A cylinder overhauling tool

Abstract

The utility model provides a kind of oil cylinder overhauling tool, including first support assembly, is set on base;First support assembly includes the first support roller for supporting the piston rod of oil cylinder;First support roller includes the first support part and second support part being connected with each other;Along the direction of first support part close to second support part, the outer diameter of first support part gradually decreases;Along the direction of second support part close to first support part, the outer diameter of second support part gradually decreases;Second support assembly, is set on base;Second support assembly includes the second support roller for supporting the cylinder body of oil cylinder;Wherein, first support assembly is movably set relative to second support assembly;Clamping assembly, clamping assembly includes for clamping the two end heads of oil cylinder;Two end heads are located respectively on the opposite sides of first support assembly and second support assembly, solve the technical problem that oil cylinder replaces sealing element efficiency is low.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder repair technology, specifically to a hydraulic cylinder repair fixture. Background Technology

[0002] Currently, hydraulic cylinders are widely used actuators in industrial production, and their sealing performance directly affects the working efficiency and lifespan of equipment. After prolonged use, cylinder seals will wear and age, requiring periodic replacement. Existing methods for replacing cylinder seals largely rely on manual operation, typically requiring multiple operators to work together to lift the cylinder and pull out the piston rod. This is not only labor-intensive and inefficient, but also prone to uneven operation and secondary damage to the seals. The lack of dedicated cylinder seal replacement fixtures in factories makes the replacement process time-consuming, labor-intensive, and difficult to guarantee in terms of quality.

[0003] Therefore, existing technologies need further development. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a hydraulic cylinder maintenance tool to solve the technical problem of low efficiency in replacing hydraulic cylinder seals in related technologies.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution: A hydraulic cylinder maintenance fixture is provided, comprising: a base; a first support assembly disposed on the base; the first support assembly including a first support roller for supporting the piston rod of the hydraulic cylinder; the first support roller including a first support portion and a second support portion connected to each other; the outer diameter of the first support portion gradually decreases along the direction from the first support portion to the second support portion; the outer diameter of the second support portion gradually decreases along the direction from the second support portion to the first support portion; a second support assembly disposed on the base; the second support assembly including a second support roller for supporting the cylinder body of the hydraulic cylinder; wherein the first support assembly is movably disposed relative to the second support assembly; and a clamping assembly including two ends for clamping the hydraulic cylinder; the two ends are respectively located on opposite sides of the first support assembly and the second support assembly.

[0006] Furthermore, the hydraulic cylinder maintenance fixture includes: a linear guide rail fixed to the base; a slider slidably disposed on the linear guide rail; a lower movable plate fixedly connected to the slider; a screw lifting platform mounted on the lower movable plate for realizing lifting motion; and the first support roller disposed on the screw lifting platform.

[0007] Furthermore, the lead screw lifting platform includes: a mounting base disposed on the lower movable plate; a lead screw rotatably connected to the mounting base; an upper movable plate connected to the upper end of the lead screw; and a first support roller disposed on the upper movable plate.

[0008] Furthermore, the lead screw lifting platform includes: an operating lever, one end of which is provided with a threaded portion; the mounting base is provided with an external thread that engages with the threaded portion; the lead screw is driven to move by rotating the operating lever.

[0009] Furthermore, the lead screw lifting platform includes: a mounting shell having a mounting groove; a mounting base and a threaded portion both disposed within the mounting groove; an operating rod passing through the mounting shell and rotatably connected to the side wall of the mounting shell; and a handwheel disposed at the end of the operating rod away from the threaded portion.

[0010] Furthermore, there are multiple lead screw lifting platforms; the multiple lead screw lifting platforms are arranged at intervals; there are multiple first support rollers; the multiple first support rollers are arranged in a one-to-one correspondence with the multiple lead screw lifting platforms.

[0011] Furthermore, the hydraulic cylinder maintenance fixture includes: a linear guide rail fixed to the base; a slider slidably disposed on the linear guide rail; the second support assembly includes a fixed frame disposed on the slider; and the second support roller is rotatably connected to the fixed frame.

[0012] Furthermore, the second support roller includes a third support portion and a fourth support portion connected to each other; the outer diameter of the third support portion gradually decreases along the direction of the third support portion toward the fourth support portion; the outer diameter of the fourth support portion gradually decreases along the direction of the fourth support portion toward the third support portion.

[0013] Furthermore, there are multiple second support rollers; the multiple second support rollers are arranged at intervals.

[0014] Further, the end head includes: a mounting plate movably disposed on the base; an end screw rotatably connected to the mounting plate; one end of the end screw is provided with a fixing part for abutting against the oil cylinder; wherein, the axis of the end screw is perpendicular to the axes of the first support roller and the second support roller.

[0015] Beneficial effects: The hydraulic cylinder maintenance fixture of this utility model includes a base; a first support assembly disposed on the base; the first support assembly includes a first support roller for supporting the piston rod of the hydraulic cylinder; the first support roller includes a first support portion and a second support portion connected to each other; the outer diameter of the first support portion gradually decreases along the direction of the first support portion towards the second support portion; the outer diameter of the second support portion gradually decreases along the direction of the second support portion towards the first support portion; a second support assembly disposed on the base; the second support assembly includes a second support roller for supporting the cylinder body of the hydraulic cylinder; wherein the first support assembly is movably disposed relative to the second support assembly; and a clamping assembly including two ends for clamping the hydraulic cylinder; the two ends are respectively located on opposite sides of the first support assembly and the second support assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the hydraulic cylinder maintenance fixture used in this embodiment of the utility model; Figure 2 This is a front view of the hydraulic cylinder maintenance fixture used in this embodiment of the utility model; Figure 3 This is a schematic diagram of the structure of the first support component of the hydraulic cylinder maintenance fixture used in this embodiment of the utility model; Figure 4 This is a schematic diagram of the structure of the first support roller of the hydraulic cylinder maintenance fixture used in this embodiment of the utility model.

[0017] The above figures include the following reference numerals: 1. Base; 2. Linear guide rail; 3. Slider; 4. Lower the movable panel; 5. Screw lifting platform; 6. Install the movable board; 7. First support roller; 8. Mounting bracket; 9. Second support roller; 11. End; 51. Mounting bracket; 52. Lead screw; 53. Control lever; 54. Threaded section; 55. Install the casing; 56. Handwheel; 71. First support section; 72. Second support section; 91. Third support section; 92. Fourth Support Section; 100. Piston rod; 111. Mounting plate; 112. End screw; 113. Fixing part. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0019] See Figures 1 to 4 According to an embodiment of the present invention, a hydraulic cylinder maintenance fixture is provided, comprising: a base 1; a first support assembly disposed on the base 1; the first support assembly including a first support roller 7 for supporting a piston rod 100 of the hydraulic cylinder; the first support roller 7 including a first support portion 71 and a second support portion 72 connected to each other; the outer diameter of the first support portion 71 gradually decreases along the direction of the first support portion 71 approaching the second support portion 72; the outer diameter of the second support portion 72 gradually decreases along the direction of the second support portion 72 approaching the first support portion 71; a second support assembly disposed on the base 1; the second support assembly including a second support roller 9 for supporting the cylinder body of the hydraulic cylinder; wherein the first support assembly is movably disposed relative to the second support assembly; and a clamping assembly including two ends 11 for clamping the hydraulic cylinder; the two ends 11 are respectively located on opposite sides of the first support assembly and the second support assembly.

[0020] With the above configuration, the V-shaped structure design of the first support roller 7 and the second support roller 9 effectively adapts to the cylindrical shape of the cylinder piston rod 100 and the cylinder body, providing self-centering, stable and rolling support, significantly reducing the frictional resistance when moving parts, and facilitating the pulling and reinstallation of the piston rod.

[0021] Reference Figure 1 , Figure 2 In the hydraulic cylinder maintenance fixture of this embodiment, the hydraulic cylinder maintenance fixture includes: a linear guide rail 2, fixed on the base 1; a slider 3, slidably disposed on the linear guide rail 2; a lower movable plate 4, fixedly connected to the slider 3; a screw lifting platform 5, installed on the lower movable plate 4, for realizing lifting motion; and the first support roller 7 disposed on the screw lifting platform 5.

[0022] Specifically, the combination of the linear guide rail 2, slider 3, and lower movable plate 4 enables smooth lateral movement of the first support assembly, facilitating adjustment of the relative distance between the piston rod support position and the cylinder support position, and creating the necessary operating space for disassembling and installing the seals. Combined with the lead screw lifting platform 5, precise adjustment of the height of the first support roller 7 is achieved, ensuring consistent and good contact with the piston rod.

[0023] Reference Figure 3 In the hydraulic cylinder maintenance fixture of this embodiment, the lead screw lifting platform 5 includes: a mounting base 51, which is disposed on the lower movable plate 4; a lead screw 52, ​​which is rotatably connected to the mounting base 51; an upper movable plate 6, which is connected to the upper end of the lead screw 52; and a first support roller 7 disposed on the upper movable plate 6.

[0024] With the above configuration, the lead screw lifting platform 5 drives the upper movable plate 6 to rise and fall via the lead screw 52. It has a stable structure, strong load-bearing capacity, and high adjustment accuracy. It can accurately control the height position of the piston rod 100, which facilitates the replacement of the seal.

[0025] Reference Figure 3 In the hydraulic cylinder maintenance fixture of this embodiment, the lead screw lifting platform 5 includes: an operating lever 53, one end of which is provided with a threaded portion 54; the mounting base 51 is provided with an external thread that meshes with the threaded portion 54 on its periphery; the lead screw 52 is driven to move by rotating the operating lever 53.

[0026] With the above configuration, the mechanism that converts the rotational motion of the operating lever 53 into the linear motion of the lead screw 52 is specifically formed by the threaded engagement of the threaded part 54 with the mounting base 51, and the containment and support function of the mounting shell 55. This constitutes a compact, labor-saving, and self-locking lifting drive unit, ensuring the smoothness of the lifting process and the position holding.

[0027] In the hydraulic cylinder maintenance fixture of this embodiment, the lead screw lifting platform 5 includes: a mounting shell 55, which has a mounting groove; a mounting base 51 and a threaded portion 54 are both disposed within the mounting groove; an operating rod 53 passes through the mounting shell 55 and is rotatably connected to the side wall of the mounting shell 55; a handwheel 56 is provided at the end of the operating rod 53 away from the threaded portion 54. Thus, the handwheel 56 provides a convenient operating point for applying force.

[0028] Reference Figure 1 , Figure 2 In the hydraulic cylinder maintenance fixture of this embodiment, there are multiple lead screw lifting platforms 5; the multiple lead screw lifting platforms 5 are arranged at intervals; there are multiple first support rollers 7; the multiple first support rollers 7 are arranged in a one-to-one correspondence with the multiple lead screw lifting platforms 5.

[0029] Specifically, multiple lead screw lifting platforms 5 and corresponding first support rollers 7 are set up to provide multi-point and uniform support for the long-stroke piston rod, effectively preventing the piston rod from bending and deforming due to its own weight or uneven force, and ensuring the quality of maintenance.

[0030] Reference Figure 1 , Figure 2 In the hydraulic cylinder maintenance fixture of this embodiment, the hydraulic cylinder maintenance fixture includes: a linear guide rail 2, fixed on the base 1; a slider 3, slidably disposed on the linear guide rail 2; the second support assembly includes a fixed frame 8 disposed on the slider 3; and the second support roller 9 is rotatably connected to the fixed frame 8.

[0031] With the above configuration, the second support component adopts a linear guide rail 2 and slider 3 structure similar to the first support component, which allows the second support roller 9 supporting the cylinder body to move flexibly, further enhancing the tooling's adaptability to cylinders of different lengths and the convenience of adjusting the operating space.

[0032] Reference Figure 4 In the hydraulic cylinder maintenance fixture of this embodiment, the second support roller 9 includes a third support portion 91 and a fourth support portion 92 connected to each other; along the direction of the third support portion 91 approaching the fourth support portion 92, the outer diameter of the third support portion 91 gradually decreases; along the direction of the fourth support portion 92 approaching the third support portion 91, the outer diameter of the fourth support portion 92 gradually decreases.

[0033] With the above configuration, the V-shaped structure of the second support roller 9 has a similar beneficial effect to the first support roller 7, providing a stable and rollable V-shaped support for the cylinder body, which facilitates the movement and fine adjustment of the cylinder body.

[0034] In the hydraulic cylinder maintenance fixture of this embodiment, there are multiple second support rollers 9; the multiple second support rollers 9 are arranged at intervals.

[0035] By adopting the above configuration, multiple second support rollers 9 are provided to provide stable multi-point support for long or heavy-duty hydraulic cylinder bodies, distributing the load and improving the overall stability and load-bearing capacity of the tooling.

[0036] In the hydraulic cylinder maintenance fixture of this embodiment, the end head 11 includes: a mounting plate 111, which is movably disposed on the base 1; an end screw 112, which is rotatably connected to the mounting plate 111; one end of the end screw 112 is provided with a fixing part 113 for abutting against the hydraulic cylinder; wherein, the axis of the end screw 112 is perpendicular to the axis of the first support roller 7 and the second support roller 9.

[0037] Reference Figure 1 , Figure 2 The design of the end screw 112 of the end 11 allows for fine-tuning and tightening of both ends of the cylinder, ensuring that the cylinder is firmly clamped during operation and will not move axially; the arrangement of its axis perpendicular to the axis of the support roller makes the clamping force direction reasonable and does not affect the normal function of the support roller.

[0038] Example 1 This utility model embodiment provides a hydraulic cylinder overhaul fixture; please refer to [link / reference]. Figures 1 to 4 It includes a base 1, a first support component, a second support component, and a clamping component.

[0039] The base 1 is made of standard I-beams and has multiple mounting holes on its surface for fixing other components, providing a stable foundation for the entire fixture.

[0040] The first support assembly is mounted on the base 1 and supports the piston rod 100 of the hydraulic cylinder. The first support assembly includes a linear guide rail 2, a slider 3, a lower movable plate 4, a lead screw lifting platform 5, an upper movable plate 6, and a first support roller 7. The linear guide rail 2 is fixed to the base 1 by countersunk screws. The slider 3 is slidably mounted on the linear guide rail 2, enabling lateral movement of the entire first support assembly. The lower movable plate 4 is fixed to the slider 3 by a threaded connection. The lead screw lifting platform 5 is mounted on the lower movable plate 4 and is used to achieve lifting motion. The lead screw lifting platform 5 includes a mounting base 51, a lead screw 52, ​​an operating lever 53, a threaded portion 54, a mounting housing 55, and a handwheel 56. The mounting base 51 is mounted on the lower movable plate 4. The lead screw 52 is rotatably connected to the mounting base 51 via bearings. One end of the operating lever 53 has a threaded portion 54, and the periphery of the mounting base 51 has external threads that mesh with the threaded portion 54. Rotating the handwheel 56 drives the operating lever 53 to rotate, thereby driving the lead screw 52 to move up and down. The mounting housing 55 has a mounting groove to accommodate the mounting base 51 and the threaded portion 54. The operating rod 53 passes through the mounting housing 55 and is rotatably connected to the side wall of the mounting housing 55 via a bearing. The upper end of the lead screw 52 is connected to the upper movable plate 6. The first support roller 7 is mounted on the upper movable plate 6 via a bracket. The first support roller 7 includes a first support portion 71 and a second support portion 72 that are interconnected. Along the direction from the first support portion 71 to the second support portion 72, the outer diameter of the first support portion 71 gradually decreases; along the direction from the second support portion 72 to the first support portion 71, the outer diameter of the second support portion 72 gradually decreases, forming a V-shaped support surface, which facilitates stable support of piston rods 100 of different diameters.

[0041] The second support assembly is mounted on the base 1 and is used to support the cylinder body of the hydraulic cylinder. The second support assembly includes another set of linear guide rails 2, a slider 3, a fixing frame 8, and a second support roller 9. The linear guide rails 2 are fixed to the base 1. The slider 3 is slidably mounted on the linear guide rails 2. The fixing frame 8 is mounted on the slider 3. The second support roller 9 is rotatably connected to the fixing frame 8 via bearings. The second support roller 9 also includes a third support portion 91 and a fourth support portion 92 connected to each other, forming a V-shaped support surface for stabilizing the hydraulic cylinder body.

[0042] The clamping assembly includes two ends 11, located on opposite sides of the first and second support assemblies, respectively, for clamping the hydraulic cylinder from both ends to prevent it from moving during operation. Each end 11 includes a mounting plate 111, an end screw 112, and a fixing part 113. The mounting plate 111 is movably mounted on the base 1. The end screw 112 is threadedly connected to the mounting plate 111, and rotating the end screw 112 drives its axial movement. The fixing part 113 is located at the end of the end screw 112 facing the hydraulic cylinder and is used to abut against the end of the hydraulic cylinder. The axis of the end screw 112 is perpendicular to the axes of the first support roller 7 and the second support roller 9 to ensure the correct direction of the clamping force.

[0043] The working process of this utility model hydraulic cylinder repair fixture is as follows: Install the hydraulic cylinder whose seal needs to be replaced, hoist the hydraulic cylinder to be repaired onto the fixture, so that the cylinder body is placed on the second support roller 9 and the piston rod 100 is placed on the first support roller 7. Initially adjust their relative positions by sliding the first and second support components. When it is necessary to pull out the piston rod 100, then finely adjust the height of the first support roller 7 through the screw lifting platform 5 to maintain optimal contact with the piston rod 100. Simultaneously, the first support component can be slid to assist in pulling out the piston rod 100. The V-shaped support roller design ensures that the piston rod 100 and the hydraulic cylinder body are effectively supported and guided throughout the movement, greatly reducing the difficulty of operation and labor intensity. Replace the seal, fix the mounting plate 111, and simultaneously rotate the screws on both sides of the mounting plate 111 to align the hydraulic cylinder and piston rod before inserting and restoring it.

[0044] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0045] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0046] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0047] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0048] The above description is only a preferred embodiment of this application. 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 application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A hydraulic cylinder maintenance fixture, characterized in that, include: Base (1); A first support assembly is disposed on the base (1); the first support assembly includes a first support roller (7) for supporting the piston rod (100) of the hydraulic cylinder; the first support roller (7) includes a first support portion (71) and a second support portion (72) connected to each other; the outer diameter of the first support portion (71) gradually decreases along the direction of the first support portion (71) towards the second support portion (72); the outer diameter of the second support portion (72) gradually decreases along the direction of the second support portion (72) towards the first support portion (71); A second support assembly is disposed on the base (1); the second support assembly includes a second support roller (9) for supporting the cylinder body; wherein the first support assembly is movably disposed relative to the second support assembly; The clamping assembly includes two ends (11) for clamping the hydraulic cylinder; the two ends (11) are located on opposite sides of the first support assembly and the second support assembly, respectively.

2. The hydraulic cylinder overhaul fixture according to claim 1, characterized in that, The hydraulic cylinder overhaul fixture includes: A linear guide rail (2) is fixed to the base (1); The slider (3) is slidably mounted on the linear guide rail (2); The lower movable plate (4) is fixedly connected to the slider (3); The lead screw lifting platform (5) is installed on the lower movable plate (4) to realize lifting motion; the first support roller (7) is set on the lead screw lifting platform (5).

3. The hydraulic cylinder overhaul fixture according to claim 2, characterized in that, The lead screw lifting platform (5) includes: Mounting base (51) is provided on the lower movable plate (4); The lead screw (52) is rotatably connected to the mounting base (51); The upper movable plate (6) is connected to the upper end of the lead screw (52); the first support roller (7) is disposed on the upper movable plate (6).

4. The hydraulic cylinder overhaul fixture according to claim 3, characterized in that, The lead screw lifting platform (5) includes: An operating lever (53) is provided with a threaded portion (54) at one end; the mounting base (51) is provided with an external thread that engages with the threaded portion (54) on its periphery; the lead screw (52) is driven to move by rotating the operating lever (53).

5. The hydraulic cylinder overhaul fixture according to claim 4, characterized in that, The lead screw lifting platform (5) includes: Mounting housing (55) has a mounting groove inside; mounting base (51) and threaded part (54) are both disposed in the mounting groove; operating rod (53) passes through the mounting housing (55) and is rotatably connected to the side wall of the mounting housing (55); a handwheel (56) is provided at the end of the operating rod (53) away from the threaded part (54).

6. The hydraulic cylinder overhaul fixture according to claim 2, characterized in that, There are multiple lead screw lifting platforms (5); the multiple lead screw lifting platforms (5) are arranged at intervals; there are multiple first support rollers (7); the multiple first support rollers (7) are arranged one-to-one with the multiple lead screw lifting platforms (5).

7. The hydraulic cylinder overhaul fixture according to claim 1, characterized in that, The hydraulic cylinder overhaul fixture includes: A linear guide rail (2) is fixed to the base (1); The slider (3) is slidably mounted on the linear guide rail (2); The second support assembly includes a fixed frame (8) disposed on the slider (3); the second support roller (9) is rotatably connected to the fixed frame (8).

8. The hydraulic cylinder overhaul fixture according to claim 1, characterized in that, The second support roller (9) includes a third support portion (91) and a fourth support portion (92) connected to each other; the outer diameter of the third support portion (91) gradually decreases along the direction of the third support portion (91) towards the fourth support portion (92); the outer diameter of the fourth support portion (92) gradually decreases along the direction of the fourth support portion (92) towards the third support portion (91).

9. The hydraulic cylinder overhaul fixture according to claim 1, characterized in that, There are multiple second support rollers (9); the multiple second support rollers (9) are arranged at intervals.

10. The hydraulic cylinder overhaul fixture according to claim 1, characterized in that, The end (11) includes: Mounting plate (111) is movably mounted on the base (1); The end screw (112) is rotatably connected to the mounting plate (111); one end of the end screw (112) is provided with a fixing part (113) for abutting against the oil cylinder; wherein, the axis of the end screw (112) is perpendicular to the axis of the first support roller (7) and the second support roller (9).

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