Cast-in-place pile drilling device for pump station and construction technology

Abstract

The invention relates to the technical field of cast-in-place pile construction, in particular to a cast-in-place pile drilling device for a pump station and a construction technology, and the cast-in-place pile drilling device comprises a drilling mechanism, a slurry recycling mechanism, a supporting mechanism and a tamping mechanism. According to the device, when the sliding plate descends, the first one-way rotating plate is driven to descend together, clay between the sliding plate and the soil discharging shell can be scraped and pushed to the position below the drilling barrel through the first one-way rotating plate, when the clay is discharged into the bottom of a hole, external air can be discharged into the space between a drill bit and the bottom of the hole together, and therefore the negative pressure strength can be reduced; a sliding plate continues to press downwards, clay can be compacted layer by layer through a compacting plate, when the sliding plate ascends, blocking is conducted through a second one-way rotating plate, and therefore the situation that the soil is backfilled into a soil discharging shell can be prevented, clay backfilling and tamping can be conducted on the collapsed hole wall at the first time, the collapse area is prevented from being increased, and the construction efficiency is improved. Emergency treatment can be carried out when hole wall collapse and hole wall hole shrinkage occur through the tamping mechanism, and it is guaranteed that follow-up drilling construction is recovered as soon as possible.

Description

Technical Field

[0001] The invention relates to the technical field of cast-in-place pile construction, in particular to a cast-in-place pile drilling device for a pump station and a construction process. Background Art

[0002] A bored pile is a pile made by drilling a hole in place and pouring concrete or reinforced concrete. In the construction of high-rise buildings, substations or bridges, bored piles are usually required. In the construction of bored piles, mud wall impact bored pile construction is the most commonly used bored pile construction process. The mud wall impact bored pile construction process relies on the impact kinetic energy generated by the deadweight of the heavy hammer to impact the soil layer or the broken rock layer to form a pile hole, and then use a slag removal barrel to discharge the drilled slag and rock cuttings. The structure of the bored pile will directly affect the bearing capacity and seismic resistance of the concrete structure.

[0003] In the underground soft soil layer, if the water in the borehole flows downward too fast, or the drilling speed is too fast, which will cause the air in the hole to be quickly discharged, negative pressure may be formed. The negative pressure will increase the effective stress of the soil in the hole wall, thereby causing the hole wall to collapse or shrink in diameter. When the hole wall shrinks or collapses, it is generally necessary to stop drilling immediately, and then backfill the borehole with clay, stone flakes, etc., and tamp each layer during backfilling to prevent further collapse. However, the drill tube needs to be pulled out of the borehole before backfilling, which makes it difficult to backfill clay in the first time. When the drill tube is pulled out of the borehole, it may also cause an increase in negative pressure, thereby further expanding the scope of hole wall collapse or shrinkage. The existing bored pile drilling device lacks the function of emergency treatment of hole wall collapse caused by negative pressure. Summary of the invention

[0004] The object of the present invention is to provide a bored pile drilling device and a construction process for a pump station to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A bored pile drilling device for a pump station, comprising: A drilling mechanism, the drilling mechanism comprising a rotating cylinder, a drill cylinder is fixedly connected to the bottom of the rotating cylinder, and a drill bit is fixedly connected to the bottom of the drill cylinder; A mud recovery mechanism is arranged on one side of the drilling mechanism; A supporting mechanism is rotatably disposed outside the rotating cylinder; The packing mechanism is fixedly arranged inside the drill barrel, and the packing mechanism includes a driving cylinder, a rotating ring is fixedly connected to the bottom of the driving cylinder, two bevel gear columns are symmetrically arranged on the outer wall of the rotating ring, a rotating cylinder is sleeved on the outside of the rotating ring, and a plurality of latching teeth meshing with the bevel gear columns are fixedly connected in an annular manner at equal distances on the inner wall of the rotating cylinder, a positioning ring is rotatably sleeved on the outside of the rotating cylinder, and the positioning ring is fixedly connected to the inside of the drill barrel, a reciprocating spiral groove is provided on the outer wall of the rotating cylinder, a lifting ring is slidingly sleeved on the outside of the rotating cylinder and is slidably embedded in the reciprocating spiral groove, one end of five connecting arms are fixedly connected in an annular manner at equal distances on the top of the lifting ring, and the other ends of the five connecting arms are fixedly connected to a sliding plate, and a one-way rotating plate is arranged on the inner wall of the sliding plate.

[0006] Furthermore, the drilling mechanism comprises: A driving motor 1 is arranged at the top of the rotating cylinder; Spur gear one, fixedly connected to the output end of driving motor one; The first gear ring is fixedly sleeved on the outside of the rotating cylinder and meshed with the first spur gear; Auger 1, rotatably sleeved inside the drill tube; A bevel gear set is fixedly connected to the top of a central shaft of the auger; The output end of the driving motor 2 is fixedly connected to the bevel gear set.

[0007] Furthermore, the drilling mechanism comprises: A fixed tube, fixedly connected to the center of the drill tube, and the fixed tube is rotatably sleeved with the rotating ring; Auger 2, rotatably sleeved inside the fixed cylinder; The connecting shaft is fixedly connected to the center position inside the driving cylinder, the bottom end of the connecting shaft is fixedly connected to the center axis of the second auger, and the top end of the connecting shaft is fixedly connected to the center axis of the first auger.

[0008] Furthermore, the mud recovery mechanism comprises: The second gear ring is fixedly sleeved on the outside of the rotating cylinder; Spur gear two is meshed and connected with gear ring two; The reciprocating screw rod is fixedly sleeved at the center position of the second spur gear; A cavity ring is screwed and sleeved on the outside of the reciprocating screw rod, and the cavity ring is slidably sleeved on the outside of the rotating cylinder; There are five nozzles, which are fixedly connected to the outside of the cavity ring at equal distances in an annular shape, and the nozzles are connected to the inside of the cavity ring; 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 screw rod.

[0009] Furthermore, the mud recovery mechanism comprises: The soil shell is rotatably sleeved on the top of the rotating cylinder; A hose 1, one end of which is fixedly connected to the side wall of the soil shell, and the hose 1 is connected to the inside of the soil shell; A gravel pump, one end of which is fixedly connected to a hose and the other end of which is fixedly connected to a bend pipe; The filter tank is fixedly connected to the bottom of the sand and gravel pump; A partition plate is fixedly connected to the inner wall of the filter tank; There are eight filter blocks, which are fixedly connected to the partition plate at equal distances.

[0010] Furthermore, the mud recovery mechanism comprises: A feeding pipe is fixedly connected to the side wall of the filter tank, and the feeding pipe is connected to the inside of the filter tank; A pressure pump, fixedly connected to the side wall of the filter tank; One end of the hose 2 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.

[0011] Furthermore, the support mechanism comprises: A support frame, used to keep the drilling mechanism vertical to the ground; A hydraulic cylinder, one end of which is fixedly connected to the top of the support frame; 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; A lifting plate is fixedly connected to the bottom end of the telescopic column, and the lifting plate is rotatably sleeved with the rotating cylinder; The sleeve seat is fixedly connected to the bottom end of the hydraulic cylinder, and the sleeve seat is rotatably sleeved with the rotating cylinder.

[0012] Furthermore, a torsion spring 1 is fixedly connected to the connection between the two ends of the two helical gear columns and the rotating ring.

[0013] Furthermore, the filling and pressing mechanism comprises: A positioning seat is fixedly connected to the inner wall of the sliding plate and is rotationally connected to the one-way rotating plate 1. A torsion spring 2 is fixedly connected to the connection between the one-way rotating plate 1 and the positioning seat; A stop bar is fixedly connected to the inner wall of the sliding plate and contacts a top portion of the one-way rotating plate; There are five soil removal shells, which are fixedly connected to the inside of the drill tube at equal intervals in an annular shape, and the sliding plate is slidably connected to the soil removal shells; A one-way rotating plate 2 is rotatably connected to the inner wall of the soil discharge shell, and a torsion spring 3 is fixedly arranged at the connection with the soil discharge shell, and a blocking bar 2 is arranged on the top of the one-way rotating plate 2 to abut against it; There are five compacting plates, all of which are fixedly connected to the bottom end of the sliding plate.

[0014] A construction process of a bored pile drilling device for a pump station specifically comprises the following steps: Step 1: Measure and stake out, calibrate the drilling position, then bury the casing, move the drilling device to the construction position and reinforce the position, and the hydraulic cylinder extends to drive the sleeve and the rotating cylinder to descend, so that the drill bit can continue to drill deeper into the soil; Step 2: Use the spiral blades of the auger 2 to lift the slag and mud generated during the drilling process into the fixed cylinder, and then transport them to the rotating cylinder through the driving cylinder, and then gradually lift them into the soil shell through the auger 1, so that the drilling mechanism can discharge the slag and mud from the bottom of the hole to the outside in time during the drilling process, completing the cleaning of the drilling slag; Step 3: The gravel pump and hose can extract the mud and slag from the soil shell, and then discharge the mud and slag into the filter tank through the elbow. The filter blocks on the partition in the filter tank can filter the excavated slag and mud mixture; Step 4: The rotating cylinder drives the gear ring 2 and the spur gear 2 to mesh and rotate, and can drive the cavity ring to slide back and forth in the vertical direction along the rotating cylinder. During the sliding process, mud is sprayed on 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; 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; 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.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 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.

[0016] 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.

[0017] 3. The clay in the filter pool is pumped into the soil shell by a sand and gravel pump, or clay or stone is directly added to the soil shell, and then the second driving motor, the bevel gear set and the auger are rotated counterclockwise, so as to facilitate the transportation of the clay and stone in the soil shell to the bottom of the rotating cylinder, and then the clay is transported to the inside of the five soil discharge shells respectively, and the connecting shaft is used to drive the driving cylinder to rotate at the same time, and then the driving cylinder can drive the rotating ring and the two oblique tooth columns on the outer wall to rotate counterclockwise at the same time, so that the two oblique tooth columns will keep in engagement with the teeth on the inner wall of the rotating cylinder, so as to drive the rotating cylinder to rotate synchronously, so that the lifting ring can be driven to lift and reciprocate along the rotating cylinder, and the five sliding plates can be driven to slide downward at the same time by five connecting arms. 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 drives the one-way rotating plate 1 down together. Under the action of the baffle bar, the one-way rotating plate 1 can be blocked from rotating upwards. The one-way rotating plate 1 can be used to scrape the clay between the sliding plate and the soil discharge shell to the bottom of the drill tube. When the clay is discharged to the bottom of the hole, the outside air will be discharged into the space between the drill bit and the bottom of the hole. Therefore, the negative pressure intensity can be reduced to avoid further shrinkage of the hole wall. The sliding plate continues to press down to compact the clay layer by layer through the compaction plate. When the sliding plate rises, it is blocked by the one-way rotating plate 2, thereby preventing the soil from being backfilled into the soil discharge shell. Therefore, the collapsed hole wall can be backfilled and compacted with clay as soon as possible to prevent the collapse area from increasing. The filling and pressing mechanism can be used to perform emergency treatment when the hole wall collapses and the hole wall shrinks, to ensure that the drilling construction is resumed as soon as possible afterwards. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the overall use state structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 It is a structural schematic diagram of the drilling mechanism in the present invention; Figure 4 It is a schematic diagram of the structure of the mud recovery mechanism in the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the filter tank in the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the cavity ring in the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the drill tube in the present invention; Figure 8 It is a schematic diagram of the bottom structure of the drill bit in the present invention; Fig. 9 It is a schematic diagram of the structure of the filling and pressing mechanism in the present invention; Fig.10 It is a schematic diagram of the rotary drum connection structure in the present invention; Fig.11 It is a schematic diagram of the rotating ring connection structure in the present invention; Fig.12 It is a schematic diagram of the inner wall structure of the rotary drum in the present invention; Fig.13 It is a schematic diagram of the connection structure of the soil shell in the present invention; Fig.14 It is a schematic diagram of the inner wall structure of the sliding plate in the present invention; Fig.15 It is a schematic diagram of the internal structure of the soil shell in the present invention.

[0019] In the figure: 100, drilling mechanism; 101, driving motor 1; 102, spur gear 1; 103, gear ring 1; 104, rotating cylinder; 105, drilling 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 screw rod; 204, cavity ring; 205, nozzle; 206, driving block; 207, soil shell; 208, hose 1; 209, sand and gravel pump; 210, filter tank; 211, partition; 212, filter block; 213, filter block; 214, filter block; 215, filter block; 216, filter block; 217, filter block; 218, filter block; 219, filter block; 220, filter tank; 221, filter block; 222, filter block; 223, filter block; 224, filter block; 225, filter block; 226, filter block; 227, filter block; 228, filter block; 229, filter block; 230, filter tank; 231, filter block; 232, filter block; 233, filter block; 234, filter block; 235, filter block; 236, filter block; 237, filter block; 238, filter block; 239, filter block; 240, filter tank; 241, filter block; 242, filter block; 243, filter block; 244, filter block; 245, filter block; 246 3. 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. Filling mechanism; 401. Drive cylinder; 402. Rotating ring; 403. Bevel gear column; 404. Torsion spring 1; 405. Rotating cylinder; 406. Gear; 407. Positioning ring; 408. Reciprocating spiral groove; 409. Lifting ring; 410. Connecting arm; 411. Sliding plate; 412. Positioning seat; 413. One-way swivel plate 1; 414. Baffle bar; 415. Discharge shell; 416. One-way swivel plate 2; 417. Compacting plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figures 1 to 15In an embodiment of the present invention, a bored pile drilling device for a pump station includes: a drilling mechanism 100, the drilling mechanism 100 includes a rotating cylinder 104, the bottom of the rotating cylinder 104 is fixedly connected to a drill tube 105, and the bottom of the drill tube 105 is fixedly connected to a drill bit 106; a mud recovery mechanism 200, which is arranged on one side of the drilling mechanism 100; a support mechanism 300 is rotatably arranged outside the rotating cylinder 104; a filling mechanism 400 is fixedly arranged inside the drill tube 105, and the filling mechanism 400 includes a driving cylinder 401, the bottom of the driving cylinder 401 is fixedly connected to a rotating ring 402, and two oblique tooth columns 403 are symmetrically arranged on the outer wall of the rotating ring 402, and the outer sleeve of the rotating ring 402 A rotating drum 405 is connected, and a plurality of latching teeth 406 meshing and engaging with the bevel tooth column 403 are fixedly connected in an annular manner at equal distances on the inner wall of the rotating drum 405. A positioning ring 407 is rotatably sleeved on the outside of the rotating drum 405, and 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 drum 405, and a lifting ring 409 is slidably sleeved on the outside of the rotating drum 405 and is slidably embedded in the reciprocating spiral groove 408. One ends of five connecting arms 410 are fixedly connected in an annular manner at equal distances on the top of the lifting ring 409, and 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 includes: a driving motor 101 is arranged at the top of a rotating cylinder 104; a spur gear 102 is fixedly connected to the output end of the driving motor 101; a gear ring 103 is fixedly sleeved on the outside of the rotating cylinder 104 and meshed with the spur gear 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 axis of the auger 107; and the output end of the driving motor 2 109 is fixedly connected to the bevel gear set 108. The drilling mechanism 100 includes: a fixed cylinder 110 is fixedly connected to the center position inside the drill tube 105, and the fixed cylinder 110 is rotatably sleeved with the rotating ring 402; the auger 2 111 is rotatably sleeved inside the fixed cylinder 110; a connecting shaft 112 is fixedly connected to the center position inside the driving cylinder 401, the bottom end of the connecting shaft 112 is fixedly connected to the central axis of the auger 2 111, and the top end of the connecting shaft 112 is fixedly connected to the central axis of the auger 107.

[0022] Specifically, the output end of the driving motor 101 in the drilling mechanism 100 drives the spur gear 102 to rotate, and then drives the gear ring 103 and the rotating cylinder 104 to rotate, and the rotating cylinder 104 drives the bottom drill tube 105 and the drill bit 106 to rotate, and 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 continues to drill into deeper soil, and at the same time, the output end of the driving motor 2 109 drives the bevel gear set 108 to rotate, thereby driving the central axis of the auger 107 to rotate. Since the auger 107 and the auger 2 111 are fixedly connected by the connecting shaft 112, the auger 2 111 in the fixed cylinder 110 can be driven to rotate clockwise. The needle rotates, so that when the drill bit 106 is drilling, the slag and mud generated in the drilling process are first lifted into the fixed cylinder 110 by the spiral blades using the auger 111, and then transported to the rotating cylinder 104 through the driving cylinder 401, and then gradually lifted into the soil shell 207 through the auger 107. Therefore, the drilling mechanism 100 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 106 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 100 can perform one-time drilling construction without regularly using a slag removal barrel to remove the slag at the bottom of the hole and discharge it to the outside, thereby improving the construction efficiency of the drilling. Embodiment 1

[0023] like Figure 4-6As shown, in this embodiment, the mud recovery mechanism 200 includes: a gear ring 201 fixedly sleeved on the outside of the rotating cylinder 104; a spur gear 202 meshingly connected with the gear ring 201; a reciprocating screw 203 fixedly sleeved at the center position of the spur gear 202; a cavity ring 204 screwed and sleeved on the outside of the reciprocating screw 203, and the cavity ring 204 is slidably sleeved on the outside of the rotating cylinder 104; five nozzles 205 are provided, which are fixedly connected to the outside of the cavity ring 204 at equal distances in an annular shape, and the nozzles 205 are connected to the inside of the cavity ring 204; a drive block 206 is fixedly connected to the inner wall of the cavity ring 204, and the drive block 206 is slidably embedded in the reciprocating screw 203. The mud recovery mechanism 200 includes: a soil shell 207 is rotatably sleeved on the top of the rotating cylinder 104; one end of a hose 208 is fixedly connected to the side wall of the soil shell 207, and the hose 208 is connected to the inside of the soil shell 207; one end of a sand and gravel pump 209 is fixedly connected to the other end of the hose 208, and the other end of the sand and 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 211 at equal distances. 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 connected to the inside of the filter tank 210; a booster pump 214 is fixedly connected to the side wall of the filter tank 210; one end of a hose 215 is fixedly connected to the output end of the booster pump 214, and the other end is fixedly connected to the top of the cavity ring 204.

[0024] In this embodiment, the gravel pump 209 and the hose 1 208 in the mud recovery mechanism 200 can 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, and the mud produced after filtration can flow under the partition 211. The construction personnel can add sand and the like 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, and then the high-quality mud is pressurized and transported to the cavity ring 204 through the pressure pump 214 and the hose 215. Since the rotating cylinder 104 will drive the gear ring 201 and the spur gear 202 to mesh and rotate, it will drive The reciprocating screw 203 rotates, and the driving block 206 on the inner wall of the cavity ring 204 is slidably embedded in the connection with the reciprocating screw 203, so that the cavity ring 204 can be driven to slide back and forth in the vertical direction along the rotating cylinder 104, and during the sliding process, mud is sprayed on 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, 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, and the sprayed mud can also cool the drill bit 106 and the drill barrel 105, thereby increasing the service life of the drilling tool. By providing a mud recovery mechanism 200, the underground mud can be recovered and utilized, thereby improving the utilization efficiency of natural resources and saving material costs.

[0025] The present invention also provides a construction process of a bored pile drilling device for a pump station, which specifically comprises the following steps: 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 socket 305 and the rotating cylinder 104 to descend, so that the drill bit 106 continues to drill deeper into the soil; Step 2: The slag and mud generated during the drilling process are first lifted into the fixed cylinder 110 by the spiral blades of the auger 2 111, and then transported to the rotating cylinder 104 through the driving cylinder 401, and then gradually lifted into the soil shell 207 through the auger 1 107, so that the drilling mechanism 100 can discharge the slag and mud from the bottom of the hole to the outside in time during the drilling process, completing the cleaning of the drilling slag; Step 3: The gravel pump 209 and the hose 1 208 can extract the mud and slag in the soil shell 207, and then discharge the mud and slag into the filter tank 210 through the elbow 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 201 and the spur gear 202 to mesh and rotate, and can drive the cavity ring 204 to slide back and forth in the vertical direction along the rotating cylinder 104. During the sliding process, the slurry is sprayed on 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 the clay and stone chips 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 respectively; Step 6: The lifting ring 409 will reciprocate and rise and fall along the rotating drum 405. After the clay is squeezed 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. The 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 to the bottom of the drill tube 105. The sliding plate 411 continues to press down to compact the clay layer by layer through the compacting plate 417. Embodiment 2

[0026] like Figure 7-15 As shown, in this embodiment, the support mechanism 300 includes: a support frame 301 for keeping the drilling mechanism 100 vertical to the ground; one end of the 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 a 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 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. A torsion spring 1 404 is fixedly connected to the connection between the two ends of the two helical tooth columns 403 and the rotating ring 402. The filling and pressing mechanism 400 includes: a positioning seat 412 fixedly connected to the inner wall of the sliding plate 411, and rotatably connected to the one-way rotating plate 413, and a torsion spring 2 is fixedly connected to the connection between the one-way rotating plate 413 and the positioning seat 412; a baffle 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 discharge shells 415 are provided, which are fixedly connected to the inside of the drill tube 105 in an annular shape at equal distances, and the sliding plate 411 is slidably connected to the soil discharge shell 415; the one-way rotating plate 416 is rotatably connected to the inner wall of the soil discharge shell 415, and a torsion spring 3 is fixedly provided at the connection with the soil discharge shell 415, and a baffle 2 in contact with it is provided on the top of the one-way rotating plate 416; five compacting plates 417 are provided, all of which are fixedly connected to the bottom end of the sliding plate 411.

[0027] In specific implementation, when negative pressure is generated when drilling a hole in a soft soil layer, causing the hole wall to collapse or shrink in diameter, the drilling operation is first stopped, and then the clay in the filter tank 210 is pumped into the soil shell 207 by the gravel pump 209, or clay or stone is directly added to the soil shell 207, and then the driving motor 2 109, the bevel gear set 108 and the auger 1 107 are rotated counterclockwise, so that the clay and stone in the soil shell 207 are transported to the bottom of the rotating cylinder 104, and then the clay is respectively The driving cylinder 401 is driven to rotate by the connecting shaft 112, and then the driving cylinder 401 can drive the rotating ring 402 and the two oblique tooth columns 403 on the outer wall to rotate counterclockwise at the same time, so that the two oblique tooth columns 403 can keep the engagement with the clamping teeth 406 on the inner wall of the rotating cylinder 405, so that the rotating cylinder 405 can be driven to rotate synchronously, so that the lifting ring 409 can be driven to reciprocate along the rotating cylinder 405. The five connecting arms 410 can simultaneously drive the five sliding The plate 411 slides downward, and the clay is squeezed into the soil discharge shell 415 and then flows under the one-way rotating plate 413. When the sliding plate 411 descends, it drives the one-way rotating plate 413 to descend together. Under the action of the blocking bar 414, the one-way rotating plate 413 can be blocked from rotating upward. The 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 to the bottom of the drill tube 105. When the clay is discharged to the bottom of the hole, the outside air is discharged into the space between the drill bit 106 and the bottom of the hole, thereby reducing Small negative pressure strength can avoid further shrinkage of the hole wall. The sliding plate 411 continues to press down to compact the clay layer by layer through the compaction plate 417. When the sliding plate 411 rises, it is blocked by the one-way rotating plate 416 to prevent the soil from backfilling into the soil shell 415. Therefore, the collapsed hole wall can be backfilled and compacted with clay in the first time to prevent the increase of the collapsed area. The filling and pressing mechanism 400 can be used to perform emergency treatment when the hole wall collapses and the hole wall shrinks, ensuring that the drilling construction will be resumed as soon as possible.

[0028] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes 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).

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 arranged 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 drilling mechanism (100) comprises: The 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); The 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 axis of the auger (111).

4. A bored pile drilling device for a pump station according to claim 3, characterized in that: 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 position 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 distances in an annular shape. The nozzles (205) are in communication with the inside of the cavity ring (204); The driving block (206) is fixedly connected to the inner wall of the cavity ring (204), and the driving block (206) is slidably embedded and connected to the reciprocating screw rod (203).

5. A bored pile drilling device for a pump station according to claim 4, characterized in that: 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.

6. A bored pile drilling device for a pump station according to claim 4, characterized in that: 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).

7. A bored pile drilling device for a pump station according to claim 4, 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).

8. A bored pile drilling device for a pump station according to claim 7, 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).

9. A bored pile drilling device for a pump station according to claim 7, 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) at equal intervals in an annular manner. 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).

10. The construction process of a bored pile drilling device for a pump station according to claim 9, 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) can extract the mud and slag in the soil shell (207), and then discharge the mud and slag into the filter tank (210) through the curved 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, and can drive the cavity ring (204) to slide back and forth in the vertical direction 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 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) can 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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