Excavator Controller and Valve Layout for Simpler Harness Wiring
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Solution Overview
Problem
In construction machines, the wiring of a wire harness between a controller and a control valve is complicated due to the layout of machine parts, making it difficult to place the control valve close to the controller, which increases wiring complexity.
Innovation Solution
The construction machine is designed with the control valve placed in a position opposing the hydraulic oil tank, and the controller is positioned in front of the hydraulic oil tank or between the control valve and the hydraulic oil tank, facilitating easier wiring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the controller is placed in a protected position away from heat and vibration, then the controller is protected from environmental damage, but the control valve cannot be placed close to the controller, increasing wiring complexity
Solution Approach 1:
The patent positions the controller on the rear face of the transverse plate (vertical/dimensional placement) rather than on the horizontal plane, allowing the control valve to be placed on the front face of the same plate. This spatial arrangement in different dimensions reduces wiring complexity while keeping the controller protected in its elevated position.
2Reliability
If the control valve is placed far from the controller, then the controller placement is protected from heat and vibration, but the wire harness wiring becomes difficult
Solution Approach 1:
The transverse plate serves as an intermediary structure that supports both the controller (on its rear face) and the control valve (on its front face). This intermediate structure enables close positioning of both components while maintaining the controller's protected status, facilitating easier wire harness routing between them.
3Adaptability or versatility
If multiple wire harnesses are wired from one controller to multiple instruments, then comprehensive control is achieved, but wiring complexity increases
Solution Approach 1:
The transverse plate structure provides a universal mounting platform that accommodates the controller and multiple control valves in close proximity. This multi-functional support structure enables comprehensive control of multiple instruments while reducing overall wiring complexity through centralized component placement.
Data Source
AI summary
On a turn frame of an excavation machine, a hydraulic oil tank is placed in the center of a right engine chamber in the front-back direction, a control valve is placed in front of the hydraulic oil tank, a battery is further placed in front of the control valve, and a cool mechanism is placed behind the hydraulic oil tank. The controller, which outputs a signal to drive the control valve, is placed opposite the hydraulic oil tank.