Hydraulic Piping Routing in Working Machines
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Solution Overview
Problem
It is challenging to ensure sufficient space for hydraulic piping extensions in working machines, particularly when extending from the rear-mounted auxiliary control valve to the front-mounted implement, due to space constraints on the vehicle body.
Innovation Solution
The implementation of hydraulic piping that extends from the front portion to the rear portion of the vehicle body, supported by brackets and a fender, allowing for stable and efficient fluid supply without the need for additional control valves at the front portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydraulic piping is extended from the front-mounted-implement control valve at the front portion of the vehicle body, then hydraulic fluid can be supplied to the front-mounted implement, but sufficient space for piping extension cannot be ensured
Solution Approach 1:
The hydraulic piping is routed through the vertical space between the fender and travel apparatus rather than extending horizontally from the front control valve. This utilizes the unused vertical dimension to accommodate the piping without requiring additional horizontal space on the vehicle body.
Solution Approach 2:
The patent introduces an intermediate routing path through the fender-travel apparatus space, using this intermediate zone as a conduit for hydraulic piping. This mediator space allows connection between front and rear portions without requiring direct extension from control valves.
2Reliability
If hydraulic piping is extended from the auxiliary control valve at the rear portion of the vehicle body, then hydraulic fluid can be supplied to the rear-mounted implement, but sufficient disposition space cannot be ensured
Solution Approach 1:
The piping utilizes the vertical space between the fender and travel apparatus, transforming a two-dimensional horizontal layout problem into a three-dimensional solution that uses the unused vertical dimension for routing.
Solution Approach 2:
The space between the fender and travel apparatus serves multiple functions: it provides structural support through the fender, accommodates hydraulic piping, and maintains access to the travel apparatus. This multi-functional use of space resolves the contradiction between providing piping routes and maintaining space constraints.
3Ease of operation
If a separate operation lever is provided at the front portion for operating the front-mounted-implement control valve, then the front-mounted implement can be operated, but the device complexity increases
Solution Approach 1:
The patent merges the control functions by positioning the auxiliary control valve to handle both front-mounted and rear-mounted implement operations. This consolidation eliminates the need for separate control valves and operation levers at the front, reducing device complexity while maintaining ease of operation through the existing control interface.
Data Source
AI summary
A working machine includes a vehicle body, a travel apparatus provided to a rear portion of the vehicle body, a fender provided above the travel apparatus, and hydraulic piping that is disposed between the travel apparatus and the fender and that extends from a front-portion side to a rear-portion side of the fender.