Machine Room Controller Layout Above Hydraulic Pump for Harness Access
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Solution Overview
Problem
The routing of harnesses connecting controllers and hydraulic pumps in construction machines is difficult due to the need to bypass large components like heat exchangers and engines, and this configuration complicates maintenance access.
Innovation Solution
A working machine with a hydraulic pump on one lateral side and a heat exchanger on the other, featuring a bracket for mounting controllers that faces a detachable side wall of the machine room, allowing the controllers to be positioned on the hydraulic pump's side and above it, facilitating harness routing and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the controller is arranged on the heat exchanger side with respect to the engine, then the controller can be positioned in the engine room, but the harness routing becomes difficult and the harness length increases
Solution Approach 1:
The controller is extracted from the conventional position on the heat exchanger side and relocated to the hydraulic pump side, separating it from the problematic routing path that would require bypassing the heat exchanger and fan. This repositioning eliminates the need for complex harness routing around large components.
Solution Approach 2:
The controller positioning is changed from a two-dimensional arrangement (on the heat exchanger side) to a three-dimensional arrangement (above and on the hydraulic pump side), utilizing vertical space to achieve better spatial relationships for harness routing and maintenance access.
2Device complexity
If the controller is arranged on the heat exchanger side, then the controller can be integrated into the engine room layout, but maintenance work becomes difficult due to the heat exchanger being an obstacle
Solution Approach 1:
The controller is extracted from the conventional position where it would be blocked by the heat exchanger during maintenance. By relocating it to the hydraulic pump side, the maintenance path is cleared of obstacles, allowing direct access to the controller for inspection and repair work.
3Device complexity
If the hydraulic pump and heat exchanger are arranged on opposite sides of the engine, then the engine room layout is optimized, but the harness routing becomes more difficult when connecting the controller to the hydraulic pump
Solution Approach 1:
The controller is positioned in the vertical dimension above the hydraulic pump, creating a direct overhead connection path. This three-dimensional positioning eliminates the need for the harness to bypass the engine horizontally, as the connection can be made vertically from above the hydraulic pump.
Data Source
AI summary
A working machine includes: a hydraulic pump arranged on a first lateral side with respect to a prime mover in a machine room; a heat exchanger arranged on a second lateral side with respect to the prime mover in the machine room; and a bracket to which a controller is mounted, the bracket being arranged in the machine room to face a cover member that is detachably provided and forms a side wall of the machine room. The bracket is arranged to be at least partially located on the first lateral side of the hydraulic pump and above the hydraulic pump in a rear view.