Supercharge Your Innovation With Domain-Expert AI Agents!

A motor brake control system for a construction hoist

A construction hoist, motor holding brake technology, applied in the direction of the reduction device of DC motor, electric motor/converter plug, etc., can solve the problems of brake output voltage fluctuation and high cost

Active Publication Date: 2018-05-22
SHENZHEN INVT ELECTRIC
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a motor brake control system of a construction elevator to solve the problems in the prior art that the cost is high and the output voltage of the brake fluctuates with the grid voltage

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A motor brake control system for a construction hoist
  • A motor brake control system for a construction hoist
  • A motor brake control system for a construction hoist

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0044] The invention provides a motor brake control system of a construction elevator to solve the problems in the prior art that the cost is high and the output voltage of the brake fluctuates with the grid voltage.

[0045] Specifically, the motor brake control system of the construction elevator, such as figure 1 shown, including:

[0046] control unit 201;

[0047] A motor brake power supply 202 connected between the grid input terminal and the brake coi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

This application provides a motor brake control system for a construction elevator. When the voltage output from the grid input terminal fluctuates, the voltage sampling signal will fluctuate accordingly, but the control unit will obtain the conduction angle, and then generate and output a PWM control signal according to the conduction angle, and control the controllable rectification drive circuit to generate and output a rectification drive signal according to the PWM control signal, and then the controllable rectification circuit will be input by the power grid input The voltage is rectified to the preset brake output voltage according to the rectification drive signal and then output, so that the voltage output by the motor brake power supply will not fluctuate following the voltage input from the grid input terminal, thereby ensuring The safety brake and release of the brake motor of the construction elevator. At the same time, the motor lock control system of the construction hoist provided by the present application does not need a power frequency transformer, so the cost is reduced compared with the prior art.

Description

technical field [0001] The invention relates to the technical field of construction elevators, in particular to a motor brake control system of a construction elevator. Background technique [0002] During the operation of the construction elevator, when the frequency converter reports a fault, the manual shutdown occurs, or the main input AC power fails, the construction elevator needs to be stopped in time, that is, the brake motor of the construction elevator needs to be locked immediately . The brake motor is usually braked with a DC electromagnetic brake (ie, a brake coil), and the working principle of the DC electromagnetic brake is: when the DC electromagnetic brake obtains a certain voltage provided by the motor brake power supply ( For example, when the rated DC is 195V), the brake can be released, and the brake motor operates normally; when the DC electromagnetic brake loses power, the brake can be realized, and the brake motor stops running. [0003] In the prio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02P3/08
Inventor 罗云
Owner SHENZHEN INVT ELECTRIC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com