CN209975513U

CN209975513U - Double-end connecting piece and prefabricated part butt joint structure

Info

Publication number: CN209975513U
Application number: CN201920433085.0U
Authority: CN
Inventors: 周兆弟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2020-01-21
Anticipated expiration: 2029-04-02

Abstract

The utility model provides a double-end connecting piece, it includes middle connecting rod and symmetry or basic symmetric distribution in the bayonet joint at middle connecting rod both ends, middle connecting rod do not is equipped with to the inboard sunken locked groove of extending with bayonet joint transition linking position punishment. The technical scheme solves the technical problems of complicated production and processing technology and procedure, low production efficiency and high processing cost in the prior art. Additionally, the utility model also provides a butt joint structure of prefabricated component based on above-mentioned double-end connecting piece, it realizes that the double-end is pegged graft for the prefabricated component butt joint is efficient, the connection effect is good, and can effectively reduction in production cost, improve production machining efficiency.

Description

Double-end connecting piece and prefabricated part butt joint structure

Technical Field

The utility model relates to a building technical field, concretely relates to double-end connecting piece and prefabricated component's butt-joint structural.

Background

In the technical field of buildings, the construction method relates to prefabricated parts, and if connecting pieces are needed to be adopted in the butt joint process of the prefabricated prestressed concrete piles, the general structure of the traditional connecting pieces is as follows: one end of the connecting piece is a threaded structure, the other end of the connecting piece is a splicing ball head structure, a large nut and a small nut are embedded in the end faces of the adjacent butted prefabricated parts correspondingly, the threaded structure of the connecting piece is in threaded connection and fixation with the small nut, a middle nut is arranged in the large nut, a spring, a base pad and a lock cylinder supported on the base pad are arranged between the middle nut and the inner cavity of the large nut, the splicing ball head of the connecting piece is inserted into the middle nut, and the connecting piece is locked through the lock cylinder to form reliable connection and fixation, and the principle of the connecting piece can refer to the prior application of the applicant of CN201510312502.2, CN 201010298442.0.

Therefore, in the actual production process, the large nut and the small nut need to be produced and manufactured respectively, and the two end parts of the connecting piece need to be processed differently, so that the production and processing technology and procedures are complicated, the production efficiency is low, and the processing cost is high.

SUMMERY OF THE UTILITY MODEL

A first object of the utility model is to provide a double-end connecting piece, it is numerous and diverse to solve production and processing technology, procedure among the prior art, and production efficiency is low, the technical problem with high processing cost moreover.

The utility model provides a pair of double-end connecting piece, it includes intermediate junction pole and symmetry or basic symmetric distribution in the bayonet joint at intermediate junction pole both ends, intermediate junction pole with the punishment of bayonet joint transition linking position do not is equipped with to the inboard sunken locked groove of extending.

Furthermore, the locked groove includes the depressed part that links up with the bayonet joint mutually, the other end of depressed part link up connect in the terminal surface of intermediate junction pole to with the terminal surface outer edge cooperation of intermediate junction pole forms spacing portion.

Furthermore, the end parts of the plug connectors are respectively provided with a positioning tool hole suitable for positioning and machining.

Furthermore, an anti-pulling section is arranged between the end part of the plug connector and the locking groove, and the outer diameter of the anti-pulling section gradually narrows from the end part of the plug connector to the locking groove to form an anti-pulling surface which is suitable for being matched with the internal lock cylinder surface of the double-end connecting piece.

Furthermore, multistage tensile steps are arranged on the anti-pulling surface, and multistage sawteeth are arranged on the contact surface of the lock cylinder corresponding to the lock cylinder.

Furthermore, the lock core is supported on the base pad of the lock core under the elastic supporting action of the elastic piece, and forms an inclined support with the inner inclined plane of the middle locking block of the double-head connecting piece when the lock core is in locking fit with the locking groove.

Furthermore, an included angle alpha is formed between the upper end face of the lock cylinder and the inner inclined face adjacent to the upper end face, and alpha is larger than or equal to 0 and smaller than or equal to 20 degrees.

Furthermore, the center of the base pad is provided with a jack corresponding to the plug connector, the plug connector comprises an insertion part suitable for being inserted into the jack and a lead-in part connected with the pulling-resistant section, and the inner diameter of the jack is at least larger than or equal to the outer diameter of the insertion part.

Furthermore, the middle part of the middle connecting rod is also provided with a blocking table suitable for inserting stop positions, and the blocking table extends outwards to protrude and is suitable for abutting against the outer end face of the middle locking block of the double-end connecting piece.

Compared with the prior art, the utility model discloses double-end connecting piece's beneficial effect is:

according to the technical scheme, a traditional connecting piece structure is changed, one-end threads and one-end inserting structures in the prior art are changed into double-end inserting structures, and inserting connectors located at two ends of a middle connecting rod are symmetrically or basically symmetrically distributed, so that the shapes and the sizes of the inserting connectors at the two ends are consistent or basically consistent, on one hand, machining procedures at the two ends are at least basically the same in the machining process of the connecting piece, different machining procedures can be reduced, the operation of the machining procedures is simplified and facilitated, the machining cost is reduced, synchronous machining of the two ends can be realized, and the machining efficiency is improved; on the other hand, because the shapes and the sizes of the plug connectors at the two ends are consistent or basically consistent, the large and the small nuts in the traditional connecting structure can be changed into the connecting nuts with the uniform size, the same batch production of the connecting nuts is realized, the investment of processing procedures and processing equipment is reduced, the production efficiency is improved, and the production and processing cost is reduced.

Another object of the utility model is to provide a prefabricated component's butt joint structure based on above-mentioned double-end connecting piece, it realizes that the double-end is pegged graft, has replaced the installation that current connecting piece one end need revolve wrong for prefabricated component butt joint is efficient, the connection effect is good, and can effectively reduction in production cost and improvement production machining efficiency.

The utility model provides a pair of prefabricated component's butt joint structure, including pre-buried in the coupling nut of prefabricated component tip, and as aforesaid arbitrary double-end connector, double-end connector's middle latch segment fixed connection in coupling nut to and be equipped with elastic component and base pad between the coupling nut, and the lock core, in the prefabricated component of adjacent butt joint coupling nut and middle latch segment and lock core size are unanimous, the double-end connector both ends the bayonet joint inserts respectively middle latch segment passes the lock core, the lock core under the elasticity supporting action in locked groove department forms the lock and connects.

Compared with the prior art, the utility model discloses prefabricated component's butt-joint structural's beneficial effect is:

connecting nut in the prefabricated component of adjacent butt joint among this technical scheme, middle latch segment and lock core size are unanimous respectively, all can conveniently realize with batch production, need not again because of big, the different batch production that divides of little, and processing, the transportation, and subsequent installation uses just a lot of, the latch segment passes the lock core in the middle of inserting respectively to the bayonet joint at double-end connecting piece both ends, the lock core forms the lock joint in locked groove department under the elasticity supporting role, so realize the double-end grafting, excellent in connection effect, and can effectively reduce manufacturing cost and improve production machining efficiency.

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

FIG. 1 is a schematic view of a double-ended connector according to an embodiment of the present invention;

FIG. 2 is a schematic view of a connection structure of a double-headed connection member and a connection nut according to an embodiment of the present invention;

FIG. 3 is an exploded view of the embodiment of the present invention, FIG. 1;

FIG. 4 is an enlarged schematic view of the structure of area A in FIG. 1 according to an embodiment of the present invention;

FIG. 5 is an enlarged schematic view of another structure of area A in FIG. 1 according to an embodiment of the present invention;

fig. 6 is a schematic view of a lock core structure in the embodiment of the present invention;

fig. 7 is an enlarged schematic view of the structure of the area B in fig. 1 according to an embodiment of the present invention;

fig. 8 is a schematic view of a pulling-resistant surface without a pulling-resistant step according to an embodiment of the present invention;

FIG. 9 is a first cross-sectional view of a positioning tool hole in an embodiment of the present invention;

FIG. 10 is a second cross-sectional view of a positioning tool hole according to an embodiment of the present invention;

FIG. 11 is a third schematic cross-sectional view of a positioning tool hole in an embodiment of the present invention;

FIG. 12 is a fourth schematic cross-sectional view of a positioning tool hole in an embodiment of the present invention;

FIG. 13 is a schematic cross-sectional view of a positioning tool hole in an embodiment of the present invention;

fig. 14 is a sixth schematic cross-sectional view of a positioning tool hole in an embodiment of the present invention;

fig. 15 is a schematic cross-sectional view seven of a positioning tool hole according to an embodiment of the present invention;

fig. 16 is a schematic sectional view eight of a positioning tool hole according to an embodiment of the present invention;

fig. 17 is a first schematic structural view of a retaining block in an embodiment of the present invention;

fig. 18 is a second schematic structural view of a retaining block in an embodiment of the present invention;

fig. 19 is a structural schematic view of a butt joint state of prefabricated parts according to an embodiment of the present invention;

fig. 20 is an enlarged schematic view of the structure of the C region in fig. 19 according to an embodiment of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, 2 and 3, a double-ended connector includes a middle connecting rod 100 and two plugs 200 symmetrically or substantially symmetrically disposed at two ends of the middle connecting rod 100, wherein the transition connection positions of the middle connecting rod 100 and the plugs 200 are respectively provided with inwardly extending and recessed locking grooves 10, such that the plugs 200 substantially symmetrically disposed at two ends have the same shape and size or substantially the same size.

It should be noted that: the term "symmetrical or substantially symmetrical and consistent or substantially consistent" in this technical specification means that the shapes and sizes of the connectors 200 including the two ends are completely consistent, that is, as described below, the pull-resistant surfaces 24 at the two ends are not provided with the pull-resistant steps 24a, or the pull-resistant surfaces 24 at the two ends are provided with the pull-resistant steps 24a, and it is not excluded that one end of the pull-resistant surfaces 24 at the two ends is provided with the pull-resistant steps 24a, and the other end is not provided with the pull-resistant steps 24 a.

According to the technical scheme, the shapes and sizes of the plug connectors at the two ends of the connecting piece are designed to be consistent or basically consistent, on one hand, the machining procedures of the two ends are at least basically the same in the machining process of the connecting piece, so that different machining procedures can be reduced, the operation of the machining procedures is simplified and facilitated, the machining cost is reduced, synchronous machining of the two ends can be realized, and the machining efficiency is improved; on the other hand, because the shapes and the sizes of the plug connectors at the two ends are consistent, the large and small nuts in the traditional connecting structure can be changed into the connecting nuts with the uniform sizes, the same batch production of the connecting nuts is realized, the investment of processing procedures and processing equipment is reduced, the production efficiency is improved, the production and processing cost is reduced, and the positive and beneficial technical effects are achieved.

Specifically, in the above scheme, the locking groove 10 includes a recessed portion 10a engaged with the plug 200, and the other end of the recessed portion 10a is engaged with the end face of the middle connecting rod 100 and is connected to the end face of the middle connecting rod 100, and forms a limiting portion 10b in cooperation with the outer edge of the end face of the middle connecting rod 100.

The combined structure of the limiting portion 10b and the recessed portion 10a forms the lock groove 10, so that when the plug-in connector 200 is inserted into the lock cylinder 600, the lock cylinder 600 can be effectively locked with the lock groove 10, particularly, the limiting portion 10b firmly limits the lock cylinder 600 in the area below the limiting portion 10b, and the lock cylinder 600 and the lock groove 10 can be stably and effectively locked.

As shown in fig. 8 to 16, the end portions of the plug 200 are provided with positioning tool holes 20 suitable for positioning.

The positioning tool hole 20 can facilitate the processing and forming of the middle connecting rod 100 and the plug 200, during processing, the positioning tool hole 20 is acted by a positioning clamping tool to position the middle connecting rod, and the processing tool acts on the position to be processed, such as the locking groove 10, the plug 200 and the like, so that the processing operation can be facilitated.

Wherein, the cross sectional shape design of positioning tool hole 20 is various, if can be triangle-shaped, square, rectangle, regular hexagon or regular octagon, circular, dysmorphism shape etc. even, does not describe herein again, specifically can see the utility model discloses specific embodiment picture 9 ~ 16 are shown.

In addition, as shown in fig. 1, 2 and 3, an anti-pulling section 21 is arranged between the end of the plug 200 and the locking groove 10, and the outer diameter of the anti-pulling section 21 gradually narrows from the end of the plug 200 to the locking groove 10 to form an anti-pulling surface 24 suitable for surface matching with the built-in lock core 600 of the double-head connecting piece.

When the plug 200 is subjected to a strong pulling force, the anti-pulling section 21 of the plug 200 moves upwards, the lock cylinder 600 generates friction displacement along the anti-pulling surface 24, expands outwards and is firmly locked on the anti-pulling section of the plug 200 under the limiting action of the middle locking block 300, so that the plug 200 is prevented from being separated, and an effective anti-pulling effect is achieved.

Furthermore, in order to increase the anti-pulling effect, a multi-stage tensile step 24a is arranged on the anti-pulling surface 24, and multi-stage sawteeth 60 are arranged on the contact surface of the lock core 600 corresponding to the lock core, so that when the lock core 600 is in friction displacement along the anti-pulling surface 24, the position of the uppermost layer of tensile step 24a close to the lock groove 10 is arranged, so that the gap between the upper pile and the lower pile is 0 when the clamp ring lock core 600 is clamped on the blocking surface; the position of the tensile step 24a at the lowest layer is arranged so that when the lock core 600 is clamped on the blocking surface, the gap between the upper pile and the lower pile is smaller than or equal to the maximum allowable range of error; the number of the tensile steps 24a may be plural, and is preferably 3.

It should be understood by those skilled in the art that the tensile step 24a is disposed on the pulling-resistant surface 24 to further increase the pulling-resistant effect, and neither of the pulling-resistant surfaces 24 at both ends is disposed with the tensile step 24a, or both of the pulling-resistant surfaces 24 at both ends are disposed with the tensile step 24a, or one end of the pulling-resistant surface 24 is disposed with the tensile step 24a, and the other end is not disposed with the tensile step 24a, which should be within the protection scope of the present technical solution.

In addition, as shown in fig. 4 and 5, the above-mentioned tensile step 24a may be in an arc-angle shape or a linear-angle-folded shape, and in particular, in order to achieve a better tensile effect, the tensile step 24a may preferably be in a linear-angle-folded shape, that is, as shown in fig. 5; or, in order to facilitate the processing and formation of the tensile step 24a, an arc angle shape may be preferable, that is, as shown in fig. 4.

As shown in fig. 1, 2 and 7, the lock cylinder 600 is supported on the base pad 500 of the lock cylinder 600 by the elastic force of the elastic member 400, and forms a diagonal support with the inner slope 30 of the middle locking piece 300 of the double-headed connector when the lock cylinder 600 is lockingly engaged with the locking groove 10.

It should be noted that: the plug 200 is inserted into the middle locking block 300, the end of the plug 200 is contacted with the top of the lock cylinder 600, and the lock cylinder 600 is extruded to slide outwards along the inner inclined surface 30 of the middle locking block 300, the lock cylinder 600 is expanded, the plug 200 passes through the lock cylinder 600, and under the action of the elastic restoring force of the elastic piece 400, the lock cylinder 600 resets along the inner inclined surface 30, and forms locking connection at the locking groove 10, so as to complete locking connection matching.

Specifically, an included angle α is formed between the outer end surface 61 of the lock cylinder 600 and the adjacent inner inclined surface 30, α is greater than or equal to 0 and less than or equal to 20 °, and the resultant force direction borne by the lock cylinder 600 in the locking and matching state with the lock groove 10 is deviated to the lock groove 10 through the design of the included angle α, so that the locking and connecting effect of the lock cylinder 600 and the lock groove 10 can be effectively ensured.

More specifically, as shown in fig. 6, the bottom surface 63 of the lock cylinder 600 is of a planar design, which is mainly convenient for contact installation with the base pad 500, and the side surface 64 may be of a vertical planar design or an inclined surface design, which is a vertical planar design structure in this embodiment, and the top 62 thereof is provided with a slope, which may be an inclined angle or an arc angle design, however, whether the inclined angle design or the arc angle design is adopted, the inlet 600a formed by the lock cylinder 600 is in an outward flaring shape, which facilitates insertion of the plug.

In addition, as shown in fig. 3, the base pad 500 is provided at the center thereof with a receptacle 50 corresponding to the plug 200, the plug 200 includes an insertion portion 22 adapted to be inserted into the receptacle 50 and a lead-in portion 23 engaged with the pull-out resistant section 21, and an inner diameter L1 of the receptacle 50 is at least greater than or equal to an outer diameter L2 of the insertion portion 22.

When the base pad 500 is designed to have a rigid structure, in order to ensure the smooth insertion of the plug 200, the inner diameter L1 of the insertion hole 50 is required to be at least larger than the outer diameter of the lead-in portion 23;

when the base pad 500 is designed to have an elastic structure, i.e., when the base pad 500 has an elastic self-restoring force, it is required that the inner diameter L1 of the insertion hole 50 is at least greater than or equal to the outer diameter L2 of the insertion portion 22, i.e., it is at least ensured that the insertion portion 22 can first enter the insertion hole 50, when the insertion portion 22 enters the insertion hole 50 and moves along the introduction portion 23, the base pad 500 is pressed to expand the insertion hole 50, and when the connector 200 smoothly passes through the insertion hole 50, the base pad 500 restores its original state by the self-restoring force.

As shown in fig. 17 and 18, the middle portion of the middle connecting rod 100 is further provided with a stop block 11 adapted to be inserted into the stop position, and the stop block 11 extends outward and protrudes to be adapted to abut against the outer end surface of the middle locking block 300 of the double-end connector.

The blocking clamping table 11 is provided to avoid that the upper prefabricated part cannot be effectively locked and connected due to excessive insertion when the middle connecting rod 100 and the plug 200 are inserted into the middle locking block 300 for plugging.

The structure of the retaining clip 11 is various, and those skilled in the art should understand that the main protection point is that it extends outward to protrude and is suitable for abutting against the outer end face of the middle locking block 300 of the double-ended connector, therefore, how to change the structure of the retaining clip is only to protrude out of the middle connecting rod 100 and be suitable for abutting against the outer end face of the middle locking block 300 of the double-ended connector, which is within the protection scope of the present technical solution.

In addition, it should be noted that, the middle locking block 300 in the above technical solution is preferably of a middle nut structure, an external thread matching with the internal thread of the connection nut is provided on the outer end surface of the middle locking block, and the middle locking block 300 and the connection nut 700 are effectively connected through a threaded connection.

As shown in fig. 19 and 20, the utility model also provides a butt-joint structural of prefabricated component based on above-mentioned double-end connecting piece, it realizes the double-end and pegs graft, and the connection effect is good to can effectively reduce manufacturing cost and improve production machining efficiency.

Specifically, the utility model provides a pair of prefabricated component's butt joint structure, including pre-buried in the coupling nut 700 of prefabricated component tip, and as aforesaid arbitrary double-end connector, double-end connector's middle latch segment 300 fixed connection is in coupling nut 700 to with be equipped with elastic component 400 between coupling nut 700, base pad 500 and lock core 600, coupling nut 700 in the prefabricated component of adjacent butt joint, and middle latch segment 300 and lock core 600 size unanimous, latch segment 300 passes lock core 600 in the middle of the bayonet joint 200 at double-end connector both ends inserts respectively, lock core 600 locates to form the lock joint in locked groove 10 under the effect of elasticity support.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. The utility model provides a double-end connecting piece, its characterized in that, including middle connecting rod and symmetry or basic symmetric distribution in the bayonet joint at middle connecting rod both ends, middle connecting rod with bayonet joint transition links up the position department and is equipped with respectively and extends sunken locked groove to the inboard.

2. The double-ended connector of claim 1, wherein: the locking groove comprises a concave part connected with the plug connector, the other end of the concave part is connected in the end face of the middle connecting rod, and the other end of the concave part is matched with the outer edge of the end face of the middle connecting rod to form a limiting part.

3. The double-ended connector according to claim 1 or 2, wherein: one end or two ends of the plug connector are provided with positioning tool holes suitable for positioning and processing.

4. The double-ended connector according to claim 1 or 2, wherein: an anti-pulling section is arranged between the end part of the plug connector and the lock groove, and the outer diameter of the anti-pulling section gradually narrows from the end part of each plug connector to the lock groove to form an anti-pulling surface which is suitable for being matched with the surface of the built-in lock cylinder of the double-end connecting piece.

5. The double-ended connector according to claim 4, wherein: the anti-pulling face is provided with a plurality of stages of tensile steps, and/or the lock cylinder is provided with a plurality of stages of saw teeth on the contact face facing the anti-pulling face.

6. The double-ended connector according to claim 4, wherein: the lock core is supported on the base pad of the lock core under the elastic supporting action of the elastic piece, and forms an inclined support with the inner inclined plane of the middle locking block of the double-head connecting piece when the lock core is in locking fit with the locking groove.

7. The double-ended connector of claim 6, wherein: an included angle alpha is formed between part of the outer peripheral surface of the lock core and the inner inclined surface adjacent to the outer peripheral surface, and alpha is more than or equal to 0 and less than or equal to 20 degrees.

8. The double-ended connector of claim 6, wherein: the center of the base pad is provided with a jack corresponding to the plug connector, the plug connector comprises an insertion part suitable for being inserted into the jack and a lead-in part connected with the pulling-resistant section, and the inner diameter of the jack is at least larger than or equal to the outer diameter of the insertion part.

9. The double-ended connector according to claim 1 or 2, wherein: the middle part of the middle connecting rod is also provided with a blocking platform suitable for the inserting stop position, and the blocking platform extends outwards to protrude and is suitable for abutting against the outer end face of the middle locking block of the double-end connecting piece.

10. The butt joint structure of the prefabricated parts comprises a connecting nut pre-embedded at the end part of the prefabricated part and the double-end connecting piece according to any one of claims 1 to 9, wherein a middle locking block of the double-end connecting piece is fixedly connected into the connecting nut, an elastic piece, a base pad and a lock cylinder are arranged between the middle locking block and the connecting nut, the sizes of the connecting nut, the middle locking block and the lock cylinder in the adjacent butt joint prefabricated parts are consistent, the inserting joints at the two ends of the double-end connecting piece are respectively inserted into the middle locking block to penetrate through the lock cylinder, and the lock cylinder forms locking connection at the locking groove under the elastic supporting effect.