An integrated steel casing installation device and method of use thereof

Abstract

The application discloses an integrated steel casing sinking device and a use method thereof, and the device comprises a spiral drill rod, a motion isolation unit, an elastic centering unit and the like. The outer wall of the spiral drill rod is provided with paddle-shaped blades capable of continuously rotating and ascending. The motion isolation unit comprises a positioning assembly, a positioning base body, a clamping groove arranged on the wall of the steel casing, and a clamping unit. The elastic centering unit comprises an abutting wheel, a rotating connecting block, a sliding telescopic rod, a centering spring sleeved on the outer wall of the sliding telescopic rod, a tail limiting groove and a drilling condition sensing unit. The spiral drill rod is used as a pile driving bit, so that the technical effect of excavating soil layers is achieved, and the paddle-shaped blades capable of spirally ascending are simultaneously used to automatically transport the excavated soil upwards. In addition, the motion state of the bit is isolated by using the motion isolation device, so that the motion isolation between the steel casing and the spiral drill rod rotating in the middle is achieved as a whole, and the rotation of the steel casing caused by the motion of the spiral drill rod is effectively blocked.

Description

Technical Field

[0001] This invention belongs to the field of steel casing construction technology, and more specifically, relates to an integrated steel casing sinking device and its usage method. Background Technology

[0002] With the rapid development of society and economy, the number of high-rise buildings in cities is increasing, and builders are paying more and more attention to the construction of pile foundations. Cast-in-place pile construction is a very important branch of pile foundation construction and is widely used in the underground foundations of high-rise buildings in major cities. Currently, during the construction of cast-in-place piles, due to different geological structures, the construction process sometimes faces the risk of soil collapse on the inner surface of the pile, which will seriously affect the construction quality.

[0003] To address the aforementioned issues, during on-site construction, the steel casing of the appropriate size is typically transported to the pre-designed pile location using handling equipment. Then, mechanical devices are used to apply downward pressure to the steel casing until it is completely embedded in the soil. Finally, a drilling rig is used to excavate the soil layer inside the steel casing, completing the construction operation. This technical solution, through the coordinated use of multiple machines and utilizing the steel casing as a supporting structure for the inner wall of the pile, effectively prevents the collapse of the soil layer on the inner surface of the pile. However, the following technical problems still exist: (1) When pressing the steel casing downwards using mechanical devices, the sinking process is usually completed by mechanical action of vibration and downward pressure. During vibration, tilting often occurs. Therefore, mechanical support is required for the steel casing during construction to ensure that the verticality meets the construction requirements, which increases the difficulty of construction; (2) The construction of the steel casing requires three major steps: transporting it to the preset point, sinking it into the soil layer, and excavating the internal soil layer. At the same time, three corresponding mechanical devices are required to assist in the construction, resulting in numerous construction steps and high construction costs; (3) No integrated auxiliary construction device that can reduce construction steps has been proposed in the existing technology. Summary of the Invention

[0004] To address the aforementioned deficiencies or improvement needs of existing technologies, this invention provides an integrated steel casing placement device. Using a spiral drill rod as the piling drill bit, it not only achieves the technical effect of excavating soil layers but also simultaneously utilizes a spirally rising paddle-shaped blade structure to automatically transport the excavated soil upwards, combining excavation with soil removal. This significantly reduces the tedious construction steps of repeated drilling and excavation, saving labor. Furthermore, by employing a motion isolation device to isolate the movement of the drill bit, it effectively prevents interference between the movement of the drill rod and the motion isolation component. Simultaneously, it engages with the steel casing through a snap-fit ​​component. Combined with an elastic centering unit, the elastic force adjusts the steel casing and the motion isolation device component to an axially aligned state. Overall, it achieves motion isolation between the steel casing and the rotating spiral drill rod, effectively preventing the rotation of the steel casing caused by the movement of the spiral drill rod. This reduces the drilling rig's output power while ensuring the steel casing is placed and installed in a stable, stationary state. According to a first aspect of this invention, an integrated steel casing placement device includes: A spiral drill rod with a polished rod fixedly connected to its upper part. The upper end of the polished rod is coaxially fixedly connected to the output end of the drilling rig via a coupling. The outer wall of the spiral drill rod is provided with continuously rotating and rising paddle-shaped blades. The motion isolation unit includes a positioning component for isolating the rotation state of the auger drill rod and positioning the connected steel casing. The positioning component includes a positioning base, a snap-fit ​​groove provided on the wall of the steel casing, and a snap-fit ​​unit that snaps into the snap-fit ​​groove and is provided with a sliding telescopic controllable snap-fit ​​connector. The elastic centering unit that abuts against the inner wall of the steel casing includes an abutting wheel, a rotating connecting block rotatably connected to the abutting wheel, a sliding telescopic rod coaxially fixed at the right end of the rotating connecting block, a centering spring sleeved on the outer wall of the sliding telescopic rod, and a tail limiting groove for limiting and preventing slippage. The abutting wheel is slidably connected to the centering component sliding groove disposed inside the positioning base. The drilling condition sensing unit is fixedly installed at the rotational junction of the positioning component and the drill rod. The drilling condition sensing unit includes sensors for transmitting vibration intensity, pressure, rotational speed, and torque when the drill bit is in operation, and a wireless communication module for data transmission.

[0005] Preferably, the positioning component includes: The shaft shoulder is provided on the surface of the smooth rod, the sleeve abuts against the upper surface of the shaft shoulder, the thrust bearing abuts against the upper surface of the sleeve at its lower end, and the end cap abuts against the upper end of the thrust bearing. The end cap is fixedly connected to the positioning base by positioning bolts.

[0006] Preferably, the positioning component further includes; A rubber gasket is provided between the inner side of the positioning base and the optical rod; Neither the end cap nor the upper end of the thrust bearing comes into contact with the polished rod.

[0007] In this embodiment of the invention, by setting a rubber gasket at the bottom, not only is the technical problem of soil below easily entering the internal structure and causing blockage during the discharge process solved, but also the dynamic seal between the smooth rod and the positioning base is effectively achieved.

[0008] Preferably, the snap-fit ​​unit includes: The system includes a pressure rod slidably connected to a through hole on the end cap, a first connecting rod coaxially fixed to the lower end of the pressure rod, a spring elastically connecting the pressure rod to the positioning base, a second connecting rod, a third connecting rod, and a fourth connecting rod sequentially connected to the lower end of the first connecting rod, a positioning shaft fixedly mounted on the positioning base and rotatably connected to the third connecting rod, a telescopic slider rotatably connected to the tail end of the fourth connecting rod, a push spring with both ends fixedly connected to the right end of the telescopic slider and the positioning base respectively, and a snap connector fixedly connected to the extended end of the telescopic slider.

[0009] Preferably, the lower edge of the card connector is beveled, and the cross-section gradually decreases along the outward extension direction.

[0010] Preferably, the integrated steel casing submersion device includes: The bottom edge digging claw unit includes a digging claw positioning block fixedly disposed near the bottom of the auger rod, a digging claw rotatably connected to both ends of the digging claw positioning block, and an angle limiting block above both ends of the digging claw positioning block for limiting the opening angle.

[0011] Preferably, the digging claw includes: The sharp teeth are located on the bottom edge of the digging claw.

[0012] Preferably, the integrated steel casing submersion device includes: The bottom height of the auger rod is lower than the bottom elevation when the cutting claws are open.

[0013] Preferably, the elastic centering units are arranged in at least three groups at equal intervals along the optical rod in a ring.

[0014] According to a second aspect of the present invention, a method of using an integrated steel casing submersion device includes the following steps: S100: First, according to the construction requirements, place the steel casing at the pre-designed pile position; S200: Start the drilling rig, place the device above the steel casing, keep the bottom edge digging claw unit in the retracted state, control the device to move down into the steel casing until the auger drill rod is lowered to the ground, then gently lift the steel casing so that the clamping connector is inserted into the clamping groove under the action of the front push spring, completing the pre-construction preparation; S300: Controls the rotation of the auger rod. Under the action of cutting force, the bottom of the auger rod digs up the soil layer on the ground. As the height decreases, the soil layer will open up the two sides of the bottom digging claw unit and rotate with the auger rod to dig the soil layer below the steel casing wall. Since all the soil under the steel casing is dug out, the device can be lowered smoothly. S400: Once the steel casing reaches the specified depth, press the pressure rod to disengage the locking unit from the steel casing. Then, the control device lifts the casing upwards and removes a small amount of soil from inside the casing to complete the construction.

[0015] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects: 1. In this embodiment of the invention, using a spiral drill rod as a pile driving drill bit not only achieves the technical effect of excavating soil layers, but also utilizes the spirally rising paddle-shaped blade structure to automatically transport the excavated soil upwards, realizing the combination of excavation and soil drainage. This greatly saves the tedious construction steps of repeatedly lifting the drill and excavating soil, and saves labor. In addition, by setting up a drilling condition sensing unit, the original construction method, which relied solely on experience to judge the drill bit selection and working conditions, is optimized, providing workers with more intuitive and accurate data support and work guidance. 2. The integrated steel casing placement device of the present invention isolates the movement of the drill bit by using a motion isolation device, which effectively prevents the movement of the polished rod and the motion isolation component from interfering with each other. At the same time, it is connected to the steel casing by a snap-fit ​​component. Combined with the elastic centering unit, the elastic force is used to adjust the steel casing and the motion isolation device component to a state of axial alignment. Overall, the movement isolation between the steel casing and the rotating auger rod in the middle is achieved, which effectively prevents the rotation of the steel casing caused by the movement of the auger rod. While reducing the output power of the drilling rig, it also ensures that the steel casing is placed and installed in a stable and static state. 3. The integrated steel casing sinking device of the present invention, by combining elastic elements and rolling wheels, can not only meet the size requirements of steel casings within a certain range and expand the scope of application, but also effectively reduce the friction generated by the up and down movement of the two in the contact state by using rolling wheels, effectively reducing mechanical wear, and greatly improving the service life of the device by using rolling friction.

[0016] 4. The integrated steel casing sinking device of the present invention transmits the gravity of the steel casing to the positioning base through the snap-fit ​​connector, further transmits the force to the end cap through the positioning bolt, and finally transmits the downward force of the steel casing to the shaft shoulder through the top ring, rolling element, bottom ring and sleeve of the thrust bearing in sequence. In the embodiment of the present invention, by using the thrust bearing to bear the axial force, the technical effect of motion isolation between the smooth rod and the steel casing is effectively achieved.

[0017] 5. The integrated steel casing sinking device of the present invention achieves the function of manual press-to-release by adopting a linkage slider mechanism. In use, by manually pressing the pressure rod, the first linkage and the second linkage move downward in sequence. Then, under the downward pressure of the lower end of the second linkage, the third linkage rotates counterclockwise along the positioning shaft, thereby causing the right end of the third linkage to move upward. This, in turn, generates a pull-back effect on the telescopic slider through the fourth linkage, thereby disengaging the locking connector from the locking groove, effectively achieving the technical effect of press-to-release.

[0018] 6. The integrated steel casing sinking device of the present invention, by designing a self-opening grab at the bottom of the auger rod, not only solves the technical problem of excavating the soil layer at the bottom of the steel casing, but also achieves the effect of easy installation. When the soil layer is dug up by the auger rod at the center, the soil layer will automatically push the grab to both sides, thereby effectively solving the technical problem of installation difficulties caused by the grab opening diameter being larger than the inner wall of the steel casing. In addition, by setting the bottom of the auger rod to be lower than the bottom elevation when the grab is open, the plane where the grab is located is first destroyed by the auger rod during construction. This greatly reduces the force on the grab on both sides, while realizing the technical effect of bringing the soil layer closer to the center and transporting the soil from the bottom to the top through the paddle-shaped blades. In addition, the sharp teeth at the bottom of the grab increase the destructive force of the grab on the soil layer. Attached Figure Description

[0019] Figure 1 This is a first construction state diagram of an integrated steel casing sinking device according to an embodiment of the present invention; Figure 2 This is a second construction state diagram of an integrated steel casing sinking device according to an embodiment of the present invention; Figure 3 This is a top view of the second construction state of an integrated steel casing sinking device according to an embodiment of the present invention; Figure 4 A partial enlarged view A is provided for an integrated steel casing sinking device according to an embodiment of the present invention; Figure 5 This is a partially enlarged structural schematic diagram of an integrated steel casing sinking device according to an embodiment of the present invention; Figure 6 This is a partial enlarged view (C) of an embodiment of the present invention: an integrated steel casing sinking device. Figure 7 This is a partial enlarged view (B) of an embodiment of the present invention: an integrated steel casing sinking device. Figure 8 This is a flowchart illustrating the usage method of an integrated steel casing submersion device according to an embodiment of the present invention.

[0020] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-steel casing, 2-auger drill rod, 200-polished rod, 3-bottom edge digging claw unit, 301-digging claw positioning block, 302-angle limiting block, 303-rotating shaft, 304-digging claw, 305-pointed tooth, 4-drill pipe clamping unit, 401-pressure rod, 402-spring, 403-first connecting rod, 404-second connecting rod, 405-third connecting rod, 406-positioning rotating shaft, 407-fourth connecting rod, 408-telescopic slider, 409-clamping joint, 410-clamping groove, 411-push spring, 5-elastic pair 501-Abutting wheel, 502-Rotating shaft, 503-Rotating connecting block, 504-Centering spring, 505-Sliding telescopic rod, 506-Limiting stop, 6-Positioning component, 601-Shoulder, 602-Thrust bearing, 603-Sleeve, 604-End cover, 605-Positioning bolt, 610-Positioning base, 611-Centering component slide groove, 612-Tail limiting groove, 613-First snap-fit ​​component slide groove, 614-Connecting rod movement chamber, 615-Second snap-fit ​​component slide groove, 616-Isolation chamber, 617-Contact end face, 620-Rubber washer, 7-Coupling, 8-Ground. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0022] like Figures 1-7 As shown in the embodiment of the present invention, the integrated steel casing submersion device includes: A spiral drill rod 2 has a polished rod 200 fixedly connected to its upper part. The upper end of the polished rod 200 is coaxially fixedly connected to the output end of the drilling rig through a coupling 7. The outer wall of the spiral drill rod 2 is provided with continuously rotating and rising paddle-shaped blades. The motion isolation unit includes a positioning component 6 for isolating the rotation state of the spiral drill rod 2 and positioning the steel casing 1. The positioning component 6 includes a positioning base 610, a snap-fit ​​groove 410 provided on the wall of the steel casing 1, and a snap-fit ​​unit 4 that snaps into the snap-fit ​​groove 410 and is provided with a sliding telescopic controllable snap-fit ​​connector. The elastic centering unit 5 is in contact with the inner wall of the steel casing 1. The elastic centering unit 5 includes an abutting wheel 501, a rotating connecting block 503 rotatably connected to the abutting wheel 501, a sliding telescopic rod 505 coaxially fixed at the right end of the rotating connecting block 503, a centering spring 504 sleeved on the outer wall of the sliding telescopic rod 505, and a tail limiting groove 612 for limiting and preventing slippage. The abutting wheel 501 is slidably connected to the centering component sliding groove 611 set inside the positioning base 610. The drilling condition sensing unit is fixedly installed at the rotation junction of the positioning component 6 and the drill rod. The drilling condition sensing unit includes sensors for transmitting vibration intensity, pressure, rotation speed and torque when the drill bit is working, and a wireless communication module for data transmission.

[0023] In this embodiment of the invention, using a spiral drill rod as a pile driving drill bit not only achieves the technical effect of excavating soil layers, but also allows for the automatic upward transport of excavated soil using a spirally rising paddle-shaped blade structure. This combines excavation with soil drainage, greatly saving the tedious construction steps of repeatedly lifting and digging, and conserving labor. Furthermore, by setting up a drilling condition sensing unit, the original construction method, which relied solely on experience to determine drill bit selection and working conditions, is optimized, providing workers with more intuitive and accurate data support and work guidance.

[0024] Furthermore, by employing a motion isolation device to isolate the movement of the drill bit, the movement of the polished rod 200 and the motion isolation component is effectively prevented from interfering with each other. At the same time, it is also engaged with the steel casing 1 through a snap-fit ​​component. Combined with the elastic centering unit 5, the elastic force is used to adjust the steel casing and the motion isolation device component to a state of axial alignment. Overall, the motion isolation between the steel casing 1 and the rotating auger rod in the middle is achieved, effectively preventing the rotation of the steel casing 1 caused by the movement of the auger rod. While reducing the output power of the drilling rig, it also ensures that the steel casing is installed in a stable and static state.

[0025] like Figure 6 As shown, the working principle of the elastic centering unit 5 is as follows: The device is placed inside the steel casing 1 and controlled to move downwards until the abutment wheel 501 contacts the inner wall of the steel casing 1. Then, the device is controlled to continue moving downwards. At this time, due to size limitations, the inner wall of the steel casing will indirectly apply a rightward squeezing force to the rotating connecting block 503 through the abutment wheel 501, thereby compressing the centering spring 504. At the same time, the spring will apply an equal and opposite force to the steel casing 1 through the rotating connecting block 503 and the abutment wheel 501. Therefore, under the combined action of the elastic centering units 5 set in multiple directions, since the selected spring elastic coefficients are the same, the technical effect of the central axis of the device and the steel casing 1 being aligned is achieved.

[0026] like Figure 1 and Figure 5 As shown, in this embodiment of the invention, the positioning component 6 includes: A shoulder 601 is provided on the surface of the guide rod 200, a sleeve 603 abuts against the upper surface of the shoulder 601, a thrust bearing 602 whose lower end face abuts against the upper surface of the sleeve 603, and an end cap 604 abuts against the upper end face of the thrust bearing 602. The end cap 604 is fixedly connected to the positioning base 610 by positioning bolts 605.

[0027] In this embodiment of the invention, by combining the elastic element with the rolling wheel, not only can the size requirements of the steel casing be met within a certain range, thus expanding the scope of application, but the use of the rolling wheel can also effectively reduce the friction generated by the up-and-down movement of the two in the contact state, effectively reducing mechanical wear. The use of rolling friction greatly improves the service life of the device.

[0028] like Figure 5 and Figure 7 As shown, the working principle of this embodiment is as follows: Under the gravity of the steel casing 1, the downward force is transmitted to the positioning base 610 through the snap-fit ​​connector 409, and further transmitted to the end cover 604 through the positioning bolt 605. Finally, the downward force of the steel casing is transmitted to the shoulder 601 through the top ring, rolling element, bottom ring and sleeve 603 of the thrust bearing 602 in sequence. In this embodiment of the invention, by using the thrust bearing to bear the axial force, the technical effect of motion isolation between the smooth rod 200 and the steel casing 1 is effectively achieved.

[0029] like Figure 1 and Figure 5 As shown, in this embodiment of the invention, the positioning component 6 includes: A rubber gasket 620 is provided between the inner side of the positioning base 610 and the light rod 200; The upper ends of the end cap 604 and the thrust bearing 602 do not contact the polished rod 200.

[0030] In this embodiment of the invention, by setting a rubber gasket 620 at the bottom, not only is the technical problem of soil below easily entering the internal structure and causing blockage during the discharge process solved, but also the dynamic seal between the smooth rod and the positioning base 610 is effectively achieved.

[0031] like Figure 1 and Figure 7 As shown, in this embodiment of the invention, the snap-fit ​​unit 4 includes: The system includes a pressure rod 401 slidably connected to a through hole on the end cap 604, a first connecting rod 403 coaxially fixedly connected to the lower end of the pressure rod 401, a spring 402 elastically connecting the pressure rod 401 to the positioning base 610, a second connecting rod 404, a third connecting rod 405, and a fourth connecting rod 407 sequentially connected to the lower end of the first connecting rod 403, a positioning shaft 406 fixedly mounted on the positioning base 610 and rotatably connected to the third connecting rod 405, a telescopic slider 408 rotatably connected to the tail end of the fourth connecting rod 407, a push spring 411 fixedly connected at both ends to the right end of the telescopic slider 408 and the positioning base 610 respectively, and a snap connector 409 fixedly connected to the extended end of the telescopic slider 408.

[0032] like Figure 1 and Figure 7 As shown, in this embodiment of the invention, the lower edge of the card connector 409 is beveled, and the cross-section continuously decreases along the outward extension direction.

[0033] In this embodiment of the invention, a linkage slider mechanism is used to achieve the function of manual press-to-release. In use, by manually pressing the pressure rod 401, the first linkage 403 and the second linkage 404 are driven to move downward in sequence. Then, under the downward pressure of the lower end of the second linkage 404, the third linkage 405 rotates counterclockwise along the positioning shaft 406, thereby causing the right end of the third linkage 405 to move upward. This causes the fourth linkage 407 to pull back the telescopic slider 408, thereby disengaging the snap-fit ​​connector 409 from the snap-fit ​​groove 410, effectively achieving the technical effect of press-to-release.

[0034] like Figure 1 and Figure 4 As shown in the embodiment of the present invention, the integrated steel casing submersion device includes: The bottom edge digging claw unit 3 includes a digging claw positioning block 301 fixedly disposed near the bottom of the spiral drill rod 2, a digging claw 304 rotatably connected to both ends of the digging claw positioning block 301, and an angle limiting block 302 above both ends of the digging claw positioning block 301 for limiting the opening angle.

[0035] like Figure 1 and Figure 4 As shown, in this embodiment of the invention, the digging claw 304 includes: The sharp teeth 305 are located on the bottom edge of the digging claw 304.

[0036] like Figure 2 As shown in the embodiment of the present invention, the integrated steel casing submersion device includes: The bottom of the auger rod 2 is lower than the bottom elevation when the digging claw 304 is open.

[0037] In this embodiment of the invention, by designing a self-opening grab at the bottom of the auger rod, not only is the technical problem of removing the soil layer at the bottom of the steel casing 1 solved, but also the effect of easy installation is achieved. When the soil layer is dug up by the auger rod at the center, the soil layer will automatically push the grab to both sides, thereby effectively solving the technical problem of installation difficulties caused by the grab opening diameter being larger than the inner wall of the steel casing 1. In addition, by setting the bottom of the auger rod 2 to be lower than the bottom elevation of the grab 304 when it is open, the plane where the grab 304 is located is first destroyed by the auger rod 2 during construction. This greatly reduces the force on the grabs on both sides, while realizing the technical effect of bringing the soil layer closer to the center and transporting the soil from the bottom to the top through the paddle blades. Furthermore, the sharp teeth 305 at the bottom of the grab increase the destructive force of the grab on the soil layer.

[0038] like Figure 3 and Figure 6 As shown, in this embodiment of the invention, the elastic centering unit is arranged in at least three sets in a circular equidistant array along the optical rod 200.

[0039] like Figure 1 and Figure 8 As shown in the embodiment of the present invention, the method of using the integrated steel casing sinking device includes the following steps: S100: First, according to the construction requirements, place the steel casing 1 at the pre-designed pile position; S200: Start the drilling rig, place the device above the steel casing 1, keep the bottom edge digging claw unit 3 in the retracted state, control the device to move down into the steel casing 1 until the auger drill rod is lowered to the ground, then gently lift the steel casing 1 so that the clamping connector 409 is inserted into the clamping groove 410 under the action of the front push spring 411, and complete the pre-construction preparation. S300: Controls the rotation of the auger rod. At this time, under the action of cutting force, the bottom of the auger rod digs up the soil layer on the ground. As the height decreases, the soil layer will open up the two sides of the bottom edge digging claw unit 3 and rotate with the auger rod to dig the soil layer below the steel casing wall. Since all the soil under the steel casing is dug out, the device can be lowered smoothly directly. S400: Once the steel casing reaches the specified depth, press the pressure rod 401 to disengage the locking unit from the steel casing. Then, lift the control device upwards and remove a small amount of soil from inside the steel casing to complete the construction.

[0040] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An integrated steel casing submersion device, characterized in that, include: A spiral drill rod (2) is fixedly connected to a polished rod (200) on its upper part. The upper end of the polished rod (200) is coaxially fixedly connected to the output end of the drill rig through a coupling (7). The outer wall of the spiral drill rod (2) is provided with continuously rotating and rising paddle blades. The motion isolation unit includes a positioning assembly (6) for isolating the rotation state of the auger rod (2) and positioning the steel casing (1). The positioning assembly (6) includes a positioning base (610), a shoulder (601) disposed on the surface of the polished rod (200), a sleeve (603) abutting against the upper surface of the shoulder (601), a thrust bearing (602) whose lower end face abuts against the upper surface of the sleeve (603), and an end cap (604) abutting against the upper end face of the thrust bearing (602). The end cap (604) is fixedly connected to the positioning base (610) by positioning bolts (605). A snap-fit ​​groove (410) is provided on the wall of the steel casing (1), and a snap-fit ​​unit (4) is snapped into the snap-fit ​​groove (410) and provided with a sliding telescopic controllable snap-fit ​​connector. The elastic centering unit (5) is in contact with the inner wall of the steel casing (1). The elastic centering unit (5) includes an abutting wheel (501), a rotating connecting block (503) rotatably connected to the abutting wheel (501), a sliding telescopic rod (505) coaxially fixed at the right end of the rotating connecting block (503), a centering spring (504) sleeved on the outer wall of the sliding telescopic rod (505), and a tail limiting groove (612) for limiting and preventing slippage. The abutting wheel (501) is slidably connected to the centering component slide groove (611) set inside the positioning base (610). The drilling condition sensing unit is fixedly installed at the rotation junction of the positioning component (6) and the auger drill rod. The drilling condition sensing unit includes sensors for collecting vibration intensity, pressure, rotation speed and torque when the drill bit is working and a wireless communication module for data transmission.

2. The integrated steel casing submersion device according to claim 1, characterized in that, The positioning component (6) further includes; A rubber gasket (620) is provided between the inner side of the positioning base (610) and the light rod (200). The upper ends of the end cap (604) and the thrust bearing (602) do not contact the polished rod (200).

3. The integrated steel casing submersion device according to claim 2, characterized in that, The aforementioned snap-fit ​​unit (4) includes: The pressure rod (401) is slidably connected to the through hole on the end cap (604), the first connecting rod (403) is coaxially fixedly connected to the lower end of the pressure rod (401), the spring (402) elastically connects the pressure rod (401) to the positioning base (610), the second connecting rod (404), the third connecting rod (405) and the fourth connecting rod (407) are sequentially connected to the lower end of the first connecting rod (403), the positioning shaft (406) is fixedly set on the positioning base (610) and rotatably connected to the third connecting rod (405), the telescopic slider (408) is rotatably connected to the tail end of the fourth connecting rod (407), the push spring (411) is fixedly connected at both ends to the right end of the telescopic slider (408) and the positioning base (610) respectively, and the snap connector (409) is fixedly connected to the extended end of the telescopic slider (408).

4. The integrated steel casing submersion device according to claim 3, characterized in that, The lower edge of the clamp connector (409) is beveled, and the cross-section decreases continuously along the outward extension direction.

5. The integrated steel casing submersion device according to claim 4, characterized in that, The integrated steel casing submersion device includes: The bottom edge digging claw unit (3) includes a digging claw positioning block (301) fixedly disposed near the bottom of the auger rod (2), a digging claw (304) rotatably connected to both ends of the digging claw positioning block (301), and an angle limiting block (302) above both ends of the digging claw positioning block (301) for limiting the opening angle.

6. The integrated steel casing submersion device according to claim 5, characterized in that, The aforementioned claw (304) includes: The sharp teeth (305) are located on the bottom edge of the digging claw (304).

7. The integrated steel casing submersion device according to claim 6, characterized in that, The integrated steel casing submersion device includes: The bottom height of the auger rod (2) is lower than the bottom elevation of the digging claw (304) when it is open.

8. An integrated steel casing submersion device according to any one of claims 6 or 7, characterized in that: The elastic centering unit is arranged in at least three sets in a ring at equal intervals along the optical rod (200).

9. The method of using the integrated steel casing sinking device according to claim 8, characterized in that, Includes the following steps: S100: First, according to the construction requirements, place the steel casing (1) at the pre-designed pile position; S200: Start the drilling rig, place the device above the steel casing (1), keep the bottom edge digging claw unit (3) in the retracted state, control the device to be lowered into the steel casing (1) until the spiral drill rod is lowered to the ground, then gently lift the steel casing (1) so that the clamping joint (409) is inserted into the clamping groove (410) under the action of the front push spring (411) to complete the preparation before construction; S300: Control the rotation of the auger rod. At this time, under the action of the cutting force, the bottom of the auger rod will dig up the soil layer on the ground. As the height continues to decrease, the soil layer will open the two sides of the bottom edge digging claw unit (3) and rotate with the auger rod to dig the soil layer below the steel casing wall. Since the soil below the steel casing is completely dug out, the direct control device will descend smoothly. S400: When the steel casing reaches the specified depth, press the pressure bar (401) to disengage the locking unit from the steel casing. Then, the control device lifts the casing upward and removes a small amount of soil from inside the steel casing to complete the construction.

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