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Device for hinging a lid or cover to a frame, such as a manhole

A technology of inspection hole and frame, applied in the field of devices for hinged covers or covers to frames such as inspection holes, capable of solving problems such as complex structures, unsuitable operation convenience, etc.

Inactive Publication Date: 2009-11-18
NORINCO SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Hitherto, those hinges that have been proposed for tilting a hood or lid from its position closing the frame to its open position, and vice versa, have a very complex structure and are not suitable for allowing the hood to be opened in its open position. or to close the manipulation of the frame's location for convenience

Method used

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  • Device for hinging a lid or cover to a frame, such as a manhole
  • Device for hinging a lid or cover to a frame, such as a manhole
  • Device for hinging a lid or cover to a frame, such as a manhole

Examples

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Embodiment Construction

[0037] With reference to said figures, reference numeral 1 denotes a road manhole providing access, for example, into an inspection shaft of a tunnel dug underground, and comprising a cover or cover 2 and a frame 3 in its lowered closed position It is hingedly fitted to the frame 3 between a tilted raised position that opens the frame.

[0038] Said manhole has a generally quadrilateral shape, its cover 2 and frame 3 being made of cast iron.

[0039] In the lowered closed position of the frame 3, the cover 2 is embedded in the thickness direction in the walls 4 forming the sides of the frame 3, so as to be placed onto the notches 5 of the frame 3 and thus close the border delimited by the sides of the frame opening.

[0040] As shown, the side 4 of the frame 3 has an inclined inner surface 4a so as to have an angular clearance of eg about 9°. In this way, the inner surfaces of the two parallel sides 4a of the frame 3, called longitudinal sides, are beveled so as to deviate f...

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PUM

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Abstract

The present invention relates to a device for hinging a lid or cover to a frame, such as a manhole. The device is characterized in that it comprises two lateral pairs of links (6, 7) connecting the lid (2) to the frame (3) and allowing, when a lifting force is applied to the lid (2) occupying its lowered closed position, a couple to be applied to the lid (2) causing the lid (2) to come out of theframe (3) and causing the lid (2) to pivot about itself to its raised position in which it is held by the links (6, 7). The invention is applicable to roads.

Description

technical field [0001] The present invention relates to a device for hinged covers or covers to a frame of quadrilateral shape, in particular to a road manhole. Background technique [0002] With such a device, the hood can be tilted relative to the frame between a lowered closed position in which the hood engages the sides of the frame in the thickness direction so as to be The raised position is for accessing the opening of the frame at least partially positioned over a notch of the frame and closing an opening bounded by sides of the frame. [0003] Hitherto, those hinges that have been proposed for tilting a hood or lid from its position closing the frame to its open position, and vice versa, have a very complex structure and are not suitable for allowing the hood to be opened in its open position. Or close the position of the frame for operational convenience. Contents of the invention [0004] The object of the present invention is to provide a hinge device which h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/14
CPCE02D29/1463E02D29/14E02D29/1418E02D29/1454
Inventor 让-雅克·莫内莱特菲利普·杜特吕
Owner NORINCO SA
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