Steering Column Switch Layout for Better Work Machine Operability
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Solution Overview
Problem
Existing working machines face issues with switch arrangement complexity, hydraulic pipeline complications, reduced cabin space due to brake fluid tanks and air conditioner ducts, and difficulty in constructing a compact brake pedal support structure.
Innovation Solution
The working machine features an inclined switch arrangement on the steering column, simplified hydraulic pipeline design, a brake fluid tank integrated into the steering column, and a twisting coil spring for the brake pedal return mechanism, along with a duct structure that rises from the floor to the steering column.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a work machine is equipped with both a work implement and a cargo body, then work efficiency is improved, but the machine becomes top-heavy and unstable
Solution Approach 1:
The cargo body is designed to be movable rather than fixed, allowing it to be positioned at the rear during cargo transport to maintain stability, and moved to the front during work operations to optimize work performance. This dynamic repositioning resolves the contradiction between productivity and stability.
Solution Approach 2:
The cargo body can be rotated between horizontal and vertical orientations. When rotated vertically, the center of gravity shifts, improving stability during transport. This dimensional change allows the system to maintain both productivity and stability under different operating conditions.
2Quantity of substance
If the cargo body is made large to increase cargo capacity, then cargo capacity is improved, but the machine becomes top-heavy and unstable
Solution Approach 1:
The movable cargo body allows the system to achieve both large cargo capacity and stability by repositioning the cargo body to the rear during transport operations, rather than being permanently fixed in a position that compromises stability.
3Device complexity
If the cargo body is fixed to the carrier, then structural simplicity is improved, but the machine becomes top-heavy and unstable
Solution Approach 1:
The cargo body is connected through a simple movable connection mechanism rather than being permanently fixed. This maintains relatively simple structure while enabling the cargo body to be repositioned to maintain stability during different operations.
Data Source
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AI summary
To improve operability of a plurality of switches (101A to 101D) provided on an upper surface side of a steering column (87). A working machine (1) includes a steering (15), a steering post (91) supporting the steering (15), and a steering column (87) covering the steering post (91). The steering column (87) has a switch panel arranged below the steering (15) on an upper surface of the steering column (87), and the switch panel (99) has a first switch group (101) including a plurality of switches (101A to 101D) arranged to have an inclining configuration in plan view where the switches align in a machine outward direction as shifting forward, the first switch group (101) being arranged on both sides of the steering post (91) in a machine width direction (K2).