Connecting structure for concrete precast pile

Abstract

The utility model provides a connecting structure for a concrete precast pile. The connecting structure comprises a fixed sleeve, a bolt structure, an integrated locking and clamping structure, a connecting sleeve, a jacking spring and a middle sleeve, the jacking spring and the integrated locking and clamping structure are both arranged in the fixed sleeve, a boss structure used for limiting the jacking spring is arranged at the bottom of the inner wall of the fixed sleeve, the integrated locking and clamping structure is detachably connected with the top of the jacking spring, and the middle sleeve is in threaded fit with a top plate of the fixed sleeve; the top of the bolt structure is in threaded connection with the connecting sleeve, and the bottom of the bolt structure can be inserted into the inner side of the integrated locking and clamping structure. According to the connecting structure for the concrete precast pile, the problems that time and labor are wasted when a worker installs the connecting structure due to the fact that a locking plate of an elastic clamping type connecting device adopted in the related technology is arranged in a split mode and is not easy to install, and a plug pin is arranged in a smooth thread mode and is easy to release are solved.

Description

Technical Field

[0001] This utility model belongs to the field of precast pile joint technology, and in particular relates to a connection structure for precast concrete piles. Background Technology

[0002] Mechanically connected prestressed concrete piles are increasingly widely used in prestressed concrete pile construction. The main function of the mechanical connection device is to quickly and firmly connect two sections of prestressed concrete piles together, ensuring the continuity and stability of the entire pile body. This mechanical device completes the pile connection in a short time, avoiding the cumbersome steps of traditional welding. Through mechanical components, the connection between piles can withstand strong axial tensile and compressive forces, ensuring the structural integrity of the prestressed piles during construction and use. The spring-loaded clamp connection device is commonly used in engineering. However, the spring-loaded clamp connection device used in related technologies suffers from complex internal structures, difficult-to-install segmented locking plates, and easy disengagement of the smooth threaded pins, leading to time-consuming and labor-intensive installation for workers. Furthermore, even slight deviations can significantly affect the connection quality of the piles and the overall quality of pile foundation construction. Summary of the Invention

[0003] In view of this, the present invention aims to at least partially solve one of the related technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A connection structure for precast concrete piles includes a fixing sleeve, a pin structure, an integrated locking structure, a connecting sleeve, a tightening spring, and an intermediate sleeve.

[0006] The tightening spring and the integrated locking structure are both located inside the fixed sleeve. The bottom of the inner wall of the fixed sleeve is provided with a boss structure for limiting the tightening spring. The integrated locking structure is detachably connected to the top of the tightening spring. The intermediate sleeve is threadedly engaged with the top plate of the fixed sleeve.

[0007] The top of the pin structure is threadedly connected to the connecting sleeve, and the bottom of the pin structure can be inserted into the inside of the integrated locking structure.

[0008] The integrated locking structure includes a mounting sleeve, a locking part, and a mounting structure. The mounting sleeve is disposed on the bottom end face of the locking part and is integrally connected to the locking part. The mounting sleeve is connected to the tightening spring through the mounting structure.

[0009] Furthermore, the locking part includes multiple locking plates, which are evenly arranged circumferentially. A gap is provided between two adjacent locking plates to provide space for radial elastic deformation of the locking plates. The bottoms of two adjacent locking plates are integrally connected, and the bottom end face of the locking plate is integrally connected to the mounting sleeve.

[0010] Furthermore, the mounting structure includes a plurality of balls, which are evenly arranged circumferentially on the mounting sleeve.

[0011] Furthermore, the pin structure includes a connecting part and a insert rod part. The top of the insert rod part is integrally connected to the connecting part. The connecting part is threadedly engaged with the connecting sleeve. The bottom of the insert rod part is provided with an anti-slip protrusion. The outer wall of the insert rod part is provided with a reverse toothed thread that can engage with the inner wall of the intermediate sleeve.

[0012] Furthermore, the clamping spring is a conical spring.

[0013] Furthermore, it also includes a sliding guide structure, which includes a fixed ring and multiple guide components. The multiple guide components are evenly arranged circumferentially. The top of the guide component is connected to the fixed ring, and the bottom of the guide component abuts against the steel bar pier. The upper end face of the fixed ring is provided with a groove that can cooperate with the installation sleeve.

[0014] Furthermore, the guide assembly is a spring-loaded telescopic rod.

[0015] Furthermore, both the connecting part and the insert part are solid.

[0016] Compared with the prior art, the connection structure for precast concrete piles described in this utility model has the following advantages:

[0017] 1. The locking mechanism and mounting sleeve are integrally formed, significantly reducing the number of parts and assembly steps. During installation, it only needs to be inserted into the tightening spring as a whole. The integrated connection design between the bottom of the locking plate and the mounting sleeve avoids problems such as locking plate deflection or uneven gaps caused by separate assembly.

[0018] 2. The anti-slip protrusions on the insertion rod form frictional contact with the inner side of the locking plate, which, combined with the one-way locking characteristic of the reverse toothed thread, creates a wedge-shaped structure with the steep angle of the non-working surface and the gentle angle of the working surface of the reverse toothed thread. When the insertion rod is subjected to force, the thread meshing surface generates a self-locking effect, and the direction of friction is perpendicular to the direction of load, effectively resisting reverse rotation under vibration or impact.

[0019] 3. The groove on the fixing ring and the guide component form a vertical guide channel. When the installation sleeve is pressed down along the channel, it automatically corrects its posture and avoids jamming caused by tilting. It is especially suitable for blind installation in narrow spaces. Attached Figure Description

[0020] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0021] Figure 1 This is a schematic diagram of a connection structure for precast concrete piles according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the insertion rod structure according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the fixed sleeve structure described in an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the combined structure of the tightening spring and the integrated locking mechanism described in this embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the sliding guide structure described in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Connecting sleeve; 210. Insert rod part; 211. Anti-slip protrusion; 300. Fixing sleeve; 400. Intermediate sleeve; 500. Tightening spring; 610. Locking plate; 620. Mounting sleeve; 630. Connecting structure; 710. Fixing ring; 720. Guide assembly. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] A connection structure for precast concrete piles, such as Figure 1 As shown, the device includes a fixed sleeve 300, a pin structure, an integrated locking structure, a connecting sleeve 100, a tightening spring 500, and an intermediate sleeve 400. The tightening spring 500 and the integrated locking structure are both located inside the fixed sleeve 300. The bottom of the inner wall of the fixed sleeve 300 has a boss structure for limiting the tightening spring 500. The integrated locking structure is detachably connected to the top of the tightening spring 500. The intermediate sleeve 400 is threadedly engaged with the top plate of the fixed sleeve 300. The top of the pin structure is threadedly connected to the connecting sleeve 100, and the bottom of the pin structure can be inserted into the inner side of the integrated locking structure. The tightening spring 500 is a conical spring.

[0033] The integrated locking structure includes a mounting sleeve 620, a locking part, and a mounting structure 630. The mounting sleeve 620 is located on the bottom end face of the locking part and is integrally connected to the locking part. The mounting sleeve 620 is connected to the tightening spring 500 through the mounting structure 630. The locking part and the mounting sleeve 620 are integrally formed, which greatly reduces the number of parts and assembly steps. During installation, it only needs to be inserted into the tightening spring 500 as a whole. The integral connection design between the bottom of the locking plate 610 and the mounting sleeve 620 avoids the problems of deflection or uneven gap of the locking plate 610 caused by separate assembly.

[0034] The locking part includes multiple locking pieces 610, which are evenly arranged circumferentially. There is a gap between two adjacent locking pieces 610 to provide space for radial elastic deformation of the locking pieces 610. The bottoms of two adjacent locking pieces 610 are integrally connected, and the bottom end face of the locking piece 610 is integrally connected to the mounting sleeve 620.

[0035] The mounting structure 630 includes multiple balls, which are evenly arranged circumferentially on the mounting sleeve 620.

[0036] The pin structure includes a connecting part and a insertion rod 210. The top of the insertion rod 210 is integrally connected to the connecting part, and the connecting part is threaded into the connecting sleeve 100. The bottom of the insertion rod 210 is provided with an anti-slip protrusion 211, and the outer wall of the insertion rod 210 is provided with a reverse toothed thread that can mate with the inner wall of the intermediate sleeve 400. Both the connecting part and the insertion rod 210 are solid. The anti-slip protrusion 211 of the insertion rod 210 forms frictional contact with the inner side of the locking piece 610, which, combined with the one-way locking characteristic of the reverse toothed thread, forms a wedge structure with the steep angle of the non-working surface of the reverse toothed thread and the gentle angle of the working surface. When the insertion rod 210 is subjected to force, the thread meshing surface generates a self-locking effect, and the direction of friction is perpendicular to the load direction, effectively resisting reverse rotation under vibration or impact.

[0037] When in use, the reinforcing bar end is inserted into the bottom of the fixing sleeve 300, and the bottom of the spring 500 is engaged with the boss structure on the inner wall of the fixing sleeve 300; the other reinforcing bar end is inserted into the end of the connecting sleeve 100 away from the pin structure.

[0038] It also includes a sliding guide structure, which comprises a fixed ring 710 and multiple guide components 720. The guide components 720 are evenly arranged circumferentially. The top of each guide component 720 connects to the fixed ring 710, and the bottom of each guide component 720 abuts against the upper surface of the reinforcing bar. The upper surface of the fixed ring 710 has a groove that mates with the installation sleeve 620. The guide component 720 is a spring-loaded telescopic rod. The spring-loaded telescopic rod is a telescopic tube with a built-in spring; the outer tube encloses the inner rod, with a compression spring sandwiched in between. When pressed, it retracts to buffer the impact; when released, the spring pushes it back to its original position. The groove on the fixed ring 710 and the guide component 720 form a vertical guide channel. When the installation sleeve 620 is pressed down along the channel, it automatically corrects its posture, avoiding jamming caused by tilting, making it particularly suitable for blind installation in confined spaces.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A connection structure for precast concrete piles, characterized in that: It includes a fixed sleeve (300), a pin structure, an integrated locking structure, a connecting sleeve (100), a top-tightening spring (500), and an intermediate sleeve (400); the top-tightening spring (500) and the integrated locking structure are both located inside the fixed sleeve (300), the bottom of the inner wall of the fixed sleeve (300) is provided with a boss structure for limiting the top-tightening spring (500), the integrated locking structure is detachably connected to the top of the top-tightening spring (500), and the intermediate sleeve (400) is threadedly engaged with the top plate of the fixed sleeve (300); The top of the pin structure is threadedly connected to the connecting sleeve (100), and the bottom of the pin structure can be inserted into the inner side of the integrated locking structure. The integrated locking structure includes a mounting sleeve (620), a locking part, and a mounting structure (630). The mounting sleeve (620) is disposed on the bottom end face of the locking part. The mounting sleeve (620) is integrally connected to the locking part. The mounting sleeve (620) is connected to the tightening spring (500) through the mounting structure (630).

2. The connection structure for precast concrete piles according to claim 1, characterized in that: The locking part includes a plurality of locking pieces (610), which are evenly arranged circumferentially. A gap is provided between two adjacent locking pieces (610) to provide space for radial elastic deformation of the locking pieces (610). The bottoms of two adjacent locking pieces (610) are integrally connected, and the bottom end face of the locking piece (610) is integrally connected to the mounting sleeve (620).

3. The connection structure for precast concrete piles according to claim 1, characterized in that: The mounting structure (630) includes a plurality of balls, which are evenly arranged circumferentially on the mounting sleeve (620).

4. A connection structure for precast concrete piles according to any one of claims 1-3, characterized in that: The pin structure includes a connecting part and a plug part (210). The top of the plug part (210) is integrally connected to the connecting part. The connecting part is threadedly engaged with the connecting sleeve (100). The bottom of the plug part (210) is provided with an anti-slip protrusion (211). The outer wall of the plug part (210) is provided with a reverse toothed thread that can engage with the inner wall of the intermediate sleeve (400).

5. A connection structure for precast concrete piles according to claim 4, characterized in that: The clamping spring (500) is a conical spring.

6. A connection structure for precast concrete piles according to claim 4, characterized in that: It also includes a sliding guide structure, which includes a fixed ring (710) and multiple guide components (720). The multiple guide components (720) are evenly arranged circumferentially. The top of the guide component (720) is connected to the fixed ring (710), and the bottom of the guide component (720) abuts against the steel bar pier. The upper end face of the fixed ring (710) is provided with a groove that can cooperate with the installation sleeve (620).

7. A connection structure for precast concrete piles according to claim 6, characterized in that: The guide assembly (720) is a spring-loaded telescopic rod.

8. A connection structure for precast concrete piles according to claim 4, characterized in that: Both the connecting part and the insert part (210) are solid.

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