Grouting device for pipe jacking construction
By designing a grouting device for pipe top construction, the power cylinder and guide pipe are used to inject slurry into pipe top construction, the problem of soft soil collapse is solved, and the soil reinforcement and anti-collapse effect is achieved.
Patent Information
- Application Number
- CN202421890965.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-06
AI Technical Summary
In the construction of the top pipe, when the soil covered with the upper part of the top pipe is shallow or the soil around the excavation surface is softer, grouting alone on the excavation surface cannot effectively prevent the soil from collapse.
A grouting device for pipe top construction is designed, including a power cylinder, a vertical connecting seat and a first grouting guide tube. The first grouting guide tube is moved by the movement of the power cylinder piston rod, and its pointed head drills into the soil and injects slurry through the slurry holes in the side wall to strengthen the soil and prevent collapse.
The device can effectively extend into the soil for grouting, strengthen the soil structure, and prevent the soil from collapse, especially when the upper part of the top pipe is shallow or the soil is soft.
Smart Images
Figure CN223004019U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of pipe jacking construction, and particularly to a grouting device for pipe jacking construction. Background Technique
[0002] Pipe jacking technology is a non-excavation pipe-laying construction technology used in municipal construction. Its advantages are that it does not affect the surrounding environment or has little impact, the construction site is small, the noise is small, and it can operate deep underground, which is an incomparable advantage of open-cut pipe burying. In pipe jacking construction, grouting holes are often opened on the pipe wall of the pipe jacking, and grout is injected through the grouting holes to balance the soil pressure on the excavation surface and prevent soil collapse.
[0003] However, when the overburden above the pipe jacking is shallow or the soil around the excavation surface is relatively soft, grouting only on the excavation surface cannot effectively prevent soil collapse, and grouting should also be extended into the soil to strengthen the soil and avoid soil collapse.
[0004] Therefore, it is extremely important to propose a grouting device for pipe jacking construction that can extend into the soil for grouting. Content of the Utility Model
[0005] The purpose of the utility model is to solve the problem that when the overburden above the pipe jacking is shallow or the soil around the excavation surface is relatively soft, grouting only on the excavation surface cannot effectively prevent soil collapse.
[0006] To solve the above technical problems, the technical solution adopted by the utility model is: a grouting device for pipe jacking construction, including a power cylinder, a vertical connecting seat, and a first grouting guide pipe;
[0007] The end of the piston rod of the power cylinder is connected to the vertical connecting seat; a through hole is opened in the vertical connecting seat; the front end of the first grouting guide pipe is provided with a pointed head, and the rear end is connected to the vertical connecting seat; the rear end of the first grouting guide pipe is connected to the grouting pipe of the grouting equipment through the through hole; a plurality of slurry discharge holes are opened on the side wall of the first grouting guide pipe;
[0008] The movement of the piston rod of the power cylinder drives the movement of the first grouting guide pipe, and the first grouting guide pipe drills into the soil around the pipe through its pointed head.
[0009] Furthermore, it also includes a second grouting guide pipe; a plurality of slurry discharge holes are also opened on the side wall of the second grouting guide pipe; the front end of the second grouting guide pipe is connected to the rear end of the first grouting guide pipe, the rear end of the second grouting guide pipe is connected to the vertical connecting seat, and the rear end of the second grouting guide pipe is connected to the grouting pipe of the grouting equipment through the through hole.
[0010] Furthermore, it also includes a base and a column; the power cylinder is connected above the base; the column is connected above the base and a guide hole for the first grouting guide pipe to pass through is opened in the column; the diameter of the guide hole matches the diameter of the first grouting guide pipe.
[0011] Further, it further includes an arc-shaped block; the arc-shaped block is bolted to the top of the column; an arc-shaped groove is formed at the top of the column, and the groove of the arc-shaped block and the arc-shaped groove at the top of the column together form a guiding hole.
[0012] Further, it further includes a guiding groove; the guiding groove is connected to the column and the lower part of the first grouting guiding pipe is clamped in the guiding groove.
[0013] Further, it further includes a guiding rod; the front end of the guiding rod is connected to the column, and the rear end penetrates through the vertical connecting seat; the guiding rod is parallel to the first grouting guiding pipe.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] This device is placed inside the pipe jacking pipeline; when the overburden soil above the pipe jacking is relatively shallow or the soil around the excavation surface is relatively soft, the present utility model drives the vertical connecting seat to move through the movement of the piston rod of the power cylinder, the vertical connecting seat drives the first grouting guiding pipe to move, and the pointed head of the first grouting guiding pipe drills into the soil around the pipeline after passing through the grouting hole in the pipe wall of the pipe jacking; the grouting equipment grouts into the first grouting guiding pipe through the grouting pipe, and the slurry is poured into the soil through multiple slurry discharge holes on the side wall of the first grouting guiding pipe, so as to strengthen the soil and prevent the soil from collapsing. Brief Description of the Drawings
[0016] Figure 1 It is the overall schematic diagram of the present utility model.
[0017] Figure 2 It is the disassembled schematic diagram of the present utility model.
[0018] The interpretations of each label in the figure are as follows: 1. Power cylinder; 2. Vertical connecting seat; 3. First grouting guiding pipe; 3a. Second grouting guiding pipe; 4. Slurry discharge hole; 5. Base; 6. Column; 6a. Arc-shaped block; 7. Guiding groove; 8. Guiding rod. Detailed Embodiment
[0019] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the specification drawings and specific embodiments. The described embodiments are one of the embodiments of the present utility model, and the present utility model can also have other embodiments.
[0020] Embodiment:
[0021] Refer to Figure 1 , Figure 2 A grouting device for pipe jacking construction of the present utility model includes a power cylinder 1, a vertical connecting seat 2, and a first grouting guiding pipe 3;
[0022] The end of the piston rod of the power cylinder 1 is connected to the vertical connecting seat 2; the vertical connecting seat 2 is provided with a through hole; the front end of the first grouting guide pipe 3 is provided with a pointed head, and the rear end is connected to the vertical connecting seat 2; the rear end of the first grouting guide pipe 3 communicates with the grouting pipe of the grouting equipment through the through hole; a plurality of slurry discharge holes 4 are formed in the side wall of the first grouting guide pipe 3;
[0023] The movement of the piston rod of the power cylinder 1 drives the movement of the first grouting guide pipe 3, and the first grouting guide pipe 3 drills into the soil around the pipeline through its pointed head.
[0024] In this embodiment, the power cylinder 1 can be a hydraulic cylinder or a pneumatic cylinder; an electric telescopic rod can also be used to replace the power cylinder 1 to provide power.
[0025] This device is placed inside the pipe jacking pipeline, and a grouting device for pipe jacking is placed inside the pipe jacking pipeline; when the overburden above the pipe jacking is relatively shallow or the soil around the excavation surface is relatively soft, the utility model drives the vertical connecting seat 2 to move through the movement of the piston rod of the power cylinder 1, the vertical connecting seat 2 drives the first grouting guide pipe 3 to move, and the pointed head of the first grouting guide pipe 3 drills into the soil around the pipeline after passing through the grouting hole in the pipe wall of the pipe jacking; the grouting device grouts into the first grouting guide pipe 3 through the grouting pipe, and the slurry is poured into the soil through a plurality of slurry discharge holes 4 on the side wall of the first grouting guide pipe 3, so as to strengthen the soil and avoid soil collapse.
[0026] As a preferred embodiment, it further includes a second grouting guide pipe 3a; a plurality of slurry discharge holes 4 are also formed in the side wall of the second grouting guide pipe 3a; the front end of the second grouting guide pipe 3a is connected to the rear end of the first grouting guide pipe 3, the rear end of the second grouting guide pipe 3a is connected to the vertical connecting seat 2 and the rear end of the second grouting guide pipe 3a communicates with the grouting pipe of the grouting equipment through the through hole.
[0027] In this embodiment, the front end of the second grouting guide pipe 3a is provided with an external thread, the rear end of the first grouting guide pipe 3 is provided with an internal thread, and the front end of the second grouting guide pipe 3a is threadedly connected to the rear end of the first grouting guide pipe 3. The front end of the second grouting guide pipe 3a and the rear end of the first grouting guide pipe 3 can also be welded. The connection between the second grouting guide pipe 3a and the first grouting guide pipe 3 increases the length of the grouting part of this device, so this device can extend into deeper soil layers for grouting operations; during actual operation, multiple second grouting guide pipes 3a can be sequentially connected to the rear end of the first grouting guide pipe 3 to increase the length of the grouting part of this device, so as to meet the requirements for grouting operations in deeper soil layers.
[0028] As a preferred embodiment, it further includes a base 5 and a column 6; the power cylinder 1 is connected above the base 5; the column 6 is connected above the base 5 and the column 6 is provided with a guide hole for the first grouting guide pipe 3 to pass through; the diameter of the guide hole matches the diameter of the first grouting guide pipe 3.
[0029] In this embodiment, during operation, the base 5 and the column 6 are temporarily fixed to the inner side of the pipe jacking pipe wall, and the grouting holes of the guiding hole are aligned with those of the pipe jacking pipe wall; the first grouting guiding pipe 3 extends into the soil along the guiding hole, and the moving track is stable.
[0030] As a preferred embodiment, it further includes an arc-shaped block 6a; the arc-shaped block 6a is bolted to the top of the column 6; an arc-shaped groove is formed at the top of the column 6, and the groove of the arc-shaped block 6a and the arc-shaped groove at the top of the column 6 together form the guiding hole.
[0031] In this embodiment, the arc-shaped block 6a is bolted to the top of the column 6, which is convenient for installation and disassembly. Similarly, it is also convenient for the first grouting guiding pipe 3 to be inserted into the guiding hole.
[0032] As a preferred embodiment, it further includes a guiding groove 7; the guiding groove 7 is connected to the column 6 and the lower part of the first grouting guiding pipe 3 is clamped in the guiding groove 7.
[0033] In this embodiment, the lower part of the first grouting guiding pipe 3 is clamped in the guiding groove 7, making the moving track of the first grouting guiding pipe 3 more stable during the moving process.
[0034] As a preferred embodiment, it further includes a guiding rod 8; the front end of the guiding rod 8 is connected to the column 6, and the rear end penetrates through the vertical connecting seat 2; the guiding rod 8 is parallel to the first grouting guiding pipe 3.
[0035] In this embodiment, the piston rod of the power cylinder 1 drives the vertical connecting seat 2 to move along the guiding rod 8, and the vertical connecting seat 2 drives the first grouting guiding pipe 3 to move, making the moving track of the first grouting guiding pipe 3 stable.
[0036] The "connection", "fixation", and "butt joint" mentioned in the description of the present utility model can be fixed connection, processing and forming, welding, or mechanical connection. The specific meanings of the above terms in the present utility model should be understood according to the specific situation.
[0037] In the description of the present utility model, the terms "inner", "upper", "lower", "end", "side", "outer", etc. indicate the orientation or positional relationship only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model.
[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A grouting device for pipe jacking construction, characterized in that: It comprises a power cylinder (1), a vertical connection seat (2), and a first grouting guide pipe (3); The end of the piston rod of the power cylinder (1) is connected to the vertical connection seat (2); the vertical connection seat (2) is provided with a through hole; the front end of the first grouting guide pipe (3) is provided with a pointed portion, and the rear end is connected to the vertical connection seat (2); the rear end of the first grouting guide pipe (3) is connected to the grouting pipe of the grouting equipment through the through hole; the side wall of the first grouting guide pipe (3) is provided with a plurality of grouting discharge holes (4); The movement of the piston rod of the power cylinder (1) drives the first grouting guide pipe (3) to move, and the first grouting guide pipe (3) drills into the soil around the pipe through its pointed head.
2. A grouting device for pipe jacking construction according to claim 1, characterized in that: It also comprises a second grouting guide pipe (3a); a plurality of grouting holes (4) are also formed on the side wall of the second grouting guide pipe (3a); the front end of the second grouting guide pipe (3a) is connected to the rear end of the first grouting guide pipe (3), the rear end of the second grouting guide pipe (3a) is connected to the vertical connection seat (2), and the rear end of the second grouting guide pipe (3a) is connected to the grouting pipe of the grouting equipment through a through hole.
3. A grouting device for pipe jacking construction according to claim 1, characterized in that: It also comprises a base (5) and a column (6); the power cylinder (1) is connected to the top of the base (5); the column (6) is connected to the top of the base (5) and the column (6) is provided with a guide hole for the first grouting guide pipe (3) to pass through; the diameter of the guide hole matches the diameter of the first grouting guide pipe (3).
4. A grouting device for pipe jacking construction according to claim 3, characterized in that: It also includes an arc block (6a); the arc block (6a) is bolted to the top of the column (6); the top of the column (6) is provided with an arc groove, and the groove of the arc block (6a) and the arc groove on the top of the column (6) together form a guide hole.
5. A grouting device for pipe jacking construction according to claim 3, characterized in that: It also comprises a guide groove (7); the guide groove (7) is connected to the column (6) and the lower part of the first grouting guide pipe (3) is clamped in the guide groove (7).
6. A grouting device for pipe jacking construction according to claim 3, characterized in that: It also includes a guide rod (8); the front end of the guide rod (8) is connected to the column (6), and the rear end passes through the vertical connection seat (2); the guide rod (8) is parallel to the first grouting guide pipe (3).