Hydrocarbon suspension device and vehicle

Abstract

The application provides an oil-gas suspension device and a vehicle, and relates to the technical field of vehicles. The vehicle comprises the oil-gas suspension device, the oil-gas suspension device comprises a power assembly, a vehicle frame and a damping assembly, the inside of the vehicle frame is provided with a mounting area capable of mounting at least part of the power assembly, the damping assembly comprises a tank body and a valve body, and the valve body is arranged in the mounting area. The tank body is provided with a sliding rod, the sliding rod can move relative to the tank body under the action of external force, so as to approach or move away from the mounting area in a first direction. The tank body can generate a damping force to attenuate the vibration or impact feedback of the vehicle frame in the first direction. The valve body is used for controlling the movement of the sliding rod in the first direction. The tank body and the valve body are arranged in a staggered manner in a horizontal direction and at least partially coincide in a vertical direction, so as to make full use of the operation space of the vehicle frame in each direction. The tank body and the valve body are arranged separately, so that the structure of the tank body and the valve body is simplified, and the tank body and the valve body are convenient to process and form.

Description

Technical Field

[0001] This invention belongs to the field of vehicle technology, and more specifically, relates to an oil-gas suspension device and a vehicle. Background Technology

[0002] An air suspension system is a device that buffers the impact forces transmitted from bumpy roads to the vehicle frame or body, damping the resulting vibrations to ensure a smooth ride. Air suspensions possess variable stiffness characteristics, improving vehicle stability on normal roads while reducing the risk of suspension failure due to impacts on bumpy surfaces, thus enhancing driver comfort and vehicle safety. However, the structure of air suspension systems is relatively complex, with numerous components, making them inconvenient to manufacture and assemble, as well as hindering inspection and maintenance. Summary of the Invention

[0003] In view of this, the present invention provides an oil-gas suspension device and vehicle to solve the technical problem of how to simplify the structure of the oil-gas suspension and facilitate its installation.

[0004] The technical solution provided by the embodiments of the present invention is implemented as follows:

[0005] This invention provides an oil-gas suspension device, comprising:

[0006] Powertrain

[0007] The chassis has a mounting area for mounting at least a portion of the powertrain;

[0008] A damping assembly includes a tank and a valve body; the valve body is located within the mounting area, the tank is provided with a slide rod, one end of the slide rod protruding from the frame in a first direction, the slide rod is used to move relative to the tank under the action of an external force to move closer to or further away from the mounting area in the first direction; the pressure of the tank is used to gradually reduce the movement of the slide rod towards the mounting area, and the valve body is used to control the movement of the slide rod in the first direction; the tank and the valve body are offset in the horizontal direction and at least partially overlap in the vertical direction, the first direction being in the horizontal direction.

[0009] In some embodiments, the mounting area extends along a second direction, which is in the horizontal direction and perpendicular to the first direction; multiple damping components are provided, and the multiple damping components are spaced apart in the second direction.

[0010] In some embodiments, the damping assembly includes a first conduit connecting the tank and the valve body, and the hydropneumatic suspension device further includes:

[0011] The pump body is provided with a second pipeline connecting multiple valve bodies. The pump body is electrically connected to at least one of the valve bodies on the same side in the first direction. The valve bodies control the connection or separation between the first pipeline and the second pipeline.

[0012] In some embodiments, the frame includes:

[0013] The first longitudinal beam extends along the second direction;

[0014] The second longitudinal beam is disposed opposite to and spaced apart from the first longitudinal beam in the first direction, and the installation area is formed between the first longitudinal beam and the second longitudinal beam.

[0015] Wherein, the tank extends along the first direction; one end of the tank in the first direction is connected to the first longitudinal beam, and the valve body is disposed on the side of the first longitudinal beam near the installation area in the first direction; and / or, one end of the tank in the first direction is connected to the second longitudinal beam, and the valve body is disposed on the side of the second longitudinal beam near the installation area in the first direction.

[0016] In some embodiments, the first longitudinal beam is provided with a limiting hole extending through in the first direction, and / or the second longitudinal beam is provided with a limiting hole extending through in the first direction; the tank body is inserted into the limiting hole.

[0017] In some embodiments, the valve body extends along the second direction and is located between the two end faces of the first longitudinal beam in the vertical direction.

[0018] In some embodiments, the powertrain includes a battery pack having at least two sets of the damping components between two sides of the battery pack in the second direction.

[0019] In some embodiments, the vehicle frame is provided with:

[0020] A connecting plate is connected to the battery pack on one side in the first direction and spaced apart from the vehicle frame on the other side; the connecting plate has a plurality of mounting positions spaced apart in the second direction for connecting the battery pack and the vehicle frame; the tank is spaced apart from the connecting plate in the first direction and is inserted between two adjacent mounting positions; the valve body is connected to one end of the connecting plate in the vertical direction.

[0021] In some embodiments, the connecting plate further includes:

[0022] A slot is provided through both ends of the connecting plate in the vertical direction; in the second direction, a slot is provided between each adjacent mounting position, and a valve body is provided between each two adjacent slots, with the end of the tank away from the slide rod in the first direction extending into the slot.

[0023] In some embodiments, the frame is provided on the side away from the mounting area in the first direction:

[0024] Multiple shock absorbers extend along the vertical direction; the multiple shock absorbers are at least disposed on both sides of the powertrain in the first direction, and at least disposed on both sides of the powertrain in the second direction.

[0025] This invention provides a vehicle including the aforementioned hydropneumatic suspension device.

[0026] This invention provides an hydropneumatic suspension device and a vehicle. The vehicle includes the hydropneumatic suspension device. The hydropneumatic suspension device includes a powertrain, a frame, and a damping assembly. An installation area is provided inside the frame, and the powertrain is at least partially located within the installation area. The damping assembly includes a tank and a valve body. The valve body is located within the installation area, and the frame can utilize its structural strength to horizontally protect the valve body and the powertrain. The horizontal direction includes a first direction. A movable sliding rod is provided inside the tank. One end of the sliding rod protrudes outward from the frame in the first direction, and the sliding rod can move relative to the tank under external force to move closer to or further away from the installation area in the first direction. The tank can generate damping force to attenuate vibration or impact feedback from the frame in the first direction. The valve body controls the movement of the sliding rod in the first direction, enabling the vehicle to drive safely and comfortably in various road conditions and scenarios. The tank and valve body are staggered in the horizontal direction to ensure that each has its own independent installation space, facilitating separate inspection and maintenance of the tank and valve body. The tank and valve body overlap at least partially in the vertical direction to fully utilize the height space of the vehicle frame for assembly, reducing the longitudinal volume of the damping assembly. The damping assembly fully utilizes the operating space in all directions of the vehicle frame, improving the space utilization rate of the hydropneumatic suspension system. Furthermore, the damping assembly is small in size and does not affect the layout of other components. Compared to embodiments where the valve body is located inside the tank, the damping assembly in this embodiment separates the working and control components, placing them separately in the tank and valve body. This eliminates the need for a pre-reserved sealing structure for the valve body inside the tank, and also eliminates the need to mold the valve body into a complex miniature structure, simplifying the structure of the tank and valve body and facilitating their manufacturing. On the other hand, since the valve body is located within the installation area, even if the sliding rod is subjected to a large external force and punctures the tank, the valve body will not fail. The valve body can still control the pump and pipeline to close, reducing the risk of air leakage, thus ensuring both driving comfort and driving safety. Attached Figure Description

[0027] Figure 1 This is a perspective view of the hydropneumatic suspension device in the embodiments of this application at an angle;

[0028] Figure 2 for Figure 1 Enlarged view of part A in the image;

[0029] Figure 3 This is a front view of the hydropneumatic suspension device in the embodiments of this application;

[0030] Figure 4 for Figure 3 A partial sectional view along the BB direction;

[0031] Figure 5 This is a perspective view of the hydropneumatic suspension device in the embodiments of this application from another angle;

[0032] Figure 6 for Figure 5 Enlarged view of section C in the image.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Powertrain; 11. Battery Pack; 2. Frame; 21. Mounting Area; 22. First Longitudinal Beam; 23. Second Longitudinal Beam; 24. Limiting Hole; 25. Connecting Plate; 251. Mounting Position; 252. Slot; 3. Damping Assembly; 31. Tank; 311. Working Piston; 312. Compensating Piston; 313. First Damping Chamber; 314. Second Damping Chamber; 315. Compensating Chamber; 316. Damping Hole; 32. Valve Body; 33. Slide Rod; 331. First End; 332. Second End; 34. First Pipeline; 35. Second Pipeline; 4. Shock Absorber. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0036] The specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features can form different embodiments and technical solutions. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this invention will not be described separately.

[0037] In the following description, the terms "first," "second," "etc." are used merely to distinguish different objects and do not indicate that the objects have the sameness or relationship. It should be understood that the directional descriptions "above," "below," "outside," and "inside" refer to the directions under normal use, while "left" and "right" refer to the left and right directions shown in the corresponding diagrams, which may or may not be the left and right directions under normal use.

[0038] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. "A plurality of" means two or more.

[0039] This invention provides a vehicle including a hydropneumatic suspension system, which enables the vehicle to maintain stable driving on normal roads while also buffering the impact forces transmitted to the frame or body from bumpy roads. It should be noted that the vehicle can be various types of vehicles such as sedans, commercial vehicles, trucks, buses, or SUVs. It is understood that the vehicle type in this invention does not limit the structure of the hydropneumatic suspension system. It should be explained that the impact force in the aforementioned "impact feedback" is limited to a certain range. This impact force is not sufficient to crush or deform the vehicle; it only causes the vehicle to suddenly lurch and sway, but does not affect the vehicle's driving ability. The aforementioned "bumpy road surface" refers to a road surface where a large portion is uneven and has significant vertical undulations relative to the horizontal plane.

[0040] This invention provides an oil-gas suspension device. Figure 1 This is a perspective view of the hydropneumatic suspension device in an embodiment of this application at one angle, with reference to... Figure 1 The hydropneumatic suspension system includes a powertrain 1, a frame 2, and a damping assembly 3. Because the hydropneumatic suspension system has an independent frame 2, the vehicle has a non-load-bearing body. Simply put, "load-bearing" means bearing load or carrying weight. The vehicle in this embodiment is a non-load-bearing vehicle, distinct from a load-bearing vehicle. That is, the main load-bearing component in the vehicle is the frame 2, and the body only bears the weight of the passengers and cargo. Flexible components such as flexible rubber pads are provided at the connection surface between the frame 2 and the body, which can reduce vibration feedback from bumpy roads to the interior of the vehicle, improving driving comfort.

[0041] The vehicle frame 2 has a mounting area 21, and the powertrain 1 is at least partially located within the mounting area 21. The powertrain 1 is a device capable of outputting power to the vehicle and driving it. The powertrain 1 includes an engine and / or an electric motor. That is, the vehicle can be a gasoline-powered vehicle, a new energy pure electric vehicle, or a hybrid vehicle. Regardless of the type of powertrain 1, at least a portion of the powertrain 1 (such as the battery pack 11 in this embodiment) is mounted within the mounting area 21.

[0042] Figure 2 for Figure 1 The enlarged view of part A in the image is shown below. Figure 2 The damping assembly 3 includes a tank 31 and a valve body 32, and a slide rod 33 is provided inside the tank 31. One end of the slide rod 33 protrudes outward from the outside of the frame 2 in a first direction, while the other end is disposed inside the tank 31. It should be noted that the aforementioned first direction is... Figure 2 In the N1 direction shown, the first direction is also the width direction of the frame. The aforementioned "outer side of the frame" refers to the side of the frame 2 whose outline boundary is away from the mounting area 21. Correspondingly, the side of the frame 2 whose outline boundary is closer to the mounting area 21 can be defined as the inner side of the frame. The slide bar 33 can move along the first direction N1 towards the mounting area 21 under the action of an external force. The external force driving the slide bar 33 to move along the first direction N1 towards the mounting area 21 can be a collision between the vehicle and other vehicles or road bollards in the first direction, or it can be the impact and vibration fed back to the first direction from a bumpy road surface. The pressure inside the tank 31 can gradually reduce the movement of the slide bar 33 towards the mounting area 21. That is to say, the tank 31 can generate a damping force, which can attenuate the vibration or impact feedback experienced by the vehicle in the first direction.

[0043] Reference Figure 2 The tank body 31 and the valve body 32 are offset in the horizontal direction and at least partially overlap in the vertical direction. It should be noted that the horizontal direction is an extended planar direction composed of a first direction and a second direction, wherein the second direction is perpendicular to the first direction. Figure 2 In the N2 direction shown, the second direction is also the length direction of the frame 2. The first direction is also horizontal; therefore, the damping component 3 can attenuate the vibration and impact feedback experienced by the vehicle in the horizontal direction. When the vehicle is traveling on bumpy roads, large bumps can easily cause horizontal collisions and vibrations between the side of the frame 2 and the side of the body, thus easily causing wear or impact on the side of the powertrain 1. The tank 31 attenuates vibration and impact feedback along the first direction, thereby protecting the powertrain 1 in the horizontal direction and reducing the risk of the powertrain 1 being worn and aged or even exploding due to horizontal impact. While extending the service life of the powertrain 1, the damping component 3 can flexibly buffer the vibration and impact feedback experienced by the vehicle in the first direction, so that the vehicle can balance driving safety and comfort.

[0044] Figure 3 This is a front view of the hydropneumatic suspension device in an embodiment of the present invention, with reference to... Figure 2 and Figure 3 The vertical direction is perpendicular to the horizontal direction, and the vertical direction is in Figure 3 In the N3 direction shown, the vertical direction N3 is also the height direction of the frame 2. Simply put, the horizontal direction is parallel to the horizontal ground, and the vertical direction is perpendicular to the horizontal ground. It can be understood that the ground may have uneven areas, meaning the horizontal ground does not need to be perfectly level. Therefore, the corresponding vertical direction does not need to be perfectly vertical; errors in ground levelness are permissible, as long as it is approximately horizontal and vertical. The horizontal misalignment of the tank 31 and valve body 32 indicates that their vertical projections can be spaced along the N1 direction, along the N2 direction, or both. Regardless of their horizontal arrangement, the tank 31 and valve body 32 are horizontally aligned as shown... Figure 2 The misalignment shown ensures that both the tank 31 and the valve body 32 have independent installation space, facilitating their placement. The fact that the tank 31 and valve body 32 at least partially overlap vertically means that their horizontal projections at least partially overlap, fully utilizing the height space of the frame 2 for assembly and reducing the longitudinal volume of the damping assembly 3. The damping assembly 3 in this embodiment has a simple structure, facilitating the separate processing and forming of the tank 31 and valve body 32, and allowing for their separate assembly onto the frame 2, thus improving the assembly efficiency of the damping assembly 3. Furthermore, the damping assembly 3 fully utilizes the operating space in all directions of the frame 2, improving the space utilization of the hydropneumatic suspension system and facilitating the placement of other components.

[0045] For ease of explanation, the working principle of damping component 3 will be explained below. Figure 4 for Figure 3 A partial sectional view along the BB direction, see reference. Figure 4 The end of the slide rod 33 protruding from the outside of the frame 2 is defined as the first end 331, and the end of the slide rod 33 inside the tank 31 is defined as the second end 332. Under impact or vibration, the first end 331 receives external force, and the slide rod 33 moves towards the mounting area 21. The pressure of the tank 31 can gradually reduce the movement of the slide rod 33 towards the mounting area 21. In other words, the tank 31 can generate damping force to attenuate the vibration or impact feedback from the first end 331 to the second end 332.

[0046] It should be noted that this application does not limit the specific structure of the tank 31, as long as the tank 31 can generate damping force. For example, the tank 31 can be configured as a gas spring structure as shown in the schematic diagram of this invention. In some embodiments shown in the schematic diagram of this invention, refer to... Figure 4 The tank body 31 is equipped with a working piston 311 and a compensating piston 312. The working piston 311 is connected to the second end 332 of the slide rod 33. Both the working piston 311 and the compensating piston 312 can reciprocate along the first direction N1. The working piston 311 and the compensating piston 312 divide the internal cavity of the tank body 31 into a first damping cavity 313, a second damping cavity 314, and a compensating cavity 315. The first damping cavity 313 and the second damping cavity 314 are filled with oil, and the compensating cavity 315 is filled with an inert gas (such as nitrogen). The first damping cavity 313 and the second damping cavity 314 are distributed on both sides of the working piston 311 in the first direction, and the working piston 311 has a damping hole 316 extending through it along the first direction. The first end 331 moves towards the mounting area 21 under the action of an external force, causing the working piston 311 to move towards the compensating piston 312. The volume of the second damping chamber 314 is compressed, allowing some of the oil in the second damping chamber 314 to enter the first damping chamber 313 through the damping hole 316. The oil flow resistance at the damping hole 316 resists the movement of the working piston 311, producing a damping buffering effect. Then, under the action of the valve body 32, the volume in the compensating chamber 315 gradually approaches equilibrium from compression, and the working piston 311 resets under the action of the pressure difference, that is, the slide rod 33 moves away from the mounting area 21 and resets.

[0047] It should be noted that the hydraulic spring structure shown in the schematic diagram of this invention is a single-chamber separated hydraulic spring structure. In actual working conditions, users can also select other types of hydraulic springs according to their actual needs, such as single-chamber non-separated type, double-chamber separated type, double-chamber non-separated type, etc. The damping hole 316 is a micro-hole in actual working conditions. For ease of reference, the schematic diagram of this invention exaggerates the damping hole 316.

[0048] The valve body 32 can control the movement of the slide rod 33 in a first direction. For example, the valve body 32 can drive the slide rod 33 to move closer to the mounting area 21, drive the slide rod 33 to move away from the mounting area 21, or keep the slide rod 33 stationary. For ease of explanation, "moving the slide rod 33 closer to the mounting area 21" can be understood as the slide rod 33 moving inward; correspondingly, "moving the slide rod 33 away from the mounting area 21" can be understood as the slide rod 33 moving outward. After the slide rod 33 moves inward under external force, the valve body 32 can control other components (such as the pump body) to pressurize the compensation chamber 315. The pressure drives the slide rod 33 to move outward and reset. When the vehicle is driving in a narrow lane, the valve body 32 electrically controls the pressure in the compensation chamber 315 to adjust the length of the first end 331 extending outward from the frame 2, reducing the risk of the vehicle being scratched. When the vehicle is driving on a curve... In normal conditions, valve body 32 can control the slide rod 33 to move inward to reduce the tilt angle of the frame 2, thereby reducing the risk of excessive vehicle offset or even tilting and overturning. When the vehicle is under load or loading / unloading conditions, valve body 32 can control the slide rod 33 to remain stationary, and the damping component 3 switches from flexible to rigid to maintain stable low-speed driving. When the vehicle is about to travel on a bumpy road, valve body 32 can control the slide rod 33 to move outward to increase the displacement available for the slide rod 33 to slide, allowing the slide rod 33 to significantly attenuate the impact and vibration feedback transmitted to the frame 2 from the bumpy road in the horizontal direction, reducing the risk of the hydropneumatic suspension being damaged by a large impact. In other words, valve body 32 can adjust the position of the slide rod 33 to enable the vehicle to handle various road conditions and driving scenarios.

[0049] Understandable, refer to Figure 2 The valve body 32 integrates multiple control valves, which work together to adjust the air pressure, thereby adjusting the movement of the slide bar 33 in the first direction. The tank body 31, however, does not contain any control valves; it only serves as a damping drive source. In other words, the tank body 31 is a working component, while the valve body 32 is a control component. Compared to embodiments where the valve body 32 is located inside the tank body 31, the damping assembly 3 in this embodiment separates the working and control components. The installation spaces for the tank body 31 and the valve body 32 are independent, allowing workers to assemble them in sections. Then, the tank body 31 and the valve body 32 can be assembled onto the vehicle frame, improving the assembly efficiency of the damping assembly 3. There is no need to reserve a sealing structure for the valve body 32 inside the tank body 31, nor is it necessary to form the valve body 32 into a miniature structure that is difficult to process. This simplifies the structure of the tank body 31 and the valve body 32, making it easier to process and form the tank body 31 and the valve body 32, and also making it easier to inspect and replace damaged parts of the tank body 31 and the valve body 32 respectively.

[0050] Reference Figure 2The valve body 32 is located within the installation area 21, meaning it is protected by the frame 2. Even when the vehicle travels on bumpy roads or is impacted, both the frame 2 and the tank 31 provide horizontal protection for the valve body 32. While the tank 31 absorbs some of the impact and vibration energy through the movement of the slide bar 33, the frame 2 can also absorb some of the impact and vibration energy using its own structure, reducing the risk of damage, failure, or even explosion of the valve body 32. Even if the slide bar 33 is subjected to a large external force and penetrates the tank 31, the valve body 32 will not fail, thus reducing the maintenance costs of the damping assembly 3. Furthermore, after the tank 31 is penetrated, the valve body 32 can be de-energized and closed, reducing the risk of leakage from the pump and pipelines, saving energy, and lowering the risk of explosion of the hydropneumatic suspension system.

[0051] In summary, this invention provides an hydropneumatic suspension device, which includes a powertrain 1, a frame 2, and a damping assembly 3. The frame 2 has an inner mounting area 21, and the powertrain 1 is at least partially disposed within the mounting area 21. The damping assembly 3 includes a tank 31 and a valve body 32. The valve body 32 is disposed within the mounting area 21. Therefore, the frame 2 can utilize its structural strength to protect the valve body 32 and the powertrain 1 in the horizontal direction. The horizontal direction includes a first direction. A movable sliding rod 33 is provided within the tank 31. One end of the sliding rod 33 protrudes outward from the frame 2 in the first direction, and the sliding rod 33 can move relative to the tank 31 under external force to move closer to or further away from the mounting area 21 in the first direction. The pressure in the tank 31 can gradually reduce the movement of the sliding rod 33 towards the mounting area 21; that is, the tank 31 can generate damping force to attenuate vibration or impact feedback from the frame 2 in the first direction. The valve body 32 is used to control the movement of the slide bar 33 in the first direction, including but not limited to controlling the slide bar 33 to move away from the mounting area 21, controlling the slide bar 33 to move closer to the mounting area 21, and controlling the slide bar 33 to remain stationary. The valve body 32 can adjust the position of the slide bar 33 so that the vehicle can drive safely in various road conditions and scenarios.

[0052] The tank body 31 and valve body 32 are horizontally offset, allowing each to have its own independent installation space, facilitating separate maintenance and replacement of damaged parts. The tank body 31 and valve body 32 are at least partially overlapped vertically to fully utilize the height space of the frame 2 for assembly, and to reduce the longitudinal volume of the damping assembly 3. The damping assembly 3 fully utilizes the operating space in all directions of the frame 2, improving the space utilization rate of the hydropneumatic suspension system. Furthermore, the small size of the damping assembly 3 does not affect the layout of other components. Compared to the embodiment where the valve body 32 is located inside the tank 31, the damping assembly 3 in this embodiment separates the working components and the control components, with the tank 31 and valve body 32 respectively installed. This eliminates the need for a pre-installed sealing structure for the valve body 32 inside the tank 31, and also avoids molding the valve body 32 into a complex microstructure, simplifying the structure of the tank 31 and valve body 32 and facilitating their fabrication. Furthermore, since the valve body 32 is located within the mounting area 21, even if the slide rod 33 is subjected to a large external force and punctures the tank 31, the valve body 32 will not fail. This reduces the maintenance costs of the damping assembly 3's components and lowers the risk of pump and pipeline leaks, allowing the vehicle to balance driving comfort and safety.

[0053] In some embodiments, refer to Figure 1 The mounting area 21 extends along the second direction N2. It should be noted that the extending direction of the mounting area 21 represents the direction of its maximum dimension. In this embodiment of the invention, the direction of the maximum dimension of the mounting area 21 is the length direction of the mounting area 21, that is, the length direction of the mounting area 21 is along the second direction N2. (Refer to...) Figure 2 Multiple damping components 3 are provided, and the multiple damping components 3 are spaced apart on the second direction N2. The multiple damping components 3 together cover the length direction of the mounting area 21, thereby increasing the coverage area of ​​the damping action point of the hydropneumatic suspension device on the side of the mounting area 21, improving the protection effect of the hydropneumatic suspension device on the mounting area 21 in the horizontal direction, and thus improving the safety of the powertrain 1 and the valve body 32.

[0054] In some embodiments, refer to Figure 2The damping component 3 includes a first pipe 34 connecting the tank 31 and the valve body 32. The hydropneumatic suspension device also includes a pump body (not shown in the figure), which has a second pipe 35 connecting the valve body 32 and the pump body. As can be understood from the above embodiments, the first pipe 34 connects the tank 31 and the valve body 32 on the inner side of the frame 2, and the second pipe 35 also connects the valve body 32 and the pump body on the inner side of the frame 2. That is to say, both the first pipe 34 and the second pipe 35 are located in the mounting area 21. The damping force of the tank 31 and the structure of the frame 2 itself can protect the first pipe 34 and the second pipe 35 in the horizontal direction, reducing the risk of the first pipe 34 and the second pipe 35 being damaged by vibration or impact. The valve body 32 controls the connection or separation of the first pipeline 34 and the second pipeline 35. When it is necessary to attenuate the impact and vibration feedback in the first direction, the valve body 32 controls the connection of the first pipeline 34 and the second pipeline 35 to buffer the inward movement of the slide bar 33 in the first direction and adjust the position of the slide bar 33. When the vehicle is lifting heavy loads or loading and unloading goods, the valve body 32 controls the separation of the first pipeline 34 and the second pipeline 35, and the force exerted by the tank body 31 on the slide bar 33 changes from flexible to rigid to maintain the stability of the goods.

[0055] The pump body is electrically connected to at least one plurality of valve bodies 32 on the same side of the first direction. When all valve bodies 32 are located on the same side of the frame 2, there is one pump body, and one pump body is electrically connected to the aforementioned plurality of valve bodies 32. When the plurality of valve bodies 32 are respectively located on both sides of the frame 2 in the first direction, there are two pump bodies; the plurality of valve bodies 32 on one side of the frame 2 are electrically connected to one pump body, and the plurality of valve bodies 32 on the other side of the frame 2 are electrically connected to another pump body. Regardless of where the plurality of valve bodies 32 are located on the frame 2, at least one plurality of valve bodies 32 are electrically connected to one pump body. One pump body can simultaneously pressurize multiple sets of damping components 3, saving energy consumption and facilitating pump body layout and assembly.

[0056] In some embodiments, refer to Figure 1 The frame 2 includes a first longitudinal beam 22 and a second longitudinal beam 23, both extending along a second direction N2. The second longitudinal beam 23 is opposite to and spaced apart from the first longitudinal beam 22 along a first direction N1. That is, ignoring the thickness of the first longitudinal beam 22 and the second longitudinal beam 23, the first longitudinal beam 22 and the second longitudinal beam 23 are parallel and spaced apart along the first direction N1. The gap between the first longitudinal beam 22 and the second longitudinal beam 23 forms an installation area 21, that is, the inner sides of the first longitudinal beam 22 and the second longitudinal beam 23 enclose the side boundary of the installation area 21. The tank body 31 extends along a first direction; therefore, the slide bar 33 and the tank body 31 are both arranged perpendicular to the first longitudinal beam 22 and the second longitudinal beam 23, facilitating uniform stress distribution on the first longitudinal beam 22 and the second longitudinal beam 23.

[0057] In some embodiments, refer to Figure 1The tank body 31 is connected to the first longitudinal beam 22 at one end in the first direction, and the valve body 32 is located on the side of the first longitudinal beam 22 near the mounting area 21 in the first direction. In this embodiment, the damping component 3 is located on one side of the powertrain 1 in the first direction. Figure 1 (On the left side of powertrain 1), damping component 3 attenuates vibration or impact feedback at the first longitudinal beam 22.

[0058] Of course, in some embodiments, the tank body 31 can also be connected to the second longitudinal beam 23 at one end in the first direction, and the valve body 32 is located on the side of the second longitudinal beam 23 near the mounting area 21 in the second direction. In this embodiment, the damping assembly 3 is located on the other side of the powertrain 1 in the first direction. Figure 1 On the right side of the powertrain 1, the damping assembly 3 attenuates vibration or impact feedback at the second longitudinal beam 23. In some embodiments, multiple tanks 31 may be connected at one end in the first direction to the first longitudinal beam 22 and the second longitudinal beam 23 respectively, and multiple valve bodies 32 may be disposed on the inner sides of the first longitudinal beam 22 and the second longitudinal beam 23 respectively. In this embodiment, the damping assembly 3 attenuates vibration or impact feedback on both sides of the powertrain 1 in the first direction, and the damping assembly 3 provides bidirectional protection for the powertrain 1 in the first direction. However, regardless of which embodiment the damping assembly 3 is configured in, the damping assembly 3 can protect the powertrain 1 in the horizontal direction.

[0059] In some embodiments, refer to Figure 2 The first longitudinal beam 22 is provided with a limiting hole 24 extending through in the first direction, and the tank body 31 is inserted into the limiting hole 24 in the first longitudinal beam 22. Of course, in some embodiments, the second longitudinal beam 23 may also have a limiting hole 24 extending through in the first direction. In this embodiment, the tank body 31 is inserted into the limiting hole 24 in the second longitudinal beam 23. Alternatively, both the first longitudinal beam 22 and the second longitudinal beam 23 may have limiting holes 24 extending through in the first direction, and multiple tank bodies 31 may be inserted into the limiting holes 24 in the first longitudinal beam 22 and the second longitudinal beam 23, respectively. Regardless of which embodiment the tank body 31 is provided in, the tank body 31 is located between the two ends of the first longitudinal beam 22 (or the second longitudinal beam 23) in the vertical direction. That is to say, the volume of the tank body 31 does not affect the height of the first longitudinal beam 22 and the second longitudinal beam 23, and will not increase the height of the first longitudinal beam 22 and the second longitudinal beam 23. There is no need to provide additional structures for installing the tank 31 at the top and bottom of the first longitudinal beam 22 and the second longitudinal beam 23. Assembly of the tank 31 can be achieved simply by opening a limiting hole 24 through the first longitudinal beam 22 (and / or the second longitudinal beam 23). This facilitates the machining of the first longitudinal beam 22 and the second longitudinal beam 23, resulting in a simple structure and ease of implementation. For ease of explanation, all the following embodiments will use the example of the tank 31 being inserted into the limiting hole 24 within the first longitudinal beam 22.

[0060] In some embodiments, refer to Figure 2The valve body 32 extends along the second direction, meaning its length is oriented in the second direction. Both the length of the valve body 32 and the length of the mounting area 21 are in the second direction, facilitating the full utilization of the mounting area 21's length space for valve body 32 placement. The valve body 32 is located between the two vertical ends of the first longitudinal beam 22. This can be understood as the valve body 32 being placed laterally, unlike its longitudinal placement, allowing for a larger valve body 32 to integrate multiple control valves. The valve body 32's volume does not occupy the height space of the two longitudinal beams. Similarly, the tank body 31's volume also does not occupy the height space of the two longitudinal beams. While fully utilizing the height space of the frame 2 to place the damping assembly 3, the damping assembly 3 maintains a small longitudinal volume, not interfering with the placement of other components or the connection between the frame 2 and the vehicle body.

[0061] In some embodiments, refer to Figure 1 The powertrain 1 includes a battery pack 11, meaning that the vehicle in this embodiment is a hybrid vehicle or a pure electric vehicle. Two sets of damping components 3 are provided between the two sides of the battery pack 11 in the second direction. These two sets of damping components 3 cover the battery pack 11 along the second direction to provide sufficient protection for the battery pack 11 in the horizontal direction and reduce the risk of damage to the battery pack 11. Of course, three or four sets of damping components 3 can also be provided between the two sides of the battery pack 11 in the second direction. This application does not limit the number of damping components 3, but at least two sets of damping components 3 can cover the sides of the battery pack 11 in the second direction to increase the damping buffer position of the hydropneumatic suspension device in the second direction. Multiple sets of damping components 3 share the load in the second direction, improving the safety of the battery pack 11.

[0062] Figure 5 This is a perspective view of the hydropneumatic suspension device in the embodiments of this application from another angle. Figure 6 for Figure 5 Enlarged view of section C, in some embodiments, refer to Figure 5 and Figure 6 The frame 2 is provided with a connecting plate 25. One side of the connecting plate 25 in a first direction is connected to the battery pack 11, and the other side is spaced apart from the frame 2. The connecting plate 25 has multiple mounting positions 251 spaced apart in a second direction. These mounting positions 251 can be used as follows: Figure 5 The schematic diagram shows the connection of screws, bolts and other connectors. Of course, the mounting position 251 can also be connected by rivets or welds. The battery pack 11 is connected to the frame 2 through the connecting plate 25.

[0063] Reference Figure 6The tank 31 is spaced apart from the connecting plate 25 in the first direction. The space between the tank 31 and the connecting plate 25 in the first direction allows the first pipeline 34 to connect to the tank 31. In the event of a puncture in the tank 31, this space can also absorb some of the impact energy, reducing the risk of the punctured tank 31 crushing the connecting plate 25. The tank 31 is inserted between two adjacent mounting positions 251, avoiding the mounting positions 251 when connecting to the vehicle frame 2, so that the battery pack 11 is evenly loaded, maintaining the connection stability between the battery pack 11 and the vehicle frame 2. Furthermore, the mounting positions 251 are distributed on both sides of the tank 31 in the second direction. Even if the tank 31 is punctured, the connecting plate 25 is still evenly loaded, thereby maintaining the connection stability between the connecting plate 25 and the vehicle frame 2 and reducing the risk of the connecting plate 25 being crushed by the tank 31. (Refer to...) Figure 2 The valve body 32 is located at one end of the connecting plate 25 in the vertical direction. The connecting plate 25 provides a support position for the valve body 32, which facilitates the assembly of the valve body 32.

[0064] In some embodiments, refer to Figure 6 The connecting plate has multiple slots 252, which penetrate both ends of the connecting plate 25 in the vertical direction, i.e., the slots 252 penetrate both the upper and lower ends of the connecting plate 25. In the second direction, a slot 252 is provided between each adjacent mounting position 251, and a valve body 32 is provided between each two adjacent slots 252. It can be understood that the valve body 32 and the tank 31 are staggered in both the first and second directions, increasing the horizontal distance between the valve body 32 and the tank 31, which facilitates the connection of the first pipeline 34. At the same time, the staggered arrangement of the tank 31 and the valve body 32 in the second direction also reduces the risk that the tank 31, which is punctured in the first direction, will crush the valve body 32.

[0065] The end of the tank 31 near the installation area 21 in the first direction extends into the slot 252. The volume of the tank 31 in the first direction is sufficient for the slide bar 33 to slide. The fact that the end of the tank 31 in the first direction extends into the slot 252 makes the volume of the tank 31 in the first direction larger, which facilitates the movement of the slide bar 33 in the first direction, thereby improving the flexible buffering effect of the damping component 3.

[0066] In some embodiments, refer to Figure 1Multiple shock absorbers 4 are provided on the side of the frame 2 away from the mounting area 21 in the first direction, and extend vertically. That is, the multiple shock absorbers 4 are longitudinally arranged on the outer side of the frame 2. The shock absorbers 4 can buffer and adjust the vibration and impact feedback of the frame 2 in the vertical direction. At the same time, the shock absorbers 4 can also adjust the vehicle height so that the vehicle can be compatible with various road surfaces. It should be noted that this application does not limit the specific number of shock absorbers 4. For example, the shock absorbers 4 can be four, five, six, etc. But at least, the powertrain 1 has one shock absorber 4 on each side in the first direction, and the powertrain 1 also has one shock absorber 4 on each side in the second direction. That is, there are at least four shock absorbers 4, which are arranged around the powertrain 1. The multiple shock absorbers 4 support the frame 2 in the circumferential direction of the powertrain 1 to jointly protect the powertrain 1 in the vertical direction, reduce the risk of damage to the powertrain 1, and improve the vehicle's driving stability and safety.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A hydropneumatic suspension device, characterized in that, include: Powertrain The chassis has a mounting area for mounting at least a portion of the powertrain; A damping assembly includes a tank and a valve body; the valve body is located within the mounting area, the tank is provided with a slide rod, one end of the slide rod protruding from the frame in a first direction, the slide rod is used to move relative to the tank under the action of an external force to move closer to or further away from the mounting area in the first direction; the pressure of the tank is used to gradually reduce the movement of the slide rod towards the mounting area, and the valve body is used to control the movement of the slide rod in the first direction; the tank and the valve body are offset in the horizontal direction and at least partially overlap in the vertical direction, the first direction being in the horizontal direction; The mounting area extends along a second direction, which is in the horizontal direction and perpendicular to the first direction. The damping components are provided in multiple ways, and the multiple damping components are spaced apart in the second direction; The vehicle frame includes: The first longitudinal beam extends along the second direction; The second longitudinal beam is disposed opposite to and spaced apart from the first longitudinal beam in the first direction, and the installation area is formed between the first longitudinal beam and the second longitudinal beam. Wherein, the tank extends along the first direction; one end of the tank in the first direction is connected to the first longitudinal beam, and the valve body is disposed on the side of the first longitudinal beam near the installation area in the first direction; and / or, one end of the tank in the first direction is connected to the second longitudinal beam, and the valve body is disposed on the side of the second longitudinal beam near the installation area in the first direction.

2. The hydropneumatic suspension device according to claim 1, characterized in that, The damping assembly includes a first pipeline connecting the tank and the valve body, and the hydropneumatic suspension device further includes: The pump body is provided with a second pipeline connecting multiple valve bodies. The pump body is electrically connected to at least one of the valve bodies on the same side in the first direction. The valve bodies control the connection or separation between the first pipeline and the second pipeline.

3. The hydropneumatic suspension device according to claim 1, characterized in that, The first longitudinal beam is provided with a limiting hole that extends through in the first direction, and / or the second longitudinal beam is provided with a limiting hole that extends through in the first direction; the tank body is inserted into the limiting hole.

4. The hydropneumatic suspension device according to claim 1, characterized in that, The valve body extends along the second direction and is located between the two end faces of the first longitudinal beam in the vertical direction.

5. The hydropneumatic suspension device according to claim 1, characterized in that, The powertrain includes a battery pack, and at least two sets of the damping components are provided between the two sides of the battery pack in the second direction.

6. The hydropneumatic suspension device according to claim 5, characterized in that, The vehicle frame is equipped with: A connecting plate is connected to the battery pack on one side in the first direction and spaced apart from the vehicle frame on the other side; the connecting plate has a plurality of mounting positions spaced apart in the second direction for connecting the battery pack and the vehicle frame; the tank is spaced apart from the connecting plate in the first direction and is inserted between two adjacent mounting positions; the valve body is connected to one end of the connecting plate in the vertical direction.

7. The hydropneumatic suspension device according to claim 6, characterized in that, The connecting plate is also provided with: A slot is provided through both ends of the connecting plate in the vertical direction; in the second direction, a slot is provided between each adjacent mounting position, and a valve body is provided between each two adjacent slots, with the end of the tank away from the slide rod in the first direction extending into the slot.

8. The hydropneumatic suspension device according to claim 1, characterized in that, The frame is provided on the side away from the mounting area in the first direction: Multiple shock absorbers extend along the vertical direction; the multiple shock absorbers are at least disposed on both sides of the powertrain in the first direction, and at least disposed on both sides of the powertrain in the second direction.

9. A vehicle, characterized in that, Includes the hydropneumatic suspension device according to any one of claims 1 to 8.

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