Floor-Mounted Pivot Bearing Assembly for In-Place Heavy Door Adjustment
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Solution Overview
Problem
Existing hardware for large, heavy mounted structures like ballistic doors cannot withstand the pressure and allow for adjustments, especially after installation, due to misalignment or substructure variations, making adjustments time-consuming, labor-intensive, and costly.
Innovation Solution
An adjustable mounting system comprising a pivot nut, a floor mount with a slot for sliding engagement, and a cover that moves with the pivot nut, allowing for multi-axis adjustments (x, y, z, and rotational) without disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing hardware is used for mounting, then the mounting structure can support heavy doors, but adjustments cannot be made after installation without disassembly
Solution Approach 1:
The mounting system transitions from a static, fixed-position hardware design to a dynamic, adjustable design. The pivot assembly incorporates movable components including a sliding block that can move along guide rails, allowing the mounting position to be adjusted after installation. This dynamic capability enables adaptation to substructure variations without requiring complete disassembly of the mounting hardware.
Solution Approach 2:
The mounting hardware is divided into separate, modular components including the pivot assembly, sliding block, guide rails, and adjustment mechanisms. This segmentation allows individual components to be adjusted independently while maintaining the overall structural integrity needed to support heavy doors, resolving the contradiction between adjustability and structural stability.
2Strength
If existing hardware is used for mounting, then the mounting structure can support heavy doors, but the hardware cannot withstand the pressure from misalignment or substructure variations
Solution Approach 1:
The pivot assembly incorporates dynamic adjustment capabilities that allow real-time compensation for misalignment and substructure variations. The sliding block can move along the guide rails to accommodate positional variations, while the adjustment mechanisms enable fine-tuning of the mounting position, allowing the hardware to withstand pressure from misalignment without compromising structural strength.
Solution Approach 2:
The mounting system incorporates adjustment mechanisms that can compensate for substructure variations before they cause damage. The sliding block and guide rail system provide a cushioning effect by allowing controlled movement to absorb misalignment stresses, preventing excessive pressure on the hardware while maintaining support for heavy doors.
3Manufacturing precision
If adjustments are made by disassembly and removal of the door, then precise adjustments can be achieved, but the process is time-consuming, labor-intensive and expensive
Solution Approach 1:
The mounting system enables in-situ adjustments through its dynamic components. The sliding block can be moved along the guide rails and locked into position without removing the door from the building structure. This dynamic adjustment capability achieves precise alignment while eliminating the time-consuming disassembly and reassembly process associated with traditional mounting hardware.
4Ease of operation
If existing hardware is used for mounting, then the mounting structure can support heavy doors, but adjustments require disassembly which is prohibitive due to weight and handling difficulty
Solution Approach 1:
The pivot assembly incorporates dynamic adjustment mechanisms that allow easy modification of mounting position without requiring door removal. The sliding block and adjustment mechanisms enable operators to make precise adjustments to heavy doors while they remain installed, dramatically improving ease of operation while maintaining full support capability for heavy ballistic doors.
Data Source
AI summary
An adjustment system comprising: a pivot nut comprising a pivot nut aperture feature configured to accept the lower portion of a pivot bolt; a floor mount having a slot in which the pivot nut is slidingly engaged so as to have a movement including forward-backward, side-to-side and rotational, the floor mount having a floor mount aperture that aligns with the pivot nut aperture; and a cover configured to mount over the floor mount and engage with the pivot nut so as to move with the pivot nut.