Crane, crane assembly method and disassembly method

JP7596705B2Active Publication Date: 2024-12-10KOBELCO CONSTR MASCH CO LTD
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Patent Information

Application Number
JP2020175373
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2020-10-19
Publication Date
2024-12-10
Estimated Expiration
2040-10-19

AI Technical Summary

Technical Problem

The burden on workers is significant when installing and removing the rear jib pendant rope in cranes due to the weight and tension of the rope, particularly when attaching and detaching the end of the rope to and from the boom rope connection point.

Method used

The crane design includes a jib posture holding device with a jib mast that can be placed in a relaxed position, allowing ropes to be connected without pulling, and a rope connection point positioned closer to the boom tip and jib base, reducing the effort required for installation and removal of support ropes.

Benefits of technology

This configuration reduces the physical burden on workers by enabling easier installation and removal of support ropes at lower heights and with reduced tension, enhancing operational efficiency.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To reduce the burden on a worker required for installing and removing a jib side support rope and a boom side support rope.SOLUTION: A crane 100 comprises a jib posture holding device 8 for holding a jib 6 in a forward inclined posture with respect to a boom 5. The jib posture holding device 8 includes a jib mast 26 for holding a rope connection part 24 at a mounting position backwardly separated from a jib base end part 17 and a boom tip part 15 such that each of a jib side support rope 22 and a boom side support rope 23 is linearly stretched when the jib 6 takes the forward inclined posture. The jib mast 26 is configured to take a stretching mode at which the rope connection part 24 is held at the stretching position in a standing posture and a loosening allowable mode at which the rope connection part 24 is arranged at a loosening allowable position which is closer to the boom tip part 15 and the jib base end part 17 than the stretching position and allows the loosening of the jib side support rope 22 and the boom side support rope 23 .SELECTED DRAWING: Figure 2
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Citation Information

Patent Citations

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