| 摘要 |
A protective tube structure for an underground electricity cable is provided to correspond sinking of a cable protective tube appropriately by installing a horizontal bar and a spring in a lower part leveling plate. A plurality of upper and lower boards(21,25) and cross side boards(30) are installed according to the length of the cable protective tube(10) by a steel bar(50) and a screwnut(53). The upper board(21) in which 2 square holes(22) is penetrated is formed and the lower board(25) in which 2 square holes(26) is penetrated. A protective tube support(20) is composed of a cross side board in which 2 steel bar holes(31) are penetrated into the top and lower part with a cross type. A moving rod(63) is inserted into a circular protrudor in a lower-part of the lower board of the protective tube support and is moved according to subsidence of ground. The protective tube support is installed according to the length of the outer side of the cable protective tube in which a power cable(12) is installed and appropriately corresponds to the subsidence of ground. |
