Well lid with noise reduction function

Abstract

The utility model discloses a well lid with a silencing function, which comprises an upper lid body and a lower lid body, the upper lid body is used for being fixed on a road surface, and the lower part of the lower lid body faces a sewer; at least one side wall extends from the lower side surface of the upper cover body, and the lower cover body is arranged at the lower edge of the side wall; wherein the side wall is connected with the upper cover body and the lower cover body to form a cavity; the lower cover body (200) is further provided with a sound insulation layer, and the sound insulation layer comprises a first sound insulation layer arranged below the lower cover body (200) and a second sound insulation layer arranged between the upper cover body (100) and the road surface. Rainwater is released into a sewer through the first gap; the sound insulation layer can be used for blocking noise transmitted from a sewer to the ground and can also provide buffering between the upper well lid and the ground, and the noise generated when a vehicle passes through the road surface and the noise generated when rainwater falls into the sewer are effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the manhole cover technical field, especially relate to a well lid with sound attenuation function. BACKGROUND

[0002] The existing sewer manhole cover does not have the function of automatically passing rainwater. When the rainfall suddenly increases, especially in extreme weather conditions such as heavy rain or typhoon, rainwater will quickly accumulate on the road surface, forming water accumulation. When the rainfall is large, the position of the manhole cover relative to the well mouth needs to be manually moved, so that a certain gap is left between the well mouth and the manhole cover for passing rainwater. Moreover, in some cases, the rapid flow of water through the sewer will cause noise during the drainage process, and the noise will spread through the manhole cover to the road area. In addition, when a vehicle passes through the road surface, noise will be generated due to the impact between the manhole cover and the road surface. SUMMARY

[0003] To solve the above problems, the utility model discloses a well lid with sound attenuation function, which comprises: an upper cover body and a lower cover body, the upper cover body is used for fixing to the road surface, the lower cover body is downward to the sewer; the lower side of the upper cover body extends at least one side wall, the lower edge of the side wall is provided with the lower cover body; wherein the side wall is connected with the upper cover body and the lower cover body to form a cavity; the lower cover body (200) is also provided with a sound insulation layer, the sound insulation layer comprises a first sound insulation layer arranged below the lower cover body (200) and a second sound insulation layer arranged between the upper cover body (100) and the road surface.

[0004] In some exemplary embodiments, a plurality of first through holes are formed in the upper cover body, the first through holes are communicated with the cavity, and a side hole is further formed in the side wall, which communicates the cavity with the sewer.

[0005] In some exemplary embodiments, the first direction is upward toward the upper cover body, and the second direction is downward toward the lower cover body.

[0006] In some exemplary embodiments, the sound insulation layer is rubber or foam.

[0007] In some exemplary embodiments, the side wall includes a ring-shaped side wall and a rhombus-shaped side wall extending downward from the lower side of the upper cover body, and the ring-shaped side wall is arranged outside the rhombus-shaped side wall.

[0008] In some exemplary embodiments, the cavity includes a first cavity and a second cavity; wherein the upper and lower edges of the ring-shaped side wall are connected with the upper cover body and the lower cover body respectively to form the first cavity, the rhombus-shaped side wall and the upper cover body and the lower cover body are connected to form the second cavity, and the second cavity is arranged in the first cavity.

[0009] In some exemplary embodiments, the side hole comprises a first side hole and a second side hole; wherein the first side hole is opened on the annular side wall, the second side hole is opened on the rhombic side wall, the first side hole communicates the first chamber with the outside, and the second side hole communicates the first chamber with the second chamber.

[0010] In some exemplary embodiments, the upper cover body further extends an outer side wall, the outer side wall surrounds the annular side wall, the rhombic side wall and the lower cover body inside; a first gap is left between the lower edge of the lower cover body and the lower edge of the outer side wall.

[0011] The effect is that:

[0012] The first through hole is used for passing rainwater, specifically, the rainwater passes through the first through hole, then passes through the first side hole and / or the second through hole, and reaches the first gap, and the rainwater is released to the sewer through the first gap. Compared with the manhole cover structure of the prior art which cannot pass rainwater, the manhole cover structure of the present application can continuously pass rainwater, and road waterlogging is avoided.

[0013] Other features and advantages of the present application will be described in the following description, and some will become apparent from the description, or will be understood from the practice of the present application. The purpose and other advantages of the present application can be achieved and obtained by the structure indicated in the specification, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0015] Figure 1 A manhole cover structure with sound attenuation function according to an embodiment of the present application is shown in the schematic diagram;

[0016] Figure 2 A cross-sectional structure schematic diagram of a manhole cover with sound attenuation function according to an embodiment of the present application is shown;

[0017] Figure 3 Another angle schematic diagram of a manhole cover with sound attenuation function according to an embodiment of the present application is shown;

[0018] Figure 4 An explosion schematic diagram of a manhole cover with sound attenuation function according to an embodiment of the present application is shown.

[0019] In the drawings:

[0020] 100 - upper cover body, 110 - side wall, 111 - annular side wall, 112 - rhombic side wall, 113 - outer side wall, 114 - first notch, 120 - first through hole, 130 - first hinge part, 140 - second through hole, 151 - first rib, 152 - second rib, 160 - annular fixing ring;

[0021] 200 - lower cover body, 210 - small opening end, 220 - large opening end;

[0022] 300 - chamber, 310 - first chamber, 311 - first side hole, 320 - second chamber, 321 - second side hole;

[0023] 400 - first gap;

[0024] 510 - first direction, 520 - second direction. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Reference will now be made to the drawings Figure 1-4 to understand the embodiments of the present application.

[0027] The present embodiment discloses a well lid with a sound reduction function, comprising: an upper cover body 100 and a lower cover body 200, the upper cover body 100 is used for being fixed to a road surface, the lower cover body 200 is downwardly directed to a sewer; the lower side of the upper cover body 100 extends at least one side wall 110, in the present embodiment, the side wall 110 is an annular wall surface, the lower edge of the side wall 110 is provided with the lower cover body 200, in the present example, the annular side wall 110 is connected with the upper cover body 100 and the lower cover body 200 to form a chamber 300, the chamber 300 can be used for containing rainwater.

[0028] In some examples, the rectangular sound-damping function manhole cover also has a sound insulation layer, specifically, the sound insulation layer includes a first sound insulation layer (not shown in the figure) arranged below the lower cover body 200, which is used to insulate the noise transmitted from the sewer to the road surface. And a second sound insulation layer is arranged between the upper cover body 100 and the road surface. It can be understood that in the prior art, because the manhole cover is in direct rigid contact with the ground, when the vehicle passes through the manhole cover, the manhole cover is pressed down by the wheels and knocks the ground to produce noise. In this example, the second sound insulation layer can provide cushioning to reduce noise. Specifically, the first and second sound insulation layers can be rubber, foam or other materials.

[0029] For example, it is understood with reference to Figure 1-2 .

[0030] As Figure 1 shown, the upper cover body 100 is a conventional circular manhole cover, a plurality of first through holes 120 are formed on the upper cover body 100, as described above, the first through holes 120 are connected to the chamber 300, and a first hinge part 130 is arranged at the edge of the upper cover body 100. The first hinge part 130 is a ring structure with a central hole. The first through holes 120 are used to pass rainwater, and in this example, the first through holes 120 are uniformly arrayed in the upper cover body 100; the first hinge part 130 is hinged to a hinge column fixed on the ground to form a rotary fixed structure, and a second through hole 140 is formed on the upper cover body 100. The second through hole 140 is arranged on the opposite side of the first hinge part 130, and the second through hole 140 is used to pass a hook. After the user passes the hook through the second through hole 140 and locks the hook with the second through hole 140, the manhole cover with sound-damping function is lifted and rotated around the first hinge part 130 to open and close.

[0031] It can be understood that in this example, the first through hole 120 is used to pass rainwater, and compared with the conventional manhole cover plate, it is a whole plate structure, and in this example, the structure has the function of passing rainwater. In some cases, for example, in heavy rain, the traditional manhole cover needs to be moved by workers to have a certain gap with the well mouth to play the function of drainage, but in this example, the rainwater can be directly passed through the first through hole 120.

[0032] Continuing to refer to Figure 2As shown in the cross-sectional structure, the manhole cover with a sound-absorbing function comprises the lower cover 200, the side wall 110 including an annular side wall 111 and a diamond-shaped side wall 112 extending from the lower side of the upper cover 100, and the lower edges of the annular side wall 111 and the diamond-shaped side wall 112 are both connected to the lower cover 200. The annular side wall 111 surrounds the diamond-shaped side wall 112. Specifically, the lower edges of the annular side wall 111 and the diamond-shaped side wall 112 are integrally formed with the lower cover 200.

[0033] In this example, the chamber 300 includes a first chamber 310 and a second chamber 320. Specifically, the upper and lower edges of the annular sidewall 111 are connected to the upper cover 100 and the lower cover 200, respectively, to form the first chamber 310. The diamond-shaped sidewall 112 and the upper and lower covers 100 and 200 are connected to form the second chamber 320. The second chamber 320 is disposed within the first chamber 310. The first through hole 120 connects to the first chamber 310 and the second chamber 320, so rainwater enters the first chamber 310 and the second chamber 320 after passing through the first through hole 120.

[0034] The structure in this embodiment can be further referred to Figure 3-4 It is understood that the lower cover body 200 is a trumpet-shaped structure, the small mouth end 210 is a closed mouth and is closed with the annular side wall 111 and the diamond side wall 112 to form the first chamber 310 and the second chamber 320. In this example, the small mouth end 210 is directly connected to the lower cover body 200 to form a closed structure; the large mouth end 220 of the trumpet-shaped structure is open, and the large mouth end 220 of the trumpet-shaped structure faces the sewer.

[0035] For better explanation, combine Figure 2 A first direction 510 and a second direction 520 are defined. The first direction 510 is a direction toward the top of the upper cover 100 , and the second direction 520 is a direction toward the bottom of the lower cover 200 . An angle is formed between the first direction 510 and the second direction 520 .

[0036] After entering the small mouth 210, the noise first enters the first chamber 310. At this time, the sound propagates in the first chamber 310. Due to the closed structure of the first chamber 310, the sound will be reflected multiple times in the chamber, and part of the sound energy will be absorbed by the chamber wall, thereby playing a preliminary sound-absorbing role.

[0037] Some of the sound then enters the second chamber 320 through the first through-hole 120. The second chamber 320 is formed by the connection of the diamond-shaped sidewalls 112, the upper cover 100, and the lower cover 200, and is located within the first chamber 310. The second chamber 320 is independent of the first chamber 310 but connected, further increasing the amount of reflection and attenuation experienced by the sound as it propagates within the different chambers. Within the second chamber 320, the sound also undergoes multiple reflections and absorptions, further reducing the sound energy and achieving a further sound-absorbing effect.

[0038] As mentioned above, the dual silencing effects of the first chamber 310 and the second chamber 320 can significantly reduce the noise coming from the sewer, so that the chamber formed between the upper cover 100 and the lower cover 200 can not only effectively drain water but also achieve efficient noise control.

[0039] Continue to refer Figure 4 To understand this example, the annular side wall 111 and the diamond side wall 112 are respectively provided with a first side hole 311 and a second side hole 321. The first side hole 311 connects the first chamber 310 with the outside, and the second side hole 321 connects the first chamber 310 with the second chamber 320. The first side hole 311 is a long strip-shaped hole, and four first side holes 311 are evenly spaced on the annular side wall 111 (not all of which are shown in the figure). The diamond side wall 112 includes six wall surfaces, each of which has two second side holes 321 (not all of which are shown in the figure). It can be understood that rainwater enters the first chamber 310 and the second chamber 320 after passing through the first through hole 120, and the rainwater in the first chamber 310 and the second chamber 320 continues to flow downward through the first side hole 311 and the second side hole 321.

[0040] Continue to refer Figure 3 In the structure shown, in this example, the upper cover 100 further extends an outer wall 113, which surrounds the annular side wall 111, the diamond-shaped side wall 112, and the lower cover 200. A first gap 400 is left between the lower edge of the lower cover 200 and the lower edge of the outer wall 113, and the first gap 400 is used to pass rainwater.

[0041] As mentioned above, in this example, when rainwater enters the first chamber 310, it will flow into the outside through the first side hole 311 on the annular side wall 111, and then the rainwater will enter the second chamber 320 through the second side hole 321 on the diamond side wall 112. Through the multiple second side holes 321 set on the six wall surfaces, rainwater can flow freely between the two chambers.

[0042] Continue to refer Figure 3With this structure, rainwater in the second chamber 320 flows downward through the second side hole 321, that is, it flows under the lower cover 200. A first gap 400 is left between the lower edge of the lower cover 200 and the lower edge of the outer wall 113. Rainwater enters the sewer through this first gap 400. Due to the presence of first gap 400, rainwater can flow smoothly under the manhole cover.

[0043] Continue to combine Figure 2 and Figure 4 The structure shown in FIG. 1 includes the first side hole 311 and the second side hole 321 (the second side hole 321 is located at Figure 2 There is a first distance between the upper cover 100 and the upper cover 100, which is positioned as d1. Figure 2 Specifically, the distance between the lower hole wall at the hole channel of the first side hole 311 and the lower side surface of the upper cover body 100 is the first distance d1 defined in this example. It is not difficult to understand that the distance between the lower hole wall at the hole channel of the first side hole 311 and the lower side surface of the upper cover body 100 is the first distance d1 defined in this example. It is not difficult to understand that the size of the first distance d1 directly determines the water level height of the stored water. Specifically, when rainwater enters the first chamber 310 and the second chamber 320 through the first through hole 120, the water level will gradually rise until it reaches the height of the first side hole 311.

[0044] Because first side hole 311 is connected to the outside, when the water level rises to the opening of first side hole 311, excess rainwater will flow out through first side hole 311, preventing the water level from rising further. Therefore, first distance d1 effectively acts as a water storage level limit, ensuring that rainwater in the manhole cover chamber can be drained promptly during heavy rain, preventing water accumulation.

[0045] Combine Figure 2 and Figure 4 As shown in the structure, it can be seen that the layout and number of the first side hole 311 and the second side hole 321 also optimize the flow and discharge of rainwater. Through the reasonable distribution of multiple side holes, rainwater can be evenly distributed and discharged in the chamber.

[0046] As mentioned above, even after the rain stops, a certain amount of rainwater will still remain in the first chamber 310 and the second chamber 320. In different examples, the heights of the first side hole 311 and the second side hole 321 can be different. The example structures described below will continue to be based on the case where the heights are the same.

[0047] Within first chamber 310, after multiple reflections and attenuation, some of the sound waves enter second chamber 320 through the through-hole. A certain amount of rainwater also exists within second chamber 320, further enhancing the absorption and attenuation of the sound waves. Furthermore, during the propagation process, sound continuously transfers back and forth between the two chambers, with each transfer further reducing the sound energy. After multiple reflections, absorption, and attenuation, the final transmitted noise is significantly reduced, achieving the desired sound attenuation effect.

[0048] In some cases, the manhole cover needs to be applied on a road surface, so when the first chamber 310 and the second chamber 320 are provided, the structural strength of the manhole cover should be ensured. Figure 4 In the structure shown, the lower side of the upper cover body 100 in this example further extends with a plurality of first ribs 151 and second ribs 152, and an annular fixing ring 160 disposed at the center of the upper cover body 100. The two ends of the first rib 151 in the longitudinal direction are respectively fixed to the diamond-shaped side wall 112 and the annular fixing ring 160, wherein the narrow end of the first rib 151 is fixed to the annular fixing ring 160 and the wide end is fixed to the first side wall. The two ends of the second rib 152 in the longitudinal direction are respectively fixed to the outer side wall 113 and the first side wall, wherein the narrow end of the second rib 152 is fixed to the outer side wall 113 and the wide end is fixed to the first side wall. The annular side wall 111 is provided with a plurality of first notches 114, which are fixedly connected to the middle section of the second rib 152.

Claims

1. A manhole cover with a sound-absorbing function, characterized in that: include: An upper cover (100) and a lower cover (200), wherein the upper cover (100) is used to be fixed to the road surface, and the lower side of the lower cover (200) faces the sewer; At least one side wall (110) extends from the lower side of the upper cover body (100), and the lower edge of the side wall (110) is provided with the lower cover body (200); Wherein, the side wall (110) is connected to the upper cover (100) and the lower cover (200) to form a chamber (300); The lower cover (200) is further provided with a sound insulation layer, which comprises a first sound insulation layer arranged below the lower cover (200) and a second sound insulation layer arranged between the upper cover (100) and the road surface.

2. The manhole cover with a sound-absorbing function according to claim 1, characterized in that: A plurality of first through holes (120) are provided on the upper cover (100), and the first through holes (120) are connected to the chamber (300). Side holes are also provided on the side wall (110), and the side holes connect the chamber (300) with the sewer.

3. The manhole cover with a sound-absorbing function according to claim 2, characterized in that: The sound insulation layer is made of rubber or foam.

4. The manhole cover with a sound-absorbing function according to claim 2, characterized in that: The side wall (110) comprises an annular side wall (111) and a diamond-shaped side wall (112) extending from the lower side of the upper cover body (100), wherein the annular side wall (111) is arranged around the outer side of the diamond-shaped side wall (112).

5. The manhole cover with a sound-absorbing function according to claim 4, characterized in that: The chamber (300) includes a first chamber (310) and a second chamber (320); The upper and lower edges of the annular side wall (111) are respectively connected to the upper cover body (100) and the lower cover body (200) to form a first chamber (310), and the rhombus side wall (112) and the upper cover body (100) and the lower cover body (200) are connected to form a second chamber (320), and the second chamber (320) is arranged in the first chamber (310).

6. The manhole cover with a sound-absorbing function according to claim 5, characterized in that: The side holes include a first side hole (311) and a second side hole (321); The first side hole (311) is provided on the annular side wall (111), and the second side hole (321) is provided on the rhombus side wall (112). The first side hole (311) connects the first chamber (310) with the outside, and the second side hole (321) connects the first chamber (310) with the second chamber (320).

7. The manhole cover with a sound-absorbing function according to claim 4, characterized in that: The upper cover body (100) further extends an outer side wall (113), and the outer side wall (113) surrounds the annular side wall (111), the diamond-shaped side wall (112), and the lower cover body (200); A first gap (400) is left between the lower edge of the lower cover (200) and the lower edge of the outer side wall (113).

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