A high-efficiency hole-forming device for pile foundation construction

By setting up a fixed frame and lifting ring platform on the pile foundation hole, combined with a scraping structure and a leveling structure, the problems of incomplete cleaning of slag and uneven sidewalls in the pile foundation hole were solved, achieving efficient slag transfer and sidewall trimming, and improving construction quality.

CN119711977BActive Publication Date: 2026-01-30CHINA MCC17 GRP CO LTD
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Patent Information

Application Number
CN202411937108.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-26
Publication Date
2026-01-30
Estimated Expiration
2044-12-26

AI Technical Summary

Technical Problem

Existing pile foundation drilling equipment has limited functionality when cleaning up debris, and the uneven sidewalls of the pile foundation holes cause soil to fall off, affecting construction.

Method used

Design a high-efficiency hole-forming device that includes a fixed frame, a lifting ring platform, a scraping structure, and a leveling structure. The device uses a hoisting component to transfer slag and utilizes a lifting component and a hydraulic telescopic rod to adjust the position of the scraping plate and leveling wheel to adapt to the sidewalls of pile foundation holes of different sizes for trimming.

Benefits of technology

This improved the flatness and stability of the pile foundation hole sidewalls, enhanced the efficiency of slag removal, and ensured smooth construction.

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Abstract

This invention discloses a high-efficiency hole-forming device for pile foundation construction, including a fixed frame, a hoisting assembly, and a material collection frame. A lifting ring platform is connected to the bottom of the fixed frame via a lifting assembly. A first vertical plate and a second vertical plate are connected to the lifting ring platform via a rotating assembly, and corresponding scraping and leveling structures are provided. This invention uses the hoisting assembly and the material collection frame to transfer slag from the pile foundation hole; the lifting assembly moves the scraping and leveling structures within the pile foundation hole, and performs finishing treatment on the sidewall of the pile foundation hole, improving the wall surface effect and the stability of the soil on the wall; the hydraulic telescopic rod adjusts the position of the scraping plate and leveling wheel to adapt to different sizes of pile foundation hole sidewalls, increasing the applicability; and the rotating structure moves the scraping plate and leveling wheel along the sidewall of the pile foundation hole, achieving continuous scraping and leveling operation of the pile foundation hole sidewall, improving finishing efficiency.
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Description

Technical Field

[0001] This invention relates to the field of pile foundation construction technology, specifically to a high-efficiency hole-forming device for pile foundation construction. Background Technology

[0002] During pile foundation construction, the construction area is first selected, then blasting is used to create a pile hole. Construction then proceeds inside the hole to form the pile foundation borehole. Finally, the pile is hoisted into the borehole to complete the pile foundation construction. However, a large amount of sediment accumulates at the bottom of the pile foundation borehole, which needs to be cleaned; otherwise, it will affect subsequent construction.

[0003] A pile foundation drilling device and method, patent publication number CN113802558B, mainly includes a locking platform, a protective fence, and a construction support. The construction support is equipped with a blower system, a lighting system, and a slag removal mechanism. The slag removal mechanism includes a winch mechanism, a traction rope, and a container. During construction, the winch mechanism is used to raise and lower the traction rope, thereby raising and lowering the container to remove slag and other materials from the pile foundation drilling hole.

[0004] However, the above-mentioned device can only hold and transfer the cleaned slag when in use, and its function is relatively simple. When the pile foundation hole is formed, its side wall is not smooth enough, and soil often falls off, which affects the construction inside the pile foundation hole and the cleaning of slag.

[0005] Based on this, the present invention designs a high-efficiency hole-forming device for pile foundation construction to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a high-efficiency hole-forming device for pile foundation construction, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A high-efficiency hole-forming device for pile foundation construction includes a fixing frame, with vertical support frames symmetrically fixed on both sides of the bottom of the fixing frame, and a material collection frame connected to the lower middle part of the fixing frame via a hoisting assembly.

[0009] A lifting ring platform is provided below the fixed frame at the outer position of the material collection frame. The top of the lifting ring platform is connected to the fixed frame through a lifting component. A rotating component is provided on the outer side of the lifting ring platform. A first vertical plate is symmetrically fixed on the left and right sides of the top of the rotating component, and a second vertical plate is symmetrically fixed on the front and back sides of the top. A scraping structure is provided on the first vertical plate, and a flattening structure is provided on the second vertical plate.

[0010] The scraping structure includes a movable frame located outside the first vertical plate. The inner end of the movable frame is connected to the first vertical plate through two hydraulic telescopic rods. A rotating shaft is rotatably connected in the movable frame. Multiple scraping plates are evenly fixed on the rotating shaft along the circumferential direction, and a motor is connected to the top of the rotating shaft.

[0011] The leveling structure includes a movable frame located outside the second vertical plate. The inner end of the movable frame is connected to the second vertical plate via two hydraulic telescopic rods, and leveling wheels are rotatably connected in the movable frame.

[0012] Preferably, the rotating assembly includes a rotating ring plate rotatably connected to the outside of the lifting ring platform, a first vertical plate and a second vertical plate are both fixed to the top surface of the rotating ring plate, and a transmission gear ring is fixed to the bottom outer side of the rotating ring plate. A lifting ring plate is fixed to the bottom outer side of the lifting ring platform, and a drive gear is rotatably connected to the lifting ring plate. The drive gear is connected to a motor, and the drive gear meshes with the inner side of the transmission gear ring.

[0013] Preferably, the bottom of the transmission gear ring is evenly provided with multiple balls, which contact the top surface of the lifting ring plate through the balls.

[0014] Preferably, the lifting assembly includes two vertical first threaded shafts symmetrically fixed to the top of the lifting ring platform, and two first threaded cylinders rotatably connected to corresponding positions on the fixing frame. The first threaded shafts are threaded into the corresponding first threaded cylinders, and their top ends extend out of the first threaded cylinders. A worm gear is fixed to the lower part of the first threaded cylinder, and a worm is engaged with the rear side of the worm gear. The two worms are coaxially fixed and rotatably connected to the bottom of the fixing frame, and one end of one of the worms is connected to a motor.

[0015] Preferably, the hoisting assembly includes a fixed plate fixed to the top of the fixed frame. Two rollers are symmetrically arranged and rotatably connected on the fixed plate. One end of the roller axle extends out of the fixed plate and is fixed with a first gear. A second gear meshes with the inner side of the first gear. The two second gears mesh with each other, and one of the second gears is connected to a motor. The motor is fixed to the fixed plate.

[0016] A horizontal plate is fixed to the upper part of the material collection frame. Two lifting ropes are symmetrically fixed to the top of the horizontal plate. The fixing frame has rope grooves at the positions corresponding to the lifting ropes. The top of the lifting rope passes through the rope groove and is wound on the corresponding reel.

[0017] Preferably, two guide wheels are symmetrically arranged and rotatably connected in the rope groove, and the suspension rope is located between the two guide wheels.

[0018] Preferably, two circular baffles are symmetrically fixed on the reel, and the suspension rope is located between the two baffles.

[0019] Preferably, the bottom of the collection frame is open and a bottom plate is provided at the bottom end. Two vertical second threaded cylinders are symmetrically fixed on the top surface of the bottom plate. A second threaded shaft is threadedly connected to the second threaded cylinder. The second threaded shaft is rotatably connected to the horizontal plate and its top end passes through the horizontal plate and is fixed with a handle.

[0020] Preferably, a support plate is fixed to the bottom of the support frame, and multiple positioning bolts are evenly distributed on the support plate.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This invention provides a support frame and a fixing frame above the pile foundation hole, and uses a hoisting assembly to move the aggregate frame up and down in the pile foundation hole, so that construction workers can transfer and discharge the slag generated during the hole-forming operation in the pile foundation hole.

[0023] 2. The present invention uses a lifting assembly to make the lifting ring platform drive the scraping structure and the leveling structure to move intermittently in the vertical direction in the pile hole. Each time the movement stops, the scraping structure and the leveling structure are used to repair the side wall of the pile hole, thereby improving the wall effect of the pile hole and the stability of the wall soil.

[0024] 3. This invention adjusts the position of the scraper and leveling wheel by means of a hydraulic telescopic rod to adapt to the sidewalls of pile foundation holes of different sizes, thereby increasing the applicability. The rotating structure allows the scraper and leveling wheel to move along the sidewalls of the pile foundation holes, thereby achieving continuous scraping and leveling operations on the sidewalls of the pile foundation holes and improving the finishing efficiency. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the middle structure of the fixing frame of the present invention;

[0028] Figure 3 This is a schematic diagram of the material collection frame of the present invention;

[0029] Figure 4 This is a schematic diagram of the end structure of the reel of the present invention;

[0030] Figure 5 This is a schematic diagram of the scraper plate of the present invention;

[0031] Figure 6This is a schematic diagram of the structure of the leveling wheel of the present invention;

[0032] Figure 7 for Figure 1 Schematic diagram of the structure at point A in the middle;

[0033] Figure 8 This is a schematic diagram of the worm gear of the present invention.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 100-Fixed frame, 101-Support frame, 102-Support plate, 103-Positioning bolt, 104-Fixed plate, 105-Guide wheel;

[0036] 200-Collection frame, 201-Base plate, 202-Horizontal plate, 203-Lifting rope, 204-Second threaded cylinder, 205-Second threaded shaft, 206-Winding wheel, 207-Baffle, 208-First gear, 209-Second gear;

[0037] 300-Lifting ring platform, 301-Lifting ring plate, 302-First threaded shaft, 303-First threaded cylinder, 304-Worm wheel, 305-Worm;

[0038] 400-Rotating ring plate, 401-Transmission gear ring, 402-Drive gear, 403-First vertical plate, 404-Hydraulic telescopic rod, 405-Moving frame, 406-Second vertical plate; 500-Scraper plate, 501-Rotating shaft; 600-Leveling wheel. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1

[0041] Please see the appendix Figures 1-8 The present invention provides a technical solution:

[0042] A high-efficiency hole-forming device for pile foundation construction includes a fixing frame 100, with vertical support frames 101 symmetrically fixed on both sides of the bottom of the fixing frame 100, and a material collection frame 200 connected to the lower middle part of the fixing frame 100 through a hoisting assembly.

[0043] A lifting ring platform 300 is provided below the fixed frame 100 at the outer position of the material collection frame 200. The top of the lifting ring platform 300 is connected to the fixed frame 100 through a lifting assembly. A rotating assembly is provided on the outer side of the lifting ring platform 300. A first vertical plate 403 is symmetrically fixed on the left and right sides of the top of the rotating assembly, and a second vertical plate 406 is symmetrically fixed on the front and rear sides of the top. A scraping structure is provided on the first vertical plate 403, and a flattening structure is provided on the second vertical plate 406.

[0044] The scraping structure includes a movable frame 405 located outside the first vertical plate 403. The inner end of the movable frame 405 is connected to the first vertical plate 403 through two hydraulic telescopic rods 404. A rotating shaft 501 is rotatably connected in the movable frame 405. Multiple scraping plates 500 are evenly fixed on the rotating shaft 501 along the circumferential direction. A motor is connected to the top of the rotating shaft 501.

[0045] The leveling structure includes a movable frame 405 located outside the second vertical plate 406. The inner end of the movable frame 405 is connected to the second vertical plate 406 via two hydraulic telescopic rods 404. Leveling wheels 600 are rotatably connected in the movable frame 405.

[0046] During the construction of the pile foundation hole, the support frame 101 is fixed to the outer side of the top of the pile foundation hole, so that the fixing frame 100 is located above the pile foundation hole, and the material collection frame 200 is located at the position of the pile foundation hole. The material collection frame 200 is raised and lowered in the pile foundation hole by the hoisting component, so that the construction workers can transfer the slag generated in the pile foundation hole during the hole construction operation and discharge it from the pile foundation hole.

[0047] When it is necessary to repair the sidewall of the pile hole, the lifting ring platform 300 is moved intermittently in the pile hole by the lifting assembly. After moving a certain distance, the position of the scraper 500 is adjusted by the corresponding hydraulic telescopic rod 404 so that the outer edge of the scraper 500 can contact the sidewall of the pile hole. The motor drives the rotating shaft 501 to rotate multiple scraper 500 to scrape the sidewall of the pile hole. At the same time, the rotating assembly makes the scraping structure move in the circumferential direction, so that the circumferential sidewall of the pile hole can be fully scraped.

[0048] After the scraping structure scrapes a section of the wall surface of the pile hole, the position of the moving frame 405 in the leveling structure is adjusted by the corresponding hydraulic telescopic rod 404, so that the leveling wheel 600 contacts the wall surface of the pile hole after scraping. Under the rotation of the rotating component, the leveling wheels 600 on both sides are used to level the pile hole, improving the wall surface effect of the pile hole and the stability of the wall soil.

[0049] The rotating assembly includes a rotating ring plate 400 rotatably connected to the outside of the lifting ring platform 300. The first vertical plate 403 and the second vertical plate 406 are both fixed to the top surface of the rotating ring plate 400, and a transmission gear ring 401 is fixed to the bottom outer side of the rotating ring plate 400. The lifting ring plate 301 is fixed to the bottom outer side of the lifting ring platform 300. A drive gear 402 is rotatably connected to the lifting ring plate 301. The drive gear 402 is connected to a motor, and the drive gear 402 meshes with the inner side of the transmission gear ring 401. Through the drive of the motor and the transmission of the drive gear 402 and the transmission gear ring 401, the rotating ring plate 400 can drive the first vertical plate 403, the second vertical plate 406 and the scraper 500 and the leveling wheel 600 on them to rotate, so as to trim the side wall of the pile foundation hole.

[0050] The bottom of the transmission gear ring 401 is evenly provided with multiple balls, which contact the top surface of the lifting ring plate 301. Thus, the transmission gear ring 401 and the lifting ring plate 301 provide support for the outer side of the rotating ring plate 400. During rotation, the balls reduce friction and improve the flexibility of movement.

[0051] The lifting assembly includes two vertical first threaded shafts 302 symmetrically fixed to the top of the lifting ring platform 300. Two first threaded cylinders 303 are rotatably connected to the corresponding positions on the fixing frame 100. The first threaded shafts 302 are threaded into the corresponding first threaded cylinders 303, and their top ends extend out of the first threaded cylinders 303. A worm gear 304 is fixed to the lower part of the first threaded cylinder 303. A worm 305 is meshed on the rear side of the worm gear 304. The two worms 305 are coaxially fixed and rotatably connected to the bottom of the fixing frame 100. One end of one of the worms 305 is connected to a motor.

[0052] When it is necessary to adjust the height position of structures such as scraper 500 and leveling wheel 600, the worm gear 305 is driven by the motor, and through the transmission of the worm gear 305 and worm wheel 304, the two first threaded cylinders 303 rotate simultaneously, thereby causing the two first threaded shafts 302 to drive the lifting ring platform 300 and its structure to move in the vertical direction and adjust the height position.

[0053] The hoisting assembly includes a fixed plate 104 fixed to the top of the fixed frame 100. Two rollers 206 are symmetrically arranged and rotatably connected on the fixed plate 104. One end of the roller axle of the roller 206 extends out of the fixed plate 104 and is fixed with a first gear 208. A second gear 209 is meshed on the inner side of the first gear 208. The two second gears 209 mesh with each other, and one of the second gears 209 is connected to a motor. The motor is fixed to the fixed plate 104.

[0054] A horizontal plate 202 is fixed to the upper part of the material collection frame 200. Two lifting ropes 203 are symmetrically fixed to the top of the horizontal plate 202. The fixing frame 100 is provided with rope grooves corresponding to the positions of the lifting ropes 203. The top of the lifting ropes 203 passes through the rope grooves and is wound on the corresponding reel 206.

[0055] When the material collection frame 200 needs to be raised or lowered, the motor drives the two first gears 208 to rotate the corresponding winding wheels 206 through the transmission of the two second gears 209, thereby simultaneously winding or unwinding the two lifting ropes 203 to achieve the raising or lowering of the material collection frame 200.

[0056] Example 2

[0057] The structure of this embodiment is basically the same as that of embodiment one. The difference is that two guide wheels 105 are symmetrically arranged and rotatably connected in the rope groove. The suspension rope 203 is located between the two guide wheels 105. The guide wheels 105 improve the guiding effect of the suspension rope 203 and avoid the suspension rope 203 from contacting the edge of the rope groove, thereby reducing the wear of the suspension rope 203. An annular groove can be provided around the wheel surface of the guide wheel 105 to further restrict the position of the suspension rope 203.

[0058] Two circular baffles 207 are symmetrically fixed on the reel 206, and the suspension rope 203 is located between the two baffles 207. The baffles 207 restrict the winding position of the suspension rope 203, preventing the suspension rope 203 from approaching the end of the reel 206, thereby preventing the suspension rope 203 from detaching from the end of the reel 206.

[0059] Example 3

[0060] The structure of this embodiment is basically the same as that of Embodiment 1. The difference is that the bottom of the collection frame 200 is open and a bottom plate 201 is provided at the bottom end. Two vertical second threaded cylinders 204 are symmetrically fixed on the top surface of the bottom plate 201. A second threaded shaft 205 is threadedly connected to the second threaded cylinder 204. The second threaded shaft 205 is rotatably connected to the horizontal plate 202 and its top end passes through the horizontal plate 202 and is fixed with a handle. When it is inconvenient to rotate the collection frame 200 to pour out the slag, the two handles are used to rotate the second threaded shafts 205 on both sides at the same time. Thus, through the action of the threads, the two threaded cylinders drive the bottom plate 201 to move down, opening the bottom end of the collection frame 200, so that the slag can be discharged from the bottom of the collection frame 200, making the material discharge from the collection frame 200 faster and more convenient.

[0061] Example 4

[0062] The structure of this embodiment is basically the same as that of embodiment one. The difference is that a support plate 102 is fixed at the bottom of the support frame 101. The support plate 102 increases the contact area between the support frame 101 and the ground, thereby increasing the support stability. In addition, a plurality of positioning bolts 103 are evenly provided on the support plate 102, so that the support plate 102 is connected to the ground through the positioning bolts 103, further improving the support stability.

[0063] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-efficiency hole-forming device for pile foundation construction, comprising a fixing frame (100), vertical support frames (101) are symmetrically fixed on both sides of the bottom of the fixing frame (100), and a material collecting frame (200) is connected to the lower middle part of the fixing frame (100) through a hoisting assembly, characterized in that: a lifting ring table (300) is arranged at the position corresponding to the outer side of the material collecting frame (200) below the fixing frame (100), the top of the lifting ring table (300) is connected with the fixing frame (100) through a lifting assembly, a rotating assembly is arranged on the outer side of the lifting ring table (300), first vertical plates (403) are symmetrically fixed on the top of the rotating assembly, second vertical plates (406) are symmetrically fixed on the top of the rotating assembly, a scraping structure is arranged on the first vertical plate (403), and a leveling structure is arranged on the second vertical plate (406); the scraping structure comprises a moving frame (405) arranged on the outer side of the first vertical plate (403), the inner side end of the moving frame (405) is connected with the first vertical plate (403) through two hydraulic telescopic rods (404), a rotating shaft (501) is rotatably connected in the moving frame (405), a plurality of scraping plates (500) are uniformly fixed on the rotating shaft (501) in the circumferential direction, and a motor is connected to the top end of the rotating shaft (501); the leveling structure comprises a moving frame (405) arranged on the outer side of the second vertical plate (406), the inner side end of the moving frame (405) is connected with the second vertical plate (406) through two hydraulic telescopic rods (404), and a leveling wheel (600) is rotatably connected in the moving frame (405); the hoisting assembly comprises a fixed plate (104) fixed to the top of the fixing frame (100), two reel wheels (206) are symmetrically arranged on the fixed plate (104) and rotatably connected, the shaft of the reel wheel (206) extends out of the fixed plate (104) at one end and is fixed with a first gear (208), the inner side of the first gear (208) is engaged with a second gear (209), the two second gears (209) are engaged with each other, and one of the second gears (209) is connected to a motor, and the motor is fixed to the fixed plate (104); a cross plate (202) is fixed to the upper part of the material collecting frame (200), two lifting ropes (203) are symmetrically fixed to the top of the cross plate (202), the position corresponding to the lifting rope (203) is provided with a rope groove on the fixing frame (100), the top end of the lifting rope (203) passes through the rope groove and is wound on the corresponding reel wheel (206); the bottom of the material collecting frame (200) is provided in an open shape, and a bottom plate (201) is arranged at the bottom end, two vertical second threaded cylinders (204) are symmetrically fixed to the top surface of the bottom plate (201), a second threaded shaft (205) is threadedly connected in the second threaded cylinder (204), the second threaded shaft (205) is rotatably connected with the cross plate (202), and the top end passes through the cross plate (202) and is fixed with a handle.

2. The efficient hole-forming device for pile foundation construction according to claim 1, characterized in that: The rotating assembly comprises a rotating ring plate (400) rotatably connected to the outside of the lifting ring table (300), the first vertical plate (403) and the second vertical plate (406) are both fixed to the top surface of the rotating ring plate (400), and the bottom outside of the rotating ring plate (400) is fixed with a transmission gear ring (401), the bottom outside of the lifting ring table (300) is fixed with a lifting ring plate (301), the lifting ring plate (301) is rotatably connected with a driving gear (402), the driving gear (402) is connected with a motor, and the driving gear (402) is engaged with the inside of the transmission gear ring (401).

3. The efficient hole-forming device for pile construction of claim 2, characterized in that: The bottom of the transmission gear ring (401) is uniformly provided with a plurality of balls, and the balls are in contact with the top surface of the lifting ring plate (301).

4. The efficient hole-forming device for pile construction of claim 1, wherein: The lifting assembly comprises two vertical first threaded shafts (302) symmetrically fixed to the top of the lifting ring table (300), two first threaded barrels (303) are rotatably connected to the corresponding positions of the fixed frame (100), the first threaded shafts (302) are threadedly connected in the corresponding first threaded barrels (303), and the top ends of the first threaded shafts (302) extend out of the first threaded barrels (303), the lower part of the first threaded barrel (303) is fixed with a worm gear (304), the rear side of the worm gear (304) is engaged with a worm (305), the two worm gears (305) are coaxially fixed and rotatably connected with the bottom of the fixed frame (100), and one end of one of the worm gears (305) is connected with a motor.

5. The efficient hole-forming device for pile construction of claim 1, wherein: Two guide wheels (105) are symmetrically arranged in the rope groove and rotatably connected, and the lifting rope (203) is located between the two guide wheels (105).

6. The pile foundation construction high efficiency hole forming device according to claim 1, characterized in that: Two circular baffles (207) are symmetrically fixed on the winding wheel (206), and the lifting rope (203) is located between the two baffles (207).

7. The efficient hole-forming device for pile foundation construction according to any one of claims 1-6, characterized in that: The bottom end of the support frame (101) is fixed with a support plate (102), and the support plate (102) is uniformly provided with a plurality of positioning bolts (103).

Citation Information

Patent Citations

  • A pile foundation drilling device and method

    CN113802558B

  • Cast-in-situ bored pile hole cleaning device and construction method thereof

    CN117488806A

  • Sediment treatment device for pile foundation hole-forming construction

    CN220849601U