Mobile Crane Winch Vertical Positioning for Transport Compliance
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Solution Overview
Problem
Mobile cranes face challenges in adhering to transport regulations regarding maximum permissible height and axle loads, and often require auxiliary cranes to prepare for use on construction sites.
Innovation Solution
The mobile crane is equipped with means for raising and lowering the winch, allowing it to be dismantled and reassembled independently, reducing height and weight during transport and enabling self-preparation on site without auxiliary cranes, using a pallet with adjustable receptacles and hydraulic cylinders for vertical movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the winch is positioned higher to route all hoisting ropes to the top of the jib in the working state, then the hoisting operation is improved, but the maximum permissible height during transport is exceeded
Solution Approach 1:
The winch is made movable between a raised operating position and a lowered transport position. The raising and lowering means enable the winch to be dynamically repositioned, allowing the crane to adapt its configuration between working state (winch raised for proper rope routing) and transport state (winch lowered to comply with height regulations).
Solution Approach 2:
The solution adds vertical movement capability to the winch positioning system. By introducing the dimension of vertical adjustment through raising and lowering means, the system can transition between different height configurations without compromising either operating effectiveness or transport compliance.
2Ease of operation
If the winch is positioned higher for proper rope routing, then the hoisting function is improved, but the axle loads exceed transport regulations
Solution Approach 1:
The winch positioning system is made dynamic, allowing the winch to be lowered during transport to redistribute weight and comply with axle load regulations. The raising and lowering means enable this weight redistribution by moving the winch between operational and transport configurations.
3Adaptability or versatility
If extensions and modifications are made to comply with transport regulations, then transport compliance is improved, but the need for auxiliary cranes increases device complexity
Solution Approach 1:
The mobile crane is equipped with self-contained raising and lowering means that enable it to independently adjust the winch position for transport compliance. This self-service capability eliminates the need for external auxiliary cranes to perform modifications, as the crane can autonomously transition between operating and transport configurations.
Solution Approach 2:
The raising and lowering means are pre-installed on the mobile crane, allowing it to perform necessary adjustments before transport. This preliminary preparation enables the crane to comply with transport regulations without requiring post-assembly modifications or auxiliary equipment at the construction site.
4Ease of operation
If the winch remains in operating position during transport, then operational readiness is improved, but height and weight regulations cannot be met
Solution Approach 1:
The winch positioning system is made dynamically adjustable, allowing the winch to be rapidly repositioned between raised (operational) and lowered (transport) states. This dynamic capability enables the crane to maintain operational readiness while complying with transport height regulations through quick configuration changes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows the mobile crane to comply with transport regulations and independently prepare for use on construction sites, reducing the need for auxiliary cranes and maintaining operational readiness while minimizing height and weight during transport.
Implementation Method 1
The means for raising and/or lowering the winch have a pallet (10), which can be moved in the vertical direction by lifting means (11)
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3
AI summary
The present invention relates to a mobile crane with a winch (1) arranged on the superstructure, in particular a lifting winch, wherein the mobile crane has means (10, 11) for raising and/or lowering the winch (1).