Road Roller Reversing Automation
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Solution Overview
Problem
Existing self-propelling road construction machines, such as road rollers, require manual coordination of seat rotation and travel speed during direction changes, which compromises operational safety and control efficiency.
Innovation Solution
A control device that automatically performs reversing processes, including deceleration, seat rotation, and acceleration changes, allowing the driver to focus on steering by integrating the operating element into a rotatable driver's seat, with automatic speed coordination and force-based control for acceleration and deceleration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual coordination of seat rotation and travel speed is used during direction changes, then the driver has direct control over both functions, but operational safety and control efficiency deteriorate due to the need for simultaneous coordination
Solution Approach 1:
The control device automatically performs the reversing process by coordinating seat rotation and travel speed without requiring manual intervention. The system serves itself by detecting the reversing command and autonomously managing the complex coordination between seat position and vehicle speed, thereby improving safety while maintaining ease of operation.
Solution Approach 2:
The manual mechanical coordination of seat rotation and travel speed control is replaced by an automated control system. The control device substitutes the manual mechanical operation with an automated process that manages both functions simultaneously, eliminating the safety risks associated with manual coordination.
2Ease of operation
If the driver manually coordinates seat rotation and travel speed during reversing, then direct control is maintained, but the driver's attention is分散ed from steering which reduces operational safety
Solution Approach 1:
The control device autonomously manages the coordination of seat rotation and travel speed during reversing operations. By implementing self-service automation, the system eliminates the need for the driver to divide attention between multiple control functions, allowing the driver to focus solely on steering while the system handles the complex reversing coordination automatically.
3Reliability
If automatic reversing process is implemented, then operational safety and control possibilities are improved, but device complexity increases due to integration of control functions
Solution Approach 1:
The control device merges multiple functions (seat rotation control, travel speed control, and reversing automation) into a single integrated system. By combining these functions, the patent reduces the number of separate control systems needed while achieving automatic reversing, thereby managing device complexity while improving operational safety.
Solution Approach 2:
The control device is designed as a multi-functional system that can perform both manual control operations and automatic reversing processes. This universal design allows the same control device to adapt to different operating modes, reducing the need for separate specialized systems and managing overall device complexity.
Data Source
AI summary
In a self-propelling road construction machine, particularly a road roller (1), comprising a travel drive, a steering device, a control device (30) for the travel drive and the steering device, and a driver's seat (5) rotatable by at least 180° and including an integrated operating element (8) for the vehicle speed, with the operating element (8) generating the control signals for the travel drive in dependence on the direction of the control movement of the operating element (8) or the direction of force application on the operating element (8), it is provided that, in response to a first switching command, the control device (30) will automatically perform a reversing process comprising deceleration, seat rotation, change of direction of travel, and acceleration to the set vehicle speed in opposite direction to the original direction of travel.