A non-contact reciprocating rotary motion counter

Abstract

The invention belongs to the field of air-oil lubrication devices, and relates to a non-contact reciprocating and rotating motion counter which is used for a progressive oil distributor. The counter mainly and structurally comprises a connecting rod, a connecting sleeve, an annular magnet, a cylindrical magnet, a bearing sleeve, a rectangular baffle plate and a photoelectric switch, the connectingsleeve is mounted on a shell of the progressive oil distributor, a plug is mounted at one end of the connecting sleeve, a connecting sleeve inner cavity is communicated with a piston rod inner cavityof the progressive oil distributor, the connecting rod is arranged in the connecting sleeve, one end of the connecting rod is connected with a piston rod of the progressive oil distributor, the annular magnet mounted at the other end of the connecting rod and the piston rod of the progressive oil distributor simultaneously reciprocate, the cylindrical magnet is fixed in a square groove in the bearing sleeve, the rectangular baffle plate is arranged at the other end of the bearing sleeve and opposite to the cylindrical magnet, the cylindrical magnet can be controlled under the action of magnetic force, reliability of signal transmission is improved, dynamic sealing design is avoided, and the problem of oil leakage caused by abrasion of a sealing part is solved.

Description

Technical field: [0001] The invention belongs to the technical field of oil-air lubrication equipment, and relates to a counter design for a progressive oil volume distributor, in particular to a non-contact reciprocating rotary motion counter. Background technique: [0002] The progressive oil volume distributor is a key component in the oil-air lubrication system. The progressive oil volume distributor can output the lubricating oil of a single oil circuit input by the oil pump from multiple oil circuit outlets in sequence, and control the amount of lubricating oil. Metering the output of the oil-air lubrication system is the basis for realizing multi-point and quantitative oil supply in the oil-air lubrication system. The progressive oil distributor is driven by pressure oil, through the logical action of the internal plunger pump, it realizes the sequential output of multi-channel lubricating oil, and at the same time records the number of reciprocating movements of the ...

AI Technical Summary

Problems solved by technology

In the prior art, the connecting rod of the sealing ring-type progressive oil distributor is connected to the piston rod, and the housing is connected to the housing of the progressive oil distributor. The connecting rod reciprocates with the piston rod and is counted by the proximity sensor. The connecting rod is sealed by a sealing ring to ensure that the high-pressure lubricant in the progressive oil distributor will not leak, but the inner cavity of the housing cannot withstand high-pressure oil. Due to the high oil pressure in the progressive oil distributor, the viscosity of the lubricating oil High, the assembly error of the piston rod, the processing error of the connecting rod, and the wear and tear of the reciprocating movement of the connecting rod cause the sealing ring to often leak oil. Once the oil leakage of the sealing ring will cause the oil supply of the lubrication point to be lower than the design value, resulting in It is imprecise and pollutes the working environment at the same time, and has poor practicability; although the patent 201710941713.1 can effectively solve the oil leakage problem of the sealing ring, there is sliding friction between the shell and the cylindrical magnet, which not only limits the service life, but also affects the lubricating oil. High requirements for addition amount and viscosity

If too much lubricating oil is added, the movement resistance of the cylindrical magnet will be too large, causing the counter to fail; if too little lubricating oil is added, the cylindrical magnet will not be lubricated sufficiently, which will easily cause wear and reduce the service life; and the viscosity of the lubricating oil is easily affected by temperature. Influence, when the ambient temperature is low, the viscosity of the lubricating oil increases, which will also cause excessive resistance to the movement of the cylindrical magnet, and the counter will fail

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