Multidirectional adjustable combined steel bar connecting device

Abstract

The utility model discloses a multidirectional adjustable combined type steel bar connecting device which comprises a connecting sleeve, one end in the connecting sleeve is provided with a compression screw sleeve, the compression screw sleeve is used for connecting a steel bar at one end, the other end in the connecting sleeve is provided with an adjustable screw sleeve, and the adjustable screw sleeve is used for connecting a steel bar at the other end. An adjusting screw sleeve is further arranged between the pressing screw sleeve and the adjustable screw sleeve, an inner screw sleeve is further arranged between the adjustable screw sleeve and the connecting sleeve, and one end of the inner screw sleeve extends out of the connecting sleeve. The reinforcing steel bar connecting device can improve the reinforcing steel bar connecting quality, reduce the cost, relieve the labor intensity and achieve equal-strength connection of reinforcing steel bars, can be widely applied to reinforcing steel bar connection of building construction and reinforcing steel bar connection of assembly type building components, and is suitable for vertical connection, horizontal connection and oblique connection of reinforcing steel bars of cast-in-place construction and assembly type buildings.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar connection in building construction, in particular to a multi-directional adjustable combined steel bar connection device. Background Art

[0002] At present, the threaded sleeve connection method is widely used for mechanical connection of steel bars in building structures. The principle is to make steel wire heads with corresponding threads on the ends of two steel bars, and then use a connecting sleeve with corresponding internal threads to connect the two steel bars by rotating the sleeve and the steel bar in sequence. During the connection process, at least one steel bar must rotate and move axially. If there is axial or radial offset in the connected bars, the corresponding connection will not be possible. Therefore, this type of steel bar connection method is only suitable for single steel bar connection, and the steel bar cannot be offset. For the overall connection of multiple steel bar components (steel mesh, steel cage), as well as the steel bar connection of building components, or if some steel bars are offset, since the steel bars cannot rotate or move, the above connection method is difficult to achieve steel bar connection. Summary of the Invention

[0003] The purpose of the utility model is to provide a multi-directional adjustable combined steel bar connecting device to solve the problems existing in the prior art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A multi-directional adjustable combined steel bar connection device includes a connecting sleeve, one end of the connecting sleeve is provided with a compression screw sleeve, the compression screw sleeve is used to connect the steel bars at one end, the other end of the connecting sleeve is provided with an adjustable screw sleeve, the adjustable screw sleeve is used to connect the steel bars at the other end, and an inner screw sleeve is also provided between the adjustable screw sleeve and the connecting sleeve, one end of the inner screw sleeve extends out from the connecting sleeve.

[0006] This multi-directionally adjustable combined steel bar connection device, through the arrangement of the compression screw sleeve and the adjustable screw sleeve, can effectively connect the steel bars inserted at both ends. By tightening the connecting sleeve and the inner screw sleeve, a secure connection between the two steel bars is achieved. This connection device can improve the quality of steel bar connections, reduce costs, alleviate labor intensity, and achieve strong connections such as steel bars. It can also be widely used in steel bar connections in construction and steel bar connections in prefabricated building components. It is suitable for vertical, horizontal, and diagonal connections of steel bars in cast-in-place construction and prefabricated buildings. The connection performance of the resulting steel bar joint can meet the corresponding technical standards for steel bar joints in China and abroad.

[0007] Furthermore, an adjusting screw sleeve is provided between the compression screw sleeve and the adjustable screw sleeve, one end of the adjusting screw sleeve abuts against the end surface of the compression screw sleeve, and the other end is sleeved on the adjustable screw sleeve.

[0008] The setting of the adjusting screw sleeve, in conjunction with the adjustable screw sleeve, can further adjust the axial spacing and axial deviation, and make the fatigue resistance of the joint of the connecting device more superior. At the same time, it also realizes the connection when the two connected steel bars cannot rotate, thereby fully ensuring the tensile strength of the joint.

[0009] Furthermore, a boss structure is provided on the inner circumference of one end of the connecting sleeve, and the tightening screw sleeve abuts against the boss structure. A first internal thread is provided on the inner circumference of the other end of the connecting sleeve for connecting the internal screw sleeve; a nut position is provided in the middle of the inner circumference of the connecting sleeve near the first internal thread.

[0010] Furthermore, a first chamfer is provided at the opening of the boss structure, and a second chamfer is provided at the end of the connecting sleeve; an identification area and a first polygonal screwing position are also provided on the outside of the connecting sleeve, the identification area is arranged on the side where the tightening screw sleeve is located, and the first polygonal screwing position is arranged on the side where the inner screw sleeve is located.

[0011] Furthermore, the inner circumference of the compression screw sleeve is provided with a second internal thread, the outer circumference of the compression screw sleeve is a variable diameter structure, the end with a small outer diameter is arranged toward the direction of the adjustable screw sleeve and the outer circumference is provided with a second polygonal screwing position.

[0012] Furthermore, one end of the adjustable screw sleeve is closed, and a third internal thread is provided on the inner periphery; the outer periphery of the adjustable screw sleeve is a stepped structure, and is provided with a second external thread and a third polygonal screwing position.

[0013] Furthermore, the outer periphery of the inner screw sleeve is provided with a third external thread, and one end of the inner screw sleeve is provided with an inner peripheral protrusion and an outer peripheral protrusion, the inner peripheral protrusion abuts the end of the adjustable screw sleeve, and the outer peripheral protrusion is arranged on the outside of the end of the connecting sleeve.

[0014] Furthermore, one end of the compression screw sleeve is closed, and the other end is provided with a fourth internal thread connected to the adjustable screw sleeve, and the end of the compression screw sleeve is provided with a third chamfer.

[0015] Furthermore, the ends of the steel bars are respectively provided with threaded threads.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The multi-directional adjustable combined steel bar connecting device can better connect the steel bars inserted at both ends through the arrangement of the compression screw sleeve and the adjustable screw sleeve, and realize the firm connection of the two steel bars by tightening the connecting sleeve and the inner screw sleeve; 2. The arrangement of the adjusting screw sleeve, in conjunction with the adjustable screw sleeve, can further adjust the axial spacing and axial deviation, and make the fatigue resistance of the joint of the connecting device more superior, and also realize the connection when the two connected steel bars cannot rotate, so that the tensile strength of the joint can be fully guaranteed; 3. The present connecting device can greatly improve the Improve the quality of steel bar connection, reduce costs, reduce labor intensity, achieve strong connection of steel bars, achieve offset connection of steel bars, and improve the fault tolerance of steel bar connection; it can be applied to vertical connection, horizontal connection and oblique connection of steel bars in cast-in-place construction and prefabricated buildings, and meet the requirements of current technical standards; 4. This connection method adopts the outer and inner diameter difference between the compression screw sleeve and the connecting sleeve and the inner and outer diameter difference between the adjustable screw sleeve and the inner screw sleeve to achieve radial deviation adjustment, and adopts the connection method of the adjusting screw sleeve and the adjustable screw sleeve to achieve axial deviation adjustment, and makes the fatigue resistance of the joint more superior, so the tensile strength of the joint can be fully guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an overall schematic diagram of a multi-directional adjustable combined steel bar connection device of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of a pair of steel bars of the present invention;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the adjusting screw sleeve of the utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the connecting sleeve of the utility model;

[0021] Figure 5 This is an axial schematic diagram of the end face of the connecting sleeve of the utility model;

[0022] Figure 6 This is a schematic diagram of the cross-sectional structure of the compression screw sleeve of the utility model;

[0023] Figure 7 This is an axial schematic diagram of the end face of the compression screw sleeve of the utility model;

[0024] Figure 8 This is a schematic diagram of the cross-sectional structure of the adjustable screw sleeve of the utility model;

[0025] Figure 9 This is a schematic diagram of the cross-sectional structure of the internal threaded sleeve of the present utility model;

[0026] In the figure: 1. Steel bar; 101. Threaded thread; 2. Connecting sleeve; 201. Boss structure; 202. First internal thread; 203. Nut position; 204. First chamfer; 205. Second chamfer; 206. Identification area; 207. First polygonal screwing position; 3. Compression screw sleeve; 301. Second internal thread; 302. Second polygonal screwing position; 4. Adjusting screw sleeve; 401. Fourth internal thread; 402. Third chamfer; 5. Adjustable screw sleeve; 501. Third internal thread; 502. Second external thread; 503. Third polygonal screwing position; 6. Internal screw sleeve; 601. Third external thread; 602. Inner protrusion; 603. Outer protrusion. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] like Figure 1 As shown, a multi-directional adjustable combined steel bar connection device includes a connecting sleeve 2, one end of the connecting sleeve 2 is provided with a compression screw sleeve 3, the compression screw sleeve 3 is used to connect the steel bar at one end, the other end of the connecting sleeve 2 is provided with an adjustable screw sleeve 5, the adjustable screw sleeve 5 is used to connect the steel bar at the other end, and an inner screw sleeve 6 is further provided between the adjustable screw sleeve 5 and the connecting sleeve 2, one end of the inner screw sleeve 6 extends from the connecting sleeve 2.

[0030] This multi-directional adjustable combined steel bar connection device can better connect the steel bars inserted at both ends through the arrangement of the compression screw sleeve 3 and the adjustable screw sleeve 5, and achieve a firm connection between the two steel bars by tightening the connecting sleeve 2 and the inner screw sleeve 6. This connection device greatly improves the quality of steel bar connection, reduces costs, reduces labor intensity, achieves strong connections between steel bars, achieves offset connections between steel bars, and improves the fault tolerance rate of steel bar connections; this device can be widely used in steel bar connections in construction and steel bar connections of prefabricated building components, and is suitable for vertical, horizontal, and oblique connections of steel bars in cast-in-place construction and prefabricated buildings. The connection performance of the steel bar joint formed by this device can meet the corresponding technical standards for steel bar joints at home and abroad.

[0031] Furthermore, an adjusting screw sleeve 4 is provided between the compression screw sleeve 3 and the adjustable screw sleeve 5 , and one end of the adjusting screw sleeve 4 abuts against the end surface of the compression screw sleeve 3 , and the other end is sleeved on the adjustable screw sleeve 5 .

[0032] Further, such as Figure 2 As shown, the ends of the steel bars 1 are respectively provided with thread head threads 101 .

[0033] The setting of the adjusting screw sleeve 4, in conjunction with the adjustable screw sleeve 5, can further adjust the axial spacing and axial deviation, and make the fatigue resistance of the joint of the connecting device more superior. At the same time, it also realizes the connection when the two connected steel bars cannot rotate, so the tensile strength of the joint can be fully guaranteed.

[0034] Through the above technical solution, the connecting sleeve 2 and the inner screw sleeve 6 are respectively inserted into the connected steel bars, and the end with the thread is facing the connected node. The compression screw sleeve 3 and the adjustable screw sleeve 5 are respectively screwed into the thread head threads 101 of the two connected steel bars, and the adjustment screw sleeve 4 is screwed into the external threaded hole of the adjustable screw sleeve 5 to adjust the axial distance between the connected steel bars and eliminate the gap between the steel bars; the connecting sleeve and the inner screw sleeve are moved toward each other along the axis of the steel bar, and the internal threaded hole of the connecting sleeve 2 is tightly fitted with the external thread of the inner screw sleeve 6; the connecting sleeve 2 and the inner screw sleeve 6 are fully tightened to fully compress the adjustment screw sleeve 4 and the compression screw sleeve 3 to achieve the steel bar connection. This connection method realizes radial deviation adjustment by using the difference in outer and inner diameters between the compression screw sleeve and the connecting sleeve and the difference in inner and outer diameters between the adjustable screw sleeve and the inner screw sleeve, and realizes axial deviation adjustment by connecting the adjusting screw sleeve and the adjustable screw sleeve, and makes the fatigue resistance of the joint more superior, so that the tensile strength of the joint can be fully guaranteed.

[0035] Further, combined Figure 3As shown, the material of the adjusting screw sleeve 4 is high-quality carbon steel. One end of the adjusting screw sleeve 4 is closed, which can better abut against the clamping screw sleeve 3. The other end is provided with a fourth internal thread 401 connected to the adjustable screw sleeve 5, which can not only better connect the adjustable screw sleeve 5, but also flexibly adjust the axial spacing; the end of the adjusting screw sleeve 4 is provided with a third chamfer 402.

[0036] Further, combined Figure 4 and Figure 5 As shown, the material of the connecting sleeve 2 is high-quality carbon steel, and a boss structure 201 is provided on the inner circumference of one end of the connecting sleeve 2, so that the clamping screw sleeve 3 can abut against the boss structure 201 to limit the clamping screw sleeve 3, and the steel bar can pass through the boss structure 201 to be connected to the clamping screw sleeve 3; a first internal thread 202 is provided on the inner circumference of the other end of the connecting sleeve 2 for connecting the internal screw sleeve 6; a nut position 203 is provided on the middle part of the inner circumference of the connecting sleeve 2 near the first internal thread.

[0037] Furthermore, a first chamfer 204 is provided at the opening of the boss structure 201, and a second chamfer 205 is provided at the end of the connecting sleeve 2; an identification area 206 and a first polygonal screwing position 207 are also provided on the outside of the connecting sleeve 2, and the identification area 206 is arranged on the side where the tightening screw sleeve is located to facilitate identification of the direction of the connecting sleeve and to facilitate determination of which component is connected to this side; the first polygonal screwing position 207 is arranged on the side where the inner screw sleeve is located to facilitate the use of tools, such as a wrench, for tightening operations, maintaining an integral cylindrical structure.

[0038] Further, combined Figure 6 and Figure 7 As shown, the compression screw 3 is made of high-quality carbon steel. The inner circumference of the compression screw 3 is provided with a second internal thread 301 that matches the thread of the steel wire head. The outer circumference of the compression screw 3 is a variable diameter structure with an arc transition. The large diameter end abuts the boss structure 201, and the small diameter end is arranged in the direction of the adjustable screw sleeve 5. The outer circumference is provided with a second polygonal screwing position 302 to facilitate the screwing operation using a wrench. The outer circumference of the compression screw 3 can also be a cylindrical structure.

[0039] Further, combined Figure 8 As shown, the material of the adjustable screw sleeve 5 is high-quality carbon steel, one end of the adjustable screw sleeve 5 is closed, and the inner circumference is provided with a third internal thread 501 that matches the thread of the steel wire head; the outer circumference of the adjustable screw sleeve 5 is a stepped structure, and the closed end is provided with a second external thread 502 connected to the adjusting screw sleeve, and the middle is provided with a third polygonal screwing position 503 for wrench tightening operation.

[0040] Further, combined Figure 9 As shown, the material of the inner thread sleeve 6 is high-quality carbon steel, and the outer periphery of the inner thread sleeve 6 is provided with a third outer thread 601 adapted to the first inner thread on the connecting sleeve 2. One end of the inner thread sleeve 6 is provided with an inner peripheral protrusion 602 and an outer peripheral protrusion 603. The inner peripheral protrusion 602 abuts the end of the adjustable screw sleeve 5, and the outer peripheral protrusion 603 is arranged on the outside of the end of the connecting sleeve 2, with a little distance from or just abutting the end of the connecting sleeve 2; the outer periphery of the outer peripheral protrusion 603 can also be provided with a polygonal screwing position.

[0041] The first chamfer, the second chamfer and the third chamfer recorded above are all chamfered right-angle structures or chamfered rounded structures. The axial inclination angle of the chamfer is 15° to 75°, and the end face is smooth and has no barbs, which is conducive to the docking of components, avoids sharp corners that hurt people and objects, and can also avoid stress concentration.

[0042] In some embodiments, the steel bars connected to the compression screw sleeve 3 and the adjustable screw sleeve 5 may be of the same diameter, or may have 1 to 2 diameters.

[0043] A method of using the multi-directional adjustable combined sleeve connection device is as follows: first, the connection ends of the two connected steel bars 1 are processed into steel bar thread heads using special equipment;

[0044] Step 1: Insert the small-diameter end of the connecting sleeve 2 into the steel bar, with the large-diameter end facing the end of the steel bar; that is, align the small-diameter end of the connecting sleeve 2 with the thread 101 of the connected steel bar 1 and insert it, moving along the axis of the steel bar;

[0045] Step 2: Screw the compression screw sleeve into the thread head of the steel bar, that is, screw the compression screw sleeve 3 into the thread head 101 of the connected steel bar 1;

[0046] Step 3: Take another connected steel bar, insert the small hole end of the inner screw sleeve 6 into the steel bar, so that the large hole end faces the end of the steel bar; that is, align the small hole end of the inner screw sleeve 6 with the connected steel bar and insert it, and move it along the axis of the steel bar;

[0047] Step 4: Screw the adjustable screw sleeve 5 into the thread head 101 of the steel bar; that is, screw the third internal thread 501 of the adjustable screw sleeve 5 into the thread head 101 of the steel bar, and rotate and tighten;

[0048] Step 5: Screw the adjusting screw sleeve 4 into the end of the adjustable screw sleeve 5, and connect the fourth internal thread 401 of the adjusting screw sleeve 4 with the second external thread 502 of the adjustable screw sleeve;

[0049] Step 6: Move the two connected steel bars to the positioning point, adjust the adjusting screw sleeve 4 to eliminate the gap, and make the connected steel bars tightly against each other;

[0050] Step 7: Move the connecting sleeve 2 and the inner threaded sleeve 6 toward each other along the axis of the steel bar, so that the first inner thread 202 of the connecting sleeve 2 is screwed into the third outer thread 601 of the inner threaded sleeve 6;

[0051] Step 8: Use a wrench to tighten the connecting sleeve 2 and the inner thread sleeve 6 to the nut position 203, so that the two steel bars are tightly connected together.

[0052] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-directional adjustable combined steel bar connection device, comprising a connecting sleeve, characterized in that: A compression screw sleeve is provided at one end of the connecting sleeve, and the compression screw sleeve is used to connect the steel bars at one end. An adjustable screw sleeve is provided at the other end of the connecting sleeve, and the adjustable screw sleeve is used to connect the steel bars at the other end. An inner screw sleeve is also provided between the adjustable screw sleeve and the connecting sleeve, and one end of the inner screw sleeve extends out from the connecting sleeve.

2. The multi-directional adjustable combined steel bar connection device according to claim 1, characterized in that: An adjusting screw sleeve is further provided between the compression screw sleeve and the adjustable screw sleeve. One end of the adjusting screw sleeve abuts against the end surface of the compression screw sleeve, and the other end is sleeved on the adjustable screw sleeve.

3. The multi-directional adjustable combined steel bar connection device according to claim 1, characterized in that: A boss structure is provided on the inner periphery of one end of the connecting sleeve, and the compression screw sleeve abuts against the boss structure. A first internal thread is provided on the inner periphery of the other end of the connecting sleeve for connecting to the internal screw sleeve; a nut position is provided in the middle of the inner periphery of the connecting sleeve near the first internal thread.

4. The multi-directional adjustable combined steel bar connection device according to claim 3, characterized in that: A first chamfer is provided at the opening of the boss structure, and a second chamfer is provided at the end of the connecting sleeve; an identification area and a first polygonal screwing position are also provided on the outside of the connecting sleeve, the identification area is arranged on the side where the tightening screw sleeve is located, and the first polygonal screwing position is arranged on the side where the inner screw sleeve is located.

5. The multi-directional adjustable combined steel bar connection device according to claim 1, characterized in that: The inner circumference of the compression screw sleeve is provided with a second internal thread, the outer circumference of the compression screw sleeve is a variable diameter structure, the end with a small outer diameter is arranged toward the direction of the adjustable screw sleeve and the outer circumference is provided with a second polygonal screwing position.

6. The multi-directional adjustable combined steel bar connection device according to claim 1, characterized in that: One end of the adjustable screw sleeve is closed, and a third internal thread is provided on the inner periphery; the outer periphery of the adjustable screw sleeve is a stepped structure, and is provided with a second external thread and a third polygonal screwing position.

7. The multi-directional adjustable combined steel bar connection device according to claim 1, characterized in that: The outer periphery of the inner screw sleeve is provided with a third external thread, and one end of the inner screw sleeve is provided with an inner peripheral protrusion and an outer peripheral protrusion, the inner peripheral protrusion abuts the end of the adjustable screw sleeve, and the outer peripheral protrusion is arranged on the outside of the end of the connecting sleeve.

8. The multi-directional adjustable combined steel bar connection device according to claim 2, characterized in that: One end of the compression screw sleeve is closed, and the other end is provided with a fourth internal thread connected to the adjustable screw sleeve. The end of the compression screw sleeve is provided with a third chamfer.

9. The multi-directional adjustable combined steel bar connection device according to claim 1, characterized in that: The ends of the steel bars are respectively provided with threaded threads.

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