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 clamping type coring device comprises a supporting rack and a core drilling and sampling mechanism, and further comprises a self-adaptive clamping mechanism; the self-adaptive holding and clamping mechanism comprises a rope lifting frame, a plurality of synchronous butt-clamping mechanisms and an automatic fixing mechanism, the synchronous butt-clamping mechanisms are distributed in a circle at equal intervals in the circumferential direction, and the core drilling and sampling mechanism is located above the center position of a circle defined by the synchronous butt-clamping mechanisms. The synchronous butt-clamping mechanisms which are distributed by a circle in the circumferential direction are hoisted to the periphery of the concrete foundation pile through the rope hoisting frame, and the synchronous butt-clamping mechanisms which are distributed in the circumferential direction can embrace and perform butt-clamping towards the middle at the same time; therefore, the distributed synchronous butt-clamping mechanisms can be conveniently matched with centering butt-clamping in a self-adaptive mode in the surrounding butt-clamping process, the centrally-arranged core drilling and sampling mechanism can be conveniently aligned to the middle position of the concrete foundation pile, and core taking at the center position can be conveniently and rapidly achieved.

Description

Technical Field

[0001] This invention relates to the field of foundation pile construction technology, and in particular to a clamp-type core sampling device and its usage method. Background Technology

[0002] Core sampling of foundation piles, commonly known as core drilling in civil engineering, refers to drilling a core sample to a certain depth from the surface of the pile, and then analyzing and evaluating the integrity of the pile based on the condition of the core sample. A core sampling machine is required for this process.

[0003] In the process of core sampling of existing foundation piles, in order to ensure the accuracy of core sample testing, it is necessary to take samples as close as possible to the center end of the foundation pile. This is because the distribution and density of aggregates may vary during the concrete pouring process, and the central area usually best reflects the average strength of the pile body. Therefore, it is necessary to take core samples from the center.

[0004] In existing pile core sampling equipment, to ensure core samples are taken from the center of the pile, the core tube must first be adjusted to be perpendicular to the pile's center before drilling downwards to collect the sample. However, current equipment typically involves repeatedly measuring and adjusting the core tube's position using leveling instruments to align it with the pile's center before lowering it for sampling. This process is cumbersome, cannot quickly achieve centering and alignment of the core tube, is labor-intensive, and lacks convenience. Summary of the Invention

[0005] The purpose of this invention is to provide a clamp-type coring device and its usage method to solve the technical problem that existing pile coring equipment is not convenient for quickly positioning the coring tube to align with the center of the pile for coring, resulting in inconvenient operation and affecting coring efficiency.

[0006] The technical problem to be solved by this invention can be achieved through the following technical solution: A clamping-type coring device includes a support frame and a core sampling mechanism, and also includes an adaptive clamping mechanism; The adaptive clamping mechanism includes a rope lifting frame, a synchronous clamping mechanism, and an automatic fixing mechanism. Multiple sets of synchronous clamping mechanisms are arranged equidistantly in a circumferential ring. The core sampling mechanism is positioned above the center of the circle formed by the synchronous clamping mechanisms. The synchronous clamping mechanisms are used to centrally clamp the concrete pile. The rope lifting frame flexibly suspends the synchronous clamping mechanisms and drives their lifting and lowering. The automatic fixing mechanism is installed on the rope lifting frame. A triggering mechanism is provided between the automatic fixing mechanism and each set of synchronous clamping mechanisms. When the synchronous clamping mechanism centrally clamps the concrete pile, the triggering mechanism connects the automatic fixing mechanism to the rope lifting frame and the support frame.

[0007] Preferably, the rope lifting frame includes a lifting top plate and a connecting bottom ring, a winch is provided on the top of the support frame, and the winch includes a lifting rope for connecting the lifting top plate, the connecting bottom ring is located below the lifting top plate, and the synchronous clamping mechanism is circumferentially and equidistantly distributed on the connecting bottom ring.

[0008] Preferably, each set of synchronous clamping mechanisms includes a sliding square tube, a support guide rail, a linkage pinion, and a rack; the support guide rail is horizontally fixedly connected to the inner ring of the connecting bottom ring and points to the center of the connecting bottom ring; the sliding square tube is slidably connected to the support guide rail; the side of the sliding square tube away from the center of the connecting bottom ring is fixedly connected to the rack; the linkage pinion is rotatably connected to the connecting bottom ring, and the rack and linkage pinion mesh accordingly; the connecting bottom ring is also provided with a driving mechanism for driving the sliding square tubes corresponding to each set of synchronous clamping mechanisms to slide simultaneously.

[0009] Preferably, the automatic fixing mechanism includes a lifting gravity ring, a one-way guide mechanism, an extension pressure plate, and a hydraulic jacking mechanism. The rope lifting frame also includes intermediate side plates, of which two are provided and fixedly connected to the upper sides of the connecting bottom ring. The lifting gravity ring is concentrically arranged above the connecting bottom ring, and both sides of the lifting gravity ring are connected to the corresponding intermediate side plates through the one-way guide mechanism. Two extension pressure plates are provided and symmetrically fixedly connected to the two sides of the lifting gravity ring, and the extension pressure plates are used to press against the bottom of the support frame. Two sets of hydraulic jacking mechanisms are provided and respectively installed on the intermediate side plates, and the hydraulic jacking mechanisms are used to support the top of the support frame.

[0010] Preferably, the one-way guiding mechanism includes a guide rod, a mounting block, and a one-way stop. One end of the guide rod is fixedly connected to the lifting gravity ring, and the other end slides through the corresponding intermediate side plate. A plurality of V-shaped grooves are longitudinally and equidistantly provided on one side of the guide rod. The mounting block is mounted on the intermediate side plate. One side of the one-way stop is movably connected to the mounting block through a spring-loaded hinge, and the other side engages with the V-shaped grooves.

[0011] Preferably, the support frame includes an upper cover plate and a lower base plate, and the lower base plate consists of two parts, which are fixedly connected to the lower sides of the upper cover plate.

[0012] Preferably, the triggering mechanism includes a sliding top block, a first linkage plate, a second linkage plate, a linkage lifting block, and a sliding locking mechanism. The sliding top block is slidably inserted into the sliding square tube, and a connecting spring connects the sliding top block and the sliding square tube. The sliding square tube has an opening on the side near the lifting gravity ring. The first linkage plate and the second linkage plate are both distributed in the opening. One side of the first linkage plate is movably connected to the sliding top block via a hinge, and the other side is movably connected to the second linkage plate via a hinge. The side of the second linkage plate away from the first linkage plate is movably connected to the sliding square tube via a hinge. The linkage lifting block is positioned above the position where the first linkage plate and the second linkage plate are connected. The sliding locking mechanism is connected between the lifting gravity ring and the corresponding linkage lifting block, and is used to lock the lifting gravity ring on the middle side plate.

[0013] Preferably, the sliding locking mechanism includes a lifting rod, a first guide sleeve, a second guide sleeve, and a sliding locking rod; one side of the linkage lifting block is fixedly connected to an extension rod parallel to the sliding square tube; the lifting rod slides through the first guide sleeve, and the bottom of the lifting rod is fixedly connected to a linkage sleeve, which is slidably fitted onto the corresponding extension rod; the second guide sleeve is fixedly disposed above the first guide sleeve, and the sliding locking rod slides horizontally through the second guide sleeve; the inner ring sidewall of the lifting gravity ring is provided with multiple locking holes equidistantly spaced circumferentially; one end of the sliding locking rod is used to insert into the corresponding locking hole, and the other end is movably connected to the lifting rod via a hinge with a linkage diagonal rod; a support spring is installed on the middle side plate, and a pressure sensing switch for controlling the start of the hydraulic lifting mechanism is installed on the top of the support spring; a protrusion aligned with the pressure sensing switch is fixedly connected to the top of the guide rod.

[0014] Preferably, the core sampling mechanism includes a drive screw, a support guide rod, a lifting seat, and a core drilling cylinder. The two intermediate side plates are fixedly connected to the lifting top plate, and each support guide rod passes through the corresponding side of the lifting seat. The drive screw is rotatably connected between the intermediate side plates and the lifting top plate, passes through the lifting seat, and is threadedly connected to the lifting seat. The core drilling cylinder is rotatably connected to the lifting seat, and is aligned with the center position of the connecting bottom ring.

[0015] The specific steps for using a clamp-type core extraction device are as follows: The first step is to move the entire core sampling device to the location of the concrete pile, and lower the rope hoist with the synchronous clamping mechanism that is evenly distributed around the perimeter, so that it is on the outer ring of the concrete pile. The second step is to make all the circumferentially distributed synchronous clamping mechanisms move synchronously toward the concrete pile and perform centered clamping. The third step, after the centering clamping is completed, triggers the automatic fixing mechanism to fix the docking rope lifting frame and support frame.

[0016] The beneficial effects of this invention are: 1. This invention uses a rope hoisting frame to lift a circumferentially distributed synchronous clamping mechanism to the periphery of a concrete pile. The circumferentially distributed synchronous clamping mechanism can simultaneously encircle and clamp towards the center. Due to the flexible suspension effect of the rope hoisting frame, the distributed synchronous clamping mechanism can adaptively match and center itself during the encircling and clamping process. This facilitates the alignment of the centrally located core sampling mechanism with the center of the concrete pile, enabling rapid and convenient core sampling from the center position and ensuring the accuracy of subsequent core sample testing.

[0017] 2. The present invention uses a main drive gear and a drive gear ring to drive all the linkage gears distributed on the connecting bottom ring to rotate synchronously. Each linkage gear can drive the corresponding rack to move laterally towards the center of the connecting bottom ring, thereby facilitating the synchronous clamping of the corresponding sliding square tubes towards the center and making it convenient to achieve centered clamping.

[0018] 3. When each sliding square tube of the present invention comes into contact with the concrete foundation pile, the sliding top block slidably set inside the sliding square tube is squeezed and slides into the sliding square tube. During this process, the sliding top block relies on the first linkage plate and the second linkage plate to lift the linkage lifting block. The linkage lifting block then drives the lifting rod to rise and, through the linkage inclined rod, drives the sliding locking rod to disengage from the lifting gravity ring. The lifting gravity ring, which can only fall downwards, falls by gravity and drives the extension pressure plate to press to the bottom of the support frame. At the same time, the hydraulic lifting mechanism rises and comes into contact with the top of the support frame, so that the synchronous clamping mechanism clamping the concrete foundation pile can remain stable relative to the support frame. This avoids the swaying and twisting of the entire rope lifting frame due to the flexible suspension of the rope lifting frame, which would affect the verticality of the borehole and even cause the drill to break due to the huge torque and feed reaction force that the core sampling mechanism 4 bears during drilling.

[0019] 4. Due to the circumferential distribution of multiple sets of synchronous clamping mechanisms, the corresponding sliding locking rod will only disengage from the lifting gravity ring when the sliding square tube of each set of synchronous clamping mechanisms effectively abuts against the concrete foundation pile and squeezes the corresponding sliding top block into the interior of the sliding square tube. That is, the lifting gravity ring will only descend to fix when it is fully clamped and all the sliding locking rods are disengaged from the lifting gravity ring, thus avoiding premature fixation that may affect the centering clamping. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2This is a schematic diagram of the relative positional distribution of the synchronous clamping mechanism, the connecting bottom ring, and the lifting gravity ring in this invention. Figure 3 This is a schematic diagram of the structure in which the sliding square tube and the connecting bottom ring are connected in this invention; Figure 4 This is a schematic diagram of the connection between the sliding square tube and the linkage toothed column in this invention; Figure 5 This is a schematic diagram of the structure in which the sliding top block and the linkage lifting block are connected in this invention; Figure 6 This is a bottom view schematic diagram of the structure in this invention where the connecting bottom ring and the lifting gravity ring are configured to cooperate. Figure 7 yes Figure 6 Enlarged structural diagram at point A; Figure 8 This is a schematic diagram of the connection between the lifting gravity ring and the middle side plate in this invention; Figure 9 yes Figure 8 Enlarged structural diagram at point B; Figure 10 This is a partial structural diagram of the lifting gravity ring in the descending state after the sliding top block is retracted into the sliding square tube in this invention; Figure 11 yes Figure 10 A magnified structural diagram at point C.

[0021] Explanation of reference numerals in the attached figures: 1. Support frame; 11. Top cover plate; 12. Bottom plate; 2. Winch; 21. Lifting rope; 3. Concrete foundation pile; 4. Core sampling mechanism; 41. Core drill barrel; 42. Lifting seat; 43. Drive screw; 44. Support guide rod; 5. Synchronous clamping mechanism; 51. Drive gear ring; 52. Main drive gear; 53. Support guide rail; 54. Sliding square tube; 55. Rack; 56. Linkage gear column; 6. Rope lifting frame; 61. Lifting top plate; 62. Intermediate side plate; 63. Connecting bottom ring; 7. Automatic fixing mechanism; 71. Lifting gravity ring; 72. Extension 73. Pressure plate; 74. Guide rod; 75. Protrusion; 76. Hydraulic telescopic rod; 77. Top pressure block; 78. V-groove; 79. One-way stop block; 80. Mounting block; 81. Triggering mechanism; 82. Sliding top block; 83. Linkage lifting block; 84. Extension rod; 85. Linkage sleeve; 86. Connecting slide rod; 87. First linkage plate; 88. Second linkage plate; 89. Through hole; 90. Lifting top rod; 91. First guide sleeve; 92. Linkage diagonal rod; 93. Second guide sleeve; 10. Sliding lock rod; 10. Electric telescopic rod; 101. Support spring; 102. Pressure sensing switch. Detailed Implementation

[0022] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0023] Example 1

[0024] like Figures 1-11 As shown, a clamping core sampling device is used to sample cylindrical or square concrete piles 3. The device includes a support frame 1 and a core sampling mechanism 4, which is used to drill into the concrete piles 3 to take samples. The device also includes an adaptive clamping mechanism. The adaptive clamping mechanism includes a rope lifting frame 6, a synchronous clamping mechanism 5, and an automatic fixing mechanism 7. Multiple sets of synchronous clamping mechanisms 5 are evenly distributed around the perimeter. The core sampling mechanism 4 is positioned above the center of the circle formed by the synchronous clamping mechanisms 5. The synchronous clamping mechanisms 5 are used to centrally clamp the concrete pile 3, facilitating the alignment of the core sampling mechanism 4 with the center of the concrete pile 3, thus ensuring that the sample is taken from the center of the concrete pile 3 and improving the accuracy of subsequent testing. The rope lifting frame 6 is used to flexibly suspend the synchronous clamping mechanisms 5 and drive their lifting and lowering. Furthermore, due to the flexible suspension of the rope lifting frame 6, the conveniently distributed synchronous clamping mechanism 5 can adaptively match and center itself during the clamping process; the automatic fixing mechanism 7 is installed on the rope lifting frame 6, and a triggering mechanism 8 is provided between the automatic fixing mechanism 7 and each group of synchronous clamping mechanisms 5. When the synchronous clamping mechanism 5 clamps the concrete pile 3 in the center, the triggering mechanism 8 causes the automatic fixing mechanism 7 to connect the rope lifting frame 6 and the support frame 1. In this way, the core sampling mechanism 4 can stably perform core sampling, avoiding instability of the entire device due to the flexible suspension of the rope lifting frame 6.

[0025] In some specific implementations of this embodiment, combined with Figure 1 and Figure 2 As shown, the rope lifting frame 6 includes a lifting top plate 61 and a connecting bottom ring 63. A winch 2 is installed on the top of the support frame 1, and the winch 2 includes a lifting rope 21 for connecting the lifting top plate 61. The lifting rope 21 is wound or released by the winch 2 to realize the lifting of the lifting top plate 61. It should be noted that the lifting rope 21 is connected to the center position of the lifting top plate 61, and multiple ends of the lifting rope 21 can be evenly distributed for connection. The connecting bottom ring 63 is located below the lifting top plate 61, and the synchronous clamping mechanism 5 is circumferentially distributed on the connecting bottom ring 63. When core sampling is required, the entire device is moved to the location of the concrete pile 3, so that the connecting bottom ring 63 is above the concrete pile 3. Then, the lifting rope 21 is released by the winch 2, so that the connecting bottom ring 63 descends and fits around the outer ring of the concrete pile 3, and then is centered and clamped by the distributed synchronous clamping mechanism 5.

[0026] In other specific embodiments of this example, refer to Figures 3 to 5 As shown, each set of synchronous clamping mechanisms 5 includes a sliding square tube 54, a support guide rail 53, a linkage pinion 56, and a rack 55. The support guide rail 53 is horizontally fixedly connected to the inner ring of the connecting bottom ring 63 and points to the center of the connecting bottom ring 63. The sliding square tube 54 is slidably connected to the support guide rail 53, which is a T-shaped guide rail. The side of the sliding square tube 54 away from the center of the connecting bottom ring 63 is fixedly connected to the rack 55. The linkage pinion 56 is rotatably connected to the connecting bottom ring 63 through a rotating shaft, and the rack 55 and the linkage pinion 56 mesh accordingly. The connecting bottom ring 63 is also provided with a drive mechanism for driving the sliding square tube 54 of each set of synchronous clamping mechanisms 5 to slide simultaneously.

[0027] In a further embodiment, the driving mechanism includes a driving gear ring 51 and a main driving gear 52. The driving gear ring 51 is concentrically rotatably connected to the connecting bottom ring 63. Specifically, an annular groove with a T-shaped cross-section can be opened on the surface of the connecting bottom ring 63, and the driving gear ring 51 is slidably connected to the annular groove. The linkage gear 56 corresponding to each synchronous clamping mechanism 5 meshes with the driving gear ring 51. The main driving gear 52 is rotatably disposed on one side of the connecting bottom ring 63 and meshes with the driving gear ring 51. Here, the main driving gear 52 is driven by a motor fixedly installed on the connecting bottom ring 63. It should be noted that the linkage gear 56 has a certain height, and the meshing positions of the rack 55 and the driving gear ring 51 are staggered vertically.

[0028] When the connecting bottom ring 63, carrying the circumferentially equidistantly distributed synchronous clamping mechanisms 5, descends and fits around the concrete pile 3, the motor drives the main drive gear 52 to rotate. The main drive gear 52 then drives the drive gear ring 51 to rotate, which in turn drives the linkage gear column 56 corresponding to all the synchronous clamping mechanisms 5 to rotate. The linkage gear column 56 then drives the rack 55 to translate, and the rack 55 then drives the corresponding connected sliding square tube 54 to translate along the support guide rail 53 towards the center of the connecting bottom ring 63. At this time, due to the flexible suspension of the lifting rope 21, regardless of whether the center of the connecting bottom ring 63 coincides with the center of the concrete pile 3, the circumferentially distributed sliding square tubes 54 synchronously slide and clamp towards the center. This facilitates the automatic adaptation and adjustment when all the sliding square tubes 54 finally press against the concrete pile 3, so that the center of the connecting bottom ring 63 coincides with the center of the concrete pile 3. The core sampling mechanism 4 is located directly above the center of the connecting bottom ring 63, thus aligning the core sampling mechanism 4 with the center of the concrete pile 3 for convenient center sampling.

[0029] Example 2

[0030] Based on Example 1, and referring to Figure 2As shown, the automatic fixing mechanism 7 includes a lifting gravity ring 71, a one-way guide mechanism, an extension pressure plate 72, and a hydraulic jacking mechanism. The rope lifting frame 6 also includes a middle side plate 62. Two middle side plates 62 are provided and are fixedly connected to the upper sides of the connecting bottom ring 63 by brackets. The lifting gravity ring 71 is concentrically arranged above the connecting bottom ring 63, and the diameter of the lifting gravity ring 71 is larger than the diameter of the connecting bottom ring 63 to avoid motion interference. Both sides of the lifting gravity ring 71 are connected to the corresponding middle side plate 62 by the one-way guide mechanism. The one-way guide mechanism allows the lifting gravity ring 71 to only descend relative to the middle side plate 62 and cannot rise. Two extension pressure plates 72 are provided and are symmetrically fixedly connected to the two sides of the lifting gravity ring 71. The extension pressure plates 72 are used to press against the bottom of the support frame 1. Two sets of hydraulic jacking mechanisms are provided and are respectively installed on the middle side plates 62. The hydraulic jacking mechanisms are used to support the top of the support frame 1.

[0031] In some specific implementations of this embodiment, refer to Figure 8 and Figure 9 As shown, the one-way guiding mechanism includes a guide rod 73, a mounting block 79, and a one-way stop 78. One end of the guide rod 73 is fixedly connected to the lifting gravity ring 71, and the other end slides through the corresponding intermediate side plate 62. Multiple V-shaped grooves 77 are longitudinally and equidistantly provided on one side of the guide rod 73. The distribution density of the V-shaped grooves 77 can be selected according to actual conditions. The mounting block 79 is mounted on the intermediate side plate 62. One side of the one-way stop 78 is movably connected to the mounting block 79 via a spring-loaded hinge, and the other side engages with the V-shaped grooves 77. It should be noted that the side of the one-way stop 78 connected to the mounting block 79 is flush with the mounting block 79, and the lower edge of the connecting side springs back to the mounting block 79. The hinged connection means that the one-way stop 78 cannot rotate upward from the horizontal position, but can only deflect downward from the horizontal position. This ensures that when the lifting gravity ring 71 descends, the guide rod 73 can descend relative to the middle side plate 62. During this process, the V-shaped groove 77 squeezes through the one-way stop 78. Since the one-way stop 78 cannot deflect upward from the horizontal position, it can block the guide rod 73 when the lifting gravity ring 71 has a tendency to rise relative to the middle side plate 62, so that the lifting gravity ring 71 cannot rise relative to the middle side plate 62. That is, the lifting gravity ring 71 and the middle side plate 62 can only be separated and cannot get close to each other, so that it can be firmly pressed against the bottom of the support frame 1 by the extension pressure plate 72.

[0032] It should be noted that when the gravity ring 71 needs to be reset, an electric telescopic rod 10 can be fixedly installed on the middle side plate 62, and the telescopic end of the electric telescopic rod 10 is fixedly connected to the mounting block 79. The electric telescopic rod 10 can drive the mounting block 79 and the one-way stop block 78 to disengage from the V-shaped groove 77 on the guide rod 73 by retracting.

[0033] In a further specific embodiment of this example, the hydraulic lifting mechanism includes a hydraulic telescopic rod 75 and a pressing block 76. The hydraulic telescopic rod 75 is vertically fixed to the middle side plate 62, with its telescopic end pointing vertically upward. The pressing block 76 is connected to the telescopic end of the hydraulic telescopic rod 75. The hydraulic telescopic rod 75 extends upward, causing the pressing block 76 to abut against the top of the support frame 1. In this way, the reaction force can be used to press the extended pressure plate 72 on the lifting gravity ring 71 against the bottom of the support frame 1. At the same time, the lifting rope 21 can be taut, which makes it easier to make the entire rope lifting frame 6 stable relative to the support frame 1. This avoids the core sampling mechanism 4 from bearing huge torque and feed reaction force during drilling, which could cause the entire rope lifting frame 6 to shake or twist, thereby affecting the verticality of the borehole or even causing the drill to break.

[0034] In some specific implementations of this embodiment, refer to Figure 1 As shown, the support frame 1 includes an upper cover plate 11 and a lower base plate 12. The lower base plate 12 has two parts and is fixedly connected to the lower sides of the upper cover plate 11 by brackets. The winch 2 can be fixedly installed on the upper cover plate 11. The extension pressure plate 72 is positioned above the lower base plate 12, and the top pressure block 76 is positioned below the upper cover plate 11. The lower base plate 12 can be equipped with casters with self-locking function for easy movement.

[0035] It should be noted that, in order to ensure that even if the position of the rope lifting frame 6 changes within a certain range during the centered clamping process of the synchronous clamping mechanism 5, the extension pressure plate 72 is always above the corresponding lower base plate 12, while the top pressure block 76 is below the upper cover plate 11, the extension pressure plate 72 and the lower base plate 12 need to be set to have a certain length and be distributed in an intersecting manner; at the same time, the length and width of the upper cover plate 11 should be set to a large size.

[0036] In addition, to ensure stability after contact, the upper surface of the top pressure block 76 and the lower surface of the extension pressure plate 72 are provided with anti-slip protrusions, such as cones; at the same time, the upper surface of the bottom plate 12 and the lower surface of the top cover plate 11 are provided with mesh anti-slip grooves, that is, linear grooves distributed in a crisscross pattern. In this way, stability can be ensured when in contact, thereby ensuring that the entire rope lifting frame 6 remains stable relative to the support frame 1.

[0037] Meanwhile, in order to ensure that the top pressure block 76 can effectively abut against the upper cover plate 11, a universal ball assembly can be installed at the telescopic end of the hydraulic telescopic rod 75, and the universal ball assembly is connected to the top pressure block 76. The universal ball assembly includes a ball shell fixedly connected to the telescopic end of the hydraulic telescopic rod 75 and a ball movably embedded in the ball shell, and the top pressure block 76 is fixedly connected to the ball.

[0038] In other specific embodiments of this example, refer to Figures 3 to 5As shown, the triggering mechanism 8 includes a sliding top block 81, a first linkage plate 86, a second linkage plate 87, a linkage lifting block 82, and a sliding locking mechanism. The sliding top block 81 is slidably inserted into the sliding square tube 54, and a compressible connecting spring connects the sliding top block 81 and the sliding square tube 54. In the initial state, the sliding top block 81 protrudes a certain length outside the sliding square tube 54. A through-hole 88 is opened on the side of the sliding square tube 54 near the lifting gravity ring 71. The first linkage plate 86 and the second linkage plate 87 are both distributed in the through-hole 88, and one side of the first linkage plate 86 is movably connected to the sliding top block 81 through a hinge, while the other side is open to the sliding top block 81. The second linkage plate 87 is movably connected to the first linkage plate 86 via a hinge. The side of the second linkage plate 87 away from the first linkage plate 86 is movably connected to the sliding square tube 54 via a hinge. The two are inclined. The linkage lifting block 82 is positioned above the position where the first linkage plate 86 and the second linkage plate 87 are connected. Connecting slide rods 85 are fixedly connected to both sides of the linkage lifting block 82. Connecting sleeves are fixedly connected to both sides of the sliding square tube 54. The connecting slide rods 85 slide through the connecting sleeves. The sliding locking mechanism is connected between the lifting gravity ring 71 and the corresponding linkage lifting block 82. The sliding locking mechanism is used to lock the lifting gravity ring 71 on the middle side plate 62.

[0039] In a further specific implementation of this embodiment, refer to Figure 4 , Figure 6 and Figure 7As shown, the sliding locking mechanism includes a lifting rod 89, a first guide sleeve 90, a second guide sleeve 92, and a sliding locking rod 93. The first guide sleeve 90 is fixedly connected to the connecting bottom ring 63. The specific connection can be determined based on its location. For example, if it is located at the middle side plate 62, the first guide sleeve 90 can be fixedly connected to the middle side plate 62 via a bracket. If it is located in other positions, the first guide sleeve 90 can be directly fixedly connected to the connecting bottom ring 63 via a bracket. An extension rod 83 parallel to the sliding square tube 54 is fixedly connected to one side of the linkage lifting block 82. The lifting rod 89 slides through the first guide sleeve 90, and a linkage sleeve 84 is fixedly connected to the bottom of the lifting rod 89, and the linkage sleeve 84 slides on the corresponding extension rod 83. The second guide sleeve 92 is fixedly positioned above the first guide sleeve 90, and the second... The guide sleeve 92 is perpendicular to the axis of the first guide sleeve 90. The sliding locking rod 93 slides horizontally through the second guide sleeve 92. The inner ring side wall of the lifting gravity ring 71 has multiple locking holes equidistantly spaced around it. One end of the sliding locking rod 93 is used to insert into the corresponding locking hole, and the other end is movably connected to the lifting rod 89 by a hinge with a linkage rod 91. That is, the two ends of the linkage rod 91 are respectively connected to the lifting rod 89 and the sliding locking rod 93 by hinges. A compressible support spring 101 is installed on the middle side plate 62, and a pressure sensing switch 102 for controlling the start of the hydraulic lifting mechanism is installed on the top of the support spring 101. A protrusion 74 aligned with the pressure sensing switch 102 is fixedly connected to the top of the guide rod 73. It should be noted that the elastic force of the support spring 101 here is much smaller than the gravity of the lifting gravity ring 71.

[0040] When the distributed sliding square tubes 54 slide towards the center, the linkage lifting block 82 moves synchronously with them. During this process, the extension rod 83 slides relative to the linkage sleeve 84 without causing motion interference. Each sliding square tube 54 first contacts the concrete foundation pile 3 through the corresponding sliding top block 81. As it pushes, the sliding top block 81 continuously compresses the connecting spring and slides into the sliding square tube 54. During this process, the sliding top block 81 squeezes the movable first linkage plate 86 and the second linkage plate 87, causing the first linkage plate 86 and the second linkage plate 87 to arch up, thereby pushing the linkage lifting block 82 to rise. The linkage lifting block 82 then drives the linkage sleeve 84 to rise through the extension rod 83. The linkage sleeve 84 drives the lifting rod 89 to rise synchronously. The lifting rod 89 moves along the first guide... During the lifting process of sleeve 90, the inclined linkage rod 91 drives the sliding locking rod 93 to slide laterally away from the lifting gravity ring 71 along the second guide sleeve 92. When the sliding top block 81 stops relative to the sliding square tube 54 and cannot continue to retract, the sliding locking rod 93 just disengages from the locking hole on the lifting gravity ring 71. Since each group of synchronous clamping mechanisms 5 distributed in the circumference corresponds to a sliding locking rod 93, it can be ensured that the distributed synchronous clamping mechanisms 5 clamp the concrete foundation pile 3 in the center before all the sliding locking rods 93 disengage from the lifting gravity ring 71. At this time, the lifting gravity ring 71 is fully unlocked. Then, it descends by gravity, the guide rod 73 descends synchronously, and the pressure sensing switch 102 on the support spring 101 is pressed down by the protrusion 74. The pressure sensing switch 102 then starts the hydraulic lifting mechanism.

[0041] It should be noted that the support spring 101 here generates a rebound force after being compressed, which can always keep the pressure sensing switch 102 in contact with the pressing protrusion 74. In this way, even if vibration occurs during the drilling and core taking process, the pressure sensing switch 102 will not separate from the protrusion 74, thus affecting the control feedback.

[0042] In addition, since there are two intermediate side plates 62, the pressure sensing switch 102 distributed on one of the intermediate side plates 62 can be electrically connected to the hydraulic lifting mechanism, and the pressure sensing switch 102 distributed on the other intermediate side plate 62 can be electrically connected to the signal feedback light, so as to remind the operator that the centering clamping has been completed and the core removal operation can be performed.

[0043] Example 3

[0044] Based on Example 2, and referring to Figure 2As shown, the core sampling mechanism 4 includes a drive screw 43, a support guide rod 44, a lifting seat 42, and a core drilling cylinder 41. The two intermediate side plates 62 are fixedly connected to the lifting top plate 61, and each support guide rod 44 passes through the corresponding side of the lifting seat 42, allowing the lifting seat 42 to slide along the support guide rod 44. The drive screw 43 is rotatably connected between the intermediate side plates 62 and the lifting top plate 61, and is driven to rotate by a motor. The drive screw 43 passes through the lifting seat 42 and is threadedly connected to the lifting seat 42. The core drilling cylinder 41 is rotatably connected to the lifting seat 42, and is aligned with the center of the connecting bottom ring 63. The core drilling cylinder 41 is driven to rotate by a motor, which can be directly fixedly mounted on the lifting seat 42.

[0045] The following are the specific steps of using a clamp-type core extraction device based on Embodiment 1: First, move the entire core sampling device to the location of the concrete pile 3, and lower the rope lifting frame 6 with the synchronous clamping mechanism 5 distributed circumferentially at equal intervals around it, so that it is on the outer ring of the concrete pile 3. The second step is to make all the circumferentially distributed synchronous clamping mechanisms 5 move synchronously toward the concrete pile 3 to perform centered clamping. Third, after the centering clamping is completed, the triggering mechanism 8 causes the automatic fixing mechanism 7 to fix the docking rope lifting frame 6 and the support frame 1. This allows the core sampling mechanism 4 to perform core sampling stably, avoiding instability in the operation of the entire device due to the flexible suspension of the rope lifting frame 6.

[0046] To facilitate understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution will now be briefly explained in conjunction with specific application scenarios: First, the entire device is moved to the location of the concrete pile 3, so that the two lower base plates 12 are on the ground on both sides of the concrete pile 3, and the connecting bottom ring 63 is roughly above the concrete pile 3. Then, the hoisting rope 21 is released by the winch 2, causing the connecting bottom ring 63 to descend and fit around the outer ring of the concrete pile 3. At this time, the distributed synchronous clamping mechanisms 5 are also on the periphery of the concrete pile 3. Then, the motor drives the main drive gear 52 to rotate, which in turn drives the drive gear ring 51 to rotate. The drive gear ring 51 drives the corresponding linkage gear column 56 of all synchronous clamping mechanisms 5 to rotate. The linkage gear column 56 then drives the rack 55 to translate, and the rack 55 drives the corresponding connected sliding square tube 5. 4. Move along the support guide rail 53 to the center position of the connecting bottom ring 63. At this time, due to the flexible suspension of the lifting rope 21, regardless of whether the center of the connecting bottom ring 63 coincides with the center of the concrete pile 3, the circumferentially distributed sliding square tubes 54 slide towards the center in sync. When one of the sliding square tubes 54 first touches the concrete pile 3, it can cause the connecting bottom ring 63 to change position relative to the concrete pile 3. Finally, when all the sliding square tubes 54 are against the concrete pile 3, they automatically adapt and adjust to achieve the center of the connecting bottom ring 63 coincides with the center of the concrete pile 3. The core sampling mechanism 4 is located directly above the center position of the connecting bottom ring 63, so the core sampling mechanism 4 is aligned with the center position of the concrete pile 3. It should be noted that when the distributed sliding square tubes 54 slide towards the center, the linkage lifting block 82 moves synchronously with them. During this process, the extension rod 83 slides relative to the linkage sleeve 84 without causing motion interference. Furthermore, each sliding square tube 54 first contacts the concrete pile 3 via its corresponding sliding top block 81. As it pushes, the sliding top block 81 continuously compresses the connecting spring and slides back into the sliding square tube 54. During this process, the sliding top block 81 presses against the movable first linkage plate 86 and second linkage plate 87, causing them to arch, thus pushing the linkage lifting block 82 up. The linkage lifting block 82 then drives the linkage sleeve 84 to rise via the extension rod 83. The linkage sleeve 84 then drives the lifting rod 89 to rise synchronously. The lifting rod 89 moves along... During the lifting process of the first guide sleeve 90, the inclined linkage rod 91 drives the sliding locking rod 93 to slide laterally away from the lifting gravity ring 71 along the second guide sleeve 92. When the sliding top block 81 stops relative to the sliding square tube 54 and cannot continue to retract, the sliding locking rod 93 just disengages from the locking hole on the lifting gravity ring 71. Since each group of circumferentially distributed synchronous clamping mechanisms 5 corresponds to a sliding locking rod 93, it can be ensured that the distributed synchronous clamping mechanisms 5 clamp the concrete foundation pile 3 in the center before all the sliding locking rods 93 disengage from the lifting gravity ring 71. At this time, the lifting gravity ring 71 is fully unlocked. Then, it descends by gravity, the guide rod 73 descends synchronously, and the pressure sensing switch 102 on the support spring 101 is pressed down by the protrusion 74. The pressure sensing switch 102 then starts the hydraulic lifting mechanism. When the lifting gravity ring 71 descends, the guide rod 73 can descend relative to the middle side plate 62. During this process, the V-shaped groove 77 squeezes through the one-way stop 78. Since the one-way stop 78 cannot deflect upward from the horizontal position, it can block the guide rod 73 when the lifting gravity ring 71 has a tendency to rise relative to the middle side plate 62, so that the lifting gravity ring 71 cannot rise relative to the middle side plate 62. Finally, the extended pressure plates 72 connected to both sides of the lifting gravity ring 71 press on the lower base plate 12 of the support frame 1.

[0047] Furthermore, when the guide rod 73 descends, it relies on the protrusion 74 to press down on the pressure sensing switch 102 on the support spring 101. The pressure sensing switch 102 then activates the hydraulic lifting mechanism, and the hydraulic telescopic rod 75 of the hydraulic lifting mechanism extends upward, causing the top pressure block 76 to abut against the upper cover plate 11 of the support frame 1. In this way, the reaction force can be used to press the extended pressure plate 72 on the lifting gravity ring 71 to press the lower bottom plate 12 of the support frame 1. At the same time, the lifting rope 21 can be taut, which makes it easier to make the entire rope lifting frame 6 stable relative to the support frame 1. This avoids the core sampling mechanism 4 from bearing huge torque and feed reaction force during drilling, which would cause the entire rope lifting frame 6 to shake or twist, thereby affecting the verticality of the borehole and even causing the drill to break.

[0048] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A clamp-type coring device, comprising a support frame (1) and a core sampling mechanism (4), characterized in that, It also includes an adaptive clamping mechanism; The adaptive clamping mechanism includes a rope lifting frame (6), a synchronous clamping mechanism (5), and an automatic fixing mechanism (7). The synchronous clamping mechanism (5) is provided in multiple sets and is distributed in a circle at equal intervals around the perimeter. The core sampling mechanism (4) is located above the center of the circle formed by the synchronous clamping mechanism (5). The synchronous clamping mechanism (5) is used to clamp the concrete pile (3) in the center. The rope lifting frame (6) is used to flexibly suspend the synchronous clamping mechanism (5) and drive the synchronous clamping mechanism (5) to rise and fall. The automatic fixing mechanism (7) is installed on the rope lifting frame (6). The automatic fixing mechanism (7) and each set of synchronous clamping mechanisms (5) are equipped with a triggering mechanism (8). When the synchronous clamping mechanism (5) clamps the concrete pile (3) in the center, the triggering mechanism (8) causes the automatic fixing mechanism (7) to connect the rope lifting frame (6) and the support frame (1).

2. The clamp-type core extraction device according to claim 1, characterized in that, The rope lifting frame (6) includes a lifting top plate (61) and a connecting bottom ring (63). A winch (2) is provided on the top of the support frame (1), and the winch (2) includes a lifting rope (21) for connecting the lifting top plate (61). The connecting bottom ring (63) is located below the lifting top plate (61), and the synchronous clamping mechanism (5) is circumferentially distributed on the connecting bottom ring (63).

3. The clamp-type core extraction device according to claim 2, characterized in that, Each set of synchronous clamping mechanisms (5) includes a sliding square tube (54), a support guide rail (53), a linkage pinion (56), and a rack (55); the support guide rail (53) is horizontally fixedly connected to the inner ring of the connecting bottom ring (63) and points to the center position of the connecting bottom ring (63); the sliding square tube (54) is slidably connected to the support guide rail (53); the side of the sliding square tube (54) away from the center position of the connecting bottom ring (63) is fixedly connected to the rack (55); the linkage pinion (56) is rotatably connected to the connecting bottom ring (63), and the rack (55) and the linkage pinion (56) mesh accordingly; the connecting bottom ring (63) is also provided with a driving mechanism for driving the sliding square tube (54) corresponding to each set of synchronous clamping mechanisms (5) to slide simultaneously.

4. The clamp-type core extraction device according to claim 3, characterized in that, The automatic fixing mechanism (7) includes a lifting gravity ring (71), a one-way guide mechanism, an extension pressure plate (72), and a hydraulic lifting mechanism. The rope lifting frame (6) also includes a middle side plate (62). Two middle side plates (62) are provided and are fixedly connected to the upper sides of the connecting bottom ring (63). The lifting gravity ring (71) is concentrically arranged above the connecting bottom ring (63). Both sides of the lifting gravity ring (71) are connected to the corresponding middle side plate (62) through the one-way guide mechanism. Two extension pressure plates (72) are provided and are symmetrically fixedly connected to the upper sides of the lifting gravity ring (71). The extension pressure plates (72) are used to press the bottom of the support frame (1). Two sets of hydraulic lifting mechanisms are provided and are respectively installed on the middle side plate (62). The hydraulic lifting mechanisms are used to support the top of the support frame (1).

5. A clamp-type core extraction device according to claim 4, characterized in that, The one-way guiding mechanism includes a guide rod (73), a mounting block (79), and a one-way stop (78). One end of the guide rod (73) is fixedly connected to the lifting gravity ring (71), and the other end slides through the corresponding middle side plate (62). A plurality of V-shaped grooves (77) are longitudinally and equidistantly provided on one side of the guide rod (73). The mounting block (79) is installed on the middle side plate (62). One side of the one-way stop (78) is movably connected to the mounting block (79) through a spring-loaded hinge, and the other side is engaged with the V-shaped grooves (77).

6. The clamp-type core extraction device according to claim 1, characterized in that, The support frame (1) includes an upper cover plate (11) and a lower base plate (12). The lower base plate (12) has two parts and is fixedly connected to the lower sides of the upper cover plate (11).

7. A clamp-type core extraction device according to claim 5, characterized in that, The triggering mechanism (8) includes a sliding top block (81), a first linkage plate (86), a second linkage plate (87), a linkage lifting block (82), and a sliding locking mechanism. The sliding top block (81) is slidably inserted into the sliding square tube (54), and a connecting spring connects the sliding top block (81) and the sliding square tube (54). The sliding square tube (54) has a through-hole (88) on the side near the lifting gravity ring (71). The first linkage plate (86) and the second linkage plate (87) are both distributed in the through-hole (88), and one side of the first linkage plate (86) is connected to the sliding square tube (82) via a hinge. The moving top block (81) is movably connected, and the other side is movably connected to the second linkage plate (87) via a hinge. The side of the second linkage plate (87) away from the first linkage plate (86) is movably connected to the sliding square tube (54) via a hinge. The linkage lifting block (82) is positioned above the position where the first linkage plate (86) and the second linkage plate (87) are connected. The sliding locking mechanism is connected between the lifting gravity ring (71) and the corresponding linkage lifting block (82). The sliding locking mechanism is used to lock the lifting gravity ring (71) on the middle side plate (62).

8. A clamp-type core extraction device according to claim 7, characterized in that, The sliding locking mechanism includes a lifting rod (89), a first guide sleeve (90), a second guide sleeve (92), and a sliding locking rod (93); one side of the linkage lifting block (82) is fixedly connected to an extension rod (83) parallel to the sliding square tube (54); the lifting rod (89) slides through the first guide sleeve (90), and the bottom of the lifting rod (89) is fixedly connected to a linkage sleeve (84), and the linkage sleeve (84) is slidably sleeved on the corresponding extension rod (83); the second guide sleeve (92) is fixedly disposed above the first guide sleeve (90), and the sliding locking rod (93) slides horizontally. The second guide sleeve (92) passes through the inner ring sidewall of the lifting gravity ring (71), which is circumferentially provided with multiple locking holes. One end of the sliding locking rod (93) is used to be inserted into the corresponding locking hole, and the other end is connected to the lifting rod (89) by a hinge with a linkage diagonal rod (91). A support spring (101) is installed on the middle side plate (62), and a pressure sensing switch (102) for controlling the start of the hydraulic lifting mechanism is installed on the top of the support spring (101). A protrusion (74) aligned with the pressure sensing switch (102) is fixedly connected to the top of the guide rod (73).

9. A clamp-type core extraction device according to claim 4, characterized in that, The core sampling mechanism (4) includes a drive screw (43), a support guide rod (44), a lifting seat (42), and a core drilling cylinder (41). The two intermediate side plates (62) are fixedly connected to the lifting top plate (61), and each support guide rod (44) passes through the corresponding side of the lifting seat (42). The drive screw (43) is rotatably connected between the intermediate side plate (62) and the lifting top plate (61). The drive screw (43) passes through the lifting seat (42), and the drive screw (43) is threadedly connected to the lifting seat (42). The core drilling cylinder (41) is rotatably connected to the lifting seat (42), and the core drilling cylinder (41) is aligned with the center position of the connecting bottom ring (63).

10. A method of using a clamp-type coring device, implemented by any one of claims 1 to 9, characterized in that, The specific steps are as follows: First step: Move the entire core sampling device to the location of the concrete pile (3), and lower the rope lifting frame (6) with the synchronous clamping mechanism (5) distributed circumferentially at equal intervals, and place it on the outer ring of the concrete pile (3). The second step is to make all the circumferentially distributed synchronous clamping mechanisms (5) move synchronously toward the concrete pile (3) to perform centered clamping; The third step, after the centering clamp is completed, triggering mechanism (8) causes automatic fixing mechanism (7) to fix the docking rope lifting frame (6) and support frame (1).

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