Suspension cylinder assembly, damping system and vehicle

Abstract

This invention proposes a suspension cylinder assembly, a vibration damping system, and a vehicle. The suspension cylinder assembly includes: a suspension cylinder comprising a first cylinder barrel and a first piston; the first piston is connected to a first piston rod extending outside the cylinder barrel; the first piston is slidably disposed within the first cylinder barrel, dividing the first cylinder barrel into a first rod-side chamber and a first rodless chamber; an accumulator and an adjusting cylinder, both communicating with either the first rodless chamber or the first rod-side chamber. Through the technical solution of this invention, the adjustment range of the vibration damping performance of the suspension cylinder is increased, the vibration damping performance of the suspension cylinder is improved, and the adjustment of the vibration damping performance of the suspension cylinder is convenient, quick, and adjustable in real time.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more specifically, to a suspension cylinder assembly, a vibration damping system, and a vehicle. Background Technology

[0002] Vehicles are generally equipped with suspension cylinders for vibration damping. Conventional suspension cylinders adjust the vibration damping performance by adjusting the nitrogen charging pressure of the accumulator. The nitrogen charging pressure of the accumulator has a fixed adjustment range, and special nitrogen charging tools are required. Furthermore, adjusting the vibration damping performance by nitrogen charging requires a lot of working time and the adjustment speed is slow. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] In view of this, one object of the present invention is to provide a suspension cylinder assembly.

[0005] Another object of the present invention is to provide a vibration reduction system.

[0006] Another object of the present invention is to provide a vehicle.

[0007] To achieve the above objectives, the first aspect of the present invention provides a suspension cylinder assembly, comprising: a suspension cylinder including a first cylinder barrel and a first piston, the first piston being connected to a first piston rod extending out of the cylinder barrel, the first piston being slidably disposed within the first cylinder barrel and dividing the first cylinder barrel into a first rod chamber and a first rodless chamber; an accumulator and an adjusting cylinder, both of which are in communication with the first rodless chamber or the first rod chamber.

[0008] In this technical solution, by adjusting the setting of the hydraulic cylinder, the capacity of the hydraulic fluid in the suspension cylinder is increased, thereby expanding the adjustment range of the suspension cylinder. That is, in addition to the accumulator, the vibration damping performance of the suspension cylinder can also be adjusted by adjusting the hydraulic cylinder. Moreover, the adjustment cylinder does not require special tools, and the response speed is synchronized with the suspension cylinder. Compared with the accumulator in the prior art, it can improve the adjustment speed of vibration damping performance.

[0009] Specifically, the first piston of the suspension cylinder is slidably disposed inside the first cylinder barrel, and the first piston rod connected to the first piston extends outside the first cylinder barrel. When the suspension cylinder is subjected to an impact, the first piston rod simultaneously receives the impact and moves towards the first rodless chamber with the impact force, driving the first piston to slide towards the first rodless chamber and compress the first rodless chamber, causing the oil in the first rodless chamber to move outward. The accumulator and the regulating cylinder are both connected to the first rodless chamber, so the oil in the first rodless chamber can enter the accumulator and the regulating cylinder respectively. Compared with the existing cylinder assembly with only an accumulator, this increases the oil holding space. The holding space is increased by adjusting the cylinder, which generally has two variable cavities. Therefore, the vibration damping performance of the suspension cylinder can be adjusted by changing the space of the internal cavities, thus expanding the adjustment range of the vibration damping performance of the suspension cylinder. After the impact, the oil that has entered the regulating cylinder and the accumulator can return to the suspension cylinder.

[0010] Furthermore, due to the addition of the adjusting cylinder, the amount of hydraulic fluid in the suspension cylinder can be changed by altering the size of the variable cavity inside the adjusting cylinder, without changing the nitrogen pressure of the accumulator, thus achieving the purpose of adjusting suspension performance. When the nitrogen pressure of the accumulator can be adjusted, the size of the variable cavity inside the adjusting cylinder can be adjusted to a wider range of vibration damping performance, adapting to more off-road conditions. When the nitrogen pressure of the accumulator is limited by conditions, such as a malfunction, and cannot be adjusted, the size of the variable cavity inside the adjusting cylinder can still be adjusted to change the suspension performance. Moreover, the adjusting cylinder has a fast response speed, simple structure, and is convenient, quick, and adjustable in real time.

[0011] Understandably, the accumulator and the regulating cylinder can also be connected to the first rod chamber. In this way, when the suspension cylinder is impacted, causing the first piston rod to drive the first piston to slide towards the first rodless chamber, the oil in the accumulator and the regulating cylinder can enter the first rod chamber, thereby further pushing the piston to compress the first rodless chamber and playing a vibration damping role. After the impact, the oil in the first rod chamber can return to the accumulator and the regulating cylinder.

[0012] It should also be noted that this technical solution achieves the purpose of adjusting the vibration reduction performance of the suspension cylinder by adding an adjusting cylinder. This structure and method only requires slight processing and assembly on the basis of the existing structure. That is, it is only necessary to connect the adjusting cylinder to the suspension cylinder without changing the size and dimensions of the existing suspension cylinder. This makes it easy to directly modify vehicles that are in use, and standardized suspension cylinders can continue to be used. There is no need to change the original production and procurement plan of the new vehicle. Only the procurement and assembly plan of the adjusting cylinder needs to be added, which is conducive to improving the convenience and efficiency of production and assembly.

[0013] In the above technical solution, the regulating cylinder includes: a second cylinder and a second piston, the second piston being slidably disposed inside the second cylinder, a second piston rod extending out of the second cylinder being connected to the second piston, the second piston dividing the second cylinder into a second rod chamber and a second rodless chamber; one of the second rod chamber and the second rodless chamber is in communication with the first rodless chamber or the first rod chamber.

[0014] In the above technical solution, the second piston rod is driven manually, electrically, or hydraulically.

[0015] In the above technical solution, the regulating cylinder is connected to the first rodless cavity; the first cylinder barrel is provided with a first axial channel at one end of the first rodless cavity, and the accumulator and the regulating cylinder are connected to the first rodless cavity through the first axial channel.

[0016] In the above technical solution, the second rodless chamber and the first rodless chamber of the regulating cylinder are connected.

[0017] In the above technical solution, the accumulator and the regulating cylinder are located on the same side of the suspension cylinder; the first cylinder is also provided with a radial channel, the regulating cylinder is provided with a second axial channel, and the accumulator is provided with a third axial channel. One end of the radial channel is connected to both the second and third axial channels, and the other end of the radial channel is connected to the first axial channel.

[0018] In any of the above technical solutions, the accumulator and the regulating cylinder are arranged coaxially.

[0019] In the above technical solution, the accumulator includes an oil chamber and a gas chamber that are independently arranged and adjacent to each other, and the oil chamber is connected to the first rodless chamber or the first rod chamber.

[0020] The second aspect of the present invention provides a vibration reduction system, including a vibration reduction body; the suspension cylinder assembly of any of the first aspects is disposed on the vibration reduction body.

[0021] In this technical solution, by adopting the suspension cylinder assembly of any of the above technical solutions, all the beneficial effects of the above technical solutions are achieved, which will not be elaborated here.

[0022] The third aspect of the present invention provides a vehicle, including a vehicle body; a suspension cylinder assembly of any of the first aspects described above is disposed on the vehicle body, or a vibration damping system of any of the second aspects described above is disposed on the vehicle body.

[0023] In this technical solution, by adopting the suspension cylinder assembly of any of the technical solutions in the first aspect, all the beneficial effects of the technical solutions in the first aspect are achieved; or by adopting the vibration reduction system of any of the technical solutions in the second aspect, all the beneficial effects of the technical solutions in the second aspect are achieved. Further details will not be elaborated here.

[0024] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention. Attached Figure Description

[0025] Figure 1 This is a cross-sectional structural schematic diagram of a suspension cylinder assembly according to an embodiment of the present invention;

[0026] Figure 2 This is a cross-sectional structural schematic diagram of an adjusting cylinder according to an embodiment of the present invention.

[0027] in, Figure 1 and Figure 2 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0028] 10 Suspension cylinder, 100 First cylinder barrel, 102 First piston, 104 First piston rod, 106 First rod chamber, 108 First rodless chamber, 110 First axial channel, 112 Radial channel, 12 Adjusting cylinder, 120 Second cylinder barrel, 122 Second piston, 124 Second piston rod, 126 Second rod chamber, 128 Second rodless chamber, 129 Second axial channel, 14 Accumulator, 140 Third axial channel, 142 Oil chamber, 144 Air chamber, 16 Connecting piece. Detailed Implementation

[0029] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0031] The following reference Figure 1 and Figure 2 Some embodiments of the present invention are described.

[0032] like Figure 1 and Figure 2 As shown, a suspension cylinder assembly according to an embodiment of the present invention includes: a suspension cylinder 10, an accumulator 14, and an adjusting cylinder 12, wherein the suspension cylinder 10 is connected to the accumulator 14 and the adjusting cylinder 12 respectively.

[0033] Specifically, the suspension cylinder 10 includes a first cylinder 100 and a first piston 102. The first piston 102 is connected to a first piston rod 104 extending out of the cylinder. The first piston 102 is slidably disposed inside the first cylinder 100 and divides the first cylinder 100 into a first rod chamber 106 and a first rodless chamber 108.

[0034] In some embodiments, the accumulator 14 and the regulating cylinder 12 are both connected to the first rodless chamber 108; wherein, the first piston rod 104 drives the first piston 102 to slide toward the first rodless chamber 108 and drives the oil in the first rodless chamber 108 into the accumulator 14 and the regulating cylinder 12.

[0035] In this embodiment, by adjusting the setting of the hydraulic cylinder 12, the capacity of the oil in the suspension cylinder 10 is increased, thereby increasing the flow range of the oil in the suspension cylinder 10 and increasing the range of motion of the first piston 102. As a result, the range of adjustment of the vibration damping performance of the suspension cylinder 10 can be expanded. That is, in addition to the accumulator 14, the vibration damping performance of the suspension cylinder 10 can also be adjusted by adjusting the hydraulic cylinder 12. Moreover, the adjustment of the hydraulic cylinder 12 does not require special tools, and the reaction speed is synchronized with that of the suspension cylinder 10. Compared with the accumulator 14 in the prior art, the structure is simpler, the operation is more convenient, and the adjustment speed of the vibration damping performance can also be improved.

[0036] Specifically, the first piston 102 of the suspension cylinder 10 is slidably disposed inside the first cylinder barrel 100, and the first piston rod 104 connected to the first piston 102 extends outside the first cylinder barrel 100. This allows the first piston rod 104 to simultaneously receive the impact when the suspension cylinder 10 is subjected to an impact, and move towards the first rodless chamber 108 with the impact force, driving the first piston 102 to slide towards the first rodless chamber 108 and compress the first rodless chamber 108, causing the oil in the first rodless chamber 108 to move outwards. The accumulator 14 and the regulating cylinder 12 are both connected to the first rodless chamber 108, therefore the first rodless... The oil in the rod cavity 108 can enter the accumulator 14 and the regulating cylinder 12 respectively. Compared with the existing cylinder assembly with only the accumulator 14, this increases the oil holding space. The holding space is increased by regulating the cylinder 12. The regulating cylinder 12 generally has two variable cavities. Therefore, the vibration damping performance of the suspension cylinder 10 can be adjusted by changing the cavity space inside the regulating cylinder 12, thus expanding the adjustment range of the vibration damping performance of the suspension cylinder 10. After the impact, the oil that entered the regulating cylinder 12 and the accumulator 14 can return to the suspension cylinder 10.

[0037] Furthermore, with the addition of the adjusting cylinder 12, the amount of oil in the suspension cylinder 10 can be changed simply by altering the size of the variable cavity inside the adjusting cylinder 12, without changing the nitrogen pressure of the accumulator 14, thus achieving the purpose of adjusting suspension performance. When the nitrogen pressure of the accumulator 14 can be adjusted, the size of the variable cavity inside the adjusting cylinder 12 can be adjusted to a wider range of vibration damping performance, adapting to more off-road conditions. When the nitrogen pressure of the accumulator 14 is limited by conditions, such as a malfunction, and cannot be adjusted, the size of the variable cavity inside the adjusting cylinder 12 can still be adjusted to change suspension performance. Moreover, the adjusting cylinder 12 does not require inflation, has a fast response speed, a simple structure, and is convenient, quick, and adjustable in real time.

[0038] In other embodiments, the accumulator 14 and the regulating cylinder 12 may both be connected to the first rod chamber 106. In this way, when the suspension cylinder 10 is impacted, causing the first piston rod 104 to drive the first piston 102 to slide towards the first rodless chamber 108, the oil in the accumulator 14 and the regulating cylinder 12 can enter the first rod chamber 106, thereby further pushing the first piston 102 to compress the first rodless chamber 108, which plays a role in vibration reduction. After the impact, the oil in the first rod chamber 106 can return to the accumulator 14 and the regulating cylinder 12.

[0039] like Figure 2 As shown, in the above embodiment, the adjusting cylinder 12 includes: a second cylinder 120 and a second piston 122. The second piston 122 is slidably disposed inside the second cylinder 120. A second piston rod 124 extending out of the second cylinder 120 is connected to the second piston 122. The second piston 122 divides the second cylinder 120 into a second rod chamber 126 and a second rodless chamber 128. One of the second rod chamber 126 and the second rodless chamber 128 communicates with the first rodless chamber 108 or the first rod chamber 106.

[0040] In this embodiment, by setting the second cylinder 120 and the second piston 122, and with the second piston 122 slidably disposed within the second cylinder 120, the size of the space of the second rod chamber 126 and the second rodless chamber 128 can change as the second piston 122 slides or changes position, thereby changing the space for accommodating the oil, thus achieving the purpose of adjusting the vibration damping performance of the suspension cylinder 10, making the suspension cylinder 10 more adaptable.

[0041] Furthermore, by connecting a second piston rod 124 extending out of the second cylinder 120 to the second piston 122, the second piston rod 124 can be manually, electrically, or hydraulically driven, thereby driving the second piston 122 to slide within the second cylinder 120 via the second piston rod 124, eliminating the need to insert the drive device into the second cylinder 120, thus improving the convenience of operating or driving the second piston rod 124; and by communicating one of the second rod chamber 126 and the second rodless chamber 128 with the first rodless chamber 108 or the first rod chamber 106, the flow of oil between the adjusting cylinder 12 and the suspension cylinder 10 is facilitated.

[0042] In some embodiments, the second piston rod 124 is manually driven, which is simple in structure, easy to operate, and can reduce the number of parts and save space.

[0043] In some other embodiments, the second piston rod 124 is electrically driven, which facilitates precise control of the stroke of the second piston 122 and facilitates connection with a computer to achieve automated and intelligent control of the stroke of the second piston 122. In still other embodiments, the second piston rod 124 is hydraulically driven, which is simple and convenient, reduces the workload of users, and the control method is relatively simple.

[0044] In the above embodiment, the regulating cylinder 12 is connected to the first rodless cavity 108; the first cylinder 100 is provided with a first axial channel 110 at one end of the first rodless cavity 108, and the accumulator 14 and the regulating cylinder 12 are connected to the first rodless cavity 108 through the first axial channel 110.

[0045] In this embodiment, the accumulator 14 and the regulating cylinder 12 are connected to the first rodless chamber 108 through the first axial channel 110. That is, the oil in the first rodless chamber 108 enters and exits through the first axial channel 110, and the movement direction of the oil is the same as the movement direction of the first piston 102. This can reduce the resistance when the oil flows, improve the smoothness of the sliding of the first piston 102, and thus improve the vibration damping performance of the suspension cylinder 10. Furthermore, the first axial channel 110 is located at the end of the first rodless chamber 108 rather than the side wall. In this way, during the sliding process of the first piston 102, the first axial channel 110 always remains connected to the first rodless chamber 108, avoiding the situation where the first piston 102 slides past the first axial channel 110 and causes the first axial channel 110 to connect to the first rod chamber 106. In addition, the regulating cylinder 12 is connected to the first rodless chamber 108 of the suspension cylinder 10, which makes it easier to set the relative position between the cylinder and the suspension cylinder 10 and helps to avoid interference between the regulating cylinder 12 and the first piston rod 104.

[0046] In the above embodiment, the second rodless chamber 128 and the first rodless chamber 108 of the regulating cylinder 12 are connected.

[0047] In this embodiment, the second rodless cavity 128 and the first rodless cavity 108 are connected, which facilitates setting the relative position between the hydraulic cylinder and the suspension cylinder 10, helps to avoid interference between the first piston rod 104 and the second piston rod 124, and also facilitates setting the connecting channel between the first rodless cavity 108 and the second rodless cavity 128 at the ends of the two hydraulic cylinders, avoiding the situation where the connecting channel is set on the side wall; it also facilitates setting both the first piston rod 104 and the second piston rod 124 facing the outside of the suspension cylinder assembly, thereby facilitating the operation of the first piston rod 104 and the second piston rod 124 or their connection with other components.

[0048] Of course, the solutions in this application are not limited to this. In some other embodiments, the second rod chamber 126 of the adjusting cylinder 12 is connected to the first rodless chamber 108, or the second rod chamber 126 is connected to the first rod chamber 106. All of the above solutions can achieve the purpose of improving the adjustment range of the vibration reduction performance of the suspension cylinder 10.

[0049] In the above embodiment, the accumulator 14 and the regulating cylinder 12 are located on the same side of the suspension cylinder 10; the first cylinder 100 is also provided with a radial channel 112, the regulating cylinder 12 is provided with a second axial channel 129, the accumulator 14 is provided with a third axial channel 140, one end of the radial channel 112 is connected to both the second axial channel 129 and the third axial channel 140, and the other end of the radial channel 112 is connected to the first axial channel 110.

[0050] In this embodiment, the accumulator 14 and the regulating cylinder 12 are located on the same side of the suspension cylinder 10. This structure is compact, and the shape of the entire cylinder assembly is regular, which helps to save space and shorten the distance between the accumulator 14, the regulating cylinder 12 and the suspension cylinder 10, thereby reducing the oil stroke and improving the vibration reduction response speed. One end of the radial channel 112 is connected to both the second axial channel 129 and the third axial channel 140, and the other end of the radial channel 112 is connected to the first axial channel 110, so that the suspension cylinder 10, the accumulator 14 and the regulating cylinder 12 are simultaneously connected. The structure is simple and compact, and the oil in the suspension cylinder 10 can simultaneously enter and exit the accumulator 14 and the regulating cylinder 12, which helps to increase the flow space of the oil and thus expand the adjustment range of the vibration reduction performance of the suspension cylinder 10.

[0051] In any of the above embodiments, the accumulator 14 and the regulating cylinder 12 are arranged coaxially.

[0052] In this embodiment, the accumulator 14 and the regulating cylinder 12 are coaxially arranged, with regular shapes and compact structures, which saves space. Furthermore, the second axial channel 129 and the third axial channel 140 are coaxially arranged, which helps to further improve the smoothness of the hydraulic fluid movement, thereby improving the vibration reduction performance and response speed of the suspension cylinder assembly.

[0053] In the above embodiment, the accumulator 14 includes an oil chamber 142 and an air chamber 144 that are independently arranged and adjacent to each other. The oil chamber 142 is connected to the first rodless chamber 108 or the first rod chamber 106.

[0054] In this embodiment, the oil chamber 142 is connected to the first rodless chamber 108 or the first rod chamber 106, which facilitates the flow of oil between the accumulator 14 and the suspension cylinder 10, so as to realize the compression or expansion of the cavity of the first rodless chamber 108 or the first rod chamber 106, thereby achieving vibration reduction of the suspension cylinder 10; the oil chamber 142 and the air chamber 144 are independent of each other and arranged adjacent to each other, which facilitates the compression of the oil chamber 142 under gas pressure, and the compression of the air chamber 144 when oil enters the oil chamber 142 to overcome the gas pressure, thereby achieving the purpose of vibration reduction.

[0055] like Figure 1 As shown, it can be understood that in some embodiments, the accumulator 14 and the regulating cylinder 12 are separately arranged, and a connecting member 16 is provided between the accumulator 14 and the regulating cylinder 12. The connecting member 16 is also arranged in the circumference of the first cylinder 100. The radial channel 112 extends into the connecting member 16, and the second axial channel 129 and the third axial channel 140 also extend into the connecting member 16. The radial channel 112, the second axial channel 129, and the third axial channel 140 are connected in the connecting member 16. This structure facilitates the production of the accumulator 14 and the regulating cylinder 12, and existing standard parts can be used. The production process is simple and convenient, and assembly is easy.

[0056] In other embodiments, the accumulator 14 and the regulating cylinder 12 are integrated, that is, there is no connecting member 16 between the accumulator 14 and the regulating cylinder 12, and the oil chamber 142 of the accumulator 14 and the second rodless chamber 128 of the regulating cylinder 12 are the same chamber; in order to prevent the second piston 122 from sliding over the radial channel 112, a limiting part for the second piston 122 needs to be provided at the position of the second rodless chamber 128 corresponding to the radial channel 112, so as to prevent the second piston 122 from sliding over and causing the radial channel 112 to connect with the second rod chamber 126; similarly, a limiting part for the piston of the accumulator 14 also needs to be provided at the position of the oil chamber 142 corresponding to the radial channel 112, so as to prevent the piston of the accumulator 14 from sliding over and causing the radial channel 112 to connect with the air chamber 144; this embodiment can also be understood as directly adding a second piston 122 in the oil chamber 142 of the accumulator 14, and a second piston rod 124 extending out of the accumulator 14 is connected to the second piston 122. This structure is more compact, has higher assembly efficiency, reduces the number of parts that need to be sealed, and lowers the probability of oil leakage.

[0057] A second aspect of the present invention provides a vibration damping system, including a vibration damping body; a suspension cylinder assembly of any of the embodiments of the first aspect is disposed on the vibration damping body.

[0058] In this embodiment, by employing the suspension cylinder assembly of any of the above embodiments, all the beneficial effects of the above embodiments are achieved, which will not be repeated here.

[0059] An embodiment of the third aspect of the present invention provides a vehicle, including a vehicle body; a suspension cylinder assembly of any embodiment of the first aspect described above, disposed on the vehicle body; or a vibration damping system of any technical solution of the second aspect described above, disposed on the vehicle body.

[0060] In this embodiment, by adopting the suspension cylinder assembly of any of the technical solutions in the first aspect, all the beneficial effects of the embodiments in the first aspect are achieved; or by adopting the vibration reduction system of any of the embodiments in the second aspect, all the beneficial effects of the technical solutions in the second aspect are achieved. Further details will not be repeated here.

[0061] In some embodiments, the first cylinder 100 of the suspension cylinder 10 of the suspension cylinder assembly is fixedly connected to the vehicle body, or the first piston rod 104 is fixedly connected to the vehicle body; optionally, the vehicle includes any one of engineering vehicles, buses, and trucks.

[0062] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention.

[0063] According to a specific embodiment of the present application, a suspension cylinder assembly includes a suspension cylinder 10, an adjusting cylinder 12, and an accumulator 14. The adjusting cylinder 12 is connected to the first rodless chamber 108 of the suspension cylinder 10 and the accumulator 14. When the nitrogen pressure of the accumulator 14 does not change, the amount of oil in the first rodless chamber 108 is changed by changing the stroke of the adjusting cylinder 12, thereby adjusting the vibration damping performance of the suspension cylinder 10. This is convenient, quick, and adjustable in real time.

[0064] Specifically, such as Figure 1 As shown, the suspension cylinder assembly mainly consists of a suspension cylinder 10, an accumulator 14, and an adjusting cylinder 12, wherein the adjusting cylinder 12 has a second piston rod 124.

[0065] Working principle:

[0066] 1) The first rodless chamber 108 of the suspension cylinder 10 is connected to the accumulator 14. At the same time, an adjustment cylinder 12 is integrated. The second rodless chamber 128 of the adjustment cylinder 12 is connected to the first rodless chamber 108 of the suspension cylinder 10. Without changing the nitrogen charging pressure of the accumulator 14, the position of the second piston rod 124 of the adjustment cylinder 12 is changed to change the amount of oil in the first rodless chamber 108 of the suspension cylinder 10, thereby adjusting the vibration damping performance of the suspension cylinder 10.

[0067] 2) When the nitrogen pressure of the accumulator 14 can be adjusted, the adjustment range of the suspension cylinder 10 can be widened by adjusting the stroke of the second piston rod 124, so as to adapt to more off-road conditions; when the nitrogen pressure of the accumulator 14 cannot be adjusted due to conditions, the vibration damping performance of the suspension cylinder 10 can be changed by adjusting the stroke of the second piston rod 124.

[0068] 3) Adjusting the regulating cylinder 12 is convenient, quick, and adjustable in real time.

[0069] The specific embodiments described above in this application have the following beneficial effects:

[0070] 1) Adjusting the pressure of the hydraulic cylinder 12 in conjunction with the accumulator 14 allows for a wider range of adjustment for the suspension's damping performance and better adaptability;

[0071] 2) When the pressure of the accumulator 14 cannot be adjusted, the vibration damping performance can be adjusted by changing the stroke of the second piston rod 124 of the regulating cylinder 12, which is convenient and quick.

[0072] The technical solution of the present invention has been described in detail above with reference to the accompanying drawings. Through the technical solution of the present invention, the adjustment range of the vibration reduction performance of the suspension cylinder is increased, the vibration reduction performance of the suspension cylinder is improved, and the adjustment of the vibration reduction performance of the suspension cylinder is convenient, quick, and adjustable in real time.

[0073] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0074] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship 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 unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0075] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present 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.

[0076] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A suspension ram assembly, characterized by, The suspension oil cylinder (10) comprises a first cylinder barrel (100) and a first piston (102), the first piston (102) is connected with a first piston rod (104) extending out of the cylinder barrel, the first piston (102) is slidably arranged in the first cylinder barrel (100) and separates the first cylinder barrel (100) into a first rod cavity (106) and a first rodless cavity (108); an accumulator (14) and an adjusting oil cylinder (12); The adjusting oil cylinder (12) comprises: a second cylinder barrel (120) and a second piston (122), the second piston (122) is slidably arranged in the second cylinder barrel (120), the second piston (122) is connected with a second piston rod (124) extending out of the second cylinder barrel (120), and the second piston (122) separates the second cylinder barrel (120) into a second rod cavity (126) and a second rodless cavity (128); one of the second rod cavity (126) and the second rodless cavity (128) is in communication with the first rodless cavity (108); the adjusting oil cylinder (12) is in communication with the first rodless cavity (108); the first cylinder barrel (100) is provided with a first axial passage (110) at one end of the first rodless cavity (108), and the accumulator (14) and the adjusting oil cylinder (12) are in communication with the first rodless cavity (108) through the first axial passage (110); the accumulator (14) and the adjusting oil cylinder (12) are arranged on the same side of the suspension oil cylinder (10); the first cylinder barrel (100) is further provided with a radial passage (112), the adjusting oil cylinder (12) is provided with a second axial passage (129), the accumulator (14) is provided with a third axial passage (140), one end of the radial passage (112) is in communication with the second axial passage (129) and the third axial passage (140) at the same time, and the other end of the radial passage (112) is in communication with the first axial passage (110).

2. The suspension oil cylinder assembly according to claim 1, wherein the second piston rod (124) is driven manually or electrically or hydraulically.

3. The suspension oil cylinder assembly according to claim 2, wherein the second rodless cavity (128) of the adjusting oil cylinder (12) is in communication with the first rodless cavity (108).

4. The suspension oil cylinder assembly according to any one of claims 1-3, wherein the accumulator (14) and the adjusting oil cylinder (12) are coaxially arranged.

5. The suspension oil cylinder assembly according to claim 4, wherein the accumulator (14) comprises an oil cavity (142) and an air cavity (144) arranged independently and adjacently, and the oil cavity (142) is in communication with the first rodless cavity (108) or the first rod cavity (106). The suspension oil cylinder assembly according to any one of claims 1-5.

6. A vibration damping system, characterized by The vehicle body; ​ 7. A vehicle characterized by comprising: ​ ​ The suspension cylinder assembly of any one of claims 1-5 is provided on the vehicle body; or the damping system of claim 6 is provided on the vehicle body.

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