A connecting construction device for a prefabricated inspection well and a pipeline
By installing a snap-fit device and a compression rod at the connection between the inspection well and the pipeline, the leakage risks and stability problems of the traditional connection between the inspection well and the pipeline are solved, thereby improving the sealing performance and construction efficiency.
Patent Information
- Application Number
- CN202521769801.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-20
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-20
AI Technical Summary
Traditional manholes and pipe connections have the potential for leakage, long construction periods, and insufficient structural stability. They are also prone to loosening when the soil deforms, leading to decreased sealing or detachment.
A prefabricated manhole and pipeline connection construction device is adopted. By setting up a snap-fit device and a compression rod, the pipeline and manhole are ensured to be tightly connected. The snap-fit component enables easy connection and disassembly, and enhances the sealing performance.
It improves the sealing between the pipe and the inspection well, reduces the possibility of decreased sealing or separation due to slight rotation or loosening, and simplifies the connection and disassembly process.
Smart Images

Figure CN224678833U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of manhole and pipeline connection, specifically, it relates to a construction device for connecting prefabricated manholes and pipelines. Background Technology
[0002] As a crucial component of urban infrastructure, the construction progress and quality of municipal water supply and drainage systems directly impact urban drainage functions, traffic safety, and residents' quality of life. Water supply and drainage inspection wells, as key nodes in the water supply and drainage pipeline system, undertake important functions such as pipeline connection, dredging and maintenance, and flow regulation. Traditional inspection well construction suffers from quality problems such as significant leakage risks, long construction periods, and insufficient structural stability. Leakage in inspection wells can lead to soil erosion in the roadbed, resulting in loose, water-rich, and cavitary conditions, which, if accumulated to a certain extent, can cause road collapse.
[0003] When the end of the pipe is inserted into the side wall of the well chamber and cement mortar is applied to seal the gap between the pipe and the well chamber, geological subsidence or other soil deformation phenomena can cause slight rotation or loosening between the pipe and the well body. This can lead to a decrease in the sealing performance between the pipe and the well body, making it easy for fluid inside the pipe to leak. Moreover, once the connection between the pipe and the well body rotates or loosens, the gap between the two will become larger, or even cause them to separate.
[0004] In view of this, this utility model is proposed. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a construction device for connecting prefabricated inspection wells and pipelines, thereby solving the problems mentioned in the background art.
[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:
[0007] A construction device for connecting a prefabricated manhole and a pipeline includes: a manhole and a pipeline, wherein the manhole has an interface and one end of the pipeline is fixedly connected to a docking seat corresponding to the interface;
[0008] The docking seat has multiple inner cavities, and an L-shaped block is elastically fitted inside each inner cavity. A snap-fit device that mates with the interface is rotatably fitted on the L-shaped block. Multiple pressure rods are provided around the docking seat, and the pressure rods are slidably fitted on one side of the snap-fit device. Multiple extrusion rods that mate with the L-shaped block are provided around the docking seat. Snap-fit components are provided between each of the multiple pressure rods and the multiple extrusion rods.
[0009] Optionally, a plurality of locking blocks are provided on one side of the interface, and the locking device includes a rotating rod. One end of the rotating rod is provided with a locking block that engages with the locking blocks. The rotating rod is rotatably fitted onto the L-shaped block, and a spring is fixedly connected between the rotating rod and the L-shaped block.
[0010] Optionally, the interface has multiple slots on one side, the card block is fixedly connected to one side of the slots, and both the card block and the card block have inclined surfaces on one side, with the two inclined surfaces cooperating with each other.
[0011] Optionally, a through hole is provided on one side of the inner cavity to cooperate with the extrusion rod, and a groove is provided on one side of the through hole. The snap-fit assembly includes a movable block. A fixing groove is provided on one side of the extrusion rod to cooperate with the movable block. An extrusion groove is provided on one side of the movable block. An L-shaped rod is provided on one side of the pressure rod to cooperate with the groove. The movable block is elastically fitted in the groove.
[0012] Optionally, the L-shaped block has a slanted groove on one side, and the extrusion rod has a chamfer at one end that matches the slanted groove.
[0013] Optionally, a dovetail groove is provided on one side of the rotating rod, and a protrusion that mates with the dovetail groove is provided at one end of the pressure rod. Sealing rings are provided on the opposite sides of the interface and the docking seat.
[0014] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:
[0015] The snap-fit device allows the pipe to connect to the manhole when the docking seat is inserted into the manhole interface. The compression rod, after the pipe is connected to the manhole, compresses the L-shaped block, making the connection between the docking seat and the interface tighter and improving the sealing between the pipe and the manhole. This reduces the possibility of slight rotation or loosening between the pipe and the manhole causing a decrease in sealing or separation. The snap-fit assembly allows the tightly connected pipe to be disconnected from the manhole.
[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0017] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:
[0018] Figure 1 This is a schematic diagram of the connection structure between the inspection well and the pipeline;
[0019] Figure 2 This is a schematic diagram of the docking seat structure;
[0020] Figure 3 for Figure 2 Schematic diagram of the structure at point A in the middle;
[0021] Figure 4 for Figure 2 Schematic diagram of the structure at point B.
[0022] The attached diagram lists the components represented by each number as follows:
[0023] Inspection well 1, interface 2, docking seat 3, pipe 4, pressure rod 5, extrusion rod 6, rotating rod 7, locking block 8, locking groove 9, L-shaped block 10, inner cavity 11, spring 12, inclined groove 13, L-shaped rod 14, groove 15, moving block 16, fixing groove 17, extrusion groove 18, sealing ring 19, dovetail groove 20, protrusion 21, locking block 22, locking device 23, locking assembly 24, through hole 25.
[0024] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation
[0025] The present invention will now be described in further detail with reference to the accompanying drawings.
[0026] Please see Figure 1-4 As shown, this embodiment provides a construction device for connecting a prefabricated manhole and a pipeline, including: a manhole 1 and a pipeline 4. The manhole 1 is provided with an interface 2, and one end of the pipeline 4 is fixedly connected to a docking seat 3 corresponding to the interface 2.
[0027] The docking seat 3 has multiple inner cavities 11, and an L-shaped block 10 is elastically fitted inside the inner cavity 11. A snap-fit device 23 that mates with the interface 2 is rotatably fitted on the L-shaped block 10. Multiple pressure rods 5 are arranged around the docking seat 3. The pressure rods 5 are slidably fitted on one side of the snap-fit device 23. Multiple extrusion rods 6 that mate with the L-shaped block 10 are arranged around the docking seat 3. A snap-fit assembly 24 is provided between each of the multiple pressure rods 5 and the multiple extrusion rods 6.
[0028] With the snap-fit device 23, when the docking seat 3 is inserted into the interface 2 of the inspection well 1, the pipe 4 can be connected to the inspection well 1. With the squeeze rod 6, after the pipe 4 is connected to the inspection well 1, the squeeze rod 6 squeezes the L-shaped block 10, which can make the connection between the docking seat 3 and the interface 2 tighter, improve the sealing between the pipe 4 and the inspection well 1, thereby reducing the possibility of slight rotation or loosening between the pipe 4 and the inspection well 1, which could lead to a decrease in sealing or separation. With the snap-fit component 24, the tightly connected pipe 4 can be disconnected from the inspection well 1.
[0029] like Figure 2-3 As shown, in this embodiment, a plurality of locking blocks 8 are provided on one side of the interface 2. The locking device 23 includes a rotating rod 7. One end of the rotating rod 7 is provided with a locking block 22 that engages with the locking block 8. The rotating rod 7 is rotatably fitted on the L-shaped block 10, and a spring 12 is fixedly connected between the rotating rod 7 and the L-shaped block 10. A plurality of locking slots 9 are opened on one side of the interface 2. The locking block 8 is fixedly connected to one side of the locking slot 9. Both the locking block 22 and the locking block 8 have inclined surfaces on one side, and the two inclined surfaces cooperate with each other.
[0030] When it is necessary to connect the pipe 4 to the manhole 1, when the docking seat 3 is inserted into the interface 2 of the manhole 1, the docking seat 3 moves and drives the rotating rod 7 to rotate. The rotation of the rotating rod 7 causes the inclined surface of the locking block 22 to press against the inclined surface of the locking block 8 and lock against each other, thereby connecting the pipe 4 to the manhole 1.
[0031] When it is necessary to disconnect the connection between the pipe 4 and the manhole 1, the locking block 22 and the locking block 8 are disengaged by pulling the rotating rod 7 outward. At this time, the spring 12 is stretched. As the rotating rod 7 drives the locking block 22 to rotate, the locking block 22 completely disengages from the locking groove 9, thereby realizing the separation between the pipe 4 and the manhole 1. The operation is simple.
[0032] As shown in 3-4, in this embodiment, a through hole 25 is provided on one side of the inner cavity 11 to cooperate with the extrusion rod 6, and a groove 15 is provided on one side of the through hole 25. The snap-fit assembly 24 includes a moving block 16. A fixing groove 17 is provided on one side of the extrusion rod 6 to cooperate with the moving block 16, and an extrusion groove 18 is provided on one side of the moving block 16. An L-shaped rod 14 is provided on one side of the pressure rod 5 to cooperate with the groove 15. The moving block 16 is elastically fitted in the groove 15.
[0033] By using the set snap-fit assembly 24, the pressing rod 5 moves, the pressing rod 5 moves, driving the L-shaped rod 14 to move, the L-shaped rod 14 moves, squeezing the squeezing groove 18, driving the moving block 16 to move, the moving block 16 moves, releasing the snap-fit with the fixed groove 17, the pressing rod 5 moves, driving the rotating rod 7 to rotate, the rotating rod 7 rotates, driving the snap-fit block 22 to release the snap-fit with the snap-fit block 8, thereby disassembling the pipe 4 and the inspection well 1.
[0034] like Figure 3As shown, in this embodiment, the L-shaped block 10 has a groove 13 on one side, and the extrusion rod 6 has a chamfer at one end that matches the groove 13.
[0035] The pressing and squeezing rod 6 moves, and the inclined surface of the squeezing rod 6 and the inclined surface of the inclined groove 13 squeeze each other, causing the L-shaped block 10 to move. The movement of the L-shaped block 10 causes the rotating rod 7 to move, and the movement of the rotating rod 7 causes the docking seat 3 to fit tightly with the interface 2, which improves the sealing between the pipe 4 and the inspection well 1, thereby reducing the possibility of slight rotation or loosening between the pipe 4 and the inspection well 1, which could lead to a decrease in sealing or separation.
[0036] like Figure 2 As shown, in this embodiment, a dovetail groove 20 is provided on one side of the rotating rod 7, and a protrusion 21 that cooperates with the dovetail groove 20 is provided at one end of the pressure rod 5. Sealing rings 19 are provided on the opposite sides of the interface 2 and the docking seat 3. The dovetail groove 20 allows the rotating rod 7 to move without causing the pressure rod 5 to move. The sealing rings 19 improve the sealing between the pipe 4 and the interface 2.
[0037] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.
Claims
1. A construction device for connecting prefabricated inspection wells and pipelines, characterized in that, include: Inspection well (1) and pipe (4), the inspection well (1) is provided with an interface (2), and one end of the pipe (4) is fixedly connected with a docking seat (3) corresponding to the interface (2); The docking seat (3) has multiple inner cavities (11) and an L-shaped block (10) is elastically fitted inside the inner cavity (11). A snap-fit device (23) that cooperates with the interface (2) is rotatably fitted on the L-shaped block (10). Multiple pressure rods (5) are provided around the docking seat (3). The pressure rods (5) are slidably fitted on one side of the snap-fit device (23). Multiple extrusion rods (6) that cooperate with the L-shaped block (10) are provided around the docking seat (3). A snap-fit assembly (24) is provided between each of the multiple pressure rods (5) and the multiple extrusion rods (6).
2. The prefabricated inspection well and pipeline connection construction device according to claim 1, characterized in that, The interface (2) is provided with a plurality of locking blocks (8) on one side. The locking device (23) includes a rotating rod (7). One end of the rotating rod (7) is provided with a locking block (22) that locks into the locking block (8). The rotating rod (7) is rotatably fitted onto the L-shaped block (10), and a spring (12) is fixedly connected between the rotating rod (7) and the L-shaped block (10).
3. The construction device for connecting a prefabricated inspection well and a pipeline according to claim 2, characterized in that, The interface (2) has multiple slots (9) on one side, and the card block (8) is fixedly connected to one side of the slot (9). The card block (22) and the card block (8) both have inclined surfaces on one side, and the two inclined surfaces cooperate with each other.
4. The construction device for connecting a prefabricated inspection well and a pipeline according to claim 3, characterized in that, The inner cavity (11) has a through hole (25) on one side that cooperates with the extrusion rod (6), and a groove (15) is provided on one side of the through hole (25). The snap-fit assembly (24) includes a moving block (16). The extrusion rod (6) has a fixing groove (17) on one side that cooperates with the moving block (16). The moving block (16) has an extrusion groove (18) on one side. The pressure rod (5) has an L-shaped rod (14) on one side that cooperates with the groove (15). The moving block (16) is elastically fitted in the groove (15).
5. The construction device for connecting a prefabricated inspection well and a pipeline according to claim 4, characterized in that, The L-shaped block (10) has a groove (13) on one side, and the extrusion rod (6) has a chamfer at one end that matches the groove (13).
6. The prefabricated inspection well and pipeline connection construction device according to claim 5, characterized in that, The rotating rod (7) has a dovetail groove (20) on one side, and the pressure rod (5) has a protrusion (21) that cooperates with the dovetail groove (20) at one end. The interface (2) and the docking seat (3) are both provided with sealing rings (19) on opposite sides.