Self-locking connecting device for concrete pile

Abstract

The utility model provides a self-locking connecting device for a concrete pile. The self-locking connecting device comprises a first connecting sleeve, a second connecting sleeve, a clamping jaw structure, an elastic mechanism, a plugging mechanism, an inserting rod structure and two prestressed steel bars. The first connecting sleeve and the second connecting sleeve are symmetrically arranged left and right; the outer side end part of each connecting sleeve is correspondingly connected with one prestressed steel bar; a clamping jaw structure is arranged at the end of the inner side of the first connecting sleeve, a first flange plate of the clamping jaw structure is connected with an elastic mechanism, and the elastic mechanism is arranged on the inner side of the first connecting sleeve. According to the self-locking connecting device for the concrete pile, the problem that time and labor are wasted when a worker installs the self-locking connecting device due to the fact that an elastic clamping type connecting device adopted in the related technology is complex in internal structure is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to prestressed concrete pile production technical field especially is related to a kind of self-locking connecting device for concrete pile. BACKGROUND

[0002] Mechanical connection type prestressed concrete pile is more and more widely used in prestressed concrete pile construction field.The main function of mechanical connecting device is to connect two prestressed concrete piles quickly and firmly to ensure the continuity and stability of the whole pile body.The butt joint of pile body is completed in a short time by mechanical device, to avoid the cumbersome steps of traditional welding.The connection between piles by mechanical components can withstand strong axial tension and pressure, to ensure the structural integrity of prestressed pile during construction and use, and the elastic card type connecting device is widely used in engineering.Because the elastic card type connecting device used in the related art has complex internal structure, it causes the problems of time-consuming and laborious installation for workers, and slight working deviation can greatly affect the connection quality of pile and the quality of pile foundation construction. SUMMARY

[0003] Therefore, the utility model at least partly solves one of the problems in the related art.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A self-locking connecting device for concrete pile, comprising a first connecting sleeve, a second connecting sleeve, a claw structure, an elastic mechanism, a plugging mechanism, a plug rod structure and two prestressed steel bars;

[0006] The first connecting sleeve and the second connecting sleeve are symmetrically arranged left and right, and the outer end of each connecting sleeve is connected with a prestressed steel bar;

[0007] The inner end of the first connecting sleeve is provided with the claw structure, the first flange plate of the claw structure is connected with the elastic mechanism, and the elastic mechanism is arranged inside the first connecting sleeve;

[0008] The fixed end of the plug rod structure is threadedly connected with the second connecting sleeve, the connecting end of the plug rod structure is arranged outside the second connecting sleeve, and the connecting end of the plug rod structure can cooperate with the claw structure;

[0009] The inner end of the second connecting sleeve is provided with the plugging mechanism, and the plugging mechanism is used for limiting the claw structure after the claw structure cooperates with the connecting end of the plug rod structure.

[0010] Further, the claw structure comprises a first flange plate and a plurality of fixed claws, the plurality of fixed claws are arranged on the first flange plate in a circumferentially uniform manner, the first flange plate is connected with the elastic mechanism, the cross section of each fixed claw is in an arc shape, and the inner side end of the fixed claw is provided with a fixed clamping platform for fixing the connecting end of the insertion rod structure.

[0011] Further, the insertion rod structure comprises a plug, a connecting insertion rod and a socket, one end of the connecting insertion rod is connected with the plug, the other end of the connecting insertion rod is connected with the socket, the socket is screwed with the second connecting sleeve, one end of the plug is in a tapered structure, the other end of the plug is provided with a fixed platform, and the fixed platform can be matched with the fixed clamping platform.

[0012] Further, the elastic mechanism comprises a first annular baffle, a plurality of guide rods and a plurality of first compression springs, the first annular baffle is arranged on the inner wall of the first connecting sleeve, the plurality of guide rods are arranged on the first annular baffle in a circumferentially uniform manner, one first compression spring is arranged on each guide rod, the outer side end of each guide rod is in a sliding fit with the first flange plate, one limiting nut is arranged on the outer side end of each guide rod, and the first compression spring is located between the first annular baffle and the first flange plate.

[0013] Further, the sealing mechanism is a sealing sleeve, one end of the sealing sleeve is provided with a curved surface structure capable of being matched with the outside of the claw structure, and the other end of the sealing sleeve is screwed with the second connecting sleeve.

[0014] Further, the sealing mechanism is a sealing sleeve, one end of the sealing sleeve is provided with a curved surface structure capable of being matched with the outside of the claw structure, and the other end of the sealing sleeve is connected with the second connecting sleeve through an elastic assembly.

[0015] Further, the elastic assembly comprises a second annular baffle, a second flange plate and a second compression spring, the second flange plate is arranged at the end of the sealing sleeve, the second annular baffle is arranged on the inner wall of the second connecting sleeve, one end of the second compression spring abuts against the second flange plate, and the other end of the second compression spring abuts against the second annular baffle.

[0016] Further, the first connecting sleeve comprises a sleeve body and an end cover, one end of the sleeve body is in a sliding fit with the pre-stressed steel rod, the other end of the sleeve body is detachably connected with the end cover, the end cover is provided with a notch, and the first connecting sleeve and the second connecting sleeve are the same in structure.

[0017] Compared with the prior art, the self-locking connecting device for the concrete pile has the following advantages:

[0018] 1、The plurality of fixed clamps in the dog structure are arranged uniformly in a circle, which can realize multi-point force distribution during connection. This design avoids the stress concentration phenomenon caused by single-point force concentration, and improves the overall strength of the connection. The cross section of the fixed clamp adopts an arc structure, which tightly matches the tapered end of the insertion rod structure and the fixed table surface, and can form a reliable embedded connection to avoid loosening or slipping.

[0019] 2、The elastic mechanism is designed by cooperating the compression spring with the guide rod, so that the dog structure can quickly rebound and clamp the insertion rod after the insertion rod is inserted, and a stable self-locking connection is formed. The automatic rebounding feature improves the reliability and stability of the connection. The elastic mechanism can make subtle adjustments according to the stress during the connection process to ensure that the dog is always tightly matched with the insertion rod, avoiding loosening or misalignment. The elastic mechanism uses the compression effect of the spring to trigger the dog structure to lock quickly at the moment of insertion of the insertion rod, without the need for additional manual adjustment. The quick locking mechanism can significantly simplify the construction process and save construction time.

[0020] 3、The elastic assembly provides continuous pre-tightening force for the plugging sleeve through the continuous action of the compression spring, so that the plugging structure can always tightly fit the dog structure, avoiding connection loosening or gap generation. In the case of external load change or pile body micro-motion, the elastic assembly can automatically adjust the position of the plugging sleeve through the elastic deformation of the spring to ensure the consistency and stability of the sealing effect. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which form a part of this description, are included to provide a further understanding of the application. The embodiments of the application and its

[0022] Figure 1 A self-locking connection device for a concrete pile according to an embodiment of the application;

[0023] Figure 2 A first connection sleeve according to an embodiment of the application;

[0024] Figure 3 An elastic mechanism and a dog structure according to an embodiment of the application;

[0025] Figure 4 An insertion rod structure and an elastic assembly structure according to an embodiment of the application;

[0026] Figure 5 A plugging structure according to an embodiment of the application.

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] 100, first connecting sleeve; 110, prestressed steel bar; 200, second connecting sleeve; 300, claw structure; 301, fixed claw; 302, fixed claw base; 311, guide rod; 312, first compression spring; 313, limiting nut; 400, plug connector; 410, connecting plug rod; 420, socket; 500, plugging mechanism; 510, plugging sleeve; 511, curved surface structure; 520, second flange plate. DETAILED DESCRIPTION

[0029] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0030] In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0031] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0033] A self-locking connecting device for concrete piles, such as Figure 1As shown, it comprises a first connecting sleeve 100, a second connecting sleeve 200, a jaw structure 300, an elastic mechanism, a plugging mechanism 500, a plug rod structure, and two prestressed steel bars 110; the first connecting sleeve 100 and the second connecting sleeve 200 are symmetrically arranged, and the outer end of each connecting sleeve is connected with a prestressed steel bar 110; the first connecting sleeve 100 comprises a sleeve body and an end cap, one end of the sleeve body is in sliding fit with the prestressed steel bar 110, and the other end of the sleeve body is connected with the end cap through a screw, the end cap is provided with a notch, and the first connecting sleeve 100 and the second connecting sleeve 200 are the same in structure. The first connecting sleeve 100 is pre-buried in the upper section pile, and the second connecting sleeve 200 is pre-buried in the lower section pile.

[0034] The inner end of the first connecting sleeve 100 is provided with the jaw structure 300, the first flange plate of the jaw structure 300 is connected with the elastic mechanism, and the elastic mechanism is arranged in the inner side of the first connecting sleeve 100; as shown in Figure 2 As shown, the elastic mechanism comprises a first annular baffle, a plurality of guide rods 311, and a plurality of first compression springs 312, the first annular baffle is arranged on the inner wall of the first connecting sleeve 100, the plurality of guide rods 311 are arranged in a circle on the first annular baffle, one first compression spring 312 is arranged on each guide rod 311, the outer end of each guide rod 311 is in sliding fit with the first flange plate, one limiting nut 313 is arranged on the outer end of each guide rod 311, and the first compression spring 312 is located between the first annular baffle and the first flange plate. The elastic mechanism is designed by the cooperation of the compression spring and the guide rod 311, so that the jaw structure 300 can quickly rebound and clamp the plug rod after the plug rod is inserted, and a stable self-locking connection is formed. The automatic rebounding property improves the reliability and stability of the connection. The elastic mechanism can make slight adjustments according to the stress condition in the connection process, so as to ensure that the jaw is always in close fit with the plug rod and avoid loosening or misalignment. The elastic mechanism triggers the jaw structure 300 to quickly lock at the moment when the plug rod is inserted by using the compression effect of the spring, and no additional manual adjustment is needed. The quick locking mechanism can significantly simplify the construction process and save construction time.

[0035] The fixed end of the plug rod structure is in threaded connection with the second connecting sleeve 200, the connecting end of the plug rod structure is arranged outside the second connecting sleeve 200, and the connecting end of the plug rod structure can cooperate with the jaw structure 300; the plug rod structure comprises a plug connector 400, a connecting plug rod 410, and a socket 420, one end of the connecting plug rod 410 is connected with the plug connector 400, the other end of the connecting plug rod 410 is connected with the socket 420, the socket 420 is in threaded fit with the second connecting sleeve 200, one end of the plug connector 400 is in conical structure, the other end of the plug connector 400 is provided with a fixed platform, and the fixed platform can cooperate with the fixed jaw platform 302.

[0036] The inner end of the second connecting sleeve 200 is provided with a blocking mechanism 500, which is used for limiting the claw structure 300 after the connecting end of the plug rod structure is matched with the claw structure 300. Figure 4 and 5 As shown in the figures, the blocking mechanism 500 is a blocking sleeve 510, one end of the blocking sleeve 510 is provided with a curved surface structure 511 capable of being matched with the outside of the claw structure 300, and the other end of the blocking sleeve 510 is connected with the second connecting sleeve 200 through an elastic assembly. In the embodiment, the elastic assembly includes a second annular baffle, a second flange plate 520 and a second compression spring, the second flange plate 520 is arranged at the end of the blocking sleeve 510, the second annular baffle is arranged on the inner wall of the second connecting sleeve 200, one end of the second compression spring abuts against the second flange plate 520, and the other end of the second compression spring abuts against the second annular baffle. The elastic assembly provides the blocking sleeve 510 with continuous pre-tightening force through the continuous action of the compression spring, so that the blocking structure can always closely fit the claw structure 300, and the connection is prevented from being loose or a gap being generated. In the case that the external load changes or the pile body moves slightly, the elastic assembly can automatically adjust the position of the blocking sleeve 510 through the elastic deformation of the spring, so as to ensure the consistency and stability of the sealing effect.

[0037] As shown in the figures, Figure 2 The claw structure 300 includes a first flange plate and a plurality of fixed claws 301, the plurality of fixed claws 301 are arranged in a circumferentially uniform manner on the first flange plate, the first flange plate is connected with the elastic mechanism, the cross section of each fixed claw 301 is an arc-shaped structure, and the inner end of the fixed claw 301 is provided with a fixed clamping surface 302 for fixing the connecting end of the plug rod structure. The plurality of fixed claws 301 in the claw structure 300 are arranged in a circumferentially uniform manner, so that multi-point force distribution can be realized during connection. This design avoids the stress concentration phenomenon caused by single-point force concentration, and improves the overall strength of the connection. The cross section of the fixed claw 301 adopts an arc-shaped structure, which is closely matched with the tapered end of the plug rod structure and the fixed surface, so that reliable embedded connection can be formed, and loosening or sliding can be avoided.

[0038] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A self-locking connection device for concrete piles, characterized in that: It includes a first connecting sleeve (100), a second connecting sleeve (200), a claw structure (300), an elastic mechanism, a sealing mechanism (500), a plug structure, and two prestressed steel bars (110); The first connecting sleeve (100) and the second connecting sleeve (200) are symmetrically arranged on the left and right sides, and the outer end of each connecting sleeve is connected to a prestressed steel bar (110). The claw structure (300) is provided on the inner end of the first connecting sleeve (100), and the first flange plate of the claw structure (300) is connected to the elastic mechanism. The elastic mechanism is provided on the inner side of the first connecting sleeve (100). The fixed end of the insert rod structure is threadedly connected to the second connecting sleeve (200), the connecting end of the insert rod structure is located outside the second connecting sleeve (200), and the connecting end of the insert rod structure can cooperate with the claw structure (300); The sealing mechanism (500) is provided on the inner end of the second connecting sleeve (200). When the claw structure (300) is engaged with the connecting end of the insert rod structure, the sealing mechanism (500) is used to limit the claw structure (300).

2. The self-locking connection device for concrete piles according to claim 1, characterized in that: The claw structure (300) includes a first flange plate and a plurality of fixed claws (301). The plurality of fixed claws (301) are evenly arranged on the first flange plate. The first flange plate is connected to the elastic mechanism. The cross-section of each fixed claw (301) is an arc-shaped structure. The inner end of the fixed claw (301) is provided with a fixing plate (302) for fixing the connecting end of the plug structure.

3. A self-locking connection device for concrete piles according to claim 2, characterized in that: The plug structure includes a plug connector (400), a connecting plug rod (410), and a socket (420). One end of the connecting plug rod (410) is connected to the plug connector (400), and the other end of the connecting plug rod (410) is connected to the socket (420). The socket (420) is threadedly engaged with the second connecting sleeve (200). One end of the plug connector (400) has a tapered structure, and the other end of the plug connector (400) is provided with a fixed platform that can cooperate with the fixed card plate (302).

4. A self-locking connection device for concrete piles according to any one of claims 2-3, characterized in that: The elastic mechanism includes a first annular baffle, a plurality of guide rods (311) and a plurality of first compression springs (312). The first annular baffle is disposed on the inner wall of the first connecting sleeve (100). The plurality of guide rods (311) are evenly arranged on the first annular baffle. Each guide rod (311) is provided with a corresponding first compression spring (312). The outer end of the guide rod (311) is slidably engaged with the first flange plate. Each outer end of the guide rod (311) is provided with a corresponding limiting nut (313). The first compression spring (312) is located between the first annular baffle and the first flange plate.

5. A self-locking connection device for concrete piles according to claim 4, characterized in that: The sealing mechanism (500) is a sealing sleeve (510). One end of the sealing sleeve (510) is provided with a curved surface structure (511) that can cooperate with the outside of the claw structure (300). The other end of the sealing sleeve (510) is threadedly connected to the second connecting sleeve (200).

6. A self-locking connection device for concrete piles according to claim 4, characterized in that: The sealing mechanism (500) is a sealing sleeve (510). One end of the sealing sleeve (510) is provided with a curved surface structure (511) that can cooperate with the outside of the claw structure (300). The other end of the sealing sleeve (510) is connected to the second connecting sleeve (200) through an elastic component.

7. A self-locking connection device for concrete piles according to claim 6, characterized in that: The elastic component includes a second annular baffle, a second flange plate (520) and a second compression spring. The second flange plate (520) is disposed at the end of the sealing sleeve (510). The second annular baffle is disposed on the inner wall of the second connecting sleeve (200). One end of the second compression spring abuts against the second flange plate (520), and the other end of the second compression spring abuts against the second annular baffle.

8. A self-locking connection device for concrete piles according to claim 4, characterized in that: The first connecting sleeve (100) includes a sleeve body and an end cap. One end of the sleeve body is slidably engaged with the prestressed steel bar (110), and the other end of the sleeve body is detachably connected to the end cap. The end cap is provided with a groove. The first connecting sleeve (100) and the second connecting sleeve (200) have the same structure.

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