Rack meshing self-locking sleeve

Abstract

The utility model provides a rack meshing self-locking sleeve. The rack meshing self-locking sleeve comprises a sheet-shaped fixing frame and two taper sleeves. A plurality of clamping holes are uniformly formed in the fixing frame around the central axis of the fixing frame at intervals, an extrusion rack is clamped in each clamping hole in the direction parallel to the central axis, and the extrusion racks are symmetrically arranged relative to the fixing frame; the two ends, symmetrical relative to the fixing frame, of the extrusion rack are both long-strip-shaped fan-shaped blocks, and the multiple fan-shaped blocks located on the two sides of the fixing frame respectively form two conical cylindrical structures. An inner cavity of the conical cylindrical structure is cylindrical, the outer portion of the conical cylindrical structure is a self-locking conical face, and the diameter of the end, close to the fixing frame, of the self-locking conical face is large. And the two taper sleeves are respectively provided with self-locking taper holes matched with the two self-locking taper surfaces. The reinforcing steel bar connecting efficiency can be greatly improved, and the construction period is shortened.

Description

Technical Field

[0001] This utility model relates to the field of steel bar connection technology, specifically to a rack and pinion self-locking sleeve. Background Technology

[0002] In the field of construction engineering, traditional rebar connection methods typically require threading the ends of the rebars. This threading process demands specialized equipment and skilled workers, which is not only time-consuming but also requires workers to possess a high level of expertise. Currently, with the construction industry moving towards modularization, intelligence, and convenience, higher demands are being placed on rebar connection processes. Traditional multi-step rebar connection methods result in low construction efficiency and high costs, making it difficult to meet the rapid progress requirements of modern construction projects. Therefore, there is an urgent need for a rebar connection solution that is simple in process and highly efficient in connection, in order to improve the overall construction progress and economic benefits of construction projects. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a rack and pinion self-locking sleeve to improve the efficiency of steel bar connection and shorten the construction cycle, in order to address the shortcomings of the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention includes:

[0005] A rack-and-pinion self-locking sleeve includes a plate-shaped fixing frame and two conical sleeves. The fixing frame has multiple locking holes evenly spaced around its central axis. Each locking hole holds a pressing rack in a direction parallel to the central axis, and the pressing rack is symmetrically arranged relative to the fixing frame. The two ends of the pressing rack, symmetrical to the fixing frame, are elongated fan-shaped blocks, and these fan-shaped blocks on both sides of the fixing frame form two conical cylindrical structures. The inner cavity of the conical cylindrical structure is cylindrical, and the outer surface of the conical cylindrical structure is a self-locking conical surface, with a larger diameter at the end of the self-locking conical surface closer to the fixing frame. The two conical sleeves each have a self-locking conical hole adapted to these two self-locking conical surfaces.

[0006] Furthermore, the mounting bracket is made of polyurethane.

[0007] Furthermore, the fixing frame has a ring-shaped structure.

[0008] Furthermore, the diameter of the central circular hole of the fixing frame is smaller than the bottom diameter of the reinforcing bar to be connected.

[0009] Furthermore, the length of the sector block is 2-4 times the bottom diameter of the reinforcing bars to be connected.

[0010] Furthermore, a gap is left between two adjacent sector blocks located on the same side of the fixing frame.

[0011] Furthermore, a transition arc is provided at the end of the sector block away from the fixing frame.

[0012] Furthermore, the inner surface of the sector block is provided with multiple annular teeth.

[0013] Furthermore, an arc-shaped groove is provided on the inner or outer side of the center of the extrusion rack, and the corresponding end of the corresponding snap-fit ​​hole can be engaged in the arc-shaped groove.

[0014] Furthermore, the outer surface of the conical sleeve has a regular polygonal structure.

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

[0016] This invention combines a fixing frame, a pressing rack, and a conical sleeve. The fixing frame has multiple locking holes and is paired with pressing racks symmetrically arranged on either side of the fixing frame, forming two conical cylindrical structures. These, combined with the matching self-locking conical holes in the conical sleeves, enable threadless connection of reinforcing bars. Compared to traditional threaded connections, this eliminates the need for threading, significantly improving construction efficiency and reducing costs. Furthermore, the simple structure and easy overall connection operation significantly shorten the rebar connection time and accelerate project progress. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the thread-free sleeve of this utility model;

[0018] Figure 2 This is a schematic diagram of the cone sleeve of this utility model;

[0019] Figure 3 This is a schematic diagram of the extrusion rack of this utility model;

[0020] Figure 4 This is a structural schematic diagram of the fixing frame of this utility model;

[0021] Figure 5 This is a schematic diagram of the thread-free sleeve of this utility model before use;

[0022] Figure 6 This is a schematic diagram of the thread-free sleeve of this utility model after use;

[0023] In the diagram: 1. Conical sleeve, 2. Extrusion rack, 21. Arc groove, 3. Fixing bracket, 31. Snap-fit ​​hole. Detailed Implementation

[0024] To facilitate understanding of this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. Those skilled in the art should understand that the described embodiments are merely illustrative and should not be construed as limiting the scope of this utility model.

[0025] like Figure 1-4 As shown, this utility model provides a rack-and-pinion self-locking sleeve, including a plate-shaped fixing frame 3 and two conical sleeves 1; the fixing frame 3 has a plurality of fan-shaped snap-fit ​​holes 31 evenly spaced around its central axis, and each snap-fit ​​hole 31 has a pressing rack 2 snapped in a direction parallel to the central axis, and the pressing rack 2 is symmetrically arranged with respect to the fixing frame 3; the two ends of the pressing rack 2 symmetrical with respect to the fixing frame 3 are both long strip-shaped fan-shaped blocks, and the plurality of fan-shaped blocks located on both sides of the fixing frame 3 form two conical cylindrical structures; the inner cavity of the conical cylindrical structure is cylindrical, and the outer surface of the conical cylindrical structure is a self-locking conical surface, and the diameter of the self-locking conical surface is larger at the end closer to the fixing frame 3; the two conical sleeves 1 each have a self-locking conical hole adapted to the two self-locking conical surfaces.

[0026] The fixing frame 3 is injection molded from polyurethane, which has a certain degree of elasticity. In the initial state, it can stably support and fix the extrusion rack 2, ensuring the integrity of the sleeve structure. During the connection of the reinforcing bars, it can also deform as the extrusion rack 2 is subjected to pressure and movement, so that the extrusion rack 2 can grip the reinforcing bars.

[0027] like Figure 4 As shown, the fixing bracket 3 is a circular structure. Furthermore, the diameter of the central circular hole of the fixing bracket 3 is smaller than the bottom diameter of the reinforcing bar to be connected. This ensures that when the end of the reinforcing bar is inserted into the conical cylindrical structure, it will generate a certain amount of resistance against one side of the fixing bracket 3, thus ensuring that the reinforcing bar can be accurately inserted into place.

[0028] The length of the sector block is 2-4 times the bottom diameter of the reinforcing bar to be connected. The sector block is in direct contact with the reinforcing bar and provides interlocking force. A sector block of appropriate length can ensure full interlocking with the transverse and longitudinal ribs of the reinforcing bar while considering material costs, thus achieving a reliable connection between the reinforcing bar and the sleeve.

[0029] A gap is left between two adjacent sector blocks on the same side of the fixing frame 3. This gap allows the adjacent sector blocks to move and deform relative to each other during the extrusion process, better adapting to the shape and size deviations of the reinforcing bars and various stresses generated during the connection process. This ensures that each sector block can better contact the reinforcing bar, achieving a more reliable engagement and improving the strength and reliability of the connection structure. Furthermore, the existence of the gap also makes it easier to install the extrusion rack 2 and facilitates the insertion and adjustment of the reinforcing bar to the appropriate position.

[0030] A transition arc is provided at the end of the sector block away from the fixing frame 3. The transition arc serves as a guide, making the contact between the conical sleeve 1 and the sector block smoother, reducing friction and collision during the extrusion process, and allowing the conical sleeve 1 to be smoothly fitted onto the conical cylindrical structure. The conical sleeve 1 has a regular polygonal shape.

[0031] The inner surface of the sector block is provided with multiple annular teeth. The annular teeth can more easily embed into the transverse and longitudinal ribs of the reinforcing bars, making the connection between the reinforcing bars and the sector block more secure and improving the reliability of the connection.

[0032] An arc-shaped groove 21 is provided on the inner or outer side of the center of the compression rack 2. The arc-shaped groove 21 also has rounded corners on both sides, allowing the corresponding end of the corresponding snap-fit ​​hole 31 to engage in the arc-shaped groove 21. For example... Figure 1 In the embodiment shown, an arc-shaped groove 21 is provided on the outer side of the center of the extrusion rack 2, such as... Figure 3 In the illustrated embodiment, an arc-shaped groove 21 is provided on the inner side of the center of the extrusion rack 2. When the extrusion rack 2 is assembled with the fixing frame 3, the cooperation between the arc-shaped groove 21 and the snap-fit ​​hole can provide accurate positioning for the installation of the extrusion rack 2, facilitate installation, and make the connection between the extrusion rack 2 and the fixing frame 3 tighter and more stable, while also reducing local stress.

[0033] like Figure 5 , 6 As shown, in use, this utility model first assembles the compression rack 2 and the fixing frame 3 together, forming two symmetrically distributed conical cylindrical structures on the left and right sides of the fixing frame 3. Then, the ends of the two reinforcing bars are inserted into the two conical cylindrical structures until they both contact the fixing frame 3. Finally, a compression tool is used to press the two conical sleeves 1 onto the two conical cylindrical structures, thereby destroying the sheet-like fixing frame 3. Finally, the compression rack 3 clamps the transverse and longitudinal ribs of the reinforcing bars, achieving a threadless connection of the reinforcing bars. The self-locking fit between the conical sleeves 1 and the conical cylindrical structures ensures the stability of the reinforcing bar connection from multiple aspects, meeting the requirements of building structures for the strength and stability of the reinforcing bar connection.

[0034] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rack and pinion self-locking sleeve characterized in that, It includes a plate-shaped fixing frame (3) and two conical sleeves (1); the fixing frame (3) is provided with a plurality of snap-fit ​​holes (31) evenly spaced around its central axis, and each snap-fit ​​hole (31) is fitted with a pressing rack (2) in a direction parallel to the central axis, and the pressing rack (2) is symmetrically arranged with respect to the fixing frame (3); the two ends of the pressing rack (2) symmetrical with respect to the fixing frame (3) are both long strip-shaped fan-shaped blocks, and the plurality of fan-shaped blocks located on both sides of the fixing frame (3) form two conical cylindrical structures; the inner cavity of the conical cylindrical structure is cylindrical, and the outer surface of the conical cylindrical structure is a self-locking conical surface, and the diameter of the self-locking conical surface is larger at the end near the fixing frame (3); the two conical sleeves (1) respectively have self-locking conical holes adapted to the two self-locking conical surfaces.

2. A rack and pinion self-locking sleeve according to claim 1, wherein, The fixing frame (3) is made of polyurethane.

3. A rack and pinion self-locking sleeve according to claim 1, wherein, The fixing frame (3) has a circular ring structure.

4. A rack and pinion self-locking sleeve according to claim 3, wherein, The diameter of the central circular hole of the fixing frame (3) is smaller than the bottom diameter of the reinforcing bar to be connected.

5. A rack and pinion self-locking sleeve according to claim 1, wherein, The length of the sector block is 2-4 times the bottom diameter of the reinforcing bars to be connected.

6. A rack and pinion self-locking sleeve according to claim 1, wherein, A gap is left between two adjacent sector blocks located on the same side of the fixing frame (3).

7. A rack and pinion self-locking sleeve according to claim 1, wherein, A transition arc is provided at the end of the sector block away from the fixed frame (3).

8. A rack-and-pinion self-locking sleeve according to claim 1, characterized in that, The inner surface of the sector block is provided with multiple annular teeth.

9. A rack and pinion self-locking sleeve according to claim 1, wherein, An arc-shaped groove (21) is provided on the inner or outer side of the center of the extrusion rack (2), and the corresponding end of the corresponding snap-fit ​​hole (31) can be snapped into the arc-shaped groove (21).

10. A rack and pinion self-locking sleeve according to claim 1, wherein, The outer surface of the cone sleeve (1) is a regular polygonal structure.

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