How to choose a standard section

Given that many users can not select the right standard knot, so after taking into account the needs of customers, I briefly explain how to choose the standard section.

First, look there is no anti-counterfeit labels affixed or regular manufacturers posted their security signs, if not, in general such a comparison poor, the quality is not reliable, durable and stand up, so do not freeloaders, is durable the last word.
Second, look at the crane standard section of the production is smooth and delicate, and if so, this is generally more sophisticated, processing and other aspects are in place, such as standard deviation crane standard section will not.
Third ,look at the degree of convergence is good, each link is flexible, whether lubrication, if rust or each convergence point appears relatively slow, so it is best not to buy a house this time is generally more often, and usually do not how to maintain, so be careful the selection criteria section.

Tower crane standard section is based on the relationship between the security of an important part of the tower crane. In the test in the first pay attention to the tower crane foundation endurance manufacturer meets the design requirements. For more information about the various tower crane standard section, you can log on to the website detailed understanding:http://www.towercranechina.com

Some repair and maintenance measures of crane accessories

Machinery and equipment maintenance and repair, brakes agencies should always be checked and gap adjustment brake shoes and brake drum, ensure flexible and reliable. In the friction surface, there should be no dirt exists, in case of contamination must be washed off with gasoline or thinner. Gearbox, transmission, gear and other external part of lubricating and hydraulic oil according to the lubrication requirements of the table. Pay attention to check whether the ministries broken wires and loose rope shares phenomenon. Exceeds the relevant provisions must be renewed immediately. Wire rope maintenance should be in strict accordance with GB5144-85 regulations. Where open gear must have a protective cover.

Always check the connections ministries, if loose should be tightened. The tower crane should check the tightness of bolts at the tower pressure, all connections must have a little shaft cotter pin, and the need to open fully. Always check whether the normal operation agencies, with or without noise, if found faulty and must be immediately removed. When installing, removing, and adjust the rotation mechanism, to be taken to ensure that the center line and the center line of the rotary mechanism gear reducer parallel, its engaging surface not less than 70%, meshing clearance to fit.
Tower crane shall carry out regular inspection, maintenance and repair, transmission parts should have enough oil, for wearing parts must always check, repair or replacement, bolt on machinery, especially frequent vibration parts such as the tower connecting bolts should check whether loose, loose if tightened or replaced if necessary.

Standard set of concrete mixing station equipment is made up of what

Concrete mixing station consists of material feed storage systems, material weighing system, material handling system, mixing system, powder storage systems, powder conveying systems, powder metering systems, water and additive metering systems and control systems and other five major systems and other ancillary facilities components.

Mixer stirring their way into forced mixing and self-loading mixing. Compulsory mixer is mixing station at home and abroad mainstream use, it can be stirred liquidity, semi-rigid and rigid and other dry concrete. Since the fall mixing console main stirring fluidity concrete, rarely used in the mixing station.

Compulsory mixer according to the spindle structure is divided into a planetary mixer, single horizontal shaft mixer and twin-shaft mixer. The integrated use of performance especially in the twin-shaft compulsory mixer is best.

Material weighing system is affecting the quality of concrete mixing station concrete and concrete production cost of key components, mainly divided into aggregate weighing, weighing powder and liquid weighing three parts. Under normal circumstances, 20 cubic meters per hour or less mixing station superposition weighing methods, namely aggregates (sand, stone) with a scale, a scale with cement and fly ash, water and liquid additive were weighed and then put into the water, said liquid additive pre-mixed infighting. In more than 50 cubic meters per hour, mixing station, said the use of various materials weighing independent manner, all have adopted electronic weighing scales and computer control. Aggregate weighing accuracy of ± 2%, cement, powder, water and admixtures weighing accuracy reached ± 1%.

The advantages of the mobile station

Mobile mixing plant is relatively flexible concrete production equipment, some sites due to the duration of short-term, establishment is also a waste of money trouble, so small mobile batching plant to become mainstream, then what is the mobile mixing plants? What are the characteristics of mobile mixing plant is it?

The advantages of the mobile station:

1. The compact design in a single trailer unit concentrated most parts of the mixing station;
2. The mode of operation humane, stable and reliable, stable operation in a variety of harsh environments;
3. imported twin-shaft compulsory mixer, continuous operation, stir, stirring motion powerful, fast;
4. The form of the whole station via the trailer can be quickly transported to the construction site and on-site assembly is completed;
5. Before the factory pre-commissioning is completed without debugging to construction;
6. The high degree of automation, mobile and flexible, easy to operate and stable.

QTZ80 tower crane features and advantages

QTZ80 tower crane features and advantages:

1, QTZ80 tower crane rated lifting moment 800KN.M, maximum weight 8T, maximum working range of 56 meters.
2, QTZ80 independent state tower crane lifting height of 45 meters, can be industrial and civil construction hoisting 14 floors below. Attachment height of 150 meters, can be lifting 50 floors below construction of industrial and civil buildings.
3, QTZ80 tower crane double hanging point, the level of the boom, the use of car horns, turning, hydraulic jacking form, quick and easy installation.
4, QTZ80 tower crane hoisting mechanism, with double-speed wound motor, a smooth start, can achieve high-speed light load, heavy low-speed, high efficiency, low noise.
5, QTZ80 tower crane slewing mechanism adopts ODM series POTAN France's technology, the machine uses advanced power electronic technology, electromagnetic couplings and variable speed planetary gear, starting torque, smooth operation, advanced performance.