Pipe connection device and method for preventing differential settlement damage

Abstract

The application provides a pipeline connecting device and method for preventing damage caused by settlement difference. The device comprises a concrete structure, a pre-buried sleeve pipe arranged in the concrete structure, a fixed pressing plate arranged on one side of the pre-buried sleeve pipe and connected with the other end of the pre-buried sleeve pipe, a pipeline installation gap hole arranged on the fixed pressing plate and the pre-buried sleeve pipe, and a blocking pressing plate arranged on one side of the fixed pressing plate and connected with the fixed pressing plate through a sliding assembly in a position-adjustable manner along the vertical direction. The blocking pressing plate and the fixed pressing plate can slide relative to the vertical direction through the sliding assembly. The pipeline installation gap hole is arranged on the pre-buried sleeve pipe and the fixed pressing plate under poor geological conditions. When the concrete structure, the pre-buried sleeve pipe and the fixed pressing plate settle, the position of the pipeline does not change, so that the buried pipeline is prevented from being damaged due to the settlement difference after passing through the concrete structure.

Description

Technical Field

[0001] This invention relates to the field of equipment installation and construction technology, and more specifically, to a pipe connection device and method for preventing damage from differential settlement. Background Technology

[0002] When underground pipelines pass through concrete structures, a common practice is to first embed a sleeve, and then the pipeline directly passes through the embedded sleeve for connection. However, because the ends of the sleeve are not sealed, under adverse geological conditions, the differential settlement between the concrete structure and the buried pipeline can cause shear damage to the pipeline, thus affecting the concrete structure and making pipeline maintenance inconvenient. Summary of the Invention

[0003] In view of this, the present invention proposes a pipe connection device and method to prevent damage caused by differential settlement, aiming to solve the problem of shear damage to existing concrete structures and buried pipes caused by differential settlement.

[0004] On one hand, the present invention proposes a pipe connection device to prevent damage from differential settlement. The device includes: a concrete structure; a pre-embedded sleeve, which is inserted into the concrete structure so that the pipe can pass through the pre-embedded sleeve and through the concrete structure; a fixed pressure plate, which is disposed on one side of the pre-embedded sleeve and connected to the other end of the pre-embedded sleeve. The fixed pressure plate and the pre-embedded sleeve are provided with pipe installation clearance holes for installing the pipe and for clearance matching with the pipe so that the fixed pressure plate, the pre-embedded sleeve and the concrete structure can settle relative to the pipe; and a sealing pressure plate, which is disposed on one side of the fixed pressure plate and connected to the fixed pressure plate in a vertically adjustable manner via a sliding component. The sealing pressure plate is used to seal the outer periphery of the pipe to prevent debris from entering the pre-embedded sleeve, while the fixed pressure plate settles relative to the pipe and the sealing pressure plate along with the pre-embedded sleeve and the concrete structure.

[0005] Furthermore, in the aforementioned pipe connection device for preventing damage from differential settlement, the sliding component includes a sliding plate and a support plate; wherein the sliding plate is vertically disposed on the fixed pressure plate, the support plate is vertically disposed on the sealing pressure plate, and the sliding plate and the support plate are stacked along their thickness direction and slidably connected in the vertical direction, so that the fixed pressure plate can slide vertically relative to the sealing pressure plate.

[0006] Furthermore, in the aforementioned pipe connection device for preventing damage from differential settlement, the sliding plate is provided with a length adjustment hole arranged vertically, the support plate is provided with a support hole, and a connecting rod is provided between the sliding plate and the support plate. The connecting rod passes through the support hole and is slidably inserted through the length adjustment hole along the length direction of the length adjustment hole, so that the connecting rod can slide within the length adjustment hole, thereby realizing the relative vertical sliding between the sliding plate and the support plate, and thus enabling the fixed pressure plate to slide vertically relative to the sealing pressure plate.

[0007] Furthermore, in the aforementioned pipe connection device for preventing damage from differential settlement, the sliding assembly comprises two sliding plates and two supporting plates, with the two supporting plates spaced apart and the two sliding plates positioned on opposite sides of the two supporting plates. The connecting rod passes through the supporting holes of the two supporting plates and is slidably inserted through the length adjustment holes of the two sliding plates. The connecting rod is provided with a roller positioned between the two supporting plates, which allows the roller to roll vertically along the fixed pressure plate and the sealing pressure plate when the sliding plate slides relative to the supporting plate.

[0008] Furthermore, in the aforementioned pipe connection device for preventing damage from differential settlement, the length adjustment hole is a waist-shaped hole.

[0009] Furthermore, in the aforementioned pipe connection device for preventing damage from differential settlement, the fixed pressure plate and the sealing pressure plate are spaced apart, and a water-stop sealing ring is provided between the fixed pressure plate and the sealing pressure plate for fitting around the outer ring of the pipe to perform a second sealing.

[0010] Furthermore, in the aforementioned pipe connection device for preventing damage from differential settlement, a protective shell is provided along the outer circumference of the fixed pressure plate and the sealing pressure plate to prevent backfill soil from filling into the fixed pressure plate and the sealing pressure plate.

[0011] Furthermore, in the aforementioned pipe connection device for preventing damage from differential settlement, the sealing plate is also provided with a top pressure flange for applying extrusion pressure to the water-stop sealing ring to compact the water-stop sealing ring.

[0012] Furthermore, in the aforementioned pipe connection device for preventing damage from differential settlement, a pressure cylinder is provided on one side of the pressure flange, which extends from the pipe hole of the sealing pressure plate to the space between the sealing pressure plate and the fixed pressure plate to apply extrusion pressure to the water-stop sealing ring and protect the pipe.

[0013] On the other hand, this invention proposes a pipe connection method to prevent damage from differential settlement. The method employs the aforementioned pipe connection device for protection against differential settlement damage, comprising the following steps: The pipe is sequentially passed through the concrete structure of the pipe connection device, the embedded sleeve, the fixing plate, the water-stop sealing ring, and the sealing plate; after the pipe extends beyond the sealing plate, a top-pressure flange is fitted, and the top-pressure flange on the pipe is connected to the sealing plate of the pipe connection device, and the water-stop sealing ring is compacted by the top-pressure flange; a protective shell is installed between the fixing plate and the sealing plate of the pipe connection device to protect the components between them; the top-pressure flange is first wrapped with a plastic film, and the perimeter of the pipe connection device is backfilled with medium-coarse sand and manually compacted.

[0014] The pipe connection device and method for preventing damage due to differential settlement provided by this invention allows the sealing pressure plate and the fixed pressure plate to slide vertically relative to each other through a sliding component. This enables the fixed pressure plate, the embedded sleeve, and the concrete structure to form an integral structure, which can settle accordingly. Because the embedded sleeve and the fixed pressure plate have pipe installation clearance holes, and there is a clearance fit between them and the pipe, especially with a relatively large clearance, the position of the pipe can remain unchanged when the concrete structure, the embedded sleeve, and the fixed pressure plate settle. Simultaneously, due to the sliding component, the sealing pressure plate and the fixed pressure plate can move vertically relative to each other, thereby ensuring that the concrete structure, the embedded sleeve, and the fixed pressure plate remain in place. When the pressure plate settles, its position remains unchanged, thus supporting the pipeline and preventing shear damage caused by settlement along with the concrete structure and embedded sleeve. In other words, the pressure plate and pipeline are fixed, while the concrete structure, embedded sleeve, and fixed pressure plate settle relative to them, without shearing damage to the pipeline. This effectively solves the problem of shear damage to the pipeline caused by differential settlement between the concrete structure and the buried pipeline, and also prevents pipeline leakage from affecting the concrete structure. It facilitates maintenance and, under adverse geological conditions, can protect the buried pipeline from damage due to differential settlement after passing through a concrete structure. This device also has the following effects: First, a water-stop sealing ring is provided between the fixed pressure plate and the sealing pressure plate to prevent water and soil from entering the pre-embedded sleeve; Secondly, when a pipe leaks inside a concrete structure, it can be excavated directly from both sides to remove and replace the damaged pipe from the casing. Since the casing is sealed on both sides, there are no debris inside the casing. Compared with the existing pipes, which require cleaning the debris inside the casing before maintenance, this device facilitates pipe maintenance. Third, due to the protection provided by the device, damaged pipes can be easily replaced without damaging the concrete structure, thus avoiding damage to the concrete structure caused by pipe leakage. Attached Figure Description

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a front view of a pipe connection device for preventing damage from differential settlement provided in an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a pipe connection device for preventing damage from differential settlement provided in an embodiment of the present invention; Figure 3 Side view of a pipe connection device for preventing damage due to differential settlement provided in an embodiment of the present invention. Figure 4 This is a cross-sectional view of a pipe connection device for preventing damage due to differential settlement provided in an embodiment of the present invention. Figure 5 A cross-sectional view of the structure of a pipe connection device for preventing damage from differential settlement provided in an embodiment of the present invention; Figure 6 This is a flowchart illustrating a pipeline connection method for preventing damage from differential settlement, as provided in an embodiment of the present invention. Detailed Implementation

[0016] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] Device Example: See Figures 1 to 5 This figure illustrates a preferred structure of a pipe connection device for preventing damage from differential settlement provided in an embodiment of the present invention. As shown, the device includes: a concrete structure 1, an embedded sleeve 2, a fixing pressure plate 3, a sealing pressure plate 4, a sliding assembly 5, a protective shell 6, and a top-pressure flange 7; wherein, An embedded sleeve 2 is installed in the concrete structure 1 so that the pipe 8 can pass through the concrete structure 1 through the embedded sleeve 2. Specifically, the inner diameter of the embedded sleeve 2 is 100mm larger than the outer diameter of the pipe 8 to ensure that there is a settlement gap between them. Of course, the diameter difference can also be other values, and no limitation is made in this embodiment. In this embodiment, the embedded sleeve 2 can be a steel sleeve, and the length of the embedded sleeve 2 can extend 100mm from each end of the concrete structure 1; wherein, the central axis of the embedded sleeve 2 can be consistent with the central axis of the pipe 8.

[0018] The fixing plate 3 is set on one side of the pre-embedded sleeve 2 (e.g., Figure 1 (as shown on the left), and, the other end of the fixed pressure plate 3 and the pre-embedded sleeve 2 (as shown on the left). Figure 1 The fixed pressure plate 3, the embedded sleeve 2, and the concrete structure 1 are connected to each other (as shown on the left end). Pipe installation clearance holes are provided on the fixed pressure plate 3, the embedded sleeve 2, and the concrete structure 1 for installing the pipe 8 and ensuring clearance fit with the pipe 8, so that the fixed pressure plate 3, the embedded sleeve 2, and the concrete structure 1 can settle relative to the pipe. Specifically, the fixed pressure plate 3 can serve as a rolling support, which is welded to the end of the embedded sleeve 2 (as shown on the left end). Figure 1 As shown on the left end), in this embodiment, the left end of the pre-embedded sleeve 2 is provided with a fixed pressure plate 3, a sealing pressure plate 4, a sliding component 5, a protective shell 6, and a top pressure flange 7. Of course, the right end of the pre-embedded sleeve 2 can also be symmetrically provided with a fixed pressure plate 3, a sealing pressure plate 4, a sliding component 5, a protective shell 6, and a top pressure flange 7, so that both ends of the pre-embedded sleeve 2 can be sealed.

[0019] The sealing pressure plate 4 is set on one side of the fixed pressure plate 3 (e.g., Figure 1(As shown on the left), and the sealing pressure plate 4 and the fixed pressure plate 3 are connected in a vertical direction by the sliding component 5 in a position-adjustable manner, for sealing the outer periphery of the pipe 8 to prevent debris from entering the pre-embedded sleeve 2. The fixed pressure plate 3 can settle relative to the pipe 8 and the sealing pressure plate 4 along with the pre-embedded sleeve 2 and the concrete structure 1. Specifically, the sealing pressure plate 4 is provided with a support mounting hole, which is adapted to the outer diameter of the pipe 8 to seal the pipe 8; the sliding component 5 is disposed between the sealing pressure plate 4 and the fixed pressure plate 3, and is connected to both the sealing pressure plate 4 and the fixed pressure plate 3 to realize the relative vertical position adjustment between the sealing pressure plate 4 and the fixed pressure plate 3, so that the fixed pressure plate 3, the embedded sleeve 2 and the concrete structure 1 form an integral structure. This integral structure can settle accordingly. Since the embedded sleeve 2 and the fixed pressure plate 3 are provided with pipe installation clearance holes, and there is a clearance fit with the pipe 8, especially with a large clearance, the position of the pipe 8 can remain unchanged when the concrete structure 1, the embedded sleeve 2 and the fixed pressure plate 3 settle; at the same time, due to the setting of the sliding component 5, the sealing... The pressure plate 4 and the fixed pressure plate 3 can move vertically relative to each other, so that when the concrete structure 1, the embedded sleeve 2, and the fixed pressure plate 3 settle, the position of the sealing pressure plate 4 does not change. This supports the pipeline 8 and prevents the pipeline 8 from being sheared as the concrete structure 1 and the embedded sleeve 2 settle. In other words, the sealing pressure plate 4 and the pipeline 8 are fixed, and the concrete structure 1, the embedded sleeve 2, and the fixed pressure plate 3 settle relative to them without shearing damage to the pipeline 8. This effectively solves the problem of shear damage to the pipeline caused by the settlement difference between the concrete structure and the buried pipeline, and avoids the impact of pipeline leakage on the concrete structure. It also facilitates maintenance and can be used under adverse geological conditions to prevent damage to the buried pipeline due to settlement difference after passing through the concrete structure. In this embodiment, there are four sets of sliding components 5, which are respectively set at the four corners of the fixed pressure plate 3 and the sealing pressure plate 4.

[0020] In this embodiment, the fixing pressure plate 3 and the sealing pressure plate 4 are spaced apart, and a water-stop sealing ring 9 is provided between the fixing pressure plate 3 and the sealing pressure plate 4 for fitting around the outer ring of the pipe 8 for resealing. Specifically, the water-stop sealing ring 9 can be a flexible waterproof sleeve or an elastic silicone rubber water-stop sealing ring, which can be installed on the pipe 8. In this embodiment, the inner diameter of the water-stop sealing ring 9 can be smaller than the inner diameter of the pipe 8. For example, the inner diameter of the water-stop sealing ring 9, i.e., the reserved hole in the middle of the elastic rubber water-stop sealing ring, should be 2~3mm smaller than the outer diameter of the actual pipe. The material is silicone rubber for sealing.

[0021] In this embodiment, a protective shell 6 is provided along the outer circumference of the fixing plate 3 and the sealing plate 4 to prevent backfill soil from filling into the fixing plate 3 and the sealing plate 4. Specifically, the protective shell 6 is installed between the fixing plate 3 and the sealing plate 4. The protective shell 6 can be a corrugated rubber protective shell to prevent the sliding component 5 from entering the soil and sand and corroding after being buried, which would render the sliding component unusable.

[0022] See also Figures 1 to 5 The sealing plate 4 is also equipped with a top-pressure flange 7, which is used to apply pressure to the water-stop sealing ring 9 to compact it. Specifically, a top-pressure cylinder 71 is provided on one side of the top-pressure flange 7, which extends from the pipe hole of the sealing plate 4 to the space between the sealing plate 4 and the fixed plate 3 to apply pressure to the water-stop sealing ring 9 and protect the pipe 8. The outer diameter of the top-pressure cylinder 71 can be matched with the inner diameter of the pipe hole of the sealing plate 4, and the inner diameter of the top-pressure cylinder 71 can be matched with the outer diameter of the pipe 8. This sealing and pressure application allows the top-pressure cylinder 71 and the water-stop sealing ring 9 to seal the pipe 8, especially to seal the end of the pre-embedded sleeve 2, preventing debris from entering the pre-embedded sleeve 2, and also to stop water leakage.

[0023] See also Figure 4 and Figure 5 The sliding assembly 5 includes a sliding plate 51 and a support plate 52. The sliding plate 51 is vertically disposed on the fixed pressure plate 3, and the support plate 52 is vertically disposed on the sealing pressure plate 4. The sliding plate 51 and the support plate 52 are stacked along their thickness direction and slidably connected in the vertical direction so that the fixed pressure plate 3 can slide vertically relative to the sealing pressure plate 4.

[0024] Specifically, both the sliding plate 51 and the support plate 52 are vertical plates, and their width direction can be along... Figure 4 The horizontal arrangement shown is between the fixed pressure plate 3 and the sealing pressure plate 4, and the length direction can be arranged vertically. The right side wall of the sliding plate 51 can be fixedly connected to the left side wall of the fixed pressure plate 3, and the left side wall of the support plate 52 can be fixedly connected to the right side wall of the sealing pressure plate 4. The sliding plate 51 and the support plate 52 can be stacked one after the other, and they are slidably connected vertically by a connecting rod 53, so that the sliding plate 51 and the support plate 52 can be adjusted vertically, thereby allowing the fixed pressure plate 3 to slide vertically relative to the sealing pressure plate 4. This allows the fixed pressure plate 3 to settle with the concrete structure 1, etc., and avoids the shearing damage to the pipe 8 caused by the settlement of the sealing pressure plate 4 with the fixed pressure plate 3.

[0025] In this embodiment, the sliding plate 51 is provided with a length adjustment hole 511 arranged vertically, and the support plate 52 is provided with a support hole. A connecting rod 53 is provided between the sliding plate 51 and the support plate 52. The connecting rod 53 passes through the support hole and is slidably inserted through the length adjustment hole 511 along its length direction, so that the connecting rod 53 can slide within the length adjustment hole 511, thereby realizing the relative vertical sliding between the sliding plate 51 and the support plate 52, and thus enabling the fixed pressure plate 3 to slide vertically relative to the sealing pressure plate 4. Specifically, the length adjustment hole 511 can be a vertically arranged oblong hole, and the support hole can be a circular hole adapted to the connecting rod 53, or other structures, such as an oblong hole, to increase the vertical adjustment range.

[0026] In this embodiment, the sliding assembly 5 consists of two sliding plates 51 and two support plates 52, with the two support plates 52 spaced apart. The two sliding plates 51 are located on both sides of the two support plates 52. The connecting rod 53 passes through the support holes of the two support plates 52 and slidably passes through the length adjustment holes 511 of the two sliding plates 51, so as to facilitate relative sliding between the sealing pressure plate 4 and the fixed pressure plate 3. Specifically, the connecting rod 53 is provided with a roller 54 placed between the two support plates 52, which is used to vertically roll along the fixed pressure plate 3 and the sealing pressure plate 4 when the sliding plate 51 slides relative to the support plate 52. The outer diameter of the roller 54 is adapted to the distance between the fixed pressure plate 3 and the sealing pressure plate 4, so as to provide convenience for relative sliding and reduce friction. In this embodiment, the fixed pressure plate 3, the sealing pressure plate 4, the sliding plate 51, the support plate 52, the connecting rod 53, etc. can be combined to form a rolling support to provide sliding support for the roller 54.

[0027] In summary, the pipe connection device for preventing damage due to differential settlement provided in this embodiment allows the sealing pressure plate and the fixed pressure plate to slide vertically relative to each other through the sliding component, so that the fixed pressure plate 3, the embedded sleeve 2, and the concrete structure 1 form an integral structure. This integral structure can settle accordingly. Since the embedded sleeve 2 and the fixed pressure plate 3 are provided with pipe installation clearance holes, and there is a clearance fit between them and the pipe 8, especially with a large clearance, the position of the pipe 8 can remain unchanged when the concrete structure 1, the embedded sleeve 2, and the fixed pressure plate 3 settle. At the same time, due to the setting of the sliding component 5, the sealing pressure plate 4 and the fixed pressure plate 3 can move vertically relative to each other, thereby allowing the concrete structure 1, the embedded sleeve 2, and the fixed pressure plate 1 to settle. When the fixed pressure plate 3 settles, the position of the sealing pressure plate 4 remains unchanged, thus supporting the pipeline 8 and preventing shear damage to the pipeline 8 caused by settlement along with the concrete structure 1 and the embedded sleeve 2. In other words, with the sealing pressure plate 4 and the pipeline 8 fixed, the concrete structure 1, the embedded sleeve 2, and the fixed pressure plate 3 settle relative to them without causing shear damage to the pipeline 8. This effectively solves the problem of shear damage to the pipeline caused by differential settlement between the concrete structure and the buried pipeline, and also prevents pipeline leakage from affecting the concrete structure. It facilitates maintenance and, under adverse geological conditions, can protect the buried pipeline from damage due to differential settlement after passing through a concrete structure. This device also has the following effects: First, a water-stop sealing ring 9 is provided between the fixed pressure plate 3 and the sealing pressure plate 4, which can prevent water and soil from entering the pre-embedded sleeve. Secondly, when a pipe leaks inside a concrete structure, it can be excavated directly from both sides to remove and replace the damaged pipe from the casing. Since the casing is sealed on both sides, there are no debris inside the casing. Compared with the existing pipes, which require cleaning the debris inside the casing before maintenance, this device facilitates pipe maintenance. Third, due to the protection provided by the device, damaged pipes can be easily replaced without damaging the concrete structure, thus avoiding damage to the concrete structure caused by pipe leakage.

[0028] Method Implementation Examples: See Figure 6 This is a flowchart illustrating a pipe connection method for preventing damage due to differential settlement, provided in an embodiment of the present invention. As shown in the figure, the pipe connection method includes the following steps: Step S1: Pass the pipe through the concrete structure of the pipe connection device, the embedded sleeve, the fixing pressure plate, the water-stop sealing ring, and the sealing pressure plate in sequence.

[0029] Specifically, the pre-embedded sleeve can be pre-embedded first, that is, the pre-embedded steel sleeve. Specifically, a steel sleeve with an inner diameter 100mm larger than the outer diameter of the formal pipe can be selected as the pre-embedded sleeve 2. The length of the sleeve extends 100mm beyond each end of the concrete structure 1. Rolling supports can also be welded to both ends of the sleeve. The central axis of the pre-embedded sleeve 2 is consistent with the central axis of the pipe 8.

[0030] Step S2: After the pipe extends beyond the sealing plate, the top pressure flange is fitted and connected to the sealing plate of the pipe connection device. The water-stop sealing ring is then compacted by the top pressure flange.

[0031] Specifically, the pipe connection device can be installed by first passing the pipe 8 through the pipe connection device, and then installing the water-stop sealing ring 9 at the pipe position in the middle of the pipe connection device. The water-stop sealing ring 9 can be installed by passing the pipe 8 through the sealing pressure plate 4 and the fixing pressure plate 3. When the pipe 8 extends from the rolling support, the top pressure flange 7 is put on the pipe 8 and connected to the pipe connection device. In particular, the top pressure flange 7 can be fixed to the sealing pressure plate 4 by bolts to compact the water-stop sealing ring 9.

[0032] Step S3: Install a protective shell between the fixed pressure plate and the sealing pressure plate of the pipe connection device to protect the components between the fixed pressure plate and the sealing pressure plate.

[0033] Specifically, a protective shell 6 is installed between the two clamping plates of the pipe connection device, namely between the fixing pressure plate and the sealing pressure plate, to prevent the roller 54 from entering the soil and sand and rusting after it is buried, which would render the roller 54 unusable.

[0034] Step S4: First, wrap the top pressure flange with plastic film, and backfill the area around the pipe connection device with medium-coarse sand, then manually compact it.

[0035] Specifically, for pipeline backfilling, the top pressure flange 7 position can be wrapped with plastic film before backfilling to prevent rust after burial. Medium and coarse sand should be used for backfilling around the device and manually compacted.

[0036] Since the pipe connection method for preventing damage due to settlement difference adopts the aforementioned pipe connection device for preventing damage due to settlement difference, and the pipe connection device for preventing damage due to settlement difference has the aforementioned effects, the pipe connection method for preventing damage due to settlement difference also has the aforementioned effects.

[0037] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0038] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A pipe connection device for preventing damage from differential settlement, characterized in that, include: Concrete structure; An embedded sleeve is installed in the concrete structure so that the pipe can pass through the concrete structure from the embedded sleeve. A fixed pressure plate is provided on one side of the pre-embedded sleeve, and the fixed pressure plate is connected to the other end of the pre-embedded sleeve. The fixed pressure plate and the pre-embedded sleeve are provided with pipe installation gap holes for installing pipes and fitting with the pipe gap, so that the fixed pressure plate, the pre-embedded sleeve and the concrete structure can settle relative to the pipe. A sealing plate is disposed on one side of the fixed plate, and the sealing plate and the fixed plate are connected vertically in a position-adjustable manner via a sliding assembly. The sealing plate is used to seal the outer circumference of the pipe to prevent debris from entering the embedded sleeve. The fixed plate, along with the embedded sleeve and the concrete structure, can settle relative to the pipe and the sealing plate. The sliding assembly includes a sliding plate and a support plate. The sliding plate is vertically disposed on the fixed pressure plate, the support plate is vertically disposed on the sealing pressure plate, and the sliding plate and the support plate are stacked along their thickness direction and slidably connected in the vertical direction so that the fixed pressure plate can slide vertically relative to the sealing pressure plate; The sliding plate is provided with a length adjustment hole arranged in the vertical direction, the support plate is provided with a support hole, and a connecting rod is provided between the sliding plate and the support plate. The connecting rod passes through the support hole and is slidably passed through the length adjustment hole along the length direction of the length adjustment hole, so that the connecting rod can slide within the length adjustment hole, thereby realizing the relative vertical sliding between the sliding plate and the support plate, so that the fixed pressure plate can slide vertically relative to the sealing pressure plate.

2. The pipe connection device for preventing damage due to differential settlement according to claim 1, characterized in that, The sliding assembly consists of two sliding plates and two support plates, with the two support plates spaced apart and the two sliding plates located on both sides of the two support plates. The connecting rod passes through the support holes of the two support plates and is slidably passed through the length adjustment holes of the two sliding plates. The connecting rod is provided with a roller placed between the two support plates, which is used to allow the roller to roll vertically along the fixed pressure plate and the sealing pressure plate when the sliding plate slides relative to the support plate.

3. The pipe connection device for preventing damage due to differential settlement according to claim 1, characterized in that, The length adjustment hole is a waist-shaped hole.

4. The pipe connection device for preventing damage due to differential settlement according to any one of claims 1 to 3, characterized in that, The fixed pressure plate and the sealing pressure plate are spaced apart, and a water-stop sealing ring is provided between the fixed pressure plate and the sealing pressure plate for fitting around the outer ring of the pipe for resealing.

5. The pipe connection device for preventing damage due to differential settlement according to claim 4, characterized in that, A protective shell is provided along the outer circumference of the fixed pressure plate and the sealing pressure plate to prevent backfill soil from filling into the fixed pressure plate and the sealing pressure plate.

6. The pipe connection device for preventing damage due to differential settlement according to claim 4, characterized in that, The sealing plate is also provided with a top pressure flange, which is used to apply extrusion pressure to the water-stop sealing ring to compact the water-stop sealing ring.

7. The pipe connection device for preventing damage due to differential settlement according to claim 6, characterized in that, A pressure cylinder is provided on one side of the pressure flange, which extends from the pipe hole of the sealing pressure plate to the space between the sealing pressure plate and the fixed pressure plate to apply pressure to the water-stop sealing ring and protect the pipeline.

8. A method for pipe connection to prevent damage from differential settlement, characterized in that, The protection provided by the pipe connection device for preventing damage due to differential settlement as described in any one of claims 1 to 7 includes the following steps: The pipe passes sequentially through the concrete structure of the pipe connection device, the embedded sleeve, the fixing pressure plate, the water-stop sealing ring, and the sealing pressure plate. After the pipe extends beyond the sealing plate, the top pressure flange is fitted on and connected to the sealing plate of the pipe connection device. The water-stop sealing ring is then compacted by the top pressure flange. A protective shell is installed between the fixed pressure plate and the sealing pressure plate of the pipe connection device to protect the components between the fixed pressure plate and the sealing pressure plate; First, wrap the top pressure flange with plastic film, and then backfill the area around the pipe connection device with medium-coarse sand and compact it manually.

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