Deep muddy soft soil foundation reinforcing device

Abstract

The utility model discloses a deep muddy soft soil foundation reinforcing device, which relates to the technical field of foundation reinforcement, can reinforce a deep muddy soft soil foundation below a building by forming a consolidation body meeting the design requirement in the underlying soft soil foundation of the building by using a drilling mechanism, is small in size, is mounted on a push plate, and is convenient to use. The device is simple in structure and convenient for a user to move, meanwhile, during reinforcement, only a hole needs to be formed in the concrete floor of the building, disturbance and damage to the building are reduced, the device is further provided with a reinforcement mechanism, four arc-shaped plates for reinforcement are utilized to extrude the inner wall of a drilled hole in the concrete floor, the device can be fixed to the concrete floor, and the stability of the device is enhanced; in the subsequent drilling process, the straightness and perpendicularity of a drilled hole can be kept, the accuracy of the hole position is improved, the stability performance is enhanced, the hole wall is prevented from deforming, and therefore it is guaranteed that the hole wall keeps the needed shape and size, and the subsequent reinforcing quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of foundation reinforcement technology, specifically a device for reinforcing deep silty soft soil foundations. Background Technology

[0002] Deep soft soil is known to be saturated cohesive soil with low shear strength, high compressibility, low permeability, and high natural water content. Silt and silty soil are the main types of soft soil. Due to its high compressibility and low strength, this type of soil experiences large and uneven foundation settlement, which can easily lead to cracking of building walls and overturning of buildings.

[0003] Currently, conventional methods for reinforcing deep silty soft soil foundations include: pile foundation method (when the silt layer is thick and it is difficult to carry out deep treatment over a large area, pile driving can be used for reinforcement), replacement method (when the silt layer is thin, the silt layer can be replaced with sandy loam, lime soil, coarse sand, cement soil, etc. for foundation treatment), grouting method (using air pressure, hydraulic pressure or electrochemical principles to inject cement slurry, cement mortar or other grout into the foundation medium to reinforce the silty soft soil foundation), surcharge preloading method (before the construction of the project, use a fill load greater than or equal to the design load to promote the early consolidation and settlement of the foundation and improve the foundation strength), and vacuum preloading method (insert vertical drainage channels in the soft foundation that needs to be reinforced, then lay a sand cushion layer, and then cover it with an airtight film).

[0004] The above-mentioned conventional methods for reinforcing deep silty soft soil foundations generally require large construction equipment and have a long construction period. They are suitable for new outdoor construction projects, but are generally difficult to implement in the interior of existing buildings and would affect normal indoor work.

[0005] Therefore, those skilled in the art have proposed a deep silty soft soil foundation reinforcement device that can reinforce the soft soil foundation beneath a building. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a deep silty soft soil foundation reinforcement device, which solves the problems mentioned above.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a deep silty soft soil foundation reinforcement device, including a trolley, wherein a rectangular opening is provided at the center of the upper surface of the trolley.

[0008] A drilling mechanism is provided directly above the rectangular opening. The drilling mechanism includes a rectangular base, a metal tube is rotatably mounted on the upper side of the rectangular base, a drill bit is mounted on the lower end of the metal tube, and multiple evenly distributed liquid outlet holes are opened on the side of the drill bit and are connected to the metal tube.

[0009] A sliding sleeve is slidably provided on the side of the metal tube, and multiple evenly distributed upper expanding arms are rotatably installed on the side of the sliding sleeve. A lower expanding arm is rotatably installed at the lower end of the upper expanding arm and rotatably connected to the side of the metal tube.

[0010] It also includes a lifting mechanism for driving the drilling mechanism to descend.

[0011] As a further technical solution of this utility model, a fixing mechanism is provided directly below the drilling mechanism. The fixing mechanism includes a mounting plate adapted to the rectangular opening, and a circular opening is provided at the center of the upper side of the mounting plate.

[0012] As a further technical solution of this utility model, the side of the mounting plate has four rectangular slots on the outside of the circular opening, and a rectangular rod is installed in the slots.

[0013] As a further technical solution of this utility model, an L-shaped plate is slidably arranged on the rectangular rod, a spring is sleeved on one side of the L-shaped plate on the rectangular rod, and an arc-shaped plate is installed on the lower side of the L-shaped plate.

[0014] As a further technical solution of this utility model, two second electric push rods are symmetrically installed on the upper side of the mounting plate, and an annular plate is installed on the upper end of the two second electric push rods together.

[0015] As a further technical solution of this utility model, a trapezoidal block is installed on the upper side of the L-shaped plate, and a pressing block with its lower surface in contact with the inclined surface of the corresponding trapezoidal block is installed on the lower side of the annular plate directly below each trapezoidal block.

[0016] Beneficial effects

[0017] This invention provides a device for reinforcing deep silty soft soil foundations. Compared with existing technologies, it has the following advantages:

[0018] 1. A deep silty soft soil foundation reinforcement device, wherein the drill bit and reamer in the drilling mechanism are drilled into the soft soil through a hole in the concrete floor, and then grout is sprayed while drilling, forming a solidified body that meets the design requirements in the soft soil foundation under the building, thereby reinforcing the deep silty soft soil foundation under the building. This device is small in size and is installed on a push plate, which is convenient for users to move. At the same time, only a hole needs to be drilled in the concrete floor of the building during reinforcement, reducing disturbance and damage to the building.

[0019] 2. A deep silty soft soil foundation reinforcement device, which is further equipped with a reinforcement mechanism. The device can be fixed on the concrete floor by using four arc-shaped plates to press against the inner wall of the drill hole. This enhances the stability of the device and helps to maintain the straightness and verticality of the drill hole during subsequent drilling, improves the accuracy of the hole position, and enhances stability to prevent the hole wall from deforming. This ensures that the hole wall maintains the required shape and size, thereby guaranteeing the quality of subsequent reinforcement. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a deep silty soft soil foundation reinforcement device.

[0021] Figure 2 This is a schematic diagram of the drilling mechanism of a deep silty soft soil foundation reinforcement device.

[0022] Figure 3 This is a schematic diagram of the second state structure of the drilling mechanism of a deep silty soft soil foundation reinforcement device.

[0023] Figure 4 This is a cross-sectional view of a drill bit assembly for a deep silty soft soil foundation reinforcement device.

[0024] Figure 5 This is a schematic diagram of the lifting mechanism of a deep silty soft soil foundation reinforcement device.

[0025] Figure 6 This is a schematic diagram of the fixing mechanism of a deep silty soft soil foundation reinforcement device.

[0026] Figure 7 This is a cross-sectional view of the fixing mechanism of a deep silty soft soil foundation reinforcement device.

[0027] Figure 8 This is a disassembled diagram of the push rod mechanism of a deep silty soft soil foundation reinforcement device.

[0028] In the diagram: 1. Trolley; 2. Drilling mechanism; 201. Rectangular base; 202. Metal tube; 203. Sliding sleeve; 204. Lower reaming arm; 205. Upper reaming arm; 206. Protrusion; 207. Drill bit; 208. Liquid outlet; 209. Ring; 210. First electric push rod; 211. Drilling motor; 212. First gear; 213. Second gear; 3. Lifting mechanism; 301. Strip frame; 302. Lifting motor; 303. Screw 304. Threaded seat; 4. Fixing mechanism; 401. Mounting plate; 402. Rectangular rod; 403. L-shaped plate; 404. Arc plate; 405. Spring; 406. Trapezoidal block; 407. Second electric push rod; 408. Ring plate; 409. Lower pressure block; 410. Third electric push rod; 5. Push rod mechanism; 501. Main tube; 502. Adjustment hole; 503. Secondary rod; 504. Positioning hole; 505. Pin; 506. Push rod. Detailed Implementation

[0029] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present disclosure are shown in the accompanying drawings.

[0030] like Figure 1-8 As shown, a deep silty soft soil foundation reinforcement device disclosed herein may include:

[0031] Example 1:

[0032] like Figure 1 As shown, the device includes a trolley 1 with a rectangular opening at the center of its upper surface. The trolley 1 is used to install other components inside the device, and the entire device can be moved by pushing the trolley 1.

[0033] like Figure 1 , Figure 2 and Figure 4 As shown, a drilling mechanism 2 is provided directly above the rectangular opening. The drilling mechanism 2 includes a rectangular base 201. A metal tube 202 is rotatably mounted on the upper side of the rectangular base 201. A drill bit 207 is installed at the lower end of the metal tube 202. Multiple evenly distributed liquid outlet holes 208 are opened on the side of the drill bit 207 and are connected to the metal tube 202. During the drilling process, the curing agent slurry is fed in from the upper end of the metal tube 202 and then sprayed out from each liquid outlet hole 208.

[0034] like Figure 2As shown, a first gear 212 is installed on the side of the metal tube 202 near the rectangular base 201. A drilling motor 211 is installed on the upper side of the rectangular base 201 on one side. A second gear 213 that meshes with the first gear 212 is installed on the drive end of the drilling motor 211. When the drilling motor 211 is running, it drives the first gear 212 to rotate, which in turn drives the metal tube 202 to rotate through the second gear 213.

[0035] like Figure 2 As shown, a sliding sleeve 203 is slidably provided on the side of the metal tube 202. An annular groove is opened on the side of the sliding sleeve 203, and a circular ring 209 is rotatably installed in the annular groove. A first electric push rod 210 with the end of the telescopic arm fixedly connected to the circular ring 209 is installed on the upper side of the rectangular base 201. When the metal tube 202 rotates, it will also drive the sliding sleeve 203 to rotate. When the first electric push rod 210 extends or retracts, it can drive the sliding sleeve 203 to slide up and down on the side of the metal tube 202 through the circular ring 209.

[0036] like Figure 2 and Figure 3 As shown, multiple evenly distributed upper expanding arms 205 are rotatably mounted on the side of the sliding sleeve 203. The lower end of the upper expanding arms 205 is rotatably mounted with a lower expanding arm 204 whose lower end is rotatably connected to the side of the metal tube 202. Both the lower expanding arm 204 and the upper expanding arm 205 have several evenly distributed protrusions 206 mounted on their sides. When the sliding sleeve 203 descends, it drives all the upper expanding arms 205 to descend, while forcing the lower expanding arm 204 to deflect around the rotatable connection point with the metal tube 202. At the same time, the connection point between the lower expanding arm 204 and the upper expanding arm 205 moves in the opposite direction to the metal tube 202, increasing the expanding diameter. The protrusions 206 enhance the expanding effect.

[0037] like Figure 1 and Figure 5 As shown, it also includes a lifting mechanism 3. The lifting mechanism 3 includes a strip frame 301 installed on the upper side of the trolley 1 and on the side of the drilling mechanism 2. A lifting motor 302 is installed at the upper end of the strip frame 301. The driving end of the lifting motor 302 extends into the frame of the strip frame 301 and is equipped with a screw 303 whose end is rotatably connected to its inner wall. The running lifting motor 302 drives the screw 303 to rotate.

[0038] like Figure 5 As shown, a threaded seat 304 is provided on the screw 303 and is slidably connected to the inner wall of the strip frame 301. The threaded seat 304 is fixedly connected to the rectangular seat 201. The rotating screw 303 drives the threaded seat 304 to descend, and the descending threaded seat 304 drives the rectangular seat 201 and the components mounted on it to descend.

[0039] In summary, the lifting motor 302 drives the screw 303 to rotate, thereby driving the threaded seat 304 to descend, which in turn drives the drilling mechanism 2 to descend, allowing the metal tube 202 to pass through the drill hole in the concrete floor and contact the soil. When the drilling motor 211 runs, it drives the first gear 212 to rotate, which in turn drives the metal tube 202 to rotate through the second gear 213. The rotating metal tube 202 drives the drill bit 207 to drill downwards. At the same time, the rotating lower reaming arm 204 and upper reaming arm 205 are used to enlarge the hole. The first electric push rod 210 extends and drives the sliding sleeve 203 to descend through the ring 209. Simultaneously, all the upper expanding arms 205 descend, forcing the lower expanding arm 204 to deflect around the rotatable connection with the metal pipe 202. This causes the connection between the lower expanding arm 204 and the upper expanding arm 205 to move in the opposite direction to the metal pipe 202, increasing the diameter of the expanded hole. During the expansion process, the curing agent slurry is fed from the upper end of the metal pipe 202 and then sprayed out from each outlet hole 208. While drilling and stirring, the slurry is sprayed, which can form a solidified body that meets the design requirements in the underlying soft soil foundation. At the same time, because the curing agent is continuously sprayed out from the outlet hole 208, soil is prevented from entering the outlet hole 208.

[0040] It should be noted that the type of curing agent sprayed can be cement slurry, dry powder cement, etc., and can be adjusted at any time according to the design strength.

[0041] like Figure 1 and Figure 6 As shown, a fixing mechanism 4 is provided directly below the drilling mechanism 2. The fixing mechanism 4 includes a mounting plate 401 that is adapted to the rectangular opening. A circular opening is provided at the center of the upper side of the mounting plate 401. Two telescopic arms are symmetrically mounted on the upper side of the trolley 1. The ends of the telescopic arms are fixedly connected to the upper side of the rectangular base 201. The telescopic third electric push rods 410 can drive the mounting plate 401 to rise and fall.

[0042] like Figure 6 and Figure 7 As shown, the side of the mounting plate 401 has four rectangular slots on the outer side of the circular opening. A rectangular rod 402 is installed in the slots. An L-shaped plate 403 is slidably mounted on the rectangular rod 402. An arc plate 404 is installed on the lower side of the L-shaped plate 403. The arc plate 404 is moved into the drill hole on the concrete floor, so that the four arc plates 404 move away from each other until each arc plate 404 presses against the inner wall of the drill hole. The moving arc plate 404 will also drive the L-shaped plate 403 to slide on the rectangular rod 402.

[0043] like Figure 6 As shown, two second electric push rods 407 are symmetrically installed on the upper side of the mounting plate 401. The upper ends of the two second electric push rods 407 are jointly installed with an annular plate 408. The telescopic second electric push rods 407 can drive the annular plate 408 to rise and fall.

[0044] like Figure 6 and Figure 7 As shown, a spring 405 is fitted on one side of the L-shaped plate 403 on the rectangular rod 402. A trapezoidal block 406 is installed on the upper side of the L-shaped plate 403. A pressing block 409 with its lower surface in contact with the inclined surface of the corresponding trapezoidal block 406 is installed on the lower side of the annular plate 408 directly below each trapezoidal block 406. The descending annular plate 408 drives the pressing block 409 to press down on the inclined surface of the corresponding trapezoidal block 406, thereby causing the four L-shaped plates 403 to move away from each other. The moving L-shaped plates 403 will compress the spring 405.

[0045] In summary, the moving device aligns the circular opening of the drilling mechanism 2 with the drilling hole in the concrete floor. Then, the two third electric push rods 410 extend, causing the four arc-shaped plates 404 to enter the drilling hole. Afterward, the two second electric push rods 407 shorten, causing the annular plate 408 to descend. The descending annular plate 408 causes the lower pressure block 409 to press down on the inclined surface of the corresponding trapezoidal block 406, thereby causing the four L-shaped plates 403 to move away from each other, and causing the four arc-shaped plates 404 to move away from each other until they squeeze the inner wall of the drilling hole, thus fixing the device on the concrete floor. At the same time, the moving L-shaped plate 403 will compress the spring 405. To release the fixation, simply extend the second electric push rod 407, causing the liquid outlet 208 to rise, allowing the lower pressure block 409 to release the compression of the trapezoidal block 406. The spring 405 rebounds, causing the L-shaped plate 403 to return to its original position, allowing the four arc-shaped plates 404 to move inward, thus releasing the fixation.

[0046] Example 2:

[0047] like Figure 1 and Figure 8 As shown, based on Embodiment 1, a push rod mechanism 5 is also provided on the upper edge of the trolley 1. The push rod mechanism 5 includes two symmetrically arranged main tubes 501. Each main tube 501 has a secondary rod 503 that extends to the outside at its upper end slidably inside the tube. A push rod 506 is installed between the two secondary rods 503. The push rod 506 can pull the secondary rod 503 to slide inside the main tube 501.

[0048] The side of the adjustment hole 502 has several evenly distributed adjustment holes 502. The side of the auxiliary rod 503 has a positioning hole 504 that is aligned with one of the adjustment holes 502. A pin 505 is provided between the positioning hole 504 and the adjustment hole 502 aligned with it. Pulling out the pin 505 will release the fixation between the auxiliary rod 503 and the main rod 501.

[0049] In summary, pull out the two pins 505, pull up the push rod 506 to raise the two auxiliary rods 503 until the height of the push rod 506 is suitable for the user's height, that is, when the user's arms are on the push rod 506, the waist is in a normal straight position. Then, finely adjust the height of the push rod 506 so that the two positioning holes 504 are aligned with the two adjustment holes 502 of the same height. Then, insert the pins 505 into each positioning hole 504 and the adjustment hole 502 that are aligned with it. The adjustment is complete.

[0050] The working principle of this utility model:

[0051] Before use, a concrete drilling machine is used to drill holes in the concrete floor until the holes come into contact with the soil beneath the concrete. Then, the device is moved so that the circular opening of the drilling mechanism 2 is aligned with the hole in the concrete floor. The four wheels of the trolley 1 are braked. Then, the two third electric push rods 410 extend to drive the four arc-shaped plates 404 into the hole. Then, the two second electric push rods 407 shorten to drive the annular plate 408 to descend. The descending annular plate 408 drives the lower pressure block 409 to press down on the inclined surface of the corresponding trapezoidal block 406, thereby causing the four L-shaped plates 403 to move away from each other, and causing the four arc-shaped plates 404 to move away from each other until they squeeze the inner wall of the hole, thus fixing the device on the concrete floor.

[0052] The lifting motor 302 drives the screw 303 to rotate, thereby driving the threaded seat 304 to descend, which in turn drives the drilling mechanism 2 to descend, allowing the metal tube 202 to pass through the drill hole in the concrete floor and contact the soil. When the drilling motor 211 is running, it drives the first gear 212 to rotate, which in turn drives the metal tube 202 to rotate through the second gear 213. The rotating metal tube 202 drives the drill bit 207 to drill downwards. At the same time, the rotating lower reaming arm 204 and upper reaming arm 205 are used to enlarge the hole. The first electric push rod 210 extends and passes through the ring. 209 drives the sliding sleeve 203 to descend, simultaneously driving all the upper expanding arms 205 to descend, forcing the lower expanding arm 204 to deflect around the rotatable connection with the metal pipe 202, causing the connection between the lower expanding arm 204 and the upper expanding arm 205 to move in the opposite direction to the metal pipe 202, increasing the diameter of the expanded hole. During the expanding process, the curing agent slurry is sent from the upper end of the metal pipe 202 and then sprayed out from each liquid outlet 208. While drilling and stirring, the slurry is sprayed, which can form a solidified body that meets the design requirements in the soft soil foundation under the building.

[0053] After completion, the first electric push rod 210 retracts, causing the sliding sleeve 203 to rise, thereby bringing the connection between the lower expanding arm 204 and the upper expanding arm 205 closer to the metal tube 202. Then, the lifting motor 302 drives the screw 303 to reverse, causing the metal tube 202 to move out of the drill hole. At the same time, the moving L-shaped plate 403 will compress the spring 405. To release the fixation, the second electric push rod 407 extends, causing the liquid outlet 208 to rise, allowing the lower pressure block 409 to release the pressure on the trapezoidal block 406. The spring 405 rebounds, causing the L-shaped plate 403 to return to its original position, allowing the four arc plates 404 to move inward, thus releasing the fixation. Then, the device can be pushed to the next reinforcement point to continue working.

[0054] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. A deep silty soft soil foundation reinforcement device, comprising a trolley (1), wherein a rectangular opening is provided at the center of the upper surface of the trolley (1), characterized in that: A drilling mechanism (2) is provided directly above the rectangular opening. The drilling mechanism (2) includes a rectangular base (201). A metal tube (202) is rotatably mounted on the upper side of the rectangular base (201). A drill bit (207) is mounted on the lower end of the metal tube (202). Multiple liquid outlet holes (208) are evenly distributed and communicate with the metal tube (202) on the side of the drill bit (207). The metal tube (202) is slidably provided with a sliding sleeve (203), and multiple evenly distributed upper expanding arms (205) are rotatably installed on the side of the sliding sleeve (203). The lower end of the upper expanding arm (205) is rotatably installed with a lower expanding arm (204) whose lower end is rotatably connected to the side of the metal tube (202). It also includes a lifting mechanism (3) for driving the drilling mechanism (2) to descend.

2. The deep silty soft soil foundation reinforcement device according to claim 1, characterized in that, A fixing mechanism (4) is provided directly below the drilling mechanism (2). The fixing mechanism (4) includes a mounting plate (401) adapted to the rectangular opening. A circular opening is provided at the center of the upper side of the mounting plate (401).

3. The deep silty soft soil foundation reinforcement device according to claim 2, characterized in that, The mounting plate (401) has four rectangular slots on its side outside the circular opening, and a rectangular rod (402) is installed in the slots.

4. The deep silty soft soil foundation reinforcement device according to claim 3, characterized in that, An L-shaped plate (403) is slidably disposed on the rectangular rod (402), and a spring (405) is sleeved on one side of the L-shaped plate (403) on the rectangular rod (402). An arc plate (404) is installed on the lower side of the L-shaped plate (403).

5. The deep silty soft soil foundation reinforcement device according to claim 4, characterized in that, Two second electric push rods (407) are symmetrically installed on the upper side of the mounting plate (401), and an annular plate (408) is installed on the upper end of the two second electric push rods (407).

6. The deep silty soft soil foundation reinforcement device according to claim 5, characterized in that, A trapezoidal block (406) is installed on the upper side of the L-shaped plate (403), and a pressing block (409) with its lower surface in contact with the inclined surface of the corresponding trapezoidal block (406) is installed on the lower side of the annular plate (408) directly below each trapezoidal block (406).

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