Rice Transplanter Platform Layout for Lower Center of Gravity
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Solution Overview
Problem
Transplanters with thin wheels have a high risk of overturning when entering and exiting open fields, necessitating a solution to lower the center of gravity and enhance stability.
Innovation Solution
The platform for an electrically driven rice transplanter includes a battery positioned at the lower center of the vehicle, with a larger capacity rear wheel motor to smoothly transmit power to the transplant and fertilizing units, thereby lowering the center of gravity and improving stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the transplanter uses thin wheels for its characteristics, then it can operate in narrow paddy fields, but it has a high risk of overturning when entering and exiting open fields
Solution Approach 1:
The patent addresses the stability issue by changing the vertical dimension of the vehicle structure. It introduces a lower platform positioned below the main vehicle body, creating a multi-level structural arrangement. This dimensional change allows the center of gravity to be positioned lower without compromising the thin wheel design, thereby resolving the overturning risk while maintaining adaptability to narrow fields
Solution Approach 2:
The lower platform acts as a counterbalancing structure that provides structural support opposite to the high center of gravity created by the battery and upper components. This counterweight effect stabilizes the vehicle during transitions between paddy fields and open fields, preventing overturning while preserving the thin wheel configuration for narrow field operation
2Ease of operation
If the battery is positioned at the upper portion of the vehicle, then it is easy to install and access, but the center of gravity rises increasing the risk of overturning
Solution Approach 1:
The patent divides the vehicle structure into multiple levels: an upper platform for the battery and control components, and a lower platform for structural support and additional components. This segmentation allows the battery to be positioned on the upper platform where it is easily accessible, while the lower platform provides counterbalancing support to prevent overturning, thus resolving the contradiction between ease of operation and vehicle stability
3Productivity
If the rear wheel motor has larger capacity to transmit power to transplant and fertilizing units, then power transmission is smoother, but the device complexity increases
Solution Approach 1:
The patent applies local quality by differentiating the motor capacities based on the specific power requirements of different vehicle functions. The rear wheel motor is designed with larger capacity to handle the high power demands of the transplant and fertilizing units, while the front wheel motor has smaller capacity suitable for steering and light driving tasks. This localized optimization of motor capacity ensures efficient power transmission to where it is most needed without unnecessarily increasing overall device complexity
Data Source
AI summary
The present invention relates to a platform for an electrically driven rice transplanter having an improved platform structure with a lowered center of gravity to prevent the risk of overturning when entering and exiting an open field due to thin wheels of the rice transplanter. The platform comprises: a battery; and a front wheel part and a rear wheel part driven by the battery. The front wheel part has: a front wheel motor receiving power from the battery; a front wheel transmission connected to the front wheel motor; and a front wheel vehicle shaft connected to the front wheel transmission to drive front wheels. The rear wheel part has: a rear wheel motor receiving power from the battery; a rear wheel transmission connected to the rear wheel motor; and a rear wheel vehicle shaft connected to the rear wheel transmission to drive rear wheels.