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Electromotor overspeed preventer

An anti-overspeed and motor technology, applied in the field of motors, can solve problems such as stability and sealing degradation, achieve high protection level, precise action, and ensure safe operation

Inactive Publication Date: 2009-11-11
魏秋湘
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an anti-overspeed device for motors, which solves the problem that the motor shaft speed exceeds the rated speed and the stability and sealing performance decrease when the motor shaft has voltage fluctuations or instantaneous high voltage.

Method used

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  • Electromotor overspeed preventer

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Embodiment Construction

[0012] Such as figure 1 As shown, the motor overspeed prevention device according to the embodiment of the present invention mainly includes a coupling shaft 2, an encoder 3 and an overspeed switch 4, the coupling shaft 2 is connected to the motor main shaft 1, and the encoder 3 is fixed on the coupling shaft 2, The overspeed switch 4 is coaxially connected with the coupling shaft 2 . The present invention also includes the hoisting flange seat 5 and the outer cover 6, the hoisting flange seat 5 is connected to the outer cover 6, the connecting shaft 2 is located inside the hoisting flange seat 5 and the outer cover 6, the hoisting flange seat 5 and the overspeed switch 4 connections.

[0013] In the present invention, the main shaft 1 is connected with the coupling shaft 2, and the encoder 3 and the overspeed switch 4 are installed to act as a When the motor is running, the main shaft 1 of the motor drives the coupling shaft 2, and the coupling shaft 2 drives the encoder 3 ...

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Abstract

The invention relates to an electromotor overspeed preventer, and the main design of the preventer comprises that: a coupling shaft is connected with a main shaft of an electromotor; a coder and an overspeed switch are arranged on a coupling; the coder and the overspeed switch have the characteristics of small volume, high coaxial precision, accurate action, convenient mounting, adaptability to environmental temperature variation and high protection level; the coder adopts the photoelectric effect and measures the length, the position, the speed, the angle or other physical quantities; a sensor for converting mechanical displacement quantity into an electrical signal has high-quality signals, antifatigue compensation, temperature compensation, short-circuit protection, impact resistance and vibration resistance; and the overspeed switch limits the maximal rotational speed of the electromotor, achieves the aims of rapidly breaking the circuit and ensuring the safe operation of equipment and has the bidirectional protective function of positive rotation and reverse rotation.

Description

technical field [0001] The invention relates to a motor, in particular to a device installed on the motor shaft to prevent the motor shaft from overspeeding. Background technique [0002] As we all know, when the motor shaft runs at high speed, it will generate a lot of heat from the friction of the bearing and the sealing structure. If the temperature is too high, it will seriously affect the stability of the motor operation and the sealing effect, and then affect the service life of the motor. If the motor encounters voltage fluctuations or instantaneous high voltage, the speed of the motor will exceed the rated speed of the motor, which will cause great harm at this time. Therefore, based on the above problems, I designed a device that can prevent the motor shaft from running at high speed, so that the motor can run more smoothly, thereby prolonging the service life of the motor. Contents of the invention [0003] The purpose of the present invention is to provide an a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/093H02K11/00H02K11/22
Inventor 魏秋湘
Owner 魏秋湘
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