Tower crane

Has a high tower of tower cranes, crane installed at the top of the Tower, have higher effective height and larger radius, the tower crane arm can turn 360. Consequently, tower cranes and construction lifting and vertical transportation to be widely applied. Types of tower cranes, according to whether the running gear, luffing, rotating parts and climb and so divided. Below briefly describes the common rail type, climbing type, attached tower crane.

(1) rail-mounted tower cranes. Rail-mounted tower crane crane is one of the most widely used in civil engineering.

It can walk with heavy, fan kitchen, homework, and fewer non-productive time, high production efficiency. Primary properties of rail-mounted tower cranes: jib length, crane, lifting, lifting speed and walking speed, and so on.

(2) climbing tower crane. Also known as the inside-climbing tower crane, typically installed in the building's elevator shaft within the Bay or ad hoc can also be installed inside a tubular structure, relying on climbing mechanismincreases with structure, usually every construction 3~Sm, crane will climb once, the tower height to be around 20m, lifting height depends on the construction of a high degree.

Climbing crane's advantages are: cranes building supports, towers are a short, lifting height, but does not occupybuildings in outer space. The disadvantages are: driver jobs often do not see lifting the whole process needed signal, demolished after the end of construction complex, generally require auxiliary crane dismantling.

(3) the attached tower crane. Also called self-elevating tower crane is directly fixed to the building or structure on a concrete foundation near, as the structure rises, continue to pick their own high towers, the lifting height increases. Stable Tower, the Tower every 20m about height stem and structural anchorage. -Attached tower crane installed on structures nearby, drivers can see the whole process of lifting, their installation and disassembly without prejudice to the construction process.

Flatbed trailer carrying helicopters on highway

Flatbed trailer carrying helicopters on highway

March 19, at 3 o'clock in the afternoon, Texas highway traffic in Qingdao-yinchuan Freeway patrol, discovereda flatbed trailer transport turned out to be one of the helicopters above.

It is understood that the helicopter weighing up to a ton, before boarding the plane, the driver faces covertarpaulin, with screws at the bottom side with a rope reinforcement, the wing is placed directly in the car on the"heavy burden". Since there is no set barrier, fuselage with the semi-trailer has a slightly shaking, some passingcars decelerate in succession after seeing the helicopter, trailing behind the trailer and watched, even drivers tookout his mobile phone to take pictures.

High-speed police quickly stopped the flatbed trailer. Driver chef Wang avers, Shijiazhuang city, the plane was acivilian aircraft of the enterprise, because it is a new machine, covering tarpaulin was afraid to damage theaircraft fuselage painting, on the other hand, Shijiazhuang company urgently, so no side guardrails installed onhigh speed under. "I thought not ultra high, wide and not overloaded, slow down just fine. "Chef Wang avers.Police told Wang, on the highway carrier aircraft to make covered with tarpaulin and side rails, choose lesstraffic at high speeds, avoiding cars on our roads slow spectators. Then, assisted by the police, Wang once againchecked the helicopter and fixtures, escorted by a police car pulled out of the area.

http://sinosemitrailer.com/

Car carrier trailer hanging on cliff's edge

Car carrier trailer hanging on the cliff's edge

Recently, a car carrying trailer carrying 18 cars had an accident in the territory of the hukun Expressway. Trailercargo compartment hanging outside in Lucan.

At 14 o'clock, hukun Expressway West uphill near Carey, a trailer lost control to taxi back, did not halt untilafter breaking barriers. "Kan under its right rear wheel, suspended in a 10-meter-high road on the ridge. "Thepolice said.

After the incident, the traffic police are called in to two giant cranes, shifting and aligning the car carrier trailer.After 4 hours of effort, making completion of the disposal.

Purchase concrete mixing station matters needing attention

• Purchase concrete mixing station matters needing attention
  1. construction of the performance of concrete marking; as to select what kind of mixer. Such as water projects must use forced mixer. In addition, in accordance with available matching ingredients mixing concrete material types and storage silos.
  2. construction of concrete tasks and their durations; use this parameter to select multiple specifications of mixing plant. Set total amount m of concrete concrete pouring day t; work for h hours per day using coefficients for k, you should use a mixing station specifications X=M/T*H*K, where k is 0.7-0.9. Also be considered in the selection of the transportation for concrete conditions. Such as: direct pump return of vehicle transport. The volume of transport vehicles is also an important basis for batching plant model.
  3. construction environment and object; buyers in a concrete mixing station, construction objects and construction environmental impacts should be considered, so as to ensure the smooth construction and construction quality.
  In the following cases we recommend the best prepared.
  A. when sites require one-time pouring a large amount (according to the optional mixing mixing for more than 12 hours), and high enough quality requirements, and no reinforcements when the mixing station nearby, it is best to choose two sizes smaller mixing plants, or choose a single master, a pair of two-machine configuration.
  B ... when site inaccessible, the maintenance staff when you need to spend a lot of time in and out of the site, the best choice with the same smaller size double-station, or get enough spare parts, thus ensuring smooth construction progress.
  C ... when the construction to more decentralized, but the distance between sites is not too far, truck-mounted concrete conveyor delivery radius of no more than half an hour by car, dump truck transporting not more than a 10-minute drive away. Best use of multiple-set mixing in order to improve the utilization of plant construction and economic benefit.
  4. the operator quality; generally, small plant structure is relatively simple, the control system is relatively simple. Original low requirement for operation and maintenance personnel. While the larger complex, high degree of automation, so the requirement for operators is higher. So when you buy mixing station other than to consider several factors, this article should also be considered.
  5. preparation of choice in the General case, manufacturers have a mature product preparation, such as specifications, quantity, variety, etc. You may raise your special request when ordering the product. We will do our best to meet your requirements. But avoid tān dà qiú quán when purchasing products, it would create economically not to waste. When buying products in addition to references other than the prices of different suppliers, we should pay special attention to the preparation of inventories from different manufactures. In addition to the above specifications, variety and quantity, the most important thing is the kit manufacturer. Fully above one by one, you can always choose the most suitable model. In selecting the models do not go for the best, but should pursue the most suitable and adapted to your needs, because that choice is the most economical and effective.
  At present, the market is dominated by intermittent mixing station. The process flow is: production and distribution at no better than mixers mixing of raw materials, then stir into blender. Stir until discharging into the truck.http://heavymc.net/
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