Advantage of a sheave wheel in a shaft headgear​

1 answer
Question:

Advantage of a sheave wheel in a shaft headgear

Answers

Answer:sorry if wrong Explanation:One sheave means that you are using a single drum winder. They are the worst! Double drum winders control easier, brake better and are much more efficient. They save time ( two skips or cages) and can be clutched to perform faster shift transport. A single drum is slow, unbalanced and can be a nightmare if it trips out during hoisting. If the brake system is not perfect it can be a real hairy experience. For a runaway single drum, there is no counterbalance effect. It always runs to destruction. With a double drum, the driver still has a chance to control the winder to a certain extent and he has two sets of brakes to rely on. A single sheave could also mean a shaft with a single compartment. No second means of escape unless there are ladders or stairways. Not a very healthy situation.Those are just a few points. I am sure much more can be said in favor of a double drum winder and two or more sheaves in the headgear. Most of the shafts I have worked at have multiple winders and up to ten compartments. They all have a small single drum service winder for emergencies and moves of personnel during shift times. They are referred to as the Mary - Annes. Apparently, the name originated in the U.K. where an aristocratic mine owner named the first such winder after his mistress.

Similar Solved Questions

1 answer

If anyone can tell me the names of these paintings with the date they were released and the median (materials used ) I will be so grateful !!!!!! The artist is paolo troilo

If anyone can tell me the names of these paintings with the date they were released and the median (materials used ) I will be so grateful !!!!!! The artist is paolo troilo...
1 answer

Can somebodt please help me

can somebodt please help me...
2 answers

What is 2.9 as a fraction?

what is 2.9 as a fraction?...
1 answer

1. Which of the following is an example of Heterogeneous mixture? A. water B. rainwater C. soft drinks D. sand with water ​

1. Which of the following is an example of Heterogeneous mixture? A. water B. rainwater C. soft drinks D. sand with water ​...
1 answer

Science Pls help me with number 9 and 10 ​

Science Pls help me with number 9 and 10 ​...
1 answer

Which words in the poem reflect the idea of unity? Based on the poet's word choice, what is the mood of the poem?

Which words in the poem reflect the idea of unity? Based on the poet's word choice, what is the mood of the poem?...
2 answers

Please help i only have today to finish this

Please help i only have today to finish this...
1 answer

Which property is demonstrated below? A. inverse property B. distributive property C. commutative property D. identity property

Which property is demonstrated below? A. inverse property B. distributive property C. commutative property D. identity property...
1 answer

The area, A, of a rectangle is 120x2 78x – 90, and the length, l, of the rectangle is 12x 15. Which of the following gives the width, w, of the rectangle? 9x 4 10x – 19 10x – 6 8x – 6

The area, A, of a rectangle is 120x2 78x – 90, and the length, l, of the rectangle is 12x 15. Which of the following gives the width, w, of the rectangle? 9x 4 10x – 19 10x – 6 8x – 6...
1 answer

Solve the system of equations 6x-5y=15 x=y+3

Solve the system of equations 6x-5y=15 x=y+3...
1 answer

What is the value of W?

What is the value of W?...
1 answer

What does the term middle passage describes?

What does the term middle passage describes?...
1 answer

How can a chloroplast, a structure found in plant cells but not in animal cells, provide energy for BOTH plants and animals?

How can a chloroplast, a structure found in plant cells but not in animal cells, provide energy for BOTH plants and animals?...
1 answer

Help ASAP!!!!!!!!!!!!!!!!!!!!!! Only if you know the answer

Help ASAP!!!!!!!!!!!!!!!!!!!!!! Only if you know the answer...
1 answer

¿Es Speedy Gonzalez racista, estereotipo o ninguna?

¿Es Speedy Gonzalez racista, estereotipo o ninguna?...
1 answer

Dan and cheryl paddled their canoe 40 mi in 5 hr with the current and 16 mi in 8 hr against the current. Find the speed of the current and the speed of the canoe in still water

dan and cheryl paddled their canoe 40 mi in 5 hr with the current and 16 mi in 8 hr against the current. Find the speed of the current and the speed of the canoe in still water...
1 answer

What is the minimum age that individuals can purchase tobacco legally in most US states?

What is the minimum age that individuals can purchase tobacco legally in most US states?...
2 answers

6p = -42 what is the answer???????????

6p = -42 what is the answer???????????...

-- 0.015414--