Disassembling tool

Abstract

The utility model relates to a disassembling tool, and belongs to the technical field of disassembling tools, the disassembling tool comprises a clamping assembly, a pre-tightening mechanism, an ejection bolt and a first hinge pin located above the clamping assembly, the clamping assembly comprises two clamping arms hinged in a shear mode, the two clamping arms are hinged through a second hinge pin, the lower ends of the clamping arms are provided with clamping parts bent inwards, and the clamping parts are connected with the pre-tightening mechanism. The upper end is hinged to the first hinge pin through a connecting rod assembly. The pre-tightening mechanism is used for driving the two clamping arms to rotate around the second hinge pin, so that the two clamping parts get close to each other to clamp the to-be-disassembled component, the ejection bolt sequentially penetrates through the first hinge pin and the second hinge pin, and the ejection bolt is in threaded fit with the first hinge pin. The clamping arms which are hinged in a shear mode are matched with the pre-tightening mechanism, so that the to-be-disassembled part can be quickly clamped, and the to-be-disassembled part can be quickly disassembled by being matched with the ejection bolt.

Description

Technical Field

[0001] This utility model relates to the field of disassembly tools, and in particular to a disassembly tool. Background Technology

[0002] Currently, interference fits are widely used in the connection structures between shaft parts and keys, pins, etc. When keys, pins, etc., need to be replaced due to fatigue damage or wear, existing disassembly methods mainly include hammering and simple pulling tools. However, the above-mentioned existing technologies have the following technical problems that urgently need to be solved:

[0003] 1. Traditional hammering method forces keys and pins to disengage from mating surfaces through impact force. However, this process can easily cause plastic deformation of the disassembled parts. At the same time, the impact force transmission path is uncontrollable, which can easily cause mechanical damage such as dents and scratches on the mounting surface, seriously affecting the subsequent assembly accuracy.

[0004] 2. Traditional drawing tools have limited clamping force. When there is rust, surface burrs or large interference fit, the disassembly resistance increases significantly, and the tool is prone to slippage, resulting in disassembly failure.

[0005] 3. Existing disassembly and assembly tools are mostly designed for a single specification, making it difficult to adapt to the disassembly requirements of keys and pins of different sizes. When dealing with various connection structures, it is necessary to frequently change specialized tools, significantly reducing maintenance efficiency and increasing enterprise maintenance costs;

[0006] In summary, existing technologies suffer from technical bottlenecks such as poor operational reliability, high risk of equipment damage, and insufficient tool versatility during the disassembly of shaft-type component connection structures. There is an urgent need to develop a disassembly tool to solve these technical problems. Utility Model Content

[0007] In view of the problems existing in the prior art, this utility model provides a disassembly tool.

[0008] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a disassembly tool, including a clamping assembly, a pre-tightening mechanism, an ejector bolt and a first hinge pin located above the clamping assembly. The clamping assembly includes two clamping arms that are scissor-hinged. The two clamping arms are hinged by a second hinge pin. The lower end of the clamping arm is provided with an inwardly bent clamping part, and the upper end is hinged to the first hinge pin through a connecting rod assembly.

[0009] The pre-tightening mechanism is used to drive the two clamping arms to rotate around the second hinge pin, so that the two clamping parts come closer to each other to clamp the part to be disassembled. The ejector bolt passes through the first hinge pin and the second hinge pin in sequence, and the ejector bolt is threadedly engaged with the first hinge pin.

[0010] Furthermore, the first hinge pin is provided with a threaded hole that mates with the ejector bolt, and the second hinge pin is provided with a through hole for the ejector bolt to pass through.

[0011] Furthermore, the upper end of the clamping arm is hinged to the connecting rod assembly via a third hinge pin. The connecting rod assembly includes two connecting plates, one end of which is hinged to the second hinge pin, and the other end of which is hinged to the third hinge pin.

[0012] Furthermore, the pre-tightening mechanism includes a pre-tightening bolt that passes through two third hinge pins and is locked by a pre-tightening nut.

[0013] Furthermore, the lower end of the ejector bolt is provided with a V-shaped seat, the upper end of the V-shaped seat is provided with a countersunk hole, the lower end of the ejector bolt extends into the countersunk hole and can rotate relative to the deep hole, and the end of the V-shaped seat opposite to the ejector bolt is provided with a V-shaped groove.

[0014] Furthermore, the clamping arm includes two clamping plates arranged opposite each other. The clamping plates have a mounting hole in the middle that rotatably engages with the second hinge pin. Multiple connecting components are provided between the clamping plates. The connecting components include a limiting tube and a limiting bolt. The limiting bolt passes through the limiting tube and the two clamping plates and is locked with a limiting nut.

[0015] Furthermore, the clamping part includes a clamping block disposed between two clamping plates, and the inner side of the clamping block is provided with a toothed structure.

[0016] The beneficial effects of this application are as follows: 1. By using the clamping arm with scissor hinge and the pre-tightening mechanism, the clamping of the part to be disassembled can be achieved quickly, and the disassembly of the part to be disassembled can be achieved quickly by using the ejector bolt; by using the pre-tightening bolt and the pre-tightening nut, the distance between the two clamping parts can be quickly adjusted to meet the disassembly requirements of parts to be disassembled of different widths.

[0017] 2. V-shaped seats can provide additional support and positioning. V-shaped grooves can provide a larger contact surface for shaft parts, avoid stress concentration and stabilize the stress structure, prevent the jacking bolts from shifting, and further improve the stability of the disassembly process.

[0018] 3. The clamping arm adopts a structural design with two oppositely arranged clamping plates and connecting components, which enhances the strength and rigidity of the clamping arm, prevents deformation during disassembly, and ensures the stability of the disassembly process.

[0019] 4. The toothed structure on the inner side of the clamping block increases the friction between the clamping block and the part to be disassembled, preventing the part from slipping during disassembly and improving the reliability of clamping. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] The markings in the diagram are: 1. Clamping arm, 101. Clamping part, 102. Clamping block, 11. Clamping plate, 12. Limiting bolt, 2. Second hinge pin, 4. First hinge pin, 5. Ejection bolt, 6. Third hinge pin, 7. Preload bolt, 71. Preload nut, 8. V-shaped seat, 9. Motor shaft, 91. Flat key. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Please see Figure 1 This utility model provides a disassembly tool, including a clamping assembly, a pre-tightening mechanism, an ejector bolt 5, and a first hinge pin 4 located above the clamping assembly. The clamping assembly includes two clamping arms 1 that are scissor-hinged and are hinged together by a second hinge pin 2. The lower end of each clamping arm 1 is provided with an inwardly bent clamping part 101, and the upper end is hinged to the first hinge pin 4 through a connecting rod assembly. The pre-tightening mechanism is used to drive the two clamping arms 1 to rotate around the second hinge pin 2, so that the two clamping parts 101 move closer to each other to clamp the part to be disassembled. The ejector bolt 5 passes through the first hinge pin 4 and the second hinge pin 2 in sequence, and the ejector bolt 5 is threadedly engaged with the first hinge pin 4.

[0024] The first hinge pin 4 has a threaded hole that mates with the ejector bolt 5, and the second hinge pin 2 has a through hole through which the ejector bolt 5 passes. The upper end of the clamping arm 1 is hinged to the connecting rod assembly via the third hinge pin 6. The connecting rod assembly includes two connecting plates, one end of which is hinged to the second hinge pin 2, and the other end of which is hinged to the third hinge pin 6. When the first hinge pin 4 moves, it can drive the clamping arm 1 to rotate around the second hinge pin 2, thereby realizing the opening and closing of the two clamping parts 101.

[0025] Specifically, the pre-tightening mechanism includes a pre-tightening bolt 7, which passes through two third hinge pins 6 and is locked by a pre-tightening nut 71. This causes the two clamping arms 1 to rotate around the second hinge pins 2, bringing the two clamping parts 101 closer together to clamp the component to be disassembled. When it is necessary to adjust the clamping force, rotating the pre-tightening nut 71 changes the tension of the pre-tightening bolt 7 on the third hinge pins 6, thereby adjusting the tension of the clamping arms 1 and controlling the clamping force.

[0026] More specifically, the clamping arm 1 includes two opposing clamping plates 11. Each clamping plate 11 has a mounting hole in its center for rotational engagement with the second hinge pin 2, and a positioning hole at its upper end for rotational engagement with the third hinge pin 6. Multiple connecting components are provided between the clamping plates 11, including a limiting tube and a limiting bolt 12. The limiting bolt 12 passes through the limiting tube and the two clamping plates 11 and is locked with a limiting nut. This structure enhances the overall strength and rigidity of the clamping arm 1, preventing deformation of the clamping plates 11 during clamping. The clamping part 101 includes a clamping block 102 disposed between the two clamping plates 11. The clamping block 102 is fixedly connected to the clamping plates 11 by bolts, and its inner surface has a toothed structure. It should be noted that any parts not detailed in this application are prior art.

[0027] In addition, the lower end of the ejector bolt 5 is provided with a V-shaped seat 8, the upper end of the V-shaped seat 8 is provided with a countersunk hole, the lower end of the ejector bolt 5 extends into the countersunk hole and can rotate relative to the deep hole, and the end of the V-shaped seat 8 opposite to the ejector bolt 5 is provided with a V-shaped groove.

[0028] Taking the flat key 91 on the motor shaft 9 as an example, in this application, the V-shaped seat 8 is placed on the upper end of the motor shaft 9, and the flat key 91 is placed between the two clamping parts 101. Through the cooperation of the pre-tightening bolt 7 and the pre-tightening nut 71, a pulling force is applied to the third hinge pin 6, driving the connecting rod assembly to move. This causes the two clamping arms 1 to rotate around the second hinge pin 2, and the clamping parts 101 gradually approach and clamp the part to be disassembled. The toothed structure on the inner side of the clamping block 102 effectively prevents the part from slipping, ensuring a firm clamping.

[0029] After clamping is complete, rotate the ejector bolt 5. Since the ejector bolt 5 is threadedly engaged with the first hinge pin 4, the second hinge pin 2 moves upward, thereby applying an ejection force to the flat key 91 and separating it from the motor shaft 9. During the ejection process, the V-groove of the V-slot of the V-slot seat 8 provides stable support, ensuring a smooth ejection process and preventing damage to components due to uneven force.

[0030] After the flat key 91 is completely separated from the motor shaft 9, loosen the preload nut 71 to open the clamping parts 101 of the two clamping arms 1, remove the disassembled flat key 91, and complete the entire disassembly process.

[0031] Of course, this utility model is not limited to the embodiments described above. Several other embodiments based on the design concept of this utility model are also provided below.

[0032] For example, in other embodiments, unlike the embodiments described above, as shown in the figure, the lower end of the ejector bolt 5 is rotatably provided with a V-shaped seat 8, and the end of the V-shaped seat 8 opposite to the ejector bolt 5 is provided with a V-shaped groove.

[0033] It should be noted that the above embodiments are only used to illustrate the present utility model, but the present utility model is not limited to the above embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A disassembly tool, characterized in that, It includes a clamping assembly, a pre-tightening mechanism, an ejector bolt (5) and a first hinge pin (4) located above the clamping assembly. The clamping assembly includes two clamping arms (1) that are scissor-hinged. The two clamping arms (1) are hinged by a second hinge pin (2). The lower end of the clamping arm (1) is provided with an inwardly bent clamping part (101), and the upper end is hinged to the first hinge pin (4) through a connecting rod assembly. The pre-tightening mechanism is used to drive the two clamping arms (1) to rotate around the second hinge pin (2), so that the two clamping parts (101) come closer to each other to clamp the parts to be disassembled; The ejector bolt (5) passes through the first hinge pin (4) and the second hinge pin (2) in sequence, and the ejector bolt (5) is threadedly engaged with the first hinge pin (4).

2. The disassembly tool according to claim 1, characterized in that: The first hinge pin (4) has a threaded hole that mates with the ejector bolt (5), and the second hinge pin (2) has a through hole through which the ejector bolt (5) passes.

3. The disassembly tool according to claim 1, characterized in that: The upper end of the clamping arm (1) is hinged to the connecting rod assembly via the third hinge pin (6). The connecting rod assembly includes two connecting plates, one end of which is hinged to the second hinge pin (2), and the other end of which is hinged to the third hinge pin (6).

4. A disassembly tool according to claim 3, characterized in that: The pre-tightening mechanism includes a pre-tightening bolt (7) that passes through two third hinge pins (6) and is locked by a pre-tightening nut (71).

5. A disassembly tool according to claim 4 or 3, characterized in that: The ejector bolt (5) has a V-shaped seat (8) at its lower end and a countersunk hole at its upper end. The lower end of the ejector bolt (5) extends into the countersunk hole and can rotate relative to the deep hole. The V-shaped seat (8) has a V-shaped groove at one end away from the ejector bolt (5).

6. A disassembly tool according to claim 4, characterized in that: The clamping arm (1) includes two clamping plates (11) arranged opposite to each other. The clamping plate (11) has a mounting hole in the middle that rotates with the second hinge pin (2). Multiple connecting components are provided between the clamping plates (11). The connecting components include a limiting tube and a limiting bolt (12). The limiting bolt (12) passes through the limiting tube and the two clamping plates (11) and is locked with a limiting nut.

7. A disassembly tool according to claim 1, characterized in that: The clamping part (101) includes a clamping block (102) disposed between two clamping plates (11), and the inner side of the clamping block (102) is provided with a toothed structure.

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