CN2740671Y

CN2740671Y - Wear and pressure resistant composite manhole cover

Info

Publication number: CN2740671Y
Application number: CN 200420096909
Authority: CN
Inventors: 李顶忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-09-20
Filing date: 2004-09-20
Publication date: 2005-11-16
Anticipated expiration: 2014-09-20

Abstract

The utility model provides a wear and pressure resistant composite manhole cover which cross section presents a lamellar structure which is composed of a frame, a central packing layer, an upper intermediary layer, a lower intermediary layer, an upper surface packed layer, and a lower surface packed layer from the center to the upper and the lower outside. The frame of the manhole cover is formed by a ball milling cast-iron which is arranged in an ' I ' shape. The packing layer is formed by the mixtures of styrene, polystyrene, silica powder, glass fiber, heat solidification resin, calcium hydroxide, zinc stearate, curing agent, and antiaging agent. The upper intermediary layer and the lower intermediary layer are formed by a plurality of alkali gridding cloth. The upper surface of the manhole cover is level, and the lower surface of the manhole cover presents a frame shape which is arranged in an ' I ' shape. The utility model solves the problems of low carrying capacity, and poor stiffness and anti-aging performance, which exists in the present composite manhole cover.

Description

A kind of wear-resisting withstand voltage combined manhole cover

Technical field

The utility model relates to a kind of well lid, particularly relates to a kind of wear-resisting withstand voltage combined manhole cover.

Background technology

Existing combined manhole cover mostly adopts unsaturated-resin, reinforcing bar, filler with husky, stone, is made by handwork, and the wear-resisting withstand voltage properties of such well lid is relatively poor, and application life is shorter, has potential safety hazard.

The utility model content

The purpose of this utility model is that a kind of wear-resisting withstand voltage combined manhole cover will be provided, and its surface layer is tough and tensile smooth, and is anti-aging, and the resistance to compression shock strength is good, and automobile ground silent, and cost is lower, long service life.

A kind of wear-resisting withstand voltage combined manhole cover described in the utility model, its cross section is bedded structure, it from the center to two appearances up and down successively by skeleton, center packed layer, go up intermediary layer, intermediary layer, upper surface packed layer, soffit packed layer constitute down, it is characterized in that: the skeleton of described well lid is the nodular cast iron of " worker " word grillages row; Packed layer is the mixture of styrene, polystyrene, quartz powder, glass fiber, heat reactive resin, calcium hydroxide, zinc stearate, curing compound, age resistor; Last intermediary layer and following intermediary layer are alkali grid cloth in the several layers.

In order to make described well lid lighter, and save raw material, described well lid upper surface is smooth, and soffit is " worker " word grillages row frame shapes.

The beneficial effects of the utility model are that it is low that it has solved existing combined manhole cover supporting capacity, the problem of rigidity and anti-old poor performance.

Description of drawings

Fig. 1 is the utility model top perspective view.

Fig. 2 is the utility model face upwarding stereogram.

Fig. 3 is a cut-away view of the present utility model.

Fig. 4 is i.e. " worker " word lattice nodular cast iron schematic diagram of skeleton of the present utility model.

Wherein: 1. soffit packed layer, 2. descend intermediary layer, 3. skeleton 4. center packed layers are 5. gone up intermediary layer, 6. the upper surface packed layer.

Specific embodiment

A kind of wear-resisting withstand voltage combined manhole cover described in the utility model as Fig. 1, Fig. 2 and shown in Figure 3, is put into 3-4 layer alkali grid cloth earlier on heating mould, be down intermediary layer 2; Pour a certain amount of mixture into, partially mixed thing can infiltrate soffit packed layer 1; Put into skeleton 3 in the center of well lid thickness, i.e. " worker " word lattice nodular cast iron; Pour the capacity mixture again into, be center packed layer 4; Repave alkali grid cloth in the layer 2-3, promptly go up intermediary layer 5; Pour a certain amount of mixture again into, and levelling, be upper surface packed layer 6.Mold heated to 120 ℃ then, and with 300 t hydraulic press extrusion formings.

The diameter of well lid is 75cm, and the thickness of well lid is 6.5cm, and the thinnest part of well lid is 2.5cm.

The dosage of each well lid packed layer mixture is: 2.8 kilograms of styrene, 2.5 kilograms of polystyrene, 50 kilograms of quartz powders, 10 kilograms of glass fiber, 10 kilograms of heat reactive resins, 0.2 kilogram in calcium hydroxide, 1.2 kilograms of zinc stearates, curing compound, age resistor, colorant a little.

Skeleton adopts " worker " word lattice nodular cast iron, makes well lid have more bearing capacity; Alkali grid cloth during intermediary layer adopts makes that connection is tightr between each layer of well lid; Adopt heating mould to heat and extrusion forming, make that the chemical reaction of mixture is more abundant, have more cohesive force and crushing resistance.

Claims

1. wear-resisting withstand voltage combined manhole cover, its cross section is bedded structure, it from the center to two appearances up and down successively by skeleton, center packed layer, go up intermediary layer, intermediary layer, upper surface packed layer, soffit packed layer constitute down, it is characterized in that: the skeleton of described well lid is the nodular cast iron of " worker " word grillages row; Packed layer is the mixture of styrene, polystyrene, quartz powder, glass fiber, heat reactive resin, calcium hydroxide, zinc stearate, curing compound, age resistor; Last intermediary layer and following intermediary layer are alkali grid cloth in the several layers.

2. a kind of wear-resisting withstand voltage combined manhole cover according to claim 1, it is characterized in that: described well lid upper surface is smooth, and soffit is " worker " word grillages row frame shapes.