Mold Lifting Ring with Pivoting Stirrup and Temporary Locking
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Solution Overview
Problem
Existing lifting rings for handling molds in the manufacturing industry pose safety risks due to unintentional locking and cluttered space, as they can remain locked if not properly disengaged and project above the load surface, leading to potential accidents and inefficiencies.
Innovation Solution
A lifting ring design featuring a stirrup with a screw fastening member and a temporary locking tool that includes projecting elements for secure engagement and disengagement, allowing the stirrup to pivot and lie flat, eliminating the need for external tools for screwing and ensuring safe handling by automatically unlocking during lifting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the temporary locking tool is used to link the stirrup and fixing member in rotation, then the lifting ring can securely prevent unintentional lifting, but the stirring ring remains protruding above the load surface and takes up space
Solution Approach 1:
The stirrup is made movable relative to the fixing member, allowing it to pivot between a protruding position (when locked) and a retracted position (when unlocked). This dynamic configuration enables the stirrup to occupy minimal space when not in use while maintaining security when locked.
Solution Approach 2:
The stirrup pivots around a second axis perpendicular to the first axis, transitioning from a three-dimensional protruding state to a two-dimensional flat state against the load surface. This dimensional transformation reduces space occupation while maintaining the locking function.
2Area of stationary object
If the lifting ring is designed to lie flat when unlocked, then space is reduced, but the temporary locking tool requires additional components for secure engagement
Solution Approach 1:
The locking and unlocking functions are integrated into the stirrup itself through the protruding elements that engage with the fixing member. This merging of functions eliminates the need for separate locking tools while maintaining secure engagement.
Solution Approach 2:
The stirrup serves its own locking and unlocking functions through the protruding elements that automatically engage or disengage from the fixing member based on the stirrup's position. This self-service mechanism reduces the need for external tools and simplifies the overall system.
3Device complexity
If external tools are used for screwing the fastening element, then the lifting ring structure can be simpler, but additional tools are required for secure attachment
Solution Approach 1:
The stirrup serves its own locking and unlocking functions through the protruding elements that automatically engage or disengage from the fixing member. This self-service mechanism reduces the need for external tools and simplifies the overall system.
Solution Approach 2:
The protruding elements serve multiple functions: they act as both locking features when engaged and as handling features when disengaged. This multi-functionality eliminates the need for separate tools while maintaining operational ease.
Data Source
Figure 1~2
Figure 3~5
AI summary
The invention relates to a lifting ring for handling a mold, comprising a stirrup (1) forming a hooking loop defining a passage (16) for receiving a lifting member, a screw-type fastening member (2) to which the stirrup (1) is connected, the fastening member (2) having a first axis (Z), and the stirrup (1) being mounted movable relative to the fastening member (2), and a temporary locking tool (30, 31). The lifting ring is notable in that the temporary locking tool (30, 31) comprises at least one element (30) projecting inward from the stirrup (1), in the vicinity of the passage (16), in a direction perpendicular to said first axis (Z), and at least one recess (31) formed in a head (20) comprising said fastening member (2), said recess (31) being adapted to receive said at least one projecting element (30).The stirrup is pivotally mounted on said fixing member (2) around a second axis (Z2) which is perpendicular to said first axis (Z) and it is movable in translation along a direction parallel to said first axis (Z).