A reinforcing device for building construction soft soil foundation assisted grouting and reaming

Abstract

The application discloses a building construction soft soil foundation auxiliary grouting and reaming reinforcing device in the technical field of building construction, which comprises a drilling motor, the drilling motor is arranged on the lifting end of external lifting equipment, the output end of the drilling motor is connected with a drill rod, the bottom end of the drill rod is provided with a conical drill bit, the conical drill bit comprises an upper connecting head, the upper connecting head is integrally formed with the bottom end of the drill rod, a middle connecting head is slidably connected to the upper connecting head, a bottom connecting head is connected to the bottom of the middle connecting head, the middle connecting head is driven by a lifting assembly to be accommodated into the drill rod, so that the driven rack can move downward to press the sliding block, the push rod can push the grouting head to move downward until the grouting head is located at the inner wall of the bottom of the upper connecting head, the grouting head can conveniently discharge grout for grouting, and the discharged grout can be prevented from flowing to the upper connecting head, so that the upper connecting head needs not to be cleaned.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a reinforcement device for soft soil foundations that assists in grouting and allows for hole expansion. Background Technology

[0002] In construction, soft soil foundation refers to a weak soil layer with low strength and high compressibility. Most of it contains a certain amount of organic matter. Due to the low strength and large settlement of soft soil, it often causes great harm to road engineering. If not handled properly, it will have a great impact on construction and use. Therefore, it is necessary to reinforce soft soil foundations during construction. Chemical grouting reinforcement technology is usually used for foundation reinforcement.

[0003] When using chemical grouting to reinforce soft soil foundations, the process usually involves drilling holes in the soft soil, then pulling out the drilling equipment and pouring the treated grout into the drilled holes to reinforce the soft soil foundation. However, because the soil in soft soil foundations is relatively soft, when the drill rod is pulled out of the grouting hole, the inner wall of the grouting hole is prone to collapse, causing the grouting hole to be buried. This not only makes subsequent grouting more troublesome but also results in poor reinforcement performance of the injected grout.

[0004] Therefore, a reinforcement device with a grout outlet inside the drill rod has emerged. During grouting, the reinforcement device can be moved upwards gradually to inject grout, and the drill rod can be kept in an enlarged state to avoid the problem of the grouting hole being buried due to the collapse of the inner wall of the grouting hole. However, the applicant found that this technical solution is inconvenient to discharge grout from the drill rod, and the grout discharged from the drill rod accumulates, making it difficult to spread and fill the grouting hole, which seriously affects the reinforcement efficiency of soft soil foundation. Therefore, we propose a reinforcement device for soft soil foundation construction that assists in grouting and can enlarge the hole. Summary of the Invention

[0005] The purpose of this invention is to provide a reinforcement device for soft soil foundations in building construction that assists in grouting and allows for hole expansion, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a reinforcement device for soft soil foundation construction that assists in grouting and can expand holes, comprising a drilling motor, wherein the drilling motor is installed on the lifting end of an external lifting device;

[0007] The output end of the drilling motor is connected to the drill rod, and a tapered drill bit is provided at the bottom end of the drill rod;

[0008] The tapered drill bit includes an upper connector, which is integrally formed with the bottom end of the drill rod. A middle connector is slidably connected to the upper connector, and a bottom connector is fitted to the bottom of the middle connector. The bottom connector is connected to a connecting assembly, which is mounted on a lifting assembly and connected to the middle connector.

[0009] The top of the drill rod is uniformly provided with installation pipes, which are movably connected to the equipment pipeline for inputting slurry from the outside. The bottom end of each installation pipe is provided with a flexible hose located inside the drill rod, and the bottom end of each flexible hose is provided with a slurry outlet head, which is connected to the telescopic component.

[0010] As a preferred embodiment of the reinforcement device for soft soil foundation grouting and hole expansion in building construction according to the present invention, the lifting assembly includes multiple sets of electric telescopic rods with identical structures. The tops of the multiple sets of electric telescopic rods are all set inside the drill rod, the output ends of the multiple sets of electric telescopic rods are all provided with active racks, and the bottom ends of the multiple sets of active racks are all connected to the intermediate connector.

[0011] As a preferred embodiment of the reinforcement device for soft soil foundation auxiliary grouting and hole expansion in building construction as described in this invention, wherein: multiple sets of active racks are meshed with gears, and the gears are sleeved on rotating shafts, and the rotating shafts are rotatably connected to the inside of the drill rod through bearings, and the side of the gears away from the active racks are meshed with driven racks located inside the drill rod.

[0012] As a preferred embodiment of the reinforcement device for soft soil foundation auxiliary grouting and hole expansion in building construction according to the present invention, the driven rack has an inverted L-shaped structure, the vertical section of the driven rack is meshed with a gear, and the horizontal section of the driven rack is slidably connected inside the drill rod.

[0013] As a preferred embodiment of the reinforcement device for auxiliary grouting and hole expansion in soft soil foundation of the present invention, the telescopic component includes an installation block, which is slidably connected to the upper connector. A return spring is provided on the installation block and is connected to the upper connector. A push rod is hinged on the installation block, and the top end of the push rod is hinged to a slider. The slider is slidably connected to the drill rod.

[0014] As a preferred embodiment of the reinforcement device for soft soil foundation auxiliary grouting and hole expansion in building construction according to the present invention, wherein: multiple sets of driven racks are respectively located directly above multiple sets of sliders.

[0015] As a preferred embodiment of the reinforcement device for soft soil foundation grouting and hole expansion in building construction according to the present invention, the connecting assembly includes a connecting plate, which is connected to multiple sets of active racks. An electric push rod is provided at the bottom of the connecting plate, and a fixing plate is connected to the output end of the electric push rod. Fixing rods are provided on both sides of the bottom of the fixing plate, and the bottom ends of the two sets of fixing rods are connected to the bottom connector. A rotary motor is provided at the bottom of the fixing plate, and a lever is evenly provided at the output end of the rotary motor.

[0016] As a preferred embodiment of the reinforcement device for soft soil foundation auxiliary grouting and hole expansion in building construction according to the present invention, wherein: the push plate is provided with an inclined surface.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: By driving the connecting head into the drill rod through the lifting component, the driven rack can move downward to squeeze the slider, which in turn pushes the grout outlet head downward until it is located at the bottom inner wall of the upper connecting head. This not only facilitates the discharge of grout from the grout outlet head for grouting, but also prevents the discharged grout from flowing onto the upper connecting head, thus avoiding the need for cleaning the upper connecting head. Before grouting, the fixed plate is driven downward by the electric push rod, which in turn drives the bottom connecting head downward until the deflector plate is located below the upper connecting head. During grouting, the deflector plate can be rotated to spread the flowing grout, preventing it from accumulating in the middle, thus assisting in grouting and allowing the grout to quickly fill the grouting hole, improving the reinforcement efficiency of soft soil foundations. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a reinforcement device for soft soil foundation construction that can assist in grouting and expand holes, according to the present invention.

[0019] Figure 2 This is a partial structural schematic diagram of a reinforcement device for soft soil foundation construction that can assist in grouting and expand holes, according to the present invention.

[0020] Figure 3 This is a schematic diagram of the connecting component structure of a reinforcement device for soft soil foundation construction that can assist in grouting and expand holes, according to the present invention.

[0021] Figure 4 This is a top view schematic diagram of the jacking plate structure described in the present invention, which is a reinforcement device for soft soil foundation construction that assists in grouting and allows for hole expansion.

[0022] In the diagram: 1. Drilling motor; 2. Drill rod; 3. Upper connector; 4. Mounting pipe; 5. Hose; 6. Mounting block; 7. Slurry outlet; 8. Electric telescopic rod; 9. Driven rack; 10. Middle connector; 11. Bottom connector; 12. Gear; 13. Driven rack; 14. Slider; 15. Push rod; 16. Return spring; 17. Connecting plate; 18. Electric push rod; 19. Fixing plate; 20. Fixing rod; 21. Rotary motor; 22. Pulley. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1

[0025] Reference Figures 1 to 3 A reinforcement device for soft soil foundation construction that assists in grouting and can expand holes includes a drilling motor 1, which is installed on the lifting end of an external lifting device.

[0026] The output end of the drilling motor 1 is connected to the drill rod 2, and a tapered drill bit is provided at the bottom end of the drill rod 2;

[0027] The tapered drill bit includes an upper connector 3, which is integrally formed with the bottom end of the drill rod 2. A middle connector 10 is slidably connected to the upper connector 3. The middle connector 10 can be retracted upward into the drill rod 2 through the upper connector 3. A bottom connector 11 is attached to the bottom of the middle connector 10. The bottom connector 11 is connected to a connecting component. The connecting component is set on the lifting component and is connected to the middle connector 10.

[0028] The top of the drill rod 2 is evenly provided with installation pipes 4, which are all in movable communication with the equipment pipeline for external slurry input. The bottom end of each installation pipe 4 is provided with a flexible hose 5 located inside the drill rod 2, and the bottom end of each flexible hose 5 is provided with a slurry outlet head 7. Slurry is input into the installation pipe 4 through the equipment pipeline for external slurry input, and the slurry can be discharged through the flexible hose 5 and the slurry outlet head 7. The slurry outlet head 7 is connected to the telescopic component.

[0029] The lifting assembly includes multiple sets of identical electric telescopic rods 8. The tops of the multiple sets of electric telescopic rods 8 are all located inside the drill rod 2. The output ends of the multiple sets of electric telescopic rods 8 are all equipped with active racks 9. The bottom ends of the multiple sets of active racks 9 are all connected to the intermediate connector 10. The electric telescopic rods 8 drive the active racks 9 to move upward, so that the intermediate connector 10 moves upward and is stored inside the drill rod 2, so that the slurry can be discharged.

[0030] Multiple sets of active racks 9 are meshed with gears 12, and the gears 12 are sleeved on the rotating shaft. The rotating shaft is rotatably connected to the inside of the drill rod 2 through bearings. The side of the gear 12 away from the active rack 9 is meshed with a driven rack 13 located inside the drill rod 2. When the active rack 9 moves upward, it drives the gear 12 to rotate, which in turn drives the driven rack 13 to move synchronously.

[0031] The driven rack 13 has an inverted L-shaped structure. The vertical section of the driven rack 13 is meshed with the gear 12, and the horizontal section of the driven rack 13 is slidably connected inside the drill rod 2. When the driven rack 13 is subjected to force, it can slide vertically inside the drill rod 2.

[0032] The telescopic assembly includes a mounting block 6, which is slidably connected to the upper connector 3. A return spring 16 is provided on the mounting block 6 and is connected to the upper connector 3. The return spring 16 allows the discharge head 7 to be automatically retracted into the upper connector 3. A push rod 15 is hinged to the mounting block 6. The top end of the push rod 15 is hinged to the slider 14. The slider 14 is slidably connected to the drill rod 2. By vertically moving the slider 14, the push rod 15 can drive the mounting block 6 to slide, so that the discharge head 7 moves accordingly.

[0033] Multiple sets of driven racks 13 are located directly above multiple sets of sliders 14, so that after the driven racks 13 move downward, they can press down on the sliders 14, causing the sliders 14 to also move downward.

[0034] The connecting assembly includes a connecting plate 17, which is connected to multiple sets of active racks 9, so that when the active racks 9 drive the middle connecting head 10 to move, the connecting plate 17 moves accordingly. An electric push rod 18 is provided at the bottom of the connecting plate 17, and the output end of the electric push rod 18 is connected to a fixed plate 19. Fixed rods 20 are provided on both sides of the bottom of the fixed plate 19, and the bottom ends of the two sets of fixed rods 20 are connected to the bottom connecting head 11. When the connecting plate 17 moves, the fixed plate 19 drives the bottom connecting head 11 to move together through the fixed rods 20. A rotary motor 21 is provided at the bottom of the fixed plate 19, and a deflector plate 22 is evenly provided at the output end of the rotary motor 21. During grouting, the rotary motor 21 drives the deflector plate 22 to rotate, which can spread the flowing grout and prevent it from accumulating in the middle, thus assisting in grouting.

[0035] Example 2

[0036] Reference Figure 4 The deflector plate 22 is provided with an inclined surface, so that when the deflector plate 22 is used to separate the slurry accumulated in the middle, the rotating inclined surface can contact the slurry, so as to better separate the slurry.

[0037] The rest of the structure is the same as in Example 1.

[0038] Reinforcement process: An external lifting device moves the drilling motor 1 downwards, simultaneously activating it. This causes the drill rod 2 to rotate, which in turn rotates the upper connector 3, middle connector 10, and bottom connector 11, drilling grouting holes at the desired locations in the soft soil foundation. Then, the electric telescopic rod 8 drives the active rack 9 upwards, causing the middle connector 10 to move upwards and retract into the drill rod 2. The upward movement of the active rack 9 causes the gear 12 to rotate, driving the driven rack 13 downwards. As the middle connector 10 retracts the bottom connector 11 upwards via the connecting assembly, the driven rack 13 contacts the slider 14 and presses it downwards. This pushes the mounting block 6 via the push rod 15. The mounting block 6 overcomes the spring force of the return spring 16, causing the grout outlet 7 to move downwards until it is located on the inner wall of the bottom of the upper connector 3. This not only facilitates the discharge of grout from the outlet head 7 for grouting, but also prevents the discharged grout from flowing onto the upper connector 3, thus avoiding the need to clean the upper connector 3. Before grouting, the electric push rod 18 drives the fixing plate 19 downward, causing the fixing rod 20 to move the bottom connector 11 downward until the lever 22 is below the upper connector 3, i.e., below the outlet head 7. At this point, grout is input into the installation pipe 4 through the external grout input equipment pipeline, and then discharged through the hose 5 and outlet head 7. Simultaneously, the external lifting device drives the drill rod 2 upward, keeping the grouting hole in an enlarged state. During grouting, the rotary motor 21 drives the lever 22 to rotate, spreading the discharged grout and preventing it from accumulating in the middle, thus assisting in grouting and allowing the grout to quickly fill the grouting hole, improving the reinforcement efficiency of soft soil foundations.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reinforcement device for soft soil foundation construction that assists in grouting and allows for hole expansion, characterized in that: include, Drilling motor (1), wherein the drilling motor (1) is installed on the lifting end of the external lifting equipment; The output end of the drilling motor (1) is connected to the drill rod (2), and a tapered drill bit is provided at the bottom end of the drill rod (2); The tapered drill bit includes an upper connector (3), which is integrally formed with the bottom end of the drill rod (2). A middle connector (10) is slidably connected to the upper connector (3), and a bottom connector (11) is attached to the bottom of the middle connector (10). The bottom connector (11) is connected to a connecting component, which is mounted on a lifting component and connected to the middle connector (10). The top of the drill rod (2) is uniformly provided with installation pipes (4), and the installation pipes (4) are all connected to the equipment pipeline for inputting slurry from the outside. The bottom end of the installation pipes (4) is provided with a flexible hose (5) located inside the drill rod (2), and the bottom end of the flexible hose (5) is provided with a slurry outlet head (7). The slurry outlet head (7) is connected to the telescopic component. The lifting assembly includes multiple sets of electric telescopic rods (8) with the same structure. The top of each set of electric telescopic rods (8) is set inside the drill rod (2). The output end of each set of electric telescopic rods (8) is provided with an active rack (9). The bottom end of each set of active racks (9) is connected to the middle connector (10). The connecting assembly includes a connecting plate (17), which is connected to multiple sets of active racks (9). An electric push rod (18) is provided at the bottom of the connecting plate (17), and a fixing plate (19) is connected to the output end of the electric push rod (18). Fixing rods (20) are provided on both sides of the bottom of the fixing plate (19), and the bottom ends of the two sets of fixing rods (20) are connected to the bottom connector (11).

2. The reinforcement device for soft soil foundation auxiliary grouting and hole expansion in building construction according to claim 1, characterized in that: Each of the multiple sets of active racks (9) is meshed with a gear (12), and the gear (12) is sleeved on a rotating shaft. The rotating shaft is rotatably connected to the inside of the drill rod (2) through bearings. The side of the gear (12) away from the active rack (9) is meshed with a driven rack (13) located inside the drill rod (2).

3. The reinforcement device for soft soil foundation grouting with expandable boreholes as described in claim 2, characterized in that: The driven rack (13) has an inverted L-shaped structure. The vertical section of the driven rack (13) is meshed with the gear (12), and the horizontal section of the driven rack (13) is slidably connected inside the drill rod (2).

4. The reinforcement device for soft soil foundation auxiliary grouting and hole expansion in building construction according to claim 3, characterized in that: The telescopic assembly includes a mounting block (6), which is slidably connected to the upper connector (3). A return spring (16) is provided on the mounting block (6) and is connected to the upper connector (3). A push rod (15) is hinged on the mounting block (6). The top end of the push rod (15) is hinged to the slider (14), which is slidably connected to the drill rod (2).

5. The reinforcement device for soft soil foundation auxiliary grouting and hole expansion in building construction according to claim 4, characterized in that: The multiple sets of driven racks (13) are located directly above the multiple sets of sliders (14).

6. The reinforcement device for soft soil foundation auxiliary grouting and hole expansion in building construction according to claim 1, characterized in that: A rotary motor (21) is provided at the bottom of the fixed plate (19), and a lever (22) is evenly provided at the output end of the rotary motor (21).

7. The reinforcement device for soft soil foundation auxiliary grouting and borehole expansion as described in claim 6, characterized in that: The dial plate (22) is provided with an inclined surface.

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