FIELD: testing equipment for diagnostics of condition of wheel sets of rolling stock. SUBSTANCE: bed for dynamic tests includes frame, two electric motor drives with kinematic transmissions, test circuit, interconnected units of braking, control and logic. Bed is supplemented with tachometer, timer, limit switch anchored on U-shaped frame and hydraulic system comprising hydraulically operated hoist and hydraulic clamp, each linked to one of two motor-operated control valves. Test circuit comes in the form of two vibration transducers connected to inputs of vibration analyzer. Electric motor drives are joined to upper crossmember of U-shaped frame by means of joint levers of suspension interlinked by hydraulic clamp and are fitted with friction rollers positioned on both sides of box supports possessing recesses which house vibration transducers carrying magnetic grippers and vertical translation limiters and fixed on U- shaped frame above two three-link mechanisms hinged on both sides to ends of rails and center link carrying rest on one side and to hydraulically-operated hoist. Jointly with electric brake coupled to control unit and tachometer it is jointed to lower ends of vertical supports of U-shaped frame. EFFECT: increased automation of technology of dynamic tests of serviceability of journal boxes of wheel sets. 1 dwg
