Telescopic Boom Pin Detection for Precise Extension Control
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Solution Overview
Problem
Existing work machines, such as mobile cranes with telescopic booms, lack accurate detection methods for the positions of boom and cylinder connecting pins, hindering precise control of telescoping operations.
Innovation Solution
A work machine equipped with a first and second detection device that utilize different methods to detect the positions of the first and second pins, respectively, based on the rotation of a rotary member driven by a motor, enabling accurate control of telescopic boom operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single detection method is used for pin position detection, then the device complexity is reduced, but the measurement precision and reliability of telescoping control deteriorates
Solution Approach 1:
The detection system is segmented into two independent detection devices (first detection device and second detection device) that detect pin positions using different methods. This segmentation allows each device to specialize in specific detection tasks, improving overall measurement precision while maintaining manageable complexity through modular architecture.
Solution Approach 2:
The patent changes the detection parameters by employing different detection methods for the first and second detection devices. This parameter variation enables complementary detection capabilities that enhance measurement precision and reliability without requiring a single overly complex detection system.
2Reliability
If different detection methods are used for first and second detection devices, then the reliability of pin position detection is improved, but the device complexity increases
Solution Approach 1:
The detection system is divided into separate detection devices with different methods, allowing redundancy and cross-validation. This segmentation improves reliability by ensuring that if one detection method fails, the other can still provide accurate pin position information for safe telescoping operation.
Solution Approach 2:
The control unit receives detection results from both detection devices and uses feedback to verify pin positions. This feedback mechanism enhances reliability by cross-checking information from multiple sources before executing telescoping commands, ensuring accurate and safe operation.
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 control of telescopic boom operations by accurately detecting the positions of the connecting pins, enhancing the overall performance and reliability of the work machine.
Implementation Method 1
a first pin that is moved by a first spring to connect the boom and the actuator to each other
Implementation Method 2
a second pin that is moved by a second spring to connect adjacent booms of the booms
Data Source
Figure 1
Figure 2A~2E
Figure 3
AI summary
According to the present invention, a work machine comprises a plurality of booms that are extended and retracted by motive power from an actuator, a first pin that is moved by a first spring to connect the boom and the actuator and is moved by motive power from a motor to release a connection of the boom and the actuator, a second pin that is moved by a second spring to connect adjacent booms and is moved by motive power from the motor to release a connection of the adjacent booms, and a first detection device and a second detection device that detect the positions of the first pin and the second pin on the basis of the rotation of a rotary member that is rotated by motive power from the motor.