Crane Hoisting Handle Deceleration Stopping for Low-Impact Emergency Braking
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Solution Overview
Problem
Existing crane control methods require rapid emergency stopping through a separate button, which demands high driver response speed and can cause severe braking impacts, leading to accidents like crane rollover and boom break due to unpredictable brake operation without speed judgment.
Innovation Solution
A method and apparatus that utilize real-time position offset information of the hoisting handle to generate displacement change rates, comparing them with preset thresholds to control deceleration stopping, enabling safe and rapid stopping through the hoisting handle alone, reducing driver reaction time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the brake is directly put into use for rapid emergency stopping, then the stopping speed is improved, but the braking impact increases causing crane rollover and boom break
Solution Approach 1:
The controller performs preliminary judgment of motor running speed before activating the brake. The system pre-assesses whether the motor speed exceeds the preset threshold value, and only activates the brake when the threshold is exceeded, preventing premature braking and reducing braking impact while maintaining rapid stopping capability when necessary
Solution Approach 2:
The controller continuously monitors the motor running speed in real-time and compares it with the preset threshold value. This feedback mechanism enables the system to dynamically adjust braking activation based on actual speed conditions, ensuring rapid stopping only when high speed is detected while avoiding unnecessary braking that would cause impact
2Reliability
If a separate emergency stopping button is used, then the stopping function is improved, but the driver response time requirement increases
Solution Approach 1:
The controller automatically detects handle operation state and motor running speed, and autonomously determines whether emergency stopping is required. The system serves itself by monitoring its own operational parameters and activating the brake without external intervention, eliminating the need for driver action and reducing response time loss
Solution Approach 2:
The handle operation is given multiple functions: it serves both as the normal control input for crane operation and as the trigger for emergency stopping detection. When the handle is quickly released from a non-neutral position, this action is universally interpreted as an emergency stopping request, combining normal control and emergency functions into a single interface
Data Source
AI summary
The present application relates to a stopping method and apparatus for a device with a hoisting mechanism and a crane. The method includes: generating a displacement change rate according to position offset information of a hoisting handle of the device when the position offset information meets a triggering condition; comparing the displacement change rate with a preset threshold to generate a stopping control instruction; and controlling an overhead system of the device to perform deceleration stopping according to the stopping control instruction. The stopping method and apparatus for the device with the hoisting mechanism, the crane, the electronic device and the computer readable medium involved in the present application may achieve the purpose of rapid stopping control only through the hoisting handle of the device, and reduce the requirement for the driver's reaction time and increase the safety of the device when emergency stopping is required.