RU67117U1 - HATCH COVER (OPTIONS) - Google Patents

Abstract

The utility model relates to manhole covers - sewer or inspection - and can be used in public utilities. The task is to simplify the design while reducing its cost and increasing the safety of its operation. In the first embodiment (Fig. 1, 2), the manhole cover 1 is made by pressing from a polymer-sand composition consisting of 15-17% secondary polymer, 82.9-84.9% sand and 0.1% dye, and its frame 2 is made in the form of a rectangular lattice of metal rods. In the second embodiment (figure 3), the manhole cover 1 is made in the form of a single pressed structure from a polymer-sand composition consisting of 15-17% of secondary polymer, 82.9-84.9% of sand and 0.05-0.15% dye, and its frame 2 is made in the form of stiffeners from the same polymer-sand composition. In the third embodiment (Fig. 4), the manhole cover 1 is made by pressing from a polymer-sand composition consisting of 15-17% secondary polymer, 82.9-84.9% sand and 0.05-0.15% dye. In the first embodiment, pressing the manhole cover onto a small metal frame in the form of a rectangular lattice of rods filled with a polymer-sand composition consisting of 15-17% of polymer that has lost its consumer properties, 82.9-83.9% of sand and 0.05- 0.15% of the dye, provides a simple, durable and inexpensive design. The implementation in the second embodiment of the lid in the form of a single structure by pressing the carcass and filling it out from a polymer-sand composition containing 15-17% of polymer that has lost its consumer properties, 82.9-84.9% - sand and 0.1% dye in conjunction with the carcass in the form of stiffeners from the same composition allows you to get a fairly simple strong and cheap design that does not represent the temptation for thieves.

In the third embodiment, the execution of the manhole cover in the form of a single structure by pressing from a polymer-sand composition containing 15-17% of polymer that has lost its consumer properties, 82.9-84.9% of sand and 0.05-0.15% of the dye allows to obtain a simple , strong enough and cheap design which is not a temptation for thieves. 6 pf, 4 ill.

Description

The utility model relates to manhole covers - sewer or inspection - and can be used in public utilities.

As you know, at present, especially in our country, cases of embezzlement of metal covers of inspection and sewer manholes for putting them into scrap are becoming very common. Such theft leads to an increase in the number of accidents with people and accidents with vehicles. The only way to prevent theft and prevent injuries and accidents is the manufacture of these covers from non-metallic materials, for which there are a sufficient number of examples.

So, the hatch is known, described in s. No. 98113709. by class E02D 29/14, z. 12.16.1995 (VBR), s. 06/07/1998 (RF), op. 04/20/2000 g

The known lid contains a top and a base, limiting the space between each other, and reinforcing walls extending from the central region of the lid between the top and the base, forming cavities between each other, and the top, base and reinforcing walls are made of fiberglass-reinforced plastic material or carbon or composite material . The cover has a round or rectangular shape.

A disadvantage of the known lid is the complexity of the design and the high cost of its manufacture due to the use of carbon or composite material.

Known manhole cover described in St. RF №32141 "Manhole inspection hole" according to cl. E02D 29/12, 29/14, E03F 5/02, c. 03/07/03., Op. 09/10/2003. Known cover contains a reinforcing cage of the outer and inner rings of sheet metal and steel rods rigidly connected to it. forming the lower and upper zones, filled with non-metallic binder material, which are used as concrete, polymer concrete, fiber concrete, polymer compositions, etc. materials.

A disadvantage of the known lid is the complexity of its manufacture and insufficient strength, due respectively to the complexity of manufacturing the frame of their two rings - external and internal, interconnected by radial rods, and the manufacturing technology by casting (i.e. casting). In addition, concrete, polymer concrete, fiber-reinforced concrete are quite expensive materials, and a significant amount of metal in the cover reinforcement can also be a temptation for thieves.

Closest to the technical nature of the claimed is the manhole cover described in paragraph. Of the Russian Federation No. 34948 "Manhole cover manhole" according to cl. E02D 29/14, 29/12, c. 08/11/03. op. 12/20/03 and selected as a prototype. The known cover includes annular ribs on its outer surface and ears located around the perimeter, and is made of a metal frame in the form of a disk located in its center with holes, radial rays connecting the disk with a bordering circle, and filled with thermoplastic material to a given shape and size .

A disadvantage of the known cover is the design complexity due to the complexity of manufacturing a metal frame - in the form of a disk with holes and radial rays connecting the disk with a bordering circle. In addition, a significant metal content in the lid can also be a temptation for vandal robbers.

The task is to simplify the design while reducing its cost and increasing the safety of its operation.

The problem is solved in that:

- in the first embodiment, the manhole cover. equipped with ears and containing a metal reinforcement cage filled with polymer material, ACCORDING TO THE USEFUL MODEL, made by pressing from a polymer-sand composition consisting of 15-17% of polymer that lost its consumer properties, 82.9-84.9% of sand and 0.05 -0.15% of the dye, and its frame is made in the form of a rectangular lattice of metal rods;

- in the second embodiment, the manhole cover, equipped with ears and containing a reinforcing cage filled with a polymer material. ACCORDING TO THE USEFUL MODEL, made in the form of a single structure by pressing the frame and filling it out of a polymer-sand composition consisting of 15-17%

having lost the consumer properties of the polymer, 82.9-84.9% of sand and 0.05-0.15% of the dye, and its frame is made in the form of stiffeners from the same polymer composition

In this case, the frame can be made in the form of annular or radial or annular and radial stiffeners.

- in the third version, the manhole cover, which includes polymeric material, characterized by the fact that it is made in the form of a single pressed structure from a polymer-sand composition, consisting of 15-17% of polymer that has lost its consumer properties, 82.9-84.9% sand and 0.05-0.15% of the dye.

In the first embodiment, pressing the manhole cover onto a small metal frame in the form of a rectangular lattice of rods filled with a polymer-sand composition consisting of 15-17% of polymer that has lost its consumer properties, 82.9-83.9% of sand and 0.05- 0.15% of the dye, provides a simple, durable and inexpensive design.

The implementation in the second embodiment of the lid in the form of a single structure by pressing the carcass and filling it out from a polymer-sand composition containing 15-17% of polymer that has lost its consumer properties, 82.9-84.9% - sand and 0.1% dye in conjunction with the carcass in the form of stiffeners from the same composition allows you to get a fairly simple strong and cheap design that does not represent the temptation for thieves.

In the third embodiment, the execution of the manhole cover in the form of a single structure by pressing from a polymer-sand composition containing 15-17% of polymer that has lost its consumer properties, 82.9-84.9% of sand and 0.05-0.15% of the dye allows to obtain a simple , strong enough and cheap design which is not a temptation for thieves.

EFFECT: obtaining a simple, cheap construction that is not a temptation for metal plunders.

The inventive manhole cover has a novelty in comparison with the prototype, differing from it by such significant features as:

- in the first embodiment, by extrusion of a polymer-sand composition consisting of 15-17% of secondary polymer, 82.9-84.9% of sand and 0.05-0.15% of dye, and making the frame in the form of a rectangular lattice of metal rods, ensuring the achievement of a given result:

- in the second embodiment - the implementation in the form of a single extruded structure of a polymer-sand composition consisting of 15-17% secondary polymer, 82.9-84.9% sand and 0.1% dye, ensuring the achievement of a given result;

- in the third embodiment, the manufacture of the cover by pressing from a polymer-sand composition containing 15-17% of the polymer that has lost its consumer properties, 82.9-84.9% of sand and 0.05-0.15% of the dye, ensuring the achievement of the desired result.

The inventive manhole cover in all variants of its implementation can be widely used in utilities and road construction, and therefore meets the criterion of "industrial applicability".

The utility model is illustrated by drawings, which show:

- figure 1 is a top view of the lid with a partial section in the first embodiment;

figure 2 - General view of the frame for the first embodiment;

figure 3 is a top view of the cover with a partial section in the second embodiment;

- figure 4 is a view of the cover in the third embodiment.

In the first embodiment (Fig. 1, 2), the manhole cover 1 is made by pressing from a polymer-sand composition consisting of 15-17% secondary polymer, 82.9-84.9% sand and 0.1% dye, and its frame 2 made in the form of a rectangular lattice of metal rods.

At the same time, at first, a metal frame 2 is made from the rod (Fig. 2), which consists of four rods 3 overlapping in the form of a lattice with lugs 4 at the ends, and the lugs 4 are opposite at the ends of the rods 3 (from the top, from the bottom, lower rods - above), and the ends of the two lower rods 3 are interconnected by two plates 5 with holes 6 in them. Pressing is carried out in 2-3 steps (not shown in the drawings). First install the frame 2 in

a releasable mold, in which then a polymer-sand composition of the above composition is laid in the amount of ½ of the volume of the product and pressed. Then add polymer-sand composition to the full volume of the product and compress it again. Then turn on the cooling system until the product solidifies completely and hold for 5-7 minutes. Next, the product (manhole cover) is removed from the mold and put on a flat surface until it cools completely.

In the second embodiment (figure 3), the manhole cover 1 is made in the form of a single pressed structure from a polymer-sand composition consisting of 15-17% of secondary polymer, 82.9-84.9% of sand and 0.05-0.15% dye, and its frame 2 is made in the form of stiffening ribs 3 from the same polymer-sand composition. The ribs 3 can be made annular, radial, or both annular and radial (Fig. 3) from the upper and lower sides of the cover 1.

The manufacture of the cover is as follows. First, a polymer-sand composition of the above composition in the amount of ½ of the volume of the product is pressed and pressed into a releasable mold having depressions, depending on the type of stiffeners, in the form of annular or radial or annular and radial grooves. Then add the mass to the full volume of the product and compress it again. Next, include a cooling system for solidification of the product and stand for 5-7 minutes. They take the product out of the mold and lay it on a flat surface until it completely hardens.

In the third embodiment, the manhole cover 1 is molded from a polymer-sand composition consisting of 15-17% secondary polymer, 82.9-84.9% sand and 0.05-0.15% dye. It is made in two or three steps as follows. In a split mold, a polymer-sand mass of the specified composition is laid in an amount of ½ of the volume of the product and pressed. Then make a backfill of the mass to the full volume of the product and again pressed. Turn on the cooling system to freeze the product and stand for 5-7 minutes. Then remove the cover from the mold and lay it on a flat surface until completely solidified.

The manhole cover in all variants of its implementation is manufactured by the method and on the production line described respectively in patent No. 2206452.

The dimensions of the cover in both versions are selected according to the current GOST to ensure the completion of hatches.

Compared with the prototype of the inventive manhole cover in both its variants is simpler in design, cheaper and safer to use.

Claims (6)

1. A manhole cover equipped with ears and containing a metal frame filled with plastic material, characterized in that it is made by pressing from a polymer-sand composition consisting of 15-17% of polymer that has lost its consumer properties - 82.9-84.9% of sand and 0.05-0.15% of the dye, and its frame is made in the form of a rectangular lattice of metal rods. 2. Manhole cover. equipped with ears and containing a frame filled with plastic material, characterized in that it is made in the form of a single structure by pressing the frame and filling from a polymer-sand composition consisting of 15-17% of polymer that has lost its consumer properties - 82.9-84.9% sand and 0.05-0.15% of the dye, and its frame is a stiffener from the same polymer-sand composition. 3. Manhole cover according to claim 2, characterized in that its frame consists of annular stiffeners. 4. Manhole cover according to claim 2, characterized in that its frame consists of annular and radial stiffeners. 5. Manhole cover according to claim 2, characterized in that its frame consists of radial stiffeners. 6. A manhole cover containing plastic material, characterized in that it is made in the form of a single extruded structure of a polymer-sand composition, consisting of 15-17% of polymer that has lost its consumer properties, 82.9-84.9% of sand and 0.05 -0.15% dye.