Travelling Block Becket Support Bar and Sling Mechanism
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Solution Overview
Problem
Existing methods for temporarily supporting a travelling block becket during opening pose safety risks due to the potential for a pinch bar to fall out of the sling, leading to an overhead hazard for personnel.
Innovation Solution
A bar with a connection feature and a sling is used to securely support the becket, where the bar is placed against the support legs, and the sling is wrapped under the becket to connect a lifting cable, ensuring the becket is cradled and maintained in a controlled position during opening, with optional features like stops and magnets for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pinch bar is used to support the becket during opening, then the becket can be temporarily supported, but the pinch bar may fall out of the sling creating an overhead hazard
Solution Approach 1:
A bar member with a connection feature serves as an intermediary between the sling and the becket support system. The bar member is positioned against the support legs and connected to the sling, providing a stable interface that prevents the sling from disengaging while allowing controlled support of the becket during opening operations.
Solution Approach 2:
The bar member is pre-positioned against the support legs before the becket is opened. This preliminary positioning ensures that the bar member is already in place to prevent the sling from falling out, eliminating the need for continuous monitoring or adjustment during the critical opening phase.
2Adaptability or versatility
If the becket is opened to connect or disconnect equipment, then operational flexibility is improved, but the becket may fall open uncontrollably creating safety risks
Solution Approach 1:
The sling acts as an intermediary support mechanism between the opened becket and the lifting cable system. It provides continuous support during the transition state when the becket is opened, preventing uncontrolled falling while allowing the operational flexibility needed to connect or disconnect equipment.
Solution Approach 2:
The manual or mechanical control of the becket opening is supplemented by the sling-lifting cable system. This substitution provides a more reliable control mechanism that uses tension from the lifting cable to maintain controlled operation, replacing reliance on purely mechanical latch systems.
3Reliability
If a sling is used to support the becket, then the becket can be held in position, but the sling may disengage from the support structure
Solution Approach 1:
The bar member serves as a stable intermediary structure that connects the sling to the support legs. This intermediate element provides a fixed reference point and structural support that prevents the sling from disengaging, while still allowing the sling to maintain its support function for the becket.
Solution Approach 2:
The bar member is pre-positioned and secured against the support legs before the sling is tensioned. This preliminary action ensures that the sling has a stable, pre-established connection point that cannot shift or disengage during the becket opening operation, maintaining both support and positioning stability.
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
The solution provides improved safety by preventing the becket from falling open uncontrollably and reduces the risk of overhead hazards, allowing for controlled and secure operation of the travelling block.
Implementation Method 1
the becket is carefully lowered in the open position in the controlled embrace of the sling
Implementation Method 2
tension exerted on the sling by the lifting cable snugly cradles an underside of the becket with the sling
Implementation Method 3
Magnetic material is carried on the bar to magnetically attract the bar to the first pair of support legs
Data Source
AI summary
A device for supporting a becket of a travelling block features a bar whose longitudinal dimension exceeds a distance between a first pair of support legs by which one end of the becket is pivotally supported on the travelling block. The bar is abutted against the first support legs from a side thereof facing a second pair of support legs, to which the second end of the becket is coupled when the becket is closed. A sling is connected to the bar via a connection lies intermediately of the bar's ends so as to reside between the first support legs. The sling is wrapped under the becket to an opposing side of the second pair of support legs, where a lifting cable is connected to the sling. Under tension from the lifting cable, the sling snugly cradles an underside of the becket to support same during opening of the becket.