Friction test device based on torsional Hopkinson bar (THB)

A friction test device based on a torsional Hopkinson bar (THB), comprising a base, wherein the base is provided with a servo axial loading device, a baffle, and pull rods;

• the servo axial loading device comprises a first oil pressure tank and a first pressure rod;
• one end of the first pressure rod is embedded in the first oil pressure tank;
• the baffle comprises a front baffle and a rear baffle;
• the front baffle and the rear baffle are fixed on the base;
• the pull rods are arranged between the front baffle and the rear baffle;
• a loading guide rod is provided between the front baffle and the rear baffle;
• the first oil pressure tank is fixed on the front baffle;
• a constraint mass is fixed on the rear baffle;
• and the loading guide rod comprises a first end connected to the first pressure rod and a second end connected to the constraint mass through a specimen;
• the friction test device further comprises a torque application device and a torque storage device;
• the torque application device is configured to apply torque to the loading guide rod;
• and the torque storage device is configured to store the torque applied by the torque application device;
• the torque application device comprises a limit plate, a gear rack, a gear, and a sleeve;
• a fixed seat is provided on the base;
• the limit plate is provided at a top of the fixed seat;
• the gear rack is provided at a side wall of the fixed seat;
• the gear rack meshes with the gear;
• the gear is fixedly connected to the sleeve;
• the gear and the sleeve are sleeved on an outer side of the loading guide rod;
• the loading guide rod is fixedly connected to the sleeve through a positioning pin;
• and the torque application device is driven by a second oil pressure tank;
• and
• the torque storage device comprises a third oil pressure tank, a clamp plate, and a fixed plate;
• the fixed plate is provided at a top of the clamp plate;
• the third oil pressure tank is provided on the base;
• a third pressure rod is provided in the third oil pressure tank;
• the clamp plate comprises a fixed clamp plate and a movable clamp plate;
• the fixed clamp plate is fixedly provided on the base;
• a bottom of the movable clamp plate is provided with a castor;
• the castor is provided on the base;
• a side of the fixed clamp plate away from the movable clamp plate is provided with a fixed bracket;
• a side of the movable clamp plate away from the fixed clamp plate is connected to the third pressure rod;
• opposite sides of the fixed clamp plate and the movable clamp plate are respectively provided with two semicircular openings;
• the two semicircular openings form a circular hole;
• the loading guide rod runs through the circular hole;
• an edge of the circular hole is provided with a locking element;
• and an inner side of the locking element is provided with strip teeth.