QTZ40(4807/4708) Tower Crane for Construction

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Qingdao
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TT OR LC
Min Order Qty:
1 set
Supply Capability:
50 set/month

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Item specifice:

Maximum Lifting Weight: 4T Maximum Lifting Height(M): 30m Rated Loading Capacity: 0.7/0.79t
Span: 48/46.8m Rated Load Moment: 400n

Product Description:

Characteristics of Tower Crane

1)This tower crane is one of the key product of CNBM company, which have competitive price and excellent quality, suitable for all kinds of construction project and can work under all kinds of work condition.

2) This kind of crane adopts standard section hydraulic lifting and connecting, and can decide the crane height according to the actual height of the building, and at the same time the lifting capacity will not be affected; The max. attached height can reach 180m.

3) 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 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.

4) The crane has complete set 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.

5)The machine has scientific layout and beautiful appearance. The operator's room is set independently on one side, with good vision field. It creates a good working environment for the operator.

QTZ40(4807/4708) Tower Crane for Construction

QTZ40(4807/4708) Tower Crane for Construction

Main Technical Parameter

QTZ40(4807/4708) Tower Crane
Ultra-long suspension arm (48/46.8m), large coverage.
Large section (1500*1500) of standard section, good rigidity, stable complete machine during hoisting, little sway.
Main limb material of standard section: Large size (<140*140* 12, 160*160*12)
Electrical system using high-quality domestic or imported components, stable and reliable performance.
Standard section, draw bar and upper and lower turntables adopting C02 gas shielded welding, large weld penetration, little deformation.
Two-speed motor or winding motor, stable and reliable starting, no shock.
Hoisting mechanism with good speed regulation and stability and no lifting shock
Load diagram
4807 loading capacity
m
1215222530353840424548
4t-11.38mt3.7782.9571.9121.6431.3151.0810.970.9050.8460.7680.7
2t-21.17mt221.9121.6431.3151.0810.970.9050.8460.7680.7
4708 loading capacity
m
1115212530353840424546.8
4t-10.96mt3.9862.871.9961.6461.341.1211.0170.9570.9020.8290.79
2t-20.96mt221.9961.6461.341.1211.0170.9570.9020.8290.79
Mechanism







QTZ40 self-climbing tower crane performance parameters








48074708







rated lifting momentKN.m400400







maximum load-lifting capacityt44







load-lifting capacity of maximum ranget0.70.79







working rangem3-483-46.8







heightmfreestanding:30   
attaching:120
freestanding:30
attaching:120








hoisting speeda=2m/min51.6/26/7.9851.6/25.8/7.9







a=425.8/12.9/3.925.8/12.9/3.9







luffing speedm/min38.6/25.239.6/25.2







swing speedr/min0.620.62







maximum lifting speedm/min0.40.4







total power of motorsKW23.923.9







maximum wind pressure in the working stateN/M2250







 

Packaging Details:40 HC containers; 
Wodden cage for electrical parts 
Steel box for small parts
Delivery Detail:20-25 days after received the advanced money

QTZ40(4807/4708) Tower Crane for Construction

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.

Key reason for CNBM's achievements:

Research and Development (R&D)

- Our own systems of production engineering.

- Production design from the concept to the engineering details.

- National level research academy for various building equipment for over 30 years.

- Continuous development of new solutions and products adapted to the requirements of our clients.

- Technical experts with abundant experience in relative fields.

Production

- Complete quality control system.

- Nearly 20 years experiences in manufacturing fields.

- Full production capacity up to 1000 tower cranes annually (with various load from 4tons to 40tons ).

Commercial & marketing

- Customer-oriented philosophy.

- Full international business experiences.

- Global network & localization strategy.

- Professional & high efficiency team.

Service

Under the guidance of "globalization + localization" strategy, in most of our main markets, the marketing

operations & after sales services are carried out by CNBM's local partner companies.

To provide enough & timely support to the local partners, CNBM has set up 6 branches in the world (with more to c,

ensuring the best services to the end-users along with high quality equipment.

Our Service Branch

CNBM INTERNATIONAL CORPORATION U.A.E BRANCH

CNBM INTERNATIONAL CORPORATION K.S.A BRANCH

CNBM INTERNATIONAL CORPORATION IRAN BRANCH

CNBM (U.S.A) CORPORATION

CNBM INTERNATIONAL(RUSSIA)CORPORATION

CNBM INDIA CORPORATION

CNBM NIGERIA CORPORATION

CNBM KAZAKHSTAN BRANCH

CNBM VIETNAM COMPANY LIMITED

UNDER CONSTRUCTION OTHER PLACES

Service

----Providing timely delivery, standby engineers are ready to slove any of your problem

----Providing all-embraced warranty of products quality, worksite installation guidance

----Providing ample spare parts and training of operation and maintenance

----Engineers have more than 20 years' experience in tower crane, ready to solve any of your  problems.

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Q:What special operators should be equipped for the installation and disassembly of tower cranes?
According to the requirements of the 2.0.3 specification: tower crane tower crane installation and disassembly operation should be equipped with the following: 1, hold a qualified safety assessment certificate of the project and responsible for the safety of people and machinery management personnel; 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:What are the requirements for jack up and plus section of jack up tower crane?
When lifting, a standard section is hoisted on the imported beam or introduced platform. Then open the pins or bolts connecting the standard section with the slewing support. Start the oil pump, so that the cage in the standard section of the outward sliding, until the release of a standard section position, and then imported beam or imported platform on the standard section into the connection. This completes a process.
Q:What tower cranes are used on the 30 storey house?
The 30 storey building on the height of about 100 meters to 120 meters, plus 2 to 3 layers of basement, the tower crane must set the height of 110 meters to 140 meters, if the single building is less than 60 thousand square meters of building square meters, as the total number of square meters, using a two QTZ63 type tower crane is enough,
Q:Emergency treatment of interrupted electricity during lifting of tower crane
It is very dangerous to stop the electricity during the lifting of tower crane. Because the slewing brake is missing, the tower crane is very dangerous because the wind rotates.
Q:How many meters of cranes should be in accordance with the anemometer?
The state specifies the installation of wind speed meters for outdoor cranes!AskMore than how many meters need to be installed, or as long as it's outdoor, it needs installationChasing the answerThe provisions of the People's Republic of China national standard GB 6067.1--2010:9.6.1.1 high speed cranes for outdoor work shall be equipped with an anemometer. The anemometer shall be installed on the windward side of the crane.9.6.1.2 high speed cranes for outdoor work should be equipped with an air speed alarm that displays instantaneous wind speed, and when the wind speed is greater than the working wind speed setting value, the alarm signal should be sent out.
Q:The role of slewing limiter in tower cranes is limited
The crane or winch motor winding rope arranged on the roller loose, hoisting large demolition, resulting in the large load fast rope rope cut into bundles, causing fast rope severe jitter, vulnerable to instability, the results often appear to work and stop dangerous, can not stop the embarrassing situation.
Q:Climbing process of an internal climbing tower crane
The tower is sleeved on the ladder climbing, lifting hydraulic cylinder is articulated in the body of the beam, and the lower end (piston rod end) the middle beam is hinged on the activities. The two sides of the tower are provided with legs, and the two sides of the movable beam are also provided with legs, and the two supporting legs are alternately supported on the ladder steps so as to cause the tower to rise.
Q:What kind of tower cranes are available? How about the scope of all kinds of tower cranes?
Tower crane is divided into fixed tower crane, mobile tower crane, jack up tower craneThe mobile tower crane is divided into track type, tire type and automobile typeThe jack up tower crane is divided into two parts: internal climbing type and attached typeUsage: loading and unloading concrete by hanging tank for general construction and installation
Q:How many meters does the tower crane installation height require expert proof?
The mounting height of the tower crane is determined by the manufacturer's manual,It has nothing to do with experts,After the tower crane is installed, it needs to go through the provincial construction quality and safety supervision station, and the designated testing institution will meet the technical requirements of the production plant, and the method can be used only after the use of the permit.
Q:About tower crane torque limiter with 4 limit switches, each play a role, thank you
Hook top point control: when the hook to the high limit, limit action, do not continue to hook!Overload control: when the weight exceeds the overload point or amplitude exceeds the maximum amplitude or the loading rate is more than 105% when the output control, prohibit the hook lifting action and prohibit car distance to allow the car to increase the amplitude, amplitude can be damped near.

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