Gear dismounting tool

Abstract

The utility model relates to the technical field of gear dismounting, in particular to a gear dismounting tool which comprises a tray, an ejection mechanism, a guide mechanism and a supporting mechanism, the ejection mechanism comprises a hydraulic jack which is arranged in the center of the tray to push a mandrel, the guide mechanism comprises a plurality of guide rods which are arranged on the tray, and the supporting mechanism is arranged on the tray. The guide rod surrounds the outer wall face of the mandrel so as to guide the mandrel in the separation process of the mandrel, the supporting mechanism comprises a plurality of clamping jaws capable of moving in the radial direction of the tray, and the clamping jaws clamp a gear so as to support the gear in the separation process of the mandrel. The technical problem that in the prior art, a gear and a mandrel are difficult to disassemble is solved.

Description

Technical Field

[0001] This utility model relates to the field of gear disassembly technology, and specifically to a gear disassembly tooling. Background Technology

[0002] Gears and spindles are typically assembled using an interference fit. However, during use or manufacturing, there are situations where the gear needs to be disassembled and replaced with a new one. Since the spindle is usually a smooth shaft, it is difficult to apply external force. Furthermore, when the external force deviates from the spindle's centerline, it generates radial force, which can damage the spindle surface and the gear's inner bore, thus affecting gear disassembly. Utility Model Content

[0003] In order to solve the technical problem of the difficulty in disassembling gears and spindles in the prior art, this application proposes a gear disassembly tooling, which solves the above-mentioned technical problem.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] This utility model provides a gear disassembly fixture, comprising: a tray; an ejection mechanism including a hydraulic jack disposed in the center of the tray to push a mandrel; a guide mechanism including multiple guide rods disposed on the tray, the guide rods encircling the outer wall of the mandrel to guide it during the separation process; and a support mechanism including multiple grippers movable along the radial direction of the tray, the grippers holding the gear to support it during the separation process.

[0006] Furthermore, a slider is provided on one end of the gripper that is connected to the tray, and correspondingly, a radially extending sliding groove is provided on the tray, and the slider is slidably engaged in the sliding groove.

[0007] Furthermore, the tray is equipped with a hydraulic cylinder, which adjusts the position of the slider in the sliding groove through a hydraulic rod connected to the slider, thereby realizing the clamping and releasing of the gripper.

[0008] Furthermore, the end of the gripper away from the tray is provided with a claw hook that can abut against the gear in the opposite direction when the mandrel is separated.

[0009] Furthermore, one end of the guide rod passes through the tray and is screwed onto the tray.

[0010] Furthermore, the guiding mechanism also includes an elastic element that can tighten all the guide rods towards the center, the elastic element being connected to the guide rods, and the connected elastic element being penetrated by a mandrel.

[0011] Furthermore, the guide rod is provided with a rotating joint, and the connection point between the elastic element and the guide rod is formed between the rotating joint and the end of the guide rod away from the tray, so that a floating section is formed on the guide rod that fits against the outer wall surface of the mandrel.

[0012] Furthermore, the end of the guide rod away from the tray is provided with a roller that fits onto the spindle.

[0013] Furthermore, the end of the ejector rod of the hydraulic jack is provided with a support frame, and an ejector surface with an area larger than the end face area of ​​the ejector rod is formed on the support frame.

[0014] Furthermore, the tray has threaded holes on its surface for hoisting.

[0015] Based on the above technical solution, the technical effects that this utility model can achieve are as follows:

[0016] This utility model's gear disassembly fixture features a guide mechanism with multiple guide rods acting on the outer circumference of the mandrel to guide the gear during separation and prevent radial force generated by deviation of the mandrel's centerline. The support mechanism has multiple grippers that hold the gear to support it in the opposite direction during the separation of the mandrel. The ejection mechanism's hydraulic jack applies force to the end face of the mandrel to separate the gear from the mandrel. This design solves the problem of radial force easily generated when the gear separates from the gear shaft and improves the quality of gear disassembly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the gear disassembly fixture of this utility model;

[0018] Figure 2 This is a schematic diagram from another perspective of the gear disassembly fixture of this utility model.

[0019] In this utility model: 1-hydraulic jack; 2-support frame; 3-gripper; 31-claw hook; 4-hydraulic cylinder; 5-pallet; 51-sliding groove; 52-threaded hole; 6-guide rod; 61-rotation joint (position only shown in the figure); 62-floating section; 7-roller; 8-elastic element; 9-hydraulic rod; 10-slider. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] like Figure 1-2 As shown, this utility model provides a gear disassembly fixture, including a tray 5, an ejection mechanism, a guide mechanism, and a support mechanism. The ejection mechanism includes a hydraulic jack 1 disposed in the center of the tray 5 to push the mandrel. The guide mechanism includes multiple guide rods 6 disposed on the tray 5. The guide rods 6 encircle the outer wall of the mandrel to guide it during the separation process. The support mechanism includes multiple grippers 3 that can move along the radial direction of the tray 5. The grippers 3 hold the gear to support it during the separation process.

[0022] In one specific embodiment of this utility model, a slider 10 is provided on one end of the gripper 3 connected to the tray 5. Correspondingly, a radially extending sliding groove 51 is provided on the tray 5. The sliding groove 51 is preferably a T-shaped groove, and the slider 10 is slidably fitted in the sliding groove 51.

[0023] In one specific embodiment of this utility model, a hydraulic cylinder 4 is provided on the tray 5. The hydraulic cylinder 4 adjusts the position of the slider 10 in the sliding groove 51 by means of a hydraulic rod 9 connected to the slider 10, thereby realizing the clamping and releasing of the gripper 3.

[0024] In one specific embodiment of this utility model, the end of the gripper 3 away from the tray 5 is provided with a claw hook 31 that can abut against the gear in the opposite direction when the spindle is separated.

[0025] In one specific embodiment of this utility model, one end of the guide rod 6 passes through the tray 5 and is screwed onto the tray 5, thereby facilitating the adjustment of the extension length of the guide rod 6 at one end of the tray 5.

[0026] In one specific embodiment of this utility model, the guiding mechanism further includes an elastic element 8 that can tighten all the guide rods 6 towards the center. The elastic element 8 is connected to the guide rods 6, and the connected elastic element 8 is penetrated by the mandrel. Multiple guide rods 6 are connected by the elastic element 8, which is preferably a spring, thereby ensuring that the guide rods 6 move towards the center, that is, they will abut against the outer wall surface of the mandrel.

[0027] In one specific embodiment of this utility model, a rotating joint 61 is provided on the guide rod 6, and the connection point between the elastic member 8 and the guide rod 6 is formed between the rotating joint 61 and the end of the guide rod 6 away from the tray 5, so that a floating section 62 is formed on the guide rod 6 that fits against the outer wall surface of the mandrel. Under the force of the elastic member 8, the floating section 62 always fits against the outer wall surface of the mandrel for guidance.

[0028] In one specific embodiment of this utility model, a roller 7 is provided at the end of the guide rod 6 away from the tray 5, which is attached to the mandrel. The roller 7 is formed as the contact point between the floating section 62 and the outer wall of the mandrel, thereby preventing scratches on the outer wall of the mandrel.

[0029] In one specific embodiment of this utility model, the end of the ejector rod of the hydraulic jack 1 is provided with a support frame 2, and an ejector surface with an area larger than the end face area of ​​the ejector rod is formed on the support frame 2, thereby expanding the contact surface with the end of the mandrel.

[0030] In one specific embodiment of this utility model, the tray 5 has threaded holes 52 for hoisting on its surface, which facilitates the hoisting and transportation of the gear disassembly tooling.

[0031] The working process of the gear disassembly fixture is as follows: The length of the hydraulic rod 9 is adjusted by the hydraulic cylinder 4. The hydraulic rod 9 drives the slider 10 to slide in the T-slot on the tray 5. The slider 10 drives the chuck to move, so as to adjust the diameter required for disassembling gears of different diameters. The upper end of the guide rod 6 is threaded. The guide rod 6 can be adjusted to extend and retract upwards for mandrels of different lengths. The guide rod 6 is connected by a spring and is suitable for mandrels of different diameters. During operation, the mandrel passes through the spring on the guide mechanism. The elasticity of the spring causes the roller 7 to roll along the mandrel, preventing the fixture from tilting during disassembly. The ejector rod of the hydraulic jack 1 extends, and the support frame 2 on the ejector rod presses against the end face of the mandrel. With the assistance of the guide mechanism, the gear is separated from the mandrel.

[0032] The advantages of this utility model are as follows: the tooling structure is simple and easy to operate. The ejection mechanism acts on the end face of the mandrel, and with the assistance of the guide mechanism, the support mechanism applies force on the end face of the gear to achieve the purpose of separating the gear from the mandrel, reducing the difficulty of gear disassembly. Furthermore, the clamping and centering of the gear shaft by the guide mechanism avoids damage caused by misalignment of the mandrel and gear during disassembly.

[0033] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A gear disassembly fixture, characterized in that, include: Tray (5); The ejection mechanism includes a hydraulic jack (1) disposed in the center of the tray (5) to push the mandrel; A guiding mechanism comprising a plurality of guide rods (6) disposed on the tray (5), the guide rods (6) encircling the outer wall surface of the mandrel to guide it during the separation process of the mandrel; The support mechanism includes a plurality of grippers (3) movable in the radial direction along the tray (5) shown, the grippers (3) holding the gear to support the gear during the separation of the mandrel.

2. The gear disassembly fixture according to claim 1, characterized in that, A slider (10) is provided on one end of the gripper (3) that is connected to the tray (5). Correspondingly, a radially extending sliding groove (51) is provided on the tray (5), and the slider (10) slides in the sliding groove (51).

3. The gear disassembly fixture according to claim 2, characterized in that, The tray (5) is equipped with a hydraulic cylinder (4), which adjusts the position of the slider (10) in the sliding groove (51) by means of a hydraulic rod (9) connected to the slider (10), thereby realizing the clamping and releasing of the gripper (3).

4. The gear disassembly fixture according to claim 1, characterized in that, The gripper (3) is provided with a claw hook (31) on the end away from the tray (5) that can abut against the gear in the opposite direction when the mandrel is separated.

5. The gear disassembly fixture according to claim 1, characterized in that, One end of the guide rod (6) passes through the tray (5) and is screwed onto the tray (5).

6. The gear disassembly fixture according to claim 1, characterized in that, The guiding mechanism also includes an elastic element (8) that can tighten all the guide rods (6) towards the center. The elastic element (8) is connected to the guide rods (6) and is penetrated by a mandrel after connection.

7. The gear disassembly fixture according to claim 6, characterized in that, The guide rod (6) is provided with a rotating joint (61), and the connection point between the elastic element (8) and the guide rod (6) is formed between the rotating joint (61) and the end of the guide rod (6) away from the tray (5), so that a floating section (62) is formed on the guide rod (6) that fits against the outer wall surface of the mandrel.

8. The gear disassembly fixture according to claim 7, characterized in that, The guide rod (6) has a roller (7) attached to the spindle at the end furthest from the tray (5).

9. The gear disassembly fixture according to claim 1, characterized in that, The hydraulic jack (1) has a support frame (2) at the end of its ejector rod, and the support frame has an ejector surface with an area larger than that of the ejector rod end face.

10. The gear disassembly fixture according to claim 1, characterized in that, The tray (5) has threaded holes (52) on its surface for hoisting.

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