Crane jib recovery method and jib recovery device

Abstract

The invention provides a crane jib recovery method and a jib recovery device. The crane jib recovery method includes: hinge the first joint on the jib to the first support plate on the main arm, and then remove the The fork shaft of the sub-arm yoke and the main arm are hinged, and the sub-arm can rotate around the hinge shaft of the first joint and the first support plate in the plane where the main arm is located; the second joint on the sub-arm is connected with the The actuator on the crane; it drives the actuator to move, so that the flexible shaft pulls the auxiliary arm to rotate around the hinge axis between the first joint and the first support plate, so that the auxiliary arm can be recovered to the second support plate on the main arm, so that the auxiliary arm placed parallel to the main arm. The present invention provides a method and device which can be recovered through the action of the executive part on the crane and the auxiliary arm driven by the flexible shaft. The structure is simple, the installation is easy, and the operation is simple and convenient. Reduce the overall cost and maintenance cost of the equipment, and improve the market competitiveness of the equipment.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a crane jib recovery method and a jib recovery device. Background technique [0002] At present, the boom system of the crane includes the main boom and the auxiliary boom. The setting of the auxiliary arm can compensate the operating height of the main arm and expand the operating range of the main arm. The assembly connection of the auxiliary arm and the main arm is usually hinged by the four joints at the end of the auxiliary arm and the four joint holes at the head of the main arm through the joint shaft. When the auxiliary arm is not working, the auxiliary arm is folded on the side of the main arm , when the auxiliary arm is required to work, the auxiliary arm is deployed on the arm head installed on the main arm. [0003] When installing the auxiliary arm, usually first align the proximal fork with the proximal joint hole, insert the proximal fork shaft, and then manu...

AI Technical Summary

Problems solved by technology

[0007] 1. The driving mechanisms in the jib recovery device in the related art are all independent of the crane’s driving structure, such as oil cylinders, cylinders, etc., resulting in increased equipment costs, while increasing the failure rate of equipment, increasing equipment maintenance costs, and reducing market competition. force;

[0008] 2. The articulated structure is less flexible than other flexible shaft structures, which may cause faults such as jamming when the jib is recovered, making it difficult to recover the jib

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