Stable lifting system of tower crane

A tower crane and hoisting system technology, which is applied in the directions of cranes, load hoisting elements, transportation and packaging, etc., can solve problems such as difficulty in grasping the hoisting speed, jib shaking structure, safety accidents, etc., and achieve reliable performance, The effect of reducing potential safety hazards and being less prone to false triggering

Active Publication Date: 2021-07-02
ZHEJIANG HUBA CONSTR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] According to the electromagnetic torque slip characteristic curve, if the speed changes suddenly, it will bring about a sudden change in the motor torque. In the use of tower cranes, heavy objects should not be lifted directly at high speed before they leave the ground to avoid sudden changes in the torque of the hoisting mechanism. It brings a large impact, which may cause severe shaking of the boom and damage the structure, or cause serious safety accidents. It is extremely difficult to grasp the timing of increasing the lifting speed, and there are potential safety hazards. If the driver is inexperienced, it is easy to cause a series of operational problems

Method used

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  • Stable lifting system of tower crane
  • Stable lifting system of tower crane
  • Stable lifting system of tower crane

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the examples, but the protection scope of the present invention is not limited thereto.

[0029] The invention relates to a stable lifting system of a tower crane, and the system is arranged in cooperation with the tower crane;

[0030] The system includes:

[0031] One or more sensors for obtaining real-time status signals of the tower crane;

[0032] The sensor includes a distance sensor arranged in cooperation with the jib beam of the tower crane, the distance sensor is arranged facing the horizontal ground; the sensor is arranged in cooperation with the controller.

[0033] An information collection unit, used to collect the working status signal of the tower crane;

[0034] The ground-lift condition in step 1 includes data fed back from sensors and information collection units, and the tower crane is in a normal state and has not yet been hoisted.

[0035] a drive unit, used to d...

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Abstract

The invention relates to a stable lifting system of a tower crane. The stable lifting system of the tower crane is matched with the tower crane, and is characterized in that one or more sensors are used for acquiring real-time state signals of the tower crane, an information acquisition unit is used for acquiring working state signals of the tower crane, and a driving unit is used for driving the tower crane to lift; a controller is matched with the sensors and the information acquisition unit to obtain the real-time state signals and the working state signals and output the signals to the driving unit. The stable lifting system of the tower crane is simple, practical and reliable in performance, can automatically decelerate until a steel wire rope is tensioned and then leaves the ground when the tower crane rapidly lifts a heavy object, is high in real-time performance due to the fact that the working state and the torque of a lifting motor are collected through a frequency converter, can rapidly control the lifting motor to start and stop through logic analysis and judgment of a programmable controller and is not prone to false triggering, and the potential safety hazard of the tower crane in the lifting stage is reduced.

Description

technical field [0001] The invention relates to cranes; the technical field of load-hanging components or devices used for cranes, winches, winches or pulleys, in particular to a stable lifting system for tower cranes. Background technique [0002] Tower cranes, also known as tower cranes, are the most commonly used lifting equipment on construction sites. They are lifted step by step with standard sections, and are used to lift construction materials such as steel bars, corrugated wood, concrete, and steel pipes. Tower crane is an indispensable equipment on the construction site. [0003] According to the electromagnetic torque slip characteristic curve, if the speed changes suddenly, it will bring about a sudden change in the motor torque. In the use of tower cranes, heavy objects should not be lifted directly at high speed before they leave the ground to avoid sudden changes in the torque of the hoisting mechanism. It brings a large impact, which may cause severe shaking...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/88B66C13/48B66C13/16B66C13/22
CPCB66C23/88B66C13/48B66C13/16B66C13/22Y02B50/00
Inventor 朱海知陈鑫燚苏佳辉唐春容陈劼东冯泽昊
Owner ZHEJIANG HUBA CONSTR MACHINERY
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