CN113027333B - Drilling and piling integrated rotary drilling rig and construction method thereof - Google Patents

Abstract

The application relates to a drilling and piling integrated rotary drilling rig and a construction method thereof, relates to the field of engineering machinery and aims to solve the problem that the existing rotary drilling rig needs to replace accessories after drilling holes to pile piles, so that the construction efficiency is low; the drilling mechanism comprises a drill rod, a drilling tool and a power head, the drilling tool and the power head are respectively arranged at two ends of the drill rod, and the power head is used for driving the drill rod to rotate. This application has and installs drilling mechanism and pile mechanism on the mount to can realize the function of drilling and pile through a rotary drilling rig equipment, and need not to change the accessory, improve the effect of efficiency of construction.

Description

Drilling and piling integrated rotary drilling rig and construction method thereof

Technical Field

The application relates to the field of engineering machinery, in particular to a drilling and piling integrated rotary drilling rig and a construction method thereof.

Background

The rotary drilling rig is a construction machine suitable for hole-forming operation in building foundation engineering, is mainly suitable for soil layer construction of sandy soil, cohesive soil, silty soil and the like, and is widely applied to foundation construction of various foundations such as cast-in-place piles, continuous walls, foundation reinforcement and the like. The drilling machine is matched with different drilling tools, is suitable for pore-forming operation of dry (short spiral) or wet (rotary bucket) and rock strata (core drill), and can be matched with a long spiral drill, an underground continuous wall grab bucket, a vibrating pile hammer and the like to realize multiple functions.

The construction of the rotary drilling rig is used as a novel construction process, the construction machine is suitable for hole forming operation in building foundation engineering, the application is more and more extensive in the building industry, in actual construction, after the rotary drilling rig is drilled with holes, when piles are required to be driven into the holes, the parts on the rotary drilling rig need to be replaced, then construction is carried out, the construction efficiency is reduced, the parts need to be replaced through manpower, and a large amount of manpower is wasted.

Disclosure of Invention

In order to enable the rotary drilling rig to conveniently pile in a hole after hole opening, the application provides the drilling and piling integrated rotary drilling rig and the construction method thereof.

The drilling and piling integrated rotary drilling rig adopts the following technical scheme:

a drilling and piling integrated rotary drilling rig comprises a rotary drilling rig main body, a tilting bracket fixedly arranged on the rotary drilling rig main body and a mast assembly arranged on the tilting bracket, wherein the tilting bracket and the mast assembly are controlled by a hydraulic system;

the drilling mechanism comprises a drill rod, a drilling tool and a power head, the drilling tool and the power head are respectively arranged at two ends of the drill rod, the power head is used for driving the drill rod to rotate, the drilling tool and the drill rod are detachably connected, and the drill rod is movably connected along the length direction of the mounting rack;

pile driving mechanism is including getting a structure and pile driving subassembly, it includes rotor plate and two sets of anchor clamps that set up on the rotor plate to get a structure, the one end and the mounting bracket swing joint that the rotor plate is close to the drilling tool, pile driving subassembly fixed mounting in on the mounting bracket.

Through adopting the above technical scheme, dig the inclined support in the rig main part soon and can drive the motion of mast assembly, can be convenient for receive and release the mast assembly, the mast assembly includes the mounting bracket and sets up drilling mechanism and pile mechanism on the mounting bracket, drilling mechanism through the mounting bracket can punch to ground, and releasable connection between drilling tool and the drilling rod, can use different drilling tool trompils according to the needs of ground and construction position, pile and pile are got to pile mechanism on the rethread mounting bracket, need not to dig rig main part and change the accessory soon, the efficiency of construction is improved, and it is more convenient to use.

Optionally, the cross-section of the mounting bracket is a regular triangle, a cavity is formed in the mounting bracket, the drilling mechanism and the piling mechanism are respectively arranged on two side faces of the mounting bracket, and the inclined bracket is fixedly connected with the other side face of the mounting bracket.

Through adopting above-mentioned technical scheme, drilling mechanism and pile mechanism set up respectively on two sides of mounting bracket to can not cause the influence each other when making drilling mechanism and pile mechanism construct, and the cavity is seted up to the inside of mounting bracket, make the equipment of drive drilling mechanism and pile mechanism install in the inside of mounting bracket, save the exterior space of mounting bracket, avoid equipment to produce the influence to the motion of drilling mechanism and pile mechanism.

Optionally, one side that is close to drilling mechanism on the mounting bracket is provided with the leading truck, the length direction sliding connection of mounting bracket is followed to the leading truck, the leading truck with fixed connection between the unit head, the both ends of leading truck all are provided with the kink, the first spout that sets up along mounting bracket length direction is all seted up to the both sides of keeping away from drilling mechanism on the mounting bracket, the kink is at the inside sliding connection of first spout.

Through adopting above-mentioned technical scheme, through setting up leading truck and unit head fixed connection, it is fixed to guarantee the direction of motion of drilling, and the both sides of leading truck set up the kink, and the kink is at the inside sliding connection of first spout, because the structural constraint of mounting bracket and leading truck makes the leading truck can not follow the mounting bracket and drops, improves the motion stability of leading truck.

Optionally, a limiting frame is fixedly connected to one side, close to the drilling mechanism, of the mounting frame, a wear-resistant ring is fixedly connected to the limiting frame, a circular through hole matched with the drill rod is formed in the middle of the wear-resistant ring, and the drill rod penetrates through the wear-resistant ring at the circular through hole.

Through adopting above-mentioned technical scheme, the drilling rod passes the circular through-hole at wear-resisting circle middle part to can guarantee drilling rod and rotor plate parallel arrangement, improve the stability of drilling rod, avoid the drilling rod to take place to rock when the construction, to run from opposite directions the hole and cause the influence.

Optionally, a second chute which is vertically arranged is formed in one side, close to the piling mechanism, of the mounting frame, a sliding block is connected to the inside of the second chute in a sliding mode, the rotating plate is connected with the side wall of the sliding block in a rotating mode, a lifting piece is arranged inside the cavity, and the lifting piece is fixedly connected with the sliding block.

Through adopting above-mentioned technical scheme, the slider slides in the inside of second spout, can drive the slider through the lifting unit and remove to can make the rotor plate rotate and can press from both sides the clamp to it from the top of pile foundation when horizontal, be convenient for press from both sides the pile foundation that the clamp is different in diameter, and make anchor clamps more stable.

Optionally, the two sets of the fixtures are arranged on one side of the rotating plate, which is far away from the mounting frame, and the two sets of the fixtures are arranged on the same axis, the fixtures and the inclined support are controlled by a hydraulic system, and the inner wall of each fixture is provided with an anti-slip sheet.

Through adopting above-mentioned technical scheme, start anchor clamps through hydraulic system, and be provided with the antiskid ribbed tile on the inner wall of anchor clamps to can be to the fixed fastening more of pile foundation, avoid pressing from both sides to get and cause the pile foundation to drop after the pile foundation and take place danger.

Optionally, a pay-off structure is arranged inside the cavity, the pay-off structure includes a driving part and a steel wire rope arranged on the driving part, the driving part is fixedly connected to the inner wall of the cavity, and one end, far away from the driving part, of the steel wire rope is fixedly connected to the rotating plate.

Through adopting above-mentioned technical scheme, can drive the wire rope extension through the driving piece, and then make the rotor plate rotate to the level, be convenient for press from both sides through anchor clamps on the rotor plate and get the pile foundation, perhaps the driving piece makes wire rope shorten, and the pulling rotor plate rotates to suitable position, is convenient for install the pile foundation.

Optionally, the sliding block is fixedly connected with a fixed pulley, and the steel wire rope is wound outside the fixed pulley.

Through adopting above-mentioned technical scheme, through setting up the fixed pulley, fixed pulley fixed connection is on the slider to the fixed pulley can be along with slider synchronous motion, and wire rope winds in the outside of fixed pulley, thereby can guarantee that the fixed pulley is to the angle fixation of the wire rope between the rotor plate, can stably lift the rotor plate.

Optionally, the piling assembly comprises a hydraulic cylinder and a piling hammer, the hydraulic cylinder is fixedly mounted on the mounting frame, and the piling hammer is detachably and fixedly connected to a piston rod of the hydraulic cylinder.

Through adopting above-mentioned technical scheme, promote the pile hammer motion through the pneumatic cylinder to make the top of pile hammer striking pile foundation, thereby in driving the hole with the pile foundation, and the piston rod releasable connection of pile hammer and pneumatic cylinder, be convenient for dismantle the pile hammer, change and maintain the pile hammer.

In a second aspect, the application provides a construction method of a drilling and piling integrated rotary drilling rig, which adopts the following technical scheme:

a construction method of a drilling and piling integrated rotary drilling rig comprises the following steps:

s1, embedding a protection cylinder, placing a main body of the rotary drilling rig in place, and driving a mounting frame to rotate by the main body of the rotary drilling rig so as to enable the mounting frame to rotate to the vertical direction;

s2, starting the power head after the drilling tool lightly lands, driving the drilling tool to rotate by the power head to drill, lifting the drilling tool out of the hole when the drilling tool is filled with sand, and discharging the sand in the drilling tool;

s3, drilling, cleaning holes and measuring depth;

s4, paying off through a paying-off structure to enable the rotating plate to rotate to the horizontal direction, fixing the pile foundation through a clamp on the rotating plate, and taking up through the paying-off structure to enable the rotating plate and the pile foundation to rotate to the vertical direction;

s5, placing the pile foundation in the hole, and starting a hydraulic cylinder to drive a pile hammer to move to pile;

and S6, pulling out the pile casing, cleaning the pile head, and filling the gap between the pile foundation and the hole.

In summary, the present application includes at least the following advantageous technical effects:

1. the mast assembly can be driven to move by the rotary drilling rig main body, the angle of the mast assembly is adjusted by the inclined bracket, the mast assembly is convenient to retract and release, the mast assembly comprises a mounting frame and a drilling mechanism and a piling mechanism which are arranged on the mounting frame, holes can be drilled on the ground by the drilling mechanism on the mounting frame, and then piles are taken and piled by the piling mechanism on the mounting frame, so that parts of the rotary drilling rig main body do not need to be replaced, the construction efficiency is improved, and the rotary drilling rig is more convenient to use;

2. the guide frame is arranged, the two ends of the guide frame are provided with the bent parts, the bent parts slide in the first sliding groove in the mounting frame, the guide frame cannot fall off from the mounting frame due to structural limitation of the mounting frame and the guide frame, the guide frame is fixedly connected with the power head, the drill rod penetrates through the circular through hole in the middle of the wear-resisting ring, the drill rod can move in the direction parallel to the mounting frame, the movement is more stable, and the drill rod is prevented from shaking during construction and affecting the opening;

3. through the inside at the second spout sets up the slider, the rotor plate rotates with the lateral wall of slider to be connected, the lift piece can drive the slider motion, thereby can make the rotor plate rotate when to the level, anchor clamps are got to it clamp from the top of pile foundation, be convenient for press from both sides the pile foundation that gets the diameter difference, and make anchor clamps more stable, drive the rotor plate by unwrapping wire structure again and rotate, be convenient for lift the pile foundation and place in the hole, thereby drive the pile hammer motion through the pneumatic cylinder and beat the pile foundation into the hole, the efficiency of construction is improved.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a schematic front view of the structure of the embodiment of the present application.

Fig. 3 is a schematic rear view cross-sectional structure of an embodiment of the present application.

Reference numerals: 1. a main body of the rotary drilling rig; 2. a tilting bracket; 3. a mast assembly; 31. a mounting frame; 32. a drilling mechanism; 321. drilling a rod; 322. drilling tools; 323. a power head; 33. a pile driving mechanism; 331. taking a pile structure; 3311. a rotating plate; 3312. a clamp; 332. a pile driving assembly; 3321. a hydraulic cylinder; 3322. a pile hammer; 4. a cavity; 5. a guide frame; 6. a bent portion; 7. a first chute; 8. a limiting frame; 9. wear-resistant rings; 10. a second chute; 11. a slider; 12. a lifting member; 13. anti-slip sheets; 14. a paying-off structure; 141. a drive member; 142. a wire rope; 15. and a fixed pulley.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses drilling and piling integrated rotary drilling rig.

Referring to fig. 1, the drilling and piling integrated rotary drilling rig comprises a rotary drilling rig main body 1, a tilting bracket 2 is fixedly mounted at one end, close to a control room, of the rotary drilling rig main body 1 through a bolt, a mast assembly 3 is fixedly mounted on the tilting bracket 2 through a bolt, the tilting bracket 2 is controlled by a hydraulic system with the mast assembly 3, the mast assembly 3 comprises a mounting bracket 31, the mounting bracket 31 can be rotated to a transverse state and a vertical state through the tilting bracket 2, so that the rotary drilling rig main body 1 can drive the mounting bracket 31 to move, the cross section of the mounting bracket 31 is a regular triangle, the tilting bracket 2 is fixedly connected with one outer wall of the mounting bracket 31 through a bolt, a drilling mechanism 32 and a piling mechanism 33 are respectively arranged on the other two side surfaces of the mounting bracket 31, the drilling mechanism 32 and the piling mechanism 33 cannot affect each other during construction, a cavity 4 is formed in the mounting bracket 31, equipment for driving the drilling mechanism 32 and the piling mechanism 33 is mounted in the mounting bracket 31, the mounting bracket 31 is saved in an external space, the mounting bracket 31, the device is prevented from affecting the movement of the drilling mechanism 32 and the piling mechanism 33, for improving the accuracy of the rotating hole position of the drilling mechanism 32, a laser emitting device is arranged at the bottom of the mounting bracket 31, a laser emitting device, the mounting bracket is arranged on a rotating ball, and the infrared emitting device, the infrared emitting device which is connected with a rotating ball fixed ball, and the infrared emitting device which is arranged on the infrared emitting device, and the infrared emitting device is connected on the mounting bracket, and the infrared emitting device is connected with the infrared emitting device which is arranged on the infrared emitting device, and the infrared emitting device.

Referring to fig. 1, drilling mechanism 32 includes drilling rod 321, drilling tool 322 and power head 323, power head 323 welds in the one end of drilling rod 321, it rotates to drive drilling rod 321 through power head 323, drilling tool 322 sets up in the other end of drilling rod 321, be releasable connection between drilling tool 322 and the drilling rod 321, can be according to the needs of construction and the difference of soil property, thereby be convenient for change different drilling tools 322, drill hole to ground, one side swing joint who is close to drilling mechanism 32 on the mounting bracket 31 has leading truck 5, leading truck 5 is along the length direction sliding connection of mounting bracket 31, on power head 323 passes through bolt fixed mounting and leading truck 5, thereby make power head 323, drilling tool 321, the length direction motion of drilling tool 322 along mounting bracket 31, kink 6 has all been welded at the both ends of leading truck 5, the contained angle between leading truck 5 and the kink 6 is 60 degrees, the first spout 7 that sets up along mounting bracket 31 length direction is all seted up to the both sides of keeping away from drilling mechanism 32 on mounting bracket 31, kink 6 is at the inside sliding connection of first spout 7, leading truck 5 can stabilize along mounting bracket 31 surface motion.

Referring to fig. 1, for guaranteeing the stability of drilling rod 321 motion, one side welding that is close to drilling mechanism 32 on mounting bracket 31 has spacing 8, the welding has wear-resisting circle 9 on spacing 8, the circular through-hole with drilling rod 321 looks adaptation is seted up at the middle part of wear-resisting circle 9, drilling rod 321 runs through wear-resisting circle 9 in circular through-hole department, thereby guarantee that drilling rod 321 moves along the direction that is on a parallel with mounting bracket 31 when moving, improve the stability of drilling rod 321, avoid drilling rod 321 to take place to rock when the construction, drilling rod 321 rocks and causes the influence to the trompil.

Referring to fig. 2, the pile driving mechanism 33 includes a pile taking structure 331, the pile taking structure 331 includes a rotating plate 3311 and two sets of clamps 3312 disposed on the rotating plate 3311, the clamps 3312 are disposed on the same axis, the two sets of clamps 3312 are all controlled by a hydraulic system with the inclined bracket 2, the pile foundation can be clamped by the clamps 3312, and an anti-slip sheet 13 is bonded on the inner wall of the clamps 3312, so as to improve the friction between the clamps 3312 and the pile foundation, so that the pile foundation is fixed more stably, one end of the rotating plate 3311 close to the drill 322 is movably connected to the mounting block 31, a second sliding groove 10 disposed along the length direction of the mounting block 31 is disposed on one side of the mounting block 31, the inside of the second sliding groove 10 is slidably connected to a pile driving slider 11, the rotating rod is hinged to the side of the slider 11, a lifting piece 12 is disposed at the bottom of the cavity 4, the lifting piece 12 is an air cylinder in this embodiment, the air cylinder is fixedly disposed in the cavity 4 by a bolt, the slider 11 is welded to the piston rod of the air cylinder, the slider 11 can push the slider 11 to move, so that the slider 11 slides inside the second sliding rod 10, when the pile foundation is larger in diameter, the pile taking structure 3311, the pile is convenient for taking height of the pile foundation, and the pile.

Referring to fig. 2 and 3, in order to facilitate controlling the rotation of the rotating plate 3311, a wire releasing structure 14 is disposed inside the cavity 4, the wire releasing structure 14 includes a driving part 141 and a wire rope 142 disposed on the driving part 141, in this embodiment, the driving part 141 is a motor, the motor is mounted on the inner wall of the cavity 4 through a bolt, a fixing sleeve is welded on an output shaft of the motor, the wire rope 142 is wound outside the fixing sleeve, one end of the wire rope 142, which is far away from the driving part 141, is fixedly connected to the rotating plate 3311, a connecting ring is welded on the rotating plate 3311, the wire rope 142 is inserted into the connecting ring and fixedly connected to the connecting ring, the rotating plate 3311 is rotated by driving the wire rope 142 through the motor, in order to ensure that the angle of the wire rope 142 between the fixed pulley 15 and the rotating plate 3311 is fixed, the rotating plate 3311 can be stably lifted, the fixed pulley 15 is mounted on the slider 11 through a bolt, so that the fixed pulley 15 moves synchronously with the slider 11, and the wire rope 142 is wound outside the fixed pulley 15.

Referring to fig. 2, the pile driving mechanism 33 further includes a pile driving assembly 332, the pile driving assembly 332 includes a hydraulic cylinder 3321 and a pile hammer 3322, the mounting bracket 31 is welded with a mounting plate, the hydraulic cylinder 3321 is fixedly mounted at the bottom of the mounting plate through a bolt, the hydraulic cylinder 3321 is vertically arranged, the pile hammer 3322 is detachably and fixedly connected to a piston rod of the hydraulic cylinder 3321, the hydraulic cylinder 3321 pushes the pile hammer 3322 to move, so that the pile hammer 3322 impacts the top of the pile foundation, so that the pile foundation is driven into the hole, and the pile hammer 3322 is detachably connected to the piston rod of the hydraulic cylinder 3321, so that the pile hammer 3322 is conveniently detached, and the pile hammer 3322 is replaced and maintained.

The embodiment of the application also discloses a construction method of the drilling and piling integrated rotary drilling rig, which comprises the following steps:

s1, embedding a pile casing, preferably checking pile position deviation by using a stay wire method, taking the rotary drilling rig main body 1 in place to enable the rotary drilling rig main body 1 to stop at a proper position when meeting the construction specification requirement, simultaneously opening a support frame to fix the rotary drilling rig main body 1, driving the mounting frame 31 to rotate by the rotary drilling rig main body 1 to enable the mounting frame to rotate to the vertical direction, and enabling the drilling tool 322 to be located at a position needing hole drilling;

s2, starting the power head 323 after the drilling tool 322 lightly lands, enabling the power head 323 to drive the drilling tool 322 to rotate to drill, selecting different rotating speeds and different feed rates to control according to different levels of soil structures, and lifting the drilling tool 322 out of a hole when the drilling tool 322 is filled with sand, and discharging the sand in the drilling tool 322;

s3, drilling, cleaning holes and measuring depth;

s4, starting the cylinder, lifting the sliding block 11 to a proper height according to the diameter of the pile foundation, paying off through the paying-off structure 14 to enable the rotating plate 3311 to rotate to the horizontal direction, controlling the clamp 3312 on the rotating plate 3311 to clamp and fix the pile foundation, and taking up through the paying-off structure 14 to enable the rotating plate 3311 and the pile foundation to rotate to the vertical direction;

s5, adjusting the position of the mounting frame 31, placing the pile foundation in the prefabricated hole, starting a hydraulic cylinder 3321 to drive a pile driving hammer 3322 to move in the vertical direction, and striking the top end of the pile foundation by the pile driving hammer 3322 to drive the pile;

and S6, enabling the pile foundation to enter the hole, pulling out the pile casing, cleaning the pile head, filling the gap between the pile foundation and the hole, and fixing the pile foundation.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (3)

1. The utility model provides a rig is dug soon to drilling pile integral type, includes that dig rig main part (1), fixed mounting soon incline support (2) and set up mast assembly (3) on incline support (2) on digging rig main part (1) soon, through hydraulic system control, its characterized in that between incline support (2) and mast assembly (3): the mast assembly (3) comprises a mounting frame (31), and a drilling mechanism (32) and a piling mechanism (33) which are arranged on the mounting frame (31), wherein the mounting frame (31) is fixedly connected to the inclined bracket (2);

the drilling mechanism (32) comprises a drill rod (321), a drilling tool (322) and a power head (323), the drilling tool (322) and the power head (323) are respectively arranged at two ends of the drill rod (321), the power head (323) is used for driving the drill rod (321) to rotate, the drilling tool (322) is detachably connected with the drill rod (321), and the drill rod (321) is movably connected along the length direction of the mounting frame (31);

the pile driving mechanism (33) comprises a pile taking structure (331) and a pile driving component (332), the pile taking structure (331) comprises a rotating plate (3311) and two groups of clamps (3312) arranged on the rotating plate (3311), one end, close to the drilling tool (322), of the rotating plate (3311) is movably connected with the mounting frame (31), and the pile driving component (332) is fixedly mounted on the mounting frame (31);

the cross section of the mounting frame (31) is in a regular triangle shape, a cavity (4) is formed in the mounting frame (31), the drilling mechanism (32) and the piling mechanism (33) are respectively arranged on two side faces of the mounting frame (31), and the inclined support (2) is fixedly connected with the other side face of the mounting frame (31);

a guide frame (5) is arranged on one side, close to the drilling mechanism (32), of the mounting frame (31), the guide frame (5) is connected in a sliding mode along the length direction of the mounting frame (31), the guide frame (5) is fixedly connected with the power head (323), bent portions (6) are arranged at two ends of the guide frame (5), first sliding grooves (7) arranged along the length direction of the mounting frame (31) are formed in two sides, far away from the drilling mechanism (32), of the mounting frame (31), and the bent portions (6) are connected in the first sliding grooves (7) in a sliding mode;

a second chute (10) which is vertically arranged is formed in one side, close to the piling mechanism (33), of the mounting frame (31), a sliding block (11) is connected to the inside of the second chute (10) in a sliding mode, the rotating plate (3311) is rotatably connected with the side wall of the sliding block (11), a lifting piece (12) is arranged inside the cavity (4), and the lifting piece (12) is fixedly connected with the sliding block (11);

the two groups of clamps (3312) are arranged on one side of the rotating plate (3311) far away from the mounting frame (31), the two groups of clamps (3312) are arranged on the same axis, the clamps (3312) and the inclined bracket (2) are controlled by a hydraulic system, and anti-skidding sheets (13) are arranged on the inner wall of each clamp (3312);

a pay-off structure (14) is arranged in the cavity (4), the pay-off structure (14) comprises a driving part (141) and a steel wire rope (142) arranged on the driving part (141), the driving part (141) is fixedly connected to the inner wall of the cavity (4), and one end, far away from the driving part (141), of the steel wire rope (142) is fixedly connected to the rotating plate (3311);

the sliding block (11) is fixedly connected with a fixed pulley (15), and the steel wire rope (142) is wound outside the fixed pulley (15);

the piling assembly (332) comprises a hydraulic cylinder (3321) and a piling hammer (3322), the hydraulic cylinder (3321) is fixedly installed on the installation frame (31), and the piling hammer (3322) is detachably and fixedly connected to a piston rod of the hydraulic cylinder (3321).

2. The drilling and piling integrated rotary drilling rig according to claim 1, characterized in that: one side fixedly connected with spacing (8) that is close to drilling mechanism (32) on mounting bracket (31), fixedly connected with wear-resisting circle (9) on spacing (8), the middle part of wear-resisting circle (9) seted up with the circular through-hole of drilling rod (321) looks adaptation, drilling rod (321) run through in circular through-hole department wear-resisting circle (9).

3. The construction method of the drilling and piling integrated rotary drilling rig according to any one of claims 1-2, characterized by comprising the following steps: the method comprises the following steps:

s1, embedding a protective cylinder, placing a main body (1) of the rotary drilling rig in place, and driving a mounting frame (31) to rotate by the main body (1) of the rotary drilling rig to enable the mounting frame to rotate to the vertical direction;

s2, starting the power head (323) after the drilling tool (322) lightly lands, driving the drilling tool (322) to rotate by the power head (323) to drill, lifting the drilling tool (322) out of a hole when the drilling tool (322) is filled with sand, and discharging the sand in the drilling tool (322);

s3, drilling, cleaning holes and measuring depth;

s4, paying off through the paying-off structure (14) to enable the rotating plate (3311) to rotate to the horizontal direction, fixing the pile foundation through a clamp (3312) on the rotating plate (3311), and taking up through the paying-off structure (14) to enable the rotating plate (3311) and the pile foundation to rotate to the vertical direction;

s5, placing the pile foundation in the hole, and starting a hydraulic cylinder (3321) to drive a pile driving hammer (3322) to move so as to drive a pile;

and S6, pulling out the pile casing, cleaning the pile head, and filling the gap between the pile foundation and the hole.

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