Turnbuckle Locking Plate Prevents Eyebolt Rotation
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Solution Overview
Problem
Existing locking arrangements for turnbuckles in agricultural implements are unreliable in preventing rotation under heavy loads and harsh conditions, often requiring high torque tools and special components, and are difficult to mount on round turnbuckles with limited space.
Innovation Solution
A locking plate structure with a U-bolt attachment to the turnbuckle's hex member and a slotted end to secure the eyebolt connector, allowing secure adjustment without high torque requirements and compatibility with both left and right offset turnbuckles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If jam nuts, double nuts, or special locking washers are used to prevent rotation, then the locking capability is improved, but the device complexity and torque requirements increase
Solution Approach 1:
The locking plate is divided into distinct functional segments: a mounting end with apertures for U-bolt attachment to the hex member, and a slotted end for receiving the connector. This segmentation allows each part to perform its specific function efficiently without requiring complex integrated structures or multiple separate components.
Solution Approach 2:
The locking plate serves as an intermediary component between the U-bolt and the connector. It translates the clamping force from the U-bolt into a rotational constraint on the connector, preventing rotation without requiring direct connection between the U-bolt and connector, thereby simplifying the overall locking mechanism.
2Reliability
If high torque locking nuts are used to secure the turnbuckle, then the anti-rotation performance is improved, but the ease of operation deteriorates due to need for special tools
Solution Approach 1:
The locking plate with its slotted end automatically accommodates the connector and prevents rotation through its geometry alone. The slot width is designed to fit the connector, creating a mechanical interference fit that prevents rotation without requiring additional locking nuts, washers, or high-torque fastening operations.
3Reliability
If flip-over structure is used to capture the adjusting nut, then the locking reliability is improved, but the adaptability to different turnbuckle configurations deteriorates
Solution Approach 1:
The locking plate is designed with universal applicability to both left-hand and right-hand offset turnbuckles. The mounting end can be attached to the hex member regardless of offset direction, and the slotted end can receive the connector in either configuration, making the same locking plate design universally applicable to different turnbuckle types.
4Strength
If locking devices are secured to resist heavy forces, then the strength is improved, but the ease of manufacture and installation in limited space deteriorates
Solution Approach 1:
The locking plate utilizes the dimensional space efficiently by extending perpendicular to the turnbuckle axis. The slotted end protrudes beyond the hex member in a direction that provides leverage for connector attachment while maintaining a compact overall profile that fits within limited installation spaces.
Data Source
AI summary
A lock for an implement turnbuckle includes an apertured plate attached directly to the turnbuckle. The plate receives the pin or linkage connecting structure that attaches to the threaded eyebolt of the turnbuckle. The mounting end of the plate opposite the slot is secured against a flat on the internally threaded member of the turnbuckle by a U-bolt. The plate prevents relative rotation between the eyebolt and an internally threaded member receiving the eyebolt to thereby maintain the desired turnbuckle length adjustment.