| 摘要 |
Apparatus for replacing a suspension insulator on a tower having a davit arm supporting an attached insulator and a conductor shoe attaching an energized conductor to the insulator lower end including a non-conductive board longer than and mounted to the tower below the davit arm, struts extending between the board and the tower, and a movable slider mounted on the board, the slider supporting a jack and a conductor lifting bar attached to the jack. Without contacting any energized components, a lineman moves the slider and operates the jack to lift and support the energized components, detaches the shoe from the insulator, moves the energized components to a remote position on the board, detaches and replaces the insulator while it is supported by a helicopter, moves the slider and operates the jack to lift the shoe into alignment with the insulator and attaches the shoe to the insulator. |
| 主权项 |
1. Apparatus for replacing an electrical suspension insulator on a tower having insulator-supporting and high voltage energized electrical conductor-supporting davit arms wherein said suspension insulators are supported by said davit arms and said conductors are supported in conductor shoes attached to the lower ends of said suspension insulators, said apparatus comprising:
an elongate, non-conductive board having a planar upper surface and inner and outer ends, said inner end including means for mounting said board to said tower, said board including elongate side panels projecting above said planar surface for defining between said side panels said upper surface of said board a generally U-shaped track, said board having a length at least one foot longer than the davit arm supporting the insulator to be replaced; elongate, non-conductive, length-adjustable strut means having inner and outer ends, said inner end including means for mounting said strut means to said tower with said outer ends of said strut means attached near the outer end of said board, said strut means adapted to be mounted to said tower below said board for providing diagonal bracing support therefor; and an elongate, non-conductive slider mounted in said track for movement between inner and outer ends of said board, said slider including a planar surface parallel to said upper surface of said board and slider or roller means between said board upper surface and said slider planar surface for facilitating movement of said slider along said track, the upper side of said planar surface including jack means rigidly mounted thereon, said jack means including a piston means vertically reciprocally movable therewithin, and conductor lifting means rigidly connected to said piston means for engaging said conductor. |
