CN210067229U

CN210067229U - Positioning connection structure of steel bar capable of infinitely extending connection

Info

Publication number: CN210067229U
Application number: CN201920255236.8U
Authority: CN
Inventors: 吕福元; 吕建辉; 吕允胜; 李政育; 张世明; 柯如娟; 吕盈莹
Original assignee: Banana Energy Saving Technology Xiamen Co Ltd
Current assignee: Banana Energy Saving Technology Xiamen Co Ltd
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2020-02-14
Anticipated expiration: 2029-02-28

Abstract

The utility model provides a positioning joint structure of a reinforcing steel bar capable of being infinitely extended and connected, which comprises a first joint part, a second joint part and a pin joint device; the first joint part is formed by jointing a first steel bar section and a first pin joint section with a first outer thread through friction compression joint, a first bulge is arranged at the friction compression joint, a first fixing component is arranged on the first pin joint section, in addition, the second joint part is formed by jointing a second steel bar section and a second pin joint section with a second outer thread through friction compression joint, a second bulge is arranged at the friction compression joint, and two ends of the pin joint are respectively screwed with the first joint part and the second joint part. Therefore, the time required for jointing the reinforced beam column, the reinforced cage or the continuous wall can be shortened.

Description

Positioning connection structure of steel bar capable of infinitely extending connection

Technical Field

The present invention relates to a positioning joint structure, and more particularly to a positioning joint structure for reinforcing bars that can be infinitely extended and connected.

Background

In the construction or civil engineering, the construction of the beam, the column, the reinforcement cage, the continuous wall and other structures can use the construction method of reinforcement splicing, and the general traditional splicing construction method is divided into two types of binding and welding, and because the traditional construction method relies on the technique of workers, in order to avoid the deviation of the base and the deflection of the spliced structure, the angle of the reinforcement must be continuously adjusted, so that each reinforcement can be kept horizontal or vertical to the base, and the construction progress is slow and labor is consumed.

SUMMERY OF THE UTILITY MODEL

The main object of the present invention is to provide a positioning and jointing structure capable of shortening the time required for jointing reinforcing bars.

To achieve the above object, the present invention provides two different forms according to different joining methods, and the first form of the positioning and joining structure of the reinforcing bar capable of infinitely extending and connecting of the present invention comprises a first joining member, a second joining member and a pin joint.

The first joint is formed by jointing a first steel bar section and a first pivoting section through friction compression joint, a first bulge is arranged at the joint of the first steel bar section and the first pivoting section, a first outer thread and a first fixing component screwed with the first outer thread are arranged on the first pivoting section, the first outer thread is a single thread, a double thread or a thread with more than two threads, and a first outer lead thread is arranged at the inlet end of the first outer thread.

The second joint is formed by jointing a second steel bar section and a second pivoting section through friction compression joint, a second protruding part is arranged at the joint of the second steel bar section and the second pivoting section, and a second outer thread is arranged on the second pivoting section, wherein the second outer thread is a single thread, a double thread or a thread with more than two threads, a second outer lead thread is arranged at the inlet end of the second outer thread, and the length of the second pivoting section is smaller than that of the first pivoting section.

The pin joint device is provided with a through hole, inner threads corresponding to the first outer threads and the second outer threads are arranged in the through hole, two ends of the pin joint device are respectively screwed with the first outer threads and the second outer threads, and one end of the pin joint device screwed with the first outer threads is attached to the first fixing component.

In addition, the second form of the present invention relates to a positioning and connecting structure of reinforcing bars capable of infinitely extending and connecting, comprising a first connecting member, a second connecting member and a pivot assembly.

The first joint is formed by jointing a first steel bar section and a first pivoting section through friction compression joint, a first bulge is arranged at the joint of the first steel bar section and the first pivoting section, a first outer thread and a first fixing component screwed with the first outer thread are arranged on the first pivoting section, and the first outer thread is a single thread, a double thread or a thread with more than two threads.

The second joint is formed by jointing a second steel bar section and a second pivoting section through friction compression joint, a second protruding part is arranged at the joint of the second steel bar section and the second pivoting section, a second outer thread and a second fixing component screwed with the second outer thread are arranged on the second pivoting section, and the second outer thread is a single thread, a double thread or a thread with more than two threads.

The pin joint component is provided with a plurality of positioning holes for inserting the first pin joint section and the second pin joint section, and an accommodating space communicated with the positioning holes and used for accommodating the first pin joint section and the second pin joint section, and the pin joint component enables the third fixing component to be screwed on the first pin joint section and the second pin joint section from the accommodating space, so that the first joint component and the second joint component are fixed on the pin joint component.

In summary, the utility model discloses but the positioning joint structure advantage of unlimited extension connection's reinforcing bar beam column, steel reinforcement cage or continuous wall lies in letting the constructor can accomplish the continuation of reinforcing bar or steel reinforcement cage or continuous wall in the short time and connect the operation.

Drawings

FIG. 1 is a first schematic view (I) of the present invention;

FIG. 2 is a schematic sectional view of a first embodiment of the present invention;

FIG. 3 is an exploded view of the first embodiment of the present invention;

FIG. 4A is a schematic view of a first embodiment of the present invention (II);

fig. 4B is a cross-sectional view of the hinge joint according to the first embodiment of the present invention;

FIG. 5 is a schematic view (III) of a first embodiment of the present invention;

fig. 6A is a schematic view (iv) of a first embodiment of the present invention;

fig. 6B is a schematic view (v) of a first embodiment of the present invention;

fig. 6C is a schematic view (six) of a first embodiment of the present invention;

fig. 7A is a schematic view (vii) of a first embodiment of the present invention;

fig. 7B is a schematic view (eight) of a first embodiment of the present invention;

fig. 8A is a schematic view (nine) of a first embodiment of the present invention;

fig. 8B is a schematic view (ten) of a first embodiment of the present invention;

FIG. 9 is a first embodiment of the present invention;

FIG. 10 is a schematic view (II) of a first embodiment of the present invention;

fig. 11 is a schematic diagram (one) illustrating a second embodiment of the present invention;

fig. 12 is an exploded view of a second embodiment of the present invention;

fig. 13 is a second schematic view (ii) according to the present invention;

fig. 14A is a schematic view (three) of a second embodiment of the present invention;

fig. 14B is a second schematic view (iv) according to the present invention;

FIG. 15 is a schematic diagram of a second embodiment of the present invention;

fig. 16 is a schematic diagram (ii) illustrating a second embodiment of the present invention;

fig. 17 is a schematic diagram (iii) of a second embodiment of the present invention;

fig. 18 is a schematic view (iv) of a second embodiment of the present invention.

In the figure:

1 positioning and jointing structure of steel bars capable of infinitely extending and connecting; 11 a first engaging member;

111 a first rebar segment; 112 a first pivot section; 1121 first outer screw thread; 1122 first outer lead tooth;

113 a first projection; 114 a first stationary component; 12 a second engaging member; 121 a second rebar segment;

122 a second pivot section; 1221 second outer thread; 1222 second outer conductor teeth; 123 a second projection;

124 a second securing assembly; 13 a pin joint; 131 through holes; 132 inner lead teeth; 14a pivoting member;

141 positioning holes; 142 an accommodating space; 143 a third stationary component; 2 shim.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 1 to 3, fig. 1 is a schematic view (a) of a first form of the present invention, fig. 2 is a schematic cross-sectional view (a) of the first form of the present invention, and fig. 3 is an exploded schematic view (a) of the first form of the present invention.

The utility model discloses produce two kinds of different forms according to the mode difference of joint, and the first form the utility model discloses but the location joint structure 1 of the reinforcing bar of unlimited extension connection includes first fastener 11, second fastener 12 and pin joint ware 13.

The first joint member 11 is formed by joining the first reinforcing bar segment 111 and the first pivot joint segment 112 by friction compression, a first protrusion 113 is formed at the joint of the first reinforcing bar section 111 and the first pivot joint section 112, the first pivot section 112 is provided with a first external screw 1121 and a first fixing component 114 screwed with the first external screw 1121, and the first external screw 1121 is a single-thread, double-thread or more than double-thread screw thread, the use of the double thread or more than the double thread can shorten the time required for screwing the first pin-jointed section 112 with other objects, and the inlet end of the first outer thread 1121 is provided with a first outer thread 1122, in addition, the first outer lead screw 1122 is machined to remove most of the crest of a section of screw thread at the inlet end of the first outer screw thread 1121, so that the first pivot joint section 112 can be screwed with other objects more easily.

The second joint member 12 is formed by joining the second reinforcing bar segment 121 and the second pivot segment 122 by friction compression, and a second protrusion 123 is formed at the joint of the second reinforcing bar segment 121 and the second pivot segment 122, and the second pin-jointed section 122 is provided with a second outer thread 1221, and the second outer thread 1221 adopts a single thread, a double thread or a thread with more than two threads, the use of the double thread or more than the double thread can shorten the time required for screwing the second pin-joint section 122 with other objects, and the inlet end of the second outer thread 1221 is provided with a second outer wire thread 1222, in addition, the second outer wire threading 1222 cuts most of the crest of a section of threading at the inlet end of the second outer threading 1221 by machining, so that the second pivot-connected section 122 is easier to screw with other objects, and the length of the second pivot-connected section 122 is smaller than that of the first pivot-connected section 112.

The pivot joint 13 has a through hole 131, and an inner screw corresponding to the first outer screw 1121 and the second outer screw 1221 is disposed in the through hole 131, two ends of the pivot joint 13 are respectively screwed with the first outer screw 1121 and the second outer screw 1221, and one end of the pivot joint 13 screwed with the first outer screw 1121 is attached to the first fixing component 114, and the first fixing component 114 is disposed to lock the pivot joint 13 to the first pivot section 112 and eliminate a gap between the pivot joint 13 and the first pivot section 112.

In addition, the first outer thread 1121 and the second outer thread 1221 are optimized to select a double-thread or multi-thread screw, the application of the multi-thread screw can improve the locking efficiency, taking the double-thread screw as an example, the opening angle of two threads is 180 degrees different to perform screw thread forming, the opening angle of three threads is 120 degrees different to perform screw thread forming, and so on, the opening angle of the double-thread screw is 360 degrees divided by the number of threads of the screw thread, so the advantage of screwing the multi-thread screw thread is that the locking lead is large and the screwing speed is fast, in addition, in the aspect of screwing speed, the speed of screwing the double-thread screw thread is about 2 times of that of a single-thread screw thread, namely, one rotation of the double-thread screw thread is equal to two rotations of the multi-thread screw thread, the speed of the three-thread screw thread is about 3 times of that of the single-thread screw thread, or one rotation of the three-thread is equal to 3 rotations of the single-thread screw thread, therefore, the design of the multi-thread screw can effectively improve the locking efficiency.

Referring to fig. 4A and fig. 4B in combination with fig. 3, fig. 4A is a schematic view (ii) of a first form of the present invention, and fig. 4B is a cross-sectional view of the pin joint device according to the first form of the present invention.

In addition, in the present invention, in addition to the first outer lead screw thread 1122 and the second outer lead screw thread 1222 arranged at the inlet ends of the first outer screw thread 1121 and the second outer screw thread 1221 as shown in fig. 3, the inner lead screw thread 132 may be arranged at both ends of the inner screw thread of the pin joint 13 as shown in fig. 4A and 4B, and the arrangement manner is also to cut most of peaks at both ends of the inner screw thread, so that the first pin joint section 112 and the second pin joint section 122 can be more easily inserted into the pin joint 13, therefore, in order to make the first pin joint section 112, the second pin joint section 122 and the pin joint 13 more easily screwed together, the first outer lead screw thread 1122 and the second outer lead screw thread 1222 may be arranged only at the inlet ends of the first outer screw thread 1121 and the second outer screw thread 1221, or the inner lead screw thread 132 may be arranged only at both ends of the inner screw thread of the pin joint 13, or the first outer lead screw 1122, the second outer lead screw 1222 and the inner lead screw 132 can be optionally arranged at the inlet ends of the first outer screw 1121 and the second outer screw 1221 and at the two ends of the inner screw of the pin joint 13.

Referring to fig. 5, fig. 5 is a schematic view (iii) of a first embodiment of the present invention.

In addition, the second pivot section 122 of the present invention may further include a second fixing element 124 screwed with the second outer thread 1221, so that after the pivot connector 13 is screwed with the first pivot section 112 and the second pivot section 122, both ends of the pivot connector are respectively attached to the first fixing element 114 and the second fixing element 124, and the first fixing element 114 and the second fixing element 124 are locked and attached to both ends of the pivot connector 13, thereby eliminating the gap between the pivot connector 13, the first pivot section 112 and the second pivot section 122.

Referring to fig. 6A, fig. 6B and fig. 6C, fig. 6A is a schematic diagram of a first form of the present invention (four), fig. 6B is a schematic diagram of a first form of the present invention (five), and fig. 6C is a schematic diagram of a first form of the present invention (six).

As shown in the drawings, the present invention is described herein with reference to the connection between the reinforcement cage and the reinforcement cage, and the connection between the reinforcement cage and the reinforcement cage is accomplished by screwing the first pivot joint section 112 and the second pivot joint section 122 (as shown in fig. 5) through the pivot joint 13, and locking the first fastening assembly 114 and attaching the first fastening assembly to the pivot joint 13, wherein the difference between fig. 6A and 6B is that each pivot joint 13 of fig. 6A is disposed on the same plane of the reinforcement cage, and each pivot joint 13 of fig. 6B is disposed on different planes of the reinforcement cage in a staggered manner, and the staggered arrangement of the pivot joints 13 on the pivot joint has the advantage of preventing the connection between the reinforcement cage and the reinforcement cage from being broken simultaneously when the reinforcement cage is impacted by an external force, and the difference between fig. 6B and 6C is that the reinforcement cage bends the bottom of the first joint 11 into an L shape to support the overall weight, while the reinforcement cage of figure 6C provides a support surface at the bottom of the first engagement member 11 to support the overall weight.

Referring to fig. 7A and 7B, fig. 7A is a schematic view (seventh) of the first form of the present invention, and fig. 7B is a schematic view (eighth) of the first form of the present invention.

As shown in the drawings, the present invention is described as applied to the connection between a reinforcing bar column and a reinforcing bar beam, and the connection between the reinforcing bar column and the reinforcing bar beam is also accomplished by screwing the first pivot joint section 112 and the second pivot joint section 122 (as shown in fig. 5) through the pivot joint 13, and locking the first fixing member 114 and attaching the first fixing member to the pivot joint 13, wherein fig. 7A and 7B are different in that each of the pivot joints 13 of fig. 7A is disposed on the same plane of the reinforcing bar beam, and the bottom of the reinforcing bar column is bent into an L shape to support the whole weight, the reinforcing bar beam is bent into an L shape at one end to be connected to the reinforcing bar column, and each of the pivot joints 13 of fig. 7B is alternately disposed on different planes of the reinforcing bar beam, and a supporting surface is provided at the bottom of the reinforcing bar column to support the whole weight, the reinforcing bar beam is provided with a supporting surface at one end to be connected to the reinforcing bar column, in addition, the pivot joint 13 is arranged in a staggered manner, so that the joint between the reinforcing steel bar column and the reinforcing steel bar beam can be prevented from being broken simultaneously when being impacted by external force.

Referring to fig. 8A and 8B, fig. 8A is a schematic view (nine) of a first form of the present invention, and fig. 8B is a schematic view (ten) of the first form of the present invention.

As shown in the drawings, the present invention is described as applied to the continuous wall to continuous wall connection, and the continuous wall to continuous wall connection is accomplished by screwing the first pin-jointed section 112 and the second pin-jointed section 122 through the pin-joint 13, locking the first fixing member 114 and attaching to the pin-joint 13, wherein fig. 8A and 8B are different in that each pin-joint 13 of fig. 8A is disposed on the same plane of the continuous wall, and each pin-joint 13 of fig. 8B is disposed on different planes of the continuous wall in a staggered manner, and the staggered arrangement of the pin-joint 13 has the advantage of preventing the continuous wall from being broken at the same time when the continuous wall is impacted by an external force.

The following detailed description of the first aspect of the present invention and the related drawings are provided: referring to fig. 9 and 10, fig. 9 is a first embodiment of the present invention (a), and fig. 10 is a second embodiment of the present invention (a).

The utility model is to fix and position the reinforcing steel bar beam column or the reinforcing steel bar cage or the continuous wall with the first joint part 11 in advance when proceeding the splicing engineering, then take out the pin joint 13 and screw in the first pin joint section 112 and screw in the bottom of the first pin joint section 112, align the second pin joint section 122 on the reinforcing steel bar or the reinforcing steel bar cage or the continuous wall to be used for splicing with the pin joint 13, screw out the pin joint 13 towards the direction of the second pin joint section 122, and make the pin joint 13 screw with the first pin joint section 112 and the second pin joint section 122 at the same time, finally eliminate the gap between the pin joint 13 and the first pin joint section 112 and the second pin joint section 122 by locking the first fixing component 114, and the number of teeth of the first pin joint section 112 and the second pin joint section 122 screw with the pin joint 13 is the same in the screw process, otherwise, the tensile strength of the first engaging member 11 and the second engaging member 12 may be uneven, which may cause damage to the building structure.

Referring to fig. 11 and 12, fig. 11 is a schematic view (a) of a second embodiment of the present invention, and fig. 12 is an exploded schematic view of the second embodiment of the present invention.

The second form of the present invention relates to a positioning and connecting structure 1 for reinforcing bars capable of infinitely extending and connecting, comprising a first engaging member 11, a second engaging member 12 and a pivot assembly 14.

The first joint 11 is formed by joining the first steel bar section 111 and the first pivot joint section 112 by friction compression, a first protrusion 113 is disposed at the joint of the first steel bar section 111 and the first pivot joint section 112, the first pivot joint section 112 is provided with a first outer screw 1121, a first fixing component 114 screwed with the first outer screw 1121, and a gasket 2, and the first outer screw 1121 adopts a single-thread, double-thread or more than double-thread screw, thereby shortening the time required for screwing the first pivot joint section 112 with other objects.

The second joint member 12 is formed by joining the second steel bar segment 121 and the second pivot joint segment 122 by friction compression, a second protrusion 123 is disposed at the joint of the second steel bar segment 121 and the second pivot joint segment 122, the second pivot joint segment 122 is provided with a second external screw thread 1221, a second fixing component 124 screwed with the second external screw thread 1221, and a gasket 2, in addition, the second external screw thread 1221 adopts a single line, a double line or more than two lines of screw threads, and the double line or more than two lines of screw threads can shorten the time required for screwing the second pivot joint segment 122 with other objects.

The pivot assembly 14 is provided with a plurality of positioning holes 141 into which the first pivot section 112 and the second pivot section 122 can be inserted, and an accommodating space 142 communicating with the positioning holes 141 and accommodating the first pivot section 112 and the second pivot section 122, wherein the pivot assembly 14 screws the third fixing assembly 143 onto the first pivot section 112 and the second pivot section 122 from the accommodating space 142, so that the first joint member 11 and the second joint member 12 are fixed to the pivot assembly 14.

Referring to fig. 13 in combination with fig. 12, fig. 13 is a second schematic view (ii) according to the present invention.

As shown in the drawings, the present invention is described as applied to the connection between the reinforcement cage and the reinforcement cage, and the connection between the reinforcement cage and the reinforcement cage is also accomplished by inserting the first pivot section 112 and the second pivot section 122 into the positioning hole 141 of the pivot assembly 14, screwing the third fixing assembly 143 to the first pivot section 112 and the second pivot section 122, and simultaneously screwing the first fixing assembly 114 and the second fixing assembly 124, so that the first joining member 11, the second joining member 12 and the pivot assembly 14 are combined.

Referring to fig. 14A and 14B in combination with fig. 12, fig. 14A is a schematic diagram (iii) of a second embodiment of the present invention, and fig. 14B is a schematic diagram (iv) of a second embodiment of the present invention.

As shown in the drawings, the present invention is described as applied to the connection between the continuous wall and the continuous wall, and the connection between the continuous wall and the continuous wall is also achieved by inserting the first pivot-connecting section 112 and the second pivot-connecting section 122 into the positioning hole 141 of the pivot-connecting component 14, and then combining the first engaging member 11, the second engaging member 12 and the pivot-connecting component 14 by screwing the third fixing component 143 into the first pivot-connecting section 112 and the second pivot-connecting section 122, and simultaneously screwing the first fixing component 114 and the second fixing component 124, wherein the difference between fig. 14A and fig. 14B is that the pivot-connecting components 14 of fig. 14A are disposed on the same plane of the continuous wall, and the pivot-connecting components 14 of fig. 14B are disposed on different planes of the continuous wall in a staggered manner, and the advantage of the staggered arrangement of the pivot-connecting components 14 is that when the continuous wall is impacted by an external force can be avoided, the continuous wall and the continuous joint between the continuous walls are simultaneously broken.

The following detailed description of embodiments of the second aspect of the present invention and related reference drawings are provided: referring to fig. 15 to 18, fig. 15 shows an implementation of the second embodiment of the present invention in a first mode, fig. 16 shows an implementation of the second embodiment of the present invention in a second mode (in a second mode), fig. 17 shows an implementation of the second embodiment of the present invention in a third mode, and fig. 18 shows an implementation of the second embodiment of the present invention in a fourth mode.

The utility model is characterized in that the steel bar or the steel bar cage or the continuous wall with the first joint component 11 is fixed to the position in advance when the splicing process is carried out, then the first fixing component 114 and the gasket 2 are arranged on the first pivoting section 112, then the pivoting component 14 is taken out and the positioning hole 141 is aligned with the first pivoting section 112, then the pivoting component 14 is inserted into the first joint component 11, the third fixing component 143 and the gasket 2 are arranged on the first pivoting section 112, then the first fixing component 114 and the third fixing component 143 are respectively screwed, and the first joint component 11 is combined with the pivoting component 14, in addition, if more than two third fixing components 143 are used in the screwing process, the torque value locked by each third fixing component 143 must be the same, if the torque values locked by each third fixing component 143 are different, when the building structure is impacted by a large external force, the external force is preferentially transmitted to the third fixing component 143 with the lowest torsion value, and the third fixing component 143 with the lowest torsion value is broken when the external force is not loaded, so that the loads of other third fixing components 143 are increased, and the third fixing components 143 are broken after the torsion force born by the other third fixing components also exceeds the upper limit, thereby causing damage to the safety structure of the whole building.

Next, after the second fixing assembly 124 and the spacer 2 are disposed on the second pivot section 122, the second joint member 12 is inserted into the positioning hole 141 (as shown in fig. 15), after the second joint member 12 is inserted, the third fixing assembly 143 and the spacer 2 are disposed on the second pivot section 122, and then the second fixing assembly 124 and the third fixing assembly 143 are locked, respectively, so that the connection of the reinforcement bar or the reinforcement cage or the continuous wall is completed after the second joint member 12 is joined to the pivot assembly 14, and if two or more third fixing assemblies 143 are used in the screwing process, the torque value locked by each third fixing assembly 143 must be the same.

In summary, the utility model discloses but the advantage of the positioning connection structure of the reinforcing bar of unlimited extension connection lies in letting the constructor can accomplish the continuation of reinforcing bar or steel reinforcement cage or continuous wall in the short time and connect the operation.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. A positioning and jointing structure of reinforcing steel bars capable of being infinitely extended and connected is characterized by comprising a first jointing part, a second jointing part and a pin joint device;

the first joint is formed by jointing a first steel bar section and a first pivoting section through friction compression joint, a first bulge is arranged at the joint of the first steel bar section and the first pivoting section, a first outer thread and a first fixing component screwed with the first outer thread are arranged on the first pivoting section, and the first outer thread is a single thread, a double thread or a thread with more than two threads;

the second joint is formed by jointing a second steel bar section and a second pivoting section through friction compression joint, a second protruding part is arranged at the joint of the second steel bar section and the second pivoting section, a second outer thread is arranged on the second pivoting section, the second outer thread is a single thread, a double thread or a thread with more than two threads, and the length of the second pivoting section is smaller than that of the first pivoting section;

2. The positioning and coupling structure of infinitely extendable reinforcing bars according to claim 1, wherein the second pivot section is provided with a second fixing member screwed with the second outer thread.

3. A locating engagement formation for reinforcing bars that can be infinitely extended connected according to claim 2, wherein the second fixing element engages the pivot joint.

4. A positive engagement formation for an infinitely extendable connective bar as in claim 1, wherein the inlet end of the first outer thread is provided with a first outer lead thread.

5. A positive engagement structure for reinforcing bars with infinite extension coupling according to claim 1, wherein the inlet end of the second outer thread is provided with a second outer lead thread.

6. The positioning-coupling structure of infinitely extendable-connectable reinforcing bars according to claim 1, wherein the pin joint is provided with inner lead threads at both ends of the inner thread.

7. A positioning joint structure of a reinforcing steel bar capable of being infinitely extended and connected is characterized by comprising a first joint part, a second joint part and a pin joint component;

the first joint is formed by jointing a first steel bar section and a first pivoting section through friction compression joint, a first bulge is arranged at the joint of the first steel bar section and the first pivoting section, a first outer thread and a first fixing component screwed with the first outer thread are arranged on the first pivoting section, and the first outer thread is a single-thread, double-thread or more than double-thread;

the second joint is formed by jointing a second steel bar section and a second pivoting section through friction compression joint, a second bulge is arranged at the joint of the second steel bar section and the second pivoting section, a second outer thread and a second fixing component screwed with the second outer thread are arranged on the second pivoting section, and the second outer thread is a single thread, a double thread or a thread with more than two threads;

the pin joint assembly is provided with a plurality of positioning holes for inserting the first pin joint section and the second pin joint section, and an accommodating space communicated with the positioning holes and used for accommodating the first pin joint section and the second pin joint section, and the pin joint assembly enables the third fixing assembly to be screwed on the first pin joint section and the second pin joint section from the accommodating space, so that the first joint piece and the second joint piece are fixed on the pin joint assembly.

8. The positioning-coupling structure of infinitely extendable connecting reinforcing bars according to claim 7, wherein the number of the third fixing members is more than one.

9. A positive engagement formation for a reinforcing bar of an infinitely extendable connection as claimed in claim 7, wherein the first pivoted section is provided with a spacer.

10. A positive engagement formation for a reinforcing bar of an infinitely extendable connection as claimed in claim 7, wherein the second pivoted section is provided with a spacer.