CN210014915U

CN210014915U - Test device for detecting service life of bearing

Info

Publication number: CN210014915U
Application number: CN201921102522.7U
Authority: CN
Inventors: 王泽军; 刘建; 余万荣; 金徐凯
Original assignee: Shenzhen Shengshi Elevator Co Ltd
Current assignee: Shenzhen Shengshi Elevator Co Ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-02-04
Anticipated expiration: 2029-07-15

Abstract

The utility model discloses a test device for detecting the service life of a bearing, which comprises a bracket component, wherein the bracket component is provided with a fixing frame for fixing the bearing to be detected, a servo device matched with the bearing to be detected, a pressurizing device for applying pressure to the servo device, and a pressure sensor arranged between the pressurizing device and the servo device; during detection, the lower end face of the bearing seat is abutted against the outer peripheral face of the bearing to be detected, and the bearing to be detected rotates along with the bearing seat. The utility model discloses a test device for detecting bearing life, simple structure not only, convenient operation has reduced test cost moreover, has improved test efficiency.

Description

Test device for detecting service life of bearing

Technical Field

The utility model relates to a bearing detects technical field, especially relates to a test device for detecting bearing life-span.

Background

In the prior art, a bearing is an indispensable important part in a mechanical product. The bearing is used as a key part, if damage occurs in the using process, serious consequences are caused, and therefore, the maintenance period needs to be determined according to the service life of the bearing. In the prior art, in order to evaluate the service life of a bearing in a product, the bearing is usually mounted on the product for destructive test, the method can accurately test the service life of the bearing, but the cost is high, the period is long, and the operation is complex. Therefore, it is necessary to develop a testing device for detecting the service life of a bearing, which has a simple structure, is convenient to test, and has a low cost.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a test device for detecting bearing service life, which is not only simple in structure, but also convenient in operation, reduces the test cost and improves the test efficiency.

The utility model discloses a following technical scheme realizes:

a test device for detecting the service life of a bearing comprises a support assembly, wherein the support assembly is provided with a fixing frame for fixing the bearing to be detected, a follow-up device matched with the bearing to be detected, a pressurizing device for applying pressure to the follow-up device, and a pressure sensor arranged between the pressurizing device and the follow-up device; during detection, the lower end face of the bearing seat is abutted against the outer peripheral face of the bearing to be detected, and the bearing to be detected rotates along with the bearing seat.

Furthermore, the fixing frame is provided with at least two fixing positions for fixing the bearing to be detected, and the fixing positions comprise fixing shafts which are arranged on the fixing frame along the horizontal direction and matched with the bearing to be detected and elastic check rings which axially limit the bearing to be detected.

Further, the driving device comprises a driving motor arranged on the bracket component, a driving shaft matched with the bearing seat and a coupling for connecting the driving motor and the driving shaft.

Further, the lower terminal surface of bearing frame is provided with axial connecting portion, and axial connecting portion are provided with the spline groove, and the drive shaft is provided with the spline with spline groove matched with.

Furthermore, the bearing assembly comprises a first bearing and a second bearing which are arranged at the lower part of the shaft sleeve, the first bearing is arranged above the second bearing, the first bearing is a deep groove ball bearing, and the second bearing is a thrust ball bearing.

Furthermore, the pressurizing device comprises a pressure plate sleeve, a guide shaft in sliding connection with the pressure plate sleeve, an elastic body sleeved outside the guide shaft, and a force application screw for driving the pressure plate sleeve to slide relative to the guide shaft, wherein the force application screw is arranged on the support component, and the guide shaft is connected with the pressure sensor.

Furthermore, the pressing plate sleeve is provided with a first threaded hole matched with the force application screw, and the support assembly is provided with a second threaded hole matched with the force application screw.

Furthermore, one end of the elastic body is connected with the pressure plate sleeve, the other end of the elastic body is connected with the guide shaft, and the elastic body is a compression spring.

Further, the support component comprises a workbench, a support component arranged below the workbench and a support component arranged above the workbench, the support component comprises two fixed supports arranged in parallel at intervals, a pressing plate and a guide plate are sequentially arranged between the two fixed supports from top to bottom, and the second threaded hole is formed in the pressing plate.

Furthermore, the guide plate is provided with a guide hole matched with the shaft sleeve, the shaft sleeve is in key connection with the guide plate, and the shaft sleeve can move along the axial direction of the guide hole relative to the guide hole.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the technical means that the bracket assembly is provided with a fixing frame for fixing the bearing to be detected, a follow-up device matched with the bearing to be detected, a pressurizing device for applying pressure to the follow-up device and a pressure sensor arranged between the pressurizing device and the follow-up device, so that the pressurizing device can apply pressure to the follow-up device and further the bearing to be detected, and the pressure sensor controls the magnitude of the applied force to realize the detection of the bearing to be detected; the shaft sleeve is connected with the pressure sensor, the bearing assembly is arranged outside the shaft sleeve, and the end cover and the bearing seat are used for axially limiting the bearing assembly, the shaft sleeve is in sliding connection with the support assembly, the bearing seat is connected with a driving device for driving the bearing seat to axially rotate, so that during detection, the lower end face of the bearing seat is abutted to the outer peripheral face of a bearing to be tested, the driving device drives the bearing seat to axially rotate along the bearing seat, the bearing to be tested is driven to rotate along with the bearing seat, the actual working condition of the bearing to be tested is simulated, the structure is simple, the operation is convenient, the testing cost is reduced, and the.

Drawings

Fig. 1 is a perspective view of a test apparatus according to an embodiment of the present invention;

fig. 2 is an exploded perspective view of a testing device according to an embodiment of the present invention;

FIG. 3 is a front view of a test rig according to an embodiment of the present invention;

fig. 4 is a perspective view of the testing device according to the embodiment of the present invention after the bracket assembly is hidden;

FIG. 5 is a front view of the trial of FIG. 4 with the carriage assembly hidden;

fig. 6 is a cross-sectional view of section AA in fig. 5.

In the figure: 10. a bracket assembly; 11. a work table; 12. a leg assembly; 13. a seat assembly; 131. a fixed support; 132. pressing a plate; 133. a guide plate; 20. a fixed mount; 21. a fixed shaft; 30. a follower device; 31. a shaft sleeve; 32. a first bearing; 33. a second bearing; 34. an end cap; 35. a bearing seat; 351. an axial connection; 352. a spline groove; 40. a pressurizing device; 41. a pressing plate sleeve; 42. a guide shaft; 43. an elastomer; 44. a force application screw; 50. a pressure sensor; 60. a drive device; 61. a drive motor; 62. a coupling; 63. a drive shaft; 631. a spline; 70. and (5) bearing to be tested.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

The test device for detecting the bearing life as shown in fig. 1-6 includes a bracket assembly 10, the bracket assembly 10 is provided with a fixing frame 20 for fixing a bearing 70 to be detected, a follower 30 engaged with the bearing 70 to be detected, a pressure device 40 for applying pressure to the follower 30, and a pressure sensor 50 disposed between the pressure device 40 and the follower 30, the follower 30 includes a shaft sleeve 31 connected to the pressure sensor 50, a bearing assembly (not shown) disposed outside the shaft sleeve 31, and an end cap 34 and a bearing seat 35 for axially limiting the bearing assembly, the shaft sleeve 31 is slidably connected to the bracket assembly 10, and the bearing seat 35 is connected to a driving device 60 for driving the bearing assembly to axially rotate; during detection, the lower end surface of the bearing seat 35 abuts against the outer peripheral surface of the bearing 70 to be detected, and the bearing 70 to be detected rotates along with the bearing seat 35.

Through the technical means that the bracket assembly 10 is provided with the fixing frame 20 for fixing the bearing 70 to be detected, the follow-up device 30 matched with the bearing 70 to be detected, the pressurizing device 40 for applying pressure to the follow-up device 30 and the pressure sensor 50 arranged between the pressurizing device 40 and the follow-up device 30, the pressurizing device 40 can apply pressure to the follow-up device 30 and further the bearing 70 to be detected, and the pressure sensor 50 controls the force application magnitude to realize the detection of the bearing 70 to be detected; by arranging the shaft sleeve 31 connected with the pressure sensor 50, the bearing assembly arranged outside the shaft sleeve 31, and the end cover 34 and the bearing seat 35 for axially limiting the bearing assembly, the shaft sleeve 31 is in sliding connection with the bracket assembly 10, and the bearing seat 35 is connected with a driving device 60 for driving the bearing assembly to axially rotate, so that during detection, the lower end surface of the bearing seat 35 is in contact with the outer peripheral surface of the bearing 70 to be detected, the driving device 60 drives the shaft 63 bearing seat 35 to axially rotate along the shaft, and further drives the bearing 70 to be detected to rotate along with the bearing seat 35, so as to simulate the actual working condition of the bearing 70 to be detected.

In a preferred embodiment, the fixing frame 20 is provided with at least two fixing positions (not shown) for fixing the bearing 70 to be measured, and the fixing positions include a fixing shaft 21 which is horizontally arranged on the fixing frame 20 and is matched with the bearing 70 to be measured, and an elastic collar (not shown) for axially limiting the bearing 70 to be measured. Preferably, the fixing frame 20 is provided with four fixing positions, so that four bearings 70 to be tested can be detected simultaneously, thereby eliminating the contingency, ensuring a more accurate test structure and improving the test efficiency. In other embodiments, the fixing locations are mounting holes provided on the fixing frame 20, and the cam followers are mounted in the mounting holes to detect the cam followers.

In a preferred embodiment, the driving device 60 includes a driving motor 61 disposed on the carriage assembly 10, a driving shaft 63 engaged with the bearing seat 35, and a coupling 62 connecting the driving motor 61 and the driving shaft 63. The lower end surface of the bearing housing 35 is provided with an axial connecting portion 351, the axial connecting portion 351 is provided with a spline groove 352, and the drive shaft 63 is provided with a spline 631 that fits in the spline groove 352. Spline 631 and spline 352 cooperate for the dismouting of bearing frame 35 and drive shaft 63 is more convenient, and spline 352 of bearing frame 35 directly pegs graft on spline 631 of drive shaft 63, and driving motor 61 passes through shaft coupling 62 and drives drive shaft 63 and rotate, and then drives bearing frame 35 and rotate. Preferably, the driving motor 61 is fixed to the rack assembly 10 by a connecting flange (not shown), and the driving motor 61 serves to provide a rotating force to the entire test apparatus.

In a preferred embodiment, the bearing assembly includes a first bearing 32 and a second bearing 33 disposed at a lower portion of the sleeve 31, the first bearing 32 is disposed above the second bearing 33, the first bearing 32 is a deep groove ball bearing, and the second bearing 33 is a thrust ball bearing. The thrust ball bearing can bear the supporting force of pressure and force application object reaction, and the deep groove ball bearing limits the radial swing, so that the running stability of the follow-up device 30 is ensured.

In a preferred embodiment, the pressing device 40 includes a pressing plate sleeve 41, a guide shaft 42 slidably connected to the pressing plate sleeve 41, an elastic body 43 fitted around the guide shaft 42, and an urging screw 44 for driving the pressing plate sleeve 41 to slide relative to the guide shaft 42, wherein the urging screw 44 is provided on the carriage assembly 10, and the guide shaft 42 is connected to the pressure sensor 50. The pressure plate sleeve 41 is driven to slide relative to the guide shaft 42 by the force application screw 44, and the pressure is applied to the guide shaft 42 through the elastic body 43, and then the pressure is transmitted to the servo device 30 and the bearing 70 to be measured through the pressure sensor 50. Preferably, the pressure sensor 50 has a display screen, and can display the pressure value in real time.

In a preferred embodiment, the platen sleeve 41 is provided with a first threaded hole (not shown) for engaging with the biasing screw 44, and the bracket assembly 10 is provided with a second threaded hole (not shown) for engaging with the biasing screw 44. The force application screw 44 is fixedly connected with the pressure plate sleeve 41 through a first threaded hole, and moves downwards relative to the bracket assembly 10 in a spiral mode through a second threaded hole to apply pressure downwards, so that the structure is simple, and the operation is convenient.

In a preferred embodiment, one end of the elastic body 43 is connected to the pressure plate sleeve 41, the other end of the elastic body 43 is connected to the guide shaft 42, and the elastic body 43 is a compression spring. Preferably, the elastic body 43 is a compression spring. The compression spring can bear axial pressure, when the force application screw 44 moves downwards, the driving pressure plate sleeve 41 moves downwards to compress the elastic body 43, the elastic body 43 drives the guide shaft 42 to move downwards, and the pressure is transmitted to the follow-up device 30 and the bearing 70 to be tested through the pressure sensor 50.

In a preferred embodiment, the bracket assembly 10 includes a worktable 11, a leg assembly 12 disposed below the worktable 11, and a support assembly 13 disposed above the worktable 11, wherein the support assembly 13 includes two fixed supports 131 disposed in parallel and spaced apart from each other, a pressure plate 132 and a guide plate 133 are sequentially disposed between the two fixed supports 131 from top to bottom, and the second threaded hole is disposed on the pressure plate 132. The leg assembly 12 serves to fixedly support the entire test apparatus, and the seat assembly 13 serves to fixedly support the pressurizing means 40. Preferably, the driving device 60 is disposed on the leg assembly 12, the pressing plate 132 and the guide plate 133 are fixed on the two fixing brackets 131 by screws, and the middle portion of the working table 11 is provided with a receiving hole (not shown) for receiving the bearing seat 35.

In a preferred embodiment, the guide plate 133 is provided with a guide hole (not shown) that fits into the boss 31, and the boss 31 and the guide plate 133 are keyed to each other so that the boss 31 can move in the axial direction thereof relative to the guide hole. Preferably, the sleeve 31 is provided with two keys (not shown) axially symmetrically, and the keys act as a limit for the sleeve 31 to prevent the sleeve 31 from rotating.

In a preferred embodiment, a flexible body (not shown), such as a rubber pad, for increasing the frictional force is provided on the lower end surface of the bearing housing 35. The lower end face of the bearing seat 35 and the outer peripheral face of the bearing 70 to be tested are driven by friction force, and the flexible body is arranged, so that the bearing seat 35 can have enough friction force when contacting the bearing 70 to be tested, and the bearing 35 to be tested is driven to rotate together with the bearing 70 to be tested.

The utility model discloses test device for detecting bearing life's theory of operation: during testing, the force application screws 44 apply downward pressure, the pressure sensor 50 displays a pressure value, the force application screws 35 directly act on the four bearings 70 to be tested, and the force application size of the force application screws 44 is adjusted, so that the radial load of the bearings 70 to be tested is consistent with the actual radial load in the product. The bearing seat 35 is connected with the driving motor 61 through the driving shaft 63 and the coupler 62, the bearing seat 35 provides a rotating force while applying pressure to the bearing 70 to be measured, the rotating speed of the bearing can be the same as the actual rotating speed in a product through calculation so as to simulate the load and the rotating speed in the actual product, therefore, the running state of the bearing 70 to be measured can be continuously observed, the actual running mileage of the bearing can be calculated according to the running number of turns of the driving motor 61, and the data accumulation is facilitated. The utility model discloses a test device for detecting bearing life, simple structure not only, convenient to use, low in production cost can set up load and the rotational speed of applying for the bearing 70 that awaits measuring moreover, tests a plurality of bearing 70's that await measuring life simultaneously, has improved the accuracy of test efficiency and data.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a test device for detect bearing life-span, includes bracket component, its characterized in that: the bearing assembly comprises a bearing assembly, a bearing bracket and a bearing assembly, wherein the bearing assembly is arranged on the bearing bracket and comprises a fixed frame for fixing a bearing to be tested, a follow-up device matched with the bearing to be tested, a pressurizing device for applying pressure to the follow-up device, and a pressure sensor arranged between the pressurizing device and the follow-up device; during detection, the lower end face of the bearing seat is abutted against the outer peripheral face of the bearing to be detected, and the bearing to be detected rotates along with the bearing seat.

2. The test device of claim 1, wherein: the fixing frame is provided with at least two fixing positions for fixing the bearing to be detected, and the fixing positions comprise fixing shafts which are arranged on the fixing frame in the horizontal direction and matched with the bearing to be detected and elastic check rings which are used for axially limiting the bearing to be detected.

3. The test device of claim 1, wherein: the driving device comprises a driving motor arranged on the bracket component, a driving shaft matched with the bearing seat and a coupling connected with the driving motor and the driving shaft.

4. The test device of claim 3, wherein: the lower terminal surface of bearing frame is provided with axial connecting portion, axial connecting portion are provided with the spline groove, the drive shaft be provided with spline groove matched with spline.

5. The test device of claim 1, wherein: the bearing assembly comprises a first bearing and a second bearing which are arranged at the lower part of the shaft sleeve, the first bearing is arranged above the second bearing, the first bearing is a deep groove ball bearing, and the second bearing is a thrust ball bearing.

6. The test device of claim 1, wherein: the pressurizing device comprises a pressing plate sleeve, a guide shaft in sliding connection with the pressing plate sleeve, an elastic body arranged outside the guide shaft in a sleeved mode and a force application screw used for driving the pressing plate sleeve to be opposite to the guide shaft in a sliding mode, the force application screw is arranged on the support component, and the guide shaft is connected with the pressure sensor.

7. The test device of claim 6, wherein: the pressing plate sleeve is provided with a first threaded hole matched with the force application screw, and the support assembly is provided with a second threaded hole matched with the force application screw.

8. The test device of claim 6, wherein: one end of the elastic body is connected with the pressure plate sleeve, the other end of the elastic body is connected with the guide shaft, and the elastic body is a compression spring.

9. The test device of claim 7, wherein: the bracket component comprises a workbench, a support component arranged below the workbench and a support component arranged above the workbench, the support component comprises two fixing supports arranged at intervals in parallel, a pressing plate and a guide plate are sequentially arranged between the fixing supports from top to bottom, and second threaded holes are formed in the pressing plate.

10. The test device of claim 9, wherein: the guide plate is provided with axle sleeve matched with guiding hole, the axle sleeve with pass through the key-type connection between the guide plate, the axle sleeve can be relative guiding hole is along its axial displacement.