CN215509851U

CN215509851U - Bearing assembly tool

Info

Publication number: CN215509851U
Application number: CN202121109851.1U
Authority: CN
Inventors: 刘加宁; 潘洪滨; 辛可忠; 苗福华
Original assignee: AECC Harbin Dongan Engine Co Ltd
Current assignee: AECC Harbin Dongan Engine Co Ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2022-01-14
Anticipated expiration: 2031-05-21

Abstract

The utility model belongs to the technical field of machining tools, and particularly relates to a bearing assembling tool. The device comprises an adapter (1), a first gasket (2), a thrust bearing (3), an auxiliary thrust bearing (5), a threaded shaft (9) and a pressing sleeve (10); the lower end of the threaded shaft (9) is connected with the internal thread of the hollow cavity of the fixed shaft (12) in a matching way, and the upper end of the threaded shaft is connected with the adapter (1) in a threaded way; the middle of the threaded shaft (9) is sleeved with a round cap-shaped pressing sleeve (10) with a through hole in the center, and the pressing sleeve is connected with the threaded shaft (9) through the thrust bearing (3) arranged above the pressing sleeve and the auxiliary thrust bearing (5) arranged below the pressing sleeve. When carrying out bearing assembly, use the moment spanner through the cooperation to rotate adapter (1) drives threaded spindle (9) rotation, and then passes through thrust bearing (3) with assist thrust bearing (5) cooperation makes pressure cover (10) downstream, its edge with to wait to assemble the bearing inner ring and cooperate, will wait to assemble the bearing and impress epaxially.

Description

Bearing assembly tool

Technical Field

The utility model belongs to the technical field of machining tools, and particularly relates to a bearing assembling tool.

Background

The bearing is an important support for a shaft or other rotating parts, is convenient to use and maintain, has a simple supporting structure, is easy to disassemble and assemble, is widely applied and is one of mechanical basic parts. The assembly of the bearing is an important process for the assembly of a mechanical system, and the performance and the service life of the bearing are directly influenced by the assembly quality.

Most of the bearing inner ring and the shaft are in interference fit, and a heating method or a cooling method is needed during assembly. In the prior art, a press-mounting method is mostly adopted when a bearing is assembled, the heated bearing is mounted on a shaft, a press machine is used for pressing the bearing on the shaft, and the pressure is maintained to room temperature; the press machine is not easy to judge and control abnormal conditions occurring in the assembling process, such as bearing installation deflection, or the pressure applied by the press machine exceeds the pressure required by bearing assembling, so that the bearing and the shaft are easy to damage.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is as follows: a bearing assembling tool is provided, which can assemble a bearing efficiently and reliably and avoid the damage of the bearing.

The technical scheme of the utility model is as follows: in order to achieve the purpose, the bearing assembling tool comprises an adapter 1, a first gasket 2, a thrust bearing 3, a bearing seat 4, an auxiliary thrust bearing 5, an auxiliary bearing seat 6, a second gasket 7, a nut 8, a threaded shaft 9, a pressing sleeve 10, a guide sleeve 11, a fixed shaft 12 and a base 13;

the base 13 is fixed on a horizontal plane, and the fixed shaft 12 is vertically connected onto the base 13; the fixed shaft 12 is of a hollow structure, wherein an internal thread is formed in a cavity; the lower end of the threaded shaft 9 is connected with the internal thread in the hollow cavity of the fixed shaft 12 in a matching manner, the upper end of the threaded shaft is connected with the adapter 1 in a threaded manner, and the adapter 1 is used for matching with a torque wrench so as to drive the threaded shaft 9 to rotate; the middle part of the threaded shaft 9 is sleeved with a dome-shaped pressing sleeve 10 with a through hole in the center, and the connection with the threaded shaft 9 is realized through the thrust bearing 3 arranged above the pressing sleeve and the auxiliary thrust bearing 5 arranged below the pressing sleeve; the upper end face of the thrust bearing 3 is tightly pressed with the step face at the upper part of the threaded shaft 9 through the first gasket 2, and the lower end of the thrust bearing is connected with the pressing sleeve 10 through the bearing seat 4; the upper end of the auxiliary power bearing 5 is connected with the pressing sleeve 10 through the auxiliary bearing seat 6, and the lower end surface of the auxiliary power bearing is tightly pressed with the nut 8 sleeved on the threaded shaft 9 through the second gasket 7;

the upper end of the guide sleeve 11 is connected with the pressing sleeve 10 through a pin.

When the bearing is assembled, the lower end of the guide sleeve 11 is placed in an inner hole of the shaft to be assembled, so that the function of guiding the pressing sleeve 10 is achieved; use the torque spanner through the cooperation to rotate adapter 1 drives the threaded spindle 9 rotatory, and then passes through thrust bearing 3 with assist the cooperation of thrust bearing 5 and make the pressure sleeve 10 downstream, its edge with treat that the assembly bearing inner ring cooperatees, will treat that the assembly bearing is impressed epaxially.

In a possible embodiment, the thrust bearing 3 and the auxiliary thrust bearing 5 are planar ball thrust bearings.

In a possible embodiment, the upper plane of the thrust bearing 3 cooperates with the threaded shaft 9, the lower plane thereof does not cooperate with the threaded shaft 9, but with the bearing seat 4; the upper plane of the auxiliary power bearing 5 is not matched with the threaded shaft 9 but matched with the auxiliary bearing seat 6, and the lower plane of the auxiliary power bearing is matched with the threaded shaft 9. The existence of the thrust bearing 3 and the auxiliary thrust bearing 5 can smoothly transmit the axial force generated by screwing the threaded shaft 9 into the fixed shaft 12 to the pressing sleeve 10.

In a possible embodiment, the fixed shaft 12 and the base 13 may be detachably connected by bolts or fixedly connected by welding.

In one possible embodiment, the adapter 1 has a square hole for connection to a universal torque wrench, with which the threaded shaft 9 can be screwed into the fixed shaft 12 with a defined torque through the adapter 1.

In a possible embodiment, pins are symmetrically fixed on the side surface of the guide sleeve 11, the pressing sleeve 10 is provided with a corresponding long hole, and the pressing sleeve 10 and the guide sleeve 11 can realize relative sliding.

The utility model has the beneficial effects that: the bearing assembling tool designed by the utility model is convenient to use, simple to operate, safe and reliable. Can be steady press in the axial on the axle, and can discern the abnormal conditions in the assembling process when using.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention

FIG. 2 is a schematic diagram of the operation of the preferred embodiment of the present invention

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.

As shown in fig. 1, a bearing assembling tool includes an adapter 1, a first washer 2, a thrust bearing 3, a bearing seat 4, an auxiliary thrust bearing 5, an auxiliary bearing seat 6, a second washer 7, a nut 8, a threaded shaft 9, a pressing sleeve 10, a guide sleeve 11, a fixed shaft 12, and a base 13;

In the working process of the utility model, as shown in figure 2, a shaft to be assembled is placed on a base 13 through a fixed shaft 12, a threaded shaft 9 with other parts is screwed into the fixed shaft 12, a guide sleeve 11 is placed in an inner hole of the shaft, and a pressing sleeve 10 is pressed on an inner ring of a bearing.

The required axial force is calculated by the interference between the bearing and the shaft, and the maximum torque applied through the adapter 1 is calculated. The threaded shaft 9 is screwed into the fixed shaft 12 at a constant speed by using a universal torque wrench through the adapter 1, and then the bearing inner ring is pressed into the shaft through the pressing sleeve 10. When the torque of the torque wrench exceeds the calculated torque, the assembly is abnormal, and the assembly needs to be stopped for inspection.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equally replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application, and are intended to be included within the scope of the present application.

Claims

1. A bearing assembling tool is characterized by comprising an adapter (1), a first washer (2), a thrust bearing (3), a bearing seat (4), an auxiliary thrust bearing (5), an auxiliary bearing seat (6), a second washer (7), a nut (8), a threaded shaft (9), a pressing sleeve (10), a guide sleeve (11), a fixed shaft (12) and a base (13);

the base (13) is fixed on a horizontal plane, and the fixed shaft (12) is vertically connected onto the base (13); the fixed shaft (12) is of a hollow structure, wherein an internal thread is formed in a cavity; the lower end of the threaded shaft (9) is connected with the internal thread of the hollow cavity of the fixed shaft (12) in a matching way, the upper end of the threaded shaft is connected with the adapter (1) in a threaded way, and the adapter (1) is used for matching with a torque wrench so as to drive the threaded shaft (9) to rotate; the middle part of the threaded shaft (9) is sleeved with a round cap-shaped pressing sleeve (10) with a through hole in the center, and the connection with the threaded shaft (9) is realized through the thrust bearing (3) arranged above the pressing sleeve and the auxiliary thrust bearing (5) arranged below the pressing sleeve; the upper end face of the thrust bearing (3) is tightly pressed with the step face at the upper part of the threaded shaft (9) through the first gasket (2), and the lower end of the thrust bearing is connected with the pressing sleeve (10) through the bearing seat (4); the upper end of the auxiliary power bearing (5) is connected with the pressing sleeve (10) through the auxiliary bearing seat (6), and the lower end face of the auxiliary power bearing is tightly pressed with the nut (8) sleeved on the threaded shaft (9) through the second gasket (7);

the upper end of the guide sleeve (11) is connected with the pressing sleeve (10) through a pin.

2. A bearing assembly tool according to claim 1, characterized in that the thrust bearing (3) and the auxiliary thrust bearing (5) are flat ball thrust bearings.

3. A bearing assembly tool according to claim 2, characterized in that the thrust bearing (3) has an upper flat surface which cooperates with the threaded shaft (9) and a lower flat surface which does not cooperate with the threaded shaft (9) but with the bearing seat (4); the upper plane of the auxiliary power bearing (5) is not matched with the threaded shaft (9) but matched with the auxiliary bearing seat (6), and the lower plane of the auxiliary power bearing is matched with the threaded shaft (9).

4. A bearing assembly tool according to claim 1, characterized in that the stationary shaft (12) and the base (13) are detachably connected by means of bolts or fixedly connected by means of welding.

5. A bearing assembly tool according to claim 1, characterized in that the adapter (1) has a square hole for connection with a universal torque wrench, with which the threaded shaft (9) can be screwed into the stationary shaft (12) with a defined torque through the adapter (1).

6. The bearing assembling tool according to claim 1, wherein pins are symmetrically fixed on the side surface of the guide sleeve (11), the pressing sleeve (10) is provided with a corresponding long hole, and the pressing sleeve (10) and the guide sleeve (11) can realize relative sliding.