Solar power station support foundation cast-in-place pile drilling device and construction method thereof

Abstract

The invention provides a solar power station support foundation cast-in-place pile drilling device and a construction method thereof. The solar power station support foundation cast-in-place pile drilling device comprises a driving vehicle, a drilling machine control cross beam, a cross beam lifting assembly, a cross beam telescopic assembly, a drill rod assembly, a soil guide assembly and a soil suction assembly. The invention has the following advantages: (1) the telescopic drilling machine control cross beam is adopted, the distance between the drilling machine and the driving vehicle can be adjusted, and the distance of the drilling machine can be adjusted according to the drilling diameter; the telescopic control rod is arranged on the outer side of the drill rod, and the soil guide mechanism is arranged at the bottom of the telescopic control rod, so that dug soil can be effectively guided away from the periphery of a hole opening, and spoil is prevented from being too close to the hole opening. And (3) the hollow characteristic of the drill rod is utilized, a soil suction pipeline is arranged at the upper part of the drill rod, and a soil suction pump is arranged in the middle of the pipeline, so that loose soil at the bottom of the hole is effectively sucked and cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of electric power engineering construction, and in particular to a solar power station support foundation cast-in-place pile drilling device and a construction method thereof. Background Art

[0002] Solar power stations have become an important way to produce clean energy and are widely used on flat and sloping land. Solar power generation systems usually include solar panels, photovoltaic modules or heliostats, which are installed on a supporting structure to lift them to an appropriate height to better absorb solar radiation or reflect sunlight. The design and stability of the supporting structure are crucial to the performance and reliability of the power generation system. In the traditional method, part of the supporting structure is the foundation pile, which is a concrete pile embedded in the ground to support and stabilize the column. Before this, the foundation pile needs to be drilled to facilitate the subsequent embedding of the cast-in-place concrete of the foundation pile into the ground.

[0003] In the prior art, during the construction of the foundation piles of the solar power station support, due to the limitations of the drill rod design of the drilling equipment, the soil excavated is often piled around the hole mouth without leaving a safe distance, and the accumulated soil is very easy to slide into the hole, which is complicated and difficult to clean up later, affecting the pouring quality of the foundation piles. In addition, when the drill bit is pulled out, the drill bit has disturbed the soil under the drill rod blades. The existing drilling devices do not consider removing the disturbed loose soil, and the loose soil also has an adverse effect on the construction quality of the foundation piles. Summary of the invention

[0004] In view of the defects of the prior art, the present invention provides a solar power station support foundation cast-in-place pile drilling device and a construction method thereof, so as to solve the problems that the existing solar support foundation drilling device cannot move the excavated waste soil away from the foundation hole opening and cannot clean the loose soil at the bottom of the hole.

[0005] The technical solution adopted by the present invention is as follows:

[0006] The present invention provides a solar power station support foundation cast-in-place pile drilling device, comprising a driving vehicle, a drilling rig control beam (8), a beam lifting assembly, a beam telescopic assembly, a drill rod assembly, a soil guiding assembly and a soil suction assembly;

[0007] The driving vehicle is used for traveling on flat ground and sloping ground;

[0008] The drilling rig control beam (8) is horizontally installed above the driving vehicle;

[0009] The crossbeam lifting assembly is used to control the drilling rig control crossbeam (8) to lift and lower, thereby adjusting the height of the drilling rig control crossbeam (8);

[0010] The crossbeam telescopic assembly is used to control the drilling rig control crossbeam (8) to telescope, thereby adjusting the length of the drilling rig control crossbeam (8);

[0011] The drill rod assembly is mounted on one end of the drilling rig control beam (8) and is used to drill holes at the drilling point to form a cast-in-place pile foundation hole (22);

[0012] The soil guide assembly is used to guide the waste soil excavated by the drill rod assembly to the periphery of the opening of the cast-in-place pile foundation hole (22) when the drill rod assembly is drilling a hole, so as to keep the waste soil away from the opening of the cast-in-place pile foundation hole (22);

[0013] The soil suction assembly is used to suck out the loose soil at the bottom of the cast-in-place pile foundation hole (22) and guide it to an external soil pile point after the drill rod assembly completes drilling.

[0014] Preferably, the driving vehicle comprises a driving platform vehicle (1), a balancing body (2), an oblique support beam (3) and a support column (4);

[0015] The driving platform vehicle (1) provides driving force for the drilling device; the support column (4) is arranged on the top rear side of the driving platform vehicle (1) to provide vertical and horizontal support for the drilling device; the oblique support beam (3) is arranged behind the support column (4), and the balancing body (2) is arranged between the bottom of the oblique support beam (3) and the driving platform vehicle (1) to ensure the driving platform vehicle (1) stable in walking and the torque balance during operation.

[0016] Preferably, the beam lifting assembly comprises a sliding column (5) and a sliding motor (6);

[0017] The sliding column (5) is arranged in parallel in front of the bracket column (4), and the sliding motor (6) is arranged at the bottom of the sliding column (5). The sliding motor (6) is used to drive the sliding column (5) to slide up and down.

[0018] Preferably, one end of the drilling rig control beam (8) is movably connected to the support column (4); the other end of the drilling rig control beam (8) is a free end, and the middle part of the drilling rig control beam (8) is connected to the sliding column (5); when the sliding column (5) slides up and down, it drives the drilling rig control beam (8) to rise and fall.

[0019] Preferably, the crossbeam telescopic assembly comprises a hydraulic cylinder (7); the hydraulic cylinder (7) is arranged on the right side of the drilling rig control crossbeam (8) and is used to drive the drilling rig control crossbeam (8) to freely telescope.

[0020] Preferably, the drill rod assembly comprises a fixed frame (9), a drill rod control motor (10), a drill rod (11), a blade (12) and a drill bit (13);

[0021] The fixed frame (9) is fixedly mounted on the front end of the drilling rig control beam (8); the drill rod control motor (10) is arranged inside the fixed frame (9); the drill rod (11) is installed at the lower output end of the drill rod control motor (10); the drill rod control motor (10) drives the drill rod (11) to rotate, thereby providing rotational power for drilling; the outer periphery of the drill rod (11) is provided with the spiral blade (12); the bottom of the drill rod (11) is provided with the drill bit (13); the drill rod (11) is a hollow structure.

[0022] Preferably, the soil suction assembly comprises a soil inlet hole (17), a soil suction pipe (18), a fixing block (19) and a soil suction pump (20);

[0023] The drill bit (13) is provided with the soil entry hole (17); the top of the drill rod (11) is connected to the soil entry end of the soil suction pipe (18); the soil suction pipe (18) is fixed along the drilling rig control cross beam (8) by means of the fixing block (19); the soil discharge end of the soil suction pipe (18) is connected to the soil suction pump (20); the soil suction pump (20) is used to make the waste soil sucked from the soil entry hole (17) rise along the inner cavity of the drill rod (11) and be discharged from the top of the drill rod (11) into the soil suction pipe (18), and then the waste soil is transported along the soil suction pipe (18) and discharged to an external soil pile point through the soil suction pump (20).

[0024] Preferably, the soil guiding assembly comprises a control oil cylinder (14), a telescopic control rod (15) and a soil guiding mechanism (16);

[0025] Two telescopic control rods (15) are arranged on the periphery of the drill rod (11); the bottom of each telescopic control rod (15) is fixedly mounted with the soil guide mechanism (16); the top of each telescopic control rod (15) is provided with the control oil cylinder (14); the control oil cylinder (14) controls the telescopic control rod (15) to adjust the position of the soil guide mechanism (16) so that the bottom of the soil guide mechanism (16) is closely attached to the ground at the marking point of the bored pile foundation hole (22); the inside of the two soil guide mechanisms (16) is formed into a circle and the outside is formed into a conical surface; holes are drilled downward inside the two soil guide mechanisms (16); when the waste soil excavated by drilling is carried to a position higher than the top of the soil guide mechanism (16), it is transferred to the outside of the soil guide mechanism (16), so that the waste soil is kept away from the bored pile foundation hole (22).

[0026] The present invention also provides a construction method of the solar power station support foundation cast-in-place pile drilling device, comprising the following steps:

[0027] Step S1, moving the drilling device to the vicinity of the drilling mark point of the cast-in-place pile foundation hole (22) by a driving vehicle; adjusting the length of the drilling rig control beam (8) by a beam telescopic assembly so that the drill bit (13) of the drill rod (11) is aligned with the drilling mark point;

[0028] Step S2, controlling the control oil cylinder (14) of the soil guiding assembly, thereby adjusting the heights of the two soil guiding mechanisms (16) so that the bottoms of the two soil guiding mechanisms (16) are closely attached to the ground at the drilling mark point;

[0029] Step S3, starting the drill rod control motor (10), driving the drill rod (11) to rotate, and causing the drill bit (13) of the drill rod (11) to gradually enter the interior of the bored pile foundation. After the drill bit (13) reaches a specified depth, the drill rod (11) is driven to rotate in the opposite direction, and the blades (12) on the outer periphery of the drill rod (11) carry the waste soil in the bored pile foundation to the upper part of the bored pile foundation hole (22). When the soil rises above the top of the soil guide mechanism (16), it is transferred to the outside of the soil guide mechanism (16), so that the waste soil is away from the bored pile foundation hole (22);

[0030] Step S4, after the drill rod (11) is rotated in the reverse direction to be pulled out of the bored pile foundation hole (22), the soil suction pump (20) is started, and the loose soil at the bottom of the bored pile foundation hole (22) is sucked out by using the soil inlet hole (17) provided on the drill bit (13), and introduced into the external soil pile point.

[0031] The solar power station support foundation cast-in-place pile drilling device and the construction method thereof provided by the present invention have the following advantages:

[0032] (1) The present invention adopts a retractable drilling rig control beam, which can adjust the distance between the drilling rig and the driving vehicle, and the drilling rig distance can be adjusted according to the drilling hole diameter.

[0033] (2) The present invention adopts a telescopic control rod disposed on the outer side of the drill rod and a soil guiding mechanism disposed at the bottom of the telescopic control rod, which can effectively guide the excavated soil away from the vicinity of the hole opening to avoid the abandoned soil being too close to the hole opening.

[0034] (3) The present invention utilizes the hollow characteristic of the drill pipe and arranges a soil suction pipe on the upper part of the drill pipe. A soil suction pump is arranged in the middle of the pipe to effectively suck out and clean the loose soil at the bottom of the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific scheme for realizing the technical functions of the present invention, the drawings of the basic structure will be briefly introduced below. Obviously, the drawings in the following description are only a summary and description of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 A schematic diagram of the structure of a solar power station support foundation cast-in-place pile drilling device provided by the present invention;

[0037] Figure 2 A top view of the support foundation cast-in-place pile drilling device provided by the present invention;

[0038] Figure 3 A top view of the soil pile at the foundation hole provided by the present invention.

[0039] Among them: 1-driving platform vehicle; 2-balancing body; 3-oblique support beam; 4-bracket column; 5-sliding column; 6-sliding motor; 7-hydraulic cylinder; 8-drilling rig control beam; 9-fixed frame; 10-drill rod control motor; 11-drill rod; 12-blade; 13-drill bit; 14-control cylinder; 15-telescopic control rod; 16-soil guiding mechanism; 17-soil entry hole; 18-soil suction pipe; 19-fixed block; 20-soil suction pump; 21-external soil pile; 22-cast-in-place pile foundation hole. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] The invention provides a solar power station support foundation bored pile drilling device and a construction method thereof, which are solar power station component support and heliostat support foundation bored pile drilling devices and a construction method thereof. The invention solves the problems that the existing solar power station component and heliostat support foundation bored pile drilling devices are too close to the hole mouth and easily fall into the hole, and the loose soil at the bottom of the hole cannot be completely discharged.

[0042] See also Figure 1 to Figure 3 The present invention provides a solar power station support foundation cast-in-place pile drilling device, including a driving vehicle, a drilling rig control beam 8, a beam lifting assembly, a beam telescopic assembly, a drill rod assembly, a soil guide assembly and a soil suction assembly;

[0043] The driving vehicle is used for traveling on flat ground and sloping ground;

[0044] The drilling rig control beam 8 is horizontally installed above the driving vehicle;

[0045] The crossbeam lifting assembly is used to control the drilling rig control crossbeam 8 to move up and down, thereby adjusting the height of the drilling rig control crossbeam 8;

[0046] The crossbeam telescopic assembly is used to control the drilling rig control crossbeam 8 to telescope, thereby adjusting the length of the drilling rig control crossbeam 8;

[0047] The drill rod assembly is mounted on one end of the drilling rig control beam 8 and is used to drill holes at the drilling point to form a cast-in-place pile foundation hole 22;

[0048] The soil guide assembly is used to guide the waste soil excavated by the drill rod assembly to the periphery of the opening of the cast-in-place pile foundation hole 22 when the drill rod assembly is drilling a hole, so as to keep the waste soil away from the opening of the cast-in-place pile foundation hole 22;

[0049] The soil suction assembly is used to suck out the loose soil at the bottom of the cast-in-place pile foundation hole 22 after the drill rod assembly completes drilling, and guide it to an external soil pile point.

[0050] The following is a detailed description of each component:

[0051] (I) Driving vehicle

[0052] The driving vehicle comprises a driving platform vehicle 1, a balancing body 2, an oblique support beam 3 and a support column 4;

[0053] The driving platform vehicle 1 provides walking power for the drilling device; the support column 4 is arranged on the top rear side of the driving platform vehicle 1 to provide vertical and horizontal support for the drilling device; the oblique support beam 3 is arranged behind the support column 4, and the balancing body 2 is arranged between the bottom of the oblique support beam 3 and the driving platform vehicle 1 to ensure the walking stability of the driving platform vehicle 1 and the torque balance during operation.

[0054] (ii) Beam lifting assembly

[0055] The beam lifting assembly includes a sliding column 5 and a sliding motor 6;

[0056] The sliding column 5 is arranged in parallel in front of the bracket column 4 , and the sliding motor 6 is arranged at the bottom of the sliding column 5 , and the sliding motor 6 is used to drive the sliding column 5 to slide up and down.

[0057] One end of the drilling rig control beam 8 is movably connected to the support column 4; the other end of the drilling rig control beam 8 is a free end, and the middle part of the drilling rig control beam 8 is connected to the sliding column 5; when the sliding column 5 slides up and down, it drives the drilling rig control beam 8 to rise and fall.

[0058] (III) Crossbeam telescopic components

[0059] The crossbeam telescopic assembly includes a hydraulic cylinder 7; the hydraulic cylinder 7 is arranged on the right side of the drilling rig control crossbeam 8, and is used to drive the drilling rig control crossbeam 8 to freely telescope.

[0060] (IV) Drill pipe assembly

[0061] The drill rod assembly includes a fixed frame 9, a drill rod control motor 10, a drill rod 11, a blade 12 and a drill bit 13;

[0062] The fixed frame 9 is fixedly installed on the front end of the drilling rig control beam 8; the drill rod control motor 10 is arranged inside the fixed frame 9, and the drill rod 11 is installed at the lower output end of the drill rod control motor 10. The drill rod control motor 10 drives the drill rod 11 to rotate, thereby providing rotational power for drilling; the spiral blades 12 are arranged on the outer periphery of the drill rod 11; the drill bit 13 is arranged at the bottom of the drill rod 11; the drill rod 11 is a hollow structure.

[0063] (V) Soil absorption components

[0064] The soil suction assembly includes a soil inlet hole 17, a soil suction pipe 18, a fixing block 19 and a soil suction pump 20;

[0065] The drill bit 13 is provided with the soil entry hole 17, and the top of the drill rod 11 is connected to the soil entry end of the soil suction pipe 18; the soil suction pipe 18 is fixed along the drilling rig control beam 8 and the support column 4 by the fixing block 19, and the soil discharge end of the soil suction pipe 18 is connected to the soil suction pump 20; the soil suction pump 20 is used to make the waste soil sucked from the soil entry hole 17 rise along the inner cavity of the drill rod 11, and be discharged from the top of the drill rod 11 into the soil suction pipe 18, and then the waste soil is transported along the soil suction pipe 18 and discharged to the external soil pile point through the soil suction pump 20.

[0066] (VI) Soil guide components

[0067] The soil guide assembly is used to ensure that the excavated spoil is kept away from the surroundings of the cast-in-place pile foundation hole 22 .

[0068] The soil guiding assembly includes a control oil cylinder 14, a telescopic control rod 15 and a soil guiding mechanism 16;

[0069] Two telescopic control rods 15 are arranged on the periphery of the drill rod 11, and the soil guiding mechanism 16 is fixedly installed at the bottom of each telescopic control rod 15. The control oil cylinder 14 is arranged on the top of each telescopic control rod 15. The control oil cylinder 14 controls the telescopic control rod 15 to adjust the position of the soil guiding mechanism 16, so that the bottom of the soil guiding mechanism 16 is close to the ground of the marking point of the bored pile foundation hole 22; the interior of the two soil guiding mechanisms 16 is surrounded by a circle, and the exterior is surrounded by a conical surface, and holes are drilled downward inside the two soil guiding mechanisms 16; when the waste soil excavated by drilling is carried to a level higher than the top of the soil guiding mechanism 16, it is transferred to the outside of the soil guiding mechanism 16, so that the waste soil is kept away from the bored pile foundation hole 22.

[0070] The present invention also provides a construction method of a solar power station support foundation cast-in-place pile drilling device, comprising the following steps:

[0071] Step S1, moving the drilling device to the vicinity of the drilling mark point of the cast-in-place pile foundation hole 22 by driving the vehicle; adjusting the length of the drilling rig control beam 8 by the beam telescopic assembly, so that the drill bit 13 of the drill rod 11 is aligned with the drilling mark point;

[0072] Step S2, controlling the control oil cylinder 14 of the soil guiding assembly, and then adjusting the heights of the two soil guiding mechanisms 16, so that the bottoms of the two soil guiding mechanisms 16 are closely attached to the ground at the drilling mark point;

[0073] Step S3, start the drill rod control motor 10, drive the drill rod 11 to rotate, and make the drill bit 13 of the drill rod 11 gradually enter the interior of the cast-in-place pile foundation. After the drill bit 13 reaches the specified depth, drive the drill rod 11 to rotate in the opposite direction, and the blades 12 on the outer periphery of the drill rod 11 carry the waste soil in the cast-in-place pile foundation to the upper part of the cast-in-place pile foundation hole 22. When the soil rises higher than the top of the soil guide mechanism 16, it is transferred to the outside of the soil guide mechanism 16, so that the waste soil is away from the cast-in-place pile foundation hole 22;

[0074] Step S4, after the drill rod 11 rotates in the reverse direction and is pulled out of the bored pile foundation hole 22, the soil suction pump 20 is started, and the loose soil at the bottom of the bored pile foundation hole 22 is sucked out by using the soil inlet hole 17 provided on the drill bit 13, and introduced into the external soil pile point.

[0075] The solar power station support foundation cast-in-place pile drilling device and the construction method thereof provided by the present invention have the following advantages:

[0076] (1) The present invention adopts a retractable drilling rig control beam, which can adjust the distance between the drilling rig and the driving vehicle, and the drilling rig distance can be adjusted according to the drilling hole diameter.

[0077] (2) The present invention adopts a telescopic control rod disposed on the outer side of the drill rod and a soil guiding mechanism disposed at the bottom of the telescopic control rod, which can effectively guide the excavated soil away from the vicinity of the hole opening to avoid the abandoned soil being too close to the hole opening.

[0078] (3) The present invention utilizes the hollow characteristic of the drill pipe and arranges a soil suction pipe on the upper part of the drill pipe. A soil suction pump is arranged in the middle of the pipe to effectively suck out and clean the loose soil at the bottom of the hole.

[0079] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be considered as the scope of protection of the present invention.

Claims

1. A solar power station support foundation pile drilling device, characterized in that: It comprises a driving vehicle, a drilling rig control beam (8), a beam lifting assembly, a beam telescopic assembly, a drill rod assembly, a soil guiding assembly and a soil suction assembly; The driving vehicle is used for traveling on flat ground and sloping ground; The drilling rig control beam (8) is horizontally installed above the driving vehicle; The crossbeam lifting assembly is used to control the drilling rig control crossbeam (8) to lift and lower, thereby adjusting the height of the drilling rig control crossbeam (8); The crossbeam telescopic assembly is used to control the drilling rig control crossbeam (8) to telescope, thereby adjusting the length of the drilling rig control crossbeam (8); The drill rod assembly is mounted on one end of the drilling rig control beam (8) and is used to drill holes at the drilling point to form a cast-in-place pile foundation hole (22); The soil guide assembly is used to guide the waste soil excavated by the drill rod assembly to the periphery of the opening of the cast-in-place pile foundation hole (22) when the drill rod assembly is drilling a hole, so as to keep the waste soil away from the opening of the cast-in-place pile foundation hole (22); The soil suction assembly is used to suck out the loose soil at the bottom of the cast-in-place pile foundation hole (22) and guide it to an external soil pile point after the drill rod assembly completes drilling.

2. The solar power station support foundation cast-in-place pile drilling device according to claim 1 is characterized in that: The driving vehicle comprises a driving platform vehicle (1), a balancing body (2), an oblique support beam (3) and a support column (4); The driving platform vehicle (1) provides driving force for the drilling device; the support column (4) is arranged on the top rear side of the driving platform vehicle (1) to provide vertical and horizontal support for the drilling device; the oblique support beam (3) is arranged behind the support column (4), and the balancing body (2) is arranged between the bottom of the oblique support beam (3) and the driving platform vehicle (1) to ensure the driving platform vehicle (1) stable in walking and the torque balance during operation.

3. The solar power station support foundation cast-in-place pile drilling device according to claim 2 is characterized in that: The crossbeam lifting assembly comprises a sliding column (5) and a sliding motor (6); The sliding column (5) is arranged in parallel in front of the bracket column (4), and the sliding motor (6) is arranged at the bottom of the sliding column (5). The sliding motor (6) is used to drive the sliding column (5) to slide up and down.

4. The solar power station support foundation cast-in-place pile drilling device according to claim 3 is characterized in that: One end of the drilling rig control beam (8) is movably connected to the support column (4); the other end of the drilling rig control beam (8) is a free end, and the middle part of the drilling rig control beam (8) is connected to the sliding column (5); when the sliding column (5) slides up and down, it drives the drilling rig control beam (8) to rise and fall.

5. The solar power station support foundation cast-in-place pile drilling device according to claim 1, characterized in that: The crossbeam telescopic assembly comprises a hydraulic cylinder (7); the hydraulic cylinder (7) is arranged on the right side of the drilling rig control crossbeam (8) and is used to drive the drilling rig control crossbeam (8) to freely telescope.

6. The solar power station support foundation cast-in-place pile drilling device according to claim 1, characterized in that: The drill rod assembly comprises a fixed frame (9), a drill rod control motor (10), a drill rod (11), a blade (12) and a drill bit (13); The fixed frame (9) is fixedly mounted on the front end of the drilling rig control beam (8); the drill rod control motor (10) is arranged inside the fixed frame (9); the drill rod (11) is installed at the lower output end of the drill rod control motor (10); the drill rod control motor (10) drives the drill rod (11) to rotate, thereby providing rotational power for drilling; the outer periphery of the drill rod (11) is provided with the spiral blade (12); the bottom of the drill rod (11) is provided with the drill bit (13); the drill rod (11) is a hollow structure.

7. The solar power station support foundation cast-in-place pile drilling device according to claim 6, characterized in that: The soil suction assembly comprises a soil inlet hole (17), a soil suction pipe (18), a fixing block (19) and a soil suction pump (20); The drill bit (13) is provided with the soil entry hole (17); the top of the drill rod (11) is connected to the soil entry end of the soil suction pipe (18); the soil suction pipe (18) is fixed along the drilling rig control cross beam (8) by means of the fixing block (19); the soil discharge end of the soil suction pipe (18) is connected to the soil suction pump (20); the soil suction pump (20) is used to make the waste soil sucked from the soil entry hole (17) rise along the inner cavity of the drill rod (11) and be discharged from the top of the drill rod (11) into the soil suction pipe (18), and then the waste soil is transported along the soil suction pipe (18) and discharged to an external soil pile point through the soil suction pump (20).

8. The solar power station support foundation cast-in-place pile drilling device according to claim 6, characterized in that: The soil guiding assembly comprises a control oil cylinder (14), a telescopic control rod (15) and a soil guiding mechanism (16); Two telescopic control rods (15) are arranged on the periphery of the drill rod (11); the bottom of each telescopic control rod (15) is fixedly mounted with the soil guide mechanism (16); the top of each telescopic control rod (15) is provided with the control oil cylinder (14); the control oil cylinder (14) controls the telescopic control rod (15) to adjust the position of the soil guide mechanism (16) so that the bottom of the soil guide mechanism (16) is closely attached to the ground at the marking point of the bored pile foundation hole (22); the inside of the two soil guide mechanisms (16) is formed into a circle and the outside is formed into a conical surface; holes are drilled downward inside the two soil guide mechanisms (16); when the waste soil excavated by drilling is carried to a position higher than the top of the soil guide mechanism (16), it is transferred to the outside of the soil guide mechanism (16), so that the waste soil is kept away from the bored pile foundation hole (22).

9. A construction method for a solar power station support foundation bored pile drilling device according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step S1, moving the drilling device to the vicinity of the drilling mark point of the cast-in-place pile foundation hole (22) by a driving vehicle; adjusting the length of the drilling rig control beam (8) by a beam telescopic assembly so that the drill bit (13) of the drill rod (11) is aligned with the drilling mark point; Step S2, controlling the control oil cylinder (14) of the soil guiding assembly, thereby adjusting the heights of the two soil guiding mechanisms (16) so that the bottoms of the two soil guiding mechanisms (16) are closely attached to the ground at the drilling mark point; Step S3, starting the drill rod control motor (10), driving the drill rod (11) to rotate, and causing the drill bit (13) of the drill rod (11) to gradually enter the interior of the bored pile foundation. After the drill bit (13) reaches a specified depth, the drill rod (11) is driven to rotate in the opposite direction, and the blades (12) on the outer periphery of the drill rod (11) carry the waste soil in the bored pile foundation to the upper part of the bored pile foundation hole (22). When the soil rises above the top of the soil guide mechanism (16), it is transferred to the outside of the soil guide mechanism (16), so that the waste soil is away from the bored pile foundation hole (22); Step S4, after the drill rod (11) is rotated in the reverse direction to be pulled out of the bored pile foundation hole (22), the soil suction pump (20) is started, and the loose soil at the bottom of the bored pile foundation hole (22) is sucked out by using the soil inlet hole (17) provided on the drill bit (13), and introduced into the external soil pile point.

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