Table 3 The working conditions.

From: Coal falling trajectory and strength analysis of drum of shearer based on a bidirectional coupling method

Type

Working condition

Traction speed/v (m/s)

rotating speed/n (rad/s)

cutting depth/b (mm)

A

1

0.07

9.5

430

2

0.07

9.5

480

3

0.07

9.5

530

4

0.07

9.5

580

5

0.07

9.5

630

B

1

0.07

7.5

530

2

0.07

8.5

530

3

0.07

9.5

530

4

0.07

10.5

530

5

0.07

11.5

530

C

1

0.03

9.5

530

2

0.05

9.5

530

3

0.07

9.5

530

4

0.09

9.5

530

5

0.11

9.5

530