Exercise 2. Match the pictures with the words in the box.
| a) backhoe b) front shovel c) clamshell d) dragline e) bucket wheel excavator f) ladder-type trenching machine |
1 
2 
3 
4 
5 
6 
Exercise 3. Complete the sentences.
1) Excavators have a shared general purpose – ……… .
2) A front attachment of a shovel consists of ……… .
3) A backhoe digs by forcing the bucket into the ground and pulling it ……… the machine.
4) A ……… is a hydraulic device that controls the back-and-forth movement of the bucket.
5) Buckets, the most popular excavator ………, dig and carry dirt, rock, or building materials on construction projects.
6) An operator of a backhoe ……… the movements of the bucket and boom with levers.
Exercise 4. In the picture you can see Marion 6360 which was the world’s largest power shovel built by the Marion Power Shovel company.
| A | 1) Bucket Capacity 2) Overall Weight 3) Total Height 4) Crawler Height 5) Crawler Unit Length 6) Started Service 7) Scrapped 8) Power 9) Build time |  |
B a) 16 feet, b) 12,700 tons, c) 15,000 hp, d) 1992, e) 210 feet, f) 180 cubic yards, g) 45 feet, h) 1965, j) 18 months
Match A and B.
Say what its total height was in metres and what its bucket capacity was in cubic metres?
Work in pairs. Ask and answer questions about Marion 6360.
Rendering
Render the text in English.
Экскаватор предназначен для разработки (копания) горных пород (грунта), а также для погрузки их в транспортные средства или укладки в отвал. Экскаваторы выполняют около 35% объёмов земляных работ в строительстве и свыше 80% объёмов на открытых горных работах.
Различают две основные группы: одноковшовые (цикличного действия – cyclical) и многоковшовые экскаваторы (непрерывного действия). Рабочий цикл одноковшовых экскаваторов включает операции резания (копания) грунта (с одновременным заполнением ковша), перемещения заполненного ковша к месту разгрузки, выгрузки грунта из ковша и возвращения ковша.
Listening
Video 2
Exercise 1. Watch the video and answer the questions.
1) What is this machine used for?
2) How many crawlers does the machine have?
3) How long is a boom?
4) How much material does this machine remove each day?
5) How many people with shovels would be needed to replace the machine?
Exercise 2. Work in pairs. Talk about most impressive facts concerning the bucket wheel excavator.
Video 3
Read through the questions and tell each other what you think the correct answer might be. Then watch the video and check your answers.
1 What is the Hitachi main product group of construction machines?
a) Loaders
b) Dump trucks
c) Hydraulic excavators
2 Where was the first excavator built?
a) The USA
b) Japan
c) Germany
3 When did Hitachi build its first power shovel made wholly with Japanese technology?
a) 1949
b) 1958
c) 1968
4 Where did the company establish its first branch?
a) The USA
b) The Netherlands
c) France
Speaking
Talk about types of excavating machines and their differences.
Word list
| 1. | boom | стрела |
| 2. | bucket ['bʌkɪt] | ковш |
| 3. | bucket wheel excavator | роторный экскаватор |
| 4. | cable ['keɪbl] | канат, трос |
| 5. | capacity [kə'pæsətɪ] | вместимость, объем (ковша экскаватора) |
| 6. | chain | цепь |
| 7. | clamshell | грейфер |
| 8. | digging | копание, выемка грунта |
| 9. | dipper stick | рукоять |
| 10. | handle | рукоять |
| 11. | height [haɪt] | высота |
| 12. | ladder-type trenching machine | многоковшовый цепной экскаватор |
| 13. | lattice ['lætɪs] | решетка |
| 14. | length | длина |
| 15. | mining ['maɪnɪŋ] | 1) разработка месторождения; 2) добыча, выемка |
| 16. | move [muːv] moving | перемещать перемещение |
| 17. | open pit mining | разработка открытым способом |
| 18. | pipe | труба |
| 19. | pivot ['pɪvət] | шарнир |
| 20. | removing | удаление |
| 21. | revolving deck / turntable ['tɜːnˌteɪbl] | поворотная платформа |
| 22. | scoop scooping | 1) вычерпывать, выкапывать; 2) ковш черпание |
| 23. | stick cylinder ['sɪlɪndə] | гидроцилиндр рукояти |
| 24. | teeth | зубья |
| 25. | trench | траншея |
| 26. | versatile ['vɜːsətaɪl] | универсальный |
| 27. | weight [weɪt] | вес |
Reading