Crane gliding-proof hook control device

A technology for control devices and cranes, applied in cranes, safety devices, transportation and packaging, etc., can solve the problems of poor braking effect, accidental slip hooks, slip hooks, etc., and achieve the effect of reasonable design concept and good protection effect

Inactive Publication Date: 2008-06-04
蔡秀山
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of brake generally adopts frictional braking. When the weight of the lifting object is large, its braking effect is poor, and the phenomenon of hook slipping will still occur.
And in the long-term work, due to the mechanical failure of the brake, the occasional hook slip occurs from time to time
[0003] The control part of many such devices is relatively simple, and it is difficult to distinguish when the crane suspension is started, the hook drops slightly and then rises normally, and the slight drop is regarded as a stall state for protection

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 gliding-proof hook control device
  • Crane gliding-proof hook control device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] As shown in Figure 1, on the basis of the crane control cabinet, an executive circuit, a programmable controller, and a master controller with a signal interface are added; the programmable controller is connected to the executive circuit, and the executive circuit is connected to the motor respectively. Three-phase power switch, rotor short-circuit switch, DC input switch and brake action switch on the transmission shaft; the programmable controller is connected with the switch signal of the master controller, and the speed signal acquisition device set on the crane transmission shaft is connected to the programmable On the program controller, the programmable controller is also connected with a display, and the CPU in the programmable controller stores a program for comparing the time and speed signals collected by the speed signal acquisition device with the initial setting parameters; the controller There is a parameter input device on it.

[0018] As shown in Figur...

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

A crane anti-slipping control device which can prevent a heavy project from descending when the motor starting moment becomes small due to electricity or overweight. The invention is connected with the controller of the crane, and a rotating speed collecting device, an executive circuit, a programmable controller, a main order controller with signal interface are arranged on the crane. The CPU inside the programmable controller is stored with the signal of the move direction of the motor collected by the rotating speed signal collecting device, the program comparing rotating speed signal with the initial setting parameter, the program converting the rotating speed signal into travel signal and the comparative program. The invention collects the rotating speed data through a signal collector arranged on the transmission part and inputs the data into the programmable controller to compare with the data set in the controller. The system works normally when the rotating speed data matches the comparing condition; when the rotating speed data exceeds the set data, the order of the programmable controller executes the motion of the electro circuit so as to protect the whole machine.

Description

technical field [0001] The invention relates to a control device for the stall safety protection of a crane, in particular to an anti-slip hook control device for a crane which can prevent the starting torque of a motor from becoming small due to electrical or overweight reasons, thereby causing heavy objects to fall during hoisting. Background technique [0002] At present, during the working process of the crane, sometimes the phenomenon of slipping the hook when the starting moment is reduced due to electrical or overweight reasons occurs when the crane is hoisted or the heavy object falls during the hoisting process. Lifting objects and equipment will be damaged, and personal injury accidents may also occur. In the patent application published by the State Intellectual Property Office, the application number is 03227441.6, and the name is "crane stall protection device", which introduces a technical solution for setting a protector on the transmission shaft of the crane ...

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 Applications(China)
IPC IPC(8): B66C15/00B66C23/88
Inventor 蔡秀山李锦云
Owner 蔡秀山
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