Lashing Point Bracket With Support Cam
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Solution Overview
Problem
Existing lashing points for loading areas experience high bending stress and stress peaks when subjected to tensile loads at angles smaller than the minimum adjustable angle, leading to undesirable stress concentrations and potential damage.
Innovation Solution
A lashing point design featuring lateral guide pins and support cams that pivot below the loading area, allowing the bracket to project upwards and distribute forces evenly, with support cams positioned to minimize torque and prevent notching effects, ensuring even loading and secure attachment without bending the rear wall.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the bracket is supported on a bent rear wall to achieve flat contact, then the bracket can rest flat on the upper side of the rear wall, but the distance between the pivot axis and the rear wall is reduced, leading to high bending stress and stress peaks in the bracket
Solution Approach 1:
A support cam is introduced as an intermediary element between the bracket and the rear wall. The support cam has a specific geometry with a support surface that distributes the contact force, preventing stress concentration while maintaining the bracket in a flat contact position. This mediator resolves the contradiction by providing both stable support and stress distribution.
Solution Approach 2:
The support cam changes the geometric parameters of the contact interface. By designing the support cam with specific dimensions (radius, width, position), the contact area is increased and the force distribution is optimized, thereby reducing bending stress while maintaining the required support function.
2Stress or pressure
If the bracket is supported at a larger distance from the pivot axis to reduce bending moments, then the lever arm is increased and torque is reduced, but the support may not provide adequate stabilization at smaller angles
Solution Approach 1:
The support cam is positioned at an optimized distance from the pivot axis, and its geometric parameters (radius, width, orientation) are specifically designed to achieve both stress reduction and stable support at small angles. The support surface angle is matched to the minimum adjustable angle of the bracket, ensuring optimal performance.
Solution Approach 2:
The support cam is designed to engage with the bracket at specific positions during its range of motion, providing dynamic support that adapts to different angles. This ensures stabilization at small angles while maintaining stress distribution benefits at larger angles.
Data Source
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AI summary
The invention relates to a lashing point in or on a loading platform, comprising a bracket 7 with lateral guide pins 22 which are pivotable about an axis A below the loading platform 2 and guided in guides 11, so that the bracket 7 can be moved from a rest position to a lashing position and, in the lashing position, projects upwards above the loading platform 2 and is pivotable about the axis A in the direction of the loading platform 2. The bracket 7 has at least one support cam 27 on its side 26, which is pivotable in the direction of the loading platform 2, at a distance from the axis A.