Friction transmission valve electric operating device

Abstract

An electric device using friction to drive a valve is provided. The friction pulley of a motor shaft is connected with a friction disc. The friction pulley on the friction disc is connected with a friction disc 11, which forms a stepless reducing mechanism. A butterfly spring 1 is rung on an output shaft, respectively connected with the friction disc 11 and a bearing 1. A butterfly spring 11 is arranged on the shaft of the friction disc, the other end of which is connected with a plane bearing 1. A case serves as the main body, which is the assembly part of a case cover, a handwheel, a bolt, a motor and an electric case cover and vice versa. The other end of the plane bearing 1 is connected with the end plane of the case. A bearing 11 is embedded on the case. An inner hole is matched with the shaft extending out of one end of the friction disc. The output shaft is provided with a tooth socket and a threaded hole, which forms the valve connecting structure of the user. A manual switching mechanism and the friction disc 11 are arranged on the spline groove of the output shaft. The top circle of the friction disc 11 is provided with a rack meshing with a travel switch gear. The travel switch gear is arranged in the electric case cover. The invention has the advantages of simple structure, the easy processing and manufacture and low cost.

Description

technical field [0001] The invention belongs to a drive device capable of providing linear or rotary motion, which is a general-purpose mechanical product driven by electric energy and works under the action of a certain control signal, especially relates to a valve electric device that uses friction wheel transmission technology to control opening and closing. Background technique [0002] 1. The main function of the valve electric device [0003] Because more and more factories adopt automatic control, and manual operation is replaced by automatic equipment, people require Denso to be able to play an interface role between the control system and the mechanical movement of the valve, and to enhance work safety performance and environmental protection performance; In some dangerous situations, automated devices can reduce personnel injuries; some special valves require emergency opening or closing under special circumstances; they can prevent further spread of danger and min...

AI Technical Summary

Problems solved by technology

Due to the different working conditions, the market demand for the performance and price of the device is diverse, which brings certain difficulties to the designer and manufacturer; another example is the use of non-ferrous metals (copper alloys) to make worm gears with good wear resistance and low price. High, other alternative materials (aluminum alloy, cast iron) are difficult to achieve the ideal use effect due to poor reliability

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