CN201003400Y - Cantilevered type coal roadway driller - Google Patents
Cantilevered type coal roadway driller Download PDFInfo
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- CN201003400Y CN201003400Y CNU2006200400908U CN200620040090U CN201003400Y CN 201003400 Y CN201003400 Y CN 201003400Y CN U2006200400908 U CNU2006200400908 U CN U2006200400908U CN 200620040090 U CN200620040090 U CN 200620040090U CN 201003400 Y CN201003400 Y CN 201003400Y
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- 239000003245 coal Substances 0.000 title abstract description 48
- 230000007246 mechanism Effects 0.000 claims abstract description 83
- 238000005520 cutting process Methods 0.000 claims abstract description 47
- 238000005553 drilling Methods 0.000 claims abstract description 21
- 239000002828 fuel tank Substances 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 7
- 235000014121 butter Nutrition 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
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- 238000004519 manufacturing process Methods 0.000 abstract description 21
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- 239000002817 coal dust Substances 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
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- 238000012827 research and development Methods 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
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- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
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- 239000006028 limestone Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- 238000007619 statistical method Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to a cantilevered drill used in the coal well, comprising a cutting mechanism, a drill mechanism, a walking mechanism, a loader mechanism, a hydraulic and an electrical control systems, a machine body and a connecting mechanism; the mechanisms are working together, and the power element of the hydraulic and the electrical control systems are connected with the rotation mechanism of the machine. The utility model is simple in structure, reliable in performance, small in size, light in weight and convenient in transportation; and the utility model is applicable in the narrow small size well with low gas capacity, low smut and low coal drift for mechanical operation, in particular suitable for the rapid drilling in the coal drift and in the geological condition of chicken-room coal or triangle coal roof and so on; the utility model can increase the efficiency at 100 percent, and full increase the benefit of coal mine and improve the production security. The application of the utility model can bring considerable economic benefit and social benefit.
Description
Technical field
The utility model relates to a kind of colliery with machinery, particularly relates to a kind of Cantilevered tunnelling road-header.
Background technology
Variation along with international situation, particularly beautiful, between her undying war numerous and disorderly, the oil demand breach progressively strengthens, oil price is high, various countries pay close attention to more to the energy security problem, the numerous and confused energy strategy of adjusting increases the exploitation to national coal resources, strengthens the guarantee of coal to energy supply.According to the International Energy Agency prediction, following 30 years, countries in the world will increase by 50% to the total demand of coal, and wherein China will increase by 90%.According to " national consumption of coal status investigation and forecasting research " prediction, national consumption of coal demand was about 18～2,000,000,000 tons in 2005,2010 about 30～3,500,000,000 tons.The existing Coal Economy recoverable reserves of China is 1,145 hundred million t, promotes the production development and the technological progress of coal industry, guarantees that capacity, cleaning and safe energy supply are of great significance to guaranteeing development and national economy and even the stable of international energy market.
Through for many years technology transfer, digest and assimilate and autonomous innovation, China has developed multiple combining and has adopted, combined the pick packaged technical equipment, portioned product (technology) has been reached the international leading level or advanced level.According to China's coal-mine mechanization condition of production annual report in 2004, this, comprehensive mining machinery degree in emphasis colliery reached 68.65% in year, state-owned emphasis colliery driving total footage 627.38 myriametres are wherein combined pick total footage 134.37 myriametres, combine the pick degree and only account for 21.42%.
Along with recovery, the fast development of coal industry in recent years, coal production is climbed to a higher point successively, and supply falls short of demand, and boom-type roadheader develops towards the direction of high-power, large-tonnage, large volume.According to incompletely statistics, coal production was nearly 2,000,000,000 tons in 2004, wherein the output of local small-size coal mine accounts for 30%, economic development to China plays a part very important, but the safety in production drawback of small-size coal mine is serious, and the big gun that the small-size coal mine more than 90% still adopts is original, fall behind is adopted, the production of big gun tunneling process, and year death toll is up to people more than 3000, its basic reason is backward in technique, and managerial confusion, personnel's total quality is lower.Although the heading equipment of China has developed into certain level, bulky, complex structure does not fit into working condition and operating environment under the real well of small-size coal mine.Face the great market demand of the small-size coal mine of the whole nation more than 10,000 families, the multifunctional cantilever tunnelling machine of researching and developing a kind of small-sized, simple in structure, dependable performance, easy operating will produce tremendous influence to the coal industry mechanization level of China, also will alleviate working strength of workers greatly, improve the condition of work of down-hole, for Safety of Coal Mine Production provides strong guarantee.
Road heading machinery is mainly used in the tunnelling in mine and the underground construction.Compare with traditional blasting procedure, it is fast to have a driving speed, laneway molding and good stability, and the amount of backbreaking is little, is beneficial to supporting, and engineering quantity is little, and labour intensity is low, advantages such as production safety.
1, the domestic and international state of the art
Since 1870, the actual for the first time in the world development machine that uses the band rotary executing agency of pick (structure in mark's base), since 1600 meters in white bad land limestone galleries is tunneled in the English Channel, development machine working system (being the mechanical work method) becomes the once huge technological progress of tunnelling technology, is subjected to people's great attention.Yet the extensive development work of the development machine of various types up to twentieth century end of the fifties, the beginning of the sixties, is just rapidly launched in the whole nation, and the technical development of boom-type roadheader has become the main facility of developing coal and alternate heading so far.
First typical cantilevered tunnelling machine, start from the F2 type of Hungary's manufacturing in 1949, the former Soviet Union formulated ∏ k-3 type on the basis of Hungary F4, F5 in 1956, development to the development machine technology has played deep impetus, hereafter, the world each mainly mine country as Russia, Britain, Germany, Austria, China, Japan constantly develop the machine of various types and specification, lasting five more than ten years and not waning.
Present domestic coal road and half coal petrography (f≤8) lane development machine technology comparative maturity, product of the same type outside fully can subrogate country, but the development machine technical data statistical analysis that present home and abroad is mainly used, machine weight is all more than 20 tons, it is maximum that machine is heavy has reached 100 tons, cut power reaches 300kW, and the unit overall dimensions is huger, does not adapt to the actual production conditions in China moulded coal of wife and children more than 10,000 ore deposit.
Through investigation and online enquiries, machine heavily is controlled at below 6 tons, overall dimensions (length * wide * height) is controlled in 6 meters * 1 meter * 1.4 meters, cantilevered tunnelling machine with probing water and gas function, also be in blank at home and abroad, also be that this R﹠D work in 2004 is at the early-stage at home, be based on domestic small-size coal mine vast market demand.
2, the defective of prior art
From the policy of present country to Safety of Coal Mine Production and mineral resources, reasonable, the development and use fully of Safety of Coal Mine Production and mineral resources are domestic long-term strategic tasks.According to updated statistics, the small-size coal mine that the whole nation has the exploitation qualification has family more than 10,000, and only the existing small-size coal mine in Shanxi Province just has family more than 4500, the production of mine is still most of adopts big gun to adopt, mechanized operation level is very low, and labour intensity is big, and unsafe factor is a lot of.
For the state-owned large-scale colliery of geological structure more complicated, all there is a large amount of corner coals in the down-hole, and as production practice routinely, cost is very high, and production efficiency is low, often abandons in flakes, has reduced coefficient of mining, causes the waste of mineral resources.
More than the existence of unreasonable situation, be since both at home and abroad the driving unit of research and development all be high-power, large-tonnage, only be adapted to the production in large-scale colliery.And middle and small scale coal mine accounts for more than 70% of national colliery, well head is little, the tunnel short narrow, the hanging device tonnage is little, big driving unit can't be delivered to work plane at all.In addition, the rig that use the down-hole also is very heavy, moves very inconvenient.
Summary of the invention
The purpose of this utility model is exactly to provide Cantilevered tunnelling road-header a kind of suitable small-size coal mine, that cut is wide, pick brill one for the defective that overcomes above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions: a kind of Cantilevered tunnelling road-header, it is characterized in that, comprise cutting mechanism, drilling mechanism, walking mechanism, loader mechanism, hydraulic control and electrical control system, fuselage, bindiny mechanism, the allotment of described drilling machine by each mechanism interconnected by the executive component and the mechanical transmission mechanism of hydraulic control system, electrical control system; Described cutting mechanism comprises cutting head, cutting propelling plant, telescopic arm, hoist cylinder, angling cylinder, telescopic oil cylinder, external spraying device, described cutting propelling plant comprises hydraulic motor and reducer, described cutting head is spiral heading end, be equipped with many on it the carbide alloy pick, the cutting head of described cutting mechanism changes drill bit into and promptly forms drilling mechanism, and the cutting head of described cutting mechanism, the drill bit of drilling mechanism all are connected with telescopic arm respectively by bindiny mechanism.
Described walking mechanism comprises that left lateral is walked mechanism and right lateral is walked mechanism, described left lateral is walked mechanism and right lateral and is walked mechanism and comprise butter cylinder tensioning apparatus, thrust wheel, crawler belt, track frame, upper track wheel, guide wheel, drive sprocket and Power Drive Unit respectively, and links into an integrated entity by high-strength bolt and pumping plant respectively.
Described hydraulic control and electrical control system comprise hydraulic control system, electrical control system, this hydraulic control system is the open loop system, comprise hydraulic cylinder control loop, the walking mechanism control loop, the cutting mechanism control loop, this hydraulic control system comprises two electric machine assemblies, reversal valve group assembly, console, fuel tank, water-cooling apparatus, the oil suction oil filter, the oil return oil filter, motor and oil cylinder, fluid pressure line, described fuel tank passes through bolt, bearing pin, oil cylinder respectively with left and right sides walking mechanism, cutting mechanism, loader mechanism, each big parts such as transport establishment are connected, described water-cooling apparatus is arranged in fuel tank internal, described console is placed on the left back portion of unit, two multiple directional control valves are arranged in the front portion of pumping plant, are connected by soft shaft control device between operating grip and the reversal valve group.
Described electrical control system comprises mine explosion-suppression and intrinsic safety type control cabinet, Electric Machine at Pumping Station, illuminating lamp, the anxious knob that stops.
Adopt the produced a kind of Cantilevered tunnelling road-header of above technical scheme, simple in structure, dependable performance, volume is little, in light weight, convenient transportation, be applicable to full coal road, present low gas, low coal dust, the tunnel is short, the tunnelling machinery equalization of narrow small mine, particularly be applicable to speedy drivage and " the triangle coal " of full coal preparatory working, the exploitation of geological conditionss such as " wandering coal seams ", make production efficiency improve more than 100%, can improve the comprehensive benefit in colliery comprehensively and improve safety production condition, enforcement of the present utility model will bring very considerable economic and social benefit.
Description of drawings
Fig. 1 is the structural representation of a kind of Cantilevered tunnelling road-header of the utility model;
Wherein: 1-cutting mechanism, 2-drilling mechanism, 3-walking mechanism, 4-loader mechanism, 5-hydraulic control and electrical control system, 6-fuselage, 7-bindiny mechanism, 8-operating mechanism.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Present embodiment integrates brokenly the coal driving, water two big functions are visited in boring.When water is visited in needs boring, the cutting head dismounting down, change a cover drilling equipment that can be connected with the drilling rod facility, the spy water of can holing is simplified technological process greatly, increases work efficiency, and alleviates working strength of workers.
As shown in Figure 1, the present embodiment drilling machine mainly by cutting 1 or creep into 2, walking 3, load that 4 three great institutions and hydraulic pressure are electric 5, systems such as fuselage 6, bindiny mechanism 7 and operating mechanism 8 form, coordination and cooperation by each several part, finally realize the action of defined, finish the entire job process by hydraulic pressure, electric executive component and mechanical transmission mechanism.Do general introduction simply with regard to each major part below.
1, cutting, drilling mechanism
Cutting mechanism mainly partly is made up of cutting head, cutting propelling plant, interior telescopic arm, outer telescopic arm, telescopic oil cylinder, external spraying device etc.Cutting structure can be finished upper and lower motion under the effect of hoist cylinder, under the effect of angling cylinder, can finish left and right motion, under the effect of telescopic oil cylinder, can finish creeping into of cutterhead, cutting propelling plant is made up of hydraulic motor and reducer, give cutting head with transmission of power, finish the rotary work of cutting head, cutting head is spiral heading end, be equipped with on it many carbide alloy pick, thereby can cut go out the section of arbitrary shape.In cutting, the external spraying press water comes out by the nozzle ejection that water pipe is delivered to the external spraying frame, reaches depositing dust and the purpose that prevents to produce spark.
When needs bore water spy gas, can change by cutting head, change a cover drilling equipment that can be connected with the drilling rod facility, can work as a portable drilling rig and use.
2, walking mechanism
Walking mechanism has left lateral to walk the branch that mechanism and right lateral are walked mechanism, links into an integrated entity by high-strength bolt and pumping plant respectively.Left and right sides walking mechanism is made up of many parts such as butter cylinder tensioning apparatus, thrust wheel, crawler belt, track frame, upper track wheel, guide wheel, drive sprocket and Power Drive Units respectively.
Its operating principle: to the walking reducer, directly drive drive sprocket by walking power transmission that hydraulic motor provided, realize the walking movement of drilling machine again through the engagement of crawler belt and drive sprocket.The tensioning of crawler belt is realized by butter cylinder tensioning apparatus.According to need of work, operation control system can easily realize advancing, retreating of drilling machine and about action such as turning.
3, hydraulic system
(1) hydraulic system principle
The hydraulic system of this machine is an open circuit, and the system works medium is the N68 antiwear hydraulic oil.
Hydraulic system is by two duplicate gear oil pump feeds, and the duplicate gear pump type is respectively CBJ25-F12/F12, CBJ25-F10/F10, and two duplex gear pump are driven separately by the ventilated machine of 30kW and 15kW respectively.Four road pressure oil rated pressures of output are set up 21MPa, offer left and right sides walking mechanism, cutting mechanism and cylinder device.
(2) control mode
Control mode is manually control, and the hydraulic operation platform is placed on the left back portion of unit, and two multiple directional control valves are arranged in the front portion of pumping plant, is connected the realization Long-distance Control by soft shaft control device between operating grip and the reversal valve group.Both arranged simply, reliably, very be convenient to maintenance and dismounting again.
(3) composition of hydraulic system
Hydraulic system is made up of electric machine assembly, reversal valve group assembly, console, fuel tank, water-cooling apparatus, oil suction oil filter, oil return oil filter, each executive component (motor and oil cylinder) and fluid pressure line etc.
Fuel tank is the maincenter of whole unit, being the container of hydraulic oil, also is the mainframe of unit simultaneously, is connected with each big parts such as left and right sides walking mechanism, cutting mechanism, loader mechanism, transport establishments respectively by bolt, bearing pin, oil cylinder, compact conformation, rationally distributed.
Water-cooling apparatus is arranged in fuel tank internal, guarantees that from structure the cooling contact area is big to hydraulic oil circulation cooling, good cooling results, and the cooling water of outflow forms external spraying from the ejection of external spraying device.
Two electric machine assemblies are placed on the top and arranged on left and right sides of fuel tank, and each electric machine assembly is made up of fire-proof motor, shaft coupling, duplex gear pump, are the sources of whole unit hydraulic system power.
(4) hydraulic circuit
1) cylinder circuit
Power is preceding ten pumps in the duplex gear pump in the left electric machine assembly, this duplex gear pump is by the oil suction from fuel tank of oil suction oil filter, the pressure oil of preceding ten pumps output enters in the 5-linked multiple directional control valve group of left side by hard tube, and per three six way reversing valve functions are basic identical.When reversal valve group during at meta, the pressure oil of two ten pumps interflow oil sump tank.The action of the oscillating oil cylinder of the hoist cylinder of the bottom tetrad difference Cutting Control mechanism in the 5-linked multiple directional control valve group, the telescopic oil cylinder of cutting mechanism, cutting mechanism and the lift cylinder of loader mechanism.
2) left and right walking mechanism loop
Power source is the CBJ25-F12/F12 duplex gear pump in the right electric machine assembly, the pressure oil of preceding 12 pumps output enters in the 5-linked multiple directional control valve group of right side by hard tube, top first reversal valve control left lateral is walked the forward and backward of the big discharge capacity oil motor in the mechanism loop, the pressure oil of back 12 pumps output enters in the 5-linked multiple directional control valve group of right side by hard tube, bottom first reversal valve control right lateral is walked the forward and backward of the big discharge capacity oil motor in the mechanism loop, thereby realizes the transfer of the front, rear, left and right of unit.
3) cutting mechanism loop
Power source is the CBJ25-F12/F12 duplex gear pump in the right electric machine assembly, the pressure oil of former and later two 12 pump outputs enters in the 5-linked multiple directional control valve group of right side by hard tube and collaborates, the action of the middle reversal valve Cutting Control oil motor by 5-linked multiple directional control valve group, this reversal valve is a two-position valve, only the Cutting Control oil motor direction.
4, electrical system
The electrical system equipment of this machine mainly is made up of mine explosion-suppression and intrinsic safety type control cabinet, Electric Machine at Pumping Station, illuminating lamp, the anxious knob etc. of stopping, and major loop adopts 380V or 660V power supply, lighting loop 36V.Control panel can be used for that methane is arranged, in the mine of explosive coal dust, drilling machine is played effects such as control, protection, demonstration, illumination.
Make every effort to simple and reliable on the Cantilevered tunnelling road-header structure, use the design guidance being convenient to keep in repair in principle simple, discarded at present in, some dispensable 26S Proteasome Structure and Functions on the heavy development machine.On each mechanism's transmission of power, the reducing gear that just omits complexity that can directly directly drive with big oil motor, rich degree is amplified in the place that must use the reducing gear device on performance parameter is selected, select ripe deceleration device as far as possible for use, the dependable performance consideration of giving top priority.
Coal road bores development machine to be according to the actual digging working condition research and development of medium and small mine, to promote and use successful equipment.This machine dependable performance, simple in structure, volume is little, in light weight, convenient transportation, is applicable to the exploitation of geological conditionss such as the speedy drivage of full coal preparatory working and " triangle coal ", " wandering coal seam ".
This product is used for the driving and the coal mining of coal mine roadway, and the tunnelling machinery equalization of the small mine that be applicable to full coal road, present low gas, hang down coal dust, the tunnel is short, narrow is filled up domestic and international blank.
Select for use coal road drilling machine production efficiency to improve more than 100%, improve the comprehensive benefit in colliery comprehensively and improve safety production condition, one brings very considerable economic and social benefit surely.
Claims (4)
1. Cantilevered tunnelling road-header, it is characterized in that, comprise cutting mechanism, drilling mechanism, walking mechanism, loader mechanism, hydraulic control and electrical control system, fuselage, bindiny mechanism, the allotment of described drilling machine by each mechanism interconnected by the executive component and the mechanical transmission mechanism of hydraulic control system, electrical control system; Described cutting mechanism comprises cutting head, cutting propelling plant, telescopic arm, hoist cylinder, angling cylinder, telescopic oil cylinder, external spraying device, described cutting propelling plant comprises hydraulic motor and reducer, described cutting head is spiral heading end, be equipped with many on it the carbide alloy pick, the cutting head of described cutting mechanism changes drill bit into and promptly forms drilling mechanism, and the cutting head of described cutting mechanism, the drill bit of drilling mechanism all are connected with telescopic arm respectively by bindiny mechanism.
2. a kind of Cantilevered tunnelling road-header according to claim 1, it is characterized in that, described walking mechanism comprises that left lateral is walked mechanism and right lateral is walked mechanism, described left lateral is walked mechanism and right lateral and is walked mechanism and comprise butter cylinder tensioning apparatus, thrust wheel, crawler belt, track frame, upper track wheel, guide wheel, drive sprocket and Power Drive Unit respectively, and links into an integrated entity by high-strength bolt and pumping plant respectively.
3. a kind of Cantilevered tunnelling road-header according to claim 1, it is characterized in that, described hydraulic control and electrical control system comprise hydraulic control system, electrical control system, this hydraulic control system is the open loop system, comprise hydraulic cylinder control loop, the walking mechanism control loop, the cutting mechanism control loop, this hydraulic control system comprises two electric machine assemblies, reversal valve group assembly, console, fuel tank, water-cooling apparatus, the oil suction oil filter, the oil return oil filter, motor and oil cylinder, fluid pressure line, described fuel tank passes through bolt, bearing pin, oil cylinder respectively with left and right sides walking mechanism, cutting mechanism, loader mechanism, each big parts such as transport establishment are connected, described water-cooling apparatus is arranged in fuel tank internal, described console is placed on the left back portion of unit, two multiple directional control valves are arranged in the front portion of pumping plant, are connected by soft shaft control device between operating grip and the reversal valve group.
4. a kind of Cantilevered tunnelling road-header according to claim 3 is characterized in that described electrical control system comprises mine explosion-suppression and intrinsic safety type control cabinet, Electric Machine at Pumping Station, illuminating lamp, scram button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200400908U CN201003400Y (en) | 2006-03-10 | 2006-03-10 | Cantilevered type coal roadway driller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200400908U CN201003400Y (en) | 2006-03-10 | 2006-03-10 | Cantilevered type coal roadway driller |
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| Publication Number | Publication Date |
|---|---|
| CN201003400Y true CN201003400Y (en) | 2008-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200400908U Expired - Fee Related CN201003400Y (en) | 2006-03-10 | 2006-03-10 | Cantilevered type coal roadway driller |
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| Country | Link |
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| CN (1) | CN201003400Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798925A (en) * | 2010-03-18 | 2010-08-11 | 闫振东 | Cutting head type shortwall coal-winning machine and comprehensive mechanized coal mining technology |
| CN102206997A (en) * | 2010-03-15 | 2011-10-05 | 桑德威克采矿和建筑有限责任公司 | Heading machine |
| CN102767370A (en) * | 2012-07-03 | 2012-11-07 | 合肥科振实业发展有限公司 | Integrated high-pressure abrasive jet joint-cutting and drilling coal seam tunnel boring machine |
| CN110080790A (en) * | 2019-04-03 | 2019-08-02 | 中船第九设计研究院工程有限公司 | A kind of boom-type roadheader excavated for tunnel |
-
2006
- 2006-03-10 CN CNU2006200400908U patent/CN201003400Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206997A (en) * | 2010-03-15 | 2011-10-05 | 桑德威克采矿和建筑有限责任公司 | Heading machine |
| CN101798925A (en) * | 2010-03-18 | 2010-08-11 | 闫振东 | Cutting head type shortwall coal-winning machine and comprehensive mechanized coal mining technology |
| CN101798925B (en) * | 2010-03-18 | 2013-04-03 | 闫振东 | Cutting head type shortwall coal-winning machine and comprehensive mechanized coal mining technology |
| CN102767370A (en) * | 2012-07-03 | 2012-11-07 | 合肥科振实业发展有限公司 | Integrated high-pressure abrasive jet joint-cutting and drilling coal seam tunnel boring machine |
| CN110080790A (en) * | 2019-04-03 | 2019-08-02 | 中船第九设计研究院工程有限公司 | A kind of boom-type roadheader excavated for tunnel |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI WANXIE ELECTROMECHANICAL TECHNOLOGY CO., Free format text: FORMER OWNER: ZHAI JUN Effective date: 20090731 |
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Effective date of registration: 20090731 Address after: Shanghai City Deli Jiading District Nanxiang Town Road No. 128 Building 1 room 101, zip code: 201802 Patentee after: Shanghai Sino3m Electromechanical Technology Co., Ltd. Address before: Shanghai City 440 Gumei Road No. 21, Room 102, zip code: 201102 Patentee before: Di Jun |
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