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Manhole cover made of composite material with glass fibre reinforcing bar structure

A technology of composite materials and reinforcing ribs, applied in underwater structures, infrastructure engineering, hydraulic engineering, etc., can solve the problems of anti-aging, poor anti-fatigue effect, affecting service life, poor bearing capacity, etc., and achieve anti-aging effect Good, extended service life, strong bearing capacity

Active Publication Date: 2009-02-04
JIANGSU CHANGAN COVERS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, existing a kind of composite material manhole cover, as patent publication number is a kind of steel plate framework polyester glass fiber reinforced composite material manhole cover disclosed by CN 2753801Y, and its well cover has steel plate skeleton, and volume is heavy, and cost is big, meets heavy load back easily cracking, poor load-bearing capacity, and affect the service life due to different linear expansion coefficients; another kind of fiber-reinforced resin-based composite material manhole cover disclosed by the patent publication number CN 1648356A is reinforced by mesh or sieve glass fiber. The ribs are distributed in or on the back of the manhole cover. The structural distribution of the glass fiber reinforced ribs is unreasonable, and it is not molded at high temperature for one-time molding. The multi-layer structure is easy to delaminate and peel off, which affects the bearing capacity. The anti-aging and anti-fatigue effects are poor, which affects the service life.

Method used

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  • Manhole cover made of composite material with glass fibre reinforcing bar structure
  • Manhole cover made of composite material with glass fibre reinforcing bar structure
  • Manhole cover made of composite material with glass fibre reinforcing bar structure

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0011] figure 1 The composite inspection manhole cover with glass fiber reinforced rib structure shown is formed by composite filler layer 1 and glass fiber reinforced rib 3 through high temperature molding, and there is a protruding reinforcing surface 2 on the outer circumference of the back of composite filler layer 1 , fasten and strengthen the periphery of the glass fiber reinforced rib 3 .

[0012] figure 2 , 3 The glass fiber reinforced rib 3 shown is embedded in the back of the composite filler layer 1 in an arc shape, and 24 reinforcing rib endpoints are evenly distributed on the arc geometric circumference, each endpoint is the intersection point 4 of the four ribs, and the other end point of the four ribs is Two of the endpoints are distributed on the adjacent endpoints 6 and 7 on both sides of the symmetrical point 9 of the junc...

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Abstract

The present invention relates to one kind of manhole cover of glass fiber reinforced composite material. The manhole cover includes one composite material layer and one arched reinforcing glass fiber rib layer with 16-32 ends in the circumference, with each of the ends being intersecting point of four ribs. The manhole cover has reasonably distributed reinforcing glass fiber ribs in optimized stress state, great bearing capacity, low cost and long service life.

Description

technical field [0001] The invention relates to an inspection well cover, in particular to a composite material inspection well cover with glass fiber reinforced rib structure. Background technique [0002] At present, existing a kind of composite material manhole cover, as patent publication number is a kind of steel plate framework polyester glass fiber reinforced composite material manhole cover disclosed by CN 2753801Y, and its well cover has steel plate skeleton, and volume is heavy, and cost is big, meets heavy load back easily cracking, poor load-bearing capacity, and affect the service life due to different linear expansion coefficients; another kind of fiber-reinforced resin-based composite material manhole cover disclosed by the patent publication number CN 1648356A is reinforced by mesh or sieve glass fiber. The ribs are distributed in or on the back of the manhole cover. The structural distribution of the glass fiber reinforced ribs is unreasonable, and it is not...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D29/14
Inventor 赵书文
Owner JIANGSU CHANGAN COVERS
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