Tractor Backhoe Swing Bracket Hydraulic Hose Routing
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Solution Overview
Problem
Conventional tractor-backhoe configurations are limited in drawing the boom forward due to the need for space to secure hydraulic hoses between the boom cylinder pivot portion and the swing bracket pivot portion, restricting the boom's proximity to the tractor.
Innovation Solution
The design includes a swing bracket with first and second openings, allowing the control valve unit to be positioned on an extension line between these openings, eliminating the need for space to secure hydraulic hoses, enabling the boom to be drawn closer to the tractor by routing the hose unit linearly through these openings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the control valve unit is disposed on the upper side of the frame and hydraulic hoses are extended between the boom cylinder pivot portion and the swing bracket pivot portion, then the hydraulic system can be properly configured, but the base portion of the boom cannot be drawn forward close to the tractor due to space requirements for securing hydraulic hoses
Solution Approach 1:
The patent changes the spatial arrangement by moving the control valve unit from the upper side of the frame to the rear side of the frame, and routes hydraulic hoses through the swing bracket structure rather than extending them in the traditional manner. This dimensional reorganization eliminates the space conflict and allows the boom to be drawn forward close to the tractor while maintaining proper hydraulic system configuration.
2Reliability
If space is secured for inserting hydraulic hoses between the boom cylinder pivot portion and the swing bracket pivot portion, then the hydraulic system functions correctly, but the boom cannot be positioned forward close to the tractor
Solution Approach 1:
The patent extracts the control valve unit from its conventional position on the upper side of the frame and relocates it to the rear side of the frame. This extraction eliminates the spatial conflict that prevented the boom from being drawn forward, while the hydraulic hoses are reconfigured to extend from the rear side through the swing bracket, maintaining system functionality without the length constraint.
3Ease of manufacture
If the control valve unit is positioned on the upper side of the frame, then the hydraulic hoses can be extended to the boom cylinder, but this positioning prevents the boom from being drawn forward due to space constraints
Solution Approach 1:
The patent relocates the control valve unit from the upper side of the frame to the rear side of the frame, changing the spatial dimension of the hydraulic system arrangement. This allows hydraulic hoses to be extended from the rear side through the swing bracket to the boom cylinder, eliminating the need to secure space in the traditional upper frame location and enabling the boom to be drawn forward close to the tractor.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration allows the boom to be positioned more forwardly, increasing the start angle and improving operational flexibility by eliminating the need for additional space, thus enhancing the tractor's operational capabilities.
Implementation Method 1
a hose unit for feeding pressure oil from the control valve unit to the boom cylinder, the arm cylinder and the bucket cylinder
Data Source
AI summary
A tractor with a backhoe is disclosed. The backhoe is mounted to a rear portion of the tractor. The backhoe has a boom, an arm pivotally supported to a leading end of the boom, a bucket pivotally supported to a leading end of the arm, a boom cylinder for operating the boom, an arm cylinder for operating the arm and a bucket cylinder for operating the bucket. The tractor includes a frame attached to a rear portion of the tractor, a swing bracket supported to a rear portion of the frame to be pivotable about a vertical axis, a control valve unit having control valves for controlling the boom cylinder, the arm cylinder and the bucket cylinder and a hose unit for feeding pressure oil from the control valve unit to the boom cylinder, the arm cylinder and the bucket cylinder. The wing bracket includes a first opening open to the front side and a second opening open to the rear side. The control valve unit is disposed, in its plan view, on an extension line of the first opening and the second opening. The hose unit extends substantially linearly from the control valve unit through the first opening to the second opening.