Inspection well cover capable of controlling abnormal sound

Abstract

The utility model belongs to the field of municipal engineering, and particularly relates to an abnormal sound control manhole cover which comprises a cover plate and a well seat, a plurality of special-shaped notches are formed in the periphery of an annular groove in the supporting face of the well seat, and a damping gasket matched with the annular groove in shape is embedded in the annular groove. A plurality of rectangular grooves are formed in the periphery of the side wall of the well base, L-shaped damping cushion blocks are embedded in the rectangular grooves, and protruding blocks of the L-shaped damping cushion blocks abut against the side wall of the cover plate. The damping gasket and the groove are tightly clamped and are not prone to falling off, and the problem of vibration sound caused by falling off or damage of an existing damping gasket is solved. And meanwhile, the side wall of the cover plate is in direct contact with the L-shaped damping cushion blocks, abnormal sound generated by friction between the side wall of the cover plate and the well base is reduced, and the vibration sound problem of the manhole cover is further relieved.

Description

Technical Field

[0001] This utility model belongs to the field of municipal engineering, and in particular relates to a manhole cover for controlling abnormal noise. Background Technology

[0002] Manhole covers consist of a cover plate and a base, connected by a pivot. Manhole covers are often located in motor vehicle lanes or non-motor vehicle lanes. When vehicles pass over them, the covers commonly vibrate. If the vibration is caused by missing or damaged damping washers, the noise can be quite loud, causing noise pollution. The main reason for the frequent loss or damage of damping washers between the cover plate and the base is the weak engagement between the washer and the groove below the washer. This allows the washer to easily slip out of the groove after a period of use, failing to provide damping. Therefore, existing manhole covers need to be redesigned to reduce vibration between the cover plate and the base. Summary of the Invention

[0003] The problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a manhole cover for controlling abnormal noise.

[0004] This invention is achieved through the following technical solution:

[0005] A manhole cover for controlling abnormal noise includes a cover plate and a base. The support surface of the base has a ring groove with several irregularly shaped notches evenly distributed around its circumference. A shock-absorbing washer matching the shape of the ring groove is embedded in the ring groove. The side wall of the base has several rectangular grooves evenly distributed around its circumference. The upper surface of the rectangular groove is lower than the upper surface of the base, and the lower surface of the rectangular groove is higher than the upper surface of the shock-absorbing washer. An L-shaped shock-absorbing block is embedded in the rectangular groove. The L-shaped shock-absorbing block includes a rectangular block matching the shape of the rectangular groove. A protrusion facing the center of the base is integrally provided at the bottom of the rectangular block, and the protrusion abuts against the side wall of the cover plate.

[0006] Preferably, the thickness of the protrusion gradually increases downwards, and the side of the protrusion that abuts against the side wall of the cover plate is an arc-shaped surface.

[0007] Preferably, the irregularly shaped notch is an irregular quadrilateral.

[0008] Preferably, the L-shaped shock-absorbing pad is a rubber block.

[0009] Preferably, the L-shaped shock-absorbing pad is fixed in the rectangular groove by adhesive.

[0010] The vibration-damping washer of this invention for manhole covers can be better embedded in the groove, and the vibration-damping washer and the groove are tightly locked together, making it less likely to fall off, thus solving the vibration noise caused by the detachment or damage of existing vibration-damping washers. At the same time, this invention provides L-shaped vibration-damping blocks on the side wall of the manhole base, allowing the side wall of the cover to directly contact the L-shaped vibration-damping blocks, reducing the abnormal noise generated by friction between the side wall of the cover and the manhole base, further mitigating the vibration problem of the manhole cover. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0012] Figure 2 This is a top view of the overall structure of this embodiment;

[0013] Figure 3 This is a schematic diagram of the disassembled shock-absorbing washer in this embodiment;

[0014] Figure 4 This is a top view of the structure after the shock-absorbing washer has been removed in this embodiment;

[0015] Figure 5 This is a schematic diagram of the shock-absorbing washer structure in this embodiment;

[0016] Figure 6 This is an enlarged structural diagram of the L-shaped shock-absorbing pad after it has been removed from the rectangular groove in this embodiment;

[0017] Figure 7 This is an enlarged structural diagram of the rectangular groove after installing the L-shaped shock-absorbing pad in this embodiment;

[0018] Figure 8 This is a schematic diagram of the L-shaped shock-absorbing pad structure in this embodiment.

[0019] In the diagram, 1 is the well base, 2 is the annular groove, 3 is the irregular notch, 4 is the shock-absorbing washer, 5 is the rectangular groove, 6 is the L-shaped shock-absorbing pad, 7 is the rectangular block, and 8 is the protrusion. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0021] The manhole cover of this embodiment includes a cover plate and a manhole base 1. The cover plate is not shown in the accompanying drawings; only the manhole base 1 is depicted. This embodiment is an improvement on the existing manhole base 1. The improvement lies in the following: several irregularly shaped notches 3 are evenly distributed around the annular groove 2 on the support surface of the manhole base 1. A shock-absorbing washer 4, matching the shape of the annular groove 2, is embedded within the annular groove 2. In traditional manhole bases, the annular groove 2 on the support surface is a regular ring, and the shock-absorbing washer 4 is also a conventional annular ring. This traditional design makes it easy for the shock-absorbing washer 4 to slip out of the annular groove 2 under repeated vehicle pressure, resulting in the washer 4 being missing or damaged, thus causing the shock-absorbing washer 4 to fail. This results in direct contact between the cover plate and the support surface of the manhole base 1, causing abnormal noise during vibration. In this embodiment, an irregularly shaped notch 3 is provided on the annular groove 2. The irregularly shaped notch 3 is an irregular quadrilateral. The irregularly shaped notch 3 makes the matching shock-absorbing washer 4 also irregularly shaped. The irregularly shaped notch 3 allows the shock-absorbing washer 4 to be more tightly embedded in the annular groove 2, making it less likely to slip out of the annular groove 2, thereby avoiding abnormal noise caused by direct contact between the bottom surface of the cover plate and the support surface of the well seat 1.

[0022] Another improvement in this embodiment is that several rectangular grooves 5 are evenly arranged around the side wall of the well base 1. In this embodiment, four rectangular grooves 5 are provided. The rectangular grooves 5 do not penetrate the well base 1. The upper surface of the rectangular groove 5 is lower than the upper surface of the well base 1, and the lower surface of the rectangular groove 5 is higher than the upper surface of the shock-absorbing washer 4. The rectangular groove 5 is located in the middle between the upper surface of the well base 1 and the shock-absorbing washer 4. An L-shaped shock-absorbing pad 6 is embedded in the rectangular groove 5. The L-shaped shock-absorbing pad 6 includes a rectangular block 7 that matches the shape of the rectangular groove 5. A protrusion 8 facing the center of the well base 1 is integrally provided at the bottom of the rectangular block 7. The protrusion 8 can abut against the side wall of the cover plate. Since there is a gap of about 1.5-2mm between the cover plate and the side wall of the well base 1, the protrusion 8 is located exactly in this gap. In this embodiment, the thickness of the protrusion 8 gradually increases downwards, and the side of the protrusion 8 that abuts against the side wall of the cover plate is an arc-shaped surface, so that the cover plate can slide down naturally when it is lowered. In this embodiment, the L-shaped shock-absorbing pad 6 is preferably made of rubber. The L-shaped shock-absorbing pad 6 can be fixed in the rectangular groove 5 with adhesive, or the rectangular block 7 of the L-shaped shock-absorbing pad 6 can be directly inserted into the rectangular groove 5. Since the upper and lower surfaces of the rectangular groove 5 are sealed, the rectangular block 7 will not fall out of the rectangular groove 5 when the cover is lowered or lifted.

[0023] In this embodiment, an irregularly shaped notch 3 is provided on the annular groove 2, which allows the shock-absorbing washer 4 to be more tightly embedded inside, making it less likely to fall off. This avoids the vibration between the cover plate and the manhole seat 1 caused by the shock-absorbing washer 4 falling off. At the same time, an L-shaped shock-absorbing block 6 is provided on the side wall of the manhole seat 1. The L-shaped shock-absorbing block 6 can not only fill the gap between the side wall of the cover plate and the side wall of the manhole seat 1, but also prevent the cover plate from moving during the rolling process and causing vibration caused by colliding with the side wall of the manhole seat 1. This avoids the vibration problem of the inspection manhole cover from multiple aspects and prevents noise pollution.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; those skilled in the art should understand that modifications can still be made to the technical solutions described in the above embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A manhole cover for controlling abnormal noise, comprising a cover plate and a manhole base (1), characterized in that: The annular groove (2) on the support surface of the well seat (1) is uniformly provided with several irregularly shaped notches (3) around its circumference. A shock-absorbing washer (4) matching the shape of the annular groove (2) is embedded in the annular groove (2). A number of rectangular grooves (5) are uniformly provided around the side wall of the well seat (1). The upper surface of the rectangular groove (5) is lower than the upper surface of the well seat (1), and the lower surface of the rectangular groove (5) is higher than the upper surface of the shock-absorbing washer (4). An L-shaped shock-absorbing pad (6) is embedded in the rectangular groove (5). The L-shaped shock-absorbing pad (6) includes a rectangular block (7) matching the shape of the rectangular groove (5). A protrusion (8) facing the center of the well seat (1) is integrally provided at the bottom of the rectangular block (7). The protrusion (8) abuts against the side wall of the cover plate.

2. The manhole cover for controlling abnormal noise according to claim 1, characterized in that: The thickness of the protrusion (8) gradually increases downwards, and the side of the protrusion (8) that abuts against the side wall of the cover plate is an arc-shaped surface.

3. The manhole cover for controlling abnormal noise according to claim 1, characterized in that: The irregular notch (3) is an irregular quadrilateral.

4. The manhole cover for controlling abnormal noise according to claim 1, characterized in that: The L-shaped shock-absorbing pad (6) is a rubber block.

5. The manhole cover for controlling abnormal noise according to claim 1, characterized in that: The L-shaped shock-absorbing pad (6) is fixed in the rectangular groove (5) by adhesive.

Images