Lubricant bearing wear test device

Abstract

The utility model discloses a lubricant bearing wear test device. The lubricant bearing wear test device comprises a base, a driving motor, a rotating assembly, a heat preservation box, a test assembly, a pressurization assembly and a detection assembly, the driving motor and the rotating assembly are at least partially arranged on the base, and the rotating assembly comprises a shell and a main shaft arranged in the shell; the spindle is rotationally connected with the driving motor; the heat preservation box is arranged at the end, away from the driving motor, of the rotating assembly and connected with the rotating assembly. The test assembly is arranged in the heat preservation box and comprises a shaft shell, a bearing seat and a rotating part; the rotating piece is at least partially arranged in the shaft shell and connected with the main shaft. The bearing seat is at least partially arranged between the rotating piece and the shaft shell; a test bearing is arranged in the bearing seat; the pressurizing assembly is arranged at one end, away from the rotating assembly, of the testing assembly and connected with the testing assembly; the detection assembly is connected with the bearing seat. Through the arrangement, the test device can evaluate the extrusion bearing capacity and the wear resistance of the lubricant at the same time, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing detection, in particular to a lubricant bearing wear test device. Background Art

[0002] Motor bearings are an essential part of motors. They ensure the normal operation of motors by reducing friction and supporting the rotor. Therefore, it is very important to regularly inspect and maintain motor bearings, which can extend the service life of the bearings and improve the reliability of the motors.

[0003] Bearing detection includes detecting the wear resistance of bearings and the performance of bearing lubricants (lubricating oil / grease). Taking grease as an example: the anti-extrusion load-carrying capacity of grease can be evaluated by the four-ball method (ASTM D-2596) and the Timken method (ASTM D-2509). Among them, the four-ball method is a point contact, and the test results are more clear for reference of ball bearings; the Timken method is a line contact, and the test results are more clear for reference of roller bearings. However, neither of these two test methods uses rolling bearings, and the tests are carried out at room temperature. It is difficult for the test results to reflect the influence of temperature and the friction force during the movement of rolling bearings on the anti-extrusion and anti-wear performance of grease. Summary of the Utility Model

[0004] In order to solve the deficiencies of the prior art, the purpose of the utility model is to provide a lubricant bearing wear test device. This device can test the anti-extrusion and anti-wear performance of lubricants under the influence of bearing axial load and temperature.

[0005] Based on the above purpose, the utility model adopts the following technical solutions:

[0006] A lubricant bearing wear test device includes: a base, a driving motor, a rotating assembly, a heat preservation box, a test assembly, a pressurizing assembly, and a detection assembly; the driving motor is at least partially arranged on the base; the rotating assembly is at least partially arranged on the base and includes a housing and a main shaft arranged in the housing; the main shaft is rotationally connected to the driving motor, and the driving motor can drive the main shaft to rotate; the heat preservation box is arranged at one end of the rotating assembly away from the driving motor and is connected to the rotating assembly; the test assembly is at least partially arranged in the heat preservation box and includes a shaft housing, a bearing seat, and a rotating part; the rotating part is at least partially arranged in the shaft housing and is connected to the main shaft and can rotate coaxially with the main shaft; the bearing seat is at least partially arranged between the rotating part and the shaft housing and is connected to the rotating part and the shaft housing; a test bearing is arranged in the bearing seat; the pressurizing assembly is arranged at one end of the test assembly away from the rotating assembly and is connected to the test assembly; the detection assembly is connected to the bearing seat.

[0007] Further, the rotating part includes a core shaft and a screw; the core shaft is at least partially sleeved on the screw, and the core shaft is connected to the main shaft and can rotate coaxially with the main shaft.

[0008] Further, the pressurizing assembly includes a load sleeve and a disc spring disposed within the load sleeve; the disc spring abuts at least partially against the mandrel and is in clearance fit with the screw rod at least partially.

[0009] Further, a connecting portion is provided around the circumferential surface of the load sleeve, and the load sleeve is connected to the shaft housing through the connecting portion.

[0010] Further, a positioning ring is provided around the circumferential surface of the load sleeve, and the connecting portion is at least partially disposed within the positioning ring.

[0011] Further, gland covers are respectively provided at the left and right ends of the bearing housing, and the gland covers are connected to the mandrel.

[0012] Further, a coupling for connecting the main shaft and the drive motor is provided therebetween.

[0013] Further, the detection assembly includes a support rod, a force sensor and a connecting rod; the support rod is at least partially disposed on the base or the housing; the force sensor is disposed at the top of the support rod and is connected to the connecting rod at the lower end; the connecting rod is connected or inserted into the shaft housing.

[0014] The present utility model provides a lubricant bearing wear test device. By providing a heat preservation box, the test device prevents the frictional heat generated during the operation of the test bearing from being lost, so as to simulate the working conditions of the test bearing under high temperature conditions; meanwhile, the test device is also provided with a pressurizing assembly, which can provide a large axial load to the test bearing, so as to evaluate the anti-extrusion load-bearing capacity and anti-wear performance of the lubricant on the test bearing. In addition, during the test, the test bearing can be operated under given load, speed and temperature through the heat preservation box and the pressurizing assembly, and the correlation curve between the frictional torque of the test bearing and the running time is recorded to reflect the frictional characteristics of the grease. Description of the Drawings

[0015] Figure 1 is a schematic structural view of the test device provided according to the present utility model;

[0016] Figure 2 is a sectional view of the test device provided according to the present utility model. Detailed Embodiments

[0017] The following combines the embodiments of the present utility model, and the technical solutions in the embodiments are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] Such as Figures 1 to 2As shown in the figure, this embodiment provides a lubricant bearing wear test device. The device includes a base 11, a drive motor 12, a rotating assembly 13, a heat preservation box 14, a test assembly 15, a pressurization assembly 16, and a detection assembly 17. Specifically, the drive motor 12 is at least partially disposed on the base 11. The rotating assembly 13 is at least partially disposed on the base 11 and includes a housing 131 and a main shaft 132 disposed within the housing 131. The main shaft 132 is rotationally connected to the drive motor 12, and the drive motor 12 can drive the main shaft 132 to rotate. The heat preservation box 14 is disposed at one end of the rotating assembly 13 away from the drive motor 12 and is connected to the rotating assembly 13. The test assembly 15 is at least partially disposed within the heat preservation box 14 and includes a shaft housing 151, a bearing seat 152, and a rotating member 153. The rotating member 153 is at least partially disposed within the shaft housing 151, is connected to the main shaft 132, and can rotate coaxially with the main shaft 132. The bearing seat 152 is at least partially disposed between the rotating member 153 and the shaft housing 151 and is connected to the rotating member 153 and the shaft housing 151. A test bearing 154 is provided within the bearing seat 152, and the heat preservation box 14 is used to prevent the frictional heat generated between the test bearing 154 and the bearing seat 152 from dissipating, thereby simulating the working conditions of the test bearing 154 under high-temperature conditions. The pressurization assembly 16 is disposed at one end of the test assembly 15 away from the rotating assembly 13 and is connected to the test assembly 15. It can provide a large axial load to the test bearing 154 to evaluate the anti-extrusion load-bearing capacity and anti-wear performance of the grease on the test bearing 154. The detection assembly 17 is connected to the bearing seat 152 to detect the frictional resistance value between the test bearing 154 and the bearing seat 152, thereby obtaining a correlation curve of the frictional torque of the test bearing 154 and the running time, reflecting the frictional characteristics of the lubricant. To clearly illustrate the technical solution of the present application, the upper side, lower side, front side, rear side, left side, and right side as shown in Figure 1 are also defined.

[0019] Through the above settings, the test device provided by the present application can simultaneously evaluate the anti-extrusion load-bearing capacity and anti-friction and wear resistance of the lubricant, and can also simulate the working conditions of the test bearing 154 under high-temperature conditions, greatly improving the test efficiency and accuracy of the test bearing 154.

[0020] As Figure 2 shown, the rotating member 153 includes a core shaft 1531 and a screw 1532. Among them, the core shaft 1531 is at least partially sleeved on the screw 1532, and the screw 1532 is used to limit the movement of the core shaft 1531 along the bearing direction. The core shaft 1531 is connected to the main shaft 132 and can rotate coaxially with the main shaft 132.

[0021] The pressurizing assembly 16 includes a load sleeve 161 and a disc spring 162. Among them, the disc spring 162 is at least partially disposed within the load sleeve 161. The disc spring 162 abuts at least partially against the mandrel 1531 and has a clearance fit with at least part of the screw 1532 to apply bearing pressure to the rotating member 153, thereby providing a large axial load to the test bearing 154 to evaluate the extrusion bearing capacity of the test bearing 154.

[0022] Further, a connecting portion 163 is provided around the circumferential surface of the load sleeve 161, and the load sleeve 161 is connected to the shaft housing 151 through the connecting portion 163.

[0023] Furthermore, a positioning ring 164 is provided around the circumferential surface of the load sleeve 161, and the connecting portion 163 is at least partially disposed within the positioning ring 164. By changing the diameter of the positioning ring 164, the axial length of the disc spring 162 can be adjusted, thereby changing the magnitude of the axial load of the test bearing 154.

[0024] Gland covers 155 are respectively provided at both ends of the bearing housing 152, and the gland covers 155 are connected to the mandrel 1531. The gland covers 155 can limit the movement of the bearing housing 152 in the axial direction of the mandrel 1531.

[0025] As Figure 1 and Figure 2 shown, a coupling 18 for connecting the main shaft 132 and the drive motor 12 is provided therebetween.

[0026] The detection assembly 17 includes a support rod 171, a force sensor 172, and a connecting rod 173. The support rod 171 is at least partially disposed on the base 11 or the housing 131. The force sensor 172 is disposed at the top of the support rod 171 and is connected to the connecting rod 173 at the lower end. The connecting rod 173 is connected or inserted into the shaft housing 151 to restrict the rotation of the shaft housing 151, thereby reading the friction resistance value between the bearing housing 152 and the test bearing 154 through the force sensor 172, and then obtaining the friction torque of the test bearing 154. According to the correlation curve between the friction torque of the test bearing 154 and the running time, the friction characteristics of the lubricant can be reflected.

[0027] The present application also provides an operation method for the above test device. The method includes: before the test, applying or supplying a lubricant to the test bearing 154, and fixedly installing the test bearing 154 on the bearing seat 152. The operating speed, temperature, and load of the test bearing 154 are given by the drive motor 12, the incubator 14, and the pressurizing assembly 16; the test bearing 154 operates under this working condition until it is stopped when the frictional torque exceeds a preset value due to poor lubrication or when the desired service life is reached. The anti-extrusion and wear characteristics of the lubricant are evaluated based on the weight reduction of the test bearing 154 and the test device before and after the experiment. The correlation curve of the frictional torque of the test bearing 154 and the running time recorded during the test can reflect the friction characteristics of the lubricant.

[0028] The above is the description of the embodiments of the present utility model. Through the above description of the disclosed embodiments, those skilled in the art can implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel points disclosed herein.

Claims

1. A lubricant bearing wear test device, characterized in that, Comprising: Base (11); Drive motor (12), at least part of the drive motor (12) is arranged on the base (11); Rotating assembly (13), at least part of the rotating assembly (13) is arranged on the base (11), including a housing (131) and a main shaft (132) arranged inside the housing (131); the main shaft (132) is rotationally connected to the drive motor (12), and the drive motor (12) can drive the main shaft (132) to rotate; Insulation box (14), the insulation box (14) is arranged at one end of the rotating assembly (13) away from the drive motor (12) and is connected to the rotating assembly (13); Testing assembly (15), at least part of the testing assembly (15) is arranged inside the insulation box (14), including a shaft housing (151), a bearing seat (152) and a rotating member (153); at least part of the rotating member (153) is arranged inside the shaft housing (151), is connected to the main shaft (132), and can rotate coaxially with the main shaft (132); at least part of the bearing seat (152) is arranged between the rotating member (153) and the shaft housing (151) and is connected to the rotating member (153) and the shaft housing (151); a testing bearing (154) is arranged inside the bearing seat (152); Pressurizing assembly (16), the pressurizing assembly (16) is arranged at one end of the testing assembly (15) away from the rotating assembly (13) and is connected to the testing assembly (15); Detection assembly (17), the detection assembly (17) is connected to the bearing seat (152).

2. The lubricant bearing wear test device according to claim 1, wherein, The rotating member (153) includes a core shaft (1531) and a screw (1532); at least part of the core shaft (1531) is sleeved on the screw (1532), is connected to the main shaft (132), and can rotate coaxially with the main shaft (132).

3. The lubricant bearing wear test device according to claim 2, wherein, The pressurizing assembly (16) includes a load sleeve (161) and a disc spring (162) arranged inside the load sleeve (161); at least part of the disc spring (162) abuts against the core shaft (1531) and has a clearance fit with at least part of the screw (1532).

4. The lubricant bearing wear test device according to claim 3, characterized in that, A connecting portion (163) is arranged around the circumferential surface of the load sleeve (161), and the load sleeve (161) is connected to the shaft housing (151) through the connecting portion (163).

5. The lubricant bearing wear test device according to claim 4, characterized in that, A positioning ring (164) is arranged around the circumferential surface of the load sleeve (161), and at least part of the connecting portion (163) is arranged inside the positioning ring (164).

6. The lubricant bearing wear test device according to claim 2, wherein, Gland covers (155) are respectively arranged at the left and right ends of the bearing seat (152), and the gland covers (155) are connected to the core shaft (1531).

7. The lubricant bearing wear test device according to claim 1, characterized in that, A coupling (18) for connecting the two is arranged between the main shaft (132) and the drive motor (12).

8. The lubricant bearing wear test device according to claim 1, characterized in that, The detection component (17) includes a support rod (171), a force sensor (172) and a connecting rod (173); at least part of the support rod (171) is arranged on the base (11) or the housing (131); the force sensor (172) is arranged at the top of the support rod (171), and the lower end is connected to the connecting rod (173); the connecting rod (173) is connected or inserted into the shaft housing (151).

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