Reinforcing steel bar self-locking connecting device

Abstract

The utility model relates to a reinforcing steel bar self-locking connecting device which comprises a connecting cylinder, anti-falling assemblies are arranged at the two ends of the connecting cylinder, a self-locking assembly is arranged in the connecting cylinder, the self-locking assembly comprises a plurality of arc-shaped pieces and a plurality of elastic silica gel, and the arc-shaped pieces and the elastic silica gel are arranged in a staggered mode and connected to form a self-locking lantern ring. And a plurality of springs are fixedly connected between the outer wall surface of the self-locking lantern ring and the inner wall surface of the connecting cylinder, so that self-locking between the steel bars can be realized, the stability of steel bar connection is enhanced, the production efficiency is improved, and the purpose of effectively ensuring the steel bar connection quality is achieved.

Description

Technical Field

[0001] The utility model relates to a steel bar self-locking connection device, belonging to the technical field of steel bar connection. Background Art

[0002] The steel bar connector is a device used to connect large steel bars. It has the characteristics of energy saving and is not limited by the composition and type of steel bars. The existing steel bar connections all use threaded sleeves to thread two steel bars. When using this connection method, we need to tighten the threaded sleeve to fix the steel bar, which is more troublesome to operate. In addition, the existing steel bar connector does not have a self-locking function and is easy to loosen. To this end, we propose a steel bar self-locking connection device. Utility Model Content

[0003] In order to solve the above problems existing in the prior art, the utility model provides a self-locking connection device for steel bars, which can achieve self-locking between steel bars, enhance the stability of steel bar connection and improve production efficiency, effectively ensuring the quality of steel bar connection.

[0004] The technical solution of the utility model is as follows:

[0005] A self-locking connection device for steel bars comprises a connection tube, both ends of which are provided with anti-dropping components, a self-locking component is provided inside the connection tube, the self-locking component comprises a plurality of arcuate sheets and a plurality of elastic silicones, the arcuate sheets and the plurality of elastic silicones are staggered and connected to form a self-locking ring, and a plurality of springs are fixedly connected between the outer wall surface of the self-locking ring and the inner wall surface of the connection tube.

[0006] Among them, the anti-slip assembly includes an anti-slip sleeve, and the anti-slip sleeve is provided with partition openings at three intervals away from the outer side of the connecting tube. The three partition openings divide the anti-slip sleeve into three anti-slip sheets, and the inner wall surfaces of the three anti-slip sheets are provided with inverted teeth, and the outer walls of the three anti-slip sheets are provided with inwardly recessed cutting openings; the anti-slip assembly also includes a nut, and the inner wall of the nut is provided with a protrusion that fits the cutting opening; when the protrusion is misaligned with the cutting opening, the anti-slip sheet is used to clamp the steel bar through the protrusion of the nut; when the protrusion fits with the cutting opening, a gap is left between the anti-slip sheet and the steel bar.

[0007] Among them, the surface of the anti-slip sheet is provided with a plurality of through holes, the surface of the nut is provided with connecting holes that fit the through holes, and the anti-slip assembly also includes a pin, which is inserted into the through holes and the connecting holes to fix the nut and the anti-slip sheet.

[0008] Wherein, the inner wall surface of the self-locking ring is provided with a plurality of anti-slip protrusions.

[0009] Wherein, guide cone surfaces are arranged at the tops of both ends of the self-locking collar, tilted toward the center.

[0010] The utility model has the following beneficial effects:

[0011] The utility model utilizes self-locking components to achieve lossless connection between the steel bar and the connecting tube. There is no need to strip the ribs or roll the threads before the steel bar is installed, which causes zero damage to the steel bar and saves labor hours. At the same time, the anti-slip components are used to further enhance the stability of the steel bar connection and improve production efficiency, effectively ensuring the quality of the steel bar connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a half-section view of the connecting tube of the utility model.

[0014] The reference numerals in the figure represent:

[0015] 1. Connecting tube; 2. Arc-shaped sheet; 3. Elastic silicone; 4. Spring; 5. Anti-drop sleeve; 6. Nut; 51. Partition opening; 52. Anti-drop sheet; 53. Cutting opening; 54. Through hole; 61. Connecting hole. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] See also Figure 1 to Figure 2 , the utility model provides a technical solution:

[0018] A self-locking connection device for steel bars comprises a connection tube 1. Both ends of the connection tube 1 are provided with anti-dropping components. A self-locking component is provided inside the connection tube 1. The self-locking component comprises a plurality of arcuate sheets 2 and a plurality of elastic silicones 3. The arcuate sheets 2 and the plurality of elastic silicones 3 are staggered and connected to form a self-locking ring. A plurality of springs 4 are fixedly connected between the outer wall surface of the self-locking ring and the inner wall surface of the connection tube 1.

[0019] The anti-slip assembly includes an anti-slip sleeve 5, which is provided with partition openings 51 at three intervals away from the outer side of the connecting tube 1. The three partition openings 51 divide the anti-slip sleeve 5 into three anti-slip sheets 52. The inner wall surfaces of the three anti-slip sheets 52 are provided with inverted teeth, and the outer walls of the three anti-slip sheets 52 are all provided with inwardly recessed cutting openings 53; the anti-slip assembly also includes a nut 6, and the inner wall of the nut 6 is provided with a protrusion that fits the cutting opening 53; when the protrusion is misaligned with the cutting opening 53, the anti-slip sheet 52 is used to clamp the steel bar through the protrusion of the nut 6; when the protrusion fits the cutting opening 53, a gap is left between the anti-slip sheet 52 and the steel bar; further, by rotating the nut 6, the protrusion and the cutting opening 53 of the nut 6 are misaligned, and the anti-slip sheet 52 is subjected to the downward pressure of the protrusion to the surface of the steel bar, and when the steel bar is subjected to outward axial tension, the inverted teeth on the inner surfaces of the three anti-slip sheets 52 can firmly grasp the steel bar.

[0020] The surface of the anti-slip sheet 52 is provided with a plurality of through holes 54, and the surface of the nut 6 is provided with connecting holes 61 that fit into the through holes 54. The anti-slip assembly also includes a latch, which is inserted into the through holes 54 and the connecting holes 61 to prevent the nut 6 and the anti-slip sheet 52 from slipping off.

[0021] The inner wall surface of the self-locking collar is provided with a plurality of anti-slip protrusions, which can further strengthen the friction between the self-locking collar and the steel bar to increase the stability after connection.

[0022] The tops of both ends of the self-locking collar are inclined toward the center with guide cones; the purpose of the guide cones is that after one end of the steel bar is pressed against the guide cone, the steel bar can slide into the self-locking collar more easily through the guiding effect of the guide cone.

[0023] The working principle of the above-mentioned steel bar self-locking connection device is as follows:

[0024] One end of the steel bar is pressed against the guide cone surface, and then pushed inward. The self-locking collar is subjected to pressure toward the connecting tube 1. Under the action of the spring 4 and the elastic silicone 3, the self-locking collar opens outward to make way, and the steel bar can be smoothly inserted into the connecting tube 1. After the steel bar is inserted into place, the self-locking collar is automatically tightened by the elastic thrust of the spring 4 toward the center and the retraction force of the elastic silicone 3, forming a strong bite on the steel bar; then by rotating the nut 6, the protrusion of the nut 6 and the cutting edge 53 are misaligned, and the anti-slip sheet 52 is subjected to the downward pressure of the protrusion to press against the surface of the steel bar. At the same time, a pin is inserted into the connecting hole 61 and the through hole 54 to prevent slipping. When the steel bar is subjected to the outward axial tension, the inverted teeth on the inner surface of the three anti-slip sheets 52 can firmly grasp the steel bar.

[0025] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A self-locking connection device for steel bars, Features: The invention comprises a connecting tube (1), both ends of which are provided with anti-dropping components, a self-locking component is provided inside the connecting tube (1), the self-locking component comprises a plurality of arc-shaped sheets (2) and a plurality of elastic silica gels (3), the arc-shaped sheets (2) and the plurality of elastic silica gels (3) are staggered and connected to form a self-locking ring, and a plurality of springs (4) are fixedly connected between the outer wall surface of the self-locking ring and the inner wall surface of the connecting tube (1).

2. A self-locking steel bar connection device as claimed in claim 1, Features: The anti-slip assembly comprises an anti-slip sleeve (5), wherein the anti-slip sleeve (5) is provided with partition openings (51) at intervals of three times away from the outer side of the connecting tube (1), and the three partition openings (51) divide the anti-slip sleeve (5) into three anti-slip sheets (52), wherein the inner wall surfaces of the three anti-slip sheets (52) are provided with inverted teeth, and the outer walls of the three anti-slip sheets (52) are all provided with inwardly recessed cutting openings (53); the anti-slip assembly also comprises a nut (6), wherein the inner wall of the nut (6) is provided with a protrusion that fits the cutting opening (53); when the protrusion is misaligned with the cutting opening (53), the anti-slip sheet (52) is used to clamp the steel bar through the protrusion of the nut (6); when the protrusion fits with the cutting opening (53), a gap is left between the anti-slip sheet (52) and the steel bar.

3. A self-locking steel bar connection device as claimed in claim 2, Features: The surface of the anti-slip sheet (52) is provided with a plurality of through holes (54), the surface of the nut (6) is provided with connecting holes (61) that fit the through holes (54), and the anti-slip assembly further comprises a latch, which is inserted into the through holes (54) and the connecting holes (61) to fix the nut (6) and the anti-slip sheet (52).

4. A self-locking steel bar connection device as claimed in claim 3, Features: The inner wall surface of the self-locking collar is provided with a plurality of anti-slip protrusions.

5. A self-locking steel bar connection device as claimed in claim 4, Features: The tops of both ends of the self-locking collar are inclined toward the center and are provided with guiding cone surfaces.

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