| 摘要 |
FIELD: transport. ^ SUBSTANCE: truck incorporates a frame supporting the truck body, crane with a boom, the crane column being made up of an inner and outer pipes. Note that inner pipe is arranged to turn around its axis, while the outer pipe is mounted on a V-shaped housing trolley. The said trolley housing surface rollers to move in the guides one being fitted on the body side and the other one underneath the body bottom. The crane boom is rigidly fixed on the inner pipe top and furnished with the cable suspension span adjustment mechanism representing a cable-and-pulley system fitted with a drive accommodating a rotary unit. One end of the aforesaid system is connected to the load handling device, the other one, via the drive rotary unit, to the crane boom. Note that the drive represents a hydraulic cylinder arranged inside the inner pipe with its casing attached to the outer pipe lower part. The drive rotary unit is mounted on the hydraulic cylinder rod end to turn around it. The inner pipe is furnished with a ring gear to interact with the aforesaid drive. ^ EFFECT: higher reliability and reduced idle time. ^ 2 dwg |
