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  • TEL:+86 139 3851 5989
  • FAX:86-037166987958
  • Email:service@zzchangli.com
  • Adress: 50 meters to the east of century plaza, shangjie district, zhengzhou city, henan province, China

Self-Elevating Tower Crane for construction

Self-Elevating Tower Crane for construction
  • Condition: New
  • Brand Name: YU JIE
  • Model: QTZ63
  • Certification: CE,ISO,SGS,BV
  • Place of Origin: Henan, China (Mainland)
Specifications & Technical Data
Parameter QTZ50 QTZ63 QTZ80 QTZ125 QTZ160
Max. Load(t) 5 6 8 8 10
Tip Load(t) 0.9 1.3 1.2 1.8 1.6
Jib Length(m) 42 50 55 55 65
Free Height(m) 30 40 45 45 50
Max. Height(m) 100 140 200 200 190
Mechanism
Speed
Hoisting
(m/min)
53.7/26.8/5.2 80/40/8.5 80/40 100/50 100/50
The ration of height to bottom supporting bearing size is too big,and the center of gravity of tower crane is high,torque is big,brake is frequent,impact is big; in order to increase its stability, we analysis the reasons for why tower crane tip:
1.Overload. Different types of tower crane uses lifting torque as the main control,when it is overload or the load capacity is over the rated load capacity,the tipping torque is over than its stable torque, it may bring the tower crane to tip.
2.Slant Load.When loading slantly,it will increase the tipping torque,will lead to the horizontal sub-force and vertical sub-force on the loading part and tipping force on the bottom support bearing part of crane, which will reduce the stability, caus tower crane to tip;
3.The foundation of tower crane is not even,durance is not enough, this will reduce the stability of tower crane;So we need to check and test the key factors to prevent the accidents;

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