A kind of bored pile drilling equipment and bored pile construction technology

Abstract

The present invention relates to the technical field of bored pile drilling, and discloses a bored pile drilling device and a bored pile construction process, comprising a drilling machine body, an adjusting platform installed on the side of the drilling machine body, a driving mechanism installed on the outside of the adjusting platform, an extension pipe provided on the driving mechanism, and a drilling mechanism connected at one end of the extension pipe. The present invention injects mud into the borehole after drilling to a certain depth, and connects the top of the extension pipe to a mud pump, and extracts a mixture of mud and drill cuttings while drilling. When the mixture of mud and drill cuttings passes through the drilling mechanism, the inside of the drilling mechanism crushes the larger drill cuttings to prevent the drill cuttings from clogging the drilling mechanism and the extension pipe during the mud extraction process, and can effectively prevent the drill cuttings from clogging the drilling mechanism and the extension pipe while cleaning the drill cuttings in the borehole through reverse circulation, thereby significantly improving the cleaning efficiency and cleaning quality of the drill cuttings in the borehole.

Description

Technical Field

[0001] The invention relates to the technical field of bored pile drilling, in particular to a bored pile drilling device and a bored pile construction process. Background Art

[0002] A bored pile is a pile made by pouring concrete or reinforced concrete in place. The bored pile construction technology is a concrete technology with low construction cost, simple construction operation, no vibration, noise and soil squeezing effect. The bored pile construction technology has been widely used in the field of construction engineering. The bored pile has high safety and strong stability, that is, the concrete slurry penetrates deep into the soil layer, which can make the soil layer and the bored pile body closely combined, thereby making the foundation more solid and reliable. At the same time, the bored pile can effectively control the foundation settlement, thereby compacting the soil layer. The bored pile has a good penetration, compaction and splitting effect on the soil layer, and the interaction between the three can make the soil layer more stable. The bored pile construction technology is a concrete technology with low construction cost, simple construction operation, no vibration, noise and soil squeezing effect. The bored pile construction technology has been widely used in the field of construction engineering.

[0003] Chinese patent CN113685142B discloses a bored pile construction device and method thereof, a bored pile construction device, which includes a device body, a drill rod, and a drill bit body. A drill cover is installed at the bottom of the drill bit body. A cleaning component for cleaning the inner wall of the drill bit body is installed in the drill bit body. The cleaning component includes a scraper ring slidably arranged in the drill bit body, and the outer peripheral surface of the scraper ring contacts the inner wall of the drill bit body. A driving component for driving the scraper ring to move is installed in the drill bit body. A bored pile construction method, which includes the following steps: moving the device body to the vicinity of the borehole; moving the drill rod horizontally to the top of the borehole; inserting the drill bit body into the borehole; after the drill bit body is used, moving the drill rod horizontally to an open space; opening the drill cover, and the cleaning component can clean the drill bit body and the borehole; injecting concrete into the borehole to form a pile.

[0004] In the above patents and the prior art, the drill cuttings in the borehole are cleaned through the positive circulation and reverse circulation of the mud during the drilling process. The positive circulation injects mud from the drill pipe into the borehole, and then the mud in the borehole is pumped out, and the drill cuttings are brought out by the mud. The overall process is relatively stable, but the work efficiency is low, and some drill cuttings with higher density are difficult to clean out. The reverse circulation directly injects mud into the borehole, and then the mud is pumped out through the drill pipe, and the drill cuttings are brought out by the mud. The cleaning efficiency is relatively high, but larger drill cuttings may clog the inside of the drill pipe during the cleaning process. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a bored cast-in-place pile drilling device and a bored cast-in-place pile construction process.

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

[0007] A bored pile drilling device and bored pile construction process, comprising a drilling machine body, an adjustment platform is installed on the side of the drilling machine body, a driving mechanism is installed outside the adjustment platform, the driving mechanism is provided with an extension tube, one end of the extension tube is connected to the drilling mechanism;

[0008] The device comprises a plurality of extension tubes, the extension tubes can be connected to each other, and the adjustment platform and the driving mechanism can limit the positions of the extension tubes;

[0009] The drilling machine body can move and adjust the position and angle of the adjustment platform, the driving mechanism can move up and down outside the adjustment platform, the driving mechanism can drive the extension tube to rotate, and when the driving mechanism descends, it can drive the extension tube to descend, the drilling mechanism can be connected to one end of the extension tube, and when the extension tube rotates, it can drive the drilling mechanism to rotate to perform drilling operations, the drilling mechanism includes a drill bit connecting tube, a construction drill bit is arranged at the bottom of the drill bit connecting tube, and a lower crushing disk and an upper crushing disk are arranged inside the construction drill bit;

[0010] Preferably, the adjustment platform comprises a support frame, a hydraulic rod is installed on the outside of the support frame, a movable end of the hydraulic rod is connected to a lifting platform, the lifting platform is installed on the outside of the support frame, a fixed platform is installed on the top of the support frame, and a limit plate is installed inside the fixed platform;

[0011] The limiting plate can limit the direction of the extension tube, and the hydraulic rod can drive the lifting platform to move up and down.

[0012] Preferably, the driving mechanism comprises a motor compartment and a driving turntable, both of which are installed on the top of the lifting platform, a driving motor is installed inside the motor compartment, and an output end of the driving motor is connected to a motor gear;

[0013] When the driving motor rotates, it can drive the motor gear to rotate on the lifting platform. When the motor gear rotates, it can drive the driving turntable to rotate on the lifting platform. The motor compartment can move up and down outside the support frame.

[0014] Preferably, the driving turntable comprises a turntable body, the turntable body is mounted on the lifting platform, a turntable gear is mounted on the outside of the turntable body, the inner side wall of the turntable body is connected to one end of the telescopic column and the block spring, and the other end of the telescopic column and the block spring is connected to the pipeline block;

[0015] A plurality of pipeline clamps are installed inside the turntable body, and the plurality of pipeline clamps are equidistantly distributed around the circumference. The upper half of the inner side of the pipeline clamp is an arc-shaped structure. The plurality of pipeline clamps can clamp the extension tube through the clamp spring. When the motor gear rotates, the turntable body can be driven to rotate through the turntable gear. When the turntable body rotates, the extension tube is driven to rotate through the pipeline clamp.

[0016] Preferably, a communication port is provided inside the lower crushing disk, a drill bit inner tube is provided inside the drill bit connecting tube, a crushing disk fixing rod is installed inside the drill bit inner tube, and the bottom of the crushing disk fixing rod is connected to the upper crushing disk;

[0017] The top of the drill bit connecting pipe is connected to the extension pipe. When the extension pipe rotates, it can drive the drill bit connecting pipe to rotate. When the drill bit connecting pipe rotates, it can drive the construction drill bit to rotate to perform drilling operations.

[0018] Preferably, the upper surface of the lower pulverizing disk is a convex structure, the lower surface of the upper pulverizing disk is a concave structure, and the concave angle of the lower surface of the upper pulverizing disk is greater than the convex angle of the upper surface of the lower pulverizing disk, the distance between the lower pulverizing disk and the upper pulverizing disk gradually decreases from the inside to the outside, and the diameter of the upper pulverizing disk is smaller than the diameter of the lower pulverizing disk;

[0019] When the construction drill bit rotates, it can drive the lower crushing disk to rotate synchronously. When mud enters the inner tube of the drill bit through the connecting port, larger drill cuttings remain between the lower crushing disk and the upper crushing disk. During the drilling process, the lower crushing disk rotates to crush the drill cuttings.

[0020] Preferably, the extension tube comprises an external transmission tube, an internal connecting tube is arranged inside the external transmission tube, a central connecting rod is installed inside the internal connecting tube, and a first connector and a second connector are respectively arranged at both ends of the external transmission tube;

[0021] The exterior of the external transmission tube is provided with vertical stripe-shaped protrusions, and the plurality of extension tubes are connected via a first connector and a second connector.

[0022] Preferably, the first connector includes a connection block and a threaded column, the connection block is mounted on the central connection rod, the threaded column is arranged outside the external transmission tube, and an elastic column is arranged on the top of the threaded column;

[0023] The second connector includes a threaded sleeve and a connecting slot. The threaded sleeve is installed on the outside of the external transmission tube. A connecting jack is provided inside the threaded sleeve. A connecting slot is provided outside the central connecting rod.

[0024] Preferably, the central connecting rods are connected by connecting blocks and connecting slots, and the central connecting rods are fixed inside the internal connecting tube by connecting blocks and connecting slots;

[0025] The outside of the threaded column is connected to the internal thread of the threaded sleeve. The top of the elastic column is a circular structure. During the rotation of the threaded column, the elastic column can be inserted into the connecting hole. When the depth is shallow, the elastic column will be squeezed and contracted. The threaded column continues to rotate, and when the depth is sufficient, the elastic column is stuck into the inside of the connecting hole.

[0026] The invention also discloses a construction process for bored cast-in-place piles, using the above-mentioned bored cast-in-place pile drilling equipment.

[0027] Compared with the prior art, the present invention provides a bored pile drilling device and a bored pile construction process, which has the following beneficial effects:

[0028] 1. In this type of bored pile drilling equipment, the driving mechanism can drive the extension tube to rotate. When the extension tube on the driving mechanism rotates, it can be connected to the extension tube on the adjusting table. After the connection is completed, the two extension tubes rotate synchronously. When the extension tube rotates, it can also drive the drilling mechanism to rotate, and the adjusting table can drive the driving mechanism to move downward. When the driving mechanism moves downward, it can drive the drilling mechanism to move downward through the extension tube to perform drilling operations. After drilling to a certain depth, mud is injected into the borehole, and the top of the extension tube is connected to the mud pump. While the drilling operation is being performed, a mixture of mud and drill cuttings is extracted. When the mixture of mud and drill cuttings passes through the drilling mechanism, larger drill cuttings are crushed inside the drilling mechanism to prevent the drill cuttings from clogging the drilling mechanism and the extension tube during the mud extraction process. While the drill cuttings in the borehole are cleaned by reverse circulation, the drill cuttings can be effectively prevented from clogging the drilling mechanism and the extension tube, thereby significantly improving the cleaning efficiency and cleaning quality of the drill cuttings in the borehole.

[0029] 2. This type of bored pile drilling equipment can drive the motor gear to rotate on the lifting platform when the driving motor rotates, and can drive the turntable body to rotate on the lifting platform through the turntable gear when the motor gear rotates. When the lifting platform drives the motor gear and the driving turntable to move up and down, it can also drive the motor bin to move up and down outside the support frame. When the turntable body rotates, it can drive the extension pipe to rotate through the pipeline block. When the lifting platform drives the driving turntable to move upward, the arc-shaped structure on the upper part of the pipeline block can shrink the pipeline block, so that the driving turntable passes through the threaded sleeve outside the extension pipe. When the lifting platform drives the driving turntable to descend, the lower half of the pipeline block clamps the extension along the external threaded sleeve, and the extension pipe is driven to descend and rotate by the descending and rotation of the driving turntable, thereby driving the drilling mechanism to perform drilling operations, and the drilling mechanism is driven by the driving turntable to perform drilling operations, and the splicing of the extension pipe can be completed during the movement, so as to avoid pausing the construction during the work to adjust the length of the drill rod, thereby significantly improving the work efficiency.

[0030] 3. For this type of bored pile drilling equipment, the driving turntable can drive the extension tube to rotate during operation, and the vertical stripes on the outside of the external transmission tube can increase the friction force when the driving turntable drives the external transmission tube to rotate. When the extension tube rotates at the top, the threaded column rotates synchronously, and is connected with the threaded sleeve at the bottom of the extension tube in the upper limit plate when the threaded column rotates. During the rotation of the threaded column, the elastic column can be inserted into the connecting socket. When the depth is shallow, the elastic column will be squeezed and contracted, and the threaded column continues to rotate. After the depth is met, the elastic column is stuck to the inside of the connecting socket. During the connection of the two external transmission tubes, the connecting card block is inserted into the connecting card slot. Since the connecting card slot is an inclined structure, during the plug-in process, even if the angle of the connecting card block does not match the angle of the connecting card slot, the two center connecting rods can be slightly offset, thereby completing the connection of the two center connecting rods. By connecting the external transmission tube and the center connecting rod separately, the integrity of each external transmission tube and the center connecting rod is guaranteed, and the internal connecting tube is prevented from rotating when the external transmission tube rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is one of the three-dimensional structural schematic diagrams of a bored pile drilling device of the present invention;

[0032] Figure 2 This is a second schematic diagram of the three-dimensional structure of a bored pile drilling device according to the present invention;

[0033] Figure 3 It is a schematic diagram of the internal structure of an adjustment table of a hole-forming cast-in-place pile drilling device of the present invention;

[0034] Figure 4 This is a schematic diagram of the internal structure of a driving turntable of a hole-forming cast-in-place pile drilling device of the present invention;

[0035] Figure 5 It is a schematic diagram of the cross-section structure of a drilling mechanism of a bored pile drilling device of the present invention;

[0036] Figure 6 It is a schematic diagram of the three-dimensional structure of a drilling mechanism of a bored pile drilling device of the present invention;

[0037] Figure 7 It is a schematic structural diagram of an upper crushing plate and a lower crushing plate of a hole-forming cast-in-place pile drilling device of the present invention;

[0038] Figure 8 It is a schematic diagram of the three-dimensional structure of an extension pipe of a hole-forming cast-in-place pile drilling device of the present invention;

[0039] Fig. 9 It is a schematic diagram of the three-dimensional structure of a first connector of a hole-forming cast-in-place pile drilling device according to the present invention;

[0040] Fig.10 The present invention is a schematic diagram of the three-dimensional structure of a second connector of a bored pile drilling device.

[0041] In the figure: 1. drilling machine body; 2. adjustment table; 21. support frame; 22. hydraulic rod; 23. lifting platform; 24. fixed platform; 25. limit plate; 3. driving mechanism; 31. motor compartment; 32. driving motor; 33. motor gear; 34. driving turntable; 341. turntable body; 342. turntable gear; 343. telescopic column; 344. block spring; 345. pipe block; 4. drilling mechanism; 41. drill bit connecting pipe; 42 , construction drill bit; 43, lower crushing disc; 44, connecting port; 45, drill bit inner tube; 46, crushing disc fixing rod; 47, upper crushing disc; 5, extension tube; 51, external transmission tube; 52, internal connecting tube; 53, center connecting rod; 54, first connecting head; 541, connecting block; 542, threaded column; 543, elastic column; 55, second connecting head; 551, threaded sleeve; 552, connecting socket; 553, connecting slot. DETAILED DESCRIPTION

[0042] 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.

[0043] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a bored cast-in-place pile drilling equipment and a bored cast-in-place pile construction process.

[0044] Embodiment 1:

[0045] See also Figure 1-Figure 10 A bored pile drilling device comprises a drilling machine body 1, an adjusting platform 2 is installed on the side of the drilling machine body 1, a driving mechanism 3 is installed outside the adjusting platform 2, the driving mechanism 3 is provided with an extension tube 5, and one end of the extension tube 5 is connected to a drilling mechanism 4;

[0046] The device includes a plurality of extension tubes 5, which can be connected to each other, and the adjustment platform 2 and the driving mechanism 3 can limit the position of the extension tubes 5;

[0047] The drilling machine body 1 can move and adjust the position and angle of the adjusting platform 2. The driving mechanism 3 can move up and down outside the adjusting platform 2. The driving mechanism 3 can drive the extension tube 5 to rotate, and when the driving mechanism 3 descends, it can drive the extension tube 5 to descend. The drilling mechanism 4 can be connected to one end of the extension tube 5, and when the extension tube 5 rotates, it can drive the drilling mechanism 4 to rotate to perform drilling operations.

[0048] When in use, first drive the drilling machine body 1 to the designated work location, adjust the angle of the adjustment platform 2 through the drilling machine body 1, and align the drilling mechanism 4 with the drilling point, then the driving mechanism 3 can drive the extension tube 5 to rotate, and the extension tube 5 on the driving mechanism 3 can be connected with the extension tube 5 on the adjustment platform 2 when rotating, and after the connection is completed, the two extension tubes 5 rotate synchronously, and the rotation of the extension tube 5 can also drive the drilling mechanism 4 to rotate, and the adjustment platform 2 can drive the driving mechanism 3 to move downward, and when the driving mechanism 3 moves downward, the drilling mechanism 4 can be driven by the extension tube 5 Move downward to perform drilling operations, inject mud into the borehole after the borehole has been drilled to a certain depth, and connect the top of the extension tube 5 to the mud pump. While the drilling operation is being performed, extract the mixture of mud and drill cuttings. When the mixture of mud and drill cuttings passes through the drilling mechanism 4, the inside of the drilling mechanism 4 crushes the larger drill cuttings to prevent the drill cuttings from clogging the drilling mechanism 4 and the extension tube 5 during the mud extraction process. While cleaning the drill cuttings in the borehole through reverse circulation, it can also effectively prevent the drill cuttings from clogging the drilling mechanism 4 and the extension tube 5, thereby significantly improving the cleaning efficiency and cleaning quality of the drill cuttings in the borehole.

[0049] For further information, please refer to Figure 2-Figure 3 The adjusting platform 2 includes a supporting frame 21, a hydraulic rod 22 is installed outside the supporting frame 21, a movable end of the hydraulic rod 22 is connected to a lifting platform 23, the lifting platform 23 is installed outside the supporting frame 21, a fixed platform 24 is installed on the top of the supporting frame 21, and a limiting plate 25 is installed inside the fixed platform 24;

[0050] The limiting plate 25 can limit the direction of the extension tube 5, and the hydraulic rod 22 can drive the lifting platform 23 to move up and down.

[0051] During operation, the hydraulic rod 22 drives the lifting platform 23 to move up and down on the support frame 21. When the lifting platform 23 moves up and down, it can drive the extension tube 5 to descend for drilling operations. The limit plate 25 (the structure inside the limit plate 25 is similar to the internal structure of the driving turntable 34) can limit the direction of the extension tube 5. The extension tube 5 naturally descends inside the limit plate 25 and contacts the top of the extension tube 5 below to facilitate connection between each extension tube 5. The extension tube 5 is driven to descend for drilling operations by the up and down movement of the lifting platform 23, so that extension tubes 5 of different lengths can be connected according to work needs. The cyclic operation of the lifting platform 23 can adapt to extension tubes 5 of different lengths for drilling operations, effectively improving the applicability of the equipment.

[0052] For further information, see Figure 3-Figure 4 The driving mechanism 3 includes a motor compartment 31 and a driving turntable 34, both of which are mounted on the top of the lifting platform 23, a driving motor 32 is mounted inside the motor compartment 31, and a motor gear 33 is connected to the output end of the driving motor 32;

[0053] When the driving motor 32 rotates, it can drive the motor gear 33 to rotate on the lifting platform 23 . When the motor gear 33 rotates, it can drive the driving turntable 34 to rotate on the lifting platform 23 . The motor compartment 31 can move up and down outside the support frame 21 .

[0054] The driving turntable 34 includes a turntable body 341, which is mounted on the lifting platform 23. A turntable gear 342 is mounted on the outside of the turntable body 341. The inner side wall of the turntable body 341 is connected to a telescopic column 343 and one end of a block spring 344. The other end of the telescopic column 343 and the block spring 344 is connected to a pipeline block 345.

[0055] A plurality of pipe clamps 345 are installed inside the turntable body 341. The plurality of pipe clamps 345 are equidistantly distributed around the circumference. The upper part of the inner side of the pipe clamps 345 is an arc-shaped structure. The plurality of pipe clamps 345 can clamp the extension tube 5 through the clamp spring 344. When the motor gear 33 rotates, the turntable body 341 can be driven to rotate through the turntable gear 342. When the turntable body 341 rotates, the extension tube 5 can be driven to rotate through the pipe clamps 345.

[0056] When working, the driving motor 32 can drive the motor gear 33 to rotate on the lifting platform 23 when it rotates. When the motor gear 33 rotates, it can drive the turntable body 341 to rotate on the lifting platform 23 through the turntable gear 342. When the lifting platform 23 drives the motor gear 33 and the driving turntable 34 to move up and down, it can also drive the motor bin 31 to move up and down outside the support frame 21. When the turntable body 341 rotates, it can drive the extension pipe 5 to rotate through the pipe block 345. When the lifting platform 23 drives the driving turntable 34 to move upward, the arc-shaped structure on the upper part of the pipe block 345 can make the pipe block 345 contracts, so that the driving turntable 34 passes through the threaded sleeve 551 on the outside of the extension tube 5. When the lifting platform 23 drives the driving turntable 34 to descend, the lower half of the pipeline clamp 345 clamps the threaded sleeve 551 on the outside of the extension tube 5. The extension tube 5 is driven to descend and rotate by driving the turntable 34, thereby driving the drilling mechanism 4 to perform drilling operations. The drilling mechanism 4 is driven by the driving turntable 34 to perform drilling operations, and the splicing of the extension tube 5 can be completed during the movement, thereby avoiding pausing the construction during the work to adjust the length of the drill rod, and significantly improving the work efficiency.

[0057] For further information, see Figure 5-Figure 7 The drilling mechanism 4 includes a drill bit connecting tube 41, a construction drill bit 42 is arranged at the bottom of the drill bit connecting tube 41, a lower crushing disc 43 is arranged inside the construction drill bit 42, a connecting port 44 is opened inside the lower crushing disc 43, a drill bit inner tube 45 is arranged inside the drill bit connecting tube 41, a crushing disc fixing rod 46 is installed inside the drill bit inner tube 45, and an upper crushing disc 47 is connected to the bottom of the crushing disc fixing rod 46;

[0058] The top of the drill bit connecting tube 41 is connected to the extension tube 5. When the extension tube 5 rotates, it can drive the drill bit connecting tube 41 to rotate. When the drill bit connecting tube 41 rotates, it can drive the construction drill bit 42 to rotate to perform drilling operations.

[0059] The upper surface of the lower pulverizing disk 43 is a convex structure, and the lower surface of the upper pulverizing disk 47 is a concave structure, and the concave angle of the lower surface of the upper pulverizing disk 47 is greater than the convex angle of the upper surface of the lower pulverizing disk 43. The distance between the lower pulverizing disk 43 and the upper pulverizing disk 47 gradually decreases from the inside to the outside, and the diameter of the upper pulverizing disk 47 is smaller than the diameter of the lower pulverizing disk 43.

[0060] When the construction drill bit 42 rotates, it can drive the lower crushing disk 43 to rotate synchronously. When the mud enters the drill bit inner tube 45 through the connecting port 44, the larger drill cuttings remain between the lower crushing disk 43 and the upper crushing disk 47. During the drilling process, the lower crushing disk 43 rotates to crush the drill cuttings.

[0061] During operation, the top of the drill bit connecting tube 41 (the structure of the drill bit connecting tube 41 is similar to that of the first connecting head 54) is connected to the extension tube 5. When the extension tube 5 rotates, it can drive the drill bit connecting tube 41 to rotate, and the construction drill bit 42 rotates to perform the drilling operation. When the construction drill bit 42 rotates, it can drive the lower crushing disk 43 to rotate synchronously. When the mud enters the drill bit inner tube 45 through the connecting port 44, the larger drill cuttings are left between the lower crushing disk 43 and the upper crushing disk 47. The crushing disc 43 rotates to crush the drill cuttings. The raised structure of the lower crushing disc 43 can prevent the drill cuttings from falling back into the borehole, and the change in the distance between the upper crushing disc 47 and the lower crushing disc 43 can gradually crush the drill cuttings. After the mud enters from the connecting port 44, it passes through the upper crushing disc 47 and the lower crushing disc 43 to crush the drill cuttings, and then enters the drill bit inner tube 45 from the outside of the upper crushing disc 47, thereby effectively preventing the drill cuttings from clogging the drill bit inner tube 45 during the mud extraction process.

[0062] For further information, see Figure 9-10 The extension tube 5 includes an external transmission tube 51, an internal connecting tube 52 is arranged inside the external transmission tube 51, a central connecting rod 53 is installed inside the internal connecting tube 52, and a first connector 54 and a second connector 55 are respectively arranged at both ends of the external transmission tube 51;

[0063] The exterior of the external transmission tube 51 is provided with vertical stripe-shaped protrusions, and the plurality of extension tubes 5 are connected via a first connector 54 and a second connector 55 .

[0064] The first connector 54 includes a connection block 541 and a threaded column 542. The connection block 541 is installed on the central connection rod 53. The threaded column 542 is arranged outside the external transmission tube 51. An elastic column 543 is arranged on the top of the threaded column 542.

[0065] The second connector 55 includes a threaded sleeve 551 and a connecting slot 553 . The threaded sleeve 551 is installed outside the external transmission tube 51 . A connecting jack 552 is provided inside the threaded sleeve 551 . A connecting slot 553 is provided outside the central connecting rod 53 .

[0066] The central connecting rods 53 are connected by connecting blocks 541 and connecting slots 553, and the central connecting rods 53 are fixed inside the internal connecting tube 52 by connecting blocks 541 and connecting slots 553;

[0067] The outside of the threaded column 542 is connected to the internal thread of the threaded sleeve 551. The top of the elastic column 543 is a circular structure. During the rotation of the threaded column 542, the elastic column 543 can be inserted into the connecting hole 552. When the depth is shallow, the elastic column 543 will be squeezed and contracted. The threaded column 542 continues to rotate. After the depth is satisfied, the elastic column 543 is stuck into the inside of the connecting hole 552.

[0068] When working, the driving turntable 34 can drive the extension tube 5 to rotate, and the vertical stripes on the outside of the external transmission tube 51 can increase the friction force when the driving turntable 34 drives the external transmission tube 51 to rotate. When the extension tube 5 rotates at the top, the threaded column 542 rotates synchronously, and when the threaded column 542 rotates, it is connected with the threaded sleeve 551 at the bottom of the extension tube 5 in the upper limit plate 25. During the rotation of the threaded column 542, the elastic column 543 can be inserted into the connecting hole 552. When the depth is shallow, the elastic column 543 will be squeezed and contracted, and the threaded column 542 continues to rotate. After the depth meets the requirements, the elastic column 543 is stuck. To the inside of the connecting socket 552, the connecting block 541 is inserted into the connecting slot 553 during the connection process of the two external transmission tubes 51. Since the connecting slot is an inclined structure, during the plug-in process, even if the angles of the connecting block 541 and the connecting slot 553 do not match, the two center connecting rods 53 can be slightly offset, thereby completing the connection of the two center connecting rods 53. By connecting the external transmission tubes 51 and the center connecting rods 53 separately, the integrity of each external transmission tube 51 and the center connecting rod 53 is ensured, thereby preventing the internal connecting tube 52 from rotating when the external transmission tube 51 rotates.

[0069] Embodiment 2:

[0070] A construction process for bored cast-in-place piles, using a bored cast-in-place pile drilling device as described in Example 1, comprises the following steps:

[0071] S1, driving the drilling machine 1 to the designated work location, and adjusting the drilling angle and position through the drilling machine 1;

[0072] S2, after the adjustment is completed, the extension tube 5 is driven to rotate by the driving mechanism 3;

[0073] S3, when the extension tube 5 rotates, it drives the drilling mechanism 4 to rotate;

[0074] S4, the extension tube 5 on the driving mechanism 3 automatically connects with the extension tube on the adjusting platform 2 when rotating;

[0075] S5. During reverse circulation mud extraction, larger drill cuttings are crushed in the drilling mechanism 4.

[0076] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bored pile drilling device, comprising a drilling machine body (1), characterized in that: An adjustment platform (2) is installed on the side of the drilling machine body (1); a driving mechanism (3) is installed outside the adjustment platform (2); an extension tube (5) is provided on one side of the driving mechanism (3); and a drilling mechanism (4) is connected to one end of the extension tube (5); The device comprises a plurality of extension tubes (5), wherein the extension tubes (5) can be spliced ​​with each other, and the adjustment platform (2) and the driving mechanism (3) can limit the positions of the extension tubes (5); The drilling machine body (1) is capable of moving and adjusting the position and angle of the adjustment platform (2); the driving mechanism (3) is capable of moving up and down outside the adjustment platform (2); the driving mechanism (3) is capable of driving the extension tube (5) to rotate, and when the driving mechanism (3) descends, it is capable of driving the extension tube (5) to descend; the drilling mechanism (4) is capable of being connected to one end of the extension tube (5); when the extension tube (5) rotates, it is capable of driving the drilling mechanism (4) to rotate to perform drilling operations; the drilling mechanism (4) comprises a drill bit connecting tube (41); a construction drill bit (42) is disposed at the bottom of the drill bit connecting tube (41); and a lower crushing disc (43) and an upper crushing disc (47) are disposed inside the construction drill bit (42); A communication port (44) is provided inside the lower pulverizing disk (43); a drill bit inner tube (45) is provided inside the drill bit connecting tube (41); a pulverizing disk fixing rod (46) is installed inside the drill bit inner tube (45); and the bottom of the pulverizing disk fixing rod (46) is connected to the upper pulverizing disk (47); The top of the drill bit connecting tube (41) is connected to the extension tube (5), and when the extension tube (5) rotates, it can drive the drill bit connecting tube (41) to rotate, and when the drill bit connecting tube (41) rotates, it can drive the construction drill bit (42) to rotate to perform drilling operations; The extension tube (5) comprises an external transmission tube (51), an internal connecting tube (52) is arranged inside the external transmission tube (51), a central connecting rod (53) is installed inside the internal connecting tube (52), and a first connecting head (54) and a second connecting head (55) are respectively arranged at two ends of the external transmission tube (51); The external transmission tube (51) is provided with vertical stripe-shaped protrusions on the outside, and the plurality of extension tubes (5) are connected via a first connector (54) and a second connector (55); The first connector (54) comprises a connecting block (541) and a threaded column (542), wherein the connecting block (541) is mounted on the central connecting rod (53), the threaded column (542) is arranged outside the external transmission tube (51), and an elastic column (543) is arranged on the top of the threaded column (542); The second connector (55) comprises a threaded sleeve (551) and a connection slot (553); the threaded sleeve (551) is mounted on the outside of the external transmission tube (51); a connection socket (552) is provided inside the threaded sleeve (551); and a connection slot (553) is provided outside the central connecting rod (53); The central connecting rods (53) are plugged into each other via a connecting block (541) and a connecting slot (553), and the central connecting rod (53) is fixed inside the internal connecting tube (52) via the connecting block (541) and the connecting slot (553); The outside of the threaded column (542) is threadably connected to the inside of the threaded sleeve (551); the top of the elastic column (543) is a circular structure; during the rotation of the threaded column (542), the elastic column (543) can be inserted into the inside of the connecting hole (552); when the depth is shallow, the elastic column (543) will be squeezed and contracted; the threaded column (542) continues to rotate; when the depth is sufficient, the elastic column (543) is stuck into the inside of the connecting hole (552).

2. The bored pile drilling equipment according to claim 1, characterized in that: The adjustment platform (2) comprises a support frame (21), a hydraulic rod (22) is installed outside the support frame (21), a movable end of the hydraulic rod (22) is connected to a lifting platform (23), the lifting platform (23) is installed outside the support frame (21), a fixed platform (24) is installed at the top end of the support frame (21), and a limit plate (25) is installed inside the fixed platform (24); The limiting plate (25) can limit the direction of the extension tube (5), and the hydraulic rod (22) can drive the lifting platform (23) to move up and down.

3. A bored pile drilling device according to claim 2, characterized in that: The driving mechanism (3) comprises a motor compartment (31) and a driving turntable (34), wherein the motor compartment (31) and the driving turntable (34) are both installed on the top of the lifting platform (23), a driving motor (32) is installed inside the motor compartment (31), and an output end of the driving motor (32) is connected to a motor gear (33); When the driving motor (32) rotates, it can drive the motor gear (33) to rotate on the lifting platform (23); when the motor gear (33) rotates, it can drive the driving turntable (34) to rotate on the lifting platform (23); and the motor compartment (31) can move up and down outside the support frame (21).

4. The bored pile drilling equipment according to claim 3, characterized in that: The driving turntable (34) comprises a turntable body (341), the turntable body (341) being mounted on the lifting platform (23), a turntable gear (342) being mounted on the outside of the turntable body (341), an inner side wall of the turntable body (341) being connected to one end of a telescopic column (343) and a block spring (344), and the other end of the telescopic column (343) and the block spring (344) being connected to a pipeline block (345); A plurality of pipeline clamping blocks (345) are installed inside the turntable body (341); the plurality of pipeline clamping blocks (345) are equidistantly distributed around the circumference; the upper half of the inner side of the pipeline clamping blocks (345) is an arc-shaped structure; the plurality of pipeline clamping blocks (345) can clamp the extension tube (5) via a clamping block spring (344); when the motor gear (33) rotates, the turntable body (341) can be driven to rotate via the turntable gear (342); and when the turntable body (341) rotates, the extension tube (5) is driven to rotate via the pipeline clamping blocks (345).

5. The bored pile drilling equipment according to claim 4, characterized in that: The upper surface of the lower pulverizing disk (43) is a convex structure, and the lower surface of the upper pulverizing disk (47) is a concave structure, and the concave angle of the lower surface of the upper pulverizing disk (47) is greater than the convex angle of the upper surface of the lower pulverizing disk (43), the distance between the lower pulverizing disk (43) and the upper pulverizing disk (47) gradually decreases from the inside to the outside, and the diameter of the upper pulverizing disk (47) is smaller than the diameter of the lower pulverizing disk (43); When the construction drill bit (42) rotates, it can drive the lower crushing disc (43) to rotate synchronously. When mud enters the drill bit inner tube (45) through the connecting port (44), larger drill cuttings remain between the lower crushing disc (43) and the upper crushing disc (47). During the drilling process, the lower crushing disc (43) rotates to crush the drill cuttings.

6. A construction process for bored cast-in-place piles, using a bored cast-in-place pile drilling device as described in any one of claims 1 to 5.

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