Attached drilling equipment

Abstract

The present invention provides an attached drilling device, including a pile-attaching frame, on which a core drilling mechanism is arranged, and after the drilling device is attached to the pile and fixed, core drilling sampling is performed. The device of the present invention can not only perform core drilling sampling at any time after the maintenance of the column pile is completed, but also creates a precedent for core drilling sampling after the maintenance of the column pile is completed or the main structure is completed. It is particularly suitable for core drilling sampling after the main structure is completed, and will not be affected by objects such as the column pile, support measures, etc. during the construction process. The device of the present invention has excellent drilling performance and can also be used in geological exploration, oil drilling and other fields.

Description

Technical Field

[0001] The invention relates to drilling equipment, in particular to an attached drilling equipment. Background Art

[0002] There are many types of drilling equipment, such as manual drilling equipment, pneumatic drilling equipment, and hydraulic drilling equipment (such as SCZ hydraulic drilling rig). Manual drilling equipment is easy to carry and transport, but its drilling depth is mostly less than 1 meter; pneumatic drilling equipment and hydraulic drilling equipment have a larger drilling depth, and most of these equipment are used in geological exploration, but their structure is complex and bulky, and most of them weigh 1 ton or more. In addition, hydraulic drilling equipment is also commonly used in pile foundation testing in the construction field of houses, bridges, etc. According to the "Technical Specifications for Building Pile Foundation Testing" (JGJ106-2014), the main methods for pile foundation testing are static load test, core drilling method, low strain method, high strain method, and acoustic wave transmission method. Among them, the core drilling method has the characteristics of scientific, intuitive, and practical, and is widely used in the detection of concrete cast-in-place piles. At present, the equipment used for pile foundation testing and sampling using the core drilling method mainly includes SCZ hydraulic drilling rigs and XY-1A high-speed drilling rigs. Due to the space limitations of pile foundations and column piles, whether using an SCZ hydraulic drill rig or an XY-1A high-speed drill rig, or other existing drilling rig models, they will be affected by objects such as column piles and support measures, and core sampling can only be performed before pouring column piles. Summary of the invention

[0003] The object of the present invention is to provide an attached drilling device, by which core sampling can be carried out at any time after the maintenance of the pile is completed.

[0004] In order to achieve the above object, the present invention adopts the following technical solution.

[0005] The utility model relates to an attached drilling equipment, comprising a pile-adhering frame, on which a core drilling mechanism is arranged, and core drilling sampling is performed after the drilling equipment is fixed to the pile.

[0006] The pile-adhering method described in the present invention refers to the attachment to the column wall, and the pile-adhering fixation method refers to the drilling equipment being attached to the column wall and fixed on the column wall. Those skilled in the art know that the pile foundation is below, and the column pile is located on the pile foundation. Therefore, unless otherwise specified, the pile-adhering fixation method described in the present invention refers to the drilling equipment's drill bit and drill rod being vertically downward toward the pile foundation, so that the core sampling can be performed vertically downward.

[0007] Furthermore, the core drilling mechanism can slide up and down along the pile-adhering frame, and can be limited at a corresponding height position as required.

[0008] Furthermore, the outer wall of the drill bit of the core drilling mechanism may be close to the column pile wall.

[0009] Furthermore, the pile-adhering frame comprises a pile-adhering beam, on which a displacement mechanism is arranged, and the core drilling mechanism realizes upward and downward sliding and position limiting through the displacement mechanism.

[0010] In order to improve the stability of the drilling equipment, the displacement mechanism adopts a gear rack transmission mechanism or a chain transmission mechanism.

[0011] In order to further improve the stability of the drilling equipment, the displacement mechanism is a gear rack transmission mechanism, including two rows of racks arranged in parallel, and two gears meshing with the two rows of racks respectively; the two rows of racks are fixed on two columns respectively, and the two columns are connected to the pile beam; the two gears are arranged on a rotating shaft, and the two ends of the rotating shaft are respectively connected to two slides through bearings, and the two slides are respectively arranged on the two columns and can slide up and down along the columns; the core drilling mechanism is arranged on the slide, and when the rotating shaft rotates, the rotating shaft drives the gear to rotate so that the gear is displaced relative to the rack, and at the same time drives the slide to slide along the column, and the sliding of the slide drives the core drilling mechanism to move synchronously.

[0012] In order to further improve the stability of the drilling equipment, two bearings are respectively arranged at both ends of the rotating shaft, and the gear 1 on the rotating shaft is respectively located between the two bearings.

[0013] In order to further improve the stability of the drilling equipment, the two columns are connected into a whole through a connecting beam.

[0014] In order to facilitate the lengthening, removal of the drill rod and the removal of the sample core, the column and the core drilling mechanism can be turned over synchronously.

[0015] Preferably, the two ends of the two columns and the two ends of the connecting beam are respectively mounted on two rotating shafts three, and the two ends of the rotating shaft three are respectively connected to the pile-adhering beam through locking structures, and when all the locking structures are in a locked state, the rotating shaft three is fixedly connected to the pile-adhering beam; when the locking structures at both ends of one of the columns are in an unlocked state and the locking structures at both ends of the other column are in a locked state, the rotating shaft three, the column and the core drilling mechanism on the unlocked state side can be flipped around the rotating shaft three on the locked state side.

[0016] Furthermore, the displacement mechanism also includes a limiting structure for fixing the slide seat on the column.

[0017] Preferably, the limiting structure includes a receiving groove arranged on the slide, a tooth block and a clamping block are arranged in the receiving groove and above the rack, the tooth block is connected to the slide through the second rotating shaft, the tooth block can be flipped around the second rotating shaft under the action of external force, a spring column is arranged at one end of the clamping block and the other end is an inclined surface, the spring column is movable through the hole on the slide and then connected to the pull ring, a spring is sleeved on the spring column, one end of the spring abuts against the clamping block and the other end abuts against the side wall of the receiving groove; the clamping block is made to slide along the receiving groove by pulling the pull ring, and the spring is in a compressed state at the same time; after the pull ring is released, the spring is reset and pushes the clamping block to slide along the receiving groove.

[0018] During use, if you need to limit (fix) the slide seat on the column, you can first pull the pull ring to make the block slide along the receiving groove, then move the tooth block to mesh with the rack, and then release the pull ring. The block will reset and clamp the tooth block under the elastic force of the spring; you can also directly press the tooth block down to make the end face of the tooth block slide down along the inclined surface of the block to a suitable position and then clamp the tooth block. If you need to release the limit, you only need to pull the pull ring to make the block slide along the receiving groove, then move the tooth block to separate the tooth block from the rack, and then release the pull ring.

[0019] Furthermore, the core drilling mechanism includes: a power system, a main gear is arranged on the output shaft of the power system, the main gear meshes with a driven gear, the driven gear is sleeved on the rotating shaft 4, a drill rod mounting piece is arranged on the rotating shaft 4, and the drill rod mounting piece is connected to the drill rod; the power system drives the main gear to rotate, thereby driving the driven gear and the rotating shaft 4 to rotate, and the rotation of the rotating shaft 4 drives the drill rod mounting piece and the drill rod to rotate synchronously. Preferably, the power system adopts a motor, and the motor is fixed on the slide seat through a mounting seat.

[0020] In order to facilitate the adjustment of the position of the drilling equipment, a handle is provided on the rotating shaft 1 for driving the rotating shaft 1 to rotate.

[0021] According to a preferred embodiment of the present invention, an operating rod and an outer ratchet can be sleeved on a rotating shaft. The outer ratchet is located in a socket at the front end of the operating rod. A pawl that cooperates with the outer ratchet is movably provided at a position close to the outer ratchet. The engagement and separation of the pawl and the outer ratchet are controlled by a cable.

[0022] Due to the adoption of the above technical solution, the present invention has the following beneficial effects.

[0023] The equipment of the present invention can not only perform core drilling sampling at any time after the maintenance of the columns and piles is completed, but also creates a precedent for core drilling sampling after the maintenance of the columns and piles is completed or the main structure is completed. It is particularly suitable for core drilling sampling after the main structure is completed and will not be affected by objects such as columns and piles, supporting measures, etc. during the construction process (currently no existing drilling equipment can perform core drilling sampling after the main structure is completed), and can perform core drilling sampling on any column and pile, and is not limited by any standard floor space / clearance height.

[0024] The equipment of the present invention adopts a surface-guided adjustment method, so that the drilling accuracy is high and the drilling stroke is long. The equipment of the present invention has excellent drilling performance and can also be used in the fields of geological exploration, oil drilling, etc. The drilling depth of a hole with a diameter of 100mm can reach 75 meters by using the equipment of the present invention to drill a hole with a diameter of 75mm; the drilling depth of a hole with a diameter of 75mm can reach 100 meters by using the equipment of the present invention to drill a hole with a diameter of 75mm.

[0025] By adopting the device of the present invention, drilling can be performed with the outer wall of the drill bit close to the wall of the column pile, which is impossible to achieve with any existing drilling equipment.

[0026] The equipment of the present invention has good stability and light weight, with a total weight of about 100Kg (only about 30Kg without the power system), which is about 1 / 10 (1 / 30) of the weight of the existing SCZ hydraulic drilling rig / XY-1A high-speed drilling rig. It can be moved and transported at the same site using a cart, which is very convenient, while the existing SCZ hydraulic drilling rig / XY-1A high-speed drilling rig must be moved and transported using a crane.

[0027] The device of the present invention is easy to operate, and 1-2 operators can complete the core sampling. When installing, it only needs to drill a few bolt holes on the column pile, and then use expansion bolts to fix the device. No mechanical equipment assistance is required during disassembly.

[0028] The core drilling mechanism of the device of the present invention can be turned over, which is not only convenient for lengthening the drill rod, removing the drill rod and removing the sample core, but also can save the time for core drilling and sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of an attached drilling device in an embodiment;

[0030] Figure 2 yes Figure 1 A magnified image of the middle part;

[0031] Figure 3 yes Figure 1 A partial schematic diagram of the core drilling mechanism of the equipment in the middle;

[0032] Figure 4 yes Figure 1 Schematic diagram of the equipment's rotating shaft 1, gear 1, bearing, gear 1 and rack;

[0033] Figure 5 yes Figure 1 Schematic diagram of the card block of the device in the middle;

[0034] Figure 6 1 is a diagram of the attached drilling equipment in the embodiment in the use state (adhering to the column pile wall and fixed on the column pile wall). DETAILED DESCRIPTION

[0035] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but the description of the following embodiments is only used to help understand the principle and core idea of ​​the present invention, and is not intended to limit the scope of protection of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, improvements made to the present invention also fall within the scope of protection of the claims of the present invention. Example

[0036] The utility model relates to an attached drilling equipment, comprising a pile-adhering frame, on which a core drilling mechanism is arranged, and core drilling sampling is performed after the drilling equipment is fixed to the pile.

[0037] The core drilling mechanism can slide up and down along the pile-adhering frame, and can be limited at a corresponding height position as required.

[0038] like Figure 1 As shown, the pile-adhering frame includes a pile-adhering beam 7, on which a displacement mechanism is provided, and the core drilling mechanism achieves up-and-down sliding and position limiting through the displacement mechanism.

[0039] Preferably, the displacement mechanism adopts a rack and pinion transmission mechanism or a chain transmission mechanism.

[0040] In this embodiment, Figure 1 and Figure 4 As shown, the displacement mechanism is a gear rack transmission mechanism, including two rows of racks 1 arranged in parallel, and two gears 28 respectively meshing with the two rows of racks 1; the two rows of racks 1 are respectively fixed on two columns 2, and the two columns 2 are connected to the pile beam 7; the two gears 28 are arranged on a rotating shaft 13, and the two ends of the rotating shaft 13 are respectively connected to two slides 12 through bearings 27, and the two slides 12 are respectively arranged on the two columns 2 and can slide up and down along the columns 2; the core drilling mechanism is arranged on the slide 12, and when the rotating shaft 13 rotates, the rotating shaft 13 drives the gear 28 to rotate so that the gear 28 is displaced relative to the rack 1, and at the same time drives the slide 12 to slide along the column 2, and the sliding of the slide 12 drives the core drilling mechanism to move synchronously.

[0041] In this embodiment, two bearings 27 are respectively disposed at both ends of the rotating shaft 13 , and the gear 28 on the rotating shaft 13 is respectively located between the two bearings 27 .

[0042] In this embodiment, the two columns 2 are connected into a whole by the connecting beam 3, and the columns 2 and the core drilling mechanism can be turned over synchronously. The two ends of the two columns 2 and the two ends of the connecting beam 3 are respectively sleeved on the rotating shaft 3 5, and the two ends of the rotating shaft 3 5 are respectively connected to the pile-attaching beam 7 through the locking structure 4, and when all the locking structures 4 are in the locked state, the rotating shaft 3 5 is fixedly connected to the pile-attaching beam 7, and when the locking structures 4 at the two ends of one of the columns 2 are in the unlocked state and the locking structures 4 at the two ends of the other column 2 are in the locked state, the rotating shaft 3 5 on the unlocked state side, the column 2 and the core drilling mechanism can be turned around the rotating shaft 3 5 on the locked state side.

[0043] In this embodiment, the displacement mechanism further includes a limiting structure 20 for fixing the slide 12 on the column 2. Figure 2 As shown, the limiting structure 20 includes a receiving groove 207 arranged on the slide 12, a tooth block 201 and a clamping block 202 are arranged in the receiving groove 207 and above the rack 1, the tooth block 201 is connected to the slide 12 through the second rotating shaft 203, the tooth block 201 can be turned around the second rotating shaft 203 under the action of external force, a spring column 208 is arranged at one end of the clamping block 202, and the other end is an inclined surface, the spring column 208 is movable through the hole on the slide 12 and then connected to the pull ring 205, a spring 204 is sleeved on the spring column 208, one end of the spring 204 abuts against the clamping block 202, and the other end abuts against the side wall of the receiving groove 207; the clamping block 202 is made to slide along the receiving groove 207 by pulling the pull ring 205, and the spring 204 is in a compressed state; after the pull ring 205 is released, the spring 204 is reset and pushes the clamping block 202 to slide along the receiving groove 207.

[0044] During use, if the slide 12 needs to be limited (fixed) on the column 2, the pull ring 205 can be pulled first to make the clamping block 202 slide along the receiving groove 207, and then the tooth block 201 can be moved (the tooth block 201 can be moved by moving the lever 206) to make the tooth block 201 mesh with the rack 1, and then the pull ring 205 is released, and the clamping block 202 is reset and clamped under the elastic force of the spring 204; or the tooth block 201 can be directly pressed down to make the end face of the tooth block 201 slide down along the inclined surface of the clamping block 202 to a suitable position and then the tooth block 201 is clamped. If the limit needs to be released, it is only necessary to pull the pull ring 205 first to make the clamping block 202 slide along the receiving groove 207, and then move the tooth block 201 to separate the tooth block 201 from the rack 1, and then release the pull ring 205.

[0045] In this embodiment, Figure 3As shown, the core drilling mechanism includes: a power system 19, the power system 19 adopts a motor that meets the power and speed requirements, and the motor is fixed on the slide 12 through a mounting seat 21. A main gear 23 is arranged on the output shaft 22 of the power system 19, the main gear 23 meshes with a driven gear 24, and the driven gear 24 is sleeved on a rotating shaft 25. A drill rod mounting member 18 is arranged on the rotating shaft 25, and the drill rod mounting member 18 is used to connect the drill rod 9. A cooling water interface 17 is also arranged on the drill rod mounting member 18. During the core drilling process, cooling water needs to be connected through the cooling water interface 17 to facilitate cooling of the drill rod 9 and the drill bit; the power system 19 drives the main gear 23 to rotate, thereby driving the driven gear 24 and the rotating shaft 25 to rotate, and the rotation of the rotating shaft 25 drives the drill rod mounting member 18 and the drill rod 9 to rotate synchronously.

[0046] In this embodiment, a handle is provided on the rotating shaft 13 to drive the rotating shaft 13 to rotate. Figure 1 As shown, an operating rod 15 (the end of the operating rod 15 is movably mounted on the rotating shaft 13) and an outer ratchet 14 (the outer ratchet 14 is connected to the rotating shaft 13 through a keyway 29 and a key matched in the keyway 29) are sleeved on the rotating shaft 13. The outer ratchet 14 is located in the bayonet at the front end of the operating rod 15. A pawl 30 matched with the outer ratchet 14 is movably arranged at a position close to the outer ratchet 14. The engagement and separation of the pawl 30 and the outer ratchet 14 are controlled by a cable 16. One end of the cable 16 is connected to the pawl 30 and the other end is connected to a brake handle 31 (similar to a bicycle brake handle). When the operator squeezes the brake handle 31, the cable 16 drives the pawl 30 to separate from the outer ratchet 14. When the operator releases the brake handle 31, the pawl 30 is reset and meshes with the outer ratchet 14.

[0047] How to use Figure 6 As shown, specifically including:

[0048] (1) The attached drilling equipment is installed vertically on the wall of the column pile 10 above the pile foundation 11 to be sampled. Specifically, screw holes can be opened on the column pile 10, and then expansion bolts are used to fix the pile frame on the wall of the column pile 10 through the screw holes 6 on the column 2;

[0049] (2) Open the limiting structure 20, adjust the core drilling mechanism to a suitable height position by using the handle, and then lock the limiting structure 20, and install the first section of the drill rod 9 and the drill bit on the drill rod mounting member 18;

[0050] (3) Open the limit structure 20 again, adjust the core drilling mechanism to a suitable height position by using the handle, make the drill bit contact the surface of the sampling point, turn on the cooling water switch, start the core drilling mechanism to perform core sampling / drilling;

[0051] (4) After the first section of core sampling / drilling is completed, remove the first section of drill pipe and drill bit, unlock the locking structure 4, flip the core drilling mechanism to the side, use a winch or other hoist to lift the removed first section of drill pipe, drill bit and the sample core inside to the ground, and after taking out the sample core, put the first section of drill pipe and drill bit into the hole; reset the core drilling mechanism and lock the locking structure 4, open the limit structure 20, adjust the core drilling mechanism to a suitable height position by the handle, and add the second section of drill pipe to the first section of drill pipe to continue core sampling / drilling. After each section of core sampling / drilling is completed, the process of "removing the drill pipe - flipping the core drilling mechanism - coring - adding drill pipe" is executed until the drilling reaches the appropriate depth;

[0052] (5) Remove the attached drilling equipment and move to the next sampling point for sampling.

[0053] For "adjust the core drilling mechanism to a suitable height position through the handle", the specific operation is as follows:

[0054] First, pull the pull ring 205 to make the block 202 slide along the receiving groove 207, then move the tooth block 201 to separate the tooth block 201 from the rack 1, and then release the pull ring 205 to release the limit of the tooth block 201 on the slide seat 12;

[0055] The operating lever 15 is held by hand and the operation of "pressing down and lifting up" is continuously performed to move the core drilling mechanism to a suitable height position; during this process, the operating lever 15 rotates synchronously with the outer ratchet 14, thereby driving the rotating shaft 13 to rotate, and the rotating shaft 13 drives the gear 1 28 to rotate so that the gear 1 28 is displaced relative to the rack 1, and at the same time drives the slide 12 to slide along the column 2, and the sliding of the slide 12 drives the core drilling mechanism to move synchronously (at this stage, when the brake handle 31 is in a released state, the pawl 30 is engaged with the outer ratchet 14);

[0056] Then pull the pull ring 205 to make the clamping block 202 slide along the accommodating groove 207, and then move the tooth block 201 (the tooth block 201 can be moved by moving the lever 206) to make the tooth block 201 engage with the rack 1, and then release the pull ring 205, the clamping block 202 will return to its original position and clamp the tooth block 201 under the elastic force of the spring 204; you can also directly press down the tooth block 201, make the end face of the tooth block 201 slide down along the inclined surface of the clamping block 202 to a suitable position, and then clamp the tooth block 201, so as to limit (fix) the slide seat 12 at a suitable height position on the column 2.

[0057] Since the main part of the equipment is the core drilling mechanism (mainly including the motor, mounting seat, transmission shaft, gear) and the pile frame (the length of the column is not more than 2.5 meters, and the width is not more than the width of the column), its total weight is only about 100Kg, which is about 1 / 10 of the weight of the existing SCZ hydraulic drilling rig / XY-1A high-speed drilling rig. It can be moved and transported on the same site with a trolley, which is very convenient. Two operators can complete the core sampling. When installing, you only need to drill a few bolt holes on the column, and then use expansion bolts to fix the equipment. No mechanical equipment is required for disassembly.

[0058] It should be noted that the use of this attached drilling equipment can not only carry out core sampling at any time after the maintenance of the columns and piles is completed, but also can carry out core sampling of any columns and piles, without being restricted by any standard floor space / void height. This has created a precedent for core sampling after the maintenance of the columns and piles is completed or after the main structure is completed. It is particularly suitable for core sampling after the main structure is completed and will not be affected by objects such as columns, support measures, etc. during the construction process (currently, no existing drilling equipment can carry out core sampling after the main structure is completed).

[0059] The drilling mechanism of the equipment can be flipped, which is not only convenient for extending the drill rod, removing the drill rod and removing the sample core, but also can save the time of drilling core sampling. After the pile foundation sampling is completed, the drilling mechanism is flipped open, the drill rod is loosened from the drilling mechanism, and the drill rod and the pile foundation sample core are quickly taken out with the help of a winch or a fall chain, so there is no need to slowly and laboriously return the drill rod, thus greatly saving time.

[0060] The equipment adopts a surface-oriented adjustment method, which makes the drilling accuracy high and the drilling stroke long. The equipment has excellent drilling performance and can also be used in geological exploration, oil drilling and other fields. When it is used to drill a hole with a diameter of 100mm, the drilling depth can reach 75 meters; when it is used to drill a hole with a diameter of 75mm, the drilling depth can reach 100 meters.

[0061] In the present invention, the distance between the axis of the drill rod and the wall and the thickness of the pile-adhering beam 7 can be reasonably designed, so that the outer wall of the drill rod can be drilled while being close to or adjacent to the pile wall, which cannot be achieved by any existing drilling equipment.

Claims

1. An attached drilling equipment, characterized in that: The device comprises a pile-attaching frame, on which a core drilling mechanism is arranged, and after the drilling device is attached to the pile and fixed, core drilling sampling is performed; the core drilling mechanism slides up and down along the pile-attaching frame, and is limited at a corresponding height position as required; the outer wall of the drill bit of the core drilling mechanism is attached to the wall of the column pile; the pile-attaching frame comprises a pile-attaching beam (7), on which a displacement mechanism is arranged, and the core drilling mechanism achieves up and down sliding and limitation through the displacement mechanism; The displacement mechanism is a gear rack transmission mechanism, comprising two rows of racks (1) arranged in parallel, and two gears (28) respectively meshing with the two rows of racks (1); the two rows of racks (1) are respectively fixed on two columns (2), the two columns (2) are connected to form a whole through a connecting beam (3), the columns (2) and the core drilling mechanism are turned synchronously, and the two columns (2) are connected to the pile-attaching beam (7); the two gears (28) are arranged on the rotating shaft (13), and two bearings (27) are respectively arranged at both ends of the rotating shaft (13), and the gears (28) on the rotating shaft (13) are arranged on the rotating shaft (13). ) are respectively located between two bearings (27), the two ends of the rotating shaft (13) are respectively connected to the two slides (12) through the bearings (27), the two slides (12) are respectively arranged on the two columns (2) and slide up and down along the columns (2); the core drilling mechanism is arranged on the slide (12), when the rotating shaft (13) rotates, the rotating shaft (13) drives the gear (28) to rotate so that the gear (28) is displaced relative to the rack (1), and at the same time drives the slide (12) to slide along the column (2), and the sliding of the slide (12) drives the core drilling mechanism to move synchronously; The displacement mechanism further comprises a limiting structure (20) for fixing the slide (12) on the column (2); the limiting structure (20) comprises a receiving groove (207) arranged on the slide (12); a tooth block (201) and a clamping block (202) are arranged in the receiving groove (207) and above the rack (1); the tooth block (201) is connected to the slide (12) via a second rotating shaft (203); the tooth block (201) turns around the second rotating shaft (203) under the action of an external force; a spring column (208) is arranged at one end of the clamping block (202) and a spring column (208) is arranged at the other end. The spring column (208) is an inclined surface, and is connected to the pull ring (205) after being movable through the hole on the slide seat (12). A spring (204) is sleeved on the spring column (208), and one end of the spring (204) abuts against the clamping block (202) and the other end abuts against the side wall of the receiving groove (207). By pulling the pull ring (205), the clamping block (202) slides along the receiving groove (207), and the spring (204) is in a compressed state. After the pull ring (205) is released, the spring (204) is reset and pushes the clamping block (202) to slide along the receiving groove (207). The two ends of the two columns (2) and the two ends of the connecting beam (3) are respectively sleeved on the rotating shaft three (5), and the two ends of the rotating shaft three (5) are respectively connected to the pile-adhering beam (7) through the locking structures (4), and when all the locking structures (4) are in a locked state, the rotating shaft three (5) is fixedly connected to the pile-adhering beam (7), and when the locking structures (4) at the two ends of one of the columns (2) are in an unlocked state and the locking structures (4) at the two ends of the other column (2) are in a locked state, the rotating shaft three (5) on the unlocked state side, the column (2) and the core drilling mechanism are turned around the rotating shaft three (5) on the locked state side; The core drilling mechanism comprises: a power system (19), the power system (19) adopts a motor, the motor is fixed on the slide seat (12) through a mounting seat (21), a main gear (23) is arranged on the output shaft (22) of the power system (19), the main gear (23) meshes with a driven gear (24), the driven gear (24) is sleeved on a rotating shaft (25), a drill rod mounting member (18) is arranged on the rotating shaft (25), and the drill rod mounting member (18) is used to connect the drill rod (9); the power system (19) drives the main gear (23) to rotate, thereby driving the driven gear (24) and the rotating shaft (25) to rotate, and the rotation of the rotating shaft (25) drives the drill rod mounting member (18) and the drill rod (9) to rotate synchronously; A handle for driving the rotating shaft (13) to rotate is arranged on the rotating shaft (13), an operating rod (15) and an outer ratchet (14) are sleeved on the rotating shaft (13), the end of the operating rod (15) is movably sleeved on the rotating shaft (13), the outer ratchet (14) is connected to the rotating shaft (13) through a key slot (29) and a key matched in the key slot (29), the outer ratchet (14) is located in a bayonet at the front end of the operating rod (15), a ratchet pawl (30) matched with the outer ratchet (14) is movably arranged at a position close to the outer ratchet (14), the engagement and separation of the ratchet pawl (30) and the outer ratchet (14) are controlled by a cable (16), one end of the cable (16) is connected to the ratchet pawl (30), and the other end of the cable (16) is connected to the brake handle (31).

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