A bored pile hole cleaning device and construction method

Abstract

The application discloses a bored pile hole cleaning device and a construction method, and belongs to the field of foundation construction. The device comprises a mud pump, a cleaning pipeline connected with the mud pump, a connecting ring fixedly arranged on the cleaning pipeline, an installation ring fixedly connected to the connecting ring, a first rotating ring rotatably arranged on the connecting ring, a plurality of arc-shaped plates arranged on the first rotating ring, a driving assembly arranged on the first rotating ring and used for driving the arc-shaped plates to move, and a rotating assembly arranged in the installation ring and used for driving the first rotating ring to rotate. The application has the effect of improving the pile forming quality of the bored pile.

Description

Technical Field

[0001] This application relates to the field of foundation construction, and in particular to a borehole cleaning device and construction method for bored piles. Background Technology

[0002] Drilled cast-in-place piles refer to piles formed by drilling holes in the foundation using mechanical equipment on the construction site, then placing a steel cage into the holes using hoisting equipment and pouring concrete into them.

[0003] In the construction of bored piles, hole cleaning is a crucial step, and its quality directly affects the quality of the pile. The conventional method for hole cleaning involves rotating the drill bit after drilling to flip the drill cuttings at the bottom of the hole, then injecting mud into the hole until the mud with the most suspended drill cuttings is removed.

[0004] Regarding the aforementioned technologies, the inventors believe that after cleaning the existing cast-in-place pile hole, some mud slurry blocks tend to adhere to the inner wall of the hole. When the operator hoists the reinforcing cage into the hole, the reinforcing cage can cause larger mud slurry blocks to fall to the bottom of the hole, thus affecting the quality of the cast-in-place pile. Summary of the Invention

[0005] In order to improve the quality of cast-in-place piles, this application provides a hole cleaning device and construction method for bored cast-in-place piles.

[0006] The borehole cleaning device for bored piles provided in this application adopts the following technical solution:

[0007] A borehole cleaning device for bored piles includes a mud pump, a cleaning pipe connected to the mud pump, and a connecting ring fixedly sleeved on the cleaning pipe. An installation ring is fixedly connected to the connecting ring, and a first rotating ring is rotatably mounted on the connecting ring. The first rotating ring is provided with a plurality of arc-shaped plates, and a driving component for driving the arc-shaped plates to move is provided on the first rotating ring. A rotating component for driving the first rotating ring to rotate is provided inside the installation ring.

[0008] By adopting the above technical solution, the operator inserts the cleaning pipe into the grouting pile hole. The operator moves the arc plate using the drive component, and the outer circumference of the arc plate abuts against the inner wall of the grouting pile hole. Then, the operator resets the arc plate using the drive component. Next, the operator rotates the first rotating ring using the rotation component. The rotation of the first rotating ring drives the arc plate to rotate. Then, the operator uses the drive component to make the arc plate abut against the inner wall of the grouting pile hole. Finally, the soil on the inner wall of the grouting pile hole becomes smooth and firm, reducing the possibility of soil slippage on the inner wall of the grouting pile hole. When the cleaning pipe extends to the lowest point in the grouting pile hole, the operator starts the mud pump to remove larger mud blocks in the grouting pile hole, thereby improving the pile formation quality.

[0009] Preferably, the drive assembly includes a drive motor installed in the first rotating ring, a lead screw fixedly connected to the output shaft of the drive motor, and a drive rod passing through the first rotating ring. The first rotating ring has a slot for sliding cooperation with the drive rod. The lead screw passes through the drive rod and is threadedly engaged with the drive rod. The end of the drive rod away from the drive motor is fixedly connected to the arc-shaped plate.

[0010] By adopting the above technical solution, the operator starts the drive motor, the output shaft of the drive motor drives the lead screw to rotate, the rotation of the lead screw drives the drive rod to move, the setting of the strip groove helps to limit the rotation of the drive rod, the movement of the drive rod drives the arc plate to move, the setting of the arc plate helps to squeeze the inner wall of the grouting pile hole, thereby preventing large mud blocks from sliding off the inner wall of the grouting pile hole.

[0011] Preferably, the mounting ring has a first cavity, and the first rotating ring has a first annular groove on its side near the mounting ring. The rotating assembly includes a dual-head motor mounted on the inner wall of the first cavity, a connecting rod mounted on the output shaft of the dual-head motor, and a first rotating gear fixedly sleeved on the connecting rod. An internal gear ring for meshing with the first rotating gear is fixedly connected to the inner wall of the first annular groove.

[0012] By adopting the above technical solution, the operator starts the dual-head motor. The output shaft of the dual-head motor rotates, which drives the connecting rod to rotate. The rotation of the connecting rod drives the first rotating gear to rotate. The first rotating gear drives the internal gear ring to rotate. The internal gear ring drives the first rotating ring to rotate. This makes it convenient for the operator to control the position of the arc plate and ensures that all positions on the inner wall of the grouting pile hole are squeezed by the arc plate.

[0013] Preferably, a water-dividing ring is fixedly sleeved on the connecting ring, and a water supply pipe for supplying clean water is connected to the water-dividing ring. The water-dividing ring has a first channel for communicating with the water supply pipe. A support ring is fixedly connected to the water-dividing ring, and a spray ring is fixedly connected to the support ring. A spray groove is formed inside the spray ring, and multiple spray holes are formed on the inner bottom surface of the spray groove. A second channel for communicating with the first channel is formed inside the water-dividing ring. A third channel is provided inside the support ring. One end of the third channel is connected to the second channel, and the other end of the third channel is connected to the spray groove. An opening and closing component for opening and closing the second channel is provided inside the water-dividing ring.

[0014] By adopting the above technical solution, when the operator opens the second channel through the opening and closing component, external clean water enters the first channel through the water supply pipe. The clean water in the first channel passes through the second channel, the third channel and the water spray tank in sequence, and finally the clean water is sprayed out through the water spray hole. The clean water sprayed out of the water spray hole impacts the arc plate, which helps to remove the mud adhering to the arc plate.

[0015] Preferably, the opening and closing assembly includes a sealing plate slidably disposed on the inner sidewall of the second channel, a positioning rod fixedly connected to the sealing plate, and a first spring sleeved on the positioning rod. The end of the positioning rod extending out of the water-dividing ring can abut against the arc-shaped plate. One end of the first spring is fixedly connected to the positioning rod, and the other end of the first spring is fixedly connected to the outer peripheral surface of the water-dividing ring.

[0016] By adopting the above technical solution, when the operator moves the arc plate away from the first rotating ring by driving the component, the positioning rod drives the sealing plate to move under the action of the first spring. The sealing plate moves into the second channel and closes the second channel. When the operator moves the arc plate closer to the first rotating ring by driving the component, the arc plate abuts against the positioning rod. The arc plate pushes the positioning rod to move until the positioning rod pushes the sealing plate from the second channel into the first channel, which facilitates cleaning the arc plate with clean water.

[0017] Preferably, a first annular flange is fixedly connected to the first rotating ring, and a first receiving groove for accommodating the first annular flange is provided in the mounting ring. A first fixing component is provided in the mounting ring. The first fixing component includes a mounting sleeve fixedly connected to the dual-head motor, an abutment rod passing through the mounting sleeve, and a second spring fixedly connected to the abutment rod. The end of the second spring away from the abutment rod is fixedly connected to the inner end face of the mounting sleeve. A first electric push rod is fixedly connected to the inner sidewall of the first cavity, and the piston rod of the first electric push rod is fixedly connected to the dual-head motor.

[0018] By adopting the above technical solution, the setting of the first electric push rod makes it convenient for the operator to adjust the position of the dual-head motor. When the operator adjusts the position of the dual-head motor so that the first rotating gear disengages from the meshing state with the internal gear ring, the dual-head motor drives the mounting sleeve to move. The mounting sleeve cooperates with the second spring to make the abutment rod press against the first annular flange, thereby fixing the position of the first rotating ring.

[0019] Preferably, a second rotating ring is sleeved on the connecting ring, and the second rotating ring is rotatably engaged with the side of the mounting ring away from the first rotating ring. A second electric push rod is provided inside the second rotating ring, and a connecting column is fixedly connected to the piston rod of the second electric push rod. A scraper for cleaning the inner wall of the grouting pile hole is fixedly connected to the connecting column, and the scraper is slidably engaged with the outer peripheral surface of the arc-shaped plate. A rotating assembly for driving the second rotating ring to rotate is provided inside the mounting ring.

[0020] By adopting the above technical solution, the operator uses the second electric push rod to control the position of the connecting column and the scraper. When the arc plate is closest to the first rotating ring, the operator moves the scraper away from the second rotating ring. The adjacent arc plates cooperate to clean the scraper. When the scraper is between the arc plate and the inner wall of the grouting pile hole, the operator uses the rotating component to drive the second rotating ring to rotate. The second rotation drives the second electric push rod, the connecting column and the scraper to rotate. The scraper can clean the outer circumference of the arc plate and further scrape the inner wall of the grouting pile hole.

[0021] Preferably, the second rotating ring has a second annular groove on its side near the mounting ring, and the rotating assembly includes an outer gear ring fixedly sleeved on the inner wall of the second annular groove and a second rotating gear fixedly sleeved on the output shaft of the dual-head motor on the side away from the first rotating ring, the second rotating gear meshing with the outer gear ring.

[0022] By adopting the above technical solution, the operator drives the dual-head motor to move by the first electric push rod until the second rotating gear meshes with the outer gear ring. At this time, the operator starts the dual-head motor. The output rotation of the dual-head motor drives the second rotating gear to rotate. The second rotating gear drives the outer gear ring to rotate. The rotation of the outer gear ring drives the second rotating ring to rotate, which finally makes the scraper rotate.

[0023] Preferably, a second annular flange is fixedly connected to the second rotating ring, and a second receiving groove for accommodating the second annular flange is provided in the mounting ring. A guide groove is provided on the inner sidewall of the second receiving groove. A second fixing component is provided in the mounting ring. The second fixing component includes a clamping rod slidably disposed on the inner sidewall of the guide groove, a third spring fixedly connected to the clamping rod, and a metal wire fixedly connected to the clamping rod. The end of the third spring away from the clamping rod is fixedly connected to the inner end face of the guide groove. A rotating roller is installed on the inner sidewall of the first cavity near the first electric push rod. The end of the metal wire away from the clamping rod passes around the rotating roller and is fixedly connected to the dual-head motor.

[0024] By adopting the above technical solution, when the second rotating gear is not engaged with the outer gear ring, the clamping rod presses against the second annular flange under the elastic force of the third spring, thereby fixing the position of the second rotating ring. When the second rotating gear is engaged with the outer gear ring, the dual-head motor pulls the metal wire, and the metal wire drives the clamping rod to move, thereby causing the clamping rod to disengage from the contact state with the second annular flange, thereby releasing the locking state of the second rotating ring.

[0025] The present application provides a method for cleaning boreholes in bored piles, which employs the following technical solution:

[0026] A method for cleaning boreholes in bored piles includes the following steps:

[0027] S1. Use hoisting equipment to place the cleaning pipe into the grouting pile hole, and ensure that the axis of the cleaning pipe coincides with the axis of the grouting pile hole.

[0028] S2. The arc-shaped plate is moved by the cooperation of the drive component and the rotating component, thereby flattening the inner wall of the cast-in-place pile.

[0029] S3. By cooperating with the arc plate and the opening and closing components, clean the arc plate with water to prevent mud blocks from sticking to the arc plate.

[0030] S4. The scraper is moved by the cooperation of the second electric push rod and the rotating component, which cleans the arc plate on the one hand and further scrapes the inner wall of the grouting pile hole on the other hand.

[0031] S5. When the cleaning pipe extends to the bottom of the cast-in-place pile hole, start the mud pump and clean the mud from the bottom of the cast-in-place pile hole through the cleaning pipe, thereby improving the quality of the cast-in-place pile.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. The drive assembly moves the arc-shaped plate, and the outer circumference of the arc-shaped plate abuts against the inner wall of the grouting pile hole. Then, the drive assembly resets the arc-shaped plate. The operator then rotates the first rotating ring by rotating the assembly. The rotation of the first rotating ring drives the arc-shaped plate to rotate. Then, the operator drives the drive assembly to make the arc-shaped plate abut against the inner wall of the grouting pile hole. Finally, the soil on the inner wall of the grouting pile hole is made smooth and firm, reducing the possibility of soil slippage on the inner wall of the grouting pile hole. When the cleaning pipe extends to the lowest end of the grouting pile hole, the operator starts the mud pump to remove larger mud blocks in the grouting pile hole, thereby improving the pile formation quality.

[0034] 2. When the second channel is opened by the opening and closing component, external clean water enters the first channel through the water supply pipe. The clean water in the first channel passes through the second channel, the third channel and the water spray tank in sequence. Finally, the clean water is sprayed out through the water spray hole. The clean water sprayed out of the water spray hole impacts the arc plate, which helps to remove the mud adhering to the arc plate.

[0035] 3. The position of the connecting column and the scraper is controlled by the second electric push rod. When the arc plate is closest to the first rotating ring, the operator moves the scraper away from the second rotating ring. The adjacent arc plates cooperate to clean the scraper. When the scraper is between the arc plate and the inner wall of the grouting pile hole, the operator uses the rotating component to drive the second rotating ring to rotate. The second rotation drives the second electric push rod, the connecting column and the scraper to rotate. The scraper can clean the outer circumference of the arc plate and further scrape the inner wall of the grouting pile hole. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the borehole cleaning device for bored piles according to an embodiment of this application.

[0037] Figure 2 This is a schematic diagram of the internal structure of the borehole cleaning device for bored piles according to an embodiment of this application.

[0038] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0039] Figure 4 This is a schematic diagram of the internal structure of the mounting ring according to an embodiment of this application.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Cleaning pipe; 11. Cleaning pipe; 12. Ventilation pipe; 121. One-way exhaust pipe; 13. Mud pump; 14. Connecting ring; 15. First rotating ring; 151. First annular flange; 16. Arc plate; 17. Second rotating ring; 18. Second electric push rod; 181. Connecting column; 19. Scraper; 2. Mounting ring; 21. First receiving groove; 22. First arc groove; 23. Internal gear ring; 24. First cavity; 25. First electric push rod; 3. Rotating assembly; 31. Dual-head motor; 32. Connecting rod; 33. First rotating gear; 4. First fixing assembly; 41. Mounting sleeve; 42. Abutment rod; 43. Second spring; 5. Drive Components; 51. Drive motor; 52. Lead screw; 53. Drive rod; 54. Strip groove; 6. Water distribution ring; 61. First channel; 62. Water supply pipe; 63. Second channel; 64. Support ring; 65. Spray ring; 66. Spray groove; 67. Spray hole; 68. Third channel; 7. Opening and closing assembly; 71. Sealing plate; 72. Positioning rod; 73. First spring; 8. Rotating assembly; 81. External gear ring; 82. Second rotating gear; 83. Second annular groove; 84. Second annular flange; 85. Second receiving groove; 9. Second fixing assembly; 91. Pressing rod; 92. Third spring; 93. Metal wire; 94. Guide groove; 95. Rotating roller. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0043] This application discloses a borehole cleaning device for bored piles. (Refer to...) Figure 1 , Figure 2 The borehole cleaning device for bored piles includes a mud pump 13, a cleaning pipe 1 installed in the borehole of the bored pile, and a connecting ring 14.

[0044] Reference Figure 1 , Figure 2 The cleaning pipe 1 is arranged vertically and includes a cleaning pipe 11 and a ventilation pipe 12 sleeved outside the cleaning pipe 11. The end of the cleaning pipe 11 located outside the pile hole is connected to the mud pump 13, and the cleaning pipe 11 is fixedly connected to the ventilation pipe 12. The end of the ventilation pipe 12 located outside the pile hole is connected to a high-pressure air source, and a one-way exhaust pipe 121 is installed on the end of the ventilation pipe 12 located inside the pile hole. A connecting ring 14 is sleeved on the end of the ventilation pipe 12 located inside the pile hole, and the connecting ring 14 is fixedly connected to the outer circumferential surface of the ventilation pipe 12.

[0045] Reference Figure 2 , Figure 3A mounting ring 2 is fitted onto the connecting ring 14, and the mounting ring 2 is fixedly connected to the connecting ring 14. A first rotating ring 15 is rotatably mounted on the connecting ring 14, located on the upper surface of the mounting ring 2, and the first rotating ring 15 is in sliding engagement with the mounting ring 2. A first annular flange 151 is fixedly connected to the bottom surface of the first rotating ring 15, and a first receiving groove 21 is formed on the upper surface of the mounting ring 2. The first annular flange 151 is located in the first receiving groove 21, and the first annular flange 151 is in sliding engagement with the inner side wall of the first receiving groove 21. A first arc-shaped groove 22 is formed on the side of the first rotating ring 15 near the mounting ring 2, and an internal gear ring 23 is fixedly connected to the inner side wall of the first annular groove away from the cleaning pipe 1.

[0046] Reference Figure 2 , Figure 3 The mounting ring 2 is equipped with a rotating assembly 3, which includes a dual-head motor 31, a connecting rod 32, and a first rotating gear 33. A first cavity 24 is formed on the mounting ring 2, communicating with both the upper and bottom surfaces of the mounting ring 2. A first electric push rod 25 is embedded in the inner wall of the first cavity 24 away from the cleaning channel, and the dual-head motor 31 is mounted on the piston rod of the first electric push rod 25. Two connecting rods 32 are provided, each corresponding to one of the two output shafts of the dual-head motor 31, and the connecting rods 32 are coaxially and fixedly connected to the output shafts of the dual-head motor 31. The first rotating gear 33 is sleeved on the connecting rod 32 near the first rotating ring 15, and the first rotating gear 33 is fixedly connected to the connecting rod 32, meshing with the internal gear ring 23.

[0047] Reference Figure 3 , Figure 4 A first fixing component 4 is provided inside the mounting ring 2. The first fixing component 4 includes a mounting sleeve 41, an abutment rod 42, and a second spring 43. The mounting sleeve 41 is horizontally disposed in the first cavity 24, and one end of the mounting sleeve 41 is fixedly connected to the end of the dual-head motor 31 away from the first electric push rod 25. The abutment rod 42 passes through the end of the mounting sleeve 41 away from the dual-head motor 31, and the end of the abutment rod 42 extends into the first receiving groove 21, and abuts against the first annular flange 151. The second spring 43 is located inside the mounting sleeve 41, one end of the second spring 43 is fixedly connected to the abutment rod 42, and the other end of the second spring 43 is fixedly connected to the inner end face of the mounting sleeve 41. Under the action of the second spring 43, the abutment rod 42 presses against the first annular flange 151. The cooperation between the abutment rod 42 and the first annular flange 151 facilitates the operator to fix the first rotating ring 15.

[0048] The operator uses the first electric push rod 25 to drive the dual-head motor 31 to move until the first rotating gear 33 meshes with the internal gear ring 23. The dual-head motor 31 then drives the mounting sleeve 41 to move. The mounting sleeve 41, via the second spring 43, drives the abutment rod 42 to move, thereby releasing the locking state of the first rotating ring 15. The operator then starts the dual-head motor 31. The output shaft of the dual-head motor 31 rotates, causing the connecting rod 32 to rotate. The rotation of the connecting rod 32 causes the first rotating gear 33 to rotate, which in turn causes the internal gear ring 23 to rotate, ultimately driving the first rotating ring 15 to rotate.

[0049] Reference Figure 2 An arc-shaped plate 16 is provided on the first rotating ring 15, and the outer circumferential surface of the arc-shaped plate 16 can fit against the inner side of the grouting pile hole. Four arc-shaped plates 16 are provided, and the four arc-shaped plates 16 are evenly arranged around the axis of the first rotating ring 15. A drive assembly 5 for driving the movement of the arc-shaped plates 16 is provided on the first rotating ring 15, and four drive assemblies 5 are provided, each corresponding to one of the four arc-shaped plates 16. A single drive assembly 5 includes a drive motor 51, a lead screw 52, ​​and a drive rod 53. A strip groove 54 is formed inside the first rotating ring 15, and the length direction of the strip groove 54 is consistent with the diameter direction of the first rotating ring 15. The drive motor 51 is mounted on the inner end face of the strip groove 54, and the lead screw 52 is coaxially fixedly connected to the output shaft of the drive motor 51, and the length direction of the lead screw 52 is consistent with the length direction of the strip groove 54. One end of the drive rod 53 is located inside the strip groove 54, and the other end of the drive rod 53 is fixedly connected to the arc plate 16. The drive rod 53 slides against the inner wall of the strip groove 54, and the end of the lead screw 52 away from the drive motor 51 passes into the drive rod 53. The lead screw 52 and the drive rod 53 are threaded together.

[0050] The operator starts the drive motor 51, which drives the lead screw 52 to rotate. The lead screw 52 drives the drive rod 53 to move, and the drive rod 53 drives the arc plate 16 to move until the outer circumference of the arc plate 16 presses against the inner wall of the grouting pile hole, thereby reducing the possibility of mud blocks sliding off the inner wall of the grouting pile hole.

[0051] Reference Figure 2A water-dividing ring 6 is provided on the upper surface of the first rotating ring 15. The water-dividing ring 6 is fixedly sleeved on the connecting ring 14, and the water-dividing ring 6 slides in conjunction with the first rotating ring 15. A first channel 61 is formed inside the water-dividing ring 6. The first channel 61 is circular and coincides with the axis of the cleaning channel. A water supply pipe 62 is installed on the water-dividing ring 6. One end of the water supply pipe 62 is connected to an external water source, and the other end of the water supply pipe 62 is connected to the first channel 61. A second channel 63 is formed inside the water-dividing ring 6. The length direction of the second channel 63 is consistent with the length direction of the diameter of the water-dividing ring 6, and the second channel 63 is connected to the first channel 61. Four second channels 63 are provided, and the four second channels 63 are evenly arranged around the axis of the water-dividing ring 6.

[0052] Reference Figure 2 A support ring 64 is fixedly connected to the upper surface of the water-dividing ring 6, and the axis of the support ring 64 coincides with the axis of the water-dividing ring 6. A spray ring 65 is fixedly connected to the end of the support ring 64 away from the water-dividing ring 6. A spray groove 66 is formed inside the spray ring 65. The spray groove 66 is circular, and multiple spray holes 67 are formed on the inner bottom surface of the spray ring 65. Four third channels 68 are vertically formed inside the support ring 64. The four third channels 68 correspond one-to-one with the four second channels 63. One end of the third channel 68 is connected to the second channel 63, and the other end of the third channel 68 is connected to the spray groove 66.

[0053] Reference Figure 2 An opening and closing assembly 7 is provided inside the water-dividing ring 6. The opening and closing assembly 7 includes a sealing plate 71, a positioning rod 72, and a first spring 73. There are four opening and closing assemblies 7, each corresponding to one of the four second channels 63. The sealing plate 71 is located at the end of the second channel 63 near the first channel 61, and the sealing plate 71 slides in cooperation with the second channel 63. The positioning rod 72 passes through the outer circumferential surface of the water-dividing ring 6. One end of the positioning rod 72 is located inside the second channel 63 and is fixedly connected to the sealing plate 71, while the other end of the positioning rod 72 extends outside the water-dividing ring 6. The first spring 73 is sleeved on the end of the positioning rod 72 located outside the water-dividing ring 6. One end of the first spring 73 is fixedly connected to the positioning rod 72, and the other end of the first spring 73 is fixedly connected to the water-dividing ring 6.

[0054] Reference Figure 2 , Figure 3A second rotating ring 17 is fitted onto the connecting ring 14, and the connecting ring 14 and the second rotating ring 17 are rotatably engaged, with the upper surface of the second rotating ring 17 slidingly engaged with the bottom surface of the mounting ring 2. A rotating assembly 8 is provided on the mounting ring 2, including an external gear ring 81 and a second rotating gear 82. A second annular groove 83 is formed on the side of the second rotating ring 17 near the mounting ring 2, and the axis of the second annular groove 83 coincides with the axis of the mounting ring 2. The external gear ring 81 is fixedly connected to the inner wall of the second annular groove 83 near the cleaning channel, and the second rotating gear 82 is fitted onto the connecting rod 32 extending into the second arc-shaped groove, with the second rotating gear 82 meshing with the external gear ring 81.

[0055] Reference Figure 2 , Figure 3 A second annular flange 84 is fixedly connected to the side of the second rotating ring 17 near the mounting ring 2, and the axis of the second annular flange 84 coincides with the axis of the second rotating ring 17. A second receiving groove 85 is formed on the bottom surface of the mounting ring 2, and the second annular flange 84 is located in the second receiving groove 85, and the second annular flange 84 slides in engagement with the inner sidewall of the second receiving groove 85. A second fixing component 9 is provided inside the mounting ring 2, and the second fixing component 9 includes a clamping rod 91, a third spring 92, and a metal wire 93.

[0056] Reference Figure 3 , Figure 4 A guide groove 94 is provided on the inner wall of the second receiving groove 85 away from the cleaning pipe 1. The clamping rod 91 is located in the guide groove 94, and the clamping rod 91 slides and engages with the inner wall of the guide groove 94, and the clamping rod 91 abuts against the second annular flange 84. The third spring 92 is provided at the end of the clamping rod 91 away from the second annular flange 84. One end of the third spring 92 is fixedly connected to the clamping rod 91, and the other end of the third spring 92 is fixedly connected to the inner end face of the guide groove 94.

[0057] Reference Figure 4 A rotating roller 95 is installed on the inner wall of the first cavity 24 near the first electric push rod 25. One end of the metal wire 93 extends into the guide groove 94 and is fixedly connected to the end of the clamping rod 91 near the third spring 92. The other end of the metal wire 93 passes around the rotating roller 95 and is fixedly connected to the side of the double-headed motor 31 near the first electric push rod 25.

[0058] This application also discloses a method for cleaning the borehole of a bored pile. The method for cleaning the borehole of a bored pile includes the following steps:

[0059] S1. Use hoisting equipment to place the cleaning pipe 1 into the grouting pile hole, and ensure that the axis of the cleaning pipe 1 coincides with the axis of the grouting pile hole.

[0060] S2. Start the drive motor 51. The lead screw 52 and drive rod 53 work together to move the arc plate 16 until the arc plate 16 abuts against the inner wall of the grouting pile hole. The first electric push rod 25 makes the first rotating gear 33 mesh with the internal gear ring 23, releasing the lock of the first rotating ring 15. Start the double-head motor 31. The first rotating gear 33 and internal gear ring 23 work together to make the first rotating ring 15 and the arc plate 16 rotate. The drive assembly 5 and the rotating assembly 3 work together to move the arc plate 16, thereby flattening the inner wall of the grouting pile.

[0061] S3. When the arc plate 16 approaches the water distribution ring 6, the arc plate 16 pushes the positioning rod 72 and the sealing plate 71 to move, thereby opening the second channel 63. Clean water passes through the water supply pipe 62, the first channel 61, the second channel 63, the third channel 68, and the water spray trough 66 in sequence. The clean water is finally sprayed out through the water spray hole 67 onto the arc plate 16, thereby cleaning the arc plate 16 and preventing mud blocks from sticking to the arc plate 16.

[0062] S4 uses the second electric push rod 18 to bring the scraper 19 close to the inner wall of the grouting pile hole, and uses the first electric push rod 25 to make the second rotating gear 82 mesh with the outer gear ring 81, thereby releasing the lock of the second rotating ring 17, starting the double-head motor 31, and the cooperation between the second rotating gear 82 and the outer gear ring 81 causes the scraper 19 to rotate, cleaning the arc plate 16 on the one hand, and further scraping the inner wall of the grouting pile hole on the other hand.

[0063] S5. When the cleaning pipe 1 extends to the bottom surface of the cast-in-place pile hole, a high-pressure air source is first introduced into the ventilation pipe 12. The gas is discharged through the single exhaust pipe, causing the mud on the bottom surface of the cast-in-place pile hole to roll. Then, the mud pump 13 is started, and the mud on the bottom surface of the cast-in-place pile hole is cleaned out of the cast-in-place pile hole through the cleaning pipe 1, thereby improving the pile formation quality of the cast-in-place pile.

[0064] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A borehole cleaning device for bored piles, comprising a mud pump (13), characterized in that: It also includes a cleaning pipe (1) for communicating with the mud pump (13) and a connecting ring (14) fixedly sleeved on the cleaning pipe (1). An installation ring (2) is fixedly connected to the connecting ring (14). A first rotating ring (15) is rotatably installed on the connecting ring (14). A plurality of arc plates (16) are provided on the first rotating ring (15). A driving component (5) for driving the arc plates (16) to move is provided on the first rotating ring (15). A rotating component (3) for driving the first rotating ring (15) to rotate is provided inside the installation ring (2). A water distribution ring (6) is fixedly sleeved on the connecting ring (14). A water supply pipe (62) for supplying clean water is connected to the water distribution ring (6). The water distribution ring (6) has a first channel (61) for communicating with the water supply pipe (62). A support ring (64) is fixedly connected to the water distribution ring (6). A water spraying ring (65) is fixedly connected to the support ring (64). A water spraying groove (66) is opened inside the water spraying ring (65). The bottom surface is provided with multiple water spray holes (67), the water distribution ring (6) is provided with a second channel (63) for communicating with the first channel (61), the support ring (64) is provided with a third channel (68), one end of the third channel (68) is connected to the second channel (63), the other end of the third channel (68) is connected to the water spray groove (66), and the water distribution ring (6) is provided with an opening and closing component (7) for opening and closing the second channel (63); The opening and closing assembly (7) includes a sealing plate (71) slidably disposed on the inner side wall of the second channel (63), a positioning rod (72) fixedly connected to the sealing plate (71), and a first spring (73) sleeved on the positioning rod (72). The end of the positioning rod (72) extending out of the water-dividing ring (6) can abut against the arc plate (16). One end of the first spring (73) is fixedly connected to the positioning rod (72), and the other end of the first spring (73) is fixedly connected to the outer peripheral surface of the water-dividing ring (6).

2. The borehole cleaning device for bored piles according to claim 1, characterized in that: The drive assembly (5) includes a drive motor (51) installed in the first rotating ring (15), a lead screw (52) fixedly connected to the output shaft of the drive motor (51), and a drive rod (53) passing through the first rotating ring (15). The first rotating ring (15) has a slot (54) for sliding cooperation with the drive rod (53). The lead screw (52) passes through the drive rod (53) and is threadedly engaged with the drive rod (53). The end of the drive rod (53) away from the drive motor (51) is fixedly connected to the arc plate (16).

3. The borehole cleaning device for bored piles according to claim 1, characterized in that: The mounting ring (2) has a first cavity (24) inside, and the first rotating ring (15) has a first annular groove on the side near the mounting ring (2). The rotating assembly (3) includes a double-headed motor (31) mounted on the inner wall of the first cavity (24), a connecting rod (32) mounted on the output shaft of the double-headed motor (31), and a first rotating gear (33) fixedly sleeved on the connecting rod (32). An internal gear ring (23) for meshing with the first rotating gear (33) is fixedly connected to the inner wall of the first annular groove.

4. The borehole cleaning device for bored piles according to claim 3, characterized in that: A first annular flange (151) is fixedly connected to the first rotating ring (15). A first receiving groove (21) for accommodating the first annular flange (151) is opened in the mounting ring (2). A first fixing component (4) is provided in the mounting ring (2). The first fixing component (4) includes a mounting sleeve (41) fixedly connected to the dual-head motor (31), an abutment rod (42) passing through the mounting sleeve (41), and a second spring (43) fixedly connected to the abutment rod (42). The end of the second spring (43) away from the abutment rod (42) is fixedly connected to the inner end face of the mounting sleeve (41). A first electric push rod (25) is fixedly connected to the inner side wall of the first cavity (24). The piston rod of the first electric push rod (25) is fixedly connected to the dual-head motor (31).

5. A borehole cleaning device for bored piles according to claim 4, characterized in that: A second rotating ring (17) is sleeved on the connecting ring (14). The second rotating ring (17) rotates and engages with the side of the mounting ring (2) away from the first rotating ring (15). A second electric push rod (18) is provided inside the second rotating ring (17). A connecting column (181) is fixedly connected to the piston rod of the second electric push rod (18). A scraper (19) for cleaning the inner wall of the grouting pile hole is fixedly connected to the connecting column (181). The scraper (19) slides and engages with the outer circumferential surface of the arc plate (16). A rotating component (8) for driving the second rotating ring (17) to rotate is provided inside the mounting ring (2).

6. A borehole cleaning device for bored piles according to claim 5, characterized in that: The second rotating ring (17) has a second annular groove (83) on its side near the mounting ring (2). The rotating assembly (8) includes an outer gear ring (81) fixedly sleeved on the inner wall of the second annular groove (83) and a second rotating gear (82) fixedly sleeved on the output shaft of the double-headed motor (31) away from the first rotating ring (15). The second rotating gear (82) meshes with the outer gear ring (81).

7. A borehole cleaning device for bored piles according to claim 5, characterized in that: A second annular flange (84) is fixedly connected to the second rotating ring (17). A second receiving groove (85) for accommodating the second annular flange (84) is provided in the mounting ring (2). A guide groove (94) is provided on the inner side wall of the second receiving groove (85). A second fixing component (9) is provided in the mounting ring (2). The second fixing component (9) includes a clamping rod (91) slidably disposed on the inner side wall of the guide groove (94) and a component fixedly connected to the clamping rod (91). The third spring (92) and the metal wire (93) fixedly connected to the clamping rod (91) are provided. The end of the third spring (92) away from the clamping rod (91) is fixedly connected to the inner end face of the guide groove (94). A rotating roller (95) is installed on the inner side wall of the first cavity (24) near the first electric push rod (25). The end of the metal wire (93) away from the clamping rod (91) passes around the rotating roller (95) and is fixedly connected to the dual-head motor (31).

8. A method for cleaning boreholes in bored piles, based on a borehole cleaning device according to any one of claims 5-7, characterized in that: Includes the following steps: S1. Use hoisting equipment to put the cleaning pipe (1) into the grouting pile hole, and ensure that the axis of the cleaning pipe (1) coincides with the axis of the grouting pile hole. S2. The arc plate (16) is moved by the cooperation of the drive component (5) and the rotating component (3), thereby flattening the inner wall of the cast-in-place pile. S3. By cooperating with the arc plate (16) and the opening and closing component (7), clean the arc plate (16) with clean water to prevent mud blocks from sticking to the arc plate (16). S4. The scraper (19) is moved by the cooperation of the second electric push rod (18) and the rotating component (8) to clean the arc plate (16) on the one hand and further scrape the inner wall of the grouting pile hole on the other hand. S5. When the cleaning pipe (1) extends to the bottom surface of the grouting pile hole, start the mud pump (13) to clean the mud from the bottom surface of the grouting pile hole through the cleaning pipe (1), thereby improving the quality of the grouting pile.

Images