Tower Crane TC7021 70M Max Working Range

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$40,000.00 - 200,000.00 / unit
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China main port
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TT or LC
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1 unit
Supply Capability:
30 unit/month

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Product Description:

 

 Quick Details of TC7021 Tower Crane


Feature: Tower Crane                          

Condition: New                                           

Max.Lifting Load: 8T

Span: 70m                                             

Place of Origin: China(Mainland)              

Model Number: TC7021         

 

Packaging & Delivery of TC7021 Tower Crane


Packaging Detail: Nude package          

Delivery Detail: 25-30days

 

Specifications of TC7021 Tower Crane

  

● Max. working range 70m, tip lifting weight 2.1T and Max. lifting weight 12T.


● Slewing mechanism and trolleying mechanism all take VFD+PLC technical control.


● Outstanding in working efficiency, operating speed and stability. Reduce future maintenance cost.

 

 

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

 

Images of TC7021 Tower Crane

 

 

FAQ of TC7021 Tower Crane

 

Q: What is the principal to quote the right tower crane to the client?

A: First, we need to know clients’ requirements. Normally the following information should be clarified by the client: max lifting capacity, height (height under hook), tip load and jib length.

Second, we need to know what the foundation requirement from the client is. (Fixed/undercarriage/ undercarriage with traveling system), mast section type (panel/integrated), power supply source (voltage, ampere and frequency), the distance between the machine and power supply……

Third if there are special needs, we could suggest proposal according to clear data provided by the clients. End-user, as construction machinery buyer, knows the site situation well and should make decision, such as the machinery specification, type…….

 

Q: What about our tower crane's 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 is the difference between a tower crane and a jack up tower crane?
The fixed tower crane means lifting the foundation of the tower body on the foundation or structure through the connecting piece.
Q:National standards for tower cranes
Tower crane GB/T5031 - 2008 has been implemented since February 1, 2009. In accordance with the new standards promulgated, chief editor -- China Academy of Building Research Institute of building mechanization of Langfang, Beijing and Hebei respectively in Hangzhou, Nanning held the new standards xuanguan. Luo Wenlong, director of the standard editor and vice president of Li Shoulin, explained the new standards comprehensively. The new standards are quite different from the previous standards, adding a lot of security related content, mainly embodied in the following 3 aspects: 1) the principle of different. Previously considered issues mainly consider the domestic tower crane industry technology status, appropriately reflect the advanced nature, and now is the requirements and international benchmarking, consider safety. 2) different forms of organization. The standard used in scientific research institutes, universities, factory assistant; the preparation unit including Research Institute, and the host plant, supporting enterprises, universities, inspection unit, there are relatively large units on behalf of (rental business), etc..
Q:About tower crane torque limiter with 4 limit switches, each play a role, thank you
Lifting weight limiter: limit maximum lifting weight;Torque limiter: limit the maximum lifting torque;Height limiter: limits the maximum and minimum position of the hook lifting and lowering;Amplitude limiter: limit the lifting trolley in the boom on the outside, the inside position;Slewing limiter: limit of up to the number of rotating ring arm;
Q:What are the parts of a tower crane? What are their main functions?
The tower crane is mainly composed of a tower body, door frame, tower, tower cap, boom, arm and other metal structure and balance hoisting, luffing, slewing mechanism operation, composition and electrical system and safety device etc.!
Q:What does tower crane 400tm mean?
Lifting torque of 400 tons. Meters, also known as 4000KN/m, refers to the QTZ400 tower crane, the general maximum lifting capacity of 25 tons, big arm 70 meters, the most front-end hanging 5.2 tons, independent height of about 70 meters. Normally we say QTZ40 tower crane is lifting torque of 40 tons. Meters, 400KN/m.
Q:Tower crane 5610 why call QTZ63 tower crane, 5613 call QTZ806015, call QTZ100
As for the calculation method, the weight of a simple arm length * arm tip can not be used, because the nominal lifting torque of the tower crane is not calculated at the maximum amplitude.However, the maximum weight can be calculated by the maximum amplitude of the maximum weight, such as 5613 tower cranes, the maximum lifting capacity of 6 tons, while the maximum variable distance of 6 tons reached 15m, 60KN * 15m=800KN.m.The above is only my personal understanding of the tower crane, but I am not a professional construction machinery, the above calculations do not know whether it is reasonable, I hope to help you.
Q:What role does the tower crane torque limiter play?
The overload protection of tower crane is protected by two equipment, lifting load limiter and torque limiter. The latter generally in the big arm root 4-5 meters to the front of the large arm, overloading (Chao Liju) work, it is more important, basically, the scope of work is torque limiter plays a protective role. While the former is the weight limiter function in the arm root within 4-5 meters, because the tower crane is a jib type crane, each allowing weight lifting position corresponding to the different (CAB load curve). For example, such as 63KN.M, the big arm root 2 meters lifting, the theory is 23 tons, while the torque limiter is not over, but in fact, the tower crane at early crouched down, so the weight limiter in this work.
Q:Tower crane technical condition GB/T 9462-1999 has been cancelled? If so, what is the new standard?
Standard number: GB/T 5031-2008Standard Name: Tower CraneStandard status: currentAlternatives: instead of GB/T 17806-1999; GB/T 17807-1999; GB/T 5031-1994; GB/T 9462-1999This standard specifies the nomenclature, classification and identification, technical requirements, test methods, inspection rules, information identification, packaging, transportation and storage, installation and climbing, and inspection of tower cranes.
Q:QTZ63 (Q5610) tower crane power, how many power parts, name, model specification, product number, date of appearance
All the details of the equipment are availableAs for power, it depends on the specific configuration of the frequency conversion and non frequency conversion will not be the same
Q:Tower crane; command; gesture
5. hook down: arm stretched to the front, lower, and the body with an angle of about 30 degrees, five fingers stretched out naturally, with the wrist as the axis rotation.6. hook horizontal movement: small arm side to side straight, fingers together, palms outward, toward the direction of the load should be moving down to the shoulder level position.7. the hook rises slightly: the small arm extends to the top of the side, the top of the palm is higher than the shoulder, the wrist is the axis, and the palms swing upward repeatedly.

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