A smart detection drill bit for a mixing pile, a pile-forming device and a method

Abstract

The application discloses a kind of mixing pile wisdom detection drill bit, piling equipment and method, it is related to mixing pile construction technical field, including drill bit, connector and detector, drill bit one end inner wall is equipped with electrically conductive column;Connector is inserted with drill bit, and electrically conductive column female seat that is equipped with the electrically conductive column cooperation is set in connector;Rotary shaft is coaxially installed in the connector, and electrically conductive column disc is arranged between one end of rotary shaft and electrically conductive column female seat, and the other end is connected with detector, to make detector can rotate with rotary shaft;Detector includes multiple detection units that are sequentially connected.This application can realize the advanced detection of underground soil layer in the construction process of cement mixing pile, and then realize the real-time adjustment of piling process for different soil layers.

Description

Technical Field

[0001] This invention relates to the field of mixing pile construction technology, and in particular to a smart detection drill bit, pile forming equipment and method for mixing piles. Background Technology

[0002] Cement mixing piles are a highly effective method for soft soil foundation treatment. Extensive engineering practice has demonstrated that different soil conditions significantly impact the quality of cement mixing piles. However, existing cement mixing pile construction equipment is limited in its technology and cannot optimize parameters such as grouting pressure, drill bit speed, and grouting volume for different soil layers. It is only suitable for some easily disturbed silty soils, and in certain soil layers with high consolidation and strength, serious engineering quality problems such as uneven mixing and pile breakage may occur. Adjusting the pile formation process for different soil layers requires advanced soil layer detection and depth calibration in the construction area; however, existing cement mixing pile equipment cannot effectively detect the soil strata. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide a smart detection drill bit, pile forming equipment, and method for cement mixing piles, which can enable advanced detection of underground soil layers during the construction of cement mixing piles, thereby achieving real-time adjustment of the pile forming process for different soil layers.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0005] In a first aspect, embodiments of the present invention provide a smart detection drill bit for mixing piles, comprising:

[0006] The drill bit has a conductive post on the inner wall of one end.

[0007] A connector is inserted into a drill bit, and the connector has a conductive post female seat that mates with a conductive post; a rotating shaft is coaxially mounted inside the connector, a conductive post disk is provided between one end of the rotating shaft and the conductive post female seat, and the other end is connected to a detector so that the detector can rotate with the rotating shaft.

[0008] The detector consists of multiple detection units connected in sequence.

[0009] As a further implementation, the inner wall of the drill bit is provided with several limiting grooves, and the outer side of the connector is provided with slide rails that correspond one-to-one with the limiting grooves.

[0010] As a further implementation, bearings are installed at both ends of the rotating shaft, and retaining rings are respectively installed on the opposite sides of the two bearings.

[0011] As a further implementation, the rotating shaft has a cavity inside, and the cavity is connected to a conductive wire and a quick-connect terminal to connect with the conductive wire inside the detector to form a circuit.

[0012] As a further implementation, the detector includes a humidity sensor, a pore pressure sensor, and a static cone penetrometer connected in sequence, with stabilizing fins mounted on the outer sides of the humidity sensor and the static cone penetrometer, respectively.

[0013] As a further implementation, the conductive post disk is disposed in the slot of the connector; the conductive post disk has a plurality of banana-head conductive posts at the end facing the rotation shaft.

[0014] As a further implementation, one end of the rotating shaft is provided with a conductive ring groove that is adapted to the conductive post of the banana head.

[0015] As a further implementation, the other end of the rotating shaft is provided with an internal threaded hole, through which it is connected to the detector.

[0016] Secondly, embodiments of the present invention also provide a mixing pile forming device, including the aforementioned smart detection drill bit, which is connected to the mixing pile device.

[0017] Thirdly, embodiments of the present invention also provide a method for using a smart detection drill bit for mixing piles, including:

[0018] Connect the intelligent detection drill bit for the mixing pile, replace the waterproof protective head below the drill bit with a detector, connect the internal circuit connector, and start the equipment for testing.

[0019] The operating equipment drives the intelligent detection drill bit of the mixing pile to press into the soil until the stabilizing wing of the static penetration probe is inserted into the soil.

[0020] The equipment descends at a constant speed, and water spraying begins when the drill bit's nozzle reaches the ground, continuing until the drill bit reaches the set depth.

[0021] The equipment is raised according to the set parameters, stops spraying water and sprays cement slurry until the equipment's spray nozzle is raised to the ground, stops spraying cement slurry, and the equipment continues to rise until the bottom of the detector is a set distance from the ground and then stops.

[0022] After the construction is completed, the drill bit detector will be removed and replaced with a waterproof protective head.

[0023] The beneficial effects of this invention are as follows:

[0024] (1) By installing a detector in the drill bit, the present invention can complete the advance detection of the underground soil layer during the construction of cement mixing piles, and feed back the parameters of the lower soil layer to the ground control equipment before the pile is formed, so as to realize the advance detection and real-time adjustment of the pile forming process, which can effectively achieve high-quality reinforcement of the foundation.

[0025] (2) The drill bit of the present invention is connected to the detector through a connector. A rotating shaft is installed inside the connector, and a conductive column is installed on the top of the rotating shaft. The rotating shaft is used to realize the rotational support and rotational conductivity functions during the working process, thereby realizing the relatively static and uniform downward pressure of the detector during the rotating drilling process of the drill bit. Attached Figure Description

[0026] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0027] Figure 1 This is a structural schematic diagram of the present invention according to one or more embodiments;

[0028] Figure 2 This is a drill bit-detector assembly diagram according to one or more embodiments of the present invention;

[0029] Figure 3 This is a schematic diagram of the drill bit structure according to one or more embodiments of the present invention;

[0030] Figure 4 This is a schematic diagram of the connector structure according to one or more embodiments of the present invention;

[0031] Figure 5 yes Figure 4 AA cross-section view;

[0032] Figure 6 This is a schematic diagram of the detector structure according to one or more embodiments of the present invention;

[0033] Figure 7 This is a schematic diagram of the rotating shaft structure according to one or more embodiments of the present invention;

[0034] Figure 8 This is a schematic diagram of the conductive column disk structure according to one or more embodiments of the present invention;

[0035] Figure 9 This is a bottom view of the conductive column disk according to one or more embodiments of the present invention;

[0036] Figure 10 This is a schematic diagram of the waterproof protective head structure according to one or more embodiments of the present invention.

[0037] The components include: 1. Drill bit; 2. Connector; 3. Detector; 4. Rotary shaft; 5. Conductive post disk; 6. Annular sealing gasket; 7. O-ring seal; 8. Bearing; 9. Snap ring; 10. Rotary sealing ring; 101. Conductive post; 102. Limiting groove; 103. External threaded hole; 201. Snap groove; 202. Slide rail; 203. Internal threaded hole; 204. Conductive post female seat; 205. Snap ring groove; 301. Static penetration probe; 302. Pore pressure sensor; 303. Humidity sensor; 304. Stabilizing wing; 305. Threaded post; 401. Conductive ring groove; 402. Inner cavity; 403. Internal threaded hole; 501. Banana head conductive post; 11. Waterproof protective head; 601. Threaded post. Detailed Implementation

[0038] Example 1:

[0039] This embodiment provides a smart detection drill bit for mixing piles, such as Figure 1 As shown, it includes a drill bit 1, a connector 2, and a detector 3. The drill bit 1 is connected to the detector 3 through the connector 2.

[0040] To ensure the overall waterproofness of the components, an annular sealing gasket 6 is installed between the drill bit 1 and the connector 2, a rotary sealing ring is installed between the rotating shaft and the connector, and an O-ring 7 is installed on the contact surface between the rotating shaft and the detector.

[0041] This embodiment uses Figure 1 The directions shown are for reference to define the upper and lower positions.

[0042] like Figure 3 As shown, the drill bit 1 is cylindrical in shape. Its top end is used to connect to the mixing pile equipment, and the bottom inner wall is provided with a limiting groove 102. The limiting groove 102 is opened along the axial direction of the drill bit 1 and has a certain length. The limiting groove 102 cooperates with the slide rail 202 on the outside of the connector 2 to limit the relative rotation between the drill bit 1 and the connector 2.

[0043] In this embodiment, two limiting slides 102 are arranged opposite each other; of course, in other embodiments, the number of limiting slides 102 can be adjusted.

[0044] The drill bit 1 has an external threaded hole 103 at its bottom end, and a connector is installed in the external threaded hole 103 to connect and fix it to the connector 2. A conductive post 101 is also fixed to the inner wall of the drill bit 1.

[0045] like Figure 4 and Figure 5 As shown, the outer wall of connector 2 is provided with slide rails 202 that correspond one-to-one with the limiting slide grooves 102, and the slide rails 202 are located inside the limiting slide grooves 102. The outer wall of connector 2 is also provided with internal thread holes 203, which correspond to external thread holes 103 and are fixed by internal hexagonal screws with adhesive.

[0046] The connector 2 includes a cylindrical section and a frustum section connected as one piece. The slide rail 202 is set on the cylindrical section so that the cylindrical section is inserted into the drill bit 1; the frustum section is connected to the detector 3.

[0047] like Figure 2 As shown, the cylindrical section of connector 2 is provided with a mounting groove of a certain depth. The bottom of the mounting groove is connected to the mounting hole, which penetrates the frustoconical section of connector 2. A rotating shaft 4 is coaxially mounted in the mounting hole, and bearings 8 are mounted at both ends of the rotating shaft 4. Snap rings 9 are installed on the side of the two bearings 8 that are far apart from each other. The snap rings 9 are located in the snap ring groove 205, and the vertical displacement of the rotating shaft 4 and bearings 8 is restricted by the snap rings 9.

[0048] like Figure 4 and Figure 5 As shown, a conductive post female seat 204 is provided in the mounting groove of connector 2, and the conductive post female seat 204 mates with the conductive post 101. A conductive post disk 5 is provided between the bottom of the conductive post female seat 204 and the rotating shaft 4, and the conductive post disk 5 is installed in the slot 201 opened inside connector 2.

[0049] like Figure 8 and Figure 9 As shown, the conductive post disk 5 is generally disc-shaped, with symmetrical protrusions on both sides. These protrusions are positioned within the slot 201 and secured with screws. The bottom surface of the conductive post disk 5 has several banana-head conductive posts 501. In this embodiment, the banana-head conductive posts 501 are arranged in a row at intervals along the center of the conductive post disk 5. The banana-head conductive posts 501 cooperate with the conductive ring groove 401 at the top of the rotating shaft 4 to achieve conductive connection between the relatively rotating components.

[0050] like Figure 7 As shown, the diameter of the middle section of the rotating shaft 4 is larger than that of both ends to form a shoulder for mounting the bearing 8. A conductive ring groove 401 is provided at the top of the rotating shaft 4, which engages with the banana-head conductive post 501. The rotating shaft 4 has an internal cavity 402, which is connected to a conductive wire and a quick-connect connector, allowing connection to the conductive wire inside the detector 3 to form a pathway. The bottom of the rotating shaft 4 has an internal threaded hole 403, through which a threaded connection to the detector 3 is achieved.

[0051] like Figure 6 As shown, the top of the detector 3 is a threaded post 305, which mates with the internal threaded hole 403 of the rotating shaft 4. In use, the detector 3 replaces the waterproof protective head 11 at the bottom of the drill bit 1, as shown... Figure 10 As shown, one end of the waterproof protective head 11 is a tapered tip, and the other end is provided with a threaded post 601, which is connected to the drill bit 1.

[0052] The detector 3 is equipped with multiple stabilizing wings 304 circumferentially. These stabilizing wings 304 restrict the rotation of the detector 3 within the soil, reducing the impact of drill bit 1 rotation on detection accuracy. In this embodiment, stabilizing wings 304 are installed near both ends of the detector 3. The stabilizing wing 304 near the top has a trapezoidal structure, and its outermost edge has a downward slope to adapt to the drilling direction. The stabilizing wing 304 near the bottom of the detector 3 has a triangular structure, with its hypotenuse located on the outermost side.

[0053] Detector 3 is equipped with various detection elements, such as a static cone penetrometer 301, a pore pressure sensor 302, and a humidity sensor 303, which are selected according to the detection requirements; for example... Figure 6 As shown, the humidity sensor 303, the pore pressure sensor 302, and the static cone penetration test probe 301 are connected in sequence from top to bottom, with the humidity sensor 303 and the static cone penetration test probe 301 having a fixed stabilizing wing 304 on their outer sides.

[0054] The usage method of this embodiment is as follows:

[0055] 1) Select the starting work point, level the equipment, connect the intelligent detection drill bit for the mixing pile, replace the waterproof protective head below drill bit 1 with detector 3, connect the internal circuit connector, and start the equipment for testing;

[0056] 2) Run the equipment to drive the intelligent detection drill bit of the mixing pile into the soil until the stabilizing wing 304 at the static penetration probe 301 is inserted into the soil, and start the automatic operation program of the equipment.

[0057] 3) The equipment drills down at a constant speed. When the grout nozzle of drill bit 1 reaches the ground, water is sprayed until drill bit 1 reaches the set depth. At this time, the soil layer detection data is transmitted to the central control unit of the equipment. After data processing, soil layer depth and soil type data are generated. Based on the pre-set pile type parameters, the pre-set key parameters such as grouting pressure at different depth nozzles and drill bit lifting speed are completed.

[0058] 4) The equipment is raised according to the set parameters, the water spraying stops and the cement slurry is sprayed until the equipment spray nozzle is raised to the ground, the spraying stops, and the equipment continues to be raised until the bottom of the detector 3 is about 1m from the ground.

[0059] 5) Move the pile driver to the location as required by the project, and repeat steps 3-4 until the construction is completed. After the construction is completed, remove the drill bit detector and replace it with the waterproof protective head 11.

[0060] This embodiment uses a special rotating shaft 4 to achieve rotational support and rotational conductivity during the working process, thereby enabling the detector 3 to remain relatively stationary and press down at a uniform speed during the rotation of the drill bit 1. The detector 3 can be used to perform advanced detection of underground soil layers during the construction of cement mixing piles, thereby enabling real-time adjustment of pile forming processes for different soil layers.

[0061] Example 2:

[0062] This embodiment provides a mixing pile forming device, including the mixing pile smart detection drill bit described in Embodiment 1 and the mixing pile device connected to the mixing pile smart detection drill bit.

[0063] Example 3:

[0064] This embodiment provides a method for using a smart detection drill bit for mixing piles, including the following steps:

[0065] (1) Install the bearing 8 into both ends of the rotating shaft 4, press it into the connector 2, apply grease, and then place the snap ring 9 into the snap ring groove 205 of the connector 2; place the rotating sealing ring 10 between the rotating shaft 4 and the connector 2; assemble the static penetration probe 301, the pore pressure sensor 302, and the humidity sensor 303 in sequence to form a detector 3 with a length of 50CM. Apply sealant and install a sealing gasket at the joint.

[0066] The internal wire plug of the rotating shaft 4 is connected to the internal wire of the detector 3 in sequence and marked. After adding an O-ring 7 to the top of the threaded post 305 of the detector 3, tighten it. Place the conductive post disk 5 in the slot 201 and fix it with screws. At this time, the banana head conductive post 501 at the lower end of the conductive post disk 5 is inserted into the conductive ring groove 401 in sequence. Connect the upper end wire of the conductive post disk 5 to the wire of the connector 2 in sequence and mark it.

[0067] Place the annular sealing gasket 6 at the bottom of the drill bit 1, push the slide rail 202 of the connector 2 into the bottom of the drill bit 1 along the limiting slide groove 102 and press it until the outer threaded hole 103 of the drill bit 1 and the inner threaded hole 203 of the connector 2 are coaxial, and screw in the glued bolt to fix it.

[0068] (2) Select the starting point, level the equipment, connect the intelligent detection drill bit for mixing piles, replace the waterproof protective head 11 below the drill bit 1 with the detector 3, connect the internal circuit connector, and start the equipment for testing.

[0069] (3) Run the equipment to drive the intelligent detection drill bit of the mixing pile to press into the soil until the stabilizing wing 304 at the static penetration probe 301 is inserted into the soil and start the automatic operation program of the equipment.

[0070] The length of detector 3 is set at about 50cm. The stabilizing wing 304 at the static probe 301 is 9cm long, 4cm high, and 3mm thick, with the thin end 10cm away from the probe tip.

[0071] (4) The equipment drills down at a constant speed of 1.2m / min. When the grouting nozzle of drill bit 1 reaches the ground, water is sprayed until drill bit 1 reaches the set depth of 10m. At this time, the soil layer detection data is transmitted to the central control unit of the equipment. After data processing, the soil layer depth and soil type data are generated. Based on the pre-set pile type parameters, the pre-set key parameters such as grouting pressure at different depth grouting nozzles and the lifting speed of drill bit 1 are completed.

[0072] (5) The equipment is raised according to the set parameters, the water spraying stops and the cement slurry is sprayed until the equipment spray nozzle is raised to the ground, the spraying stops, and the equipment continues to be raised until the bottom of the detector 3 is about 1m from the ground.

[0073] (6) Move the pile driver location according to the project requirements, repeat steps 3-4 until the construction is completed. After the construction is completed, remove the detector 3 and replace it with the waterproof protective head 11.

[0074] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A smart detection drill bit for mixing piles, characterized in that, include: The drill bit has a conductive post on the inner wall of one end. A connector is inserted into a drill bit, and the connector has a conductive post female seat that mates with a conductive post; a rotating shaft is coaxially mounted inside the connector, a conductive post disk is provided between one end of the rotating shaft and the conductive post female seat, and the other end is connected to a detector so that the detector can rotate with the rotating shaft; bearings are installed at both ends of the rotating shaft, and retaining rings are respectively provided on the opposite sides of the two bearings. The conductive post disk is disposed in the slot of the connector; the conductive post disk has a plurality of banana head conductive posts at one end facing the rotating shaft; the rotating shaft has a conductive ring groove adapted to the banana head conductive posts at one end. The detector consists of multiple detection units connected in sequence.

2. The intelligent detection drill bit for mixing piles according to claim 1, characterized in that, The inner wall of the drill bit is provided with several limiting grooves, and the outer side of the connector is provided with slide rails that correspond one-to-one with the limiting grooves.

3. The intelligent detection drill bit for mixing piles according to claim 1, characterized in that, The rotating shaft has a cavity inside, and the cavity is connected to a conductive wire and a quick-connect terminal to connect with the conductive wire inside the detector to form a circuit.

4. The intelligent detection drill bit for mixing piles according to claim 1, characterized in that, The detector includes a humidity sensor, a pore pressure sensor, and a static cone penetrometer connected in sequence, with stabilizing wings installed on the outer sides of the humidity sensor and the static cone penetrometer, respectively.

5. The intelligent detection drill bit for mixing piles according to claim 1, characterized in that, The other end of the rotating shaft is provided with an internal threaded hole, through which it is connected to the detector.

6. A mixing pile forming device, characterized in that, Includes the smart detection drill bit as described in any one of claims 1-5, wherein the smart detection drill bit is connected to the mixing pile equipment.

7. The method of using a smart detection drill bit for mixing piles as described in any one of claims 1-5, characterized in that, include: Connect the intelligent detection drill bit for the mixing pile, replace the waterproof protective head below the drill bit with a detector, connect the internal circuit connector, and start the equipment for testing. The operating equipment drives the intelligent detection drill bit of the mixing pile to press into the soil until the stabilizing wing of the static penetration probe is inserted into the soil. The equipment descends at a constant speed, and water spraying begins when the drill bit's nozzle reaches the ground, continuing until the drill bit reaches the set depth. The equipment is raised according to the set parameters, stops spraying water and sprays cement slurry until the equipment's spray nozzle is raised to the ground, stops spraying cement slurry, and the equipment continues to rise until the bottom of the detector is a set distance from the ground and then stops. After the construction is completed, the drill bit detector will be removed and replaced with a waterproof protective head.

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