Split type steel bar connecting sleeve

Abstract

The utility model provides a split type reinforcing steel bar connecting sleeve. The split type reinforcing steel bar connecting sleeve comprises a buckling pipe of a multi-petal type split structure and two pairs of lock nuts. The inside and the outside of the buckling pipe are cylindrical, internal threads used for being connected with thread heads of two reinforcing steel bars are formed in the buckling pipe, the thread form, the thread pitch and the rotating direction of the internal threads are consistent with those of the thread heads of the reinforcing steel bars, and the outer diameter of the internal threads is slightly smaller than the outer diameter of the thread heads of the reinforcing steel bars; the two ends of the exterior of the buckling pipe are each provided with an external thread used for being connected with the corresponding pair of lock nuts. The two ends of the buckling pipe are locked through the double lock nuts respectively, installation operation can be completed through a conventional reinforcing steel bar wrench, and the buckling pipe is simple, convenient, economical, practical and capable of being used for modular connection and conventional reinforcing steel bar connection.

Description

Technical Field

[0001] The utility model belongs to the technical field of building steel bar connection, and in particular relates to a split steel bar connection sleeve. Background Art

[0002] At present, the steel bar connection in domestic civil engineering projects mainly adopts straight thread connection technology, while in the fields of nuclear power, bridges, etc., exploration of component prefabrication of steel bars has begun. Through industrial means, traditional single steel bars are processed into steel bar components in advance to shorten the construction period of the entire project.

[0003] Modular steel bar construction specifically refers to dividing the steel bar into different modules according to functional requirements in the steel bar processing plant, then tying them into a whole with steel wire, and then transporting them to the construction site. In this way, the tying is completed in the steel bar processing plant, saving time and effort.

[0004] After the steel bar parts are processed, all the steel bars cannot be rotated or moved. However, the steel bar parts are usually large in size and weight. During the lifting process, it is difficult to ensure that the steel wire heads to be connected are all aligned. There is a certain degree of deviation. Conventional sleeves are no longer suitable for this working condition. Therefore, it is necessary to develop a new type of steel bar joint to adapt to this working scenario and solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a split steel bar connection sleeve in view of the deficiencies in the prior art, which is used in working conditions where the steel bar wire heads are not aligned with each other in steel bar modular connection.

[0006] In order to solve the above technical problems, the present invention includes:

[0007] A split steel bar connecting sleeve comprises a snap-fit ​​tube of a multi-petal split structure and two pairs of lock nuts; the inside and outside of the snap-fit ​​tube are both cylindrical, the inside of the snap-fit ​​tube is provided with an internal thread for connecting with the thread heads of two steel bars, and the tooth profile, pitch and rotation direction of the internal thread are consistent with the tooth profile, pitch and rotation direction of the thread heads of the steel bars, and the outer diameter of the internal thread is slightly smaller than the outer diameter of the thread heads of the steel bars; the outer ends of the snap-fit ​​tube are respectively provided with an external thread for connecting with a corresponding pair of lock nuts.

[0008] Furthermore, the buckle tube is a two-flap structure.

[0009] Furthermore, an adjustment gap is left between the petals of the buckle tube.

[0010] Furthermore, the width of the adjustment gap is 2 to 6 mm.

[0011] Furthermore, the length of the external thread of the buckle tube is slightly greater than the sum of the lengths of a pair of lock nuts.

[0012] Furthermore, the tooth profile, pitch, rotation direction and outer diameter of the external thread of the buckle tube are consistent with the tooth profile, pitch, rotation direction and outer diameter of the internal thread of the lock nut.

[0013] Furthermore, the outer diameter of the internal thread of the buckled tube is 0.1 to 0.6 mm smaller than the outer diameter of the thread head of the steel bar.

[0014] Furthermore, the lock nut has an outer shape of a polygonal structure or a rounded polygonal structure.

[0015] The beneficial effects of the utility model are:

[0016] The split steel bar connection sleeve of the utility model adopts a principle similar to that of a clamp. The outer diameter of the internal thread of the buckle tube is slightly smaller than the outer diameter of the steel bar thread head. At the same time, the outer ends of the buckle tube adopt a double lock nut structure, thereby ensuring that the corresponding performance requirements can be met even when the two steel bar thread heads are not aligned. The utility model can be installed using a conventional steel bar wrench, which is simple, convenient, economical and practical. It can be used in modular connection scenarios of steel bar parts with a diameter of φ12 to 50 mm and conventional steel bar connection projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the application state of the utility model;

[0018] Figure 2 It is a schematic cross-sectional view of the application of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the buckle tube of the utility model;

[0020] Figure 4 It is a schematic diagram of the petal structure of the buckle tube of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the lock nut of the utility model;

[0022] In the figure: 1, steel bar, 2, lock nut, 3, buckle tube, 301, external thread, 302, internal thread, 303, adjustment seam. DETAILED DESCRIPTION

[0023] To facilitate understanding of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Those skilled in the art should understand that the embodiments are only intended to help understand the present invention and should not be considered as specific limitations of the present invention.

[0024] like Figure 1-4As shown, the utility model provides a split steel bar connection sleeve, including a buckle tube 3 of a multi-petal split structure and two pairs of lock nuts 2; the buckle tube 3 is cylindrical inside and outside, and an internal thread 302 for connecting with the thread heads of two steel bars 1 is provided inside the buckle tube 3, and the tooth profile, pitch and rotation direction of the internal thread 302 are consistent with the tooth profile, pitch and rotation direction of the thread head of the steel bar 1, and the outer diameter of the internal thread 302 is slightly smaller than the outer diameter of the thread head of the steel bar 1; the tooth profile, pitch and rotation direction of the thread heads of the two steel bars 1 in the figure are consistent. An external thread 301 for connecting with a corresponding pair of lock nuts 2 is provided at both ends of the outer side of the buckle tube 3, and the length of the external thread 301 is slightly greater than the length and of the pair of lock nuts 2, and the tooth profile, pitch, rotation direction and outer diameter of the external thread 301 are consistent with the tooth profile, pitch, rotation direction and outer diameter of the internal thread of the lock nut 2. An adjustment gap 303 is left between the petals of the buckled tube 3, and the width of the adjustment gap 303 varies according to the different specifications of the steel bars, and is usually 2 to 6 mm.

[0025] The split steel bar connection sleeve of the utility model adopts a principle similar to that of a clamp. The outer diameter of the internal thread 302 of the buckle tube 3 is slightly smaller than the outer diameter of the thread head of the steel bar 1. At the same time, the outer ends of the buckle tube 3 adopt a double lock nut structure, thereby ensuring that the corresponding performance requirements can be met even when the two steel bar threads are not aligned, thereby adapting to this working condition. At the same time, the length of the buckle tube 3 can be designed in series according to the different distances between the steel bar threads to be connected.

[0026] The buckle tube 3 of this embodiment is a two-petal structure consisting of two identical petals.

[0027] The four lock nuts 2 are identical, and the shape of the lock nuts 2 is a polygonal structure or as shown in FIG. Figure 5 The rounded polygonal structure shown.

[0028] The outer diameter of the internal thread 302 of the buckled tube 3 is 0.1 to 0.6 mm smaller than the outer diameter of the thread head of the steel bar 1 .

[0029] When the utility model connects two steel bars 1, firstly, two pairs of lock nuts 2 are respectively put on the two steel bars 1, and then all the petals of the buckle tube 3 are buckled onto the thread heads of the two steel bars 1. The installation process should ensure that the end faces of all the petals of the buckle tube 3 remain flush, and at the same time, the size of the adjustment gap 303 between the petals is as similar as possible. In order to ensure the performance and quality of the connection, according to the requirements of JGJ 107 "Technical Regulations for Mechanical Connection of Steel Bars", the exposed threads on both sides of the buckle tube 3 should be less than 2P (P is the single pitch of the thread). Use a steel bar wrench or other similar tools to screw the first lock nut 2 on the two steel bars 1 close to the buckle tube 3 into the center of the buckle tube 3 until it is tightened to the specified torque requirement, and then screw the second lock nut 2 on the two steel bars 1 into the center of the buckle tube 3, and also tighten it to the specified torque requirement, and the installation of the split steel bar connection sleeve is completed.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A split steel bar connecting sleeve, characterized in that: The invention comprises a buckle tube (3) of a multi-petal split structure and two pairs of lock nuts (2); the buckle tube (3) is cylindrical inside and outside, and an internal thread (302) for connecting to the thread heads of two steel bars is provided inside the buckle tube (3); the tooth profile, pitch and rotation direction of the internal thread (302) are consistent with the tooth profile, pitch and rotation direction of the thread heads of the steel bars, and the outer diameter of the internal thread (302) is slightly smaller than the outer diameter of the thread heads of the steel bars; the outer ends of the buckle tube (3) are respectively provided with an external thread (301) for connecting to a corresponding pair of lock nuts (2); and an adjustment gap (303) is left between the petals of the buckle tube (3).

2. The split steel bar connecting sleeve according to claim 1 is characterized in that: The buckle tube (3) is a two-flap structure.

3. The split steel bar connecting sleeve according to claim 1 is characterized in that: The width of the adjustment gap (303) is 2 to 6 mm.

4. The split steel bar connecting sleeve according to claim 1 is characterized in that: The length of the external thread (301) of the buckle tube (3) is slightly greater than the sum of the lengths of the pair of lock nuts (2).

5. The split steel bar connecting sleeve according to claim 1 is characterized in that: The tooth profile, thread pitch, rotation direction and outer diameter of the external thread (301) of the buckle tube (3) are consistent with the tooth profile, thread pitch, rotation direction and outer diameter of the internal thread of the lock nut (2).

6. The split steel bar connecting sleeve according to claim 1, characterized in that: The outer diameter of the internal thread (302) of the buckled tube (3) is 0.1 to 0.6 mm smaller than the outer diameter of the thread head of the steel bar.

7. The split steel bar connecting sleeve according to claim 1 is characterized in that: The lock nut (2) has an outer shape of a polygonal structure or a rounded polygonal structure.

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