Tower Crane TC7021 Size 70M Max Working Range

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Feature: Tower Crane                          Condition: New                                           Max.Lifting Load: 8T

Span: 70m                                             Place of Origin: China(Mainland) 

Brand Name: CMAX                              Model Number: TC7021         

 

Packaging & Delivery


Packaging Detail: Nude package          Delivery Detail: 25-30days

 

Specifications

  

● 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.

 

 

FAQ

 

Q: What is the difference between CNBM and CMAX?

A: CNBM stands for China National Building Materials (Group) Corporation, which is established in 1984, is the largest state-owned group corporation of building material & machinery with a total asset of 15 billion USD and a staff of 100000.

CMAX is the brand name of CNBM Group’s construction products, C stands for China and Max stands for Maximum.

 

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, CNBM 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 minimum radius of a tower crane?
Luffing jib crane luffing mechanism to control the lifting radius, which is lifting and landing boom.At the minimum radius, the boom is angled to the vertical.
Q:Tower crane driver simulation exam which website?
This also needs to imitate exam? When you go to the training, the teacher will read the outline.
Q:National standards for tower cranes
GB/T 5031-2008 GB 5144-2006 tower crane safety code for tower crane safety GB mechanical and electrical equipment thirty-second 5226.2-2002 mechanical parts: requirements for hoisting machines GB 5802-1986 lifting short chain hoists and other lifting equipment for the T (8) test specification level calibration chain GB 5905-1986 hoisting machine test code and procedures GB/T 5905-2011 crane and GB/T program 5972-1986 lifting wire rope for examination and discard utility specification GB/T 5972-2006 crane wire rope inspection and scrap utility specification GB/T 5972-2009 crane wire rope maintenance, maintenance, installation, inspection and disposal GB/T 5973-1986 wire rope with wedge joint GB/T 5973-2006 wire rope with wedge joint
Q:How to explain and classify the types of tower cranes? What do QTZ80 and Q5510 mean?
This is only the tower crane in different periods of different naming:QTZ---- is the general saying in 80s of last century, Q means steel material (usually Q235), T is tower crane (mostly tower top type), Z indicates heightening method is self lifting,PT------ is the naming method in recent years.
Q:What measures should be taken to make tower cranes stable?
Increase deadweight and weight.Crane wire rope is phosphate coated steel wire, galvanized steel wire, stainless steel wire rope or coated steel wire rope, the use of atmospheric environment, patented technology to produce manganese phosphating coating of steel wire rope has the longest lifespan, heavy corrosion environment optimization of hot galvanized wire rope - double coating phosphating, phosphating coating to improve the wear resistance and corrosion resistance of steel wire that is not easy to wear and corrosion resistance is to improve the working life of the plain steel wire rope will be completely eliminated.
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:Minimum QTZ63 tower crane special electric box open for many A
QTZ63 tower crane with air and leakage protection:Minimum three-phase air switch not less than 100A; at the same time leakage protector is not less than 100A three-phase four wire system leakage protection.Maximum three-phase air switch not greater than 150A; at the same time, leakage protector is not more than 150A of three-phase four wire system leakage protection.
Q:What is the free height of a tower crane?
General small 40 tower, its free height is about 30 meters. The 63-80 tower is usually about 45 meters. The 125 tower is about 47-50 meters.
Q:How much height should tower crane work at M?
Try to ensure that the tower crane in the wind is too large to be free of rotation. The safe distance between the rear arm of tower crane and adjacent buildings shall be no less than 50cm. The safe distance between tower crane and power line meets the requirement.
Q:Tower crane four limit, two insurance, two insurance what is that?
Four limit: torque, ultra high, variable amplitude, walking limit device. Two insurance: hook insurance and reel safety device.

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