Electric Mobile Forestry Machine Winch Layout
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Solution Overview
Problem
Conventional mobile forestry machines with internal combustion engines pose environmental hazards due to fuel and lubricant leaks, and their cable winch designs lead to unfavorable force flow and reduced performance.
Innovation Solution
A mobile forestry machine with an electric drive system featuring a battery as the primary energy source, where the battery is located at the front, the cable winch is adjacent to it, and the stanchion is next to the winch, allowing direct cable guidance without deflection, enhancing force flow and performance, and optionally includes a power generation device using bio-fuels to minimize environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a combustion engine is used as the primary energy source, then the forestry machine can operate with high power output, but environmental damage occurs due to fuel and lubricant leaks
Solution Approach 1:
The patent replaces the internal combustion engine with an electric motor as the drive system. The electric motor is powered by a battery pack, eliminating the need for combustion processes, fuel storage, and mineral oil lubrication systems. This substitution removes the source of environmental contamination while providing sufficient power for forestry operations through electrical energy conversion.
Solution Approach 2:
The patent changes the energy source parameter from chemical energy (combustion) to electrical energy. By using a battery-powered electric motor, the system transforms the primary energy source from fossil fuels to stored electrical energy, fundamentally altering how power is generated and delivered while eliminating harmful emissions and leaks associated with combustion engines.
2Device complexity
If the winch is positioned behind the drive motor, then the component layout is simplified, but the cable must be routed below the drive motor and deflected upwards at a pulley, resulting in unfavorable force flow and limited performance
Solution Approach 1:
The patent repositions the winch in the longitudinal dimension of the vehicle, placing it at the front rather than behind the drive motor. This spatial reconfiguration allows the cable to exit directly from the front of the winch and be routed upwards to the cable outlet on the partition, eliminating the need for complex routing below the drive motor and avoiding unfavorable force flow through pulley deflection.
3Power
If the winch is positioned at the front with direct cable guidance, then the force flow is favorable and performance is improved, but the battery must be positioned at the front which may affect weight distribution
Solution Approach 1:
The patent positions the battery in the longitudinal dimension at the front of the vehicle, adjacent to the winch. This arrangement enables direct cable guidance from the winch upwards to the cable outlet, creating favorable force flow and maximizing winch performance. The weight distribution challenge is managed through this spatial configuration, prioritizing operational effectiveness.
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 electric drive system reduces environmental risks, improves cable winch performance, and allows for efficient operation with bio-fuels, enabling safe and effective tree felling and transportation in forest areas.
Implementation Method 1
a battery is provided as the primary energy source which supplies the at least one electric drive motor with electrical energy
Implementation Method 2
an electric drive system which has at least one electric drive motor
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The invention relates to a mobile forestry machine (1) equipped with a chassis (2), a primary energy source, a winch (4), a stake (5), and an adjustable ramp blade (6), wherein the forestry machine (1) does not have a driver's workstation. The mobile forestry machine has an electric drive system comprising at least one electric drive motor and/or an electric motor (21) driving the winch (4), and in which a battery (3) is provided as the primary energy source, supplying electrical energy to the at least one drive motor and/or the electric motor (21) driving the winch (4). Viewed in the longitudinal direction (L) of the forestry machine (1), the battery (3) is located at the front, the winch (4) is adjacent to the battery (3), the stake (5) is adjacent to the winch (4), and the adjustable ramp blade (6) is located at the rear of the vehicle.