Why use concrete pumps?
Under different construction conditions, the reasonable selection of concrete delivery methods and equipment is extremely important for accelerating the progress of the project, reducing the cost of the project, improving labor productivity, and ensuring the quality of the concrete structure.
What are the ways to transport concrete pump?
What type of pump is best for concret? Commonly used vertical and horizontal distance concrete delivery machinery are: elevators, cranes, belt conveyors and concrete pumps. Elevators are mainly used for vertical delivery of concrete, but it is still necessary to use a manual cart to enter and exit the elevator, which is very inconvenient.
Tower cranes use concrete hanging tanks for lifting. When the building is relatively tall, the crane also has to transport various building materials, components and templates, which will cause the crane to be busy, resulting in cross-operation and mutual interference. Belt conveyors are powerless to transport concrete at a high vertical height.
Concrete pumps are a more ideal type of concrete transportation equipment. They can solve the horizontal and vertical transportation and pouring of concrete at the same time.
When using concrete pumping equipment
Concrete delivery pumps are a type of equipment that uses pipelines to transport concrete. In the construction of on-site cast reinforced concrete structures, the transportation and supply of concrete accounts for about 1/3 of the total time spent. Especially in high-rise or super-high-rise construction projects, areas with heavy traffic and narrow sites, the advantages of concrete pumps are more prominent.
What are the advantages of concrete pumps?
Concrete pumping construction has the following characteristics:
1. High degree of mechanization, less labor required, and simple construction organization.
2. Concrete transportation and pouring operations are continuous, construction efficiency is high, and project progress is fast.
3. The pumping process has strict requirements on concrete quality, and it can be said that pumping is a test of concrete quality. Because pumping is continuous, concrete is not easy to segregate during pumping, and the slump loss of concrete is not large, so it is easy to ensure the quality of the project.
4. Operation safety.
5. It has strong adaptability to the construction surface and a wide range of operations. The concrete delivery pipeline can be laid to other difficult-to-reach places, and the concrete can be filled and poured in place under a certain pressure. The pumps can also be used in series to increase the delivery distance and height to meet various construction requirements.
6. There is little mutual interference with other construction machinery. While pumping, other construction operations can be carried out near the delivery pipe.
7. Under normal pumping conditions, the transportation of concrete in the pipeline will not pollute the environment, and civilized construction can be achieved.
8. Under the condition of proper construction layout, the project cost can be reduced.
What are disadvantages of concrete pumps?
However, the concrete pumping construction method also has certain limitations, which are mainly manifested in the following aspects:
1. In addition to meeting the quality requirements of the project, the mix ratio of concrete must also meet the requirements of pipeline transportation, such as slump, maximum particle size of concrete aggregate, and the ratio of cement and fine aggregate.
2. The delivery distance of concrete is limited by the diameter of the delivery pipe, the performance of the concrete pump distribution valve and the outlet pressure.
3. Concrete pump operators must have a certain level of technical skills. They must not only master the use and maintenance methods of the machinery, but also understand some knowledge of concrete construction technology and be able to judge the quality and pumpability of concrete.
4. It is difficult for concrete pumps to transport dry and hard concrete, which limits the scope of use of concrete pumps.
5. When the temperature is below -5℃, special measures are required for pumping.
Application of concrete pumps
According to the characteristics of concrete pumps, concrete pumps are mainly used for: large high-rise or super high-rise building projects, large bridge projects, tunnel projects, etc. Concrete is pumped to a certain distance and height for pouring through concrete pumps. Compared with other methods, it can not only reduce heavy physical labor, but also carry out continuous operations, thereby shortening the construction period, reducing the cost, and making the construction more civilized.
Classification of concrete pumps
There are many ways to classify concrete pumps, roughly the following:
1. Classification by the driving method of concrete pumps: there are piston type and extrusion type, and most of them are piston type. In addition, there are also forms such as water pressure diaphragm type and air tank type pumps.
2. Classification by transmission mode of concrete pump: Among piston concrete pumps, there are mechanical piston pumps and hydraulic piston pumps. Most of them are hydraulic piston pumps. Hydraulic piston pumps can be divided into water pressure type and oil pressure type according to the different media that push the piston. Most of them are oil pressure type.
3. Classification by whether the pump body can be moved: there are three types: fixed pumps, trailer pumps and automobile pumps. Among them, trailer pumps and automobile pumps are more widely used.
4. Classification by the form of reversing valve: there are rotary valves, gate valves and “S”-shaped pipe valves, etc., and gate valves and “S”-shaped pipe valves are currently more commonly used.
How much does a concrete pump truck cost?
Zhengzhou Smat Machine is a professional concrete pump supplier that can provide customers with the most affordable prices in the industry.
Smat Machine produces trailer and automobile hydraulic piston pumps, and the reversing valves use gate valves and “S”-shaped pipe valves. This is what is usually called a trailer pump and a pump truck. For trailer pumps, the original power is an electric motor or a diesel engine according to the needs.
Model compilation of concrete pump
D indicates that the main power is a diesel engine,
No D indicates that the main power is an electric motor
Outlet pressure (unit: MPa) Stroke of the main oil cylinder (unit: dm) Type of distribution valve (C indicates S-type valve, A indicates gate valve) Theoretical delivery displacement (unit: m3/h)