Pile head clamping device applied to pile pulling work in water conservancy civil construction

Abstract

The utility model discloses a pile head clamping device applied to water conservancy civil construction pile pulling work, and relates to the technical field of civil construction, the pile head clamping device comprises a pile head, a fixing belt is wound on the pile head close to the top, a buckle belt is arranged at the bottom of the fixing belt, a connecting belt is arranged at the top of the fixing belt, and the buckle belt is connected with the connecting belt. Metal teeth are fixedly connected into the fixing band, a boss is arranged on the surface of the fixing band outwards, a stretching table is arranged on the surface of the buckling band outwards, a locking rod is arranged on the top of the stretching table, and a trapezoidal block is arranged in the stretching table. Through triple fixation of the fixing belt, the connecting belt and the buckling belt, the metal teeth are hit into the pile body, the pile body is lifted up to pull the pile by penetrating through the connecting rope on the locking rod, when the buckling belt is pulled, the convex block is extruded inwards through the trapezoidal block, so that the fixing belt is firmly attached to the surface of the pile body, the whole body is not prone to falling off, and the fixing effect is better.

Description

Technical Field

[0001] This utility model belongs to the field of civil engineering construction technology, specifically, it relates to a pile head clamping device used in pile extraction work in water conservancy civil engineering construction. Background Technology

[0002] In the construction of water conservancy projects, civil engineering projects and other fields, it is often necessary to remove old piles (such as wooden piles and steel pipe piles).

[0003] Chinese patent CN216640580U discloses a pile extraction machine with simple structure, low cost, convenient operation, and stability. It includes a clamping mechanism comprising an adjusting screw, an adjusting handwheel, an intermediate support sleeve, a clamping plate, and a nut. The adjusting screw has two threaded sections with opposite helical directions spaced apart. Two clamping plates and two nuts are respectively located on the two threaded sections. The clamping plate is fitted inside the nut, and a screw compression spring is fitted between the clamping plate and the intermediate support sleeve. The adjusting handwheel is fixed to the end of the adjusting screw. The aforementioned prior art directly clamps the pile through two clamping plates, which often leads to slippage and pile extraction failure for piles made of harder materials.

[0004] In view of this, this utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a pile head clamping device for pile extraction in water conservancy and civil engineering construction, thus solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A pile head clamping device for pile extraction in water conservancy and civil engineering construction includes: a pile head, characterized in that a fixing band is wound around the top of the pile head, metal teeth are fixedly connected inside the fixing band, a boss is provided on the surface of the fixing band facing outward, fixing holes are provided at both ends of the fixing band, and fixing screws are installed through the fixing holes.

[0008] Optionally, the bottom of the fixing strap is provided with a buckle, the buckle surface is provided with a tensioning platform facing outward, and the top of the tensioning platform is provided with a locking rod.

[0009] Optionally, the top of the fixing strap is provided with a connecting strap, the surface of the connecting strap is vertically provided with a first through hole, the surface of the buckle is vertically provided with a second through hole, the positions of the first through hole and the second through hole must correspond one to one, and a connecting screw is vertically installed inside the first through hole and the second through hole.

[0010] Optionally, one end of the buckle has a square hole, a through rod is installed inside the square hole, one end of the through rod rests on the outside of the square hole, and the other end of the buckle has evenly spaced round holes.

[0011] Optionally, the stretching table has a trapezoidal block inside, and the bottom of the boss has a chamfer.

[0012] Optionally, the connecting strap is shorter than the buckle strap, and the two ends of the connecting strap are not connected.

[0013] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art. Of course, any product implementing this utility model does not necessarily need to achieve all of the following advantages at the same time:

[0014] 1. This pile head clamping device, used in pile extraction in water conservancy and civil engineering construction, is triple-fixed by a fixing strap, a connecting strap, and a buckle. Metal teeth are driven into the pile body, and the connecting strap and buckle are locked together by connecting screws. A connecting rope passes through the locking rod to lift the pile body for extraction. When the buckle is pulled, the trapezoidal block squeezes the protrusion inward, making the fixing strap firmly adhere to the surface of the pile body, making the whole device less likely to fall off and providing a better fixing effect.

[0015] 2. The pile head clamping device used in hydraulic and civil engineering construction for pile extraction has a fixed belt that is tightened by screws after being stretched, and the buckle is made to fit the whole to the pile head by passing the rod through the corresponding round hole. The internal diameter of both can be adjusted according to the actual diameter of the pile head to ensure a complete fit for pile extraction, thus improving the applicability of the device.

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0018] In the picture:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is an exploded view of the present invention;

[0021] Figure 3 This is a schematic diagram of the fixing strap of this utility model;

[0022] Figure 4 This is a schematic diagram of the buckle of this utility model;

[0023] Figure 5This is a cross-sectional view of the metal tooth fitting post area of ​​this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Pile head; 2. Fixing strap; 201. Protrusion; 202. Fixing hole; 203. Fixing screw; 204. Metal thread; 3. Connecting strap; 301. Through hole one; 4. Buckle strap; 401. Through hole two; 402. Tensioning table; 403. Locking rod; 404. Square hole; 405. Round hole; 406. Through rod; 5. Connecting screw; 6. Trapezoidal block.

[0026] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings.

[0028] Please see Figure 1-5 As shown in the figure, this embodiment provides a pile head clamping device for pile extraction in water conservancy and civil engineering construction, including: pile head 1.

[0029] like Figure 1-5 As shown, in this embodiment, a fixing strap 2 is wrapped around the top of the pile head 1. Metal teeth 204 are fixedly connected inside the fixing strap 2. A boss 201 is provided on the outward-facing surface of the fixing strap 2. Fixing holes 202 are provided at both ends of the fixing strap 2, and fixing screws 203 are installed through the fixing holes 202. If the surface of the pile head 1 is very smooth, it is difficult to fix the fixing strap 2 to its surface, as it is easy to fall off when pulled upwards. Therefore, a groove needs to be made on the pile head 1, and the fixing strap 2 is first tied to the pile head 1, with the internal metal teeth 204 conforming to the arc-shaped side of the pile head 1. By tapping the fixing band 2, the metal teeth 204 are embedded into the pile head 1 for fixation. At the same time, the two ends of the fixing band 2 are aligned with the fixing holes 202 and pass through the fixing screws 203, which press the two ends of the fixing band 2 to lock it in place. Thus, the fixing band 2 is completely installed on the pile head 1. The fixing holes 202 are elliptical. For pile heads 1 with different circumferences, the fixing band 2 can adjust its length around the pile head 1 by adjusting the position of the fixing screws 203 in the fixing holes 202, so that its length is the same as the circumference of the pile head 1 and fits the pile head 1. This allows it to be installed and fixed for pile heads 1 of different sizes.

[0030] like Figure 4As shown, in this embodiment, the bottom of the fixing strap 2 is provided with a buckle 4, and the surface of the buckle 4 is provided with a tensioning platform 402 facing outward. The top of the tensioning platform 402 is provided with a locking rod 403. The buckle 4 is located below the fixing strap 2, and its top is attached to the bottom of the fixing strap 2, lifting the fixing strap 2 upward. An external pull rope passes through the locking rod 403 on the corresponding tensioning platform 402. When pulling the pile, the buckle 4 is lifted upward by tightening the pull rope. The buckle 4 pushes the fixing strap 2, and the fixing strap 2 is fixed to the pile head 1 by embedding it into the pile head 1 through the metal teeth 204. The pile head 1 is then lifted upward, and the pile pulling work is finally completed.

[0031] like Figure 2 As shown, the top of the fixing strap 2 in this embodiment is provided with a connecting strap 3. The surface of the connecting strap 3 has a through hole 301 perpendicularly opened, and the surface of the buckle 4 has a through hole 401 perpendicularly opened. The positions of the through hole 301 and the through hole 401 must correspond one to one. A connecting screw 5 is vertically installed inside the through hole 301 and the through hole 401. The connecting strap 3 is located at the top of the fixing strap 2, and its bottom is attached to the top of the fixing strap 2. The through hole 301 on the connecting strap 3 and the through hole 401 on the buckle 4 are aligned, and the two are fixed by passing the connecting screw 5 from bottom to top, thereby clamping the fixing strap 2 in the middle position. The protrusion 201 on the fixing strap 2 extends outward, increasing the contact area between the fixing strap 2 and the two, making the position of the three tend to be stable. When passing the connecting screw 5, it is necessary to observe and avoid the protrusion 201. Only a portion of the through hole 301 and the through hole 401 needs to be used.

[0032] like Figure 4 As shown, in this embodiment, one end of the buckle 4 has a square hole 404, and a through rod 406 is installed inside the square hole 404. One end of the through rod 406 rests on the outside of the square hole 404, and the other end of the buckle 4 has evenly spaced round holes 405. Similar to the fixing strap 2, the length of the buckle 4 that fits against the surface of the pile head 1 can be adjusted according to the actual circumference of the pile head 1. The through rod 406 obliquely passes through the square hole 404, and its position is adjusted within one end of the square hole 404 via a shaft. It extends out from the other end of the square hole 404 and rests on the outside, preventing it from flipping over. When the buckle 4 is blocked by the side through the square hole 404, the other end of the buckle 4 is passed through the square buckle 404 and stretched to fit onto the pile head 1. The angle of the through rod 406 is adjusted so that it passes through the round hole 405 on the buckle 4. The buckle 4 is fixed by limiting the round hole 405 through the through rod 406. The closer the position of the round hole 405 through which the through rod 406 passes is to the center of the buckle 4, the smaller the circumference of the circle enclosed by the buckle 4, so that it fits completely on the pile head 1 and is adjusted according to the actual size of the pile head 1, so that the buckle 4 and the fixing strap 2 have the same size adjustment function.

[0033] like Figure 2 , 4As shown, the tensioning table 402 in this embodiment is provided with a trapezoidal block 6 inside, and the bottom of the boss 201 is provided with a chamfer. Before the buckle 4 is attached to the top of the fixing band 2, the position needs to be adjusted to align the boss 201 of the tensioning table 402 and the fixing band 2, and the trapezoidal block 6 is inserted into the tensioning table 402. The trapezoidal block 6 is in the groove in the center of the tensioning table 402, and is attached to the tensioning table 402 on three sides. The side facing the pile head 1 is a slope with a shorter top and a longer bottom. The slope is attached to the slope of the chamfer of the boss 201. When the pull rope pulls the buckle 4 through the locking rod 403, the buckle 4 pushes the trapezoidal block 6 upward. By adjusting the direction of force through the slope, part of the upward force is transferred to the force of pressing the protrusion 201 inward, pressing the metal teeth 204 onto the pile head 1. In this way, the fixing band 2 will be fixed more tightly, the fixing band 2 will be less likely to fall off, and the buckle 4 will be supported, making the whole device less prone to slipping.

[0034] like Figure 2 As shown, in this embodiment, the length of the connecting strap 3 is shorter than that of the buckle 4, and the two ends of the connecting strap 3 are not connected. The connecting strap 3 is connected by five buckles 4 through connecting screws, which together with the buckles 4 clamp and fix the strap 2. In this way, the connecting strap 3 can be fixed without connecting the two ends to wrap around the pile head 1.

[0035] Working principle: First, the fixing strap 2 is tied to the pile head 1. The internal metal teeth 204 fit against the arc side of the pile head 1. The fixing strap 2 is tapped to make the metal teeth 204 embed into the pile head 1 for fixation. The fixing strap 2 is then tightened by the fixing screw 203. Next, the buckle strap 4 is put on the bottom of the fixing strap 2. The tensioning table 402 is aligned with the protrusion 201, and the trapezoidal block 6 is inserted into the tensioning table 402. The inclined surface of the trapezoidal block 6 fits against the inclined surface of the bottom chamfer of the protrusion 201. One end of the buckle strap 4 passes through the square hole 404, and the through rod 406 passes through the round hole 405, so that... The buckle 4 is completely fitted and fixed to the pile head 1. Finally, the connecting strap 3 is put on the top of the fixing strap 2 and the first perforation 301 and the second perforation 401 on the buckle 4 are aligned. The connecting screw 5 is tightened to fix it. The multi-strand pull rope is connected to the locking rod 403 of the tensioning table 402. The entire device is pulled by pulling the pull rope through other hydraulic equipment. The fixing strap 2 bites the pile head 1 through the metal teeth 204 embedded in the pile head 1. The trapezoidal block 6 presses the protrusion 201 upward to press the fixing strap 2 to prevent it from falling off. Finally, the pile head 1 is pulled out.

[0036] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A pile head clamping device used in pile extraction work during hydraulic and civil engineering construction, comprising: The pile head (1) is characterized in that a fixing band (2) is wrapped around the top of the pile head (1), a metal tooth (204) is fixedly connected inside the fixing band (2), a boss (201) is provided on the surface of the fixing band (2) facing outward, and fixing holes (202) are provided at both ends of the fixing band (2), and fixing screws (203) are installed through the fixing holes (202).

2. The pile head clamping device for pile extraction in hydraulic and civil engineering construction according to claim 1, characterized in that, The bottom of the fixing strap (2) is provided with a buckle (4), the surface of the buckle (4) is provided with a tensioning table (402) facing outward, and the top of the tensioning table (402) is provided with a locking rod (403).

3. A pile head clamping device for pile extraction in hydraulic and civil engineering construction according to claim 2, characterized in that, The top of the fixing strap (2) is provided with a connecting strap (3), and the surface of the connecting strap (3) is provided with a through hole (301) perpendicularly, and the surface of the buckle (4) is provided with a through hole (401) perpendicularly. The positions of the through hole (301) and the through hole (401) must correspond one to one. The connecting screw (5) is installed vertically inside the through hole (301) and the through hole (401).

4. A pile head clamping device for pile extraction in hydraulic and civil engineering construction according to claim 2, characterized in that, One end of the buckle (4) has a square hole (404), and a through rod (406) is installed inside the square hole (404). One end of the through rod (406) rests on the outside of the square hole (404), and the other end of the buckle (4) has round holes (405) evenly distributed.

5. A pile head clamping device for pile extraction in hydraulic and civil engineering construction according to claim 2, characterized in that, The stretching table (402) has a trapezoidal block (6) inside, and the bottom of the boss (201) has a chamfer.

6. A pile head clamping device for pile extraction in hydraulic and civil engineering construction according to claim 3, characterized in that, The connecting band (3) is shorter than the buckle (4), and the two ends of the connecting band (3) are not connected.

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