Elastic clamping type connecting piece for concrete square pile

Abstract

The utility model discloses a concrete square pile elastic clamping type connecting piece which comprises a connecting cylinder, an upper connecting pipe, a lower connecting pipe, a central column and an inner sleeve, the lower end of the upper connecting pipe is inserted into the connecting cylinder from the upper end of the connecting cylinder, internal threads are arranged in the upper connecting pipe, the central column comprises a threaded section and a clamping ring section which are sequentially arranged from top to bottom, and the inner sleeve is sleeved with the threaded section. The clamping ring section is sequentially provided with a plurality of clamping rings at intervals from top to bottom, a clamping groove is formed between every two adjacent clamping rings, the upper end of the lower connecting pipe is inserted into the connecting cylinder from the lower end of the connecting cylinder, internal threads are arranged in the lower connecting pipe, the inner sleeve is located in the connecting cylinder, and a plurality of circles of clamping jaws are arranged in the inner sleeve. According to the elastic clamping type connecting piece for the concrete square pile, an elastic clamping type connecting mode is adopted, and the connecting speed of the square pile is guaranteed. And the multiple circles of clamping jaws are matched with the multiple clamping grooves, so that the anti-pulling performance of the connecting piece is improved. And meanwhile, the structure of each part of the connecting piece is optimized, and the anti-shearing performance of the connecting piece is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of square pile connectors, and particularly relates to a spring clip type connector for concrete square piles. Background Art

[0002] A concrete square pile is a precast pile, which is produced in a factory by means of centrifugation, steam curing, etc. When it is needed, it is pulled to the construction site for pile driving. For the convenience of production, the concrete square pile has a specific specification length during production. When a single square pile cannot meet the requirements of the construction site, two or more square piles need to be connected in sequence. Connecting the main steel bars on the square piles with a connector can also achieve the connection of the square piles. The spring clip type connector is connected by means of insertion and clamping, which can improve the connection efficiency of the square piles. However, the existing spring clip type connector has poor anti-pulling ability and poor anti-shearing force performance, and needs to be improved. Summary of the Utility Model

[0003] To solve the above technical problems, the technical solution adopted by the utility model is: a spring clip type connector for concrete square piles, including a connecting cylinder, an upper connecting pipe, a lower connecting pipe, a central column, and an inner sleeve. The lower end of the upper connecting pipe is inserted into the connecting cylinder from the upper end of the connecting cylinder. The upper connecting pipe is provided with internal threads. The central column includes a threaded section and a snap ring section arranged in sequence from top to bottom. The threaded section is inserted into the upper connecting pipe from the lower end of the upper connecting pipe and is threadedly connected with the upper connecting pipe. The snap ring section is provided with a plurality of snap rings at intervals from top to bottom. A slot is formed between adjacent snap rings. The upper end of the lower connecting pipe is inserted into the connecting cylinder from the lower end of the connecting cylinder and is threadedly connected with the connecting cylinder. The lower connecting pipe is provided with internal threads. The inner sleeve is located in the connecting cylinder and between the upper connecting pipe and the lower connecting pipe. A plurality of circles of claws are arranged in the inner sleeve. Each circle of claws corresponds to a slot. Each circle of claws includes a plurality of claws evenly arranged in a ring. One end of the claw is fixedly connected to the inner wall of the inner sleeve, and the other end is snapped into the corresponding slot.

[0004] As a preference of the above technical solution, the inner sleeve is threadedly connected with the connecting cylinder.

[0005] As a preference of the above technical solution, the lower end of the inner sleeve is provided with a process groove with a regular hexagon cross section.

[0006] As a preference of the above technical solution, a retaining ring is fixedly connected in the connecting cylinder, and the retaining ring is located between the upper connecting pipe and the inner sleeve.

[0007] As a preference of the above technical solution, nuts are fixedly connected to the upper connecting pipe and the lower connecting pipe.

[0008] As a preference of the above technical solution, the upper surface and the lower surface of the snap ring are smoothly transitioned.

[0009] The beneficial effects of the present utility model are as follows: The elastic snap - type connector for concrete square piles of the present utility model adopts an elastic snap - type connection method, ensuring the connection speed of the square piles. The cooperation of multiple - turn claws and multiple slots improves the anti - pulling performance of the connector. At the same time, the structures of various components of the connector are optimized, improving the anti - shear performance of the connector. Brief Description of the Drawings

[0010] Figure 1 It is a schematic structural diagram of the present utility model. Detailed Embodiment

[0011] Next, the technical solutions of the present utility model will be described clearly and completely in conjunction with the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0012] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 thus cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0013] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0014] Such as Figure 1As shown in the figure, the elastic clamping type connector for concrete square piles includes a connecting cylinder 1, an upper connecting pipe 2, a lower connecting pipe 3, a central column 4, and an inner sleeve 5. The lower end of the upper connecting pipe 2 is inserted into the connecting cylinder 1 from the upper end of the connecting cylinder 1. The inner thread is provided inside the upper connecting pipe 2. The central column 4 includes a threaded section 6 and a snap ring section 7 arranged in sequence from top to bottom. The threaded section 6 is inserted into the upper connecting pipe 2 from the lower end of the upper connecting pipe 2 and is threadedly connected to the upper connecting pipe 2. A plurality of snap rings 8 are arranged at intervals in sequence from top to bottom on the snap ring section 7. A slot 9 is formed between adjacent snap rings 8. The upper end of the lower connecting pipe 3 is inserted into the connecting cylinder 1 from the lower end of the connecting cylinder 1 and is threadedly connected to the connecting cylinder 1. The inner thread is provided inside the lower connecting pipe 3. The inner sleeve 5 is located inside the connecting cylinder 1 and between the upper connecting pipe 2 and the lower connecting pipe 3. A plurality of circles of claw fingers 10 are provided inside the inner sleeve 5. Each circle of claw fingers 10 corresponds to a slot 9. Each circle of claw fingers 10 includes a plurality of claw fingers 10 evenly arranged in a ring. One end of the claw finger 10 is fixedly connected to the inner wall of the inner sleeve 5, and the other end is snapped into the corresponding slot 9. Before connecting the square piles, the inner sleeve 5 is loaded into the connecting cylinder 1 from the lower end of the connecting cylinder 1, then the lower connecting pipe 3 is inserted into the lower end of the connecting cylinder 1 and is threadedly connected to the connecting cylinder 1, and the threaded section 6 of the central column 4 is screwed into the lower end of the upper connecting pipe 2. When connecting the square piles, the upper connecting pipe 2 is threadedly connected to the main reinforcement 15 with threads pre-processed on the upper square pile, and the lower connecting pipe 3 that has been connected to the connecting cylinder 1 as a whole is threadedly connected to the main reinforcement 15 with threads pre-processed on the lower square pile. After all the connectors are pre-installed, the two square piles are brought closer, the snap ring section 7 of the central column 4 is inserted into the connecting cylinder 1, and then continuously inserted into the inner sleeve 5. Finally, each circle of claw fingers 10 is overcome in sequence, so that the claw fingers 10 are deformed, and the claw fingers 10 are respectively snapped into the corresponding slots 9 to complete the connection of the square piles. Due to the provision of multiple circles of claw fingers 10 and multiple slots 9, the anti-pulling performance of the connector is effectively improved. At the same time, since the lower end of the upper connecting pipe 2 and the upper end of the lower connecting pipe 3 are both located inside the connecting cylinder 1, the anti-shearing performance of the connector is correspondingly improved.

[0015] Further, the inner sleeve 5 is threadedly connected to the connecting cylinder 1.

[0016] Further, a process groove 11 with a regular hexagon cross-section is provided at the lower end of the inner sleeve 5, which is convenient for using tools to rotate the inner sleeve 5 to threadedly connect the inner sleeve 5 to the connecting cylinder 1.

[0017] Further, a retaining ring 12 is fixedly connected inside the connecting cylinder 1. The retaining ring 12 is located between the upper connecting pipe 2 and the inner sleeve 5. The retaining ring 12 restricts the positions of the upper connecting pipe 2 and the inner sleeve 5 inside the connecting cylinder 1.

[0018] Further, a nut 13 is fixedly connected to the upper connecting pipe 2, and a nut 13 is fixedly connected to the lower connecting pipe 3. This facilitates the use of tools to rotate the upper connecting pipe 2 and the lower connecting pipe 3.

[0019] Further, the upper surface and the lower surface of the snap ring 8 are smoothly transitioned. When the snap ring section 7 is inserted into the inner sleeve 5, the snap ring 8 squeezes the claw 10 to deform until the last circle of the claw 10 is caught in the lowermost slot 9. For a more secure connection, the claw 10 can be processed to be inclined downward, further improving the anti-pulling performance of the connecting member.

[0020] It is worth mentioning that the technical features such as nuts involved in the patent application of the present utility model should be regarded as the prior art. The specific structures, working principles, and possible control methods and spatial arrangement methods of these technical features can be selected conventionally in the art and should not be regarded as the inventive points of the patent of the present utility model. The patent of the present utility model will not be further specifically elaborated.

[0021] The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present utility model without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present utility model through logical analysis, reasoning, or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. Concrete square pile spring clip connector, characterized in that: The cam is provided with a plurality of threads which are connected to the end of the cam, and the plurality of threads are connected to the cam, wherein the plurality of threads are connected to the cam, and the plurality of threads are connected to the cam.

2. The concrete square pile spring-clip connector according to claim 1, characterized in that: The inner sleeve is threadedly connected to the connecting tube.

3. The concrete square pile spring-clip connector according to claim 2, characterized in that: The lower end of the inner sleeve is provided with a process groove with a regular hexagonal cross section.

4. The concrete square pile spring-clip connector according to claim 3, characterized in that: A retaining ring is fixedly connected inside the connecting tube, and the retaining ring is located between the upper connecting tube and the inner sleeve.

5. The concrete square pile spring-clip connector according to claim 4, characterized in that: The upper connecting pipe is fixedly connected with a nut, and the lower connecting pipe is fixedly connected with a nut.

6. The concrete square pile spring-clip connector according to claim 1, characterized in that: The upper surface and the lower surface of the clamping ring are smoothly transitioned.

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