Anti-pulling connecting piece

Abstract

The utility model provides an anti-pulling connecting piece which comprises an upper sleeve, a lower sleeve, an inserting piece and a clamping piece, and internal threaded holes are formed in the upper sleeve and the lower sleeve; the plug connector comprises a first threaded column part, a cone part and a limiting part, and the first threaded column part is mounted in the inner threaded hole of the upper sleeve; the clamping piece comprises a second threaded column part and a clamping jaw part, the second threaded column part is installed in the inner threaded hole of the lower sleeve, and a polygonal inner hole is formed in the second threaded column part; the cone part is arranged in the polygonal inner hole in a penetrating mode, and the limiting part penetrates out of the clamping jaw part. When the pipe pile connecting device is applied to pipe pile connection, the upper sleeve and the lower sleeve are embedded in an upper pipe pile section and a lower pipe pile section respectively, the inserting piece is connected with the upper sleeve in a matched mode, the clamping piece is connected with the lower sleeve in a matched mode, and then the inserting piece is inserted into the clamping piece, so that the clamping jaw part of the clamping piece tightly abuts against the limiting part of the inserting piece, and therefore the pipe pile connecting strength is effectively improved, and the anti-pulling effect is achieved. Meanwhile, a threaded connection mode is adopted, overall operation is convenient, and installation efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to building connecting piece technical field especially relates to a uplift connecting piece. BACKGROUND

[0002] The prestressed concrete pipe pile is a tubular slender component which is punched into the earth and the cross section size is much smaller than the length, the upper part of the pipe pile is connected with the pile cap (beam) to form the pile foundation. The foundation structure is the prestressed concrete structure, which can be divided into the post-tensioning prestressed pipe pile and the pre-tensioning prestressed pipe pile, has the characteristics such as large bearing capacity, good stability, small settlement value, and can adopt mechanized construction, greatly improves the construction progress. Due to the limitation of the material quality and transportation conditions of the pipe pile, in the pipe pile construction, multiple pipe piles need to be connected. The traditional pile connecting mode adopts the end plate welding, but the end plate welding mode is greatly influenced by weather factors and human factors, has the defects such as difficult to guarantee the welding quality, high construction difficulty and easy to be corroded by the underground soil. At present, some pipe pile connectors appear, but the structural strength is limited, and the installation is not convenient in actual operation. SUMMARY

[0003] The utility model discloses a kind of uplift connecting pieces to solve the shortcomings in prior art, applied in the connection construction of prestressed concrete pipe pile, convenient operation, and effectively guarantee connection strength.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A kind of uplift connecting piece, the uplift connecting piece includes upper sleeve, lower sleeve, plug-in piece and clamping piece, the structure of the upper sleeve with the lower sleeve is same and the upper sleeve with the lower sleeve is oppositely arranged, the upper sleeve, the lower sleeve respectively include coaxially arranged cylindrical part and polygonal column part, and the inside of the cylindrical part is equipped with internal thread hole;The plug-in piece includes coaxially arranged first threaded column part, cone part and limiting part, and the first threaded column part is fitted in the internal thread hole of the upper sleeve;The clamping piece includes coaxially arranged second threaded column part and clamping jaw part, the second threaded column part is fitted in the internal thread hole of the lower sleeve, the clamping jaw part includes a plurality of circumferentially spaced clamping jaws, and the end of multiple clamping jaws away from the second threaded column part is respectively inwardly gathered;The inside of the second threaded column part is equipped with polygonal hole;The cone part is arranged in the polygonal hole, and the limiting part is arranged from the gathered part of the clamping jaw part.

[0006] Preferably, the polygonal column part of the upper sleeve and the lower sleeve is respectively equipped with through-hole, and the inner diameter of the through-hole is smaller than the inner diameter of the internal thread hole.

[0007] Preferably, the inner part of the upper sleeve and the lower sleeve is provided with reinforcing ribs, which are located at the connection between the cylindrical part and the inner wall of the polygonal column part.

[0008] Preferably, the reinforcing ribs are triangular structures, and a plurality of reinforcing ribs are arranged along the circumference of the upper sleeve or the lower sleeve.

[0009] Preferably, the end face of the first threaded column part is provided with a positioning groove, which is formed by sinking the end face of the first threaded column part.

[0010] Preferably, a limiting flange is arranged between the first threaded column part and the conical part, the outer diameter of the limiting flange is greater than the inner diameter of the inner threaded hole of the upper sleeve and smaller than the outer diameter of the cylindrical part of the upper sleeve.

[0011] Preferably, the conical part is a circular conical structure, and the outer diameter of the end of the conical part close to the first threaded column part is greater than the outer diameter of the end of the conical part close to the limiting part.

[0012] Preferably, the end face of the end of the limiting part close to the conical part is provided with a positioning face, which is perpendicular to the central axis of the plug-in part, and the positioning face abuts against the clamping jaw part.

[0013] Preferably, the end of the limiting part away from the conical part is provided with a chamfered arc face.

[0014] Preferably, the polygonal column part is a hexagonal column structure or an octagonal column structure; and / or, the polygonal inner hole is a hexagonal inner hole or an octagonal inner hole.

[0015] Compared with the prior art, the beneficial effects of the anti-pulling connecting piece of the utility model are as follows: the anti-pulling connecting piece of the utility model is applied to pipe pile connection, the upper sleeve and the lower sleeve are respectively embedded in the upper and lower pipe piles, the plug-in part is connected with the upper sleeve in a matched mode, the clamping piece is connected with the lower sleeve in a matched mode, the plug-in part is inserted into the clamping piece, the clamping jaw part of the clamping piece tightly abuts against the limiting part of the plug-in part, the pipe pile connection strength is effectively improved, and the anti-pulling effect is achieved; meanwhile, the threaded connection mode is adopted, the overall operation is convenient, the installation efficiency is high, the polygonal inner hole is arranged in the clamping piece, and the installation of the clamping piece is facilitated by means of tools. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an exploded view of the anti-pulling connecting piece of some embodiments of the utility model;

[0017] Figure 2 It is a sectional view of the anti-pulling connecting piece of some embodiments of the utility model;

[0018] Figure 3Schematic diagram of the structure of the plug-in connector in some embodiments of the anti-pullout connector of the present utility model;

[0019] Figure 4 This is a schematic structural diagram of a clamping member in an anti-pullout connector in some embodiments of the present utility model;

[0020] Figure 5 A schematic structural diagram of the clamping member in some embodiments of the present invention from another perspective;

[0021] Figure 6 This is a schematic structural diagram of the lower sleeve in the anti-pullout connector of some embodiments of the present invention.

[0022] In the figure, 10-upper sleeve, 11-cylindrical portion, 111-inner threaded hole, 12-polygonal column, 121-rib hole, 13-reinforcement rib, 20-connector, 21-first threaded column, 211-positioning groove, 22-conical portion, 23-limiting portion, 231-positioning surface, 232-chamfered arc surface, 24-limiting flange, 30-clamping part, 31-second threaded column, 311-polygonal inner hole, 32-claw portion, 40-lower sleeve, 41-cylindrical portion, 411-inner threaded hole, 42-polygonal column, 421-rib hole, 43-reinforcement rib. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It is understood that, in the absence of conflict, some technical means of the various embodiments described herein can be replaced or combined with each other.

[0024] In the description of this utility model, the terms "first," "second," etc., if used, are used solely to distinguish the objects being described and do not convey any order or technical meaning. Therefore, an object defined as "first," "second," etc. may explicitly or implicitly include one or more of such objects. Furthermore, "a," "an," and similar terms do not imply a limitation on quantity, but rather indicate the presence of at least one, and "plurality" means at least two.

[0025] In the description of this utility model specification, reference to "one embodiment" or "some embodiments" means that one or more embodiments of the utility model include a particular feature, structure or characteristic described in conjunction with the embodiment. Therefore, the phrases "in one embodiment", "in some embodiments", "in other embodiments", "in other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments", unless otherwise specifically emphasized.

[0026] The utility model provides a pull-out resistant connector for realizing effective connection of prestressed concrete pipe piles, improving pull-out resistance and ease of operation. Figure 1 and Figure 2 In some embodiments, the pull-out resistant connector includes an upper sleeve 10, a lower sleeve 40, a plug-in connector 20 and a snap-in connector 30. The upper sleeve 10, the lower sleeve 40, the plug-in connector 20 and the snap-in connector 30 are split structures. The upper sleeve 10 and the lower sleeve 40 have the same structure and are arranged opposite to each other.

[0027] Specifically, the upper sleeve 10 and the lower sleeve 40 respectively include a coaxial cylindrical portion and a polygonal cylindrical portion, and an internal threaded hole is provided inside the cylindrical portion. Figure 2 The upper sleeve 10 includes a coaxial cylindrical portion 11 and a polygonal cylindrical portion 12, and an internal threaded hole 111 is provided inside the cylindrical portion 11; the lower sleeve 40 includes a coaxial cylindrical portion 41 and a polygonal cylindrical portion 42, and an internal threaded hole 411 is provided inside the cylindrical portion 41.

[0028] The plug-in connector 20 includes a coaxially arranged first threaded column 21, a tapered portion 22, and a limiting portion 23. The first threaded column 21 is mounted in conjunction with the internal threaded hole 111 of the upper sleeve 10. The clamping connector 30 includes a coaxially arranged second threaded column 31 and a claw portion 32. The second threaded column 31 is mounted in conjunction with the internal threaded hole 411 of the lower sleeve 40. The claw portion 32 includes a plurality of circumferentially spaced claws, and the ends of the plurality of claws away from the second threaded column 31 are respectively retracted inward. A polygonal inner hole 311 is provided within the second threaded column 31; the tapered portion 22 is inserted into the polygonal inner hole 311, and the limiting portion 23 extends through the retracted portion of the claw portion 32.

[0029] The inner diameter of the contracted portion of the claw portion 32 is smaller than the outer diameter of the limiting portion 23. When the plug connector 20 is inserted into the clamping connector 30, the claw portion 32 is impacted by the limiting portion 23 therein, causing the claw portion 32 to expand, allowing the limiting portion 23 to pass through the contracted portion of the claw portion 32, thereby achieving a clamping connection.

[0030] The above-mentioned pull-out resistant connector is used in pipe pile connection. The upper sleeve 10 and the lower sleeve 40 are respectively buried in the upper and lower sections of the pipe pile. The plug-in connector 20 is threadedly connected to the upper sleeve 10, and the clamping connector 30 is threadedly connected to the lower sleeve 40. The plug-in connector 20 is then inserted into the clamping connector 30, so that the claw portion 32 of the clamping connector 30 is tightly against the limiting portion 23 of the plug-in connector 20, thereby effectively improving the connection strength of the pipe pile and achieving an anti-pull-out effect. At the same time, the threaded connection method is adopted, the overall operation is convenient, and the installation efficiency is high. A polygonal inner hole 311 is provided in the clamping connector 30, which is convenient for installation of the clamping connector 30 with the help of tools.

[0031] During manufacturing, the upper sleeve 10, lower sleeve 40, connector 20, and clip 30 can be integrally molded from high-strength, corrosion-resistant alloy materials, resulting in high structural strength and a long service life. Furthermore, because the upper sleeve 10 and lower sleeve 40 have the same structure, mold and management costs can be reduced during manufacturing, processing, and parts management.

[0032] In some preferred embodiments, the polygonal column portions of the upper sleeve 10 and the lower sleeve 40 are respectively provided with rib holes, and the inner diameter of the rib holes is smaller than the inner diameter of the internal threaded hole. Figure 2 The polygonal column portion 12 of the upper sleeve 10 is provided with a reinforcing hole 121, which is coaxial with the internal threaded hole 111 and has a smaller inner diameter than the internal threaded hole 111. The polygonal column portion 42 of the lower sleeve 40 is provided with a reinforcing hole 421, which has a smaller inner diameter than the internal threaded hole 411 and is coaxial with the internal threaded hole 411. During the pipe pile connection, rebar can be inserted into the reinforcing holes 121 and 421, thereby enhancing the connection strength of the pipe pile.

[0033] In some preferred embodiments, the upper sleeve 10 and the lower sleeve 40 are provided with reinforcing ribs at the connection between the inner wall of the cylindrical portion and the polygonal column portion, which can enhance the structural strength of the upper sleeve 10 and the lower sleeve 40 and extend their service life. Figure 2 The upper sleeve 10 is provided with a reinforcing rib 13 inside, and the reinforcing rib 13 is located at the connection between the inner wall of the cylindrical part 11 and the polygonal column part 12, thereby enhancing the structural strength of the upper sleeve 10 and extending its service life; the lower sleeve 40 is provided with a reinforcing rib 43 inside, and the reinforcing rib 43 is located at the connection between the inner wall of the cylindrical part 41 and the polygonal column part 42, thereby enhancing the structural strength of the lower sleeve 40 and extending its service life.

[0034] In some preferred embodiments, the reinforcing ribs are triangular in structure, and there are multiple reinforcing ribs, which are spaced apart along the circumference of the upper sleeve 10 or the lower sleeve 40. Figure 6In some embodiments, the reinforcing rib 43 is in a triangular structure, and there are multiple reinforcing ribs 43 which are arranged along the circumference of the lower sleeve 40. Correspondingly, the reinforcing rib 13 in the upper sleeve 10 can also be arranged in a triangular structure. In other embodiments, the reinforcing rib can also adopt other reasonable shapes or structures.

[0035] With reference to Figure 1 In some preferred embodiments, the end surface of the first threaded column portion 21 is provided with a positioning groove 211 which is formed by sinking the end surface of the first threaded column portion 31. The reinforcing steel bar is inserted into the upper sleeve 10 from the reinforcing steel bar insertion hole 121, and the reinforcing steel bar abuts against the positioning groove 211 to achieve the positioning effect.

[0036] With reference to Figures 1 to 3 In some preferred embodiments, a limiting flange 24 is arranged between the first threaded column portion 21 and the conical portion 22, the outer diameter of the limiting flange 24 is greater than the inner diameter of the internal threaded hole 111 of the upper sleeve 10 and smaller than the outer diameter of the cylindrical portion 11 of the upper sleeve 10. In this way, when the plug-in part 20 and the upper sleeve 10 are installed in place, the limiting flange 24 can abut against the end surface of the cylindrical portion 11 of the upper sleeve 10 to ensure the installation accuracy and reliability.

[0037] In some preferred embodiments, the conical portion 22 is in a circular conical structure, and the outer diameter of the end of the conical portion 22 close to the first threaded column portion 21 is greater than the outer diameter of the end of the conical portion 22 close to the limiting portion 23.

[0038] Further, the end surface of the limiting portion 23 close to the conical portion 22 is provided with a positioning surface 231 which is perpendicular to the central axis of the plug-in part 20. When the plug-in part 20 is connected with the clamping part 30, the positioning surface 231 abuts against the clamping jaw portion 32 to achieve the anti-pulling effect and ensure the positioning accuracy.

[0039] In some preferred embodiments, the end of the limiting portion 23 away from the conical portion 22 is provided with a chamfered arc surface 232. In the process of inserting the plug-in part 20 into the clamping part 30, the chamfered arc surface 232 can play a guiding role, so that the limiting portion 23 can more conveniently pass through the folded part of the clamping jaw portion 32, thereby improving the assembly efficiency.

[0040] In some preferred embodiments, the polygonal column portion 12, 42 is in a hexagonal column structure or an octagonal column structure; and / or, the polygonal internal hole 311 is a hexagonal internal hole or an octagonal internal hole, so as to facilitate the installation of the upper sleeve 10, the lower sleeve 40 and the clamping part 30 by means of a wrench or the like, and improve the operation convenience and installation efficiency.

[0041] In summary, the utility model provides a kind of anti-pulling connecting piece, applied to pipe pile connection, upper sleeve and lower sleeve are buried in upper and lower two section pipe pile respectively, plug-in piece is connected with upper sleeve, clamping piece is connected with lower sleeve, plug-in piece is inserted into clamping piece again, so that the clamping jaw part of clamping piece tightly abuts against the limiting part of plug-in piece, to effectively improve pipe pile connection strength, reach anti-pulling effect;At the same time, by screw connection mode, overall operation is convenient, installation efficiency is high, polygonal inner hole is arranged in clamping piece, and the installation of clamping piece is facilitated by tool.

[0042] The utility model has been described by the above related embodiments, however the above embodiment is only the example of implementation of the utility model. It must be pointed out that the disclosed embodiment does not limit the scope of the utility model. On the contrary, the change and the decoration made within the spirit and the scope of the utility model are all the patent protection scope of the utility model.

Claims

1. A pull-out resistant connector, characterized in that: The cam is adapted to engage a threaded hole in the cylinder and engage with the guide rails to engage with the threaded hole in the cylinder, and the cam is adapted to engage with the guide rails to engage with the guide rails.

2. The pull-out resistant connector according to claim 1, characterized in that: The polygonal column portions of the upper sleeve and the lower sleeve are respectively provided with rib-penetrating holes, and the inner diameter of the rib-penetrating holes is smaller than the inner diameter of the internal threaded hole.

3. The pull-out resistant connector according to claim 1, characterized in that: Reinforcement ribs are provided inside the upper sleeve and the lower sleeve, and the reinforcement ribs are located at the connection between the cylindrical portion and the inner wall of the polygonal column portion.

4. The pull-out resistant connector according to claim 3, characterized in that: The reinforcing ribs are triangular in structure, and there are multiple reinforcing ribs, which are arranged at intervals along the circumference of the upper sleeve or the lower sleeve.

5. The pull-out resistant connector according to claim 1, wherein: A positioning groove is provided on the end surface of the first threaded column portion, and the positioning groove is formed by sinking the end surface of the first threaded column portion.

6. The pull-out resistant connector according to claim 1, characterized in that: A limiting flange is provided between the first threaded column portion and the cone portion. The outer diameter of the limiting flange is larger than the inner diameter of the internal threaded hole of the upper sleeve and smaller than the outer diameter of the cylindrical portion of the upper sleeve.

7. The pull-out resistant connector according to claim 1, characterized in that: The cone portion is a circular cone structure, and the outer diameter of one end of the cone portion close to the first threaded column portion is greater than the outer diameter of one end of the cone portion close to the limiting portion.

8. The pull-out resistant connector according to claim 7, characterized in that: A positioning surface is provided on an end surface of the limiting portion facing the cone portion, the positioning surface is perpendicular to the central axis of the connector, and the positioning surface abuts against the claw portion.

9. The pull-out resistant connector according to claim 7, characterized in that: An end of the limiting portion away from the cone portion is provided with a chamfered arc surface.

10. The pull-out resistant connector according to any one of claims 1 to 9, characterized in that: The polygonal column portion is a hexagonal column structure or an octagonal column structure; and / or the polygonal inner hole is a hexagonal inner hole or an octagonal inner hole.

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