Steering crane control method

Abstract

The invention provides a control method of a derrick crane. The derrick crane comprises a derrick foundation and a main derrick, wherein the main derrick is fixedly pivoted to the derrick foundation. The control method comprises an amplitude control procedure for controlling the inclined amplitude of the main derrick and a left and right rotating control procedure for controlling the horizontal deflecting direction of the main derrick. According to the control method of the derrick crane, the derrick crane which is installed on a tower crane frame can be controlled, and an attached device can be removed by using a safe efficient convenient method when the attached device needs to be removed above the ground, so that the amplitude of the derrick crane which is installed on a tower crane can be freely changed, the derrick crane can be freely rotated, other hoisting equipment is not needed when the attached device is removed above the ground, and the operation is simple, convenient, safe and efficient. When a construction bridge is opened to traffic, the attached device can be automatically removed without road closure, and safe driving is not influenced.

Description

technical field [0001] The present invention relates to the field of building construction, in particular, the present invention relates to a control method of a pole crane. Background technique [0002] In road construction and bridge construction, especially in the construction of cable-stayed bridges, suspension bridges and high piers, tower cranes are often used for hoisting construction. After the construction is completed, there are often difficulties in removing the attachment of the tower crane due to the lack of lifting equipment to help remove the attachment device of the tower crane in the later stage. [0003] Especially during the construction of the cable towers of cable-stayed bridges, the boom cannot be rotated at a large angle due to the influence of the cables, and it is difficult to complete the self-removal of the attachment device. Therefore, external lifting equipment (such as a hoist, etc.) is usually required for removal. The hoist needs to be fixed ...

AI Technical Summary

Problems solved by technology

The hoist needs to be fixed on the top of the cable tower and the bridge deck, with many anchor points, low efficiency, poor safety, and it is difficult to disassemble the hoist later.

And in the process of removing the attachment with the help of external lifting equipment, the road needs to be closed to avoid accidents and affect vehicle traffic

[0004] Therefore, the removal work of the current tower crane attachment device is difficult, the cost is high, the efficacy is low, the operation is cumbersome and the safety is poor

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