Concrete column puller fixture

Abstract

The application provides a concrete column pipe pulling clamp, and has the technical scheme as follows: a steel pipe clamp is arranged on the upper port of a steel pipe column and is convenient to disassemble and assemble; the steel pipe clamp is fixedly connected with the steel pipe column through internal solid cone pulling split hollow cone; the upper part of the hollow cone is connected with the upper end clamp of the concrete foundation for fixing the steel pipe column through fastening ropes; the utility model can quickly complete the disassembly of the steel pipe column and the foundation through the expansion connection of the steel pipe clamp and the steel pipe column and the fixed setting of the clamp, does not need manual deep excavation of the concrete foundation, significantly improves the replacement efficiency of the steel pipe column, reduces the labor intensity, saves the construction time, and avoids damage to the surrounding infrastructure.

Description

Technical Field

[0001] This utility model relates to the field of road post pipe pulling, specifically to a concrete post pipe pulling clamp. Background Technology

[0002] The steel pipe posts of the anti-glare netting and guardrails along the roadside require frequent replacement due to years of wind and rain erosion and accidents. Because some of the steel pipe posts have concrete foundations, the replacement process presents numerous difficulties. Traditional replacement methods require 4-5 workers simultaneously, first manually excavating the concrete foundation surrounding the post, and then moving and removing the entire concrete base.

[0003] This method of operation is not only labor-intensive, but the entire replacement process also takes up to 40 minutes, severely impacting the efficiency of road maintenance. Especially in busy traffic areas, prolonged construction can cause traffic congestion and increase safety hazards. Furthermore, manual excavation can easily damage surrounding infrastructure, increasing additional repair costs. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a concrete column pipe pulling clamp.

[0005] This utility model is achieved through the following technical solution:

[0006] This application provides a concrete column pipe pulling clamp, the technical solution of which is as follows: it includes a steel pipe clamp that is set on the upper end of the steel pipe column and is easy to assemble and disassemble. The steel pipe clamp is fixedly connected to the steel pipe column by pulling the split hollow cone with the solid cone inside. The upper two sides of the hollow cone are connected to the upper end of the concrete foundation of the fixed steel pipe column by fastening ropes.

[0007] Furthermore, this application also proposes that the steel pipe clamp includes a hollow cone, which is provided by two semi-circular sleeves, the two semi-circular sleeves having conical holes that match the hollow cone, and the top of the solid cone is connected to a hanging rod.

[0008] Furthermore, this application also proposes that the tops of the two semi-circular sleeves of the hollow cone are respectively fixed with outwardly extending L-shaped handles, and the lower inner side of the L-shaped handles is provided with positioning grooves that are locked onto the top of the steel pipe column.

[0009] Furthermore, this application also proposes that the fastening rope includes interconnected tightening bolts and connecting pull ropes, the upper end of the connecting pull rope is clamped to a clamping post provided on the upper part of the corresponding L-shaped handle, and the lower end of the tightening bolt is connected to the side of the clamp via a fixing bolt.

[0010] Furthermore, this application also proposes that the clamp is fixed by two frames through connecting bolts on both sides, and the inner side of the frame is provided with a rubber layer that contacts the concrete foundation.

[0011] Compared with existing technologies, the advantages of this utility model are: by using the expansion connection between the steel pipe clamp and the steel pipe column and the fixing setting of the clamp, the disassembly of the steel pipe column and the foundation can be completed quickly without the need for manual deep excavation of the concrete foundation. This significantly improves the efficiency of steel pipe column replacement, reduces labor intensity, reduces construction time, and avoids damage to the surrounding infrastructure. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 yes Figure 1 Enlarged schematic diagram of a local structure;

[0014] Figure 3 This is a schematic diagram of the structure of the practical steel pipe column clamp;

[0015] In the diagram: 1. Hollow cone; 2. L-shaped handle; 3. Positioning groove; 4. Clamping column; 5. Solid cone; 6. Hanging rod; 7. Clamping clamp; 8. Tightening bolt; 9. Connecting rope; 10. Steel pipe column; 11. Concrete foundation. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0017] like Figure 1 , 2 As shown, this application proposes a concrete column pipe pulling clamp, including a steel pipe clamp installed at the upper end of the steel pipe column and easy to assemble and disassemble. The steel pipe clamp is fixedly connected to the steel pipe column by pulling the split hollow cone with the solid cone inside. The upper two sides of the hollow cone are connected to the upper end of the concrete foundation of the fixed steel pipe column by fastening ropes.

[0018] The steel pipe clamp adopts a split hollow cone structure, which can be composed of two symmetrical semi-circular sleeves. The inner side of the semi-circular sleeves is machined with a tapered hole that matches the solid cone. The top of the solid cone can be equipped with a lifting ring or threaded hole for easy connection with a lifting device. The contact surface between the hollow cone and the steel pipe column can be machined with anti-slip texture or inlaid with rubber pads to enhance friction. The fastening rope can be made of steel wire rope or chain, with one end connected to the hollow cone and the clamp respectively, and a tension adjustment device can be installed in the middle.

[0019] This technical solution achieves rapid fixing of steel pipe columns through the principle of conical expansion. The hollow cone generates radial expansion force under the action of the solid cone, forming a reliable connection with the inner wall of the steel pipe. The fastening rope transfers the pull-out force to the clamps of the concrete foundation, avoiding direct force on the steel pipe column and preventing deformation. Compared with traditional manual excavation methods, this clamp can be operated by a single person, significantly improving the efficiency of column replacement while reducing damage to the concrete foundation. In practice, cone components of appropriate size can be selected according to different pipe diameters, and the length of the fastening rope can be adjusted to adapt to different foundation heights.

[0020] like Figure 2 As shown, this application further proposes that the steel pipe clamp includes a hollow cone, which is provided by two semi-circular sleeves, the two semi-circular sleeves having conical holes that match the hollow cone, and the top of the solid cone is connected to a hanger rod.

[0021] The hollow cone features a split design, consisting of two semi-circular sleeves for easy installation and disassembly. Each semi-circular sleeve has a machined conical hole that mates with the outer conical surface of the hollow cone, achieving self-locking fixation through conical surface contact. The lifting rod connected to the top of the solid cone can be fixed by threaded connection or welding; the lifting rod applies tension to move the solid cone upwards. As a preferred embodiment, the semi-circular sleeves can be made of cast iron or cast steel, and the surface of the conical hole can be hardened to improve wear resistance. Furthermore, the two semi-circular sleeves can be connected by a hinge for quick opening and closing.

[0022] This technical solution solves the problem of difficult installation with integral clamps by using a split hollow cone design. When it is necessary to fix the steel pipe column, simply close the two semi-circular clamps and place them on the upper end of the steel pipe. Then, pull the solid cone upwards using the lifting rod to tighten and fix the hollow cone to the steel pipe. Disassembly is done by reversing the operation. The entire process requires no special tools and can be completed by a single person. Compared with existing technologies, this solution significantly simplifies the operation process and improves work efficiency, making it particularly suitable for the rapid assembly and disassembly of steel pipe columns in concrete foundations.

[0023] like Figure 3 As shown, this application further proposes that the tops of the two semi-circular sleeves of the hollow cone are respectively fixed with outwardly extending L-shaped handles, and the lower inner side of the L-shaped handles is provided with positioning grooves that are locked onto the top of the steel pipe column.

[0024] Specifically, the L-shaped handle is made of metal and welded to the top of the semi-circular sleeve, with its vertical and horizontal sections forming a 90-degree angle. The positioning groove is a U-shaped groove structure, with the groove width greater than the wall thickness of the steel pipe column by 5-10mm and the groove depth being 5-8mm.

[0025] This technical solution achieves the following improvements through the design of an L-shaped handle and a positioning groove structure: First, the L-shaped handle provides the operator with a fulcrum for applying force, allowing for rapid opening and closing of the hollow cone during installation and disassembly. Second, the positioning groove precisely engages with the top of the steel pipe column, ensuring that the clamp does not shift under stress. Therefore, this structure significantly improves the positioning accuracy and ease of operation of the clamp, solving the technical problems of difficult installation and inaccurate positioning associated with traditional clamps. Compared with existing technologies, this solution reduces single-person operation time to less than one minute while maintaining connection strength.

[0026] like Figure 2 As shown, this application further proposes that the fastening rope includes interconnected tightening bolts and connecting pull ropes, with the upper end of the connecting pull rope being snapped onto a locking post provided on the upper part of the corresponding L-shaped handle, and the lower end of the tightening bolts being connected to the side of the clamp via fixing bolts.

[0027] Specifically, the tightening bolt can be a turnbuckle structure, with length adjustment achieved by rotating the nut; the connecting rope can be a steel wire rope, with a hook or buckle at its end to engage with the locking post; the locking post can be designed as a cylindrical protrusion or an irregularly shaped structure with a limiting groove to ensure that the connecting rope will not come off under stress. As a preferred embodiment, a fixed nut seat can be welded to the side of the clamp, and the tightening bolt can be quickly assembled and disassembled via a threaded connection.

[0028] Therefore, this technical solution uses an adjustable-length fastening rope to connect the clamp to the concrete foundation, forming a two-way force system during pipe extraction: the hollow cone and the steel pipe expand to generate an upward pulling force, while the fastening rope transmits the reaction force to the concrete foundation through the clamp. Compared to relying solely on manual excavation, this structure makes the concrete foundation the fulcrum, significantly reducing the intensity of manual excavation. In practice, the operator only needs to adjust the tension bolts to tighten the connecting rope, establishing a stable force transmission path and enabling a single person to complete the column replacement.

[0029] like Figure 1 As shown, this application further proposes that the clamp is fixed by two frames through connecting bolts on both sides, and the inner side of the frame is provided with a rubber layer that contacts the concrete foundation.

[0030] Specifically, the clamp adopts a split frame structure, with two frames connected by bolts to form a ring-shaped fixing structure. The rubber layer on the inner side of the frame can be made of natural or synthetic rubber, with a thickness ranging from 5-10mm, and is connected to the inner wall of the frame by adhesive or mechanical fixing. As a preferred embodiment, the surface of the rubber layer can be provided with anti-slip texture to enhance friction with the concrete foundation. The connecting bolts can be high-strength bolts of M12-M16 specifications, used in conjunction with anti-loosening washers. The frame can be made of Q235 steel, with a wall thickness of 4-6mm and an overall width of 50-80mm.

[0031] Therefore, this technical solution achieves rapid installation and disassembly through a split-type clamp design, and the rubber layer effectively avoids damage caused by direct contact between the clamp and the concrete foundation. The specific working principle is as follows: when the clamp is tightened, the rubber layer undergoes elastic deformation, ensuring clamping force while avoiding stress concentration; the symmetrical arrangement of the connecting bolts ensures uniform stress distribution on the clamp. Compared with existing technologies, this solution significantly improves the installation efficiency and service life of the clamp, while reducing the risk of damage to the concrete foundation.

[0032] The implementation principle of a concrete column pipe-pulling clamp according to an embodiment of this application is as follows:

[0033] First, fix the clamp 7 to the upper end of the concrete foundation 11. Then, insert the solid cone 5 into the steel pipe column 10 (at this time, the solid cone 5 is connected to the hook of the vibratory pile lifting machine through the top hanging rod 6). Next, hold the L-shaped handle 2 and insert the two semi-circular sleeves of the hollow cone 1 into the top of the steel pipe column 10. Make the positioning groove 3 of the L-shaped handle 2 lock into the edge of the steel pipe column 10 to achieve pre-positioning. Operate the vibratory pile lifting machine to drive the solid cone 5 to move upward. It will lock into the hollow cone 1, causing the two semi-circular sleeves to open and tighten with the steel pipe. Then, connect the connecting rope 9 to the clamp post 4 of the L-shaped handle 2 and the side of the clamp 7. Tighten the loosening bolt 8 to achieve the tension of the connecting rope 9. Start the vibratory pile lifting machine to vibrate and move upward. Pull out the steel pipe column and the concrete foundation below. The whole process can be completed in about 15 minutes, which greatly improves the work efficiency.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A concrete column pipe-pulling clamp, characterized in that: It includes a steel pipe clamp that is installed on the upper end of the steel pipe column (10) and is easy to disassemble and assemble. The steel pipe clamp is fixedly connected to the steel pipe column (10) by pulling the split hollow cone (1) with the solid cone (5) inside. The upper two sides of the hollow cone (1) are connected to the upper end of the concrete foundation (11) of the fixed steel pipe column (10) by fastening ropes.

2. The concrete column pipe-pulling clamp according to claim 1, characterized in that: The steel pipe clamp includes a hollow cone (1), which is provided by two semi-circular sleeves. The two semi-circular sleeves are provided with conical holes that match the hollow cone (1). The top of the solid cone (5) is connected to a hanging rod (6).

3. A concrete column pipe-pulling clamp according to claim 2, characterized in that: The top of the two semi-circular sleeves of the hollow cone (1) are respectively fixed with outwardly extending L-shaped handles (2), and the lower inner side of the L-shaped handles (2) is provided with positioning grooves (3) that are locked on the top of the steel pipe column (10).

4. A concrete column pipe-pulling clamp according to claim 1, characterized in that: The fastening rope includes a tightening bolt (8) and a connecting pull rope (9) connected to each other. The upper end of the connecting pull rope (9) is clamped on the clamp post (4) set on the upper part of the corresponding L-shaped handle (2). The lower end of the tightening bolt (8) is connected to the side of the clamp (7) through a fixing bolt.

5. A concrete column pipe-pulling clamp according to claim 1, characterized in that: The clamp (7) is fixed by two frames through connecting bolts on both sides, and the inner side of the frame is provided with a rubber layer that contacts the concrete foundation (11).

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