QTZ80 Tower Crane

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QTZ80 tower crane

Model:QTZ80 QTZ series tower crane is a kind of upper-slewing fixed type light crane. It can be used into e very kind of industrial and civil construction, especially suit for the construction site which is narrow and landform is complicated. Tower crane has lifting, slewing and luffing mechanisms. They can work respectively or together to raise working efficiency. Lifting mechanism adopts double-speed electromotor, it has two kinds of work speed: lifting and slowly in position, so as to satisfy different work requirement. Jib can rotate 360°freely. Level arm frame, trolley range-changing, agile and reliable, li fting in position is accurate. It can satisfy vertical and level transport demand of  construction at a time. Safety devices of this tower crane are reliable, it is equipped with reliable mechanical type moment limiter and lifting weight limiter, it also has lifting height、work range and slewing l imiters, so as to ensure the work safety. This tower crane is designed reasonably, quality is high, structure is compact, and operation is convenient; it is an ideal lifting machine of construction team. Details

QTZ80 lifting moment curve

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Figure 2 Two multiplying power lifting moment curve

Figure 3 Four multiplying power lifting moment curve

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Lifting performance table

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

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

1.334

48

Table 1 Two 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

47

48

49

50

51

52

53

54

55

1.664

1.612

1.562

1.515

1.469

1.425

1.383

1.342

1.303

Range

m

Lifting capacity t

Table2 Four multiplying power 

Technical performance table Rated lifting moment Maximum lifting capacity

kN.m

880

t

8 3～55

Work range Independent type

m

46.2

Lifting height Attached type

151.2

Two multiplying power  Lifting speed

86/44 m/min

Four multiplying power  Slewing speed

43/22 r/min

Luffing speed

43.3/21.9

Jacking speed

m/min

0.4

Minimum stable falling speed

≤7

Underbed

8×8

Whole machine shape and size

whole machine height

Independent type Attached type

55.892 m

Whole Structure Independent type machine weight Attached type dead weight balance weight

160.892 56.17

End of lifting arm to slewing center  Tail of balance arm to slewing center

12.39 43.57 t

83.55 16.32

Electromotor aggregate capacity

kW

47.73

Permitted work temperature

℃

-20～+40

50Hz

～380V±10%

Power supply parameter

2.5

0.62

Main technical data

c: mydocument/indra.com 4 of 6 Lifting mechanism Machine load ability

M5

Slewing mechanism

M4

Luffing mechanism

M4

Type

YZRDW250M1-4/8

Electromotor  Power(kW) Height limiter

Lifting mechanism

Type

FKDX-G

Specification

6X37-15-1770-Ⅰ-platingright hinge

Steel rope Maximum traction force(N)

Multiplying power 

a=2

Lifting speed (m/min) 86 Rated lifting capacity (t) Minimum stable falling speed Slewing mechanism

30/30

2

20000 a=4

44

43

22

4

4

8

m/min

≤7

Type

YZR132M2-6

Electromotor  Power(kW)

3.7×2

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908

Type

XX4-100.180

Speed reducer  Transmission ratio Hydraulic coupling

180

Type

YOX280A

Modulus m

12

Slewing small gear 

Tooth quantity

z

16

＋0.5

Modification coefficient Slewing speed

Slewing support

Single-row four-points contacting ball type slewing support

r/min

0.62

Type

011·45·1400

Modulus m

12

Tooth quantity

z

131

Type Electromotor 

Hydraulic  pressure  jacking mechanism

Oil cylinder rated work pressure Maximum jacking force

Y132M-4B5

Power （kW）

5.5

Mpa

25

t

50

Oil cylinder trip

mm

1600

Installing space

mm

2070

Oil cylinder diameter

mm

φ160

Oil cylinder piston  pole diameter 

mm

φ110

Jacking speed

m/min

0.4

Type

YDEJ132S-4/8

Electromotor  Power (kW) Luffing mechanism

Steel rope

4.5/3

Specification

6×19-7.7-1550-plating-right hinge

Type

BL22-43-3.3

Speed reducer  Transmission ratio Luffing speed

43

m/min

43.3/21.9

Main structure component list Height×cross-section size Main limb ma teria l

2500×1835×1835 Square pipe 135×135×12-2500

Square pipe 135×135×10-2500

Strengthen sections 6sections

Standard sections 12sections

Tower  Bolt  body

M36×3×350 Grade 10.9

High strength bolt Nut

M36×3

Strengthen sections

851kg

Standard sections

786kg

Grade 10

Weight

Lifting arm

Length

First section

Second section

6000

Upper chord material

Angle steel square assembly ∠80×8-5238 Q235C

Lower chord material

Angle steel square assembly ∠100×8-5800 Q235C

Length

6000

Upper chord material

Angle steel square assembly ∠80×8－5760 Q235C

Lower chord material

Angle steel square assembly ∠100×8-5864 Q235C

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Length

Third section

Upper chord material

Angle steel square assembly ∠80×8-(617＋4942)Q235C

Lower chord material

Angle steel square assembly ∠100×8-5864 Q235C

Length

Fourth section

Angle steel square assembly ∠80×8－5760 Q235C

Lower chord material

Angle steel square assembly ∠80×8－5864 Q235C

Angle steel square assembly ∠80×8－5760 Q235C

Lower chord material

Angle steel square assembly ∠80×8－5864 Q235C

Seventh section

6000

Upper chord material

Angle steel square assembly ∠80×8－5760 Q235C

Lower chord material

Angle steel square assembly ∠75×6－5864 Q235C

Length Lifting

6000

Upper chord material

Length

Sixth section

6000

Upper chord material

Length

Fifth section

6000

6000

Upper chord material

Angle steel square assembly ∠80×8－（5042＋507） Q235C

Lower chord material

Angle steel square assembly ∠75×6－5864 Q235C

arm

Length

Eighth section

Upper chord material

Angle steel square assembly ∠80×8－5760 Q235C

Lower chord material

Angle steel square assembly ∠75×6－5864 Q235C

Length

 Ninth section

4525

Upper chord material

Angle steel square assembly ∠80×8－4285 Q235C

Lower chord material

Angle steel square assembly ∠75×6－4399 Q235C

Length Tenth section

6000

2735

Upper chord material

Angle steel square assembly ∠75×6－1661 Q235C

Lower chord material

Angle steel square assembly ∠75×6－2745 Q235C