Overwater cast-in-situ bored pile construction device for engineering construction and using method thereof

Abstract

The invention relates to the technical field of overwater construction devices, and discloses an overwater cast-in-situ bored pile construction device for engineering construction and a using method of the overwater cast-in-situ bored pile construction device. The overwater cast-in-situ bored pile construction device structurally comprises a rotary excavating mechanism, a small mechanical arm, a rotator, a large mechanical arm and an excavating main body; when the sleeve is lifted up, soil is automatically blocked through the opening and closing mechanism, the effect of automatically discharging the soil at the drilling position in the rotary excavating process is achieved, efficient drilling of continuous rotary excavating of the sleeve in one direction is formed, and the problem that the efficiency of intermittent rotary excavating of the sleeve in the forward direction and the reverse direction is low is solved; the second cylinder and the first cylinder slide relative to each other, the water outlet is communicated with the corresponding flow guide structure, the surface plates distributed in a staggered mode prevent most of soil from surging upwards, the filter plates block large-particle impurities and sandy soil to a certain degree, and then most of water is guided to the water outlet from the flow guide structure to be discharged. And most of water is prevented from being lifted and transferred along with the soil when the soil is dug.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of water construction device, and particularly relates to a water bored pile construction device for engineering construction and a use method thereof. BACKGROUND

[0002] The construction of the bored pile is performed underwater, and the underwater drilling is performed by the construction device fixed on the ship body. When drilling, the drilling is rotated downward by the rotary digging method, and the inner protection cylinder is placed in the hole. When pouring the bored pile, the concrete flows into the partition steel protection cylinder through the overflow hole at the top of the inner protection cylinder, and is pumped to the mud ship by the mud pump. The permanent steel protection cylinder of the bored pile is vibrated and punched into the water from the deck ship by the puncher. On land, there are park greenway footpaths, military management areas and Zhiguan villa areas along the river. There is no construction access on land. The steel protection cylinder, steel reinforcement cage and concrete of the bored pile are all transported to the construction site on water. The rotary drilling rig is used to rotate and dig the hole on water (combined mechanical pile ship integration).

[0003] However, when rotary drilling is performed, most of the soil is in the pipe. When the soil is pulled up, the bottom of the pipe has a support soil that brings the opening and closing plate. The prior art opens and closes the bottom opening and closing plate by circuit control. During the rotary digging process, the circuit for controlling the opening and closing plate is prone to line entanglement, so that the rotary drilling can only be rotated downward by intermittent forward and reverse rotation, which is not easy to continuously rotate, the rotary digging efficiency is low, and the control line of the opening and closing plate is repeatedly twisted and damaged. After the pipe is rotary dug, most of the water enters the pipe and is brought out with the soil. Too much water can easily dilute the amount of soil in the pipe and cause strong fluidity, affecting the piling of the soil. SUMMARY

[0004] To solve the above problems, the present application discloses a water bored pile construction device for engineering construction and a use method thereof, which is scientific in structure, convenient to use, and convenient for the water in the sleeve to flow out when the sleeve is lifted, thereby avoiding the most water from being lifted and transferred with the soil when the soil is dug.

[0005] To achieve the above purpose, the technical scheme of the present application is as follows: A water bored pile construction device for engineering construction, comprising a rotary digging mechanism, a mechanical arm, a rotator, a mechanical arm and a digging main body. The mechanical arm swings up and down in the digging main body. The mechanical arm swings at the outer end of the mechanical arm. The rotator rotates at the lower end of the mechanical arm. The digging main body is provided with a control room. The mechanical arm, the rotator and the mechanical arm are driven by the control room electrical signal, and the rotator clamps the rotary digging mechanism to rotate downward. The rotary digging mechanism is provided with an opening and closing mechanism, a sleeve, a fixed block, a sliding plate, a center rod and a track strip, the lower end of the fixed block is fixed with the center rod, the center rod is located at the center axis position of the sleeve, the sliding plate fixed outside the center rod slides on the track strip inside the sleeve, the opening and closing mechanism is fixed at the lower end of the center rod, and the underwater soil blocks the opening and closing mechanism and makes it tilt upward when the fixed block is rotated downward.

[0006] Further, the opening and closing mechanism is provided with a rotating plate, a conversion mechanism and a sealing strip, the conversion mechanism and the rotating plate are each provided with four, which are arranged in an annular array outside the center rod, and the rotating plate is hinged to rotate 60° outside the center rod, the sealing strip is attached inside the sleeve, and the outside of the rotating plate elastically presses the sealing strip, and the side of the rotating plate is provided with a sliding groove corresponding to the side of the conversion mechanism.

[0007] Further, the conversion mechanism is provided with a spring, a transmission structure, a force receiving rod and a trapezoidal plate, the force receiving rod slides in the trapezoidal plate at an angle of 10°, one end of the spring is fixed outside the force receiving rod, and the other end is fixed inside the trapezoidal plate, when the force receiving rod slides, the spring is compressed, and the force receiving rod presses the transmission structure through the elasticity of the spring, and the transmission structure rotates counterclockwise in the trapezoidal plate, the trapezoidal plate is arranged inside the sleeve, the outside of the center rod is provided with a hollow groove corresponding to the outer end of the force receiving rod, when the center rod moves downward, the force receiving rod slides from the hollow groove to the outside of the center rod, and the force receiving rod compresses the spring, and drives the force receiving rod to elastically press the lower end of the transmission structure, at this time, the transmission structure rotates counterclockwise, and the transmission structure lifts the rotating plate to tilt.

[0008] Further, the transmission structure is provided with a rotating ring, a metal plate, a force receiving plate and a sliding rod, the force receiving plate and the metal plate are in a right angle state, one end of the sliding rod presses the force receiving plate, and the metal plate and the force receiving plate rotate in the trapezoidal plate with the rotating ring as the center, the sliding rod is arranged at the outer end of the metal plate, and the sliding rod slides in the sliding groove on the side of the adjacent rotating plate, and the sliding rod tilts the rotating plate when it rotates.

[0009] Further, the sleeve is provided with a water outlet, a first cylinder, a second cylinder and a flow guide structure, the water outlet is arranged in the first cylinder at an angle of 50°, and the second cylinder is provided with a flow guide structure corresponding to the water outlet inside the second cylinder, the second cylinder and the first cylinder slide vertically, when the first cylinder moves upward, the second cylinder slides downward under the action of gravity, and the flow guide structure is connected to the water outlet.

[0010] Further, the flow guide structure is provided with a flat plate, a flow-through hole and a filter plate, the flat plates are arranged in a horizontal state in the flow-through hole, and the filter plate is arranged between the two lowermost flat plates to block the water flowing upward from below.

[0011] The application discloses a use method of a water drilling bored pile construction device for engineering construction. S1: the driver controls the mechanical arm and the mechanical arm to drive the rotary excavating mechanism at the lower end of the rotary device, and controls the rotary device to rotate the rotary excavating mechanism, so that the rotary excavating mechanism excavates downward, at this time, the opening and closing mechanism is inclined upward under the resistance of the underwater soil, and the fixed block is vertically slid in the track bar through the outer slide plate of the center rod, so that the soil and water enter above the opening and closing mechanism; S2: when the fixed block moves upward, the slide plate slides upward in the track bar, and the sleeve is separated from the water, at this time, the opening and closing mechanism is reset to the horizontal state under the gravity of the soil above to block the soil; S3: after the soil is excavated, the soil drives the opening and closing mechanism to move downward under the gravity, the lower end of the sleeve is placed on the ground, and the hollow groove of the center rod is separated from the corresponding position of the force rod under the resistance of the ground, then the outer side of the center rod presses the force rod, and the force rod extrudes the transmission structure under the elasticity of the spring, and drives the transmission structure to rotate; S4: the rotation of the transmission structure makes the slide rod slide in the adjacent rotating plate, and drives the rotating plate to tilt upward, at this time, the rotating plate extrudes the soil upward, and the rotating plate and the conversion mechanism are dislocated, so that the soil falls downward from the dislocation position.

[0012] The application has the advantages that: In the application, the center rod moves downward with the fixed block under the gravity of the soil, the hollow groove is separated from the corresponding position of the outer end of the force rod, the outer side of the center rod extrudes the force rod, the rotating plate is inclined upward, the rotating force of the metal plate is converted into the lifting support force on the rotating plate, the rotating plate is automatically inclined upward, and the soil is conveniently discharged, In the application, the soil is automatically discharged above the opening and closing mechanism, the soil is automatically blocked by the opening and closing mechanism when the sleeve is lifted, the opening and closing mechanism is automatically opened and closed to discharge the soil after the sleeve is placed on the ground, the soil at the drilling position is automatically discharged in the rotary excavating process, the circuit control is avoided to block and discharge the soil, the sleeve can be continuously rotated without rotating and twisting the circuit control line, the sleeve is continuously excavated in one direction to realize high-efficiency drilling, and the problem of low efficiency of the intermittent rotary excavation of the sleeve in the forward and reverse directions is solved.

[0013] When the sleeve is inserted into the soil, the water outlet and the flow guide structure are in a dislocation state, at this time the sleeve forms a water blocking effect to the outside, and when the first cylinder is lifted up, the second cylinder and the first cylinder slide with each other, and the water outlet is connected to the flow guide structure, at this time the water in the inside of the second cylinder will flow out through the flow guide structure, so that the water in the inside flows out when the sleeve is lifted up, at this time the water flows out from the position of the flow guide structure, and the staggered distribution of the plane plate blocks most of the soil from flowing up, and the filter plate blocks most of the water from flowing out through the flow guide structure, avoiding most of the water from being lifted up with the soil. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole diagram of the present application.

[0015] Figure 2 It is a side view of the rotary digging mechanism.

[0016] Figure 3 It is a plane view of the opening and closing mechanism.

[0017] Figure 4 It is a side view of the three-dimensional conversion mechanism of the center rod.

[0018] Figure 5 It is a three-dimensional view of the conduction structure.

[0019] Figure 6 It is a partial side view of the sleeve.

[0020] Figure 7 It is a side view of the flow guide structure.

[0021] LIST OF FIGURES Rotary digging mechanism-1, mechanical arm-2, rotary-3, mechanical arm-4, digging main body-5, opening and closing mechanism-11, sleeve-12, fixed block-13, sliding plate-14, center rod-15, track bar-16, rotating plate-111, conversion mechanism-112, sealing strip-113, spring-121, conduction structure-122, force receiving rod-123, trapezoidal plate-124, rotating ring-21, metal plate-22, force receiving plate-23, sliding rod-24, water outlet-31, first cylinder-32, second cylinder-33, flow guide structure-34, plane plate-41, flow-through hole-42, filter plate-43. DETAILED DESCRIPTION

[0022] The present application will be further illustrated below in conjunction with the drawings and specific embodiments, and it should be understood that the following specific embodiments are only used to illustrate the present application and not to limit the scope of the present application.

[0023] As shown in the figure, the water drilling pile construction device for engineering construction of the present application comprises a rotary digging mechanism 1, a mechanical arm 2, a rotary device 3, a mechanical arm 4 and a digging main body 5. The mechanical arm 4 swings up and down in the digging main body 5. The mechanical arm 2 swings hydraulically at the outer end of the mechanical arm 4. The rotary device 3 rotates and moves at the lower end of the mechanical arm 2. The digging main body 5 is provided with a control room. The mechanical arm 2, the rotary device 3 and the mechanical arm 4 are driven by the electrical signal of the control room, and the rotary device 3 clamps the rotary digging mechanism 1 to rotate and dig downward. The rotary digging mechanism 1 is provided with an opening and closing mechanism 11, a sleeve 12, a fixed block 13, a sliding plate 14, a center rod 15 and a track strip 16. The lower end of the fixed block 13 is fixed with the center rod 15, and the center rod 15 is located at the center axis position of the sleeve 12. The sliding plate 14 fixed outside the center rod 15 slides on the track strip 16 inside the sleeve 12. The opening and closing mechanism 11 is fixed at the lower end of the center rod 15. When the fixed block 13 rotates and digs downward, the underwater soil blocks the opening and closing mechanism 11 and makes it tilt upward and open.

[0024] In addition, the fixed block 13 is fixed by the lower end of the rotary device 3 and is driven. When the center rod 15 at the lower end of the fixed block 13 drives the sliding plate 14 outside to slide on the track strip 16, the sleeve 12 outside the track strip 16 moves in turn. When the fixed block 13 moves downward, the sleeve 12 is first inserted into the soil, and then the soil again generates an upward thrust below the opening and closing mechanism 11.

[0025] The opening and closing mechanism 11 is provided with a rotating plate 111, a conversion mechanism 112 and a sealing strip 113. The conversion mechanism 112 and the rotating plate 111 are each provided with four, which are arranged in an annular array outside the center rod 15. The rotating plate 111 is hinged to rotate 60° outside the center rod 15. The sealing strip 113 is attached inside the sleeve 12, and the outside of the rotating plate 111 elastically presses the sealing strip 113 correspondingly. The side of the rotating plate 111 is provided with a sliding groove corresponding to the side of the conversion mechanism 112.

[0026] In addition, the sealing strip 113 is made of rubber material, which has the effect of sealing the outside of the rotating plate 111 to avoid a large gap caused by the inclined rotation of the rotating plate 111. When the rotating plate 111 rotates, the outside of the rotating plate 111 is separated from the sealing strip 113, and the Figure 3 The topmost figure is a sliding groove, which is distributed on the left and right sides of the rotating plate 111.

[0027] The conversion mechanism 112 is provided with a spring 121, a conducting structure 122, a force receiving rod 123 and a trapezoidal plate 124. The force receiving rod 123 is obliquely slid in the trapezoidal plate 124 by 10°, and one end of the spring 121 is fixed outside the force receiving rod 123 and the other end is fixed inside the trapezoidal plate 124. When the force receiving rod 123 is slid, the spring 121 is compressed, and the force receiving rod 123 is pressed against the conducting structure 122 through the elasticity of the spring 121, and the conducting structure 122 is counterclockwise rotated in the trapezoidal plate 124. The trapezoidal plate 124 is arranged inside the sleeve 12. The hollow groove corresponding to the outer end of the force receiving rod 123 is arranged outside the central rod 15. When the central rod 15 is downwardly moved, the force receiving rod 123 is slid from the hollow groove to the outside of the central rod 15, and the force receiving rod 123 is compressed against the spring 121, and the force receiving rod 123 is elastically pressed against the lower end of the conducting structure 122. At this time, the conducting structure 122 is counterclockwise rotated, and the conducting structure 122 lifts the rotating plate 111 to be inclined.

[0028] In addition, the lower surface of the trapezoidal plate 124 is inclined, so that the sleeve 12 is inclined to the direction of the central rod 15, and the soil is moved to the middle of the central rod 15, avoiding the soil from being easily accumulated on the periphery and affecting the entering of the opening and closing mechanism 11.

[0029] In the present application, when the central rod 15 is downwardly moved with the fixed block 13, the soil generates upward pushing force to the rotating plate 111. At this time, the hollow groove on the side of the central rod 15 is moved, and the hollow groove is separated from the corresponding position of the outer end of the force receiving rod 123, so that the outer side of the central rod 15 is pressed against the force receiving rod 123, facilitating the upward inclination and rotation of the rotating plate 111. In addition, the connection part of the rotating plate 111 is downwardly moved, and the conversion mechanism 112 is in a fixed state. The rotating force generated by the upward rotation of the conducting structure 122 is transmitted to the rotating plate 111, so that the left and right ends of the rotating plate 111 generate downward and upward forces, and the rotating plate 111 generates upward pressing force to the soil, facilitating the discharge of the soil. Thus, in the rotary digging process, the soil is automatically moved to the upper side of the opening and closing mechanism 11. When the sleeve 12 is lifted, the soil is automatically blocked by the opening and closing mechanism 11. After the sleeve 12 is placed on the ground, the opening and closing mechanism 11 is automatically opened and closed to discharge the soil. The effect of automatically discharging the soil at the drilling position in the rotary digging process is achieved, avoiding the inconvenience of the soil blocking and discharging by the circuit control. The sleeve 12 can be continuously rotated without rotating and twisting the circuit control line, forming the high-efficiency drilling of the sleeve 12 in one direction, and preventing the problem of low efficiency of the intermittent rotary digging of the sleeve 12 in the forward and reverse directions.

[0030] The conducting structure 122 is provided with a rotating ring 21, a metal plate 22, a stress plate 23 and a sliding rod 24, the stress plate 23 and the metal plate 22 are in a right angle state, one end of the stress rod 123 presses the stress plate 23, and the metal plate 22 and the stress plate 23 rotate in the trapezoidal plate 124 with the rotating ring 21 as the center, the sliding rod 24 is arranged at the outer end of the metal plate 22, and the sliding rod 24 slides in the sliding groove on the side of the adjacent rotating plate 111 and makes the sliding rod 24 rotate to lift the rotating plate 111 to tilt and move.

[0031] The stress plate 23 and the metal plate 22 rotate in the gap between the conversion mechanism 112 and the rotating plate 111, and the rotating ring 21 rotates in the trapezoidal plate 124 by using a bearing, the stress plate 23 is in an “L” shape, the position of the bottom part is close to the inner side of the trapezoidal plate 124 to contact the pressing force of the stress rod 123, and the vertical part of the stress plate 23 and the metal plate 22 are in a thin state, which facilitates rotation in the gap between the rotating plate 111 and the conversion mechanism 112, so that the metal plate 22 drives the sliding rod 24 to slide in the sliding groove on the side of the rotating plate 111, at this time the rotating force of the metal plate 22 is converted into the lifting support force on the rotating plate 111, and the rotating plate 111 automatically produces upward tilt opening, which facilitates soil discharge.

[0032] The sleeve 12 is provided with a water outlet 31, a first cylinder 32, a second cylinder 33 and a flow guide structure 34, the water outlet 31 is arranged in the first cylinder 32 at an inclination of 50°, and the second cylinder 33 is provided with the flow guide structure 34 corresponding to the water outlet 31 at an inclination, the second cylinder 33 vertically slides between the first cylinder 32, when the first cylinder 32 moves upward, the second cylinder 33 slides downward under the action of gravity, and the flow guide structure 34 is connected to the water outlet 31.

[0033] The lower end of the first cylinder 32 is in an “L” shape, and the outer side of the second cylinder 33 is provided with a sliding groove corresponding to the “L” shape of the first cylinder 32, when the second cylinder 33 slides downward, the “L” shape of the first cylinder 32 protrudes in the sliding groove, and after sliding, the second cylinder 33 is hung on the “L” shape protruding position of the lower end of the first cylinder 32 through the sliding groove, avoiding the second cylinder 33 from separating from the first cylinder 32 when sliding downward.

[0034] The flow guide structure 34 is provided with a flat plate 41, a flow-through hole 42 and a filter plate 43, the flat plates 41 are horizontally staggered in the flow-through hole 42, two flat plates 41 at the lowermost end are provided with a filter plate 43, and the filter plate 43 blocks the water flowing upward from below.

[0035] And, the filter plate 43 is of sponge material, and has a large gap inside, and has the effect of blocking large particles, and the filter plate 43 is below the opening of the flow guide structure 34, and the filter plate 43 can filter and block the water flowing upwards at the opening of the flow guide structure 34.

[0036] And, the staggered distribution of the flat plate 41 can block the flow of water to a certain extent, and can discharge the water flow above the position of the flow guide structure 34, and the flow guide structure 34 and the water outlet 31 are located in the upper half of the whole, reducing the contact with the soil below, and the upper half of the sleeve 12 is mainly a mixture of mud and water when it is pulled out of the water.

[0037] In the present application, when the sleeve 12 is inserted into the soil, the water outlet 31 and the flow guide structure 34 are in a staggered state, at this time the sleeve 12 forms a water blocking effect to the outside, and when the first cylinder 32 is pulled up, the second cylinder 33 and the first cylinder 32 slide with each other, and the water outlet 31 is connected to the flow guide structure 34, at this time the water in the inside of the second cylinder 33 will be discharged to the water outlet 31 through the flow guide structure 34 and flow out, thereby facilitating the flow of water out of the inside when the sleeve 12 is pulled up, at this time the water flows out from the position of the flow guide structure 34, and the staggered distribution of the flat plate 41 blocks most of the soil from flowing upwards, and the filter plate 43 blocks large particles and sand to a certain extent, and most of the water is discharged from the flow guide structure 34 to the water outlet 31, avoiding most of the water from being lifted and transferred with the soil when the soil is dug.

[0038] A use method of a water drilling bored pile construction device for engineering construction, based on the above-mentioned water drilling bored pile construction device for engineering construction, the specific use method comprises the following steps: S1: the driving cab on the excavation main body 5 controls the mechanical large arm 4 and the mechanical small arm 2 to drive the rotary excavation mechanism 1 at the lower end of the rotary device 3, and controls the rotary device 3 to rotate the rotary excavation mechanism 1, so that the rotary excavation mechanism 1 rotates and excavates downward, at this time, the turning plate 111 is inclined and rotates upward under the resistance of the underwater soil, and the fixed block 13 vertically slides in the track strip 16 through the outer slide plate 14 of the central rod 15, so that the soil and water enter above the opening and closing mechanism 11; S2: when the fixed block 13 moves upward, the slide plate 14 slides upward in the track strip 16, and the sleeve 12 is separated from the water, at this time, the opening and closing mechanism 11 is reset to a horizontal state under the gravity of the soil above to block the soil; S3: after the soil is excavated, the soil moves downward under the gravity, and the lower end of the sleeve 12 is placed on the ground, and the hollow slot of the central rod 15 is separated from the corresponding position of the force receiving rod 123 through the resistance of the ground, and then the outer side of the central rod 15 presses the force receiving rod 123, and the force receiving rod 123 is squeezed and pressed in the elastic state of the spring 121, and drives the conduction structure 122 to rotate; S4: the rotation of the conducting structure 122 makes the slide bar 24 slide in the adjacent rotating plate 111, and drives the rotating plate 111 to tilt upward, at this time, the rotating plate 111 presses the soil upward, and makes the rotating plate 111 and the conversion mechanism 112 dislocate, so that the soil falls out from the dislocation position.

[0039] It should be noted that the above content only illustrates the technical idea of the present application, and cannot be used to limit the protection scope of the present application. For ordinary skilled in the art, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements fall within the protection scope of the claims of the present application.

Claims

1. A construction device for underwater bored piles in engineering construction, characterized in that: It includes a rotary drilling mechanism, a mechanical arm, a rotator, a mechanical boom, and a digging body. The mechanical boom swings up and down inside the digging body, the mechanical arm swings hydraulically at the outer end of the mechanical boom, and the rotator rotates at the lower end of the mechanical arm. The digging body is equipped with a control room, which drives the mechanical arm, rotator, and mechanical boom through electrical signals, and causes the rotator to clamp the rotary drilling mechanism and rotate downwards. The rotary drilling mechanism includes an opening and closing mechanism, a sleeve, a fixed block, a sliding plate, a central rod, and a track. The central rod is fixed to the lower end of the fixed block, and the central rod is located at the central axis of the sleeve. The sliding plate, which is fixed to the outside of the central rod, slides on the track inside the sleeve. The opening and closing mechanism is fixed to the lower end of the central rod. When the fixed block rotates downwards, the underwater mud blocks the opening and closing mechanism and causes it to tilt upwards to open and close.

2. The underwater drilling and grouting pile construction device according to claim 1, characterized in that: The opening and closing mechanism includes a rotating plate, a conversion mechanism, and a sealing strip. There are four conversion mechanisms and four rotating plates, which are arranged in a circular array on the outside of the central rod. The rotating plate is hinged and rotates 60° on the outside of the central rod. The sealing strip is attached to the inside of the sleeve, and the outer side of the rotating plate is elastically pressed against the sealing strip. The side of the rotating plate is provided with a sliding groove corresponding to the side of the conversion mechanism.

3. The underwater drilling and grouting pile construction device according to claim 2, characterized in that: The conversion mechanism includes a spring, a transmission structure, a force-bearing rod, and a trapezoidal plate. The force-bearing rod slides along a 10° inclined track within the trapezoidal plate. One end of the spring is fixed to the outside of the force-bearing rod, and the other end is fixed to the inside of the trapezoidal plate. When the force-bearing rod slides along the track, it compresses the spring, and the elasticity of the spring causes the force-bearing rod to press against the transmission structure, causing the transmission structure to rotate counterclockwise within the trapezoidal plate. The trapezoidal plate is located inside the sleeve. The outer side of the central rod has a hollow groove corresponding to the outer end of the force-bearing rod. When the central rod moves downward, the force-bearing rod slides from the hollow groove to the outside of the central rod, compressing the spring and causing the force-bearing rod to elastically press against the lower end of the transmission structure. At this time, the transmission structure rotates counterclockwise, causing the transmission structure to lift the rotating plate and tilt.

4. The underwater drilling and grouting pile construction device according to claim 3, characterized in that: The conductive structure includes a rotating ring, a metal plate, a force-bearing plate, and a sliding rod. The force-bearing plate and the metal plate are at right angles. One end of the force-bearing rod presses down on the force-bearing plate, causing the metal plate and the force-bearing plate to rotate around the rotating ring within the trapezoidal plate. The sliding rod is located at the outer end of the metal plate and slides in a groove on the side of the adjacent rotating plate, causing the rotating plate to tilt when it rotates.

5. The underwater drilling and grouting pile construction device according to claim 4, characterized in that: The sleeve is provided with a water outlet, a first cylinder, a second cylinder, and a flow guiding structure. The water outlet is inclined at 50° inside the first cylinder, and the flow guiding structure corresponding to the water outlet is inclined inside the second cylinder. The second cylinder and the first cylinder slide vertically. When the first cylinder moves upward, the second cylinder slides downward under gravity, and the flow guiding structure connects with the water outlet.

6. The underwater drilling and grouting pile construction device according to claim 5, characterized in that, The flow guiding structure is provided with a flat plate, a flow hole and a filter plate. The flat plates are horizontally staggered in the flow hole. A filter plate is provided between the two lowest flat plates and blocks the water flowing upward from below.

7. A method of using a construction device for underwater bored piles in engineering construction, based on the construction device for underwater bored piles in engineering construction as described in claim 6, characterized in that: The specific usage method includes the following steps: S1: The mechanical boom and mechanical arm are controlled by the cab on the excavator to push the rotary digging mechanism at the lower end of the rotary unit, and the rotary unit is controlled to rotate the rotary digging mechanism, so that the rotary digging mechanism rotates downward. At this time, the opening and closing mechanism causes the rotating plate to tilt upward and rotate under the resistance of the underwater mud, and the fixed block slides vertically in the track through the outer slide plate of the central rod, so that mud and water enter the upper part of the opening and closing mechanism. S2: When the fixed block moves upward, the slide plate slides upward inside the track and drives the sleeve to leave the water. At this time, the opening and closing mechanism returns to the horizontal state under the gravity of the soil above and blocks the soil. S3: After the soil is excavated, the soil moves the opening and closing mechanism downward under gravity, while the lower end of the sleeve is placed on the ground. Through the obstruction of the ground, the hollow groove of the central rod is disengaged from the corresponding position of the force rod. Then, the outer side of the central rod presses against the force rod, and the force rod squeezes the transmission structure under the elasticity of the spring, and drives the transmission structure to rotate. S4: The rotation of the transmission structure causes the slide bar to slide within the adjacent rotating plate, and drives the rotating plate to tilt upward. At this time, the rotating plate squeezes the soil upward and causes the rotating plate and the conversion mechanism to misalign, so that the soil falls downward from the misaligned position.

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