A pile drilling device for foundation construction

Abstract

The present invention relates to the technical field of pile driving equipment, and specifically discloses a pile drilling equipment for foundation construction, comprising: a drill rod, a support system, a power system and a compacting component, wherein the drill rod comprises a rotating shaft, a drill bit and an auger blade, the drill bit is arranged at the bottom end of the rotating shaft, the auger blade is arranged at the peripheral side of the rotating shaft, the support system is used to support the drill rod, the power system is used to provide power for the drill rod, and the compacting component comprises a compacting cylinder and a diverter plate, the compacting cylinder is arranged at the peripheral side of the auger blade, the auger blade forms a spiral channel in the compacting cylinder, a plurality of diverter ports distributed at intervals are arranged on the compacting cylinder, a diverter plate is arranged at each diverter port, the diverter plate is rotatably matched with the compacting cylinder, the diverter plate can extend into the spiral channel, and the amount of diverted soil can be adjusted according to the compaction degree of the soil layer; the pile drilling equipment for foundation construction of the present invention can automatically divert soil according to the looseness of the soil layer, and compact the borehole wall.

Description

Technical Field

[0001] The invention relates to the technical field of pile driving equipment, and in particular to pile drilling equipment for foundation construction. Background Art

[0002] In the foundation construction of building projects, special drilling equipment is used to drill pile holes of a certain diameter and depth in the foundation. Then, a pile foundation is formed by placing a steel cage in the pile hole and pouring concrete, so that the load of the building is transferred to a deeper and more stable stratum through the piles to improve the bearing capacity and stability of the foundation.

[0003] Drilling equipment includes auger drills, rotary drills and impact drills. In related technologies, auger drills are usually used to construct clay, silt, fill and other soils above the groundwater level. The auger drill includes a drill bit and a power unit. The power unit drives the drill bit to rotate and drill into the formation. The soil cut off during the drilling process is transported to the ground along the spiral blades of the drill bit. The auger drill has the advantage of fast drilling speed.

[0004] A Chinese patent application with application publication number CN117248828A discloses a pile drilling device for building foundation construction, which includes a pile drilling device for building foundation construction, including a lifting platform, a vertical joint component is connected to the top of the lifting platform, the lifting platform is connected to the pile driver body through the vertical joint component, the lifting platform is swung and straightened in a spherical hoop sleeve by the spherical axis of the vertical joint component; a lifting sliding seat is arranged inside the lifting platform, and the lifting sliding seat has a pile drilling component built in, a hard soil layer crushing groove is opened at the bottom of the pile drill rod of the pile drilling component, and a hard soil layer crushing component for crushing the hard soil layer is arranged inside the hard soil layer crushing groove, so that the spiral blades wound around the pile drill rod break through the hard soil layer; a soil compacting component is sleeved on the pile drill rod, and the vibration on the pile drill rod enters the soil layer through the soil compacting vibrator of the soil compacting component, so as to improve the stability of the soil structure around the pile drilling hole.

[0005] In the above patent application, the first hydraulic cylinder is controlled to pull the locking plate to move away from the spherical shaft. Under the action of gravity, the lifting platform drives the spherical shaft to rotate in the spherical hoop through the swing shaft until the lifting platform is in a vertical state. By quickly adjusting the verticality of the lifting platform, it is beneficial to control the verticality of the pile drilling hole relative to the construction ground of the building, thereby reducing the frequency of secondary drilling to a large extent. The pile drilling hole after adjustment has a high verticality, which is beneficial to ensure the stability of the pile foundation of the building.

[0006] However, since underground soil layers are generally layered, the softness of soil layers at different depths is different, and there is a certain distance between the drill bit and the soil compacting component in the above-mentioned patent application, there will be errors in judging the softness of the soil by the drill bit, and the contact area between the vibrator and the soil is small. There is a phenomenon that the soil is not compacted by the vibrator and is transported to the top of the drill rod along with the auger blades. This phenomenon will cause the soil around the borehole to remain in a loose state. Summary of the invention

[0007] The present invention provides a pile drilling device for foundation construction, aiming to solve the problem in the related art that the soil around the borehole is in a loose state, the soil easily falls into the borehole, resulting in a large error between the actual depth of the borehole and the expected depth.

[0008] The pile drilling equipment for foundation construction of the present invention comprises: a drill rod, a support system, a power system and a compaction component;

[0009] The drill rod comprises a rotating shaft, a drill bit and an auger blade, wherein the drill bit is arranged at the bottom end of the rotating shaft, and the auger blade is arranged at the peripheral side of the rotating shaft;

[0010] The support system is used to support the drill pipe;

[0011] The power system is used to provide power for the drill pipe;

[0012] The compaction assembly includes a compaction cylinder and a diverter plate. The compaction cylinder is arranged on the outer peripheral side of the auger blade. The auger blade forms a spiral channel in the compaction cylinder. The compaction cylinder is provided with a plurality of diverter ports distributed at intervals. Each of the diverter ports is provided with a diverter plate. The diverter plate is rotatably matched with the compaction cylinder. The diverter plate can extend into the spiral channel and adjust the amount of diverted soil according to the compaction degree of the soil layer.

[0013] The beneficial effect is that if the soil is solid during the drilling process and there is no gap between the compacting cylinder and the wall of the borehole, the wall of the hole will press the diverter plate onto the compacting cylinder and make the outer wall of the diverter plate flush with the side wall of the compacting cylinder. The diverter plate can close the diversion port, and the soil drilled out of the borehole moves upward along the spiral channel and is finally discharged from the top of the compacting cylinder. If the soil is relatively loose, the diverter plate rotates relative to the compacting cylinder, and the diverter plate extends into the spiral channel and diverts the soil in the spiral channel. The looser the soil, the greater the rotation amplitude of the diverter plate, and the more soil is diverted. The soil diverted by the diverter plate moves along the diverter plate and is discharged from the diversion port of the compacting cylinder and enters between the hole wall and the compacting cylinder. The compacting cylinder can squeeze this part of the soil until the side wall of the borehole is compacted. When the side wall of the borehole is compacted, the diverter plate is pressed on the compacting cylinder under the squeezing of the soil, thereby closing the diversion port.

[0014] Preferably, the diverter plate includes a first arc plate, a second arc plate and a connecting shaft, the connecting shaft is located at the connection between the first arc plate and the second arc plate, a first torsion spring is provided on the connecting shaft, and the first torsion spring is connected to the tamping cylinder.

[0015] The effect is that when the first torsion spring is in a natural state, the first arc plate extends into the spiral channel and the second arc plate expands outward. If the wall of the drilled hole is relatively tight during the drilling process, the diverter plate will be squeezed in the diverter port under the pressure of the drilled hole wall. At this time, the outer wall of the diverter plate is flush with the tamping cylinder, and the first torsion spring is in a tensioned state. When the wall of the drilled hole is relatively loose, the restoring force of the first torsion spring can push the diverter plate to rotate, thereby causing the first arc plate to extend into the spiral channel and the second arc plate to expand outward. At this time, the soil in the spiral channel will be diverted by the diverter plate.

[0016] Preferably, a baffle is provided at the diversion port, the thickness of the first arc plate is greater than that of the second arc plate, the baffle can fit with the second arc plate, the diversion plate is provided with an outer arc surface at the connecting shaft, and the end of the baffle abuts against the outer arc surface of the diversion plate.

[0017] The effect is that the baffle can prevent soil from clogging the diverter plate, causing the diverter plate to be unable to close the diverter port.

[0018] Preferably, the end of the second arc plate is rotatably fitted with a water outlet cylinder, the connecting shaft is a hollow structure, a connecting pipe is provided in the second arc plate, the water outlet cylinder is connected to the connecting shaft through the connecting pipe, a water inlet pipe is provided in the tamping cylinder, the connecting shaft is connected to the water inlet pipe, the water inlet pipe is connected to an external water source, the water outlet cylinder is connected to the second arc plate through a second torsion spring, and a water outlet hole is provided on the side wall of the water outlet cylinder.

[0019] The effect is that during the drilling process, the water outlet cylinder and the wall of the drill hole are frictionally matched, and the water outlet cylinder rotates under the action of friction, the second torsion spring accumulates force, and the water outlet hole is exposed. At this time, the water in the water outlet cylinder can flow out through the water outlet hole, thereby moistening the wall of the drill hole and improving the compactness of the wall of the drill hole.

[0020] Preferably, the end of the first arc plate is a truncated cone structure.

[0021] The effect is that the truncated cone structure at the end of the first arc plate can guide the soil to be evenly divided into two streams, thereby preventing the soil from piling up at the end of the diverter plate.

[0022] Preferably, the support system includes a chassis and a bracket, the chassis can be supported on the ground, the chassis is provided with a driving member and a driving shaft, the driving member is used to drive the driving shaft to rotate, a connecting rod is provided between the bracket and the chassis, one end of the connecting rod is rotatably connected to the bracket, and the other end thereof is fixedly connected to the driving shaft, and the drill rod is arranged on the bracket.

[0023] Preferably, a positioning ring is provided at the bottom of the bracket, the drill rod can pass through the positioning ring, and the positioning ring can be slidably matched with the tamping cylinder.

[0024] Preferably, the positioning ring is in a frustum shape, and the positioning ring can prevent soil discharged during drilling from accumulating at the hole mouth.

[0025] Preferably, the positioning ring is provided with a plurality of fixing rods spaced apart along its circumference, and the fixing rods can be inserted into the ground to fix the positioning ring.

[0026] Preferably, the end of the fixing rod has a tapered tip.

[0027] By adopting the above technical solution, the beneficial effects of the present invention are:

[0028] According to the pile drilling equipment for foundation construction of the embodiment of the present invention, if the soil is solid during the drilling process and there is no gap between the compacting cylinder and the wall of the drilled hole, the hole wall will press the diverter plate on the compacting cylinder and make the outer wall of the diverter plate flush with the side wall of the compacting cylinder. The diverter plate can close the diversion port, and the soil drilled out of the drilled hole moves upward along the spiral channel and is finally discharged from the top of the compacting cylinder. If the soil is relatively loose, the diverter plate rotates relative to the compacting cylinder, and the diverter plate extends into the spiral channel and diverts the soil in the spiral channel. The looser the soil, the greater the rotation amplitude of the diverter plate, and the more soil is diverted. The soil diverted by the diverter plate moves along the diverter plate and is discharged from the diversion port of the compacting cylinder and enters between the hole wall and the compacting cylinder. The compacting cylinder can squeeze this part of the soil until the side wall of the drilled hole is compacted. When the side wall of the drilled hole is compacted, the diverter plate is pressed on the compacting cylinder under the squeezing of the soil, thereby closing the diversion port. The pile drilling equipment for foundation construction of the present invention can automatically adjust the amount of diverted soil according to the looseness of the soil layer at the depth where the diverter plate is located, and compact this part of the soil through the squeezing of the tamping cylinder, thereby improving the compactness of the borehole wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of a pile drilling device for foundation construction according to an embodiment of the present invention.

[0030] Figure 2 2 is a cross-sectional view of a drill pipe according to an embodiment of the present invention.

[0031] Figure 3It is another cross-sectional view of the drill rod according to the embodiment of the present invention.

[0032] Figure 4 Schematic diagram of the structure of the manifold according to an embodiment of the present invention.

[0033] Figure 5 Schematic diagram of the positioning ring structure of an embodiment of the present invention.

[0034] Reference numerals:

[0035] 101. chassis; 1011. outrigger; 102. bracket; 103. connecting rod; 21. rotating shaft; 22. drill bit; 23. auger blade; 3. power system; 4. sliding seat; 51. tamping cylinder; 511. diversion port; 52. diversion plate; 521. connecting shaft; 522. first arc plate; 523. second arc plate; 524. first torsion spring; 6. baffle; 7. water outlet cylinder; 71. water outlet hole; 8. positioning ring; 81. inclined groove; 9. fixing rod. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0037] like Figures 1 to 5 As shown, the pile drilling equipment for foundation construction of the present invention comprises: a drill rod, a support system, a power system 3 and a compaction assembly. The support system is used to support the drill rod, the power system 3 is used to provide power for the drill rod, the drill rod is used to perform drilling operations, and the compaction assembly is used to compact the hole wall to prevent soil collapse.

[0038] Specifically, Figure 1 As shown, the support system includes a chassis 101 and a bracket 102. The chassis 101 is provided with a plurality of spaced-apart legs 1011, which are supported on the ground. The chassis 101 is also provided with a driving shaft and a driving member, and the driving shaft is rotatably matched with the chassis 101. The driving member is a motor, which is arranged inside the chassis 101. The output end of the driving member is meshed with the rotating shaft through a gear set, and the driving member drives the driving shaft to rotate through the gear set. A connecting rod 103 is provided between the chassis 101 and the bracket 102, and a matching rod is fixedly provided on the bracket 102. One end of the connecting rod 103 is rotatably connected to the matching rod, and the other end thereof is fixedly connected to the driving shaft. The driving member drives the driving shaft to rotate, and the driving shaft drives the connecting rod 103 to rotate, and the connecting rod 103 drives the bracket 102 to rotate, so that the angle between the bracket 102 and the chassis 101 can be adjusted to adjust the inclination angle of the bracket 102.

[0039] like Figure 1 to Figure 2As shown, the drill rod includes a rotating shaft 21, a drill bit 22 and an auger blade 23. The drill hole is a conical structure, and its large diameter end is fixedly connected to the bottom end of the rotating shaft 21. The auger blade 23 is fixedly connected to the peripheral side of the rotating shaft 21, and the bottom end of the auger blade 23 is fixedly connected to the large diameter end of the drill bit 22. The power system 3 includes a drive motor. A sliding seat 4 is provided at the top of the rotating shaft 21. The drive motor is fixedly arranged in the sliding seat 4. The output end of the drive motor is fixedly connected to the rotating shaft 21, and the drive motor can drive the rotating shaft 21 to rotate. The sliding seat 4 is slidably matched on the bracket 102. A lead screw is provided in the bracket 102. The lead screw is threadedly matched with the sliding seat 4. When the lead screw rotates, it can drive the sliding seat 4 to move along the bracket 102.

[0040] like Figures 1 to 4 As shown, the tamping assembly includes a tamping cylinder 51 and a diverter plate 52. The tamping cylinder 51 is a hollow cylindrical structure. The tamping cylinder 51 is fixedly arranged on the outer peripheral side of the auger blade 23. The inner wall of the tamping cylinder 51 is fixedly connected to the auger blade 23. The auger blade 23 forms a spiral channel in the tamping cylinder 51. The soil excavated during the drilling process can move upward along the spiral channel under the push of the spiral blade, and finally be discharged through the top of the tamping cylinder 51. A plurality of diversion openings 511 are provided on the side wall of the tamping cylinder 51. The plurality of diversion openings 511 are spaced apart along the axial direction of the tamping cylinder 51. A diversion plate 52 is provided at each diversion opening 511. The diversion plate 52 includes a first arc plate 522, a second arc plate 523 and a connecting shaft 521. First torsion springs 524 are provided at both ends of the connecting shaft 521. The first torsion springs 524 are respectively fixedly connected to the connecting shaft 521 and the tamping cylinder 51. The connecting shaft 521 is rotatably matched with the tamping cylinder 51 through the first torsion spring 524. The first arc plate 522 and the second arc plate 523 are respectively located on both sides of the connecting shaft 521. The first arc plate 522 and the second arc plate 523 have the same curvature, and the outer side walls of the first arc plate 522 and the second arc plate 523 are flush, and the end of the first arc plate 522 is a truncated cone structure.

[0041] Under normal conditions, the first torsion spring 524 is in a natural state, and the first arc plate 522 extends into the tamping cylinder 51. If the soil is solid during the drilling process and there is no gap between the tamping cylinder 51 and the wall of the drilled hole, the hole wall will press the diverter plate 52 onto the tamping cylinder 51 and make the outer wall of the diverter plate 52 flush with the side wall of the tamping cylinder 51. At this time, the first torsion spring 524 is in a tensioned state, and the diverter plate 52 can close the diverter port 511. The soil drilled out of the drilled hole moves upward along the spiral channel and is finally discharged from the top of the tamping cylinder 51. If the soil is relatively loose, the second arc plate 523 opens outward under the restoring force of the first torsion spring 524, and the first The arc plate 522 extends into the tamping cylinder 51 and diverts the soil in the spiral channel. Part of the soil continues to move upward along the spiral channel and is discharged from the top of the tamping cylinder 51, and the other part moves along the outer arc surface of the first arc plate 522 and is discharged from the diversion port 511 of the tamping cylinder 51 and enters between the hole wall and the tamping cylinder 51. The tamping cylinder 51 can squeeze this part of the soil until the side wall of the borehole is compacted. When the side wall of the borehole is compacted, the diversion plate 52 is pressed onto the tamping cylinder 51 under the pressure of the soil, thereby closing the diversion port 511.

[0042] The thickness of the first arc plate 522 is greater than that of the second arc plate 523, so that the diverter plate 52 forms a groove on the inner wall of the second arc plate 523. A baffle 6 is also provided on the diverter port 511, and the baffle 6 can fit with the groove on the diverter plate 52. The diverter plate 52 is provided with an outer arc surface at the driving shaft, and the outer arc surface fits with the end of the baffle 6. The baffle 6 can close the right half of the diverter port 511, so that the soil in the spiral channel can only pass through the diverter port 511 along the outer wall of the first arc plate 522 and move to the outside of the tamping cylinder 51, preventing the soil from flowing out from the other side of the diverter port 511, causing the diverter plate 52 to be unable to close.

[0043] like Figure 3 and Figure 4 As shown, a water outlet cylinder 7 is provided at the end of the second arc plate 523, and the water outlet cylinder 7 is rotatably matched with the second arc plate 523 through a second torsion spring. A plurality of water outlet holes 71 are provided on the side wall of the water outlet cylinder 7, and the water outlet holes 71 are distributed at intervals along the axial direction of the water outlet cylinder 7. The connecting shaft 521 is a hollow structure. A connecting pipeline is provided in the second arc plate 523, and both ends of the connecting pipeline are respectively connected to the connecting shaft 521 and the water outlet cylinder 7. A water inlet pipeline is provided in the tamping cylinder 51, and the water inlet pipeline is connected to an external water source. The connecting shaft 521 on each diverter plate 52 is connected to the water inlet pipeline.

[0044] There is friction fit between the water outlet cylinder 7 and the wall of the drilled hole. During the drilling process, the water outlet cylinder 7 rotates under the action of friction, the second torsion spring accumulates force, and the water outlet hole 71 is exposed. At this time, the water in the water outlet cylinder 7 can flow out through the water outlet hole 71, thereby moistening the wall of the drilled hole and improving the compactness of the wall of the drilled hole.

[0045] like Figure 1 and Figure 5 As shown, a positioning ring 8 is provided at the bottom of the bracket 102. The positioning ring 8 is a frustum-shaped structure. The top of the positioning ring 8 is fixedly connected to the bottom of the bracket 102. The positioning ring 8 can be sleeved on the outer peripheral side of the tamping cylinder 51 and slide with the tamping cylinder 51. The bottom of the positioning ring 8 is provided with a plurality of fixing rods 9 evenly spaced along its circumference. The bottom end of the fixing rod 9 has a conical tip, and the fixing rod 9 can be inserted into the ground. The top of the inner wall of the positioning ring 8 is also provided with an inclined groove 81. When the top of the positioning ring 8 abuts against the diverter plate 52, the diverter plate 52 can move along the top of the inclined groove 81, so that the positioning ring 8 can squeeze the diverter plate 52 on the inner wall of the tamping cylinder 51 to prevent the diverter plate 52 from hindering the downward movement of the drill pipe.

[0046] The implementation principle of the pile drilling equipment for foundation construction in the embodiment of the present invention is: the driving member drives the driving shaft to rotate, the driving shaft drives the connecting rod 103 to rotate, and the connecting rod 103 pushes the bracket 102 to rotate until the bracket 102 is vertically distributed. During the rotation of the bracket 102, the fixing rod 9 at the bottom of the positioning ring 8 is gradually inserted into the ground, thereby fixing the positioning ring 8. The position of the positioning ring 8 is the drilling position.

[0047] The lead screw rotates and causes the sliding seat 4 to move downward along the bracket 102. At the same time, the driving motor drives the rotating shaft 21 to rotate, and the rotating shaft 21 drives the drill bit 22 and the spiral blade to rotate. The drill rod passes through the positioning ring 8 and drills a hole in the ground. The excess soil generated during the drilling process enters the spiral channel and is discharged from the top of the tamping cylinder 51 under the push of the auger blade 23. The soil discharged from the top of the tamping cylinder 51 falls on the conical surface of the positioning ring 8 under the action of gravity, and slides down along the conical surface of the positioning ring 8, thereby preventing soil from accumulating at the borehole mouth.

[0048] During the drilling process, if the soil layer is relatively compact, under the pressure of the borehole wall, the outer wall of the diverter plate 52 is flush with the inner wall of the tamping cylinder 51, and the first torsion spring 524 is in a tensioned state at this time; if the soil layer is relatively loose, the elastic force of the first torsion spring 524 pushes the diverter plate 52 to rotate, so that the first arc plate 522 extends into the spiral channel, and the second arc plate 523 opens outward, and the diverter plate 52 thereby diverts the soil in the spiral channel. The looser the soil, the greater the rotation amplitude of the diverter plate 52, and the more soil is diverted. The diverted soil moves along the outer arc surface of the first arc plate 522 and is discharged from the tamping cylinder 51 from the diversion port 511, and enters between the hole wall and the tamping cylinder 51. The tamping cylinder 51 can squeeze this part of the soil until it is compacted on the side wall of the borehole. When the side wall of the borehole is compacted, the diverter plate 52 is pressed on the tamping cylinder 51 under the pressure of the soil, thereby closing the diversion port 511. The looseness of the borehole wall is automatically determined by the tension of the first torsion spring 524, so that the loose position can be accurately filled with soil.

[0049] During the drilling process, the water outlet cylinder 7 rotates under the action of the friction force of the borehole wall, the second torsion spring accumulates force, and the water outlet hole 71 is exposed. At this time, the water in the water outlet cylinder 7 can flow out through the water outlet hole 71, thereby moistening the borehole wall, improving the compactness of the borehole wall, and preventing the soil layer from being too dry and unable to aggregate together.

[0050] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A pile drilling device for foundation construction, comprising: Drill pipe, support system, power system; The drill rod comprises a rotating shaft, a drill bit and an auger blade, wherein the drill bit is arranged at the bottom end of the rotating shaft, and the auger blade is arranged at the peripheral side of the rotating shaft; The support system is used to support the drill pipe; The power system is used to provide power for the drill pipe; The invention is characterized in that it also includes a tamping assembly, the tamping assembly includes a tamping cylinder and a diverter plate, the tamping cylinder is arranged on the outer peripheral side of the auger blade, the auger blade forms a spiral channel in the tamping cylinder, the tamping cylinder is provided with a plurality of diverter ports distributed at intervals, each of the diverter ports is provided with a diverter plate, the diverter plate is rotatably matched with the tamping cylinder, the diverter plate can extend into the spiral channel, and the amount of diverted soil can be adjusted according to the compaction degree of the soil layer; The diverter plate includes a first arc plate, a second arc plate and a connecting shaft, wherein the connecting shaft is located at the connection between the first arc plate and the second arc plate, and a first torsion spring is provided on the connecting shaft, and the first torsion spring is connected to the tamping cylinder; A baffle is provided at the diversion port, the thickness of the first arc plate is greater than that of the second arc plate, the baffle can fit with the second arc plate, the diversion plate is provided with an outer arc surface at the connecting shaft, and the end of the baffle abuts against the outer arc surface of the diversion plate.

2. The pile drilling equipment for foundation construction according to claim 1, characterized in that: The end of the second arc plate is rotatably matched with a water outlet cylinder, the connecting shaft is a hollow structure, a connecting pipe is provided in the second arc plate, the water outlet cylinder is connected to the connecting shaft through the connecting pipe, a water inlet pipe is provided in the tamping cylinder, the connecting shaft is connected to the water inlet pipe, the water inlet pipe is connected to an external water source, the water outlet cylinder is connected to the second arc plate through a second torsion spring, and a water outlet hole is provided on the side wall of the water outlet cylinder.

3. The pile drilling equipment for foundation construction according to claim 2, characterized in that: The end of the first arc plate is a truncated cone structure.

4. The pile drilling equipment for foundation construction according to claim 1, characterized in that: The support system includes a chassis and a bracket. The chassis can be supported on the ground. A driving member and a driving shaft are provided on the chassis. The driving member is used to drive the driving shaft to rotate. A connecting rod is provided between the bracket and the chassis. One end of the connecting rod is rotatably connected to the bracket, and the other end is fixedly connected to the driving shaft. The drill rod is arranged on the bracket.

5. The pile drilling equipment for foundation construction according to claim 4, characterized in that: A positioning ring is provided at the bottom of the bracket, the drill rod can pass through the positioning ring, and the positioning ring can be slidably matched with the tamping cylinder.

6. The pile drilling equipment for foundation construction according to claim 5, characterized in that: The positioning ring is in a frustum shape and can prevent soil discharged during drilling from accumulating at the hole mouth.

7. The pile drilling equipment for foundation construction according to claim 6, characterized in that: The positioning ring is provided with a plurality of fixing rods which are distributed at intervals along the circumference thereof, and the fixing rods can be inserted into the ground to fix the positioning ring.

8. The pile drilling equipment for foundation construction according to claim 7, characterized in that: The end of the fixing rod has a tapered tip.

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