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Wired monitoring multi-protection controller of electric hoist

An electric hoist, multi-protection technology, applied in the direction of automatic disconnection of emergency protection devices, instruments, electrical components, etc., can solve the problems of delay, short service life and low control accuracy.

Inactive Publication Date: 2009-10-14
孙佩杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current electric hoist has no anti-cable pull control device. When the rise exceeds the limit, the mechanical device drives the switch action to perform power-off processing. There is a delay, the control accuracy is not high, easy to wear, malfunction, and the service life is short. The contactor is stuck without protective device control. If any of the above situations occurs, the electric hoist and the motor will be damaged.

Method used

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  • Wired monitoring multi-protection controller of electric hoist

Examples

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Embodiment Construction

[0006] The embodiment is described in detail in conjunction with the above accompanying drawings. The steel wire rope at the fixed end of the reel cover is connected with an anti-slanting sensor 8, a rise sensor 7, and a rise limit sensor 6. A fall sensor 5 and a fall limit sensor 4 are fixed on the left side of the reel cover. The electrical signals output by the sensors are sent to the CPU 9 for calculation through the output terminal. After the calculation of the CPU 9, the signal output terminals are respectively connected to the ULN2803 drive module 10 through wires. Connected to the loop of the AC contact voltage coil in the electrical control box 12, the signal output terminals of the control box 12 are respectively connected to the motor through wires. The above-mentioned executive relay 11 is composed of a CD relay, an MD relay, a CD drop limit Relay, total stop relay, left-travel small sports car relay, right-travel small sports car relay, left-travel large sports car...

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PUM

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Abstract

The invention relates to a wired monitoring multi-protection controller of an electric hoist, comprising an electrical apparatus control cabinet and electric motors. A wire rope on a fixed terminal of an outer shield of a drum is connected with an anti-inclined-drawing sensor, a lifting sensor and a lifting limit sensor. The left side of the outer shield of the drum is fixedly provided with a falling sensor and a falling limit sensor. The sensors output electrical signals to an operation CPU through an output terminal, the signal output terminal of the operation CPU is respectively connected with UlN2803 driver modules through wires, the output ends of the ULN2803 driver modules are connected with operation relays, normally closed contacts on the operation relays are connected with a loop of an AC contact voltage coil in the electrical apparatus control cabinet, and the signal output terminals of the electrical apparatus control cabinet are connected with the electric motors. The invention has the advantages of high sensitivity, long service life, convenient installation, safe and reliable use, convenient maintenance, and the like.

Description

Technical field: [0001] The invention is particularly applicable to a wired monitoring multi-protection controller for an electric hoist when a CD / MD type electric hoist lifts a heavy object and is obliquely pulled. Background technique: [0002] The current electric hoist has no anti-cable pull control device. When the rise exceeds the limit, the mechanical device drives the switch action to perform power-off processing. There is a delay, the control accuracy is not high, easy to wear, malfunction, and the service life is short. The contactor adhesion is not controlled by the protective device. If any of the above situations occurs, the electric hoist and the motor will be damaged. Invention content: [0003] The task of the present invention is to propose a kind of electric hoist wired monitoring multi-function that can prevent cable pull, rise / fall beyond the limit, contact adhesion of the AC contactor in the control box, and can cut off the power locally or the whole m...

Claims

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Application Information

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IPC IPC(8): B66D1/54H02H5/00G08C19/00
Inventor 孙佩杰孙方博
Owner 孙佩杰