Construction Machine Seat-Console Mounting for Stable Lever Operation
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Solution Overview
Problem
The existing seat structures for construction machine operators, where the seat and work equipment console are independently provided on the floor frame, result in insufficient operability due to differing swinging degrees, and attaching the work equipment console to the seat frame leads to instability and reduced rigidity, affecting the operability of the work equipment lever.
Innovation Solution
A seat structure with a suspension equipment fixed to the floor frame, an attachment bracket supporting both the seat and work equipment console via slide rails, and a guide bar for additional stability, ensuring the work equipment console is not directly attached to the seat frame, thus enhancing attachment strength and reducing shakiness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the work equipment console is attached to the seat frame, then the console moves with the seat for adjustable positioning, but the attachment strength is insufficient and the console is affected by seat shakiness
Solution Approach 1:
The patent separates the work equipment console and seat into independent mounting systems. The console is mounted to the floor frame via a console support structure with its own mounting points, while the seat is mounted separately to the floor frame. This segmentation eliminates the mechanical coupling that causes seat shakiness to transfer to the console, while preserving individual adjustability of both components.
2Strength
If the seat and work equipment console are completely independently provided on the floor frame, then attachment strength is sufficient, but the swinging degrees differ resulting in insufficient operability
Solution Approach 1:
The patent introduces a console support structure as an intermediary component between the floor frame and the work equipment console. This support structure includes adjustment mechanisms that allow the console to be positioned at optimal locations relative to the seat, enabling the operator to adjust both the seat and console to achieve favorable ergonomics and operability while maintaining strong independent attachment to the floor frame.
3Device complexity
If the work equipment console is attached to the seat frame, then positioning is simplified, but the seat frame rigidity is limited and shakiness increases
Solution Approach 1:
The patent merges the mounting function for both the seat and work equipment console into a unified floor frame mounting system. Both components are independently attached to the floor frame structure, which provides a rigid, stable foundation for both elements. This merging of mounting functions to a common stable base (the floor frame) eliminates the shakiness problem while maintaining separate adjustability, and the overall structure remains relatively simple.
Data Source
AI summary
A seat structure for an operator that is set in a cab of a construction machine such as a wheel loader includes: a suspension equipment fixed to a floor frame; a plate-shaped attachment bracket attached on the suspension equipment; a seat and a work equipment console juxtaposed to each other on the attachment bracket. The seat is attached to the attachment bracket via slide rails in a manner slidable back and forth. The work equipment console is also attached to the attachment bracket via a slide rail in a manner slidable back and forth.