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Bearing testing apparatus capable of applying radial alternating load

A technology of alternating load and bearing test, applied in the direction of mechanical bearing test, etc., can solve the problems of single loading characteristic, difficult to carry out engine dynamic load bearing test, unable to realize variable load loading, etc., and achieve the effect of accurate loading position

Inactive Publication Date: 2018-05-15
SHANGHAI JIAN QIAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the traditional bearing test device has a single loading characteristic and cannot realize variable load loading. In real internal combustion engines, the dynamic load bearing is often under alternating loads, so it is difficult for the traditional bearing test device to carry out the test of the dynamic load bearing of the engine.

Method used

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  • Bearing testing apparatus capable of applying radial alternating load
  • Bearing testing apparatus capable of applying radial alternating load

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A bearing test device that can apply radial alternating loads, such as figure 1 As shown, the device includes a computer 1, a rotating motor 2, a coupling 3, a torque meter 4, a fixed fixture A 5, an oil supply system 6, a radial alternating load loading module 7, a movable fixture 8, a fixed fixture B 9, Rotary shaft 10, accompanying test sliding bearing B 11, tested sliding bearing B 12, tested sliding bearing A 13, accompanying test sliding bearing A 14, working platform 15. Among them, such as figure 2 As shown, the radial alternating load loading module 7 includes a temperature sensor 16, a linear motor A 17, a connection device Aa 18, a spring A 19, a connection device Ab 20, a linear motor B 21, a connection device Ba 22, a spring B 23, a connection Device Bb 24, Connection device Cb 25, Spring C 26, Connection device Ca 27, Linear motor C 28, Connection device Db 29, Spring D 30, Connection device Da 31, Linear motor D 32.

[0029] Wherein, the rotating motor...

Embodiment 2

[0034] A bearing test device that can apply radial alternating loads, its structure is roughly the same as that of Embodiment 1, the difference is that the output shafts of the four linear motors in this embodiment are provided with protective sleeves, thereby improving the mechanical Strength and safety performance.

Embodiment 3

[0036] A bearing test device capable of applying radial alternating loads, its structure is roughly the same as that of Embodiment 1, the difference is that the bottom of the four linear motors is provided with a support frame to fix the position, and there is a passage between the four support frames. The connection frame is connected to further control the position of the linear motor in the horizontal and vertical directions, and the loading position is more accurate.

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Abstract

The invention relates to a bearing testing apparatus capable of applying radial alternating loads. The apparatus comprises a computer, a rotary motor, a rotary shaft, an alternating load loading module and test accompanying bearings, wherein the rotary motor is controlled by the computer, the output shaft of the rotary motor is connected to the rotary shaft through a coupling; a tested sliding bearing sleeves on the rotary shaft; a movable clamp sleeves on the sliding bearing; the test accompanying bearings are arranged on the left and right sides of the sliding bearing; fixed clamps are arranged on the outer sides of the test accompanying bearings to fix and support; the alternating load loading module is arranged on the movable clamp and is composed of four groups of assemblies which aresymmetrical in pairs in four directions. Each of the assemblies comprises a linear motor, a spring and a connecting device. Compared with the prior art, the apparatus can load alternating loads in four direction and two radial directions of the bearing.

Description

technical field [0001] The invention relates to a load test device, in particular to a bearing test device capable of applying radial alternating loads. Background technique [0002] Internal combustion engines are widely used in automobiles, ships, airplanes, tanks, railway locomotives, agricultural machinery, construction machinery, generator sets and other industries. As power equipment, they occupy a very important position in the national economy. The internal combustion engine includes several important friction pairs such as piston-cylinder liner, piston ring-cylinder liner, crankshaft-bearing and cam-tappet. Among them, the crankshaft bearing, including the main bearing and the connecting rod bearing (due to the working load of this type of bearing The size and direction of the internal combustion engine change with time, so it is usually called a dynamic load bearing), which is one of the most critical friction pairs of the internal combustion engine. It not only af...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/04
CPCG01M13/04
Inventor 张迪刘立华陈志澜
Owner SHANGHAI JIAN QIAO UNIV
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