Bearing retainer simulation test platform

Abstract

The utility model discloses a simulation test platform for a bearing retainer. The simulation test platform comprises a box body with a cabinet door; the friction test assembly is installed in the box body through a vibration box with a vibration motor, and the vacuum assembly is communicated with the top end of the box body through a vacuum pump; the electromagnetic valve is communicated with the pressure relief opening of the box body; the connecting assembly is detachably connected with the bearing retainer through a rotating shaft of the motor, and the two ends of the connecting assembly are slidably connected with vertical electric guide rails; the transverse electric guide rails are installed on the inner wall of the box body, the two sets of transverse electric guide rails are symmetrically arranged relative to the friction testing assembly, and the transverse electric guide rails are in sliding connection with the vertical electric guide rails. According to the simulation test platform for the bearing retainer, the problem that the existing test device cannot reflect the use environment with alternating air temperature and the abrasion condition under the long-term use condition is solved.

Description

A bearing cage simulation test platform Technical Field

[0001] This utility model relates to the field of tribology, specifically a bearing cage simulation test platform. Background Technology

[0002] As one of the core components of precision mechanical systems, the tribological properties of precision bearings directly determine the reliability and stability of the entire mechanical system. The cage is a key component of precision bearings, and cages come in various forms and involve many processing steps. Unpredictable defects are inevitably generated during the production process. Minor defects on the cage may lead to abnormal wear of the cage during operation, thereby causing the failure of the entire system. For example, in the aerospace field, slight wear of the cages of gyroscope motors and flywheel bearings can lead to an increase in frictional torque, which in turn can cause the bearing to seize. Therefore, it is essential to develop a bearing cage simulation test platform and accurate and reliable evaluation methods and devices for evaluating the wear resistance of the cage.

[0003] Existing bearing cage testing devices simulate testing under atmospheric pressure in a normal temperature room. For example, application number CN201920071597.7 describes a device for evaluating the wear resistance of bearing cages, which can realistically simulate the operating conditions of the cage and simultaneously evaluate the wear resistance of multiple surfaces of the cage.

[0004] However, the bearing cage is tested in a relatively standard environment under normal temperature and atmospheric pressure. In order to obtain more accurate long-term wear data, a long test time is required. Moreover, the test data can only correspond to the wear conditions obtained under simulated test time and cannot reflect the wear conditions under changing temperature and long-term use conditions. Therefore, a bearing cage simulation test platform is needed to meet people's needs. Summary of the Invention

[0005] One object of this invention is to solve at least the aforementioned problems and / or defects, and to provide at least the advantages described below.

[0006] To achieve these objectives and other advantages according to this utility model, a bearing cage simulation test platform is provided, comprising: a housing with a door; a friction test assembly mounted in the housing via a vibrating chamber equipped with a vibration motor; and further comprising:

[0007] A vacuum assembly, which is connected to the top of the housing via a vacuum pump;

[0008] An electromagnetic valve, which is connected to the pressure relief port of the housing;

[0009] A connecting assembly is detachably connected to a bearing cage via a rotating shaft of a motor, and vertical electric guide rails are slidably connected to both ends of the connecting assembly;

[0010] The transverse electric guide rail is installed on the inner wall of the box, and two sets are symmetrically arranged about the friction test component. The transverse electric guide rail is slidably connected to the vertical electric guide rail.

[0011] Preferably, the structure of the connecting component includes:

[0012] The connecting rod has its two ends slidably connected to the second slide groove of the vertical electric guide rail via the second moving block;

[0013] The motor is located in the middle section of the connecting rod;

[0014] The mounting plate has one end connected to the rotating shaft of the motor and the other end provided with a fixing chuck, which clamps and fixes the bearing cage.

[0015] Preferably, the horizontal electric guide rail is provided with a first sliding groove, and the first moving block of the vertical electric guide rail is slidably connected to the first sliding groove.

[0016] Preferably, an observation window is provided on the side of the housing, directly opposite the friction testing component.

[0017] Preferably, a spring is provided between the vibration box and the bottom plate inside the box.

[0018] This utility model has at least the following beneficial effects:

[0019] (1) This utility model tests the bearing cage by means of a friction test component. During the test, the box is sealed by the cabinet door to achieve a sealed environment. The vacuum component and the solenoid valve work together to form a vacuum environment inside the box. In a vacuum environment, the heat dissipation performance of the material is poor, the decomposition and loss of the lubricating oil on the cage will be accelerated, and the porous material will soften and deform. At this time, the cage under long-term use can be simulated in a short time.

[0020] (2) By cooperating with the horizontal electric guide rail and the vertical electric guide rail, the connecting components can be driven to move back and forth and rise and fall, thereby controlling the position of the bearing cage and making it convenient to replace and install the test workpiece after the test.

[0021] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0022] Figure 1 is a cross-sectional structural diagram of this utility model;

[0023] Figure 2 is a schematic diagram of the overall structure of this utility model;

[0024] Figure 3 is an enlarged structural schematic diagram of part A of Figure 1 of this utility model;

[0025] Figure 4 is an enlarged structural schematic diagram of the connecting component of this utility model;

[0026] Figure 5 is a schematic diagram of the connection method between the horizontal electric guide rail and the vertical electric guide rail of this utility model. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0028] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0029] It should be noted that in the description of this utility model, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0031] Furthermore, in this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] The following is a detailed description of this novel experimental device with reference to the accompanying drawings:

[0033] Figures 1-5 show a bearing cage simulation test platform of the present invention, including: a housing 1 with a cabinet door 11; a friction test assembly 2, which is installed in the housing 1 via a vibration box 22 with a vibration motor 21, and further including:

[0034] Vacuum assembly 3 is connected to the top of the housing 1 via vacuum pump 30;

[0035] Electromagnetic valve 4 is connected to the pressure relief port 12 of the housing 1;

[0036] The connecting component 5 is detachably connected to the bearing cage 6 via the rotating shaft 52 of the motor 51, and vertical electric guide rails 7 are slidably connected to both ends of the connecting component 5.

[0037] The horizontal electric guide rail 8 is installed on the inner wall of the housing 1, and two sets are symmetrically arranged about the friction test assembly 2. The horizontal electric guide rail 8 is slidably connected to the vertical electric guide rail 7.

[0038] Working principle:

[0039] Before testing, the device is placed on the test platform 10. The operator opens the cabinet door 11 of the box and pours abrasive into the vibration box 22. The bearing cage 6 to be tested is installed on the connecting assembly 5. By starting the external power supply, the horizontal electric guide rail 8 drives the vertical electric guide rail 7 to move horizontally, so that the bearing cage 6 moves directly above the abrasive. Then, the vertical electric guide rail 7 drives the connecting assembly 5 to move vertically, so that the bearing cage 6 moves downward until it is inside the vibration box 22 and the abrasive is kept in contact.

[0040] In test preparation, after the operator confirms that the bearing cage 6 is placed in the abrasive, the cabinet door 11 is closed, and the vacuum pump 30 is started by the external power supply. The vacuum pump 30 extracts the gas in the chamber 1. After waiting for a period of time, the chamber 1 is in a vacuum test environment. Then the vacuum pump 30 is turned off. At this time, the motor 51 is started by the external power supply and drives the bearing cage 6 to rotate in the abrasive through the rotating shaft 52. At the same time, the vibration motor 21 is started to drive the vibration box 22 to vibrate, so that the abrasive in the vibration box 22 also vibrates. The cooperation between the motor 51 and the vibration motor 21 allows the abrasive to better and more fully carry out the friction test with the bearing cage 6.

[0041] Because the heat dissipation performance of materials is limited in a vacuum environment, the frictional temperature rise is more obvious, which will accelerate the decomposition and loss of lubricating oil and the softening of porous materials. At the same time, the lubricating oil in the bearing cage 6 will lose weight in a vacuum environment. Under this environment, simulation testing can be accelerated to simulate the friction of the bearing cage 6 under long-term use in a short period of time.

[0042] Furthermore, by opening the solenoid valve 4, external gas is allowed to re-enter the chamber 1 through the pressure relief port 12, thus releasing the vacuum environment in the chamber 1. Then, the solenoid valve 4 is closed, and the vacuum pump 30 is used again to extract air and restore the vacuum state inside the chamber 1. By repeatedly performing negative pressure and pressurization operations, the air pressure inside the chamber 1 changes repeatedly. Since the air pressure changes will cause the temperature to rise and fall synchronously, this test method can simulate the test environment of repeated high and low temperature changes, thereby making the experimental data more accurate.

[0043] This device, through the cooperation of friction testing component 2, vacuum component 3, solenoid valve 4, and connecting component 5, creates a vacuum environment to simulate the bearing cage 6 under long-term use.

[0044] In actual use of the device,

[0045] ①A sealing strip 110 is added to the place where the cabinet door 11 contacts the box body 1 to ensure the airtightness of the box body 1 during the test;

[0046] ② During the test of bearing cage 6, if replacement is required, the bearing cage 6 on the connecting assembly can be moved to the front of cabinet door 11 by the cooperation of the horizontal electric guide rail 8 and the vertical electric guide rail 7, so that the test personnel can install, replace and test the sample.

[0047] ③ In actual use, in order to ensure that the operator can have a clearer grasp of the vacuum status inside the chamber 1, a vacuum gauge display 15 with a vacuum gauge detection probe 14 is added to the chamber 1, and a pressure sensor 16 and a pressure gauge 17 are added to the inner wall of the chamber 1.

[0048] As described above, the structure of the connecting component 5 includes:

[0049] The connecting rod 50 has its two ends slidably connected to the second slide groove 71 of the vertical electric guide rail 7 via the second moving block 53;

[0050] The motor 51 is disposed in the middle section of the connecting rod 50;

[0051] The mounting plate 54 has one end connected to the rotating shaft 52 of the motor 51, and the other end is provided with a fixing chuck 55, which is clamped and fixed to the bearing cage 6.

[0052] Working principle:

[0053] The fixed chuck 55 can be selected from the existing three-jaw chuck in actual use (the three-jaw chuck has strong clamping force, which can ensure that the workpiece is firmly clamped and not easy to slide or move. Clamping and releasing the bearing cage 6 can be completed by simply rotating the fixed chuck 55, which is simple and quick to operate). The fixed chuck 55 realizes the detachable clamping and fixing of the bearing cage 6. After the bearing cage 6 is installed, the connecting rod 50 is slidably connected to the second slide groove 71 by the second moving blocks 53 at both ends, and begins to move vertically under the drive of the vertical electric guide rail 7, so that the bearing cage 6 enters the vibration box 22 and makes full contact with the abrasive.

[0054] The motor 51 is started by an external power supply, which causes the rotating shaft 52 to drive the fixed chuck 55 and bearing cage 6 on the mounting plate 54 to start rotating in the abrasive at a certain speed for testing.

[0055] In the above scheme, a first slide groove 81 is provided on the horizontal electric guide rail 8, and the first moving block 72 of the vertical electric guide rail 7 is slidably connected to the first slide groove 81.

[0056] Working principle:

[0057] By activating the external power supply, the horizontal electric guide rail 8 drives the first moving block 72 of the vertical electric guide rail 7 to move horizontally within the first slide groove 81, so that the bearing cage 6 can move horizontally within the housing 1.

[0058] As described above, an observation window 13 is provided on the side of the housing 1, directly opposite the friction test component 2.

[0059] Working principle:

[0060] The observation window 13 facilitates the observation of the chamber 51. In actual use, the operator can directly see the pressure gauge 17 and air pressure sensor 16 installed in the chamber 1 through the observation window 13, read the air pressure in the chamber 1, and then know the vacuum level in the chamber 1 through the vacuum gauge display 14 and the vacuum gauge detection probe 14 until the vacuum pump 30 evacuates the chamber 1 to a vacuum environment.

[0061] As described above, a spring 23 is provided between the vibration box 22 and the bottom plate of the box 1. When the vibration box 22 is working, the spring 23 can provide support for the stable vibration of the vibration box 22, and at the same time can effectively absorb vibration energy and reduce the impact of vibration on the box 1.

[0062] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A bearing cage simulation test platform, comprising: A cabinet with doors; A friction testing assembly, which is mounted inside a vibratory chamber equipped with a vibration motor, is characterized in that it further comprises: A vacuum assembly is connected to the top of the chamber via a vacuum pump; a solenoid valve is connected to the pressure relief port of the chamber; a connecting assembly is detachably connected to a bearing cage via a motor's rotating shaft, and vertical electric guide rails are slidably connected to both ends of the connecting assembly; two sets of horizontal electric guide rails are installed on the inner wall of the chamber and are symmetrically arranged about the friction testing assembly, and the horizontal electric guide rails are slidably connected to the vertical electric guide rails.

2. The bearing cage simulation test platform according to claim 1, characterized in that, The connecting assembly includes: a connecting rod, both ends of which are slidably connected to the second slide groove of the vertical electric guide rail via second moving blocks; a motor, which is located in the middle section of the connecting rod; and a mounting plate, one end of which is connected to the rotating shaft of the motor, and the other end of which is provided with a fixing chuck, the fixing chuck being clamped and fixed with the bearing cage.

3. The bearing cage simulation test platform according to claim 1, characterized in that, The horizontal electric guide rail is provided with a first sliding groove, and the first moving block of the vertical electric guide rail is slidably connected to the first sliding groove.

4. The bearing cage simulation test platform according to claim 1, characterized in that, An observation window is provided on the side of the housing, directly opposite the friction testing component.

5. The bearing cage simulation test platform according to claim 1, characterized in that, A spring is installed between the vibration box and the bottom plate inside the box.

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