Bearing dismounting device

Abstract

According to the bearing dismounting device, an elastic assembly is made to abut against different positions of a curve-shaped notch by rotating a rotating shaft, due to the fact that the elastic assembly can drive a clamping jaw to move in the direction close to a box body, when the elastic assembly abuts against the deeper position of the notch, the clamping jaw gets close to the box body under the action of the elastic assembly, and the clamping jaw is clamped in the box body. And the clamping jaw can clamp bearings with different diameters. After the clamping jaw clamps the bearing, the screw rod is rotated, the rotating shaft is in threaded connection with the screw rod, the screw rod can move in the direction close to the roller shaft relative to the rotating shaft, the end, close to the clamping jaw, of the screw rod abuts against the roller shaft, the roller shaft can be pushed out of the bearing by rotating the screw rod, and therefore the roller shaft is separated from the bearing. The clamping jaws of the device can fix bearings with different diameters, and the screw rods can push the roll shafts out of the bearings, so that the bearings can be prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical equipment maintenance field, concretely relates to a bearing dismounting device. BACKGROUND

[0002] In order to keep the equipment stable and prolong the service life of the equipment, the equipment needs to be maintained and repaired regularly, and the dismounting of the rolling bearing is an important and common operation. The conventional dismounting method includes knocking method, and the pressure hole diameter of the traditional rolling mill bearing dismounting device is fixed, can only dismount the bearing of limited diameter, and the bearing needs to be installed into the pressure hole and knocked by external force, which can only be used for dismounting the bearing of specified diameter, and the bearing surface or even the inside of the bearing can be damaged during knocking, especially some bearings applied in high-precision occasions, resulting in that part of the reusable bearings cannot be directly used. SUMMARY

[0003] In order to overcome the defects of the prior art, the utility model provides a bearing dismounting device, which can solve the problem that the existing bearing dismounting device can only be used for dismounting the bearing of specified diameter and is easy to damage the bearing.

[0004] The utility model solves technical scheme adopted by its technical problem: provide a kind of bearing dismounting device, including screw rod, pivot, box body, the pivot sleeve is equipped in the screw rod, and the pivot is connected with the screw rod, the pivot is equipped in the box body;The box body is internally provided with the lifting wheel of being fixedly connected with the pivot, the lifting wheel is provided with at least two notches, each the notch is curve type, at least two elastic components are slidably equipped in the side wall of the box body, one end of the elastic component is abutted with the inner wall of the notch, and the other end is connected with clamping jaw, and the elastic component is used to drive the clamping jaw towards the direction of being close to the box body.

[0005] As a further improvement of the above technical solution, the side wall of the box body has a guide tube, the elastic component includes a top rod and a compression spring, the top rod is inserted into the guide tube and is slidably connected with the guide tube, the compression spring is sleeved on the top rod, and the compression spring is connected between the top rod and the guide tube, and the compression spring is used to drive the top rod to slide relative to the guide tube towards the direction of being close to the box body.

[0006] As a further improvement of the above technical solution, the head is rotatably connected with a roller at an end away from the rod body, and the roller is in rolling connection with the notch.

[0007] As a further improvement of the above technical solution, the head is rotatably connected with a roller at an end away from the rod body, and the roller is in rolling connection with the notch.

[0008] As a further improvement of the above technical solution, the head is rotatably connected with a roller at an end away from the rod body, and the roller is in rolling connection with the notch.

[0009] As a further improvement of the above technical solution, the head is rotatably connected with a roller at an end away from the rod body, and the roller is in rolling connection with the notch.

[0010] As a further improvement of the above technical solution, the head is rotatably connected with a roller at an end away from the rod body, and the roller is in rolling connection with the notch.

[0011] As a further improvement of the above technical solution, the head is rotatably connected with a roller at an end away from the rod body, and the roller is in rolling connection with the notch.

[0012] As a further improvement of the above technical solution, the head is rotatably connected with a roller at an end away from the rod body, and the roller is in rolling connection with the notch.

[0013] As a further improvement of the above technical solution, the head is rotatably connected with a roller at an end away from the rod body, and the roller is in rolling connection with the notch.

[0014] The utility model discloses a beneficial effect is: through the rotation pivot, makes elastic component and the abutment of different position of curve type gap, because elastic component can drive the jaw to the direction of close to the box body movement, when elastic component and the abututment of deeper gap, under the action of elastic component, the jaw is close to the box body, makes the jaw can hold the bearing of different diameter. When the jaw clamps the bearing, rotates the screw rod, because the pivot and the screw rod screw joint, the screw rod can be close to the direction of movement of roller axle relative to the pivot, makes the end of screw rod close to the jaw and the abutment of roller axle, and through the rotation screw rod, can push out roller axle from the bearing, to this realization roller axle and the separation of bearing. The jaw of the device can fix the bearing of different diameter, and its screw rod can push out roller axle from the bearing, can prevent the damage to bearing. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model is further explained below in combination with the drawings and examples.

[0016] Figure 1 It is the structure schematic diagram of bearing dismounting device that the utility model preferred embodiment provides;

[0017] Figure 2 It is the structure schematic diagram of bearing dismounting device that the utility model preferred embodiment provides;

[0018] Figure 3 It is Figure 2 The enlarged view of A part in

[0019] Figure 4 It is Figure 2 The exploded view of part structure;

[0020] Figure 5 It is the sectional view of bearing dismounting device that the utility model preferred embodiment provides.

[0021] Fig. 1, screw rod, 2, pivot, 3, box body;

[0022] Grip lever, 22, flat key, 31, lifting wheel, 32, elastic component, 33, jaw, 34, guide pipe;311, gap, 312, clamping hole, 313, clamping groove, 321, jacking rod, 322, compression spring, 323, head, 324, rod body, 325, roller, 326, supporting lug, 327, connecting hole, 328, second through hole, 331, first abutment block, 332, second abutment block, 341, abutment plate, 342, first through hole. DETAILED DESCRIPTION

[0023] The utility model discloses a concept, concrete structure and the technical effect produced are clearly, completely described below combining with the embodiment and the drawing, to fully understand the purpose, feature and effect of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment, and other embodiments obtained by the person skilled in the art without paying the creative labor based on the embodiment of the utility model, all belong to the protection scope of the utility model. In addition, all the connection / connection relations involved in the patent do not mean that the components directly connect, but can be composed of a better connection structure by adding or reducing the connection auxiliary parts according to the specific implementation situation, for example, fixed connection / fixed installation can be selected according to the need screw connection, bolt connection, pin connection, key connection, bonding, mortise and tenon connection, welding, riveting and the like, and for example, detachable connection can be selected according to the need screw connection, bolt connection, threaded connection, buckle connection, mortise and tenon connection, magic tape connection and the like. The various technical features in the utility model creation can be interactively combined without mutual contradiction and conflict.

[0024] Please see Figure 1 The utility model discloses a bearing dismounting device for dismounting the bearing on the roller shaft, which comprises a screw rod 1, a rotating shaft 2 and a box body 3, the rotating shaft 2 is sleeved on the screw rod 1, and the rotating shaft 2 is screwed with the screw rod 1, the rotating shaft 2 is arranged in the box body 3, and the screw rod 1 can rotate relative to the rotating shaft 2 so that the screw rod 1 abuts against the roller shaft.

[0025] Specifically, please see Figure 2 The box body 3 is internally provided with a lifting wheel 31 fixedly connected with the rotating shaft 2, the lifting wheel 31 is provided with four notches 311, the four notches 311 are all of curved type, four elastic components 32 are slidingly arranged in the side wall of the box body 3, one end of the elastic component 32 abuts against the inner wall of the notch 311, the other end is connected with a clamping jaw 33, and the elastic component 32 is used for driving the clamping jaw 33 to move towards the box body 3. By rotating the rotating shaft 2, the rotating shaft 2 drives the lifting wheel 31 to rotate, so that the elastic component 32 abuts against the notches 311 of different depths of the curved type, and since the elastic component 32 can drive the clamping jaw 33 to move towards the box body 3, when the elastic component 32 abuts against the deeper part of the notch 311, the clamping jaw 33 moves towards the box body 3 under the action of the elastic component 32, so that the clamping jaw 33 can clamp bearings of different diameters. After the clamping jaw 33 clamps the bearing, the screw rod 1 is rotated, the screw rod 1 can move towards the roller shaft relative to the rotating shaft 2 since the rotating shaft 2 is screwed with the screw rod 1, so that the end of the screw rod 1 close to the clamping jaw 33 abuts against the roller shaft, and the roller shaft can be pushed out of the bearing by rotating the screw rod 1, so as to realize the separation of the roller shaft and the bearing.

[0026] Further, the four notches 311, the four elastic assemblies 32 and the four clamping jaws 33 are arranged in a cross shape, and the clamping jaws 33 can clamp the bearing from four directions, so that the bearing is uniformly stressed on all sides, and the bearing is fixed more firmly.

[0027] In other embodiments, the notches, the elastic assemblies and the clamping jaws can also be arranged in two or three, to reduce the cost. Alternatively, the notches, the elastic assemblies and the clamping jaws can be arranged in more than four, and the clamping jaws can clamp the bearing from more than four directions, to further improve the firmness of the clamping jaws 33 and the bearing.

[0028] Please refer to Figure 4 and Figure 5 , the side wall of the box body 3 is provided with a guide pipe 34, the elastic assembly 32 comprises a top rod 321 and a compression spring 322, the top rod 321 is arranged in the guide pipe 34 and is in sliding connection with the guide pipe 34, the compression spring 322 is sleeved on the top rod 321, and the compression spring 322 is connected between the top rod 321 and the guide pipe 34, and the compression spring 322 is used to drive the top rod 321 to slide relative to the guide pipe 34 towards the box body 3. When the rotating shaft 2 drives the lifting wheel 31 to rotate, the top rod 321 is always in abutment with the lifting wheel 31 under the action of the compression spring 322, and the guide pipe 34 is arranged to limit the movement direction of the top rod 321, so as to limit the movement direction of the clamping jaw 33 to be towards or away from the box body 3.

[0029] More specifically, the top rod 321 comprises a head 323 in sliding connection with the inner wall of the guide pipe 34 and a rod body 324 arranged in a gap with the guide pipe 34, and the end of the guide pipe 34 away from the box body is provided with an abutment plate 341, and the abutment plate 341 is provided with a first through hole 342; the head 323 is in abutment with the inner wall of the notch 311, the rod body 324 is arranged in the first through hole 342, and the two ends of the rod body 324 are respectively fixedly connected with the head 323 and the clamping jaw 33, and the compression spring 322 is sleeved on the rod body 324 and located between the head 323 and the abutment plate 341. The compression spring 322 applies a spring force towards the box body 3 to the head 323, so as to always drive the entire top rod 321 to be in abutment with the lifting wheel 31.

[0030] Further, the end of the head 323 away from the rod body 324 is rotatably connected with a roller 325, and the roller 325 is in rolling connection with the notch 311. The arrangement of the roller 325 can reduce the friction between the head 323 and the inner wall of the notch 311, and the resistance is smaller when the rotating shaft 2 drives the lifting wheel 31 to rotate, so that the use is more convenient.

[0031] More specifically, the head 323 is provided with two oppositely arranged lugs 326, each of which is provided with a connecting hole 327, the shaft of the roller 325 is provided with a second through hole 328, and a connecting member (not shown in the figure) is connected between the second through hole 328 and the two connecting holes 327, the connecting member passes through the second through hole 328, and the roller 325 is rotationally connected with the connecting member. In this embodiment, the connecting member includes a rotating rod, the roller 325 is located between the two lugs 326, and the roller 325 rotates about the connecting member, which can prevent the roller 325 from falling off.

[0032] Please refer to Figure 1 The side of the rotating shaft 2 away from the clamping jaw 33 is connected with two grip rods 21 arranged along the radial direction thereof, and the axial directions of the two grip rods 21 are both directed to the radial direction of the rotating shaft 2. The grip rods 21 are arranged to facilitate the user to rotate the rotating shaft 2, and further facilitate the use.

[0033] Please refer to Figure 3 The side wall of the rotating shaft 2 is provided with a flat key 22, the middle part of the lifting wheel 31 is provided with a clamping hole 312, the rotating shaft 2 passes through the clamping hole 312, the hole wall of the clamping hole 312 is provided with a clamping groove 313, the clamping groove 313 is clamped with the flat key 22, so that the rotating shaft 2 and the lifting wheel 31 are not easy to relatively rotate, and the synchronous rotation of the rotating shaft 2 and the lifting wheel 31 is ensured.

[0034] The clamping jaw 33 includes a first abutting block 331 and a second abutting block 332, and the first abutting block 331 and the second abutting block 332 are connected in an L shape. When the bearing is disassembled, the first abutting block 331 and the second abutting block 332 abut with the side surface and the end surface of the bearing respectively, so that the clamping jaw 33 can firmly clamp the bearing.

[0035] The screw rod 1 is an outer hexagonal screw rod. After the clamping jaw 33 clamps the bearing, the user can rotate the hexagonal head of the screw rod 1 by using a wrench or the like tool, and the user can rotate the screw rod 1 more easily.

[0036] The above is a specific description of the preferred embodiment of the utility model, but the utility model creation is not limited to the described embodiment, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the range defined by the claims of the present application.

Claims

1. A bearing puller, characterized by: The utility model provides a lifting device for screw rod, the utility model discloses a screw rod, a rotating shaft, a box, the rotating shaft is sleeved on the screw rod, and the rotating shaft is screwed with the screw rod, and the rotating shaft is passed in the box, the inside of box is provided with the lifting wheel of fixed connection with the rotating shaft, the lifting wheel is provided with at least two notches, each the notch is curve type, the lateral wall of box is slidably provided with at least two elastic components, one end of the elastic component is in contact with the inner wall of notch, and the other end is connected with the claw, and the elastic component is used to drive the claw moves towards the direction close to the box.

2. The bearing puller of claim 1, wherein: The lateral wall of the box has a guide tube, the elastic component includes a top rod and a compression spring, the top rod is slidably connected with the guide tube, the compression spring is sleeved on the top rod, and the compression spring is connected between the top rod and the guide tube, and the compression spring is used to drive the top rod to slide relative to the guide tube towards the direction close to the box.

3. The bearing puller of claim 2, wherein: The top rod includes a head portion slidably connected with the inner wall of the guide tube and a rod body arranged in a gap with the guide tube, one end of the guide tube away from the box is provided with an abutting plate, and the abutting plate is provided with a first through hole; the head portion is in contact with the inner wall of the notch, the rod body is passed through the first through hole, and both ends of the rod body are fixedly connected with the head portion and the claw respectively, and the compression spring is sleeved on the rod body and located between the head portion and the abutting plate.

4. The bearing puller of claim 3, wherein: One end of the head portion away from the rod body is rotatably connected with a roller, and the roller is rollingly connected with the notch.

5. The bearing puller of claim 4, wherein: The head portion is provided with two oppositely arranged lugs, both the lugs are provided with connecting holes, the roller is provided with a second through hole in the axial direction, and a connecting piece is connected between the second through hole and the two connecting holes, the connecting piece is passed through the second through hole, and the roller is rotatably connected with the connecting piece.

6. The bearing puller of claim 1, wherein: The rotating shaft is connected with two grip rods arranged in the radial direction on one side away from the claw, and the axial directions of the two grip rods are both towards the radial direction of the rotating shaft.

7. The bearing puller of claim 1, wherein: The lateral wall of the rotating shaft is provided with a flat key, the middle portion of the lifting wheel is provided with a clamping hole, the rotating shaft is passed through the clamping hole, the hole wall of the clamping hole is provided with a clamping groove, and the clamping groove is clamped with the flat key.

8. The bearing puller of claim 1, wherein: The notch, the elastic component and the claw are all provided with four, and the four notches, the four elastic components and the four claws are arranged in a cross shape.

9. The bearing puller of claim 1, wherein: The claw includes a first abutting block and a second abutting block, and the first abutting block and the second abutting block are connected in an L shape.

10. The bearing puller of claim 1, wherein: The screw rod is an outer hexagonal screw rod.

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