Crane safety mechanism control system

A technology of safety mechanism and control system, applied in safety devices, load hanging components, transportation and packaging, etc., can solve the problems of unmoving the operating lever, high cost and high failure rate, and achieve sensitive action, easy operation and low cost. low cost effect

Inactive Publication Date: 2010-09-15
CHINA FIRST METALLURGICAL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this control method is that frequent refueling and maintenance are required, and the steel wire rope is eroded by rain in the open air, and it is easy to rust and die in the casing, resulting in the phenomenon that the operating lever cannot be moved and the steel wire rope is broken, so the failure rate is high.
[0005] The hydraulic control method drives the actuator through the pressure source of the auxiliary oil pump, and the actuator drives the pawl to realize the opening and closing action. This method requires special accessories and auxiliary devices. The control method has complicated technology, high cost, and is not easy to transform old equipment. Realization and other shortcomings

Method used

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  • Crane safety mechanism control system
  • Crane safety mechanism control system
  • Crane safety mechanism control system

Examples

Experimental program
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Embodiment Construction

[0021] figure 1 It is a physical wiring diagram of an embodiment of the present invention, and this embodiment is a crawler crane. Unscrew the plastic ball head 2 on the top of the operating rod 1. The plastic ball head 2 includes a hollow abdominal cavity 16, which can accommodate a small button switch 4. Uncover the sealed aluminum plate 3 on the top of the ball head, and drill a small hole on the sealed aluminum plate 3. , Fix the button switch 4 on the aluminum plate. Then the button switch 4 lower half is contained in the hollow abdominal cavity 16, drills an aperture at the plastic ball head 2 side and communicates with the ball head abdominal cavity as the lead-out line passage 15. One contact of the push button switch 4 is connected with the lead wire of the push button switch, and the other contact is grounded. Re-fix the sealing aluminum plate 3 on the plastic ball head 2 with glue.

[0022] A fixed point is welded on the crane structure below the pawl 9, and the ...

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PUM

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Abstract

The invention provides a crane safety mechanism control system. The system is arranged on a crane in an electric control mode of a pawl, and the pawl is pulled by controlling an electromagnet in the system so as to fulfill the aim of achieving safety protection on the crane. The system has the advantages that: the aim of achieving safety protection on the crane is fulfilled; improvements are made on used equipment, so the cost is low; and the system is simple and convenient to operate and has sensitive action after modification.

Description

technical field [0001] The invention relates to a crane safety protection mechanism. Background technique [0002] In order to prevent safety accidents, a set of ratchet and pawl mechanisms are usually installed on the hoisting drum for protection of the hoisting mechanism of the crane. The hoisting drum is mechanically locked to avoid vicious safety accidents such as falling poles and hooks. Generally, the driver controls the action of the pawl through the operating lever in the cab to realize the opening and closing state of the ratchet and the pawl. When the crane is working, open the pawl so that the hoist can rotate freely; when the crane is in the state of action holding or parking, the ratchet and pawl are combined to lock the action of the drop bar or drop hook to achieve the purpose of safety protection. [0003] Existing pawl control methods usually have two kinds of control methods: mechanical and hydraulic. [0004] The mechanical control method is relatively ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C13/22B66C15/00
Inventor 吴林华王鸿滨谢帮鹏
Owner CHINA FIRST METALLURGICAL GROUP
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