Tower Crane TC7021 Construction Machiney

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China main port
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1 set
Supply Capability:
15 set/month

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Product Description:

Introduction:

Tower crane is used to lift, lower and horizontally move materials in construction and other industry. It has large lifting capacity and lifting height, wide moving range, and can rotate. It basically consists of base foundation, mast, slewing unit, working jib, counter jib, counterweight, hook, and operating cabin.


Features:

1. 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.
2. The range-change structure drives the dolly to change range on the horizontal arm, 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.
3. The crane has complete set of safety devices, which can guarantee the safe and high efficienct operation of the equipment. The machine is equipped with lifting height limiter, dolly range-change limiter, moment limiter, weight limiter, circumgyrating limiter, etc.
4. The operator's room is set independently on one side, with good vision field. It creates a good working environment for the operator.
5. Provide stepless speed regulation. Outstanding in working efficiency, operating stability and reliability,
6. This Tower Crane equipped with hydraulic lifting and connecting. This Tower Crane' s height can accordign to the actual height of the building and at the same time unchange the lifting capacity.
7. LVF: Frequency control, variable speed, smoothness and high stability, non-striking.
8. SM: Three-speed change pole motor, simple in structure, economical ,fitting.



Specifications:


Tower Crane TC7021 Construction Machiney

Tower Crane TC7021 Construction Machiney

Tower Crane TC7021 Construction Machiney

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Q:Cranes can be operated by all of the following except:?
Crane are extremely dangerous and complicated machinery , the operators need intensive education and training , they have to pass the required tests to be certified . Now even the signal guy on the ground who helps the crane operator needs to be certified . So your answer is A.
Q:Why didn't Machida use the crane kick on Jones?
machida was getting pressured way too much the front head kick has to be set up to work you cant just throw it up
Q:Paper cranes...?
no and no proof
Q:What is the power of a tower crane? Five
TC7525-16D switchboard power 80KWTC5610-4 switchboard power 34KW.TC6015A-10E switchboard power 71.5KWThe other two types have not been touched and will not be answered. I'm sorry
Q:In what circumstances should a tower crane be demonstrated by an expert?
Three, lifting and installation, demolition works(1) use of unconventional lifting equipment, methods, and lifting weights of a single piece in excess of 100kN and aboveHeavy lift works.
Q:how do they erect those huge cranes for constuction?
How Do They Grow? Tower cranes arrive at the construction site on 10 to 12 tractor-trailer rigs. The crew uses a mobile crane to assemble the jib and the machinery section, and places these horizontal members on a 40-foot (12-m) mast that consists of two mast sections. The mobile crane then adds the counterweights. The mast rises from this firm foundation. The mast is a large, triangulated lattice structure, typically 10 feet (3.2 meters) square. The triangulated structure gives the mast the strength to remain upright. To rise to its maximum height, the crane grows itself one mast section at a time! The crew uses a top climber or climbing frame that fits between the slewing unit and the top of the mast. Here's the process: The crew hangs a weight on the jib to balance the counterweight. The crew detaches the slewing unit from the top of the mast. Large hydraulic rams in the top climber push the slewing unit up 20 feet (6 m). The crane operator uses the crane to lift another 20-foot mast section into the gap opened by the climbing frame. Once bolted in place, the crane is 20 feet taller! Once the building is finished and it is time for the crane to come down, the process is reversed -- the crane disassembles its own mast and then smaller cranes disassemble the rest.
Q:in the Open Boat by Stephen Crane, in part IV why are the characters not identified?
The characters are defined by their roles on the boat. Their previous experiences or personalities don't matter here. It is just the narrow repetitive experience of rowing and how they each contribute to it. Each character is Everyman, being thrown around by the merciless, indifferent hand of Fate. I think that Crane was squarely in the company of Naturalists (they think there's no such thing as individual agency, like Darwinism in fiction). The interesting thing to think about here is that one character has a name - Billie, the oiler. Why is this? He's the strongest, he's the most experienced and he's the one that dies. He's an individual to the reader but Fate doesn't care. I'm sure you can flesh the ideas out now.
Q:How do they get big cranes on top of high rise buildings?
If they have more than 13 floors, in fact there is a 13th floor. People are just too superstitious for some buildings, like hotels to state them. It will skip from 12-14.
Q:what is the overhead bridge crane?
A bridge crane is one that looks like a bridge (sorry I am tired). It sits on two railway tracks. One at either side of say a building. The tracks are at a fair height. The crane bridge spans between the tracks. Long travel is when the crane moves along the tracks. Cross travel is when the 'crab' moves sideways along the bridge. The crab has the hoist on it with a drum and cable type arrangenment. The lifting gear or hook is attached to the cable. They are very useful in factories for transporting large parts from one process to another. They transport pretty well anywhere in a well designed building in that Long Travel can be X cross travel can be Y and hoist up and down can be Z.
Q:a horizontal joist carrying a travelling crane is simply supported over a span of 4m the mass of the crane is 150 kg?
figure shear first Let F be the max. crane load. for a simply supported symmetric load, the reactions at each end support will be half the total load. The reaction loads will also equal the shear load. 3000 N = (F + 150(9.8))/2 F = 4530 N The maximum bending moment will be the shear force times the moment arm of half the joist length 5000 Nm = [(F + 150(9.8))/2] N (2.0 m) 5000 = F + 150(9.8) F = 3530 N The bending moment max load is 1000 N less than the Shear max load so bending is the limiting factor The maximum load allowed is F = 3530 N 3530 / 9.8 = 360 kg As a form of exchange, please remember to vote a Best Answer from your results.

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