Shield machine - a "steel pickaxe" that can create tunnels
Seeing that the workers in the factory building were assembling the shield machine, the authors had a keen interest in this “bulkâ€. "This is the tunnel machine for excavating the tunnel. At present, it is stepping up the assembly process." The staff of the Xinjiang Construction Company of Tiejian Heavy Industry Co., Ltd. said that the diameter of the machine body of the shield machine is 6.4 meters and the total length is 83 meters, which is equal to 7 vehicles and 12 meters long. The BRT bus has a body weight of more than 500 tons. The author understands that the company's main focus is R&D, manufacturing, supply, and service of full-surface shield machines/TMBs, taking into account R&D, manufacturing of mine tunnel construction equipment and large-scale mines and other mine-use special boring equipment. The machine has been used for the construction of subway traffic in Urumqi. It is understood that the plant is divided into 6 parts, in addition to the shield machine assembly area, there are a number of areas such as machining and cutting areas in the sea area, special assembly and installation areas, and so on. Rock tunnel boring machines, spray wet vehicles, mixers and other equipment are also Production in various workshops. With the commencement of rail transit on the 2nd, 3rd and 4th lines of Urumqi, this year, Tiejian Heavy Industry Xinjiang Co., Ltd. is expected to newly sign 20 shield machines for the construction of subways. According to Liu Shuangxi, deputy general manager of Tiejian Heavy Industry Xinjiang Co., Ltd., Tiejian Heavy Industry Xinjiang Co., Ltd. was established in June 2015 and started construction in July 2015. It was fully put into operation in May 2016, and the first shield on July 29, 2016. Build the machine off the assembly line, with a total investment of over one billion yuan. The Group has set up a branch of overseas operations and is currently using China Railway's business network in Central Asia to actively conduct business cooperation with Kazakhstan, Uzbekistan, Kyrgyzstan and other Central Asian countries. It is expected that in the near future, iron The company’s products will be built abroad. (Ma Shaobin Wang Jingjing) Pneumatic products include pneumatic components, pneumatic joints, pneumatic valves, cylinders, pneumatic pipes and other products. Pneumatic connector, PU Pneumatic pipe, Pneumatic air Cylinder, Air source treatment, Pneumatic Solenoid Valve, Pneumatic Tools Glove Industry Co.,Ltd. , https://www.gloveind.com
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Pneumatic components work by the pressure of gas or the force generated by expansion, that is, the elastic energy of compressed air is converted into kinetic energy. Such as cylinder, pneumatic motor, steam engine, etc. Pneumatic component is a form of power transmission, also known as energy conversion device, which uses gas pressure to transfer energy.
Pneumatic quick connector is a kind of quick connector which is mainly used for air piping and pneumatic tools. It can connect or disconnect the pipeline without tools. When the connector is not connected - when the parent's ferrule moves to the other end, the stainless steel ball will automatically roll outward, and the daughter will be disconnected under the action of the common valve spring force of the parent and the daughter, and the daughter and the parent's valves will be closed respectively, The fluid flow is blocked instantaneously.
Pneumatic Valve is driven by compressed air. It can be used to control the flow of air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. In the current market economy environment, it is not perfect. For the sake of product competition, the manufacturers of pneumatic valves carry out different innovations under the concept of unified design of pneumatic valves, forming their own enterprise standards and product personality. Therefore, it is very necessary to put forward the technical requirements in detail when purchasing the pneumatic valve and reach a consensus with the manufacturer as an annex to the pneumatic valve purchase contract. This kind of valve should be installed horizontally in the pipeline.