Pipe jacking construction hole opening water stopping device

Abstract

The utility model discloses a pipe jacking construction hole water stop device, which belongs to the field of pipe jacking construction and comprises a steel ring body inserted in a hole, an outer water stop ring is sleeved on the outer side wall of the steel ring body, a sand blocking ring is fixed on one side of the steel ring body positioned at the hole, and an avoiding ring groove is concavely arranged on the inner wall of the sand blocking ring; the adjusting ring assembly is arranged in the receding ring groove, an arc-shaped groove is formed in each arc-shaped steel plate shell, the two ends of each arc-shaped inner plate are inserted into the two adjacent arc-shaped grooves respectively, the two ends of each arc-shaped inner plate are each fixedly provided with a positioning sliding block, and the positioning sliding blocks are connected into the arc-shaped grooves in a sliding mode to form an adjusting ring; the inner water stop ring is mounted on the inner wall of the adjusting ring; the multiple elastic adjusting structures correspond to the multiple arc-shaped steel plate shells in a one-to-one mode, and each elastic adjusting structure is arranged between the outer side wall of the corresponding arc-shaped steel plate shell and the sand blocking ring. The inner water stop ring can automatically adapt to pipelines of different sizes through the adjusting ring, and compared with the prior art, the inner water stop ring is more convenient to operate and use and higher in pipe jacking construction efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe jacking construction, in particular to a water-stopping device for a pipe jacking construction hole. Background Art

[0002] Pipe jacking construction is a trenchless construction method and a pipeline burial construction technology that does not involve excavation or requires little excavation. Pipe jacking construction is to use the jacking force generated by the jacking equipment in the working pit to overcome the friction between the pipeline and the surrounding soil, jack the pipeline into the soil according to the designed slope, and transport the soil away. After one section of the pipe is pushed into the soil layer, the second section of the pipe is pushed in. Under the conditions of thick sand layers and abundant groundwater, the success or failure of the water-stopping and sand-stopping system at the hole plays a decisive role in the pipe jacking construction. Once the water-stopping and sand-stopping systems at the hole fail, serious consequences will occur. In the mildest case, water will enter the working well and the electrical equipment of the pipe jacking machine head will be damaged. In the severest case, soil particles near the pipeline will flow into the working well with the water flow, the road surface will collapse, the pipeline will sink, and major safety accidents such as project investment failure and casualties will occur. Therefore, water-stopping and sand-stopping at the hole mouth of the pipe jacking well have become the focus and difficulty of the process.

[0003] The announcement number CN114753869A discloses a water-stop device for a reserved hole in a caisson and a method for using the device. The device is mainly composed of a steel ring plate, an upper clamp, a lower clamp, a rubber water-stop ring, a rubber sealing ring, a notch, a fastening bolt and a limit bolt. The main function is to solve the problem of water seepage in the gap between the reserved hole in the caisson and the pipe wall, and mud and mud pouring into the well during the top pipe construction process. The device first embeds a steel ring plate before pouring the caisson. There is a reserved notch on the steel ring plate. The upper and lower clamps can move during the tightening process to ensure that the clamp is tightly compacted around the pipe wall. The side wall of the clamp and the steel ring plate, and the inner side of the clamp and the pipe wall are respectively sealed by a rubber sealing ring and a rubber water-stop ring, and are all fastened and fixed by bolts. It is easy to install and ensures the sealing of the contact parts. Compared with other methods, the device has more advantages in terms of sealing, water stopping, plugging, and simple use. However, the device needs to remove the bolts each time to adjust the circumferential size of the clamp according to the pipe size to meet the use of pipes of different sizes. The adjustment method is relatively cumbersome and affects the use efficiency. Utility Model Content

[0004] The utility model aims to provide a water-stopping device for a hole in a jacking pipe construction, so as to solve the problems of troublesome bolt disassembly and low use efficiency proposed in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a water-stopping device for a jacking pipe construction hole, comprising:

[0006] A steel ring body can be inserted into the hole, an outer wall of the steel ring body is sleeved with an outer water stop ring, a sand retaining ring is fixed to the steel ring body at one side of the hole, and an avoidance ring groove is recessed on the inner wall of the sand retaining ring;

[0007] An adjusting ring assembly is arranged in the avoidance ring groove, and the adjusting ring assembly includes a plurality of arc-shaped steel plate shells, a plurality of arc-shaped inner plates and a plurality of positioning slide blocks. An arc-shaped groove is arranged in each of the arc-shaped steel plate shells, and the two ends of each of the arc-shaped inner plates are respectively inserted in two adjacent arc-shaped grooves. A positioning slide block is respectively fixed at the two ends of the arc-shaped inner plates, and the positioning slide block is slidably connected in the arc-shaped groove, so that the plurality of arc-shaped steel plate shells and the plurality of arc-shaped inner plates are sequentially connected to form an adjusting ring;

[0008] An inner water stop ring is installed on the inner wall of the adjusting ring; and

[0009] A plurality of elastic adjustment structures correspond one to one with the plurality of arc-shaped steel plate shells, and each of the elastic adjustment structures is arranged between the outer side wall of the arc-shaped steel plate shell and the sand retaining ring.

[0010] Furthermore, the sand retaining ring is provided with a plurality of mounting grooves at equal intervals in the circumferential direction, the mounting grooves are connected with the avoidance ring grooves, and the plurality of elastic adjustment structures correspond to the mounting grooves one by one.

[0011] Furthermore, the elastic adjustment structure comprises:

[0012] A telescopic rod, fixed in the mounting groove;

[0013] A slide plate, fixed to the movable end of the telescopic rod, the slide plate being slidably connected to the inner wall of the mounting groove;

[0014] a spring, sleeved outside the telescopic rod, with two ends of the spring abutting against the bottom wall of the mounting slot and the slide plate; and,

[0015] A moving rod, two ends of which are respectively connected to the slide plate and the arc-shaped steel plate shell.

[0016] Furthermore, the telescopic rod includes a fixed rod and a movable rod, a slide groove is provided in the fixed rod, a rubber block is provided at one end of the movable rod, the rubber block is slidably arranged in the slide groove, and the other end of the movable rod is a movable end.

[0017] Furthermore, the side wall of the installation groove is provided with a through hole communicating with the avoidance ring groove for the moving rod to pass through;

[0018] The notch of the installation groove is arranged on the front side wall of the sand retaining ring, and a ring cover is fixed at the notch of the installation groove by a fastener.

[0019] Furthermore, the supporting materials of the outer water stop ring and the inner water stop ring are both made of elastic rubber.

[0020] Furthermore, the arc-shaped steel plate shell and the inner water stop ring are fixedly connected by fastening bolts.

[0021] Furthermore, the outer surfaces of the steel ring body and the sand retaining ring are provided with a galvanized anti-corrosion layer.

[0022] Compared with the prior art, the utility model has the following beneficial effects: when the jacking pipe is inserted into the sand retaining ring, the jacking pipe passes through the inner water stop ring, and the inner water stop ring is squeezed and expanded by the jacking pipe, at which time the arc-shaped steel plate shell and the arc-shaped inner plate are relatively displaced, and the arc-shaped inner plate slides out of the arc-shaped groove, so that the diameter of the adjustment ring becomes larger, thereby improving the adaptability to jacking pipes of different sizes. The device does not need manual adjustment, and can greatly improve construction efficiency.

[0023] In this device, the inner diameter of the steel ring body is larger than the outer diameter of the jacking pipe, which facilitates the smooth insertion of the jacking pipe into the construction hole. The outer wall of the steel ring body is provided with an outer water stop ring, which plays a major role in water stopping. One end of the steel ring body located outside the hole in the well wall is fixedly connected with a sand retaining ring, which can block the falling mud, sand and rocks outside the hole. An inner water stop ring is provided in the adjusting ring, which can further play the role of water stopping and sand prevention when it is squeezed, expanded and deformed when the jacking pipe is inserted. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of an implementation of a water-stopping device for a pipe jacking construction hole provided by the utility model;

[0025] Figure 2 for Figure 1 A schematic diagram of a side cross-sectional structure;

[0026] Figure 3 for Figure 1 Schematic diagram of the front cross-sectional structure of the sand retaining ring.

[0027] In the figure: 1, steel ring body; 2, outer water stop ring; 3, sand retaining ring; 4, avoidance ring groove; 5, inner water stop ring; 6, arc-shaped steel plate shell; 61, arc-shaped groove; 7, arc-shaped inner plate; 8, positioning slider; 9, mounting groove; 10, telescopic rod; 11, slide plate; 12, spring; 13, moving rod; 14, ring cover. DETAILED DESCRIPTION

[0028] See also Figures 1 to 3As shown, the utility model provides a water-stopping device for a tunnel opening for pipe jacking construction, comprising a steel ring body 1, an adjustment ring assembly, an inner water-stop ring 5 and a plurality of elastic adjustment structures. The steel ring body 1 can be inserted into the tunnel opening, and the outer wall of the steel ring body 1 is sleeved with an outer water-stop ring 2. The steel ring body 1 is located on one side of the tunnel opening and fixed with a sand retaining ring 3, and the inner wall of the sand retaining ring 3 is recessed with an avoidance ring groove 4; the adjustment ring assembly is arranged in the avoidance ring groove 4, and the adjustment ring assembly comprises a plurality of arc-shaped steel plate shells 6, a plurality of arc-shaped inner plates 7 and a plurality of positioning slide blocks 8, each of the arc-shaped steel plate shells 6 is provided with an arc groove 61, and the two ends of each of the arc-shaped inner plates 7 are respectively inserted in two adjacent ones. In the arc groove 61, a positioning slider 8 is fixed at both ends of the arc inner plate 7, and the positioning slider 8 is slidably connected in the arc groove 61, so that multiple arc steel plate shells 6 and multiple arc inner plates 7 are connected in sequence to form an adjustment ring; the inner water stop ring 5 is installed on the inner wall of the adjustment ring; multiple elastic adjustment structures correspond one by one to multiple arc steel plate shells 6, and each elastic adjustment structure is arranged between the outer wall of the arc steel plate shell 6 and the sand retaining ring 3.

[0029] When the jacking pipe is inserted into the sand retaining ring 3, the jacking pipe passes through the inner water stop ring 5, and the inner water stop ring 5 is squeezed and expanded by the jacking pipe. At this time, the arc steel plate shell 6 and the arc inner plate 7 are relatively displaced, and the arc inner plate 7 slides out of the arc groove 61, so that the diameter of the adjustment ring becomes larger, thereby improving the adaptability to jacking pipes of different sizes. The device does not need manual adjustment, which can greatly improve the construction efficiency.

[0030] In this device, the inner diameter of the steel ring body 1 is larger than the outer diameter of the jacking pipe, which facilitates the smooth insertion of the jacking pipe into the construction hole. The outer wall of the steel ring body 1 is provided with an outer water stop ring 2, which plays a major role in stopping water. One end of the steel ring body 1 located outside the hole in the well wall is fixedly connected with a sand retaining ring 3, which can block the mud, sand and rocks outside the hole. An inner water stop ring 5 is provided in the adjusting ring, which can further play a role in stopping water and preventing sand when it is squeezed, expanded and deformed when the jacking pipe is inserted.

[0031] Specifically, the sand retaining ring 3 is provided with a plurality of mounting grooves 9 at equal intervals in the circumferential direction, the mounting grooves 9 are connected to the avoidance ring groove 4, and the plurality of elastic adjustment structures correspond one to one to the mounting grooves 9. By providing a plurality of mounting grooves 9 in the sand retaining ring 3, an accommodation space can be provided for the elastic expansion and contraction deformation of the elastic adjustment structure.

[0032] Further, refer to Figure 2 and Figure 3As shown, the elastic adjustment structure includes a telescopic rod 10, a slide plate 11, a spring 12 and a moving rod 13. The telescopic rod 10 is fixed in the mounting groove 9; the slide plate 11 is fixed to the movable end of the telescopic rod 10, and the slide plate 11 is slidably connected to the inner wall of the mounting groove 9; the spring 12 is sleeved outside the telescopic rod 10, and the two ends of the spring 12 abut against the bottom wall of the mounting groove 9 and the slide plate 11; the two ends of the moving rod 13 are respectively connected to the slide plate 11 and the arc-shaped steel plate shell 6.

[0033] When the jacking pipe passes through the inner water stop ring 5, the inner water stop ring 5 is squeezed and expanded by the jacking pipe. At this time, the arc steel plate shell 6 expands the circumferential displacement of the arc inner plate 7. At this time, the arc steel plate shell 6 squeezes the moving rod 13, pushing the slide plate 11 to move in the installation groove 9, the telescopic rod 10 contracts, and the spring 12 is squeezed and contracted to generate elastic force. The elastic force acts on the arc steel plate shell 6, so that the inner water stop ring 5 is pressed against the side wall of the jacking pipe, improving the sealing and water-stopping effect. In addition, this structure allows the inner water stop ring 5 to automatically adapt to the use of pipes of different sizes, which improves the scope of application of the device. Compared with the prior art of adjusting with bolts, it is more convenient to use and improves the efficiency of jacking construction.

[0034] Specifically, the telescopic rod 10 includes a fixed rod and a movable rod, wherein a slide groove is provided in the fixed rod, and a rubber block is provided at one end of the movable rod, wherein the rubber block slides in the slide groove, and the other end of the movable rod is a movable end. In the initial state, the fixed rod and the movable rod are in an extended state under the action of the spring 12, and friction resistance is generated by the rubber block and the inner wall of the slide groove. When the arc-shaped steel plate shell 6 expands outward, the movable rod is squeezed, and the movable rod is driven to slide against the resistance, and the spring 12 is compressed at the same time. The pressure of the contraction of the spring 12 reacts on the arc-shaped steel plate shell 6 to align and squeeze and tighten.

[0035] The telescopic rod 10 can also directly use a hydraulic rod.

[0036] Specifically, the side wall of the installation groove 9 is provided with a through hole connected to the avoidance ring groove 4 for the mobile rod 13 to pass through, so as to facilitate the displacement of the mobile rod 13; the notch of the installation groove 9 is provided on the front side wall of the sand retaining ring 3, and a ring cover 14 is fixed to the notch of the installation groove 9 by a fastener. After convenient disassembly, it is convenient to inspect the elastic adjustment structure inside the sand retaining ring 3.

[0037] Preferably, the supporting materials of the outer water stop ring 2 and the inner water stop ring 5 are both elastic rubber materials. The outer water stop ring 2 can make the steel ring body 1 fit more closely with the inner wall of the top pipe construction hole, improving the water stopping effect, and the inner water stop ring 5 can make the adjustment ring mechanism fit closely with the top pipe.

[0038] Specifically, the arc-shaped steel plate shell 6 and the inner water stop ring 5 are fixedly connected by fastening bolts, which is convenient for disassembly and replacement.

[0039] Furthermore, the outer surfaces of the steel ring body 1 and the sand retaining ring 3 are provided with a galvanized anti-corrosion layer, and the galvanized anti-corrosion layer is provided by a galvanizing process to improve corrosion resistance, prevent rust, and increase service life.

[0040] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A water-stopping device for a pipe jacking construction hole, characterized in that: include: A steel ring body can be inserted into the hole, an outer wall of the steel ring body is sleeved with an outer water stop ring, a sand retaining ring is fixed to the steel ring body at one side of the hole, and an avoidance ring groove is recessed on the inner wall of the sand retaining ring; An adjusting ring assembly is arranged in the avoidance ring groove, and the adjusting ring assembly includes a plurality of arc-shaped steel plate shells, a plurality of arc-shaped inner plates and a plurality of positioning slide blocks. An arc-shaped groove is arranged in each of the arc-shaped steel plate shells, and the two ends of each of the arc-shaped inner plates are respectively inserted in two adjacent arc-shaped grooves. A positioning slide block is respectively fixed at the two ends of the arc-shaped inner plates, and the positioning slide block is slidably connected in the arc-shaped groove, so that the plurality of arc-shaped steel plate shells and the plurality of arc-shaped inner plates are sequentially connected to form an adjusting ring; An inner water stop ring is installed on the inner wall of the adjusting ring; as well as, A plurality of elastic adjustment structures correspond one to one with the plurality of arc-shaped steel plate shells, and each of the elastic adjustment structures is arranged between the outer side wall of the arc-shaped steel plate shell and the sand retaining ring.

2. The water-stopping device for the opening of a pipe jacking construction according to claim 1 is characterized in that: The sand retaining ring is provided with a plurality of mounting grooves at equal intervals in the circumferential direction, the mounting grooves are communicated with the avoidance ring grooves, and the plurality of elastic adjustment structures correspond to the mounting grooves one by one.

3. The water-stopping device for the opening of a pipe jacking construction according to claim 2 is characterized in that: The elastic adjustment structure comprises: A telescopic rod, fixed in the mounting groove; A slide plate, fixed to the movable end of the telescopic rod, the slide plate being slidably connected to the inner wall of the mounting groove; a spring, sleeved outside the telescopic rod, with two ends of the spring abutting against the bottom wall of the mounting slot and the slide plate; and, A moving rod, two ends of which are respectively connected to the slide plate and the arc-shaped steel plate shell.

4. The water-stopping device for the top pipe construction hole according to claim 3 is characterized in that: The telescopic rod comprises a fixed rod and a movable rod, a slide groove is arranged in the fixed rod, a rubber block is arranged at one end of the movable rod, the rubber block is slidably arranged in the slide groove, and the other end of the movable rod is a movable end.

5. The water-stopping device for the opening of a pipe jacking construction according to claim 3 is characterized in that: The side wall of the installation groove is provided with a through hole communicating with the avoidance ring groove for the moving rod to pass through; The notch of the installation groove is arranged on the front side wall of the sand retaining ring, and a ring cover is fixed at the notch of the installation groove by a fastener.

6. The water-stopping device for the opening of a pipe jacking construction according to claim 1, characterized in that: The supporting materials of the outer water stop ring and the inner water stop ring are both made of elastic rubber.

7. The water-stopping device for the opening of a pipe jacking construction according to claim 1, characterized in that: The arc-shaped steel plate shell and the inner water stop ring are fixedly connected by fastening bolts.

8. The water-stopping device for the opening of a pipe jacking construction according to claim 1, characterized in that: The outer surfaces of the steel ring body and the sand retaining ring are provided with a galvanized anti-corrosion layer.

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