Mobile Crane Support Device Segmented Sliding Beam Box
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Solution Overview
Problem
Mobile cranes face challenges in meeting road traffic weight limits due to high total weight, requiring disassembly of components for transport, which complicates the installation process of support devices with small bearing clearances and increased equipment costs.
Innovation Solution
A mobile crane design featuring a two-part sliding beam box with a fixed and detachable partial sliding beam box, allowing for disassembly of the detachable partial sliding beam box for road transport, simplifying the installation process by positioning all support points in the detachable partial sliding beam box and using an extension cylinder with modified ejection movement for easier assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sliding beam is movably supported in the sliding beam box with small bearing clearances to avoid tilting during telescoping, then the load-bearing capacity and stability are improved, but the threading of the sliding beam into the sliding beam box at the installation point becomes more difficult
Solution Approach 1:
The sliding beam box is divided into two separate parts: a fixed partial sliding beam box attached to the vehicle framework and a detachable partial sliding beam box that can be removed for transport. This segmentation allows the support points to be positioned in the detachable part while enabling easier installation and disassembly by separating the threading function from the stabilizing function.
2Strength
If the sliding beam box is designed as a single integrated unit to maintain structural integrity, then the load-bearing capacity is improved, but the equipment expense and complexity increase due to the need for complete disassembly
Solution Approach 1:
The sliding beam box is segmented into a fixed partial box that remains on the vehicle framework and a detachable partial box that can be removed. This allows the structural integrity to be maintained in the fixed part while reducing equipment complexity and expense by enabling selective disassembly of only the necessary components for transport.
Solution Approach 2:
The sliding beam box transitions from a static integrated unit to a dynamic configurable structure where the detachable partial box can be attached or removed based on operational requirements, allowing the system to adapt between full load-bearing capacity mode and reduced complexity transport mode.
3Adaptability or versatility
If the sliding beam box is disassembled for road transport to meet maximum axle load limits, then the compliance with road traffic regulations is improved, but the installation process becomes more complex and time-consuming
Solution Approach 1:
By segmenting the sliding beam box into fixed and detachable parts, the system enables quick compliance with road traffic regulations through simple removal of the detachable partial box, significantly reducing the time and complexity compared to complete disassembly while still achieving the required weight reduction.
Data Source
AI summary
This invention relates to a mobile crane with a vehicle framework and at least one support device positioned on the vehicle framework, whereby the at least one support device comprises a sliding beam box and at least one sliding beam supported therein in a telescopable manner, whereby the sliding beam box consists of a fixed partial sliding beam box and of a detachable partial sliding beam box, and whereby the fixed partial sliding beam box is firmly fixed to the mobile crane, particularly on the vehicle framework, and the detachable partial sliding beam box is detachably connected or connectable with the fixed partial sliding beam box.