CN214265424U

CN214265424U - Bearing dismounting tool

Info

Publication number: CN214265424U
Application number: CN202120166749.9U
Authority: CN
Inventors: 杨启正; 罗斐; 李健; 雷先华
Original assignee: Hunan Institute of Traffic Engineering
Current assignee: Hunan Institute of Traffic Engineering
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-09-24
Anticipated expiration: 2031-01-21

Abstract

The utility model provides a bearing dismounting tool, which comprises a bracket, the support includes the roof and sets up the stand at the roof both ends the roof middle part is provided with the screw hole female fit has the screw rod, the bottom of screw rod is provided with the dog, the cover is equipped with an external screw thread section of thick bamboo just on the screw rod an external screw thread section of thick bamboo sets up on the dog, be provided with the chucking device on the external screw thread section of thick bamboo, work as when the external screw thread section of thick bamboo rotates, the chucking device can expand in step or the bearing of crimple in order to press from both sides tight different specifications. The utility model discloses a can carry out the chucking device of chucking to different specification bearings from bearing bottom chucking bearing, the rethread screw rod is with whole chucking device and bearing pull-up together to steadily pull out the bearing, reduce the problem that the bearing damaged because the atress is uneven.

Description

Bearing dismounting tool

Technical Field

The utility model relates to a maintenance technical field, concretely relates to bearing extracting tool.

Background

In the prior art, a bearing puller is generally adopted to detach a bearing, the bearing puller generally comprises a mounting seat and a plurality of hooks arranged on the periphery of the mounting seat, the bearing puller is rotatably connected with a first end of a screw rod in the mounting seat, and a second end of the screw rod is in threaded connection with a support. The bearing is pulled out by hooking the hook at the bottom of the bearing and rotating the screw rod to pull the bearing outwards.

However, when the plurality of hooks are used for hooking the bottom of the bearing, the hooks need to be hooked at the bottom of the bearing one by one, and due to the fact that stress of the hooks at the bottom is different, uneven stress of the bearing is easily caused, and the bearing is easily damaged in the process of pulling out the bearing.

SUMMERY OF THE UTILITY MODEL

The utility model provides a bearing dismounting tool, the couple of solving current bearing dismounting device can not hook the bearing in step for the uneven problem of bearing atress.

In order to solve the problem, the utility model provides a bearing dismounting tool, which comprises a bracket, the support includes the roof and sets up the stand at the roof both ends the roof middle part is provided with the screw hole female fit has the screw rod, the bottom of screw rod is provided with the dog, the cover is equipped with an external screw thread section of thick bamboo just on the screw rod the external screw thread section of thick bamboo sets up on the dog, be provided with the chucking device on the external screw thread section of thick bamboo, work as when the external screw thread section of thick bamboo rotates, the chucking device can expand or shrink in step and press from both sides the bearing of tight different specifications.

In a possible embodiment, the gripping means comprise a movable threaded sleeve which is threadedly engaged with the externally threaded barrel; at least two connecting rods which are uniformly arranged around the periphery of the movable threaded sleeve and the first ends of which are hinged on the movable threaded sleeve; the pull rods are arranged on the connecting rods, the first ends of the pull rods are hinged with the second ends of the connecting rods, and hooks used for being in contact with the bottoms of the bearings are arranged at the second ends of the pull rods; the pull rod is arranged in parallel with the central axis of the external thread cylinder, and a first inclined surface block is arranged on the surface of the pull rod facing the external thread cylinder; the positioning sleeve is rotatably connected to the bottom end of the external thread cylinder, and second inclined plane blocks matched with the first inclined plane blocks are uniformly arranged on the periphery of the positioning sleeve; the first inclined plane block is provided with a first inclined plane which inclines along the length direction of the pull rod, the second inclined plane block is provided with a second inclined plane which can be attached to the first inclined plane, and when the external thread cylinder is rotated, the first inclined plane can slide along the second inclined plane so that the distance between the pull rod and the external thread cylinder is increased or decreased.

In a possible embodiment, a T-shaped sliding groove is arranged on one of the first inclined surface and the second inclined surface, and a T-shaped boss which is slidably arranged in the T-shaped sliding groove is arranged on the other inclined surface.

In a possible embodiment, the hook is detachably fixed to the second end of the pull rod.

In a possible embodiment, the bottom end of the external thread cylinder is connected with two clamping sleeves at intervals in a threaded manner, the positioning sleeve is arranged between the two clamping sleeves, and the inner diameter of the positioning sleeve is larger than the thread major diameter of the external thread cylinder.

In a possible embodiment, a first rotating disc is connected to the top end of the external thread cylinder, and a second rotating disc is connected to the top end of the screw rod.

The embodiment of the utility model provides a bearing extracting tool, from bearing bottom chucking bearing through the chucking device that can carry out the chucking to different specification bearings, the rethread screw rod is with whole chucking device and bearing pull-up together to steadily pull out the bearing, reduce the uneven problem that damages of bearing atress.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a perspective view of a bearing dismounting tool according to an embodiment of the present invention;

fig. 2 is a schematic view of a screw structure according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a positioning sleeve according to an embodiment of the present invention;

fig. 4 is a schematic structural view of an external thread cylinder according to an embodiment of the present invention;

fig. 5 is a schematic view of a pull rod structure according to an embodiment of the present invention.

In the figure: 1. a column; 101. a supporting plate; 2. a top plate; 3. an externally threaded barrel; 301. a card sleeve; 302. a first turntable; 4. a movable threaded sleeve; 5. a connecting rod; 6. a pull rod; 601. a first bevel block; 602. a T-shaped boss; 7. a positioning sleeve; 701. a second bevel block; 702. a T-shaped chute; 8. hooking; 9. a screw; 901. a second turntable; 902. a stopper; 10. and (4) a clamping device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present specification, reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1 to 5, the present embodiment provides a bearing dismounting tool, which includes a bracket, the bracket includes a top plate 2, optionally, the top plate 2 is a long plate structure, two columns 1 are connected to two ends of the top plate 2, and a threaded section at one end of each column 1 penetrates through the top plate 2 and is fastened by a fastening member such as a nut. Optionally, a bracing plate 101 is provided at the bottom end of the two uprights 1. Optionally, a threaded hole is arranged in the middle of the top plate 2, and a screw 9 is in threaded fit with the threaded hole.

When the bearing locking device is used specifically, the upright post 1 on the support is placed on the peripheral plane of a bearing to be disassembled to form a stress supporting point, and then the screw rod 9 is rotated to drive the assembly for locking the bearing to integrally lift up, so that the bearing can be pulled out.

In an alternative embodiment, the threaded rod 9 is sleeved with the externally threaded barrel 3, and the externally threaded barrel 3 can slide up and down along the threaded rod 9. Referring to fig. 2, optionally, a stopper 902 is provided at the bottom end of the screw 9, and the stopper 902 is used to limit the removal of the externally threaded cylinder 3 from the screw 9, that is, the stopper 902 has an outer diameter larger than the major diameter of the thread of the externally threaded cylinder 3.

Referring to fig. 1, in an alternative implementation, a clamping device 10 is provided on the external thread cylinder 3, the clamping device 10 being used to lock bearings of different specifications. Specifically, the clamping device 10 comprises a movable threaded sleeve 4 in threaded fit with the external threaded cylinder 3, three support lugs are uniformly arranged on the periphery of the movable threaded sleeve 4, and a connecting rod 5 is connected to each support lug. The first end of the connecting rod 5 is hinged with the corresponding support lug, and the second end of the connecting rod 5 is hinged with the first end of the pull rod 6. That is, when the external thread cylinder 3 is rotated, the movable threaded sleeve 4 can move up and down along the external thread cylinder 3, thereby moving the connecting rod 5 and the pull rod 6.

Optionally, the tie rod 6 is arranged parallel to the central axis of the externally threaded cylinder 3. Specifically, a first slope block 601 is provided on the surface of the pull rod 6 facing the external thread cylinder 3, optionally, the first slope block 601 is a right-angled triangle block, one right-angled edge of the right-angled triangle block is provided on the surface of the pull rod 6 facing the external thread cylinder 3, a slope of the right-angled triangle block is set as a first slope, and the first slope faces the external thread cylinder 3 side. Referring to fig. 4, correspondingly, two ferrules 301 are provided at the bottom end of the externally threaded barrel 3. Optionally, the cutting ferrule 301 is screwed on the external thread barrel 3, the positioning sleeve 7 is sleeved on the thread section of the external thread barrel 3 between the two cutting ferrules 301, the positioning sleeve 7 is limited to move up and down by the two cutting ferrules 301, that is, the positioning sleeve 7 can only rotate on the external thread barrel 3, so the inner diameter of the positioning sleeve 7 needs to be larger than the thread diameter of the external thread barrel 3.

Referring to fig. 3, optionally, three second inclined plane blocks 701 are uniformly arranged on the outer circumference of the positioning sleeve 7, the second inclined plane blocks 701 are also arranged as right triangle blocks, a right angle surface of the right triangle block is fixed on the positioning sleeve 7, the inclined plane of the right triangle block is defined as a second inclined plane, and the second inclined plane of the second inclined plane block 701 is arranged toward the first inclined plane of the first inclined plane block 601. That is, the first inclined plane can be attached to the second inclined plane, and in terms of image, the first inclined plane block 601 and the second inclined plane block 701 correspond to two portions of a square block cut from a diagonal line thereof.

Alternatively, the first inclined surface may slide along the second inclined surface during the movement of the movable screw sleeve 4. Specifically, a T-shaped boss 602 is provided on the first inclined surface, and correspondingly, a T-shaped sliding groove 702 matching with the T-shaped boss 602 is provided on the second inclined surface.

That is, the first slope piece 601 and the second slope piece 701 can slide relative to each other, and during the sliding process, the distances between the three tie rods 6 and the external thread cylinder 3 can be synchronously increased or decreased, so that bearings with different specifications can be synchronously clamped.

In a possible realization, a hook 8 is connected to the second end of the pull rod 6. Optionally, the hook 8 is fixed in the slot at the second end of the pull rod 6 by a bolt, and the top of the hook 8 contacts with the bottom surface of the slot to prevent the hook 8 from rotating. Alternatively, the hook portion orientation of the hook 8 may be disposed inwardly or outwardly to facilitate gripping of the bearing from the bearing bore or from the bearing outer race.

Optionally, to facilitate the rotation of the externally threaded barrel 3, a first rotating disk 302 is attached to the top end of the externally threaded barrel 3. Similarly, in order to facilitate the rotation of the screw 9, a second rotating disc 901 is connected to the top end of the screw 9.

Illustratively, when the present embodiment is used, the bearing is locked by the external thread cylinder 3 together with the clamping device 10, that is, the three hooks 8 are arranged at the bottom of the bearing, and the bearing is clamped synchronously by rotating the first rotating disc 302 for the three pull rods 6 and the hooks 8. After the chucking, pass an external screw thread section of thick bamboo 3 with screw rod 9 and make an external screw thread section of thick bamboo 3 set up on dog 902, again with roof 2 screw-thread fit on screw rod 9 and install second carousel 901 and stand 1, through rotating second carousel 901 in order to realize that an external screw thread section of thick bamboo 3 and chucking device 10 and bearing are synchronous to pull up to accomplish the dismantlement of bearing.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a bearing dismounting tool, includes the support, the support includes roof and the stand of setting at the roof both ends the roof middle part is provided with the screw hole female fit has the screw rod, its characterized in that, the bottom of screw rod is provided with the dog, the cover is equipped with an external screw thread section of thick bamboo just on the screw rod an external screw thread section of thick bamboo sets up on the dog, be provided with chucking device on the external screw thread section of thick bamboo, work as when the external screw thread section of thick bamboo rotates, chucking device can expand in step or shrink tightly in order to press from both sides the bearing of tight different specifications.

2. The bearing removal tool of claim 1, wherein the gripping device comprises:

the movable threaded sleeve is in threaded fit with the external thread cylinder;

at least two connecting rods which are uniformly arranged around the periphery of the movable threaded sleeve and the first ends of which are hinged on the movable threaded sleeve;

the pull rods are arranged on the connecting rods, the first ends of the pull rods are hinged with the second ends of the connecting rods, and hooks used for being in contact with the bottoms of the bearings are arranged at the second ends of the pull rods; the pull rod is arranged in parallel with the central axis of the external thread cylinder, and a first inclined surface block is arranged on the surface of the pull rod facing the external thread cylinder;

the positioning sleeve is rotatably connected to the bottom end of the external thread cylinder, and second inclined plane blocks matched with the first inclined plane blocks are uniformly arranged on the periphery of the positioning sleeve;

the first inclined plane block is provided with a first inclined plane which inclines along the length direction of the pull rod, the second inclined plane block is provided with a second inclined plane which can be attached to the first inclined plane, and when the external thread cylinder is rotated, the first inclined plane can slide along the second inclined plane so that the distance between the pull rod and the external thread cylinder is increased or decreased.

3. The bearing removal tool of claim 2, wherein one of the first and second inclined surfaces is provided with a T-shaped slot, and the other inclined surface is provided with a T-shaped boss slidably disposed in the T-shaped slot.

4. The bearing removal tool of claim 2, wherein the hook is removably secured to the second end of the drawbar.

5. The bearing dismounting tool according to claim 2, wherein the bottom end of the external thread cylinder is connected with two cutting sleeves at intervals in a threaded manner, the positioning sleeve is arranged between the two cutting sleeves, and the inner diameter of the positioning sleeve is larger than the thread major diameter of the external thread cylinder.

6. The bearing removal tool of any one of claims 1-5, wherein a first rotating disc is attached to a top end of the externally threaded barrel and a second rotating disc is attached to a top end of the screw.