Automated Counterweight Mounting Control for Lifting Devices
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Solution Overview
Problem
Traditional large-tonnage cranes require two operators for manually mounting counterweights, leading to inefficiencies and safety risks due to improper cooperation.
Innovation Solution
A control method and apparatus that automatically control the positioning of a slewing pin and counterweight cylinder using proximity switches and position signals to facilitate safe and efficient mounting of counterweights on a lifting machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual mounting of counterweights is performed by two operators, then the process can be completed with simple equipment, but safety risks increase and efficiency decreases
Solution Approach 1:
The system performs self-positioning and self-locking operations. The slewing assembly automatically rotates to predetermined angles, the slewing pin automatically engages with the locking pin hole, and the counterweight cylinder automatically extends to secure the counterweight block, eliminating the need for manual observation and cooperation between operators
Solution Approach 2:
The system uses proximity switches to detect the position of the slewing pin relative to the locking pin hole. When the slewing pin is detected to be inserted into the locking pin hole, a position signal is triggered, providing feedback to the control system to confirm proper positioning before proceeding with the mounting action
2Manufacturing precision
If manual observation and cooperation are used for mounting counterweights, then equipment complexity is reduced, but the precision of positioning deteriorates
Solution Approach 1:
The patent replaces manual mechanical observation and positioning with an automated control system that uses proximity switches to detect positions and a control device to execute precise movements. The slewing assembly is controlled to rotate to predetermined angles, and the counterweight cylinder is controlled to extend or retract based on detected position signals
Solution Approach 2:
The proximity switch acts as an intermediary between the physical position of the slewing pin and the control system. It converts the physical positioning information into an electrical position signal that the control device can process, enabling precise automated control without direct human intervention
Data Source
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AI summary
The present application relates to the field of lifting technology, in particular to a control method and apparatus for mounting counterweights on a lifting machine, a device and a storage medium. The control method comprises: controlling a slewing assembly to rotate to a predetermined angle in response to a mounting start instruction; when the slewing assembly has rotated to the predetermined angle, controlling and adjusting a positional relationship between a slewing pin and a locking pin hole, and acquiring a first position signal triggered by the slewing pin. By controlling and adjusting the positional relationship between the slewing pin and the locking pin hole when the slewing assembly has rotated to a predetermined angle and acquiring the first position signal triggered by the slewing pin, and by controlling a counterweight cylinder to perform a mounting action on a counterweight block when the first position signal indicates that the slewing pin has been inserted into the locking pin hole, the mounted counterweight is automatically controlled, with no need of manual lifting based on manual observation, thereby effectively improving efficiency of mounting counterweights, and enhancing safety in mounting counterweights.