Rotating Anchorage Point With Axial Locking for Fast Secure Attachment
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Solution Overview
Problem
Existing attachment points for lifting and lashing objects are cumbersome due to the need for frequent screwing and unscrewing, and they lack stability when subjected to lateral forces, which can lead to unintentional detachment.
Innovation Solution
An attachment point design featuring a connecting element with a bearing disk and a two-point bearing system, where the rotary driving contours are arranged below the bearing disk, allowing for axial mobility and enhanced stability, enabling compact construction and effective torque transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the connecting screw is frequently screwed and unscrewed to attach and detach the lifting point, then the lifting point can be reused for multiple operations, but the time and effort required for repeated assembly and disassembly increases
Solution Approach 1:
The upper part is made axially movable relative to the lower part, transitioning between a first position for tool-free detachment and a second position for torque transmission. This dynamic positioning allows the lifting point to be quickly detached when not in use while maintaining secure connection during operation, eliminating the need for frequent screwing and unscrewing.
Solution Approach 2:
The lifting point incorporates a self-locking mechanism where the upper part's axial movement automatically engages or disengages the torque transmission function. When in the first position, the lifting point detaches without tools; when in the second position, it automatically transmits torque to the connecting screw, providing self-service functionality.
2Ease of operation
If the upper part is freely rotatable relative to the lower part, then the lifting point can be easily attached and detached, but stability against lateral forces decreases
Solution Approach 1:
The rotatability of the upper part is made conditional based on its axial position. In the first position, the upper part is freely rotatable for easy attachment and detachment. In the second position, the rotational movement is constrained to provide stability against lateral forces during torque transmission.
Solution Approach 2:
Different regions of the upper part have different functional properties: the bearing surface area allows free rotation for ease of operation, while the drive cam area provides rotational constraint for stability when torque is applied. This local differentiation of functional qualities resolves the contradiction.
3Adaptability or versatility
If the rotary driving contours are arranged above the bearing disk, then the upper part can be freely positioned, but the overall height of the lifting point increases
Solution Approach 1:
The rotary driving contours are relocated from the vertical dimension (above the bearing disk) to the horizontal dimension (below the bearing disk). This spatial reconfiguration maintains the positioning freedom of the upper part while reducing the overall height of the lifting point structure.
4Reliability
If the connecting screw has a socket head requiring a screwdriving tool, then torque can be applied for secure attachment, but the device complexity increases
Solution Approach 1:
The upper part itself serves as the torque application mechanism through its drive cam that engages with the connecting screw's drive contour. This self-service approach eliminates the need for external screwdriving tools, maintaining secure attachment while reducing device complexity.
Solution Approach 2:
The upper part performs multiple functions: it provides the lifting eye for attachment, enables tool-free detachment when in the first position, and transmits torque to the connecting screw when in the second position. This multi-functionality eliminates the need for separate screwdriving tools.
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 design simplifies the screwing and unscrewing process, provides stability against lateral forces, and allows for a more compact height, reducing the risk of unintentional detachment while maintaining effective torque transmission.
Implementation Method 1
a wave spring (10) acting in an axial direction, against whose restoring force the upper part (3) can be adjusted in an axial direction relative to the lower part (2)
Implementation Method 2
The first bearing point is the bearing of the connecting element-side bearing disc in or on a bearing disc bearing of the upper part, where the bearing disc is supported on its radial outer surface
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Described is a stop point comprising a lower part 2 with a connecting element 4 for connecting the stop point 1 to an object to be fixed or handled by it, and an upper part 3 rotatable relative to the lower part 2 about the longitudinal axis of the connecting element 4, with a connecting means 8 for connecting a stop or lashing device, the upper part 3 being adjustable in the axial direction relative to the lower part 2 against the restoring force of a return spring 10 or a return spring arrangement, wherein in a first position the upper part 3 is freely rotatable relative to the lower part 2 and in a second position the upper part 3 acts torque-lockingly on the connecting element 4, wherein the connecting element 4 carries a radially projecting bearing disc 6 and the upper part 3 has a bearing disc bearing 9 supporting the bearing disc 6 on its radial cylindrical surface, and wherein the connecting element 4 has an external,The upper part 3 has a rotary drive contour 13 arranged at a distance from the bearing disc 6 in the direction of its shaft 5, and the upper part 3 carries a complementary rotary drive contour 19 which, as a result of an axial adjustment of the upper part 3 from its first position to its second position, can be brought into engagement with the rotary drive contour of the connecting element 4.