Sealing guide structure and oil damper

Abstract

The oil damper comprises a shell, a working cylinder and a piston rod from outside to inside, the piston rod penetrates through one end of the working cylinder, the sealing guide structure is arranged at the end, penetrated by the piston rod, of the working cylinder, and the sealing guide structure is characterized in that a supporting guide body is sleeved on the periphery of the piston rod; connecting the piston rod, the working cylinder and the shell; the piston rod penetrates through the pressing plate, the peripheral side of the pressing plate is connected with the shell, the inner side part of the pressing plate is connected with the supporting guide body, and a cavity is formed between the pressing plate and the supporting guide body; the sealing mechanism is located in the cavity, the fixed end of the sealing mechanism is connected with the supporting guide body and the pressing plate, the follow-up end of the sealing mechanism is connected with the piston rod, and the middle part of the sealing mechanism stretches out and draws back or horizontally moves along with the follow-up end and is elastic so that the sealing mechanism can move along with the connecting end of the sealing mechanism and the piston rod. According to the utility model, the sealing guide structure optimizes the sealing mechanism and prolongs the service life of parts.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rail transit technical field, especially relate to a sealed guide structure and oil pressure shock absorber. BACKGROUND

[0002] Vibration and impact will be generated due to uneven road surface during the driving of the vehicle, at this time, the shock absorber needs to be installed in the vehicle to attenuate the vibration, so that the vehicle can travel stably. Selecting a suitable shock absorber to relieve vibration can not only ensure the safety of the vehicle and prolong the service life of the vehicle, but also bring comfortable experience to the passengers.

[0003] At present, the oil pressure shock absorber is widely used in locomotive. In the working process of the oil pressure shock absorber, the dynamic seal in the internal and the piston rod are in interference fit. Due to the different oil pressure of each part in the oil pressure shock absorber, the low oil pressure area is at the dynamic seal, the lip of the dynamic seal does not bear the oil pressure, and only does the simple oil scraping action when the piston rod moves.

[0004] However, during the movement of the piston rod, the piston rod and the dynamic seal exist relative sliding, which will increase the wear of the dynamic seal and reduce the service life of the parts. CONTENT OF THE UTILITY MODEL

[0005] In view of the deficiencies in the related art, the utility model provides a sealed guide structure and oil pressure shock absorber, which optimizes the sealing mechanism and prolongs the service life of the parts, so as to solve the technical problems of large wear of the dynamic seal and short service life of the parts in the prior art.

[0006] The utility model provides a sealed guide structure for shock absorber, the shock absorber comprises an outer shell, a working cylinder and a piston rod from outside to inside, the piston rod penetrates one end of the working cylinder, and comprises:

[0007] A support guide body is located at one end of the working cylinder and between the piston rod and the outer shell, is sleeved on the outer periphery of the piston rod, and is connected with the piston rod, the working cylinder and the outer shell;

[0008] A pressing plate is penetrated by the piston rod, the peripheral side of the pressing plate is connected with the outer shell, the inner side of the pressing plate is connected with the support guide body, and a cavity is formed between the pressing plate and the support guide body;

[0009] A sealing mechanism is located in the cavity, the fixed end of the sealing mechanism is connected with the support guide body and the pressing plate, the follow-up end is connected with the piston rod, the middle part of the sealing mechanism can be stretched or horizontally moved along with the follow-up end, the middle part of the sealing mechanism has elasticity, so that it can move along with the connection end of the piston rod.

[0010] The sealing mechanism does not slide relative to the piston rod at a small amplitude, maintains a static sealing state, and reduces relative movement of the following end of the sealing mechanism and the piston rod, thereby reducing wear of the sealing mechanism and prolonging the service life of the sealing mechanism.

[0011] In some embodiments, the sealing mechanism comprises:

[0012] A first sealing member is located at the fixed end of the sealing mechanism, connected and fixed between the support guide body and the pressing plate.

[0013] A second sealing member is located at the following end of the sealing mechanism, connected to the outer wall of the piston rod.

[0014] An elastic connecting member in the shape of a wavy strip connects the first sealing member and the second sealing member.

[0015] The parts of the sealing mechanism have clear division of labor, and the wavy design of the elastic connecting member enhances the flexibility and adaptability of the sealing mechanism.

[0016] In some embodiments, the second sealing member is provided with multiple serrated sealing lips on one side connected to the outer wall of the piston rod, and any sealing lip comprises a front lip and a rear lip that fit on the piston rod.

[0017] The serrated sealing lip design significantly improves the sealing performance, and the increased contact area and friction force can more effectively block the leakage of the working medium, thereby improving the sealing reliability of the shock absorber.

[0018] In some embodiments, the support guide body is provided with a groove, and the part of the sealing mechanism connected to the support guide body is placed in the groove and abuts against the groove.

[0019] When installed, this end of the sealing mechanism is fixed in the groove, and the groove provides positioning and support for the sealing mechanism, so that its position is stable during operation and is not easy to deviate.

[0020] In some embodiments, an oil storage chamber is formed between the housing and the working cylinder, and an oil delivery pipeline is arranged inside the support guide body, which penetrates the support guide body and communicates the oil storage chamber with the cavity.

[0021] The design of the oil delivery pipeline realizes the communication between the oil storage chamber and the cavity, provides the necessary working conditions for the sealing mechanism, and prolongs the service life of the sealing mechanism.

[0022] In some embodiments, the shock absorber further comprises:

[0023] A guide ring in the shape of a ring is embedded in the support guide body, connected to the piston rod on the inside and connected to the support guide body on the outside.

[0024] The guide ring improves the smoothness and precision of the piston rod movement, and reduces friction and wear.

[0025] In some embodiments, the support guide body is provided with a buffer mounting groove on the matching side of the piston rod; the sealing guide mechanism further comprises a buffer, which is arranged in the buffer mounting groove, and the inner side of the buffer is attached to the outer wall of the piston rod.

[0026] The buffer enhances the buffering capacity of the structure, and effectively protects the piston rod and the support guide body.

[0027] In some embodiments, the sealing guide structure further comprises:

[0028] A gasket is annularly arranged between the pressing plate and the support guide body, and the inner side of the gasket is attached to the support guide body, and the outer side of the gasket is provided with a gap relative to the shell.

[0029] The gasket protects the contact surface of the pressing plate and the support guide body, and prolongs the service life of the parts.

[0030] In some embodiments, the sealing guide structure further comprises:

[0031] A static seal is arranged between the gasket and the support guide body, and connects the gasket, the support guide body and the shell.

[0032] The static seal further improves the sealing performance of the structure, effectively prevents medium leakage, and improves the reliability and stability of the shock absorber.

[0033] In addition, the utility model also provides an oil pressure shock absorber, contains above-mentioned sealing guide structure.

[0034] When the oil pressure shock absorber works, the internal working medium flows under the action of pressure, generates damping force through the piston rod and other components, and realizes the damping function.

[0035] Based on the above technical scheme, in the small vibration case, the middle part of the sealing mechanism can be stretched and horizontally displaced, the connection part of the sealing mechanism and the piston rod remains relatively static, and excessive wear of the sealing mechanism is avoided, so that the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0036] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the present application. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:

[0037] Figure 1It is a structure schematic view of one embodiment of the sealing guide structure and the oil pressure damper of the utility model.

[0038] Figure 2 It is a structure schematic view of one embodiment of the sealing guide structure and the oil pressure damper of the utility model.

[0039] Figure 3 It is a structure schematic view of A part of one embodiment of the sealing guide structure and the oil pressure damper of the utility model.

[0040] In the drawing,

[0041] 1, piston rod; 2, pressing plate; 3, first sealing element; 4, support guide body; 5, buffer element; 6, shell; 7, working cylinder; 8, static sealing element; 9, gasket; 10, oil pipeline; 11, elastic connecting element; 12, second sealing element. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0043] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the drawing shown, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0044] The terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third" can explicitly or implicitly include one or more of the features.

[0045] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "installation", "connection" should be broad sense understanding, for example, it can be fixed connection, also can be detachable connection, or integrally connected, it can be direct connection, also can be indirect connection through intermediate medium, it can be two element internal communication, for ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to specific circumstances.

[0046] As shown in the utility model sealing guide structure, for example, in one illustrative embodiment, the sealing guide structure is used in a shock absorber, and the shock absorber comprises, from the outside to the inside, a shell 6, a working cylinder 7 and a piston rod 1, and the piston rod 1 penetrates one end of the working cylinder 7. Figure 1 As shown in the utility model sealing guide structure, for example, in one illustrative embodiment, the sealing guide structure is used in a shock absorber, and the shock absorber comprises, from the outside to the inside, a shell 6, a working cylinder 7 and a piston rod 1, and the piston rod 1 penetrates one end of the working cylinder 7.

[0047] The sealing guide structure comprises a support guide body 4, a pressing plate 2 and a sealing mechanism.

[0048] The support guide body 4 is located at one end of the working cylinder 7 and between the piston rod 1 and the shell 6, is sleeved on the outer periphery of the piston rod 1, and connects the piston rod 1, the working cylinder 7 and the shell 6. Figure 1 As shown in the utility model sealing guide structure, for example, in one illustrative embodiment, the sealing guide structure is used in a shock absorber, and the shock absorber comprises, from the outside to the inside, a shell 6, a working cylinder 7 and a piston rod 1, and the piston rod 1 penetrates one end of the working cylinder 7.

[0049] The piston rod 1 penetrates the pressing plate 2, the peripheral side of the pressing plate 2 is connected to the shell 6, the inner side of the pressing plate 2 is connected to the support guide body 4, and a cavity is formed between the pressing plate 2 and the support guide body 4. Figure 1 As shown in the utility model sealing guide structure, for example, in one illustrative embodiment, the sealing guide structure is used in a shock absorber, and the shock absorber comprises, from the outside to the inside, a shell 6, a working cylinder 7 and a piston rod 1, and the piston rod 1 penetrates one end of the working cylinder 7.

[0050] Working medium is stored in the cavity, the working cylinder 7 and between the working cylinder 7 and the shell 6. The working medium can be oil.

[0051] The sealing mechanism is located in the cavity, the fixed end of the sealing mechanism is connected to the support guide body 4 and the pressing plate 2, the follow-up end is connected to the piston rod 1, and the middle part of the sealing mechanism follows the follow-up end to stretch or move horizontally, and at least the middle part of the sealing mechanism is designed as an elastic structure, so that it can move with the connection end of the sealing mechanism and the piston rod 1.

[0052] The support guide body 4 is sleeved on the outer periphery of the piston rod 1 at one end of the working cylinder 7, and connects the piston rod 1, the working cylinder 7 and the shell 6, thereby providing support for the whole structure and providing a guide basis for the movement of the piston rod 1. The pressing plate 2 is penetrated by the piston rod 1, and the peripheral side is connected to the shell 6, and the inner side is connected to the support guide body 4, thereby forming a cavity therebetween. The sealing mechanism is located in the cavity, and the fixed end is connected to the support guide body 4 and the pressing plate 2, and the follower end is connected to the piston rod 1. When the piston rod 1 moves, the follower end of the sealing mechanism moves accordingly. Since the middle part has elasticity, it can stretch or move horizontally to follow the follower end, thereby always maintaining the sealing of the piston rod 1.

[0053] Through the cooperative design of the support guide body 4, the pressing plate 2 and the sealing mechanism, effective support, guidance and sealing of the piston rod 1 are realized, the stability of the internal structure of the shock absorber is ensured, the leakage of the working medium is prevented, and the reliability and service life of the shock absorber are improved. The sealing mechanism does not produce relative sliding with the piston rod 1 under small amplitude, maintains the state of static sealing, the relative movement between the follower end of the sealing mechanism and the piston rod 1 is reduced, the wear of the sealing mechanism is reduced, and the service life of the sealing mechanism is prolonged.

[0054] In combination with reference Figure 1 and Figure 2 In some embodiments, the sealing mechanism comprises:

[0055] The first sealing member 3 is located at the fixed end of the sealing mechanism, and is connected and fixed between the support guide body 4 and the pressing plate 2.

[0056] The second sealing member 12 is located at the follower end of the sealing mechanism, and is connected to the outer wall of the piston rod 1.

[0057] The elastic connecting member 11 is in the shape of a wavy long strip, and connects the first sealing member 3 and the second sealing member 12.

[0058] The first sealing member 3 of the sealing mechanism, as the fixed end, is pressed between the support guide body 4 and the pressing plate 2, and is fixed by the pressure therebetween. The second sealing member 12, as the follower end, is connected to the piston rod 1. In order to improve the fixation and flexibility of the sealing mechanism, the fixed end and the follower end can be designed to be wider than the middle end.

[0059] The first sealing member 3 is fixed between the support guide body 4 and the pressing plate 2, and serves as the fixed end of the sealing mechanism, thereby stabilizing the whole sealing mechanism. The second sealing member 12 is located at the follower end, and is connected to the outer wall of the piston rod 1, thereby following the movement of the piston rod 1. The elastic connecting member 11 is in the shape of a wavy long strip, and connects the first sealing member 3 and the second sealing member 12. When the piston rod 1 moves, the second sealing member 12 drives the elastic connecting member 11, and since the wavy structure has elastic deformation capability, it can adapt to the movement of the piston rod 1. The first sealing member 3 is fixedly connected, the sealing mechanism remains stable, and the sealing of the piston rod 1 is maintained while the displacement is not easy.

[0060] The structure design makes the parts of the sealing mechanism have clear division of labor, and the wavy design of the elastic connecting piece 11 enhances the flexibility and adaptability of the sealing mechanism, which can better follow the movement of the piston rod 1, improve the sealing effect, and effectively reduce the risk of leakage.

[0061] As shown in Figure 3 some embodiments, the second sealing piece 12 is provided with multiple sawtooth-shaped sealing lips on the side connected to the outer wall of the piston rod 1, and each sealing lip includes a front lip and a rear lip that fit on the piston rod 1.

[0062] The second sealing piece 12 is provided with multiple sawtooth-shaped sealing lips on the side connected to the outer wall of the piston rod 1, and the front lip and the rear lip of each sealing lip fit on the piston rod 1. When the piston rod 1 moves, the sealing lip moves with the piston rod 1, and the sawtooth design increases the contact area and friction between the sealing lip and the piston rod 1. The front lip and the rear lip tightly fit the piston rod 1, further preventing the working medium from leaking along the outer wall of the piston rod 1.

[0063] The design of the sawtooth-shaped sealing lip greatly improves the sealing performance, and the increased contact area and friction can more effectively block the leakage of the working medium, improving the sealing reliability of the shock absorber, especially for working conditions with high sealing requirements. With the help of friction and the pressure exerted by the working medium on the sealing lip, in the case of small amplitude, the sealing lip and the outer wall of the piston rod 1 remain relatively stationary, reducing the friction between the sealing lip and the outer wall of the piston rod 1, thereby reducing the wear of the second sealing piece 12 to prolong the service life of the second sealing piece 12. In the case of large amplitude, the sealing lip and the piston rod 1 produce relative displacement, which can clean the oil film on the piston rod 1 multiple times, thereby better sealing and dustproof.

[0064] In some embodiments, the support guide body 4 is provided with a groove, and the part of the sealing mechanism connected to the support guide body 4 is placed in the groove and abuts against the groove.

[0065] The support guide body 4 is provided with a groove, and the end of the sealing mechanism connected to the support guide body 4 is placed in the groove and abuts against the groove. During installation, this end of the sealing mechanism is fixed in the groove, which provides positioning and support for the sealing mechanism, making its position stable during work and less likely to shift, ensuring that the sealing mechanism can normally play a sealing role.

[0066] The provision of the groove enhances the stability and reliability of the installation of the sealing mechanism, ensuring that the sealing mechanism can be accurately positioned during work, avoiding sealing failure due to displacement, thereby improving the stability and sealing performance of the entire sealing guide structure.

[0067] In some embodiments, an oil storage chamber is formed between the shell 6 and the working cylinder 7, and an oil delivery pipeline 10 is arranged inside the support guide body 4, penetrating the support guide body 4 and connecting the oil storage chamber and the cavity.

[0068] An oil storage chamber is formed between the shell 6 and the working cylinder 7, and an oil delivery pipeline 10 is arranged inside the support guide body 4, penetrating the support guide body 4 and connecting the oil storage chamber and the cavity. When the shock absorber is working, the working medium in the oil storage chamber can enter the cavity through the oil delivery pipeline 10, providing lubrication and cooling for the sealing mechanism, and also balancing the pressure in the cavity to ensure that the sealing mechanism works in a suitable pressure environment.

[0069] The design of the oil delivery pipeline 10 realizes the connection between the oil storage chamber and the cavity, providing necessary working conditions for the sealing mechanism, prolonging the service life of the sealing mechanism, and improving the stability and reliability of the shock absorber.

[0070] In some embodiments, the sealing guide structure further comprises:

[0071] The guide ring is annularly embedded in the support guide body 4, with the inner side connected to the piston rod 1 and the outer side connected to the support guide body 4.

[0072] The guide ring is annularly embedded in the support guide body 4, with the inner side connected to the piston rod 1 and the outer side connected to the support guide body 4. When the piston rod 1 moves, the guide ring guides the piston rod 1 to move smoothly along the axial direction under the constraint of the support guide body 4, reducing the friction and wear between the piston rod 1 and the support guide body 4, while ensuring the accuracy and stability of the movement of the piston rod 1.

[0073] The guide ring improves the smoothness and accuracy of the movement of the piston rod 1, reduces friction and wear, prolongs the service life of the piston rod 1 and the support guide body 4, and thus improves the overall performance and reliability of the shock absorber.

[0074] In some embodiments, the support guide body 4 and the mating side of the piston rod 1 are provided with a buffer 5 mounting groove; the sealing guide mechanism further comprises a buffer 5 arranged in the buffer 5 mounting groove, with the inner side of the buffer 5 abutting the outer wall of the piston rod 1.

[0075] The support guide body 4 and the mating side of the piston rod 1 are provided with a buffer 5 mounting groove, and the buffer 5 is mounted in the groove with the inner side abutting the outer wall of the piston rod 1. When the piston rod 1 moves, if it is impacted or vibrated, the buffer 5 can absorb part of the energy, reducing the impact force of the piston rod 1 on the support guide body 4, playing a role in buffering and shock absorption, and protecting the support guide body 4 and the piston rod 1.

[0076] The arrangement of the buffer 5 enhances the buffering capacity of the structure, effectively protects the piston rod 1 and the support guide body 4, reduces the damage of impact to the structure, and improves the working stability and reliability of the shock absorber under complex working conditions.

[0077] In some embodiments, the sealing guide structure further comprises:

[0078] The gasket 9 is annular, located between the pressing plate 2 and the support guide body 4, and is attached to the support guide body 4 on the inner side and has a gap with the outer shell 6 on the outer side.

[0079] The gasket 9 is annular, located between the pressing plate 2 and the support guide body 4, and is attached to the support guide body 4 on the inner side and has a gap with the outer shell 6 on the outer side. The gasket 9 plays a role of isolation and buffering, reducing the direct friction between the pressing plate 2 and the support guide body 4, and at the same time, the gap with the outer shell 6 allows a certain degree of thermal expansion and contraction, avoiding structural deformation or damage caused by temperature changes.

[0080] The design of the gasket 9 protects the contact surface of the pressing plate 2 and the support guide body 4, prolonging the service life of the parts, and the gap design with the outer shell 6 improves the adaptability of the structure to temperature changes and enhances the stability of the entire sealing guide structure.

[0081] In some embodiments, the sealing guide structure further comprises:

[0082] The static seal 8 is located between the gasket 9 and the support guide body 4, connecting the gasket 9, the support guide body 4 and the outer shell 6.

[0083] The static seal 8 is located between the gasket 9 and the support guide body 4, connecting the gasket 9, the support guide body 4 and the outer shell 6. The static seal 8 prevents leakage of the working medium between the gasket 9, the support guide body 4 and the outer shell 6 through its sealing performance, ensuring the sealing of the entire structure.

[0084] The setting of the static seal 8 further improves the sealing performance of the structure, effectively prevents medium leakage, and improves the reliability and stability of the shock absorber.

[0085] Based on the above sealing guide structure, the utility model also provides an oil pressure shock absorber, which comprises the above sealing guide structure.

[0086] When the oil pressure shock absorber is working, the internal working medium flows under the action of pressure, generates damping force through the piston rod 1 and other components, and realizes the damping function. The support guide body 4, the pressing plate 2, the sealing mechanism and the like in the sealing guide structure work cooperatively to ensure the smoothness and sealing of the piston rod 1, providing protection for the normal work of the oil pressure shock absorber.

[0087] The oil pressure shock absorber using the sealing guide structure in each of the above embodiments has higher working stability, reliability and service life. The components work cooperatively to ensure the stability of the internal structure of the shock absorber, effectively improve the performance of the shock absorber, and better meet the requirements of various application scenarios for the shock absorber. The other positive technical effects of the sealing guide structure in each of the above embodiments are also applicable to the oil pressure shock absorber, which will not be repeated here.

[0088] From the description of the multiple embodiments of the sealing guide structure and the oil pressure shock absorber of the utility model, it can be seen that the sealing guide structure and the oil pressure shock absorber embodiments of the utility model have at least one or more of the following advantages:

[0089] 1. The follower end of the sealing mechanism is adsorbed on the outer wall of the piston rod 1 under the action of the working medium pressure. In the case of small vibration, the follower end can move with the piston rod 1 by means of the elastic connecting piece 11, and the piston rod 1 remains relatively stationary, reducing the repeated friction of the sealing mechanism on the piston rod 1, causing part wear and reducing service life.

[0090] 2. The cavity is formed between the pressing plate 2 and the support guide body 4, which provides space for the installation of the sealing mechanism, and on the other hand, the cavity is communicated with the oil storage chamber, which can share the pressure generated by the flow of the working medium during the working process of the oil pressure shock absorber.

[0091] Finally, it should be noted that: each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts of each embodiment can be referred to.

[0092] The above embodiments are only used to illustrate the technical solutions of the utility model and not to limit them. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the utility model can be modified or some technical features can be replaced by equivalents without departing from the spirit of the utility model. They should be covered in the technical solution range of the utility model claimed.

Claims

1. A sealing guide structure for use in a shock absorber, the shock absorber comprising, from the outside in, a housing, a working cylinder and a piston rod, the piston rod penetrating through one end of the working cylinder, characterized in that, The application relates to a sealing guide structure of a hydraulic cylinder. The sealing guide structure comprises: a support guide body arranged at one end of the working cylinder and between the piston rod and the shell, sleeved on the outer periphery of the piston rod, connected with the piston rod, the working cylinder and the shell; a pressing plate through which the piston rod penetrates, the peripheral side of the pressing plate connected with the shell, the inner side of the pressing plate connected with the support guide body, a cavity formed between the pressing plate and the support guide body; 2. The seal guide structure of claim 1, wherein, a sealing mechanism arranged in the cavity, the fixed end of the sealing mechanism connected with the support guide body and the pressing plate, the follow-up end connected with the piston rod, the middle part of the sealing mechanism telescopic or horizontally movable along with the follow-up end, the middle part of the sealing mechanism having elasticity so as to move along with the connection end of the piston rod. The sealing mechanism comprises: a first sealing element arranged at the fixed end of the sealing mechanism and connected and fixed between the support guide body and the pressing plate; a second sealing element arranged at the follow-up end of the sealing mechanism and connected with the outer wall of the piston rod; 3. The seal guide structure of claim 2, wherein, an elastic connecting element in the shape of a wavy strip connecting the first sealing element and the second sealing element.

4. The seal guide structure of claim 1, wherein, The second sealing element is provided with a plurality of sawtooth-shaped sealing lips on the side connected with the outer wall of the piston rod, and each sealing lip comprises a front lip and a rear lip which are attached to the piston rod.

5. The seal guide structure of claim 1, wherein, The support guide body is provided with a groove, and the part of the fixed end of the sealing mechanism connected with the support guide body is arranged in the groove and abuts against the groove.

6. The seal guide structure of any one of claims 1-5, wherein, An oil storage chamber is formed between the shell and the working cylinder, and an oil delivery pipeline is arranged in the support guide body, the oil delivery pipeline penetrating through the support guide body and connecting the oil storage chamber and the cavity. The sealing guide structure further comprises:

7. The seal guide structure according to any one of claims 1 to 5, wherein a guide ring in the shape of a ring embedded in the support guide body, the inner side of the guide ring connected with the piston rod and the outer side connected with the support guide body.

8. The seal guide structure of any one of claims 1-5, wherein, The support guide body is provided with a buffer element mounting groove on the matching side of the support guide body and the piston rod, and the sealing guide structure further comprises a buffer element arranged in the buffer element mounting groove, the inner side of the buffer element attached to the outer wall of the piston rod. The sealing guide structure further comprises:

9. The seal guide structure of claim 8, wherein, a gasket in the shape of a ring arranged between the pressing plate and the support guide body, the inner side of the gasket attached to the support guide body and the outer side of the gasket provided with a gap relative to the shell. The sealing guide structure further comprises:

10. An oil hydraulic shock absorber characterized by comprising: a static sealing element arranged between the gasket and the support guide body and connected with the gasket, the support guide body and the shell. The sealing guide structure comprises the sealing guide structure according to any one of claims 1-9.

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