| 摘要 |
Brake drum which comprises two or more shoes 2, 3, 4 and 5, each one of which has a rocking arm 6 and another, actuating arm 7 which are articulated to the drum by means of shafts 8-10 parallel to the shaft of said drum. The actuating arm 7 consists of at least one hydraulic cylinder 9. <IMAGE>
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