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

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....

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

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