| 摘要 |
A centralizer apparatus (1) for centralizing a rod (100). The centralizer apparatus (1) has a guide roller (2) which contacts the rod (100) and a pressure adjustment member (5) to enable the contact pressure of the guide roller (1) against the rod (100) to be adjusted. Mounting plates (3a, 3b, 4a, 4b) mount the centralizer apparatus (1) so that it is fixable relative to the rod (100). The centralizer apparatus (1) enables the orientation of the guide roller (2) to be adjusted relative to the rod (100) about two orthogonal axes (25,26). The guide roller (2) is also locatable relative to the circumference and length of the rod (100) at selected locations.
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