CN203298989U - Gear dynamics characteristic test device - Google Patents

Abstract

The utility model relates to a gear dynamics characteristic test device. A flat foundation of the gear dynamics characteristic test device is respectively provided with a magnetic powder loader and a driving motor through loading an elastic support, a central portion of the foundation is provided with a gear case comprising an upper case body and a lower case body, the lower case body is parallelly provided with an input shaft and an output shaft internally, one end of the input shaft is connected with an output shaft of the driving motor through a driving motor shaft coupling, one end of the output shaft is connected with an output shaft of the magnetic powder loader through a loader shaft coupling, the output shaft in the lower case body is provided with a first acceleration sensor, a position on the lower case body corresponding to the first acceleration sensor is provided with a second acceleration sensor, and a position on the upper case body corresponding to the output shaft in the lower case body is provided with a sound intensity sensor. The gear dynamics characteristic test device realizes acquisition of noise and vibration information of a detected gear pair, analysis and processing on the acquired signals are carried out, a research on dynamics performance of a gear is realized, the gear dynamics characteristic test device has great significance in improvement of mechanism operation performance and quality and in mechanism design and mechanism optimization of the gear.

Description

Gear dynamic characteristic test device

technical field

The utility model belongs to the technical field of detection devices for mechanical spare parts, in particular to a gear dynamics characteristic test device suitable for testing gear vibration and noise.

Background technique

Gears are the main transmission system of various mechanical equipment, and are widely used in machine tools, automobiles, aircraft, ships and other machinery. The dynamic characteristics of gear mechanisms directly affect the performance and work of mechanical equipment. With people's requirements for vibration, noise and other conditions, the dynamic characteristics of gear system have become a subject that cannot be ignored. The traditional direct observation method is mainly based on human feeling and experience, which has great limitations. At present, most of the gear test benches are mainly aimed at gear efficiency and temperature rise tests, while gear vibration and noise tests are relatively rare, and there is no effective test bench for gear vibration and noise tests. The intensity of vibration and noise and their main frequency components are closely related to the operating state of mechanical equipment. Using this information to evaluate the working state of gear transmission is a more effective method.

Utility model content

In order to realize the test of the vibration and noise of the gear, the utility model provides a gear dynamic characteristic test device.

The specific technical solutions are as follows:

The gear dynamics test device includes a flat base, one side of the base is provided with a magnetic powder loader through a loading elastic support, the other side is provided with a driving motor through a motor elastic support, and a gear box is provided in the middle of the base; the gear box includes The upper box and the lower box; the lower box is provided with an input shaft and an output shaft in parallel; one end of the input shaft extends to the outside of the lower box, and is connected to the output shaft of the drive motor through the drive motor coupling; one end of the output shaft It extends to the outside of the lower box and is connected to the output shaft of the magnetic powder loader through the loader coupling; the output shaft in the lower box is provided with a first acceleration sensor, and the lower box corresponding to the first acceleration sensor is provided with The second acceleration sensor; the upper box corresponding to the output shaft in the lower box is provided with a sound intensity sensor; during the test, lubricating oil is injected into the lower box to ensure the oil immersion depth of the large gear in the gear pair under test in the oil pool is a tooth height.

The loading elastic support is composed of two loading springs, each of which is a leaf spring; the elastic support of the motor is composed of two loading springs, each of which is a leaf spring.

The bottom side of the lower box body is provided with an oil discharge screw hole, and an oil discharge bolt is arranged in the oil discharge screw hole.

The upper cover of the magnetic powder loader is provided with a loader soundproof cover, and the upper cover of the driving motor is provided with a drive motor soundproof cover; the material of the loader soundproof cover and the material of the drive motor soundproof cover are high-density soundproof plexiglass.

The beneficial technical effects of the utility model are embodied in the following aspects:

(1) The utility model has simple structure and reliable performance;

(2) The utility model can realize the acquisition of the noise and vibration information of the gear pair under test, and process and analyze the collected signals, which can realize the research on the dynamic performance of the gear, and has a great impact on improving the operating performance and quality of the gear mechanism and the gear The design and optimization of the mechanism has important significance and application;

(3) The input device and loading device used in this utility model are all elastically connected, which can effectively eliminate the influence of external factors on the test results.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the structural representation of the utility model that removes the sound insulation cover.

Fig. 3 is a structural schematic diagram of the elastic support of the utility model.

Serial number in the above picture: base 1, magnetic powder loader 2, loader soundproof cover 3, upper box body 4, sound intensity sensor 5, driving motor soundproof cover 6, loader coupling 7, lower box body 8, oil drain bolt 9. Driving motor 10, driving leaf spring 11, loading leaf spring 12, measured gear pair 13, input shaft 14, output shaft 15, driving motor coupling 16, first acceleration sensor 17, second acceleration sensor 18.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described further by embodiment.

Referring to Fig. 1, the gear dynamics test device includes a plate-shaped base 1, and a magnetic powder loader 2 is installed on one side of the base 1 through two loading plate springs 12, and the model of the magnetic powder loader 2 is Mitsubishi ZKB-XN; A driving motor 10 is installed on the side through two driving leaf springs 11, as shown in Fig. 3; a gear box is installed in the middle of the base 1. The upper cover of the magnetic powder loader 2 is provided with a loader soundproof cover 3, and the upper cover of the drive motor 10 is provided with a drive motor soundproof cover 6; the material of the loader soundproof cover 3 and the material of the drive motor soundproof cover 6 are high-density sound-proof organic Glass.

The gear box includes an upper case body 4 and a lower case body 8 , referring to FIG. 2 , an input shaft 14 and an output shaft 15 are installed in parallel in the lower case body 8 . One end of the input shaft 14 extends to the outside of the lower casing 8, and is connected to the output shaft 15 of the drive motor 10 through the drive motor coupling 16; one end of the output shaft 15 extends to the outside of the lower casing 8, and is connected to the shaft through the loader The device 7 is connected to the output shaft 15 of the magnetic powder loader 2. The output shaft 15 in the lower casing 8 is provided with a first acceleration sensor 17, and a second acceleration sensor 18 is installed on the lower casing 8 corresponding to the first acceleration sensor 17; corresponding to the output shaft 15 in the lower casing 8 A sound intensity sensor 5 is installed on the upper box body 4 of the car. One side of the lower part of the lower casing 8 is provided with an oil discharge screw hole, and an oil discharge bolt 9 is installed in the oil discharge screw hole.

During the test, firstly, fixedly install the tested gear pair 13 on the input shaft 14 and the output shaft 15 in the lower box body 8, and inject 1.5-2L lubricating oil into the lower box body 8 to ensure that the tested gear pair 13 The oil immersion depth of the gearwheel in the oil pool is a tooth height; and the upper casing 4 is closed on the lower casing 8 and fixed with bolts.

Then, the drive motor 10 is connected with the drive motor coupling 16 and adjusted to a proper position; the loader coupling 7 is connected with the magnetic powder loader 2 and adjusted.

Finally, power is supplied to rotate the drive motor 10, and at the same time, the magnetic powder loader 2 is loaded; the sound intensity sensor 5 and the acceleration sensor collect test data respectively. After the test is over, the test data is analyzed by the control system, and the oil drain bolt 9 is opened to discharge the lubricating oil from the lower case 8, and the gear pair 13 to be tested is removed.

Claims (4)

1. Gear dynamics test device, characterized in that it includes a flat base, one side of the base is provided with a magnetic powder loader through a loading elastic support, the other side is provided with a driving motor through a motor elastic support, and a gear is provided in the middle of the base box; the gear box includes an upper box and a lower box; the lower box is provided with an input shaft and an output shaft in parallel; one end of the input shaft extends to the outside of the lower box, and is connected to the drive motor through the drive motor coupling Output shaft; one end of the output shaft extends to the outside of the lower box, and is connected to the output shaft of the magnetic powder loader through the loader coupling; the output shaft in the lower box is provided with a first acceleration sensor, corresponding to the first acceleration sensor A second acceleration sensor is provided on the lower box; a sound intensity sensor is provided on the upper box corresponding to the output shaft in the lower box; during the test, lubricating oil is injected into the lower box to ensure that the large gear in the gear pair under test is The oil immersion depth in the oil pool is one tooth height. 2. The gear dynamics test device according to claim 1, characterized in that: the loading elastic support is composed of two loading springs, and each loading spring is a leaf spring; the elastic support of the motor is composed of two loading springs Composition, each loading spring is a leaf spring. 3. The gear dynamic characteristic test device according to claim 1, characterized in that: an oil drain screw hole is opened on the lower side of the lower box body, and an oil drain bolt is arranged in the oil drain screw hole. 4. The gear dynamics characteristic test device according to claim 1, characterized in that: the upper cover of the magnetic powder loader is provided with a loader soundproof cover, and the upper cover of the driving motor is provided with a drive motor soundproof cover; The material of the cover and the sound-proof cover of the drive motor are both high-density sound-proof plexiglass.

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