Reusable quick grouting joint for tunnel grouting reinforcement

Abstract

The reusable rapid grouting connector comprises a ball valve, the right end of the inner surface of the ball valve is in threaded connection with a first steel pipe, a second steel pipe is welded to the right side of the first steel pipe, and a plurality of reserved grooves distributed at equal intervals are formed in the left end of the outer surface of the second steel pipe. The first steel pipe is in threaded connection with the right side of the ball valve, the output end of the grouting machine is in threaded connection with the left side of the ball valve, then the second steel pipe is inserted into the grouting steel pipe, the first steel pipe can integrally enter the grouting steel pipe under the cooperation of the open groove, and then the hoop is clamped at the left end of the grouting steel pipe; the first steel pipe and the grouting steel pipe are firmly connected under the cooperation of a screw rod, a nut and a mounting hole, a gap between the second steel pipe and the grouting steel pipe can be filled with an arc-shaped rubber plate under the cooperation of the arc-shaped rubber plate, a spring and a preformed groove, and the situation that a grouting head cannot be detached due to grout pollution does not exist; and repeated utilization of the grouting head is really realized.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, in particular to a reusable quick grouting joint for tunnel grouting reinforcement. Background Art

[0002] During the tunnel construction process, if the geology or surrounding rock ahead is poor, grouting reinforcement is often required. The methods include pipe-roof grouting, small-duct grouting, curtain grouting, radial grouting, etc. The basic process is to drill a hole first, then insert a pipe, plug the gap in the hole, connect the grouting head, and grouting. There are currently two commonly used grouting heads. One is directly welded to the steel pipe inserted into the hole. The subsequent grouting head remains on the steel pipe permanently or is cut off and can only be used once; the other is to connect the grouting head to the steel pipe through a thread. This type of grouting head can theoretically be reused, but since the grouting head must wait for the slurry to solidify before being removed, it is often scrapped because the thread head is contaminated by the slurry and cannot be screwed out, making it difficult to truly reuse it. For this reason, we propose a reusable quick grouting joint for tunnel grouting reinforcement. Summary of the invention

[0003] The object of the present invention is to provide a reusable quick grouting joint for tunnel grouting reinforcement to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a reusable quick grouting joint for tunnel grouting reinforcement, comprising a ball valve, a first steel pipe being threadedly connected to the right end of the inner surface of the ball valve, and a second steel pipe being welded to the right side of the first steel pipe, a plurality of equally spaced reserved grooves being provided at the left end of the outer surface of the second steel pipe, a spring being fixedly connected to the inner cavity of the reserved groove, and an arc-shaped rubber plate being fixedly connected to the outer side of the spring.

[0005] Preferably, the inner diameters of the first steel pipe and the second steel pipe are the same, and the outer diameter of the first steel pipe is 1 cm longer than the outer diameter of the second steel pipe.

[0006] Preferably, the material of the arc-shaped rubber plates is fluorocarbon rubber, the number of the arc-shaped rubber plates is multiple groups arranged at equal intervals, the multiple groups of arc-shaped rubber plates are distributed in a ring shape, and the number of arc-shaped rubber plates in each group is multiple and arranged at equal intervals.

[0007] Preferably, there are two springs on the surface of each arc-shaped rubber plate, and a first clamping groove is provided on the outer surface of the second steel tube and located in the middle of the two reserved grooves. The inner cavity of the first clamping groove is slidably connected to a first clamping rod, and the outer side of the first clamping rod is fixedly connected to the inner side of the arc-shaped rubber plate.

[0008] Preferably, the inner cavity of the second steel pipe is provided with second clamping grooves on both sides of the first clamping groove, the inner cavity of the second clamping groove is slidably connected with a second clamping rod, and the inner side of the second clamping rod is fixedly connected to the lower end of the outer side of the first clamping rod.

[0009] Preferably, it also includes a grouting steel pipe, and an open groove is opened at the left end of the inner surface of the grouting steel pipe, and the width of the open groove is 5 mm.

[0010] Preferably, it also includes a hoop, the lower end of the inner surface of the hoop is provided with a mounting hole, the inner surface of the mounting hole is plugged with a screw, and the end of the screw is threadedly connected with a nut.

[0011] Preferably, the inner surfaces of the ball valve, the first steel pipe and the second steel pipe, and the outer surface of the second steel pipe are all coated with an isolation coating, which is composed of talc, graphite, boron nitride, sodium silicate, vegetable oil, fatty acid, stearate, hydrated silicon dioxide and metal terephthalate, and its components in parts by weight are: 35-45 parts of talc; 20-30 parts of graphite; 10-25 parts of boron nitride; 6-15 parts of sodium silicate; 5-10 parts of vegetable oil; 10-20 parts of fatty acid; 3-8 parts of stearate; 8-20 parts of hydrated silicon dioxide; 25-50 parts of metal terephthalate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The present invention connects the first steel pipe to the right side of the ball valve through a thread, connects the output end of the grouting machine to the left side of the ball valve through a thread, and then inserts the second steel pipe into the grouting steel pipe. With the cooperation of the open groove, the first steel pipe can enter the grouting steel pipe as a whole, and then the hoop is clamped at the left end of the grouting steel pipe. With the cooperation of the screw rod, the nut and the mounting hole, the first steel pipe and the grouting steel pipe are firmly connected. With the cooperation of the arc-shaped rubber plate, the spring and the reserved groove, the arc-shaped rubber plate can fill the gap between the second steel pipe and the grouting steel pipe. There is no situation in which the grouting head cannot be removed due to slurry contamination, and the grouting head can be truly reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Explosion for the present invention Figure 1 ;

[0015] Figure 2 Explosion for the present invention Figure 2 ;

[0016] Figure 3 This is a schematic diagram of the structure of the first card slot of the present invention;

[0017] Figure 4 It is a schematic diagram of the isolation coating structure of the present invention.

[0018] In the figure: ball valve 1, first steel pipe 2, second steel pipe 3, screw 4, hoop 5, arc rubber plate 6, grouting steel pipe 7, nut 8, mounting hole 9, open groove 10, second clamping groove 11, reserved groove 12, first clamping groove 13, first clamping rod 14, second clamping rod 15, spring 16, isolation coating 17. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The ball valve 1, first steel pipe 2, second steel pipe 3, screw 4, hoop 5, arc rubber plate 6, grouting steel pipe 7, nut 8, mounting hole 9, open groove 10, second clamping groove 11, reserved groove 12, first clamping groove 13, first clamping rod 14, second clamping rod 15, spring 16 and isolation coating 17 components of the present application are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0021] See also Figure 1-Figure 4 A reusable quick grouting joint for tunnel grouting reinforcement includes a ball valve 1, a first steel pipe 2 is threadedly connected to the right end of the inner surface of the ball valve 1, and a second steel pipe 3 is welded to the right side of the first steel pipe 2, and a plurality of equally spaced reserved grooves 12 are opened at the left end of the outer surface of the second steel pipe 3, a spring 16 is fixedly connected to the inner cavity of the reserved groove 12, and an arc-shaped rubber plate 6 is fixedly connected to the outer side of the spring 16.

[0022] The inner diameters of the first steel tube 2 and the second steel tube 3 are the same, and the outer diameter of the first steel tube 2 is 1 cm longer than the outer diameter of the second steel tube 3. The material of the arc-shaped rubber plate 6 is fluorocarbon rubber. The number of the arc-shaped rubber plates 6 is multiple groups of equidistant arrangements. The multiple groups of arc-shaped rubber plates 6 are distributed in a ring shape, and the number of arc-shaped rubber plates 6 in each group is multiple equidistant arrangements. The number of springs 16 on the surface of each arc-shaped rubber plate 6 is two. The outer surface of the second steel tube 3 is provided with a first card slot 13 located in the middle of the two reserved slots 12. The inner cavity of the first clamping groove 13 is slidably connected with the first clamping rod 14, and the outer side of the first clamping rod 14 is fixedly connected to the inner side of the arc-shaped rubber plate 6. The inner cavity of the second steel pipe 3 and the two sides of the first clamping groove 13 are provided with second clamping grooves 11, and the inner cavity of the second clamping groove 11 is slidably connected with the second clamping rod 15, and the inner side of the second clamping rod 15 is fixedly connected to the lower end of the outer side of the first clamping rod 14. It also includes a grouting steel pipe 7, and the left end of the inner surface of the grouting steel pipe 7 is provided with an open groove 10. If the grouting head is caused by an accident If the grouting steel pipe 7 is contaminated, the grouting head can be torn open from the opening groove 10 without causing damage to the grouting head. The width of the opening groove 10 is 5 mm. It also includes a hoop 5. The lower end of the inner surface of the hoop 5 is provided with a mounting hole 9. The inner surface of the mounting hole 9 is plugged with a screw 4, and the end of the screw 4 is threadedly connected with a nut 8. The inner surfaces of the ball valve 1, the first steel pipe 2 and the second steel pipe 3, and the outer surface of the second steel pipe 3 are all coated with an isolation coating 17, which can facilitate the removal of the second steel pipe 3 from the grouting steel pipe 7. In order to facilitate the flow of materials, the isolation coating 17 is composed of talc, graphite, boron nitride, sodium silicate, vegetable oil, fatty acid, stearate, hydrated silicon dioxide and metal terephthalate, and its components in weight parts are: 35-45 parts of talc; 20-30 parts of graphite; 10-25 parts of boron nitride; 6-15 parts of sodium silicate; 5-10 parts of vegetable oil; 10-20 parts of fatty acid; 3-8 parts of stearate; 8-20 parts of hydrated silicon dioxide; 25-50 parts of metal terephthalate.

[0023] The working principle of the present application is: the first steel pipe 2 is threadedly connected to the right side of the ball valve 1, the output end of the grouting machine is threadedly connected to the left side of the ball valve 1, and then the second steel pipe 3 is inserted into the grouting steel pipe 7. With the cooperation of the opening groove 10, the first steel pipe 2 can be inserted into the grouting steel pipe 7 as a whole, and then the hoop 5 is clamped at the left end of the grouting steel pipe 7, and with the cooperation of the screw 4, the nut 8 and the mounting hole 9, the first steel pipe 2 and the grouting steel pipe 7 are firmly connected. With the cooperation of the arc rubber plate 6, the spring 16 and the reserved groove 12, the arc rubber plate 6 can fill the gap between the second steel pipe 3 and the grouting steel pipe 7. There is no situation where the grouting head cannot be removed due to slurry contamination, and the grouting head can be truly reused.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reusable quick grouting joint for tunnel grouting reinforcement, comprising a ball valve (1), characterized in that: The right end of the inner surface of the ball valve (1) is threadedly connected to a first steel pipe (2), and a second steel pipe (3) is welded to the right side of the first steel pipe (2), and a plurality of equally spaced reserved grooves (12) are provided at the left end of the outer surface of the second steel pipe (3), a spring (16) is fixedly connected to the inner cavity of the reserved groove (12), and an arc-shaped rubber plate (6) is fixedly connected to the outer side of the spring (16).

2. A reusable quick grouting joint for tunnel grouting reinforcement according to claim 1, characterized in that: The inner diameters of the first steel pipe (2) and the second steel pipe (3) are the same, and the outer diameter of the first steel pipe (2) is 1 cm longer than the outer diameter of the second steel pipe (3).

3. The reusable quick grouting joint for tunnel grouting reinforcement according to claim 1, characterized in that: The material of the arc-shaped rubber plates (6) is fluorocarbon rubber. The number of the arc-shaped rubber plates (6) is a plurality of groups arranged at equal intervals. The plurality of groups of arc-shaped rubber plates (6) are distributed in a ring shape, and the number of the arc-shaped rubber plates (6) in each group is a plurality of groups arranged at equal intervals.

4. The reusable quick grouting joint for tunnel grouting reinforcement according to claim 1, characterized in that: The number of springs (16) on the surface of each arc-shaped rubber plate (6) is two, and a first clamping groove (13) is provided on the outer surface of the second steel tube (3) and located in the middle position of the two reserved grooves (12). The inner cavity of the first clamping groove (13) is slidably connected to a first clamping rod (14), and the outer side of the first clamping rod (14) is fixedly connected to the inner side of the arc-shaped rubber plate (6).

5. A reusable quick grouting joint for tunnel grouting reinforcement according to claim 4, characterized in that: The inner cavity of the second steel pipe (3) is provided with a second clamping groove (11) on both sides of the first clamping groove (13); the inner cavity of the second clamping groove (11) is slidably connected to a second clamping rod (15), and the inner side of the second clamping rod (15) is fixedly connected to the lower end of the outer side of the first clamping rod (14).

6. The reusable quick grouting joint for tunnel grouting reinforcement according to claim 1, characterized in that: It also comprises a grouting steel pipe (7), the left end of the inner surface of the grouting steel pipe (7) is provided with an open groove (10), and the width of the open groove (10) is 5 mm.

7. The reusable quick grouting joint for tunnel grouting reinforcement according to claim 1, characterized in that: It also comprises a hoop (5), the lower end of the inner surface of the hoop (5) is provided with a mounting hole (9), the inner surface of the mounting hole (9) is plugged with a screw rod (4), and the end of the screw rod (4) is threadedly connected with a nut (8).

8. The reusable quick grouting joint for tunnel grouting reinforcement according to claim 1, characterized in that: The inner surfaces of the ball valve (1), the first steel pipe (2) and the second steel pipe (3) as well as the outer surface of the second steel pipe (3) are coated with an isolation coating (17), which is composed of talcum powder, graphite, boron nitride, sodium silicate, vegetable oil, fatty acid, stearate, hydrated silicon dioxide and metal terephthalate, and its components in parts by weight are: 35-45 parts of talcum powder; 20-30 parts of graphite; 10-25 parts of boron nitride; 6-15 parts of sodium silicate; 5-10 parts of vegetable oil; 10-20 parts of fatty acid; 3-8 parts of stearate; 8-20 parts of hydrated silicon dioxide; and 25-50 parts of metal terephthalate.

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