Electric Motor Verge Mower with Coolant Cooling
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Solution Overview
Problem
Existing verge-cutting mower devices for roadside maintenance rely on hydraulic motors, which are polluting, difficult to cool, and complex to maintain, failing to provide reliable and efficient power.
Innovation Solution
An electric motor-driven verge-cutting mower device with a current generator connected to the agricultural machine's power take-off via a multiplier, utilizing a biodegradable coolant fluid for cooling, and a variator for speed regulation, directly implanted on the cutting/grinding equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If hydraulic motors are used to actuate the cutting/grinding equipment, then the equipment can be powered effectively, but the device creates pollution, is difficult to cool, and complex to maintain
Solution Approach 1:
The patent replaces the hydraulic motor system with an electric motor system. The electric motor is driven by a generator connected to the agricultural machine's power take-off, substituting hydraulic fluid power with electrical power. This eliminates hydraulic fluid leakage and pollution while maintaining effective power delivery to the cutting/grinding equipment
Solution Approach 2:
The patent introduces a coolant fluid circulation system to manage thermal effects. The coolant fluid flows through cooling circuits for the generator, electric motor, and variator, enabling effective heat dissipation. This addresses the cooling difficulty by implementing a structured thermal management system using fluid circulation and heat exchangers
2Power
If hydraulic motors are used to actuate the cutting/grinding equipment, then the equipment can be powered effectively, but the device is difficult to cool
Solution Approach 1:
The patent implements a coolant fluid circulation system with cooling circuits for the generator, electric motor, and variator. The coolant flows through these circuits and is cooled by heat exchangers (coolers), creating an effective thermal management system that addresses the cooling difficulty of high-power components
Solution Approach 2:
The patent introduces a coolant fluid as an intermediary substance to transfer heat from the generator, electric motor, and variator to external coolers. This intermediary cooling system enables effective heat dissipation without requiring direct cooling of the power components themselves
3Power
If hydraulic motors are used to actuate the cutting/grinding equipment, then the equipment can be powered effectively, but the device is complex to maintain
Solution Approach 1:
The patent replaces the hydraulic motor system with an electric motor system driven by a generator. This substitution eliminates hydraulic pumps, hydraulic motors, and associated fluid management components, resulting in a simpler system with fewer moving parts and easier maintenance requirements while maintaining effective power delivery
Solution Approach 2:
The patent extracts and removes the hydraulic system components from the device. By eliminating the hydraulic motor and its supporting infrastructure (hydraulic fluid reservoirs, pumps, hoses, filters), the system becomes simpler and easier to maintain, keeping only the electric motor, generator, and coolant cooling system
4Object-generated harmful factors
If an electric motor is used instead of hydraulic motor, then pollution is reduced and maintenance is simplified, but the device requires additional components like generator and cooling systems
Solution Approach 1:
The patent makes the generator serve multiple functions: it converts mechanical energy from the power take-off to electrical energy for the electric motor, and it can be cooled by the same coolant system that cools the electric motor and variator. This multi-functionality reduces the need for separate dedicated cooling systems for each component
Solution Approach 2:
The patent merges the cooling systems for the generator, electric motor, and variator into a single integrated coolant circulation system. The coolant flows through all three components and is cooled by external coolers, combining what would otherwise be separate cooling systems into one unified thermal management system
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
The solution offers a reliable, compact, and high-power system with reduced pollution, noise, and maintenance complexity, providing flexible speed control and energy efficiency.
Implementation Method 1
actuated by means of a motor, characterized in that said motor is electric
Implementation Method 2
the electric motor is connected to a current generator in order to provide it with the electrical energy it needs
Implementation Method 3
one or a plurality of the elements from amongst the current generator, the electric motor and the variator is/are cooled; the cooling is carried out by means of a coolant fluid
Data Source
AI summary
A verge-cutting mower device (20, 30), for example for maintaining roadside verges, has at least one frame (16) intended to be mounted on an automotive agricultural machine (10) and on which there is mounted a piece of cutting/grinding equipment (20) intended to mow or grind plants. The cutting/grinding equipment (20) is actuated using an electric motor (33).