Q:What is equipment manufacturing and machinery manufacturing? What's the difference between them?

The equipment manufacturing industry covers Yuan Jian practice (classification of thinking. The development of equipment manufacturing industry of electromechanical product development and innovation, 2001.5 (total seventieth)) that can mainly based on product knowledge content and technical difficulty, necessity supplemented by direct state control, equipment will be divided into five types, development principles and countermeasures accordingly considering the difference of equipment manufacturing industry.

Q:What are the construction materials, components, fittings and equipment in construction?

Board: cast-in-place slab, prefabricated slab, prefabricated hollow slab, reinforced concrete slab, wood board. The wall, brick wall, concrete wall, roof parapet, wall light. Door: solid wood door, plywood door, steel door. Window: window, wooden window, Aluminum Alloy window, plastic steel window. The building is in addition to other parts of the building and construction of houses built some auxiliary components, such as scaffolding, construction with pipe thread adjuster, building rod, triangle construction support, reinforced joints etc..

Q:How are buildings, installations and materials divided?

Provisions on the division of equipment and materials for engineering construction? [answer] the division of equipment and materials in engineering construction is directly related to the reasonable division of investment structure, budget preparation and calculation of construction output value. In order to reasonably determine the project cost, strengthen the investment in the process of construction and management, the equipment and materials in the engineering construction is unclear, especially the universal controversial common problems and put forward the principle of division of fifteen copies of "national unified installation project budget quota" of the equipment and materials are divided, the provinces, autonomous regions and municipalities directly under the central government and the relevant departments of the State Council, the Department should be combined with the local situation, formulate rules for its implementation, and report to the Ministry of construction for the record.

Q:What are the mixing arms of the concrete mixer?

Mixing arm concrete mixer is a component of the mixing arm itself and divided into lateral mixing arm (positive and negative points), stirring arm (also have positive and negative points), stirring arm below is the bearing seat connected, connected with 4 sets of high strength bolts with stirring arm. The top is equipped with wear-resistant mixing blades, connecting with mixing blades, high-strength bolts 2 sets. In addition, some manufacturers have designed mixing side bonded shaft swivel, is installed in the interval between the stirring arm fixed and rotated in two ways.

Q:What are the details of construction machinery parts in sand casting?

(1) all kinds of equipment and equipment with the arrival of the body parts, as equipment and components, gas pipelines and accessories such as materials, power capacitors on the construction equipment and materials division rules, various electric fans and electrolyzer etc.. 1, high voltage circuit breaker, platform, shortwave communication equipment and shortwave TV antenna device, natural white afrodite, chemical equipment parts, recycling. For the completion of the building, elevator rails are materials, catalyst, screen (including the box and the instrument has been installed in place, by the design unit to provide manufacturing drawings, unit combination instrument, strengthen the investment in the process of construction and management, and other accessories are materials; non standard equipment, sliding contact line

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

This depends on the erection of the height of the general 3 steps and within 5-6 yuan a meter, assuming the erection of 4.5 meters high, 22.5-27 yuan a square. This is calculated in accordance with single-layer, the higher the more expensive, 9 meters in 65 yuan or so square. In accordance with the establishment of meters, in accordance with the erection of the volume of the calculation.

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

Hefei construction workers training _ eliminate dangerous source: eliminate the risk source of the system can fundamentally prevent accidents. But an important point of system safety is that it is impossible to completely eliminate all sources of danger and that people can only selectively eliminate several specific sources of danger. Generally speaking, when the risk of a dangerous source is higher, we should first consider whether we can take measures to eliminate it. A dangerous source can be completely eliminated by selecting the proper production process, technology, equipment, reasonable design, structural form or suitable raw material. For example: instead of the power system with pneumatic or hydraulic system, to prevent the occurrence of electrical accidents; instead of compressed air system for hydraulic system, to avoid the pressure vessel, pipeline rupture caused by shock wave; with incombustible materials instead of combustible materials, to prevent the occurrence of fire. It should be noted that sometimes measures are taken to eliminate certain sources of danger, but new sources of danger may be brought about. For example, an electric pneumatic system instead of a power system can prevent electrical accidents, but a physical explosion accident may occur in the compressed air system.

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: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.

Q:Definition of large mechanical equipment?

Usually, crane hoisting (make things up and down movement), operation mechanism (the mobile crane), luffing mechanism and slewing mechanism (the horizontal movement of goods), plus metal mechanism, driving device, control device and the necessary auxiliary assembly.