Mechanical connection structure for reinforcing steel bars between constraint ends

Abstract

The utility model discloses a mechanical connecting structure for reinforcing steel bars between constraint ends, and relates to the technical field of reinforcing steel bar connecting structures, the outer side of one end of a connecting reinforcing steel bar on one side is in threaded connection with an upper nut sleeve, and the outer side of one end of a connecting reinforcing steel bar on the other side is in threaded connection with a lower nut sleeve; the upper nut sleeve is connected with the connecting reinforcing steel bar on one side, the lower nut sleeve is connected with the connecting reinforcing steel bar on the other side, the middle connector is connected through the connecting thread sleeve, the connector strength is high, the quality is reliable, the rotating directions of connecting thread taps of the reinforcing steel bars are the same, and the connecting thread taps of the reinforcing steel bars are connected through the connecting thread sleeve. Classification processing of workers is avoided, the labor intensity of workers is reduced, the construction progress is accelerated, the constraint end reinforcing steel bar is independently tightened with the upper nut sleeve and the lower nut sleeve, the middle reinforcing steel bar connector is connected through the threaded sleeve type split sleeve, when the reinforcing steel bar on one side is tightened, the reinforcing steel bar on the other side cannot rotate, and the performance is stable and reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to reinforcing bar connecting structure technical field, specifically is a kind of mechanical connecting structure between restraint end. BACKGROUND

[0002] Reinforcing bar mechanical connection is limited by reinforcing bar length and restraint end, and it is easy to cause the problem of tight connection, one end is tightened and the other end is buckled, not only the difficulty of on-site construction, but also prone to rework phenomenon, which brings great loss to enterprises, traditional construction method of reinforcing bar connection between restraint ends has radial extrusion connection method and rolling straight thread connection method, radial extrusion connection is that a steel sleeve is sleeved on the end of two ribbed steels, and a superhigh pressure hydraulic equipment is used to extrude the steel sleeve along the radial direction, under the action of extrusion force, the steel sleeve is plastically deformed and tightly combined with the reinforcing bar, and the two reinforcing bars are connected together, and the rolling straight thread connection technology is that the reinforcing bar end is rolled into straight thread by a straight thread rolling machine, and then the two reinforcing bars to be butt-jointed are connected together by a straight thread sleeve.

[0003] However, the radial extrusion connection method has the problems of heavy equipment, slow connection speed, and visible cracks in the sleeve after cold extrusion of reinforcing bar, which can cause insufficient tensile strength at the connection, and the rolling straight thread connection technology has the problems of large rolling tolerance of reinforcing bar itself, difficult quality control of thread processing, poor stress condition of rolling thread wheel and low working life. UTILITY MODEL CONTENT

[0004] The utility model provides a reinforcing bar mechanical connecting structure between restraint ends, which can effectively solve the problems of heavy equipment, slow connection speed, visible cracks in the sleeve after cold extrusion of reinforcing bar, insufficient tensile strength at the connection, large rolling tolerance of reinforcing bar itself, difficult quality control of thread processing, poor stress condition of rolling thread wheel and low working life of the radial extrusion connection method and the rolling straight thread connection technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a reinforcing bar mechanical connecting structure between restraint ends, comprising connecting reinforcing bars, opposite ends of the two connecting reinforcing bars are provided with connecting threads, a reinforcing sleeve is slidably connected to the connecting reinforcing bar near the connecting thread, an upper nut sleeve is connected to the outer side of one end of the connecting reinforcing bar on one side through threads, a lower nut sleeve is connected to the outer side of one end of the connecting reinforcing bar on the other side through threads, and the upper nut sleeve and the lower nut sleeve are connected through a connecting sleeve.

[0006] According to the above technical scheme, anti-skid lines are uniformly arranged on the outer side of the connecting sleeve.

[0007] According to the above technical scheme, the thread rotation directions of the connecting threads on the outer sides of one end of the two connecting reinforcing bars are the same.

[0008] According to the above technical scheme, one end of the two reinforcing sleeves is welded with connecting ears on both sides, one side of the connecting ear is provided with a connecting hole, and the other side of the connecting ear is welded with a connecting screw cylinder.

[0009] According to the above technical scheme, the upper nut sleeve and the lower nut sleeve are uniformly welded with bent connecting ears at one end, and the other end of the two reinforcing sleeves is uniformly provided with guide grooves.

[0010] According to the above technical scheme, the guide groove is provided with a trapezoidal opening at one end, and the bent connecting ear is embedded in the adjacent guide groove through the trapezoidal opening.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The reinforcing sleeve, upper nut sleeve, lower nut sleeve, connecting screw sleeve and anti-skid pattern are arranged, the upper nut sleeve is connected with one side connecting steel bar through connecting thread, the lower nut sleeve is connected with the other side connecting steel bar through connecting thread, and the middle joint is connected and fixed through the connecting screw sleeve, so that the joint strength is high, the quality is reliable, the rotating directions of the connecting threads of the steel bars are same, the workers are free from classification processing, the manual labor intensity is reduced, the construction progress is accelerated, the end steel bar is separately tightened with the upper nut sleeve and the lower nut sleeve, the middle steel bar joint adopts the screw sleeve type split sleeve connection, when one side steel bar is tightened, the other side steel bar will not rotate, the end of each steel bar wire is ensured to be tightly contacted with the bottom of the sleeve, the sleeve and the steel bar wire are combined tightly, the performance is stable and reliable, the two steel bars are connected without welding, there is no open flame operation on site, and all-weather construction can be realized.

[0013] 2. The bent connecting ear, guide groove, trapezoidal opening, connecting ear, connecting hole, connecting screw cylinder and connecting screw rod are arranged, the two reinforcing sleeves are clamped on the upper nut sleeve and the lower nut sleeve, the connection between the upper nut sleeve and the lower nut sleeve is more firm, the connection strength of the steel bars is increased, when the connecting screw rod is connected with the connecting screw cylinder, the two reinforcing sleeves are close to each other, under the limiting and guiding action of the guide groove, the bent connecting ear is bent along the guide groove, the connection between the reinforcing sleeve and the upper nut sleeve and the lower nut sleeve is more firm, the connection strength of the two side connecting steel bars is further improved, the wire processing equipment and the sleeve crimping machine used on site are ordinary equipment, the power is small, the power consumption is small, special power distribution is not needed, and resources are saved. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation of the utility model.

[0015] In the attached diagram:

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the installation structure of the reinforcing sleeve of this utility model;

[0018] Figure 3 This is a schematic diagram of the installation structure of the connecting screw sleeve of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the lower nut sleeve of this utility model;

[0020] Figure 5 This is a schematic diagram of the guide groove of this utility model;

[0021] The following are the labels in the diagram: 1. Connecting rebar; 2. Connecting thread; 3. Reinforcing sleeve; 4. Upper nut sleeve; 5. Lower nut sleeve; 6. Connecting thread sleeve; 7. Anti-slip texture; 8. Bending connecting lug; 9. Guide groove; 10. Trapezoidal opening; 11. Connecting lug; 12. Connecting hole; 13. Connecting screw barrel; 14. Connecting screw rod. Detailed Implementation

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0023] Example: Figures 1-5 As shown, this utility model provides a technical solution for a mechanical connection structure of steel bars between constrained ends, including connecting steel bars 1. Each of the two connecting steel bars 1 has a connecting thread 2 at one opposite end. The connecting threads 2 on the outer side of one end of the two connecting steel bars 1 rotate in the same direction, which unifies the thread ends of the steel bars, eliminating the need for workers to process them separately, reducing labor, and speeding up the construction progress. A reinforcing sleeve 3 is slidably sleeved on the connecting steel bar 1 near the connecting thread 2. An upper nut sleeve 4 is threadedly connected to the outer side of one end of the connecting steel bar 1 on one side, and a lower nut sleeve 5 is threadedly connected to the outer side of one end of the connecting steel bar 1 on the other side. The upper nut sleeve 4 and the lower nut sleeve 5 are connected by a connecting thread sleeve 6. Anti-slip textures 7 are evenly distributed on the outer side of the connecting thread sleeve 6. The anti-slip textures 7 can increase the frictional resistance between the worker and the connecting thread sleeve 6, making it easier for the worker to rotate the connecting thread sleeve 6 by hand.

[0024] Two reinforcing sleeves 3 are welded with connecting ears 11 on both sides of one end, one side of the connecting ear 11 is provided with a connecting hole 12, the other side of the connecting ear 11 is welded with a connecting screw cylinder 13, the connecting hole 12 and the adjacent connecting screw cylinder 13 are connected through the threaded connection of the connecting screw rod 14, the connecting screw rod 14 is connected with the connecting screw cylinder 13, the two reinforcing sleeves 3 clamp the upper nut sleeve 4 and the lower nut sleeve 5, so that the connection between the upper nut sleeve 4 and the lower nut sleeve 5 is more firm, the upper nut sleeve 4 and the lower nut sleeve 5 are uniformly welded with the bent connecting ears 8 at one end, the two reinforcing sleeves 3 are uniformly provided with guide grooves 9 at the other end, the guide grooves 9 are provided with trapezoidal openings 10 at one end, the trapezoidal openings 10 increase the inlet of the guide grooves 9, so that the bent connecting ears 8 are more easily inserted into the inside of the guide grooves 9, the bent connecting ears 8 are inserted into the adjacent guide grooves 9 through the trapezoidal openings 10, the bent connecting ears 8 are initially in a straight state, when the connecting screw rod 14 is connected with the connecting screw cylinder 13, the two reinforcing sleeves 3 are close to each other, at this time, the bent connecting ears 8 are inserted into the adjacent guide grooves 9 through the trapezoidal openings 10, under the limiting and guiding action of the guide grooves 9, the bent connecting ears 8 are bent along with the guide grooves 9, so that the connection between the reinforcing sleeve 3 and the upper nut sleeve 4 and the lower nut sleeve 5 is more firm.

[0025] The working principle and use process of the utility model: when connecting, firstly, the two ends of the reinforcing sleeve 3 are uniformly processed into the same rotating direction of the normal silk silk head, then the reinforcing sleeve 3 is respectively sleeved on the outside of the two connecting steels 1, then the connecting screw sleeve 6 is sleeved on the outside of the connecting steel 1, after the sleeving is completed, the upper nut sleeve 4 is connected with the connecting steel 1 containing the connecting screw sleeve 6 through the connecting thread 2, then the one end of the connecting screw sleeve 6 is aligned with the one end of the upper nut sleeve 4 by rotating the connecting screw sleeve 6, after the alignment, the lower nut sleeve 5 is connected with the other connecting steel 1 through the connecting thread 2, then the port of the lower nut sleeve 5 is aligned with the port of the upper nut sleeve 4, then the connecting screw sleeve 6 is sleeved on the outside of the upper nut sleeve 4 and the lower nut sleeve 5 under the threaded connection, the preliminary connection of the reinforcing end of the steel bar is completed, the steel bar joint is connected with the upper nut sleeve 4 and the lower nut sleeve 5 through the connecting thread 2, the middle joint is connected through the connecting screw sleeve 6, the joint strength is high, the quality is reliable, the rotating direction of the connecting thread 2 of the steel bar is the same, the worker is free from classification processing, the artificial labor intensity is reduced, the construction progress is accelerated, the reinforcing end of the steel bar is separately tightened with the upper nut sleeve 4 and the lower nut sleeve 5, the middle steel bar joint is connected in the screw sleeve type split sleeve, when one side of the steel bar is tightened, the other side of the steel bar will not rotate, it is ensured that the end of each steel bar silk head can be tightly contacted with the bottom of the sleeve, the sleeve and the steel bar silk head are combined tightly, the performance is stable and reliable, two steel bars are connected without welding, there is no open fire operation on the spot, the construction can be carried out all day long, and the utility model is environmental protection and energy saving;

[0026] After the connecting screw sleeve 6 connects the upper nut sleeve 4 and the lower nut sleeve 5, the connecting screw rod 14 is connected with the connecting screw cylinder 13, the two reinforcing sleeves 3 clamp the upper nut sleeve 4 and the lower nut sleeve 5, so that the connection between the upper nut sleeve 4 and the lower nut sleeve 5 is more firm, thereby increasing the connection strength of the reinforcing steel bars, meanwhile, the bent connecting lug 8 is initially in a straight state, when the connecting screw rod 14 is connected with the connecting screw cylinder 13, the two reinforcing sleeves 3 are close to each other, at this time, the bent connecting lug 8 penetrates the trapezoidal port 10 and is embedded in the adjacent guide groove 9, under the limiting and guiding of the guide groove 9, the bent connecting lug 8 is bent along with the guide groove 9, so that the connection between the reinforcing sleeve 3 and the upper nut sleeve 4 and the lower nut sleeve 5 is more firm, thereby further improving the connection strength of the two side reinforcing steel bars 1;

[0027] The wire head processing equipment and the sleeve compression joint machine used on site are ordinary equipment, small in power and low in power consumption, and do not need special power distribution, thereby saving resources.

[0028] Finally, it should be noted that: the above only for the preferred examples of the utility model, and not for limiting the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A restrained mechanical connection structure of end-to-end reinforcement, comprising a connecting reinforcement (1), characterized in that, Both said connecting steel bars (1) opposite one end are provided with connecting threads (2), the connecting steel bars (1) are slidingly sleeved with reinforcing sleeves (3) near the connecting threads (2), one side of the connecting steel bars (1) one end outside is threadedly connected with an upper nut sleeve (4), the other side of the connecting steel bars (1) one end outside is threadedly connected with a lower nut sleeve (5), the upper nut sleeve (4) and the lower nut sleeve (5) are connected through a connecting screw sleeve (6).

2. The mechanical connection structure of the restrained end-to-end reinforcement according to claim 1, wherein The connecting screw sleeve (6) is uniformly provided with anti-skid lines (7) on the outside.

3. The mechanical connection structure of the restrained end-to-end reinforcement according to claim 1, wherein The connecting threads (2) of both said connecting steel bars (1) one end outside are the same in the screw rotation direction.

4. The mechanical connection structure of the restrained end-to-end reinforcement according to claim 1, wherein Both sides of one end of two said reinforcing sleeves (3) are welded with connecting ears (11), one side of the connecting ears (11) is provided with a connecting hole (12) penetrating on one side, the other side of the connecting ears (11) is welded with a connecting screw cylinder (13) on one side, the connecting hole (12) and the adjacent connecting screw cylinder (13) are threadedly connected with a connecting screw rod (14).

5. The mechanical connection structure of the restrained end-to-end reinforcement according to claim 4, wherein Both ends of the upper nut sleeve (4) and the lower nut sleeve (5) are uniformly and spacedly welded with bent connecting ears (8), both ends of two said reinforcing sleeves (3) are uniformly provided with guide grooves (9).

6. The mechanical connection structure of the restrained end-to-end reinforcement according to claim 5, wherein One end of the guide groove (9) is provided with a trapezoidal port (10), the bent connecting ear (8) is embedded in the adjacent guide groove (9) through the trapezoidal port (10). One end of the guide groove (9) is provided with a trapezoidal port (10), the bent connecting ear (8) is embedded in the adjacent guide groove (9) through the trapezoidal port (10).

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