tower cranes

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All tower cranes consist of the same basic parts: The base is bolted to a large concrete pad that supports the crane. The base connects to the mast (or tower), which gives the tower crane its height. Attached to the top of the mast is the slewing unit -- the gear and motor -- that allows the crane to rotate: On top of the slewing unit are three parts: The long horizontal jib (or working arm), which is the portion of the crane that carries the load. A trolley runs along the jib to move the load in and out from the crane's center: The shorter horizontal machinery arm, which contains the crane's motors and electronics as well as the large concrete counter weights. The operator's cab The machinery arm contains the motor that lifts the load, along with the control electronics that drive it and the cable drum. The motors that drive the slewing unit are located above the unit's large gear. Due to the structure features, tower crane can work in a much larger space with multiple working styles and work faster and more efficiently with increased stability and safety. As a modern form of balance crane, the tower crane often gives the best combination of height and lifting capacity and is widely used in the constructions of tall buildings such as restaurant, industry high-rises and large-span industry factories. The series of tower crane has a horizontal jib frame, trolley travelling, hydraulic self-climbing, original mechanism, and a desirable shape. They can operate reliably with all safety devices well-equipped and have an improved working speed, a good speed control property, and a smooth and efficient working, which can widely apply to high-rise hotel, resident houses, high-rise industry buildings, large-span factory buildings, large chimneys and other high-tower buildings Specifications of tower crane 单位 Unit QZT400 TC7052 QZT260 TC7030 QZT160 6024 QZT125 6018 QZT100 5516/6010 QZT80 5512/5613 QZT63 5013/5510 QZT50 5008/4810 QZT40 4808/4708 QZT25 3506/3008 Max. Lifting Moment KN.m 4000 2600 1600 1250 1000 800 500 500 400 250 Max. Lifting Load T 25 12 10 8 8 8 6 4 4 2.5 Max. Working Amplitude m 70 70 60 60 60 56 55 50 48/46.8 35/30 Hoisting Height Independent m 50 48 50 50 50 46.2 40 30 29 25 Adhered m 205 205 200 180 180 151.2 151.2 120 120 60 Capacity at Max Jib Length T 5.2 3.0 2.4 1.8 1.6/1.0 1.2/1.3 1.3/1.0 0.8/1.0 0.8 0.6/0.8 Hoisting Speed A=2 m/min 40/80 20/40 100/50/7.4 101.5/51.83 101.5/49.11 80.4/41 82.3/42 70/35/7.7 70/35/7.5 27/13.5 A=4 m/min 50/25/3.7 49.11/25.08 51.83/25.08 39.4/20.1 41.2/21 35/17.5/3.75 35/17.5/3.75 Radius Changing Speed m/min 0—100 0—75 50 50 58.6/29.3/8.79 43.3/21.9 42/22 22/33 22/33 20 Swiveling Speed r/min 0.72 0.6 0.6 0.65 0.63 0.62 0.637 0.6 0.6 0.74 Climbing Speed m/min 0.46 0.45 0.45 0.4 0.4 0.4 0.4 0.6 0.6 0.6 Dead Load T 135 88 145 77.86 115.3 60.98 97 50.55 81.87 42.49 72.79 36 36 42 42.7 21.5 26/18 22/15 Mast Section Dimension mm 2500×2500×3000 2000×2000×3000 1935×1935×2500 1835×1835×2500 1833×1833×2500/2800 1833×1833×2500/2800 1833×1833×2500、1600×16003×2500 1494×1494×2200、1618×1618×2500 1494×1494×2200 1494×1494×2200 Matching Motor Frequency conversion motor Wound Rotor Motor、boost speed regulation、eddy current braking Wound Rotor Motor，transform，speed regulation，Stable Operation Dual-Speed Parallel Height of lifting beam mm 1500 1370 1370 1357 1357 1357 1040 1040 1040

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linqu yujian construction machinery co.,ltd

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