CN214250931U

CN214250931U - Bearing radial clearance measuring device

Info

Publication number: CN214250931U
Application number: CN202120614157.9U
Authority: CN
Inventors: 解文伟
Original assignee: Wuxi Jingbida Industrial Technology Co ltd
Current assignee: Wuxi Jingbida Industrial Technology Co ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-09-21
Anticipated expiration: 2031-03-25

Abstract

The application relates to the field of bearing detection, in particular to a bearing radial clearance measuring device. The clamping device comprises a workbench, wherein a tensioning mechanism is arranged on the workbench and comprises a bearing seat used for connecting a bearing, the bearing seat is connected with the workbench, a fixing rod is fixedly connected with the bearing seat and used for penetrating through an inner ring of the bearing, a top gap mechanism is further arranged on the workbench and comprises two abutting assemblies symmetrically arranged in a horizontal plane, each abutting assembly comprises an abutting block used for abutting against an outer ring of the bearing, each abutting block is connected with the workbench in a sliding mode, a testing mechanism is further arranged on the workbench and comprises a measuring rod used for abutting against the outer ring of the bearing, and the measuring rod is connected with a displacement sensor. The bearing radial play detection method and device have the effect of improving the detection efficiency of the bearing radial play detection.

Description

Bearing radial clearance measuring device

Technical Field

The application relates to the field of bearing detection, in particular to a bearing radial clearance measuring device.

Background

The bearing is an important part in the modern mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision.

The bearing play is the clearance between the bearing rolling elements and the bearing inner and outer race shells. The bearing play refers to a movement amount when the bearing is not mounted on the shaft or the bearing housing, the inner ring or the outer ring is fixed, and then the non-fixed bearing play is moved in the radial direction or the axial direction. According to the direction of movement, radial play and axial play can be divided. When the bearing runs, the size of the clearance has an influence on the rolling fatigue life, temperature rise, noise, vibration and other performances of the bearing. At present, the detection of the radial play of the bearing is mostly manually measured by workers.

In view of the above-mentioned related technologies, the inventor considers that the detection of the radial play of the bearing is a necessary detection step before the shipping of the bearing, and for the bearings produced in large quantities, the detection efficiency is low by means of manual detection.

SUMMERY OF THE UTILITY MODEL

In order to improve the detection efficiency that bearing radial play detected, this application provides a bearing radial play measuring device.

The application provides a bearing radial play measuring device adopts following technical scheme:

the utility model provides a bearing radial internal clearance measuring device, includes the workstation, be provided with straining device on the workstation, straining device is including the bearing frame that is used for placing the bearing, bearing frame fixedly connected with dead lever, the dead lever is arranged in wearing to establish the inner circle of bearing, the bearing frame is connected with the workstation, still be provided with top clearance mechanism on the workstation, top clearance mechanism includes two sets of outer tight subassemblies that support that set up in the horizontal plane symmetry, outer tight subassembly that supports is including the piece that supports that is used for with the bearing inner race butt, support the piece and be connected with the workstation slides, still be provided with accredited testing organization on the workstation, accredited testing organization is including the measuring stick that is used for with the bearing inner race butt, the measuring stick is connected with displacement sensor.

Through adopting above-mentioned technical scheme, when carrying out the radial play test of bearing, place the bearing on the bearing frame, the dead lever is worn in the bearing inner race, realizes the location to the bearing. The measuring rod in the driving test mechanism is abutted against the outer ring of the bearing, one of the outer abutting assemblies is driven to move, so that the abutting block abuts against the outer ring of the bearing from one direction, and at the moment, the displacement sensor obtains a group of measuring data. And driving the other outer abutting component to move, so that the abutting block abuts against the outer ring of the bearing in the reverse direction, the displacement sensor obtains another set of measurement data at the moment, and the two sets of measurement data are combined to calculate and obtain the radial clearance data of the bearing. Through setting up straining device, top clearance mechanism and accredited testing organization cooperation motion, realize the radial play test to the bearing, improve efficiency of software testing.

Optionally, the testing mechanism includes a testing base connected with the workbench, the testing base is rotatably connected with the measuring rod through a rotating shaft, the rotating shaft is arranged in the middle of the measuring rod, one end of the measuring rod is abutted to the outer ring of the bearing, and the other end of the measuring rod is abutted to the displacement sensor.

By adopting the technical scheme, the bearing outer ring is indirectly tested through the measuring rod, and the possibility that the testing head of the displacement sensor wears the surface of the bearing outer ring is reduced.

Optionally, the test base is connected with the workbench in a sliding manner.

Through adopting above-mentioned technical scheme, when carrying out the radial play test to the bearing, the drive test base slides to the direction that is close to the bearing for the measuring stick can with bearing inner race butt. After the test is finished, the test base is driven to slide towards the direction far away from the bearing, and the possibility of abrasion of a test head of the displacement sensor during part taking and placing is reduced.

Optionally, the tensioning mechanism includes a ring sleeve fixedly connected to the fixing rod, the ring sleeve is connected to an inner abutting assembly, the inner abutting assembly includes a connecting rod rotatably connected to the ring sleeve, an abutting ball is fixedly connected to an end of the connecting rod, which is far away from the ring sleeve, and the abutting ball is used for abutting against the inner ring of the bearing, and a first elastic member is connected between the connecting rod and the fixing rod.

Through adopting above-mentioned technical scheme, establish the bearing housing outside the dead lever, the bearing inner race compresses first elastic component this moment, and the elasticity of first elastic component orders about the butt ball and supports tightly the bearing inner race, realizes the fixed of bearing inner race.

Optionally, the first elastic element is arranged below the loop.

Through adopting above-mentioned technical scheme, set up first elastic component in the ring cover below, be convenient for establish the dead lever with the bearing from the top cover.

Optionally, the inner abutting assemblies are provided with a plurality of groups, and the plurality of groups of inner abutting assemblies are rotationally and symmetrically arranged around the axis of the fixed rod.

Through adopting above-mentioned technical scheme, through setting up the tight subassembly of supporting in the multiunit for straining device supports tightly fixedly more evenly to the bearing inner race.

Optionally, the bearing frame rotates with the workstation to be connected, still be provided with on the workstation and be used for driving bearing frame pivoted actuating mechanism, actuating mechanism includes and rotates the driving gear of being connected with the workstation, the coaxial rigid coupling of bearing frame has driven gear, the driving gear is connected with driven gear meshing.

Through adopting above-mentioned technical scheme, after the radial play test of testing mechanism completion once, the drive driving gear rotates, drives driven gear and bearing frame and rotates, changes the direction of bearing for the radial play test can be carried out to another direction of bearing to testing mechanism, and multiple measurements can improve the measurement accuracy of radial play test.

Optionally, the outer abutting assembly further comprises a fixing plate fixedly connected with the workbench, and a second elastic member is connected between the fixing plate and the abutting block.

By adopting the technical scheme, the driving abutting block is close to the bearing, at the moment, the second elastic piece is pulled, so that the abutting force of a part of abutting block to the bearing can be offset, and the possibility of deformation of the outer ring of the bearing due to overlarge abutting force of the abutting block to the bearing is reduced.

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

1. the radial play test of the bearing is realized by arranging the tensioning mechanism, the top clearance mechanism and the testing mechanism, so that the test efficiency is improved;

2. the bearing shaft is driven to rotate by the driving mechanism, so that the radial clearance of the bearing can be measured for multiple times, and the detection precision is improved;

3. a measuring base in the testing mechanism is connected with the workbench in a sliding mode, and a measuring rod is arranged in the testing mechanism, so that the possibility of abrasion of a bearing outer ring and a displacement sensor testing head is reduced.

Drawings

Fig. 1 is a schematic structural view of a bearing radial play measuring apparatus.

Fig. 2 is a schematic structural view of another view angle of the bearing radial play measuring device.

Fig. 3 is a schematic view of a connection structure of the fixing rod and the inner abutting assembly.

Fig. 4 is a structural sectional view of the test mechanism.

Description of reference numerals: 1. a work table; 10. a bearing; 11. a sliding track; 2. a tensioning mechanism; 21. a bearing seat; 22. fixing the rod; 230. sleeving a ring; 23. an inner abutting component; 231. a connecting rod; 232. tightly pressing the ball; 233. a first elastic member; 3. a drive mechanism; 31. rotating the motor; 32. a driving gear; 33. a driven gear; 4. a top clearance mechanism; 41. an outer abutting component; 411. a push cylinder; 412. a resisting block; 413. a fixing plate; 414. a second elastic member; 5. a testing mechanism; 50. a slipping cylinder; 51. a test base; 511. a rotation chamber; 512. a test slot; 513. a compaction groove; 514. a threaded hole; 52. a measuring rod; 521. abutting against the contact; 53. a displacement sensor; 54. a rotating shaft; 55. a third elastic member; 56. a plug head; 57. and adjusting the bolt.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses bearing radial play measuring device.

Referring to fig. 1, the bearing radial play measuring device includes a workbench 1, and a tensioning mechanism 2, a driving mechanism 3, a top clearance mechanism 4 and a testing mechanism 5 are arranged on the workbench 1. A bearing 10 is connected to the tensioning mechanism 2.

Referring to fig. 2 and 3, the tensioning mechanism 2 includes a bearing seat 21 rotatably connected to the worktable 1, the bearing seat 21 is coaxially and fixedly connected to a fixing rod 22, and the bearing 10 is sleeved on the fixing rod 22. The fixing rod 22 is fixedly connected with a ring sleeve 230, the ring sleeve 230 is connected with a plurality of groups of inner abutting components 23, the plurality of groups of inner abutting components 23 are rotationally and symmetrically arranged around the axis of the ring sleeve 230, in this embodiment, six inner abutting components 23 are arranged. The inner abutting assembly 23 includes a connecting rod 231 rotatably connected to the ring 230, and an abutting ball 232 is fixedly connected to an end of the connecting rod 231 away from the ring 230, and the abutting ball 232 can abut against a side wall of the inner ring of the bearing 10. A first elastic member 233 is connected between the connecting rod 231 and the fixing rod 22, one end of the first elastic member 233 is fixedly connected with the fixing rod 22, and the other end is fixedly connected with the middle part of the connecting rod 231. The first elastic member 233 is positioned under the cuff 230. The first elastic member 233 is a spring in this embodiment.

When carrying out radial play test to bearing 10, placing bearing 10 and dead lever 22 correspondingly, bearing 10 is established from the top cover and is gone into on the dead lever 22, and the in-process is established to the cover, bearing 10 with support tight ball 232 butt for support tight ball 232 and drive connecting rod 231 and rotate, compress first elastic component 233, the elasticity of the production of first elastic component 233 is acted on supporting tight ball 232, make support tight ball 232 support tight bearing 10 inner circle lateral wall, realize bearing 10 inner circle support tight fixedly. And a plurality of groups of inner abutting assemblies 23 are arranged, so that the bearings 10 are abutted more uniformly and stably by the tensioning mechanism 2.

Referring to fig. 2, the driving mechanism 3 includes a rotating motor 31 fixedly connected below the worktable 1, a driving gear 32 is rotatably connected below the worktable 1, and the driving gear 32 is horizontally disposed and coaxially and fixedly connected with an output shaft of the rotating motor 31. The bearing seat 21 is coaxially and fixedly connected with a driven gear 33 through the workbench 1, and the driving gear 32 is meshed with the driven gear 33.

The output shaft of the driving rotation motor 31 is driven to rotate, so that the driving gear 32 drives the driven gear 33 to rotate, and the bearing seat 21 is rotated.

Referring to fig. 2, the backlash mechanism 4 includes two sets of external abutting assemblies 41 symmetrically disposed in a horizontal plane, and the two sets of external abutting assemblies 41 and the bearing seat 21 are located on the same straight line. The outer abutting assembly 41 comprises a pushing cylinder 411 fixedly connected with the workbench 1, a piston rod of the pushing cylinder 411 is horizontally arranged, a abutting block 412 is fixedly connected to the piston rod of the pushing cylinder 411, and the abutting block 412 can abut against the outer ring side wall of the bearing 10. One side of the abutting block 412 facing the bearing 10 is set to be an arc shape fitting with the side wall of the outer ring of the bearing 10. The fixing plate 413 is fixedly connected to the working platform 1, the second elastic member 414 is connected between the fixing plate 413 and the abutting block 412, one end of the second elastic member 414 is fixedly connected to the fixing plate 413, and the other end of the second elastic member 414 is fixedly connected to the abutting block 412, in this embodiment, the second elastic member 414 is a spring, and the second elastic member 414 is sleeved on the piston rod of the pushing cylinder 411.

The piston rod of the pushing cylinder 411 in the outer abutting assembly 41 on the right side in fig. 2 is driven to extend, so that the abutting block 412 abuts against the outer ring of the bearing 10 from the right side, at this time, the second elastic member 414 stretches, the elastic force of the second elastic member 414 can counteract a part of abutting force of the abutting block 412 on the bearing 10, and the possibility that the outer ring of the bearing 10 is deformed due to too large abutting force of the abutting block 412 on the bearing 10 is reduced. The piston rod of the right push cylinder 411 is driven to retract, and the piston rod of the left push cylinder 411 is driven to extend, so that the abutting block 412 abuts against the outer ring of the bearing 10 from the left side.

Referring to fig. 2 and 4, the worktable 1 is fixedly connected with a sliding rail 11, and the sliding rail 11 is horizontally arranged. The testing mechanism 5 comprises a testing base 51 connected with the sliding rail 11 in a sliding mode, a sliding cylinder 50 is fixedly connected with one end of the sliding rail 11, the sliding cylinder 50 is horizontally arranged, and a piston rod of the sliding cylinder 50 is fixedly connected with the testing base 51.

Referring to fig. 4, the test base 51 has a rotation chamber 511 formed therein, and the test base 51 has a side wall formed with a test slot 512, a pressing slot 513 and a threaded hole 514. The test slots 512, the compacting slots 513, and the threaded apertures 514 are all in communication with the rotation chamber 511. The side wall of the rotating cavity 511 is fixedly connected with a rotating shaft 54, the test base 51 is rotatably connected with a measuring rod 52 through the rotating shaft 54, and the rotating shaft 54 is connected to the middle part of the measuring rod 52. The lower end of the measuring rod 52 is integrally formed with an abutting head 521, and one side of the abutting head 521 facing the bearing seat 21 is formed in an arc shape. The abutting contact 521 can abut against the outer ring side wall of the bearing 10. The test base 51 is connected with a displacement sensor 53, and the displacement sensor 53 passes through the test slot 512 to be abutted against one end of the measuring rod 52 far away from the abutting contact 521. The pressing groove 513 is connected with a third elastic element 55 and a plug 56, and the plug 56 is clamped and fixed with the test base 51. One end of the third elastic member 55 abuts against the plug 56, and the other end abuts against the measuring rod 52, in this embodiment, the third elastic member 55 is a spring. An adjusting bolt 57 is screwed into the threaded hole 514, and one end of the adjusting bolt 57 extends into the rotating cavity 511 to abut against the measuring rod 52.

The piston rod of the driving sliding cylinder 50 extends out, so that the testing mechanism 5 moves towards the direction close to the bearing seat 21, the abutting head 521 abuts against the outer ring side wall of the bearing 10, and the displacement sensor 53 performs testing. The third elastic member 55 enables the measuring rod 52 to abut against the side wall of the outer ring of the bearing 10, and the adjusting bolt 57 can perform fine adjustment, so as to reduce the possibility of damaging the displacement sensor 53 due to too large elastic force of the third elastic member 55.

The implementation principle of the bearing radial play measuring device in the embodiment of the application is as follows: when the radial play test is performed on the bearing 10, the bearing 10 is sleeved on the fixing rod 22 from the upper part, and the inner ring of the bearing 10 is tightly pressed and fixed by the tensioning mechanism 2. The piston rod of the pushing cylinder 411 in one of the external abutting assemblies 41 is driven to extend, so that the abutting block 412 abuts against the outer ring of the bearing 10. The piston rod of the driving sliding cylinder 50 extends out, so that the abutting head 521 abuts against the outer ring of the bearing 10, and at this time, the displacement sensor 53 in the testing mechanism 5 can obtain a set of data. The piston rod of the pushing cylinder 411 is driven to retract, and then the piston rod of the pushing cylinder 411 in the other external abutting assembly 41 is driven to extend, so that the abutting block 412 abuts against the outer ring of the bearing 10 from the other direction, at this time, the displacement sensor 53 can obtain another set of data, and the radial play of the bearing 10 can be calculated by combining the two sets of data. The piston rods of the push cylinder 411 and the slide cylinder 50 are driven to retract, so that the abutting head 521 and the abutting block 412 are separated from the bearing 10. The output shaft of the driving rotating motor 31 rotates, so that the bearing seat 21 drives the bearing 10 to rotate, the processes are repeated, the play test is carried out, and the measurement error of the radial play can be reduced through multiple groups of tests.

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 radial play measuring device, includes workstation (1), its characterized in that: the device is characterized in that a tensioning mechanism (2) is arranged on the workbench (1), the tensioning mechanism (2) comprises a bearing seat (21) used for being connected with a bearing (10), the bearing seat (21) is connected with the workbench (1), a fixing rod (22) is fixedly connected with the bearing seat (21), the fixing rod (22) is used for being arranged in an inner ring of the bearing (10) in a penetrating mode, a top clearance mechanism (4) is further arranged on the workbench (1), the top clearance mechanism (4) comprises two groups of outer abutting components (41) symmetrically arranged in a horizontal plane, each outer abutting component (41) comprises an abutting block (412) used for abutting against an outer ring of the bearing (10), each abutting block (412) is connected with the workbench (1) in a sliding mode, a testing mechanism (5) is further arranged on the workbench (1), and each testing mechanism (5) comprises a measuring rod (52) used for abutting against the outer ring of the bearing (10), the measuring rod (52) is connected with a displacement sensor (53).

2. The bearing radial play measuring device according to claim 1, characterized in that: the testing mechanism (5) comprises a testing base (51) connected with the workbench (1), the testing base (51) is rotatably connected with the measuring rod (52) through a rotating shaft (54), the rotating shaft (54) is arranged in the middle of the measuring rod (52), one end of the measuring rod (52) is abutted to the outer ring of the bearing (10), and the other end of the measuring rod is abutted to the displacement sensor (53).

3. The bearing radial play measuring device according to claim 2, characterized in that: the test base (51) is connected with the workbench (1) in a sliding mode.

4. The bearing radial play measuring device according to claim 1, characterized in that: the tensioning mechanism (2) comprises a ring sleeve (230) fixedly connected with the fixed rod (22), an inner abutting component (23) is connected to the ring sleeve (230), the inner abutting component (23) comprises a connecting rod (231) rotatably connected with the ring sleeve (230), an abutting ball (232) is fixedly connected to one end, far away from the ring sleeve (230), of the connecting rod (231), the abutting ball (232) is used for abutting against an inner ring of the bearing (10), and a first elastic piece (233) is connected between the connecting rod (231) and the fixed rod (22).

5. The bearing radial play measuring device according to claim 4, characterized in that: the first elastic member (233) is disposed under the collar (230).

6. The bearing radial play measuring device according to claim 5, characterized in that: the inner abutting components (23) are provided with a plurality of groups, and the inner abutting components (23) are arranged in a rotational symmetry mode around the axis of the ring sleeve (230).

7. The bearing radial play measuring device according to claim 1, characterized in that: bearing frame (21) rotate with workstation (1) and be connected, still be provided with on workstation (1) and be used for driving bearing frame (21) pivoted actuating mechanism (3), actuating mechanism (3) include with workstation (1) rotate driving gear (32) of being connected, the coaxial rigid coupling of bearing frame (21) has driven gear (33), driving gear (32) are connected with driven gear (33) meshing.

8. The bearing radial play measuring device according to claim 1, characterized in that: the outer abutting component (41) further comprises a fixing plate (413) fixedly connected with the workbench (1), and a second elastic piece (414) is connected between the fixing plate (413) and the abutting block (412).