Durability testing device of self regulation function of brake clearance automatic adjusting arm of automobile

The invention discloses a durability testing device of a self regulation function of a brake clearance automatic adjusting arm of an automobile. The durability testing device of the self regulation function of the brake clearance automatic adjusting arm of the automobile comprises a base, brake shoe assemblies, a brake shoe shaft supporting block, a brake shoe pin, a trapezoid bolts, arc-shaped baffles, stand bars, tension springs, bearings, a bearing support plate, drawing rods, baffles, connecting cylinders, a coupler, a reducer, a servo motor, location rings, trapezoid nuts, pin rollers, an S-shaped cam, a brake shoe tension spring, a reset motor, a hubcap, a whole shat sleeve, a cam shaft sleeve, a spline shaft sleeve, slotting sphere great cylinder head screw, a spring cylinder, an air cylinder support, a rod of surveyor, an indicator needle, a force sensor connector, a force sensor, a threaded change-over lever, a pushing fork, a cardan joint assembly, a reset motor installation support, a linear bearing, a locating column, a displacement sensor and a displacement sensor shield. The durability testing device of the self regulation function of the brake clearance automatic adjusting arm of the automobile is simple in structure and convenient to operate.