Tower Crane TC7021 Large Cranes Leg Base

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China main port
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1 unit
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30 unit/month

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Item specifice:

Maximum Lifting Weight: 12T Maximum Lifting Height(M): 200M Rated Loading Capacity: 2.1M
Span: 70M Rated Load Moment: 250T.M

Product Description:

Detail of Tower Crane

 

Feature:Tower Crane 

Condition:New         

Model Number:TC7021(QTZ250) 

Place of Origin: China (Mainland)       

Brand Name: CMAX     

Certification: ISO,CE 

Warranty: 1 Year       

Application:Building,Construction,Industrial 

 

Main Features of Tower Crane

 

Our tower crane is self-erecting and wall-attached tower crane, in addition to it's advanced parameters, reliable performance, well-looking appearance, and excellent quality.

 

It has characteristica such as long boom, largeworking coverage, hydraulic rising, and tandem mounted tower body.

 

It's design idea shows advantages including simple structure and good applicability, convenient maintainability, and lower price at the same time to emphasize meeting the requirement from construction units at different levels.

 

It's lifting height is obviously increased thanks to its self-erecting and wall attached function.

 

Specification of Tower Crane


 

Technical Sheet for TC7021

 

Free standing   height (m)

50

Max height   with attachment (m)

200

Working range   can be adjustedm

40455055606570

Min working   rangem

2.5

Max lifting   capacityt

12

Tip load @ 70mt

2.1

Hoist   mechanism (VFD+PLC)

Falls

2

4

Lifting   capacityt

03

06

06

012

Speedm/min

080

040

040

020

Motor

YZPBF250-4-55KW

Trolleying   mechanism (VFD+PLC)

Speedm/min

0-56

Motor

YPBE132M-4-7.5KW

Slewing   mechanism (VFD+PLC)

Speedr/min

0-0.6

Motor

YLEW112M-6-120N.M×2

Climbing speedm/min

0.5

Counterweightt

23.6

Mast section   sizeL×W×Hm

2×2×3

Working   temperature

-40+60

Total power (KW)

95

Power supply   requirement (KVA)

255KVA for   generator

Cable type (   within 30 meters from site power source to lower

 electric box of tower crane )

50mm23+2, 5 cores

Startup   voltage & current

380V×95%=361V  260A

Rated working   voltage & current

380V  146A

 

Loading diagram

 

70m jib length

R


18

22

24.5

27.7

28.3

30

32

35

37

40

a=2 (t)

6t—31.8m

5.96

5.35

5.00

4.54

a=4 (t)

12t—17.8m

11.29

8.99

7.94

6.86

6.69

6.23

5.76

5.15

4.80

4.34

R

42

45

47

50

52

55

57

60

62

65

67

70

a=2 (t)

4.27

3.91

3.69

3.40

3.23

2.99

2.84

2.64

2.52

2.35

2.25

2.10

a=4 (t)

4.07

3.71

3.49

3.20

3.03

2.79

2.64

2.44

2.32

2.15

2.05

1.90

 

65m jib length

R


20

22

25

27.7

30

31.8

32.4

35

35.9

37

a=2 (t)

6t—35.9m

5.79

a=4 (t)

12t—19.23m

11.49

10.32

8.92

7.92

7.21

6.72

6.57

5.99

5.80

5.59

R

40

42

45

47

50

52

55

57

60

62

65


a=2 (t)

5.27

4.96

4.56

4.31

3.99

3.79

3.52

3.35

3.13

2.99

2.80


a=4 (t)

5.07

4.76

4.36

4.11

3.79

3.59

3.32

3.15

2.93

2.79

2.60


 

60m jib length

R


22

25

27

30.6

31.8

32.4

35

37

40

a=2 (t)

6t—39.85m

5.98

a=4 (t)

12t—21.35m

11.60

10.05

9.21

7.96

7.61

7.45

6.79

6.35

5.78

R

42

45

47

50

52

55

57

60




a=2 (t)

5.64

5.18

4.91

4.55

4.33

4.03

3.85

3.60




a=4 (t)

5.44

4.98

4.71

4.35

4.13

3.83

3.65

3.40

















55m jib length

R


23

25

27

29

32.8

33.7

34.3

35

37

39

a=2 (t)

6t—42.70m

a=4 (t)

12t—22.87m

11.92

10.86

9.96

9.18

7.96

7.71

7.55

7.37

6.90

6.48

R

41

43

45

47

49

51

53

55




a=2 (t)

6t—42.70m

5.95

5.63

5.34

5.08

4.84

4.61

4.40




a=4 (t)

6.10

5.75

5.43

5.14

4.88

4.64

4.41

4.20





50m jib length

R


24

26

28

30

33.1

34.7

35.4

38


a=2 (t)

6t—43m

a=4 (t)

12t—23.04m

11.46

10.48

9.63

8.90

7.94

7.51

7.34

6.74


R

40

42

44

46

48

50






a=2 (t)

6t—43m

5.84

5.53

5.26

5.00






a=4 (t)

6.34

5.97

5.64

5.33

5.06

4.80


















 

45m jib length

R


25

27

29

31

33.6

34.9

35.6

37


a=2 (t)

6t—43.75m

a=4 (t)

12t—23.42m

11.16

10.23

9.43

8.74

7.96

7.61

7.44

7.10


R

39

41

43

45








a=2 (t)

6t—43.75m

5.80








a=4 (t)

6.67

6.28

5.92

5.60








 

40m jib length

R


24

26

28

30

32

34.1

35.1

35.8

38

40

a=2 (t)

6t—40m

a=4 (t)

12t—23.8m

11.90

10.88

10.01

9.25

8.59

7.98

7.71

7.53

7.02

6.60

 

 

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FAQ about Tower Crane

Q: What kind of steel used for  tower crane ?

A: Normally, as for the main force bearing steel structure, Q345B is adopted; as for the assistance force bearing steel structure Q235B is adopted. All of the raw material is outsourced from qualified steel factory in China.

 

Q: What about our  tower crane  warranty?

A: Usually there is one-year quality warranty including main electronic parts (not including consumable parts). There are consumable spare parts together with whole machine and normally they are enough for one year.

 

Q: What is 3 main mechanism of the  tower crane ?

A: there are trolleying mechanism/ slewing mechanism/ hoisting mechanism.

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Q:anybody know anything about the Crane Fireball Hi 4E ignition?
Hey Adam, Hmmm....not too sure about that one. But give this a shot. Check the threaded inserts in the coils (screw terminals), I have seen them break loose PLEASE tell me you are NOT running in race mode!!!.....Street bike run MUCH MUCH better with a VOES....adjust the VOES to 6 of vacuum...email if you don't know how to adjust them, it seems to be a little known fact to almost everyone that they ARE adjustable. Check the connections to the voes also. Reset set the static timing....set the TDC mark in line with front of the timing hole, this will be at 32 degrees, EVO's and TC's run better SLIGHTLY retarded. I would also throw on a fresh set of CARBON CORE plug wires. The Cranes don't seem to like Taylor style (spiral wound) wires. Check to see how it runs. Then try switching back to single spark and see what happens. If nothing changes, I am not too sure what it could be, other than the coil itself, without being able to see it first hand. If you do figure it out, let me know what you found.
Q:Did the popularity of the Karate Kid basically ruin the effectiveness of the crane kick?
Ummmm, assuming this is serious, the Crane Kick was basically made up for the movie. And it wasn't some magical technique, anyway. A guy standing on one leg really only has so many options available. That's why you never actually see anything like that in real competitions.
Q:what would you wish for if you had 1000 paper cranes?
before you start making the cranes, you should research their history. the story of 1,000 paper cranes is in fact very sad. it originated because a young girl was dying from cancer. she started making paper cranes but died before she made 1,000. i think she made around 600 of them. it all harks back to the bomb the USA dropped on japan, the girls cancer was caused from radiation. the crane, in japan, is a symbol of long-life, but 1,000 cranes to me is a symbol of the bomb the USA dropped on japan. i have in fact made several thousand cranes and had an exhibit of them. the girl started making cranes hoping she would live. she did not. before you make a wish on paper cranes, remember than. japanese culture and mythos is different from USA. it tends to have a bite.
Q:what are The performance parameters of tower cranes?
The technical performance of tower crane is expressed in a variety of parameters, the main parameters include the range, starting weight, lifting torque, free height, maximum heightand so on; its general parameters are: a variety of speed, structure, weight, size, tail size and gauge wheelbase, etc.
Q:What are Cranes and Derricks used for?
Cranes are used for lifting heavy equipment. Derricks are used to drill for oil. They are two different things.
Q:how do they erect those large tower cranes you see on big building projects?
with another crane. assemble the tower first in sections, assemble the jib on the ground then lift it into place
Q:How much do you know about construction cranes??
that depends, what do u need to know
Q:what can lead tower crane to blank out?
(1) tower crane has crack; (2)Brake block friction lining wear up to 50% ofRaw material thickness ; (3)Brake wheel surface wear reaches 5mm ~ 2mm (4)Spring has plastic deformation; (5)Lever system, air travelis more than about 10% of its rated trip
Q:Is Air Crane a Trademark-able name for a Rigid Airship used primarily for moving heavy objects from above?
It's okorder.com/.... Judging by the fact that a Google search results in many different companies/aircraft that incorporate the term 'air crane', I would say so. But it seems that the term is usually associated with heavy-lift rotorcraft. It also appears that the term is in the public domain. So, you could call it 'JV's Air Crane' or something like that. I've Googled SkyLift, AirLift, Zeplift- all taken However, DiriLift, DirigiLift,and ZepCrane yielded no results. *I relinquish all rights to these terms
Q:The arm of a crane at a construction site is 12.1 m long, and it makes an angle of 30° with the horizontal.?
(a) What is the magnitude of the maximum torque the crane can withstand if the maximum load the crane can handle is 500 N? τ = FL τ = 500(12.1cos30) τ = 5239.45 τ = 5240 Ν•m (b) What is the maximum load for this crane at an angle of 35° with the horizontal? τ = FL F = τ / L F = 5239.45 / 12.1cos35 F = 528.6109... F = 529 N I hope this helped. Please remember to vote a Best Answer from among your results. It's good karma as it keeps things in balanced exchange.

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