Gear puller

Abstract

The utility model discloses a gear dismounting tool, including main screw rod and cross arm, the cross arm sets up in the main screw bush both sides and makes its whole present "I" character, is screw -threaded in the main screw bush and is connected with main screw rod, the sliding setting of cross arm has the adjusting sleeve, is provided with two through -holes on the adjusting sleeve, and one of through -hole sets up on the cross arm, and the other through -hole sets up and is equipped with the adjusting screw bush, the cross arm tip is provided with end limit piece, the adjusting screw bush is screw -threaded and is connected with the adjusting screw rod, and the one end of adjusting screw rod is rotatably connected with end limit piece, and the other end is connected with the dolly wheel, the adjusting screw rod length is same but the screw thread direction is opposite in the dolly wheel both sides, the adjusting sleeve bottom still is connected with the side rod, and the side rod bottom end is provided with the bottom support piece and is provided with the groove in the side rod bottom end lateral wall. The utility model discloses the purpose lies in providing a gear dismounting tool to increase the stability of the pull claw, prevents its deviation.

Description

Technical Field

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

[0002] When performing maintenance work, repair personnel often encounter situations such as disassembling gears. Generally, the gear and shaft are connected by an interference fit, making it difficult to pull them out manually. Usually, a puller is needed to pull them out. Existing pullers include two-jaw pullers and three-jaw pullers. For two-jaw pullers, the two jaws are usually hinged. During use, it is usually necessary to hold the two jaws by hand to keep them stable, otherwise the jaws may deviate. In this regard, the present invention provides a gear disassembly tool to increase the stability of the jaws and prevent them from deviating. Utility Model Content

[0003] The purpose of this invention is to provide a gear disassembly tool to increase the stability of the pull claw and prevent it from deviating.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A gear disassembly tool includes a main screw and a cross arm. The cross arm is arranged on both sides of the main screw sleeve, forming an overall "I" shape. The main screw is threadedly connected to the main screw sleeve. An adjusting sleeve is slidably arranged on the cross arm. The adjusting sleeve has two through holes. One through hole is fitted onto the cross arm, and the other through hole is fitted with an adjusting screw sleeve. An end limit plate is provided at the end of the cross arm. An adjusting screw is threadedly connected to the adjusting screw sleeve. One end of the adjusting screw is rotatably connected to the end limit plate, and the other end is connected to a turn wheel. The adjusting screws on both sides of the turn wheel are of the same length but have opposite thread directions. A side rod is also connected to the bottom of the adjusting sleeve. A bottom support plate is provided at the bottom end of the side rod, and a groove is provided on the side wall of the bottom end of the side rod.

[0006] Furthermore, two screw end plates are provided on one side of the main screw sleeve, and the end of the adjusting screw passes through the screw end plates, so that the actuating wheel is located between the two screw end plates.

[0007] Furthermore, the side rod is provided with external threads and a secondary threaded sleeve is threadedly connected to the side rod. A pressure plate is provided at the bottom end of the secondary threaded sleeve, and the diameter of the pressure plate is larger than the diameter of the secondary threaded sleeve.

[0008] Furthermore, the bottom end of the main screw is provided with a cone head, the top end of the main screw is provided with a handle, and a hexagonal protrusion is provided at the center of the handle.

[0009] Furthermore, a limiting ring is provided on the upper part of the main screw. When the limiting ring contacts the main screw sleeve, the bottom end of the cone head and the bottom surface of the support plate are located in the same plane.

[0010] Furthermore, the centerlines of the main screw and the two side rods are located in the same vertical plane.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention features an adjusting sleeve at the top of the side rod, which passes through the cross arm and also has an adjusting screw sleeve threaded through it. An adjusting screw is threaded into the adjusting screw sleeve, with the screws pointing in opposite directions and their ends connected to a turntable. Adjusting the distance between the two side rods simply requires rotating the turntable. Compared to existing hinged pull claws, this method keeps the relative positions of the two side rods fixed and facilitates adjustment. A groove is provided at the end of the side rod, allowing gear teeth to be inserted during use. This enhances the stability of the relative positions of the side rods and effectively prevents them from deviating. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] In the diagram, 1-cross arm, 2-end limiting plate, 3-adjusting screw, 4-main screw, 5-cone head, 6-limiting ring, 7-handle, 8-hexagonal protrusion, 9-adjusting sleeve, 10-adjusting screw sleeve, 11-main screw sleeve, 12-pressure plate, 13-pulling wheel, 14-side rod, 15-bottom plate, 16-groove, 17-secondary screw sleeve, 18-screw end plate. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0017] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0018] refer to Figure 1 As shown, this utility model provides a gear disassembly tool, including a main screw 4 and a cross arm 1. The cross arm 1 is arranged on both sides of the main screw sleeve 11, forming an overall "I" shape, and the lengths of the cross arms 1 on both sides are the same. The main screw 4 is threaded into the main screw sleeve 11, and the main screw 4 and the cross arm 1 form a cross-shaped structure. An adjusting sleeve 9 is slidably arranged on the cross arm 1. The adjusting sleeve 9 has two through holes. One through hole is fitted onto the cross arm 1, allowing the adjusting sleeve 9 to move along the direction of the cross arm 1. An adjusting screw sleeve 10 is fitted into the other through hole. It should be noted that the adjusting screw sleeve 10 has external flanges at both ends, allowing the adjusting screw sleeve 10 to only rotate. An end limiting piece 2 is provided at the end of the cross arm 1. The end limiting piece 2 can be welded to the cross arm 1. The adjusting sleeve 10 is threaded with an adjusting screw 3. One end of the adjusting screw 3 is rotatably connected to the end limiting piece 2, and the other end is connected to the actuating wheel 13. The adjusting screws 3 on both sides of the actuating wheel 13 are of the same length but have opposite thread directions. Preferably, the two adjusting screws 3 can be connected to both sides of the actuating wheel 13 by welding. Since the thread directions of the two adjusting screws 3 are opposite, the adjusting sleeve 9 can move synchronously in opposite directions when the actuating wheel 13 is rotated. The bottom of the adjusting sleeve 9 is also connected to a side rod 14. The bottom end of the side rod 14 is provided with a bottom support piece 15 and a groove 16 is provided on the side wall of the bottom end of the side rod 14. The purpose of providing the groove 16 is to engage the gear teeth into the groove 16, thereby further increasing the stability of the disassembly tool.

[0019] Specifically, the center lines of the main screw 4 and the two side rods 14 are located in the same vertical plane.

[0020] In some embodiments, two screw end plates 18 are provided on one side of the main screw sleeve 11, and the end of the adjusting screw 3 passes through the screw end plate 18, so that the actuating wheel 13 is located between the two screw end plates 18.

[0021] The side rod 14 is provided with external threads, and a secondary threaded sleeve 17 is threadedly connected to the side rod 14. A pressure plate 12 is provided at the bottom end of the secondary threaded sleeve 17, and the diameter of the pressure plate 12 is larger than the diameter of the secondary threaded sleeve 17. A limit ring 6 is provided on the upper part of the main screw 4. When the limit ring 6 contacts the main threaded sleeve 11, the bottom end of the cone head 5 and the bottom surface of the support plate 15 are located in the same plane.

[0022] In use, rotating the secondary screw sleeve 17 allows the bottom pressure plate 12 to press onto the gear, thereby stabilizing the device.

[0023] The main screw 4 is provided with a cone head 5 at its bottom end. The bottom end of the cone head 5 is semi-circular, so that the main screw 4 makes point contact with the shaft. The top end of the main screw 4 is provided with a handle 7 and a hexagonal protrusion 8 is provided at the center of the handle 7 to facilitate twisting and disassembly using an electric drill.

[0024] The process of using this utility model is as follows: rotating the actuating wheel 13 causes the two rods 14 to clamp on both sides of the gear. During this process, the gear teeth can be inserted into the groove 16 and / or the auxiliary screw sleeve 17 can be rotated to press it onto the gear to increase stability. Rotating the main screw 4 causes the main screw 4 to gradually move downward and press against the gear shaft end, thereby gradually lifting the gear upward and removing it. There are two ways to rotate the main screw 4: one is to hold the handle 7 by hand and rotate it, and the other is to rotate the hexagonal protrusion 8 through the electric drill sleeve.

[0025] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that those skilled in the art can devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, various modifications and improvements can be made to the components or layout of the subject matter arrangement within the scope of the disclosure, drawings, and claims. Besides modifications and improvements to the components or layout, other uses will be apparent to those skilled in the art.

Claims

1. A gear disassembly tool, comprising a main screw (4) and a cross arm (1), characterized in that: The cross arm (1) is set on both sides of the main screw sleeve (11) to make it into a "I" shape. The main screw (4) is threaded in the main screw sleeve (11). An adjusting sleeve (9) is slidably set on the cross arm (1). The adjusting sleeve (9) has two through holes. One through hole is fitted on the cross arm (1), and the other through hole is fitted with an adjusting screw sleeve (10). An end limit piece (2) is set at the end of the cross arm (1). An adjusting screw (3) is threaded in the adjusting screw sleeve (10). One end of the adjusting screw (3) is rotatably connected to the end limit piece (2), and the other end is connected to the actuating wheel (13). The adjusting screws (3) on both sides of the actuating wheel (13) have the same length but opposite thread directions. A side rod (14) is also connected to the bottom of the adjusting sleeve (9). A bottom support piece (15) is set at the bottom end of the side rod (14), and a groove (16) is set on the side wall at the bottom end of the side rod (14).

2. The gear disassembly tool according to claim 1, characterized in that: Two screw end plates (18) are provided on one side of the main screw sleeve (11). The end of the adjusting screw (3) passes through the screw end plate (18) and the actuating wheel (13) is located between the two screw end plates (18).

3. The gear disassembly tool according to claim 1, characterized in that: The side rod (14) is provided with an external thread and a secondary threaded sleeve (17) is threadedly connected to the side rod (14). A pressure plate (12) is provided at the bottom end of the secondary threaded sleeve (17), and the diameter of the pressure plate (12) is larger than the diameter of the secondary threaded sleeve (17).

4. A gear disassembly tool according to claim 1, characterized in that: The main screw (4) has a cone (5) at its bottom end and a handle (7) at its top end, with a hexagonal protrusion (8) at the center of the handle (7).

5. A gear disassembly tool according to claim 4, characterized in that: The upper part of the main screw (4) is provided with a limiting ring (6). When the limiting ring (6) contacts the main screw sleeve (11), the bottom end of the cone (5) and the bottom surface of the support plate (15) are in the same plane.

6. A gear disassembly tool according to claim 1, characterized in that: The center lines of the main screw (4) and the two side rods (14) are located in the same vertical plane.

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