CN214584023U - Gear vibration noise test bench - Google Patents
Gear vibration noise test bench Download PDFInfo
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- CN214584023U CN214584023U CN202023185242.2U CN202023185242U CN214584023U CN 214584023 U CN214584023 U CN 214584023U CN 202023185242 U CN202023185242 U CN 202023185242U CN 214584023 U CN214584023 U CN 214584023U
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Abstract
An object of the utility model is to provide a gear vibration noise test bench, including DC motor, the step-up gear box, transmission gear box, experimental gear box, the moment of torsion loader, DC motor passes through the elasticity pin shaft coupling and links to each other with the step-up gear box low-speed axle, the step-up gear box high-speed axle passes through the diaphragm shaft coupling and links to each other with transmission gear box low-speed end, transmission gear box high-speed end one side links to each other with the barring machine through the diaphragm shaft coupling, transmission gear box high-speed end opposite side connection transmission shaft, the transmission shaft passes through the experimental gear box low-speed axle of diaphragm shaft coupling connection, the transmission shaft passes through the sliding bearing seat and supports, the torsion tester is connected to transmission gear box low-speed end, the moment of torsion loader is connected to the torsion tester, the moment of torsion loader passes through the diaphragm shaft coupling and links to each other with the torsion shaft, the torsion shaft passes through the spline adapter sleeve and links to each other with experimental gear box low-speed axle. The utility model discloses a to test gear box vibration, noise and pass the test of transmission error, can revise the simulation calculation model.
Description
Technical Field
The utility model relates to a vibration noise test platform, specifically speaking are gear vibration noise test platform.
Background
The gear transmission is an important transmission form for transmitting power, and plays an important role in the fields of automobiles, ships, aerospace, aviation and the like. With the development of science and technology and the improvement of use requirements, the transmission power of the gear is gradually increased, the operation rotating speed is gradually increased, and the requirements on the vibration and the noise of the gear are also higher and higher. The gear vibration and noise are important indexes for evaluating the gear transmission performance, and the research aiming at the gear vibration and noise can provide technical support for the design and manufacture of high-performance gears. Aiming at the characteristics of the high-speed and heavy-load use environment of the ship gear, the conventional gear transmission test bed is mainly an open test bed, the test capability of the open test bed is mainly limited by a loading device, and the high-speed and heavy-load test requirements of the ship gear are difficult to meet. Therefore, the mechanical power closed test bed is designed to complete the test research of high-speed and heavy-duty gears. Through the structural design of the test bed, the design of a test gear box and the design of a test method, the test bed can analyze the influence of factors such as gear precision, gear basic parameters, helical gears, herringbone gears and the like on the gear transmission performance under the condition of unchanging center distance, and can realize the development of multiple factor verification tests on one test bed.
The transmission error is one of the reasons of gear vibration, and the control of the transmission error can effectively reduce the gear vibration noise. Through testing the vibration, noise and transmission error of the test gearbox, the transmission performance of the gear can be compared at multiple angles, so that reference is provided for gear design.
Disclosure of Invention
An object of the utility model is to provide a gear vibration noise test bench that provides the basis for gear drive low noise design.
The purpose of the utility model is realized like this:
the utility model relates to a gear vibration noise test bench, characterized by: including direct current motor, the step-up gear box, the transmission gear box, experimental gear box, the moment of torsion loader, direct current motor passes through the elastic pin shaft coupling and links to each other with the step-up gear box low-speed axle, the step-up gear box high-speed axle passes through the diaphragm coupling and links to each other with the transmission gear box low-speed end, transmission gear box high-speed end one side links to each other with the barring machine through the diaphragm coupling, transmission gear box high-speed end opposite side connection transmission shaft, the transmission shaft passes through diaphragm coupling connection experimental gear box low-speed axle, the transmission shaft passes through the slip bearing frame and supports, the torque meter is connected to transmission gear box low-speed end, the torque loader is connected to the torque loader through the diaphragm coupling, the torque axle links to each other with experimental gear box low-speed axle through the spline adapter sleeve.
The utility model discloses can also include:
1. the direct current motor, the speed-up gear box, the transmission gear box, the test gear box, the torque loader and the sliding bearing seat are all installed on a support, the support is fixedly connected with a test room foundation, the direct current motor, the speed-up gear box, the transmission gear box, the torque loader, the torsion shaft, the transmission shaft, the sliding bearing seat, the torque meter, the turning gear, the elastic pin coupling, the diaphragm coupling and the support are placed in a sound insulation cover, and connecting gaps among the sound insulation cover, the torsion shaft and the transmission shaft are filled with foam materials.
2. When the jigger is used as a power source, namely under the jigger working condition, the high-speed shaft of the transmission gearbox is used as a driving shaft, and the low-speed shaft and the transmission shaft of the transmission gearbox are respectively driven to form power sealing; when the direct current motor is used as a power source, namely under the working condition of the motor, the direct current motor promotes the rotating speed through the speed-up gearbox so as to drive the low-speed shaft of the transmission gearbox, the low-speed shaft is a driving shaft to drive the high-speed shaft and the torsion shaft, the high-speed shaft of the transmission gearbox drives the high-speed shaft of the test gearbox through the driving shaft, and the torsion shaft drives the low-speed shaft of the test gearbox, so that power sealing is realized.
The utility model has the advantages that: the utility model discloses a to test gear box vibration, noise and pass the test of transmission error, can revise the simulation calculation model, through the calibration and the correction to the model, obtain more accurate calculation model. Through simulation analysis and test of the test gearbox, the research on the influence of factors such as gear basic parameters and gear precision on vibration noise can be developed. The test bench is used for carrying out transmission error test, gear box vibration test, gear box air noise test, gear box sound source identification test and the like, and the test result is compared with the calculation model for correction, so that the calculation model has certain accuracy and the test method has certain universality.
Drawings
FIG. 1 is a schematic diagram of the structural arrangement of the test bed of the present invention;
FIG. 2 is a front view of the test bed of the present invention;
FIG. 3 is a top view of the test bed of the present invention;
FIG. 4 is a schematic diagram of a test gearbox;
FIG. 5 is a schematic view of an angular encoder installation.
Detailed Description
The invention will be described in more detail below by way of example with reference to the accompanying drawings:
with reference to fig. 1-5, the present invention is a mechanical power closed test bed, wherein a motor drives a power closed system to operate, and a loader in the system can realize dynamic and static loading; and designing a test system, and testing vibration, noise, transmission errors and the like to monitor the test state and evaluate the transmission performance.
The test bench comprises operation system and test system, and the operation system has: the device comprises a direct current motor 1, a speed-up gear box 2, a transmission gear box 3, a test gear box 4, a torque loader 5, a torsion shaft 6, a transmission shaft 7, a sliding bearing seat 8, a torque meter 9, a jigger 10, an elastic pin coupling 11, a diaphragm coupling 12, a support 13, a sound insulation cover 14, an angle encoder 15, an acceleration sensor 16, an acoustic array instrument 17, a thermometer 18, a flowmeter 19, a photoelectric rotating speed sensor 20, a data acquisition and analysis system 21 and the like. Direct current motor 1 links to each other with 2 low-speed axles of increasing gear box through elasticity pin shaft coupling 11, 2 high-speed axles of increasing gear box link to each other with 3 low-speed ends of drive gear box through diaphragm coupling 12, 3 high-speed ends of drive gear box one side links to each other with car turning machine 10 through diaphragm coupling 12, 3 high-speed ends opposite side connection transmission shaft 7 of drive gear box, transmission shaft 7 passes through diaphragm coupling 12 and connects 4 low-speed axles of experimental gear box, transmission shaft 7 is supported by two sliding bearing seats 8, 3 low-speed ends of drive gear box connect and test the wrench machine 9, torque loader 5 is connected to torque loader 9, torque loader 5 passes through diaphragm coupling 12 and links to each other with torsion shaft 6, torsion shaft 6 links to each other with 4 low-speed axles of experimental gear box through the spline adapter sleeve. Direct current motor 1, increasing gear 2, transmission gear 3, test gear box 4, moment of torsion loader 5, sliding bearing seat 8 all install respectively on support 13, and support 13 links firmly with the laboratory ground, and each gear box, loader, bearing frame etc. are by the unified supply lubricating oil of test bench. In order to carry out a noise test of a test gear box 4, a direct current motor 1, a speed-up gear box 2, a transmission gear box 3, a torque loader 5, a torsion shaft 6, a transmission shaft 7, a sliding bearing seat 8, a torque measuring instrument 9, a rolling machine 10, an elastic pin coupling 11, a diaphragm coupling 12, a support 13 and the like are placed in a sound insulation cover 14, connecting gaps among the sound insulation cover 14, the torsion shaft 6, the transmission shaft 7 and other pipelines are loose and porous through foams and the like, and the sound insulation cover is filled with materials with certain sound absorption performance, so that noise and vibration isolation is achieved to the maximum extent. The testing system comprises a photoelectric rotating speed sensor 20, a torque meter 9, a thermometer 18, a flowmeter 19, an angle encoder 15, an acceleration sensor 16, an acoustic array instrument 17, a data acquisition and analysis system 21 and the like, wherein the photoelectric rotating speed sensor 20 is arranged at the shaft end of the direct current motor 1, the torque meter 9 is arranged between the transmission gear box 3 and the torque loader 5, the angle encoder 15 is respectively arranged at the high-speed shaft end and the low-speed shaft end, the acceleration sensor 16 is arranged at the box body, the bearing seat and the machine foot of the test gear box 4, the acoustic array instrument 17 is arranged at the 1m position of the outer surface of the test gear box 4, the thermometer 18 is respectively arranged at the bearing seat of the transmission gear box 3 and the test gear box 4, the sliding bearing seat 8, the torque loader 5 and the flowmeter 19 are respectively arranged at oil inlets and oil outlets of the transmission gear box 3, the test gear box 4, the torque loader 5, the sliding bearing seat 8 and the like. The above sensors, test instruments are connected to the data acquisition and analysis system 21 by cables.
According to different power sources, the running working conditions of the test bed are divided into motor working conditions and turning working conditions; the rated power of a direct current motor 1 is 1000kW, the rotating speed of a barring gear 10 is 13r/min, the maximum working rotating speed of a torque loader 5 is 5100r/min, the maximum loading torque is 18000Nm, and the loading can be carried out in a forward rotation and reverse rotation state; the maximum working speed of the speed-increasing gear box 2 is 4000r/min, the transmission ratio is 3.69, the maximum working speeds of the transmission gear box 3 and the test gear box 4 are 4000r/min, the transmission ratio is 2.86, the center distance is 400mm, and the enclosed power of the test bed is about 7000 kW; when the jigger 10 is used as a power source, namely under the jigger working condition, the high-speed shaft of the transmission gear box 3 is used as a driving shaft to respectively drive the low-speed shaft of the transmission gear box 3 and the transmission shaft 7, and the transmission gear box 3 and the test gear box 4 are gear boxes with the same design parameters, so that power sealing is formed; according to different loading torques of the torque loader 5, the closed power under the barring working condition is about 8.5 kW. When the direct current motor 1 is used as a power source, namely under the working condition of the motor, the direct current motor 1 promotes the rotating speed through the speed increasing gear box 2, so that a low-speed shaft of the transmission gear box 3 is driven, the low-speed shaft is a driving shaft to drive a high-speed shaft and a torsion shaft 6, the high-speed shaft of the transmission gear box 3 drives a high-speed shaft of the test gear box 4 through a transmission shaft 7, and the torsion shaft 6 drives a low-speed shaft of the test gear box 4. The main function of the test system is to monitor the running condition of the test bed and measure the physical quantity. The photoelectric rotating speed sensor 20 is used for testing the rotating speed output by the motor, and the thermometer 18 and the flowmeter 19 are used for respectively measuring the temperature of the bearing at the corresponding point position and the flow of lubricating oil and are mainly used for monitoring the running state of the test bed; the angle encoder 15 is respectively connected with the shaft end and the box body of the test gear box 4 through a coupler and a switching structure and is used for measuring the rotation angle of the shaft end, and the transmission error of the test gear box 4 can be calculated through the data acquisition and analysis system 21; the acceleration sensor 16 is used for measuring the acceleration response of the surface of the box body of the test gearbox 4, the bearing seat and the machine foot; the acoustic array meter 17 is used to measure the radiated noise and the external surface acoustic field of the test gearbox 4.
The test gear box 4 is matched with 8 pairs of test gear pairs which are respectively 4 pairs of herringbone gears with the same design parameter and different processing precision; 2 pairs of herringbone gear pairs are designed by changing the tooth width, the tooth crest height coefficient and the top clearance coefficient of the gear teeth without changing the modulus, the tooth number and the pressure angle, and different shaping parameters are respectively designed on the left tooth surface and the right tooth surface; the modulus, the tooth number and the tooth width are unchanged, and 1 pair of herringbone gear pairs is designed by changing the pressure angle of the gears; the 1 pair of the single bevel gear pair is designed without changing the number of teeth. The above 8 pairs of gear test pairs were used to perform the relevant validation tests: the method comprises the following steps of testing the influence of machining precision on the vibration noise of the gear box, testing the influence of tooth width on the vibration noise of the gear box, testing the influence of a pressure angle on the vibration noise of the gear box, testing the influence of a single bevel gear and a herringbone gear on the vibration noise of the gear box, and testing the influence of modification on the vibration noise of the gear box.
The torque loader 5 can realize forward and reverse loading in a running state, and by matching with a scheme of different tooth surface modification of the left tooth surface and the right tooth surface of the test gear box 4, the influence of different tooth surface modification on the vibration noise of the gear box can be contrastively analyzed; because only the loading direction is changed, the test process better controls other influencing factors of the tested piece, and is convenient for comparison.
Because of adopting the power closed structure, in order to guarantee compact structure and function realization, adopt torsion shaft 6 cooperation between test gear box 4 low-speed end and moment of torsion loader 5, torsion shaft 6 links to each other through the spline adapter sleeve with test gear box 4 low-speed axle, and the schematic diagram of structure is as follows. The spline structure can be positioned through the tooth crest, so that the installation precision is ensured, and the spline is matched with the torsion shaft 6, so that the torque can be stably transmitted; the torsion shaft 6 is matched with the diaphragm coupler 12 for use, and the diaphragm structure can ensure that the shaft system has enough bending rigidity and compensate the bending deformation of the shaft system.
The angle encoder 15 is respectively connected with the shaft end and the box body of the test gear box 4 through a coupler and a switching structure.
Claims (2)
1. The utility model provides a gear vibration noise test bench which characterized by: including direct current motor, the step-up gear box, the transmission gear box, experimental gear box, the moment of torsion loader, direct current motor passes through the elastic pin shaft coupling and links to each other with the step-up gear box low-speed axle, the step-up gear box high-speed axle passes through the diaphragm coupling and links to each other with the transmission gear box low-speed end, transmission gear box high-speed end one side links to each other with the barring machine through the diaphragm coupling, transmission gear box high-speed end opposite side connection transmission shaft, the transmission shaft passes through diaphragm coupling connection experimental gear box low-speed axle, the transmission shaft passes through the slip bearing frame and supports, the torque meter is connected to transmission gear box low-speed end, the torque loader is connected to the torque loader through the diaphragm coupling, the torque axle links to each other with experimental gear box low-speed axle through the spline adapter sleeve.
2. The gear vibration noise test stand of claim 1, wherein: the direct current motor, the speed-up gear box, the transmission gear box, the test gear box, the torque loader and the sliding bearing seat are all installed on a support, the support is fixedly connected with a test room foundation, the direct current motor, the speed-up gear box, the transmission gear box, the torque loader, the torsion shaft, the transmission shaft, the sliding bearing seat, the torque meter, the turning gear, the elastic pin coupling, the diaphragm coupling and the support are placed in a sound insulation cover, and connecting gaps among the sound insulation cover, the torsion shaft and the transmission shaft are filled with foam materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023185242.2U CN214584023U (en) | 2020-12-25 | 2020-12-25 | Gear vibration noise test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023185242.2U CN214584023U (en) | 2020-12-25 | 2020-12-25 | Gear vibration noise test bench |
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| Publication Number | Publication Date |
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| CN214584023U true CN214584023U (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023185242.2U Active CN214584023U (en) | 2020-12-25 | 2020-12-25 | Gear vibration noise test bench |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114509258A (en) * | 2022-01-12 | 2022-05-17 | 安徽科技学院 | Vibration and noise integrated testing machine for experimental study of gear characteristics of speed reducer |
| CN115144070A (en) * | 2022-09-01 | 2022-10-04 | 万向钱潮股份公司 | Detection box, noise detection system and noise detection method thereof |
-
2020
- 2020-12-25 CN CN202023185242.2U patent/CN214584023U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114509258A (en) * | 2022-01-12 | 2022-05-17 | 安徽科技学院 | Vibration and noise integrated testing machine for experimental study of gear characteristics of speed reducer |
| CN114509258B (en) * | 2022-01-12 | 2023-09-12 | 安徽科技学院 | Vibration and noise integrated testing machine for experimental study of gear characteristics of speed reducer |
| CN115144070A (en) * | 2022-09-01 | 2022-10-04 | 万向钱潮股份公司 | Detection box, noise detection system and noise detection method thereof |
| CN115144070B (en) * | 2022-09-01 | 2022-12-06 | 万向钱潮股份公司 | Detection box, noise detection system and noise detection method thereof |
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