Hydraulic suspension pressure regulating device and debugging method

Abstract

The invention discloses a hydraulic suspension pressure regulating device and a debugging method, and relates to the technical field of vehicles, the hydraulic suspension pressure regulating device comprises a barrel, a piston part, a connecting part and a pressure detection mechanism, by arranging a piston cavity and the piston part, hydraulic fluid in the piston cavity can be injected into a hydraulic pipeline through the piston part to increase the pressure, and the hydraulic suspension pressure can be adjusted; and hydraulic liquid in the hydraulic pipeline can be pumped into the piston cavity to reduce the pressure, so that the pre-charging pressure of the hydraulic pipeline can be quickly adjusted. Compared with a traditional scheme, the hydraulic fluid in the hydraulic pipeline does not need to be emptied and then vacuumized for filling, and the pressure regulating time of the hydraulic fluid is greatly shortened. Compared with external filling equipment, the hydraulic suspension pressure regulating device is compact in structure, the mounting positions and the mounting number can be flexibly arranged according to pressure regulating requirements, mounting conditions and the like, the pressure of a hydraulic pipeline can be regulated and self-checked and verified anytime and anywhere, and the debugging period is greatly shortened.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a hydraulic suspension pressure adjustment device and adjustment method. Background Technology

[0002] An active suspension system is a new type of computer-controlled suspension system that uses sensors to monitor the vehicle's condition in real time and dynamically adjusts parameters such as suspension height, shape, and damping to reduce vehicle vibration and positional changes, thereby improving handling stability and ride comfort. Active suspension systems are divided into three categories: hydraulic control, air suspension, and electromagnetic induction, which achieve adjustment through hydraulic oil, air pressure changes, and electromagnetic fluid characteristics, respectively.

[0003] The active hydraulic suspension system is a closed-loop hydraulic system. Before mass production, the pre-charge pressure of the active hydraulic suspension system needs to be adjusted multiple times to match a system suitable for the vehicle model. In existing technologies, the active hydraulic suspension system requires frequent vacuuming and refilling during the adjustment phase, with refilling performed using external equipment, resulting in a lengthy adjustment period. Furthermore, the vehicle needs to be taken out for adjustment during this phase, and carrying external refilling equipment presents significant inconvenience. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, in a first aspect, the present invention proposes a hydraulic suspension pressure adjusting device that can overcome the shortcomings of external injection equipment for suspension pressure adjustment.

[0005] Secondly, the present invention proposes a debugging method for using the above-mentioned hydraulic suspension pressure regulating device.

[0006] A hydraulic suspension pressure adjusting device according to a first aspect of the present invention includes: A cylindrical body, wherein the cylindrical body is provided with a piston chamber; A piston section is slidably disposed in the piston chamber, and the piston section is provided with an adjusting rod that extends out of the outer side of the cylinder; A connecting part is connected to the cylinder body, and the interior of the connecting part defines a connecting channel. The first end of the connecting channel communicates with the piston chamber, and the second end of the connecting channel is configured to connect to a hydraulic pipeline. A pressure detection mechanism configured to detect the pressure of the connection channel.

[0007] The hydraulic suspension pressure adjusting device according to the first aspect of the present invention has at least the following beneficial effects: The hydraulic suspension pressure regulating device of this embodiment, by setting up a piston chamber and a piston section, can both increase the pressure by adding hydraulic fluid from the piston chamber into the hydraulic pipeline using the piston section, and decrease the pressure by drawing hydraulic fluid from the hydraulic pipeline into the piston chamber, thus achieving rapid adjustment of the pre-charge pressure of the hydraulic pipeline. Compared with traditional solutions, there is no need to empty the hydraulic fluid in the hydraulic pipeline and then vacuum it for refilling, which greatly shortens the pressure regulating time. Compared with external filling equipment, the hydraulic suspension pressure regulating device of this embodiment has a compact structure, and the installation position and quantity can be flexibly arranged according to pressure regulating needs and installation conditions. It can adjust and self-check the pressure of the hydraulic pipeline anytime and anywhere, greatly shortening the commissioning cycle.

[0008] According to some embodiments of the present invention, the cylinder and the adjusting rod are threaded together, and the adjusting rod is configured to slide by rotating the piston portion.

[0009] According to some embodiments of the present invention, the hydraulic suspension pressure regulating device further includes an opening and closing mechanism configured to adjust the opening or closing of the connection channel.

[0010] According to some embodiments of the present invention, the connecting portion is provided with a mounting cavity, the mounting cavity having an opening exposed on the surface of the connecting portion, and the opening and closing mechanism includes: A valve core is disposed within the mounting cavity. The valve core has a first state and a second state. When the valve core is in the first state, the connection channel is open. When the valve core is in the second state, the connection channel is closed. A plug is provided at the opening and is configured to be removable to expose the valve core, allowing the valve core to be operated for state switching.

[0011] According to some embodiments of the present invention, the valve core is threadedly connected to the connecting portion, and the valve core is configured to move relative to the connecting portion by rotation to perform state switching.

[0012] According to some embodiments of the present invention, the connecting channel includes a first channel, the axis of the first channel being angularly positioned relative to the axis of the piston chamber, wherein the angle is greater than 0° and less than 180°, the two ends of the first channel are connected to the hydraulic pipeline, and the piston chamber is connected to the middle position of the first channel in the axial direction.

[0013] According to some embodiments of the present invention, a plurality of guide rings are provided on the periphery of the piston portion, the guide rings are attached to the sidewall of the piston cavity, and the plurality of guide rings are arranged at intervals along the axial direction of the cylinder.

[0014] According to some embodiments of the present invention, the hydraulic suspension pressure regulating device is configured to slide the piston portion by pulling the adjusting rod, thereby injecting hydraulic fluid from the piston chamber into the connecting channel or drawing hydraulic fluid from the connecting channel into the piston chamber, thereby regulating the pressure of the hydraulic pipeline.

[0015] According to a second aspect of the present invention, a hydraulic suspension adjustment method, using the aforementioned hydraulic suspension pressure adjusting device, includes: Hydraulic fluid is pre-charged into the hydraulic lines of the hydraulic suspension system and the hydraulic suspension pressure regulating device, wherein the hydraulic suspension pressure regulating device is connected to the hydraulic lines; By manipulating the adjusting rod to push the piston, the hydraulic fluid in the piston chamber is injected into the hydraulic line, increasing the pressure of the hydraulic line; or the hydraulic fluid in the hydraulic line is drawn into the piston chamber, decreasing the pressure of the hydraulic line.

[0016] The hydraulic suspension adjustment method according to the second aspect of the present invention has at least the following beneficial effects: The hydraulic suspension debugging method in this embodiment, by applying the above-mentioned hydraulic suspension pressure regulating device, directly installs the hydraulic suspension pressure regulating device on the hydraulic pipeline, which allows for adjustment and self-testing of the hydraulic pipeline pressure anytime and anywhere, greatly shortening the debugging cycle.

[0017] According to some embodiments of the present invention, the hydraulic pipeline is connected to a plurality of the hydraulic suspension pressure adjusting devices, and the hydraulic suspension adjustment method includes adjusting the hydraulic suspension pressure adjusting devices one by one until the hydraulic pipeline reaches a set pressure value.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and some of these additional aspects and advantages will become apparent from the description or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a structural cross-sectional view of a hydraulic suspension pressure adjustment device; Figure 2 A schematic diagram of a hydraulic suspension pressure regulating device with the valve core in its first state; Figure 3 A schematic diagram of an overall hydraulic suspension pressure adjustment device; Figure 4 This is a schematic diagram illustrating an application of a hydraulic suspension adjustment device. Figure 5 This is a schematic diagram showing the connection between a hydraulic suspension adjustment device and a hydraulic pipeline.

[0020] In the picture: 100 - cylinder body, 1001 - piston chamber; 200-Piston section, 201-Adjusting rod, 2001-Guide ring, 2002-Sealing ring; 300 - Connecting part, 301 - First channel, 302 - Second channel, 303 - Third channel; 10 - Connecting channel; 11 - First end; 12 - Second end; 3001 - Connecting seat, 3002 - Connecting pipe; 400 - Opening / closing mechanism, 401 - Valve core, 402 - Plug; 500 - Pressure testing agency; 600 - Shock absorber assembly, 601 - Pump unit, 602 - Hydraulic pipeline assembly; 6021 - Hydraulic piping. Detailed Implementation

[0021] Embodiments of the present invention 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 the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limiting this invention.

[0023] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0025] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] An active suspension system is a new type of computer-controlled suspension system that uses sensors to monitor the vehicle's condition in real time and dynamically adjusts parameters such as suspension height, shape, and damping to reduce vehicle vibration and positional changes, thereby improving handling stability and ride comfort. Active suspension systems are divided into three categories: hydraulic control, air suspension, and electromagnetic induction, which achieve adjustment through hydraulic oil, air pressure changes, and electromagnetic fluid characteristics, respectively.

[0027] The active hydraulic suspension system is a closed-loop hydraulic system. Before mass production, the pre-charge pressure of the active hydraulic suspension system needs to be adjusted multiple times to match a system suitable for the vehicle model. In existing technologies, the active hydraulic suspension system requires frequent vacuuming and refilling during the adjustment phase, with refilling performed using external equipment, resulting in a lengthy adjustment period. Furthermore, the vehicle needs to be taken out for adjustment during this phase, and carrying external refilling equipment presents significant inconvenience.

[0028] In response, this invention proposes a hydraulic suspension pressure adjustment device that can overcome the shortcomings of using external injection equipment for suspension pressure adjustment.

[0029] Reference Figures 1 to 5The hydraulic suspension pressure regulating device of this embodiment includes a cylinder 100, a piston section 200, a connecting section 300, and a pressure detection mechanism 500. A piston chamber 1001 is coaxially disposed inside the cylinder 100, and the piston section 200 is slidably mounted within the piston chamber 1001, with its sliding direction being the axial direction of the piston chamber 1001. An adjusting rod 201 is provided in the piston section 200, extending from inside the piston chamber 1001 to the outside of the cylinder 100, thus forming the control end of the piston section 200. The connecting section 300 is fixedly connected to the cylinder 100, and a connecting channel 10 is defined inside the connecting section 300. The first end 11 of the connecting channel 10 communicates with the piston chamber 1001, and the second end 12 of the connecting channel 10 is configured to connect to a hydraulic pipeline 6021, thereby achieving communication between the piston chamber 1001 and the hydraulic pipeline. This hydraulic pipeline 6021 is the hydraulic pipeline 6021 of the active hydraulic suspension system. The pressure detection mechanism 500 is configured to detect the pressure in the connection channel 10. Since the connection channel 10 is connected to the hydraulic line, the pressure in the connection channel 10 is the same as the pressure in the hydraulic line 6021, and the pressure value detected by the pressure detection mechanism 500 is equivalent to the pressure in the hydraulic line 6021.

[0030] The hydraulic suspension pressure regulating device is configured to slide the piston section 200 by adjusting the piston rod 201, thereby injecting hydraulic fluid from the piston chamber 1001 into the connecting channel 10 or drawing hydraulic fluid from the connecting channel 10 into the piston chamber 1001, thereby regulating the pressure of the hydraulic line 6021.

[0031] In this embodiment, by providing a piston chamber 1001 and a piston section 200, the piston section 200 can be used to inject hydraulic fluid from the piston chamber 1001 into the hydraulic line 6021 to increase the pressure, and also to draw hydraulic fluid from the hydraulic line 6021 into the piston chamber 1001 to decrease the pressure, thus enabling rapid adjustment of the pre-charge pressure of the hydraulic line 6021. During the adjustment process, the pressure is detected by the pressure detection mechanism 500 to ensure that the required pressure value is reached.

[0032] In practical applications, it is only necessary to connect the hydraulic suspension pressure regulating device to the hydraulic line 6021 of the hydraulic suspension system for initial hydraulic fluid pre-charging. During the commissioning process, there is no need to evacuate and refill the hydraulic fluid; instead, the pressure is adjusted using the hydraulic suspension pressure regulating device of this embodiment. Compared to traditional solutions, there is no need to evacuate and refill the hydraulic fluid in the hydraulic line 6021, thus significantly shortening the hydraulic fluid pressure regulating time. Hydraulic oil or other hydraulic fluids can be selected as needed.

[0033] Obviously, compared with external filling equipment, the hydraulic suspension pressure regulating device in this embodiment has a compact structure and can be flexibly arranged in terms of installation position and quantity according to pressure regulating needs and installation conditions. It can adjust and self-check the pressure of hydraulic pipeline 6021 anytime and anywhere, which greatly facilitates vehicle debugging and greatly shortens the debugging cycle.

[0034] Combination Figure 1 , Figure 2 It is understandable that the piston chamber 1001 is divided into a rod chamber and a rodless chamber by the piston part 200, with the rod chamber being the area through which the adjusting rod 201 passes. In practical applications, the connecting channel 10 is preferably connected to the rodless chamber. This not only increases the capacity of the piston chamber 1001 to store hydraulic fluid, but also facilitates sealing using the piston part 200, reducing the sealing requirements at the point where the adjusting rod 201 exits the cylinder 100.

[0035] In some embodiments of the present invention, the cylinder 100 and the adjusting rod 201 are threaded together, and the adjusting rod 201 is configured to slide the piston portion 200 by rotation. It is understood that since hydraulic fluid is also added to the piston chamber 1001, the piston portion 200 will be subjected to the pressure of the pre-filled hydraulic fluid. Using the structural configuration of this embodiment, the threaded connection can be used to limit the position of the adjusting rod 201, thereby maintaining the stability of the piston portion 200 and preventing it from moving under the pressure of the hydraulic fluid. At the same time, the threaded connection also facilitates the operation of the adjusting rod 201 to move the piston portion 200.

[0036] In some embodiments, the adjusting rod 201 is fixedly connected to the center of the piston part 200. When the adjusting rod 201 is rotated, it drives the piston part 200 to rotate synchronously. Based on the mating thread between the adjusting rod 201 and the cylinder 100, the adjusting rod 201 and the piston part 200 move axially along the piston cavity 1001, thereby adding hydraulic fluid from the piston cavity 1001 to the hydraulic pipeline 6021 through the connecting channel 10, or drawing hydraulic fluid from the hydraulic pipeline 6021 into the piston cavity 1001, to achieve the purpose of adjusting the hydraulic pressure.

[0037] In some embodiments, a cylinder cover is fixedly installed on the side of the cylinder 100 away from the connecting portion 300. The cylinder cover and the cylinder 100 are coaxially provided with a first threaded hole, and the rod segment of the adjusting rod 201 is provided with an external thread that matches the first threaded hole. The adjusting rod 201 is welded to the center of the piston portion 200 and passes through the first threaded hole. It can be understood that the adjusting rod 201 in this embodiment is also coaxially provided with the cylinder 100. The cylinder cover and the cylinder 100 can be fixed by welding, integral molding, or tight fitting.

[0038] In some embodiments, the cylinder 100 has an opening on the side away from the connecting part 300. The adjusting rod 201 extends from the opening side of the cylinder 100, and an end cap is fixedly mounted on the adjusting rod 201. The outer periphery of the end cap has external threads, and the inner wall of the cylinder 100 has internal threads, with the end cap and the cylinder 100 being threadedly engaged. When the adjusting rod 201 is rotated, the end cap rotates synchronously with the adjusting rod 201, thereby moving and adjusting along the axial direction of the cylinder 100, which in turn drives the adjusting rod 201 and the piston part 200 to move synchronously.

[0039] In some embodiments, the adjusting rod 201 is hinged to the piston portion 200. When the adjusting rod 201 is rotated, it rotates relative to the piston portion 200. Based on the mating thread between the adjusting rod 201 and the cylinder 100, the adjusting rod 201 moves relative to the cylinder 100, thereby pulling the piston portion 200 to move. This allows the hydraulic fluid in the piston chamber 1001 to be added to the hydraulic line 6021 through the connecting channel 10, or the hydraulic fluid in the hydraulic line 6021 to be drawn into the piston chamber 1001, thus achieving the purpose of regulating the hydraulic pressure.

[0040] With the structural configuration of this embodiment, the adjusting rod 201 can be connected to the center position of the piston part 200 or to other positions of the piston part 200, and can pull the piston part 200 to move.

[0041] In some embodiments of the present invention, the hydraulic suspension pressure regulating device is further provided with a drive mechanism, which is connected to the adjusting rod 201 to electrically drive the piston part 200 to move.

[0042] In some embodiments, the adjusting rod 201 is threadedly engaged with the cylinder 100. The driving mechanism is a rotary drive structure used to drive the adjusting rod 201 to rotate, thereby achieving axial movement of the piston section 200.

[0043] In some embodiments, the drive mechanism is a linear motion drive structure, used to drive the adjusting rod 201 to move along the axial direction of the cylinder 100 to drive the piston part 200 to move.

[0044] In some embodiments of the present invention, the hydraulic suspension pressure regulating device further includes an opening and closing mechanism 400, which is configured to regulate the opening or closing of the connection channel 10.

[0045] In this embodiment, the hydraulic suspension pressure adjusting device, since the connecting channel 10 connects to the hydraulic pipeline 6021 of the hydraulic suspension system, the piston part 200 is frequently subjected to force during the test. This embodiment uses an opening and closing mechanism 400 to control the connection and disconnection between the hydraulic pipeline 6021 and the piston chamber 1001. During pressure adjustment, the connecting channel 10 is opened to connect the hydraulic pipeline 6021 to the piston chamber 1001. After pressure adjustment, during the suspension test, the connecting channel 10 is closed to disconnect the hydraulic pipeline 6021 from the piston chamber 1001. This effectively avoids the above situation, improves the reliability of piston part 200 adjustment, and extends the service life of the hydraulic suspension pressure adjusting device.

[0046] Reference Figure 1 and Figure 2 In some embodiments of the present invention, the connecting portion 300 is provided with a mounting cavity having an opening exposed on the surface of the connecting portion 300. The opening and closing mechanism 400 includes a valve core 401 and a plug 402. The valve core 401 is disposed within the mounting cavity and has a first state and a second state. When the valve core 401 is in the first state, the connecting channel 10 is open; when the valve core 401 is in the second state, the connecting channel 10 is closed. The plug 402 is provided to seal the opening of the mounting cavity to ensure the sealing of the mounting cavity. The plug 402 is configured to be removable to expose the valve core 401, allowing the valve core 401 to be operated for state switching.

[0047] In this embodiment, the valve core 401 is used to control the opening and closing between the connecting channel 10 and the piston chamber 1001. When the valve core 401 is in the second state, it must enter the connecting channel 10. In this embodiment, the sealing of the mounting cavity is improved by setting the plug 402, which prevents the hydraulic fluid from seeping out of the mounting cavity.

[0048] In some embodiments of the present invention, the valve core 401 is threadedly connected to the connecting portion 300. The valve core 401 is configured to move relative to the connecting portion 300 by rotation to switch states. It is understood that when the valve core 401 is in the first state, it is subjected to pressure from the hydraulic fluid within the connecting channel 10. In this embodiment, the threaded connection of the valve core 401 effectively overcomes this pressure, preventing the valve core 401 from dislodging under the pressure of the hydraulic fluid. Furthermore, the threaded connection facilitates adjustment of the valve core 401, ensuring its stability and reliability in both the first and second states. Simultaneously, the threaded connection also facilitates sealing of the valve core 401, ensuring the sealing of the connecting channel 10.

[0049] In some embodiments, the connecting channel 10 is arranged perpendicular to the axial direction of the piston chamber 1001. The mounting cavity is coaxially arranged with the piston chamber 1001 and is located on the other side of the connecting channel 10 relative to the piston chamber 1001. The mounting cavity has a second threaded hole communicating with the connecting channel 10. The valve core 401 is installed in the mounting cavity and has a rod segment that matches the second threaded hole. When the valve core 401 is in the second state, it extends into the connecting channel 10 and abuts against the port of the piston chamber 1001 connecting to the connecting channel 10, thereby disconnecting the connection between the connecting channel 10 and the piston chamber 1001. When the valve core 401 is in the first state, it partially or completely withdraws from the connecting channel 10, thereby communicating with the piston chamber 1001. At the same time, a sealing ring is provided between the valve core 401 and the second threaded hole for sealing. The plug 402 is also threadedly connected to the side wall of the mounting cavity, and a sealing ring is provided between the plug 402 and the mounting cavity.

[0050] With the structural configuration of this embodiment, the valve core 401 controls the on / off state by abutting against the connection port of the piston chamber 1001 and the connecting channel 10, which can effectively ensure the isolation between the connecting channel 10 and the piston chamber 1001. The force exerted by the hydraulic fluid in the connecting channel 10 on the valve core 401 is perpendicular to the direction of movement of the valve core 401, so it cannot push the valve core 401 to loosen. The force exerted by the hydraulic fluid in the piston chamber 1001 on the valve core 401 is canceled out by the threads, so it cannot cause the valve core 401 to loosen. Therefore, the reliability of the valve core 401 can be effectively ensured.

[0051] In some embodiments, the connecting channel 10 includes a large-diameter pipe section and a small-diameter pipe section along its length. The diameter of the large-diameter pipe section is larger than that of the small-diameter pipe section, thus forming a stepped surface between them. One of the large-diameter pipe section and the small-diameter pipe section is connected to the piston chamber 1001, and the other is connected to the hydraulic line 6021. The mounting cavity is coaxially arranged with the small-diameter pipe section and located at the end of the large-diameter pipe section away from the small-diameter pipe section. The mounting cavity communicates with the large-diameter pipe section. When the valve core 401 is in the second state, the valve core 401 extends into the large-diameter pipe section and abuts against the stepped surface, blocking the small-diameter pipe section. When the valve core 401 is in the first state, it is separated from the stepped surface.

[0052] In some embodiments of the present invention, the connecting channel 10 includes a first channel 301. The axis of the first channel 301 is angled to the axis of the piston chamber 1001, with the angle being greater than 0° and less than 180°. Both ends of the first channel 301 are connected to the hydraulic pipeline 6021, and the piston chamber 1001 is connected to the middle position of the first channel 301 in the axial direction. With this structural configuration, both ends of the first channel 301 are connected to the hydraulic pipeline 6021. Connecting the first channel 301 to the hydraulic pipeline 6021 facilitates the docking of the hydraulic suspension pressure adjusting device with the hydraulic pipeline 6021. Furthermore, by setting the first channel 301 at an angle to the piston chamber 1001, the cylinder 100 is offset from the connected hydraulic pipeline 6021, which helps to increase the distance between the adjusting rod 201 and the hydraulic pipeline 6021, facilitating adjustment operations.

[0053] It is understood that the above angle is preferably set to 90°, that is, the cylinder 100 is perpendicular to the connected hydraulic pipeline 6021.

[0054] It should be noted that the hydraulic line 6021 is usually in a bent state. The angle mentioned in this embodiment refers to the connection position between the hydraulic line 6021 and the connecting part 300, rather than the angle formed between any position of the hydraulic line 6021 and the axis of the cylinder 100.

[0055] Reference Figure 1 and Figure 2 In some embodiments of the present invention, the connecting channel 10 includes a first channel 301, a second channel 302, and a third channel 303 connected sequentially, and the first channel 301, the second channel 302, and the third channel 303 are perpendicular to each other. The two ends of the first channel 301 are connected to hydraulic lines 6021, thereby incorporating into the hydraulic lines 6021. The second channel 302 is perpendicularly connected to the middle position along the length of the first channel 301. The third channel 303 is perpendicularly connected to the side of the second channel 302 away from the first channel 301. The third channel 303 is coaxially distributed with and communicates with the piston chamber 1001.

[0056] Reference Figures 1 to 3 Both the opening / closing mechanism 400 and the pressure detection mechanism 500 are mounted on the second channel 302. The opening / closing mechanism 400 is positioned on the opposite side of the second channel 302 relative to the cylinder 100 and is coaxially distributed with the third channel 303. The opening / closing mechanism 400 disconnects the hydraulic line 6021 from the piston chamber 1001 by abutting against the port of the third channel 303. The length of the second channel 302 is only sufficient for the installation of the opening / closing mechanism 400 and the pressure detection mechanism 500, in a streamlined design.

[0057] In this embodiment, the connecting channel 10 is connected to the hydraulic pipeline 6021 via a first channel 301. A third channel 303 connects to the piston chamber 1001, and a second channel 302 connects the first channel 301 and the third channel 303, facilitating the installation of the opening / closing mechanism 400 and the pressure detection mechanism 500, and ensuring the reliability of the opening / closing mechanism 400 in controlling the connection between the piston chamber 1001 and the connecting channel 10. Simultaneously, the cylinder 100, through the first channel 301, the second channel 302, and the third channel 303, can remain perpendicular to the connection position of the hydraulic pipeline 6021, facilitating the operation of the adjusting rod 201.

[0058] Reference Figure 1 and Figure 2 In some embodiments of the present invention, two guide rings 2001 are provided on the periphery of the piston portion 200. The guide rings 2001 are attached to the sidewall of the piston cavity 1001, and the two guide rings 2001 are distributed on both sides of the piston portion 200 along the axial direction of the cylinder 100. At the same time, a sealing ring 2002 is also provided between the two guide rings 2001 in the piston portion 200, and the sealing ring 2002 is pressed between the piston portion 200 and the sidewall of the piston cavity 1001.

[0059] By employing the structural configuration of this embodiment, the smoothness of the piston portion 200 sliding within the piston chamber 1001 is improved by providing two guide rings 2001 on the piston portion 200, which helps reduce frictional resistance and prevents the piston portion 200 from jamming during movement. Simultaneously, the sealing ring 2002 ensures a tight seal, preventing hydraulic fluid from seeping from the rodless chamber of the piston chamber 1001 into the rod chamber.

[0060] Reference Figure 3 In some embodiments of the present invention, the connecting part 300 includes a connecting seat 3001 and a connecting pipe 3002, wherein the second channel 302 and the third channel 303 are disposed inside the connecting seat 3001. The connecting pipe 3002 is a rigid pipe, and two connecting pipes 3002 are provided and symmetrically connected to both sides of the connecting seat 3001, maintaining communication with the second channel 302 to form a first channel 301. The end of the connecting pipe 3002 is welded and fixed to the hydraulic pipeline 6021 or fixed by other means. In this embodiment, the hydraulic suspension pressure adjusting device is connected to the hydraulic pipeline 6021 through a rigid pipe structure, forming a closed whole. This not only supports the hydraulic suspension pressure adjusting device and ensures the installation stability of the hydraulic suspension pressure adjusting device, but also eliminates the need for other support and fixation of the hydraulic suspension pressure adjusting device, and facilitates pressure adjustment operations.

[0061] Reference Figure 4 and Figure 5In some embodiments, the hydraulic suspension system used by the hydraulic suspension pressure adjusting device includes a shock absorber assembly 600, a pump assembly 601, and a hydraulic pipeline assembly 602. The hydraulic pipeline assembly 602 connects the shock absorber assembly 600 and the pump assembly 601. The hydraulic suspension pressure adjusting device in this application is connected to the hydraulic pipeline 6021 of the hydraulic pipeline assembly 602. By directly installing the hydraulic suspension pressure adjusting device on the hydraulic pipeline assembly 602, the pressure of the hydraulic pipeline 6021 can be adjusted and self-checked anytime and anywhere, greatly shortening the debugging cycle.

[0062] In this embodiment, pump unit 601 is the pump body structure of the hydraulic suspension that needs to be debugged, such as an electro-hydraulic integrated pump.

[0063] In some embodiments of the present invention, the hydraulic pipeline assembly 602 is provided with a plurality of hydraulic suspension pressure regulating devices to increase the pressure regulation range by means of the plurality of hydraulic suspension pressure regulating devices.

[0064] An embodiment of the present invention also proposes a hydraulic suspension adjustment method, which applies the aforementioned hydraulic suspension pressure adjusting device, including: Connect the hydraulic suspension pressure regulating device to the hydraulic line 6021 of the hydraulic suspension system and pre-charge it with hydraulic fluid; The control lever 201 pushes the piston 200 to inject hydraulic fluid from the piston chamber 1001 into the hydraulic line 6021 to increase the pressure, or to draw hydraulic fluid from the hydraulic line 6021 into the piston chamber 1001 to decrease the pressure.

[0065] Specifically, when increasing the pressure, the piston part 200 is pushed by the adjusting rod 201 to add hydraulic fluid to the hydraulic line 6021. When decreasing the pressure, the piston part 200 is pushed by the adjusting rod 201 to increase the volume of the chamber where the hydraulic fluid is located, so that the hydraulic fluid in the hydraulic line 6021 enters the piston chamber 1001 and the pressure is reduced.

[0066] The hydraulic suspension debugging method of this embodiment, by applying the above-mentioned hydraulic suspension pressure regulating device, directly installs the hydraulic suspension pressure regulating device on the hydraulic pipeline 6021, which allows for adjustment and self-testing of the pressure of the hydraulic pipeline 6021 anytime and anywhere, greatly shortening the debugging cycle.

[0067] In some embodiments of the present invention, the hydraulic suspension adjustment method further includes: connecting multiple hydraulic suspension pressure adjusting devices to the hydraulic pipeline 6021, and adjusting each hydraulic suspension pressure adjusting device to a set pressure. By adjusting each hydraulic suspension pressure adjusting device individually, and monitoring pressure changes in real time through the pressure detection mechanism 500 during the adjustment process, precise pressure adjustment can be performed within a large adjustment range.

[0068] Reference Figures 1 to 5In some embodiments of the present invention, the hydraulic suspension pressure regulating device includes a cylinder 100, a piston 200, a connecting part 300, an opening and closing mechanism 400, and a pressure detection mechanism 500.

[0069] A piston chamber 1001 is coaxially arranged inside the cylinder 100. A piston portion 200 is slidably disposed within the piston chamber 1001 and has an adjusting rod 201 extending from the end of the piston chamber 1001. The adjusting rod 201 is threadedly engaged with the cylinder 100. A connecting portion 300 is fixedly connected to the side of the cylinder 100 away from the adjusting rod 201. Inside the connecting portion 300, a first channel 301, a second channel 302, and a third channel 303 are sequentially connected and perpendicular to each other. The third channel 303 is coaxially distributed with and communicates with the piston chamber 1001. The opposite ends of the first channel 301 are connected to hydraulic lines 6021, forming a closed-loop hydraulic system with the hydraulic suspension system.

[0070] A mounting cavity is provided at a position axially opposite to the third channel 303 in the connecting part 300. An opening is provided on the side of the mounting cavity away from the third channel 303, and an opening / closing mechanism 400 is disposed within the mounting cavity. Specifically, the opening / closing mechanism 400 includes a valve core 401 and a plug 402. The valve core 401 extends from the mounting cavity into the second channel 302 and abuts against the port of the third channel 303, thus sealing the third channel 303. The plug 402 is threaded to the opening side of the mounting cavity for sealing at the opening, and also abuts against the valve core 401. Hexagonal nuts are provided at the ends of the plug 402, valve core 401, and adjusting rod 201.

[0071] The pressure detection mechanism 500 is equipped with a pressure sensor, which is installed on the side of the second channel 302 near the first channel 301.

[0072] The hydraulic suspension adjustment method in this embodiment includes: First, use an Allen wrench to remove the plug 402 and rotate the valve core 401 to connect the second channel 302 and the third channel 303. At the same time, use an Allen wrench to rotate the adjusting rod 201 to control the piston part 200 to be in the middle position of the piston chamber 1001. Then, evacuate the hydraulic pipeline assembly 602. Then add hydraulic fluid to the set pressure; Then rotate the valve core 401 to the port that abuts the third channel 303 to disconnect the hydraulic line 6021 and the piston chamber 1001; During suspension testing, after the current pressure value test is completed or when pressure adjustment is needed based on the tester's judgment, multiple hydraulic suspension pressure adjustment devices are adjusted one by one: When increasing the pressure, first, the aforementioned steps are used to open one opening and closing mechanism 400, so that the piston chamber 1001 is connected to the hydraulic pipeline assembly 602. Then, the adjusting rod 201 pushes the piston part 200 towards the first channel 301, injecting hydraulic fluid from the piston chamber 1001 into the hydraulic pipeline assembly 602. The pressure is monitored in real time by the pressure detection mechanism 500. When the set pressure is reached, the operation of the adjusting rod 201 is stopped, and the opening and closing mechanism 400 is closed. If the set pressure is not reached even after all the hydraulic fluid in the current piston chamber 1001 has been ejected, the current opening and closing mechanism 400 is closed. The closing mechanism 400 adjusts the next hydraulic suspension pressure regulating device until the required pressure value is reached. When reducing the pressure, one opening and closing mechanism 400 is first opened, so that the piston chamber 1001 is connected to the hydraulic pipeline assembly 602. Then, the adjusting rod 201 pushes the piston part 200 to move away from the first channel 301, drawing the hydraulic fluid in the hydraulic pipeline assembly 602 into the piston chamber 1001. The pressure is detected in real time by the pressure detection mechanism 500. When the set pressure is reached, the operation of the adjusting rod 201 is stopped and the opening and closing mechanism 400 is closed. If the current piston chamber 1001 is full of hydraulic fluid but the set pressure has not been reached, the current opening and closing mechanism 400 is closed, and the next hydraulic suspension pressure regulating device is adjusted until the set pressure value is reached.

[0073] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A hydraulic suspension pressure adjusting device, characterized in that, include: A cylindrical body, wherein the cylindrical body is provided with a piston chamber; A piston section is slidably disposed in the piston chamber, and the piston section is provided with an adjusting rod that extends out of the outer side of the cylinder; A connecting part is connected to the cylinder body, and the interior of the connecting part defines a connecting channel. The first end of the connecting channel communicates with the piston chamber, and the second end of the connecting channel is configured to connect to a hydraulic pipeline. A pressure detection mechanism configured to detect the pressure of the connection channel.

2. The hydraulic suspension pressure adjusting device according to claim 1, characterized in that, The cylinder and the adjusting rod are threaded together, and the adjusting rod is configured to slide by rotating the piston part.

3. The hydraulic suspension pressure adjusting device according to claim 1, characterized in that, The hydraulic suspension pressure regulating device also includes an opening and closing mechanism configured to adjust the opening or closing of the connection channel.

4. The hydraulic suspension pressure adjusting device according to claim 3, characterized in that, The connecting portion is provided with a mounting cavity, the mounting cavity having an opening exposed on the surface of the connecting portion, and the opening and closing mechanism includes: A valve core is disposed within the mounting cavity. The valve core has a first state and a second state. When the valve core is in the first state, the connection channel is open. When the valve core is in the second state, the connection channel is closed. A plug is provided at the opening and is configured to be removable to expose the valve core, allowing the valve core to be operated for state switching.

5. The hydraulic suspension pressure adjusting device according to claim 4, characterized in that, The valve core is threaded to the connection portion, and the valve core is configured to move relative to the connection portion by rotation to switch states.

6. The hydraulic suspension pressure adjusting device according to claim 1, characterized in that, The connection channel includes a first channel, the axis of the first channel is set at an angle to the axis of the piston chamber, and the angle is greater than 0° and less than 180°. The two ends of the first channel are connected to the hydraulic pipeline, and the piston chamber is connected to the middle position of the first channel in the axial direction.

7. The hydraulic suspension pressure adjusting device according to claim 1, characterized in that, Multiple guide rings are provided around the piston portion, the guide rings are attached to the side wall of the piston cavity, and the multiple guide rings are arranged at intervals along the axial direction of the cylinder.

8. The hydraulic suspension pressure adjusting device according to claim 1, characterized in that, The hydraulic suspension pressure regulating device is configured to slide the piston section by pulling the adjusting rod, thereby injecting hydraulic fluid from the piston chamber into the connecting channel or drawing hydraulic fluid from the connecting channel into the piston chamber, thereby regulating the pressure of the hydraulic pipeline.

9. A method for adjusting a hydraulic suspension, characterized in that, The hydraulic suspension pressure adjusting device according to claim 1 includes: Hydraulic fluid is pre-charged into the hydraulic lines of the hydraulic suspension system and the hydraulic suspension pressure regulating device, wherein the hydraulic suspension pressure regulating device is connected to the hydraulic lines; By manipulating the adjusting rod to push the piston, the hydraulic fluid in the piston chamber is injected into the hydraulic line, increasing the pressure of the hydraulic line; or the hydraulic fluid in the hydraulic line is drawn into the piston chamber, decreasing the pressure of the hydraulic line.

10. The hydraulic suspension adjustment method according to claim 9, characterized in that, The hydraulic pipeline is connected to multiple hydraulic suspension pressure adjusting devices, and the hydraulic suspension debugging method includes adjusting each hydraulic suspension pressure adjusting device one by one until the hydraulic pipeline reaches the set pressure value.

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