High-strength steel bar straight thread connection structure

Abstract

The utility model discloses a high-strength steel bar straight thread connecting structure which comprises a connecting sleeve and high-strength steel bar bodies located on the two sides of the connecting sleeve, two connecting cavities are formed in the center of the interior of the connecting sleeve through a partition plate, and the two high-strength steel bar bodies are connected into the two connecting cavities respectively. The locking structure is arranged between the rotating sleeve and the high-strength steel bar main body, the rotating sleeve is rotated to move, the relative position of the rotating sleeve on the connecting sleeve is adjusted, the position of the pushing groove is adjusted, and the high-strength steel bar main body can be pushed to the pushing groove. And an inclined surface matched with the pushing block in a sliding manner is arranged between the pushing block and the pushing groove, so that the pushing block can be driven to move, the pushing block drives the clamping block to move together, the high-strength steel bar main body and the connecting sleeve are stably connected, the connecting stability is ensured, and the problems of loosening and separation caused by long-time use are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of high-strength steel bars, in particular to a high-strength steel bar straight thread connection structure. Background Art

[0002] High-strength steel bars refer to steel used for reinforced concrete and prestressed reinforced concrete. Their cross-section is circular, and sometimes square with rounded corners. They include plain round steel bars, ribbed steel bars, and twisted steel bars. When connecting high-strength steel bars, sleeves are usually used to thread the two steel bars and tighten them to secure them.

[0003] After searching, Chinese patent announcement number: CN220539026U discloses a high-strength steel bar straight thread connection structure, including a threaded sleeve and a limit block, the threaded sleeve is installed with a limit block inside, the side wall of the limit block is installed with a shock-absorbing spring, the inner ring of the shock-absorbing spring is installed with a damping support rod, the end of the shock-absorbing spring is installed with a rubber plate, the left side of the threaded sleeve is installed with a first high-strength steel bar, the left side of the threaded sleeve is installed with a second high-strength steel bar, the side wall of the threaded sleeve is installed with a connecting rod, the end of the connecting rod is installed with a sheath, the inside of the sheath is installed with a threaded bolt, the end of the threaded bolt is installed with a fixing ring, the upper end face of the fixing ring is installed with a telescopic sleeve, and the inner surface of the fixing ring is installed with a gear rack.

[0004] The above technical solution clamps and fixes the first high-strength steel bar by adjusting the position of the fixing ring, and the gear rack is used to increase the friction when fixing the first high-strength steel bar, thereby improving the connection stability. However, the connection stability is not ideal by simply clamping the fixing ring and the gear rack to increase the friction. The connection between the high-strength steel bar and the sleeve is still prone to loosening after long-term use. Therefore, it is urgent to design a high-strength steel bar straight thread connection structure to improve the above problem. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the purpose of the present utility model is to provide a high-strength steel bar straight thread connection structure, which aims to solve the problem that the existing technology only increases the friction force by clamping the fixing ring and the gear frame, and its connection stability is not ideal. The connection between the high-strength steel bar and the sleeve is still prone to loosening after long-term use.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The cam is threaded with a threaded hole at one end and the other end of the cam is threaded with a bolt, and the bolt has a round shank to move relative to the bolt.

[0008] Preferably, there are multiple limiting members at the upper limit groove of each high-strength steel bar body, each of which is arranged at equal intervals along the circumferential direction. The limiting members include a pushing block and a locking block fixedly connected to one end of the pushing block. The pushing block is placed in the accommodating groove. A through groove for the locking block to pass through is provided between the accommodating groove and the inner wall of the connecting sleeve, and the locking block can be locked into the limiting groove.

[0009] Preferably, the thickness of the locking block is smaller than the thickness of the pushing block, and an elastic member is installed between one end of the pushing block close to the locking block and the inner wall of the accommodating groove.

[0010] Preferably, a second external thread is provided on the outer wall of the connecting sleeve, a second internal thread is provided on the inner wall of the rotating sleeve, and the rotating sleeve and the connecting sleeve are threadedly connected via the second internal thread and the second external thread.

[0011] Preferably, the locking structure also includes a pushing groove annularly opened on the inside of the rotating sleeve, and the pushing groove is provided with two positions corresponding to the upper limit grooves of the two high-strength steel bar bodies. The pushing block is partially placed in the pushing groove, and the end of the pushing block in contact with the pushing groove is provided with a matching sliding inclined surface.

[0012] Preferably, a tool clamping ring is fixedly sleeved on the outer wall of the rotating sleeve.

[0013] Preferably, a retaining ring is fixedly sleeved on the outer wall of one end of the rotating sleeve.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model provides a locking structure, and by rotating the rotating sleeve, the relative position of the rotating sleeve on the connecting sleeve and the position of the pushing groove are adjusted. A matching sliding inclined surface is provided between the pushing block and the pushing groove, thereby driving the pushing block to move, and the pushing block moves with the positioning block, which is used to firmly connect the high-strength steel bar body and the connecting sleeve, ensuring the stability of the connection and avoiding the problem of loosening or detachment caused by long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the high-strength steel bar straight thread connection structure;

[0017] Figure 2 This is a schematic diagram of the split structure of the connecting sleeve and the high-strength steel bar body;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the connecting sleeve and the rotating sleeve;

[0019] Figure 4 Schematic diagram of the rotating sleeve structure;

[0020] Figure 5 Schematic diagram of the connecting sleeve structure;

[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of the connection between the high-strength steel bar body, the connecting sleeve and the rotating sleeve;

[0022] Figure 7 for Figure 6 A schematic diagram of the enlarged structure of area A;

[0023] Figure 8 Schematic diagram of the limiter structure.

[0024] In the figure: 1. High-strength steel bar body; 101. First external thread; 102. Limiting groove; 2. Connecting sleeve; 201. First internal thread; 202. Second external thread; 203. Accommodating groove; 204. Retaining ring; 3. Rotating sleeve; 301. Pushing groove; 302. Tool retaining ring; 4. Limiting member; 401. Pushing block; 402. Positioning block; 5. Elastic member. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Example:

[0027] See also Figures 1-8 This embodiment provides a high-strength steel bar straight thread connection structure, including a connecting sleeve 2 and a high-strength steel bar main body 1 located on both sides of the connecting sleeve 2. Two connecting cavities are formed by a partition at the center of the connecting sleeve 2. The two high-strength steel bar main bodies 1 are respectively connected to the two connecting cavities. The outer sides of the two high-strength steel bar main bodies 1 close to the connecting sleeve 2 are provided with a first external thread 101, and the inner walls of the two connecting cavities are provided with a first internal thread 201. One end of the high-strength steel bar main body 1 is placed in the connecting sleeve 2 and is threadedly connected by the first external thread 101 and the first internal thread 201. The setting of the connecting sleeve 2 facilitates the high-strength steel bar main body 1 at both ends to be connected as a whole with the connecting sleeve 2. This is the existing technology and will not be described in detail here.

[0028] In this embodiment, a rotating sleeve 3 is sleeved on the outer side of the connecting sleeve 2, and a locking structure is provided between the rotating sleeve 3, the connecting sleeve 2 and the high-strength steel bar main body 1. The locking structure includes a ring-shaped limiting groove 102 on the outer wall of the high-strength steel bar main body 1 near the first external thread 101 and a limiting member 4 located at the upper limiting groove 102 of the two high-strength steel bar main bodies 1. A receiving groove 203 for accommodating the limiting member 4 is provided on the outer wall of the connecting sleeve 2. The rotating sleeve 3 is used to push the limiting member 4 into the limiting groove 102. After the high-strength steel bar main body 1 is connected to the connecting cavity of the connecting sleeve 2, the limiting member 4 is radially moved toward the inner wall of the connecting sleeve 2 by moving the rotating sleeve 3, so that the limiting member 4 is stuck in the limiting groove 102, which is used to firmly connect the high-strength steel bar main body 1 and the connecting sleeve 2, ensure the stability of the connection, and avoid loosening or detachment problems caused by long-term use.

[0029] In this embodiment, a plurality of limiting members 4 are arranged at equal intervals in the circumferential direction at the upper limit groove 102 of each high-strength steel bar main body 1. The limiting member 4 includes a pushing block 401 and a locking block 402 fixedly connected to one end of the pushing block 401. The pushing block 401 is placed in the accommodating groove 203. A through groove for the locking block 402 to pass through is opened between the accommodating groove 203 and the inner wall of the connecting sleeve 2. The locking block 402 can be clamped into the limiting groove 102. The thickness of the locking block 402 is less than the thickness of the pushing block 401. The multiple limiting members 4 are used to limit and fix the high-strength steel bar main body 1 in multiple directions, greatly improving the connection stability. Through the design of the pushing block 401 and the locking block 402, the limiting member 4 is divided into two parts. The pushing block 401 can only move in the accommodating groove 203 to prevent the pushing block 401 from moving into the connecting sleeve 2, while the locking block 402 can pass through the through groove to be clamped into the limiting groove 102.

[0030] As an implementation method in this embodiment, the cross-sections of the limiting groove 102 and one end of the locking block 402 are both trapezoidal structures. The width of the limiting groove 102 gradually decreases from the outer wall of the high-strength steel bar body 1 toward its center. The locking block 402 is adapted to the shape of the limiting groove 102, so that when the locking block 402 is inserted into the limiting groove 102, the end of the locking block 402 with a smaller width will first be inserted into the end of the limiting groove 102 with a larger width. There is a certain amount of fault tolerance space, which helps the locking block 402 to be more smoothly inserted into the interior of the limiting groove 102.

[0031] In this embodiment, a second external thread 202 is provided on the outer wall of the connecting sleeve 2, and a second internal thread is provided on the inner wall of the rotating sleeve 3. The rotating sleeve 3 and the connecting sleeve 2 are threadedly connected by the second internal thread and the second external thread 202. The locking structure also includes a pushing groove 301 annularly opened on the interior of the rotating sleeve 3. The pushing groove 301 is provided with two corresponding upper limit grooves 102 of the two high-strength steel bar main bodies 1. The pushing block 401 is partially placed in the pushing groove 301. The end of the pushing block 401 in contact with the pushing groove 301 is provided with a matching sliding inclined surface. The rotating sleeve 3 and the connecting sleeve 2 are threadedly connected. In this way, the rotating sleeve 3 can move axially along the connecting sleeve 2, thereby adjusting the relative position of the rotating sleeve 3 on the connecting sleeve 2, adjusting the position of the pushing groove 301, and providing a matching sliding inclined surface between the pushing block 401 and the pushing groove 301, thereby driving the pushing block 401 to move, and the pushing block 401 moves together with the positioning block 402, thereby realizing the operation of clamping the positioning block 402 into the limiting groove 102, and operating the rotating sleeve 3 to rotate and displace, thereby driving the limiting members 4 at the two high-strength steel bar main bodies 1 to move synchronously, so as to clamp the two high-strength steel bar main bodies 1 together, with a simple structure, convenient operation and high practicality.

[0032] In this embodiment, an elastic part 5 is installed between one end of the pushing block 401 close to the locking block 402 and the inner wall of the accommodating groove 203. The elastic part 5 can be a rubber block, spring or other parts with elastic function. Through the setting of the elastic part 5, when the rotating sleeve 3 has not yet acted on the pushing block 401, the elastic part 5 pushes the pushing block 401 toward the connecting sleeve 2, so that the locking block 402 is placed in the through groove, avoiding the locking block 402 protruding from the connecting cavity of the connecting sleeve 2, causing obstruction to the connection of the high-strength steel bar body 1.

[0033] In this embodiment, a tool retaining ring 302 is fixedly sleeved on the outer wall of the rotating sleeve 3. The tool retaining ring 302 has a hexagonal structure. The tool retaining ring 302 is used to cooperate with a wrench tool to facilitate the rotation operation of the rotating sleeve 3. Of course, in other embodiments, the tool retaining ring 302 is only a form of expression, and the tool retaining ring 302 can also be other shapes or structures that are compatible with the wrench tool.

[0034] In this embodiment, a retaining ring 204 is fixedly sleeved on the outer wall of one end of the rotating sleeve 3. The retaining ring 204 is used to limit the moving distance of the rotating sleeve 3. When the rotating sleeve 3 moves to contact the retaining ring 204, it indicates that the limit member 4 has moved into place.

[0035] Working principle: When in use, one end of the high-strength steel bar body 1 is placed in the connecting sleeve 2 and is threadedly connected through the first external thread 101 and the first internal thread 201, and the two high-strength steel bar bodies 1 are connected to the two ends of the connecting sleeve 2. By rotating the rotating sleeve 3, the rotating sleeve 3 is moved axially along the connecting sleeve 2, and the relative position of the rotating sleeve 3 on the connecting sleeve 2 is adjusted. A matching sliding inclined surface is provided between the pushing block 401 and the pushing groove 301, so that the pushing block 401 can be driven to move, and the pushing block 401 moves with the positioning block 402, so that the positioning block 402 passes through the through groove and is stuck in the limiting groove 102, which is used to firmly connect the high-strength steel bar body 1 and the connecting sleeve 2, ensure the stability of the connection, and avoid loosening and detachment problems caused by long-term use.

[0036] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

Claims

1. A high-strength steel bar straight thread connection structure, comprising a connecting sleeve (2) and a high-strength steel bar body (1) located on both sides of the connecting sleeve (2), characterized in that: Two connection cavities are formed at the center of the connection sleeve (2) through a partition. The two high-strength steel bar bodies (1) are respectively connected to the two connection cavities. The outer sides of the two high-strength steel bar bodies (1) close to the connection sleeve (2) are provided with a first external thread (101). The inner walls of the two connection cavities are provided with a first internal thread (201). One end of the high-strength steel bar body (1) is placed in the connection sleeve (2) and is threadedly connected through the first external thread (101) and the first internal thread (201). The outer side of the connection sleeve (2) is sleeved. A rotating sleeve (3) is provided, and a locking structure is provided between the rotating sleeve (3), the connecting sleeve (2) and the high-strength steel bar body (1). The locking structure comprises a limiting groove (102) annularly provided on the outer wall of the high-strength steel bar body (1) near the first external thread (101) and a limiting member (4) located at the upper limiting grooves (102) of the two high-strength steel bar bodies (1). An accommodating groove (203) for accommodating the limiting member (4) is provided on the outer wall of the connecting sleeve (2), and the rotating sleeve (3) is used to push the limiting member (4) into the limiting groove (102).

2. A high-strength steel bar straight thread connection structure according to claim 1, characterized in that: A plurality of limiting members (4) are provided at equal intervals along the circumferential direction at the upper limit groove (102) of each high-strength steel bar body (1), the limiting members (4) comprising a pushing block (401) and a locking block (402) fixedly connected to one end of the pushing block (401), the pushing block (401) being placed in the receiving groove (203), a through groove for the locking block (402) to pass through being provided between the receiving groove (203) and the inner wall of the connecting sleeve (2), and the locking block (402) can be locked into the limiting groove (102).

3. A high-strength steel bar straight thread connection structure according to claim 2, characterized in that: The thickness of the positioning block (402) is smaller than that of the pushing block (401), and an elastic member (5) is installed between one end of the pushing block (401) close to the positioning block (402) and the inner wall of the receiving groove (203).

4. The high-strength steel bar straight thread connection structure according to claim 1, characterized in that: A second external thread (202) is provided on the outer wall of the connecting sleeve (2), and a second internal thread is provided on the inner wall of the rotating sleeve (3); the rotating sleeve (3) and the connecting sleeve (2) are threadedly connected via the second internal thread and the second external thread (202).

5. The high-strength steel bar straight thread connection structure according to claim 3, characterized in that: The locking structure further comprises a pushing groove (301) annularly provided on the interior of the rotating sleeve (3), wherein the pushing groove (301) is provided with two positions corresponding to the upper limit grooves (102) of the two high-strength steel bar bodies (1), and the pushing block (401) is partially placed in the pushing groove (301), and the end of the pushing block (401) in contact with the pushing groove (301) is provided with a matching sliding inclined surface.

6. A high-strength steel bar straight thread connection structure according to claim 5, characterized in that: A tool clamping ring (302) is fixedly sleeved on the outer wall of the rotating sleeve (3).

7. The high-strength steel bar straight thread connection structure according to claim 5, characterized in that: A retaining ring (204) is fixedly sleeved on the outer wall of one end of the rotating sleeve (3).

Images