Telehandler Cab Handles for Continuous Grip During Ascent
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Solution Overview
Problem
Existing telehandlers pose risks during operator ascent and descent due to slippery surfaces and lack of clear handholds, leading to potential balance loss and falls.
Innovation Solution
The telehandler is equipped with continuous, elongated handles on the cab jambs, each longer than half the jamb length, allowing operators to maintain grip while ascending or descending by sliding their hands along the handles for secure transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple discrete handles are distributed at various points of the cab, then the operator can find handholds at different heights, but the operator may lose grip when moving between handles
Solution Approach 1:
The patent merges multiple discrete handles into a single continuous handle that spans the entire height of the cab jamb. This continuous handle provides uninterrupted grip support, eliminating the gap between handles where operators previously lost grip during transitions. The handle extends from near the ground to the top of the cab, creating a unified gripping surface that maintains continuous support throughout the ascent or descent operation.
2Shape
If the cab is positioned at significant height above ground, then the telehandler has adequate operating clearance, but the operator faces increased fall risk during ascent and descent
Solution Approach 1:
The continuous handle is installed in advance as a permanent fixture on the cab jamb, providing prepared grip support before the operator begins ascent or descent. This preliminary provision of continuous handhold eliminates the need for operators to search for or transition between handles during the critical climbing phase, reducing balance disruption and fall risk from elevated height.
3Adaptability or versatility
If the ladder and cab surfaces are exposed to weather and soil, then the telehandler can operate in various environments, but the surfaces become slippery
Solution Approach 1:
The continuous handle incorporates surface texture modifications that change the friction parameter of the gripping surface. The handle features raised patterns, ribs, or textured coatings that increase surface friction and improve grip reliability even when exposed to rain, snow, or soil contamination. This parameter change maintains adequate friction coefficients across varying environmental conditions.
Data Source
AI summary
Described is a telehandler equipped with a carriage movable on wheels and a driver's cab (1), located above the carriage, which comprises an access door (10) equipped with two side jambs (11, 12), to each of which is fixed a continuous handle (2, 3) the length of which is greater than half the length of the respective jamb (11, 12).