Municipal shock-absorbing and mute manhole cover

Abstract

The utility model provides a kind of municipal shock-absorbing mute inspection well lid, including well lid body and well pedestal, well lid body lower end edge is provided with a ring of annular flange, first wear-resistant gasket is inlaid in annular flange lower end face, well lid body lower end evenly distributed with multiple elastic support, multiple elastic support lower end face is inlaid with second wear-resistant gasket, the design solves the original inspection well lid of adopting elastic material is exposed in outdoor for a long time, leading to shock-absorbing effect rapid attenuation even failure, and the structure of the inspection well lid of setting spring is complex, cost is high, and the problem of easy blockage failure, the utility model uses multiple buffer flow guide type shock-absorbing mute inspection well lid, by ingenious combination flexible filling cavity, elastic support array and initiative flow guide drainage system three big core innovation structure, effectively overcome many shortcomings of prior art, realize more excellent, more lasting stable noise reduction effect, improve drainage performance and overall durability simultaneously, with significant technical progress and practical value.

Description

Technical Field

[0001] This utility model is a shock-absorbing and silent manhole cover for municipal use, belonging to the field of municipal infrastructure technology. Background Technology

[0002] Municipal manhole covers are crucial facilities for covering inspection wells of underground pipelines (such as sewers, cables, and gas pipelines) in urban roads, sidewalks, and squares. Traditional manhole covers (mostly made of cast iron) produce a loud metallic impact sound (a "clanging" sound) when vehicles drive over them due to the gap and rigid contact between the cover and the base, known as "cover jumping noise." This noise has become a significant source of urban traffic noise pollution, seriously affecting the quality of life and working environment of residents along the road. To solve this problem, "vibration-damping and silent manhole covers" have emerged. Its core design goal is to effectively absorb and buffer the impact energy generated when vehicles run over it through specific mechanical structure design, while ensuring load-bearing strength and safety, thereby reducing or eliminating the manhole cover. Currently, most well-known shock-absorbing and silent manhole cover structures have a ring of elastic material (such as rubber or polyurethane) embedded in the ring edge of the manhole cover or the supporting surface of the manhole seat, or springs (such as helical compression springs or disc springs) or elastic support blocks (such as rubber columns) set under the manhole cover to "suspend" the manhole cover on the manhole seat.

[0003] However, manhole covers made of elastic materials are exposed to the outdoors for a long time and are susceptible to aging, hardening, cracking, and deformation due to ultraviolet rays, ozone, oil stains, and temperature changes. This leads to a rapid decrease or even failure of the shock absorption effect. Manhole covers with springs have a complex structure and high cost: the addition of multiple springs or support elements and their fixing structures increases manufacturing and installation costs and makes them prone to clogging and failure: mud, sand, garbage and other debris can easily invade the spring gaps or the interior of the support structure, causing the springs to jam, corrode or the elastic elements to fail, thus losing the shock absorption function. There is an urgent need for a shock-absorbing and silent manhole cover for municipal use to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a municipal shock-absorbing and silent manhole cover to solve the problems mentioned in the background technology. This utility model achieves multiple energy absorption and buffering through innovative structural design, effectively reducing impact noise; at the same time, it has excellent drainage performance and anti-sand intrusion ability, significantly improving durability and long-term silent effect; the structure is relatively simple and easy to manufacture, install and maintain.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a municipal shock-absorbing and silent manhole cover, comprising a manhole cover body and a manhole base, wherein a ring flange is provided at the lower edge of the manhole cover body, and a first wear-resistant liner is embedded in the lower end face of the ring flange; multiple elastic supports are evenly distributed at the lower end of the manhole cover body, and a second wear-resistant liner is embedded in the lower end face of each of the multiple elastic supports; the manhole cover body is placed horizontally in the manhole base; a support surface is integrally provided inside the manhole base; a ring groove and multiple circular pits are provided on the upper outer side of the support surface; the ring groove is filled with a flexible filler; a polyurethane sidewall ring is fixed to the inner side wall of the manhole base; and multiple guide grooves are provided on the side surface of the polyurethane sidewall ring.

[0006] Furthermore, drainage holes are provided on both the left and right sides of the upper end of the manhole cover body.

[0007] Furthermore, all of the elastic supports are made of high-performance rubber or thermoplastic elastomer (TPE) material.

[0008] Furthermore, the flexible filler is a high-performance polyurethane elastomer or silicone rubber.

[0009] Furthermore, the lower inner side of the well base is provided with multiple side discharge holes, and multiple guide grooves are respectively connected to the multiple side discharge holes.

[0010] Furthermore, the first wear-resistant pad abuts against the flexible filler, and multiple second wear-resistant pads are respectively inserted into multiple circular recesses.

[0011] The beneficial effects of this utility model: This utility model provides a municipal shock-absorbing and silent manhole cover. Because it incorporates an annular flange, a first wear-resistant liner, an elastic support, a second wear-resistant liner, a support surface, a circular recess, flexible filler, a guide channel, a side discharge hole, and a polyurethane sidewall ring, its structure is reasonable. Employing a multi-buffered, flow-guiding shock-absorbing and silent manhole cover, it cleverly combines three core innovative structures: a flexible filling cavity, an elastic support array, and an active flow-guiding drainage system. This effectively overcomes many shortcomings of existing technologies, achieving a superior, more durable, and stable noise reduction effect. Simultaneously, it improves drainage performance and overall durability, demonstrating significant technological progress and practical value, and is highly applicable. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a structural schematic diagram of a municipal shock-absorbing and silent manhole cover according to the present invention;

[0014] Figure 2This is a schematic diagram showing the disassembled structure of a municipal shock-absorbing and silent manhole cover according to the present invention;

[0015] Figure 3 This is a schematic diagram of the flexible filling material structure of a municipal shock-absorbing and silent manhole cover according to this utility model.

[0016] In the figure: 1-Manhole cover body, 2-Drainage hole, 3-Annular flange, 4-First wear-resistant liner, 5-Elastic support, 6-Second wear-resistant liner, 7-Manhole seat, 8-Supporting surface, 9-Circular pit, 10-Annular groove, 11-Flexible filler, 12-Guide channel, 13-Side discharge hole, 14-Polyurethane sidewall ring. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] Please see Figures 1-3 This utility model provides a technical solution: a municipal shock-absorbing and silent manhole cover, including a manhole cover body 1 and a manhole base 7. The lower edge of the manhole cover body 1 is provided with an annular flange 3, and the lower end surface of the annular flange 3 is inlaid with a first wear-resistant pad 4. Multiple elastic supports 5 are evenly distributed at the lower end of the manhole cover body 1, and the lower end surface of each of the multiple elastic supports 5 is inlaid with a second wear-resistant pad 6. The manhole cover body 1 is placed horizontally in the manhole base 7. The manhole base 7 is integrally provided with a support surface 8. The upper outer side of the support surface 8 is provided with an annular groove 10 and multiple circular pits 9. The annular groove 10 is filled with a flexible filler 11. A polyurethane sidewall ring 14 is fixed to the inner side wall of the manhole base 7. Multiple guide grooves 12 are provided on the side surface of the polyurethane sidewall ring 14. This design solves the problem that the original manhole covers using elastic materials are exposed to the outdoors for a long time, resulting in a rapid decay or even failure of the shock absorption effect. The manhole covers with springs have a complex structure, high cost, and are prone to clogging and failure.

[0019] As the first embodiment of this utility model: drainage holes 2 are provided on both the left and right sides of the upper end of the manhole cover body 1. Multiple elastic supports 5 are made of high-performance rubber or thermoplastic elastomer (TPE) material. The multiple elastic supports 5 are made of high-performance rubber or thermoplastic elastomer (TPE) material, which have excellent compression resistance, creep resistance and aging resistance. As an array structure, they mainly bear vertical loads, provide stable support and secondary buffering, and allow the manhole cover body 1 to have slight adaptive displacement in the horizontal direction, reducing friction noise.

[0020] The flexible filler 11 is made of high-performance polyurethane elastomer or silicone rubber. This material possesses good elasticity, high damping, and weather resistance. When the manhole cover body 1 is under pressure, the annular flange 3 is first pressed into the flexible filler 11, absorbing most of the high-frequency impact energy. Multiple side discharge holes 13 are provided on the lower inner side of the manhole base 7, and multiple guide channels 12 are connected to these side discharge holes 13. This design ensures that rainwater or splashed sewage can quickly collect through the guide channels 12 and smoothly drain into the inspection well below via the multiple side discharge holes 13, effectively preventing water accumulation. The first wear-resistant pad 4 abuts against the flexible filler 11, and multiple second wear-resistant pads 6 are respectively inserted into multiple circular recesses 9. By adding the first wear-resistant pad 4 and multiple second wear-resistant pads 6, which are made of ultra-high molecular weight polyethylene (UHMWPE), nylon, or wear-resistant ceramic sheets, the wear on the contact surface is significantly reduced and the service life is extended.

[0021] As a second embodiment of this utility model: when the manhole cover body 1 is under pressure, the annular flange 3 is first pressed into the flexible filler 11 to absorb most of the high-frequency impact energy. The multiple elastic supports 5 are all made of high-performance rubber or thermoplastic elastomer TPE material, which has excellent compression resistance, creep resistance and aging resistance. As an array structure, it mainly bears the vertical load, provides stable support and secondary buffer, and allows the manhole cover body 1 to have a small adaptive displacement in the horizontal direction, reducing friction noise. The first wear-resistant liner 4 and multiple second wear-resistant liners 6 are liners made of ultra-high molecular weight polyethylene (UHMWPE), nylon or wear-resistant ceramic sheets, which significantly reduce the wear of the contact surface between the annular flange 3 and the flexible filler 11, and also reduce the wear of the contact surface between the multiple elastic supports 5 and the support surface 8, extending the service life. When water accumulates at the support surface 8, it can be smoothly discharged into the inspection well below through multiple guide channels 12 and multiple side discharge holes 13, effectively avoiding water accumulation.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A municipal shock-absorbing and silent manhole cover, comprising a manhole cover body (1) and a manhole base (7), characterized in that: The lower edge of the manhole cover body (1) is provided with a ring flange (3), and the lower end face of the ring flange (3) is inlaid with a first wear-resistant liner (4). Multiple elastic supports (5) are evenly distributed at the lower end of the manhole cover body (1), and the lower end face of each of the multiple elastic supports (5) is inlaid with a second wear-resistant liner (6). The manhole cover body (1) is placed horizontally in the manhole seat (7). The manhole seat (7) is integrally provided with a support surface (8). The upper outer side of the support surface (8) is provided with a ring groove (10) and multiple circular pits (9). The ring groove (10) is filled with a flexible filler (11). A polyurethane sidewall ring (14) is fixed on the inner side wall of the manhole seat (7). Multiple guide grooves (12) are provided on the side surface of the polyurethane sidewall ring (14).

2. A municipal shock-absorbing and silent manhole cover according to claim 1, characterized in that: Drainage holes (2) are provided on both the left and right sides of the upper end of the manhole cover body (1).

3. A municipal shock-absorbing and silent manhole cover according to claim 1, characterized in that: All of the elastic supports (5) are made of high-performance rubber or thermoplastic elastomer (TPE).

4. A municipal shock-absorbing and silent manhole cover according to claim 1, characterized in that: The flexible filler (11) is a high-performance polyurethane elastomer or silicone rubber.

5. A municipal shock-absorbing and silent manhole cover according to claim 1, characterized in that: The lower inner side of the well base (7) is provided with multiple side discharge holes (13), and multiple guide grooves (12) are respectively connected to the multiple side discharge holes (13).

6. A municipal shock-absorbing and silent manhole cover according to claim 1, characterized in that: The first wear-resistant pad (4) abuts against the flexible filler (11), and multiple second wear-resistant pads (6) are respectively inserted into multiple circular recesses (9).

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