CN207847672U - Coal mine return air gate road without supporting outfit repeatedly - Google Patents
Coal mine return air gate road without supporting outfit repeatedly Download PDFInfo
- Publication number
- CN207847672U CN207847672U CN201721861153.0U CN201721861153U CN207847672U CN 207847672 U CN207847672 U CN 207847672U CN 201721861153 U CN201721861153 U CN 201721861153U CN 207847672 U CN207847672 U CN 207847672U
- Authority
- CN
- China
- Prior art keywords
- support device
- single span
- coal mine
- span formula
- return air
- 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.)
- Withdrawn - After Issue
Links
- 239000003245 coal Substances 0.000 title claims abstract description 33
- 238000005065 mining Methods 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims description 17
- 238000010168 coupling process Methods 0.000 claims description 17
- 238000005859 coupling reaction Methods 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 239000000839 emulsion Substances 0.000 claims description 11
- 241000883966 Astrophytum capricorne Species 0.000 claims description 10
- 238000004945 emulsification Methods 0.000 claims description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000000916 dilatatory effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model belongs to the technical field of underground coal mine supporting, and in particular to a kind of coal mine return air gate road solves existing underground coal mine gib and exist and support repeatedly without outfit is supported repeatedly, from the problem of accelerating the destruction to top plate in varying degrees.It includes single span formula support device and crossheading support device carrier, the column that the single span formula support device includes crossbeam and can stretch, the crossheading support device carrier includes trackless flame proof rubber tyre vehicle, hoistable platform and rotating clamp, rotating clamp is arranged in hoistable platform and can act on single span formula support device, realize that single span formula support device connects top, de- top by lifting, single span formula support device behind de- top carries out limited angle rotating by rotating clamp and clamps, then is carried by crossheading support device carrier.The utility model is that fully-mechanized mining working safety and high efficiency creates reliable, flexible supporting condition, it can be achieved to support the nothing of top plate repeatedly, ensure the integrality of top plate, while the mechanical mining technique to improving development end, improves digging speed and production efficiency is of great significance.
Description
Technical field
The utility model belongs to the technical field of underground coal mine supporting, and in particular to a kind of coal mine return air gate road is without anti-
Outfit is supported again, is a kind of dress that can avoid supporting destruction repeatedly without advance support repeatedly to air return way back
It sets.
Background technology
《Safety regulations in coal mine》Regulation：Within the scope of all extra exits of coal working face and tunnel junction 20m, it is necessary to add
Strong supporting：Fully-mechanized coalface, the head-room within the scope of this must not be less than 1.8m, i.e. two crossheading of coal working face
Advance support must be taken within the scope of 30m.Present two crossheading advance support of coal working face substantially there are three types of：Traditional monomer liquid
Press pillar support pattern；Monoblock type forepoling hydraulic support；Split type advance timbering group：
1. hydraulic prop is equipped with the method for protecting support of metal hinge top beam, but under special geologic condition, the supporting
Method has shortcomings：
（1）Supporting intensity is low：Hydraulic prop bores bottom amount greatly, withdraws difficulty；For the coal seam that roof pressure is larger, reach
Less than supporting intensity, easily causes the top at working face extra exit and pull sinking；
（2）Support speed is slow：It is difficult to increase substantially since hydraulic prop, metal hinge top beam withdraw speed, make
About coal working face fltting speed, it is difficult to realize the high-yield and high-efficiency of fully mechanized coal face；
（3）Labor intensity is big：It is frequent due to installing, withdrawing hydraulic prop and articulated roof beam, and all using people
Power, causes that working face user of service is more, and labor intensity is big：
（4）It is of high cost, safety is poor：Because roof pressure is big or the reasons such as operation, the damage of pillar, articulated roof beam, column shoes
Larger, and complex procedures are measured, manual operation is more, and the probability to cause the accident is larger.
2. monoblock type forepoling hydraulic support and split type advance timbering group, the two advance timberings are to back
Matter condition has a higher requirement, and holder has top plate in tunnel actually uses to be supported repeatedly, from accelerating in varying degrees
Destruction to top plate.
Utility model content
The utility model exists to solve existing underground coal mine gib to be supported repeatedly, from accelerating in varying degrees
The problem of to the destruction of top plate, provides a kind of coal mine return air gate road without supporting outfit repeatedly.
The utility model adopts the following technical scheme realizes：
A kind of coal mine return air gate road without supporting outfit, including single span formula support device and crossheading support repeatedly
Device carrier, the column that the single span formula support device includes crossbeam and can stretch, the crossheading support device are removed
It includes trackless flame proof rubber tyre vehicle, hoistable platform and rotating clamp to transport vehicle, and rotating clamp is arranged in hoistable platform energy
Single span formula support device is enough acted on, realizes that single span formula support device connects top, de- top by lifting, takes off the single span formula support behind top
Device carries out limited angle rotating by rotating clamp and clamps, then is carried by crossheading support device carrier.
Further, it is equipped with chain and goat's horn Slip Hook before and after the crossbeam of the single span formula support device, when single span formula
Support device in place after, will be connected at three-legged structure before and after adjacent single span formula support device with goat's horn Slip Hook by chain
It connects.
Further, cone nail is set by globular hinge support base, the bottom of support base below the column.
Further, the rotating clamp includes rotating base and turntable, the rotating base and rotation
Turntable is setting up and down, turntable upper, rotating base under, both can relatively rotate limited angle, on the turntable
Two bent plates are symmetrical arranged, form card slot, the width of card slot is more than the width of mining support beam, on the turntable between two bent plates
Evenly arranged several round steel are set, the round steel of the arragement direction of each round steel on the axis of symmetry direction of two bent plates, turntable
With the round steel arranged crosswise of the below the crossbeam of single span formula support device.
Further, the relative rotation of the rotating base and turntable is completed by pushing and pulling jack.
Further, the rotating base further includes bottom plate, gusset, inner sleeve, cover board, limited block and connecting seat, institute
Inner sleeve is arranged in arranged concentric and centre to the bottom plate and cover board stated up and down, is symmetrical arranged on cover board there are two limiting plate, is limited
Position plate is tapered, and the both sides of side limiting plate are respectively arranged with connecting seat, and connecting seat can be connect with the pedestal of push-and-pull jack,
The link position of jack and both sides connecting seat is pushed and pulled by change to change the direction of rotation of turntable.
Further, the turntable further includes chassis, outer sleeve and engaging lug, the tray bottom center
The outer sleeve of inner sleeve can be placed on by being arranged, and be arranged engaging lug on outer sleeve, and it is symmetrical that the initial position of engaging lug is located at two bent plates
On the vertical line of axis, straight panel is additionally provided on outer sleeve, the rotational angle of straight panel is limited by limiting plate, and two straight panels are symmetrical with
Engaging lug is arranged, the tailpiece of the piston rod of engaging lug connection push-and-pull jack, the resistance of thrust and limited block by pushing and pulling jack
Realize the clamping of support beam.
Further, the coal mine return air wind gate road further includes quick coupling group without outfit is supported repeatedly
Plywood, quick coupling compoboard include quick on quick coupling two-way the moon and carrier on single span formula support device column
Connector two-way sun.
Further, the crossheading support device carrier is equipped with independent emulsification pump and emulsion box.
Further, hoistable platform is installed in the hopper of the crossheading support device carrier.
The utility model changes traditional support pattern, easily realizes tunneling boring in time actively without roof supporting repeatedly, favorably
In the Safety Control of Roof of mine.
（1）The utility model is mainly by crossheading support device carrier, hoistable platform, rotating clamp by work
The single span formula support device of face gate road is transported to roadway workface front end, carries out immediate support to tunnel, avoids to tunnel
Support repeatedly, realize without supporting repeatedly, ensure the integrality of back.
（2）Hoistable platform is arranged on crossheading support device carrier, is moved forward with crossheading support device carrier, is risen
It drops platform interior and is equipped with lifting cylinder, crossheading support device fuel tank provides power for its lifting.
（3）Rotating clamp is arranged on hoistable platform, with crossheading support device carrier and hoistable platform to Forward
Dynamic, lifting, rotating clamp is interior to be equipped with push cylinder, and crossheading support device fuel tank provides power for its lifting.
（4）Crossheading support device carrier is equipped with independent emulsion pump and emulsion box, by switching crossheading support
The pump of device carrier can provide power for emulsification pump, be the feed flow of single span formula support device, to realize the lifting of column.
（5）The single span formula support device of the utility model passes through quick coupling group with the system of crossheading support device carrier
Plywood realizes the quick connection to system, securely and reliably, save trouble and labor.
（6）By globular hinge support base below column, the bottom of support base sets cone nail, to roadway floor adaptability
Preferably.
（7）Chain, goat's horn Slip Hook are equipped with before and after the crossbeam of single span formula support device, when single span formula support device arrives
Behind position, it will be connected at three-legged structure before and after adjacent single span formula support device by chain, goat's horn Slip Hook, single span formula can be prevented
Support device is toppled over.
（8）Crossheading support device carrier is bidirectional driving, avoids turning around, easy to operate.
（9）Single span formula support device also can be used alone, and to top plate roof fall in tunnel or sinking larger part, can individually carry out
Supporting ensures complete and personnel the safety of top plate.
（10）Rotating clamp mainly realizes rotation by pushing and pulling jack, bearing, inside and outside sleeve and limited block etc.
Turn to clamp, simple in structure, operation is flexible.
The utility model has following advantageous effect：Crossheading support device carrier, hoistable platform, rotating clamp
The single span formula support device in return airway tunnel is transported to roadway workface front end, immediate support is carried out to tunnel, is avoided
Support repeatedly to tunnel is realized without supporting repeatedly, ensures the integrality of back, be conducive to the top plate of coal mine headwork
Safety management creates safe working environment for comprehensive pick face.Supporting program can be simplified, avoid operating personnel's operation in the case where sky pushes up
Security risk.Coal mine fully-mechanized mining face crossheading mechanization supporting work degree is improved, digging speed and working efficiency are greatly improved, is dropped
Low excavation cost and the labor intensity of operating personnel ensure personnel safety.
The utility model is that fully-mechanized mining working safety and high efficiency creates reliable, flexible supporting condition, it can be achieved that top
The nothing of plate supports repeatedly, ensures the integrality of top plate, while the mechanical mining technique to improving development end, improves digging speed
It is of great significance with production efficiency.
Description of the drawings
Fig. 1 is total schematic diagram of the utility model,
Fig. 2 is the vertical view of Fig. 1,
The side view of Fig. 3 bitmaps 1,
Fig. 4 is the single span formula support device schematic diagram of the utility model,
Fig. 5 is the side view of Fig. 4,
Fig. 6 is the crossheading support device carrier schematic diagram of the utility model,
Fig. 7 is the vertical view of Fig. 6,
Fig. 8 is the front view of the utility model,
Fig. 9 is the vertical view of Fig. 8,
Figure 10 is the side view of Fig. 8,
Figure 11 is the front view of rotating base,
Figure 12 is the vertical view of Figure 11,
Figure 13 is the side view of Figure 11,
Figure 14 is the front view of turntable,
Figure 15 is the vertical view of Figure 14,
Figure 16 is the side view of Figure 14,
In figure：1- single span formulas support device, 2- crossheading support devices carrier, 3- quick couplings compoboard, 4- crossbeams, 5-
Column, 6- support bases, 7- axis pins, 8- chains, 9- shackles, 10- goat's horn Slip Hooks.11- tracklesses flame proof rubber tyre vehicle, 12- liftings are flat
Platform, 13- rotating clamps, 14- emulsion pumps, 15- emulsion box；
13.1- rotating bases, 13.2- turntables, 13.3- push-and-pulls jack, 13.4- axis pins, 13.5- bearings, the bottoms 13.6-
Plate, 13.7- gussets, 13.8- inner sleeves, 13.9- cover boards, 13.10- limited blocks, 13.11- connecting seats, the chassis 13.12-,
13.13- outer sleeves, 13.14- bent plates, 13.15- round steel, 13.16- engaging lugs.
Specific implementation mode
Specific embodiment of the present utility model is described further in conjunction with attached drawing.
A kind of coal mine return air gate road without supporting outfit, including single span formula support device 1, crossheading support dress repeatedly
Set carrier 2, quick coupling compoboard 3.The single span formula support device 1 includes crossbeam 4, column 5, support base 6, axis pin
7, chain 8, shackle 9, goat's horn Slip Hook 10.The crossheading support device carrier 2 includes trackless flame proof rubber tyre vehicle 11, lifts and put down
Platform 12, rotating clamp 13, emulsion pump 14, emulsion box 15.The quick coupling compoboard 3 includes quick coupling two
Lu Yin, quick coupling two-way sun.
The single span formula support device 1 is mainly connected to 4 both ends of crossbeam by column 5 by axis pin.Under the column 5
By globular hinge support base 6, the bottom of support base 6 sets cone nail, preferable to roadway floor adaptability for side.The single span
It is equipped with chain 8, goat's horn Slip Hook 10 before and after the crossbeam of formula support device 1, after single span formula support device 1 supports to place, passes through
Chain 8, goat's horn Slip Hook 10 will be connected before and after adjacent single span formula support device 1 at three-legged structure, can prevent single span formula from supporting
Device 1 is toppled over.
The crossheading support device carrier 2 uses integral rigidity welded type vehicle frame, and anti-explosion diesel engine is power source, liquid
Press mechanical pressing formula is driven, and 6 × 6 a11wheel drives, bidirectional driving avoids reversing end for end, all-hydraulic manipulation, fill-type solid tyre, steering side
Formula is original place glide steering, and service brake is braked for back pressure, and parking braking is braked for safety-type multi-disc wet type, and anti-explosion diesel engine is adopted
With gas motor starting mode, and the narrow railless free-wheeled vehicle that the support device for being provided with pressure safety protective device is carried.
Hoistable platform 12 is installed in the hopper of the crossheading support device carrier 2, it can be by lifting single span formula branch
Support arrangement 1 connects top, de- top.Rotating clamp 13 is arranged on the hoistable platform of the crossheading support device carrier 2, to de-
Single span formula support device behind top carries out rotation clamping, then is carried by crossheading support device carrier 2.The single span formula
It is equipped with round steel in the card slot of the lower section of crossbeam 4 of support device 1 and the turntable of rotating clamp 13, round steel arranged crosswise,
It can prevent single span formula support device 1 from falling into left and right vibration in card slot.
The crossheading support device carrier 2 is no longer needed to equipped with independent emulsification pump 14 and emulsion box 15 from suitable
Slot tunnel is dilatory to emulsify liquid pipeline to control the lifting of support device.
The control system of the outfit uses the quick coupling compoboard 3 of fast inserted self-sealing, it is ensured that whole frame
It is exposed without fluid pressure line, support device lifting, handling time is greatly saved.
To being described in detail：Mining support beam rotating clamp, including rotating base 1, turntable 2, push-and-pull thousand
Jin top 3, axis pin 4 and bearing 5.The rotating base 1 includes bottom plate 6, gusset 7, inner sleeve 8, cover board 9, limited block 10 and connects
Joint chair 11.The turntable 2 includes mainly chassis 12, outer sleeve 13, bent plate 14, round steel 15 and engaging lug 16.Turntable 2
Outer sleeve 13 is placed on the inner sleeve 9 of rotating base 1, intermediate arrangement bearing 5, and push-and-pull jack 3 is connected to by axis pin 4
Between the connecting seat 11 of rotating base 1 and the engaging lug 16 of turntable 2.The round steel 15 of turntable 2 is arranged between the bent plate of both sides
In card slot.Rotating base 1 is equipped with connecting seat 11 at two, the link position of jack 3 can be pushed and pulled by change to change rotation
The direction of rotation of platform 2.Bearing 5 is arranged between the inner sleeve 8 of rotating base 1 and the outer sleeve 13 of turntable 2, to reduce rotation
Frictional force in the process.Rotating base 1 is equipped with limited block 11, the resistance of thrust and limited block 10 by pushing and pulling jack 3
Realize the clamping of support beam.Both sides are equipped with bent plate 9 on turntable 2, form card slot, can be easy to support beam and fall into slot.Together
Round steel 15 is arranged in support respectively on time slot, below support beam, can prevent support beam left and right vibration in slot.
The utility model is mainly used for coal mine return air gate road advance support.Single span formula support device arranges working face
Face air return way tunnel when moving frame, crossheading support device carrier is opened to drive end unit single span formula support device, will be carried
The two-way that the two-way sun of quick coupling compoboard on vehicle is inserted into the quick coupling compoboard on single span formula support device column is cloudy；
On hoistable platform in the middle part of the crossbeam of the card slot alignment suspension device of rotating mechanism, hoistable platform is risen, until crossbeam falls into card slot
In；The pump of carrier is switched to emulsion pump, by operating the reversal valve on carrier by the column of single span formula support device
It withdraws completely, drop hoistable platform makes the beam surface upper of suspension device apart from 550~650mm of top plate, then by hoistable platform
Rotating mechanism suspension device is rotated；The pump of carrier is switched to traveling pump, crossheading support device carrier carries single span
Formula support device ajusts contained single span formula support device to the front end of crossheading advance support, by rotating mechanism, will carry
The pump of vehicle is switched to emulsion pump, and the beam surface upper that hoistable platform is risen to single span formula support device is close to top plate, then will be single
The column of straddle type support device extend out to its complete stretching top plate；It will be connected before and after adjacent single span formula support device by chain
It connects, hoistable platform is dropped into minimum point, the two-way sun of quick coupling compoboard is detached with two-way sun, and the pump of carrier is switched
For traveling pump, crossheading support device carrier reaches fully mechanized coal face drive end unit and carries out next cycle.
Claims (10)
1. a kind of coal mine return air gate road without supporting outfit repeatedly, it is characterised in that：Including single span formula support device（1）
And crossheading support device carrier（2）, the single span formula support device（1）Including crossbeam（4）With the column that can be stretched
（5）, the crossheading support device carrier（2）Including trackless flame proof rubber tyre vehicle（11）, hoistable platform（12）And rotating clamp
Tight device（13）, rotating clamp is arranged in hoistable platform（12）It can act on single span formula support device（1）, pass through lifting
Realize single span formula support device（1）Top, de- top are connect, the single span formula support device behind de- top is rotated by rotating clamp
Limited angle simultaneously clamps, then by crossheading support device carrier（2）It is carried.
2. coal mine return air gate road according to claim 1 without supporting outfit repeatedly, it is characterised in that：Described
Single span formula support device（1）Crossbeam before and after be equipped with chain（8）With goat's horn Slip Hook（10）, when single span formula support device（1）Branch
After support in place, pass through chain（8）With goat's horn Slip Hook（10）By adjacent single span formula support device（1）It is front and back to be connected at three-legged structure
It connects.
3. coal mine return air gate road according to claim 1 or 2 without supporting outfit repeatedly, it is characterised in that：Institute
The column stated（5）Lower section passes through globular hinge support base（6）, support base（6）Bottom set cone nail.
4. coal mine return air gate road according to claim 3 without supporting outfit repeatedly, it is characterised in that：Described
Rotating clamp includes rotating base（13.1）And turntable（13.2）,
The rotating base（13.1）With turntable（13.2）It is setting up and down, turntable（13.2）In upper, rotating base
（13.1）Under, both can relatively rotate limited angle,
The turntable（13.2）Upper two bent plates arranged symmetrically, form card slot, and the width of card slot is more than mining support beam
Width, is arranged evenly arranged several round steel on the turntable between two bent plates, pair of the arragement direction of each round steel along two bent plates
Claim axis direction, the round steel on turntable and single span formula support device（1）Crossbeam（4）The round steel arranged crosswise of lower section.
5. coal mine return air gate road according to claim 4 without supporting outfit repeatedly, it is characterised in that rotation bottom
Seat（13.1）With turntable（13.2）Relative rotation pass through push and pull jack（13.3）It completes.
6. coal mine return air gate road according to claim 5 without supporting outfit repeatedly, it is characterised in that described
Rotating base（13.1）It further include bottom plate（13.6）, gusset（13.7）, inner sleeve（13.8）, cover board（13.9）, limited block
（13.10）And connecting seat（13.11）, the bottom plate（13.6）And cover board（13.9）Upper and lower arranged concentric and centre is set
Set inner sleeve（13.8）, it is symmetrical arranged that there are two limiting plates on cover board, limiting plate is tapered, and the both sides of side limiting plate are set respectively
It is equipped with connecting seat, connecting seat can be connect with the pedestal of push-and-pull jack, and jack is pushed and pulled by change（13.3）Connect with both sides
The link position of joint chair changes turntable（13.2）Direction of rotation.
7. coal mine return air gate road according to claim 6 without supporting outfit repeatedly, it is characterised in that described
Turntable（13.2）It further include chassis（13.12）, outer sleeve（13.13）And engaging lug（13.16）, the chassis（13.12）
Bottom centre position setting can be placed on inner sleeve（13.8）Outer sleeve（13.13）, engaging lug is set on outer sleeve
（13.16）, the initial position of engaging lug is located on the vertical line of the two bent plate axis of symmetry, straight panel is additionally provided on outer sleeve, directly
The rotational angle of plate is limited by limiting plate, and two straight panels are symmetrical with engaging lug（13.16）Setting, engaging lug connection push-and-pull jack
Tailpiece of the piston rod, pass through push and pull jack（13.3）Thrust and limited block（13.10）Resistance realize support beam clamping.
8. coal mine return air gate road according to claim 7 without supporting outfit repeatedly, it is characterised in that：It is also wrapped
Include quick coupling compoboard（3）, quick coupling compoboard includes that the quick coupling two-way on single span formula support device column is cloudy
（16）And the quick coupling two-way sun on carrier（17）.
9. coal mine return air gate road according to claim 8 without supporting outfit repeatedly, it is characterised in that：Described
Crossheading support device carrier（2）Equipped with independent emulsification pump（14）And emulsion box（15）.
10. coal mine return air gate road according to claim 9 without supporting outfit repeatedly, it is characterised in that：It is described
Crossheading support device carrier（2）Hopper in hoistable platform is installed（12）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721861153.0U CN207847672U (en) | 2017-12-27 | 2017-12-27 | Coal mine return air gate road without supporting outfit repeatedly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721861153.0U CN207847672U (en) | 2017-12-27 | 2017-12-27 | Coal mine return air gate road without supporting outfit repeatedly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207847672U true CN207847672U (en) | 2018-09-11 |
Family
ID=63419194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721861153.0U Withdrawn - After Issue CN207847672U (en) | 2017-12-27 | 2017-12-27 | Coal mine return air gate road without supporting outfit repeatedly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207847672U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989641A (en) * | 2017-12-27 | 2018-05-04 | 中国煤炭科工集团太原研究院有限公司 | Coal mine return air gate road without supporting outfit repeatedly |
| CN112576301A (en) * | 2020-12-15 | 2021-03-30 | 郑州煤矿机械集团股份有限公司 | Fully-mechanized mining face transportation crossheading unit support carrying system |
-
2017
- 2017-12-27 CN CN201721861153.0U patent/CN207847672U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989641A (en) * | 2017-12-27 | 2018-05-04 | 中国煤炭科工集团太原研究院有限公司 | Coal mine return air gate road without supporting outfit repeatedly |
| CN107989641B (en) * | 2017-12-27 | 2024-02-06 | 中国煤炭科工集团太原研究院有限公司 | Complete equipment without repeated support for coal mine return air gate roadway |
| CN112576301A (en) * | 2020-12-15 | 2021-03-30 | 郑州煤矿机械集团股份有限公司 | Fully-mechanized mining face transportation crossheading unit support carrying system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180911 Effective date of abandoning: 20240206 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180911 Effective date of abandoning: 20240206 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |