| 摘要 |
A packing puller and puller lifting tool are used together for extracting packing material or seals from a stuffing box, as used for sealing various hydraulic equipment such as motors, pumps, shafts, etc. The pulling tool comprises either a rigid or a flexible shaft with a bit attachment end at one end and a handle at the opposite end. The working bits may be interchangeable in order that the optimum configuration may be selected for a given job, and/or for replacement of a damaged bit. The shaft of the puller includes a series of lifting lugs permanently affixed thereto, with which a lifting or lever tool may be engaged to provide additional mechanical advantage in lifting the puller and packing from the stuffing box. The lifting tools may comprise a single elongate arm with each end having a different working bit configuration for optimum efficiency, or may comprise a lever arm with removably interchangeable bits so the appropriate bit configuration may be selected for any given situation. The lever arm and bits preferably have a mating square drive configuration, with the lever arm being similar to a square drive ratchet extension with a handle at one end thereof and the bits having square sockets opposite their working ends. Alternatively, the handle may comprise a square drive ratchet with the bits having square drive sockets in their sides, so the ratchet may be rotated in the manner used for working with a threaded fastener.
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