Prefabricated concrete inspection well and outer wall special-shaped plastic pipe connecting structure and construction method

Abstract

The invention discloses a prefabricated concrete inspection well and outer wall special-shaped plastic pipe connecting structure and a construction method, relates to the technical field of concrete inspection well pipeline connection, and solves the problems that a common plastic pipe and concrete well connecting structure cannot be well used for connection of a special-shaped plastic pipe and a concrete well, all gaps are not prone to being filled with concrete materials, and the construction cost is low. The concrete inspection well comprises a concrete inspection well body, a reserved connecting hole formed in the surface of the concrete inspection well body, and a pouring assembly arranged in the concrete inspection well body. The inspection well connecting piece and the plastic pipe sealing compensation assembly are additionally arranged between the special-shaped plastic pipe body and the concrete inspection well body, and the special-shaped plastic pipe body is stably connected through the plastic pipe sealing compensation assembly; and the plastic pipe sealing compensation assembly is connected through the inspection well connecting piece, so that the concrete inspection well body can be connected with the special-shaped plastic pipe body in any shape, and the use is more convenient.

Description

Technical Field

[0001] This invention relates to the field of concrete inspection well pipe connection, and in particular to the connection structure and construction method of precast concrete inspection well and external irregular plastic pipe. Background Technology

[0002] Concrete inspection wells are manufactured from materials such as concrete, mortar, bricks, and gravel in accordance with relevant regulations, and are mainly used for various inspection operations of urban underground infrastructure.

[0003] Chinese invention patent (publication number: CN217053673U) discloses a connection structure for plastic pipes and precast concrete manholes, including a sealing ring and a template. The sealing ring is fitted onto the outer wall of the plastic pipe near the precast manhole end. The template is detachably installed at pre-drilled holes on the inner and outer walls of the precast manhole. A grouting hole is provided on the template on the inner wall of the precast manhole, corresponding to the position between the outer wall of the plastic pipe and the inner wall of the pre-drilled hole. By setting the template at the pre-drilled holes on the inner and outer walls of the precast manhole and providing grouting holes, the gap between the outer wall of the plastic pipe and the inner wall of the pre-drilled hole can be easily filled with concrete and solidified, achieving connection between the plastic pipe and the precast manhole. Combined with the sealing ring on the outer wall of the plastic pipe, it provides a good sealing effect, preventing leakage. Furthermore, the template is easy to set up, and the grouting equipment can directly inject concrete, resulting in high efficiency, saving time and labor. The structure is simple and construction is convenient.

[0004] In the process of realizing this invention, the inventors discovered at least the following problems in the technology: When using the above-mentioned connection structure between the plastic pipe and the precast concrete manhole, in order to solve the problem of difficulty in sealing the connection between the plastic pipe and the concrete manhole, a sealing ring is set on the plastic pipe to improve the sealing effect. However, this structure is more suitable for ordinary plastic pipes. Once the construction party needs to install irregular plastic pipe fittings on the concrete manhole, such as plastic pipes with external support ribs or corrugated pipes, when the gap between the plastic pipe and the concrete manhole is filled with concrete material, the concrete material is not easy to fill all the gaps, which can easily lead to loose sealing and thus affect the sealing effect at the connection between the plastic pipe and the concrete manhole. Therefore, a connection structure and construction method for precast concrete manholes and irregular plastic pipes on the outer wall are proposed. Summary of the Invention

[0005] To address the problem that ordinary plastic pipe connection structures cannot be effectively used for connecting irregularly shaped plastic pipes to concrete wells, and that concrete material is not easily able to fill all the gaps, thus affecting the sealing effect at the connection between the plastic pipe and the concrete well, this invention provides a connection structure and construction method for precast concrete inspection wells and their external irregularly shaped plastic pipes.

[0006] This invention provides a connection structure and construction method for precast concrete inspection wells and their outer shaped plastic pipes, employing the following technical solution: A precast concrete inspection well connection structure with an external shaped plastic pipe includes a concrete inspection well body, a reserved connection hole on the surface of the concrete inspection well body, and a grouting assembly installed inside the concrete inspection well body. An inspection well connector is installed inside the reserved connection hole. A sealing ring 1 is provided on one side of the connection between the inspection well connector and the grouting assembly, and a sealing ring 2 is provided on the other side of the connection between the inspection well connector and the grouting assembly. A plastic pipe sealing compensation assembly is installed inside the inspection well connector, and a shaped plastic pipe body is installed inside the plastic pipe sealing compensation assembly. Two sets of connector grouting holes are opened at the top of the inspection well connector. The plastic pipe sealing compensation assembly includes a compensation sleeve that fits into the inner wall of the manhole connector. The compensation sleeve has a waterproof protective membrane inside, and the top of the waterproof protective membrane has an upper waterproof membrane rib, and the bottom of the waterproof protective membrane has a lower waterproof membrane rib. Several insert rods that are radially distributed along the axial direction of the compensation sleeve are provided between the lower waterproof membrane rib and the compensation sleeve.

[0007] Preferably, the plastic tube sealing compensation assembly further includes an inner adhesive membrane disposed below the lower rib of the waterproof membrane, wherein the inner adhesive membrane and the lower rib of the waterproof membrane are filled with fixing adhesive, and a supporting rubber ring is disposed on the outside of the inner adhesive membrane and the lower rib of the waterproof membrane.

[0008] Preferably, an indicator ring is fixed to the top of one set of the inserts, and a fixing member is provided at the bottom of the insert with the indicator ring. A rubber head is provided below the fixing member, and a puncture needle for piercing the inner membrane of the glue is fixed below the rubber head. The tip of the puncture needle points vertically to the inner membrane of the glue.

[0009] Preferably, the supporting rubber band is a ring structure, and the diameter of the supporting rubber band is the same as the distance between the inner adhesive membrane and the lower rib of the waterproof membrane.

[0010] Preferably, the grouting assembly includes a concrete grouting chamber located inside the concrete inspection well body. A pressure block is installed inside the concrete grouting chamber, and a guide sleeve and a telescopic rod fitted inside the guide sleeve are provided at the connection between the pressure block and the concrete grouting chamber. One end of the telescopic rod is provided with a sealing plate that is slidably connected to the guide sleeve.

[0011] Preferably, one end of the telescopic rod is fixedly connected to the pressure block, one end of the guide sleeve is fixedly connected to the concrete pouring chamber, and the telescopic rod slides inside the guide sleeve through the sealing plate.

[0012] Preferably, the grouting assembly further includes a manhole grouting hole opened inside the concrete grouting chamber, the manhole grouting hole being used to grout concrete into the concrete grouting chamber.

[0013] Preferably, the first sealing ring and the second sealing ring are symmetrically arranged about the vertical center line of the reserved connection hole, and both the first sealing ring and the second sealing ring are embedded inside the reserved connection hole.

[0014] Preferably, the inner diameters of the first and second sealing rings are matched with the outer diameter of the manhole connector, and the injection hole of the connector is used to inject concrete between the manhole connector and the compensation sleeve and the shaped plastic pipe body.

[0015] The construction method for connecting any of the above-mentioned precast concrete inspection wells to the external irregular-shaped plastic pipe includes the following steps: S1. After putting the sealing ring on the manhole connector, it is inserted into the reserved hole. Then, the second sealing ring is put on the exposed end of the manhole connector and is also inserted into the reserved hole. S2. Concrete is injected into the space between sealing ring one, sealing ring two and the reserved connection hole through the injection component to strengthen the connection between the manhole connector and the concrete manhole body. S3. Install the plastic pipe sealing compensation component on the irregular plastic pipe body, and insert the plastic pipe sealing compensation component into the manhole connector; S4. Pour concrete through the injection hole of the connector into the gaps between the manhole connector, the plastic pipe sealing compensation component, and the irregular plastic pipe body to improve its sealing effect.

[0016] In summary, the present invention has the following beneficial effects: 1. The present invention, through the plastic tube sealing compensation component, can push the inner glue membrane inward to tightly adhere to the outer wall of the irregular plastic tube under the action of the insertion rod, until the puncture needle pierces the inner glue membrane, and the internal fixing glue flows out, thereby achieving complete adhesion of the waterproof protective membrane to the outer wall of the irregular plastic tube, so that the irregular plastic tube body and the compensation sleeve are completely sealed, and it can be applied to the compensation and sealing work of plastic tube bodies of different shapes; 2. This invention, by setting up a grouting component inside the concrete inspection well, applies force to the pressure block through grouting concrete, which can compress sealing ring one and sealing ring two, making the connection between sealing ring one and sealing ring two more tighter with the inspection well connecting parts. The setting of sealing ring one and sealing ring two can also seal the reserved hole and the inspection well connecting parts in the opposite direction, thereby improving the sealing effect between the inspection well connecting parts and the concrete inspection well body. 3. This invention improves the existing construction method by adding a manhole connector and a plastic pipe sealing compensation component between the irregular plastic pipe body and the concrete manhole body. The irregular plastic pipe body is stably connected by the plastic pipe sealing compensation component, and the plastic pipe sealing compensation component is connected by the manhole connector, which allows the concrete manhole body to be connected to the irregular plastic pipe body of any shape, making it more convenient to use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0018] Figure 2 This is a schematic cross-sectional view of the present invention.

[0019] Figure 3 This is the present invention. Figure 2 A magnified structural diagram at point A in the diagram.

[0020] Figure 4 This is a schematic diagram of the structure of the inspection well connector and the plastic pipe sealing compensation component when separated.

[0021] Figure 5 This is a cross-sectional structural diagram of the plastic pipe sealing compensation component of the present invention.

[0022] Figure 6 This is the present invention. Figure 5 A magnified structural diagram at point B in the diagram.

[0023] Explanation of reference numerals in the attached figures: 1. Concrete manhole body; 2. Pre-drilled connection hole; 3. Sealing ring one; 4. Manhole connector; 5. Plastic pipe sealing compensation assembly; 501. Compensation sleeve; 502. Waterproof membrane upper reinforcement; 503. Fixing adhesive; 504. Adhesive inner membrane; 505. Insert rod; 506. Indicator ring; 507. Waterproof protective membrane; 508. Supporting rubber ring; 509. Waterproof membrane lower reinforcement; 510. Puncture needle; 511. Rubber head; 512. Fixing component; 6. Irregularly shaped plastic pipe body; 7. Grouting assembly; 701. Concrete grouting chamber; 702. Manhole grouting hole; 703. Guide sleeve; 704. Sealing plate; 705. Telescopic rod; 706. Pressure block; 8. Sealing ring two; 9. Connector grouting hole. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] As attached Figures 1-3 As shown, the present invention provides a technical solution: a connection structure between a precast concrete inspection well and an outer wall shaped plastic pipe, including a concrete inspection well body 1, a reserved connection hole 2 opened on the surface of the concrete inspection well body 1, and a grouting component 7 disposed inside the concrete inspection well body 1. An inspection well connector 4 is inserted inside the reserved connection hole 2. A sealing ring 3 is provided on one side of the connection between the inspection well connector 4 and the grouting component 7, and a sealing ring 8 is provided on the other side of the connection between the inspection well connector 4 and the grouting component 7. The sealing ring 3 and the sealing ring 8 are symmetrically arranged about the vertical center line of the reserved connection hole 2, and both the sealing ring 3 and the sealing ring 8 are embedded inside the reserved connection hole 2. The inner diameters of the sealing ring 3 and the sealing ring 8 are matched with the outer diameter of the inspection well connector 4. After the sealing ring 3 is fitted onto the inspection well connector 4, it is inserted into the reserved connection hole 2. The sealing ring 8 is fitted onto the exposed end of the inspection well connector 4, and the sealing ring 8 is also inserted into the reserved connection hole 2.

[0026] Secondly, a plastic pipe sealing compensation component 5 is installed inside the manhole connector 4, and a shaped plastic pipe body 6 is inserted inside the plastic pipe sealing compensation component 5. Two sets of connector injection holes 9 are opened at the top of the manhole connector 4, and the connector injection holes 9 at the top of the manhole connector 4 are located inside the second sealing ring 8 and outside the first sealing ring 3, respectively. The connector injection holes 9 are used to inject concrete between the manhole connector 4, the plastic pipe sealing compensation component 5 and the shaped plastic pipe body 6. After the plastic pipe sealing compensation component 5 is inserted into the manhole connector 4, part of the end of the shaped plastic pipe body 6 is left inside the concrete manhole body 1. The end of the shaped plastic pipe body 6 is ground, and concrete mortar is injected into the gap between the manhole connector 4, the plastic pipe sealing compensation component 5 and the shaped plastic pipe body 6 through the connector injection holes 9 to improve its sealing effect.

[0027] like Figure 2 , Figure 3 and Figure 5As shown, in a preferred embodiment, based on the above method, the plastic pipe sealing compensation assembly 5 further includes a compensation sleeve 501 that fits against the inner wall of the inspection well connector 4. A waterproof protective membrane 507 is provided inside the compensation sleeve 501, and a waterproof membrane upper rib 502 is provided at the top of the waterproof protective membrane 507, and a waterproof membrane lower rib 509 is provided at the bottom of the waterproof protective membrane 507. A plurality of insert rods 505 radially distributed along the axial direction of the compensation sleeve 501 are provided between the waterproof membrane lower rib 509 and the compensation sleeve 501. The plastic pipe sealing compensation assembly 5 also includes an adhesive inner membrane 504 provided below the waterproof membrane lower rib 509. After the plastic pipe sealing compensation assembly 5 is installed on the irregular plastic pipe body 6 and the compensation sleeve 501 is put on, a plurality of insert rods 505 are pushed inward in sequence. The insert rods 505 drive the adhesive inner membrane 504 to fit tightly against the outer wall of the irregular plastic pipe body 6. At this time, the shape of the adhesive inner membrane 504 is completely consistent with the shape of the irregular plastic pipe body 6.

[0028] Secondly, since the inner adhesive membrane 504 and the lower rib of the waterproof membrane 509 are filled with fixing adhesive 503, and the outer side of the inner adhesive membrane 504 and the lower rib of the waterproof membrane 509 is provided with a supporting rubber ring 508, the fixing adhesive 503 inside the inner adhesive membrane 504 can flow out and bond the irregular plastic tube body 6.

[0029] Meanwhile, an indicator ring 506 is fixed to the top of one set of insertion rods 505, and a fixing member 512 is provided at the bottom of the insertion rod 505 with the indicator ring 506 fixed. A rubber head 511 is provided below the fixing member 512, and a puncture needle 510 for piercing the inner glue film 504 is fixed below the rubber head 511. The tip of the puncture needle 510 points vertically towards the inner glue film 504. The supporting rubber ring 508 is a ring structure, and the diameter of the supporting rubber ring 508 is the same as that of the inner glue film 504 and the waterproof The distance between the sub-membrane ribs 509 is the same. Press down on the insert rod 505 with the indicator ring 506 to make the puncture needle 510 pierce the fixing glue 503 inside the glue inner membrane 504 and flow out. Push the insert rod 505 again until the bottom of the insert rod 505 drives the waterproof sub-membrane ribs 509 to completely adhere to the irregular plastic tube body 6. The space between the irregular plastic tube body 6 and the compensation sleeve 501 is blocked by the waterproof protective membrane 507, so that the irregular plastic tube body 6 and the compensation sleeve 501 are sealed.

[0030] like Figure 2 and Figure 4As shown, in a preferred embodiment, based on the above method, the grouting assembly 7 further includes a concrete grouting chamber 701 opened inside the concrete inspection well body 1. A pressure block 706 is installed inside the concrete grouting chamber 701, and a guide sleeve 703 and a telescopic rod 705 fitted inside the guide sleeve 703 are provided at the connection between the pressure block 706 and the concrete grouting chamber 701. One end of the telescopic rod 705 is provided with a sealing plate 704 that is slidably connected to the guide sleeve 703. One end of the telescopic rod 705 is fixedly connected to the pressure block 706, and one end of the guide sleeve 703 is fixedly connected to the concrete grouting chamber 701. The grouting assembly 7 also includes a manhole grouting hole 702 opened inside the concrete grouting chamber 701, which is slidable within the guide sleeve 703 via the sealing plate 704. The manhole grouting hole 702 is used to grout concrete into the concrete grouting chamber 701. After the concrete mortar flows into the concrete grouting chamber 701 through the manhole grouting hole 702, it fills the entire concrete grouting chamber 701, thereby allowing the pressure block 706 to move towards the sealing ring 1 3 and sealing ring 2 8. While pressing the sealing ring 1 3 and sealing ring 2 8, the telescopic rod 705 drives the sealing plate 704 to slide within the guide sleeve 703 until the concrete mortar fills the entire reserved joint hole 2.

[0031] like Figure 1 and Figure 2 As shown, the construction method for connecting any of the above-mentioned precast concrete inspection wells with the external irregular-shaped plastic pipe includes the following steps: S1. After the sealing ring 3 is put on the inspection well connector 4, it is inserted into the reserved connection hole 2. The sealing ring 8 is put on the exposed end of the inspection well connector 4, and the sealing ring 8 is also inserted into the reserved connection hole 2. S2. Concrete is injected into the space between sealing ring 1 3, sealing ring 2 8 and reserved connection hole 2 through injection component 7 to strengthen the connection between inspection well connector 4 and concrete inspection well body 1. S3. Install the plastic pipe sealing compensation component 5 on the irregular plastic pipe body 6, and insert the plastic pipe sealing compensation component 5 into the inspection well connector 4. S4. Concrete is poured through the injection hole 9 of the connector into the gap between the manhole connector 4, the plastic pipe sealing compensation component 5 and the irregular plastic pipe body 6 to improve its sealing effect.

[0032] In summary: This invention addresses the technical problem of existing connection structures between plastic pipes and precast concrete manholes. To solve the problem of difficulty in sealing the connection between the plastic pipe and the reinforced concrete manhole, a sealing ring is installed on the plastic pipe to improve the sealing effect. However, this structure is more suitable for ordinary plastic pipes. If the construction party needs to install irregularly shaped plastic pipes on the concrete manhole, such as plastic pipes with external support ribs or corrugated pipes, the concrete filling between the plastic pipe and the concrete manhole may not completely fill all gaps, leading to a loose seal and affecting the sealing effect at the connection between the plastic pipe and the concrete manhole. The invention employs the technical solutions described in the above embodiments. Furthermore, the implementation process of the above technical solutions is as follows: After sealing ring 3 is fitted onto manhole connector 4, it is inserted into the pre-drilled hole 2. Sealing ring 2 8 is then fitted onto the exposed end of manhole connector 4, also fitting into the pre-drilled hole 2. The grouting holes 9 on the top of manhole connector 4 are located inside sealing ring 2 8 and outside sealing ring 3, respectively, facilitating the injection of concrete into the gaps between manhole connector 4, plastic pipe sealing compensation component 5, and the shaped plastic pipe body 6 through the grouting holes 9. Concrete mortar flows into the manhole through grouting hole 702. After the concrete pouring chamber 701 is filled, the entire concrete pouring chamber 701 is filled, allowing the pressure block 706 to move towards the sealing ring 3 and sealing ring 8. While pressing the sealing ring 3 and sealing ring 8, the telescopic rod 705 drives the sealing plate 704 to slide within the guide sleeve 703 until the concrete mortar fills the entire reserved joint hole 2, strengthening the connection between the inspection well connector 4 and the concrete inspection well body 1; after installing the plastic pipe sealing compensation component 5 on the irregular plastic pipe body 6 and fitting the compensation sleeve 501, the... Several insert rods 505 are pushed sequentially inside, causing the inner adhesive membrane 504 to adhere tightly to the outer wall of the shaped plastic tube body 6. At this point, the shape of the inner adhesive membrane 504 is completely consistent with the shape of the shaped plastic tube body 6. The insert rods 505 with indicator rings 506 are pressed down, causing the puncture needle 510 to pierce the fixing adhesive 503 inside the inner adhesive membrane 504 and flow out. The insert rods 505 are pushed again until the bottom of the insert rods 505 drives the lower rib of the waterproof membrane 509 to completely adhere to the shaped plastic tube body 6. The shaped plastic tube body 6 and the compensation sleeve are then connected. The space between the cylinders 501 is shielded by a waterproof protective membrane 507, which seals the shaped plastic pipe body 6 with the compensation sleeve 501. After the plastic pipe sealing compensation component 5 is inserted into the manhole connector 4, a portion of the end of the shaped plastic pipe body 6 remains inside the concrete manhole body 1. The end of the shaped plastic pipe body 6 is ground, and concrete mortar is injected through the injection hole 9 of the connector into the gap between the manhole connector 4, the plastic pipe sealing compensation component 5, and the shaped plastic pipe body 6 to improve the sealing effect. With the above-mentioned settings, this application will certainly solve the above-mentioned technical problems, and at the same time achieve the following technical effects: The present invention, through the plastic tube sealing compensation component 5, under the action of the insertion rod 505, can push the inner glue membrane 504 inward to tightly adhere to the outer wall of the irregular plastic tube body 6 until the puncture needle 510 pierces the inner glue membrane 504, and the internal fixing glue 503 flows out, thereby achieving that the waterproof protective membrane 507 completely adheres to the outer wall of the irregular plastic tube body 6, so that the irregular plastic tube body 6 and the compensation sleeve 501 are completely sealed, which can be applied to the compensation and sealing work of plastic tube bodies of different shapes; This invention provides a grouting component 7 inside the concrete inspection well body 1. By grouting concrete, a force is applied to the pressure block 706, which can compress the sealing ring 3 and the sealing ring 8, making the sealing ring 3 and the sealing ring 8 more tightly connected to the inspection well connector 4. The sealing ring 3 and the sealing ring 8 can also seal the reserved hole 2 and the inspection well connector 4 in the reverse direction, thereby improving the sealing effect between the inspection well connector 4 and the concrete inspection well body 1. This invention improves the existing construction method by adding a manhole connector 4 and a plastic pipe sealing compensation component 5 between the irregular plastic pipe body 6 and the concrete manhole body 1. The irregular plastic pipe body 6 is stably connected by the plastic pipe sealing compensation component 5, and the plastic pipe sealing compensation component 5 is connected by the manhole connector 4, which allows the concrete manhole body 1 to be connected to the irregular plastic pipe body 6 of any shape, making it more convenient to use.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connection structure between a precast concrete inspection well and an external shaped plastic pipe, comprising a concrete inspection well body (1), a reserved connection hole (2) opened on the surface of the concrete inspection well body (1), and a grouting assembly (7) disposed inside the concrete inspection well body (1), characterized in that: The pre-reserved connection hole (2) is provided with a manhole connector (4), a sealing ring (3) is provided on one side of the connection between the manhole connector (4) and the injection component (7), and a sealing ring (8) is provided on one side of the connection between the manhole connector (4) and the injection component (7). A plastic pipe sealing compensation component (5) is installed inside the manhole connector (4), and a special-shaped plastic pipe body (6) is provided inside the plastic pipe sealing compensation component (5). Two sets of connector injection holes (9) are opened on the top of the manhole connector (4). The plastic pipe sealing compensation assembly (5) includes a compensation sleeve (501) that fits against the inner wall of the inspection well connector (4). The compensation sleeve (501) is provided with a waterproof protective membrane (507) inside. The top of the waterproof protective membrane (507) is provided with a waterproof membrane upper rib (502), and the bottom of the waterproof protective membrane (507) is provided with a waterproof membrane lower rib (509). A plurality of insertion rods (505) radially distributed along the axial direction of the compensation sleeve (501) are provided between the waterproof membrane lower rib (509) and the compensation sleeve (501).

2. The connection structure between the precast concrete inspection well and the outer wall irregular plastic pipe according to claim 1, characterized in that: The plastic tube sealing compensation assembly (5) also includes an inner adhesive membrane (504) disposed below the lower rib of the waterproof membrane (509), wherein the inner adhesive membrane (504) and the lower rib of the waterproof membrane (509) are filled with fixing adhesive (503), and a supporting rubber ring (508) is disposed on the outside of the inner adhesive membrane (504) and the lower rib of the waterproof membrane (509).

3. The connection structure between the precast concrete inspection well and the outer wall irregular plastic pipe according to claim 2, characterized in that: One of the sets of inserts (505) has an indicator ring (506) fixed at the top end, and a fixing member (512) is provided at the bottom of the insert (505) with the indicator ring (506) fixed. A rubber head (511) is provided below the fixing member (512), and a puncture needle (510) for piercing the inner membrane of the glue (504) is fixed below the rubber head (511). The tip of the puncture needle (510) points vertically towards the inner membrane of the glue (504).

4. The connection structure between the precast concrete inspection well and the outer wall irregular plastic pipe according to claim 2, characterized in that: The supporting rubber ring (508) is a ring structure, and the diameter of the supporting rubber ring (508) is the same as the distance between the inner glue membrane (504) and the lower rib of the waterproof membrane (509).

5. The connection structure between the precast concrete inspection well and the outer wall irregular plastic pipe according to claim 1, characterized in that: The grouting assembly (7) includes a concrete grouting chamber (701) opened inside the concrete inspection well body (1). A pressure block (706) is installed inside the concrete grouting chamber (701), and a guide sleeve (703) and a telescopic rod (705) sleeved in the guide sleeve (703) are provided at the connection between the pressure block (706) and the concrete grouting chamber (701). One end of the telescopic rod (705) is provided with a sealing plate (704) that is slidably connected to the guide sleeve (703).

6. The connection structure between the precast concrete inspection well and the outer wall irregular plastic pipe according to claim 5, characterized in that: One end of the telescopic rod (705) is fixedly connected to the pressure block (706), and one end of the guide sleeve (703) is fixedly connected to the concrete pouring chamber (701). The telescopic rod (705) slides in the guide sleeve (703) through the sealing plate (704).

7. The connection structure between the precast concrete inspection well and the outer wall irregular plastic pipe according to claim 5, characterized in that: The grouting assembly (7) also includes a manhole grouting hole (702) opened inside the concrete grouting chamber (701), the manhole grouting hole (702) being used to grout concrete into the concrete grouting chamber (701).

8. The connection structure between the precast concrete inspection well and the outer wall irregular plastic pipe according to claim 1, characterized in that: The sealing ring one (3) and sealing ring two (8) are symmetrically arranged about the vertical center line of the reserved connection hole (2), and both sealing ring one (3) and sealing ring two (8) are embedded inside the reserved connection hole (2).

9. The connection structure between the precast concrete inspection well and the outer wall irregular plastic pipe according to claim 1, characterized in that: The inner diameters of the first sealing ring (3) and the second sealing ring (8) are both matched with the outer diameter of the manhole connector (4). The injection hole (9) of the connector is used to inject concrete between the manhole connector (4), the compensation sleeve (501), and the shaped plastic pipe body (6).

10. A construction method for the connection structure between a precast concrete inspection well and an external shaped plastic pipe according to any one of claims 1-9, comprising the following steps: S1. After putting the sealing ring one (3) on the inspection well connector (4), it is inserted into the reserved connection hole (2). The sealing ring two (8) is put on the exposed end of the inspection well connector (4). The sealing ring two (8) is also inserted into the reserved connection hole (2). S2. Concrete is injected between sealing ring 1 (3), sealing ring 2 (8) and reserved connection hole (2) through injection component (7) to strengthen the connection between inspection well connector (4) and concrete inspection well body (1). S3. Install the plastic pipe sealing compensation component (5) on the irregular plastic pipe body (6) and insert the plastic pipe sealing compensation component (5) into the inspection well connector (4); S4. Concrete is poured through the grouting hole (9) of the connector into the gap between the manhole connector (4), the plastic pipe sealing compensation component (5), and the irregular plastic pipe body (6) to improve its sealing effect.

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