CN221502461U - Reinforcing steel bar connecting sleeve - Google Patents

Abstract

The utility model discloses a steel bar connecting sleeve, which comprises a conical lock sleeve, an inner conical sleeve and an outer conical sleeve, wherein the conical lock sleeve is of a circular tubular structure, and connecting threads are arranged on the inner wall of the conical lock sleeve; the two conical lock sleeves are respectively fixed on the two sections of connected steel bars through connecting threads, and the outer wall of one end, far away from the end part of the connected steel bar, of each conical lock sleeve is provided with a conical surface; a plurality of elastic grooves are uniformly distributed on the conical surface; the inner wall of the inner taper sleeve is provided with a first taper part and sleeved on the other taper lock sleeve, and one end of the outer wall of the inner taper sleeve, which is far away from the first taper part, is provided with an external thread; the inner wall of the outer cone sleeve is provided with a second cone part and sleeved on one of the cone lock sleeves, and one end of the inner wall of the outer cone sleeve, which is far away from the second cone part, is provided with an internal thread; the internal thread is matched with the external thread. The utility model provides a steel bar connecting sleeve, which realizes the connection of two connected steel bars without rotating the steel bars, can apply inward holding grip, and improves the connection quality of the steel bars.

Description

Reinforcing steel bar connecting sleeve

Technical Field

The utility model relates to the technical field of construction steel bar connection, in particular to a steel bar connection sleeve.

Background

The steel bar connecting sleeve is a common steel bar connecting technology in large-scale construction engineering in the construction industry, and when the steel bars are connected, the steel bar connecting sleeve has the function of connecting two steel bars together in a threaded or radial sectional extrusion connection mode, has the advantages of simple and rapid operation, raw material saving, stable quality, no restriction of steel bar components and the like, and is widely applied to the steel bar connection of large-scale buildings such as domestic and overseas large-scale building bridges, subways, hydraulic engineering and the like.

At present, the mechanical connection of reinforcing steel bars in a building structure is widely connected by adopting a threaded sleeve connection mode, the principle is that two ends of the reinforcing steel bars are manufactured into a reinforcing steel bar thread head with corresponding threads, then the connecting sleeve with corresponding internal threads is used for connecting the two reinforcing steel bars, the sleeve and the reinforcing steel bars are rotated in sequence, at least one reinforcing steel bar needs to rotate and move along the axial direction in the connection process, therefore, the reinforcing steel bar connection mode is only suitable for single reinforcing steel bar connection, and for a plurality of reinforcing steel bar parts, such as reinforcing steel bar meshes, reinforcing steel bar cages and the like, and the reinforcing steel bars of the building components are connected, and the reinforcing steel bars cannot rotate, so that the reinforcing steel bar connection is difficult to realize by the connection mode.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the steel bar connecting sleeve, which realizes the connection of two connected steel bars without rotating the steel bars, can apply the holding force of inward holding, and improves the connection quality of the steel bars.

The utility model is realized by the following technical scheme:

The steel bar connecting sleeve comprises a conical lock sleeve, an inner conical sleeve and an outer conical sleeve, wherein the conical lock sleeve is of a circular tubular structure, connecting threads are arranged on the inner wall of the conical lock sleeve, the two conical lock sleeves are respectively fixed on two sections of connected steel bars through the connecting threads, and conical surfaces are arranged on the outer walls of one ends, far away from the ends of the connected steel bars, of the two conical lock sleeves; a plurality of elastic grooves are uniformly distributed on the conical surface; the outer taper sleeve is of a hollow necking structure and sleeved on one of the taper lock sleeves, a first taper part matched with the taper surface of the taper lock sleeve is arranged on the inner wall of the outer taper sleeve, and an internal thread is arranged at one end, far away from the first taper part, of the inner wall of the outer taper sleeve; the inner taper sleeve is of a hollow necking structure and sleeved on the other taper lock sleeve, the inner wall of the inner taper sleeve is provided with a second taper part matched with the taper surface of the taper lock sleeve, and one end, far away from the second taper part, of the outer wall of the inner taper sleeve is provided with an external thread; the internal thread is matched with the external thread; in the technical scheme, the end parts of two connected reinforcing steel bars are processed with threads, the threads are rolling straight threads or upsetting straight threads, wherein two taper locks are respectively connected with two sections of connected reinforcing steel bars in a threaded mode, the outer taper sleeve is arranged on one taper lock sleeve, the inner taper sleeve is arranged on the other taper lock sleeve, the outer taper sleeve and the inner taper sleeve are connected together in a threaded mode, so that the two sections of connected reinforcing steel bars are fixed together, in the screwing process, the tapered parts of the outer taper sleeve and the inner taper sleeve are attached to the tapered surfaces of the taper lock sleeves, according to the force decomposition principle, the outer taper sleeve and the inner taper sleeve apply radial extrusion force to the tapered surfaces, the tapered lock sleeve with an inward holding force is achieved, the connection quality of the two reinforcing steel bars can be greatly improved, the cost is reduced, the labor intensity is reduced, the condition that the taper lock sleeve can be extruded by external force is required, deformation occurs under the action of the taper lock sleeve, when the taper lock sleeve is radially held tightly, the thread is formed, the thread tension force is improved, the bearing capacity of the thread is improved, the tension force is improved, the bearing capacity of the reinforcing steel bars is greatly is improved, the tension load is improved, and the bearing capacity of the reinforcing steel bars is greatly is improved, and the tension load is greatly, and the reinforcing steel bar is greatly deformed, and the load is greatly is guaranteed.

Preferably, the root of the elastic groove is provided with a round hole, and the diameter of the round hole is larger than the groove width of the elastic groove; in the technical scheme, the round hole can eliminate local stress concentration phenomenon, increase fatigue resistance of the conical lock sleeve and prolong service life of the conical lock sleeve.

Preferably, the elastic groove has at least three parts; in the technical scheme, the more the number of the elastic grooves is, the smaller the extrusion force requirement for deformation of the conical lock sleeve is, the lower the difficulty is in screwing the outer conical sleeve and the inner conical sleeve, and the certain labor intensity can be reduced.

Preferably, the taper angle of the tapered surface is no greater than 45 °; in the technical scheme, the cone angle of the conical surface is controlled at a certain angle, so that the axial resistance is reduced while the inward holding force is ensured to be applied.

Preferably, the outer wall of the inner cone sleeve is provided with a clamping part; in the technical scheme, the clamping part is used for facilitating the spanner to apply acting force and screwing the connecting sleeve and the outer cone sleeve.

Further preferably, the clamping part has a regular hexagonal structure; in the technical scheme, the regular hexagon structure can facilitate the operation process of the wrench, the position of the wrench is adjusted, and the wrench is not required to be twisted at a large angle, so that the labor intensity is reduced.

Preferably, the outer wall of the outer taper sleeve is of a polygonal structure; in the technical scheme, the polygonal structure is also convenient for placing the wrench, so that the wrench has reliable acting points for screwing operation.

The utility model has the beneficial effects that: 1. the device ensures that the conical lock sleeve generates radial holding force through the conical surface by screwing the inner conical sleeve and the outer conical sleeve, thereby realizing the steel bar connection of tight fit threads, and the holding force of the conical lock sleeve is increased along with the increase of the axial pulling force, so as to realize the connection when the two steel bars to be connected cannot rotate; 2. the device realizes gapless force transmission when the steel bars bear tension-compression alternating load, ensures the ultimate bearing capacity of the steel bars, improves the deformation performance of the steel bars caused by using load, greatly improves the stress environment of the steel bars, and improves the safety and quality of building structures; 3. the device has the advantages of simple structure, low manufacturing cost, convenient operation and high construction speed, and can not generate the decline of the connection quality of the reinforcing steel bars caused by the disturbance of the components when the grouting sleeve is used at present, thus realizing real dry operation construction.

Drawings

Fig. 1 is a schematic structural view of a reinforcing bar connecting sleeve according to a first embodiment;

fig. 2 is a schematic structural view of the connected reinforcing steel bar according to the first embodiment;

FIG. 3 is a schematic view of the inner cone sleeve according to the first embodiment;

FIG. 4 is a schematic view of a tapered lock sleeve according to the first embodiment;

FIG. 5 is a schematic view showing an arrangement structure of the elastic groove according to the first embodiment;

FIG. 6 is a schematic view of the outer cone sleeve according to the first embodiment;

in the figure: 1. a connected reinforcing steel bar; 11. thread of the wire head; 2. an inner taper sleeve; 21. a first large end; 211. an external thread; 22. a first tapered portion; 23. a first small end; 24. a clamping part; 3. a conical lock sleeve; 31. a connecting thread; 32. a conical surface; 33. an elastic groove; 34. a round hole; 4. an outer cone sleeve; 41. a second large end; 411. an internal thread; 42. a second taper; 43. a second small end.

Detailed Description

The following description of the embodiments of the present utility model will be made in detail and with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

Example 1

As shown in fig. 1 to 6, a steel bar connecting sleeve comprises a conical lock sleeve 3, an inner conical sleeve 2 and an outer conical sleeve 4, wherein the conical lock sleeve 3 is of a circular tubular structure, connecting threads 31 are arranged on the inner wall of the conical lock sleeve, two conical lock sleeves 3 are respectively fixed on two sections of connected steel bars 1 through the connecting threads 31, and conical surfaces 32 are arranged on the outer walls of one ends, far away from the ends of the connected steel bars, of the two conical lock sleeves 3; a plurality of elastic grooves 33 are uniformly distributed on the conical surface 32; the inner cone sleeve 2 is of a hollow necking structure and sleeved on the other cone lock sleeve 3, a first cone part 22 matched with the cone surface of the cone lock sleeve is arranged on the inner wall of the inner cone sleeve 2, a first large end part 21 is arranged at the front end of the first cone part 22, a first small end part 23 is arranged at the tail end of the first cone part 22, and an outer wall of the inner cone sleeve 2 is far away from one end of the first cone part, namely an outer thread 211 is arranged on the outer wall of the first large end part 21; the diameter of the first small end part 23 is larger than the outer diameter of the connected reinforcing steel bar 1; the outer cone sleeve 4 is of a hollow necking structure and sleeved on one of the cone lock sleeves 3, the inner wall of the outer cone sleeve 4 is provided with a second cone part 42 matched with the cone surface of the cone lock sleeve, the front end of the second cone part 42 is provided with a second large end part 41, the tail end of the second cone part 42 is provided with a second small end part 43, and one end, far away from the second cone part, of the inner wall of the outer cone sleeve 4, namely the inner wall of the second large end part 41 is provided with an inner thread 411; the diameter of the second small end 43 is larger than the outer diameter of the connected reinforcing steel bar 1; the inner thread 411 is matched with the outer thread 211; the end parts of two connected reinforcing steel bars 1 are provided with thread head threads 11, the thread head threads 11 are rolling straight threads or upsetting straight threads, the two conical lock sleeves 3 are respectively in threaded connection with the two sections of connected reinforcing steel bars 1 through connecting threads, the outer conical sleeve 4 is sleeved on one conical lock sleeve 3, the inner conical sleeve 2 is sleeved on the other conical lock sleeve 3, and the outer conical sleeve 4 and the inner conical sleeve 2 are connected with the outer threads 211 through the inner threads 411, so that the two sections of connected reinforcing steel bars 1 are fixed together, the conical parts of the outer conical sleeve 4 and the inner conical sleeve 2 are attached to the conical surfaces 32 of the conical lock sleeves 3 in the screwing process, the radial extrusion force is applied to the conical surfaces 32 by the outer conical sleeve 4 and the inner conical sleeve 2 according to the force decomposition principle, so that the open conical lock sleeve 3 has an inward holding force, the connection of the two reinforcing steel bars is realized, the connection quality of the reinforcing steel bars is greatly improved, the cost is reduced, the intensity is lightened, the strong connection of the reinforcing steel bars and the like is realized, the thread head is required, when the conical sleeve is radially held tightly, the thread head is formed, the thread head is tightly, the thread holding force is formed, the bearing capacity of the reinforcing steel bars is greatly improved, the bearing capacity of the reinforcing steel bars is greatly deformed, and the load is greatly deformed with the reinforcing steel bars, and the gap is greatly deformed with the reinforcing steel bar, and the tension load is greatly is ensured, and the construction load is greatly deformed, and the thread load-bearing the thread load is greatly is improved.

Preferably, the root of the elastic groove 33 is provided with a round hole 34, the diameter of the round hole 34 is larger than the groove width of the elastic groove 33, the round hole 34 can eliminate local stress concentration phenomenon, increase the fatigue resistance of the conical lock sleeve 3 and prolong the service life of the conical lock sleeve 3; the cone angle alpha of the conical surface 32 is not more than 45 degrees, and the cone angle alpha of the conical surface is controlled within the range, so that the resistance in the axial direction can be reduced while the inward holding force is ensured to be applied; the outer wall of the inner taper sleeve 2 is provided with a clamping part 24, and the clamping part 24 is used for facilitating a spanner to apply acting force so as to screw the inner taper sleeve 2 with the outer taper sleeve 4; further preferably, the clamping portion 24 has a regular hexagonal structure, so that the position of the wrench can be adjusted conveniently during the operation process of the wrench, and the wrench does not need to be turned at a large angle, so that the labor intensity is reduced; the outer wall of the outer cone sleeve 4 is of a polygonal structure, can be of a regular hexagon structure, and can be used for conveniently placing a wrench, so that the wrench has reliable force points for screwing operation.

The specific operation method of the device is as follows:

firstly, processing threads 11 of a steel bar tapping head on the connecting end parts of two connected steel bars 1 by special equipment;

Secondly, the first small end 23 of the inner taper sleeve 2 is aligned with the thread 11 of the connected steel bar 1 to penetrate, and the inner taper sleeve 2 is moved along the axis of the steel bar until the thread 11 of the connected steel bar 1 is completely exposed out of the first large end 21 of the inner taper sleeve 2; taking the conical lock sleeve 3, aligning the conical surface 32 of the conical lock sleeve 3 with the thread head threads 11 of the connected steel bar 1, screwing the connecting threads 31 of the conical lock sleeve into the thread head threads 11 of the connected steel bar 1, and screwing the connecting threads 31 of the conical lock sleeve 3 to fully wrap the thread head threads 11 of the connected steel bar 1;

Thirdly, the second small end 43 of the outer taper sleeve 4 is aligned with the thread 11 of the other connected steel bar 1 to penetrate, and the outer taper sleeve 4 is moved along the axis of the steel bar until the thread 11 of the thread on the connected steel bar 1 is completely exposed out of the internal thread 411 on the outer taper sleeve 4; taking another conical lock sleeve 3, aligning the conical surface 32 of the conical lock sleeve 3 with the thread 11 of the connected steel bar 1, screwing the connecting thread 31 of the conical lock sleeve 3 into the thread 11 of the connected steel bar 1, and completely wrapping the connecting thread 31 of the conical lock sleeve 3 with the thread 11 of the connected steel bar 1;

Fourthly, relatively moving the two connected reinforcing steel bars 1 along the axis until the end parts are contacted; moving the inner taper sleeve 2 axially along the connected reinforcing steel bar 1, so that the first large end 21 on the inner taper sleeve 2 passes through the conical surface 32 on the conical lock sleeve 3 until the first conical part 22 on the inner taper sleeve 2 is tightly attached to the conical surface 32 on the conical lock sleeve 3; moving the outer taper sleeve 4 along the axial direction of the reinforcing steel bar, so that the second large end 41 on the outer taper sleeve 4 passes through the conical surface 32 on the conical lock sleeve 3 until the second conical part 42 on the outer taper sleeve 4 is tightly attached to the conical surface 32 on the conical lock sleeve 3; the inner thread 411 on the outer taper sleeve 4 is screwed into the outer thread 211 of the inner taper sleeve 2, and the first taper portion 22 on the inner taper sleeve 2 and the second taper portion 42 on the outer taper sleeve 4 respectively press the taper surfaces 32 on the respective inner taper lock sleeves 3 along with the screwing of the threads, and since the taper lock sleeves 3 are provided with the elastic grooves 33, the mutual pressing of the taper surfaces causes the taper lock sleeves 3 to generate radial pressing force to the reinforcing bars, so that the two connected reinforcing bars are tightly connected together.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present utility model.

Claims (7)

1. A steel bar connecting sleeve, characterized in that: the tapered lock sleeve is of a circular tubular structure, connecting threads are arranged on the inner wall of the tapered lock sleeve, the two tapered lock sleeves are respectively fixed on two sections of connected steel bars through the connecting threads, and a tapered surface is arranged on the outer wall of one end, far away from the end part of the connected steel bars, of each tapered lock sleeve; a plurality of elastic grooves are uniformly distributed on the conical surface; the inner taper sleeve is of a hollow necking structure and sleeved on the other taper lock sleeve, a first taper part matched with the taper surface of the taper lock sleeve is arranged on the inner wall of the inner taper sleeve, and an external thread is arranged at one end, far away from the first taper part, of the outer wall of the inner taper sleeve; the outer taper sleeve is of a hollow necking structure and sleeved on one of the taper lock sleeves, the inner wall of the outer taper sleeve is provided with a second taper part matched with the taper surface of the taper lock sleeve, and one end, far away from the second taper part, of the inner wall of the outer taper sleeve is provided with an internal thread; the internal thread is matched with the external thread.

2. A reinforcing bar coupler sleeve as set forth in claim 1, wherein: the root of the elastic groove is provided with a round hole, and the diameter of the round hole is larger than the groove width of the elastic groove.

3. A reinforcing bar coupler sleeve as set forth in claim 1, wherein: the elastic groove is at least two.

4. A reinforcing bar coupler sleeve as set forth in claim 1, wherein: the taper angle of the tapered surface is no greater than 45 °.

5. A reinforcing bar coupler sleeve as set forth in claim 1, wherein: the outer wall of the inner cone sleeve is provided with a clamping part.

6. The reinforcing bar coupler sleeve as set forth in claim 5, wherein: the clamping part is in a regular hexagon structure.

7. A reinforcing bar coupler sleeve as set forth in claim 1, wherein: the outer wall of the outer taper sleeve is of a polygonal structure.