CN112031647A - Reverse circulation drilling machine for hard rock layer long and large pile foundation and construction method thereof - Google Patents
Reverse circulation drilling machine for hard rock layer long and large pile foundation and construction method thereof Download PDFInfo
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- CN112031647A CN112031647A CN202010825081.4A CN202010825081A CN112031647A CN 112031647 A CN112031647 A CN 112031647A CN 202010825081 A CN202010825081 A CN 202010825081A CN 112031647 A CN112031647 A CN 112031647A
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- 238000005553 drilling Methods 0.000 title claims abstract description 150
- 238000010276 construction Methods 0.000 title claims abstract description 54
- 239000011435 rock Substances 0.000 title claims abstract description 22
- 239000002002 slurry Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 13
- 238000013461 design Methods 0.000 claims description 6
- 229910003460 diamond Inorganic materials 0.000 claims description 6
- 239000010432 diamond Substances 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- -1 gravel Substances 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/04—Supports for the drilling machine, e.g. derricks or masts specially adapted for directional drilling, e.g. slant hole rigs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
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- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a reverse circulation drilling machine for a long and large pile foundation of a hard rock layer and a construction method thereof. The reverse circulation drilling machine comprises a machine body, a walking component, a supporting component, a drilling component and a slurry circulation component, wherein the walking component is arranged at the bottom of the machine body and is used for driving the machine body to move; the supporting component can be supported between the machine body and the construction ground; the drilling assembly is arranged on one side of the machine body along the longitudinal direction of the machine body; the mud circulation assembly is arranged on the machine body and is positioned above the drilling assembly; the drilling assembly comprises a power unit, a drill rod connected to the lower end of the power unit and a drill bit arranged at the lower end of the drill rod, the power unit comprises a hydraulic assembly and four motors, the motors are arranged on motor trays of the machine body, the hydraulic assembly is arranged between the bottom of the machine body and the motor trays, and the hydraulic assembly is used for driving the motor trays to move up and down. The reverse circulation drilling machine has high drilling efficiency.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a reverse circulation drilling machine for a long and large pile foundation of a hard rock layer and a construction method thereof.
Background
In recent years, with the rapid development of high-speed railway construction, the span of a bridge is continuously increased, so that the requirement of the superstructure of the bridge on the bearing capacity of a foundation is higher and higher, and the conventional pile foundation cannot meet the requirements of construction period, quality, environmental protection and the like, so that in the field of bridge construction, under many conditions, large-diameter deep-drilled cast-in-place piles are adopted in the foundation construction of the bridge. Compared with the common cast-in-situ bored pile, the large-diameter deep-bored pile has the characteristics of high construction difficulty, high risk, long construction time, high technical content and the like, the construction quality of the large-diameter deep-bored pile is well controlled, the construction is smoothly completed according to a construction plan, and the method is a difficult problem in construction, and the method solves the problems and is closely related to the structural design of a drilling machine.
The existing reverse circulation drilling machine generally comprises a chassis, a single-row support, a power system, a drilling system and a traveling system, wherein one end of the chassis is connected with the single-row support, a power unit is arranged on the single-row support, the power unit comprises two motors, the drilling system is driven by the power system to drill after the drilling machine is in place, and slurry formed in the drilling process is discharged to a slurry tank through a slurry pump.
Therefore, the conventional reverse circulation drilling machine has low output power, so that the torque cannot meet the drilling requirement, and the difficult problem in construction is difficult to solve.
Disclosure of Invention
The invention provides a reverse circulation drilling machine for a long and large pile foundation of a hard rock layer, which has higher drilling efficiency.
The invention provides a reverse circulation drilling machine for a long and large pile foundation of a hard rock layer, which comprises a machine body, a walking component, a supporting component, a drilling component and a slurry circulation component, wherein the walking component is arranged at the bottom of the machine body and used for driving the machine body to advance; the supporting component can be supported between the machine body and the construction ground; the drilling assembly is arranged on one side of the machine body along the longitudinal direction of the machine body; the mud circulation assembly is arranged on the machine body and is positioned above the drilling assembly;
the drilling assembly comprises a power unit, a drill rod connected to the lower end of the power unit and a drill bit arranged at the lower end of the drill rod, the power unit comprises a hydraulic assembly and four motors, the motors are arranged on motor trays of the machine body, the hydraulic assembly is arranged between the bottom of the machine body and the motor trays, and the hydraulic assembly is used for driving the motor trays to move up and down.
As an alternative embodiment, the drill rod has a hollow cavity and the wall thickness of the drill rod is 3 cm.
As an alternative embodiment, the drill bit is a four wing drill bit.
As an alternative embodiment, the drill bit is detachably connected to the bottom end of the drill rod.
As an optional embodiment, the body comprises a body and a bracket, the bracket is arranged on one side of the body along the longitudinal direction of the body, and the hydraulic assembly is arranged between the bottom of the bracket and the motor tray;
the support includes fixed connection's first support and second support, and the direction of arranging of first support and second support is unanimous with the vertical of fuselage, and the motor tray sets up between first support and second support, and motor tray and first support and second support sliding fit.
As an optional implementation manner, the reverse circulation drilling machine for the hard rock layer long and large pile foundation provided by the invention further comprises a hydraulic adjusting assembly, the hydraulic adjusting assembly is arranged between the machine body and any one of the first support and the second support, and the hydraulic adjusting assembly is used for adjusting an included angle between the support and the machine body.
As an alternative embodiment, the support assembly includes a plurality of first support legs and a plurality of second support legs, the plurality of first support legs can be supported between the construction ground and the body of the body, a part of the plurality of second support legs can be supported between the construction ground and the first support, and another part of the plurality of second support legs can be supported between the construction ground and the second support.
As an alternative embodiment, the walking assembly comprises a crawler belt which is rotatably connected to the bottom of the machine body through a rotating pin shaft.
The reverse circulation drilling machine for the hard rock layer long and large pile foundation further comprises an operation chamber, wherein the operation chamber is arranged on the machine body, a drilling operation assembly is arranged in the operation chamber and is electrically connected with the hydraulic assembly, and the drilling operation assembly is used for controlling the hydraulic assembly to enable the drill rod to drill or drill.
As an optional implementation manner, the reverse circulation drilling machine for the hard rock layer long and large pile foundation provided by the invention further comprises a power supply assembly, the power supply assembly is arranged on the machine body, the power supply assembly and the operation chamber are respectively located on two sides of the machine body along the transverse direction of the machine body, and the power supply assembly is used for supplying power to the motor.
The invention provides a reverse circulation drilling machine for a hard rock stratum long and large pile foundation, which comprises a machine body, a walking component, a supporting component, a drilling component and a slurry circulation component, wherein the walking component is arranged at the bottom of the machine body and is used for driving the machine body to advance; the supporting component can be supported between the machine body and the construction ground; the drilling assembly is arranged on one side of the machine body along the longitudinal direction of the machine body; the mud circulation assembly is arranged on the machine body and is positioned above the drilling assembly; the drilling assembly comprises a power unit, a drill rod connected to the lower end of the power unit and a drill bit arranged at the lower end of the drill rod, the power unit comprises a hydraulic assembly and four motors, the motors are arranged on motor trays of the machine body, the hydraulic assembly is arranged between the machine body and the motor trays, and the hydraulic assembly is used for driving the motor trays to move up and down. Because the power unit comprises the four motors in the reverse circulation drilling machine provided by the invention, the output power of the reverse circulation drilling machine provided by the embodiment can be increased, so that the drill bit can continuously and effectively cut hard rock soil under the action of a high-power large-torque large-mass drill rod, and the drilling efficiency is improved.
The construction of the present invention and other objects and advantages thereof will be more apparent from the following description of the preferred embodiments taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are 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 reverse circulation drilling rig according to an embodiment of the present invention;
FIG. 2 is a front view of a reverse circulation drilling rig provided in accordance with an embodiment of the present invention;
FIG. 3 is a top view of a reverse circulation drilling rig provided in accordance with an embodiment of the present invention;
FIG. 4 is a right side view of a reverse circulation drilling rig provided in accordance with an embodiment of the present invention;
description of reference numerals:
a body 1; a motor tray 11; a body 12; a bracket 13; a first bracket 131; a second bracket 132; a cross member 14; a walking component 2; a support assembly 3; a first support leg 31; a second support leg 32; a drilling assembly 4; a power unit 41; a hydraulic assembly 411; a motor 412; a drill rod 42; a drill 43; a slurry circulation assembly 5; a slurry pump 51; a slurry discharge pipe 52; a hydraulic adjustment assembly 6; an operation chamber 7; a power supply assembly 8; a backup generator 81; a distribution box 82.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be considered as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It should be noted that the terms "first" and "second" in the description of the present invention are used merely for convenience in describing different components, and are not to be construed as indicating or implying a sequential relationship, relative importance, or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
In recent years, with the rapid development of high-speed railway construction, the span of a bridge is continuously increased, so that the requirement of the superstructure of the bridge on the bearing capacity of a foundation is higher and higher, and the conventional pile foundation cannot meet the requirements of construction period, quality, environmental protection and the like, so that in the field of bridge construction, under many conditions, large-diameter deep-drilled cast-in-place piles are adopted in the foundation construction of the bridge. Compared with the common cast-in-situ bored pile, the large-diameter deep-bored pile has the characteristics of high construction difficulty, high risk, long construction time, high technical content and the like, the construction quality of the large-diameter deep-bored pile is well controlled, the construction is smoothly completed according to a construction plan, and the method is a difficult problem in construction, and the method solves the problems and is closely related to the structural design of a drilling machine.
The existing reverse circulation drilling machine generally comprises a chassis, a single-row bracket, a power system, a drilling system and a traveling system, wherein one end of the chassis is connected with the single-row bracket, a power unit and a slurry pump are arranged on the single-row bracket, the power unit comprises two motors, a drill rod with the wall thickness of 2cm is arranged below the power unit, and two wing drill bits are arranged at the bottom end of the drill rod; a traveling device consisting of a front axle, a rear axle, a steering mechanism and a braking mechanism is arranged below the chassis, a diesel engine, a generator and a power transmission device are arranged on the chassis, the diesel engine is respectively connected with the generator and the power transmission device, and the traveling device is connected with the power transmission device, wherein the traveling system is connected with an intermediate shaft through a transmission shaft of the diesel engine, and the intermediate shaft is respectively provided with a group friction clutch, a group jaw clutch and a belt wheel matched with the jaw clutch; the friction clutch is connected with the power transmission device, the belt wheel is connected with the generator, and the drilling machine is moved to the designed pile position under the action of the components. After the drilling machine is in place, the drilling system is driven by the power system to drill, and slurry formed in the drilling process is discharged to the slurry tank through a slurry pump.
Therefore, the existing reverse circulation drilling machine has the following defects:
the power unit comprises two motors, and the output power and the torque of the drilling machine are low, so that the drilling power of the drilling machine is low, and the drilling requirement of a construction site on the drilling machine cannot be met;
secondly, the wall thickness of a drill rod arranged below the power unit is only 2cm, the self weight of the drill rod is small, the strength is low, and the requirement of a construction site on drilling pressure cannot be met;
thirdly, the drill bits arranged at the bottom end of the drill rod are two-wing drill bits, so that the long and large pile foundation cannot be rapidly drilled in the hard rock stratum;
and fourthly, a single-row bracket is arranged on the chassis, so that the stability of the drilling machine in the working process cannot be ensured.
The invention thus provides a reverse circulation drilling rig which overcomes the above-mentioned disadvantages.
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic perspective view of a reverse circulation drilling machine according to an embodiment of the present invention. FIG. 2 is a front view of a reverse circulation drilling rig provided in an embodiment of the present invention. Fig. 3 is a top view of a reverse circulation drilling rig provided by an embodiment of the present invention. Fig. 4 is a right side view of a reverse circulation drilling rig provided in an embodiment of the present invention.
As shown in fig. 1 to 4, the embodiment of the invention provides a reverse circulation drilling machine for hard rock layer long and large pile foundations, which comprises a machine body 1, a walking assembly 2, a supporting assembly 3, a drilling assembly 4 and a mud circulation assembly 5. The walking component 2 is arranged at the bottom of the machine body 1, and the walking component 2 is used for driving the machine body 1 to move forwards; the supporting component 3 can be supported between the machine body 1 and the construction ground; the drilling assembly 4 is arranged on one side of the fuselage 1 in the longitudinal direction (y direction in fig. 3) of the fuselage 1; the slurry circulation assembly 5 is arranged on the machine body, and the slurry circulation assembly 5 is positioned above the drilling assembly 4; the drilling assembly 4 comprises a power unit 41, a drill rod 42 connected to the lower end of the power unit 41, and a drill bit 43 arranged at the lower end of the drill rod 42, wherein the power unit 41 comprises a hydraulic assembly 411 and four motors 412, the motors 412 are arranged on the motor tray 11 of the body 1, the hydraulic assembly 411 is arranged between the bottom of the body 1 and the motor tray 11, and the hydraulic assembly 411 is used for driving the motor tray 11 to move up and down.
In this embodiment, a drill bit 43 is threaded into the lower end of the drill rod 42.
In the reverse circulation drilling machine provided by this embodiment, the drilling assembly 4 includes a power unit 41, a drill rod 42 connected to the lower end of the power unit 41, and a drill bit 43 disposed at the lower end of the drill rod 42, and the power unit 41 includes a hydraulic assembly 411 and four motors 412, so as to improve the effective output power and torque of the reverse circulation drilling machine provided by this embodiment, further increase the drilling power of the reverse circulation drilling machine provided by this embodiment, and improve the drilling effect of the reverse circulation drilling machine provided by this embodiment.
Optionally, the power of the motor 412 is 22 kW.
In a specific embodiment of the present embodiment, the motor 412 is connected to the motor tray 11 by a threaded connection, so as to facilitate installation of the reverse circulation drilling machine provided in the present embodiment.
It should be noted that in the reverse circulation drilling machine provided in the present embodiment, the mud circulation assembly 5 includes a mud pump 51 provided on the motor tray 11 and a mud discharge pipe 52 connected to the mud pump 51.
In a specific embodiment of this embodiment, the slurry discharge pipe 52 is connected to the slurry pump 51 by a screw connection.
In some embodiments, hydraulic assembly 411 is a hydraulic ram.
Specifically, when needs are crept into the work, at first, make walking subassembly 2 drive fuselage 1 and advance to the construction position, then make fuselage 1 support on the construction ground through supporting component 3, later, start power unit 41, make hydraulic component 411 order about motor tray 11 and remove to suitable position, then make motor 412 work, drive drilling rod 42 and rotate, and then drive drill bit 43 and rotate to creep into the work. The mud pump 51 is used for lifting rock and soil and mud mixture together, discharging the mixture out of the hole through the drill rod 42 and the mud discharge pipe 52, temporarily storing the mixture in the mud pit for treatment, and allowing the mud to flow into the manhole for circulation after soil, sand, gravel, rock debris and the like are precipitated in the mud pit.
In order to reduce the self weight of the drill rod 42 and increase the strength of the drill rod 42, the drilling force of the reverse circulation drilling machine provided by the embodiment is improved, in the embodiment, the drill rod 42 is provided with a hollow cavity, and the wall thickness of the drill rod 42 ranges from 2.5cm to 3 cm.
In a particular embodiment of this embodiment, the drill rod 42 has a wall thickness of 3 cm.
Thus, compared with the drill rod of the conventional reverse circulation drilling machine, the wall thickness of the drill rod 42 in the embodiment is increased, so that the drilling force of the reverse circulation drilling machine provided by the embodiment can be increased, and the drilling effect of the reverse circulation drilling machine provided by the embodiment is improved.
In some embodiments, the outer diameter of the drill rod 42 ranges from 21.9cm to 35.1cm, and the length of the drill rod 42 ranges from 2m to 3 m.
In a particular embodiment of this embodiment, the drill rod 42 has an outer diameter of 35.1cm and the drill rod 42 has a length of 2 m.
In order to improve the drilling efficiency of the reverse circulation drilling machine provided by the present embodiment, in the present embodiment, the drill 43 is a four-wing drill.
Specifically, the diameter of the drill 43 is selected according to the design aperture size, and a four-wing diamond insert is used. Specifically, each wing portion of the drill 43 is provided with a plurality of diamond blades 44 arranged at intervals from top to bottom. In some embodiments, each diamond blade 44 has the same length, and the diamond blades 44 extend in a direction parallel to the direction of movement of the drill bit 43.
Like this, increased the quantity of blade and improved the material of blade for under powerful drive, make the drill bit effectively cut the rock stratum, improve drilling efficiency.
To facilitate installation of the drill bit 43, in this embodiment, the drill bit 43 is removably attached to the bottom end of the drill rod 42.
In order to improve the stability of the reverse circulation drilling machine provided by the present embodiment, in the present embodiment, the machine body 1 includes a machine body 12 and a bracket 13, the bracket 13 is disposed on one side of the machine body 12 in the longitudinal direction (y direction in fig. 3) of the machine body 12, and the hydraulic assembly 411 is disposed between the bottom of the bracket 13 and the motor tray 11; the bracket 13 includes a first bracket 131 and a second bracket 132 that are fixedly connected, and the arrangement direction of the first bracket 131 and the second bracket 132 is the same as the longitudinal direction of the body 1 (y direction in fig. 3), the motor tray 11 is disposed between the first bracket 131 and the second bracket 132, and the motor tray 11 is in sliding fit with the first bracket 131 and the second bracket 132.
Specifically, first support 131 and second support 132 are door type frame, and the roof of door type frame is located the bottommost, connect through a plurality of crossbeams 14 that are parallel to each other between the curb plate of two door type frames, and hydraulic assembly 411 sets up between the crossbeam 14 of bottommost and motor tray 11, is equipped with rectangular frame 15 on the top of two door type frames, and rectangular frame 15 is used for connecting the top of the curb plate of two door type frames.
Thus, the double-row support formed by combining the first support 131 and the second support 132 reduces the influence of the shaking of the support 13 on the hole position verticality in the drilling process, and increases the working stability of the reverse circulation drilling machine provided by the embodiment.
In a specific embodiment of this embodiment, the first bracket 131 has a height of 8m and a width of 3.4 m (an extended length of the top plate of the gate frame), and the distance between the first bracket 131 and the second bracket 132 is 50 cm.
In order to facilitate the up and down movement of the motor tray 11 under the action of the hydraulic assembly 411, in some embodiments, the side plates of the two door-shaped frames have sliding grooves, and the ends of the motor tray 11 are in sliding fit with the corresponding sliding grooves.
Thus, by adopting the portal frame with the sliding grooves, the drilling assembly 4 can be guided, and the inclination of the hole position can be ensured within an allowable error range when the drill rod 42 is replaced in the drilling process.
In order to further enhance the strength of the fuselage 1, the first bracket 131 and the second bracket 132 are connected to the cross beam 14 by welding. Therefore, the strength of the bracket 13 can be ensured, and the stability of the reverse circulation drilling machine provided by the embodiment in working is improved.
In order to facilitate the drilling work of the reverse circulation drilling machine provided by the embodiment, the reverse circulation drilling machine further comprises a hydraulic adjusting assembly 6, the hydraulic adjusting assembly 6 is arranged between the machine body 12 and any one of the first support 131 and the second support 132, and the hydraulic adjusting assembly 6 is used for adjusting an included angle between the support 13 and the machine body 12.
It should be noted that, the hydraulic adjusting assembly 6 herein may adopt a hydraulic cylinder, an extension rod of the hydraulic cylinder is connected to any one of the first bracket 131 and the second bracket 132, the hydraulic adjusting assembly 6 may also adopt other hydraulic mechanisms, and the specific structure of the hydraulic adjusting assembly 6 is not limited herein.
In a specific embodiment of the present embodiment, the hydraulic pressure adjusting assembly 6 is disposed between the first bracket 131 and the body 12, and the bottom of the first bracket 131 is hinged to the body 12, and the middle of the first bracket 131 is hinged to the hydraulic pressure adjusting assembly 6.
Specifically, when the traveling assembly 2 drives the reverse circulation drilling machine provided by the embodiment to move to the drilling position, firstly, the hydraulic adjusting assembly 6 adjusts the angle between the support 13 and the machine body 12, after the support 13 rotates to a proper position, the motor 412 and the hydraulic assembly 411 are simultaneously started, and in the moving process of the motor tray 11, the motor 412 drives the drill rod 42 and the drill bit 43 to rotate to perform the drilling action.
In order to improve the stability of the reverse circulation drilling machine provided by the present embodiment during drilling, the support assembly 3 includes a plurality of first support legs 31 and a plurality of second support legs 32, the plurality of first support legs 31 can be supported between the construction ground and the body 12, a portion of the plurality of second support legs 32 can be supported between the construction ground and the first bracket 131, and another portion of the plurality of second support legs 32 can be supported between the construction ground and the second bracket 132.
In this way, the first support leg 31 and the second support leg 32 can be supported between the body 12 and the ground, and the stability of the reverse circulation drilling machine provided by the embodiment in the drilling process is improved.
The first support leg 31 is extendable and retractable with respect to the body 12, and the second support leg 32 is extendable and retractable with respect to the first bracket 131 and the second bracket 132.
Specifically, when the reverse circulation drilling machine provided by the embodiment is in a traveling process, the first support leg 31 is retracted into the machine body 12, and the second support leg 32 is retracted into the first bracket 131 and the second bracket 132; when the reverse circulation drill provided in this embodiment is moved to the construction position, the first support leg 31 extends out of the body 12, and the second support leg 32 extends out of the first bracket 131 and the second bracket 132.
In this way, it can be ensured that the smoothness of the reverse circulation drilling machine provided by the present embodiment during the traveling process can also ensure that the first support leg 31 effectively supports the machine body 12, and the second support leg 32 effectively supports the first bracket 131 and the second bracket 132.
The structure for driving the first support leg 31 and the second support leg 32 to extend and contract may be a hydraulic structure or an electric structure, and the structure for driving the first support leg 31 and the second support leg 32 to extend and contract is not particularly limited.
In a specific embodiment of this embodiment, the running assembly 2 comprises a crawler belt rotatably connected to the bottom of the fuselage by a rotating pin.
Through adopting the track, adaptation unevenness's ground that can be better promotes the stability of fuselage 1 in the motion process.
In the reverse circulation drilling machine provided by the embodiment, the reverse circulation drilling machine further comprises an operation chamber 7, the operation chamber 7 is arranged on the machine body 1, a drilling operation assembly is arranged in the operation chamber 7, the drilling operation assembly is electrically connected with the hydraulic component, and the drilling operation assembly is used for controlling the hydraulic component to enable the drill rod to drill or drill.
Specifically, a drill forward rotation operating rod, a drill reverse rotation operating rod, a winch descending and lifting operating rod and a slurry pump operating rod are arranged in the operating room 7, and the drill operating room can accommodate a person to sit on a disk to perform drilling operation.
The reverse circulation drilling machine further comprises a power supply assembly 8, the power supply assembly 8 is arranged on the machine body 12, the power supply assembly 8 and the operation chamber 7 are respectively located on two sides of the machine body 12 in the transverse direction (x direction in fig. 3) of the machine body, and the power supply assembly 8 is used for supplying power to the motor.
In a specific implementation manner of this embodiment, the power supply assembly 8 includes a standby generator 81 and a distribution box 82, when an external power source cannot be used, the standby generator 81 supplies power, which effectively reduces the construction suspension condition caused by the power source being unable to supply power, the distribution box 82 is connected to a drilling machine frequency converter system, the frequency converter is connected to each generator, one power supply assembly 8 is adopted for 4 motors 412, and 4 motors 412 work simultaneously during construction.
In a specific embodiment of this embodiment, the backup generator is 150 kw.
In this embodiment, the standby generator 81 is connected to one end of the machine body 1 in a welding mode, so that power is provided for equipment during transfer between pier operation surfaces, the standby generator 81 starts to be used when other generators break down, the standby generator can be used for a drilling machine hydraulic system, drill lifting and short-time drilling construction, and the standby generator 81 can be temporarily used when any other motor 412 breaks down.
The reverse circulation drilling machine comprises a machine body, a walking assembly, a supporting assembly, a drilling assembly and a slurry circulation assembly, wherein the walking assembly is arranged at the bottom of the machine body and is used for driving the machine body to advance; the supporting component can be supported between the machine body and the construction ground; the drilling assembly is arranged on one side of the fuselage along the longitudinal direction (y direction in fig. 3) of the fuselage; the mud circulation assembly is arranged on the machine body and is positioned above the drilling assembly; the drilling assembly comprises a power unit, a drill rod connected to the lower end of the power unit and a drill bit arranged at the lower end of the drill rod, the power unit comprises a hydraulic assembly and four motors, the motors are arranged on motor trays of the machine body, the hydraulic assembly is arranged between the machine body and the motor trays, and the hydraulic assembly is used for driving the motor trays to move up and down. Because the power unit comprises the four motors in the reverse circulation drilling machine provided by the invention, the output power of the reverse circulation drilling machine provided by the embodiment can be increased, so that the drill bit can continuously and effectively cut hard rock soil under the action of a high-power large-torque large-mass drill rod, and the drilling efficiency is improved.
The embodiment also provides a construction method of the reverse circulation drilling machine.
The construction method of the reverse circulation drilling machine provided by the embodiment specifically comprises the following steps:
s101: and starting the reverse circulation drilling machine, remotely controlling the walking assembly 2, and moving the drilling machine to a working place.
Therefore, the reverse circulation drilling machine can move to a construction position to perform drilling work.
S102: controlling a support assembly to enable the reverse circulation drilling machine to be firmly and stably arranged on the original ground; in this embodiment, the structure for controlling the first support leg 31 and the second support leg 32 to extend and retract drives the first support leg 31 to extend out of the body 1 and the second support leg 32 to extend out of the bracket 13.
In this way, the first support leg 31 is supported between the body 1 and the construction ground, the second support leg 32 is supported between the support 13 and the bottom surface, the reverse circulation drilling machine provided by the embodiment is stably erected, and the drilling system is vertically designed into a pile position.
S103: and starting the hydraulic adjusting assembly 6 to enable the drill bit, the drill rod and the design pile to be positioned on the same straight line.
In this way, the angle between the bracket 13 and the body 12 can be adjusted by activating the hydraulic adjustment assembly 6 so that the bracket 13 corresponds to the appropriate drilling angle.
S104: the four motors 412 are activated to rotate the drill rod 42 and the drill bit 43.
In this way, in the process that the hydraulic assembly 411 drives the motor tray 11 to move, the motor 412 drives the drill rod 42 and the drill bit 43 to rotate, and drilling operation is achieved.
S105: in the drilling process, the hydraulic assembly 411 is used for driving the motor tray 11 to move up and down so as to adjust the height of the drill bit 43 and ensure the verticality of the up-and-down movement of the motor tray 11;
s106: the drill bit 43 continuously cuts the hard rock to form small rocks and the small rocks, mud, are discharged through the drill pipe 42 and the mud circulation assembly 5.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The reverse circulation drilling machine for the long and large pile foundation of the hard rock layer is characterized by comprising a machine body, a walking assembly, a supporting assembly, a drilling assembly and a slurry circulation assembly, wherein the walking assembly is arranged at the bottom of the machine body and is used for driving the machine body to advance; the supporting component can be supported between the machine body and the construction ground; the drilling assembly is arranged on one side of the machine body along the longitudinal direction of the machine body; the mud circulation assembly is arranged on the machine body and is positioned above the drilling assembly;
the drilling assembly comprises a power unit, a drill rod connected to the lower end of the power unit and a drill bit arranged at the lower end of the drill rod, the power unit comprises a hydraulic assembly and four motors, the motors are arranged on motor trays of the machine body, the hydraulic assembly is arranged between the bottom of the machine body and the motor trays, and the hydraulic assembly is used for driving the motor trays to move up and down.
2. The reverse circulation drilling machine according to claim 1, wherein the drill rod has a hollow cavity, and the wall thickness of the drill rod is 2.5-3 cm.
3. The reverse circulation drill of claim 2, wherein the drill bit is a quad-wing drill bit.
4. The reverse circulation drilling machine according to claim 3, wherein each wing portion of the drill bit is provided with a plurality of diamond blades spaced from top to bottom.
5. The reverse circulation drill of claim 4, wherein each diamond blade is the same length and extends in a direction parallel to the direction of movement of the drill bit.
6. The reverse circulation drilling machine according to any one of claims 1 to 5, wherein the body includes a body and a bracket provided on one side of the body in a longitudinal direction of the body, the hydraulic assembly being provided between a bottom of the bracket and the motor tray;
the support includes fixed connection's first support and second support, just first support with the direction of arranging of second support with the vertical unanimity of fuselage, the motor tray set up in first support with between the second support, just the motor tray with first support with second support sliding fit.
7. The reverse circulation drilling machine according to claim 6, further comprising a hydraulic adjustment assembly disposed between the body and any one of the first and second supports, the hydraulic adjustment assembly being configured to adjust an included angle between the support and the body.
8. The reverse circulation drill of claim 6, wherein the support assembly includes a plurality of first support legs supportable between the construction ground and the fuselage body and a plurality of second support legs, a portion of which are supportable between the construction ground and the first support and another portion of which are supportable between the construction ground and the second support.
9. The method of claim 1, comprising the steps of:
s101: starting the reverse circulation drilling machine, remotely controlling the walking assembly, and moving the drilling machine to a working place;
s102: controlling a support assembly to enable the reverse circulation drilling machine to be firmly and stably arranged on the original ground;
s103: enabling the drill bit, the drill rod and the design pile to be positioned on the same straight line;
s104: starting the four motors to drive the drill rod and the drill bit to rotate;
s105: in the drilling process, the hydraulic component is used for driving the motor tray to move up and down so as to adjust the height of the drill bit and ensure the verticality of the up-and-down movement of the motor tray;
s106: the drill bit continuously cuts the hard rock to form small stones, and the small stones and the slurry are discharged through the drill rod and the slurry circulating assembly.
10. The construction method according to claim 9, wherein in step S103, the included angle between the support and the body is adjusted by a hydraulic adjusting assembly, so that the drill bit, the drill rod and the design pile are located on the same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010825081.4A CN112031647A (en) | 2020-08-17 | 2020-08-17 | Reverse circulation drilling machine for hard rock layer long and large pile foundation and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010825081.4A CN112031647A (en) | 2020-08-17 | 2020-08-17 | Reverse circulation drilling machine for hard rock layer long and large pile foundation and construction method thereof |
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| CN112031647A true CN112031647A (en) | 2020-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010825081.4A Pending CN112031647A (en) | 2020-08-17 | 2020-08-17 | Reverse circulation drilling machine for hard rock layer long and large pile foundation and construction method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112627722A (en) * | 2021-01-15 | 2021-04-09 | 上海康筘实业有限公司 | Drilling and punching equipment for piling in building construction |
| CN113090182A (en) * | 2021-03-26 | 2021-07-09 | 中铁工程机械研究设计院有限公司 | Rock drilling device and rock entering equipment |
| CN113445940A (en) * | 2021-06-29 | 2021-09-28 | 山西天地王坡煤业有限公司 | Adjustable carrier roller device of drill rod loading platform and drill rod loading platform |
| CN113638706A (en) * | 2021-07-22 | 2021-11-12 | 深圳市工勘岩土集团有限公司 | Pile-forming construction equipment for large-diameter rock-socketed cast-in-place pile with super-thick covering layer |
| CN115387727A (en) * | 2022-10-25 | 2022-11-25 | 山东飞鸿建设集团有限公司 | Supporting device for soil layer drilling machine |
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2020
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112627722A (en) * | 2021-01-15 | 2021-04-09 | 上海康筘实业有限公司 | Drilling and punching equipment for piling in building construction |
| CN113090182A (en) * | 2021-03-26 | 2021-07-09 | 中铁工程机械研究设计院有限公司 | Rock drilling device and rock entering equipment |
| CN113445940A (en) * | 2021-06-29 | 2021-09-28 | 山西天地王坡煤业有限公司 | Adjustable carrier roller device of drill rod loading platform and drill rod loading platform |
| CN113445940B (en) * | 2021-06-29 | 2024-02-06 | 山西天地王坡煤业有限公司 | Adjustable carrier roller device of drill rod loading platform and drill rod loading platform |
| CN113638706A (en) * | 2021-07-22 | 2021-11-12 | 深圳市工勘岩土集团有限公司 | Pile-forming construction equipment for large-diameter rock-socketed cast-in-place pile with super-thick covering layer |
| CN115387727A (en) * | 2022-10-25 | 2022-11-25 | 山东飞鸿建设集团有限公司 | Supporting device for soil layer drilling machine |
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