Double-layered manhole cover seat ring

Abstract

The utility model discloses a double -deck formula manhole cover seat ring, include: the well circle, it is the tubular structure of two ends opening, and the inboard surface of well circle is equipped with a plurality of support block for supporting manhole cover, the well circle is used for supporting the lifting device of manhole cover, and the well circle is the tubular structure of two ends opening, wherein the inner diameter of well circle is not less than the inner diameter of well circle, and the bottom end detachable mounting of well circle is on the top end of well circle and the cavity of both is linked and forms the accommodation space for accommodating lifting device, and a plurality of accommodating grooves for lifting device erecting and placing are seted up on the well circle, and accommodating groove is located between two adjacent support blocks. The utility model can realize the effect of supporting manhole cover and lifting device respectively, and reduces the limitation of road installation space to manhole cover installation construction.

Description

Technical Field

[0001] This utility model relates to the field of manhole covers, specifically to a double-layer manhole cover seat ring. Background Technology

[0002] Considering the limited water ingress area of ​​existing manhole covers during heavy rains, adjustable manhole covers are installed in areas prone to flooding. These covers typically collect rainwater through a suspended container. The increased weight pulls on a lifting mechanism, raising the cover above the manhole casing, thus increasing the water ingress area and accelerating the reduction of rainwater on the road.

[0003] For stable lifting of manhole covers, a multi-point synchronous lifting method is typically used. This involves installing multiple lifting devices on the manhole casing, which simultaneously push the edges of the cover to lift it relative to the casing. This significantly increases the wall thickness of the casing and the overall diameter of the manhole cover, making installation more susceptible to road space constraints. It also increases the difficulty of manufacturing the casing and the challenges of later maintenance and repair. While some methods involve lifting by pushing the center of the cover, the lifting device is directly mounted on the cover. The assembled structure of the cover can affect its load-bearing capacity, and the support provided by the casing can also negatively impact the stability of the lifting device. Utility Model Content

[0004] The purpose of this utility model is to provide a double-layer manhole cover seat ring, which can support the manhole cover and the lifting device respectively, and reduce the limitation of road installation space on the installation of manhole covers.

[0005] The technical solution adopted by this utility model to solve the above problems is:

[0006] Double-layer manhole cover seat ring, including:

[0007] The upper well ring is a cylindrical structure with openings at both ends. Several support blocks for supporting the well cover are provided on the inner side of the upper well ring. The support blocks are arranged at equal angles around the central axis of the upper well ring.

[0008] The lower well ring is used to support the lifting device of the well cover. The lower well ring is a cylindrical structure with open ends.

[0009] The inner diameter of the upper well ring is not less than the inner diameter of the lower well ring. The bottom end of the upper well ring is detachably installed on the top end of the lower well ring, and the cavities of the two are connected to form a receiving space for accommodating the lifting device. The lower well ring is provided with several receiving slots for mounting and placing the lifting device. The receiving slots are located between two adjacent support blocks.

[0010] As a further improvement to the above technical solution, a first annular piece is integrally connected to the top of the upper well ring. The first piece is sleeved on the upper well ring and the top surfaces of both are on the same plane. Several first connecting pieces in the shape of triangles are provided between the first piece and the upper well ring. Each first connecting piece is arranged at an equal angle around the central axis of the upper well ring. The two straight edges of the first connecting piece are integrally connected to the bottom surface of the first piece and the side surface of the upper well ring, respectively. A first groove is provided between adjacent first connecting pieces on the bottom surface of the first piece. The first piece forms a first limiting part arranged along its edge through the first groove.

[0011] As a further improvement to the above technical solution, both the upper and lower well rings are made of ductile iron. The inner diameter of the upper well ring is the same as that of the lower well ring. Both the upper and lower well rings are integrally connected with several mating blocks arranged at equal angles around their central axis, and the mating blocks on both correspond one-to-one. The corresponding mating blocks can be connected by bolts. The inner side of the lower well ring is provided with several receiving blocks for the mounting and placement of the lifting device for the well cover. Each receiving block is arranged at equal angles around the central axis of the lower well ring. The receiving blocks are located between two adjacent support blocks, and receiving grooves are opened on the receiving blocks.

[0012] As a further improvement to the above technical solution, a ring-shaped second piece is integrally connected to the bottom end of the lower well ring. The second piece is sleeved on the lower well ring and the bottom surfaces of both are on the same plane. Several triangular second connecting pieces are provided between the second piece and the lower well ring. Each second connecting piece is arranged at an equal angle around the central axis of the lower well ring. The two straight edges of the second connecting pieces are integrally connected to the top surface of the second piece and the side surface of the lower well ring, respectively. A second groove is provided between adjacent second connecting pieces on the top surface of the second piece. The second piece forms a second limiting part arranged along its edge through the second groove.

[0013] As a further improvement to the above technical solution, a third groove is provided on the bottom surface of the second piece, and several through holes are provided in the second groove, so that the second groove and the third groove are connected through the through holes.

[0014] As a further improvement to the above technical solution, the upper well ring is made of ductile iron, the lower well ring is made of concrete, the inner diameter of the upper well ring is larger than the inner diameter of the lower well ring, and a number of mounting blocks are integrally connected to the upper well ring and arranged at equal angles around its central axis. A number of bolts corresponding to the mounting blocks are embedded on the top surface of the lower well ring, and the mounting blocks can be connected to the lower well ring by bolts. The receiving groove is opened along the axial direction of the lower well ring on the inner edge of the lower well ring.

[0015] As a further improvement to the above technical solution, lifting rings are embedded at two opposite positions on the top surface of the lower well ring.

[0016] As a further improvement to the above technical solution, a rubber pad is provided on the top surface of the support block, and an inclined structure is provided on the outer end of the bottom of the support block.

[0017] As a further improvement to the above technical solution, a limiting hole is formed through the support block, and a rubber sleeve is embedded in the limiting hole. The limiting hole is in the shape of an inverted frustum.

[0018] Compared with the prior art, this utility model has the following advantages and effects:

[0019] (1) This utility model can achieve the effect of supporting the manhole cover and the lifting device respectively through the structure of the upper manhole ring and the lower manhole ring. While reducing the load on the manhole cover, it also ensures the stability of the lifting device. Since the lifting device can be directly installed in the space, it improves the convenience of installation and subsequent maintenance, reduces the impact on the wall thickness of the upper and lower manhole rings, reduces the restriction of the road installation space on the manhole cover installation construction, and can also play a role in preventing people from falling into the manhole to a certain extent.

[0020] (2) Since the upper well ring and the lower well ring can be manufactured separately, this utility model reduces the manufacturing difficulty of the well cylinder while ensuring the integrity of the well cylinder structure, thereby ensuring the performance of the lifting manhole cover and reducing manufacturing losses. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of Embodiment 1.

[0022] Figure 2 yes Figure 1 The diagram shows a partial structural schematic of the upper well ring.

[0023] Figure 3 yes Figure 1 The diagram shows a partial structural schematic of the upper well ring.

[0024] Figure 4 yes Figure 3 The diagram shows the structure of the support block.

[0025] Figure 5 yes Figure 1 The diagram shows the connection structure between the upper and lower well rings.

[0026] Figure 6 yes Figure 5 The diagram shows a partial structural schematic of the lower well ring.

[0027] Figure 7 yes Figure 5 The diagram shows a partial structural schematic of the lower well ring.

[0028] Figure 8 This is a partial structural diagram of the upper well ring in Example 2.

[0029] Figure 9 This is a schematic diagram of the structure of Embodiment 3.

[0030] Figure 10 yes Figure 9 The diagram shows the structure of the lower well ring.

[0031] The components include: upper well ring 1, first piece 11, first connecting piece 12, first groove 13, first limiting part 14, decorative groove 15, patterned structure 16, lower well ring 2, receiving groove 21, second piece 22, second connecting piece 23, second groove 24, second limiting part 25, third groove 26, through hole 27, support block 3, straight edge end 4, rubber pad 51, inclined structure 52, connecting block 61, receiving block 62, limiting hole 71, rubber sleeve 72, mounting block 81, bolt 82, and lifting ring 9. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0033] Example 1.

[0034] See Figures 1-7This embodiment of the double-layer manhole cover seat ring includes an upper manhole ring 1 and a lower manhole ring 2. Both the upper manhole ring 1 and the lower manhole ring 2 are cylindrical structures with openings at both ends. The inner side of the upper manhole ring 1 is provided with several support blocks 3 for supporting the manhole cover. Each support block 3 is arranged at an equal angle around the central axis of the upper manhole ring 1. The lower manhole ring 2 is used to support the lifting device of the manhole cover. The inner diameter of the upper manhole ring 1 is not less than the inner diameter of the lower manhole ring 2, which facilitates the placement of the lifting device into the lower manhole ring 2 via the upper manhole ring 1. The bottom end of the upper manhole ring 1 is detachably installed on the top end of the lower manhole ring 2 so that the upper manhole ring 1 and the lower manhole ring 2 are assembled to form a manhole cylinder, and the cavities of the two are connected to form a receiving space for accommodating the lifting device. The lower manhole ring 2 is provided with several receiving slots 21 for mounting and placing the lifting device. Each receiving slot 21 is arranged at an equal angle around the central axis of the lower manhole ring 2. The number of receiving slots 21 is half the number of support blocks 3. The receiving slots 21 are located between two adjacent support blocks 3. Since the upper manhole cover 1 and the lower manhole cover 2 can be manufactured separately, the manufacturing difficulty of the manhole is reduced while ensuring the integrity of the manhole structure, thus guaranteeing the performance of the lifting manhole cover.

[0035] See Figure 2 , Figure 3 The top of the upper manhole cover 1 is integrally connected to a ring-shaped first piece 11. The first piece 11 is fitted onto the upper manhole cover 1, and the top surfaces of both are on the same plane. This increases the effective contact area between the road surface and the upper manhole cover 1, reducing the risk of the manhole cover sinking into the road surface when subjected to external forces (such as driving vehicles). Several triangular first connecting pieces 12 are provided between the first piece 11 and the upper manhole cover 1, which improves the stability of the positional structure between the first piece 11 and the upper manhole cover 1, and allows the first connecting pieces 12 to be hidden between the first piece 11 and the upper manhole cover 1, reducing the risk of accidents to construction workers during the installation of the manhole cover. To mitigate the risk of injury from impacts to the outer end of the first connecting piece 12, each first connecting piece 12 is arranged at equal angles around the central axis of the upper manhole cover 1. The two straight edges 4 of the first connecting piece 12 are integrally connected to the bottom surface of the first piece 11 and the side surface of the upper manhole cover 1, respectively. A first groove 13 is provided between adjacent first connecting pieces 12 on the bottom surface of the first piece 11. The first piece 11 forms a first limiting part 14 arranged along its edge through the first groove 13, which improves the embedding degree of the first piece 11 on the road surface and ensures that the displacement of the upper manhole cover 1 is restricted by the first piece 11, thus ensuring the stability of the manhole cover installation position on the road surface.

[0036] To improve the visibility of manhole covers on road surfaces and enhance their decorative effect, a decorative groove 15 is provided on the top surface of the first piece 11, and a patterned structure 16 is provided inside the decorative groove 15.

[0037] See Figure 4The top surface of the support block 3 is provided with a rubber pad 51, which can increase the friction between the manhole cover and the support block 3, and increase the difficulty of the manhole cover shifting inside the upper manhole ring 1 and causing the two to collide, thereby reducing the occurrence of abnormal noises during the use of the manhole cover. The outer end of the bottom of the support block 3 is provided with a sloping structure 52, which allows the support block 3 and the upper manhole ring 1 to form a triangular support structure, thereby ensuring the support effect of the support block 3 on the manhole cover.

[0038] See Figure 5 , Figure 6 Both the upper well ring 1 and the lower well ring 2 are made of ductile iron. The inner diameter of the upper well ring 1 is the same as that of the lower well ring 2. Both the upper well ring 1 and the lower well ring 2 are integrally connected with several mating blocks 61 arranged at equal angles around their central axis, and the mating blocks 61 on both are one-to-one. The corresponding mating blocks 61 can be connected by bolts, which ensures the convenience of assembling the upper well ring 1 and the lower well ring 2 to form a well shaft. The inner side of the lower well ring 2 is provided with several receiving blocks 62 for mounting and placing the lifting device for the well cover. Each receiving block 62 is arranged at equal angles around the central axis of the lower well ring 2. The receiving block 62 is located between two adjacent support blocks 3. The receiving groove 21 is opened on the receiving block 62, which facilitates the installation and disassembly of the lifting device in the well shaft and reduces the difficulty of subsequent maintenance and replacement of the lifting device.

[0039] See Figure 6 The bottom end of the lower manhole ring 2 is integrally connected to a ring-shaped second piece 22. The second piece 22 is fitted onto the lower manhole ring 2, and the bottom surfaces of both are on the same plane. This increases the difficulty of detaching the lower manhole ring 2 from the road surface and ensures the stability of the lower manhole ring 2 installation within the road surface. Several triangular second connecting pieces 23 are provided between the second piece 22 and the lower manhole ring 2. This ensures the stability of the positional structure between the second piece 22 and the lower manhole ring 2, while also reducing the risk of injury to construction workers from the outer ends of the second connecting pieces 23. To reduce the risk of scratches, each of the second connecting pieces 23 is arranged at equal angles around the central axis of the lower manhole ring 2. The two straight edges 4 of the second connecting pieces 23 are integrally connected to the top surface of the second piece 22 and the side surface of the lower manhole ring 2. A second groove 24 is provided between adjacent second connecting pieces 23 on the top surface of the second piece 22. The second piece 22 forms a second limiting part 25 arranged along its edge through the second groove 24, which increases the difficulty of the lower manhole ring 2 shifting in the road surface and ensures the stability of the manhole cover installation position on the road surface.

[0040] See Figure 7 The bottom surface of the second piece 22 is provided with a third groove 26, and a number of through holes 27 are provided in the second groove 24. The second groove 24 and the third groove 26 are connected through the through holes 27, which improves the degree of wrapping of the lower manhole ring 2 in the road surface, thereby ensuring the displacement restriction effect of the road surface on the lower manhole ring 2.

[0041] Example 2.

[0042] See Figure 8 The structure of this embodiment is basically the same as that of the double-layer manhole cover seat ring in Embodiment 1. The difference is that a limiting hole 71 is opened through the support block 3, and a rubber sleeve 72 is embedded in the limiting hole 71, so that the manhole cover can be installed on the upper manhole ring 1 by plugging it in. This increases the difficulty of moving the manhole cover relative to the upper manhole ring 1, thereby reducing the risk of abnormal noise caused by collision between the manhole cover and the upper manhole ring 1. The limiting hole 71 is in the shape of an inverted frustum, which not only guides the installation of the manhole cover on the upper manhole ring 1, but also increases the effective contact area when the support block 3 supports the manhole cover, thus improving the support effect of the manhole cover.

[0043] Example 3.

[0044] See Figure 9 , Figure 10 The structure of this embodiment is basically the same as that of Embodiment 1 and Embodiment 2, except that: the upper well ring 1 is made of ductile iron and the lower well ring 2 is made of concrete. This improves the ease of manufacturing the lower well ring 2 and reduces the manufacturing cost. The inner diameter of the upper well ring 1 is larger than that of the lower well ring 2. Several mounting blocks 81 are integrally connected to the outer surface of the upper well ring 1 and are arranged at equal angles around its central axis. Several bolts 82 corresponding to the mounting blocks 81 are embedded on the top surface of the lower well ring 2. The mounting blocks 81 can be connected to the lower well ring 2 through the bolts 82, which ensures the ease of assembling the upper well ring 1 and the lower well ring 2 to form a well shaft. The receiving groove 21 is opened along the axial direction of the lower well ring 2 on the inner edge of the lower well ring 2, which facilitates the installation and disassembly of the lifting device in the well shaft and reduces the difficulty of subsequent maintenance and replacement of the lifting device.

[0045] See Figure 10 Lifting rings 9 are embedded at two opposite positions on the top surface of the lower well ring 2, which facilitates the construction personnel to place the lower well ring 2 on the well seat of the manhole by lifting.

[0046] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A double-layer manhole cover seat ring, characterized in that, include: The upper well ring is a cylindrical structure with openings at both ends. Several support blocks for supporting the well cover are provided on the inner side of the upper well ring. The support blocks are arranged at equal angles around the central axis of the upper well ring. The lower well ring is used to support the lifting device of the well cover. The lower well ring is a cylindrical structure with open ends. The inner diameter of the upper well ring is not less than the inner diameter of the lower well ring. The bottom end of the upper well ring is detachably installed on the top end of the lower well ring, and the cavities of the two are connected to form a receiving space for accommodating the lifting device. The lower well ring is provided with several receiving slots for mounting and placing the lifting device. The receiving slots are located between two adjacent support blocks.

2. The double-layer manhole cover seat ring according to claim 1, characterized in that: The top of the upper well ring is integrally connected to a first ring-shaped piece. The first piece is fitted onto the upper well ring, and the top surfaces of both are on the same plane. Several triangular first connecting pieces are provided between the first piece and the upper well ring. Each first connecting piece is arranged at an equal angle around the central axis of the upper well ring. The two straight edges of the first connecting pieces are integrally connected to the bottom surface of the first piece and the side surface of the upper well ring, respectively. A first groove is provided between adjacent first connecting pieces on the bottom surface of the first piece. The first piece forms a first limiting part arranged along its edge through the first groove.

3. The double-layer manhole cover seat ring according to claim 1, characterized in that: Both the upper and lower well rings are made of ductile iron. The inner diameter of the upper well ring is the same as that of the lower well ring. Both the upper and lower well rings are integrally connected with several mating blocks arranged at equal angles around their central axis, and the mating blocks on both rings correspond one-to-one. The corresponding mating blocks can be connected by bolts. The inner side of the lower well ring is provided with several receiving blocks for the mounting and placement of the lifting device for the well cover. Each receiving block is arranged at equal angles around the central axis of the lower well ring. The receiving blocks are located between two adjacent support blocks, and receiving grooves are opened on the receiving blocks.

4. The double-layer manhole cover seat ring according to claim 3, characterized in that: The bottom end of the lower well ring is integrally connected to a second ring-shaped piece. The second piece is fitted onto the lower well ring, and the bottom surfaces of both are on the same plane. Several triangular second connecting pieces are provided between the second piece and the lower well ring. Each second connecting piece is arranged at an equal angle around the central axis of the lower well ring. The two straight edges of the second connecting pieces are integrally connected to the top surface of the second piece and the side surface of the lower well ring, respectively. A second groove is provided between adjacent second connecting pieces on the top surface of the second piece. The second piece forms a second limiting part arranged along its edge through the second groove.

5. The double-layer manhole cover seat ring according to claim 4, characterized in that: A third groove is formed on the bottom surface of the second piece, and several through holes are formed in the second groove. The second groove and the third groove are connected through the through holes.

6. The double-layer manhole cover seat ring according to claim 1, characterized in that: The upper well ring is made of ductile iron, and the lower well ring is made of concrete. The inner diameter of the upper well ring is larger than that of the lower well ring. Several mounting blocks are integrally connected to the upper well ring and arranged at equal angles around its central axis. Several bolts corresponding to the mounting blocks are embedded on the top surface of the lower well ring. The mounting blocks can be connected to the lower well ring by bolts. The receiving groove is opened along the axial direction of the lower well ring on the inner edge of the lower well ring.

7. The double-layer manhole cover seat ring according to claim 6, characterized in that: Lifting rings are embedded at two opposite positions on the top surface of the lower well ring.

8. The double-layer manhole cover seat ring according to claim 1, characterized in that: The top surface of the support block is provided with a rubber pad, and the outer end of the bottom of the support block is provided with a sloping structure.

9. The double-layer manhole cover seat ring according to claim 1, characterized in that: A limiting hole is formed through the support block, and a rubber sleeve is embedded in the limiting hole. The limiting hole is in the shape of an inverted frustum.

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