Advanced small guide pipe grouting joint capable of being quickly disassembled and assembled

Abstract

The utility model discloses an advanced small guide pipe grouting connector capable of being rapidly disassembled and assembled. The advanced small guide pipe grouting connector comprises a conveying pipe, a conical inserting connector, a connecting ring body, an annular electromagnet, a spring, a limiting rod and a limiting nut. Wherein one end of the conical connecting plug is fixedly connected to one end of the conveying pipe, inner cavities of the conical connecting plug and the conveying pipe are communicated, and a slurry outlet is formed in the other end of the conical connecting plug. The conveying pipe is sleeved with the connecting ring body, the connecting ring body and the conveying pipe are fixedly connected, the conveying pipe is sleeved with the annular electromagnet in a sliding mode, and the annular electromagnet is arranged close to the conical connecting plug. The conveying pipe is sleeved with the spring, and the two ends of the spring are connected with the annular electromagnet and the connecting ring body correspondingly. The limiting rod is parallel to the conveying pipe and arranged on the outer side of the side wall of the conveying pipe, one end of the limiting rod is fixedly connected with the annular electromagnet, and the other end of the limiting rod movably penetrates through the connecting ring body and then is in threaded connection with the limiting nut. The grouting joint can be quickly connected with and detached from the advanced small guide pipe, and the grouting construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of tunnel grouting joint, especially to an advanced small catheter grouting joint capable of being quickly disassembled. BACKGROUND

[0002] Tunnel grouting reinforcement is a commonly used tunnel reinforcement technology, which fills the internal space of surrounding rock by injecting grout into the surrounding rock of the tunnel, increases the density and strength thereof, and helps to improve the stability and structural safety of the surrounding rock of the tunnel. The construction steps for grouting mainly include drilling, burying grouting pipes, grouting construction and maintenance. After completion, the consolidated grout cements the broken rock into one, improving the bearing capacity. The advanced small catheter is one of the tools for grouting in the advanced support. When the advanced small catheter is driven into the surrounding rock drilling hole for grouting, the grout conveying pipe needs to be connected with the advanced small catheter. Since the conveyed grout has a certain pressure, it is necessary to ensure good connection between the conveying pipe and the advanced small catheter during grouting to prevent the two from separating under the pressure of the grout, causing leakage of the grout. One of the methods currently used is to weld a grouting nozzle, a grout stop valve and other components on the outer end of the advanced small catheter. After grouting is completed, the grouting nozzle and the grout stop valve need to be cut off from the advanced small catheter. This method not only is complicated in construction, but also increases the time required for the grouting process, reducing the construction efficiency. SUMMARY

[0003] The utility model provides a kind of advanced small catheter grouting joint capable of being quickly disassembled, the joint can be quickly connected and disassembled with advanced small catheter, does not need the cutting process of above-mentioned mode, effectively improve the efficiency of grouting construction. Specifically, the technical scheme of the utility model is as follows.

[0004] A kind of advanced small catheter grouting joint capable of being quickly disassembled, comprising: conveying pipe, tapered plug connector, connecting ring body, annular electromagnet, spring, limit rod and limit nut. Wherein: one end of the tapered plug connector is fixedly connected to one end of the conveying pipe and the inner cavities of the two are communicated, the other end of the tapered plug connector has a grout outlet, and the inner diameter of the pipe opening of the advanced small catheter is between the minimum outer diameter and the maximum outer diameter of the tapered plug connector. The connecting ring body is sleeved on the conveying pipe and the two are fixedly connected, the annular electromagnet is slidably sleeved on the conveying pipe, and the annular electromagnet is arranged close to the tapered plug connector. The spring is sleeved on the conveying pipe, and the two ends of the spring are respectively connected with the annular electromagnet and the connecting ring body. The limit rod is arranged on the outer side of the side wall of the conveying pipe in parallel, and one end of the limit rod is fixedly connected with the annular electromagnet, and the other end is movably threaded through the connecting ring body and threadedly connected with the limit nut.

[0005] Further, the connecting ring body is detachably fixed on the side wall of the conveying pipe by fastener.

[0006] Further, symmetrical fixing handles are fixed on the side wall of the conveying pipe to facilitate the construction personnel to hold the grouting joint.

[0007] Further, the outer end port of the advanced small catheter has a steel annular outer edge plate to be connected with the annular electromagnet.

[0008] Further, the grouting stop component includes a flexible gasket, a pipe and a flexible reducing pipe, wherein the diameter of the flexible gasket is larger than that of the pipe, the two are connected to form a T-shaped pipe, the diameter of the flexible gasket is larger than the outer diameter of the advanced small catheter, and the outer diameter of the pipe is smaller than the inner diameter of the advanced small catheter.

[0009] Further, the smaller end of the flexible reducing pipe is bent or curved to better stop grouting.

[0010] Further, the material of the flexible gasket includes any one of rubber, flexible plastic and the like, the material of the flexible reducing pipe includes silica gel and the like, and the material of the pipe includes heat fixed plastic and the like.

[0011] Further, the materials of the conveying pipe, the conical plug joint, the connecting ring body, the spring, the limiting rod and the limiting nut are aluminum alloy or copper alloy.

[0012] Compared with the prior art, the advanced small catheter grouting joint with quick disassembly and assembly of the utility model can be directly inserted into the outer port of the advanced small catheter through the conical plug joint, and then connected with the advanced small catheter through the annular electromagnet and the annular outer edge plate on the outer port of the advanced small catheter. After grouting is completed, the power supply of the annular electromagnet is disconnected, so that the annular electromagnet is reset under the action of the spring and separated from the advanced small catheter. The grouting joint can be quickly connected and disassembled with the advanced small catheter, and the efficiency of grouting construction is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] The drawings constituting a part of the specification of the utility model are used to provide further understanding of the utility model, and the illustrative embodiments of the utility model and the description thereof are used to explain the utility model and do not constitute improper limitation on the utility model.

[0014] Figure 1 It is a structure schematic view of the advanced small catheter grouting joint with quick disassembly and assembly in the embodiment.

[0015] Figure 2 It is a top view of the connecting ring body in the embodiment.

[0016] Figure 3 Figure 1 is a schematic diagram of the use state of the quick detachable advanced small catheter grouting joint in the embodiment.

[0017] Figure 4 Figure 1 is a schematic diagram of the use state of the quick detachable advanced small catheter grouting joint in the embodiment.

[0018] The marks in the drawings represent: 1-conveying pipe, 2-tapered plug joint, 3-connection ring body, 4-annular electromagnet, 5-spring, 6-limiting rod, 7-limiting nut, 8-advanced small catheter, 9-annular outer edge plate, 10-flexible gasket ring, 11-insertion pipe, 12-flexible reducing pipe, 101-grip handle, 301-through hole, 302-fastener. DETAILED DESCRIPTION

[0019] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise indicated, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0020] For the convenience of description, if "up", "down", "left" and "right" are mentioned in the present application, they only represent the same direction as the up, down, left and right directions of the drawings themselves, and do not limit the structure, but only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application.

[0021] Reference Figure 1 and Figure 2 , an example of a quick detachable advanced small catheter grouting joint, comprising: a conveying pipe 1, a tapered plug joint 2, a connection ring body 3, an annular electromagnet 4, a spring 5, a limiting rod 6 and a limiting nut 7. Specifically: the upper end / larger diameter end of the tapered plug joint 2 is fixedly connected with the conveying pipe 1 and the inner cavities of the two are in communication, and the lower end / smaller diameter end of the tapered plug joint 2 has a grouting outlet for conveying grout. In order to enable the tapered plug joint 2 to be butt-jointed with the pipe opening of the advanced small catheter 8, the inner diameter of the pipe opening of the advanced small catheter 8 is between the minimum outer diameter and the maximum outer diameter of the tapered plug joint 2, so that the tapered plug joint 2 can be inserted into the advanced small catheter 8, and at the same time, it can adapt to butt-joint with advanced small catheters 8 of different pipe diameters, thereby improving the application range of the grouting joint.

[0022] The connecting ring body 3 is a circular ring structure, which is sleeved on the conveying pipe 1 and fixedly connected with the conveying pipe 1. The annular electromagnet 4 is slidably sleeved on the conveying pipe 1, and the annular electromagnet 4 is arranged close to the tapered plug joint 2, that is, the annular electromagnet 4 is located between the tapered plug joint 2 and the connecting ring body 3. The spring 5 is sleeved on the conveying pipe 1, and the two ends of the spring 5 are respectively connected with the annular electromagnet 4 and the connecting ring body 3. Under the action of the spring 5, the annular electromagnet 4 can reciprocate along the conveying pipe 1. The limiting rods 6 are at least two, which are symmetrically arranged on the outer side of the side wall of the conveying pipe 1 and parallel to each other.

[0023] One end of the limiting rod 6 is fixedly connected to the outer shell of the annular electromagnet 4, and the other end of the limiting rod 6 is movably inserted into the through hole 301 of the connecting ring body 3 and then sleeved with the limiting nut 7. The side wall of the limiting rod 6 has external threads, which are threadedly connected with the limiting nut 7, and the limiting rod 6 can slide along the through hole 301. The conveying pipe 1, the tapered plug joint 2, the connecting ring body 3, the spring 5, the limiting rod 6 and the limiting nut 7 can be made of aluminum alloy or copper alloy, which has better anti-rust ability in a humid environment.

[0024] Reference Figure 3 In use, first, the tapered plug joint 2 is inserted into the advanced small catheter 8, and the outer end of the advanced small catheter 8 has a steel annular outer edge plate 9. Since the inner diameter of the pipe opening of the advanced small catheter 8 is between the minimum outer diameter and the maximum outer diameter of the tapered plug joint 2, when the tapered plug joint 2 enters to a certain extent, it cannot continue to enter due to the limitation of the pipe opening of the advanced small catheter 8, at this time, the outer wall of the tapered plug joint 2 and the inner wall of the pipe opening of the advanced small catheter 8 are in close contact, which helps to prevent slurry leakage. Then, the annular electromagnet 4 is pulled to be attached to the annular outer edge plate 9 of the advanced small catheter 8, and after the power switch of the annular electromagnet 4 is turned on, the annular outer edge plate 9 and the annular electromagnet 4 are tightly adsorbed and fixed together, and the power switch can be arranged on the outer wall of the conveying pipe 1. Then, the limiting nut 7 is rotated to tightly press on the connecting ring body 3, that is, the connection of the tapered plug joint 2 and the advanced small catheter 8 is completed. Then, the grouting pump is started to inject the slurry into the advanced small catheter 8 through the conveying pipe 1 and the tapered plug joint 2, and then the slurry enters the drill hole from the slurry outlet hole on the side wall of the advanced small catheter 8 and penetrates into the surrounding rock mass. After the grouting is completed, the annular electromagnet 4 is turned off and reset under the action of the spring 5, and then the tapered plug joint 2 is taken out of the advanced small catheter 8. The grouting joint of the embodiment can be quickly connected and detached with the advanced small catheter 8, which effectively improves the efficiency of grouting construction.

[0025] In another embodiment, reference Figure 1The side wall of the connecting ring body 3 in the above embodiment is provided with a positioning screw hole, and a fastener 302, such as a bolt, is screwed into the positioning screw hole, so that the connecting ring body 3 is detachably fixed to the side wall of the conveying pipe 1, facilitating the installation and position adjustment of the connecting ring body 3.

[0026] In another embodiment, referring to Figure 1 The side wall of the conveying pipe 1 in the above embodiment is symmetrically provided with a handle 101 on both sides, so as to facilitate the worker to hold the handle during operation.

[0027] In another embodiment, the quick detachable advanced small-diameter pipe grouting joint in the above embodiment further comprises a grouting stopping component. Referring to Figure 4 The grouting stopping component comprises a flexible gasket 10, a pipe 11 and a flexible reducing pipe 12. The diameter of the flexible gasket 10 is greater than the diameter of the pipe 11, and the two are connected to form a "T"-shaped pipe. The diameter of the flexible gasket 10 is greater than the outer diameter of the advanced small-diameter pipe 8, and the outer diameter of the pipe 11 is smaller than the inner diameter of the pipe opening of the advanced small-diameter pipe 8, so that after the "T"-shaped pipe is inserted into the pipe opening of the advanced small-diameter pipe 8, the flexible gasket 10 is attached to the annular outer edge plate 9. The larger end of the pipe opening of the flexible reducing pipe 12 is sleeved on the "T"-shaped pipe and the two are sealingly and fixedly connected, and the smaller end of the pipe opening of the flexible reducing pipe 12 is in a closed state. In this embodiment, the material of the flexible gasket 10 can be selected from rubber, flexible plastic and the like. The material of the pipe 11 is heat-set plastic. The flexible reducing pipe 12 is made of silica gel, which has good flexibility.

[0028] In use, the above grouting stopping component of the present embodiment is first installed into the pipe opening of the advanced small-diameter pipe 8, at this time the flexible gasket 10 is attached to the annular outer edge plate 9 (see Figure 3 ), and the pipe 11 and the flexible reducing pipe 12 are both located in the advanced small-diameter pipe 8. Then the tapered plug-in joint 2 and the advanced small-diameter pipe 8 are connected in the manner described above. At this time, the flexible gasket 10 is compressed between the annular electromagnet 4 and the annular outer edge plate 9 and also functions as a sealing ring, thereby better preventing grout leakage. At the same time, since the grout has a certain pressure during grouting, it can expand the port of the flexible reducing pipe 12 in a closed state, and then enter the advanced small-diameter pipe 8. When the grouting is completed, the smaller end of the pipe opening of the flexible reducing pipe 12 is no longer under the pressure of the grout and is re-closed, thereby preventing the grout in the advanced small-diameter pipe 8 from leaking, and the grouting stopping component can be removed from the advanced small-diameter pipe 8 when the grout loses its fluidity and becomes semi-solid.

[0029] In another embodiment, referring to Figure 4The smaller end of the flexible reducing pipe 12 in the above embodiment is bent or curved, thereby better preventing slurry leakage in the leading small catheter 8.

[0030] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A detachable advanced small catheter grouting joint, characterized in that, include: delivery pipe; A conical plug connector, one end of which is fixedly connected to one end of the delivery pipe and the inner cavities of the two are in communication, the other end of the conical plug connector has a slurry outlet, and the inner diameter of the tube opening of the advance small catheter is between the minimum outer diameter and the maximum outer diameter of the conical plug connector; A connecting ring body, which is sleeved on the delivery pipe and the two are fixedly connected; an annular electromagnet, the annular electromagnet being slidably sleeved on the delivery pipe and being disposed near the tapered plug connector; a spring, the spring being sleeved on the delivery pipe, and the two ends of the spring being respectively connected to the annular electromagnet and the connecting ring body; A limiting rod is arranged parallel to the conveying pipe and on the outer side of the side wall thereof, and one end of the limiting rod is fixedly connected to the annular electromagnet, and the other end is movable through the connecting ring body and is threadedly connected to the limiting nut.

2. The detachable advanced small catheter grouting joint according to claim 1, characterized in that, The connecting ring body is detachably fixed to the side wall of the delivery pipe by fasteners.

3. The detachable advanced small catheter grouting joint according to claim 1, characterized in that, Gripping handles are symmetrically fixed on both sides of the side wall of the delivery pipe to facilitate construction workers to grip the grouting joint.

4. The detachable advanced mini-catheter injection joint of claim 1, wherein, The outer end pipe opening of the leading small conduit is provided with a steel annular outer edge plate.

5. The quick detachable ahead catheter tube grouting joint according to any one of claims 1-4, characterized in that, It also includes a slurry-stopping component, which includes a flexible gasket, a cannula and a flexible reducer; wherein: the diameter of the flexible gasket is larger than the diameter of the cannula, the two are connected to form a "T"-shaped cannula, and the diameter of the flexible gasket is larger than the outer diameter of the advance small catheter, and the outer diameter of the cannula is smaller than the inner diameter of the advance small catheter; the larger end of the flexible reducer is placed on the "T"-shaped cannula, and the smaller end of the flexible reducer is in a closed state.

6. The quick detachable ahead mini-catheter grouting joint according to claim 5, characterized in that, The smaller end of the flexible reducer is bent or curved.

7. The detachable advanced mini-catheter injection joint of claim 5, wherein, The material of the flexible gasket includes any one of rubber and flexible plastic; the material of the flexible reducer includes silicone; and the material of the cannula includes thermosetting plastic.

8. The quick detachable ahead catheter tube grouting joint according to any one of claims 1-4, characterized in that, The material of the delivery pipe, the tapered plug joint, the connecting ring, the spring, the limiting rod and the limiting nut is aluminum alloy or copper alloy.

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