§ 2. Подвесные конвейеры

Текст II

I. Запишите следующие слова и словосочетания в тетрадь и по­старайтесь запомнить их значения:

1. overhead conveyor подвесной конвейер

2. continuous system система с непрерывным движением

3. assembly line layout расположение сборочной линии 4. I-beam двутавровая балка

5. track направляющая

6. tram-rail монорельс 3 7. V-belt клиновидный ремень

8. variable-speed drive вариатор

9. tray ящик для транспортировки мелких деталей, лоток

10. suspension system подвеска

11. load station пункт загрузки

12. unload station пункт разгрузки

II. Проанализируйте последнее предложение первого абзаца текста II и переведите его на русский язык

III. Прочтите текст II и отметьте те его части, в которых содержат­ся ответы на следующие вопросы:

1) What are the advantages of overhead conveyors?

2) What does an overhead conveyor generally consist of?

Text II. OVERHEAD CONVEYORS

Next to belt conveyors, overhead conveying systems are by far the most important piece of equipment. Their main advantage is that they occupy space that, in most cases, would otherwise re-main unused. There are other onsiderations, such as their simp­licity of design, plus flexibility of routing and the fact that different work levels can be served by one and the same continuous system. Also, they are not rigid schemes; if required, they can fairly readily be re-arranged to suit any proposed new machi­nery or assembly line layout, unlike various other conveying systems that are fixed to suit a particular layout.

An overhead conveyor generally consists of a power propelled chain travelling at moderate speed, suspended from trolleys run­ning on an I-beam or other suitable track, and provided with at­tachments of various forms adapted to the work to be done. The chain has a fixed path but it can negotiate horizontal and vertical curves easily. The loads are not concentrated as in the tram-rail system, and so the track is much lighter. The motor is usual­ly connected by roller chain or V-belt to a vertical-type worm gear or through a variable speed drive which permits adjustments to suit varying operating conditions.

A wide range of capacities is available to handle loads up to several thousand pounds. Unit loads are usually carried on trays, hooks, baskets or suspension systems.

Automatic load and unload stations are often designed to increase the utility of the conveyor.

Fig. 2. Overhead conveyor

IV. Перечислите части подвесного конвейера, изображенного на схеме 2

V. Переведите на русский язык части текста II, содержащие ответы на вопросы упр. III

Текст IIА

I. Определите по словарю значения следующих слов и словосочетаний из текста IIА:

1. lug 7. to tow .

2. cadmium plated 8. pendant

3. remote control 9. to rivet

4. carrier 10. avoidance

5. layout 11. reduction gear

6. distinctly 12. to propel