| 摘要 |
PURPOSE: An underground utilities indicator is provided to allow excavation workers to accurately know pipes laid underground visually and with the nose by evaporating chemical materials filled on the inside as colored and odorous smoke and discharging the colored and odorous smoke to the outside when the ground is exposed to outside and is under shock in the excavation work. CONSTITUTION: In a guide, a guide head is formed to be combined on a top of a body(20), and a sleeve(32), which is projected to the guide head, has a hollow cylindrical shape and is inserted inside the body, is formed. An elastic member(40) is inserted into an inside diameter of the sleeve. An operating weight(50) is combined in a free end of the elastic member. An operating bar(60) is hinge-coupled in an operating bar supporting part projected in the exterior of the sleeve, is touched with the operating weight of the sleeve, is bent and is rotating-operated. In an inside bar(61), one end is hinge-coupled in an inside bar supporting part projected in the exterior of the sleeve and is bent, and the other end is exposed to the outside of a body and make the inside bar(61) revolve with rotations. A smoke exhaust part(80) is settled inside the body to be separated with the lower of the sleeve and the chemical substance is contained on the inside. Smoke is exhausted in the smoke exhaust part if the operating weight is collided with the smoke exhaust part with elastic actions of the elastic member. |
