| 摘要 |
FIELD: transportation. ^ SUBSTANCE: articulated truck includes truck tractor and semitrailer equipped with pneumatic braking system and connected between each other with the help of bolster. Bolster is arranged in the form of saddle located on truck tractor and pivot rigidly fixed on support sheet of semitrailer frame step. Groove of arched shape is arranged in support sheet of semitrailer frame step, and center of its generatrix is located on longitudinal axis of symmetry of pivot. Movably in its vertical plane block is installed, being equipped with teeth that interact with response teeth available on end surface of saddle inverted to the side of front part of truck tractor. Block is spring-loaded relative to frame of semitrailer by compression spring and contacts with wedge surface of slider, which is rigidly fixed on stem of pneumatic cylinder. Pneumatic cylinder is connected to pipelines of pneumatic braking system that supply braking chambers of semitrailer wheels. ^ EFFECT: elimination of articulated truck links in process of braking. ^ 3 dwg |
