Automatic electric barring device

Abstract

The invention relates to an automatic electric barring device. The automatic electric barring device comprises a motor, a speed reducer, a clutch, an axial displacement output device and a travel switch. The clutch comprises a pair of bevel gears, a spline shaft, a transmission shaft, a clutch shaft, an electromagnet, a first coil which is opposite to the magnetic pole of the electromagnet, and asecond coil which is the same as the magnetic pole of the electromagnet. A small bevel gear in the pair of bevel gears is arranged on an output shaft of the speed reducer in a sleeved mode, and a large bevel gear in the pair of bevel gears and the transmission shaft are installed on the same spline shaft through splines. The outer circle of the transmission shaft is provided with an outer thread section which is connected with the inner thread section of the inner hole of the clutch shaft in a matched mode. A barring gear is arranged on the outer circle of the clutch shaft, and an electromagnet is embedded in the end face of the clutch shaft. The first coil, the second coil, the axial displacement output device and the travel switch are arranged on the clutch box body. According to the automatic electric barring device, the electromagnet and the two coils form a rotating speed difference between the inner threads and the outer threads which are meshed with each other when the clutch shaft and the transmission shaft are synchronously rotated, so that the clutch shaft can axially move along the threaded section, and automatic meshing and automatic disconnection of the barring devicecan be realized.

Description

technical field [0001] The invention relates to an electric barring device, in particular to an electric barring device which utilizes electromagnetic force to realize automatic clutching by using electromagnetic force to realize the speed difference between internal and external threads meshing with each other. Background technique [0002] Before starting or after stopping, the rotating machinery needs to bar the rotor to check whether there is friction between the static and moving parts of the equipment, and whether the rotor camber is normal, so as to prevent failures and improve the service life of the rotor. Chinese patent 200620104665.8 introduces an electric cranking device, including a motor, a reducer and a clutch. Among them, the clutch cooperates with the ratchet wheel at the rear of the outer wall of the transmission sleeve and the ratchet at the rear of the output sleeve to realize the speed difference between the internal and external threads meshing with eac...

AI Technical Summary

Problems solved by technology

For this type of turning device, the disc gear is directly set on the rotor of the rotating machine or directly connected to the rotor through a flange. The pawl needs to be set on the disc gear, which will affect the dynamic balance performance of the rotor. There are differences in the phase of the rotor unbalance at different dynamic balancing speeds on the machine

Especially after the ratchet or the torsion spring used for restraining the ratchet is repaired or replaced on site, the influencing factors are greater, which will affect the vibration level of the rotating machinery

In addition, when working continuously for a long time under the environmental conditions of continuous vibration, the torsion spring may fail, causing the pawl to throw out and collide with the ratchet, causing failure

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