CN116242608A - Bearing test device - Google Patents
Bearing test device Download PDFInfo
- Publication number
- CN116242608A CN116242608A CN202310362866.6A CN202310362866A CN116242608A CN 116242608 A CN116242608 A CN 116242608A CN 202310362866 A CN202310362866 A CN 202310362866A CN 116242608 A CN116242608 A CN 116242608A
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- shaft
- driving shaft
- bearing
- motor
- bevel gear
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention belongs to the technical field of aviation bearing detection, and discloses a bearing test device. One end of the central transmission shaft is in transmission connection with the first driving shaft through a first transmission structure, and the driving motor is used for driving the first driving shaft to rotate, so that the driving motor drives the central transmission shaft to rotate at a high speed through the first driving shaft; the other end of the central transmission shaft is in transmission connection with the second driving shaft through the second transmission structure, and a load is applied to the second driving shaft by using the loading motor, at the moment, if the rotating speed of the driving motor applied to the central transmission shaft is the rotating speed in actual working, and the torque load of the loading motor applied to the central transmission shaft is controlled to be the torque load in actual working, the rotating speed and the load born by a test bearing arranged on the central transmission shaft in the test process are the same as the rotating speed and the load born by the test bearing in actual working, and the performance, the service life and the reliability of the bearing can be reasonably evaluated and checked.
Description
Technical Field
The invention relates to the technical field of aviation bearing detection, in particular to a bearing test device.
Background
In order to ensure proper operation of the aircraft and engine, there are many accessories that require some power, speed and steering that are required to be carried over by the engine, such as lubricating pumps, fuel pumps, hydraulic pumps, generators, etc. Accessories requiring engine rotation are mounted on accessory gearboxes with a series of intermeshing gears within the gearboxes, the engine driving the gearboxes through bevel gears, a central drive shaft assembly, which in turn transfer power to all accessories mounted thereon. The combination of these accessories, gear trains and drive shafts is known as an accessory drive.
The joint of the accessory transmission device and the engine rotor is a central transmission gear shaft, a bearing for supporting the central transmission gear shaft is the bearing with the highest rotating speed in the accessory transmission bearing, the rotating speed is close to the rotating speed of the engine gas generator rotor, and the reliability and the service life of the bearing influence the working performance of the whole accessory transmission device. The central transmission shaft bearing is mostly vertically arranged on the central transmission shaft by adopting a diagonal brace, and the stress condition is complex, such as bearing radial load, axial load and bending moment load of a bevel gear. Therefore, the test verification of a tester is generally required to be completed before the existing bearing is installed on an engine to carry out a complete machine test, and aiming at the bearing of a central transmission shaft, the existing test scheme is that the test bearing is installed on a horizontal shaft, and loads generated by meshing of bevel gears on the bearing are simulated in a mode that radial loads are loaded by radial cylinders and axial loads are loaded by the axial cylinders respectively.
However, in the mode of loading radial load through the radial oil cylinder and loading axial load through the axial oil cylinder respectively, because the test device does not simulate bending moment load applied by the bevel gear, the test device is difficult to simulate the real installation condition of the bearing, the rotation speed and load measured by the bearing in the test process are inaccurate, the verification link of the bearing test is insufficient, and the evaluation results of the performance, service life and reliability of the bearing are unreasonable.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is that in the prior art, because the test device does not simulate the bending moment load applied by the bevel gear, the test device is difficult to simulate the real installation condition of the bearing, and the evaluation results of the performance, the service life and the reliability of the bearing are relatively unreasonable.
To this end, the present invention provides a bearing test apparatus comprising:
the testing mechanism comprises a shell body, a first loading inlet and a second loading inlet which are respectively arranged at two sides of the shell body, a central transmission shaft, a first driving shaft and a second driving shaft are arranged in the shell body, the central transmission shaft is rotatably arranged in the shell body, a test bearing and a test accompanying bearing are respectively arranged at two ends of the central transmission shaft, one end of the central transmission shaft is in transmission connection with the first driving shaft through a first transmission structure so that the rotation of the first driving shaft can drive the rotation of the central transmission shaft, the first driving shaft penetrates out of the first loading inlet, the other end of the central transmission shaft is in transmission connection with the second driving shaft through a second transmission structure so that the rotation of the central transmission shaft can drive the rotation of the second driving shaft, and the second driving shaft penetrates out of the second loading inlet;
the motor shaft of the driving motor is in transmission connection with one end of the first driving shaft penetrating out of the first loading inlet;
and a motor shaft of the loading motor is in transmission connection with one end of the second driving shaft penetrating out of the second loading inlet.
Alternatively, the bearing test apparatus described above,
the first transmission structure comprises a first bevel gear and a second bevel gear, the first bevel gear is fixedly arranged at one end of the central transmission shaft, and the second bevel gear is fixedly arranged at one end of the first driving shaft far away from the driving motor.
Alternatively, the bearing test apparatus described above,
the second transmission structure comprises a third bevel gear and a fourth bevel gear, the third bevel gear is fixedly arranged at the other end of the central transmission shaft, and the fourth bevel gear is fixedly arranged at one end, far away from the loading motor, of the second driving shaft.
Alternatively, the bearing test apparatus described above,
the motor is characterized by further comprising a speed increaser, wherein the input end of the speed increaser is in transmission connection with a motor shaft of the driving motor through a coupler, and the output end of the speed increaser is in transmission connection with one end, far away from the first bevel gear, of the first driving shaft through the coupler.
Alternatively, the bearing test apparatus described above,
the speed reducer is characterized by further comprising a speed reducer, wherein the input end of the speed reducer is in transmission connection with a motor shaft of the loading motor through a coupler, and the output end of the speed reducer is in transmission connection with one end, far away from the second bevel gear, of the second driving shaft through the coupler.
Alternatively, the bearing test apparatus described above,
the speed detecting device also comprises a speed detecting piece, wherein the speed detecting piece is arranged between the testing mechanism and the speed reducer.
Alternatively, the bearing test apparatus described above,
the rotating speed detection part is a torque sensor, the input end of the torque sensor is connected with the output end of the speed reducer through a coupler, and the output end of the torque sensor is in transmission connection with one end, far away from the second bevel gear, of the second driving shaft through the coupler.
Alternatively, the bearing test apparatus described above,
the test platform is also included;
the shell body is arranged above the test platform.
Alternatively, the bearing test apparatus described above,
still include the mount pad, the mount pad sets up along the direction of height the test platform with between the casing body.
Alternatively, the bearing test apparatus described above,
the second loading inlet is arranged above the first loading inlet along the height direction;
the test bearing is disposed proximate the first loading inlet.
The technical scheme provided by the invention has the following advantages:
the invention provides a bearing test device which comprises a test mechanism, a driving motor and a loading motor. The testing mechanism comprises a shell body, a first loading inlet and a second loading inlet which are respectively arranged at two sides of the shell body, wherein a central transmission shaft, a first driving shaft and a second driving shaft are arranged in the shell body, the central transmission shaft is rotatably arranged in the shell body, a test bearing and a test accompanying bearing are respectively arranged at two ends of the central transmission shaft, one end of the central transmission shaft is in transmission connection with the first driving shaft through a first transmission structure so that the rotation of the first driving shaft can drive the rotation of the central transmission shaft, the first driving shaft penetrates out of the first loading inlet, the other end of the central transmission shaft is in transmission connection with the second driving shaft through a second transmission structure so that the rotation of the central transmission shaft can drive the rotation of the second driving shaft, and the second driving shaft penetrates out of the second loading inlet; a motor shaft of the driving motor is in transmission connection with one end of the first driving shaft penetrating out of the first loading inlet; and a motor shaft of the loading motor is in transmission connection with one end of the second driving shaft penetrating out of the second loading inlet.
According to the bearing test device with the structure, one end of the central transmission shaft is in transmission connection with the first driving shaft through the first transmission structure, and the driving motor is used for driving the first driving shaft to rotate, so that the driving motor drives the central transmission shaft to rotate at a high speed through the first driving shaft; the other end of the central transmission shaft is in transmission connection with the second driving shaft through the second transmission structure, and a load is applied to the second driving shaft by using the loading motor, at the moment, if the rotating speed of the driving motor applied to the central transmission shaft is the rotating speed in actual working, and the torque load of the loading motor applied to the central transmission shaft is controlled to be the torque load in actual working, the rotating speed and the load born by a test bearing arranged on the central transmission shaft in the test process are the same as the rotating speed and the load born by the test bearing in actual working, and the performance, the service life and the reliability of the bearing can be reasonably evaluated and checked.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a bearing test apparatus according to the present invention;
FIG. 2 is a schematic structural diagram of a test mechanism in the bearing test apparatus provided by the present invention;
reference numerals illustrate:
1-a testing mechanism; 111-a housing body; 112-a first load inlet; 113-a second load inlet; 114-a central drive shaft; 115-a first drive shaft; 116-a second drive shaft; 117-test bearings; 118-accompany the test bearing;
2-a first transmission structure; 211-a first bevel gear; 212-a second bevel gear;
3-a second transmission structure; 311-third bevel gear; 312-fourth bevel gear;
4-driving a motor;
5-loading a motor;
61-speed increaser; 62-speed reducer;
7-coupling;
8-a rotation speed detecting member;
91-a test platform; 92-mount.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
The present embodiment provides a bearing test apparatus, as shown in fig. 1 and 2, including a test mechanism 1, a drive motor 4, and a loading motor 5. The testing mechanism 1 comprises a shell body 111, and a first loading inlet 112 and a second loading inlet 113 which are respectively arranged at two sides of the shell body 111, wherein a central transmission shaft 114, a first driving shaft 115 and a second driving shaft 116 are arranged in the shell body 111, the central transmission shaft 114 is rotatably arranged in the shell body 111, a test bearing 117 and a test accompanying bearing 118 are respectively arranged at two ends of the central transmission shaft 114, one end of the central transmission shaft 114 is in transmission connection with the first driving shaft 115 through a first transmission structure 2 so that the rotation of the first driving shaft 115 can drive the rotation of the central transmission shaft 114, the first driving shaft 115 penetrates through the first loading inlet 112, the other end of the central transmission shaft 114 is in transmission connection with the second driving shaft 116 through a second transmission structure 3 so that the rotation of the central transmission shaft 114 can drive the rotation of the second driving shaft 116, and the second driving shaft 116 penetrates through the second loading inlet 113; the motor shaft of the driving motor 4 is in transmission connection with one end of the first driving shaft 115 penetrating out of the first loading inlet 112; the motor shaft of the loading motor 5 is in transmission connection with one end of the second driving shaft 116 penetrating out of the second loading inlet 113.
In the bearing test device with the structure, one end of the central transmission shaft 114 is in transmission connection with the first driving shaft 115 through the first transmission structure 2, and the driving motor 4 is used for driving the first driving shaft 115 to rotate, so that the driving motor 4 drives the central transmission shaft 114 to rotate at a high speed through the first driving shaft 115; the other end of the central transmission shaft 114 is in transmission connection with the second driving shaft 116 through the second transmission structure 3, and a load is applied to the second driving shaft 116 by using the loading motor 5, at this time, if the rotation speed of the driving motor 4 applied to the central transmission shaft 114 is the rotation speed in actual working, and the torque load of the loading motor 5 applied to the central transmission shaft 114 is controlled to be the torque load in actual working, the rotation speed and load born by the test bearing 117 mounted on the central transmission shaft 114 in the test process are the same as the rotation speed and load born by the test bearing in actual working, and further, the performance, the service life and the reliability of the bearing can be reasonably evaluated and checked.
It may be noted that, the bearing test device provided in this embodiment may simulate different working conditions inside the housing body 111, such as the installation mode, the environmental condition, the lubrication mode, etc. of the bearing are consistent with the working conditions when actually applied to the engine, so as to further reasonably evaluate and examine the performance, the service life, and the reliability of the bearing.
It should be noted that, in the bearing test apparatus provided in this embodiment, the power and the rotation speed of the first driving shaft 115 are transmitted to the central driving shaft 114 through the first transmission structure 2, and finally, the power and the rotation speed are transmitted to the second driving shaft 116 through the second transmission structure 3.
It should be noted that the housing body 111 provided in this embodiment is made in a cast form.
As shown in fig. 1 and 2, the bearing test apparatus provided in this embodiment includes a first bevel gear 211 and a second bevel gear 212, wherein the first bevel gear 211 is fixedly disposed at one end of the central transmission shaft 114, and the second bevel gear 212 is fixedly disposed at one end of the first driving shaft 115 away from the driving motor 4.
As shown in fig. 1 and 2, in the bearing test apparatus provided in this embodiment, the second transmission structure 3 includes a third bevel gear 311 and a fourth bevel gear 312, the third bevel gear 311 is fixedly disposed at the other end of the central transmission shaft 114, and the fourth bevel gear 312 is fixedly disposed at the end of the second driving shaft 116 away from the loading motor 5.
It may be noted that, in the bearing test apparatus provided in this embodiment, the loading motor 5 needs to load the whole bearing test apparatus, at this time, when the loading motor 5 is selected to be an ac variable frequency motor as one of the embodiments, the magnitude of the loading torque is controlled by controlling the output power of the loading motor 5, and the torque load applied to the bevel gear disposed on the central transmission shaft 114 when the engine accessory actually works is simulated, so that the load applied to the test bearing 117 is the same as the load applied to the actual working.
As shown in fig. 1 and 2, in the bearing test apparatus provided in the present embodiment, the second loading inlet 113 is disposed above the first loading inlet 112 in the height direction; the test bearing 117 is now disposed adjacent to the first loading inlet 112.
As shown in fig. 1, the bearing test device provided in this embodiment further includes a speed increaser 61, an input end of the speed increaser 61 is in transmission connection with a motor shaft of the driving motor 4 through a coupling 7, and an output end of the speed increaser 61 is in transmission connection with one end of the first driving shaft 115, which is far from the first bevel gear 211, through the coupling 7. In the present embodiment, by the arrangement of the speed increaser 61, it is possible to increase the output rotation speed of the drive motor 4 to a high rotation speed that can be borne by the test bearing 117, and to transmit the power and torque of the drive motor 4 to the center drive shaft 114.
As shown in fig. 1, the bearing test device provided in this embodiment further includes a speed reducer 62, an input end of the speed reducer 62 is in transmission connection with a motor shaft of the loading motor 5 through a coupling 7, and an output end of the speed reducer 62 is in transmission connection with one end, far away from the second bevel gear 212, of the second driving shaft 116 through the coupling 7.
As shown in fig. 1, the bearing test apparatus provided in this embodiment further includes a rotation speed detecting member 8, and the rotation speed detecting member 8 is disposed between the test mechanism 1 and the speed reducer 62. In the present embodiment, the rotation speed detecting member 8 is used for detecting the rotation speed and the loading torque transmitted from the central transmission shaft 114 to the second driving shaft 116, and the speed reducer 62 is provided between the rotation speed detecting member 8 and the loading motor 5 for reducing the rotation speed transmitted from the central transmission shaft 114 to the rotation speed of the motor shaft of the loading motor 5.
As one of the embodiments, the bearing test apparatus provided in this example is selected as a torque sensor in selecting the rotation speed detecting member 8. The input end of the torque sensor is connected with the output end of the speed reducer 62 through the coupling 7, and the output end of the torque sensor is in transmission connection with one end, far away from the second bevel gear 212, of the second driving shaft 116 through the coupling 7.
In the above embodiment, five couplings 7 are provided in total, and each of them is: the shaft coupling 7 arranged between the motor shaft of the driving motor 4 and the input end of the speed increaser 61, and the shaft coupling 7 arranged between the input end of the speed reducer 62 and the motor shaft of the loading motor 5 are all selected as lamination shaft couplings; the coupling 7 provided between the output end of the speed increaser 61 and the first drive shaft 115, the coupling 7 provided between the input end of the torque sensor and the output end of the speed reducer 62, and the coupling 7 provided between the output end of the torque sensor and the second drive shaft 116 are all selected as high-speed film disc couplings.
In this embodiment, the driving motor 4 is an ac variable frequency motor during the type selection, so that closed-loop control can be realized and driving force can be provided for the whole bearing test device.
As shown in fig. 1 and 2, the bearing test apparatus provided in this embodiment further includes a test platform 91; the housing body 111 is now mounted above the test platform 91.
It should be noted that, because there is a possibility that there is an inconsistency in the coaxiality and the center height between the components, the mounting base 92 should be further included in the present embodiment. At this time, a plurality of mounting seats 92 are provided, and as one embodiment, 6 mounting seats 92 are provided in total, wherein one mounting seat 92 is provided between the test platform 91 and the housing body 111 in the height direction, and the remaining five mounting seats 92 are provided between the drive motor 4 and the test platform 91, between the speed increaser 61 and the test platform 91, between the rotation speed detecting member 8 and the test platform 91, between the speed reducer 62 and the test platform 91, and between the loading motor 5 and the test platform 91, respectively. Meanwhile, the structure of each mounting seat 92 is not limited, and the coaxiality and the center height of each component are ensured to be consistent after the mounting seat 92 is fixedly mounted.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (10)
1. A bearing testing apparatus, comprising:
the testing mechanism (1), the testing mechanism (1) comprises a shell body (111) and a first loading inlet (112) and a second loading inlet (113) which are respectively arranged at two sides of the shell body (111), a central transmission shaft (114), a first driving shaft (115) and a second driving shaft (116) are arranged in the shell body (111), the central transmission shaft (114) is rotatably arranged in the shell body (111), test bearings (117) and accompanying test bearings (118) are respectively arranged at two ends of the central transmission shaft (114), one end of the central transmission shaft (114) is in transmission connection with the first driving shaft (115) through a first transmission structure (2), so that the rotation of the first driving shaft (115) can drive the rotation of the central transmission shaft (114), the first driving shaft (115) penetrates out of the first loading inlet (112), and the other end of the central transmission shaft (114) is in transmission connection with the second driving shaft (116) through a second transmission structure (3), so that the rotation of the central transmission shaft (114) can drive the second driving shaft (116) to rotate, and the second driving shaft (116) is provided out of the loading inlet (116);
the motor shaft of the driving motor (4) is in transmission connection with one end of the first driving shaft (115) penetrating out of the first loading inlet (112);
and a motor shaft of the loading motor (5) is in transmission connection with one end of the second driving shaft (116) penetrating out of the second loading inlet (113).
2. A bearing test apparatus according to claim 1, wherein,
the first transmission structure (2) comprises a first bevel gear (211) and a second bevel gear (212), the first bevel gear (211) is fixedly arranged at one end of the central transmission shaft (114), and the second bevel gear (212) is fixedly arranged at one end, far away from the driving motor (4), of the first driving shaft (115).
3. A bearing test apparatus according to claim 1, wherein,
the second transmission structure (3) comprises a third bevel gear (311) and a fourth bevel gear (312), the third bevel gear (311) is fixedly arranged at the other end of the central transmission shaft (114), and the fourth bevel gear (312) is fixedly arranged at one end, far away from the loading motor (5), of the second driving shaft (116).
4. A bearing test apparatus according to claim 2, wherein,
the motor is characterized by further comprising a speed increaser (61), wherein the input end of the speed increaser (61) is in transmission connection with a motor shaft of the driving motor (4) through a coupler (7), and the output end of the speed increaser (61) is in transmission connection with one end, far away from the first bevel gear (211), of the first driving shaft (115) through the coupler (7).
5. A bearing test apparatus according to claim 2, wherein,
the automatic loading device is characterized by further comprising a speed reducer (62), wherein the input end of the speed reducer (62) is in transmission connection with a motor shaft of the loading motor (5) through a coupler (7), and the output end of the speed reducer (62) is in transmission connection with one end, far away from the second bevel gear (212), of the second driving shaft (116) through the coupler (7).
6. The bearing test apparatus according to claim 5, wherein,
the device also comprises a rotating speed detection piece (8), wherein the rotating speed detection piece (8) is arranged between the testing mechanism (1) and the speed reducer (62).
7. The bearing test apparatus according to claim 6, wherein,
the rotating speed detection part (8) is a torque sensor, the input end of the torque sensor is connected with the output end of the speed reducer (62) through the coupler (7), and the output end of the torque sensor is in transmission connection with one end, far away from the second bevel gear (212), of the second driving shaft (116) through the coupler (7).
8. A bearing test apparatus according to any one of claim 1 to 3,
also comprises a test platform (91);
the housing body (111) is mounted above the test platform (91).
9. The bearing test apparatus of claim 8, wherein,
the test bench further comprises a mounting seat (92), and the mounting seat (92) is arranged between the test bench (91) and the shell body (111) along the height direction.
10. A bearing test apparatus according to any one of claim 1 to 3,
the second loading inlet (113) is arranged above the first loading inlet (112) along the height direction;
the test bearing (117) is arranged close to the first loading inlet (112).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310362866.6A CN116242608A (en) | 2023-04-04 | 2023-04-04 | Bearing test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310362866.6A CN116242608A (en) | 2023-04-04 | 2023-04-04 | Bearing test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116242608A true CN116242608A (en) | 2023-06-09 |
Family
ID=86629704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310362866.6A Pending CN116242608A (en) | 2023-04-04 | 2023-04-04 | Bearing test device |
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| CN (1) | CN116242608A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117471314A (en) * | 2023-12-21 | 2024-01-30 | 四川化工职业技术学院 | Load rotating speed testing system and method for new energy automobile |
-
2023
- 2023-04-04 CN CN202310362866.6A patent/CN116242608A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117471314A (en) * | 2023-12-21 | 2024-01-30 | 四川化工职业技术学院 | Load rotating speed testing system and method for new energy automobile |
| CN117471314B (en) * | 2023-12-21 | 2024-02-27 | 四川化工职业技术学院 | Load rotating speed testing system and method for new energy automobile |
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