Dockside Crane Boom Extension Using Self-Service Trolley
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Solution Overview
Problem
Existing boom extension solutions for dockside container cranes require large equipment and lengthy construction periods, leading to high costs and inefficiencies.
Innovation Solution
A boom extension device for dockside container cranes, comprising an extension trolley tool, first and second support frame trolleys, and process supports, which allows for the extension of the boom without moving the crane, reducing the need for large equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If large lifting equipment (truck crane or crawler crane) is used to extend the boom, then the boom extension can be achieved, but the construction cost increases and the construction period lengthens
Solution Approach 1:
The quay crane uses its own hoisting mechanism to lift and position the boom sections during extension, eliminating the need for external heavy lifting equipment. The crane's existing lifting capacity is utilized to service the extension operation, reducing both cost and time.
Solution Approach 2:
The boom is divided into multiple sections (front boom section, rear boom section, and extension section) that can be assembled incrementally. This segmentation allows the extension to be performed in manageable stages using the crane's own capabilities rather than requiring single-lift heavy equipment.
2Manufacturing precision
If the quay crane is pulled to the back and the front boom is put downwards by large lifting equipment, then the boom extension can be achieved, but the site requirements increase and the construction period lengthens
Solution Approach 1:
The extension operation is performed using the quay crane's own hoisting mechanism rather than requiring external lifting equipment, thereby reducing site requirements and eliminating the need for additional heavy machinery access and setup space.
Solution Approach 2:
The boom sections are positioned and adjusted dynamically during the extension process using the crane's hoisting mechanism, allowing flexible adaptation to site conditions without requiring predetermined heavy equipment positioning.
3Manufacturing precision
If the front boom is put to the ground by a floating crane for extension, then the boom extension can be achieved, but the construction cost increases
Solution Approach 1:
The quay crane utilizes its own hoisting mechanism to perform the extension operation, eliminating the need to hire external floating crane services and thereby reducing construction costs.
Solution Approach 2:
The quay crane's hoisting mechanism is used for multiple purposes: both for its normal container handling operations and for the boom extension operation, maximizing the utility of existing equipment and avoiding additional equipment costs.
Data Source
AI summary
A boom extension device for a dockside container crane. A boom comprises a rear boom section (11) and a front boom section (12). The extension device comprises: an extension trolley tool (2) which is disposed below the rear boom section (11) and the front boom section (12) during an extension operation, and which comprises a wheel set (21), a trolley frame (22), a construction platform (23), and a movement track (24) disposed on the construction platform; a fits support frame trolley (31) disposed on the movement track (24) and used to carry a boom extension section (41) and guide the boom extension section (41) to move in a first direction; and a second support frame trolley (32) disposed on the movement track (24) and used to carry the front boom section (12) and guide the front boom section (12) to move in a second direction perpendicular to the first direction in a first plane. Further included is an extension method for a boom of a dockside container crane. The invention reduces usage of heavy-duty equipment.