Shock absorber sealing tool

Abstract

The utility model discloses a shock absorber sealing tool, belongs to the technical field of shock absorber general assembly, and is mainly used for sealing a port part of an oil storage cylinder of a shock absorber. The shock absorber sealing tool comprises a machine frame, an objective table, a sealing mechanism and a lifting mechanism, and the sealing mechanism comprises an oil seal pressing rod, a sealing idler wheel, a rotating mechanism, an adapter and an installation base. The adapter is rotationally mounted on the oil seal pressing rod and driven by the rotating mechanism, and the central axis of the adapter coincides with the central axis of the shock absorber oil storage cylinder; the mounting seat is coaxially arranged below the adapter, and a transverse mounting groove is formed in the mounting seat; the sealing roller is rotationally arranged in the transverse mounting groove, the central shaft of the sealing roller is perpendicular to the central shaft of the shock absorber oil storage barrel, and the end part of the sealing roller is provided with a sealing surface which faces the oil seal pressing rod and surrounds the top of the shock absorber oil storage barrel in the circumferential direction; the end face of the oil storage cylinder of the shock absorber is stamped into a positive-angle flange, a flat-angle flange or a negative-angle flange by adopting the sealing rollers with sealing surfaces in different shapes, so that different sealing requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of shock absorber assembly technology, and in particular to a shock absorber sealing tool. Background Technology

[0002] In automobile manufacturing, shock absorbers are often installed to accelerate the attenuation of vibrations in the chassis and body, thereby improving the ride comfort of the vehicle. These shock absorbers suppress the oscillations caused by the rebound of the springs after absorbing shocks and the impacts from the road surface. During the manufacturing process, the oil reservoir end of the shock absorber needs to be bent and sealed to form a sealed unit, ensuring the performance of the shock absorber and extending its service life.

[0003] Currently, a three-head rolling sealing fixture is commonly used to seal shock absorbers by spinning. Figures 1-3 As shown, the sealing machine includes a frame 1 and a platform 11 mounted on the frame 1 for placing the shock absorber 2. The frame 1 also has a lifting mechanism 12. The lower end of the lifting mechanism 12 is connected to a sealing mechanism 3 to drive the sealing mechanism 3 downwards. A rotating mechanism is driven by the sealing mechanism 3 to drive the sealing mechanism 3 to rotate, thereby sealing the port of the shock absorber's oil reservoir 21. Specifically, the sealing mechanism 3 includes an oil seal pressure rod 14 connected to the lifting mechanism 12, through which the shock absorber piston rod 22 passes. The centerline of the oil seal pressure rod 14 coincides with the centerline of the shock absorber's oil reservoir 21. A rotating seat 13 is rotatably connected to the end of the oil seal pressure rod 14 near the shock absorber 2. The rotating seat 13 is driven by the rotating mechanism, allowing the rotating seat 13 to rotate around the centerline of the shock absorber 2. Three sealing rollers 3 are circumferentially arranged around the oil seal pressure rod 14 and rotate on the rotating base 13. The sealing rollers 3 are connected to the rotating mechanism for transmission. The rotating mechanism can drive the sealing rollers 3 to rotate around their own center line. The sealing rollers 3 are vertically arranged on the rotating base 13, that is, the center line of the sealing rollers 3 is parallel to the axis of the shock absorber 2. The side of the sealing rollers 3 is provided with a sealing surface 311 for bending the oil reservoir port to seal the oil reservoir port. Under the drive of the rotating mechanism, the three sealing rollers 3 rotate around their own center line as the axis, while the rotating base 13 rotates around the axis of the shock absorber 2 as the axis, so as to drive the three sealing rollers 3 to rotate around the port of the oil reservoir around the axis of the shock absorber 2 as the axis, thereby bending the oil reservoir port along the shape of the flange to achieve the purpose of sealing. With the central axis of the shock absorber oil reservoir 21 as the y-axis and the straight line perpendicular to the central axis of the shock absorber oil reservoir 21 as the x-axis, the sealing roller 3 of the three-head rolling shock absorber sealing fixture exerts a sealing force on the shock absorber oil reservoir 21 in the y-axis direction. At this time, the sealing surface of the sealing roller simultaneously has the functions of guiding and flanging. The three-head rolling shock absorber sealing fixture can stamp the oil reservoir end into a shape similar to the one described above by changing the shape of the sealing surface of the sealing roller. Figure 4The flange shown in Figure a, where the angle α between the end face 211 and the side face 212 of the oil reservoir is obtuse, is a positive angle flange; or as shown in Figure a. Figure 4 The flange shown in Figure b, which forms a right angle α between the end face 211 and the side face 212 of the oil storage tank, is a flat-angle flange.

[0004] A new shock absorber has been developed, whose oil reservoir port has the following shape: Figure 4 The flange shown in Figure c, where the end face 211 of the oil reservoir forms an acute angle α with the side face 212 of the oil reservoir, is a negative angle flange. However, since the sealing roller in the existing three-head rolling shock absorber sealing fixture is vertically mounted on the rotating seat, and its sealing surface 311 is perpendicular to the rotating seat 13 and downwards, even if the sealing surface 311 of the sealing roller 31 is designed to be perpendicular to the side face 212, the sealing surface 311 of the sealing roller 31 is not perpendicular to the side face 212. Figure 4 The oil reservoir end face 211 shown in Figure c has an acute-angle flange shape that matches the side surface 212 of the oil reservoir. That is, the diameter of the sealing surface 311 of the sealing roller 31 gradually decreases along the direction away from the shock absorber, but this still cannot form a shape like the one shown in Figure c. Figure 4 The flanged surface of the oil storage tank end face 211 and the side face 212 of the oil storage tank shown in Figure c is at an acute angle and cannot meet this sealing requirement. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a sealing tool for a shock absorber, which is mainly used for sealing the port of the oil reservoir of the shock absorber, so as to stamp the sealing shape of the port of the oil reservoir of the shock absorber into three forms: positive angle flange, flat angle flange, and negative angle flange.

[0006] This utility model discloses a sealing fixture for a shock absorber, comprising a frame, a platform for fixing the shock absorber, and a sealing mechanism located above the platform. The sealing mechanism includes an oil seal rod, a sealing roller, and a rotating mechanism for driving the sealing roller to rotate around the top of the shock absorber. The upper end of the oil seal rod is connected to a lifting mechanism mounted on the frame. The sealing mechanism also includes an adapter and a mounting base. The adapter is rotatably mounted on the oil seal rod and driven by the rotating mechanism. The central axis of the adapter coincides with the central axis of the shock absorber's oil reservoir. The mounting base has a second through hole at its center for the oil seal rod to pass through. The mounting base is coaxially mounted below the adapter by bolt connection. The mounting base has three transverse mounting grooves evenly distributed with the second through hole as the center. The sealing roller is rotatably mounted in the transverse mounting groove and is driven and connected by a rotating mechanism. The central axis of the sealing roller is perpendicular to the central axis of the shock absorber oil reservoir. The end of the sealing roller has a sealing surface facing the oil seal rod. The sealing surface is wrapped around the top of the shock absorber oil reservoir to seal the shock absorber oil reservoir.

[0007] Furthermore, the sealing roller includes a rotating shaft arranged along the length of the transverse mounting groove. A roller portion is provided at the end of the rotating shaft facing the oil seal pressure rod. The sealing surface is located at the end of the roller portion facing the oil seal pressure rod. A first boss is provided at the end of the roller portion near the rotating shaft. The end of the rotating shaft away from the oil seal pressure rod passes through the transverse mounting groove and is rotatably connected to the mounting base, extending outwards. The end of the rotating shaft away from the oil seal pressure rod is driven and connected to a rotating mechanism. A bearing portion is also sleeved on the rotating shaft. The transverse mounting groove includes a first groove and a second groove connected in sequence. The width of the first groove is smaller than the width of the second groove. The roller portion is rotatably disposed within the first groove, and the bearing portion is disposed within the second groove. A pressure cap for fixing the sealing roller is provided on the mounting base, and the pressure cap covers the transverse mounting groove.

[0008] As a preferred embodiment, one end of the shaft extending out of the transverse mounting groove is threadedly connected to a locking nut for locking the bearing portion and the roller portion.

[0009] As a preferred embodiment, the bearing portion is provided with a dustproof ring fitted onto the connecting section on the side facing the pressure cap.

[0010] As a preferred embodiment, an adjusting shim is also provided between the roller portion and the bearing portion.

[0011] In a preferred embodiment, the bearing section includes a tapered roller bearing, a spun bearing pad, a spun shaft spring, a roller needle bearing, and a deep groove ball bearing, which are sequentially fitted onto the connecting section from the end near the oil seal pressure rod outwards.

[0012] Furthermore, the mounting base is provided with three vertical mounting slots evenly distributed around the second through hole. The vertical mounting slots are located between two adjacent horizontal mounting slots. Each vertical mounting slot is provided with a guide wheel that is vertically downward perpendicular to the mounting base. The lower end of the guide wheel forms a cavity that connects with the outer periphery of the shock absorber.

[0013] The beneficial effects of this utility model are as follows: This shock absorber sealing fixture, through the design of an adapter and a mounting base structure with a transverse mounting groove, places the sealing roller transversely in the circumferential direction of the shock absorber oil reservoir end face, and performs spin sealing on the end face of the shock absorber oil reservoir. This achieves the goal of changing the force direction from y-axis sealing to x-axis sealing without altering the original shock absorber sealing fixture equipment's y-axis force. In other words, there is no need to replace the original shock absorber sealing fixture structure; simply by installing the adapter and mounting base, the sealing force direction of the sealing roller on the shock absorber oil reservoir can be changed to x-axis force. This allows for the use of sealing rollers with different sealing surface shapes to stamp the sealing shape of the shock absorber oil reservoir end face into a positive angle flange, a flat angle flange, or a negative angle flange, meeting different sealing shape requirements. Furthermore, the processing technology of this shock absorber sealing fixture structure is simpler, significantly reducing the cycle time and manufacturing cost of newly purchased equipment. Attached Figure Description

[0014] Figure 1 : A schematic diagram of the existing three-head rolling shock absorber sealing fixture;

[0015] Figure 2 : Schematic diagram of the existing sealing roller installation structure;

[0016] Figure 3 : A schematic diagram of the existing shock absorber sealing fixture; wherein: ① is a schematic diagram of the sealing roller and the shock absorber in the initial state; ② is a schematic diagram of the sealing roller pressing the shock absorber; ③ is a schematic diagram of the shock absorber completing the sealing process;

[0017] Figure 4 : The sealing shape of the end face of the oil reservoir of the shock absorber; where: a is the flange face where the angle α between the end face of the oil reservoir and the side face of the oil reservoir is obtuse, i.e., positive angle flange; b is the flange face where the angle α between the end face of the oil reservoir and the side face of the oil reservoir is right, i.e. flat angle flange; c is the flange face where the angle α between the end face of the oil reservoir and the side face of the oil reservoir is acute, i.e. negative angle flange;

[0018] Figure 5 : Schematic diagram of the sealing roller installation structure used in this utility model;

[0019] Figure 6 : Schematic diagram of the adapter;

[0020] Figure 7 : Figure 6 A bottom view;

[0021] Figure 8 : Figure 7 Sectional view of AA;

[0022] Figure 9 : Structural diagram of the mounting base;

[0023] Figure 10 : Sectional view of the mounting base;

[0024] Figure 11 : Figure 10 BB section view;

[0025] Figure 12 : A sectional view of the sealing mechanism mounted on the mounting base;

[0026] Figure 13 : Figure 12 CC section view;

[0027] Figure 14 : Sealing surface shape of sealing roller; wherein: Ⅰ is the sealing surface shape of sealing roller used for spinning to form a positive angle flange; Ⅱ is the sealing surface shape of sealing roller used for spinning to form a flat angle flange; Ⅲ is the sealing surface shape of sealing roller used for spinning to form a negative angle flange;

[0028] Reference numerals: 1-Frame; 11-Platform; 12-Lifting mechanism; 13-Rotating seat; 131-Oil seal rod mounting hole; 14-Oil seal rod; 2-Shock absorber; 21-Oil reservoir; 211-Oil reservoir end face; 212-Oil reservoir side face; 22-Piston rod; 3-Sealing mechanism; 31-Sealing roller; 311-Sealing surface; 312-Rotating shaft; 313-Roller section; 3131-First boss; 314-Bearing section; 3141-Tap roller bearing; 3142-Spinned bearing pad; 3143-Spinned shaft spring; 3144-Roller roller... 3145 - Deep groove ball bearing; 32 - Adapter; 321 - First through hole; 322 - First bolt hole; 323 - Mounting hole for connection with rotating mechanism; 33 - Mounting seat; 331 - Second through hole; 332 - Second bolt hole; 333 - Horizontal mounting groove; 3331 - First groove; 3332 - Second groove; 334 - Vertical mounting groove; 34 - Guide wheel; 341 - Guide wheel cover; 342 - Guide shaft; 343 - Drive shaft; 35 - Pressure cap; 36 - Tightening nut; 37 - Adjusting shim; 38 - Dustproof pad; 4 - Pressure distribution oil cup. Detailed Implementation

[0029] The present invention will be further described below.

[0030] This utility model provides a sealing fixture for a shock absorber, mainly used for sealing the port of the oil reservoir 21 of a shock absorber. It includes a frame 1, on which a platform 11 for fixing the shock absorber 2 and a sealing mechanism 3 located above the platform 11 are provided. The sealing mechanism 3 includes an oil seal pressure rod 14, a sealing roller 31, and a rotating mechanism for driving the sealing roller 31 to rotate around the top of the shock absorber 2. The upper end of the oil seal pressure rod 14 is connected to a lifting mechanism 12 mounted on the frame 1. The sealing mechanism 3 also includes an adapter 32 and a mounting base 33. The adapter 32 is rotatably mounted on the oil seal pressure rod 14 and driven by the rotating mechanism. The central axis of the adapter 32 is connected to the oil reservoir 21 of the shock absorber. The central axes coincide, and the center of the mounting base 33 is provided with a second through hole 331 for the oil seal pressure rod 14 to pass through. The mounting base 33 is coaxially arranged below the adapter 32 by bolt connection. The mounting base 33 is provided with three transverse mounting grooves 333 evenly arranged with the second through hole 331 as the center. The sealing roller 31 is rotatably arranged in the transverse mounting grooves 333 and is driven and connected by a rotating mechanism. The central axis of the sealing roller 31 is perpendicular to the central axis of the shock absorber oil reservoir 21. The end of the sealing roller 31 is provided with a sealing surface 311 facing the oil seal pressure rod 14. The sealing surface 311 is arranged around the top of the shock absorber oil reservoir 21 to seal the shock absorber oil reservoir 21.

[0031] like Figures 5-13 As shown, the shock absorber sealing fixture includes a frame 1, which serves as the supporting foundation for the entire fixture, ensuring the stable installation and operation of each component. The frame 1 is equipped with a platform 11 for fixing the shock absorber 2 to be sealed, ensuring the stability of the shock absorber 2 during the sealing process. The frame 1 also has a lifting mechanism 12 for driving the sealing mechanism 3 to move up and down to accommodate the sealing requirements of shock absorbers 2 at different heights. The oil seal pressure rod 14 in the sealing mechanism 3 is connected to the lifting mechanism 12, and the centerline of the oil seal pressure rod 14 coincides with the centerline of the shock absorber oil reservoir 21, ensuring coaxiality during the spin sealing process. A rotating mechanism provides rotational power to the sealing roller 31 (not shown in the figure), realizing the spin sealing operation. The sealing roller 31 in the sealing mechanism 3 is arranged around the circumference of the oil seal pressure rod 14 via an adapter 32 and a mounting base 33. Specifically, the structure of the adapter 32 is as follows... Figures 5-8 As shown, the adapter 32 has a first through hole 321 at its center for the oil seal rod 14 to pass through. The diameter of the first through hole 321 is the same as the diameter of the oil seal rod 14, so that the adapter 32 can be rotatably mounted on the oil seal rod 14. The central axis of the adapter 32 coincides with the central axis of the shock absorber oil reservoir 21. The adapter 32 is connected to the rotating structure for transmitting rotational power, so that the adapter 32 can rotate around the oil seal rod 14. The structure of the mounting base 33 is as follows. Figures 9-11As shown, the mounting base 33 is coaxially mounted below the adapter 32 via bolts. The bolts pass sequentially through the first bolt hole 322 on the adapter 32 and the second bolt hole 332 on the mounting base 33, allowing the mounting base 33 and the adapter 32 to rotate synchronously. The center of the mounting base 33 also has a second through hole 331 for the oil seal rod 14 to pass through. The diameter of the second through hole 331 is larger than that of the first through hole 321, ensuring the coaxiality of the mounting base 33 and the adapter 32. This also allows the sealing roller 31 located below the mounting base 33 to enclose the end facing the oil seal rod 14, forming a seal for the end face of the shock absorber oil reservoir 21. The chamber, it should be noted, has a diameter larger than the diameters of the second through hole 331 and the first through hole 321, so that the sealing surface 311 of the sealing roller 31, which is located in the transverse mounting groove 333 of the mounting base 33, can contact the end face of the shock absorber oil reservoir 21, thereby achieving a spin-sealing of the end face of the shock absorber oil reservoir 21. At this time, the axis of the sealing roller 31, which is located on the mounting base 33 through the transverse mounting groove 333, is perpendicular to the central axis of the shock absorber oil reservoir 21. That is, the sealing direction of the sealing roller 31 of the shock absorber sealing fixture to the shock absorber oil reservoir 21 is the x-axis direction. Therefore, the sealing surface 311 of the sealing roller 31 can be designed as follows: Figure 14 The structure shown is designed to achieve a sealing shape that meets various requirements after the sealing roller 31 seals the end face of the shock absorber oil reservoir 21, i.e., by adopting a method such as... Figure 14 The sealing rollers 31 shown have sealing surfaces 311 of different shapes, which can stamp the sealing shape of the end of the shock absorber oil reservoir 21 into a positive angle flange, a flat angle flange, or a negative angle flange. This shock absorber sealing fixture, through the design of an adapter 32 and a mounting base 33 with a transverse mounting groove 333, places the sealing rollers 31 transversely around the end face of the shock absorber oil reservoir 21, and performs a spin-pressing seal. This achieves the change of force direction from y-axis sealing to x-axis sealing without altering the original shock absorber sealing fixture's y-axis force direction. In other words, without replacing the original shock absorber sealing fixture structure, simply by installing the adapter 32 and mounting base 33, the sealing force direction of the sealing rollers 31 on the shock absorber oil reservoir 21 can be changed to x-axis force, allowing for the application of... Figure 14 The sealing rollers 31 shown have sealing surfaces 311 of different shapes. In type I, the diameter of the sealing surface 311 gradually increases along the direction away from the oil seal pressure rod 14; in type II, the diameter of the sealing surface 311 remains constant along the direction away from the oil seal pressure rod 14; and in type III, the diameter of the sealing surface 311 gradually decreases along the direction away from the oil seal pressure rod 14. This achieves the stamping of the sealing shape at the end of the shock absorber oil reservoir 21 into the shape shown. Figure 4The positive angle flange, flat angle flange, or negative angle flange shown can meet different sealing shape requirements; and the processing technology of this type of shock absorber sealing tooling structure is simpler, which greatly reduces the cycle and manufacturing cost of new equipment.

[0032] Furthermore, such as Figure 12 , Figure 13As shown, to facilitate stable rotation of the sealing roller 31 within the transverse mounting groove 333, the sealing roller 31 includes a rotating shaft 312 arranged along the length of the transverse mounting groove 333. A roller portion 313 is provided at the end of the rotating shaft 312 facing the oil seal pressure rod 14. The sealing surface 311 is located at the end of the roller portion 313 facing the oil seal pressure rod 14. A first boss 3131 is provided at the end of the roller portion 313 near the rotating shaft 312. The end of the rotating shaft 312 away from the oil seal pressure rod 14 passes through the transverse mounting groove 333 and is rotatably connected to the mounting base 33, extending outwards. The end of the rotating shaft 312 away from the oil seal pressure rod 14 is driven connected to a rotating mechanism. A bearing portion 314 is also sleeved on the rotating shaft 312. The transverse mounting groove 333 includes a first groove 3331 and a second groove 3332 connected in sequence. The width of the first groove 3331 is smaller than the width of the second groove 3332. The roller part 313 is rotatably disposed in the first groove 3331, and the bearing part 314 is disposed in the second groove 3332. The mounting base 33 is provided with a pressure cover 35 for fixing the sealing roller 31, and the pressure cover 35 covers the transverse mounting groove 333. The sealing roller 31 includes a rotating shaft 312. One end of the rotating shaft 312 passes through the transverse mounting groove 333 and is connected to an external rotating mechanism so that the rotating mechanism can drive the sealing roller 31 to rotate around its own axis. The other end of the rotating shaft 312 is connected to the roller part 313. The end of 313 connected to the rotating shaft 312 is provided with a first boss 3131. By providing the first boss 3131 to cooperate with the pressure cap 35 covering the transverse mounting groove 333, the bearing portion 314 sleeved on the rotating shaft 312 is positioned between the first boss 3131 and the pressure cap 35. The transverse mounting groove 333 includes a first groove 3331 and a second groove 3332 connected in sequence. The width of the first groove 3331 is smaller than the width of the second groove 3332. The first groove 3331 is used to house the roller portion 313, and the second groove 3332 is used to house the bearing portion 314. By designing the width of the first groove 3331 to be smaller than the width of the second groove 3332, the bearing portion 314 is positioned between the first groove 3331 and the second groove 3332. The width of 332 is limited and positioned within the second groove 3332, preventing it from interfering with the roller portion 313 within the first groove 3331. The sealing roller 31 is then installed in the transverse mounting groove via a pressure cap 35 covering the transverse mounting groove 333, ensuring it won't fall off due to gravity after being placed on the mounting base 33. The design advantages and benefits include: the split design of the sealing roller 31 facilitates processing and replacement, reducing maintenance costs; the bearing portion 314 improves the rotational stability and accuracy of the roller portion 313, reducing friction and wear, and extending the tooling's service life; and the direct drive connection between the rotating shaft 312 and the rotating mechanism ensures the synchronous rotation of the sealing roller 31, guaranteeing uniform sealing of the end face of the shock absorber oil reservoir 21.

[0033] To ensure the stability of the connection between the sealing roller 31, the gland 35, and the mounting base 33, such as Figure 12 , Figure 13 As shown, one end of the rotating shaft 312 extending out of the transverse mounting groove 333 is threadedly connected to a locking nut 36 for locking the bearing part 314 and the roller part 313; the other end of the rotating shaft 312 extending out of the transverse mounting groove 333 passes through the pressure cover 35 and is threadedly connected to the locking nut 36. By tightening the locking nut 36, the pressure cover 35 presses the bearing part 314 and the roller part 313 tightly, ensuring a tight connection between the bearing part 314 and the roller part 313, as well as the stability of the sealing roller 31 when it rotates around its own axis driven by the rotating mechanism, preventing a decrease in sealing quality due to vibration or loosening. At the same time, the threaded connection method facilitates adjustment and replacement, improving the reliability and maintainability of the tooling.

[0034] To prevent iron filings from falling into the sealing roller 31 during the sealing process, such as Figure 12 , Figure 13 As shown, the bearing portion 314 is provided with a dustproof pad 38 on the side facing the pressure cover 35 and fitted onto the connecting section. The dustproof pad 38, made of elastic material such as rubber or polyurethane, fits tightly against the surface of the bearing portion 314 to form a dynamic seal, preventing dust, iron filings, and other particulate contaminants from entering the bearing cavity through the gap between the pressure cover 35 and the bearing portion 314. This protects the cleanliness and lubrication performance of the bearing, thereby extending the service life of the bearing and the stability of the tooling.

[0035] like Figure 12 , Figure 13 As shown, an adjusting shim 37 is also provided between the roller portion 313 and the bearing portion 314. The adjusting shim 37 allows for fine adjustment of the gap between the roller portion 313 and the bearing portion 314, ensuring the rotational accuracy and stability of the sealing roller 31. At the same time, the adjusting shim 37 also plays a role in buffering and shock absorption, reducing the impact of vibration on the connection stability between the rotating shaft 312 and the pressure cap 35, thereby affecting the sealing quality.

[0036] like Figure 12 , Figure 13As shown, the bearing section 314 includes a tapered roller bearing 3141, a spun bearing pad 3142, a spun shaft spring 3143, a roller needle bearing 3144, and a deep groove ball bearing 3145, which are sequentially sleeved on the connecting section from the end near the oil seal pressure rod 14 outwards. The tapered roller bearing 3141 can withstand large combined radial and axial loads and is suitable for complex stress conditions that may occur during the sealing process of the shock absorber, ensuring the stability and durability of the sealing roller 31 under stress. The spun bearing pad 3142 and the spun shaft spring 3143 provide additional support and stability, while the spun shaft spring 3143 plays a role in pre-tensioning and buffering. This design not only reduces the risk of bearing damage caused by vibration and impact, but also ensures the smoothness of the sealing roller 31 during high-speed rotation and improves the sealing quality. The needle bearing has a high radial load capacity and a compact structure, making it suitable for space-constrained applications. The use of a roller needle bearing 3144 in the sealing roller 31 effectively reduces the bearing volume while meeting the requirements of high-speed rotation. The deep groove ball bearing 3145 has a simple structure, is easy to maintain, and can withstand certain radial and axial loads. The deep groove ball bearing 3145 at the end of the sealing roller 31 further enhances the overall load-bearing capacity of the bearing section 314, ensuring the stability and reliability of the sealing roller 31 during long-term operation. The multi-layer bearing design improves the load-bearing capacity and rotational accuracy of the bearing section 314, ensuring the stability and reliability of the sealing roller 31 during high-speed rotation. The spinning shaft spring 3143 serves as a preload and buffer, reducing the risk of bearing damage due to vibration and impact. To fix the shock absorber 2 mounted on the platform 11 and prevent it from shifting during the spinning sealing process, such as... Figures 9-12 As shown, the mounting base 33 is also provided with three vertical mounting grooves 334 evenly distributed around the second through hole 331. The vertical mounting grooves 334 are positioned between two adjacent horizontal mounting grooves 333. Each vertical mounting groove 334 contains a guide wheel 34 that is vertically downwards and perpendicular to the mounting base 33. The lower end of the guide wheel 34 forms a cavity that connects with the outer periphery of the shock absorber 2. The guide wheel 34 guides the shock absorber 2 during the rotational sealing process, ensuring that the shock absorber 2 is always centered on the sealing roller 31 during sealing, thereby improving the coaxiality and uniformity of the sealing. Simultaneously, the guide wheel 34 also provides support and positioning, reducing the risk of reduced sealing quality due to the shock absorber 2's misalignment; specifically, as shown... Figure 12 , Figure 13As shown, the guide wheel 34 is mounted in the vertical mounting groove 334 via a guide shaft 342. To ensure that the guide wheel 34 does not shift during use and that external particles do not enter the guide wheel 34 and affect its rotation, a guide wheel cover 341 is also provided on the vertical mounting groove 34 to cover the mounting location of the guide wheel 34.

Claims

1. A shock absorber sealing fixture, comprising a frame (1), wherein the frame (1) is provided with a platform (11) for fixing a shock absorber (2) and a sealing mechanism (3) located above the platform (11), the sealing mechanism (3) comprising an oil seal pressure rod (14), a sealing roller (31) and a rotating mechanism for driving the sealing roller (31) to rotate around the top of the shock absorber (2), wherein the upper end of the oil seal pressure rod (14) is connected to a lifting mechanism (12) provided on the frame (1); characterized in that: The sealing mechanism (3) further includes an adapter (32) and a mounting base (33). The adapter (32) is rotatably mounted on the oil seal pressure rod (14) and is driven by a rotating mechanism. The central axis of the adapter (32) coincides with the central axis of the shock absorber oil reservoir (21). The mounting base (33) has a second through hole (331) at its center for the oil seal pressure rod (14) to pass through. The mounting base (33) is coaxially mounted below the adapter (32) by bolt connection. The mounting base (33) has three openings for... The second through hole (331) is a horizontal mounting groove (333) evenly distributed around the center. The sealing roller (31) is rotatably set in the horizontal mounting groove (333) and driven by a rotating mechanism. The central axis of the sealing roller (31) is perpendicular to the central axis of the shock absorber oil reservoir (21). The end of the sealing roller (31) is provided with a sealing surface (311) facing the oil seal pressure rod (14). The sealing surface (311) is circumferentially arranged around the top of the shock absorber oil reservoir (21) to seal the shock absorber oil reservoir (21).

2. The shock absorber sealing fixture as described in claim 1, characterized in that: The sealing roller (31) includes a rotating shaft (312) arranged along the length of the transverse mounting groove (333). A roller portion (313) is provided at one end of the rotating shaft (312) facing the oil seal pressure rod (14). The sealing surface (311) is located at the end of the roller portion (313) facing the oil seal pressure rod (14). A first boss (3131) is provided at the end of the roller portion (313) near the rotating shaft (312). The end of the rotating shaft (312) away from the oil seal pressure rod (14) passes through the transverse mounting groove (333) and is rotatably connected to the mounting base (33), extending outwards. The end is driven and connected to the rotating mechanism. The rotating shaft (312) is also fitted with a bearing part (314). The transverse mounting groove (333) includes a first groove (3331) and a second groove (3332) connected in sequence. The width of the first groove (3331) is smaller than the width of the second groove (3332). The roller part (313) is rotatably disposed in the first groove (3331). The bearing part (314) is disposed in the second groove (3332). The mounting base (33) is provided with a pressure cover (35) for fixing the sealing roller (31). The pressure cover (35) covers the transverse mounting groove (333).

3. The shock absorber sealing fixture as described in claim 2, characterized in that: The end of the shaft (312) extending out of the transverse mounting groove (333) is threadedly connected to a locking nut (36) for locking the bearing part (314) and the roller part (313).

4. The shock absorber sealing fixture as described in claim 3, characterized in that: The bearing section (314) has a dustproof pad (38) fitted onto the connecting section on the side facing the cover (35).

5. The shock absorber sealing fixture as described in claim 2, characterized in that: An adjusting pad (37) is also provided between the roller part (313) and the bearing part (314).

6. The shock absorber sealing fixture as described in claim 2, characterized in that: The bearing section (314) includes a tapered roller bearing (3141), a spun bearing pad (3142), a spun shaft spring (3143), a roller needle bearing (3144), and a deep groove ball bearing (3145) sequentially mounted on the connecting section from the end near the oil seal pressure rod (14) outwards.

7. The shock absorber sealing fixture as described in claim 1, characterized in that: The mounting base (33) is also provided with three vertical mounting slots (334) evenly arranged with the second through hole (331) as the center. The vertical mounting slots (334) are arranged between two adjacent horizontal mounting slots (333). Each vertical mounting slot (334) is provided with a guide wheel (34) that is vertically downward perpendicular to the mounting base (33). The lower end of the guide wheel (34) forms a cavity that is connected to the outer periphery of the shock absorber (2).

Images