A building foundation cast-in-place pile limiting and fixing device

Abstract

The utility model provides a kind of building foundation bored pile limiting fixing device, including support ring, support column, extension rod, drive ring, drive column and ground nail.Support ring lower surface around is fixedly connected with support column;Support column outer surface movably connects with extension rod;Extension rod upper surface is equipped with stress slot;Support ring upper surface movably connects with drive ring, and drive ring around is fixedly connected with drive column;Drive column and stress slot inner wall slidingly connect;Extension rod outside is equipped with fixed hole for slidingly connecting ground nail.By setting support column, extension rod and stress slot, and by drive column clockwise rotation and extrude stress slot, let extension rod rotate clockwise around support column, make fixed hole away from support ring center, and increase the ground support area of device, or by drive column counterclockwise rotation and extrude stress slot, let extension rod rotate counterclockwise around support column, make fixed hole close to support ring center, and reduce the ground support area of device.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment for the installation of cast-in-place piles, specifically a limiting and fixing device for cast-in-place piles in building foundations. Background Technology

[0002] With the booming development of the construction industry, cast-in-place pile foundations, due to their strong applicability, high bearing capacity, and flexible construction, are widely used in building engineering, bridge engineering, subway and tunnel engineering, water conservancy engineering, and dock and port engineering, becoming one of the most important forms of foundation engineering in construction. In the foundation construction of building projects, cast-in-place piles need to be driven several meters to tens of meters below the ground level. Existing cast-in-place piles for building foundations generally use a structure where ground nails are driven into a single, integrally formed pile body for fixation. However, because this structure uses ground nails driven into a single, integrally formed pile body for fixation, the position of the ground nails is difficult to adjust, making the pile body not very stable when fixed to the ground. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a limiting and fixing device for foundation cast-in-place piles, which solves the problem that the position of the ground nails driven into the ground is difficult to adjust in existing foundation cast-in-place piles, thus making the cast-in-place piles not very stable when fixed to the ground.

[0004] To achieve the above-mentioned technical features, the purpose of this utility model is as follows: A limiting and fixing device for foundation grouting piles includes a support ring, with support columns fixedly connected to all four sides of the lower surface of the support ring. An extension rod is movably connected to the outer surface of the support column. A fixing hole is opened on the outer side of the upper surface of the extension rod, and a ground nail is slidably connected to the inner wall of the fixing hole. A force-bearing groove is opened on the upper surface of the extension rod. A driving ring is movably connected to the upper surface of the support ring, with drive columns fixedly connected to all four sides of the lower surface of the driving ring. The outer surface of the drive column is slidably connected to the inner wall of the force-bearing groove. Anti-detachment plates are fixedly connected to all four sides of the upper surface of the support ring. A snap-fit ​​groove is opened on the front side of the upper surface of the driving ring. A limiting plate is fixedly connected to the front side of the upper surface of the support ring. A limiting screw is threadedly connected inside the limiting plate. A limiting turntable is fixedly connected to the front of the limiting screw. Insertion holes are opened on all four sides of the upper surface of the support ring, and insertion screws are slidably connected to the inner walls of the insertion holes. A grouting pile body is fixedly connected to the lower surface of the insertion screw, and a fastening nut is threadedly connected to the outer surface of the insertion screw.

[0005] Preferably, the support ring and the support column are connected by welding, and both the support ring and the support column are made of stainless steel.

[0006] Preferably, the outer surface of the limiting turntable is covered with a layer of rubber.

[0007] Preferably, the cross-sectional shape of the drive column is circular, and the drive column is inserted into the force-bearing groove.

[0008] Preferably, the number of support columns, extension rods and fixing holes are all four sets, and the included angle between each set of support columns, extension rods and fixing holes is 90 degrees.

[0009] Preferably, the limiting plate and the limiting screw are both made of stainless steel, and the cross-sectional shape of the limiting screw is circular.

[0010] The present invention has the following beneficial effects:

[0011] 1. By rotating the drive column clockwise and pressing the force-bearing groove, the extension rod rotates clockwise around the support column, moving the fixing hole away from the center of the support ring. Alternatively, by rotating the drive column counterclockwise and pressing the force-bearing groove, the extension rod rotates counterclockwise around the support column, bringing the fixing hole closer to the center of the support ring, thus flexibly adjusting the support area of ​​the device on the ground. Limiting and fixing are achieved through snap-fit ​​grooves, limiting plates, limiting screws, and limiting turntables, solving the problem of difficulty in adjusting the position of the ground nails when driven into the ground in existing building foundation cast-in-place piles, and enhancing the stability of the pile body fixed on the ground.

[0012] 2. The outer surface of the limit turntable is covered with a layer of rubber, which has an anti-slip function.

[0013] 3. The drive column rotates counterclockwise to compress the force groove, causing the extension rod to rotate around the support column and be folded, making it easier for personnel to move the device.

[0014] 4. The drive column has a circular cross-section to reduce sliding friction. It is inserted into the force groove, and anti-detachment plates are fixedly connected to all four sides of the upper surface of the support ring, so that the drive column can be stably connected to the extension rod during rotation.

[0015] 5. By setting up insertion holes, insertion screws, and fastening nuts to connect with the pile body, it is convenient for personnel to install and disassemble the support ring, saving usage costs. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of the device of this utility model being fixedly installed on the pile body of the cast-in-place pile.

[0018] Figure 2 This is an exploded view of the device of this utility model being fixedly installed on the pile body of the cast-in-place pile.

[0019] Figure 3 This utility model Figure 2 Enlarged view of part A in the middle.

[0020] In the diagram: 1. Support ring; 2. Support column; 3. Extension rod; 4. Fixing hole; 5. Ground nail; 6. Force groove; 7. Drive ring; 8. Drive column; 9. Anti-detachment plate; 10. Snap-fit ​​groove; 11. Limiting plate; 12. Limiting screw; 13. Limiting turntable; 14. Insertion hole; 15. Insertion screw; 16. Cast-in-place pile body; 17. Fastening nut. Detailed Implementation

[0021] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0022] See Figure 1-3 A limiting and fixing device for foundation piles includes a support ring 1. Support columns 2 are fixedly connected to all four sides of the lower surface of the support ring 1. An extension rod 3 is movably connected to the outer surface of each support column 2. A fixing hole 4 is formed on the outer side of the upper surface of the extension rod 3. A ground nail 5 is slidably connected to the inner wall of the fixing hole 4. A force-bearing groove 6 is formed on the upper surface of the extension rod 3. A driving ring 7 is movably connected to the upper surface of the support ring 1. Drive columns 8 are fixedly connected to all four sides of the lower surface of the driving ring 7. The outer surface of the driving column 8 is slidably connected to the inner wall of the force-bearing groove 6. Anti-detachment plates 9 are fixedly connected to all four sides of the surface. A snap-fit ​​groove 10 is opened on the front side of the upper surface of the drive ring 7. A limit plate 11 is fixedly connected to the front side of the upper surface of the support ring 1. A limit screw 12 is threadedly connected inside the limit plate 11. A limit turntable 13 is fixedly connected to the front of the limit screw 12. Insertion holes 14 are opened on all four sides of the upper surface of the support ring 1. An insertion screw 15 is slidably connected to the inner wall of the insertion hole 14. A grouting pile body 16 is fixedly connected to the lower surface of the insertion screw 15. A fastening nut 17 is threadedly connected to the outer surface of the insertion screw 15. By employing the aforementioned limiting and fixing device, during operation, the drive column rotates clockwise and presses against the force-bearing groove, causing the extension rod to rotate clockwise around the support column, thus moving the fixing hole away from the center of the support ring. Alternatively, the drive column rotates counterclockwise and presses against the force-bearing groove, causing the extension rod to rotate counterclockwise around the support column, thus bringing the fixing hole closer to the center of the support ring. This allows for flexible adjustment of the device's support area on the ground. The limiting and fixing are achieved through the snap-fit ​​groove, limiting plate, limiting screw, and limiting turntable, solving the problem of difficulty in adjusting the position of the ground nails in existing building foundation cast-in-place piles, and enhancing the stability of the pile body fixed on the ground.

[0023] Furthermore, the support ring 1 and the support column 2 are connected by welding, and both the support ring 1 and the support column 2 are made of stainless steel. This welding method enhances the reliability of the fixed installation between the support ring 1 and the support column 2. Using stainless steel ensures structural strength while extending its service life.

[0024] Furthermore, the outer surface of the limiting turntable 13 is covered with a rubber layer. This rubber layer enhances the friction during the rotation of the limiting turntable 13, thereby ensuring its smooth rotation.

[0025] Furthermore, the drive column 8 has a circular cross-section and is inserted into the force-receiving groove 6. Through the sliding fit between the drive column 8 and the force-receiving groove 6, it is ensured that the drive column 8 can drive the extension rod 3 to rotate under the action of the force-receiving groove 6.

[0026] Furthermore, the number of support columns 2, extension rods 3, and fixing holes 4 are all four sets, and the included angle between each set of support columns 2, extension rods 3, and fixing holes 4 is 90 degrees. By adopting a four-set evenly arranged structure, stability is ensured.

[0027] Furthermore, both the limiting plate 11 and the limiting screw 12 are made of stainless steel, and the limiting screw 12 has a circular cross-sectional shape. The use of stainless steel extends their service life, and the limiting screw 12 facilitates a limiting engagement with the locking groove 10, thereby achieving the purpose of limiting the position.

[0028] The working process and principle of this utility model:

[0029] By setting up a support column 2, an extension rod 3, and a force-bearing groove 6, and by driving the column 8 to rotate clockwise and press the force-bearing groove 6, the extension rod 3 rotates clockwise around the support column 2, making the fixing hole 4 away from the center of the support ring 1 and increasing the ground support area of ​​the device. Alternatively, by driving the column 8 to rotate counterclockwise and press the force-bearing groove 6, the extension rod 3 rotates counterclockwise around the support column 2, making the fixing hole closer to the center of the support ring 1 and reducing the ground support area of ​​the device, the problem of the existing foundation grouting piles being difficult to adjust in terms of the position of the ground nail 5, thus making the grouting pile body not very stable when fixed on the ground, is solved.

[0030] By rotating the drive column 8 counterclockwise and pressing the force groove 6, the extension rod 3 rotates counterclockwise around the support column 2 and is folded, making it more convenient for personnel to handle the device; the drive column 8 is inserted into the force groove 6, and the outer surface of the drive column 8 is slidably connected to the inner wall of the force groove 6. Anti-detachment plates 9 are fixedly connected around the upper surface of the support ring 1, so that the drive column and the extension rod 3 can be stably connected during rotation.

[0031] A snap-fit ​​groove 10 is provided on the front side of the upper surface of the drive ring 7. A limit plate 11 is fixedly connected to the front side of the upper surface of the support ring 1. A limit screw 12 is threadedly connected inside the limit plate 11. A limit turntable 13 is fixedly connected to the front of the limit screw 12. Limiting and fixing are achieved through the snap-fit ​​groove 10, the limit plate 11, the limit screw 12, and the limit turntable 13. Insertion holes 14 are provided around the upper surface of the support ring 1. Insertion screws 15 are slidably connected to the inner wall of the insertion holes 14. A grouting pile body 16 is fixedly connected to the lower surface of the insertion screw 15. A tight-fitting screw is threadedly connected to the outer surface of the insertion screw 15. The fastening nut 17, by setting the insertion hole 14, the insertion screw 15 and the fastening nut 17, and by the fastening nut 17 being released from the insertion screw 15, the support ring 1 moves upward and allows the insertion screw 15 to be released from the insertion hole 14, so that the grouting pile body 16 can be removed from the support ring 1. Alternatively, by inserting the insertion screw 15 into the insertion hole 14, the fastening nut 17 moves downward along the insertion screw 15 and clamps the support ring 1, so that the grouting pile body 16 is installed on the support ring 1. This makes it more convenient for personnel to install and remove the support ring 1 and saves on usage costs.

Claims

1. A limiting and fixing device for cast-in-place piles in building foundations, comprising a support ring (1), characterized in that: Support columns (2) are fixedly connected to the lower surface of the support ring (1) around all four sides. An extension rod (3) is movably connected to the outer surface of the support column (2). A fixing hole (4) is opened on the outer side of the upper surface of the extension rod (3). A ground nail (5) is slidably connected to the inner wall of the fixing hole (4). A force groove (6) is opened on the upper surface of the extension rod (3). A drive ring (7) is movably connected to the upper surface of the support ring (1). A drive column (8) is fixedly connected to the lower surface of the drive ring (7) around all four sides. The outer surface of the drive column (8) is slidably connected to the inner wall of the force groove (6). Anti-detachment devices are fixedly connected to the upper surface of the support ring (1) around all four sides. The drive ring (7) has a snap-fit ​​groove (10) on the front side of its upper surface. The support ring (1) has a limiting plate (11) fixedly connected to the front side of its upper surface. The limiting plate (11) has a limiting screw (12) threaded inside. The limiting screw (12) has a limiting turntable (13) fixedly connected to its front side. The support ring (1) has insertion holes (14) on all four sides of its upper surface. The insertion hole (14) has a sliding connection to an insertion screw (15) on its inner wall. The insertion screw (15) has a grouting pile body (16) fixedly connected to its lower surface. The insertion screw (15) has a fastening nut (17) threadedly connected to its outer surface.

2. The limiting and fixing device for cast-in-place piles in building foundations according to claim 1, characterized in that: The support ring (1) and the support column (2) are connected by welding, and both the support ring (1) and the support column (2) are made of stainless steel.

3. The foundation pile limiting and fixing device according to claim 1, characterized in that: The outer surface of the limiting turntable (13) is covered with a layer of rubber.

4. The limiting and fixing device for cast-in-place piles in building foundations according to claim 1, characterized in that: The cross-section of the drive column (8) is circular, and the drive column (8) is inserted into the force groove (6).

5. The limiting and fixing device for cast-in-place piles in building foundations according to claim 1, characterized in that: The number of the support column (2), extension rod (3) and fixing hole (4) are all four sets, and the included angle between each set of support column (2), extension rod (3) and fixing hole (4) is 90 degrees.

6. The limiting and fixing device for cast-in-place piles in building foundations according to claim 1, characterized in that: The limiting plate (11) and the limiting screw (12) are both made of stainless steel, and the cross-sectional shape of the limiting screw (12) is circular.

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