CN219060132U - Nodular cast iron resin composite municipal well lid - Google Patents

Abstract

The utility model discloses a nodular cast iron resin composite municipal manhole cover, which comprises a main cover made of nodular cast iron material, a water outlet is arranged on the main cover, and an outer ring body. The body is made of resin material, the main cover is located inside the outer ring body, a ring of flanges is arranged under the outer ring body, and a distance of 3-5 cm is set between the flange and the inner side and the outer edge of the outer ring body , a reinforcing rib with a triangular cross-section is provided between the outer surface of the flange and the lower surface of the outer ring body. During the installation process, the reinforcing rib is squeezed and deformed, thereby forming a large friction force with the side wall of the counterbore, and fixing the well cover as a whole. At this time, manpower is difficult to remove the well cover from the counterbore, which reduces the situation that the well cover is stolen. In addition, due to the existence of the resin outer ring, the reinforcing rib can also play a buffer role, and the metal part of the manhole cover does not directly collide with the site, which greatly reduces the noise generated.

Description

Ductile Iron Resin Composite Municipal Manhole Cover

technical field

The utility model relates to the technical field of municipal engineering, in particular to a nodular cast iron resin composite municipal manhole cover.

Background technique

Ductile iron manhole cover is a kind of ductile iron products. Nodular cast iron obtains nodular graphite through spheroidization and inoculation treatment, which effectively improves the mechanical properties of cast iron, especially improves plasticity and toughness, so as to obtain higher strength than carbon steel.

Existing municipal ductile iron manhole covers are generally installed directly on the ground. When a vehicle rolls over, the manhole cover will often collide with the ground, resulting in relatively loud noises, and the manhole cover can be directly pried off from the counterbore, which is easy to be damaged. Steal,.

Utility model content

The technical problem to be solved by the utility model is to solve the above-mentioned deficiencies in the prior art, and provide a nodular cast iron resin composite municipal manhole cover with less noise and anti-theft.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a composite municipal manhole cover made of graphite cast iron resin, including a main cover body, the main cover body is made of ductile iron material, and the main cover body is provided with a drain port, It also includes an outer ring body, the outer ring body is made of resin material, the main cover is located inside the outer ring body, a ring of flanges are arranged under the outer ring body, and the flanges are connected to the inner and outer edges of the outer ring body There is a distance of 3-5 cm between them, and a reinforcing rib with a triangular cross section is arranged between the outer surface of the flange and the lower surface of the outer ring body.

Further, a plurality of inwardly extending soft limiting pieces are provided on the bottom surface of the flange.

Further, two notches are provided on the edge of the main cover for disassembly, and the notches are provided under the outer ring for hiding.

Further, a filter screen is provided at the drain hole, and a grid for protecting the filter screen is provided above the filter screen, and the filter screen is detachably mounted on the main cover through screws.

From the above technical solution, it can be seen that the utility model has the following advantages: During the installation process, the reinforcing rib is squeezed and deformed, thereby forming a relatively large frictional force with the side wall of the counterbore, and fixing the well cover as a whole. At this time, manpower is difficult to remove the well cover from the counterbore, which reduces the situation that the well cover is stolen. In addition, due to the existence of the resin outer ring, the reinforcing rib can also play a buffer role, and the metal part of the manhole cover does not directly collide with the site, which greatly reduces the noise generated.

Description of drawings

Fig. 1 is the front structural representation of the utility model;

Fig. 2 is the reverse structural representation of the utility model;

Fig. 3 is a schematic diagram of the structure of the outer ring body in the utility model.

Detailed ways

Below in conjunction with accompanying drawing, specific embodiment of the utility model is described in detail.

As shown in Figure 1-3, the ductile iron resin composite municipal manhole cover of the present utility model includes a main cover body 4, on which a drainage port is arranged, the main cover body is made of ductile iron material, and the manhole cover can be round or square In this embodiment, a circular shape is used, because the circular well cover is not easy to tilt, and can better protect the safety of pedestrians and vehicles. The use of a circular shape is mainly due to the fact that the length of each diameter of the circular manhole cover through its center is the same, so that if the manhole cover is rolled up by a passing vehicle, its diameter will be slightly smaller than the wellhead below it no matter how it is rolled up. Wide, the manhole cover will not fall into the wellhead.

The well cover in the utility model also includes an outer ring body 5, the outer ring body 5 is made of resin material, the main cover body 4 is located at the inner side of the outer ring body, and a ring flange 1 is arranged below the outer ring body, and the flange and the outer ring body A distance of 3-5 cm is provided between the inner and outer edges of the body, and a reinforcing rib 1 with a triangular cross-section is arranged between the outer surface of the flange and the lower surface of the outer ring body. A plurality of soft limiting pieces 3 extending inward are also arranged on the bottom surface of the flange.

During installation, firstly, the main cover body is embedded into the outer ring body from the reverse side, and the main cover body is bonded to the side of the flange. Then the combination of the main cover body and the outer ring body is put into the ground counterbore. During the installation process, the reinforcing rib is squeezed and deformed, thereby forming a large friction force with the side wall of the counterbore, and fixing the well cover as a whole. At this time, manpower is difficult to remove the well cover from the counterbore, which reduces the situation that the well cover is stolen. In addition, due to the existence of the resin outer ring, the reinforcing rib can also play a buffer role, and the metal part of the manhole cover does not directly collide with the site, which greatly reduces the noise generated. The main cover presses against the limiting piece 3 by its own weight, thereby further fixing the outer ring body 5 .

Two notches 6 are provided on the edge of the main cover for disassembly and assembly, and the notches are provided under the outer ring for concealment. The notch is hidden. When dismantling, the designer can inform the staff of the position of the notch in advance, and lift the manhole cover from the notch. The thief cannot obtain the position of the gap at the first time, which increases the difficulty of theft.

A filter screen 7 is arranged at the drain hole, and a grid 8 for protecting the filter screen is arranged above the filter screen 7, and the filter screen is detachably mounted on the main cover by screws. The filter screen 7 can reduce the entry of foreign matter into the sewer and play a filtering role, especially in pipelines with methane concentration, to avoid foreign matter that may cause deflagration, such as cigarette butts, from entering.

Claims (4)

1. The utility model provides a compound municipal well lid of nodular cast iron resin, includes the main lid, the main lid is made by nodular cast iron material, is provided with the outlet on the main lid, its characterized in that: the novel plastic inner ring comprises a main cover body and is characterized by further comprising an outer ring body, wherein the outer ring body is made of resin materials, the main cover body is positioned on the inner side of the outer ring body, a circle of flange is arranged below the outer ring body, distances of 3-5 cm are arranged between the flange and the inner side and the outer side edge of the outer ring body, and reinforcing ribs with triangular cross sections are arranged between the outer side surface of the flange and the lower surface of the outer ring body.

2. The ductile iron resin composite municipal well lid according to claim 1 wherein: a plurality of soft limiting sheets extending inwards are arranged on the bottom surface of the flange.

3. The ductile iron resin composite municipal well lid according to claim 2 wherein: the main lid edge is provided with two breach and is used for the dismouting, the breach sets up in outer ring body below and is used for hiding.

4. A ductile iron resin composite municipal well lid according to claim 3 wherein: the water outlet is provided with a filter screen, a grid net for protecting the filter screen is arranged above the filter screen, and the filter screen is detachably arranged on the main cover body through screws.

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