Revolving Deck Tilt Sensor for Tower Crane Stability

The patent replaces complex mechanical monitoring systems with electronic tilt sensors that use accelerometer technology to detect crane inclination. This substitution maintains high reliability while reducing mechanical complexity, as the electronic sensors can detect multiple parameters (inclination angles, acceleration, rotation) simultaneously through integrated circuits rather than requiring separate mechanical measurement devices for each parameter.

The tilt sensor system performs multiple functions: monitoring crane inclination during setup, detecting operational stability, measuring rotation angles of the revolving deck, and providing data for both immediate safety alerts and long-term maintenance planning. This multi-functionality consolidates what would otherwise require multiple separate monitoring systems into a single integrated solution, improving reliability without proportionally increasing complexity.

The tilt sensors are installed on the revolving deck before the crane setup begins, allowing continuous monitoring from the earliest stages of assembly. This preliminary placement ensures that even minor inclination deviations during critical setup phases are detected immediately, with the sensors calibrated to account for the evolving crane configuration as components are added or removed.

The monitoring system dynamically adjusts its evaluation criteria based on the crane's current setup stage. During setup and taking down phases, the system accepts larger tolerance ranges as the structure is being assembled or disassembled, while maintaining strict precision requirements during operational phases. This dynamic approach allows comprehensive safety coverage without requiring maximum precision at all times, reducing the overall measurement precision burden.

The monitoring system uses periodic sampling of inclination data at optimized intervals rather than continuous processing. The tilt sensors take measurements at regular intervals (e.g., every second or every rotation cycle), which provides sufficient stability detection for operational purposes while dramatically reducing data processing requirements compared to true continuous monitoring. Critical safety parameters are checked at each interval to ensure immediate detection of dangerous conditions.

The system implements immediate feedback for critical safety parameters, where exceedance of predefined inclination thresholds triggers instant alerts and automatic shutdown commands without requiring extensive data analysis. This feedback mechanism ensures high reliability for safety-critical decisions while minimizing processing time, as the system only performs simple threshold comparisons rather than complex analytical processing for routine monitoring.