Work Vehicle Linkage for Independent Implement Height Control
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Solution Overview
Problem
Existing work vehicles require labor to detach the mower deck when only the rear working machine needs to be elevated or lowered, without using the mower deck.
Innovation Solution
A work vehicle design featuring a traveling vehicle body, a first working machine, a working machine connector with a rotating end for elevating/lowering a second working machine, and a connecting link that allows the first working machine to be fixed at a predetermined height, enabling independent elevation/lowering of the second working machine without detaching the first working machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the mower deck and rear working machine are connected by a link to elevate/lower simultaneously, then the rear working machine can be elevated/ lowered together with the mower deck, but labor is required to detach the mower deck when only the rear working machine needs to be elevated/ lowered
Solution Approach 1:
The connecting link is divided into a first link connected to the mower deck and a second link connected to the rear working machine, with a rotation mechanism at the connection point. This segmentation allows the second link to rotate independently, enabling the rear working machine to be elevated/ lowered without detaching the mower deck, thus improving ease of operation while maintaining system integrity
Solution Approach 2:
The connection between the first and second links is made dynamic through a rotation mechanism rather than a fixed rigid connection. This allows the second link to rotate relative to the first link, enabling independent elevation/ lowering of the rear working machine while the mower deck remains attached, resolving the contradiction between operational ease and system complexity
2Reliability
If the mower deck is always attached to elevate/ lower the rear working machine, then the rear working machine can be positioned at predetermined height, but the mower deck cannot be stored when not in use
Solution Approach 1:
The rotation mechanism enables the second link to dynamically adjust its position and orientation. When the rear working machine needs to be positioned at a predetermined height, the link stabilizes for reliable positioning. When the mower deck needs to be stored, the second link can rotate to accommodate storage configurations, thus achieving both reliability and versatility
Solution Approach 2:
The system changes the geometric parameters of the connecting links through rotation. The angle and position of the second link relative to the first link can be varied, allowing the rear working machine to be positioned at different heights including predetermined positions, while also enabling storage configurations when the mower deck is not in use
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
Enables the free elevation/lowering of a rear working machine without labor, even when the mower deck is not in use, by utilizing a rotating working machine connector and connecting link mechanism.
Implementation Method 1
one end (3b) of the working machine connector (3) is rotatably attached to the traveling vehicle body (1), and the other end (3c) of the working machine connector (3) to which the second working machine is attached is elevated/lowered with a rotation of the working machine connector (3)
Implementation Method 2
a connecting link (4) for connecting the working machine connector (3) and the first working machine (2) is provided
Implementation Method 3
a working machine fixture (5) to fix the first working machine (2) at a predetermined height position is provided
Data Source
AI summary
A work vehicle includes: a traveling vehicle body (1); a first working machine (2) mounted on the traveling vehicle body (1); and a working machine connector (3) for attaching a second working machine, wherein one end (3b) of the working machine connector (3) is rotatably attached to the traveling vehicle body (1), and the other end (3c) of the working machine connector (3) to which the second working machine is attached is elevated/lowered with a rotation of the working machine connector (3) by a lifting apparatus, a connecting link (4) for connecting the working machine connector (3) and the first working machine (2) is provided, and a working machine fixture (5) is provided to fix the first working machine (2) at a predetermined height position, even if the second working machine is elevated/lowered with the rotation of the working machine connector (3) once the first working machine (2) is elevated/lowered to the predetermined height position by activating the connection link (4) with the rotation of the working machine connector (3).