Rotating Hoist Ring with Temporary Locking Tool
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rotating rings for lifting loads require tools for clamping and unclamping, which can lead to safety risks if not properly managed, as the rotational connection can be retained inadvertently, restricting the ring's freedom of rotation during lifting operations.
Innovation Solution
A rotating lifting ring with a temporary locking tool that securely links the body and fixing member in a locked position, preventing the insertion of lifting accessories, and allows rotation when unlocked, ensuring the ring can freely rotate during lifting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a temporary locking tool is used to link the body and fixing member in rotation, then the ring can be easily clamped and unclamped without tools, but the rotational connection may be retained inadvertently, restricting the ring's freedom of rotation during lifting operations
Solution Approach 1:
The locking tool incorporates a visual indicator (colored section) that changes position to indicate whether the tool is in locked or unlocked position. When the colored section is visible in the annular plane, it indicates the locked position, providing a clear visual warning that the ring cannot rotate freely. This eliminates the risk of inadvertent retention of rotational connection while maintaining easy operation.
Solution Approach 2:
The locking tool acts as an intermediary element between the body and fixing member, providing a temporary rotational connection during installation and removal operations. The tool includes a connection element that engages with a recess in the fixing member head, allowing manual rotation without tools, and a blocking element that prevents accidental engagement during lifting operations.
2Adaptability or versatility
If the body is mounted freely in rotation on the fixing device, then the ring can rotate freely during lifting operations, but tools are required to screw and tighten the fixing device
Solution Approach 1:
The locking tool serves as a temporary intermediary that enables manual installation and removal operations without requiring external tools. The tool's connection element engages with the fixing member's recess, allowing the user to rotate the body relative to the fixing member during installation and removal, after which the tool is removed and the body is left free to rotate during lifting operations.
Solution Approach 2:
The system transitions between two dynamic states: during installation/removal, the locking tool provides a temporary rotational connection allowing controlled rotation; during lifting operations, the tool is removed and the body rotates freely on the fixing member. This dynamic switching between constrained and free rotation states optimizes both ease of operation and adaptability.
3Reliability
If the locking tool closes the passage in the annular rotating part, then the ring cannot be used for lifting when locked, but this prevents untimely unscrewing and ensures safety
Solution Approach 1:
The visual indicator (colored section) on the locking tool provides a clear visual signal when the passage is closed and the ring cannot be used. This prevents accidental use of the ring during locked position, enhancing safety through intuitive visual feedback that is easily observable during lifting operations.
Solution Approach 2:
The locking tool's blocking element proactively prevents engagement of lifting accessories with the annular rotating part when the tool is in the locked position. This preliminary anti-action occurs before any lifting operation could commence, ensuring that the ring cannot be inadvertently used while the rotational connection is still in place, thus preventing untimely unscrewing.
Data Source
Figure 1~2
Figure 3~6
Figure 7~10
AI summary
Rotating hoist ring (10) comprising a body (12) carrying an attachment loop (14) that defines a passage (15) for receiving a hoisting member, and a screw-fastening member (18) passing through a bore (16) in said body (12) so as to allow the body to rotate on the screw-fastening member about a relative rotation axis (A); and a temporary locking tool (34, 34', 34") for, in a locked position, rotationally connecting the body (12) and the fastening member (18) and, in an unlocked position, allowing the body (12) to rotate with respect to the fastening member (18), the locking tool (34, 34', 34") remaining connected to the hoist ring. In the locked position, the temporary locking tool (34) closes off the passage (15) defined in the attachment loop (14).