Know: "Tower"

concept

Tower crane, short for tower crane, is also called tower crane. It is a kind of lifting equipment used in construction.

Industry classification attribution: Machinery -> Construction Machinery -> Hoisting Machinery -> Building Hoisting Machinery -> Tower Cranes.

Classified according to national standards, the model standard for tower cranes is QT, where "Q" stands for "crane" and "T" stands for "tower." General domestic standard titles are like this. Of course, because our country learns from Germany's Liebherr and French Potain's technology manufacturing tower cranes, some manufacturers also define model names according to foreign coding laws.

Tower cranes can also be divided into a large number of different types depending on the design, such as self-elevating tower cranes, inner climbing tower cranes, flat-head tower cranes, boom-type tower cranes, and quick-mounted tower cranes. There are also many different criteria.

To add: The tower crane can be divided into the following forms: 1. Upper rotary type: QT, upper rotary tower crane; 2. Upper rotary self-rising type: QTZ, upper rotary jack-up tower crane; 3. Lower rotary type: QTX , Lower rotary tower cranes; 4. Lower swing jack-up: QTS, lower swing jack-up tower crane; 5. Quick installation type: QTK, quick-mount tower crane; 6. Fixed type: QTG, fixed Tower crane; 7, climbing type: QTP, climbing type tower crane; 8, tire type: QTL, tire type tower crane; 9, automotive type: QTQ, car is a tower crane; 10, track type: QTU , Tracked tower cranes.

Tower machine composition

In general, the function of each part of the tower crane can be divided into: foundation, tower body, jacking, turning, lifting, balance arm, lifting boom, lifting trolley, tower top, driver's cab, and amplitude change.

Tower crane installed on the ground requires a basic part; the tower body is the tower fuselage, but also the elevated part; the lifting part is to make the tower crane can be raised; the rotation is to keep the upper part of the tower crane can be rotated horizontally; lifting mechanism is used to Lift the weight; balance arm is to maintain the balance of the moment; lifting arm is generally the lifting part of the weight; the trolley used to install the pulley and the steel rope and the hook, but also direct part of the force; The top of the tower is, of course, used to keep the boom in balance; the cab is the place to operate; the range is to make the trolley run along the track.

The tower crane itself is elevated

Many people do not understand the rise of the tower crane itself. In fact, it is very simple. The tower crane has a single jacking rack. When the roof is hoisted, the roof rack first rises upwards. After the tower crane is raised, the height of the tower tower is higher than the height of the tower tower. There will be a space where the standard section of the tower body will be installed in this space, where the rack will rise. Once again, the standard section will be installed inside the vacated rack so that as the standard section continues to increase, Is the tower crane high?

Tower model and price

The price of the tower crane varies according to the type and model size, and the price ranges from tens of thousands to tens of millions. The domestic domestic tower cranes in Shandong are generally cheaper due to their reduced design prices. Foreign brands such as Lishui Haier, Potain, and Komansha are priced at tens of millions of dollars.

Domestic common models:

Note: With * is the current popular model.

QTZ31.5A (3808) --- now basically eliminated.

QTZ31.5B (4206)

QTZ40 (4208/4708/4808*/4810)

QTZ50(5008/5010*)

QTZ63(5013*/5610*)

QTZ80(5513/5612)

QTZ100 (5516/6010)

QTZ125 (6018/6515)