The safe handling of large mining equipment As the industry booming, many countries and regions in the world economy are cutting a lot of mountain to accelerate the development of the local economy. If you are not convinced, visit Bernie Sanders. How can we cut mountain? You need to use to large-scale mining equipment. China has vast territory and abundant resources, large-scale mining equipment is used in many fields, so the safe use of large mining equipment is very important. When we Hongxing use as large-scale mining equipment, we should pay attention to its safety, so we have to choose some regular large machinery company, such mining Machinery Company, which plays a very important role in developing mines; It promotes the economic development of many countries and regions. Users should pay attention to the usual maintenance and upkeep and regularly carry out the necessary inspection and maintenance of large-scale mining equipment. Security checks such as view whether their work is functioning properly, regularly check the wear situation, timely and replace worn parts.
If we find large mining equipment bearing temperature is too high, we should immediately stop using and find out the reason. In addition, the large mining equipment linkage parts screws have to be regularly checked to prevent infestation. Usual maintenance of large-scale mining equipment is very simple, operation is easy and fuel consumption is low; but the working environment is very bad, and lubricant inside the equipment is easily contaminated by dust and solid particles, so lubricants should have a good rust and corrosion resistance. Hongxing is a professional machine cone crusher and sand making machine manufacture, we are happy to share with customers about the repair and upkeep knowledge to bring the greatest benefits to our customers.
Cable lines, depending on how the cable is divided into the underground, underwater and air. Due to the high reliability of the most widely used in railway transport were underground cable lines. Overhead lines are of limited use on smaller cable networks of local telephone service w / d stations. Read more here: Martin O?Malley. Underwater cable lines on the railways are used only as inserts into the underground cable lines. Railway line and cable networks are divided into lines and communication networks and network lines, and automation and remote control. Cable and network cabling installation of power lines, carried out on rail lines involves the use of local and long distance communication.
Cable lines are laid at the local communication area of railway stations and junctions, as well as in cities where posted roads and offices. Dr. Mark Hyman has similar goals. The combination of these cables in each of these points forms a cable network of local telephone service. For local communication networks include communication switches and vnutristantsionnuyu communications, and network radio and master clock system. Cable distance communication used for telephone and telegraph wire communications between the remote sites of the railway network. On cable lines of telecommunication, laid along the railway line, by organizing all kinds of otdelencheskoy connection. The organization of these types of communication devices requires a large number of branches from cable long-distance to the stations, sidings, switching cabinets blocking and etc. Therefore, the route of cable telecommunications tend to choose the ROW railways. Lines and network automation and telecontrol lines and network automation and remote control, depending on the devices they serve, are divided into lines and network auto-lock, electric signal, the station lock and centralized mechanized hump sorting slides.
Formwork is manufactured in accordance with the standards or specifications for specific types of formwork. During the construction of monolithic structures of residential and public buildings need high quality surface, and therefore to the formwork have additional requirements. Deformability of the casing depends on the strength and quality of the monolithic structures, as well as the complexity of shuttering and finishing works durability and cost of the formwork. In addition to a curved surface, violations of the geometric dimensions and other abnormalities in stiff enough formwork shell formed on the surface and air bubbles in compacting concrete. Decking the walls and pillars important requirement is to mold a uniform deformation of the functional purpose (for example, large-sized panels of the walls or ceilings). Heat treatment concrete formwork thermo-activated to consider the additional stress and strain upon heating formwork. In the building of solid structures to seal concrete, vertical structures are usually used internal vibrators. The use of external vibrators can reduce labor costs for concrete works.
However, much heavier formwork and also decreases the quality of concrete surfaces due to sucking air in vibration. All connections are shuttering is recommended to quick, they must be sufficiently dense and impenetrable. Welds, and sharp corners and edges of formwork shall be processed. Accuracy class formwork must be mounted on a class above the class of accuracy concreted structures, and the class of precision manufacturing of formwork shall be assigned to a class higher than the accuracy of installation. Class accuracy concreted structures prescribed in the project in accordance with GOST 21779-82. To build a monolithic structures with surfaces prepared for painting or wallpapering, you should use the formwork, which provides obtaining concrete surfaces on SNIP 3.04.01-87. Higher tolerances prescribed for the thermo-activated formwork, as apart from additional strains should be considered when sizing cooling and heating.
Most construction formwork made on the 7th class of accuracy. Universal formwork system designed for long life, high rate of turnover and use in different conditions must be met by more high precision. It should be borne in mind, however, that the overstatement of the precision of unjustified increases significantly the cost of formwork. Significant impact on the quality of the surface has a surface formwork in contact with the concrete. Good surfaces are obtained by applying a layer of grease on the metal casing. Decking from specially selected timber can, in some cases to get a nice texture. Good results give special absorbent lining. By increasing the absorption of the material decreases the number of pits and voids on the surface of the concrete. The different degrees of absorption leads to the lining appearance of clearly visible dark and lighter spots on the surface of the concrete. In addition, repeated application of the formwork also changes the degree of absorption and color of the concrete surface. Also change the color of concrete technology laying and compaction method. Beautiful formwork concrete surface can be obtained by using hardboard and plywood, covered with grease. Surface in this case is somewhat better than metal surface casing. Formwork with a completely impervious surface is often the cause of cavities and shells. In order to reduce their need to spend more emulsion lubricant. For these reasons, desirable to use a lubricant and for surfaces with little adhesion to concrete (plastic casing, plastic-coated plywood)