Waterproof rotary encoder

Abstract

The invention provides a waterproof rotary encoder capable of continuously detecting displacement underwater through a sealed tank and magnetic coupling method. The waterproof rotary encoder comprisesa watertight plug, a sealed tank, a sealed tank end cover, an inner magnet, an outer magnet, a rotary wheel, a drive shaft and a rotary encoder body. The bottom of the sealed tank is provided with athrough hole. The watertight plug is arranged at the through hole. The sealed tank end cover is connected with the open end of the sealed tank. A side of the sealed tank end cover is provided with a stepped shaft. A groove is disposed on the other side of the sealed tank end cover. One end of the drive shaft is arranged in a groove and is connected with the inner magnet. The other end of the driveshaft is connected with the input shaft of the rotary encoder body. The output end of the rotary encoder body is connected with the watertight plug via a wire. The stepped shaft of the sealed tank end cover is sleeved with an outer magnet mounting seat. An outer magnet is fixed to the inner wall of the outer magnet mounting seat at a position opposite to the inner magnet in the groove. The rotarywheel sleeves the stepped shaft of the sealed tank end cover and is fixedly connected with the outer magnet mounting seat. The rotary wheel can rotate relative to the stepped shaft.

Description

technical field [0001] The invention relates to the technical field of rotary encoders, in particular to a waterproof rotary encoder. Background technique [0002] Displacement testing is widely used in engineering, not only because it is often necessary to accurately measure the displacement or position of objects in various projects, but also because parameters such as speed, acceleration, force, pressure, torque, temperature, flow, and level Many of the test methods are based on the displacement test. [0003] At present, the measurement of linear displacement on the market is mainly realized by magnetostrictive sensors, wire encoders and laser displacement sensors, but these methods have great disadvantages. [0004] First of all, although the magnetostrictive sensor can be packaged to achieve the purpose of waterproofing, its single measurement distance is relatively short, the maximum is only a few meters, and for the measurement of tens of meters or even hundreds of ...

AI Technical Summary

Problems solved by technology

However, the laser generating device required for long-displacement measurement is very complex and bulky, and it is difficult to package and waterproof, which is not conducive to practical use. Therefore, the application requirements of laser displacement sensors are relatively strict.

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