Special tool for disassembling bearing inner ring in narrow space

Abstract

The utility model discloses a special tool for dismounting a bearing inner ring in a narrow space, which comprises a tool bolt, a dismounting tool main body and a smooth pressing block, the dismounting tool main body is connected with a shaft through a circular arc claw hook, the tool bolt penetrates through a circular hole of the dismounting tool main body and is connected with the smooth pressing block, and the tool bolt transmits pressure to the shaft through the smooth pressing block. And the shaft is ejected out of the bearing inner ring. According to the tool bolt, downward pressure is transmitted to the shaft through the smooth surface sliding block, the tool bolt is not prone to damage, and the smooth surface pressing block is very convenient to replace. And downward pressure is transmitted to the shaft through the smooth-surface sliding block, so that the device is very suitable for replacing the bearing inner ring in a narrow space, simple in structure and convenient to operate, and can be suitable for shafts with different diameters by replacing the smooth-surface pressing block.

Description

Technical Field

[0001] The utility model relates to the field of part disassembly, and particularly relates to a special tool for disassembling the inner ring of a bearing in a narrow space. Background Technique

[0002] The inner ring of a bearing, also known as the inner sleeve or inner ring, is a basic component of a rolling bearing. It is usually fixed on the journal and rotates with the shaft. There is a type of assembly where the inner ring of the bearing that fits with the shaft needs to be removed from a narrow space during the disassembly process. Due to the small disassembly space, it can only be scrapped or forcefully removed. A special tool is designed to solve the disassembly problem for the situation where components are scrapped after each disassembly. Through retrieval, no technical solution identical to the utility model was found, only some relevant comparative technical documents were found, mainly including the following:

[0003] 1. The patent with the application number 202321306427.5 discloses a special tool for disassembling the inner ring of a torque converter bearing of a 3-ton loader. It includes two support plates, two stepped bolts, four nuts, a support sleeve, a central bolt, and two bolts. The support plate can effectively support the lower end face of the inner ring of the bearing when disassembling the inner ring of the bearing. The support sleeve and the two support plates are locked into a whole through the stepped bolts and nuts. The step limit of the stepped bolt ensures a small gap between the support sleeve and the support plate. The bolt holes for connecting the support plate and the support sleeve are long slot holes, enabling the support plate and the support sleeve to move relative to each other. The support sleeve is in the shape of a hat, and a threaded hole for cooperating with the central bolt is provided at the center of the hat top, and bolt holes for bolt connection with the support plate are provided at the brim. The two support plates are connected by bolts and nuts. This patent pulls the inner ring of the bearing out of the turbine shaft by tightening the central bolt with a wrench or an electric air gun, which is likely to damage the inner ring of the bearing.

[0004] 2. The patent with the application number 202122410431.3 proposes a device for disassembling the inner ring of an Atlas main engine bearing, including a base. A top plate is arranged at the upper end of the base. Both ends of the outer wall of the top of the base are fixedly connected with support plates. The top ends of the support plates are fixedly connected with the outer wall of the bottom of the top plate. A clamping assembly is arranged on the support plates, and an extrusion assembly is fixed on the top plate. This patent has a complex structure, involves multiple components, and is not easy to install.

[0005] 3. The patent with the application number 201611124422.5 provides a dismounting device for the inner ring of an angular contact ball bearing, which includes a top plate, a ejector rod, a bushing and a pin rod. There is a mounting hole with internal threads in the middle of the top plate, and a bolt hole is provided at each end. The ejector rod is installed in the mounting hole by threads. The bushing has threaded holes at both ends and an inner hole in the middle. Each bolt hole and the threaded hole are fixedly connected by bolts. There are pin holes in the middle of the two threaded holes and the inner hole respectively, and the pin rod is inserted into the pin hole. This patent separates the inner ring of the bearing from the shaft by rotating the ejector rod. The ejector rod is in direct contact with the shaft, which is easy to be damaged and not easy to be repaired after damage.

[0006] Through the analysis of the above patent, it can be found that although the current dismounting device for the inner ring of the bearing can disassemble the inner ring of the bearing without damage, its dismounting device is easy to be damaged and not suitable for disassembling the inner ring of the bearing in a narrow space. Therefore, the problems described above still exist, so it is very necessary to improve this. Utility Model Content

[0007] The technical problem to be solved by the present utility model is to provide a special tooling for disassembling the inner ring of a bearing in a narrow space, which can not only disassemble the inner ring of the bearing without damage, but also its dismounting device is not easy to be damaged and is suitable for disassembling the inner ring of the bearing in a narrow space; in addition, its structure is simple and the operation is convenient.

[0008] The technical solution proposed by the present utility model is: a special tooling for disassembling the inner ring of a bearing in a narrow space, which includes a tooling bolt, a dismounting tooling main body, and a smooth surface pressing block. The dismounting tooling main body adopts an arc-shaped hook connecting shaft, and the connection between the dismounting tooling main body and the shaft is more stable, and it can well provide support force and fixing effect during the process of rotating and pressing down the tooling bolt. The tooling bolt passes through the round hole of the dismounting tooling main body and connects the smooth surface pressing block. The tooling bolt transmits pressure to the shaft through the smooth surface pressing block, and ejects the shaft from the inner ring of the bearing.

[0009] Further, the smooth surface pressing block is cylindrical, and there is a round hole above the smooth surface pressing block that is adapted to the diameter of the lower end of the tooling bolt, and there is a thread in the round hole that is adapted to the tooling bolt.

[0010] Further, the diameter of the smooth surface pressing block is larger than the inner diameter of the shaft and smaller than the outer diameter of the shaft.

[0011] Further, the smooth surface pressing block is detachably connected to the dismounting tooling main body, and once the smooth surface pressing block is damaged, it can be repaired by replacing the smooth surface pressing block.

[0012] Further, there is a round hole above the tooling bolt for driving the tooling bolt to rotate by a pneumatic wrench and pressing down the smooth surface pressing block.

[0013] Further, there is a relief groove at the connecting part of the tooling bolt and the smooth surface pressing block, which can avoid the thread of the smooth surface pressing block, and the tooling bolt below the relief groove is provided with a thread adapted to the round hole of the smooth surface pressing block.

[0014] Further, the diameter of the round hole above the main body of the disassembly tooling is equal to the diameter of the middle part of the tooling bolt.

[0015] Further, the main body of the disassembly tooling and the arc-shaped hook are connected by welding.

[0016] Further, the grasping radian of the arc-shaped hook on the main body of the disassembly tooling is a semi-circle.

[0017] Further, the center of the round hole on the main body of the disassembly tooling is aligned with the center of the semi-circle of the grasping radian of the arc-shaped hook.

[0018] The beneficial effects of the utility model are as follows: (1) The tooling bolt transmits the downward pressure to the shaft through the smooth surface slider, and the tooling bolt is not easily damaged, and the replacement of the smooth surface pressing block is very convenient. (2) Transmitting the downward pressure to the shaft through the smooth surface slider is very suitable for replacing the inner ring of the bearing in a narrow space. (3) The structure is simple and the operation is convenient. (4) By replacing the smooth surface pressing block, it can be applicable to shafts with different diameters. Description of the Drawings

[0019] Figure 1 Schematic structural diagram of a special tooling for disassembling the inner ring of a bearing in a narrow space;

[0020] Figure 2 Schematic structural diagram of the main body of the disassembly tooling;

[0021] Figure 3 Top view of the main body of the disassembly tooling;

[0022] Explanation of the reference numerals in the drawings: 1. Tooling bolt; 2. Main body of the disassembly tooling; 3. Smooth surface pressing block; 4. Inner ring of the bearing; 5. Shaft; 6. Arc-shaped hook; 7. Round hole. Detailed Embodiment

[0023] The following will further describe the present utility model in conjunction with the drawings.

[0024] A special tooling for disassembling the inner ring of a bearing in a narrow space, as shown in the attached Figures 1 to 3As shown in the figure, the specific structure is as follows: A special tooling for disassembling the inner ring of a bearing in a narrow space, including a tooling bolt 1, a disassembly tooling main body 2, a smooth surface pressing block 3. The disassembly tooling main body 2 is connected to the shaft 5 by an arc-shaped hook 6, and the connection between the disassembly tooling main body 2 and the shaft 5 is more stable, which can well provide support force and fixing effect during the rotation and downward pressing of the tooling bolt 1. The tooling bolt 1 passes through the round hole 7 of the disassembly tooling main body 2 and is connected to the smooth surface pressing block 3. The tooling bolt 1 transmits pressure to the shaft 5 through the smooth surface pressing block 3, and ejects the shaft 5 from the bearing inner ring 4.

[0025] Further, the smooth surface pressing block 3 is cylindrical. There is a round hole above the smooth surface pressing block 3 that is adapted to the lower end diameter of the tooling bolt 1, and there is a thread adapted to the tooling bolt 1 in the round hole.

[0026] Further, the diameter of the smooth surface pressing block 3 is larger than the inner diameter of the shaft 5 and smaller than the outer diameter of the shaft 5.

[0027] Further, the smooth surface pressing block 3 is detachably connected to the disassembly tooling main body 2. Once the smooth surface pressing block 3 is damaged, it can be repaired by replacing the smooth surface pressing block 3.

[0028] Further, there is a round hole above the tooling bolt 1 for driving the tooling bolt 1 to rotate by a pneumatic wrench and pressing down the smooth surface pressing block 3.

[0029] Further, there is a relief groove at the connection part between the tooling bolt 1 and the smooth surface pressing block 3, which can avoid the thread of the smooth surface pressing block 3. The tooling bolt 1 below the relief groove is provided with a thread adapted to the round hole of the smooth surface pressing block 3.

[0030] Further, the diameter of the round hole 7 above the disassembly tooling main body 2 is equal to the diameter of the middle part of the tooling bolt 1.

[0031] Further, the disassembly tooling main body 2 and the arc-shaped hook 6 are connected by welding.

[0032] Further, the grasping arc of the arc-shaped hook 6 on the disassembly tooling main body 2 is a semi-circle.

[0033] Further, the grasping arc of the arc-shaped hook 6 on the disassembly tooling main body 2 is a semi-circle plus a straight line segment.

[0034] Further, the grasping arc of the arc-shaped hook 6 on the disassembly tooling main body 2 is a semi-circle plus a straight line segment.

[0035] Further, the center of the round hole 7 on the disassembly tooling main body 2 is aligned with the center of the semi-circle of the grasping arc of the arc-shaped hook 6.

[0036] When disassembling, first install the main body 2 of the disassembly tooling. Connect the circular arc-shaped hook 6 at the lower end of the main body 2 of the disassembly tooling to the shaft 5. Then, pass the tooling bolt 1 through the upper circular hole 7 of the disassembly tooling. Select the corresponding smooth surface pressing block 3, connect it to the tooling bolt 1 and place it on the shaft 5. Drive the rotation of the tooling bolt 1 through a pneumatic wrench. The main body 2 of the disassembly tooling presses down the smooth surface pressing block 3, and the smooth surface pressing block 3 presses down the shaft 5, ejecting the shaft 5 from the inner ring 4 of the bearing. Pull up the tooling bolt 1, and then take out the inner ring 4 of the bearing.

[0037] The beneficial effects of the present utility model are as follows: (1) The tooling bolt 1 transmits the downward pressure to the shaft 5 through the smooth surface slider, and the tooling bolt 1 is not easily damaged, and the replacement of the smooth surface pressing block 3 is very convenient. (2) Transmitting the downward pressure to the shaft 5 through the smooth surface slider is very suitable for replacing the inner ring 4 of the bearing in a narrow space. (3) The structure is simple and the operation is convenient.

[0038] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model are included in the protection scope of the present utility model.

Claims

1. A special tool for disassembling the inner ring of a bearing in a narrow space, characterized by: The utility model comprises a tool bolt (1), a disassembly tool body (2), and a smooth pressure block (3). The disassembly tool body (2) adopts an arc-shaped hook (6) to connect the shaft (5). The tool bolt (1) passes through a circular hole (7) of the disassembly tool body (2) to connect the smooth pressure block (3). The tool bolt (1) transmits pressure to the shaft (5) through the smooth pressure block (3), so as to push the shaft (5) out of the inner ring (4) of the bearing.

2. A special tool for disassembling the inner ring of a bearing in a narrow space as claimed in claim 1, characterized in that: The smooth pressing block (3) is cylindrical, and has a circular hole on the top of the smooth pressing block (3) that matches the diameter of the lower end of the tooling bolt (1), and a thread that matches the tooling bolt (1) is provided in the circular hole.

3. The special tool for disassembling the inner ring of a bearing in a narrow space as claimed in claim 1, characterized in that: The diameter of the smooth pressing block (3) is larger than the inner diameter of the shaft (5) and smaller than the outer diameter of the shaft (5).

4. The special tool for disassembling the inner ring of a bearing in a narrow space as claimed in claim 1, characterized in that: The smooth surface pressing block (3) is detachably connected to the disassembly tool body (2); once the smooth surface pressing block (3) is damaged, it can be repaired by replacing the smooth surface pressing block (3).

5. The special tool for disassembling the inner ring of a bearing in a narrow space as claimed in claim 1, characterized in that: A round hole is provided above the tooling bolt (1) for driving a pneumatic wrench to rotate the tooling bolt (1) and press down the smooth surface pressing block (3).

6. The special tool for disassembling the inner ring of a bearing in a narrow space as claimed in claim 1, characterized in that: The connection portion between the tool bolt (1) and the smooth pressing block (3) is provided with a back-cut groove, which can avoid the thread of the smooth pressing block (3); the tool bolt (1) below the back-cut groove has a thread that matches the round hole of the smooth pressing block (3).

7. The special tool for disassembling the inner ring of a bearing in a narrow space as claimed in claim 1, characterized in that: The diameter of the circular hole (7) above the disassembly tool body (2) is equal to the diameter of the middle part of the tool bolt (1).

8. The special tool for disassembling the inner ring of a bearing in a narrow space as claimed in claim 1, characterized in that: The disassembly tool body (2) is connected to the arc-shaped grab hook (6) by welding.

9. The special tool for disassembling the inner ring of a bearing in a narrow space as claimed in claim 1, characterized in that: The arc-shaped grabbing hook (6) on the disassembly tool body (2) has a grabbing arc of a semicircle or a semicircle plus a straight line segment.

10. The special tool for disassembling the inner ring of a bearing in a narrow space as claimed in claim 1, characterized in that: The center of the circular hole (7) on the disassembly tool body (2) is aligned with the center of the semicircle of the grabbing arc of the arc-shaped grab hook (6).

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