CN216152286U

CN216152286U - Bearing play eliminating device under visual torque

Info

Publication number: CN216152286U
Application number: CN202122280886.8U
Authority: CN
Inventors: 王天宇; 杨文博; 马海君; 罗士红; 常虹
Original assignee: AECC Harbin Dongan Engine Co Ltd
Current assignee: AECC Harbin Dongan Engine Co Ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-04-01
Anticipated expiration: 2031-09-18

Abstract

The utility model belongs to the field of assembly, and relates to a bearing clearance eliminating device under a visual moment. The device comprises: three-layer support, locating rack, spring housing, loose piece, C type activity handle housing screw, screw rod.

Description

Bearing play eliminating device under visual torque

Technical Field

The utility model belongs to the field of assembly, and relates to a bearing clearance eliminating device under a visual moment.

Background

After the bearing is installed at the matched journal of the driving bevel gear and the related bearing seat is perfectly assembled, the residual gap between the bearing and the installation seat after the adjustment pad is selected and used is measured under the condition that the bearing clearance is eliminated, and the gap is controlled to meet the requirement of a pattern. The clamping tools conventionally used for eliminating the bearing play have the following drawbacks: the whole framework of the tool is a transverse structure, so that the influence on whether the original clearance of the bearing exists or not and the unstable factors exist in the transverse state after the tool clamps parts and components, and the accuracy of a measuring result is influenced; in addition, when the original tool eliminates the clearance of the driving bevel gear assembly structure bearing, the mode of applying rotary stress to the end face of the driving bevel gear shaft journal is adopted, and the tool stops until the rotary structure reaches a top dead state, as shown in figure 1, no specific requirements on loading torque exist in the process, and the risk of damaging the bearing due to improper stress application exists.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the risk of damaging the bearing due to improper stress application is eliminated.

The technical scheme is as follows:

a bearing play elimination apparatus under visual torque, comprising: the three-layer bracket, the positioning frame, the spring sleeve, the movable block, the C-shaped movable handle compression screw and the screw rod are arranged;

the positioning frame is of a cylindrical barrel structure with a tray at one end, the positioning frame is provided with a central hole, the tray is installed in a through hole in the top layer of the three-layer support, the cylindrical barrel extends downwards, and a side arm of the cylindrical barrel is provided with a first vertical groove; the movable block is of a cylindrical structure with an opening at the upper end, a second vertical groove is formed in the position, corresponding to the first vertical groove, of the movable block, and the cylindrical barrel of the positioning frame is used as a sliding rail of the movable block; one end of the spring props against the bottom surface of the movable block and is sleeved in the spring sleeve, the other end of the spring props against the spring sleeve, and the back surface of the spring sleeve base is used for bearing the gravity from the end surface of the shaft neck of the driving bevel gear assembly; the inner hexagonal cylindrical end set screw sequentially extends into the first vertical groove and the second vertical groove to be fixedly connected with the spring sleeve; the screw rod penetrates through the middle layer of the three layers of supports from bottom to top and is in threaded connection with the central hole of the middle layer plate; the top end of the screw rod is fixed with the loose piece.

The side wall of the movable block is provided with a scale groove, and the scales in the scale groove are 0N, 30N and 50N; the lower end surface of the spring sleeve is used as an indicator; after the bevel gear assembly is installed on the device, the whole device is in an initial state, and the indicating index is on the scale of 0N.

And the positioning frame cylindrical barrel is provided with an avoiding hole for avoiding the scale groove.

The three-layer bracket comprises a bottom plate, a middle plate, a positioning plate, an upper upright post and a lower upright post;

the upper upright column fixedly connects the positioning plate with the middle plate; the middle plate and the bottom plate are fixedly connected by the lower upright post.

The positioning plate is used for fastening a bevel gear bearing seat in the driving bevel gear assembly; the shape of the positioning plate is matched with the step surface of the driving bevel gear component of the part.

Further comprising: a handle; the handle is fixed at the tail end of the screw rod.

The first vertical slot is shorter than the second vertical slot.

Has the advantages that: the central driving bevel gear component in the installation state is applied with thrust in a vertical state, so that the purpose of eliminating bearing play is achieved in a natural state, and the magnitude of the applied force is expressed in a line marking mode and is visual and intuitive.

Drawings

FIG. 1 is a schematic view of a bevel gear assembly.

FIG. 2 is a schematic view of the bevel gear assembly in the direction of force.

Fig. 3 is a view showing a structure of the bearing play eliminating device under a visual moment.

Detailed Description

A bearing play elimination device under visual moment is characterized by comprising: the three-layer bracket, the positioning frame 4, the spring 7, the spring sleeve 8, the loose piece 9, the C-shaped movable handle compression screw 10 and the screw 16;

the positioning frame 4 is a cylindrical barrel structure with a tray at one end, the positioning frame is provided with a central hole, the tray is arranged in a through hole at the top layer of the three-layer bracket, the cylindrical barrel extends downwards, and a side arm of the cylindrical barrel is provided with a first vertical groove; the movable block 9 is of a cylindrical structure with an opening at the upper end, a second vertical groove is formed in the position, corresponding to the first vertical groove, of the movable block 9, and the cylindrical barrel of the positioning frame is used as a sliding rail of the movable block; one end of the spring 7 props against the bottom surface of the movable block and is sleeved in the spring sleeve 8, the other end of the spring 7 props against the spring sleeve 8, and the back surface of the base of the spring sleeve 8 is used for bearing the gravity from the end surface of the shaft neck of the driving bevel gear assembly; the inner hexagonal cylindrical end set screw 11 sequentially extends into the first vertical groove and the second vertical groove to be fixedly connected with the spring sleeve 8; the screw 16 passes through the middle layer of the three-layer bracket from bottom to top and is in threaded connection with the central hole of the middle layer plate; the top end of the screw rod is fixed with the loose piece.

The side wall of the movable block is provided with a scale groove, and the scales in the scale groove are 0N, 30N and 50N; the lower end surface of the spring sleeve 8 is used as an indicator; after the bevel gear assembly is installed on the device, the whole device is in an initial state, and the indicating index is on the scale of 0N.

And the cylindrical barrel of the positioning frame 4 is provided with an avoiding hole for avoiding the scale groove.

The three-layer bracket comprises a bottom plate 1, a middle plate 2, a positioning plate 3, an upper upright post 5 and a lower upright post 6;

the upper upright post 5 fixedly connects the positioning plate 3 and the middle plate 2; the middle plate 2 and the bottom plate 1 are fixedly connected by the lower upright post 6.

The positioning plate 3 is used for fastening a bevel gear bearing seat in the driving bevel gear assembly; the shape of the positioning plate 3 is matched with the step surface of the driving bevel gear component of the part.

The device also includes: a handle 17; a handle 17 is fixed to the rear end of the screw 16.

The first vertical slot is shorter than the second vertical slot.

The present embodiment eliminates the bearing play of the drive bevel gear assembly (see fig. 1) in the upright state by the present device (see fig. 3).

The basic working principle is as follows: the driving bevel gear assembly is inversely arranged (as shown in figure 2) and is arranged on a positioning plate in the device, and simultaneously, the driving bevel gear assembly and the driving bevel gear assembly are fixedly connected with the positioning plate through a mounting hole of a bevel gear bearing seat in the bevel gear assembly. The device is designed with 0N scale marks, the gravity of the bevel gear assembly acts on the spring sleeve in a natural state, and the spring sleeve moves downwards just to reach a zero state. Then, an operator rotates the handle 17 clockwise, the threaded rod 16 steps upwards to push the movable block 9 to slide upwards in the positioning frame 4 and compress the spring 7, the elastic force simultaneously acts on the spring sleeve 8 fixed by the inner hexagonal cylinder end fastening screw 11, the lower end surface of the sleeve is just the magnitude of the corresponding force when being flush with the scribed line through checking in the upward movement process of the movable block, the cylindrical upper end of the movable block moves upwards and just props against the stepped surface of the shaft neck of the bevel gear in the driving bevel gear assembly to realize the upward force application of the bevel gear, the bearing seat and the bevel gear seat of the bevel gear are fixed, because of the interference fit between the bearing and the shaft neck, the inner ring of the bearing moves upwards along with the bevel gear, and the outer ring of the bearing keeps fixed due to the limit of the mounting seat, finally, the device can achieve the purpose of eliminating the bearing clearance in the bevel gear assembly by utilizing the spring elastic force capable of monitoring the magnitude in real time, meanwhile, by arranging force application scale lines, the magnitude of the applied force is controlled not to exceed the upper limit, and the purpose of protecting the bearing with the highest failure rate in the component is achieved.

Claims

1. A bearing play elimination device under visual moment is characterized by comprising: the three-layer bracket, a positioning frame (4), a spring (7), a spring sleeve (8), a loose piece (9), a C-shaped movable handle compression screw (10) and a screw rod (16);

the positioning frame (4) is of a cylindrical barrel structure with a tray at one end, the positioning frame is provided with a central hole, the tray is arranged in a through hole in the top layer of the three-layer bracket, the cylindrical barrel extends downwards, and a side arm of the cylindrical barrel is provided with a first vertical groove; the movable block (9) is of a cylindrical structure with an opening at the upper end, a second vertical groove is formed in the position, corresponding to the first vertical groove, of the movable block (9), and the cylindrical barrel of the positioning frame is used as a sliding rail of the movable block; one end of the spring (7) props against the bottom surface of the movable block and is sleeved in the spring sleeve (8), the other end of the spring (7) props against the spring sleeve (8), and the back surface of the base of the spring sleeve (8) is used for bearing the gravity from the end surface of the shaft neck of the driving bevel gear assembly; a fastening screw (11) at the end of the inner hexagonal cylinder sequentially extends into the first vertical groove and the second vertical groove to be fixedly connected with the spring sleeve (8); the screw rod (16) penetrates through the middle layer of the three layers of supports from bottom to top and is in threaded connection with the central hole of the middle layer plate; the top end of the screw rod is fixed with the loose piece.

2. The device according to claim 1, wherein the side wall of the movable block is provided with a scale groove, and the scales in the scale groove are 0N, 30N and 50N; the lower end surface of the spring sleeve (8) is used as an indicator; after the bevel gear assembly is installed on the device, the whole device is in an initial state, and the indicating index is on the scale of 0N.

3. The device according to claim 2, characterized in that the cylindrical barrel of the positioning frame (4) is provided with an avoiding hole for avoiding the scale groove.

4. The device according to claim 1, characterized in that the three-layer bracket comprises a bottom plate (1), a middle plate (2), a positioning plate (3), an upper upright (5) and a lower upright (6);

the upper upright post (5) fixedly connects the positioning plate (3) and the middle plate (2); the middle plate (2) is fixedly connected with the bottom plate (1) through the lower upright post (6).

5. The device according to claim 2, characterized in that the positioning plate (3) is used for fastening a bevel gear bearing block in the drive bevel gear assembly; the shape of the positioning plate (3) is matched with the step surface of the driving bevel gear component of the part.

6. The apparatus of claim 1, further comprising: a handle (17); the handle (17) is fixed at the tail end of the screw rod (16).

7. The apparatus of claim 1, wherein the first vertical slot is shorter than the second vertical slot.