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Fastener for street ironwork, assembly, street ironwork and corresponding method

A technology for road maintenance and assembly, applied in water conservancy projects, artificial islands, underwater structures, etc., can solve problems such as high cost, difficulty, and even danger

Active Publication Date: 2012-08-08
SAINT GOBAIN PAM SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of this type of fastener is that it is manufactured specifically for the cover and is therefore expensive
[0005] In addition, with such complex fasteners, the installation of accessories on road maintenance equipment is often difficult or even dangerous, and requires skilled workers to operate

Method used

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  • Fastener for street ironwork, assembly, street ironwork and corresponding method
  • Fastener for street ironwork, assembly, street ironwork and corresponding method
  • Fastener for street ironwork, assembly, street ironwork and corresponding method

Examples

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Effect test

Embodiment Construction

[0049] figure 1 and 2 Shown is a manhole inspection shaft according to the invention, which is designated by the general reference numeral 10, for example a manhole inspection shaft for accessing an underground technical room equipped with radio communication equipment.

[0050] The manhole 10 has a frame 12 and two cover plates 14 .

[0051] Frame 12 is fixed on the ground and defines an entrance and exit 16 ( Figure 10 ), such as access to a basement with communication cables. In the present case, the access opening 16 is square.

[0052] The manhole 10 defines a manhole plane P-P which is substantially parallel to the ground when installed.

[0053] The manhole inspection shaft 10 defines an outer E and an inner I . The manhole 10 also defines a central axis X-X extending perpendicularly to the manhole plane P-P. Hereinafter, the expression "peripheral" refers to a direction radially away from the axis X-X, while "central" refers to a direction close to the axis X-...

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PUM

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Abstract

The present fastener (36) for street ironwork includes a fastening or locking means (56). The fastener (36) includes a retaining foot (60) suitable for removably connecting the fastener (36) to a member of the street ironwork, via a receiving cavity (40) made in the member of the street ironwork by means of a shape-matching connection. The invention further relates to the use in attaching jacks to man hole covers.

Description

technical field [0001] The invention relates to a fastening fastener for road maintenance equipment, which has a fixing part or a locking part. Background technique [0002] Such fasteners are known for fastening accessories to closures of inspection technical rooms of underground cable networks, for example to closures of inspection openings of communication equipment, or to manholes or inspection openings for underground water supply networks Closed devices such as the closed device of the manhole inspection well of the roadway or sidewalk. [0003] These road maintenance devices generally have a frame permanently fixed in the ground, into which one or more cover plates are detachably inserted, the cover plates being arranged close to the ground. [0004] A disadvantage of this type of fastener is that it is produced exclusively for the cover and is therefore expensive. [0005] In addition, with such complex fasteners, the installation of the accessories on the road mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/14
CPCE02D29/1427E02D29/1418E02D29/14E02D29/1454E02D29/1463Y10T29/49826
Inventor J-C·鲁瓦耶V·罗塔梅尔
Owner SAINT GOBAIN PAM SA
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