Tower crane and hoisting safety control method, device and system thereof

A safety control and tower crane technology, applied in the direction of cranes, etc., can solve problems such as boom deformation, casualties, signal interference, etc., and achieve the effect of avoiding hook top-rushing accidents.

Active Publication Date: 2015-11-18
ZOOMLION HEAVY IND CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual operation, due to the failure of the mechanical height limiter, signal interference, short-circuiting and dismantling, the hook often rushes to the top, resulting in wire rope breakage, trolley damage, boom deformation and hook falling off. Accidents, causing heavy property damage and casualties

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
  • Tower crane and hoisting safety control method, device and system thereof
  • Tower crane and hoisting safety control method, device and system thereof
  • Tower crane and hoisting safety control method, device and system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] To enable those skilled in the art to understand the present invention more clearly, a more detailed description will be given below in conjunction with the accompanying drawings, but these descriptions are not used to limit the protection scope of the present invention.

[0020] The invention adopts an analog signal output height limiter. The controller collects and processes the analog signal output by the height limiter, and the analog signal has stability and anti-interference ability. The analog detection signal of the height limiter is a linear change area (such as 0-5V). When the hoisting drum rewinds and unwinds the wire rope, it will drive the height limiter to work. The height limiter controls the position and number of turns of the drum. Detect and output the changed analog signal.

[0021] Such as figure 1 As shown, it is a flowchart of a tower crane lifting safety control method in an embodiment of the present invention. After the tower crane is started, it rec...

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 discloses a tower crane, as well as a hoisting safety control method, equipment and system thereof. The method comprises the following steps: receiving a tower crane hoisting gear signal and an analog quantity signal of a height limitator; judging that the height limitator works normally if the analog quantity signal of the height limitator changes in a preset time after the tower crane hoisting gear signal is received, so as to control a tower crane hoisting mechanism to continue working normally; judging that the height limitator works abnormally if the analog quantity signal of the height limitator does not change in the preset time after the tower crane hoisting gear signal is received, so as to control the tower crane hoisting mechanism to stop working. According to the invention, due to the adoption of the height limitator outputting the analog quantity signal, lifting hook rushing to top accidents caused by failure of the limitator can be avoided.

Description

Technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a tower crane and its lifting safety control method, equipment and system. Background technique [0002] Currently, in the tower crane lifting control system, mechanical height limiters are mainly used to set limit points to limit the lifting height of the hook. In actual operation, the hook topping phenomenon often occurs due to the failure of the mechanical height limiter, signal interference, short-circuiting and removal, causing the wire rope to break, the trolley is damaged, the boom is deformed, and the hook falls off. The accident caused heavy property losses and casualties. Summary of the invention [0003] The technical problem to be solved by the present invention is to provide a tower crane and its lifting safety control method, equipment and system in view of the defects of the prior art, which has the function of preventing failure of the stopper and fully g...

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): B66C23/90
Inventor 衣磊
Owner ZOOMLION HEAVY IND CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap