CN217097601U

CN217097601U - Bearing drawing device

Info

Publication number: CN217097601U
Application number: CN202221013916.7U
Authority: CN
Inventors: 黎斌
Original assignee: Chongqing Jinkang Power New Energy Co Ltd
Current assignee: Chongqing Jinkang Power New Energy Co Ltd
Priority date: 2022-04-24
Filing date: 2022-04-24
Publication date: 2022-08-02
Anticipated expiration: 2032-04-24

Abstract

The utility model relates to a bearing is drawn and is pulled device, draw the horse and be cylindric claw structure that colludes including hydraulic pressure, collude the claw structure including the curb plate that is the tube-shape and locate the first end plate and the second end plate at curb plate both ends, first end plate and second end plate all are the ring form, first end plate middle part be equipped with be used for with hydraulic pressure draws the screw hole that the horse is connected, second end plate middle part is equipped with the via hole that is used for passing the pivot, curb plate and second end plate form the barb that is used for hooking the bearing terminal surface jointly, compare in prior art that the claw structure that colludes that is used for the drawing horse that the bearing was dismantled partially atress too big, damage easily, the problem that life is shorter, the utility model provides a cylindric claw structure has avoided colluding the too big problem of claw local atress, is difficult to damage, and life is longer.

Description

Bearing drawing device

Technical Field

The utility model relates to a frock clamp technical field, concretely relates to bearing drawing device.

Background

In industrial production, when the bearing needs to be detached from the rotating shaft, a bearing pulling device is needed. The traditional bearing drawing device usually adopts a mechanical drawing device or a hydraulic drawing device, when the bearing drawing device is used, a hook claw at the front part of the drawing device hooks a bearing, a push-out shaft at the middle part of the drawing device props against a rotating shaft, and the bearing and the rotating shaft can be relatively displaced by rotating the push-out shaft (mechanical drawing device) or hydraulically pushing the push-out shaft (hydraulic drawing device), so that the bearing is pulled out. No matter a mechanical puller or a hydraulic puller is adopted, the following defects exist: the end part of the ejection shaft is sharp, and the end part of the ejection shaft can rub or extrude with the end surface of the rotating shaft when in use, so that the rotating shaft can be seriously damaged; the hook claw is of a single-claw or three-claw structure, the stress area of the hook claw contacting with the bearing is small, the hook claw is easy to damage due to overlarge local stress, and the service life is short; similarly, the bearing is locally stressed greatly and is easy to be damaged after being drawn.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the bearing drawing device is provided for solving the problems that a claw structure of a puller for bearing disassembly in the prior art is locally stressed too much, is easy to damage and has short service life.

In order to realize the purpose, the utility model discloses a technical scheme be:

the utility model provides a bearing drawing device, draws the horse and is cylindric claw structure that colludes including hydraulic pressure, collude the claw structure including the curb plate that is the tube-shape and locate the first end plate and the second end plate at curb plate both ends, first end plate and second end plate all are the ring form, first end plate middle part be equipped with be used for with hydraulic pressure draws the screw hole that the horse is connected, second end plate middle part is equipped with the via hole that is used for passing the pivot, curb plate and second end plate form the barb that is used for hooking the bearing terminal surface jointly.

Adopt aforementioned technical scheme the utility model discloses, on the basis of the horse is drawn to current hydraulic pressure, cancellation single claw or three-jaw structure adopt cylindric colluding the claw structure and replace, during the use, second end plate and bearing end face contact and atress, so should collude the area of stress of claw structure bigger and the atress even, compare in prior art be used for bearing dismantlement draw the horse collude claw structure local atress too big, damage easily, the problem that life is shorter, the utility model provides a cylindric colludes the claw structure and has avoided colluding the too big problem of claw local atress, be difficult to damage, life is longer.

Furthermore, be equipped with cylindric cushion on the pivot towards the terminal surface of hydraulic pressure puller one end, the axis of cushion with the axis collineation of pivot, the diameter of cushion is less than the diameter of pivot uses the cushion to prevent that the pivot terminal surface from receiving the damage.

Furthermore, the rotating shaft is a hollow shaft, the end face of the cushion block is provided with an inserting part, the inserting part is inserted into the central hole of the rotating shaft, and when the rotating shaft is the hollow shaft, the cushion block can be firmly fixed with the rotating shaft through the inserting part, so that the bearing can be conveniently and subsequently detached.

Furthermore, collude the claw structure and collude the claw structure including the first claw structure and the second that collude that are connected, first collude claw structure and second collude claw structure symmetrical arrangement and all be the halfcylinder, collude the claw structure with first claw structure and second and collude the claw structure and hook the bearing terminal surface respectively, and the lock is in the same place again and can wrap up the bearing in inside, and is easy and simple to handle swift.

Further, still include the lantern ring, be equipped with convex spacing ring on the lateral surface of curb plate, the lantern ring cup joints on the lateral surface and pass through the spacing ring is spacing, and the lantern ring is used for colluding the claw structure with first colluding the claw structure with the second and colludes the claw structure fastening together, prevents to become flexible.

Further, still include the clamp, the clamp hoop cup joints on the lateral surface of curb plate, the clamp is used for colluding the claw structure with first colluding the claw structure with the second and colludes the claw structure fastening together equally, prevents not hard up.

Furthermore, two side faces of the limiting ring are coplanar with two side faces of the second end plate respectively, the outer diameter of the second end plate is designed to be larger than that of the side plate, the limiting ring is formed on the portion, protruding outwards, of the second end plate compared with the side plate, and the limiting ring does not need to be machined separately during production and manufacturing, so that the manufacturing is easier.

Compared with the prior art, the beneficial effects of the utility model are that: the cylindrical hook claw structure avoids the problem that the local stress of the hook claw is overlarge, is not easy to damage and has longer service life; correspondingly, the bearing has larger stress area and uniform stress, ensures that the bearing is not damaged after being drawn and can be used for subsequent bearing failure analysis and repeated use of the bearing; the cushion block is used for preventing the end face of the rotating shaft from being damaged.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a sectional view of the present invention in use.

The labels in the figure are: the method comprises the following steps of 1-hydraulic puller, 2-claw structure, 3-cushion block, 4-lantern ring, 5-limiting ring, 6-rotating shaft, 7-bearing, 11-ejecting shaft, 21-side plate, 22-first end plate and 23-second end plate.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

A bearing drawing device comprises a hydraulic drawing horse 1 and a cylindrical hook claw structure 2, wherein the hook claw structure 2 comprises a cylindrical side plate 21, a first end plate 22 and a second end plate 23 which are arranged at two ends of the side plate 21, the first end plate 22 and the second end plate 23 are both in a circular ring shape, a threaded hole used for being connected with the hydraulic drawing horse 1 is formed in the middle of the first end plate 22, a through hole used for penetrating through a rotating shaft 6 is formed in the middle of the second end plate 23, and a barb used for hooking the end face of a bearing 7 is formed by the side plate 21 and the second end plate 23 together;

a cylindrical cushion block 3 is arranged on the end face of one end of the rotating shaft 6, which faces the hydraulic puller 1, the axis of the cushion block 3 is collinear with the axis of the rotating shaft 6, and the diameter of the cushion block 3 is smaller than that of the rotating shaft 6;

the rotating shaft 6 is a hollow shaft, the end surface of the cushion block 3 is provided with an inserting part, and the inserting part is inserted in a central hole of the rotating shaft 6;

the claw hooking structure 2 comprises a first claw hooking structure and a second claw hooking structure which are connected, and the first claw hooking structure and the second claw hooking structure are symmetrically arranged and are semi-cylindrical;

the side plate structure is characterized by further comprising a lantern ring 4, wherein a convex limiting ring 5 is arranged on the outer side surface of the side plate 21, and the lantern ring 4 is sleeved on the outer side surface and limited through the limiting ring 5;

besides using a lantern ring, a hoop can be used, the hoop is sleeved on the outer side surface of the side plate 21 in the annular direction, and the effect of fastening the first claw hooking structure and the second claw hooking structure together can be achieved;

two side surfaces of the retainer ring 5 are coplanar with two side surfaces of the second end plate 23, respectively.

When in use, firstly, the inserting part of the cushion block 3 is inserted into the central hole of the rotating shaft 6; secondly, mounting a first claw hooking structure and a second claw hooking structure to enable the first claw hooking structure and the second claw hooking structure to buckle the cushion block 3 and the bearing 7 inside, and enabling the cushion block 3 to be abutted to the first claw hooking structure and the second claw hooking structure; thirdly, sleeving the lantern ring 4 on the outer side surfaces of the first hook claw structure and the second hook claw structure, so that the tool is fastened; then, screwing the hydraulic puller into a threaded hole surrounded by the first hook claw structure and the second hook claw structure until the hydraulic puller is contacted with the cushion block 3; finally, the ejection shaft 11 of the hydraulic puller 1 is ejected outwards, and the bearing 7 is pulled until the bearing is separated from the rotating shaft 6.

The utility model adopting the technical scheme cancels a single-claw or three-claw structure on the basis of the existing hydraulic drawing tool, adopts a cylindrical hook claw structure to replace, and when in use, the second end plate is contacted and stressed with the end surface of the bearing, so that the stress area of the hook claw structure is larger and the stress is uniform, compared with the problems that the hook claw structure of the drawing tool for bearing disassembly in the prior art has overlarge local stress, is easy to damage and has shorter service life, the utility model provides a cylindrical hook claw structure avoids the problem of overlarge local stress of the hook claw, is not easy to damage and has longer service life; meanwhile, the bearing has larger stress area and uniform stress, so that the bearing is not damaged after being pulled and can be used for subsequent bearing failure analysis and repeated use; the cushion block is used for preventing the end face of the rotating shaft from being damaged.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a bearing drawing device which characterized in that: draw horse (1) and be cylindric claw structure (2) of colluding including hydraulic pressure, collude claw structure (2) including curb plate (21) that are the tube-shape and locate first end plate (22) and second end plate (23) at curb plate (21) both ends, first end plate (22) and second end plate (23) all are the ring form, first end plate (22) middle part be equipped with be used for with hydraulic pressure draws the screw hole that horse (1) is connected, second end plate (23) middle part is equipped with the via hole that is used for passing pivot (6), curb plate (21) and second end plate (23) form the barb that is used for hooking bearing (7) terminal surface jointly.

2. The bearing pulling apparatus as set forth in claim 1, wherein: the end face, facing one end of the hydraulic puller (1), of the rotating shaft (6) is provided with a cylindrical cushion block (3), the axis of the cushion block (3) is collinear with the axis of the rotating shaft (6), and the diameter of the cushion block (3) is smaller than that of the rotating shaft (6).

3. The bearing pulling apparatus as set forth in claim 2, wherein: the rotating shaft (6) is a hollow shaft, the end face of the cushion block (3) is provided with an inserting part, and the inserting part is inserted in a central hole of the rotating shaft (6).

4. The bearing pulling apparatus as set forth in claim 1, wherein: collude claw structure (2) and collude the claw structure including the first claw structure and the second that are connected, first collude claw structure and second collude claw structure symmetrical arrangement and all be the semi-cylinder.

5. The bearing pulling apparatus as set forth in claim 4, wherein: still include the lantern ring (4), be equipped with convex spacing ring (5) on the lateral surface of curb plate (21), lantern ring (4) cup joint on the lateral surface and through spacing ring (5) are spacing.

6. The bearing pulling apparatus as set forth in claim 4, wherein: the clamping device further comprises a hoop which is sleeved on the outer side surface of the side plate (21) in the circumferential direction.

7. The bearing pulling apparatus as set forth in claim 5, wherein: and two side surfaces of the limiting ring (5) are coplanar with two side surfaces of the second end plate (23) respectively.