Force-Transmitting Unit for Vehicle Application Tools
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Solution Overview
Problem
Existing vehicle devices with application tools, such as mulchers, often require maintenance-intensive cardan joints for power transmission, leading to reduced service life and increased costs, while also limiting structural height and increasing the risk of material infiltration and vehicle instability on soft ground.
Innovation Solution
A vehicle device with a force-transmitting unit featuring a first drive wheel connected rotationally secure to the output shaft, oriented perpendicularly, and a pull means drive unit, such as a belt drive, which allows for secure and adjustable positioning of the application tool relative to the gear unit, eliminating the need for cardan joints and providing a compact, low-maintenance design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cardan joints are used for power transmission, then the application tool can be positioned at various angles, but maintenance requirements increase and service life decreases
Solution Approach 1:
The patent removes the cardan joint from the power transmission system entirely. Instead of using a cardan joint to accommodate angular misalignment, the invention uses a directly connected drive wheel that rotates with the output shaft, eliminating the maintenance-intensive cardan joint while preserving positioning flexibility through the pivot unit.
Solution Approach 2:
The patent replaces the mechanical cardan joint system with a different mechanical approach: a drive wheel directly connected to the output shaft that transmits power through a pivot unit. This substitution eliminates the wear-prone cardan joint while achieving the same functional goal of angled power transmission.
2Adaptability or versatility
If cardan joints are used for power transmission, then angular positioning is achieved, but structural height is limited
Solution Approach 1:
By removing the cardan joint and its associated structural constraints, the invention allows for greater structural height. The drive wheel is directly mounted on the output shaft, eliminating the need for the elongated cardan joint assembly and enabling a more compact vertical arrangement.
3Power
If cardan joints are used for power transmission, then power transmission is achieved, but material infiltration risk increases
Solution Approach 1:
The patent eliminates the cardan joint, which creates open spaces and gaps where material can infiltrate. The direct connection between the drive wheel and output shaft, combined with the enclosed pivot unit, prevents material from entering the power transmission mechanism, thereby reducing maintenance requirements and improving reliability.
4Power
If traditional power transmission systems are used, then power delivery is achieved, but vehicle stability on soft ground decreases
Solution Approach 1:
The patent changes the spatial arrangement of the power transmission system by mounting the drive wheel directly on the output shaft with its rotation axis perpendicular to the forward direction. This dimensional reconfiguration allows for a lower center of gravity and improved vehicle stability on soft ground, while maintaining full power delivery capability.
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 configuration enhances the service life of the vehicle device by reducing wear, minimizing material infiltration, and allowing for a larger pivot range, while also reducing the overall length and center of gravity, thereby minimizing the risk of sinking in soft ground and improving structural integrity.
Implementation Method 1
a pull means drive unit, such as a belt drive
Data Source
AI summary
The invention is based on a vehicle device having a drive unit, a gear unit which is at least substantially securely connected to the drive unit and which comprises an output shaft to drive an application tool which can be orientated relative to the gear unit, and a force-transmitting unit between the gear unit and the application tool. In order to provide a generic vehicle device having an advantageously long service-life, it is proposed that the force-transmitting unit have at least one first drive wheel which is connected to the output shaft in an at least substantially rotationally secure manner in at least one operating state and which has a rotation axis which is orientated at least substantially perpendicularly relative to a forward direction.