Lock Nut Retaining Ring Alignment Without Torque Change
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Solution Overview
Problem
Existing lock nut systems require additional rotation to lock the nut into position, which can alter the torque or preload on wheel end assemblies, leading to undesirable changes in the assembly's settings.
Innovation Solution
A lock nut system with a rotatably alignable retaining ring that allows the retaining ring to move in both clockwise and counterclockwise directions, enabling it to lock into position without additional nut rotation, maintaining the specified torque or preload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the nut is rotated to its specified position and then locked into place, then the nut can be securely locked on the shaft, but additional rotation is required which changes the torque or preload on the wheel end assembly
Solution Approach 1:
The retaining member is designed with rotatably alignable teeth that can dynamically adjust their position relative to the nut teeth. The retaining member can rotate within a limited range (one half the distance between identical locations on adjacent nut teeth) to achieve proper alignment, transforming a static alignment problem into a dynamic adjustment process that maintains the nut's rotational position
Solution Approach 2:
The system changes the alignment parameter from fixed to adjustable by allowing the retaining member to rotate. The key geometric parameter is the rotational range of the retaining member, which is specifically designed to be one half the distance between identical locations on adjacent nut teeth, enabling alignment without nut rotation
2Ease of operation
If the nut is locked into position by a retaining member, then the nut can be secured on the shaft, but the retaining member teeth must align with the nut teeth which may require additional rotation of the nut
Solution Approach 1:
The retaining member incorporates rotational freedom within controlled limits, allowing its teeth to dynamically align with the nut teeth through rotation of the retaining member itself rather than requiring rotation of the entire nut assembly. This dynamic adjustment simplifies the installation operation while maintaining precision
Solution Approach 2:
The alignment function is segmented between the nut (which maintains its rotational position) and the retaining member (which rotates to achieve tooth alignment). This segmentation allows the nut to remain stationary while the retaining member adjusts, separating the locking function from the alignment function
3Reliability
If the protrusion or key interlocks with the shaft while the teeth of the retaining member interlock with the teeth on the nut, then the nut is locked into place, but the conditions may not be met requiring additional rotation of the nut
Solution Approach 1:
The system uses dynamic rotation of the retaining member to satisfy multiple alignment conditions simultaneously. The retaining member can rotate to achieve proper interlocking between the protrusion and shaft slot while also aligning the teeth with the nut teeth, without requiring additional rotation of the nut
Solution Approach 2:
The retaining member is designed with preliminary rotational capability built into its structure, allowing it to pre-adjust its position to meet alignment conditions before final locking occurs. This preliminary alignment action eliminates the need for subsequent adjustments
Data Source
AI summary
A lock nut system includes a nut having a retaining member which includes locking teeth configured to engage with the lock nut teeth. The retaining member is rotatable in both a clockwise or counterclockwise direction a preselected distance to allow the locking teeth to mesh with the nut teeth so the lock nut can be locked into position on the shaft without further rotation or other adjustment of the nut.