Low-temperature torque testing machine for aerospace rolling bearing lubricating grease

Abstract

The utility model discloses a low-temperature torque testing machine for lubricating grease of an aerospace rolling bearing, which is used for measuring the friction torque of a bearing assembly. The testing machine comprises a base, a workbench, a protective cover, a first supporting piece, a second supporting piece, a detection assembly, a force sensor and a low-temperature box, the workbench is arranged on the base; the protective cover is arranged above the base; the first supporting piece is arranged on the workbench in the vertical direction. The second supporting piece is arranged on the top of the first supporting piece in the horizontal direction. The detection assembly passes through the first support member, and the right end is provided with a test shaft and a loading member. The loading piece is rotationally connected to the test shaft through the bearing assembly; the force sensor is arranged on the second supporting piece and is connected with the loading piece through a pull rope; and the low-temperature box is arranged on the workbench and is arranged in the protective cover. By means of the arrangement, the testing machine can simulate the low-temperature environment when the aerospace rolling bearing works and detect the friction torque of the rolling bearing and the lubricating grease assembly, and the practicability of the testing result is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of aerospace bearings, in particular to an aerospace rolling bearing grease low-temperature torque testing machine. Background Art

[0002] Rolling bearings are an important component in pressure-bearing equipment. They are used to support mechanical rotating bodies and reduce the friction coefficient during the movement of rotating bodies. They are widely used. Before use, their friction coefficient, rotation accuracy and other parameters need to be tested. The testing of rolling bearings on aerospace rotors is particularly strict.

[0003] Currently, testing aerospace rolling bearing grease typically involves measuring torque with a torque sensor and then calculating the friction torque between the test bearing and grease assembly using a formula. However, existing aerospace rolling bearing grease torque testing machines are unable to simulate the low-temperature environments in which the rolling bearing and grease assembly reside, resulting in limited versatility and practicality of the test results. Utility Model Content

[0004] In order to address the deficiencies of the prior art, the purpose of the present invention is to provide an aerospace rolling bearing grease low-temperature torque testing machine, which can detect the torque characteristics of aerospace rolling bearing components under low-temperature conditions.

[0005] Based on the above purpose, the present invention adopts the following technical solutions:

[0006] A low-temperature torque testing machine for aerospace rolling bearing grease is used to measure the friction torque of a bearing assembly, comprising: a base, a workbench, a protective cover, a first support member, a second support member, a detection assembly, a force sensor and a low-temperature box; the workbench is installed on the base; the protective cover is installed above the base; the first support member is arranged on the workbench in the vertical direction; the second support member is arranged on the top of the first support member in the horizontal direction; the detection assembly at least partially passes through the first support member, and a test shaft and a loading member are provided at the right end; the loading member is rotatably connected to the test shaft through the bearing assembly; the force sensor is at least partially arranged on the second support member, and is connected to the loading member by a pull rope; the low-temperature box is arranged on the workbench and at least partially arranged in the protective cover.

[0007] Furthermore, the detection component also includes a motor, a reducer and a mounting plate; the motor is installed on the right side of the reducer; the reducer at least partially passes through the first support member and is fixedly connected to the first support member through the mounting plate.

[0008] Furthermore, the testing machine also includes an electrical box for controlling the low-temperature box and the detection component, and the electrical box is installed on the base.

[0009] This utility model provides a low-temperature torque tester for aerospace rolling bearing grease. The tester features a cryogenic chamber within its protective cover, simulating the low-temperature environment of rolling bearing grease. A detection assembly drives the bearing assembly, which in turn rotates the loading element. This allows a force sensor to read the friction resistance of the bearing assembly. By multiplying this value by the radius of the bearing seat, the friction torque between the test bearing and the grease assembly is calculated. This test result is closer to the friction torque value of the bearing assembly under operating conditions, making it highly versatile and valuable for reference. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the external structure of the testing machine provided by the utility model;

[0011] Figure 2 It is a schematic diagram of the internal structure of the testing machine provided by the utility model. DETAILED DESCRIPTION

[0012] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0013] At the same time, in order to clearly illustrate the technical solution of this application, the following are also defined: Figure 1 Upper, lower, left, right, front and back sides shown.

[0014] like Figure 1 and Figure 2 As shown, the present application provides an aerospace rolling bearing grease low-temperature torque tester for testing the friction torque of a bearing assembly 20, wherein the bearing assembly 20 includes a test bearing and a grease assembly. The tester includes: a base 11, a workbench 12, a protective cover 13, a first support member 14, a second support member 15, a detection assembly 16, a force sensor 17, and a cryogenic chamber 18.

[0015] Specifically, the workbench 12 is mounted on the base 11 and is used to carry other equipment of the testing machine. The protective cover 13 is mounted on the base 11 to protect personnel around the testing machine and facilitate the low-temperature box 18 to provide a low-temperature environment. The first support member 14 is arranged on the workbench 12 in the vertical direction. The second support member 15 is arranged on the top of the first support member 14 in the horizontal direction. The detection component 16 at least partially passes through the first support member 14, and a test shaft 161 and a loading member 30 are provided at the right end. Among them, the loading member 30 is rotatably connected to the test shaft 161 through a bearing assembly 20. The force sensor 17 is at least partially arranged on the second support member 15, and is connected to the loading member 30 through a pull rope 19, and is used to read the friction resistance of the bearing assembly 20. The low-temperature box 18 is set on the workbench 12 and at least partially arranged in the protective cover 13 to provide a low-temperature testing environment.

[0016] Through the above-mentioned setting, the low-temperature box 18 can simulate the low-temperature environment in which the bearing assembly 20 is working. After isothermal treatment for a preset time, the detection assembly 16 rotates at an extremely low speed so that the test shaft 161 drives the bearing assembly 20 to make the loader 30 have a follow-up tendency through friction resistance. The friction resistance can be transmitted to the force sensor 17 through the pull rope 19; by reading the value of the friction resistance and multiplying it by the bearing seat radius of the test bearing, the friction torque between the test bearing and the grease assembly in the bearing assembly 20 can be obtained. The test result is closer to the friction torque of the bearing assembly 20 when it is actually working, and has higher versatility and reliability, and is more valuable for reference.

[0017] like Figure 1 As shown, the top of the first support member 14 passes through the protective cover 13 , so that the second support member 15 and the force sensor 17 are arranged above the protective cover 13 so that the experimenter can read the friction resistance of the bearing assembly 20 .

[0018] like Figure 2 As shown, the detection assembly 16 also includes a motor 162, a reducer 163, and a mounting plate 164. The motor 162 is mounted to the right of the reducer 163 and is used to drive the reducer 163 to rotate. The reducer 163 at least partially passes through the second support member 15 and is fixedly connected to the second support member 15 via the mounting plate 164. The reducer 163 is also connected to the test shaft 162, driving the test shaft 161 to rotate.

[0019] More specifically, the testing machine further includes an electrical box 21 for controlling the low-temperature box 18 and the detection assembly 16. The electrical box 21 is installed on the workbench 12 to facilitate the experimenter to control the testing machine.

[0020] The above is a description of the embodiments of the present invention. Through the above description of the disclosed embodiments, professional and technical personnel in the field can implement or use the present invention. Various modifications to these embodiments will be obvious to professional and technical personnel in the field. The general principles defined in this article can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An aerospace rolling bearing grease low temperature torque tester for measuring the friction torque of a bearing assembly, characterized in that: include: Base (11); A workbench (12), the workbench (12) being mounted on the base (11); A protective cover (13), the protective cover (13) being installed above the base (11); a first support member (14), the first support member (14) being arranged on the workbench (12) in a vertical direction; a second support member (15), the second support member (15) being arranged on top of the first support member (14) in a horizontal direction; A detection component (16), wherein the detection component (16) is at least partially passed through the first support member (14), and a test shaft (161) and a loading member (30) are provided at the right end; the loading member (30) is rotatably connected to the test shaft (161) via a bearing component (20). a force sensor (17), the force sensor (17) being at least partially disposed on the second support member (15) and connected to the loading member (30) via a pull rope (19); A low-temperature box (18), wherein the low-temperature box (18) is disposed on the workbench (12) and is at least partially disposed within the protective cover (13).

2. The aerospace rolling bearing grease low temperature torque tester according to claim 1, characterized in that: The detection assembly (16) further includes a motor (162), a reducer (163), and a mounting plate (164); the motor (162) is mounted on the right side of the reducer (163); the reducer (163) at least partially passes through the first support member (14) and is fixedly connected to the first support member (14) via the mounting plate (164).

3. The aerospace rolling bearing grease low temperature torque tester according to claim 2, characterized in that: The testing machine further comprises an electrical box (21) for controlling the low-temperature box (18) and the detection assembly (16), and the electrical box (21) is mounted on the base (11).

Images