CN217195113U

CN217195113U - Bearing dismounting tool

Info

Publication number: CN217195113U
Application number: CN202122219748.9U
Authority: CN
Inventors: 程斌; 郝一波; 张步坤
Original assignee: Yantai Eddie Hydraulic Technology Co ltd
Current assignee: Yantai Eddie Hydraulic Technology Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-08-16
Anticipated expiration: 2031-09-14

Abstract

The utility model relates to a machining equipment, specifically a bearing dismantlement frock, including a cylindrical box, the roof center spiro union screw rod of box, set up the notch on the bottom plate of box, the width of notch is greater than the external diameter of the drive shaft below the bearing, is less than the external diameter of bearing inner race; the box body is downwards cut along the axial direction to form a gap with an inner cavity communicated with the outside, the radial profile of the rest part of the box body is in an arch shape and comprises a chord and a major arc, the width of the gap is larger than the outer diameter of the outer ring of the bearing, and the height of the gap is larger than the height of the bearing. Through the utility model discloses bearing after the dismantlement and drive shaft do not receive destruction, can continue to use completely.

Description

Bearing dismounting tool

Technical Field

The utility model relates to a machining is equipped, specifically is a frock is dismantled to bearing.

Background

The bearing of the hydraulic rotary motor is in interference fit with the driving shaft. It is sometimes necessary to remove the bearing from the drive shaft during assembly without damaging the bearing and the drive shaft. Because the interference magnitude between the bearing inner hole and the shaft diameter is large, if the bearing is forcibly knocked down, the bearing and the driving shaft are inevitably damaged.

SUMMERY OF THE UTILITY MODEL

Dismantle the bearing for not damaged ground, the utility model discloses a frock is dismantled to bearing, the technical scheme who takes as follows:

a bearing dismounting tool comprises a cylindrical box body, wherein a screw is screwed in the center of a top plate of the box body, a notch is formed in a bottom plate of the box body, and the width of the notch is larger than the outer diameter of a driving shaft below a bearing and smaller than the outer diameter of an inner ring of the bearing; the box is along its axial downward excision formation inner chamber and the communicating breach in external world, the radial profile of box remainder is the arch, including chord and major arc, the width of breach is greater than the external diameter of bearing inner race, the height of breach are greater than the height of bearing.

Further, the free end of the screw is tapered to reduce rotational resistance.

Furthermore, the inner end of the notch is a semicircle with the center of the circle coinciding with the center of the bottom plate.

Furthermore, the upper end of the screw rod is connected with a bolt head into a whole, and the end part of the bolt head is provided with an inner hexagonal blind hole suitable for inserting a hexagonal wrench.

Furthermore, a radial through hole is formed in the circumferential side wall close to the upper end of the screw rod, and a rotating rod is inserted into the radial through hole in a clearance mode.

Further, the bottom plate is cut or not cut when the box body is cut downwards along the axial direction of the box body.

The utility model has the advantages that: through the utility model discloses bearing after the dismantlement and drive shaft do not receive destruction, can continue to use completely.

Drawings

FIG. 1 is a schematic view of the structure of embodiment 1;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of the structure of the bearing of embodiment 1 when it is disassembled.

Fig. 4 is a schematic structural view of embodiment 2.

Detailed Description

The following examples are provided only for explaining the present invention and are not intended to limit the scope of the present invention.

Embodiment 1, a bearing dismounting tool shown in fig. 1 to 3 includes a cylindrical box 1, a screw 2 is screwed in the center of a top plate 12 of the box 1, a bottom plate 11 of the box 1 is provided with a notch 14, and the width of the notch 14 is greater than the outer diameter of a driving shaft 3 below a bearing 4 and smaller than the outer diameter of an inner ring of the bearing 4; the box body 1 is downwards cut along the axial direction to form a gap 17 with an inner cavity communicated with the outside, and the bottom plate 11 is not cut when the box body 1 is downwards cut along the axial direction. So that the bottom plate supports as much of the inner race of the bearing as possible. The radial profile of the rest part of the box body 1 is in an arch shape and comprises a chord 15 and a major arc 16, wherein the width K of the notch 17 is greater than the outer diameter of the outer ring of the bearing 4, and the height H of the notch 17 is greater than the height of the bearing 4. The free end of the screw 2 is tapered to reduce rotational resistance. The inner end of the notch 14 is a semicircle with the center coinciding with the center of the bottom plate 11. The upper end of the screw rod 2 is connected with the bolt head 5 into a whole, and the end part of the bolt head 5 is provided with an inner hexagonal blind hole suitable for inserting a hexagonal wrench.

When the bearing box is used, a bearing enters the inner cavity of the box body 1 through the notch, and meanwhile, the notch 14 of the bottom plate is sleeved on the driving shaft 3 below the bearing 4 and clings to the lower edge of the inner ring of the bearing. The outer circle surface of the driving shaft is clamped on a fixed vice after a protective pad is added, then a screw is screwed up by clockwise applying force by using an inner hexagonal wrench, and at the moment, the bottom plate can apply an upward pulling-out force to the bearing until the bearing is completely separated from the driving shaft, and finally the disassembly is finished. The bearing and the driving shaft after being disassembled are not damaged and can be completely used continuously.

Embodiment 2, a bearing dismounting tool shown in fig. 4 is otherwise the same as embodiment 1, except that there is no bolt head 5, a radial through hole 21 is provided on the circumferential side wall near the upper end of the screw 2, and a rotary rod 6 is inserted into the radial through hole 21 at a gap. The box body 1 is cut off along the axial direction thereof, including the bottom plate 11. Thus being more convenient to be nested. The self-carrying rotating rod 6 is more labor-saving and more convenient.

Claims

1. The utility model provides a frock is dismantled to bearing which characterized in that: the device comprises a cylindrical box body (1), wherein a screw rod (2) is screwed in the center of a top plate (12) of the box body (1), a notch (14) is formed in a bottom plate (11) of the box body (1), and the width of the notch (14) is greater than the outer diameter of a driving shaft (3) below a bearing (4) and smaller than the outer diameter of an inner ring of the bearing (4); box (1) is along its axial downward excision formation inner chamber and external communicating breach (17), box (1) remainder's radial profile is the arch, including chord (15) and major arc (16), width (K) of breach (17) is greater than the external diameter of bearing (4) outer lane, height (H) of breach (17) are greater than the height of bearing (4).

2. The bearing disassembling tool according to claim 1, characterized in that: the free end of the screw (2) is tapered to reduce the rotational resistance.

3. The bearing disassembling tool according to claim 1, characterized in that: the inner end of the notch (14) is in a semicircular shape, and the circle center of the semicircular shape is coincident with the center of the bottom plate (11).

4. The bearing disassembling tool according to claim 1, characterized in that: the upper end of the screw rod (2) is connected with the bolt head (5) into a whole, and the end part of the bolt head (5) is provided with an inner hexagonal blind hole suitable for inserting a hexagonal wrench.

5. The bearing disassembling tool according to claim 1, characterized in that: a radial through hole (21) is formed in the circumferential side wall close to the upper end of the screw rod (2), and a rotating rod (6) is inserted into the radial through hole (21) in a clearance mode.

6. The bearing disassembling tool according to claim 1, characterized in that: the bottom plate (11) is cut or not cut when the box body (1) is cut downwards along the axial direction.