Real-time detecting system for the mechanical quality state of ballast bed based on tamping car

A tamping car-based system for detecting a mechanical quality state of a ballast bed in real time, comprising a track lining apparatus and two tamping apparatuses arranged in parallel;

• wherein the track lining apparatus comprises two track lining hydro-cylinders, the track lining hydro-cylinders communicate with a hydraulic control system through an oil inlet pipeline and an oil return pipeline;
• pressure sensors configured to detect pressures of the pipelines are arranged on both the oil inlet pipeline and the oil return pipeline;
• the tamping apparatus comprises two pairs of tamping components arranged on both sides, the tamping component comprises a pair of packer arms and two pairs of packers;
• a dynamic force sensor is provided at a joint between the packer arm and the packer, and the dynamic force sensor can detect a transient dynamic downward insertion force generated when the packer is inserted into the ballast bed;
• further comprising a data processing unit, wherein the data processing unit is electrically connected with the pressure sensors and can receive pipeline pressures detected by the pressure sensors and output a thrust of a piston rod;
• wherein the pressure sensor is a diffused silicon pressure transmitter, and the diffused silicon pressure transmitter is connected to the oil inlet pipeline or the oil return pipeline through an impulse pipe;
• wherein the two track lining hydro-cylinders are arranged in a cross-parallel manner.