CN113049248A - Impact endurance test system and method for new energy reducer - Google Patents
Impact endurance test system and method for new energy reducer Download PDFInfo
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- CN113049248A CN113049248A CN202110449499.4A CN202110449499A CN113049248A CN 113049248 A CN113049248 A CN 113049248A CN 202110449499 A CN202110449499 A CN 202110449499A CN 113049248 A CN113049248 A CN 113049248A
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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
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
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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
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/027—Test-benches with force-applying means, e.g. loading of drive shafts along several directions
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
Abstract
The invention discloses a new energy reducer impact endurance test system and a new energy reducer impact endurance test method, wherein a driving motor in the test system is connected with an input shaft of a gear box; an output shaft of the gear box is connected with an input shaft of the new energy reducer to be detected through a coupler, a torque and rotating speed sensor I and a connecting disc I; the output of the two sides of the new energy reducer to be tested is sequentially connected with a half shaft, a connecting disc, a torque and rotating speed sensor II, a coupler, a shaft on a bearing seat and a braking device; the output ends of the braking device and all the torque and rotating speed sensors are connected with a computer through a data acquisition unit; the computer is connected with the driving motor through the motor controller to control the driving motor to work in a required state, and brake impact is simulated through the braking device. The method can flexibly and conveniently simulate different test working conditions of the new energy reducer impact endurance test, so that impact endurance test data under different working conditions can be quickly, accurately and inexpensively obtained.
Description
Technical Field
The invention relates to a new energy reducer performance test system in an automobile power system, in particular to a new energy reducer impact endurance test system and a new energy reducer impact endurance test method, and belongs to the technical field of automobile tests.
Background
With the development of new energy automobiles, new energy reducers have been widely used in new energy automobiles due to the advantages of simple structure, low cost, high transmission efficiency and the like. The new energy reducer is an important component of a whole vehicle transmission system and can be formed by single-stage or two-stage gear transmission, and the two gear transmissions are integrated with a differential mechanism. The speed reducer reduces the speed and increases the torque by changing the transmission ratio of the whole vehicle, and improves the dynamic property of the vehicle. The integrated differential can perform differential to wheels, and improves the driving performance and the control performance of the automobile. However, when the motor is started and the vehicle is braked, a gear transmission system in the reducer generates obvious torque impact, so that an impact endurance experiment is often required to be performed on a newly developed new energy reducer to evaluate the reliability of the new energy reducer, weak parts of the new energy reducer are found, early failure of the new energy reducer is exposed, the design is changed in time, and the development risk is reduced.
At present, a finished automobile test is the only method for the impact endurance test of the new energy reducer, and the method has the defects of long finished automobile preparation time, long test period, high cost, poor consistency of test working conditions and the like. Therefore, how to perform an experiment on the impact durability of the new energy reducer on the rack is expected to become a new path for solving the problem of the insufficient test of the whole vehicle, but no relevant report exists at home and abroad at present. Therefore, a new energy reducer impact endurance test system needs to be designed urgently, various impact endurance tests of the new energy reducer under a finished automobile working condition test can be accurately simulated, and the system has important significance for shortening the development period of the new energy reducer.
Disclosure of Invention
Aiming at the defect that the impact endurance performance of the new energy reducer is detected by adopting a whole vehicle test in the prior art, the invention aims to provide the impact endurance test system of the new energy reducer.
The technical scheme of the invention is realized as follows:
the utility model provides a new forms of energy reduction gear impact endurance test system which characterized in that: the brake device comprises a base, wherein a driving motor, a gear box, an inertia disc box, a new energy reducer mounting base frame and a brake device are arranged on the base; an output shaft of the driving motor is connected with one end of an input shaft of the gear box through a transmission mechanism, and the other end of the input shaft of the gear box is connected with the inertia disc box through a coupler I;
the new energy reducer mounting base frame is used for mounting a new energy reducer to be tested; an output shaft of the gearbox is connected with an extension shaft on one side of a torque and rotation speed sensor I through a coupler II, and an extension shaft on the other side of the torque and rotation speed sensor I is connected with an input shaft of the new energy reducer to be detected through a connecting disc I; the rotation axes of the torque rotating speed sensor I, the output shaft of the gear box and the input shaft of the new energy reducer to be tested are positioned on the same horizontal line;
the braking device comprises a left braking device and a right braking device, and the left braking device and the right braking device are symmetrically arranged on two sides of the new energy reducer mounting base frame; a left torque rotating speed sensor II and a left half shaft are arranged between the left braking device and the new energy speed reducer mounting base frame, one end of the left half shaft is used for being connected with a left half shaft output hole of the new energy speed reducer to be tested, and the other end of the left half shaft is connected with an extending shaft on one side of the left torque rotating speed sensor II through a left connecting disc II; the other side of the left torque rotating speed sensor II is provided with a projecting shaft which is connected with one end of a projecting shaft on a left bearing seat through a left coupling III; the other end of the extending shaft on the left bearing seat is rigidly fixed with a brake disc on the left brake device;
a right torque rotating speed sensor II and a right half shaft are arranged between the right braking device and the new energy reducer mounting base frame, one end of the right half shaft is used for being connected with a right half shaft output hole of the new energy reducer to be tested, and the other end of the right half shaft is connected with an extending shaft on one side of the right torque rotating speed sensor II through a right connecting disc II; the right torque and rotating speed sensor II is fixed on the base, and an extension shaft on the other side of the right torque and rotating speed sensor II is connected with one end of an extension shaft on a right bearing seat through a right coupler III; the other end of the extending shaft on the right bearing seat is rigidly fixed with a brake disc on the right brake device;
the output ends of the left braking device, the right braking device, the torque and rotating speed sensor I, the left torque and rotating speed sensor II and the right torque and rotating speed sensor II are connected with a data acquisition unit, the output end of the data acquisition unit is connected with a computer, and the computer displays and records related data; the computer is connected with the driving motor through the motor controller so as to control the driving motor to work in a required state.
The transmission mechanism is a belt transmission mechanism consisting of two belt wheels and a belt, and an output shaft of the driving motor is rigidly connected with one of the belt wheels through a key; the other belt wheel is rigidly connected with the input shaft of the gear box through a key; the two belt wheels are connected by a belt in a transmission way.
The driving motor is rigidly fixed on the base through the motor base, the driving motor is fixed on the motor base, and the motor base is rigidly fixed on the base; the gear box is rigidly fixed on the base through a gear box seat; the gear box is fixed on the gear box seat, and the gear box seat is rigidly fixed on the base.
The axes of the half shaft hole, the left half shaft and the right half shaft of the new energy reducer to be tested simulate the arrangement of the installation state of the new energy reducer to be tested on the real vehicle; the rotation axes of the left torque and rotation speed sensor II, the left bearing seat and the left braking device are positioned on the same horizontal line; and the rotation axes of the right torque and rotation speed sensor II, the right bearing seat and the right braking device are positioned on the same horizontal line.
The invention also provides a new energy reducer impact endurance test method.
A new energy reducer impact endurance test method is carried out according to the following steps,
1) firstly, obtaining the new energy reducer impact endurance test system;
2) installing a new energy reducer to be tested; mounting the new energy speed reducer to be tested on the new energy speed reducer mounting base frame, correspondingly connecting two half shaft output holes of the new energy speed reducer to be tested with a left half shaft and a right half shaft, and connecting an input shaft of the new energy speed reducer to be tested with an extending shaft at the other side of the torque and speed sensor I through a connecting disc I;
3) simulating the impact operation condition of the new energy reducer; the computer realizes communication interaction with the motor controller in a communication interface mode, a special control algorithm for a test process is operated on the computer to simulate the running working condition of the vehicle, the motor controller controls the driving motor to run under the corresponding working condition, including the starting working condition and the running working condition, and the braking pressure is input by the braking device under various working conditions to simulate the braking impact during the braking of the real vehicle, so that the new energy reducer simulates various impact working conditions on the whole vehicle;
4) collecting data; in the simulation process, the rotating speed and the torque of the input shaft and the left and right half shafts of the new energy reducer are sensed by corresponding torque rotating speed sensors and converted into electric signals to be input into a data collector in real time, the brake device converts the brake pressure into the electric signals to be input into the data collector in real time, the data collector realizes data transmission with a computer in a communication interface mode, the rotating speed and the torque signals of the input shaft and the left and right half shafts of the new energy reducer and the brake pressure signals of the brake device are transmitted into the computer in real time, and the computer displays and records the data so as to monitor the input and output conditions of the new energy reducer.
Compared with the prior art, the invention has the following beneficial effects:
1. the test system is simple and convenient to install and adjust, and the installation and connection mode of the new energy reducer in the test system is completely consistent with that of the corresponding real vehicle, so that the feasibility of the test system is ensured;
2. the test system can simultaneously measure the torque and the rotation speed of the input shaft and the half shaft of the new energy reducer, can monitor the torque and rotation speed data of the motor and the half shaft under the experimental working condition in real time, and provides data support for the accuracy of the experiment;
3. the test system simulates the real vehicle emergency braking working condition by using the information interaction control of the braking device and the computer, not only can generate large impact torque, but also can obtain more accurate experimental data;
4. the test system is controlled by a computer, and flexibly sets the test working conditions according to actual conditions, so that different test working conditions of the new energy reducer impact endurance test can be conveniently simulated.
Drawings
FIG. 1 is a structural diagram of an impact endurance test system of a new energy reducer according to the present invention;
FIG. 2 is a schematic diagram of a new energy reducer impact endurance test system according to the present invention;
in the figure: 1, a belt; 2, driving a motor; 3-a gear box; 4, a coupler I; 5-inertia disc box; 6, a base; 7, mounting a base frame on the new energy reducer; 8-connecting disc I; 9-torque speed sensor I; 10-a coupler II; 11-a motor controller; 12-a right braking device; 13-a computer; 14-data collector; 15-the new energy reducer to be tested; 16-left half shaft; 17-left connecting disc II; 18-left torque and rotation speed sensor II; 19-left coupling iii; 20-left bearing seat; 21-left brake device.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The structure of the test measuring device is shown in figure 1: the device comprises a belt 1, a driving motor 2, a gear box 3, a coupler I4, an inertia disc box 5, a base 6, a new energy reducer mounting base frame 7, a connecting disc I8, a torque and rotation speed sensor I9, a coupler II 10, a motor controller 11, a right braking device 12, a computer 13, a data collector 14, a new energy reducer to be tested 15, a left half shaft 16, a left connecting disc II 17, a left torque and rotation speed sensor II 18, a left coupler III 19, a left bearing seat 20 and a left braking device 21.
Driving motor 2 passes through the bolt rigid fixation on motor base, motor base rigid fixation is on base 6, driving motor 2's output shaft passes through key and band pulley rigid connection, then constitute belt drive through belt 1 and another band pulley, another band pulley passes through key and gear box 3's input shaft one end rigid connection, gear box 3 passes through the bolt rigid fixation on the gear box seat, gear box seat rigid fixation is on base 6, gear box 3's the input shaft other end passes through shaft coupling I4 and is connected with inertia dish case 5. The gear box is a 1:1 gear box. Inertia of the inertia disc box 5 can be adjusted according to the equivalent inertia of the real vehicle, and the simulation of the mass of the whole vehicle is realized by installing different inertia discs.
The new energy speed reducer mounting base frame 7 is rigidly fixed on the base 6 through bolts, the new energy speed reducer 15 to be tested is rigidly fixed on the new energy speed reducer mounting base frame 7 through bolts, and an input shaft of the new energy speed reducer 15 to be tested is inserted into an internal spline hole in one side of the connecting disc I8 through spline teeth to realize rigid connection; the inner splined hole on the other side of the connecting disc I8 is in rigid connection with an extending shaft on one side of a torque and speed sensor I9 through a key, the torque and speed sensor I9 is rigidly fixed on a sensor base through a bolt, the sensor base is rigidly fixed on a bottom plate of a new energy speed reducer mounting base frame 7 through the bolt, and the extending shaft on the other side of the torque and speed sensor I9 is connected with an output shaft of the gear box 3 through a coupler II 10.
The left braking device and the right braking device are symmetrically arranged on two sides of the new energy reducer mounting base frame.
One end of the left half shaft 16 is inserted into an output hole of the left half shaft of the new energy speed reducer 15 to be tested through spline teeth, the other end of the left half shaft 16 is inserted into an internal spline hole in one side of the left connecting disc II 17 through the spline teeth, and the left half shaft and the right half shaft are rigidly connected; the other side of the left connecting disc II 17 is rigidly connected with an extending shaft at one side of a left torque and rotating speed sensor II 18 through a key, the left torque and rotating speed sensor II 18 is rigidly fixed on a left sensor base through a bolt, and the left sensor base is rigidly fixed on the base 6 through a bolt. An extending shaft on the other side of the left torque rotating speed sensor II 18 is connected with one end of an extending shaft on a left bearing seat 20 through a left coupling III 19, the other end of the extending shaft on the left bearing seat 20 is rigidly connected with a brake disc on a left braking device 21, and the left braking device 21 brakes the brake disc through a brake caliper on the left braking device, so that the braking of the corresponding shaft is realized. The left bearing seat shell and the left braking device shell are integrally and rigidly fixed on the base 6 through bolts.
Correspondingly, one end of the right half shaft is inserted into the output hole of the right half shaft of the new energy speed reducer to be detected through spline teeth, the other end of the right half shaft is inserted into the internal spline hole in one side of the right connecting disc II through the spline teeth, and the right half shaft and the internal spline hole are in rigid connection; the other side of the right connecting disc II is rigidly connected with an extending shaft on one side of a right torque rotating speed sensor II through a key, the right torque rotating speed sensor II is rigidly fixed on a right sensor base through a bolt, and the right sensor base is rigidly fixed on a base through a bolt. And an extension shaft on the other side of the right torque and rotation speed sensor II is connected with one end of an extension shaft on a right bearing seat through a right coupling III, the other end of the extension shaft on the right bearing seat is rigidly connected with a brake disc on a right braking device 12, and the right braking device 12 brakes the brake disc through a brake caliper on the right braking device, so that the braking of the corresponding shaft is realized. The right bearing seat shell and the right braking device shell are integrally and rigidly fixed on the base 6 through bolts.
The axes of the half shaft hole, the left half shaft and the right half shaft of the new energy reducer to be tested simulate the arrangement of the installation state of the new energy reducer to be tested on the real vehicle; the rotation axes of the left torque and rotation speed sensor II, the left bearing seat and the left braking device are positioned on the same horizontal line; and the rotation axes of the right torque and rotation speed sensor II, the right bearing seat and the right braking device are positioned on the same horizontal line.
The output ends of the left braking device 21, the right braking device 12, the torque and rotating speed sensor I9, the left torque and rotating speed sensor II 18 and the right torque and rotating speed sensor II are connected with the data acquisition unit 14, the output end of the data acquisition unit 14 is connected with the computer 13, and the computer displays and records related data; the computer 13 is connected with the driving motor 2 through the motor controller 11 to control the driving motor 2 to work in a required state.
The motor controller 11 and the computer 13 realize the interaction of motor control commands in a communication mode, the computer 13 controls the motor 2 to work through the motor controller 11, and the computer 13 controls the driving motor 2 to simulate the test working conditions such as high-speed starting of the whole new energy reducer; if a motor control command is sent to the motor controller, the motor controller controls the motor to reach a target state by setting instructions such as starting and braking of working conditions required by the test. When the target rotating speed is reached, the computer 13 controls the left and right braking devices 21 and 12 to simulate the emergency braking working condition of the new energy reducer; in the test process, a torque and rotation speed sensor I9 and a left and right torque and rotation speed sensor II continuously measure torque and rotation speed signals on an input shaft and left and right half shafts of the new energy reducer in real time and brake pressure signals of a brake device, the signals are transmitted to a data collector 14 in real time, the signals processed by the data collector 14 are input into a computer 13, the computer 13 displays and records data of the input shaft, the left and right half shafts and the brake device of the new energy reducer, and the brake time and the brake pressure of the brake device are controlled. The system principle of the present invention is shown in fig. 2.
The test system can test different models of new energy reducers, and the test purpose can be achieved only by processing different models of new energy reducer mounting and positioning connecting holes on the new energy reducer mounting base frame 7.
Particularly, the output ends on the two sides of the new energy reducer are arranged completely the same, so that the components arranged on the two output ends are completely the same.
The base 6 is formed by machining metal iron and is installed on the ground in the form of a foundation. The stability of the base is guaranteed due to the fact that the metal iron is processed, all parts are firm and reliable after being installed on the base, vibration does not exist, and cost is not too high; meanwhile, the base is installed in a foundation mode and is almost flush with the ground, and installation and follow-up detection of all parts are facilitated.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all the modifications or equivalent substitutions should be covered by the claims of the present invention.
Claims (7)
1. The utility model provides a new forms of energy reduction gear impact endurance test system which characterized in that: the brake device comprises a base, wherein a driving motor, a gear box, an inertia disc box, a new energy reducer mounting base frame and a brake device are arranged on the base; an output shaft of the driving motor is connected with one end of an input shaft of the gear box through a transmission mechanism, and the other end of the input shaft of the gear box is connected with the inertia disc box through a coupler I;
the new energy reducer mounting base frame is used for mounting a new energy reducer to be tested; an output shaft of the gearbox is connected with an extension shaft on one side of a torque and rotation speed sensor I through a coupler II, and an extension shaft on the other side of the torque and rotation speed sensor I is connected with an input shaft of the new energy reducer to be detected through a connecting disc I; the rotation axes of the torque rotating speed sensor I, the output shaft of the gear box and the input shaft of the new energy reducer to be tested are positioned on the same horizontal line;
the braking device comprises a left braking device and a right braking device, and the left braking device and the right braking device are symmetrically arranged on two sides of the new energy reducer mounting base frame; a left torque rotating speed sensor II and a left half shaft are arranged between the left braking device and the new energy speed reducer mounting base frame, one end of the left half shaft is used for being connected with a left half shaft output hole of the new energy speed reducer to be tested, and the other end of the left half shaft is connected with an extending shaft on one side of the left torque rotating speed sensor II through a left connecting disc II; the other side of the left torque rotating speed sensor II is provided with a projecting shaft which is connected with one end of a projecting shaft on a left bearing seat through a left coupling III; the other end of the extending shaft on the left bearing seat is rigidly fixed with a brake disc on the left brake device;
a right torque rotating speed sensor II and a right half shaft are arranged between the right braking device and the new energy reducer mounting base frame, one end of the right half shaft is used for being connected with a right half shaft output hole of the new energy reducer to be tested, and the other end of the right half shaft is connected with an extending shaft on one side of the right torque rotating speed sensor II through a right connecting disc II; the right torque and rotating speed sensor II is fixed on the base, and an extension shaft on the other side of the right torque and rotating speed sensor II is connected with one end of an extension shaft on a right bearing seat through a right coupler III; the other end of the extending shaft on the right bearing seat is rigidly fixed with a brake disc on the right brake device;
the output ends of the left braking device, the right braking device, the torque and rotating speed sensor I, the left torque and rotating speed sensor II and the right torque and rotating speed sensor II are connected with a data acquisition unit, the output end of the data acquisition unit is connected with a computer, and the computer displays and records related data; the computer is connected with the driving motor through the motor controller so as to control the driving motor to work in a required state.
2. The impact endurance testing system of the new energy source speed reducer according to claim 1, wherein: the transmission mechanism is a belt transmission mechanism consisting of two belt wheels and a belt, and an output shaft of the driving motor is rigidly connected with one of the belt wheels through a key; the other belt wheel is rigidly connected with the input shaft of the gear box through a key; the two belt wheels are connected by a belt in a transmission way.
3. The impact endurance testing system of the new energy source speed reducer according to claim 1, wherein: the base is formed by processing metal iron and is installed on the ground in the form of a foundation.
4. The impact endurance testing system of the new energy source speed reducer according to claim 1, wherein: the gear box is a 1:1 gear box.
5. The impact endurance testing system of the new energy source speed reducer according to claim 1, wherein: the driving motor is rigidly fixed on the base through the motor base, the driving motor is fixed on the motor base, and the motor base is rigidly fixed on the base; the gear box is rigidly fixed on the base through a gear box seat; the gear box is fixed on the gear box seat, and the gear box seat is rigidly fixed on the base.
6. The impact endurance testing system of the new energy source speed reducer according to claim 1, wherein: the axes of the half shaft hole, the left half shaft and the right half shaft of the new energy reducer to be tested simulate the arrangement of the installation state of the new energy reducer to be tested on the real vehicle; the rotation axes of the left torque and rotation speed sensor II, the left bearing seat and the left braking device are positioned on the same horizontal line; and the rotation axes of the right torque and rotation speed sensor II, the right bearing seat and the right braking device are positioned on the same horizontal line.
7. A new energy reducer impact endurance test method is characterized by comprising the following steps: the method comprises the following steps of,
1) firstly, obtaining a new energy source speed reducer impact endurance test system according to any one of claims 1 to 6;
2) installing a new energy reducer to be tested; mounting the new energy speed reducer to be tested on the new energy speed reducer mounting base frame, correspondingly connecting two half shaft output holes of the new energy speed reducer to be tested with a left half shaft and a right half shaft, and connecting an input shaft of the new energy speed reducer to be tested with an extending shaft at the other side of the torque and speed sensor I through a connecting disc I;
3) simulating the impact operation condition of the new energy reducer; the computer realizes communication interaction with the motor controller in a communication interface mode, a special control algorithm for a test process is operated on the computer to simulate the running working condition of the vehicle, the motor controller controls the driving motor to run under the corresponding working condition, including the starting working condition and the running working condition, and the braking pressure is input by the braking device under various working conditions to simulate the braking impact during the braking of the real vehicle, so that the new energy reducer simulates various impact working conditions on the whole vehicle;
4) collecting data; in the simulation process, the rotating speed and the torque of the input shaft and the left and right half shafts of the new energy reducer are sensed by corresponding torque rotating speed sensors and converted into electric signals to be input into a data collector in real time, the brake device converts the brake pressure into the electric signals to be input into the data collector in real time, the data collector realizes data transmission with a computer in a communication interface mode, the rotating speed and the torque signals of the input shaft and the left and right half shafts of the new energy reducer and the brake pressure signals of the brake device are transmitted into the computer in real time, and the computer displays and records the data so as to monitor the input and output conditions of the new energy reducer.
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| CN202110449499.4A CN113049248A (en) | 2021-04-25 | 2021-04-25 | Impact endurance test system and method for new energy reducer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899561A (en) * | 2021-08-18 | 2022-01-07 | 北京信息科技大学 | Impact working condition simulation device and method for confluence planetary gear system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109827770A (en) * | 2019-03-20 | 2019-05-31 | 重庆理工大学 | One kind being suitable for automobile gearbox gear shock loading test device and method |
| CN112393869A (en) * | 2020-04-20 | 2021-02-23 | 襄阳达安汽车检测中心有限公司 | Impact test device and method for passenger vehicle gearbox |
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2021
- 2021-04-25 CN CN202110449499.4A patent/CN113049248A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827770A (en) * | 2019-03-20 | 2019-05-31 | 重庆理工大学 | One kind being suitable for automobile gearbox gear shock loading test device and method |
| CN112393869A (en) * | 2020-04-20 | 2021-02-23 | 襄阳达安汽车检测中心有限公司 | Impact test device and method for passenger vehicle gearbox |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113899561A (en) * | 2021-08-18 | 2022-01-07 | 北京信息科技大学 | Impact working condition simulation device and method for confluence planetary gear system |
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