RU175789U1 - ROLLING BEARING ASSEMBLY AT THE END OF THE SHAFT - Google Patents

Abstract

The utility model relates to machine parts, namely to shaft supports with rolling bearings, and can be used to create pump bearings in those cases when during operation replacement of rolling bearings is required, for example, for oil booster pumps with an impeller located between bearings. The bearing assembly of the rolling bearing comprises a sleeve 1 with a protrusion 2, covering the shaft 3, on which the inner ring 5 of the bearing 6, which is pressed against the protrusion by means of the cover 4, is located. Through the sleeve 1 there are through threaded holes 7 with possible by screwing in them screws 8 with an emphasis on the shaft 3 for axial displacement of the inner ring 5 when removing the bearing 6. The axial compression of the inner ring 5 of the bearing 6 by the cover 4 is carried out using several screws 8 screwed into the shaft 3 with the possibility of their use when removing the bearing 6. In this case, the sleeve 1 can be rested against the end 9 of the shaft 3 (Fig. 1) or in the shoulder 10 made on the shaft 3 (Fig. 2). The mounting of the rolling bearing mount is carried out in the following sequence: on the shaft 3 by transition landing (from the gap to tightness) install the sleeve 1 with a protrusion 2 and press on it a rolling bearing 6 until the stop of its inner ring 5 in the protrusion 2; install the cover 4 and fasten it to the shaft 3 with screws 8, which ensures that the sleeve 1 and bearing 6 are kept from shifting towards the end face 9 of the shaft 3. Dismantling the bearing assembly is carried out in the following order: unscrew the screws 8 and remove the cover 4 holding the bearing 6 together sleeve 1 from shear along the axis of the shaft 3; screw the loose screws 8 into the threaded holes 7 of the sleeve 3 all the way into the end 9 of the shaft 3 (see Fig. 1) or the stop shoulder 10 of the shaft 3 (see Fig. 2), as a result of which the assembly of parts 1, 5, 6 is removed from shaft 3; through the grooves 11 in the protrusion 2 of the sleeve 1 using a punch (not shown) remove the bearing 6 from the sleeve 1. Using a utility model significantly improves the operational characteristics of the mounting of the rolling bearing on the shaft end. 3 s.p. f-ly, 2 ill.

Description

The utility model relates to machine parts, namely to shaft supports with rolling bearings, and can be used to create pump bearings in those cases when during operation replacement of rolling bearings is required, for example, for oil booster pumps with an impeller located between bearings.

In a number of machines and devices, there is a need to replace rolling bearings. To ensure the dismantling of the rolling bearing, it is necessary to slide the inner ring of the bearing from the seat belt on the shaft towards the end of the shaft.

It is undesirable to apply a force to shift the rolling bearing not to the inner but to the outer ring of the bearing in order to avoid damage to the cage and rolling elements of the bearing. Therefore, designs have been created for the mountings of the rolling bearing, in which the inner ring of the bearing is worn on an annular sleeve with an emphasis in the bead made on this sleeve, and the sleeve is already put on (pressed) onto the shaft.

As a prototype, a roller bearing mount on the shaft end is selected, in which, to ensure the sleeve is shifted along with the bearing along the shaft, its length is selected such that a part of the sleeve extends beyond the bearing ring and an external thread is made on this part of the sleeve to screw on a technological device, for example , in the form of a ring with an internal thread - such as a puller, with which the sleeve is shifted together with the bearing from the shaft [B. Malyushenko "Dynamic pumps" Atlas, M., "Engineering", 1984, sheet 43, Fig. 107, pump type MSC].

A disadvantage of the known design is low performance, due to the need to manufacture a special puller for dismantling the bearing.

The purpose of the utility model is to improve performance by such a design change that will allow the replacement of the rolling bearing without the use of special tools and tools.

This goal is achieved by the fact that in the mount of the rolling bearing on the end of the shaft, containing a sleeve with a protrusion, covering the shaft, on which the inner ring of the bearing pressed against the protrusion by means of a cover is placed, according to a utility model, threaded through holes are made in the sleeve with the possibility of screwing into them screws with emphasis in the shaft for axial displacement of the inner ring when removing the bearing.

For a greater improvement in operational characteristics, the axial compression of the inner ring of the bearing by the cover is carried out using several screws screwed into the shaft with the possibility of their use when removing the bearing.

In this case, the sleeve can be abutted against the shaft end or into a shoulder made on the shaft.

The utility model is illustrated by drawings, which depict a longitudinal section of a rolling bearing mount: FIG. 1 is an embodiment of a node in which the sleeve is abutted against the shaft end; FIG. 2 is an embodiment of a unit in which the sleeve is abutted against a shoulder made on the shaft.

The list of positions in the drawings:

1 - sleeve;

2 - ledge;

3 - shaft;

4 - cover;

5 - an inner ring of a rolling bearing;

6 - rolling bearing;

7 - through threaded hole;

8 - screw;

9 - shaft end;

10 - persistent shoulder of the shaft;

11 - groove in the protrusion 2.

The mounting of the rolling bearing includes a sleeve 1 with a protrusion 2, covering the shaft 3, on which the inner ring 5 of the bearing 6, which is pressed against the protrusion by means of the cover 4, is placed. The sleeve 1 has through threaded holes 7 with the possibility of screw 8 being screwed into them with an emphasis on the shaft 3 for axial displacement of the inner ring 5 when removing the bearing 6.

The axial compression of the inner ring 5 of the bearing 6 by the cover 4 is carried out using several screws 8 screwed into the shaft 3 with the possibility of their use when removing the bearing 6.

In this case, the sleeve 1 can be abutted against the end face 9 of the shaft 3 (Fig. 1) or into a shoulder 10 made on the shaft 3 (Fig. 2).

The mounting of the rolling bearing mount is carried out in the following sequence:

a sleeve 1 with a protrusion 2 is mounted on the shaft 3 in a transitional fit (from the gap to the interference fit) and the rolling bearing 6 is pressed onto it until the stop of its inner ring 5 in the protrusion 2;

install the cover 4 and fasten it to the shaft 3 with screws 8, which ensures that the sleeve 1 and bearing 6 are kept from shifting towards the end face 9 of the shaft 3.

Dismantling the bearing assembly is carried out in the following order:

unscrew the screws 8 and remove the cover 4, which holds the bearing 6 together with the sleeve 1 from a shift along the axis of the shaft 3;

screw the loose screws 8 into the threaded holes 7 of the sleeve 3 all the way into the end 9 of the shaft 3 (see Fig. 1) or the stop shoulder 10 of the shaft 3 (see Fig. 2), as a result of which the assembly of parts 1, 5, 6 is removed from shaft 3;

through the grooves 11 in the protrusion 2 of the sleeve 1 with a punch (not shown) remove the bearing 6 from the sleeve 1.

Improving the operational characteristics of the attachment site is that to shift the sleeve 1 from the shaft 3, it is enough to screw the screws 8 into the threaded holes 7, that is, only standard parts included in the unit are used without the need for special technological devices (puller).

The use of the utility model significantly improves the operational characteristics of the rolling bearing mount on the shaft end.

Claims (4)

1. The bearing assembly of the rolling bearing at the end of the shaft, comprising a sleeve with a protrusion, covering the shaft, on which the inner ring of the bearing is pressed against the protrusion by means of a cover, characterized in that through threaded holes are made in the sleeve so that screws can be screwed into them with a stop in shaft for axial displacement of the inner ring when removing the bearing. 2. The bearing mount according to claim 1, characterized in that the axial compression of the inner ring of the bearing by the cover is carried out using several screws screwed into the shaft with the possibility of their use when removing the bearing. 3. The bearing mount according to claim 1, characterized in that the sleeve is abutted against the shaft end. 4. The bearing mount according to claim 1, characterized in that the sleeve is abutted in a shoulder made on the shaft.

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