CN202338201U - Vibration extrusion type drilling machine - Google Patents

Vibration extrusion type drilling machine Download PDF

Info

Publication number
CN202338201U
CN202338201U CN2011204897304U CN201120489730U CN202338201U CN 202338201 U CN202338201 U CN 202338201U CN 2011204897304 U CN2011204897304 U CN 2011204897304U CN 201120489730 U CN201120489730 U CN 201120489730U CN 202338201 U CN202338201 U CN 202338201U
Authority
CN
China
Prior art keywords
vibration
oil cylinder
eccentric
drilling rod
squash type
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2011204897304U
Other languages
Chinese (zh)
Inventor
阮珍
唐忠盛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN2011204897304U priority Critical patent/CN202338201U/en
Application granted granted Critical
Publication of CN202338201U publication Critical patent/CN202338201U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Earth Drilling (AREA)

Abstract

The utility model discloses a vibration extrusion type drilling machine, which comprises a chassis mechanism and a drilling mechanism, wherein the chassis mechanism consists of a machine body, a traveling mechanism, a driving cab, an engine, a large arm and a small arm. The drilling mechanism is structurally characterized in that: one side of a propulsion beam is in sliding fit connection with a carriage beam; a compensation oil cylinder which is hinged with the propulsion beam is arranged on the carriage beam; the carriage beam, a connection seat and an angle regulating oil cylinder are hinged; the other end of the angle regulating oil cylinder is hinged with the connection seat; the other side of the propulsion beam is in sliding fit connection with a machine head seat which is provided with a vibration mechanism and a rotary mechanism; a propulsion oil cylinder on the propulsion beam is connected with the machine head seat through a propulsion mechanism; a drill rod sleeve is arranged below the vibration mechanism and connected with the rotary mechanism; the lower part of a drill rod penetrates through a clamping rod device and is connected with an extrusion head; and the small arm of the chassis mechanism is fixedly connected with the connection seat of the drilling mechanism. Compared with the conventional drilling technology, the vibration extrusion type drilling machine has the advantages of high efficiency, low energy consumption, environment friendliness, firmness of a formed hole, and the like.

Description

Vibration squash type auger
Technical field
The utility model relates to a kind of rig, specifically is a kind of vibration squash type auger.
Background technology
At present Drilling well hole, the small-sized basic hole of building, equipment such as hot hole, lightning protection boring mainly contain rotary drill, impact drill and combinationdrill three major types.
Rotary drill relies on gyration kata-rocks soil layer and the pore-forming of drilling tool.Adopt water to blow out ground, have greater environmental impacts towards positive and negative endless form discharge mud or compressed air.
Impact drill leans on the up-and-down movement of drilling tool, makes the drill bit impact shaft bottom with the kata-rocks soil layer, gets slag with the scarfing cinder bucket again.It is simple in structure, but does not have the circulation well cleanup system, but the removing of landwaste and rig can not carry out simultaneously, thereby work efficiency is lower.
Combinationdrill is the water drilling rig that combines and creep into gyroscopic action impacting, and like the pneumatic down hole hammer rig etc., adopts compressed air to blow out the ground slag.Its rate of penetration is high, but the very big air compressor machine driving of air requirement just can fulfil assignment, so oil consumption is very high.
In sum, the current rig that uses on the market exist effect low, to environment pollute, shortcoming such as energy consumption height.
The utility model content
The utility model technical problem to be solved provides that a kind of efficient is high, energy consumption is low, the vibration squash type auger of environmentally safe.
The utility model solves the problems of the technologies described above with following technical scheme:
The utility model vibration squash type auger comprises body chassis and borehole drill construction, said body chassis by body, be installed in the body below walking mechanism, driver's cabin on the body, motor be installed and constituted by the big arm and the forearm of HYDRAULIC CONTROL SYSTEM; Said borehole drill construction mainly is made up of forward beam, balladeur train beam, Connection Block, vibrating mechanism, rotating mechanism, drilling rod and extrusion head; One side of forward beam and the sliding connection of balladeur train beam; On the balladeur train beam compensating cylinder is housed; The expansion link and the forward beam of compensating cylinder are hinged, and the balladeur train beam is hinged with the expansion link of Connection Block that supporting leg is housed and angular adjustment oil cylinder, and the other end and the Connection Block of angular adjustment oil cylinder are hinged; The opposite side of forward beam and the headstock sliding connection that vibrating mechanism and rotating mechanism are installed; Be equipped with on the forward beam and advance oil cylinder and clamping bar device; Advancing oil cylinder to form with headstock through propulsive mechanism is connected; The below of vibrating mechanism is equipped with the drilling rod cover that is used for jointed rod, and the drilling rod cover forms with rotating mechanism and is connected, and the bottom of drilling rod is connected with extrusion head after passing the clamping bar device; The forearm of body chassis is fixedly connected with the Connection Block of borehole drill construction.
Said extrusion head is replaced by the bucket that fetches earth, and the inside of the bucket that fetches earth is provided with active clapboard, and the sawtooth mouth is arranged at the bottom.
Said extrusion head also can be replaced by rock drill bit, and the upper outside of rock drill bit is provided with the collection inder pot, and the bottom is a pyramidal structure, and is provided with brill tooth 41 and helicla flute 42, and helicla flute 42 communicates with collection inder pot 43.
Said vibrating mechanism adopts at least one group of eccentric wheel vibrating mechanism; Its involving vibrations casing, vibrating motor and at least one group of eccentric group; Every group of eccentric group is to be made up of two eccentric shafts that eccentric block and eccentric gear are housed respectively; Be meshing with each other between the eccentric gear, wherein an eccentric shaft is driven by vibrating motor; The vibration casing connects with guide pillar on being installed in headstock through shock-absorbing spring, passes through thrust bearing jointed rod cover below it.
Vibration casing 30 also can adopt rubber spring to link to each other with headstock 12, and rubber spring is installed in the vibrating bin body side surface, through the cut mode vibration damping.
Said rotating mechanism is made up of rotation motor and gear-box, and the gear in the gear-box forms through spline fitted with the drilling rod cover and is connected.
Said propulsive mechanism is to adopt the wire rope propulsive mechanism, and the pulley up and down of wire rope propulsive mechanism is connected with the two ends that advance oil cylinder respectively, and the wire rope on the pulley is connected with headstock up and down.
Said propulsive mechanism also can be to adopt the motor chain drive-belt to drive the structure that headstock moves up and down.
Said drilling rod is with thread connecting mode jointed rod cover and extrusion head, and its quantity is provided with many as required.
The utility model is compared with existing drilling technique, has that efficient height, energy consumption are low, a clear superiority such as environmentally safe, pore-forming are solid.Can be widely used in well boring, the boring of construction work pile foundation, draining suction eye, fields such as hot hole, lightning protection boring.What the utility model rig was different with current all rigs is, it does not need deslagging, but through adopting the boring of vibration fashion of extrusion, easy to operate, automated procedures are high, and the hole wall that obtains is solid firmly, is difficult for the hole of collapsing.
Description of drawings:
Fig. 1 is the overall structure sketch map of the utility model.
Fig. 2 is the structural representation of the borehole drill construction of the utility model employing.
Fig. 3 is the structural representation that is installed in the associated components on the headstock among Fig. 2.
Fig. 4 is the structural representation that is used for replacing the bucket that fetches earth of extrusion head.
Fig. 5 be used for replacing extrusion head the structural representation of rock drill bit.
Among the figure:
1, body chassis 2, borehole drill construction 3, body
4, driver's cabin 5, motor 6, hydraulic system
7, walking mechanism 8, big arm 9, forearm
10, vibrating mechanism 11, rotating mechanism 12, headstock
13, drilling rod cover 14, thrust bearing 15, drilling rod
16, clamping bar device 17, extrusion head 18, forward beam
19, advance oil cylinder 20, wire rope propulsive mechanism 21, balladeur train beam
22, compensating cylinder 23, angular adjustment oil cylinder 24, Connection Block
25, feet 30, vibration casing 31, vibrating motor
32, eccentric group 33, eccentric shaft 34, guide pillar
35, shock-absorbing spring 36, rotation motor 37, gear-box
38, fetch earth bucket 39, active clapboard 40, rock drill bit
41, spherical tooth 42, helicla flute 43, the collection inder pot of boring
The specific embodiment:
Consult Fig. 1, the utility model is made up of body chassis 1 and borehole drill construction 2.Body chassis 1 mainly is made up of body 3, driver's cabin 4, motor 5, hydraulic system 6, walking mechanism 7, big arm 8, forearm 9 etc.; Driver's cabin 4, motor 5, hydraulic system 6, big arm 8 and forearm 9 are installed on the body 3; Walking mechanism 7 is installed in body 3 belows, and big arm 8 is controlled by hydraulic system 6 with forearm 9.The utility model also can adopt crawler belt or the wheeled hydraulic excavator body chassis as the utility model.
Fig. 2 is the structural representation of borehole drill construction 2.Borehole drill construction 2 mainly is made up of forward beam 18, balladeur train beam 21, Connection Block 24, vibrating mechanism 10, rotating mechanism 11, drilling rod 15 and extrusion head 17; One side of forward beam 18 forms sliding connection through sliding pair and balladeur train beam 21; Compensating cylinder 22 is housed on the balladeur train beam 21; The expansion link of compensating cylinder 22 and forward beam 18 are hinged, and compensating cylinder 22 removable forward beams 18 carry out the adjustment of upper-lower position.Balladeur train beam 21 is hinged with the expansion link of Connection Block 24 and angular adjustment oil cylinder 23; The forearm 9 of Connection Block 24 and body chassis 1 be fixedly connected; The other end of angular adjustment oil cylinder 23 and Connection Block 24 are hinged, through the angle of the whole borehole drill construction of angular adjustment oil cylinder 23 scalable; The opposite side of forward beam 18 forms sliding connection through the guide rail mode is set with the headstock that vibrating mechanism 10 and rotating mechanism 11 are installed 12; Be equipped with on the forward beam 18 and advance oil cylinder 19 and clamping bar device 16; Advancing oil cylinder 19 to form with headstock 12 through wire rope propulsive mechanism 20 is connected; The pulley up and down of wire rope propulsive mechanism 20 is connected with the two ends that advance oil cylinder 19 respectively; Wire rope on the pulley is connected with headstock 12 up and down, and wire rope propulsive mechanism 20 can make vibrating mechanism 10 be with drilling rod 15 to slide up and down along forward beam 18, accomplishes and creeps into and move back bar work.The structure replacement that wire rope propulsive mechanism 20 also can adopt the motor chain drive-belt to move up and down to drive headstock.
As shown in Figure 3; Vibrating mechanism 10 can adopt one Chinese patent application number to be called " a kind of impact type hydraulic gate " related beater mechanism (being vibrating mechanism) for " 201010596120.4 ", utility model name; It is made up of one or more groups eccentric wheel vibrating mechanism; Involving vibrations casing 30, vibrating motor 31 and at least one group of eccentric group 32; Every group of eccentric group is to be made up of two eccentric shafts 33 that eccentric block and eccentric gear are housed respectively, is meshing with each other between the eccentric gear, and wherein an eccentric shaft is driven by vibrating motor 31; Vibration casing 30 connects with guide pillar 34 through shock-absorbing spring 35; Its below is equipped with the drilling rod cover 13 that is used for jointed rod 15 through thrust bearing 14; Drilling rod cover 13 forms with rotating mechanism 11 and is connected, and the bottom of drilling rod 15 is passed clamping bar device 16 backs and is connected with extrusion head 17.Rotating mechanism 11 is made up of rotation motor 36 and gear-box 37, and the gear in the gear-box 37 forms through spline fitted with drilling rod cover 13 and is connected.Rotating mechanism 11 is installed on the headstock 12 with vibrating mechanism 10, and drilling rod 15 is connected on the drilling rod cover 13 with thread connecting mode, and its other end connects extrusion head 17, according to the needed degree of depth of boring, can connect the drilling rod of respective numbers.
During Vibration on Start-up mechanism 10; Vibrating motor 31 drives eccentric shaft 33 rotations, makes eccentric group 32 rotation at a high speed, and eccentric wheel eccentric force is in the horizontal direction cancelled each other in pairs; Power stack in vertical direction; Thereby make vibration casing 30 up-down vibration, be assemblied in drilling rod cover 13 up-down vibration together under the vibration casing 30, thereby drive drilling rod 15 and extrusion head 17 up-down vibration.Vibration casing 30 is connected on the headstock 12 through shock-absorbing spring 35 and guide pillar 34, and headstock 12 is played damping effect.
During the motion of vibrating mechanism 10 up-down vibration, 13 meetings of drilling rod cover are along with motion together, and rotating mechanism 11 is driven when rotating by rotation motor 36, through the gear internal spline of gear-box 37, also can drive drilling rod cover 13 and be rotated motion.
Balladeur train beam 21 is hinged with Connection Block 24, and Connection Block 24 joins through big arm 8 and forearm 9 and body chassis 1.Be convenient location, Connection Block 24 is provided with feet 25.
When holing, to run into hard especially soil layer or rock stratum in order tackling, to solve extrusion head 17 and can't get into problem, the utility model has also disposed fetch earth bucket 38 and rock drill bit 40.Bucket 38 the inside of fetching earth is provided with active clapboard 39, and the sawtooth mouth is arranged at the bottom, and is as shown in Figure 4.The upper outside of rock drill bit 40 is provided with collection inder pot 43, and the bottom is a pyramidal structure, and is provided with spherical tooth 41 and the helicla flute 42 of boring, and helicla flute 42 communicates with collection inder pot 43, and is as shown in Figure 5.
During operation; Chassis system 1 positions with forearm 9 through big arm 8; Feet 25 is fixed on the select location; Through the scheduling of the angle on the Connection Block 24 oil cylinder 23 balladeur train beam 21 is adjusted to vertical angle, through compensating cylinder 22 forward beam 18 is moved down then, make forward beam 18 bottom supports on the ground.
Vibration on Start-up mechanism 10; Advancing oil cylinder 19 to promote headstock 12 through wire rope propulsive mechanism 20 simultaneously moves downward; Vibrating mechanism 10 is clamp-oned downwards in the soil with the extrusion head that is in vibrational state 17, and after soil received forced vibration, its internal friction reduced; Intensity reduces, thereby extrusion head 17 is easily squeezed in the soil.After advancing oil cylinder 19 to advance extrusion head 17 to cover a bar drill pole length; Clamping bar device 16 is clamped drilling rod 15, and rotating mechanism 11 counter-rotatings break away from drilling rod cover 13 and drilling rod 15, advance oil cylinder 19 that headstock 12 is promoted; After connecting a new drilling rod; Rotating mechanism 11 is just changeing makes the connection of drilling rod two fastening, opens vibrating mechanism 10 then, makes extrusion head 17 continue vibro-drillings.After reaching the required degree of depth,,, promptly accomplish bore operation with 15 taking-ups of drilling rod with carrying on the extrusion head 17.
For prevent that drilling rod 15 from getting loose in vibration work, rotating mechanism 11 can slowly just change at work, makes drilling rod 15 receive frictional resistance and keeps tightening state.
When bore operation runs into stone soil layer, when extrusion head 17 can't get into, can extrusion head 17 be pulled down and be replaced by the bucket 38 that fetches earth.Fetch earth bucket 38 when vibration is buried, middle soil is clamp-oned in the bucket, when the bucket 38 that fetches earth is up carried, opened by the native action of gravity active clapboard 39 in the bucket, thereby bar up the earth in the bucket, make it follow the bucket 38 that fetches earth to propose outside the hole together.
In bore operation, run into lithosphere, when extrusion head 17 all can't get into the bucket 38 that fetches earth, can extrusion head 17 be pulled down and be replaced by rock drill bit 40; During operation; Vibrating mechanism 10 is opened with rotating mechanism 11 simultaneously, and rock drill bit 40 rotates while impacting, with the rock impact fragmentation and make rock ballast rotate in the collection inder pot 43 at rock drill bit 40 tops along helicla flute 42; The full back of collection proposes ground and outwells, and passes through the lithosphere pore-forming thereby bore.

Claims (9)

1. vibrate the squash type auger; It is characterized in that; It comprises body chassis (1) and borehole drill construction (2), said body chassis (1) by body (3), be installed in body below walking mechanism (7), driver's cabin (4) on the body, motor (5) are installed and by the big arm (8) and forearm (9) formation of hydraulic system (6) control; Said borehole drill construction (2) mainly is made up of forward beam (18), balladeur train beam (21), Connection Block (24), vibrating mechanism (10), rotating mechanism (11), drilling rod (15) and extrusion head (17); One side of forward beam (18) and balladeur train beam (21) sliding connection; Compensating cylinder (22) is housed on the balladeur train beam (21); The expansion link of compensating cylinder (22) and forward beam (18) are hinged; Balladeur train beam (21) is hinged with the expansion link of Connection Block (24) that supporting leg (25) are housed and angular adjustment oil cylinder (23), and the other end of angular adjustment oil cylinder (23) and Connection Block (24) are hinged; The opposite side of forward beam (18) and headstock (12) sliding connection that vibrating mechanism (10) and rotating mechanism (11) are installed; Be equipped with on the forward beam (18) and advance oil cylinder (19) and clamping bar device (16); Advancing oil cylinder (19) to form with headstock (12) through propulsive mechanism (20) is connected; The below of vibrating mechanism (10) is equipped with the drilling rod cover (13) that is used for jointed rod (15); Drilling rod cover (13) forms with rotating mechanism (11) and is connected, and the bottom of drilling rod (15) is passed clamping bar device (16) back and is connected with extrusion head (17); The forearm (9) of body chassis (1) is fixedly connected with the Connection Block (24) of borehole drill construction (2).
2. vibration squash type auger according to claim 1 is characterized in that, said extrusion head (17) is replaced by the bucket (38) that fetches earth, and the inside of the bucket (38) that fetches earth is provided with active clapboard (39), and the sawtooth mouth is arranged at the bottom.
3. vibration squash type auger according to claim 1; It is characterized in that; Said extrusion head (17) is replaced by rock drill bit (40), and the upper outside of rock drill bit (40) is provided with collection inder pot (43), and the bottom is a pyramidal structure; And being provided with brill tooth (41) and helicla flute (42), helicla flute (42) communicates with collection inder pot (43).
4. vibration squash type auger according to claim 1; It is characterized in that; Said vibrating mechanism (10) adopts at least one group of eccentric wheel vibrating mechanism, its involving vibrations casing (30), vibrating motor (31) and at least one group of eccentric group (32), and every group of eccentric group is to be made up of two eccentric shafts (33) that eccentric block and eccentric gear are housed respectively; Be meshing with each other between the eccentric gear, wherein an eccentric shaft is driven by vibrating motor (31); Vibration casing (30) connects with guide pillar (34) on being installed in headstock (12) through shock-absorbing spring (35), passes through thrust bearing (14) jointed rod cover (13) below it.
5. vibration squash type auger according to claim 1 is characterized in that, said rotating mechanism (11) is made up of rotation motor (36) and gear-box (37), and the gear in the gear-box (37) is connected through spline fitted with drilling rod cover (13).
6. vibration squash type auger according to claim 1; It is characterized in that; Said propulsive mechanism (20) is to adopt the wire rope propulsive mechanism, and the pulley up and down of wire rope propulsive mechanism is connected with the two ends that advance oil cylinder (19) respectively, and the wire rope on the pulley is connected with headstock (12) up and down.
7. vibration squash type auger according to claim 1 is characterized in that, said propulsive mechanism (20) adopts the motor chain drive-belt to drive the structure that headstock (12) moves up and down.
8. vibration squash type auger according to claim 1 is characterized in that, said drilling rod (15) is with thread connecting mode jointed rod cover (13) and extrusion head (17), and its quantity is provided with many as required.
9. according to the vibration squash type auger of claim 1 art, it is characterized in that said body chassis (1) adopts crawler belt or wheeled hydraulic excavator to replace.
CN2011204897304U 2011-11-30 2011-11-30 Vibration extrusion type drilling machine Expired - Lifetime CN202338201U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204897304U CN202338201U (en) 2011-11-30 2011-11-30 Vibration extrusion type drilling machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204897304U CN202338201U (en) 2011-11-30 2011-11-30 Vibration extrusion type drilling machine

Publications (1)

Publication Number Publication Date
CN202338201U true CN202338201U (en) 2012-07-18

Family

ID=46486894

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204897304U Expired - Lifetime CN202338201U (en) 2011-11-30 2011-11-30 Vibration extrusion type drilling machine

Country Status (1)

Country Link
CN (1) CN202338201U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102409974A (en) * 2011-11-30 2012-04-11 唐忠盛 Vibration and extrusion type drilling machine
CN103643895A (en) * 2013-11-06 2014-03-19 桂林市华力重工机械有限责任公司 Crawler-type hydraulic cutting drilling machine with intelligent braking device
CN105080923A (en) * 2014-05-14 2015-11-25 青岛昱臣智能机器人有限公司 Cleaning adjusting device for photovoltaic panels
EP3236001A4 (en) * 2014-12-19 2018-04-18 Young Dug Yoon Excavation apparatus using excavator
CN108104139A (en) * 2017-12-29 2018-06-01 湖南中大经纬地热开发科技有限公司 Mining area slope retaining friction pile

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102409974A (en) * 2011-11-30 2012-04-11 唐忠盛 Vibration and extrusion type drilling machine
CN102409974B (en) * 2011-11-30 2014-06-25 唐忠盛 Vibration and extrusion type drilling machine
CN103643895A (en) * 2013-11-06 2014-03-19 桂林市华力重工机械有限责任公司 Crawler-type hydraulic cutting drilling machine with intelligent braking device
CN105080923A (en) * 2014-05-14 2015-11-25 青岛昱臣智能机器人有限公司 Cleaning adjusting device for photovoltaic panels
EP3236001A4 (en) * 2014-12-19 2018-04-18 Young Dug Yoon Excavation apparatus using excavator
CN108104139A (en) * 2017-12-29 2018-06-01 湖南中大经纬地热开发科技有限公司 Mining area slope retaining friction pile

Similar Documents

Publication Publication Date Title
CN102409974B (en) Vibration and extrusion type drilling machine
CN202338201U (en) Vibration extrusion type drilling machine
CN201495986U (en) Tracked hydraulic down-the-hole drill
CN105840110B (en) A kind of multifunctional rotary digging machine
CN101435312A (en) Multifunctional hammer drill
CN204402349U (en) Hydraulic pressure high frequency down-the-hole at the bottom of rotary pile-digging machine hole breaks rock and bores
CN104033102B (en) impact hydraulic rock drill
CN102155161A (en) Novel omnibearing drill boom of drill loader
CN202090830U (en) Multifunctional simple hydraulic drilling rig with double folded moving arms and universal hinge pair
CN104863496B (en) Hydraulic high-frequency DTH rock-breaking drill for rotary pile drill hole bottom
CN203308379U (en) Drilling machine for pile work
CN104074461A (en) Suspension type cycle shock impact project grooving machine
CN210396626U (en) CFG drilling machine
CN200955997Y (en) Soil sampling machine structure
CN205370442U (en) Drill jumbo
CN214463873U (en) High-speed drilling machine suitable for weathered rock stratum
CN201598980U (en) Full hydraulic multifunctional machine for drilling and excavation
CN203640602U (en) Pneumatic and hydraulic hybrid roadway construction drilling jumbo
CN209040760U (en) A kind of digging drills steel sharpener
CN201908565U (en) Base plate anchor rope drilling machine for coal mine tunnel
CN201943579U (en) Drill arm beam structure capable of rotating propelling beam by 360 degrees
CN202325266U (en) Mining large-dip angle cross drainage drilling machine
CN201963199U (en) Novel omnibearing drilling arm of drilling and installing machine
CN2397250Y (en) Portable hydraulic drilling machine with high efficient dust-removing series
CN102996072B (en) Multifunctional cutting drilling machine

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20120718

Effective date of abandoning: 20140625

RGAV Abandon patent right to avoid regrant