Drilling and piling integrated rotary drilling rig and construction method thereof

Abstract

The application provides a drilling and piling integrated rotary drilling rig and a construction method thereof, and belongs to the technical field of engineering equipment, and comprises a rotary drilling machine body and a rotating rod, the rotating rod is rotatably and slidably arranged on the rotary drilling machine body, and further comprises a drill seat, a drill sleeve, a piling plate, a driving piece, a center rod, a support, a drill bit and a driving assembly, the drill seat is detachably connected to the end of the rotating rod, the drill sleeve is slidably sleeved on the drill seat, the piling plate is in the shape of a sector and is uniformly provided with a plurality of pieces along the circumference of the drill sleeve, and is hingedly arranged on the drill sleeve, when the drill sleeve slides out of the drill seat to cover the drill bit, the plurality of pieces of the piling plate are automatically folded to form a plate shape and are used for piling, and when the drill sleeve slides back into the drill seat, the plurality of pieces of the piling plate are automatically unfolded to abut against the outer wall of the drill seat, and the drill bit is arranged on both sides of the support and is used for drilling. The application has the advantages of reducing construction cost and facilitating drilling and piling.

Description

Technical Field

[0001] This invention relates to the field of engineering equipment technology, and more specifically, to a rotary drilling rig that integrates drilling and piling and its construction method. Background Technology

[0002] Rotary drilling rigs are comprehensive drilling machines that can operate on various geological formations. They feature fast drilling speed, low pollution, and high mobility. Short auger bits are used for dry excavation, while rotary bits can be used for wet excavation with mud slurry support. Rotary drilling rigs can be used with hammer drills to break up hard strata before drilling. When used with reaming tools, they can be used for hole enlargement at the bottom of the hole. Rotary drilling rigs use multi-layer telescopic drill rods, reducing drilling auxiliary time, lowering labor intensity, and eliminating the need for mud circulation and slag removal, thus saving costs. They are particularly suitable for foundation construction in urban development.

[0003] In modern engineering construction, drilling and piling are almost always involved. Drilling requires rotary drilling rigs, and piling requires piling machines. However, using both types of equipment at the same time is very costly. To reduce construction costs, we propose an integrated rotary drilling rig for drilling and piling and its construction method. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated rotary drilling rig for drilling and piling, which reduces construction costs and facilitates drilling and piling.

[0005] In a first aspect, the embodiments of the present invention are achieved through the following technical solutions: a rotary drilling rig integrating drilling and piling, comprising a rotary drilling rig body and a rotating rod, wherein the rotating rod is rotatably and slidably disposed on the rotary drilling rig body, characterized in that: it further comprises a drill base, a drill sleeve, a piling plate, a driving component, a center rod, a support, a drill bit, and a driving assembly; The drill base is detachably connected to the end of the rotating rod. The drill sleeve is slidably sleeved on the drill base. The piling plate is fan-shaped and has multiple pieces evenly arranged along the circumference of the drill sleeve. All of them are hinged on the drill sleeve. When the drill sleeve slides outward along the drill base to cover the drill bit, the multiple piling plates automatically retract to form a plate shape and are used for piling. At the same time, when the drill sleeve slides back along the drill base, it automatically unfolds and abuts against the outer wall of the drill base. The driving component is arranged on the drill base and is used to drive the drill sleeve to extend or retract and then fix it to any moved position. The central rod is coaxial with the drill base and is rotatably slidably mounted on the drill base. The support is mounted at the end of the central rod. The drill bit is mounted on both sides of the support and is used for drilling. The drive assembly is used to drive the central rod to rotate and simultaneously drive the central rod to slide back and forth along its own length.

[0006] Furthermore, the driving component includes rodless cylinders, with multiple rodless cylinders arranged circumferentially along the drill base and embedded within the drill base. The output ends of the multiple rodless cylinders are all fixedly connected to the drill sleeve. A torsion spring is provided at the hinge point between the piling plate and the drill sleeve. The torsion spring is used to continuously drive the piling plate to rotate and retract. A support plate is fixedly provided on the inner wall of the drill sleeve corresponding to the position of each piling plate. The support plate is used to support the piling plate when it rotates and retracts.

[0007] Furthermore, the drive assembly includes a drive motor, a first gear, a second gear, and a guide rod. A cavity is formed inside the drill bit. The drive motor is fixedly mounted inside the cavity of the drill bit. The first gear is coaxially fixedly sleeved on the shaft of the drive motor, and the second gear is coaxially fixedly sleeved on the central rod. The first gear and the second gear mesh with each other. The thickness of the second gear is greater than the maximum reciprocating sliding distance of the central rod along its own length. A corrugated groove is formed circumferentially inside the cavity of the drill bit. The corrugated groove is continuously arranged. One end of the guide rod is fixedly connected to the central rod, and the other end extends into the corrugated groove and slides against the side wall of the corrugated groove. The guide rod and the central rod are arranged perpendicular to each other.

[0008] Furthermore, the support is hinged to the central rod, and the bottom wall of the drill base is coaxially formed with the central rod and has an annular groove. A rotating ring is rotatably connected in the annular groove, and a support rod is fixedly mounted on the rotating ring. A limiting groove is formed on the side wall of the support along the length direction of the support, and a limiting block is slidably mounted in the limiting groove. The end of the support rod away from the rotating ring is hinged to the limiting block, and its hinge axis is parallel to the hinge axis between the support and the central rod.

[0009] Furthermore, the drill bit includes a cutting blade and a tool holder. Multiple cutting blades are evenly and fixedly arranged on the tool holder. First cylinders are embedded on both sides of the support. Each first cylinder corresponds to a tool holder. A first motor is embedded in the tool holder. The output shaft of the first motor is coaxially and fixedly connected to the output shaft of the first cylinder.

[0010] Furthermore, the bottom wall of the support is provided in a pointed conical shape.

[0011] Secondly, embodiments of the present invention are achieved through the following technical solution: a construction method for an integrated rotary drilling rig for drilling and piling, further comprising: S1: Fix the drill base to the end of the rotating rod of the rotary drilling rig body, and move the rotary drilling rig body to the location where work is required; S2: When piling is required, multiple rodless cylinders are activated simultaneously to drive the drill sleeve to slide along the drill base and extend to cover the drill bit. Under the action of the torsion spring, multiple piling plates will automatically retract to form a plate shape. At this time, the rotating rod of the rotary drilling machine body is activated to move down, and the plate-shaped plane formed by multiple piling plates will act on the pile foundation at the same time, and piling can be carried out. S3: When drilling is required, multiple rodless cylinders are activated simultaneously to drive the drill sleeve to slide and retract along the drill base. Multiple piling plates will abut against the outer wall of the drill base and unfold, thus exposing the drill bit. Then, the drive motor is activated to drive the first gear to rotate, thereby driving the second gear, the center rod, and the support to rotate. During this process, the first motor is activated to drive the drill bit to rotate, and the first cylinder drives the drill bit to extend outward to increase the drilling diameter. During this process, the support will not only rotate and move up and down, but also swing along the hinge axis between the support and the center rod, thus completing the drilling preparation. S4: Restart the rotary drilling rig and rotate the boom, moving it downwards to finally complete the drilling.

[0012] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects: 1. This invention simultaneously activates multiple rodless cylinders to drive the drill sleeve to slide outward along the drill base and cover the drill bit. Under the action of the torsion spring, multiple piling plates automatically retract to form a plate shape. At this time, the rotary drilling rig body's rotating rod moves downward, and the plate-shaped plane formed by the multiple piling plates simultaneously acts on the pile foundation, thus enabling piling. Then, simultaneously activating multiple rodless cylinders again drives the drill sleeve to slide back along the drill base, and the multiple piling plates will abut against the outer wall of the drill base and unfold, thereby exposing the drill bit. Then, the drive motor is activated to drive the first gear to rotate, thereby driving the second gear, the central rod, and the support to rotate. During this process, the second... A motor drives the drill bit to rotate, and the first cylinder drives the drill bit to extend outward to increase the drilling diameter. During this process, the support not only rotates and moves up and down, but also swings along the hinge axis between the support and the center rod to complete the drilling preparation. Then, the rotary drilling machine body's rotating rod is started to rotate and move down, which can realize drilling. In this way, the rotary drilling machine not only has the function of drilling, but also the function of piling. The operation is very simple and convenient, reducing the need for a dedicated piling machine, thereby reducing construction costs. Furthermore, after the drill sleeve covers the drill bit, it can protect the drill bit during the piling process.

[0013] 2. By setting up structures such as corrugated grooves, guide rods, and support rods, the drill bit not only moves up and down reciprocally during the rotation of the central rod driven by the drive motor, but also swings back and forth along the support rod to improve drilling efficiency. At the same time, the first cylinder drives the drill bit to extend outward, which can change the diameter of the drill hole and improve the applicability of the drill bit. Furthermore, the first motor drives the drill bit to rotate, which also improves drilling efficiency and facilitates drilling. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the overall structure of the rotary drilling rig for drilling and piling provided by the present invention; Figure 2 This is a schematic diagram illustrating the structure of the piling plate after it has been folded together to form a plate shape, according to the present invention. Figure 3 This is an exploded structural diagram illustrating the unfolded structure of the support plate and piling plate according to the present invention. Figure 4 This is a schematic diagram illustrating the internal structure of the drill base for this invention; Figure 5 This is a structural schematic diagram of the present invention used to separately demonstrate the drive assembly, the blade, and the support.

[0016] Icons: 1-Rotary drilling rig body, 11-Rotor, 2-Drill base, 20-Cavity, 21-Drill sleeve, 22-Pile plate, 221-Hinge seat, 222-Torsion spring, 23-Drive component, 231-Rodless cylinder, 24-Socket, 25-Pin, 26-Receiving plate, 27-Corrugated groove, 28-Ring groove, 3-Center rod, 4-Support, 41-Limit groove, 42-Limit block, 43-Bellboard, 44-First cylinder, 5-Drill cutter, 51-Instrument, 52-Cut holder, 521-First motor, 6-Drive assembly, 61-Drive motor, 62-First gear, 63-Second gear, 64-Guide rod, 641-Roller, 7-Rotating ring, 71-Support rod. Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention. Example

[0019] The following description, in conjunction with specific embodiments, provides further details. Figures 1-5 As shown, this invention is an integrated rotary drilling rig for drilling and piling, including a rotary drilling rig body 1, a rotating rod 11, the rotating rod 11 being rotatably and slidably mounted on the rotary drilling rig body 1 (this device is prior art and will not be described in detail), and also including a drill base 2, a drill sleeve 21, a piling plate 22, a drive component 23, a center rod 3, a support 4, a drill bit 5, and a drive assembly 6; the drill base 2 is cylindrical, and a socket 24 is fixedly welded to the top of the drill base 2. The socket 24 is square and detachably connected to the end of the rotating rod 11 via a pin 25. The drill sleeve 21 is annular and is slidably mounted on the drill base. The piling plate 22 is fan-shaped and has 20 pieces evenly arranged along the circumference of the drill sleeve 21. All of them are hinged to the drill sleeve 21 through the hinge seat 221. The hinge axis is tangent to the outer wall of the drill sleeve 21. When the drill sleeve 21 slides outward along the drill base 2 to cover the drill bit 5, the multiple piling plates 22 automatically retract to form a plate shape and are used for piling. At the same time, when the drill sleeve 21 slides back along the drill base 2, it automatically unfolds and abuts against the outer wall of the drill base 2. The driving component 23 is installed on the drill base 2 and is used to drive the drill sleeve 21 to extend or retract and then fix it to any moved position. The center rod 3 is coaxial with the drill base 2 and rotatably mounted on the drill base 2. At the same time, the center rod 3 can slide along the length direction of the drill base 2. The support 4 is mounted on the end of the center rod 3. The bottom wall of the support 4 is set in a pointed cone shape. The pointed cone-shaped bottom wall of the support 4 can play the role of drilling. The drill bit 5 is set on both sides of the support 4 and is used for drilling. The drive assembly 6 is used to drive the center rod 3 to rotate and at the same time drive the center rod 3 to slide back and forth along its own length direction.

[0020] Reference Figure 2 , 3 The driving component 23 includes rodless cylinders 231. Two rodless cylinders 231 are arranged around the circumference of the drill base 2 and embedded in the drill base 2. The output ends of multiple rodless cylinders 231 are fixedly connected to the drill sleeve 21. Each piling plate 22 and the hinge seat 221 are equipped with torsion springs 222. The torsion springs 222 are used to continuously drive the piling plate 22 to rotate and retract. One end of the torsion spring 222 is fixedly connected to the hinge seat 221, and the other end is fixedly connected to the piling plate 22. A support plate 26 is fixedly welded to the inner wall of the drill sleeve 21 at the position corresponding to each piling plate 22. The support plate 26 is used to support the piling plate 22 when it rotates and retracts.

[0021] Reference Figure 4 , 5The drive assembly 6 includes a drive motor 61, a first gear 62, a second gear 63, and a guide rod 64. A cavity 20 is formed inside the drill base 2. The cavity 20 has a circular cross-section and is coaxially arranged with the drill base 2. The drive motor 61 is fixedly installed inside the cavity 20 of the drill base 2. The first gear 62 is coaxially fixedly sleeved on the rotating shaft of the drive motor 61, and the second gear 63 is coaxially fixedly sleeved on the central rod 3. The first gear 62 and the second gear 63 mesh with each other. The thickness of the second gear 63 is greater than the maximum reciprocating sliding distance of the central rod 3 along its own length. During the reciprocating movement of the central rod 3, the first gear 62 and the second gear 63 will not disengage, ensuring the normal rotation of the central rod 3. The inner circumferential edge of the drill bit 5 is provided with a corrugated groove 27. The cross-section of the corrugated groove 27 is 'T' shaped and the corrugated groove 27 is continuously arranged. Two guide rods 64 are installed and symmetrically arranged on both sides of the central rod 3. One end of the guide rod 64 is fixedly welded to the central rod 3. The end of the guide rod 64 away from the central rod 3 is rotatably mounted with a roller 641. The roller 641 is embedded in the 'T' shaped groove to prevent the guide rod 64 from disengaging from the corrugated groove 27. At the same time, the roller 641 can also play a guiding role. The guide rod 64 and the central rod 3 are arranged perpendicular to each other. Due to the continuous guiding effect of the crests and troughs of the corrugated groove 27, the central rod 3 is driven to move back and forth by the corrugated groove 27 while rotating, so that the drill bit 5 can better perform the drilling function.

[0022] Reference Figure 3 , 4 The support 4 is hinged to the center rod 3. The bottom wall of the drill base 2 is coaxially formed with the center rod 3 and has an annular groove 28. The cross-section of the annular groove 28 is 'T' shaped. A rotating ring 7 is rotatably connected in the annular groove 28, which restricts the rotation of the rotating ring 7 within the annular groove 28 to prevent the rotating ring 7 from detaching. A support rod 71 is fixedly welded to the rotating ring 7. Limiting grooves 41 are symmetrically formed on both side walls of the support 4 along the length of the support 4. The cross-section of the limiting grooves 41 is 'T' shaped. Limiting blocks 42 are slidably installed in the limiting grooves 41. The end of the support rod 71 away from the rotating ring 7 is connected to the limiting block 42. 2. The two parts are hinged to each other, and the hinge axis is parallel to the hinge axis of the support 4 and the center rod 3. Through the hinge between the support rod 71 and the limiting block 42, the support 4 will swing along the hinge point between the support 4 and the center rod 3 during the reciprocating movement of the center rod 3, which facilitates drilling and improves drilling efficiency. At the same time, the groove of the limiting groove 41 is equipped with a bellows plate 43. The bellows plate 43 not only has a folding function, but also ensures that the limiting block 42 can slide normally in the limiting groove 41, and can prevent gravel, soil and other debris from entering the limiting groove 41 and affecting the normal swing of the support 4.

[0023] Reference Figure 4 , 5The drill bit 5 includes blades 51 and a tool holder 52. Multiple blades 51 are welded and evenly fixed on the tool holder 52. A first cylinder 44 is embedded on both sides of the support 4. The first cylinder 44 corresponds to the tool holder 52 one by one. A first motor 521 is embedded in the tool holder 52. The output shaft of the first motor 521 is coaxially and fixedly connected to the output shaft of the first cylinder 44. The extension length of the drill bit 5 can be adjusted by extending and retracting the first cylinder 44, increasing the size of the hole and improving its adaptability. At the same time, the rotation of the first motor 521 can make the drill bit 5 rotate, improving the overall drilling capacity.

[0024] In addition, a construction method for an integrated rotary drilling rig for drilling and piling also includes: S1: Fix the drill base 2 to the end of the rotating rod 11 of the rotary drilling machine body 1, and move the rotary drilling machine body 1 to the location where work is required; S2: When piling is required, multiple rodless cylinders 231 are activated simultaneously to drive the drill sleeve 21 to slide outward along the drill base 2 and cover the drill bit 5. Under the action of the torsion spring 222, multiple piling plates 22 will automatically retract to form a plate shape. At this time, the rotating rod 11 of the rotary drilling machine body 1 is activated to move down, and the plate-shaped plane formed by multiple piling plates 22 will act on the pile foundation at the same time, and piling can be carried out. S3: When drilling is required, multiple rodless cylinders 231 are activated simultaneously to drive the drill sleeve 21 to slide and retract along the drill base 2. Multiple piling plates 22 will abut against the outer wall of the drill base 2 and unfold, thereby exposing the drill bit 5. Then, the drive motor 61 is activated to drive the first gear 62 to rotate, thereby driving the second gear 63, the central rod 3, and the support 4 to rotate. During this process, the first motor 521 is activated to drive the drill bit 5 to rotate. The first cylinder 44 drives the drill bit 5 to extend outward to increase the drilling diameter. During this process, the support 4 will not only rotate and move up and down, but also swing along the hinge axis between the support 4 and the central rod 3, thus completing the drilling preparation. S4: Restart the rotary drilling rig body 1 to rotate the rotating rod 11 and move it down to finally achieve drilling.

[0025] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A rotary drilling rig integrating drilling and piling, comprising a rotary drilling rig body (1) and a rotating rod (11), wherein the rotating rod (11) is rotatably and slidably mounted on the rotary drilling rig body (1), characterized in that: It also includes a drill base (2), a drill sleeve (21), a piling plate (22), a drive unit (23), a center rod (3), a support (4), a drill bit (5), and a drive assembly (6); The drill base (2) is detachably connected to the end of the rotating rod (11). The drill sleeve (21) is slidably sleeved on the drill base (2). The pile driving plate (22) is fan-shaped and has multiple pieces evenly arranged along the circumference of the drill sleeve (21), and all of them are hinged on the drill sleeve (21). When the drill sleeve (21) slides outward along the drill base (2) to cover the drill bit (5), the multiple pile driving plates (22) automatically retract to form a plate shape and are used for pile driving. At the same time, when the drill sleeve (21) slides back along the drill base (2), it automatically unfolds and abuts against the outer wall of the drill base (2). The driving member (23) is set on the drill base (2) and is used to drive the drill sleeve (21) to extend or retract and then fix it to any moved position. The central rod (3) is coaxial with the drill base (2) and is rotatably slidably mounted on the drill base (2). The support (4) is mounted at the end of the central rod (3). The drill bit (5) is mounted on both sides of the support (4) and is used for drilling. The driving assembly (6) is used to drive the central rod (3) to rotate and simultaneously drive the central rod (3) to slide back and forth along its own length. The driving component (23) includes rodless cylinders (231). Multiple rodless cylinders (231) are arranged around the drill base (2) and embedded in the drill base (2). The output ends of the multiple rodless cylinders (231) are fixedly connected to the drill sleeve (21). A torsion spring (222) is provided at the hinge of the piling plate (22) and the drill sleeve (21). The torsion spring (222) is used to continuously drive the piling plate (22) to rotate and retract. A support plate (26) is fixedly provided on the inner wall of the drill sleeve (21) at the position corresponding to each piling plate (22). The support plate (26) is used to support the piling plate (22) when it rotates and retracts. The drive assembly (6) includes a drive motor (61), a first gear (62), a second gear (63), and a guide rod (64). A cavity (20) is provided inside the drill base (2). The drive motor (61) is fixedly installed inside the cavity (20) of the drill base (2). The first gear (62) is coaxially fixedly sleeved on the rotating shaft of the drive motor (61), and the second gear (63) is coaxially fixedly sleeved on the central rod (3). The first gear (62) and the second gear (64) are connected... 3) They mesh with each other. The thickness of the second gear (63) is greater than the maximum distance that the central rod (3) slides back and forth along its own length. The cavity (20) of the drill base (2) is provided with a corrugated groove (27) along the circumferential direction. The corrugated groove (27) is continuously arranged. One end of the guide rod (64) is fixedly connected to the central rod (3), and the other end extends into the corrugated groove (27) and slides with the side wall of the corrugated groove (27). The guide rod (64) and the central rod (3) are arranged perpendicular to each other.

2. The rotary drilling rig for integrated drilling and piling as described in claim 1, characterized in that: The support (4) is hinged on the central rod (3). The bottom wall of the drill base (2) is coaxially provided with an annular groove (28) and the central rod (3). A rotating ring (7) is rotatably connected in the annular groove (28). A support rod (71) is fixedly provided on the rotating ring (7). A limiting groove (41) is provided on the side wall of the support (4) along the length direction of the support (4). A limiting block (42) is slidably provided in the limiting groove (41). The end of the support rod (71) away from the rotating ring (7) is hinged to the limiting block (42). Its hinge axis is parallel to the hinge axis of the support (4) and the central rod (3).

3. The rotary drilling rig for integrated drilling and piling as described in claim 2, characterized in that: The drill bit (5) includes a blade (51) and a tool holder (52). Multiple blades (51) are evenly and fixedly arranged on the tool holder (52). A first cylinder (44) is embedded on both sides of the support (4). The first cylinder (44) corresponds to the tool holder (52) one by one. A first motor (521) is embedded in the tool holder (52). The output shaft of the first motor (521) is coaxially and fixedly connected to the output shaft of the first cylinder (44).

4. The rotary drilling rig for integrated drilling and piling as described in claim 3, characterized in that: The bottom wall of the support (4) is set in a pointed cone shape.

5. The construction method of the integrated rotary drilling rig for drilling and piling as described in claim 4, characterized in that: Also includes: S1: Fix the drill base (2) to the end of the rotating rod (11) of the rotary drilling machine body (1), and move the rotary drilling machine body (1) to the location where work is required; S2: When piling is required, multiple rodless cylinders (231) are activated simultaneously to drive the drill sleeve (21) to slide outward along the drill base (2) to cover the drill bit (5). Under the action of the torsion spring (222), multiple piling plates (22) will automatically retract to form a plate shape. At this time, the rotating rod (11) of the rotary drilling machine body (1) is activated to move down, and the plate-shaped plane formed by multiple piling plates (22) will act on the pile foundation at the same time, so that piling can be carried out. S3: When drilling is required, multiple rodless cylinders (231) are activated simultaneously to drive the drill sleeve (21) to slide and retract along the drill base (2). Multiple piling plates (22) will abut against the outer wall of the drill base (2) and unfold, thereby exposing the drill bit (5). Then, the drive motor (61) is activated to drive the first gear (62) to rotate, thereby driving the second gear (63), the central rod (3), and the support (4) to rotate. During this period, the first motor (521) is activated to drive the drill bit (5) to rotate. The first cylinder (44) drives the drill bit (5) to extend outward to increase the drilling diameter. During this process, the support (4) will not only rotate and move up and down, but also swing along the hinge axis between the support (4) and the central rod (3) to complete the drilling preparation. S4: Restart the rotary drilling machine body (1) and rotate the rotating rod (11) and move it down to finally achieve drilling.

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