CN117188954A - Rectangular pile drilling machine equipment - Google Patents

Abstract

The embodiment of the application provides rectangular pile drilling machine equipment, which comprises the following components: the single drill bit comprises a plurality of rectangular single drill bits, wherein the side surfaces of the single drill bits are provided with side surface connecting pieces, and the top surfaces of the single drill bits are provided with top surface connecting pieces; the side faces of the single drill bit are detachably connected through the side face connecting pieces, and the top faces of the single drill bit are detachably connected through the top face connecting pieces so as to be assembled to form a rectangular drill bit assembly. The embodiment of the application solves the technical problem that the traditional square pile hole forming equipment needs to be provided with a plurality of rectangular drill bits with the cross section size.

Description

Rectangular pile drilling machine equipment

Technical Field

The application relates to the technical field of engineering machinery manufacturing, in particular to rectangular pile drilling machine equipment and a construction method thereof.

Background

Rectangular piles and round piles have larger side areas under the conditions of equal cross sections and equal materials, so that the rectangular piles have larger side friction force, high rigidity and higher bending resistance, and the square piles are superior to the round piles in the aspect of directional stress. In particular, in the high slope protection engineering, the rectangular pile is widely applied as an anti-slide pile. And the square pile is difficult to form holes, so that the large-size rectangular pile is constructed by manually digging holes. Manual hole digging is performed, so that the construction efficiency is low; after exceeding a certain depth, safety measures such as water pumping, ventilation and the like are needed, so that the construction cost is increased, and the safety risk is high; the perpendicularity and flatness of the pile hole are greatly influenced by artificial factors, the construction quality is poor in stability, and the pile hole is not easy to control; the construction efficiency is low.

In the prior art, a square pile hole forming apparatus (CK 105113986 a) is disclosed. The center drill bit is used for rotary drilling in advance, a round pile hole is drilled, and then a cutting assembly is used for following tunneling to form a square pile hole, so that the mechanical hole forming of the square pile is realized. As shown in fig. 1, the square pile hole forming device comprises a main machine walking part 11, a drill rod 2, a drilling power part 3, a drilling machine rear shell 4, a drilling machine front shell 5, a cutting assembly 7 and a center drill bit 9.

The problems are:

1. when the section sizes of the piles are different, rectangular drill bits with different section sizes are required to be manufactured, so that the time consumption is long and the resource waste is easy to cause;

2. the prior art equipment cannot automatically correct deviation, the verticality of the hole in the square pile excavation process depends on manual control, the verticality in the hole forming process cannot be ensured, and the hole forming quality is poor;

3. when the sectional area of the pile is larger, the construction and transportation difficulty of large-section equipment is high, and the construction difficulty in complex areas is high;

4. the power device applies force unidirectionally, and the efficiency is low.

5. When geological conditions suddenly change or complicated geological conditions such as faults occur, the rotation speed of the drill bit suddenly changes due to the reasons of stress magnitude, direction suddenly changes, stone jamming and the like, and the conditions such as drill jamming and the like are easy to occur.

Therefore, the conventional square pile hole forming equipment needs to be provided with a plurality of rectangular drill bits with the cross section size, and the technical problem to be solved is urgent for those skilled in the art.

The above information disclosed in the background section is only for enhancement of understanding of the background of the application and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art.

Disclosure of Invention

The embodiment of the application provides rectangular pile drilling machine equipment, which aims to solve the technical problem that a plurality of rectangular drill bits with the cross section size are required to be equipped in the traditional square pile hole forming equipment.

The embodiment of the application provides rectangular pile drilling machine equipment, which comprises the following components:

the single drill bit comprises a plurality of rectangular single drill bits, wherein the side surfaces of the single drill bits are provided with side surface connecting pieces, and the top surfaces of the single drill bits are provided with top surface connecting pieces;

the side faces of the single drill bit are detachably connected through the side face connecting pieces, and the top faces of the single drill bit are detachably connected through the top face connecting pieces so as to be assembled to form a rectangular drill bit assembly.

By adopting the technical scheme, the embodiment of the application has the following technical effects:

the rectangular pile drilling machine equipment provided by the embodiment of the application is provided with a plurality of rectangular single drill bits. The side of a plurality of monomer drill bits can realize the detachable connection of monomer drill bit through the side connecting piece, and the top surface of monomer drill bit can realize the detachable connection of monomer drill bit through the top surface connecting piece to realize being in the same place a plurality of monomer drill bits stable fixation, assemble the drill bit subassembly that forms the rectangle promptly. In this way, a certain number of single drill bits can be fixed as required, for example, four single drill bits can be fixed together to form a rectangular drill bit assembly. According to the rectangular pile drilling machine equipment provided by the embodiment of the application, the number of the single drill bits corresponding to the size of the actual rectangular pile hole aperture can be selected according to the size of the actual rectangular pile hole aperture in engineering, and the single drill bits are fixed together to form a rectangular drill bit assembly. The rectangular pile drilling machine equipment provided by the embodiment of the application can assemble rectangular drill bit assemblies with different section forms according to the size of the aperture of an actual rectangular pile hole, and realize excavation of square piles with different sections.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a schematic diagram of a square pile hole forming apparatus in the background art;

FIG. 2 is a schematic view of a rectangular pile drilling rig apparatus according to an embodiment of the present application;

FIG. 3 is a top view of FIG. 2;

FIG. 4A is a schematic view of a single bit of the rectangular pile drilling apparatus of FIG. 2;

FIG. 4B is a schematic view of the single bit of FIG. 4A at another angle;

FIG. 5 is a schematic view of the single bit 4, drill pipe bit connector 6 and drill pipe 5 connections of the rectangular pile drilling rig apparatus of FIG. 2;

FIG. 6A is a schematic view of the drill rod and bit connection 6 of the rectangular pile drilling apparatus of FIG. 2;

FIG. 6B is a schematic view of the drill rod and bit connector 6 of FIG. 6A at another angle;

FIG. 7 is a schematic view of the rectangular pile drilling rig apparatus drill pipe 5 of FIG. 2;

FIG. 8 is a schematic view of another form of drill rod and bit connection 6 of the rectangular pile drilling apparatus of FIG. 2;

FIG. 9 is a schematic view of the rectangular pile drilling rig apparatus of FIG. 2 with a tapered rotary drill bit 4-7-4, rotary power rod 4-7-2 and center rotary drill bit 4-7-1;

FIG. 10 is a schematic view of a rectangular cutting power unit 4-5-3 and a rectangular boundary cutter 4-5-2 of the rectangular pile drilling machine apparatus shown in FIG. 2;

FIG. 11 is a schematic view of a main frame of the rectangular pile drilling rig apparatus of FIG. 2;

fig. 12 is a schematic view of the azimuth-sensing adjustment power arm 3 of the rectangular pile drilling machine apparatus shown in fig. 2.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of exemplary embodiments of the present application is provided in conjunction with the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application and not exhaustive of all embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

Example 1

As shown in fig. 2 to 5, the rectangular pile drilling machine equipment according to the embodiment of the present application includes a plurality of rectangular unit drill bits 4, wherein the side surfaces of the unit drill bits are provided with side surface connectors, and the top surfaces of the unit drill bits are provided with top surface connectors;

the side faces of the single drill bit are detachably connected through the side face connecting pieces, and the top faces of the single drill bit are detachably connected through the top face connecting pieces so as to be assembled to form a rectangular drill bit assembly.

The rectangular pile drilling machine equipment provided by the embodiment of the application is provided with a plurality of rectangular single drill bits. The side of a plurality of monomer drill bits can realize the detachable connection of monomer drill bit through the side connecting piece, and the top surface of monomer drill bit can realize the detachable connection of monomer drill bit through the top surface connecting piece to realize being in the same place a plurality of monomer drill bits stable fixation, assemble the drill bit subassembly that forms the rectangle promptly. In this way, a certain number of single drill bits can be fixed as required, for example, four single drill bits can be fixed together to form a rectangular drill bit assembly. According to the rectangular pile drilling machine equipment provided by the embodiment of the application, the number of the single drill bits corresponding to the size of the actual rectangular pile hole aperture can be selected according to the size of the actual rectangular pile hole aperture in engineering, and the single drill bits are fixed together to form a rectangular drill bit assembly. The rectangular pile drilling machine equipment provided by the embodiment of the application can assemble rectangular drill bit assemblies with different section forms according to the size of the aperture of an actual rectangular pile hole, and realize excavation of square piles with different sections.

In practice, as shown in fig. 4A, the side connector comprises:

the single side face grooves 4-8 are formed in four side faces of the single drill bit;

the single-body side connector 4-1, the single-body side connector 4-1 is fixed in the single-body side groove 4-8, the telescopic connector 4-1-1 of the single-body side connector 4-1 can extend and retract into the single-body side groove 4-8, and the end part of the telescopic connector 4-1-1 is provided with a telescopic clamping groove 4-1-2 which can extend and retract;

the telescopic connector 4-1-1 is used for extending into a monomer side groove 4-8 at a corresponding position of an adjacent monomer, and the telescopic clamping groove 4-1-2 of the telescopic connector extends to be fixedly connected with the fixing groove 4-8-1 on the inner wall of the monomer side groove 4-8.

At least one single side groove 4-8 is arranged on each of four sides of the rectangular single drill bit, and a single side connector is fixed in each single side groove 4-8. For convenience of description, the two unit bits will be referred to as a first unit bit and a second unit bit, respectively:

the telescopic connector 4-1-1 of the first single bit is retracted into the single side groove 4-8, the telescopic connector 4-1-1 of the second single bit is extended into the single side groove 4-8 retracted by the telescopic connector 4-1-1 of the first single bit, the telescopic clamping groove 4-1-2 of the telescopic connector 4-1-1 of the second single bit is extended into the fixed groove 4-8-1 on the inner wall of the single side groove 4-8 retracted by the telescopic connector 4-1-1 of the first single bit to be fixed. Thus, by a simple structure, detachable connection of a plurality of single drills in the transverse direction is realized.

Specifically, as shown in fig. 4A, the telescopic connector 4-1-1 is controlled to be telescopic and flush with the side surface of the single drill bit, so that the single drill bit is prevented from entering the rock-soil body to form a blockage in the single side surface groove 4-8.

Specifically, as shown in FIG. 4A, three single-body side grooves 4-8 are provided on each side of the single-body drill bit.

Thus, each side of each single drill bit can be connected in a detachable mode through three positions, and the detachable connection is more stable in connection.

In practice, as shown in fig. 4A and 5, the top surface connector comprises:

a plurality of single top surface connecting holes 4-2 which are arranged at four edges of the top surface of the single drill bit;

and the double-body top surface connecting pieces 4-4 are used for being fixed with the single top surface connecting holes of the adjacent single drill bit.

A double-body top surface connecting piece 4-4 and single-body top surface connecting holes 4-2 of two single-body drills are detachably connected. In this way, by a simple structure, a detachable connection of a plurality of single drills in the longitudinal direction is achieved.

In practice, as shown in fig. 4A, the top surface connector further includes:

the top surface edge connecting piece 4-3 is used for sealing the orifice of the monomer top surface connecting hole 4-2 at the edge without adjacent monomers, so as to prevent sundries from entering the orifice of the connecting hole in the excavation process;

the top surface exposed end 4-6 is used for being connected with a single connector 6-1 on the drill rod and drill bit connecting piece 6, and the top surface exposed end 4-6 is provided with a top surface exposed end liquid inlet cavity 4-6-1 and a top surface exposed end slurry outlet cavity 4-6-2.

In practice, as shown in fig. 4A and 10, the single bit includes:

an outer drill bit 4-5 for rectangular cutting, wherein the outer drill bit comprises a rectangular hole-forming drill bit shell 4-5-1 and a plurality of rectangular boundary cutters 4-5-2, and the rectangular boundary cutters 4-5-2 are arranged on the end face of the lower end of the rectangular hole-forming drill bit shell 4-5-1;

an inner drill bit 4-7 performing circular rotary drilling, the inner drill bit being mounted at an inner top of the rectangular hole-forming bit housing 4-5-1 and being rotatable with respect to the rectangular hole-forming bit housing 4-5-1;

the single drill bit 4 can move downwards in the vertical direction to drive the inner drill bit 4-7 to rotate for circular rotary digging, and simultaneously drive the outer drill bit 4-5 to perform rectangular cutting on the outer side of the circular rotary digging.

When the single bit 4 moves downwards in the vertical direction, the inner bit rotates downwards to perform circular rotary excavation, namely the inner bit cuts the rock-soil body, so that the excavation of the middle circular core rock-soil body is completed, and a temporary face is formed to release stress. When the single bit moves downwards in the vertical direction, the inner bit moves downwards to carry out circular rotary digging, and meanwhile, the rectangular hole-forming bit shell 4-5-1 of the outer bit and each rectangular boundary cutter 4-5-2 also move downwards to carry out rectangular cutting, namely, the rectangular boundary cutters carry out rectangular cutting of peripheral soil. Through setting up the setting mode of single drill bit into interior drill bit and outer drill bit for circular dig soon and rectangular cutting can go on simultaneously, form the pore-forming step of every single drill bit less, and the speed is faster, and efficiency is higher.

In practice, as shown in fig. 4A and 4B, the outer drill bit further comprises:

a plurality of high-pressure liquid gun cutting bits 4-5-4, each of the high-pressure liquid gun cutting bits 4-5-4 being mounted on a lower end face of the rectangular hole-forming bit housing 4-5-1 such that the high-pressure liquid gun cutting bits 4-5-4 jet high-pressure liquid;

wherein, the position of the liquid spraying of the high-pressure liquid gun cutting drill bit 4-5-4 is higher than the bottom end of the rectangular boundary cutter 4-5-2.

In this way, the rectangular boundary cutter 4-5-2 is contacted with the surrounding soil to perform rectangular cutting, and at the moment, the high-pressure liquid gun cutting drill 4-5-4 sprays high-pressure liquid to mix the soil body and the liquid to form slurry.

In practice, as shown in fig. 6A, 6B and 8, the rectangular pile drilling machine apparatus further comprises a drill rod and a drill rod bit connector 6, the drill rod bit connector 6 comprising:

a connecting frame 6-2;

a plurality of single connectors 6-1 formed at the bottom of the connecting frame 6-2, wherein the single connectors 6-1 are used for connecting single drill bits 4;

and a total connector 6-3 formed at the top center of the connecting frame 6-2, and connected with the drill rod 5. Wherein, the bottom of the monomer connector 6-1 is provided with a connector liquid inlet cavity 6-1-1 and a connector slurry outlet cavity 6-1-2.

The upper part of the drill rod and drill bit connecting piece 6 is connected with the drill rod 5, and the lower part is installed with the single drill bit 4.

As shown in fig. 5, the connecting frame 6-2 is a cross-shaped connecting frame to connect the four single drill bits 4 to form a rectangular drill bit assembly. Namely, when four single drill bits are required to be connected, a cross-shaped connecting frame is selected, and four single connectors 6-1 are fixed at the end parts of the cross-shaped connecting frame.

Alternatively, as shown, the connecting frame 6-2 is a cross-shaped and a square-shaped connecting frame with coaxial nested shapes, so as to connect eight single drill bits to form a rectangular drill bit assembly. Namely, when eight single drill bits are required to be connected, a connecting frame of a connecting frame in a cross shape and a square shape coaxial nested shape is selected, four single connectors 6-1 are fixed at the end part of the cross-shaped part, and the other four single connectors 6-1 are fixed at the intersection point position of the square shape.

Specifically, as the depth of the hole is deeper and deeper, the number of sections of the drill rod can be increased or decreased as required.

In practice, as shown in FIG. 9, the inner drill bit 4-7 includes:

a conical rotary drill bit 4-7-4 and a rotary power rod 4-7-2 which are arranged from bottom to top;

the center rotary drilling bit 4-7-1 is arranged at the lower part of the rotary drilling power rod 4-7-2;

the rotary drilling power rod slurry outlet hole 4-7-3 is arranged between the conical rotary drill bit 4-7-4 and the central rotary drill bit 4-7-1;

the rotary digging power rod 4-7-2 is provided with a rotary digging power rod slurry outlet cavity 4-7-5 along the length direction, and the rotary digging power rod slurry outlet hole 4-7-3 is communicated with the rotary digging power rod slurry outlet cavity 4-7-5.

The slurry outlet holes 4-7-3 of the rotary digging power rod are communicated with the slurry outlet cavities 4-7-5 of the rotary digging power rod, so that the inner drill bit 4-7 can stir slurry during rotary digging, and slag is not required to be discharged by a lifting drill.

In practice, as shown in fig. 6A, 6B and 8, the single connector 6-1, the connecting frame 6-2 and the total connector 6-3 are internally provided with a drill rod drill bit connector slurry outlet cavity 6-5 and a drill rod drill bit connector liquid inlet cavity 6-4;

as shown in fig. 7, each section of drill rod 5 is provided with a drill rod liquid inlet cavity 5-1 and a drill rod slurry outlet cavity 5-2 along the length direction; wherein:

the drill rod liquid inlet cavity 5-1, the drill rod drill bit connecting piece liquid inlet cavity 6-4, the connector liquid inlet cavity 6-1-1 and the top surface exposed end liquid inlet cavity 4-6-1 are communicated with the high-pressure liquid gun cutting drill bit 4-5-4 so as to provide stirring liquid for the high-pressure liquid gun cutting drill bit 4-5-4;

the rotary digging power rod slurry outlet hole 4-7-3, the rotary digging power rod slurry outlet cavity 4-7-5, the top surface exposed end slurry outlet cavity 4-6-2, the connector slurry outlet cavity 6-1-2, the drill rod drill bit connecting piece slurry outlet cavity 6-5 and the drill rod slurry outlet cavity 5-2 are communicated.

During hole digging, stirring liquid enters the high-pressure liquid gun cutting drill bit 4-5-4 through the drill rod liquid inlet cavity 5-1, the drill rod drill bit connecting piece liquid inlet cavity 6-4, the connector liquid inlet cavity 6-1-1 and the top surface exposed end liquid inlet cavity 4-6-1 for spraying. When the hole is dug, the mixed slurry formed by the single drill bit is sucked out through the inner drill bit rotary digging power rod slurry outlet hole 4-7-3, the rotary digging power rod slurry outlet cavity 4-7-5, the top surface exposed end slurry outlet cavity 4-6-2, the connector slurry outlet cavity 6-1-2, the drill rod drill bit connecting piece slurry outlet cavity 6-5 and the drill rod slurry outlet cavity 5-2. Like this, rectangular pile drilling machine equipment has realized stirring play thick liquid while digging soon, does not need to carry to bore the slag tap, and the integration construction for rectangular pile drilling machine equipment's work efficiency is higher.

In practice, as shown in fig. 2 and 11, the rectangular pile drilling machine apparatus further comprises a main frame 1 comprising:

k power setting frames 1-3 are arranged in a dispersing way, wherein K is more than or equal to 3;

the top end of each power installation frame is detachably connected with two connecting beams 1-1;

the K cross beam telescopic sections 1-2 are connected with two connecting cross beams 1-1 of two adjacent power setting frames 1-3 through the cross beam telescopic sections 1-2, so that the lengths of the two connecting cross beams 1-1 can be adjusted.

The main frame is a mounting foundation of rectangular pile drilling machine equipment and is a structure formed by assembling a power mounting frame 1-3, a connecting beam 1-1 and a beam telescopic section 1-2. Like this, when rectangular pile rig equipment transportation, can disassemble the main frame, convenient transportation. The connecting cross beam 1-1 connected with the two power installation frames 1-3 is connected through the cross beam telescopic section 1-2, so that the distance between the two power installation frames 1-3 can be adjusted to adapt to the working sites of various rectangular pile drilling machine equipment; the assembled main frame has firm structure. If the distances between every two power setting frames 1-3 in the K power setting frames 1-3 can be adjusted to be equal, namely the main frame is a positive K-sided polygon.

In practice, as shown in fig. 2, the rectangular pile drilling machine apparatus further comprises a drilling power section 2, said drilling power section 2 comprising:

the K hydraulic power telescopic cylinders 2-1 are respectively fixed at the lower parts of the K power rest frames 1-3, and piston rods of the hydraulic power telescopic cylinders face upwards;

k connecting steel plates 2-2 are respectively fixed at the top ends of piston rods of K hydraulic power telescopic cylinders;

the K azimuth induction adjustment power arms 3, one ends of the K azimuth induction adjustment power arms 3 are respectively connected to the K connecting steel plates 2-2, the other ends of the K azimuth induction adjustment power arms 3 are respectively detachably connected with the pull rod, and the lengths of the K azimuth induction adjustment power arms 3 in the transverse direction can be adjusted;

wherein the azimuth induction adjusting power arm 3 is connected with the drill rod 5.

Each power setting frame 1-3 corresponds to a group of hydraulic power telescopic cylinders 2-1, connecting steel plates 2-2 and azimuth induction adjusting power arms 3. The hydraulic power telescopic oil cylinder 2-1, the connecting steel plate 2-2 and the azimuth induction adjusting power arm 3 of the K groups respectively provide power for the drill bit assembly. The drill rod pressing and pulling force is applied in multiple directions. Under the condition that the main frame is a positive K-edge shape, the drill rod pressing and pulling force is uniformly applied in multiple directions, the power application process is more stable, and the construction efficiency is improved.

In practice, as shown in fig. 12, the azimuth-sensing adjustment power arm 3 includes:

a telescopic arm 3-1 which can be telescopic;

and one end of the telescopic arm 3-1 is fixed with the connecting steel plate 2-2, the other end of the telescopic arm is fixed with the drill rod clamping head 3-3, and the drill rod clamping head 3-3 is detachably connected with the drill rod 5.

The telescopic arms 3-1 of the K azimuth induction adjustment power arms 3 can be telescopic, so that the drill rod clamping heads 3-3 of the K azimuth induction adjustment power arms 3 can clamp the same drill rod 5.

In practice, as shown in fig. 12, the azimuth-sensing adjustment power arm 3 further includes:

the two-dimensional adjusting plate 3-2 is arranged on the plane, and the drill rod clamping head 3-3 is connected to the end part of the telescopic arm 3-1 through the two-dimensional adjusting plate 3-2 so as to rotate and adjust the drill rod clamping head 3-3 in the vertical and horizontal directions; wherein the plane two-dimensional adjusting disc 3-2 is also used for sensing the azimuth of the drill rod clamping head 3-3;

the rectangular pile drilling machine equipment also comprises K controllers 7 which are respectively fixed at the K connecting steel plates; the controller 7 is respectively in communication connection with a hydraulic power telescopic cylinder 2-1, a telescopic arm 3-1, a plane two-dimensional adjusting disc 3-2 and a drill rod clamping head 3-3 which are arranged on the same power setting frame 1-3;

the controller 7 is used for controlling the hydraulic power telescopic cylinder 2-1, the telescopic arm 3-1 and the plane two-dimensional adjusting disc 3-2 which are arranged on the same power setting frame 1-3 according to the azimuth information of the induction drill rod clamping head 3-3 so as to keep the perpendicularity of the drill rod clamping head 3-3 within a perpendicularity preset range.

The hydraulic power telescopic oil cylinder 2-1, the telescopic arm 3-1, the plane two-dimensional adjusting disc 3-2 and the drill rod clamping head 3-3 are controlled by the controller, so that the hydraulic power telescopic oil cylinder 2-1 drives the drill rod 5 to move up and down, the telescopic arm 3-1 drives the drill rod 5 to move in the horizontal direction, and the plane two-dimensional adjusting disc 3-2 drives the drill rod 5 to move in the vertical direction so as to keep the perpendicularity of the drill rod clamping head 3-3 within a perpendicularity preset range. The intelligent regulation of the perpendicularity of the drill rod can correct the deviation of the single drill bit 4, so that the perpendicularity of the single drill bit 4 is ensured, and the hole forming quality of square pile excavation is improved.

In practice, as shown in fig. 10, the single bit 4 further includes rectangular cutting power devices 4-5-3 corresponding to the rectangular boundary cutters one by one, and the controller 7 is respectively in communication connection with the rectangular cutting power devices 4-5-3 and the rotary digging power rods 4-7-2 mounted on the same power setting frame 1-3;

the controller 7 is used for controlling the rectangular cutting power device 4-5-3 to provide vertical cutting force for the rectangular boundary cutter 4-5-2 and controlling the rotary digging power rod 4-7-2 to provide rotary digging power for the central rotary digging drill 4-7-1.

The rotary digging power rod 4-7-2 of each single drill bit is independently controlled by a controller.

The rectangular cutting power units 4-5-3 of the same single drill bit can be controlled by a controller integrally, and preferably, each rectangular cutting power unit 4-5-3 of the same single drill bit can be controlled by a controller independently.

The reason for this is that: when the same cross section and different stratum conditions are seen horizontally, under the same power condition, the rotating speeds of different center rotary drilling drills 4-7-1 and the cutting progress of rectangular boundary cutters 4-5-2 can be different, and the controller 7 intelligently adjusts the power of each rotary drilling power rod 4-7-2 and the power of the hydraulic power telescopic cylinder 2-1 so as to ensure that the excavation progress of the same cross section is consistent. The excavation progress on the same horizontal plane is guaranteed to be consistent, and the pore-forming quality is high.

In practice, the controller 7 is also configured to:

when encountering abrupt soil or encountering special strata such as boulders, the absolute value of the difference value between the current rotation speed n2 of the center rotary drilling bit 4-7-1 and the stable rotation speed n1 before the center rotary drilling bit 4-7-1 is changed exceeds the preset value range of the rotation speed difference, and the drilling progress in the vertical direction of the drilling power part 2 needs to be changed in time by adjusting the power of the hydraulic power telescopic oil cylinder 2-1; the power of the rotary digging power rod 4-7-2 is adjusted to change the rotating speed of the central rotary digging drill 4-7-1; the cutting force of the rectangular boundary cutters 4-5-2 is changed by adjusting the power of the rectangular cutting power device 4-5-3 so as to adapt to the existing stratum state, and extreme phenomena such as drill sticking, low-efficiency drilling, drill bit damage and the like are avoided, so that construction is stopped, and the construction efficiency is influenced.

In practice, the controller 7 is also configured to:

when encountering abrupt soil layer or special stratum such as boulder, the absolute value of the difference value of the vertical propulsion process s2 of the rectangular boundary cutter 4-5-2 and the stable propulsion process s1 before the rectangular boundary cutter 4-5-2 is changed exceeds the range of the preset process difference value, and the drilling progress in the vertical direction of the drilling power part 2 needs to be changed in time by adjusting the power of the hydraulic power telescopic cylinder 2-1; the power of the rotary digging power rod 4-7-2 is adjusted to change the rotating speed of the central rotary digging drill 4-7-1; the cutting force of the rectangular boundary cutters 4-5-2 is changed by adjusting the power of the rectangular cutting power device 4-5-3 so as to adapt to the existing stratum state, and extreme phenomena such as drill sticking, low-efficiency drilling, drill bit damage and the like are avoided, so that construction is stopped, and the construction efficiency is influenced.

The using method of the rectangular pile drilling machine equipment comprises the following steps:

1. positioning and assembling equipment:

positioning, assembling and connecting a beam 1-1, a beam telescopic section 1-2 and a power rest frame 1-3 to form a main frame 1, and assembling a drilling power part 2 and an azimuth induction adjusting power arm 3. The three position sensing adjustment power arms 3 require centering of the rod clamping head 3-3.

The single drill bit 4 is assembled according to the requirements, the extending telescopic connectors 4-1-1 extend into the single side grooves 4-8 of the telescopic connectors 4-1-1 at the corresponding positions of the side surfaces of the adjacent single drill bits 4 after being retracted, and the telescopic clamping grooves 4-1-2 at the end parts automatically extend into the fixing grooves 4-8-1 on the inner wall to be connected and fixed. The telescopic connectors 4-1-1 are positioned on the side surfaces of the edge single drill bit 4 which are not required to be connected, and the single side grooves 4-8 are prevented from re-entering the rock-soil body to be blocked by controlling the telescopic connectors to be parallel and level with the side surfaces. Adjacent two single bit 4 with common edge are connected with single top connecting hole 4-2 through double top connecting piece 4-4. And selecting a suitable drill rod bit connector 6 to connect several individual drill bits 4.

The drill rod 5 sequentially passes through the drill rod clamping heads 3-3 on the three azimuth induction adjustment power arms 3, and the lower end of the drill rod is fixedly connected with the drill rod bit connecting piece 6.

2. Drilling and soil sampling

The center rotary drilling bit 4-7-1 of the single bit 4 rotary drills the center soil body, the rectangular boundary cutter 4-5-2 cuts the soil body to form a rectangular boundary, and the single connector 6-1 transmits slurry.

The drill rod clamping head 3-3 clamps the drill rod 5 and drives the drill rod 5 to perform up-and-down drilling motion through the adjustment of the controller 7, so that soil is excavated.

3. Deviation rectifying device

The plane two-dimensional induction adjusting disc 3-2 on the azimuth induction adjusting power arm 3 can induce the azimuth of the drill rod clamping head 3-3, azimuth information is transmitted to the controller 7, the controller 7 judges and analyzes the obtained azimuth information, the plane two-dimensional induction adjusting disc 3-2 is adjusted to perform vertical direction rotary motion, the telescopic arm 3-1 is adjusted to perform horizontal telescopic motion, the drilling power part 2 is adjusted to perform vertical direction up-and-down motion, and azimuth induction and adjustment in the drilling process of the drill rod are realized from three dimensions.

4. Intelligent rotary digging rotation speed and drilling power

1) When encountering abrupt formation or fault, the controller 7 senses the sensed abrupt center rotary drill 4-7-1 rotation speed n2 and the stable rotation speed n1 before change to compare from the longitudinal direction:

when the difference value between n1 and n2 is in a controllable range, the power of the rotary drilling power rod 4-7-2 and the power of the hydraulic power telescopic cylinder 2-1 on the drilling power part 2 are intelligently adjusted, and the rotating speed of the central rotary drilling drill 4-7-1 and the progress of the drilling power part 2 in the vertical direction are adjusted;

when encountering abrupt soil or encountering special strata such as boulders, the absolute value of the difference value between the current rotation speed n2 of the center rotary drilling bit 4-7-1 and the stable rotation speed n1 before the center rotary drilling bit 4-7-1 is changed exceeds the preset value range of the rotation speed difference, and the drilling progress in the vertical direction of the drilling power part 2 needs to be changed in time by adjusting the power of the hydraulic power telescopic oil cylinder 2-1; the power of the rotary digging power rod 4-7-2 is adjusted to change the rotating speed of the central rotary digging drill 4-7-1; the cutting force of the rectangular boundary cutters 4-5-2 is changed by adjusting the power of the rectangular cutting power device 4-5-3 so as to adapt to the existing stratum state, and extreme phenomena such as drill sticking, low-efficiency drilling, drill bit damage and the like are avoided, so that construction is stopped, and the construction efficiency is influenced.

Likewise, the vertical advance s2 of the rectangular boundary cutter 4-5-2, which is suddenly changed, is sensed by the controller 7, and the stable advance s1 before the change is compared:

when the difference value between s1 and s2 is in a controllable range, the power of the rectangular cutting power device 4-5-3 and the power of the hydraulic power telescopic cylinder 2-1 on the drilling power part 2 can be intelligently adjusted, and the vertical propelling progress of the rectangular boundary cutter 4-5-2 and the progress of the drilling power part 2 in the vertical direction are adjusted;

when encountering abrupt soil layer or special stratum such as boulder, the absolute value of the difference value of the vertical propulsion process s2 of the rectangular boundary cutter 4-5-2 and the stable propulsion process s1 before the rectangular boundary cutter 4-5-2 is changed exceeds the range of the preset process difference value, and the drilling progress in the vertical direction of the drilling power part 2 needs to be changed in time by adjusting the power of the hydraulic power telescopic cylinder 2-1; the power of the rotary digging power rod 4-7-2 is adjusted to change the rotating speed of the central rotary digging drill 4-7-1; the cutting force of the rectangular boundary cutters 4-5-2 is changed by adjusting the power of the rectangular cutting power device 4-5-3 so as to adapt to the existing stratum state, and extreme phenomena such as drill sticking, low-efficiency drilling, drill bit damage and the like are avoided, so that construction is stopped, and the construction efficiency is influenced.

2) When the same cross section and different stratum conditions are seen horizontally, under the same power condition, the rotating speeds of the rotary drilling tools 4-7 at different centers and the cutting progress of the rectangular boundary cutters 4-5-2 are different, and the controller 7 intelligently adjusts the power of each rotary drilling power rod 4-7-2 and the power of the hydraulic power telescopic cylinder 2-1 on the drilling power part 2 so as to ensure that the excavation progress of the same cross section is consistent. The excavation progress on the same horizontal plane is guaranteed to be consistent, and the pore-forming quality is high.

In combination, the perpendicularity of the drill rod accords with the perpendicularity preset range, the excavation power system is flexible, the excavation progress is intelligently controlled, and the piling quality of the rectangular piles can be effectively ensured.

In describing the present application and its embodiments, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "height", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the present application and its embodiments, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrated; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application and its embodiments, unless explicitly specified and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include both the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

The above disclosure provides many different embodiments, or examples, for implementing different structures of the application. The foregoing description of specific example components and arrangements has been presented to simplify the present disclosure. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (15)

1. A rectangular pile drilling machine apparatus, comprising:

a plurality of rectangular single drill bits (4), wherein the side surfaces of the single drill bits (4) are provided with side surface connecting pieces, and the top surfaces of the single drill bits are provided with top surface connecting pieces;

the side faces of the single drill bit are detachably connected through the side face connecting pieces, and the top faces of the single drill bit are detachably connected through the top face connecting pieces so as to be assembled to form a rectangular drill bit assembly.

2. The rectangular pile drilling apparatus of claim 1, wherein the side connector comprises:

the single side face grooves (4-8) are arranged on four side faces of the single drill bit (4);

the single side connector (4-1), the single side connector (4-1) is fixed in the single side groove (4-8), and the telescopic connector (4-1-1) of the single side connector (4-1) can extend out and retract into the single side groove (4-8);

the telescopic connector (4-1-1) is used for extending into a monomer side groove (4-8) at a corresponding position of an adjacent monomer, and meanwhile, a telescopic clamping groove (4-1-2) of the telescopic connector (4-1-1) extends into a fixing groove (4-8-1) on the inner wall of the monomer side groove (4-8) to be fixedly connected.

3. The rectangular pile drilling apparatus of claim 1, wherein said top surface connector comprises:

a plurality of single top surface connecting holes (4-2) which are arranged at the edge of the top surface of the single drill bit;

a plurality of double-body top surface connecting pieces (4-4) which are used for being fixed with the single-body top surface connecting holes (4-2) of the adjacent single-body drill bits;

the top surface edge connecting piece (4-3) is used for sealing the orifice of the monomer top surface connecting hole (4-2) at the edge without adjacent monomers, so as to prevent sundries from entering the orifice of the connecting hole in the excavation process;

the top surface exposing end (4-6) is used for being connected with the single connector (6-1) on the drill rod drill bit connecting piece (6), and the top surface exposing end (4-6) is provided with a top surface exposing end liquid inlet cavity (4-6-1) and a top surface exposing end slurry outlet cavity (4-6-2).

4. A rectangular pile drilling apparatus according to claim 3, wherein the single bit comprises:

the outer drill bit (4-5) comprises a rectangular drill bit shell (4-5-1) and a plurality of rectangular boundary cutters (4-5-2), wherein the rectangular boundary cutters (4-5-2) are arranged on the end face of the lower end of the rectangular drill bit shell (4-5-1);

an inner drill bit performing circular rotary drilling, the inner drill bit (4-7) being mounted at an inner tip of the rectangular hole drill shell (4-5-1) and being rotatable relative to the rectangular hole drill shell (4-5-1);

the single drill bit (4) can move downwards in the vertical direction to drive the inner drill bit (4-7) to rotate for circular rotary digging, and simultaneously drive the outer drill bit (4-5) to perform rectangular cutting on the outer side of the circular rotary digging.

5. Rectangular pile drilling apparatus according to claim 4, characterized in that the outer drill bit (4-5) further comprises:

a plurality of high-pressure liquid gun cutting bits (4-5-4), each of the high-pressure liquid gun cutting bits (4-5-4) being mounted on a lower end face of the rectangular drill bit housing (4-5-1) such that the high-pressure liquid gun cutting bits (4-5-4) jet out high-pressure liquid;

wherein the liquid spraying position of the high-pressure liquid gun cutting drill bit (4-5-4) is higher than the bottom end of the rectangular boundary cutter (4-5-2).

6. Rectangular pile drilling apparatus according to claim 5, further comprising a drill rod (5) and a drill rod bit connector (6), the drill rod bit connector (6) comprising:

a connecting frame (6-2);

the single connectors (6-1) are formed at the bottom of the connecting frame (6-2), and the single connectors (6-1) are used for connecting the single drill bit (4);

the total connector (6-3) is formed at the center of the top of the connecting frame (6-2), and the total connector (6-3) is connected with the drill rod (5);

wherein, the bottom of the monomer connector (6-1) is provided with a connector liquid inlet cavity (6-1-1) and a connector slurry outlet cavity (6-1-2); the connecting frame (6-2) is a cross-shaped connecting frame for connecting the four single drill bits (4) to form a rectangular drill bit assembly; or the connecting frame (6-2) is a cross-shaped and square-shaped connecting frame with coaxial nested shapes so as to connect eight single drill bits to form a rectangular drill bit assembly.

7. Rectangular pile drilling apparatus according to claim 6, characterized in that the inner drill bits (4-7) comprise:

a conical rotary drill bit (4-7-4) and a rotary digging power rod (4-7-2) are arranged from bottom to top;

the center rotary drilling bit (4-7-1) is connected with the rotary drilling power rod (4-7-2);

the rotary drilling power rod slurry outlet hole (4-7-3) is arranged at a position where the rotary drilling power rod (4-7-2) is positioned between the conical rotary drill bit (4-7-4) and the central rotary drill bit (4-7-1);

the rotary digging power rod (4-7-2) is provided with a rotary digging power rod slurry outlet cavity (4-7-5) along the length direction, and the rotary digging power rod slurry outlet hole (4-7-3) is communicated with the rotary digging power rod slurry outlet cavity (4-7-5).

8. Rectangular pile drilling machine equipment according to claim 7, characterized in that the single connector (6-1), the connecting frame (6-2) and the total connector (6-3) are internally provided with a drill rod drill bit connector pulp outlet cavity (6-5) and a drill rod drill bit connector liquid inlet cavity (6-4);

each section of drill rod (5) is provided with a drill rod liquid inlet cavity (5-1) and a drill rod slurry outlet cavity (5-2) along the length direction; wherein:

the drill rod liquid inlet cavity (5-1), the drill rod drill bit connecting piece liquid inlet cavity (6-4), the connector liquid inlet cavity (6-1-1) and the top surface exposed end liquid inlet cavity (4-6-1) are communicated with the high-pressure liquid gun cutting drill bit (4-5-4) so as to provide stirring liquid for the high-pressure liquid gun cutting drill bit (4-5-4);

the rotary digging power rod slurry outlet hole (4-7-3), the rotary digging power rod slurry outlet cavity (4-7-5), the top surface slurry outlet cavity (4-6-2), the connector slurry outlet cavity (6-1-2), the drill rod drill bit connecting piece slurry outlet cavity (6-5) and the drill rod slurry outlet cavity (5-2) are communicated.

9. Rectangular pile drilling apparatus according to claim 7, further comprising a main frame (1) comprising:

k power setting frames (1-3) which are arranged in a scattered way, wherein K is more than or equal to 3;

the top end of each power installation frame is detachably connected with two connecting beams (1-1);

the K cross beam telescopic sections (1-2), two connecting cross beams of two adjacent power setting frames (1-3) are connected through the cross beam telescopic sections (1-2), so that the lengths of the two connecting cross beams (1-1) can be adjusted.

10. Rectangular pile drilling apparatus according to claim 9, further comprising a drilling power section (2), the drilling power section (2) comprising:

the K hydraulic power telescopic cylinders (2-1) are respectively fixed at the lower parts of the K power placing frames (1-3), and the piston rods of the hydraulic power telescopic cylinders face upwards;

the K connecting steel plates (2-2) are respectively fixed at the top ends of piston rods of the K hydraulic power telescopic cylinders (2-1);

the device comprises K azimuth induction adjustment power arms (3), wherein one ends of the K azimuth induction adjustment power arms (3) are respectively connected to K connecting steel plates (2-2), the other ends of the K azimuth induction adjustment power arms are respectively detachably connected with a drill rod (5), and the lengths of the K azimuth induction adjustment power arms (3) in the transverse direction can be adjusted.

11. Rectangular pile drilling apparatus according to claim 10, characterized in that the azimuth-induction-adjusting power arm (3) comprises:

a telescopic arm (3-1) which can be telescopic;

and one end of the telescopic arm (3-1) is fixed with the connecting steel plate (2-2) and the other end of the telescopic arm is fixed with the drill rod clamping head (3-3), and the drill rod clamping head (3-3) is detachably connected with the drill rod (5).

12. Rectangular pile drilling apparatus according to claim 11, characterized in that the azimuth-induction-adjusting power arm (3) further comprises:

the two-dimensional adjusting plate (3-2) is arranged on the plane, the drill rod clamping head (3-3) is connected to the end part of the telescopic arm (3-1) through the two-dimensional adjusting plate (3-2) so as to rotate and adjust the drill rod clamping head (3-3) in the vertical direction; wherein the plane two-dimensional adjusting disc (3-2) is also used for sensing the azimuth of the drill rod clamping head (3-3);

the rectangular pile drilling machine equipment also comprises K controllers (7) which are respectively fixed at the K connecting steel plates (2-2);

the controller (7) is respectively in communication connection with the hydraulic power telescopic cylinder (2-1), the telescopic arm (3-1) and the plane two-dimensional adjusting disc (3-2) which are arranged on the same power setting frame (1-3), and the controller (7) is used for controlling the hydraulic power telescopic cylinder (2-1), the telescopic arm (3-1) and the plane two-dimensional adjusting disc (3-2) which are arranged on the same power setting frame (1-3) according to the azimuth information of the induction drill rod clamping head (3-3) so as to keep the perpendicularity of the drill rod clamping head (3-3) within a perpendicularity preset range.

13. Rectangular pile drilling machine equipment according to claim 12, characterized in that the single bit (4) further comprises rectangular cutting power devices (4-5-3) corresponding to the rectangular boundary cutters (4-5-2) one by one, and the controller (7) is respectively in communication connection with the rectangular cutting power devices (4-5-3) and the central rotary drilling bit (4-7-1) and the rotary drilling power rod (4-7-2) which are arranged on the same power setting frame (1-3);

the controller (7) is used for controlling the rectangular cutting power device (4-5-3) to provide vertical cutting force for the rectangular boundary cutter (4-5-2) and controlling the rotary digging power rod (4-7-2) to provide rotary digging power for the central rotary digging drill (4-7-1).

14. Rectangular pile drilling apparatus according to claim 13, characterized in that the controller (7) is further adapted to:

when encountering abrupt soil or special formations of boulders, the absolute value of the difference value between the current rotating speed n2 of the central rotary drilling rig (4-7-1) and the stable rotating speed n1 of the central rotary drilling rig (4-7-1) exceeds the preset rotating speed difference value range before the change, and the drilling progress in the vertical direction of the drilling power part (2) needs to be changed by adjusting the power of the hydraulic power telescopic oil cylinder (2-1) in time; the power of the rotary digging power rod (4-7-2) is adjusted to change the rotating speed of the central rotary digging drill (4-7-1); the cutting force of the rectangular boundary cutter (4-5-2) is changed by adjusting the power of the rectangular cutting power device (4-5-3).

15. Rectangular pile drilling apparatus according to claim 14, characterized in that the controller (7) is further adapted to:

when a soil layer suddenly changes or a special boulder stratum is encountered, the absolute value of the difference value of the vertical propulsion process s2 of the rectangular boundary cutter (4-5-2) and the stable propulsion process s1 before the rectangular boundary cutter (4-5-2) is changed exceeds the range of a process difference preset value, and the drilling progress of the vertical direction of the drilling power part (2) needs to be changed in time by adjusting the power of the hydraulic power telescopic cylinder (2-1); the power of the rotary digging power rod (4-7-2) is adjusted to change the rotating speed of the central rotary digging drill (4-7-1); the cutting force of the rectangular boundary cutter (4-5-2) is changed by adjusting the power of the rectangular cutting power device (4-5-3).