A noise reduction well lid structure

Abstract

The application relates to the technical field of well lid noise reduction, and provides a noise reduction well lid structure, which comprises a well base, a well lid arranged on the well base, positioning bolts, the well lid and the well base being connected through the positioning bolts, a sealing rubber pad, the sealing rubber pad being clamped between the well lid and the well base, and the sealing rubber pad comprising a contact layer, a sound absorption layer and a sealing layer which are sequentially connected from top to bottom, the contact layer being in contact with the well lid, and the sealing layer being in sealing contact with the well base. The device isolates the well lid from the well base through the sealing rubber pad to avoid noise caused by iron-to-iron contact, thereby effectively solving the technical problem that the traditional well lid often contacts the well base to generate noise.

Description

Technical Field

[0001] This application relates to the field of noise reduction technology for manhole covers, and more specifically, to a noise-reducing manhole cover structure. Background Technology

[0002] Traditional manhole covers, widely used in urban roads and municipal facilities, are mostly made of metal materials such as cast iron and steel. They typically have a direct, rigid contact with the manhole frame, a "metal-to-metal" structure. In daily use, vehicle traffic, pedestrians stepping on them, or environmental vibrations can easily cause the manhole cover and frame to collide and rub against each other, generating continuous noise. This noise can seriously disturb the normal lives of nearby residents, especially during nighttime traffic rush hours or in densely populated areas, becoming a significant source of urban environmental noise pollution. Utility Model Content

[0003] In view of this, this application provides a noise-reducing manhole cover structure to solve the technical problem that traditional manhole covers often generate noise when in contact with the manhole seat in the prior art.

[0004] This application provides a noise-reducing manhole cover structure, wherein the noise-reducing manhole cover structure includes: Well base, and well cover installed on the well base; Positioning bolts are used to connect the manhole cover and the manhole base. A sealing rubber gasket is sandwiched between the manhole cover and the manhole seat. The sealing rubber gasket includes a contact layer, a sound-absorbing layer and a sealing layer connected in sequence from top to bottom. The contact layer contacts the manhole cover and the sealing layer makes a sealing contact with the manhole seat.

[0005] Furthermore, the contact layer is provided with multiple sets of protrusions that contact the bottom of the manhole cover, and the sound-absorbing layer is provided with multiple sets of honeycomb-shaped sound-absorbing holes.

[0006] Furthermore, the manhole cover is provided with multiple sets of positioning grooves, and the positioning grooves are provided with mounting through holes. The mounting through holes are provided with threads, and positioning bolts are connected to the threads.

[0007] Furthermore, the manhole cover is equipped with a retaining groove cover plate, which is detachably installed in the positioning groove.

[0008] Furthermore, a rubber ring is provided at the bottom of the groove cover plate, and the rubber ring surrounds the groove cover plate.

[0009] Furthermore, the baffle cover plate is provided with a first shaft hole, the positioning groove is provided with a second shaft hole, and pins are provided on both sides of the positioning groove. The pins pass through the first shaft hole and the second shaft hole to hinge the baffle cover plate and the positioning groove.

[0010] Furthermore, a limiting plate is also provided in the positioning groove. The limiting plate is located on the side away from the second shaft hole. The limiting plate is used to support the groove cover plate. The pin and the limiting plate together support the groove cover plate.

[0011] Furthermore, the baffle cover plate is provided with a switch slot. Operating the switch slot can drive the baffle cover plate to rotate around the pin shaft, thereby opening the positioning slot.

[0012] Furthermore, the manhole cover is equipped with multiple sets of anti-slip patterns.

[0013] Furthermore, the manhole cover is equipped with hand-held holes.

[0014] The beneficial effects of the noise-reducing manhole cover structure provided by this utility model are as follows: Compared to existing technologies, this utility model uses positioning bolts to securely connect the manhole cover, sealing rubber gasket, and manhole base, thus isolating the manhole cover and base through the sealing rubber gasket to prevent noise caused by iron contact. At the same time, the contact layer, sound-absorbing layer, and sealing layer of the sealing rubber gasket work together to reduce noise, thereby effectively solving the technical problem of noise generated by the frequent contact between the traditional manhole cover and the manhole base. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a noise-reducing manhole cover structure according to an embodiment of this application; Figure 2 for Figure 1 A sectional view; Figure 3 for Figure 2 A magnified view of a portion of the image; Figure 4 This is a schematic diagram of some components of a noise-reducing manhole cover structure according to an embodiment of the application; Figure 5 This is a schematic diagram of the structure of a noise-reducing manhole cover in an embodiment of this application; Figure 6 For this Figure 5 A magnified view of a portion of the image; Figure 7 This is an exploded view of the sealing rubber gasket in a noise-reducing manhole cover structure according to an embodiment of this application; Figure 8 This is a schematic diagram of some components in a noise-reducing manhole cover structure according to an embodiment of this application.

[0017] Explanation of reference numerals in the attached figures: 1-Well base; 2-Well cover; 3-Contact layer; 4-Sound-absorbing layer; 5-Sealing layer; 6-Positioning bolt; 21-Installation through hole; 22-Positioning groove; 23-Baffle cover plate; 24-Rubber ring; 25-First shaft hole; 26-Second shaft hole; 27-Pin; 28-Limiting plate; 29-Switch groove; 30-Anti-slip texture; 31-Handheld hole; 41-Raised dot; 42-Honeycomb sound-absorbing hole. Detailed Implementation

[0018] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. One or more embodiments of this application are exemplarily shown in the drawings to provide a more accurate and thorough understanding of the technical solutions disclosed herein. However, it should be understood that this application can be implemented in many different forms and is not limited to the embodiments described below.

[0019] In the accompanying drawings of this application, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0020] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0021] See Figures 1 to 8 This application provides a noise-reducing manhole cover structure, comprising: Manhole base 1, manhole cover 2 installed on manhole base 1, A sealing rubber gasket is installed at the bottom of the manhole cover 2, and the sealing rubber gasket is positioned between the manhole cover 2 and the manhole base 1. The sealing rubber pad includes a contact layer 3, a sound-absorbing layer 4, and a sealing layer 5. The contact layer 3 buffers and reduces the noise of the manhole cover 2 colliding with the base. The sound-absorbing layer 4 dissipates sound waves and reduces noise. The sealing layer 5 seals the gap between the manhole cover 2 and the base 1 to assist in noise reduction. The base 1 is the basic load-bearing component of the noise-reducing manhole cover structure 2. It has an internal connection mechanism (such as a flange interface) that matches the underground manhole, providing a stable installation foundation for the entire manhole cover 2 structure. The manhole cover 2 and the base 1 are matched in size. The manhole cover 2 can be moved to cover the upper opening of the base 1 to form a closed structure for the manhole opening. The sealing rubber pad is located between the manhole cover 2 and the base 1, forming a flexible isolation layer, which reduces the occurrence of iron-on-iron collisions from the source. On the other hand, it fills the gap between the manhole cover 2 and the base 1 to achieve a seal at the manhole opening.

[0022] The positioning bolt 6 is installed in the mounting through hole 21 of the manhole cover 2 and the manhole base 1. The positioning bolt 6 passes through the mounting through hole 21 to connect the manhole cover 2, the manhole base 1 and the sealing rubber gasket. The material of the positioning bolt 6 is selected with good corrosion resistance to avoid rust caused by long-term outdoor use and ensure the stability of the connection. The specifications of the positioning bolt 6 must be compatible with the structure of the subsequent mounting through hole 21 to ensure that it can penetrate the mounting through hole 21 of the manhole cover 2 and the manhole base 1 to achieve a stable connection of the three, while maintaining the compression state of the sealing rubber gasket to ensure the stable performance of the sealing and noise reduction functions of the sealing rubber gasket.

[0023] According to one embodiment of this application, the contact layer 3 is provided with multiple sets of protrusions 41, which contact the bottom of the manhole cover 2. A sound-absorbing layer 4 is disposed at the bottom of the contact layer 3, and the sound-absorbing layer 4 is provided with multiple sets of honeycomb-shaped sound-absorbing holes 42. A sealing layer 5 is disposed at the bottom of the sound-absorbing layer 4, and the bottom of the sealing layer 5 is positioned above the manhole seat 1. The protrusions 41 can be circular, square, or hemispherical in shape. Multiple sets of protrusions 41 are evenly distributed on the upper surface of the contact layer 3. When the contact layer 3 contacts the bottom of the manhole cover 2, only the protrusions 41 directly contact the bottom of the manhole cover 2. Compared to full-area contact of the entire contact layer 3, the protrusion 41 design reduces the contact area, thereby reducing frictional noise between the manhole cover 2 and the contact layer 3 during vibration. Simultaneously, the protrusions... 41 has a certain elastic deformation capacity, which can further buffer the impact of the manhole cover 2 and improve the buffering and noise reduction effect. The honeycomb sound-absorbing holes 42 of the sound-absorbing layer 4 are circular through holes opened along the thickness direction of the sound-absorbing layer 4. Multiple sets of sound-absorbing holes are distributed in a honeycomb array. When the sound enters the honeycomb sound-absorbing holes 42, it will be reflected multiple times between the hole walls. The energy of the sound wave is absorbed and dissipated by the rubber material of the sound-absorbing layer 4 during the reflection process, thereby significantly reducing the transmission of noise. The sealing layer 5 is fixed to the bottom of the sound-absorbing layer 4 by pasting or integral molding. Its lower surface is a flat sealing surface, which can fit tightly with the upper surface of the manhole seat 1 to ensure that the gap is completely filled, which not only prevents foreign objects from entering, but also avoids gap noise.

[0024] According to one embodiment of this application, the manhole cover 2 is provided with a plurality of positioning grooves 22 and mounting through holes 21 corresponding one-to-one in number and position to the plurality of positioning grooves 22. The upper end of the mounting through hole 21 extends into the corresponding positioning groove 22, and the lower end of the mounting through hole 21 extends out of the lower surface of the manhole cover 2. The upper end of the positioning bolt 6 is threadedly connected to the mounting through hole 21, and the lower end of the positioning bolt 6 is threadedly connected to the manhole base 1. The positioning groove 22 is provided with the mounting through hole 21, and the mounting through hole 21 is provided with a thread. The positioning bolt 6 is connected to the thread. The positioning groove 22 is larger than the mounting through hole 21. The positioning groove 22 provides operating space for the installation and maintenance of the positioning bolt 6. The mounting through hole 21 is specifically located at the bottom of the positioning groove 22. That is, the mounting through hole 21 is a hole structure that extends from the bottom of the positioning groove 22 to the bottom of the well cover 2. The inner wall of the mounting through hole 21 is machined with internal threads, which match the external threads of the positioning bolt 6. This means that the positioning bolt 6 does not need to be matched with an additional nut. At the same time, the mounting through hole 21 of the well seat 1 is further inserted, and finally the connection of the three is achieved.

[0025] According to one embodiment of this application, a retaining cover plate 23 is provided on the manhole cover 2. The retaining cover plate 23 is located on the positioning groove 22 and covers the positioning groove 22. The size of the retaining cover plate 23 is adapted to the size of the positioning groove 22 and can completely cover the opening of the positioning groove 22. This prevents foreign objects such as mud, sand, and fallen leaves from entering the installation through hole 21 through the positioning groove 22, which would cause corrosion of the threads of the positioning bolt 6 and affect the subsequent disassembly and maintenance of the bolt. At the same time, the retaining cover plate 23 keeps the surface of the manhole cover 2 flat and prevents the opening of the positioning groove 22 from affecting the safety of pedestrians and vehicles.

[0026] According to one embodiment of this application, a rubber ring 24 is provided at the bottom of the retaining groove cover 23. The rubber ring 24 surrounds the retaining groove cover 23, and the inner diameter of the rubber ring 24 is consistent with the edge size of the retaining groove cover 23. The rubber ring 24 is precisely embedded in the opening of the positioning groove 22, forming a sealing structure between the retaining groove cover 23 and the positioning groove 22. On the one hand, it can prevent rainwater and other foreign objects from entering the positioning groove 22 and the installation through hole 21. On the other hand, the elasticity of the rubber ring 24 can reduce the rigid collision between the retaining groove cover 23 and the manhole cover 2, and extend the service life. According to one embodiment of this application, a first shaft hole 25 is provided on the retaining groove cover plate 23, and a second shaft hole 26 is provided on the positioning groove 22. Pins 27 are provided on both sides of the positioning groove 22. The pins 27 pass through the first shaft hole 25 and the second shaft hole 26 to hinge the retaining groove cover plate 23 and the positioning groove 22. This hinge structure allows the retaining groove cover plate 23 to rotate around the pins 27 to realize the opening and closing function of the retaining groove cover plate 23. When it is necessary to maintain the positioning bolt 6, it is only necessary to rotate the retaining groove cover plate 23 to expose the positioning groove 22 without completely disassembling the cover plate, which improves the convenience of maintenance. At the same time, the hinge structure avoids the risk of loss of the retaining groove cover plate 23.

[0027] According to one embodiment of this application, a limiting plate 28 is further provided in the positioning groove 22. The limiting plate 28 is located on the side away from the second shaft hole 26. The limiting plate 28 is used to support the retaining groove cover plate 23. The pin 27 and the limiting plate 28 together provide support for the retaining groove cover plate 23. The limiting plate 28 is a plate-shaped structure fixed to the inner wall of the positioning groove 22. Its setting position is located on the side of the positioning groove 22 away from the second shaft hole 26. The upper surface of the limiting plate 28 is exactly aligned with the lower surface of the retaining groove cover plate 23. The function of the limiting plate 28 is to support the retaining cover 23. When the retaining cover 23 is closed and subjected to external pressure, the pin 27 at the hinge end alone is not enough to fully bear the external force, which may easily lead to deformation of the retaining cover 23 or breakage of the pin 27. The limiting plate 28 can provide support at the free end of the retaining cover 23 (away from the hinge end), and at the same time ensure that when the retaining cover 23 is kept in a horizontal closed state, the flatness of the manhole cover 2 surface and the safety of passage are not affected.

[0028] According to one embodiment of this application, a switch groove 29 is provided on the retaining groove cover plate 23. Operating the switch groove 29 can drive the retaining groove cover plate 23 to rotate around the pin 27, thereby opening the positioning groove 22. The switch groove 29 is a groove-shaped structure opened on the upper surface of the retaining groove cover plate 23. Its depth and width are designed to facilitate the operator to insert tools or fingers. Since the retaining groove cover plate 23 and the positioning groove 22 are sealed by a rubber ring 24, the two fit tightly in the closed state, making it difficult to pry open by hand. The setting of the switch groove 29 provides the operator with a convenient operating point.

[0029] According to one embodiment of this application, the manhole cover 2 is provided with multiple sets of anti-slip patterns 30. The anti-slip patterns 30 are raised or recessed structures on the upper surface of the manhole cover 2, which increase the surface friction of the manhole cover 2 and improve the safety of use.

[0030] According to one embodiment of this application, a hand-held hole 31 is provided on the manhole cover 2. The hand-held hole 31 is one or more pairs of holes opened in the edge area of ​​the manhole cover 2. The diameter of the hole is preferably such that it is convenient for the operator to insert his hand or tools. The edge of the hand-held hole 31 is rounded to avoid scratching the hand. The purpose is to facilitate the handling and loading / unloading of the manhole cover 2.

[0031] It should be noted that the above embodiments only illustrate preferred embodiments of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting this application. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of this application, such as combining different features in various embodiments, and these should all fall within the protection scope of this application.

Claims

1. A noise-reducing manhole cover structure, characterized in that, The noise-reducing manhole cover structure includes: A well base, and a well cover mounted on the well base; The manhole cover and the manhole base are connected by positioning bolts. A sealing rubber gasket is sandwiched between the manhole cover and the manhole base. The sealing rubber gasket includes a contact layer, a sound-absorbing layer and a sealing layer connected sequentially from top to bottom. The contact layer contacts the manhole cover, and the sealing layer makes a sealing contact with the manhole base.

2. The noise-reducing manhole cover structure according to claim 1, characterized in that, The contact layer is provided with multiple sets of protrusions, which contact the bottom of the manhole cover, and the sound-absorbing layer is provided with multiple sets of honeycomb-shaped sound-absorbing holes.

3. The noise-reducing manhole cover structure according to claim 1, characterized in that, The manhole cover is provided with multiple sets of positioning grooves, and the positioning grooves are provided with mounting through holes. The mounting through holes are provided with threads, and the positioning bolts are connected to the threads.

4. The noise-reducing manhole cover structure according to claim 3, characterized in that, The manhole cover is provided with a retaining groove cover plate, which is detachably installed at the positioning groove.

5. The noise-reducing manhole cover structure according to claim 1, characterized in that, The bottom of the groove cover plate is provided with a rubber ring, which surrounds the groove cover plate.

6. The noise-reducing manhole cover structure according to claim 5, characterized in that, The baffle cover plate is provided with a first shaft hole, the positioning groove is provided with a second shaft hole, and pins are provided on both sides of the positioning groove. The pins pass through the first shaft hole and the second shaft hole to hinge the baffle cover plate and the positioning groove.

7. The noise-reducing manhole cover structure according to claim 6, characterized in that, The positioning groove is also provided with a limiting plate, which is located on the side away from the second shaft hole. The limiting plate is used to support the groove cover plate, and the pin and the limiting plate together support the groove cover plate.

8. The noise-reducing manhole cover structure according to claim 7, characterized in that, The baffle cover plate is provided with a switch slot. Operating the switch slot can drive the baffle cover plate to rotate around the pin shaft, thereby opening the positioning slot.

9. The noise-reducing manhole cover structure according to claim 1, characterized in that, The manhole cover is equipped with multiple sets of anti-slip patterns.

10. The noise-reducing manhole cover structure according to claim 1, characterized in that, The manhole cover is equipped with a hand-held hole.

Images