CN217915103U

CN217915103U - Bearing disassembling tool

Info

Publication number: CN217915103U
Application number: CN202221794257.5U
Authority: CN
Inventors: 柯磊; 邱娟; 邢林林; 李志平; 陈童鑫; 沈雅丽
Original assignee: ANHUI TONGHUA NEW ENERGY POWER CO LTD
Current assignee: ANHUI TONGHUA NEW ENERGY POWER CO LTD
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-11-29
Anticipated expiration: 2032-07-11

Abstract

The utility model provides a bearing extracting tool, the dismantlement effort of applying on the bearing end face is the little load of equipartition of face contact. The bearing assembling device is characterized in that the opening of the notch part on the assembling side of the bearing to be assembled is assembled on the end surface of the inner ring and the outer ring of the bearing to be assembled along the horizontal line, the left side and the right side of the thread ejector rod are provided with a first pull rod, a second pull rod, and the thread ejector rod, the first pull rod and the second pull rod which are parallel to each other are arranged in a coplanar manner, and the first pull rod, the second pull rod, the support plate and the support plate are matched with each other in a manner of limiting the separation of the support plate and the support plate in a distance increasing manner. Because the supporting plate is in surface contact with the end face of one side of the bearing to be disassembled, the end faces of the same sides of the inner ring and the outer ring of the bearing are simultaneously stressed, so that the force acting on the end faces of the same sides of the inner ring and the outer ring of the bearing is small, the pressure is uniformly distributed, the bearing retainer cannot be damaged, and the balls between the bearing retainer and the bearing retainer can be ensured to be safe and lossless.

Description

Bearing disassembling tool

Technical Field

The utility model relates to a bearing extracting tool, the bearing extracting tool on the axle type part who specifically says and be applicable to electric motor rotor axle and so on.

Background

A bearing is arranged between the shaft part and the bearing seat, and the shaft part is rotatably supported to reduce the rotating friction. The bearing needs to be detached from the shaft due to damage of related parts caused by various reasons, the most common tool is the puller, and three hitching claws of the puller are usually hooked on a retainer of the bearing, so that the bearing is quite often damaged further in the detaching process, namely, the puller is not suitable for detaching the bearing which is still intact originally.

The technical scheme disclosed by the name of 'a bearing dismounting device of a motor rotor' (CN 111360758A) is that a U-shaped hole 205 is formed in one surface of a bottom plate 2, and the inner wall of the U-shaped hole 205 is matched with the peripheral side face of a motor shaft 101. As shown in the drawings of the comparison documents, a bearing 102 is sleeved on the peripheral side of a motor shaft 101, a base plate 2 is located on one side of the bearing 102, a boss 206 is fixedly connected to one side of the base plate 2 close to the bearing 102, one side of the boss 206 is attached to the side of the bearing 102, the diameter of the cross-section circle of the boss 206 is smaller than the outer diameter of the inner ring of the bearing and ranges from 1cm to 2cm, it is ensured that only the inner ring of the bearing is stressed in the dismounting process, the outer ring of the bearing and the rolling body are not stressed, and the precision of the bearing is not affected after the dismounting. Because one side end face of the bearing 102 is positioned at the reducing step of the large-diameter shaft section and the small-diameter shaft section of the motor shaft 101, the opening width of the U-shaped hole 205 is at least slightly larger than the shaft diameter of the large-diameter shaft section of the step shaft, the diameter of the cross-section circle of the boss 206 is also smaller than the outer diameter of the inner ring of the bearing, the boss 206 is independently arranged, the processing workload is increased, the actual contact area between the boss 206 and the end face of the inner ring of the bearing is small, the local small area of the end face of the inner ring of the bearing bears the action of large pressure, and the end face of the inner ring of the bearing is seriously crushed and damaged in severe cases.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bearing extracting tool, the dismantlement effort of applying on the bearing end face is the little load of equipartition of face contact.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a bearing extracting tool, includes interval arrangement's mounting panel and support plate, is connected with the screw thread ejector pin in the screw hole at mounting panel middle part, has offered breach portion on the curb plate edge of support plate, and breach portion encloses the orientation of lining up of putting the region and lies in the extending direction of screw thread ejector pin, its characterized in that: with wait to dismantle the regional parallel and level laminating of mouthful edge of the breach portion of bearing laminating side in waiting to dismantle the bearing, on the outer lane terminal surface, first pull rod, second pull rod and the screw ejector pin that is parallel to each other, first pull rod, the coplane of second pull rod are arranged to the left and right sides of screw ejector pin, constitute the cooperation that restriction mounting panel and support brace spacing formula separation each other between first pull rod, second pull rod and mounting panel and the support brace.

When the technical scheme is adopted to disassemble the bearing, the threaded mandril is arranged at the end part of the shaft sleeved with the bearing to be disassembled, the support plate is arranged on the side of the end face, far away from the shaft end, of the bearing to be disassembled, the threaded mandril is rotated, the support plate and the pull rod between the support plate and the support plate generate axial displacement relative to the threaded mandril, so that the bearing is driven to move towards the shaft end until the bearing is removed, the bearing retainer cannot be damaged due to the fact that the support plate is in surface contact with the end face of one side of the bearing to be disassembled, the end faces of the same side of the inner ring and the outer ring of the bearing are stressed simultaneously, and due to the fact that the contact area is large, the force acting on the end faces of the same side of the inner ring and the outer ring of the bearing is small in pressure and uniform in load effect, and the balls between the inner ring and the outer ring of the bearing are stressed and synchronously displaced, so that the balls between the inner ring and the outer ring of the bearing are safe and lossless.

Drawings

Fig. 1 is a perspective view of the present invention.

Detailed Description

As shown in fig. 1, the bearing disassembling tool includes a support plate 10 and a support plate 20 which are arranged at an interval, a threaded ejector rod 30 is connected in a threaded hole in the middle of the support plate 10, a notch portion 21 is formed on an edge of a side plate of the support plate 20, a through direction of a region surrounded by the notch portion 21 is located in an extending direction of the threaded ejector rod 30, the through direction is flush with a mouth edge region of the notch portion 21 on a joint side of a bearing to be disassembled and is jointed on end surfaces of an inner ring and an outer ring of the bearing to be disassembled, a first pull rod 40, a second pull rod 50, the threaded ejector rod 30, the first pull rod 40 and the second pull rod 50 which are parallel to each other are arranged on the left side and the right side of the threaded ejector rod 30, and the first pull rod 40 and the second pull rod 50 are arranged in a coplanar manner, and a fit for limiting the support plate 10 and the support plate 20 from being separated from each other in an increasing manner is formed between the first pull rod 40 and the second pull rod 50 and the support plate 10 and the support plate 20.

According to the scheme, when the bearing is disassembled, the threaded ejector rod 30 is arranged at the end part of a shaft sleeved with the bearing to be disassembled in an overhead manner, the support plate 20 is clamped at the end face side of the bearing to be disassembled far away from the shaft end, the threaded ejector rod 30 is rotated, the support plate 10 and the support plate 20 and a pull rod between the support plate and the threaded ejector rod 20 generate axial displacement relative to the threaded ejector rod 30, so that the bearing is driven to move towards the shaft end until the bearing is disassembled, the through direction of a region surrounded by the notch part 21 is positioned in the extending direction of the threaded ejector rod 30, and the notch part 21 is flush with the edge region of the notch part 21 at the joint side of the bearing to be disassembled and is jointed on the end faces of the inner ring and the outer ring of the bearing to be disassembled to form large-area contact, so that the force applied to the bearing is the uniform load effect, and in the disassembling process, because the inner ring and the outer ring of the bearing are simultaneously stressed and synchronously displaced, the balls between the support plate 20 are safe and undamaged, and the ball retainer is not pressed in the disassembling process, so that the undamaged integrity of the retainer is ensured.

In addition, because the first pull rod 40 and the second pull rod 50 are arranged between the support plate 10 and the support plate 20 and positioned at the left side and the right side of the threaded mandril 30, the number of parts is small, and the tool is obviously convenient to carry or transport.

The notch 21 is U-shaped. The supporting plate 20 is clamped on the bearing through the U-shaped notch, so that the contact area between the supporting plate and the inner ring of the bearing is increased.

Preferably, the notch 21 is a U-shape with a semicircular bottom, which can have a larger contact area with the bearing, and the end surface area of the semicircular area of the supporting plate 20 provides a semicircular contact area to contact with the bearing, further reducing the load pressure.

The connection scheme of the first and second tie rods 40 and 50 with the support plate 10 and the bracing plate 20 will be described in detail below.

In the first scheme, the first pull rod 40 and the second pull rod 50 are fixedly connected with the supporting plate 20 and the support plate 10 respectively.

The technical scheme is suitable for the condition that a large number of bearings with the same specification on a motor shaft need to be disassembled, namely, the size of the bearing is determined, the distance from the bearing to the shaft end is determined, and the shaft diameter of the large shaft diameter section of the step shaft at the position of the bearing limiting stop is determined.

In the second scheme, the first pull rod 40 and the second pull rod 50 are fixedly connected with the support plate 10, respectively, and the first pull rod 40 and the second pull rod 50 penetrate through the unthreaded holes on the support plate 20 and are connected with the first fixing nut 42 and the second fixing nut 52 on the rod end positioned outside the support plate 20.

This scheme is convenient to be changed and is held in the palm fagging 20 in order to provide the size of a dimension of suitable breach portion 21 to and conveniently adjust the distance between mounting panel 10 and the support brace 20, this scheme two is suitable for the bearing size, the bearing to be adopted apart from the distance of axle head and the condition that there is the change in the big footpath section diameter of step axle of the spacing fender department of bearing.

And in the third scheme, the first pull rod 40 and the second pull rod 50 penetrate through the unthreaded holes in the support plate 10, the threaded rod bodies of the first pull rod 40 and the second pull rod 50 which are positioned on the outer side of the support plate 10 are connected with a first limiting nut 41 and a second limiting nut 51, and the first pull rod 40 and the second pull rod 50 penetrate through the unthreaded holes in the support plate 20 and are positioned on the rod end on the outer side of the support plate 20 and are connected with a first fixing nut 42 and a second fixing nut 52. The scheme has the same function as the second scheme, and in addition, the first pull rod 40, the second pull rod 50, the support plate 10 and the support plate 20 can be completely separated from each other, so that the storage and the carrying are convenient.

Claims

1. The utility model provides a bearing extracting tool, includes mounting panel (10) and the brace plate (20) of interval arrangement, is connected with screw thread ejector pin (30) in the screw hole at mounting panel (10) middle part, and breach portion (21) have been seted up to a curb plate edge of brace plate (20), and the orientation of lining up of the region of putting is located the extending direction of screw thread ejector pin (30) in breach portion (21) enclose, its characterized in that: with the mouthful along regional parallel and level laminating of breach portion (21) of waiting to dismantle the bearing laminating side in waiting to dismantle the bearing, on the outer lane terminal surface, first pull rod (40) have been arranged to the left and right sides of screw ejector pin (30), screw ejector pin (30) that second pull rod (50) and be parallel to each other, first pull rod (40), second pull rod (50) coplane is arranged, constitute between first pull rod (40), second pull rod (50) and mounting panel (10) and brace plate (20) and restrict mounting panel (10) and brace plate (20) the cooperation of the formula separation that becomes big of interval each other.

2. The bearing removal tool of claim 1, wherein: the notch part (21) is U-shaped.

3. The bearing removal tool of claim 2, wherein: the notch part (21) is in a U shape with a semicircular bottom.

4. The bearing removal tool of claim 1, wherein: the first pull rod (40) and the second pull rod (50) are fixedly connected with the supporting plate (20) and the support plate (10) respectively.

5. The bearing removal tool of claim 1, wherein: the first pull rod (40) and the second pull rod (50) are fixedly connected with the support plate (10) respectively, and the first pull rod (40) and the second pull rod (50) penetrate through the unthreaded holes in the support supporting plate (20) and are positioned on the rod end outside the support supporting plate (20) to be connected with the first fixing nut (42) and the second fixing nut (52).

6. The bearing removal tool of claim 1, wherein: threaded rods of first pull rods (40) and second pull rods (50) which penetrate through unthreaded holes in the support plate (10) and are located on the outer side of the support plate (10) are connected with first limiting nuts (41) and second limiting nuts (51), and the first pull rods (40) and the second pull rods (50) penetrate through unthreaded holes in the support plate (20) and are located on rod ends outside the support plate (20) to be connected with first fixing nuts (42) and second fixing nuts (52).