Tubular Elevator Verification Latch for Operator Error Prevention
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Solution Overview
Problem
Current latch-and-lock systems in elevators are susceptible to operator error, leading to unsafe working conditions and damage, causing unexpected and costly delays in oil production environments.
Innovation Solution
A latch-and-lock system with a verification lock mechanism that includes a verification lock body, a detection pin, and a spring, ensuring the system is properly secured before allowing the lock handle to be disengaged, thereby preventing operator errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional latch-and-lock system is used, then the structure is simple and easy to operate, but operator errors occur leading to unsafe working conditions
Solution Approach 1:
The verification lock pin performs a preliminary verification action before the lock handle can be disengaged. The detection pin must first confirm proper engagement of the locking latch with the catch, and only then does the verification lock pin move to allow handle operation. This preliminary verification prevents operator errors by ensuring the elevator is securely locked before any unlocking attempt.
Solution Approach 2:
The verification lock pin acts as an intermediary element between the locking latch and the lock handle. It mediates the unlocking process by physically blocking the handle's movement until the detection pin confirms proper engagement. This intermediary mechanism ensures that the simple handle operation does not bypass safety checks.
2Reliability
If a verification lock mechanism is added, then operator errors are prevented, but the device complexity increases
Solution Approach 1:
The verification lock mechanism is merged with the existing latch-and-lock system rather than being a separate independent system. The detection pin, verification lock pin, and spring are integrated into the same structural space as the catch and locking latch, sharing common mounting points and operational sequences. This merging reduces overall system complexity compared to having entirely separate verification and locking systems.
Solution Approach 2:
The verification lock mechanism is self-actuating through the spring-loaded detection pin. When the locking latch engages the catch, the detection pin automatically moves to trigger the verification lock pin, which then automatically retracts to allow handle operation. No additional actuators, motors, or complex control systems are needed—the mechanism serves itself through mechanical feedback.
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 system reduces operator errors by ensuring the elevator is securely locked, enhancing safety and reducing the risk of damage and delays in oil production operations.
Implementation Method 1
a spring disposed within the verification lock body and surrounding the verification lock pin
Data Source
AI summary
An apparatus for a pipe handling system includes a first bail, a second bail, and a pipe elevator coupled to the first bail and the second bail. The pipe elevator includes a main body, a door, and a latch-and-lock system. The latch-and-lock system includes a catch coupled to the main body, a lock handle coupled to the door, a locking latch coupled to the door, and a verification lock coupled to the door. The verification lock includes a verification lock body, a verification lock pin partially disposed within the verification lock body, a detection pin coupled to the verification lock pin, and a spring disposed within the verification lock body and surrounding the verification lock pin. The verification lock body includes an elongated portion and a body detection pin slot.