Work Machine Boom-Mounted Manual Adjusting Valve for Hose Access
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Solution Overview
Problem
The increased number of hydraulic hoses connecting the vehicle body-side piping and boom-side piping in construction machines degrades the accessibility and maintainability of manual adjusting valves, particularly when they are provided on the upper slewing body.
Innovation Solution
The manual adjusting valve is attached to the boom of the work machine, allowing for improved accessibility and maintainability by positioning it at a height accessible from a standing position and avoiding interference with slewing-purpose hydraulic motors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of hydraulic hoses is increased to support more hydraulic actuators, then the hydraulic system functionality is improved, but the accessibility and maintainability of manual adjusting valves deteriorates
Solution Approach 1:
The manual adjusting valve is extracted from the upper slewing body and relocated to the boom. This separation removes the valve from the congested area where multiple hydraulic hoses are concentrated, thereby maintaining hydraulic system functionality while significantly improving accessibility and maintainability of the valve.
Solution Approach 2:
The valve location is changed from the horizontal plane (upper slewing body) to a different spatial dimension (boom structure). This dimensional relocation places the valve in an area with better accessibility, away from the dense hose arrangement on the slewing body.
2Adaptability or versatility
If manual adjusting valves are provided on the upper slewing body, then the hydraulic control functionality is improved, but the accessibility for operation and maintenance deteriorates
Solution Approach 1:
The manual adjusting valve is extracted from the upper slewing body and installed on the boom instead. This relocation maintains the hydraulic control functionality while dramatically improving accessibility, as the boom provides a more accessible location for operation and maintenance activities.
3Area of stationary object
If multiple hydraulic hoses are arranged in two stages vertically, then the space utilization is improved, but the complexity of hose arrangement and potential for interference increases
Solution Approach 1:
By relocating the manual adjusting valve to the boom, the patent simplifies the overall hose arrangement. The valve is positioned in an area with fewer hose connections, reducing the complexity of hose routing and minimizing potential interference between hoses and valve components.
Data Source
AI summary
A work machine includes a lower travel body, an upper slewing body mounted on the lower travel body in a slewable manner, a work attachment including a boom attached to the upper slewing body in a raisable and lowerable manner, a hydraulic actuator attached to the work attachment, and a manual adjusting valve provided in piping extending from the upper slewing body to the hydraulic actuator. The manual adjusting valve is attached to the boom.