Dismounting tool for bearing outer ring

Abstract

The dismounting tool comprises a rod part and a movable part, the movable part is hinged to one side of the rod part, an impact part is arranged on the other side of the rod part, a sliding block is movably arranged on the outer wall of the rod part, and during installation, the movable part moves towards a bearing; one end of the outer side of the movable part abuts against the inner ring of the bearing and rotates, so that the movable part passes through the bearing; and then the movable part is pulled back, one end of the inner side of the movable part abuts against the bearing and enables the movable part to reset, and meanwhile the inner side of the movable part abuts against the end face of the outer side of the bearing. When the dismounting tool is used, the dismounting operation can be completed through impact generated by interaction of the shifting sliding block and the impact part, by means of drawing operation, the number of parts is small, operation is easy, the dismounting speed is high, and shaking generated in the dismounting process generally does not affect accurate positioning of the movable part.

Description

Technical Field

[0001] The present application relates to the technical field of bearings, and in particular to a disassembly tool for a bearing outer ring. Background Art

[0002] Bearings are important transmission parts. Considering that it is more convenient and quick to repair and replace bearings, it is generally necessary to use bearing removal tools to disassemble the bearings, such as pullers.

[0003] In the prior art, a puller is generally used to disassemble the outer ring of a larger bearing, such as the outer ring of a centrifuge spiral bearing; while a pad is generally used to pass through a screw rod and a pressure plate to disassemble the outer ring of a small bearing. During the disassembly process, the nut on the screw rod is pulled out by rotating it, which is time-consuming, labor-intensive and labor-intensive. Summary of the invention

[0004] The purpose of the present application is to provide a disassembly tool for a bearing outer ring that is easy to operate.

[0005] In order to achieve the above purpose, the technical solution adopted in the present application is: a disassembly tool for the outer ring of a bearing, comprising a rod and a movable part, the movable part is hingedly connected to one side of the rod, and the other side of the rod is provided with an impact part, and the outer wall of the rod is movably provided with a slider, and during installation, the movable part moves toward the bearing until one end of the outer side of the movable part abuts against the inner ring of the bearing and rotates to allow the movable part to pass through the bearing; then the movable part is pulled back, and the inner end of the movable part abuts against the bearing to reset the movable part, and at the same time, the inner side of the movable part abuts against the outer end face of the bearing.

[0006] The movable part comprises a movable backing plate and an articulated seat, and the articulated seat is installed at the end of the rod part.

[0007] The rod portion comprises a connecting rod and an extension rod, and an extension nut is provided at the connection between the connecting rod and the extension rod to threadably connect and fix the two.

[0008] The movable pad is detachably mounted on the hinge seat.

[0009] A fixing nut and a fixing bolt are arranged between the movable pad and the hinge seat, and the movable pad is limitedly mounted on the hinge seat by the fixing nut and the fixing bolt.

[0010] At least one side of the outer end of the movable pad is provided with a guide surface. During installation, one side of the guide surface acts on the upper end or the lower end corresponding to the inner ring of the bearing to rotate the movable pad.

[0011] A limiting portion is arranged in the middle of the inner end of the movable pad, and the limiting portion rotates with the movable pad and abuts against the rod portion when the movable pad moves to its maximum rotation angle.

[0012] The two ends of the hinge seat on one side facing the rod portion are provided with an oblique angle of angle a, and the outer side of the limiting portion is an inclined surface with an angle b, wherein 30°≤a≤60°, and the numerical range of b is a±5°.

[0013] The outer end of the rod is threadedly connected to a limit nut, the limit nut forms the impact portion, and the limit nut is suitable for directly stopping the sliding of the slider when the slider moves to the outer end of the rod.

[0014] Both ends of the slider are rounded.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] This application uses a pulling operation, which uses fewer parts, is simple to operate, and has a fast disassembly speed. After installation, the entire wall surface of the movable part abuts against the inner ring of the bearing. Compared with direct knocking, the interaction area between the movable part and the bearing is larger, so the disassembly quality of the outer ring of the bearing can be guaranteed to the greatest extent, effectively avoiding damage to the surface of the outer ring of the spiral bearing caused by other disassembly methods. In addition, during the impact process, due to the large contact area, the shaking generated during the process generally does not affect the precise positioning of the movable part. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the utility model.

[0018] Figure 2 yes Figure 1 Front view of .

[0019] Figure 3 This is a state diagram of the disassembly tool when it is working.

[0020] Figure 4 It is a schematic diagram of the disassembly tool at the maximum rotation angle.

[0021] Figure 5 It is a cross-sectional view of part of the structure at the extended nut.

[0022] Figure 6 yes Figure 1 Top view of the .

[0023] In the figure: 1. movable part; 2. connecting rod; 3. extension nut; 4. sliding block; 5. limiting part; 6. hinge seat; 7. extension rod; 8. limiting nut; 9. guide surface; 10. bearing body; 11. fixing nut; 12. fixing bolt; 13. movable pad. DETAILED DESCRIPTION

[0024] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0027] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0028] Example:

[0029] Reference Figure 1-6 As shown, this embodiment provides a disassembly tool for the outer ring of a bearing, comprising a rod and a movable part 1, wherein the movable part 1 is hingedly connected to one side of the rod, and an impact part is provided on the other side of the rod. A slider 4 is movably provided on the outer wall of the rod. When installing, the movable part 1 moves toward the bearing until one end of the outer side of the movable part 1 abuts against the inner ring of the bearing and rotates. At this time, Figure 3 As shown in (a) and (b), the moving part 1 continues to move so that the moving part 1 passes through the bearing. Figure 3 (c) as shown; then pull back the movable part 1, the inner end of the movable part 1 abuts against the bearing and the movable part 1 is reset, and at the same time the inner side of the movable part 1 abuts against the outer end face of the bearing. Figure 3As shown in (d). In this embodiment, the movable part 1 can be simply passed through the inner ring of the bearing during installation by rotating it, and the movable part 1 can be pulled back to make the movable part 1 abut against the inner ring of the bearing and the outer ring rib of the bearing body 10. At this time, the slider 4 is pulled to make the slider 4 collide with the impact part. At this time, the kinetic energy is converted, and one side of the movable part 1 can impact the bearing, so that the inner ring and outer ring of the bearing body 10 are separated, thereby completing the disassembly.

[0030] Compared with the prior art that uses structures such as claws to cooperate with the bearing for positioning, this embodiment can more simply and accurately position the movable part 1 through the design of a rotatable movable part, and uses a pulling operation, which uses fewer parts, is simple to operate, and has a fast disassembly speed; after installation, the entire wall surface of the movable part 1 is against the inner ring of the bearing. Compared with direct knocking, the interaction area between the movable part 1 and the bearing is larger, so the disassembly quality of the outer ring of the bearing can be guaranteed to the greatest extent, and the damage to the outer ring surface of the spiral bearing caused by other disassembly methods during the disassembly process is effectively avoided. In addition, due to the large contact area during the impact process, the shaking generated during the process generally does not affect the precise positioning of the movable part 1.

[0031] The disassembly tool in this embodiment is mainly used to disassemble the outer ring of the spiral bearing of the centrifuge. According to the previous disassembly methods and experience of the outer ring of the spiral bearing, the outer ring of the spiral bearing of a larger centrifuge is usually disassembled by a puller; while the outer ring of the spiral bearing of a small centrifuge is usually disassembled by a pad through a screw rod and a pressure plate, and the nut on the screw rod is pulled during the disassembly process. When the above-mentioned disassembly tool is used for disassembly, it has the disadvantages of being time-consuming, labor-intensive, and labor-intensive during the installation, positioning, and disassembly process. When the disassembly tool of this embodiment is used, the installation and positioning process can be completed by rotating and pulling back the movable part 1, and the disassembly operation can be completed by the impact generated by the interaction between the slider 4 and the impact part during disassembly.

[0032] Among them, Figure 2 As shown, the movable part 1 includes a movable pad 13 and an articulated seat 6, and the articulated seat 6 is installed at the end of the rod. In order to make the disassembly tool suitable for use, the rod includes a connecting rod 2 and an extension rod 7. The connection between the connecting rod 2 and the extension rod 7 is provided with an extension nut 3 to thread and fix the two. The slider 4 is generally arranged on the extension rod 7. The extension rod 7 determines the moving stroke of the slider 4. When the operator moves the slider 4 to make it have an initial velocity, a certain stroke is required. If the stroke is too short, the final impact force of the slider 4 will be small, and only smaller bearings can be disassembled; through the design of the extension nut 3, the extension rod 7 can be replaced as needed to facilitate actual operation.

[0033] The movable pad 13 of this embodiment is preferably designed to be detachably mounted on the hinge seat 6. Since the bearings to be disassembled are of different specifications, in order to facilitate the adaptation to bearings of different specifications, the movable pad 13 is detachable and can be disassembled and replaced with movable pads 13 of different sizes as needed, that is, the disassembly of bearings of different specifications can be completed. Figure 6 As shown, a fixing nut 11 and a fixing bolt 12 are arranged between the movable pad 13 and the hinge seat 6, and the movable pad 13 is limitedly mounted on the hinge seat 6 by the fixing nut and the fixing bolt 12. Of course, the detachable mode can also be replaced as needed to achieve the same technical effect.

[0034] like Figure 3 As shown, at least one side of the outer end of the movable pad 13 is provided with a guide surface 9. During installation, one side of the guide surface 9 acts on the upper end or the lower end corresponding to the inner ring of the bearing to cause the movable pad 13 to rotate. Figure 3 The middle guide surface 9 is provided on both sides. Figure 3 The schematic diagram is a diagram of installing the movable pad 13 by using the guide surface 9 at the bottom to abut against the inner ring of the bearing and make the movable pad 13 rotate. In actual use, the appropriate method of use can be selected according to needs. Figure 2 The cross section shown is approximately an isosceles trapezoid. In fact, as long as the inner wall of the movable pad 13 can be stably fitted with the bearing body 10, the movable pad 13 can also be replaced with other shapes.

[0035] like Figure 4 As shown, a limiting portion 5 is provided in the middle of the inner end of the movable pad 13, and the limiting portion 5 rotates with the movable pad 13, and contacts the rod when the movable pad 13 moves to its maximum rotation angle. Specifically, the two ends of the hinged seat facing the rod are provided with an angle of a, and the outer side of the limiting portion 5 is an inclined surface with an angle of b, wherein the preferred angle ranges of a and b are as follows: 30°≤a≤60°, and the numerical range of b is a±5°. The design of the bevel helps to reduce the overall weight of the disassembly tool, so that it is convenient to hold during actual use; the bevel corresponds to the bevel, and when the maximum rotation angle is reached, the bevel can relatively smoothly allow the bevel of the limiting portion 5 to contact the outer wall of the rod, and at the same time, such a design of a bevel and an angle is also suitable for aesthetic requirements.

[0036] The outer end of the rod is threadedly connected with a limit nut 8, which forms a collision portion. The limit nut 8 is suitable for stopping the sliding block 4 from sliding directly when the sliding block 4 moves to the outer end of the rod.

[0037] In order to facilitate the movement of the handheld slider 4, both ends of the slider 4 are rounded. Since the slider 4 needs to be moved by a person to give it an initial velocity during use, the rounded corners are designed to ease the interaction between the slider 4 and the palm.

[0038] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A disassembly tool for a bearing outer ring, characterized in that: It comprises a rod and a movable part, wherein the movable part is hingedly connected to one side of the rod, the other side of the rod is provided with a striking part, and the outer wall of the rod is movably provided with a sliding block. During installation, the movable part moves toward the bearing until one end of the outer side of the movable part abuts against the inner ring of the bearing and rotates to allow the movable part to pass through the bearing; then the movable part is pulled back, and one end of the inner side of the movable part abuts against the bearing to reset the movable part, while the inner side of the movable part abuts against the outer end face of the bearing.

2. The bearing outer ring removal tool according to claim 1, characterized in that: The movable part comprises a movable backing plate and an articulated seat, and the articulated seat is installed at the end of the rod part.

3. The bearing outer ring removal tool according to claim 2, characterized in that: The rod portion comprises a connecting rod and an extension rod, and an extension nut is provided at the connection between the connecting rod and the extension rod to threadably connect and fix the two.

4. The bearing outer ring removal tool according to claim 2 or 3, characterized in that: The movable pad is detachably mounted on the hinge seat.

5. The bearing outer ring removal tool according to claim 4, characterized in that: A fixing nut and a fixing bolt are arranged between the movable pad and the hinge seat, and the movable pad is limitedly mounted on the hinge seat by the fixing nut and the fixing bolt.

6. The bearing outer ring removal tool according to claim 5, characterized in that: At least one side of the outer end of the movable pad is provided with a guide surface. During installation, one side of the guide surface acts on the upper end or the lower end corresponding to the inner ring of the bearing to rotate the movable pad.

7. The bearing outer ring removal tool according to claim 5, characterized in that: A limiting portion is arranged in the middle of the inner end of the movable pad, and the limiting portion rotates with the movable pad and abuts against the rod portion when the movable pad moves to its maximum rotation angle.

8. The bearing outer ring removal tool according to claim 7, characterized in that: The two ends of the hinge seat on one side facing the rod portion are provided with an oblique angle of angle a, and the outer side of the limiting portion is an inclined surface with an angle b, wherein 30°≤a≤60°, and the numerical range of b is a±5°.

9. The bearing outer ring removal tool according to claim 1, characterized in that: The outer end of the rod is threadedly connected to a limit nut, the limit nut forms the impact portion, and the limit nut is suitable for directly stopping the sliding of the slider when the slider moves to the outer end of the rod.

10. The bearing outer ring removal tool according to claim 1, characterized in that: Both ends of the slider are rounded.

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