Automatic opening device for manhole cover

• Main Author: SHEN YONGXIAN
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2016
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STORING; TRANSPORTING

The invention discloses an automatic opening device for a manhole cover. The automatic opening device comprises two air cylinders and a manhole, and is characterized in that automatic opening of the manhole cover is controlled by controlling the two air cylinders to stretch and retract successively; the air cylinder 1 is arranged on the upper portion of a head, one end of the air cylinder 1 is connected with a fixed plate 2, and the other end of the air cylinder 1 is connected with a movable plate 3; the air cylinder 2 is arranged on one side of equipment, one end of the air cylinder 2 is connected with a main beam 5, and the other end of the air cylinder 2 is connected with an air cylinder supporting base 9; the air cylinder supporting base 9 is connected with a barrel 10 and fixed to the barrel 10; and the spherically dished head on the upper portion of the manhole 6 is connected with the main beam 5 and a supporting plate 4, and a main beam supporting base 7 is connected with the main beam through a pin. T