Sealing performance testing machine for deep groove ball bearing

Abstract

A deep groove ball bearing sealing performance testing machine comprises a main body lathe bed, a driving assembly, a supporting shaft system, a testing head assembly, an axial loading assembly, a radial loading assembly and a spraying assembly, one end of a testing main shaft in the supporting shaft system is connected with the power output end of the driving assembly, and the other end of the testing main shaft is used as a cantilever end for installing the testing head assembly. The test head assembly comprises an outer shell, the cantilever end extends into the outer shell, the test bearing is located in an inner cavity of the outer shell and installed on the cantilever end, and the axial loading assembly and the radial loading assembly are connected with the outer shell and apply axial loading force and radial loading force to the test bearing. The testing machine can test the test load, the rotating speed, the water spraying amount, the main machine current, the main body vibration and the like in the test process, can be used for researching the waterproof performance of the sealed deep groove ball bearing under the action of pure radial load or axial and radial combined load, and provides a test basis for the use of the bearing and the optimization design of a sealing structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing performance detection technical field, concretely is a deep groove ball bearing sealing performance testing machine. BACKGROUND

[0002] It is known that the deep groove ball bearing is the most commonly used rolling bearing, which has the advantages of simple structure and convenient use, and is mainly used to bear radial load, and can also bear combined load of radial and axial directions; the deep groove ball bearing has open type and sealed type structures, and the sealing performance of the sealed deep groove ball bearing, including dustproof, grease leakage and waterproof performance, has an important influence on the service life. At present, the research on the dustproof and grease leakage performance of the sealed deep groove ball bearing is relatively mature, and relevant standards are formed. For the sealed deep groove ball bearing with the risk of water intrusion in the use occasion, the water intrusion can cause the lubricating grease to fail and internal rust, thereby causing failure and damage, so it is necessary to develop a testing equipment for the sealing and waterproof performance.

[0003] There are also many testing equipments for the waterproof performance of the deep groove ball bearing on the current market, but most of the equipments do not consider the influence of the bearing load, especially the combined load of axial and radial directions, on the waterproof performance, and there are unreasonable factors in the structure, so that the waterproof performance parameters of the deep groove ball bearing detected by the existing testing equipment are quite different from the waterproof performance parameters of the bearing under actual working conditions, thereby causing the test results to be not true. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the purpose of the utility model is to provide a deep groove ball bearing sealing performance testing machine.

[0005] The utility model adopts the technical scheme: a deep groove ball bearing sealing performance testing machine, including main body bed and installing on main body bed's drive assembly, support shaft system, test head subassembly, axial loading assembly, radial loading assembly and be used to the spray set spare of water to test bearing, test main shaft in support shaft system one end is connected with drive assembly's power output end, the other end is as the cantilever end of installing test head subassembly, test head subassembly includes one with inner chamber's outer casing, the cantilever end is inducted to outer casing, test bearing is located in the inner chamber of outer casing and is installed on the cantilever end, axial loading assembly and radial loading assembly are connected with outer casing respectively and are applied axial loading force and radial loading force on test bearing.

[0006] As a preferred scheme, the test head subassembly includes an outer casing, a sealing gland mounted on one side of the outer casing, a bearing seat, and a nozzle, the bearing seat is sleeved on the outer ring of the test bearing, and is connected with the outer casing into an integral structure through a locking piece, the nozzle is mounted on the sealing gland and connected with the spray set spare through a pipeline, and the water spraying end faces the test bearing.

[0007] As a preferred solution, a test bearing is further arranged between the bearing seat and the cantilever end, and the test bearing and the test bearing are isolated by a spacer.

[0008] As a preferred solution, a viewing window made of transparent material is further arranged between one end of the outer shell and the sealing gland, and one end of the nozzle sequentially penetrates the sealing gland and the viewing window.

[0009] As a preferred solution, a water return joint is further arranged at the bottom of the outer shell.

[0010] As a preferred solution, the spray assembly is arranged in the interior of the main body bed, the water inlet pipeline of the spray assembly is connected with the nozzle, and the water return pipeline of the spray assembly is connected with the water return joint.

[0011] As a preferred solution, the axial loading assembly comprises an axial loading support, an axial loading electric cylinder, an axial loading spring and an axial loading seat, the axial loading force output by the axial loading electric cylinder is transmitted to the axial loading seat through the axial loading spring, and the axial loading seat is connected with the sealing gland in the test head assembly.

[0012] As a preferred solution, an axial force sensor is further arranged between the axial loading electric cylinder and the axial loading spring.

[0013] As a preferred solution, the radial loading assembly comprises a radial loading support, a radial loading electric cylinder, a radial loading spring and a radial loading seat, the radial loading force output by the radial loading electric cylinder is transmitted to the radial loading seat through the radial loading spring, and the radial loading seat is connected with the outer shell in the test head assembly.

[0014] As a preferred solution, a radial force sensor is further arranged between the radial loading electric cylinder and the radial loading spring.

[0015] The beneficial effects of the utility model are as follows:

[0016] Based on the defects existing in the prior art, the scheme provides a deep groove ball bearing sealing performance testing machine which is composed of a test head assembly, a support shaft system, an axial loading assembly, a radial loading assembly, a driving assembly and a spraying assembly. By optimizing the structural design, the test head assembly is installed at the cantilever end of the support shaft system, and has the advantages of convenient assembly and disassembly. Meanwhile, the axial and radial loading is loaded by an electric cylinder, and the loading force is applied to the test bearing seat in the test head assembly and is transmitted to the test bearing through the bearing seat. The driving system directly drives by using a high-speed synchronous motor, and provides the required rotating speed in the test. The spraying system is installed inside the main body bed, and the water volume is controllable. Through the above equipment, the test load, rotating speed, water volume, main machine current and main body vibration can be tested and recorded during the test. Therefore, the waterproof performance of the sealed deep groove ball bearing under the action of pure radial load or axial and radial composite load can be researched, and the test basis is provided for the use and sealing structure optimization design of the bearing. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 The structural schematic diagram of the testing machine is shown in the present application.

[0019] Figure 2 The structural schematic diagram of the test head assembly in the present application is shown.

[0020] Figure 3 The structural schematic diagram of the axial and radial loading assembly in the present application is shown.

[0021] The drawings are as follows: 1-main body bed; 2-spraying assembly; 3-axial loading assembly; 4-test head assembly; 5-radial loading assembly; 6-support shaft system; 7-driving assembly; 8-sealing gland; 9-nozzle; 10-axial loading seat; 11-observation window; 12-radial loading seat; 13-bearing seat; 14-outer shell; 15-test bearing; 16-accompanied test bearing; 17-test main shaft; 18-backwater joint; 19-axial loading support; 20-axial loading electric cylinder; 21-axial force sensor; 22-axial loading spring; 23-radial loading electric cylinder; 24-radial force sensor; 25-radial loading spring; 26-radial loading support. DETAILED DESCRIPTION

[0022] The utility model will be described in detail below through exemplary embodiments. However, it should be understood that the elements, structures and features in one embodiment can also be beneficially combined into other embodiments without further elaboration.

[0023] It should be noted that: unless otherwise defined, the technical terms or scientific terms used herein should be understood as the usual meaning understood by those skilled in the art to which the utility model belongs; the "one", "a" or "the" and similar words used in the utility model patent application description and claims do not represent quantity limitation, but indicate that there is at least one; "include" or "contain" and similar words indicate that the elements or objects appearing before "include" or "contain" cover the elements or objects listed after "include" or "contain" and their equivalents, but do not exclude other elements or objects with the same function;

[0024] In order to more clearly describe the specific structure of the deep groove ball bearing sealing performance testing machine, combined with the attached Figures 1-3 Detailed description of the embodiment:

[0025] As Figure 1 The utility model discloses a deep groove ball bearing sealing performance testing machine, mainly by the main body bed 1, install on the main body bed on the drive assembly 7, support shaft system 6, test head subassembly 4, axial loading assembly 3, radial loading assembly 5 and be used to spray water to test bearing spray subassembly 2 are composed, the test main shaft in support shaft system 6 one end is connected with the power output end of drive assembly 7, the other end is as the cantilever end, test head subassembly 4 is used for test bearing's installation, and it is the core of the testing machine, test head subassembly 4 is installed in the cantilever end of support shaft system 6, has the advantage that it is convenient to dismount, wherein the test head subassembly 4 includes a shell with inner chamber, the cantilever end is inlaid into the shell, test bearing is located in the inner chamber of shell and is installed on the cantilever end, axial loading assembly 3 and radial loading assembly 5 are connected with shell respectively, axial loading assembly 3 and radial loading assembly 5 provide the required axial, radial test load for test bearing, spray subassembly 2 is installed in the main body bed 1 inside, and its function is to spray water to test bearing with certain flow, drive assembly 7 adopts high-speed synchronous motor direct drive, is connected with support shaft system through elastic coupling, test load, rotational speed, water amount, main machine current, main body vibration during test process are tested and recorded.

[0026] In the scheme, as Figure 2As shown, the test head assembly 4 comprises an outer housing 14, a sealing gland 8 mounted on one side of the outer housing, a bearing seat 13 and a nozzle 9, wherein the bearing seat 13 is located in the inner cavity of the outer housing 14 and is sleeved on the outer ring of the test bearing 15, and is connected with the outer housing 14 into an integral structure by locking screws, and the nozzle 9 is mounted on the sealing gland 8 and is connected with the spraying assembly through pipelines, and the water spraying end thereof faces the test bearing 15; a test bearing 16 is further arranged between the bearing seat 13 and the cantilever end, and the test bearing 16 and the test bearing 15 are respectively sleeved on the test spindle and are isolated from each other by a spacer; the test bearing 16 serves to increase the reliability of the test head and prevent the test bearing 15 from bearing bending moment due to load; the test bearing 15 bears half of the applied radial force.

[0027] In the scheme, as shown in the figure, Figure 2 A viewing window 11 made of transparent material is further arranged between one end of the outer housing 14 and the sealing gland 8, so as to facilitate the operator to observe the internal condition in time, and one end of the nozzle sequentially penetrates the sealing gland and the viewing window; a water return connector 18 is further mounted on the bottom of the outer housing 14, the water inlet pipeline of the spraying assembly 2 is connected with the nozzle 9, and the water return pipeline thereof is connected with the water return connector 18; during the test, water is sprayed to the sealing cover of the test bearing 15 through the nozzle 9, and is returned to the water tank of the spraying assembly through the water return connector 18.

[0028] It should be noted that the spraying assembly 2 described above is not the innovation point of the scheme, and those skilled in the art can obtain it by using conventional technical means during implementation of the scheme, for example, by using the following structure; the spraying assembly 2 is composed of a water tank, a water pump set, a valve set, a pressure gauge, a flow meter and a matching connecting pipeline.

[0029] In the scheme, the support shaft system 6 comprises a support frame and a test spindle 17 rotatably arranged on the support frame, wherein the support frame is provided with a bearing assembly and a cooling water circulation channel for cooling the bearing assembly.

[0030] In the scheme, as shown in the figure, Figure 2 and Figure 3As shown, the axial loading assembly 3 comprises an axial loading support 19, an axial loading electric cylinder 20, an axial force sensor 21, an axial loading spring 22 and an axial loading seat 10, the axial loading force output by the axial loading electric cylinder 20 is transmitted to the axial loading seat 10 through the axial force sensor 21 and the axial loading spring 22 in sequence, and the axial loading seat 10 is connected with the sealing gland 8 in the test head assembly 4; the radial loading assembly 5 comprises a radial loading support 26, a radial loading electric cylinder 23, a radial force sensor 24, a radial loading spring 25 and a radial loading seat 12, the radial loading force output by the radial loading electric cylinder 23 is transmitted to the radial loading seat 12 through the radial force sensor 24 and the radial loading spring 25 in sequence, and the radial loading seat 12 is connected with the outer shell 14 in the test head assembly 4; in the scheme, the loading mode is a closed-loop loading mode of "electric cylinder + force sensor"; the axial loading spring 22 and the radial loading spring 25 are connected with the axial loading seat 10 and the radial loading seat 12 respectively, which serves to improve the loading control precision by using the elastic characteristics of the spring, and the axial and radial loads are transmitted to the test bearing 15 through the outer shell 14 and the bearing seat 13.

[0031] The parts not described in the above embodiments are prior art.

[0032] It should be noted that although the structure of the deep groove ball bearing sealing performance testing machine is described through the above embodiments, the present application can also have other various embodiments. Those skilled in the art can obviously make various corresponding changes and modifications to the present application without departing from the spirit and scope of the present application, but these changes and modifications should belong to the scope of the appended claims and their equivalents of the present application.

Claims

1. A deep groove ball bearing sealing performance testing machine, characterized in that: The device includes a main bed and a drive assembly, a support shaft system, a test head assembly, an axial loading assembly, a radial loading assembly, and a spray assembly for spraying water onto the test bearing, all mounted on the main bed. One end of the test spindle in the support shaft system is connected to the power output end of the drive assembly, and the other end serves as a cantilever end for mounting the test head assembly. The test head assembly includes an outer shell with an inner cavity. The cantilever end extends into the outer shell, and the test bearing is located in the inner cavity of the outer shell and mounted on the cantilever end. The axial loading assembly and the radial loading assembly are respectively connected to the outer shell and apply axial and radial loading forces to the test bearing.

2. The deep groove ball bearing sealing performance testing machine according to claim 1, characterized in that: The test head assembly includes an outer shell, a sealing cap installed on one side of the outer shell, a bearing seat, and a nozzle. The bearing seat is fitted onto the outer ring of the test bearing and is connected to the outer shell as an integral structure by a locking member. The nozzle is installed on the sealing cap and connected to the spray assembly through a pipeline, with its spray end facing the test bearing.

3. The deep groove ball bearing sealing performance testing machine according to claim 2, characterized in that: A test bearing is also provided between the bearing housing and the cantilever end, and the test bearing and the test bearing are isolated by a spacer.

4. The deep groove ball bearing sealing performance testing machine according to claim 2, characterized in that: An observation window made of transparent material is provided between one end of the outer shell and the sealing cover, and one end of the nozzle passes through the sealing cover and the observation window in sequence.

5. A deep groove ball bearing sealing performance testing machine according to claim 2, characterized in that: A water return connector is also installed at the bottom of the outer casing.

6. The deep groove ball bearing sealing performance testing machine according to claim 5, characterized in that: The spray assembly is installed inside the main bed. The water inlet pipe of the spray assembly is connected to the nozzle, and its return water pipe is connected to the return water connector.

7. The deep groove ball bearing sealing performance testing machine according to claim 2, characterized in that: The axial loading assembly includes an axial loading support, an axial loading electric cylinder, an axial loading spring, and an axial loading seat. The axial loading force output by the axial loading electric cylinder is transmitted to the axial loading seat through the axial loading spring. The axial loading seat is connected to the sealing gland in the test head assembly.

8. A deep groove ball bearing sealing performance testing machine according to claim 7, characterized in that: An axial force sensor is also provided between the axial loading electric cylinder and the axial loading spring.

9. A deep groove ball bearing sealing performance testing machine according to claim 2, characterized in that: The radial loading assembly includes a radial loading support, a radial loading electric cylinder, a radial loading spring, and a radial loading seat. The radial loading force output by the radial loading electric cylinder is transmitted to the radial loading seat through the radial loading spring. The radial loading seat is connected to the outer shell in the test head assembly.

10. A deep groove ball bearing sealing performance testing machine according to claim 9, characterized in that: A radial force sensor is also provided between the radially loaded electric cylinder and the radially loaded spring.

Images