XV. Express your doubt using expression: “Is it really so?” (Это на самом деле так?) Ask a general question.

Example: Elevating grades are used for digging irrigation ditches.

Is it really so? Are they used for irrigation ditches?

1.Elevating graders can erect fills up to 1.2 –1.5 meters.

2. Elevating graders are classified according to the mode of locomotion.

3. There are trailer, semi-trailer, pendant and self-powered graders.

4. The share arm can be raised and lowered together with the disk knife.

5. In an elevating graders the two functions of cutting and transporting the load are quite separate.

XVI. Translate the following sentences into English.

1. Известно, что грейдеры-элеваторы предназначаются для послойной разработки грунта.

2. Известно, что грейдеры-элеваторы применяют для копания оросительных каналов.

3. Мы знаем, что работа выполняется ножом и ленточным транспортером.

4. По устройству рабочего органа грейдеры бывают с дисковым ножом и системой плоских ножей.

5. В зависимости от способа передвижения бывают прицепные, полуприцепные, навесные и самоходные скреперы.

6. При помощи механизмов управления можно отдельно поднять верхнюю и нижнюю часть транспортера.

XVII. Read and retell the following text using the introductory phrases.

Graders

A trailer elevating grader has a poor manoeuvrability and it takes much time to turn the machine around at the end of each pass. Besides (кроме того), there must be another operator for maintaining the engine and controlling the knife and the conveyor.

A semi-trailer elevating grader is used together with a 100-horse power tractor. It also has the same disadvantages (недостатки) as a trailer elevating grader. But it is lighter and has a different construction. It does not have a front axle but rests on a tractor. The disk knife, the share arm and the conveyor are raised and lowered with the aid of hydraulic cylinders.

XVIII. Learn the following dialogue.

Situation: Your friend and you discuss the theme “Elevating graders” before the examination in English.

A. Let`s review the theme “Elevating Graders”.

B. I don`t mind. Let`s begin with its use.

A. As far as I know an elevating grader is used for building fills and for digging irrigation ditches.

B. Right you are. And it should be noted that in an elevating grader the two functions of cutting and transporting the load are quite separate.

A. And what is the work done by, I wonder?

B. I think, it is done by a knife and a belt conveyor. And do you know on how many wheels it travels?

A. Yes, it travels on six wheels.

B. Thank you. I think, that`s enough for today. It`s high time to have a rest.

A. Oh, that`s a good idea!

УРОК 5 LESSON FIVE

Фонетика: Повторение чтения буквосочетаний «URE», «ERI», «EAR»,

«OUS» и буквы «U» в закрытом слоге.

Грамматика: Способы перевода глагола «to be». The Complex Subject,

the Complex Object and the Infinitive. (Повторение).

Тема: Транспортеры. Conveyors.

E X E R C I S E S

I. Read the following words.

[jHq] -– endure, secure, pure, durable, during.

[iq] - serious, material, gear, rear, near.

[qs] -– viscous, serious, dangerous, various, simultaneous.

[A] - upper, rubber, number, drum, run, bucket, dump, rubberized.

II. Learn the following words:

1.Bucket conveyor [`bAkit kqn`veiq] - ковшовый элеватор

2. Screw conveyor -[`skrH kqn`veiq] – винтовой транспортер

3. Ply [plai] n – слой

4. Rubberized cotton [`rAbqrazd kOtn] – прорезиненная ткань

5. Lining [`lainiN] n – прокладка

6. Heat-resistant [`hJt ri`zistqnt] – теплостойкий

7. In conformity with [[in kqn`fLmiti wiD] – в соответствии с …

8. Endure [in`djuq] v – выдерживать

9. High strength [`hai `streNT] a – высокопрочный

10. Head and return drive – приводная и натяжная станция

11. Strand [strxnd] n – ветвь (транспортера)

12. Secure [sq`kjuq] v – закреплять, прикреплять

13. Sag [sxg] v – провисать, прогибаться

14. Chute [SHt] n – лоток, желоб

15. Viscous [viskqs] a – вязкий

16. Determine [di`tWmin] v – определять

17. Enough [I`nAf] adv – достаточно

18. Centrifugal force [`sentrifjHgql`fLs] – центробежная сила

19. Arise [q`raiz] v – возникать

20. Fast-moving chain [`fRst mHviN `Cein] – быстро-двигающаяся цепь

21. Cement [si`ment] n – цемент

22. Concrete [`kOnkrJt] n – бетон

23. Wet clay [`wet`klei] - влажная глина

24. Idle strand ]`aidl strxnd] – холостая ветвь

III. Find the correct equivalents to the English terms.

1. Vibration conveyor a) винтовой транспортер

2. Bucket conveyors b) холостая ветвь

3. Concrete c) ленточный транспортер

4. Screw conveyor d) ковшовый элеватор

5. Idle strand e) бетон

6. Belt conveyor f) вибрационный транспортер

7. Slag g) гравий

8. Gravel h) шлак

IV. Find the English equivalents to the following Russian words:

1. Лента a) head drive

2. Слой b) return drive

3. Теплостойкий с) belt

4. Морозостойкий d) discharge chute

5. Разгрузочный лоток e) ply

6. Приводная станция f) high strength

7. Натяжная станция g) heat-resistant

8. Высокопрочный h) frost-resistant

V. Learn the information about the translation of the verb “to be”.

Помните, что глагол to be на русский язык может переводиться словами: являться; заключаться в том, чтобы; состоять в том, чтобы; бывать; это; представлять собой.

Examples:

1. The basic elements of a belt conveyor are a belt, a head and return drive, etc.

Основными частями ленточного транспортера являются лента, приводная и натяжная станция и т.д.

2. A jack is the simplest load lifting appliance.

Домкрат представляет собой простейшее грузоподъемное оборудование.

3. The aim is to provide the low pressure.

Цель заключается в том, чтобы создать низкое давление.

4. The function of the gear box is to enable the leverage to be varied.

Функция коробки передач состоит в том, чтобы дать возможность рычажной передаче изменяться.

5. Tyres are of pneumatic type.

Шины бывают пневматического типа.

VI. Translate the following sentences paying attention to the verb “to be”.

1.A hoist is a simple suspension-type small-size mechanism.

2. The stationary tower is a metal framework consisting of several sections.

3. A crane bridge is a steel structure of a beam type.

4. The function of the clutch is to enable the engine to be disconnected smoothly from the driving wheels.

5. The principal function of the gear box is to enable the leverage between the engine and the driving wheels to be varied.

6. The principal member of a belt conveyor is a belt which carries a load on its upper surface.

7. A diesel engine is an internal combustion engine in which fuel is ignited by the heat of compression.

VII. Read and translate the following text.

CONVEYORS

There are different types of conveyors: belt conveyors, bucket conveyors, screw conveyors, vibration conveyors and others.

Belt conveyors are known to be widely used in construction work. The principal member is a belt which carries a load on its upper surface. The belt consists of plies of rubberized cotton cemented together by rubber linings. It is interesting to note that ordinary rubber belts are used for temperatures from +50 to – 50 degrees. Besides, there are heat-resistant, frost-resistant and special high-strength belts. Standard belts range in width from 400 to 1,200 mm and have from 3 to 12 plies. The width of a belt is known to be selected in conformity with the amount of load it has to handle. The number of plies which determines the belt strength must be enough to endure the maximum tension in the belt where it runs onto the drive drum. Belts move at a speed of 1.5 – 5 m/ sec. The basic elements of a belt conveyor are a belt, a head and return drive, a frame and sets of rollers supporting the upper and the lower strands of the belt.

Bucket conveyors carry the material in buckets secured on a rubber belt for handling light material or chains for heavier loads. Bucket conveyors can be vertical and inclined. In inclined conveyors the chain runs over rollers fixed on the frame. There are inclined conveyors in which the idle strand sags. The buckets dump their loads into a chute as they run over the upper sprocket or the material may be discharged by the centrifugal force arising when a fast-moving chain runs round a sprocket. At the top of the conveyor there is a discharge chute and a head drive, while a return drive and a feed chute are arranged at the bottom.

Screw conveyors are employed to handle cement, gravel, slag, concrete, wet clay, and other loose and viscous materials.

VIII. Connect the following sentences according to the contents.

1. The principal member of a a) in which the idle strand sags

belt conveyor is a belt

2. The belt consists of plies of b) as they run over the upper sprocket

rubberized cotton

3. The width of a belt is selected c) which carries a load on its upper surface

according to the amount

of load d) which are secured on a rubber belt or

chains

4. Bucket conveyors carry the e) that it has to handle

material in buckets f) which are cemented together by

5. There are also inclined conveyors rubber linings

6. The buckets dump a load into a chute