CN212779945U

CN212779945U - Bearing vibration measuring instrument

Info

Publication number: CN212779945U
Application number: CN202022221146.2U
Authority: CN
Inventors: 张行
Original assignee: Wuxi Yanpu Bearing Manufacturing Co Ltd
Current assignee: Wuxi Yanpu Bearing Manufacturing Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-03-23
Anticipated expiration: 2030-09-30

Abstract

The utility model relates to a bearing vibration measuring instrument, the on-line screen storage device comprises a base, the L shape plate body, the measuring subassembly, left riser and right riser, it revolves to opposite threaded rod to rotate to install two sections between right riser and the left riser, be equipped with left movable block and right movable block on two sections screws of threaded rod respectively, threaded rod and left movable block and the equal threaded connection of right movable block, install fixed subassembly jointly on left movable block and the right movable block, fixed subassembly is including setting up left clamp splice and the right clamp splice on the left movable block, be equipped with on the left clamp splice and treat fixed bearing complex left arc recess, be equipped with on the right clamp splice and treat fixed bearing complex right arc recess, be provided with on the right movable block and order about threaded rod pivoted drive assembly. This application is when fixing or dismantling the bearing, and the staff only needs order about the threaded rod through drive assembly and rotates to this makes left movable block and right movable block be close to each other or keep away from, thereby the staff of being convenient for is fixed or is dismantled the bearing, has reduced loaded down with trivial details operation.

Description

Bearing vibration measuring instrument

Technical Field

The application relates to the technical field of bearings, in particular to a bearing vibration measuring instrument.

Background

The bearing vibration measuring instrument is a special instrument for measuring the vibration speed of deep groove ball bearings, angular contact ball bearings and tapered roller bearings. The bearing vibration measuring instrument is suitable for bearing manufacturers to detect bearing vibration, and bearing application departments such as motor factories to accept and check bearings, and colleges and universities and scientific research institutions to analyze bearing vibration.

Chinese patent that prior art's publication number is CN209459900U discloses a cylindrical roller bearing vibration measuring instrument, which comprises a mounting base, the top fixedly connected with roof of mounting panel, the middle part fixedly connected with control tube of roof bottom, the sensor is installed to the bottom of installation cover, the bottom fixedly connected with steadying plate of drive pole, fixedly connected with shrink spring between drive pole and the installation cover, install fastening bolt between fixed plate and the fly leaf, be provided with the bearing between fixed plate and the fly leaf, and the left side of just adjusting the trachea bottom is linked together through air duct and the left top of control tube, adjust tracheal inner chamber and install the piston.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: when the staff is fixing or dismantling the bearing, need frequently twist fastening bolt to this makes fly leaf and fixed plate be close to each other or keep away from, and the operation is comparatively loaded down with trivial details.

SUMMERY OF THE UTILITY MODEL

In order to fix or dismantle the bearing for the convenience, this application provides a bearing vibration measuring instrument.

The application provides a bearing vibration measuring instrument adopts following technical scheme:

bearing vibration measuring instrument, including base, the L shaped plate body of surface mounting with the base upper surface and set up the measuring subassembly on L shaped plate body, the surface mounting has left riser and right riser on the base, right riser is parallel to each other with left riser, the threaded rod is installed in the common rotation on right riser and the left riser, be equipped with two sections screw pitches on the threaded rod equal, revolve to opposite screw thread, be equipped with left movable block and right movable block on two sections screw threads of threaded rod respectively, the threaded rod runs through left movable block and threaded connection with it, the threaded rod runs through right movable block and threaded connection with it, the bottom surface of left movable block and the bottom surface of right movable block all laminate with the base upper surface, install fixed subassembly jointly on left movable block and the right movable block, fixed subassembly includes the left clamp splice that sets up on left movable block and the right clamp splice that sets up on right movable block, the left clamping block is provided with a left arc-shaped groove matched with a bearing to be fixed, the right clamping block is provided with a right arc-shaped groove matched with the bearing to be fixed, and the right movable block is provided with a driving assembly for driving the threaded rod to rotate.

Through adopting above-mentioned technical scheme, before carrying out the vibration measurement to the bearing, the staff only needs to arrange the bearing in between left clamp splice and the right clamp splice to order about the threaded rod through drive assembly and rotate, because it equals to have two sections pitches on the threaded rod, revolve to opposite screw, be close to each other between left movable block and the right movable block, thereby make left clamp splice and right clamp splice be close to each other and support tightly treat fixed bearing, so that the staff carries out the vibration measurement to the bearing, loaded down with trivial details when having reduced staff stationary bearing. After the vibration measurement work of bearing was accomplished, the staff only need adopt drive assembly to order about threaded rod antiport to this makes left movable block and right movable block keep away from each other, thereby makes left clamp splice and right clamp splice keep away from each other, so that the staff dismantles the bearing, has reduced the loaded down with trivial details when the staff dismantles the bearing.

Preferably, the driving assembly comprises a driven gear fixedly sleeved on the threaded rod, a motor fixed on the right movable block and a driving gear fixedly sleeved on an output shaft of the motor and meshed with the driven gear.

Through adopting above-mentioned technical scheme, when fixing bearing, the staff only need open the motor, and the motor work back drives the driving gear and rotates to this makes driven gear with driving gear meshing and rotates with the fixed threaded rod of driven gear, thereby makes left movable block and right movable block be close to each other, so that left clamp splice and right clamp splice cooperation and fixing bearing, be favorable to the staff to carry out vibration measurement to the bearing. After the vibration measurement work of bearing was accomplished, the staff only need open the motor, and the motor work back drives the driving gear and rotates to this makes threaded rod antiport, thereby makes left movable block and right movable block keep away from each other, so that left clamp splice and right clamp splice cooperation and keep away from the bearing, are favorable to the staff to dismantle the bearing.

Preferably, a left arc-shaped rubber sheet is fixed on the surface of the left arc-shaped groove of the left clamping block, and a right arc-shaped rubber sheet is fixed on the surface of the right arc-shaped groove of the right clamping block.

Through adopting above-mentioned technical scheme, left side arc sheet rubber and right side arc sheet rubber are made by rubber materials, and both all have good elastic performance, and bearing and left clamp splice cooperation effect support tight left arc sheet rubber, and bearing and right clamp splice cooperation effect support tight right arc sheet rubber to this makes equal flexonics between bearing and left clamp splice and the right clamp splice, has reduced the probability that takes place the friction damage between bearing and left clamp splice and the right clamp splice. In addition, left side arc sheet rubber all has great coefficient of friction with right arc sheet rubber surface, all has great coefficient of friction between the left arc recess of bearing surface and left clamp splice and the right arc recess surface of right clamp splice, has strengthened the stability between bearing and left clamp splice and the right clamp splice.

Preferably, two left arc-shaped convex strips for limiting a bearing to be fixed are fixed on the surface of the left arc-shaped groove, and the extending direction of the left arc-shaped convex strips is parallel to the extending direction of the left arc-shaped groove; the bearing that treats fixed is fixed with on the surface of right side arc recess and carries out two spacing right side arc sand grips, just the extending direction of right side arc sand grip is parallel with the extending direction of right side arc recess.

Through adopting above-mentioned technical scheme, two left arc sand grips have played good limiting displacement to treating fixed bearing, have strengthened the fixed subassembly and have treated the stability of fixed bearing fixing in-process. The bearing that fixed has been treated to two right arc sand grips has played good limiting displacement, has further strengthened the fixed subassembly and has treated the stability of fixed bearing fixing in-process.

Preferably, the motor is a brake motor.

Through adopting above-mentioned technical scheme, brake motor has advantages such as braking rapidly, simple structure, reliability height, commonality are strong, and when the power cut-off, the brake motor electro-magnet loses magnetic attraction, and spring promotion armature compresses tightly the brake disc, and under the friction torque effect, brake motor stops the operation immediately, chooses for use brake motor as the driving piece to this has strengthened the staff and has stopped the accurate control that stops to the motor.

Preferably, left arc recess on the left clamp splice and the right arc recess on the right clamp splice all are circular-arcly, the height of left clamp splice upper surface and the height of right clamp splice upper surface all are higher than the height of left arc recess axis.

Through adopting above-mentioned technical scheme, left arc recess on the left clamp splice and the right arc recess on the right clamp splice are mutually supported to this has played good fixed action to the bearing, has reduced the probability that the bearing breaks away from left clamp splice and right clamp splice in fixed process.

Preferably, the left clamping block and the left movable block are jointly provided with a left connecting assembly, the left connecting assembly comprises a left fixed block fixed with the side wall of the left clamping block and a left bolt which is arranged on the left fixed block in a penetrating manner and is in clearance fit with the left fixed block, and the lower end of the left bolt is in threaded connection with the upper surface of the left movable block; install right coupling assembling jointly on right clamp splice and the right movable block, right side coupling assembling includes the right fixed block fixed with right clamp splice lateral wall and runs through set up on right fixed block and with right fixed block clearance fit's right bolt, right side bolt lower extreme and right movable block upper surface threaded connection.

Through adopting above-mentioned technical scheme, when the not unidimensional bearing of needs is fixed, the staff only need unscrew left bolt and right bolt to this is convenient for the staff and dismantles left clamp splice and right clamp splice, thereby changes not unidimensional bearing, and afterwards, the staff need be through left bolt fastening left clamp splice, through right bolt fastening right clamp splice simultaneously, is favorable to the staff to carry out vibration measurement to not unidimensional bearing.

Preferably, the measuring assembly comprises a cylinder fixed with the horizontal part of the L-shaped plate body, and a sensor fixed with the lower end of a piston rod of the cylinder, wherein the piston rod axis of the cylinder is perpendicular to and intersects with the axis of the bearing to be measured.

Through adopting above-mentioned technical scheme, when carrying out vibration detection to the bearing that awaits measuring, the staff only need open the cylinder to make the piston rod lower extreme of cylinder promote the sensor and remove downwards, so that the staff carries out vibration detection through the sensor to the bearing top that awaits measuring.

In summary, the present application includes at least one of the following beneficial technical effects:

in the application, when the bearing is fixed or disassembled, a worker only needs to drive the threaded rod to rotate through the driving assembly, so that the left movable block and the right movable block are close to or far away from each other, the bearing is convenient to fix or disassemble by the worker, and the complex operation of fixing or disassembling the bearing by the worker is reduced;

in the application, after a worker starts the motor, the motor drives the driving gear to rotate, so that the driving gear drives the driven gear and the threaded rod fixed with the driven gear to rotate, and the left movable block and the right movable block are close to or far away from each other, so that the worker can fix or dismantle the bearing;

in this application, left side arc sheet rubber and right side arc sheet rubber all adopt rubber materials to make, and both surfaces all have great coefficient of friction, left clamp splice and treat between the fixed bearing and right clamp splice and treat between the fixed bearing and all have great frictional force, have strengthened the fixed effect of fixed subassembly to the bearing, are favorable to the staff to carry out vibration measurement to the bearing.

Drawings

Fig. 1 is a schematic structural view of a bearing vibration measuring instrument according to an embodiment of the present application.

Description of reference numerals: 1. a base; 11. an L-shaped plate body; 12. a left riser; 13. a right vertical plate; 2. a measurement assembly; 21. a cylinder; 22. a sensor; 3. a threaded rod; 31. a left movable block; 32. a right movable block; 4. a fixing assembly; 41. a left clamp block; 411. a left arc-shaped groove; 4111. a left arc-shaped rubber sheet; 4112. a left arc-shaped convex strip; 42. a right clamp block; 421. a right arc-shaped groove; 4211. a right arc-shaped rubber sheet; 4212. a right arc-shaped convex strip; 5. a left connection assembly; 51. a left fixed block; 52. a left bolt; 6. a right connection assembly; 61. a right fixed block; 62. a right bolt; 7. a drive assembly; 71. a driven gear; 72. a motor; 73. a drive gear.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses bearing vibration measuring instrument. Referring to fig. 1, the bearing vibration measuring instrument includes a base 1, an L-shaped plate body 11, a measuring component 2, a left vertical plate 12, a right vertical plate 13, a threaded rod 3, a left movable block 31, a right movable block 32, a fixed component 4, a left connecting component 5, a right connecting component 6, and a driving component 7. The base 1 is a horizontally arranged rectangular plate-shaped structure, the L-shaped plate body 11 is a plate-shaped structure with an L-shaped cross section, and the bottom surface of the vertical part of the L-shaped plate body 11 is fixed with the upper surface of the base 1. The measuring assembly 2 is disposed on the L-shaped plate 11 for performing vibration measurement on the bearing, and the measuring assembly 2 includes a cylinder 21 and a sensor 22. The cylinder body of the air cylinder 21 is fixed with the upper surface of the horizontal part of the L-shaped plate body 11, the lower end of the piston rod of the air cylinder 21 penetrates through the horizontal part of the L-shaped plate body 11 and is connected with the horizontal part of the L-shaped plate body 11 in a sliding mode, and the axis of the piston rod of the air cylinder 21 is perpendicular to and intersected with the axis of the bearing to be measured. The sensor 22 is fixed with the lower end of the piston rod of the cylinder 21, and the measuring end of the sensor 22 is abutted to the arc-shaped surface of the top of the outer ring of the bearing to be measured.

Referring to fig. 1, the left vertical plate 12 is a rectangular plate-shaped structure, and is vertically disposed, and the bottom surface of the left vertical plate 12 is fixed to the upper surface of the base 1. The right vertical plate 13 is also a rectangular plate-shaped structure and is vertically arranged, the bottom surface of the right vertical plate 13 is fixed with the upper surface of the base 1, the right vertical plate 13 is parallel to the left vertical plate 12, and the right vertical plate 13 and the left vertical plate 12 are respectively arranged on two sides of the base 1. The axis of the threaded rod 3 is vertical, one end of the threaded rod is rotatably connected with the left vertical plate 12, the other end of the threaded rod 3 penetrates through the right vertical plate 13 and is rotatably connected with the right vertical plate 13, and two sections of threads with equal thread pitches and opposite rotation directions are arranged on the threaded rod 3. Left movable block 31 is rectangle massive structure, and it is located between left riser 12 and the right riser 13, and left movable block 31 sets up on the screw thread of threaded rod 3 keeping away from right riser 13 one side, and the bottom surface and the 1 upper surface laminating of base of left movable block 31, and threaded rod 3 run through left movable block 31 and with left movable block 31 threaded connection. The right movable block 32 is a rectangular block-shaped structure and is located between the left vertical plate 12 and the right vertical plate 13, the right movable block 32 is arranged on a thread on one side of the threaded rod 3 close to the right vertical plate 13, the right movable block 32 and the left movable block 31 are symmetrically arranged, and the threaded rod 3 penetrates through the right movable block 32 and the right movable block 32 to be in threaded connection.

Referring to fig. 1, the fixed assembly 4 is commonly disposed on the left and right

movable blocks

31 and 32, and the fixed assembly 4 includes a left clamping block 41 and a right clamping block 42. Left clamp splice 41 sets up in threaded rod 3 top, and its bottom surface and the laminating of left movable block 31 upper surface, and one side that left clamp splice 41 is close to right riser 13 is equipped with circular-arc left arc recess 411, and left arc recess 411 and the bearing inner race cooperation of treating fixed. The right clamp splice 42 is arranged above the threaded rod 3, the bottom surface of the right clamp splice is attached to the upper surface of the right movable block 32, one side, far away from the right vertical plate 13, of the right clamp splice 42 is provided with a circular arc-shaped right arc-shaped groove 421, and the right arc-shaped groove 421 is matched with one side, far away from the left clamp splice 41, of the bearing outer ring to be fixed.

Referring to fig. 1, the left connecting assembly 5 is commonly mounted on the left clamping block 41 and the left movable block 31 for fixing the left clamping block 41 and the left movable block 31, and the left connecting assembly 5 includes a left fixed block 51 and a left bolt 52. The left fixing block 51 is a horizontally arranged rectangular block-shaped structure, and the side wall of one side of the left fixing block is fixed with the position, close to the bottom surface of the left clamping block 41, of the side wall of the left clamping block 41. The axis of the left bolt 52 is vertical, the left bolt 52 is arranged on the left fixed block 51 in a penetrating manner and is in clearance fit with the left fixed block 51, and the lower end of the left bolt 52 is in threaded connection with the upper surface of the left movable block 31. The right connecting assembly 6 is commonly disposed on the right clamping block 42 and the right movable block for fixing the right clamping block 42 and the right movable block 32, and the right connecting assembly 6 includes a right fixed block 61 and a right bolt 62. The right fixing block 61 is a horizontally arranged rectangular block-shaped structure, and the side wall of one side of the right fixing block is fixed with the side wall of the right clamping block 42 at a position close to the bottom surface of the right clamping block 42. The axis of the right bolt 62 is vertical, the right bolt 62 is arranged on the right fixed block 61 in a penetrating way and is in clearance fit with the right fixed block 61, and the lower end of the right bolt 62 is in threaded connection with the upper surface of the right movable block 32.

Referring to fig. 1, a driving assembly 7 is disposed on the right movable block 32 for driving the threaded rod 3 to rotate, and the driving assembly 7 includes a driven gear 71, a motor 72 and a driving gear 73. The axis of the driven gear 71 coincides with the axis of the threaded rod 3, and the driven gear is sleeved on the threaded rod 3 and fixed with the threaded rod 3. The lateral wall that left riser 12 one side was kept away from to motor 72 and right riser 13 is fixed, and the axis of motor 72 output shaft is parallel with the axis of threaded rod 3, and in this embodiment, motor 72 adopts brake motor to this staff opens and stops in time control to motor 72. The axis of the driving gear 73 coincides with the axis of the output shaft of the motor 72, the driving gear 73 is sleeved on the output shaft of the motor 72 and fixed with the output shaft of the motor 72, and the driving gear 73 is meshed with the driven gear 71. When the bearing to be measured needs to be measured, a worker only needs to place the bearing between the left clamping block 41 and the right clamping block 42, then the motor 72 is started, the motor 72 drives the driving gear 73 to rotate after working, the driving gear 73 drives the driven gear 71 meshed with the driving gear 73 and the threaded rod 3 fixed with the driven gear 71 to rotate, so that the left movable block 31 and the right movable block 32 arranged on the two sections of threads of the threaded rod 3 are close to each other, the left movable block 31 and the right movable block 32 are matched with each other and abut against the bearing to be measured, the worker can conveniently operate the air cylinder 21, and the bearing to be measured is measured through the measuring end of the sensor 22. When the bearings with different sizes need to be measured, a worker only needs to screw down the left bolt 52 and the right bolt 62, so that the worker can conveniently detach and replace the left clamping block 41 and the right clamping block 42, and the worker can conveniently measure the bearings with different sizes.

Referring to fig. 1, the height of the upper surface of the left clamping block 41 and the height of the upper surface of the right clamping block 42 are both higher than the height of the axis of the left arc-shaped groove 411, so that the left clamping block 41 and the right clamping block 42 cooperate to fix the bearing, and the probability that the bearing is separated from the top of the left clamping block 41 and the top of the right clamping block 42 is reduced. Be provided with left arc sheet rubber 4111 on the left clamp splice 41, left arc sheet rubber 4111 is arc sheet structure, and left arc sheet rubber 4111's bottom surface and left arc recess 411 surface laminating are fixed. Be provided with right arc sheet rubber 4211 on the right clamp splice 42, right arc sheet rubber 4211 also is arc sheet structure, the bottom surface and the laminating of right arc recess 421 surface of right arc sheet rubber 4211 and fixed, and right arc sheet rubber 4211 and left arc sheet rubber 4111 all adopt rubber materials to make, both all have better elastic property, with this make bearing and left clamp splice 41 and right clamp splice 42 between equal flexonics, the probability of taking place the friction between bearing and left clamp splice 41 and the right clamp splice 42 has been reduced. In addition, through setting up left arc rubber piece 4111 and right arc rubber piece 4211, have great frictional force between left clamp splice 41 and the bearing, have great frictional force between right clamp splice 42 and the bearing to this stability of bearing in the fixed process has been strengthened.

Referring to fig. 1, be provided with left arc sand grip 4112 on the left clamp splice 41, left arc sand grip 4112 is arc strip structure, left arc sand grip 4112's bottom surface and left arc recess 411 surface laminating and fixed, left arc sand grip 4112's extending direction is parallel with the extending direction of left arc recess 411, and left arc sand grip 4112's quantity is two, treat two terminal surfaces of fixed bearing and laminate with two left arc sand grips 4112 respectively, treat with this that fixed bearing has played good limiting displacement. Be provided with right arc sand grip 4212 on the right clamp splice 42, right arc sand grip 4212 is arc strip structure, the bottom surface and the laminating of right arc recess 421 surface of right arc sand grip 4212 and fixed, the extending direction of right arc sand grip 4212 is parallel with the extending direction of right arc recess 421, and the quantity of right arc sand grip 4212 is two, treat two terminal surfaces of fixed bearing and laminate with two right arc sand grip 4212 respectively to this has treated fixed bearing and has played good limiting displacement.

The implementation principle of the bearing vibration measuring instrument in the embodiment of the application is as follows: when needing to measure the bearing of awaiting measuring, the staff only needs to place the bearing in between left clamp splice 41 and the right clamp splice 42, the axis of bearing is perpendicular with the axis of threaded rod 3, at this moment, the staff need open motor 72, motor 72 drives driving gear 73 after the work and rotates, driving gear 73 drives driven gear 71 and threaded rod 3 and rotates, make left movable block 31 and right movable block 32 be close to each other with this, thereby be convenient for left clamp splice 41 and right clamp splice 42 mutually support and will measure the bearing fixed, so that the staff carries out vibration measurement to the arc surface at bearing outer lane top through sensor 22.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a bearing vibration measuring instrument which characterized in that: including base (1), with base (1) upper surface fixed's L shape plate body (11) and set up measuring component (2) on L shape plate body (11), base (1) upper surface fixed has left riser (12) and right riser (13), right riser (13) are parallel to each other with left riser (12), rotate jointly on right riser (13) and left riser (12) and install threaded rod (3), be equipped with two sections pitches on threaded rod (3) and equal, revolve to opposite screw thread, be equipped with left movable block (31) and right movable block (32) on two sections screws of threaded rod (3) respectively, threaded rod (3) run through left movable block (31) and threaded connection with it, threaded rod (3) run through right movable block (32) and threaded connection with it, the bottom surface of left movable block (31) and the bottom surface of right movable block (32) all laminate with base (1) upper surface, install fixed subassembly (4) jointly on left side movable block (31) and right movable block (32), fixed subassembly (4) including set up left clamp splice (41) on left movable block (31) and set up right clamp splice (42) on right movable block (32), be equipped with on left clamp splice (41) and treat fixed bearing complex left arc recess (411), be equipped with on right clamp splice (42) and treat fixed bearing complex right arc recess (421), be provided with on right movable block (32) and order about threaded rod (3) pivoted drive assembly (7).

2. The bearing vibration measuring instrument according to claim 1, wherein: the driving assembly (7) comprises a driven gear (71) fixedly sleeved on the threaded rod (3), a motor (72) fixed on the right movable block (32) and a driving gear (73) fixedly sleeved on an output shaft of the motor (72) and meshed with the driven gear (71).

3. The bearing vibration measuring instrument according to claim 2, wherein: the left arc-shaped groove (411) of the left clamping block (41) is fixed with a left arc-shaped rubber sheet (4111) on the surface, and the right arc-shaped groove (421) of the right clamping block (42) is fixed with a right arc-shaped rubber sheet (4211) on the surface.

4. The bearing vibration measuring instrument according to claim 2, wherein: two left arc-shaped convex strips (4112) for limiting a bearing to be fixed are fixed on the surface of the left arc-shaped groove (411), and the extending direction of the left arc-shaped convex strips (4112) is parallel to the extending direction of the left arc-shaped groove (411); the bearing that treats fixed is fixed with on the surface of right side arc recess (421) and carries out two spacing right arc sand grip (4212), just the extending direction of right side arc sand grip (4212) is parallel with the extending direction of right arc recess (421).

5. The bearing vibration measuring instrument according to claim 2, wherein: the motor (72) is a brake motor.

6. The bearing vibration measuring instrument according to claim 1, wherein: left arc recess (411) on left clamp splice (41) and right arc recess (421) on right clamp splice (42) all are circular-arcly, the height of left clamp splice (41) upper surface and the height of right clamp splice (42) upper surface all are higher than the height of left arc recess (411) axis.

7. The bearing vibration measuring instrument according to claim 1, wherein: the left connecting assembly (5) is mounted on the left clamping block (41) and the left movable block (31) together, the left connecting assembly (5) comprises a left fixed block (51) fixed to the side wall of the left clamping block (41) and a left bolt (52) which is arranged on the left fixed block (51) in a penetrating mode and in clearance fit with the left fixed block (51), and the lower end of the left bolt (52) is in threaded connection with the upper surface of the left movable block (31); install right coupling assembling (6) jointly on right clamp splice (42) and right movable block (32), right side coupling assembling (6) include with right clamp splice (42) lateral wall fixed right fixed block (61) and run through set up on right fixed block (61) and with right fixed block (61) clearance fit's right bolt (62), right side bolt (62) lower extreme and right movable block (32) upper surface threaded connection.

8. The bearing vibration measuring instrument according to claim 1, wherein: the measuring assembly (2) comprises an air cylinder (21) fixed with the horizontal part of the L-shaped plate body (11) and a sensor (22) fixed with the lower end of a piston rod of the air cylinder (21), and the axis of the piston rod of the air cylinder (21) is perpendicular to and intersected with the axis of the bearing to be measured.