CN106050232A - Water-saving efficiency-increased hydraulic cutting pick - Google Patents
Water-saving efficiency-increased hydraulic cutting pick Download PDFInfo
- Publication number
- CN106050232A CN106050232A CN201610453901.5A CN201610453901A CN106050232A CN 106050232 A CN106050232 A CN 106050232A CN 201610453901 A CN201610453901 A CN 201610453901A CN 106050232 A CN106050232 A CN 106050232A
- Authority
- CN
- China
- Prior art keywords
- water
- pick
- tooth body
- conical surface
- toothholder
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000000956 alloy Substances 0.000 claims abstract description 14
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 14
- 239000000428 dust Substances 0.000 claims abstract description 11
- 239000007921 spray Substances 0.000 claims abstract description 11
- 230000002195 synergetic effect Effects 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 2
- 239000003245 coal Substances 0.000 abstract 1
- 230000007704 transition Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/60—Slitting by jets of water or other liquid
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
- E21C35/187—Mining picks; Holders therefor with arrangement of fluid-spraying nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a water-saving efficiency-increased hydraulic cutting pick which is suitable for high-pressure water jet coal cutters, heading machines and gadders. The water-saving efficiency-increased hydraulic cutting pick comprises a pick body with an alloy pick tip nozzle. The outer circle of the tail end of the pick body and an inner hole in the right portion in a pick base are in clearance fit. A flange cover is arranged in an inner hole in the left portion of the pick base. The outer circle of the right side of the flange cover is in transition fit with an inner hole in the left side of the pick base and is connected with the cutting pick base through a flange. An inner hole of the flange cover is in clearance fit with the middle of the pick body. The right conical face of the flange cover is coincident with the middle conical face of the pick body. The alloy pick tip nozzle and the pick body are each provided with a spray hole and a center runner communicating with the spray hole in the axial direction. Radial water runners communicating with the center runner are arranged in the middle of the pick body. An annular groove communicating with the radial water runners of the pick body is formed in the left side of the small-taper outer conical face of the pick body. The pick base is provided with a high-pressure water intake hole in the radial direction. By means of the water-saving efficiency-increased hydraulic cutting pick, high-pressure water flow can be controlled automatically, the rock crushing efficiency can be improved as the pick can cut hard rock, abrasion to the cutting pick is reduced, and the dust removal effect is improved; and in the no-load state, high-pressure water can be switched to low-pressure water, the water flow is reduced, and water resources are saved.
Description
Technical field
The present invention relates to a kind of water-saving and synergistic hydraulic pick, be that one is applicable to high-pressure water jet coal-winning machine, development machine, chisel
The water-saving and synergistic hydraulic pick of rock machine.
Background technology
At present, simple dependence machinery pick breaks rock, it is impossible to cut hard rock, and during development machine work, pick temperature is high, abrasion
Hurry up, during broken rock, Dust Capacity is big, there is potential safety hazard.Use high-pressure water jet Aided Machine pick breaking hard rock, be effective
One of method.But in existing high-pressure water jet auxiliary rock technology, the nozzle of employing is arranged apart with pick, owing to being adopted
The pick machinery factor such as pick installation site, nozzle range, pressure impact, high-pressure water jet can not useful effect broken in pick
Crackle, energy loss is big, it is impossible to meets the broken requirement of efficient low-consume and optimal dust-laying effect, and is difficult at down-hole jet stream flow
Control, at work surface, easily form flood, affect working face efficiency.
Summary of the invention
Technical problem: it is an object of the invention to for problem present in prior art, it is provided that one can control current
Amount, improves breaking hard rock efficiency, and dust-laying effect preferable water-saving and synergistic hydraulic pick.
Technical problem: the water-saving and synergistic hydraulic pick of the present invention, including having the toothholder of shoulder hole, the bottom center of toothholder
Having leak, toothholder one side radially offers the water under high pressure inlet opening communicated with shoulder hole, plug-in mounting in toothholder shoulder hole
There is tooth body described in tooth body to close at toothholder outer face and have the annular groove communicated that misplaces with water under high pressure inlet opening, in annular groove
Having radially water channel, tooth body front portion has and the center water channel that radially water channel communicates vertically, and the center water channel of tooth body front end goes out
Being provided with alloy crown nozzle, the tail end face of tooth body and toothholder bottom surface matched in clearance at Kou, described toothholder outer face inner chamber is provided with
The flange sleeve matched with tooth body；
Described flange sleeve medial extremity inner bore chamfering is Small Taper internal conical surface, in the annular groove of described tooth body and flange sleeve
The chamfering of side inner bore chamfering opposite side is Small Taper outer conical surface, and the inner side of described Small Taper outer conical surface is provided with and high pressure
The step that aperture, water inlet opening shoulder matches；
When tooth body is moved to the left until Small Taper internal conical surface coordinates with Small Taper outer conical surface, water under high pressure is from water under high pressure
Inlet opening enters, being changed into mesolow water through the fit clearance of Small Taper internal conical surface and Small Taper outer conical surface, to flow to annular recessed
In groove, then flow successively through radially water channel, center flow channels, finally sprayed by the spray orifice of alloy nozzle body；
When tooth body moves right until tooth body tail end is butted on toothholder intracavity bottom, outside Small Taper internal conical surface and Small Taper
The spacing of taper seat expands, and water under high pressure enters high-pressure water inlet hole, flows through between Small Taper internal conical surface and Small Taper outer conical surface
To annular groove, then flow successively through radially water channel, center flow channels, finally sprayed by the spray orifice of alloy nozzle body.
Described Small Taper internal conical surface is consistent with Small Taper outer conical surface tapering, and Small Taper internal conical surface limits tooth body
Moving range.
Described flange sleeve outboard end is provided with dust seal groove, is provided with match with tooth body dust-proof close in dust seal groove
Seal.
Described flange sleeve is connected by hexagon socket head cap screw with toothholder.
Described flange sleeve and toothholder counterface are provided with red copper sealing ring.
Described tooth body tail end periphery is provided with Ge Laiquan with the face that coordinates of toothholder endoporus；Periphery and method in the middle part of tooth body
Blue set inner hole face is provided with Ge Laiquan.
Cylindrical in the middle part of endoporus interference fits inside described flange sleeve medial extremity periphery and toothholder, flange sleeve endoporus and tooth body
Matched in clearance.
At least one, described radial direction water channel.
Beneficial effect: owing to have employed technique scheme, the present invention compared with prior art has the advantage that
(1) using cone valve jaw structure, automatic control dynamic property is more preferable；
(2) sustainable during pick zero load carry out low discharge injection, greatly reduce water resource and the waste of energy, it is to avoid work
Make face and flood occurs, solve water under high pressure ejection time lag and the susceptible to plugging problem of nozzle simultaneously；
(3) use novel flange nested structure, shorten tooth body length, reduce moment of flexure suffered by pick box；
(4) use Flange joint assembling form, it is simple to the dismounting of pick, improve the interchangeability of parts；
(5) use lattice to enclose sealing and reduce frictional force, improve sealing property, install dust-proof seal ring, it is to avoid inside pick
Enter dust, improve service life；
(6) pick profile is as common pick, is mounted directly, has wide applicability on existing mining machinery.
Accompanying drawing explanation
Fig. 1 is the water-saving and synergistic hydraulic pick high-pressure water channel opening structure chart of the present invention；
Fig. 2 is the water-saving and synergistic hydraulic pick high-pressure water channel closed mode structure chart of the present invention；
Fig. 3 is the water-saving and synergistic hydraulic pick high-pressure water channel opening lower valve port partial enlargement structure chart of the present invention；
Fig. 4 is the water-saving and synergistic hydraulic pick high-pressure water channel closed mode lower valve port partial enlargement structure chart of the present invention.
In figure: 1-alloy crown nozzle；2-tooth body；3-center water channel；4-dust-proof seal ring；5-flange sleeve；6-
Hexagon socket head cap screw；7-red copper sealing ring；8-pick box；9-lattice enclose；10-radial flow path；11-leak；12-annular
Groove；13-water under high pressure inlet opening；14-Small Taper internal conical surface；15-Small Taper outer conical surface；16-step.
Detailed description of the invention
The invention will be further described for embodiment in below in conjunction with the accompanying drawings:
As shown in Figures 1 to 3, the water-saving and synergistic hydraulic pick of the present invention, mainly by alloy crown nozzle 1, tooth body 2, flange
Set 5 and toothholder 8 are constituted.Having shoulder hole on described toothholder 8, the bottom center of toothholder 8 has leak 11, passes through leak
11 water that can will leak out to tooth body tail end and toothholder in the cavity constituted are discharged, smoothly in order to avoid affecting the service behaviour of pick.
The one side of described toothholder 8 radially offers the water under high pressure inlet opening 13 communicated with shoulder hole, is fitted with in toothholder 8 shoulder hole
Tooth body 2, described tooth body 2 closes on and has the annular groove 12 communicated that misplaces with water under high pressure inlet opening 13, annular at toothholder 8 outer face
At least one radial direction water channel 10, the center water channel that tooth body 2 front portion has vertically with radially water channel 10 communicates is had in groove 12
3, the water channel exit, center of tooth body 2 front end is provided with alloy crown nozzle 1, and the tail end face of tooth body 2 is joined with gap, toothholder 8 bottom surface
Closing, described toothholder 8 outer face inner chamber is provided with the flange sleeve 5 matched with tooth body 2；Described tooth body 2 tail end periphery and toothholder 8
The cooperation face of endoporus is provided with lattice and encloses 9；In the middle part of tooth body 2, periphery and flange sleeve 5 inner hole face are provided with lattice and enclose 9.Close
Gold crown nozzle 1 and tooth body 2 offer spray orifice and the center water channel 3 of mutual conduction the most respectively, and tooth body 2 outer conical surface 15 is left
Offering radially water channel 10 bottom the annular groove 12 of side, tooth body 2 radially water channel 10 is conducted with center water channel 3, and toothholder 8 is radially
Offer water under high pressure inlet opening 13.
In the middle part of endoporus interference fits inside described flange sleeve 5 medial extremity periphery and toothholder 8, flange sleeve 5 endoporus and tooth body 2
Cylindrical matched in clearance；The outboard end of flange sleeve 5 is provided with dust seal groove, is provided with match with tooth body 2 anti-in dust seal groove
Dirt sealing ring 4；Flange sleeve 5 is connected by hexagon socket head cap screw with toothholder 8；Flange sleeve 5 and toothholder 8 counterface are provided with red copper and seal
Circle 7.On the right side of flange sleeve 5, on the left of cylindrical and toothholder 8, endoporus interference fits overlaps 5 centers, flange sleeve 5 endoporus and tooth body with locating flange
Cylindrical matched in clearance in the middle part of in the of 2, gap lattice enclose sealing 9；Outside utilizing on the right side of flange sleeve 5 in the middle part of internal conical surface 14 and tooth body 2
Degree of cooperation between taper seat 15 realizes the automatic control of discharge；
Described flange sleeve 5 medial extremity inner bore chamfering is Small Taper internal conical surface 14, the annular groove 12 of described tooth body 2 and method
The chamfering of blue set 5 medial extremity inner bore chamfering opposite side is Small Taper outer conical surface 15, described Small Taper outer conical surface 15 interior
Side is provided with the step 16 matched with aperture, water under high pressure inlet opening 13 shoulder；It is the automatic of pick that water under high pressure acts on step 16
Close and power is provided；Described Small Taper internal conical surface 14 is consistent with Small Taper outer conical surface 15 tapering, Small Taper internal conical surface
14 movings range limiting tooth body 2.
When tooth body 2 is moved to the left until Small Taper internal conical surface 14 coordinates with Small Taper outer conical surface 15, water under high pressure from
Water under high pressure inlet opening 13 enters, be changed into mesolow through the fit clearance of Small Taper internal conical surface 14 and Small Taper outer conical surface 15
Water flow in annular groove 12, then flows successively through radially water channel 10, center flow channels 3, is finally sprayed by the spray orifice of alloy nozzle body 1
Go out；
When tooth body 2 moves right until tooth body 2 tail end is butted on toothholder 8 intracavity bottom, Small Taper internal conical surface 14 and little
The spacing of tapering outer conical surface 15 expands, and water under high pressure enters high-pressure water inlet hole 13, flows through Small Taper internal conical surface 14 and Small Taper
To in annular groove 12 between outer conical surface 15, then flow successively through radially water channel 10, center flow channels 3, finally by alloy nozzle body 1
Spray orifice ejection.
Operation principle:
As it is shown in figure 1, tooth body 2 afterbody mainly has three acting surfaces axial compressive force by water under high pressure at toothholder 8 endoporus, this
Three water under high pressure action sections are respectively as follows: the two sides in annular groove 12, and the right flank of step 16.When water under high pressure is through height
Setting-out inlet opening 13 enters after toothholder 8 endoporus, and the power acted on the two sides in annular groove 12 due to water under high pressure is mutual
Offsetting, so water under high pressure mass action power suffered by tooth body 2 is the power that water under high pressure acts on step 16 right flank, this power makes tooth
Body 2 is moved to the left, until outer conical surface 15 contacts with internal conical surface 14.As shown in Figure 4, now between tooth body 2 and flange sleeve 5 only
Having non-uniform gap, water under high pressure inlet opening 13 and tooth body annular groove 12 to be intercepted by non-uniform gap, water under high pressure is through non-homogeneous
Gap is changed into low setting-out and is sprayed by nozzle through each runner.Alloy crown nozzle 1 moment keeps the low setting-out that ejection is stable, if
Dust enters the spray orifice of crown nozzle body 1 and is blocked by spray orifice, and at this moment in pick, low setting-out becomes high due to stopping flowing at once
Setting-out, after being sprayed by dust, reverts to low setting-out.
As it is shown on figure 3, when pick cutting hard rock, tooth body 2 is moved right by cutting resistance effect, until tooth body 2 afterbody
Contact with bottom toothholder 8 endoporus, now the distance between the outer conical surface 15 on tooth body 2 and the internal conical surface 14 in flange sleeve 5
Increasing, water under high pressure passage is opened.Owing to pick runner everywhere has been filled with low setting-out, water under high pressure passage one is opened, and water under high pressure passes through
The water jet flow of tooth body radially water channel 10 to center flow channels 3 increases rapidly, and then water jet speed raises, and impact kinetic energy is with three
Power relation increases rapidly, and water under high pressure signal is timely, be accurately delivered to crown nozzle body 1 by fluid, it is ensured that ejection water under high pressure
With pick stress close to Tong Bu.And when water under high pressure passage fully opens, tooth body 2 right side contacts bottom toothholder 8 endoporus,
Ensure stability during pick cutting.
As shown in Figure 4, when, after pick breaking hard rock, pick departs from fractured rock and is in Light Condition, due to tooth body 2 institute
By water under high pressure effect, tooth body 2 is moved to the left, shape between the internal conical surface 14 in the outer conical surface 15 of tooth body 2 and flange sleeve 5
Water under high pressure is changed into low setting-out and is sprayed by nozzle by the non-uniform gap becoming minimum, reduces useless jet flow to greatest extent and disappears
Consumption, prevents work surface generation flood.
Claims (8)
1. a water-saving and synergistic hydraulic pick, it is characterised in that: it includes the toothholder (8) having shoulder hole, the bottom of toothholder (8)
Central authorities have leak (11), and toothholder (8) one side radially offers the water under high pressure inlet opening (13) communicated with shoulder hole, tooth
Being fitted with tooth body (2) in seat (8) shoulder hole, described tooth body (2) is closed on and is had and water under high pressure inlet opening at toothholder (8) outer face
(13) misplace the annular groove (12) communicated, and has radially water channel (10) in annular groove (12), and tooth body (2) front portion is opened vertically
Having and the center water channel (3) that radially water channel (10) communicates, the water channel exit, center of tooth body (2) front end is provided with alloy crown nozzle
(1), the tail end face of tooth body (2) and toothholder (8) bottom surface matched in clearance, described toothholder (8) outer face inner chamber is provided with and tooth body (2)
The flange sleeve (5) matched；
Described flange sleeve (5) medial extremity inner bore chamfering is Small Taper internal conical surface (14), the annular groove (12) of described tooth body (2)
It is Small Taper outer conical surface (15) with the chamfering of flange sleeve (5) medial extremity inner bore chamfering opposite side, described Small Taper outer cone
The inner side in face (15) is provided with the step (16) matched with water under high pressure inlet opening (13) aperture shoulder；
When tooth body (2) is moved to the left until Small Taper internal conical surface (14) coordinates with Small Taper outer conical surface (15), water under high pressure
From water under high pressure inlet opening (13) enter, through Small Taper internal conical surface (14) and Small Taper outer conical surface (15) fit clearance transformation
It flow in annular groove (12) for mesolow water, then flow successively through radially water channel (10), center flow channels (3), finally sprayed by alloy
The spray orifice ejection of nozzle body (1)；
When tooth body (2) moves right until tooth body (2) tail end is butted on toothholder (8) intracavity bottom, Small Taper internal conical surface (14)
Expanding with the spacing of Small Taper outer conical surface (15), water under high pressure enters high-pressure water inlet hole (13), flows through Small Taper internal conical surface
(14) in annular groove (12) and between Small Taper outer conical surface (15), more radially water channel (10), center flow channels are flowed successively through
(3), finally sprayed by the spray orifice of alloy nozzle body (1).
Water-saving and synergistic hydraulic pick the most according to claim 1, it is characterised in that: described Small Taper internal conical surface (14)
Consistent with Small Taper outer conical surface (15) tapering, Small Taper internal conical surface (14) limits the moving range of tooth body (2).
A kind of novel water-saving potentiation hydraulic pick the most according to claim 1, it is characterised in that: described flange sleeve (5)
Outboard end is provided with dust seal groove, is provided with the dust-proof seal ring (4) matched with tooth body (2) in dust seal groove.
4. according to a kind of novel water-saving potentiation hydraulic pick described in claim 1 or 3, it is characterised in that: described flange sleeve
(5) it is connected by hexagon socket head cap screw with toothholder (8).
5. according to the water-saving and synergistic hydraulic pick described in claim 1 or 3, it is characterised in that: described flange sleeve (5) and toothholder
(8) counterface is provided with red copper sealing ring (7).
Water-saving and synergistic hydraulic pick the most according to claim 1, it is characterised in that: described tooth body (2) tail end periphery
It is provided with Ge Laiquan (9) with the face that coordinates of toothholder (8) endoporus；On tooth body (2) middle part periphery and flange sleeve (5) inner hole face
It is provided with Ge Laiquan (9).
Water-saving and synergistic hydraulic pick the most according to claim 1, it is characterised in that: described flange sleeve (5) medial extremity cylindrical
Face and toothholder (8) inner side endoporus interference fits, flange sleeve (5) endoporus and tooth body (2) middle part cylindrical matched in clearance.
Water-saving and synergistic hydraulic pick the most according to claim 1, it is characterised in that: described radial direction water channel (10) at least
Bar.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610453901.5A CN106050232A (en) | 2016-06-22 | 2016-06-22 | Water-saving efficiency-increased hydraulic cutting pick |
| PCT/CN2016/108859 WO2017219613A1 (en) | 2016-06-22 | 2016-12-07 | Water-saving and efficiency-increasing hydraulic cutting pick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610453901.5A CN106050232A (en) | 2016-06-22 | 2016-06-22 | Water-saving efficiency-increased hydraulic cutting pick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106050232A true CN106050232A (en) | 2016-10-26 |
Family
ID=57169351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610453901.5A Pending CN106050232A (en) | 2016-06-22 | 2016-06-22 | Water-saving efficiency-increased hydraulic cutting pick |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106050232A (en) |
| WO (1) | WO2017219613A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837327A (en) * | 2017-04-07 | 2017-06-13 | 中国矿业大学 | A kind of water-saving and synergistic automatic control hydraulic cutterhead |
| WO2017219613A1 (en) * | 2016-06-22 | 2017-12-28 | 中国矿业大学 | Water-saving and efficiency-increasing hydraulic cutting pick |
| CN107725049A (en) * | 2017-10-31 | 2018-02-23 | 长安大学 | A kind of anti-blocking hydraulic pick device of auto-pressurizing |
| CN109025988A (en) * | 2018-08-28 | 2018-12-18 | 辽宁工程技术大学 | A kind of novel dismountable continuous miner roller |
| CN114151082A (en) * | 2021-10-27 | 2022-03-08 | 中国矿业大学 | Automatic high-pressure jet flow auxiliary rock breaking and foam dust suppression cutting pick device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113877780B (en) * | 2020-10-27 | 2023-02-17 | 襄阳美利信科技有限责任公司 | New energy automobile charger water channel sealing process and structure |
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- 2016-12-07 WO PCT/CN2016/108859 patent/WO2017219613A1/en active Application Filing
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017219613A1 (en) * | 2016-06-22 | 2017-12-28 | 中国矿业大学 | Water-saving and efficiency-increasing hydraulic cutting pick |
| CN106837327A (en) * | 2017-04-07 | 2017-06-13 | 中国矿业大学 | A kind of water-saving and synergistic automatic control hydraulic cutterhead |
| CN107725049A (en) * | 2017-10-31 | 2018-02-23 | 长安大学 | A kind of anti-blocking hydraulic pick device of auto-pressurizing |
| CN107725049B (en) * | 2017-10-31 | 2024-05-14 | 长安大学 | Self-pressurization type anti-blocking hydraulic cutting pick device |
| CN109025988A (en) * | 2018-08-28 | 2018-12-18 | 辽宁工程技术大学 | A kind of novel dismountable continuous miner roller |
| CN114151082A (en) * | 2021-10-27 | 2022-03-08 | 中国矿业大学 | Automatic high-pressure jet flow auxiliary rock breaking and foam dust suppression cutting pick device |
| CN114151082B (en) * | 2021-10-27 | 2023-12-12 | 中国矿业大学 | Automatic high-pressure jet auxiliary rock breaking and foam dust suppression cutting pick device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017219613A1 (en) | 2017-12-28 |
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Application publication date: 20161026 |