Vulcanized rubber sound insulation well lid

Abstract

The invention relates to the technical field of well lid structures, and provides a vulcanized rubber sound insulation well lid which comprises a well lid body, an elastic sound insulation ring and a well base. An embedded groove is formed in the inner side of the elastic sound insulation ring, the side edge of the well lid body is wrapped in the embedded groove through the elastic sound insulation ring, the upper surface, the lower surface and the side face of the side edge of the well lid body are all connected with the groove face of the embedded groove in a sealed mode, and the well lid body is detachably installed on the well base. The elastic sound insulation ring is in sealed contact with the well lid and the well base, the well lid body is spaced from the well base through the elastic sound insulation ring, and the vulcanized rubber sound insulation well lid can solve the problem that a well lid structure in the prior art is prone to generating collision noise.

Description

Technical Field

[0001] The present application relates to the technical field of manhole cover structures, and more specifically, to a vulcanized rubber soundproof manhole cover. Background Art

[0002] A manhole cover is a cover used to cover underground facilities such as manholes, water wells, and drainage wells. Its main function is to protect and maintain the safety and normal operation of underground facilities. It can be used in urban roads, sidewalks, parks and other places. The manhole cover can protect underground facilities from damage by external forces, and can also withstand the heavy pressure of vehicles and pedestrians, so that underground facilities will not be damaged by external forces. For example, the manhole cover can withstand the rolling of car tires, so that underground water supply pipes, cables and other facilities are not affected by pressure. In addition, the manhole cover can also prevent rainwater, garbage and other external substances from entering the underground facilities, ensuring the normal operation and service life of the facilities.

[0003] In the design of the manhole cover structure in the prior art, a rubber-plastic sound insulation strip is usually embedded on the upper surface of the manhole seat, and the manhole cover body is pressed on the strip to buffer and prevent noise. The main defects of the manhole cover structure in the prior art are that the strip on the manhole seat only has the upper surface, and when the manhole cover body shakes, it will produce metal collision noise with the inner side of the manhole seat, and the embedded sound insulation strip is easy to fall off and fall into the well when the manhole cover is opened. Summary of the invention

[0004] In view of this, the present application provides a vulcanized rubber soundproof manhole cover to solve the technical problem that the manhole cover structure in the prior art is prone to generate collision noise.

[0005] The present application provides a vulcanized rubber soundproof manhole cover, wherein the vulcanized rubber soundproof manhole cover comprises a manhole cover body, an elastic soundproof ring and a manhole seat; An embedding groove is provided on the inner side of the elastic sound insulation ring, and the elastic sound insulation ring covers the side edge of the manhole cover body in the embedding groove. The upper surface, lower surface and side surface of the side edge of the manhole cover body are sealed with the groove surface of the embedding groove. The manhole cover body can be detachably installed on the manhole seat. The elastic sound insulation ring is in sealing contact with the manhole cover and the manhole seat, and the manhole cover body is separated from the manhole seat by the elastic sound insulation ring.

[0006] Furthermore, a mounting portion is connected to the inner side of the manhole seat, a first mounting through hole is provided on the manhole cover body, a second mounting through hole is provided on the mounting portion, the manhole cover body is detachably connected by threaded fasteners that pass through the first mounting through hole and the second mounting through hole in sequence, a concealed recessed groove is formed on the manhole cover body above the first mounting through hole, and a cap is formed on the elastic sound insulation ring for being inserted into the concealed recessed groove to seal the concealed recessed groove.

[0007] Furthermore, the mounting portion is an annular ear plate, which can be rotatably mounted on the inner side of the well seat around the vertical center axis of the well seat, and the vulcanized rubber soundproof manhole cover also includes an alignment drive mechanism that is movably mounted on the well cover body and exposed to the upper surface of the well cover body, and the alignment drive mechanism can drive the annular ear plate to rotate around the vertical center axis of the well seat to an alignment position when subjected to external force, in which the first mounting through hole and the second mounting through hole are aligned in a direction parallel to the vertical center axis of the well seat.

[0008] Furthermore, a first limiting boss is arranged on the manhole cover body, the first limiting boss extends from the manhole cover body toward the annular ear plate, a second limiting boss is arranged on the annular ear plate, the second limiting boss extends from the annular ear plate toward the manhole cover body, the first limiting boss is connected to a first rubber block, a clamping hole is formed on the first rubber block, the second limiting boss is connected to a second rubber block, a clamping head is formed on the second rubber block, and in the aligned position, the first rubber block and the second rubber block contact each other to stop so that the first limiting boss and the second limiting boss stop and limit each other, and the clamping head is clamped into the clamping hole.

[0009] Furthermore, the alignment driving mechanism includes a pressure block, an elastic return mechanism and a swing rod, the manhole cover body is provided with a movable accommodating cavity for accommodating the pressure block, two ends of the elastic return mechanism are respectively connected to the pressure block and the manhole cover body, the upper end of the pressure block protrudes from the upper surface of the manhole cover body, the pressure block and the elastic return mechanism are arranged up and down along the vertical center axis of the well seat, the swing rod is hinged to the manhole cover body through a torsion spring, the first end of the swing rod extends into the movable accommodating cavity, the second end of the swing rod extends into the inside of the well seat and is adjacent to the annular ear plate, the swing rod is hinged to the manhole cover body and has an angle with a plane perpendicular to the vertical center axis of the well seat and an angle with any vertical plane passing through the vertical center axis of the well seat, and when the pressure block moves downward, it can drive the first end of the swing rod to rotate obliquely downward, so that the second end of the swing rod moves obliquely upward and drives the annular ear plate to rotate.

[0010] Furthermore, a pressing convex portion is formed on the side wall of the pressing block, the first end of the swing arm is located below the pressing convex portion, and the first end of the swing arm is sleeved with a first rubber sleeve, and the second end of the swing arm is sleeved with a second rubber sleeve, the annular ear plate includes an annular mounting cavity, the inner side of the annular ear plate is provided with a circular hole spaced sequentially along the circumferential direction of the annular ear plate, an annular rubber body is installed in the annular mounting cavity, and the inner side of the annular rubber body is integrally formed with a semicircular head spaced sequentially along the circumferential direction of the annular rubber body, the number of the semicircular heads is consistent with the number of the circular holes and extends from each circular hole to the inner side of the annular ear plate in a one-to-one correspondence, when the pressing block moves downward, the pressing convex portion can press the first rubber sleeve downward, so that the second rubber sleeve moves obliquely upward to rub the semicircular head to rotate along the circumferential direction of the annular ear plate.

[0011] Furthermore, the pressure block includes a pressure block body and a pressure block head detachably connected to the upper surface of the pressure block body, the pressure block body is connected to the elastic return mechanism, the upper surface of the pressure block body is lower than the upper surface of the manhole cover body, the movable accommodating cavity is provided with a circular groove adjacent to the upper surface, the vulcanized rubber soundproof manhole cover is equipped with a sealing cover, when the pressure block head is not installed on the pressure block body, the sealing cover can be installed on the circular groove to seal the movable accommodating cavity and be spaced from the upper surface of the pressure block body.

[0012] Furthermore, the vulcanized rubber soundproof manhole cover also includes a buoyancy mechanism, which includes a buoyancy rocker, a buoyancy ball and a first plug-in structure. A second plug-in structure is provided at a portion of the manhole cover body located within the manhole seat. A buoyancy mechanism mounting frame is connected to an inner wall of the manhole seat. The buoyancy rocker is hinged to the buoyancy mechanism mounting frame. When the manhole cover body is connected in place relative to the manhole seat, the first plug-in structure and the second plug-in structure are plugged and fixed to each other, the buoyancy ball is connected to one end of the buoyancy rocker, and the plug-in structure is connected to the other end of the buoyancy rocker.

[0013] Furthermore, the vulcanized rubber soundproof manhole cover also includes a support ring, the buoyancy mechanism mounting frame is connected to the support ring, the support ring can be rotatably installed on the inner side of the manhole seat around the vertical center axis of the manhole seat, the support ring and the annular ear plate are connected by a synchronization rod, and when the annular ear plate is rotated to the alignment position, the support ring is rotated to a position where the first plug-in structure and the second plug-in structure are plugged and fixed to each other.

[0014] Furthermore, the elastic sound insulation ring is a vulcanized rubber that is fused through a vulcanization process and coated on the side edge of the manhole cover body.

[0015] Compared with the prior art, in the vulcanized rubber soundproof manhole cover provided in the present application, since the upper surface, lower surface and side surface of the side edge of the manhole cover body are sealed and connected to the groove surface of the embedding groove, the side edge of the manhole cover body is surrounded and wrapped on three sides by an elastic sound insulation ring, and the elastic sound insulation ring is difficult to fall off. Moreover, the manhole cover body is completely separated from the manhole seat by the elastic sound insulation ring and has no contact with it, thus avoiding the phenomenon of metal collision noise between the manhole cover body and the inner side of the manhole seat when the manhole cover body shakes in the prior art, thereby greatly improving the soundproofing effect of the vulcanized rubber soundproof manhole cover.

[0016] In a further solution, the mounting portion is an annular ear plate that can be rotatably mounted on the inner side of the well seat around the vertical central axis of the well seat, and is equipped with an alignment drive mechanism, which can improve the convenience of aligning (centering) the first mounting through hole and the second mounting through hole. There is no need to repeatedly lift the well cover body and move the position of the well cover body to align the first mounting through hole and the second mounting through hole. The alignment (centering) of the first mounting through hole and the second mounting through hole can be achieved quickly and accurately, which facilitates the rapid assembly of the concealed locking bolts in the first mounting through hole and the second mounting through hole.

[0017] In a further solution, the vulcanized rubber soundproof manhole cover also includes a buoyancy mechanism, which includes a buoyancy rocker arm, a buoyancy ball and a first plug-in structure. When the water level in the well corresponding to the vulcanized rubber soundproof manhole cover continues to rise until it reaches the buoyancy ball, the buoyancy ball generates an upward buoyancy force, and then the other end of the buoyancy rocker arm can generate a downward force to press the well seat on the manhole cover body, which can avoid the phenomenon of the manhole cover body detaching due to the failure of the concealed locking bolts as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic cross-sectional view of a vulcanized rubber soundproof manhole cover according to an embodiment of the present application; Figure 2 for Figure 1 The enlarged view of point A in the middle; Figure 3 For the corresponding Figure 2 The view after the concealed lock bolt is omitted; Figure 4 A three-dimensional assembly diagram of a vulcanized rubber soundproof manhole cover according to an embodiment of the present application; Figure 5 A three-dimensional schematic diagram of a well seat in a vulcanized rubber soundproof well cover according to an embodiment of the present application; Figure 6 A three-dimensional schematic diagram of an elastic sound insulation ring in a vulcanized rubber sound insulation manhole cover according to an embodiment of the present application; Figure 7 A schematic cross-sectional view of a vulcanized rubber soundproof manhole cover according to another embodiment of the present application; Figure 8 For the corresponding Figure 7 A partial enlarged view of Fig. 9 for Figure 8 The enlarged view of point A in the middle; Fig.10 for Figure 8 The enlarged view of point B in the middle; Fig.11 A schematic partial cross-sectional view of a vulcanized rubber soundproof manhole cover in another state according to another embodiment of the present application; Fig.12 This is a three-dimensional schematic diagram of a manhole cover body in a vulcanized rubber soundproof manhole cover according to another embodiment of the present application; Fig.13 A three-dimensional schematic diagram of an annular ear plate in a vulcanized rubber soundproof manhole cover according to another embodiment of the present application; Fig.14 for Fig.13 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. One or more embodiments of the present application are exemplarily given in the drawings to make the understanding of the technical solution disclosed in the present application more accurate and thorough. However, it should be understood that the present application can be implemented in a variety of different forms and is not limited to the embodiments described below.

[0021] The same or similar numbers in the drawings of the present application correspond to the same or similar parts; in the description of the present application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, and does 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, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B.

[0023] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0024] See also Figures 1 to 6 The present invention provides a vulcanized rubber soundproof manhole cover, wherein the vulcanized rubber soundproof manhole cover comprises a manhole cover body 100, an elastic soundproof ring 200 and a manhole seat 300; An embedding groove 201 is provided on the inner side of the elastic sound insulation ring 200, and the elastic sound insulation ring 200 covers the side edge of the manhole cover body 100 in the embedding groove 201. The upper surface, lower surface and side surface of the side edge of the manhole cover body 100 are sealed and connected to the groove surface of the embedding groove 201. The manhole cover body 100 is detachably installed on the manhole seat 300, and the elastic sound insulation ring 200 is in sealing contact with the manhole cover and the manhole seat 300. The manhole cover body 100 is separated from the manhole seat 300 by the elastic sound insulation ring 200. It can be understood that the elastic sound insulation ring 200 is directly supported on the manhole seat 300, so that the manhole cover body 100 is supported on the manhole seat 300 through the elastic sound insulation ring 200. An anti-fall net 11 can also be connected to the manhole seat 300, and the anti-fall net 11 is located below the manhole cover body 100.

[0025] In the vulcanized rubber soundproof manhole cover provided by the present application, since the upper surface, lower surface and side surface of the side edge of the manhole cover body 100 are sealed and connected to the groove surface of the embedding groove 201, the side edge of the manhole cover body 100 is surrounded and wrapped on three sides by the elastic soundproof ring 200, and the elastic soundproof ring 200 is difficult to fall off. In addition, the manhole cover body 100 and the manhole seat 300 are completely separated and non-contacted by the elastic soundproof ring 200, thereby avoiding the phenomenon in the prior art that the manhole cover body 100 will produce metal collision noise with the inner side of the manhole seat 300 when shaking, thereby greatly improving the soundproofing effect of the vulcanized rubber soundproof manhole cover.

[0026] According to a preferred embodiment of the present application, the elastic sound insulation ring 200 is a vulcanized rubber that is fused and coated on the side edge of the manhole cover body 100 through a vulcanization process. Specifically, a special vulcanization mold can be provided, and the manhole cover body 100 is placed in the mold. The manhole cover body 100 is filled with waterproof and noise-proof rubber. The waterproof and noise-proof rubber ring adopts a mixed adjustable chloroprene rubber, and is fused with the cover surface of the manhole cover body 100 through a compaction heating vulcanization process, so that the two cannot be separated from each other.

[0027] According to one embodiment of the present application, a mounting portion is connected to the inner side of the manhole seat 300, a first mounting through hole 101 is provided on the manhole cover body 100, and a second mounting through hole 2 is provided on the mounting portion. The manhole cover body 100 is detachably connected by threaded fasteners (such as concealed locking bolts 1) that pass through the first mounting through hole 101 and the second mounting through hole 2 in sequence to prevent the manhole cover body 100 from jumping, displacing, or accidentally opening. The concealed locking bolts 1 can specifically be made of stainless steel or high-strength bolts. The manhole cover body 100 forms a concealed recessed groove 102 above the first mounting through hole 101, and a cap 202 for being inserted into the concealed recessed groove 102 to seal the concealed recessed groove 102 is formed on the elastic sound insulation ring 200.

[0028] According to an embodiment of the present application, the mounting portion includes a plurality of mounting ear plates 3, each of which is provided with a second mounting through hole 2, and the plurality of mounting ear plates 3 are spaced and distributed around the vertical center axis of the well seat 300. According to a specific embodiment of the present application, there are three mounting ear plates 3, which are distributed at 120° around the vertical center axis of the well seat 300, and the elastic sound insulation ring 200 is correspondingly integrally formed with three caps 202 with dustproof and anti-falling functions, and the caps 202 have a certain toughness and can be opened to tighten and loosen the bolts. When the concealed locking bolt 1 is unscrewed, the toughness of the cap 202 will keep the bolt in the hole at all times and will not fall out easily.

[0029] See also Figures 6 to 14According to another embodiment of the present application, the mounting portion is an annular ear plate 400. Similarly, three second mounting through holes 2 can also be arranged on the annular ear plate 400 at an angle of 120°. The annular ear plate 400 can be rotatably mounted on the inner side of the well seat 300 around the vertical center axis of the well seat 300. The vulcanized rubber soundproof manhole cover also includes an alignment driving mechanism 500 that is movably mounted on the manhole cover body 100 and exposed to the upper surface of the manhole cover body 100. When the alignment driving mechanism 500 is subjected to an external force, it can drive the annular ear plate 400 to rotate around the vertical center axis of the well seat 300 to an alignment position. In the alignment position, the first mounting through hole 101 and the second mounting through hole 2 are aligned in a direction parallel to the vertical central axis of the well seat 300, which greatly improves the convenience of aligning (centering) the first mounting through hole 101 and the second mounting through hole 2. There is no need to repeatedly lift the manhole cover body 100 and move the position of the manhole cover body 100 to align the first mounting through hole 101 and the second mounting through hole 2. The alignment (centering) of the first mounting through hole 101 and the second mounting through hole 2 can be achieved quickly and accurately, which facilitates the quick assembly of the concealed locking bolt 1 in the first mounting through hole 101 and the second mounting through hole 2.

[0030] See also Fig. 9 According to a specific embodiment of the present application, a first annular groove 301 is formed on the inner side of the well seat 300, and a first sliding head 401 is formed on the outer side of the annular ear plate 400. The first sliding head 401 can be rotatably limited in the first annular groove 301. Bearings or balls and other components can also be arranged between the first sliding head 401 and the first annular groove 301 to facilitate the rotation of the first sliding head 401 in the first annular groove 301.

[0031] See also Figure 12 to Figure 14According to one embodiment of the present application, a first limiting boss 103 is provided on the manhole cover body 100, and the first limiting boss 103 extends from the manhole cover body 100 toward the annular ear plate 400, and a second limiting boss 402 is provided on the annular ear plate 400, and the second limiting boss 402 extends from the annular ear plate 400 toward the manhole cover body 100, and the first limiting boss 103 is connected to the first rubber block 4, and the first rubber block 4 is formed with a clamping hole 41, and the second limiting boss 402 is connected to the second rubber block 402. The second rubber block 5 is formed with a clamping head 51 (a part of the second rubber block 5, which is obviously also made of rubber). In the alignment position, the first rubber block 4 and the second rubber block 5 contact each other to stop the first limiting boss 103 and the second limiting boss 402 to stop each other, and the clamping head 51 is clamped into the clamping hole 41, so that when the annular ear plate 400 is rotated to the alignment position (when the first mounting through hole 101 is aligned with the second mounting through hole 2), the manhole cover body 100 and the annular ear plate 400 are limited and fixed to each other and no longer move relative to each other, preventing the annular ear plate 400 from rotating in the opposite direction (for example, caused by the collision between the first limiting boss 103 and the second limiting boss 402). Specifically, the two sides of the clamping head 51 can gradually expand in the direction away from the second rubber block 5, and the two side walls in the clamping hole 41 correspond to the gradually expanding structure of the two sides of the clamping head 51, forming a gradually narrowing structure toward the outside of the clamping hole 41, thereby playing a role in preventing the clamping head 51 from slipping out when it is clamped into the clamping hole 41, and can further prevent the clamping head 51 from slipping out of the clamping hole 41 by reverse movement. In order to avoid unnecessary interference between the second limiting boss 402 and the manhole cover body 100, a second limiting boss 402 should be set at a corresponding size position near each second mounting through hole 2, so as to ensure that the second limiting boss 402 can rotate between two adjacent first mounting through holes 101, so that the annular ear plate 400 can be rotated to the alignment position. Of course, each second limiting boss 402 is equipped with a corresponding second rubber block 5 and clamping head 51.

[0032] As another embodiment, magnets that can attract each other can be provided on the first limiting boss 103 and the second limiting boss 402 to prevent the annular ear plate 400 from rotating in the reverse direction when the annular ear plate 400 rotates to the alignment position.

[0033] See also Figure 7 and Figure 8According to a specific embodiment of the present application, the alignment driving mechanism 500 includes a pressing block 501, an elastic return mechanism 502 and a swing rod 503. The manhole cover body 100 is provided with an active accommodating chamber 104 for accommodating the pressing block 501. The manhole cover body 100 is provided with a drainage hole 107 at the bottom of the corresponding active accommodating chamber 104. The two ends of the elastic return mechanism 502 are respectively connected to the pressing block 501 and the manhole cover body 100. The upper end of the pressing block 501 protrudes from the upper surface of the manhole cover body 100. The pressing block 501 and the elastic return mechanism 502 (such as a spring) are arranged up and down along the vertical center axis of the well seat 300. The swing rod 503 is hinged to the manhole cover body 100 through a torsion spring. The first end of the swing rod 503 extends into the active accommodating chamber 104. The swing rod The second end of 503 extends into the interior of the well seat 300 and is adjacent to the annular ear plate 400. The swing rod 503 can also swing through the swing cavity 108 on the well cover body 100. The hinge axis of the swing rod 503 hinged to the well cover body 100 has an angle with the plane perpendicular to the vertical center axis of the well seat 300 and has an angle with any vertical plane passing through the vertical center axis of the well seat 300, so the swing rod 503 tilts and swings relative to the vertical center axis of the well seat 300. The swing rod 503 can be specifically hinged to the well cover body 100 through the inclined axis 504. When the pressure block 501 moves downward, it can drive the first end of the swing rod 503 to rotate obliquely downward, so that the second end of the swing rod 503 moves obliquely upward and drives the annular ear plate 400 to rotate.

[0034] See also Figures 7 to 14 More specifically, a pressing protrusion 505 is formed on the side wall of the pressing block 501, a first end of the swing rod 503 is located below the pressing protrusion 505, and a first rubber sleeve 506 is sleeved on the first end of the swing rod 503, and a second rubber sleeve 507 is sleeved on the second end of the swing rod 503. The annular ear plate 400 includes an annular mounting cavity 403, and circular holes 404 spaced in sequence along the circumferential direction of the annular ear plate 400 are arranged on the inner side of the annular ear plate 400. An annular rubber body 6 is installed in the annular mounting cavity 403, and semicircular heads 61 spaced in sequence along the circumferential direction of the annular rubber body 6 are integrally formed on the inner side of the annular rubber body 6. The number of the semicircular heads 61 is consistent with the number of the circular holes 404. And they extend one by one from each circular hole 404 to the inner side of the annular ear plate 400. When the pressing block 501 moves downward, the pressing protrusion 505 can press the first rubber sleeve 506 downward, so that the second rubber sleeve 507 moves obliquely upward to rub the semicircular head 61 to rotate along the circumferential direction of the annular ear plate 400. The operator installing the manhole cover can repeatedly step on the pressing block 501, and then through the return action of the elastic return mechanism 502, the first end of the swing rod 503 moves back and forth (repeatedly rotates obliquely downward and moves obliquely upward), so that the second rubber sleeve 507 continuously rubs the semicircular head 61 obliquely upward to rotate along the circumferential direction of the annular ear plate 400 until the annular ear plate 400 rotates to the alignment position.

[0035] See also Figures 7 to 11 According to one embodiment of the present application, the pressing block 501 includes a pressing block body 508 and a pressing block head 509 detachably connected to the upper surface of the pressing block body 508. The pressing block head 509 can be connected to the pressing block body 508 by means of threaded fasteners or clamping. The pressing block body 508 is connected to the elastic return mechanism 502. The upper surface of the pressing block body 508 is lower than the upper surface of the manhole cover body 100. The movable accommodating cavity 104 is provided with a circular sink groove 105 at a position adjacent to the upper surface. The vulcanized rubber The rubber soundproof manhole cover is equipped with a sealing cover 7. When the pressing block head 509 is not installed on the pressing block body 508, the sealing cover 7 can be installed on the annular groove 105 to seal the movable accommodating cavity 104 and be spaced from the upper surface of the pressing block body 508. This design is to remove the pressing block head 509 after the manhole cover body 100 and the manhole seat 300 are installed (connected) in place, and then install the sealing cover 7 to seal the movable accommodating cavity 104, so that the pressing block body 508 is no longer pressed and the swing rod 503 is no longer driven to move.

[0036] See also Figures 7 to 11 According to one embodiment of the present application, the vulcanized rubber soundproof manhole cover further includes a buoyancy mechanism 600, which includes a buoyancy swing rod 601, a buoyancy ball 602 and a first plug-in structure. A second plug-in structure is provided on a portion of the manhole cover body 100 located inside the manhole seat 300. The inner wall of the manhole seat 300 is connected to a buoyancy mechanism mounting frame 8. The buoyancy swing rod 601 is hinged to the buoyancy mechanism mounting frame 8. When the manhole cover body 100 is connected in place relative to the manhole seat 300, the first plug-in structure and the second plug-in structure are plugged and fixed to each other. The first plug-in structure can be a latch 603, and the second plug-in structure can be a limit ring 106 connected to the lower end of the manhole cover body 100. The buoyancy ball 602 is connected to one end of the buoyancy swing rod 601, and the first plug-in structure is connected to the other end of the buoyancy swing rod 601. When the water level in the well corresponding to the vulcanized rubber soundproof manhole cover continues to rise until it reaches the buoyancy ball 602, an upward buoyancy is generated on the buoyancy ball 602. Then, the first plug-in structure at the other end of the buoyancy swing rod 601 is plugged and fixed with the second plug-in structure (the pin 603 is inserted into the limit ring 106), which can generate a downward force to press the well seat 300 on the manhole cover body 100, thereby avoiding the failure of the concealed locking bolt 1 and causing the manhole cover body 100 to detach, which is very beneficial in extreme natural disasters such as floods and heavy rains.

[0037] According to a preferred embodiment of the present application, the vulcanized rubber soundproof manhole cover also includes a support ring 9, and a buoyancy mechanism mounting frame 8 is connected to the support ring 9. The support ring 9 can be rotatably installed on the inner side of the manhole seat 300 around the vertical center axis of the manhole seat 300. A second annular groove 302 is formed on the inner side of the manhole seat 300, and a second sliding head 91 is formed on the outer side of the support ring 9. The second sliding head 91 can be rotatably limited in the second annular groove 302. Bearings or balls and other components can also be arranged between the second sliding head 91 and the first annular groove 301 to facilitate the rotation of the second sliding head 91 in the second annular groove 302, so the buoyancy mechanism mounting frame 8 can rotate with the support ring 9. The support ring 9 is connected to the annular ear plate 400 by a synchronization rod 10. When the annular ear plate 400 rotates to the alignment position, the support ring 9 rotates to make the first plug-in structure and the second plug-in structure plugged and fixed to each other. By reasonably arranging the relative positions of the first plug-in structure and the second limiting boss 402, and reasonably arranging the relative positions of the second plug-in structure and the first limiting boss 103, it can be ensured that when the annular ear plate 400 is rotated to the alignment position, the support ring 9 is rotated to the position where the first plug-in structure and the second plug-in structure are plugged and fixed to each other. Specifically, when the angle between the first plug-in structure and the second limiting boss 402 with respect to the vertical center axis of the well seat 300 is the first angle, the angle between the second plug-in structure and the first limiting boss 103 with respect to the vertical center axis of the well seat 300 is also the first angle. At this time, the second limiting boss 402 stops and limits each other with the first limiting boss 103 after rotating the corresponding predetermined angle at any initial position, and the first plug-in structure is also rotated by the same corresponding predetermined angle to be plugged and fixed to the second plug-in structure.

[0038] It should be noted that the above embodiments only express the preferred implementation of the present application, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the present application. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, such as combining different features in various embodiments, etc., which should all fall within the scope of protection of the present application.

Claims

1. A vulcanized rubber soundproof manhole cover, characterized in that: The vulcanized rubber soundproof manhole cover comprises a manhole cover body, an elastic soundproof ring and a manhole seat; An embedding groove is provided on the inner side of the elastic sound insulation ring, and the elastic sound insulation ring covers the side edge of the manhole cover body in the embedding groove. The upper surface, lower surface and side surface of the side edge of the manhole cover body are all sealed and connected with the groove surface of the embedding groove. The manhole cover body can be detachably installed on the manhole seat. The elastic sound insulation ring is in sealing contact with the manhole cover and the manhole seat, and the manhole cover body is separated from the manhole seat by the elastic sound insulation ring. The inner side of the well seat is connected with a mounting portion, the well cover body is provided with a first mounting through hole, the mounting portion is provided with a second mounting through hole, the well cover body is detachably connected by threaded fasteners that pass through the first mounting through hole and the second mounting through hole in sequence, the well cover body is formed with a concealed recessed groove above the first mounting through hole, and the elastic sound insulation ring is formed with a cap for being inserted into the concealed recessed groove to block the concealed recessed groove; The mounting portion is an annular ear plate, which can be rotatably mounted on the inner side of the well seat around the vertical center axis of the well seat. The vulcanized rubber soundproof manhole cover also includes an alignment drive mechanism that is movably mounted on the well cover body and exposed to the upper surface of the well cover body. When the alignment drive mechanism is subjected to external force, it can drive the annular ear plate to rotate around the vertical center axis of the well seat to an alignment position. In the alignment position, the first mounting through hole and the second mounting through hole are aligned in a direction parallel to the vertical center axis of the well seat.

2. The vulcanized rubber soundproof manhole cover according to claim 1, characterized in that: A first limiting boss is arranged on the manhole cover body, the first limiting boss extends from the manhole cover body toward the annular ear plate, a second limiting boss is arranged on the annular ear plate, the second limiting boss extends from the annular ear plate toward the manhole cover body, the first limiting boss is connected to a first rubber block, a clamping hole is formed on the first rubber block, the second limiting boss is connected to a second rubber block, a clamping head is formed on the second rubber block, and in the aligned position, the first rubber block and the second rubber block contact each other to stop so that the first limiting boss and the second limiting boss stop and limit each other, and the clamping head is clamped into the clamping hole.

3. The vulcanized rubber soundproof manhole cover according to claim 1, characterized in that: The alignment driving mechanism includes a pressure block, an elastic return mechanism and a swing rod, the manhole cover body is provided with a movable accommodating cavity for accommodating the pressure block, two ends of the elastic return mechanism are respectively connected to the pressure block and the manhole cover body, the upper end of the pressure block protrudes from the upper surface of the manhole cover body, the pressure block and the elastic return mechanism are arranged up and down along the vertical center axis of the manhole seat, the swing rod is hinged to the manhole cover body by a torsion spring, the first end of the swing rod extends into the movable accommodating cavity, the second end of the swing rod extends into the inside of the manhole seat and is adjacent to the annular ear plate, the swing rod is hinged to the manhole cover body and has an angle with a plane perpendicular to the vertical center axis of the manhole seat and an angle with any vertical plane passing through the vertical center axis of the manhole seat, and the pressure block can drive the first end of the swing rod to rotate obliquely downward when it moves downward, so that the second end of the swing rod moves obliquely upward and drives the annular ear plate to rotate.

4. The vulcanized rubber soundproof manhole cover according to claim 3, characterized in that: The side wall of the pressure block is formed with a pressing convex portion, the first end of the swing arm is located below the pressing convex portion, and the first end of the swing arm is sleeved with a first rubber sleeve, and the second end of the swing arm is sleeved with a second rubber sleeve, the annular ear plate includes an annular mounting cavity, the inner side of the annular ear plate is provided with a circular hole spaced sequentially along the circumferential direction of the annular ear plate, an annular rubber body is installed in the annular mounting cavity, and the inner side of the annular rubber body is integrally formed with a semicircular head spaced sequentially along the circumferential direction of the annular rubber body, the number of the semicircular heads is consistent with the number of the circular holes and extends from each circular hole to the inner side of the annular ear plate in a one-to-one correspondence, when the pressure block moves downward, the pressing convex portion can press the first rubber sleeve downward, so that the second rubber sleeve moves obliquely upward to rub the semicircular head to rotate along the circumferential direction of the annular ear plate.

5. The vulcanized rubber soundproof manhole cover according to claim 3, characterized in that: The pressure block includes a pressure block body and a pressure block head detachably connected to the upper surface of the pressure block body, the pressure block body is connected to the elastic return mechanism, the upper surface of the pressure block body is lower than the upper surface of the manhole cover body, the movable accommodating cavity is provided with a circular groove adjacent to the upper surface, the vulcanized rubber soundproof manhole cover is equipped with a sealing cover, when the pressure block head is not installed on the pressure block body, the sealing cover can be installed on the circular groove to cover the movable accommodating cavity and be spaced from the upper surface of the pressure block body.

6. The vulcanized rubber soundproof manhole cover according to claim 5, characterized in that: The vulcanized rubber soundproof manhole cover also includes a buoyancy mechanism, which includes a buoyancy rocker, a buoyancy ball and a first plug-in structure. A second plug-in structure is provided at a portion of the manhole cover body located within the manhole seat. A buoyancy mechanism mounting frame is connected to the inner wall of the manhole seat. The buoyancy rocker is hinged to the buoyancy mechanism mounting frame. When the manhole cover body is connected in place relative to the manhole seat, the first plug-in structure and the second plug-in structure are plugged and fixed to each other. The buoyancy ball is connected to one end of the buoyancy rocker, and the plug-in structure is connected to the other end of the buoyancy rocker.

7. The vulcanized rubber soundproof manhole cover according to claim 6, characterized in that: The vulcanized rubber soundproof manhole cover also includes a support ring, the buoyancy mechanism mounting frame is connected to the support ring, the support ring can be rotatably installed on the inner side of the manhole seat around the vertical center axis of the manhole seat, the support ring and the annular ear plate are connected by a synchronization rod, when the annular ear plate is rotated to the alignment position, the support ring is rotated to a position where the first plug-in structure and the second plug-in structure are plugged and fixed to each other.

8. The vulcanized rubber soundproof manhole cover according to any one of claims 1 to 7, characterized in that: The elastic sound insulation ring is a vulcanized rubber that is fused through a vulcanization process and coated on the side edge of the manhole cover body.

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