Q:Mechanical bearings, all types? Roughly

The separable bearing is composed of a raceway and a needle roller and cage assembly that can be arbitrarily assembled with a punched thin raceway (W) or a machined thick raceway (WS). A non separable bearing is an integral bearing consisting of a precision machined raceway and a needle and cage assembly. This type of bearing can bear one-way axial load. With small space, it is beneficial to the compact design of machinery. Most of them only use needle roller and cage assembly, and the installation surface of shaft and shell is used as raceway surface.

Q:Construction Engineering, moving equipment and stationary equipment, respectively

Moving equipment refers to the rotating equipment driven by a drive (i.e., equipment with energy consumption), such as pumps, compressors, fans, etc. the energy can be electric power, pneumatic power, steam power and so on. Moving equipment refers to the main components of the movement of machinery, such as various filters, crushers, centrifuges, rotary kiln, mixer, rotary dryer and fluid conveying machinery

Q:China mechanical net

There are mechanical product development and design, mechanical equipment transformation, mechanical equipment maintenance, data inquiries, standard inquiries, mechanical professional translation, mechanical CAD and other mechanical and technical services.

Q:What is a door rack for a construction site? How high is it generally?

Construction machinery network learned that the door scaffolding in our country production and use of time is not long, the scaffolding developed by the various research institutions, self-contained, and not common, varieties, specifications and diverse. Some factories copy foreign products and use the imperial size.

Q:What are the principles, performances and uses of the commonly used construction machinery equipment?

1.: concrete pump principle: concrete pump driven by motor pump system, the conveying capacity of constant power control of hydraulic system of concrete pump automatic control, manual control can also be used to select the concrete delivery volume. Performance: 1. using the hydraulic system of double pump double open circuit, the main pump valve swing circuit and S circuit are separate for fault diagnosis and removal; 2. pumping hydraulic circuit adopts the main valve pilot pressure control; 3. hydraulic system has safe relief protection, while the main pumping system overpressure, oil pump automatic pressure cutting off; 4. switching circuit with constant voltage supply with the energy storage device, so as to guarantee reliable swayingforce large and have the advantages of energy saving effect; 5. pumps and valves are used continuously, the world famous brand is more reasonable and more reliable and easily realized commodity concrete transport quantity adjustment; 6. hydraulic pipeline with cone seal pipe joint sealing material; 7. pumping circuit adopts a valve block mode of high and low voltage switch, convenient, no leakage; 8. with oil and oil filter technology, foreign body into the hydraulic system. Further improve the hydraulic system reliability and component life; 9. hydraulic hose hose. Use: widely used in commercial concrete demand for large, high grade and strict quality requirements, long conveying distance of high-rise buildings, municipal construction, electric power, energy, transportation and other civil and industrial buildings, especially the construction of the narrow space more show its true colour of a hero.

Q:Where does Heilongjiang do the most construction machinery?

In the world, the industry address basic similar, of which the United States and Britain called the construction machinery and equipment, construction machinery and equipment for Germany, Russia called for the construction and road construction machinery, construction machinery called japan. In China, some products are also known as construction machinery, and in the mechanical system, according to the State Council to set up the industry approval, collectively referred to as construction machinery, has continued to the present

Q:What measures can effectively reduce the construction accident rate?

Hefei construction workers training _ fail safe design: in the part of the system, equipment malfunction or damage, can also ensure the safety of safety and technical measures known as fault - Safety Design in a certain period of time (fail-safe). Generally speaking, through careful technical design, the system and equipment are in a low energy state when the fault occurs, thus preventing the unexpected release of energy. For example, a fuse in an electrical system is a typical fault - Safety Design; when the system is overloaded, the fuse is fused and the circuit is disconnected to ensure safety. Although the fail safe design is an effective measure of safe technology, but considering the fail safe design itself may not work due to failure, so the choice of safety technical measures should not give priority to the use of.

Q:What are the sub projects of a construction project?

Lime soil, sand and gravel foundation, geosynthetics foundation, fly ash foundation, dynamic compaction, foundation grouting, preloading foundation, vibroflotation foundation, jet grouting foundation, cement mixing pile foundation, soil and lime soil compaction pile foundation, cement fly ash gravel pile, cement soil pile foundation. Based on sand pile foundation

Q:Changsha Sanlian Building Machinery Fittings Factory

In addition, you can check the input path, or the name of the unit on the map. It will remind you that there is no unit in Changsha and no way. In addition, we received a fax, saying that you want to order what goods, may wish to go to the other party's local industrial and commercial Red Shield network to check whether there is this unit

Q:What are the sectors of machine building and parts processing?

3., machinery manufacturing is also a kind of industry, many industries have parts manufacturing, processing links. Therefore, the processing of parts does not belong to a particular industry.