Floating guider assembly structure

Abstract

The utility model provides a floating guider assembly structure, which belongs to the field of telescopic shock absorber equipment and comprises a guide seat, the guide seat is of an annular structure, the outer surface of the guide seat is propped against the inner surface of a working cylinder, the inner surface of the guide seat is provided with a storage cavity, the storage cavity is of an annular structure, and the storage cavity and the guide seat are concentrically arranged; a sealing seat is placed in the storage cavity and is of an annular structure, the two ends of the sealing seat comprise an end face A and an end face B, the end face A and the end face B abut against the end face of the storage cavity, the sealing seat shakes in the storage cavity in a surrounding mode, the axis of the sealing seat is parallel to the axis of the storage cavity when the sealing seat shakes, and a piston rod is connected to the inner surface of the sealing seat; the inner diameter of the guide seat is larger than that of the sealing seat, the inner diameter of the guide seat is prevented from abutting against the outer surface of the piston rod, the sealing seat capable of shaking is placed in the guide seat, the working cylinder or the piston rod is installed firstly, and when the positions of the working cylinder and the piston rod are not coaxial, a component installed later shifts along with the working cylinder or the piston rod.

Description

Technical Field

[0001] This utility model relates to the field of cylindrical shock absorber equipment, specifically to a floating guide assembly structure. Background Technology

[0002] In the field of cylindrical vibration dampers, the existing guide assembly mainly consists of a guide and a bushing. Its core function is to ensure the coaxiality of the internal components of the vibration damper through high-precision structural design, thereby ensuring the stable and reliable operation of the vibration damper.

[0003] However, existing guides have certain defects. Both ends of the existing shock absorber are connected by bolts. If there is a coaxiality deviation at the mounting points (such as the bolted connection points) (e.g., bolt hole misalignment, assembly errors caused by gaps after installation), the guide assembly will directly fail to self-adjust. When the coaxiality at the mounting points of the shock absorber is poor, this high-precision, fixed-structure guide assembly cannot function properly. This is because the existing guide assembly's guide and bushing are fixedly connected, lacking the ability to self-adjust for installation coaxiality deviations. This means that during actual installation, if there is a coaxiality error at the mounting positions, the guide assembly will be difficult to install smoothly. Even if it is installed successfully, the coaxiality deviation will increase friction and uneven stress between components. With long-term use, this will not only reduce the shock absorber's damping effect, increase vibration and noise, but may also accelerate component wear, shorten the shock absorber's lifespan, and in severe cases, even affect the normal operation of the entire equipment. The existing guide assembly cannot adapt to poor coaxiality at both ends of the installation, which greatly limits its application scenarios and shows obvious shortcomings when facing complex installation environments. Utility Model Content

[0004] In view of this, the present invention provides a floating guide assembly structure, which can be divided into a guide seat and a sealing seat separately. The sealing seat is swayed and set inside the guide seat. The working cylinder or piston rod is installed first. When the working cylinder and piston rod are not aligned, the subsequently installed parts will shift accordingly, that is, the guide seat or sealing seat will shift. After the guide seat or sealing seat shifts, the working cylinder and piston rod will be aligned, thus avoiding increased friction and uneven force between parts caused by coaxiality deviation.

[0005] To solve the above-mentioned technical problems, this utility model provides a floating guide assembly structure, including a guide seat, which is annular in structure. The guide seat slides inside the working cylinder, and the outer surface of the guide seat abuts against the inner surface of the working cylinder. The guide seat can guide the movement direction of the working cylinder, so that the working cylinder can move vertically up and down. The inner surface of the guide seat has a storage cavity, which is annular in structure and concentrically arranged with the guide seat. A sealing seat is placed inside the storage cavity.

[0006] The sealing seat has a ring structure, with a piston rod connected to its inner surface. The other end of the piston rod is fixed to the bottom of the outer cylinder. The sealing seat has two ends, A and B, which abut against the end face of the storage cavity. This creates a preliminary seal between the guide seat and the sealing seat, preventing oil or gas from escaping through the storage cavity. The sealing seat moves within the storage cavity, and its axis is parallel to the axis of the storage cavity during this movement. During installation, the working cylinder or piston rod is installed first. When the working cylinder and piston rod are not aligned, the subsequently installed components shift, i.e., the guide seat or sealing seat shifts. The system automatically adjusts the coaxiality between the guide seat and piston rod, ensuring that the working cylinder and piston rod are coaxial during movement. This prevents friction between the guide seat and the working cylinder due to different coaxialities. Furthermore, the inner diameter of the guide seat is larger than that of the sealing seat, preventing contact between the inner diameter of the guide seat and the outer surface of the piston rod.

[0007] The end of the sealing seat has a sealing ring, which is located near the working cylinder. The outer surface of the sealing ring abuts against the outer surface of the storage cavity. The inner diameter of the sealing ring is smaller than the inner diameter of the guide seat to prevent the sealing ring from blocking the movement path of the guide seat when the working cylinder shifts and causes the guide seat to shift.

[0008] The A and B end faces have annular grooves, and sealing rings are placed in the annular grooves, which abut against the two sides of the annular grooves. The end of the sealing ring abuts against the end face of the sealing ring, and the bottom of the sealing ring abuts against the bottom of the annular groove. The sealing rings are used to enhance the sealing effect and prevent oil or gas from escaping from the A and B end faces, which would cause insufficient pressure in the working cylinder.

[0009] The further developed sealing ring features a cross-shaped structure. This structure increases the contact points between the sealing ring and the annular groove, as well as the A and B end faces, thereby increasing the tortuosity of the oil or gas escape path. The sealing ring is made of rubber, allowing for better deformation so that the end of the sealing ring contacts the end face of the sealing ring, and the bottom of the sealing ring contacts the bottom of the annular groove. Under compression or tension, it can undergo significant deformation and quickly return to its original shape after the external force is removed, ensuring a tight seal between the sealing interfaces and effectively preventing fluid (gas, liquid) leakage.

[0010] The inner surface of the sealing seat has an oil seal, and the inner surface of the sealing seat has an installation cavity. The installation cavity is located on the side close to the working cylinder. The oil seal is located in the sealing cavity and has a ring structure. The oil seal and the sealing seat are concentrically arranged. The inner surface of the oil seal abuts against the outer surface of the piston rod, and the outer surface of the oil seal abuts against the inner side wall of the installation cavity. The oil seal is used to prevent oil from leaking from the end of the piston rod and to prevent external dust, sand, metal shavings, moisture and other contaminants from entering the equipment.

[0011] A further type of oil seal is the Y-shaped sealing ring. The two lips of the Y-shaped sealing cavity face opposite directions (typically one lip seals the internal medium, while the other blocks external impurities), simultaneously preventing fluid leakage to both sides (e.g., preventing oil leakage from the cylinder exterior or internal cavities in a hydraulic system). During reciprocating motion, the lips deform with the shaft's direction of movement, always maintaining a tight seal against the contact surface, reducing the risk of leakage due to gaps. The oil seal is made of polyurethane, possessing comprehensive properties such as high strength, high elasticity, wear resistance, oil resistance, and chemical corrosion resistance.

[0012] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0013] 1. Adaptive coaxiality deviation: The sealing seat can swing within the storage cavity of the guide seat, and its axis remains parallel to the axis of the storage cavity during the swing, so that the working cylinder and the piston cylinder always keep the same straight line, avoiding increased friction and uneven force between components due to poor coaxiality.

[0014] 2. Multiple sealing designs enhance sealing performance: end face contact, sealing ring, cross rubber sealing ring, Y-type polyurethane oil seal prevent leakage, block impurities, and improve sealing performance.

[0015] 3. Ensure stable operation and service life of shock absorbers: Reduce component wear caused by coaxiality deviation, reduce vibration and noise, improve the vibration reduction effect of shock absorbers, and extend the service life of shock absorbers and related equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of a floating guide assembly according to the present invention;

[0017] Figure 2 This is a cross-sectional view of the annular groove of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Guide seat; 2. Storage cavity; 3. Sealing seat; 4. A end face; 5. B end face; 6. Sealing ring; 7. Ring groove; 8. Sealing ring; 9. Oil seal. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1 , 2 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0020] like Figure 1 ,2 As shown:

[0021] This embodiment provides a floating guide assembly structure, including a guide seat 1. The guide seat 1 has an annular structure, and its outer surface abuts against the inner surface of the working cylinder. The guide seat 1 is slidably assembled inside the working cylinder. Through this structural design, the guide seat 1 can guide the movement direction of the working cylinder, ensuring that the working cylinder can move vertically up and down. The inner surface of the guide seat 1 has an annular cavity 2 concentric with itself, and the sealing seat 3 is placed in the cavity 2, providing an installation basis for the subsequent cooperation and functional realization of the sealing seat 3 and the guide seat 1.

[0022] like Figure 2 As shown: The sealing seat 3 is also an annular structure. One end of the sealing seat 3 is connected to the piston rod through its inner surface, and the other end of the piston rod is fixed to the bottom of the piston cylinder, forming a stable connection between the sealing seat 3 and the piston cylinder. The two ends of the sealing seat 3 are end face A and end face B, which abut against the end face of the storage cavity 2, thus forming a preliminary seal between the guide seat 1 and the sealing seat 3, effectively preventing oil or gas from escaping through the storage cavity 2. At the same time, the sealing seat 3 has a certain amount of space to move within the storage cavity 2, and the axis of the sealing seat 3 remains parallel to the axis of the storage cavity 2 when it moves. During installation, one end of the working cylinder or one end of the piston rod is installed first. After fixing one end of the working cylinder or one end of the piston rod, if the working cylinder and the piston rod are not aligned, the subsequently installed component will shift accordingly, that is, the guide seat 1 or the sealing seat 3 will shift. The coaxiality between the guide seat 1 and the piston rod will be automatically adjusted. After the guide seat 1 or the sealing seat 3 shifts, the working cylinder and the piston rod will be aligned, ensuring that the working cylinder and the piston rod remain on the same straight line during installation. This design avoids friction between the guide seat 1 and the inside of the working cylinder due to different coaxiality. Furthermore, the inner diameter of the guide seat 1 is larger than the inner diameter of the sealing seat 3, which prevents the inner diameter of the guide seat 1 from directly contacting the outer surface of the piston rod, further reducing friction and wear.

[0023] like Figure 2 As shown: The end of the sealing seat 3 is provided with a sealing ring 6. The sealing ring 6 is located on the side close to the working cylinder. The outer surface of the sealing ring 6 abuts against the outer surface of the storage cavity 2. The inner diameter of the sealing ring 6 is smaller than the inner diameter of the guide seat 1. This design ensures that when the working cylinder shifts and drives the guide seat 1 to shift, the sealing ring 6 will not obstruct the movement path of the guide seat 1, thus ensuring the sealing effect without affecting the normal movement of the guide seat 1.

[0024] like Figure 2As shown: Both end faces A and B of the sealing seat 3 are provided with annular grooves 7. A sealing ring 8 is placed within the annular groove 7, abutting against both sides of the groove. The end of the sealing ring 8 abuts against the end face of the sealing ring 6, and its bottom abuts against the bottom of the annular groove 7. The main function of the sealing ring 8 is to enhance the sealing effect, preventing oil or gas from escaping from the end faces A and B, and avoiding insufficient pressure inside the working cylinder due to leakage. Furthermore, the sealing ring 8 has a cross-shaped structure. This structure increases the contact points between the sealing ring 8 and the annular groove 7, and between the end faces A and B, while also increasing the tortuosity of the oil or gas escape path, thereby further improving the sealing performance. In addition, the sealing ring 8 is made of rubber, which has good elasticity and can undergo significant deformation when compressed or stretched. After the external force is removed, it can quickly return to its original shape, ensuring a tight seal at the sealing interface and effectively preventing fluid (gas, liquid) leakage.

[0025] like Figure 2 As shown: The inner surface of the sealing seat 3 has a mounting cavity located near the working cylinder, and the oil seal 9 is installed inside the mounting cavity. The oil seal 9 has a ring-shaped structure and is concentrically arranged with the sealing seat 3. The inner surface of the oil seal 9 abuts against the outer surface of the piston rod, and the outer surface abuts against the inner wall of the mounting cavity. The main function of the oil seal 9 is to prevent oil leakage from the piston rod end, while preventing external contaminants such as dust, sand, metal shavings, and moisture from entering the equipment, thus playing a dual role of sealing and protection. Furthermore, the oil seal 9 is a Y-type sealing ring, with its two lips facing different directions. Typically, one lip is used to seal the internal medium, and the other lip is used to block external impurities, which can simultaneously prevent fluid leakage to both sides. For example, in a hydraulic system, it can prevent oil leakage to the outside or inside of the cylinder. During reciprocating motion, the lip can deform with the direction of shaft movement, always tightly fitting the contact surface, reducing the risk of leakage due to gaps. Furthermore, the oil seal 9 is made of polyurethane material, which has comprehensive properties such as high strength, high elasticity, wear resistance, oil resistance, and chemical corrosion resistance. It can adapt to complex working environments and ensure long-term stable sealing performance.

[0026] Working Principle: The guide seat 1 guides the movement of the working cylinder through its cooperation with the working cylinder. The sealing seat 3 is installed in the storage cavity 2 of the guide seat 1. A preliminary seal is formed by the contact between the A and B end faces and the end face of the storage cavity 2. Simultaneously, the sealing performance is further enhanced by components such as the sealing ring 6, sealing ring 8, and oil seal 9. When the working cylinder deviates, the guide seat 1 deviates accordingly. The sealing seat 3 adjusts its coaxiality by shaking within the storage cavity 2, ensuring the coaxiality of the working cylinder and the piston cylinder, reducing friction and leakage risks. Through ingenious structural design and functional coordination, the various components work together to ensure the normal operation of the equipment, achieving effective sealing of the fluid and reliable guidance and protection of moving parts.

[0027] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A floating guide assembly structure, characterized in that: include: Guide seat (1), the guide seat (1) has an annular structure, the outer surface of the guide seat (1) abuts against the inner surface of the working cylinder, the guide seat (1) slides in the working cylinder, the inner surface of the guide seat (1) has a storage cavity (2), the storage cavity (2) has an annular structure, and the storage cavity (2) is concentrically arranged with the guide seat (1); A sealing seat (3) is placed inside the storage cavity (2). The sealing seat (3) has an annular structure. The two ends of the sealing seat (3) include an A end face (4) and a B end face (5). The A end face (4) and the B end face (5) abut against the end face of the storage cavity (2). The sealing seat (3) swings around inside the storage cavity (2). When the sealing seat (3) swings, the axis of the sealing seat (3) is parallel to the axis of the storage cavity (2). A piston rod is connected to the inner surface of the sealing seat (3). The inner diameter of the guide seat (1) is larger than the inner diameter of the sealing seat (3) to avoid the inner diameter of the guide seat (1) from contacting the outer surface of the piston rod.

2. The floating guide assembly structure as described in claim 1, characterized in that: The sealing seat (3) has a sealing ring (6) at its end, which is used to prevent oil from overflowing from the storage cavity (2).

3. The floating guide assembly structure as described in claim 2, characterized in that: The sealing ring (6) is located on the side close to the working cylinder. The outer surface of the sealing ring (6) abuts against the outer surface of the storage cavity (2). The inner diameter of the sealing ring (6) is smaller than the inner diameter of the guide seat (1).

4. The floating guide assembly structure as described in claim 3, characterized in that: The A end face (4) and the B end face (5) have an annular groove (7). A sealing ring (8) is placed in the annular groove (7) and abuts against both sides of the annular groove (7). The end of the sealing ring (8) abuts against the end face of the sealing ring (6), and the bottom of the sealing ring (8) abuts against the bottom of the annular groove (7).

5. The floating guide assembly structure as described in claim 4, characterized in that: The sealing ring (8) has a cross structure.

6. The floating guide assembly structure as described in claim 5, characterized in that: The sealing ring (8) is made of rubber.

7. The floating guide assembly structure as described in claim 1, characterized in that: The inner surface of the sealing seat (3) has an oil seal (9) for preventing oil leakage from the piston rod end.

8. The floating guide assembly structure as described in claim 7, characterized in that: The inner surface of the sealing seat (3) has an installation cavity, which is located near the working cylinder. The oil seal (9) is located in the installation cavity. The oil seal (9) has an annular structure and is concentrically arranged with the sealing seat (3). The inner surface of the oil seal (9) abuts against the outer surface of the piston rod, and the outer surface of the oil seal (9) abuts against the inner sidewall of the installation cavity.

9. The floating guide assembly structure as described in claim 8, characterized in that: The oil seal (9) is a Y-type sealing ring.

10. The floating guide assembly structure as described in claim 9, characterized in that: The oil seal (9) is made of polyurethane.

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