Drill and expand integrated pile machine

Abstract

This invention relates to an integrated drilling and reaming pile driver, comprising a drill rod, a drilling-reaming conversion unit, wing plates, and a drill bit. The drill rod and drill bit are respectively connected to the upper and lower ends of the drilling-reaming conversion unit. Wing plates are spaced along the length of the outer periphery of the drilling-reaming conversion unit. The key feature is that the wing plates are helical wing plates, comprising an upper wing plate and a lower wing plate. The upper end of the upper wing plate is connected to a wing plate sleeve via a wing plate seat. The wing plate sleeve is mounted on the active pipe of the drilling-reaming conversion unit. The lower end of the upper wing plate is hinged to the upper end of the lower wing plate. The lower end of the lower wing plate is fixed to the clutch of the drilling-reaming conversion unit via a wing plate seat. The connection point between the helical wing plate and the upper wing plate seat forms an upper fixed point, and the connection point between the helical wing plate and the lower wing plate seat forms a lower fixed point. This invention features a scientifically designed and reasonable structure, offering advantages such as extended equipment lifespan, reduced soil disturbance, guaranteed pile formation, convenient operation, and ease of implementation. It is a highly innovative integrated drilling and reaming pile driver.

Description

Technical Field

[0001] This invention belongs to the field of engineering machinery technology, specifically a drilling and piling machine that integrates drilling and piling. Background Technology

[0002] The drilling and reaming machine is a specialized construction equipment for bored piles that integrates drilling and reaming. By rotating clockwise and counterclockwise, the angle between the upper and lower reaming arms remains constant while gradually changing, thus completing the drilling and reaming work.

[0003] For example, the patent with publication number CN102535448B discloses a reverse circulation rotary drilling and reaming machine that integrates drilling, reaming, and cleaning. Its upper and lower reaming arms are arranged in a straight line on one side of the drilling and reaming equipment. The rotating drilling and reaming working surface formed by the upper and lower reaming arms is always perpendicular to the foundation soil of the pile hole wall being drilled and reamed. The reaming is achieved by rotating and scraping.

[0004] This method has the following problems:

[0005] 1. Impact on the foundation soil of the pile hole wall: Since the upper and lower reaming arms are set in a straight line on one side of the drilling and reaming equipment, the rotating drilling and reaming working face formed by the upper and lower reaming arms is always perpendicular to the foundation soil of the pile hole wall being drilled and reamed. The reaming is achieved by rotating and scraping, which makes it easy for the drilling and reaming equipment to shake during the rotation of the reaming plate. This shaking inevitably disturbs the foundation soil of the reaming plate.

[0006] 2. Impact on the service life of drilling and reaming equipment and personal safety: Because it disturbs the foundation soil, the reaction force of the foundation soil will aggravate the overall shaking of the drilling and reaming equipment. This abnormal working phenomenon will affect the service life of the drilling and reaming equipment and is very likely to cause mechanical and personal safety accidents.

[0007] 3. Impact on the bearing capacity of piles after pile formation: The disturbed foundation soil reduces the end resistance and frictional resistance of the original soil, leaving hidden dangers for the bearing capacity of the piles.

[0008] 4. Impact on the safety of building use: Pile foundations with hidden defects in load-bearing capacity are prone to abnormal settlement of buildings.

[0009] 5. Limitations on applicability to different pile diameters: In the existing technology, the upper and lower reaming arms are set in a straight line on one side of the drilling and reaming equipment. The inner angle formed by the upper and lower reaming arms must be less than 180 degrees. Otherwise, the reaming action with gradually changing angles cannot be achieved. This results in a large diameter of the entire reaming equipment, which cannot meet the needs of drilling and grouting piles with smaller pile diameters. Summary of the Invention

[0010] The purpose of this invention is to provide a drilling and reaming integrated pile driver with a scientific and reasonable structural design, which extends the service life of the equipment, reduces disturbance to the soil of the pile hole wall, ensures the quality of the pile, is easy to operate, and is easy to implement.

[0011] The technical problem solved by this invention is achieved through the following technical solution:

[0012] A drilling and reaming integrated pile driver includes a drill rod, a drilling and reaming conversion unit, wing plates, and a drill bit. The drill rod and the drill bit are respectively connected to the upper and lower ends of the drilling and reaming conversion unit. Wing plates are arranged at intervals along the length of the outer periphery of the drilling and reaming conversion unit. The wing plate is characterized in that: the wing plate is a helical wing plate, which includes an upper wing plate and a lower wing plate. The upper end of the upper wing plate is connected to the wing plate sleeve through a wing plate seat. The wing plate sleeve is set on the active pipe of the drilling and reaming conversion unit. The lower end of the upper wing plate is hinged to the upper end of the lower wing plate. The lower end of the lower wing plate is fixed to the clutch of the drilling and reaming conversion unit through a wing plate seat. The connection point between the helical wing plate and the upper wing plate seat forms an upper fixed point, and the connection point between the helical wing plate and the lower wing plate seat forms a lower fixed point.

[0013] Furthermore, the upper fixing point of the propeller plate is located to the right of the lower fixing point, and the included angle between the upper fixing point and the lower fixing point of each propeller plate is 180°.

[0014] Furthermore, the screws at the upper and lower fixing points of the propeller plate are parallel to each other on both the front and top view planes.

[0015] Furthermore, the propeller plates are installed on the drilling and reaming conversion section at 120°, but can also be installed at 90°, 72°, or 60°. There are 3 propeller plates at 120°, 4 propeller plates at 90°, 5 propeller plates at 72°, and 6 propeller plates at 60°.

[0016] Furthermore, the upper and lower wing plates are formed with arc surfaces.

[0017] Moreover, the upper and lower wing plates are multifaceted structures formed by several planes.

[0018] Moreover, the drilling and reaming conversion unit includes an active tube, a driven tube, and a clutch. The active tube includes an active tube body, an outer conversion protrusion, and an inner conversion protrusion. A drill rod is connected to the upper end of the active tube body via a flange. Inner conversion protrusions are evenly distributed at intervals on the inner wall of the lower end of the active tube body. Outer conversion protrusions are spaced at intervals on the upper part of the outer wall of the active tube body.

[0019] The driven tube includes a driven tube body and knife-handle-shaped protrusions. Knife-handle-shaped protrusions are evenly distributed at intervals on the outer wall of the driven tube body, with the handle portion of the knife-handle-shaped protrusions facing upwards. A rotating groove is formed between the handle portions of two knife-handle-shaped protrusions, and a lifting groove is formed between the blade portions of two knife-handle-shaped protrusions. The conversion inner protrusion on the driving tube rotates within the rotating groove on the driven tube to achieve drilling and reaming conversion, and the conversion inner protrusion on the driving tube rises and falls within the lifting groove on the driven tube to achieve reaming.

[0020] The clutch is connected to the lower part of the driven tube via a flange.

[0021] Moreover, the wing sleeve includes a sleeve and limiting protrusions spaced apart on the inner wall of the sleeve, with a conversion groove formed between each pair of limiting protrusions, and the conversion outer protrusion on the outer wall of the active tube rotates in the conversion groove.

[0022] Furthermore, it also includes an upper limit ring and a lower limit ring, with an upper limit ring and a lower limit ring respectively provided at the upper and lower ends of the wing sleeve on the outer wall of the active tube.

[0023] Furthermore, the wing plate seat is composed of a base plate, a screw, a pressure plate, and a nut. Base plates are spaced apart on the outer wall of the wing plate sleeve and the outer wall of the clutch. A screw extending horizontally outward is provided on the base plate. The upper wing plate and the lower wing plate are connected to the screw through connecting holes provided on them. A pressure plate is provided on the outside of the upper wing plate and the lower wing plate and passes through the screw. A nut threadedly connected to the screw is provided on the outside of the pressure plate.

[0024] Furthermore, the clutch includes a clutch driving sleeve, a clutch driven sleeve, ball bearings, a driving ratchet, and a driven ratchet. The clutch driven sleeve is rotatably mounted inside the clutch driving sleeve via upper and lower ball bearings. Between the two ball bearings, the driving ratchet and the driven ratchet are installed and meshed with each other. The driving ratchet is located below the driven ratchet and is pinned to the clutch driving sleeve by a locating pin. A vertical key is provided on the outer wall of the clutch driven sleeve, and the driven ratchet moves up and down on the vertical key. The upper end of the clutch driving sleeve is connected to the driven pipe via a driven pipe flange, and the lower end of the clutch driven sleeve is connected to the drill bit via a drill bit flange.

[0025] The advantages and beneficial effects of this invention are as follows:

[0026] 1. This drilling and reaming pile driver, by redesigning the existing straight wing plate structure with upper and lower fixed points on one side into a spiral wing plate structure with upper and lower fixed points at 180 degrees, achieves angled extrusion and cutting of the soil in the pile hole wall, thereby reducing disturbance to the soil in the pile hole wall; the spiral wing plate forms a stable triangular structure, extending the service life of the drilling and reaming pile driver.

[0027] 2. This integrated drilling and reaming pile driver achieves the conversion between drilling and reaming functions through the drilling-reaming conversion unit. When the drill rod drives the drive tube to rotate clockwise, the conversion outer protrusion on the drive tube slides within the conversion groove of the upper wing plate sleeve, while the conversion inner protrusion rotates within the rotation groove and is limited by the handle-shaped protrusion. The driven ratchet engages with the drive ratchet, thus locking the drive tube, driven tube, and drill bit, achieving the drilling function. When the drill rod drives the drive tube to rotate counterclockwise, the conversion outer protrusion on the drive tube disengages from the handle-shaped protrusion and rises and falls at the lifting groove, achieving relative sliding between the drive tube and driven tube. The driven ratchet cannot engage with the drive ratchet, and the drill bit remains anchored in place, achieving the reaming function.

[0028] 3. This drilling and reaming integrated pile driver, by redesigning the existing wing plate seat that is perpendicular to the wing plate sleeve to a wing plate seat that is parallel to the wing plate sleeve, greatly reduces the distance the wing plate seat protrudes from the machine body, reduces the diameter of the drilling and reaming equipment, and meets the usage requirements of smaller diameter cast-in-place piles.

[0029] 4. The present invention has a scientific and reasonable structural design, which has the advantages of extending the service life of the equipment, reducing the disturbance to the soil, ensuring the effect of forming a pile, being convenient to operate, and being easy to implement. It is a highly innovative drilling and expanding pile machine. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention in the drilling state;

[0031] Figure 2 for Figure 1 Top view;

[0032] Figure 3 This is a schematic diagram of another forming method of the propeller plate of the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of the present invention in its expanded state;

[0034] Figure 5 for Figure 4 Top view;

[0035] Figure 6 This is a schematic diagram of the active tube structure of the present invention;

[0036] Figure 7 for Figure 6 Sectional view along axis AA;

[0037] Figure 8 This is a schematic diagram of the driven tube of the present invention;

[0038] Figure 9 for Figure 8 BB-direction sectional view;

[0039] Figure 10 for Figure 8 Enlarged view of part C;

[0040] Figure 11 This is an assembly diagram of the active tube and the driven tube of the present invention in the drilling state;

[0041] Figure 12 This is an assembly diagram of the active tube and the driven tube of the present invention in the expanded disk state;

[0042] Figure 13 This is a schematic diagram of the upper wing plate seat of the present invention;

[0043] Figure 14 This is a schematic diagram of the assembly structure of the upper wing plate seat and the active assembly of the present invention;

[0044] Figure 15 This is a schematic diagram of the structure of the present invention in the drilling state;

[0045] Figure 16 This is a schematic diagram of the structure of the present invention in its expanded state;

[0046] Figure 17 This is a schematic diagram of the clutch structure of the present invention;

[0047] Figure 18 This is a schematic diagram of the driven ratchet of the present invention;

[0048] Figure 19 for Figure 18 Top view;

[0049] Figure 20 This is a schematic diagram of the active ratchet of the present invention;

[0050] Figure 21 for Figure 20 Top view;

[0051] Figure 22 The diagrams are for comparison of the expansion principle of the present invention and the prior art (a is the present application, b is the prior art);

[0052] Figure 23 This is a schematic diagram of the structure of the pile formed by the present invention.

[0053] Figure Labels

[0054] 1-Active tube, 2-Wing plate seat, 3-Wing plate sleeve, 4-Upper wing plate, 5-Driven tube, 6-Hinge, 7-Lower wing plate, 8-Clutch, 9-Sheet metal, 10-Active tube body, 11-Conversion outer protrusion, 12-Conversion inner protrusion, 13-Rotating groove, 14-Handle-shaped protrusion, 15-Lifting groove, 16-Handle part, 17-Blade part, 18-Sealing ring, 19-Base plate, 20-Screw, 21-Pressure plate, 22-Limiting protrusion, 23-Conversion groove, 24-Driven tube flange, 25-Ball bearing, 26-Vertical key, 27-Driven ratchet, 28-Clutch active sleeve, 29-Meshing surface, 30-Pin hole, 31-Drill bit flange, 32-Active ratchet, 33-Clutch driven sleeve, 34-Upper limit ring, 35-Lower limit ring, 36-Pile hole, 37-Disc cavity. Detailed Implementation

[0055] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not limiting, and should not be used to limit the scope of protection of the present invention.

[0056] A drilling and reaming integrated pile driver includes a drill rod, a drilling and reaming conversion unit, a wing plate, and a drill bit. The drilling and reaming conversion unit is used to switch between drilling and reaming functions, the wing plate is used for reaming operations, the drill bit is used for drilling, and the drill rod is used to drive the drilling and reaming conversion unit.

[0057] Drill rods and drill bits are connected to the upper and lower ends of the drill-reamer conversion section, respectively. Wing plates are spaced along the length of the outer periphery of the conversion section. The innovation lies in the fact that these wing plates are helical wing plates, comprising an upper wing plate 4 and a lower wing plate 7. The upper end of the upper wing plate is connected to a wing plate sleeve 3 via a wing plate seat 2. The wing plate sleeve is mounted on the active pipe 1 of the drill-reamer conversion section. The lower end of the upper wing plate is hinged to the upper end of the lower wing plate via a hinge 6. The lower end of the lower wing plate is fixed to the clutch 8 of the drill-reamer conversion section via a wing plate seat. The connection point between the helical wing plate and the upper wing plate seat forms the upper fixed point, and the connection point between the helical wing plate and the lower wing plate seat forms the lower fixed point. The helical wing plate configuration changes the previous vertical scraping of the soil to a compression cutting at a certain angle. This compression cutting method involves layer-by-layer compression cutting of the soil, reducing disturbance to the soil and ensuring the quality of pile formation.

[0058] The upper and lower wing plates can be formed in two ways: one is that the upper and lower wing plates can be arc-shaped structures; the other is that the upper and lower wing plates can be multi-faceted structures formed by several planes.

[0059] The spiral blades are mounted on the drilling-expanding conversion unit at 120°, but can also be mounted at 90°, 72°, or 60°. When mounted at 120°, there are 3 spiral blades; at 90°, 4; at 72°, 5; and at 60°, 6. The angle between the upper and lower fixing points of each spiral blade is 180°, ensuring that each spiral blade forms a stable triangular structure during expansion, achieving angular compression and cutting of the soil in the pile hole wall, thus improving the expansion quality. This drilling-expanding integrated pile driver rotates clockwise for drilling and counterclockwise for expansion. Therefore, to ensure smooth expansion, the upper fixing point of the blade must be located to the right of the lower fixing point.

[0060] The drilling and reaming conversion unit includes a drive tube, a driven tube 5, and a clutch. The drive tube includes a drive tube body 10, an outer conversion protrusion 11, and an inner conversion protrusion 12. A drill rod is connected to the upper end of the drive tube body via a flange. Inner conversion protrusions are evenly distributed at intervals on the inner wall of the lower end of the drive tube body. Outer conversion protrusions are spaced at intervals on the upper part of the outer wall of the drive tube body. The interval between each pair of outer conversion protrusions and inner conversion protrusions is 120 degrees.

[0061] The driven tube includes a driven tube body and a handle-shaped protrusion 14. The handle-shaped protrusions are evenly distributed on the outer wall of the driven tube body. The handle portion 16 of the handle-shaped protrusions is set upward. The area between the handle portions of two handle-shaped protrusions forms a rotating groove 13, and the area between the blade portions 17 of two handle-shaped protrusions forms a lifting groove 15. The conversion inner protrusion on the driving tube rotates in the rotating groove on the driven tube to realize the drilling and reaming conversion. The conversion inner protrusion on the driving tube rises and falls in the lifting groove on the driven tube to realize the reaming. The rotating groove is 80 degrees and the lifting groove is 40 degrees.

[0062] The clutch is connected to the lower part of the driven tube via a flange.

[0063] A sealing ring 18 is provided on the upper outer periphery of the driven tube, and the sealing ring is fitted with the inner wall of the driving tube for sealing.

[0064] The wing sleeve includes a sleeve 18 and limiting protrusions 22 spaced apart on the inner wall of the sleeve. A conversion groove 23 is formed between each pair of limiting protrusions, and the conversion outer protrusion on the outer wall of the active tube rotates in the conversion groove.

[0065] To prevent the wing sleeve from detaching from the active tube, an upper limit ring 34 and a lower limit ring 35 are designed. The upper limit ring and the lower limit ring are respectively provided at the upper and lower ends of the wing sleeve on the outer wall of the active tube.

[0066] The wing plate seat is composed of a base plate 19, a screw 20, a pressure plate 21, and a nut. The base plate is provided at intervals on the outer wall of the wing plate sleeve and the outer wall of the clutch. The screw extends horizontally outward on the base plate. The upper wing plate and the lower wing plate are connected to the screw through the connecting holes provided on them. The pressure plate is provided on the outside of the upper wing plate and the lower wing plate and passes through the screw. The nut is threaded to the screw on the outside of the pressure plate.

[0067] The wing plate seat of the present invention is a structure that is parallel to the equipment body. This structure ensures that after the upper and lower wing plates are installed, the ends of the upper and lower wing plates are also parallel to the equipment body. The parallel structure can shorten the distance between the wing plate and the equipment body, thereby reducing the diameter of the drilling and reaming equipment and meeting the needs of using 36-diameter cast-in-place piles with smaller pile holes.

[0068] In addition, the upper and lower wing plates are connected at an angle, which reduces the initial angle between the upper and lower wing plates compared with the existing technology. Therefore, it is easier to open and close the upper and lower wing plates and is more conducive to the functional conversion of drilling and expansion.

[0069] The clutch includes a clutch driving sleeve 28, a clutch driven sleeve 33, ball bearings 25, a driving ratchet 32, and a driven ratchet 27. The clutch driven sleeve is rotatably mounted inside the clutch driving sleeve via upper and lower ball bearings. Between the two ball bearings are meshing driving and driven ratchets, forming a meshing surface 29. The driving ratchet is located below the driven ratchet and is pinned to the clutch driving sleeve by a locating pin. The clutch driving sleeve has a pin hole 30 for mounting the locating pin, and a vertical key 26 is provided on the outer wall of the clutch driven sleeve, allowing the driven ratchet to move up and down on the vertical key. The upper end of the clutch driving sleeve is connected to the driven pipe via a driven pipe flange 24, and the lower end of the clutch driven sleeve is connected to the drill bit via a drill bit flange 31.

[0070] The drilling and reaming integrated pile driver of the present invention has two working states, namely drilling state and reaming state, both of which are completed by driving the drilling and reaming conversion unit through the drill rod.

[0071] like Figure 1-2 The diagram shows the drilling state of the present invention, and its working principle is as follows:

[0072] As the drill rod rotates clockwise, the drive tube and driven tube are at their maximum extension, with the upper and lower flanges fully extended. At this point, the inner convex protrusion of the drive tube rotates laterally from the rotating slot and onto the blade-shaped protrusion of the driven tube. The side end of the inner convex protrusion presses against the blade-shaped protrusion, preventing the drive tube from extending or retracting on the driven tube. The drive and driven tubes together apply pressure and rotational power to the drill bit, causing it to drill downwards. During drilling, the drive and driven ratchet wheels of the clutch remain engaged and rotate synchronously, driving the drill bit to rotate synchronously.

[0073] When drilling reaches the position for expanding the disk, drilling is complete. The drill rod rotates counterclockwise to begin the disk expanding (expanding disk cavity 37) operation.

[0074] The inner protrusion of the active tube rotates counterclockwise in the rotating groove, and then rises and falls in the lifting groove. The upper wing plate gradually expands outwards as the active tube extends and retracts on the driven tube. The upper and lower wing plates together form a triangular drilling and reaming working surface, completing the reaming operation on the pile hole wall while rotating. During the reaming process, the active and driven ratchet wheels of the clutch remain disengaged, preventing the active tube from driving the drill bit. The drill bit remains anchored in place, acting as a fulcrum to ensure the stability of the reaming operation.

[0075] During the drilling and reaming process, this integrated drilling and reaming pile driver removes the extruded and cut soil from the pile hole through mud circulation. This cleaning function is a standard feature of every pile driver, so it will not be described in detail here.

[0076] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A drilling and reaming integrated pile driver, comprising a drill rod, a drilling-reaming conversion section, wing plates, and a drill bit, wherein the drill rod and the drill bit are respectively connected to the upper and lower ends of the drilling-reaming conversion section, and wing plates are provided at intervals along the length of the outer periphery of the drilling-reaming conversion section, characterized in that: The wing plate is a spiral wing plate, which includes an upper wing plate and a lower wing plate. The upper end of the upper wing plate is connected to the wing plate sleeve through a wing plate seat. The wing plate sleeve is set on the active pipe of the drilling and reaming conversion unit. The lower end of the upper wing plate is hinged to the upper end of the lower wing plate. The lower end of the lower wing plate is fixed to the clutch of the drilling and reaming conversion unit through a wing plate seat. The connection point between the spiral wing plate and the upper wing plate seat forms an upper fixed point, and the connection point between the spiral wing plate and the lower wing plate seat forms a lower fixed point. The upper fixing point of the propeller is located to the right of the lower fixing point, and the included angle between the upper fixing point and the lower fixing point of each propeller is 180°. The screws at the upper and lower fixing points of the propeller plate and the hinge axis are parallel to each other in both the front and top views. The drilling and reaming conversion unit includes an active tube, a driven tube, and a clutch. The active tube includes an active tube body, an outer conversion protrusion, and an inner conversion protrusion. A drill rod is connected to the upper end of the active tube body via a flange. Inner conversion protrusions are evenly distributed at intervals on the inner wall of the lower end of the active tube body. Outer conversion protrusions are spaced at intervals on the upper part of the outer wall of the active tube body. The driven tube includes a driven tube body and knife-handle-shaped protrusions. Knife-handle-shaped protrusions are evenly distributed at intervals on the outer wall of the driven tube body, with the handle portion of the knife-handle-shaped protrusions facing upwards. A rotating groove is formed between the handle portions of two knife-handle-shaped protrusions, and a lifting groove is formed between the blade portions of two knife-handle-shaped protrusions. The conversion inner protrusion on the driving tube rotates within the rotating groove on the driven tube to achieve drilling and reaming conversion, and the conversion inner protrusion on the driving tube rises and falls within the lifting groove on the driven tube to achieve reaming. The clutch is connected to the lower part of the driven tube via a flange.

2. The drilling and reaming integrated pile driver according to claim 1, characterized in that: The aforementioned spiral blades are 3-6 in number, evenly distributed at circumferential intervals on the drilling-reaming conversion section.

3. The drilling and reaming integrated pile driver according to claim 1, characterized in that: The upper and lower wing plates are formed by arc surfaces; or the upper and lower wing plates are multi-faceted structures formed by several planes.

4. The drilling and reaming integrated pile driver according to claim 1, characterized in that: The wing sleeve includes a sleeve and limiting protrusions spaced apart on the inner wall of the sleeve, with a conversion groove formed between each pair of limiting protrusions, and the conversion outer protrusion on the outer wall of the active tube rotates within the conversion groove.

5. The drilling and reaming integrated pile driver according to claim 1, characterized in that: It also includes an upper limit ring and a lower limit ring, with an upper limit ring and a lower limit ring respectively provided at the upper and lower ends of the wing sleeve on the outer wall of the active tube.

6. The drilling and reaming integrated pile driver according to claim 1, characterized in that: The wing plate seat consists of a base plate, a screw, a pressure plate, and a nut. Base plates are spaced apart on the outer wall of the wing plate sleeve and the outer wall of the clutch. A screw extending horizontally outward is provided on the base plate. The upper and lower wing plates are connected to the screw through connecting holes provided on them. A pressure plate is provided on the outer side of the upper and lower wing plates and passes through the screw. A nut threaded onto the screw is provided on the outer side of the pressure plate.

7. The drilling and reaming integrated pile driver according to claim 1, characterized in that: The clutch includes a clutch driving sleeve, a clutch driven sleeve, ball bearings, a driving ratchet, and a driven ratchet. The clutch driven sleeve is rotatably mounted inside the clutch driving sleeve via upper and lower ball bearings. Between the two ball bearings are meshing driving and driven ratchets. The driving ratchet is located below the driven ratchet and is pinned to the clutch driving sleeve via a locating pin. A vertical key is provided on the outer wall of the clutch driven sleeve, allowing the driven ratchet to move up and down on this key. The upper end of the clutch driving sleeve is connected to the driven pipe via a driven pipe flange, and the lower end of the clutch driven sleeve is connected to the drill bit via a drill bit flange.

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