A noise-proof municipal road manhole cover

Abstract

The invention discloses a noise-proof municipal road manhole cover, which belongs to the technical field of manhole covers, and includes a base and a cover body. An adjustable noise-proof mechanism is arranged in the base, and the adjustable noise-proof mechanism includes an elastic adjustment ring, and a plurality of circumferentially distributed threaded adjustment rods are connected to the lower side of the elastic adjustment ring. The threaded adjustment rods pass through the base and are connected to a driving gear. The plurality of driving gears are meshed with a synchronous gear ring, and the synchronous gear ring is meshed with an adjustment gear on an adjustment driving motor. The synchronous gear ring is slidably arranged on a limit ring, and the limit ring is installed at the bottom of the base; a clamping mechanism and a fixed noise-proof mechanism are arranged inside the cover body. By arranging the adjustable noise-proof mechanism, the annular elastic gasket on the upper side of the elastic adjustment ring is at a suitable working pressure, which increases the service life, and facilitates the replacement of the annular elastic gasket. At the same time, a fixed noise-proof mechanism is arranged to further improve the noise-proof effect.

Description

Technical Field

[0001] The invention relates to the technical field of manhole covers, and in particular to a noise-proof municipal road manhole cover. Background Art

[0002] Municipal road manhole covers are an important part of urban infrastructure and are widely used in the inspection and maintenance of underground pipelines such as water supply, drainage, electricity, and communications. In the prior art, the impact of vehicles passing by causes the manhole cover to collide with the manhole seat, generating a large noise. The prior art reduces noise by setting elastic rubber rings or rubber pads. For example, the patent with publication number CN114016548A discloses a municipal noise-proof manhole cover assembly, which achieves the effect of reducing noise by squeezing elastic parts to avoid collision between the cover and the base. The technical solution is that the elastic part supports the technical effect brought by the manhole cover, but after the manhole cover is locked, the position of the elastic part is fixed, resulting in excessive or insufficient force on the elastic part. Excessive force causes the elastic part to fail easily, and excessive force causes large deformation when subjected to a large impact from vehicles passing by, causing the cover to collide with the base, which is insufficient to play an isolation role, and the replacement operation of the elastic part is complicated. Summary of the invention

[0003] The purpose of the present invention is to provide a noise-proof municipal road manhole cover to solve the above-mentioned technical problems.

[0004] To achieve the above-mentioned purpose, the present invention provides a noise-proof municipal road manhole cover, including a base and a cover body hinged to the base, an adjustable noise-proof mechanism is arranged in the base, the adjustable noise-proof mechanism includes an elastic adjustment ring arranged in a receiving groove of the base, a plurality of circumferentially distributed threaded adjustment rods are connected to the lower side of the elastic adjustment ring, the threaded adjustment rods pass through the base and are connected to a driving gear, the plurality of driving gears are meshed with a synchronous gear ring, the synchronous gear ring is meshed with an adjusting gear on an adjusting driving motor, the synchronous gear ring is slidably arranged on a limit ring, and the limit ring is installed at the bottom of the base; a clamping mechanism and a fixed noise-proof mechanism are arranged on the inner side of the cover body, and the clamping mechanism, the adjusting driving motor and the pressure detection member on the elastic adjustment ring are all electrically connected to a controller on the inner side of the cover body.

[0005] Preferably, an annular elastic gasket is provided on the upper side of the elastic adjustment ring, and at least one pressure detection component is provided on the annular elastic gasket. The pressure detection component is a pressure sensor, and the pressure sensor is electrically connected to the controller for detecting the force on the annular elastic gasket.

[0006] Preferably, the clamping mechanism includes a clamping drive motor, the gear on the output shaft of the clamping drive motor is meshed with the circumferentially distributed steering gear on the fixed ring, the fixed ring is connected to the body of the clamping drive motor, the steering gear is connected with a clamping arm, and the clamping arm is arranged relative to the limit ring.

[0007] Preferably, the adjustment drive motor is mounted on the inner wall of the base, an elastic clamping unit is provided at the outer end of the clamping arm, the elastic clamping unit includes a ball head positioning plunger symmetrically arranged on the mounting groove at the outer end of the clamping arm, and a positioning through hole is opened in the limiting ring.

[0008] Or the adjusting drive motor is installed on the clamping arm, the adjusting gear on the adjusting drive motor is arranged below the limiting ring, and the adjusting gear is provided with an anti-wear ball.

[0009] Preferably, the fixed noise-proofing mechanism comprises a noise-proofing ring, and the noise-proofing ring comprises a sealing rubber pad layer and a sound-absorbing layer which are arranged in sequence, and the sound-absorbing layer is a honeycomb plate or a perforated plate.

[0010] Preferably, an anti-sway component is also provided on the circumferential side of the cover body, which is circumferentially distributed inside the cover body and includes an anti-sway rod inserted in the guide channel of the cover body, one end of the anti-sway rod is conical, and an engaging thread groove is provided on the circumferential side of the anti-sway rod, a driving ring is slidably provided on the cover body, a driving thread is provided on the inner side of the driving ring, and the driving thread is provided in the engaging thread groove.

[0011] Preferably, the fixed noise-proof mechanism comprises an induction airbag, the induction airbag is connected with a first noise-proof airbag ring and a second noise-proof airbag ring which are arranged concentrically, and the first noise-proof airbag ring and the second noise-proof airbag ring are respectively located on the inner side and the outer side of the elastic adjustment ring; The cover body includes an upper cover plate and a lower cover plate connected by a buffer spring. The upper cover plate and the lower cover plate are arranged opposite to each other to form a buffer cavity. An induction airbag is arranged in the buffer cavity. A first noise-proof airbag ring and a second noise-proof airbag ring are arranged on the lower cover plate.

[0012] Preferably, a plurality of circumferentially distributed fixed airbag bodies are provided on the circumferential side of the upper cover plate, an arc-shaped protective plate is provided on the outer side of the fixed airbag body, an anti-slip protrusion is provided on the outer side of the arc-shaped protective plate, the inner side of the arc-shaped protective plate is installed on the inner side of the upper cover plate through a connecting spring, a limiting rod is connected to the inner side of the arc-shaped protective plate, the limiting rod is provided in the limiting through hole of the upper cover plate, and the fixed airbag body is connected to the sensing airbag.

[0013] Preferably, one end of the buffer spring is installed on the edge of the lower cover plate, and the other end of the buffer spring is installed on the inner side of the upper cover plate. A guide groove is opened on the circumferential side of the lower cover plate, and a guide block is arranged on the inner side of the edge of the upper cover plate, and the guide block is arranged in the guide groove.

[0014] Preferably, the base comprises an anchoring ring and a supporting ring, the anchoring ring is provided with an anchoring hole, the supporting ring is arranged on the anchoring ring and a plurality of reinforcing plates are arranged on the circumferential side.

[0015] Therefore, the present invention adopts the above-mentioned noise-proof municipal road manhole cover, which has the beneficial effects of: the adjustable noise-proof mechanism adjusts the height of the elastic adjustment ring according to the contact pressure after the cover body is locked, so that the annular elastic gasket on the upper side of the elastic adjustment ring is at a suitable working pressure, avoiding the annular elastic gasket from being under a large pressure for a long time, improving the service life, and facilitating the replacement of the annular elastic gasket. At the same time, a fixed noise-proof mechanism is provided to further improve the noise-proof effect.

[0016] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an exploded view of a noise-proof municipal road manhole cover of the present invention; Figure 2 It is a schematic diagram of the structure of the elastic clamping unit of the present invention; Figure 3 This is a schematic diagram of the structure of the anti-sway component of the present invention; Figure 4 This is a schematic diagram of the structure of the drive ring of the present invention; Figure 5 This is a schematic diagram of the structure of a fixed noise-proofing mechanism according to Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the installation structure of the drive motor according to Embodiment 2 of the present invention; Figure 7 This is a schematic diagram of the structure of the fixed noise prevention mechanism according to Example 3 of the present invention.

[0018] Reference numerals 1. Base; 11. Anchor ring; 111. Anchor hole; 12. Support ring; 13. Accommodating groove; 2. Cover; 21. Guide channel; 22. Buffer spring; 23. Upper cover; 24. Lower cover; 25. Limiting hole; 26. Guide groove; 27. Guide block; 3. Adjustable noise-proof mechanism; 31. Elastic adjustment ring; 311. Annular elastic gasket; 312. Pressure detection part; 32. Threaded adjustment rod; 33. Drive gear; 34. Synchronous gear ring; 35. Limiting ring; 351. Positioning hole; 36. Adjusting drive motor; 361. Adjusting gear; 362. Anti-wear ball; 4. Card Connecting mechanism; 41. Snap-fit ​​drive motor; 42. Fixed ring; 43. Steering gear; 44. Snap-fit ​​arm; 441. Mounting groove; 45. Ball head positioning plunger; 5. Fixed noise-proofing mechanism; 51. Noise-proofing ring; 511. Sealing rubber cushion layer; 512. Sound-absorbing layer; 52. Induction airbag; 53. First noise-proofing airbag ring; 54. Second noise-proofing airbag ring; 55. Fixed airbag body; 56. Arc-shaped protective plate; 561. Anti-slip protrusion; 562. Connecting spring; 563. Limit rod; 6. Anti-sway assembly; 61. Anti-sway rod; 611. Engaging thread groove; 62. Drive ring; 621. Drive thread. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use. 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, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "setting", "installation", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0021] Example 1 like Figure 1 As shown, a noise-proof municipal road manhole cover comprises a base 1 and a cover body 2 hinged to the base 1. The base 1 comprises an anchor ring 11 and a support ring 12. The anchor ring 11 is provided with an anchor hole 111. The support ring 12 is arranged on the anchor ring 11 and has a plurality of reinforcing plates arranged on the circumferential side. Figure 1 The reinforcing plate is not shown in the figure, and the setting of the reinforcing plate belongs to the prior art, and its specific size and arrangement are not limited thereto.

[0022] The upper end surface of the support ring 12 is provided with a receiving groove 13. An adjustable noise-proofing mechanism 3 is provided in the base 1, and the adjustable noise-proofing mechanism 3 includes an elastic adjustment ring 31 provided in the receiving groove 13 of the base 1, and a plurality of circumferentially distributed threaded adjustment rods 32 are connected to the lower side of the elastic adjustment ring 31, and the threaded adjustment rods 32 pass through the base 1 and are connected to a driving gear 33, and the plurality of driving gears 33 are meshed with a synchronous gear ring 34, and the synchronous gear ring 34 is meshed with an adjusting gear 361 on an adjusting driving motor 36, and the adjusting driving motor 36 is installed on the inner wall of the base 1, and the synchronous gear ring 34 is slidably provided on a limit ring 35, and the limit ring 35 is installed at the bottom of the base 1. An annular elastic gasket 311 is arranged on the upper side of the elastic adjustment ring 31. The annular elastic gasket 311 is made of rubber or silicone material. At least one pressure detection component 312 is arranged on the annular elastic gasket 311. The pressure detection component 312 is a pressure sensor. The pressure sensor is electrically connected to a controller (the installation position is selected according to actual conditions, so the controller is not shown in the figure) to detect the force on the annular elastic gasket 311.

[0023] The clamping mechanism 4 includes a clamping drive motor 41 installed on the inner side of the cover body 2. The gear on the output shaft of the clamping drive motor 41 meshes with the circumferentially distributed steering gears 43 on the fixing ring 42. The fixing ring 42 is connected to the body of the clamping drive motor 41. The fixing ring 42 does not rotate, and the steering gear 43 can rotate on the fixing ring 42. The steering gear 43 is connected to a clamping arm 44, and the clamping arm 44 is arranged opposite to the limit ring 35. The outer end of the clamping arm 44 is provided with an elastic clamping unit, such as Figure 2 As shown, the elastic clamping unit includes a ball head positioning plunger 45 symmetrically arranged on the mounting groove 441 at the outer end of the clamping arm 44, and the limiting ring 35 is provided with a positioning through hole 351.

[0024] In this embodiment, the fixed noise-proofing mechanism 5 disposed inside the cover body 2 includes a noise-proofing ring 51, such as Figure 5 As shown, the anti-noise ring 51 includes a sealing rubber cushion layer 511 and a sound-absorbing layer 512 arranged in sequence, and the sound-absorbing layer 512 is a honeycomb plate or a perforated plate. The circumferential side of the cover body 2 is also provided with an anti-sway component 6, such as Figure 3-Figure 4 As shown, the anti-sway assembly 6 is circumferentially distributed in the cover body 2 and includes an anti-sway rod 61 inserted into the guide channel 21 of the cover body 2. Figure 4 Only one anti-sway bar 61 is shown in the figure. In actual engineering, at least three anti-sway bars 61 are arranged in a circle. One end of the anti-sway bar 61 is conical. The circumferential side of the anti-sway bar 61 is provided with an engaging thread groove 611. A driving ring 62 is slidably provided on the cover 2. A driving thread 621 is provided inside the driving ring 62. The driving thread 621 is arranged in the engaging thread groove 611. After closing the cover 2, the driving ring 62 is rotated (manually or with the addition of a motor) so that the anti-sway bar 61 extends out of the cover 2 and contacts the surrounding foundation, thereby preventing the cover 2 from shaking and reducing the occurrence of noise.

[0025] After closing the cover 2, start the clamping mechanism 4, that is, start the clamping drive motor 41, so that the three steering gears 43 rotate synchronously, so that the clamping arm 44 is unfolded, and after being in place, the elastic clamping unit at the outer end of the clamping arm 44 clamps the limit ring 35 to realize the vertical positioning of the cover 2, and realizes the locking of the cover 2. The pressure value of the pressure sensor is used. If the pressure value is not within the set pressure range, start the adjustment drive motor 36, so that under the action of the adjustment gear 361, the synchronous gear ring 34 drives the multiple drive gears 33 to rotate, so that the threaded adjustment rod 32 rises or falls, and the elastic adjustment ring 31 rises and falls until the pressure value of the pressure sensor collected is within the set pressure range, and the adjustment drive motor 36 stops. The annular elastic gasket 311 on the elastic adjustment ring 31 is within the appropriate pressure range, which increases the service life, and when replacing the annular elastic gasket 311, the elastic adjustment ring 31 is driven by the adjustment drive motor 36 to be at a high position, which is convenient for replacing the annular elastic gasket 311.

[0026] It should be noted that the driving gear 33 has a certain thickness, and since the height adjustment range of the elastic adjustment ring 31 is relatively small, the driving gear 33 and the synchronous gear ring 34 will not be buckled.

[0027] Example 2 The difference between this embodiment and the first embodiment is that the adjustment drive motor 36 is installed on the clamping arm 44 and no elastic clamping unit is provided. Figure 6 As shown, the adjusting gear 361 on the adjusting driving motor 36 is arranged below the limiting ring 35, and the adjusting gear 361 is provided with an anti-wear ball 362, and the vertical direction is limited by the adjusting gear 361 and the limiting ring 35. The clamping and limiting functions are realized, and the wiring is convenient, but the height of the elastic adjusting ring 31 cannot be adjusted when the cover is opened.

[0028] Example 3 The difference between this embodiment and the embodiments 1 and 2 is that the fixed noise prevention mechanism 5 is different. Figure 7 As shown, the fixed noise-proof mechanism 5 includes an induction airbag 52, which is connected to a first noise-proof airbag ring 53 and a second noise-proof airbag ring 54 which are arranged concentrically, and the first noise-proof airbag ring 53 and the second noise-proof airbag ring 54 are respectively located on the inner side and the outer side of the elastic adjustment ring 31. The cover body 2 includes an upper cover plate 23 and a lower cover plate 24 which are connected by a buffer spring 22, and the upper cover plate 23 and the lower cover plate 24 are arranged opposite to each other to form a buffer cavity, in which the induction airbag 52 is arranged, and the first noise-proof airbag ring 53 and the second noise-proof airbag ring 54 are arranged on the lower cover plate 24. One end of the buffer spring 22 is mounted on the edge of the lower cover plate 24, and the other end of the buffer spring 22 is mounted on the inner side of the upper cover plate 23. A guide groove 26 is provided on the circumferential side of the lower cover plate 24, and a guide block 27 is provided on the inner side of the edge of the upper cover plate 23, and the guide block 27 is arranged in the guide groove 26.

[0029] Compared with the anti-sway component 6 in Example 1, this embodiment uses pneumatic means to implement anti-sway measures. A plurality of circumferentially distributed fixed airbags 55 are provided on the circumferential side of the upper cover plate 23. An arc-shaped protective plate 56 is provided on the outer side of the fixed airbag 55. An anti-slip protrusion 561 is provided on the outer side of the arc-shaped protective plate 56. The inner side of the arc-shaped protective plate 56 is installed on the inner side of the upper cover plate 23 through a connecting spring 562. A limiting rod 563 is connected to the inner side of the arc-shaped protective plate 56. The limiting rod 563 is provided in the limiting through hole 25 of the upper cover plate 23. The fixed airbag 55 is connected to the inductive airbag 52. After the inductive airbag 52 is squeezed, the fixed airbag 55 is inflated, and the arc-shaped protective plate 56 moves toward and fits the surrounding foundation, reducing the relative movement between the upper cover 2 and the surrounding foundation, and realizing the protection between the surrounding foundation and the upper cover 2.

[0030] The specific process is as follows: When the manhole cover receives pressure, the upper cover plate 23 moves downward along the guide groove 26 and squeezes the induction airbag 52. The gas of the induction airbag 52 enters the first noise-proof airbag ring 53, the second noise-proof airbag ring 54 and the fixed airbag body 55. The first noise-proof airbag ring 53 and the second noise-proof airbag ring 54 are inflated to protect the lower cover plate 24 and prevent the lower cover plate 24 from directly colliding with the base 1. The fixed airbag body 55 is inflated to protect the circumferential side of the upper cover plate 23 and prevent the upper cover plate 23 from directly colliding with the surrounding foundation, greatly reducing the occurrence of noise. When not under pressure, under the action of the buffer spring 22 and the guide block 27, the upper cover plate 23 and the lower cover plate 24 return to their initial relative positions.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A noise-proof municipal road manhole cover, comprising a base and a cover body hinged to the base, characterized in that: An adjustable noise-proofing mechanism is arranged in the base, and the adjustable noise-proofing mechanism includes an elastic adjustment ring arranged in the base accommodating groove, and a plurality of circumferentially distributed threaded adjustment rods are connected to the lower side of the elastic adjustment ring, and the threaded adjustment rods pass through the base and are connected to a driving gear, and the plurality of driving gears are meshed with a synchronous gear ring, and the synchronous gear ring is meshed with an adjusting gear on an adjusting driving motor, and the synchronous gear ring is slidably arranged on a limit ring, and the limit ring is installed on the bottom of the base; a clamping mechanism and a fixed noise-proofing mechanism are arranged on the inner side of the cover body, and the clamping mechanism, the adjusting driving motor and the pressure detection part on the elastic adjustment ring are all electrically connected to the controller on the inner side of the cover body.

2. The noise-proof municipal road manhole cover according to claim 1, characterized in that: An annular elastic gasket is arranged on the upper side of the elastic adjustment ring, and at least one pressure detection component is arranged on the annular elastic gasket. The pressure detection component is a pressure sensor, and the pressure sensor is electrically connected to the controller for detecting the force on the annular elastic gasket.

3. The noise-proof municipal road manhole cover according to claim 2, characterized in that: The clamping mechanism includes a clamping drive motor, a gear on the output shaft of the clamping drive motor meshes with a circumferentially distributed steering gear on a fixed ring, the fixed ring is connected to the body of the clamping drive motor, the steering gear is connected with a clamping arm, and the clamping arm is arranged opposite to the limit ring.

4. The noise-proof municipal road manhole cover according to claim 3, characterized in that: The adjustment drive motor is installed on the inner wall of the base, and an elastic clamping unit is arranged at the outer end of the clamping arm. The elastic clamping unit includes a ball head positioning plunger symmetrically arranged on the mounting groove at the outer end of the clamping arm, and a positioning through hole is opened in the limiting ring; Or the adjusting drive motor is installed on the clamping arm, the adjusting gear on the adjusting drive motor is arranged below the limiting ring, and the adjusting gear is provided with an anti-wear ball.

5. The noise-proof municipal road manhole cover according to claim 1, characterized in that: The fixed noise-proofing mechanism comprises a noise-proofing ring, which comprises a sealing rubber cushion layer and a sound-absorbing layer which are arranged in sequence, and the sound-absorbing layer is a honeycomb plate or a perforated plate.

6. The noise-proof municipal road manhole cover according to claim 5, characterized in that: An anti-sway component is also provided on the circumferential side of the cover body. The anti-sway component is distributed circumferentially inside the cover body and includes an anti-sway rod inserted in the guide channel of the cover body. One end of the anti-sway rod is conical, and an engaging thread groove is provided on the circumferential side of the anti-sway rod. A driving ring is slidably provided on the cover body, and a driving thread is provided on the inner side of the driving ring, and the driving thread is provided in the engaging thread groove.

7. The noise-proof municipal road manhole cover according to claim 1, characterized in that: The fixed noise-proof mechanism comprises an induction airbag, the induction airbag is connected with a first noise-proof airbag ring and a second noise-proof airbag ring which are arranged concentrically, and the first noise-proof airbag ring and the second noise-proof airbag ring are respectively located on the inner side and the outer side of the elastic adjustment ring; The cover body includes an upper cover plate and a lower cover plate connected by a buffer spring. The upper cover plate and the lower cover plate are arranged opposite to each other to form a buffer cavity. An induction airbag is arranged in the buffer cavity. A first noise-proof airbag ring and a second noise-proof airbag ring are arranged on the lower cover plate.

8. The noise-proof municipal road manhole cover according to claim 7, characterized in that: A number of circumferentially distributed fixed airbag bodies are arranged on the circumferential side of the upper cover plate, an arc-shaped protective plate is arranged on the outer side of the fixed airbag body, an anti-slip protrusion is arranged on the outer side of the arc-shaped protective plate, the inner side of the arc-shaped protective plate is installed on the inner side of the upper cover plate through a connecting spring, a limiting rod is connected to the inner side of the arc-shaped protective plate, the limiting rod is arranged in the limiting through hole of the upper cover plate, and the fixed airbag body is connected to the induction airbag.

9. The noise-proof municipal road manhole cover according to claim 8, characterized in that: One end of the buffer spring is installed on the edge of the lower cover plate, and the other end of the buffer spring is installed on the inner side of the upper cover plate. A guide groove is opened on the circumferential side of the lower cover plate, and a guide block is arranged on the inner side of the edge of the upper cover plate, and the guide block is arranged in the guide groove.

10. The noise-proof municipal road manhole cover according to claim 1, characterized in that: The base comprises an anchoring ring and a supporting ring. The anchoring ring is provided with an anchoring hole. The supporting ring is arranged on the anchoring ring and a plurality of reinforcing plates are arranged on the circumferential side.

Images