Preform concrete inspection well reserved hole preformed member and its pipe body connecting member

Abstract

The utility model provides a new structure of prefabricated concrete inspection well and pipeline connection sealing. The embedded part of the prefabricated concrete inspection well reserved hole is integrally poured with the concrete and is arranged on the well wall of the inspection well, the inner cavity space of the embedded part forms the inspection well reserved hole for connecting with the pipeline, the outer ring wall of the embedded part is provided with the rib muscle engaged with the concrete, the outer ring wall of the embedded part is provided with the outer arc along the edge at the outside end of the inspection well, and the inner ring wall of the embedded part is provided with the inner arc along the edge at the inside end of the inspection well. The embedded part and the pipeline connection component include the rubber sealing ring and the rubber sealing ring which are hung on the pipeline. The embedded part of the concrete inspection well reserved hole provided by the utility model is arranged through the integral pouring, the inner cavity surface of the embedded part is smooth, the sealing lip provided on the outer wall of the rubber sealing ring has good anti-leakage sealing effect between the surface of the embedded part and the smooth inner cavity.

Description

Technical Field

[0001] This utility model belongs to the field of building materials technology, and relates to a precast concrete component for building and road water supply and drainage, specifically to a precast concrete manhole pre-reserved hole embedded part and its connection component with the pipe body. Background Technology

[0002] Concrete inspection wells are prefabricated underground facilities constructed from concrete, mortar, and other materials using a casting process. They are primarily used for the inspection and maintenance of municipal infrastructure such as urban drainage, water supply, power, and telecommunications. These facilities come in two structural types: circular and rectangular. The pre-drilled openings in concrete inspection wells must be accurately positioned during prefabrication, mainly for later pipe connections. Sealing the pipe interfaces in concrete inspection wells is a major challenge in the industry, requiring consideration of three conflicting factors: the rigidity of concrete and the potential for pipe settlement; unavoidable errors in the construction of pre-drilled holes; and the need for waterproofing materials to withstand sewage corrosion. Users may have already encountered problems such as water seepage or groundwater backflow due to seal failure.

[0003] Chinese Patent Publication No. CN220620372U discloses a utility model patent entitled "A Flexible Connection Structure between Precast Concrete Inspection Manhole and Pipeline," which includes a precast concrete inspection manhole, a precast concrete short pipe, and an inspection manhole sealing ring. The precast concrete inspection manhole includes a precast concrete inspection manhole body with a circular pre-drilled hole on its inner side. The precast concrete short pipe is installed inside the circular pre-drilled hole through the inspection manhole sealing ring. The inner surface of the inspection manhole sealing ring has an inner surface ridge, and the outer surface of the inspection manhole sealing ring has an outer surface ridge. An outer flange is fixedly connected to one side of the inner and outer surface ridges. The main purpose is to solve the problems of ease of installation, stability, and sealing of the precast concrete short pipe in the pre-drilled hole of the precast concrete inspection manhole.

[0004] The current construction process of connecting concrete inspection wells and pipelines using the aforementioned patented technology solutions presents the following technical drawbacks: 1) The pre-drilled holes in the precast concrete inspection wells are directly installed in the well wall. The inner wall of the pre-drilled hole is relatively rough, and the raised ridges on the inner surface of the sealing ring cannot fully seal against the rough inner wall of the pre-drilled hole. Furthermore, during installation, the rough inner wall of the pre-drilled hole can scratch the raised ridges on the surface of the sealing ring, thus affecting the seal between the precast concrete inspection well and the connecting pipeline. 2) A single sealing ring is used to seal the precast concrete short pipe within the pre-drilled hole of the precast concrete inspection well, and this sealing ring is located at the outer end of the pre-drilled hole. Water can accumulate in the pre-drilled hole near the sealing ring. When the air pressure or pressure in the precast concrete inspection well is too high, the accumulated water can break through the edge of the sealing ring, leading to leakage. Summary of the Invention

[0005] To address the aforementioned problems in the existing technology, this utility model provides a novel structure for sealing the connection between a precast concrete inspection well and the pipe body. In this utility model, the reserved opening of the precast concrete inspection well adopts an integrated casting and embedding molding technology, the inner wall surface of the reserved opening of the inspection well is smooth, and the reserved opening of the inspection well and the outer pipe body are sealed with a double seal, both internally and externally.

[0006] The technical solution adopted by the pre-embedded part of the precast concrete inspection well reserved hole of this utility model includes: the pre-embedded part of the precast concrete inspection well reserved hole of this utility model is integrally cast with the concrete and installed through the well wall of the inspection well, and the inner cavity space of the pre-embedded part forms the inspection well reserved hole for connection with the pipe body.

[0007] The outer ring wall of the embedded part is provided with ribs that mesh with the concrete. The outer ring wall of the embedded part is provided with an outer arc edge at the outer end of the inspection well, and its inner ring wall is provided with an inner arc edge at the inner end of the inspection well.

[0008] Furthermore, in the precast concrete inspection well reserved hole of this utility model, the precast part is flush with the inner and outer walls of the inspection well, the outer end face of the precast part corresponds to the shape of the outer wall of the inspection well, and the inner end face of the precast part corresponds to the shape of the inner wall of the inspection well.

[0009] Furthermore, in the pre-embedded part of the precast concrete inspection well reserved hole of this utility model, the outer shape of the outer arc edge of the pre-embedded part corresponds to the shape of the outer wall of the inspection well, the outer shape of the inner arc edge of the pre-embedded part corresponds to the shape of the inner wall of the inspection well, and the inner surface shape of the inner arc edge of the pre-embedded part corresponds to the shape of the inner wall of the inspection well.

[0010] Optionally, the embedded part of the precast concrete inspection well reserved hole of this utility model has an inner surface of the inner arc edge that is consistent with the front end face I of the pipe body.

[0011] Optionally, the embedded part of the precast concrete inspection well reserved hole of this utility model has a straight inner surface along the inner arc edge.

[0012] Furthermore, in the pre-embedded component for the reserved hole of the precast concrete inspection well of this utility model, the ribs include staggered circumferential ribs and longitudinal ribs. Preferably, the ribs include two staggered circumferential ribs and four longitudinal ribs.

[0013] Furthermore, in the pre-embedded part of the precast concrete inspection well reserved hole of this utility model, the pre-embedded part is provided with an extended cavity on the outer side of the outer arc edge. The inner diameter of the extended cavity is consistent with the inner diameter of the inner cavity of the pre-embedded part.

[0014] The technical solution adopted by the pre-embedded parts of the reserved holes of the precast concrete inspection well and the connecting components with the pipe body of this utility model includes the following.

[0015] This utility model relates to an embedded part for a pre-drilled hole in a precast concrete inspection well and its connecting component with the pipe body. The pipe body connecting component includes a rubber sealing ring and a rubber sealing ring that are fitted onto the pipe body for sealing the pipe body and the embedded part. The rubber sealing ring is fitted onto the front end face I of the pipe body, and its outer ring wall has a sealing lip for contacting the inner cavity of the embedded part. The rubber sealing ring is fitted onto the end where the pipe body connects to the outer arc edge of the embedded part, and the rubber sealing ring provides a secondary seal between the pipe body and the inner ring wall of the embedded part.

[0016] Furthermore, in the pre-embedded component of the precast concrete inspection well reserved hole of this utility model, which is connected to the pipeline, the cross-sectional shape of the rubber sealing ring is a trapezoidal cone shape that is narrow at the front and wide at the back.

[0017] Furthermore, in the pre-embedded part of the precast concrete inspection well reserved hole of this utility model, the shape of the front end face II of the rubber sealing ring is consistent with the shape of the inner surface of the inner arc edge of the pre-embedded part.

[0018] Optionally, in the pre-embedded component of the precast concrete inspection well of this utility model, which is connected to the pipe body, the front end face II of the rubber sealing ring is provided with a buffer portion. The shape of the front end face III of the buffer portion is consistent with the inner surface of the inner arc edge of the pre-embedded component, and the front end face III of the buffer portion abuts against the inner surface of the inner arc edge of the pre-embedded component.

[0019] The beneficial effects of this utility model are as follows.

[0020] 1. The pre-reserved hole for the concrete inspection well provided by this utility model is set by an integrally cast embedded part. The inner cavity surface of the embedded part is smooth, and the sealing lip set on the outer wall of the rubber sealing ring has a good anti-leakage sealing effect between it and the smooth inner cavity surface of the embedded part. The inner wall end of the embedded part is provided with an inner arc edge, which can effectively control the depth of the pipe body inserted into the inner cavity of the embedded part, enhance the sealing effect between the front end face of the pipe body and the inner cavity of the embedded part, and effectively control the depth of the pipe body inserted into the inner cavity of the embedded part 1.

[0021] 2. The front end of the pipe body and the interior of the embedded part of this utility model are sealed with a rubber sealing ring as the first sealing, and the opening of the pipe body and the embedded part is sealed with a rubber sealing ring. The concrete inspection well with double sealing is more practical in municipal engineering than the existing single-seal inspection well.

[0022] 3. The pre-embedded part of the pre-reserved hole of the concrete inspection well provided by this utility model is provided with an extended cavity at the front end. The extended cavity of the pre-embedded part can effectively solve the technical problem of short sealing contact between the thin-walled concrete inspection well and the pipe body.

[0023] 4. The rubber sealing ring used for the first sealing between the pipe body and the embedded part described in this utility model has a buffer part at the front end. The buffer part of the rubber sealing ring can adjust the width of the rubber sealing ring according to the depth of the pipe body inserted into the embedded part, so that the rubber sealing ring can adapt to the construction requirements of different distances between the front end of the pipe body and the inner arc edge of the embedded part.

[0024] The beneficial effects of this utility model are not limited to this description. For better understanding, a more detailed description is provided in the specific implementation section. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the embedded part of the present invention used for the reserved hole of a circular concrete inspection well.

[0027] Figure 2 This is a two-dimensional schematic diagram of the embedded part for the reserved hole of the circular concrete inspection well described in this utility model.

[0028] Figure 3 This is a three-dimensional schematic diagram of the rubber sealing ring at two angles in the pipe body connecting component of this utility model.

[0029] Figure 4 This is a two-dimensional longitudinal section schematic diagram of the overall structure of the embedded part of the present invention used for the reserved hole of a circular concrete inspection well.

[0030] Figure 5 This is a three-dimensional schematic diagram of the overall structure of the embedded part of the present invention used for the reserved hole of a rectangular concrete inspection well.

[0031] Figure 6 This is a two-dimensional longitudinal section schematic diagram of the overall structure of the embedded part used for the reserved hole of a rectangular concrete inspection well according to the present invention.

[0032] Figure 7 This is a two-dimensional schematic diagram of the embedded part for the reserved hole of the rectangular concrete inspection well described in this utility model.

[0033] Figure 8 This is a schematic diagram of the first embodiment of the pre-embedded part, rubber sealing ring and pipe body sealing connection described in this utility model.

[0034] Figure 9This is a schematic diagram of the second embodiment of the pre-embedded part, rubber sealing ring and pipe body sealing connection described in this utility model.

[0035] Figure 10 This is a schematic diagram of the third embodiment of the pre-embedded part, rubber sealing ring and pipe body sealing connection described in this utility model.

[0036] Figure 11 This is a three-dimensional schematic diagram of the structure of the pre-embedded part extension cavity and the rubber sealing ring buffer part described in this utility model. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0039] The following description, in conjunction with the accompanying drawings and specific embodiments, further elaborates on the embedded parts of the precast concrete inspection well reserved holes and the embedded parts in the connecting components with the pipe body of the present invention.

[0040] The reserved opening of the precast concrete inspection well adopts the integrated casting and embedding technology. That is, the reserved opening of the concrete inspection well is formed by setting the embedded parts in advance during the casting process. The embedded parts have a smooth inner surface and can be made of polypropylene (PP), polyethylene (PE), high-density polyethylene (HDPE), low-density polyethylene (LDPE), polystyrene (PS), polycarbonate (PC), polyvinyl chloride (PVC), polyamide (nylon), thermosetting plastics (such as phenolic resin, epoxy resin), etc.

[0041] like Figure 1 Figure 5 As shown, this utility model is an embedded part for a reserved hole in a precast concrete inspection well. The embedded part 1 is a tubular structure with internal and external penetration. The embedded part 1 is integrally cast with the concrete and penetrates the wall of the precast concrete inspection well 2. The internal cavity 1a of the embedded part 1 forms the reserved hole 21 of the inspection well 2 for connection with the pipe body 3.

[0042] like Figure 2 Figure 7 As shown, to enhance the connection strength between the embedded part 1 and the precast concrete manhole 2 after casting and forming, and to prevent the embedded part 1 from loosening or falling off the wall of the precast concrete manhole 2, the outer ring wall 1b of the embedded part 1 is provided with ribs 10 that mesh with the concrete. The ribs 10 effectively enhance the connection strength between the embedded part 1 and the precast concrete manhole 2 after casting and forming, and also prevent sewage in the precast concrete manhole 2 from seeping out through the casting connection gap between the embedded part 1 and the manhole 2.

[0043] refer to Figure 1 , Figure 5 , Figure 2 , Figure 7 As shown, to ensure the integrity of the outer wall 2a of the precast concrete inspection well 2 surrounding the embedded part 1 and to prevent concrete damage and cracking around the embedded part 1, the outer ring wall 1b of the embedded part 1 has an outer arc edge 11 located on the outer wall 2a of the inspection well 2. During the pouring process of the precast concrete inspection well 2, the outer arc edge 11 of the embedded part 1 is embedded into the outer wall 2a of the concrete inspection well 2. The outer arc edge 11 of the embedded part 1 can effectively prevent concrete damage and cracking on the outer wall 2a where the concrete inspection well 2 is connected to the embedded part 1.

[0044] refer to Figure 1 , Figure 5 , Figure 2 , Figure 7 As shown, to effectively control the insertion depth of the pipe body 3 into the inner cavity 1a of the embedded part 1, and to prevent the pipe body 3 from being directly inserted into the inspection well 2 through the embedded part 1, while also enhancing the sealing effect between the front end face Ie of the pipe body 3 and the inner cavity 1a of the embedded part 1, the inner ring wall 1c of the embedded part 1 is provided with an inner arc edge 12 at the end of the inner wall 2b of the inspection well 2. After the pipe body 3 is connected to the concrete inspection well 2 through the embedded part 1, the front end face Ie of the pipe body 3 rests against the inner arc edge 12 of the embedded part 1, or the front end face Ie of the pipe body 3 rests against the inner arc edge 12 of the embedded part 1 through the rubber sealing ring 4.

[0045] The following description, in conjunction with the accompanying drawings and specific embodiments, further elaborates on the embedded parts of the precast concrete inspection well reserved holes and the pipe connecting components in the pipe body connection components of this utility model.

[0046] The pipe connection component of the pre-embedded part for the reserved hole of the precast concrete inspection well of the present invention, such as Figure 1 Figure 5 Figure 11 As shown, the connection between the embedded part 1 and the pipe body 3 includes a rubber sealing ring 4. (As indicated...) Figure 3As shown, the outer ring wall of the rubber sealing ring 4 is provided with a sealing lip 41. In this embodiment, multiple sealing lips 41 can be provided on the outer ring wall of the rubber sealing ring 4. The front end of the inner ring wall 4b of the rubber sealing ring 4 is provided with a protruding ring 42. Reference Figure 1 Figure 5 As shown, the rubber sealing ring 4 is sleeved on the front end of the pipe body 3 through the inner ring wall 4b, and the front end face Ie of the pipe body 3 abuts against the convex ring 42 of the rubber sealing ring 4. The rubber sealing ring 4 is used for the first seal between the pipe body 3 and the inner ring wall 1c of the embedded part 1.

[0047] The pipe connection component of the pre-embedded part for the reserved hole of the precast concrete inspection well of the present invention, such as Figure 1 Figure 5 As shown, the connection between the embedded part 1 and the pipe body 3 includes a rubber sealing ring 5, which is sleeved on the pipe body 3 and located at the rear end of the rubber sealing ring 4. (Reference) Figure 4 Figure 6 As shown, the rubber sealing ring 5 is looped around the end where the pipe body 3 connects to the outer arc edge 11 of the embedded part 1. The rubber sealing ring 5 is used for secondary sealing between the pipe body 3 and the inner ring wall 1c of the embedded part 1.

[0048] Referring to the above embodiments of the pipe connection components of the pre-embedded parts for the reserved holes of precast concrete inspection wells in this invention... Figure 4 Figure 6 As shown, after the pipe body 3 is connected to the inspection well 2 through the embedded part 1, the front end face IIf of the rubber sealing ring 4 abuts against the inner surface d of the inner arc edge 12 of the embedded part 1 (reference). Figure 2 Figure 7 As shown, the sealing lip 41 on the outer ring wall of the rubber sealing ring 4 tightly contacts the body wall of the inner cavity 1a of the embedded part 1, for the first seal between the pipe body 3 and the embedded part 1. The rubber sealing ring 5 is embedded in the pipe body 3 at the position of the outer arc edge 11 of the embedded part 1, and the rubber sealing ring 5 is used for the second seal between the pipe body 3 and the inner wall of the embedded part 1.

[0049] The present invention will be further described below with reference to specific embodiments of circular and rectangular precast concrete inspection wells.

[0050] Figure 1 Figure 2 As shown, the precast concrete inspection well 2 described in this embodiment is cylindrical. The embedded part 1 is flush with the inner and outer walls of the cylindrical inspection well 2. The arc shape of the outer end face of the embedded part 1 corresponds to the arc shape of the outer wall 2a of the cylindrical inspection well 2, and the arc shape of the inner end face b of the embedded part 1 corresponds to the arc shape of the inner wall 2b of the cylindrical inspection well 2.

[0051] Further reference Figure 1 Figure 2As shown, in the above embodiment where the precast concrete inspection well 2 is cylindrical, the outer arc shape c of the outer edge 11 of the embedded part 1 corresponds to the arc shape 2a of the outer wall of the inspection well 2. The outer arc shape c of the inner edge 12 of the embedded part 1 corresponds to the arc shape 2b of the inner wall of the inspection well 2, and the inner arc shape d of the inner edge 12 of the embedded part 1 corresponds to the arc shape 2b of the inner wall of the inspection well 2.

[0052] Figure 5 Figure 7 As shown, the precast concrete inspection well 2 described in this embodiment is rectangular cylindrical. The embedded part 1 is flush with the inner and outer walls of the rectangular cylindrical inspection well 2. The outer end face a of the embedded part 1 is straight and corresponds to the straight outer wall 2a of the cylindrical inspection well 2. The inner end face b of the embedded part 1 is straight and corresponds to the straight inner wall 2b of the cylindrical inspection well 2.

[0053] Further reference Figure 5 Figure 7 As shown, in the above embodiment where the precast concrete inspection well 2 is rectangular, the outer surface c of the outer arc edge 11 of the embedded part 1 is straight and corresponds to the straight outer wall 2a of the inspection well 2. The outer surface c of the inner arc edge 12 of the embedded part 1 is straight and corresponds to the straight inner wall 2b of the inspection well 2, and the inner surface d of the inner arc edge 12 of the embedded part 1 is straight and corresponds to the straight inner wall 2b of the inspection well 2.

[0054] In the above embodiment of the precast concrete inspection well being cylindrical, in order to ensure the airtightness of the connection between the embedded part, the rubber sealing ring and the pipe body, the inner end face of the inner arc edge of the embedded part, the front end face of the rubber sealing ring and the front end face of the pipe body can be set into the following matching shape.

[0055] Further options such as Figure 8 As shown, the front end face Ie of the pipe body 3 is configured as an arc-shaped ring edge 3a, which is consistent with the arc shape of the inner surface d of the inner arc edge 12 of the embedded part 1. The convex ring 42 of the rubber sealing ring 4 is configured as an arc shape consistent with the shape of the arc-shaped ring edge 3a of the front end face Ie of the pipe body 3. The front end face IIf of the rubber sealing ring 4 is configured as an arc shape consistent with the inner surface d of the inner arc edge 12 of the embedded part 1. The arc-shaped ring edge 3a at the front end of the pipe body 3 is connected and sealed to the inner arc surface d of the inner arc edge 12 of the embedded part 1 through the rubber sealing ring 4.

[0056] Further optional Figure 9 As shown, the front end face Ie of the pipe body 3 is configured as a straight ring edge 3b, and the convex ring 42 of the front end face IIf of the rubber sealing ring 4 is configured as a straight shape consistent with the shape of the straight ring edge 3b of the front end face Ie of the pipe body 3. The front end face IIf of the rubber sealing ring 4 is configured as an arc shape consistent with the inner surface d of the inner arc edge 12 of the embedded part 1. The straight ring edge 3b at the front end of the pipe body 3 is connected and sealed to the arc-shaped inner surface d of the inner arc edge 12 of the embedded part 1 through the rubber sealing ring 4.

[0057] Further optional Figure 10 As shown, the front end face Ie of the pipe body 3 is configured as a straight annular edge 3b, and the convex ring 42 of the front end face IIf of the rubber sealing ring 4 is configured as a straight annular shape consistent with the shape of the straight annular edge 3b of the front end face Ie of the pipe body 3. The inner side 12a of the inner arc edge 12 of the embedded part 1 is configured as a straight shape. The front end face IIf of the rubber sealing ring 4 is configured as a straight shape consistent with the inner surface d of the inner arc edge 12 of the embedded part 1. The straight annular edge 3b of the front end of the pipe body 3 is connected and sealed to the straight inner surface d of the inner arc edge 12 of the embedded part 1 through the rubber sealing ring 4.

[0058] In the above embodiment of the pipe connection component of the pre-embedded part of the precast concrete inspection well reserved hole of the present invention, in order to improve the ease of installation of the rubber sealing ring, refer to Figure 4 Figure 6 As shown, the cross-sectional shape of the rubber sealing ring 5 is a trapezoidal cone that is narrow at the front and wide at the back. The rubber sealing ring 5 is narrow in the direction inside the embedded part 1 and wide in the direction outside the embedded part 1 within the gap between the embedded part 1 and the pipe body 3.

[0059] In the above embodiment of the pre-embedded part shape structure of the pre-reserved hole of the precast concrete inspection well of the present invention, in order to further improve the meshing connection force between the pre-embedded part and the concrete on the precast concrete inspection well pipe wall, and to further avoid the slight lateral rolling and longitudinal displacement of the pre-embedded part on the precast concrete inspection well pipe wall.

[0060] As an optional technical solution, refer to Figure 2 Figure 7 As shown, the outer ring wall 1b of the embedded part 1 is provided with ribs 10, including staggered annular ribs 10a and longitudinal ribs 10a. In the attached drawings of this embodiment, the ribs 10 include two staggered annular ribs 10a and four longitudinal ribs 10b.

[0061] In national standards, the wall thickness of precast concrete manholes is a value that needs to be determined through comprehensive design based on multiple factors such as manhole depth, manhole diameter, earth pressure, water pressure, ground load, concrete strength, reinforcement, and construction requirements, and is generally between 120mm and 300mm. To ensure that the embedded part described in this invention can adapt to different manhole wall thicknesses while also meeting the required sealing strength for connection with the pipe body, the embedded part is also provided with a structure for extending the sealing connection with the pipe body.

[0062] Specific Figure 11As shown in the above embodiment of the pre-embedded part shape structure of the pre-reserved hole of the precast concrete inspection well of the present invention, the pre-embedded part 1 has an extended cavity 13 at the front end of the outer arc edge 11. The extended cavity 13 of the pre-embedded part 1 is completely exposed on the outside of the outer wall 2a of the concrete inspection well 2, and the inner diameter of the extended cavity 13 is consistent with the inner diameter of the inner cavity of the pre-embedded part 1. The rubber sealing ring 5 is set in the gap between the pipe body 3 and the front end of the extended cavity 13. The setting of the extended cavity 13 at the front end of the pre-embedded part 1 can effectively solve the problem of the stability and airtightness of the connection between the thin-walled precast concrete inspection well 2 and the pipe body 3.

[0063] In real-world municipal engineering projects, several precast concrete inspection wells are installed in the middle of a long pipe. Two precast concrete inspection wells are connected by a section of pipe. To improve the sealing performance of the connection between the two precast concrete inspection wells and the section of pipe, and to further promote the connection elasticity between the precast concrete inspection wells, in the above embodiment of the pipe connection component of the embedded part of the present invention, the rubber sealing ring can be equipped with a buffer mechanism to give it an elastic buffering function.

[0064] Specific Figure 11 As shown, the front end face IIf of the rubber sealing ring 4 is provided with a buffer portion 4b, which is composed of a connecting body 4b1 and a contact body 4b2. The contact body 4b2 is connected to one end of the connecting body 4b1, and the other end of the connecting body 4b1 is connected to the front end face IIf of the rubber sealing ring 4. The shape of the front end face III of the contact body 4b2 of the buffer portion 4b is consistent with the shape of the inner surface d of the inner arc edge 12 of the embedded part 1, and the contact body 4b2 abuts against the inner surface d of the inner arc edge 12 of the embedded part 1.

[0065] refer to Figure 1 Figure 4 Figure 11 As shown, when the pipe body 3 is inserted into the embedded part 1, the buffer part 4b at the front end of the rubber sealing ring 4 has a sealing adjustment function for the distance between the pipe body 3 and the inner surface d of the inner arc edge 12 of the embedded part 1. When the pipe body 3 is inserted too deeply into the embedded part 1, the connecting body 4b1 of the buffer part 4b of the rubber sealing ring 4 protrudes upward. The rubber sealing ring 4 adjusts the depth of the pipe body 3 inserted into the embedded part 1 by the height of the upward protrusion of the connecting body 4b1 of the buffer part 4b, thereby enhancing the seal between the pipe body 3 and the inner surface d of the inner arc edge 12 of the embedded part 1 at different distances.

[0066] The above is a detailed description of the embedded parts for the reserved holes of precast concrete inspection wells and their connecting components with the pipe body provided in the embodiments of this utility model. For those skilled in the art, based on the ideas of the embodiments of this utility model, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be construed as a limitation of this utility model, and any changes made in accordance with the design concept of this utility model are within the protection scope of this utility model.

Claims

1. An embedded part for a precast concrete inspection well with reserved holes, characterized in that, The embedded part (1) is integrally cast with the concrete and is installed through the well wall of the inspection well (2). The space of the inner cavity (1a) of the embedded part (1) forms a reserved hole (21) for the inspection well (2) to be connected with the pipe body (3). The outer ring wall (1b) of the embedded part (1) is provided with ribs (10) that mesh with the concrete. The outer ring wall (1b) of the embedded part (1) is located on the outer wall (2a) of the inspection well (2) and has an outer arc edge (11). The inner ring wall (1c) of the embedded part (1) is located on the inner wall (2b) of the inspection well (2) and has an inner arc edge (12).

2. The embedded part for the reserved hole of the precast concrete inspection well according to claim 1, characterized in that, The embedded part (1) is flush with the inner and outer walls of the inspection well (2), with its outer end face (a) corresponding to the shape of the outer wall (2a) of the inspection well (2) and its inner end face (b) corresponding to the shape of the inner wall (2b) of the inspection well (2).

3. The embedded part for the reserved hole of the precast concrete inspection well according to claim 1, characterized in that, The outer (c) shape of the outer arc edge (11) corresponds to the shape of the outer wall (2a) of the inspection well (2), and the outer (c) shape of the inner arc edge (12) corresponds to the shape of the inner wall (2b) of the inspection well (2); the inner (d) shape of the inner arc edge (12) corresponds to the shape of the inner wall (2b) of the inspection well (2).

4. The embedded part for the reserved hole of the precast concrete inspection well according to claim 1, characterized in that, The inner surface (d) of the inner arc edge (12) is consistent with the front end surface (e) of the tube body (3); or the inner surface (d) of the inner arc edge (12) is straight.

5. The embedded part for the reserved hole of the precast concrete inspection well according to claim 1, characterized in that, The ribs (10) include staggered circumferential ribs (10a) and longitudinal ribs (10b).

6. The embedded part for the reserved hole of the precast concrete inspection well according to claim 1, characterized in that, The embedded part (1) has an extended cavity (13) at the front end of the outer arc edge (11); the inner diameter of the extended cavity (13) is consistent with the inner diameter of the inner cavity (1a) of the embedded part (1).

7. The embedded part for the reserved hole of the precast concrete inspection well according to claim 1, characterized in that, The pipe body connecting components include a rubber sealing ring (4) and a rubber sealing ring (5) that are sleeved on the pipe body (3); the rubber sealing ring (4) is sleeved on the front end face I (e) of the pipe body (3), and its outer ring wall is provided with a sealing lip (41) for contacting the inner cavity (1a) of the embedded part (1); the rubber sealing ring (5) is sleeved on the end where the pipe body (3) and the outer arc edge (11) of the embedded part (1) are connected, and is used for secondary sealing of the inner ring wall (1c) of the pipe body (3) and the embedded part (1).

8. The embedded part for the reserved hole of the precast concrete inspection well according to claim 7, characterized in that, The cross-sectional shape of the rubber sealing ring (5) is a trapezoidal cone shape that is narrow at the front and wide at the back.

9. The embedded part for the reserved hole of the precast concrete inspection well according to claim 7, characterized in that, The shape of the front end face II (f) of the rubber sealing ring (4) is consistent with the shape of the inner surface (d) of the inner arc edge (12) of the embedded part (1).

10. The embedded part for the reserved hole of the precast concrete inspection well according to claim 7, characterized in that, The front end face II (f) of the rubber sealing ring (4) is provided with a buffer part (4b); the shape of the front end face III of the buffer part (4b) is consistent with the inner surface (d) of the inner arc edge (12) of the embedded part (1) and abuts against the inner surface (d) of the inner arc edge (12) of the embedded part (1).

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