Bored cast-in-place pile construction device

Abstract

The present invention discloses a construction device for bored cast-in-place piles, comprising: a connecting rod, at the bottom end of which there is a fixed plate; a plurality of water adding mechanisms, which are arranged at intervals on the outer edge of the fixed plate; a plurality of slag stirring mechanisms, which are arranged at intervals on the fixed plate, and the slag stirring mechanism includes a crushing shaft tube rotatably penetrating through the fixed plate, a rotation driving member for driving the crushing shaft tube to rotate, and a plurality of crushing pieces arranged around the circumferential side of the lower end of the crushing shaft tube; a plurality of slurry suction mechanisms, which correspondingly penetrate through a plurality of crushing shaft tubes, and the slurry suction mechanism is used for sucking the sediment at the bottom of the hole. The present invention has the beneficial effect of crushing and cleaning larger sediment at the bottom of the hole.

Description

Technical Field

[0001] The present invention relates to the technical field of bored pile construction, and more specifically, to a bored pile construction device. Background Art

[0002] A cast-in-place pile is a pile made by forming a hole in place and pouring concrete or reinforced concrete. Due to its advantages of no vibration, no soil squeezing, low noise, and suitability for use in densely built urban areas, cast-in-place piles are widely used in construction. Cast-in-place piles can be divided into bored cast-in-place piles, sunken pipe cast-in-place piles, artificially dug cast-in-place piles, explosive expansion cast-in-place piles, etc. according to the different hole forming methods.

[0003] Bored piles have been widely used in highway, railway bridges, high-rise and super-high-rise buildings, heavy structures and other structural engineering due to their mature construction technology, high bearing capacity and wide application range. Bored piles refer to piles formed in the foundation soil by mechanical drilling, steel pipe squeezing or manual excavation at the construction site, and placed in the piles by steel cages and poured concrete. The construction of bored piles has two types due to the different formation of their retaining walls: mud retaining wall method and full casing construction method. Among them, mud retaining wall construction method is mainly used for impact drilling, impact grab drilling and rotary drilling. The main process of this construction method is drilling into the hole, cleaning the hole and checking the quality of the hole, lowering the steel cage, and pouring underwater concrete. Among them, cleaning the hole is an important part of ensuring the quality of the pile in the construction of bored piles. It is used to remove the sediment at the bottom of the hole, reduce the settlement of the pile, and reduce the large amount of impurities that will enter the cast-in-place pile during pouring, which seriously affects the performance of the cast-in-place pile. At present, in the process of cleaning the bored pile hole, only small or light sediments can be cleaned. It is inconvenient to clean the larger sediments at the bottom of the hole, and there are phenomena of long hole cleaning time and incomplete hole cleaning. Therefore, it is worth considering how to design a bored pile construction device to obtain the beneficial effects of cleaning the larger sediments at the bottom of the hole, shortening the hole cleaning time, and cleaning the hole thoroughly. Summary of the invention

[0004] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0005] In order to achieve these purposes and other advantages according to the present invention, a bored pile construction device is provided, comprising:

[0006] A connecting rod, the bottom end of which is provided with a fixing plate;

[0007] A plurality of water adding mechanisms, wherein the plurality of water adding mechanisms are arranged at intervals at the outer edge of the fixing plate;

[0008] Multiple slag stirring mechanisms, which are arranged on the fixed plate at intervals. Each slag stirring mechanism includes a crushing shaft tube rotatably penetrating through the fixed plate, a rotation driving member for driving the crushing shaft tube to rotate, and a plurality of crushing pieces arranged around the circumference of the lower end of the crushing shaft tube.

[0009] Multiple slurry suction mechanisms, which are correspondingly arranged inside a plurality of crushing shaft tubes. The slurry suction mechanism is used to suck the sediment at the bottom of the hole.

[0010] Preferably, the water adding mechanism includes a water spraying pipe arranged on the outer peripheral wall of the connecting rod and a nozzle arranged at the lower end of the water spraying pipe. The nozzle is fixed at the outer edge of the fixed plate and is arranged towards the bottom of the drilling hole.

[0011] Preferably, the slurry suction mechanism includes:

[0012] A slurry suction pipe, which is coaxially arranged inside the crushing shaft tube and fixed on the fixed plate. The upper end of the slurry suction pipe extends out of the upper end of the crushing shaft tube, and a slag suction box is communicated and arranged at the upper end of the slurry suction pipe.

[0013] An air pipe, whose radial cross-section is in a shape similar to an L. The downstream end of the air pipe is communicated and arranged on the slurry suction pipe and is located at the part extending out of the upper end of the crushing shaft tube. A first one-way valve is arranged at the downstream end of the air pipe.

[0014] A high-pressure air pump, whose output end is communicated with the upstream end of the air pipe.

[0015] Preferably, the rotation driving member includes:

[0016] A first gear, which is coaxially and fixedly sleeved on the outer wall of the crushing shaft tube.

[0017] A plurality of rotating shafts, which are vertically arranged on the fixed plate. Second gears are arranged on the rotating shafts, and a plurality of second gears are meshed with the first gear at intervals.

[0018] A rotation driver, whose output end is connected to the lower end of the rotating shaft.

[0019] Preferably, it further includes an adjustment mechanism, which is arranged at the upper end of the connecting rod. The adjustment mechanism includes:

[0020] A hollow disc, which is coaxially arranged at the top of the hole. The inner diameter of the hollow disc is not less than the inner diameter of the hole. A pair of first slide rails are oppositely arranged on the hollow disc, and first sliders are slidably limited on the first slide rails.

[0021] A second slide rail, whose two ends are arranged on a pair of first sliders. The connecting rod is slidably limited on the second slide rail.

[0022] Preferably, a through groove is formed in the second slide rail along its length direction. A pair of third slide rails are oppositely arranged on both sides of the through groove on the second slide rail. A second slider is slidably limited on the pair of third slide rails. The top end of the connecting rod penetrates through the second slider and extends to the outside. A handle is arranged at the top end of the connecting rod.

[0023] Preferably, the slag collection box is an annular slag collection box, which is coaxially sleeved on the connecting rod, and the high-pressure air pump is placed on the annular slag collection box.

[0024] Preferably, a plurality of slurry through holes are formed at the bottom of the annular slag collection box. The upper ends of a plurality of slurry suction pipes are correspondingly inserted through the plurality of slurry through holes and extend to near the top of the slag collection box.

[0025] Preferably, a second one-way valve is arranged at the top end of the slurry suction pipe.

[0026] Preferably, the shape of the outer edge of the fixing plate is approximately arc-shaped.

[0027] The present invention has at least the following beneficial effects:

[0028] First, the present invention uses a slag stirring mechanism to crush the larger sediment at the bottom of the hole into fine sediment. At the same time, after adding water by the water adding mechanism, the slag stirring mechanism stirs the fine sediment and water into slurry, and then the slurry suction mechanism can suck the sediment at the bottom of the hole under the carrying of the slurry. The bored pile construction device of the present invention can clean the larger sediment at the bottom of the hole, with short hole cleaning time and thorough hole cleaning.

[0029] Second, the present invention uses an adjustment mechanism composed of a hollow disc, a pair of first slide rails, a first slider, a second slide rail, a third slide rail, and a second slider to change the positions of the slag stirring mechanism and the slurry suction mechanism at the bottom of the hole, so as to realize the crushing treatment and slag suction of the sediment at different positions at the bottom of the hole.

[0030] Third, the present invention uses the slurry suction mechanism to penetrate through the slag stirring shaft tube, so that the slurry suction mechanism does not affect the crushing treatment of the slag stirring mechanism during slurry suction, and is beneficial to reducing the volume of the bored pile construction device.

[0031] Other advantages, objectives, and features of the present invention will be partially reflected by the following description, and partially will be understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a side sectional view of the bored pile construction device according to one technical solution of the present invention;

[0033] Figure 2 It is a top view of the bored pile construction device according to one technical solution of the present invention;

[0034] Figure 3 Side structure schematic diagram of the slag stirring mechanism of one of the technical solutions of the present invention;

[0035] Figure 4 Top view of the annular slag collection box of one of the technical solutions of the present invention;

[0036] Figure 5 is Figure 1 Enlarged view of structure A in Detailed implementation mode

[0037] The following further describes the present invention in detail with reference to the drawings, so that those skilled in the art can implement it according to the description in the specification.

[0038] It should be noted that, unless otherwise specified, the experimental methods in the following embodiments are all conventional methods, and the reagents and materials, unless otherwise specified, can all be obtained from commercial channels; in the description of the present invention, the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does 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 cannot be construed as a limitation to the present invention.

[0039] As Figures 1 to 5 shown, the present invention provides a bored pile construction device, including:

[0040] Connecting rod 2, at the bottom end of which there is a fixing plate 3. The fixing plate 3 can be a cylinder or a cuboid-like shape. The fixing plate 3 can be fixedly arranged at the bottom end of the connecting rod 2 by welding, or can be detachably connected to the bottom end of the connecting rod 2 through a plurality of screw holes, bolts and nuts arranged at the bottom. The materials of the connecting rod 2 and the fixing plate 3 are stainless steel or carbon steel materials. Such materials make the connecting rod 2 and the fixing plate 3 have high strength and high hardness and are not easily deformed or even broken. Use a drilling machine to drill a hole at a selected position. After reaching a certain depth, a hole 1 is formed. Vertically send the connecting rod 2 into the hole 1 through a crane, and then the bored pile construction device can be placed in the hole 1 and the hole cleaning construction can be carried out;

[0041] A plurality of water adding mechanisms 22 are arranged at intervals on the outer edge of the fixing plate 3. The water adding mechanism 22 can be a water spray pipe 221 or composed of a spray head 222 and a water spray pipe 221. The water in the water spray pipe 221 in the water adding mechanism 22 can be supplied manually or by a water tank and a water pump in the water tank. The water adding mechanism 22 continuously or intermittently provides water at the bottom of the drill hole to prevent the original slurry and slag at the bottom of the hole 1 from being too thick;

[0042] Multiple slag stirring mechanisms 4 are spacedly arranged on the fixing plate 3. The slag stirring mechanism 4 includes a crushing shaft tube 41 rotatably penetrating through the fixing plate 3, a rotation driving member for driving the crushing shaft tube 41 to rotate, and multiple slag stirring pieces 42 annularly arranged on the circumferential side of the lower end of the crushing shaft tube 41. The slag stirring pieces 42 can be fixedly annularly arranged on the lower end of the crushing shaft tube 41. The slag stirring pieces 42 can also be cutting pieces. One end of the slag stirring piece 42 extending outwards has a certain sharpness. Multiple rotating holes are spacedly formed on the fixing plate 3. The crushing shaft tube 41 is movably penetrated through the rotating holes. The rotation driving member can be an AC servo motor, a rotary oil cylinder, a rotary motor, or a component formed by a gear rotary motor. The rotation driving member drives the crushing shaft tube 41 to rotate in the rotating holes on the fixing plate 3. The crushing shaft tube 41 drives the multiple slag stirring pieces 42 to rotate. The slag stirring pieces 42 use the acting force of rotation to crush the large-particle sediment at the bottom of the hole 1 into fine particles. After the water adding mechanism 22 adds water to the bottom of the hole 1, the slag stirring mechanism 4 can stir the fine-particle sediment and water together into mud;

[0043] Multiple slurry suction mechanisms are correspondingly penetrated through multiple crushing shaft tubes 41. The slurry suction mechanism is used to suck the sediment at the bottom of the hole 1. The slurry suction mechanism can be an air dredger, a conduit suction dredge pump, or a component composed of a slurry suction pipe 51, an air pipe 52, and a high-pressure air pump 53. After the slag stirring mechanism 4 crushes the large-particle sediment at the bottom of the hole 1 into fine particles and stirs it into mud with water, the slurry suction mechanism sucks the mud to the outside of the hole 1 or into the slag collection box 54. The slurry suction mechanism is arranged to penetrate through the crushing shaft tube 41, so that the slurry suction mechanism does not affect the crushing process of the slag stirring mechanism 4 during slurry suction and reduces the volume of the bored pile construction device; Before the slurry suction mechanism starts to work, the water adding mechanism 22 should be used to add water into the hole 1 first, and the water adding should be stopped after the slurry suction mechanism stops working to prevent the collapse of the hole caused by the reduction of the water head.

[0044] In the above technical solution, after using a drilling machine to drill a hole 1 at a selected position in structural engineering such as roads, bridges, and buildings, a crane is used to vertically send the connecting rod 2 into the hole 1 until the bottom of the slag stirring mechanism 4's stirring pieces 42 is close to the bottom of the hole 1 and contacts the larger sediment at the bottom of the hole 1. Then, the rotation driving member is started. The rotation driving member drives the stirring shaft tube to rotate on the fixing plate 3 and drives a plurality of stirring pieces 42 located on the peripheral side of the lower end of the stirring shaft tube to rotate. The stirring pieces 42 can crush the large-particle sediment in contact with them by using the force generated by the rotation and their own sharpness. After obtaining smaller-particle sediment, the water adding mechanism 22 is used to continuously add water to the bottom of the hole 1. Water can also be added before the crushing process to prevent the original slurry and sediment at the bottom of the hole 1 from being too thick and affecting the crushing effect of the slag stirring mechanism 4. The water and the smaller-particle sediment form slurry under the agitation of the slag stirring mechanism 4. Then, the slurry suction mechanism is started. The slurry suction mechanism can suck the slurry stirred by the crushing mechanism out of the hole 1 or into the slag collection box 54, thus achieving the effective cleaning of the larger sediment at the bottom of the hole. Moreover, while the slurry suction mechanism is working, the slag stirring mechanism 4 can continue to work to stir the slurry evenly so that the sediment is not easily deposited at the bottom, avoiding affecting the cleaning effect of the hole-bottom sediment by the bored pile construction device.

[0045] In another technical solution, the water adding mechanism 22 includes a water spraying pipe 221 provided on the outer peripheral wall of the connecting rod 2 and a spray head 222 provided at the lower end of the water spraying pipe 221. The spray head 222 is fixed at the outer edge of the fixing plate 3 and is arranged facing the bottom of the hole 1. The spray head 222 can be a stainless steel LNN type low-pressure atomizing spray head 222. The low-pressure atomizing spray head 222 helps to eliminate the static electricity of the ash-layer sediment, and the low pressure avoids the water directly impacting the bottom of the hole and affecting the structural stability of the bottom of the hole. The lower end of the water spraying pipe 221 can be fixed around or vertically on the outer peripheral wall of the connecting rod 2. After adding water to the water spraying pipe 221 manually or by a water pump, the water flows along the water spraying pipe 221 to the spray head 222 fixed at the outer edge of the fixing plate 3 and then flows to the bottom of the hole 1, realizing the beneficial effect of the water adding mechanism 22 adding water to the bottom of the hole 1. The arrangement of the spray head 222 facing the bottom of the hole 1 helps the water flowing out of the spray head 222 to directly act on the bottom of the hole instead of impacting the hole wall of the hole 1 and affecting the structure of the hole 1.

[0046] In another technical solution, the slurry suction mechanism includes:

[0047] The slurry suction pipe 51 is coaxially disposed within the crushing shaft pipe 41 and fixed to the fixing plate 3. The upper end of the slurry suction pipe 51 extends out of the upper end of the crushing shaft pipe 41. A slag suction box is communicatively provided at the upper end of the slurry suction pipe 51, and the slag suction box is used to collect the sediment sucked up from the bottom of the hole 1. The material of the slurry suction pipe 51 can be stainless steel or carbon steel. This material enables the slurry suction pipe 51 to have high strength and high hardness and withstand the impact of sediment in the slurry. The bottom of the slurry suction pipe 51 is flush with or slightly lower than the bottom of the crushing shaft pipe 41, and it cannot be directly adjacent to the bottom of the hole 1 to affect the slurry suction effect. The slurry suction pipe 51 can be coaxially disposed within the crushing shaft pipe 41 through the rotating hole on the fixing plate 3. During preparation, first pass the slurry suction pipe 51 through the rotating hole of the fixing plate 3, and then sleeved the crushing shaft pipe 41 on the slurry suction pipe 51.

[0048] The air pipe 52 has a radial cross-section in a shape similar to an L. The downstream end of the air pipe 52 is communicatively provided on the slurry suction pipe 51 and is located at the part extending out of the upper end of the crushing shaft pipe 41. A first one-way valve is provided at the downstream end of the air pipe 52. The downstream end of the air pipe 52 can also penetrate the slurry suction pipe 51 at the part extending out of the upper end of the crushing shaft pipe 41 and extend into the slurry. The air pipe 52 provides air with a certain pressure to the slurry suction pipe 51. The material of the air pipe 52 can be stainless steel or carbon steel. This material enables the air pipe 52 to have high strength and high hardness and withstand the pressure brought about by the gas pressure difference. The setting that the downstream end of the air pipe 52 is communicatively provided on the slurry suction pipe 51 at the part extending out of the upper end of the crushing shaft pipe 41 makes the air pipe 52 not deformed due to the rotation of the crushing shaft pipe 41, thus affecting the supply of air to the slurry suction pipe 51. The outlet of the first one-way valve can face the slurry suction pipe 51. The setting of the first one-way valve helps air to enter the slurry suction pipe 51 while preventing the slurry from entering the air pipe 52.

[0049] The output end of the high-pressure air pump 53 is communicatively connected to the upstream end of the air pipe 52. The high-pressure air pump 53 can also be an air compressor, and the air compressor can convert low-pressure air into high-pressure air. The high-pressure gas provided by the high-pressure air pump 53 enters the slurry through its output end, the air pipe 52 communicatively connected to the high-pressure air pump 53, and the slurry suction pipe 51 communicatively connected to the downstream end of the air pipe 52 and is mixed to generate negative pressure and use it to discharge the slurry and the carried sediment from the bottom of the hole 1 into the slag suction box.

[0050] In the above technical solution, the diameter of the slurry suction pipe 51 is 200 mm, the diameter of the air pipe 52 is 25 mm. It is optimal that the bottom of the slurry suction pipe 51 is 30 - 40 cm away from the bottom of the hole 1. The model of the high-pressure air pump 53 is EHS829, its negative pressure suction force is 29.5 kPa, the positive pressure blowing force is 39.5 kPa, and the maximum flow rate is 9.2 m 3 / min. Move the connecting rod 2 to the bottom of the slurry suction pipe 51 to extend into the slurry and be 30 cm away from the bottom of the hole 1, and start the high-pressure air pump 53. The high-pressure air provided by the high-pressure air pump 53 is sent into the hole 1 through the air pipe 52 and the slurry suction pipe 51. The high-pressure air mixes with the slurry to form a slurry-air mixture with a density less than that of the slurry in the slurry suction pipe 51. The slurry-air mixture rises due to its small specific gravity, forming a negative pressure at the bottom end of the slurry suction pipe 51. The following slurry continuously rises under the action of the negative pressure and continuously replenishes the slurry under the combined action of the air pressure momentum. The slurry and gas continuously form a gas-slurry mixture after rising to the downstream end of the air pipe 52 and continue to rise until the slurry and the sediment carrying fine particles are discharged from the hole 1 into the slag suction box or closed container at the upper end, and the slurry suction mechanism can complete the suction of the fine sediment.

[0051] In another technical solution, the rotation driving member includes:

[0052] A first gear 43, which is coaxially and fixedly sleeved on the outer wall of the crushing shaft tube 41. The first gear 43 can be a straight-tooth gear or a helical gear. The first gear 43 is fixedly sleeved on the outer wall of the crushing shaft tube 41 by welding. Rotating the first gear 43 can drive the crushing shaft tube 41 fixedly connected thereto and the crushing pieces 42 provided at the lower end of the crushing shaft tube 41 to rotate;

[0053] Multiple rotating shafts 45 are vertically arranged on the fixing plate 3. Second gears 44 are provided on the rotating shafts 45. Multiple second gears 44 are meshed with the first gear 43 at intervals. The second gears 44 can be straight-tooth gears or helical gears. The second gears 44 can be fixedly sleeved on the upper ends of the rotating shafts 45 by welding. Synchronously rotating the multiple rotating shafts 45 can drive the second gears 44 located at the upper ends of the rotating shafts 45 to rotate horizontally. The rotation of the second gears 44 can cause the first gear 43 meshed therewith to rotate, thereby driving the crushing shaft tube 41 to rotate;

[0054] A rotating drive 46, whose output end is connected to the lower end of the rotating shaft 45, with the output end of the rotating drive 46 facing upward. The rotating drive 46 can be an AC servo motor, a rotary oil cylinder, or a rotary motor. The number of rotating drives 46 corresponding to multiple rotating shafts 45 can be multiple. The multiple rotating drives are respectively connected to the lower end of the rotating shaft 45 through their output ends and can synchronously drive the rotating shaft 45 to rotate, achieving the driving rotation of the rotating shaft 45.

[0055] In the above technical solution, the rotating drive 46 can be a 17H2060 type rotary motor. Start the rotating drive 46, and its output end drives the rotating shaft 45 to rotate, thereby driving the second gear 44 to rotate horizontally. Utilize the meshing transmission between the second gear 44 and the first gear 43 to drive the first gear 43 to rotate, and further cause the crushing shaft tube 41 fixedly connected to the first gear 43 to rotate. The rotating drive member composed of the rotating drive 46, the rotating shaft 45, the second gear 44, and the first gear 43 provides driving force for realizing the rotation of the crushing shaft tube 41 through rotational drive combined with gear transmission.

[0056] In another technical solution, it further includes an adjustment mechanism, which is arranged at the upper end of the connecting rod 2. The adjustment mechanism includes:

[0057] A hollow disk 6, which is coaxially arranged at the top of the hole 1. The inner diameter of the hollow disk 6 is not less than the inner diameter of the hole 1. A pair of first slide rails 61 are oppositely arranged on the hollow disk 6. A first slider is limited to slide on the first slide rails 61. The first slider can be limited to slide on the first slide rails 61 through a screw hole, a bolt, and a nut. The first slide rails 61 can be arranged at the upper end of the hollow disk 6. Multiple counterweights can be arranged on the hollow disk 6 to increase the stability of the hollow disk 6 to prevent the hollow disk 6 from moving when the first slider moves;

[0058] A second slide rail 62, whose two ends are arranged on a pair of first sliders. The connecting rod 2 is limited to slide on the second slide rail 62. The second slide rail 62 can be perpendicular or inclined to the pair of first slide rails 61. The second slide rail 62 can be fixedly welded to the upper end of the first slider or on one side where the two first sliders face each other. The connecting rod 2 can be limited to slide on the second slide rail 62 through a combination of a chute slider or a through slot 63 slide rail slider and a screw hole, a bolt, and a nut.

[0059] In the above technical solution, the crane is used to move the hollow disc 6 to the top of the hole 1. The first slider is limited and slidably arranged on the first slide rail 61, so that the second slide rail 62 with both ends arranged on a pair of first sliders can be limited and slid along the direction of the first slide rail 61. Combined with the connecting rod 2 which is limited and slidably arranged on the second slide rail 62, the position of the connecting rod 2 in the hole 1 can be adjusted. Furthermore, the slag stirring mechanism 4 and the slurry suction mechanism connected to the connecting rod 2 through the fixing plate 3 can crush and suck the sediment at different positions at the bottom of the hole 1. The inner diameter of the hollow disc 6 is greater than or equal to the inner diameter of the hole 1 and is coaxially arranged with the hole 1, which is beneficial to the all-round movement of the connecting rod 2 in the hole 1, so that the slag stirring mechanism 4 and the slurry suction mechanism can crush and suck the sediment at the bottom of the hole 1 all-round without being restricted by the sliding positions of the first slider and the second slide rail 62.

[0060] In another technical solution, a through groove 63 is formed along the length direction of the second slide rail 62. A pair of third slide rails are oppositely arranged on both sides of the through groove 63 on the second slide rail 62. A second slider 64 is limited and slidably arranged on the pair of third slide rails. The top end of the connecting rod 2 penetrates through the second slider 64 and extends to the outside. A handle 21 is arranged at the top end of the connecting rod 2. The pair of third slide rails can be fixedly arranged on the second slide rail 62 by welding. The second slider 64 can be limited and slid on the pair of third slide rails by setting screw holes, bolts and nuts on the second slider 64, the second slide rail 62 and the third slide rails. The top end of the connecting rod 2 penetrates through the second slider 64 and extends to the outside. By moving the second slider 64 along the direction of the third slide rail, the movement of the connecting rod 2 can be driven. The handle 21 helps the second slider 64 to slide on the third slide rail. The connecting rod 2 can be limited and movably penetrated through the second slider 64. The connecting rod 2 can be limited and movably penetrated through the second slider 64 by screw holes, bolts and nuts. The depth of the connecting rod 2 extending into the hole 1 can be adjusted by the limited position of the connecting rod 2 and the second slider 64, so as to realize that the slag stirring mechanism 4 can crush the sediment in the hole 1 at different depths. The size of the handle 21 can be larger than that of the second slider 64 to prevent the connecting rod 2 from detaching from the second slider 64 due to instability when the connecting rod 2 is limited and movably penetrated through the second slider 64.

[0061] In another technical solution, it is characterized in that the slag collection box 54 is an annular slag collection box 54, which is coaxially sleeved on the connecting rod 2. The high-pressure air pump 53 is placed on the annular slag collection box 54. The setting that the slag collection box 54 is an annular slag collection box 54 and is coaxially sleeved on the connecting rod 2 helps that a plurality of slurry suction pipes 51 can be uniformly communicated with the annular slag suction box, without the need to arrange a plurality of slag collection boxes 54; placing the high-pressure air pump 53 on the annular slag collection box 54 helps to reduce the length of the air pipe 52, so that the high-pressure air provided by the high-pressure air pump 53 can be mixed with the slurry faster, and the high-pressure air maintains a certain pressure during mixing, which is conducive to improving the slag suction efficiency and shortening the hole cleaning time.

[0062] In another technical solution, a plurality of slurry through holes 541 are opened at the bottom of the annular slag collection box 54. The upper ends of a plurality of slurry suction pipes 51 correspondingly penetrate through the plurality of slurry through holes 541 and extend to near the top of the slag collection box 54. The slurry through holes 541 are adapted to the slurry suction size. The slurry suction pipes 51 are fixedly penetrated through the slurry through holes 541 so that the slurry suction pipes 51 are communicated with the annular slag collection box 54. The setting that the upper ends of the slurry suction pipes 51 penetrate through the slurry through holes 541 and extend to near the top of the slag collection box 54 helps the slurry to enter the annular slag collection box 54 and prevent the slurry from flowing back into the hole 1 through the slurry suction pipes 51 within a certain range.

[0063] In another technical solution, a second one-way valve is provided at the top end of the slurry suction pipe 51. The outlet of the second one-way valve can face the top of the annular slag suction box. The setting of the second one-way valve further helps to prevent the slurry from flowing back into the hole 1 through the slurry suction pipe 51 after entering the annular slag collection box 54.

[0064] In another technical solution, the shape of the outer edge of the fixing plate 3 is quasi-arc-shaped, and the quasi-arc shape can be adapted to the arc shape of the edge of the hole 1, so that when the fixing plate 3 moves close to the wall of the hole 1, it can be in complete contact with the wall of the hole 1 without dead corners. The setting that the shape of the outer edge of the fixing plate 3 is quasi-arc-shaped helps the slag stirring mechanism 4 and the slurry suction mechanism on the fixing plate 3 to completely crush and suck the sediment at the bottom of the hole 1 in all directions without dead corners between the outer edge of the fixing plate 3 and the wall of the hole 1.

[0065] Although the embodiments of the present invention have been disclosed as above, they are not limited to only the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, other modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples here.

Claims

1. Drilling cast-in-place pile construction device, characterized in that, Comprising: A connecting rod, at the bottom end of which there is a fixed plate; A plurality of water adding mechanisms, which are arranged at intervals on the outer edge of the fixed plate. The water adding mechanism includes a water spraying pipe arranged on the outer peripheral wall of the connecting rod and a nozzle arranged at the lower end of the water spraying pipe. The nozzle is fixed at the outer edge of the fixed plate and is arranged towards the bottom of the drilling hole; A plurality of slag stirring mechanisms, which are arranged at intervals on the fixed plate. The slag stirring mechanism includes a crushing shaft tube rotatably penetrating through the fixed plate, a rotation driving member for driving the crushing shaft tube to rotate, and a plurality of crushing pieces arranged around the circumferential side of the lower end of the crushing shaft tube; A plurality of slurry suction mechanisms, which correspondingly penetrate through a plurality of crushing shaft tubes. The slurry suction mechanism is used for sucking the sediment at the bottom of the hole. The slurry suction mechanism includes: A slurry suction pipe, which coaxially penetrates through the crushing shaft tube and is fixed on the fixed plate. The upper end of the slurry suction pipe extends out of the upper end of the crushing shaft tube, and a slag suction box is communicated and arranged at the upper end of the slurry suction pipe; An air pipe, the radial cross-section of which is in a shape similar to an L shape. The downstream end of the air pipe is communicated and arranged on the slurry suction pipe and is located at the part extending out of the upper end of the crushing shaft tube. A first one-way valve is arranged at the downstream end of the air pipe; A high-pressure air pump, the output end of which is communicated with the upstream end of the air pipe; It further includes an adjustment mechanism, which is arranged at the upper end of the connecting rod. The adjustment mechanism includes: A hollow disc, which is coaxially arranged at the top of the hole. The inner diameter of the hollow disc is not less than the inner diameter of the hole. A pair of first slide rails are oppositely arranged on the hollow disc, and a first slider is slidably limited on the first slide rails; A second slide rail, the two ends of which are arranged on a pair of first sliders. The connecting rod is slidably limited on the second slide rail.

2. The bored cast-in-place pile construction device according to claim 1, wherein, The rotation driving member includes: A first gear, which is coaxially and fixedly sleeved on the outer wall of the crushing shaft tube; A plurality of rotating shafts, which are vertically arranged on the fixed plate. A second gear is arranged on the rotating shaft, and a plurality of second gears are meshed with the first gear at intervals; A rotation driver, the output end of which is connected with the lower end of the rotating shaft.

3. The bored cast-in-place pile construction device according to claim 1, characterized in that, A through groove is opened along the length direction of the second slide rail. On the second slide rail, a pair of third slide rails are oppositely arranged on both sides of the through groove. A second slider is slidably limited on the pair of third slide rails. The top end of the connecting rod penetrates through the second slider and extends to the outside, and a handle is arranged at the top end of the connecting rod.

4. The bored cast-in-place pile construction device according to claim 1, characterized in that, The slag suction box is an annular slag collection box, which is coaxially sleeved on the connecting rod, and the high-pressure air pump is placed on the annular slag collection box.

5. The bored cast-in-place pile construction device according to claim 4, characterized in that, A plurality of slurry through holes are opened at the bottom of the annular slag collection box. The upper ends of a plurality of slurry suction pipes correspondingly penetrate through the plurality of slurry through holes and extend to near the top of the collection box.

6. The bored cast-in-place pile construction device according to claim 5, characterized in that, A second one-way valve is arranged at the top end of the slurry suction pipe.

7. The bored cast-in-place pile construction device according to claim 1, wherein, The shape of the outer edge of the fixed plate is similar to an arc.

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