Holding and clamping type coring device and using method thereof

Abstract

The invention discloses a clamping type coring device and a using method thereof, and relates to the technical field of foundation pile construction, the coring device comprises bottom frames symmetrically arranged on the two sides in parallel, and U-shaped frames are fixedly arranged on the bottom frames on the two sides; a winding wheel is rotatably arranged on the U-shaped frame, a rope is wound on the winding wheel, and a first motor used for driving the winding wheel to rotate is further fixedly arranged on the U-shaped frame; the other end of the rope is fixed to a coring support, and a coring pipe is arranged on one side of the coring support. Wherein a positioning ring used for being arranged on the outer side of a foundation pile in a sleeving mode is further fixedly arranged at the bottom of the coring support, the positioning ring and the coring pipe are coaxially arranged, and a plurality of sets of positioning bases used for positioning the foundation pile are arranged on the inner side of the positioning ring in a circumferential array mode; the coring pipe can move along the axis of the center end of the foundation pile all the time, the coring support and the positioning ring are mutually fixed, and in the coring process, even if vibration occurs, due to the fact that the position of the foundation pile is fixed, the stability of the coring support is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of pile foundation construction, and in particular to a clamping type coring device and a use method thereof. Background Art

[0002] Pile coring, commonly known as core drilling in the field of civil engineering, refers to drilling a core sample at a certain depth on the surface of the pile body, and then analyzing and evaluating the integrity of the pile body based on the condition of the core sample. In the process of coring piles, a pile coring machine is required. The working principle of the pile coring machine mainly utilizes the low tensile and shear strength of rock. By applying external force to break the "core sample", the purpose of coring and drilling is achieved.

[0003] In the process of coring the pile foundation, in order to ensure the accuracy of the core sample detection, it is necessary to sample along the center end of the pile foundation as much as possible. The position close to the center of the pile body is usually more representative of the overall performance. This is because the concrete at the center of the pile body is less affected by external factors during the pouring and curing process, and can better maintain its original performance. In addition, the pile foundation usually contains reinforcing materials such as steel bars, which will interfere with the sampling. If the sampling position is close to the steel bars, the sample taken out may contain steel bar fragments or be affected by the steel bars, thereby affecting the accuracy of the test results.

[0004] Correspondingly, when the pile coring equipment is working, the coring tube needs to be drilled downward perpendicular to the ground. If the drill bit is not pushed downward along the center, the borehole will be tilted. If the coring tube is not pushed downward along the center line, the borehole will deviate from the predetermined trajectory, which will not only affect the accuracy of the sampling, but also damage the steel cage when it is severely tilted, causing losses.

[0005] For example, the patent document with the publication number CN112323875B discloses a pile foundation detection device and a detection method using the device, and also discloses the setting of a fixing tube and a detection component, which can detect whether the drill rod is offset in real time to ensure that the drill rod is always in a vertical state, thereby achieving the effect of improving the integrity of the drill core; It can be seen that in the prior art, in order to accurately position the fixed tube, it is necessary to use a level to pre-position each group of horizontal rods, which is a cumbersome process. In addition, in actual application, the ground at the pile construction site is usually rugged, which further increases the difficulty of horizontal positioning and cannot achieve the effect of rapid positioning. At the same time, during the coring process, due to the effect of vibration, when the ground soil around the pile is relatively moist, the horizontal rods are easily shaken due to unstable positioning, which will cause the sampling tube to shift. Summary of the invention

[0006] The purpose of the present invention is to provide a clamping coring device and a method for using the same to solve the following technical problems: 1) The existing technology requires the use of a level to pre-position each bracket, which is a cumbersome process; 2) During the sampling process, since the bracket is fixed on the soil, when the soil is relatively moist, the bracket will vibrate due to unstable positioning, affecting the normal movement of the sampling tube.

[0007] The purpose of the present invention can be achieved through the following technical solutions: A clamping type coring device comprises two base frames arranged in parallel and symmetrical manner on both sides, and U-shaped frames are fixedly arranged on the two base frames; A winding wheel is rotatably arranged on the U-shaped frame, a rope is wound on the winding wheel, and a first motor for driving the winding wheel to rotate is fixedly arranged on the U-shaped frame; the other end of the rope is fixed to the coring bracket, and a coring tube is arranged on one side of the coring bracket; The bottom of the coring bracket is also fixedly provided with a positioning ring for sleeved on the outside of the foundation pile, the positioning ring is coaxially arranged with the coring tube, and a plurality of groups of positioning seats for positioning the foundation pile are arranged in a circumferential array inside the positioning ring; The positioning ring is also provided with a positioning module, and the positioning module is used to drive each group of positioning seats to synchronously move toward or away from the axis of the positioning ring.

[0008] Preferably, a screw is rotatably arranged at the bottom of the coring bracket, the screw is fixed to the output end of the second motor fixedly arranged on the coring bracket, a coring support is spirally sleeved on the screw, the coring tube is rotatably arranged on one side of the bottom of the coring support, and a third motor is also fixedly arranged on the coring support, and the output end of the third motor is transmission connected to the coring tube through a sprocket mechanism.

[0009] Preferably, one end of the screw rod away from the coring bracket is rotatably connected to the limiting bracket, and the limiting bracket is fixed to the positioning ring through the connecting bracket; Wherein, guide rods are symmetrically fixedly arranged on both sides of the limit frame, and both ends of the core support are slidably connected to the guide rods.

[0010] Preferably, the inner surface of the positioning ring is fixedly provided with a plurality of guide seats corresponding to the positioning seats in a circumferential array, the guide seats are provided with guide grooves, pins are slidably embedded in the guide grooves, and a positioning plate fixedly provided on the pins and fixedly connected to the positioning seats.

[0011] Preferably, the positioning module comprises a driving ring rotatably arranged on the positioning ring, the driving ring and the positioning ring are arranged coaxially, a plurality of arc grooves corresponding to the guide grooves are arranged in a circumferential array on the driving ring, the arc grooves extend from the proximal ring center end to the distal ring center end, and the pin shaft is slidably arranged in the arc groove; Among them, an annular tooth is fixedly arranged on the outer edge surface of the driving ring, a fourth motor is fixedly arranged on the bottom of one side of the positioning ring, and a gear meshing with the annular tooth is fixedly arranged on the output end of the fourth motor.

[0012] Preferably, each of the positioning seats is provided with at least two groups of limiting grooves in the vertical direction toward the axis of the positioning ring, a first support is slidably embedded in the limiting groove, a second support is fixedly arranged at the bottom of the limiting groove, a first electrode sheet is fixedly arranged on one side of the first support toward the second support, a second electrode sheet is correspondingly arranged on the second support, and the first electrode sheet and the second electrode sheet are electrically connected to the alarm device through a controller.

[0013] Preferably, the limiting cylinders are symmetrically arranged on both sides of the limiting groove, the limiting seats are fixedly arranged on both sides of the first support, and the limiting cylinders are slidably inserted with limiting rods fixed to the limiting seats; Wherein, a first spring is arranged on the limiting rod.

[0014] Preferably, a limit stopper is fixedly arranged on each of the positioning seats in the direction of the axis of the positioning ring, a through groove is provided on the limit stopper, a wedge-shaped seat is slidably embedded in the through groove, an inclined guide surface is provided at the bottom of the wedge-shaped seat in the direction of the axis of the positioning ring, and a third electrode sheet is fixedly arranged on the wedge-shaped seat; Among them, an L-shaped limit frame is fixedly arranged on the positioning seat, a third support is fixedly arranged at the end of the L-shaped limit frame, a fourth electrode sheet is fixedly arranged on one end of the third support facing the limit stop seat, and the third electrode sheet and the fourth electrode sheet are electrically connected to the alarm through the controller.

[0015] Preferably, a guide column is fixedly arranged on the limit stop seat, and a guide plate fixed to the wedge seat is slidably arranged on the guide column; Wherein, a second spring is provided on the guide column.

[0016] A method for using a clamping coring device comprises the following steps: Move the coring device to one side of the foundation pile so that the two side frames are located on both sides of the foundation pile respectively; The first motor is started to drive the winding wheel to rotate for unwinding operation, and the rope drives the coring bracket to descend, so that the positioning ring descends to the outside of the foundation pile; The positioning module synchronously drives each positioning seat to move toward the direction close to the axial end of the positioning ring. Since the positioning seats are circumferentially arranged in the positioning ring, when each positioning seat is in close contact with the outer edge surface of the pile, the axial end of the positioning ring coincides with the central end axis of the pile. The core pipe is driven downward along the center end axis of the pile to drill and core.

[0017] Beneficial effects of the present invention: (1) Before sampling the pile foundation, the present invention first moves the coring device to one side of the pile foundation so that the two side frames are respectively located on the two sides of the pile foundation. Then, the first motor is started to drive the winding wheel to rotate and perform the unwinding operation, so as to drive the coring bracket to descend through the rope, so that the positioning ring descends to the outside of the pile foundation, and then the positioning module synchronously drives each positioning seat to move in the direction close to the axial end of the positioning ring. When each positioning seat is in close contact with the outer edge surface of the pile foundation, since the positioning seat is circumferentially arranged in the positioning ring, the axial end of the positioning ring coincides with the central end axis of the pile foundation, that is, the coring tube coincides with the central end axis of the pile foundation. When coring, the coring tube can always move along the central end axis of the pile foundation. At the same time, since each positioning seat is clamped on the pile foundation, and the coring bracket and the positioning ring are fixed to each other, during the coring process, even if vibration occurs, since the position of the pile foundation is also fixed, thereby ensuring the stability of the coring bracket, the coring tube will not be offset and can always move along the central end axis of the pile foundation. (2) When each positioning seat in the present invention moves toward the direction of the pile, the first support seat first abuts against the outer edge surface of the pile. As the positioning seat continues to move, the first support seat can be pressed to move toward the limiting groove until the first electrode sheet and the second electrode sheet are attached and an electrical signal is generated. The electrical signal can be sent to the alarm device through the controller, and then it can be judged whether the positioning seat and the pile are clamped tightly. There are multiple groups of positioning seats, so the alarm devices corresponding to each positioning seat generate alarm signals to indicate that the clamping is completed. If any group of alarm devices does not generate a warning signal, it is necessary to clamp again. Since the positioning seat has a certain length, the present invention can judge whether the positioning seat is completely attached to the pile by opening at least two groups of limiting grooves on each group of positioning seats. (3) When each positioning seat in the present invention moves toward the direction of the pile, the inclined guide surface of the wedge seat first contacts the top surface of the pile. As the positioning seat continues to move, based on the limiting effect of the top surface of the pile, the wedge seat can be pushed up until the third electrode sheet and the fourth electrode sheet are in contact and generate an electrical signal. The electrical signal can be sent to the alarm device through the controller, and then it can be determined whether the limit stop seat and the top surface of the pile are in contact. The present invention can indicate that the clamping is completed only when it is determined that the alarm devices corresponding to each limit stop seat have generated an alarm signal. If any group of alarm devices does not generate an alarm signal, it is necessary to clamp again. By setting the limit stop seat, the present invention can further improve the clamping tightness between the positioning seat and the pile to avoid the phenomenon of positioning seat displacement caused by excessive vibration during coring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a structural schematic diagram of a clamping type coring device of the present invention; Figure 2It is a structural schematic diagram of a winding wheel in a clamping type coring device of the present invention; Figure 3 It is a structural schematic diagram of a core sampling tube in a clamping type core sampling device of the present invention; Figure 4 It is a structural schematic diagram of a positioning ring in a clamping type coring device of the present invention; Figure 5 It is a schematic diagram of the cross-section structure of a positioning ring in a clamping type coring device of the present invention; Figure 6 It is a schematic diagram of the cross-section structure of a positioning seat in a clamping type coring device of the present invention; Figure 7 It is a structural schematic diagram of a clamping type coring device of the present invention when positioning a circular foundation pile; Figure 8 It is a structural schematic diagram of a clamping type coring device of the present invention when positioning a square foundation pile; Fig. 9 It is a structural schematic diagram of a limit tube in a clamping type coring device of the present invention; Fig.10 It is a structural schematic diagram of a clamping type coring device of the present invention before the positioning seat clamps; Fig.11 It is a schematic structural diagram of a clamping-type coring device of the present invention after a positioning seat is clamped.

[0020] In the figure: 1, pile; 2, base frame; 3, winding wheel; 4, coring support; 5, screw; 6, driving ring; 7, positioning seat; 8, limit stop seat; 201, U-shaped frame; 301, first motor; 302, rope; 401, second motor; 402, third motor; 403, guide rod; 404, coring support; 405, coring tube; 406, sprocket mechanism; 501, limit frame; 502, connecting frame; 503, guide seat; 504, guide groove; 505, limit protrusion; 601, positioning ring; 602, fourth motor; 603, gear; 604 , arc groove; 605, pin shaft; 606, positioning plate; 607, annular gear; 701, limiting groove; 702, first support; 703, second support; 704, second electrode sheet; 705, first electrode sheet; 706, limiting cylinder; 707, limiting rod; 708, first spring; 709, limiting seat; 801, through groove; 802, wedge-shaped seat; 803, inclined guide surface; 804, third electrode sheet; 805, fourth electrode sheet; 806, third support; 807, L-shaped limiting frame; 808, guide plate; 809, guide column; 810, second spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1 See also Figure 1 and Figure 2 As shown, the present invention is a clamping type coring device, including a base frame 2 arranged in parallel and symmetrically on both sides, and a U-shaped frame 201 is fixedly arranged on the base frame 2 on both sides; specifically, the base frame 2 and the U-shaped frame 201 are fixed by bolts or welding, and this embodiment does not limit the specific connection method between the two.

[0023] A winding wheel 3 is rotatably arranged on the U-shaped frame 201, and a rope 302 is wound on the winding wheel 3. A first motor 301 for driving the winding wheel 3 to rotate is also fixedly arranged on the U-shaped frame 201; specifically, in this embodiment, the first motor 301 drives the winding wheel 3 to rotate clockwise or counterclockwise, so as to achieve the effect of winding or unwinding the rope 302 on the winding wheel 3.

[0024] The other end of the rope 302 is fixed to the coring support 4, and a coring tube 405 for sampling is provided on one side of the coring support 4; Among them, a positioning ring 601 for sleeved on the outside of the foundation pile 1 is fixedly arranged at the bottom of the core bracket 4, and the positioning ring 601 is coaxially arranged with the core tube 405. A plurality of groups of positioning seats 7 for positioning the foundation pile 1 are arranged in a circumferential array inside the positioning ring 601. A positioning module is also arranged on the positioning ring 601, and the positioning module is used to drive each group of positioning seats 7 to synchronously move toward or away from the axial direction of the positioning ring 601; In this embodiment, the positioning seats 7 are arranged in four groups, and may also be arranged in six groups or eight groups, and the specific number is not limited; It can be explained that, before sampling the foundation pile 1, the present embodiment first moves the coring device to one side of the foundation pile 1, so that the two side frames 2 are respectively located on the two sides of the foundation pile 1, and then starts the first motor 301 to drive the winding wheel 3 to rotate for unwinding operation, so as to drive the coring bracket 4 to descend through the rope 302, so that the positioning ring 601 descends to the outside of the foundation pile 1, and then drives each positioning seat 7 to move toward the direction close to the axial end of the positioning ring 601 through the positioning module. When each positioning seat 7 is in close contact with the outer edge surface of the foundation pile 1, the axial end of the positioning ring 601 is in close contact with the foundation pile 1. The central end axis of the pile 1 coincides, which means that the core tube 405 coincides with the central end axis of the foundation pile 1. When coring, the core tube 405 always moves along the central end axis of the foundation pile 1. In this process, since each positioning seat 7 is clamped on the foundation pile 1, and the core bracket 4 and the positioning ring 601 are fixed to each other, during the coring process, even if vibration occurs, since the position of the foundation pile 1 is fixed, thereby ensuring the stability of the core bracket 4, the core tube 405 will not be offset and can always move along the central end axis of the foundation pile 1.

[0025] It should also be noted that, before the positioning seats 7 of this embodiment synchronously clamp toward the pile 1, although the base frame 2 is on a rough ground or the axial end of the positioning ring 601 does not coincide with the central end axis of the pile 1, as the positioning seats 7 move toward the pile 1, since the coring bracket 4 is pulled and fixed by the rope 302, the coring bracket 4 can move in any direction. Therefore, in this embodiment, the winding wheel 3 can be driven to rotate by the first motor 301 to unwind a certain length of rope 302. When the positioning seats 7 clamp the pile 1, the coring bracket 4 can move with the movement of the positioning seats 7 until each group of positioning seats 7 clamps the outer edge surface of the pile 1 in the circumferential direction and stops; In addition, before each positioning seat 7 of this embodiment clamps the pile 1, the construction personnel can pre-adjust the axis of the positioning ring 601 to be as close as possible to the axis of the central end of the pile 1, so that each positioning seat 7 can quickly clamp and position the pile 1.

[0026] See also Figure 7-Figure 8 The coring device of this embodiment can be applied to circular or square piles, and has a wider scope of application.

[0027] Example 2 Based on Example 1, please refer to Figure 3-Figure 4, a screw rod 5 is rotatably arranged at the bottom of the coring bracket 4, and the screw rod 5 is fixed to the output end of the second motor 401 fixedly arranged on the coring bracket 4, and a coring support 404 is spirally sleeved on the screw rod 5, and a coring tube 405 is rotatably arranged on one side of the bottom of the coring support 404. A third motor 402 is also fixedly arranged on the coring support 404, and the output end of the third motor 402 is connected to the coring tube 405 through a sprocket mechanism 406. It can be explained that in the coring process of this embodiment, the third motor 402 is first started, and the third motor 402 drives the coring tube 405 to rotate through the sprocket mechanism 406. During this process, the second motor 401 is started to drive the screw rod 5 to rotate, and the coring support 404 can synchronously drive the coring tube 405 to move during the movement of the screw rod 5, so as to drive the coring tube 405 to drill and coring downward along the central end axis of the pile 1 while rotating.

[0028] In this example, see Figure 1 The end of the screw rod 5 away from the core bracket 4 is rotatably connected to the limit bracket 501, and the limit bracket 501 is fixed to the positioning ring 601 through the connecting frame 502, wherein the two sides of the limit bracket 501 are symmetrically fixed with guide rods 403, and the two ends of the core support 404 are slidably connected to the guide rods 403; it should be noted that the core support 404 can synchronously slide along the guide rods 403 during the movement of the screw rod 5, so as to guide and limit the core support 404 and improve its stability during movement.

[0029] As a further solution of this embodiment, please refer to Figure 3-Figure 4 A plurality of guide seats 503 corresponding to the positioning seats 7 are fixedly arranged on the inner surface of the positioning ring 601 in a circumferential array, and a guide groove 504 is provided on the guide seat 503. A pin shaft 605 is slidably embedded in the guide groove 504, and a positioning plate 606 fixedly connected to the positioning seat 7 is fixedly arranged on the pin shaft 605; specifically, when the positioning module drives each positioning seat 7 to move synchronously, the positioning seat 7 can synchronously drive the pin shaft 605 to slide in the guide groove 504 through the positioning plate 606 to achieve the effect of guiding and limiting, thereby improving the stability of the positioning seat 7 during movement.

[0030] Correspondingly, a limiting protrusion 505 is fixedly arranged at the bottom end of the pin shaft 605 , and the diameter of the limiting protrusion 505 is larger than the groove width of the guide groove 504 to prevent the pin shaft 605 from being separated from the guide groove 504 .

[0031] See also Figure 3-Figure 5The positioning module includes a driving ring 6 rotatably arranged on the positioning ring 601, the driving ring 6 is coaxially arranged with the positioning ring 601, and a plurality of arc grooves 604 corresponding to the guide grooves 504 are arranged in a circumferential array on the driving ring 6, and the arc grooves 604 extend from the near ring center end to the far ring center end, and the pin 605 is slidably penetrated in the arc groove 604, wherein the outer edge surface of the driving ring 6 is fixedly arranged with an annular tooth 607, and the bottom of one side of the positioning ring 601 is fixedly arranged with a fourth motor 602, and the fourth motor 6 The output end of 02 is fixedly provided with a gear 603 meshing with the annular tooth 607; it can be explained that when driving the positioning seats 7 to move synchronously, the present embodiment first drives the gear 603 to rotate through the fourth motor 602, and the gear 603 can drive the driving ring 6 to rotate by meshing with the annular tooth 607. During the rotation of the driving ring 6, based on the limiting effect of the arc groove 604, the pin shaft 605 can be driven to slide in the guide groove 504, thereby achieving the effect of driving the positioning seats 7 to move synchronously.

[0032] See also Figure 5-Figure 6 as well as Fig. 9 , when driving each positioning seat 7 to clamp synchronously in the direction of the foundation pile 1, in order to ensure that each positioning seat 7 and the foundation pile 1 are clamped tightly, as a further solution of this embodiment, each positioning seat 7 is provided with at least two sets of limiting grooves 701 in the vertical direction in the direction of the axis of the positioning ring 601, and a first support 702 is slidably embedded in the limiting groove 701, and a second support 703 is fixedly arranged at the bottom of the limiting groove 701, and a first electrode sheet 705 is fixedly arranged on one side of the first support 702 close to the second support 703, and a second electrode sheet 704 is correspondingly arranged on the second support 703, and the first electrode sheet 705 and the second electrode sheet 704 are electrically connected to the alarm through the controller; it can be explained that in the initial state, it can be referred to Fig.10 The first support 702 protrudes to the outside of the limiting groove 701. When each positioning seat 7 is driven to move toward the direction of the pile 1, the first support 702 first abuts against the outer edge of the pile 1. As the positioning seat 7 continues to move, the first support 702 can be pressed to move toward the limiting groove 701 until the first electrode sheet 705 and the second electrode sheet 704 are attached and generate an electrical signal (see Fig.11 ), the electrical signal can be sent to the alarm through the controller, and then it can be determined whether the positioning seat 7 and the foundation pile 1 are clamped tightly; Specifically, since there are multiple groups of positioning seats 7 in this embodiment, the warning devices corresponding to each positioning seat 7 must generate warning signals to indicate that the clamping is completed. If any group of warning devices does not generate a warning signal, it is necessary to re-clamp. At the same time, since the positioning seat 7 has a certain length, by opening at least two groups of limit grooves 701 on each group of positioning seats 7, it can be determined whether the positioning seat 7 is completely in contact with the foundation pile 1.

[0033] After the sampling is completed, when the positioning seat 7 is separated from the pile 1, in order to facilitate the adjustment of the first support 702 to reset, in this embodiment, it can be referred to Fig. 9 , limiting cylinders 706 are symmetrically fixed on both sides of the limiting groove 701, limiting seats 709 are fixed on both sides of the first support 702, and a limiting rod 707 fixed to the limiting seat 709 is slidably inserted in the limiting cylinder 706, wherein a first spring 708 is arranged on the limiting rod 707, one end of the first spring 708 is fixed to the limiting cylinder 706, and the other end is fixed to the limiting seat 709; it can be explained that when the first support 702 of this embodiment slides in the limiting groove 701, the limiting seat 709 can drive the limiting rod 707 to slide on one side of the limiting cylinder 706, thereby compressing the first spring 708 and generating elastic force, so as to facilitate the subsequent driving of the first support 702 to reset.

[0034] In addition, when each positioning seat 7 clamps the pile 1, since the first spring 708 gives the first support 702 an elastic force to move away from the second support 703, the friction between the positioning seat 7 and the pile 1 can be further increased, making the clamping tighter.

[0035] When each positioning seat 7 clamps the foundation pile 1, in order to further improve the accuracy of clamping, in the present embodiment, a limit stopper 8 is fixedly arranged on each positioning seat 7 in the direction of the axis of the positioning ring 601, a through groove 801 is provided on the limit stopper 8, a wedge seat 802 is slidably embedded in the through groove 801, an inclined guide surface 803 is provided at the bottom of the wedge seat 802 in the direction of the axis of the positioning ring 601, and a third electrode sheet 804 is fixedly arranged on the wedge seat 802, wherein an L-shaped limit frame 807 is also fixedly arranged on the positioning seat 7, a third support 806 is fixedly arranged at the end of the L-shaped limit frame 807, a fourth electrode sheet 805 is fixedly arranged on the third support 806 toward one end of the limit stopper 8, and the third electrode sheet 804 and the fourth electrode sheet 805 are electrically connected to the alarm through the controller; it can be explained that, reference can be made to Figure 10-11 In the initial state, the wedge-shaped seat 802 protrudes downward to the outside of the through groove 801. When the positioning seat 7 moves toward the direction of the pile 1, the inclined guide surface 803 of the wedge-shaped seat 802 first contacts the top surface of the pile 1. As the positioning seat 7 continues to move, based on the limiting effect of the top surface of the pile 1, the wedge-shaped seat 802 can be pushed up until the third electrode sheet 804 and the fourth electrode sheet 805 are attached and generate an electrical signal. The electrical signal can be sent to the alarm through the controller, and then it can be judged whether the limit stopper 8 is attached to the top surface of the pile 1. Correspondingly, in this embodiment, the clamping is completed only when the alarm devices corresponding to the limit stops 8 generate alarm signals. If any group of alarm devices does not generate alarm signals, the clamping needs to be performed again.

[0036] It should also be noted that, by providing the limit stopper 8 in this embodiment, the clamping tightness between the positioning seat 7 and the pile 1 can be further improved to avoid the displacement of the positioning seat 7 due to excessive vibration during the coring process.

[0037] See also Figure 6 A guide column 809 is also fixedly arranged on the limit stop seat 8, and a guide plate 808 fixed to the wedge seat 802 is slidably arranged on the guide column 809, wherein a second spring 810 is arranged on the guide column 809, one end of the second spring 810 is fixed to the limit stop seat 8, and the other end is fixed to the guide plate 808; it can be explained that when the wedge seat 802 contracts into the through groove 801, the second spring 810 can be synchronously driven by the guide plate 808 to stretch and generate elastic force, and when the limit stop seat 8 is separated from the pile 1, the second spring 810 can drive the wedge seat 802 to reset.

[0038] A method for using a clamping coring device comprises the following steps: See also Figure 1 as well as Figure 3-Figure 4 , S1, move the coring device to one side of the pile 1, so that the two side frames 2 are respectively located on both sides of the pile 1; S2, start the first motor 301 to drive the winding wheel 3 to rotate and perform the unwinding operation, so as to drive the coring bracket 4 to descend through the rope 302, so that the positioning ring 601 descends to the outside of the pile 1; S3, the positioning module synchronously drives each positioning seat 7 to move toward the direction close to the axial end of the positioning ring 601. Since the positioning seat 7 is circumferentially arranged in the positioning ring 601, when each positioning seat 7 is in close contact with the outer edge surface of the foundation pile 1, the axial end of the positioning ring 601 coincides with the central end axis of the foundation pile 1; S4, driving the coring pipe 405 to drill and coring downward along the central end axis of the pile 1.

[0039] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A clamping type coring device, comprising two base frames (2) arranged in parallel and symmetrically on both sides, and U-shaped frames (201) are fixedly arranged on the two base frames (2); It is characterized in that A winding wheel (3) is rotatably arranged on the U-shaped frame (201), a rope (302) is wound around the winding wheel (3), and a first motor (301) for driving the winding wheel (3) to rotate is also fixedly arranged on the U-shaped frame (201); the other end of the rope (302) is fixed to a coring bracket (4), and a coring tube (405) is provided on one side of the coring bracket (4); The bottom of the coring support (4) is also fixedly provided with a positioning ring (601) for sleeved on the outside of the foundation pile (1); the positioning ring (601) is coaxially arranged with the coring tube (405); and a plurality of groups of positioning seats (7) for positioning the foundation pile (1) are arranged in a circumferential array on the inner side of the positioning ring (601); The positioning ring (601) is also provided with a positioning module, which is used to drive each group of positioning seats (7) to synchronously move towards or away from the axis of the positioning ring (601).

2. A clamping type coring device according to claim 1, characterized in that: A screw rod (5) is rotatably arranged at the bottom of the coring support (4), the screw rod (5) is fixed to the output end of a second motor (401) fixedly arranged on the coring support (4), a coring support (404) is spirally sleeved on the screw rod (5), a coring tube (405) is rotatably arranged at one side of the bottom of the coring support (404), a third motor (402) is also fixedly arranged on the coring support (404), and the output end of the third motor (402) is transmission-connected to the coring tube (405) via a sprocket mechanism (406).

3. A clamping type coring device according to claim 2, characterized in that: One end of the screw rod (5) away from the coring support (4) is rotatably connected to the limiting frame (501), and the limiting frame (501) is fixed to the positioning ring (601) via the connecting frame (502); Wherein, guide rods (403) are symmetrically fixedly arranged on both sides of the limiting frame (501), and both ends of the core taking support (404) are slidably connected to the guide rods (403).

4. The clamping type coring device according to claim 1, characterized in that: The inner surface of the positioning ring (601) is fixedly provided with a plurality of guide seats (503) corresponding to the positioning seats (7) in a circumferential array, and the guide seats (503) are provided with guide grooves (504), in which pins (605) are slidably embedded, and a positioning plate (606) fixedly connected to the positioning seat (7) is fixedly provided on the pins (605).

5. A clamping type coring device according to claim 4, characterized in that: The positioning module comprises a driving ring (6) rotatably arranged on the positioning ring (601), the driving ring (6) and the positioning ring (601) being arranged coaxially, a plurality of groups of arc grooves (604) corresponding to the guide grooves (504) being arranged in a circumferential array on the driving ring (6), the arc grooves (604) extending from the proximal ring center end to the distal ring center end, and a pin shaft (605) slidably passing through the arc groove (604); The outer edge surface of the driving ring (6) is fixedly provided with an annular tooth (607), the bottom of one side of the positioning ring (601) is fixedly provided with a fourth motor (602), and the output end of the fourth motor (602) is fixedly provided with a gear (603) meshing with the annular tooth (607).

6. The clamping type coring device according to claim 1, characterized in that: Each of the positioning seats (7) is provided with at least two groups of limiting grooves (701) in the vertical direction in the direction of the axis of the positioning ring (601); a first support (702) is slidably embedded in the limiting groove (701); a second support (703) is fixedly arranged at the bottom of the limiting groove (701); a first electrode sheet (705) is fixedly arranged on one side of the first support (702) close to the second support (703); a second electrode sheet (704) is correspondingly arranged on the second support (703); and the first electrode sheet (705) and the second electrode sheet (704) are electrically connected to the alarm through a controller.

7. A clamping type coring device according to claim 6, characterized in that: The limiting groove (701) has limiting cylinders (706) fixedly arranged on both sides in a symmetrical manner, and the first support (702) has limiting seats (709) fixedly arranged on both sides. The limiting cylinder (706) is slidably plugged with a limiting rod (707) fixed to the limiting seat (709). Wherein, a first spring (708) is arranged on the limiting rod (707).

8. The clamping type coring device according to claim 1, characterized in that: A limit stopper (8) is fixedly arranged on each of the positioning seats (7) in a direction close to the axis of the positioning ring (601), a through groove (801) is provided on the limit stopper (8), a wedge-shaped seat (802) is slidably embedded in the through groove (801), an inclined guide surface (803) is provided at the bottom of the wedge-shaped seat (802) in a direction close to the axis of the positioning ring (601), and a third electrode sheet (804) is fixedly arranged on the wedge-shaped seat (802); An L-shaped limit frame (807) is fixedly arranged on the positioning seat (7), a third support (806) is fixedly arranged at the end of the L-shaped limit frame (807), a fourth electrode sheet (805) is fixedly arranged at one end of the third support (806) facing the limit stop seat (8), and the third electrode sheet (804) and the fourth electrode sheet (805) are electrically connected to the alarm device via a controller.

9. A clamping type coring device according to claim 8, characterized in that: A guide column (809) is also fixedly arranged on the limit stop seat (8), and a guide plate (808) fixed to the wedge seat (802) is slidably arranged on the guide column (809); Wherein, a second spring (810) is provided on the guide column (809).

10. A method for using the clamping coring device according to any one of claims 1 to 9, characterized in that: The steps include: Moving the coring device to one side of the foundation pile (1) so that the two side base frames (2) are respectively located on the two sides of the foundation pile (1); The first motor (301) is started to drive the winding wheel (3) to rotate and perform an unwinding operation, and the rope (302) drives the coring support (4) to descend, so that the positioning ring (601) descends to the outside of the foundation pile (1); The positioning module synchronously drives each positioning seat (7) to move in a direction close to the axial end of the positioning ring (601). Since the positioning seat (7) is circumferentially arranged in the positioning ring (601), when each positioning seat (7) is in close contact with the outer edge surface of the foundation pile (1), the axial end of the positioning ring (601) coincides with the central end axis of the foundation pile (1); The core drilling tube (405) is driven to drill a hole downward along the central end axis of the foundation pile (1) to drill a core.

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