A shield tunnel grouting hole sealing device

Abstract

The utility model provides a kind of shield tunnel grouting hole sealing equipment, including threaded rod, the outside of threaded rod is connected with connecting column, connecting column's bottom is equipped with connecting shell, the inner wall of connecting shell is attached with the outer wall of threaded rod, and the bottom side of threaded rod is equipped with first rubber plug, second rubber plug, third rubber plug.The utility model can provide supporting action by when first rubber plug, second rubber plug, third rubber plug are compressed or expanded, and elastic frame and wire are matched from inside, guarantee the stability of the shape of multiple rubber plugs, so that it does not lose sealing performance because of excessive deformation.Meanwhile, elastic frame can also enhance the resilience of rubber plug under the elastic cooperation of wire, so that it can better restore original shape in the process of repeated compression and expansion, maintain good sealing effect, prevent leakage of raw materials.

Description

Technical Field

[0001] This utility model belongs to the field of grouting and sealing technology, and more specifically, it relates to a grouting hole sealing device for shield tunnels. Background Technology

[0002] In the construction of shield tunnels, grouting technology is a crucial step in ensuring tunnel stability, waterproofing, and structural safety. The grouting holes, serving as the operational channels for grouting, directly affect the long-term performance and service life of the tunnel after the grouting process is completed.

[0003] In shield tunnel grouting hole sealing projects, rubber sealing devices are widely used due to their good elasticity and sealing performance. However, traditional rubber sealing devices have some limitations in practical applications. When the grouting hole wall has a certain degree of roughness, unevenness, or slight misalignment, the elastic deformation of the rubber itself may not be able to completely conform to every fine contour of the hole wall, which can easily create tiny gaps, leading to poor sealing and the risk of leakage.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a grouting hole sealing device for shield tunnels, in order to achieve a more practical purpose. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a grouting hole sealing device for shield tunnels, which is achieved by the following specific technical means:

[0006] A sealing device for grouting holes in a shield tunnel includes a threaded rod with a connecting column threaded to its outer side. A connecting housing is installed at the bottom of the connecting column, and the inner wall of the connecting housing is fitted against the outer wall of the threaded rod. A first rubber plug, a second rubber plug, and a third rubber plug are installed on the bottom side of the threaded rod. The outer walls of the first rubber plug, the second rubber plug, and the third rubber plug are all fitted against the inner wall of the connecting housing. Elastic components are symmetrically arranged on both sides of the inner walls of the first rubber plug, the second rubber plug, and the third rubber plug.

[0007] Preferably, the elastic component includes a plurality of grooves, a metal wire is installed on one side of the inner wall of each of the plurality of grooves, an elastic frame is installed at one end of each metal wire, the outer side wall of each elastic frame is slidably connected to the inner wall of the corresponding groove, and one end of each elastic frame passes through the groove and is fitted to the outer side wall of the connecting housing.

[0008] Preferably, each of the elastic frames has an inclined surface on one side, and each inclined surface is oriented toward the side of the connecting housing.

[0009] Preferably, a pressure sensor and a humidity sensor are respectively installed on both sides of the inner wall of the second rubber stopper, and the pressure sensor is electrically connected to the pressure gauge through a guide, and the humidity sensor can be connected to an external display device through a wire.

[0010] Preferably, the first rubber stopper, the second rubber stopper, and the third rubber stopper are all made of silicone rubber.

[0011] Preferably, a rotating handle for rotating the connecting column is installed on both sides of the connecting column.

[0012] Preferably, the inner wall of the threaded rod is provided with a channel for material flow, and the top side of the threaded rod is provided with a feed port, a control valve is installed at the feed port, and the bottom of the threaded rod is provided with a discharge port.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This utility model provides support from the inside by using an elastic frame and metal wire when the first, second, and third rubber stoppers are compressed or expanded. This ensures the stability of the shape of the multiple rubber stoppers and prevents them from losing their sealing performance due to excessive deformation. Simultaneously, the elastic frame, in conjunction with the elastic metal wire, enhances the resilience of the rubber stoppers, allowing them to better recover their original shape during repeated compression and expansion, maintaining a good sealing effect and preventing material leakage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of a grouting hole sealing device for a shield tunnel according to this utility model.

[0016] Figure 2 This is a cross-sectional structural diagram of a grouting hole sealing device for a shield tunnel according to this utility model.

[0017] Figure 3 This utility model relates to a sealing device for grouting holes in shield tunnels. Figure 2 Enlarged structural diagram at point A in the middle.

[0018] Figure 4 This is a partial cross-sectional structural diagram of a grouting hole sealing device for a shield tunnel according to this utility model.

[0019] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0020] 1. Threaded rod; 2. Connecting column; 3. Rotating handle; 4. Pressure gauge; 5. Feed inlet; 6. Control valve; 7. Connecting housing; 8. First rubber plug; 9. Second rubber plug; 10. Third rubber plug; 11. Discharge port; 12. Groove; 13. Metal wire; 14. Elastic frame; 15. Pressure sensor; 16. Humidity sensor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example:

[0023] As attached Figure 1 To be continued Figure 4 As shown:

[0024] This utility model provides a sealing device for grouting holes in a shield tunnel, including a threaded rod 1. A connecting column 2 is threadedly connected to the outer side of the threaded rod 1. A connecting housing 7 is installed at the bottom of the connecting column 2. The inner wall of the connecting housing 7 is fitted to the outer wall of the threaded rod 1. A first rubber plug 8, a second rubber plug 9, and a third rubber plug 10 are installed on the bottom side of the threaded rod 1. The outer walls of the first rubber plug 8, the second rubber plug 9, and the third rubber plug 10 are all fitted to the inner wall of the connecting housing 7. Elastic components are symmetrically arranged on both sides of the inner walls of the first rubber plug 8, the second rubber plug 9, and the third rubber plug 10.

[0025] The elastic component includes multiple grooves 12, with a metal wire 13 installed on one side of the inner wall of each groove 12. An elastic frame 14 is installed at one end of each metal wire 13. The outer wall of each elastic frame 14 is slidably connected to the inner wall of the corresponding groove 12, and one end of each elastic frame 14 penetrates the groove 12 and fits against the outer wall of the connecting housing 7. When the first rubber stopper 8, the second rubber stopper 9, and the third rubber stopper 10 are compressed or expanded, the elastic frame 14 and the metal wire 13 cooperate from the inside to provide support, ensuring the stability of the shape of the multiple rubber stoppers and preventing them from losing their sealing performance due to excessive deformation. Simultaneously, the elastic frame 14, with the elastic cooperation of the metal wire 13, also enhances the resilience of the rubber stoppers, allowing them to better recover their original shape during repeated compression and expansion, maintaining a good sealing effect and preventing material leakage.

[0026] Each elastic frame 14 has an inclined surface on one side, and each inclined surface faces the connecting housing 7. Because each elastic frame 14 has an inclined surface on one side, when the connecting housing 7 is moved downward by rotating the handle 3, the connecting housing 7 can smoothly pass through the inclined surface and cause the elastic frame 14 to retract inward.

[0027] The inner walls of the second rubber stopper 9 are respectively equipped with a pressure sensor 15 and a humidity sensor 16. The pressure sensor 15 is electrically connected to the pressure gauge 4 through a guide, and the humidity sensor 16 can be connected to an external display device through a wire.

[0028] Among them, the first rubber stopper 8, the second rubber stopper 9, and the third rubber stopper 10 are all made of silicone rubber. Silicone rubber has excellent high and low temperature resistance, weather resistance, moisture resistance, and high air permeability, making it easy to use.

[0029] Both sides of the connecting column 2 are equipped with rotating handles 3 for rotating the connecting column 2. By rotating the handles 3, the connecting column 2 can be driven to run along the outer thread of the threaded rod 1, and the connecting housing 7 can be driven to penetrate into the inner wall of multiple rubber plugs, forcing the first rubber plug 8, the second rubber plug 9, and the third rubber plug 10 to expand and tightly fit against the grouting hole wall, forming a sealing effect, thereby preventing leakage.

[0030] The inner wall of the threaded rod 1 is provided with a channel for material flow, and the top side of the threaded rod 1 is provided with a feed port 5. A control valve 6 is installed at the feed port 5, and the bottom of the threaded rod 1 is provided with a discharge port 11. Material is fed through the feed port 5, and the speed of material entry is controlled by the control valve 6 to inject material through the discharge port 11.

[0031] The working principle of this embodiment is as follows: By rotating the handle 3, the connecting column 2 can be driven to run along the outer thread of the threaded rod 1. As the connecting column 2 rotates, the connecting housing 7 will move downward. This process forces the first rubber plug 8, the second rubber plug 9, and the third rubber plug 10 to expand and tightly fit against the grouting hole wall, forming a sealing effect and preventing leakage. When the first rubber plug 8, the second rubber plug 9, and the third rubber plug 10 are compressed or expanded, the elastic components on both sides of their inner walls begin to work. The elastic components include multiple grooves 12 and metal wires. 13 and elastic frame 14, one end of metal wire 13 is connected to one side of the inner wall of groove 12, and the other end is connected to elastic frame 14. The outer wall of elastic frame 14 is slidably connected to the inner wall of groove 12, and one end of it penetrates groove 12 and fits against the outer wall of connecting housing 7. This structural design allows elastic frame 14 and metal wire 13 to provide support from the inside, ensuring the stability of the rubber stopper shape and avoiding loss of sealing performance due to excessive deformation. Each elastic frame 14 has a bevel on one side, and the bevel faces the connecting housing 7. When connected When the housing 7 is moved downward by the rotating handle 3, the connecting housing 7 smoothly drives the elastic frame 14 to retract through the inclined surface, ensuring the smoothness of the equipment during operation. Pressure sensors 15 and humidity sensors 16 are respectively installed on both sides of the inner wall of the second rubber plug 9. The pressure sensor 15 is electrically connected to the pressure gauge 4 through the guide, which can monitor and display the pressure in the grouting hole in real time. The humidity sensor 16 can be connected to an external display device through the wire to monitor humidity changes. The setting of these sensors helps the operator to understand the pressure and humidity conditions during the sealing process in a timely manner, ensuring the sealing quality. The shield tunnel grouting hole sealing equipment of this utility model expands and tightly fits the rubber plug against the grouting hole wall by rotating the handle 3 and using the cooperation of the connecting column 2 and the connecting housing 7. At the same time, the elastic component provides support and enhances resilience to ensure the sealing effect. In addition, the setting of sensors enhances the monitoring capability of the equipment, while the channel design of the threaded rod 1 ensures the smooth injection and control of materials. These components work together to achieve efficient sealing function and effectively prevent the leakage of raw materials.

[0032] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A sealing device for grouting holes in a shield tunnel, comprising a threaded rod (1), characterized in that: The threaded rod (1) is threadedly connected to a connecting post (2). A connecting housing (7) is installed at the bottom of the connecting post (2). The inner wall of the connecting housing (7) is fitted to the outer wall of the threaded rod (1). A first rubber plug (8), a second rubber plug (9), and a third rubber plug (10) are installed on the bottom side of the threaded rod (1). The outer walls of the first rubber plug (8), the second rubber plug (9), and the third rubber plug (10) are fitted to the inner wall of the connecting housing (7). Elastic components are symmetrically arranged on both sides of the inner walls of the first rubber plug (8), the second rubber plug (9), and the third rubber plug (10).

2. The grouting hole sealing device for shield tunnels as described in claim 1, characterized in that: The elastic component includes multiple grooves (12), and a metal wire (13) is installed on one side of the inner wall of each of the multiple grooves (12). An elastic frame (14) is installed at one end of each metal wire (13). The outer side wall of each elastic frame (14) is slidably connected to the inner wall of the corresponding groove (12), and one end of each elastic frame (14) passes through the groove (12) and is fitted to the outer side wall of the connecting housing (7).

3. The grouting hole sealing device for shield tunnels as described in claim 2, characterized in that: Each of the elastic frames (14) has a ramp on one side, and each ramp faces the side of the connecting housing (7).

4. The grouting hole sealing device for shield tunnels as described in claim 1, characterized in that: A pressure sensor (15) and a humidity sensor (16) are respectively installed on both sides of the inner wall of the second rubber stopper (9). The pressure sensor (15) is electrically connected to the pressure gauge (4) through a guide, and the humidity sensor (16) can be connected to an external display device through a wire.

5. The grouting hole sealing device for shield tunnels as described in claim 1, characterized in that: The first rubber stopper (8), the second rubber stopper (9), and the third rubber stopper (10) are all made of silicone rubber.

6. The grouting hole sealing device for shield tunnels as described in claim 1, characterized in that: Both sides of the connecting column (2) are equipped with rotating handles (3) for rotating the connecting column (2).

7. The grouting hole sealing device for shield tunnels as described in claim 1, characterized in that: The inner wall of the threaded rod (1) is provided with a channel for material flow, and the top side of the threaded rod (1) is provided with a feed port (5), a control valve (6) is installed at the feed port (5), and the bottom of the threaded rod (1) is provided with a discharge port (11).

Images