Soft soil stratum large-diameter ultra-deep cast-in-situ bored pile hole forming device

Abstract

The utility model provides a soft soil stratum large-caliber ultra-deep bored pile hole-forming device which comprises a base, two supporting frames are fixedly installed on one side of the top end of the base, a liftable fixing box is arranged on the surfaces of the two supporting frames, the bottom of the fixing box is rotationally connected with a detachable connecting pipe, and the bottom of the fixing box is fixedly connected with the connecting pipe. A drilling assembly is fixedly installed at the bottom end of the connecting pipe located at the bottommost portion, a hose fixedly connected with an external water pump is arranged on one side of the fixing box, and one end of the hose penetrates through the connecting pipes to be connected with a drilling assembly pipeline. In the using process of the pouring hole-forming device, a water spraying structure and the drill bit are integrated to form the hole drilling assembly, high-pressure water flow is synchronously used for flushing the drilled position during hole drilling, soil loosening is increased, on one hand, the hole drilling efficiency is improved, on the other hand, soil generated during hole drilling can be rapidly taken away, and the hole drilling efficiency is improved. And the working efficiency of drilling is improved.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology and relates to a hole-forming device for large-diameter ultra-deep bored piles in soft soil strata. Background Technology

[0002] Currently in the construction industry, in order to ensure the stability of the building foundation during construction in soft soil strata, it is necessary to drill bored piles and then pour concrete into the holes to ensure the stability of the foundation.

[0003] Traditional ultra-deep bored pile drilling equipment mainly uses drilling machines when drilling in soft soil strata. When drilling, the drilling machine only uses the drill bit. When encountering hard layers, the drilling speed of the drill bit will decrease, thus affecting the drilling efficiency. To solve the above technical problems, we designed a large-diameter ultra-deep bored pile drilling device for soft soil strata. Summary of the Invention

[0004] The purpose of this invention is to provide a drilling device for large-diameter ultra-deep bored piles in soft soil strata, so as to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solution: a drilling device for large-diameter ultra-deep bored piles in soft soil strata, comprising a base, two support frames fixedly installed on one side of the top of the base, and a liftable fixed box provided on the surface of the two support frames. A detachable connecting pipe is rotatably connected to the bottom of the fixed box, and a drilling assembly is fixedly installed at the bottom end of the connecting pipe at the bottommost point. A flexible hose fixedly connected to an external water pump is provided on one side of the fixed box, and one end of the flexible hose passes through the connecting pipe and connects to the pipeline of the drilling assembly.

[0006] In the above-mentioned large-diameter ultra-deep bored pile forming device for soft soil strata, a top plate is fixedly installed at the bottom end of the two support frames, and two fixed pulleys are fixedly installed at the bottom end of the top plate. An equipment box is fixedly installed on the other side of the top of the base, and two steel cables are provided at the top of the equipment box. Fixed rings are fixedly installed on both sides of the top of the fixed box, and the two steel cables pass through the corresponding fixed pulleys and are fixedly connected to the fixed rings.

[0007] In the above-mentioned large-diameter ultra-deep bored pile forming device for soft soil strata, the inner walls of the equipment box are rotatably connected to the two sides of the shaft, and the two ends of the shaft are fixedly installed with winding wheels. The steel cable is wound and connected to the winding wheels. A servo motor is fixedly installed on one side of the outer wall of the equipment box, and the output shaft of the servo motor is fixedly connected to one end of the shaft.

[0008] In the above-mentioned large-diameter ultra-deep bored pile forming device for soft soil strata, electric push rods are fixedly installed at the center of both sides of the inner wall of the equipment box, and arc-shaped clamping blocks are fixedly installed at the telescopic ends of the two electric push rods. The arc-shaped clamping blocks are clamped and connected to the rotating shaft.

[0009] In the above-mentioned large-diameter ultra-deep bored pile forming device for soft soil strata, two support rods are provided on the side of the outer wall of the equipment box and fixedly connected to the base. The two support rods are fixedly connected to the top of the corresponding support frame. Guide slides are fixedly installed on the front of the two support frames. Guide slide grooves adapted to the guide slides are opened on both sides of the back of the fixed box.

[0010] In the above-mentioned large-diameter ultra-deep bored pile forming device for soft soil strata, a drive motor is fixedly installed at the center of the back of the fixed box, and a second bevel gear is fixedly installed inside the fixed box through the output shaft of the drive motor. A first bevel gear is fixedly installed on the surface of the connecting pipe at the top, and the first bevel gear meshes with the second bevel gear.

[0011] In the aforementioned drilling device for large-diameter ultra-deep bored piles in soft soil strata, the drilling assembly comprises a fixed plate, steel pipes, a toothed disc, a connecting column, and an assembly ring. The fixed plate has a flow channel inside, and the assembly ring is fixedly mounted on the top of the fixed plate. The outer edge of the assembly ring is fixedly connected to the end of the bottom connecting pipe by bolts. The interior of the assembly ring is rotatably connected to the connecting ring at the end of the hose by bearings. The connecting column is fixedly installed at the bottom of the fixed plate, and the toothed disc is fixedly installed at the bottom end of the connecting column. Multiple steel pipes are fixedly mounted at equal intervals along the circumference on the top of the toothed disc, and the multiple steel pipes communicate with the flow channel inside the fixed plate.

[0012] Compared with the prior art, the advantages of the present invention for a large-diameter ultra-deep bored pile forming device in soft soil strata are as follows: During the use of this bored pile forming device, the water jetting structure is integrated with the drill bit to form a drilling assembly. During drilling, high-pressure water flow is simultaneously used to flush the drilling site, increasing soil loosening. On the one hand, this improves drilling efficiency, and on the other hand, it can quickly remove the soil generated during drilling, thus improving the working efficiency of drilling. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a drilling and grouting device for large-diameter ultra-deep bored piles in soft soil strata according to this utility model.

[0014] Figure 2 This is a schematic diagram of the drilling component structure of a drilling device for large-diameter ultra-deep bored piles in soft soil strata according to this utility model.

[0015] Figure 3This is a schematic diagram of the fixed box structure of a drilling device for large-diameter ultra-deep bored piles in soft soil strata according to this utility model.

[0016] Figure 4 This is a schematic diagram of the cross-sectional structure of the equipment box of a drilling and grouting device for large-diameter ultra-deep bored piles in soft soil strata according to this utility model.

[0017] Figure 5 This is a schematic diagram of a single connecting pipe of a drilling device for large-diameter ultra-deep bored piles in soft soil strata, according to this utility model.

[0018] In the diagram, 1. Base; 2. Support frame; 3. Guide slide; 4. Equipment box; 5. Support rod; 6. Servo motor; 7. Drilling assembly; 701. Fixing plate; 702. Steel pipe; 703. Gear plate; 704. Connecting column; 705. Assembly ring; 8. Connecting pipe; 9. Fixing box; 10. Steel cable; 11. Fixing ring; 12. Flexible hose; 13. Top plate; 14. First bevel gear; 15. Second bevel gear; 16. Drive motor; 17. Rotating shaft; 18. Rewinding wheel; 19. Electric push rod; 20. Arc-shaped clamping block. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] like Figure 1-5 As shown, this utility model discloses a drilling device for large-diameter ultra-deep bored piles in soft soil strata, including a base 1. Two support frames 2 are fixedly installed on one side of the top of the base 1. The surfaces of the two support frames 2 are provided with liftable fixing boxes 9. The bottom of the fixing boxes 9 is rotatably connected to a detachable connecting pipe 8. A drilling assembly 7 is fixedly installed at the bottom end of the bottom connecting pipe 8. A flexible hose 12 is provided on one side of the fixing box 9 and is fixedly connected to an external water pump. One end of the flexible hose 12 passes through the connecting pipe 8 and is connected to the pipeline of the drilling assembly 7.

[0021] Specifically, during use, the grouting hole-forming device integrates the water-spraying structure with the drill bit to form a drilling assembly 7. During drilling, high-pressure water flow simultaneously washes the drilling site, increasing soil loosening. This improves drilling efficiency and quickly removes the soil generated during drilling, thus enhancing drilling work efficiency.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, this utility model discloses a drilling device for large-diameter ultra-deep bored piles in soft soil strata. A top plate 13 is fixedly installed at the bottom end of two support frames 2. Two fixed pulleys are fixedly installed at the bottom end of the top plate 13. An equipment box 4 is fixedly installed on the other side of the top of the base 1. Two steel cables 10 are provided at the top of the equipment box 4. Fixing rings 11 are fixedly installed on both sides of the top of the fixing box 9. The two steel cables 10 pass through the corresponding fixed pulleys and are fixedly connected to the fixing rings 11.

[0023] Rotary shafts 17 are rotatably connected to both sides of the inner wall of the equipment box 4. Both ends of the rotating shafts 17 are fixedly installed with winding wheels 18. The steel cable 10 is wound and connected to the winding wheels 18. A servo motor 6 is fixedly installed on one side of the outer wall of the equipment box 4. The output shaft of the servo motor 6 is fixedly connected to one end of the rotating shaft 17.

[0024] Specifically, the servo motor 6 drives the rotating shaft 17 to rotate, and the rotating shaft 17 drives the winding wheel 18 to wind and unwind the steel cable 10. The winding and unwinding of the steel cable 10 pulls the fixed box 9 to rise and fall.

[0025] Electric push rods 19 are fixedly installed at the center of both sides of the inner wall of the equipment box 4. Arc-shaped clamps 20 are fixedly installed at the telescopic ends of the two electric push rods 19, and the arc-shaped clamps 20 are clamped and connected to the rotating shaft 17.

[0026] Specifically, the arc-shaped clamp 20 is moved by the electric push rod 19, and the arc-shaped clamp 20 can lock the rotating shaft 17, thus fixing the rotating shaft 17 after drilling is completed.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this utility model discloses a drilling device for large-diameter ultra-deep bored piles in soft soil strata. Two support rods 5 are fixedly connected to the base 1 on the side of the outer wall of the equipment box 4. The two support rods 5 are fixedly connected to the top of the corresponding support frame 2. Guide slides 3 are fixedly installed on the front of both support frames 2. Guide slide grooves that are compatible with guide slides 3 are opened on both sides of the back of the fixed box 9.

[0028] Specifically, the guide slide 3 and the guide groove work together to limit the movement direction of the fixed box 9, ensuring that the fixed box 9 moves stably and vertically. The drilling assembly 7 is stably raised and lowered by the vertical lifting of the fixed box 9.

[0029] A drive motor 16 is fixedly installed at the center of the back of the fixed box 9. The output shaft of the drive motor 16 extends into the interior of the fixed box 9 and a second bevel gear 15 is fixedly installed thereon. A first bevel gear 14 is fixedly installed on the surface of the top connecting pipe 8. The first bevel gear 14 and the second bevel gear 15 are meshed and connected.

[0030] Specifically, the second bevel gear 15 is driven to rotate by the drive motor 16. The second bevel gear 15 meshes with the first bevel gear 14, thereby driving the connecting pipe 8 to rotate. The rotation of the connecting pipe 8 drives the drilling assembly 7 to rotate and drill.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this utility model discloses a drilling device for large-diameter ultra-deep bored piles in soft soil strata. The drilling assembly 7 comprises a fixed plate 701, steel pipes 702, a toothed disc 703, a connecting column 704, and a mounting ring 705. The fixed plate 701 has a flow channel inside. The mounting ring 705 is fixedly installed on the top of the fixed plate 701. The outer edge of the mounting ring 705 is fixedly connected to the end of the bottom connecting pipe 8 by bolts. The inside of the mounting ring 705 is rotatably connected to the connecting ring at the end of the hose 12 by bearings. The connecting column 704 is fixedly installed on the bottom of the fixed plate 701. The toothed disc 703 is fixedly installed on the bottom end of the connecting column 704. Multiple steel pipes 702 are fixedly fixed at equal intervals along the circumference on the top of the toothed disc 703. The multiple steel pipes 702 are connected to the flow channel inside the fixed plate 701.

[0032] Specifically, the bottom toothed disc 703 of the drilling assembly 7 rotates to achieve drilling. During the rotation of the toothed disc 703, multiple circumferentially arranged steel pipes 702 flush the bottom of the borehole, loosening the soil on the borehole surface and improving drilling efficiency.

[0033] In specific implementation, when using the injection drilling device, first connect the power supply and connect the hose 12 to the external high-pressure water pump. Then, turn on the servo motor 6, which drives the rotating shaft 17 to rotate. The rotation of the rotating shaft 17 drives the winding wheel 18 to wind and unwind the steel cable 10. The steel cable 10 pulls the fixing box 9 to slide downward on the surface of the guide slide bar 3. When it touches the ground, turn on the drive motor 16 and the external high-pressure water pump. The drive motor 16 drives the second bevel gear 15 to rotate. The second bevel gear 15 meshes with the first bevel gear 14, thereby driving the connecting pipe 8 to rotate. The rotation of the connecting pipe 8 drives... When the drilling assembly 7 rotates, it should be noted that the bearing between the hose 12 and the drilling assembly 7 does not affect the water injection of the hose 12. The water in the hose 12 is flushed onto the drilling surface through multiple steel pipes 702, which can quickly improve soil loosening and thus improve drilling efficiency. At the same time, it can flush out the soil generated during drilling, improving drilling efficiency. It should also be noted that the connecting pipe 8 of this application is assembled from multiple metal pipes. Adjacent metal pipes are assembled with flanges, bolts and nuts. Therefore, metal pipes can be continuously installed according to the required drilling depth.

[0034] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A drilling device for large-diameter ultra-deep bored piles in soft soil strata, comprising a base (1), wherein two support frames (2) are fixedly installed on one side of the top of the base (1), and the surfaces of the two support frames (2) are provided with liftable fixed boxes (9), characterized in that, The bottom of the fixed box (9) is rotatably connected to a detachable connecting pipe (8). A drilling assembly (7) is fixedly installed at the bottom end of the connecting pipe (8). A flexible hose (12) is provided on one side of the fixed box (9) and is fixedly connected to an external water pump. One end of the flexible hose (12) passes through the connecting pipe (8) and is connected to the pipeline of the drilling assembly (7).

2. The drilling and grouting device for large-diameter ultra-deep bored piles in soft soil strata according to claim 1, characterized in that, A top plate (13) is fixedly installed at the bottom end of the two support frames (2). Two fixed pulleys are fixedly installed at the bottom end of the top plate (13). An equipment box (4) is fixedly installed on the other side of the top of the base (1). Two steel cables (10) are provided at the top of the equipment box (4). Fixed rings (11) are fixedly installed on both sides of the top of the fixed box (9). The two steel cables (10) pass through the corresponding fixed pulleys and are fixedly connected to the fixed rings (11).

3. The drilling device for large-diameter ultra-deep bored piles in soft soil strata according to claim 2, characterized in that, The inner walls of the equipment box (4) are rotatably connected to the two sides of the shaft (17). Both ends of the shaft (17) are fixedly installed with winding wheels (18). The steel cable (10) is wound and connected to the winding wheels (18). A servo motor (6) is fixedly installed on one side of the outer wall of the equipment box (4). The output shaft of the servo motor (6) is fixedly connected to one end of the shaft (17).

4. The drilling device for large-diameter ultra-deep bored piles in soft soil strata according to claim 3, characterized in that, Electric push rods (19) are fixedly installed at the center of both sides of the inner wall of the equipment box (4). Arc-shaped clamps (20) are fixedly installed at the telescopic ends of the two electric push rods (19). The arc-shaped clamps (20) are clamped and connected to the rotating shaft (17).

5. The drilling and grouting device for large-diameter ultra-deep bored piles in soft soil strata according to claim 4, characterized in that, The outer wall of the equipment box (4) is provided with two support rods (5) that are fixedly connected to the base (1). The two support rods (5) are fixedly connected to the top of the corresponding support frame (2). The front of the two support frames (2) is fixedly installed with guide slides (3). The back sides of the fixed box (9) are provided with guide slide grooves that are compatible with the guide slides (3).

6. The drilling device for large-diameter ultra-deep bored piles in soft soil strata according to claim 5, characterized in that, A drive motor (16) is fixedly installed at the center of the back of the fixed box (9). The output shaft of the drive motor (16) extends into the interior of the fixed box (9) and a second bevel gear (15) is fixedly installed thereon. A first bevel gear (14) is fixedly installed on the surface of the top connecting pipe (8). The first bevel gear (14) meshes with the second bevel gear (15).

7. The drilling and grouting device for large-diameter ultra-deep bored piles in soft soil strata according to claim 1, characterized in that, The drilling assembly (7) comprises a fixed plate (701), a steel pipe (702), a geared disc (703), a connecting column (704), and a mounting ring (705). The fixed plate (701) has a flow channel inside. The mounting ring (705) is fixedly installed on the top of the fixed plate (701). The outer edge of the mounting ring (705) is fixedly connected to the end of the bottom connecting pipe (8) by bolts. The inside of the mounting ring (705) is rotatably connected to the connecting ring at the end of the hose (12) by bearings. The connecting column (704) is fixedly installed on the bottom of the fixed plate (701). The geared disc (703) is fixedly installed on the bottom end of the connecting column (704). Multiple steel pipes (702) are fixedly fixed at equal intervals along the circumference on the top of the geared disc (703). The multiple steel pipes (702) are connected to the flow channel inside the fixed plate (701).

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