Tower Cranes Series Self-ascending Electricl QTZ40(4708)

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QTZ40(4708)Description

Feature: Tower Crane                  Condition: New 

Application: urban construction    Rated Loading Capacity: 4T 

Rated Lifting Moment:400KN.M    Max. Lifting Load: 4T 

Max. Lifting Height:120M              Span:50M 

Model Number:QTZ40(4708)

Certification: ISO9001:2000; CE;Ukraine & Belarus Certificate 

Colour: Orange/ Yellow 

After-sales Service Provided: Overseas third-party support available 

QTZ40(4708) Features

1.Ten years of experience in supplying new self-erecting tower crane with Taiwo Brand.

2. Export to more than 20 countries with CE/ISO/GOST Certificates.

3. Stationary/Travelling, external/ internal climbing tower crane 

4. Impeller blasting/rust protection paint

5. Advanced painting process

6. Potain masts designed with dismountable panels, making teansport easier and cheaper. 

7. New designed mast, can be used to Internal and external climbing tower crane

8. Engineers available to service machinery overseas.   

QTZ40(4708) Specification

Tower Cranes Series Self-ascending Electricl QTZ40(4708)

QTZ40(4708) Pictures

Tower Cranes Series Self-ascending Electricl QTZ40(4708)

Tower Cranes Series Self-ascending Electricl QTZ40(4708)

Tower Cranes Series Self-ascending Electricl QTZ40(4708)



QTZ40(4708) FAQ

Q: What is tower crane?

A: Tower crane is a modern form of balance crane that consist of the same basic parts. Fixed to the ground on a concrete foundation (and sometimes attached to the sides of structures as well), tower cranes often give the best combination of height and lifting capacity and are used in the construction site.


Q: How many meters of the steel wire rope?

A: For normal model, the length of the rope is 100 meters. But we could produce the length according to the customer’s request. 


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 is a tower crane without a collector?
The advantage of the collector is that the tower crane can be turned on one side without any limit, and how many circles can be turned. The tower crane is basically not equipped with collector, because collector generally needs to be located at the center of the tower's turning center, so it is inconvenient for operators to go up and down.
Q:What is the difference between a jack up tower crane and a fixed tower crane?
The jack up tower crane is a tower crane (that is an internal climbing tower crane) that is added and reduced by its own special device, namely, the standard section of the tower (that is, the attached tower crane) or the whole climbing tower itself.
Q:Emergency treatment of interrupted electricity during lifting of tower crane
When the power supply fails, you should first remove the things that are stuck in the gear!
Q:Tower crane body standard section connection bolt screw upward or downward, why?.
Up or down, there is no change in the firm torque of the connecting bolt. Simply choose to go up or down for convenience. Generally no special requirements, it is recommended that the thread upward, so that it is not easy to rust.
Q:What are the necessary safety devices on a tower crane?
(1) lift height limit position limiterFor cranes with variable boom angles, the lifting motion must be stopped immediately when the top of the lifting device rises to the 8OOmm at the lower end of the boom.For luffing cranes, lift the top of the hook to the lower end of the frame 500mm. The lifting movement must be stopped immediately.(2) lifting moment limiter and maximum lift limiter;When the lifting torque reaches 90% of its rated value, the lifting torque limiter shall be able to issue an acoustic or red light to indicate the alarm. When the lifting torque exceeds its rated value and reaches 108% of the rated value, the lifting direction and outward direction shall be stopped.If the weight and amplitude indicator are set, the numerical value should be correct, clear and eye-catching. The digital error shall not exceed 5% of the indicated value.When the lifting weight exceeds the maximum weight, maximum lifting weight limiter should emit light or sound alarm, when the load exceeds the maximum weight of 6%, should stop to enhance the direction of movement, but to allow institutions towards the down direction.
Q:Does tower crane belong to special equipment?
Tower crane is a high-altitude operation, the type of work belongs to special types of work, equipment belongs to special equipment.
Q:What is the wall radius of a qtz50 tower crane?
The working radius is usually 50 meters. There are also 48, 49 meters. For example, 4810, 4910, and 5010, belong to 50 tons of tower cranes.Qtz50 resolves to:Q: crane;T: Tower type;Z: Jack up;50: lifting torque of 50 tons meters.
Q:Protective earthing resistance of tower crane
Q:Do self lifting tower cranes allow a small swing of the boom in jacking operation?
The upper working structure of the attached tower crane is connected with the jacking sleeve frame, and a jack jack is mounted on the top lifting jacket frame. The upper crossbeam of the jack is connected with the jacking frame, and the lower cross beam is provided with a movable claw, and the lower supporting point can fall on the step of the standard section of the tower body. During lifting, first trim jib and balance arm, unlock the top are connected with a lifting sleeve frame with the standard section, start lifting system, lifting jack will superstructure.
Q:In order to ensure the stability of tower cranes, generally along the height of the tower and building a number of meters attached
Self lifting tower crane tower 45 meters high to prevail, such as height of over 45 meters, each increased to 10 meters (less than 5 meters, excluding) demolition costs increase 20%, off-site transportation costs increased by 10%.

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