Q:Mechanical bearings, all types? Roughly

Spherical roller bearings have two raceways in the inner and outer ring raceways between spherical assembly, a drum shaped roller bearings. The center of curvature of the raceway of the outer race is consistent with the center of the bearing, so it has the same self-aligning function as the self-aligning ball bearing. When the axle and shell are bent, the axial load in two directions can be automatically adjusted. Radial load capacity, suitable for heavy load and impact load. Inner diameter is tapered bore bearings can be installed directly. Or the use of tight sets, the demolition cylinder installed on the cylindrical shaft. The cage uses a steel plate holder, a polyamide forming cage and a copper alloy car holder.

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

2. Static equipment: reaction equipment (code R). Such as reactor, reaction kettle, decomposition pot, polymerizer, autoclave, converter, digester, steam ball, sulfonation pot, gas producer and so on. Heat exchange equipment (code H). Such as tubular waste heat boiler, heat exchanger, evaporator, condenser, cooler, heater, sterilization pot, water jacket, etc. for dyeing dryer, steamer, cooker, gas preheating. Separation equipment (code S)

Q:How do the welding parts in the welding drawings of the machine parts indicate the technical requirements of the drawings?

The whole circle of the triangle is welded as an angle weld, and the other is the outer circle with the same diameter as the two, so the butt joint is better to open the groove. Welding, for V type welding seam, and, technical requirements are generally, welding firm, no defects, welding smooth grinding, cleaning welding slag splash

Q:Where are the mechanical pressurization air supply facilities set up?

The purpose of setting up a mechanical pressurization air supply smoke prevention system is to provide evacuation routes and shelters without smoke interference in the event of a fire in the building. Therefore, in the closed door, pressing position, and the fire floor must maintain a certain pressure difference, the position of the air pressure value is a relative positive pressure); at the same time, in the open part of the pressure when the door can have enough air velocity in the opening section, to effectively prevent the intrusion of flue gas, the safety of personnel ensure evacuation and refuge.

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:Building materials, equipment, components and fittings products must have "three certificates" is what cards?

Product quality certification, also known as product certification, internationally known as qualified certification. According to the 1991 implementation of the "people's Republic of China Quality Certification Management Regulations", the product quality certification is based on the product standard and relevant technical requirements, the certification institution confirmed by the certification and certification marks to prove that a particular product is in conformity with the relevant standards and technical requirements of the corresponding activities.

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

Appendix B Construction Engineering Division (sub branch) engineering, sub project division, B.0.1 Construction Engineering Division (sub branch), engineering, sub projects can be divided into table B.0.1. Table B.0.1 division number of construction works, sub works and sub projects

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:The building electrical iron pipe and the pipe line fixing member connected to what is called, what is called the iron pipe and the 86 fixed part of tin

This book is based on the characteristics of construction electrician, in accordance with the scientific, practical and applicable principles. The content is simple, the language is easy to understand, the form is illustrated, and the system, authority, operability is strong.

Q:What are the mechanical drawing software?

The plane is mainly CAD and CAXA, there are some non mainstream mechanical engineer what, mainly engaged in your spare parts of machinery industry, roughness, form and position tolerance requirements, recommendations for CAXA, which symbols are readily available, there are standard parts library, mechanical symbols library etc..