Well lid protection device for noise control

Abstract

The utility model relates to a well lid protection device for noise control, which belongs to the technical field of well lids and comprises a gasket arranged between a well body and a well lid body, the gasket comprises a base, and the cross section of the base is in the shape of a trapezoid with a narrow upper part and a wide lower part; reinforced fiber cloth and a steel wire are sequentially arranged in the base from top to bottom; the gasket further comprises an outer gasket lug integrally arranged with the base, the outer gasket lug is arranged on the edge of an outer ring at the top end of the base, the well lid body is installed at the top end of the base, and the outer gasket lug wraps the well lid body. According to the utility model, the stability when the gasket is extruded is improved, and meanwhile, the wear resistance and impact resistance of rubber are also improved.

Description

Technical Field

[0001] The utility model relates to a manhole cover protective device for noise control, belonging to the technical field of manhole covers. Background Art

[0002] With the rapid development of infrastructure construction, a large number of manholes have been installed on urban roads. However, due to issues with material design, manufacturing process, construction quality, and actual use, many manhole covers have become loose, sunken, or bulged. This not only causes vehicles to jump when passing through, but also causes unusual noises from the manhole covers, further increasing the frequency of maintenance.

[0003] Chinese utility model patent publication number CN204252166U discloses a manhole cover and anti-fall device. The reference example of the manhole cover consists of a cover body and a manhole seat. The cover body is wrapped with rubber strips on the sides and bottom of the cover body that contact the manhole seat. This reference example achieves shock resistance and noise reduction by wrapping the rubber strips on the sides and bottom of the cover body that contact the manhole seat. However, when a vehicle runs over the cover, the rubber strips are unstable and prone to slipping and falling into the manhole. Repeated driving by vehicles also causes the rubber strips to be repeatedly squeezed and worn by the manhole cover. The pure rubber strips are prone to cracking and breaking, quickly failing, and therefore urgently need improvement. Utility Model Content

[0004] In order to overcome the shortcomings of the above-mentioned prior art that the rubber strips are easy to fall off and break, the utility model designs a manhole cover protection device for noise control, which improves the stability of the gasket when it is squeezed, and also improves the wear resistance and impact resistance of the rubber.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A manhole cover protection device for noise control includes a gasket arranged between the manhole body and the manhole cover body, the gasket includes a base, the cross-section of the base is a trapezoid that is narrow at the top and wide at the bottom; reinforced fiber cloth and steel wire are arranged in sequence from top to bottom inside the base; the gasket also includes an outer pad ear integrally arranged with the base, the outer pad ear is arranged at the edge of the outer ring at the top end of the base, the manhole cover body is installed at the top end of the base, and the outer pad ear is arranged to wrap the manhole cover body.

[0007] Furthermore, an inner pad ear is vertically fixedly connected to the inner circle edge of the top end of the base.

[0008] Furthermore, two of the steel wires cross each other to form an X-shaped structure, and multiple X-shaped structures are evenly arranged inside the base along the circumferential direction; or two of the steel wires are perpendicular to each other to form a cross-shaped structure, and multiple cross-shaped structures are evenly arranged inside the base along the circumferential direction; or two of the steel wires are parallel to each other to form a parallel structure assembly, and multiple parallel structure assemblies are evenly arranged inside the base along the circumferential direction; the cross-section of the steel wire is circular.

[0009] Furthermore, the gap between the gasket and the well body is filled with filling glue.

[0010] Furthermore, the reinforcing fiber cloth is one of nylon cord cloth, polyester fiber, nylon 6, nylon 66, viscose fiber or Kevlar.

[0011] Furthermore, a mute mechanism is installed at the bottom end of the manhole cover body, and the mute mechanism includes a plurality of sound-absorbing panels, and a plurality of honeycomb holes are opened on the sound-absorbing panels, and each of the honeycomb holes is filled with sound-absorbing cotton.

[0012] Furthermore, each of the sound-absorbing panels is arranged in an array along a circumferential direction with the central axis of the manhole cover body as the rotation axis.

[0013] Furthermore, the sound absorbing panel is connected to the manhole cover body through a rotating mechanism, and the rotating mechanism includes a mounting tube fixed to the bottom end of the manhole cover body, a rotating sleeve ring rotatably sleeved outside the mounting tube, and a driving assembly for driving the rotating sleeve ring to rotate. A plurality of U-shaped mounting brackets are fixed on the outside of the rotating sleeve ring at even intervals along the circumferential direction, and each of the sound absorbing panels is connected to each U-shaped mounting bracket in a one-to-one correspondence.

[0014] Furthermore, the drive assembly includes a drive motor and a gear assembly, and the gear assembly includes a drive gear, an inner ring gear and two driven gears. The drive gear is arranged inside the mounting cylinder and is transmission-connected to the drive motor. The two driven gears are symmetrically arranged on both sides of the drive gear, and the driven gears are movable through the side wall of the mounting cylinder and are rotationally connected to the mounting cylinder. The inner ring gear is fixedly mounted on the top of the rotating sleeve ring, and the inner ring gear and the two driven gears are meshed.

[0015] Furthermore, the drive motor is installed at the bottom end of the mounting tube, the drive end of the drive motor is set upward and is transmission-connected to a drive shaft, the top end of the drive shaft rotates through the mounting tube and extends into the interior of the mounting tube, and the inner ring of the drive gear is fixedly sleeved with the drive shaft.

[0016] Compared with the prior art, the present invention has the following characteristics and beneficial effects:

[0017] 1. The base of the utility model adopts a trapezoidal cross-section design that is narrow at the top and wide at the bottom, which expands the bottom support area and disperses the compressive stress, thereby effectively preventing the gasket from shifting or deforming and improving the reliability of long-term use. At the same time, by wrapping the edge of the manhole cover with the outer pad ear and filling the gap with filling glue, the manhole cover can be prevented from directly hitting the well body, thereby effectively reducing noise; by arranging steel wire and reinforced fiber cloth inside the base, the wear resistance and impact resistance of the rubber are greatly improved, and the service life of the gasket is increased.

[0018] 2. The utility model is provided with an inner pad ear. When the manhole cover body is installed, the inner pad ear is stuck at the bottom end of the manhole cover body. It is suitable for different manhole cover structures, effectively improves the installation stability, and prevents the gasket from falling into the well body.

[0019] 3. The utility model sets up a sound-absorbing panel, opens a plurality of honeycomb holes on the sound-absorbing panel, and fills the honeycomb holes with sound-absorbing cotton, so that the sound waves are repeatedly reflected and refracted in the honeycomb holes, increasing the number of contacts between the sound waves and the hole walls and the sound-absorbing cotton, and dissipating the energy of the sound waves, thereby effectively reducing noise.

[0020] 4. The utility model drives the sound-absorbing panel to rotate around the mounting tube through a driving motor. When some impurities are absorbed on the surface of the honeycomb holes, the centrifugal force generated by the sound-absorbing panel rotating around the mounting tube can be used to throw out the impurities on the surface of the honeycomb holes, thereby preventing the impurities from clogging the honeycomb holes for a long time and reducing the noise reduction effect. At the same time, it can also reduce the frequency of manual cleaning and alleviate the maintenance burden. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the main structure of the first embodiment of the present utility model;

[0023] Figure 3 This is a schematic cross-sectional view of the first embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the installation structure of the first embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the second embodiment of the present utility model;

[0026] Figure 6 This is a schematic diagram of the main structure of the second embodiment of the present utility model;

[0027] Figure 7 This is a schematic cross-sectional view of the second embodiment of the present invention;

[0028] Figure 8This is a schematic diagram of the installation structure of the second embodiment of the present utility model;

[0029] Figure 9 This is a schematic cross-sectional view of the third embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the installation structure of the third embodiment of the present utility model;

[0031] Figure 11 This is a schematic diagram of the cooperation between the X-shaped structure and the base of the utility model;

[0032] Figure 12 This is a schematic diagram of the installation structure of the fourth embodiment of the present utility model;

[0033] Figure 13 This is a schematic diagram of the three-dimensional structure of the installation of the fourth embodiment of the mute mechanism of the present utility model;

[0034] Figure 14 This is a schematic structural diagram of a sound-absorbing panel according to a fourth embodiment of the present invention;

[0035] Figure 15 This is a schematic diagram of the arrangement structure of the steel wire of the fifth embodiment of the present utility model;

[0036] Figure 16 This is a schematic diagram of the arrangement structure of the steel wire in the sixth embodiment of the present utility model.

[0037] The figures are marked as follows: 100, gasket; 1, base; 2, outer pad ear; 3, inner pad ear; 4, filling glue; 200, manhole cover body; 300, manhole body; 400, mute mechanism; 5, mounting cylinder; 6, driving gear; 7, driven gear; 8, inner gear ring; 9, rotating sleeve ring; 10, driving shaft; 11, driving motor; 12, U-shaped mounting frame; 13, sound-absorbing panel; 14, honeycomb hole; 15, sound-absorbing cotton; 16, steel wire; 17, reinforced fiber cloth. DETAILED DESCRIPTION

[0038] The present invention will be described in more detail below with reference to the embodiments.

[0039] Example 1

[0040] See also Figure 1-Figure 4 The manhole cover protection device for noise control in this embodiment includes a gasket 100 arranged between the well body 300 and the manhole cover body 200, and the material of the gasket 100 is rubber.

[0041] The gasket 100 includes a base 1 , the cross section of the base 1 is a trapezoidal shape that is narrow at the top and wide at the bottom. The trapezoidal structure design of being narrow at the top and wide at the bottom effectively improves the stability of the base 1 when being squeezed.

[0042] Reinforcement fiber cloth 17 and steel wire 16 are sequentially arranged inside the base 1 from top to bottom. The strength of the base 1 can be effectively improved by the upper and lower arrangement of the reinforcement fiber cloth 17 and the steel wire 16 .

[0043] See also Figure 11 In this embodiment, two steel wires 16 cross each other to form an X-shaped structure, and multiple X-shaped structures are evenly arranged inside the base 1 along the circumferential direction. The implantation of the steel wires 16 greatly improves the wear resistance and impact resistance of the rubber, thereby effectively increasing the service life of the gasket 100. At the same time, arranging the steel wires 16 into multiple X-shaped structures can effectively disperse vertical pressure (such as vehicle rolling) to the four sides of the base 1, avoiding deformation caused by local stress concentration.

[0044] Among them, the X-shaped structure takes into account the strength and toughness in the longitudinal and transverse directions, and ensures the strength in the vertical direction, with stronger energy dissipation capacity and better quietness.

[0045] See also Figure 4 In this embodiment, the installation grooves between the manhole cover 200 and the manhole body 300 and the installation grooves between the base 1 and the manhole body 300 are filled with filling glue 4 to avoid rigid collision and further reduce noise.

[0046] In this embodiment, the base 1 adopts a trapezoidal cross-section design that is narrow at the top and wide at the bottom, which expands the bottom support area and disperses the compressive stress, thereby effectively preventing the gasket 100 from shifting or deforming, and improving reliability in long-term use.

[0047] By arranging the steel wire 16 inside the base 1 , the wear resistance and impact resistance of the rubber are greatly improved, and the service life of the gasket 100 is increased.

[0048] The reinforcing fiber cloth 17 is one of nylon cord cloth, polyester fiber, nylon 6, nylon 66, viscose fiber or Kevlar. In this embodiment, the reinforcing fiber cloth 17 is nylon cord cloth.

[0049] In this embodiment, the diameter of the nylon cord fabric is 0.5 mm, which is used to enhance the tensile strength and tear resistance of the base 1 and further prevent the gasket 100 from being torn or structurally damaged when subjected to long-term pressure or impact.

[0050] The gasket 100 in this embodiment was subjected to a 30-day simulated impact test. It was found that after the 30-day simulated impact test, the tensile strength of the gasket 100 in this embodiment was still maintained at about 19 MPa, which is much higher than the 0.4 MPa of the existing rubber gasket. The reinforced fiber cloth 17 and the steel wire 16 can absorb and dissipate the impact force, which is manifested as higher dynamic stiffness and slower stiffness decrease rate, and the fatigue resistance is significantly improved.

[0051] Example 2

[0052] See also Figure 5-Figure 8 The manhole cover protection device for noise control in this embodiment includes a gasket 100 arranged between the well body 300 and the manhole cover body 200.

[0053] Specifically, the gasket 100 includes a base 1 and an outer pad ear 2 integrally provided with the base 1 .

[0054] A reinforcing fiber cloth 17 and a steel wire 16 are sequentially arranged inside the base 1 from top to bottom.

[0055] The outer pad ear 2 is arranged at the outer edge of the top of the base 1. The outer pad ear 2 is clamped between the manhole cover body 200 and the well body 300, which can effectively prevent the manhole cover body 200 from directly hitting the well body 300 when being squeezed, thereby effectively reducing noise.

[0056] The manhole cover body 200 is installed on the top of the base 1, and the outer pad ear 2 is arranged to wrap the manhole cover body 200.

[0057] In this embodiment, the outer pad ear 2 wraps the edge of the manhole cover, which can prevent the manhole cover from directly hitting the well body 300, thereby effectively reducing noise.

[0058] See also Figure 8 The gap between the gasket 100 and the well body 300 is filled with a filling glue 4 to fill the gap between the gasket 100 and the well body 300, thereby avoiding rigid collision and further reducing noise.

[0059] In this embodiment, the outer pad ear 2 is also made of rubber.

[0060] Example 3

[0061] See also Figure 9 and Figure 10 The manhole cover protection device for noise control in this embodiment is based on the above-mentioned embodiment 2, and an inner pad ear 3 is vertically fixedly connected to the inner ring edge of the top end of the base 1.

[0062] See also Figure 10 The base 1 in this embodiment is adapted to a manhole cover body 200 with an annular groove at the bottom end. During installation, the staff directly places the manhole cover body 200 into the gasket 100 and makes the inner pad ear 3 fit into the annular groove at the bottom end of the manhole cover body 200.

[0063] From the above description, it can be seen that by snapping the inner pad ear 3 into the annular groove at the bottom end of the manhole cover body 200, the installation stability can be effectively improved, the gasket 100 can be prevented from falling into the well body 300, and the bonding force between the gasket 100 and the manhole cover body 200 can be improved.

[0064] In this embodiment, the inner pad ear 3 is also made of rubber.

[0065] Example 4

[0066] See also Figure 12-14 The manhole cover protection device for noise control in this embodiment is based on the above-mentioned embodiment 2. A mute mechanism 400 is installed at the bottom end of the manhole cover body 200. The mute mechanism 400 includes a plurality of sound-absorbing panels 13. In this embodiment, the sound-absorbing panels 13 are made of a polymer rubber material, which can effectively reduce the energy of sound waves.

[0067] A plurality of honeycomb holes 14 are provided on the sound-absorbing panel 13, and each honeycomb hole 14 is filled with sound-absorbing cotton 15. Through the arrangement of the honeycomb holes 14 on the sound-absorbing panel 13 and the sound-absorbing cotton 15 in the honeycomb holes 14, sound waves can be repeatedly reflected and refracted in the honeycomb holes 14, increasing the number of times the sound waves contact the hole walls and the sound-absorbing cotton 15, thereby dissipating the energy of the sound waves and effectively reducing noise.

[0068] See also Figure 13 The sound absorbing panels 13 are arranged in an array circumferentially around the center axis of the manhole cover 200 as the rotation axis, and the noise reduction capability is increased by the evenly arranged sound absorbing panels 13.

[0069] Specifically, the sound absorbing panel 13 is connected to the manhole cover 200 through a rotating mechanism.

[0070] Among them, the rotating mechanism includes a mounting tube 5 fixed at the bottom end of the manhole cover body 200, a rotating sleeve ring 9 rotatably sleeved outside the mounting tube 5, and a driving assembly for driving the rotating sleeve ring 9 to rotate. A plurality of U-shaped mounting frames 12 are fixed at evenly spaced intervals along the circumferential direction on the outside of the rotating sleeve ring 9, and each sound absorbing panel 13 is connected to each U-shaped mounting frame 12 one by one.

[0071] Specifically, the drive assembly includes a drive motor 11 and a gear assembly. The gear assembly includes a drive gear 6, an inner ring gear 8 and two driven gears 7. The drive gear 6 is arranged inside the mounting tube 5 and is transmission-connected to the drive motor 11, that is, the drive motor 11 can drive the drive gear 6 to rotate.

[0072] The two driven gears 7 are symmetrically meshed and arranged on both sides of the driving gear 6, and the driven gears 7 are movably arranged to penetrate the side wall of the mounting tube 5, and the driven gears 7 are rotatably connected to the mounting tube 5. The inner ring gear 8 is fixedly installed on the top of the rotating sleeve ring 9, and the inner ring gear 8 and the two driven gears 7 are meshed.

[0073] In this embodiment, the driving motor 11 is externally connected to a control host computer, and the control host computer sends a remote control signal to control the driving motor 11 to start.

[0074] Among them, the driving motor 11 is installed at the bottom end of the mounting tube 5, the driving end of the driving motor 11 is set upward and is transmission-connected to the driving shaft 10, the top end of the driving shaft 10 rotates through the mounting tube 5 and extends into the interior of the mounting tube 5, and the inner ring of the driving gear 6 is fixedly sleeved with the driving shaft 10.

[0075] As can be seen from the above description, when the drive motor 11 is started, it can drive the drive shaft 10 to rotate. The rotation of the drive shaft 10 can drive the drive gear 6 to rotate. The drive gear 6 can drive the two driven gears 7 to rotate. The meshing action of the driven gear 7 and the inner ring gear 8 can then drive the rotating sleeve ring 9 to rotate. The rotating sleeve ring 9 can drive each sound absorbing panel 13 to rotate around the mounting tube 5. The sound absorbing panel 13 is driven to rotate around the mounting tube 5 by the drive motor 11. When some impurities are absorbed on the surface of the honeycomb hole 14, the centrifugal force generated by the rotation of the sound absorbing panel 13 around the mounting tube 5 can be used to throw out the impurities on the surface of the honeycomb hole 14, thereby preventing impurities from clogging the honeycomb hole 14 for a long time and reducing the noise reduction effect. At the same time, the frequency of manual cleaning can also be reduced, alleviating the maintenance burden.

[0076] Example 5

[0077] The rest is the same as in Example 1, except that, please refer to Figure 15 Two steel wires 16 are perpendicular to each other to form a cross-shaped structure, and multiple cross-shaped structures are evenly arranged inside the base 1 along the circumferential direction.

[0078] Example 6

[0079] The rest is the same as in Example 1, except that, please refer to Figure 16 The two steel wires 16 are parallel to each other to form a parallel structural component, and multiple parallel structural components are evenly arranged inside the base 1 along the circumferential direction.

[0080] In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0081] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0082] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

Claims

1. A manhole cover protection device for noise control, comprising a gasket (100) arranged between a well body (300) and a manhole cover body (200), characterized in that: The gasket (100) includes a base (1), the cross section of the base (1) is a trapezoidal shape that is narrow at the top and wide at the bottom; a reinforcing fiber cloth (17) and a steel wire (16) are sequentially arranged inside the base (1) from top to bottom; the gasket (100) also includes an outer pad ear (2) integrally arranged with the base (1), the outer pad ear (2) being arranged at the outer edge of the top end of the base (1); the manhole cover body (200) is installed at the top end of the base (1), and the outer pad ear (2) is arranged to wrap the manhole cover body (200); A mute mechanism (400) is installed at the bottom end of the manhole cover body (200), and the mute mechanism (400) includes a plurality of sound-absorbing panels (13). The sound-absorbing panels (13) are provided with a plurality of honeycomb holes (14), and each of the honeycomb holes (14) is filled with sound-absorbing cotton (15); Each of the sound absorbing panels (13) is arranged in an array along a circumferential direction with the central axis of the manhole cover body (200) as a rotation axis; The sound absorbing panel (13) is connected to the manhole cover body (200) via a rotating mechanism, wherein the rotating mechanism comprises a mounting tube (5) fixed to the bottom end of the manhole cover body (200), a rotating sleeve ring (9) rotatably sleeved outside the mounting tube (5), and a driving assembly for driving the rotating sleeve ring (9) to rotate, and a plurality of U-shaped mounting frames (12) are fixed to the outer side of the rotating sleeve ring (9) at even intervals along the circumferential direction, and each of the sound absorbing panels (13) is connected to each of the U-shaped mounting frames (12) in a one-to-one correspondence.

2. A manhole cover protection device for noise control according to claim 1, characterized in that: An inner pad ear (3) is vertically fixedly connected to the inner edge of the top end of the base (1).

3. The manhole cover protection device for noise control according to claim 1, characterized in that: Two of the steel wires (16) cross each other to form an X-shaped structure, and a plurality of the X-shaped structures are evenly arranged inside the base (1) along the circumferential direction; or two of the steel wires (16) are perpendicular to each other to form a cross-shaped structure, and a plurality of the cross-shaped structures are evenly arranged inside the base (1) along the circumferential direction; or two of the steel wires (16) are parallel to each other to form a parallel structure assembly, and a plurality of the parallel structure assemblies are evenly arranged inside the base (1) along the circumferential direction; the cross section of the steel wire (16) is circular.

4. A manhole cover protection device for noise control according to any one of claims 1-2, characterized in that: The gap between the gasket (100) and the well body (300) is filled with filling glue (4).

5. The manhole cover protection device for noise control according to claim 1, characterized in that: The reinforcing fiber cloth (17) is one of nylon cord cloth, polyester fiber, nylon 6, nylon 66, viscose fiber or Kevlar.

6. The manhole cover protection device for noise control according to claim 1, characterized in that: The driving assembly includes a driving motor (11) and a gear assembly, and the gear assembly includes a driving gear (6), an inner gear ring (8) and two driven gears (7). The driving gear (6) is arranged inside the mounting tube (5) and is transmission-connected to the driving motor (11). The two driven gears (7) are symmetrically arranged on both sides of the driving gear (6), and the driven gears (7) are movable through the side wall of the mounting tube (5) and are rotationally connected to the mounting tube (5). The inner gear ring (8) is fixedly mounted on the top of the rotating sleeve ring (9), and the inner gear ring (8) and the two driven gears (7) are meshed.

7. The manhole cover protection device for noise control according to claim 6, characterized in that: The driving motor (11) is mounted at the bottom end of the mounting tube (5). The driving end of the driving motor (11) is arranged upward and is in transmission connection with the driving shaft (10). The top end of the driving shaft (10) rotates through the mounting tube (5) and then extends into the interior of the mounting tube (5). The inner ring of the driving gear (6) is fixedly sleeved with the driving shaft (10).

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