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          Tower Crane

          Home » Products » Tower Crane » QTZ80 Tower Crane
          Tower Crane

          The tower crane has lifting, slewing, luffing and jacking mechanisms, which can work respectively or together for higher efficiency. The jacking mechanism is used to make the tower rise or descend. The lifting mechanism adopts a multi-speed motor to realize fast, medium and slow working speed, so as to suit different demands. Free rotation of the rib, flexible traveling and accurate motions, all enable the tower crane to satisfy both vertical and horizontal transportation needs.

          The tower crane is equipped with many protection devices to ensure safe operation, such as a lifting load limiter, moment limiter, lifting height limiter, trolley travel Limiter and slewing limiter. Rest platform and guardrails are also available. The cab independently located on the side is spacious, aesthetically pleasing, and offers convenient operation.


          Attached type Independent type

          Two multiplying power lifting moment curve

          Four multiplying power lifting moment curve

          Lifting Performance Table
          Two Multiplying Power

          Range m 3-24 29 31 32 33 34 35 36 37
          Lifting capacity t 4 3. 185 2.933 2.818 2.710 2.609 2.514 2.424 2.338
          Range m 38 39 40 41 42 43 44 45 46
          Lifting capacity t 2.258 2.181 2.108 2.039 1.973 1.910 1.850 1.793 1.738
          Range m 47 48 49 50 51 52 53 54 55
          Lifting capacity t 1.685 1.635 1.587 1.540 1.496 1.453 1.412 1.372 1.3

          Four Multiplying Power

          Range m 3-13.221 14 16 18 20 22 24 26 28
          Lifting capacity t 8 7.509 6.469 5.659 5.012 4.482 4.040 3.667 3.346
          Range m 29 30 31 32 33 34 35 36 37
          Lifting capacity t 3.203 3.069 2.944 2.826 2.716 2.612 2.514 2.421 2.334
          Range m 38 39 40 41 42 43 44 45 46
          Lifting capacity t 2.251 2.172 2.098 2.026 1.959 1.894 1.833 1.774 1.717
          Range m 47 48 49 50 51 52 53 54 55
          Lifting capacity t 1.664 1.612 1.562 1.515 1.469 1.425 1.383 1.342 1.303

          Technical Performance Table

          Rated lifting moment kN.m 880
          Maximum lifting capacity t 8
          Working range m 3~55
          Lifting height Independent type 46.2
          Attached type 151.2
          Lifting speed Two multiplying power m/min 86/44
          Four multiplying power 43/22
          Slewing speed r/min 0.62
          Luffing speed m/min 43.3/21.9
          Jacking speed 0.4
          Minimum stable falling speed ≤7
          Whole machine shape and size Underbed m 8×8
          Whole machine height Independent type 55.892
          Attached type 160.892
          End of lifting arm to slewing center 56.17
          Tail of balance arm to slewing center 12.39
          Whole machine dead weight Structure weight Independent type t 43.57
          Attached type 83.55
          Balance weight 16.32
          Electric motor total capacity kW 47.73
          Permitted working temperature -20~+40
          Power supply parameter ~380V±10%, 50Hz

          Fittings List

          Machine load ability Lifting mechanism M5
          Slewing mechanism M4
          Luffing mechanism M4
          Lifting mechanism Electric motor Type YZRDW250M1-4/8
          Power(kW) 30/30
          Height limiter Type FKDX-G
          Steel rope Specification 6X37-15-1770
          Maximum traction force(N) 20000
          Multiplying power a=2 a=4
          Lifting speed (m/min) 86 44 43 22
          Rated lifting capacity (t) 2 4 4 8
          Minimum stable falling speed m/min ≤7
          Slewing mechanism Electric motor Type YZR132M2-6
          Power(kW) 3.7×2
          Rotating speed(r/min) 908
          Speed reducer Type XX4-100.180
          Transmission ratio 180
          Hydraulic coupling Type YOX280A
          Slewing small gear Modulus m 12
          Tooth quantity z 16
          Modification coefficient +0.5
          Slewing speed r/min 0.62
          Slewing bearing Single-row four-point contact ball type slewing bearing Type 011·45·1400
          Modulus m 12
          Tooth quantity z 131
          Hydraulic pressure jacking mechanism Electric motor Type Y132M-4B5
          Power (kW) 5.5
          Oil cylinder rated work pressure Mpa 25
          Maximum jacking force t 50
          Oil cylinder stroke mm 1600
          Installation distance mm 2070
          Oil cylinder diameter mm φ160
          Oil cylinder piston pole diameter mm φ110
          Jacking speed m/min 0.4
          Luffing mechanism Electric motor Type YDEJ132S-4/8
          Power (kW) 4.5/3
          Steel rope Specification 6×19-7.7-1550-Ⅰplating, right hinge
          Speed reducer Type BL22-43-3.3
          Transmission ratio 43
          Luffing speed m/min 43.3/21.9

          Shangdong Yongli Group is a China-based tower crane manufacturer, specializing in a great variety of construction machinery. Some of our products include concrete pump, topless tower crane, concrete mixer, concrete batching plant, and more.

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