Lifting Device Stop Means for Heavy Load Positioning
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Solution Overview
Problem
Existing load attachment systems lack the ability to efficiently position and align heavy loads, such as building components, due to limitations in power transmission and load management, particularly when the primary power transmission unit is out of operation or overloaded.
Innovation Solution
A stop system with a train unit for power transmission between the load and the gauge, and a security arrangement that bridges the train unit to ensure continuous power transmission, even if the train unit is out of operation or overloaded. The system allows for adjustable length of the stop to precisely position and align loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the traction unit is used to transmit force and change length, then the lifting device can position and align loads, but the system becomes vulnerable when the traction unit is out of operation or overloaded
Solution Approach 1:
The patent implements a securing arrangement that bridges the traction unit to provide backup force transmission capability. This securing arrangement acts as a pre-prepared safety mechanism that activates when the traction unit fails or becomes overloaded, ensuring continuous load support and preventing catastrophic failure. The securing arrangement includes mechanical components that engage automatically or can be manually activated to transfer load-bearing function from the failed traction unit to the securing structure.
2Reliability
If the securing arrangement bridges the traction unit, then force transmission is ensured during failure, but the device complexity increases
Solution Approach 1:
The securing arrangement serves as an intermediary mechanical structure that connects the load to the support means independently of the traction unit. This intermediary system provides an alternative force transmission path that simplifies the overall reliability architecture by creating functional redundancy without requiring complex control systems or multiple active propulsion units.
Solution Approach 2:
The securing arrangement is designed to be a passive, always-available backup that remains dormant during normal operation (when the traction unit is functional) and activates only when needed. This approach minimizes the impact on device complexity during normal operation while providing critical reliability benefits during failure conditions.
3Force
If the traction unit is hydraulically or electrically driven for high loads, then the lifting capacity increases, but the system becomes vulnerable to power supply failure
Solution Approach 1:
The securing arrangement provides a mechanical backup system that is independent of hydraulic or electrical power supplies. This passive mechanical structure ensures that even if power supply fails, the load can still be supported and positioned using manual operation of the securing arrangement, preventing complete system failure and enabling safe load recovery.
Data Source
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AI summary
Lifting device (1) for attaching a load (2) to a lifting device (3) with at least one tensioning unit (4) which serves to transmit force between the load (2) and the lifting device (3) and by means of which the length (La) of the lifting device (1) can be varied, wherein the lifting device (1) has at least one locking arrangement (5) which is configured to bridge the tensioning unit (4) in order to ensure the force transmission between the load (2) and the lifting device (3) even if this can no longer be ensured by means of the tensioning unit (4) due to the mass of the load (2) or a technical defect of the tensioning unit (4). Furthermore, the invention relates to a load-bearing device (16) for receiving a load (2) with a lifting device (3) and at least one corresponding lifting device (1) by means of which the load (2) can be attached to the lifting device (3).