| 摘要 |
A one-piece wire guard device formed of non-metallic material for use in wel ls includes an inner ring having a split therein defining an opening and having a portion of reduced thickness defining a hinge is disclosed. Arcuate sections are dispos ed concentrically outwardly of the inner ring and are connected to the latter b y ribs. The ribs, arcuate sections and inner ring cooperate with each other to define openings for accommodating electric wires, ropes and the like therethrough. A guard devic e may be flexed about its hinge from a normally closed condition to an open position to permit a drop pipe to be inserted through the opening defined by the split. Releasabl y locking means, including an elongated locking element, lock the guard device upon th e drop pipe. Spacer tabs extend outwardly from the arcuate sections and engage a well casing to space the drop pipe from the casing and thereby prevent damage to the drop pipe, electrical wires, safety ropes and the like extending through the guard device.
|
