CN219084053U

CN219084053U - Radial clearance measuring device for rod end joint bearing

Info

Publication number: CN219084053U
Application number: CN202223328397.6U
Authority: CN
Inventors: 张少轩; 谢贞轩; 何家鑫; 赵成; 李银龙
Original assignee: Shanghai Bearing Technology Research Institute Co ltd
Current assignee: Shanghai Bearing Technology Research Institute Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-05-26
Anticipated expiration: 2032-12-12

Abstract

The utility model provides a radial clearance measuring device for rod end joint bearings, which belongs to the technical field of engineering machinery test equipment, wherein a PLC is connected with a displacement sensor to measure radial displacement of the rod end joint bearings, the rod end joint bearings are reasonably positioned and installed by a fixing device, and the measuring piece and the measuring device are ensured to be positioned on the same vertical line under the condition of radial force by using a self-aligning ball bearing, so that the measuring precision is improved, the clearance of the rod end joint bearings with different specifications can be measured, the universalization degree is high, the repeated disassembly and assembly are convenient, and the device is suitable for measuring the clearance of the rod end joint bearings with different specifications.

Description

Radial clearance measuring device for rod end joint bearing

Technical Field

The utility model relates to the technical field of engineering machinery test equipment, in particular to a radial clearance measuring device for a rod end joint bearing.

Background

Bearing play is defined as the amount of movement of one ferrule in a radial or axial direction from one extreme position to the other, and is correspondingly referred to as radial play and axial play in the direction of its movement. Play is an important parameter of the bearing, which mainly affects the load distribution, noise, vibration, friction, life, accuracy and rigidity of the bearing. The measurement of play and the accuracy of the measurement have an important influence on the performance of the bearing.

At present, there are fresh published materials at home and abroad related to the development of a self-lubricating joint bearing clearance detection instrument. Only the self-lubricating bearing commonality technical laboratory of the Yanshan university is researched and developed for the detection device of the clearance of the joint bearing, and fills the blank of the clearance measuring instrument of the joint bearing in China.

The rod end joint bearing is formed by assembling a rod end body and the joint bearing, the rod end joint bearing is difficult to measure radial clearance after being matched with the rod, and the measuring precision of the existing joint bearing clearance detection device is not high.

According to the search of the prior art, the Chinese patent publication No. CN102175204A discloses a detection device for measuring the axial clearance and the radial clearance of the knuckle bearing. The device consists of a dynamometer, a clearance measuring instrument, a loading sliding table, an unloading sliding table, a bearing clamp and a rack. The bearing clamp is used for installing the joint bearing between the two dynamometers, the dynamometers are arranged on the loading/unloading sliding table, and the loading/unloading sliding table is arranged on the rack; the clearance measuring instrument is fixed on the frame. The utility model has the problem of low measurement precision of the radial clearance, so that a device for measuring the radial clearance of the rod end joint bearing for ensuring the measurement precision needs to be designed.

Disclosure of Invention

In view of the drawbacks of the prior art, an object of the present utility model is to provide a rod end joint bearing radial play measurement device.

The utility model provides a radial clearance measuring device for a rod end joint bearing, which comprises the rod end joint bearing, a positioning and fixing device, a clamping tool and a self-aligning ball bearing;

the fixing device is used for fixing two sides of the rod end joint bearing, the clamping tool is used for fixing one end of the rod end joint bearing, and the positioning direction axis of the fixing device is perpendicular to the positioning direction axis of the clamping tool;

the clamping tool is connected with the aligning ball bearing, and the rod end joint bearing and the clamping tool are adjusted and kept on the same vertical line through the aligning ball bearing.

In some embodiments, the device further comprises a PLC and a displacement sensor, wherein the PLC is electrically connected with the displacement sensor, and the displacement sensor senses the magnitude of displacement and the displacement fluctuation of the rod end joint bearing through the measurement of the PLC.

In some embodiments, the displacement sensor is coupled to one end of the rod end joint bearing.

Some embodiments further include a pressure sensor electrically coupled to the pressure sensor, the pressure sensor sensing a magnitude of force and a magnitude of fluctuation of force on the rod end joint bearing via the PLC measurement.

In some embodiments, the device further comprises a servo driver and a servo electric cylinder, wherein the PLC is electrically connected with the servo driver, and the servo driver is electrically connected with the servo electric cylinder, and the servo electric cylinder applies a required radial force.

In some embodiments, the servo electric cylinder is connected with the pressure sensor, the pressure sensor is connected with the aligning ball bearing, and the aligning ball bearing is connected with the clamping tool.

Some embodiments further include a seat supporting the fixture, the seat axially positioning the rod end joint bearing with the fixture.

In some embodiments, a locking nut is disposed on the clamping tool, one end of the rod end joint bearing is connected with the clamping tool through the locking nut, and the locking nut and the clamping tool adjust the tension and compression degree of the rod end joint bearing.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the rod end joint bearing and the clamping tool are adjusted by arranging the aligning ball bearing, so that the rod end joint bearing and the clamping tool are kept on the same vertical line after being stressed, the positioning is accurate, and the measuring precision is ensured;

2. the utility model can be matched and installed with rod end joint bearings with different specifications and sizes by arranging the clamping tool and the positioning and fixing device, has high universality, can be suitable for measuring radial clearance of the rod end joint bearings with different specifications, and is convenient to repeatedly assemble and disassemble.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

FIG. 1 is a schematic illustration of a rod end joint bearing radial play measurement device of the present utility model;

FIG. 2 is a schematic illustration of a radial play measurement of a rod end joint bearing radial play measurement device of the present utility model.

Reference numerals:

PLC1 clamping tool 7

Displacement sensor 2 aligning ball bearing 8

Pressure sensor 9 of rod end joint bearing 3

Servo electric cylinder 10 of fixing device 4

Support 5 servo drive 11

Lock nut 6

Detailed Description

The present utility model will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present utility model.

The utility model comprises a rod end joint bearing 3, a positioning and fixing device 4, a clamping tool 7 and a self-aligning ball bearing 8. The two sides of the rod end joint bearing 3 are fixed by the fixing device 4, one end of the rod end joint bearing 3 is fixed by the clamping tool 7, and the positioning direction axis of the fixing device 4 is mutually perpendicular to the positioning direction axis of the clamping tool 7. The clamping tool 7 is connected with a self-aligning ball bearing 8, and the rod end joint bearing 3 and the clamping tool 7 are adjusted and kept on the same vertical line through the self-aligning ball bearing 8.

The utility model also comprises a PLC1 and a displacement sensor 2, wherein the PLC1 is electrically connected with the displacement sensor 2. The displacement sensor 2 senses the magnitude of displacement and the displacement fluctuation of the rod end joint bearing 3 through the PLC1 measurement. The displacement sensor 2 is connected to one end of the rod end joint bearing 3. The utility model also comprises a pressure sensor 9, the plc1 being electrically connected to the pressure sensor 9. The pressure sensor 9 senses the magnitude of the force and the amount of fluctuation of the force on the rod end joint bearing 3 through the PLC1 measurement. The utility model further comprises a servo driver 11 electrically connected to the servo cylinder 10, the plc1 electrically connected to the servo driver 11, and the servo driver 11 electrically connected to the servo cylinder 10. The servo electric cylinder 10 is connected with the pressure sensor 9, the pressure sensor 9 is connected with the aligning ball bearing 8, and the aligning ball bearing 8 is connected with the clamping tool 7. The utility model further comprises a support 5, wherein the support 5 supports the fixing device 4, and the support 5 and the fixing device 4 axially position the rod end joint bearing 3. The clamping tool 7 is provided with a lock nut 6, and one end of the rod end joint bearing 3 is connected with the clamping tool 7 through the lock nut 6.

As shown in FIG. 1, the SAXDT rod end joint bearing radial clearance measuring device comprises a PLC1, a displacement sensor 2, a positioning and fixing device 4, a support 5, a lock nut 6, a clamping tool 7, a self-aligning ball bearing 8, a pressure sensor 9, a servo electric cylinder 10 and a servo driver 11. The test piece is: SAXDT rod end joint bearing 3 after 1000h durability test.

The computer is connected with the PLC1, the PLC1 is connected with the displacement sensor 2, the pressure sensor 9 and the servo driver 10, the displacement sensor 2 is connected with the SAXDT rod end joint bearing 3, and the SAXDT rod end joint bearing is axially compressed by the support 5 and the fixing device 4, so that the axial positioning is ensured.

Through SAXDT rod end joint bearing 3 lower extreme threaded connection lock nut 6 and clamping frock 7, clamping frock 7 reconnection aligning ball bearing 8, aligning ball bearing 8 connects pressure sensor 9, connect servo electric cylinder 10 by pressure sensor 09, servo driver 11 is connected to electric cylinder 10, servo driver 11 connects PLC1, PLC1 connects the computer end, after the applied load 50N, aligning ball bearing 8 and SAXDT rod end joint bearing 3's aligning function can be in same perpendicular line after the atress and guarantee measurement accuracy, through the measurement, as shown in FIG. 2, can directly read out radial play value on the display and be 30.9 mu m.

In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.

The foregoing describes specific embodiments of the present utility model. It is to be understood that the utility model is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the utility model. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.

Claims

1. The radial clearance measuring device for the rod end joint bearing is characterized by comprising a rod end joint bearing (3), a positioning and fixing device (4), a clamping tool (7) and a self-aligning ball bearing (8);

the fixing device (4) is used for fixing two sides of the rod end joint bearing (3), the clamping tool (7) is used for fixing one end of the rod end joint bearing (3), and the axis of the locating direction of the fixing device (4) is mutually perpendicular to the axis of the locating direction of the clamping tool (7);

the clamping tool (7) is connected with the aligning ball bearing (8), and the rod end joint bearing (3) and the clamping tool (7) are adjusted and kept on the same vertical line through the aligning ball bearing (8).

2. A rod end joint bearing radial play measurement device according to claim 1, further comprising a PLC (1) and a displacement sensor (2), the PLC (1) being electrically connected to the displacement sensor (2).

3. A rod end joint bearing radial play measuring device according to claim 2, characterized in that the displacement sensor (2) is connected to one end of the rod end joint bearing (3).

4. A rod end joint bearing radial play measurement device according to claim 2, further comprising a pressure sensor (9), wherein the PLC (1) is electrically connected to the pressure sensor (9).

5. A rod end joint bearing radial play measurement device according to claim 4, further comprising a servo driver (11) and a servo motor cylinder (10), wherein the PLC (1) is electrically connected to the servo driver (11), and wherein the servo driver (11) is electrically connected to the servo motor cylinder (10).

6. Rod end joint bearing radial play measuring device according to claim 5, characterized in that the servo motor cylinder (10) is connected to the pressure sensor (9), the pressure sensor (9) is connected to the aligning ball bearing (8), and the aligning ball bearing (8) is connected to the clamping fixture (7).

7. A rod end joint bearing radial play measuring device according to claim 1, further comprising a seat (5), said seat (5) supporting said fixture (4), said seat (5) axially positioning said rod end joint bearing (3) with said fixture (4).

8. The rod end joint bearing radial clearance measuring device according to claim 1, wherein a lock nut (6) is arranged on the clamping tool (7), and one end of the rod end joint bearing (3) is connected with the clamping tool (7) through the lock nut (6).