Multifunctional automatic closing manhole cover

Abstract

The invention discloses a multifunctional automatic closing well lid. The problems that according to an existing inspection well lid, pedestrians can be frightened or injured when falling into a fall prevention net, a large-scale drainage device can not enter an inspection well conveniently, a lid plate needs to be reset manually, and burglary prevention can not be achieved easily are solved. According to the multifunctional automatic closing well lid, a grid (11) which can prevent people and objects from falling down is arranged in a cover plate base (2), an anti-theft bolt (10) on the grid (11) penetrates through the wall of the cover plate base (2) to be inserted into a hinged device (3) and placed below a second pin shaft (8), and one end of a shell (5) of the hinged device (3) is fixed on the outer surface of the cover plate base (2). Accordingly, the multifunctional automatic closing well lid has the advantages that the pedestrians can not be frightened or injured when falling into the fall prevention net, the large-scale drainage device can enter the inspection well conveniently, the cover plate can be automatically reset and the anti-theft purpose is achieved.

Description

[0001] This application is a divisional application with application number 201310149762.3, an application date of April 26, 2013, and an invention title of "Multifunctional Automatic Closing Manhole Cover". technical field [0002] The invention relates to a well cover, in particular to a multifunctional self-closing well cover composed of a cover plate, a cover plate seat and a hinged device. Background technique [0003] At present, such a inspection shaft cover is disclosed on the market. Its structural characteristics are: it is composed of a cover plate, a cover plate seat and a hinge device. The cover plate is movably connected with the cover plate seat through a hinge device. The hinge device is hinged. There are cover holes on the plate, and a number of expansion bolts are evenly distributed on the wall of the inspection well. An anti-drop net is hung on the expansion bolts. When the cover plate is damaged or washed away by the water flow or air flow in the well, it ...

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Problems solved by technology

[0003] At present, such a inspection shaft cover is disclosed on the market. Its structural characteristics are: it is composed of a cover plate, a cover plate seat and a hinge device. The cover plate is movably connected with the cover plate seat through a hinge device. The hinge device is hinged. There are cover holes on the plate, and a number of expansion bolts are evenly distributed on the wall of the inspection well. An anti-drop net is hung on the expansion bolts. When the cover plate is damaged or washed away by the water flow or air flow in the well, it can effectively prevent pedestrians from falling. into the inspection well, but because the anti-drop net is far away from the cover plate, it is easy for pedestrians to be frightened and injured when falling into the anti-fall net, and because an escalator is provided on the inspection shaft wall for the staff to go up and down, it is necessary for the sewer to be blocked. When draining, it is inconvenient for large-scale drainage devices to enter. At the same time, because the opening angle of the cover plate is greater than 90°, after the sewer is blocked and the cover plate is opened, the cover plate needs to be reset manually, otherwise it will easily increase the safety hazards of driving and pedestrians. Therefore, The labor intensity of the staff is increased. In addition, since the cover plate is movably connected with the wellhead through hinges, it is not easy to prevent theft

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