Magnetic filtering device for full-active suspension hydraulic system and full-active suspension hydraulic system

Abstract

The invention provides a magnetic filtering device for a full-active suspension hydraulic system and the full-active suspension hydraulic system. The magnetic filtering device comprises a shell, a magnetic part and an end cover. An oil cavity is formed in the shell, and a first oil port, a second oil port and a mounting port which are communicated with the oil cavity are formed in the shell; the magnetic part is located in the oil cavity. The end cover is detachably connected to the installation opening and used for blocking the installation opening. Wherein a first oil port of the magnetic filtering device is used for being connected with an electro-hydraulic pump of the hydraulic system, and a second oil port of the magnetic filtering device is used for being connected with a shock absorber of the hydraulic system. The magnetic filtering device and the hydraulic system can solve the technical problems that the magnetic filtering device cannot be detached, is difficult to maintain and cannot be cleaned in time, and the reliability of the system is reduced.

Description

Technical Field

[0001] This invention relates to the field of hydraulic system filtration technology, and in particular to a magnetic filtration device for a fully active suspension hydraulic system and the fully active suspension hydraulic system. Background Technology

[0002] Hydraulic systems, especially fully active hydraulic suspension systems, are high-performance suspension systems that achieve damping and active control through the circulation of hydraulic oil. In traditional systems, a small magnet is typically placed inside the shock absorber to attract magnetic impurities such as iron filings from the hydraulic oil. This magnet is fixed inside the shock absorber and cannot be removed. When hydraulic oil flows through the shock absorber, the magnet attracts the iron filings, preventing magnetic impurities from entering precision components. Research has revealed the following problems:

[0003] 1. Non-removable design: After long-term use, the iron filings attracted by the magnet gradually accumulate and cannot be cleaned in time, which leads to a decrease in the magnet's attraction effect or even failure.

[0004] 2. Difficult to maintain: When the magnet fails or too much iron filings accumulate, destructive disassembly or even replacement of the entire shock absorber is required, resulting in high maintenance costs and complex operations;

[0005] 3. Reduced system reliability: Accumulated iron filings may clog oil passages or wear parts, affecting system performance and lifespan. Summary of the Invention

[0006] This invention provides a magnetic filter device and hydraulic system for a fully active suspension hydraulic system to solve the technical problems of non-removable, difficult maintenance, inability to clean in a timely manner, and reduced system reliability.

[0007] The present invention provides a magnetic filtering device for a fully active suspension hydraulic system, comprising: a housing, a magnetic component, and an end cap.

[0008] The housing has an oil chamber, and the housing has a first oil port, a second oil port, and an installation port that are connected to the oil chamber. The magnetic component is located inside the oil chamber. The end cap is detachably connected to the installation port to seal the installation port. The first oil port of the magnetic filter device is used to connect to the electro-hydraulic pump of the hydraulic system, and the second oil port of the magnetic filter device is used to connect to the shock absorber of the hydraulic system.

[0009] In one embodiment of the present invention, the housing includes an end wall and a side wall surrounding the end wall, the end wall and the side wall forming an oil cavity, a first oil port and a second oil port are provided at one end of the side wall near the end wall, and an installation port is provided at one end of the side wall away from the end wall.

[0010] In one embodiment of the present invention, the magnetic component is a magnetic rod, which is located at the end of the side wall away from the end wall and extends along the height direction of the housing. The end of the magnetic rod near the mounting port is detachably connected to the end cap.

[0011] In one embodiment of the present invention, the outer surface of the magnetic rod is provided with an annular groove, wherein:

[0012] The number of annular grooves is two or more, and they are spaced apart along the length of the magnetic rod.

[0013] And / or, the magnetic rod is a neodymium iron boron magnetic rod;

[0014] And / or, the number of magnetic rods in the oil cavity is 1 to 5 and they are spaced apart.

[0015] In one embodiment of the present invention, the end of the magnetic rod near the mounting port is provided with a threaded section, and the end face of the end cap near the end wall is provided with a first threaded hole, and the magnetic rod is threadedly connected to the first threaded hole through the threaded section.

[0016] In one embodiment of the present invention, a second threaded hole is provided on the end face of the side wall away from the end wall, and a through hole is provided on the end cap at a position corresponding to the second threaded hole, and a fixing bolt threadedly connected to the second threaded hole is passed through the through hole.

[0017] And / or, an annular first groove is provided on the end face of the side wall away from the end wall, a sealing ring is provided in the first groove, and the position on the end cap corresponding to the first groove is a plane.

[0018] The present invention also provides a fully active suspension hydraulic system, including an electro-hydraulic pump, a shock absorber, and the aforementioned magnetic filter device.

[0019] In one embodiment of the present invention, the hydraulic system further includes an oil injection pipe assembly located between the electro-hydraulic pump and the magnetic filter device. The electro-hydraulic pump is provided with a pump outlet, and the oil injection pipe assembly includes a three-way connector. The three-way connector includes a first connector, a second connector and a third connector. The first connector is provided with an oil injection valve, the second connector is detachably connected to the pump outlet, and the third connector is detachably connected to the first oil port.

[0020] In one embodiment of the present invention, the hydraulic system further includes a connecting pipe assembly located between the shock absorber and the magnetic filter device. The shock absorber is provided with a shock absorber port. The connecting pipe assembly includes a flexible hose section located in the middle, a first rigid pipe section located at one end of the flexible hose section, and a second rigid pipe section located at the other end of the flexible hose section. A fourth connector is provided at the end of the first rigid pipe section, and a fifth connector is provided at the end of the second rigid pipe section. The fourth connector is detachably connected to the second port, and the fifth connector is detachably connected to the shock absorber port.

[0021] In one embodiment of the present invention, the second connector, the third connector, the fourth connector and the fifth connector are all provided with pressure plates, the pressure plates are provided with through holes, and the end faces of the corresponding connecting parts are provided with third threaded holes, and connecting bolts threaded into the third threaded holes are passed through the through holes.

[0022] And / or, the electro-hydraulic pump is equipped with two pump outlets, the shock absorber is equipped with two shock absorber oil ports, and the number of oil injection pipe assemblies, magnetic filter devices and connecting pipe assemblies are all two sets;

[0023] And / or, the flexible hose section and the rigid hose section can be connected by a welded crimping assembly. The welded crimping assembly includes a crimping core, which includes a large-diameter section and a small-diameter section. Both the large-diameter section and the small-diameter section have through holes. The large-diameter section has a plug hole for accommodating the rigid hose section. The plug hole communicates with the through hole. A sleeve is fixed to the outside of the small-diameter section. The end of the sleeve near the large-diameter section is fixed to the small-diameter section. The end of the sleeve away from the large-diameter section is open. There is a receiving space between the sleeve and the small-diameter section for accommodating the flexible hose section. The inner sidewall of the sleeve has several spaced grooves. The sleeve can be radially deformed under force to squeeze and fix the flexible hose section in the receiving space.

[0024] The beneficial effects of this invention are:

[0025] The present invention discloses a magnetic filter device for a fully active suspension hydraulic system. The device has an oil chamber within its housing, and a first oil port, a second oil port, and a mounting port on the housing, all communicating with the oil chamber. The first oil port is used to connect to the electro-hydraulic pump of the hydraulic system, and the second oil port is used to connect to the shock absorber of the hydraulic system. A magnetic component is located within the oil chamber. An end cap is detachably connected to the mounting port to seal it. Compared to existing technologies, the magnetic filter device of the present invention is a component independent of the electro-hydraulic pump and the shock absorber, and is used to connect between the electro-hydraulic pump and the shock absorber of the hydraulic system. The magnetic component within the oil chamber can be installed / maintained through the mounting port. After long-term use, the end cap can be removed from the mounting port to remove the magnetic component for cleaning and maintenance. Maintenance only requires cleaning the magnetic component, eliminating the need to replace the entire shock absorber or perform destructive disassembly, thus reducing maintenance costs and time. Furthermore, regular cleaning of iron filings prevents impurity accumulation, improving the filtration effect of the magnetic filter device, thereby extending the system's lifespan and enhancing its stability. The magnetic filter device of this invention solves the problem of iron filings accumulation caused by traditional non-removable magnets, greatly improving the reliability and service life of the system. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0027] In the attached diagram:

[0028] Figure 1This is a three-dimensional structural diagram of a magnetic filtering device provided in an embodiment of the present invention;

[0029] Figure 2 Provided for an embodiment of the present invention Figure 1 A schematic diagram of the cross-sectional structure;

[0030] Figure 3 Provided for an embodiment of the present invention Figure 1 A three-dimensional structural diagram omitting the end caps;

[0031] Figure 4 This is a schematic diagram of the overall structure of a hydraulic system provided in an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the principle structure of a hydraulic system provided in an embodiment of the present invention;

[0033] Figure 6 Provided for an embodiment of the present invention Figure 4 Enlarged structural diagram of the magnetic filter device in the middle;

[0034] Figure 7 Provided for an embodiment of the present invention Figure 4 Schematic diagram of the central injection oil pipe assembly;

[0035] Figure 8 Provided for an embodiment of the present invention Figure 4 Schematic diagram of the middle connecting pipe assembly;

[0036] Figure 9 Provided for an embodiment of the present invention Figure 8 Enlarged structural diagram of the fifth joint in the middle;

[0037] Figure 10 Provided for an embodiment of the present invention Figure 4 Schematic diagram of the structure of the electro-hydraulic pump;

[0038] Figure 11 Provided for an embodiment of the present invention Figure 4 Schematic diagram of the structure of the vibration damper;

[0039] Figure 12 Provided for an embodiment of the present invention Figure 9 A schematic diagram of the welded crimping assembly.

[0040] The attached figures are labeled as follows:

[0041] 100. Magnetic filter device; 11. Housing; 111. End wall; 112. Side wall; 1121. Second threaded hole; 12. Oil chamber; 13. First oil port; 14. Second oil port; 15. Mounting port; 16. End cap; 161. First threaded hole; 17. Magnetic rod; 171. Annular groove; 172. Threaded section; 18. Fixing bolt; 19. Sealing ring; 200. Electro-hydraulic pump; 21. Pump outlet; 300. Vibration damper; 31. Vibration damper oil port; 400. Oil injection pipe assembly; 41. 41. First connector; 42. Second connector; 43. Third connector; 44. Oil injection valve; 500. Connecting pipe assembly; 51. Hose section; 52. First rigid pipe section; 53. Second rigid pipe section; 54. Fourth connector; 55. Fifth connector; 600. Pressure plate; 61. Through hole; 62. Third threaded hole; 63. Connecting bolt; 700. Welded crimping assembly; 71. Large diameter section; 711. Insertion hole; 72. Small diameter section; 73. Through hole; 74. Sleeve; 75. Accommodation space; 76. Groove. Detailed Implementation

[0042] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0043] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0044] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0045] Please see Figures 1-4 The present invention provides a magnetic filter device 100 for a fully active suspension hydraulic system, comprising: a housing 11, a magnetic component and an end cap 16.

[0046] Please see Figures 1-3The housing 11 contains an oil cavity 12, and the housing 11 has a first oil port 13, a second oil port 14, and a mounting port 15 communicating with the oil cavity 12. In one embodiment of the present invention, the housing 11 may include an end wall 111 and a side wall 112 surrounding the end wall 111, as long as a stable sealing relationship can be formed. The connection between the end wall 111 and the side wall 112 can be achieved in various ways, such as integral stamping, integral casting, or separate welding. The side wall 112 may be cylindrical and surround the outer edge of the end wall 111. The end wall 111 and the side wall 112 form the oil cavity 12, and the first oil port 13 and the second oil port 14 are provided at the end of the side wall 112 near the end wall 111, and the mounting port 15 is provided at the end of the side wall 112 away from the end wall 111. In one embodiment of the present invention, the first oil port 13 and the second oil port 14 are arranged opposite to each other to facilitate the connection of the magnetic filter device 100 to the hydraulic system. In one embodiment of the present invention, the housing 11 may be made of aluminum alloy.

[0047] Please see Figure 2 The magnetic component is located within the oil cavity 12. The magnetic component can take various shapes readily conceived by those skilled in the art, such as triangular, quadrilateral, or irregular shapes. However, in one embodiment of the present invention, the magnetic component can be a magnetic rod 17. The magnetic rod 17 is located at the end of the side wall 112 away from the end wall 111 and extends along the height direction of the housing 11. The end of the magnetic rod 17 near the mounting port 15 is detachably connected to the end cap 16. Thus, when oil enters the oil cavity 12 through the first oil port 13 / second oil port 14, the magnetic rod 17, positioned along the height direction, can increase the contact area with the oil, improving its adsorption capacity for ferromagnetic impurities in the hydraulic oil. Furthermore, the detachable connection between the magnetic rod 17 and the end cap 16 allows the magnetic rod 17 to be simultaneously removed when the end cap 16 is disassembled, facilitating its removal. When the magnetic filter device 100 is connected to the hydraulic system, the end wall 111 of the housing 11 can face upwards and the end cap 16 downwards (see...). Figure 2 and Figure 6 This means that the oil flowing into the first oil port 13 and the second oil port 14 is positioned above the magnetic rod 17. This further optimizes the adsorption effect for deposited impurities, improves filtration efficiency, and reduces pressure loss, achieving highly efficient adsorption. In one embodiment of the present invention, the magnetic rod 17 can be arranged parallel or perpendicularly at the bottom of the oil path and can be designed as a rotatable structure. The angle can be adjusted by an external handle to optimize the adsorption effect. The specific implementation can adopt conventional designs in the art, which will not be elaborated here.

[0048] Please see Figure 2In one embodiment of the present invention, the outer surface of the magnetic rod 17 may be provided with annular grooves 171. The number of annular grooves 171 may be two or more and they may be spaced apart along the length of the magnetic rod 17, that is, the outer surface of the magnetic rod 17 is corrugated and grooved. The annular grooves 171 can increase the surface area of ​​the magnetic rod 17, further improving its adsorption capacity for ferromagnetic impurities in the hydraulic oil. In one embodiment of the present invention, the magnetic rod 17 may be a neodymium iron boron magnetic rod 17. Neodymium iron boron material has high magnetic strength and can effectively adsorb ferromagnetic impurities in the hydraulic oil. In one embodiment of the present invention, the number of magnetic rods 17 in the oil cavity 12 may be 1 to 5 and spaced apart, for example, 1, 2, 3, 4, or 5. This spaced arrangement of multiple magnetic rods 17 can increase the magnetic field coverage area and further improve the filtration efficiency.

[0049] The detachable connection between the magnetic rod 17 and the end cap 16 can take various structural forms readily conceived by those skilled in the art, such as plug-in connection, snap-fit ​​connection, etc.; however, for ease of implementation, please refer to [link to relevant documentation]. Figures 2-3 In one embodiment of the present invention, the end of the magnetic rod 17 near the mounting port 15 may be provided with a threaded section 172, and the end cover 16 near the end wall 111 is provided with a first threaded hole 161. The magnetic rod 17 is threadedly connected to the first threaded hole 161 through the threaded section 172. This connection method not only enables the magnetic rod 17 to be firmly fixed on the end cover 16, but also facilitates the disassembly and cleaning of the magnetic rod 17.

[0050] Please see Figures 2-3 The end cap 16 is detachably connected to the mounting port 15 to seal the mounting port 15. The detachable connection of the end cap 16 can also adopt various structural forms that are easy for those skilled in the art to conceive of, such as plug-in connection, snap-fit ​​connection, etc. However, for ease of implementation, in one embodiment of the present invention, a second threaded hole 1121 can be provided on the end face of the side wall 112 away from the end wall 111. A through hole is provided on the end cap 16 at a position corresponding to the second threaded hole 1121. A fixing bolt 18 threadedly connected to the threaded hole passes through the through hole. This connection method not only enables the end cap 16 to be firmly fixed at the mounting port 15, but also facilitates the disassembly of the end cap 16.

[0051] Please see Figure 2 In one embodiment of the present invention, an annular first groove may be provided on the end face of the side wall 112 away from the end wall 111. A sealing ring 19 is provided in the first groove. The end cover 16 is a plane at the position corresponding to the first groove. The plane of the end cover 16 presses the sealing ring 19 into the first groove to improve the sealing effect and prevent hydraulic oil from leaking from the connection between the end cover 16 and the housing 11.

[0052] Please see Figures 1-4The first oil port 13 of the magnetic filter device 100 is used to connect to the electro-hydraulic pump 200 of the hydraulic system, and the second oil port 14 of the magnetic filter device 100 is used to connect to the shock absorber 300 of the hydraulic system. That is, the magnetic filter device 100 is a component independent of the electro-hydraulic pump 200 and the shock absorber 300, and is used to connect between the electro-hydraulic pump 200 and the shock absorber 300 of the hydraulic system. The magnetic component in its oil chamber 12 can be installed / maintained through the mounting port 15. After long-term use, the end cover 16 can be removed to take out the magnetic component from the mounting port 15 for cleaning and maintenance. Maintenance only requires cleaning the magnetic component; there is no need to replace the entire shock absorber or perform destructive disassembly, thus reducing maintenance costs and time. Furthermore, regular cleaning of iron filings prevents impurity accumulation, improving the filtering effect of the magnetic filter device 100, thereby extending the system's lifespan and improving its stability. This invention is applicable to fully active suspension hydraulic systems.

[0053] Please see Figures 4-11 The present invention also provides a hydraulic system, including an electro-hydraulic pump 200, a shock absorber 300, and the aforementioned magnetic filter device 100. The structure of the magnetic filter device 100 is the same as described above and will not be repeated here. It should be noted that the magnetic filter device 100 can be installed at any position between the electro-hydraulic pump 200 and the shock absorber 300, as long as the hydraulic oil flowing into the shock absorber 300 passes through the magnetic filter device 100.

[0054] Please see Figure 4 and Figure 7 To facilitate the installation of the magnetic filter device 100, in one embodiment of the present invention, the hydraulic system may further include an oil injection pipe assembly 400 located between the electro-hydraulic pump 200 and the magnetic filter device 100. The electro-hydraulic pump 200 is provided with a pump outlet 21. The oil injection pipe assembly 400 includes a three-way connector, which includes a first connector 41, a second connector 42, and a third connector 43. The first connector 41 is provided with an oil injection valve 44. The second connector 42 is detachably connected to the pump outlet 21, and the third connector 43 is detachably connected to the first oil port 13. Further details can be found in the following sections. Figures 4-8In one embodiment of the present invention, the hydraulic system may further include a connecting pipe assembly 500 located between the shock absorber 300 and the magnetic filter device 100. The shock absorber 300 is provided with a shock absorber port 31. The connecting pipe assembly 500 includes a flexible hose section 51 located in the middle, a first rigid pipe section 52 located at one end of the flexible hose section 51, and a second rigid pipe section 53 located at the other end of the flexible hose section 51. A fourth connector 54 is provided at the end of the first rigid pipe section 52, and a fifth connector 55 is provided at the end of the second rigid pipe section 53. The fourth connector 54 is detachably connected to the second port 14, and the fifth connector 55 is detachably connected to the shock absorber port 31. In this way, the magnetic filter device 100 is connected between the electro-hydraulic pump 200 and the shock absorber 300 by using the oil injection pipe assembly 400 and the connecting pipe assembly 500, which achieves a high degree of system integration, optimizes the system layout, simplifies maintenance operations, reduces maintenance costs, and facilitates installation and maintenance. Furthermore, the design of the flexible hose section 51 can reduce the vibration transmission of the hydraulic system during operation and improve the stability of the system. In one embodiment of the present invention, the rigid pipe section can be made of stainless steel, and the flexible pipe section 51 can be made of a double-layer steel wire braided pipe or a rubber pipe with fiber reinforcement, so as to achieve a burst pressure of more than 1000 bar.

[0055] Please see Figure 9 and Figure 12 The connection between the flexible hose segment 51 and the rigid hose segment can adopt conventional designs in the art, such as welding, clamp connection, etc. In this invention, the flexible hose segment 51 and the rigid hose segment can be connected by a welding crimping assembly 700. The welding crimping assembly 700 includes a crimping inner core, which includes a large-diameter segment 71 and a small-diameter segment 72. Both the large-diameter segment 71 and the small-diameter segment 72 are provided with through holes 73. The large-diameter segment 71 is provided with a insertion hole 711 for accommodating the rigid hose segment. The insertion hole 711 communicates with the through hole 73. A sleeve 74 is fixedly provided on the outside of the small-diameter segment 72. The end of the sleeve 74 near the large-diameter segment 71 is fixed on the small-diameter segment 72, and the end of the sleeve 74 away from the large-diameter segment 71 is... The sleeve 74 has an open design, and a receiving space 75 is provided between the sleeve 74 and the small diameter section 72 to accommodate the hose section 51. The inner side wall of the sleeve 74 has several spaced grooves 76. The sleeve 74 can be radially deformed under force to squeeze and fix the hose section 51 in the receiving space 75. When connecting, the rigid pipe section needs to be inserted into the insertion hole 711 of the welding crimping assembly 700 for brazing first. Then, the hose section 51 is inserted into the receiving space 75 of the sleeve 74 of the welding crimping assembly 700, and a crimping machine is used to apply an inward circumferential force to the sleeve 74. The sleeve 74 can be radially deformed under force, and the grooves 76 engage the hose section 51 to firmly lock the hose section 51 to the rigid pipe section.

[0056] It is conceivable that the oil injection valve 44 can also be integrated into the housing 11 of the magnetic filter device 100 to save space. Furthermore, the oil injection valve 44 can be equipped with a one-way valve for system vacuuming and oil injection operations. When disassembling the magnetic filter device 100, the characteristics of the oil injection valve 44 should be used to first perform depressurization or oil extraction operations. After maintenance is completed, the oil injection valve 44 can be used to perform vacuuming and oil injection pressurization operations.

[0057] Please see Figures 6-11 In one embodiment of the present invention, pressure plates 600 can be provided on the second connector 42, the third connector 43, the fourth connector 54, and the fifth connector 55. The pressure plates 600 have through holes 61, and the end faces of the corresponding connecting parts have third threaded holes 62. Connecting bolts 63, threaded into the third threaded holes 62, pass through the through holes 61. This connection method allows each connector to be firmly connected to its corresponding part, preventing loosening or leakage during the operation of the hydraulic system. In one embodiment of the present invention, a sealing ring 19 can be provided on the end face of the pressure plate 600 to improve the sealing effect. It is conceivable that quick-connect fittings, clamp connections, etc., can also be used to replace the pressure plate 600 connector connection for each connector.

[0058] Please see Figures 10-11 In one embodiment of the present invention, the electro-hydraulic pump 200 may be provided with two pump outlets 21, the shock absorber 300 may be provided with two shock absorber oil ports 31, and the number of oil injection pipe assembly 400, magnetic filter device 100 and connecting pipe assembly 500 are all two sets. The two sets of parallel systems can improve the working reliability and stability of the hydraulic system. In addition, by setting two sets of magnetic filter devices 100, the hydraulic oil flows in different directions during the stretching and compression of the shock absorber in the entire hydraulic system. The magnetic filter device 100 on the high-pressure side and the magnetic filter device 100 on the low-pressure side can ensure the adsorption efficiency to the maximum extent.

[0059] The working process of the hydraulic system of the present invention is as follows:

[0060] During the outward operation, hydraulic oil flows out from the electro-hydraulic pump 200, passes through the oil injection pipe assembly 400, and enters the first oil port 13 of the magnetic filter device 100. When flowing in the oil chamber 12, ferromagnetic impurities in the hydraulic oil are attracted by the magnetic rod 17. The filtered hydraulic oil flows out from the second oil port 14, passes through the connecting pipe assembly 500, and enters the shock absorber 300. When it is necessary to clean the ferromagnetic impurities attracted by the magnetic rod 17, simply remove the end cap 16 and take out the magnetic rod 17 for cleaning. It is simple, convenient, and efficient. During the return operation, the hydraulic oil flows in the opposite direction to the above-mentioned path, which will not be described in detail here.

[0061] In summary, the magnetic filtering device and hydraulic system of this invention, with the magnetic filtering device installed outside the shock absorber and featuring a detachable design, effectively filters ferromagnetic impurities in the hydraulic oil through magnetic rods placed within the oil chamber. This prevents impurities from entering the shock absorber, extending its service life. Furthermore, the detachable connection of the magnetic rods facilitates disassembly and cleaning, improving maintenance convenience. Maintenance only requires cleaning the magnetic rods, eliminating the need to replace the entire shock absorber, thus reducing maintenance costs and time. It can optimize the adsorption effect for deposited impurities, improving filtration efficiency, reducing pressure loss, simplifying system layout, and facilitating installation and maintenance. Moreover, the number and installation method of the magnetic rods can be adjusted according to actual needs, adapting to different vehicle models and operating conditions.

[0062] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A magnetic filter device (100) for a fully active suspension hydraulic system, characterized in that, include: The housing (11) has an oil cavity (12) inside, and the housing (11) has a first oil port (13), a second oil port (14) and an installation port (15) that are connected to the oil cavity (12). A magnetic component, the magnetic component being located within the oil cavity (12); End cap (16), which is detachably connected to the mounting port (15) and is used to block the mounting port (15); The first port (13) of the magnetic filter device (100) is used to connect to the electro-hydraulic pump (200) of the hydraulic system, and the second port (14) of the magnetic filter device (100) is used to connect to the shock absorber (300) of the hydraulic system.

2. The magnetic filter device (100) for a fully active suspension hydraulic system according to claim 1, characterized in that, The housing (11) includes an end wall (111) and a side wall (112) surrounding the end wall (111). The end wall (111) and the side wall (112) form the oil cavity (12). The side wall (112) near the end wall (111) is provided with a first oil port (13) and a second oil port (14). The side wall (112) away from the end wall (111) is provided with the mounting port (15).

3. The magnetic filter device (100) for a fully active suspension hydraulic system according to claim 2, characterized in that, The magnetic component is a magnetic rod (17), which is located at the end of the side wall (112) away from the end wall (111) and extends along the height direction of the housing (11). The end of the magnetic rod (17) near the mounting port (15) is detachably connected to the end cap (16).

4. The magnetic filter device (100) for a fully active suspension hydraulic system according to claim 3, characterized in that, The outer surface of the magnetic rod (17) is provided with an annular groove (171), wherein: The number of the annular grooves (171) is two or more and they are spaced apart along the length direction of the magnetic rod (17); And / or, the magnetic rod (17) is a neodymium iron boron magnetic rod (17); And / or, the number of magnetic rods (17) in the oil cavity (12) is 1 to 5 and they are spaced apart.

5. The magnetic filter device (100) for a fully active suspension hydraulic system according to claim 3, characterized in that, The magnetic rod (17) has a threaded section (172) at one end near the mounting port (15), and the end cap (16) has a first threaded hole (161) on the end face near the end wall (111). The magnetic rod (17) is threadedly connected to the first threaded hole (161) through the threaded section (172).

6. The magnetic filter device (100) for a fully active suspension hydraulic system according to claim 2, characterized in that, The side wall (112) is provided with a second threaded hole (1121) on the end face away from the end wall (111), and the end cap (16) is provided with a through hole at a position corresponding to the second threaded hole (1121), and a fixing bolt (18) threadedly connected to the second threaded hole (1121) is provided in the through hole; And / or, the sidewall (112) is provided with an annular first groove on the end face away from the end wall (111), and a sealing ring (19) is provided in the first groove, and the end cap (16) is a plane at the position corresponding to the first groove.

7. A fully active suspension hydraulic system, characterized in that, It includes an electro-hydraulic pump (200), a vibration damper (300), and a magnetic filter device (100) as described in any one of claims 1-6.

8. The fully active suspension hydraulic system according to claim 7, characterized in that, The hydraulic system also includes an oil injection pipe assembly (400) located between the electro-hydraulic pump (200) and the magnetic filter device (100). The electro-hydraulic pump (200) is provided with a pump outlet (21). The oil injection pipe assembly (400) includes a three-way connector, which includes a first connector (41), a second connector (42), and a third connector (43). The first connector (41) is provided with an oil injection valve (44). The second connector (42) is detachably connected to the pump outlet (21). The third connector (43) is detachably connected to the first oil port (13).

9. The fully active suspension hydraulic system according to claim 8, characterized in that, The hydraulic system also includes a connecting pipe assembly (500) located between the shock absorber (300) and the magnetic filter device (100). The shock absorber (300) is provided with a shock absorber port (31). The connecting pipe assembly (500) includes a hose section (51) located in the middle, a first hard pipe section (52) located at one end of the hose section (51), and a second hard pipe section (53) located at the other end of the hose section (51). The end of the first hard pipe section (52) is provided with a fourth connector (54), and the end of the second hard pipe section (53) is provided with a fifth connector (55). The fourth connector (54) is detachably connected to the second port (14), and the fifth connector (55) is detachably connected to the shock absorber port (31).

10. The fully active suspension hydraulic system according to claim 9, characterized in that, The second connector (42), the third connector (43), the fourth connector (54) and the fifth connector (55) are all provided with pressure plates (600), the pressure plates (600) are provided with through holes (61), and the end faces of the corresponding connection parts are provided with third threaded holes (62). A connecting bolt (63) threaded into the third threaded hole (62) is passed through the through hole (61). And / or, the electro-hydraulic pump (200) is provided with two pump outlets (21), the shock absorber (300) is provided with two shock absorber oil ports (31), and the number of the oil injection pipe assembly (400), the magnetic filter device (100) and the connecting pipe assembly (500) are all two sets; And / or, the flexible hose segment (51) and the rigid hose segment can be connected by a welded crimping assembly (700), the welded crimping assembly (700) including a crimping core, the crimping core including a large-diameter segment (71) and a small-diameter segment (72), both the large-diameter segment (71) and the small-diameter segment (72) having through holes (73), the large-diameter segment (71) having a insertion hole (711) for accommodating the rigid hose segment, the insertion hole (711) communicating with the through hole (73), and a sleeve fixed to the outside of the small-diameter segment (72). 74), the end of the sleeve (74) near the large diameter section (71) is fixed on the small diameter section (72), the end of the sleeve (74) away from the large diameter section (71) is open, there is a receiving space (75) between the sleeve (74) and the small diameter section (72) for accommodating the hose section (51), the inner sidewall of the sleeve (74) is provided with a number of spaced grooves (76), the sleeve (74) can be radially deformed under force to squeeze and fix the hose section (51) in the receiving space (75).

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