1. A jack a) are used for auxiliary construction purposes
2. Hydraulic jacks b) is used for assembling machines
3. Hand-operated winches c) is used for raising a load to a small height
4. A hoist d) are used to lift heavy equipment
1. A jack is the simplest load lifting appliance for
a) … raising heavy equipment
b) … assembling machines
c) … raising a load to a small height
2. Rack-and-pinion jacks can handle
… from 3 to 500 tons
… from 0.5 to 10 tons
… from 1 to 20 tons
3. A hoist is a simple suspension-type small-size mechanism used for
… lifting 0.25 to 10 tons
… raising structures weighing thousands of tons
… assembling machines
4. To raise structures weighing thousands of tons
… two jacks are jointed together
… several jacks are used
… one jack is used
5.The winch is driven by an electric motor through
a) gear box
b) a V-belt drive
c) a V-belt drive and a pair of gear wheels
Fig. 1. Jacks: a) rack-and-pinion, b) hydraulic
Fig.2.
Fig. 3.
Liquid, some, powered, lift, basically, used, work, lifting.
1. A jack is used for raising a load to a small height.
2. A rack-and pinion jack is more dangerous in operation than a screw jack.
3. Hydraulic jacks are employed to erect heavy equipment.
4. Piston rises when liquid is forced into the cylinder.
5. Several jacks are jointed together to raise heavy structures.
6. The winch is driven by an electric motor through a V-belt drive and a pair of gear wheels.
7. Hoists are mainly used for assembling machines.
A B
1.The support of a rack-and-pinion a) while hand-operated hoists can
jack lift from 0.25 to 10 tons
2. Rack-and-pinion jacks have no b) can be placed under a lower
brakes lying load
3. Hand-operated winches used for c) so they are more dangerous in
Auxiliary construction purposes operation
4. Electric hoists handle from 0.125 d) develop a pull of up to 10 tons
to 10 tons
Models: 1. What types of jacks are there?
winches
hoists
cranes
tractors
hydraulic jacks
winches
hand-operated winches
electric friction-type winches
hoists
XIV. Answer the following questions.
1. What does the text deal with ?
2. What is a jack ?
3. What kinds of jacks are there ?
4. What jacks have a higher efficiency ?
5. What jacks are more dangerous in operation ?
6. Where are winches used ?
7. What types of winches are there ?
8. What is a winch driven by ?
9. What is a hoist ?
10. What types of hoists are there ?
11. What are hoists used for ?
I am going to speak about …; it is interesting to note that …;it should be said that …; in conclusion I`d like to say that … .
Power winches
Different types of winches are used in construction. They are economical because only one man is required for their operation. The larger models can be used to lift heavy loads. The smaller models are very light. They are used to lift small structures. The power winch consists of a prime mover, a drive, and a rope drum. The prime mover may be petrol, diesel, electric, etc. The construction and operation of the power winch is very simple.
1. Cамым простым подъемным приспособлением является домкрат.
2. Существует два вида домкратов.
3. Для подъема тяжелых строительных элементов несколько домкратов соединяются вместе.
4. Ручные лебедки используются для вспомогательных строительных целей.
5. Тали используются для сборки машин.
6. Бывают электрические тали и тали с ручным приводом.
7. Реечный домкрат имеет более высокую эффективность, чем винтовой домкрат.
8. Реечный домкрат более опасен в работе, чем винтовой домкрат, так как у него нет тормозов.
9. Гидравлические домкраты используются для монтажа тяжелого оборудования.
10. Ручные лебедки развивают тяговые усилия до 10 тонн.
1. I am going to speak about…
2. Now a few words about …
3. It should be said that …
4. It is interesting to note that …
5. The text goes on to say that …
6. In conclusion I`d like to speak about …
Situation: Imagine that your friend and you are preparing for the English examination. You discuss the theme “Handling Equipment”.
Let`s discuss the theme “Handling Equipment”.
I don`t mind. What handling equipment do you know ?
As far as I know there are jacks, winches and hoists.
Right you are. And jacks are the simplest load-lifting appliance for raising a load to a small height, am I right ?
Yes, you are right. As far as I remember a hoist is a simple suspension-type small-size mechanism.
What is it used for ?
I think it is used for assembling machines.
Фонетика: Повторение чтения буквосочетаний “OW”, “OU”;
буквы “С” перед “I, E, Y”.
Грамматика: Инфинитив в функции определения и обстоятельства.
Тема: Башенные краны. Tower Cranes.
E X E R C I S E S
[s] - lattice, latticed, appliance, cylinder, reciprocate, since, device, except.
1. Hoisting [`hoistiN] n - подъем
2. Slewing [`slHiN] n - поворот
3. Luffing [`lAfiN] n -– движение стрелы крана в вертикальном
и горизонтальном положении
4. Outreach [`autrJC] n - – вылет стрелы крана
5. Revolve [ri`vLlv] v – вращать
6. Revolving head [ri`vOlviN`hed] -– поворотная головная часть
7. Counterweight [`kauntqweit ] n -– противовес
8. Tower [tauq] n - башня
9. Boom [bHm] n - стрела
10. Latticed [`lxtist] a - решетчатый
11. Framework [`freimwWk] n –- каркас (конструкции)
12. Hoisting pulley [`hOistiN`puli] –- стрелоподъемный полиспаст
13. Hook [huk] n -– крюк
14. Turntable [`tWnteibl] n - поворотная платформа
15. Split [split] v – разбирать на части
16. Gantry [`gxntri] n –- портал
17. Manoeuvrable [mq`nHvrqbl] a -– маневровый
18. Extensively [iks`tensivli] adv -– широко
19. Whole [hqul] a - целый, весь
20. Arrangement [q`reinGmqnt] n -– расположение, устройство
21. Load moment [`lqudmqumqnt] - грузовой момент
22. Middle [`midl] n - середина
23. Assemble [q`sembl] v -– собирать, монтировать
24. Upper [Apq] a - верхний
1. Counterweight a) поворотная головная часть
2. Turntable b) портал
3. Hoisting pulley c) поворотная платформа
4. Latticed d) противовес
5. Support e) стрелоподъемный полиспаст
6. Framework f) решетчатый
7. Gantry g) опора
8. Revolving head h) каркас
1. Luffing and jib mechanisms a) решетчатая стальная конструкция
2. The product of the weight by
outreach b) высоко-маневровая стрела
3. The design of the revolving
structure c) произведение веса на вылет стрелы
4. The arrangement of the
counterweight d) стальные трубы большого диаметра
5. Latticed steel framework e) механизмы изменения вылета
грузового крюка
6. Large diameter steel tubes f) устройство поворотной части
7. Highly manoeuvrable boom g) расположение противовеса
Tower cranes are employed to lift materials to be used for building.
To be used – инфинитив в страдательном залоге в функции определения. Всегда стоит после определяемого слова. На русский язык переводится придаточным определительным предложением с союзом «который», имеет оттенок модальности и переводится с добавлением слов «должен, следует».
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