CN205605209U - Multi -functional coal seam scour protection efflux drilling joint -cutting shower nozzle - Google Patents
Multi -functional coal seam scour protection efflux drilling joint -cutting shower nozzle Download PDFInfo
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- CN205605209U CN205605209U CN201620401641.2U CN201620401641U CN205605209U CN 205605209 U CN205605209 U CN 205605209U CN 201620401641 U CN201620401641 U CN 201620401641U CN 205605209 U CN205605209 U CN 205605209U
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Abstract
The utility model relates to a multi -functional coal seam scour protection efflux drilling joint -cutting shower nozzle, including organism, running gear, power supply, hydraulic control system, strutting arrangement, flexible arm and rig and water jet system. The utility model discloses advance pit and water return hole with what the abrasive material feeder sleeve on the water jet device designed into symmetrical arrangement, block up as showerhead body and the backward flow appears, discharge through the backward flow discharge pipe of this bypass, avoid the backward flow to get into feeding system, improve cutting process's reliability and machining efficiency, rig and water jet system can greatly increase the degree of depth that the jet impulse rock formed ring type slot, increase the gas permeability in coal seam, reduce coalbed gas pressure and gas content, make outstanding coal seam fall for non - outstanding coal seam, reduce the dust in the drilling work progress, simultaneously, furthest reduces hard rock's anti cutting power, has improved ability and efficiency that the rig crept into hard rock, prolongs the life of mechanical pick, safe, the high -efficient development that has improved the coal resource.
Description
Technical field
This utility model belongs to safety of coal mines winning apparatus technical field, particularly relates to a kind of multi-functional coal seam and prevents
Rush jet drilling joint-cutting shower nozzle.
Background technology
It is effectively increased " three is soft " unstable projecting coal bed permeability coefficient, makes coal-bed gas pressure reduce, promote ground
Stress redistributes, and increases release drainage length, not only highlights preventing and treating Driving Face in Coal Tunnel and provide into worker
Safety in production ensures, can accelerate again coal roadway tunneling speed simultaneously.By high-pressure abradant jet current joint-cutting in coal seam,
Increase the exposed area of coal and projecting coal bed permeability coefficient, reduce gas pressure, promote crustal stress again
Distribution, is one of effective ways improving the discharge of " three is soft " coal-bed gas and outburst prevention measures at present.Apply in reality
In, high-pressure water jet slotting technique, it is generally required to first got hole by rig, is then entered by high-pressure water shot flow device
Row slot.Normal practice needs the equipment that two sets are independent, needs repeatedly move drilling tool and cut in technical process
Seam standby, and be likely to occur the boring deformed damaged such as Guan Bi after boring during slot and cannot the problem such as slot.With
Upper problem causes construction long for non-cutting time, and progress is slow, and efficiency is low, become affect driving speed important because of
Element.
At present, engineering high-pressure water jet is holed, the structure of joint-cutting shower nozzle mainly divides following a few class: the first kind
It is to force to rotate and self-rotating nozzle, forces rotary nozzle volume relatively big, and structure is complicated.Self-rotating nozzle,
Structure is complicated, in addition it is also necessary to speed-limiting device.This kind of shower nozzle is mainly used in the engineerings such as boats and ships rust cleaning and joint-cutting；The
Two classes are internal rotation type shower nozzles, and jet requires that pressure is high, and general device is extremely difficult to, and this kind of shower nozzle mainly should
For engineerings such as building cleaning and pipeline cleanings；3rd class is multiinjector fixed sprinkler, and pore-forming is irregular,
This kind of shower nozzle is mainly used in the engineering such as oil field boring and auxiliary driving.Generally speaking, existing nozzle structure
Complexity, function singleness, it is mainly used in petroleum works, cleans the engineering such as pipeline, boats and ships rust cleaning, for ore deposit
Mountain engineering is the most improper.
Abrasive waterjet nozzle body and sand controlling valve in existing water jet cutting mach are primarily present following
Weak point: 1, fault rate is higher, inconvenience maintenance；2, easy backwater, difficult cleaning, use trouble.3、
Part is many, complex-shaped, and manufacturing cost is high.The existence of the problems referred to above has had a strong impact on the service behaviour of complete machine
Normal performance, usually cause sand supplying fault because of backwater, and produce unnecessary shutdown, sand removal.Have influence on
The interests of user, even cause the loss that user is unnecessary.Above two big technology barriers, fail to obtain so far
Effectively solve, the most still have the space of improvement.
Summary of the invention
This utility model is slow for the existing scour-preventing jet flow drilling and joint-cutting spray head for coal bed lancing speeds of solution, coal mass relief
Effect is bad, fault rate maintenance higher, inconvenient；Or easily backwater, difficult cleaning, use the skills such as process is complicated
Art problem, to this end, a kind of multifunctional scour-preventing jet flow drilling and joint-cutting spray head for coal bed of invention.
This utility model is adopted the technical scheme that by solving technical problem present in known technology:
A kind of multifunctional scour-preventing jet flow drilling and joint-cutting spray head for coal bed includes body, running gear, power source, liquid
Pressure control system, support means, telescopic arm and rig and water jet system, the both sides of described body are provided with
Running gear, described running gear is provided with power source, and the end of described power source arranges hydraulic control system
System, the other end of described hydraulic control system connects support means, and described support means is provided above telescopic arm,
Described hydraulic control system is connected with telescopic arm, and the front end of described telescopic arm connects rig and water jet system；
Rig and water jet system include water jet device, drill bit drive mechanism and drill bit mechanism, described water
Mjector include water-jet nozzle, abrasive material mulling chamber, sprayer body, blasting by abrasives pipe, abrasive material sand-feeding tube and
The backwater outlet having on sprayer body housing, there is through hole at the center of sprayer body, and one end is high pressure intake, spray
Blasting by abrasives pipe is installed, by clamp nut by described blasting by abrasives in the centre bore of the other end of head body
Pipe is connected with sprayer body；Water jet nozzle is positioned at the high pressure intake of sprayer body；At water jet nozzle and mill
Sprayer body endoporus between material blast tube is formed abrasive material mulling chamber, described backwater outlet and abrasive material sand-feeding tube
Corresponding.
Further, described running gear is crawler belt, and this crawler belt is the independent bilateral crawler belt driven, and uses
Low speed hydraulic motor drives.
Further, described hydraulic control system includes master cylinder and fuel tank, and the piston cylinder of described master cylinder connects to be had
Slide block, also includes descending, the backhaul of piston cylinder connection sliding block for controlling master cylinder, downstream rate, pressure
PLC, be provided with proximity switch in the direction of stretching out of the piston cylinder of described master cylinder, described fuel tank is successively
By variable displacement with constant power pump, inserted valve, overflow valve, two position four-way solenoid valves, check valve, band shuttle valve plug-in mounting
Valve, choke valve, proportioning valve connect the hydraulic fluid port one of described master cylinder, and described band shuttle valve inserted valve passes sequentially through band row
Degree inserted valve, 2/2-way electromagnetic valve connect the oil-out two of described master cylinder, and described fuel tank passes through external control
Replenishing valve connects the hydraulic fluid port three of described master cylinder.
Further, described drill bit drive mechanism include oil cylinder support seat, propelling cylinder, angling cylinder, from
Folding and unfolding high-pressure hose and hydraulic joint.
Drill bit mechanism described further includes general drilling rod, drill steel support seat and drill bit；Described oil cylinder supports
Seat and drill steel support seat are each attached to support on platform.
Due to this utility model be designed to the abrasive material feeder sleeve on water jet device to be arranged symmetrically with enter sand hole and
Backwater hole.When backflow occurs in sprayer body blocking, can be discharged by the backflow discharge pipe of this bypass, it is to avoid
Flow back into feeding system, thus ensure that abrasive material feeding system being dried under any circumstance, improve spray
Head body running reliability；Arrange into sand hole and backwater hole by symmetrical equilibrium, eliminate and caused by sand blasting blockage
Backwater enter into the phenomenon of abrasive material inlet valve, thus without occur backwater be directly entered abrasive material inlet valve therefore
Barrier, is conducive to improving reliability and the working (machining) efficiency of cutting process；
This utility model can be effectively improved the effect of gas control, improves the driving speed of coal road, integration knot
Structure can be adjusted flexibly drilling parameter, the remarkable advantage that this makes it have short construction period, efficiency is high；Rig
And water jet system can greatly increase jet impulse rock (coal seam) and form the degree of depth of circular ring type slot,
Reduce the anti-cutting power of solid rock to greatest extent, increase the breathability in coal seam, reduce coal-bed gas
Pressure and gas bearing capacity, reduce the difficulty of machinery pick crushing hard rock, improve rig and creep into hard rock
The ability of stone and efficiency, be possible not only to the dust suppressing catalase to produce well, moreover it is possible to realizes machinery and cuts
Tooth crushing hard rock, in the service life of prolonged mechanical pick, improves the safe efficient of coal resources and opens
Send out.
Accompanying drawing explanation
Fig. 1 is the multifunctional scour-preventing jet flow drilling and joint-cutting spray head for coal bed structural representation that this utility model provides；
Fig. 2 is the structural representation of the hydraulic control system that this utility model embodiment provides；
Fig. 3 is rig and the structural representation of water jet system of this this utility model offer；
Fig. 4 is the water jet device schematic diagram that this this utility model provides.
In figure: 1, body；2, running gear；3, power source；4, hydraulic control system；4-1, master cylinder；
4-2, fuel tank；4-3, variable displacement with constant power pump；4-4, inserted valve；4-5, overflow valve；4-6, two four-ways
Electromagnetic valve；4-7, check valve；4-8, band shuttle valve inserted valve；4-9, choke valve；4-10, proportioning valve；4-11、
Hydraulic fluid port one；4-12, tape travel limit inserted valve；4-13,2/2-way electromagnetic valve；4-14, oil-out two；
4-15, external control replenishing valve；4-16, hydraulic fluid port three；5, support means；6, telescopic arm；7, rig and water-jet
Streaming system；7-1, water jet device；7-1-1, water-jet nozzle；7-1-2, abrasive material mulling chamber；7-1-3、
Sprayer body；7-1-4, blasting by abrasives pipe；7-1-5, abrasive material sand-feeding tube；7-1-6, backwater export；7-2、
Drill bit drive mechanism；7-3, drill bit mechanism.
Detailed description of the invention
For summary of the invention of the present utility model, feature and effect can be further appreciated that, hereby enumerate following example,
And it is as follows to coordinate accompanying drawing to describe in detail.
Refer to shown in Fig. 1 to Fig. 4:
Body 1, running gear 2, power source 3, hydraulic control system 4, support means 5, telescopic arm 6 and
Rig and water jet system 7, the both sides of described body 1 are provided with running gear 2, on described running gear 2
Being provided with power source 3, the end of described power source 3 arranges hydraulic control system 4, described hydraulic control system
The other end of 4 connects support means 5, and described support means 5 is provided above telescopic arm 6, described hydraulic part control
System 4 processed controls the direction of motion of telescopic arm 6, and the front end of described telescopic arm 6 connects rig and water jet system
System 7.
Described rig and water jet system 7 include water jet device 7-1, drill bit drive mechanism 7-2 and drill bit
Mechanism 7-3.
Described water jet device 7-1 includes water-jet nozzle 7-1-1, abrasive material mulling chamber 7-1-2, sprayer body
7-1-3, blasting by abrasives pipe 7-1-4, abrasive material sand-feeding tube 7-1-5 and the backwater having on sprayer body housing go out
Mouth 7-1-6, there is through hole at the center of sprayer body, and one end is high pressure intake, the centre bore of the other end of sprayer body
Blasting by abrasives pipe is inside installed, by clamp nut, described blasting by abrasives pipe is connected with sprayer body；Water-jet
Flow nozzle is positioned at the high pressure intake of sprayer body；Sprayer body between water jet nozzle and blasting by abrasives pipe
Forming abrasive material mulling chamber in endoporus, described backwater outlet is corresponding with abrasive material sand-feeding tube.
Described running gear 2 is crawler belt, and this crawler belt is the independent bilateral crawler belt driven, and uses low speed liquid
Pressure motor drives.
Described hydraulic control system 4 includes the piston cylinder of master cylinder 4-1 and fuel tank 4-2, described master cylinder 4-1 even
It is connected to slide block, also includes descending, the backhaul of piston cylinder connection sliding block for controlling master cylinder 4-1, lower scanning frequency
Degree, the PLC of pressure, be provided with proximity switch in the direction of stretching out of the piston cylinder of described master cylinder 4-1,
Described fuel tank 4-2 passes sequentially through variable displacement with constant power pump 4-3, inserted valve 4-4, overflow valve 4-5, two four-ways
Electromagnetic valve 4-6, check valve 4-7, band shuttle valve inserted valve 4-8, choke valve 4-9, proportioning valve 4-10 connect institute
State hydraulic fluid port one 4-11 of master cylinder 4-1, described band shuttle valve inserted valve 4-8 and pass sequentially through tape travel restriction inserted valve
4-12,2/2-way electromagnetic valve 4-13 connect oil-out two 4-14, described fuel tank 4-2 of described master cylinder 4-1
Hydraulic fluid port three 4-16 of described master cylinder 4-1 is connected by external control replenishing valve 4-15.
Described water jet device 7-1 is supertension abrasive water-jet generation system.
Described drill bit drive mechanism 7-2 include oil cylinder support seat, propelling cylinder, angling cylinder, from folding and unfolding
High-pressure hose and hydraulic joint.
Described drill bit mechanism 7-3 includes general drilling rod, drill steel support seat and drill bit；Described oil cylinder supports seat
It is each attached to support on platform with drill steel support seat.
Body 1 described in this utility model is immobilizing foundation and the load carrier of other each several parts, by all its
He partly links as a whole.Body 1 needs have enough intensity, rigidity and stability.As by liquid
Force feed case and body combine together, and hydraulic oil container steel plate thickeies and doubles as frame, effectively reduces the profile of complete machine
Size, increases the area of dissipation of fuel tank simultaneously.This utility model is transformed on the basis of former development machine
And design, the most original body provides conveniently, shortens the design cycle；Row described in this utility model
Walking apparatus 2 uses low speed hydraulic motor to drive, similar with common bull-dozer, have grounding pressure low,
The plurality of advantages such as adhesive force is strong, driving force is big, ground strong adaptability, can preferably adapt to underground coal mine and make
Industry environment, can meet walking and movement requirement completely, can reduce again cost.Described in this utility model
Power source 3 former development machine complete machine uses hydraulic driving mode, driven by motor hydraulic pump pressure oil output give each
Action tank or motor provide the energy.It is big that hydraulic driving mode has power-mass ratio, compact conformation, arranges
Flexibly, the feature such as easy to control, be also the first-selected design of the various powerful device of underground coal mine.According to
The demand driving power is calculated by newly added equipment and existing retaining device, and existing hydraulic power unit can be expired completely
Foot power demand, is not required to increase motor and hydraulic pump separately.This is a very favorable condition, because
The design of power source is selected and has not only been saved cost, and also saves the space of preciousness, and this makes follow-up
Rig and slotting device be disposed with enough motilities.Hydraulic control system described in this utility model
The control work of cutterhead when the core of original hydraulic control system is driving, and transform control function as and become
Change very big, add supporting mechanism, rig, position, hole parameter adjustment mechanism and the rotating hydraulic of particular design
The control requirement of Gang Deng mechanism and device, the design such as the layout of the most original hydraulic control system also with newly set
Standby requirement difference is bigger.So, original hydraulic control system substantially remove need not, coordinate large arm, brill
Machine and the action of position, hole parameter adjustment mechanism, redesign hydraulic control system loop, again to control system
The installation sites of parts etc. are designed for uniformity planning.The design of support means described in this utility model is installed additional
Four set support meanss, are distributed in car load front and rear, are similar to four supports of hydraulic mobile crane
Device, increases Area of bearing.The support force of horizontal direction can be effectively increased, it is to avoid car load retreats, with
Time, owing to increasing Area of bearing, the stability of car load when effectively improving work.Institute in this utility model
State rig and water jet system is that the overall dimensions realized when complete machine works controls.
What the abrasive material feeder sleeve on water jet device was designed to be arranged symmetrically with by this utility model enters sand hole and backwater
Hole.When backflow occurs in sprayer body blocking, can be discharged by backflow discharge pipe of this bypass, it is to avoid backflow
Enter feeding system, thus ensure that abrasive material feeding system under any circumstance be dried, improve sprayer body
Functional reliability；Arranged into sand hole and backwater hole by symmetrical equilibrium, eliminate by returning that sand blasting blockage causes
Water enters into the phenomenon of abrasive material inlet valve, thus without the fault occurring backwater to be directly entered abrasive material inlet valve,
Be conducive to improving reliability and the working (machining) efficiency of cutting process.Sprayer body axially extending bore front end is and taper water-jet
Flow nozzle is with the bellmouth nozzle carrier of the conical surface, and in slightly larger hole, rear end, interference fit press-in has hard alloy to make
Cylinder ring abrasive material mulling chamber, the entrance point in abrasive material mulling chamber has the sand launder of leading of 60 degree of chamferings, endoporus to be circular straight
, radially there are abrasive material sand-feeding tube and return pipe in hole between water jet nozzle and abrasive material mulling chamber, end more macropore interpolation
Put blasting by abrasives pipe；Clamping nut axially extending bore is also in ledge structure, and middle part is machined with the conical surface, and it is fixed to be placed with
Position, hold abrasive jet pipe positioning nylon collet tightly.Collet can according to actual needs or need not, but
Install nylon collet under special circumstances, during assembling, in sprayer body front-end-cone face, put into water-jet
Flow nozzle, is pressed into changeable type annulus abrasive material mulling chamber by rear end, inserts blasting by abrasives pipe, blasting by abrasives
Pipe is outer equipped with taper nylon collet, then with clamping nut by blasting by abrasives pipe and sprayer body combination, pressure
Tightly.Use a period of time, when abrasive material mulling chamber, the abrasion of blasting by abrasives pipe, unclamp the sprayer body and pressure being spirally connected
Tight nut, pushing tow exits abrasive material mulling chamber, changes a new abrasive material mulling chamber, blasting by abrasives pipe, then uses
Clamping nut is spirally connected and screws.
The above is only to preferred embodiment of the present utility model, not makees this utility model any
Pro forma restriction, every according to technical spirit of the present utility model to made for any of the above embodiments any simply
Amendment, equivalent variations and modification, belong in the range of technical solutions of the utility model.
Claims (1)
1. a multifunctional scour-preventing jet flow drilling and joint-cutting spray head for coal bed, it is characterized in that, this multifunctional scour-preventing jet flow drilling and joint-cutting spray head for coal bed includes body, running gear, power source, hydraulic control system, support means, telescopic arm and rig and water jet system, the both sides of described body are provided with running gear, it is provided with power source on described running gear, the end of described power source arranges hydraulic control system, the other end of described hydraulic control system connects support means, described support means is provided above telescopic arm, described hydraulic control system is connected with telescopic arm, the front end of described telescopic arm connects rig and water jet system；
Rig and water jet system include water jet device, drill bit drive mechanism and drill bit mechanism, described water jet device includes water-jet nozzle, abrasive material mulling chamber, sprayer body, blasting by abrasives pipe, abrasive material sand-feeding tube and the backwater outlet having on sprayer body housing, there is through hole at the center of sprayer body, one end is high pressure intake, blasting by abrasives pipe is installed in the centre bore of the other end of sprayer body, by clamp nut, described blasting by abrasives pipe is connected with sprayer body；Water jet nozzle is positioned at the high pressure intake of sprayer body；Forming abrasive material mulling chamber in sprayer body endoporus between water jet nozzle and blasting by abrasives pipe, described backwater outlet is corresponding with abrasive material sand-feeding tube；
Described running gear is crawler belt, and this crawler belt is the independent bilateral crawler belt driven, and uses low speed hydraulic motor to drive；
Described hydraulic control system includes master cylinder and fuel tank, the piston cylinder of described master cylinder connects slide block, also include the descending of piston cylinder connection sliding block for controlling master cylinder, backhaul, downstream rate, the PLC of pressure, it is provided with proximity switch in the direction of stretching out of the piston cylinder of described master cylinder, described fuel tank passes sequentially through variable displacement with constant power pump, inserted valve, overflow valve, two position four-way solenoid valves, check valve, band shuttle valve inserted valve, choke valve, proportioning valve connects the hydraulic fluid port one of described master cylinder, described band shuttle valve inserted valve passes sequentially through tape travel and limits inserted valve, 2/2-way electromagnetic valve connects the oil-out two of described master cylinder, described fuel tank connects the hydraulic fluid port three of described master cylinder by external control replenishing valve；
Described drill bit drive mechanism include oil cylinder support seat, propelling cylinder, angling cylinder, from folding and unfolding high-pressure hose and hydraulic joint；
Described drill bit mechanism includes general drilling rod, drill steel support seat and drill bit；Described oil cylinder supports seat and drill steel support seat is each attached to support on platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620401641.2U CN205605209U (en) | 2016-05-05 | 2016-05-05 | Multi -functional coal seam scour protection efflux drilling joint -cutting shower nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620401641.2U CN205605209U (en) | 2016-05-05 | 2016-05-05 | Multi -functional coal seam scour protection efflux drilling joint -cutting shower nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205605209U true CN205605209U (en) | 2016-09-28 |
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ID=56969087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620401641.2U Expired - Fee Related CN205605209U (en) | 2016-05-05 | 2016-05-05 | Multi -functional coal seam scour protection efflux drilling joint -cutting shower nozzle |
Country Status (1)
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| CN (1) | CN205605209U (en) |
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| CN106837259A (en) * | 2017-04-01 | 2017-06-13 | 吉林大学 | A kind of ocean shallow layer gas hydrate micro-pipe increasing device and method |
| CN106988742A (en) * | 2017-04-14 | 2017-07-28 | 中国神华能源股份有限公司 | Hydraulic pump drive hydraulic shock pick closed system and its control method |
| CN107116482A (en) * | 2017-06-20 | 2017-09-01 | 南京大地水刀股份有限公司 | A kind of novel high-precision high-pressure water cutting head |
| CN107795278A (en) * | 2017-11-16 | 2018-03-13 | 恒天九五重工有限公司 | Stake machine equipment method for limiting speed and hydraulic speed-limiting system |
| CN110107292A (en) * | 2019-05-07 | 2019-08-09 | 中国矿业大学(北京) | High-pressure abradant jet current grooving machine |
| CN111877995A (en) * | 2020-07-20 | 2020-11-03 | 南京集优智库信息技术有限公司 | Water outlet type trenching device distributed at center of main shaft of cutter head |
| CN112944188A (en) * | 2019-11-26 | 2021-06-11 | 北京机械工业自动化研究所有限公司 | Gun type movable oiling device and oiling head thereof |
| CN113266348A (en) * | 2021-06-24 | 2021-08-17 | 中国铁建重工集团股份有限公司 | Tunneling and anchoring all-in-one machine integrated with water jet system and construction method |
| CN114151078A (en) * | 2021-12-02 | 2022-03-08 | 中国铁建重工集团股份有限公司 | Water jet waste rock layer cut device |
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| CN106837259B (en) * | 2017-04-01 | 2023-02-17 | 吉林大学 | Device and method for increasing yield of marine shallow natural gas hydrate microtubules |
| CN106837259A (en) * | 2017-04-01 | 2017-06-13 | 吉林大学 | A kind of ocean shallow layer gas hydrate micro-pipe increasing device and method |
| CN106988742A (en) * | 2017-04-14 | 2017-07-28 | 中国神华能源股份有限公司 | Hydraulic pump drive hydraulic shock pick closed system and its control method |
| CN106988742B (en) * | 2017-04-14 | 2019-03-05 | 中国神华能源股份有限公司 | Hydraulic pump drives hydraulic shock pick closed system and its control method |
| CN107116482A (en) * | 2017-06-20 | 2017-09-01 | 南京大地水刀股份有限公司 | A kind of novel high-precision high-pressure water cutting head |
| CN107795278A (en) * | 2017-11-16 | 2018-03-13 | 恒天九五重工有限公司 | Stake machine equipment method for limiting speed and hydraulic speed-limiting system |
| CN107795278B (en) * | 2017-11-16 | 2023-08-01 | 恒天九五重工有限公司 | Speed limiting method for working device of pile driver and hydraulic speed limiting system |
| CN110107292A (en) * | 2019-05-07 | 2019-08-09 | 中国矿业大学(北京) | High-pressure abradant jet current grooving machine |
| CN112944188A (en) * | 2019-11-26 | 2021-06-11 | 北京机械工业自动化研究所有限公司 | Gun type movable oiling device and oiling head thereof |
| CN111877995A (en) * | 2020-07-20 | 2020-11-03 | 南京集优智库信息技术有限公司 | Water outlet type trenching device distributed at center of main shaft of cutter head |
| CN113266348A (en) * | 2021-06-24 | 2021-08-17 | 中国铁建重工集团股份有限公司 | Tunneling and anchoring all-in-one machine integrated with water jet system and construction method |
| CN114151078A (en) * | 2021-12-02 | 2022-03-08 | 中国铁建重工集团股份有限公司 | Water jet waste rock layer cut device |
| CN114151078B (en) * | 2021-12-02 | 2024-04-19 | 中国铁建重工集团股份有限公司 | Water jet gangue layer slitting device |
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