Mechanical sleeve joint suitable for high-strength steel bars

Abstract

The utility model discloses a kind of mechanical sleeve joint suitable for high-strength reinforcing steel bars, including sleeve joint and reinforcing steel bar, the sleeve joint and reinforcing steel bar are threadedly connected, the sleeve joint and reinforcing steel bar are commonly provided with anti-loosening structure, the both ends of the sleeve joint are all provided with internal thread hole, the both ends of the reinforcing steel bar are integrally provided with threaded pin, it is related to reinforcing steel bar connecting structure technical field, reinforcing steel bar and sleeve joint are threadedly connected, and by anti-loosening structure on reinforcing steel bar and sleeve joint, effectively avoid the relative rotation between reinforcing steel bar and sleeve joint after connection, avoid the loosening between reinforcing steel bar and sleeve joint;By setting reinforcing threaded pin in internal thread hole, and setting reinforcing internal thread hole that is threadedly connected with reinforcing threaded pin on threaded pin, so that the threaded contact surface between sleeve joint and reinforcing steel bar is larger, so as to improve the connection strength.

Description

Technical Field

[0001] This utility model relates to the field of steel bar connection structure technology, specifically a mechanical sleeve joint suitable for high-strength steel bars. Background Technology

[0002] In the prior art, Chinese Patent Publication No. CN216276479U discloses a mechanical sleeve joint suitable for high-strength reinforcing bars, including two reinforcing bars and a main sleeve for connecting the two reinforcing bars at their close-to-each ends. The close-to-each ends of the two reinforcing bars are respectively provided with external threads. The joint also includes an auxiliary sleeve connected to the end of the reinforcing bars, threadedly connected to the end of the reinforcing bars, and the outer wall of the auxiliary sleeve is provided with external threads adapted to the internal threads of the main sleeve. The inner ring of the auxiliary sleeve is conical, with the smaller cross-sectional area end positioned close to the main sleeve, and the inner diameter of the larger cross-sectional area end equal to the outer diameter of the reinforcing bar end. When the auxiliary sleeve is connected to the end of the reinforcing bar, the outer wall of the auxiliary sleeve expands towards the inner wall of the main sleeve. This application has the effect of ensuring a tight connection between the reinforcing bar end and the sleeve even when the outer diameter of the reinforcing bar end is small.

[0003] The aforementioned patent has the following shortcomings:

[0004] 1) The steel bars are only connected by threads. When one of the steel bars is subjected to torque and rotates, the steel bar is prone to relative rotation with the sleeve, which will cause the steel bar and the sleeve to loosen.

[0005] 2) The connection structure may be relatively simple, and the connection area between the steel bar and the sleeve joint may be limited. As a result, it may loosen under the action of external forces, which may lead to poor connection firmness, thus affecting the stability of the connection and providing weak protection for the connection. Utility Model Content

[0006] In view of the problems existing in the current mechanical sleeve joint applicable to high-strength steel bars, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a mechanical sleeve joint suitable for high-strength steel bars, which solves the problems existing in the above-mentioned patents. The steel bars are only connected by threads. When one of the steel bars is subjected to torque and rotates, the steel bar is prone to relative rotation with the sleeve, which leads to loosening between the steel bar and the sleeve. The connection structure may be relatively simple, and the connection area between the steel bar and the sleeve joint may be limited. Therefore, it may loosen under the action of external force, resulting in poor connection firmness, affecting the stability of the connection, and providing weak protection for the connection.

[0008] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0009] A mechanical sleeve joint suitable for high-strength steel bars includes a sleeve joint and a steel bar, wherein the sleeve joint and the steel bar are threadedly connected, and both the sleeve joint and the steel bar are provided with an anti-loosening structure.

[0010] As a preferred embodiment of the mechanical sleeve joint applicable to high-strength steel bars described in this utility model, the sleeve joint has internal threaded holes at both ends, and the steel bar has threaded pins integrally provided at both ends. The diameter of the internal threaded hole is adapted to the diameter of the threaded pin, and the inner wall of the internal threaded hole can be threadedly connected to the threaded pin.

[0011] As a preferred embodiment of the mechanical sleeve joint applicable to high-strength steel bars described in this utility model, the anti-loosening structure includes a first ring on the steel bar and a second ring on the sleeve joint. Both the first ring and the second ring are provided with internal threaded holes. When the sleeve joint and the steel bar are in a tight connection state, the internal threaded holes on the first ring and the second ring are aligned.

[0012] As a preferred embodiment of the mechanical sleeve joint applicable to high-strength steel bars described in this utility model, the anti-loosening structure includes a limiting through hole opened on the side wall of the internal threaded hole, and a groove opened on the threaded pin. A spring is welded on the bottom wall of the groove, and a limiting block is welded to the other end of the spring. The inner wall of the groove and the limiting block are slidably connected.

[0013] As a preferred embodiment of the mechanical sleeve joint applicable to high-strength steel bars described in this utility model, the outer diameter of the limiting block and the inner diameter of the limiting hole are matched. When the threaded pin is inserted into the internal threaded hole to tightly connect the steel bar and the sleeve joint, the limiting block is inserted into the limiting hole.

[0014] As a preferred embodiment of the mechanical sleeve joint applicable to high-strength steel bars described in this utility model, the anti-loosening structure further includes a reinforcing threaded pin disposed in the internal threaded hole and a reinforcing internal threaded hole opened on the threaded pin. The diameter of the reinforcing threaded pin is adapted to the diameter of the reinforcing internal threaded hole, and the inner wall of the reinforcing internal threaded hole can be threadedly connected to the reinforcing threaded pin. The reinforcing threaded pin and the sleeve joint are integrally formed.

[0015] As a preferred embodiment of the mechanical sleeve joint applicable to high-strength steel bars described in this utility model, the anti-loosening structure further includes a reinforcing threaded pin disposed in the internal threaded hole and a reinforcing internal threaded hole opened on the threaded pin. The diameter of the reinforcing threaded pin is adapted to the diameter of the reinforcing internal threaded hole, and the inner wall of the reinforcing internal threaded hole can be threadedly connected to the reinforcing threaded pin. The reinforcing threaded pin and the sleeve joint are integrally formed.

[0016] Compared with existing technologies:

[0017] 1. The rebar and the sleeve joint are threaded together, and the anti-loosening structure on the rebar and the sleeve joint effectively prevents relative rotation between the rebar and the sleeve joint after connection, thus preventing loosening between the rebar and the sleeve joint.

[0018] 2. By setting a reinforcing threaded pin in the internal threaded hole and opening a reinforcing internal threaded hole on the threaded pin to be threadedly connected to the reinforcing threaded pin, the threaded contact surface between the sleeve joint and the reinforcing bar is larger, thereby improving the connection strength. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model;

[0020] Figure 2 This is a structural schematic diagram of Embodiment 2 of the present invention;

[0021] Figure 3 A bottom sectional view of the reinforcing bar provided in Embodiment 2 of this utility model;

[0022] Figure 4 This is a structural schematic diagram of Embodiment 3 of the present utility model;

[0023] Figure 5 This is a side view of the reinforcing bar provided in Embodiment 3 of this utility model;

[0024] Figure 6 This is a structural schematic diagram of Embodiment 4 of the present invention.

[0025] In the diagram: 1. Rebar 1, 11. First ring 12. Threaded pin 13. Limiting block 14. Groove 15. Reinforced internal threaded hole 16. Spring 17. Sleeve connector 2, 21. Second ring 22. Internal threaded hole 23. Limiting through hole 24. Reinforced threaded pin 25. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] Example 1:

[0028] This utility model provides a mechanical sleeve joint suitable for high-strength steel bars. Please refer to [link / reference]. Figure 1The sleeve joint 2 and the reinforcing bar 1 are included. The sleeve joint 2 has a symmetrical structure at both ends, so both ends of the sleeve joint 2 can be connected to the reinforcing bar 1. The sleeve joint 2 and the reinforcing bar 1 are threaded together. Specifically, both ends of the sleeve joint 2 are provided with internal threaded holes 22, and both ends of the reinforcing bar 1 are integrally provided with threaded pins 12. The diameter of the internal threaded hole 22 is matched with the diameter of the threaded pin 12, and the inner wall of the internal threaded hole 22 can be threadedly connected to the threaded pin 12. The sleeve joint 2 is threadedly connected to the threaded pin 12 through the internal threaded hole 22, thereby realizing the connection between the sleeve joint 2 and the reinforcing bar 1. The sleeve joint 2 and the reinforcing bar 1 are provided with an anti-loosening structure. The purpose of the anti-loosening structure is to prevent relative rotation between the sleeve joint 2 and the reinforcing bar 1 after connection, thereby avoiding loosening of the threaded connection between the sleeve joint 2 and the reinforcing bar 1.

[0029] The anti-loosening structure includes a first ring 11 on the reinforcing bar 1 and a second ring 21 on the sleeve joint 2. Both the first ring 11 and the second ring 21 are provided with internal threaded holes. When the sleeve joint 2 and the reinforcing bar 1 are in a tight connection, the internal threaded holes on the first ring 11 and the second ring 21 are aligned. After the reinforcing bar 1 and the sleeve joint 2 are threadedly connected, the first ring 11 and the second ring 21 are aligned, and then the first ring 11 and the second ring 21 are fixed together with bolts, thereby restricting the relative rotation between the reinforcing bar 1 and the sleeve joint 2.

[0030] In practical use, the sleeve connector 2 is threadedly connected to the threaded pin 12 through the internal threaded hole 22, thereby realizing the connection between the sleeve connector 2 and the reinforcing bar 1; the first ring 11 and the second ring 21 are aligned, and then the first ring 11 and the second ring 21 are fixed together with bolts, thereby restricting the relative rotation between the reinforcing bar 1 and the sleeve connector 2.

[0031] Example 2:

[0032] See attached document Figure 2-3 Unlike Embodiment 1, the anti-loosening structure includes a limiting through hole 23 on the side wall of the internal threaded hole 22, and a groove 14 on the threaded pin 12. A spring 16 is welded to the bottom wall of the groove 14, and a limiting block 13 is welded to the other end of the spring 16. The inner wall of the groove 14 and the limiting block 13 are slidably connected. The outer diameter of the limiting block 13 is matched with the inner diameter of the limiting through hole 23. When the threaded pin 12 is inserted into the internal threaded hole 22 to tightly connect the reinforcing bar 1 and the sleeve joint 2, the limiting block 13 is aligned with the limiting through hole 23. Under the elastic drive of the spring 16, the limiting block 13 passes through the limiting through hole 23, thereby restricting the relative rotation between the reinforcing bar 1 and the sleeve joint 2.

[0033] In practical use, the sleeve joint 2 is threadedly connected to the threaded pin 12 through the internal threaded hole 22, thereby realizing the connection between the sleeve joint 2 and the reinforcing bar 1; the limiting block 13 is aligned with the limiting through hole 23, and under the elastic force of the spring 16, the limiting block 13 passes through the limiting through hole 23, thereby restricting the relative rotation between the reinforcing bar 1 and the sleeve joint 2.

[0034] Example 3:

[0035] See attached document Figure 4-5 Unlike Embodiment 1, the anti-loosening structure also includes a reinforcing threaded pin 24 disposed in the internal threaded hole 22 and a reinforcing internal threaded hole 15 opened on the threaded pin 12. The diameter of the reinforcing threaded pin 24 is adapted to the diameter of the reinforcing internal threaded hole 15, and the inner wall of the reinforcing internal threaded hole 15 can be threadedly connected to the reinforcing threaded pin 24. The reinforcing threaded pin 24 and the sleeve joint 2 are integrally formed. At this time, after the sleeve joint 2 is threadedly connected to the threaded pin 12 through the internal threaded hole 22, the inner wall of the reinforcing internal threaded hole 15 is also threadedly connected to the reinforcing threaded pin 24, thereby strengthening the threaded connection contact surface and improving the connection strength.

[0036] In practical use, the sleeve joint 2 is threadedly connected to the threaded pin 12 through the internal threaded hole 22, thereby realizing the connection between the sleeve joint 2 and the reinforcing bar 1; the first ring 11 and the second ring 21 are aligned, and then the first ring 11 and the second ring 21 are fixed together with bolts, thereby restricting the relative rotation between the reinforcing bar 1 and the sleeve joint 2; at the same time, the inner wall of the reinforced internal threaded hole 15 is also threadedly connected to the reinforced threaded pin 24, thereby strengthening the threaded connection contact surface and improving the connection strength.

[0037] Example 4:

[0038] See attached document Figure 6 Unlike embodiment 2, the anti-loosening structure also includes a reinforcing threaded pin 24 provided in the internal threaded hole 22 and a reinforcing internal threaded hole 15 opened on the threaded pin 12. The diameter of the reinforcing threaded pin 24 is adapted to the diameter of the reinforcing internal threaded hole 15, and the inner wall of the reinforcing internal threaded hole 15 can be threadedly connected to the reinforcing threaded pin 24. The reinforcing threaded pin 24 and the sleeve joint 2 are integrally formed.

[0039] In practical use, the sleeve joint 2 is threadedly connected to the threaded pin 12 through the internal threaded hole 22, thereby realizing the connection between the sleeve joint 2 and the reinforcing bar 1; the limiting block 13 is aligned with the limiting through hole 23, and under the elastic force of the spring 16, the limiting block 13 passes through the limiting through hole 23, thereby restricting the relative rotation between the reinforcing bar 1 and the sleeve joint 2; and the inner wall of the reinforced internal threaded hole 15 can be threadedly connected to the reinforced threaded pin 24, and the reinforced threaded pin 24 and the sleeve joint 2 are integrally formed structures.

[0040] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A mechanical sleeve joint suitable for high-strength reinforcing bars, comprising a sleeve joint (2) and a reinforcing bar (1), wherein the sleeve joint (2) and the reinforcing bar (1) are threadedly connected, characterized in that: Both ends of the sleeve joint (2) are provided with internal threaded holes (22), and both ends of the reinforcing bar (1) are provided with threaded pins (12). The diameter of the internal threaded hole (22) is matched with the diameter of the threaded pin (12), and the inner wall of the internal threaded hole (22) can be threadedly connected with the threaded pin (12). The sleeve joint (2) and the reinforcing bar (1) are provided with an anti-loosening structure. The anti-loosening structure includes a first ring (11) on the reinforcing bar (1) and a second ring (21) on the sleeve joint (2). Both the first ring (11) and the second ring (21) are provided with internal threaded holes. When the sleeve joint (2) and the reinforcing bar (1) are in a tightly connected state, the internal threaded holes on the first ring (11) and the second ring (21) are aligned.

2. The mechanical sleeve joint for high-strength steel bars according to claim 1, characterized in that, The anti-loosening structure includes a limiting through hole (23) opened on the side wall of the internal threaded hole (22), and a groove (14) opened on the threaded pin (12). A spring (16) is welded on the bottom wall of the groove (14), and a limiting block (13) is welded to the other end of the spring (16). The inner wall of the groove (14) and the limiting block (13) are slidably connected.

3. A mechanical sleeve joint suitable for high-strength steel bars according to claim 2, characterized in that, The outer diameter of the limiting block (13) is matched with the inner diameter of the limiting through hole (23). When the threaded pin (12) is inserted into the internal threaded hole (22) to tightly connect the reinforcing bar (1) and the sleeve joint (2), the limiting block (13) is inserted into the limiting through hole (23).

4. A mechanical sleeve joint suitable for high-strength steel bars according to claim 1, characterized in that, The anti-loosening structure also includes a reinforcing threaded pin (24) provided in the internal threaded hole (22) and a reinforcing internal threaded hole (15) opened on the threaded pin (12). The diameter of the reinforcing threaded pin (24) is adapted to the diameter of the reinforcing internal threaded hole (15), and the inner wall of the reinforcing internal threaded hole (15) is threadedly connected to the reinforcing threaded pin (24). The reinforcing threaded pin (24) and the sleeve joint (2) are integrally formed.

5. A mechanical sleeve joint suitable for high-strength steel bars according to claim 2, characterized in that, The anti-loosening structure also includes a reinforcing threaded pin (24) provided in the internal threaded hole (22) and a reinforcing internal threaded hole (15) opened on the threaded pin (12). The diameter of the reinforcing threaded pin (24) is adapted to the diameter of the reinforcing internal threaded hole (15), and the inner wall of the reinforcing internal threaded hole (15) can be threadedly connected to the reinforcing threaded pin (24). The reinforcing threaded pin (24) and the sleeve joint (2) are integrally formed.

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