Bearing testing device

Abstract

The application discloses a bearing testing device, and relates to the technical field of bearing testing, wherein the bearing testing device comprises a test unit, a driving module, an oil supply module and a measuring module; the test unit is provided with a bearing pin shaft, and the bearing pin shaft is provided with a bearing section. The technical scheme provided by the application supplies oil between the bearing section and the bearing through the oil supply module, drives the bearing pin shaft to rotate by using the driving module, supplies oil to the bearing and drives the bearing to rotate, carries out oil quantity testing under different rotating speed conditions, and measures and monitors vibration, temperature, oil pressure and flow and the like when the bearing is subjected to oil quantity testing by the setting of the measuring module, so that the measurement result can be obtained while safety testing is carried out. The application can carry out oil quantity testing under different conditions by simulating the running condition of the bearing in the running process of the planetary row, can provide a reference for later engineering application, and has important value.

Description

Technical Field

[0001] This invention relates to the field of bearing testing technology, and in particular to a bearing testing device. Background Technology

[0002] Planetary gearboxes are the primary means of achieving multi-gear transmissions in hybrid gearboxes. In a planetary gearbox, needle roller bearings support the planetary gears and pins. These bearings must withstand both the radial load transmitted from the gears and the significant speed difference between the planetary gears and the pins, generating substantial heat during operation. Insufficient lubrication can lead to abnormal wear and even sintering. Currently, mainstream bearing suppliers rely primarily on experience to assess the lubrication volume of needle roller bearings, lacking quantitative testing of the actual oil flow through the bearing. Therefore, we propose a bearing testing device to address these issues. Summary of the Invention

[0003] The main objective of this invention is to provide a bearing testing device that enables quantitative testing of the oil content in bearings.

[0004] To achieve the above objectives, the bearing testing device proposed in this invention includes:

[0005] The test unit has a bearing pin, on which a bearing section is provided for mounting a bearing;

[0006] A drive module, located outside the test unit, is used to drive the bearing pin to rotate;

[0007] An oil supply module, wherein the oil supply module is used to supply oil between the bearing section and the bearing; and,

[0008] The measurement module is used to measure at least one of vibration, temperature, oil pressure, and flow rate.

[0009] In one embodiment, the test unit further includes a bearing support, and the bearing pin is rotatably mounted on the bearing support;

[0010] The drive module further includes a support portion, which includes a support base for connecting the bearing support. A support bearing is provided inside the bearing support, and a bushing is provided inside the support bearing for connecting the bearing pin.

[0011] In one embodiment, the drive module further includes a clamping part, which includes a collet and a collet nut. The collet is sleeved on the outer peripheral wall of the bearing pin, and the collet nut is connected to the collet for disassembling and connecting the pin.

[0012] In one embodiment, the bearing testing apparatus further includes a pressurization module for applying pressure to the bearing.

[0013] In one embodiment, the pressurization module includes a pressure plate, an electric cylinder, and a support.

[0014] The bracket is located outside the test unit, the electric cylinder is located above the bracket, and the pressure plate is connected to one end of the electric cylinder so that the pressure plate abuts against the outer peripheral wall of the bearing.

[0015] In one embodiment, the pressurization module further includes a collar fitted onto the bearing pin, forming a test space between the collar and the bearing pin for clamping the bearing.

[0016] In one embodiment, an oil inlet channel is formed inside the bearing pin, and one end of the oil inlet channel is connected to the outer wall of the bearing section;

[0017] The oil supply module includes:

[0018] Oil supply device; and,

[0019] The oil inlet circuit has one end connected to the oil inlet channel and the other end connected to the oil supply device.

[0020] In one embodiment, the oil supply module further includes:

[0021] An oil collection platform, corresponding to the bearing pin, is provided with an oil collection groove for collecting oil; and,

[0022] The return oil circuit connects to the oil collection tank at one end and to the oil supply device at the other end.

[0023] In one embodiment, the test unit further includes an oil inlet seal, which is disposed outside the bearing pin.

[0024] In one embodiment, the measurement module includes at least one of a temperature sensor and a temperature vibration sensor.

[0025] The technical solution of this invention employs a bearing mounted on the bearing pin to form a test unit. The oil supply module, the measurement module, and the drive module enable testing of the test unit. Specifically, the oil supply module supplies oil between the bearing section and the bearing, and the drive module drives the bearing pin to rotate, supplying oil to the bearing and causing it to rotate, thus conducting oil quantity tests under different speed conditions. Through the measurement module, vibration, temperature, oil pressure, and flow rate can be measured and monitored during the oil quantity test of the bearing, thereby obtaining measurement results while also conducting safety tests. This invention, by simulating the bearing's operation during planetary gear set operation, enables oil quantity tests under different conditions, achieving quantitative testing of the bearing and providing a reference for future engineering applications, thus possessing significant value. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of an embodiment of the bearing testing device provided by the present invention;

[0028] Figure 2 for Figure 1 Enlarged image;

[0029] Figure 3 This is a partial cross-sectional view of the test unit structure in the bearing testing device provided by the present invention.

[0030] Explanation of icon numbers:

[0031] 100. Bearing testing device; 1. Test unit; 11. Bearing pin; 111. Bearing section; 12. Bearing; 113. Oil inlet channel; 13. Bearing support; 14. Oil inlet seal; 2. Drive module; 21. Support part; 211. Support seat; 212. Support bearing; 213. Bushing; 22. Clamping part; 221. Collet; 222. Collet nut; 3. Oil supply module; 31. Oil supply device; 311. Oil pump motor; 32. Oil inlet circuit; 33. Oil collection platform; 331. Oil collection trough; 34. Oil return circuit; 4. Flow meter; 5. Pressurization module; 51. Pressurization plate; 52. Electric cylinder; 53. Bracket; 54. Ring; 6. Heating gun; 7. Filter.

[0032] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0035] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0036] Planetary gearboxes are the primary means of achieving multi-gear transmissions in hybrid gearboxes. In a planetary gearbox, needle roller bearings support the planetary gears and pins. These bearings must withstand both the radial load transmitted from the gears and the significant speed difference between the planetary gears and the pins, generating substantial heat during operation. Insufficient lubrication can lead to abnormal wear and even sintering. Currently, mainstream bearing suppliers rely primarily on experience to assess the lubrication volume of needle roller bearings, lacking quantitative testing of the actual oil flow through the bearing. Therefore, we propose a bearing testing device to address these issues.

[0037] This invention proposes a bearing testing device.

[0038] Please see Figures 1 to 3In one embodiment of the present invention, the bearing testing device includes a test unit 1, a drive module 2, an oil supply module 3, and a measurement module 4. The test unit 1 has a bearing pin 11, and the bearing pin 11 has a bearing section 111 on which a bearing 12 is fitted. The drive module 2 is located outside the test unit 1 and is used to drive the bearing pin 11 to rotate. The oil supply module 3 is used to supply oil between the bearing section 111 and the bearing 12. The measurement module 4 is used to measure at least one of vibration, temperature, oil pressure, and flow rate.

[0039] The technical solution of the present invention includes a test unit 1 with a bearing pin 11, a bearing section 111 on the bearing pin 11, and a bearing 12 fitted onto the bearing section 111. A drive module 2 is located outside the test unit 1 and drives the bearing pin 11 to rotate. An oil supply module 3 supplies oil between the bearing section 111 and the bearing 12. A measurement module 4 measures at least one of vibration, temperature, oil pressure, and flow rate. By using a bearing 12 on the bearing pin 11 to form the test unit 1, the oil supply module 3, the measurement module 4, and the drive module 2 can perform tests on the test unit 1. That is, the oil supply module 3 supplies oil between the bearing section 111 and the bearing 12, and the drive module 2 drives the bearing pin 11 to rotate to supply oil to the bearing 12. Oil quantity tests are conducted under different speed conditions. With the setting of the measurement module 4, vibration, temperature, oil pressure and flow rate can be measured and monitored when the bearing 12 is tested for oil quantity. Thus, while obtaining measurement results, safety tests can also be carried out. This invention, by using the oil supply module 3, drive module 2 and measurement module 4, simulates the operation of the bearing during the operation of the planetary gear set. Oil quantity tests can be carried out under different working conditions, providing a reference for later engineering applications and having important value.

[0040] It should be noted that, in the embodiments of the present invention, the bearing 12 includes a needle roller bearing.

[0041] In some embodiments, the drive module 2 can be configured as a high-speed motor or a regular motor. In order to obtain test results at different speeds, in the embodiments of the present invention, a high-speed motor is selected for use, which has a wider speed range and can maintain stable operation under different working conditions.

[0042] In the embodiments of the present invention, there are no specific restrictions on the configuration of the oil supply module 3, and the oil can be supplied by an oil supply pump.

[0043] In the embodiments of the present invention, there are no restrictions on the specific settings of the measurement module 4. It can be a vibration sensor for vibration monitoring, a temperature sensor for temperature monitoring, a flow meter for flow monitoring, or a pressure gauge for pressure monitoring. The specific setting position can be fixed according to the measurement needs.

[0044] Furthermore, in order to test the bearing 12, in the technical solution of the present invention, the test unit 1 further includes a bearing support 13, and the bearing pin 11 is rotatably mounted on the bearing support 13; the drive module 2 further includes a support part 21, the support part 21 includes a support seat 211 for connecting the bearing support 13, a support bearing 212 is provided in the bearing support 13, and a bushing 213 is provided inside the support bearing 212 for connecting the bearing pin 11; in this configuration, the support seat 211 provides a support platform for the test unit 1, and the bearing support 13, the support bearing 212, and the bushing 213 provide a support position for the bearing pin 11, thereby enabling the rotation of the bearing pin 11 and facilitating the use of the test.

[0045] Specifically, the bearing support 13 is fixedly installed on the support base 211, and the fixing method can be bolt connection. The outer ring of the support bearing 212 is fixed inside the bearing support 13. The outer peripheral wall of the bushing 213 is fixed to the inner ring of the support bearing 212. The bearing pin 11 is movably installed inside the bushing 213.

[0046] It should be added that the test unit 1 also includes a heating air gun 6, the bottom of which is fixed with a mounting base. The air outlet of the heating air gun 6 is opposite to the bearing 12 to provide ambient temperature and simulate the actual operating ambient temperature of the gearbox, thereby improving the accuracy of the test.

[0047] Furthermore, to facilitate the disassembly of the bearing pin 11, the drive module 2 in the technical solution of the present invention further includes a clamping part 22. The clamping part 22 includes a collet 221 and a collet nut 222. The collet 221 is sleeved on the outer peripheral wall of the bearing pin 11, and the collet nut 222 is connected to the collet 221 for disassembly and reassembly of the bearing pin 11. With this configuration, in the embodiment of the present invention, the bearing pin 11 can be disassembled through the collet 221 and the collet nut 222, which is beneficial for replacement and maintenance.

[0048] It should be added that the outer peripheral wall of the collet 221 is fixed to the inner wall of the bushing 213, the inner wall of the collet 221 is in contact with the outer peripheral wall of the bearing pin 11, the bearing pin 11 can move within the collet 221, and the collet nut 222 moves on the outer peripheral wall of the collet 221. The collet 221 and the bearing pin 11 can be detached by rotating the collet nut 222.

[0049] Specifically, by tightening the collet nut 222, the bearing pin 11 is tightened; if the collet nut 222 is rotated in the opposite direction, the bearing pin 11 becomes loose, which facilitates the disassembly of the bearing pin 11.

[0050] Furthermore, considering that the bearing testing device 100 needs to be tested under different working conditions, in the technical solution of the present invention, the bearing testing device 100 further includes a pressurizing module 5 for pressurizing the bearing 12; thus, the pressurizing module 5 can be used to load the bearing 12, thereby simulating the load conditions of the bearing 12. In conjunction with the drive module 2, the bearing 12 can be obtained under radial loading pressure and different speed conditions, and the minimum oil quantity of the bearing 12 under these conditions can be obtained by a step-reduction method.

[0051] In the implementation of this invention, there are no restrictions on the specific configuration of the pressurization module 5. It can be a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder. For specific configuration methods, please refer to the following detailed description.

[0052] Furthermore, in the technical solution of the present invention, the pressurizing module 5 includes a pressurizing plate 51, an electric cylinder 52, and a bracket 53; the bracket 53 is located outside the test unit 1, the electric cylinder 52 is located above the bracket 53, and one end of the pressurizing plate 51 is connected to the electric cylinder 52 so that the pressurizing plate 51 abuts against the outer peripheral wall of the bearing 12; in this configuration, the bracket 53 provides a support position for the electric cylinder 52, and the electric cylinder 52 drives the pressurizing plate 51 to be pushed in the radial direction, thereby abutting against the bearing 12 to achieve pressurization.

[0053] It should be noted that the pressurization module 5 also includes an external control box panel and sensors, which can set the parameters of the electric cylinder and adjust them through feedback from the sensors, thereby obtaining different loading forces of the electric cylinder 52 in the radial direction.

[0054] Furthermore, considering that the pressure may cause some damage to the bearing 12 when it is pressurized, in the technical solution of the present invention, the pressurizing module 5 also includes a collar 54, which is sleeved on the bearing pin 11 to protect the bearing 12 and forms a test space between the collar 54 and the bearing pin 11 to clamp the bearing 12. In this way, the test space can also be used to facilitate the draining of oil used for testing, thereby protecting the test environment and facilitating subsequent use.

[0055] In an embodiment of the present invention, the bearing ring 54 is a bearing ring.

[0056] It should be added that the test space is maintained between 0.3 and 0.5 mm, which can be used for oil drainage without affecting the testing of the bearing 12.

[0057] Furthermore, to facilitate oil supply to the bearing 12, in the technical solution of the present invention, an oil inlet channel 113 is formed inside the bearing pin 11, and one end of the oil inlet channel 113 is connected to the outer wall of the bearing section 111; the oil supply module 3 includes an oil supply device 31 and an oil inlet passage 32, wherein one end of the oil inlet passage 32 is connected to the oil inlet channel 113, and the other end is connected to the oil supply device 31; with this configuration, the oil supply device 31 can supply oil to the oil inlet passage 32, which is then transported to the oil inlet channel 113, and then the oil is transferred to the bearing 12 through the bearing section 111 for lubrication oil quantity testing.

[0058] In the embodiments of the present invention, the oil supply device 31 is not specifically limited. For example, the oil is transported by connecting the oil pump motor 311 to an external oil tank.

[0059] Furthermore, in order to achieve oil recycling during testing, the oil supply module 3 in this invention further includes an oil collection platform 33 and an oil return path 34. The oil collection platform 33 is configured corresponding to the bearing pin 11 and forms an oil collection groove 331 for collecting oil. One end of the oil return path 34 is connected to the oil collection groove 331, and the other end is connected to the oil supply device 31. With this configuration, the oil discharged from the bearing 12 can be collected by the oil collection platform 33, and the discharged oil can be returned to the oil collection platform 33 by the oil return path 34 for recycling.

[0060] It should be noted that the oil collection platform 33 can be connected to the oil supply device 31, that is, the collected drained oil is transported to the external oil tank through the return oil line 34 via the oil collection tank 331 for use.

[0061] Considering that the purity of the oil may be affected when the oil is used in the cyclic test, which in turn affects the use of the bearing testing device 100, in the embodiment of the present invention, a filter 7 can also be provided to filter the oil and improve the service life of the bearing testing device 100.

[0062] Of course, the filter 7 of the present invention can be installed on the oil inlet passage 32 or on the oil return passage 34, and can be installed at any location that can filter the oil.

[0063] It should be added that a flow meter 8 is also provided on the oil inlet circuit 32. The speed of the oil pump motor 311 can be adjusted according to the value of the flow meter 8, thereby realizing the constant flow circulation oil supply function in the bearing testing device 100.

[0064] In addition, in order to achieve a sealing effect for the oil, the test unit 1 in the technical solution of the present invention further includes an oil inlet seal 14, which is disposed outside the bearing pin 11; thus, by providing the oil inlet seal 14, the sealing effect of the oil during transportation can be guaranteed.

[0065] Specifically, in an embodiment of the present invention, the oil inlet seal 14 is fixedly installed on the outer peripheral wall of the bearing pin 11, and the oil inlet seal 14 is installed close to the oil inlet passage 32 to achieve a sealing effect at the oil inlet.

[0066] Furthermore, in order to provide a good testing environment, in the technical solution of the present invention, the measurement module 4 includes at least one of a temperature sensor and a temperature-vibration sensor; the temperature sensor can measure temperature data in real time and upload the data to the host computer of the peripheral device; the temperature-vibration sensor can measure temperature and vibration and upload the data to the host computer of the peripheral device, thereby achieving the measurement and monitoring of the test process.

[0067] Based on the actual operating conditions of gearbox applications, this invention selects three PV levels for testing during actual testing using the bearing testing device 100: 3350, 5000, and 7500 MPa.m / s. Based on these three PV levels, the PV values ​​are converted into suitable radial loads and the rotational speed of the bearing pin 11 during the actual test. An example of the test conditions is shown in the table below.

[0068]

[0069]

[0070] Based on the test conditions specified in the table above, the minimum oil volume under different conditions can be collected to provide a reference for obtaining the lubricating oil volume of the bearing 12 in the future.

[0071] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A bearing testing device, characterized in that, include: The test unit has a bearing pin, on which a bearing section is provided for mounting a bearing; A drive module, located outside the test unit, is used to drive the bearing pin to rotate; An oil supply module is provided for supplying oil between the bearing section and the bearing. as well as, A measurement module for measuring at least one of vibration, temperature, oil pressure, and flow rate; The bearing testing device also includes a pressurization module for applying pressure to the bearing; The pressurization module also includes a collar, which is fitted onto the bearing pin and forms a test space with the bearing pin for clamping the bearing; An oil inlet channel is formed inside the bearing pin, and one end of the oil inlet channel is connected to the outer wall of the bearing section. The oil supply module includes: Oil supply device; and, An oil inlet circuit, one end of which is connected to the oil inlet channel, and the other end of which is connected to the oil supply device; The oil supply module also includes: An oil collection platform, corresponding to the bearing pin, is provided with an oil collection groove for collecting oil; and, The return oil circuit is connected to the oil collection tank at one end and to the oil supply device at the other end. The ring is a bearing ring; The test space is maintained between 0.3 and 0.5 mm; The test unit also includes a bearing support, and the bearing pin is rotatably mounted on the bearing support; The drive module further includes a support part, which includes a support seat for connecting the bearing support. A support bearing is provided inside the bearing support, and a bushing is provided inside the support bearing for connecting the bearing pin. The drive module also includes a clamping part, which includes a collet and a collet nut. The collet is sleeved on the outer peripheral wall of the bearing pin, and the collet nut is connected to the collet for disassembly and reassembly of the pin. The test unit also includes an oil inlet seal, which is disposed outside the bearing pin. The bearings include needle roller bearings.

2. The bearing testing device as described in claim 1, characterized in that, The pressurization module includes a pressure plate, an electric cylinder, and a support frame; The bracket is located outside the test unit, the electric cylinder is located above the bracket, and the pressure plate is connected to one end of the electric cylinder so that the pressure plate abuts against the outer peripheral wall of the bearing.

3. The bearing testing device as described in claim 1, characterized in that, The measurement module includes at least one of a temperature sensor and a temperature vibration sensor.

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