing cavity (111), and is provided with a piston member (112) movable in the hydraulic shock absorbing cavity (111), and the piston member (112) is formed with a communication flow channel (1121) for communicating the oil inlet channel (12) with the hydraulic shock absorbing cavity (111).

5. The vibration reduction system of claim 1, wherein, The communication flow channel (1121) is vertically upwardly extended, and the top of the communication flow channel (1121) is communicated with the oil inlet channel (12) and the bottom of the communication flow channel (1121) is communicated with the hydraulic shock absorbing cavity (111).

6. The vibration reduction system of claim 5, wherein, The shock absorber structure (1) further comprises:

7. A vibration damping system according to any one of claims 1-6, characterized in that an accumulator (4) provided with a movable member, which divides an inner cavity in the accumulator (4) into a hydraulic inner cavity (41) and a gas pressure inner cavity (42), and the hydraulic inner cavity (41) is communicated with the oil inlet channel (12); a gas adjusting pipeline (5) used for adjusting the gas pressure in the gas pressure inner cavity (42). The shock absorber system further comprises an air pump (6), the gas adjusting pipeline (5) is provided with an air inlet (51) communicated with the air pump (6), and the air pump (6) is adapted to supply air to the gas pressure inner cavity (42) through the gas adjusting pipeline (5).

8. The vibration reduction system of claim 7, wherein, The gas adjusting pipeline (5) is provided with a gas storage tank (7) between the air pump (6) and the gas pressure inner cavity (42), and the gas storage tank (7) is used for storing the air pumped by the air pump (6) and supplying air to the gas pressure inner cavity (42).

9. The vibration reduction system of claim 8, wherein, The gas adjusting pipeline (5) is further provided with a switch valve (52) arranged between the air pump (6) and the gas storage tank (7).

10. The vibration reduction system of claim 9, wherein, ​ 11. The vibration reduction system of claim 10, wherein, The gas adjusting pipeline (5) is provided with a pressure relief port (54) for communicating the pressure relief valve (53) with the gas adjusting pipeline (5).

12. The vibration reduction system of claim 7, wherein, The control module is used for controlling the liquid storage structure (3) to selectively supply oil to the oil inlet pipeline (12), and for controlling the gas adjusting pipeline (5) to selectively adjust the gas pressure in the gas pressure inner cavity (42).

13. The vibration reduction system of claim 12, wherein, The control module is adapted to control the gas adjusting pipeline (5) according to the detection result of the pressure detection member (55).

14. A suspension assembly characterized by, The damping system of any one of claims 1-13.

15. A vehicle characterized by comprising: The damping system of any one of claims 1-13 and the suspension assembly of claim 14.

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