Alternating load loading device for bearing testing machine, based on screw rod transmission mechanism

A technology of screw drive and bearing test, which is applied in the direction of transmission device, mechanical bearing test, mechanical equipment, etc. It can solve the problems of single loading characteristic and inability to realize variable load.

Inactive Publication Date: 2018-07-10
SHANGHAI JIAN QIAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the loading characteristics of the traditional bearing test device are single, and the loading of variable loads cannot be realized. In the real internal combustion engine, the dynami

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  • Alternating load loading device for bearing testing machine, based on screw rod transmission mechanism
  • Alternating load loading device for bearing testing machine, based on screw rod transmission mechanism

Examples

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[0021] Example 1

[0022] Such as figure 2 As shown, an alternating load loading device for a bearing testing machine based on a screw drive mechanism, the bearing testing machine includes a rotating shaft 1, the tested bearing 2 is mounted on the rotating shaft 1, and the loading device includes a clamp 3, and a plurality of rotating motor-screw transmission mechanism-spring units arranged around the clamp 3. The rotating motor-screw transmission mechanism-spring assembly includes the rotating motor, the screw transmission mechanism and the spring connected in turn, the rotating motor The screw drive mechanism is driven to move, the control spring is stretched or compressed and deformed, and an alternating load is applied to the tested bearing 2 in the clamp 3.

[0023] Wherein, there are two rotating motor-screw transmission mechanism-spring assemblies: assembly A and assembly B, which are symmetrically arranged on the upper and lower sides of the clamp 3. The assembly A inclu...

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PUM

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Abstract

The invention relates to an alternating load loading device for a bearing testing machine, based on a screw rod transmission mechanism. The bearing testing machine includes a rotating shaft (1), wherein a tested bearing (2) is arranged on the rotating shaft (1). The alternating load loading device includes a clamp (3) and a plurality of rotary motor-screw rod transmission mechanism-spring assemblies surrounding the clamp (3), wherein each rotary motor-screw rod transmission mechanism-spring assembly includes successively connected rotary motor, screw rod transmission mechanism and spring; eachscrew rod transmission mechanism includes a shaft coupling (51), a screw rod bearing (52), a screw-nut (53), a screw rod (54) and a bearing pedestal (55); and the rotary motor drives the screw rod transmission mechanism to move to control the spring to generate stretching or compression deformation and apply alternating load to the tested bearing (2) in the clamp (3). Compared with the prior art,the alternating load loading device for a bearing testing machine has the advantages of being able to realize the real condition load of the internal combustion engine.

Description

technical field [0001] The invention relates to a loading device for a bearing testing machine, in particular to an alternating load loading device for a bearing testing machine based on a screw drive mechanism. 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 frict...

Claims

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Application Information

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IPC IPC(8): G01M13/04F16H25/20
CPCG01M13/04
Inventor 张迪刘立华陈志澜
Owner SHANGHAI JIAN QIAO UNIV
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