Pipeline butt joint mold for drainage pipe well in modular building

Abstract

The utility model relates to the technical field of modular building pipeline butt joint, in particular to a pipeline butt joint mold for a drainage pipe well in a modular building. The device comprises a rotating bottom plate, a first connecting piece, a second connecting piece and two fixing assemblies, the two fixing assemblies are installed on the opposite sides of the inner wall of the drainage pipe well correspondingly, and the rotating bottom plate is detachably connected with the two fixing assemblies through the first connecting piece and the second connecting piece correspondingly. A plurality of pipe holes are formed in the rotating bottom plate, the plurality of pipe holes and the plurality of lower drainage pipes are in one-to-one correspondence and are coaxially arranged, and a connecting pipe group is arranged in each pipe hole; the upper drainage pipe and the lower drainage pipe are connected through the connection pipe set. Through the arrangement of the rotating bottom plate and the first connecting piece, even if the axis positions of the upper drainage pipe and the lower drainage pipe are relatively staggered, the upper drainage pipe and the lower drainage pipe can be in butt joint quickly and accurately, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of modular building pipeline connection technology, and in particular to a pipeline connection mold for drainage wells in modular buildings. Background Technology

[0002] With the development of prefabricated building technology, especially the application of modular integrated buildings, the era of prefabricated construction has arrived, often referred to as Prefabricated Building 4.0. This construction method can be widely applied to various building projects, including high-rise buildings and residential projects, hotels and resorts, education and healthcare, etc. As one of the key technologies in these projects, drainage manholes are seeing their application prospects expand further with the development of prefabricated building technology.

[0003] In existing technologies, drainage pipes are usually pre-embedded in the upper and lower floor slabs of modular buildings and placed in drainage pipe wells. Then, the drainage pipes of the upper floor slab and the drainage pipes of the lower floor slab are connected by connecting pipes to complete the connection of drainage pipes in modular buildings.

[0004] However, in modular buildings, drainage manholes typically only have pipe openings, and the drainage pipes of the lower floor slab are usually prefabricated simultaneously with the drainage manholes. The pipe openings of the drainage manholes are coaxial with the drainage pipes of the lower floor slab. When connecting drainage pipes, because the upper and lower floor slabs are spliced ​​together, the axes of the pre-embedded drainage pipes in the upper and lower floor slabs are prone to deviation. Due to the misalignment between the drainage pipes, it is easy for operators to not be able to clearly observe the axis position of the drainage pipes in the upper floor slab, making it difficult to connect the connecting pipes to the drainage pipes in the upper and lower floor slabs. This is inefficient for operators and makes the pipe connection operation more difficult. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides a pipe connection mold for drainage pipe wells in modular buildings, which solves the technical problem that the axis of the drainage pipes embedded in the upper and lower floor slabs of the current modular buildings is prone to deviation, making it impossible for operators to clearly observe the axis position of the drainage pipes in the upper floor slab. This makes it difficult to connect the connecting pipes to the drainage pipes in the upper and lower floor slabs, resulting in low connection efficiency and more difficult pipe connection operations.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solution adopted by this utility model includes:

[0009] This utility model provides a pipe connection mold for drainage manholes in modular buildings. The drainage manhole contains multiple upper drainage pipes and multiple lower drainage pipes. The pipe connection mold includes a rotating base plate, a first connector, a second connector, and two fixing components. The two fixing components are respectively installed on opposite sides of the inner wall of the drainage manhole. The rotating base plate is detachably connected to the two fixing components through the first connector and the second connector. The rotating base plate has multiple pipe holes, which correspond one-to-one with the multiple lower drainage pipes and are coaxially arranged. Each pipe hole contains a connecting pipe assembly. The upper drainage pipes and lower drainage pipes are connected through the connecting pipe assemblies.

[0010] Preferably, the outer walls of the rotating base plate can fit against the inner wall of the drainage manhole to seal the bottom of the drainage manhole.

[0011] Preferably, both the first and second connecting members are bolts; the rotating base plate is detachably connected to the bottom of the two fixed components by two of the bolts respectively.

[0012] Preferably, the first connecting member is a lifting mechanism; the second connecting member is a bolt; one end of the rotating base plate is connected to a fixed component through the lifting mechanism, the lifting mechanism can drive the rotating base plate to rise and fall vertically, and the rotating base plate is rotatably connected to the lifting mechanism; the lifting mechanism can drive the rotating base plate to rise and fall vertically, and the rotating base plate can rotate around the axis of the lifting mechanism.

[0013] Preferably, the lifting mechanism includes a lifting seat, a pull rod, and a limiting ring; the lifting seat is rotatably and vertically movable inside a fixed component, the limiting ring is installed inside the fixed component, the top of the pull rod is connected to the bottom of the lifting seat, the bottom of the pull rod passes through the limiting ring, the fixed component, and the rotating base plate, and the pull rod is rotatably connected to the rotating base plate; the pull rod and the lifting seat can drive the rotating base plate to descend vertically, and the rotating base plate can rotate around the axis of the pull rod.

[0014] Preferably, the lifting mechanism further includes an elastic element; the elastic element is sleeved on the outer wall of the pull rod, and the elastic element is located between the lifting seat and the limiting ring, for providing buffering force and rebound force for the lifting seat.

[0015] Preferably, the lifting mechanism further includes a pull ring, which is installed at the bottom of the pull rod.

[0016] Preferably, when the rotating base plate is in its initial position, the bottom wall of the rotating base plate and the bottom wall of the drainage pipe well are on the same plane; the thickness range and the vertical descent height range of the rotating base plate are both 150mm-500mm.

[0017] Preferably, the fixing assembly includes a fixing plate and a plurality of fixing bolts; the fixing plate is installed on one inner wall of the drainage pipe well by the plurality of fixing bolts, the fixing plate is provided with a lifting space, the lifting seat, the limiting ring and the elastic element are all placed in the lifting space, and the rotating base plate is connected to the two fixing plates by the second connecting member and the pull rod respectively.

[0018] Preferably, the connecting pipe assembly includes an eccentric pipe and a connecting pipe; the connecting pipe is located inside the pipe hole, and both ends of the eccentric pipe are connected to the corresponding upper drain pipe and the connecting pipe, respectively, and the other end of the connecting pipe is connected to the lower drain pipe.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this utility model are:

[0021] This utility model discloses a pipe connection mold for drainage manholes in modular buildings. By setting a rotating base plate and a first connecting piece, and with the rotating base plate detachably connected to two fixed components via the first and second connecting pieces, it allows for the removal of the first and second connecting pieces during pipe connection. This exposes the upper and lower drainage pipes, enabling observation and selection of appropriate connecting pipe assemblies for connection. Even if the axes of the upper and lower drainage pipes are misaligned, it allows for quick and accurate connection. This simplifies and speeds up the connection process in modular buildings, improving work efficiency. Simultaneously, it increases the pipe assembly rate and installation quality of drainage manholes in modular buildings, saving construction costs. Attached Figure Description

[0022] Figure 1 This is a three-dimensional perspective view of a pipe connection mold for drainage manholes in modular buildings according to the present invention.

[0023] Figure 2 This is a three-dimensional structural diagram of a pipe connection mold for drainage manholes in modular buildings, showing the connection between the upper and lower drainage pipes via a connecting pipe assembly.

[0024] Figure 3 This is a three-dimensional structural diagram of a pipe connection mold for drainage manholes in modular buildings according to the present invention.

[0025] Figure 4 This is a cross-sectional structural schematic diagram of a pipe connection mold for drainage manholes in modular buildings according to the present invention.

[0026] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point A in the middle;

[0027] Figure 6 This is a three-dimensional structural diagram of the rotating base plate of a pipe connection mold for drainage manholes in modular buildings, as shown in this utility model.

[0028] Figure 7 This is a top view of the rotating base plate of a pipe connection mold for drainage manholes in modular buildings, as shown in this utility model.

[0029] Figure 8 This is a front view of the first and second connectors during disassembly, representing another embodiment of a pipe connection mold for drainage manholes in modular buildings according to the present invention.

[0030] [Explanation of Labels in the Attached Image]

[0031] 1: Fixed component; 11: Fixed plate; 111: Lifting space; 12: Fixed bolt; 2: Rotating base plate; 21: Pipe hole; 3: First connecting piece; 31: Lifting mechanism; 311: Lifting seat; 312: Pull rod; 313: Limit ring; 314: Elastic element; 315: Pull ring; 4: Upper drain pipe; 5: Lower drain pipe; 6: Connecting pipe assembly; 61: Eccentric pipe; 62: Connecting pipe; 7: Drainage pipe well; 8: Second connecting piece. Detailed Implementation

[0032] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1

[0034] like Figures 1-7 As shown in the figure, this embodiment is a pipe connection mold for a drainage pipe well 7 in a modular building. The drainage pipe well 7 is provided with multiple upper drainage pipes 4 and multiple lower drainage pipes 5. The pipe connection mold includes a rotating base plate 2, a first connector 3 and a second connector 8 and two fixing components 1.

[0035] Specifically, two fixing components 1 are respectively installed on opposite sides of the inner wall of the drainage pipe well 7, and the rotating base plate 2 is detachably connected to the two fixing components 1 through the first connector 3 and the second connector 8. The rotating base plate 2 has multiple pipe holes 21, each corresponding to a multiple lower drainage pipe 5 and coaxially arranged. Each pipe hole 21 is equipped with a connecting pipe assembly 6. The upper drainage pipe 4 and the lower drainage pipe 5 are connected through the connecting pipe assembly 6. By setting a rotating base plate 2 and a first connecting piece 3, and by allowing the rotating base plate 2 to be detachably connected to two fixed components 1 via the first connecting piece 3 and the second connecting piece 8, it is possible to remove the second connecting piece 8 and the first connecting piece 3 during pipe connection, exposing the upper drainage pipe 4 and the lower drainage pipe 5 to observe them. This allows for the selection of appropriate connecting pipe groups 6 to connect the upper drainage pipe 4 and the lower drainage pipe 5, even if their axial positions are misaligned. This enables quick and accurate connection of the upper drainage pipe 4 and the lower drainage pipe 5 in modular buildings, making the connection of the upper drainage pipe 4 and the lower drainage pipe 5 simpler and faster, improving work efficiency. At the same time, it also improves the pipe assembly rate and installation quality of the drainage pipe well 7 in modular buildings, saving construction costs. Preferably, the outer walls of the rotating base plate 2 can fit against the inner wall of the drainage manhole 7 to seal the bottom of the drainage manhole 7, thereby preventing water or mud from flowing into the drainage manhole 7 during construction and improving the sealing performance.

[0036] Furthermore, the first connecting member 3 is a lifting mechanism 31. The second connecting member 8 is a bolt. One end of the rotating base plate 2 is connected to a fixed component 1 via the lifting mechanism 31. The lifting mechanism 31 can drive the rotating base plate 2 to rise and fall vertically, and the rotating base plate 2 is rotatably connected to the lifting mechanism 31. The lifting mechanism 31 can drive the rotating base plate 2 to rise and fall vertically, and the rotating base plate 2 can rotate around the axis of the lifting mechanism 31. By setting the lifting mechanism 31, the lifting mechanism 31 can drive the rotating base plate 2 to rise and fall vertically, and the rotating base plate 2 can rotate around the axis of the lifting mechanism 31, so that the rotating base plate 2 can be detached from the drainage pipe well 7, exposing the upper drainage pipe 4 and the lower drainage pipe 5, so that the upper drainage pipe 4 and the lower drainage pipe 5 can be connected by a suitable connecting pipe assembly 6. Even if the axis deviation between the upper drainage pipe 4 and the lower drainage pipe 5 is large, it can be quickly and accurately adjusted and connected, greatly improving the connection efficiency of the upper drainage pipe 4 and the lower drainage pipe 5. Furthermore, by removing the second connecting piece 8, the lifting mechanism 31 drives the rotating base plate 2 to rise and fall vertically and rotate. This not only allows the rotating base plate 2 to detach from the drainage pipe well 7, avoiding interference with the drainage pipe well 7 when the rotating base plate 2 rotates, but also exposes the upper drainage pipe 4 and the lower drainage pipe 5 by rotating the rotating base plate 2. Then, the connecting pipe groups 6 corresponding to the axes of the upper drainage pipe 4 and the lower drainage pipe 5 are selected for docking, thus completing the docking process of the upper drainage pipe 4 and the lower drainage pipe 5. No complicated tools or equipment are required, which greatly improves the working efficiency when docking the upper drainage pipe 4 and the lower drainage pipe 5, and makes the operation simpler and faster.

[0037] Furthermore, the lifting mechanism 31 includes a lifting seat 311, a pull rod 312, and a limiting ring 313. The lifting seat 311 is rotatably and vertically movable inside a fixed component 1. The limiting ring 313 is installed inside the fixed component 1. The top of the pull rod 312 is connected to the bottom of the lifting seat 311, and the bottom of the pull rod 312 passes through the limiting ring 313, the fixed component 1, and the rotating base plate 2, respectively. The pull rod 312 is rotatably connected to the rotating base plate 2. The pull rod 312 and the lifting seat 311 can drive the rotating base plate 2 to descend vertically, and the rotating base plate 2 can rotate around the axis of the pull rod 312. By setting up a lifting seat 311 and a pull rod 312, the pull rod 312 is not only connected to the lifting seat 311 but also to the rotating base plate 2. This allows the pull rod 312 to drive the lifting seat 311 to move vertically, simultaneously driving the rotating base plate 2 to move vertically beyond the bottom of the drainage manhole 7. The rotating base plate 2 can then rotate around the axis of the pull rod 312, exposing the upper drainage pipe 4 and the lower drainage pipe 5. These are then connected to the upper drainage pipe 4 and the lower drainage pipe 5 via a suitable connecting pipe assembly 6, further improving the connection efficiency of the upper drainage pipe 4 and the lower drainage pipe 5. A limit ring 313 is set to limit the vertical movement of the pull rod 312, preventing it from deviating.

[0038] Furthermore, the lifting mechanism 31 also includes an elastic element 314. The elastic element 314 is sleeved on the outer wall of the pull rod 312 and is located between the lifting seat 311 and the limiting ring 313, providing buffering and rebounding force for the lifting seat 311. By setting the elastic element 314, it can provide buffering force for the lifting seat 311 when the pull rod 312 is pulled down, preventing the pull rod 312 from being pulled down too much, causing the fixed component 1 and the rotating base plate 2 to detach, resulting in mold damage. After determining the model of the connecting pipe assembly 6, the upper drain pipe 4 and the lower drain pipe 5 are pre-connected through the connecting pipe assembly 6. After determining the specifications of the connecting pipe assembly 6, the rotating base plate 2 is rotated back to its original position before rotation, the pull rod 312 is released, and the elastic element 314 provides rebounding force to the lifting seat 311, thereby resetting the lifting seat 311, the pull rod 312, and the rotating base plate 2, improving work efficiency. Preferably, the lifting mechanism 31 further includes a pull ring 315, which is installed at the bottom of the pull rod 312. The pull ring 315 provides a convenient manual operation point for the operator, making it easier for the operator to pull the pull rod 312.

[0039] Furthermore, when the rotating base plate 2 is in its initial position, the bottom wall of the rotating base plate 2 is on the same plane as the bottom wall of the drainage manhole 7. The thickness range and the vertical descent height range of the rotating base plate 2 are both 150mm-500mm. This not only improves the strength of the rotating base plate 2, but also ensures that when the rotating base plate 2 needs to rotate, the top wall of the rotating base plate 2 can fit against or extend beyond the bottom wall of the drainage manhole 7, thus avoiding interference between the rotating base plate 2 and the drainage manhole 7.

[0040] Furthermore, the fixing assembly 1 includes a fixing plate 11 and multiple fixing bolts 12. The fixing plate 11 is installed on one inner wall of the drainage pipe well 7 by the multiple fixing bolts 12. The fixing plate 11 has a lifting space 111, and the lifting seat 311, the limiting ring 313, and the elastic element 314 are all placed in the lifting space 111. The rotating base plate 2 is connected to the two fixing plates 11 by the second connecting member 8 and the tie rod 312 respectively. By setting the fixing plate 11 and multiple fixing bolts 12, the fixing plate 11 can be stably fixed to the inner wall of the drainage pipe well 7, preventing the fixing plate 11 from falling off and improving the stability of the fixing assembly 1.

[0041] Furthermore, the connecting pipe assembly 6 includes an eccentric pipe 61 and a connecting pipe 62. The connecting pipe 62 is located inside the pipe hole 21. Both ends of the eccentric pipe 61 are connected to their corresponding upper drain pipe 4 and connecting pipe 62, respectively, and the other end of the connecting pipe 62 is connected to the lower drain pipe 5. By setting the eccentric pipe 61 and connecting pipe 62, a stable connection between the upper drain pipe 4 and the lower drain pipe 5 can be achieved. Even if the axes of the upper drain pipe 4 and the lower drain pipe 5 are not aligned, they can still be connected, thus ensuring the connection and accuracy of the connection.

[0042] Based on the above structure, the working principle of a pipe connection mold for drainage manhole 7 in modular buildings according to this embodiment is as follows:

[0043] like Figures 1-7 As shown, in the initial state, the multiple pipe holes 21 of the rotating base plate 2 correspond one-to-one with the multiple lower drain pipes 5 and are coaxial. The rotating base plate 2 is located inside the drain pipe well 7 and is connected to two fixed plates 11 through the first connector 3 and the second connector 8. When it is necessary to connect the upper drain pipe 4 and the lower drain pipe 5, first remove the second connector 8, and then manually pull the pull ring 315 vertically downward, so that the pull rod 312 and the lifting seat 311 move vertically downward. At this time, the elastic element 314 is compressed, providing a buffer force for the lifting seat 311, until the rotating base plate 2 is driven to detach from the drain pipe well 7. Then, the rotating base plate 2 is driven to rotate around the axis of the pull rod 312, so that the upper drain pipe 4 is exposed. The operator selects an eccentric pipe 61 suitable for connecting the upper drain pipe 4 and the lower drain pipe 5 based on the position of the upper drain pipe 4 and the lower drain pipe 5, and connects one end of the eccentric pipe 61 to the upper drain pipe 4. Then, rotate the base plate 2 to return it to its original position before rotation. Simultaneously, align the other end of the eccentric tube 61 with the tube hole 21 on the base plate 2. Next, release the pull ring 315; the elastic element 314 provides a restoring force to the lifting seat 311, causing the lifting seat 311 to simultaneously lift the pull rod 312 and the base plate 2 to their initial positions. Finally, connect the end of the eccentric tube 61 furthest from the upper drain pipe 4 to the lower drain pipe 5 via the connecting pipe 62, thus completing the connection between the upper drain pipe 4 and the lower drain pipe 5.

[0044] Example 2

[0045] like Figure 8 As shown, the pipe connection mold for the drainage manhole 7 in this embodiment differs from that in Embodiment 1 in that the first connector 3 and the second connector 8 in this embodiment are both bolts. The rotating base plate 2 is detachably connected to the bottom of the two fixing components 1 by two bolts. By using bolts for both the first connector 3 and the second connector 8, the rotating base plate 2 and the fixing components 1 can be more easily assembled and disassembled through the first connector 3 and the second connector 8. This allows the rotating base plate 2 to be removed, enabling workers to observe the upper drainage pipe 4 and the lower drainage pipe 5, thus making the connection of the upper drainage pipe 4 and the lower drainage pipe 5 simpler and more convenient, and improving work efficiency.

[0046] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0048] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A pipe connection mold for a drainage manhole in a modular building, wherein the drainage manhole (7) is provided with a plurality of upper drainage pipes (4) and a plurality of lower drainage pipes (5), characterized in that, The pipeline docking mold includes a rotating base plate (2), a first connector (3), a second connector (8), and two fixing components (1); The two fixing components (1) are respectively installed on opposite sides of the inner wall of the drainage pipe well (7), and the rotating base plate (2) is detachably connected to the two fixing components (1) through the first connector (3) and the second connector (8); The rotating base plate (2) has multiple pipe holes (21), which correspond one-to-one with the multiple drain pipes (5) and are coaxially arranged. Each pipe hole (21) is provided with a connecting pipe group (6). The upper drain pipe (4) and the lower drain pipe (5) are connected by the connecting pipe assembly (6).

2. The pipe connection mold for drainage manholes in modular buildings as described in claim 1, characterized in that: The outer walls of the rotating base plate (2) can fit against the inner wall of the drainage manhole (7) to seal the bottom of the drainage manhole (7).

3. The pipe connection mold for drainage manholes in modular buildings as described in claim 2, characterized in that: Both the first connector (3) and the second connector (8) are bolts; The rotating base plate (2) is detachably connected to the bottom of the two fixing components (1) by two bolts.

4. The pipe connection mold for drainage manholes in modular buildings as described in claim 2, characterized in that: The first connecting member (3) is a lifting mechanism (31); The second connecting member (8) is a bolt; One end of the rotating base plate (2) is connected to a fixed component (1) through the lifting mechanism (31). The lifting mechanism (31) can drive the rotating base plate (2) to rise and fall vertically, and the rotating base plate (2) is rotatably connected to the lifting mechanism (31). The lifting mechanism (31) can drive the rotating base plate (2) to rise and fall vertically, and the rotating base plate (2) can rotate around the axis of the lifting mechanism (31).

5. The pipe connection mold for drainage manholes in modular buildings as described in claim 4, characterized in that: The lifting mechanism (31) includes a lifting seat (311), a pull rod (312), and a limiting ring (313); The lifting seat (311) is rotatably and vertically movable inside a fixed component (1), the limiting ring (313) is installed inside the fixed component (1), the top of the pull rod (312) is connected to the bottom of the lifting seat (311), the bottom of the pull rod (312) passes through the limiting ring (313), the fixed component (1) and the rotating base plate (2) respectively, and the pull rod (312) is rotatably connected to the rotating base plate (2); The pull rod (312) and the lifting seat (311) can drive the rotating base plate (2) to descend vertically, and the rotating base plate (2) can rotate around the axis of the pull rod (312).

6. The pipe connection mold for drainage manholes in modular buildings as described in claim 5, characterized in that: The lifting mechanism (31) also includes an elastic element (314); The elastic element (314) is sleeved on the outer wall of the pull rod (312), and the elastic element (314) is located between the lifting seat (311) and the limiting ring (313) to provide buffering force and rebound force for the lifting seat (311).

7. The pipe connection mold for drainage manholes in modular buildings as described in claim 5, characterized in that: The lifting mechanism (31) also includes a pull ring (315), which is installed at the bottom of the pull rod (312).

8. The pipe connection mold for drainage manholes in modular buildings as described in claim 5, characterized in that: When the rotating base plate (2) is in its initial position, the bottom wall of the rotating base plate (2) and the bottom wall of the drainage pipe well (7) are on the same plane; The thickness range and vertical descent height range of the rotating base plate (2) are both 150mm-500mm.

9. The pipe connection mold for drainage manholes in modular buildings as described in claim 5, characterized in that: The fixing component (1) includes a fixing plate (11) and a plurality of fixing bolts (12); The fixing plate (11) is installed on the inner wall of the drainage pipe well (7) by the plurality of fixing bolts (12). The fixing plate (11) is provided with a lifting space (111). The lifting seat (311), the limiting ring (313) and the elastic element (314) are all placed in the lifting space (111). The rotating base plate (2) is connected to the two fixing plates (11) by the second connecting member (8) and the pull rod (312) respectively.

10. The pipe connection mold for drainage manholes in modular buildings as described in claim 5, characterized in that: The connecting pipe assembly (6) includes an eccentric pipe (61) and a connecting pipe (62); The connecting pipe (62) is located inside the pipe hole (21). The two ends of the eccentric pipe (61) are connected to the corresponding upper drain pipe (4) and the connecting pipe (62) respectively. The other end of the connecting pipe (62) is connected to the lower drain pipe (5).

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