Work Vehicle Steering Disconnect for Low-Torque Manual Operation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional work vehicles with automatic steering mechanisms face reduced operability and driver fatigue during manual steering operations due to increased motor torque, especially during prolonged travel or when detaching and attaching work machines.
Innovation Solution
Incorporating a switching mechanism that toggles the power transmission state between the steering motor and shaft between a connection and shutoff state, allowing for seamless transition between automatic and manual steering to prevent motor resistance during manual operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the steering motor and steering shaft are always connected via a gear mechanism, then automatic steering function is ensured, but steering force increases during manual steering operations
Solution Approach 1:
The patent applies the dynamics principle by making the connection state between the steering motor and steering shaft changeable rather than fixed. The switching mechanism allows the system to dynamically transition between connected and disconnected states based on whether automatic or manual steering is being performed, thereby resolving the contradiction between ensuring automatic steering function and maintaining manual steering operability
2Extent of automation
If the steering motor and steering shaft are always connected via a gear mechanism, then automatic steering is maintained, but driver fatigue accumulates during prolonged manual operations
Solution Approach 1:
The switching mechanism enables dynamic adjustment of the power transmission state, allowing the system to adapt to prolonged operational durations. During extended manual steering operations, the mechanism can be switched to disconnect the steering motor, eliminating continuous motor resistance and reducing driver fatigue over time
3Extent of automation
If the steering motor and steering shaft are always connected via a gear mechanism, then automatic steering control is ensured, but steering torque increases during manual operations
Solution Approach 1:
The patent applies the extraction principle by removing the steering motor from the power transmission path during manual steering operations. The switching mechanism disconnects the steering motor from the steering shaft, extracting the source of motor resistance and thereby reducing the steering force required during manual operations
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
[Problem] To provide a technology that can improve convenience of a work vehicle that is provided to be capable of automatic steering. [Solution] An exemplary work vehicle includes a steering wheel, a steering shaft that supports the steering wheel, a steering motor that enables automatic steering of the steering wheel, and a switching mechanism that switches a power transmission state existing between the steering motor and the steering shaft between a connection state and a shutoff state.