Bad weather stopped the construction of concrete placing boom

5 more winds, thunderstorms, snow, fog and other inclement weather fabric machine should stop the construction work, and measures taken to prevent overturning. Municipal Construction Committee for the regulatory aspects of the concrete, and even extends to the use of safety equipment. Reporters learned yesterday from the Municipal Construction Committee, "Beijing construction concrete placing boom safely Interim Measures," was recently released, and execution in starting December 1.

This "spreader", is not an aspect to weave the warp and weft of the loom, but in the concrete construction industry in the top pouring a common device. From a distance, it looks like a miniature crane, also has a steel bottom bracket, the cross in the air, hanging on steel Traveling hopper car and construction workers in the bottom of the control position, the concrete pouring to the designated place.

The "Safety Management Interim Measures" Municipal Construction Committee this release, requiring at least five winds, thunderstorms, snow, fog and other inclement weather, cloth machine should stop construction work and measures taken to prevent overturning. In equipment inspection, repair, maintenance, it should be shut down, power off. Hydraulic fabric machine operation, repair and maintenance shall be the person responsible.

In addition, this approach also requires, fabric machine each installation, removal, displacement process, the overall contractor full-time security officer should next full stop supervision to ensure construction safety. Fabric machine after each shift is completed, by the general contractor to check and fill out a check each wire even if security "concrete fabric Shift Checklist" can be put into use after passing.

Japan will use water injection to the reactor concrete boom pump

According to Kyodo News 21 reported that Japan will use concrete boom pump to the Fukushima Daiichi nuclear power plant accident in the reactor water. After the truck boom extends up to about 58 meters, accurately to the waste water tank by remote control from a height.
It reported that the Japanese construction machinery to provide triple County's   three truck has arrived at the scene, Gifu County a truck company will also join. Defense Minister Kitazawa handsome said it would use all the same model in Japan pump, in order to ensure sustainable conduct water operations.

It is reported that Japan used truck production from Germany, the body is about 15 meters, used in the construction of the commons upward transport concrete. This pump has been used allegedly blocked the work of the Soviet Chernobyl nuclear reactor accident in the former.

Folding Boom can remote operation from 100 to 300 meters away. After the installation of cameras to the top of the boom, the staff according to the image on the display, the reactor building 30 meters from the ground, the hole formed by the explosion of water to the spent fuel pools. Allegedly 100 tons per hour can filling.

Provides two sets of pump of Yokkaichi, Mie Prefecture, central member of the construction company president Hasegawa Code, said: "can accurately be water in the intense radiation away from the plant hope in times of crisis to help you a hand.." He also expressed concern that: " rushed to the scene as the operator of three members will be afraid of radiation. no problem, right? "

Note the use of concrete mixer truck

1, the hydraulic system pressure should comply with the instructions for use, and shall not be adjusted. Hydraulic oil and fuel oil should comply with the original requirements.

2, before loading concrete mixer truck, you should drain the remaining water and mix barrel debris. During transport to keep the rotation, to prevent concrete segregation. Before concrete mixer truck access to the site and unloading, should make full mixing drum to 14-18 rev / min rotation for 1-2 minutes, then invert discharge. Before reversing, should be parked mixing tube does not turn.

3, the ambient temperature is above +25 degrees Celsius, from the loading, transport, the discharge duration shall be more than 60 minutes, the ambient temperature is below +25 degrees Celsius, the above time shall not exceed 90 minutes.

4, winter construction machinery, should earnestly: before starting the check for icing; work when the barrel and mix carefully exclude residual water supply system, turn off the pump switch, the control lever in the "stop" position.

Tower crane different classification

1, according to the structure type:

1) Fixed Crane Tower: The tower chassis by connecting member fixed to the foundation or the structure, conduct tower crane lifting operations.

2) Mobile tower crane: a running device, you can walk the tower crane.

3) self-elevating tower crane: through its own specialized equipment, increase, decrease tower section to change the lifting height of the tower crane, such as: attachment style and self overall climb (internal climbing) tower crane

Attached Tower: support means attached to the wall by anchoring the tower to the building of self-raising tower crane.

Inner climbing tower crane: Set inside the building, by supporting the structure of the special unit, the machine can be increased with the height of buildings and an elevated tower crane.

2, according to the rotary type points:

Slewing tower crane slewing ring provided at the upper portion of the tower crane tower) 1.

Slewing tower crane slewing ring set 2) in the bottom of the tower, the tower is rotated relative to the chassis of a tower crane.

3, according to the erection method points:

1) Non-self-erecting tower crane: relying on other lifting equipment for assembly into a machine tower crane erection.

2) self-erecting tower crane: relying on its own power units and agencies to achieve tower crane transport state and the working state of mutual conversion.

4, according to the amplitude points:

1) trolley tower crane: lifting trolley that run along the luffing jib tower cranes.

2) The boom luffing tower crane: luffing jib for the pitching motion of the tower crane.

3) folding jib tower crane: lifting operations as needed, jib tower crane can be bent. It can also have performance luffing boom and the trolley.

Truck-Mounted boom pump operating systems

The late 1960s, the introduction of 16 meters Truemax truck-mounted boom pump; in 1986, it developed the world's longest truck-mounted boom pump 62 meters birth. All told, German with nearly two decades, the boom lift height of nearly 40 meters. And again, this record will refresh, and wait for a full 20 years, and this time the protagonist has become Chinese companies. Concrete pump in it step by step with the new new technology:
(1) energy saving, environmental protection has become the development trend of pump.
Improve concrete pump energy saving, environmental performance has become a trend, wind cooling gradually to replace water cooling, engine emission standards also increased, mostly reach Europe Ⅱ or Euro Ⅲ standard.
(2) the control system more functional.
Concrete pump truck boom started nearly two years of rapid development of electrical systems, domestic manufacturers to produce concrete pump electric control system from the traditional PLC control to dedicated controllers and computer intelligent control, via a touch screen, you can achieve human-computer dialogue, The various operating parameters can be stored and displayed on the vehicle to achieve automatic monitoring. Once the machine is running fails, except alarm outside also brings up the relevant parameters for fault analysis, diagnosis. Meanwhile, the application of intelligent control systems technology boom, boom, etc. to achieve a high level of amplitude and intelligent casting.
(3) The structure is more applicable.
Concrete pump truck boom started work often limited by the upper space is required to start when the top height of the lowest boom, boom four fold following generally use a single R or Z-shaped pattern. More than five boom due to space limitations, the type commonly used to achieve RZ combination folding boom extension and retraction, applicability, enhanced mobility and flexibility, especially in the construction of tunnels and indoor work efficiency has improved significantly. Domestic boom length of nearly two years have increasingly long trend, the future will have a longer boom concrete pump truck to the market. In addition, the boom started concrete pump leg work often limited by floor space, especially large boom started concrete pump, concrete pump truck boom started therefore outrigger design showing a personalized, diversified characteristics.
(4) Concrete greater displacement volume.
Centre higher pressure pumping system, greater transport capacity, will become the future development trend of the domestic boom started concrete pump central pumping system. With the boom started concrete pump truck boom bigger and higher, bigger and bigger models, the delivery cylinder bore is also bigger and bigger, and because the progress of the project have become increasingly demanding, requires pumping capacity at 80 ~ 120m3 / h of the project, more and more large displacement will become the future development direction of concrete pump truck boom started. In addition, more and more high pumping pressure. Concrete outlet pressure has now reached 22MPa, but also continue to improve the trend.

Advantages analyze commodity concrete batching station

With the continuous development of concrete machinery industry, commercial concrete batchingstations have mushroomed emerging. Commercial concrete batching station is mainly composed of mixing system, aggregate supply system, powder storage systems, measurement systems, control systems and external ancillary equipment.
Commodity concrete batching stations compared with conventional batching station, a lot of its advantages, the following main points together, listen to Hangzhou Truemax machinery Limited to give you specific explanation below:
First, excellent performance
Twin-shaft compulsory mixer mixing ability, uniform mixing quality and high productivity. For dry hard, semi-hard, plastic and various proportions of concrete mixing good effect. Lubrication system, the spindle drive system adopts full set of imported hydraulic opening mechanism which can adjust the discharge opening degree required. Mixing console mix-axis anti-blocking technology to effectively prevent cement caking on the shaft, shaft seal uses a unique multi-sealed structure, effectively prevent mortar leakage and ensure the continued long-term operation of the entire mixing system. Cleaning system uses high pressure water pump automatic control and manual control,
Each outlet hole is located just above the stirring shaft, stirring improve efficiency, increase water mist to reduce dust pollution and effectively remove cement agglomeration.
Second, the delivery device
It may be provided with three to five aggregate storage, the lower aggregate positions for individual and aggregate aggregate weighing hopper release belt as required. With a loader or belt conveyor to aggregate feed bin. Steel silo can be designed. The lower part of a small warehouse Optional less moisture meter. Aggregate enhance inclined belt conveyor is responsible for the transition to aggregate storage silo, inclined belt tension using a heavy hammer, reliable transmission angle ≤18 °, may also be herringbone or troughed belt or bucket elevator on material, in order to reduce the area.
Third, environmental performance
All of the powder materials from the materials, ingredients, measuring, stirring the materials are fed in a closed state. Blender lid, metering cement warehouse, fly ash measurement positions are connected to the dust discharge pipe filter, aggregate filler panels set up dust resistance, thereby reducing dust emissions. Closed stirring the main building and belt conveyor structure, greatly reduces the dust and noise may pollute the environment. Negative pressure dust removal and special fiber cloth, so that dust produced when the feed completely into the dust without spread to the surrounding, and the collected dust can be recycled conveniently and effectively protect the environment. Users can also choose to import dust removal system.
In addition to the excellent performance, the commodity concrete batching station as well as good stirring performance, maintenance and repair parts of the complete equipment or maintenance ladder with a platform to facilitate inspection and maintenance operations, cleaning with a host of red pumps and two manual operations devices. Platform floor structure and aggregate belt conveyor fully enclosed structure, to ensure that all operations can be carried out regardless of the weather. Given the excellent characteristics of commodity concrete batching station, its market space will infinitely expand over time.

How to reduce the maintenance cost of concrete mixer

As one of the important parts of production cost, the cost of equipment maintenance has been put on the agenda. To reduce equipment maintenance costs, concrete mixer production enterprises can according to their own actual situation, concrete batching plant to focus on the following several problems.

First, as manufacturers of spare parts to good quality, excellent quality of the spare parts can not only help the maintenance personnel timely solve the fault, but also can improve the reliability of the whole system, prolonging the service life of the parts and improve the overall performance of the equipment. As the user should strengthen the use of spare parts for the repair, the damaged spare parts in a lot of repair after you can re-use. To strengthen the production process of spare parts management, and to do a good job in the daily maintenance system, to develop a strict maintenance system, prompting the operating personnel in strict accordance with the regulations to do, to find fault hidden trouble in the bud, to extend the service life of spare parts.
Reduce the maintenance costs of concrete mixer equipment is not through the one or two aspects of the effort to solve the problem, must be through the effective combination of all aspects to make the problem completely solved, and need to persevere in order to achieve good results.