Mute well lid assembly

Abstract

The mute well lid assembly comprises a well ring, a fastener and a well lid, the well ring is arranged on the ground, the fastener is arranged on the well ring, and the well lid is arranged on the fastener; a first conical surface is arranged on the inner wall of the walling crib, the fastener is of an annular structure, a second conical surface is arranged on the outer wall of the fastener, and an opening is formed in the fastener; the first conical surface is matched with the second conical surface, and the well lid is clamped and fixed through a fastener. The fastening piece is arranged between the well lid and the well ring, the fastening piece is matched with the well ring through the conical surface, and axial pressure generated when a vehicle passes through is converted into radial clamping force, so that the well lid and the well ring are tightly fixed, and noise is reduced. The cushion layer is arranged on the conical surface and used for absorbing energy, and noise is further reduced. The fastener is in threaded connection with the well lid, the relative position of the fastener and the well lid can be adjusted, the height position of the well lid after installation is adjusted, and the defect that the well lid is too low due to follow-up well lid sinking is overcome.

Description

Technical Field

[0001] The invention relates to the field of power grid accessories, and in particular to a silent manhole cover assembly. Background Art

[0002] With the continuous development of the city, cables are buried underground from electric poles. In order to facilitate the subsequent maintenance of the cables, cable wells need to be set up continuously, and the upper openings need to be closed by manhole covers. The installation location of the manhole cover will inevitably appear on the road where pedestrians and vehicles pass, and after the car passes over, it will generate a lot of noise, affecting the normal life of the surrounding residents. Summary of the invention

[0003] In view of the defects of the above prior art, the main purpose of the present invention is to overcome the shortcomings of the prior art, and discloses a silent manhole cover assembly, including a manhole ring, a fastener and a manhole cover, wherein the manhole ring is arranged on the ground, the fastener is arranged on the manhole ring, and the manhole cover is arranged on the fastener;

[0004] The inner wall of the well ring is provided with a first conical surface, the fastener is an annular structure, the outer wall of the fastener is provided with a second conical surface, and the fastener is provided with an opening; the first conical surface cooperates with the second conical surface, and the well cover is clamped and fixed by the fastener.

[0005] Furthermore, the first conical surface and the second conical surface have the same taper.

[0006] Furthermore, the manhole cover is provided with an external thread, the inner wall of the fastener is provided with an internal thread, and the external thread matches the internal thread.

[0007] Furthermore, a positioning portion is extended from the lower end of the manhole ring, and a gasket is arranged on the positioning portion; and the lower end of the manhole cover is placed in the gasket.

[0008] Furthermore, the gasket is made of plastic.

[0009] Furthermore, a rib is protruding from the upper surface of the well ring, and a gap is provided between the well cover and the rib.

[0010] Furthermore, the well ring is provided with a radially protruding fixed edge.

[0011] Furthermore, a through hole is arranged on the fixed edge around the axial direction thereof.

[0012] Beneficial effects achieved by the present invention:

[0013] The present invention converts the axial pressure of the vehicle passing through the manhole cover into a radial clamping force by arranging a fastener between the manhole cover and the manhole ring, and the fastener cooperates with the manhole ring through a conical surface, so that the manhole cover and the manhole ring are tightly fixed, reducing the generation of noise. A cushion layer is arranged on the conical surface for absorbing energy, further reducing the generation of noise. The fastener is connected to the manhole cover by a thread, and the relative position of the fastener and the manhole cover can be adjusted, and the height position of the manhole cover after installation can be adjusted to overcome the manhole cover being too low due to the subsequent sinking of the manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of a silent manhole cover assembly of the present invention;

[0015] Figure 2 It is a cross-sectional view of a silent manhole cover assembly of the present invention;

[0016] Figure 3 An exploded view of a silent manhole cover assembly of the present invention;

[0017] Figure 4 It is a structural schematic diagram of the well circle;

[0018] The reference numerals are as follows:

[0019] 1. Manhole ring, 2. Fastener, 3. Manhole cover, 11. First conical surface, 12. Retaining edge, 13. Positioning portion, 14. Washer, 15. Fixed edge, 16. Through hole, 21. Second conical surface, 22. Opening, 31. External thread. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] Engineers conducted research on the noise problem and determined that the noise was caused by the fact that the manhole cover and the manhole ring were not tightly connected, there was a gap, and the two collided, thus generating noise.

[0022] Therefore, the present invention proposes a silent manhole cover assembly, such as Figure 1-Figure 4 As shown, it includes a manhole ring 1, a fastener 2 and a manhole cover 3. The manhole ring 1 is set on the ground, the fastener 2 is set on the manhole ring 1, and the manhole cover 3 is set on the fastener 2; the manhole cover 3 is self-locking through the fastener 2, that is, the more it is pressed, the tighter it is.

[0023] Specifically, the inner wall of the well ring 1 is provided with a first conical surface 11, the fastener 2 is an annular structure, the outer wall of the fastener 2 is provided with a second conical surface 21, and the fastener 2 is provided with an opening 22; the first conical surface 11 cooperates with the second conical surface 21, and the manhole cover 3 is clamped and fixed by the fastener 2. Among them, the fastener 2 is a C-shaped structure, and the opening 22 is provided so that the size of the fastener 2 can be changed, thereby clamping the manhole cover 3. When in use, the relative position of the fastener 2 and the manhole cover 3 is adjusted, and then the fastener is placed in the well ring 1, and the manhole cover 3 is pressed axially, and the first conical surface 11 and the second conical surface 21 cooperate to clamp the manhole cover 3 by the fastener 2.

[0024] In the above embodiment, if Figure 1-Figure 4 As shown, the first conical surface 11 and the second conical surface 21 have the same taper. Through the matching of the inclined surfaces, the downward thrust is converted into a radial force, which then reacts on the fastener 2 to clamp and fix the manhole cover 3. Preferably, the first conical surface 11 is covered with a cushion layer. It plays a buffering role. The cushion layer can be plastic.

[0025] In one embodiment, if Figure 1-Figure 4 As shown, the manhole cover 3 is provided with an external thread 31, and the inner wall of the fastener 2 is provided with an internal thread, and the external thread 31 matches the internal thread. The fastener 2 is connected to the manhole cover 3 through the thread to ensure the relative position between the manhole cover 3 and the fastener 2. That is, the manhole cover 3 is installed at a height position on the manhole ring 1 to ensure that the surface of the manhole cover 3 is flush with the ground.

[0026] In one embodiment, if Figure 1-Figure 4 As shown, a positioning portion 13 is extended from the lower end of the well collar 1, and a gasket 14 is arranged on the positioning portion 13; the lower end of the manhole cover 3 is placed in the gasket 14. The positioning portion 13 is an annular structure, and the electric ring is fixed on the inner wall of the positioning portion 13, and is cushioned between the manhole cover 3 and the positioning portion 13. The positioning of the manhole cover 3 is achieved through the positioning portion 13 to ensure the relative position of the manhole cover 3 and the well collar 1, so that the first cone surface 11 and the second cone surface 21 are matched. When in use, the lower end of the manhole cover 3 is placed in the gasket 14. The gasket 14 is used to reduce the impact of the manhole cover, achieve energy absorption, and reduce the generation of noise.

[0027] In the above embodiment, if Figure 1-Figure 4 As shown, the gasket 14 is plastic.

[0028] In one embodiment, if Figure 1-Figure 4 As shown, a rib 12 is convexly provided on the upper surface of the well ring 1, and a gap is provided between the well cover 3 and the rib 12. The rib 12 is provided to prevent construction materials from falling into the first cone surface 11 during construction, thereby affecting subsequent installation. At the same time, the gap between the well cover 3 and the rib 12 can prevent the collision between the two and generate noise.

[0029] In one embodiment, if Figure 1-Figure 4As shown, the well ring 1 is radially protruded with a fixing edge 15. The well ring 1 is installed at the cable well head, and the fixing edge 15 is used to fix the well ring 1 to the ground.

[0030] In the above embodiment, if Figure 1-Figure 4 As shown, a through hole 16 is provided on the fixing edge 15 around its axial direction, thereby increasing the fixation of the well ring and the ground.

[0031] When the present invention is used, Figure 1-Figure 4 As shown, the fastener 2 and the manhole cover 3 are installed together, and the relative position of the fastener 2 on the manhole cover 3 is adjusted, and then the manhole cover 3 is covered on the manhole ring 1, and the lower end of the manhole cover 3 is placed in the positioning portion 14. In subsequent use, the manhole cover 3 can be tightly fixed to the manhole ring 1. Reduce the generation of noise.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. If the present invention is modified or replaced by equivalents without departing from the spirit and scope of the present invention, they should all be included in the protection scope of the claims of the present invention.

Claims

1. A silent manhole cover assembly, characterized in that: It comprises a well ring, a fastener and a well cover, wherein the well ring is arranged on the ground, the fastener is arranged on the well ring, and the well cover is arranged on the fastener; The inner wall of the well ring is provided with a first conical surface, the fastener is an annular structure, the outer wall of the fastener is provided with a second conical surface, and the fastener is provided with an opening; the first conical surface cooperates with the second conical surface, and the well cover is clamped and fixed by the fastener.

2. A silent manhole cover assembly according to claim 1, characterized in that: The first tapered surface and the second tapered surface have the same taper.

3. A silent manhole cover assembly according to claim 1, characterized in that: The manhole cover is provided with an external thread, the inner wall of the fastener is provided with an internal thread, and the external thread matches the internal thread.

4. The silent manhole cover assembly according to claim 1, characterized in that: A positioning portion is extended from the lower end of the well ring, and a gasket is arranged on the positioning portion; the lower end of the well cover is placed in the gasket.

5. A silent manhole cover assembly according to claim 4, characterized in that: The gasket is made of plastic.

6. The silent manhole cover assembly according to claim 1, characterized in that: A retaining edge is convexly arranged on the upper surface of the well ring, and a gap is arranged between the well cover and the retaining edge.

7. The silent manhole cover assembly according to claim 1, characterized in that: The well ring is radially protruded with a fixing edge.

8. The silent manhole cover assembly according to claim 7, characterized in that: The fixed edge is provided with a through hole extending axially therefrom.

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