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Jacking anti-tipping alarm system of self-elevating tower crane

A technology for tower cranes and alarm systems, applied to cranes, load hanging components, safety devices, etc., can solve problems such as frequent alarms, inability to effectively operate tower cranes, and failure to reach, and achieve the effect of avoiding dangerous operations

Pending Publication Date: 2021-02-26
JIANGLU MACHINERY & ELECTRONICS GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the self-elevating tower crane is performing jacking and jointing operations, the main operators are concentrated in the climbing sleeve. If the upper structure is unbalanced during the jacking process, the tower crane cannot be effectively operated in the tower crane cab. Jacking operators cannot accurately grasp the balance state of the upper structure, which is an important reason for the accident of tower crane tipping
[0003] The existing tower crane tipping warning system is used to monitor the inclination of the tower body when the tower crane is working, and then feed back the alarm information to the tower crane cab. This type of tipping warning system has many deficiencies in actual use. First, , the probability of the tipping accident of the tower crane in the process of jacking up and adding joints is much greater than the probability of tipping over during normal operation; secondly, the reasonable inclination of the tower body when the tower crane is hoisted is much greater than that required for jacking and adding joints No-load inclination, if the alarm threshold is set according to the inclination during work, it will not meet the requirements of the jacking tilt exceeding the standard alarm, if the alarm threshold is set according to the inclination during jacking and adding knots, it will cause frequent alarms during work; During the operation of lifting and adding sections, operations such as manipulating the jacking pump station for telescopic jacking, introducing the tower section into the casing for installation, etc. are all concentrated in the climbing casing. If excessive tilt occurs, the tower crane driver in the cab will get Even if the alarm information cannot be effectively operated in time to avoid tipping, there is also a type of tower crane tipping warning system that judges whether the tilt exceeds the standard through the torque signal of the torque limiter during jacking and knotting, and feeds the alarm information back to the cab. The moment limiter reflects the moment change by monitoring the deformation of the steel structure on the upper part of the tower crane due to the hoisting of the tower crane, and the danger of tipping during jacking and adding joints occurs when the upper part of the tower body and the connection part of the tower body are excessively tilted, so This type of anti-rollover alarm device has limited practical effect

Method used

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  • Jacking anti-tipping alarm system of self-elevating tower crane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Such as figure 1 As shown, a self-elevating tower crane jacking anti-tipping alarm system includes an inclination sensor, a working power supply, a voice announcer, and a jacking pump station. The working power supply is associated with the power supply line of the jacking pump station, and the signal output line is connected to The inclination sensor is installed on the slewing tower on the upper part of the tower crane, and is electrically connected with the jacking pump station, the voice announcer and the working power supply respectively.

[0017] The working principle of the present invention is as follows: the present invention installs an inclination sensor on the slewing tower at the upper part of the tower crane, and incorporates the signal output circuit of the inclination sensor into the alarm circuit of the tower crane. Detect the verticality of the upper part of the tower crane during the jacking and knotting operation. When the verticality of the shaft ce...

Embodiment 2

[0020] On the basis of Embodiment 1, the inclination sensor adopts a relay output dual-axis inclination sensor with a resolution of 0.01°.

Embodiment 3

[0022] On the basis of Embodiment 1, the inclination sensor calculates the safe inclination angle according to the overturning moment when it is installed and disassembled, and uses a spirit level to calibrate and compare the inclination of the upper part of the tower with the horizontal plane.

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Abstract

The invention discloses a jacking anti-tipping alarm system of a self-elevating tower crane. The jacking anti-tipping alarm system is used for inclination early warning during jacking of the tower crane. The invention relates to the technical field of tower cranes. The jacking anti-tipping alarm system comprises an inclination angle sensor, a working power supply, a voice broadcaster and a jackingpump station, wherein the working power supply is connected with the jacking pump station through a power supply circuit, a signal output circuit is connected with the voice broadcaster, and the inclination angle sensor is mounted on a rotary tower body at the upper portion of the tower crane and is electrically connected with the jacking pump station, the voice broadcaster and the working powersupply respectively. In the jacking section adding operation process, when the upper structure of the tower crane is unbalanced to a certain degree, an alarm is given to a whole work site through sound, jacking operators can master the balance state of the upper portion of the tower crane in time, and tipping accidents are prevented.

Description

technical field [0001] A self-elevating tower crane jacking anti-overturning alarm system is used for early warning of tilting when the tower crane is jacking up. The invention relates to the technical field of tower cranes. Background technique [0002] When the self-elevating tower crane is performing jacking and jointing operations, the main operators are concentrated in the climbing sleeve. If the upper structure is unbalanced during the jacking process, the tower crane cannot be effectively operated in the tower crane cab. The jacking operators cannot accurately grasp the balance state of the upper structure, which is an important reason for the accident that causes the tower crane to overturn. [0003] The existing tower crane tipping warning system is used to monitor the inclination of the tower body when the tower crane is working, and then feed back the alarm information to the tower crane cab. This type of tipping warning system has many deficiencies in actual use....

Claims

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Application Information

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IPC IPC(8): B66C23/90B66C13/16B66C15/06B66C23/28
CPCB66C23/905B66C13/16B66C15/065B66C23/28
Inventor 张磊樊智明王一华何马飞王朝洋谷建雄
Owner JIANGLU MACHINERY & ELECTRONICS GROUP
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