| 摘要 |
A draw works comprises a drum shaft which is supported off a base at spaced locations by four bearings. Each of the locations is adjacent a support side plate connected to support members of the base. The support members extend transversely to the drum shaft. Two of the support side plates are located on one side of a drum associated with the drum shaft, and two other support side plates are associated with the drum shaft on the other side of the drum. Disposed between the first two support side plates on one side of the drum is a mechanism for receiving a first power input, and disposed between the second two support side plates is another mechanism for receiving a second power input. Transmission mechanisms for coupling the power inputs to the drum shaft are also disclosed.
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