Pipe shed quick grouting joint adaptive to multiple pipe diameters

Abstract

The invention provides a pipe shed quick grouting joint adaptive to multiple pipe diameters, which comprises a connecting pipe, a plurality of connecting pipes and a plurality of connecting pipes, and one end of the connecting pipe is used for being connected with a grouting pipe quick joint in a matched manner; the plugging head is arranged at the end, deviating from the grouting pipe quick connector, of the connecting pipe in a sleeving mode, the plugging head is of a conical gradual change structure, and the end, with the smaller diameter, of the plugging head deviates from the grouting pipe quick connector; the movable fixing mechanism is provided with a supporting plate which is arranged on the outer side of the connecting pipe and corresponds to the end, with the larger diameter, of the plugging head, two pull rods are symmetrically arranged on the supporting plate, one end of each pull rod is provided with a right-angle elbow used for being hung on a steel frame, and the other end of each pull rod is provided with a right-angle elbow used for being hung on the steel frame. An adjusting nut is arranged on the outer side of the other end of the pull rod; the device can adapt to various pipe diameters, and is fast in installation, strong in sealing, stable, fixed and resistant to high pressure.

Description

Technical Field

[0001] This invention belongs to the field of pipe roof grouting technology, specifically relating to a quick grouting joint for pipe roofs that is compatible with multiple pipe diameters. Background Technology

[0002] In tunnel excavation, underground utility tunnel construction, and mine roadway support projects, pipe roof and small-diameter pipe grouting technology is the core means to control surrounding rock deformation and prevent collapse.

[0003] Traditional grouting joints generally suffer from three major pain points:

[0004] First, the adaptability is poor. A single type of connector can only match a specific pipe diameter. When dealing with pipe sheds of various specifications such as D42 to D89, frequent replacements are required, which seriously affects construction efficiency.

[0005] Secondly, the sealing performance is unstable and is prone to leakage due to the influence of installation accuracy, resulting in grout waste and grouting pressure loss.

[0006] Third, the fixing method is cumbersome, the connection with the steel arch frame requires multiple procedures, and it is prone to loosening during high-pressure grouting. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a quick-installation, strong-sealing, stable, and high-pressure-resistant pipe roof quick-grouting joint suitable for multiple pipe diameters.

[0008] The technical solution of this invention is: a quick grouting joint for pipe roofs with multiple pipe diameters, comprising:

[0009] A connecting pipe, one end of which is used to connect with a quick connector for a grouting pipe;

[0010] A plugging head is fitted onto the connecting pipe at one end away from the quick connector of the grouting pipe. The plugging head has a tapered, gradually changing structure, with the smaller diameter end of the plugging head facing away from the quick connector of the grouting pipe.

[0011] A movable fixing mechanism has a support plate corresponding to the larger diameter end of the sealing head and disposed on the outside of the connecting pipe. Two tie rods are symmetrically arranged on the support plate. One end of the tie rod is provided with a right-angle elbow for hanging on the steel frame, and the other end of the tie rod is provided with an adjusting nut.

[0012] Furthermore, the support plate is symmetrically provided with strip grooves, one end of the pull rod passes through the support plate through the strip grooves, and an adjusting nut is installed on the pull rod on the side of the support plate opposite to the right angle bend.

[0013] Furthermore, the outer side of the end of the pull rod opposite to the right-angle bend is provided with an external thread that matches the adjusting nut.

[0014] Furthermore, the smaller diameter end of the sealing head has a profile diameter of 2.4cm, the larger diameter end of the sealing head has a profile diameter of 10cm, and the length between the two ends of the sealing head is 13cm.

[0015] Furthermore, the right-angle elbow has a hanging rod perpendicular to the tie rod, and a sleeve is rotatably fitted on the outer side of the hanging rod. A pressure plate parallel to the axis of the hanging rod is fixedly provided on one side of the sleeve.

[0016] Furthermore, a pad is fixedly provided on the side of the pressure plate opposite to the sleeve, and magnets are symmetrically arranged on the pad.

[0017] Furthermore, a magnet support plate is fixedly provided on the side of the magnet near the pressure plate, and a slide rod is vertically fixed on the side of the magnet support plate away from the magnet, and the slide rod is vertically slidably connected to the pressure plate.

[0018] Furthermore, a spring is provided on the side of the pressure plate opposite to the magnet for applying elastic force to the slide rod along its axial direction.

[0019] Furthermore, a baffle is fixedly provided on the outer side of the slide rod, and a sleeve matching the baffle is fixedly provided on one side of the pressure plate. The baffle is slidably disposed inside the sleeve, and a retaining ring is fixedly provided on the end of the sleeve facing away from the pressure plate. The interior of the retaining ring matches the slide rod.

[0020] Furthermore, an arc-shaped limiting groove is formed on the side of the sleeve facing away from the pressure plate, and a stop block is fixedly provided on one side of the hanging rod inside the limiting groove.

[0021] The beneficial effects of this invention are:

[0022] (1) In this invention, the sealing head can adapt to the outer wall of the pipe roof / small conduit within a certain range through elastic deformation. When in contact with different pipe diameters, the inner wall of the rubber cone can generate adaptive compression with the change of pipe diameter to form an annular sealing band. The sealing pressure meets the engineering grouting pressure requirements. As the direct contact component between the joint and the pipe roof, its core function is to achieve gapless sealing through elastic compression. At the same time, the guiding nature of the cone structure reduces the difficulty of aligning the joint with the pipe roof opening during installation.

[0023] (2) In the movable fixing mechanism, the connection length of the tie rod can be adjusted by adjusting the nut. It can be clamped onto the flange of common steel arch frames such as I10 to I22 by the right angle elbow. During installation, by adjusting the extension length of the tie rods on both sides, the sealing head is forced to press against the pipe roof opening. The tension of the tie rod is converted into the positive pressure between the sealing head and the outer wall of the pipe roof, causing the rubber cone to undergo radial compression deformation, and finally forming a stable seal.

[0024] (3) The rigid connection between the end of the railing and the steel arch frame through the right-angle elbow can resist the reaction force during grouting, ensuring that the joint as a whole does not shift or loosen. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of one embodiment of the quick grouting joint for pipe roofs adapted to multiple pipe diameters in this invention.

[0026] Figure 2 This is one of the structural schematic diagrams of another embodiment of the quick grouting joint for pipe roofs adapted to multiple pipe diameters in this invention.

[0027] Figure 3 This is one of the structural schematic diagrams of another embodiment of the quick grouting joint for pipe roofs adapted to multiple pipe diameters in this invention.

[0028] Figure 4 for Figure 3 Cross-sectional view at point AA.

[0029] Figure 5 for Figure 4 A magnified view of a section at point B in the middle. Detailed Implementation

[0030] Various exemplary embodiments of the invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the invention or its application or use. The invention can be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the invention thorough and complete, and to fully express the scope of the invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0031] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, without excluding the possibility of encompassing other elements. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] like Figure 1As shown, a quick grouting connector for pipe sheds adapted to multiple pipe diameters is disclosed, comprising: a connecting pipe 2, one end of which is used to connect with a quick grouting pipe connector 3; a plugging head 1, which is fitted onto the connecting pipe 2 at one end away from the quick grouting pipe connector 3, the plugging head 1 having a tapered, tapered structure, with the smaller diameter end of the plugging head 1 facing away from the quick grouting pipe connector 3; and a movable fixing mechanism 4, which has a support plate 41 corresponding to the larger diameter end of the plugging head 1 and disposed on the outside of the connecting pipe 2, with two tie rods symmetrically arranged on the support plate 41, one end of the tie rod 42 having a right-angle elbow 43 for hanging on a steel frame, and the other end of the tie rod 42 having an adjusting nut 44 disposed on the outside; in this embodiment, the plugging head 1 can adapt to the outer wall of the pipe shed / small conduit within a certain range through elastic deformation, and when in contact with different pipe diameters, the inner wall of the rubber cone can change with the pipe diameter. Adaptive compression forms an annular sealing band, and the sealing pressure meets the grouting pressure requirements of the project. As the direct contact component between the joint and the pipe roof, its core function is to achieve a gapless seal through elastic compression. At the same time, the guiding nature of the conical structure reduces the difficulty of aligning the joint with the pipe roof opening during installation. In the movable fixing mechanism 4, the connection length of the tie rod 42 can be adjusted by adjusting the nut. The right-angle elbow 43 can be clamped onto the flange of common steel arch frames such as I10 to I22. During installation, by adjusting the extension length of the tie rods 42 on both sides, the sealing head 1 is forced to press towards the pipe roof opening. The tension of the tie rod 42 is converted into the positive pressure between the sealing head 1 and the outer wall of the pipe roof, causing the rubber cone to undergo radial compression deformation, ultimately forming a stable seal. At the same time, the rigid connection between the end of the railing 42 and the steel arch frame through the right-angle elbow 43 can resist the reaction force during grouting, ensuring that the joint as a whole does not shift or loosen.

[0033] The steps for using the multi-diameter quick grouting joint for pipe roofs in the above embodiments are as follows: Install the sealing head 1 on the pre-grouting pipe roof opening, fix the quick grouting joint on the steel arch frame through the movable fixing mechanism 2, and at the same time force the rubber conical sealing head 1 to be elastically pressed with the pipe roof opening to prevent grout leakage. Then connect the grouting pump outlet pipe to the connecting pipe 3 through the quick grouting pipe connector 3, and then perform grouting.

[0034] In some embodiments, the support plate 41 is symmetrically provided with strip grooves 45, one end of the tie rod 42 passes through the support plate 41 through the strip groove 45, and the tie rod 42 on the side of the support plate 41 away from the right angle bend 43 is equipped with an adjusting nut 44; the strip groove 45 can be used to adjust the distance between the two tie rods 42 to match steel arch frames of different specifications.

[0035] In some embodiments, the outer side of the end of the pull rod 42 away from the right-angle bend 43 is provided with an external thread that matches the adjusting nut 44; the adjusting nut 44 is threadedly connected to the pull rod 42 through the external thread.

[0036] In some embodiments, the smaller diameter end of the plugging head 1 has a profile diameter of 2.4 cm, the larger diameter end of the plugging head 1 has a profile diameter of 10 cm, and the length between the two ends of the plugging head 1 is 13 cm. The plugging head 1 can be adapted to the outer wall of the pipe roof / small conduit within the range of D42 to D89 through elastic deformation.

[0037] In some embodiments, such as Figures 2 to 5 As shown, the right-angle elbow 43 has a hanging rod 431 perpendicular to the tie rod 42. A sleeve 57 is rotatably fitted on the outer side of the hanging rod 431. A pressure plate 52 parallel to the axis of the hanging rod 431 is fixedly installed on one side of the sleeve 57. The pressure plate 52 can increase the contact area between the hanging rod 431 and the steel arch frame, thereby improving the connection stability. The pressure plate 52 is rotatably connected to the hanging rod 431 through the sleeve 57 and can automatically rotate and adjust when in contact with the steel arch frame, so that the pressure plate 52 and the steel arch frame are in close contact.

[0038] In some embodiments, a pad 53 is fixedly provided on the side of the pressure plate 52 away from the sleeve 51, and magnets 54 are symmetrically provided on the pad 53. When installing this connector, the magnets 54 can temporarily attract and fix the hanging rod 431 to one side of the steel arch frame, so as to prevent the hanging rod 431 from falling off the steel arch frame and affecting the adjustment when the adjusting nut 44 is rotated.

[0039] In some embodiments, a magnet support plate 55 is fixedly provided on the side of the magnet 54 near the pressure plate 52, and a slide rod 56 is vertically fixed on the side of the magnet support plate 55 away from the magnet. The slide rod 56 is vertically slidably connected to the pressure plate 52. The magnet support plate 55 is used to provide support for the magnet 54. There is a gap between the magnet support plate 55 and the pressure plate 52. The total thickness of the magnet 54 and the magnet support plate 55 is less than the thickness of the pad 53. Before installation, the pressure plate 52 is attracted to one side of the steel arch frame by the magnet 54. During the tightening of the adjusting nut 44, the slide rod 56 slides, and the pressure plate 52 and the pad 53 gradually come into contact with one side of the steel arch frame to form a stable connection support.

[0040] In some embodiments, a spring 59 is provided on the side of the pressure plate 52 away from the magnet 54 for applying elastic force to the slide rod along the axial direction. The spring 59 applies elastic force to the slide rod 56 so that the magnet 54 can remain extended out of the pad 53, so as to be temporarily fixed to one side of the steel arch frame.

[0041] In some embodiments, a baffle 58 is fixedly provided on the outer side of the slide rod 56, and a sleeve 57 matching the baffle 58 is fixedly provided on one side of the pressure plate 52. The baffle 58 is slidably disposed inside the sleeve 57. A retaining ring 571 is fixedly provided on one end of the sleeve 57 away from the pressure plate 52. The inside of the retaining ring 571 matches the slide rod 56. The retaining ring 571 provides support for one end of the spring 59. The other end of the spring 59 abuts against the baffle 58 and applies elastic force to the slide rod 56, so that the magnet 54 can remain extended out of the pad 53.

[0042] In some embodiments, an arc-shaped limiting groove 511 is formed on the side of the sleeve 57 away from the pressure plate 52. A stop block 432 is fixedly provided on one side of the hanging rod 431 inside the limiting groove 511. The limiting groove 511 and the stop block 432 cooperate to limit the rotation angle of the pressure plate 52, thereby improving the ease of installation.

[0043] In the above embodiments, the plugging head 1 is made of highly elastic wear-resistant rubber, which has both excellent elastic deformation ability and anti-aging properties, and can withstand the chemical corrosion of common grouting materials such as cement slurry and water glass.

[0044] The various embodiments of the present invention have now been described in detail. To avoid obscuring the concept of the invention, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solutions disclosed herein based on the above description.

[0045] The embodiments described above only illustrate some implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A quick grouting joint for pipe roofs adapted to multiple pipe diameters, characterized in that, include: A connecting pipe, one end of which is used to connect with a quick connector for a grouting pipe; A plugging head is fitted onto the connecting pipe at one end away from the quick connector of the grouting pipe. The plugging head has a tapered, gradually changing structure, with the smaller diameter end of the plugging head facing away from the quick connector of the grouting pipe. A movable fixing mechanism has a support plate corresponding to the larger diameter end of the sealing head and disposed on the outside of the connecting pipe. Two tie rods are symmetrically arranged on the support plate. One end of the tie rod is provided with a right-angle elbow for hanging on the steel frame, and the other end of the tie rod is provided with an adjusting nut.

2. The quick grouting joint for pipe roofs adapted to multiple pipe diameters as described in claim 1, characterized in that: The support plate is symmetrically provided with strip grooves, and one end of the pull rod passes through the support plate through the strip groove. An adjusting nut is installed on the pull rod on the side of the support plate opposite to the right angle bend.

3. The quick grouting joint for pipe roofs adapted to multiple pipe diameters as described in claim 2, characterized in that: The pull rod has an external thread on the outer side of the end opposite to the right-angle bend, which matches the adjusting nut.

4. The quick grouting joint for pipe roofs adapted to multiple pipe diameters as described in claim 1, characterized in that: The smaller diameter end of the sealing head has a profile diameter of 2.4cm, the larger diameter end has a profile diameter of 10cm, and the length between the two ends of the sealing head is 13cm.

5. The quick grouting joint for pipe roofs adapted to multiple pipe diameters as described in claim 1, characterized in that: The right-angle elbow has a hanging rod perpendicular to the tie rod. A sleeve is rotatably fitted on the outer side of the hanging rod, and a pressure plate parallel to the axis of the hanging rod is fixedly provided on one side of the sleeve.

6. The quick grouting joint for pipe roofs adapted to multiple pipe diameters as described in claim 5, characterized in that: A pad is fixedly provided on the side of the pressure plate opposite to the sleeve, and magnets are symmetrically arranged on the pad.

7. The quick grouting joint for pipe roofs adapted to multiple pipe diameters as described in claim 6, characterized in that: A magnet support plate is fixedly installed on the side of the magnet near the pressure plate, and a slide rod is vertically fixed on the side of the magnet support plate away from the magnet. The slide rod is vertically slidably connected to the pressure plate.

8. The quick grouting joint for pipe roofs adapted to multiple pipe diameters as described in claim 7, characterized in that: A spring is provided on the side of the pressure plate opposite to the magnet for applying elastic force to the slide rod along its axial direction.

9. The quick grouting joint for pipe roofs adapted to multiple pipe diameters as described in claim 8, characterized in that: A baffle is fixedly installed on the outer side of the slide rod, and a sleeve matching the baffle is fixedly installed on one side of the pressure plate. The baffle is slidably installed inside the sleeve. A retaining ring is fixedly installed on the end of the sleeve facing away from the pressure plate, and the inside of the retaining ring matches the slide rod.

10. The quick grouting joint for pipe roofs adapted to multiple pipe diameters according to claim 5, characterized in that: An arc-shaped limiting groove is formed on the side of the sleeve opposite to the pressure plate, and a stop block is fixedly installed on one side of the hanging rod inside the limiting groove.

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