Automatic Steering Heating for Cold-Weather Work Vehicles
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Solution Overview
Problem
In low temperature environments, the increased viscosity of grease in the gear mechanism of automatic steering systems in work vehicles leads to higher motor torque, reducing operability and potentially disabling the automatic steering function, thereby decreasing convenience.
Innovation Solution
Incorporating a heat supply unit to maintain the grease at an optimal viscosity by supplying heat to the automatic steering mechanism, ensuring the automatic steering function remains operational and convenient in cold conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the automatic steering mechanism operates in low temperature environment, then the steering function is available, but the grease viscosity increases causing high motor torque and reduced operability
Solution Approach 1:
The heat supply unit activates before the automatic steering function is engaged in low temperature environments, pre-warming the grease in the gear case to maintain optimal viscosity. This preliminary heating action prevents the grease from being too viscous when steering is needed, ensuring both function availability and ease of operation.
Solution Approach 2:
The system changes the temperature parameter of the grease by supplying heat through the heat supply unit. By controlling the grease temperature to remain above a certain threshold, the system maintains appropriate viscosity levels, resolving the contradiction between maintaining steering function availability and ensuring ease of operation in cold conditions.
2Reliability
If the automatic steering function is disabled in low temperature environment to protect the steering motor, then the motor is protected from overload, but the convenience is reduced
Solution Approach 1:
The heat supply unit performs preliminary warming of the grease before the automatic steering function is activated. This advance preparation ensures that when the steering function operates, the grease viscosity is already at an acceptable level, preventing motor overload while maintaining convenience for the user.
Solution Approach 2:
The heat supply unit acts as an intermediary between the cold environment and the automatic steering mechanism. By introducing thermal energy as a mediating factor, the system enables the steering function to operate in low temperature conditions without subjecting the motor to harmful high torque loads, thus protecting the motor while preserving convenience.
3Ease of operation
If heat is supplied to the automatic steering mechanism, then the grease viscosity is maintained, but the device complexity increases
Solution Approach 1:
The heat supply unit is designed to automatically detect low temperature conditions and activate without requiring manual intervention. The system monitors environmental temperature or grease temperature and self-regulates the heating process, maintaining grease viscosity while minimizing the need for complex control systems and user interaction.
Solution Approach 2:
The heat supply unit serves multiple functions: it heats the grease to maintain viscosity, protects the motor from overload, and enables the automatic steering function to operate in cold conditions. By consolidating these related functions into a single component, the system reduces overall complexity compared to having separate systems for each 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
The heat supply unit effectively maintains the grease viscosity, preventing motor overload and ensuring the automatic steering function operates smoothly and conveniently in low temperature environments.
Implementation Method 1
a heat supply unit so provided as to supply heat to the automatic steering mechanism
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
[Problem] Provide a technology that can improve a convenience of the work vehicle having an automatic steering function. [Solution] An exemplary work vehicle (1) includes: a steering wheel (12); an automatic steering mechanism (20) that enables an automatic steering of the steering wheel(12); and a heat supply unit so provided as to supply heat (30, 30A, 30B) to the automatic steering mechanism (12). (Figure 4)