Product Description

Product Description

>>>Main Paramters of Electric Tower Cranes

Model              QTZ80(6571)        
Max Load 8 t
Tip load 1.0t @56 m
Jib length 60m
Mast 1.8*1.8*2.8 m
Hoist height according to your demand
LIft speed (a=2) 100/50/10 m/min (a=4) 50/25/5 m/min
Trolley speed 22/24 m/min
Slewing speed 0.62 r/min
Jack clmbing speed 0.4 m/min
Main electric Schneider

>>>Safety Feature for Construction Electric Tower Crane

1   Torque limiter it will warns when lifting weights reach to 90% of rated lifting torque.
When reach to 110% of the rated lifting torque, it will limit rising upwards and trolley.
2 Weight limiter Control the maximum lifting capacity.
lifting weight reach to 40% of the rated capacity, limit high-speed lifting;
lifting weight reach to 110% of the rated capacity, limit  the lifting up
3 Height limiter Control the lowest and highest extreme position of lifting hook
4 Slewing limiter Control the extreme turns number of turn left and right
5 Amplitude limiter Control trolley limit position of inward and outward
6 Overload protection If the material is over the capacity, the crane will give a sharp warning for protection itself
7 Emergency brake If the operation staff  encounter some emergency situation, we could start the emergency brake system to protection the related treasure
8 Control Method Room control or remote control to avoid any injury to the operation staff
9 Main lifting motor with thermal protection and currency protection

>>>Our Advantage for Electric Tower Crane

1.We are group company but also manufactuer,which have more than 10 years export experiance

2.we can direct sale the crane towers for you with high quality and competitive price

3.We can customized for you, the working height, working radius, max load capacity and so on

 

>>>What We Supply for Electric Tower Crane

Model Standard Model Jib Length/m Tip load /t Max Load/t
QTZ31.5 4208 42 0.8 3
QTZ40 4808 48 0.8 4
QTZ50 5008 50 0.8 4
5571 50 1.0 4
QTZ63 5571 50 1.0 5
5013 50 1.0 6
5610 56 1.0 6
QTZ80 5610 topless 56 1.0 6
5513 55 1.3 6
6571 60 1.0 6
6571 60 1.0 8
QTZ125 6015 60 1.5 8 or 10
QTZ160 6516 65 1.6 10
QTZ250 7030 70 3 12 or 16
QTZ315 7040 70 4 16 or 18
QTZ400 7055 70 5.5 25

>>> Our Service for Electric Tower Crane

Pre-sale Service
1. We can customize products according to client’s demand. Various types of tower crane for your choice.
2. Good Quality & Factory Price & Quick Response & Reliable Service, are what we are trying best to offer you
3. All of our products are produced by our professional workmen and we have high efficiency sales team, you can totally trust us.
4. We have more than 20 years experience in designing and manufacturing, we cherish every order from our honored clients.

After your selection
1. We will count cheapest shipping cost and make invoice to you at once.
2. Test each machine before delivery to ensure their quality, then send out to you after your payment.

After-sale Service
1. Our engineers are available to guide the operators abroad. 
2. We are very glad that customer give us some suggestion for price and products.
3. If you have any question, please contact us freely by E-mail or Telephone

>>> Main Parts Brand We Use

>>>Packing Delivery
Steel structure naked or packed by bubble. 
Electric part and easily demand parts packed by high quality plywood box

>>>Payment Terms
1.T/T
2.LC
3.Western union

>>> Company Information 
Tavol Cranes Group
 is the professional crane and lift platform manufacturer in China .

We Design,Manufacture,Installation,Repair,Maintenance,Trade and Export following products:
+ Top Kit Tower Crane, Topless Tower Crane, Building Hoists etc.
+ Scissor Lift, Cargo Lift, Wheelchair Lift , Dumbwaiter, Dock Ramp etc

 

>>>Contact
 If you are interested in electric tower crane, please no hesitate to contact us with following parameters:
1. Max crane height under jib ?
2. Working radius?
3. Max load ?
4.Tip load 

Best Regards 
Kitty Yang

>>>Our Service

Pre-sale Service
1. We can customize products according to client’s demand. Various types of tower crane for  your
 choice.
2. Good Quality & Factory Price & Quick Response & Reliable Service, are what we are trying best
to offer you
3. All of our products are produced by our professional workmen and we have high efficiency sales
team, you can totally trust us.
4. We have more than 20 years experience in designing and manufacturing, we cherish every
order from our honored clients.

After your selection
1. We will count cheapest shipping cost and make invoice to you at once.
2. Test each machine before delivery to ensure their quality, then send out to you after your
payment.

After-sale Service
1. Our engineers are available to guide the operators abroad. 
2. We are very glad that customer give us some suggestion for price and products.
3. If you have any question, please contact us freely by E-mail or Telephone

>>>Packing Delivery
Steel structure naked or packed by bubble. 
Electric part and easily demand parts packed by high quality plywood box

>>>Payment Terms
1.T/T
2.LC
3.Western union

>>> Company Information 
Tavol Cranes Group
 is the professional crane and lift platform manufacturer in China .

We Design,Manufacture,Installation,Repair,Maintenance,Trade and Export following products:
+ Top Kit Tower Crane, Topless Tower Crane, Building Hoists etc.
+ Scissor Lift, Cargo Lift, Wheelchair Lift , Dumbwaiter, Dock Ramp etc
 

>>>Contact
 If you are interested in 5t –25 tons tower crane, please no hesitate to contact us with following parameters:
1. Max crane height under jib ?
2. Working radius?
3. Max load ?
4.Tip load 

 

After-sales Service: Yes
Warranty: 12 Months
Certification: GS, CE, ISO9001
Condition: New
Maximum Lifting Height: 100-150m
Maximum Lifting Weight: 6t

Customization:
Available

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Customized Request

pulley

The benefits of using pulleys

A pulley is a mechanical device that converts force into rotation. There are many advantages to using pulleys. Let’s take a look at a few of them. This article will describe the advantages, types, applications, and power sources of pulleys. You can then choose the pulley that best suits your specific needs. If you’re looking for a new tool to help you with a certain task, this article is for you.

Mechanical advantage

The mechanical advantage of a pulley can be defined as the ratio of applied force to the applied force. The mechanical advantage of a pulley can be calculated by considering several factors, including weight and friction. It can be calculated by the force applied per unit length of rope and the number of pulleys used. In a single-circuit system, the force required to lift a heavy object is equal to the user’s body weight.
The mechanical advantage of a pulley can be realized by comparing it to a seesaw. Both uses of rope are suitable for lifting objects. A rope four times heavier than a kilo is four times as effective. Because the forces on both sides of the pulley are equal, a small force is enough to move a large weight a short distance. The same force can be applied to a large mass to lift it several meters.
After introducing the concept of mechanical advantage, learners will practice using the pulley system. In addition to testing the pulley system, they should also calculate its mechanical advantage. Using either the instructor-provided handout or the learner’s workbook, students will determine how easily the pulley system functions. Once they have completed the test, they can discuss their results and how the system can be improved. These courses are best completed as part of a mini-unit or as a standalone main course.
The mechanical advantage of the pulley system is proportional to the number of rope loops. This circuit requires the same force as the dual circuit to lift heavy objects. A single lap requires only a third of the force to lift a double lap, while three laps require almost half the energy required for a single lap. The mechanical advantage of the pulley system becomes constant as the number of cycles increases.
The 3:1 Mechanical Advantage system feels like lifting a 300-pound load with three feet of rope. The three-foot-long rope moves the load one foot high. Understanding the mechanical advantages of pulleys is critical for rescuers when trying to create the perfect pulley system. Ideally, the pulley system will be anchored to a nearby rock, tree, pole or person – if the weight is not too heavy.
pulley

Types of pulleys

There are several types of pulleys. V-belt pulleys are the type commonly used in vehicles and electric motors. “V” pulleys require a “V” belt, and some even have multiple V grooves. “V” pulleys are often used in heavy duty applications for power transmission because they reduce the risk of power slippage.
Composite pulleys combine the properties of fixed and movable pulleys. Compound pulleys are able to change the direction of force while requiring relatively low force to move even the heaviest loads. Mechanical advantage is a measure of the effectiveness of a machine or equipment. It can be divided into three categories: force, distance and mechanics. Once you understand how each type works, you can design complex machines.
Fixed pulleys: These pulleys are the most basic type of pulleys. They use ropes and slotted wheels to move with the lifted object. Because they are so simple to set up, lifting heavy objects is a breeze. Although the moving object feels light, it is actually heavier than it actually is. These pulleys are used in construction cranes, utility elevators and many different industries.
Compound Pulley System: A pulley pulley is a combination of two fixed pulleys and one movable pulley. Compound pulley systems are effective for moving heavy objects because they have the largest force multipliers and are flexible enough to change the direction of the force as needed. Composite pulley systems are commonly used in rock climbing, theater curtains and sailing. If you’re looking for a pulley system, you can start by evaluating the types of pulleys and their uses.
Construction Pulleys: These are the most basic types of pulleys and have wheel rails. These pulleys can be lifted to great heights and attached to chains or ropes. They allow workers to access equipment or materials from greater heights. They are usually mounted on wheels with axles and secured with ropes. They are essential tools for construction workers. There are many different types of pulleys out there.

energy source

Belts and pulleys are mechanical devices used to transmit energy and rotational motion. The belt is connected to the rotating part of the energy source, and the pulley is mounted on the other. One pulley transmits power to the other, while the other changes the direction of the force. Many devices use this combination, including automobiles, stationary generators, and winches. It is used in many home applications, from conveyors to treadmills. Pulleys are also used for curtains in theater halls.
Pulley systems are an essential part of modern industry and everyday life. Pulleys are used in elevators, construction sites and fitness equipment. They are also used in belt-driven generators as backup power. Despite their simple and seemingly humble beginnings, they have become a versatile tool. From lifting heavy objects to guiding wind turbines, pulley systems are widely used in our daily lives.
The main reason why pulleys are so popular is the mechanical advantage they offer. They can lift a lot of weight by applying very little force over longer distances. For example, a small motor can pull 10 meters of cable, while a large motor can pull 1 meter. Also, the work done is equal to the force times the distance traveled, so the energy delivered to the large motor is the same.
The power source for the pulley system can be cables, belts or ropes. The drive element in a pulley system is usually a rope or cable. A belt is a loop of flexible material that transmits motion from one pulley to another. The belt is attached to the shaft and a groove is cut in the pulley. The belt then transfers energy from one pulley to the other through the system.
pulley

application

A pulley is a mechanical device used to lift heavy objects. They reduce the amount of work required to lift heavy objects and are an excellent choice for many applications. There are several different applications for pulleys, including elevators, grinders, planters, ladder extensions, and mountaineering or rock climbing. Let’s take a look at some of the most popular uses for pulleys in modern society. These include:-
A pulley is a mechanical device that changes force. To use, you wrap the rope around it and pull down to lift the object. While this device is very useful, a major limitation of using pulleys is that you still have to apply the same force to lift the object as you would without the pulleys. This is why people use pulleys to move large objects like furniture and cars.
In addition to lifting heavy objects, pulleys are used in elevators, flagpoles and wells. These systems allow people to move heavy objects without straining their backs. Many other examples of pulleys in the home include garage doors, flagpoles, and elevators. They also help raise and lower flagpoles, which can reach several stories high.
There are two basic types of pulleys: movable and fixed. Fixed pulleys are attached to a ceiling or other object using two ropes. Modern elevators and construction cranes use movable pulleys, as do some weight machines in gyms. Composite pulleys combine movable and fixed pulleys to minimize the force required to move heavy objects.
Another type of fixed pulley is the flagpole. A flagpole can support a country, organization, or anything else that needs to be lifted. A taller flagpole creates a prouder moment for those who support it. The operation of the rope and pulley mechanism is very simple. The user simply attaches the flag to the rope, pulls the pulley, and he or she can watch the flag rise and unfold.

China factory Tower Crane Spare Parts Nylon Pulley 7016 Nylon Wheel   pulley bearing	China factory Tower Crane Spare Parts Nylon Pulley 7016 Nylon Wheel   pulley bearing
editor by CX

2023-07-07