CN2782776Y

CN2782776Y - Manhole cover

Info

Publication number: CN2782776Y
Application number: CN 200520101266
Authority: CN
Inventors: 周群刚; 梅伟军
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-30
Filing date: 2005-03-30
Publication date: 2006-05-24
Anticipated expiration: 2015-03-30

Abstract

The utility model discloses a novel inspection well cover, which comprises a well cover body and a well cover seat. The lower part of the well cover body is in the shape of a hemispherical circular body. The well cover seat is composed of a seat ring, a seat edge and an inner support ring for the well cover. The seat ring, the seat edge and the inner support ring for the well cover are an integral structure. The well cover body and the well cover seat can be composed of an inner core layer, a reinforcing layer and an outer layer. The reinforcing layer is arranged between the inner core layer and the outer layer. Because the lower half part of the well cover body is in the shape of a hemispherical circular body and due to the design of the seat ring of the well cover seat, the seat edge and the inner support ring for the well cover, the novel inspection well cover meets the requirement of load bearing dynamics to the greatest extent. The manufactured mould structure of the inspection well cover provided with the structure can be a male and female combined mould. The male and female combined mould can be divided into an upper mould and a lower mould. The upper mould is convex and the lower mould is concave. The male and female combined mould is provided with a down pressing stroke structure and an air exhaust structure. Therefore, when manufactured, the novel inspection well cover can be solidified and molded with a pressure of 5 tons to 20 tons under ordinary temperature. Electricity is consumed when a vibrating platform is started. The power consumption is low. The structure guarantees that the manufactured inspection well cover has the advantages of uniform thickness, no pores and difficulty in generating rough edges.

Description

A kind of novel manhole cover

Technical field

The utility model relates to and is used for a kind of novel manhole cover that city road inspection shaft is built.

Background technology

Current, advanced composite material (ACM) inspection shaft lid is extensively adopted in the urban construction of some developed areas, efficiently solves the stolen difficult problem of former urban road cast iron inspection shaft lid, has reduced the unsafe hidden danger in a lot of cities.But current advanced composite material (ACM) inspection shaft lid is because its structural relation has brought following blemish in an otherwise perfect thing for production and product: the infusion of financial resources of first equipment mould in early stage is big, the advanced composite material (ACM) inspection shaft lid of original production generally uses the large-tonnage hydraulic press, and mould to occupy fund very big, will open a series of mould and occupy fund more than 1,000,000 yuan as the homogeneous, it is plain to have increased market risk system to enterprise.It two is that power consumption is big, the power consumption of the heating system of hydraulic press and mould is about 40 kilowatt hours, and generally at 4 more than the hydraulic press, the power consumption total amount is well imagined for small business, and current electric energy epitonos, the development to enterprise has very big restriction like this.Particularly its three, it is very big that the product bearing strength of design is pind down by mould, general mould structure reference standard CJ/T121-2000 " manhole cover made of composite material ", the heavy well lid supporting capacity of covering production like this is below 24 tons, and the very high urban road of some designing requirement just is difficult to reach requirement.

Summary of the invention

The purpose of this utility model is to provide for the deficiency that solves above-mentioned technology that a kind of bearing capacity is big, intensity is high, and can provide convenience and lack a kind of novel manhole cover that drops into to production.

In order to achieve the above object, a kind of novel manhole cover that the utility model is designed, it comprises well lid body and manhole cover base, well lid body bottom is the hemispherical circle, manhole cover base is made up of backing ring in seat ring, seat edge and the well lid, and backing ring is structure as a whole in seat ring, seat edge and the well lid.It is by inner sandwich layer, enhancement layer and outer the composition, and enhancement layer is located between inner sandwich layer and the skin.On the well lid body, be provided with anti-skidding line, word board and open hole.

The resulting a kind of novel manhole cover of the utility model, its well lid body Lower Half is the design of seat ring, seat edge and the interior backing ring of well lid of hemispherical circle and manhole cover base, farthest reach the requirement of carrying mechanics, the inspection shaft lid of this structure, its mould structure also just can be that negative and positive are in conjunction with mould, can divide upper die and lower die, patrix is protruding, counterdie is recessed, and design presses down stroke, exhaust structure, so just can be pressurized to 5-20 ton curing molding at normal temperatures when producing, electric energy consumption needs electricity consumption when having shock platforms to start, and power consumption is lower.This structure has guaranteed that the inspection shaft of making covers the thickness unification, pore-free, and the difficult overlap that produces, the bearing capacity of inspection shaft lid can increase or reduce as requested, and the glass fabric increase or the minimizing that need only at enhancement layer just can reach requirement.

Description of drawings

Fig. 1 is the utility model example structure schematic diagram;

Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1.

The specific embodiment

The utility model will be further described in conjunction with the accompanying drawings below by embodiment.

Embodiment 1

As shown in Figure 1 and Figure 2, a kind of novel manhole cover that present embodiment is described, it comprises well lid body 1 and manhole cover base 2, well lid body 1 bottom 6 is the hemispherical circle, manhole cover base 2 by seat ring 3, seat along 4 and well lid in backing ring 5 forms, seat ring 3, seat along 4 and well lid in backing ring 5 be structure as a whole, well lid body 1 or manhole cover base 2 can be made up of inner sandwich layer 10, enhancement layer 11 and skin 12, enhancement layer 11 is located between inner sandwich layer 10 and outer 12, is provided with anti-skidding line 7, word board 8 and open hole 9 on well lid body 1.

The novel manhole cover that present embodiment provides, its production method can be outer 12 can join the unsaturated polyester resin of curing compound, 10 parts of aerosils, 10 parts of calcium carbonate and 10 parts of short fibers by 70 parts and stir together, be coated with in the mould, coat glass fabric after the curing again.

Enhancement layer 11 is by 2 to 20 layers of glass fabrics, and 1 to 5 layer of glass mat is arranged, and joins curing compound brushing glass fiber and glass mat forms with 30 to 60 parts of unsaturated polyester resins.

40 to 80 parts of the quartz sands that inner sandwich layer 10 usefulness thicknesses differ, 10 to 30 parts in calcium carbonate, glass fiber mix stirring and add 6 to 20 parts of unsaturated polyester resins for 1 to 20 part, stir to add in the mould of having done glass fabric and pave, start shock platforms, treat that resin goes to the surface, unnecessary glass fabric is ploughed under, add 1 to 5 layer of glass mat, with the unsaturated polyester resin sized glass fibres felt for preparing curing compound, to be molded into counterdie on the material of resinizing in conjunction with 5 to 20 tons of pressurizations, about pressurize 40 minutes, treat depanning behind the products solidifying.

Claims

1, a kind of novel manhole cover, it comprises well lid body (1) and manhole cover base (2), it is characterized in that well lid body (1) bottom (6) is the hemispherical circle, manhole cover base (2) is made up of along backing ring (5) in (4) and the well lid seat ring (3), seat, and seat ring (3), seat are structure as a whole along backing ring (5) in (4) and the well lid.

2, a kind of novel manhole cover according to claim 1 is characterized in that it is made up of inner sandwich layer (10), enhancement layer (11) and outer (12), and enhancement layer (11) is located between inner sandwich layer (10) and the skin (12).

3, a kind of novel manhole cover according to claim 1 and 2 is characterized in that being provided with anti-skidding line (7), word board (8) and open hole (9) on well lid body (1).