Well lid noise reduction structure and well lid thereof

Abstract

The utility model provides a well lid noise reduction structure and well lid thereof, the well lid noise reduction structure includes well frame, cover and adhesive tape, well frame has center hole, and the hole wall of center hole is equipped with step face, and step face is opened the trapezoidal groove of trapezoidal cross section, the cross section of adhesive tape is T-shaped, including horizontal edge part and vertical edge part, and the upper end of vertical edge part is connected with horizontal edge part, vertical edge part is embedded in trapezoidal groove, and horizontal edge part is located outside trapezoidal groove and covers the entire width of step face, and cover is pressed on horizontal edge part, the utility model can effectively avoid the sound produced by the direct contact between cover and well frame.

Description

Technical Field

[0001] This utility model relates to manhole covers, and more particularly to noise reduction technology for manhole covers. Background Technology

[0002] Most existing manhole covers are equipped with noise reduction structures. Figure 1 A cross-sectional structural diagram of an existing manhole cover noise reduction structure is shown. Figure 1 As shown, the noise reduction structure of the manhole cover includes a manhole frame 1, a cover plate 2, and a rubber strip 3a. The manhole frame 1 has a central hole 10, and the wall of the central hole 10 has a stepped surface 11. The stepped surface 11 has a trapezoidal groove 113 with a trapezoidal cross-section. The rubber strip 3a has a trapezoidal cross-section, with its lower part embedded in the trapezoidal groove 113 and its top extending out of the trapezoidal groove 113. The cover plate 2 presses on the top of the rubber strip 3a. The top of the rubber strip 3a is used to prevent the cover plate 2 from colliding with the manhole frame 1 and making noise, thereby achieving the effect of noise reduction.

[0003] The existing rubber strip 3a is limited by its shape and has only a small protrusion in the middle of the step surface, which cannot completely cover the step surface 11. In addition, the trapezoidal groove 113 sometimes has a machining accuracy deviation, so it cannot ensure that the cover plate 2 is completely seated on the rubber strip 3a when closed, which results in the rubber strip 3a not being able to completely isolate the noise caused by the collision between the cover plate 2 and the well frame 1.

[0004] In addition, after being subjected to long-term temperature changes and rainwater and sewage erosion, the material of the rubber strip 3a will age. In addition, the thickness of the top of the existing rubber strip 3a is relatively small. After long-term compression of the rubber strip 3a, the top of the rubber strip 3a can easily be flattened to be flush with the step surface 11 of the well frame 1. At this time, the rubber strip 3a will also lose its noise reduction function. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a noise reduction structure for a manhole cover and the manhole cover thereof, which can effectively avoid the noise generated by direct contact between the cover plate and the manhole frame.

[0006] Another technical problem to be solved by this utility model is to provide a noise reduction structure for a manhole cover and the manhole cover thereof, wherein the rubber strip in the noise reduction structure and the manhole cover is not easy to fall off the manhole frame.

[0007] A noise reduction structure for a manhole cover according to an embodiment of the present invention includes a manhole frame, a cover plate, and a rubber strip. The manhole frame has a central hole, and the wall of the central hole is provided with a stepped surface. The stepped surface has a trapezoidal groove with a trapezoidal cross-section. The rubber strip has a T-shaped cross-section, including a horizontal side and a vertical side. The upper end of the vertical side is connected to the horizontal side. The vertical side is embedded in the trapezoidal groove, and the horizontal side is located outside the trapezoidal groove and covers the entire width of the stepped surface. The cover plate presses on the horizontal side.

[0008] In the aforementioned noise reduction structure for manhole covers, the thickness of the transverse edge is 2mm to 3mm.

[0009] The aforementioned noise reduction structure for manhole covers has a spindle-shaped vertical side whose width gradually decreases from the middle to both ends.

[0010] This utility model also provides a manhole cover, which includes the aforementioned manhole cover noise reduction structure.

[0011] The embodiments of this utility model have at least the following advantages: 1. Compared with the prior art, the cross-sectional shape of the rubber strip in this embodiment of the utility model is changed from trapezoidal to T-shaped. The horizontal edge of the rubber strip covers the entire width of the well frame step surface. In this way, when the cover is closed, it can fall entirely on the horizontal edge of the rubber strip, thereby effectively preventing the cover from directly contacting the well frame and making noise. 2. The thickness of the horizontal edge of the rubber strip in this embodiment is between 2 and 3 mm. Even if it ages or is squeezed for a long time, the top surface of the horizontal edge will not be flattened by the cover plate to be flush with the step surface of the well frame, thereby avoiding the direct contact between the cover plate and the step surface and the noise generated. 3. In this embodiment of the utility model, the vertical edge of the adhesive strip is spindle-shaped, which can be firmly stuck in the trapezoidal groove to ensure that the adhesive strip will not fall off the well frame. Attached Figure Description

[0012] Figure 1 A cross-sectional schematic diagram of an existing manhole cover noise reduction structure is shown.

[0013] Figure 2 A cross-sectional structural schematic diagram of a noise reduction structure for a manhole cover according to an embodiment of the present invention is shown.

[0014] Figure 3 A front view schematic diagram of an adhesive strip according to an embodiment of the present invention is shown.

[0015] Figure 4 It shows Figure 3 AA sectional view.

[0016] Figure 5 It shows Figure 4 A magnified view of part P. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 2 A cross-sectional structural schematic diagram of a manhole cover noise reduction structure according to an embodiment of the present invention is shown. Figures 3 to 5 The structure of an adhesive strip according to an embodiment of the present invention is shown below. Please refer to [the diagram]. Figures 2 to 5The noise reduction structure of the manhole cover according to the first embodiment of this utility model includes a manhole frame 1, a cover plate 2, and a rubber strip 3.

[0019] The well frame 1 has a central hole 10, and the wall of the central hole 10 is provided with a stepped surface 11. The stepped surface 11 has a trapezoidal groove 113 with a trapezoidal cross-section. The rubber strip 3 has a T-shaped cross-section, including a horizontal side 31 and a vertical side 32. The upper end of the vertical side 32 is connected to the horizontal side 31.

[0020] The vertical edge 32 is embedded in the trapezoidal groove 113, and the horizontal edge 31 is located outside the trapezoidal groove 113 and covers the entire width of the step surface 11. The cover plate 2 presses on the horizontal edge 31. Since the horizontal edge 31 of the rubber strip 3 covers the entire width of the well frame step surface 11, when the cover plate 2 is closed, it can fall entirely on the horizontal edge 31 of the rubber strip, thereby effectively preventing the cover plate 2 from directly contacting the well frame 1 and generating noise.

[0021] In this embodiment, the top surface of the horizontal side 31 is a plane.

[0022] In this embodiment, the thickness t of the transverse edge 31 of the rubber strip 3 is 2 to 3 mm. Even if the rubber strip ages or is squeezed for a long time, the top surface of the transverse edge 31 will not be flattened by the cover plate 2 to be flush with the step surface 11 of the well frame 1, thereby avoiding direct contact between the cover plate 2 and the step surface 11 and the noise generated.

[0023] In this embodiment, the vertical side 32 is spindle-shaped, with its width gradually decreasing from the middle to both ends. The term "middle" does not specifically refer to the midpoint of the vertical side 32's height, but rather to its position relative to the top and bottom ends of the vertical side 32. Figure 5 In the example, the vertical side 32 is composed of a trapezoidal part 321 and an inverted trapezoidal part 322. The trapezoidal part 321 and the inverted trapezoidal part 322 are connected from top to bottom. The length L1 of the trapezoidal part 321 is greater than the length L2 of the inverted trapezoidal part 322.

[0024] The advantage of designing the vertical side 32 as a spindle shape is that it ensures the adhesive strip 3 is firmly secured within the trapezoidal groove 113, preventing it from falling off the well frame 1. When installing the adhesive strip 3, place the spindle-shaped vertical side 32 into the trapezoidal groove 113, and then forcefully or by using a tool to push the vertical side 32 into the groove, thus completing the installation of the adhesive strip 3.

[0025] In this embodiment, the adhesive strip 3 is a rubber strip.

[0026] In this embodiment, the trapezoidal groove 113 is an annular groove and the adhesive strip 3 is annular, but it is not limited to this. In other embodiments, the adhesive strip 3 can also be elongated.

[0027] This utility model also provides a manhole cover, which includes the aforementioned manhole cover noise reduction structure.

[0028] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A noise reduction structure for a manhole cover, comprising a manhole frame, a cover plate, and a rubber strip, wherein the manhole frame has a central hole, the wall of the central hole has a stepped surface, and the stepped surface has a trapezoidal groove with a trapezoidal cross-section, characterized in that, The cross-section of the adhesive strip is T-shaped, including a horizontal side and a vertical side, with the upper end of the vertical side connected to the horizontal side; The vertical side is embedded in the trapezoidal groove, the horizontal side is located outside the trapezoidal groove and covers the entire width of the step surface, and the cover plate presses on the horizontal side.

2. The manhole cover noise reduction structure as described in claim 1, characterized in that, The width of the horizontal edge is equal to the width of the step surface.

3. The manhole cover noise reduction structure as described in claim 1, characterized in that, The thickness of the transverse edge is 2mm to 3mm.

4. The manhole cover noise reduction structure as described in claim 1, characterized in that, The top surface of the horizontal edge is a plane.

5. The manhole cover noise reduction structure as described in claim 1, characterized in that, The vertical side is spindle-shaped with its width gradually decreasing from the middle to both ends.

6. The manhole cover noise reduction structure as described in claim 5, characterized in that, The vertical side is composed of a trapezoidal part and an inverted trapezoidal part, which are connected sequentially from top to bottom. The length of the trapezoidal part is greater than the length of the inverted trapezoidal part.

7. The manhole cover noise reduction structure as described in claim 1, characterized in that, The rubber strip mentioned is a rubber strip.

8. A manhole cover, characterized in that, Including the manhole cover noise reduction structure as described in any one of claims 1 to 7.

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