Tracked Vehicle Steering Compensation for Synchronized Pipe Laying
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Solution Overview
Problem
Tracked vehicles used in pipe laying operations face challenges in synchronized movement due to uneven ground and disturbances, leading to pipe misplacement or damage, as existing steering mechanisms, such as dual pedal systems, are difficult to maneuver for fine and quick adjustments.
Innovation Solution
A tracked vehicle with a pair of independent tracks and a pilot control module that includes a dual track drive pedal and joystick, coupled with a controller and solenoid-operated valves, allowing for simultaneous drive input to both tracks and enabling precise steering control through hydraulic fluid distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If dual pedal steering system is used, then steering functionality is provided, but fine and quick adjustments are difficult
Solution Approach 1:
The steering control is segmented into two independent systems: a dual pedal system for basic steering functionality and a joystick system for fine and quick adjustments. This segmentation allows each control mechanism to specialize in specific adjustment types, resolving the contradiction between operational ease and control precision.
Solution Approach 2:
The joystick acts as an intermediary control device that mediates between the operator's fine adjustment needs and the track steering system. It provides precise control input that is transmitted to the hydraulic system, enabling accurate steering corrections without the limitations of direct pedal manipulation.
2Stability of the object's composition
If single pedal mode is used, then even speed is ensured, but all steering functionality is removed
Solution Approach 1:
The system merges single pedal mode for speed synchronization with dual pedal mode and joystick control for steering functionality. The controller integrates inputs from both pedals and the joystick, combining the stability benefits of synchronized track operation with the steering capability needed for course corrections.
Solution Approach 2:
The pedal system is designed with multi-functionality, allowing it to operate in both single pedal mode (for synchronized speed control) and dual pedal mode (for steering). This universal design eliminates the need to choose between speed synchronization and steering capability, as both functions are available through the same control interface.
3Ease of operation
If dual pedal system is used, then steering control is available, but making quick adjustments is difficult
Solution Approach 1:
The joystick is positioned and configured for preliminary action, allowing operators to make quick steering adjustments without the mechanical delays associated with dual pedal manipulation. The direct coupling of the joystick to the hydraulic control system enables immediate response to steering commands, reducing correction time.
4Ease of operation
If conventional steering mechanism is used, then basic steering is achieved, but fine adjustments are difficult
Solution Approach 1:
The control system is made dynamic by allowing operators to switch between different control modes (dual pedal and joystick) depending on the situation. The joystick provides dynamic, fine-grained control for precise adjustments, while the pedal system provides stable baseline control, creating a flexible system that adapts to different operational requirements.
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
Enables precise and synchronized movement of tracked vehicles, reducing the likelihood of pipe misplacement or damage by allowing operators to make fine and quick adjustments, even in uneven terrain, through improved steering control.
Implementation Method 1
A pilot control module includes a dual track drive pedal and joystick, coupled with a controller and solenoid-operated valves, allowing for simultaneous drive input to both tracks and enabling precise steering control through hydraulic fluid distribution.
Implementation Method 2
steering of such tracked vehicles is primarily effectuated by causing one of the pair of tracks to travel at a different speed than the other resulting in a turn in direction to the left or to the right
Data Source
AI summary
A tracked vehicle, controller for the tracked vehicle, and a method performed thereon are provided that enable the pilot to steer the tracked vehicle using an existing joystick of the tracked vehicle.