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: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:Where are the hanging baskets for the building?

It is strictly prohibited to use hanging baskets as vertical transport facilities for personnel and materials; no staff member is allowed to climb from a basket to a B basket

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

Three is a business license, certificate of product quality, product quality inspection certificate. Business license is the legal provisions of some industries must be licensed, and handled by the competent department of the operating permit, such as tobacco monopoly license, drug business license, business license and other dangerous chemicals.

Q: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.

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

Pipe or direct protection, construction of special operation personnel of construction electrician training materials, focus on the "construction of special operations personnel management regulations", "construction of special operations personnel safety technology assessment program (Trial)", "construction of special operations personnel safety operation skills examination standard (Trial)" and other relevant provisions safety, technical knowledge and skills to master for construction electricians were explained, the book has 10 chapters, including: basic knowledge, common low-voltage electrical appliances and Motor City, power supply and grounding earthing protection system.

Q:What are the main functions of construction equipment monitoring system?

The total of the console cameras and auxiliary equipment (such as camera, PTZ, shield) control generally adopts the bus mode, a control signal to the camera near the terminal in the terminal box decoding, decoding box will total console from the control signal encoding solution, a control action command signal, a variety of actions to go camera control and auxiliary equipment (such as lens zoom, pan rotation etc.). In the case of some cameras that are close to the control center, in order to save money, the command signal, which is the "on or off" signal, can also be sent directly by the console. In short, according to the composition of the system and requirements, can be considered in order to complete the overall console design requirements or order requirements.

Q:What functions should be achieved in mechanical structure design?

The function of the mechanical structure is mainly realized by the geometry of the machine parts and the relative position between the parts. The geometry of a part is made up of its surface, and a part usually has a number of surfaces, some of which are in direct contact with the surface of other parts, and this part of the surface is referred to as the functional surface. The connecting part between the functional surfaces is called the join surface

Q: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.