Integrated Loading Dock Bumpers That Clear Cargo Doors
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Solution Overview
Problem
Existing dock bumpers installed at the same elevation as vehicle beds obstruct cargo doors or interfere with other loading dock components, necessitating separate structures for impact absorption and lip support, which increases costs and maintenance.
Innovation Solution
The introduction of resiliently movable bumpers with integrated lip-supporting surfaces that absorb vehicle impacts and support the dock leveler's lip, positioned at a lower elevation to avoid interference with cargo doors and other components, eliminating the need for separate structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bumpers are installed at the same elevation as vehicle beds, then impact absorption is effective, but cargo doors are obstructed and other loading dock components are interfered with
Solution Approach 1:
The bumper is repositioned from a horizontal mounting at vehicle bed elevation to a vertical mounting on the dock face, changing the spatial dimension of installation. This vertical orientation allows the bumper to absorb impacts effectively while clearing the path for cargo doors to open vertically without obstruction.
Solution Approach 2:
The bumper system is divided into separate functional components: a vertical bumper structure mounted on the dock face for impact absorption, and a separate lip-supporting plate positioned above the bumper to support the dock leveler lip. This segmentation allows each component to perform its function independently without interference.
2Reliability
If separate structures are used for impact absorption and lip support, then each function is performed adequately, but installation costs and maintenance increase
Solution Approach 1:
The bumper and lip-supporting plate are combined into a single integrated assembly where the lip-supporting plate is positioned above and supported by the vertical bumper structure. This merging reduces the number of separate discrete structures, simplifying installation and maintenance while maintaining reliable impact absorption and lip support functions.
Solution Approach 2:
The integrated bumper assembly serves multiple functions: the vertical bumper structure absorbs vehicle impacts, while the integrated lip-supporting plate simultaneously supports the dock leveler lip and provides a mounting surface for electrical wiring. This multi-functionality eliminates the need for separate dedicated structures for each function.
3Reliability
If multiple discrete structures are installed on the loading dock, then all functions are covered, but available space for electrical wiring is reduced
Solution Approach 1:
The lip-supporting plate is designed to serve multiple purposes: supporting the dock leveler lip, providing structural attachment points, and creating integrated spaces or channels for routing electrical wiring harnesses between vehicle restraints and electrical boxes. This eliminates the need for separate wiring conduits and maximizes space utilization.
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
Reduces installation costs and maintenance by integrating impact absorption and lip support functions, providing additional space for electrical wiring and reducing the number of discrete structures on the loading dock.
Implementation Method 1
a compressible body between the first casing and the second casing
Data Source
AI summary
Bumpers for loading docks are disclosed. An example rear impact guard (RIG) bumper includes a casing, a compressible body in the casing, a rod through the casing, and a lip-supporting plate associated with the casing and positioned above the compressible body, where the lip-supporting plate is to move with the casing in reaction to an impact from a vehicle.