Multi-oil cylinder axial loading system

Abstract

A multi-oil cylinder axial loading system consists of a hydraulic system, a loading device, a force conduction and measurement device and a measurement and control system which are arranged in sequence; the loading device consists of a loading oil cylinder cover plate and a cylinder block arranged parallelly, a plurality of through holes and a plurality of blind holes are annularly, uniformly and alternately arranged in the cylinder block, springs are arranged in the blind holes, and oil cylinders are arranged in the through holes; the force conduction and measurement device includes pressure bearing rings, the stress ends of the pressure bearing rings are arranged close to the springs and oil cylinders, the non-stress ends of the pressure bearing rings are also annularly uniformly provided with a plurality of force sensors; the hydraulic system includes an oil tank, an oil supply pump unit, an overflow valve and a proportional pressure-reducing valve which communicate in sequence, and the outflow end of the proportional pressure-reducing valve communicates with the oil cylinders; and the force sensors are connected with the signal input end of the measurement and control system through force signal transformer, and the signal output end of the measurement and control system is connected with the proportional pressure-reducing valve. The multi-oil cylinder axial loading system provided by the invention can provide double loading force of spring preloading and hydraulic follow-up loading, loading force is stable, and the adjustable range is large.

Description

technical field [0001] The invention relates to the technical field of bearing tests, in particular to a multi-cylinder axial loading system. Background technique [0002] Bearings are key basic components in the manufacture of various equipment, and their quality directly determines the performance, reliability and life of the equipment; due to the harsh working environment and complex load conditions of the bearings, it must be long enough or even The whole life cycle of equipment is maintenance-free, etc. During the design, development and manufacturing process, the bearing must be verified on the testing machine for the corresponding simulated working conditions to provide reliable test data for research, design, manufacture and use, and for the bearing. Design, manufacture and use provide the basis. [0003] In the test of the bearing, it is necessary to simulate the actual working condition of the bearing, which requires a certain loading force when the bearing is wor...

AI Technical Summary

Problems solved by technology

However, this patent only uses the spring to apply the loading force. Due to the force application characteristics of the spring, the automatic adjustment of the loading force cannot be realized, and the adjustment range of the loading force is also very limited.

It is known that the axial loading of the bearing can be carried out in a hydraulic way, which has the advantages of fast response and high control precision, but there are still some shortcomings, especially the problem of dead zone will have a great impact on the bearing test

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