CN2281366Y

CN2281366Y - High strength safety manhole cover

Info

Publication number: CN2281366Y
Application number: CN 95242770
Authority: CN
Inventors: 王远志
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-02-20
Filing date: 1995-02-20
Publication date: 1998-05-13
Anticipated expiration: 2005-02-20

Abstract

The utility model provides a high-strength safety manhole cover. The utility model comprises a cover and a cover seat, and is formed by taking a concrete slab as the base and an anti-pressure rib strip, a tensile reinforcement, a seating ring and a bearing ring as auxiliary parts. The utility model adopts a T-shaped and #-shaped bidirectional intersecting beam slab cover structure, a curved surface structure, a slab-like structure, or a prestressed structure. The utility model gives the reins to the strength potentiality of various elements and substantially raises the strength of the manhole cover. With a chain or a hinge connecting the cover and the manhole cover seat, the utility model has the functions that the high-strength safety manhole cover prevents theft, jump and damage without self-turning over, etc.; the utility model has the advantages of safety, high durability, convenient manufacture, low cost, light weight, high strength, novel structure, etc. The utility model can prevent the manhole opening from lacking cover, ensures the safety of pedestrians and vehicle traffic, and can be widely used in various manhole openings of underground conduits.

Description

The high strength Safety well cover

The utility model relates to a kind of well lid that is applicable to various underground pipeline well heads and other underdrain well head.

The underground pipeline well head adopts casting iron well lid usually now, but has stolen serious problem in use for many years.The vehicle, the pedestrains safety accident that cause because of the scarce lid of well head emerge in an endless stream the safety of the serious harm people and national wealth; Simultaneously, because cast iron materials supply in recent years is becoming tight, price raises up, and has not only increased the production and construction expense, has also aggravated the stolen of well lid to a certain extent, and contradiction is growing more intense.

It is stolen fundamentally to solve well lid, and well head lacks the problem of lid, changes the well lid material, and using no reproducibility material well lid is a good plan undoubtedly.But general concrete manhole cover intensity is too low, and fragility is big, cracky, thereby life cycle is short, and physical dimension is big in addition, and weight is big, fails in decades to promote the use of always; Though the steel fibrous concrete material has improved toughness of concrete to a certain extent, the improvement amplitude is little, and DeGrain does not still fit into the high strength well lid; Other as the well lid of glass fiber reinforced plastic, resin, plastic material, all have the big defective of insufficient strength, be difficult to reach China's casting iron well lid quality specifications (CJ/T3012-93 " casting iron well lid ") of Ministry of Construction's promulgation roadway and sidewalk well lid load requirement (being respectively 360KN, 210KN).Complex process in addition is so have difficulty in taking a step in promoting the use of.

The purpose of this utility model is to overcome above-mentioned deficiency and a kind of high strength Safety well cover is provided, and has fundamentally solved well lid because of stolen, the damaged problem that causes well head to lack lid.

The utility model comprises cage (1) and lid (2), by concrete slab (4), tensile reinforcement (3), resistance to compression rib (5), seat rings (8), load-bearing ring (7) is formed, its middle cover (2) is based on no reproducibility concrete slab (4), at the high castiron resistance to compression rib (5) of pressure zone adapted compressive strength, castiron seat rings (8) at lid (2) peripheral adapted good rigidly, at the high tensile reinforcement (3) of lid (2) tensile region adapted tensile strength, rationally utilize material by allocation optimum, thereby the structural strength that has increased substantially well lid reaches optimum efficiency.

The structure (6) of lid (2) can adopt T font structure, the two-way friendship beam and slab structure of groined type, curved-surface structure, prestressed structure or platy structure, and apparent intensity requires size and decides.The resistance to compression rib (5) of lid (2) can be made groined type, M shape, radiation shape, arch, tabular or curved-surface structure, but also can be linked to be integral body with the seat rings (8) of lid (2) periphery, thereby constitute a high-strength lid, the tensile reinforcement (3) of lid (2) can be configured to groined type, radiation shape, tabular or suspended-cable structure, but also can be linked to be integral body with the seat rings (8) of well lid periphery by bolt, hook or the form of tying up, to increase the structural strength of well lid.Cage (1) can adopt cast iron or concrete material, if adopt concrete material, increases the cage load bearing stength at the load-bearing district of cage (1) adapted load-bearing ring (7).Cage (1) can adopt plane or trapezoidal bearing surface to contact with lid between (2).Between lid (2) and cage (1), can adopt chain or hinge-coupled, to prevent the diverting raising safety.The shape of well lid can be circular, square or polygon, and upper surface can adopt the groined type anti-slip tank.

The utility model is because employing scientific method and Rational structure event intensity are very high, and cracky can not satisfy load requests at different levels.And can alleviate well lid weight, and be convenient to install and use, also saved metal material, reduced cost.Simultaneously, owing to adopted no reproducibility material in a large number, this has coupling arrangement the only little metal of portion's use within it material, and lid and cage, has fundamentally solved the stolen problem of well lid again, can guarantee that well head does not lack lid, support vehicles, pedestrian safety.As seen, the utlity model has high-strength light, durable in use, safe antitheft, easy to use, economize on resources, advantage such as reduce cost has considerable economic and social benefit.

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is the sectional drawing of high strength Safety well cover form of structure.

Fig. 2 is the top and bottom perspective views of high strength Safety well cover form of structure.

Wherein (1) is that cage, (2) are that lid, (3) are tensile reinforcement, is positioned at the zone of bearing the pulling force maximum.Can adopt the reinforcing bar of tensile strength than high hundreds of times of no reproducibility material.(4) be concrete slab, be the main body of well lid.Its material can be cement, resin, fibrous concrete or plastics, glass fiber reinforced plastic etc.(5) be the resistance to compression rib, be positioned at the zone of bearing pressure and impact force maximum.Employing is difficult for getting rusty, compressive strength height, wear-resisting cast iron or ductile iron etc.(6) be the form of structure of well lid, can adopt curved-surface structure, the two-way friendship beam and slab structure of groined type, T font structure, prestressed structure, platy structure.(7) be the load-bearing ring, be positioned at the load-bearing district of cage (1), (8) are seat rings, can connect with resistance to compression rib (5) casting to be one, and some circular holes can be arranged on the periphery of (8), can be linked to be integral body to tensile reinforcement (3) and seat rings (8) by circular hole.Available chain or hinge-coupled between lid (2) and the cage (1) are in case divert.

Claims

1, a kind of well lid, comprise cage (1) and lid (2), it is characterized in that, lid (2) is by concrete slab (4) with at the high castiron resistance to compression rib (5) of compressive strength of pressure zone adapted of lid (2), in the castiron seat rings (8) of the good rigidly that covers (2) peripheral adapted, form at the high tensile reinforcement (3) of tensile strength of lid (2) tensile region adapted.

2, well lid according to claim 1 is characterized in that, the form of structure of lid (2) can adopt the two-way friendship beam and slab structure of T font structure, curved-surface structure, platy structure, prestressed structure or groined type, and apparent intensity requires size and decides.

3, well lid according to claim 1 is characterized in that, the shape of well lid can be circular, square or polygon, and upper surface can adopt " well " font anti-slip tank.

4, well lid according to claim 1, it is characterized in that, the resistance to compression rib (5) of lid (2) pressure zone can make groined type, M shape, radiation shape, arch, plate or or curved-surface structure, but also the seat rings (8) that can cover (2) periphery is linked to be integral body, constitutes a high-strength lid.

5, well lid according to claim 1 is characterized in that, the tensile reinforcement (3) of lid (2) tensile region can be configured to groined type, radiation shape, tabular or suspended-cable structure.

6, well lid according to claim 1 is characterized in that, the tensile reinforcement (3) of lid (2) tensile region can be linked to be integral body with the seat rings (8) of well lid periphery by bolt, hook or the form of tying up, and constitutes a lid.

7, well lid according to claim 1, it is characterized in that cage (1) can adopt plane or trapezoidal bearing surface to contact with lid between (2), cage (1) can be concrete or cast iron materials, if adopt concrete material, can be at the load-bearing district of cage (1) adapted load-bearing ring (7).

8, well lid according to claim 1 is characterized in that, can adopt chain or hinge-coupled between lid of well lid (2) and the cage (1).