Tiltrotator Tool Lock Pressure Monitoring for Secure Attachment
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Solution Overview
Problem
Existing tiltrotators lack a reliable sensor system to ensure safe and secure attachment of tools, as position sensors can falsely indicate a locked position without actual hydraulic pressure, posing safety risks during tool exchanges.
Innovation Solution
A pressure monitoring system integrated with a position sensor verifies the hydraulic pressure and position of the locking block, ensuring secure tool attachment by confirming both conditions before allowing operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a position sensor is used to verify locking block position, then tool attachment status can be monitored, but false positive signals may occur when hydraulic pressure is insufficient
Solution Approach 1:
The patent combines a position sensor and a pressure sensor into an integrated monitoring system. The position sensor detects the locking block position while the pressure sensor monitors hydraulic pressure in the cylinder. Both signals are evaluated together by a control unit to determine actual attachment status, eliminating false positives from position-only detection.
Solution Approach 2:
The system implements feedback by continuously monitoring both position and pressure signals and comparing them against expected operational states. The control unit receives feedback from both sensors and only confirms secure attachment when both conditions are satisfied, providing reliable real-time status information to the operator.
2Ease of operation
If the locking block is biased towards locked position, then automatic locking is achieved, but operator awareness of actual locking status is reduced
Solution Approach 1:
The integrated monitoring system provides continuous feedback to the operator about the actual attachment status. The control unit processes both position and pressure sensor signals and provides clear indication only when secure attachment is confirmed, ensuring operator awareness despite the automatic locking mechanism.
Solution Approach 2:
The patent replaces reliance on mechanical position indication alone with an electronic sensing and evaluation system. Instead of depending on the mechanical locking block position alone, the system uses electronic sensors and control logic to determine and communicate the actual attachment status to the operator.
3Reliability
If multiple sensors are used to verify both position and pressure, then safety is improved, but device complexity increases
Solution Approach 1:
The patent merges the position sensing and pressure monitoring functions into a single integrated evaluation system. The control unit processes both sensor inputs together and provides a unified attachment status indication, reducing the complexity that would arise from separate independent verification systems.
Solution Approach 2:
The control unit serves multiple functions: it processes position sensor signals, processes pressure sensor signals, evaluates both conditions against safety criteria, and provides operator feedback. This multi-functionality consolidates what would otherwise require separate systems into a single versatile control unit.
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 integrated system provides a single sensor solution that ensures safe and reliable tool attachment, reducing operator uncertainty and preventing unsafe operations by requiring both hydraulic pressure and correct positioning verification.
Implementation Method 1
a pressure sensor for sensing a pressure in a hydraulic line between the first valve and a first pressure chamber of the hydraulic cylinder
Data Source
AI summary
A pressure monitoring system for a tiltrotator. The tiltrotator has a rotation motor, at least one tilting cylinder, a lower holder for holding a tool, a locking block for coupling a tool to the lower holder, a hydraulic cylinder for actuating the locking block between a closed and an open position, and a first valve for controlling the hydraulic cylinder to actuate the locking block between the closed and the open position. The pressure monitoring system includes: a pressure sensor for sensing a pressure in a hydraulic line between the first valve and a first pressure chamber of the hydraulic cylinder, a control unit configured to receive the sensed pressure from the pressure sensor and to verify that the first chamber of the hydraulic cylinder is pressurized to push the locking block towards the closed position based on the monitored pressure.