Semi-grouting sleeve for efficient steel bar connection

Abstract

The utility model provides a semi-grouting sleeve for efficiently connecting reinforcing steel bars, which relates to the technical field of reinforcing steel bar processing and comprises a reinforcing steel bar sleeve and a first reinforcing steel bar, a spiral groove mounting groove is arranged in one end of the reinforcing steel bar sleeve, arc-shaped positioning plates are circumferentially distributed in the other end of the reinforcing steel bar sleeve, and positioning springs are arranged on the back surfaces of the other ends of the arc-shaped positioning plates. The inner walls of the adjacent arc-shaped positioning plates are conical, a conical structure is formed through the arc-shaped positioning plates distributed in the circumferential direction and located at the end, close to the grouting pipe, of the steel bar sleeve, the diameter of the cone formed by the arc-shaped positioning plates is gradually reduced from the inlet end of the steel bar sleeve to the interior, and a smooth transition face is formed. Due to the conical design, the reinforcing steel bars can be guided to enter the reinforcing steel bar sleeve smoothly, deflection of the reinforcing steel bars is corrected automatically, the problem that the center of the second reinforcing steel bar deviates when the second reinforcing steel bar is connected is solved, and the connection reliability, construction convenience and cost effectiveness of the semi-grouting sleeve are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar processing, in particular to a semi-grouting sleeve for efficient steel bar connection. Background Technique

[0002] According to a steel bar connection grouting sleeve disclosed in Chinese Patent Publication No. CN114108955B, which includes: a sleeve body, a steel bar body, a grouting pipe and a slurry discharge pipe. The grouting pipe and the slurry discharge pipe are both fixedly connected to the surface of the sleeve body, and both the grouting pipe and the slurry discharge pipe are communicated with the sleeve body. The steel bar body is movably connected to the inner wall of the sleeve body. A first limiting plate is fixedly connected to the inner wall of the sleeve body. For this steel bar connection grouting sleeve, by setting a first threaded pipe, a fixing plate, an elastic clamping plate, a positioning pipe and a positioning ring, after the steel bar body is inserted into the sleeve, the rotating ring is rotated. The rotating ring drives the positioning pipe to rotate. The positioning pipe is threadedly connected to the inner wall of the first threaded pipe. The positioning pipe drives the positioning ring to press against the elastic clamping plate, and the elastic clamping plate is pressed against the surface of the steel bar body. The steel bar body is clamped by the elastic clamping plates on both sides of the steel bar body to fix the position of the steel bar body.

[0003] In the above-mentioned patent document and the prior art, when the steel bar is connected to the grouting sleeve, due to different sizes and models of the steel bars, the end diameters are different, and it is easy to have a state of central position deviation when socketing with the steel bar sleeve. Especially for the semi-grouting sleeve, the inserted steel bar and the threaded steel bar are prone to central deviation, which is not conducive to actual installation and use. Content of the Utility Model

[0004] The purpose of the utility model is to solve the defect that the central position is prone to deviation when the steel bar sleeve is socketed in the prior art, and to propose a semi-grouting sleeve for efficient steel bar connection.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a semi-grouting sleeve for efficient steel bar connection, including a steel bar sleeve and a first steel bar. A screw groove installation groove is arranged inside one end of the steel bar sleeve. Arc-shaped positioning plates are circumferentially distributed inside the other end of the steel bar sleeve, and one end of the arc-shaped positioning plate is coplanar with the end of the steel bar sleeve. A positioning spring is arranged on the back of the other end of the arc-shaped positioning plate, and the end of the positioning spring is welded to the inner wall of the steel bar sleeve. The inner wall shapes of adjacent arc-shaped positioning plates are conical.

[0006] Preferably, positioning ribs are vertically linearly arrayed on the inner wall surface of the steel bar sleeve, and the positioning ribs are located between the screw groove installation groove and the arc-shaped positioning plate.

[0007] Preferably, a slurry discharge pipe vertically penetrates through one end of the steel bar sleeve close to the screw groove installation groove, and a grouting pipe vertically penetrates through the other end of the steel bar sleeve.

[0008] Preferably, a first steel bar is connected to one end of the steel bar sleeve close to the threaded mounting groove, and a second steel bar is connected to the other end of the steel bar sleeve, and the end of the second steel bar abuts against the inner wall of the arc-shaped positioning plate.

[0009] Preferably, the inner wall of the arc-shaped positioning plate is provided with reinforcing ribs, and the reinforcing ribs are distributed in a linear array along the inner wall of the arc-shaped positioning plate, and the two ends of the reinforcing ribs are coplanar with the two sides of the arc-shaped positioning plate.

[0010] Preferably, the outer surface of the steel sleeve is provided with a spiral groove, and the outer edge and inner wall of the steel sleeve are deburred.

[0011] Preferably, the angle between the outer wall of the arc-shaped positioning plate and the steel sleeve is 10-20°, and the vertical center line of the circumferential range where the adjacent arc-shaped positioning plates are located coincides with the vertical center line of the steel sleeve.

[0012] Beneficial Effects

[0013] In the utility model, one end of the steel bar sleeve is connected to the first steel bar through a threaded mounting groove, and the other end is connected to the second steel bar through an arc-shaped positioning plate. A conical structure is formed by the circumferentially distributed arc-shaped positioning plates, which are located at one end of the steel bar sleeve close to the grouting pipe, so that the conical diameter formed by the arc-shaped positioning plate gradually decreases from the entrance end of the steel bar sleeve to the inside, forming a smooth transition surface. This conical design helps to guide the steel bar to enter the inside of the steel bar sleeve smoothly, and automatically corrects the deflection of the steel bar, preventing the second steel bar from having a center offset problem when it is connected, thereby improving the connection reliability, construction convenience and cost-effectiveness of the semi-grouting sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a diagram of the internal connection structure of the steel sleeve of the utility model;

[0015] Figure 2 This is the internal structure diagram of the steel sleeve of the utility model;

[0016] Figure 3 This is a front structural diagram of the inner part of the steel sleeve of the utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the external connection of the steel sleeve of the utility model.

[0018] Legend:

[0019] 1. Steel bar sleeve; 2. First steel bar; 3. Second steel bar; 4. Threaded installation groove; 5. Grouting pipe; 6. Grouting pipe; 7. Arc-shaped positioning plate; 8. Positioning spring; 9. Reinforcement rib; 10. Positioning rib. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the following further elaborates the present utility model in conjunction with specific embodiments and the accompanying drawings. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present utility model.

[0021] The following describes the specific embodiments of the present utility model with reference to the accompanying drawings. Specific Embodiment 1:

[0023] Refer to Figures 1-4 , a semi-grouting sleeve for high-efficiency steel bar connection, including a steel bar sleeve 1 and a first steel bar 2. One end of the steel bar sleeve 1 near the thread installation groove 4 is vertically penetrated and provided with a slurry outlet pipe 6, and the other end of the side of the steel bar sleeve 1 is vertically penetrated and provided with a grouting pipe 5. The grouting pipe 5 is used to inject grouting material into the steel bar sleeve 1, and the slurry outlet pipe 6 is used to discharge the excess grouting material or air, ensuring the smooth progress of the grouting process and achieving the expected filling effect, simplifying the grouting operation process, improving the grouting efficiency and quality, thereby enhancing the connection tightness and durability. A thread groove installation groove is provided inside one end of the steel bar sleeve 1. Arc-shaped positioning plates 7 are circumferentially distributed inside the other end of the steel bar sleeve 1, and one end of the arc-shaped positioning plate 7 is coplanar with the end of the steel bar sleeve 1. A positioning spring 8 is provided on the back of the other end of the arc-shaped positioning plate 7, and the end of the positioning spring 8 is welded to the inner wall of the steel bar sleeve 1. The inner wall shapes of adjacent arc-shaped positioning plates 7 are conical. One end of the steel bar sleeve 1 near the thread installation groove 4 is connected with a first steel bar 2, and the other end of the steel bar sleeve 1 is connected with a second steel bar 3, and the end of the second steel bar 3 abuts against the inner wall of the arc-shaped positioning plate 7. The thread groove installation groove is used to connect the first steel bar 2 through threads to ensure the stability of the connection. The combination of the arc-shaped positioning plate 7 and the positioning spring 8 provides an elastic positioning and guiding function for the second steel bar 3. The conical inner wall design helps to guide the second steel bar 3 to enter smoothly and automatically correct its position, improving the reliability and stability of the steel bar connection, reducing the connection problems caused by the deflection of the steel bar, and at the same time enhancing the construction convenience.

[0024] The inner wall surface of the steel bar sleeve 1 is vertically and linearly arrayed with positioning ribs 10, and the positioning ribs 10 are located between the threaded installation groove 4 and the arc-shaped positioning plate 7. The positioning ribs 10, as additional support structures, enhance the overall strength of the steel bar sleeve 1. This design helps increase the friction between the steel bar sleeve 1 and the grouting material, improves the stability of the connection, and to a certain extent helps fix the position of the steel bar, preventing it from shaking within the steel bar sleeve 1, improving the load-bearing capacity and service life of the steel bar sleeve 1, and further ensuring the stability of the connection. The inner wall of the arc-shaped positioning plate 7 is provided with reinforcing ribs 9, and the reinforcing ribs 9 are linearly arrayed along the inner wall of the arc-shaped positioning plate 7, and both ends of the reinforcing ribs 9 are coplanar with both sides of the arc-shaped positioning plate 7. The reinforcing ribs 9 enhance the rigidity and load-bearing capacity of the arc-shaped positioning plate 7, prevent it from deforming or being damaged when stressed, improve the stability and durability of the arc-shaped positioning plate 7, and further ensure the reliability of the steel bar connection. The outer surface of the steel bar sleeve 1 is provided with spiral grooves, and the outer edge and inner wall of the steel bar sleeve 1 are both deburred. The included angle between the outer wall of the arc-shaped positioning plate 7 and the steel bar sleeve 1 is 10 - 20°, and the vertical midline of the circumferential range where adjacent arc-shaped positioning plates 7 are located coincides with the vertical midline of the steel bar sleeve 1. The reasonable included angle design enables the arc-shaped positioning plate 7 to better guide and fix the second steel bar 3 while maintaining the balance and stability of the overall structure. Specific Embodiment Two:

[0026] Refer to Figures 1-4 , based on the content in the above specific embodiment, the following content is further disclosed:

[0027] When the entire device is in use, it specifically includes the following content:

[0028] Steel bar connection

[0029] Threaded connection: Align the threaded end of the first steel bar 2 with the screw groove installation groove of the steel bar sleeve 1, and tighten it with a torque wrench according to the specified torque to ensure a firm and reliable connection;

[0030] Arc-shaped positioning plate 7 connection: Insert the second steel bar 3 into the other end of the steel bar sleeve 1, and fix it using the elastic action of the arc-shaped positioning plate 7 and the positioning spring 8. During the insertion process, pay attention to observing whether the second steel bar 3 smoothly enters the steel bar sleeve 1 and automatically corrects the deviation.

[0031] Mix the grouting material: Mix the grouting material and water in proportion according to the requirements of the instruction manual, and use a stirrer to stir evenly until the grouting material shows good fluidity and workability;

[0032] Grouting: Inject the mixed grouting material into the steel bar sleeve 1 through the grouting pipe 5, and at the same time pay attention to observing whether there is slurry flowing out of the slurry outlet pipe 6. After the slurry outlet pipe 6 stably flows out the slurry, maintain a certain grouting pressure until all the slurry outlet holes have slurry flowing out and are firmly blocked;

[0033] Seal the grout outlet: After grouting is completed, promptly seal the grout outlet and the grouting pipe 5 to prevent the grouting material from flowing out or air from entering the steel bar sleeve 1. Specific Embodiment Three:

[0035] Refer to Figures 1-4 , based on the content in the above specific embodiments, the following content is further disclosed:

[0036] The connection structure between the arc-shaped positioning plate 7 and the steel bar sleeve 1 mainly relies on the support of the positioning spring 8 and the inner wall of the steel bar sleeve 1. Specifically, one end of the arc-shaped positioning plate 7 is fixedly coplanar with the end of the steel bar sleeve 1, and the other end is connected to the inner wall of the steel bar sleeve 1 through the positioning spring 8. This design enables the arc-shaped positioning plate 7 to have a certain elasticity, capable of automatically adjusting its position when the steel bar is inserted, ensuring that the steel bar can smoothly enter and be accurately positioned.

[0037] During the connection process, the end of the second steel bar 3 will abut against the inner wall of the arc-shaped positioning plate 7. Since the shape of the inner wall of the arc-shaped positioning plate 7 is conical and there is a certain included angle between adjacent arc-shaped positioning plates 7, this design helps to guide the steel bar smoothly into the interior of the steel bar sleeve 1 and automatically correct the deflection of the steel bar. At the same time, the setting of the positioning rib 10 also enhances the support of the inner wall of the steel bar sleeve 1, further improving the stability and reliability of the connection.

[0038] The arc-shaped positioning plate 7 needs to have good strength, wear resistance, corrosion resistance, and a certain elasticity. Therefore, in practical applications, the arc-shaped positioning plate 7 is usually made of high-quality steel, such as alloy steel or stainless steel, etc. These materials not only have sufficient strength to withstand the tensile and compressive forces of the steel bar but also have good wear resistance and corrosion resistance, capable of being used for a long time in harsh environments without failure.

[0039] In summary, the connection structure between the arc-shaped positioning plate 7 and the steel bar sleeve 1 mainly relies on the support of the positioning spring 8 and the inner wall of the steel bar sleeve 1, and the arc-shaped positioning plate 7 is usually made of high-quality steel to ensure its strength and durability.

[0040] In summary:

[0041] One end of the steel bar sleeve 1 is connected to the first steel bar 2 through the threaded installation groove 4, and the other end is connected to the second steel bar 3 through the arc-shaped positioning plate 7. A conical structure is formed by the circumferentially distributed arc-shaped positioning plates 7 at one end of the steel bar sleeve 1 near the grouting pipe 5, so that the diameter of the cone formed by the arc-shaped positioning plates 7 gradually decreases from the inlet end of the steel bar sleeve 1 towards the interior, forming a smooth transition surface. This conical design helps to guide the steel bar smoothly into the interior of the steel bar sleeve 1 and automatically correct the deflection of the steel bar, preventing the problem of central offset when the second steel bar 3 is connected, and improving the connection reliability, construction convenience, and cost-effectiveness of the semi-grouting sleeve.

[0042] In the present utility model, unless otherwise clearly stipulated and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under the bottom of" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0043] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will also have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A semi-grouting sleeve for efficient steel bar connection, comprising a steel bar sleeve (1) and a first steel bar (2), characterized in that: One end of the steel bar sleeve (1) is internally provided with a screw groove installation groove. The other end of the steel bar sleeve (1) is internally circumferentially provided with arc-shaped positioning plates (7), and one end of the arc-shaped positioning plate (7) is coplanar with the end of the steel bar sleeve (1). The back of the other end of the arc-shaped positioning plate (7) is provided with a positioning spring (8), and the end of the positioning spring (8) is welded to the inner wall of the steel bar sleeve (1). The inner wall shapes of adjacent arc-shaped positioning plates (7) are conical.

2. The semi-grouting sleeve for high-efficiency steel bar connection according to claim 1, wherein: The inner wall surface of the steel bar sleeve (1) is vertically linearly arrayed with positioning ribs (10), and the positioning ribs (10) are located between the thread installation groove (4) and the arc-shaped positioning plate (7).

3. An efficient semi-grouting sleeve for steel bar connection according to claim 1, characterized in that: One end of the steel bar sleeve (1) near the thread installation groove (4) is vertically penetrated by a slurry outlet pipe (6), and the other end of the steel bar sleeve (1) is vertically penetrated by a grouting pipe (5).

4. An efficient semi-grouting sleeve for steel bar connection according to claim 1, characterized in that: One end of the steel bar sleeve (1) near the thread installation groove (4) is connected with a first steel bar (2), and the other end of the steel bar sleeve (1) is connected with a second steel bar (3), and the end of the second steel bar (3) abuts against the inner wall of the arc-shaped positioning plate (7).

5. The semi-grouting sleeve for high-efficiency steel bar connection according to claim 1, wherein: The inner wall of the arc-shaped positioning plate (7) is provided with reinforcing ribs (9), and the reinforcing ribs (9) are linearly arrayed along the inner wall of the arc-shaped positioning plate (7), and both ends of the reinforcing ribs (9) are coplanar with both sides of the arc-shaped positioning plate (7).

6. The semi-grouting sleeve for high-efficiency steel bar connection according to claim 1, characterized in that: The outer surface of the steel bar sleeve (1) is provided with spiral grooves, and the outer edge and inner wall of the steel bar sleeve (1) are both deburred.

7. An efficient semi-grouting sleeve for steel bar connection according to claim 1, characterized in that: The included angle between the outer wall of the arc-shaped positioning plate (7) and the steel bar sleeve (1) is 10-20°, and the vertical midline of the circumferential range where adjacent arc-shaped positioning plates (7) are located coincides with the vertical midline of the steel bar sleeve (1).

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