Power Branching Drive for Agricultural Equipment Speed Control
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Solution Overview
Problem
Agricultural commercial vehicles face inefficiencies in driving working equipment due to the dependence of power take-off shaft rotational speed on the combustion engine, leading to suboptimal performance and increased gasoline consumption when using purely electrical drives.
Innovation Solution
Implementing a power branching system that combines mechanical and electrical power branches through a planetary transmission, allowing for independent control of rotational speed and efficient energy use by leveraging both mechanical and electrical power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a purely electrical drive system is used to provide independent rotational speed control for working equipment, then rotational speed independence from the combustion engine is achieved, but drive efficiency decreases and gasoline consumption increases
Solution Approach 1:
The patent combines mechanical power transmission and electrical power transmission into a hybrid drive system. The mechanical power branch transmits power directly from the combustion engine to the working equipment, while the electrical power branch uses a generator and electric motor to provide additional power. This merging allows the system to maintain high efficiency through mechanical power while achieving rotational speed independence through electrical power control.
2Adaptability or versatility
If a purely electrical drive system is used to provide independent rotational speed control for working equipment, then rotational speed independence from the combustion engine is achieved, but gasoline consumption increases
Solution Approach 1:
The patent implements partial electrical power assistance rather than full electrical drive. The electrical power branch provides only the necessary additional power to achieve the desired rotational speed independence, while the majority of power is supplied efficiently through the mechanical power branch. This partial action approach minimizes energy loss and gasoline consumption while still achieving the goal of rotational speed control.
3Use of energy by moving object
If mechanical power transmission is used to drive working equipment, then drive efficiency is maintained, but rotational speed control independence from the combustion engine is lost
Solution Approach 1:
The patent segments the power transmission system into two independent branches: a mechanical power branch for efficient power transmission and an electrical power branch for rotational speed control. The mechanical branch maintains high efficiency by direct mechanical coupling, while the electrical branch (with generator and electric motor) provides independent rotational speed control capability. This segmentation allows each branch to optimize for its specific function.
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 approach enhances drive efficiency by allowing for rotational speed control and matching energy requirements, reducing gasoline consumption and improving overall performance of working equipment.
Implementation Method 1
Positioned in the drive train of the tractor is a generator which is driven by an internal combustion engine, which generates electrical energy
Implementation Method 2
at least an electric motor is positioned in the planting equipment which performs the agricultural working function, the electric motor receives the electric supply and electrical energy
Data Source
AI summary
A device (1) for driving working equipment (2) which can be connected to an agricultural commercial vehicle. The commercial vehicle has a combustion engine (6) and a generator (9) which can be driven by the combustion engine (6). The commercial vehicle and/or the working equipment (2) have at least a hydraulic pump (5), for the supply of a hydraulic working circuit (3), and a mechanical connection (4), for driving the working equipment (2). At least one hydraulic pump (5) and/or the mechanical connection (4) can be driven electrically and/or mechanically, and can be driven with a controllable rotational speed by way of the power branching.