A front-positioned pipe jacking hole water stop device

Abstract

The utility model relates to water stop device technical field, concretely is a kind of front pipe hole water stop device. Front pipe hole water stop device includes the sealing assembly being arranged in the outside of pipe shaft, the outside of sealing assembly is detachably equipped with connecting piece, connecting piece includes first connecting part and second connecting part, first connecting part is arranged in the outside of sealing assembly, second connecting part is arranged on first connecting part perpendicularly, at least two places of second connecting part extend to the direction parallel to pipe shaft top surface and form fixed part, water stop ring is equipped on each fixed part, water stop ring is detachably arranged on fixed part by fixed assembly. By the setting of sealing assembly, better sealing effect is achieved. In addition, the outside of sealing assembly is also equipped with connecting piece, at least two fixed parts are provided on the second connecting part of connecting piece, and water stop ring is mounted on each fixed part, so as to achieve double-layer water stop effect, and the water stop effect is improved while being convenient to disassemble and assemble.

Description

Technical Field

[0001] This utility model relates to the technical field of water-stopping devices, specifically a front-mounted water-stopping device for jacking pipe openings. Background Technology

[0002] Before the construction of a pipe jacking project, a water-stopping device needs to be installed at the opening of the pipe jacking well to prevent groundwater from flowing into the working well during the pipe jacking process. However, the installation and fixing process of traditional water-stopping devices is relatively complicated. The surface where it contacts the well wall needs to be reinforced with steel bars and concrete poured for fixation. The installation and disassembly are time-consuming and seriously affect the construction efficiency. In addition, the water-stopping rubber ring of traditional water-stopping devices is usually only a single layer, which is easily damaged and has poor water-stopping effect. Utility Model Content

[0003] The purpose of this utility model is to propose a pre-installed pipe jacking opening water-stopping device, which aims to solve the technical problems of existing water-stopping devices requiring reinforcement and concrete pouring for fixing to the well wall, resulting in long installation and disassembly times; and existing water-stopping devices only have a single layer of water-stopping rubber ring, which is easily damaged during use and has poor water-stopping effect.

[0004] To achieve the above objectives, this utility model proposes a pre-installed pipe jacking well water-stopping device, including a sealing component, which is disposed on the outside of the pipe jacking well.

[0005] The sealing assembly is detachably provided with a connector on its outer side. The connector includes a first connecting part and a second connecting part. The first connecting part is parallel to the top surface of the jacking well and is located on the outer side of the sealing assembly. The annular second connecting part is vertically arranged on the first connecting part. Along the height direction of the second connecting part, at least two points of the second connecting part extend in a direction parallel to the top surface of the jacking well to form a fixing part. Each fixing part is provided with a water-stop ring. The water-stop ring is detachably arranged on the fixing part through the fixing assembly.

[0006] Preferably, the sealing assembly includes a pre-embedded bolt, a first fixing bolt, and a sealing ring. A plurality of the pre-embedded bolts are disposed inside the jacking manhole, and the sealing ring is attached to the outside of the jacking manhole by a plurality of first fixing bolts. The first fixing bolts are sequentially connected to the first connecting part, the sealing ring, and the pre-embedded bolts.

[0007] Preferably, the fixing component includes a pressure plate and a second fixing bolt. The pressure plate is located above the fixing part, and a fixing space is provided between the pressure plate and the fixing part. One end of the water-stop ring is clamped in the fixing space. The second fixing bolt connects the pressure plate, the water-stop ring and the fixing part in sequence. The orthographic projection of the end of the water-stop ring is located inside the opening of the jacking well.

[0008] Preferably, the fixing part includes a first fixing part and a second fixing part, the middle part of the second connecting part extends horizontally towards the side closer to the opening to form the first fixing part, and the top end of the second connecting part extends horizontally towards the side away from the opening to form the second fixing part.

[0009] Preferably, a stiffening plate is provided between the bottom end of the second fixing part and the first connecting part.

[0010] Preferably, the first fixing part is provided with one of the water-stop rings, and the second fixing part is provided with another water-stop ring;

[0011] The length of the water-stop ring on the second fixing part is greater than the length of the water-stop ring on the first fixing part, so that on the orthographic projection plane, the length by which the end of the water-stop ring on the second fixing part extends into the opening is equal to the length by which the end of the water-stop ring on the first fixing part extends into the opening.

[0012] Preferably, the bottom end of the second connecting part has a clearance with the edge of the first connecting part, so that the end of the fixing part and the end of the pressure plate are both located on the extension line of the inner wall of the jacking well.

[0013] Preferably, the fixing head at the top of the pre-embedded bolt is conical, and the outer diameter of the fixing head gradually increases from the inside to the outside.

[0014] Preferably, the sealing ring and the water-stop ring are made of rubber.

[0015] Preferably, the connector is a steel plate.

[0016] The pre-installed pipe jacking wellhead water-stopping device disclosed in this utility model has the following beneficial effects: by tightly fitting and fixing the sealing component to the outside of the well wall of the pipe jacking well, it achieves a better sealing effect; at the same time, a connector is also provided on the outside of the sealing component, and the second connecting part of the connector is provided with at least two fixing parts, and a water-stopping ring is installed on each fixing part, which can achieve double or multi-layer water-stopping effect. It is convenient to disassemble and assemble, and the water-stopping effect is improved, thereby improving the safety of pipe jacking construction. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the pre-positioned pipe jacking opening water-stopping device of this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the pre-installed pipe jacking opening water-stopping device of this utility model.

[0020] In the attached diagram: 1-Sealing component, 11-Embedded bolt, 111-Fixing head, 12-First fixing bolt, 13-Sealing ring, 2-Jack pipe well, 21-Opening, 3-Connector, 31-First connecting part, 32-Second connecting part, 33-Fixing part, 331-First fixing part, 332-Second fixing part, 34-Reinforcing plate, 35-Allowing space, 4-Waterstop ring, 5-Fixing component, 51-Pressure plate, 52-Second fixing bolt.

[0021] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0024] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] like Figures 1 to 2 As shown, a pre-installed pipe jacking well water-stopping device includes a sealing component 1, which is disposed on the outside of the pipe jacking well 2.

[0026] The sealing assembly 1 is detachably provided with a connector 3 on its outer side. The connector 3 includes a first connecting part 31 and a second connecting part 32. The first connecting part 31 is parallel to the top surface of the jacking well 2 and is located on the outer side of the sealing assembly 1. The annular second connecting part 32 is vertically arranged on the first connecting part 31. Along the height direction of the second connecting part 32, at least two points of the second connecting part 32 extend in a direction parallel to the top surface of the jacking well 2 to form a fixing part 33. Each fixing part 33 is provided with a water-stop ring 4. The water-stop ring 4 is detachably arranged on the fixing part 33 through a fixing assembly 5.

[0027] In this design, the sealing component 1 is tightly fitted and fixed to the outer side of the well wall of the jacking well 2, achieving a good sealing effect and avoiding the need for rebar installation and concrete pouring at the bonding surface. Simultaneously, a connector 3 is provided on the outer side of the sealing component 1. The connector 3 includes a first connecting part 31 and an annular second connecting part 32. Steel fixing parts 33 are welded to at least two positions on the second connecting part 32, and each fixing part 33 is equipped with a water-stop ring 4, meaning at least two water-stop rings 4 are provided, achieving a double or multi-layer water-stopping effect. Practical verification has shown that the sealing component 1 and water-stop rings 4 in this pre-installed jacking well water-stopping device are easy to assemble and disassemble, significantly improving the construction efficiency and turnover rate of the device, while simultaneously enhancing the water-stopping effect and improving the safety of the jacking project construction.

[0028] Furthermore, the sealing assembly 1 includes a pre-embedded bolt 11, a first fixing bolt 12, and a sealing ring 13. A plurality of the pre-embedded bolts 11 are disposed inside the jacking well 2, and the sealing ring 13 is attached to the outside of the jacking well 2 by a plurality of first fixing bolts 12. The first fixing bolts 12 are sequentially connected to the first connecting part 31, the sealing ring 13, and the pre-embedded bolts 11.

[0029] In this embodiment, pre-embedded bolts 11 are pre-embedded inside the concrete jacking shaft 2. A sealing ring 13 is fixed to the first connecting part 31 of the connector 3 via a first fixing bolt 12. The end of the first fixing bolt 12 is fixed to the pre-embedded bolt 11. The sealing ring 13, located outside the opening 21, is tightly fitted to the jacking pipe, providing a good sealing effect. Specifically, a hole is pre-drilled on the surface of the first connecting part 31, and each hole can be fixed to a pre-embedded tapered screw via the first fixing bolt 12.

[0030] Furthermore, the fixing component 5 includes a pressure plate 51 and a second fixing bolt 52. The pressure plate 51 is located above the fixing part 33, and a fixing space is provided between the pressure plate 51 and the fixing part 33. One end of the water-stop ring 4 is clamped in the fixing space. The second fixing bolt 52 connects the pressure plate 51, the water-stop ring 4 and the fixing part 33 in sequence. The orthographic projection of the end of the water-stop ring 4 is located in the opening 21 of the jacking well 2.

[0031] In this embodiment, the pressure plate 51, the water-stop ring 4, and the fixing part 33 are detachably fixed by the second fixing bolt 52. The first end of the water-stop ring 4 is fixed in the fixing space between the pressure plate 51 and the fixing part 33, and the end of the water-stop ring 4 is located in front of the opening 21 of the jacking pipe well 2 and is in close contact with the outer wall of the jacking pipe, which has a good water-stopping effect.

[0032] Furthermore, the fixing part 33 includes a first fixing part 331 and a second fixing part 332. The middle part of the second connecting part 32 extends horizontally towards the side close to the opening 21 to form the first fixing part 331, and the top end of the second connecting part 32 extends horizontally away from the opening 21 to form the second fixing part 332. The first fixing part 331 and the second fixing part 332 are both provided with the water-stop ring 4.

[0033] In this embodiment, the first fixing part 331 and the second fixing part 332 are arranged in opposite directions, which can enhance the overall stability and optimize the force transmission. The first fixing part 331 and the second fixing part 332 form a two-way spatial constraint, effectively balancing the internal pressure, making the structural stress distribution more uniform, and reducing the deformation of the second connecting part 32.

[0034] Specifically, the first fixing part 331 is composed of multiple fixing plates arranged at intervals. All fixing plates are located in the middle of the second connecting part 32, and the first water-stop ring 4 is fixed simultaneously by the multiple fixing plates. Similarly, the second fixing part 332 is also composed of multiple fixing plates arranged at intervals. The fixing plates of the second fixing part 332 are all located at the top of the second connecting part 32, and the second water-stop ring 4 is fixed simultaneously by the multiple fixing plates.

[0035] Furthermore, a stiffening plate 34 is provided between the bottom end of the second fixing part 332 and the first connecting part 31. Specifically, the stiffening plate 34 can enhance the overall structural rigidity, effectively transfer the load between the second fixing part 332 and the first connecting part 31 and disperse the stress, and prevent deformation at the connection between the second fixing part 332 and the second connecting part 32.

[0036] Furthermore, the first fixing part 331 is provided with a water-stop ring 4, and the second fixing part 332 is provided with another water-stop ring 4;

[0037] The length of the water-stop ring 4 on the second fixing part 332 is greater than the length of the water-stop ring 4 on the first fixing part 331, so that on the orthographic projection plane, the length of the end of the water-stop ring 4 on the second fixing part 332 and the length of the end of the water-stop ring 4 on the first fixing part 331 extending into the opening 21 are equal.

[0038] In this embodiment, the water-stop ring 4 on the upper second fixing part 332 is longer, so that the two water-stop rings 4 distributed at the top and bottom extend to the opening 21 of the jacking pipe well 2 by the same length, which can better fit with the jacking pipe and have a better water-stopping effect.

[0039] Furthermore, the bottom end of the second connecting part 32 has a clearance 35 with the edge of the first connecting part 31, so that the end of the fixing part 33 and the end of the pressure plate 51 are both located on the extension line of the inner wall of the jacking well 2.

[0040] In this embodiment, the second connecting part 32 is disposed at the end of the first connecting part 31 near the opening 21, and the second connecting part 32 and the first connecting part 31 are also provided with a clearance 35. The clearance 35 is mainly used to set the fixing part 33 so that the fixing part 33 will not extend into the opening 21 of the jacking well 2, thus avoiding affecting the entry and exit construction of the jacking pipe. Similarly, the length of the pressure plate 51 is appropriate and will not extend into the opening 21 of the jacking well 2, thus avoiding affecting the entry and exit construction of the jacking pipe.

[0041] Furthermore, the fixing head 111 at the top of the pre-embedded bolt 11 is conical, and the outer diameter of the fixing head 111 gradually increases from the inside to the outside.

[0042] In this embodiment, the fixing head 111 at the top of the pre-embedded bolt 11 is designed as a cone, which can enhance the anchoring effect and increase the contact area. The cone structure forms a reverse wedge-shaped engagement with the concrete jacking well 2, and the pull-out resistance is increased by 1.5-2 times compared with the flat head bolt, which is especially suitable for dynamic water pressure impact in pipe jacking construction.

[0043] Furthermore, the sealing ring 13 and the water-stop ring 4 are made of rubber. Specifically, the rubber sealing ring 13 and water-stop ring 4 have excellent softness and resilience, allowing them to fit tightly against the contact surface of the jacking pipe for continuous sealing; at the same time, they can generate radial and axial deformation under pressure, both filling gaps and maintaining resilience to adapt to pipe displacement or vibration; the rubber sealing ring 13 and water-stop ring 4 can also resist the erosion of water, silt, and weak chemical media for a long time, avoiding scratches on pipes or steel plates and extending the overall service life.

[0044] Furthermore, the connector 3 is a steel plate. Specifically, the material of the connector 3 can be a steel plate made of Q steel, which has excellent mechanical properties and can withstand the high pressure, vibration, and impact loads during pipe jacking construction, ensuring the firm fixation of the sealing component 1 and the waterstop ring 4, and preventing deformation or loosening. It also has the advantages of corrosion resistance and aging resistance, maintaining structural integrity even after long-term service, and is suitable for underground humid or chemically corrosive environments. Moreover, steel plates are easily processed into complex shapes through welding, drilling, stamping, and other processes, resulting in lower costs and facilitating the integration of bolt holes and other structures, making them suitable for large-scale engineering applications.

[0045] The basic operation procedure for installing the pre-installed pipe jacking well water-stopping device is as follows: First, before pouring concrete in the pipe jacking well 2, accurately position and fix the pre-embedded bolts 11 inside. Check that the connectors 3, sealing rings 13, water-stopping rings 4, and stiffening plates 34 are complete and without defects. Position the first water-stopping ring 4. After positioning, install the corresponding pressure plate 51 and the second fixing bolt 52. After installation, install the outer second water-stopping ring 4 in the same steps. After the water-stopping ring 4 is assembled, use a truck crane to lift the device to the installation position. Use the first fixing bolt 12 to connect and fix the connectors 3, sealing rings 13, and pre-embedded bolts.

[0046] After the pipe jacking construction is completed, the first fixing bolt 12 is removed, and the entire device is lifted out by a truck crane. It is cleaned and maintained in a timely manner, and the damaged waterstop ring 4 is replaced if necessary, and then transferred to the next construction site.

[0047] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A pre-installed pipe jacking inlet water-stopping device, characterized in that, Includes a sealing assembly (1), which is disposed on the outside of the jacking well (2); The sealing assembly (1) is detachably provided with a connector (3) on its outer side. The connector (3) includes a first connecting part (31) and a second connecting part (32). The first connecting part (31) is parallel to the top surface of the jacking well (2) and is located on the outer side of the sealing assembly (1). The annular second connecting part (32) is vertically arranged on the first connecting part (31). Along the height direction of the second connecting part (32), at least two of the second connecting part (32) extend in a direction parallel to the top surface of the jacking well (2) to form a fixing part (33), and each fixing part (33) is provided with a water-stop ring (4), which is detachably mounted on the fixing part (33) by means of a fixing component (5).

2. The pre-installed pipe jacking inlet water-stopping device according to claim 1, characterized in that, The sealing assembly (1) includes a pre-embedded bolt (11), a first fixing bolt (12), and a sealing ring (13). A plurality of the pre-embedded bolts (11) are disposed inside the jacking well (2). The sealing ring (13) is attached to the outside of the jacking well (2) by a plurality of first fixing bolts (12). The first fixing bolts (12) are sequentially connected to the first connecting part (31), the sealing ring (13), and the pre-embedded bolts (11).

3. A pre-installed pipe jacking inlet water-stopping device according to claim 2, characterized in that, The fixing component (5) includes a pressure plate (51) and a second fixing bolt (52). The pressure plate (51) is located above the fixing part (33), and a fixing space is provided between the pressure plate (51) and the fixing part (33). One end of the water-stop ring (4) is clamped in the fixing space. The second fixing bolt (52) connects the pressure plate (51), the water-stop ring (4) and the fixing part (33) in sequence. The orthographic projection of the end of the water-stop ring (4) is located in the opening (21) of the jacking well (2).

4. A pre-installed pipe jacking inlet water-stopping device according to claim 3, characterized in that, The fixing part (33) includes a first fixing part (331) and a second fixing part (332). The middle part of the second connecting part (32) extends horizontally towards the side close to the opening (21) to form the first fixing part (331), and the top end of the second connecting part (32) extends horizontally towards the side away from the opening (21) to form the second fixing part (332).

5. A pre-installed pipe jacking inlet water-stopping device according to claim 4, characterized in that, A stiffening plate (34) is also provided between the bottom end of the second fixing part (332) and the first connecting part (31).

6. A pre-installed pipe jacking inlet water-stopping device according to claim 4, characterized in that, The first fixing part (331) is provided with a water-stop ring (4), and the second fixing part (332) is provided with another water-stop ring (4). The length of the water-stop ring (4) on the second fixing part (332) is greater than the length of the water-stop ring (4) on the first fixing part (331), so that on the orthographic projection plane, the length of the end of the water-stop ring (4) on the second fixing part (332) and the length of the end of the water-stop ring (4) on the first fixing part (331) extending into the opening (21) are equal.

7. A pre-installed pipe jacking inlet water-stopping device according to claim 6, characterized in that, The bottom end of the second connecting part (32) has a clearance (35) with the edge of the first connecting part (31), so that the end of the fixing part (33) and the end of the pressure plate (51) are both located on the extension line of the inner wall of the jacking well (2).

8. A pre-installed pipe jacking inlet sealing device according to claim 2, characterized in that, The fixing head (111) at the top of the pre-embedded bolt (11) is conical, and the outer diameter of the fixing head (111) gradually increases from the inside to the outside.

9. A pre-installed pipe jacking inlet water-stopping device according to claim 3, characterized in that, The sealing ring (13) and the water-stopping ring (4) are made of rubber.

10. A pre-installed pipe jacking inlet water-stopping device according to claim 1, characterized in that, The connector (3) is a steel plate.

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