Hole cleaning device for large-diameter cast-in-situ bored pile under complex stratum condition and construction technology

Abstract

The invention discloses a large-diameter cast-in-situ bored pile hole cleaning device under complex stratum conditions, comprising: a hole cleaning support member comprising an upper support member, a hole cleaning pouring rotary transmission member and a lower separation support member, the upper support member and the lower separation support member providing support for the circumferential rotation of the connected hole cleaning pouring rotary transmission member in a drill hole; the wall protection hole cleaning part comprises a rotating wall protection part, a wall protection power part and an upper hole cleaning part, the rotating wall protection part rotates on the hole cleaning pouring rotary transmission part in the circumferential direction of the hole cleaning pouring rotary transmission part, and the rotating wall protection part is driven by the wall protection power part connected with the rotating wall protection part to move in the axial direction of the hole cleaning pouring rotary transmission part; and the bottom hole cleaning part is used for cleaning the bottom of the drill hole below the lower partition supporting part. The hole cleaning quality and the hole cleaning efficiency can be remarkably improved, the pouring efficiency and the pile forming quality of the cast-in-place pile are remarkably improved, and falling and collapse of residues on the hole wall of the drilled hole can be remarkably reduced.

Description

Technical Field

[0001] The invention relates to the technical field of pile hole cleaning, and more specifically to a large-diameter bored pile hole cleaning device and a construction process under complex stratum conditions. Background Art

[0002] With the continuous construction of urban infrastructure, such as bridges and high-rise buildings, which are constantly developing towards larger spans and higher heights, pile foundations are required to have a higher bearing capacity. Bored piles are currently the most widely used form of pile foundation. Bored piles refer to piles made by forming pile holes in the foundation soil at the construction site through mechanical drilling, steel pipe squeezing or manual excavation, and placing steel cages and pouring concrete inside. The existing construction of bored piles is also constantly developing in the direction of large diameter and ultra-deep piles. Due to the influence of complex geological conditions and the surrounding environment, its technical complexity and construction difficulty are unprecedented. After the final hole inspection fully meets the design requirements, the bottom of the hole should be cleaned immediately to avoid mud sedimentation due to too long a time interval, which may cause the collapse of the borehole. During the process of pouring concrete after drilling piles, there will be residues at the bottom of the hole and residues on the hole wall will fall off during the pouring process. At present, mechanical hole cleaning is usually used to clean the hole. The main mechanical hole cleaning methods include slurry extraction, slurry replacement, slag removal, and mortar replacement slag transfer. Among them, the slurry extraction method is more thorough and widely used. The slurry extraction method refers to the use of suction to extract the slurry containing drill cuttings in the hole and replenish it from the hole mouth with mud that meets the requirements. Therefore, during the slurry extraction process of the borehole, the borehole wall and the hole mouth are prone to the fall of the hole wall residue and collapse, making the slurry extraction method difficult to apply to large-diameter, ultra-deep piles and complex formation drilling holes where the hole wall is prone to collapse; other hole cleaning methods are more difficult to clean the hole thoroughly, and incomplete hole cleaning will cause interlayers, broken piles, and even waste piles, causing serious losses. Therefore, the sediment at the bottom of the hole needs to be fully cleaned during construction. Summary of the invention

[0003] In order to overcome the above-mentioned defects, the present invention provides a large-diameter bored pile hole cleaning device and a construction process under complex stratum conditions, which specifically adopts the following technical solutions: The large-diameter bored pile hole cleaning device under complex stratum conditions includes: A hole cleaning support member is arranged on the inner wall of the borehole, and comprises an upper support member, a hole cleaning and pouring rotary transmission member, and a lower partition support member. The upper support member and the lower partition support member provide support for the circumferential rotation of the hole cleaning and pouring rotary transmission member connected thereto in the borehole, and the lower partition support member separates the bottom of the borehole from the upper part; A wall protection and hole cleaning member, which is arranged on the hole cleaning and casting rotary transmission member, and comprises a rotating wall protection member, a wall protection power member and an upper hole cleaning member, wherein the rotating wall protection member rotates circumferentially on the hole cleaning and casting rotary transmission member, and the rotating wall protection member is driven by the connected wall protection power member to move axially along the hole cleaning and casting rotary transmission member, and the upper hole cleaning member cleans the mud residue on the lower partition support member on the hole cleaning and casting rotary transmission member; A bottom hole cleaning member is mounted on the hole cleaning and pouring rotating transmission member to clean the bottom of the drilled hole below the lower partition support member.

[0004] Preferably, the upper support member includes an upper rotating support tube and a support leg, and the support leg is arranged on the upper rotating support tube; the support leg includes a first support tube, a second support tube and a first automatic telescopic rod, one end of the first support tube is arranged on the upper rotating support tube, one end of the second support tube is embedded in the other end of the first support tube, the bottom end of the first automatic telescopic rod is fixedly embedded in the first support tube, the top end of the first automatic telescopic rod is connected to the second support tube, and the other end of the second support tube is provided with a friction pad; a plurality of the support legs are evenly distributed around the upper rotating support tube; the upper rotating support tube is installed at the drilling hole through a plurality of the support legs.

[0005] Preferably, the hole cleaning and pouring rotary transmission member includes a rotary transmission member and a rotary power member, and the rotary transmission member and the rotary power member are both arranged on the upper support member; the rotary transmission member includes a first rotary transmission tube, a second rotary transmission tube, a third rotary transmission tube, a fourth rotary transmission tube, a fifth rotary transmission tube, a sixth rotary transmission tube, a seventh rotary transmission tube and an eighth rotary transmission tube, one end of the first rotary transmission tube is rotatably embedded in the upper rotary support tube, one end of the second rotary transmission tube is sleeved on the other end of the first rotary transmission tube, and the first slider on the second rotary transmission tube cooperates with the first slide groove on the first rotary transmission tube, the first slide groove is L-shaped as a whole, one end of the third rotary transmission tube is slidably sleeved on the other end of the second rotary transmission tube, and the One end of the fourth rotation transmission tube is slidably mounted on the other end of the third rotation transmission tube, one end of the fifth rotation transmission tube is slidably mounted on the other end of the fourth rotation transmission tube, one end of the sixth rotation transmission tube is slidably mounted on the other end of the fifth rotation transmission tube, one end of the seventh rotation transmission tube is slidably mounted on the other end of the sixth rotation transmission tube, one end of the eighth rotation transmission tube is slidably mounted on the other end of the seventh rotation transmission tube, and the other end of the eighth rotation transmission tube is hinged with a first one-way sealing plate; the rotating power component includes a motor, a first gear and a second gear, the motor is arranged on the supporting leg, the first gear is arranged on the rotating shaft of the motor, the second gear is fixedly mounted on the first rotation transmission tube, and the second gear is meshed with the first gear.

[0006] Preferably, the lower partition support comprises a support plate, a support barrel, a sealing airbag, a first air supply hose, an upper sealing ring and a lower sealing ring, a lower rotating support tube is embedded at the center of the support plate, the support plate is rotatably sleeved on the outside of the eighth rotating transmission tube through the lower rotating support tube, one end of the support barrel is horizontally embedded in the support hole on the side wall of the support plate, the sealing airbag is annular, the inner annular surface of the sealing airbag is sleeved on the side wall of the support plate, and the inner annular surface of the sealing airbag is penetrated by the other end of the support barrel, and the inner side wall of the outer annular surface of the sealing airbag is connected to the other end of the support barrel; one end of the first air supply hose penetrates outwardly through the side wall of one end of the first rotating transmission tube, and the other end of the first air supply hose penetrates outwardly through the side wall of the eighth rotating transmission tube; the upper The upper sealing ring is rotatably sealed and sleeved on the outer wall of one end of the first rotating transmission tube, and the first gas delivery groove on the inner wall of the upper sealing ring is connected to one end of the first gas delivery hose; the upper sealing ring is connected with a second gas delivery hose, one end of the second gas delivery hose is connected to the first gas delivery groove, and the other end of the second gas delivery hose is connected to an air pressure pump; the lower sealing ring has the same structure as the upper sealing ring, the lower sealing ring is rotatably sealed and sleeved on the outer wall of the eighth rotating transmission tube, and the first gas delivery groove of the lower sealing ring is connected to the other end of the first gas delivery hose; the lower sealing ring is connected with a third gas delivery hose, one end of the third gas delivery hose is connected to the first gas delivery groove of the lower sealing ring, and the other end of the third gas delivery hose is connected to the bottom of the support hole.

[0007] Preferably, the rotating wall protection member includes a rotating wall protection seat and a wall protection smoothing member, the rotating wall protection seat is arranged on the rotating transmission member, and the wall protection smoothing member is arranged on the rotating wall protection seat; the rotating wall protection seat includes a rotating wall protection tube and a sliding transmission member, the sliding transmission member is arranged on the rotating wall protection tube, and the sliding transmission member includes a transmission fixed tube, a spring and a sliding transmission plate, one end of the transmission fixed tube passes through the rotating wall protection tube, the spring is embedded in the other end of the transmission fixed tube, one end of the sliding transmission plate is slidably embedded in one end of the transmission fixed tube, the other end of the sliding transmission plate is embedded in the second slide groove on the first rotating transmission tube, and the other end of the sliding transmission plate can slide from the second slide groove into the third slide groove on the second rotating transmission tube, and slide into the fourth slide groove on the third rotating transmission tube and the fourth sliding groove on the fourth rotating transmission tube one by one. The fifth slide groove, the sixth slide groove on the fifth rotating transmission tube, the seventh slide groove on the sixth rotating transmission tube, the eighth slide groove on the seventh rotating transmission tube and the ninth slide groove on the eighth rotating transmission tube, the other end of the sliding transmission plate is rounded, and the rotating wall protection tube is sleeved outside the rotating transmission member through multiple sliding transmission parts; the wall protection and smoothing part includes a third support tube, a fourth support tube, a second automatic telescopic rod and a smoothing plate, the third support tube is arranged on the rotating wall protection tube, one end of the fourth support tube is embedded in the other end of the third support tube, the bottom end of the second automatic telescopic rod is embedded in the third support tube, the top end of the second automatic telescopic rod is connected to the fourth support tube, the smoothing plate is in the shape of an arc plate, and the smoothing plate is arranged at the other end of the fourth support tube; multiple sets of the wall protection and smoothing parts are evenly distributed around the rotating wall protection tube.

[0008] Preferably, the wall protection power component includes a circumferential transmission component, a radial adjustment component, a steering control component and a tension transmission component, the circumferential transmission component is arranged on the upper support component, the radial adjustment component is arranged on the circumferential transmission component, the steering control component is arranged on the radial adjustment component, and the tension transmission component is arranged on the radial adjustment component; the circumferential transmission component includes a circumferential transmission seat, a circumferential sliding seat, a circumferential locking tube, a first magnetic coil and a circumferential locking shaft, the circumferential transmission seat is arranged on the lower side of the support leg, the circumferential sliding seat is embedded in the circumferential transmission seat, one end of the circumferential locking tube is through-set on the circumferential transmission seat, the first magnetic coil is embedded in the circumferential locking tube, the circumferential locking shaft is slidably embedded in the circumferential locking tube, and the circumferential locking shaft corresponds to the locking hole on the circumferential sliding seat.

[0009] Preferably, the radial adjustment member comprises a radial slide, a radial slider, a third automatic telescopic rod and a winding tube, the radial slide is in a C-shaped tubular shape, the radial slide is radially arranged on the circumferential slide seat, the radial slider is slidably embedded in the radial slide, the bottom end of the third automatic telescopic rod is embedded in one end of the radial slide, the top end of the third automatic telescopic rod is connected to the radial slider, and one end of the winding tube is arranged on the radial slider; a plurality of sets of radial adjustment members are evenly distributed along the circumference of the circumferential slide seat; the steering control member comprises a second magnetic coil and a steering control rod, the second magnetic coil is embedded in the winding tube, the steering control rod is L-shaped, and one end of the steering control rod is slidably embedded in the winding tube; the tension transmission component includes a steel wire rope, a first steering wheel and a second steering wheel, one end of the steel wire rope is connected to one of the winding tubes, the first steering wheel is arranged on the eighth rotating transmission tube through a first fixed frame, and the second steering wheel is arranged on the first rotating transmission tube through a second fixed frame, and the other end of the steel wire rope is connected to the rotating wall protection seat after being turned by the first steering wheel and the second steering wheel.

[0010] Preferably, the upper hole cleaning component includes a first slag suction pipe, a second one-way sealing plate, a second slag suction pipe, a first retractable fixed pipe, a third magnetic coil and a first retractable transmission shaft, one end of the first slag suction pipe penetrates into one end of the eighth rotating transmission pipe, one side of the second one-way sealing plate is hinged on a port of the first slag suction pipe, one end of the second slag suction pipe is slidably embedded in the other end of the first slag suction pipe, the first retractable fixed pipe is arranged on the first slag suction pipe, the third magnetic coil is embedded in the first retractable fixed pipe, one end of the first retractable transmission shaft is slidably embedded in the first retractable fixed pipe, and the other end of the first retractable transmission shaft is connected to the second slag suction pipe.

[0011] Preferably, the bottom hole cleaning component includes a third slag suction pipe, a third one-way sealing plate, a fourth slag suction pipe, a second retractable fixed pipe, a fourth magnetic coil, a second retractable transmission shaft and a slurry relay pipe, one end of the third slag suction pipe penetrates into the other end of the eighth rotating transmission pipe, one side of the third one-way sealing plate is hinged on a port of the third slag suction pipe, one end of the fourth slag suction pipe is slidably embedded in the other end of the third slag suction pipe, the second retractable fixed pipe is arranged on the third slag suction pipe, the fourth magnetic coil is embedded in the second retractable fixed pipe, one end of the second retractable transmission shaft is slidably embedded in the second retractable fixed pipe, the other end of the second retractable transmission shaft is connected to the fourth slag suction pipe, and one end of the slurry relay pipe vertically penetrates the support plate, and its penetration point is close to the lower rotating support pipe.

[0012] Preferably, the construction process of the large-diameter bored pile hole cleaning device under complex stratum conditions includes: S1: hoisting a large-diameter bored pile cleaning device under the complex stratum condition into the borehole; S2: unfold the support legs and the lower partition support member, and adjust the rotating transmission member to the axis of the drilling hole; S3: starting the motor to rotate forward, and performing layered hole cleaning on the borehole through the upper hole cleaning member and the bottom hole cleaning member by the rotating transmission member, and blocking the bottom of the borehole by the lower partition support member; S4: the rotating transmission member rotated in the positive direction by the motor drives the rotating wall protection member to rotate circumferentially, and at the same time, the rotating wall protection member is driven by the wall protection power member to move downward to extrude and smooth the inner wall of the borehole; S5: After the mud residue on the bottom of the borehole and the lower partition support is cleaned, the support legs, the rotating wall protection member and the lower partition support are successively retracted radially to facilitate lowering the steel cage to a predetermined position; S6: pouring concrete to the bottom of the drill hole through the rotating transmission member, and rotating the rotating transmission member during the pouring process to stir the concrete through the bottom hole cleaning member; S7: After pouring to a predetermined depth, the motor is started to rotate in the opposite direction, thereby pulling the eighth rotating transmission tube to retract and rise along the axial direction; S8: After the casting of the borehole is completed by repeating S7, the large-diameter bored pile cleaning device under the complex stratum condition can be hoisted out from the borehole.

[0013] The present invention has at least the following beneficial effects: 1) The large-diameter bored pile hole cleaning device and construction process under complex stratum conditions of the present invention can significantly improve the hole cleaning quality and hole cleaning efficiency, significantly improve the casting efficiency and pile quality of bored piles, and can significantly reduce the shedding and collapse of the borehole wall residue; 2) The large-diameter bored pile hole cleaning device and construction process under complex stratum conditions of the present invention are provided with a lower partition support, an upper hole cleaning member and a bottom hole cleaning member. The lower partition support member can separate the bottom of the borehole from the upper part. After the bottom hole cleaning member continuously cleans the bottom of the borehole, the lower partition support member can prevent the mud residue on the upper part of the borehole from settling to the bottom of the borehole, so as to ensure the hole cleaning quality, hole cleaning efficiency and concrete pouring quality of the bottom of the borehole; 3) The large-diameter bored pile hole cleaning device and construction process under complex stratum conditions of the present invention is provided with a wall protection hole cleaning component, which can exert a radial pressing and smoothing force on the borehole wall by cooperating with the rotating transmission component to improve the stability of the borehole wall, so as to significantly reduce the shedding of residue and collapse rate of the borehole wall, significantly improve the hole cleaning quality and hole cleaning efficiency, and significantly improve the quality of bored pile formation. Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the large-diameter bored pile cleaning device installed in the borehole under complex stratum conditions of the present invention; Figure 2 It is a top view of the large-diameter bored pile cleaning device installed in the borehole under complex stratum conditions of the present invention; Figure 3 This is a front view of the large-diameter bored pile hole cleaning device under complex stratum conditions of the present invention; Figure 4 The invention is a large-diameter bored pile hole cleaning device under complex stratum conditions Figure 3 A partial enlarged view of middle A; Figure 5 The invention is a large-diameter bored pile hole cleaning device under complex stratum conditions Figure 4 A partial enlarged view of B in the middle; Figure 6 It is a schematic diagram of the three-dimensional structure of the large-diameter bored pile hole cleaning device under complex stratum conditions of the present invention; Figure 7 The invention is a large-diameter bored pile hole cleaning device under complex stratum conditions Figure 6 A partial enlarged view of middle C; Figure 8 The invention is a large-diameter bored pile hole cleaning device under complex stratum conditions Figure 6 A partial enlarged view of D in the middle; Fig. 9 The invention is a large-diameter bored pile hole cleaning device under complex stratum conditions Figure 6 A partial enlarged view of E in the middle; Fig.10 It is a bottom-up three-dimensional structural schematic diagram of a large-diameter bored pile hole cleaning device under complex stratum conditions of the present invention; Fig.11 The invention is a large-diameter bored pile hole cleaning device under complex stratum conditions Fig.10 A partial enlarged view of middle F; Fig.12The invention is a large-diameter bored pile hole cleaning device under complex stratum conditions Fig.10 A partial enlarged view of middle G; Fig.13 The invention is a large-diameter bored pile hole cleaning device under complex stratum conditions Fig.10 A partial enlarged view of H in the figure.

[0015] Among them: 1-drilling, 3-first support tube, 4-second support tube, 5-friction pad, 6-first rotating transmission tube, 7-second rotating transmission tube, 8-third rotating transmission tube, 9-fourth rotating transmission tube, 10-fifth rotating transmission tube, 11-sixth rotating transmission tube, 12-seventh rotating transmission tube, 13-eighth rotating transmission tube, 14-motor, 15-support plate, 16-sealing airbag, 17-rotating wall protection tube, 18-transmission fixed tube, 19-sliding transmission plate, 20-third support tube, 21-fourth support tube, 22-smoothing plate, 23-circumferential transmission seat, 24-circumferential sliding seat, 25-circumferential locking piece, 26-radial sliding seat, 27-radial sliding block, 28-winding tube, 29-steering control rod, 30-wire rope, 31-first steering wheel, 32-second fixed frame, 33-first slag suction pipe, 34-second slag suction pipe, 35-first retractable fixed pipe, 36-first retractable transmission shaft, 37-third slag suction pipe, 38-fourth slag suction pipe, 39-second retractable fixed pipe, 40-second retractable transmission shaft, 41-first one-way sealing plate. DETAILED DESCRIPTION The technical solution of the present invention will be described in detail below by way of embodiments with reference to the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0016] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that there can be two relationships. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0017] according to Figure 1-Figure 13As shown, a large-diameter bored pile hole cleaning device and construction process under complex formation conditions include a hole cleaning support, a wall hole cleaning member and a bottom hole cleaning member. The hole cleaning support is arranged on the inner wall of the borehole 1, and the wall hole cleaning member and the bottom hole cleaning member are both arranged on the hole cleaning support. The hole cleaning support includes an upper support, a hole cleaning and pouring rotary transmission member and a lower partition support. The upper support and the lower partition support are both arranged in the borehole 1, and the hole cleaning and pouring rotary transmission member is arranged on the upper support and the lower partition support. The upper support includes an upper rotating support tube and a support leg, and the support leg is arranged on the upper rotating support tube. The support leg includes a first support tube 3, a second support tube 4 and a first automatic telescopic rod. One end of the first support tube 3 is horizontally fixedly arranged on the upper rotating support tube, and one end of the second support tube 4 is horizontally embedded in the other end of the first support tube 3, so that the second support tube 4 can slide horizontally axially in the first support tube 3. The bottom end of the first automatic telescopic rod is fixedly embedded in the first support tube 3, and the top end of the first automatic telescopic rod is fixedly embedded in the second support tube 4, so that the first automatic telescopic rod can control the second support tube 4 to extend and retract in the first support tube 3, and the cooperation between the second support tube 4 and the first support tube 3 can increase the lateral bearing capacity of the first automatic telescopic rod. Furthermore, a friction pad 5 is provided at the other end of the second support tube 4, and the friction pad 5 can increase the stability between the second support tube 4 and the inner wall of the borehole 1. There are four support legs, and the four support legs are evenly distributed around the upper rotating support tube. The upper rotating support tube is horizontally installed at the opening of the borehole 1 through the four support legs, so that the axis of the upper rotating support tube coincides with the axis of the borehole 1. When it is necessary to move the steel cage downward into the borehole 1, the second support tube 4 can be retracted linearly.

[0018] The hole cleaning and pouring rotary transmission member includes a rotary transmission member and a rotary power member, and the rotary transmission member and the rotary power member are both arranged on the upper support member. The rotary transmission member includes a first rotary transmission tube 6, a second rotary transmission tube 7, a third rotary transmission tube 8, a fourth rotary transmission tube 9, a fifth rotary transmission tube 10, a sixth rotary transmission tube 11, a seventh rotary transmission tube 12 and an eighth rotary transmission tube 13. One end of the first rotary transmission tube 6 is rotatably embedded in the upper rotary support tube, so that the first rotary transmission tube 6 can be circumferentially rotated and axially locked in the upper rotary support tube. One end of the second rotary transmission tube 7 is slidably sleeved on the other end of the first rotary transmission tube 6, and the first slider on the inner wall of the second rotary transmission tube 7 cooperates with the first slide groove on the outer wall of the first rotary transmission tube 6. The first slider is in the shape of a rectangular block, the first slide groove is L-shaped as a whole, the cross section of the first slide groove is in the shape of a rectangular groove, and one end of the first slide groove extends axially along the first rotary transmission tube 6. The second rotating transmission tube 7 can slide in the groove at one end of the first sliding groove through the first slider to achieve axial sliding along the first rotating transmission tube 6, so as to retract the second rotating transmission tube 7 and cover it on the first rotating transmission tube 6. When the second rotating transmission tube 7 and the first rotating transmission tube 6 are fully stretched, the first rotating transmission tube 6 rotating in the forward direction can slide the other end of the first sliding groove onto the first slider, thereby achieving axial locking of the first rotating transmission tube 6 and the second rotating transmission tube 7. When the first rotating transmission tube 6 rotates in the reverse direction, the axial locking with the second rotating transmission tube 7 can be released. One end of the third rotating transmission tube 8 is slidably covered on the other end of the second rotating transmission tube 7, and the connection mode of the third rotating transmission tube 8 and the second rotating transmission tube 7 is the same as the connection mode of the second rotating transmission tube 7 and the first rotating transmission tube 6. One end of the fourth rotating transmission tube 9 is slidably covered on the other end of the third rotating transmission tube 8, and the connection mode of the fourth rotating transmission tube 9 and the third rotating transmission tube 8 is the same as the connection mode of the second rotating transmission tube 7 and the first rotating transmission tube 6. One end of the fifth rotation transmission tube 10 is slidably mounted on the other end of the fourth rotation transmission tube 9, and the connection mode between the fifth rotation transmission tube 10 and the fourth rotation transmission tube 9 is the same as the connection mode between the second rotation transmission tube 7 and the first rotation transmission tube 6. One end of the sixth rotation transmission tube 11 is slidably mounted on the other end of the fifth rotation transmission tube 10, and the connection mode between the sixth rotation transmission tube 11 and the fifth rotation transmission tube 10 is the same as the connection mode between the second rotation transmission tube 7 and the first rotation transmission tube 6.One end of the seventh rotary transmission tube 12 is slidably mounted on the other end of the sixth rotary transmission tube 11, and the connection method between the seventh rotary transmission tube 12 and the sixth rotary transmission tube 11 is the same as the connection method between the second rotary transmission tube 7 and the first rotary transmission tube 6. One end of the eighth rotary transmission tube 13 is slidably mounted on the other end of the seventh rotary transmission tube 12, and the connection method between the eighth rotary transmission tube 13 and the seventh rotary transmission tube 12 is the same as the connection method between the second rotary transmission tube 7 and the first rotary transmission tube 6. A first one-way sealing plate 41 is hinged at the other end of the eighth rotary transmission tube 13. When the eighth rotary transmission tube 13 sucks mud from the borehole 1, the other end of the eighth rotary transmission tube 13 will be blocked by the first one-way sealing plate 41; when the eighth rotary transmission tube 13 transports concrete into the borehole 1, the first one-way sealing plate 41 will be opened.

[0019] Further, the first rotary transmission tube 6, the second rotary transmission tube 7, the third rotary transmission tube 8, the fourth rotary transmission tube 9, the fifth rotary transmission tube 10, the sixth rotary transmission tube 11, the seventh rotary transmission tube 12 and the eighth rotary transmission tube 13 have the same length, and the specific lengths of the first rotary transmission tube 6, the second rotary transmission tube 7, the third rotary transmission tube 8, the fourth rotary transmission tube 9, the fifth rotary transmission tube 10, the sixth rotary transmission tube 11, the seventh rotary transmission tube 12 and the eighth rotary transmission tube 13 are determined according to the height of the casting tube being pulled up each time when the cast-in-place pile is cast in concrete, so that the length of the first rotary transmission tube 6, the second rotary transmission tube 7, the third rotary transmission tube 8, the fourth rotary transmission tube 9, the fifth rotary transmission tube 10, the sixth rotary transmission tube 11, the seventh rotary transmission tube 12 and the eighth rotary transmission tube 13 each time can meet the height requirement of the casting tube being pulled up when the cast-in-place pile is cast in concrete.

[0020] Furthermore, a rotary relay barrel is rotatably mounted on one end of the first rotary transmission tube 6, and the rotary relay barrel mouth is rotatably mounted on a port of the first rotary transmission tube 6. The bottom of the rotary relay barrel is connected to a slurry extraction hose, and the other end of the slurry extraction hose is connected to a slurry extraction pump. The slurry extraction pump sucks out mud slurry from the borehole 1 through the slurry extraction hose, the rotary relay barrel and the rotary transmission member. After the hole is cleaned, when it is necessary to transport concrete into the borehole 1 through the rotary transmission member, the rotary relay barrel is pulled out, and then concrete is poured into the borehole 1 through the first rotary transmission tube 6.

[0021] The rotating power component includes a motor 14, a first gear and a second gear. The motor 14 is fixedly arranged on the mounting plate on the supporting leg, the first gear is fixedly arranged on the rotating shaft of the motor 14, the second gear is fixedly sleeved on the first rotating transmission tube 6, and the second gear is meshed with the first gear.

[0022] The lower partition support member includes a support plate 15, a support barrel, a sealing airbag 16, a first air supply hose, an upper sealing ring and a lower sealing ring. The support plate 15 is in the shape of a circular plate. A lower rotating support tube is fixedly embedded at the center of the support plate 15, and the support plate 15 is rotatably sleeved on the outside of the eighth rotating transmission tube 13 through the lower rotating support tube, so that the eighth rotating transmission tube 13 can rotate circumferentially in the lower rotating support tube. One end of the support barrel is horizontally embedded in the support hole on the side wall of the support plate 15, so that the support barrel can slide back and forth axially in the support hole. The axis of the support hole is parallel to the radial line of the support plate 15. Four support barrels are provided, and the four support barrels are evenly distributed around the support plate 15. The sealing airbag 16 is in an annular tubular shape, and the inner annular surface of the sealing airbag 16 is fixedly sleeved on the side wall of the support plate 15, and after the inner annular surface of the sealing airbag 16 is penetrated by the other end of the support barrel, the inner side wall of the outer annular surface of the sealing airbag 16 is fixedly connected to the other end of the support barrel. The support barrel can improve the connection stability of the sealing airbag 16 and the support plate 15, and improve the contact stability and contact strength between the sealing airbag 16 and the inner wall of the borehole 1. The first gas delivery hose is in the rotating transmission member tube, and one end of the first gas delivery hose penetrates the side wall of one end of the first rotating transmission tube 6 outwardly, and the other end of the first gas delivery hose penetrates the side wall of the eighth rotating transmission tube 13 outwardly. The upper sealing ring is rotatably sleeved on the outer wall of one end of the first rotating transmission tube 6, and the first gas delivery groove on the inner wall of the upper sealing ring is connected with one end of the first gas delivery hose. Further, the first gas delivery groove is in an annular groove shape, the axis of the first gas delivery groove coincides with the axis of the upper sealing ring, and the cross section of the first gas delivery groove is in a rectangular groove shape. Rotating sealing rings are provided on both sides of the first gas delivery groove, and the rotating sealing rings can improve the sealing performance of the first gas delivery groove. A second gas delivery hose is connected through the upper sealing ring, one end of which is connected to the first gas delivery groove, and the other end of which is connected to the air pressure pump. The lower sealing ring has the same structure as the upper sealing ring, and the radial size of the lower sealing ring is larger than the radial size of the upper sealing ring. The lower sealing ring is rotatably sleeved on the outer wall of the eighth rotating transmission tube 13, and the first gas delivery groove of the lower sealing ring is connected to the other end of the first gas delivery hose. A third gas delivery hose is connected through the lower sealing ring, one end of which is connected to the first gas delivery groove of the lower sealing ring, and the other end of the third gas delivery hose is connected to the gas delivery relay cavity in the support plate 15. The gas delivery relay cavity is connected to the bottom of multiple support holes.When the air pump inputs high-pressure gas to the first air delivery hose, the gas enters the support barrel through the first gas delivery groove of the lower sealing ring and the gas delivery relay cavity, and then enters the sealing airbag 16 through the gas delivery through hole on the side wall of the other end of the support barrel, thereby filling and expanding the sealing airbag 16. The expanded sealing airbag 16 will be tightly squeezed on the inner wall of the borehole 1, providing auxiliary support for the rotating transmission member, and can separate the bottom of the borehole 1 from the upper part of the borehole 1, so that the bottom hole cleaning member and the wall protection hole cleaning member can cooperate with the bottom and upper hole cleaning operations of the borehole 1 respectively. When the lower steel cage is needed, air can be sucked into the sealing airbag 16.

[0023] The wall protection and hole cleaning member includes a rotating wall protection member, a wall protection power member and an upper hole cleaning member, the rotating wall protection member and the upper hole cleaning member are both arranged on the rotating transmission member, and the wall protection power member is arranged on the upper support member. The rotating wall protection member includes a rotating wall protection seat and a wall protection smoothing member, the rotating wall protection seat is arranged on the rotating transmission member, and the wall protection smoothing member is arranged on the rotating wall protection seat. The rotating wall protection seat includes a rotating wall protection tube 17 and a sliding transmission member, the sliding transmission member is arranged on the rotating wall protection tube 17, the inner wall of the rotating wall protection tube 17 is larger than the outer wall of the eighth rotating transmission tube 13, the sliding transmission member includes a transmission fixed tube 18, a spring and a sliding transmission plate 19, one end of the transmission fixed tube 18 horizontally passes through the rotating wall protection tube 17, the spring is embedded in the other end of the transmission fixed tube 18, one end of the sliding transmission plate 19 is slidably embedded in the one end of the transmission fixed tube 18, the other end of the sliding transmission plate 19 is embedded in the second slide groove on the outer wall of the first rotating transmission tube 6, and the sliding transmission member The other end of the moving plate 19 can slide axially from the second slide groove into the third slide groove on the outer wall of the second rotating transmission tube 7, and slide into the fourth slide groove on the third rotating transmission tube 8, the fifth slide groove on the fourth rotating transmission tube 9, the sixth slide groove on the fifth rotating transmission tube 10, the seventh slide groove on the sixth rotating transmission tube 11, the eighth slide groove on the seventh rotating transmission tube 12 and the ninth slide groove on the eighth rotating transmission tube 13 one by one, so that the sliding transmission plate 19 can slide axially back and forth in the second slide groove, the third slide groove, the fourth slide groove, the fifth slide groove, the sixth slide groove, the seventh slide groove, the eighth slide groove and the ninth slide groove. There are multiple sliding transmission members, and the multiple sliding transmission members are uniformly arranged on the rotating wall protection tube 17 along the circumferential direction. The rotating wall protection tube 17 is sleeved outside the rotating transmission member through multiple sliding transmission members, and the axis of the rotating wall protection tube 17 coincides with the axis of the first rotating transmission tube 6. The rotating transmission member drives the sliding transmission plate 19 and the rotating wall protection tube 17 to rotate circumferentially through the second slide groove, the third slide groove, the fourth slide groove, the fifth slide groove, the sixth slide groove, the seventh slide groove, the eighth slide groove and the ninth slide groove. Further, the corner of the other end of the sliding transmission plate 19 is rounded, and the radius of the rounded corner is greater than the wall thickness of the second rotating transmission tube 7, so as to smoothly slide from the second slide groove into the third slide groove.

[0024] The wall protection and smoothing member includes a third support tube 20, a fourth support tube 21, a second automatic telescopic rod and a smoothing plate 22. The third support tube 20 is horizontally fixedly arranged on the rotating wall protection tube 17. One end of the fourth support tube 21 is slidably embedded in the other end of the third support tube 20. The bottom end of the second automatic telescopic rod is fixedly embedded in the third support tube 20, and the top end of the second automatic telescopic rod is fixedly embedded in the fourth support tube 21. The second automatic telescopic rod can drive the fourth support tube 21 to slide back and forth axially in the third support tube 20. The smoothing plate 22 is in the shape of an arc plate. The inner side wall of the smoothing plate 22 is fixedly arranged on the other end of the fourth support tube 21, moves with the fourth support tube 21, and fits on the inner wall of the borehole 1. Four sets of the wall protection and smoothing members are arranged, and the four sets of the wall protection and smoothing members are evenly distributed around the rotating wall protection tube 17. The wall protection and smoothing member can circumferentially move and squeeze the inner wall of the borehole 1 through the smoothing plate 22 as the rotating wall protection tube 17 rotates circumferentially, so as to smooth the inner wall of the borehole 1 and increase the thickness of the mud layer on the inner wall of the borehole 1, thereby preventing the inner wall of the borehole 1 from falling off and collapsing. When the lower steel cage is needed, the fourth support tube 21 only needs to be retracted into the third support tube 20.

[0025] The wall protection power member includes a circumferential winding member and a tension transmission member, wherein the circumferential winding member is arranged on the upper support member, and the tension transmission member is arranged on the circumferential winding member. The circumferential winding member includes a circumferential transmission member, a radial adjustment member and a steering control member, wherein the circumferential transmission member is arranged on the upper support member, the radial adjustment member is arranged on the circumferential transmission member, and the steering control member is arranged on the radial adjustment member. The circumferential transmission member includes a circumferential transmission seat 23, a circumferential sliding seat 24 and a circumferential locking member 25, wherein the circumferential transmission seat 23 is an annular tubular as a whole, and the cross section of the circumferential transmission seat 23 is a C-shaped groove. The circumferential transmission seat 23 is fixedly arranged on the lower side of the support leg. The circumferential sliding seat 24 is annular as a whole, and the cross section of the circumferential sliding seat 24 is T-shaped, and the circumferential sliding seat 24 is embedded in the circumferential transmission seat 23, so that the circumferential sliding seat 24 can rotate circumferentially in the circumferential transmission seat 23. The circumferential locking member 25 includes a circumferential locking tube, a first magnetic coil and a circumferential locking shaft. One end of the circumferential locking tube is vertically penetrated on the circumferential transmission seat 23. The first magnetic coil is fixedly embedded in the circumferential locking tube. The circumferential locking shaft is slidably embedded in the circumferential locking tube, and the circumferential locking shaft is also embedded in the first magnetic coil. When the first magnetic coil is fed with positive direct current to generate a magnetic field, it will push the circumferential locking shaft to move axially downward in the circumferential locking tube, and then insert into the locking hole on the circumferential sliding seat 24. A plurality of the locking holes are evenly distributed around the circumferential sliding seat 24. The circumferential locking member 25 can circumferentially lock the circumferential transmission seat 23 and the circumferential sliding seat 24 as needed.

[0026] The radial adjustment member includes a radial slide 26, a radial slider 27, a third automatic telescopic rod and a winding tube 28. The radial slide 26 is a C-shaped tube. The radial slide 26 is fixedly arranged on the circumferential slide 24, and the axis of the radial slide 26 is parallel to the radial line of the circumferential slide 24. The radial slider 27 is slidably embedded in the radial slide 26. The bottom end of the third automatic telescopic rod is fixedly embedded in the tube at one end of the radial slide 26, and the top end of the third automatic telescopic rod is connected to the radial slider 27. The third automatic telescopic rod drives the radial slider 27 to reciprocate radially along the circumferential slide 24 in the radial slide 26 by extending and shortening. One end of the winding tube 28 passes through the notch of the radial slide 26 and is fixedly arranged on the radial slider 27. The radial adjustment member is provided with four sets, and the four sets of radial adjustment members are evenly distributed along the circumference of the circumferential slide 24.

[0027] The steering control member includes a second magnetic coil and a steering control rod 29. The second magnetic coil is fixedly embedded in the winding tube 28. The steering control rod 29 is L-shaped. One end of the steering control rod 29 is slidably embedded in the winding tube 28, and one end of the steering control rod 29 is also embedded in the second magnetic coil. When the second magnetic coil is fed with positive direct current to generate a magnetic field, it will push one end of the steering control rod 29 to move back and forth axially in the winding tube 28, and then the steel wire rope 30 is locked and buckled on the winding tube 28 through the other end of the steering control rod 29. When the circumferential sliding seat 24 rotates in the opposite direction relative to the first rotating transmission tube 6, the steering control rod 29 can prevent the steel wire rope 30 from falling off the winding tube 28, so as to meet the reverse winding of the steel wire rope 30 by multiple winding tubes 28.

[0028] The tension transmission member includes a steel wire rope 30, a first steering wheel 31 and a second steering wheel, one end of the steel wire rope 30 is fixedly connected to one of the winding tubes 28, the first steering wheel 31 is arranged on the eighth rotating transmission tube 13 through a first fixing frame, the second steering wheel is arranged on the first rotating transmission tube 6 through a second fixing frame 32, and the other end of the steel wire rope 30 is fixedly connected to the rotating wall protection seat after being turned by the first steering wheel 31 and the second steering wheel. When the motor 14 drives the rotating transmission member to rotate forward, the first rotating transmission tube 6, the second rotating transmission tube 7, the third rotating transmission tube 8, the fourth rotating transmission tube 9, the fifth rotating transmission tube 10, the sixth rotating transmission tube 11, the seventh rotating transmission tube 12 and the eighth rotating transmission tube 13 are axially locked, at this time, after the circumferential transmission seat 23 and the circumferential sliding seat 24 are circumferentially locked, one end of the steel wire rope 30 will be wound and taken up on the plurality of winding tubes 28, thereby pulling the rotating wall protection seat to move downward along the rotating transmission member. The rotating transmission member that moves downward and rotates circumferentially at the same time will protect the inner wall of the borehole 1. By controlling the sliding position of the radial slider 27 in the radial slide seat 26, the radius of the winding tube 28 from the axis of the rotating transmission member is controlled, and the winding speed of the wire rope 30 is controlled to control the vertical movement speed of the rotating wall protection seat. When the rotating wall protection part is pulled downward to the eighth rotating transmission tube 13, it cannot continue to move downward due to the obstruction of the upper hole cleaning part; at this time, the steering control lever 29 locks the wound wire rope 30 on the winding tube 28, and reversely starts the motor 14. The reversely rotating motor 14 will drive the first rotating transmission tube 6 to rotate in the opposite direction. At this time, the axial lock between the eighth rotating transmission tube 13 and the seventh rotating transmission tube 12 is released. At the same time, multiple winding tubes 28 will reversely wind and reel in the wire rope 30, thereby pulling the eighth rotating transmission tube 13 toward the seventh rotating transmission tube 12 to achieve axial shortening of the rotating transmission part and meet the requirement for the pouring tube to rise when pouring concrete.

[0029] The upper hole cleaning member includes a first slag suction pipe 33, a second one-way sealing plate, a second slag suction pipe 34, a first retractable fixed pipe 35, a third magnetic coil and a first retractable transmission shaft 36. One end of the first slag suction pipe 33 horizontally penetrates into one end of the eighth rotary transmission pipe 13. One side of the second one-way sealing plate is hinged on one end of the first slag suction pipe 33. When the eighth rotary transmission pipe 13 sucks mud and slag from the borehole 1 through the first slag suction pipe 33, the second one-way sealing plate will be opened. When the eighth rotary transmission pipe 13 transports concrete into the borehole 1, the second one-way sealing plate is covered and sealed on one end of the first slag suction pipe 33 by gravity to prevent concrete from entering the first slag suction pipe 33. One end of the second slag suction pipe 34 is slidably embedded in the other end of the first slag suction pipe 33. The first retractable fixed tube 35 is fixedly arranged on the first slag suction tube 33, the third magnetic coil is fixedly embedded in the first retractable fixed tube 35, and one end of the first retractable transmission shaft 36 is slidably embedded in the first retractable fixed tube 35. The other end of the first retractable transmission shaft 36 is connected to the second slag suction tube 34. When the third magnetic coil is supplied with direct current to generate a magnetic field, the first retractable transmission shaft 36 is pulled to drive the second slag suction tube 34 to slide back and forth in the first slag suction tube 33. When the mud is pumped from the borehole 1 through the rotating transmission member, the mud and slag falling on the upper surface of the lower partition support member will be cleaned through the first slag suction tube 33 and the second one-way sealing plate. Furthermore, the first slag suction tube 33 and the second slag suction tube 34 are both in the shape of flat tubes, so as to drive the mud and slag to move to the wall of the borehole 1 when rotating with the rotating transmission member, thereby improving the hole cleaning efficiency. A second slag suction through hole is provided on the side wall of the second slag suction pipe 34 to further improve the slag suction efficiency of the lower partition support member.

[0030] The bottom hole cleaning member includes a third slag suction pipe 37, a third one-way sealing plate, a fourth slag suction pipe 38, a second retractable fixed pipe 39, a fourth magnetic coil, a second retractable transmission shaft 40 and a slurry relay pipe. One end of the third slag suction pipe 37 horizontally penetrates into the other end of the eighth rotary transmission pipe 13. One side of the third one-way sealing plate is hinged on one end of the third slag suction pipe 37. When the eighth rotary transmission pipe 13 sucks mud from the borehole 1 through the third slag suction pipe 37, the third one-way sealing plate will be opened. When the eighth rotary transmission pipe 13 transports concrete into the borehole 1, the third one-way sealing plate will cover and seal one end of the third slag suction pipe 37 to prevent concrete from entering the third slag suction pipe 37. One end of the fourth slag suction pipe 38 is slidably embedded in the other end of the third slag suction pipe 37. The second retractable fixed tube 39 is fixedly arranged on the third slag suction tube 37, the fourth magnetic coil is fixedly embedded in the second retractable fixed tube 39, and one end of the second retractable transmission shaft 40 is slidably embedded in the second retractable fixed tube 39. The other end of the second retractable transmission shaft 40 is connected to the fourth slag suction tube 38. When the fourth magnetic coil is fed with direct current to generate a magnetic field, the second retractable transmission shaft 40 is pulled to drive the fourth slag suction tube 38 to slide back and forth in the third slag suction tube 37. When the slurry is pumped from the borehole 1 through the rotating transmission member, the mud and slag at the bottom of the borehole 1 will be cleaned through the third slag suction tube 37 and the fourth slag suction tube 38. Further, the third slag suction tube 37 and the fourth slag suction tube 38 are both in the shape of flat tubes, so as to drive the mud and slag to move to the wall of the borehole 1 when rotating with the rotating transmission member, thereby improving the hole cleaning efficiency. A second slag suction through hole is provided on the side wall of the fourth slag suction tube 38 to further improve the slag suction efficiency. One end of the slurry relay pipe vertically penetrates the two end surfaces of the support plate 15, and its through hole is close to the lower rotating support pipe. Since the rotating upper hole cleaning member continuously pushes the mud residue on the lower partition support member to the well wall and sucks it into the eighth rotating transmission pipe 13 in time, the slurry flowing downward through the slurry relay pipe to the bottom of the borehole 1 meets the bottom slag cleaning requirements. When pouring concrete at the bottom of the borehole 1, continuously rotating the third slag suction pipe 37 can promote the discharge of concrete bubbles and further improve the pouring quality.

[0031] The construction process of the large-diameter bored pile hole cleaning device under complex stratum conditions includes: S1: hoisting a large-diameter bored pile cleaning device under the complex stratum condition into the borehole 1; S2: unfold the support legs and the lower partition support member, and adjust the rotating transmission member to the axis of the drilling hole 1; S3: starting the motor 14 to rotate forward, and performing layered hole cleaning on the borehole 1 through the rotating transmission member via the upper hole cleaning member and the bottom hole cleaning member, and effectively preventing mud residue from continuously falling to the bottom of the borehole 1 through the blocking effect of the lower partition support member; S4: The rotating transmission member rotated in the forward direction by the motor 14 drives the rotating wall protection member to rotate circumferentially, and at the same time, the rotating wall protection member is driven by the wall protection power member to move downward to squeeze and smooth the inner wall of the borehole 1, thereby improving the stability of the mud skin on the inner wall of the borehole 1 and preventing the inner wall of the borehole 1 from falling off and collapsing (according to the characteristics of the drilled soil layer, the radial extension length of the rotating wall protection member is adjusted to automatically adjust the squeezing force of the rotating wall protection member on the inner wall of the borehole 1 to improve the wall protection effect); S5: After the mud residue on the bottom of the borehole 1 and the lower partition support is cleaned, the support legs, the rotating wall protection member and the lower partition support are successively retracted radially to facilitate the lower part of the steel cage to a predetermined position; S6: pouring concrete to the bottom of the borehole 1 through the rotating transmission member, and rotating the rotating transmission member during the pouring process to stir the concrete through the bottom hole cleaning member to facilitate the discharge of air from the concrete and improve the quality of the pile; S7: After pouring to a predetermined depth, the motor 14 is started to rotate in the opposite direction, thereby pulling the eighth rotating transmission tube 13 to retract and rise in the axial direction; S8: After the casting of the borehole 1 is completed by repeating S7, the large-diameter bored pile cleaning device under the complex stratum condition can be hoisted out from the borehole 1.

[0032] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A large-diameter bored pile hole cleaning device under complex stratum conditions, characterized in that: include: A hole cleaning support member is arranged on the inner wall of the borehole, and comprises an upper support member, a hole cleaning and pouring rotary transmission member, and a lower partition support member. The upper support member and the lower partition support member provide support for the circumferential rotation of the hole cleaning and pouring rotary transmission member connected thereto in the borehole, and the lower partition support member separates the bottom of the borehole from the upper part; A wall protection and hole cleaning member, which is arranged on the hole cleaning and casting rotary transmission member, and comprises a rotating wall protection member, a wall protection power member and an upper hole cleaning member, wherein the rotating wall protection member rotates circumferentially on the hole cleaning and casting rotary transmission member, and the rotating wall protection member is driven by the connected wall protection power member to move axially along the hole cleaning and casting rotary transmission member, and the upper hole cleaning member cleans the mud residue on the lower partition support member on the hole cleaning and casting rotary transmission member; A bottom hole cleaning member is mounted on the hole cleaning and pouring rotating transmission member to clean the bottom of the drilled hole below the lower partition support member.

2. The large-diameter bored pile hole cleaning device under complex stratum conditions according to claim 1 is characterized in that: The upper support member includes an upper rotating support tube and a support leg, and the support leg is arranged on the upper rotating support tube; the support leg includes a first support tube, a second support tube and a first automatic telescopic rod, one end of the first support tube is arranged on the upper rotating support tube, one end of the second support tube is embedded in the other end of the first support tube, the bottom end of the first automatic telescopic rod is fixedly embedded in the first support tube, the top end of the first automatic telescopic rod is connected to the second support tube, and the other end of the second support tube is provided with a friction pad; The plurality of support legs are evenly distributed around the circumference of the upper rotating support tube; the upper rotating support tube is installed at the borehole opening through the plurality of support legs.

3. The large-diameter bored pile hole cleaning device under complex stratum conditions according to claim 2 is characterized in that: The hole cleaning and pouring rotary transmission member includes a rotary transmission member and a rotary power member, and the rotary transmission member and the rotary power member are both arranged on the upper support member; the rotary transmission member includes a first rotary transmission tube, a second rotary transmission tube, a third rotary transmission tube, a fourth rotary transmission tube, a fifth rotary transmission tube, a sixth rotary transmission tube, a seventh rotary transmission tube and an eighth rotary transmission tube, one end of the first rotary transmission tube is rotatably embedded in the upper rotary support tube, one end of the second rotary transmission tube is sleeved on the other end of the first rotary transmission tube, and the first sliding block on the second rotary transmission tube cooperates with the first sliding groove on the first rotary transmission tube, the first sliding groove is L-shaped as a whole, one end of the third rotary transmission tube is slidably sleeved on the other end of the second rotary transmission tube, and the fourth One end of the rotating transmission tube is slidably mounted on the other end of the third rotating transmission tube, one end of the fifth rotating transmission tube is slidably mounted on the other end of the fourth rotating transmission tube, one end of the sixth rotating transmission tube is slidably mounted on the other end of the fifth rotating transmission tube, one end of the seventh rotating transmission tube is slidably mounted on the other end of the sixth rotating transmission tube, one end of the eighth rotating transmission tube is slidably mounted on the other end of the seventh rotating transmission tube, and the other end of the eighth rotating transmission tube is hinged with a first one-way sealing plate; the rotating power component includes a motor, a first gear and a second gear, the motor is arranged on the supporting leg, the first gear is arranged on the rotating shaft of the motor, the second gear is fixedly mounted on the first rotating transmission tube, and the second gear is meshed with the first gear.

4. The large-diameter bored pile hole cleaning device under complex stratum conditions according to claim 3 is characterized in that: The lower partition support member includes a support plate, a support barrel, a sealing airbag, a first air supply hose, an upper sealing ring and a lower sealing ring. A lower rotating support tube is embedded at the center of the support plate. The support plate is rotatably sleeved on the outside of the eighth rotating transmission tube through the lower rotating support tube. One end of the support barrel is horizontally embedded in the support hole on the side wall of the support plate. The sealing airbag is annular and tubular. The inner annular surface of the sealing airbag is sleeved on the side wall of the support plate, and the inner annular surface of the sealing airbag is penetrated by the other end of the support barrel. The inner side wall of the outer annular surface of the sealing airbag is connected to the other end of the support barrel; one end of the first air supply hose penetrates outwardly through the side wall of one end of the first rotating transmission tube, and the other end of the first air supply hose penetrates outwardly through the side wall of the eighth rotating transmission tube; the upper sealing The sealing ring is rotatably sealed and sleeved on the outer wall of one end of the first rotating transmission tube, and the first gas delivery groove on the inner wall of the upper sealing ring is connected to one end of the first gas delivery hose; the upper sealing ring is connected with a second gas delivery hose, one end of the second gas delivery hose is connected to the first gas delivery groove, and the other end of the second gas delivery hose is connected to an air pressure pump; the lower sealing ring has the same structure as the upper sealing ring, the lower sealing ring is rotatably sealed and sleeved on the outer wall of the eighth rotating transmission tube, and the first gas delivery groove of the lower sealing ring is connected to the other end of the first gas delivery hose; the lower sealing ring is connected with a third gas delivery hose, one end of the third gas delivery hose is connected to the first gas delivery groove of the lower sealing ring, and the other end of the third gas delivery hose is connected to the bottom of the support hole.

5. The large-diameter bored pile hole cleaning device under complex stratum conditions according to claim 3 or 4, characterized in that: The rotating wall protection member includes a rotating wall protection seat and a wall protection smoothing member, the rotating wall protection seat is arranged on the rotating transmission member, and the wall protection smoothing member is arranged on the rotating wall protection seat; the rotating wall protection seat includes a rotating wall protection tube and a sliding transmission member, the sliding transmission member is arranged on the rotating wall protection tube, and the sliding transmission member includes a transmission fixed tube, a spring and a sliding transmission plate, one end of the transmission fixed tube passes through the rotating wall protection tube, the spring is embedded in the other end of the transmission fixed tube, one end of the sliding transmission plate is slidably embedded in one end of the transmission fixed tube, the other end of the sliding transmission plate is embedded in the second slide groove on the first rotating transmission tube, and the other end of the sliding transmission plate can slide from the second slide groove into the third slide groove on the second rotating transmission tube, and slide into the fourth slide groove on the third rotating transmission tube and the fifth slide groove on the fourth rotating transmission tube one by one. The cam is an arc-shaped member formed on the upper and lower surfaces of the second support tube, and the cam is an arc-shaped member formed on the upper and lower surfaces of the second support tube.

6. The large-diameter bored pile hole cleaning device under complex stratum conditions according to claim 4 is characterized in that: The wall protection power component includes a circumferential transmission component, a radial adjustment component, a steering control component and a tension transmission component, the circumferential transmission component is arranged on the upper support component, the radial adjustment component is arranged on the circumferential transmission component, the steering control component is arranged on the radial adjustment component, and the tension transmission component is arranged on the radial adjustment component; the circumferential transmission component includes a circumferential transmission seat, a circumferential sliding seat, a circumferential locking tube, a first magnetic coil and a circumferential locking shaft, the circumferential transmission seat is arranged on the lower side of the support leg, the circumferential sliding seat is embedded in the circumferential transmission seat, one end of the circumferential locking tube is through-set on the circumferential transmission seat, the first magnetic coil is embedded in the circumferential locking tube, the circumferential locking shaft is slidably embedded in the circumferential locking tube, and the circumferential locking shaft corresponds to the locking hole on the circumferential sliding seat.

7. The large-diameter bored pile hole cleaning device under complex stratum conditions according to claim 6 is characterized in that: The radial adjustment member includes a radial slide, a radial slider, a third automatic telescopic rod and a winding tube. The radial slide is in a C-shaped tube shape. The radial slide is radially arranged on the circumferential slide seat. The radial slider is slidably embedded in the radial slide seat. The bottom end of the third automatic telescopic rod is embedded in one end of the radial slide seat. The top end of the third automatic telescopic rod is connected to the radial slider. One end of the winding tube is arranged on the radial slider. Multiple sets of radial adjustment members are evenly distributed along the circumference of the circumferential slide seat. The steering control member includes a second magnetic coil and a steering control Rod, the second magnetic coil is embedded in the winding tube, the steering control rod is L-shaped, and one end of the steering control rod is slidably embedded in the winding tube; the tension transmission component includes a steel wire rope, a first steering wheel and a second steering wheel, one end of the steel wire rope is connected to one of the winding tubes, the first steering wheel is arranged on the eighth rotating transmission tube through a first fixed frame, and the second steering wheel is arranged on the first rotating transmission tube through a second fixed frame, and the other end of the steel wire rope is connected to the rotating wall protection seat after being turned by the first steering wheel and the second steering wheel.

8. The large-diameter bored pile hole cleaning device under complex stratum conditions according to claim 6 is characterized in that: The upper hole cleaning component includes a first slag suction pipe, a second one-way sealing plate, a second slag suction pipe, a first retractable fixed pipe, a third magnetic coil and a first retractable transmission shaft, one end of the first slag suction pipe penetrates into one end of the eighth rotating transmission pipe, one side of the second one-way sealing plate is hinged on a port of the first slag suction pipe, one end of the second slag suction pipe is slidably embedded in the other end of the first slag suction pipe, the first retractable fixed pipe is arranged on the first slag suction pipe, the third magnetic coil is embedded in the first retractable fixed pipe, one end of the first retractable transmission shaft is slidably embedded in the first retractable fixed pipe, and the other end of the first retractable transmission shaft is connected to the second slag suction pipe.

9. The large-diameter bored pile hole cleaning device under complex stratum conditions according to claim 6 is characterized in that: The bottom hole cleaning component includes a third slag suction pipe, a third one-way sealing plate, a fourth slag suction pipe, a second retractable fixed pipe, a fourth magnetic coil, a second retractable transmission shaft and a slurry relay pipe, one end of the third slag suction pipe penetrates into the other end of the eighth rotating transmission pipe, one side of the third one-way sealing plate is hinged on one end of the third slag suction pipe, one end of the fourth slag suction pipe is slidably embedded in the other end of the third slag suction pipe, the second retractable fixed pipe is arranged on the third slag suction pipe, the fourth magnetic coil is embedded in the second retractable fixed pipe, one end of the second retractable transmission shaft is slidably embedded in the second retractable fixed pipe, the other end of the second retractable transmission shaft is connected to the fourth slag suction pipe, and one end of the slurry relay pipe vertically penetrates the support plate, and its penetration point is close to the lower rotating support pipe.

10. A construction process for a large-diameter bored pile hole cleaning device under complex stratum conditions, using the large-diameter bored pile hole cleaning device under complex stratum conditions as described in any one of claims 4, 6-9, characterized in that: include: S1: hoisting a large-diameter bored pile cleaning device under the complex stratum condition into the borehole; S2: unfold the support legs and the lower partition support member, and adjust the rotating transmission member to the axis of the drilling hole; S3: starting the motor to rotate forward, and performing layered hole cleaning on the borehole through the upper hole cleaning member and the bottom hole cleaning member by the rotating transmission member, and blocking the bottom of the borehole by the lower partition support member; S4: the rotating transmission member rotated in the positive direction by the motor drives the rotating wall protection member to rotate circumferentially, and at the same time, the rotating wall protection member is driven by the wall protection power member to move downward to extrude and smooth the inner wall of the borehole; S5: After the mud residue on the bottom of the borehole and the lower partition support is cleaned, the support legs, the rotating wall protection member and the lower partition support are successively retracted radially to facilitate lowering the steel cage to a predetermined position; S6: pouring concrete to the bottom of the drill hole through the rotating transmission member, and rotating the rotating transmission member during the pouring process to stir the concrete through the bottom hole cleaning member; S7: After pouring to a predetermined depth, the motor is started to rotate in the opposite direction, thereby pulling the eighth rotating transmission tube to retract and rise along the axial direction; S8: After the casting of the borehole is completed by repeating S7, the large-diameter bored pile cleaning device under the complex stratum condition can be hoisted out from the borehole.

Images