TOWER CRANE TC4708

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Tianjin
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TT OR LC
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1 set
Supply Capability:
12 set/month

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Technology is the drive for business development and production equipment the assurance of product quality. In the large-scale concentrated production, the stability and uniformity of product quality plays an essential role. The company constantly improves processing equipment. The automatic assembly line ensured quality stability and maximally reduced adverse effect of personal factor to the product quality. As a result, the one-time qualification rate of the products is improved and the company is able to win continuous trust from customers。

1.    The lifting boom and balance boom adopt cantilever boom structure, which reduces the hoisting modular and makes it more safe, convenient and flexible to install and uninstall, and reduces the requirements for hoisting equipment and the site.
2. Multiple special mounting brackets are available, which saves the installation time and ensures safe and quality installation.
3. The lifting boom adopts cantilever boom structure and variable cross-section materials, featuring more reasonable structural stress and long service life; and it is easier to make different combination of boom length. 
4. It adopts standard sections (for models of over 12t) of piece assembly structure, split structure stock, and assembled platform, which meet the transport requirements for standard container.
5. The extra-long boom is designed with a rope-supporting trolley, and the speed of which is 1/2 of that of the luffing trolley, which can achieve the most optimum rope-supporting effect. The structure has applied for national patent.
6. The lifting mechanism adopts speed regulation by frequency control or by eddy current brake series resistance, featuring good lifting performance; The slewing system adopts frequency control by torque electric motor or by coil winding type electric motor with hydraulic coupler, featuring smooth operation and small slewing impact.
7. All kinds of safety devices are reliable and easy to adjust; both the safety monitoring control system and traditional safety system are available, the double system ensures safety operation of the tower crane; the hydraulic system adopts low/medium pressure design, featuring higher safety and reliability.

The construction hoist product  produced has achieved internationally advanced level in terms of industrial design, control and the drive performance, as well as the operation safety and comfortableness. And is also making efforts to keep improving the product, as what the construction hoist lifts is not only people and material, but also a kind of social responsibility and service concept…
The new generation SC series of construction hoists adopt modular structure, ergonomic design and advanced manufacturing technology, thus the adaptability and reliability of the product is greatly improved, e.g. the max. lifting height can reach 300 meters. The product adopts multiple patented technologies, reaches advanced level in China, and the market share in domestic market is increasing year by year. The product has also been exported to overseas countries like Russia, Turkmenstan, Vietnam, etc. winning the confidence of customers of both home and abroad

1. The cage drive system is equipped with buffering device, so the cage moves more stable.
2. The ergonomically designed cage interior improves comfortableness.
3. The unique structural design has applied for patent.
4. The typical technologies ensure the malposition difference of the guide rail.
5. The excellent parts in the industry ensures reliable quality of the machine.
6. Precise assembly and accurate drive.
7. Professional solutions for special projects.
8. The complete safety devices ensures reliable control system.
 

 

 

Tower Cranes(Top-Slewing)    

Model

Max.lifting capacity & work range

Max.work range & lifting capacity

Max.independent lifting height(m)

Torque

Lifting capacity at max.boom length

Lifting capacity(t)

Work range(m)

Work range(m)

Lifting capacity(t)

QTZ31.5

TC3508

3

11.59

35

0.8

29

TC3807

3

11.15

38

0.7

29

QTZ40

TC4208

4

11.6

42

0.8

29

TC4708

4

13.4

47

0.8

29

QTZ50

TC4610

5

11.9

46

1

36

TC5010

5

13.1

50

1

36

QTZ63

TC5013

6

13.72

50

1.3

40

TC5013A

6

13.72

50

1.3

40

TC5510

6

13.17

55

1

40

TC5510A

6

13.17

55

1

40

QTZ80

TC5512

8

12.68

55

1.2

45

QTZ100

TC6013

8

14.45

60

1.3

45

QTZ125

TC6014A

10

12.4

60

1.4

50

QTZ160

TC6020

10

15.2

60

2

52.6

QTZ250

TC7030

12

20.4

70

3

45

 

 

 

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Q:What are the types of tower cranes?
The tower crane is divided into: fixed tower crane mobile tower crane self lifting tower crane mobile tower crane is divided into: rail type tire type automobile type self lifting tower crane is divided into: attachment type climbing uses: concrete with cage for loading and unloading installation general building mixed
Q:How often should the crane be inspected regularly?
Lifting machines are inspected regularly every two years, and explosion-proof lifting machines shall be inspected regularly every year. Must have the corresponding inspection qualification inspection.
Q:How to calculate the pouring and maintenance of tower crane concrete in valuation?
Calculated according to actual concrete quantity. According to the design plan of the visa and construction organization.
Q:Tower crane installation, wind speed is greater than 12m/s, wind should stop operation,
This is not on the project department climbed to tower crane to measure wind speed, regardless of height, is listening to the local meteorological station forecast, more than five winds, should stop working.
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
Q:Equipment safety of tower crane
Safe distance tower and transmission line is not up to the requirements of the tower frame door frame to design, erection principle to power erection, do not use metal materials, bamboo and other materials can be used. The distance between a bamboo pole and a power line shall not be less than 1m, and a certain degree of stability shall be taken to prevent the wind from blowing. The tower crane height and bottom bearing size ratio is large, and the center of gravity of the tower body, high torque, braking frequency, impact force, in order to increase its stability, we will analysis the main causes of the tilting of the tower crane has the following:Overloading. Different types of cranes usually adopts the lifting torque based control, when the amplitude exceeds the rated load weight increase or the corresponding weights, the overturning moment more than stable moment of it, it may cause the collapse of the tower crane.Two, inclined hanging. Slant weights will increase its overturning moment, the lifting point will produce horizontal force and vertical force on the crane, bottom supporting point will produce an additional overturning moment, and the stability coefficient is reduced, resulting in tower crane collapse.Three, the tower crane foundation is uneven, the ground endurance is insufficient, the perpendicularity error is too big, also can cause the tower crane to overturn the moment to increase, causes the tower crane stability to reduce. Therefore, we should proceed from these key factors to strictly check, check and check, and prevent major equipment personal safety accidents. State explicitly eliminated the model should resolutely prohibit the use of, in disrepair, tower crane in the identification of the repair, to limit the use of load, tower crane for the use of fixed number of years there is no uniform standards, opinions vary, different places have different provisions.
Q:What is a TQ80 tower crane?
To put it simply, QTZ is updated than the TQ model, and the TQ series first appeared in 70s, and the QTZ series came out in the 80,90. Various parameters must be more advanced than TQ.
Q:Is tower crane a tower crane?
Yes, the tower crane is commonly known as the "standard" in the industry. It is called tower crane.
Q:What are the characteristics of a tower crane?
Classification and characteristics of tower cranesAccording to whether or not there is a walking mechanism, it can be divided into movable tower crane and fixed crane.Mobile tower cranes can be divided into four types: track type, tyre type, automobile type and caterpillar type according to the difference of walking device.The track type tower crane tower body is fixed on the walking underframe, and can be operated on the specially designed track. The utility model has good stability, can walk with load, and has high work efficiency, so the utility model is widely used in construction and installation engineering.The wheel type, the automobile type and the crawler type tower crane have no track device, and they are easy to move, but can not walk with load and have poor stability.The fixed tower crane can be divided into two types: the attached self lifting type and the internal climbing type according to the different installed positions:The attached tower crane can rise as the building rises. It can be applied to the high-rise building. The structure of the crane can only bear the horizontal load from the crane, but it is easy to use, but it occupies more steel structure;The internal climbing crane in the interior of the building (elevator, staircase), up through a set of system and improve the lifting bracket, is complicated, but occupy steel less, do not need to be installed, all the weight and load by building bear.
Q:How to build a tower crane?
7, the boom of the horizontal installation, setup of counterweight, main hoist installation, installation sequence of these large, there are provisions in the instructions.8 、 install operating room, main cable and control cable. Installation of crane wire rope, hook, lifting the car has been in the assembly of the boom when installed.9, at this time has completed the basic installation, the later self lifting installation, the main work by the tower crane itself equipment and artificial to complete.10 tower crane from basic height to work height.Each type of tower crane has different self lifting mounting methods. In fact, in addition to carrying heavy loads, the installation of a large number of high-strength bolts is a heavy work.11, the above is the general procedure, the actual installation work in strict accordance with the installation instructions. According to historical experience, tower crane installation accidents often occur in some professional installation team.12, the old type of tower crane installation is relatively simple, but also have independent installation, and now the development of automobile crane is not a must, general use of car crane can complete all the installation.

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