| 摘要 |
FIELD: railway transport; repair of rail vehicle bogies. ^ SUBSTANCE: to press axle-box liner to support surface of side frame use is made of spring-loaded pressure plate attached to lower plate of presser. Preliminary curving of laps of liner is done by frames rigidly attached to upper plate of pressure. Aligning of axes of symmetry of device and support surface of side frame at mounting in axle-box aperture is provided automatically by use of two catchers secured on front and rear walls of housing being essentially two pairs of levers with two pairs of pawls. Levers of each pair are intercoupled and their working surfaces are closed by action of spring, distance between them being less than width of guide of axle box. Fastening of device in axle-box aperture is provided by two pairs of grips. At beginning of downwards movement of presser, grips close around side frame and they remain closed during downward movement of presser. After completion of upsetting of liner, with presser moving upwards, pins on end section of shaped slot act onto grips moving them apart releasing side frame from device. To level up forces between holdowns at upsetting of liner, the hold-downs are provided with inserts made of elastic material secured by bolts between replaceable working plates and hold-downs. ^ EFFECT: increased capacity and improved quality of repair of bogie side frames. ^ 6 dwg |
