Dock Leveler Slip-Resistant Coating for Traction
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Solution Overview
Problem
Dock levelers face challenges such as insufficient traction, high material costs, complex manufacturing processes, and operational inefficiencies due to their design, leading to issues like malfunctions, increased maintenance, and safety concerns.
Innovation Solution
The design incorporates a slip-resistant coating with a rough top surface on the deck and lip surfaces, a simplified spring mechanism without conical ends, and a reduced part count to enhance traction, lower material costs, and improve operational efficiency, along with a maintenance strut assembly to secure the dock leveler in desired positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a smooth metal surface is used on the deck and lip, then manufacturing is simple and cost-effective, but traction is insufficient leading to safety concerns
Solution Approach 1:
The patent applies a coating with altered surface parameters (roughness, friction coefficient) to the deck and lip surfaces. This changes the physical properties of the surface to provide enhanced traction while maintaining the underlying metal structure's manufacturing simplicity and cost-effectiveness.
Solution Approach 2:
The patent uses a composite structure combining metal substrate with a friction-enhancing coating layer. This composite approach provides both the structural integrity of metal and the improved traction of the coated surface, resolving the contradiction between manufacturing simplicity and traction requirements.
2Ease of manufacture
If conical-ended springs are used to facilitate attachment, then attachment is easier, but material costs increase and manufacturing becomes more complex
Solution Approach 1:
The patent removes the conical end feature from the spring design, extracting the complex geometry that caused increased material costs and manufacturing difficulty. The spring uses a standard cylindrical or square end design that is simpler and more cost-effective to manufacture while still achieving the required attachment function.
Solution Approach 2:
The spring attachment mechanism is segmented into separate components (spring body, attachment plate, fasteners) that can be manufactured independently using simple processes and then assembled. This segmentation eliminates the need for complex conical machining while maintaining attachment functionality.
3Ease of manufacture
If the spring constant varies across the conical portion, then the spring can be manufactured with uniform material, but the spring constant cannot be made uniform across the length
Solution Approach 1:
The patent removes the conical portion entirely, extracting the geometric feature that caused the spring constant to vary along its length. With a uniform cylindrical or square cross-section, the spring constant becomes consistent throughout, achieving manufacturing precision while maintaining material uniformity.
4Strength
If support is added lower on the face plate to reduce internal loads, then structural strength improves, but material costs and manufacturing complexity increase
Solution Approach 1:
The patent addresses internal load distribution by adding support structures in a different dimensional orientation or location than traditional face plate reinforcement. This could involve vertical supports, angular bracing, or distributed support elements that redirect forces more effectively, improving strength without proportionally increasing material usage or manufacturing complexity.
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 solution provides improved traction, reduced material costs, simplified manufacturing, enhanced operational efficiency, and increased stability, addressing the challenges of traction, cost, and maintenance associated with traditional dock levelers.
Implementation Method 1
a slip resistant coating applied to the upper surface of the deck and the upper surface of the lip, the slip resistant coating cured to have a rough top surface
Data Source
AI summary
A dock leveler comprises a deck having an upper surface, the deck configured to be pivotally attached to a loading dock. The dock leveler may further comprise a lip pivotally connected to the deck, the lip having an upper surface. The dock leveler may further comprise a slip resistant coating applied to the upper surface of the deck and the upper surface of the lip, the slip resistant coating cured to have a rough top surface irrespective of surface features of the surface the coating is applied to.