CN2182822Y

CN2182822Y - Cover for inspection manhole made of glass fibre reinforced plastic

Info

Publication number: CN2182822Y
Application number: CN 94226577
Authority: CN
Inventors: 陈国伟; 黄雪芳
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-01-15
Filing date: 1994-01-15
Publication date: 1994-11-16
Anticipated expiration: 2004-01-15

Abstract

The utility model relates to a cover for an inspection manhole made of glass fibre reinforced plastic, which is suitable for a water supply inspection well, a sewer inspection well, a rain water inspection well and a fire protection inspection well. The utility model is composed of a main body (6) made of glass fibre reinforced plastic, structural reinforcing ribs (3) and a steel skeleton (4), wherein, the structural reinforcing ribs (3) are uniformly arranged at the bottom surface of the main body (6); the steel skeleton (4) is lined in the main body (6) and the structural reinforcing ribs 3. The utility model has the advantages that the structure is simple; practice is easy, and a large amount of cast iron can be saved. Besides, the utility model has better function of theft protection because glass-reinforced plastic material does not have reconstituted characteristic.

Description

Cover for inspection manhole made of glass fibre reinforced plastic

The utility model relates to a kind of fiber glass reinforced plastics inspection well lid, is mainly used in public utility.

Domestic general employing cast iron, concrete or steel concrete are made manhole cover at present, abroad then based on cast iron.Because concrete and steel concrete system manhole cover are subjected to force intensity inhomogeneous, after using a period of time, manhole cover and walling crib edge can produce serious slump sight and resemble (particularly evident when using) on the fast traffic lane, directly influence result of use, promptly need rebuild replacing in general one to two year.Though cast iron manhole cover intensity and durability are all better, there is well-known stolen phenomenon.Although anti-theft measure such as adopt that latch, iron chains lock, effect is all undesirable, fails fundamentally to solve stolen problem.

The purpose of this utility model is exactly on the basis that guarantees working strength and corrosion resistant life requirement, adopts glass fiber reinforced plastic to make manhole cover, and that utilizes glass-reinforced plastic material can not reproducing property solve antitheft problem.

For achieving the above object, the utility model adopts following technical scheme: the glass fiber reinforced plastic that employing can not be reproduced is as the manhole cover body, and the inner lining steel skeleton also is aided with structural bead.

The utlity model has following advantage:

(1) compares with casting iron well lid and can save a large amount of cast irons;

(2) manufacture craft is simple;

(3) have better working strength and corrosion resistant durability

That (4) utilizes glass-reinforced plastic material can not reproducing property, can reduce the stolen possibility of manhole cover greatly, promptly has antitheft effect.

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is a front schematic view of the present utility model.

Fig. 2 is a schematic bottom view of the present utility model.

Fig. 3 is the sectional view of Fig. 1 along A-A.

Fig. 4 is the sectional view of Fig. 2 along B-B.

Referring to each accompanying drawing.The utility model is made of glass steel body 6, structural bead 3 and steel frame 4.Body 6 fronts have covers hole 2 and anti-slip tank 5, and leaves sign space 1.Lid hole 2 can be Any shape, and its quantity is generally 2, also can depend on the needs, and opens well lid when being used to overhaul.Anti-slip tank 5 is generally grid-like, can optionally be other Any shape also.Sign space 1 also can be Any shape, is used to mark the kind of manhole cover.

3 equidistant background 6 bottom surfaces (as shown in Figure 2) that are evenly distributed on of structural bead, quantity is more than 2.

Steel frame 4 linings are welded (referring to Fig. 3,4) by round steel in body 6 and structural bead 3, also can adopt other shaped steel, are used to strengthen the stiffness of body 6, and its shape and body 6 and structural bead 3 adapt.

The utility model adopts hand pasting forming.At first coat release agent coating on mould, be coated with the surperficial gel coating resin of one deck high resin content again, thereafter successively coated with glass fiber reinforced plastic, serve as a contrast during certain thickness into steel frame, be coated with repeatedly with glass fiber reinforced plastic again, until reaching required thickness, the demoulding gets final product behind the cure under pressure.

Manhole cover described in the utility model is applicable to various manholes such as feedwater manhole, sewage manhole, rainwater inspection well and fire-fighting manhole.

Claims

1, a kind of fiber glass reinforced plastics inspection well lid comprises body 6, steel frame 4 and structural bead 3, it is characterized in that steel frame 4 linings in body 6 and structural bead 3, and structural bead 3 is distributed on body 6 bottom surfaces, and quantity is more than 2.

2, fiber glass reinforced plastics inspection well covers according to claim 1, it is characterized in that body 6 fronts have anti-slip tank 5, and it is shaped as grid-like, also can be other Any shape.