"mechanism" newsreels and historical clips

... engine to the rotating device is carried out by a transfer mechanism.

Wrench.

Planetary gear mechanisms.

A sample of the simplest gear mechanism.

It consists of two gears with fixed axles.

A sample of a planetary mechanism, this is a mechanism with movable axes.

A gear wheel with a movable geometric axis ...

... planetary mechanism.

Satellites rotate around their axes and at the same time move with the driver.

A sample of such a planetary mechanism.

The fixed axis of the driver is called the main axis.

Gears whose axes coincide with the main axis are called central.

The simplest planetary mechanism has one leading ...

... leading link.

The leading link can be a driver or a satellite.

Planetary mechanisms with two or more leading links are called differential mechanisms or differentials.

Classification of planetary transmissions by V.N. Kudryavtsev.

Samples of planetary transmissions with classification 2k-h.

They can be ...

... planetary transmissions, the satellite is the leading link.

An example of a misaligned planetary gear is the rotation mechanism of the excavator platform.

Kinematic analysis of planetary mechanisms is carried out using the method of motion reversal.

Determination of the gear ratio from one link to another.

Transfer ...

... velocities is the drive of a spinning-belt machine.

Kinematic transmission capabilities with a negative gear ratio.

The gear ratio can be increased if two mechanisms are connected in series.

In planetary gears with two pairs of wheels with external teeth, the gear ratio is positive.

... alignment, proximity and assembly must be met.

The alignment condition can be expressed in terms of the number of teeth of the wheels of the planetary mechanism.

Reference book planetary transmissions.

Table "Alignment conditions of planetary gears".

Neighborhood condition.

If the number of satellite teeth ...

... transmission with conical wheels is used as a differential.

The 3k transmission is the most contact, allows you to get large gear ratios.

The planetary mechanism in the loom.

A progressive solution is the embedding of planetary gears in the actuators of machines.

Various examples of the use of planetary gears ...

... sewing machine.

The concept of a mechanism as an integral part of a machine.

Loader operation.

Samples of the lever mechanism.

Layout of the crank-slider mechanism.

Such a mechanism in the engine converts translational motion into rotational motion.

A mock-up of a mechanism that turns rotational motion into ...

... of the use of gears.

A mock-up of a mechanism in which the high speed of a gear wheel needs to be converted into the low speed of another gear wheel.

Speed conversion using belt mechanisms, with a flat belt, wedge and toothed.

Sample ratchet mechanism.

This mechanism is used to convert the movement of ...

... the output.

Samples of mechanisms.

The mechanism of the Maltese cross.

Hydraulic mechanisms, such as the excavator boom, pneumatic mechanisms, such as a jackhammer, have been widely used.

Robot.

The concept of a mechanism link.

Samples of such links.

Links of the lever mechanism.

Alternating frames with ...

... different links of the lever mechanism.

A fixed link is called a rack.

Alternation of frames with links of gear mechanisms.

Cylindrical gears.

Samples of various types of gears.

A sample of a mechanism in which toothed and belt links are combined.

A sample of the worm mechanism.

Layout of non-circular gears ...

... gears.

The layout of the cam mechanism.

The links of the screw mechanisms are a nut and a screw.

In all these mechanisms, the links are solid bodies.

Flexible link - belt, cables.

The flexible link in the chain mechanism is a bushing roller chain.

A sample of such a mechanism on a bicycle.

In hydraulic ...

... hydraulic and pneumatic mechanisms, one of the links is liquid or gas.

Layout of the piston operation.

The concept of input and output links.

Layouts of mechanisms with multiple input links.

One of the input links of such a mechanism can be used to regulate movement.

A cartoon explaining the movement of an object ...

MLT - mechanisms of reactions.

Electrophilic addition (MLT) (KP) Ethylene (MLT).

The starry sky.

Image of the structure of organic compounds.

Devices for chromatography and spectral analysis.

Computer equipment.

The printing device.

The scheme of the organic reaction is electrophilic addition.

Animated ...

... reactions.

A typical reaction of electrophilic addition is hydrobromination.

Markovnikov's rule for hydrobromination.

According to the electrophilic mechanism, hydration of alkenes occurs.

Water as a nutriophilic reagent by itself does not attach to the double bond.

Experience in water absorption of butene ...

...

Halogenation of alkynes by electrophilic mechanism.

Bromination as a stereoselective process.

The anti-connection process.

Experience in the identification of alkynes and alkenes by bromine.

Polymerization of alkenes can occur by an electrophilic mechanism.

The result is a polymer molecule with qualitatively ...

... beta isomer.

The study of reactions involving organic compounds.

The understanding of the mechanisms of reactions of organic compounds makes it possible to model complex biochemical processes, predict the mechanisms of action of enzymes, and study at the molecular level normal and pathological processes ...

... processes occurring in living organisms.

Alternating frames with examinations of patients.

Samples of medicines.

Cognition of the mechanisms of vital activity is the processes occurring at the junction of biology, medicine, chemistry.

... mining.

Various mechanisms work.

Where there is friction, wear is usually present.

It disables up to 90% of difficult-to-manufacture parts, friction units.

An employee checks the wheel pairs of the wagons for malfunctions.

Inspection of the car in the repair shop.

The main mechanisms of wear depend on ...

... friction without lubricants or when there is a shortage of it.

Samples of worn parts.

Adhesive wear formula.

Fatigue wear occurs in well-lubricated mechanisms whose surfaces operate under conditions of kinematic rolling, sliding or rolling with sliding.

A sample of such wear.

Fatigue wear is typical for ...

... chemicals.

With small vibrational movements of surfaces in conditions of corrosive environment, wear occurs during fretting corrosion.

Samples of mechanisms subject to such corrosion.

Defects in such corrosion are rubs, breakouts, sinks.

Samples of deformed parts.

One of the most dangerous types of surface ...

... under a microscope.

This process is often characterized by catastrophically rapid wear of conjugated pairs and can lead to a complete failure of the mechanism.

Alternating frames with scientists investigating friction processes.

Types of buildings of the Chistopol watch factory.

General view of the workshop.

Assembly of the mechanism of the Vostok-2809 watch.

Factory worker.

Operation of the Vostok-2809 mechanism.

Watch "Vostok-2209" pendant.

Cabin and car watches of the Chistopol factory.

The Vostok desk clock.

Car clock "Vostok" ...

... at work.

Watch "Vostok-2416", 29 stones.

Manufacture of parts of clock mechanisms on machine tools.

Manufacture of dials.

Manufacture of clockwork parts.

Factory worker.

Manufacture of dials.

Assembly and control of watch mechanisms on the conveyor.

Work in the workshops of the plant.

Watch "Vostok-2416" ...

... Diagnostic devices that control quality.

Assembly shop.

"Engine device. 1 section of the film course"KAMAZ".

Model 740 diesel engine.

"Crank mechanism".

The engine cylinders are positioned at a 90-degree angle.

The worker sets the connecting rods on the connecting rod neck of the crankshaft.

The ...

... gasket between the cylinder block and the head.

"Gas distribution mechanism".

Cartoon diagram of the combustion chamber purge.

Valve mechanism.

Gas distribution mechanism.

Panorama of the main parts of the gas distribution mechanism.

"Lubrication system".

Cartoon diagram of the lubrication system ...