Sight glass is used to town road zig zag

• Main Author: SUN YUNHU
• Format: Patent
• Language: Chinese; English
• Published: 12.10.2018
• Subjects: ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS

The utility model discloses a sight glass is used to town road zig zag, the on -line screen storage device comprises a base, it is connected with screw sleeve to show rotation in surface on the base,be equipped with in the screw sleeve with screw sleeve assorted spiral shell rasp bar, and screw sleeve and spiral shell rasp bar threaded connection, the cover is equipped with driven gear on being close to the screw sleeve lateral wall of base, the upper surface of base rotates and is connected with the dwang, the one end that the base was kept away from to the dwang is connected with the driving gear with driven gear engaged with, the spiral shell rasp bar one end that lies in the screw sleeve outside is connected with the observation picture frame, install and observe picture frame assorted sight glass in the observation picture frame, the one end that spiral shell rasp bar was kept away from to the observation picture frame is connected with two symmetrical bracing pieces, the one endof two bracing piece outl