FAQ >> Tower Crane Superstructure

Tower Crane Superstructure

Engine

Shanghai Diesel D6114ZLG1 B engine with electronic control, rated output power 200kW, rated speed 1800 rpm., max. out torque 1100N.m, emission in compliance with European Construction Machinery Stage II.

Control System

Intelligent computer integrated program control system Is the key technology of the crane. PLC program controller is used, with combination of conventional electrics, to realize the function of logic control and electronic proportional control of the system, greatly improving safety, reliability and efficiency for crane operation. Crane operation can be shown by a larger computer display, and easy for man-machine interaction.

Hydraulic System

Electronic proportional control, with combination of close/open type circuit, constant power and variable displacement pump system. Hydraulic system: winch, luffing gear, slewing gear, tower jib backstop, travel gear, auxiliary assembly system.

Features:winch:lulling gear, travel gear are of open type system, main pump is constant power and variable displacement pump, variable displacement by hydraulic pilot control, with function of power limit and pressure cut-off, may satisfy the requirement of multiple actuator movement. Slewing gear is close type system, quick response, accurate control, stable starting, braking and direction change, no impact, may satisfy operation of frequent direction change and fine motion.

Winch

Main/auxiliary winch has same model, with independent drive and combination of two pumps for oil supply; disc type constant closed brake; main/auxiliary winch and turntable connected by pin shaft, easy for assembly. Drive motor, counterbalance valve, winch wire rope imported from Germany, max. line speed 120m/min., with good fine speed performance. Winch also features easy oil replacement, low noise, high efficiency and long service life.

Luffing Gear

Main/auxiliary winch has built-in speed reducer, and disc type constant closed brake; winch drum has a ratchet locking device to realize mechani- cal braking, safe and reliable. Main/auxiliary winch and turntable connected by pin shaft, easy for assembly. Drive motor, counterbalance valve, winch wire rope imported from Germany.

Slewing Gear

Slewing gear is arranged inside the front of turntable, made up by a planetary reducer, and internal meshed with slewing ring, hydraulic buffering, and with the function of free swing. Planetary reducer has a controllable constant-closed disc brake, working reliable and easy for maintenance.

Slewing Ring

Slewing ring is a 3-row roller type stewing bearing made by Xuzhou Rothe Erde, with reliable quality.

Superstructure Counterweight

Superstructure Counterweight 1:7.0t, 2 slabs

Superstructure Counterweight 2: 6.5t, 1 slab

Operator's Cabin

Operator's cabin is steel frame structure, front windshield has overall type safety glass, other glass is hardened glass, equipped with adjustable seat, all kinds of ergonomic designed instruments and controls, air-conditioner and CD player, and also with safety tools such as fire extinguisher and breaker.

Turntable

Turntable is structure of box type and single web plate, with good overall stability. Turntable is key structural part linked with crane superstructure and crane carrier for load bearing, with many mechanisms arranged on it, such as operator's cabin, winch, lulling gear, engine, gantry, boom and counterweight.

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