Definition crawler crane

Crawler crane crawler device refers to a full-back rotation jib cranes. English name for crawler crane.
Commonly known as crawler cranes crawler cranes, crawler device refers to a full-back rotation jib cranes. English name for crawler crane.
Outline
Crawler crane (crawler crane), is a high-rise building construction of self-propelled cranes. Is a use of rotating boom crawler crane. Track ground area, through the good, adaptable, can travel with load for construction site lifting operations. Can be digging, rammed earth, piling and other operations. But walking slow transfer of the site requires additional vehicle handling.
Composition
Crawler crane from the power plant, Scissor lift bodies and boom, turntable, chassis and other components.
Boom:
For the assembly of multi-section truss structure, adjust the length of the section can be changed after the number, the lower end portion pivotally mounted on the stage turn the top with a luffing rope pulley hanging support, you can change its inclination.
There are also installed at the top of the boom jib, jib and boom into a certain angle. Hoisting mechanism with primary and secondary two winch system, the main winch system for boom hoist, auxiliary winch system for jib hoist.
Turntable:
By rotary support mounted on the chassis, the turntable can be transmitted to the entire weight of the chassis, on which a power plant, transmission, winch, control mechanism, such as balancing weight and the hangar. By rotating mechanism allows the power unit pallet jacks rotate 360 ​​°. Slewing from the upper and lower plate and roll during rolling pieces (bowls, roller) composition, the turntable can be passed to the full weight of the chassis, and to ensure the free rotation of the turntable.
Chassis:
Including travel agencies and walking devices: the former makes the crane walking back and forth and left and right turns; latter by the crawler frame, wheels, steering wheel, roller, carrier roller and track wheels and other components. Power plant through the vertical axis, horizontal axis and rotate the drive wheel chain drive, which led to the guide wheel and roller, so that machine rolling while walking along the track.