Advanced small guide pipe quick grouting joint

Abstract

This utility model discloses a rapid grouting connector for advanced small guide tubes, including a guide tube; a squeezing tube and a rubber tube are sequentially fitted around the outer periphery of the guide tube along the flow direction; a threaded section is machined on the guide tube; a handle is fitted on the threaded section; the inner wall of the handle is machined with an internal thread that mates with the threaded section; when the handle is rotated and moved, it pushes the squeezing tube to move axially along the guide tube and squeezes the rubber tube to expand and deform radially; the rubber tube includes a front baffle, several rubber sleeves that fit together end to end, and a rear baffle; the front baffle is connected to the rubber sleeve at one end; the rear baffle is connected to the rubber sleeve at the other end; this utility model disassembles the rubber tube into several rubber sleeves that can fit together, and seals the front and rear ends with the front and rear baffles. The fitting connection of the rubber sleeves ensures the sealing between each rubber sleeve, and also ensures the uniformity of force. The split structure facilitates cleaning and improves the overall reuse efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel construction grouting equipment, and in particular to a rapid grouting joint with an advanced small guide pipe. Background Technology

[0002] Forepoling grouting is a commonly used pre-support technology in underground engineering projects such as tunnels and foundation pits, primarily used for the pre-reinforcement of weak and fractured strata or high-risk excavation sections. The grouting joint, as a key component connecting the forepoling pipe and the grouting equipment, directly affects the grouting effect and construction safety through its structural design and performance. In traditional grouting processes, grouting threads are welded onto the forepoling pipe and then connected to the grouting pipe thread. This welding process requires skilled welders and is time-consuming, while multiple forepoling pipes are often needed on-site, making the traditional connection method impractical. To address this issue, a quick-connect grouting joint for forepoling pipes is introduced, which allows for both reuse and rapid connection. Currently, the quick-connect grouting joint for forepoling pipes uses a radially expandable rubber tube to seal and connect the forepoling pipes. For example, patent CN213953622U describes an advanced small-diameter grouting connector device, which includes: a screw, a rubber sleeve, a tube sleeve, a handle, a ball valve, and a pressure gauge; the rubber sleeve and tube sleeve are installed on the outer surface of the front end of the screw, and the ball valve and pressure gauge are connected to the rear end of the screw; the rubber sleeve is fitted onto the outer surface of the front end of the screw, and the tube sleeve is fitted onto the outer surface of the screw. Behind the rubber sleeve, the handle is installed behind the tube sleeve, and the ball valve and pressure gauge are sequentially installed at the rear end of the screw. By rotating the handle, the forward and backward movement of the tube sleeve is controlled to control the rubber sleeve to bulge and fit tightly against the inner wall of the advanced small-diameter guide tube to achieve a seal. However, in actual construction and use, it has been found that the integrated structure of the rubber sleeve has a certain length, which makes cleaning and maintenance difficult, and some parts are damaged or cannot be cleaned properly, so the whole thing must be discarded, resulting in waste. Simply cutting the rubber sleeve into sections for reuse reveals that the independent rubber sleeves cannot fit tightly together, affecting the sealing performance. Therefore, there is a need for an advanced small-diameter quick grouting connector whose rubber sleeve can find a balance between reusability and sealing performance. Utility Model Content

[0003] The purpose of this invention is to solve the problems of the prior art and provide an advanced small guide tube quick grouting joint.

[0004] The objective of this utility model is achieved through the following technical solution: a rapid grouting connector for advanced small guide tubes, comprising a guide tube; an extrusion tube and a rubber tube are sequentially fitted around the outer periphery of the guide tube along the flow direction; a threaded section is machined on the guide tube; a handle is fitted onto the threaded section; an internal thread that mates with the threaded section is machined on the inner wall of the handle; when the handle is rotated and moved, it pushes the extrusion tube to move axially along the guide tube and extrudes the rubber tube to expand radially; the rubber tube includes a front baffle, several rubber sleeves that are connected end to end, and a rear baffle; the front baffle is connected to a rubber sleeve located at one end; the rear baffle is connected to a rubber sleeve located at the other end;

[0005] Furthermore, the rubber tube includes at least two rubber sleeves that are connected end-to-end;

[0006] Furthermore, a rubber sleeve protrusion is provided on one edge of the rubber sleeve; a first groove is provided on the other edge of the rubber sleeve corresponding to the rubber sleeve protrusion; the front and rear rubber sleeves are connected by the rubber sleeve protrusion and the first groove.

[0007] Furthermore, the rear baffle is a thin rubber sheet; a rear baffle protrusion is provided on one side surface of the rear baffle corresponding to the first slot; the rubber sleeve near one end of the rear baffle is connected to the rear baffle through the rear first slot and the rear baffle protrusion.

[0008] Furthermore, the front baffle is a thin rubber sheet; a second groove is provided on one side surface of the front baffle corresponding to the protrusion of the rubber sleeve; the rubber sleeve near one end of the front baffle is connected to the front baffle through the engagement of the rear rubber sleeve protrusion and the second groove.

[0009] Furthermore, the rubber sleeve protrusion is a spherical rubber protrusion; the first slot is an arc-shaped groove; the rear baffle protrusion is a spherical rubber protrusion; and the second slot is an arc-shaped groove.

[0010] Furthermore, the guide pipe is provided with a front baffle limiting groove; during installation, the front baffle is locked in the front baffle limiting groove;

[0011] A further technical solution is that a support piece is machined at one end of the front baffle limiting groove.

[0012] This utility model has the following advantages:

[0013] 1. The rubber tube is disassembled into several mating rubber sleeves, and the front and rear ends are sealed with front and rear baffles to ensure the flatness of the contact surfaces at the front and rear ends. After being squeezed by the extrusion tube, the mating connection of the rubber sleeves ensures the sealing between each rubber sleeve and also ensures the uniformity of force, so that after radial expansion, it fits tightly with the advanced small guide tube. At the same time, this split structure is also conducive to cleaning. If a section is damaged or cannot be cleaned, it can be directly discarded, improving the overall reuse efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the rubber hose structure.

[0016] Figure 3 This is a schematic diagram of the structure of the rubber sleeve from one perspective.

[0017] Figure 4 This is a structural schematic diagram of the rubber sleeve from another perspective.

[0018] Figure 5 This is an enlarged schematic diagram of part of the structure of this utility model.

[0019] In the diagram: 1. Guide tube; 2. Extrusion tube; 3. Rubber tube; 4. Threaded section; 5. Handle; 6. Front baffle; 7. Rubber sleeve; 8. Rear baffle; 9. Rubber sleeve protrusion; 10. First slot; 11. Rear baffle protrusion; 12. Second slot; 13. Front baffle limiting groove; 14. Support plate. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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.

[0026] Example 1: As Figures 1 to 5 As shown, a rapid grouting connector for advanced small guide tubes includes a guide tube 1; an extrusion tube 2 and a rubber tube 3 are sequentially fitted around the outer periphery of the guide tube 1 along the flow direction; a threaded section 4 is machined on the guide tube 1; a handle 5 is fitted on the threaded section 4; the inner wall of the handle 5 is machined with an internal thread that mates with the threaded section 4; when the handle 5 rotates and moves, it pushes the extrusion tube 2 to move axially along the guide tube 1 and extrudes the rubber tube 3 to expand radially; the rubber tube 3 includes a front baffle 6, several rubber sleeves 7 that are connected end to end, and a rear baffle 8; the front baffle 6 is connected to the rubber sleeve 7 located at one end; The rear baffle 8 is connected to the rubber sleeve 7 at the other end. In this embodiment, the rubber tube 3 is divided into several rubber sleeves 7 that can be connected to each other, and the front and rear ends are sealed by the front baffle 6 and the rear baffle 8 to ensure the flatness of the contact surfaces at the front and rear ends. After being squeezed by the extrusion tube 2, the connection of the rubber sleeves 7 ensures the sealing between each rubber sleeve 7, and also ensures the uniformity of the force. This makes it fit tightly with the advanced small guide tube after radial expansion. At the same time, this split structure is also conducive to cleaning. If a section is damaged or cannot be cleaned, it can be directly discarded, improving the overall reuse efficiency.

[0027] The rubber tube 3 includes at least two rubber sleeves 7 that are connected end-to-end. In this embodiment, at least two rubber sleeves 7 that are connected end-to-end are used. The appropriate number can be selected as needed to assemble rubber tubes 3 of different lengths. The rubber tube 3 can be assembled before installation, removed from the guide tube 1, and then disassembled, which helps to improve the convenience of installation.

[0028] One edge of the rubber sleeve 7 is provided with a rubber sleeve protrusion 9; the other edge of the rubber sleeve 7 is provided with a first groove 10 corresponding to the rubber sleeve protrusion 9; the front and rear rubber sleeves 7 are connected by the rubber sleeve protrusion 9 and the first groove 10; in this embodiment, the front and rear rubber sleeves 7 are connected by the rubber sleeve protrusion 9 and the first groove 10. After the rubber protrusion and the first groove 10 are connected, radial and axial sealing can be guaranteed. Because before expansion, each rubber sleeve 7 does not completely contact the inner wall of the advanced small guide tube. After the connection is made by snapping, each rubber sleeve 7 is subjected to uniform force, which is conducive to uniform radial expansion to improve sealing. It also facilitates the disassembly flexibility between each section of rubber sleeve 7. Compared with other connection methods, the assembly method of this embodiment is more advantageous.

[0029] The rear baffle 8 is a thin rubber sheet; a rear baffle protrusion 11 is provided on one side surface of the rear baffle 8 corresponding to the first slot 10; the rubber sleeve 7 near one end of the rear baffle 8 is connected to the rear baffle 8 through the first slot 10 and the rear baffle protrusion 11; in this embodiment, along the slurry flow direction, the end closer to the output is the front end and the end closer to the input is the rear end. During assembly, the rubber sleeve protrusion 9 is located at the front end and the first slot 10 is located at the rear end. The rear baffle 8 has a rear baffle protrusion 11 on one side surface and a smooth surface on the other side surface to facilitate contact with the extrusion tube 2. The rear baffle protrusion 11 can be locked in the first slot 10 of the last rubber sleeve 7, improving the sealing performance of the connection between the rear baffle 8 and the rubber sleeve 7.

[0030] The front baffle 6 is a thin rubber sheet; a second groove 12 is provided on one side surface of the front baffle 6 corresponding to the rubber sleeve protrusion 9; the rubber sleeve 7 near one end of the front baffle 6 is connected to the front baffle 6 through the rear rubber sleeve protrusion 9 and the second groove 12; the second groove 12 is provided on one side surface of the front baffle 6, which can be connected with the rubber sleeve protrusion 9 of the foremost rubber sleeve 7 to improve the sealing performance of the connection between the front baffle 6 and the rubber sleeve 7.

[0031] The rubber sleeve protrusion 9 is a spherical rubber protrusion; the first slot 10 is an arc-shaped slot; the rear baffle protrusion 11 is a spherical rubber protrusion; the second slot 12 is an arc-shaped slot; in this embodiment, the rubber sleeve protrusion 9 is a spherical rubber protrusion. The spherical protrusion is more conducive to sealing than the cylindrical protrusion or other structures. After the spherical protrusion is squeezed and deformed, it is beneficial to improve the sealing performance and stability of the connection of the connecting parts.

[0032] The guide pipe 1 is provided with a front baffle limiting groove 13; during installation, the front baffle 6 is locked in the front baffle limiting groove; the front baffle limiting groove 13 is beneficial for positioning the front baffle 6 during installation and prevents the front baffle 6 from sliding.

[0033] A support piece 14 is machined at one end of the front baffle limiting groove 13. The support piece 14 is beneficial for further limiting and supporting the front baffle 6.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A leading small catheter rapid grouting joint, characterized in that: It includes a flow guide tube; a squeezing tube and a rubber tube are sequentially fitted around the outer periphery of the flow guide tube along the flow direction; a threaded section is machined on the flow guide tube; a handle is fitted on the threaded section; the inner wall of the handle is machined with an internal thread that mates with the threaded section; when the handle is rotated and moved, it pushes the squeezing tube to move axially along the flow guide tube and squeezes the rubber tube to expand and deform radially; the rubber tube includes a front baffle, several rubber sleeves that are connected end to end, and a rear baffle; the front baffle is connected to the rubber sleeve located at one end; the rear baffle is connected to the rubber sleeve located at the other end.

2. The ahead-of-small-catheter rapid grouting adapter of claim 1, wherein: The rubber tube includes at least two rubber sleeves that fit together end to end.

3. The rapid grouting connector for advanced small guide tubes according to claim 2, characterized in that: One edge of the rubber sleeve is provided with a rubber sleeve protrusion; the other edge of the rubber sleeve is provided with a first groove corresponding to the rubber sleeve protrusion; the front and rear rubber sleeves are connected by the rubber sleeve protrusion and the first groove.

4. The rapid grouting connector for advanced small guide tubes according to claim 3, characterized in that: The rear baffle is a thin rubber sheet; a rear baffle protrusion is provided on one side surface of the rear baffle corresponding to the first slot; the rubber sleeve near one end of the rear baffle is connected to the rear baffle through the first slot and the rear baffle protrusion.

5. The rapid grouting connector for advanced small guide tubes according to claim 4, characterized in that: The front baffle is a thin rubber sheet; a second groove is provided on one side surface of the front baffle corresponding to the protrusion of the rubber sleeve; the rubber sleeve near one end of the front baffle is connected to the front baffle through the engagement of the rear rubber sleeve protrusion and the second groove.

6. The rapid grouting connector for advanced small guide tubes according to claim 5, characterized in that: The rubber sleeve protrusion is a spherical rubber protrusion; the first slot is an arc-shaped slot; the rear baffle protrusion is a spherical rubber protrusion; and the second slot is an arc-shaped slot.

7. The rapid grouting connector for advanced small guide tubes according to claim 6, characterized in that: The guide pipe is provided with a front baffle limiting groove; during installation, the front baffle is locked in the front baffle limiting groove.

8. The rapid grouting connector for advanced small guide tubes according to claim 7, characterized in that: A support plate is machined at one end of the front baffle limiting groove.

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