CN220908904U - Reinforcing bar axial extrusion attach fitting and connection structure - Google Patents

Abstract

The utility model relates to the technical field of steel bar connection, in particular to a steel bar axial extrusion connection joint and a connection structure, wherein the steel bar axial extrusion connection joint comprises: the clamping piece group and the sleeves with the same number as the outer conical surface sections. The clamping piece group comprises a plurality of clamping pieces which are used for coating the outer sides of the two sections of steel bar base materials to be connected, and the outer surfaces of the clamping pieces comprise cylindrical sections and outer conical surface sections with inclined chamfers at least at one ends; the sleeve comprises a straight cylinder section and an inner conical section, wherein an included angle between the inner conical section and the axis of the inner conical section is larger than or equal to an included angle between the outer conical section and the axis of the outer conical section, the length of the inner conical section is smaller than that of the straight cylinder section, and the inner conical section is used for extruding the outer conical section, so that the straight cylinder section is sleeved and pressed outside the cylindrical section. The problem that the existing crimping structure in the prior art has a falling risk after long-time use or the falling-preventing structure is complex can be solved.

Description

Reinforcing bar axial extrusion attach fitting and connection structure

Technical Field

The utility model relates to the technical field of steel bar connection, in particular to a steel bar axial extrusion connection joint and a connection structure.

Background

The steel bar connection technology has become an indispensable technology in modern buildings, and is also one of important means for guaranteeing the quality of building engineering, and with the continuous development and perfection of the technology, the technology plays an important role in future buildings.

The current common reinforcement connection modes mainly comprise three types, namely binding connection, welding connection and mechanical connection, and the economic benefits of the reinforcement connection modes are greatly different. Binding and linking mainly rely on cohesion force, biting force and the like between concrete and steel bars to connect the steel bars, and the traditional connection mode is not only used for overlapping and greatly wasting materials, but also poor in stress performance to influence engineering quality; the welding connection can effectively connect the steel bars under different conditions, but special equipment, materials, namely electric power are required for welding, the energy consumption is high, the requirements on personnel are strict, the construction environment is also required by a certain degree, and the welding quality cannot be effectively ensured; most of mechanical connection adopts straight thread sleeve connection, the screw thread needs to be rolled on the end part of the steel bar in advance, the irregular cross section of the end part of the steel bar causes larger cross section diameter tolerance, the thread rolling technology is difficult to ensure the machining precision of the thread head, the connection quality is influenced, and the engineering hidden trouble is caused. And the threaded sleeve connection has high centering requirement on the steel bars, and the construction convenience is poor.

In addition, there is a crimping structure, but the existing crimping structure has a problem of a risk of falling off after a long-time use or a complicated anti-falling structure.

Disclosure of utility model

Aiming at the defects in the prior art, the utility model aims to provide a reinforcing steel bar axial extrusion connecting joint and a connecting structure, which can solve the problems that the existing crimping structure in the prior art has a falling risk or has a complex falling-preventing structure after long-time use.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a steel bar axial extrusion connecting joint, which comprises:

The clamping piece group comprises a plurality of clamping pieces which are used for being coated on the outer sides of two sections of steel bar base materials to be connected, and the outer surfaces of the clamping pieces comprise cylindrical sections and outer conical surface sections with inclined chamfers at least at one ends;

The sleeve comprises straight barrel sections and inner cone sections, wherein the included angle between each inner cone section and the axis of each inner cone section is larger than or equal to the included angle between each outer cone section and the axis of each outer cone section, the length of each inner cone section is smaller than that of each straight barrel section, and the inner cone sections are used for extruding the outer cone sections, so that the straight barrel sections are sleeved and pressed outside the cylindrical sections.

In some alternatives, the cuts of adjacent clips are spiral cuts at a set angle or straight cuts in the axial direction.

In some alternatives, both ends of the clamping piece are outer conical surface sections with inclined chamfers, and two sleeves are correspondingly matched.

In some alternatives, the lengths of the two sleeves are the same, and the sum of the lengths of the straight barrel section and the inner conical section of the two sleeves is equal to the sum of the lengths of the cylindrical section and the outer conical section of the clip.

In some alternative solutions, an end of the straight barrel section away from the inner conical surface section is provided with a limiting protrusion protruding inwards, and the limiting protrusion is used for abutting against the end of the outer conical surface section when the sleeve is completely pressed on the outer side of the clamping piece.

In some alternative solutions, the inner diameter of the limiting protrusion is smaller than the outer diameter of the small diameter end of the outer conical surface section, and is larger than or equal to the inner diameter of the small diameter end of the outer conical surface section.

In some alternatives, three clips are included that are evenly split in the circumferential direction.

In some alternatives, the clip is provided with a saw tooth thread on the inner surface.

In some alternatives, the length ratio of the straight barrel section to the inner cone section is (4-6): 1.

On the other hand, the utility model also provides a steel bar axial extrusion connecting structure, which comprises the following steps:

Two sections of steel bar parent metal;

The outer surfaces of the clamping pieces comprise cylindrical sections and outer conical surface sections with inclined chamfers at least at one end;

The sleeve comprises straight barrel sections and inner cone sections, wherein the included angle between each inner cone section and the axis of each inner cone section is larger than or equal to the included angle between each outer cone section and the axis of each outer cone section, the length of each inner cone section is smaller than that of each straight barrel section, and the inner cone sections are used for extruding the outer cone sections, so that the straight barrel sections are sleeved outside the cylindrical sections.

Compared with the prior art, the utility model has the advantages that: after the sleeve is extruded to the clamping piece, the straight barrel section of the sleeve is completely positioned at the outer side of the clamping piece, the inner conical section is in a suspended state and cannot bear the force of the axial direction of the clamping piece, only the straight barrel section is subjected to the force of the radial direction of the cylindrical section, and the length of the inner conical section is smaller than that of the straight barrel section, so that the risk of falling off is basically avoided after long-time use, and the safety of connection is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a sleeve beginning to hold a clip according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a sleeve fully sleeved outside a clip according to an embodiment of the present utility model;

Fig. 3 is a schematic structural view of an axial extrusion joint for reinforcing steel bars provided with a limit protrusion according to an embodiment of the present utility model;

FIG. 4 is an enlarged schematic view of the portion I in FIG. 3;

FIG. 5 is a schematic view of a clip set with a cut as a spiral cut line;

fig. 6 is a schematic view of a clip set with a cut being a straight tangent.

In the figure: 1. a clamping piece; 11. a cylindrical section; 12. an outer conical surface section; 13. saw tooth threads; 2. a reinforcing steel bar base material; 3. a sleeve; 31. a straight barrel section; 32. an inner conical surface section; 33. and a limit protrusion.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the present invention provides a reinforcing bar axial compression joint, comprising: the clamping piece group and the sleeve 3 with the same number as the outer conical surface sections 12. The clamping piece group comprises a plurality of clamping pieces 1 which are used for being coated on the outer sides of two sections of steel bar base materials 2 to be connected, and the outer surface of each clamping piece 1 comprises a cylindrical section 11 and at least one outer conical section 12 with a bevel chamfer at one end; the sleeve 3 comprises a straight cylinder section 31 and an inner cone section 32, wherein an included angle between the inner cone section 32 and the axis is larger than or equal to an included angle between the outer cone section 12 and the axis, the length of the inner cone section 32 is smaller than that of the straight cylinder section 31, and the inner cone section 32 is used for extruding the outer cone section 12, so that the straight cylinder section 31 is sleeved and pressed outside the cylindrical section 11.

When the steel bar axial extrusion connecting joint is used, the sleeve 3 is sleeved on the outer side of the steel bar base metal 2, the plurality of clamping pieces 1 are coated on the outer sides of the two sections of steel bar base metal 2 to be connected, the middle points of the clamping pieces 1 are aligned with joints of the two sections of steel bar base metal 2 to be connected, the sleeve 3 is moved, the inner conical surface section 32 of the sleeve 3 is positioned on the outer side of the outer conical surface section 12 of the clamping piece 1, the sleeve 3 is continuously moved, the inner conical surface section 32 of the sleeve 3 is extruded on the outer conical surface section 12 of the clamping piece 1, the diameter of the cylindrical section 11 of the clamping piece group formed by the clamping pieces 1 is gradually reduced through the shrinkage extrusion effect of the inner conical surface section 32 of the sleeve 3 on the outer conical surface section 12 of the clamping piece 1, the inner surface of the clamping piece 1 is gradually extruded to clamp steel bars, the straight barrel section 31 of the sleeve 3 is completely positioned on the outer side of the clamping piece 1, and extrusion is completed. In this scheme, after accomplishing sleeve 3 to clamping piece 1 extrusion, sleeve 3's straight section of thick bamboo 31 is located the outside of clamping piece 1 completely, and interior conical section 32 is in unsettled state, can not receive clamping piece 1 axial direction's force, and only straight section of thick bamboo 31 receives the radial direction's of cylinder section 11 force to the length of interior conical section 32 is less than the length of straight section of thick bamboo 31, therefore long-time use basically does not have the risk that drops, has improved the security of connection.

In addition, because the included angle between the inner conical surface section 32 and the axis is greater than or equal to the included angle between the outer conical surface section 12 and the axis, when the included angle between the inner conical surface section 32 and the axis is equal to the included angle between the outer conical surface section 12 and the axis, when the inner conical surface section 32 is sleeved outside the outer conical surface section 12, only the outer conical surface section 12 is extruded, the whole clamping piece 1 is not extruded, thereby reducing the requirement on the extrusion force of the sleeve 3, and as the axial movement of the sleeve 3, the inner side of the clamping piece 1 gradually bites the reinforcing steel base metal 2, the part of the clamping piece 1, which does not bites the reinforcing steel base metal 2, is less and less, and the requirement on the extrusion force of the sleeve 3 can be further reduced.

When the included angle between the inner conical surface section 32 and the axis is larger than the included angle between the outer conical surface section 12 and the axis, the inner conical surface section 32 is sleeved outside the outer conical surface section 12, and only the inner conical surface section 32 is in line contact with the outer conical surface section 12, and only one circle of the outer conical surface section 12 is extruded, so that compared with the condition that the included angle between the inner conical surface section 32 and the axis is equal to the included angle between the outer conical surface section 12 and the axis, the extrusion force requirement of the sleeve 3 is smaller, and along with the axial movement of the sleeve 3, the inner side of the clamping piece 1 gradually bites the reinforcing steel base metal 2, the part of the clamping piece 1, which does not bites the reinforcing steel base metal 2, is smaller and smaller, and the extrusion force requirement of the sleeve 3 can be further reduced.

In addition, in this example, the inner diameter of the straight barrel section 31 is smaller than the outer diameter of the cylindrical section 11 on the outer surface of the clamping piece set, the inner diameter of the small diameter end of the inner conical section 32 is equal to the inner diameter of the straight barrel section 31, when the sleeve 3 is ensured to be sleeved outside the clamping piece 1, the clamping piece 1 is extruded, the diameter of the large diameter end of the inner conical section 32 is larger than the diameter of the cylindrical section 11, and the sleeve 3 can be conveniently sleeved outside the clamping piece 1 in the initial stage. The inner diameter of the clamping piece 1 is not smaller than the diameter of the steel bar base material 2, the contact area of the clamping piece 1 and the steel bar base material 2 is ensured, the biting force is improved, and the inner diameter of the straight barrel section 31 is not smaller than the diameter of the steel bar base material 2. The sleeve 3 and the clamping piece 1 are made of the same material, the hardness of the sleeve 3 is not less than that of the clamping piece 1, and the hardness of the connected steel bar base metal 2 is less than that of the clamping piece 1.

In this scheme, when a plurality of clamping pieces 1 splice together, the middle part forms the cylindrical space of centre gripping reinforcing bar parent metal 2, and the surface includes cylinder section 11 and is located the outer conical surface section 12 of tip, and the tip that the little footpath of outer conical surface section 12 holds is located whole clamping piece 1, and the external diameter of the big footpath end of outer conical surface section 12 is the same with the external diameter of cylinder section 11 to smooth transition. The inner diameter of the cylindrical space is not smaller than the diameter of the reinforcing steel bar base material 2, and when the plurality of clamping pieces 1 are coated on the outer sides of the two sections of the reinforcing steel bar base material 2 to be connected without being extruded, gaps exist among the plurality of clamping pieces 1. After the compression of the clips 1 by the sleeve 3 is completed, the gap between the clips 1 is reduced. The included angle between the inner conical surface section 32 and the axis is greater than or equal to the included angle between the outer conical surface section 12 and the axis, and the sleeve 3 is integrally sleeved on the clamping piece group and enables the clamping piece group to be embedded into the steel bar base material to connect two steel bars to be connected into a whole through the shrinkage extrusion action of the inner conical surface section 32.

In addition, the clamping piece 1 can be provided with an external conical surface section 12 at one end only, so that a sleeve 3 is arranged in a matching way; it is also possible to provide the outer conical sections 12 at both ends of the clip 1 so as to match the two sleeves 3, and when the plurality of clips 1 are pressed through the sleeves 3, the two sleeves 3 are simultaneously pressed from the outer conical sections 12 at both ends of the clip 1, respectively.

In some alternative embodiments, as shown in fig. 5 and 6, the cuts of adjacent clips 1 are in the form of helical cuts at a set angle or in the form of straight cuts in the axial direction.

In this embodiment, the spiral cutting lines with the cut-outs of the adjacent clips 1 having a predetermined angle can better cover each clip 1 on the outer side of the reinforcing bar base metal 2, and when the plurality of clips 1 are pressed by the sleeve 3, the pressed points of the clips 1 are changed at the moment, so that the clips 1 can be pressed by the sleeve 3.

In some alternative embodiments, the bar axial compression joint comprises three clips 1 evenly divided in the circumferential direction.

In this embodiment, the clamping pieces 1 evenly divided in the circumferential direction are coated on the outer side of the reinforcing steel bar base material 2, so that the number of the clamping pieces 1 is not too large, the construction is easy, and the reinforcing steel bar base material 2 can be better coated.

In some alternative embodiments, the clip 1 has tapered outer surface sections 12 with beveled corners at both ends, and two sleeves 3 are correspondingly matched.

In the embodiment, when the plurality of clips 1 are pressed by the sleeve 3, the two sleeves 3 are simultaneously pressed from the outer tapered surface sections 12 at both ends of the clips 1, respectively. The two sleeves 3 are respectively extruded from the two ends of the clamping piece 1, so that the stress on the two ends of the clamping piece 1 is more balanced, and the clamping piece 1 is prevented from sliding relative to the reinforced bar base metal 2. The middle point of the holding clamping piece 1 is positioned at the butt joint position when the two steel bar base materials 2 are initially coated, so that the connection reliability is ensured.

In some alternative embodiments, the lengths of the two sleeves 3 are the same, and the sum of the lengths of the straight barrel section 31 and the inner conical section 32 of the two sleeves 3 is equal to the sum of the lengths of the cylindrical section 11 and the outer conical section 12 of the clip 1.

In the present embodiment, the lengths of the sleeves 3 are designed to be the same, and the sum of the lengths of all the straight barrel sections 31 and the inner cone sections 32 of the two sleeves 3 is designed to be equal to the sum of the lengths of the cylindrical sections 11 and the outer cone sections 12 of the clip 1. Like this with two sleeve 3 follow clamping piece group both ends extrusion respectively, when the complete cover is established in clamping piece group outside, sleeve 3's tip and clamping piece 1's tip parallel and level, at this moment, interior conical surface section 32 is in unsettled state, can not receive clamping piece 1's axial force, and the outer conical surface section 12 outside also does not contact with sleeve 3, can not exert axial force for sleeve 3, can effectively reduce sleeve 3 from clamping piece 1 outside possibility that drops.

In addition, since the midpoint of the clip 1 is located at the junction when the two reinforcing bar base materials 2 are outside, the sum of the lengths of all the straight barrel sections 31 and the inner cone sections 32 of the two sleeves 3 is designed to be equal to the sum of the lengths of the cylindrical sections 11 and the outer cone sections 12 of the clip 1, and when the two sleeves 3 are completely sleeved outside the clip set, the junction of the inner cone sections 32 of the two sleeves 3 is also located at the junction when the two reinforcing bar base materials 2 are outside. The inner conical surface section 32 is suspended at this point, so that the pressing force of the clip 1 to the reinforcing bar base material 2 at this time is small, and no force in the axial direction is applied to the reinforcing bar base material 2, so that the removal of the reinforcing bar base material 2 can be effectively prevented.

As shown in fig. 3 and 4, in some alternative embodiments, the end of the straight barrel section 31 remote from the inner conical section 32 is provided with an inwardly projecting stop projection 33 for abutment against the end of the outer conical section 12 when the sleeve 3 is fully pressed against the outside of the clip 1.

In this embodiment, a limiting protrusion 33 extending inward is provided at one end of the straight barrel section 31 away from the inner conical surface section 32, so that when the two sleeves 3 are sleeved on the clamping piece 1, the sleeve 3 can be limited to completely sleeve the clamping piece 1 and axially move, the sleeve 3 is prevented from being continuously moved after being completely sleeved on the clamping piece 1, and the butt joint of the inner conical surface sections 32 of the two sleeves 3 is ensured to be located at the butt joint of the outer sides of the two reinforcing steel bar base materials 2.

In some alternative embodiments, the inner diameter of the stop protrusion 33 is smaller than the outer diameter of the small diameter end of the outer cone section 12 and is greater than or equal to the inner diameter of the small diameter end of the outer cone section 12.

In this example, the limiting protrusion 33 is in a circular ring shape and is disposed at the end of the straight barrel section 31 of the sleeve 3, and the limiting protrusion 33 is designed to have an inner diameter smaller than the outer diameter of the small diameter end of the outer conical surface section 12 and larger than or equal to the inner diameter of the small diameter end of the outer conical surface section 12, so as to ensure that the sleeve 3 is abutted against the end of the outer conical surface section 12 when being completely pressed outside the clamping piece 1.

In some alternative embodiments, the inner surface of the clip 1 is provided with a saw tooth thread 13. The sleeve 3 at two ends moves along the axial direction of the steel bar parent material 2 to be connected to be close to each other, the diameter of the cylindrical section 11 of the clamping piece group formed by the clamping pieces 1 is gradually reduced through the contraction and extrusion action of the inner conical surface section 32 of the sleeve 3, and the sawtooth threads 13 are arranged on the inner surface of the clamping piece 1 to gradually extrude and bite the steel bar parent material 2, so that extrusion is completed. In this example, the saw-tooth threads 13 are provided on the inner surface of the clamping piece 1, so that the clamping piece 1 can tightly press the reinforcing steel bar base material 2.

In some alternative embodiments, the length ratio of the straight barrel section 31 to the inner conical section 32 is (4-6): 1. In this example, the length ratio of the straight barrel section 31 to the inner conical section 32 is (4-6): 1, so that the clamping of the clamping piece 1 by the sleeve 3 can be ensured.

In another aspect, the present invention provides a reinforcing bar axial compression connection structure, comprising: two sections of steel bar base materials 2, clamping piece groups and sleeves 3 with the same number as the outer conical surface sections 12. The clamping piece group comprises a plurality of clamping pieces 1 which are used for being coated on the outer sides of two sections of steel bar base materials 2 to be connected, and the outer surface of each clamping piece 1 comprises a cylindrical section 11 and at least one outer conical section 12 with a bevel chamfer at one end; the sleeve 3 with the same number as the outer conical surface sections 12, the sleeve 3 comprises straight cylinder sections 31 and inner conical surface sections 32, an included angle between the inner conical surface sections 32 and the axes thereof is larger than or equal to an included angle between the outer conical surface sections 12 and the axes thereof, the length of the inner conical surface sections 32 is smaller than that of the straight cylinder sections 31, and the inner conical surface sections 32 are used for extruding the outer conical surface sections 12, so that the straight cylinder sections 31 are sleeved outside the cylindrical sections 11.

When the steel bar axial extrusion connecting structure is used, the sleeve 3 is sleeved on the outer side of the steel bar base metal 2, the clamping pieces 1 are coated on the outer sides of the two sections of the steel bar base metal 2 to be connected, the middle points of the clamping pieces 1 are aligned with joints of the two sections of the steel bar base metal 2 to be connected, the sleeve 3 is moved, the inner conical surface sections 32 of the sleeve 3 are positioned on the outer sides of the outer conical surface sections 12 of the clamping pieces 1, the sleeve 3 is continuously moved, the inner conical surface sections 32 of the sleeve 3 are extruded on the outer conical surface sections 12 of the clamping pieces 1, the diameter of the cylindrical sections 11 of the clamping piece group formed by the clamping pieces 1 is gradually reduced through the shrinkage extrusion effect of the inner conical surface sections 32 of the sleeve 3 on the outer conical surface sections 12 of the clamping pieces 1, the inner surfaces of the clamping pieces 1 are gradually extruded to clamp steel bars, the straight barrel sections 31 of the sleeve 3 are completely positioned on the outer sides of the clamping pieces 1, and extrusion is completed. In this scheme, after accomplishing sleeve 3 to the extrusion of clamping piece 1, sleeve 3's straight section of thick bamboo 31 is located the outside of clamping piece 1 completely, and interior conical section 32 is in unsettled state, can not receive clamping piece 1 axial direction's force, and only straight section of thick bamboo 31 receives the radial direction's of cylinder section 11 force to the length of interior conical section 32 is less than the length of straight section of thick bamboo 31, therefore long-time use basically does not have the risk that drops, has improved the security of connection.

In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be noted that in the present application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A reinforced bar axial compression joint, comprising:

The clamping piece group comprises a plurality of clamping pieces (1) which are used for being coated on the outer sides of two sections of steel bar base materials (2) to be connected, and the outer surface of each clamping piece (1) comprises a cylindrical section (11) and an outer conical section (12) with at least one inclined chamfer at one end;

The sleeve (3) with outer conical surface section (12) number is the same, sleeve (3) are including straight section of thick bamboo (31) and interior conical surface section (32), contained angle between interior conical surface section (32) and its axis is greater than or equal to contained angle between outer conical surface section (12) and its axial, the length of interior conical surface section (32) is less than the length of straight section of thick bamboo (31), interior conical surface section (32) are used for the extrusion outer conical surface section (12), make straight section of thick bamboo (31) cover is established and is held in the cylinder section (11) outside.

2. The reinforced axially extruded joint of claim 1, wherein: the cuts of the adjacent clamping pieces (1) are spiral cutting lines with set angles or straight tangent lines along the axial direction.

3. The reinforced axially extruded joint of claim 1, wherein: both ends of the clamping piece (1) are respectively provided with an external conical surface section (12) with a slope chamfer, and two sleeves (3) are correspondingly matched.

4. A reinforced axial compression joint as claimed in claim 3, wherein: the lengths of the two sleeves (3) are the same, and the sum of the lengths of the straight barrel sections (31) and the inner conical surface sections (32) of the two sleeves (3) is equal to the sum of the lengths of the cylindrical sections (11) and the outer conical surface sections (12) of the clamping pieces (1).

5. The reinforced axially extruded joint of any of claims 1-4, wherein: one end of the straight barrel section (31) far away from the inner conical surface section (32) is provided with a limiting protrusion (33) extending inwards and used for abutting against the end of the outer conical surface section (12) when the sleeve (3) is completely pressed on the outer side of the clamping piece (1).

6. The reinforced axially extruded joint of claim 5, wherein: the inner diameter of the limiting bulge (33) is smaller than the outer diameter of the small-diameter end of the outer conical surface section (12) and is larger than or equal to the inner diameter of the small-diameter end of the outer conical surface section (12).

7. The reinforced axially extruded joint of claim 1, wherein: comprises three clamping pieces (1) which are evenly divided along the circumferential direction.

8. The reinforced axially extruded joint of claim 1, wherein: the inner surface of the clamping piece (1) is provided with sawtooth threads (13).

9. The reinforced axially extruded joint of claim 1, wherein: the length ratio of the straight section (31) to the inner conical section (32) is (4-6): 1.

10. The utility model provides a reinforcing bar axial extrusion connection structure which characterized in that includes:

Two sections of steel bar parent metal (2);

the clamping pieces (1) are coated on two sections of the reinforced bar base metal (2), and the outer surface of each clamping piece (1) comprises a cylindrical section (11) and an outer conical section (12) with at least one inclined chamfer at one end;

The sleeve (3) with the same number of the outer conical surface sections (12), the sleeve (3) comprises straight cylinder sections (31) and inner conical surface sections (32), an included angle between each inner conical surface section (32) and the axis of each inner conical surface section is larger than or equal to an included angle between each outer conical surface section (12) and the axis of each outer conical surface section, the length of each inner conical surface section (32) is smaller than that of each straight cylinder section (31), and each inner conical surface section (32) is used for extruding the corresponding outer conical surface section (12), so that the corresponding straight cylinder section (31) is sleeved outside the corresponding cylindrical section (11).