Square pile u-shaped connector
By installing square posts inside the U-shaped connector and using fastener assemblies to limit the positions of square posts of different sizes, the problems of material procurement and unstable connection in the prior art are solved, and a stable and economical connection effect is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU LIANPU BUILDING MATERIALS TECH CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-06-23
AI Technical Summary
Existing U-shaped connectors for square piles require the selection of corresponding sizes based on the different sizes of square piles, which increases material procurement and management costs, and also results in unstable connections and insufficient installation feasibility.
The square piles are installed in the inner cavity of a detachable U-shaped connector, and the top and sides of square piles of different sizes are limited and fixed by fasteners including pressure plates, guide rods, positioning rings, threaded rods and limit nuts.
It achieves stable connection of square piles of different sizes, reduces material procurement and management costs, and improves the stability and strength of the connection.
Smart Images

Figure CN224395791U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of square pile U-shaped connector technology, and in particular to a square pile U-shaped connector. Background Technology
[0002] A square pile U-shaped connector is a metal component used to connect square piles or square tubes, and is commonly used in construction, bridge railings and other structural engineering projects.
[0003] Currently, when using a U-shaped connector to connect two square piles, first ensure that the inner diameter of the U-shaped connector is slightly larger than the outer diameter of the square pile (so that the two square piles can fit together). Then, insert the ends of the two square piles into the two ends of the U-shaped connector. Next, tighten the connector with high-strength bolts and anti-loosening washers through the pre-drilled holes (to ensure a firm connection). However, in the actual connection process, it is necessary to select a suitable size U-shaped connector based on the different sizes of the square piles to ensure the stability of the connection (the inner diameter of the U-shaped connector and the outer diameter of the square pile must fit tightly to avoid loosening or slippage), the uniformity of stress distribution (size mismatch may lead to local stress concentration, reducing the load-bearing capacity of the square pile), and the feasibility of installation (a U-shaped connector that is too small cannot fit into the square pile, while a connector that is too large will result in an unstable fixation). If the project involves square piles of various sizes (such as 40×40 mm, 50×50 mm, or 60×60 mm), it is necessary to purchase U-shaped connectors of the corresponding size, which increases the material procurement and management costs. Utility Model Content
[0004] To overcome the above deficiencies, this utility model provides a square pile U-shaped connector, which aims to improve the problems in the prior art.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a square post U-shaped connector, comprising:
[0006] The U-shaped connector has two square posts that can be detachably installed inside the cavity;
[0007] The fastener is located on the outside of the U-shaped connector. It can be used to limit and fix the top and sides of two square piles of different sizes.
[0008] As a further description of the above technical solution:
[0009] The fasteners include a pressure plate, a pressure plate that is slidably mounted on the top of the U-shaped connector, and symmetrically provided receiving grooves that match the pressure plate on the top of the U-shaped connector. Two guide tubes are symmetrically fixedly mounted on both sides of the U-shaped connector, and guide rods are slidably mounted in the inner cavities of the multiple guide tubes. The top of the guide rods is fixedly connected to the bottom of the pressure plate.
[0010] As a further description of the above technical solution:
[0011] A positioning ring is fixedly installed on one side of multiple guide tubes. A threaded rod is slidably installed in the inner cavity of the positioning ring. The top of the threaded rod and the bottom of the pressure plate are rotatably connected by a rotating shaft. The outer wall of the threaded rod is fitted with a limit nut through threaded engagement. Multiple limit nuts are located directly below multiple positioning rings.
[0012] As a further description of the above technical solution:
[0013] Multiple sliding grooves are symmetrically opened on both sides of the bottom of the pressure plate, and support blocks for supporting the pressure plate are slidably installed in the inner cavity of the sliding grooves.
[0014] As a further description of the above technical solution:
[0015] A rubber pad is fixedly installed at the bottom of the pressure plate, and the bottom of the rubber pad has anti-slip texture.
[0016] As a further description of the above technical solution:
[0017] The U-shaped connector has threaded holes on both sides. A threaded post is installed in the inner cavity of the threaded hole through threaded engagement. A positioning plate for clamping the side wall of the counterweight is rotatably installed at one end of the threaded post.
[0018] This utility model has the following beneficial effects:
[0019] In this invention, the top and sides of two square piles of different sizes can be limited and fixed by the fastener, thereby limiting the square piles of different sizes. When limiting square piles of different sizes, there is no need to purchase U-shaped connectors of corresponding sizes, which reduces material procurement and management costs. Attached Figure Description
[0020] Figure 1 This is a perspective view of the present utility model;
[0021] Figure 2 This is an assembly drawing of the two square piles of this utility model;
[0022] Figure 3 This is an assembly drawing of the U-shaped connector and pressure plate of this utility model;
[0023] Figure 4 This is an assembly drawing of the U-shaped connector and positioning plate of this utility model;
[0024] Figure 5 This utility model Figure 3 Enlarged view of the structure at point A in the middle.
[0025] Legend:
[0026] 1. U-shaped connector; 2. Pressure plate; 3. Threaded rod; 4. Threaded post; 5. Guide rod; 6. Guide tube; 7. Positioning plate; 8. Support block; 9. Positioning ring; 10. Limiting nut. Detailed Implementation
[0027] 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.
[0028] Reference Figure 1-5 One embodiment of this utility model is a square post U-shaped connector, comprising:
[0029] The U-shaped connector 1 has two square posts that can be detachably installed inside its cavity. When the two square posts need to be connected, first insert the two square posts into the interior of the U-shaped connector 1 until the insertion ends of the two square posts fit together (this is existing technology and will not be described in detail here).
[0030] One end of the square stake has multiple through holes, while the other end has multiple through posts that fit the through holes. When two square stakes are simultaneously inserted into the cavity of the U-shaped connector 1 and their inserted ends are aligned, multiple through posts of one square stake are simultaneously inserted into the cavities of multiple through holes of the other square stake (e.g., ...). Figure 2 As shown), this prevents the end of the two square piles located in the inner cavity of the U-shaped connector 1 from tilting up when the center of gravity of the two square piles is close to the suspended end, thereby improving the stability of the two square piles in the inner cavity of the U-shaped connector 1 (this is existing technology and will not be elaborated on here).
[0031] The fixing components include a pressure plate 2, a pressure plate 2 slidably mounted on the top of the U-shaped connector 1, two guide tubes 6 symmetrically fixed on both sides of the U-shaped connector 1, and guide rods 5 slidably mounted in the inner cavities of the multiple guide tubes 6. The top of the guide rods 5 is fixedly connected to the bottom of the pressure plate 2. The guide rods 5 can move up and down along their own axis in the inner cavity of the guide tubes 6. At the same time, through the cooperation of multiple guide rods 5 and multiple guide tubes 6, the pressure plate 2 is prevented from shifting or shaking when moving up and down, thus improving the stability of the pressure plate 2 moving up and down.
[0032] The top of the U-shaped connector 1 is symmetrically provided with receiving grooves that are adapted to the pressure plate 2. The bottom sides of the pressure plate 2 are symmetrically provided with multiple sliding grooves. Support blocks 8 for supporting the pressure plate 2 are slidably installed in the inner cavity of the sliding grooves. Before inserting the two square posts into the U-shaped connector 1, the pressure plate 2 is first pushed upward until the pressure plate 2 located in the inner cavity of the receiving groove moves directly above the U-shaped connector 1. Then, the multiple support blocks 8 are pulled in sequence. After the multiple support blocks 8 are pulled out from the receiving groove, the pushing force on the pressure plate 2 is released. The pressure plate 2 moves downward under the action of gravity until the bottom of the multiple support blocks 8 contacts the top of the U-shaped connector 1. Thus, the multiple support blocks 8 achieve the function of supporting the pressure plate 2, avoiding the pressure plate 2 from obstructing the insertion of the two square posts into the U-shaped connector 1, so that the two square posts can be smoothly inserted into the inner cavity of the U-shaped connector 1.
[0033] A positioning ring 9 is fixedly installed on one side of multiple guide tubes 6. A threaded rod 3 is slidably installed in the inner cavity of the positioning ring 9. The top of the threaded rod 3 and the bottom of the pressure plate 2 are rotatably connected by a rotating shaft. The outer wall of the threaded rod 3 is fitted with a limit nut 10 through threaded engagement. Multiple limit nuts 10 are located directly below multiple positioning rings 9. A rubber pad is fixedly installed on the bottom of the pressure plate 2. When the pressure plate 2 moves up and down along the axis of the guide rod 5, multiple threaded rods 3 move with the pressure plate 2. When two square posts are inserted into the U-shaped connector 1 and the insertion ends are in contact with each other, multiple support blocks 8 are pushed back until multiple support blocks 8 are completely moved into the inner cavity of the sliding groove. At this time, the pressure plate 2 is in Under the influence of gravity, it moves into the inner cavity of the receiving groove until the rubber pad at the bottom of the pressure plate 2 contacts the top of the two square posts simultaneously. Then, the limiting nut 10 is rotated in sequence. With the engagement of the thread, the limiting nut 10 moves closer to the positioning ring 9 until the top of the limiting nut 10 contacts the bottom of the positioning ring 9. The limiting nut 10 is then rotated continuously, thereby applying a downward thrust along its own axis to the threaded rod 3, thus moving the pressure plate 2 downward and compressing the rubber pad, so that the bottom of the rubber pad fits tightly against the top of the two square posts, and continuously applying a large downward pressure to the two square posts, thereby limiting the two square posts located in the inner cavity of the U-shaped connector 1.
[0034] The bottom of the rubber pad has anti-slip texture, which increases the friction between the rubber pad and the top of the two square piles, preventing the two square piles from separating when the ends of the two piles are subjected to tensile force, and further improving the stability of the connection between the two square piles.
[0035] The U-shaped connector 1 has threaded holes on both sides. Threaded posts 4 are installed in the inner cavity of the threaded holes through threaded engagement. A positioning plate 7 for clamping the side walls of the square piles is rotatably installed at one end of the threaded post 4. After the two square piles are limited from the top by the pressure plate 2, the two threaded posts 4 are rotated in sequence to bring the positioning plate 7 closer to the side walls of the square piles. Before the positioning plate 7 contacts the side walls of the square piles, the positioning plate 7 is held and its angle is controlled so that the bottom of the positioning plate 7 is parallel to the bottom of the square piles. Then, the threaded posts 4 are rotated continuously until the positioning plate 7 contacts the side walls of the two square piles simultaneously. The threaded posts 4 cannot be rotated continuously, and the positioning plate 7 is moved continuously until one end of the positioning plate 7 is tightly fitted to the outer walls of the two square piles. This achieves clamping of the two square piles on both sides by the two positioning plates 7, increases the friction on the outer walls of the two square piles, further limits the two square piles, prevents the two square piles from separating, and further improves the stability and firmness of the connection between the two square piles.
[0036] The positioning plate 7, pressure plate 2, threaded rod 3, and limiting nut 10 constitute the fixing component. The fixing component can limit and fix the top and sides of two square piles of different sizes, thereby limiting the square piles of different sizes. When limiting the square piles of different sizes, there is no need to purchase the corresponding size U-shaped connector 1, which reduces the material procurement and management costs.
[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A U-shaped connector for square piles, characterized in that: include U-shaped connector (1), with two square posts detachably installed in the inner cavity; The fastener is set outside the U-shaped connector (1). The fastener can limit and fix the top and sides of two square piles of different sizes.
2. The U-shaped connector for a square post according to claim 1, characterized in that: The fixing component includes a pressure plate (2). The pressure plate (2) is slidably installed on the top of the U-shaped connector (1). The top of the U-shaped connector (1) is symmetrically provided with receiving grooves that are compatible with the pressure plate (2). Two guide tubes (6) are symmetrically fixedly installed on both sides of the U-shaped connector (1). Guide rods (5) are slidably installed in the inner cavity of the multiple guide tubes (6). The top of the guide rods (5) is fixedly connected to the bottom of the pressure plate (2).
3. A U-shaped connector for square piles according to claim 2, characterized in that: A positioning ring (9) is fixedly installed on one side of multiple guide tubes (6). A threaded rod (3) is slidably installed in the inner cavity of the positioning ring (9). The top of the threaded rod (3) and the bottom of the pressure plate (2) are rotatably connected by a rotating shaft. The outer wall of the threaded rod (3) is fitted with a limit nut (10) by thread engagement. Multiple limit nuts (10) are located directly below multiple positioning rings (9).
4. A U-shaped connector for a square post according to claim 2, characterized in that: The bottom sides of the pressure plate (2) are symmetrically provided with multiple sliding grooves, and a support block (8) for supporting the pressure plate (2) is slidably installed in the inner cavity of the sliding groove.
5. A U-shaped connector for a square post according to claim 2, characterized in that: A rubber pad is fixedly installed at the bottom of the pressure plate (2), and the bottom of the rubber pad is provided with anti-slip texture.
6. A U-shaped connector for square piles according to claim 1, characterized in that: The U-shaped connector (1) has threaded holes on both sides. A threaded post (4) is installed in the inner cavity of the threaded hole by threaded engagement. A positioning plate (7) for clamping the side wall of the square pile is rotatably installed at one end of the threaded post (4).