Sit-Down Counterbalanced Forklift With Low-Floor Operator Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lift trucks compromise ergonomics, with high operator compartment floors requiring multiple steps for entry and exit, limited visibility, and elevated components that raise the center of gravity, leading to operator discomfort and reduced productivity.
Innovation Solution
A modular lift truck design with a common chassis that accommodates various components, featuring a low and spacious operator compartment floor, integrated steering and control mechanisms, and a low-profile layout to enhance visibility and stability, along with operator-inaccessible compartments for high-reliability components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If truck components are arranged in a stacked vertical orientation to minimize truck length and width, then maneuverability is improved, but operator compartment floor height increases requiring multiple steps for entry and exit
Solution Approach 1:
The patent transitions from vertical stacking of components to a horizontal arrangement where the operator compartment floor is positioned low relative to the ground. This dimensional change allows components to be distributed laterally rather than vertically, reducing the number of steps required for operator entry and exit while maintaining compact overall dimensions.
2Length of moving object
If truck components are arranged in a stacked vertical orientation, then maneuverability is improved, but visibility from operator compartment is hampered
Solution Approach 1:
By repositioning the operator compartment to have a low floor relative to the ground and arranging components horizontally, the patent improves the operator's line of sight. This dimensional rearrangement eliminates visual obstructions caused by elevated components while preserving the truck's compact footprint for maneuverability.
3Length of moving object
If truck components are arranged in a stacked vertical orientation, then maneuverability is improved, but center of gravity is raised reducing stability
Solution Approach 1:
The patent addresses stability by redistributing components from a vertical stack to a horizontal arrangement with a low operator compartment floor. This dimensional change positions heavy components lower relative to the ground, lowering the center of gravity and improving truck stability while maintaining compact dimensions for maneuverability.
4Device complexity
If operator compartment floor is positioned high to accommodate stacked components, then component arrangement is simplified, but operator comfort and productivity suffer
Solution Approach 1:
The patent resolves this contradiction by repositioning the operator compartment floor to a low position relative to the ground and arranging components horizontally. This dimensional rearrangement maintains simplified component arrangement while dramatically improving operator comfort and productivity through easier access, better visibility, and enhanced stability.
Data Source
AI summary
A sit-down counterbalanced forklift truck comprises a chassis, chassis compartment, power plant, plurality of wheels, lift assembly, operator compartment, and counterweight. The chassis has front, rear, left, and right sides. The chassis compartment is situated between those sides. The power plant is located in the chassis compartment. At least one of the plurality of wheels is operably connected to the power plant to drive the truck. The lift assembly is attached to the chassis, has forks configured to lift a load, and is operably connected to the power plant. The operator compartment is above and attached to the chassis, and has an operator seat and an operator compartment floor. The truck has a center of gravity situated at a gravitational center height that is lower than or equal to a height of at least one of the plurality of wheels.