Work Vehicle Mowing Height Adjustment Mechanism
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Solution Overview
Problem
Existing work vehicles require operators to temporarily raise the mower deck, exit the vehicle, and manually adjust the mowing height, which is cumbersome and lacks clear confirmation of the adjusted height.
Innovation Solution
A work vehicle equipped with an electric hydraulic cylinder on the mower deck, connected via a link mechanism to a front wheel arm, allowing for electric adjustment of the mowing height using a switch operation, and an indicator mechanism to visually confirm the adjusted height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment of mowing height is used, then the structure is simple, but the operation is troublesome and time-consuming
Solution Approach 1:
The patent replaces the manual mechanical adjustment system with an electric motor-driven system. The electric motor rotates the adjustment screw automatically when the switch is operated, eliminating the need for manual cranking and reducing the time and effort required for height adjustment.
Solution Approach 2:
The patent implements a self-service adjustment mechanism where the electric motor automatically performs the adjustment operation when activated by the switch. The system serves itself by converting electrical energy directly into the mechanical adjustment motion without requiring external manual intervention.
2Ease of operation
If electric hydraulic cylinder is used for height adjustment, then the ease of operation is improved, but the visibility of adjustment amount deteriorates
Solution Approach 1:
The patent incorporates a visual feedback mechanism through the scale plate and indicator. The indicator moves in conjunction with the adjustment mechanism, providing real-time visual feedback about the current mowing height setting. This allows the operator to see the adjustment amount and confirm the current position without losing information about the adjustment state.
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 easy and precise adjustment of the mowing height without the need to exit the vehicle, with clear visual confirmation of the adjusted height, improving operational efficiency and convenience.
Implementation Method 1
an electric hydraulic cylinder provided on the mower deck and connected to a front wheel arm via a link mechanism
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
To provide a work vehicle in which how much a current mowing height is adjusted can be easily confirmed. The work vehicle includes a traveling vehicle body 2 and a mower unit 1 provided at the traveling vehicle body 2. The mower unit 1 includes: a deck portion 10 on which a mowing mechanism that mows grass is provided; a front wheel portion 12 provided in front of the deck portion 10 and configured to be in contact with ground during mowing work; a front wheel arm portion 13 connected, on a front end side thereof, to the front wheel portion 12 and swingably provided on the deck portion 10; a mowing height cylinder 17 connected to the front wheel arm portion 13 via a link mechanism 16 and configured to change a positional relationship between a lower end of the front wheel portion 12 and a lower end of the deck portion 10; and an indicator 25j configured to move in conjunction with the mowing height cylinder 17. The traveling vehicle body 2 includes a mowing height operation tool 27 configured to operate the mowing height cylinder 17.