Soft soil foundation treatment device

Abstract

The utility model discloses a soft soil foundation treatment device, which belongs to the technical field of soft soil foundation treatment and comprises a driving box, a plurality of supporting rods are fixedly mounted on the circumference of the driving box and are distributed in a circumferential array by taking the driving box as a circle center, and expanding rings are fixedly mounted among the outer sides of the supporting rods. A sun gear is rotationally mounted in the middle of the inner wall of the bottom end of the driving box, a plurality of planetary gears are rotationally mounted on the outer side of the inner wall of the bottom end of the driving box, and the circumference of the sun gear is meshed with the circumferences of the planetary gears. After grout is guided into the grouting barrel, part of the grout is automatically discharged from the grout outlet hole, part of the grout is discharged from the grout outlet hole only when the air cylinder extends to enable the movable pressing plate to move downwards to extrude the air bag column, and when the air bag column is extruded, the height of the air bag column is reduced, and the diameter of the air bag column is increased, so that the grout is efficiently discharged outwards; and it is also facilitated that grout remains at the bottom end in the grouting barrel, it is guaranteed that the grout is completely discharged, and the treatment effect on the soft soil foundation is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of soft soil foundation treatment technology, and in particular to a soft soil foundation treatment device. Background Technology

[0002] Soft soil refers to fine-grained soil deposited in coastal areas, lakes, valleys, and riverbanks, characterized by high natural water content, large void ratio, high compressibility, and low shear strength. It is characterized by high natural water content, large natural void ratio, high compressibility, low shear strength, small consolidation coefficient, long consolidation time, high sensitivity, high disturbance, poor permeability, complex layered distribution, and significant differences in physical and mechanical properties between layers. The properties of soft soil foundations vary from site to site and layer to layer, making them highly unpredictable. Even slight negligence during design and construction can lead to quality problems. Soft soil foundation treatment methods mainly include replacement layer method, drainage consolidation method, dynamic compaction method, vibro-compaction method, deep mixing method, high-pressure jet grouting method, and grouting method, among others. In highway construction, the most common method for soft soil foundations is the mixing pile method. It uses materials such as cement or lime as the main solidifying agent. Through specially designed deep mixing machinery, the soft soil and solidifying agent are forcibly mixed deep in the foundation. The series of physical and chemical reactions between the solidifying agent and the soft soil cause the soft soil to be consolidated into a foundation with integrity, water stability and a certain strength, so as to improve the bearing capacity of the foundation and reduce the amount of foundation settlement.

[0003] A search revealed a patent with publication number CN220117181U entitled "A Soft Soil Foundation Treatment Device for Highway Engineering." The technical problem it addresses is that adding reinforcing agents into holes is often done manually, which is very cumbersome. By incorporating a threaded column, threaded sliding column, first gear, second gear, and drill bit, the design is simple and provides good drilling results, avoiding the problem of overly complex structures that are inconvenient to operate. However, the following drawbacks still need to be addressed: the spraying efficiency of the grouting pipe may need improvement. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a soft soil foundation treatment device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A soft soil foundation treatment device includes a drive box. Multiple support rods are fixedly installed around the circumference of the drive box, and these support rods are arranged in a circular array around the drive box. An expansion ring is fixedly installed between the outer sides of the support rods. A sun gear is rotatably installed in the middle of the inner wall of the bottom end of the drive box. Multiple planetary gears are rotatably installed on the outer side of the inner wall of the bottom end of the drive box, and the circumference of the sun gear meshes with the circumference of the multiple planetary gears. The bottom end of each planetary gear extends through and to the outer side of the bottom end of the drive box, and a drill rod is fixedly installed at the bottom end of each planetary gear. A grouting cylinder is inserted between the sun gear and the drive box, and a driven bevel gear is fixedly installed at the upper circumference of the grouting cylinder. A guide pipe is fixedly connected to the top of the grouting cylinder. Multiple grout outlet holes are opened at the lower middle end of the grouting cylinder. A cylinder is fixedly installed at the top of the grouting cylinder, and a movable pressure plate is fixedly installed at the movable end of the cylinder. The movable pressure plate is located inside the grouting cylinder. An airbag column is fixedly installed between the inner wall of the bottom end of the grouting cylinder and the bottom end of the movable pressure plate.

[0007] Preferably, multiple insert rods are fixedly installed at the bottom of the expansion ring, and the multiple insert rods are arranged in a circular array with the drive box as the center. The multiple insert rods are intersected with multiple support rods, and each insert rod is a cone shape that is wider at the top and narrower at the bottom.

[0008] Preferably, the driven bevel gear is located inside the drive box, a drive motor is fixedly installed on the inner circumference of the drive box, and a drive bevel gear is fixedly installed at the output end of the drive motor, the circumference of the drive bevel gear meshing with the circumference of the driven bevel gear.

[0009] Preferably, the plurality of planetary gears and drill rods are arranged in a circular array with the sun gear as the center, and the grouting cylinder is located in the middle of the plurality of drill rods.

[0010] Preferably, the airbag column has multiple protrusions around its circumference.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. This utility model proposes a soft soil foundation treatment device. A drive motor operates, with an active bevel gear rotating a driven bevel gear. This causes the sun gear to rotate with the grouting cylinder, resulting in the sun gear driving multiple planetary gears. This causes the drill rod to rotate and drill into the soft soil foundation. Simultaneously, the grouting cylinder is inserted into the soft soil foundation as the drill rod penetrates deeper. A guide pipe is fixedly connected to the top of the grouting cylinder's circumference. Multiple grout outlet holes are opened at the lower end of the grouting cylinder's circumference. An airbag column is fixedly installed between the inner wall of the bottom end of the grouting cylinder and the bottom end of the movable pressure plate. When grout is introduced into the grouting cylinder, some grout automatically exits from the outlet holes, while some grout is discharged from the outlet holes only after the cylinder extends, causing the movable pressure plate to move downwards and squeeze the airbag column. When the airbag column is squeezed, its height decreases and its diameter increases. This not only helps the grout to be discharged efficiently but also helps to prevent grout residue from remaining at the bottom of the grouting cylinder, ensuring complete grout discharge and guaranteeing the treatment effect on the soft soil foundation.

[0013] 2. The soft soil foundation treatment device proposed in this utility model has a support rod, an expansion ring and an insertion rod arranged on the outside of the drive box. This not only increases the pressure area of ​​the device on the soft soil foundation, which helps to enhance the stability of the device, but also further strengthens the stability of the device when treating the soft soil foundation by inserting the insertion rod into the soft soil foundation by making each insertion rod a cone shape that is wider at the top and narrower at the bottom. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a soft soil foundation treatment device proposed in this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the drive box of a soft soil foundation treatment device proposed in this utility model;

[0016] Figure 3 This is a bottom view of the structure of a soft soil foundation treatment device proposed in this utility model;

[0017] Figure 4 This is a schematic diagram of the grouting cylinder of a soft soil foundation treatment device proposed in this utility model.

[0018] In the diagram: 1. Drive box, 2. Support rod, 3. Expanding ring, 4. Insert rod, 5. Sun gear, 6. Planetary gear, 7. Driven bevel gear, 8. Drive motor, 9. Driven bevel gear, 11. Guide pipe, 12. Cylinder, 13. Grouting cylinder, 14. Drill rod, 15. Grout outlet hole, 16. Movable pressure plate, 17. Airbag column. Detailed Implementation

[0019] Reference Figure 1-4 A soft soil foundation treatment device includes a drive box 1. Multiple support rods 2 are fixedly mounted circumferentially on the drive box 1, and the support rods 2 are arranged in a circular array with the drive box 1 as the center. An expansion ring 3 is fixedly installed between the outer sides of the multiple support rods 2 to increase the load-bearing area of ​​the device and enhance its stability. A sun gear 5 is rotatably mounted in the middle of the inner wall of the bottom end of the drive box 1, and multiple planetary gears 6 are rotatably mounted on the outer side of the inner wall of the bottom end of the drive box 1. The sun gear 5 meshes circumferentially with the multiple planetary gears 6, and the bottom end of each planetary gear 6 extends through and to the outer side of the bottom end of the drive box 1. The planetary gear 6 has a drill rod 14 fixedly installed at its bottom end. A grouting cylinder 13 is inserted between the sun gear 5 and the drive box 1. A driven bevel gear 7 is fixedly installed at the upper circumference of the grouting cylinder 13. A guide pipe 11 is fixedly connected to the top of the circumference of the grouting cylinder 13. Multiple grout outlet holes 15 are opened at the lower middle circumference of the grouting cylinder 13. A cylinder 12 is fixedly installed at the top of the grouting cylinder 13. A movable pressure plate 16 is fixedly installed at the movable end of the cylinder 12. The movable pressure plate 16 is located inside the grouting cylinder 13. An airbag column 17 is fixedly installed between the inner wall of the bottom end of the grouting cylinder 13 and the bottom end of the movable pressure plate 16.

[0020] In this utility model, multiple insertion rods 4 are fixedly installed at the bottom of the expansion ring 3, and the multiple insertion rods 4 are arranged in a circular array with the drive box 1 as the center. The multiple insertion rods 4 are intersected with the multiple support rods 2. Each insertion rod 4 is a cone shape that is wider at the top and narrower at the bottom. This not only expands the pressure area of ​​the device on the soft soil foundation, which helps to enhance the stability of the device, but also further strengthens the stability of the device when treating the soft soil foundation by inserting the insertion rods 4 into the soft soil foundation.

[0021] Driven bevel gear 7 is located inside drive box 1. Drive motor 8 is fixedly installed on the inner circumference of drive box 1, and drive bevel gear 9 is fixedly installed on the output end of drive motor 8. Drive bevel gear 9 meshes with driven bevel gear 7. Drive motor 8 works, drive bevel gear 9 drives driven bevel gear 7 to rotate, so that grouting cylinder 13 and its fixed parts rotate accordingly, achieving the effect of sun gear 5 driving multiple planetary gears 6 to rotate, so that drill rod 14 rotates and drills into soft soil foundation. At the same time, grouting cylinder 13 is also inserted into soft soil foundation as drill rod 14 goes deeper.

[0022] Multiple planetary gears 6 and drill rods 14 are arranged in a circular array with the sun gear 5 as the center, and the grouting cylinder 13 is located in the middle of multiple drill rods 14;

[0023] The airbag column 17 has multiple protrusions around its circumference, which helps to rub out the soil inside the grout hole 15 and prevent it from affecting the discharge of grout.

[0024] Working principle: Driven by the motor 8, the active bevel gear 9 drives the driven bevel gear 7 to rotate, causing the sun gear 5 to rotate with the grouting cylinder 13. This, in turn, drives multiple planetary gears 6 to rotate, causing the drill rod 14 to rotate and drill into the soft soil foundation. Simultaneously, the grouting cylinder 13 is also inserted into the soft soil foundation as the drill rod 14 penetrates deeper. A guide pipe 11 is fixedly connected to the top of the circumference of the grouting cylinder 13, and multiple grout outlet holes 15 are opened at the lower part of the circumference of the grouting cylinder 13. An airbag column 17 is fixedly installed between the wall and the bottom of the movable pressure plate 16. When grout is introduced into the grouting cylinder 13, part of the grout is automatically discharged from the grout outlet 15, and part of the grout is discharged from the grout outlet 15 by the extension of the cylinder 12, which causes the movable pressure plate 16 to move down and squeeze the airbag column 17. When the airbag column 17 is squeezed, its height becomes lower and its diameter becomes larger, which not only helps the grout to be discharged out efficiently, but also helps to avoid grout residue at the bottom of the grouting cylinder 13, ensuring that the grout is completely discharged and guaranteeing the treatment effect on the soft soil foundation.

[0025] The drive box 1 is equipped with a support rod 2, an expansion ring 3, and an insertion rod 4 on its outer side. This not only increases the pressure area of ​​the device on the soft soil foundation, which helps to enhance the stability of the device, but also, because each insertion rod 4 is a cone shape that is wider at the top and narrower at the bottom, the insertion rod 4 is inserted into the soft soil foundation, which further enhances the stability of the device when treating the soft soil foundation.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A soft soil foundation treatment device, comprising a driving box (1), a plurality of supporting rods (2) are fixedly installed in the periphery of the driving box (1), and the plurality of supporting rods (2) are distributed in a circular array with the driving box (1) as the center, and an expanding ring (3) is fixedly installed between the outer sides of the plurality of supporting rods (2), characterized in that, The intermediate rotating installation of the bottom end inner wall of the driving box (1) is provided with a sun gear (5), the outer side of the bottom end inner wall of the driving box (1) is provided with a plurality of planetary gears (6), and the circumference of the sun gear (5) is engaged with the circumference of the plurality of planetary gears (6), the bottom end of each planetary gear (6) extends to the outer side of the bottom end of the driving box (1), and the bottom end of the planetary gear (6) is fixedly provided with a drill rod (14), the sun gear (5) and the driving box (1) are inserted with a grouting barrel (13), the upper end of the circumference of the grouting barrel (13) is fixedly provided with a driven bevel gear (7), the top end of the circumference of the grouting barrel (13) is fixedly connected with a material guide pipe (11), a plurality of grouting holes (15) are formed in the middle lower end of the circumference of the grouting barrel (13), the top end of the grouting barrel (13) is fixedly provided with an air cylinder (12), and the movable end of the air cylinder (12) is fixedly provided with a movable pressing plate (16), the movable pressing plate (16) is located in the grouting barrel (13), and the bottom end of the movable pressing plate (16) is fixedly provided with an air bag column (17).

2. The soft ground treatment apparatus of claim 1, wherein The bottom end of the expansion ring (3) is fixedly provided with a plurality of insertion rods (4), and the plurality of insertion rods (4) are arranged in a circumferential array with the driving box (1) as the center, the plurality of insertion rods (4) are arranged in a cross distribution with the plurality of supporting rods (2), and each insertion rod (4) is in a tapered shape with a wide upper end and a narrow lower end.

3. The soft ground treatment apparatus of claim 1, wherein The driven bevel gear (7) is located in the driving box (1), the circumferential inner wall of the driving box (1) is fixedly provided with a driving motor (8), and the output end of the driving motor (8) is fixedly provided with a driving bevel gear (9), and the circumference of the driving bevel gear (9) is engaged with the circumference of the driven bevel gear (7).

4. The soft ground treatment apparatus of claim 1, wherein The plurality of planetary gears (6) and drill rods (14) are arranged in a circumferential array with the sun gear (5) as the center, and the grouting barrel (13) is located in the middle of the plurality of drill rods (14).

5. The soft ground treatment apparatus of claim 4, wherein The air bag column (17) is provided with a plurality of convex points.

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