Experimental apparatus and experimental method for stimulating dynamic loading

摘要

#$%^&*AU2017332964B220190328.pdf#####Abstract The present invention discloses an experimental apparatus and an experimental method for simulating dynamic loading, wherein, an upper box of the apparatus is fixed above the rack, the top of the upper box is a bevel surface, two chutes are provided in parallel to each other on the top of the upper box, a square opening is arranged at the bottom ends of the chutes, the square opening communicates with a bearing tray below the chutes, and a material hopper is arranged right above the chutes; a lead screw locking apparatus and a guide channel are arranged on the bottom of the rack, the movable bracket is arranged in the guide channel and can move along the guide channel, the bearing tray is supported via the movable bracket, the top of the bearing tray is connected to the piston rod of a hydraulic cylinder, and the angle of the bearing tray is changed by extending or retracting the piston rod of the hydraulic cylinder; the lead screw locking apparatus comprises a lead screw and a locking disc, the locking disc is driven to move as the lead screw is rotated, and the lead screw locking apparatus converts the rotation movement of the lead screw into the movement of the locking disc; the position of movable bracket is limited via the lead screw locking apparatus; a pressure sensor is arranged on the bottom of the bearing tray. With the hydraulic lifting apparatus and the lead screw locking apparatus in the present invention, the bearing tray can be moved quickly and accurately to an angle required for experiment.