| 摘要 |
FIELD: mechanical engineering; load-lifting facilities. ^ SUBSTANCE: invention relates to load-lifting devices used for leveling different objects, for instance, slewing gears, repair sets of oil and gas wells, aircraft, etc., where accurate locking on any section of rod stroke for unlimited time is required. According to invention, support of hydraulic hoist is connected with jacket for axial displacement and is rigidly coupled with ring plunger. Spring is provided which is located from side of one of ring plunger side surfaces to press support through adjusting gasket installed from side of other side surface of plunger to inner bead of casing. Moreover, support, rod and jacket are coupled by means of key joint. ^ EFFECT: improved reliability. ^ 2 cl, 5 dwg |
