Dock Leveler Lip Plate Welding and Support Leg Locking
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Solution Overview
Problem
Dock levelers face challenges in accommodating varying truck deck heights due to suspension compression and loading conditions, requiring a system that can adjust vertically and ensure a smooth transition between the truck deck and the loading dock, while also being efficient in installation and shipping.
Innovation Solution
A dock leveler system featuring a frame with a deck plate rotationally coupled to a frame, a lip plate with pivotal movement, and support legs with sliding tubes and a locking mechanism, allowing for adjustable height alignment and secure installation within a loading dock pit, along with a method for easy installation by welding the support legs in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the dock leveler uses a thin lip plate for smooth transition, then the transition between truck deck and dock leveler is smooth, but the structural strength is reduced
Solution Approach 1:
The patent combines the lip plate and deck plate into a single integrated welded structure. The lip plate is positioned at the leading edge and welded to the deck plate, creating a unified component that maintains both the smooth transition function and adequate structural strength through the combined geometry and welding connection.
Solution Approach 2:
The lip plate is pre-positioned at the leading edge of the deck plate before final installation, with its location determined in advance to optimize both the smooth transition appearance and structural integrity. The preliminary positioning allows for proper alignment and welding preparation.
2Adaptability or versatility
If the dock leveler uses a long deck plate to accommodate height variations, then the ramp length is sufficient, but the device complexity increases
Solution Approach 1:
The deck plate is designed with rotational capability about a pivot point, allowing it to dynamically adjust its angle and position to accommodate varying truck deck heights. This dynamic adjustment mechanism enables a single deck plate design to adapt to multiple height conditions without requiring multiple fixed-length plates.
Solution Approach 2:
The deck plate serves multiple functions: it provides the ramp surface for vehicle access, accommodates height variations through rotation, and integrates with the lip plate to ensure smooth transition. This multi-functionality reduces the need for separate components for each function.
3Ease of manufacture
If the support legs are designed for easy installation, then the installation labor is reduced, but the shipping stability is worsened
Solution Approach 1:
The support legs are segmented into telescoping sections that can slide relative to each other. During shipping, these sections are locked together in a compact configuration to maintain stability. During installation, the locking mechanism can be easily released to allow adjustment and final positioning.
Solution Approach 2:
The support legs are pre-assembled in a compact, locked configuration for shipping to ensure stability during transport. The locking mechanism is designed to be easily released and reconfigured during installation, allowing workers to quickly adjust and secure the legs in their final positions.
Data Source
AI summary
A dock leveler includes a frame. A deck plate is rotationally coupled to the frame at a deck hinge. A lip plate defines a lip plate lower surface and an edge. A lip hinge is coupled to the lip plate and a connection plate to provide relative pivotal movement of the lip plate and the deck plate. The connection plate is positioned below the deck plate. A support link extends from the lip plate to the connection plate. The support link is rotationally operable with respect to the lip plate and slidably operable with respect to the connection plate.