阅读说明：本技术 一种钢筋连接结构 (Steel bar connecting structure ) 是由 顾东东 于 2021-08-27 设计创作，主要内容包括：本发明公开了一种钢筋连接结构,用连接两段钢筋,包括置于预制混凝土内的第一基套和置于现浇混凝土内的第二基套,所述第一基套内依次设置有第一调节垫、弹簧、第二调节垫、卡套以及锁止套,所述第一调节垫上固定有第一连接体,所述第二基套内固定有与所述第一连接体插接的第二连接体；本发明能够实现两段混凝土柱之间钢筋的有效连接,进而避免焊接方式存在的固定缺陷,大大提高了连接强度,并且操作也简单方便。(The invention discloses a steel bar connecting structure, which is used for connecting two sections of steel bars and comprises a first base sleeve and a second base sleeve, wherein the first base sleeve is arranged in precast concrete, the second base sleeve is arranged in cast-in-place concrete, a first adjusting pad, a spring, a second adjusting pad, a clamping sleeve and a locking sleeve are sequentially arranged in the first base sleeve, a first connecting body is fixed on the first adjusting pad, and a second connecting body which is spliced with the first connecting body is fixed in the second base sleeve; the invention can realize the effective connection of the reinforcing steel bars between two sections of concrete columns, thereby avoiding the fixing defect existing in the welding mode, greatly improving the connection strength and having simple and convenient operation.)

1. A steel bar connecting structure is used for connecting two sections of steel bars and is characterized by comprising a first base sleeve and a second base sleeve, wherein the first base sleeve is arranged in precast concrete, the second base sleeve is arranged in cast-in-place concrete, a first adjusting pad, a spring, a second adjusting pad, a clamping sleeve and a locking sleeve are sequentially arranged in the first base sleeve, a first connecting body is fixed on the first adjusting pad, and a second connecting body which is spliced with the first connecting body is fixed in the second base sleeve;

the inner wall of the first base sleeve is of a stepped structure, the first adjusting pad is abutted against the step of the first base sleeve, the end part of one section of steel bar is fixed with the first adjusting pad, the two ends of the spring are abutted against the first adjusting pad and the second adjusting pad respectively, and the second adjusting pad can freely move in the first base sleeve;

the clamping sleeve is positioned between the second adjusting pad and the locking sleeve, the locking sleeve is in threaded connection with the first base sleeve, and the clamping sleeve is abutted against the locking sleeve through the second adjusting pad; the clamping sleeve consists of a plurality of arc-shaped sleeves, and the arc-shaped sleeves can be combined into a complete hollow cylinder; the surfaces of the clamping sleeve and the locking sleeve which are close to each other are inclined surfaces, and the inclination angle of the inclined surface of the clamping sleeve is larger than that of the inclined surface of the locking sleeve;

a circular limiting groove is formed in the surface, close to the clamping sleeve, of the second adjusting pad, and the outer diameter of the limiting groove is the same as that of the clamping sleeve;

a circle of flange is arranged on the outer wall of one end, away from the second base sleeve, of the second connecting body, and the maximum outer diameter of the flange is larger than the inner diameter of the clamping sleeve;

when the second connector body penetrates into the ferrule, the ferrule has at least a first position and a second position; when the cutting sleeve is located at the first position, the cutting sleeve abuts against the inclined surface of the locking sleeve, and the cutting sleeve is located outside the limiting groove; when the cutting sleeve is located at the second position, the cutting sleeve abuts against the inclined surface of the locking sleeve, the cutting sleeve is located in the limiting groove, the inner wall of the cutting sleeve abuts against the second connector, and the maximum outer diameter of the flange is located outside the cutting sleeve.

2. A reinforcing bar connecting structure as set forth in claim 1, wherein a blind hole into which said first connecting body is inserted is opened at one end of said second connecting body having a flange, and an outer diameter of said first connecting body is the same as an inner diameter of said blind hole;

a circle of ring grooves are formed in the inner wall of each blind hole, convex rings matched with the ring grooves are arranged on the outer wall of the corresponding first connecting body, a plurality of notches which are uniformly distributed along the circumferential direction are formed in the circumferential side of each blind hole, and the notches extend to the bottom of each blind hole; when the cutting sleeve is at the second position, the convex ring is tightly propped in the ring groove.

3. A reinforcing bar coupler according to claim 2, wherein said first coupler body is screw-coupled to said first locking collar, and said ring groove is formed at a middle portion of said blind hole.

4. A reinforcing bar connecting structure according to claim 1, wherein the reinforcing bars in the precast concrete and the first connecting body are fixed to the first adjusting pad by a first locking sleeve, and the first adjusting pad is screwed with the first base sleeve and abuts against the step of the first base sleeve;

and the steel bar positioned in the cast-in-place concrete is fixed in the second base sleeve through a second locking sleeve and is abutted against the second connecting body.

5. A reinforcing bar connecting structure according to claim 1, wherein a support ring is further provided in the first base sleeve, the support ring being nested in the first connecting body;

when one end of the second connecting body, which is provided with the flange, does not penetrate into the locking sleeve, the outer wall of the support ring abuts against the inner wall of the clamping sleeve, the clamping sleeve is positioned outside the limiting groove, and the clamping sleeve abuts against the inclined surface of the locking sleeve; when the end of the second connector having the flange penetrates into the locking sleeve and the ferrule is in the second position, the support ring is positioned outside the ferrule.

6. A reinforcing bar connecting structure according to claim 5, wherein said support ring is interference fitted with said connecting body.

7. A reinforcing bar coupler according to claim 1, wherein an anti-corrosive glue is poured into both the first and second base sleeves.

Technical Field

The invention relates to the technical field of concrete pile connection, in particular to a steel bar connecting structure.

Background

With the continuous development of fabricated buildings, prefabricated components such as prefabricated concrete plates, concrete piles and the like are widely used; for the precast pile, in the actual use process, the connection part between the piles is often damaged, if the strength is not enough, the pile is easy to break,

when the concrete pile needs to be extended, a steel bar needs to be connected onto the concrete pile again, in the prior art, the concrete pile is usually fixed in a welding mode, but certain defects exist in welding, such as welding defects, corrosion and the like, and the concrete pile is easy to break at the welding position.

Disclosure of Invention

Aiming at the technical defects, the invention aims to provide a steel bar connecting structure which can realize the effective connection of steel bars between two sections of concrete columns, further avoid the fixing defect of a welding mode, greatly improve the connecting strength and is simple and convenient to operate.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention provides a steel bar connecting structure, which is used for connecting two sections of steel bars and is characterized by comprising a first base sleeve and a second base sleeve, wherein the first base sleeve is arranged in precast concrete, the second base sleeve is arranged in cast-in-place concrete, a first adjusting pad, a spring, a second adjusting pad, a clamping sleeve and a locking sleeve are sequentially arranged in the first base sleeve, a first connecting body is fixed on the first adjusting pad, and a second connecting body which is spliced with the first connecting body is fixed in the second base sleeve;

the inner wall of the first base sleeve is of a stepped structure, the first adjusting pad is abutted against the step of the first base sleeve, the end part of one section of steel bar is fixed with the first adjusting pad, the two ends of the spring are abutted against the first adjusting pad and the second adjusting pad respectively, and the second adjusting pad can freely move in the first base sleeve;

the clamping sleeve is positioned between the second adjusting pad and the locking sleeve, the locking sleeve is in threaded connection with the first base sleeve, and the clamping sleeve is abutted against the locking sleeve through the second adjusting pad; the clamping sleeve consists of a plurality of arc-shaped sleeves, and the arc-shaped sleeves can be combined into a complete hollow cylinder; the surfaces of the clamping sleeve and the locking sleeve which are close to each other are inclined surfaces, and the inclination angle of the inclined surface of the clamping sleeve is larger than that of the inclined surface of the locking sleeve;

a circular limiting groove is formed in the surface, close to the clamping sleeve, of the second adjusting pad, and the outer diameter of the limiting groove is the same as that of the clamping sleeve;

a circle of flange is arranged on the outer wall of one end, away from the second base sleeve, of the second connecting body, and the maximum outer diameter of the flange is larger than the inner diameter of the clamping sleeve;

when the second connector body penetrates into the ferrule, the ferrule has at least a first position and a second position; when the cutting sleeve is located at the first position, the cutting sleeve abuts against the inclined surface of the locking sleeve, and the cutting sleeve is located outside the limiting groove; when the cutting sleeve is located at the second position, the cutting sleeve abuts against the inclined surface of the locking sleeve, the cutting sleeve is located in the limiting groove, the inner wall of the cutting sleeve abuts against the second connector, and the maximum outer diameter of the flange is located outside the cutting sleeve.

Preferably, one end of the second connecting body, which is provided with a flange, is provided with a blind hole into which the first connecting body is inserted, and the outer diameter of the first connecting body is the same as the inner diameter of the blind hole;

a circle of ring grooves are formed in the inner wall of each blind hole, convex rings matched with the ring grooves are arranged on the outer wall of the corresponding first connecting body, a plurality of notches which are uniformly distributed along the circumferential direction are formed in the circumferential side of each blind hole, and the notches extend to the bottom of each blind hole; when the cutting sleeve is at the second position, the convex ring is tightly propped in the ring groove.

Preferably, the first connecting body is in threaded connection with the first locking sleeve, and the annular groove is located in the middle of the blind hole.

Preferably, the steel bar in the precast concrete and the first connecting body are fixed on the first adjusting pad through a first locking sleeve, and the first adjusting pad is in threaded connection with the first base sleeve and abuts against a step of the first base sleeve;

and the steel bar positioned in the cast-in-place concrete is fixed in the second base sleeve through a second locking sleeve and is abutted against the second connecting body.

Preferably, a support ring is further arranged in the first base sleeve, and the support ring is nested on the first connecting body;

when one end of the second connecting body, which is provided with the flange, does not penetrate into the locking sleeve, the outer wall of the support ring abuts against the inner wall of the clamping sleeve, the clamping sleeve is positioned outside the limiting groove, and the clamping sleeve abuts against the inclined surface of the locking sleeve; when the end of the second connector having the flange penetrates into the locking sleeve and the ferrule is in the second position, the support ring is positioned outside the ferrule.

Preferably, the support ring is an interference fit with the connector.

Preferably, the first base sleeve and the second base sleeve are both poured with anti-corrosion glue.

The invention has the beneficial effects that:

according to the invention, through the interaction among the parts such as the locking sleeve, the clamping sleeve and the adjusting pad, the two steel bars can be spliced in the base sleeve and effectively connected, so that the two steel bars can be spliced only through splicing, the connection requirement is met, and the working strength in later construction is greatly reduced;

utilize the interact between spare parts such as locking cover, cutting ferrule and adjusting pad simultaneously, realize the butt joint back as two reinforcing bars, utilize the cooperation of cutting ferrule and spacing groove for the degree of freedom of the radial expansion of cutting ferrule receives the restriction, and then when the reinforcing bar produces the axial displacement trend, the cutting ferrule can restrict this kind of trend, and then makes two rod iron two degrees of freedom in the axial obtain the restriction, and then can not lead to the reinforcing bar to sink when making follow-up concreting.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view (a first position) of a reinforcing bar connection structure according to an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic structural view of a second linker;

FIG. 4 is a cross-sectional view of FIG. 3;

fig. 5 is a schematic structural view of the ferrule;

fig. 6 is a schematic structural view (a second position) of a reinforcing bar connection structure according to an embodiment of the present invention;

fig. 7 is a schematic structural view of the first foundation sleeve and precast concrete.

Description of reference numerals:

01-a first base sleeve, 02-a base station, 03-a first locking sleeve, 04-a second base sleeve, 05-a second locking sleeve, 06-precast concrete, 07-cast-in-place concrete, 08-a steel bar, 1-a locking sleeve, 2-a first adjusting pad, 3-a second adjusting pad, 4-a cutting sleeve, 41-an arc sleeve, 5-a first connecting body, 6-a support ring, 7-a spring, 8-a second connecting body, 81-a blind hole, 811-a circular groove, 812-a notch and 82-a flange.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1, the present invention provides a reinforcing bar connecting structure for connecting two sections of reinforcing bars 08, that is, one section of reinforcing bar 08 is located in precast concrete 06, and when the reinforcing bar 08 needs to be extended thereon, it is necessary to externally connect the reinforcing bar 08, thereby reproducing cast concrete, and realizing connection and extension, so that the reinforcing bar connecting structure includes a first base housing 01 placed in the precast concrete 06 and a second base housing 04 placed in the cast-in-place concrete 07;

a first adjusting pad 2, a spring 7, a second adjusting pad 3, a clamping sleeve 4 and a locking sleeve 1 are sequentially arranged in the first base sleeve 01, a first connecting body 5 is fixed on the first adjusting pad 2, and a second connecting body 8 which is spliced with the first connecting body 5 is fixed in the second base sleeve 04;

the inner wall of the first base sleeve 01 is of a stepped structure, the first adjusting pad 2 is abutted against the step of the first base sleeve 01, the end part of one section of the steel bar 08 is fixed with the first adjusting pad 2, and then the displacement of the first adjusting pad 2 in one axial direction (namely the-z direction in the figure 1) is limited, so that the section of the steel bar 08 is limited in the-z direction; two ends of the spring 7 are respectively abutted against the first adjusting pad 2 and the second adjusting pad 3, and the second adjusting pad 3 can freely move in the first base sleeve 01, so that the clamping sleeve 4 can also move to form clamping connection;

the cutting sleeve 4 is positioned between the second adjusting pad 3 and the locking sleeve 1, the locking sleeve 1 is in threaded connection with the first base sleeve 01, as shown in fig. 1, when the locking sleeve 1 is in threaded connection with the first base sleeve 01, a step is arranged at the connection position of the locking sleeve 1, and the screwing-in distance of the locking sleeve 1 is further limited, so that the screwing-in position of the locking sleeve 1 is ensured; the same manner is also adopted for the second connecting body 8 in the second base sleeve, namely the second connecting body 8 is screwed into the second base sleeve 04 through threads, and a step is arranged on the second connecting body 8 and further tightly propped against the second base sleeve 04, so that the screwed-in position of the second connecting body 8 is ensured; the cutting sleeve 4 is tightly propped against the locking sleeve 1 through a second adjusting pad 3;

in order to realize the clamping of the ferrule 4, as shown in fig. 5, the ferrule 4 is composed of a plurality of arc-shaped sleeves, that is, the ferrule 4 can be expanded and contracted due to the arrangement of the ferrule 4, and then the locking effect is generated under the action of the spring 7, and the arc-shaped sleeves 41 can be combined into a complete hollow cylinder, that is, the ferrule 4 is a cylinder and then is divided into a plurality of parts; the surfaces of the cutting sleeve 4 close to the locking sleeve 1 are inclined planes (as shown in the thickened part in fig. 2), the inclined angle of the inclined plane of the cutting sleeve 4 is larger than that of the inclined plane of the locking sleeve (as shown in fig. 2), and the cutting sleeve 4 can move radially under the action of the spring 7 due to the arrangement of the inclined planes, so that the second connecting body 8 can be locked;

further, in order to ensure the locking, a circular limiting groove is formed in the surface, close to the cutting sleeve 4, of the second adjusting pad 3, and the outer diameter of the limiting groove is the same as that of the cutting sleeve 4; a circle of flange 82 is arranged on the outer wall of one end of the second connecting body 8, the maximum outer diameter of the flange 82 is larger than the inner diameter of the cutting sleeve 4, so that an externally-connected steel bar 08 (namely, the steel bar 08 at the upper part in the figure 1) can be fixed in the second base sleeve 04 through the action of the second locking sleeve 05 and the second connecting body 8, namely, as shown in the figure 1, the second locking sleeve 05 tightly presses the steel bar 08 against the second connecting body 8, and the steel bar 08 and the second connecting body 8 are further effectively connected;

when the second connector 8 penetrates the ferrule 4, the ferrule 4 has at least a first position and a second position; when the cutting ferrule 4 is at the first position (as shown in fig. 6), the cutting ferrule 4 abuts against the inclined surface of the locking sleeve 1, and the cutting ferrule 4 is located outside the limiting groove; when the cutting sleeve 4 is in the second position (as shown in fig. 1), the cutting sleeve 4 abuts against the inclined surface of the locking sleeve 1, the cutting sleeve 4 is located in the limiting groove, the inner wall of the cutting sleeve 4 abuts against the second connecting body 8, and the maximum outer diameter of the flange 82 is located outside the cutting sleeve 4;

as shown in fig. 1, the cutting ferrule 4 is schematically shown in the second position, the cutting ferrule 4 is located in the limiting groove at this time, and when the second connector 8 above is to be detached, the flange 82 on the cutting ferrule 4 will prop open the cutting ferrule 4, so that the cutting ferrule 4 generates radial displacement, but due to the existence of the limiting groove, the cutting ferrule 4 cannot generate radial displacement, so that the second connector 8 above at this time cannot be detached, that is, the + z direction is limited; however, the z-direction is not limited, for which purpose a first connecting body 5 is introduced into the locking sleeve 1, namely:

one end of the first connecting body 5 is fixed with the first adjusting pad 2, and the fixing is realized through the first locking sleeve 03, that is, as shown in fig. 1, the first locking sleeve 03 is in threaded connection with the first connecting body 5, the first locking sleeve 03 is in threaded connection with the first adjusting pad 2, and then the reinforcing steel bar 08 is also fixed in the first locking sleeve 03; the other end of the first connecting body 5 is inserted on the second connecting body 8; one end of the second connecting body 8, which is provided with the flange 82, is provided with a blind hole 81 into which the first connecting body 5 is inserted, and the outer diameter of the first connecting body 5 is the same as the inner diameter of the blind hole 81; a circle of ring groove 811 is formed on the inner wall of the blind hole 81, a convex ring matched with the ring groove 811 is arranged on the outer wall of the corresponding first connecting body 5, the convex ring is positioned at the end part of the first connecting body 5 far away from the first adjusting cushion 2, a plurality of notches 812 (shown in fig. 3) which are uniformly distributed along the circumferential direction are formed on the circumferential side of the blind hole 81, the notches 812 extend to the bottom of the blind hole 81, the outer wall of the blind hole 81 can expand and contract due to the arrangement of the notches 812, and the ring groove 811 is positioned in the middle of the first blind hole 81 in order to improve the expansion and contraction effect; when the cutting sleeve 4 is at the second position, the convex ring is tightly propped in the annular groove 811;

it can be seen that when the second connector 8 above wants to further move in the-z direction, the convex ring at this time will be separated from the ring groove 811, and further prop open the blind hole 81, and the blind hole 81 is propped open, which will cause the ferrule 4 to generate radial displacement, but because of the existence of the limiting groove, the ferrule 4 cannot generate radial displacement, so that the displacement in the-z direction is also limited, that is, finally, the second connector 8 is limited in two axial directions + z and-z, and two sections of steel bars 08 are also in contact connection through the first connector 5 and the second connector 8, so that the offset of the steel bars 08 on the axis is also ensured, and finally, the connection strength is ensured;

in order to cooperate with the insertion of the second connecting body 8 and the retention of the position of the ferrule 4, as shown in fig. 6, a support ring 6 is further provided in the base sleeve 01, and the support ring 6 is nested on the connecting body 5; when one end of the second connector 8 with the flange 82 does not penetrate into the locking sleeve 1, the outer wall of the support ring 6 abuts against the inner wall of the clamping sleeve 4, the clamping sleeve 4 is positioned outside the limiting groove, and the clamping sleeve 4 abuts against the inclined surface of the locking sleeve 1; when the end of the second connecting body 8 with the flange 82 penetrates into the locking sleeve 1 and the ferrule 4 is in the second position, the support ring 6 is located outside the ferrule 4;

namely, the supporting ring 6 is used for ensuring that the cutting sleeve 4 cannot be pushed into the limiting groove in advance, so that the second connector 8 above can smoothly enter the cutting sleeve 4, and then after the supporting ring 6 is pushed off by the second connector 8 above, the cutting sleeve 4 can be attached to the second connector 8 and enter the limiting groove to realize clamping; in order to ensure that the cutting sleeve 4 can be well contacted with the support ring 6, the support ring 6 can be made of a magnetic material, so that the cutting sleeve 4 is adsorbed on the periphery of the support ring 6;

for how the support ring 6 hovers over the first connecting body 5, an interference fit manner may be adopted so that the support ring 6 hovers over the first connecting body 5, or other manners may be adopted, for example, fixing by using an adhesive with low strength, but it should be noted that the force that damages the sliding of the support ring 6 on the first connecting body 5 cannot cause the spring 7 to generate large deformation, that is, when the support ring 6 is pushed away, the spring 7 does not generate deformation or generates a slight amount of deformation.

Further, in order to prevent corrosion and oxidation, an anti-corrosive glue, such as epoxy resin, may be poured into the first base sleeve 01 and the second base sleeve 05.

In addition, it should be noted that the connection structure needs to be calculated in size during actual manufacturing, that is, two position diagrams of fig. 1 and 6 need to be satisfied, so that the ferrule 4 can just enter the second position, and the application does not limit the specific size, and in practice, the specific arrangement can be performed with reference to fig. 1 and 6.

When the prefabricated adjusting pad is used, firstly, a lower steel bar 08, a first locking sleeve 03 and a first adjusting pad 2 in the picture 1 are fixed and penetrate into a first base sleeve 01 in a prefabricated mode, in order to prevent the first adjusting pad 2 from being separated from the first base sleeve 01, the first adjusting pad 2 and the inner wall of the first base sleeve 01 can be fixed in a threaded mode, then the first base sleeve 01 and the lower steel bar 08 are prefabricated in concrete, and the lower steel bar 08, the first base sleeve 01 and the concrete are fixed to form a prefabricated pile; then the spring 7 and the second adjusting pad 2 are placed in the first base sleeve 01, the first connecting body 5 is fixed on the first locking sleeve 03, the support ring 6 is fixed on the first connecting body 5 in advance, then the cutting sleeve 4 is placed, the cutting sleeve 4 is adsorbed around the support ring 6, thereby preventing the cutting sleeve 4 from entering the limiting groove, then screwing in the locking sleeve 1 to enable the cutting sleeve 4 to be tightly propped against the inclined surface of the locking sleeve 1, finally, after the second connecting body 8 is inserted into the upper part, the second connecting body 8 can push the support ring 6 to move downwards, so that the restriction of the cutting sleeve 4 is released, and the cutting sleeve is radially contracted and attached on the second connecting body 8 under the action of the spring 7 and the inclined plane, and enters the limit groove to realize locking, so that the second connecting body 8 realizes effective connection, the upper reinforcing bars 08 fixed to the second connecting body 8 are exposed, and at this time, the subsequent concrete casting can be performed.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.