CMAX Luffing Tower Crane TCD 4021 Construction Machine

CMAX Luffing Tower Crane TCD 4021 Construction Machine

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 1 unit

Supply Capability:: 500 unit/month

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Product Description:

Descriptions of our tower crane:

1, the topless tower crane reduce the dismounting requirements, lower weight, low mounting height, dismount each mast at a time in the air, save the labor cost, safety and fast.

2, it is suitable for crossover work of the cranes, without the tower cap and pull rod, the safety will be increased when there need the crossover work.

3, It is suitable for the special requirement about the height, such as airport nearby, tunnel, workshop ,and the construction site with high-tension cable.

4, It is suitable for the construction site that has the requirement about the crane boom, it can be used as internal climbing crane in the high-rise buildings, irregular roof or small areas.

5, It is very convenient for dismounting in the restricted construction site, dismount each crane boom at a time by manual.

6, The steel structure of crane boom has long using life and high safety standard.

7, The crane boom is good applicability, high-usage,the design of the topless tower crane boom is easy for realizing the serialization and standardization. Reduce the design and making cost.

8, Low design cost, short cycle, can much better satisfy the multiple demands of the customers.

Advantage of our tower crane:

1, boom relief Angle is big, greatly widened the equipment capacity and scope of work.

2,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.The range-change structure drives the trolley moving on the horizontal crang jib, 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, boom stability is good, combination amplitude range.

4, suitable for height have special requirements occasions construction.

5, lifting capacity big, effectively solve the high steel structure construction team crane big lifting capacity requirements.

FAQ;

1. why chose us?

China National Building Materials (Group) Corporation (CNBM), established in 1984,now is one of the largest state-owned group corporation in China, dealing with building materials & industrial equipment. Up to year 2010, CNBM Group's total asset is 20 billion USD and total staff is more than 100,000.CNBM International Corporation, specializes in designing & manufacturing of various

kinds of construction machinery, including tower crane, building hoist, etc. All the equipment produced by CNBM are compliant with the National level quality standard, and wins great reputation for their endurable performance in worldwide markets.

2.How about the shipment?

You can put 2 sets of of wheel loaders in one 40HQ container. The spare parts are packed with boxes.

The delivery time is 20 days.

3. What about your service?

We have our factory, we can meet customers needs as soon as possible.

We have first rate professional technology and provide good after-sales service.

4.After Sales Service

We offer the Preventative Maintenance and After Sales Service. For we strongly feels about the importance of supporting our customers and the product solutions we provide. Consequently we offer comprehensive maintenance options to prevent equipment issues before they become problems. Also we offer one year guarantee period.

Q:Does a crane have a pulley?AND....Is an axe a wedge?THANX CUZ I DONT KNOW WHAT IM DOING, AND OMG IM SO GOING TO FAIL MY TEST BECAUSE IM SO DUMB.: Of course cranes have pulleys. If you know how they work it should be clear. Why else do you think there are two, or more (depending on the crane), ropes attached to their hook. Every rope added, except for the first, halves the weight of the object you want to lift. If you have two ropes and an object is 5 tones, the crane will only need the power to lift 2,5 tonnes. If it has six ropes it even only need the power to lift one tonne. And an axe is a wedge, logically. In fact, every tool with a blade is more or less a wedge. After all the wedge is the principal of a blade's function.

Q:Under what circumstances does a tower crane require third party testing?: New installation, demolition, close, major transformation, the use of site work committee, the use of factories to the Technical Supervision Bureau

Q:im so frustrated because ive tryed everything and im obsessed with this book it would really help if someone could find a way for me to read it for free online. i cant find it at my library.please and thank you:)?: Shelly Crane is not giving the book away for free so any online site that has it, has stolen intellectual property.

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:How did Romans make columns in roman times Without cranes?: They simply lay the stone down, chiseled out the column, then stood it up via an A frame, however the Romans did have cranes, (not the massive things of today) but mobile wooden ones with counter weights at the back that operated on a system of pulleys (they even had cranes that operated on water)

Q:What is the inspection certificate for tower cranes?: Inspection certificate of tower crane must have two certificates:1, the manufacturer issued its own "product quality certificate"2. The product quality supervision and inspection certificate issued by the Technical Supervision Bureau

Q:its either Japanese, chinese, or okinawan, but which is it?: Didn't you just ask this question a couple of days ago? When you do this, you set yourself up to be reported. When you say the stature, do you mean stance and posture? I'm taking that as a yes... Here is the answer - there is no single crane stance. All the postures and stances you practice in Crane arts are Crane stances and postures. I am a student of White Crane. There is a Crane style that originated in Tibet that is actually related to the White Ape. Then there is the White Crane school developed in the Yong Chun Village in Fukien Province, China. The Okinawans where taught concepts of White Crane, some of the forms and the most important part of White Crane which is Sam Chien training - aka Sanchin. This is the Internal training which develops Iron Body.

Q:type of dc motors used by electric train/subway,crane & fan.give a brief explanation to your answer?: I believe that electric trains and subways use series motors when DC motors are used because the series motor has a torque vs. speed curve that provides high torque at low speed and low torque at high speed. Since power is equal to torque times speed, that is essentially a constant power mode of operation. I believe that mode is selected because it results in a smaller and less expensive complement of power delivery equipment and more efficient operation. Although it has been many years since DC motors were used extensively for cranes, I believe that series motors were used more than other types for the same reasons stated above. However, compound or separately excited motors may have been used for better speed and torque control at low speeds. Except for heater fans in vehicles, I don't believe DC motors have ever been used much for fans. Today, permanent magnet DC motors are used for all of the little motors in vehicles including the radiator fan that was formerly belt driven by the engine. A permanent magnet motor is like a separately excited motor or a shunt motor. The optimum DC motor for a fan would probably be a shunt motor because a fan requires increasing torque as speed increases. Today, computers are cooled by brushless DC motors.

Q:So, this might seem like an odd question, but here goes.I work in an office and outside the windows there's a crane. Every day I come in from work, it has turn a little. The half-finished building that it stands next to is not being worked on and there's never anyone using the crane during the day. There's no other construction going on in the area is stands at.It's pretty high up like 6th to 7th floot and it's in a windy town. Does that matter?Why would someone turn around a crane during the night? Is it all a scheme to make me paronoid because they know I'm starring out the window most of the day?: Hi Peter no matter how good he brake on the turn table of the crane is it will be effected by the direction of the wind blowing at any time so it will have some influence on the direction the jib or the crane is in. it will turn just like a weather vane does. it is actually a safety feature.

Q:What measures should be taken to make tower cranes stable?: The fatigue test data show that the fatigue life of the phosphating coating of steel wire rope is about 3 times of the same structure light steel wire rope (laboratory comparable conditions), not easy to wear and corrosion is not easy to cause the service life of wire rope large amplitude extension. Manganese phosphating is wear resistant phosphating, which can solve the wear problem in the use of wire rope and improve the corrosion resistance. It is for reference only

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