CN114406950A

CN114406950A - Bearing puller

Info

Publication number: CN114406950A
Application number: CN202111577782.1A
Authority: CN
Inventors: 劳水养
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-04-29

Abstract

The invention discloses a bearing puller, which relates to the field of bearing pullers and comprises a bearing puller body, wherein the bearing puller body comprises a first cylinder barrel, a second cylinder barrel and three pulling claws, the second cylinder barrel is integrally formed at one end of the first cylinder barrel, and one end of the first cylinder barrel is connected with the three pulling claws, so that the bearing puller has the beneficial effects that: compared with the traditional threaded bearing puller, the cylinder type bearing puller has the advantages that the abrasion among the cylinder type work pieces is small, the service life is longer, and the bearing puller is easier to carry and use compared with a hydraulic bearing puller; the length of the whole pulling claw can be adjusted by adjusting the fixation of the second pulling claw part and different bolt holes on the pulling claw adjusting part, and the length can be adjusted according to different positions of the bearing on the rotating shaft; when the bearing is pulled and disassembled, the plane top head arranged at the claw hook end of the pulling claw can be automatically attached to the side surface of the bearing, so that the abrasion to the side surface of the bearing is greatly reduced.

Description

Bearing puller

Technical Field

The invention relates to the field of bearing pullers, in particular to a bearing puller.

Background

Because the bearing installation clearance on the equipment work piece is the tight fit installation, receives sheltering from of casing or various disjunctor parts again, and is unusual difficult when dismantling, so often adopt the bearing to draw the ware and use, compare fluid pressure type bearing and draw the ware, though fluid pressure type bearing draws ware convenient operation, but when dismantling the less bearing of some sizes, manual formula structure is simple relatively, also need not to connect hydraulic equipment or power drive, uses more in a flexible way.

A bearing puller of a common puller is a manual puller in threaded transmission, and a screw bears main acting force in the using process, so that the screw is seriously abraded; due to the size difference of the acted bearings, the opening angle of the pull claw has certain change, and the pull claw hook part of the traditional bearing puller cannot be ensured to be tightly attached to the side surface of the bearing, so that the bearing is easily scratched.

Disclosure of Invention

The present invention is directed to a bearing puller to solve the problems set forth in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the bearing puller comprises a bearing puller body, wherein the bearing puller body comprises a first cylinder barrel, a second cylinder barrel and three pulling claws, the second cylinder barrel is integrally formed at one end of the first cylinder barrel, the three pulling claws are connected with one end of the first cylinder barrel, which is close to the second cylinder barrel, is hinged with three pulling claws at intervals of 120 degrees, external threads are arranged on the outer wall of the second cylinder barrel, an inner wire barrel is connected to the outside of the second cylinder barrel through threads, one end of the inner wire barrel is connected with a switching barrel seat in a switching mode, a linkage rod is hinged to the outer wall of the switching barrel seat in a mode corresponding to the three pulling claws respectively, the other end of the linkage rod is hinged with the middle of the pulling claws, a second air cavity is formed inside the second cylinder barrel, a mandril piston is connected in a matching sliding mode in the second air cavity, the mandril piston is connected with a mandril, and the mandril penetrates out along the end portion of the second cylinder barrel in a sliding mode.

Preferably, the first air cavity communicated with the second air cavity is arranged in the first air cylinder, a drawing rod piston is matched and connected in a sliding mode in the first air cavity, a drawing rod connected with the drawing rod piston penetrates out along the end portion of the first air cylinder in a sliding mode, an air inlet is formed in one side, close to the second air cavity, of the first air cavity, a first one-way air valve is connected to the air inlet, and a second one-way air valve is arranged at the position, close to the communication port of the second air cavity, of the first air cavity.

Preferably, one side of the second air cavity, which is close to the first air cavity, is provided with an air release hole, and an outer port of the air release hole is connected with an air release valve.

Preferably, the outer side wall of the end part of the first cylinder barrel is hinged with a wrench, a draw bar is connected between the middle part of the wrench and the end part of the drawing rod, and a wrench handle is arranged at the end part of the wrench.

Preferably, the pull claw is composed of a first pull claw part and a second pull claw part, the end part of the first pull claw part is a pull claw adjusting part, the pull claw adjusting part is provided with a plurality of bolt holes along the length direction, and the second pull claw part is fixedly connected with the pull claw adjusting part through bolts.

Preferably, the hook end of the second claw portion is welded with a ball hinge seat, the inner side of the ball hinge seat is connected with a plane top head, and the plane top head is connected with the ball hinge seat through an integrally formed ball hinge head.

Preferably, a grip is arranged on the outer wall of one side of the first cylinder barrel, the grip and the first cylinder barrel are vertically arranged, and an anti-skid rubber sleeve is sleeved outside the grip.

The invention has the technical effects and advantages that:

1. compared with the traditional threaded bearing puller, the cylinder type bearing puller has the advantages that the abrasion among the cylinder type work pieces is small, the service life is longer, and the bearing puller is easier to carry and use compared with a hydraulic bearing puller;

2. the length of the whole pulling claw can be adjusted by adjusting the fixation of the second pulling claw part and different bolt holes on the pulling claw adjusting part, and the length can be adjusted according to different positions of the bearing on the rotating shaft;

3. when the bearing is pulled and disassembled, the plane top head arranged at the claw hook end of the pulling claw can be automatically attached to the side surface of the bearing, so that the abrasion to the side surface of the bearing is greatly reduced.

Drawings

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

Fig. 2 is a schematic perspective view of the present invention 2.

Fig. 3 is a side cross-sectional view of the inventive structure.

Fig. 4 is an enlarged view of a portion a in fig. 3.

In the figure: 1. a first cylinder tube; 101. a first air cavity; 2. a second cylinder barrel; 201. a second air cavity; 2011. an air release hole; 3. pulling a claw; 301. a first pulling claw portion; 302. a pull claw adjusting part; 303. a second claw portion; 304. a ball hinge mount; 305. a plane top head; 3051. a ball joint; 4. a top rod; 401. a push rod piston; 5. an inner wire barrel; 6. an adapter sleeve seat; 7. a linkage rod; 8. a pull rod; 801. a pull rod piston; 9. a second one-way air valve; 10. a first one-way air valve; 11. a gas release valve; 12. a wrench; 1201. a handle is wrenched; 13. a draw bar; 14. a handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a bearing puller as shown in figures 1-4, which comprises a bearing puller body, wherein the bearing puller body comprises a first cylinder barrel 1, a second cylinder barrel 2 integrally formed at one end of the first cylinder barrel 1 and three pulling claws 3 connected with one end of the first cylinder barrel 1, one end of the first cylinder barrel 1 close to the second cylinder barrel 2 is hinged with three pulling claws 3 at intervals of 120 degrees, the outer wall of the second cylinder barrel 2 is provided with external threads, the outside of the second cylinder barrel 2 is connected with an inner wire barrel 5 through threads, one end of the inner wire barrel 5 is rotatably connected with a switching barrel seat 6, the outer wall of the switching barrel seat 6 is respectively hinged with a linkage rod 7 corresponding to the three pulling claws 3, the other end of the linkage rod 7 is hinged with the middle part of the pulling claws 3, the inner wire barrel 5 moves under the thread relation with the second cylinder barrel 2 by rotating the inner wire barrel 5, so as to pull the three pulling claws 3 through the linkage rod 7, the opening of the three pulling claws 3 is adjusted to be matched with the bearing, the grip 14 is arranged on the outer wall of one side of the first cylinder barrel 1, the grip 14 is perpendicular to the first cylinder barrel 1 and used for being held by hands, the hand-held electric hand-pulling tool is convenient to use, and the anti-skidding rubber sleeve is sleeved outside the grip 14 to increase the contact friction force with the hand.

As shown in fig. 3, a second air chamber 201 is arranged inside the second cylinder barrel 2, a ram piston 401 is disposed in the second air chamber 201, the ram piston 401 is connected with a ram 4, the ram 4 slides along the end of the second cylinder barrel 2 to penetrate out, a first air chamber 101 communicated with the second air chamber 201 is disposed inside the first cylinder barrel 1, a draw rod piston 801 is disposed in the first air chamber 101, a draw rod 8 connected with the draw rod piston 801 slides along the end of the first cylinder barrel 1 to penetrate out, an air inlet is disposed at one side of the first air chamber 101 close to the second air chamber 201, a first one-way air valve 10 is connected to the air inlet, a second one-way air valve 9 is disposed at the communication port between the first air chamber 101 and the second air chamber 201, external air enters the first air chamber 101 along the first one-way air valve 10 by drawing the draw rod 8, then the draw rod 8 is pressed, and the air inside the first air chamber 101 is pressed into the second air chamber 201 by the draw rod piston, repeated pull and the roof pressure to pull pole 8, continuously fill gas into second air cavity 201 to release ejector pin 4, carry out the roof pressure to the axle head that the bearing was installed, the disappointing hole 2011 has been seted up to one side that second air cavity 201 is close to first air cavity 101, and the outer port of disappointing hole 2011 is connected with snuffle valve 11, can let out the inside gas of second air cavity 201 after opening through snuffle valve 11, makes ejector pin 4 can retract.

Referring to fig. 2 and 3, the outer side wall of the end of the first cylinder barrel 1 is hinged to a wrench 12, a draw bar 13 is connected between the middle of the wrench 12 and the end of the pull rod 8, a wrench handle 1201 is arranged at the end of the wrench 12, the wrench 12 is turned back and forth by holding the wrench handle 1201, the pull rod 8 can be drawn and pulled, and the operation is labor-saving.

As shown in fig. 1, 2, and 3, the pull claw 3 is composed of a first pull claw portion 301 and a second pull claw portion 303, the end portion of the first pull claw portion 301 is a pull claw adjusting portion 302, a plurality of bolt holes are formed in the pull claw adjusting portion 302 along the length direction of the pull claw adjusting portion, the second pull claw portion 303 is connected and fixed to the pull claw adjusting portion 302 through bolts, the length of the whole pull claw 3 can be adjusted by adjusting the fixing of different bolt holes in the second pull claw portion 303 and the pull claw adjusting portion 302, and the adjustment can be performed according to different positions of the bearing on the rotating shaft.

Combine fig. 3 and fig. 4 to show, the hook end welding that the claw portion 303 was drawn to the second has ball articulated seat 304, and ball articulated seat 304 inboard is connected with plane top 305, and plane top 305 is connected with ball articulated seat 304 through integrated into one piece's ball articulated head 3051, draws claw 3 to detain when drawing the bearing, and plane top 305 can be automatic and the laminating of bearing side, greatly reduced is to the wearing and tearing of bearing side.

The working principle of the invention is as follows: when the invention is used, the inner screw cylinder 5 moves under the thread relationship with the second cylinder barrel 2 by rotating the inner screw cylinder 5, so that the three pulling claws 3 are pulled by the linkage rod 7, the opening openings of the three pulling claws 3 are adjusted to be matched with the bearing, the claw ends of the three pulling claws 3 are buckled and pulled on one side surface of the bearing, then the wrench 12 is repeatedly pulled by the hand wrench 1201, the pulling rod 8 is pulled and jacked, the pulling rod 8 is pulled and pulled, so that the external air enters the first air cavity 101 along the first one-way air valve 10, when the pulling rod 8 is jacked, the air in the first air cavity 101 is squeezed into the second air cavity 201 by the pulling rod piston 801, the pulling and jacking of the pulling rod 8 are repeated, the second air cavity 201 is continuously filled with air, so that the ejector rod 4 is pushed out, the shaft end installed by the bearing is jacked and separated from the bearing, compared with the traditional threaded bearing puller, the threaded bearing puller has the advantages that the abrasion among the workpieces is small, and the service life is longer;

when the bearing is disassembled, because the positions of the bearing on the rotating shaft are different, the length of the whole pulling claw 3 can be adjusted by adjusting the fixation of different bolt holes on the second pulling claw part 303 and the pulling claw adjusting part 302, and the bearing can be adjusted according to different positions of the bearing on the rotating shaft;

above-mentioned when drawing the dismantlement to the bearing, the plane top 305 that the claw end of drawing claw 3 was equipped with can laminate with the bearing side automatically, greatly reduced is to the wearing and tearing of bearing side.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The bearing puller comprises a bearing puller body and is characterized in that: the bearing puller body comprises a first air cylinder barrel (1), a second air cylinder barrel (2) and three pulling claws (3), wherein one end of the first air cylinder barrel (1) is integrally formed, the three pulling claws (3) are connected with one end of the first air cylinder barrel (1), one end, close to the second air cylinder barrel (2), of the first air cylinder barrel (1) is hinged with the three pulling claws (3) at intervals of 120 degrees, external threads are arranged on the outer wall of the second air cylinder barrel (2), an inner wire barrel (5) is connected to the outside of the second air cylinder barrel (2) through threads, one end of the inner wire barrel (5) is connected with a switching barrel seat (6) in a rotating mode, a linkage rod (7) is hinged to the outer wall of the switching barrel seat (6) corresponding to the three pulling claws (3), the other end of the linkage rod (7) is hinged to the middle part of the pulling claws (3), a second air cavity (201) is arranged inside the second air cavity (2), and a piston ejector rod (401) is matched and slidably connected in the second air cavity (201), the ejector rod piston (401) is connected with an ejector rod (4), and the ejector rod (4) penetrates through the second cylinder barrel (2) in a sliding mode along the end portion of the second cylinder barrel.

2. The bearing puller of claim 1, wherein: the air cylinder is characterized in that a first air cavity (101) communicated with a second air cavity (201) is arranged inside the first air cylinder (1), a drawing rod piston (801) is matched and connected with the first air cavity (101) in a sliding mode, a drawing rod (8) connected with the drawing rod piston (801) penetrates out along the end portion of the first air cylinder (1) in a sliding mode, an air inlet is formed in one side, close to the second air cavity (201), of the first air cavity (101), a first one-way air valve (10) is connected to the air inlet, and a second one-way air valve (9) is arranged at the position, close to the second air cavity (201), of the first air cavity (101) and the position, close to the second air cavity (201).

3. The bearing puller of claim 2, wherein: and an air leakage hole (2011) is formed in one side, close to the first air cavity (101), of the second air cavity (201), and an outer port of the air leakage hole (2011) is connected with an air leakage valve (11).

4. The bearing puller of claim 2, wherein: the outer side wall of the end part of the first cylinder barrel (1) is hinged with a wrench (12), a traction rod (13) is connected between the middle part of the wrench (12) and the end part of the drawing rod (8), and a wrench handle (1201) is arranged at the end part of the wrench (12).

5. The bearing puller of claim 1, wherein: the pull claw (3) is composed of a first pull claw part (301) and a second pull claw part (303), the end part of the first pull claw part (301) is a pull claw adjusting part (302), a plurality of bolt holes are formed in the pull claw adjusting part (302) along the length direction of the pull claw adjusting part, and the second pull claw part (303) is fixedly connected with the pull claw adjusting part (302) through bolts.

6. The bearing puller according to claim 5, wherein: the hook end of the second pulling claw part (303) is welded with a ball hinge seat (304), the inner side of the ball hinge seat (304) is connected with a plane top head (305), and the plane top head (305) is connected with the ball hinge seat (304) through an integrally formed ball hinge head (3051).

7. The bearing puller of claim 1, wherein: the outer wall of one side of the first cylinder barrel (1) is provided with a handle (14), the handle (14) is perpendicular to the first cylinder barrel (1), and an anti-skid rubber sleeve is sleeved outside the handle (14).