Working Machine Swing Bracket Interference Prevention
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Solution Overview
Problem
Existing working machines face challenges in preventing the boom and swing bracket from interfering with the operator section, leading to potential operational disruptions and safety hazards due to the lack of effective interference prevention mechanisms.
Innovation Solution
The implementation of a control system that includes a swing sensor, a boom sensor, and a controller to detect the positions of the swing bracket and boom, and automatically stop their movement when they approach the operator section, along with a stopping release switch to override this function, ensuring safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the swing bracket and boom are allowed to move freely without restriction, then the working range and operational flexibility are improved, but the risk of interference with the operator section increases
Solution Approach 1:
The control system continuously monitors the positions of the swing bracket and boom through sensors and automatically adjusts their movements to prevent interference with the operator section. The system provides real-time feedback control by detecting position and restricting movement when necessary, resolving the contradiction between maintaining working flexibility and preventing harmful interference.
2Reliability
If automatic position detection and movement restriction systems are implemented, then the safety and operational protection are improved, but the device complexity increases
Solution Approach 1:
The control system automatically monitors and protects the operator section without requiring manual intervention. The swing sensor and boom sensor continuously detect positions, and the controller autonomously determines when to restrict movements, enabling the system to self-regulate for safety while minimizing the need for complex manual control mechanisms.
3Manufacturing precision
If the swing bracket movement is automatically stopped at the center position, then the operational precision and positioning accuracy are improved, but the loss of time occurs due to automatic stopping
Solution Approach 1:
The control system is pre-programmed with the center position coordinates and automatically guides the swing bracket to this position when commanded. By having the stopping criteria and position data prepared in advance, the system can quickly and accurately stop at the center position without requiring complex real-time calculations, thereby minimizing time loss while maintaining positioning precision.
Data Source
AI summary
A working machine includes a machine body, a support bracket protruding forward from the machine body, a swing bracket pivotally supported by the support bracket to be capable of horizontally pivoting, a boom pivotally supported by the swing bracket to be capable of pivoting up and down, a swing sensor configured to detect a position of the swing bracket, and a controller configured to acquire a detection signal from the swing sensor and to control a swinging movement defined as a pivotal movement of the swing bracket. The controller includes a swinging stopper unit to stop the swinging movement when the swing bracket in the pivotal movement reaches a center position at which the boom is orientated in a forward direction of the machine body.