CN2362903Y

CN2362903Y - Novel manhole cover

Info

Publication number: CN2362903Y
Application number: CN 99230921
Authority: CN
Inventors: 谭毅
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-02-04
Filing date: 1999-02-04
Publication date: 2000-02-09
Anticipated expiration: 2009-02-04

Abstract

The utility model relates to a manhole cover which is composed of a steel bar framework, a glass fiber cloth and filling materials. The utility model is characterized in that the steel bar framework is composed of at least three annular steel bars with different sizes, and at least four steel bars are welded at the center of an inner ring. At least eight steel bars are radially welded on three rings, and the steel bar framework and the glass fiber cloth are buried in the filling materials. Anti-skid slots, marks and signs are stamped on the right side of the manhole cover, and two or more than two cambered reinforcing ribs are respectively welded on the steel bar rings at the back side of the manhole cover. The utility model has the characteristics of bend resistance, corrosion resistance, wear resistance, good stability, good ageing resistant performance, etc., and the utility model does not deform.

Description

Novel manhole cover

The utility model relates to a kind of inspection shaft lid, checks that especially for underground pipelines such as feedwater, draining, fire-fighting, communications the inspection shaft on the well head covers.

The inspection shaft lid of present common use is still made by cast iron, it has the advantage of intensity height and good endurance, but,, lose dawn generation personal injury accident easily just when failing again in time to augment in case well lid occurs so the stolen phenomenon of well lid often takes place because cast iron can melt down and make other products again.The way stolen in order to prevent, that taking of having locks between casting iron well lid and walling crib, but anti-theft effect is unsatisfactory also can take place and can't open too for a long time as the time because of corrosion.Employing steel concrete that also has or glass are that main material is made the inspection shaft lid, though because of no regeneration is worth unmanned the pilferage, but the well lid intensity with concrete for making is not high, the well lid edge easily produces broken slump phenomenon, and be that the well lid that material is made can be too light because of weight with glass-fiber reinforcement, poor stability, vehicle by the time easily to produce string moving, even can have been rolled and broken away from walling crib.Besides the inspection shaft lid distortion of making of thermoset phenolic resin and breeze and involving great expense, so stolen desirable yet solution of essence of inspection shaft lid.

The purpose of this utility model is at shortcoming of the prior art, provides a kind of to the public and makes filler with wastes of crops, the novel manhole cover of intensity height, good stability, pilferage durable in use and unmanned.

The technical solution of the utility model is finished like this:

The utility model inspection shaft lid, by cage of reinforcement, glass cloth and filler constitute, it is characterized in that cage of reinforcement is made up of the steel hoops of three different sizes at least, at at least 4 reinforcing bars of interior ring center welding, and be radial at least 8 reinforcing bars that weld on three rings, cage of reinforcement and glass cloth are embedded among the filler, and be pressed with anti-slip tank and tag mark in its front, on its reverse side steel ring, be welded with reinforcing rib curved more than two or two respectively.

Described novel manhole cover is characterized in that filler is made up of wastes of crops, ore deposit soil stone flour, glass cloth.

Described novel manhole cover is characterized in that wastes of crops is meant one or more composition of straw stalk, straw, not plump stalk, wood chip.

Described novel manhole cover, the ore deposit that it is characterized in that soil stone flour are meant by magnesium chloride, magnesia, calcium carbonate, Peng Run soil, French chalk, and add reinforcing agent etc. therein and form.

Described novel manhole cover is characterized in that also being covered with one deck enhancement layer in the bottom filling of cage of reinforcement layer.

The utility model is through various truck repetition tests, product does not have distortion, have characteristics such as counter-bending, corrosion resistant, wear-resisting, good stability and ageing resistace be good, and except being difficult to take out the value that does not more have recycling the reinforced frame, so do not become stolen target, fundamentally solving stolen problem, is a kind of desirable replacement product of present casting iron well lid.And novel manhole cover is to be primary raw material with the wastes of crops, so cause environment pollution can avoid burning wastes of crops as rice straw, straw, wood chip, not plump stalk etc. the time, shape is rung the healthy of people, even shape is rung normally taking off and land to aircraft.

Below in conjunction with accompanying drawing the utility model embodiment is described, the utility model is not limited to the described embodiment of accompanying drawing.

Fig. 1 is a hierarchical structure schematic diagram of the present utility model.

Fig. 2 is the utility model reinforced frame spread geometry schematic diagram.

Wherein 1, (ore deposit soil stone flour, wastes of crops) filler; 2, upper strata glass cloth; 3, reinforcement bar; 4, enhancement layer; 5, lower floor's glass cloth; 6, reinforcing rib; 7, steel hoop circle; 8, filler; 9, interior ring reinforcing bar center pad.

The upper strata of inspection shaft lid is crops, ore deposit soil stone powder filler (1) as shown in Figure 1, lower floor is other filler (8), in this layer filler, be embedded with cage of reinforcement shown in Figure 2 (3), in the filler up and down of cage of reinforcement (3), all be covered with glass cloth (2), (5), and be covered with the enhancement layer (4) that contains reinforcing agent, be connected on curved reinforcing rib (6) on the steel ring for 2 root beads are arranged at the inspection shaft lid bottom of gaining in strength.

Fig. 2 is the cage of reinforcement spread geometry schematic diagram in the hierarchical structure shown in Figure 1, three steel hoop circles (7) are wherein arranged, be welded with 4 reinforcement bars (3) at interior ring center, on the ring, encircle on the reinforcing bar center pad (9) in the other end is welded in every reinforcement bar one end is welded on.On three steel hoop circles (7), be radial 8 reinforcement bars (3) that are welded with in addition.

Claims

1, a kind of novel manhole cover, by cage of reinforcement, glass cloth and filler constitute, it is characterized in that cage of reinforcement is made up of the steel hoops of three different sizes at least, at at least 4 reinforcing bars of interior ring center welding, and be radial at least 8 reinforcing bars that weld on three rings, cage of reinforcement and glass cloth are embedded among the filler, and be pressed with anti-slip tank in its front, on its reverse side steel ring, be welded with reinforcing rib curved more than two or two respectively.

2, novel manhole cover according to claim 1 is characterized in that filler is made up of wastes of crops, ore deposit soil stone flour, glass cloth.

3, novel manhole cover according to claim 2 is characterized in that wastes of crops is meant one or more composition of straw stalk, straw, not plump stalk, wood chip.

4, novel manhole cover according to claim 2 is characterized in that heavy mineral powder is meant magnesium chloride, magnesia, calcium carbonate, Peng Run soil, French chalk, and adds reinforcing agent therein and form.

5, novel manhole cover according to claim 1 is characterized in that also being covered with one deck enhancement layer in the bottom filling of cage of reinforcement layer.