CN220575793U - Bearing pre-tightening tool and adjusting gasket - Google Patents

Abstract

The application provides a bearing pretension frock and adjustment gasket relates to bearing assembly technical field. The bearing pre-tightening tool comprises a pre-tightening pressing block and an adjusting piece; a plurality of supporting legs which are arranged at intervals are arranged around one side of the pre-tightening pressing block, and the supporting legs are used for being abutted with the inner ring of the bearing to be pre-tightened; the adjusting piece is arranged on the pre-tightening pressing block and connected with a base body for installing the bearing, and the adjusting piece is used for adjusting the axial distance between the pre-tightening pressing block and the base body in the bearing. The bearing pre-tightening tool is simple in structure, low in requirements on sites and equipment without using external press-fitting equipment, simple and convenient to operate and convenient to maintain in the later period.

Description

Bearing pre-tightening tool and adjusting gasket

Technical Field

The application relates to the technical field of bearing assembly, in particular to a bearing pre-tightening tool and an adjusting gasket.

Background

When the bearing components such as the angular contact bearing and the tapered roller bearing are installed, the inner ring of the bearing is contacted with the shaft, and in order to make the contact (stress) of the bearing roller path uniform and improve the service life, the bearing is usually required to be axially preloaded. Common pre-tightening modes are: screw pretension, adjusting gasket pretension, round nut pretension, circlip pretension and the like.

The adjusting gasket pre-tightening mode is to control the axial clearance (negative installation clearance) of the bearing by utilizing the grading adjusting gaskets, so that the bearing pre-tightening is realized. The adjusting gasket is usually installed in the clamping groove, so that a split design is adopted, and most practical applications are two-split structures. During the installation process, an axial force and a radial force are required to be given to the adjusting gasket so that the adjusting gasket can be smoothly inserted into the clamping groove. Therefore, the adjusting gasket is usually assembled by adopting special press equipment, has higher requirements on sites and equipment, is complex to operate and is inconvenient for later maintenance.

Disclosure of Invention

The utility model aims at providing a bearing pretension frock and adjustment gasket for solve the not enough that exists among the prior art.

To achieve the above object, in a first aspect, the present application provides a bearing pre-tightening tool, including:

the bearing pre-tightening device comprises a pre-tightening pressing block, wherein one side of the pre-tightening pressing block is circumferentially provided with a plurality of supporting legs which are arranged at intervals, and the supporting legs are used for being abutted with an inner ring of a bearing to be pre-tightened; and

the adjusting piece is arranged on the pre-compression block and used for being connected with a base body for installing the bearing, and the adjusting piece is used for adjusting the axial distance between the pre-compression block and the base body in the bearing.

As a further improvement of the above technical scheme:

with reference to the first aspect, in one possible implementation manner, the support leg is detachably connected with the pre-tightening pressing block.

With reference to the first aspect, in one possible implementation manner, the bearing pre-tightening tool further includes a plurality of fasteners, and a first strip hole is provided on the pre-tightening block corresponding to each of the supporting legs, and the first strip hole extends along a radial direction of a ring formed by the plurality of supporting legs;

the fastening piece penetrates through the first strip-shaped hole to be connected with the supporting leg, and the fastening piece is used for selectively fixing the supporting leg on the pre-tightening pressing block.

With reference to the first aspect, in a possible implementation manner, the bearing pre-tightening tool further includes a plurality of fasteners, and the support leg is provided with a second elongated hole, and the second elongated hole extends along a radial direction of a ring formed by a plurality of support legs;

the fastening piece sequentially penetrates through the pre-tightening pressing block and the corresponding second strip-shaped hole, and the fastening piece is used for selectively fixing the supporting leg on the pre-tightening pressing block.

With reference to the first aspect, in one possible implementation manner, the bearing pre-tightening tool further includes a plurality of fasteners, and a first strip hole is provided on the pre-tightening block corresponding to each of the supporting legs, and the first strip hole extends along a radial direction of a ring formed by the plurality of supporting legs;

the support leg is provided with a second strip hole corresponding to the first strip hole, and the second strip hole extends along the radial direction of a circular ring formed by a plurality of support legs;

wherein the fastener is disposed through the first elongated aperture and the second elongated aperture, the fastener for selectively securing the leg to the pretension compact.

With reference to the first aspect, in one possible implementation manner, the pre-compression block is provided with a pre-compression hole corresponding to each supporting leg, and the adjusting piece is arranged in each pre-compression hole.

With reference to the first aspect, in one possible implementation manner, a plurality of the supporting legs are distributed at equal intervals on the pre-tightening pressing block.

With reference to the first aspect, in a possible implementation manner, the support leg includes:

the supporting leg body is arranged on the pre-tightening pressing block; and

and the supporting leg is detachably arranged at one end of the supporting leg body, which is far away from the pre-tightening pressing block.

Optionally, the supporting leg and the supporting leg body are in clamping fit, inserting fit, threaded fit, screw connection fit or magnetic connection fit.

With reference to the first aspect, in a possible implementation manner, the adjusting member is rotatably disposed on the pre-tightening pressing block and is used for being in threaded engagement with the base body.

In order to achieve the above object, in a second aspect, the present application further provides an adjusting gasket, configured to cooperate with the bearing pre-tightening tool provided in the first aspect to pre-tighten the bearing, where the adjusting gasket includes gasket flaps corresponding to the number of the supporting legs, and a first fit gap and a second fit gap which are formed between every two adjacent gasket flaps in a radial direction, wherein the first fit gap and the second fit gap are communicated from inside to outside;

the width of the first fit clearance is smaller than that of the second fit clearance, and the second fit clearance is used for avoiding the supporting leg.

Compared with the prior art, the beneficial effect of this application:

the application provides a bearing pretension frock and adjustment gasket, wherein, bearing pretension frock is when using, earlier with the bearing suit on the base member, place the base member axial terminal surface in the pretension piece again and make all landing legs all contact with the terminal surface of the inner circle of bearing, then be connected regulating part and base member, further adjust pretension briquetting and base member at the axial interval of bearing through the regulating part, make the pretension piece support through the landing leg and push away the whole axial displacement of bearing, until the bearing removes to predetermine the assembly position, then install adjustment gasket in the pretension groove of base member. From this, the bearing pretension frock simple structure that this application provided need not to realize the axial pretension assembly of bearing with the help of outside pressure equipment, and is not high to place and equipment requirement, and simple operation is convenient, makes things convenient for the maintenance in later stage.

Additional features and advantages of the present application will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate only some embodiments of the application and are therefore not to be considered limiting of its scope, for the purpose of providing additional related drawings from which the utility model may be practiced by those of ordinary skill in the art without the exercise of inventive faculty. In the drawings:

FIG. 1 is a schematic view of a bearing set according to the present application when the bearing set is mounted to a base and not mounted to a predetermined assembly position;

fig. 2 is a schematic structural diagram of a bearing pretensioning tool according to an embodiment of the present disclosure when pushing a bearing to a preset assembly position;

FIG. 3 is a schematic view showing a structure in which a bearing is sleeved on a base body and an adjusting gasket is mounted;

FIG. 4 is a schematic structural view of an adjusting pad according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram showing a state when one shim piece of the adjusting shim provided in the first embodiment of the present application is inserted into the bearing pre-tightening tool;

fig. 6 is a schematic structural diagram of the cooperation between the adjusting gasket and the bearing pre-tightening tool according to the first embodiment of the present application;

fig. 7 is a schematic structural view of a bearing pretensioning tool according to a second embodiment of the present application, in which a support leg does not extend out relative to a pretensioning block;

FIG. 8 shows a schematic view of the structure of the bearing pretensioning tool shown in FIG. 7, in which the legs are extended relative to the pretensioning blocks;

fig. 9 is a schematic structural view of a bearing pretensioning tool according to a third embodiment of the present disclosure, in which a support leg extends out relative to a pretensioning block;

fig. 10 is a schematic structural view of a support leg extending out of a pre-compression block in a bearing pre-compression tool according to a fourth embodiment of the present application;

FIG. 11 is a schematic view showing the construction of the bearing pretensioning tool of FIG. 10 pushing the bearing to a predetermined assembly position;

fig. 12 shows a partial cross-sectional view of a bearing pre-tightening tool provided in a fifth embodiment of the present application.

Reference numerals illustrate:

10. a bearing; 11. an inner ring;

20. a base; 21. a pre-tightening groove;

30. a bearing seat;

100. pre-tightening a pressing block; 101. virtual circles; 110. a ventral surface; 120. a back face; 130. a pre-tightening hole; 140. a first elongated aperture;

200. an adjusting member;

300. a support leg; 301. a second elongated aperture; 310. a leg body; 320. support legs;

400. a fastener;

500. adjusting the gasket; 510. a shim flap; s, a first fit clearance; w, second fit clearance.

Detailed Description

The following describes in detail the implementation of the embodiments of the present application with reference to the accompanying drawings. It should be understood that the detailed description is presented herein by way of illustration and explanation of the present application examples, and is not intended to limit the present application examples.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

In the embodiments of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

The present application will be described in detail below with reference to the attached drawings in conjunction with exemplary embodiments.

Example 1

Referring to fig. 1 to 6, the present embodiment provides a bearing pre-tightening tool, which can be used for axial pre-tightening assembly of a bearing 10 installed on a base 20, so as to ensure that the bearing 10 is kept at a preset working position during operation, limit axial movement of the bearing 10, make contact (stress) of a raceway of the bearing 10 uniform, and improve the service life.

Wherein the substrate 20 is an axle. The bearing 10 may be selected from angular contact bearings, tapered roller bearings, and the like.

Referring to fig. 1 and 2, in the present embodiment, the bearing pre-tightening tool includes a pre-tightening block 100 and an adjusting member 200. Wherein the pretensioned compact 100 has opposite web faces 110 and back faces 120 in the thickness direction thereof. The pre-compression block 100 is in use, with the web face 110 of the pre-compression block 100 facing the end face of the substrate 20.

Further, the web surface 110 of the pre-compression block 100 is provided with a plurality of legs 300 for abutting against the inner race 11 of the bearing 10, the plurality of legs 300 being circumferentially spaced apart at the web surface 110, whereby the plurality of legs 300 form a virtual ring 101. That is, the plurality of legs 300 are spaced apart along the circumference of the ring 101 (see fig. 5).

It should be noted that, the diameter of the inscribed circle 1 formed tangentially to the inner sides of the plurality of legs 300 is greater than or equal to the inner diameter of the inner ring 11 of the bearing 10, so as to ensure that the legs 300 do not interfere with the outer cylindrical surface of the base 20 when abutting against the inner ring 11 of the bearing 10.

The adjusting member 200 is disposed on the pre-compression block 100 and is used for being connected with the base 20 on which the bearing 10 is mounted, and the adjusting member 200 is used for adjusting the distance between the pre-compression block 100 and the base 20 in the axial direction of the bearing 10 so as to adjust the thrust force of the supporting leg 300 to the inner ring 11 of the bearing 10.

It will be appreciated that when the spacing between the pre-compression block 100 and the base 20 in the axial direction of the bearing 10 is reduced, the thrust imparted by the legs 300 to the inner race 11 of the bearing 10 increases; when the distance between the pre-pressing block 100 and the base 20 in the axial direction of the bearing 10 is increased, the thrust imparted by the leg 300 to the inner race 11 of the bearing 10 is reduced or the leg 300 is released from contact with the inner race 11 of the bearing 10.

Referring to fig. 4, 5 and 6, further, the present embodiment also provides an adjusting spacer 500, where the adjusting spacer 500 is applied to the bearing pre-tightening tool provided above, and the adjusting spacer 500 is used to be clamped in a pre-tightening groove 21 provided on the circumferential surface of the base 20 and is abutted against the inner ring 11 of the bearing 10.

The adjustment shim 500 includes shim flaps 510 corresponding in number to the legs 300, and, when assembled, a first fit gap S and a second fit gap W are formed between each adjacent two of the shim flaps 510 in the radial direction from inside to outside and are communicated. Wherein the width of the first fit-on gap S is smaller than the width of the second fit-on gap W for avoiding the leg 300.

Thus, when the bearing 10 is pushed against to the preset assembling position, the pre-tightening groove 21 on the base 20 is not blocked by the bearing 10, and then the shim flaps 510 are sequentially inserted into the pre-tightening groove 21 between each two adjacent legs 300 until all the shim flaps 510 are completely inserted.

It will be appreciated that the width of the second mating gap W is greater than the width of the leg 300, as the leg 300 itself has a certain width. Further, since the width of the second fit gap W is larger, the adjusting shim 500 is moved to cause vibration and noise after being mounted, and in order to prevent the adjusting shim 500 from being moved to cause vibration and noise after being mounted, the width of the first fit gap S may be smaller than the width of the second fit gap W, or may be much smaller than the width of the second fit gap W, so as to prevent the adjusting shim 500 from moving after the shim flap 510 is mounted.

Referring to fig. 1, 2 and 3, the method for using the bearing pre-tightening tool provided in the embodiment is as follows:

first, the bearing 10 is put into the bearing seat 30 and sleeved on the base 20 together;

secondly, placing the pre-pressed block 100 on the end face of the base 20 and enabling all the supporting legs 300 to be in contact with the end face of the inner ring 11 of the bearing 10;

thirdly, connecting the adjusting member 200 with the base 20;

fourth, adjusting the adjusting member 200 to reduce the interval between the pre-pressing block 100 and the base 20, thereby pushing the bearing 10 to move along the axial direction of the base 20 through the supporting leg 300 until the bearing 10 moves to the preset assembling position, and completing the pre-pressing of the bearing 10;

fifthly, after pre-tightening, measuring the mounting clearance to select an adjusting gasket 500 with a proper grade, or determining the grade of the adjusting gasket 500 by trial assembly of a standard size block;

sixthly, installing an adjusting gasket 500 with a proper grade, specifically installing the adjusting gasket 500 in a pre-tightening groove 21 on the outer peripheral surface of the base body 20, so that the adjusting gasket 500 is abutted against the inner ring 11 of the bearing 10;

seventh, adjusting the adjusting member 200 to increase the distance between the adjusting member 200 and the base 20 until the supporting leg 300 is released from abutting against the inner ring 11, and then removing the bearing pre-tightening tool, thereby completing the axial pre-tightening of the bearing 10.

In this embodiment, the adjusting member 200 is rotatably provided on the pre-compression block 100 and is adapted to be screw-engaged with the base 20. Specifically, the adjusting member 200 includes a screw portion and a screw connection portion integrally connected. Wherein the screw is located on the side of the pre-compression block 100 remote from the leg 300, i.e. on the back face 120. The end face of the base 20 is provided with a threaded hole, and the threaded connection portion is matched with the threaded hole arranged on the end face of the base 20. Thus, the size of the gap between the pre-compression block 100 and the end surface of the base 20 can be adjusted by screwing the screw.

Alternatively, the adjustment member 200 may be selected as a screw or bolt. The screwing part is a nut head, and the threaded connection part is a screw rod part.

In some embodiments, the adjusting member includes a screw disposed through the pre-compression block 100, the screw being connected to a threaded hole disposed on an end surface of the base 20 at an end of the pre-compression block 100 near the leg 300, and an adjusting nut disposed on the screw, the adjusting nut being located on a side of the pre-compression block 100 away from the leg 300, i.e., on the back face 120, the adjusting nut abutting against the back face 120 of the pre-compression block 100. Thereby, the method is used for the treatment of the heart disease. The amount of spacing between the pre-compression block 100 and the end face of the base 20 can be adjusted by tightening the nut.

In the fourth step, the axial play and the pre-pressing force of the bearing 10 are values set when the bearing 10 is shipped, and thus the values can be converted into torque at the time of screwing the adjuster 200 by calculation.

Further, in the present embodiment, the length of the leg 300 may be set according to the distance from the preset assembly position of the bearing 10 on the base 20 to the end face of the base 20, and the length of the leg 300 is not specifically limited in the present embodiment.

In some embodiments, the legs 300 are of unitary construction with the pre-compression block 100.

In other embodiments, the legs 300 are detachably connected to the pre-compression block 100, whereby the adapted legs 300 can be replaced according to the distance from the pre-set assembly position to the end face of the base body 20. Alternatively, the legs 300 are snap fit, socket fit, screw connection fit or magnetic connection fit with the pre-compression block 100.

Further, in order to improve stability of the supporting leg 300 pushing against the bearing 10, better uniformity of stress of the bearing 10 is ensured, the supporting leg 300 comprises at least three supporting legs 300, and the at least three supporting legs 300 are uniformly distributed along the circumference of the circular ring 101. In the illustration of the present embodiment, a bearing pretensioning tool provided with three legs 300 is shown. Of course, in some embodiments, the legs 300 may be provided in four, five, six, or other numbers. It is to be understood that this embodiment is by way of example only and is not intended as a limitation on the scope of the present application.

In some embodiments, the pre-pressing block 100 is provided with a pre-pressing hole 130 corresponding to each supporting leg 300, the end face of the bearing 10 is provided with a corresponding threaded hole corresponding to each pre-pressing hole 130, and an adjusting piece 200 is arranged in each pre-pressing hole 130, so that the bearing 10 is more uniformly stressed when being propped against, and the stability of the bearing pre-pressing tool is more reliable.

Compared with the prior art, the bearing pre-tightening tool provided by the embodiment is simple in structure, can realize axial pre-tightening assembly of the bearing without using external press mounting equipment, has low requirements on sites and equipment, is simple and convenient to operate, and is convenient for later maintenance.

Example two

Referring to fig. 7 and 8, the present embodiment provides a bearing pre-tightening tool. The bearing pretension frock that this embodiment provided is based on the improvement that the technique of above-mentioned embodiment first was made, compares above-mentioned embodiment first, and the difference lies in:

in this embodiment, the leg 300 is detachably connected to the pre-compression block 100.

Specifically, the bearing pre-tightening tool further includes a plurality of fasteners 400, and the pre-tightening press block 100 is provided with a first elongated hole 140 corresponding to each of the supporting legs 300, where the first elongated hole 140 extends along a radial direction of the circular ring 101 (refer to fig. 5), and the first elongated hole 140 is penetrated and arranged by a thickness direction of the pre-tightening press block 100.

A fastener 400 is connected to the leg 300 through the first elongated hole 140, the fastener 400 being used to selectively secure the leg 300 to the pre-compression block 100. It will be appreciated that in this embodiment, the diameter of the ring 101 formed by the leg 300 may be adjusted according to the diameter of the base 20 and the size of the bearing 10. Specifically, when the diameter of the ring 101 formed by the leg 300 needs to be adjusted, the fixing of the leg 300 is released by adjusting the fastener 400, so that the leg 300 can move along the first elongated hole 140, and when the leg 300 moves to a preset position, the fastener 400 is adjusted again, so that the leg 300 and the pre-compression block 100 are fixed together, and the movement of the leg 300 is limited.

Wherein the pre-tightening hole 130 is disposed at a central position of the pre-tightening block 100 or other positions avoiding the leg 300.

Alternatively, the fastener 400 may be selected from a screw or a combination of a bolt and a nut.

The bearing pre-tightening tool provided by the embodiment can be adaptively adjusted according to the size of the inner ring 11 of the bearing 10 or the diameter size of the matrix 20, and has better universality and better practicability.

Example III

Referring to fig. 9, the present embodiment provides a bearing pre-tightening tool. The bearing pretension frock that this embodiment provided is based on the improvement that the technique of above-mentioned embodiment first was made, compares above-mentioned embodiment first, and the difference lies in:

in this embodiment, the leg 300 is detachably connected to the pre-compression block 100. The bearing pre-tightening tool also includes a plurality of fasteners 400.

Wherein, locking holes are arranged on the pre-tightening pressing block 100 corresponding to each supporting leg 300. The leg 300 is provided with a second elongated hole 301 extending in the radial direction of the ring 101. Fasteners 400 are disposed sequentially through the corresponding locking apertures and the second elongated apertures 301, the fasteners 400 being used to selectively secure the legs 300 to the pre-compression block 100.

It will be appreciated that in this embodiment, the diameter of the ring 101 (see fig. 5) formed by the leg 300 can be adjusted according to the diameter of the base 20 and the size of the bearing. Specifically, when the diameter of the ring 101 formed by the leg 300 needs to be adjusted, the fastening piece 400 is adjusted to release the fixing of the leg 300, so that the leg 300 can move along the length direction of the second elongated hole 301 relative to the fastening piece 400, and when the leg 300 moves to a preset position, the fastening piece 400 is adjusted again to fix the leg 300 and the pre-compression block 100 together, so as to limit the movement of the leg 300.

Wherein the pre-tensioning hole 130 is arranged in a central position of the pre-compression block 100, in a position aligned with the second elongated hole 301 or in other positions avoiding the leg 300.

The bearing pre-tightening tool provided by the embodiment can be adaptively adjusted according to the size of the inner ring 11 of the bearing 10 or the diameter size of the matrix 20, and has better universality and better practicability.

Example IV

Referring to fig. 10 and 11, the present embodiment provides a bearing pre-tightening tool. The bearing pretension tool provided in this embodiment is an improvement based on the technology of the second embodiment or the third embodiment, and is different from the second embodiment or the third embodiment in that:

in this embodiment, a first elongated hole 140 is provided on the pre-compression block 100 corresponding to each leg 300, the first elongated hole 140 extends along the radial direction of the ring 101, and the first elongated hole 140 is penetrated and arranged in the thickness direction of the pre-compression block 100. Wherein the pre-tightening hole 130 coincides with the first elongated hole 140. The leg 300 is provided with a second elongated hole 301 extending in the radial direction of the ring 101. Thus, the adjusting member 200 and the fastening member 400 are disposed in the corresponding first and second elongated holes 140 and 301, respectively, thereby reducing the punching process of the pre-compression block 100.

Example five

Referring to fig. 12, the present embodiment provides a bearing pre-tightening tool. The bearing pre-tightening tool provided in this embodiment is an improvement based on the technology of any one of the second to fourth embodiments, and is different from any one of the second to fourth embodiments in that:

in this embodiment, the leg 300 includes a leg body 310 and a support leg 320. The leg body 310 is disposed on the pre-compression block 100. Specifically, the leg body 310 and the pre-compression block 100 are connected together by the fastener 400. The support legs 320 are detachably provided at an end of the leg body 310 remote from the pre-compression block 100. Thus, different axial mounting depths of the bearing 10 can be accommodated by changing support legs 320 of different length dimensions.

Optionally, the support leg 320 is a snap fit, a plug fit, a screw connection fit, or a magnetic connection fit with the leg body 310.

Wherein, the scheme of joint cooperation can be: the end of the supporting leg body 310 is provided with a clamping groove, the supporting leg 320 is provided with a convex clamping block, and the clamping block is clamped into the clamping groove to realize clamping fit between the supporting leg 320 and the supporting leg body 310.

The plugging and matching scheme can be as follows: the end of the supporting leg body 310 is provided with a plug hole, the supporting leg 320 is provided with a convex plug lug, and the plug lug is inserted into the plug hole to realize plug fit between the supporting leg 320 and the supporting leg body 310.

The scheme of the screw fit can be as follows: screw holes are formed in the end portions of the supporting leg bodies 310, protruding screw columns are arranged on the supporting legs 320, and the screw columns are screwed into the screw holes to achieve screw fit between the supporting legs 320 and the supporting leg bodies 310.

The scheme of screw connection cooperation can be: screw holes are formed in the end portions of the supporting leg bodies 310, countersunk holes are formed in the supporting legs 320, screws penetrate through the countersunk holes to be in threaded fit with the screw holes of the supporting leg bodies 310, and accordingly screw connection fit between the supporting legs 320 and the supporting leg bodies 310 is achieved.

The scheme of the magnetic connection and matching can be as follows: the end part of the supporting leg body 310 is provided with a first magnetic attraction piece, the supporting leg 320 is provided with a second magnetic attraction piece, and the supporting leg 320 and the supporting leg body 310 are connected through the magnetic attraction of the first magnetic attraction piece and the second magnetic attraction piece, so that the magnetic connection matching of the supporting leg 320 and the supporting leg body 310 is realized.

The foregoing details of the optional implementation manner of the embodiment of the present application have been described in detail with reference to the accompanying drawings, but the embodiment of the present application is not limited to the specific details of the foregoing implementation manner, and various simple modifications may be made to the technical solution of the embodiment of the present application within the scope of the technical concept of the embodiment of the present application, and these simple modifications all belong to the protection scope of the embodiment of the present application.

Moreover, any combination of the various embodiments of the present application may be made, so long as it does not deviate from the idea of the embodiment of the present application, and it should also be regarded as the disclosure of the embodiment of the present application.

Claims (10)

1. The utility model provides a bearing pretension frock which characterized in that includes:

the device comprises a pre-compression block (100), wherein a plurality of supporting legs (300) are arranged at intervals around one side of the pre-compression block (100), and the supporting legs (300) are used for being abutted with an inner ring (11) of a bearing (10) to be pre-compressed; and

the adjusting piece (200) is arranged on the pre-pressing block (100) and is used for being connected with the base body (20) for installing the bearing (10), and the adjusting piece (200) is used for adjusting the axial distance between the pre-pressing block (100) and the base body (20) in the bearing (10).

2. Bearing pre-tightening tool according to claim 1, characterized in that the leg (300) is detachably connected to the pre-tightening block (100).

3. The bearing pre-tightening tool according to claim 2, further comprising a plurality of fasteners (400), wherein a first elongated hole (140) is provided in the pre-tightening block (100) corresponding to each of the legs (300), and the first elongated hole (140) extends along a radial direction of a ring formed by the plurality of legs (300);

wherein the fastener (400) is connected to the leg (300) through the first elongated hole (140), the fastener (400) being used to selectively secure the leg (300) to the pre-compression block (100).

4. The bearing pre-tightening tool according to claim 2, further comprising a plurality of fasteners (400), wherein the support leg (300) is provided with a second elongated hole (301), and the second elongated hole (301) extends along the radial direction of a ring formed by the plurality of support legs (300);

wherein the fastener (400) is arranged through the pre-compression block (100) and the corresponding second elongated hole (301), the fastener (400) being used for selectively securing the leg (300) to the pre-compression block (100).

5. The bearing pre-tightening tool according to claim 2, further comprising a plurality of fasteners (400), wherein a first elongated hole (140) is provided in the pre-tightening block (100) corresponding to each of the legs (300), and the first elongated hole (140) extends along a radial direction of a ring formed by the plurality of legs (300);

a second strip hole (301) is arranged on the supporting leg (300) corresponding to the first strip hole (140), and the second strip hole (301) extends along the radial direction of a circular ring formed by a plurality of supporting legs (300);

wherein the fastener (400) is arranged through the first elongated hole (140) and the second elongated hole (301), the fastener (400) being used for selectively fixing the leg (300) on the pre-compression block (100).

6. Bearing pre-tightening tool according to claim 1, characterized in that the pre-tightening blocks (100) are provided with pre-tightening holes (130) corresponding to each supporting leg (300), and each pre-tightening hole (130) is internally provided with the adjusting piece (200).

7. The bearing pre-tightening tool according to claim 1, wherein a plurality of the legs (300) are equally spaced on the pre-tightening press block (100).

8. The bearing pre-tightening tool according to any one of claims 1-7, wherein the leg (300) comprises:

a leg body (310) provided on the pre-compression block (100); and

and the supporting leg (320) is detachably arranged at one end of the supporting leg body (310) away from the pre-compression block (100).

9. Bearing pre-tightening tool according to claim 1, characterized in that the adjusting member (200) is rotatably arranged on the pre-tightening block (100) and is adapted to be screw-fitted with the base body (20).

10. An adjusting shim for cooperation with a bearing pre-tightening tool according to any one of claims 1-9 for pre-tightening the bearing (10), characterized in that the adjusting shim (500) comprises shim flaps (510) corresponding to the number of legs (300), a first and a second cooperation gap (S) being formed between each adjacent two shim flaps (510) from inside to outside and communicating in a radial direction;

wherein the width of the first fit gap (S) is smaller than the width of the second fit gap (W) for avoiding the leg (300).