Pile foundation hole cleaning device and method for pile foundation construction

Abstract

The present application relates to the pile foundation hole cleaning technical field, specifically discloses a pile foundation hole cleaning device and method for pile foundation construction, which comprises a liquid discharge pipe and a driving mechanism, the bottom end of the liquid discharge pipe is provided with a rotating mechanism, the rotating mechanism is hingedly connected with a collecting mechanism, and the rotating mechanism is internally slidably provided with an extruding mechanism; the pile foundation hole cleaning device and method for pile foundation construction can clean the mud and the soil scratched by the reinforcement cage at one time, so that the pile foundation hole does not need to be cleaned multiple times, thereby saving the cleaning time of the pile foundation hole and improving the cleaning efficiency of the pile foundation hole.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pile hole cleaning, in particular to a pile hole cleaning device and method for pile construction. BACKGROUND

[0002] When a building pile foundation project adopts a bored pile construction technology, the depth, diameter, position and shape of the hole directly affect the pile quality and the straightness of the pile body. When the drilled hole is completely checked and meets the design requirements, mud wall protection needs to be taken to avoid the phenomenon of hole collapse. When the reinforcement cage is lowered and installed, the suspended particles in the mud will partially settle at the bottom of the hole under the action of gravity during the long period of time. Moreover, when the reinforcement cage is lowered and installed, the reinforcement cage will scratch the hole wall, causing the soil to fall and form sediment. If the sediment is too thick, it will affect the pile bearing capacity and cause great hidden dangers to the overall structure of the upper building.

[0003] A pile hole sediment cleaning device is disclosed in a Chinese patent document with the authorization announcement number CN219951948U. The pile hole sediment cleaning device includes a mud pool, a mud delivery pipe, a mud pump, and a buried protection cylinder adapted to the pile hole. The buried protection cylinder is installed in the pile hole, and the upper side of the buried protection cylinder is provided with a mud discharge outlet. One side of the mud delivery pipe is placed in the mud pool, and the other side of the mud delivery pipe is matched with the pile hole. The mud delivery pipe is installed with a mud pump.

[0004] However, the structure design of the above-mentioned related technology can protect the wall of the pile hole by mud during the pile hole cleaning process, but it needs to clean the pile hole twice, which takes a lot of time when cleaning the pile hole, resulting in low cleaning efficiency of the pile hole, which in turn causes the construction progress to be delayed.

[0005] Therefore, a pile hole cleaning device and method for pile construction are proposed to solve the problems mentioned above. SUMMARY

[0006] The present application provides a pile hole cleaning device and method for pile construction, which aims to solve the problem of low cleaning efficiency of the pile hole in related technology.

[0007] The pile hole cleaning device for pile construction of the present application comprises a drainage pipe and a driving mechanism, the bottom end of the drainage pipe is provided with a rotating mechanism, the rotating mechanism is hingedly connected with a collecting mechanism, and the inside of the rotating mechanism is slidably provided with an extruding mechanism;

[0008] The rotating mechanism comprises a butt joint assembly slidably connected in the drainage pipe and a connecting assembly rotatably connected outside the drainage pipe, the driving mechanism can drive the connecting assembly to rotate, the bottom end outside of the butt joint assembly is slidably provided with a guide assembly, and the guide assembly is connected with the connecting assembly.

[0009] The docking assembly comprises a docking pipe elastically and slidably connected inside the connecting assembly, a containing groove opened below the inside of the docking pipe, and a plurality of protrusions installed on the top wall of the containing groove, and the extrusion mechanism can be inserted between the plurality of protrusions;

[0010] The collecting mechanism comprises a plurality of collecting assemblies and a connecting belt installed between the plurality of collecting assemblies; the collecting assembly comprises a movable plate hingedly connected to the docking pipe, a baffle installed on the movable plate, and a bottom plate installed on the bottom of the movable plate, the bottom plate is slidably arranged with the guide assembly, and the extrusion mechanism is driven upward by the back thrust of the mud to make the movable plate contact the inner wall of the pile hole.

[0011] When the pile hole is cleaned, the reinforcement cage is placed above the movable plate and the movable plate and the reinforcement cage are simultaneously put into the pile hole, in the process of the device entering the pile hole, as the drain pipe moves downward, the extrusion mechanism is pushed upward by the back thrust of the mud, so that the extrusion mechanism is inserted between the plurality of protrusions, as the drain pipe continues to move downward, the extrusion mechanism pushes the docking pipe upward, in the process of the docking pipe moving upward, the plurality of movable plates can be unfolded and contacted with the inner wall of the pile hole, then the driving mechanism drives the docking pipe to rotate through the connecting assembly, so as to drive the plurality of movable plates to rotate, so as to tamp the inner wall of the pile hole, thereby reducing the falling of the soil in the pile hole, at the same time, through the unfolded plurality of movable plates, the soil scratched by the reinforcement cage can be collected, so as to prevent the soil from entering the bottom of the pile hole, in the process of unfolding the movable plate, the mud in the pile hole passes through the extrusion mechanism, the docking pipe and the drain pipe in turn and is discharged from the drain pipe, so that the mud and the soil scratched by the reinforcement cage can be cleaned at one time.

[0012] Preferably, the docking assembly further comprises a mounting disc, a hinge, a plurality of telescopic pieces and a plurality of limiting strips, the mounting disc is located below the drain pipe and is installed on the outside of the docking pipe, the hinge is installed on the outside of the bottom end of the docking pipe and is located on the top of the limiting strip, a plurality of the telescopic pieces are arranged in a ring array on the mounting disc, both ends of the telescopic piece are respectively installed on the connecting assembly and the mounting disc, and a plurality of the limiting strips are arranged in a ring array on the outside of the docking pipe and are slidably connected with the guide assembly.

[0013] Preferably, the hinge comprises a mounting ring and a plurality of hinge seats one, the mounting ring is installed on the outside of the docking pipe, a plurality of the hinge seats one are arranged in a ring array on the outside of the mounting ring, and the movable plate is hingedly connected with the hinge seat one.

[0014] Preferably, the connecting assembly comprises a rotating ring rotatably connected to the drain pipe, a plurality of mounting blocks installed on the outside of the rotating ring, and a connecting rod installed on the mounting block, the docking pipe is located on the inside of the rotating ring, and the bottom end of the connecting rod is installed on the guide assembly.

[0015] Preferably, the guide assembly comprises a sliding sleeve slidably connected to the outside of the bottom end of the adapter pipe, a plurality of connecting blocks mounted on the outside of the top end of the sliding sleeve, and a plurality of guide rods mounted on the outside of the bottom end of the sliding sleeve, the inside of the sliding sleeve is provided with a plurality of insertion slots slidably connected to the limiting strips, the bottom end of the connecting rod is mounted on the connecting block, and the guide rod is slidably connected to the bottom plate.

[0016] When the driving mechanism drives the connecting assembly to rotate, the connecting assembly drives the sliding sleeve to rotate through the connecting rod thereon, and the sliding sleeve can drive the adapter pipe to rotate through the limiting strips. When the movable plate is unfolded, the movable plate can be guided by the guide rod to ensure that the movable plate can stably contact the inner wall of the pile hole.

[0017] Preferably, the extrusion mechanism comprises a plug-in assembly, an extrusion assembly, and a plurality of insertion plates, the plug-in assembly is slidably arranged in the inside of the adapter pipe, the extrusion assembly is mounted on the outside of the bottom end of the plug-in assembly, the insertion plates are arc-shaped, and a plurality of the insertion plates are annularly arranged on the bottom end of the extrusion assembly.

[0018] Preferably, the plug-in assembly comprises a connecting cylinder, a connecting pipe, and a plurality of plug-in blocks, the connecting pipe is mounted on the top end of the connecting cylinder and communicates with the connecting cylinder, the top end of the connecting cylinder is slidably connected in the accommodating groove of the adapter pipe, the extrusion assembly is mounted on the outside of the bottom end of the connecting cylinder, the connecting pipe is slidably connected in the adapter pipe, a plurality of the plug-in blocks are annularly arranged on the outside of the top end of the connecting cylinder and can be inserted into the gaps between the plurality of protrusions.

[0019] During the upward movement of the connecting cylinder in the adapter pipe, the plug-in blocks can be inserted between the plurality of protrusions, at which time the adapter pipe can drive the connecting cylinder to rotate through the protrusions.

[0020] Preferably, the extrusion assembly comprises a pressing plate and a plurality of sealing members, the pressing plate is mounted on the outside of the bottom end of the connecting cylinder, and the bottom end of the connecting cylinder and the bottom end of the pressing plate are located on the same horizontal plane, a plurality of the sealing members are annularly arranged on the top end of the pressing plate, the bottom end of the pressing plate is provided with a limiting slot for the sliding of the sealing members, the limiting slot is arc-shaped, and the limiting slot has two sections, one section of the limiting slot has a width greater than that of the other section.

[0021] When the pressing plate contacts the mud in the pile hole, the pressing plate can drive the connecting cylinder on the adapter pipe to move upward in the adapter pipe and make the plug-in blocks inserted between the plurality of protrusions through the counterforce of the mud, and as the connecting cylinder continues to move upward, the connecting cylinder can push the adapter pipe to move upward in the drainage pipe to make the plurality of movable plates unfold.

[0022] Preferably, the sealing member comprises a sealing plate, a sliding plate, a limiting block and a stopper, the sealing plate is slidingly connected to the top end of the pressing plate and located at the top of the limiting groove, the sliding plate is installed on the sealing plate, the limiting block is installed on the top of the sliding plate and slidingly connected to the bottom plate, the bottom of the sliding plate penetrates through the limiting groove and extends to the outside of the limiting groove, and the stopper is installed on the bottom of the sliding plate.

[0023] By being provided with the sealing plate, the limiting groove can be covered to prevent the mud from entering between the pressing plate and the bottom plate, when the inserting plate is inserted into the inner bottom wall of the pile hole, the bottom plate drives the sliding plate to move to the shorter end of the limiting groove through the limiting block, when the drain pipe moves upward, the bottom plate can drive the stopper to penetrate through the limiting groove to make the connecting cylinder and the butt joint pipe separate.

[0024] A pile hole cleaning method for pile construction is performed by using the pile hole cleaning device for pile construction, comprising the following steps:

[0025] S1: placing the reinforcement cage above the movable plate, and then lowering the reinforcement cage and the cleaning device into the pile hole;

[0026] S2: the drain pipe drives the butt joint pipe to move downward, the pressing plate is pushed upward by the mud in the pile hole, at this time, the inserting block on the connecting cylinder is inserted between the plurality of convex blocks, and the mud in the pile hole is pumped out by the mud pump;

[0027] S3: the drain pipe continues to move downward, under the reaction force of the mud in the pile hole, the inserting block on the connecting cylinder pushes the butt joint pipe to move upward in the drain pipe, and the plurality of movable plates are attached to the inner wall of the pile hole;

[0028] S4: the driving mechanism drives the sliding sleeve to rotate, the sliding sleeve drives the butt joint pipe to rotate through the limiting strip, the butt joint pipe drives the movable plates to rotate, and the inner wall of the pile hole is tamped, and the soil scraped off by the reinforcement cage in the process of moving downward is collected by the movable plates.

[0029] The effect is that when the pile hole is cleaned, the reinforcement cage is placed above the movable plate and the movable plate and the reinforcement cage are simultaneously placed into the pile hole, in the process of the device entering the pile hole, the pressing plate is pushed upward by the mud as the drain pipe moves downward, so that the inserting block on the connecting cylinder is inserted between the plurality of convex blocks, as the drain pipe continues to move downward, the connecting cylinder pushes the butt joint pipe to move upward, the butt joint pipe can drive the plurality of movable plates to expand and contact the inner wall of the pile hole in the process of moving upward, then the driving mechanism drives the butt joint pipe to rotate through the connecting assembly, so as to drive the plurality of movable plates to rotate to tamp the inner wall of the pile hole, thereby reducing the falling of the soil in the pile hole, at the same time, the soil scraped off by the reinforcement cage can be collected through the plurality of expanded movable plates, to prevent the soil from entering the bottom of the pile hole, in the process of expanding the movable plates, the mud in the pile hole is sequentially discharged from the drain pipe through the connecting cylinder, the butt joint pipe and the drain pipe.

[0030] With the above technical scheme, the pile hole is cleaned, the reinforcing cage is placed above the movable plate and the movable plate and the reinforcing cage are simultaneously put into the pile hole, in the process that the device enters the pile hole, the extrusion mechanism is pushed upward by the mud, so that the extrusion mechanism is inserted between the plurality of protrusions, with the continuous downward movement of the drainage pipe, the extrusion mechanism pushes the butt joint pipe upward, in the process of upward movement of the butt joint pipe, the plurality of movable plates can be unfolded and contacted with the inner wall of the pile hole, then the driving mechanism drives the butt joint pipe to rotate through the connecting assembly, so as to drive the plurality of movable plates to rotate, so as to tamp the inner wall of the pile hole, thereby reducing the falling of the soil in the pile hole, at the same time, the soil scratched by the reinforcing cage can be collected through the plurality of unfolded movable plates, so as to prevent the soil from entering the bottom of the pile hole, in the process of unfolding of the movable plate, the mud in the pile hole is discharged from the drainage pipe by sequentially passing through the extrusion mechanism, the butt joint pipe and the drainage pipe, so that the mud and the soil scratched by the reinforcing cage can be cleaned at one time, the pile hole does not need to be cleaned for multiple times, so that the cleaning time of the pile hole is saved, and the cleaning efficiency of the pile hole is improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a whole structure schematic view of the specific embodiment in the application.

[0032] Figure 2 It is a structure schematic view of the collecting mechanism of the specific embodiment in the application.

[0033] Figure 3 It is a structure schematic view of the rotating mechanism of the specific embodiment in the application.

[0034] Figure 4 It is an internal structure schematic view of the waterproof cover of the specific embodiment in the application.

[0035] Figure 5 It is a structure schematic view of the butt joint assembly of the specific embodiment in the application.

[0036] Figure 6 It is a structure schematic view of the extrusion assembly of the specific embodiment in the application.

[0037] Figure 7 It is a structure schematic view of the collecting assembly of the specific embodiment in the application.

[0038] Figure 8 It is a structure schematic view of the bottom plate of the specific embodiment in the application.

[0039] Figure 9 It is a structure schematic view of the plug-in assembly of the specific embodiment in the application.

[0040] Figure 10 This is a schematic diagram of the limiting groove in a specific embodiment of the present invention.

[0041] Figure label:

[0042] 10. Drainage pipe;

[0043] 20. Drive mechanism; 21. Waterproof cover; 22. Motor; 23. Gear 1; 24. Gear 2;

[0044] 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;

[0045] 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;

[0046] 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

[0047] 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.

[0048] 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.

[0049] When the interior of the pile hole is cleaned, the reinforcement cage is first placed above the collecting mechanism 40, and then the reinforcement cage and the device are synchronously lowered into the pile hole. When the device enters the pile hole, the extrusion mechanism 50 is in contact with the inner wall of the pile hole. With the continuous downward movement of the device, the extrusion mechanism 50 can be pushed upward and in contact with the bottom end of the collecting mechanism 40 under the reaction force of the mud. During the upward movement of the extrusion mechanism 50, the outer side of the collecting mechanism 40 can be in contact with the inner wall of the pile hole by the rotating mechanism 30. When the collecting mechanism 40 is in contact with the outer wall of the pile hole, the driving mechanism 20 drives the collecting mechanism 40 and the extrusion mechanism 50 to rotate synchronously by the rotating mechanism 30. During the downward rotation of the collecting mechanism 40, the inner wall of the pile hole can be extruded to compact the inner wall of the pile hole, thereby reducing the mud slurry scraped down by the reinforcement cage during the lowering.

[0050] As shown in Figures 1 to 4 , the driving mechanism 20 includes a waterproof cover 21, a motor 22, a gear one 23 and a gear two 24. The waterproof cover 21 is installed on the outside of the drainage pipe 10, and the motor 22 is installed on the inner bottom wall side of the waterproof cover 21. The gear one 23 is installed on the driving shaft of the motor 22, and the gear two 24 is installed on the rotating mechanism 30 and engaged with the gear one 23.

[0051] When the motor 22 drives the gear two 24 to rotate through the gear one 23, the gear two 24 can drive the collecting mechanism 40 to rotate through the rotating mechanism 30 to compact the inner wall of the pile hole.

[0052] Continuing to refer to Figures 1 to 4 , the rotating mechanism 30 includes a docking assembly 31 and a connecting assembly 32. The connecting assembly 32 is arranged on the outside of the docking assembly 31, and the docking assembly 31 has a guide assembly 33 slidingly connected to the bottom end. The inner side of the docking assembly 31 is slidingly connected with the extrusion mechanism 50, and the gear two 24 is installed on the connecting assembly 32.

[0053] As shown in Figure 3 and Figures 5 to 7As shown, the docking assembly 31 comprises a docking pipe 311, a mounting disc 312, a plurality of telescopic members 313, a plurality of hinge seats 315, a plurality of limiting strips 316, a plurality of accommodating grooves 317, and a plurality of protrusions 318. The top end of the docking pipe 311 is slidingly connected to the inner side of the drain pipe 10, and the mounting disc 312 is located below the drain pipe 10 and mounted on the outer side of the docking pipe 311. The plurality of telescopic members 313 are arranged in an annular array on the mounting disc 312, the top ends of the telescopic members 313 are mounted on the connecting assembly 32, and the bottom ends of the telescopic members 313 are mounted on the top end of the mounting disc 312. In this embodiment, the telescopic members 313 are elastic telescopic rods. The hinge seat 315 is mounted on the bottom end of the outer side of the docking pipe 311, the plurality of limiting strips 316 are arranged in an annular array on the outer side of the docking pipe 311 and located at the bottom of the hinge seat 315, and the limiting strips 316 are slidingly connected to the guide assembly 33. The accommodating groove 317 is formed in the inner wall of the docking pipe 311 below, and the shape of the accommodating groove 317 is annular. The plurality of protrusions 318 are arranged in an annular array on the inner top wall of the accommodating groove 317, and the plurality of protrusions 318 can be inserted between the plurality of protrusions 318.

[0054] During the process of cleaning the pile hole, the mud in the pile hole can enter the drain pipe 10 through the docking pipe 311 to drain the mud in the pile hole.

[0055] The hinge seat 315 is mounted on the outer side of the docking pipe 311, the plurality of limiting strips 316 are arranged in an annular array on the outer side of the docking pipe 311 and located at the bottom of the hinge seat 315, and the limiting strips 316 are slidingly connected to the guide assembly 33.

[0056] As shown in Figure 3 and Figure 5 , the connecting assembly 32 comprises a rotating ring 321, a plurality of mounting blocks 322, and a plurality of connecting rods 323. The rotating ring 321 is rotatably connected to the bottom end of the outer side of the drain pipe 10, and the docking pipe 311 is located on the inner side of the rotating ring 321. The plurality of mounting blocks 322 are arranged in an annular array on the outer side of the rotating ring 321, and the plurality of connecting rods 323 are arranged in an annular array on the outer side of the rotating ring 321. The top ends of the plurality of connecting rods 323 are respectively mounted on the bottom ends of the plurality of mounting blocks 322, and the bottom ends of the plurality of connecting rods 323 are mounted on the guide assembly 33. The gear 24 is mounted on the outer side of the plurality of connecting rods 323, and the plurality of connecting rods 323 are spaced apart from the plurality of hinge seats 315.

[0057] When the motor 22 drives the gear 24 to rotate through the gear 23, the gear 24 can drive the guide assembly 33 to rotate through the connecting rod 323, and at this time, the guide assembly 33 can drive the docking pipe 311 to rotate through the limiting strip 316. When the docking pipe 311 rotates, the collecting mechanism 40 can be driven to rotate through the hinge seat 315 on the mounting ring 314.

[0058] With reference back to Figure 3 and Figure 5 As shown in

[0059] When the gear two 24 drives the connecting rod 323 to rotate, the connecting rod 323 drives the sliding sleeve 331 to rotate through the connecting block 332, and the sliding sleeve 331 can drive the butt joint pipe 311 to rotate through the limiting strip 316.

[0060] As shown in Figures 1 to 2 and Figure 5 The collection mechanism 40 includes a collection assembly 41, a hinged arm 42 and a connecting belt 43. The number of the collection assembly 41, the hinged arm 42 and the connecting belt 43 is multiple, and the two ends of the hinged arm 42 are respectively hinged to the collection assembly 41 and the hinged seat one 315. The collection assembly 41 is in sliding connection with the guide rod 334, and the multiple connecting belts 43 are installed between the multiple collection assemblies 41.

[0061] When the butt joint pipe 311 moves up, the butt joint pipe 311 pushes the hinged arm 42 to move through the hinged seat one 315 on the mounting ring 314, and at the same time, the hinged arm 42 pushes the collection assembly 41 to slide on the guide rod 334, so that the multiple collection assemblies 41 gradually move away from the butt joint pipe 311 and are attached to the inner wall of the pile hole. When the collection assembly 41 is attached to the inner wall of the pile hole, the soil scratched by the reinforcement cage can fall into the collection assembly 41 to prevent the soil from entering the bottom of the pile hole. In the process of attaching the collection assembly 41 to the inner wall of the pile hole, the connecting belt 43 is gradually stretched and attached to the inner wall of the pile hole to prevent the soil from entering the pile hole from the gap between the two collection assemblies 41.

[0062] As shown in 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 plate 413 and a bottom plate 414. The movable plate 411 is arc-shaped, and both ends of the movable plate 411 are connected with the connecting belt 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 with the second hinge seat 412. The baffle plate 413 is installed on the inner side of the bottom of the movable plate 411 and is located at the bottom of the limiting plate 333, and the bottom plate 414 is installed on the bottom of the movable plate 411. The baffle plate 413 and the bottom plate 414 are both fan-shaped, and the baffle plate 413 is located at the top of the abutting surface of the two bottom plates 414.

[0063] A sliding hole 415 for the guide rod 334 to slide is formed on one side of the bottom plate 414, and the bottom plate 414 can be supported through the guide rod 334. A sliding groove 416 is formed on the bottom of the bottom plate 414.

[0064] When the hinge arm 42 pushes the movable plate 411 to move towards the inner wall of the pile hole, the bottom plate 414 slides on the guide rod 334, at this time, the connecting belt 43 between the two movable plates 411 is stretched, and at the same time, the baffle plate 413 on the movable plate 411 can cover the gap between the two bottom plates 414 after moving away, so as to prevent the soil scraped off by the reinforcement cage from passing through the gap between the two bottom plates 414. When the movable plate 411 is attached to the inner wall of the pile hole, the soil scraped off by the reinforcement cage falls between the plurality of movable plates 411 to collect the soil.

[0065] As shown in Figures 1 to 2 and Figure 6 , the extrusion mechanism 50 includes a plug-in assembly 51, an extrusion assembly 52 and a plug plate 53. The plug-in assembly 51 is slidingly arranged in the inner part of the butt joint pipe 311, and the extrusion assembly 52 is installed on the bottom end of the outer side of the plug-in assembly 51. The plug plate 53 is arc-shaped, and a plurality of plug plates 53 are annularly arranged on the bottom end of the extrusion assembly 52.

[0066] When the extrusion assembly 52 enters the pile hole, the drainage pipe 10 drives the butt joint pipe 311 to move downward through the telescopic piece 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 to move upward, and in the process of moving upward, the butt joint pipe 311 can be pushed to move upward in the drainage pipe 10, and at this time, the telescopic piece 313 is compressed. In the process of moving upward, the mounting ring 314 pushes the hinge arm 42 to move through the first hinge seat 315, and 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 belt 43 between the two movable plates 411 is stretched, and when the movable plate 411 is attached to the inner wall of the pile hole, the soil scraped off by the reinforcement cage can fall into the movable plate 411 to prevent the soil from entering the bottom of the pile hole.

[0067] As shown in Figure 2 ,Figure 6 and Figure 9 As shown in

[0068] When the extrusion assembly 52 is pushed by the mud in the pile hole, the extrusion assembly 52 drives the connecting barrel 511 to move upward in the accommodating groove 317 of the docking pipe 311, so that the plug blocks 512 are inserted into the gaps between the plurality of protrusions 318. With the continuous upward movement of the extrusion assembly 52, the plug blocks 512 can push the docking pipe 311 to move upward, so that the movable plate 411 is in contact with the inner wall of the pile hole. When the plug blocks 512 are inserted into the gaps between the plurality of protrusions 318, the motor 22 drives the gear two 24 to rotate through the gear one 23, and the gear two 24 can drive the sliding sleeve 331 to rotate through the connecting rod 323. At this time, the sliding sleeve 331 can drive the docking pipe 311 to rotate through the limiting strip 316. When the docking pipe 311 rotates, the movable plate 411 can be driven to rotate through the hinged seat one 315 on the mounting ring 314, so as to tamp the inner wall of the pile hole. In addition, the docking pipe 311 can drive the connecting barrel 511 to rotate through the protrusions 318, so as to drive the extrusion assembly 52 to rotate in the pile hole.

[0069] As shown in Figure 2 , Figure 6 and Figures 8 to 10 The extrusion assembly 52 includes a pressing plate 521 and a plurality of sealing members. The pressing plate 521 is mounted on the bottom end of the connecting barrel 511, and the bottom end of the connecting barrel 511 is located at the same horizontal plane as the bottom end of the pressing plate 521. The plurality of sealing members are arranged in an annular array on the top end of the pressing plate 521. The bottom end of the pressing plate 521 is provided with a limiting groove 526 for the sliding of the sealing members.

[0070] The sealing member comprises a sealing plate 522, a sliding plate 523, a limiting block 524 and a stopper 525. The sealing plate 522 is slidingly connected to the top end of the pressing plate 521 and located at the top of the limiting groove 526 to seal the limiting groove 526 and prevent the mud from entering between the pressing plate 521 and the bottom plate 414. The sliding plate 523 is installed on the top of the sealing plate 522. The limiting block 524 is installed on the top of the sliding plate 523 and slidingly connected with the sliding groove 416 at the bottom of the bottom plate 414. The bottom of the sliding plate 523 penetrates the sealing plate 522 and the limiting groove 526 in sequence and extends to the outside of the limiting groove 526. The stopper 525 is installed on the bottom of the sliding plate 523.

[0071] The limiting groove 526 is arc-shaped and has two sections, one of which has a larger width than the other. In the initial state, the sliding plate 523 is located in the section of the limiting groove 526 with a smaller width, and the other section of the limiting groove 526 allows the stopper 525 to pass through, so that the sealing member is separated from the pressing plate 521.

[0072] When the plug 512 is inserted into the gap between the plurality of protrusions 318, the motor 22 drives the gear two 24 to rotate through the gear one 23, and the gear two 24 drives the sliding sleeve 331 to rotate through the connecting rod 323. At this time, the sliding sleeve 331 can drive the butt joint pipe 311 to rotate through the limiting strip 316. When the butt joint pipe 311 rotates, it can drive the movable plate 411 and the pressing plate 521 to rotate synchronously. When the pressing plate 521 contacts the inner bottom wall of the pile hole, the plug plate 53 is inserted into the pile hole to limit the rotation of the pressing plate 521. At this time, with the continuous rotation of the butt joint pipe 311, the bottom plate 414 drives the sliding plate 523 into the wider section of the limiting groove 526 through the limiting block 524. When the drain pipe 10 moves upward, the bottom plate 414 can drive the stopper 525 to pass through the limiting groove 526 through the sliding plate 523 on the limiting block 524. At this time, the connecting barrel 511 is separated from the butt joint pipe 311, so as to leave the pressing plate 521 at the bottom of the pile hole and place the bottom end of the reinforcement cage on the top end of the pressing plate 521, so that the reinforcement cage is placed more stably.

[0073] Working principle: when the pile hole is cleaned, the reinforcement cage is placed above the movable plate 411, and then the reinforcement cage and the cleaning device are lowered into the pile hole. When the pressing plate 521 contacts the mud in the pile hole, it can move upward under the counter thrust of the mud. In the process of moving upward, the pressing plate 521 drives the connecting barrel 511 to move upward in the accommodating groove 317 of the butt joint pipe 311, so that the plug 512 is inserted into the gap between the plurality of protrusions 318.

[0074] With the continuous downward movement of the drainage pipe 10, the butt joint pipe 311 is continuously moved downward by the telescopic piece 313 on the rotating ring 321. At this time, the mud in the pile hole can push the pressing plate 521 to continue to move upward, so as to push the butt joint pipe 311 to move upward in the drainage pipe 10. In the process of upward movement of the butt joint pipe 311, the mounting ring 314 pushes the hinged arm 42 to move through the hinged seat one 315, the hinged arm 42 pushes the movable plate 411 to move towards the inner wall of the pile hole, at this time, the connecting belt 43 between the two movable plates 411 is stretched. When the movable plate 411 is attached to the inner wall of the pile hole, the soil scraped by the reinforcement cage can fall into the movable plate 411 to prevent the soil from entering the bottom of the pile hole, at the same time, the pressing plate 521 is in contact with the bottom of the bottom plate 414.

[0075] When the plug 512 is inserted into the gap between the plurality of protrusions 318, the motor 22 drives the gear two 24 to rotate through the gear one 23, the gear two 24 can drive the sliding sleeve 331 to rotate through the connecting rod 323. At this time, the sliding sleeve 331 can drive the butt joint pipe 311 to rotate through the limiting strip 316. When the butt joint pipe 311 rotates, the movable plate 411 in contact with the inner wall of the pile hole can tamp the inner wall of the pile hole to reduce the falling of the soil in the pile hole through the hinged seat one 315 on the mounting ring 314. At the same time, the connecting cylinder 511 is driven to rotate by the protrusion 318, so that the pressing plate 521 rotates in the pile hole.

[0076] When the pressing 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 sequentially discharged through the connecting pipe 513, the butt joint pipe 311 and the drainage pipe 10, so as to clean the mud in the pile hole.

[0077] In the process of downward movement of the device, when the reinforcement cage is scraped with the inner wall of the pile hole, the falling soil can enter the inner side of the movable plate 411 to collect the falling soil. When the pressing plate 521 is in contact with the inner bottom wall of the pile hole, the plug plate 53 is inserted into the pile hole to limit the rotation of the pressing plate 521. With the continuous rotation of the butt joint pipe 311, the sliding plate 523 is driven by the limiting block 524 to enter the wider section of the limiting groove 526.

[0078] When the drain pipe 10 moves up, the bottom plate 414 can drive the stop block 525 to pass through the limiting groove 526 through the sliding plate 523 on the limiting block 524, at this time, the connecting barrel 511 is separated from the butt joint pipe 311, so as to leave the pressing plate 521 at the bottom of the pile hole and place the bottom end of the reinforcement cage on the top end of the pressing plate 521, so that the reinforcement cage is placed more stably. In the process of moving up of the drain pipe 10, the movable plate 411 is reset, at this time, the butt joint pipe 311 drives the movable plate 411 to move up, and the collected soil is moved out of the pile hole, so that the mud and the soil scratched by the reinforcement cage can be cleaned at one time, and the pile hole does not need to be cleaned for many times, so that the cleaning time of the pile hole is saved, and the cleaning efficiency of the pile hole is improved.

[0079] As shown in Figures 1 to 10 The pile hole cleaning method for pile construction of the present application is carried out by using the pile hole cleaning device for pile construction, and comprises the following steps:

[0080] S1: placing the reinforcement cage above the movable plate 411, and then lowering the reinforcement cage and the cleaning device into the pile hole;

[0081] S2: the drain pipe 10 drives the butt joint pipe 311 to move down, so that the pressing plate 521 is pushed up by the mud in the pile hole, at this time, the plug block 512 on the connecting barrel 511 is inserted between the plurality of convex blocks 318, at this time, the mud in the pile hole is pumped out by the mud pump;

[0082] S3: the drain pipe 10 continues to move down, under the reaction force of the mud in the pile hole, the plug block 512 on the connecting barrel 511 pushes the butt joint pipe 311 to move up in the drain pipe 10, so that the plurality of movable plates 411 are attached to the inner wall of the pile hole;

[0083] S4: the motor 22 drives the gear two 24 to rotate through the gear one 23, the gear two 24 drives the sliding sleeve 331 to rotate through the connecting rod 323, at this time, the sliding sleeve 331 drives the butt joint pipe 311 to rotate through the limiting strip 316, the butt joint pipe 311 drives the movable plate 411 to rotate, and the inner wall of the pile hole is rammed, and the soil scratched off by the reinforcement cage falls into the inner side of the movable plate 411 in the process of moving down, so as to collect the falling soil;

[0084] S5: when the plug plate 53 is inserted into the inner bottom wall of the pile hole, the sliding plate 523 enters the wider section of the limiting groove 526 with the continuous rotation of the butt joint pipe 311;

[0085] S6: When the drain pipe 10 moves upward, the movable plate 411 resets, the bottom plate 414 drives the stop block 525 to pass through the limiting groove 526, so that the connecting barrel 511 is separated from the butt joint pipe 311, so as to leave the pressing plate 521 at the bottom of the pile foundation hole and place the bottom end of the reinforcement cage on the top end of the pressing plate 521, at the same time, the butt joint pipe 311 drives the movable plate 411 to move upward, so as to move the collected soil out of the pile foundation hole.

[0086] Although the embodiments of the present application have been shown and described above, it should be understood by those skilled in the art that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present application.

Claims

1. A pile foundation hole cleaning device for pile foundation construction, comprising a drain pipe and a drive mechanism, characterized in that, The bottom end of the drain pipe is equipped with a rotating mechanism, a collection mechanism is hinged to 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 pipe that is elastically slidably connected to the inside of the connecting assembly, a receiving groove opened in the lower part of the connecting pipe, multiple protrusions installed on the top wall of the receiving groove, a mounting plate located below the drain pipe and installed on the outside of the connecting pipe, a hinge, multiple telescopic members distributed in a ring array on the mounting plate, and multiple limiting strips installed in a ring array on the outside of the connecting pipe and slidably connected to the guide assembly. The squeezing mechanism can be inserted between the multiple protrusions. The hinge is installed on the outside of the bottom end of the connecting pipe and located on the top of the limiting strips. The two ends of the telescopic members are respectively installed on the connecting assembly and the mounting plate. 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 disposed 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. The hinge includes a mounting ring mounted on the outside of the connecting tube and a plurality of hinge seats mounted in a ring array on the outside of the mounting ring, with the movable plate hinged to the hinge seats. The connecting assembly includes a rotating ring rotatably connected to the drain pipe, multiple 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. The guide assembly includes a sliding sleeve slidably connected to the outside of the bottom end of the connecting tube, multiple connecting blocks installed on the outside of the top end of the sliding sleeve, and multiple guide rods installed on the outside of the bottom end of the sliding sleeve. Multiple slots that are slidably connected to the limiting strip are opened on the inner side of the sliding sleeve. The bottom end of the connecting rod is installed on the connecting block, and the guide rod is slidably connected to the base plate.

2. The pile foundation hole cleaning device for pile foundation construction according to claim 1, characterized in that, The extrusion mechanism includes a plug-in assembly, an extrusion assembly, and multiple 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 multiple insert plates are arranged in a circular array at the bottom end of the extrusion assembly.

3. The pile foundation hole cleaning device for pile foundation construction according to claim 2, characterized in that, The plug-in assembly includes a connecting cylinder, a connecting tube, and multiple 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 multiple 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 gaps between the multiple protrusions.

4. The pile foundation hole cleaning device for pile foundation construction according to claim 3, characterized in that, 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 on the same horizontal plane. The multiple seals are arranged 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 is wider than the other.

5. The pile foundation hole cleaning device for pile foundation construction according to claim 4, characterized in that, 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.

6. A method for cleaning pile foundation holes during pile foundation construction, characterized in that, The pile foundation hole cleaning device for pile foundation construction as described in claim 5 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.

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