Clamp for disassembling circular rotating shaft

Abstract

The clamp comprises a connecting block, a cavity is formed in the connecting block, the interior and the two ends of the connecting block are arranged in a penetrating mode, two arc hook claws are installed in the connecting block, hook claw parts of the arc hook claws stretch out in the direction of one end of the connecting block, and a gap is formed between the two arc hook claws. An adjusting assembly used for adjusting the gap between the two arc claws is installed on the connecting block, and a pulling mechanism is arranged at the other end of the connecting block and used for pulling the arc claws to move in the axial direction. The two arc claws clamp and fix the torsion bar in the circular rotating shaft, then the pulling mechanism is adopted to pull the arc claws in the axial direction so that the circular rotating shaft can be taken out of the rotating shaft hole, the clamping tool is simple in structure and convenient and fast to operate, and the situation that the rotating shaft and the torsion bar are damaged due to the fact that the rotating shaft cannot be taken out, and cost waste is caused can be avoided.

Description

Technical Field

[0001] This invention relates to the field of clamping technology, and in particular to a clamp for disassembling a circular rotating shaft. Background Technology

[0002] In existing technologies, structural components commonly include a rotating shaft installed in a rotating hole. The diameters of the shaft and the hole are allowed to fluctuate within a certain range to ensure normal rotation. If the shaft diameter is much smaller than the hole diameter, the component will deviate from its original rotation path, resulting in abnormal noise, vibration, and wear. If the diameter difference is too small, an interference fit will occur due to machining precision issues, preventing the shaft from rotating properly within the hole. Therefore, a certain clearance fit exists between the shaft and the hole. Because some structural components have high rotational requirements, the clearance between the shaft and the hole is smaller. When the shaft is subjected to external loads, it will deform, leading to an interference fit between the shaft and the hole, preventing normal rotation or disassembly. Since some shaft components require frequent disassembly for testing, the interference fit increases disassembly difficulty, and in severe cases, the shaft may need to be removed by destructive means, wasting disassembly time and increasing production costs.

[0003] The shaft structure features a blind shaft hole, with the torsion bar and shaft bottom fixedly connected. Only a portion of the torsion bar head protrudes from the shaft hole. Currently, pliers are commonly used to disassemble the shaft and torsion bar; simply gripping the torsion bar head allows for shaft removal. However, if the shaft has an interference fit, pliers are insufficient for removal. The torsion bar head can be square or round, with only a small portion protruding from the shaft hole. When gripping the torsion bar head with pliers, slippage is common when pulling, making removal difficult and increasing time. If removal is impossible, a threaded hole must be drilled at the top of the torsion bar head, and a screw tightened for removal. While this method avoids slippage, the tighter clamping of the shaft requires greater force, potentially damaging the torsion bar and increasing disassembly time. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a clamp for disassembling a circular shaft.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a clamp for disassembling a circular rotating shaft, comprising a connecting block, the interior of which is hollow and extends through both ends. Two arc-shaped hooks are installed inside the connecting block, with the hook portions of the arc-shaped hooks extending along one end of the connecting block. A gap is provided between the two arc-shaped hooks. An adjusting component for adjusting the gap between the two arc-shaped hooks is installed on the connecting block. A pulling mechanism is provided at the other end of the connecting block for pulling the arc-shaped hooks to move axially.

[0007] Preferably, the pulling mechanism includes a thrust ball bearing, a central tension screw, and a support assembly. The thrust ball bearing is fixedly sleeved on one end of the central tension screw and is also installed inside the connecting block. The end of the central tension screw away from the thrust ball bearing passes through the interior of the connecting block and is threadedly connected to the support assembly.

[0008] Preferably, the support assembly includes a cross arm with a first threaded hole in the middle, a central tension screw threaded through the first threaded hole, and adjusting rods vertically installed at both ends of the cross arm. The length direction of the adjusting rods is the same as the length direction of the central tension screw, and a sealing cap is provided at the end of the adjusting rod away from the cross arm.

[0009] Preferably, the adjusting rod consists of a support sleeve and a support screw. The support sleeve is threaded onto the support screw, the support sleeve is fixedly connected to the cross arm, and the support screw is fixedly connected to the clamping cover.

[0010] Preferably, an assist rod is fixedly installed at the end of the central tension screw away from the thrust ball bearing.

[0011] Preferably, the adjustment assembly includes an adjustment screw and an adjustment nut, and the claw portions of the two arc-shaped claws are each provided with a circular hole, through which the adjustment screw passes in sequence and is connected to the adjustment nut.

[0012] Preferably, the connecting block has a fixing screw extending laterally from the side, the fixing screw passing through two arc-shaped hooks, and the fixing screw is fitted with a fixing nut.

[0013] Preferably, the connecting block has bearing grooves inside.

[0014] Preferably, the side planes of the two arc-shaped hooks are arranged opposite each other, and the side plane of the hook portion of the arc-shaped hook is provided with a receiving groove. The hook portion of the arc-shaped hook is also provided with a connecting groove, which is connected to the receiving groove.

[0015] The beneficial effects of this invention are as follows: 1. Two arc-shaped hooks extend into the shaft hole. The distance between the two arc-shaped hooks is adjusted by the adjustment component. Two receiving grooves enclose the head of the torsion bar in the circular shaft. Two connecting grooves enclose the body of the torsion bar in the circular shaft as well as the edge diameter of the body and the head. The two arc-shaped hooks clamp and fix the torsion bar in the circular shaft. Then, a pulling mechanism is used to pull the arc-shaped hooks axially to facilitate the removal of the circular shaft from the shaft hole. The clamping tool has a simple structure, is easy to operate, and avoids damage to the shaft hole.

[0016] 2. The two arc-shaped hooks and the central tension screw are connected by a connecting block, so that the common center line of the two arc-shaped hooks is on the same axis as the central tension screw. Through the cooperation of the support assembly and the central tension screw, rotating the central tension screw generates axial tension, which pulls the arc-shaped hooks outward along the axial direction, thereby removing the circular shaft. The thrust ball bearing is installed in the connecting block, which prevents the arc-shaped hooks from being scratched on the workpiece due to rotating with the central tension screw, while providing pulling force for faster removal of the circular shaft. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the rotating shaft hole, the circular rotating shaft, and the torsion bar in this invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This invention is mainly used to demonstrate the partial structural diagrams of the central thrust screw, thrust ball bearing, and booster rod; Figure 4 This invention is mainly used to illustrate a partial structural diagram of the support component; Figure 5 This is a partial structural diagram of the present invention, mainly used to illustrate the structure of the arc hook claw, connecting block and adjusting component, etc. Figure 6 This is a partial cross-sectional structural diagram of the present invention, mainly used to demonstrate the structure of the arc hook, connecting block and adjusting component; In the diagram: 1-Connecting block; 2-Arc hook; 3-Thrust ball bearing; 4-Central tension screw; 5-Horizontal arm; 6-Adjusting rod; 61-Support sleeve; 62-Support screw; 7-Clamping cap; 8-First threaded hole; 9-Assist rod; 10-Adjusting screw; 11-Adjusting nut; 12-Round hole; 14-Fixing screw; 15-Fixing nut; 16-Bearing groove; 17-Receiving groove; 18-Connecting groove; 19-Shaft hole; 20-Circular shaft; 21-Torsion bar. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0020] In this embodiment, refer to Figure 1 The structure is a rotating shaft. In cases where there is an interference fit between the circular rotating shaft 20 and the rotating shaft hole 19, the circular rotating shaft 20 needs to be removed. The rotating shaft hole 19 is a blind hole. The torsion bar 21 and the bottom of the circular rotating shaft 20 are fixedly connected, and only a part of the head of the torsion bar 21 is exposed outside the rotating shaft hole 19.

[0021] In this embodiment, refer to Figure 2 , Figure 5 and Figure 6 The device includes a connecting block 1, which has a hollow interior and is designed to pass through both ends. Two arc-shaped claws 2 are installed inside the connecting block 1. A fixing screw 14 passes through the connecting block 1 from the side and also passes through one end of the two arc-shaped claws 2 inside the connecting block 1. A fixing nut 15 is fitted onto the end of the fixing screw 14. The fixing nut 15 is pressed against the outer surface of the connecting block 1 to lock the two arc-shaped claws 2 inside the connecting block 1.

[0022] The claw portion of the arc hook 2 extends along one end of the connecting block 1, and there is a gap between the two arc hooks 2. An adjustment component for adjusting the gap between the two arc hooks 2 is installed on the connecting block 1. The adjustment component includes an adjustment screw 10 and an adjustment nut 11. The claw portions of the two arc hooks 2 are laterally opened with round holes 12, and the two round holes 12 correspond to each other. The adjustment screw 10 passes through the two round holes 12 and the adjustment nut 11 respectively. By rotating the adjustment screw 10, the lateral position of one of the arc hooks 2 can be adjusted, thereby achieving the purpose of adjusting the gap between the two arc hooks 2. The adjustment nut 11 is then used to lock the gap.

[0023] In this embodiment, refer to Figure 5 and Figure 6The two arc hooks 2 have their side planes facing each other. The side plane of the hook part of the arc hook 2 has a receiving groove 17. The hook part of the arc hook 2 also has a through groove 18. The through groove 18 is connected to the receiving groove 17. The receiving groove 17 and the through groove 18 are used to fix and clamp the rod head and the rod body of the torsion bar 21, respectively.

[0024] The installation steps for the two arc hooks 2 are as follows: First, insert the two arc hooks 2 into the connecting block 1. Then, insert the fixing screw 14 horizontally through the connecting block 1 and the two arc hooks 2, and lock it with the fixing nut 15 to install the arc hooks 2 in the connecting block 1. Finally, insert the adjusting screw 10 horizontally through the two round holes 12, and rotate the adjusting screw 10 to move one of the arc hooks 2 in a small range, thereby adjusting the distance between the two arc hooks 2 to facilitate the reinforcement of the two arc hooks 2 in clamping the circular rotating shaft 20.

[0025] In this embodiment, refer to Figure 2 The other end of the connecting block 1 is provided with a pulling mechanism, which is used to pull the arc hook 2 to move axially, thereby driving the circular rotating shaft 20 to move out of the rotating shaft hole 19.

[0026] In this embodiment, refer to Figure 2 , Figure 3 , Figure 4 and Figure 6 The pulling mechanism includes a thrust ball bearing 3, a central tension screw 4, and a support assembly. The thrust ball bearing 3 is fixedly sleeved on one end of the central tension screw 4. The thrust ball bearing 3 is also installed inside the connecting block 1. The port diameter of the connecting block 1 is smaller than the internal diameter of the connecting block 1. The thrust ball bearing 3 is snapped into the connecting block 1. The connecting block 1 has a bearing groove 16 inside, which facilitates the rotation of the balls in the thrust ball bearing 3 along the trajectory of the bearing groove 16, thereby enhancing the stability of the rotation of the central tension screw 4.

[0027] The end of the central tension screw 4 away from the thrust ball bearing 3 passes through the interior of the connecting block 1 and is threaded onto the support assembly; the support assembly includes a cross arm 5, with a first threaded hole 8 in the middle of the cross arm 5, through which the central tension screw 4 is threaded; both ends of the cross arm 5 are vertically mounted with adjusting rods 6, the length direction of the adjusting rods 6 is in the same direction as the length direction of the central tension screw 4, and a clamping cover 7 is provided at the end of the adjusting rod 6 away from the cross arm 5; the adjusting rod 6 is composed of a support sleeve 61 and a support screw 62, the support sleeve 61 is threaded onto the support screw 62, the support sleeve 61 is fixedly connected to the cross arm 5, and the support screw 62 is integrally connected to the clamping cover 7.

[0028] By rotating the support screw 62, the overall length of the adjusting rod 6 is adjusted, and the clamping cover 7 is pressed against the end face of the connecting block 1 away from the central tension screw 4, so that the clamping cover 7 is pressed against the end face of the connecting block 1, providing a fixed fulcrum for the adjusting rod 6 and the cross arm 5, so as to facilitate the rotation of the central tension screw 4.

[0029] In this embodiment, refer to Figure 3 An assist rod 9 is fixedly installed at the end of the center tension screw 4 away from the thrust ball bearing 3. The assist rod 9 helps to rotate the center tension screw 4.

[0030] The working principle of this invention is as follows: Two arc-shaped hooks 2 extend into the shaft hole 19. The distance between the two arc-shaped hooks 2 is adjusted by adjusting the screw 10. Two receiving grooves 17 enclose the head of the torsion bar 21 in the circular shaft 20, and two connecting grooves 18 enclose the body of the torsion bar 21 in the circular shaft 20, so that the two arc-shaped hooks 2 clamp and fix the torsion bar 21 in the circular shaft 20. The two arc-shaped hooks 2 and the central tension screw 4 are connected by the connecting block 1, so that the center line between the two arc-shaped hooks 2 and the central tension screw 4 are on the same axis. Through the cooperation of the support component and the central tension screw 4, the central tension screw 4 is rotated and a tension is generated in the axial direction, thereby pulling the arc-shaped hooks 2 outward in the axial direction, so as to remove the circular shaft 20 from the shaft hole 19. The clamping tool has a simple structure, is easy to operate, and can also avoid damage to the shaft and torsion bar caused by the inability to remove the shaft, thus avoiding cost waste.

[0031] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A clamp for disassembling a circular shaft, characterized in that: Includes a connecting block (1), the inside of the connecting block (1) is a cavity, the inside of the connecting block (1) is through to both ends, two arc hooks (2) are installed inside the connecting block (1), the hook part of the arc hook (2) extends along one end of the connecting block (1), there is a gap between the two arc hooks (2), an adjustment component for adjusting the gap between the two arc hooks (2) is installed on the connecting block (1), and a pulling mechanism is provided at the other end of the connecting block (1) for pulling the arc hooks (2) to move axially.

2. The clamp for disassembling a circular shaft as described in claim 1, characterized in that: The pulling mechanism includes a thrust ball bearing (3), a central tension screw (4), and a support assembly. The thrust ball bearing (3) is fixedly sleeved on one end of the central tension screw (4). The thrust ball bearing (3) is also installed inside the connecting block (1). The end of the central tension screw (4) away from the thrust ball bearing (3) passes through the inside of the connecting block (1) and is threaded onto the support assembly.

3. The clamp for disassembling a circular shaft as described in claim 2, characterized in that: The support assembly includes a cross arm (5), a first threaded hole (8) is provided in the middle of the cross arm (5), a central tension screw (4) is threaded through the first threaded hole (8), and an adjusting rod (6) is vertically installed at both ends of the cross arm (5). The length direction of the adjusting rod (6) is the same as the length direction of the central tension screw (4), and a sealing cap (7) is provided at the end of the adjusting rod (6) away from the cross arm (5).

4. The clamp for disassembling a circular shaft as described in claim 3, characterized in that: The adjusting rod (6) consists of a support sleeve (61) and a support screw (62). The support sleeve (61) is threaded onto the support screw (62). The support sleeve (61) is fixedly connected to the cross arm (5), and the support screw (62) is fixedly connected to the clamping cover (7).

5. The clamp for disassembling a circular shaft as described in claim 2 or 3, characterized in that: An assist rod (9) is fixedly installed at the end of the central tension screw (4) away from the thrust ball bearing (3).

6. The clamp for disassembling a circular shaft as described in claim 1, characterized in that: The adjustment assembly includes an adjustment screw (10) and an adjustment nut (11). The claws of the two arc-shaped claws (2) each have a round hole (12). The adjustment screw (10) passes through the two round holes (12) and connects to the adjustment nut (11) in sequence.

7. The clamp for disassembling a circular shaft as described in claim 1, characterized in that: The connecting block (1) has a fixing screw (14) extending laterally from the side. The fixing screw (14) passes through two arc hooks (2), and the fixing screw (14) is fitted with a fixing nut (15).

8. The clamp for disassembling a circular shaft as described in claim 2, characterized in that: The connecting block (1) has a bearing groove (16) inside.

9. The clamp for disassembling a circular shaft as described in claim 1, characterized in that: The two arc hooks (2) are arranged opposite each other on their side planes. The side plane of the hook part of the arc hook (2) is provided with a receiving groove (17). The hook part of the arc hook (2) is also provided with a connecting groove (18) that is connected to the receiving groove (17).

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