FIELD: railway transport; rolling stock parking brakes. SUBSTANCE: lock has housing 1 accommodating taper collets 3 enclosing taper thrust tie-rod 7 passing through housing. Press-off cover 10 and front cover 4 are secured on housing by means of thread. Press-off bushing 12 is placed in central hole of cover 10. End face taper surface of bushing engages with end faces of collets 3. Pressure bushing 6 and pressure spring 8 are arranged between front cover 4 and end faces of collets 3. Expanding springs 13 are placed between collets 3. EFFECT: enhanced reliability of operation. 1 dwg
