Threaded Load Anchor With Spring-Assisted Thread Engagement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing devices with threaded locking bolts for securing loads face issues such as improper assembly, risk of loosening under load, and difficulty in ensuring full thread engagement, leading to potential failure and safety hazards.
Innovation Solution
Incorporation of a spring device in the clamping force flow that allows for axial compression, ensuring sufficient play for complete thread engagement and preventing loosening, with tactile feedback and visual indicators for proper assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the threaded locking bolt is inserted with great force to ensure initial engagement, then the thread segment locks into the internal thread, but the device cannot be further tightened by hand and may require loosening and retightening
Solution Approach 1:
The spring device is pre-installed in the force flow path between the base and the object, providing a cushioning effect that prevents over-compression during initial insertion. This allows the threaded locking bolt to be inserted with sufficient force for engagement while the spring absorbs excess force, preventing the scenario where further hand tightening becomes impossible.
Solution Approach 2:
The spring device introduces dynamic compliance to the otherwise rigid connection between base and object. As the threaded locking bolt is tightened, the spring compresses dynamically, accommodating variations in insertion force and thread engagement depth, thereby enabling continuous hand tightening without requiring loosening and retightening cycles.
2Stability of the object's composition
If the base rests tightly against the object after insertion, then stable attachment is achieved, but insufficient axial play remains for proper tightening of the threaded locking bolt
Solution Approach 1:
The spring device creates a dynamic interface between the base and object, maintaining stable attachment through continuous spring force while accommodating the axial play needed for tightening operations. The spring compresses during tightening and then maintains consistent clamping force, ensuring both stability and operability.
Solution Approach 2:
The spring device changes the mechanical parameter of the connection from rigid (zero axial play) to compliant (controlled axial play). This allows the base to remain stable through spring force while providing sufficient axial movement space for the threaded locking bolt to be properly tightened to specification.
3Reliability
If the thread segment is extended radially to engage with the threaded opening, then fastening capability is achieved, but incomplete thread engagement may occur leading to loosening under load
Solution Approach 1:
The spring device provides beforehand cushioning in the axial direction, preventing scenarios where excessive insertion force causes misalignment or incomplete thread engagement. By absorbing axial shocks and variations, the spring ensures that the radially extended thread segment engages smoothly and completely with the threaded opening, eliminating the need for post-installation tightening adjustments.
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 spring device reduces the risk of improper assembly, provides tactile and visual feedback for secure attachment, and ensures the device is properly mounted, enhancing safety and ease of use.
Implementation Method 1
a spring device (42) which can be compressed in the axial direction and is located in the force flow of the clamping force
Data Source
Figure 1
Figure 2~4
Figure 5~6C
AI summary
The invention relates to a device (1) with a holding section (2) to which a lifting, lifting, or lashing device (4) can be attached. The device is used, for example, for attaching lifting devices to a load or, when the device is attached to the load, for lifting or lashing the load. The device has a base (10) on which the holding section is located. A threaded locking bolt (14) with a radially movable and lockable threaded segment (34) extends through the base. The threaded locking bolt is used to fasten the base to an object (20), for example the load. The threaded locking bolt generates a clamping force (30) that holds the base and thus the device to the object. To facilitate assembly, a spring device (42) that can be compressed in the axial direction (16) is arranged in the force flow (28) of the clamping force.