混凝土喷射机中英文对照外文翻译文献.docx

1、混凝土喷射机中英文对照外文翻译文献 (文档含英文原文和中文翻译) 中英文资料外文翻译Summarization and improvement of concrete-ejecting machinesAbstract :The text introduces the principle ,style and development process of dry and wet type concrete-ejecting machines. It analyzes domesticand foreign application instance ,allkindsofconcrete-eje

2、cting machines mostly merit and flaw. Also it introduces somerepresentational wet con-crete-ejecting machines domestic developed. Some flaws of concrete-ejecting machines are improved.Keywords:concrete-ejectingmachines,frame characteristic ,operating principles , highway.Concrete is the use of compr

3、essed air jet, will be allocated a certain level and good water-cement ratio mixing concrete materials, through the pipeline by the jet nozzle, and high speed jet out to the surface by spraying a concrete suppor-t Layer is sprayed concrete construction equipment operations in the main. Asa concrete

4、spraying technology saving concrete and steel, timber, labour-saving and improve construction efficiency and reduce costs, and other characteristics, the concrete applican of the jet increasingly common. Has now been widely us-ed in railway, highway, water conservancy, construction, coal and other b

5、uildi -ng works in construction, a tunnel solution, road slope, construction pit, unde-rground works of temporary and permanent care to support the construction m-achinery operations. 1 1 The work of sprayed concrete mechanism and the development trend In sprayed concrete operations, the overwhelmin

6、g majority of the use of concrete-rotor aircraft, such as jet structure is simple, reliable performance, a small, lightweight, easy to operate and maintenance。Dry jet principle and structure are: the rotor with a liner to a certain speed of rotation, and the combination of pressure plates fixed on t

7、he liner fixed, with a board connected into the wind pipe and discharging elbow, when Rotor equipped with materials in the various materials Cup rotation and into the wind to the elbow and discharging the same time, in the role of gas under pressure, and materials through the elbow and expected to l

8、ose the material transported to the nozzle a nd nozzle in the water Blasting away.Dry concrete jet of the main advantages is a long distance carrier, simple equipment, durable, but because it is so dry nozzles, mixing concrete mixed with water, and therefore the construction dust, are more resilient

9、, dry spraying operations against workers in the dust Health, in particular the narrow roadway construction, dust pollution is more serious 2。From the 1960s onwards, in Western developed countries, wet spraying began gradually introducing the technology, all kinds of wet concrete Jets also be develo

10、ped, sprayed concrete and dry the main difference is that enough (in water-cement ratio requirements should be The volume of) the opportunity to join the mixing of different water。Wet sprayed concrete is expected lose their access to the former Mixture has added a foot of water mixing, the loser in

11、the delivery of the cylinder is the wet concrete; dry sprayed concrete is lost in the transmission of the material did not join the mixing Water dry material (ground humidity mixing natural materials or drying materials), and in sufficient volume nozzle before mixing with water, dry mixture and mix

12、quickly after the whole wet concrete delivered to the nozzle, speed up the coagulation of the doped Afte r the jet to beam a material of construction 3.At the national level, as peoples environmental awareness and enhance the quality of sprayed concrete requirements of the increase, an increasing nu

13、mber of wet concrete into the use of jet aircraft. In recent years, some domestic units also began to develop several wet concrete jet, but the scale of production is still to be expanded. To sum up, jet wet concrete of the main advantages are the following:1) greatly reduced the plane and next to t

14、he nozzles of dust concentration and eliminate the health hazards to workers. 2) high productivity. Dry concrete Jets general no more than 53 m3 / h, and the use of jet wet concrete, artificial operations up to 103 m3 / h, a mechanical manual, up to 203 m3 / h. 3) The rebound was low. Jet Dry, concr

15、ete rebound of up to 15 percent to 50 percent, the wet spray technical rebound rate can be reduced to below 10%. 4) wet spray, easy to control because of water-cement ratio, a high degree of concrete hydration, it can significantly improve the quality of sprayed concrete and improve quality of the c

16、oncrete absorbed.2 Wet concrete Jets and the type of work principleConcrete Pumping main piston pump-jet spray and a wet-wet spraying machine screw pump two categories. Piston pump-jet aircraft will be wet plunger-wet concrete as a concrete pump the basic body jet, with the export pipeline to the nozzle and in this Access to compressed gas will jet out of concrete, wet spray such a heavy machine general However, long distance transmission, Secon