外文翻譯--混凝土噴射機(jī)的概述及改進(jìn)-全文預(yù)覽
【正文】 0 (4): 61262. [3] Wang Xiaobao. Wet concrete Jets and the type of development [J] . Engineering machinery, 2020 (11): 48249. [4] Chen HuiHan. Improve rotor aircraft service life of concrete technical means [J]. Well built, 2020 (8): 36237. [5] Fan Guangqin, Zeng Kang Sheng, Xu Long Wharf, etc. jet fly ash concrete support of the pilot study [J]. Well built, 1993 (2): 66267. [6] Yi Gong initiatives, Han Jun, ZHANG Renwater. High Strength of sprayed concrete [J]. Coal Science and Technology, 1993, 21 (2): 40242. [7] Wang Fangrong. Analysis of China39。s environmental awareness to be increased. 3) wet concrete jet operations, more plex equipment, operation and maintenance of jet aircraft for less than dry. 4) the use of wet concrete jet operations, higher equipment investment. 5 Improvement of concreteejecting machines After the concrete improvement of the characteristics of a jet 1) dust better. The improved use of the seal can not be dust, has greatly improved the working conditions of workers, increased labor productivity. 2) increase the flexibility of highadhesive rubber material cavity. Concrete can be an effective solution to the problem of bonded easily, remove the concrete to reduce the number of bonded and improve labor efficiency. 3) use of wearresistant rubber pads. Rubber mats more than double the wear resistance, a decrease of rubber pads to reduce the frequency of the use of replacement cost. 4) the overall change from the original drive shaft posed of three parts, not easy to solve the demolition, the problem of maintenance. Improve the difference between before and after the concrete Jets 1) the original concrete jet rotating body formed by the wearresistant cast iron foundry, without treatment, after the rustbonding, improved after the jet cavity spraying antirust treatment and greatly reduce the possibility of a bond. 2) the original concrete jet rotation of direct contact with the material I, Mifengbuyan。 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 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 people39。 Summarization and improvement of concreteejecting machines FAN Hua QIULinfeng CHENLingfang Abstract :The text introduces the principle ,style and development process of dry and wet type concreteejecting machines. It analyzes domesticand foreign application instance ,allkindsofconcreteejecting machines mostly merit and flaw. Also it introduces somerepresentational wet concreteejecting machines domestic developed. Some flaws of concreteejecting machines are improved. Keywords:concreteejectingmachines,frame characteristic ,operating principles , highway. Concrete is the use of pressed air jet, will be allocated a certain level and good watercement ratio mixing concrete materials, through the pipeline by the jet nozzle, and high speed jet out to the surface by spraying a concrete support Layer is sprayed concrete construction eq
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