A reinforcing bar correction connecting device and a reinforcing bar sleeve assembly

Abstract

This utility model relates to a rebar alignment and connection device and a rebar sleeve assembly, belonging to the field of building construction. The technical solution is as follows: a rebar alignment and connection device includes a sleeve assembly and an alignment assembly. The sleeve assembly includes an upper rebar sleeve and a lower rebar sleeve. The alignment assembly includes a guide sleeve and an upper jaw, with a push-pull mechanism between the guide sleeve and the upper jaw. The inner hole of the guide sleeve has a first guide section and a second guide section. The upper jaw presses against the upper end of the upper rebar sleeve and can press the upper rebar sleeve into the second guide section. A transition chamfer is provided on the outer periphery of the lower end face of the upper rebar sleeve. This solution designs a structure for completing the alignment and connection of rebars. Through the transition chamfer, the upper rebar sleeve enters the guide sleeve. The guiding action of the guide sleeve completes the centering and connection of the upper and lower rebar sleeves, enabling precise collinear connection of the rebars and improving axial mechanical properties.

Description

Technical Field

[0001] This utility model relates to the field of building construction, and in particular to a rebar alignment and connection device, and a rebar sleeve assembly. Background Technology

[0002] Rebar butt welding is a common technical operation in construction engineering. Its main purpose is to connect the ends of two rebars to ensure the continuity and integrity of the rebar in the structure, thereby enhancing the stability and load-bearing capacity of the structure. Common methods for rebar butt welding include welding, mechanical connection, and adhesive bonding.

[0003] For mechanical connections, the most common methods are direct threaded connections and connecting sleeve connections. Direct threaded connections require machining internal and external threads at the ends of the reinforcing bars. This method places high demands on the processing of the reinforcing bars, increasing manufacturing costs. It also requires the reinforcing bars to be able to rotate freely, making it unsuitable when many reinforcing bars have already been poured and embedded. Furthermore, it is inconvenient to operate on the construction site. Connecting sleeve connections offer relatively lower costs and ease of operation. However, sleeve connections require the reinforcing bars to be positioned at the same height and collinear. When both reinforcing bars are fixed, there is usually a certain degree of straightness error between them, requiring manual correction by construction workers before installing the sleeve, making the operation more complex.

[0004] Existing patent CN118407565A discloses a mechanical connection device for reinforcing bars. It connects two reinforcing bars by creating a cavity between two joints and a clamping head structure that can move freely within the cavity, allowing relative movement between the two parts of the sleeve while maintaining the pre-connection of the clamping head. However, in this patent's solution, due to the mobility of the clamping head within the cavity, although the two reinforcing bars are connected after the connection is completed, the position of the clamping head within the cavity cannot be uniquely determined. That is, the connected reinforcing bars may not be collinear, affecting the axial mechanical properties of the connected reinforcing bars. Summary of the Invention

[0005] This invention addresses the problem of precise alignment and positioning during rebar splicing by providing a rebar alignment and connection device.

[0006] To solve the above problems, the technical solution adopted by this utility model is a rebar straightening and connection device, including a sleeve assembly and a straightening assembly: the sleeve assembly includes an upper rebar sleeve and a lower rebar sleeve, which are connected and fixed to each other; the straightening assembly includes a guide sleeve and an upper jaw, and a push-pull mechanism is provided between the guide sleeve and the upper jaw, which can cause the guide sleeve and the upper jaw to move relative to each other in the axial direction of the rebar; the inner hole of the guide sleeve has a first guide section adapted to the outer diameter of the upper rebar sleeve and a second guide section adapted to the outer diameter of the lower rebar sleeve, and the upper jaw presses against the upper end of the upper rebar sleeve and can press the upper rebar sleeve into the second guide section; the lower end face of the upper rebar sleeve is provided with a transition chamfer on its outer periphery, and / or the upper end of the inner hole of the guide sleeve is provided with a transition chamfer. This design provides a structure for aligning and connecting reinforcing bars. The upper jaw pulls the upper reinforcing bar sleeve, causing the guide sleeve to move upward. Through a transition chamfer, the upper reinforcing bar sleeve enters the guide sleeve. The guide sleeve guides the upper and lower reinforcing bar sleeves to achieve centering and connection. This design is easy to operate, enables precise collinear connection of reinforcing bars, and improves axial mechanical properties.

[0007] As a preferred embodiment of a rebar alignment and connection device, the outer diameter of the upper rebar sleeve and the outer diameter of the lower rebar sleeve are the same, and the inner diameter of the first guide section and the inner diameter of the second guide section are the same. The guide section, the upper rebar sleeve, and the lower rebar sleeve have uniform diameters, making them easy to manufacture, requiring no axial position, and allowing for flexible adaptation to different spacings between two rebars.

[0008] As a preferred embodiment of a rebar straightening and connection device, the push-pull mechanism includes a screw rotatably disposed outside the guide sleeve, and a threaded hole provided on the upper jaw, with the upper thread of the screw threaded into the threaded hole. The push-pull mechanism employs a screw thread structure, resulting in high pulling force, ease of operation, and high structural strength.

[0009] As a preferred embodiment of a rebar alignment and connection device, the lower part of the upper rebar sleeve is provided with an upper connecting threaded section, and the upper part of the lower rebar sleeve is provided with a lower connecting threaded section. A connecting sleeve is threadedly installed on either the upper or lower connecting threaded section. The inner surface of the connecting sleeve is configured with an internal thread that mates with the upper and lower connecting threaded sections, and the outer surface of the connecting sleeve is configured with an external toothed surface. The guide sleeve is also provided with a spur gear that mates with the external toothed surface. A back nut is also provided on either the upper or lower connecting threaded section. The alignment assembly, in addition to completing rebar alignment, can also connect the upper and lower rebar sleeves without removal, avoiding the rebar springback problem that may occur after removing and reconnecting the rebar sleeves, further improving the convenience and collinearity of rebar connections.

[0010] As a preferred embodiment of the rebar straightening and connecting device, a central shaft is provided on the guide sleeve, the spur gear is mounted on the central shaft, and a coupling structure is provided between the upper end of the central shaft and the lower end of the screw. By connecting the screw and the central shaft, both can be driven to rotate through the same power input, simplifying the device structure and reducing manufacturing and usage costs.

[0011] As a preferred embodiment of a rebar alignment and connection device, the coupling structure includes a pin. One end of the central shaft and the screw has a insertion hole, and the other end is inserted into this insertion hole. Both the wall of the insertion hole and the other end have pin holes. The pin is detachably inserted into the pin holes. This pin connection for torque transmission is simple, reliable, and easy to manufacture.

[0012] As a preferred embodiment of the rebar alignment and connection device, a first bevel gear is also provided on the central shaft, and a second bevel gear is also provided on the guide sleeve. The first and second bevel gears mesh with each other, and the rotation axis of the second bevel gear is perpendicular to the length direction of the rebar. Using the bevel gears as power input, construction personnel can operate the device from one side, offering high comfort and convenience.

[0013] As a preferred embodiment of the rebar straightening and connection device, a toothed mold protection box is installed on the outer wall of the guide sleeve, the central shaft is located in the toothed mold protection box, and an operating hole is provided at the center of the rear end face of the second bevel gear, which is exposed to the outside of the toothed mold protection box. The toothed mold protection box can serve as the mounting base for the gear structure and protect the gear structure.

[0014] On the other hand, this utility model also provides a rebar sleeve assembly, including an upper rebar sleeve and a lower rebar sleeve. The lower part of the upper rebar sleeve is provided with an upper connecting threaded section, and the upper part of the lower rebar sleeve is provided with a lower connecting threaded section. A connecting sleeve is threadedly installed on the upper or lower connecting threaded section. The inner surface of the connecting sleeve is configured with an internal thread that mates with the upper and lower connecting threaded sections. The outer surface of the connecting sleeve is provided with a rotating fit structure. A back nut is also provided on the upper or lower connecting threaded section. This rebar sleeve achieves the connection of the upper and lower sections through threads, resulting in higher coaxiality and thus improving the collinearity after rebar butt welding. The back nut presses against the connecting sleeve to prevent thread loosening.

[0015] As a preferred embodiment of the rebar sleeve assembly, the rotating fit structure is either square or toothed. The rotating fit structure can be adapted to the correction components of the aforementioned connection device or a general pipe wrench, making it more flexible to use.

[0016] As can be seen from the above technical solutions, the advantages of this utility model are as follows: The push-pull mechanism of the guide sleeve and upper jaw ensures precise collinear connection of the rebar sleeves, significantly improving the axial mechanical performance of the rebar connection, and the operation process is simple and efficient; the unified design of the guide section, upper rebar sleeve, and lower rebar sleeve diameters allows the device to flexibly adapt to rebars with different spacings, simplifying the manufacturing process and eliminating the need to consider axial position requirements; the push-pull mechanism using a screw thread structure not only provides strong pulling force but also ensures structural stability; the correction component can complete the connection between the rebar sleeves without disassembly, avoiding the springback problem that may occur after disassembly and reconnection, further improving the convenience and stability of the connection; the coupling structure design reduces the manufacturing and usage costs of the device, and the pin connection method for transmitting torque ensures the simplicity and reliability of the structure; the bevel gear design improves the comfort and convenience of operation, while the gear mold protection box effectively protects the gear structure; the rebar sleeve assembly, through threaded connection, improves coaxiality and ensures collinearity, and the rotating fit structure design increases the flexibility of use. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0019] Figure 2 This is a cross-sectional view of Embodiment 1 of the present utility model. Figure 1 .

[0020] Figure 3 This is a cross-sectional view of Embodiment 1 of the present utility model. Figure 2 .

[0021] Explanation of main figure symbols

[0022] 1. First reinforcing bar, 2. Upper jaw, 3. Upper reinforcing bar sleeve, 4. Screw, 5. First positioning sleeve, 6. Second positioning sleeve, 7. Pin, 8. Back nut, 9. Connecting sleeve, 10. First bushing, 11. First bevel gear, 12. Spur gear, 13. Thrust bearing, 14. Second bevel gear, 15. Central shaft, 16. Second bushing, 17. Gear mold protection box, 18. Lower reinforcing bar sleeve, 19. Second reinforcing bar. Detailed Implementation

[0023] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0024] Example 1

[0025] like Figure 1-3 As shown, a rebar alignment and connection device includes a sleeve assembly and an alignment assembly:

[0026] The sleeve assembly includes an upper rebar sleeve 3 and a lower rebar sleeve 18, which are mated and fixed together. The lower part of the upper rebar sleeve 3 is provided with an upper connecting thread section, and the upper part of the lower rebar sleeve 18 is provided with a lower connecting thread section. A connecting sleeve 9 is installed on the upper or lower connecting thread section by threads. The inner surface of the connecting sleeve 9 is set with an internal thread that mates with the upper and lower connecting thread sections, and the outer surface of the connecting sleeve 9 is set with an external tooth surface. A back nut 8 is also provided on the upper or lower connecting thread section.

[0027] Furthermore, the connecting sleeve 9 and the back nut 8 are located on the same connecting thread segment (upper connecting thread segment or lower connecting thread segment), and the sum of their lengths is not less than the length of the connecting thread segment in the unconnected state. The length of the connecting sleeve is greater than the length of the other connecting thread segment. Figure 2 Taking the illustrated embodiment as an example, in the unconnected state, the connecting sleeve 9 and the back nut 8 are located on the upper connecting thread section, and their axial lengths are the same as the length of the upper connecting thread section. The length of the connecting sleeve 9 is greater than the length of the lower connecting thread section, that is, the length of the upper connecting thread section is greater than the length of the lower connecting thread section.

[0028] like Figure 2 As shown, when the sleeve assembly is in use, the upper part of the upper rebar sleeve 3 has a hole for inserting the rebar. After the first rebar 1 is inserted, the upper rebar sleeve 3 is squeezed by the extrusion device to reduce its upper diameter and hold the first rebar 1 tightly. Similarly, the second rebar 19 is connected to the lower end hole of the lower rebar sleeve 18. Then, the upper connecting thread section and the lower connecting thread section are joined together. The connecting sleeve 9 is screwed onto the lower connecting thread section. Since the length of the connecting sleeve 9 is greater than the length of the lower connecting thread section, the connecting sleeve 9 connects the upper rebar sleeve 3 and the lower rebar sleeve 18 at the same time, thus realizing the connection between the first rebar 1 and the second rebar 19. Then, the back nut 8 is locked downwards.

[0029] Adapted to the aforementioned sleeve assembly, the correction assembly includes a guide sleeve and an upper jaw 2. The guide sleeve includes a first positioning sleeve 5 and a second positioning sleeve 6, both of which are semi-cylindrical structures. The two are joined together to form a cylindrical guide sleeve assembly, which surrounds the lower rebar sleeve. A push-pull mechanism is provided between the guide sleeve and the upper jaw. The push-pull mechanism allows the guide sleeve and the upper jaw to move relative to each other in the axial direction of the rebar. Specifically, in this embodiment, the push-pull mechanism includes a screw 4 rotatably disposed outside the guide sleeve. The upper jaw 2 is provided with a threaded hole, and the upper thread of the screw 4 is installed in the threaded hole. The screw is connected to a drive structure. By driving the screw to rotate, the guide sleeve and the upper jaw can be moved closer or further apart. The inner hole of the guide sleeve has a first guide section that matches the outer diameter of the upper rebar sleeve 3 and a second guide section that matches the outer diameter of the lower rebar sleeve. In this embodiment, the outer diameter of the upper rebar sleeve 3 and the outer diameter of the lower rebar sleeve 18 are the same, and the inner diameter of the first guide section and the inner diameter of the second guide section are the same, that is, the inner diameter of the guide sleeve is uniform everywhere. In other embodiments, if the diameters of the upper rebar sleeve and the lower rebar sleeve are different, the guide sleeve can also be set in the form of a stepped hole.

[0030] The upper jaw 2 presses against the upper end of the upper steel bar sleeve 3 and can press the upper steel bar sleeve 3 into the second guide section. To adapt to this process, the lower end face of the upper steel bar sleeve 3 is provided with a transition chamfer on its outer periphery, and / or the upper end of the inner hole of the guide sleeve is provided with a transition chamfer.

[0031] For the connecting sleeve 9 of the sleeve assembly, the guide sleeve is also provided with a spur gear 12 that meshes with its outer tooth surface. Specifically, the guide sleeve is provided with a central shaft 15, the spur gear is mounted on the central shaft 15, the spur gear 12 is connected to a drive structure, the spur gear meshes with the outer tooth surface, and when the spur gear 12 rotates, it can drive the guide sleeve to move up and down.

[0032] In this embodiment, the spur gear 12 and the screw 4 are linked, that is, they share a common drive structure, such as... Figure 2 , Figure 3As shown, a toothed mold protection box 17 is provided on the outside of the first positioning sleeve 5. The central shaft 15 is installed in the toothed mold protection box 17 through the first bushing 10 and the second bushing 16. A coupling structure is provided between the upper end of the central shaft 15 and the lower end of the screw 4. The coupling structure includes a pin 7. The end of one of the central shaft 15 and the screw 4 is provided with an insertion hole, and the end of the other is inserted into the insertion hole. The hole wall of the insertion hole and the end of the other are provided with pin holes. The pin 7 is detachably inserted into the pin hole. A first bevel gear 11 is also provided on the central shaft 15, and a second bevel gear 14 is also provided on the guide sleeve. The first bevel gear 11 and the second bevel gear 14 mesh with each other. The rotation axis of the second bevel gear 14 is perpendicular to the length direction of the steel bar. An operating hole is provided at the center of the rear end face of the second bevel gear 14. The operating hole is exposed to the outside of the toothed mold protection box 17. A thrust bearing 13 is also provided below the spur gear 12.

[0033] When using the calibration component, such as Figure 1 As shown, the guide sleeve is fitted onto the lower rebar sleeve, and the upper jaw is clamped above the upper rebar sleeve. At this time, the pin 7 is installed in the pin hole. The construction worker inserts an internal wrench or other tools into the operating hole to rotate the second bevel gear. The central shaft drives the screw to rotate, and the guide sleeve moves upward. During the upward movement, the connecting sleeve is located on the upper rebar sleeve and does not mesh with the spur gear. The spur gear rotates freely. The upper rebar sleeve is corrected by the transition chamfer and enters the guide sleeve. When the guide sleeve moves to a certain point, the spur gear contacts the lower end of the outer tooth surface of the connecting sleeve and begins to mesh. At this time, the pin 7 is removed, and the central shaft no longer drives the screw to rotate. At this time, the positions of the upper rebar sleeve, the lower rebar sleeve, and the guide sleeve are relatively fixed. Continue to rotate the second bevel gear, and the spur gear drives the connecting sleeve to move downward to realize the connection between the upper rebar sleeve and the lower rebar sleeve. After the connection is completed, the correction component is removed, and the back nut is manually tightened.

[0034] Example 2

[0035] This embodiment is a rebar sleeve assembly, the structure of which is basically the same as the sleeve assembly in Embodiment 1, as shown in the reference. Figure 1-3 The assembly includes an upper rebar sleeve 3 and a lower rebar sleeve 18. The lower part of the upper rebar sleeve 3 is provided with an upper connecting threaded section, and the upper part of the lower rebar sleeve 18 is provided with a lower connecting threaded section. A rebar sleeve 9 is installed on the upper or lower connecting threaded section by threads. The inner surface of the rebar sleeve 9 is set with an internal thread that mates with the upper and lower connecting threaded sections. The outer surface of the rebar sleeve 9 is provided with a rotating fit structure. The upper or lower connecting threaded section is also provided with a back nut. The rotating fit structure is either a square or a toothed surface. When a toothed surface is used, the sleeve assembly can mate with the correction component of Embodiment 1. When a square is used, the sleeve assembly can be used independently.

[0036] As can be seen from the above embodiments, the beneficial effects of this utility model are as follows: The push-pull mechanism of the guide sleeve and upper jaw ensures precise collinear connection of the rebar sleeves, significantly improving the axial mechanical performance of the rebar connection; the operation process is simple and efficient. The unified design of the guide section, upper rebar sleeve, and lower rebar sleeve diameters allows the device to flexibly adapt to rebars with different spacings, simplifying the manufacturing process and eliminating the need to consider axial position requirements. The push-pull mechanism using a screw thread structure not only provides strong pulling force but also ensures structural stability. The correction component can complete the connection between the rebar sleeves without disassembly, avoiding the springback problem that may occur after disassembly and reconnection, further improving the convenience and stability of the connection. The coupling structure design reduces the manufacturing and usage costs of the device, and the pin connection method for transmitting torque ensures the simplicity and reliability of the structure. The bevel gear design improves the comfort and convenience of operation, while the gear mold protection box effectively protects the gear structure. The rebar sleeve assembly, through threaded connection, improves coaxiality and ensures collinearity; the rotating fit structure design increases the flexibility of use.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A reinforcing bar correction coupling device, characterised in that, Includes sleeve assembly and correction assembly: The sleeve assembly includes an upper rebar sleeve (3) and a lower rebar sleeve (18), which are connected and fixed to each other. The correction assembly includes a guide sleeve and an upper jaw (2). A push-pull mechanism is provided between the guide sleeve and the upper jaw. The push-pull mechanism enables the guide sleeve and the upper jaw to move relative to each other in the axial direction of the reinforcing bar. The inner hole of the guide sleeve has a first guide section that matches the outer diameter of the upper reinforcing bar sleeve (3) and a second guide section that matches the outer diameter of the lower reinforcing bar sleeve. The upper jaw (2) presses against the upper end of the upper reinforcing bar sleeve (3) and can press the upper reinforcing bar sleeve (3) into the second guide section.

2. The reinforcing bar correction coupling device according to claim 1, wherein The outer diameter of the upper steel bar sleeve (3) is the same as the outer diameter of the lower steel bar sleeve (18), and the inner diameter of the first guide section is the same as the inner diameter of the second guide section.

3. The reinforcing bar correction coupling device according to claim 1, wherein The lower end face of the upper steel bar sleeve (3) is provided with a transition chamfer on the outer periphery, and / or the upper end of the inner hole of the guide sleeve is provided with a transition chamfer.

4. The reinforcing bar correction coupling device according to claim 1, wherein The push-pull mechanism includes a screw (4) rotatably disposed outside the guide sleeve, and the upper jaw (2) is provided with a threaded hole, and the upper thread of the screw (4) is installed in the threaded hole.

5. The reinforcing bar correction coupling device according to claim 4, wherein The lower part of the upper rebar sleeve (3) is provided with an upper connecting thread section, and the upper part of the lower rebar sleeve (18) is provided with a lower connecting thread section. A connecting sleeve (9) is installed on the upper or lower connecting thread section by thread. The inner surface of the connecting sleeve (9) is set with an internal thread that mates with the upper and lower connecting thread sections. The outer surface of the connecting sleeve (9) is set with an external tooth surface. The guide sleeve is also provided with a spur gear (12) that mates with the external tooth surface. The upper or lower connecting thread section is also provided with a back nut.

6. The reinforcing bar correction coupling device according to claim 5, wherein The guide sleeve is provided with a central shaft (15), the spur gear is mounted on the central shaft (15), and a coupling structure is provided between the upper end of the central shaft (15) and the lower end of the screw (4).

7. The reinforcing bar correction coupling device according to claim 6, wherein The coupling structure includes a pin (7), and one end of the central shaft (15) and the screw (4) is provided with a insertion hole, and the other end is inserted into the insertion hole. The wall of the insertion hole and the other end are both provided with pin holes, and the pin (7) is detachably inserted into the pin holes.

8. The reinforcing bar correction coupling device according to claim 7, wherein The central shaft (15) is also provided with a first bevel gear (11), and the guide sleeve is also provided with a second bevel gear (14). The first bevel gear (11) and the second bevel gear (14) mesh with each other, and the rotation axis of the second bevel gear (14) is perpendicular to the length direction of the reinforcing bar.

9. The reinforcing bar correction coupling device according to claim 8, wherein A tooth mold protection box (17) is installed on the outer side wall of the guide sleeve. The central shaft (15) is located in the tooth mold protection box (17). An operation hole is provided at the center of the rear end face of the second bevel gear (14), and the operation hole is exposed to the outside of the tooth mold protection box (17).

10. A reinforcing sleeve assembly characterised in that, It includes an upper rebar sleeve (3) and a lower rebar sleeve (18). The lower part of the upper rebar sleeve (3) is provided with an upper connecting thread section, and the upper part of the lower rebar sleeve (18) is provided with a lower connecting thread section. A connecting sleeve (9) is installed on the upper or lower connecting thread section by thread. The inner surface of the connecting sleeve (9) is set with an internal thread that mates with the upper and lower connecting thread sections. The outer surface of the connecting sleeve (9) is provided with a rotating fit structure. The upper or lower connecting thread section is also provided with a back nut.

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