Precast pile self-injection hole guiding equipment

Abstract

The utility model relates to the technical field of pile foundations, and discloses a precast pile self-spraying hole guiding device which comprises a water pipe, the water pipe penetrates through a precast pile and extends into a pile tip, and a high-pressure spray head is arranged at the bottom of the water pipe and arranged in the pile tip; and the buffering piece is arranged in the precast pile and fixedly connected with the pile tip, the top of the buffering piece is connected with an impact rod, and the impact rod is arranged in the precast pile in a penetrating mode. The water pipe is arranged in the precast pile, the tail end of the water pipe is connected with the high-pressure spray head, the surrounding soil layer can be sufficiently softened conveniently when the precast pile is implanted underground, the buffer piece is arranged in the precast pile, the buffer effect is achieved when the precast pile is hammered into the soil layer, and the precast pile is prevented from cracking.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundations, and more specifically, to a prefabricated pile self-jetting hole-guiding device. Background Art

[0002] Prestressed concrete pipe piles have been widely used in pile foundation engineering of buildings (structures) due to their high pile strength, fast construction speed, good on-site civilized construction conditions, and easy detection. With the popularization of prestressed pipe piles, complex strata that are difficult to cross are often encountered in the construction of prestressed pipe piles, such as dense sand layers, gravel layers, pebble layers, and massive strongly weathered layers, medium-weathered hard interlayers, etc. It is very difficult to implant prefabricated piles in such terrain.

[0003] The patent with publication number CN209620001U discloses a prefabricated pile self-jetting hole-guiding device, which includes a prefabricated pile tip and an annular tube. The annular tube is fixedly sleeved in the prefabricated pile tip, and a nozzle is provided on the annular tube. The jetting direction of the nozzle is the same as the center line direction of the prefabricated pile tip, and the fluid in the annular tube can be ejected from the nozzle. The prefabricated pile self-jetting hole-guiding injection device can inject high-pressure water or high-pressure slurry into the stratum to soften the soil at the end of the prefabricated pile, and then sink the prefabricated pile by hammering.

[0004] Although the device has a certain softening effect, it is still ineffective for complex strata deep underground. Moreover, the use of hammering to implant precast piles into hard strata will damage the precast piles, causing cracks in the precast piles due to the hammering force. Utility Model Content

[0005] The purpose of the utility model is to provide a prefabricated pile self-jetting hole-guiding device to solve the problems existing in the prior art. A water pipe is arranged in the prefabricated pile, and a high-pressure nozzle is connected to the end of the water pipe, so as to fully soften the surrounding soil layer when the prefabricated pile is implanted underground. A buffer is arranged in the prefabricated pile, which plays a buffering role when the hammer enters the soil layer to avoid cracking of the prefabricated pile.

[0006] To achieve the above-mentioned purpose, the utility model provides the following solution: The utility model provides a prefabricated pile self-jetting hole-guiding device, comprising: a water pipe, which passes through the prefabricated pile and extends into the pile tip, a high-pressure nozzle is arranged at the bottom of the water pipe, and the high-pressure nozzle is arranged in the pile tip; a buffer component, which is arranged in the prefabricated pile and fixedly connected to the pile tip, and an impact rod is connected to the top of the buffer component, and the impact rod is arranged through the prefabricated pile.

[0007] Furthermore, a through groove is arranged in the pile tip, and the high-pressure nozzle is arranged in the through groove.

[0008] Furthermore, an impact plate is fixedly connected to the bottom of the impact rod, and the impact plate is movably arranged in the prefabricated pile.

[0009] Furthermore, the buffer member includes: a plurality of connecting columns, one end of each of the connecting columns is respectively fixed to the pile tip, and the other end passes through the impact plate and is fixed to the prefabricated pile; a plurality of springs, a plurality of the springs are sleeved on the outside of the connecting columns, one end of each of the springs is connected to the pile tip, and the other end is fixed to the impact plate.

[0010] Furthermore, the impact plate is provided with a plurality of first through holes, and the connecting column passes through the impact plate through the first through holes.

[0011] Furthermore, a second through hole is provided in the prefabricated pile, and the water pipe is provided in the second through hole.

[0012] Furthermore, a drill bit is provided at the bottom of the prefabricated pile.

[0013] The utility model discloses the following technical effects:

[0014] A water pipe is provided in the precast pile, and a high-pressure nozzle is provided at the end of the water pipe. The high-pressure nozzle is located in the pile tip and can spray high-pressure water when the pile tip enters the ground, so as to soften the soil layer around the pile tip and reduce the hardness of the surrounding soil layer, which is convenient for the implantation of the precast pile. A buffer is provided in the precast pile. During the process of hammering the impact rod, the buffer plays a buffering role to prevent the precast pile from being directly subjected to the hammering force of the impact rod and prevent the precast pile from cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a cross-sectional view of the entirety of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the buffer member in the utility model;

[0019] Figure 4 It is a structural schematic diagram of another state of the buffer member in the utility model;

[0020] Among them, 1. prefabricated pile; 2. pile tip; 3. water pipe; 4. through groove; 5. high-pressure nozzle; 6. drill bit; 7. impact rod; 8. connecting column; 9. spring; 10. impact plate; 11. first through hole; 12. second through hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] like Figure 1-Figure 4 As shown, the utility model provides a prefabricated pile self-jetting hole-guiding device, comprising: a prefabricated pile 1, a water pipe 3 and a buffer, a pile tip 2 at the bottom of the prefabricated pile 1, the prefabricated pile 1 and the pile tip 2 are connected by the buffer, wherein the water pipe 3 passes through the prefabricated pile 1 and extends into the pile tip 2, a high-pressure nozzle 5 is arranged at the bottom of the water pipe 3, the high-pressure nozzle 5 is arranged in the pile tip 2, the buffer, the buffer is arranged in the prefabricated pile 1 and is fixedly connected to the pile tip 2, and an impact rod 7 is connected to the top of the buffer, and the impact rod 7 is arranged in the prefabricated pile 1.

[0024] An impact rod 7 is provided in the precast pile 1. The impact rod 7 is hammered or rotated to make the precast pile 1 extend into the soil layer under force, thereby completing the pre-embedding of the precast pile 1. A drill 6 is provided at the bottom of the precast pile 1 to facilitate the precast pile 1 to extend into the soil layer.

[0025] A through groove 4 is provided in the pile tip 2, and at least two through grooves 4 are provided. The high-pressure nozzle 5 is located in the through groove 4, and the high-pressure nozzle 5 is in an outwardly inclined state. The through groove 4 is communicated with the outer side of the pile tip 2, so that the high-pressure nozzle 5 can spray liquid into the surrounding soil layer; in the process of different depths of the pile tip 2, the high-pressure nozzle 5 is extended or rotated with the pile tip 2, and high-pressure water is sprayed into the soil layer through the high-pressure nozzle 5, so as to erode and soften the surrounding soil layer, and reduce the hardness of the soil layer with complex terrain in the implantation area of ​​the prefabricated pile 1. The high-pressure nozzle 5 of the device is arranged in the pile tip 2. Different from the prior art that uses a high-pressure nozzle to erode and soften the surface, the high-pressure nozzle 5 in the device goes deep into the soil layer with the pile tip 2, and can erode and soften the deep soil layer, effectively reducing the hardness of the complex terrain.

[0026] At least two water pipes 3 are provided, the top end of the water pipes 3 is connected to a water pump, and the bottom end is connected to a high-pressure nozzle 5. When the precast pile 1 is implanted into the soil layer, the high-pressure nozzle 5 sprays high-pressure water or liquid as the pile tip 2 is extended or rotated, so as to soften or corrode the soil layer around the pile tip 2, thereby facilitating the smooth extension of the precast pile 1.

[0027] The bottom of the impact rod 7 is connected to an impact plate 10, which is located in the precast pile 1. A buffer is provided at the bottom of the impact plate 10, which includes a plurality of connecting columns 8 and a spring 9. The spring 9 is sleeved on the connecting column 8. One end of the connecting column 8 is fixed on the pile tip 2, and the other end passes through the impact plate 10 and is fixed to the precast pile 1. One end of the spring 9 is fixed on the pile tip 2, and the other end is fixed on the impact plate 10. The impact plate 10 is provided with a plurality of first through holes 11, and the connecting column 8 passes through the impact plate 10 through the first through holes 11. When the impact rod 7 is hammered, as shown in FIG. Figure 4 As shown, the impact plate 10 is forced to move downward along the connecting column 8, pressing the spring 9, so that the spring 9 is compressed. When the spring 9 is compressed, a part of the impact force is buffered and converted into elastic potential energy, thereby reducing the impact force on the precast pile 1, reducing damage to the precast pile 1, and avoiding the precast pile 1 from being subjected to high-intensity impact force and cracking.

[0028] In addition, the connection column 8, spring 9 and impact plate 10 are provided to reduce the impact force on the precast pile 1 and the impact force on the water pipe 3, thereby preventing the water pipe 3 from being broken due to high-intensity impact force when the precast pile 1 is implanted into the soil layer.

[0029] A second through hole 12 is provided in the prefabricated pile 1, and the water pipe 3 is located in the second through hole 12. The bottom of the second through hole 12 is connected to the through groove 4, so that the bottom of the water pipe 3 can extend into the through groove 4, and the top of the water pipe 3 is connected to high-pressure water.

[0030] During the pre-embedding process, high-pressure water is taken in through the water supply pipe 3, so that the high-pressure water erodes the external soil layer through the high-pressure nozzle 5, so that the soil layer around the lead hole is softened, which is convenient for the insertion of the prefabricated pile 1, increases the speed and depth of the overall pre-embedding, and enhances the overall practicality; a connecting column 8 is arranged at the bottom of the prefabricated pile 1, and a spring 9 is sleeved on the connecting column 8, and the connecting column 8 and the spring 9 are arranged between the impact plate 10 and the pile tip 2, and an impact rod 7 is arranged on the top of the impact plate 10. When a hammer force is applied to the impact rod 7, the impact plate 10 slides downward along the connecting column 8 to squeeze the spring 9, thereby offsetting part of the impact force in the process, thereby increasing the overall buffering effect, preventing the overall from being broken during the pre-embedding process, increasing the overall strength, and reducing the difficulty of the overall pre-embedding; while reducing the impact force of the prefabricated pile 1, it can also reduce the impact force on the water pipe 3 to avoid the water pipe 3 from being broken.

[0031] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A prefabricated pile (1) self-injection hole-guiding device, characterized in that: include: A water pipe (3), the water pipe (3) passes through the prefabricated pile (1) and extends into the pile tip (2), a high-pressure nozzle (5) is arranged at the bottom of the water pipe (3), and the high-pressure nozzle (5) is arranged in the pile tip (2); A buffer component is arranged in the prefabricated pile (1) and fixedly connected to the pile tip (2); an impact rod (7) is connected to the top of the buffer component, and the impact rod (7) is arranged to penetrate the prefabricated pile (1).

2. The self-injection hole-guiding device for prefabricated piles (1) according to claim 1 is characterized in that: A through groove (4) is arranged in the pile tip (2), and the high-pressure nozzle (5) is arranged in the through groove (4).

3. The self-injection hole-guiding device for prefabricated piles (1) according to claim 1 is characterized in that: An impact plate (10) is fixedly connected to the bottom of the impact rod (7), and the impact plate (10) is movably arranged in the prefabricated pile (1).

4. The self-injection hole-guiding device for prefabricated piles (1) according to claim 3 is characterized in that: The buffer member comprises: A plurality of connecting columns (8), wherein one end of each of the connecting columns (8) is fixedly connected to the pile tip (2) and the other end passes through the impact plate (10) and is fixedly connected to the prefabricated pile (1); A plurality of springs (9) are sleeved on the outside of the connecting column (8), one end of the spring (9) is connected to the pile tip (2), and the other end is fixed to the impact plate (10).

5. The self-injection hole-guiding device for prefabricated piles (1) according to claim 4 is characterized in that: The impact plate (10) is provided with a plurality of first through holes (11), and the connecting column (8) passes through the impact plate (10) through the first through holes (11).

6. The self-injection hole-guiding device for prefabricated piles (1) according to claim 1 is characterized in that: The prefabricated pile (1) is provided with a second through hole (12), and the water pipe (3) is arranged in the second through hole (12).

7. The self-injection hole-guiding device for prefabricated piles (1) according to claim 1 is characterized in that: A drill bit (6) is provided at the bottom of the prefabricated pile (1).

Images