CN210217619U - Multifunctional drilling machine - Google Patents

Multifunctional drilling machine Download PDF

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Publication number
CN210217619U
CN210217619U CN201921237338.3U CN201921237338U CN210217619U CN 210217619 U CN210217619 U CN 210217619U CN 201921237338 U CN201921237338 U CN 201921237338U CN 210217619 U CN210217619 U CN 210217619U
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CN
China
Prior art keywords
drill
mounting seat
drilling
barrel
main shaft
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CN201921237338.3U
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Inventor
Guopei Yang
杨国培
Anmin Liu
刘安民
Qingxue Kong
孔庆学
Qianzhi Mou
牟乾志
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Chongqing Yujiao Electrical And Mechanical Equipment Co Ltd
Chongqing Vocational College of Transportation
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Chongqing Yujiao Electrical And Mechanical Equipment Co Ltd
Chongqing Vocational College of Transportation
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Priority to CN201921237338.3U priority Critical patent/CN210217619U/en
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Abstract

The utility model discloses a multifunctional drilling machine, include: the frame comprises a frame, a first mounting seat, a second mounting seat, a third mounting seat and a fourth mounting seat, wherein the first mounting seat, the second mounting seat and the third mounting seat are arranged at the front end of the frame at intervals along the width direction of the frame, and the fourth mounting seat is arranged on the frame and is positioned above the second mounting seat; the two drilling machines are respectively arranged on the first mounting seat and the third mounting seat through a drilling arm; the auxiliary tool is arranged on the second mounting seat through a working arm and comprises a drilling machine, a breaking hammer or a milling and digging head; and the hanging basket is arranged on the fourth mounting seat through a hanging basket arm, and a splitter can be arranged in the hanging basket. The utility model discloses a multifunctional drilling machine has multiple functions such as drilling, breakage, milling and digging, splitting, can use required device aggregate erection on the frame according to tunnel construction technology's requirement, adopts a multifunctional drilling machine can all accomplish the non-blasting excavation work in hard rock tunnel, adopts the mechanical integration construction, and the personnel demand is few.

Description

Multifunctional drilling machine
Technical Field
The utility model relates to a drilling equipment tunnel excavates technical field, concretely relates to multifunctional drilling machine.
Background
In tunnel construction projects, non-blasting hard rock (superhard) (50MPa and above) construction projects are more and more, and in such a situation, tunnel construction requires various requirements such as safety, high efficiency, environmental protection, energy conservation and the like, so that the requirements on construction equipment are increasingly high. The existing tunnel construction equipment mainly comprises the following devices:
firstly, water grinding and drilling: the process adopts a grinding principle, grinding teeth on a drill cylinder are utilized to grind annular seams on rocks, a hole washing medium is water, the power is generally a motor with 7.5KW-10KW, and the operation mode is manual operation; the process for construction by adopting the water mill drill has the advantages of low energy consumption, environmental protection (no dust generation), wide application range (soft rock, hard rock, backfill soil, reinforced concrete and the like can be perforated) and simple operation and maintenance, but has low working efficiency (generally, the excavation can not exceed 50 in 10 hours for one machine team), low safety factor (because of low efficiency, a plurality of people are required to drill holes simultaneously, and the water mill drill is close to the face).
(II) engineering development machine: the nominal maximum cuttable rock hardness of the existing tunnel boring machine (three-in-one loading, slow-working and medium iron equipment) reaches 130MPa, the most economical cutting rock is lower than 50MPa in actual construction, and cutting teeth and power consumption are very high when the hard rock is cut. The power of the cutting head of the existing large development machine reaches more than 300KW, and the power of other oil pump motors and fans is added, so that the power of the whole development machine is generally more than 500 KW; this equipment mainly adopts mechanical construction, and personnel's demand is few, and the security is high, but economic nature is relatively poor (disposable input is big, does not contain single unit equipment more than 500W yuan under the supporting condition), not environmental protection (the cutting dust is very big, needs supporting dust collecting equipment behind, and the current market has not reached the dust removal supporting of environmental protection requirement yet), the place requires highly (needs electric power to change the special line).
(III) sawing (including circular saw and wire saw): wherein, the circular saw is not easy to mechanize (the circular saw needs to be stable and uniform, the face surface is not flat), and has dead corners (the back corner position of circular arc connection can not be back chipping, which causes the need of other subsequent processes; the rope saw is generally suitable for the exploitation of open-air granite, needs to drill holes in advance in tunnel construction, and has the disadvantages of complex operation and high use cost.
(IV) the splitter: the splitting machine is mainly applied to expanding and splitting the rock after water-mill drilling and sawing construction.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a multifunctional drilling machine has multiple functions such as drilling, breakage, mills and digs, splitting, and the requirement according to tunnel construction technology can use required device aggregate erection on the frame.
To achieve the purpose, the utility model adopts the following technical proposal:
in one aspect, there is provided a multi-function drill including:
the mounting structure comprises a frame, a first mounting seat, a second mounting seat, a third mounting seat and a fourth mounting seat, wherein the first mounting seat, the second mounting seat and the third mounting seat are arranged at the front end of the frame at intervals along the width direction of the frame;
the two drilling machines are respectively arranged on the first mounting seat and the third mounting seat through a drilling arm;
the auxiliary tool is mounted on the second mounting seat through a working arm and comprises a drilling machine, a breaking hammer or a milling and digging head;
the hanging basket is installed on the fourth installation seat through a hanging basket arm, and a splitter can be installed in the hanging basket.
As a preferable aspect of the multifunctional drilling machine, the drilling machine includes:
the speed reducer comprises a hydraulic motor and a hollow main shaft in transmission connection with the hydraulic motor, one end of the hollow main shaft is provided with a water inlet ring sleeved on the hollow main shaft, a first medium channel is arranged in the water inlet ring, the outer wall of the water inlet ring is provided with a water inlet hole communicated with the first medium channel, a plurality of second medium channels are arranged in the shaft wall of the hollow main shaft at intervals, and one ends of the second medium channels are communicated with the first medium channel;
the drilling device comprises a drilling barrel in a tubular structure and a drill bit connected with one end of the drilling barrel, one end, far away from the drill bit, of the drilling barrel is connected with one end, far away from the water inlet ring, of the hollow main shaft, a third medium channel is arranged in the pipe wall of the drilling barrel, one end of the third medium channel is located at the drill bit, and when the drilling barrel is connected with the hollow main shaft, the other end of the third medium channel is communicated with one end, far away from the first medium channel, of the second medium channel.
As a preferable scheme of the multifunctional drilling machine, a water tank communicated with the water inlet hole is annularly arranged on the inner wall of the water inlet ring, the first medium channel is formed between the water tank and the outer wall of the hollow main shaft, the second medium channel comprises a second medium channel main body, a plurality of first water inlets and a plurality of first water outlets, the first water inlets and the plurality of first water outlets are located on the outer wall of the hollow main shaft and are respectively communicated with the second medium channel main body, and the first water inlets are communicated with the first medium channel; the pipe wall of the drill barrel is internally provided with a plurality of third medium channels at intervals along the circumferential direction of the pipe wall, each third medium channel comprises a third medium channel main body, a second water inlet and a second water outlet, the second water inlets are communicated with the third medium channel main bodies, the second water inlets are arranged on the inner wall of the drill barrel and are positioned at one end, far away from the drill bit, of the drill barrel, the second water outlets are positioned at the drill bit, and when the drill barrel is connected with the hollow main shaft, the second water inlets are communicated with the first water outlets.
As a preferable scheme of the multifunctional drilling machine, the hollow main shaft comprises a main shaft body and a main shaft connecting section connected with one end of the main shaft body, which is far away from the water inlet ring, wherein the main shaft connecting section is provided with an external thread; the drill cylinder comprises a drill cylinder body and a drill cylinder connecting section connected with one end, far away from the drill bit, of the drill cylinder body, and the drill cylinder connecting section is provided with a threaded hole capable of being screwed with the external thread.
As a preferable scheme of the multifunctional drilling machine, the third medium channel main body comprises a first sub-channel positioned at the drill cylinder connecting section and a second sub-channel positioned at the drill cylinder body, the first sub-channel includes a first sub-channel body, the second water inlet and a third water outlet communicating with the first sub-channel body, the second water inlet and the threaded hole are both positioned on the inner wall of the drill cylinder connecting section, the third water outlet is arranged on the inner wall of the drill cylinder connecting section and is adjacent to the drill bit, the second sub-passage includes a second sub-passage body, a third water inlet and the second water outlet that communicate with the second sub-passage body, the third water inlet is positioned on the inner wall of the drill cylinder body and is adjacent to one end of the drill cylinder body close to the drill cylinder connecting section, and the second water outlet is positioned at one end of the drill cylinder body close to the drill bit.
As a preferable scheme of the multifunctional drilling machine, the drill cylinder body comprises a drill cylinder main body and a plurality of cover plates, a plurality of groove structures are arranged on the outer wall of the drill cylinder main body at intervals along the circumferential direction of the drill cylinder main body, the length of each groove structure extends along the length direction of the drill cylinder main body, the cover plates are welded at the opening ends of the groove structures, and the second sub-channel main body is formed between each groove structure and the corresponding cover plate.
As a preferable aspect of the multifunctional drilling machine, the drilling machine further comprises:
the mounting base comprises a base, side plates positioned at two ends of the base, first guide rods positioned at two sides of the base and a second guide rod positioned below the first guide rods, two ends of each of the first guide rods and the second guide rods are respectively connected with one of the side plates, the speed reducer and the drill bit are respectively connected with one of the side plates, and the speed reducer is connected with the first guide rods in a sliding manner through a first sliding block;
the two first oil cylinders are mounted on the side plate close to the speed reducer at intervals and connected with the mounting shell of the speed reducer;
one end of the second oil cylinder is fixed below the base, the other end of the second oil cylinder is connected with a mounting seat positioned below the base, and the mounting seat is connected with the second guide rod in a sliding mode through a second sliding block;
and the rotary speed reducer is positioned below the base and fixedly connected with the mounting seat, and is connected with the drill boom through a connecting piece.
As a preferable scheme of the multifunctional drilling machine, the heights of the first mounting seat and the second mounting seat can be adjusted.
As a preferred scheme of multi-functional rig, first mount pad with the structure of second mount pad is the same completely, first mount pad includes first mounting panel and the second mounting panel that the interval set up and is located first mounting panel with connecting plate between the second mounting panel, first mounting panel is fixed on the frame, the second mounting panel passes through the connecting plate with first mounting panel swing joint, just the second mounting panel is connected with the jacking drive arrangement of second mounting panel.
As an optimal scheme of the multifunctional drilling machine, the number of the connecting plates is two, the two connecting plates are arranged in an up-down parallel and inclined mode, one end of each connecting plate is pivoted with the first mounting plate through a pivoting shaft, the other end of each connecting plate is pivoted with the second mounting plate through a pivoting shaft, a first connecting piece and a second connecting piece are arranged on one side, away from the first mounting plate 121, of the second mounting plate from top to bottom at intervals, the first connecting pieces are connected with the drill boom, the driving device is a hydraulic oil cylinder arranged on the frame and close to one end of the drilling machine, and the hydraulic oil cylinder is located below the second connecting pieces and connected with the second connecting pieces.
The utility model has the advantages that: the utility model discloses a with a plurality of rigs, with assist the utensil integration and install on the frame to carry out rationally overall arrangement to rig, hanging flower basket and the installation position of assisting the utensil, can make multi-functional rig have drilling, breakage, mill multiple functions such as digging, splitting, can use required device composite mounting on the frame according to the requirement of tunnel construction technology, adopt a multi-functional rig can all accomplish the non-blasting excavation work in hard rock tunnel, adopt the mechanical integration construction, personnel's demand is few.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a side view of a multifunctional drilling machine (a drilling machine is respectively installed at a first installation position and a third installation position) according to an embodiment of the present invention.
Fig. 2 is a view in the direction P of fig. 1.
Fig. 3 is a side view of a multifunctional drilling machine (with the drilling machine installed in the second installation position) according to an embodiment of the present invention.
Fig. 4 is a side view of a multi-function drill (second installation site with breaking hammer) according to an embodiment of the present invention.
Fig. 5 is a side view of a multifunctional drilling machine (a basket is mounted at a fourth mounting position) according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a drilling machine according to an embodiment of the present invention, which is mounted on a first mounting base through a drill boom.
Fig. 7 is a schematic structural diagram of a drilling machine according to an embodiment of the present invention.
Fig. 8 is a side view of a perspective of a drilling rig according to an embodiment of the present invention.
Fig. 9 is a side view from another perspective of a drilling rig in accordance with an embodiment of the present invention.
Fig. 10 is a cross-sectional view of a drilling rig in accordance with an embodiment of the present invention.
Fig. 11 is a schematic structural diagram of a speed reducer according to an embodiment of the present invention.
Fig. 12 is an exploded schematic view of a speed reducer (excluding a mounting case and a base) according to an embodiment of the present invention.
Fig. 13 is an exploded cross-sectional view of a drilling device according to an embodiment of the present invention.
Fig. 14 is a side view of a drill body of a drilling device according to an embodiment of the present invention.
Fig. 15 is a partially exploded cross-sectional view of a drill body of a drilling device according to an embodiment of the present invention.
Fig. 16 is a schematic view of a hole facing the void drilled in the face of a rock according to an embodiment of the present invention.
Fig. 17 is a schematic view of a hole facing the void and a cleavage hole drilled on the tunnel face according to an embodiment of the present invention.
Fig. 18 is a schematic view of a hard rock tunnel after repair of its perimeter profile according to an embodiment of the present invention.
Fig. 19 is a schematic view of a hole facing the void drilled in the face of another embodiment of the present invention.
Fig. 20 is a schematic view of a hole facing the void and a cleavage hole drilled in the face of a rock according to another embodiment of the present invention.
In the figure:
110. a frame; 120. a first mounting seat; 1201. a first mounting plate; 1202. a second mounting plate; 1203. a connecting plate; 130. a second mounting seat; 140. a third mounting seat; 150. a fourth mounting seat; 160. a cable winder; 200. a drilling machine; 300. a drill boom; 400. a breaking hammer; 500. a hanging basket; 600. a basket arm; 700. an electric motor; 800. a diesel engine;
1. a speed reducer; 11. a hydraulic motor; 12. a hollow main shaft; 121. a second medium passage; 1211. a second media passage body; 1212. a first water inlet; 1213. a first water outlet; 122. a main shaft body; 123. a main shaft connection section; 124. an external thread; 13. a water inlet ring; 131. a first medium passage; 132. a water inlet hole; 14. a lubricating oil baffle; 15. friction reducing sheets; 161. a connecting plate; 17. installing a shell; 18. a base; 19. a first slider;
2. a drilling device; 21. drilling a barrel; 211. a third medium passage; 2111. a second water inlet; 2112. a second water outlet; 2113. a first sub-channel body; 2114. a third water outlet; 2115. a second sub-channel body; 2116. a third water inlet; 212. A drill barrel body; 2121. a drill barrel body; 2122. a cover plate; 2123. a first groove; 2124. a second groove; 213. a drill barrel connecting section; 214. a threaded hole; 215. a first mounting groove; 216. a second mounting groove; 22. a drill bit; 221. a drill bit connecting section; 222. a drill bit body; 223. an annular projection; 224. a fourth media channel; 2241. a water collection tank; 2242. a third sub-channel;
3. mounting a base; 31. a base; 32. a side plate; 33. a first guide bar; 34. a second guide bar;
4. a first cylinder; 5. a second cylinder; 6. a mounting seat; 7. a second slider; 8. a rotary speed reducer; 9. pushing the core rod;
101. a face hole; 1011. a first face void; 1012. a second face hole; 102. and (6) splitting the hole.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.
In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 5, an embodiment of the present invention provides a multifunctional drilling machine, including:
a frame 110, a first mounting seat 120, a second mounting seat 130, a third mounting seat 140, and a fourth mounting seat 150 mounted on the frame 110 and located above the second mounting seat 130, the first mounting seat, the second mounting seat 130, and the third mounting seat 140 being spaced apart from each other in a width direction of the frame 110 at a front end of the frame 110;
two drilling machines 200, wherein the two drilling machines 200 are respectively arranged on the first mounting seat 120 and the third mounting seat 140 through a drilling arm 300;
the auxiliary tool is arranged on the second mounting seat 130 through a working arm and comprises a drilling machine 200, a breaking hammer 400 or a milling and digging head;
a hanging basket 500, the hanging basket 500 is arranged on the fourth mounting seat 150 through a hanging basket arm 600, and a splitter can be arranged in the hanging basket 500.
In the embodiment, a plurality of drilling machines 200, a plurality of hanging baskets 500 and a plurality of auxiliary tools (the drilling machines 200, the breaking hammers 400 or the milling heads) are integrally installed on the carriage 110, and the installation positions of the drilling machines 200, the hanging baskets 500 and the auxiliary tools (the drilling machines 200, the breaking hammers 400 or the milling heads) are reasonably arranged, so that the multifunctional drilling machine has multiple functions of drilling, breaking, milling, splitting and the like, and required devices (the drilling machines 200, the hanging baskets 500 and the auxiliary tools) can be installed on the carriage 110 in a combined mode for use according to the requirements of a tunnel construction process.
The multifunctional drilling machine of the embodiment further comprises a motor 700 and a diesel engine 800, wherein the motor 700 is mounted on the frame 110, the diesel engine 800 can drive the drill arm 300, the working arm and the hanging basket arm 600 to move, and the motor 700 can drive the drilling machine 200, the breaking hammer 400, the milling and digging head and the splitting machine to work. The multifunctional drilling machine adopts double power, wherein the power provided by the diesel engine 800 is only used for walking of the frame 110 and moving of each working device, the working of each working device is driven by the motor 700, the motor 700 adopts 380V power electricity (the power required by the working device of a single drilling machine 200 is 45KW, and the power of the whole drilling machine is 160KW), and the requirement on power supply of a construction site is simple.
Among them, as a preferred embodiment of the present invention, the heights of the first and second mounting seats 120 and 130 are adjustable. Specifically, the first mounting base 120 and the second mounting base 130 have the same structure, and the first mounting base 120 is taken as an example for explanation, as shown in fig. 6, the first mounting base 120 includes a first mounting plate 1201 and a second mounting plate 1202 which are arranged at an interval, and a connecting plate 1203 located between the first mounting plate 1201 and the second mounting plate 1202, the first mounting plate 1201 is fixed on the frame 110, the second mounting plate 1202 is movably connected with the first mounting plate 1201 through the connecting plate 1203, and the second mounting plate 1202 is connected with a driving device capable of lifting up the second mounting plate 1202.
Furthermore, the number of the connecting plates 1203 is two, the two connecting plates 1203 are arranged in an up-and-down parallel and inclined mode, one end of each connecting plate 1203 is pivoted with the first mounting plate 1201 through a pivoting shaft, the other end of each connecting plate 1203 is pivoted with the second mounting plate 1202 through a pivoting shaft, a first connecting piece and a second connecting piece are arranged on one side, away from the first mounting plate 1201, of the second mounting plate 1202 at intervals from top to bottom, the first connecting piece is connected with the drill boom 300, the driving device is a hydraulic oil cylinder installed at one end, close to the drilling machine 200, of the frame 110, and the hydraulic oil cylinder is located below the second connecting piece and connected with the second connecting piece, so that the drilling range of the drilling.
The multifunctional drilling machine of the present embodiment further includes a cable winder 160 installed at the rear end of the carriage 110 for releasing and winding the cable during the forward and backward movement of the carriage 110.
As shown in fig. 7 to 15, the drilling machine 200 of the present embodiment includes:
the speed reducer 1 comprises a hydraulic motor 11 and a hollow main shaft 12 in transmission connection with the hydraulic motor 11, one end of the hollow main shaft 12 is provided with a water inlet ring 13 sleeved on the hollow main shaft 12, a first medium channel 131 is arranged in the water inlet ring 13, a water inlet hole 132 communicated with the first medium channel 131 is arranged on the outer wall of the water inlet ring 13, a plurality of second medium channels 121 are arranged in the shaft wall of the hollow main shaft 12 at intervals, and one ends of the second medium channels 121 are communicated with the first medium channel 131;
the drilling device 2 comprises a drilling barrel 21 in a tubular structure and a drill bit 22 connected with one end of the drilling barrel 21, one end, far away from the drill bit 22, of the drilling barrel 21 is connected with one end, far away from the water inlet ring 13, of the hollow main shaft 12, a third medium channel 211 is arranged in the pipe wall of the drilling barrel 21, one end of the third medium channel 211 is located at the drill bit 22, and when the drilling barrel 21 is connected with the hollow main shaft 12, the other end of the third medium channel 211 is communicated with one end, far away from the first medium channel 131, of the second medium channel 121.
In this embodiment, the number of the hydraulic motors 11 is two (purchased from dengfes), the two hydraulic motors 11 synchronously drive the hollow spindle 12 to rotate, so as to drive the drilling device 2 to drill, wherein the displacement adjustment range of the hydraulic motors 11 is wide (100-.
In the embodiment, the water inlet ring 13 is installed at one end of the hollow main shaft 12 of the speed reducer 1, the other end of the hollow main shaft is connected with the drilling device 2, and the medium channels which are sequentially communicated are respectively arranged in the water inlet ring 13, the shaft wall of the hollow main shaft 12 and the pipe wall of the drilling device 2 and are used for introducing the medium (water and/or gas) so as to separate the medium channels from the external slag discharging channel and the internal slag storing channel, so that the problem of unsmooth slag discharging of the drilling mechanism in the drilling process is avoided, and the drilling efficiency is improved; the traditional medium channels are inner holes of the hollow main shaft and inner holes of the drill cylinder and the drill bit, the medium channels of the embodiment are mainly concentrated in the shaft wall of the hollow main shaft 12 and the pipe wall of the drilling device 2, and compared with the traditional medium channels, the medium channels of the embodiment are smaller in size, the required medium consumption is reduced, and the influence on drilling is smaller; in addition, compare with traditional medium input mode (water installations sets up on drilling equipment's bore section of thick bamboo), this embodiment sets up water ring 13 in the one end that drilling equipment 2 was kept away from to hollow main shaft 12, is located hydraulic motor 11's position department promptly, can reduce whole drilling equipment 2's invalid length, is favorable to the construction in the narrow and small space.
Specifically, the number of the second medium channels 121 is four but not limited to four, and the four second medium channels 121 are uniformly arranged. In other embodiments, the number of the second medium channels 121 may also be three, four, five or more, depending on the overall size of the drilling mechanism.
Wherein, the inner wall of the water inlet ring 13 is annularly provided with a water tank communicated with the water inlet 132, a first medium channel 131 is formed between the water tank and the outer wall of the hollow main shaft 12, the second medium channel 121 comprises a second medium channel main body 1211, a plurality of first water inlets 1212 and a plurality of first water outlets 1213 which are positioned on the outer wall of the hollow main shaft 12 and respectively communicated with the second medium channel main body 1211, and the first water inlets 1212 are communicated with the first medium channel 131; a plurality of third medium channels 211 are arranged in the pipe wall of the drill barrel 21 at intervals along the circumferential direction of the pipe wall, each third medium channel 211 comprises a third medium channel main body, and a second water inlet 2111 and a second water outlet 2112 which are communicated with the third medium channel main body, the second water inlet 2111 is arranged on the inner wall of the drill barrel 21 and is positioned at one end of the drill barrel 21 far away from the drill bit 22, the second water outlet 2112 is positioned at the drill bit 22, and when the drill barrel 21 is connected with the hollow main shaft 12, the second water inlet 2111 is communicated with the first water outlet 1213. In this embodiment, the water inlet ring 13 is fixed, the hydraulic motor 11 drives the hollow main shaft 12 to rotate relative to the water inlet ring 13, the first medium channel 131 is designed to be an annular structure, and the first medium channel 131 can be always communicated with the second medium channel 121 in the rotating process of the hollow main shaft 12. The third medium channel 211 is designed by adopting a sectional structure, so that the drilling device 2 is conveniently and stably connected with the hollow main shaft 12, and meanwhile, the strength and the rigidity of the drilling device 2 are increased.
The hollow main shaft 12 comprises a main shaft body 122 and a main shaft connecting section 123 connected with one end of the main shaft body 122 far away from the water inlet ring 13, and the main shaft connecting section 123 is provided with an external thread 124; the drill barrel 21 comprises a drill barrel body 212 and a drill barrel connecting section 213 connected with one end of the drill barrel body 212 far away from the drill 22, the drill barrel connecting section 213 is provided with a threaded hole 214 capable of being screwed and matched with the external thread 124, namely, the spindle connecting section 123 of the hollow spindle 12 is directly screwed into the threaded hole 214 of the drill barrel connecting section 213, and the invalid length of the whole drilling device 2 can be reduced.
The length of the second medium channel main body 1211 extends along the length direction of the hollow main shaft 12, one end of the second medium channel main body 1211 adjacent to the first water inlet 1212 penetrates through the hollow main shaft 12 and is blocked by a blocking piece (the screw of the above embodiment), the first water outlet 1213 is located at one end of the main shaft main body 122 close to the main shaft connecting section 123, and the other end of the second medium channel main body 1211 extends to the first water outlet 1213. Wherein, a second medium channel main body 1211 can be formed by drilling from one end of the main shaft body 122 far away from the drilling device 2 to the other end, and then a hole is drilled on the outer wall of the main shaft body 122 corresponding to the positions of the water tank and the second water inlet 2111 to be communicated with the second medium channel main body 1211, namely a first water inlet 1212 and a first water outlet 1213 are formed. The second medium passage body 1211 and the first and second water inlets 1212 and 1212 of the present embodiment are conveniently processed.
In this embodiment, the speed reducer 1 further includes two bearings installed on the inner periphery of the water inlet ring 13 and two lubricating oil baffles 14 located at two ends of the water inlet ring 13, the two bearings are sleeved on the hollow main shaft 12 and are adjacent to the end portion of the water inlet ring 13, and the lubricating oil baffles 14 are sleeved on the hollow main shaft 12 and are fixedly connected with the water inlet ring 13. Two lubricating oil baffles 14 are fixed at two ends of the water inlet ring 13 through screws to prevent lubricating oil from leaking and fix the bearing;
in addition, the lubricating oil baffle structure further comprises two friction reducing pieces 15 sleeved on the hollow main shaft 12, one end, far away from the water inlet ring 13, of the lubricating oil baffle 14 is provided with one friction reducing piece 15, and the friction force between the water inlet ring 13 and the hollow main shaft 12 can be reduced due to the arrangement of the friction reducing pieces 15.
In this embodiment, the friction reducing sheet 15 is a thin plate made of PC material or stainless steel material.
The speed reducer 1 further comprises a connecting plate 161 located at one end, close to the water inlet ring 13, of the hollow main shaft 12, a plurality of through holes for plugging pieces to pass through are formed in the connecting plate 161, the plugging pieces pass through the connecting plate 161 to be connected with the second medium channel 121, the connecting plate 161 is located at one end, far away from the water inlet ring 13, of one friction reducing piece 15, and the outer diameter of the connecting plate 161 is larger than the inner diameter of the friction reducing piece 15.
Specifically, the number of the second medium channels 121 is four, and four blocking pieces (screws) penetrate through the connecting plate 161 to be connected with the second medium channels 121 on the hollow main shaft 12, so as to block one port of the second medium channels 121 far away from the drilling device 2.
Along the direction of the drill barrel 21 towards the drill 22, the inner hole wall of the drill barrel connecting section 213 is provided with a first mounting groove 215, a second water inlet 2111, a second mounting groove 216 and a threaded hole 214 in sequence in a surrounding manner, the diameter of the second water inlet 2111 is larger than that of the first mounting groove 215 and the second mounting groove 216, and sealing rings are respectively mounted in the first mounting groove 215 and the second mounting groove 216. When the spindle connecting section 123 is screwed into the threaded hole 214, the arrangement of the two sealing rings can achieve a good sealing effect.
Specifically, the third media passage body includes a first sub-passage at the drill barrel connection section 213 and a second sub-passage at the drill barrel body 212, the first sub-passage includes a first sub-passage body 2113, a second water inlet 2111 communicating with the first sub-passage body 2113 and a third water outlet 2114, the second water inlet 2111 and the threaded hole 214 are both located at the inner wall of the drill barrel connection section 213, the third water outlet 2114 is provided at the inner wall of the drill barrel connection section 213 and adjacent to the drill bit 22, the second sub-passage includes a second sub-passage body 2115, a third water inlet 2116 communicating with the second sub-passage body 2115 and a second water outlet 2112, the third water inlet 2116 is located at the inner wall of the drill barrel body 212 and adjacent to the end of the drill barrel body 212 adjacent to the drill barrel connection section 213, and the second water outlet 2112 is located at the end of the drill barrel body 212 adjacent to the drill bit 22.
In the prior art, a medium channel in the drill cylinder is an annular gap hole, the machining is complex, and the strength and the rigidity of the drilling device are reduced. The medium channel of the drill cylinder body 212 of the embodiment is optimized, the machining is convenient, and compared with the prior art, the strength and the rigidity of the drilling device 2 can be effectively improved. For example, the drill bit body 212 includes a drill bit body 2121 and a plurality of cover plates 2122, the outer wall of the drill bit body 2121 is provided with a plurality of groove structures along the circumference, the length of the groove structures extends along the length direction of the drill bit body 2121, the cover plates 2122 are welded to the open ends of the groove structures, and a second sub-channel body 2115 is formed between the groove structures and the cover plates 2122. The drill body 2121 is made of 45# steel, and the cover 2122 is made of Q345 steel.
Specifically, as shown in fig. 14 and 15, the groove structure includes a first groove 2123 recessed in an outer wall of the drill barrel body 2121 and a second groove 2124 recessed in a bottom of the first groove 2123, the cover plate 2122 is welded in the first groove 2123, the outer wall of the cover plate 2122 and the outer wall of the drill barrel body 2121 form a circular structure to prevent the cover plate 2122 from bulging to affect the drilling quality, and a second sub-channel is formed between the first groove 2123 and the inner wall of the cover plate 2122.
One end of the inner wall of the drill cylinder body 212, which is close to the drill cylinder connecting section 213, is provided with a step hole which is coaxial with the drill cylinder 21, the drill cylinder connecting section 213 is inserted into the step hole and is in interference fit with the step hole, the outer wall of the drill cylinder connecting section 213 is annularly provided with a boss, and the drill cylinder body 212 and the boss are welded and fixed. Drilling a hole in the hole wall of the drill cylinder connecting section 213 and at one end close to the drill cylinder body 212 until the hole is communicated with the second water inlet 2111, so as to form a first sub-channel main body 2113, inserting a plugging member such as a screw into the open end of the drilled hole for plugging, wherein the number of the first sub-channel main bodies 2113 is six, the six first sub-channel main bodies 2113 are uniformly distributed along the circumferential direction of the drill cylinder connecting section 213, correspondingly, the number of the second sub-channel main bodies 2115 is also six, and the six second sub-channel main bodies 2115 are uniformly distributed along the circumferential direction of the drill cylinder body 212.
In this embodiment, the spindle connection section 123 and the threaded hole 214 are both tapered structures, which facilitates smooth and fast screwing connection between the spindle connection section 123 and the threaded hole.
The drill bit 22 comprises a drill bit connecting section 221, a drill bit body 222 connected with the drill bit connecting section 221, and an annular protrusion 223 adjacent to the drill bit body 222 and protruding from the periphery of the drill bit connecting section 221, the drill bit connecting section 221 is screwed with the drill cylinder 21, a fourth medium channel 224 penetrating through two ends of the annular protrusion 223 is arranged in the annular protrusion 223 along the axial direction of the drill bit 22, and when the drill bit body 222 is connected with the drill cylinder 21, the fourth medium channel 224 is communicated with the third medium channel 211.
Wherein the outer diameter of the annular projection 223 is the same as the outer diameter of the drill barrel body 212.
As shown in fig. 13, the fourth medium passage 224 includes a water collecting groove 2241 formed around one end of the annular protrusion 223 close to the drill barrel 21 and a plurality of third sub passages 2242 arranged at intervals in the circumferential direction of the annular protrusion 223, the third sub passages 2242 have a length extending in the axial direction of the drill bit 22, one end of the third sub passage 2242 communicates with the water collecting groove 2241, and the other end thereof penetrates through the annular protrusion 223. The number of the third sub passages 2242 may be three, four, five or even more, depending on the size of the drilling apparatus 2. When the drill bit connection section 221 is connected to the drill barrel 21, the water collection groove 2241 is used to communicate the third medium passage 211 and the third sub passage 2242, so that the number and the arrangement position of the third sub passage 2242 are not limited.
In other embodiments, the outer wall of the drill bit body 212 may be designed to extend to the end of the drill bit body 222 far from the drill bit body 212, without providing the annular protrusion 223 at the periphery of the drill bit connecting section 221, and the third medium passage 211 extends directly to the end of the drill bit body 212 near the drill bit body 222. This structural design is relatively weak in strength and stiffness of the drill bit 22 compared to the structural design described in the above embodiments.
Compared with the prior art, the utility model discloses a setting up of water ring 13 has effectively utilized hydraulic motor 11's length, has reduced whole drilling equipment 2's invalid length, is favorable to being under construction in the narrow and small space. The medium channel is a special channel, the slag discharging channel on the outer wall of the drill cylinder 21 and the slag storage channel in the inner hole of the drill cylinder 21 cannot influence the medium circulation, slag discharging is facilitated, the drilling speed is improved, the medium channel is not influenced by the internal slag storage channel, the medium consumption can be reduced, and the environment is saved.
The speed reducer 1 of the present embodiment further includes a mounting housing 17 for mounting the hydraulic motor 11 and the hollow spindle 12, and a base 18 connected to the mounting housing 17, wherein a first slider 19 is disposed on a side of the base 18 away from the mounting housing 17.
In this embodiment, as shown in fig. 7, the drilling machine 200 further includes:
the drilling machine comprises a mounting base 3, wherein the mounting base 3 comprises a base 31, side plates 32 positioned at two ends of the base 31, first guide rods 33 positioned at two sides of the base 31 and second guide rods 34 positioned below the first guide rods 33, two ends of each of the first guide rods 33 and the second guide rods 34 are respectively connected with one of the side plates 32, a speed reducer 1 and a drilling device 2 are respectively connected with one of the side plates 32, and the speed reducer 1 is connected with the first guide rods 33 in a sliding mode through a first sliding block 19;
the two first oil cylinders 4 are mounted on the side plate 32 close to the speed reducer 1 at intervals and connected with the mounting shell 17 of the speed reducer 1;
one end of the second oil cylinder 5 is fixed below the base 31, the other end of the second oil cylinder 5 is connected with the mounting seat 6 positioned below the base 31, and the mounting seat 6 is connected with the second guide rod 34 in a sliding mode through the second sliding block 7;
and the rotary speed reducer 8 is positioned below the base 31 and fixedly connected with the mounting seat 6, and the rotary speed reducer 8 is connected with the drill boom 300 through a connecting piece.
In this embodiment, the drill boom 300 can be moved up, down, left, and right by hydraulically driving the drilling machine 200. The boom 300 is prior art and will not be described further herein.
The two first oil cylinders 4, the second oil cylinder 5, the drill boom 300 and other working arms are connected with a control system, the control system controls the drill boom 300 to move, the drilling position of the drilling machine 200 on the face of a tunnel can be moved, and the front end of the drilling machine 200 is perpendicular to the face of the tunnel; the control system can control the first oil cylinder 4 to drive the drilling device 2 and the speed reducer 1 to integrally advance or retreat, when the drill bit 22 of the drilling device 2 moves to be close to a face, the control system controls the second oil cylinder 5 to drive four guide rods (two first guide rods 33 and two second guide rods 34) to abut against the face, and then the drill bit 22 is driven to drill through the speed reducer 1; when the drill boom 300 drives the drilling machine 200 to move up, down, left and right, the mounting base 3 or the first oil cylinder 4 may collide with the drill boom 300, and the rotary speed reducer 8 (model: WEA17, purchased from Jiangsu Huafang New energy Co., Ltd.) can drive the whole drilling machine 200 to rotate when working, so that the situation can be completely avoided, and the normal work of the drilling machine 200 can be ensured.
In this embodiment, the drilling machine 200 further includes a core pushing rod 9, one end of the core pushing rod 9 extends to one end of the drill bit 22 far away from the speed reducer 1, the other end of the core pushing rod passes through the hollow main shaft 12 of the speed reducer 1 and is connected with the other side plate 32, a push plate is further installed on the periphery of the core pushing rod 9, and the core pushing rod 9 can be used for pushing against the tunnel face a during drilling and deslagging.
The embodiment of the utility model provides a hard rock tunnel non-blasting construction method is still provided, utilize the multi-functional rig of above-mentioned arbitrary embodiment to bore on hard rock tunnel face and face the sky face hole, split the hole and split the face and carry out the splitting, get into next round of construction after the aftertreatment.
In a specific embodiment, the hard rock tunnel non-blasting construction method comprises the following steps:
s10, drilling a hole 101 facing the empty surface on a rock tunnel face a by using two drilling machines 200 of a first mounting seat 120 and a second mounting seat 130 of the multifunctional drilling machine, so that the hole 101 facing the empty surface has a first hole 1011 facing the empty surface and a second hole 1012 facing the empty surface, wherein the first hole 1011 facing the empty surface is arranged in sequence along the transverse direction, the second hole 1012 facing the empty surface is arranged in sequence along the vertical direction, and the second hole 1012 facing the empty surface is located on the central line of the arrangement direction of the first hole 1011 facing the empty surface, as shown in fig. 16;
s20, drilling a plurality of cleavage holes 102 at intervals on the rock tunnel face 101 by using two drilling machines 200 of the first mounting seat 120 and the second mounting seat 130 of the multifunctional drilling machine, see fig. 17;
s30, splitting the palm surface A along the splitting hole 102 by using a splitter arranged in the hanging basket 500;
s40 repairing the peripheral profile of the hard rock tunnel using the breaking hammer 400 or the milling head mounted on the fourth mount 150, see fig. 18;
s50, after the post-processing is completed, the process proceeds to step S10, and the process loops.
In another specific embodiment, the hard rock tunnel non-blasting construction method comprises the following steps:
s10, drilling a face hole 101 on the tunnel face a of the hard rock tunnel along the contour of the tunnel by using three drilling machines 200 on the first mounting seat 120, the second mounting seat 130 and the third mounting seat 140 of the multifunctional drilling machine, see fig. 19;
s20, drilling a plurality of cleavage holes 102 at intervals on the rock tunnel face a by using three drilling machines 200 on the first mounting seat 120, the second mounting seat 130 and the third mounting seat 140 of the multifunctional drilling machine, referring to fig. 20;
s30, splitting the palm surface A along the splitting hole 102 by using a splitter arranged in the hanging basket 500;
s40, after the post-processing is completed, the process proceeds to step S10, and the process loops.
Compared with the above embodiment, the present embodiment is different in that the face hole 101 is drilled along the contour of the tunnel on the tunnel face a by using a multifunctional drilling machine, so that the step of repairing the peripheral contour of the hard rock tunnel by using the breaking hammer 400 or the milling head can be omitted, and the working efficiency is improved.
In the two embodiments, the drilling depth of each round of the drilling machine 200 is about 1.5m, after the first round of drilling construction is performed, a loader is used for loading slag, and then the next round of drilling construction is performed, namely the steps S10-S40 are repeated; after two-round drilling construction, the drilling depth reaches about 3m, at the moment, in order to ensure the construction safety in the tunnel, after slag is filled, post-treatment operations such as supporting, arch erecting, slurry spraying and the like are carried out on the wall surface of the tunnel, and then the next round of drilling construction is carried out.
In the above embodiment, the holes drilled by the three drilling machines 200 in the multifunctional drilling machine are all annular holes, and the hole washing medium is water, so that compared with the conventional water mill drilling machine, after water is fed through the special medium channel of the drilling machine 200 in the embodiment, the water consumption can be reduced (only about 1 cubic meter is needed in one hour).
The non-blasting construction method for the hard rock tunnel in the embodiment has the following technical effects:
1. high efficiency: the mechanical complete construction process adopts a multifunctional drilling machine to completely complete the tunnel excavation work of the tunnel face A;
2. safety: the mechanical integrated construction is adopted, so that the personnel demand is less (only 2 people are needed to operate the multifunctional drilling machine);
3. and (3) environmental protection: the water slag discharge is pollution-free, and the drilling of the drilling machine 200 is driven by electric power, so that the discharge pollution is avoided.
It should be understood that the above-described embodiments are merely illustrative of the preferred embodiments of the present invention and the technical principles thereof. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, these modifications are within the scope of the present invention as long as they do not depart from the spirit of the present invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims (10)

1. A multi-function drilling machine, comprising:
the mounting structure comprises a frame, a first mounting seat, a second mounting seat, a third mounting seat and a fourth mounting seat, wherein the first mounting seat, the second mounting seat and the third mounting seat are arranged at the front end of the frame at intervals along the width direction of the frame;
the two drilling machines are respectively arranged on the first mounting seat and the third mounting seat through a drilling arm;
the auxiliary tool is mounted on the second mounting seat through a working arm and comprises a drilling machine, a breaking hammer or a milling and digging head;
the hanging basket is installed on the fourth installation seat through a hanging basket arm, and a splitter can be installed in the hanging basket.
2. The multi-function drill of claim 1, wherein the drill comprises:
the speed reducer comprises a hydraulic motor and a hollow main shaft in transmission connection with the hydraulic motor, one end of the hollow main shaft is provided with a water inlet ring sleeved on the hollow main shaft, a first medium channel is arranged in the water inlet ring, the outer wall of the water inlet ring is provided with a water inlet hole communicated with the first medium channel, a plurality of second medium channels are arranged in the shaft wall of the hollow main shaft at intervals, and one ends of the second medium channels are communicated with the first medium channel;
the drilling device comprises a drilling barrel in a tubular structure and a drill bit connected with one end of the drilling barrel, one end, far away from the drill bit, of the drilling barrel is connected with one end, far away from the water inlet ring, of the hollow main shaft, a third medium channel is arranged in the pipe wall of the drilling barrel, one end of the third medium channel is located at the drill bit, and when the drilling barrel is connected with the hollow main shaft, the other end of the third medium channel is communicated with one end, far away from the first medium channel, of the second medium channel.
3. The multifunctional drilling machine according to claim 2, wherein the inner wall of the water inlet ring is annularly provided with a water tank communicated with the water inlet hole, the water tank and the outer wall of the hollow main shaft form the first medium channel therebetween, the second medium channel comprises a second medium channel main body, a plurality of first water inlets and a plurality of first water outlets which are positioned on the outer wall of the hollow main shaft and respectively communicated with the second medium channel main body, and the first water inlets are communicated with the first medium channel; the pipe wall of the drill barrel is internally provided with a plurality of third medium channels at intervals along the circumferential direction of the pipe wall, each third medium channel comprises a third medium channel main body, a second water inlet and a second water outlet, the second water inlets are communicated with the third medium channel main bodies, the second water inlets are arranged on the inner wall of the drill barrel and are positioned at one end, far away from the drill bit, of the drill barrel, the second water outlets are positioned at the drill bit, and when the drill barrel is connected with the hollow main shaft, the second water inlets are communicated with the first water outlets.
4. The multifunctional drilling machine as claimed in claim 3, wherein the hollow main shaft comprises a main shaft body and a main shaft connecting section connected with one end of the main shaft body far away from the water inlet ring, and the main shaft connecting section is provided with an external thread; the drill cylinder comprises a drill cylinder body and a drill cylinder connecting section connected with one end, far away from the drill bit, of the drill cylinder body, and the drill cylinder connecting section is provided with a threaded hole capable of being screwed with the external thread.
5. The multi-function drill of claim 4, wherein the third media passage body includes a first sub-passage at the drill-barrel connection section and a second sub-passage at the drill-barrel body, the first sub-channel includes a first sub-channel body, the second water inlet and a third water outlet communicating with the first sub-channel body, the second water inlet and the threaded hole are both positioned on the inner wall of the drill cylinder connecting section, the third water outlet is arranged on the inner wall of the drill cylinder connecting section and is adjacent to the drill bit, the second sub-passage includes a second sub-passage body, a third water inlet and the second water outlet that communicate with the second sub-passage body, the third water inlet is positioned on the inner wall of the drill cylinder body and is adjacent to one end of the drill cylinder body close to the drill cylinder connecting section, and the second water outlet is positioned at one end of the drill cylinder body close to the drill bit.
6. The multifunctional drilling machine as claimed in claim 5, wherein the drill barrel body comprises a drill barrel main body and a plurality of cover plates, the outer wall of the drill barrel main body is provided with a plurality of groove structures at intervals along the circumference of the drill barrel main body, the length of each groove structure extends along the length direction of the drill barrel main body, the cover plates are welded to the opening ends of the groove structures, and the second sub-channel main body is formed between the groove structures and the cover plates.
7. The multi-function drill of claim 2, further comprising:
the mounting base comprises a base, side plates positioned at two ends of the base, first guide rods positioned at two sides of the base and a second guide rod positioned below the first guide rods, two ends of each of the first guide rods and the second guide rods are respectively connected with one of the side plates, the speed reducer and the drill bit are respectively connected with one of the side plates, and the speed reducer is connected with the first guide rods in a sliding manner through a first sliding block;
the two first oil cylinders are mounted on the side plate close to the speed reducer at intervals and connected with the mounting shell of the speed reducer;
one end of the second oil cylinder is fixed below the base, the other end of the second oil cylinder is connected with a mounting seat positioned below the base, and the mounting seat is connected with the second guide rod in a sliding mode through a second sliding block;
and the rotary speed reducer is positioned below the base and fixedly connected with the mounting seat, and is connected with the drill boom through a connecting piece.
8. The multi-function drill of claim 1, wherein the first and second mounts are adjustable in height.
9. The multifunctional drilling machine as claimed in claim 8, wherein the first mounting seat and the second mounting seat are identical in structure, the first mounting seat comprises a first mounting plate and a second mounting plate which are arranged at intervals and a connecting plate which is arranged between the first mounting plate and the second mounting plate, the first mounting plate is fixed on the frame, the second mounting plate is movably connected with the first mounting plate through the connecting plate, and the second mounting plate is connected with a driving device which can lift the second mounting plate.
10. The multifunctional drilling machine as claimed in claim 9, wherein the number of the connecting plates is two, two of the connecting plates are arranged in parallel and inclined up and down, one end of each connecting plate is pivoted with the first mounting plate through a pivoting shaft, the other end of each connecting plate is pivoted with the second mounting plate through a pivoting shaft, a first connecting piece and a second connecting piece are arranged on one side of the second mounting plate away from the first mounting plate 121 from top to bottom at intervals, the first connecting piece is connected with the drill boom, the driving device is a hydraulic oil cylinder arranged on the frame and close to one end of the drilling machine, and the hydraulic oil cylinder is located below the second connecting piece and connected with the second connecting piece.
CN201921237338.3U 2019-08-01 2019-08-01 Multifunctional drilling machine Active CN210217619U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111456625A (en) * 2020-04-14 2020-07-28 杨城茏 Back slag-discharging type horizontal circular seam drilling tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111456625A (en) * 2020-04-14 2020-07-28 杨城茏 Back slag-discharging type horizontal circular seam drilling tool

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