阅读说明：本技术 一种用于旋挖钻头和冲击器切换施工的钻机 (Drilling machine for switching construction of rotary drilling bit and impacter ) 是由 张亚婷 于 2019-10-31 设计创作，主要内容包括：本发明公开了一种用于旋挖钻头和冲击器切换施工的钻机,包括钻机转杆、固定连接在钻机转杆下端的动力头驱动套、固定连接在动力头驱动套下端的连接块、旋挖钻头和冲击器,所述连接块下端开设有安装孔,所述旋挖钻头的下端固定安装有钻头截齿,所述旋挖钻头的上端部插接在安装孔内,所述连接块下端部侧壁内对称开设有与安装孔连通的滑槽。本发明通过设置定位机构、推动机构、固定机构、驱动机构、锁紧机构和冲击器,可以快速实现对旋挖钻机钻具的更换,保证旋挖钻机在面对黏土层时使用旋挖钻头来磨削钻进,在面对岩石层时使用冲击器冲击钻进,使得旋挖钻机在对复杂地质结构的桩基孔施工时效率大幅提升。(The invention discloses a drilling machine for switching construction of a rotary drilling bit and an impactor, which comprises a drilling machine rotating rod, a power head driving sleeve fixedly connected to the lower end of the drilling machine rotating rod, a connecting block fixedly connected to the lower end of the power head driving sleeve, a rotary drilling bit and an impactor, wherein an installation hole is formed in the lower end of the connecting block, a bit pick is fixedly installed at the lower end of the rotary drilling bit, the upper end part of the rotary drilling bit is inserted into the installation hole in an inserting mode, and sliding grooves communicated with the installation hole are symmetrically formed in the side wall of the lower end part. According to the invention, by arranging the positioning mechanism, the pushing mechanism, the fixing mechanism, the driving mechanism, the locking mechanism and the impacter, the drilling tool of the rotary drilling rig can be rapidly replaced, the rotary drilling rig is ensured to use the rotary drilling bit to grind and drill when facing a clay layer, and the impacter is used to impact and drill when facing a rock layer, so that the efficiency of the rotary drilling rig is greatly improved when constructing pile foundation holes with complex geological structures.)

1. A drilling machine for switching construction of a rotary drilling bit and an impactor comprises a drilling machine rotating rod (1), a power head driving sleeve (2) fixedly connected to the lower end of the drilling machine rotating rod (1), a connecting block (3) fixedly connected to the lower end of the power head driving sleeve (2), a rotary drilling bit (5) and the impactor, and is characterized in that a mounting hole (4) is formed in the lower end of the connecting block (3), a drill bit cutting tooth (6) is fixedly mounted at the lower end of the rotary drilling bit (5), the upper end portion of the rotary drilling bit (5) is inserted into the mounting hole (4), sliding grooves (14) communicated with the mounting hole (4) are symmetrically formed in the side wall of the lower end portion of the connecting block, a positioning mechanism used for accurately positioning the rotary drilling bit (5) is mounted in the sliding grooves (14), device cavities (7) are symmetrically formed in the side wall of the upper end portion of the connecting block (3), and a threaded, threaded connection has sleeve (9) on threaded rod (8), install the fixed establishment who is used for fixed rotary drill bit (5) on the lateral wall of sleeve (9), threaded rod (8) extend to on connecting block (3) lateral wall, install on threaded rod (8) and be used for driving threaded rod (8) pivoted actuating mechanism, still install the locking mechanism who is used for locking threaded rod (8) on threaded rod (8).

2. The drilling machine for switching construction of the rotary drilling bit and the impacter according to claim 1, wherein the positioning mechanism comprises a sliding block (15) connected between inner walls of a sliding groove (14) in a sliding manner, a positioning ball (16) is embedded in a side wall of the sliding block (15), first ball grooves (17) are formed in two side walls of the upper end portion of the rotary drilling bit (5), the first ball grooves (17) are matched with the positioning ball (16), the positioning ball (16) is embedded in the first ball grooves (17), and a pushing mechanism for pushing a sliding plug to move horizontally is mounted on the side wall of the sliding block (15).

3. The drilling machine for switching construction of the rotary drilling bit and the impacter according to claim 2, wherein the pushing mechanism comprises a push rod (18), one end of the push rod (18) is fixedly connected to the side wall of the sliding block (15), the other end of the push rod (18) extends to the side wall of the connecting block (3) and is fixedly connected with a push block (20), the sliding block (15) is elastically connected with the inner side wall of the sliding groove (14) through a spring (19), and the spring (19) is sleeved outside the push rod (18).

4. The drilling machine for switching construction of the rotary drilling bit and the impactor as claimed in claim 1, wherein the fixing mechanism comprises fixing pins (10) symmetrically and fixedly connected to the side walls of the sleeve (9), first fixing pin holes (11) matched with the fixing pins (10) are formed in both side walls of the upper end portion of the rotary drilling bit (5), and free ends of the fixing pins (10) extend to the mounting hole (4) and are inserted into the first fixing pin holes (11).

5. The drilling machine for switching construction of the rotary drilling bit and the impacter according to claim 1, wherein the driving mechanism comprises a rocker (12) and a rotating handle (13), the rocker (12) is fixedly connected to the tail end of the extending part of the threaded rod (8) outside the connecting block (3), the rotating handle (13) is fixedly connected to one end, away from the threaded rod (8), of the rocker (12), an anti-skid rubber sleeve (27) wraps the side wall of the rotating handle (13), and anti-skid threads are formed in the anti-skid rubber sleeve (27).

6. The drilling machine for rotary drilling bit and impactor switching construction according to claim 1, wherein the locking mechanism comprises a ratchet wheel (30) and a pawl (26), the ratchet wheel (30) is coaxially and fixedly connected to a portion, located outside the connecting block (3), of the threaded rod (8), the pawl (26) is rotatably connected to the side wall of the connecting block (3), and the ratchet wheel (30) is matched with the pawl (26).

7. The drilling machine for switching construction of the rotary drilling bit and the impactor as claimed in claim 1, wherein the impactor comprises an oil storage cylinder (21), an oil cylinder power assembly (22), a hydraulic oil cylinder (23) and an impact head (24), the oil cylinder power assembly (22) is fixedly connected to the lower end of the oil storage cylinder (21), the hydraulic oil cylinder (23) is fixedly connected to the lower end of the oil cylinder power assembly (22), the impact head (24) is fixedly connected to the telescopic end of the hydraulic oil cylinder (23), the oil storage cylinder (21) is communicated with the oil cylinder power assembly (22), and the oil cylinder power assembly (22) is communicated with the hydraulic oil cylinder (23) through an oil guide pipe (25).

8. The drilling machine for the rotary drilling bit and impactor switching construction according to claim 7, wherein the outer shape of the oil storage cylinder (21) is the same as the shape of the upper end of the rotary drilling bit (5), two side walls of the upper end of the oil storage cylinder (21) are provided with second fixing pin holes (29) completely consistent with the first fixing pin holes (11), two side walls of the upper end of the oil storage cylinder (21) are also provided with second ball grooves (28) completely consistent with the first ball grooves (17), and the positions of the second fixing pin holes (29) and the second ball grooves (28) relative to the oil storage cylinder (21) are the same as the positions of the first fixing pin holes (11) and the first ball grooves (17) relative to the rotary drilling bit (5).

Technical Field

The invention relates to the technical field of pile foundation drilling equipment, in particular to a drilling machine for switching construction of a rotary drilling bit and an impactor.

Background

The rotary drilling rig is also called a pile driver, is a comprehensive drilling rig and has the advantages of strong maneuverability, rapid field transition, various drilling tools and the like. The efficiency of the rotary drilling rig in the process of covering a clay layer for drilling construction is very high, but when the rotary drilling rig encounters a hard rock stratum, if the rock is ground and drilled by a bit pick, the drilling speed is low, the drilling efficiency is low, at the moment, a down-the-hole impactor needs to be replaced to drill in the hard rock stratum, the impact of a piston is relied on, the drilling speed is very high, but the impactor is easy to remove slag and is not smooth when facing the clay layer, and the drilling is weak.

In the process of pile foundation hole drilling construction, often can meet two kinds of above geological structures simultaneously, consequently need in time change the drilling tool of digging the rig soon according to actual conditions, and current dig the rig soon when changing the drilling tool construction, because the fixed knot of drilling tool is comparatively complicated, consequently change efficiency is lower, and the construction site is mostly unsuitable large-scale rig equipment frequently to move, consequently the pile foundation hole efficiency of construction of current complicated geological structure is not high.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a drilling machine for switching construction of a rotary drilling bit and an impactor.

In order to achieve the purpose, the invention adopts the following technical scheme:

a drilling machine for switching construction of a rotary drilling bit and an impactor comprises a drilling machine rotary rod, a power head driving sleeve fixedly connected to the lower end of the drilling machine rotary rod, a connecting block fixedly connected to the lower end of the power head driving sleeve, a rotary drilling bit and an impactor, wherein a mounting hole is formed in the lower end of the connecting block, a drill bit cutting tooth is fixedly mounted at the lower end of the rotary drilling bit, the upper end part of the rotary drilling bit is inserted into the mounting hole, sliding grooves communicated with the mounting hole are symmetrically formed in the side wall of the lower end part of the connecting block, positioning mechanisms for accurately positioning the rotary drilling bit are mounted in the sliding grooves, device cavities are symmetrically formed in the side wall of the upper end part of the connecting block, threaded rods are rotatably connected between the opposite inner walls of the device cavities, sleeves are in threaded connection with the threaded rods, fixing mechanisms, the threaded rod is provided with a driving mechanism for driving the threaded rod to rotate, and the threaded rod is also provided with a locking mechanism for locking the threaded rod.

Preferably, the positioning mechanism comprises a sliding block which is slidably connected between the inner walls of the sliding groove, a positioning ball is embedded in the side wall of the sliding block, first ball grooves are formed in the two side walls of the upper end portion of the rotary drilling bit and matched with the positioning ball, the positioning ball is embedded in the first ball grooves, and a pushing mechanism used for pushing the sliding plug to horizontally displace is installed on the side wall of the sliding block.

Preferably, pushing mechanism includes the push rod, the one end fixed connection of push rod is at the slider lateral wall, the other end of push rod extends to connecting block lateral wall and fixedly connected with ejector pad, the slider passes through spring and spout inside wall elastic connection, just the spring housing is established at the push rod outside.

Preferably, the fixing mechanism comprises fixing pins symmetrically and fixedly connected to the side wall of the sleeve, first fixing pin holes matched with the fixing pins are formed in the two side walls of the upper end portion of the rotary drilling bit, and the free ends of the fixing pins extend to the mounting holes and are inserted into the first fixing pin holes.

Preferably, actuating mechanism includes rocker and twist grip, rocker fixed connection is on the outer tip of threaded rod extension department connecting block, twist grip fixed connection is in the one end that the threaded rod was kept away from to the rocker, just twist grip's lateral wall parcel has the anti-skidding gum cover, the anti-skidding line has been seted up on the anti-skidding gum cover.

Preferably, the locking mechanism comprises a ratchet wheel and a pawl, the ratchet wheel is coaxially and fixedly connected to the part, located outside the connecting block, of the threaded rod, the pawl is rotatably connected to the side wall of the connecting block, and the ratchet wheel is matched with the pawl.

Preferably, the impactor comprises an oil storage cylinder, an oil cylinder power assembly, a hydraulic oil cylinder and an impact head, wherein the oil cylinder power assembly is fixedly connected to the lower end of the oil storage cylinder, the hydraulic oil cylinder is fixedly connected to the lower end of the oil cylinder power assembly, the impact head is fixedly connected to the telescopic end of the hydraulic oil cylinder, the oil storage cylinder is communicated with the oil cylinder power assembly, and the oil cylinder power assembly is communicated with the hydraulic oil cylinder through an oil guide pipe.

Preferably, the outer shape of the oil storage cylinder is the same as the shape of the upper end of the rotary drilling bit, the two side walls of the upper end of the oil storage cylinder are provided with second fixing pin holes completely consistent with the first fixing pin holes, the two side walls of the upper end of the oil storage cylinder are further provided with second ball grooves completely consistent with the first ball grooves, and the positions of the second fixing pin holes and the second ball grooves relative to the oil storage cylinder are the same as the positions of the first fixing pin holes and the first ball grooves relative to the rotary drilling bit.

The invention has the following beneficial effects:

1. by arranging the positioning mechanism, the pushing mechanism, the fixing mechanism, the driving mechanism, the locking mechanism and the impacter, the pushing block can be pulled, the pushing rod drives the sliding block to move towards two sides of the connecting block, the upper end part of the rotary drilling bit or the oil storage cylinder is inserted into the mounting hole, the pushing block is loosened, the ground sliding block is reset under the action of the spring, the positioning balls are embedded into the corresponding ball grooves, the rotary drilling bit and the oil storage cylinder are accurately positioned, then the rocker is rotated, the threaded rod is rotated, the driving sleeve drives the fixing pin to horizontally move and is inserted into the corresponding fixing pin hole, and therefore the fixed mounting of the rotary drilling bit or the impacter is completed, the operation is convenient, and the drilling tool replacement efficiency of;

2. through the mutual replacement use between the rotary drilling bit and the impacter, the rotary drilling rig is guaranteed to use the rotary drilling bit to grind and drill when facing a clay layer, the impacter is used for impacting and drilling when facing a rock layer, and the efficiency of the rotary drilling rig is greatly improved when constructing pile foundation holes of complex geological structures.

Drawings

FIG. 1 is a schematic structural diagram of a drilling rig for switching construction of a rotary drill bit and an impactor according to the invention in a state of assembling the rotary drill bit;

FIG. 2 is a schematic structural diagram of a drilling machine for switching construction of a rotary drilling bit and an impactor, which is provided by the invention, in a state of assembling the impactor;

FIG. 3 is a schematic view of the structure at A in FIG. 1;

FIG. 4 is a schematic view of the structure at B in FIG. 1;

FIG. 5 is a side view of the connector block of the present invention;

fig. 6 is a schematic structural view of the impactor according to the invention.

In the figure: the drilling machine comprises a drilling machine rotating rod 1, a power head driving sleeve 2, a connecting block 3, a mounting hole 4, a rotary drilling bit 5, a drill bit pick 6, a device cavity 7, a threaded rod 8, a sleeve 9, a fixing pin 10, a first fixing pin hole 11, a rocker 12, a rotating handle 13, a sliding groove 14, a sliding block 15, a positioning ball 16, a first ball groove 17, a push rod 18, a spring 19, a push block 20, an oil storage cylinder 21, an oil cylinder power assembly 22, a hydraulic oil cylinder 23, an impact head 24, an oil guide pipe 25, a pawl 26, an anti-skid rubber sleeve 27, a second ball groove 28 and a second fixing pin hole 29.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-6, a drilling machine for switching construction of a rotary drilling bit and an impactor, the drilling machine comprises a drilling machine rotating rod 1, a power head driving sleeve 2 fixedly connected to the lower end of the drilling machine rotating rod 1, a connecting block 3 fixedly connected to the lower end of the power head driving sleeve 2, a rotary drilling bit 5 and the impactor, wherein a mounting hole 4 is formed in the lower end of the connecting block 3, a drill bit cutting tooth 6 is fixedly mounted at the lower end of the rotary drilling bit 5, the upper end portion of the rotary drilling bit 5 is inserted into the mounting hole 4 in an inserting mode, and sliding grooves 14 communicated with the mounting hole 4 are.

Install in the spout 14 and be used for accurate positioning to dig positioning mechanism of drill bit 5 soon, positioning mechanism includes slider 15 of sliding connection between the spout 14 inner wall, and slider 15's lateral wall inlays and is equipped with location ball 16, and first ball groove 17 has all been seted up to the upper end both sides wall of digging drill bit 5 soon, first ball groove 17 and the cooperation of location ball 16, and location ball 16 inlays and establishes in first ball groove 17, installs the pushing mechanism who is used for promoting sliding plug horizontal displacement on the slider 15 lateral wall.

Pushing mechanism includes push rod 18, and the one end fixed connection of push rod 18 is at slider 15 lateral wall, and the other end of push rod 18 extends to connecting block 3 lateral wall and fixedly connected with ejector pad 20, and slider 15 passes through spring 19 and 14 inside wall elastic connection of spout, and spring 19 cover establishes at push rod 18 outside.

Device chamber 7 has been seted up to the symmetry in the 3 upper end lateral walls of connecting block, it is connected with threaded rod 8 to rotate between the relative inner wall in device chamber 7, threaded connection has sleeve 9 on the threaded rod 8, install the fixed establishment that is used for the fixed drill bit 5 of digging soon on sleeve 9's the lateral wall, fixed establishment is including symmetry fixed connection at the fixed pin 10 of sleeve 9 lateral wall, dig all offer on the wall of drill bit 5 upper end both sides soon with fixed pin 10 complex first fixed pinhole 11, the free end of fixed pin 10 extends to mounting hole 4 and plug connects in first fixed pinhole 11.

Threaded rod 8 extends to 3 lateral walls of connecting block, installs on threaded rod 8 and is used for driving 8 pivoted actuating mechanism of threaded rod, and actuating mechanism includes rocker 12 and twist grip 13, and rocker 12 fixed connection is on the outer end of threaded rod 8 extension department connecting block 3, and twist grip 13 fixed connection is in the one end that threaded rod 8 was kept away from to rocker 12, and twist grip 13's lateral wall parcel has anti-skidding gum cover 27, has seted up anti-skidding line on the anti-skidding gum cover 27.

The threaded rod 8 is also provided with a locking mechanism for locking the threaded rod 8, the locking mechanism comprises a ratchet wheel 30 and a pawl 26, the ratchet wheel 30 is coaxially and fixedly connected to the part of the threaded rod 8, which is positioned outside the connecting block 3, the pawl 26 is rotatably connected to the side wall of the connecting block 3, and the ratchet wheel 30 is matched with the pawl 26.

The impactor comprises an oil storage cylinder 21, an oil cylinder power assembly 22, a hydraulic oil cylinder 23 and an impact head 24, wherein the oil cylinder power assembly 22 is fixedly connected to the lower end of the oil storage cylinder 21, the hydraulic oil cylinder 23 is fixedly connected to the lower end of the oil cylinder power assembly 22, the impact head 24 is fixedly connected to the telescopic end of the hydraulic oil cylinder 23, the oil storage cylinder 21 is communicated with the oil cylinder power assembly 22, and the oil cylinder power assembly 22 is communicated with the hydraulic oil cylinder 23 through an oil guide pipe 25.

The outer shape of the oil storage cylinder 21 is the same as the shape of the upper end of the rotary drill bit 5, the two side walls of the upper end of the oil storage cylinder 21 are provided with second fixing pin holes 29 completely consistent with the first fixing pin holes 11, the two side walls of the upper end of the oil storage cylinder 21 are also provided with second ball grooves 28 completely consistent with the first ball grooves 17, and the positions of the second fixing pin holes 29 and the second ball grooves 28 relative to the oil storage cylinder 21 are the same as the positions of the first fixing pin holes 11 and the first ball grooves 17 relative to the rotary drill bit 5.

In the invention, when facing a clay layer, a drill bit cutting tooth 6 of the rotary drilling drill bit 5 is required to grind and drill clay, a main driving motor of the drilling machine is started to drive a drill rotating rod 1 of the drilling machine to rotate, and then the rotary drilling drill bit 5 is driven to rotate through a power head driving sleeve 2 and a connecting block 3, so that the drill bit cutting tooth 6 grinds and drills clay.

When facing the rock layer, need to dig drill bit 5 soon and change for the impacter, hold twist grip 13 earlier, rotate rocker 12, make threaded rod 8 synchronous rotation, thereby make sleeve 9 drive fixed pin 10 to the displacement of connecting block 3 both sides, fixed pin 10, roll-off in first fixed pinhole 11 is followed, cancel connecting block 3 fixed to digging drill bit 5 soon, stimulate ejector pad 20 afterwards, make push rod 18 drive slider 15 to the sliding of connecting block 3 both sides, 16 follow first ball inslots roll-off of location ball, take off this moment and dig drill bit 5 soon, loosen ejector pad 20.

And taking out the prepared impactor, pulling the push block 20 again, inserting the oil storage cylinder 21 into the mounting hole 4, loosening the push block 20 to enable the sliding block 15 and the positioning ball 16 to reset under the elastic action of the spring 19, embedding the positioning ball 16 into the second ball groove 28 to finish accurate positioning of the oil storage cylinder 21, aligning the fixing pin 10 with the second fixing pin hole 29 at the moment, holding the rotating handle 13, reversely rotating the rocker 12 to enable the threaded rod 8 to synchronously and reversely rotate, driving the fixing pin 10 to move towards the oil storage cylinder 21 by the sleeve 9, and inserting the fixing pin into the second fixing pin hole 29 to finish mounting and fixing of the impactor.

At this time, the cylinder power assembly 22 is started, the cylinder power assembly 22 not only works, but also switches the input and output states at a high speed, so that the telescopic end of the hydraulic cylinder 23 is continuously telescopic, and the impact head is driven to perform high-speed impact drilling on the rock stratum.

According to the invention, the rotary drilling bit 5 and the impacter are mutually replaced and used, so that the rotary drilling rig is ensured to use the rotary drilling bit 5 to grind and drill when facing a clay layer, and the impacter is used to impact and drill when facing a rock layer, and the efficiency of the rotary drilling rig is greatly improved when constructing pile foundation holes with complex geological structures.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.