| 摘要 |
The present invention relates a ground installation protection box for an underground distribution line, which is capable of preventing a connector from falling down or preventing the underground distribution line from being separated from the connector by allowing buffer means to absorb and attenuate a shock when an earthquake occurs. A ground installation switchboard for an underground distribution line according to the present invention includes: a distribution line box (100) installed on the ground; an underground protection tube (200) communicating with the distribution line box (100) to protect an underground distribution line (L) from external force; an installation frame (300) installed on the distribution line box (100); buffer means (400) disposed on a lower portion of the installation frame (300) to elastically support the installation frame (300); and a connector (500) rotatably installed through the medium of a bearing (B) to the installation frame (300) to fix the underground distribution lines (L) and to electrically connect the underground distribution lines (L) to each other. According to an embodiment of the present invention, when an earthquake occurs in state that the underground distribution line is connected to the distribution line box through the medium of the connector, the buffer means installed between a supporter and the installation frame absorbs and attenuates the vibration transferred to the installation frame, the connector and the underground distribution line, so that the connector can be prevented from falling down or being separated from the underground distribution line. |
