Grouting sleeve

Abstract

The utility model relates to the technical field of civil engineering structures, and discloses a grouting sleeve which comprises a sleeve body, the two ends of the inner wall of the sleeve body are each provided with a set of first shear force grooves, and two reinforcing steel bars which are symmetrically arranged are arranged in the sleeve body. According to the grouting sleeve, the sealing assembly is designed and comprises the sealing barrel, the bag storage cavity, the air bag, the push disc, the push rod and other structures, grout can be effectively prevented from flowing out of the two ends of the sleeve in the grouting process, and particularly, due to the design of the air bag, when the sealing barrel is rotated, the grout can be prevented from flowing out through the extrusion effect of the push rod and the push disc; the first shearing force groove and the second shearing force groove which are different in length are formed in the inner wall of the sleeve, a more reasonable fluid channel can be formed in the sleeve, grouting materials can smoothly flow in the sleeve, and the sealing performance of the two ends of the sleeve is greatly improved. The design not only reduces the gap between the grouting material and the sleeve, but also improves the filling efficiency and uniformity of the grouting material.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of civil engineering structures, in particular to a grouting sleeve. BACKGROUND

[0002] The grouting sleeve is widely used in civil engineering such as buildings, bridges and tunnels as an efficient and reliable steel bar connecting mode. The grouting sleeve is mainly assembled by a specially processed sleeve, matching grouting material and steel bars, and the tight connection between the steel bars and the sleeve is realized by injecting fast-hardening and non-shrinkage grouting material and relying on the bonding and biting effect between the materials. This connecting mode has many advantages such as reliable performance, wide applicability and simple installation.

[0003] However, in the actual application process, the connecting effect of the grouting sleeve is often affected by many factors, and a key problem is that there are gaps between the grouting material and the grouting sleeve when the grouting material is injected into the grouting sleeve. These gaps may be caused by roughness of the inner wall of the sleeve, flowability of the grouting material, injection mode and many other factors. The existence of the gaps not only reduces the tightness between the grouting material and the grouting sleeve, but also weakens the bonding force between the steel bars and the sleeve, and may also cause the steel bars to slip when stressed, thereby affecting the stability and safety of the entire structure. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies of the prior art, the application provides a grouting sleeve which has the advantages of tightness and solves the problems proposed in the background art.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a grouting sleeve, comprising a sleeve, a group of first shear grooves are arranged at both ends of the inner wall of the sleeve, two symmetrical steel bars are arranged in the interior of the sleeve, and a group of second shear grooves are arranged on the inner wall of the sleeve.

[0006] The inner wall of both ends of the sleeve is provided with internal threads, and a sealing assembly is threadedly connected to both ends of the sleeve.

[0007] Both the sealing assemblies comprise a closed cylinder, a storage cavity, an air bag, a push disc and a plurality of push rods.

[0008] The middle end of the sleeve is fixedly connected with a blocking disc, and the interior of the middle end of the sleeve is provided with a positioning assembly.

[0009] Both the positioning assemblies comprise a positioning ring and a plurality of guide ribs.

[0010] Through the above scheme, through the design of the sealing assembly, including the closed barrel, the storage cavity, the air bag, the push disc and the push rod and other structures, the slurry can be effectively prevented from flowing out from both ends of the sleeve during grouting, especially the design of the air bag, which can be inflated and closely contacted with the surface of the steel bar through the extrusion of the push rod and the push disc when the closed barrel is rotated, thereby greatly improving the sealing performance of both ends of the sleeve, and the first shear groove and the second shear groove with different lengths are arranged on the inner wall of the sleeve, which can form a more reasonable fluid channel in the sleeve, facilitating the smooth flow of the grouting material in the sleeve, which not only reduces the gap between the grouting material and the sleeve, but also improves the filling efficiency and uniformity of the grouting material, thereby further enhancing the connection strength between the steel bar and the sleeve, and the positioning assembly is arranged, including the positioning ring and the guide rib, which can realize accurate guidance and stable positioning of the steel bar, which ensures that the steel bar and the sleeve are on the same axis, avoiding the connection failure caused by the position deviation of the steel bar during grouting, thereby improving the connection stability and reliability of the entire grouting sleeve.

[0011] Further, the outer surface of the sleeve is respectively fixedly connected with a grouting pipe and a slurry outlet pipe.

[0012] Through the above scheme, the grouting pipe is a feeding port for filling grouting material, and the slurry outlet pipe is a discharge port for venting and overflowing the excess grouting material after filling.

[0013] Further, the outer surface of each steel bar is provided with a group of equally spaced ribs.

[0014] Through the above scheme, the above arrangement can increase the friction coefficient with the slurry and improve the pullout resistance.

[0015] Further, two closed barrels are respectively threadedly connected with both ends of the sleeve, each air bag is located inside the storage cavity, each push disc is slidably connected with the storage cavity adjacent thereto, one end of each push rod is fixedly connected with the push disc adjacent thereto, and the surface of each push rod is slidably inserted into the closed barrel adjacent thereto.

[0016] Through the above scheme, when the closed barrel is rotated, the push rod is extruded to drive the push disc to move, the push disc extrudes the air bag, the other end of the air bag is inflated and closely contacted with the surface of the steel bar, thereby preventing the slurry inside the sleeve from flowing out from both ends.

[0017] Further, two positioning rings are fixedly connected with the inner wall of the sleeve, and two positioning rings are respectively located on the left and right sides of the blocking disc, each group of guide ribs is fixedly connected with the positioning ring adjacent thereto, and two groups of guide ribs are symmetrically arranged.

[0018] Through the above scheme, the guide purpose of the steel bar can be achieved, and the steel bar and the sleeve are ensured to be on the same axis.

[0019] Further, the sleeve is made of high-strength alloy steel.

[0020] Through the above scheme, the strength and durability of the sleeve can be improved, and the reliability and safety of the grouting sleeve in various complex environments can be ensured.

[0021] Further, the length of each first shear groove is greater than that of the second shear groove.

[0022] Through the above scheme, different shaped shear grooves can be formed in the sleeve, which facilitates the flow of grouting material in the sleeve and reduces the gap between the grouting material and the sleeve.

[0023] Further, the outer surfaces of the grouting pipe and the outlet pipe are provided with pointing arrows.

[0024] Through the above scheme, the user can easily distinguish the inlet and outlet.

[0025] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0026] The grouting sleeve comprises a sealing assembly, a closed cylinder, a storage cavity, an air bag, a push disc, a push rod and the like. The sealing assembly can effectively prevent the slurry from flowing out of the two ends of the sleeve during grouting. In particular, the air bag is designed to be inflated and tightly contacted with the surface of the steel bar through the extrusion of the push rod and the push disc when the closed cylinder is rotated, thereby greatly improving the sealing performance of the two ends of the sleeve. The first shear groove and the second shear groove with different lengths are arranged on the inner wall of the sleeve to form a more reasonable fluid channel in the sleeve, which facilitates the smooth flow of the grouting material in the sleeve. This design not only reduces the gap between the grouting material and the sleeve, but also improves the filling efficiency and uniformity of the grouting material, thereby further enhancing the connection strength between the steel bar and the sleeve. The positioning assembly is arranged, which comprises a positioning ring and a guide rib and the like. The positioning assembly can accurately guide and stably position the steel bar. This design ensures that the steel bar and the sleeve are on the same axis, avoids the connection failure caused by the position deviation of the steel bar during grouting, and improves the connection stability and reliability of the entire grouting sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a front view of the overall structure of the present application;

[0028] Figure 2 It is a perspective view of the overall structure of the present application;

[0029] Figure 3 It is a sectional view of the sealing assembly of the present application;

[0030] Figure 4 It is a structure diagram of the blocking disc and the positioning assembly of the present application.

[0031] In the drawings:

[0032] 1, sleeve; 2, first shear groove; 3, steel bar; 4, second shear groove; 5, sealing assembly; 501, closed cylinder; 502, storage cavity; 503, air bag; 504, push disc; 505, push rod; 6, blocking disc; 7, positioning assembly; 701, positioning ring; 702, guide rib; 8, grouting pipe; 9, grout outlet pipe; 10, rib; 11, pointing arrow. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] Please refer to Figure 1 , Figure 2 and Figure 3 , a grouting sleeve in the embodiment comprises a sleeve 1, a group of first shear grooves 2 are arranged at both ends of the inner wall of the sleeve 1, two symmetrically arranged steel bars 3 are arranged in the sleeve 1, a group of second shear grooves 4 are arranged on the inner wall of the sleeve 1, and a group of equidistantly arranged ribs 10 are arranged on the outer surface of each steel bar 3. Through the above arrangement, the friction coefficient with the grout can be increased, and the uplift resistance can be improved.

[0035] Please refer to Figure 1 , Figure 2 and Figure 3 , the length of each first shear groove 2 is greater than that of the second shear groove 4. Through the above arrangement, different-shaped shear grooves can be formed in the sleeve 1, the grouting material can flow in the sleeve 1, the gap between the grouting material and the sleeve 1 is reduced, the inner wall of both ends of the sleeve 1 is internally threaded, the sealing assembly 5 is threadedly connected to both ends of the sleeve 1, the grouting pipe 8 and the grout outlet pipe 9 are respectively fixedly connected to the outer surface of the sleeve 1, the grouting pipe 8 is a feeding port for adding grouting material, and the grout outlet pipe 9 is a discharge port for venting when adding grouting material and overflowing the excess grouting material after filling.

[0036] Please refer to Figure 2 , Figure 3 and Figure 4Two sealing assemblies 5 each include a sealing cylinder 501, a storage cavity 502, an air bag 503, a push disc 504 and a plurality of push rods 505. Through the above arrangement, the sealing performance of the sleeve 1 at both ends can be improved, and the pulp liquid can be prevented from flowing out. The two sealing cylinders 501 are respectively threadedly connected with the two ends of the sleeve 1. Each air bag 503 is located inside the storage cavity 502. Each push disc 504 is slidingly connected with the storage cavity 502 close to the push disc 504. One end of each push rod 505 is fixedly connected with the push disc 504 close to the push disc 504. The surface of each push rod 505 is slidingly inserted into the sealing cylinder 501 close to the push rod 505. Through the above arrangement, when the sealing cylinder 501 is rotated, the push rod 505 is extruded to drive the push disc 504 to move, so that the push disc 504 extrudes the air bag 503. The other end of the air bag 503 is inflated and tightly contacts the surface of the steel bar 3, thereby preventing the pulp liquid in the sleeve 1 from flowing out from both ends.

[0037] Please refer to Figure 1 、 Figure 2 and Figure 4 The middle end of the sleeve 1 is fixedly connected with a blocking disc 6. Through the arrangement of the blocking disc 6, the blocking purpose of the steel bar 3 can be achieved. The inside of the middle end of the sleeve 1 is provided with a positioning assembly 7. The material of the sleeve 1 is high-strength alloy steel. Through the above arrangement, the strength and durability of the sleeve 1 can be improved, and the reliability and safety of the grouting sleeve 1 in various complex environments can be ensured. The outer surfaces of the grouting pipe 8 and the pulp outlet pipe 9 are each provided with an arrow 11. Through the above arrangement, the user can easily distinguish the inlet and outlet.

[0038] Please refer to Figure 1 、 Figure 2 and Figure 4 Two positioning assemblies 7 each include a positioning ring 701 and a plurality of guide ribs 702. The two positioning rings 701 are fixedly connected with the inner wall of the sleeve 1. The two positioning rings 701 are respectively located on the left and right sides of the blocking disc 6. Each set of guide ribs 702 is fixedly connected with the positioning ring 701 close to the guide ribs 702. The two sets of guide ribs 702 are symmetrically arranged. Through the above arrangement, the guide purpose of the steel bar 3 can be achieved, and the steel bar 3 and the sleeve 1 are ensured to be on the same axis.

[0039] The grouting sleeve 1 in this embodiment can effectively prevent the grout from flowing out of the two ends of the sleeve 1 during the grouting process through the designed sealing assembly 5, including the closed barrel 501, the storage cavity 502, the air bag 503, the push disc 504 and the push rod 505 and other structures. In particular, the design of the air bag 503 can make the air bag 503 expand and tightly contact the surface of the steel bar 3 through the extrusion of the push rod 505 and the push disc 504 when the closed barrel 501 is rotated, thereby greatly improving the sealing performance of the two ends of the sleeve 1. By arranging the first shear groove 2 and the second shear groove 4 with different lengths on the inner wall of the sleeve 1, a more reasonable fluid channel can be formed in the sleeve 1, which facilitates the smooth flow of the grouting material in the sleeve 1. This design not only reduces the gap between the grouting material and the sleeve 1, but also improves the filling efficiency and uniformity of the grouting material, thereby further enhancing the connection strength between the steel bar 3 and the sleeve 1. By arranging the positioning assembly 7, including the positioning ring 701 and the guide rib 702 and other structures, the precise guidance and stable positioning of the steel bar 3 can be achieved. This design ensures that the steel bar 3 and the sleeve 1 are on the same axis, avoiding the connection failure caused by the position deviation of the steel bar 3 during the grouting process, thereby improving the connection stability and reliability of the entire grouting sleeve 1.

[0040] The working principle of the above embodiment is as follows: first, two symmetrically arranged steel bars 3 are inserted into the left and right ends of the sleeve 1. During the insertion process, the positioning assembly 7 is arranged to make the steel bars 3 and the sleeve 1 concentric. One end of the steel bar 3 contacts the blocking disc 6, which can block the steel bar 3, thereby ensuring the symmetry of the two steel bars 3. Then, the sealing assembly 5 is installed. Two closed barrels 501 are respectively threadedly connected to the two ends of the sleeve 1. During the rotation of the closed barrel 501, the push rod 505 contacts and is extruded by the inner bottom wall of the sealing barrel, which drives the push disc 504 to extrude the air bag 503. After being extruded, the air bag 503 gradually expands and tightly adheres to the surface of the steel bar 3, effectively preventing the grouting material from flowing out of the two ends of the sleeve 1 and improving the overall air tightness. Then, the grouting process begins. The fast-hardening and non-shrinking grouting material is injected into the sleeve 1 through the grouting pipe 8. During the injection process, the grouting material flows along the first shear groove 2 and the second shear groove 4 on the inner wall of the sleeve 1. The design of these shear grooves not only reduces the gap between the grouting material and the sleeve 1, but also improves the filling efficiency and uniformity of the grouting material. Finally, when the grouting material completely fills the inside of the sleeve 1 and reaches the predetermined position, the excess grouting material will overflow through the grouting pipe 9. At this time, the grouting can be stopped and the grouting material can be hardened. The hardened grouting material firmly bonds the steel bar 3 and the sleeve 1 together, forming a whole structure, thereby ensuring the connection stability and reliability of the grouting sleeve 1.

[0041] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the enclosed claims. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the application can be varied in a multitude of ways. Such alterations, many of which will be apparent to those skilled in the art, can be based on current technology, and as such, this application should not be limited to the particular embodiments described herein, but should be understood to include all embodiments that are within the scope of the appended claims and their equivalents.

[0042] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grouting sleeve (1), comprising a sleeve (1), characterized in that: A group of first shear grooves (2) are respectively provided at both ends of the inner wall of the sleeve (1), two symmetrically arranged steel bars (3) are provided inside the sleeve (1), and a group of second shear grooves (4) are provided on the inner wall of the sleeve (1); The inner walls of both ends of the sleeve (1) are provided with internal threads, and both ends of the sleeve (1) are threadedly connected to sealing components (5); The two sealing assemblies (5) each include a sealing cylinder (501), a storage chamber (502), an air bag (503), a push plate (504) and a plurality of push rods (505); The middle end of the sleeve (1) is fixedly connected to a blocking disk (6), and the inner middle end of the sleeve (1) is provided with a positioning assembly (7); The two positioning assemblies (7) each comprise a positioning ring (701) and a plurality of guide ribs (702).

2. A grouting sleeve (1) according to claim 1, characterized in that: The outer surface of the sleeve (1) is fixedly connected to a grouting pipe (8) and a grouting pipe (9).

3. A grouting sleeve (1) according to claim 1, characterized in that: The outer surface of each steel bar (3) is provided with a group of ribs (10) arranged at equal distances.

4. A grouting sleeve (1) according to claim 1, characterized in that: The two closing cylinders (501) are respectively threadedly connected to the two ends of the sleeve (1), each of the airbags (503) is located inside the storage cavity (502), each of the push plates (504) is slidably connected to the storage cavity (502) adjacent to it, one end of each of the push rods (505) is fixedly connected to the push plate (504) adjacent to it, and the surface of each of the push rods (505) is slidably plugged into the closing cylinder (501) adjacent to it.

5. The grouting sleeve (1) according to claim 1, characterized in that: The two positioning rings (701) are fixedly connected to the inner wall of the sleeve (1), and the two positioning rings (701) are respectively located on the left and right sides of the blocking disk (6). Each group of guide ribs (702) is fixedly connected to the positioning ring (701) adjacent to it, and the two groups of guide ribs (702) are symmetrically arranged.

6. A grouting sleeve (1) according to claim 1, characterized in that: The sleeve (1) is made of high-strength alloy steel.

7. The grouting sleeve (1) according to claim 1, characterized in that: The length of each of the first shear grooves (2) is greater than that of the second shear grooves (4).

8. The grouting sleeve (1) according to claim 2, characterized in that: The outer surfaces of the grouting pipe (8) and the grouting pipe (9) are both provided with directional arrows (11).

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