A bored pile drilling device and construction technology for a pumping station

Abstract

The present invention relates to the technical field of cast-in-place pile construction, and specifically to a cast-in-place pile drilling device and construction process for a pumping station, including a drilling mechanism, a mud recovery mechanism, a support mechanism, and a filling and pressing mechanism. In the present invention, when the sliding plate descends, it drives the one-way rotating plate one to descend together. The one-way rotating plate one can scrape and push the clay between the sliding plate and the soil discharge shell to the lower part of the drill cylinder. When the clay is discharged to the bottom of the hole, it will discharge the external air into the space between the drill bit and the bottom of the hole together. Therefore, the negative pressure intensity can be reduced, and further shrinkage of the hole wall can be avoided. When the sliding plate continues to press down, the clay can be compacted layer by layer through the compaction plate. When the sliding plate rises, it is blocked by the one-way rotating plate two, so that the soil can be prevented from backfilling into the soil discharge shell. Therefore, the collapsed hole wall can be backfilled and tamped with clay in the first time to prevent the increase of the collapse area. The filling and pressing mechanism can be used for emergency treatment when the hole wall collapses and the hole wall shrinks, ensuring that the drilling construction can be resumed as soon as possible subsequently.

Description

Technical Field

[0001] The present invention relates to the technical field of cast-in-place pile construction, and specifically to a cast-in-place pile drilling device and construction technology for a pumping station. Background Art

[0002] A cast-in-place pile is a pile formed by forming a hole in place and pouring concrete or reinforced concrete. In the construction of high-rise buildings, substations, or bridges, etc., cast-in-place piles are usually required. In the construction of cast-in-place piles, the construction technology of slurry-supported impact bored cast-in-place piles is a commonly used cast-in-place pile construction technology at present. The construction technology of slurry-supported impact bored cast-in-place piles relies on the impact kinetic energy generated by the self-weight of a heavy hammer to impact the soil layer or break the rock layer to form a pile hole, and then uses a slag bucket to discharge the drill cuttings. And the structure of the cast-in-place pile will directly affect the bearing capacity and seismic resistance of the concrete structure.

[0003] In soft soil layers underground, if the downward flow rate of water in the drill hole is too fast, or the drilling speed is too fast, it may cause the air in the hole to be quickly discharged, which may form a negative pressure. The negative pressure will increase the effective stress of the soil on the hole wall, which may cause the hole wall to collapse or the hole wall to shrink in diameter. When the hole wall shrinks in diameter or collapses, generally, it is necessary to immediately stop drilling, and then backfill clay, crushed stones, etc. into the drill hole. When backfilling, layer-by-layer compaction is carried out to prevent further collapse. However, before backfilling, it is necessary to extract the drill pipe from the drill hole, and it is difficult to carry out clay backfilling in the first time. When the drill pipe is extracted from the drill hole, it may also cause an increase in negative pressure, thereby further expanding the range of hole wall collapse or shrinkage in diameter. The existing cast-in-place pile drilling devices lack the function of emergency treatment for the hole wall collapse caused by negative pressure. Summary of the Invention

[0004] The purpose of the present invention is to provide a cast-in-place pile drilling device and construction technology for a pumping station to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A cast-in-place pile drilling device for a pumping station, comprising:

[0007] A drilling mechanism, the drilling mechanism includes a rotating cylinder, the bottom of the rotating cylinder is fixedly connected with a drill pipe, and the bottom of the drill pipe is fixedly connected with a drill bit;

[0008] A slurry recovery mechanism, arranged on one side of the drilling mechanism;

[0009] A support mechanism, rotatably arranged outside the rotating cylinder;

[0010] The filling and pressing mechanism is fixedly arranged inside the drill cylinder. The filling and pressing mechanism includes a driving cylinder. A rotating ring is fixedly connected to the bottom of the driving cylinder. Two helical tooth columns are symmetrically arranged on the outer wall of the rotating ring. A rotating cylinder is sleeved outside the rotating ring. A plurality of teeth meshing and clamping with the helical tooth columns are fixedly connected to the inner wall of the rotating cylinder at equal intervals in a circular shape. A positioning ring is rotatably sleeved outside the rotating cylinder. The positioning ring is fixedly connected to the inside of the drill cylinder. A reciprocating spiral groove is formed on the outer wall of the rotating cylinder. A lifting ring slidingly sleeved outside the rotating cylinder is slidably embedded and connected with the reciprocating spiral groove. One ends of five connecting arms are fixedly connected to the top of the lifting ring in an equidistant circular shape. The other ends of the five connecting arms are all fixedly connected with sliding plates. A one-way rotating plate one is arranged on the inner wall of the sliding plate.

[0011] Furthermore, the drilling mechanism includes:

[0012] A driving motor one is arranged at the top end of the rotating cylinder;

[0013] A straight gear one is fixedly connected to the output end of the driving motor one;

[0014] A gear ring one is fixedly sleeved outside the rotating cylinder and meshed with the straight gear one;

[0015] An auger one is rotatably sleeved inside the drill cylinder;

[0016] A bevel gear set is fixedly connected to the top end of the central axis of the auger one;

[0017] A driving motor two has its output end fixedly connected to the bevel gear set.

[0018] Furthermore, the drilling mechanism includes:

[0019] A fixed cylinder is fixedly connected to the central position inside the drill cylinder. The fixed cylinder is rotatably sleeved with the rotating ring;

[0020] An auger two is rotatably sleeved inside the fixed cylinder;

[0021] A connecting shaft is fixedly connected to the central position inside the driving cylinder. The bottom end of the connecting shaft is fixedly connected to the central axis of the auger two, and the top end of the connecting shaft is fixedly connected to the central axis of the auger one.

[0022] Furthermore, the mud recovery mechanism includes:

[0023] A gear ring two is fixedly sleeved outside the rotating cylinder;

[0024] A straight gear two is meshed with the gear ring two;

[0025] A reciprocating lead screw is fixedly sleeved at the central position of the straight gear two;

[0026] The cavity ring is sleeved on the outside of the reciprocating lead screw, and the cavity ring is slidably sleeved on the outside of the rotating cylinder;

[0027] There are five spray heads, which are fixedly connected to the outside of the cavity ring at equal distances in a ring shape, and the spray heads are communicated with the inside of the cavity ring;

[0028] The driving block is fixedly connected to the inner wall of the cavity ring, and the driving block is slidably embedded and connected with the reciprocating lead screw.

[0029] Furthermore, the mud recovery mechanism includes:

[0030] The soil shell is rotatably sleeved on the top of the rotating cylinder;

[0031] One end of the first hose is fixedly connected to the side wall of the soil shell, and the first hose is communicated with the inside of the soil shell;

[0032] The sand and gravel pump is fixedly connected to the other end of the first hose, and the other end of the sand and gravel pump is fixedly connected with a bent pipe;

[0033] The filtration tank is fixedly connected to the bottom of the sand and gravel pump;

[0034] The partition is fixedly connected to the inner wall of the filtration tank;

[0035] There are eight filter blocks, which are fixedly connected to the partition at equal distances.

[0036] Furthermore, the mud recovery mechanism includes:

[0037] The feeding pipe is fixedly connected to the side wall of the filtration tank, and the feeding pipe is communicated with the inside of the filtration tank;

[0038] The pressure pump is fixedly connected to the side wall of the filtration tank;

[0039] One end of the second hose is fixedly connected to the output end of the pressure pump, and the other end is fixedly connected to the top of the cavity ring.

[0040] Furthermore, the support mechanism includes:

[0041] The support frame is used to keep the drilling mechanism perpendicular to the ground;

[0042] One end of the hydraulic cylinder is fixedly connected to the top of the support frame;

[0043] The telescopic column is fixedly connected to the top of the hydraulic cylinder, and the second driving motor is fixedly connected to the side wall of the telescopic column;

[0044] The lifting plate is fixedly connected to the bottom end of the telescopic column, and the lifting plate is rotatably sleeved on the rotating cylinder;

[0045] The socket seat is fixedly connected to the bottom end of the hydraulic cylinder, and the socket seat is rotatably sleeved on the rotating cylinder.

[0046] Furthermore, at both ends of the two helical columns, torsion springs I are fixedly connected to the connection parts with the rotating ring.

[0047] Furthermore, the filling mechanism includes:

[0048] A positioning seat, fixedly connected to the inner wall of the sliding plate, rotatably connected to the one-way rotating plate I, and a torsion spring II is fixedly connected to the connection part between the one-way rotating plate I and the positioning seat;

[0049] A stop bar, fixedly connected to the inner wall of the sliding plate, and abuts against the top of the one-way rotating plate I;

[0050] Five soil discharge shells are arranged and fixedly connected to the inside of the drill cylinder at equal intervals in a ring shape, and the sliding plate is slidably connected to the soil discharge shell;

[0051] A one-way rotating plate II is rotatably connected to the inner wall of the soil discharge shell, and a torsion spring III is fixedly arranged at the connection part between the one-way rotating plate II and the soil discharge shell. A stop bar II that abuts against the one-way rotating plate II is arranged at the top of the one-way rotating plate II;

[0052] Five compaction plates are arranged and are all fixedly connected to the bottom end of the sliding plate.

[0053] A construction process of a bored pile drilling device for a pumping station specifically includes the following steps:

[0054] Step 1: Measuring and lofting, calibrating the drilling position, then burying the casing, moving the drilling device to the construction position and strengthening the position. The hydraulic cylinder extends to drive the socket seat and the rotating cylinder to descend, so that the drill bit continuously drills into deeper soil;

[0055] Step 2: First, use the auger II to lift the stone chips and mud generated during the drilling process to the fixed cylinder through the spiral blades, then transport them to the rotating cylinder through the driving cylinder, and then gradually lift them to the soil shell through the auger I, so that the drilling mechanism can timely discharge the stone chips and mud from the bottom of the hole to the outside during the drilling process to complete the cleaning of the drilling slag;

[0056] Step 3: The sand pump and the hose I can pump out the mud and stone chips in the soil shell, and then discharge the mud and stone chips into the filter pool through the elbow. The filter blocks on the partition plate in the filter pool can filter the excavated mixture of stone chips and mud;

[0057] Step 4: The rotating cylinder drives the gear ring II and the straight gear II to mesh and rotate, which can drive the cavity ring to slide reciprocally along the rotating cylinder in the vertical direction. During the sliding process, mud is sprayed onto the hole wall through multiple nozzles on the outer wall of the cavity ring, so that a layer of clay mud will be formed on the surface of the hole wall;

[0058] Step 5: The second driving motor, the bevel gear set and the auger 1 rotate counterclockwise, so as to facilitate the transportation of clay and stone flakes in the soil shell to the bottom end of the rotating cylinder, and then transport the clay to the inside of the five soil discharge shells respectively;

[0059] Step 6: The lifting ring will reciprocate along the rotating drum. After the clay is squeezed into the soil discharge shell, it will flow to the one-way rotating plate. When the sliding plate descends, it will drive the one-way rotating plate to descend together. The one-way rotating plate can be used to scrape the clay between the sliding plate and the soil discharge shell to the bottom of the drill barrel. The sliding plate continues to press down to compact the clay layer by layer through the compaction plate.

[0060] Compared with the prior art, the present invention has the following beneficial effects:

[0061] 1. During the drilling process, the slag and mud generated during the drilling process are first lifted into the fixed cylinder by the spiral blades of the auger 2, and then transported to the rotating cylinder through the driving cylinder, and then gradually lifted into the soil shell through the auger 1. Therefore, the drilling mechanism can discharge the slag and mud from the bottom of the hole to the outside in time during the drilling process, thereby avoiding the blockage of the drill bit and affecting the construction progress, ensuring the cleanliness of the bottom of the hole and improving the pile quality of the bored pile. The drilling mechanism can perform one-time drilling construction without the need to use the slag removal cylinder to remove the slag at the bottom of the hole and discharge it to the outside at regular intervals, thereby improving the construction efficiency of the drilling.

[0062] 2. The gravel pump and hose 1 in the mud recovery mechanism can extract the mud and slag from the soil shell, and then discharge the mud and slag into the filter tank through the bent pipe. The filter block on the partition in the filter tank can filter the excavated slag and mud mixture. The mud produced after filtration can flow under the partition. The construction personnel can add sand and other particles to the feeding pipe according to the filtered mud, so as to facilitate the preparation of different types of mud according to different soil layers. Then, the high-quality mud is pressurized and transported to the cavity ring through the pressure pump and hose 2. Since the rotating cylinder will drive the gear ring 2 and the spur gear 2 to mesh and rotate, it will drive the reciprocating screw to rotate, and the cavity ring The driving block on the inner wall and the reciprocating screw are slidably embedded in the connection, so that the cavity ring can be driven to slide back and forth in the vertical direction along the rotating cylinder, and during the sliding process, mud is sprayed onto the hole wall through multiple nozzles on the outer wall of the cavity ring, so that a layer of mud is formed on the surface of the hole wall, thereby protecting the hole wall from collapse. The mud generates a large hydrostatic pressure in the hole, which can also effectively prevent the hole wall from collapsing. The sprayed mud can also cool the drill bit and drill barrel, thereby increasing the service life of the drilling tool. By providing a mud recovery mechanism, the underground mud can be recovered and utilized, thereby improving the utilization efficiency of natural resources and saving material costs.

[0063] 3. The clay in the filtration tank is pumped into the soil shell through a sand and gravel pump, or clay or rubble is directly added into the soil shell. Then, the second driving motor, the bevel gear set, and the first auger rotate counterclockwise, facilitating the conveyance of the clay and rubble in the soil shell to the bottom end of the rotating cylinder. Subsequently, the clay is respectively conveyed into the interiors of five soil discharge shells. Meanwhile, the connecting shaft drives the driving cylinder to rotate, and the driving cylinder drives the rotating ring and the two helical teeth on the outer wall to rotate counterclockwise simultaneously. As a result, the two helical teeth remain engaged with the teeth on the inner wall of the rotating cylinder, enabling the synchronous rotation of the rotating cylinder. This drives the lifting ring to reciprocate up and down along the rotating cylinder. The five connecting arms simultaneously drive the five sliding plates to slide downward. After the clay is extruded into the soil discharge shell, it flows under the first one-way rotating plate. When the sliding plate descends, it drives the first one-way rotating plate to descend together. Under the action of the stop bar, the upward rotation of the first one-way rotating plate can be blocked. The first one-way rotating plate can scrape and push the clay between the sliding plate and the soil discharge shell below the drill cylinder. When the clay is discharged to the bottom of the hole, it discharges the outside air into the space between the drill bit and the bottom of the hole, thereby reducing the negative pressure intensity and preventing further shrinkage of the hole wall. When the sliding plate continues to press down, the clay can be compacted layer by layer through the compaction plate. When the sliding plate rises, it is blocked by the second one-way rotating plate, preventing the soil from backfilling into the soil discharge shell. Therefore, the collapsed hole wall can be backfilled and tamped with clay in a timely manner, preventing the increase of the collapsed area. The filling and pressing mechanism can be used for emergency treatment when the hole wall collapses and the hole wall shrinks, ensuring the subsequent resumption of drilling construction as soon as possible. Description of the Drawings

[0064] Figure 1 is a schematic structural diagram of the overall usage state of the present invention;

[0065] Figure 2 is a schematic structural diagram of the overall structure of the present invention;

[0066] Figure 3 is a schematic structural diagram of the drilling mechanism of the present invention;

[0067] Figure 4 is a schematic structural diagram of the mud recovery mechanism of the present invention;

[0068] Figure 5 is a schematic sectional view of the filtration tank of the present invention;

[0069] Figure 6 is a schematic sectional view of the cavity ring of the present invention;

[0070] Figure 7 is a schematic sectional view of the drill cylinder of the present invention;

[0071] Figure 8 is a schematic diagram of the bottom structure of the drill bit of the present invention;

[0072] Figure 9It is a schematic structural diagram of the compaction mechanism in the present invention;

[0073] Figure 10 It is a schematic structural diagram of the connection structure of the rotating cylinder in the present invention;

[0074] Figure 11 It is a schematic structural diagram of the connection structure of the rotating ring in the present invention;

[0075] Figure 12 It is a schematic structural diagram of the inner wall structure of the rotating cylinder in the present invention;

[0076] Figure 13 It is a schematic structural diagram of the connection structure of the soil discharge shell in the present invention;

[0077] Figure 14 It is a schematic structural diagram of the inner wall structure of the sliding plate in the present invention;

[0078] Figure 15 It is a schematic structural diagram of the internal structure of the soil discharge shell in the present invention.

[0079] In the figure: 100, drilling mechanism; 101, driving motor 1; 102, spur gear 1; 103, gear ring 1; 104, rotating cylinder; 105, drill cylinder; 106, drill bit; 107, auger 1; 108, bevel gear set; 109, driving motor 2; 110, fixed cylinder; 111, auger 2; 112, connecting shaft; 200, mud recovery mechanism; 201, gear ring 2; 202, spur gear 2; 203, reciprocating lead screw; 204, cavity ring; 205, nozzle; 206, driving block; 207, soil shell; 208, hose 1; 209, sand pump; 210, filter tank; 211, partition board; 212, filter block; 213, feeding pipe; 214, pressure pump; 215, hose 2; 300, support mechanism; 301, support frame; 302, hydraulic cylinder; 303, telescopic column; 304, lifting plate; 305, socket seat; 400, compaction mechanism; 401, driving cylinder; 402, rotating ring; 403, helical tooth column; 404, torsion spring 1; 405, rotating cylinder; 406, locking tooth; 407, positioning ring; 408, reciprocating spiral groove; 409, lifting ring; 410, connecting arm; 411, sliding plate; 412, positioning seat; 413, one-way rotating plate 1; 414, retaining bar; 415, soil discharge shell; 416, one-way rotating plate 2; 417, compaction plate. Specific embodiments

[0080] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0081] Please refer to Figures 1 to 15 In an embodiment of the present invention, a bored pile drilling device for a pumping station includes: a drilling mechanism 100. The drilling mechanism 100 includes a rotating cylinder 104. A drill cylinder 105 is fixedly connected to the bottom of the rotating cylinder 104. A drill bit 106 is fixedly connected to the bottom of the drill cylinder 105; a mud recovery mechanism 200 is arranged on one side of the drilling mechanism 100; a support mechanism 300 is rotatably arranged outside the rotating cylinder 104; a filling and pressing mechanism 400 is fixedly arranged inside the drill cylinder 105. The filling and pressing mechanism 400 includes a driving cylinder 401. A rotating ring 402 is fixedly connected to the bottom of the driving cylinder 401. Two helical tooth columns 403 are symmetrically arranged on the outer wall of the rotating ring 402. A rotating cylinder 405 is sleeved outside the rotating ring 402. A plurality of teeth 406 meshing and clamping with the helical tooth columns 403 are fixedly connected to the inner wall of the rotating cylinder 405 at equal intervals in a ring shape. A positioning ring 407 is rotatably sleeved outside the rotating cylinder 405. The positioning ring 407 is fixedly connected to the inside of the drill cylinder 105. A reciprocating spiral groove 408 is formed on the outer wall of the rotating cylinder 405. A lifting ring 409 which is slidably embedded and connected with the reciprocating spiral groove 408 is slidably sleeved outside the rotating cylinder 405. One ends of five connecting arms 410 are fixedly connected to the top of the lifting ring 409 at equal intervals in a ring shape. The other ends of the five connecting arms 410 are all fixedly connected with a sliding plate 411. A one-way rotating plate one 413 is arranged on the inner wall of the sliding plate 411. The drilling mechanism 100 includes: a driving motor one 101 is arranged at the top end of the rotating cylinder 104; a spur gear one 102 is fixedly connected to the output end of the driving motor one 101; a tooth ring one 103 is fixedly sleeved outside the rotating cylinder 104 and is meshed and connected with the spur gear one 102; an auger one 107 is rotatably sleeved inside the drill cylinder 105; a bevel gear set 108 is fixedly connected to the top end of the central axis of the auger one 107; the output end of a driving motor two 109 is fixedly connected to the bevel gear set 108. The drilling mechanism 100 includes: a fixed cylinder 110 is fixedly connected to the central position inside the drill cylinder 105. The fixed cylinder 110 is rotatably sleeved with the rotating ring 402; an auger two 111 is rotatably sleeved inside the fixed cylinder 110; a connecting shaft 112 is fixedly connected to the central position inside the driving cylinder 401. The bottom end of the connecting shaft 112 is fixedly connected to the central axis of the auger two 111. The top end of the connecting shaft 112 is fixedly connected to the central axis of the auger one 107.

[0082] Specifically, the output end of the driving motor 101 in the drilling mechanism 100 drives the first spur gear 102 to rotate, and then can drive the first toothed ring 103 and the rotating cylinder 104 to rotate. The rotating cylinder 104 drives the drill cylinder 105 and the drill bit 106 at the bottom to rotate. At the same time, the hydraulic cylinder 302 extends to drive the socket 305 and the rotating cylinder 104 to descend, so that the drill bit 106 continuously drills deeper into the soil. At the same time, the output end of the second driving motor 109 drives the bevel gear set 108 to rotate, so as to drive the central axis of the first auger 107 to rotate. Since the first auger 107 and the second auger 111 are fixedly connected by the connecting shaft 112, the second auger 111 in the fixed cylinder 110 can be driven to rotate clockwise together. In this way, during the drilling process of the drill bit 106, the second auger 111 first uses the spiral blades to lift the stone slag and mud generated during the drilling process into the fixed cylinder 110, then conveys them to the rotating cylinder 104 through the driving cylinder 401, and then gradually lifts them into the soil shell 207 through the first auger 107. Therefore, during the drilling process, the drilling mechanism 100 can timely discharge the stone slag and mud from the bottom of the hole to the outside, thus avoiding blockage of the drill bit 106 and affecting the construction progress, ensuring the cleanliness of the bottom of the hole, improving the pile forming quality of the cast-in-place pile. The drilling mechanism 100 can perform drilling construction at one time without regularly using a slag bucket to take out the stone slag at the bottom of the hole and discharge it to the outside, improving the construction efficiency of drilling. Embodiment 1

[0083] As Figures 4 - 6As shown, in this embodiment, the mud recovery mechanism 200 includes: a second toothed ring 201 fixedly sleeved on the outside of the rotating cylinder 104; a second spur gear 202 meshed and connected with the second toothed ring 201; a reciprocating lead screw 203 fixedly sleeved at the central position of the second spur gear 202; a cavity ring 204 screwed and sleeved on the outside of the reciprocating lead screw 203, and the cavity ring 204 is slidably sleeved on the outside of the rotating cylinder 104; there are five nozzles 205, which are fixedly connected annularly and equidistantly on the outside of the cavity ring 204, and the nozzles 205 are communicated with the inside of the cavity ring 204; a driving block 206 is fixedly connected to the inner wall of the cavity ring 204, and the driving block 206 is slidably and embeddedly connected with the reciprocating lead screw 203. The mud recovery mechanism 200 includes: a soil shell 207 rotatably sleeved on the top of the rotating cylinder 104; one end of a first hose 208 is fixedly connected to the side wall of the soil shell 207, and the first hose 208 is communicated with the inside of the soil shell 207; one end of a sand pump 209 is fixedly connected to the other end of the first hose 208, and a bent pipe is fixedly connected to the other end of the sand pump 209; a filter tank 210 is fixedly connected to the bottom of the sand pump 209; a partition plate 211 is fixedly connected to the inner wall of the filter tank 210; there are eight filter blocks 212, which are fixedly connected equidistantly on the partition plate 211. The mud recovery mechanism 200 includes: a feeding pipe 213 is fixedly connected to the side wall of the filter tank 210, and the feeding pipe 213 is communicated with the inside of the filter tank 210; a pressure pump 214 is fixedly connected to the side wall of the filter tank 210; one end of a second hose 215 is fixedly connected to the output end of the pressure pump 214, and the other end is fixedly connected to the top of the cavity ring 204.

[0084] In this embodiment, the sand pump 209 and the first hose 208 in the mud recovery mechanism 200 can pump out the mud and stone slag in the mud shell 207, and then discharge the mud and stone slag into the filtration tank 210 through the elbow pipe. The filter block 212 on the partition plate 211 in the filtration tank 210 can filter the excavated stone slag and mud mixture. The generated mud after filtration can flow to the lower part of the partition plate 211. Construction workers can add sand grains, etc. to the feeding pipe 213 according to the filtered mud, so as to facilitate the preparation of different types of mud according to different soil layers. Then, the high-quality mud is pressurized and transported to the cavity ring 204 through the pressure pump 214 and the second hose 215. Since the rotating cylinder 104 will drive the second gear ring 201 and the second spur gear 202 to mesh and rotate, the reciprocating lead screw 203 will be driven to rotate. The driving block 206 on the inner wall of the cavity ring 204 and the reciprocating lead screw 203 are slidably and embeddedly connected. In this way, the cavity ring 204 can be driven to slide reciprocally along the rotating cylinder 104 in the vertical direction. During the sliding process, the mud is sprayed onto the hole wall through the multiple nozzles 205 on the outer wall of the cavity ring 204, so that a layer of clay mud will be formed on the surface of the hole wall, thus playing a role in protecting the hole wall and preventing the hole wall from collapsing. The mud generates a large hydrostatic pressure in the hole, which can also effectively prevent the hole wall from collapsing. Moreover, the sprayed mud can also cool the drill bit 106 and the drill barrel 105, improving the service life of the drilling tool. By providing the mud recovery mechanism 200, the underground mud can be recovered and utilized, improving the utilization efficiency of natural resources and saving the material cost.

[0085] The present invention also provides a construction process for a cast-in-place pile drilling device used in a pumping station, which specifically includes the following steps:

[0086] Step 1: Measure and set out the position, calibrate the drilling position, then bury the casing, move the drilling device to the construction position and reinforce the position. The hydraulic cylinder 302 extends to drive the socket seat 305 and the rotating cylinder 104 to descend, so that the drill bit 106 continuously drills into deeper soil.

[0087] Step 2: First, use the second auger 111 to lift the stone slag and mud generated during the drilling process to the fixed cylinder 110 through the spiral blades, then transport them to the rotating cylinder 104 through the driving cylinder 401, and then gradually lift them to the mud shell 207 through the first auger 107. Thus, the drilling mechanism 100 can timely discharge the stone slag and mud from the bottom of the hole to the outside during the drilling process to complete the cleaning of the drilling slag.

[0088] Step 3: The sand pump 209 and the first hose 208 can pump out the mud and stone slag in the mud shell 207, and then discharge the mud and stone slag into the filtration tank 210 through the elbow pipe. The filter block 212 on the partition plate 211 in the filtration tank 210 can filter the excavated stone slag and mud mixture.

[0089] Step Four: Rotating the rotating cylinder 104 will drive the second toothed ring 201 and the second spur gear 202 to mesh and rotate, which can drive the cavity ring 204 to reciprocate and slide vertically along the rotating cylinder 104. During the sliding process, mud is sprayed onto the hole wall through multiple nozzles 205 on the outer wall of the cavity ring 204, so that a layer of clay mud will be formed on the surface of the hole wall.

[0090] Step Five: By driving the second motor 109, the bevel gear set 108 and the first auger 107 to rotate counterclockwise, it is convenient to transport the clay and crushed stones in the soil shell 207 to the bottom end of the rotating cylinder 104, and then the clay is respectively transported into the five soil discharge shells 415.

[0091] Step Six: The lifting ring 409 will reciprocate up and down along the rotating cylinder 405. After the clay is extruded into the soil discharge shell 415, it will flow under the first one-way rotating plate 413. When the sliding plate 411 descends, it will drive the first one-way rotating plate 413 to descend together. The first one-way rotating plate 413 can be used to scrape and push the clay between the sliding plate 411 and the soil discharge shell 415 under the drilling cylinder 105. When the sliding plate 411 continues to press down, the clay can be layer by layer compacted by the compaction plate 417. Embodiment Two

[0092] As Figures 7 - 15 shown, in this embodiment, the support mechanism 300 includes: a support frame 301 for keeping the drilling mechanism 100 perpendicular to the ground; one end of a hydraulic cylinder 302 is fixedly connected to the top of the support frame 301; a telescopic column 303 is fixedly connected to the top of the hydraulic cylinder 302, and the second driving motor 109 is fixedly connected to the side wall of the telescopic column 303; a lifting plate 304 is fixedly connected to the bottom end of the telescopic column 303, and the lifting plate 304 is rotatably sleeved with the rotating cylinder 104; a socket seat 305 is fixedly connected to the bottom end of the hydraulic cylinder 302, and the socket seat 305 is rotatably sleeved with the rotating cylinder 104. At both ends of the two helical columns 403, a first torsion spring 404 is fixedly connected to the connection part with the rotating ring 402. The filling and compaction mechanism 400 includes: a positioning seat 412 is fixedly connected to the inner wall of the sliding plate 411 and is rotatably connected to the first one-way rotating plate 413, and a second torsion spring is fixedly connected to the connection part of the first one-way rotating plate 413 and the positioning seat 412; a stop bar 414 is fixedly connected to the inner wall of the sliding plate 411 and abuts against the top of the first one-way rotating plate 413; there are five soil discharge shells 415, which are fixedly connected annularly and equidistantly inside the drilling cylinder 105, and the sliding plate 411 is slidably connected to the soil discharge shells 415; a second one-way rotating plate 416 is rotatably connected to the inner wall of the soil discharge shell 415, and a third torsion spring is fixedly arranged at the connection part of the second one-way rotating plate 416 and the soil discharge shell 415. A second stop bar is arranged on the top of the second one-way rotating plate 416 and abuts against it; there are five compaction plates 417, all of which are fixedly connected to the bottom end of the sliding plate 411.

[0093] During specific implementation, when negative pressure is generated during drilling in the soft soil layer, causing the collapse or diameter reduction of the hole wall, first stop the drilling operation, then pump the clay in the filter pool 210 into the soil shell 207 through the sand and gravel pump 209, or directly add clay or crushed stones into the soil shell 207. Then, drive the second driving motor 109, the bevel gear set 108 and the first auger 107 to rotate counterclockwise, so as to facilitate the transportation of the clay and crushed stones in the soil shell 207 to the bottom end of the rotating cylinder 104. Then, the clay is respectively transported into the five soil discharge shells 415. At the same time, the connecting shaft 112 will drive the driving cylinder 401 to rotate, and then the driving cylinder 401 can drive the rotating ring 402 and the two helical tooth columns 403 on the outer wall to rotate counterclockwise at the same time. Therefore, the two helical tooth columns 403 will remain engaged with the teeth 406 on the inner wall of the rotating cylinder 405, so as to drive the rotating cylinder 405 to rotate synchronously. In this way, the lifting ring 409 can be driven to reciprocate up and down along the rotating cylinder 405. The five connecting arms 410 will drive the five sliding plates 411 to slide down at the same time. After the clay is extruded into the soil discharge shell 415, it will flow under the one-way rotating plate 413. When the sliding plate 411 descends, it will drive the one-way rotating plate 413 to descend together. Under the action of the stop bar 414, the one-way rotating plate 413 can be blocked from rotating upward. The one-way rotating plate 413 can scrape and push the clay between the sliding plate 411 and the soil discharge shell 415 under the drill cylinder 105. When the clay is discharged to the bottom of the hole, it will discharge the outside air into the space between the drill bit 106 and the bottom of the hole at the same time. Therefore, the negative pressure intensity can be reduced, and further diameter reduction of the hole wall can be avoided. When the sliding plate 411 continues to press down, the clay can be compacted layer by layer through the compaction plate 417. When the sliding plate 411 rises, it is blocked by the one-way rotating plate 416, so as to prevent the soil from backfilling into the soil discharge shell 415. Therefore, the collapsed hole wall can be backfilled and tamped with clay in the first time to prevent the increase of the collapse area. The filling and pressing mechanism 400 can be used to carry out emergency treatment when the hole wall collapses and the hole wall diameter is reduced, so as to ensure the resumption of drilling construction as soon as possible.

[0094] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0095] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bored pile drilling device for a pump station, characterized in that: include: A drilling mechanism (100), the drilling mechanism (100) comprising a rotating cylinder (104), a drill cylinder (105) being fixedly connected to the bottom of the rotating cylinder (104), and a drill bit (106) being fixedly connected to the bottom of the drill cylinder (105); A mud recovery mechanism (200) is arranged on one side of the drilling mechanism (100); A supporting mechanism (300) is rotatably disposed outside the rotating cylinder (104); The packing mechanism (400) is fixedly arranged inside the drill tube (105), and comprises a driving tube (401). The bottom of the driving tube (401) is fixedly connected to a rotating ring (402). Two oblique tooth columns (403) are symmetrically arranged on the outer wall of the rotating ring (402). A rotating tube (405) is sleeved on the outside of the rotating ring (402). A plurality of locking teeth (406) meshing with the oblique tooth columns (403) are fixedly connected to the inner wall of the rotating tube (405) at equal intervals. A positioning ring (406) is rotatably sleeved on the outside of the rotating tube (405). 407), the positioning ring (407) is fixedly connected to the inside of the drill tube (105), a reciprocating spiral groove (408) is provided on the outer wall of the rotating cylinder (405), a lifting ring (409) is slidably sleeved on the outside of the rotating cylinder (405) and is slidably embedded in the reciprocating spiral groove (408), one end of five connecting arms (410) are fixedly connected to the top of the lifting ring (409) at equal intervals in an annular shape, the other ends of the five connecting arms (410) are fixedly connected to a sliding plate (411), and a one-way rotating plate (413) is provided on the inner wall of the sliding plate (411); The drilling mechanism (100) comprises: A fixed tube (110) is fixedly connected to the center position inside the drill tube (105), and the fixed tube (110) is rotatably sleeved with the rotating ring (402); The second auger (111) is rotatably sleeved inside the fixed cylinder (110); A connecting shaft (112) is fixedly connected to the center position inside the driving cylinder (401), and the bottom end of the connecting shaft (112) is fixedly connected to the center shaft of the auger (111); The mud recovery mechanism (200) comprises: The second gear ring (201) is fixedly sleeved on the outside of the rotating cylinder (104); Spur gear 2 (202) is meshingly connected with gear ring 2 (201); A reciprocating screw rod (203) is fixedly sleeved at the center of the second spur gear (202); The cavity ring (204) is screwed and sleeved on the outside of the reciprocating screw rod (203), and the cavity ring (204) is slidably sleeved on the outside of the rotating cylinder (104); Five nozzles (205) are provided and are fixedly connected to the outside of the cavity ring (204) at equal intervals in an annular manner. The nozzles (205) are connected to the inside of the cavity ring (204); A driving block (206) is fixedly connected to the inner wall of the cavity ring (204), and the driving block (206) is slidably embedded in connection with the reciprocating screw rod (203); The mud recovery mechanism (200) comprises: The soil shell (207) is rotatably sleeved on the top of the rotating cylinder (104); A hose 1 (208), one end of which is fixedly connected to the side wall of the soil shell (207), and the hose 1 (208) is connected to the inside of the soil shell (207); A gravel pump (209), one end of which is fixedly connected to the other end of the hose (208), and the other end of the gravel pump (209) is fixedly connected to a bend pipe; A filter tank (210) is fixedly connected to the bottom of the sand and gravel pump (209); A partition (211) is fixedly connected to the inner wall of the filter tank (210); Eight filter blocks (212) are provided and fixedly connected to the partition plate (211) at equal distances; The mud recovery mechanism (200) comprises: A feeding pipe (213) is fixedly connected to a side wall of the filter tank (210), and the feeding pipe (213) is in communication with the interior of the filter tank (210); A pressure pump (214) fixedly connected to a side wall of the filter tank (210); One end of the second hose (215) is fixedly connected to the output end of the pressure pump (214), and the other end is fixedly connected to the top of the cavity ring (204).

2. A bored pile drilling device for a pump station according to claim 1, characterized in that: The drilling mechanism (100) comprises: A driving motor 1 (101) is disposed at the top of the rotating cylinder (104); Spur gear one (102), fixedly connected to the output end of drive motor one (101); A gear ring 1 (103) is fixedly sleeved on the outside of the rotating cylinder (104) and meshedly connected with a spur gear 1 (102); An auger (107) is rotatably sleeved inside the drill tube (105); A bevel gear set (108) is fixedly connected to the top of the central shaft of the auger (107); The output end of the second driving motor (109) is fixedly connected to the bevel gear set (108).

3. A bored pile drilling device for a pump station according to claim 1, characterized in that: The supporting mechanism (300) comprises: A support frame (301) is used to keep the drilling mechanism (100) vertical to the ground; A hydraulic cylinder (302), one end of which is fixedly connected to the top of the support frame (301); The telescopic column (303) is fixedly connected to the top of the hydraulic cylinder (302), and the second driving motor (109) is fixedly connected to the side wall of the telescopic column (303); A lifting plate (304) is fixedly connected to the bottom end of the telescopic column (303), and the lifting plate (304) is rotatably sleeved with the rotating cylinder (104); The sleeve seat (305) is fixedly connected to the bottom end of the hydraulic cylinder (302), and the sleeve seat (305) is rotatably sleeved with the rotating cylinder (104).

4. A bored pile drilling device for a pump station according to claim 3, characterized in that: A torsion spring 1 (404) is fixedly connected to the connection points between the two ends of the two oblique tooth columns (403) and the rotating ring (402).

5. A bored pile drilling device for a pump station according to claim 3, characterized in that: The filling and pressing mechanism (400) comprises: The positioning seat (412) is fixedly connected to the inner wall of the sliding plate (411) and is rotationally connected to the one-way rotating plate (413). The connection between the one-way rotating plate (413) and the positioning seat (412) is fixedly connected to a torsion spring (2). A blocking bar (414) is fixedly connected to the inner wall of the sliding plate (411) and contacts the top of the one-way rotating plate (413); Five soil removal shells (415) are provided and are fixedly connected to the inside of the drill tube (105) in an annular manner and at equal distances. The sliding plate (411) is slidably connected to the soil removal shells (415); The one-way rotating plate 2 (416) is rotatably connected to the inner wall of the soil discharge shell (415), and a torsion spring 3 is fixedly arranged at the connection with the soil discharge shell (415). The top of the one-way rotating plate 2 (416) is provided with a blocking bar 2 which abuts against it; Five compacting plates (417) are provided, and are all fixedly connected to the bottom end of the sliding plate (411).

6. The construction process of a bored pile drilling device for a pump station according to claim 5, characterized in that: The specific steps include: Step 1: measure and lay out, calibrate the drilling position, then bury the casing, move the drilling device to the construction position and reinforce the position, the hydraulic cylinder (302) extends to drive the sleeve seat (305) and the rotating cylinder (104) to descend, so that the drill bit (106) continues to drill deeper into the soil; Step 2: using the second auger (111) to first lift the slag and mud generated during the drilling process into the fixed cylinder (110) using the spiral blade, then transport them to the rotating cylinder (104) through the driving cylinder (401), and then gradually lift them into the soil shell (207) through the first auger (107), so that the drilling mechanism (100) can timely discharge the slag and mud from the bottom of the hole to the outside during the drilling process, completing the cleaning of the drilling slag; Step 3: The gravel pump (209) and the hose 1 (208) extract the mud and slag in the soil shell (207), and then discharge the mud and slag into the filter tank (210) through the bent pipe. The filter block (212) on the partition (211) in the filter tank (210) can filter the excavated slag and mud mixture; Step 4: The rotating cylinder (104) drives the gear ring 2 (201) and the spur gear 2 (202) to mesh and rotate, driving the cavity ring (204) to slide back and forth in the vertical direction along the rotating cylinder (104), and during the sliding process, the slurry is sprayed onto the hole wall through the multiple nozzles (205) on the outer wall of the cavity ring (204), so that a layer of mud is formed on the surface of the hole wall; Step 5: The second motor (109), the bevel gear set (108) and the auger (107) are driven to rotate counterclockwise, so as to facilitate the transportation of clay and stone flakes in the soil shell (207) to the bottom end of the rotating cylinder (104), and then the clay is transported to the inside of the five soil discharge shells (415); Step 6: The lifting ring (409) will reciprocate and rise and fall along the rotating drum (405), and the clay will be squeezed into the soil discharge shell (415) and then flow under the one-way rotating plate (413). When the sliding plate (411) descends, the one-way rotating plate (413) will be driven to descend together. The one-way rotating plate (413) will be used to scrape and push the clay between the sliding plate (411) and the soil discharge shell (415) to the bottom of the drill tube (105). The sliding plate (411) continues to press downward to compact the clay layer by layer through the compacting plate (417).

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