CN202039385U - Environmental protection well cover - Google Patents

Abstract

The utility model discloses an environmental protection well cover, which comprises a framework and concrete poured on the framework. The framework includes a rib, a frame and two rings with different sizes, wherein the rings are concentric and connected through the rib, and the frame is connected with the large ring. With the annular framework structure, the environmental protection well cover is characterized by having strong bearing capacity, preventing thefts and being easy to open.

Description

A kind of environmental protection well cover

Technical field

The utility model relates to the well lid field, particularly, relates to a kind of environmental protection well cover.

Background technology

Manhole cover is the closure that leads to the top, access of underground installation, and the place of communal facilitieies such as every installation tap water, draining, telecommunications, electric power, combustion gas, heating power, fire-fighting, environmental sanitation just needs the installation check well, just needs well lid.The manhole cover that uses comprises casting pig well lid, common magnesium iron well lid, magnesium iron well lid with lock, cement well lid, glass fibre reinforced plastic manhole covers, regenerating resin combined manhole cover, novel environment friendly well lid at present, wherein casting pig well lid, common magnesium iron well lid, magnesium iron well lid supporting capacity with lock are strong, but owing to have recuperability, so often become the object of being stolen.Though and cement well lid, glass fibre reinforced plastic manhole covers, regenerating resin combined manhole cover generally all do not have recovery value, can not become the object of being stolen, all there is the shortcoming of supporting capacity difference in they.The novel environment friendly well lid is a kind of skeleton of bringing into use at Japanese the eighties initial stage concrete combined manhole cover (as Fig. 1,2) like the basin assembling structure, and its shortcoming is both thick heavy, opens very inconvenient.

The utility model content

The purpose of this utility model is to overcome the shortcoming and defect of above-mentioned prior art, provides a kind of supporting capacity strong, the antitheft novel environmental protection well cover of easily opening again.

The technical scheme that realizes above-mentioned purpose is as follows:

A kind of environmental protection well cover comprises skeleton and is cast in concrete on the skeleton that described skeleton comprises rib, frame and at least two annulus that differ in size, described each annulus with one heart, connect by rib, and described frame is connected with maximum annulus.

Further, described frame is connected for the right angle integral type with maximum annulus

Further, described rib is many, and is that the center evenly distributes radially with minimum annulus.

Further, described annulus is 3, and described rib is 8.

Further, described skeleton is provided with two lockholes.

The utility model mainly is strong and stressed uniform principle according to the circular configuration bearing capacity, designs the skeleton of loop configuration.

The force calculation method of environmental protection well cover is peripheral supported according to the well lid radius R, and the load on the radius r is evenly to distribute to consider (as Fig. 3).With following computational methods ring skeleton structure well lid being carried out intensity calculates:

T-load well lid thickness

σ-yield strength

μ-augmenting factor (0.27)

κ-impact coefficient (1.4)

W ₁-rear wheel rotation is than (0.4)

Compared with prior art, the utlity model has following beneficial effect:

1, on product composition, adopted the ring skeleton design, improved the bearing load ability of environmental protection well cover greatly, surpass the carrying standard of ductile iron well lid, the frivolous easy unlatching of overall structure.

2, on product performance, owing to adopt concrete pouring, no recovery value is thoroughly exempted stolen sorrow; Noiselessness, automobile ground no impact sound; Insulation and corrosion resistant, electric insulation, corrosion-resistant, Never-rusty; Low cost reaches that cost is low, load is high, beautiful effect attractive in appearance; Surface abrasion resistance, good weatherability; Energy-saving and emission-reduction only are 20% of casting iron well lid with the iron amount, have promptly saved the coal electricity, a large amount of again minimizings various discharge of harmful gases amounts.

3, with the part characteristic contrast of well lid in the market as following table:

Below by drawings and Examples, the technical solution of the utility model is described in further detail.

Description of drawings

Fig. 1 is the plan structure schematic diagram of novel environment friendly well lid skeleton in the prior art;

Fig. 2 is the side-looking structural representation of novel environment friendly well lid skeleton in the prior art;

Fig. 3 is that environmental protection well cover load of the present utility model calculates schematic diagram;

Fig. 4 is the structural representation of environmental protection well cover skeleton of the present utility model;

Fig. 5 is that A-A among Fig. 4 is to sectional view.

Among the figure: 1-small circle ring, annulus among the 2-, 3-large circle, 4-rib, 5-frame, 6-lockhole.

The specific embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in qualification the utility model.

Environmental protection well cover of the present utility model comprises ring skeleton and cast concrete thereon.As Fig. 4, shown in Figure 5, ring skeleton structure (is example with heavy well lid), comprise 3 annulus that differs in size (small circle rings 1, in annulus 2 and large circle 3), rib 4 (8) and frame 5, small circle ring 1, middle annulus 2, large circle 3 are provided with one heart, connect by rib 4, and frame 5 is connected for the right angle integral type with large circle 3, and its center rib 4 is that the center evenly distributes radially with small circle ring 1.Also be provided with two lockholes 6 on skeleton, lockhole 6 centre distances are carried out by the existing casting iron well lid standard of China.

For example: calculate by load to the utility model (is example with 700 heavy types):

(1), safe load P

Set: π=3.1416 σ=0.3% (ring skeleton yield strength) t=50

μ=0.27 (augmenting factor) r=100 R=350

$P=\frac{{\mathrm{\&pi;\&sigma;<figure-callout\; id="2"\; label="t"\; filenames="HDA0000055927420000013.png,HDA0000055927420000021.png"\; state="\{\{state\}\}">t</figure-callout>}}^2}{3\mathrm{\&mu;}(1-\frac{2r}{3R})}=\frac{23.562}{0.6557}=35.93$

That is: when utility model (well lid) thickness was 50 millimeters, safe load was 35.93 tons.

(2), rupture load M

Rupture load M=safe load P * 4=35.93 * 4=143.72

That is: when utility model (well lid) thickness was 50 millimeters, rupture load was 143.72 tons.

The design of ring skeleton considers according to stressed uniform spider web shape, decides the quantity of annulus and rib in the increase and decrease then according to load-carrying ability.

It should be noted that at last: the above only is preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims (5)

1. environmental protection well cover comprises skeleton and is cast in concrete on the skeleton, it is characterized in that described skeleton comprises rib, frame and at least two annulus that differ in size, described each annulus with one heart, connect by rib, and described frame is connected with maximum annulus.

2. environmental protection well cover according to claim 1 is characterized in that, described frame is connected for the right angle integral type with maximum annulus.

3. environmental protection well cover according to claim 1 and 2 is characterized in that described rib is many, and is that the center evenly distributes radially with minimum annulus.

4. environmental protection well cover according to claim 3 is characterized in that, described annulus is 3, and described rib is 8.

5. environmental protection well cover according to claim 4 is characterized in that, described skeleton is provided with two lockholes.

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