Auxiliary device for pile foundation core drilling detection

Abstract

The invention relates to a pile foundation drill core detection auxiliary device which comprises a mounting disc, an adjusting and limiting mechanism, a supporting mechanism and a clamping and adapting mechanism. Through the arrangement of the adjusting and limiting mechanism, a drill pipe can be limited in a sleeving manner after the mounting disc is mounted or is directly located at a required position; therefore, perpendicularity core drilling sampling operation is completed in a pre-positioning mode before core drilling sampling, the center position of a pile foundation is found in advance, then the drill pipe is limited by adjusting the limiting mechanism, an adjustable two-point positioning mode is adopted, it is guaranteed that deviation does not occur during core drilling sampling, and perpendicularity during core drilling sampling is improved; the drilling pipe is limited at the positioning position of a pile foundation through cooperation of the mounting disc and the positioning pipe, then the drilling pipe is limited through the inner moving cylinder in the drilling process, two-point vertical limiting drilling is achieved, then the effect of three-point vertical drilling is achieved in cooperation with limitation of a drilling hole, and the vertical stability during core sample drilling can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of pile foundation detection, and in particular relates to a pile foundation core drilling detection auxiliary device. Background Art

[0002] Pile foundation core drilling inspection is a method for inspecting the quality of cast-in-place concrete piles. It is carried out by using a drilling rig to drill core samples from the inside of the pile body. This method is mainly used to detect defects and positions of the pile body, concrete strength, pile length, sediment thickness, and to identify the properties of the rock and soil layer at the pile end and the integrity of the pile body. The core drilling method includes the use of a high-speed drilling rig, in conjunction with equipment and construction processes such as a water pump, single-acting double-tube drill bit, diamond drill pipe, reamer, etc.; to obtain concrete core samples and rock and soil core samples at the pile end. Through corresponding detection technology and equipment, the length and strength of the concrete pile foundation, the sediment thickness at the bottom of the pile foundation, the integrity of the pile body, etc. can be detected; compared with the ultrasonic detection method, this method has higher detection accuracy.

[0003] The traditional pile foundation inspection has the problem of inconvenient inclined drilling when drilling the core, and requires holding the drill and pushing it to drill, which consumes a lot of physical energy during long-term drilling. For this reason, we provide auxiliary support coordination devices for building pile foundation inspection to solve the above problems.

[0004] In view of the above technical problems, for example, the announcement number CN214643080U discloses an auxiliary support coordination device for building pile foundation detection, which is provided with a rotating rod, a gear 1 and a gear 2, and when the crank drives the positioning gear 3 to rotate, the rotating rod is driven to rotate through the card strip at the same time, the rotating rod drives the gear 1 to rotate, the gear 1 drives the gear 2 to rotate, and the gear 2 drives the track plate to rotate, thereby adjusting the inclination angle of the track plate;

[0005] The above patent also has the following shortcomings: in the actual core sampling process, it is easy for the core sampling to be offset due to the length of the pile foundation. The deeper the drilling depth, the more serious the core sampling offset, so that it is easy to damage the steel cage due to the large inclination during core sampling, and it will affect the sampling results and make it impossible to sample the depth or the bottom of the pile foundation. Summary of the invention

[0006] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a pile foundation core drilling detection auxiliary device, which completes the verticality core drilling sampling operation by adopting a pre-positioning method before core drilling sampling, finds the center position of the pile foundation in advance, and then limits the drill pipe by pre-positioning, and adopts an adjustable two-point positioning method to ensure that the drilling core sampling does not deviate to improve the verticality of the core drilling sampling.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a pile foundation core drilling detection auxiliary device, comprising a mounting plate, an adjustment and limiting mechanism, a supporting mechanism and a clamping and adapting mechanism, wherein a positioning hole is provided in the middle of the mounting plate, and the adjustment and limiting mechanism is located above the mounting plate;

[0008] The adjustment and limiting mechanism includes two columns, a top plate, a limiting frame, an outer rotating cylinder, an inner moving cylinder and a driving assembly. The two columns are respectively located on both sides of the mounting plate and the bottoms are fixedly connected to the supporting mechanism. The tops of the columns are connected to the top plates, and a first through hole is provided in the middle of the top plates. The outer rotating cylinder is clamped at the first through hole and is rotatably connected. The outer rotating cylinder has an internal thread, and the inner moving cylinder has an external thread. The inner moving cylinder is located in the outer rotating cylinder and the external thread and the internal thread are matched. The driving assembly is used to drive the outer rotating cylinder to rotate so as to drive the inner moving cylinder to rise and fall.

[0009] A second through hole is provided in the middle of the limit frame, and the second through hole is fixedly connected to the upper end of the outer circumferential surface of the inner movable cylinder. An anti-swing component is also provided between the limit frame and the top plate, and the anti-swing component is used to prevent the limit frame from shaking horizontally. The clamping adapter mechanism is provided on both sides of the mounting plate, and the clamping adapter mechanism is used to clamp the surface of the area to be measured.

[0010] Furthermore, the adjustment and limiting mechanism also includes a connecting plate, which is located below the top plate, and has a third through hole in the middle of the connecting plate. Both sides of the connecting plate are connected to the columns. The driving assembly includes a driving motor, which is arranged on the connecting plate. The output end shaft key of the driving motor is connected to a gear, and the outer rotating cylinder is provided with a gear ring, and the gear and the gear ring are meshed.

[0011] Furthermore, the anti-sway assembly includes two extension plates and two movable limit rods, the two extension plates are connected to both sides of the limit frame, the movable limit rods are fixedly provided on the lower surface of the extension plates, and the top plate is provided with through holes on both sides, and the movable limit rods pass through the through holes.

[0012] Furthermore, the support mechanism includes two transverse plates, which are fixedly mounted on both sides of the mounting plate, the outer ends of the transverse plates are rotatably connected to a rotating plate, and the bottom ends of the rotating plates are rotatably connected to a mounting seat.

[0013] Furthermore, the clamping adapter mechanism includes two groups of mounting components, two groups of locking components and two groups of extension components. The two groups of mounting components are arranged on both sides of the mounting plate. The extension components are arranged inside the mounting components and are slidably connected. The ends of the extension components can clamp the side walls of the area to be measured. The locking components are used to limit the displacement of the extension components after clamping.

[0014] Furthermore, the installation component includes a connecting pipe, which is fixedly installed on the outer wall of the installation plate. The connecting pipe is provided with a strip hole running through the upper and lower sides. The locking component is located in the strip hole and limits the extension component by abutting against it.

[0015] Furthermore, the extension assembly includes an extension rod, the extension rod is located inside the connecting tube and is slidably connected, and an arc-shaped adapter plate is fixedly installed on the end of the extension rod.

[0016] Furthermore, the locking assembly includes a screw rod, which is fixedly mounted on the upper surface of the extension rod and extends out of the strip hole. One end of the screw rod extending out of the strip hole is threadedly connected with a screw sleeve. A slider is fixedly mounted on the bottom of the extension rod. The slider is located in the strip hole below the connecting pipe and is slidably connected.

[0017] Furthermore, a positioning tube is provided at the positioning hole of the mounting plate.

[0018] Furthermore, a pile foundation core drilling detection method is provided, comprising the following steps:

[0019] S1. Adjust the clamping adapter mechanism so that it is clamped on the outer peripheral surface of the pile foundation so that the positioning hole of the mounting plate is aligned with the core drilling area;

[0020] S2, fixing the support mechanism to limit the horizontal and vertical displacements of the entire regulating limit mechanism;

[0021] S3, the coincidence of the axis of the inner moving cylinder, the axis of the positioning hole and the axis of the pre-drilled hole of the pile foundation to be tested is detected. After the detection is completed, the drill pipe is sleeved on the inner side wall of the inner moving cylinder and is limited in the horizontal direction. The outer rotating cylinder rotates to drive the inner moving cylinder to move downward, and the drill pipe moves downward with the inner moving cylinder until the drill pipe fits the surface of the core drilling area;

[0022] S4. The drill pipe starts to drill the core and take out the sample to be tested.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention can limit the position of the drill pipe by sleeve type after the installation plate is installed or directly in the required position through the setting of the adjustment mechanism (the drill pipe extends into the inner moving cylinder, and the outer wall of the drill pipe and the inner wall of the inner moving cylinder fit together to achieve the limit), so that the verticality core sampling operation is completed by pre-positioning before core sampling, the center position of the pile foundation is found in advance, and then the drill pipe is limited by the inner moving cylinder, and an adjustable two-point positioning method is adopted to ensure that there is no deviation during the drilling and core sampling and to improve the verticality during the core sampling. The positioning of the drill pipe at the pile foundation positioning is limited by the cooperation of the installation plate and the positioning hole, and then the outer rotating cylinder and the inner moving cylinder are used to limit the drill pipe during the drilling process to achieve the limiting work of the two-point position, realizing the advantages of two-point vertical limit drilling, and then in combination with the limitation of the drilling hole, the effect of three-point vertical drilling can also be achieved, so that the vertical stability during the core sampling can be improved.

[0025] 2. The present invention can improve the positioning and limiting work of the mounting plate before installation through the setting of the supporting mechanism, and then cooperate with the mounting plate to be installed on the top of the pile foundation to improve the stability during fixation. The clamping adapter mechanism can be used to adapt to pile foundation diameters of different sizes, so as to assist it in completing the positioning at the pile core and the subsequent locking and drilling, ensuring that it is in the center, and can assist in the drilling operation. By using a rotatable and adjustable rotating plate and mounting seat, the supporting mechanism can adapt to different diameters and pile foundations at different heights from the ground, and can also be stably connected to the ground. The adapter mechanism uses a push-pull method to adjust the distance between the two sets of adapter plates so as to adapt, and uses a threaded locking method to achieve the locking operation after adjustment. Its operation is simple and convenient, and it is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of Example 1 of the present invention;

[0027] Figure 2 This is a schematic diagram of the three-dimensional structure of Embodiment 1 of the present invention after the adjustment limit assembly is hidden;

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the mounting plate and the supporting mechanism in Embodiment 1 of the present invention;

[0029] Figure 4 For the present invention Figure 3 A schematic diagram of the local enlarged structure at point A in the middle;

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the mounting plate and the supporting mechanism in another direction in Embodiment 1 of the present invention;

[0031] Figure 6 It is a schematic diagram of the vertical sectional three-dimensional structure of the adjustment and limiting assembly in Example 1 of the present invention.

[0032] Markings in the figure: 1. Mounting plate; 2. Support mechanism; 21. Horizontal plate; 22. Rotating plate; 23. Mounting seat; 3. Adapter mechanism; 31. Connecting tube; 32. Extension rod; 33. Arc adapter plate; 34. Strip hole; 35. Screw; 36. Screw sleeve; 37. Slider; 4. Adjustment limit mechanism; 41. Post; 42. Connecting plate; 43. Top plate; 44. Outer rotating cylinder; 45. Gear ring; 46. Driving motor; 47. Gear; 48. Inner moving cylinder; 49. Connecting ring; 410. Extension plate; 411. Moving limit rod; 5. Positioning tube. DETAILED DESCRIPTION

[0033] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below with reference to the accompanying drawings for detailed description as follows.

[0034] Example 1

[0035] like Figure 1-Figure 6 As shown, this embodiment provides a pile foundation core drilling detection auxiliary device, including a mounting plate 1, an adjustment and limiting mechanism 4, a supporting mechanism 2 and a clamping and adapting mechanism 3.

[0036] A positioning hole is provided in the middle of the mounting plate 1 , a positioning tube 5 is provided at the positioning hole of the mounting plate 1 , and an adjustment and limiting mechanism 4 is located above the mounting plate 1 .

[0037] like Figure 6As shown, the adjustment and limiting mechanism 4 includes two columns 41, a top plate 43, a connecting plate 42, a limiting frame, an outer rotating cylinder 44, an inner moving cylinder 48 and a driving assembly. The two columns 41 are respectively located on both sides of the mounting plate 1 and the bottom is fixedly connected to the supporting mechanism 2. The tops of the two columns 41 are connected to the top plates 43 and are connected by bolts. A first through hole is provided in the middle of the top plate 43. The outer rotating cylinder 44 is clamped at the first through hole and is rotatably connected. Specifically, a bearing is provided at the first through hole. The circumference of the outer rotating cylinder 44 is fixedly connected to the inner ring of the bearing. A gear ring 45 is provided on the circumference of the outer rotating cylinder 44. The gear ring 45 is located below the first through hole. The inner circumference of the outer rotating cylinder 44 has an internal thread, and the inner moving cylinder 48 has an external thread. The inner moving cylinder 48 is located in the outer rotating cylinder 44 and the external thread and the internal thread are adapted to each other. The middle of the limit frame has a second through hole, and the second through hole is fixedly connected to the upper end of the outer circumference of the inner moving cylinder 48. Preferably, a connecting ring 49 is fixedly provided on the inner circumference of the second through hole, and the connecting ring 49 is fixedly connected to the outer circumference of the inner moving cylinder 48. An anti-swing component is also provided between the limit frame and the top plate 43, and the anti-swing component is used to prevent the limit frame from shaking horizontally. Specifically, the anti-swing component includes two extension plates 410 and two movable limit rods 411. The two extension plates 410 are connected to both sides of the limit frame, and the lower surface of the extension plate 410 is fixedly provided with a movable limit rod 411. The top plate 43 is provided with perforations on both sides, and the movable limit rod 411 passes through the perforations. During the upward movement process, the inner moving cylinder 48 will synchronously drive the connecting ring 49 and the extension plate 410 to move together, and will directly pull the movable limit rod 411 to slide along the axis of the perforation on the top plate 43 to perform auxiliary limiting work when moving up and down. The connecting plate 42 is located below the top plate 43, and has a third through hole in the middle of the connecting plate 42. Both sides of the connecting plate 42 are connected to the columns 41. The driving assembly is used to drive the outer rotating cylinder 44 to rotate, thereby driving the inner moving cylinder 48 to rise and fall; specifically, the driving motor 46 is arranged on the connecting plate 42, and the output end shaft key of the driving motor 46 is connected to the gear 47, and the outer rotating cylinder 44 is provided with a ring gear 45, and the gear 47 and the ring gear 45 are meshed.

[0038] During the drilling process, the inner moving cylinder 48 is used to limit the upper drill pipe and prevent it from deviating. Then, the positioning tube 5 cooperates to limit the drill pipe at the top of the pile foundation and its rotation after drilling. During the drilling process, the drilled hole is used to assist in limiting the drill pipe. The verticality limit and anti-deviation work is achieved based on the above three points to ensure its stability during the drilling process.

[0039] like Figure 4-Figure 5As shown, the supporting mechanism 2 includes two horizontal plates 21, and the two horizontal plates 21 are fixedly mounted on both sides of the mounting plate 1. The outer ends of the horizontal plates 21 are rotatably connected to the rotating plates 22, and the bottom ends of the rotating plates 22 are rotatably connected to the mounting seats 23. The lower surfaces of the columns 41 fit the upper surfaces of the horizontal plates 21. The rotating plates 22 are provided so that the mounting seats 23 can be adjusted according to the height difference of the fixed surfaces. The mounting seats 23 are rotatably provided so that the mounting seats 23 can adapt to the fixed surfaces with an inclination, so as to ensure that the upper limit frame of the adjustment limit mechanism 4, the mounting plate 1 and the surface of the pile foundation to be measured are parallel, thereby ensuring the accuracy of positioning.

[0040] The pre-positioning method is adopted to complete the limiting operation during drilling. During drilling, the upper and lower points are used to limit the drill head and the drill pipe. That is, the pile foundation positioning is realized by the cooperation of the mounting plate 1 and the positioning hole, so as to limit the drill pipe. Then, the outer rotating cylinder 44 and the inner moving cylinder 48 are used to limit the drill pipe during the drilling process. At the same time, the spacing between the two points can be adjusted as needed to ensure that it can adapt to drill pipes of different depths. At the same time, the limiting effect of the drill pipe during drilling can be increased when the spacing becomes larger.

[0041] The clamping adapter mechanism 3 is arranged on both sides of the mounting plate 1, and the clamping adapter mechanism 3 is used to clamp the surface of the area to be measured. The clamping adapter mechanism 3 includes two groups of mounting components, two groups of locking components and two groups of extension components. The two groups of mounting components are arranged on both sides of the mounting plate 1. The extension components are arranged inside the mounting components and are slidably connected. The ends of the extension components can clamp the side walls of the area to be measured. The locking components are used to limit the displacement of the extension components after clamping. Specifically, the mounting components include a connecting pipe 31, which is fixedly mounted on the outer wall of the mounting plate 1. The connecting pipe 31 is provided with a strip hole 34 running through the upper and lower sides. The locking components are located in the strip hole 34 and limit the extension components by abutting. The extension components include an extension rod 32, which is located inside the connecting pipe 31 and is slidably connected. The ends of the extension rod 32 are fixedly mounted with an arc-shaped adapter plate 33. Preferably, the inner side of the arc-shaped adapter plate 33 can be connected to a resin block or a nylon block so that it can adapt to a rougher pile foundation side. The locking assembly includes a screw 35, which is fixedly mounted on the upper surface of the extension rod 32 and extends out of the strip hole 34. One end of the screw 35 extending out of the strip hole 34 is threadedly connected with a screw sleeve 36. A slider 37 is fixedly mounted on the bottom of the extension rod 32. The slider 37 is located in the strip hole 34 below the connecting pipe 31 and is slidably connected. By loosening the screw sleeve 36, the extension rod 32 can be adjusted forward and backward, so that the arc-shaped adapter plate 33 on the extension rod 32 fits the outer side of the pile foundation to be measured, and then the screw sleeve 36 is tightened, so that the screw sleeve 36 and the end surface of the strip hole 34 generate friction, thereby limiting the movement of the extension rod 32.

[0042] When the work is resumed, the screw sleeve 36 is rotated in advance, and then the two groups of extension rods 32 and the adapter plate can be directly pulled, and the top of the connecting tube 31 is engraved or coated with scale lines to ensure the accuracy of the push-pull process. When the spacing between the two groups of adapter plates is at the maximum state, the installation plate 1 can be driven to be placed on the top of the pile foundation. At this time, the two groups of adapter plates are pushed at the same time according to the diameter of the pile foundation, and the adapter plate will directly drive the extension rod 32 to extend and slide inside the connecting tube 31, and the contraction position between the two groups of adapter plates is the same according to the scale, until the pile foundation of the corresponding diameter is fully adapted to complete the adaptation and positioning operation. When sliding adjustment is performed, the screw rod 35 will slide inside the strip hole 34, and the slider 37 will also slide in the bottom strip hole 34 to ensure its sliding stability, and it can also be limited when sliding. When it is in the desired position, the screw sleeve 36 can be rotated until the screw sleeve 36 is pressed against the top of the connecting pipe 31, so that the desired spacing position can be adjusted and the center of the pile foundation can be locked for subsequent operations. The screw rod 35 and the slider 37 are both located inside the strip hole 34. The inner wall of the mounting plate 1 is fixedly installed with a positioning tube 5. The positioning tube 5 is arranged to assist the drill pipe and the drill pipe in limiting and preventing deviation during drilling, thereby improving the verticality of drilling.

[0043] This embodiment also provides a pile foundation core drilling detection method, comprising the following steps:

[0044] S1. Adjust the clamping adapter mechanism 3 so that it is clamped on the outer peripheral surface of the pile foundation so that the positioning hole of the mounting plate 1 is aligned with the core drilling area; the specific steps are as follows: align the core drilling area on the surface of the mounting plate 1, the two surfaces need to be parallel to each other, and by loosening the screw sleeve 36, the extension rod 32 can be adjusted forward and backward, so that the arc-shaped adapter plate 33 on the extension rod 32 is tightly attached to the outer side of the pile foundation to be measured, and then tighten the screw sleeve 36 so that the screw sleeve 36 and the end face of the strip hole 34 generate friction, thereby limiting the movement of the extension rod 32, thereby completing the clamping.

[0045] S2, fix the support mechanism 2 to limit the horizontal displacement and vertical position of the adjustment limit mechanism 4 as a whole; the specific steps are as follows: pull the rotating plate 22 so that the lower surface of the mounting seat 23 fits with the fixed surface, and then tighten the bolts to fix the support mechanism 2.

[0046] S3. Check the degree of coincidence of the axis of the inner moving cylinder 48, the axis of the positioning hole and the axis of the pre-drilled hole of the pile foundation to be tested. After the test, the drill pipe is sleeved on the inner wall of the inner moving cylinder 48 and is limited in the horizontal direction. The outer rotating cylinder 44 rotates to drive the inner moving cylinder 48 to move downward, and the drill pipe moves downward with the inner moving cylinder 48 until the drill pipe fits the surface of the drill core area. The specific steps are as follows: the outer rotating cylinder 44 rotates to make the inner moving cylinder 48 move downward to fit the upper surface of the positioning tube 5, and by measuring whether there is an offset between the side walls of the inner moving cylinder 48 and the side walls of the positioning tube 5, it is determined whether the axes of the inner moving cylinder 48 and the positioning tube 5 coincide. After the inspection is completed, the drill pipe is extended into the inner moving cylinder 48, and the outer circumference of the drill pipe is adapted to the inner circumference of the inner moving cylinder 48, so it will be limited by the inner moving cylinder 48. The existence of the limit frame and the movable limit rod 411 will ensure that the inner moving cylinder 48 will not shake, and then the outer rotating cylinder 44 rotates to drive the inner moving cylinder 48 to move downward, and the drill pipe follows the rotating cylinder to move downward until the lower surface of the inner moving cylinder 48 hits the upper surface of the positioning tube 5. In the process of the drill pipe following the rotating cylinder to move downward, it can be ensured that the drill pipe is always vertically downward, which provides a guarantee for the accuracy of the core drilling. The inner moving cylinder 48 provides one-point positioning, and the positioning tube 5 provides two-point positioning. Vertical double-point positioning is achieved through the inner moving cylinder 48 and the positioning tube 5. When the drill pipe is drilled into the pile foundation to be tested, the axis of the hole formed will coincide with the axis of the inner moving cylinder 48 and the axis of the positioning tube 5, and the formed hole will limit the drill pipe, thereby achieving three-point positioning.

[0047] S4. The drill pipe starts to drill the core and take out the sample to be tested.

[0048] Example 2

[0049] The difference between this embodiment and implementation 1 is that no positioning tube 5 is provided on the installation plate 1, and the original positioning tube 5 is replaced by a pre-buried steel pipe with a depth higher than the pile foundation. The steel cage is placed in the pile foundation hole and then concrete is poured until the concrete solidifies. In the process of pouring concrete, the interior of the pre-buried steel pipe is connected and poured together, and the pre-buried steel pipe is limited. At this time, auxiliary drilling processing can be carried out. At the same time, after core sampling in the pre-buried steel pipe, pouring is carried out, and the core sampling hole can be filled.

[0050] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pile foundation core drilling detection auxiliary device, characterized in that: It includes a mounting plate, an adjusting and limiting mechanism, a supporting mechanism and a clamping and adapting mechanism, wherein a positioning hole is arranged in the middle of the mounting plate, and the adjusting and limiting mechanism is located above the mounting plate; The adjustment and limiting mechanism includes two columns, a top plate, a limiting frame, an outer rotating cylinder, an inner moving cylinder and a driving assembly. The two columns are respectively located on both sides of the mounting plate and the bottoms are fixedly connected to the supporting mechanism. The tops of the columns are connected to the top plates, and a first through hole is provided in the middle of the top plates. The outer rotating cylinder is clamped at the first through hole and is rotatably connected. The outer rotating cylinder has an internal thread, and the inner moving cylinder has an external thread. The inner moving cylinder is located in the outer rotating cylinder and the external thread and the internal thread are matched. The driving assembly is used to drive the outer rotating cylinder to rotate so as to drive the inner moving cylinder to rise and fall. A second through hole is provided in the middle of the limit frame, and the second through hole is fixedly connected to the upper end of the outer circumferential surface of the inner movable cylinder. An anti-swing component is also provided between the limit frame and the top plate, and the anti-swing component is used to prevent the limit frame from shaking horizontally. The clamping adapter mechanism is provided on both sides of the mounting plate, and the clamping adapter mechanism is used to clamp the surface of the area to be measured.

2. A pile foundation core drilling detection auxiliary device according to claim 1, characterized in that: The adjustment and limiting mechanism also includes a connecting plate, which is located below the top plate. A third through hole is provided in the middle of the connecting plate. Both sides of the connecting plate are connected to the columns. The driving assembly includes a driving motor, which is arranged on the connecting plate. A shaft key at the output end of the driving motor is connected to a gear. The outer rotating cylinder is provided with a gear ring, and the gear and the gear ring are meshed.

3. A pile foundation core drilling detection auxiliary device according to claim 1, characterized in that: The anti-sway assembly includes two extension plates and two movable limiting rods. The two extension plates are connected to both sides of the limiting frame. The lower surface of the extension plate is fixedly provided with a movable limiting rod. Both sides of the top plate are provided with through holes, and the movable limiting rod passes through the through holes.

4. The pile foundation core drilling detection auxiliary device according to claim 1, characterized in that: The supporting mechanism comprises two transverse plates, which are fixedly mounted on two sides of the mounting plate. The outer ends of the transverse plates are rotatably connected to a rotating plate, and the bottom ends of the rotating plates are rotatably connected to a mounting seat.

5. The pile foundation core drilling detection auxiliary device according to claim 1, characterized in that: The clamping adapter mechanism includes two groups of mounting components, two groups of locking components and two groups of extension components. The two groups of mounting components are arranged on both sides of the mounting plate. The extension components are arranged inside the mounting components and are slidably connected. The ends of the extension components can clamp the side walls of the area to be measured. The locking components are used to limit the displacement of the extension components after clamping.

6. A pile foundation core drilling detection auxiliary device according to claim 5, characterized in that: The installation component includes a connecting pipe, which is fixedly installed on the outer side wall of the installation plate. The connecting pipe is provided with a strip hole running through the upper and lower sides. The locking component is located in the strip hole and limits the extension component by abutting against it.

7. A pile foundation core drilling detection auxiliary device according to claim 6, characterized in that: The extension assembly comprises an extension rod, the extension rod is located inside the connecting pipe and is slidably connected, and an arc-shaped adapter plate is fixedly mounted on the end of the extension rod.

8. The pile foundation core drilling detection auxiliary device according to claim 7, characterized in that: The locking assembly includes a screw rod, which is fixedly installed on the upper surface of the extension rod and extends out of the strip hole. One end of the screw rod extending out of the strip hole is threadedly connected with a screw sleeve. A slider is fixedly installed at the bottom of the extension rod. The slider is located in the strip hole below the connecting pipe and is slidably connected.

9. The pile foundation core drilling detection auxiliary device according to claim 1, characterized in that: A positioning tube is arranged at the positioning hole of the mounting plate.

10. The pile foundation core drilling detection auxiliary device according to claim 1, characterized in that: A pile foundation core drilling detection method is also provided, comprising the following steps: S1. Adjust the clamping adapter mechanism so that it is clamped on the outer peripheral surface of the pile foundation so that the positioning hole of the mounting plate is aligned with the core drilling area; S2, the fixed support mechanism limits the horizontal displacement and vertical displacement of the entire regulating limit mechanism; S3, the coincidence of the axis of the inner moving cylinder, the axis of the positioning hole and the axis of the pre-drilled hole of the pile foundation to be tested is detected. After the detection is completed, the drill pipe is sleeved on the inner side wall of the inner moving cylinder and is limited in the horizontal direction. The outer rotating cylinder rotates to drive the inner moving cylinder to move downward, and the drill pipe moves downward with the inner moving cylinder until the drill pipe fits the surface of the core drilling area; S4. The drill pipe starts to drill the core and take out the sample to be tested.

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