Elastic clamping type square pile connecting piece

Abstract

The elastic clamping type square pile connecting piece comprises a small sleeve, a connecting piece inserting rod, a large sleeve and an inner limiting barrel, the inner limiting barrel is inserted into the large sleeve, the upper end of the inner limiting barrel is in threaded connection with the large sleeve, the lower end of the inner limiting barrel is gradually folded to form a folding opening, and a lower connecting opening is formed in the lower end of the large sleeve. The upper end of the connecting piece inserting rod is inserted into the small sleeve and is in threaded connection with the small sleeve, and the lower end of the connecting piece inserting rod is connected with an elastic clamping head. The concrete square pile comprises an upper square pile and a lower square pile, and the upper square pile and the lower square pile are connected through the elastic clamping type square pile connecting piece. According to the utility model, the elastic clamping head which can be elastically deformed is clamped with the inner limiting cylinder, and the elastic clamping head can be plastically deformed after the connecting piece inserting rod is further inserted, so that the connecting strength of the square pile is improved. The connecting piece is stable in structure, convenient to install and not prone to rusting and corrosion, and the connecting strength of the square pile can be kept for a long time.

Description

Technical Field

[0001] The utility model belongs to the technical field of square pile connectors, and in particular relates to a spring-clip type square pile connector. Background Art

[0002] Prestressed square piles are hollow cylindrical slender concrete prefabricated components made by prestressing technology and centrifugal forming. They are mainly composed of a square pile body, an end plate and a steel hoop. During construction, a connector is needed to connect the upper and lower square piles. There are various types of existing square pile connectors, which generally use threaded connections such as nuts. This connection method is easy to install, but due to the limited operating space at the square pile connection, the screwing of the nut is time-consuming and laborious. At the same time, the pure nut connection method is prone to loosening after long-term use. Therefore, it is necessary to improve the existing square pile connectors. Utility Model Content

[0003] In order to solve the above technical problems, the technical solution adopted by the utility model is: a spring-clip square pile connector, including a small sleeve, a connector rod, a large sleeve, and an inner limit sleeve, the inner limit sleeve is inserted into the interior of the large sleeve from the upper end of the large sleeve, the upper end of the inner limit sleeve is threadedly connected to the large sleeve, the lower end of the inner limit sleeve is gradually gathered to form a gathering opening, and the lower end of the large sleeve is provided with a lower connecting opening, the upper end of the connector rod is inserted into the interior of the small sleeve from the lower end of the small sleeve, the upper end of the connector rod is threadedly connected to the small sleeve, and the lower end of the connector rod is connected with an elastic clamping joint, the elastic clamping joint is composed of a plurality of circumferentially arranged hooks, the hook includes a connecting portion fixedly connected to the connector rod, the lower end of the connecting portion is gradually bent outward to form a hook portion, the outer side of the hook portion is provided with a guide slope, and the upper end of the small sleeve is provided with an upper connecting opening.

[0004] As a preferred embodiment of the above technical solution, a guide rod is fixedly connected to the middle part of the lower end of the connecting piece insertion rod, a movable tube is sleeved on the guide rod, and a top plate is fixedly connected to the lower end of the movable tube. The diameter of the top plate gradually increases from top to bottom to form an inner supporting inclined surface, and the inner side of the connecting part has an outer supporting inclined surface for fitting the inner supporting inclined surface. A limiting opening is provided at the upper end of the movable tube, and the lower end of the guide rod is inserted into the movable tube from the limiting opening and connected to a limiting plate. The diameter of the limiting plate is larger than the caliber of the limiting opening. A spring is sleeved on the guide rod, and the spring is clamped between the movable tube and the connecting piece insertion rod.

[0005] As a preferred embodiment of the above technical solution, a limiting ring is provided in the middle of the connecting member plug rod, the diameter of the limiting ring is larger than the inner diameter of the inner limiting tube, and the diameter of the limiting ring is larger than the inner diameter of the small sleeve.

[0006] As a preferred embodiment of the above technical solution, a feed channel and a discharge channel are provided in the connector rod, the feed channel forms an upper feed port on one side of the limiting ring, the feed channel forms a lower feed port at the lower end of the connector rod, the discharge channel forms an upper discharge port on the other side of the limiting ring, the discharge channel forms a lower discharge port at the lower end of the connector rod.

[0007] As a preferred embodiment of the above technical solution, the upper connecting port is connected to the interior of the small sleeve through a neck portion whose inner diameter gradually decreases from bottom to top, and the lower connecting port is connected to the interior of the large sleeve through an enlarged diameter portion whose inner diameter gradually increases from bottom to top.

[0008] The beneficial effects of the utility model are as follows: the spring-clip square pile connector of the utility model utilizes an elastically deformable elastic clamping joint to form a clamping connection with an inner limit tube, and after further inserting the connector rod, the elastic clamping joint can be plastically deformed, thereby improving the connection strength of the square pile. The concrete square piles connected by the spring-clip square pile connector of the utility model have a stable connector structure and are easy to install. Filling the interior of the connector and wrapping the exposed parts of the connector with fillers makes the connector less prone to rust and corrosion, and can maintain the connection strength of the square pile for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0010] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0011] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0012] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0013] like Figure 1 As shown, the spring-clip square pile connector includes a small sleeve 1, a connector rod 2, a large sleeve 3, and an inner limit tube 4. The inner limit tube 4 is inserted into the large sleeve 3 from the upper end of the large sleeve 3, and the upper end of the inner limit tube 4 is threadedly connected to the large sleeve 3. The lower end of the inner limit tube 4 is gradually gathered to form a gathering opening 5. The lower end of the large sleeve 3 is provided with a lower connecting opening 6. The upper end of the connector rod 2 is inserted into the small sleeve 1 from the lower end of the small sleeve 1, and the upper end of the connector rod 2 is threadedly connected to the small sleeve 1. The lower end of the connector rod 2 is connected with an elastic clamping joint 7. The elastic clamping joint 7 is composed of a plurality of circumferentially arranged hooks 8. The hook 8 includes a connecting portion 9 fixedly connected to the connector rod 2. The lower end of the connecting portion 9 is gradually bent outward to form a hook portion 10. The outer side of the hook portion 10 is provided with a guide inclined surface 11, and the upper end of the small sleeve 1 is provided with an upper connecting opening 12.

[0014] Furthermore, the middle of the lower end of the connector rod 2 is fixedly connected with a guide rod 13, a movable tube 14 is sleeved on the guide rod 13, a top plate 16 is fixedly connected to the lower end of the movable tube 14, the diameter of the top plate 16 gradually increases from top to bottom to form an inner support inclined surface 15, the inner side of the connecting portion 9 has an outer support inclined surface 17 for fitting the inner support inclined surface 15, a limiting opening 18 is provided at the upper end of the movable tube 14, the lower end of the guide rod 13 is inserted into the movable tube 14 from the limiting opening 18 and connected with a limiting plate 19, the diameter of the limiting plate 19 is larger than the diameter of the limiting opening 18, a spring 20 is sleeved on the guide rod 13, and the spring 20 is sandwiched between the movable tube 14 and the connector rod 2. After the elastic clamp 7 passes through the closing opening 5, the connector rod 2 is continuously inserted with force, so that the top plate 16 contacts the prestressed steel rod inserted from the lower connecting opening 6, so that the top plate 16 overcomes the elastic force of the spring 20 and moves in the reverse direction. By utilizing the cooperation between the inner supporting inclined surface 15 and the outer supporting inclined surface 17, the hook 8 is deformed and expanded outwards, and is inserted into the gap between the lower end of the inner limiting cylinder 4 and the inner wall of the large sleeve 3, so that the entire connecting piece is tightly connected as a whole.

[0015] Furthermore, a limiting ring 21 is provided in the middle of the connector plug rod 2 , and the diameter of the limiting ring 21 is larger than the inner diameter of the inner limiting tube 4 , and the diameter of the limiting ring 21 is larger than the inner diameter of the small sleeve 1 .

[0016] Furthermore, a feed channel 22 and a discharge channel 23 are provided in the connector rod 2. The feed channel 22 forms an upper feed port 24 on one side of the limiting ring 21, and a lower feed port 25 at the lower end of the connector rod 2. The discharge channel 23 forms an upper discharge port 26 on the other side of the limiting ring 21, and a lower discharge port 27 at the lower end of the connector rod 2. The filler enters the large sleeve 3 from the feed channel 22, and the air inside the large sleeve 3 is discharged from the discharge channel 23.

[0017] Furthermore, the upper connection port 12 is connected to the interior of the small sleeve 1 through a neck portion 28 whose inner diameter gradually decreases from bottom to top, and the lower connection port 6 is connected to the interior of the large sleeve 3 through an enlarged diameter portion 29 whose inner diameter gradually increases from bottom to top. The upper connection port 12 and the lower connection port 6 are respectively used to connect prestressed steel rods.

[0018] The concrete square pile includes an upper pile and a lower pile, and the upper pile and the lower pile are connected using the above-mentioned spring-clip square pile connector. The upper pile includes an upper pile body 30 and an upper prestressed steel rod 31, and the lower pile includes a lower pile body 32 and a lower prestressed steel rod 31. The small sleeve 1 is wrapped inside the upper pile body 30, and the upper prestressed steel rod 31 is inserted into the small sleeve 1 from the upper connection port 12 and fixedly connected with an upper limit portion 32, and the diameter of the upper limit portion 32 is larger than the inner diameter of the upper connection port 12. The large sleeve 3 is wrapped inside the lower pile body 32, and the lower prestressed steel rod 31 is inserted into the large sleeve 3 from the lower connection port 6 and fixedly connected with a lower limit portion 33, and the diameter of the lower limit portion 33 is larger than the inner diameter of the lower connection port 6. When preparing the upper pile, the upper prestressed steel rod 31 is inserted into the small sleeve 1 from the upper connection port 12, and is stamped and deformed to form the upper limit portion 32. The small sleeve 1 and the upper prestressed steel rod 31 are buried in the concrete constituting the upper pile body 30, and after solidification, they are integrated with the upper pile body 30. The upper end of the connector rod 2 is screwed into the small sleeve 1 and threadedly connected with the small sleeve 1. Similarly, the large sleeve 3 is installed in the lower pile body 32 and threadedly connected with the inner limit tube 4. The lower end of the connector rod 2 is inserted into the inner limit tube 4. During the insertion process, the elastic clamping joint 7 shrinks and deforms, and elastically recovers and opens after passing through the closing opening 5, so that the elastic clamping joint 7 is clamped with the inner limit tube 4.

[0019] Furthermore, the large sleeve 3 is filled with a filler, and the filler is glue or concrete. The glue is epoxy resin. Concrete composed of cement slurry can also be used as a filler. The filler enters the feed channel 22 from the upper feed port 24, and enters the inside of the large sleeve 3 through the lower feed port 25. The air inside the large sleeve 3 is discharged from the discharge channel 23 to ensure that the inside of the large sleeve 3 can be filled with the filler. In addition to filling the inside of the large sleeve 3, the filler also needs to wrap the exposed parts of the connectors such as the limit ring 21, so that the connection between the upper pile and the lower pile is smooth. The filler can effectively protect the connector, prevent oxidation and rust, prevent the threaded connection from loosening, and prevent the elastic clamping joint 7 from detaching from the retraction port 5, resulting in the loose connection of the square pile.

[0020] It is worth mentioning that the technical features such as springs, glue or concrete involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional methods in the field, and should not be regarded as the utility model points of this utility model patent. This utility model patent will not be further elaborated.

[0021] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field through logical analysis, reasoning or limited experiments based on the concept of the utility model on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. Spring-clip square pile connector, characterized in that: It includes a small sleeve, a connecting rod, a large sleeve, and an inner limit sleeve. The inner limit sleeve is inserted into the interior of the large sleeve from the upper end of the large sleeve, the upper end of the inner limit sleeve is threadedly connected to the large sleeve, the lower end of the inner limit sleeve is gradually gathered to form a gathering opening, and the lower end of the large sleeve is provided with a lower connecting opening. The upper end of the connecting rod is inserted into the interior of the small sleeve from the lower end of the small sleeve, the upper end of the connecting rod is threadedly connected to the small sleeve, and the lower end of the connecting rod is connected with an elastic clamping joint, which is composed of a plurality of circumferentially arranged clamping hooks. The clamping hook includes a connecting part fixedly connected to the connecting rod, the lower end of the connecting part is gradually bent outward to form a hook part, the outer side of the hook part is provided with a guide slope, and the upper end of the small sleeve is provided with an upper connecting opening.

2. The spring-clip square pile connector according to claim 1, characterized in that: A guide rod is fixedly connected to the middle of the lower end of the connecting piece insertion rod, and a movable tube is sleeved on the guide rod. A top plate is fixedly connected to the lower end of the movable tube. The diameter of the top plate gradually increases from top to bottom to form an inner supporting inclined surface. The inner side of the connecting part has an outer supporting inclined surface for fitting the inner supporting inclined surface. A limiting opening is provided at the upper end of the movable tube, and the lower end of the guide rod is inserted into the movable tube from the limiting opening and connected to a limiting plate. The diameter of the limiting plate is larger than the caliber of the limiting opening. A spring is sleeved on the guide rod, and the spring is clamped between the movable tube and the connecting piece insertion rod.

3. The spring-clip square pile connector according to claim 1, characterized in that: A limiting ring is arranged in the middle of the connecting piece plug rod, the diameter of the limiting ring is larger than the inner diameter of the inner limiting cylinder, and the diameter of the limiting ring is larger than the inner diameter of the small sleeve.

4. The spring-clip square pile connector according to claim 3, characterized in that: A feed channel and a discharge channel are provided in the connector rod. The feed channel forms an upper feed port on one side of the limiting ring, and a lower feed port is formed at the lower end of the connector rod. The discharge channel forms an upper discharge port on the other side of the limiting ring, and a lower discharge port is formed at the lower end of the connector rod.

5. The spring-clip square pile connector according to claim 1, characterized in that: The upper connection port is connected to the interior of the small sleeve via a neck portion whose inner diameter gradually decreases from bottom to top, and the lower connection port is connected to the interior of the large sleeve via an enlarged diameter portion whose inner diameter gradually increases from bottom to top.

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