2results about How to "Meet the installation needs" patented technology

The application discloses a monitoring system and method for coal rock dynamic disaster and earthquake precursor monitoring, wherein the monitoring system comprises a control cabinet, a vector magnetic force observation device and a plurality of electromagnetic radiation monitoring devices; the electromagnetic radiation monitoring device comprises an explosion-proof shell, a mounting bracket and a plurality of magnetic field sensors; a slave controller, a slave memory, a high-speed data acquisition module and a slave communication module are arranged in the explosion-proof shell; the vector magnetic force observation device is used for monitoring the geomagnetism outside a mine; and the magnetic field sensors are used for magnetic field detection. The monitoring system and method can realize full waveform acquisition of electromagnetic signals in multiple points inside and outside the mine by the vector magnetic force observation device and the plurality of electromagnetic radiation monitoring devices, thereby providing reliable data support for the coal rock dynamic disaster and the earthquake precursor; and the magnetic field sensors are installed in an angle-adjustable mode, so that magnetic field signal acquisition at different angles is realized, and the acquisition needs in different space environments inside the mine are met.

An independent air suspension supporting arm relates to the technical field of vehicle accessories and comprises an air bag supporting arm and a shock absorber supporting arm, the air bag supporting arm and the shock absorber supporting arm are integrally formed, an air bag mounting hole is formed in the connecting position of the air bag supporting arm and the shock absorber supporting arm, and the end of the air bag supporting arm is arranged to be a mounting end. The bottom of the air bag supporting arm is sequentially provided with a plurality of special-shaped structure grooves from the mounting end to the shock absorber supporting arm in the extending direction of the air bag supporting arm. And a shock absorber mounting hole is formed in the end part of the shock absorber supporting arm. The air bag supporting arm and the shock absorber supporting arm are integrated, the forming efficiency can be improved, the production cost can be reduced, the connecting strength and rigidity can be improved, and the product quality and the use safety can be improved.