CN212201919U

CN212201919U - Construction method pile construction equipment

Info

Publication number: CN212201919U
Application number: CN202020798661.4U
Authority: CN
Inventors: 谷孝建; 陈绪德; 曹成; 王慧
Original assignee: Wuhan Nanfang Xuyu Technology Engineering Co ltd
Current assignee: Wuhan Nanfang Xuyu Technology Engineering Co ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2020-12-22
Anticipated expiration: 2030-05-14

Abstract

The utility model provides a worker's method stake construction equipment, include: the pile driver is vertically and fixedly provided with a pile frame; the drilling tool comprises a drilling frame, a drilling barrel, a hollow drill rod and a power driving device, wherein external threads are arranged on the outer side wall of the drilling barrel, a plurality of filling holes are formed in the side wall of the bottom of the drilling barrel, the hollow drill rod is inserted into the drilling barrel, the bottom end of the hollow drill rod is connected with a drill bit, a plurality of guniting holes are formed in the drill bit, the top end of the hollow drill rod is connected with a grouting pipe, and the power driving device is used for driving the drilling barrel and the hollow drill rod to rotate; and the linear motion mechanism is arranged at the upper end of the pile frame and used for driving the drilling tool to move up and down along the drill frame. The utility model discloses worker method stake construction equipment can closely knit soil body structure, consolidates the all soil body of stake, improves stake week soil side frictional resistance, and the stake all soil body solidifies the back with the mixture of grout and closely inlays solid the bonding with screw thread pile body concrete, forms the combination pile body, makes the resistance to compression, the resistance to plucking bearing capacity of single pile all improve greatly.

Description

Construction method pile construction equipment

Technical Field

The utility model relates to a pile foundation engineering technical field especially relates to an worker's method stake construction equipment.

Background

The high-pressure jet grouting pile and the squeezing reaming pile are two traditional foundation construction processes, the high-pressure jet grouting pile is forcibly stirred by high-pressure cement slurry and a reinforced soil body, the soil body structure is firstly damaged, the cement slurry fills structural pores in the soil body, and the strength of a mixture of the soil body and the cement slurry is enhanced along with the solidification of the cement slurry, so that the process is widely applied, but the improvement of the strength of the reinforced soil body is limited, and particularly, the problems of poor pile forming quality and uneven pile diameter exist in a muddy clay layer; the traditional extrusion reaming pile uses a special drilling tool to forcibly drill or tamp soil to extrude and form a hole, a pile body cavity is extruded in a soil body, then concrete is poured or materials such as broken stone, brick slag and the like are filled in the soil body to form the pile, soil is not taken in the process of forming the hole, the process is environment-friendly and economical, but the construction speed is low, the pile forming quality is poor, the pile forming diameter is generally small, and the bearing capacity of a single pile is not high.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an engineering method stake construction equipment for it is limited to solve among the prior art high pressure jet grouting pile reinforcement soil body intensity improvement, and crowded reaming hole stake construction speed is slow, and it is not good to become the stake quality, and it is less to become the stake diameter, the not high problem of single pile bearing capacity.

In order to solve the technical problem, the utility model provides a technical scheme is:

an apparatus for constructing a pile according to a construction method, comprising:

the pile driver is vertically and fixedly provided with a pile frame;

the drilling tool is arranged on the pile frame in a sliding mode and comprises a drilling frame, a drilling barrel with an opening at the top, a hollow drill rod and a power driving device are arranged on the drilling frame, external threads are arranged on the outer side wall of the drilling barrel, a plurality of filling holes are formed in the side wall of the bottom of the drilling barrel, the hollow drill rod is inserted into the drilling barrel, the bottom end of the hollow drill rod extends out of the drilling barrel and is connected with a drill bit, a plurality of guniting holes are formed in the drill bit, the top end of the hollow drill rod is used for being connected with a grouting pipe, and the power driving device is used for driving the drilling barrel and the hollow;

and the linear motion mechanism is arranged at the upper end of the pile frame and used for driving the drilling tool to move up and down along the drill frame.

On the basis of the technical scheme, preferably, a first slide rail is fixedly mounted on the side wall of the lower section of the pile frame, and a first slide block connected with the first slide rail is fixedly mounted on the drill frame.

On the basis of the technical scheme, it is preferred, linear motion mechanism includes second slide rail, second slider, lifter, toothed disc and servo motor, wherein, second slide rail fixed mounting is on pile frame upper segment lateral wall, and second slider sliding connection is on the second slide rail, the one end and the second slider fixed connection of lifter, the other end and drill frame fixed connection are provided with the spur rack on the lateral wall of second slider, servo motor fixed mounting is on the pile frame, servo motor's output shaft and toothed disc's center pin fixed connection, toothed disc and spur rack meshing are connected.

On the basis of the above technical scheme, preferably, the linear motion mechanism is a telescopic hydraulic cylinder, and a piston rod in the telescopic hydraulic cylinder is fixedly connected with the drill frame.

On the basis of the technical scheme, preferably, the drill stand is further provided with a limit ring for sleeving the drill barrel, limit flanges are respectively arranged on the peripheral walls of the drill barrel where the upper end surface and the lower end surface of the limit ring are located, first teeth are arranged on the peripheral wall of the upper end of the drill barrel, second teeth are arranged on the peripheral wall of the upper end of the hollow drill rod, the power driving device comprises a driving motor, a main gear, a rotating seat, a transmission shaft, a first transmission gear and a second transmission gear, wherein one side of the driving motor is fixedly connected with the drill stand, an output shaft of the driving motor is fixedly connected with the main gear, the other side of the driving motor is fixedly connected with the rotating seat, the transmission shaft is rotatably arranged in the rotating seat, the upper end of the transmission shaft is fixedly connected with the second transmission gear, the lower end of the transmission shaft is fixedly connected with the first transmission gear, and the first transmission gear is respectively meshed with the main gear and the first, the second transmission gear is meshed with the second tooth.

On the basis of the technical scheme, preferably, bore a section of thick bamboo and include the cylindricality section and set up the toper section in cylindricality section bottom, the external screw thread includes first external screw thread and second external screw thread, first external screw thread sets up on the cylindricality section periphery wall at spacing ring below place, first tooth sets up on the cylindricality section periphery wall at spacing ring top place, the second external screw thread sets up on toper section surface, just a plurality of filling holes evenly distributed are on toper section surface.

Further, preferably, a loose-leaf cover plate is arranged on the filling hole, and the lower end of the loose-leaf cover plate is hinged with the side wall of the conical section.

Further, it is preferred, hollow drill rod includes last drilling rod, lower drilling rod and the retaining member including pegging graft each other, the second tooth sets up on last drilling rod upper end periphery wall, be provided with the third external screw thread on the periphery wall of the last drilling rod at second tooth below place, be provided with the fourth external screw thread on the periphery wall of drilling rod down, the retaining member cup joints at last drilling rod and between the drilling rod down, just be provided with the internal thread that is connected with third external screw thread and fourth external screw thread in the retaining member.

Further, preferably, the drill jig is provided with a mounting hole for inserting the upper drill rod, a pipe joint for connecting a grouting pipe is mounted in the mounting hole, and the drill jig is further provided with a fixing frame for fixing a pump pipe.

The utility model discloses a have following beneficial effect for prior art:

the utility model discloses an worker's method stake construction equipment, bore the in-process under the drill bit, at first rotatory blowout high pressure grout, destroy the all soil body structure of stake, give the drilling tool through linear motion mechanism immediately and push down power, and carry out crowded soil reaming through boring a section of thick bamboo rotation, form the pile body cavity, this is a run-through process, bore the design degree of depth or satisfy the design condition back reverse rotation under and propose the bore section of thick bamboo in the drilling tool, utilize concrete pump to the downthehole pump income concrete of stake simultaneously, transfer the steel reinforcement cage at last, the vibration proposes hollow drill rod, closely knit pile body concrete. The pile construction equipment in the method superposes the effects of the high-pressure jet grouting pile and the traditional extrusion reaming pile, and the external thread is arranged on the outer wall of the drilling barrel, so that the external thread is convenient for extrusion reaming by the drill barrel in the rotating process, simultaneously, the thread can be formed on the inner wall of the pile hole, the completion can be simultaneously carried out by one step, the high-pressure cement slurry firstly destroys the soil body structure, is beneficial to the soil squeezing and drilling of a drilling tool, is also beneficial to the extrusion of a high-quality large-diameter pile body cavity, greatly improves the construction speed, and can also realize a larger-diameter pile body, simultaneously, the crowded bloated effect of grout and drilling tool can both closely knit the soil body structure, consolidates the soil body of stake week, improves stake week soil side frictional resistance, and the compound body of the soil body of stake week and grout solidifies back and closely inlays solid the bonding with screw thread pile body concrete, forms the combination pile body, has the effect of increase pile body diameter, makes the resistance to compression of single pile, resistance to plucking bearing capacity all improve greatly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a construction apparatus for piles according to the present invention;

fig. 2 is a schematic perspective view of a drilling tool disclosed in the present invention;

fig. 3 is a schematic perspective view of the linear motion mechanism disclosed in the present invention;

fig. 4 is a schematic perspective view of the power driving device disclosed in the present invention;

fig. 5 is a schematic perspective view of a drill barrel according to the present invention;

fig. 6 is an assembly view of the hollow drill rod disclosed in the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

As shown in fig. 1, with reference to fig. 2, the utility model discloses an engineering method stake construction equipment, include:

a pile frame 11 is vertically and fixedly arranged on the pile machine 1 of the pile machine 1;

the drilling tool 2 is arranged on the pile frame 11 in a sliding mode, the drilling tool 2 comprises a drilling frame 21, a drilling barrel 22 with an opening at the top, a hollow drill rod 23 and a power driving device 24 are arranged on the drilling frame 21, external threads 221 are arranged on the outer side wall of the drilling barrel 22, a plurality of filling holes 222 are formed in the side wall of the bottom of the drilling barrel 22, the hollow drill rod 23 is inserted into the drilling barrel 22, the bottom end of the hollow drill rod 23 extends out of the drilling barrel 22 and is connected with a drill bit 231, a plurality of guniting holes 232 are formed in the drill bit 231, the top end of the hollow drill rod 23 is connected with a grouting pipe, and the power driving device 24 is used for driving the;

and the linear motion mechanism 3 is arranged at the upper end of the pile frame 11 and is used for driving the drilling tool 2 to move up and down along the drill frame 21.

By adopting the technical scheme, the drilling tool 2 can move up and down along the pile frame 11 under the driving of the linear motion mechanism 3, so that the drilling tool 2 obtains certain downward pressure and upward tension. The power driving device 24 can drive the drill cylinder 22 and the hollow drill rod 23 to synchronously rotate, when the pile position construction is carried out, the drill cylinder 22 and the hollow drill rod 23 rotate, the drill 2 is pressed down by the linear motion mechanism 3, the drill bit 231 at the bottom of the hollow drill rod 23 firstly extends into the soil body, the top end of the hollow drill rod 23 is connected with a grouting pipe and is injected with high-pressure cement slurry, when the drill bit 231 rotates, the high-pressure cement slurry is sprayed out through the slurry spraying hole 232 on the drill bit 231 to destroy the soil body structure around the pile, then the linear motion mechanism 3 continuously gives downward pressing power to the drill 2, the drill cylinder 22 rotates to extrude and expand the soil to form a pile cavity, the pile cavity is a continuous process, the drill cylinder 22 in the drill cylinder 2 is reversely rotated and lifted out after the drill cylinder reaches the designed depth or meets the designed conditions, and simultaneously, the concrete is pumped into the opening at the top of the, the concrete flows back into the pile hole uniformly through the pouring hole 222 on the side wall of the bottom of the drill cylinder 22, and the compactness of the concrete is improved. And finally, lowering a reinforcement cage, vibrating and extracting the hollow drill rod 23, and compacting the concrete of the pile body. The pile construction equipment in the method superposes the effects of the high-pressure jet grouting pile and the traditional extrusion reaming pile, and the external thread 221 is arranged on the outer wall of the drill cylinder 22, so that the external thread 221 is conveniently used for extrusion reaming during the rotation process of the drill cylinder 22, meanwhile, the thread can be formed on the inner wall of the pile hole, the completion can be simultaneously completed in one step, the high-pressure cement slurry firstly destroys the soil body structure, is beneficial to the soil squeezing and drilling of the drilling tool 2, is also beneficial to the extrusion of the cavity of the high-quality large-diameter pile body, greatly improves the construction speed, and can realize the larger-diameter pile body, simultaneously, the crowded bloated effect of grout and drilling tool 2 can both closely knit the soil body structure, consolidates the soil body of stake week, improves stake week soil side frictional resistance, and the mixture of the soil body of stake week and grout solidifies the back and closely inlays solid the bonding with screw thread pile body concrete, forms the combination pile body, has the effect of increase pile body diameter, makes the resistance to compression of single pile, resistance to plucking bearing capacity all improve greatly.

The utility model discloses still further realize through following technical scheme.

Preferably, a first slide rail 12 is fixedly installed on a side wall of a lower section of the pile frame 11, and a first slide block 13 connected with the first slide rail 12 is fixedly installed on the drill frame 21. With this arrangement, the drill frame 21 can slide up and down on the first slide rail 12 via the first slide block 13, so that the drill 2 can slide up and down on the pile frame 11.

Referring to fig. 3, in this embodiment, the linear motion mechanism 3 includes a second slide rail 31, a second slide block 32, a lifting rod 33, a gear plate 34 and a servo motor 35, wherein the second slide rail 31 is fixedly mounted on a side wall of an upper section of the pile frame 11, the second slide block 32 is slidably connected to the second slide rail 31, one end of the lifting rod 33 is fixedly connected to the second slide block 32, the other end of the lifting rod is fixedly connected to the drill frame 21, the servo motor 35 is fixedly mounted on the pile frame 11 and provided with a spur rack 321 on a side wall of the second slide block 32, an output shaft of the servo motor 35 is fixedly connected to a central shaft of the gear plate 34, and the gear plate 34 is engaged with the spur rack.

By adopting the technical scheme, the gear disc 34 is driven to rotate by the servo motor 35, and the gear disc 34 is in meshed transmission with the spur rack 321 in the rotating process, so that the second sliding block 32 moves up and down on the second sliding rail 31, and the drilling tool 2 is driven to move up and down along the pile frame 11 by the lifting rod 33.

The embodiment of the utility model provides an in, can make control speed because of servo motor 35, position accuracy is very accurate, can turn into torque and rotational speed with the drive control object with voltage signal. The rotor speed of the servo motor 35 is controlled by an input signal, can quickly respond, is used as an execution element in an automatic control system, and has the advantages of small electromechanical time constant and high linearity.

It is worth noting that the outer side wall of the drill cylinder is provided with the external thread, when the drill cylinder is screwed out of the pile hole in the opposite direction, in order to ensure that the thread of the inner wall of the pile hole is intact, the rotating speed of the servo motor is consistent with the rotating speed of the driving motor, which is described below, the rotating speed of the drill cylinder is ensured to be consistent with the speed of the servo motor driving the gear rack to drive the drill frame to move upwards, and therefore the external thread of the outer wall of the drill cylinder can be smoothly separated from the pile hole without the risk of damaging the thread of the inner wall of the pile hole.

As some alternative embodiments, the linear motion mechanism 3 is a telescopic hydraulic cylinder, and a piston rod of the telescopic hydraulic cylinder is fixedly connected with the drill frame 21. The sequence of piston extension in the telescopic cylinder is from large to small, while the sequence of idle retraction is generally from small to large. The telescopic cylinder can realize longer stroke, and has shorter length and more compact structure when retracting. The hydraulic cylinder is commonly used on engineering machinery, and comprises a plurality of pistons which move once, and the output speed and the output force of each piston are changed when the pistons move gradually. The force loading can thus be met while giving the drilling tool 2 a sufficient lifting stroke.

Referring to fig. 4 and 5, in this embodiment, the drill frame 21 is further provided with a limit ring 211 for sleeving the drill cylinder 22, the outer peripheral walls of the drill cylinder 22 where the upper end surface and the lower end surface of the limit ring 211 are located are respectively provided with a limit flange 223, the drill cylinder 22 can be sleeved in the limit ring 211 through the limit ring 211, so that the drill cylinder 22 cannot move horizontally, and the drill cylinder 22 cannot move up and down along the limit ring 211 through the limit flange 223, so that the relative position of the drill cylinder 22 and the drill frame 21 is further kept unchanged. The outer peripheral wall of the upper end of the drill cylinder 22 is provided with a first tooth 224, the outer peripheral wall of the upper end of the hollow drill rod 23 is provided with a second tooth 233, the power driving device 24 comprises a driving motor 241, a main gear 242, a rotating seat 243, a transmission shaft 244, a first transmission gear 245 and a second transmission gear 246, wherein one side of the driving motor 241 is fixedly connected with the drill frame 21, an output shaft of the driving motor 241 is fixedly connected with the main gear 242, the other side of the driving motor 241 is fixedly connected with the rotating seat 243, the transmission shaft 244 is rotatably arranged in the rotating seat 243, the upper end of the transmission shaft 244 is fixedly connected with the second transmission gear 246, the lower end of the transmission shaft 244 is fixedly connected with the first transmission gear 245, the first transmission gear 245 is respectively meshed with the main gear 242 and the first tooth 224, and the second transmission gear 246 is meshed with the second tooth 233.

By adopting the technical scheme, the driving motor 241 rotates to drive the main gear 242 to rotate, the main gear 242 is in meshing transmission with the first teeth 224 through the first transmission gear 245, so that the drill cylinder 22 is driven to rotate around the axial direction of the drill cylinder, the first transmission gear 245 rotates and simultaneously drives the second transmission gear 246 to rotate through the transmission shaft 244, and the second transmission gear 246 is in meshing transmission with the second teeth 233, so that the hollow drill rod 23 is driven to rotate around the axial direction of the drill cylinder 22.

Further, referring to fig. 5, the drill cylinder 22 includes a cylindrical section 225 and a conical section 226 disposed at the bottom of the cylindrical section 225, the external thread 221 includes a first external thread 2211 and a second external thread 2212, the first external thread 2211 is disposed on the outer circumferential wall of the cylindrical section 225 located below the limit ring 211, the first tooth 224 is disposed on the outer circumferential wall of the cylindrical section 225 located above the limit ring 211, the second external thread 2212 is disposed on the outer surface of the conical section 226, and the plurality of filling holes 222 are uniformly distributed on the outer surface of the conical section 226.

By adopting the technical scheme, the conical section 226 is arranged, the soil body can be conveniently penetrated for reaming, and the cylindrical section 225 can be arranged to obtain the effect of large pile body diameter. Through set up second external screw thread 2212 on toper section 226 surface, further improve and bore a section of thick bamboo 22 and pierce the soil body and carry out reaming efficiency, set up first external screw thread 2211 through cylindricality section 225, be favorable to improving the reaming efficiency of the crowded soil of a section of thick bamboo 22, can also form the screw thread to stake downthehole wall simultaneously, the soil body of stake week solidifies the back and closely builds solid with threaded pile body concrete and bonds, form the combination pile body, there is the effect of increase pile body diameter, make the resistance to compression of single pile, resistance to plucking bearing capacity all improves greatly. Through set up first external screw thread 2211 on the cylindricality section 225 periphery wall at spacing ring 211 below place, and then make the cylindricality section 225 periphery wall with spacing ring 211 looks adaptation belong to smooth setting, avoid boring a section of thick bamboo 22 and spacing ring 211 to block because of the concrete adheres to and influences its rotation. In this embodiment, the stop collar 211 and the drill cylinder 22 are in clearance fit. By evenly distributing the plurality of pouring holes 222 on the outer surface of the conical section 226, the concrete pumped into the drill barrel 22 can uniformly flow out of the pouring holes 222 and fill the pile holes when the drill barrel 22 in the drilling tool 2 is lifted in the reverse rotation direction.

Further, a flap 2221 is disposed on the filling hole 222, and the lower end of the flap 2221 is hinged to the sidewall of the tapered section 226. By adopting the structure, when the drilling drum 22 is used for soil squeezing and hole expanding, the loose-leaf cover plate 2221 can block the filling hole 222, so that soil in the pile hole is prevented from entering the drilling drum 22 through the filling hole 222, and further the filling hole 222 is prevented from being blocked, and subsequent concrete filling is influenced. When the drill cylinder 22 rotates in the opposite direction and is pulled out of the pile hole, the loose-leaf cover plate 2221 is broken by the concrete poured into the drill cylinder 22 under the action of high pressure, so that the concrete is uniformly filled into the pile hole.

Further, referring to fig. 6, the hollow drill rod 23 includes an upper drill rod 234, a lower drill rod 235 and a locking member 236 which are inserted into each other, the second tooth 233 is disposed on an outer peripheral wall of an upper end of the upper drill rod 234, a third external thread 2341 is disposed on an outer peripheral wall of the upper drill rod 234 on which the lower portion of the second tooth 233 is located, a fourth external thread 2351 is disposed on an outer peripheral wall of the lower drill rod 235, the locking member 236 is sleeved between the upper drill rod 234 and the lower drill rod 235, and an internal thread 2361 connected with the third external thread 2341 and the fourth external thread 2351 is disposed in the locking member 236.

By adopting the technical scheme, after the hole expansion of the extruded soil is finished, the upper drill rod 234 is separated from the lower drill rod 235 by rotating the locking piece 236, the linear driving mechanism is utilized to drive the drill 2 to move upwards, meanwhile, the power driving device 24 drives the drill cylinder 22 to rotate in the opposite direction, meanwhile, concrete is pumped in through the opening at the top of the drill cylinder 22, the pile hole is uniformly filled through the filling hole 222 while the drill cylinder 22 rotates, and the lower drill rod 235 has certain self-gravity and is filled with the concrete after the pile hole is filled with the concrete, so that the lower drill rod 235 is left in the pile hole after the drill cylinder 22 is separated from the pile hole, the steel reinforcement cage can be conveniently placed in the follow-up process, the lower drill rod 235 can be used as the central shaft of the pile hole, and the steel reinforcement cage is prevented from being placed eccentrically.

Of course, the embodiment of the utility model provides a, can also not leave drilling rod 235 in advance in the stake hole, when carrying out concrete filling stake hole, the drill pipe 22 and the synchronous downstream of hollow drilling rod 23 on the drilling tool 2 to break away from the stake hole completely, follow-up can adopt other modes to carry out the center counterpoint when placing the steel reinforcement cage.

The drill frame 21 is provided with a mounting hole 212 for inserting the upper drill rod 234, a pipe joint 2121 for connecting a grouting pipe is mounted in the mounting hole 212, and the drill frame 21 is further provided with a fixing frame 213 for fixing a pump pipe. By adopting the technical scheme, the mounting hole 212 is formed in the drill frame 21, so that the upper drill rod 234 can be conveniently inserted into the mounting hole 212 and can rotate in the mounting hole 212, the upper drill rod can be mounted in the mounting hole 212 through the pipe joint 2121 and can be used for connecting a grouting pipe, and meanwhile, the pipe joint 2121 can seal the mounting hole 212. The fixed frame 213 is arranged on the drilling rig 21, so that a concrete pump pipe is convenient to mount, the opening of the pump pipe is aligned with the opening at the top of the drilling barrel 22, and meanwhile, when the drilling rig 21 moves up and down, the relative position of the pump pipe and the opening of the drilling barrel 22 is not changed.

The utility model discloses a concrete construction method of above-mentioned construction equipment, its step includes:

(1) determining the central point of a pile position to be constructed, moving the pile machine 1, leveling and aligning, and preparing for construction;

(2) starting the drilling tool 2 to drill downwards, starting a high-pressure grouting pump after the penetration depth of the drill bit 231 is larger than 30cm, spraying cement slurry into a soil body at high pressure, and rotating the drilling tool 2 with the slurry to drill downwards;

(3) after the drilling is carried out to the designed depth, the upper drill rod 234 and the lower drill rod 235 are disconnected, the drilling drum 22 is reversely rotated and lifted out, the lower drill rod 235 is left in the pile hole, and concrete is pumped into the drilling drum 22 in the rotating and lifting process of the drilling drum 22;

(4) after the concrete in the pile hole is poured to the designed elevation, continuously pumping the concrete until the concrete surface is about 1m higher than the designed elevation, stopping pumping, continuously lifting the drill cylinder 22 out of the ground, moving away, and vacating the space above the pile position;

(5) hoisting the reinforcement cage, sleeving the reinforcement cage on the lower drill rod 235 in a penetrating manner, taking the lower drill rod 235 as a guide shaft of the lower reinforcement cage, and placing the lower drill rod 235 in a pile hole filled with concrete;

(6) after the steel reinforcement cage is placed down, the core drill rod is lifted out in a vibrating mode, and pile body concrete is compacted;

(7) measuring the elevation of the concrete surface, if the elevation is lower than the designed elevation, timely raising the concrete surface, and vibrating to be compact;

(8) and moving the pile driver 1 to construct the next pile position.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An apparatus for constructing a pile by a construction method, comprising:

the pile driver comprises a pile driver (1), wherein a pile frame (11) is vertically and fixedly arranged on the pile driver (1);

the drilling tool (2) is slidably mounted on the pile frame (11), the drilling tool (2) comprises a drilling frame (21), a drilling barrel (22) with an open top, a hollow drill rod (23) and a power driving device (24) are arranged on the drilling frame (21), external threads (221) are arranged on the outer side wall of the drilling barrel (22), a plurality of filling holes (222) are formed in the side wall of the bottom of the drilling barrel (22), the hollow drill rod (23) is inserted into the drilling barrel (22), the drilling barrel (22) extends out of the bottom end of the hollow drill rod (23) and is connected with a drill bit (231), a plurality of guniting holes (232) are formed in the drill bit (231), the top end of the hollow drill rod (23) is used for being connected with a grouting pipe, and the power driving device (24) is used for driving the drilling barrel (22) and the hollow drill rod (23) to rotate;

the linear motion mechanism (3) is arranged at the upper end of the pile frame (11) and is used for driving the drilling tool (2) to move up and down along the drilling frame (21).

2. The construction method pile construction apparatus as set forth in claim 1, wherein: the pile frame is characterized in that a first sliding rail (12) is fixedly mounted on the side wall of the lower section of the pile frame (11), and a first sliding block (13) connected with the first sliding rail (12) is fixedly mounted on the drill frame (21).

3. The construction method pile construction apparatus as set forth in claim 2, wherein: linear motion mechanism (3) include second slide rail (31), second slider (32), lifter (33), toothed disc (34) and servo motor (35), wherein, second slide rail (31) fixed mounting is on pile frame (11) upper segment lateral wall, and second slider (32) sliding connection is on second slide rail (31), the one end and second slider (32) fixed connection of lifter (33), the other end and drill frame (21) fixed connection, are provided with spur rack (321) on the lateral wall of second slider (32), servo motor (35) fixed mounting is on pile frame (11), the output shaft of servo motor (35) and the center pin fixed connection of toothed disc (34), toothed disc (34) are connected with spur rack (321) meshing.

4. The construction method pile construction apparatus as set forth in claim 2, wherein: the linear motion mechanism (3) is a telescopic hydraulic cylinder, and a piston rod in the telescopic hydraulic cylinder is fixedly connected with the drill frame (21).

5. The construction method pile construction apparatus as set forth in claim 1, wherein: the drill frame (21) is further provided with a limiting ring (211) used for being sleeved with the drill cylinder (22), the peripheral wall of the drill cylinder (22) where the upper end face and the lower end face of the limiting ring (211) are located is respectively provided with a limiting flange (223), the peripheral wall of the upper end of the drill cylinder (22) is provided with first teeth (224), the peripheral wall of the upper end of the hollow drill rod (23) is provided with second teeth (233), the power driving device (24) comprises a driving motor (241), a main gear (242), a rotating seat (243), a transmission shaft (244), a first transmission gear (245) and a second transmission gear (246), wherein one side of the driving motor (241) is fixedly connected with the drill frame (21), an output shaft of the driving motor (241) is fixedly connected with the main gear (242), the other side of the driving motor (241) is fixedly connected with the rotating seat (243), and the transmission shaft (244) is rotatably arranged in the rotating seat (243), the upper end of the transmission shaft (244) is fixedly connected with the second transmission gear (246), the lower end of the transmission shaft (244) is fixedly connected with the first transmission gear (245), the first transmission gear (245) is respectively meshed with the main gear (242) and the first tooth (224), and the second transmission gear (246) is meshed with the second tooth (233).

6. The construction method pile construction apparatus as set forth in claim 5, wherein: the drill cylinder (22) comprises a cylindrical section (225) and a conical section (226) arranged at the bottom of the cylindrical section (225), the external thread (221) comprises a first external thread (2211) and a second external thread (2212), the first external thread (2211) is arranged on the outer peripheral wall of the cylindrical section (225) on the lower portion of the limit ring (211), the first teeth (224) are arranged on the outer peripheral wall of the cylindrical section (225) on the upper portion of the limit ring (211), the second external thread (2212) is arranged on the outer surface of the conical section (226), and the filling holes (222) are uniformly distributed on the outer surface of the conical section (226).

7. The construction method pile construction apparatus as set forth in claim 6, wherein: the pouring hole (222) is provided with a hinge cover plate (2221), and the lower end of the hinge cover plate (2221) is hinged with the side wall of the conical section (226).

8. The construction method pile construction apparatus as set forth in claim 5, wherein: hollow drilling rod (23) are including last drilling rod (234), lower drilling rod (235) and retaining member (236) of pegging graft each other, second tooth (233) set up on last drilling rod (234) upper end periphery wall, be provided with third external screw thread (2341) on the periphery wall of last drilling rod (234) at second tooth (233) below place, be provided with fourth external screw thread (2351) on the periphery wall of drilling rod (235) down, retaining member (236) cup joint between last drilling rod (234) and lower drilling rod (235), just be provided with internal thread (2361) that are connected with third external screw thread (2341) and fourth external screw thread (2351) in retaining member (236).

9. The construction method pile construction apparatus as set forth in claim 8, wherein: the drilling rig is characterized in that a mounting hole (212) for inserting the upper drill rod (234) is formed in the drilling rig (21), a pipe joint (2121) for connecting a grouting pipe is mounted in the mounting hole (212), and a fixing frame (213) for fixing a pump pipe is further arranged on the drilling rig (21).