A test method for the effect of torque fluctuations on gear meshing vibrations

Abstract

A test method for the influence of torque fluctuation on gear transmission beat vibration relates to a gear transmission beat vibration research method, and aims at exploring the influence of torque fluctuation on gear transmission beat vibration of double-machine parallel operation. The load testing machine is used as the load end of the gear transmission, so as to provide the load torque fluctuation of the gear transmission; the first servo motor is used as an input end of the gear transmission, so as to provide the input torque fluctuation frequency of the gear transmission; the second servo motor is used as another input end of the gear transmission, so as to provide the input torque fluctuation amplitude of the gear transmission; and then, whether the gear transmission produces the beat vibration phenomenon is tested. The beneficial effect is that the influence relationship of torque fluctuation of different double-machine parallel operation gear transmission systems on the beat vibration phenomenon is efficiently explored, and the purpose of exploring the influence of torque fluctuation on gear transmission beat vibration of double-machine parallel operation is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of gear transmission device beat vibration research method. BACKGROUND

[0002] Double-machine parallel operation gear transmission device is used to integrate the output power of two power sources and transmit to the propulsion shaft to improve the output power of propulsion system;Due to the existence of gear transmission device gear side clearance, in the process of running parallel operation, the gear pair of the driven end to be parallel operation will be knocked repeatedly in the gear side clearance in the process of being converted from negative engagement to positive engagement, serious noise and vibration will be produced;Gear transmission device beat vibration will aggravate gear fatigue wear, prone to crack, broken teeth and other faults, and even cause the damage of power system, seriously threaten the safety and reliability of system;The beat vibration of double-machine parallel operation gear transmission system is greatly influenced by the torque fluctuation factors of the driven end to be parallel operation and load end, and the influence of torque fluctuation on beat vibration can be obtained through test verification, which provides effective technical support for reducing the influence of beat vibration;In order to explore the influence of torque fluctuation on the beat vibration of double-machine parallel operation gear transmission device, there is no test scheme that can effectively reproduce the actual beat vibration phenomenon, so as to verify the influence of torque fluctuation on beat vibration, and further to give the solution to avoid the beat vibration problem in torque fluctuation. SUMMARY

[0003] The purpose of the present application is to explore the influence of torque fluctuation on the beat vibration of double-machine parallel operation gear transmission device, and a test method for the influence of torque fluctuation on the beat vibration of gear transmission device is proposed.

[0004] The test method for the influence of torque fluctuation on the beat vibration of gear transmission device comprises the following steps:

[0005] A load dynamometer is used as the load end of the gear transmission device to provide load torque fluctuation for the gear transmission device, a first servo motor is used as an input end of the gear transmission device to provide input end torque fluctuation frequency for the gear transmission device, and a second servo motor is used as another input end of the gear transmission device to provide input end torque fluctuation amplitude for the gear transmission device, so as to test whether the gear transmission device produces beat vibration phenomenon;

[0006] The first servo motor is controlled by outputting speed signal through a first motor controller;The second servo motor is controlled by outputting torque signal through a second motor controller;The load dynamometer is controlled by outputting torque signal through a dynamometer controller.

[0007] Further, four groups of speed-up tests are carried out on the gear transmission device:

[0008] The first set of experiments: With the input of the first servo motor unchanged, the output torque of the second servo motor is adjusted by the controller of the second motor. Different amplitudes of fluctuations with the same frequency are added to the fixed torque to carry out dynamic experiments of the gear transmission system under different input torque fluctuation amplitudes.

[0009] The second set of experiments: With the input of the first servo motor unchanged, the output torque of the second servo motor was adjusted by the controller of the second motor. Different frequencies of fluctuation with the same amplitude were added to the fixed torque to carry out dynamic experiments of the gear transmission system under different input torque fluctuation frequencies.

[0010] The third group of experiments: The load torque of the load dynamometer was adjusted by the dynamometer controller, and the load torque was set to fluctuate with different amplitudes but the same frequency. Dynamic tests of the gear transmission system were carried out under different load torque fluctuation amplitudes.

[0011] The fourth group of experiments: The load torque of the load dynamometer was adjusted by using the dynamometer controller, and the load torque was set to fluctuate at different frequencies but with the same amplitude. Dynamic tests of the gear transmission system were carried out under different load torque fluctuation frequencies.

[0012] Furthermore, the torque signal output by the No. 2 motor controller is a sinusoidal control signal.

[0013] Furthermore, the torque signal output by the dynamometer controller is a sinusoidal control signal.

[0014] The beneficial effects of this invention are as follows: In the experimental method for investigating the influence of torque fluctuations on the tooth vibration of a dual-machine parallel gear transmission device, as the frequency and amplitude of torque fluctuations at the input and load ends change, the corresponding speed range in which tooth vibration occurs in the dual-machine parallel gear transmission system will change significantly, and the peak-to-peak value of the impact vibration acceleration caused by the tooth vibration will also change significantly. Based on this experimental method, the influence relationship between torque fluctuations in different dual-machine parallel gear transmission systems and the tooth vibration phenomenon can be efficiently investigated, thus achieving the purpose of investigating the influence of torque fluctuations on the tooth vibration of a dual-machine parallel gear transmission device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a dual-machine parallel-running gear transmission device, which is the subject of an experimental method for testing the influence of torque fluctuation on the vibration of gear teeth in a gear transmission device, as described in Specific Implementation Method 1. Detailed Implementation

[0016] Specific implementation method one: Combining Figure 1 This embodiment describes a test method for assessing the effect of torque fluctuation on the vibration of gear teeth in a gear transmission device. The test method is as follows:

[0017] The load dynamometer 6 is used as the load end of the gear transmission device 5 to provide load torque fluctuation for the gear transmission device 5. The first servo motor 3 is used as one input end of the gear transmission device 5 to provide input torque fluctuation frequency for the gear transmission device 5. At the same time, the second servo motor 4 is used as the other input end of the gear transmission device 5 to provide input torque fluctuation amplitude for the gear transmission device 5. In this way, the test is conducted to determine whether the gear transmission device 5 produces tooth-slapping vibration.

[0018] Among them, servo motor 3 is controlled by outputting a speed signal through motor controller 1; servo motor 4 is controlled by outputting a torque signal through motor controller 2; and load dynamometer 6 is controlled by outputting a torque signal through dynamometer controller 7.

[0019] In the test method described in this embodiment, the control mode of the first servo motor 3 is the speed control mode, and the control mode of the second servo motor 4 is the torque control mode; the second motor controller 2 generates a torque sinusoidal fluctuation control signal, which enables the second drive servo motor 4 to output sinusoidal fluctuation torque; the dynamometer controller 7 generates a torque sinusoidal fluctuation control signal, which enables the load dynamometer 6 to output sinusoidal fluctuation torque.

[0020] Torque fluctuation is divided into input torque fluctuation of load dynamometer 6 and load torque fluctuation of load dynamometer 6. In the experimental method, in order to determine the influence of input torque fluctuation of load dynamometer 6 on the vibration of the paddle teeth, the influence of the amplitude of input torque fluctuation of load dynamometer 6 on the vibration of the paddle teeth and the influence of the frequency of input torque fluctuation of load dynamometer 6 on the vibration of the paddle teeth will be studied.

[0021] In the preferred embodiment, four sets of speed-up tests are conducted on the gear transmission device 5:

[0022] The first set of experiments: With the input of servo motor 3 unchanged, the output torque of servo motor 4 is adjusted by controller 2 of motor 4. Different amplitudes of fluctuations with the same frequency are added to the fixed torque to carry out dynamic experiments of gear transmission system under different input torque fluctuation amplitudes.

[0023] The second set of experiments: With the input of servo motor 3 unchanged, the output torque of servo motor 4 is adjusted by controller 2 of motor 4. Different frequency fluctuations of the same amplitude are added to the fixed torque to carry out dynamic experiments of gear transmission system under different input torque fluctuation frequencies.

[0024] The third group of experiments: The load torque of the load dynamometer 6 is adjusted by the dynamometer controller 7, and the load torque is set to have different amplitudes and the same frequency of fluctuation. The dynamics test of the gear transmission system under different load torque fluctuation amplitudes is carried out.

[0025] The fourth group of experiments: The load torque of the load dynamometer 6 is adjusted by the dynamometer controller 7, and the load torque is set to have different frequencies and the same amplitude fluctuations. Dynamic tests of the gear transmission system under different load torque fluctuation frequencies are carried out.

[0026] In a preferred embodiment, the torque signal output by the second motor controller 2 is a sine wave control signal.

[0027] In a preferred embodiment, the torque signal output by the dynamometer controller 7 is a sine wave control signal.

[0028] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A test method for the influence of torque fluctuation on the vibration of gear teeth in a gear transmission device, characterized in that, The experimental method is as follows: Using a load dynamometer (6) as the load end of the gear transmission device (5), a load torque fluctuation is provided to the gear transmission device (5). Using a servo motor (3) as one input end of the gear transmission device (5), an input torque fluctuation frequency is provided to the gear transmission device (5). At the same time, using a servo motor (4) as the other input end of the gear transmission device (5), an input torque fluctuation amplitude is provided to the gear transmission device (5). Thus, the test is conducted to determine whether the gear transmission device (5) produces a tooth-slapping vibration phenomenon. Among them, the No. 1 servo motor (3) is controlled by the No. 1 motor controller (1) outputting a speed signal; the No. 2 servo motor (4) is controlled by the No. 2 motor controller (2) outputting a torque signal; and the load dynamometer (6) is controlled by the load dynamometer controller (7) outputting a torque signal.

2. The test method for the influence of torque fluctuation on the vibration of gear teeth in a gear transmission device according to claim 1, characterized in that, Four sets of speed-up tests were conducted on the gear transmission device (5): First group of experiments: With the input of the No. 1 servo motor (3) unchanged, the output torque of the No. 2 servo motor (4) is adjusted by the No. 2 motor controller (2). Different amplitudes of the same frequency fluctuations are added to the fixed torque to carry out dynamic experiments of the gear transmission system under different input torque fluctuation amplitudes. The second group of experiments: With the input of the first servo motor (3) unchanged, the output torque of the second servo motor (4) is adjusted by the second motor controller (2). Different frequency fluctuations with the same amplitude are added to the fixed torque to carry out dynamic experiments of the gear transmission system under different input torque fluctuation frequencies. The third group of experiments: The load torque of the load dynamometer (6) was adjusted by the dynamometer controller (7), and the load torque was set to have different amplitudes and the same frequency of fluctuation. The dynamics test of the gear transmission system under different load torque fluctuation amplitudes was carried out. The fourth group of experiments: The load torque of the load dynamometer (6) was adjusted by the dynamometer controller (7), and the load torque was set to have different frequencies and the same amplitude fluctuations. The dynamics of the gear transmission system under different load torque fluctuation frequencies were carried out.

3. The test method for the influence of torque fluctuation on the vibration of gear teeth in a gear transmission device according to claim 1, characterized in that, The torque signal output by the No. 2 motor controller (2) is a sine wave control signal.

4. The test method for the influence of torque fluctuation on the vibration of gear teeth in a gear transmission device according to claim 1, characterized in that, The torque signal output by the dynamometer controller (7) is a sine wave control signal.

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