A self-adaptive arc bored pile probe and its use method

Abstract

The present invention discloses an adaptive curvature bored pile borehole finder and a method for use thereof, and relates to the technical field of metering and detection of bored pile borehole surfaces. In a first aspect, an adaptive curvature bored pile borehole finder comprises a fixed rod for connecting to a telescopic device and a sleeve threadedly connected to the fixed rod. The sleeve is provided with at least three swinging rods evenly arranged in a ring shape. The swinging rods are hinged to the sleeves. The swinging rods are hinged to a connecting end at one end away from the sleeve. The connecting end is connected to a support roll arranged around the sleeve. A detection mechanism is provided at the bottom of the support roll. In a second aspect, an adaptive curvature bored pile borehole finder method is provided. The present invention, applied to the above-mentioned adaptive curvature bored pile borehole finder, can minimize the gap between the borehole finder and the bored pile hole, so that the curvature of the borehole finder's outer contour gradually increases with the increase of the radius, thereby improving the accuracy of detecting the inner wall of the borehole.

Description

Technical Field

[0001] The invention relates to the technical field of measurement and detection of bored pile surfaces, and in particular to a bored pile hole finder with an adaptive arc and a use method thereof. Background Art

[0002] Bored piles are a type of foundation structure formed by mechanically drilling holes, placing a steel cage, and pouring concrete. They are widely used in high-rise buildings, bridges, ports, and other projects. Their core function is to transfer the upper load to a deeper, stable soil or rock layer, thereby increasing the bearing capacity of the foundation. They are suitable for a variety of geological conditions, including soft soil, sand, gravel, and some rock formations.

[0003] After the bored pile is drilled, the internal condition of the bored pile needs to be inspected to avoid bulges, shrinkage holes, tilting, etc. Existing bored pile hole finders, such as those described in Chinese patent application publication number CN114351772B, are capable of detecting bored piles of different hole diameters.

[0004] However, the existing technology relies on increasing the distance between the arc-shaped fixed column and the fixed rod to expand the overall outer diameter of the borehole. However, since the fixed column is in an arc shape, even if the gap between adjacent fixed columns is compensated by the arc-shaped movable rod, there will be a significant gap between the overall contour formed and the full circle formed by the inner wall of the drilled hole. In addition, there is no pressure sensor provided on the arc-shaped movable rod, making it difficult to accurately detect the arc-shaped movable rod. Summary of the Invention

[0005] The object of the present invention is to provide a bored pile probe with an adaptive curvature and a method for use thereof, which can minimize the gap between the probe and the bored pile hole as much as possible, so that the curvature of the outer contour of the probe gradually increases with the increase of the radius, thereby improving the accuracy of the detection of the inner wall of the bored hole.

[0006] In order to solve the above technical problems, the present invention adopts the following solutions:

[0007] In the first aspect, a bored pile borehole detector with an adaptive curvature includes a fixed rod for connecting to a telescopic device and a sleeve threadedly connected to the outside of the fixed rod. The sleeve is evenly and evenly provided with at least three swing rods in a ring shape. The swing rods are hinged to the sleeves. The end of the swing rod away from the sleeve is hinged to a connecting end, which is connected to a support roll arranged around the sleeve. The bottom of the support roll is provided with a detection mechanism. The telescopic device adopts any linear drive device in the prior art, such as a cylinder, a crane, etc. The connection method for connecting the telescopic device to the fixed rod can adopt the existing technology and will not be elaborated. The support roll is in the shape of a profile, and the support roll can be made of a plastic material with slight elastic deformation, that is, a material that can make the outer contour of the support roll approximately cylindrical when the support roll is rolled up, such as rubber, aluminum roll, etc. At least four swing rods are evenly distributed symmetrically on the outside of the sleeve in the vertical plane where the sleeve is located in the radial direction. When the elasticity of the material used for the support roll is too large, when the support roll is expanded or contracted due to the rotation of the sleeve and the swing rod is driven, the support roll will have a greater tendency to recover the deformation, and the support roll will transmit radial force to the connecting end. Since the front and rear ends of the swing rod are hinged to the sleeve and the connecting end respectively, the radial force transmitted to the connecting end by the support roll will be decomposed into the radial force of the swing rod on the sleeve and the axial force of the swing rod on the sleeve. Since the swing rod is symmetrically arranged outside the sleeve, the radial forces of the swing rod on the sleeve cancel each other out, and the axial force of the swing rod on the sleeve is blocked by the thread inside the sleeve due to the self-locking property of the thread itself against axial movement. That is, the force of the support roll on the sleeve can hardly make the sleeve move. A locking bolt arranged radially along the sleeve is threadedly connected to a section of the sleeve sidewall where no threads are provided. The locking bolt compresses the fixing rod to increase friction between the locking bolt and the fixing rod. After the sleeve is rotated to a desired position, the locking bolt is tightened to further secure the sleeve in position. The arrangement of the support roll and sleeve allows the support roll to expand or contract in response to the extension or retraction of the swing rod when the sleeve is rotated. Due to the shape and structure of the support roll, the curvature of the outer wall of the support roll changes uniformly with the outer diameter of the support roll during expansion or contraction, and the outer wall of the support roll always maintains a profile that is extremely close to a perfect circle. The thinner the support roll, the closer the outer contour of the support roll is to a perfect circle, the smaller the gap between the support roll and the drill hole, and the more accurately the detection mechanism at the bottom of the support roll can detect the inner wall of the drill hole.

[0008] Furthermore, at least three telescopic rods are evenly distributed in a ring around the fixed rod, with the ends of the telescopic rods distal to the fixed rod connected to the support coil. These telescopic rods are fixedly connected to the fixed rod. Their function is to restrict the axial movement of the support coil along the fixed rod, so that when the swing rod swings on the sleeve, the support coil can only expand or contract radially along the fixed rod, and will not be driven up and down by the swing rod, thereby affecting the expansion or contraction of the support coil.

[0009] Furthermore, an annular groove is provided on the wall surface of the support roll facing the fixed rod, an active embedding portion is provided on the connecting end for embedding into the annular groove, and a driven embedding portion is provided on the end of the telescopic rod away from the fixed rod. The annular groove includes an active annular groove and a driven annular groove, the active embedding portion is located within the active annular groove, and the driven embedding portion is located within the driven annular groove. Baffles are provided at the upper and lower ends of the annular groove on the side facing the fixed rod to prevent the active embedding portion or the driven embedding portion from falling out of the annular groove along the radial direction of the fixed rod. In other words, the telescopic rod and the support roll are connected in a sliding manner, specifically, the driven embedding portion slides within the annular groove. The function of the annular groove, the active embedding portion, and the driven embedding portion is to enable the active embedding portion and the driven embedding portion to move within the annular groove when the outer wall of the support roll expands or contracts, thereby allowing the inner wall of the support roll to expand or contract synchronously with the outer wall.

[0010] Furthermore, the support roll has an overlapping inner and outer layer area, and the wall surface of the support roll facing away from the fixed rod is provided with a protrusion that is designed to fit into the annular groove. A sealing plug of the same shape and size as the annular groove is provided on the end surface of the innermost annular groove of the support roll to prevent the active or passive inserting portion from detaching from the annular groove end surface. This design, with the overlapping inner and outer layers of the support roll, provides space for the support roll to expand outward while maintaining the continuity of the outer wall contour, preventing gaps from forming between the outer walls when the support roll expands.

[0011] Furthermore, the protrusion includes a stopper for contacting the inner wall of the baffle. This stopper allows the stopper on the outer wall of the inner support roll to engage the annular groove on the inner wall of the outer support roll within the overlapping region of the support rolls. Even if the stopper can only enter the annular groove from the end of the annular groove, the two adjacent layers of support rolls are secured, allowing each layer of the support roll to expand or contract synchronously and evenly.

[0012] Furthermore, the width of the raised portion in the radial direction of the fixed rod decreases as the distance from the fixed rod increases. The baffle has a rounded corner at one end toward the fixed rod, and the support coil is provided with a clamping member for clamping the overlapping region of the support coils. The angle between the inner wall of the baffle and the sidewall of the adjacent annular groove is less than or equal to 90°. The shape of the raised portion allows the outer support coil to be directly reeled inwardly against the inner support coil from the outside. The shape of the baffle facilitates the baffle's surface area facing outward from the annular groove to be greater than its surface area facing inward, facilitating the baffle's folding inwardly while simultaneously increasing the difficulty of folding outwardly. This allows the baffle to be folded into the annular groove when located between the inner and outer layers of the support coil, while also limiting the active and passive clamping members. The clamping member ensures that two adjacent layers of the support coil remain in close contact, allowing each layer of the support coil to expand or contract synchronously and evenly.

[0013] Furthermore, the bottom end of the clamping member that contacts the support roll is provided with a clamping protrusion, and the inner and outer sides of the support roll are provided with clamping annular grooves for the clamping protrusions to fit into. The clamping protrusions and the clamping annular grooves can secure the clamping member and prevent it from falling off the support roll.

[0014] Furthermore, the bottom of the support roll is provided with a detection slot for accommodating a detection mechanism. The detection mechanism comprises multiple detectors densely distributed within the slot. When the support roll is unfolded and flattened, the distance between each adjacent detector is the same. The detectors can be pressure sensors, ultrasonic sensors, optical cameras, fiber optic sensing systems, electromagnetic sensors, and other commonly used borehole detectors. The purpose of this design is to ensure that the arc length between each adjacent detector remains the same even after the support roll expands or contracts, thereby ensuring that the detection mechanism maintains high detection accuracy.

[0015] Furthermore, the detection slot is connected to a wire channel for passing wires connected to the detectors. Both the fixed rod and the sleeve are equipped with wire holes for passing the wires. A sealing plate is provided on the bottom of the sleeve to seal it. The bottom opening of the wire hole is located on the axis of the fixed rod, and the top opening of the wire hole is located on the top surface or side wall of the fixed rod, depending on the connection position of the telescopic device and the fixed rod. The purpose of the wire hole is to provide a converging effect on the wires of each detector.

[0016] In a second aspect, a method for using a bored pile hole finder with an adaptive curvature is provided, which is applied to the above-mentioned bored pile hole finder with an adaptive curvature, and comprises the following steps:

[0017] Step S1, connecting the connecting end to the support roll so that there is an inner and outer overlapping area between the support rolls;

[0018] Step S2: Rotate the sleeve to make the swing rod drive the support coil to expand or contract, so that the outer diameter of the support coil is 3-20 mm smaller than the outer diameter of the top of the drill hole;

[0019] Step S3: Connect the fixing rod to the telescopic device and gradually lower the borer into the drill hole.

[0020] The present invention has the beneficial effects:

[0021] 1. By configuring the support roll and the sleeve, the support roll can be expanded or contracted as the swing rod is extended or retracted when the sleeve is rotated. Due to the characteristics of the shape and structure of the support roll itself, the curvature of the outer wall of the support roll can change evenly with the change of the outer diameter of the support roll when the support roll is expanded or contracted, and the outer wall of the support roll can always maintain a profile extremely close to a perfect circle. The thinner the support roll, the closer the outer profile of the support roll is to a perfect circle, the smaller the gap between the support roll and the drill hole, and the more accurately the detection mechanism at the bottom of the support roll can detect the inner wall of the drill hole;

[0022] 2. The telescopic rod can limit the axial movement of the support roll along the fixed rod. When the swing rod swings on the sleeve, the support roll can only expand or contract along the radial direction of the fixed rod, and will not be driven by the swing rod to move up and down, affecting the expansion or contraction effect of the support roll.

[0023] 3. By setting the annular groove, the active embedded part and the driven embedded part, when the outer wall of the support roll expands or contracts, the active embedded part and the driven embedded part can move in the annular groove, so that the inner wall of the support roll can expand or contract synchronously with the outer wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the three-dimensional structure of Example 1;

[0025] Figure 2 Schematic diagram of the cross-sectional structure of Example 1;

[0026] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 4 Schematic diagram of the three-dimensional structure of Example 2;

[0028] Figure 5 Schematic diagram of the cross-sectional structure of Example 2;

[0029] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at B in the middle;

[0030] Figure 7 for Figure 5 Schematic diagram of the enlarged structure of output C.

[0031] Figure markings: 1. Fixed rod; 2. Sleeve; 3. Swing rod; 4. Connecting end; 5. Support roll; 7. Telescopic rod; 8. Annular groove; 801. Active annular groove; 802. Driven annular groove; 9. Active embedded part; 10. Driven embedded part; 11. Baffle; 12. Protrusion; 13. Limiting part; 14. Clamping member; 15. Clamping protrusion; 16. Clamping annular groove; 17. Detection groove; 18. Detector; 19. Wire groove; 20. Wire hole; 21. Locking bolt. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0033] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0034] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "having," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific contexts.

[0035] Example 1

[0036] In the first aspect, a bored pile probe with an adaptive curvature is provided. Figure 1As shown, it includes a fixed rod 1 for connecting to the telescopic device and a sleeve 2 threadedly connected to the outside of the fixed rod 1. The sleeve 2 is evenly and evenly arranged with at least three swing rods 3 in a ring shape on the outside. The swing rods 3 are hinged to the sleeve 2. The end of the swing rod 3 away from the sleeve 2 is hinged to a connecting end 4. The connecting end 4 is connected to a support roll 5 arranged around the sleeve 2. A detection mechanism is provided at the bottom of the support roll 5. The support roll 5 is in the shape of a profile and can be made of a plastic material with slight elastic deformation. That is, when the support roll 5 is rolled up, the outer contour of the support roll 5 is approximately cylindrical, such as rubber, aluminum roll, etc. The outer wall of the bottom of the support roll 5 is made of elastic material. When it touches an obstacle, the deformation of the outer wall of the support roll 5 can be transmitted to the detection mechanism, and the support roll 5 can be restored after passing the obstacle. A locking bolt 21, radially arranged along the sleeve 2, is threadedly connected to the unthreaded section of the sleeve 2's sidewall. The locking bolt 21 compresses the fixing rod 1, increasing the friction between the locking bolt 21 and the fixing rod 1. After the sleeve 2 is rotated to the desired position, the locking bolt 21 is tightened to further secure the sleeve 2. The arrangement of the support roll 5 and sleeve 2 allows the support roll 5 to expand or contract in response to the expansion or contraction of the swing rod 3 as the sleeve 2 rotates. Due to the shape and structure of the support roll 5, the curvature of the outer wall of the support roll 5 changes uniformly with the outer diameter of the support roll 5 during expansion or contraction, ensuring that the outer wall of the support roll 5 always maintains a profile that is extremely close to a perfect circle. The thinner the support roll 5, the closer its outer profile is to a perfect circle, the smaller the gap between the support roll 5 and the borehole, and the more accurately the detection mechanism at the bottom of the support roll 5 can detect the inner wall of the borehole.

[0037] Specifically, such as Figure 2 As shown, at least three telescopic rods 7 are evenly distributed in a ring shape on the outside of the fixed rod 1. The telescopic rods 7 are connected to the support roll 5 at one end away from the fixed rod 1. The telescopic rods 7 are fixedly connected to the fixed rod 1. The telescopic rods 7 include an inner rod and an outer rod sleeved outside the inner rod. The outer rod is fixedly connected to the fixed rod 1, and the inner rod is connected to the support roll 5. The function of the telescopic rods 7 is to limit the axial movement of the support roll 5 along the fixed rod 1 through the arrangement of the telescopic rods 7. When the swing rod 3 swings on the sleeve 2, the support roll 5 can only expand or contract along the radial direction of the fixed rod 1, and will not be driven by the swing rod 3 to move up and down, affecting the expansion or contraction effect of the support roll 5.

[0038] Specifically, such as Figure 2As shown, the support roll 5 is provided with an annular groove 8 on the wall surface facing the fixed rod 1, and an active embedding portion 9 for embedding into the annular groove 8 is provided on the connecting end 4. A driven embedding portion 10 is provided at the end of the telescopic rod 7 away from the fixed rod 1. The annular groove 8 includes an active annular groove 801 and a driven annular groove 802. The active embedding portion 9 is located in the active annular groove 801, and the driven embedding portion 10 is located in the driven annular groove 802. The upper and lower ends of the annular groove 8 facing the fixed rod 1 are provided with baffles 11 for preventing the active embedding portion 9 or the driven embedding portion 10 from falling out of the annular groove 8 along the radial direction of the fixed rod 1. The function of the baffles 11 is that, through the arrangement of the annular groove 8, the active embedding portion 9 and the driven embedding portion 10, when the outer wall of the support roll 5 expands or contracts, the active embedding portion 9 and the driven embedding portion 10 can move in the annular groove 8, so that the inner wall of the support roll 5 can expand or contract synchronously with the outer wall.

[0039] Specifically, such as Figure 1 As shown, the support coil 5 has an overlapping inner and outer layer area. The wall surface of the support coil 5 facing away from the fixed rod 1 is provided with a protrusion 12 for embedding into the annular groove 8. A sealing plug of the same shape and size as the annular groove 8 is provided on the end surface of the innermost annular groove 8 of the support coil 5 to prevent the active embedding portion 9 or the passive embedding portion 10 from disengaging from the end surface of the annular groove 8. This design of the support coil 5 with an overlapping inner and outer layer area provides space for the support coil 5 to expand outward while maintaining the continuity of the outer wall contour, thus preventing the formation of gaps between the outer walls when the support coil 5 expands.

[0040] Specifically, such as Figure 3 As shown, the protrusion 12 includes a stopper 13 for contacting the inner wall of the baffle 11. The function of the stopper 13 is to allow the stopper 13 on the outer wall of the inner support roll 5 to be locked in the annular groove 8 on the inner wall of the outer support roll 5 within the overlapping area of ​​the support rolls 5. Even if the stopper 13 can only enter the annular groove 8 from the end of the annular groove 8, the effect of fixing the two adjacent layers of support rolls 5 is achieved, so that each layer of the support roll 5 can expand or contract synchronously and evenly.

[0041] Specifically, such as Figure 3 As shown, the bottom of the support roll 5 is provided with a detection slot 17 for accommodating the detection mechanism. The detection mechanism comprises multiple detectors 18 densely distributed within the detection slot 17. When the support roll 5 is unfolded and laid flat, the detection slot 17 extends through the front and rear ends of the support roll 5, with the distance between each pair of adjacent detectors 18 being the same. The detectors 18 are pressure sensors. The design of the spacing of the detectors 18 ensures that the arc length between each pair of adjacent detectors 18 remains the same even after the support roll 5 expands or contracts, thereby ensuring that the detection mechanism maintains high detection accuracy.

[0042] Specifically, such as Figure 3As shown, the detection slot 17 is connected to a wire channel 19 for passing the wires connected to the detector 18. Both the fixed rod 1 and the sleeve 2 are provided with wire holes 20 for passing the wires. A sealing plate is provided on the bottom surface of the sleeve 2 to seal the bottom surface of the sleeve 2. The bottom opening of the wire hole 20 is located on the axis of the fixed rod 1, and the top opening of the wire hole 20 is located on the top surface or side wall of the fixed rod 1 according to the connection position of the telescopic device and the fixed rod 1. The purpose of the wire hole 20 is to converge the wires of each detector 18.

[0043] In a second aspect, a method for using a bored pile hole finder with an adaptive curvature is provided, which is applied to the above-mentioned bored pile hole finder with an adaptive curvature, and comprises the following steps:

[0044] Step S1, connecting the connecting end 4 to the supporting roll 5 so that there is an inner and outer overlapping area between the supporting rolls 5;

[0045] Step S2: rotating the sleeve 2 around the fixed rod 1 so that the swing rod 3 drives the support coil 5 to expand or contract, so that the outer diameter of the support coil 5 is 3-20 mm smaller than the outer diameter of the top of the drill hole;

[0046] Step S3: Connect the fixed rod 1 to the telescopic device and gradually lower the borer into the drill hole.

[0047] The following steps are also included:

[0048] Step S1a: Insert the active embedding portion 9 on the connecting end 4 into the active annular groove 801 from the end of the active annular groove 801, and insert the passive embedding portion 10 on the telescopic rod 7 into the passive annular groove 802 from the end of the passive annular groove 802, thereby completing the connection between the connecting end 4 and the supporting coil 5, and the connection between the telescopic rod 7 and the supporting coil 5;

[0049] Step S1b: After the active embedding portion 9 is embedded into the active annular groove 801 and the driven embedding portion 10 is embedded into the driven annular groove 802 and the support roll 5 is wound around once, the raised portion 12 of the inner support roll 5 is inserted into the annular groove 8 of the outer support roll 5, so that the limiting portion 13 and the baffle 11 maintain contact with the side wall of the baffle 11 facing the annular groove 8, thereby completing the connection between the inner support roll 5 and the outer support roll 5;

[0050] Step S3a: The detection mechanism also includes a data interface connected to all wires via a connector. After the fixed rod 1 is connected to the telescopic device, the data interface is connected to a computer to form an Internet of Things sensing and recognition system. This allows the computer to display the signals transmitted by the detector 18 in real time when the bore finder is in use, facilitating its use. The computer can determine the obstacle type based on the collision length or number of collision points in the collision detection circle formed by the fixed rod.

[0051] The working principle of this embodiment is described as follows: after the entire borescope is installed, the height of the hinge between the swing rod 3 and the sleeve 2 is greater than the height of the hinge between the swing rod 3 and the connecting end 4. The fixed rod 1 is fixed, and the sleeve 2 is rotated to make the sleeve 2 rotate around the fixed rod 1.

[0052] When the sleeve 2 is moved axially downward along the fixed rod 1, the distance between the projection of the hinge point between the swing rod 3 and the sleeve 2 on the rotating shaft of the fixed rod 1 and the projection of the telescopic rod 7 on the rotating shaft of the fixed rod 1 increases. Since the support roll 5 is fixed by the telescopic rod 7 and cannot be driven downward by the swing rod 3, the swing rod 3 pushes the support roll 5 outward, causing the inner diameter and outer diameter of the support roll 5 to expand synchronously. During the expansion of the inner wall of the support roll 5, the baffle 11 on the driven annular groove 802 on the inner wall of the support roll 5 drives the telescopic rod 7 to extend, thereby completing the overall expansion of the borescope.

[0053] When the sleeve 2 is moved axially upward along the fixed rod 1, the distance between the projection of the hinge point between the swing rod 3 and the sleeve 2 on the rotating shaft of the fixed rod 1 and the projection of the telescopic rod 7 on the rotating shaft of the fixed rod 1 decreases. Since the support roll 5 is fixed by the telescopic rod 7 and cannot be driven upward by the swing rod 3, the swing rod 3 pulls the support roll 5 inward, causing the inner diameter and outer diameter of the support roll 5 to shrink synchronously. During the process of contraction of the inner wall of the support roll 5, the driven annular groove 802 on the inner wall of the support roll 5 pushes the telescopic rod 7 to shorten, thereby completing the overall contraction of the borescope.

[0054] During the process of lowering the borehole finder deeper into the borehole, if the support roll 5 touches an obstacle in the area of ​​the outer wall of the detection groove 17, the obstacle will cause the outer wall of the detection groove 17 at that location to dent inward, thereby triggering the detector 18 at that location. The detector 18 transmits the hit signal to the computer. By counting the distribution positions of the hit detectors 18, the distribution of obstacles in the borehole can be determined.

[0055] Example 2

[0056] In the first aspect, a bored pile probe with an adaptive curvature is provided. Figure 4As shown, it includes a fixed rod 1 for connecting to the telescopic device and a sleeve 2 threadedly connected to the outside of the fixed rod 1. The sleeve 2 is evenly and evenly arranged with at least three swing rods 3 in a ring shape on the outside. The swing rods 3 are hinged to the sleeve 2. The end of the swing rod 3 away from the sleeve 2 is hinged to a connecting end 4. The connecting end 4 is connected to a support roll 5 arranged around the sleeve 2. A detection mechanism is provided at the bottom of the support roll 5. The support roll 5 is in the shape of a profile and can be made of a plastic material with slight elastic deformation. That is, when the support roll 5 is rolled up, the outer contour of the support roll 5 is approximately cylindrical, such as rubber, aluminum roll, etc. The outer wall of the bottom of the support roll 5 is made of elastic material. When it touches an obstacle, the deformation of the outer wall of the support roll 5 can be transmitted to the detection mechanism, and the support roll 5 can be restored after passing the obstacle. Its function is that, through the arrangement of the support roll 5 and the sleeve 2, when the sleeve 2 is rotated, the support roll 5 can expand or contract following the opening or retraction of the swing rod 3. Due to the characteristics of the shape and structure of the support roll 5 itself, when the support roll 5 expands or contracts, the curvature of the outer wall of the support roll 5 can change evenly with the change of the outer diameter of the support roll 5, and the outer wall of the support roll 5 can always maintain a contour that is extremely close to a perfect circle. The thinner the support roll 5, the closer the outer contour of the support roll 5 is to a perfect circle, the smaller the gap between the support roll 5 and the drill hole, and the more accurate the detection mechanism at the bottom of the support roll 5 is in detecting the inner wall of the drill hole.

[0057] Specifically, such as Figure 5 As shown, at least three telescopic rods 7 are evenly distributed in a ring shape on the outside of the fixed rod 1. The telescopic rods 7 are connected to the support roll 5 at one end away from the fixed rod 1. The telescopic rods 7 are fixedly connected to the fixed rod 1. The telescopic rods 7 include an inner rod and an outer rod sleeved outside the inner rod. The outer rod is fixedly connected to the fixed rod 1, and the inner rod is connected to the support roll 5. The function of the telescopic rods 7 is to limit the axial movement of the support roll 5 along the fixed rod 1 through the arrangement of the telescopic rods 7. When the swing rod 3 swings on the sleeve 2, the support roll 5 can only expand or contract along the radial direction of the fixed rod 1, and will not be driven by the swing rod 3 to move up and down, affecting the expansion or contraction effect of the support roll 5.

[0058] Specifically, such as Figure 5As shown, the support roll 5 is provided with an annular groove 8 on the wall surface facing the fixed rod 1, an active embedding portion 9 for embedding into the annular groove 8 is provided on the connecting end 4, a driven embedding portion 10 is provided on the end of the telescopic rod 7 away from the fixed rod 1, and baffles 11 are provided at the upper and lower ends of the annular groove 8 facing the fixed rod 1 to prevent the connecting end 4 from falling out of the annular groove 8 along the radial direction of the fixed rod 1. The annular groove 8 includes an active annular groove 801 and a driven annular groove 802. The active embedding portion 9 is located in the active annular groove 801, and the driven embedding portion 10 is located in the driven embedding portion 10. The function is that, through the arrangement of the annular groove 8, the active embedding portion 9 and the driven embedding portion 10, when the outer wall of the support roll 5 expands or contracts, the active embedding portion 9 and the driven embedding portion 10 can move in the annular groove 8, so that the inner wall of the support roll 5 can expand or contract synchronously with the outer wall.

[0059] Specifically, such as Figure 4 As shown, the support coil 5 has an overlapping inner and outer layer area. The wall surface of the support coil 5 facing away from the fixed rod 1 is provided with a protrusion 12 for embedding into the annular groove 8. A sealing plug of the same shape and size as the annular groove 8 is provided on the end surface of the innermost annular groove 8 of the support coil 5 to prevent the active embedding portion 9 or the passive embedding portion 10 from disengaging from the end surface of the annular groove 8. This design of the support coil 5 with an overlapping inner and outer layer area provides space for the support coil 5 to expand outward while maintaining the continuity of the outer wall contour, thus preventing the formation of gaps between the outer walls when the support coil 5 expands.

[0060] Specifically, such as Figure 6 As shown, the width of the protrusion 12 in the radial direction of the fixed rod 1 decreases as the distance from the fixed rod 1 increases. The baffle 11 has a rounded corner at one end facing the fixed rod 1. The support roll 5 is provided with a clamping member 14 for clamping the overlapping area of ​​the support roll 5. The angle between the inner wall of the baffle 11 and the side wall of the adjacent annular groove 8 is less than or equal to 90 degrees. Its function is that, through the design of the shape of the protrusion 12, the outer support roll 5 can be directly rolled up from the outside and close to the inner support roll 5; through the setting of the shape of the baffle 11, it is convenient to make the surface area of ​​the baffle 11 facing the outside of the annular groove 8 larger than the surface area of ​​the baffle 11 facing the inside of the annular groove 8, which makes it convenient for the baffle 11 to fold into the annular groove 8 while increasing the difficulty of folding the baffle 11 outward, so that the baffle 11 can be folded and stored in the annular groove 8 when it is located between the inner and outer layers of the support roll 5, and can also play a limiting role on the active clamping part and the driven clamping part; through the setting of the clamping part 14, the two adjacent layers of the support roll 5 can be kept in close contact, so that each layer of the support roll 5 can expand or contract synchronously and evenly.

[0061] Specifically, such as Figure 7As shown, the bottom end of the clamping member 14 that contacts the support roll 5 is provided with a clamping protrusion 15, and the inner and outer sides of the support roll 5 are provided with a clamping annular groove 16 for the clamping protrusion 15 to be inserted into. The purpose of the clamping protrusion 15 and the clamping annular groove 16 is to fix the clamping member 14 and prevent the clamping member 14 from falling off the support roll 5.

[0062] Specifically, such as Figure 6 As shown, the bottom of the support roll 5 is provided with a detection slot 17 for accommodating the detection mechanism. The detection mechanism includes multiple detectors 18 densely distributed within the detection slot 17. When the support roll 5 is unfolded and laid flat, the detection slot 17 extends through the front and rear ends of the support roll 5, and the distance between each two adjacent detectors 18 is the same. This function is to ensure that the arc length between each two adjacent detectors 18 remains the same even after the support roll 5 expands or contracts, thereby ensuring that the detection mechanism can maintain high detection accuracy.

[0063] Specifically, such as Figure 6 As shown, the detection slot 17 is connected to a wire channel 19 for passing the wires connected to the detector 18. Both the fixed rod 1 and the sleeve 2 are provided with wire holes 20 for passing the wires. A sealing plate is provided on the bottom surface of the sleeve 2 to seal the bottom surface of the sleeve 2. The bottom opening of the wire hole 20 is located on the axis of the fixed rod 1, and the top opening of the wire hole 20 is located on the top surface or side wall of the fixed rod 1 according to the connection position of the telescopic device and the fixed rod 1. The purpose of the wire hole 20 is to converge the wires of each detector 18.

[0064] In a second aspect, a method for using a bored pile borer with an adaptive curvature is provided, which is applied to the above-mentioned bored pile borer with an adaptive curvature, and comprises the following steps:

[0065] Step S1, connecting the connecting end 4 to the supporting roll 5 so that there is an inner and outer overlapping area between the supporting rolls 5;

[0066] Step S2: rotating the sleeve 2 around the fixed rod 1 so that the swing rod 3 drives the support coil 5 to expand or contract, so that the outer diameter of the support coil 5 is 3-20 mm smaller than the outer diameter of the top of the drill hole;

[0067] Step S3: Connect the fixed rod 1 to the telescopic device and gradually lower the borer into the drill hole.

[0068] The following steps are also included:

[0069] Step S1a: Insert the active embedding portion 9 on the connecting end 4 into the active annular groove 801 from the end of the active annular groove 801, and insert the passive embedding portion 10 on the telescopic rod 7 into the passive annular groove 802 from the end of the passive annular groove 802, thereby completing the connection between the connecting end 4 and the supporting coil 5, and the connection between the telescopic rod 7 and the supporting coil 5;

[0070] Step S1c, after the active embedding portion 9 is embedded into the active annular groove 801 and the driven embedding portion 10 is embedded into the driven annular groove 802 and the support roll 5 is wound around once, the protrusion 12 of the inner support roll 5 is inserted into the annular groove 8 of the outer support roll 5, so that the protrusion 12 of the inner support roll 5 presses the baffle 11 of the outer support roll 5 into the annular groove 8 of the outer support roll 5, and then the clamping member 14 is clamped from top to bottom on the inner and outer surfaces of the support roll 5, so that the clamping protrusion 15 extends into the clamping annular groove 16, thereby completing the connection between the inner support roll 5 and the outer support roll 5;

[0071] Step S3a: The detection mechanism also includes a data interface connected to all wires via a connector. After the fixed rod 1 is connected to the telescopic device, the data interface is connected to a computer to form an Internet of Things sensing and recognition system. This allows the computer to display the signals transmitted by the detector 18 in real time when the bore finder is in use, facilitating its use. The computer can determine the obstacle type based on the collision length or number of collision points in the collision detection circle formed by the fixed rod.

[0072] The remaining principles are the same as those in Example 1.

[0073] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Based on the technical essence of the present invention and within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement of the above embodiment shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A bored pile probe with adaptive curvature, characterized by: The invention comprises a fixed rod (1) for connecting with the telescopic device and a sleeve (2) threadedly connected to the outside of the fixed rod (1); at least three swing rods (3) are evenly arranged on the outside of the sleeve (2) in a ring shape; the swing rods (3) are hinged to the sleeve (2); one end of the swing rod (3) away from the sleeve (2) is hinged to a connecting end (4); the connecting end (4) is connected to a support roll (5) arranged around the sleeve (2); the support roll (5) is a double-layer or multi-layer structure formed by curling a continuous sheet material; a detection mechanism is provided at the bottom of the support roll (5); At least three telescopic rods (7) are evenly distributed in a ring shape outside the fixed rod (1), and one end of the telescopic rod (7) away from the fixed rod (1) is connected to the support coil (5). An annular groove (8) is provided on the wall surface of the support roll (5) facing the fixed rod (1), an active embedding portion (9) for embedding into the annular groove (8) is provided on the connecting end (4), and a driven embedding portion (10) is provided at one end of the telescopic rod (7) away from the fixed rod (1), the annular groove (8) includes an active annular groove (801) and a driven annular groove (802), the active embedding portion (9) is located in the active annular groove (801), and the driven embedding portion (10) is located in the driven annular groove (802), and baffles (11) are provided at the upper and lower ends of the annular groove (8) facing the fixed rod (1) to prevent the active embedding portion (9) or the driven embedding portion (10) from falling out of the annular groove (8) along the radial direction of the fixed rod (1).

2. The self-adaptive arc bored pile probe according to claim 1, characterized in that: The support roll (5) has an area where the inner and outer layers overlap, and a protrusion (12) for embedding into the annular groove (8) is provided on the wall surface of the support roll (5) facing away from the fixing rod (1).

3. The self-adaptive arc bored pile probe according to claim 2, characterized in that: The raised portion (12) includes a limiting portion (13) for contacting the inner wall of the baffle (11).

4. The self-adaptive arc bored pile probe according to claim 2, characterized in that: The width of the protrusion (12) in the radial direction of the fixed rod (1) decreases as the distance from the fixed rod (1) increases, the baffle (11) is rounded at one end toward the fixed rod (1), and a clamping member (14) for clamping the overlapping area of ​​the support roll (5) is provided on the support roll (5).

5. The self-adaptive arc bored pile probe according to claim 4, characterized in that: The bottom end of the clamping member (14) in contact with the support roll (5) is provided with a clamping protrusion (15), and the inner and outer sides of the support roll (5) are provided with a clamping ring groove (16) for the clamping protrusion (15) to be embedded.

6. The self-adaptive arc bored pile probe according to claim 1, characterized in that: A detection slot (17) for accommodating a detection mechanism is provided at the bottom of the support roll (5). The detection mechanism comprises a plurality of detectors (18) densely distributed in the detection slot (17). When the support roll (5) is unfolded and laid flat, the distance between every two adjacent detectors (18) is the same.

7. The self-adaptive arc bored pile probe according to claim 6, characterized in that: The detection groove (17) is connected to a wire groove (19) for allowing a wire connected to the detector (18) to pass through, and the fixing rod (1) and the sleeve (2) are both provided with a wire hole (20) for allowing the wire to pass through.

8. A method for using a bored pile probe with an adaptive curvature, characterized by: The self-adaptive arc bored pile probe according to any one of claims 1 to 7 comprises the following steps: Step S1, connecting the connecting end (4) to the supporting roll (5) so that there are inner and outer overlapping areas between the supporting rolls (5); Step S2, causing the sleeve (2) to rotate around the fixed rod (1), causing the swing rod (3) to drive the support coil (5) to expand or contract, so that the outer diameter of the support coil (5) is 3-20 mm smaller than the outer diameter of the top end of the drill hole; Step S3: Connect the fixed rod (1) to the telescopic device and gradually lower the borer into the drill hole.

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