Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Crane with brake failure protection device and brake failure protection method

A technology of failure protection and brake, applied in the direction of hoisting device, clockwork mechanism, etc., can solve the problems of low reliability and complex structure of mechanical device, so as to increase the volume and cost of the system, improve the safety factor, improve the economy and The effect of social benefit

Inactive Publication Date: 2012-05-09
HARBIN INST OF TECH
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the structure of the current mechanical device for preventing the hook of the crane is too complicated and the reliability is not high, and to provide a crane with a brake failure protection device and a brake failure protection method

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
  • Crane with brake failure protection device and brake failure protection method
  • Crane with brake failure protection device and brake failure protection method
  • Crane with brake failure protection device and brake failure protection method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0021] Specific implementation mode one: the following combination Figure 1 to Figure 3 Describe this embodiment. This embodiment includes a main controller module 1, a frequency converter 2, a hoisting mechanism induction motor 3, a photoelectric encoder 4, a brake 5, a mechanical transmission reduction device 6, a reel 7 and a hook 8. The main The input and output terminals of the controller module 1 are connected to the input and output terminals of the frequency converter 2, the output terminal of the frequency converter 2 is connected to the input terminal of the induction motor 3 of the hoisting mechanism, and a photoelectric encoder is installed at one end of the shaft of the induction motor 3 of the hoisting mechanism 4. The other end of the shaft of the hoisting mechanism induction motor 3 is connected to the input shaft of the mechanical transmission reduction device 6, and the shaft of the hoisting mechanism induction motor 3 between the hoisting mechanism induction...

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

The invention relates to a crane with a brake failure protection device and a brake failure protection method, belonging to the filed of electromechanical integration and solving the problems of over complicated structure and low reliability of a traditional mechanical device for preventing the brake slip of the crane. The crane with the brake failure protection device comprises a main controller, a transducer, a lifting mechanism induction motor, a photoelectric encoder, a brake, a speed reducer of a mechanical transmission type, a drum, a hook, a signal converter and a high-speed interface module. Whether a lifting mechanism moves or not is detected by the photoelectric encoder when the lifting mechanism is braked by the brake, the brake fails if a signal is output by the photoelectric encoder, and the transducer is controlled by the main controller module to work and drive the lifting mechanism induction motor to generate electromagnetic torque for realizing electromagnetic brake so that a load is slowly put in a suitable position and a brake failure alarm signal is sent. The invention is used for the failure protection of the crane brake.

Description

technical field [0001] The invention relates to a crane with a brake failure protection device and a brake failure protection method, belonging to the field of electromechanical integration. Background technique [0002] During the actual operation of the crane, when the heavy object is hovering in the air, the brake is activated. If the brake fails, the hook slip phenomenon will occur, causing the heavy object to drag the lifting hook down, which seriously affects the reliable operation of the system. It also threatens the safety of on-site personnel. [0003] The brakes of current cranes mostly adopt mechanical structure, and as the final protection means to prevent hook slipping, the problem of hook slipping caused by brake failure is not considered. Some technical solutions use a mechanical protector on the transmission shaft of the crane to prevent the hook from slipping, but it is necessary to add a complicated mechanical device, and this kind of brake generally uses ...

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): B66D1/54B66D5/30
Inventor 孙力修永文吴凤江孙光亚祝庆军
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com