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Lead-screw-driving-based radial alternating load loading device for bearing testing machine

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

Inactive Publication Date: 2018-07-06
SHANGHAI JIAN QIAO UNIV
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  • Summary
  • 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 dynamic load bearing is often under alternating load, so it is difficult for the traditional bearing test loading device to realize the alternating load of the dynamic load bearing of the engine. load

Method used

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  • Lead-screw-driving-based radial alternating load loading device for bearing testing machine
  • Lead-screw-driving-based radial alternating load loading device for bearing testing machine

Examples

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Embodiment 1

[0027] like figure 1 As shown, a radial alternating load loading device for a bearing testing machine based on screw drive, the bearing testing machine includes a rotating shaft 1, and the tested bearing 2 is installed on the rotating shaft 1, and the loading device includes Fixture 3, and the axially symmetrical and radially symmetrical rotary motor-screw drive mechanism-spring assembly arranged around the clamp 3, wherein the axially symmetrical rotary motor-screw drive mechanism-spring assembly The tested bearing 2 applies an axial alternating load, and the radially symmetrical rotating motor-screw drive mechanism-spring assembly applies a radial alternating load to the tested bearing 2 in the fixture 3 .

[0028] The rotating motor-screw drive mechanism-spring assembly includes assembly A, assembly B, assembly C and assembly D, wherein assembly A and assembly D are axially symmetrically arranged on the upper and lower sides of the clamp 3, assembly B and assembly C are arr...

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Abstract

The invention relates to a lead-screw-driving-based radial alternating load loading device for a bearing testing machine. The bearing testing machine comprises a rotating shaft (1); and a tested bearing (2) is installed on the rotating shaft (1). The loading device is composed of a clamp (3) and rotary motor-lead screw driving mechanism-spring assemblies arranged around the clamp (3) in axial symmetry and radio symmetry; the lead screw driving mechanisms include couplers (51) ), lead screw bearings (52), lead screw nuts (53), lead screws (54) and bearing bases (55); the rotary motors are connected with the lead screw bearings (52) and the lead screws (54) successively by the couplers (51); the lead screw nuts (53) are arranged at the lead screws (54); and the bearing bases (55) are arranged at the bottoms of the lead screws (54) and are connected with springs. Compared with the prior art, the lead-screw-driving-based radial alternating load loading device has advantages of being capable of realizing the real working condition load of the internal combustion engine and the like.

Description

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

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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