CN220813974U - Well lid noise reduction device - Google Patents

Abstract

The utility model provides a well lid device of making an uproar falls, relates to city public equipment field, the device includes the ring that is provided with domatic at well lid periphery, the interior circle and the well lid parallel and level of ring, domatic follow the interior circle downwardly extending of ring, the difference in height of ring is greater than or equal to the pitch thickness on road surface. According to the utility model, the inner side of the circular ring is level with the well lid, the circular ring is covered by asphalt, asphalt on the circular ring and asphalt on a road surface are worn by vehicles at the same time, the circular ring is gradually exposed after being worn, and the edge of the well lid does not form steps due to the gradient of the circular ring, so that noise generated when the vehicles pass can be reduced; the height difference of the circular ring is larger than or equal to the asphalt thickness of the pavement, so that steps can not be generated between the pavement and the circular ring before asphalt is completely worn, and the maintenance period is prolonged while the noise of vehicles passing through is reduced.

Description

Well lid noise reduction device

Technical Field

The utility model relates to the field of urban public equipment, in particular to a well lid noise reduction device.

Background

There are a large number of well covers on urban roads, when vehicles frequently pass, the road surface can be lower than the well cover due to the abrasion of road surface paving materials (such as asphalt and cement), steps are generated between the road surface and the well cover, and the steps are the reasons for noise generated when the vehicles pass through the well cover.

Currently, there are two main approaches to solve this problem: paving the road surface around the well cover again, and adjusting the height difference between the well cover and the road surface.

Paving the pavement around the well cover again, wherein the pavement is leveled with the well cover by lifting the pavement; the height difference between the well cover and the road surface is adjusted by reducing the height of the well cover so that the road surface is flush with the well cover.

The two modes can not reduce the abrasion of the vehicle to the road surface and can not prolong the period of forming steps.

Japanese patent application JP 2011190575 proposes a step-difference reducing device realized by providing a step-reducing member having an upper surface at the same level as the road surface around a manhole cover on the road surface on which a vehicle is traveling, the step-reducing member being made of a material having lower wear resistance than the manhole cover and higher wear resistance than the paving material of the road surface. Although this method may be capable of reducing the steps of the manhole cover and the road surface by using materials having different wear resistances, two steps may be generated, that is, steps may be generated between the road surface and the step-relaxing member and between the step-relaxing member and the manhole cover, for a long period of use.

Disclosure of Invention

The application aims to provide a device capable of reducing noise caused by steps of a well cover and a road surface when a vehicle passes through, and prolonging maintenance period.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a well lid noise reduction device, includes the ring that is provided with the domatic at well lid periphery, the interior circle and the well lid parallel and level of ring, the domatic follow the interior circle downwardly extending of ring.

Further, the material of the circular ring is the same as that of the well lid.

Further, the inclination angle of the circular slope surface is smaller than 5 degrees.

Further, the height difference of the circular ring is larger than or equal to the asphalt thickness of the pavement.

Further, 2-3 concentric circle bulges are arranged on the slope surface of the circular ring.

The beneficial effects are that: according to the utility model, the periphery of the well cover is provided with the slope circular ring, the inner side of the circular ring is level with the well cover, the circular ring is covered by asphalt, asphalt on the circular ring and asphalt on a road surface are worn by vehicles at the same time, the circular ring is gradually exposed after the asphalt on the circular ring is worn, and the edge of the well cover does not form steps due to the slope of the circular ring, so that noise generated when the vehicles pass can be reduced; in the further technical scheme, the height difference of the circular ring is larger than or equal to the asphalt thickness of the pavement, so that steps can not be generated between the pavement and the circular ring before asphalt is completely worn, and the maintenance period is prolonged while the noise of vehicles passing is reduced.

Drawings

Figure 1 is a schematic view of two directions of a circular ring,

Figure 2 is a schematic view of the mounting structure,

Figure 3 is a schematic representation of the pavement asphalt after abrasion,

Figure 4 is a schematic view of the structure of a segmented ring,

Fig. 5 is a schematic diagram of the structure of a monolith.

Wherein, 1: circular ring, 1-1: slope, 1-2: concentric circles are raised, 1-3: bump, 1-4: groove, 2: well lid, 3: well lid erection bracing, 3-1: annular step, 4: asphalt, 5: roadbed.

Detailed Description

Referring to fig. 1, the device comprises a circular ring 1 which is arranged on the periphery of a well cover and provided with a slope surface 1-1, wherein the inner circle of the circular ring 1 is flush with the well cover, the slope surface 1-1 extends downwards from the inner circle of the circular ring 1, and the lower surface of the circular ring is a plane or other shapes which can be well contacted with a roadbed.

Referring to fig. 2, the well lid 2 is mounted on the well lid mounting support 3, and asphalt 4 laid on the road surface is flush with the well lid 2. The ring 1 is arranged on an annular step 3-1 at the outer side of the annular well lid mounting support 3, a roadbed 5 is arranged below the ring 1, the inner circle of the ring 1 is the highest point and is level with the well lid 2, and asphalt 4 is arranged above a slope 1-1 of the ring 1.

The inner diameter and the height of the circular ring 1 are set according to the sizes of the well lid mounting support 3 and the annular step 3-1, and the inner circle of the circular ring 1 is enabled to be flush with the well lid 2.

Referring to fig. 3, after the pavement is paved, asphalt 4 is worn after a period of use, and part of slope 1-1 is exposed, and as the inclination angle A of the slope 1-1 of the circular ring 1 is smaller than 5 degrees, the minimum angle between the pavement and the slope 1-1 is 175 degrees, and no step is generated between the pavement and the slope 1-1; the ring 1 adopts the same material as the well lid 2, and the wearing degree is the same, and the interior circle of ring 1 and well lid 2 parallel and level, also can not produce the step between ring 1 and the well lid 2, stopped the noise that produces because of the step.

The asphalt thickness is calculated according to the concrete conditions of road grade, traffic volume and the like. When the semi-rigid base asphalt pavement is adopted, the thickness of the asphalt layer of the expressway or the primary highway can be 120-180 mm. The thickness of the asphalt layer of the secondary road is preferably 60-120 mm. The thickness of the asphalt layer of the three-level highway is preferably 30-50 mm (mixing method) or 15-30 mm (layer paving method). The thickness of the asphalt layer of the four-level highway is preferably 10-30 mm.

In this embodiment, the height difference of the ring 1, that is, the difference H between the highest position and the lowest position of the slope 1-1 is greater than or equal to the asphalt thickness D of the road surface, so that the design can ensure that the lowest end of the slope 1-1 is level with the roadbed 5 or is partially covered by the roadbed 5, and no step is generated between the road surface and the slope 1-1 after the asphalt 4 is completely worn. If asphalt on the pavement is worn to the extent, the pavement is paved again, so that the periphery of the well cover is identical to the maintenance period of the pavement, and steps are not generated around the well cover before maintenance.

In order to prevent the vehicle from skidding on the slope 1-1, the embodiment is provided with 2-3 concentric circular bulges 1-2 on the slope 1-1 of the circular ring 1. If the slope 1-1 is only exposed to a small extent, the slope is not long, and the meaning of increasing friction is not great, in this embodiment, the protrusion 1-2 is disposed at the end of the slope 1-1, as shown in fig. 1. When the slope 1-1 is exposed more, the bulge 1-2 only appears.

The width W of the ring 1 is determined according to the angle a and the thickness D of the asphalt 4, provided that the height difference H of the ring 1 is ensured to be equal to or greater than the asphalt thickness D of the road surface. The thickness of the rim of the ring 1 is not particularly limited.

The ring 1 is bulky and the overall casting increases the difficulty and cost of processing and transportation. In this embodiment, the ring 1 is uniformly divided into 4-8 blocks, and fig. 4 is a schematic structural diagram of the ring 1 uniformly divided into 6 blocks. As shown in FIG. 5, 2-3 lugs 1-3 are arranged on one side surface of each block, grooves 1-4 matched with the lugs 1-3 are arranged on the other side surface, and each block is assembled into an integral circular ring 1 through the lugs 1-3 and the grooves 1-4 during field installation.

The edge profile of the protruding block 1-3 and the groove 1-4 is arc or trapezoid.

In addition, the structure can also realize that the periphery of the well cover 2 is locally provided with a slope, for example, the well cover at the edge of a road is not provided with the slope under the road surface through which no vehicle passes, so that the investment is saved.

Furthermore, it should be understood that while the present description has been described in terms of embodiments, such description is for clarity only, and that the description as a whole is within the purview of one skilled in the art, and that the technical solutions in the examples may be suitably combined to form other embodiments that will be understood by one skilled in the art. Modifications and equivalents of some of the technical features of the specific embodiments of the present utility model should be included in the scope of the technical solution claimed in the present utility model without departing from the spirit of the technical solution of the present utility model.

Claims (7)

1. The utility model provides a well lid noise reduction device, its characterized in that, the device includes the ring (1) that is provided with domatic (1-1) in well lid (2) periphery, the interior circle of ring (1) is parallel and level with well lid (2), domatic (1-1) follow the interior circle downwardly extending of ring (1).

2. The well lid noise reduction device according to claim 1, characterized in that the material of the circular ring (1) is the same as the material of the well lid (2).

3. The manhole cover noise reduction device according to claim 1, characterized in that the inclination angle (a) of the slope (1-1) of the ring (1) is less than 5 °.

4. A manhole cover noise reducer according to claim 1 or 3, characterized in that the height difference (H) of the circular ring (1) is equal to or greater than the asphalt thickness (D) of the road surface.

5. The well lid noise reduction device according to claim 1, wherein 2-3 concentric circular protrusions (1-2) are arranged on the slope surface (1-1) of the circular ring (1).

6. The manhole cover noise reduction device according to claim 5, wherein the protrusion (1-2) is provided at the end of the slope (1-1).

7. The manhole cover noise reduction device according to claim 1, characterized in that the circular ring (1) is equally divided into 4-8 pieces.