Hidden type hoisting ring of screw lock prestressed concrete square pile

Abstract

This utility model discloses a screw-locked prestressed concrete square pile with a concealed lifting ring, relating to the field of building engineering technology. It includes a screw-locked prestressed concrete square pile, a concealed groove, and a telescopic lifting ring. The screw-locked prestressed concrete square pile has a concealed groove, within which a telescopic lifting ring is pre-embedded. The telescopic lifting ring comprises a hooked rod cylinder, a straight rod body, and an arc-shaped rod body. This utility model, by creating a concealed groove on the concrete square pile and pre-embedding the telescopic lifting ring within it, allows the telescopic lifting ring to be manually extended before lifting, partially extending out of the concrete square pile. After lifting, the upper part of the telescopic lifting ring automatically retracts into the lower part under gravity, achieving concealment. After the lifting ring is concealed, the lower surface of the upper pile can directly and tightly fit with the upper surface of the lower pile, enhancing the friction between piles, improving stacking stability, avoiding the collision risk caused by the protrusion of traditional lifting rings, and eliminating the need for wooden supports, thus saving on wooden support costs.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically a screw-lock type concealed lifting ring for prestressed concrete square piles. Background Technology

[0002] Screw-locked prestressed concrete square piles are a type of prestressed concrete square pile that uses bolt and nut connections. Essentially, they are a concrete structural system composed of steel bars, concrete, and bolts. Through prestressing technology, they have higher load-bearing capacity and better deformation performance, and are widely used in the field of construction engineering.

[0003] Existing screw-locked prestressed concrete square piles typically have pre-embedded lifting rings to facilitate hoisting and installation by a crane. However, these existing lifting rings are usually exposed on the outside of the pile and cannot be concealed (as shown in the instruction manual). Figure 4 (As shown in the provided physical image), this means that when stacking existing square piles, the lower surface of the upper pile cannot directly adhere to the upper surface of the lower pile. It is necessary to place wooden blocks in the middle, which increases costs. In addition, the contact area between the wooden blocks and the square piles is small, resulting in poor stability. Utility Model Content

[0004] The purpose of this utility model is to provide a screw-lock type concealed lifting ring for prestressed concrete square piles to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A concealed lifting ring for a screw-locked prestressed concrete square pile includes a screw-locked prestressed concrete square pile, a concealed groove, and a telescopic lifting ring. The screw-locked prestressed concrete square pile has a concealed groove, within which a telescopic lifting ring is embedded. The telescopic lifting ring includes a hooked tube, a straight rod, and an arc-shaped rod. Two hooked tubes are arranged side-by-side, facing away from each other. A straight rod is installed inside each hooked tube, and an arc-shaped rod is positioned between the two straight rods, connecting them. An outer end is provided at the connection point between the arc-shaped rod and the two straight rods. An inner end is installed at the bottom of each straight rod. A limiting structure is provided at the top of the hooked tube. A sliding groove is provided on the straight rod, which slides in conjunction with a sliding head located inside the hooked tube. Several pull-out heads are provided on the surface of the straight section of the hooked tube, and several pull-out rods are provided on the surface of the arc-shaped section of the hooked tube.

[0007] As a further embodiment of this utility model: the inner end head is adapted to the inner diameter and shape of the hook rod cylinder.

[0008] As a further improvement of this utility model, the distance between the groove and the inner end is equal to the height of the limiting structure.

[0009] As a further improvement of this utility model, the anti-pull-out head has a gradually decreasing end face size from top to bottom.

[0010] As a further improvement of this utility model, the hidden groove includes a straight rod hidden groove and an arc-shaped rod hidden groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model involves creating a hidden groove in a concrete square pile and pre-embedding a telescopic lifting ring in the groove. Before lifting, the telescopic lifting ring can be manually extended to partially protrude from the concrete square pile. After lifting, the upper part of the telescopic lifting ring will automatically retract into the lower part under the action of gravity, thus achieving concealment. After the lifting ring is concealed, the lower surface of the upper pile can directly and tightly fit with the upper surface of the lower pile, enhancing the friction between the piles, improving stacking stability, avoiding the collision risk caused by the protrusion of traditional lifting rings, and eliminating the need for wooden supports, thus saving the cost of wooden supports.

[0013] 2. This utility model enhances the anchoring effect by setting a hook tube with an anti-pull-out head and an anti-pull-out rod on it. The mechanical interlocking action improves the bonding force between the lifting ring and the concrete, preventing loosening or slippage during hoisting. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a screw-lock prestressed concrete square pile with a concealed lifting ring.

[0015] Figure 2 This is a partial structural cross-sectional view of a screw-locked prestressed concrete square pile with a concealed lifting ring.

[0016] Figure 3 A type of screw-locking prestressed concrete square pile with concealed lifting ring Figure 1 A schematic diagram of the structure of the middle lifting ring.

[0017] Figure 4 A type of screw-locking prestressed concrete square pile with concealed lifting ring Figure 1 Assembly drawing of the curved hook tube and the straight rod body.

[0018] 1. Screw-locked prestressed concrete square pile; 2. Hidden groove; 3. Telescopic lifting ring; 4. Hooked rod tube; 5. Straight rod body; 6. Curved rod body; 7. Outer end; 8. Anti-pull-out head; 9. Anti-pull-out rod; 10. Straight rod body hidden groove; 11. Curved rod body hidden groove; 12. Sliding groove; 13. Sliding head; 14. Inner end; 15. Limiting structure. 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 Figures 1-4 In this embodiment of the utility model, a screw-locked prestressed concrete square pile concealed lifting ring includes a screw-locked prestressed concrete square pile 1, a concealed groove 2, and a telescopic lifting ring 3. The screw-locked prestressed concrete square pile 1 has a concealed groove 2, and a telescopic lifting ring 3 is pre-embedded in the concealed groove 2. The telescopic lifting ring 3 includes a hook cylinder 4, a straight rod body 5, and an arc-shaped rod body 6. Two hook cylinders 4 are arranged side by side and back to back. A straight rod body 5 is arranged inside the hook cylinder 4. An arc-shaped rod body 6 is arranged between the two straight rod bodies 5, and the two straight rod bodies 5 are connected by the arc-shaped rod body 6. An outer end 7 is provided at the connection between the arc-shaped rod body 6 and the two straight rod bodies 5. An inner end 14 is installed at the bottom end of the straight rod body 5. A limit structure 15 is provided at the top of the hook cylinder 4. A sliding groove 12 is provided on the straight rod body 5, and the sliding groove 12 is slidably engaged with a sliding head 13 arranged inside the hook cylinder 4.

[0021] The inner end 14 is matched with the inner diameter and shape of the hook tube 4, which allows the inner end 14 to slide straight up and down the hook tube 4, so that the lifting ring will not shake during extension and retraction.

[0022] The distance between the groove 12 and the inner end 14 is equal to the height of the limiting structure 15. This design allows the inner end 14 to just abut against the limiting structure 15 after the straight rod 5 reaches its maximum extension length, and the slide head 13 to just abut against the top of the groove 12. This makes the connection between the straight rod 5 and the hook rod 4 more secure and able to withstand greater tension.

[0023] The concealed groove 2 includes a straight rod concealed groove 10 and an arc-shaped rod concealed groove 11. Through the combined design of the straight rod concealed groove 10 and the arc-shaped rod concealed groove 11, the telescopic lifting ring 3 can be completely concealed.

[0024] Please see Figures 2-3 The straight cylindrical part of the hook rod cylinder 4 is provided with several anti-pull-out heads 8, and the arc-shaped cylindrical part of the hook rod cylinder 4 is provided with several anti-pull-out rods 9. The anti-pull-out heads 8 gradually decrease in size from top to bottom. This design makes it easier for the anti-pull-out heads 8 to be inserted into the cast-in-place concrete, and after the concrete has solidified, the anti-pull-out heads 8 are more difficult to pull out.

[0025] The working principle of this utility model is as follows:

[0026] During hoisting, personnel first hold the curved rod 6 and pull it upwards, causing the straight rod 5 to extend from the hook tube 4 until it reaches its maximum length. Then, the crane hook is hung on the curved rod 6. In this way, the screw-locked prestressed concrete square pile 1 can be hoisted upwards through the telescopic lifting ring 3. After the hoisting is completed, the hook is removed from the telescopic lifting ring 3, and the straight rod 5 of the telescopic lifting ring 3 will retract into the hook tube 4 under its own weight. The curved rod 6 will then be stored in the curved rod hiding groove 11 for concealment.

[0027] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A screw-locked prestressed concrete square pile concealed lifting ring, comprising a screw-locked prestressed concrete square pile (1), a concealed groove (2), and a telescopic lifting ring (3), characterized in that: The screw-lock prestressed concrete square pile (1) has a hidden groove (2) with a telescopic lifting ring (3) embedded in it. The telescopic lifting ring (3) includes a hook tube (4), a straight rod (5), and an arc-shaped rod (6). Two hook tubes (4) are arranged side by side and back to back. A straight rod (5) is installed inside the hook tube (4). An arc-shaped rod (6) is installed between the two straight rods (5) and the two straight rods (5) are connected by the arc-shaped rod (6). (6) An outer end (7) is provided at the connection between the two straight rods (5). An inner end (14) is installed at the bottom of the straight rod (5). A limit structure (15) is provided at the top of the hook rod cylinder (4). A sliding groove (12) is provided on the straight rod (5). The sliding groove (12) is slidably engaged with a sliding head (13) provided inside the hook rod cylinder (4). A number of anti-pull-out heads (8) are provided on the surface of the straight part of the hook rod cylinder (4). A number of anti-pull-out rods (9) are provided on the surface of the arc-shaped part of the hook rod cylinder (4).

2. The screw-locking type concealed lifting ring for prestressed concrete square piles according to claim 1, characterized in that: The inner end (14) is adapted to the inner diameter and shape of the hook tube (4).

3. The screw-locking type concealed lifting ring for prestressed concrete square piles according to claim 1, characterized in that: The distance between the groove (12) and the inner end (14) is equal to the height of the limiting structure (15).

4. The screw-locking type concealed lifting ring for prestressed concrete square piles according to claim 1, characterized in that: The anti-pull-out head (8) has a gradually decreasing end face size from top to bottom.

5. The screw-locking type concealed lifting ring for prestressed concrete square piles according to claim 1, characterized in that: The hidden groove (2) includes a straight rod hidden groove (10) and an arc-shaped rod hidden groove (11).

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