CN2198309Y - Man hole cover for polymer concrete inspection well - Google Patents

Abstract

The utility model relates to a well cover for polymer concrete inspection well, which can be used for various well mouths of the pipe inspection wells and is mainly made of polymer concrete material. The surface of the utility model is provided with gripping pattern and a pre-buried steel bar drop handle, and the back face of the utility model is provided with a radial reinforced rib in a cross shape or like the Chinese character 'jing'. The middle or the bottom surface of the reinforced rib is enhanced by steel bars or glass fibre reinforced plastics, and short fibre, woven fibre or steel wire nets can be mixed into the concrete to carry out enhancement. The utility model has the advantages of high bearing capacity, light weight, low cost, steel product saving, simple production process, etc., avoids losing, economic losses and various safety accidents caused by well cover losing, and can be widely used in various well mouths of the pipe inspection wells.

Description

Man hole cover for polymer concrete inspection well

The utility model is a kind of polymer concrete manhole well lid, can be widely used on the various pipe manhole well heads such as water supply, sewage, heating power, electric power, telecommunication, coal gas, fire-fighting in road and other place.It is a kind of desirable casting iron well lid substitute.

Traditionally, various pipe manhole well lids, generally all cylinder iron material make, yet in recent years, because cast iron materials is in short supply, price is higher, caused the well lid cost higher, main is cast iron double-edged fine-toothed comb to lose phenomenon more and more serious, therefore to have developed with concrete or fibre reinforced concrete be the well lid of material of main part in some unit, but because ordinary concrete intensity is low, fragility is big, though and fibre reinforced concrete has increased concrete toughness to a certain extent, but other performance improvement is also few, uses needs so in fact this double-edged fine-toothed comb is difficult to satisfy.

The purpose of this utility model is exactly the shortcoming that overcomes existing concrete manhole well lid, provides a kind of structure new, the polymer concrete manhole well lid that functional performance is good.

The technical solution of the utility model is achieved in that

Polymer concrete manhole well lid is made up of lid, bearing and drop handle, and the material of main part that its special character is to make well lid is a polymer concrete.The surface of lid is provided with anti-skid design and drop handle is housed, and that the back side is provided with is cross, intersecting parallels or radial ribs, and in the rib or the back side strengthens with reinforcing bar or glass-reinforced plastic material.In order further to strengthen toughness, also can add various short fibers or braided fiber in the polymer concrete, gauze wire cloth strengthens.

The utility model is compared with existing various well lids has the bearing capacity height, and the compressive strength of polymer concrete generally can reach 80-150MPa, and other performance also all significantly improves than ordinary concrete, thereby the use that has guaranteed this well lid is safer.The production technology of this well lid is fairly simple, equipment investment is few, and can not lose, thereby has reduced the economic loss of administrative department, has prevented because well lid is lost the various security incidents of bringing.

Now describe the utility model most preferred embodiment in conjunction with the accompanying drawings in detail:

Fig. 1 is the vertical view of polymer concrete manhole well lid.

Fig. 2 is the sectional drawing of polymer concrete manhole well lid.

1 lid among the figure, 2 bearings, 3 ribs, 4 drop handles, 5 decorative patterns.

A kind of polymer concrete manhole well lid as shown in Figure 1, 2, it is made up of lid 1, bearing 2, drop handle 3, lid 1 adopts resin concrete material to make, here used resin concrete is formulated by coarse aggregate, sand, filler, resin or monomer and various additive, the maximum particle diameter of coarse aggregate is advisable to be no more than 20mm, and the consumption of resin or monomer is no more than 15%.The surface of lid is provided with the anti-skid design 5 of compacting and pre-buried reinforcing bar drop handle 4, and the back side is provided with intersecting parallels ribs 3, is furnished with reinforcing steel bar in the ribs 3.

The also available high-strength polymer cement concrete of resin concrete in the technical scheme replaces, concrete intensity is advisable to be not less than 80MPa, for improving concrete toughness, also can mix various short fibers in the process for preparation or strengthen in the ribs also with braided fiber, gauze wire cloth can be without reinforcing steel bar, and strengthens with glass-reinforced plastic material in the bottom of rib.

Because the excellent properties of polymer concrete has determined the combination property of this well lid will obviously be better than other various forms of concrete inspection well well lids.

Claims (3)

1, a kind of polymer concrete manhole well lid, the material of main part that comprise lid, bearing, drop handle, it is characterized in that making this well lid is a polymer concrete, cover 1 surface and be provided with anti-skid design 5 and pre-buried reinforcing bar drop handle, the back side is provided with cross or groined type, radial ribs 3.

2, well lid according to claim 1 is characterized in that being furnished with reinforcing steel bar in the ribs 3 or the bottom strengthens with glass-reinforced plastic material.

3, well lid according to claim 1 is characterized in that making and covers 1 polymer concrete and mainly refer to resin concrete and high-strength polymer cement concrete, also can mix various short fibers or braided fiber in the concrete, gauze wire cloth strengthens.