Tower Crane 250 TM Spare Parts TC7021 New

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Item specifice:

Maximum Lifting Weight: 12T Maximum Lifting Height(M): 200M Rated Loading Capacity: 2.1T
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

 

1) This kind of crane adopts standard section hydraulic lifting and connecting.The max. height can reach 180m with wall tie ins.

 

2) It has high working speed, good speed-adjusting performance, steady operation and high efficiency. Three-speed motor and mono-speed ratio decelerator are applied in the lifting struction, which enables heavy load low speed and light load high speed.


3)The range-change structure drives the trolley moving on the horizontal crang jib, with good positioning performance. Planet gear decelerator is applied in the circumgyrating structure, together with moment-limiting hydraulic coupler, which can relize high load capacity, steady starting and reliable operation.

 

4) The crane has complete set of safety devices, which can guarantee the safe and high efficienct operation. The crane is equipped with lifting height limiter, trolley ranging limiter, moment limiter, weight limiter etc..

 

5)The cranehas scientific layout and handsome appearance. The drivers cab is set independently on one side, with good vision field. It creates a good working environment for the operator.

 

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

 

 Images of Tower Crane

 

Tower Crane Max. lifting Weight 10T  in China

Tower Crane Main Section TC5613 in China

Tower Crane Main Section TC5613 in China

Tower Crane Max. lifting Weight 10T  in China

 

FAQ about Tower Crane

 

Q: What serice you could provide?

A: Providing timely delivery, standby engineers are ready to slove any of your problem

    Providing all-embraced warranty of products quality, worksite installation guidance

    Providing ample spare parts and training of operation and maintenance

    Engineers have more than 20 years' experience in tower crane, ready to solve any of your  problems.

 

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.

 

Q: Can you equip with light on  tower crane  jib, monitor, remote control and anemometer?

A: Sure. All of these could be provided with extra cost upon the clients' requirements. But according to general practice, remote control is not suggested because most of the operator feedback operation in the cabin will provide a wide working view.


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Q:What measures should be taken to make tower cranes stable?
The fatigue test data show that the fatigue life of the phosphating coating of steel wire rope is about 3 times of the same structure light steel wire rope (laboratory comparable conditions), not easy to wear and corrosion is not easy to cause the service life of wire rope large amplitude extension. Manganese phosphating is wear resistant phosphating, which can solve the wear problem in the use of wire rope and improve the corrosion resistance. It is for reference only
Q:What are the characteristics of a tower crane?
Two, according to the structure characteristics of the boom can be divided into the pitching amplitude boom (boom) and trolley jib tower crane (arms).Luffing jib tower crane luffing jib by lifting does not achieve the amplitude, the utility model can give full play to the effective height of the boom, simple mechanism.Trolley jib tower crane is installed on the level of the boom on the track trolley achieve amplitude, the utility model has the advantages of large amplitude range, trolley can near the tower, can load amplitude, the shortcoming is: the boom stress on the structure of complex, high requirements, and the boom and the car must be in the building the upper part of the spire, the installation height should be higher than the roof of buildings 15-20 meters.Three, according to the turret structure, the rotation mode can be divided into lower slewing (turret rotation) and upper slewing (turret not slewing) tower crane.Under the rotary tower crane slewing bearing, balance weight mechanism are arranged on the lower end of the main tower, its advantages are: less bending, low gravity, good stability, convenient installation and maintenance, the disadvantage is the higher requirement to the slewing bearing, installation height is limited.The slewing tower crane is characterized in that the slewing bearing is balanced and the main mechanisms are arranged at the upper end, and the advantage of the utility model is that the lower part of the tower body can be simplified, and the lifting and the adding of the joint can be simplified because the tower body is not turned. The disadvantage is: when the building exceeds the tower height, due to the influence of the balance arm, limit the slewing of the crane, at the same time, the center of gravity is higher, the air pressure increases, the weight increases, so that the total weight of the whole machine increases.
Q:Method for operating tower crane
In the 2.11 operation, when lifting the weight, the weight should be higher than the height of the obstacle, at least 100mm.2.12 when the crane is approaching the track limit, it should slow down and stop in advance.2.13 when lifting heavy objects, not heavy lifting suspension instability, no additional weight in lifting objects, lifting scattered materials or special-shaped components must be used when the wire rope firmly tied to heavy lifting from the ground about 50cm stop, determine the brake materials, lashing and rigging, confirmation before lifting command.2.14 cranes must be adequately illuminated at night.2.15 crane in the stop, rest or midway power failure, the weight should be unloaded, not to weight suspended in the air.2.16 the operating room, no personnel shall enter, prohibited flammable and impede the operation of the items.2.17 is strictly prohibited or promotion personnel riding crane. Landing weight, weight is prohibited to stand.2.18 the boom and lifting pieces of cranes must be in safe distance from overhead transmission lines, and shall comply with the provisions of this schedule 30.1.6.2.19, two cranes in a track or two parallel or vertical orbit on the operation, should maintain the safety of any part of the distance between two machines, the minimum shall not be less than 5m.2.20 in case of any of the following circumstances, suspension operation shall be suspended:1., in the event of bad weather, such as heavy rain, heavy snow, fog and construction work surface has six (including six) above the strong winds, affecting safety construction.2. crane leakage occurs.3. serious wear of wire rope, to scrap standard (wire rope scrap standard see Appendix A).4. safety guards fail or display inaccurate.
Q:Which kind is better, gantry crane or tower crane?
Each has advantages, the use of different conditions, the use of different cranes, tower cranes can not move, but the lifting height can be very high, the door machine has tracks can be vertical and horizontal movements, lifting height, tower crane is not high.
Q:How many tons of tower crane QTZ80A lifting?
QTZ80A 80 refers to the lifting torque of 80 tons after lifting meters.
Q:Examples of filling and acceptance forms for tower cranes and examples of filling in.
4 data filled in the requirements of the project, in addition to fill in the above sign, but also need to fill in the corresponding data. Data that needs to be filled in should be separated by "/" or "," and, if necessary, distinguished by text or graphic.
Q:What courses should I take to buy the tower crane to be installed?
First in, in construction projects, and so on arrival booking use state, from the construction project into fixed assets. Increase in fixed assets, depreciation from the beginning of next month
Q:What is the difference between lifting height of tower crane and independent height?
Of course there is a difference. Independent height refers to the highest height of tower crane in its free state. Lifting height refers to the height of actual tower crane design.
Q:How to improve the stability of tower crane
Phosphating coating of steel wire rope, give priority to the use of manganese or zinc manganese phosphating, and smooth steel wire rope production process comparison, just add the last bonderizing process, steel wire, wear resistance and corrosion resistance is greatly improved, the use of the wire without direct phosphating cold twisted steel wire rope.
Q:What are the types of cranes?
Two, crane according to the structure is divided into bridge crane and jib crane two categories. (1) traffic, metallurgy specialcrane and Longmen crane, cable crane is a crane (2) portal crane, tower crane, truck crane, crawler cranes, truck cranes, cantilever crane is a crane arm.

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