Topkit Tower Crane TC7021(QTZ250) with High Quality

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Detail of Tower Crane

Feature: Tower Crane                Condition: New                         Application:Building,Construction,Industrial

Rated Loading Capacity: 2.1-12T     Rated Lifting Moment:250KN.M           Max. Lifting Load: 12T

Max. Lifting Height: 200M           Span: 2.5-70M                          Place of Origin: China (Mainland)

Brand Name: CMAX                    Model Number: TC7021(QTZ250)           Certification: ISO,CE

Warranty: 1 Year                    Free standing height (M): 50           Max. Working Range(M): 70

Tip Lifting Weight(T): 2.1          Working Range(M): 40,45,50,55,60,65,70 Climbing speed(M/MIN): 0.5

Counterweight(T): 23.6              Working Temperature(°C): -40-+60      Type: Topkit Tower Crane

Delivery Date:25-30 days            Mast Section Size(L*W*H)MM:2000*2000*3000             


Main Features of Tower Crane


1. TC7021(QTZ250) have competitive price and excellent quality, suitable for all kinds of construction project and can work under all kinds of work condition. With their working radius from 2.5 to 70m, TC7021(QTZ250) tower cranes are famous for their large operating ranges, varied working methods and wide uses.  

 

2. This series of tower cranes has a horizontal jib frame, a jib-trolley radius-changing mechanism and a hydraulic self-raising mechanism.

 

3. It is original in design, reliable in operation and satisfactory in shape.

 

4. Equipped with all necessary safety devices, these cranes show a good speed-control capacity, satisfactory operating stability and high work efficiency.

 

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

 

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


7. With scientific layout and beautiful appearance.

 

8.They are widely applied for the construction of high-rise hotels, resident buildings, high-rise industrial buildings, large-span factory buildings and tower like buildings like tall chimneys. 

 

9.After sales service will be offered which will get rid of all your worries in the purchase of our product



Specification of Tower Crane

 

Topkit Tower Crane TC7021(QTZ250) with High Quality

Topkit Tower Crane TC7021(QTZ250) with High Quality



Topkit Tower Crane TC7021(QTZ250) with High Quality 

Images of Tower Crane

Topkit Tower Crane TC7021(QTZ250) with High Quality

Topkit Tower Crane TC7021(QTZ250) with High Quality

Topkit Tower Crane TC7021(QTZ250) with High Quality

Topkit Tower Crane TC7021(QTZ250) with High Quality

Topkit Tower Crane TC7021(QTZ250) with High Quality


FAQ about Tower Crane

 

Q: What kinds of tower crane are available now? 

A: Four main categories: normal  tower crane  with cat head, internal climbing  tower crane , top less  tower crane  and luffing  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.

 

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:kelsey grammer as dr. frasier crane or richard belzer as det. munch from 'homicide' and 'law and order: svu' ?
It's definately Frasier Crane. His character was introduced on Cheers way before the SVU franchise began.
Q:What special operators should be equipped for the installation and disassembly of tower cranes?
2, with construction qualification certificates for special operations of the construction hoisting machinery installation and disassembly, lifting work, special operation signal heavy drivers, riggers and other operations personnel. And an electrician.
Q:calculating psf in regaurdto crawler cranes?
Not sure what you are asking exactly... Are you saying that you have a crane with a capacity of 100 tons and you want to know the pressure on the soil where the crane is positioned? In this case, you take the capacity (in pounds) plus the weight of the crane (in pounds) then divide their sum by the area of the tracks on the crane (in square feet). This will result in pounds per square foot or psf as you wrote above. These are example estimates, they may not be anywhere near the correct answer, this is simply how to do the calculation. Assumed Capacity 100 ton = 200,000 lbs. Assumed Weight 105 ton = 210,000 lbs. Assumed Area of Track = 200 square feet Note: 1 U.S. ton = 2,000 pounds = 2,000 lbs. 410,000 lbs / 200 square feet = 2,050 psf There's a start, now you just need to find out how much it actually weighs and how long and wide the tracks are to get the area of the track on the ground. I hope that answers the question you were asking.
Q:what is the correlation between moment and toppling cranes?
First of all, let's think of a crane like a giant see-saw, where the plank itself doesn't have any weight. Now cranes have big weights on one side of the pivot, which they can move along (I think, I may be wrong). These cause what is called a 'turning moment'. The further out from the 'pivot' they are, the greater the moment. The other consideration with a crane is it's load. Generally, this is carried a lot further out from the pivot point, on the opposite side from the weights. Now consider this. If you have a small child sitting on the end of a see-saw, you will be able to balance them with a larger person sat closer to the pivot. This is the principle on which cranes work. The moment is the force times the distance from the pivot, and it must be balanced turning each way for the see-saw/crane not to topple. This is somewhat of a simplification, but hope it helps.
Q:When the tower crane top height is more than meters
Circular of the Ministry of housing, urban and rural construction on Issuing the measures for the safety administration of sub hazardous and sub divisional projectsAnnex No. [2009]87 [Annex two]"More than a certain size of the risk of larger sub sub project scope."
Q:a crane lifts load of 500kg mass to a distance f 20m in 10s at a constant velocity. how much work is done?
work done(W) is given by the change in the potential energy(P.E). here, initial P.E = 0. final P.E = mgh = (500)(10)(20) = 100000 J =100 KJ (kilo joules) therefore work done = 100 KJ. here distance means vertical height.But if the crane takes the load parallel to the ground ,then work done will be zero.Time is given here to calculate the power of the crane given by work/time = 10 KW(kilo watts).
Q:What are the necessary safety devices on a tower crane?
(6) lightning protection and anti electromagnetic wave induction device;For the crane whose hinge height is over 50m, the lightning arrester shall be installed according to the actual situation and the electromagnetic interference shall be taken.(7) tower crane shall install limit torque coupling in order to prevent slewing overload(8) anti stripping device prevents the rope from working position(9) the device prevents the rope from breaking and the trolley is free to slide(10) the car prevents the broken axle device, prevents the trolley wheel to fall off the axle, then falls(11) each part of the brake is a working device and a safety device
Q:Origami Crane Myth.......?
this is like asking: in case you're making a wish on a capturing megastar, will it come genuine? besides the actuality that the two are effective gestures, no it won't come genuine. Origami cranes are purely products of paper that are folded to resemble birds; no count number what proportion you're making, they gained't handle supernatural understand-how including wish-granting.
Q:What are some ideas to build a crane out of Popsicle sticks?
My son and I used to do a couple of things with them. We would make masks. Get some of the cheap paper plates, glue the sticks to them - cut out and decorate. You can make animals, people, it is a lot of fun. The log cabin is a great idea, but a little hard for that age. So we made our log cabins on construction paper, Glue the stick on there in the shape of a house. Good times!
Q:Will these crane eggs hatch?
What species of crane? Sandhill cranes have an incubation time of around 30 days, do you know the exact day of egg laying? Are you sure they haven't hatched and they are sitting on chicks? If you are getting close enough to the nest to see eggs or chicks, you might be too close and could be interfering with their natural behavior, unless they are captive or you are using a blind. You mentioned their chick being hit by a car, so if they are nesting that close to people, they may be nervous and are flushed from the nest too often to keep the eggs the right temperature. It's hard to say without more information. Edit: Extra cold weather can damage the eggs. It does seem like they've lost this clutch-50 days is long past when they should have hatched. They may be trying to incubate them anyway, I haven't worked directly with sandhills, but other birds that I've conducted nest monitoring studies on have sometimes sat on nests a while past when the eggs should have hatched. Hopefully this is actually their fourth clutch and you missed the removal of the third clutch. Good luck!

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