Square pile with built-in extending and supporting functions
By designing square piles with built-in extension support functions, and utilizing a combination of support and positioning devices, the problem of square piles being unable to extend was solved, enabling flexible adjustment and stable fixing of the pile length.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-04-03
AI Technical Summary
The existing hollow square piles used in water conservancy projects cannot be extended at the ends, which limits their use.
A square pile with built-in extension support function was designed. Through the combination of support device, sliding device and positioning device, the sleeve plate can be slidably adjusted on the outer ring of the square pile. The sleeve plate is fixed at a specified height by the cooperation of positioning rod and insertion rod.
This design allows for adjustable length of the square piles, preventing the casing from falling off and improving the flexibility and stability of the square piles.
Smart Images

Figure CN224078146U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of square pile technology, specifically a square pile with built-in extension support function. Background Technology
[0002] Square piles are piles with a square or rectangular cross-section. In the construction of water conservancy facilities such as dams, reservoirs, and hydropower stations, square piles are used for foundation reinforcement and flood control. They can enhance the stability and durability of water conservancy facilities and ensure their safe operation under extreme weather conditions.
[0003] For example, the Chinese patent publication number CN218436997U, concerning high-strength hollow concrete square piles with pull-out resistance, relates to the field of hollow square pile design technology for buildings. It includes a hollow square pile protective shell, a reinforcement and insulation unit, and an auxiliary support unit. The protective shell has auxiliary support units positioned on its left and right sides and lower surface. A circular through-hole is formed on the lower surface of the protective shell, extending into the shell. The protective shell is rectangular, and a rectangular hole is formed on its upper side, extending into the shell. The reinforcement and insulation unit includes a reinforcing column, a reinforcing column fixing ring, an outer metal mesh, an inner metal mesh, a reinforcing frame, a snap-fit assembly, and a reinforcing cover plate. The bottom end of the reinforcing frame is fixedly connected to the bottom surface of the hollow square pile protective shell at the edge of the circular through-hole.
[0004] The square piles in the aforementioned patent can only achieve the purpose of high extraction performance when in use. However, the existing hollow square piles used in water conservancy projects cannot be extended at their ends because the length of the square pile is fixed. Therefore, an improved device is needed to address the above problem. Utility Model Content
[0005] The purpose of this utility model is to provide a square pile with built-in extension support function to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a square pile with built-in extension support function, including a support device, a sliding device slidably sleeved on the top of the support device, a positioning device fixedly installed on the outer ring of the sliding device, the positioning device including a plug rod, a U-shaped slide, a threaded rod and a support base plate, the threaded rod being rotatably installed on the top of the support base plate, the U-shaped slide being threadedly sleeved on the outer ring of the threaded rod, and the plug rod being symmetrically fixedly installed at both ends of the bottom of the U-shaped slide.
[0007] Preferably, the sliding device includes a sleeve plate, a positioning rod, an anti-detachment plate, a synchronizing rod, and an extension rod. The extension rods are symmetrically fixedly installed on the bottom ends of both sides of the sleeve plate. The anti-detachment plate is fixedly installed on the end of the extension rod away from the sleeve plate. The synchronizing rod is slidably sleeved between the two extension rods. The positioning rod is symmetrically fixedly installed on the side end of the synchronizing rod near the sleeve plate.
[0008] Preferably, the support device includes a positioning frame, a square pile, and square holes. The square holes are equidistantly opened inside both sides of the square pile, and the positioning frame is fixedly installed on the top of the square pile.
[0009] Preferably, the sleeve plate is slidably sleeved on the outer ring of the square pile, and the supporting base plate is fixedly installed at the bottom front end of the sleeve plate.
[0010] Preferably, a circular hole is provided on the top of the positioning rod near the extension rod, and the inner wall of the U-shaped carriage is in contact with the outer surface of the sleeve plate.
[0011] Preferably, the bottom end of the sleeve plate has a through hole, and the inner surface of the through hole is in contact with the outer surface of the square pile.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] In use, this device allows the sleeve plate to slide on the outer ring of the square pile, facilitating its extension and adjustment. Simultaneously, the positioning rod slides into the square hole to secure the sleeve plate. A plug rod is inserted into the positioning rod to further secure it, preventing it from falling out of the square hole. Furthermore, a synchronizing rod slides on the extension rod to support the positioning rod's displacement, preventing it from falling off. This completes the sliding adjustment of the sleeve plate on the square pile. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the positioning device structure of this utility model;
[0016] Figure 3 This is a partial cross-sectional schematic diagram of the sliding device of this utility model;
[0017] Figure 4 This is a schematic diagram of the support device structure of this utility model.
[0018] In the diagram: 1-positioning device, 2-sliding device, 3-supporting device, 4-insertion rod, 5-U-shaped slide, 6-threaded rod, 7-supporting base plate, 8-sleeve plate, 9-positioning rod, 10-anti-detachment plate, 11-synchronizing rod, 12-extension rod, 13-positioning frame, 14-square stake, 15-square hole. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figure 1-4 An embodiment of this utility model provides: a square pile with built-in extension support function, including a support device 3, a sliding device 2 slidably sleeved on the top of the support device 3, a positioning device 1 fixedly installed on the outer ring of the sliding device 2, the positioning device 1 including a plug rod 4, a U-shaped slide 5, a threaded rod 6 and a support base plate 7, the threaded rod 6 is rotatably installed on the top of the support base plate 7, the U-shaped slide 5 is threadedly sleeved on the outer ring of the threaded rod 6, and the plug rod 4 is symmetrically fixedly installed at both ends of the bottom of the U-shaped slide 5.
[0021] The sliding device 2 includes a sleeve plate 8, a positioning rod 9, an anti-detachment plate 10, a synchronizing rod 11, and an extension rod 12. The extension rod 12 is symmetrically fixedly installed on both sides of the bottom end of the sleeve plate 8. The anti-detachment plate 10 is fixedly installed on the end of the extension rod 12 away from the sleeve plate 8. The synchronizing rod 11 is slidably sleeved between the two extension rods 12. The positioning rod 9 is symmetrically fixedly installed on the side end of the synchronizing rod 11 near the sleeve plate 8. By setting the anti-detachment plate 10, the synchronizing rod 11 can be prevented from falling off the extension rod 12.
[0022] The support device 3 includes a positioning frame 13, a square pile 14 and a square hole 15. The square holes 15 are equally spaced inside both sides of the square pile 14. The positioning frame 13 is fixedly installed on the top of the square pile 14. The positioning frame 13 can prevent the sleeve plate 8 from falling off.
[0023] The sleeve plate 8 is slidably sleeved on the outer ring of the square pile 14, and the support base plate 7 is fixedly installed at the bottom front end of the sleeve plate 8, which can support the operation of the support base plate 7.
[0024] A round hole is opened on the top of the positioning rod 9 near the extension rod 12. The inner wall of the U-shaped carriage 5 fits against the outer surface of the sleeve plate 8, which can ensure that the U-shaped carriage 5 moves up and down in a straight line.
[0025] The bottom end of the sleeve plate 8 is provided with a through hole, and the inner surface of the through hole is in contact with the outer surface of the square pile 14, allowing the sleeve plate 8 to slide up and down on the surface of the square pile 14.
[0026] Working Principle: In use, the square stake 14 is first fixedly installed in the designated working area, allowing the sleeve plate 8 to be adjusted vertically. Simultaneously, the sleeve plate 8 can be slid up and down to the designated area, aligning the positioning rod 9 horizontally with the square holes 15 at different heights on the square stake 14. Then, the synchronizing rod 11 is moved closer to the inside of the sleeve plate 8, allowing the positioning rod 9 to be inserted into the square hole 15, thus limiting the sleeve plate 8 to the designated height. Subsequently, when the positioning rod 9 is fully inserted into the square hole 15, the round hole on the positioning rod 9 is vertically aligned with the insertion rod 4. At this point, the threaded rod 6 can be rotated, causing the U-shaped slide 5 to move downwards until the insertion rod 4 is inserted into the round hole inside the positioning rod 9, thus fixing and securing the positioning rod 9 and preventing it from moving out of the sleeve plate 8. This completes the adjustment of the sleeve plate 8. During use, the sleeve plate 8 can slide on the outer ring of the square stake 14, allowing for adjustment of the extension length of the sleeve plate 8. The positioning frame 13 prevents the sleeve plate 8 from falling off the square post 14. Simultaneously, the slidable connection of the synchronous rod 11 to the extension rod 12 supports the positioning rod 9 to slide in a straight line, improving the alignment accuracy between the positioning rod 9 and the square hole 15. When the positioning rod 9 is inserted into the square hole 15, the sleeve plate 8 is secured to the square post 14. Then, the threaded rod 6 is screwed down, causing the insertion rod 4 to be inserted downwards into the positioning rod 9, thus securing the positioning rod 9 within the square hole 15 and preventing it from falling off. When the sleeve plate 8 needs readjustment, the threaded rod 6 is screwed in the opposite direction, causing the U-shaped slide 5 to move upwards, causing the insertion rod 4 to move out of the positioning rod 9. The positioning rod 9 can then be removed from the square hole 15, releasing the sleeve plate 8. The sleeve plate 8 can then be adjusted up and down until it reaches the appropriate position. Finally, the positioning rod 9 is inserted into the square holes 15 at different heights to re-secure the sleeve plate 8.
[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A square pile with built-in extension support function, comprising a support device (3), wherein a sliding device (2) is slidably sleeved on the top end of the support device (3), and a positioning device (1) is fixedly installed on the outer ring of the sliding device (2), characterized in that: The positioning device (1) includes a plug rod (4), a U-shaped slide (5), a threaded rod (6), and a support base plate (7). The threaded rod (6) is rotatably installed on the top of the support base plate (7). The U-shaped slide (5) is threaded onto the outer ring of the threaded rod (6). The plug rod (4) is symmetrically fixed at both ends of the bottom of the U-shaped slide (5).
2. A square pile with built-in extension support function according to claim 1, characterized in that: The sliding device (2) includes a sleeve plate (8), a positioning rod (9), an anti-detachment piece (10), a synchronizing rod (11), and an extension rod (12). The extension rod (12) is symmetrically fixedly installed on both sides of the bottom end of the sleeve plate (8). The anti-detachment piece (10) is fixedly installed on the end of the extension rod (12) away from the sleeve plate (8). The synchronizing rod (11) is slidably sleeved between the two extension rods (12). The positioning rod (9) is symmetrically fixedly installed on the side end of the synchronizing rod (11) near the sleeve plate (8).
3. A square pile with built-in extension support function according to claim 2, characterized in that: The support device (3) includes a positioning frame (13), a square pile (14) and a square hole (15). The square holes (15) are equidistantly opened inside both sides of the square pile (14), and the positioning frame (13) is fixedly installed on the top of the square pile (14).
4. A square pile with built-in extension support function according to claim 3, characterized in that: The sleeve (8) is slidably sleeved on the outer ring of the square pile (14), and the supporting base plate (7) is fixedly installed at the bottom of the front end of the sleeve (8).
5. A square pile with built-in extension support function according to claim 4, characterized in that: The positioning rod (9) has a round hole at the top near the extension rod (12), and the inner wall of the U-shaped carriage (5) is in contact with the outer surface of the sleeve plate (8).
6. A square pile with built-in extension support function according to claim 5, characterized in that: The bottom end of the sleeve plate (8) is provided with a through hole, and the inner surface of the through hole is in contact with the outer surface of the square pile (14).
Citation Information
Patent Citations
Anti-pulling high-strength concrete hollow square pile
CN218436997U