A piling hole dredging device and a dredging method

Abstract

The application discloses a piling hole dredging device and method, and belongs to the technical field of engineering equipment, which comprises a base structure, two columns, a slide rail structure, and the like. The columns are fixedly connected to the upper surface of the base structure. The slide rail structure is arranged below the base structure and is used for placing and horizontally moving the base structure. The scheme can efficiently and sequentially dredge the arranged piling holes, can maintain stability and improve safety during movement, and can maintain the dredging cylinder in a continuous rotating state under the driving assembly. The dredging cylinder can be punched into the bottom of the piling hole under the height change of the lifting assembly controlled by the winding assembly. The scheme can realize efficient and deep dredging operation, has high overall mechanization degree, requires few operators, and improves sequential dredging efficiency.

Description

Technical Field

[0001] This invention belongs to the field of engineering equipment technology, specifically, it relates to a dredging device and method for piling holes. Background Technology

[0002] As construction needs currently require, most buildings require the driving of foundation piles to a certain depth. After the pile holes are drilled, they are often filled with silt and mud, necessitating cleaning. Traditionally, building pile holes are arranged in a square layout, with several rows and columns of holes accurately drilled after measurement. Cleaning large pile holes is a relatively laborious process, often requiring a long time and easily resulting in them refilling with mud and water. Therefore, there is a need for a fast and efficient silt removal device.

[0003] In view of this, the present invention is proposed. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0005] A dredging device and method for piling holes, comprising:

[0006] Base structure;

[0007] Two pillars;

[0008] The column is fixedly connected to the upper surface of the base structure;

[0009] Slide rail structure;

[0010] The slide rail structure is located below the base structure and is used for the placement and horizontal movement of the base structure.

[0011] Lifting assembly;

[0012] The lifting assembly moves axially between the two columns and slides in contact with the opposite surfaces of the two columns;

[0013] Wheelset;

[0014] The wheel set is fixedly connected to one side of the lifting assembly, and the inner wall of the wheel set is fitted with a dredging cylinder for pile hole dredging.

[0015] Press-fit components;

[0016] The pressing assembly is installed on one side of the wheel assembly and is used to cooperate with the wheel assembly to clamp the dredging cylinder;

[0017] Driver components;

[0018] Fixed to the upper surface of the wheelset, used to provide power to the wheelset;

[0019] Rewind assembly;

[0020] It is fixedly connected to the upper surface of the base structure and is used to control the height of the lifting component by pulling a rope.

[0021] As a further embodiment of the present invention: a pulley is slidably provided on the surface of the pull rope, and a beam is axially rotatably inserted through the pulley, with the two ends of the beam being fixedly connected to the opposite surfaces of two columns.

[0022] As a further aspect of the present invention: the base structure includes a connecting plate, two supports are fixedly connected to both sides of the connecting plate, the upper surfaces of the two supports are jointly fixedly connected to a mounting bracket for mounting the winding assembly, and a plurality of rollers are fixedly connected to the lower surface of the supports.

[0023] As a further embodiment of the present invention: support plates are fixed on both sides of the column, and the lower surface of the support plates is fixedly connected to the upper surface of the slide rail structure.

[0024] As a further embodiment of the present invention: the slide rail structure includes a limiting seat, the lower surface of the limiting seat is fixedly connected to a pressure plate for ground contact, and the inner wall of the limiting seat is provided with a sliding groove for cooperating with the pulley to limit rolling.

[0025] As a further embodiment of the present invention: the lifting assembly includes a lifting frame, and several limiting wheels are provided on both sides of the lifting frame. The limiting wheels slide against the surface of the column. A card seat is engaged on one side of the lifting frame. A rotating component is installed on the surface of the card seat. A vertical plate is installed on the surface of the rotating component. A pin is provided on the top of the vertical plate. Several insertion holes for fixing with the pin are opened on the surface of the lifting frame.

[0026] As a further embodiment of the present invention: the wheel set includes a fixed frame fixedly connected to a vertical plate, a plurality of transmission wheels rotatably passing through the inner wall of the fixed frame, a planetary gear fixedly connected to the top of the transmission wheel, the planetary gear being arranged above the fixed frame, an internal gear ring meshing with the surfaces of the plurality of planetary gears, the internal gear ring being installed on the inner wall of the drive assembly, a push plate fixedly connected to the lower surface of the fixed frame, and a first ring frame fixedly connected to the inner wall of the fixed frame.

[0027] As a further aspect of the present invention: the pressing assembly includes two hydraulic rods fixedly connected to the lower push plate, and each of the telescopic ends of the two hydraulic rods is fixedly connected to a plate. The two plates are jointly fixedly connected to a pressing frame. The inner wall of the pressing frame has several pressure rollers that rotate through it. The inner wall of the pressing frame is fixedly connected to a second ring frame that engages with the first ring frame.

[0028] As a further aspect of the present invention: the drive assembly includes a rotating connector that is mounted through the surface of the fixed frame, a driven wheel is fixed to the inner wall of the rotating connector, a driving wheel is connected to the surface of the driven wheel via a transmission belt, a driver is provided below the driving wheel to provide power to it, the driver is fixedly connected to the surface of the fixed frame, and the internal gear ring is fixedly connected to the bottom of the inner wall of the driven wheel.

[0029] As a further aspect of the present invention: a method for dredging pile holes, comprising the following methods:

[0030] Align the two slide rail structures according to the direction of the array of pile holes, and lay them on both sides of the pile holes at the specified intervals.

[0031] Place the base structure above the slide rail structure, keeping the rollers of the base structure within the slide groove;

[0032] The motor of the control winding assembly is used to drive the winding wheel to rotate through the reducer, releasing the pull rope. The pull rope rolls on the surface of the pulley, lowering the lifting assembly to its lowest point. At this time, the sludge removal cylinder passes through the drive assembly and is positioned between the wheel assembly and the pressing assembly.

[0033] The control winding assembly moves the lifting assembly to the top of the column and activates the hydraulic rod. The hydraulic rod retracts and moves the pressing frame until the second ring frame is in contact with the first ring frame, so that the multiple drive wheels and the pressure wheel cooperate to clamp the sludge removal cylinder.

[0034] When the driver is started, the driver drives the drive wheel to rotate. When the drive wheel rotates, it drives the driven wheel to rotate through the transmission belt. Then the driven wheel rotates under the support of the support plate through the rotating connector. When the driven wheel rotates, it drives the internal gear ring on the inner wall to rotate, so that the internal gear ring drives the multiple planetary gears meshing on the inner wall to rotate synchronously.

[0035] At this time, the planetary gear drives the corresponding transmission wheel to rotate, and the pressure wheel presses the sludge cylinder onto the surface of the transmission wheel, so that the sludge cylinder starts to rotate under the drive of the transmission wheel; at the same time, the motor drives the reducer, which drives the winding wheel to continuously release the pull rope, so that the lifting component slides down on the surface of the column, maintaining the sludge cylinder to rotate continuously and drill downwards.

[0036] When the lifting assembly reaches the lowest position, the hydraulic rod is extended to move the pressing assembly. After the pressure roller moves, the sludge cleaning cylinder loses its holding force. At this time, the motor drive of the winding assembly will cause the winding roller to wind up the pull rope. Then, the pull rope will move the lifting assembly to the highest position, and the hydraulic rod will be activated to drive the pressure roller on the surface of the pressing frame to press the sludge cleaning cylinder again. The sludge cleaning steps can then be repeated.

[0037] Beneficial effects:

[0038] This solution, by employing a sliding rail structure, enables efficient sequential dredging movement of pile holes arranged in a single row. During the movement, any swaying is prevented by the vertical plate, which, under the gravity of the rotating components, maintains the wheel assembly, pressing components, and their fixed dredging cylinder in a stable vertical state. This prevents swaying due to ground undulations, thus maintaining stability and improving safety.

[0039] Meanwhile, the wheel assembly can maintain the dredging cylinder in a continuous rotation state under the trend of the drive component. With the height change of the lifting component controlled by the winding component, the dredging cylinder can be driven into the bottom of the pile hole. This method can achieve efficient and deep dredging operations, with a high degree of mechanization, fewer operator requirements, and thus improved dredging efficiency.

[0040] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0041] In the attached diagram:

[0042] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0043] Figure 2 This is a three-dimensional structural diagram of the base structure of the present invention;

[0044] Figure 3 This is a three-dimensional structural schematic diagram of the lifting component of the present invention;

[0045] Figure 4 This is a three-dimensional cross-sectional structural diagram of the wheel assembly of the present invention;

[0046] Figure 5 This is a three-dimensional structural schematic diagram of the present invention from another perspective;

[0047] Figure 6 This is a schematic diagram of the installation structure of the top plate, vertical plate, and support plate of the present invention;

[0048] Figure 7 This is a schematic diagram of the structure of the first ring frame and the second ring frame of the present invention in the separated state.

[0049] In the diagram: 1. Column; 2. Base structure; 21. Connecting plate; 22. Support; 23. Roller; 24. Mounting bracket; 3. Slide rail structure; 31. Limit seat; 32. Slide groove; 33. Pressure plate; 4. Lifting assembly; 41. Lifting frame; 42. Limit wheel; 43. Rotating component; 44. Vertical plate; 45. Pin; 46. Card slot; 47. Socket; 5. Drive assembly; 51. Support plate; 52. Rotating connector; 53. Driven wheel; 54. Driver; 55. 56. Drive wheel; 67. Drive belt; 68. Wheel set; 69. Fixing frame; 60. Push plate; 61. First ring frame; 62. Drive wheel; 63. Planetary gear; 64. Internal gear ring; 75. Pressing assembly; 76. Pressing frame; 77. Pressure roller; 78. Second ring frame; 79. Hydraulic rod; 70. Assembly plate; 80. Winding assembly; 81. Motor; 82. Reducer; 83. Winding wheel; 9. Beam and column; 10. Pulley; 11. Pull rope; 12. Dredging cylinder; 13. Support plate. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0051] Example 1

[0052] Please see Figures 1 to 7 This invention provides a technical solution: a dredging device and method for piling holes, comprising:

[0053] Base structure 2;

[0054] Two pillars 1;

[0055] The column 1 is fixedly connected to the upper surface of the base structure 2;

[0056] Slide rail structure 3;

[0057] The slide rail structure 3 is located below the base structure 2 and is used for the placement and horizontal movement of the base structure 2;

[0058] Lifting component 4;

[0059] The lifting assembly 4 moves axially between the two columns 1 and slides in contact with the opposite surfaces of the two columns 1;

[0060] Wheelset 6;

[0061] The wheel set 6 is fixedly connected to one side of the lifting assembly 4, and the inner wall of the wheel set 6 is fitted with a dredging cylinder 12 for pile hole dredging.

[0062] Pressing component 7;

[0063] The pressing assembly 7 is installed on one side of the wheel set 6 and is used to cooperate with the wheel set 6 to clamp the sludge removal cylinder 12;

[0064] Driver component 5;

[0065] It is fixed to the upper surface of the wheelset 6 and is used to provide power to the wheelset 6;

[0066] Rewinding assembly 8;

[0067] It is fixedly connected to the upper surface of the base structure 2 and is used to control the height of the lifting assembly 4 by pulling the rope 11.

[0068] A pulley 10 is slidably provided on the surface of the pull rope 11. A beam 9 is axially rotatably passed through the pulley 10. The two ends of the beam 9 are fixedly connected to the opposite surfaces of the two columns 1.

[0069] The beam 9 supports the pulley 10, keeping the pulley 10 rotating at a fixed point, while the pulley 10 keeps the surface rope 11 in a stable sliding state.

[0070] The base structure 2 includes a connecting plate 21. Two supports 22 are fixedly connected to both sides of the connecting plate 21. The upper surfaces of the two supports 22 are fixedly connected to a mounting bracket 24 for mounting the winding assembly 8. Several rollers 23 are fixedly connected to the lower surface of the supports 22.

[0071] The two supports 22 are fixed to each other by the mounting bracket 24 and the connecting plate 21 to form a whole, so that the overall structure is stable and the roller 23 on the lower surface is in stable support.

[0072] Support plates 13 are fixed on both sides of the column 1, and the lower surface of the support plates 13 is fixedly connected to the upper surface of the slide rail structure 3.

[0073] The slide rail structure 3 includes a limiting seat 31, and a pressure plate 33 for ground contact is fixedly connected to the lower surface of the limiting seat 31. The inner wall of the limiting seat 31 is provided with a slide groove 32 for cooperating with the pulley 10 to limit rolling.

[0074] The pressure plate 33 can increase the pressure on the ground and can provide stable support to the soil surface.

[0075] The lifting assembly 4 includes a lifting frame 41. Several limiting wheels 42 are provided on both sides of the lifting frame 41. The limiting wheels 42 slide against the surface of the column 1. A card seat 46 is snapped into one side of the lifting frame 41. A rotating part 43 is installed on the surface of the card seat 46. A vertical plate 44 is installed on the surface of the rotating part 43. A pin 45 is provided on the top of the vertical plate 44. Several insertion holes 47 are opened on the surface of the lifting frame 41 for fixing with the pin 45.

[0076] The mounting bracket 46 can be installed on the surface of the lifting frame 41, and the mounting bracket 46 can be disassembled when needed.

[0077] The wheel assembly 6 includes a fixed frame 61 fixedly connected to the vertical plate 44. Several transmission wheels 64 are rotatably traversed through the inner wall of the fixed frame 61. Planetary gears 65 are fixedly connected to the top of the transmission wheels 64. The planetary gears 65 are located above the fixed frame 61. The surfaces of the several planetary gears 65 mesh with an internal gear ring 66. The internal gear ring 66 is installed on the inner wall of the drive assembly 5. A push plate 62 is fixedly connected to the lower surface of the fixed frame 61. A first ring frame 63 is fixedly connected to the inner wall of the fixed frame 61.

[0078] The pressing assembly 7 includes two hydraulic rods 74 fixedly connected to the lower push plate 62. The telescopic ends of the two hydraulic rods 74 are fixedly connected to the assembly plates 75. The two assembly plates 75 are fixedly connected to the pressing frame 71. Several pressure rollers 72 rotate through the inner wall of the pressing frame 71. A second ring frame 73 that fits into the first ring frame 63 is fixedly connected to the inner wall of the pressing frame 71.

[0079] The drive assembly 5 includes a rotating connector 52 that is mounted through the surface of the fixed frame 61. A driven wheel 53 is fixed to the inner wall of the rotating connector 52. A driving wheel 55 is connected to the surface of the driven wheel 53 via a transmission belt 56. A driver 54 that provides power to the driving wheel 55 is disposed below the driving wheel 55. The driver 54 is fixedly connected to the surface of the fixed frame 61. An internal gear ring 66 is fixedly connected to the bottom of the inner wall of the driven wheel 53.

[0080] Two slide rail structures 3 are placed on both sides of the array of pile holes and aligned with the direction of the pile holes.

[0081] The base structure 2 is placed above the slide rail structure 3, and the rollers 23 on the base structure 2 are located in the slide groove 32.

[0082] The motor 81 controls the winding assembly 8, which drives the winding wheel 83 to rotate via the reducer 82, thereby releasing the pull rope 11.

[0083] The pull rope 11 rolls along the surface of the pulley 10, lowering the lifting assembly 4 to its lowest position.

[0084] At this time, the dredging cylinder 12 is passed through the drive assembly 5 and is located between the wheel assembly 6 and the pressing assembly 7.

[0085] Control the winding assembly 8 to move the lifting assembly 4 to the top of the column 1.

[0086] The hydraulic rod 74 is activated, and the contraction of the hydraulic rod 74 causes the pressing frame 71 to move. The second ring frame 73 fits into the first ring frame 63, and the cooperation between the multiple transmission wheels 64 and the pressure wheel 72 clamps the sludge removal cylinder 12.

[0087] Start the driver 54, which drives the drive wheel 55 to rotate, and the driven wheel 53 connected to the transmission belt 56 also begins to rotate.

[0088] Driven wheel 53 rotates under the support of support plate 51 via rotating connector 52, driving internal gear ring 66 to rotate.

[0089] The internal gear ring 66 meshes with multiple planetary gears 65, causing them to rotate synchronously.

[0090] Planetary gear 65 drives transmission wheel 64 to rotate, and pressure wheel 72 clamps sludge removal cylinder 12 on the surface of transmission wheel 64, thereby starting the rotation of sludge removal cylinder 12.

[0091] When the lifting assembly 4 reaches the lowest position, the hydraulic rod 74 is extended to move the pressing assembly 7, thereby releasing the clamping force of the pressure roller 72 on the sludge removal cylinder 12.

[0092] The motor 81 of the winding assembly 8 drives the winding wheel 83 to tighten the pull rope 11, moving the lifting assembly 4 to the highest position.

[0093] The hydraulic rod 74 restarts, and the pressure roller 72 of the pressing frame 71 clamps the dredging cylinder 12 again, ready for the next round of dredging.

[0094] The entire dredging process can be automated through the combination of motor 81, hydraulic system, and drive unit 54, reducing the need for manual operation and improving dredging efficiency. The lifting component 4, hydraulic control, and transmission system work together to achieve precise lifting, movement, and rotation, making dredging operations more efficient and accurate. The equipment can repeatedly perform dredging steps without much manual intervention, thus handling a large number of dredging tasks in a short time. Automated operation can reduce personnel exposure time in hazardous environments, thereby improving the safety of dredging operations. Since the structure of the equipment can be adjusted according to the layout of the pile holes, it is suitable for pile holes of different sizes and layouts, and has a certain degree of flexibility and adaptability. The equipment can achieve continuous dredging operations through automated winding and releasing of the pull rope 11, improving processing capacity. The use of hydraulic control and transmission system can achieve precise position and force control, ensuring the accuracy and stability of the dredging process. Automated equipment can reduce labor costs while reducing manual operation, especially in large-scale dredging operations.

[0095] The working principle of this invention is as follows:

[0096] Align the two slide rail structures 3 with the direction of the array of pile holes, and lay them on both sides of the pile holes at the specified intervals. Place the base structure 2 on top of the slide rail structure 3, keeping the rollers 23 of the base structure 2 in the groove 32.

[0097] The motor 81 of the winding assembly 8 is controlled to drive the winding wheel 83 to rotate through the reducer 82, releasing the pull rope 11. The pull rope 11 rolls on the surface of the pulley 10, lowering the lifting assembly 4 to its lowest point. At this time, the sludge dredging cylinder 12 passes through the drive assembly 5 and is positioned between the wheel set 6 and the pressing assembly 7. The winding assembly 8 is controlled to move the lifting assembly 4 to the top of the column 1, and the hydraulic rod 74 is activated. The hydraulic rod 74 retracts and moves the pressing frame 71 until the second ring frame 73 is in contact with the first ring frame 63, so that the multiple transmission wheels 64 and the pressure wheel 72 cooperate to clamp the sludge dredging cylinder 12.

[0098] Start the driver 54, which drives the drive wheel 55 to rotate. When the drive wheel 55 rotates, it drives the driven wheel 53 to rotate through the transmission belt 56. Then the driven wheel 53 rotates under the support of the support plate 51 through the rotating connector 52. When the driven wheel 53 rotates, it drives the internal gear ring 66 on the inner wall to rotate, so that the internal gear ring 66 drives the multiple planetary gears 65 meshing on the inner wall to rotate synchronously.

[0099] At this time, the planetary gear 65 drives the corresponding transmission wheel 64 to rotate, and the pressure wheel 72 presses the sludge cylinder 12 onto the surface of the transmission wheel 64, so that the sludge cylinder 12 starts to rotate under the drive of the transmission wheel 64; at the same time, the motor 81 drives the reducer 82, so that the reducer 82 drives the winding wheel 83 to continuously release the pull rope 11, so that the lifting component 4 slides downward on the surface of the column 1, maintaining the sludge cylinder 12 to continuously rotate and drill downward.

[0100] When the lifting assembly 4 reaches the lowest position, the hydraulic rod 74 is extended to move the pressing assembly 7. After the pressure roller 72 moves, the sludge cleaning cylinder 12 loses its holding force. At this time, the motor 81 of the winding assembly 8 drives the winding roller 83 to wind up the pull rope 11. Then the pull rope 11 moves the lifting assembly 4 to the highest position, which can then activate the hydraulic rod 74 to drive the pressure roller 72 on the surface of the pressing frame 71 to press the sludge cleaning cylinder 12 again and continue to repeat the sludge cleaning steps.

[0101] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for dredging a pile hole, characterized in that, Include: Base structure (2); Two columns (1); The column (1) is fixedly connected to the upper surface of the base structure (2); Slide rail structure (3); The slide rail structure (3) is arranged below the base structure (2) for placing and horizontally moving the base structure (2); Lifting assembly (4); The lifting assembly (4) moves axially between the two columns (1) and is located on the opposite side of the two columns (1) to slide; Wheel group (6); The inner wall of the wheel group (6) is fixedly connected to one side of the lifting assembly (4), and the inner wall of the wheel group (6) is driven to have a dredging cylinder (12) for dredging treatment of pile hole; Pressing assembly (7); The pressing assembly (7) is installed on one side of the wheel group (6) for clamping the dredging cylinder (12) with the wheel group (6); Drive assembly (5); Fixed on the upper surface of the wheel group (6), for providing power to the wheel group (6); Winding assembly (8); Fixedly connected to the upper surface of the base structure (2), used for controlling the height of the lifting assembly (4) through the pull rope (11); The surface of the pull rope (11) is slidably provided with a pulley (10), the pulley (10) is axially penetrated and rotated with a beam column (9), and the two ends of the beam column (9) are fixedly connected to the opposite sides of the two columns (1); The base structure (2) comprises a connecting plate (21), the two sides of the connecting plate (21) are fixedly connected with two supports (22), the upper surfaces of the two supports (22) are fixedly connected with an installation rack (24) for installing the winding assembly (8), and the lower surfaces of the supports (22) are fixedly connected with a plurality of rollers (23); The lifting assembly (4) comprises a lifting frame (41), a plurality of limiting wheels (42) are arranged on the two sides of the lifting frame (41), the limiting wheels (42) slide on the surface of the column (1), one side of the lifting frame (41) is connected with a clamping seat (46), the surface of the clamping seat (46) is provided with a rotating piece (43), the surface of the rotating piece (43) is provided with a vertical plate (44), the top of the vertical plate (44) is provided with a latch (45), and the surface of the lifting frame (41) is provided with a plurality of insertion holes (47) for fixing the latch (45); The wheel group (6) comprises a fixed frame (61) fixedly connected with the vertical plate (44), a plurality of transmission wheels (64) are rotatably penetrated in the inner wall of the fixed frame (61), the top ends of the transmission wheels (64) are fixedly connected with a planetary gear (65), the planetary gear (65) is arranged above the fixed frame (61), the surfaces of a plurality of planetary gears (65) are jointly meshed with an internal tooth ring (66), the internal tooth ring (66) is installed in the inner wall of the drive assembly (5), the lower surface of the fixed frame (61) is fixedly connected with a lower pushing plate (62), and the inner wall of the fixed frame (61) is fixedly connected with a first ring frame (63); The pressing assembly (7) comprises two hydraulic rods (74) fixedly connected with the lower push plate (62), the telescopic ends of the two hydraulic rods (74) are fixedly connected with group plates (75), the two group plates (75) are fixedly connected with a pressing frame (71) in common, a plurality of pressing wheels (72) are rotatably arranged in the inner wall of the pressing frame (71), and the inner wall of the pressing frame (71) is fixedly connected with a second ring frame (73) embedded with the first ring frame (63).

2. A device for dredging a pile hole according to claim 1, characterized in that Both sides of the stand (1) are fixedly connected with support plates (13), and the lower surfaces of the support plates (13) are fixedly connected to the upper surface of the slide rail structure (3).

3. A device for dredging a pile hole according to claim 1, characterized in that The slide rail structure (3) comprises a limiting seat (31), the lower surface of the limiting seat (31) is fixedly connected with a pressing plate (33) for ground fitting, and the inner wall of the limiting seat (31) is provided with a sliding groove (32) for limiting rolling of the pulley (10).

4. A device for dredging a pile hole according to claim 1, characterized in that The driving assembly (5) comprises a rotary connecting piece (52) penetratingly installed on the surface of the fixed frame (61), the inner wall of the rotary connecting piece (52) is fixedly connected with a driven wheel (53), the surface of the driven wheel (53) is drivingly connected with a driving wheel (55) through a transmission belt (56), the lower portion of the driving wheel (55) is provided with a driver (54) for providing power, the driver (54) is fixedly connected to the surface of the fixed frame (61), and the inner tooth ring (66) is fixedly connected to the bottom of the inner wall of the driven wheel (53).

5. A method of dredging a pile hole using the pile hole dredging apparatus of claim 1, characterized by, The method comprises the following steps: Two slide rail structures (3) are aligned according to the direction of array distribution pile holes, and are respectively laid on both sides of the pile holes according to the specified interval; The base structure (2) is placed above the slide rail structure (3), and the rollers (23) of the base structure (2) are kept in the sliding grooves (32); The motor (81) of the winding assembly (8) is controlled to rotate the winding wheel (83) through the speed reducer (82) to release the pull rope (11), the pull rope (11) rolls on the surface of the pulley (10) to lower the lifting assembly (4) to the lowest position, at this time, the dredging cylinder (12) passes through the driving assembly (5) and is located between the wheel set (6) and the pressing assembly (7); The winding assembly (8) is controlled to move the lifting assembly (4) to the top of the stand (1), and the hydraulic rod (74) is started, the hydraulic rod (74) is retracted to move the pressing frame (71), until the second ring frame (73) is embedded with the first ring frame (63), so that the plurality of transmission wheels (64) and the pressing wheels (72) are matched to clamp the dredging cylinder (12); The driver (54) is started, the driver (54) drives the driving wheel (55) to rotate, the driving wheel (55) rotates to drive the driven wheel (53) to rotate through the transmission belt (56), then the driven wheel (53) rotates under the support of the support plate (51) through the rotary connecting piece (52), the driven wheel (53) rotates to drive the inner tooth ring (66) in the inner wall to rotate, so that the inner tooth ring (66) rotates to drive the plurality of planetary gears (65) meshed with the inner wall to rotate synchronously; At this time the planetary gear (65) with the corresponding transmission wheel (64) rotation, the roller (72) will dredging cylinder (12) pressure holding in the surface of the transmission wheel (64), so that it is driven by the transmission wheel (64) dredging cylinder (12) began to rotate; while the motor (81) drive reducer (82), so that its reducer (82) drive winding wheel (83) will pull rope (11) constantly put out, so that the lifting assembly (4) to slide down in the surface of the column (1), maintain the dredging cylinder (12) constantly rotating down to drill; When the lifting assembly (4) to the lowest position, by extending the hydraulic rod (74) so that its pressure assembly (7) to move, the roller (72) moved after the dredging cylinder (12) lose pressure holding force, at this time the winding assembly (8) of the motor (81) drive will winding wheel (83) will pull rope (11) winding, immediately pull rope (11) will move the lifting assembly (4) to the highest position can start hydraulic rod (74) drive the pressure frame (71) of the surface of the roller (72) will dredging cylinder (12) re pressure holding continue to repeat the dredging steps can.

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