Dismounting device for hydraulic cylinder piston

Abstract

The utility model relates to the field of maintenance tools, in particular to a hydraulic cylinder piston dismounting device which comprises a base and two clamping assemblies installed on the base, and the two clamping assemblies are used for clamping and fixing a cylinder body and a piston rod of a hydraulic cylinder. At least one clamping assembly is connected to the base in a sliding mode so as to control the distance between the two clamping assemblies, and a driving assembly used for driving the clamping assemblies to move is arranged on the base. The clamping assembly comprises a mounting seat and an abutting part, an inserting hole is formed in the mounting seat, the hydraulic cylinder can be arranged in the inserting hole in a penetrating mode, one end of the abutting part is rotationally connected to the side wall of the inserting hole, and the end, away from the rotating axis of the abutting part, of the abutting part is defined as an abutting end; the abutting piece can be made to be close to or away from the center line of the jack by rotating the abutting piece. The application has an improved effect.

Description

Technical Field

[0001] This application relates to the technical field of repair tools, and in particular to a disassembly device for a hydraulic cylinder piston. Background Technology

[0002] A hydraulic cylinder is an actuator in a hydraulic transmission system, a device that converts hydraulic energy into mechanical energy. It mainly consists of a cylinder barrel and a piston that slides within the cylinder barrel. The linear sliding motion is driven by filling the cylinder barrel with hydraulic oil.

[0003] Hydraulic cylinders operate frequently in hydraulic systems, and their failure rate is among the highest in hydraulic systems. During the maintenance and disassembly of a hydraulic cylinder, the piston needs to be pulled out of the cylinder barrel. Due to the negative pressure inside the cylinder barrel and the friction between the piston and the cylinder barrel, piston disassembly is quite difficult and generally requires auxiliary disassembly tools. For example, patent document CN214490410U discloses a device for disassembling the piston of a heavy-duty hydraulic cylinder. It mainly includes a base and a cylinder body fixing clip. The cylinder body fixing clip is fixed to the base to secure the hydraulic cylinder. The base also has a screw, and a movable clip is provided at the end of the screw. The movable clip fixes the end of the piston rod. By rotating the screw, the piston is moved, thus achieving piston disassembly.

[0004] In related technologies, the cylinder body fixing buckle is a clamp formed by two semicircles joining together, which can only fix cylinder bodies of the same specification and model. Therefore, the disassembly device in related technologies has poor versatility and is difficult to adapt to the disassembly of hydraulic cylinders of different specifications. Utility Model Content

[0005] To improve the versatility of hydraulic cylinder disassembly devices and facilitate the disassembly of hydraulic cylinders of different specifications, this application provides a hydraulic cylinder piston disassembly device.

[0006] The hydraulic cylinder piston disassembly device provided in this application adopts the following technical solution:

[0007] A disassembly device for a hydraulic cylinder piston includes a base and clamping assemblies mounted on the base. The clamping assemblies are configured in two sets, each set used to clamp and fix the cylinder body and piston rod of the hydraulic cylinder. At least one set of the clamping assemblies is slidably connected to the base to control the distance between the two sets of clamping assemblies. The base is provided with a drive assembly for moving the clamping assemblies. Each clamping assembly includes a mounting base and an abutment. The mounting base has an insertion hole through which the hydraulic cylinder can pass. One end of the abutment is rotatably connected to the side wall of the insertion hole. The end of the abutment furthest from its own axis of rotation is defined as the abutment end. Rotating the abutment allows it to move closer to or further away from the centerline of the insertion hole.

[0008] By adopting the above technical solution, when the hydraulic cylinder is fixed, the abutting end presses against the side wall of the cylinder barrel or piston rod, using friction to fix the cylinder barrel or piston rod. Subsequently, the hydraulic cylinder piston can be disassembled by adjusting the distance between the two sets of clamping components using the drive assembly. Simultaneously, since rotating the abutting member can adjust the distance between the abutting end and the axis of the insertion hole, hydraulic cylinders of different specifications can be fixed, thus facilitating the disassembly of hydraulic cylinders of different specifications by operators and improving the versatility of the disassembly device.

[0009] Optionally, the clamping assembly further includes a drive post located near the abutting end and abutting with the abutting member. The drive post is capable of moving circumferentially along the insertion hole, and the movement of the drive post can drive the abutting member to rotate, so that the abutting end is close to the center line of the insertion hole.

[0010] By adopting the above technical solution, the position of the abutment is adjusted by driving the abutment to move through the drive column.

[0011] Optionally, the clamping assembly further includes an elastic element mounted on the mounting base, which is used to maintain the abutting end of the abutting member in a direction away from the center line of the socket.

[0012] By adopting the above technical solution, the elastic element allows the front abutment of the fixed hydraulic cylinder to be kept away from the center line of the insertion hole, making it easier for the hydraulic cylinder to be inserted into the insertion hole.

[0013] Optionally, multiple abutment members are evenly spaced along the circumference of the insertion hole, and multiple drive posts and elastic members are provided corresponding to the abutment members.

[0014] By adopting the above technical solution, the arrangement of multiple abutment parts enables the hydraulic cylinder to be fixed from different positions, thereby improving the stability of the hydraulic cylinder after it is fixed.

[0015] Optionally, the clamping assembly further includes a linkage ring, which is rotatably connected to the mounting base. The plurality of drive columns are fixedly connected to the linkage ring, and the rotation of the linkage ring can drive the drive columns to move.

[0016] By adopting the above technical solution, multiple drive columns are connected by a linkage ring, which facilitates the synchronous adjustment of the positions of multiple drive columns.

[0017] Optionally, the mounting base is further provided with a locking assembly, which includes a worm gear sleeved on the linkage ring and a worm rotatably connected to the mounting base and meshing with the worm gear.

[0018] By adopting the above technical solution, the rotation of the worm gear drives the rotation of the worm wheel, thereby adjusting the position of the linkage ring. At the same time, the self-locking property between the worm wheel and the worm gear improves the stability of the abutment part in fixing the hydraulic cylinder.

[0019] Optionally, the drive assembly includes a drive rod and a drive component. The drive rod is rotatably connected to the base and threadedly connected to the mounting seat. The drive component is used to drive the drive rod to rotate, and the rotation of the drive rod can drive the mounting seat to slide.

[0020] By adopting the above technical solution, the mounting base can be slid automatically by driving the drive rod to move the mounting base. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0022] Figure 2 This is a schematic diagram of the clamping component structure according to an embodiment of this application.

[0023] Figure 3 This is an embodiment of the present application. Figure 2 Enlarged view of part A in the middle.

[0024] Reference numerals: 1. Base; 2. Clamping assembly; 21. Abutment; 22. Mounting base; 23. Insertion hole; 24. Abutment end; 25. Drive column; 26. Elastic element; 27. Linkage ring; 3. Drive assembly; 31. Drive rod; 32. Drive component; 4. Locking assembly; 41. Worm gear; 42. Worm; 43. Handwheel. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0026] This application discloses a device for disassembling a hydraulic cylinder piston.

[0027] Reference Figure 1 and Figure 2 A hydraulic cylinder piston disassembly device includes a base 1 and two sets of clamping assemblies 2, which are spaced apart on the base 1 in a direction parallel to the base 1. The two sets of clamping assemblies 2 are used to clamp and fix the hydraulic cylinder body and the hydraulic cylinder piston rod, respectively. At least one set of clamping assemblies 2 is capable of sliding in a direction parallel to the base 1. A drive assembly 3 is provided on the base 1 for driving the clamping assemblies 2 to slide.

[0028] Reference Figure 2 and Figure 3The clamping assembly 2 includes a mounting base 22 and an abutment member 21. The mounting base 22 has a horizontally penetrating insertion hole 23 on its side. One end of the abutment member 21 is rotatably connected to the side wall of the insertion hole 23. The end of the abutment member 21 furthest from its own axis of rotation is defined as the abutment end 24. Rotating the abutment member 21 allows the abutment end 24 to move closer to or further away from the center line of the insertion hole 23 (in this embodiment, the insertion hole 23 is a circular hole, and the center line is also the axis of the insertion hole 23). When fixing the hydraulic cylinder, the hydraulic cylinder is inserted into the insertion hole 23. By rotating the abutment member 21, the abutment end 24 of the abutment member 21 is brought closer to the axis of the insertion hole 23 and pressed against the hydraulic cylinder, thus fixing the hydraulic cylinder. Simultaneously, by rotating the angle of the abutment member 21, hydraulic cylinders of different specifications can be fixed, facilitating the disassembly of hydraulic cylinders of different specifications.

[0029] Reference Figure 2 and Figure 3 The end of the abutment 21 away from its own axis of rotation is bent in the circumferential direction of the insertion hole 23 toward the axis of the insertion hole 23, so that the abutment 21 can better abut against the hydraulic cylinder.

[0030] Reference Figure 2 and Figure 3 The clamping assembly 2 also includes a drive column 25, which is cylindrical in shape and is located on the side of the abutment member 21 near the abutment end 24 along the rotation axis. The drive column 25 can move along the axis of the insertion hole 23, and its side wall abuts against the side wall of the abutment member 21. The movement of the drive column 25 toward the rotation axis of the abutment member 21 can drive the abutment end 24 to move closer to the axis of the insertion hole 23, thereby enabling the abutment member 21 to press against the hydraulic cylinder.

[0031] Reference Figure 2 and Figure 3 To improve the stability of fixing the hydraulic cylinder, multiple abutment members 21 can be evenly spaced along the circumference of the insertion hole 23. In this embodiment, four abutment members 21 are set, and four abutment members 21 are set for the drive column 25.

[0032] Reference Figure 2 and Figure 3 The clamping assembly 2 also includes an elastic element 26, which is used to maintain the abutment 21 in a direction that drives the abutment end 24 away from the axis of the insertion hole 23. This allows the abutment 21 to return to its original position after the drive column 25 moves away from the rotation axis of the abutment 21, facilitating the removal of the hydraulic cylinder from the insertion hole 23 and allowing the operator to insert the hydraulic cylinder into the insertion hole 23. In this embodiment, the elastic element 26 is a spring sheet made of elastic metal, with one end fixed to the mounting base 22 and the other end fixed to the abutment 21.

[0033] Reference Figure 2 and Figure 3The clamping assembly 2 also includes a linkage ring 27, which is rotatably mounted on the mounting base 22 and coaxially arranged with the insertion hole 23. Multiple drive posts 25 are fixedly connected to the linkage ring 27. Rotating the linkage ring 27 can drive the multiple drive posts 25 to move synchronously, which facilitates the synchronous movement of multiple abutment parts 21.

[0034] Reference Figure 2 and Figure 3 The mounting base 22 is also equipped with a locking assembly 4, which includes a worm gear 41 and a worm 42. The worm gear 41 is sleeved on the outside of the linkage ring 27 and is fixedly connected to the linkage ring 27. The worm 42 is rotatably connected to the mounting base 22 and meshes with the worm gear 41. By rotating the worm 42, the worm gear 41 can be driven to rotate, which in turn drives the linkage ring 27 to rotate, thereby adjusting the position of the linkage ring 27. At the same time, the self-locking property between the worm gear 41 and the worm 42 ensures that the abutment 21 can stably abut against the hydraulic cylinder. To facilitate the operator's rotation of the worm 42, a handwheel 43 is provided at the end of the worm 42.

[0035] Reference Figure 1 and Figure 2 In this embodiment, both sets of clamping components 2 are slidably connected to the base 1. The driving component 3 includes a driving rod 31 and a driving element 32. The driving rod 31 is arranged along the sliding direction of the mounting base 22 and is rotatably connected to the driving rod 32. The driving rod 31 has threads with opposite directions of rotation corresponding to the positions of the two mounting bases 22. Rotating the driving rod 31 can drive the two mounting bases 22 to move closer or further apart synchronously. The driving element 32 is used to drive the driving rod 31 to rotate. In this embodiment, the driving element 32 is a servo motor. The housing of the servo motor is fixedly connected to the base 1, and the output shaft of the servo motor is coaxially fixedly connected to the driving rod 31 to drive the rotation of the driving rod 31.

[0036] The implementation principle of the hydraulic cylinder piston disassembly device in this application embodiment is as follows: rotating the abutment member 21 can make the abutment end 24 approach or move away from the axis of the insertion hole 23, thereby achieving the abutment of hydraulic cylinders of different specifications, which facilitates the disassembly of hydraulic cylinders of different specifications by the staff and improves the versatility of the disassembly device.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A disassembly device for a hydraulic cylinder piston, comprising a base (1) and a clamping assembly (2) mounted on the base (1), characterized in that: The clamping assembly (2) is configured in two sets. The two sets of clamping assemblies (2) are used to clamp and fix the cylinder body and piston rod of the hydraulic cylinder. At least one set of clamping assemblies (2) is slidably connected to the base (1) to control the distance between the two sets of clamping assemblies (2). The base (1) is provided with a drive assembly (3) for driving the clamping assembly (2) to move. The clamping assembly (2) includes a mounting base (22) and an abutment (21). The mounting base (22) is provided with an insertion hole (23) in which the hydraulic cylinder can pass through the insertion hole (23). One end of the abutment (21) is rotatably connected to the side wall of the insertion hole (23). The end of the abutment (21) away from its own rotation axis is defined as the abutment end (24). Rotating the abutment (21) can make the abutment (21) approach or move away from the center line of the insertion hole (23).

2. The hydraulic cylinder piston disassembly device according to claim 1, characterized in that: The clamping assembly (2) further includes a drive post (25), which is located near the abutting end (24) and abuts against the abutting member (21). The drive post (25) can move circumferentially along the insertion hole (23). The movement of the drive post (25) can drive the abutting member (21) to rotate, so that the abutting end (24) is close to the center line of the insertion hole (23).

3. The hydraulic cylinder piston disassembly device according to claim 2, characterized in that: The clamping assembly (2) further includes an elastic element (26) mounted on the mounting base (22) for maintaining the abutting end (24) of the abutting member (21) in a direction away from the center line of the socket (23).

4. The hydraulic cylinder piston disassembly device according to claim 3, characterized in that: Multiple abutment members (21) are evenly spaced along the circumference of the insertion hole (23), and multiple drive posts (25) and elastic members (26) are provided corresponding to the abutment members (21).

5. The disassembly device for a hydraulic cylinder piston according to claim 4, characterized in that: The clamping assembly (2) also includes a linkage ring (27), which is rotatably connected to the mounting base (22). The plurality of drive columns (25) are fixedly connected to the linkage ring (27). The rotation of the linkage ring (27) can drive the drive columns (25) to move.

6. The disassembly device for a hydraulic cylinder piston according to claim 5, characterized in that: The mounting base (22) is also provided with a locking assembly (4), which includes a worm gear (41) sleeved on the linkage ring (27) and a worm (42) rotatably connected to the mounting base (22) and meshing with the worm gear (41).

7. The disassembly device for a hydraulic cylinder piston according to claim 1, characterized in that: The drive assembly (3) includes a drive rod (31) and a drive member (32). The drive rod (31) is rotatably connected to the base (1) and threadedly connected to the mounting seat (22). The drive member (32) is used to drive the drive rod (31) to rotate. The rotation of the drive rod (31) can drive the mounting seat (22) to slide.

Images