Hydraulic Hose Internal Routing in Working Machine Boom
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Solution Overview
Problem
Conventional working machines face challenges in expanding cabin width due to the arrangement of hydraulic pipes between the cabin and booms, which restricts space and complicates hose installation, especially when the hoses are bent and the booms swing.
Innovation Solution
The solution involves a working machine design with a hose insertion hole in the boom base portion, allowing hydraulic hoses to be internally installed from the rear to the front, and a hose guide on the lift link to manage hose movement, ensuring easy installation and smooth operation even when the boom swings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the hydraulic pipe is arranged between the cabin and the booms, then the hydraulic connection is established, but the width of the room space of the cabin is restricted
Solution Approach 1:
The hydraulic hose is extracted from the external arrangement between cabin and booms and relocated to be internally installed within the boom structure. This removes the hydraulic piping from the space-constraining location while maintaining its functional connection, thereby expanding the cabin's room space width without compromising hydraulic system integrity.
Solution Approach 2:
The hydraulic hose is nested within the boom structure by internally installing it through the boom. This nesting approach places the hydraulic piping inside the existing boom framework, eliminating the need for external routing and thus freeing up the cabin's room space while keeping the hydraulic system integrated and protected.
2Ease of manufacture
If the hydraulic hose is extended toward the front of the boom after insertion from the rear, then the hose must be bent tightly, but this makes arrangement of the hydraulic hose difficult when the boom swings
Solution Approach 1:
The hose insertion hole is positioned on the lower surface of the boom base portion rather than the rear surface, changing the insertion dimension from horizontal to vertical. This allows the hydraulic hose to be fed upward through the boom from below, creating a more favorable routing path that reduces tight bending and accommodates boom swinging motion more effectively.
Solution Approach 2:
The hose guide member is pre-installed within the boom structure to guide the hydraulic hose during insertion and operation. This preliminary arrangement of the guide member creates a predetermined pathway that prevents tight bending and ensures smooth hose movement during boom swinging, making the installation process easier and more reliable.
Data Source
AI summary
Working machine that includes a machine frame, an operator seat, and a boom disposed on each side of the operator seat. The boom includes a boom base portion disposed on a position corresponding to a rear portion of the machine frame. A boom tip end portion is disposed opposite to the boom base portion. A boom intermediate portion is disposed between the boom base portion and the boom tip end portion. A boom cylinder is connected to the boom base portion at one end and to the machine frame at the other end. The boom cylinder is configured to swing the boom upward and downward. A hose insertion hole is disposed in the boom base portion and is opened backward or downward. A hydraulic hose is inserted into the hose insertion hold and is internally disposed in an inside of the boom intermediate portion.