Pile foundation hole cleaning device and method for pile foundation construction

Abstract

The invention relates to the technical field of pile foundation hole cleaning, and particularly discloses a pile foundation hole cleaning device and method for pile foundation construction, the pile foundation hole cleaning device comprises a liquid discharging pipe and a driving mechanism, a rotating mechanism is arranged at the bottom end of the liquid discharging pipe, a collecting mechanism is hinged to the rotating mechanism, and an extruding mechanism is slidably arranged in the rotating mechanism; according to the pile foundation hole cleaning device and method for pile foundation construction, mud and soil scratched by a reinforcement cage can be cleaned at a time, the pile foundation hole does not need to be cleaned for multiple times, and therefore the cleaning time of the pile foundation hole is saved, and the cleaning efficiency of the pile foundation hole is improved.

Description

Technical Field

[0001] This invention relates to the field of pile foundation hole cleaning technology, and specifically to a pile foundation hole cleaning device and method for pile foundation construction. Background Technology

[0002] When bored piles are used in the construction of building pile foundations, the depth, diameter, location, and shape of the borehole directly affect the quality of the pile and the straightness of the pile body. When the borehole inspection fully meets the design requirements, mud slurry is required to protect the borehole wall and prevent borehole collapse. During the lowering and installation of the reinforcing cage, due to the long time required, some of the suspended particulate matter in the mud slurry settles at the bottom of the hole under its own weight. Moreover, when the reinforcing cage is lowered and installed, it scrapes against the borehole wall, causing soil to fall and form sediment. Excessive sediment can affect the bearing capacity of the pile foundation and pose a huge hidden danger to the overall structural safety of the superstructure above the reinforcing cage. Therefore, the sediment at the bottom of the hole needs to be cleaned before the pile foundation concrete is poured.

[0003] Chinese patent document CN219951948U discloses a pile foundation hole sediment cleaning device, which includes a mud tank, a mud conveying pipe, a mud pump, and a casing adapted to the pile foundation hole; the casing is installed in the pile foundation hole, and a mud discharge outlet is provided on the upper side of the casing; one side of the mud conveying pipe is placed in the mud tank, and the other side of the mud conveying pipe is matched with the pile foundation hole, and a mud pump is installed on the mud conveying pipe.

[0004] However, the structural design of the aforementioned technologies is such that, although mud can be used to protect the walls of the pile foundation holes during the cleaning process, the pile foundation holes need to be cleaned twice, which takes a lot of time and results in low cleaning efficiency, thus leading to a delay in the construction progress.

[0005] Therefore, a pile foundation hole cleaning device and method for pile foundation construction is proposed to solve the problems mentioned above. Summary of the Invention

[0006] This invention provides a pile foundation hole cleaning device and method for pile foundation construction, aiming to solve the problem of low cleaning efficiency of pile foundation holes in related technologies.

[0007] The pile foundation hole cleaning device for pile foundation construction of the present invention includes a drain pipe and a drive mechanism. The bottom end of the drain pipe is provided with a rotating mechanism, a collection mechanism is hinged on the rotating mechanism, and a squeezing mechanism is slidably arranged inside the rotating mechanism. The rotating mechanism includes a docking assembly slidably connected in the drain pipe and a connecting assembly rotatably connected to the outside of the drain pipe. The driving mechanism can drive the connecting assembly to rotate. A guide assembly is slidably provided on the outer side of the bottom end of the docking assembly, and the guide assembly is connected to the connecting assembly. The docking assembly includes a connecting tube that is elastically slidably connected to the inside of the connecting assembly, a receiving groove opened inside the lower part of the connecting tube, and multiple protrusions installed on the top wall of the receiving groove. The pressing mechanism can be inserted between the multiple protrusions. The collection mechanism includes multiple collection components and a connecting belt installed between the multiple collection components; the collection component includes a movable plate hinged to the connecting pipe, a baffle installed on the movable plate, and a base plate installed at the bottom of the movable plate. The base plate is slidably set with the guide component. The squeezing mechanism drives the connecting pipe to move upward under the back thrust of the mud, so as to drive the movable plate to contact the inner wall of the pile hole.

[0008] When cleaning the pile foundation hole, the reinforcing cage is placed above the movable plate and the movable plate and reinforcing cage are simultaneously inserted into the pile foundation hole. As the device enters the pile foundation hole, the squeezing mechanism is pushed upward by the mud as the drain pipe moves downward, thus inserting the squeezing mechanism between multiple protrusions. As the drain pipe continues to move downward, the squeezing mechanism pushes the connecting pipe upward. During the upward movement of the connecting pipe, it can drive multiple movable plates to unfold and contact the inner wall of the pile foundation hole. Then, the drive mechanism drives the connecting pipe to rotate through the connecting component, thereby driving multiple movable plates to rotate, compacting the inner wall of the pile foundation hole, thereby reducing the falling of mud in the pile foundation hole. At the same time, the unfolded multiple movable plates can collect the mud scraped off by the reinforcing cage, preventing mud from entering the bottom of the pile foundation hole. During the unfolding of the movable plates, the mud in the pile foundation hole passes through the squeezing mechanism, the connecting pipe and the drain pipe in sequence and is discharged from the drain pipe, thus cleaning the mud and the mud scraped off by the reinforcing cage in one go.

[0009] Preferably, the docking assembly further includes a mounting plate, a hinge, multiple telescopic components, and multiple limiting strips. The mounting plate is located below the drain pipe and installed on the outside of the docking pipe. The hinge is installed on the outside of the bottom end of the docking pipe and located on the top of the limiting strips. The multiple telescopic components are arranged in a circular array on the mounting plate. The two ends of the telescopic components are respectively installed on the connecting assembly and the mounting plate. The multiple limiting strips are arranged in a circular array on the outside of the docking pipe and are slidably connected to the guide assembly.

[0010] Preferably, the hinge includes a mounting ring and a plurality of hinge seats, the mounting ring being mounted on the outside of the connecting tube, the plurality of hinge seats being mounted in a circular array on the outside of the mounting ring, and the movable plate being hinged to the hinge seats.

[0011] Preferably, the connecting assembly includes a rotating ring rotatably connected to the drain pipe, a plurality of mounting blocks mounted on the outside of the rotating ring, and a connecting rod mounted on the mounting blocks. The connecting pipe is located inside the rotating ring, and the bottom end of the connecting rod is mounted on the guide assembly.

[0012] Preferably, the guide assembly includes a sliding sleeve slidably connected to the outer side of the bottom end of the connecting tube, a plurality of connecting blocks installed on the outer side of the top end of the sliding sleeve, and a plurality of guide rods installed on the outer side of the bottom end of the sliding sleeve. The inner side of the sliding sleeve is provided with a plurality of slots slidably connected to the limiting strip. The bottom end of the connecting rod is installed on the connecting block, and the guide rod is slidably connected to the base plate.

[0013] When the drive mechanism drives the connecting component to rotate, the connecting component drives the sliding sleeve to rotate through the connecting rod on it. The sliding sleeve drives the connecting pipe to rotate through the limiting strip. When the movable plate is unfolded, the guide rod can guide the movable plate to ensure that the movable plate can stably contact the inner wall of the pile hole.

[0014] Preferably, the extrusion mechanism includes a plug-in assembly, an extrusion assembly, and a plurality of insert plates. The plug-in assembly is slidably disposed inside the connecting tube. The extrusion assembly is installed on the outer side of the bottom end of the plug-in assembly. The insert plates are arc-shaped, and the plurality of insert plates are installed in a circular array at the bottom end of the extrusion assembly.

[0015] Preferably, the plug-in assembly includes a connecting cylinder, a connecting tube, and a plurality of plugs. The connecting tube is installed at the top of the connecting cylinder and communicates with the connecting cylinder. The top of the connecting cylinder is slidably connected to the receiving groove of the connecting tube. The extrusion assembly is installed on the outer side of the bottom end of the connecting cylinder. The connecting tube is slidably connected to the connecting tube. The plurality of plugs are installed in a ring array on the outer side of the top end of the connecting cylinder and can be inserted into the gap between the plurality of protrusions.

[0016] As the connecting cylinder moves upward in the connecting tube, the insert block can be inserted between multiple protrusions. At this time, the connecting tube can drive the connecting cylinder to rotate through the protrusions.

[0017] Preferably, the extrusion assembly includes a pressure plate and multiple seals. The pressure plate is installed on the outer side of the bottom end of the connecting cylinder, and the bottom end of the connecting cylinder and the bottom end of the pressure plate are located on the same horizontal plane. The multiple seals are distributed in a ring array on the top of the pressure plate. The bottom end of the pressure plate is provided with a limiting groove for the sliding of the seals. The limiting groove is arc-shaped and has two sections, one of which has a width greater than the other.

[0018] When the pressure plate comes into contact with the mud in the pile hole, the reaction force of the mud can drive the connecting cylinder on the pressure plate to move upward in the connecting pipe and insert the insert block between multiple protrusions. As the connecting cylinder continues to move upward, it can push the connecting pipe to move upward in the drain pipe, so that multiple movable plates can unfold.

[0019] Preferably, the sealing element includes a sealing plate, a sliding plate, a limiting block, and a stop block. The sealing plate is slidably connected to the top of the pressure plate and located at the top of the limiting groove. The sliding plate is mounted on the sealing plate. The limiting block is mounted on the top of the sliding plate and slidably connected to the bottom plate. The bottom of the sliding plate passes through the limiting groove and extends to the outside of the limiting groove. The stop block is mounted on the bottom of the sliding plate.

[0020] By providing a sealing plate, the limiting groove can be covered to prevent mud from entering between the pressure plate and the bottom plate from the limiting groove. When the insert plate is inserted into the inner bottom wall of the pile hole, the bottom plate moves the sliding plate to the shorter end of the limiting groove through the limiting block. When the drain pipe moves upward, the bottom plate can drive the stop block to pass through the limiting groove so that the connecting cylinder and the connecting pipe can be separated.

[0021] A method for cleaning pile foundation holes during pile foundation construction, utilizing the aforementioned pile foundation hole cleaning device, includes the following steps: S1: Place the reinforcing cage above the movable plate, and then lower the reinforcing cage and cleaning device into the pile hole; S2: The drain pipe drives the connecting pipe to move downward, causing the pressure plate to be pushed upward by the mud in the pile hole. At this time, the pressure plate drives the insert on the connecting cylinder to insert between multiple protrusions. Then, the mud in the pile hole is pumped out by the mud pump. S3: As the drain pipe continues to move downward, under the reaction force of the mud in the pile hole, the insert on the connecting cylinder pushes the connecting pipe upward in the drain pipe, so that multiple movable plates adhere to the inner wall of the pile hole. S4: The drive mechanism drives the sliding sleeve to rotate, and the sliding sleeve drives the connecting pipe to rotate through the limit strip. The connecting pipe drives the movable plate to rotate and compacts the inner wall of the pile hole. During the downward movement of the movable plate, the soil that is scraped off by the steel cage is collected by the movable plate.

[0022] Its effect is that, when cleaning the pile foundation hole, the reinforcing cage is placed above the movable plate and the movable plate and the reinforcing cage are put into the pile foundation hole simultaneously. During the process of the device entering the pile foundation hole, as the drain pipe moves downward, the pressure plate is pushed upward by the mud, so that the insert on the connecting cylinder is inserted between multiple protrusions. As the drain pipe continues to move downward, the connecting cylinder pushes the connecting pipe upward. During the upward movement of the connecting pipe, it can drive multiple movable plates to unfold and contact the inner wall of the pile foundation hole. Then, the drive mechanism drives the connecting pipe to rotate through the connecting component, thereby driving multiple movable plates to rotate, so as to compact the inner wall of the pile foundation hole, thereby reducing the falling of soil in the pile foundation hole. At the same time, through the unfolded multiple movable plates, the soil scraped off by the reinforcing cage can be collected to prevent soil from entering the bottom of the pile foundation hole. During the unfolding of the movable plates, the mud in the pile foundation hole passes through the connecting cylinder, the connecting pipe and the drain pipe in sequence and is discharged from the drain pipe.

[0023] The beneficial effects of the present invention, achieved by adopting the above technical solution, are as follows: When cleaning the pile foundation hole, the reinforcing cage is placed above the movable plate, and the movable plate and the reinforcing cage are simultaneously inserted into the pile foundation hole. During the process of the device entering the pile foundation hole, as the drain pipe moves downward, the squeezing mechanism is pushed upward by the mud, thereby inserting the squeezing mechanism between multiple protrusions. As the drain pipe continues to move downward, the squeezing mechanism pushes the connecting pipe upward. During the upward movement of the connecting pipe, it can drive multiple movable plates to unfold and contact the inner wall of the pile foundation hole. Then, the drive mechanism drives the connecting pipe to rotate through the connecting assembly, thereby... Multiple movable plates rotate to compact the inner wall of the pile hole, thereby reducing soil loss. Simultaneously, the deployed plates collect soil scraped off by the reinforcing cage, preventing it from entering the bottom of the pile hole. During deployment, the mud in the pile hole passes through a squeezing mechanism, a connecting pipe, and a drain pipe, and is discharged through the drain pipe. This allows for the complete cleaning of the mud and soil scraped off by the reinforcing cage in one operation, eliminating the need for multiple cleanings and saving time, thus improving the cleaning efficiency of the pile hole. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the collection mechanism in a specific embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the rotating mechanism in a specific embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the internal structure of the waterproof cover in a specific embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the docking component in a specific embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the extrusion assembly in a specific embodiment of the present invention.

[0030] Figure 7 This is a schematic diagram of the structure of the collection component in a specific embodiment of the present invention.

[0031] Figure 8 This is a schematic diagram of the structure of the base plate in a specific embodiment of the present invention.

[0032] Figure 9 This is a schematic diagram of the plug-in assembly in a specific embodiment of the present invention.

[0033] Figure 10This is a schematic diagram of the limiting groove in a specific embodiment of the present invention.

[0034] Figure label: 10. Drainage pipe; 20. Drive mechanism; 21. Waterproof cover; 22. Motor; 23. Gear 1; 24. Gear 2; 30. Rotating mechanism; 31. Docking assembly; 311. Docking tube; 312. Mounting plate; 313. Telescopic component; 314. Mounting ring; 315. Hinge seat one; 316. Limiting strip; 317. Receiving groove; 318. Protrusion; 32. Connecting assembly; 321. Rotating ring; 322. Mounting block; 323. Connecting rod; 33. Guide assembly; 331. Sliding sleeve; 332. Connecting block; 333. Limiting plate; 334. Guide rod; 335. Slot; 40. Collection mechanism; 41. Collection assembly; 411. Movable plate; 412. Hinge seat II; 413. Baffle; 414. Base plate; 415. Sliding hole; 416. Sliding groove; 42. Hinge arm; 43. Connecting belt; 50. Extrusion mechanism; 51. Insertion assembly; 511. Connecting cylinder; 512. Insert block; 513. Connecting pipe; 52. Extrusion assembly; 521. Pressure plate; 522. Sealing plate; 523. Slide plate; 524. Limiting block; 525. Stop block; 526. Limiting groove; 53. Insert plate. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] like Figures 1 to 10 As shown, the pile foundation hole cleaning device for pile foundation construction of the present invention includes a drainage pipe 10, a drive mechanism 20, a rotating mechanism 30, a collecting mechanism 40, and a squeezing mechanism 50. The drive mechanism 20 is installed on the outside of the drainage pipe 10, the rotating mechanism 30 is disposed at the bottom end of the drainage pipe 10, and a mud pump is connected to the top end of the drainage pipe 10 to extract mud from the pile foundation hole. The collecting mechanism 40 is hinged to the rotating mechanism 30, and the squeezing mechanism 50 is slidably disposed inside the rotating mechanism 30.

[0037] When cleaning the inside of the pile foundation hole, the reinforcing cage is first placed above the collecting mechanism 40, and then the reinforcing cage and the device are simultaneously lowered into the pile foundation hole. When the device enters the pile foundation hole, the squeezing mechanism 50 contacts the inner wall of the pile foundation hole. As the device continues to move downward, the reaction force of the mud pushes the squeezing mechanism 50 upward and into contact with the bottom end of the collecting mechanism 40. During the upward movement of the squeezing mechanism 50, the rotating mechanism 30 drives the outer side of the collecting mechanism 40 to contact the inner wall of the pile foundation hole. After the collecting mechanism 40 contacts the outer wall of the pile foundation hole, the driving mechanism 20 drives the collecting mechanism 40 and the squeezing mechanism 50 to rotate synchronously through the rotating mechanism 30. As the collecting mechanism 40 rotates downward, it squeezes the inner wall of the pile foundation hole to compact the inner wall of the pile foundation hole, thereby reducing the mud debris rubbed off when the reinforcing cage is lowered.

[0038] like Figures 1 to 4 As shown, the drive mechanism 20 includes a waterproof cover 21, a motor 22, a first gear 23, and a second gear 24. The waterproof cover 21 is installed on the outside of the drain pipe 10, and the motor 22 is installed on one side of the inner bottom wall of the waterproof cover 21. The first gear 23 is installed on the drive shaft of the motor 22, and the second gear 24 is installed on the rotating mechanism 30 and meshes with the first gear 23.

[0039] When motor 22 drives gear 24 to rotate via gear 1 23, gear 24 can drive collection mechanism 40 to rotate via rotation mechanism 30 to compact the inner wall of pile foundation hole.

[0040] Continue to refer to Figures 1 to 4 As shown, the rotating mechanism 30 includes a docking assembly 31 and a connecting assembly 32. The connecting assembly 32 is disposed on the outside of the docking assembly 31, and a guide assembly 33 is slidably connected to the bottom end of the docking assembly 31. The inside of the docking assembly 31 is slidably connected to the pressing mechanism 50, and a gear 24 is mounted on the connecting assembly 32.

[0041] like Figure 3 and Figures 5 to 7As shown, the docking assembly 31 includes a connecting pipe 311, a mounting plate 312, a telescopic member 313, a hinge, a limiting strip 316, a receiving groove 317, and a protrusion 318. The top end of the connecting pipe 311 is slidably connected to the inner side of the drain pipe 10, and the mounting plate 312 is located below the drain pipe 10 and installed on the outer side of the connecting pipe 311. There are multiple telescopic members 313, which are arranged in a circular array on the mounting plate 312. The top end of the telescopic member 313 is installed on the connecting assembly 32, and the bottom end of the telescopic member 313 is installed on the top end of the mounting plate 312. In this embodiment, the telescopic member 313 is an elastic telescopic rod. The hinge is installed on the outer side of the bottom end of the connecting pipe 311. There are multiple limiting strips 316, which are arranged in a circular array on the outer side of the connecting pipe 311, and the limiting strips 316 are located at the bottom of the hinge. The limiting strips 316 are slidably connected to the guide assembly 33. A receiving groove 317 is formed below the inner wall of the connecting pipe 311, and the receiving groove 317 is annular in shape. There are multiple protrusions 318, which are arranged in a ring array on the inner top wall of the receiving groove 317, and the pressing mechanism 50 can be inserted between the multiple protrusions 318.

[0042] During the cleaning of the pile foundation hole, the mud in the pile foundation hole can enter the drain pipe 10 through the connecting pipe 311 to discharge the mud in the pile foundation hole.

[0043] The hinge includes a mounting ring 314 and a hinge seat 315. The mounting ring 314 is mounted on the outside of the connecting tube 311. There are multiple hinge seats 315, which are arranged in a ring array on the outside of the mounting ring 314. The collecting mechanism 40 is hinged to the hinge seats 315.

[0044] like Figure 3 and Figure 5 As shown, the connecting assembly 32 includes a rotating ring 321, mounting blocks 322, and connecting rods 323. The rotating ring 321 is rotatably connected to the outer side of the bottom end of the drain pipe 10, and the connecting pipe 311 is located inside the rotating ring 321. There are multiple mounting blocks 322 and multiple connecting rods 323, with the mounting blocks 322 arranged in a ring array on the outer side of the rotating ring 321. The top ends of the multiple connecting rods 323 are respectively mounted on the bottom ends of the multiple mounting blocks 322, and the bottom ends of the multiple connecting rods 323 are all mounted on the guide assembly 33. Gear 24 is mounted on the outer side of the multiple connecting rods 323, and the multiple connecting rods 323 are spaced apart from the multiple hinge seats 315.

[0045] When the motor 22 drives the gear 24 to rotate through the gear 1 23, the gear 24 can drive the guide assembly 33 to rotate through the connecting rod 323. At this time, the guide assembly 33 can drive the connecting pipe 311 to rotate through the limit bar 316. When the connecting pipe 311 rotates, it can drive the collecting mechanism 40 to rotate through the hinge seat 315 on the mounting ring 314.

[0046] Continue to refer to Figure 3 and Figure 5 As shown, the guide assembly 33 includes a sliding sleeve 331, a connecting block 332, a limiting plate 333, and guide rods 334. The sliding sleeve 331 is slidably connected to the outer side of the bottom end of the connecting tube 311, and its inner side has multiple slots 335 that are slidably connected to the limiting strip 316. The number of connecting blocks 332 is equal to the number of connecting rods 323. The connecting blocks 332 are installed on the outer side of the top end of the sliding sleeve 331, and their tops are fixed to the bottom ends of the connecting rods 323. There are multiple guide rods 334, which are arranged in a circular array on the outer side of the bottom end of the sliding sleeve 331. The limiting plate 333 is installed on the outer side of the sliding sleeve 331 and is located between the connecting blocks 332 and the guide rods 334.

[0047] When gear 24 drives connecting rod 323 to rotate, connecting rod 323 drives sliding sleeve 331 to rotate through connecting block 332, and sliding sleeve 331 can drive connecting pipe 311 to rotate through limit bar 316.

[0048] like Figures 1 to 2 and Figure 5 As shown, the collection mechanism 40 includes a collection assembly 41, a hinged arm 42, and a connecting belt 43. There are multiple collection assemblies 41, hinged arms 42, and connecting belts 43. The two ends of the hinged arms 42 are respectively hinged to the collection assembly 41 and the hinge seat 315. The collection assembly 41 is slidably connected to the guide rod 334, and multiple connecting belts 43 are installed between multiple collection assemblies 41.

[0049] As the connecting pipe 311 moves upward, it pushes the hinge arm 42 to move via the hinge seat 315 on the mounting ring 314. Simultaneously, the hinge arm 42 pushes the collecting assembly 41 to slide on the guide rod 334, causing the multiple collecting assemblies 41 to gradually move away from the connecting pipe 311 and fit against the inner wall of the pile hole. When the collecting assembly 41 fits against the inner wall of the pile hole, the soil scraped off by the reinforcing cage can fall into the collecting assembly 41, preventing soil from entering the bottom of the pile hole. During the process of the collecting assembly 41 fitting against the inner wall of the pile hole, the connecting strip 43 is gradually stretched and fits against the inner wall of the pile hole, preventing soil from entering the pile hole from the gap between the two collecting assemblies 41.

[0050] like Figure 2 , Figure 5 and Figures 7 to 8As shown, the collecting assembly 41 includes a movable plate 411, a second hinge seat 412, a baffle 413, and a base plate 414. The movable plate 411 is arc-shaped, and both ends of the movable plate 411 are connected to the connecting strap 43. The second hinge seat 412 is installed on the inner side of the movable plate 411, and one end of the hinge arm 42 is hinged to the second hinge seat 412. The baffle 413 is installed on the inner bottom of the movable plate 411 and is located at the bottom of the limiting plate 333. The base plate 414 is installed on the bottom of the movable plate 411. Both the baffle 413 and the base plate 414 are fan-shaped, and the baffle 413 is located at the top of the contact surface of the two base plates 414.

[0051] A sliding hole 415 is provided on one side of the base plate 414 for the guide rod 334 to slide. The guide rod 334 can support the base plate 414. A sliding groove 416 is provided on the bottom of the base plate 414.

[0052] When the articulated arm 42 pushes the movable plate 411 toward the inner wall of the pile hole, the base plate 414 slides on the guide rod 334. At this time, the connecting strip 43 between the two movable plates 411 is stretched, and the baffle 413 on the movable plate 411 can cover the gap between the two base plates 414 after they move away, to prevent the soil scraped off by the reinforcing cage from passing through the gap between the two base plates 414. When the movable plate 411 is in contact with the inner wall of the pile hole, the soil scraped off by the reinforcing cage falls between the multiple movable plates 411 for soil collection.

[0053] like Figures 1 to 2 and Figure 6 As shown, the extrusion mechanism 50 includes a connector 51, an extrusion assembly 52, and insert plates 53. The connector 51 is slidably disposed inside the connecting tube 311, and the extrusion assembly 52 is mounted on the outer side of the bottom end of the connector 51. There are multiple insert plates 53, and the insert plates 53 are arc-shaped, and the multiple insert plates 53 are mounted in a ring array at the bottom end of the extrusion assembly 52.

[0054] When the extrusion assembly 52 enters the pile hole, the drain pipe 10 drives the connecting pipe 311 downward through the telescopic member 313 on the rotating ring 321. At this time, under the reaction force of the mud in the pile hole, the extrusion assembly 52 can be pushed upward. During the upward movement of the extrusion assembly 52, the connecting pipe 311 can be pushed upward in the drain pipe 10, at which time the telescopic member 313 is compressed. During the upward movement of the connecting pipe 311, the mounting ring 314 pushes the hinge arm 42 to move through the hinge seat 315. At the same time, the hinge arm 42 pushes the movable plate 411 to move towards the inner wall of the pile hole. At this time, the connecting strip 43 between the two movable plates 411 is stretched. When the movable plate 411 is in contact with the inner wall of the pile hole, the mud scraped off by the reinforcing cage can fall into the movable plate 411 to prevent the mud from entering the bottom of the pile hole.

[0055] like Figure 2 , Figure 6 and Figure 9 As shown, the insertion assembly 51 includes a connecting cylinder 511, insertion blocks 512, and a connecting tube 513. The connecting tube 513 is installed at the top end of the connecting cylinder 511 and communicates with the connecting cylinder 511. The top end of the connecting cylinder 511 is slidably connected to the receiving groove 317 of the connecting tube 311. The pressing assembly 52 is installed on the outer side of the bottom end of the connecting cylinder 511. The connecting tube 513 is slidably connected to the connecting tube 311 and is sealed to the connecting tube 311. There are multiple insertion blocks 512, which are arranged in a ring array on the outer side of the top end of the connecting cylinder 511. The insertion blocks 512 can be inserted into the gaps between multiple protrusions 318.

[0056] When the extrusion assembly 52 is pushed back by the mud in the pile hole, the extrusion assembly 52 drives the connecting cylinder 511 to move upward in the receiving groove 317 of the connecting pipe 311, so that the insert block 512 is inserted into the gap between the multiple protrusions 318. As the extrusion assembly 52 continues to move upward, the insert block 512 can push the connecting pipe 311 upward, so that the movable plate 411 contacts the inner wall of the pile hole. When the insert block 512 is inserted into the gap between the multiple protrusions 318, the motor 22 drives the gear 24 to rotate through the gear 1 23. The gear 24 can drive the sliding sleeve 331 to rotate through the connecting rod 323. At this time, the sliding sleeve 331 can drive the connecting pipe 311 to rotate through the limiting strip 316. When the connecting pipe 311 rotates, the hinge seat 315 on the mounting ring 314 can drive the movable plate 411 to rotate, so as to compact the inner wall of the pile hole. The connecting pipe 311 can drive the connecting cylinder 511 to rotate through the protrusion 318, thereby driving the extrusion assembly 52 to rotate in the pile hole.

[0057] like Figure 2 , Figure 6 and Figures 8 to 10 As shown, the extrusion assembly 52 includes a pressure plate 521 and sealing elements. The pressure plate 521 is mounted on the outer side of the bottom end of the connecting cylinder 511, and the bottom end of the connecting cylinder 511 and the bottom end of the pressure plate 521 are on the same horizontal plane. There are multiple sealing elements, which are distributed in a ring array on the top of the pressure plate 521. The bottom end of the pressure plate 521 has a limiting groove 526 for the sliding of the sealing elements.

[0058] The sealing components include a sealing plate 522, a sliding plate 523, a limiting block 524, and a stop block 525. The sealing plate 522 is slidably connected to the top of the pressure plate 521 and located at the top of the limiting groove 526 to seal the limiting groove 526 and prevent mud from entering between the pressure plate 521 and the base plate 414 from the limiting groove 526. The sliding plate 523 is installed on top of the sealing plate 522. The limiting block 524 is installed on top of the sliding plate 523 and is slidably connected to the sliding groove 416 at the bottom of the base plate 414. The bottom of the sliding plate 523 passes through the sealing plate 522 and the limiting groove 526 in sequence and extends to the outside of the limiting groove 526. The stop block 525 is installed on the bottom of the sliding plate 523.

[0059] The limiting groove 526 is arc-shaped and has two sections, one of which is wider than the other. In the initial state, the slide plate 523 is located in the narrower section of the limiting groove 526, while the other section allows the stop 525 to pass through, thereby disengaging the seal from the pressure plate 521.

[0060] When the insert block 512 is inserted into the gap between the multiple protrusions 318, the motor 22 drives the gear 24 to rotate via the gear 1 23. The gear 24 drives the sliding sleeve 331 to rotate via the connecting rod 323. At this time, the sliding sleeve 331 can drive the connecting pipe 311 to rotate via the limiting strip 316. When the connecting pipe 311 rotates, it can drive the movable plate 411 and the pressure plate 521 to rotate synchronously. When the pressure plate 521 contacts the inner bottom wall of the pile hole, the insert plate 53 is inserted into the pile hole to restrict the rotation of the pressure plate 521. At this time, as the connecting pipe 311 continues to rotate, the bottom plate 414 drives the sliding plate 523 to enter the wider section of the limiting groove 526 via the limiting block 524. When the drain pipe 10 moves upward, the bottom plate 414 can drive the stop block 525 through the limit groove 526 via the slide plate 523 on the limit block 524. At this time, the connecting cylinder 511 is separated from the connecting pipe 311, so that the pressure plate 521 is left at the bottom of the pile hole and the bottom end of the steel cage is placed on the top of the pressure plate 521, making the steel cage more stable.

[0061] Working principle: When cleaning the pile foundation hole, the reinforcing cage is first placed above the movable plate 411, and then the reinforcing cage and cleaning device are lowered into the pile foundation hole. When the pressure plate 521 comes into contact with the mud in the pile foundation hole, the pressure plate 521 can be moved upward under the reaction force of the mud. During the upward movement of the pressure plate 521, it can drive the connecting cylinder 511 to move upward in the receiving groove 317 of the connecting pipe 311, so that the insert 512 can be inserted into the gap between the multiple protrusions 318.

[0062] As the drain pipe 10 continues to descend, the drain pipe 10 drives the connecting pipe 311 to continue descending via the telescopic component 313 on the rotating ring 321. At this time, the mud in the pile hole can push the pressure plate 521 to continue to rise, thereby pushing the connecting pipe 311 to rise in the drain pipe 10. During the upward movement of the connecting pipe 311, the mounting ring 314 pushes the hinge arm 42 to move via the hinge seat 315. The hinge arm 42 pushes the movable plate 411 to move towards the inner wall of the pile hole. At this time, the connecting strip 43 between the two movable plates 411 is stretched. When the movable plate 411 is in contact with the inner wall of the pile hole, the mud scraped off by the reinforcing cage can fall into the movable plate 411 to prevent the mud from entering the bottom of the pile hole. At the same time, the pressure plate 521 contacts the bottom of the base plate 414.

[0063] When the insert 512 is inserted into the gap between the multiple protrusions 318, the motor 22 drives the gear 24 to rotate via the gear 1 23. The gear 24, through the connecting rod 323, drives the sliding sleeve 331 to rotate. At this time, the sliding sleeve 331 drives the connecting pipe 311 to rotate via the limiting strip 316. When the connecting pipe 311 rotates, it drives the movable plate 411 to rotate via the hinge seat 315 on the mounting ring 314. At this time, the movable plate 411, which is in contact with the inner wall of the pile hole, can compact the inner wall of the pile hole to reduce the loss of soil in the pile hole. While the connecting pipe 311 is rotating, it also drives the connecting cylinder 511 to rotate via the protrusions 318, thereby driving the pressure plate 521 to rotate in the pile hole.

[0064] When the pressure plate 521 enters the pile hole, the mud in the pile hole enters the connecting cylinder 511 under the action of the mud pump. The mud entering the connecting cylinder 511 is discharged through the connecting pipe 513, the connecting pipe 311 and the drain pipe 10 in sequence to clean the mud in the pile hole.

[0065] During the downward movement of the device, when the reinforcing cage rubs against the inner wall of the pile hole, the falling soil can enter the inner side of the movable plate 411 for collection. When the pressure plate 521 contacts the inner bottom wall of the pile hole, the insert plate 53 is inserted into the pile hole to restrict the rotation of the pressure plate 521. As the connecting pipe 311 continues to rotate, the bottom plate 414, through the limiting block 524, drives the sliding plate 523 into the wider section of the limiting groove 526.

[0066] When the drain pipe 10 moves upward, the bottom plate 414, through the sliding plate 523 on the limiting block 524, can drive the stop block 525 through the limiting groove 526. At this time, the connecting cylinder 511 disengages from the connecting pipe 311, leaving the pressure plate 521 at the bottom of the pile hole and placing the bottom end of the reinforcing cage on the top of the pressure plate 521, making the reinforcing cage more stable. During the upward movement of the drain pipe 10, the movable plate 411 resets, and the connecting pipe 311 drives the movable plate 411 to move upward, removing the collected soil from the pile hole. This allows for the one-time cleaning of mud and soil scraped off by the reinforcing cage, eliminating the need for multiple cleanings of the pile hole, thus saving cleaning time and improving the cleaning efficiency of the pile hole.

[0067] like Figures 1 to 10 As shown, the pile foundation hole cleaning method for pile foundation construction of the present invention utilizes the above-mentioned pile foundation hole cleaning device and includes the following steps: S1: Place the reinforcing cage above the movable plate 411, and then lower the reinforcing cage and cleaning device into the pile hole; S2: The drain pipe 10 drives the connecting pipe 311 to move down, causing the pressure plate 521 to be pushed up by the mud in the pile hole. At this time, the pressure plate 521 drives the insert block 512 on the connecting cylinder 511 to insert between multiple protrusions 318. At this time, the mud in the pile hole is extracted by the mud pump. S3: As the drain pipe 10 continues to move downward, under the reaction force of the mud in the pile hole, the insert block 512 on the connecting cylinder 511 pushes the connecting pipe 311 upward in the drain pipe 10, so that multiple movable plates 411 are attached to the inner wall of the pile hole. S4: Motor 22 drives gear 24 to rotate through gear 1 23. Gear 24 drives sliding sleeve 331 to rotate through connecting rod 323. At this time, sliding sleeve 331 drives connecting pipe 311 to rotate through limit strip 316. Connecting pipe 311 drives movable plate 411 to rotate and compacts the inner wall of pile hole. During the downward movement of movable plate 411, soil that is scraped off by steel cage enters the inner side of movable plate 411 to collect the soil. S5: When the insert plate 53 is inserted into the bottom wall of the pile hole, as the connecting pipe 311 continues to rotate, the sliding plate 523 enters the wider section of the limiting groove 526. S6: When the drain pipe 10 moves upward, the movable plate 411 resets, and the bottom plate 414 drives the stop block 525 to pass through the limiting groove 526, so that the connecting cylinder 511 is separated from the connecting pipe 311, so that the pressure plate 521 remains at the bottom of the pile hole and the bottom end of the steel cage is placed at the top of the pressure plate 521. At the same time, the connecting pipe 311 drives the movable plate 411 to move upward, thereby removing the collected soil from the pile hole.

[0068] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A pile foundation hole cleaning device for pile foundation construction, comprising a drain pipe (10) and a drive mechanism (20), characterized in that, The bottom end of the drain pipe (10) is provided with a rotating mechanism (30), a collection mechanism (40) is hinged on the rotating mechanism (30), and a squeezing mechanism (50) is slidably arranged inside the rotating mechanism (30). The rotating mechanism (30) includes a docking component (31) slidably connected in the drain pipe (10) and a connecting component (32) rotatably connected to the outside of the drain pipe (10). The driving mechanism (20) can drive the connecting component (32) to rotate. A guide component (33) is slidably provided on the outside of the bottom end of the docking component (31), and the guide component (33) is connected to the connecting component (32). The docking assembly (31) includes a docking tube (311) that is elastically slidably connected to the inside of the connecting assembly (32), a receiving groove (317) opened in the lower part of the docking tube (311), and a plurality of protrusions (318) installed on the top wall of the receiving groove (317). The pressing mechanism (50) can be inserted between the plurality of protrusions (318). The collection mechanism (40) includes multiple collection components (41) and a connecting belt (43) installed between the multiple collection components (41); the collection component (41) includes a movable plate (411) hinged to the connecting pipe (311), a baffle (413) installed on the movable plate (411) and a bottom plate (414) installed at the bottom of the movable plate (411). The bottom plate (414) is slidably disposed with the guide component (33). The squeezing mechanism (50) drives the connecting pipe (311) to move upward under the back thrust of the mud, so as to drive the movable plate (411) to contact the inner wall of the pile hole.

2. The pile foundation hole cleaning device for pile foundation construction according to claim 1, characterized in that, The docking assembly (31) further includes a mounting plate (312), a hinge, multiple telescopic members (313), and multiple limiting strips (316). The mounting plate (312) is located below the drain pipe (10) and installed on the outside of the connecting pipe (311). The hinge is installed on the outside of the bottom end of the connecting pipe (311) and on the top of the limiting strips (316). The multiple telescopic members (313) are arranged in a ring array on the mounting plate (312). The two ends of the telescopic members (313) are respectively installed on the connecting assembly (32) and the mounting plate (312). The multiple limiting strips (316) are arranged in a ring array on the outside of the connecting pipe (311) and are slidably connected to the guide assembly (33).

3. The pile foundation hole cleaning device for pile foundation construction according to claim 2, characterized in that, The hinge includes a mounting ring (314) and a plurality of hinge seats (315). The mounting ring (314) is mounted on the outside of the connecting pipe (311), and the plurality of hinge seats (315) are mounted in a ring array on the outside of the mounting ring (314). The movable plate (411) is hinged to the hinge seats (315).

4. The pile foundation hole cleaning device for pile foundation construction according to claim 2, characterized in that, The connecting assembly (32) includes a rotating ring (321) rotatably connected to the drain pipe (10), a plurality of mounting blocks (322) mounted on the outside of the rotating ring (321), and a connecting rod (323) mounted on the mounting blocks (322). The connecting pipe (311) is located inside the rotating ring (321), and the bottom end of the connecting rod (323) is mounted on the guide assembly (33).

5. The pile foundation hole cleaning device for pile foundation construction according to claim 4, characterized in that, The guide assembly (33) includes a sliding sleeve (331) slidably connected to the outer side of the bottom end of the connecting tube (311), a plurality of connecting blocks (332) installed on the outer side of the top end of the sliding sleeve (331), and a plurality of guide rods (334) installed on the outer side of the bottom end of the sliding sleeve (331). The inner side of the sliding sleeve (331) is provided with a plurality of slots (335) slidably connected to the limiting strip (316). The bottom end of the connecting rod (323) is installed on the connecting block (332), and the guide rod (334) is slidably connected to the base plate (414).

6. The pile foundation hole cleaning device for pile foundation construction according to claim 2, characterized in that, The extrusion mechanism (50) includes a plug-in assembly (51), an extrusion assembly (52), and a plurality of insert plates (53). The plug-in assembly (51) is slidably disposed inside the connecting pipe (311). The extrusion assembly (52) is installed on the outer side of the bottom end of the plug-in assembly (51). The insert plates (53) are arc-shaped, and a plurality of insert plates (53) are arranged in a ring array at the bottom end of the extrusion assembly (52).

7. The pile foundation hole cleaning device for pile foundation construction according to claim 6, characterized in that, The plug-in assembly (51) includes a connecting cylinder (511), a connecting tube (513), and a plurality of plugs (512). The connecting tube (513) is installed on the top end of the connecting cylinder (511) and communicates with the connecting cylinder (511). The top end of the connecting cylinder (511) is slidably connected to the receiving groove (317) of the connecting tube (311). The extrusion assembly (52) is installed on the outer side of the bottom end of the connecting cylinder (511). The connecting tube (513) is slidably connected to the connecting tube (311). The plurality of plugs (512) are arranged in a ring array on the outer side of the top end of the connecting cylinder (511) and can be inserted into the gap between the plurality of protrusions (318).

8. The pile foundation hole cleaning device for pile foundation construction according to claim 7, characterized in that, The extrusion assembly (52) includes a pressure plate (521) and a plurality of seals. The pressure plate (521) is installed on the outer side of the bottom end of the connecting cylinder (511), and the bottom end of the connecting cylinder (511) and the bottom end of the pressure plate (521) are located on the same horizontal plane. The plurality of seals are arranged in a ring array on the top end of the pressure plate (521). The bottom end of the pressure plate (521) is provided with a limiting groove (526) for the sliding of the seals. The limiting groove (526) is arc-shaped and has two sections, one of which has a width greater than the other.

9. The pile foundation hole cleaning device for pile foundation construction according to claim 8, characterized in that, The sealing element includes a sealing plate (522), a sliding plate (523), a limiting block (524), and a stop block (525). The sealing plate (522) is slidably connected to the top of the pressure plate (521) and located at the top of the limiting groove (526). The sliding plate (523) is mounted on the sealing plate (522). The limiting block (524) is mounted on the top of the sliding plate (523) and slidably connected to the bottom plate (414). The bottom of the sliding plate (523) passes through the limiting groove (526) and extends to the outside of the limiting groove (526). The stop block (525) is mounted on the bottom of the sliding plate (523).

10. A method for cleaning pile foundation holes during pile foundation construction, characterized in that, The pile foundation hole cleaning device for pile foundation construction according to claim 9 includes the following steps: S1: Place the steel cage above the movable plate (411), and then lower the steel cage and cleaning device into the pile hole; S2: The drain pipe (10) drives the connecting pipe (311) to move down, causing the pressure plate (521) to be pushed up by the mud in the pile hole. At this time, the pressure plate (521) drives the insert (512) on the connecting cylinder (511) to insert between multiple protrusions (318). At this time, the mud in the pile hole is pumped out by the mud pump. S3: As the drain pipe (10) continues to move downward, under the reaction force of the mud in the pile hole, the insert (512) on the connecting tube (511) pushes the connecting pipe (311) upward in the drain pipe (10), so that multiple movable plates (411) are attached to the inner wall of the pile hole. S4: The drive mechanism (20) drives the sliding sleeve (331) to rotate. The sliding sleeve (331) drives the connecting pipe (311) to rotate through the limit strip (316). The connecting pipe (311) drives the movable plate (411) to rotate and compacts the inner wall of the pile hole. During the downward movement of the movable plate (411), the soil that is scraped off by the steel cage is collected by the movable plate (411).

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