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What measures can effectively reduce the construction accident rate?
- Hefei construction workers training _ security technology to prevent accidents: prevent the basic starting point of safety accidents is to take measures to restrict energy and dangerous material, to prevent the accidental release. Common safety techniques for preventing accidents are eliminating dangerous sources, limiting energy or dangerous substances, isolating and so on.s
What are the mixing arms of the concrete mixer?
- Concrete mixer parts often due to operational mistakes and equipment damage, we should know that the correct use of Yantai mixer parts, mixing arm not only can complete the "workload" on time, but also to extend the service lifes
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.s
What functions should be achieved in mechanical structure design?
- Mechanical structure design plays an important role in mechanical design. This chapter mainly discusses the characteristics, steps and mode of thinking of mechanical structure design. The working principle and design requirements of the machine assembly is a major factor in determining the structure and shape of the parts, followed by the selection of materials, manufacturing process requirements, which has the advantages of good manufacturability (processing and assembly). In addition, the perfection of the structure and shape of the parts has a great influence on the strength and stiffness.s
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.s
Where does Heilongjiang do the most construction machinery?
- Construction machinery is an important component of equipment industry. To sum up, all mechanical equipment necessary for comprehensive mechanical construction projects, such as earthwork construction, pavement construction and maintenance, mobile lifting, loading and unloading operation, and various construction projects, are called construction machinerys
What are the sectors of machine building and parts processing?
- 1., industry generally refers to its production of similar products, or with the same process, or to provide similar labor services division of economic activities, categories.s
What kind of electrical equipment do you have? What are the main components of each device?
- 1 、 electrical equipment part of electrical equipment mainly refers to: substation and distribution of power equipment and local scattered power, lighting distribution box. Such as: dry type power transformer, high voltage and low voltage power distribution cabinet, control the use of DC cabinet (with battery), standby uninterruptible power supply cabinet, lighting distribution box, power distribution box (cabinet), power factor capacitor compensation cabinet and standby diesel generator etc.. The utility model is characterized in that the rated voltage is mostly 10KV380V/220V by the combination of independent functional electric components, and the voltage is only 24V or 12V in the control system only.s
Maintenance precautions of the best air purifiers for pets
- There is no doubt that best air purifiers for pets are widely in many places, such as construction places, household application places and so on. Maintenance process of best air p...
The best small lawn mower is my favorite
- The type of lawn mowing is varied.But the best small lawn mower is my favorite.Why do I like it?That's because the best small lawn mower can meet my requirements. Let us look a...
What is the problem about the lawn mower
- 1，Why use the throttle when the lawn mower is working？ When the lawn cut grass, it relies on the high-speed rotating blade to cut the grass,if the line speed is not enough, the...
There is one of the best reel lawn mower
- If you want to buy the best reel lawn mower，you must understand all aspects of the lawn. If you want to buy the best reel lawn mower,you must understand the structure of lawn mow...
To introduce one of the best petrol lawn mower
- Features of the best petrol lawn mower：Lawn machine is a kind of portable garden tool for single use. It has a small gasoline engine as power. It drives the blade to rotate throu...