What are the specifications of the standard section of tower crane?

Arranged by length * width * height: roughly: 1.5x 1.5x2.2m,1.5x/.5x2.5m,1.61.6. 6 1。 5x 2。 5m。 1。 6x 1。 6x 2。 8m， 1。 8x 65448

According to the height: the height is 2.2 meters, 2.5 meters, 2.8 meters, 3 meters, etc.

Extended data:

The standard section of tower crane can be divided into integral standard section and sheet standard section according to whether it can be disassembled or not.

The standard section of tower crane is an important part of tower crane, so it occupies a very important position in the whole tower crane.

No matter what brand of tower crane, the standard section used is within the above range, because the drawings used by our domestic tower crane manufacturers are similar.

Moreover, the production of tower crane standard section is also very demanding. At present, there are many companies that produce tower crane standard sections and tower crane accessories, with different scales and different product quality. We must choose good manufacturers.

Mobile tower cranes can be divided into four types according to different walking devices: crawler, tire, automobile and crawler. The tower of the track tower crane is fixed on the walking underframe, which can run on the specially designed track with good stability, load-bearing walking and high working efficiency, so it is widely used in construction and installation projects. Tyre-type, automobile-type and crawler-type tower cranes have no track device, so they are convenient to move, but they cannot walk with load and have poor stability.

According to the different installation positions, fixed tower cranes can be divided into attached jack-up tower cranes and internal climbing tower cranes. Attached jack-up tower crane can rise with the rise of buildings, which is suitable for high-rise buildings. The building structure only bears the horizontal load from the tower crane, which is convenient to attach, but it takes up more steel for the structure. The internal climbing tower crane climbs inside the building (elevator shaft and stairwell) with the help of a set of supports and lifting system, which is very troublesome, but it takes up less structural steel and does not need to install the foundation, and all the weight and load are borne by the building.

According to the Announcement of the Ministry of Construction on Promoting the Application of Restricted Use Technology in the Eleventh Five-Year Plan (No.659), tower cranes (tower cranes; Nbsp; The service life of the crane is specified as follows:

(1) The following three types of tower cranes can continue to be used after they have passed the assessment by a qualified assessment agency:

1.630 kn-m or less (excluding 630 kn-m) and the factory life exceeds 10 year (excluding 10 year);

6. Tower cranes with a production life of 630 ~1250kN m (excluding1250kN m) and more than 15 years (excluding 15 years);

3. 1250kn.m and more than 20 years (excluding 20 years) tower crane.

(2) If the service life specified in the instruction manual of the tower crane is less than the above provisions, the service life specified in the instruction manual shall be followed.

(3) Except for the whole machine, the scrapping of the main load-bearing structural parts of the tower crane shall be carried out according to Article 4.7 "Scrapping and Working Life of Structural Parts" of the Safety Regulations for Tower Cranes (GB5 144—2006).

From the technical development of tower crane, although new products emerge one after another, and new products have improved in production efficiency, simple operation, easy maintenance and reliable operation, the technology of tower crane has not changed fundamentally.

The research of tower crane is developing in the direction of combination. The so-called combination is to divide the tower into several parts according to the structural and functional characteristics, and divide each part into several modules according to the requirements of serialization and generalization and the principle of modular system.

According to the parameter requirements, select appropriate modules to form tower cranes with different technical performance characteristics to meet the specific needs of construction. The implementation of combined tower crane is helpful to speed up the development progress of tower crane products, save product development costs and better serve customers.

Tower cranes are divided into two categories: upper rotary tower cranes and lower rotary tower cranes. Among them, the former has higher bearing capacity than the latter. On many construction sites, we see tower cranes with top-rotating jacking and joint connection. According to whether it can move, it can be divided into walking type and fixed type. The tower of the fixed tower crane cannot rotate, and it is installed on the whole concrete foundation or X-shaped concrete foundation in a strip shape. When building a house, it is generally fixed.

Spray paint once every six months to one year. Rust spots, oil stains and other dirt on the metal surface should be removed before painting.

Wire rope and its maintenance;

Commonly used varieties are phosphating coated wire rope, galvanized wire rope and smooth wire rope.

1. The wire rope should be prevented from winding, kinking, bending or being stuck by sundries during use, and from rubbing against machinery or other sundries.

2. After the tower crane is installed (before use), the steel wire rope should be lubricated and coated with graphite grease, and then the steel wire rope should be lubricated according to the "Crane Lubrication Table".

3. The overall design of tower crane does not allow the steel wire rope to have infinite life, and it should be scrapped under the following circumstances:

A 6× 19-D(D wire rope diameter) of steel wire rope has more than 5 broken wires in 6d and more than 10 in 30d.

B6×37―d(d wire rope diameter) of steel wire rope has more than 65,438+00 broken wires in 6d and 65,438+09 broken wires in 30d.

C even if the number of broken wires does not exceed 5 within 6d, the wire rope should be scrapped.

D although the wire rope is not broken, the wear of the wire rope reaches 40% of its diameter, or the wire rope is reduced by 7% or more relative to the nominal diameter, or the wire rope is obviously bent.

E wire rope loses its normal shape, resulting in deformation, such as wave, cage twist, strand extrusion, steel wire extrusion, local increase of rope diameter, kink, local decrease of rope diameter, and some flattening and bending.

References:

Baidu Encyclopedia-Tower Crane Standard Festival