• Tower Crane TC7021 Size 70M Max Working Range System 1
  • Tower Crane TC7021 Size 70M Max Working Range System 2
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Tower Crane TC7021 Size 70M Max Working Range

Tower Crane TC7021 Size 70M Max Working Range

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Loading Port:
Shanghai
Payment Terms:
TT OR LC
Min Order Qty:
1 unit
Supply Capability:
30 unit/month

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 Quick Details


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 are the climbing claws on the tower crane?
Climbing is lifting work cylinder claw pole on the standard main limb rod bearing points of the.
Q:What should I do with them? who would accept them if I donated them?
Maybe go to a children's hospital and see if they will accept it. If they won't maybe they will know of an organization that will.
Q:I am in dyer need of a camera jib wih very little budget and/or tools to build one. I am wondering if i can use a cymbal stand for a crash cymbal as a camera jib? My idea is to modufy it by attatching a small piece of wood to the top screw where you would put a cymbal the screw in an L piece (metal) to it or attach it ti the arm of the stand and just snigly fit it so as the arm is raised and lowered the L pice compensates and stays strait. i would attach the camcorder to the L piece with a 1/4 inch screw and washers. i also need the arm to move smoothly will this work with a crash stand. all advice i am grateful for thanks
While technically possible to do what you want, it is not recommended. I have seen too many cymbals and stands fall over during rehearsals or gigs... I think you want a much wider stance on the base. For the smaller cranes, use of a tripod works - but look at the pictures - the tripod legs are fully spread. In a couple of cases, using a heavy duty tripod - basically the same tripod used for PA speaker stands or light trees is done. In both cases, the wider stance of the fully spread legs will protect your camera investment. It is all about balance and center of gravity. A cymbal is about 2-3 pounds and the cymbal takes up a very small area, typically not much wide thatn the cymbal stand's leg spread - and we already know you can pretty easily knock over the cymbal stand... a small consumer camera is 2-3 pounds + the weight of the crane (which will depend on how long the crane is + the counterweights + any cables you might add... Cables? Sure. First, while not REALLY a requirement, since the camera is pretty far away from the person operating the crane, a LANC to start/stop recording and adjust focus and zoom is needed. As well, since the camcorder's viewfinder and LCD panel are that far away, in order to know if the shot is framed or in focus, you need a monitor. So cables... and that's potentially another couple of pounds. Technically, will it work? Yes. Would I trust my camera gear on it? Uh... likely not... but maybe you might - if the cymbal stand leg spread was made much larger and re-inforced with several 2x4s... and it was really solid... Be careful with the crane arm and counterweight total weight. Cymbal stands were not designed to hold a constant 15+ pounds of cymbals... let alone a constant 15+ pounds of anything else...
Q:Denny Crane (played by William Shattner), and Alan Shore (played by James Spader) are partners in a Boston law firm. I would like to know if those those two are father and son in the series,
SPOILER ALERT So far we have seen Donny Crane in Season 1's in Catch and Release we found that he isnt his son and than again in Season 1's Tourted Souls and Season 2's Squid Pro Quo
Q:These cranes always stay higher than the construction process but I have never seen how they are extended to stay above all of it. They come in two formats, free standing and those attached to the building. The possibilities that I thought of was that maybe they use another crane to lift the housing and the horisontal arm to put in more modules into the vertical part; or that they extend it by some way by putting modules in at the top or bottom and that the crane has some self-lifting mechanism to accommodate the insertion of more modules. However, I have never seen this being done, nor does the construction of these cranes point to its ability to do so. The only other possibility that I could think of was that the crane is set up at the outset to be higher than the completed height of the building, hence there is no need to extend it but this does not explain how they do it for very high buildings where the crane is attached to the building and seems to grow higher with the building.
In very tall buildings the tower crane's vertical frame usually sits in an elevator shaft. Initially it sits on its own base but as the building gets higher the crane is lifted using hydraulic jacks locked into the floor or floors above as they are completed. The construction of these cranes is rather ingenious in that they can dismantle themselves and the respective components lowered to the ground.
Q:I need to do a report on how cranes topple, moment (physics) and there correlation (relasionship).I am an idiot and have forgotten what moment is. so please explian that, how cranes topple and why they dont topple, and the correltion between the two!thank you
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:I just wonder they use cranes at such heights, how do they carry the cranes at such height? Helicopter or something? This is a picture of what I'm talking
The cranes are jack-up cranes. They have their own self-contained jacks. As one floor is completed, they jack up to the next level. The cranes are on top of the buildings. They are designed by structural and mechanical engineers to loift a given weight.
Q:How does a crane get down from a skyscraper once they're done using it? Like the crane on top of the skyscraper, do they get take it apart?
Can only be assumed that the jibs are first dismantled then the actual crane base lowered down by a second crane or even helicopter
Q:I want to make a sculpture out of 1,000 paper cranes. I have sometime to work on it, but not months. Has anyone ever known someone to do this, or done this themselves? How much time should I allow for such a project?
Do one and time it, then multiply by 1000. Subtract some time because you will get faster from experience.
Q:In the end of chapter 16 of Catching Fire the 2nd book of the Hunger Games it says the name she wrote in the dummy, was Seneca Crane. Who is that?!,
I didn't read catching fire but I do know that Seneca was the man with the awesome shaped beared who got locked into a room with a bowl of poisonous berries because he let peeta and katniss both win the hunger games

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