Hollow rod hydraulic active suspension shock absorber

Abstract

The application discloses a hollow rod oil pressure active suspension shock absorber and relates to the technical field of shock absorbers. The shock absorber comprises a shock absorber mechanism and a lubricating mechanism. The shock absorber mechanism comprises an outer cylinder, a lug located at one end of the outer cylinder, an oil seal located at the other end of the outer cylinder, an inner cylinder located in the outer cylinder, a piston head located in the inner cylinder and a piston rod located outside the piston head. The lubricating mechanism comprises an oil storage part arranged at one end of the shock absorber mechanism. Both sides of the inside of the oil storage part are respectively provided with an oil discharging part and an oil collecting part. An oil guide groove is further arranged on the inner wall of the oil storage part. The oil discharging part and the oil collecting part are in contact with the piston rod. With the movement of the piston rod, the oil discharging roller and the oil collecting roller can be driven to rotate by friction. The lubricating oil in the oil storage part is led out by the oil discharging roller to lubricate the piston rod, so that the friction between the piston rod and the oil seal is reduced, the aging and abrasion of the oil seal in the friction process with the piston rod are reduced, and the normal use of the shock absorber is ensured.

Description

Technical Field

[0001] The invention relates to shock absorber technology, in particular to a hollow rod oil pressure active suspension shock absorber. Background Art

[0002] A shock absorber is a damping element that uses oil damping to suppress the vibration caused by the spring rebounding after absorbing shock and the impact from the road. Its main structure includes a working cylinder, an oil storage cylinder, a piston rod and various valves. Its main function is to reduce the vibration and impact caused by uneven road conditions during vehicle driving, thereby improving the vehicle's driving smoothness and ride comfort, and improving driving safety and operational stability.

[0003] Patent document CN113983104B, published on July 28, 2023, discloses an automobile shock absorber, comprising an oil storage cylinder, a dust cover movably sleeved on the outer side of the oil storage cylinder, a working oil cylinder fixedly sleeved on the inner side of the oil storage cylinder, a piston rod fixedly connected to one side of the inner side of the dust cover, and the piston rod movably sleeved with the oil storage cylinder and the working oil cylinder, a large piston head fixedly connected to the end of the piston rod located inside the working oil cylinder, the outer ring of the large piston head movably sleeved with the inner wall of the working oil cylinder, the large piston head consisting of a circular plate and a rubber ring, the circular plate fixedly sleeved with the rubber ring. The present invention reduces the size of the gap between the large piston head and the working oil cylinder by providing an annular support for the rubber ring through the movable block and providing a first protective ring and a second protective ring in an annular manner on the outer side of the rubber ring, thereby preventing oil from penetrating through the gap, maintaining a constant pressure on both sides of the large piston head, improving the stability of the damping ratio, and enhancing the shock absorption performance of the shock absorber.

[0004] In the prior art, during the long-term movement of the piston rod, the shock absorber oil seal is easily worn and aged due to the long-term friction, thereby affecting the normal movement of the piston rod, and the oil inside the shock absorber is prone to leakage, which may also cause abnormal noise during the use of the shock absorber. For this reason, a hollow rod oil pressure active suspension shock absorber is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a hollow rod oil pressure active suspension shock absorber to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: comprising:

[0007] A shock absorber mechanism comprising an outer tube, a lifting lug at one end of the outer tube, an oil seal at the other end of the outer tube, an inner tube within the outer tube, a piston head within the inner tube, and a piston rod outside the piston head; and

[0008] The lubrication mechanism includes an oil storage member arranged at one end of the shock absorber mechanism, an oil discharge member and an oil collection member are respectively installed on both sides of the interior of the oil storage member, and an oil guide groove is also left on the inner wall of the oil storage member.

[0009] As a further description of the above technical solution: the oil guide groove is arranged obliquely on the inner wall of the oil storage component.

[0010] As a further description of the above technical solution: the oil storage part includes a fixed plate, an oil storage cavity is opened inside the fixed plate, a refueling port is left on one side of the oil storage cavity, the refueling port extends to the surface of the fixed plate, a sealing plug is installed inside the refueling port, and placement cavities are symmetrically opened inside the fixed plate, and sliding grooves are opened on the inner walls of the two placement cavities.

[0011] As a further description of the above technical solution: the oil drain member includes an oil drain roller, both ends of the roller shaft of the oil drain roller extend into the slide groove, a first positioning spring is installed between the roller shaft of the oil drain roller and the slide groove, and an oil drain port is formed on the end surface of the oil drain roller;

[0012] The oil collecting member includes an oil collecting roller, both ends of the roller shaft of the oil collecting roller also extend into the slide groove, a second positioning spring is installed between the roller shaft of the oil collecting roller and the slide groove, and an oil collecting port is provided on the end surface of the oil collecting roller.

[0013] As a further description of the above technical solution: the oil discharge roller and the oil collection roller are both arranged on the path of the oil storage cavity;

[0014] The two ends of the oil guide groove are respectively located on the rotation paths of the oil discharge port and the oil collection port.

[0015] A drainage groove is further provided inside the fixed plate, the drainage groove being located on one side of the oil collecting member and being communicated with the oil storage cavity;

[0016] The top end of the attraction groove is located on the rotation path of the oil collecting roller.

[0017] As a further description of the above technical solution: the shock absorber mechanism also includes a push column arranged on the piston rod and a shielding member located on the inner side of the oil seal.

[0018] The lubricating mechanism further comprises a switching member movably mounted on an end surface of one side of the oil storage member.

[0019] As a further description of the above technical solution: a notch is provided on the inner side of the oil seal;

[0020] The shielding member includes a stopper movably mounted in the notch, and a connecting spring is provided between the stopper and the notch.

[0021] As a further description of the above technical solution: the switching member includes a rotating disk movably mounted on the outside of the fixed disk, a rotating groove is provided on the inner wall of the rotating disk, and a first push piece and a second push piece are respectively provided on one end face of the rotating disk.

[0022] As a further description of the above technical solution: the rotating groove is composed of an inclined groove and vertical grooves connected at both ends;

[0023] A straight groove is also provided on the inner wall of the fixed disk, and the straight groove is communicated with the rotating groove.

[0024] As a further description of the above technical solution: the push pin can be matched with the rotating groove and the straight groove respectively.

[0025] In the above technical scheme, the present invention provides a hollow rod hydraulic active suspension shock absorber, which can drive the oil discharge roller and the oil collection roller to rotate through the friction force as the piston rod moves through the contact cooperation between the oil discharge part and the oil collection part and the piston rod. The oil discharge roller draws out the lubricating oil in the oil storage part to lubricate the piston rod, so as to reduce the friction between the piston rod and the oil seal, and reduce the aging and wear of the oil seal during the friction with the piston rod, thereby ensuring the normal use of the shock absorber. At the same time, it can avoid abnormal noise caused by the relative movement of the oil seal and the piston rod, and the oil collection roller can recycle the excess lubricating oil to ensure continuous lubrication of the piston rod.

[0026] At the same time, through the cooperation of the switching member and the push column on the outer side of the piston rod, the switching control of the oil discharge member and the oil collection member can be realized during the movement of the piston rod, so that the oil discharge and oil collection actions can be performed alternately, avoiding the waste of lubricating oil caused by long-term oil discharge, and also avoiding the generation of a large amount of sludge due to excessive lubricating oil during the long-term use of the piston rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0028] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0029] Figure 2 A schematic cross-sectional view of an embodiment of the present invention;

[0030] Figure 3 A schematic diagram of the internal structure of an oil storage component provided in an embodiment of the present invention;

[0031] Figure 4A schematic diagram of the exploded structure of the oil storage component, oil discharge component, and oil collection component provided in an embodiment of the present invention;

[0032] Figure 5 A schematic diagram of the coordination structure of the switching member and the oil drain member provided in an embodiment of the present invention;

[0033] Figure 6 A schematic diagram of a partial structure of a piston rod provided in an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the cross-sectional structure of a shielding member on an oil seal provided by an embodiment of the present invention.

[0035] Description of reference numerals:

[0036] 100, shock absorber mechanism; 101, outer cylinder; 102, lifting ear; 103, oil seal; 103a, notch; 104, inner cylinder; 105, piston head; 106, piston rod; 107, push rod; 108, shielding member; 108a, stopper; 108b, connecting spring; 200, lubrication mechanism; 201, oil reservoir; 201a, fixed plate; 201b, oil reservoir chamber; 201c, oil filling port; 201d, sealing plug; 201e, placement chamber ; 201f, slide groove; 201g, drainage groove; 201h, straight groove; 202, oil discharge part; 202a, oil discharge roller; 202b, first positioning spring; 202c, oil discharge port; 203, oil guide groove; 204, oil collecting part; 204a, oil collecting roller; 204b, second positioning spring; 204c, oil collecting port; 205, switching part; 205a, rotating disk; 205b, rotating groove; 205c, first push plate; 205d, second push plate. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] See also Figure 1-2 , an embodiment of the present invention provides a technical solution: including a shock absorber mechanism 100.

[0039] Specifically, the shock absorber mechanism 100 includes an outer tube 101 for welding connecting parts such as lifting rings and spring trays. A lifting ear 102 is fixedly provided at one end of the outer tube 101, and an oil seal 103 is installed at the other end of the outer tube 101. An inner tube 104 is installed inside the outer tube 101, and a piston head 105 is provided inside the inner tube 104. The outer side of the piston head 105 is connected to a piston rod 106.

[0040] Furthermore, the piston rod 106 adopts a hollow rod structure, which can realize the connection between the shock absorber compression chamber and the external oil circuit, thereby realizing the tension, compression and damping force adjustment of the shock absorber by controlling the amount and flow rate of oil entering and exiting the compression chamber. At the same time, although the shock absorber is a double-tube structure, there is no oil between the outer tube 101 and the inner tube 104. The outer tube 101 is only used as a connecting piece for welding rings, spring trays, etc.

[0041] See also Figure 1-4 , an embodiment of the present invention provides a technical solution: including a lubrication mechanism 200.

[0042] Specifically, the lubrication mechanism 200 is arranged at one end of the shock absorber mechanism 100 and is used to lubricate the shock absorber mechanism 100. It includes an oil storage part 201 arranged at one end of the shock absorber mechanism 100, and an oil drain part 202 and an oil collecting part 204 are respectively installed on both sides of the interior of the oil storage part 201. An oil guide groove 203 is also left on the inner wall of the oil storage part 201.

[0043] Furthermore, the oil storage part 201 includes a fixed plate 201a fixed to the end face of one side of the oil seal 103, and the interior of the fixed plate 201a is provided with an annular oil storage chamber 201b, and the fixed plate 201a is provided with a refueling port 201c in a direction perpendicular to the oil storage chamber 201b, and the refueling port 201c extends to the surface of the fixed plate 201a. The user can replenish the lubricating oil inside the oil storage chamber 201b through the refueling port 201c, and a sealing plug 201d is installed inside the refueling port 201c, and the sealing plug 201d and the refueling port 201c are threadedly matched to facilitate the locking between the sealing plug 201d and the refueling port 201c, and at the same time, the interior of the fixed plate 201a is symmetrically provided with placement chambers 201e, and the two placement chambers 201e are provided with sliding grooves 201f on both sides of the inner wall.

[0044] The oil drain member 202 includes an oil drain roller 202a rotatably installed in the placement cavity 201e, and both ends of the roller shaft of the oil drain roller 202a extend into the slide grooves 201f on both sides of the inner wall of the placement cavity 201e, and a first positioning spring 202b is installed between the roller shaft of the oil drain roller 202a and the slide groove 201f. The first positioning spring 202b can elastically support the oil drain roller 202a to achieve the positioning of the oil drain roller 202a. At the same time, oil drain ports 202c are provided on both side end faces of the oil drain roller 202a, and the oil drain ports 202c are arranged in a circular array along the periphery of the oil drain roller 202a.

[0045] The oil collecting member 204 includes an oil collecting roller 204a rotatably fixedly mounted in another placement cavity 201e, both ends of the roller shaft of the oil collecting roller 204a also extend into the slide groove 201f, and a second positioning spring 204b is installed between the roller shaft of the oil collecting roller 204a and the slide groove 201f to elastically support the oil collecting roller 204a, and a plurality of oil collecting ports 204c are also provided in a circular array on the end faces of both sides of the oil collecting roller 204a.

[0046] A drainage groove 201g is also provided inside the fixed plate 201a. The drainage groove 201g is located on one side of the oil collecting part 204. The lower end of the drainage groove 201g is connected to the oil storage chamber 201b, and the other end of the drainage groove 201g is located on the rotation path of the oil collecting port 204c on the oil collecting roller 204a.

[0047] Preferably, the oil drain roller 202a and the oil collecting roller 204a are both arranged on the path of the oil storage chamber 201b, and the oil drain roller 202a and the oil collecting roller 204a are tangent to the inner wall of the fixed plate 201a, that is, the side surfaces of the oil drain roller 202a and the oil collecting roller 204a are tangent to the piston rod 106, so that when the piston rod 106 moves relative to the inner cylinder 104, the piston rod 106 can use the friction between the oil drain roller 202a and the oil collecting roller 204a to make the two rollers rotate, and at the same time, the oil storage chamber 201b and the oil guide groove 203 are both on the rotation path of the oil drain port 202c on the oil drain roller 202a , and then when the oil drain port 202c passes through the oil storage chamber 201b, the lubricating oil can enter the oil drain port 202c, and as the oil drain roller 202a rotates, when the oil drain port 202c rotates to the oil guide groove 203, the lubricating oil can be transferred to the oil guide groove 203 through the oil drain port 202c, and under the inclined setting of the groove wall on one side of the oil guide groove 203, gradually flows to the outer wall of the piston rod 106, so as to achieve lubrication of the piston rod 106, reduce the friction between the piston rod 106 and the oil seal 103 during the movement, reduce the loss of the oil seal 103, ensure the normal use of the shock absorber, and also avoid abnormal noise generated by the piston rod 106 during the movement.

[0048] Furthermore, two groups of oil guide grooves 203 are symmetrically arranged on the inner wall of the fixed plate 201a, and the two ends of the oil guide grooves 203 are respectively provided with an oil discharge roller 202a and an oil collection roller 204a. At the same time, the oil guide grooves 203 are arranged at an angle on the inner wall of the oil storage member 201, that is, the oil discharge roller 202a is located at the higher end of the oil guide grooves 203, and the oil collection roller 204a is located at the lower end of the oil guide grooves 203. Therefore, through the inclined setting of the oil guide grooves 203, the lubricant discharged by the oil discharge roller 202a can be It is evenly dispersed to various places on the inner wall of the fixed plate 201a, and finally gathered at the lowest point of the oil guide groove 203. At the same time, the lowest point of the oil guide groove 203 and the drainage groove 201g are both located on the rotation path of the oil receiving port 204c. Therefore, when the oil collecting roller 204a rotates, the excess lubricating oil inside the oil guide groove 203 can enter the oil receiving port 204c, and with the help of the rotation of the oil receiving port 204c, it is flushed through the drainage groove 201g and introduced into the oil storage chamber 201b for recovery, thereby avoiding waste of lubricating oil.

[0049] It should be noted that both side end surfaces of the oil discharge roller 202a and the oil collection roller 204a are in contact with the interior of the placement cavity 201e to ensure that both are connected to the oil storage cavity 201b while preventing the lubricating oil in the oil storage cavity 201b from leaking.

[0050] During use, during the operation of the shock absorber, the piston rod 106 and the inner cylinder 104 move relative to each other, so that the movement of the piston rod 106 can drive the oil discharge roller 202a and the oil collection roller 204a to rotate. At this time, with the cooperation of the oil discharge port 202c and the oil collection port 204c, the lubricating oil in the oil storage chamber 201b can enter the oil guide groove 203 to lubricate the outer wall of the piston rod 106. At the same time, the excess lubricating oil can be recovered to the oil storage chamber 201b again through the oil collection port 204c under the guidance of the oil guide groove 203. Such a cycle can ensure continuous lubrication of the outer wall of the piston rod 106 to reduce the friction between the piston rod 106 and the oil seal 103.

[0051] In summary, with the cooperation of the oil drain member 202 and the oil collecting member 204, the lubricating oil in the oil storage member 201 can be drawn out to lubricate the piston rod 106 as the piston rod 106 moves, so as to reduce the friction between the piston rod 106 and the oil seal 103, reduce the aging and wear of the oil seal 103 during the friction with the piston rod 106, ensure the normal use of the shock absorber, and at the same time avoid abnormal noise caused by the relative movement of the oil seal 103 and the piston rod 106, and the excess lubricating oil can be recycled to ensure continuous lubrication of the piston rod 106.

[0052] See also Figure 1-7 In another embodiment provided by the present invention, it includes a push column 107, a blocking member 108 and a switching member 205.

[0053] Specifically, a notch 103 a is provided on the inner side of the oil seal 103 .

[0054] The shock absorber mechanism 100 further includes a push post 107 disposed on the piston rod 106 and a shielding member 108 located inside the recess 103 a of the oil seal 103 .

[0055] The lubricating mechanism 200 further includes a switching member 205 movably mounted on an end surface of one side of the oil storage member 201 .

[0056] Furthermore, the blocking member 108 includes a block 108a movably installed in the recess 103a. The block 108a can block the recess 103a to ensure the integrity of the oil seal 103 without affecting the sealing effect of the oil seal 103. A connecting spring 108b is provided between the block 108a and the recess 103a. At the same time, the two sides of the baffle parallel to the end face of the oil seal 103 are wedge-shaped, so that the block 108a can be elastically extended and retracted relative to the recess 103a through the elastic force of the connecting spring 108b, and the passage requirement of the push column 107 is met under the retractable setting of the block 108a.

[0057] The switching member 205 includes a rotating disk 205a movably mounted on the outside of the fixed disk 201a. A rotating groove 205b is provided on the inner wall of the rotating disk 205a. A first push piece 205c and a second push piece 205d are respectively provided on the end surface of the rotating disk 205a adjacent to the oil discharge roller 202a.

[0058] Furthermore, the rotating groove 205b is composed of an inclined groove and vertical grooves connected at both ends thereof, and the rotating groove 205b is in sliding cooperation with the push column 107, so that when the push column 107 moves with the piston rod 106, the push column 107 can enter the inclined groove section of the rotating groove 205b from the vertical groove of the rotating groove 205b, and then, under the cooperation of the push column 107 and the inclined groove section of the rotating groove 205b, the rotating disk 205a can be pushed to rotate, at this time, the position change between the first push piece 205c and the second push piece 205d can be realized, and the oil discharge roller 202a and the oil collection roller 204a are respectively on the rotation paths of the first push piece 205c and the second push piece 205d, and the first push piece 205c and the second push piece 205d are both The end surface of the rotating disk 205a is inclined radially outward. Therefore, when the rotating disk 205a rotates, the position of the first push piece 205c and the second push piece 205d is changed, so that the oil discharge roller 202a or the oil collecting roller 204a can be pushed to slide along the slide groove 201f, thereby realizing the separate control of the tangent state between the oil discharge roller 202a or the oil collecting roller 204a and the fixed disk 201a, and then the oil discharge part 202 or the oil collecting part 204 can be made to move alone when the piston rod 106 moves. At the same time, the user can flexibly set the relative position of the push column 107 on the piston rod 106 according to actual needs, so that the oil discharge distance of the oil discharge part 202 can be adjusted by setting the position of the push column 107.

[0059] A straight groove 201h is also provided on the inner wall of the fixed disk 201a, which is connected to the rotating groove 205b, and the push column 107 can also slide with the straight groove 201h, so that the push column 107 passing through the rotating groove 205b can move smoothly into the straight groove 201h to ensure the smooth movement of the piston rod 106.

[0060] During use, in the initial state, the first push piece 205c is not in contact with the oil release roller 202a, that is, the oil release roller 202a remains tangent to the inner wall of the fixed disk 201a, and the second push piece 205d is located at the lower part of the oil collection roller 204a, so that the oil collection roller 204a is in an extruded state, that is, at this time the oil collection roller 204a is not tangent to the fixed disk 201a. At this time, as the piston rod 106 moves, the piston rod 106 rubs against the oil release roller 202a to release the lubricating oil, thereby achieving the purpose of continuing to lubricate the outer wall of the piston rod 106. As the piston rod 106 moves, when the push column 107 passes through the rotating groove 205b, it can drive the rotating disk 205a to rotate. At this time, the first push piece 205c With the movement of the second push piece 205d, the positions of the oil drain roller 202a and the oil collecting roller 204a are switched, that is, the first push piece 205c pushes the oil drain roller 202a to move outward, releasing the tangency between it and the fixed plate 201a, so that the oil drain roller 202a no longer rotates to drain oil during the subsequent movement of the piston rod 106, and the oil collecting roller 204a is tangent to the inner wall of the fixed plate 201a under the cooperation of the second push piece 205d and the second positioning spring 204b. At this time, the oil collecting roller 204a can be rotated under the movement of the piston rod 106 to achieve secondary recovery of excess lubricating oil, and after the piston rod 106 is reset, the oil drain roller 202a and the oil collecting roller 204a can return to their initial state.

[0061] In summary, through the cooperation of the switching member 205 and the outer push column 107 of the piston rod 106, the switching control of the oil discharge member 202 and the oil collection member 204 can be realized during the movement of the piston rod 106, so that the oil discharge and oil collection actions can be performed alternately, avoiding the waste of lubricating oil caused by long-term oil discharge, and also avoiding the generation of a large amount of sludge due to excessive lubricating oil during the long-term use of the piston rod 106.

[0062] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A hollow rod hydraulic active suspension shock absorber, characterized in that: include, A shock absorber mechanism (100) comprises an outer cylinder (101), a lifting ear (102) located at one end of the outer cylinder (101), an oil seal (103) located at the other end of the outer cylinder (101), an inner cylinder (104) located inside the outer cylinder (101), a piston head (105) located inside the inner cylinder (104), and a piston rod (106) located outside the piston head (105); and, The lubricating mechanism (200) comprises an oil storage member (201) provided at one end of the shock absorber mechanism (100), an oil discharge member (202) and an oil collection member (204) being respectively installed on both sides of the interior of the oil storage member (201), and an oil guide groove (203) being further provided on the inner wall of the oil storage member (201); The oil storage member (201) comprises a fixed disk (201a), an oil storage cavity (201b) is provided inside the fixed disk (201a), a refueling port (201c) is provided on one side of the oil storage cavity (201b), the refueling port (201c) extends to the surface of the fixed disk (201a), a sealing plug (201d) is installed inside the refueling port (201c), and placement cavities (201e) are symmetrically provided inside the fixed disk (201a), and a sliding groove (201f) is provided on the inner walls of the two placement cavities (201e); The oil discharge member (202) comprises an oil discharge roller (202a), both ends of the roller shaft of the oil discharge roller (202a) extend into the slide groove (201f), a first positioning spring (202b) is installed between the roller shaft of the oil discharge roller (202a) and the slide groove (201f), and an oil discharge port (202c) is provided on the end surface of the oil discharge roller (202a); The oil collecting member (204) includes an oil collecting roller (204a), both ends of the roller shaft of the oil collecting roller (204a) also extend into the slide groove (201f), a second positioning spring (204b) is installed between the roller shaft of the oil collecting roller (204a) and the slide groove (201f), and an oil collecting port (204c) is provided on the end surface of the oil collecting roller (204a); The shock absorber mechanism (100) further includes a push column (107) provided on the piston rod (106) and a shielding member (108) located on the inner side of the oil seal (103); The lubricating mechanism (200) further includes a switching member (205) movably mounted on an end surface of one side of the oil storage member (201); The switching member (205) comprises a rotating disk (205a) movably mounted on the outside of the fixed disk (201a), a rotating groove (205b) being provided on the inner wall of the rotating disk (205a), a first push piece (205c) and a second push piece (205d) being provided on one end surface of the rotating disk (205a), and the rotating groove (205b) being composed of an inclined groove and vertical grooves communicating at both ends thereof; A straight groove (201h) is also provided on the inner wall of the fixed disk (201a), and the straight groove (201h) is connected to the rotating groove (205b).

2. The hollow rod oil pressure active suspension shock absorber according to claim 1, characterized in that: The oil guide groove (203) is arranged obliquely on the inner wall of the oil storage member (201).

3. The hollow rod oil pressure active suspension shock absorber according to claim 1, characterized in that: The oil discharge roller (202a) and the oil collection roller (204a) are both arranged on the path of the oil storage cavity (201b); The two ends of the oil guide groove (203) are respectively located on the rotation paths of the oil discharge port (202c) and the oil collection port (204c); A drainage groove (201g) is further provided inside the fixed disk (201a), the drainage groove (201g) being located on one side of the oil collecting member (204), and the drainage groove (201g) being connected to the oil storage cavity (201b); The top end of the drainage groove (201g) is located on the rotation path of the oil collecting roller (204a).

4. The hollow rod oil pressure active suspension shock absorber according to claim 1, characterized in that: A notch (103a) is provided on the inner side of the oil seal (103); The shielding member (108) comprises a stopper (108a) movably mounted in the recess (103a), and a connecting spring (108b) is provided between the stopper (108a) and the recess (103a).

5. The hollow rod oil pressure active suspension shock absorber according to claim 1, characterized in that: The push column (107) can be matched with the rotating groove (205b) and the straight groove (201h) respectively.

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