Hole opening water stopping device for pipe jacking engineering
The automatic lifting and insertion of the water-stop pad into the opening is achieved through a rotating screw and support rod structure driven by a power motor, in conjunction with an electric push rod and a hydraulic rod. This solves the problem of low installation efficiency of water-stop devices at the opening in existing pipe jacking projects, improves construction efficiency, and reduces labor intensity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE SECOND CONSTRUCTION CO LTD OF CHINA CONSTRUCTION THIRD ENGINEERING BUREAU
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-12
AI Technical Summary
In existing pipe jacking projects, the installation efficiency of the water-stopping device at the opening is low and requires a large amount of labor. The water-stopping pad is not suitable for all openings and needs to be installed by hammering. In addition, it is heavy and affects the construction efficiency.
The structure employs a rotating screw and support rod driven by a power motor, along with an electric push rod and a hydraulic rod, to achieve automatic lifting and insertion of the water-stop pad into the opening. Sealing is achieved by pushing with a ring push plate, reducing manual labor.
It improves the applicability and installation efficiency of water sealing at openings, reduces labor intensity, and increases construction efficiency.
Smart Images

Figure CN224229418U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunnel opening water sealing technology, and in particular to a tunnel opening water sealing device for pipe jacking projects. Background Technology
[0002] Pipe jacking is a trenchless construction method, a technology for laying pipelines without excavation or with minimal excavation. In pipe jacking, the jacking force generated by the jacking equipment in the working pit overcomes the friction between the pipeline and the surrounding soil, pushing the pipeline into the soil at the designed slope, and then removing the excavated soil. After one section of the pipe is pushed into the soil, the second section is pushed in to continue jacking. The principle is to use the thrust of the main jacking cylinder and the pipeline and intermediate stations to push the tool pipe or tunneling machine from the working pit through the soil layer all the way to the receiving pit and lift it out. The pipeline follows the tool pipe or tunneling machine and is buried between the two pits.
[0003] Currently, in pipe jacking projects, a water-stopping device is needed to stop the water flowing out of the opening. Existing water-stopping methods mainly involve filling the inside with a suitable water-stopping pad. However, since the size of the water-stopping pad is relatively fixed, it is not suitable for all openings. In addition, it requires auxiliary hammering to install the water-stopping pad. Furthermore, the water-stopping pad has a certain weight, and raising the water-stopping pad to a certain height for installation requires a large amount of labor and reduces construction efficiency. Therefore, we propose a water-stopping device for pipe jacking projects to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to provide a water-stopping device for the opening of a pipe jacking project, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A water-stopping device for pipe jacking projects includes a base plate. A lifting assembly is connected to one side of the base plate. The lifting assembly includes a mounting plate. The inner bottom wall and the inner top wall of the mounting plate are connected to bearing seats. The inner rings of the two bearing seats are connected to a rotating screw. One end of the rotating screw is connected to a power motor. A support rod is threadedly connected to the outer surface of the rotating screw. A water-stopping assembly is connected to one side of the support rod. The water-stopping assembly includes a set of vertical plates. A hydraulic rod is embedded in one side of each vertical plate. One end of the set of hydraulic rods is connected to an annular push plate. An electric push rod is embedded in one side of the support rod. One end of the electric push rod is connected to a T-shaped slide rod. A water-stopping pad is slidably connected to the outer surface of the T-shaped slide rod.
[0007] In a further embodiment, a control display screen is connected to one side of the mounting plate, and a storage battery is installed on one side of the mounting plate.
[0008] In a further embodiment, a reinforcing block is connected to one side of the mounting plate, and one side of the reinforcing block is connected to one side of the base plate.
[0009] In a further embodiment, a set of insertion holes is provided on one side of the base plate, and a set of fixing screws is provided on one side of the mounting plate, each fixing screw being adapted to the insertion hole.
[0010] In a further embodiment, a set of self-locking casters is connected to one side of the base plate, and the outer surface of the support rod is slidably connected to the inner wall of the mounting plate.
[0011] In a further embodiment, one side of the power motor is connected to one side of the mounting plate, and the water-stop pad is funnel-shaped.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. This device uses the rotation of a power motor to drive a rotating screw to rotate within the inner ring of the bearing housing. It is connected to the rotating screw by a threaded support rod, which can lift the support rod and the water-stop pad to a specified height, thus avoiding the need for manual handling and excessive labor.
[0014] 2: This device uses the pushing force of an electric push rod to insert a T-shaped sliding rod into the opening, allowing the water-stop pad to contact the opening and its small end to be inserted into the opening. Combined with the pushing force of a hydraulic rod and the sliding connection between the water-stop pad and the T-shaped sliding rod, it enables the annular push plate to insert the water-stop pad of the appropriate size into the opening and seal it. This not only improves the applicability of water-stopping openings but also reduces the amount of labor required. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the base plate in a water-stopping device for pipe jacking projects.
[0016] Figure 2 This is a front sectional view of the mounting plate in the water-stopping device for pipe jacking projects.
[0017] Figure 3 This is a side view of the mounting plate in the water-stopping device for pipe jacking projects.
[0018] Figure 4 This is a rear view of the mounting plate in the water-stopping device for pipe jacking projects.
[0019] In the diagram: 1. Base plate; 2. Lifting assembly; 201. Mounting plate; 202. Bearing seat; 203. Rotating screw; 204. Power motor; 205. Support rod; 3. Water-stopping assembly; 301. Vertical plate; 302. Hydraulic rod; 303. Circular push plate; 304. Electric push rod; 305. T-shaped slide rod; 306. Water-stopping pad; 4. Control display screen; 5. Battery; 6. Reinforcing block; 7. Self-locking caster; 8. Insertion hole; 9. Fixing screw. Detailed Implementation
[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., 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. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0021] In the description of this utility model, it should be noted that, 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 mechanical connection or an electrical 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 utility model based on the specific circumstances.
[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] like Figures 1 to 4As shown in the figure, a water-stopping device for a pipe jacking project includes a base plate 1. A lifting assembly 2 is connected to one side of the base plate 1. The lifting assembly 2 includes a mounting plate 201. The inner bottom wall and the inner top wall of the mounting plate 201 are connected to a bearing seat 202. The inner rings of the two bearing seats 202 are connected to a rotating screw 203. One end of the rotating screw 203 is connected to a power motor 204. A support rod 205 is threaded onto the outer surface of the rotating screw 203. A water-stopping assembly 3 is connected to one side of the support rod 205. The water-stopping assembly 3 includes a set of vertical plates 301. A hydraulic rod 302 is embedded on one side of each vertical plate 301. One end of the set of hydraulic rods 302 is connected to an annular push plate 303. An electric push rod 304 is embedded on one side of the support rod 205. One end of the electric push rod 304 is connected to a T-shaped slide rod 305. A water-stop pad 306 is slidably connected to the outer surface of 305. The rotation of the power motor 204 can drive the rotating screw 203 to rotate in the inner ring of the bearing seat 202. The support rod 205 is threadedly connected to the rotating screw 203, which can drive the support rod 205 and the water-stop pad 306 to a specified height, avoiding the situation where the amount of manual handling is too large. The pushing force of the electric push rod 304 can make the T-shaped slide rod 305 insert into the opening, and make the water-stop pad 306 contact the opening, and make the small end of the water-stop pad 306 insert into the opening. With the pushing force of the hydraulic rod 302 and the sliding connection between the water-stop pad 306 and the T-shaped slide rod 305, the annular push plate 303 can insert the water-stop pad 306 of appropriate size into the opening and seal it. This not only improves the applicability of the opening water-stopping, but also reduces the amount of labor.
[0024] Furthermore, a control display screen 4 is connected to one side of the mounting plate 201, and a storage battery 5 is installed on the other side of the mounting plate 201. Using the control display screen 4 and the storage battery 5, the electrical components of the device can be easily controlled and powered. A reinforcing block 6 is connected to one side of the mounting plate 201, and one side of the reinforcing block 6 is connected to one side of the base plate 1. Using the reinforcing block 6, the connection between the mounting plate 201 and the base plate 1 can be strengthened, preventing breakage. A set of insertion holes 8 is provided on one side of the base plate 1, and a set of fixing screws 9 is provided on one side of the mounting plate 201. Each fixing screw 9 is adapted to the insertion hole 8. Using the fixing screws 9 and the insertion hole 8, the base plate 1 can be easily installed to the foundation, preventing it from tipping over.
[0025] Furthermore, a set of self-locking moving wheels 7 are connected to one side of the base plate 1, and the outer surface of the support rod 205 is slidably connected to the inner wall of the mounting plate 201. The self-locking moving wheels 7 can be used to easily move the equipment to the place of use. One side of the power motor 204 is connected to one side of the mounting plate 201, and the water-stop pad 306 is funnel-shaped, which improves the applicability of the equipment for water-stopping holes.
[0026] The working principle of this utility model is as follows: First, the self-locking moving wheel 7 is used to move it to the location of use, and the electrical components are connected to the power supply. Then, as needed, the base plate 1 is fixed to the foundation using the socket 8 and fixing screws 9. Simultaneously, the external control display screen 4 is pressed to start the power motor 204. The rotation of the power motor 204 causes the rotating screw 203 to rotate within the inner ring of the bearing seat 202. Subsequently, the rotating screw 203 is threadedly connected to the support rod 205, and the support rod 205 is slidably connected to the mounting plate 201, which enables it to drive... The water-stop pad 306 is raised to the level of the opening, and the electric push rod 304 is activated. The pushing force of the electric push rod 304 allows the small end of the T-shaped slide rod 305 and the water-stop pad 306 to be inserted into the opening. At the same time, the hydraulic rod 302 is activated. The pushing force of the hydraulic rod 302, together with the sliding connection between the T-shaped slide rod 305 and the water-stop pad 306, allows the annular push plate 303 to push the water-stop pad 306 to the appropriate position to be inserted into the opening, thereby sealing the opening. The above is the complete usage process of this utility model.
[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A water-stopping device for tunnel openings in pipe jacking projects, characterized in that: The system includes a base plate (1), one side of which is connected to a lifting assembly (2). The lifting assembly (2) includes a mounting plate (201). The inner bottom wall and the inner top wall of the mounting plate (201) are connected to a bearing seat (202). The inner rings of the two bearing seats (202) are connected to a rotating screw (203). One end of the rotating screw (203) is connected to a power motor (204). The outer surface of the rotating screw (203) is threaded with a support rod (205). (205) has a water-stop component (3) connected to one side. The water-stop component (3) includes a set of upright plates (301). Each upright plate (301) has a hydraulic rod (302) embedded on one side. One end of the set of hydraulic rods (302) is connected to an annular push plate (303). One side of the support rod (205) has an electric push rod (304) embedded. One end of the electric push rod (304) is connected to a T-shaped slide rod (305). A water-stop pad (306) is slidably connected to the outer surface of the T-shaped slide rod (305).
2. The water-stopping device for pipe jacking projects according to claim 1, characterized in that: A control display screen (4) is connected to one side of the mounting plate (201), and a storage battery (5) is installed on one side of the mounting plate (201).
3. A water-stopping device for pipe jacking projects according to claim 1, characterized in that: A reinforcing block (6) is connected to one side of the mounting plate (201), and one side of the reinforcing block (6) is connected to one side of the base plate (1).
4. A water-stopping device for pipe jacking projects according to claim 1, characterized in that: A set of insertion holes (8) is provided on one side of the base plate (1), and a set of fixing screws (9) is provided on one side of the mounting plate (201), each fixing screw (9) being adapted to the insertion hole (8).
5. A water-stopping device for tunnel openings in pipe jacking projects according to claim 1, characterized in that: A set of self-locking moving wheels (7) is connected to one side of the base plate (1), and the outer surface of the support rod (205) is slidably connected to the inner wall of the mounting plate (201).
6. A water-stopping device for tunnel openings in pipe jacking projects according to claim 1, characterized in that: One side of the power motor (204) is connected to one side of the mounting plate (201), and the water-stop pad (306) is funnel-shaped.