CN104153777B - Mining rock gangway speedy drivage machine - Google Patents
Mining rock gangway speedy drivage machine Download PDFInfo
- Publication number
- CN104153777B CN104153777B CN201410379077.4A CN201410379077A CN104153777B CN 104153777 B CN104153777 B CN 104153777B CN 201410379077 A CN201410379077 A CN 201410379077A CN 104153777 B CN104153777 B CN 104153777B
- Authority
- CN
- China
- Prior art keywords
- girder
- saddletree
- cutter head
- boots
- support
- 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.)
- Active
Links
- 239000011435 rock Substances 0.000 title claims abstract description 30
- 238000005065 mining Methods 0.000 title claims abstract description 27
- 230000005641 tunneling Effects 0.000 claims description 20
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 238000005453 pelletization Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 abstract description 6
- 239000003245 coal Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a kind of mining rock gangway speedy drivage machine, have girder, girder is arranged with support shoe system, support boots and back brace boots before support shoe system comprises, front support boots comprise front saddletree, and back brace boots comprise rear saddletree; Forward and backward saddletree has the rectangular channel passed for development machine girder, the left and right opposing sidewalls being positioned at the rectangular channel that described front saddletree passes for development machine girder is formed with longitudinal tuning face of cylinder of the horizontal pivot angle of adjustable development machine girder; The left and right opposing sidewalls of the rectangular channel that described front saddletree passes for development machine girder has longitudinal fluting, longitudinal fluting has the bar blocks of cylindroid built with outside, the thickness of bar blocks is greater than the degree of depth of longitudinal fluting, and bar blocks matches with longitudinal fluting and forms described longitudinal tuning face of cylinder.The present invention can adjust the pivot angle scope of development machine by the thickness controlling bar blocks, can adapt to the excavation operation in coal rock tunnel well, can improve drivage efficiency during excavation operation.
Description
Technical field
The present invention relates to a kind of mining rock gangway speedy drivage machine.
Background technology
Mining rock gangway speedy drivage machine is mainly used in coal rock tunnelling operation, mining its structure of rock gangway speedy drivage machine of the prior art mainly comprises girder, girder is arranged with support shoe system, tunneling boring cutterhead is equipped with by gear-box in girder front end, before described girder, before back segment is equipped with respectively, rear support, the girder at support shoe system rear portion is equipped with jumbolter, girder is built with first conveyor, second conveyor and trailer are equipped with in the rear portion of girder, support boots and back brace boots before described support shoe system comprises, front support boots are connected by coupling bar with back brace boots, before described, support boots support boots plate before comprising, front saddletree and front support boots oil cylinder, front support boots oil cylinder is contained on front saddletree, described back brace boots comprise back brace boots plate, rear saddletree and back brace boots oil cylinder, back brace boots oil cylinder is contained on rear saddletree, before described, before back brace boots oil cylinder is contained in respectively by cylinder piston rod head, on back brace boots plate, described forward and backward saddletree has the rectangular channel passed for development machine girder.Mining rock gangway speedy drivage machine needs the level angle constantly adjusting development machine when excavation operation, ensure tunneling direction with design tunnel direction depart from allowed band, above-mentioned mining rock gangway speedy drivage machine of the prior art is realized by left and right translation support shoe system and girder at adjustment development machine level angle, the level angle one adjusting development machine by left and right translation support shoe system and girder is increased the labour intensity of workman, also need to spend the longer time simultaneously, two is that the level angle adjusting range of development machine is less, have impact on the operating efficiency of development machine.The size of the tunneling boring cutterhead of above-mentioned mining rock gangway speedy drivage machine of the prior art is general all larger in addition, due to the transport space relative narrowness of underground coal mine, in addition the limited space of cage, makes going into the well and becoming more and more difficult at underground transportation of tunneling boring cutterhead.
Summary of the invention
The technical problem to be solved in the present invention be to provide the adjustment of a kind of development machine horizontal pivot angle flexibly, adjusting range is large, to save time when adjusting the horizontal pivot angle of development machine, laborsaving, thus effectively can improve the mining rock gangway speedy drivage machine of development machine excavation operation efficiency.
For solving the problems of the technologies described above, the present invention is mining rock gangway speedy drivage machine, there is girder, girder is arranged with support shoe system, tunneling boring cutterhead is equipped with by gear-box in girder front end, before described girder, before back segment is equipped with respectively, rear support, the girder at support shoe system rear portion is equipped with jumbolter, girder is built with first conveyor, second conveyor and trailer are equipped with in the rear portion of girder, support boots and back brace boots before described support shoe system comprises, front support boots are connected by coupling bar with back brace boots, before described, support boots support boots plate before comprising, front saddletree and front support boots oil cylinder, front support boots oil cylinder is contained on front saddletree, described back brace boots comprise back brace boots plate, rear saddletree and back brace boots oil cylinder, back brace boots oil cylinder is contained on rear saddletree, before described, before back brace boots oil cylinder is contained in respectively by cylinder piston rod head, on back brace boots plate, described forward and backward saddletree has the rectangular channel passed for development machine girder, the left and right opposing sidewalls being positioned at the rectangular channel that described front saddletree passes for development machine girder is formed with longitudinal tuning face of cylinder of the horizontal pivot angle of adjustable development machine girder.
Adopt the mining rock gangway speedy drivage machine of said structure, owing to being positioned at a left side for the rectangular channel that described front saddletree passes for development machine girder, right opposing sidewalls is formed with longitudinal tuning face of cylinder of the horizontal pivot angle of adjustable development machine girder, when mining rock gangway speedy drivage machine operation needs the angle adjusting development machine, push-and-pull is only needed to support the girder at shoe system rear portion, girder entirety can with the left side in rectangular channel, longitudinal tuning face of cylinder in right opposing sidewalls is that fulcrum is done clockwise or rotates counterclockwise, correspondingly development machine can produce the clockwise or counterclockwise pivot angle of level in a big way, the excavation operation in coal rock tunnel can be adapted to well, thus drivage efficiency of the present invention can be improved, owing to being the girder at push-and-pull support shoe system rear portion, change the mode of traditional integral translation girder and support shoe system, also the labour intensity of workman is reduced to a great extent, namely to save time and laborsaving.
As a modification of the present invention, the cylinder piston rod head of described forward and backward support boots oil cylinder is equipped with oscillating bearing.By the technical characteristic adopting the cylinder piston rod head of forward and backward support boots oil cylinder that oscillating bearing is housed, conveniently can realize support boots plate to the compliance of irregular hole wall, the support boots plate of support shoe system can be supported on the hole wall of stone head both sides securely, be conducive to the excavation operation of development machine.
As another improvement of the present invention, the arranged on left and right sides of described forward and backward saddletree is equipped with forward and backward guide peg respectively, and forward and backward guide peg is loaded on described front and back support boots plate by oscillating bearing.Adopt the arranged on left and right sides of forward and backward saddletree that forward and backward guide peg is housed respectively, after forward and backward guide peg is loaded on the technical characteristic on described front and back support boots plate by oscillating bearing, can prevent support boots plate downward landing of relative saddletree before not touching hole wall of supportting shoe system on the one hand, guide peg is fixed on support boots plate by oscillating bearing and can adapts to support small angle oscillation when boots plate is supported on the wall of hole on the other hand.
As a further improvement on the present invention, the left and right opposing sidewalls of the rectangular channel that described front saddletree passes for development machine girder has longitudinal fluting, longitudinal fluting has the bar blocks of cylindroid built with outside, the thickness of bar blocks is greater than the degree of depth of longitudinal fluting, and bar blocks matches with longitudinal fluting and forms described longitudinal tuning face of cylinder.Adopt bar blocks to match with longitudinal fluting and form the technical characteristic on described longitudinal tuning face of cylinder, the structure not only making the support shoe system in the present invention's mining rock gangway speedy drivage machine is relatively simple, and can be adjusted the pivot angle scope of development machine by the thickness controlling bar blocks when adjusting the horizontal pivot angle of development machine by push-and-pull girder in actual applications.
As another improvement of the present invention, described tunneling boring cutterhead is made up of large cutter head and little cutter head, large cutter head and little cutter head have the large cutter head face and little cutter head face of matching, described large cutter head and little cutter head pass through high strength exploitation, large cutter head is furnished with central hob, swivel joint installing rack, swivel joint, manhole door-plate and a fortune deflector chute, large and small cutter head along the circumferential direction respectively interval be furnished with positive hobboing cutter and scraper, large and small cutter head is respectively equipped with the sliding slag chute transported deflector chute with described and link up.Adopt the tunneling boring cutterhead of the mining rock gangway speedy drivage machine of said structure, because tunneling boring cutterhead is made up of large cutter head and little cutter head, and large cutter head and little cutter head pass through high strength exploitation, be actually a tunneling boring cutterhead and become split type, tunneling boring cutterhead can be carried out split and assembling, go into the well and underground transportation time tunneling boring cutterhead can be split into large cutter head and little cutter head, be convenient to like this go into the well and underground transportation, again tunneling boring cutter disc groups dressed up one when development machine operation.
Further improve as of the present invention, described in the large cutter head face of matching and little cutter head face be that cascaded surface coordinates.Practice shows, large cutter head face and little cutter head face adopt cascaded surface to match, the changing of the relative positions power produced between large and small cutter head when effectively can reduce the operation of tunneling boring cutterhead when large and small cutter head to be assembled into one by bolt, effectively can prevent the damage of large and small cutter head parts, the whole service life of tunneling boring cutterhead can be extended.
Dedusting fan and water spray dust pelletizing system described trailer can also be equipped with.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 is the main TV structure schematic diagram of the present invention's mining rock gangway speedy drivage machine.
Fig. 2 is the plan structure schematic diagram of the present invention's mining rock gangway speedy drivage machine.
Fig. 3 is the plan structure schematic diagram of the support shoe system in the present invention's mining rock gangway speedy drivage machine.
Fig. 4 is that the C of Fig. 3 is to structural representation.
Fig. 5 is the I place structure for amplifying schematic diagram of Fig. 4, the structure of the rectangular channel inside wall that the front saddletree showing the longitudinal tuning face of cylinder being formed with the horizontal pivot angle of adjustable development machine girder passes for development machine girder.
Fig. 6 is the A-A line sectional structure schematic diagram along Fig. 5.
Fig. 7 analyses and observe structure for amplifying schematic diagram along the B-B line of Fig. 4.
Fig. 8 is that the master of tunneling boring cutterhead in the present invention's mining rock gangway speedy drivage machine looks fractionation structural representation.
Fig. 9 is the backsight structural representation of Fig. 8.
Figure 10 is that tunneling boring cutterhead in the present invention's mining rock gangway speedy drivage machine installs main TV structure schematic diagram when linking into an integrated entity by bolt.
Detailed description of the invention
See Fig. 1-Fig. 7, first see Fig. 1, Fig. 2, the present invention is mining rock gangway speedy drivage machine, have girder 1, girder 1 is arranged with support shoe system 2, tunneling boring cutterhead 4 is equipped with by gear-box 3 in girder 1 front end, the front and rear sections of described girder 1 is equipped with back and front supporting 5,6 respectively, the girder 1 at support shoe system 2 rear portion is equipped with jumbolter 7, and girder 1 is built with first conveyor 8, and second conveyor 9 and trailer 10 are equipped with in the rear portion of girder 1.See Fig. 3-Fig. 7, support boots 201 and back brace boots 202 before described support shoe system 2 comprises, front support boots 201 are connected by coupling bar 203 with back brace boots 202, before described, support boots 201 support boots plate 204, front saddletree 205 and front support boots oil cylinder 206 before comprising, front support boots oil cylinder 206 is contained on front saddletree 205, described back brace boots 202 comprise back brace boots plate 207, rear saddletree 208 and back brace boots oil cylinder 209, back brace boots oil cylinder 209 is contained on rear saddletree 208, and described forward and backward support boots oil cylinder 206,209 is contained on forward and backward support boots plate 204,207 respectively by cylinder piston rod head 214; Described forward and backward saddletree 205,208 has the rectangular channel passed for development machine girder, the left and right opposing sidewalls being positioned at the rectangular channel that described front saddletree 205 passes for development machine girder is formed with longitudinal tuning face of cylinder 210 of the horizontal pivot angle of adjustable development machine girder.The cylinder piston rod head 214 of described forward and backward support boots oil cylinder 206,209 is equipped with oscillating bearing 213.The arranged on left and right sides of described forward and backward saddletree 205,208 is equipped with forward and backward guide peg 215,216 respectively, and forward and backward guide peg 215,216 is loaded on described front and back support boots plate 204,207 by oscillating bearing.The left and right opposing sidewalls of the rectangular channel that described front saddletree 205 passes for development machine girder has longitudinal fluting 211, longitudinal fluting 211 has the bar blocks 212 of cylindroid built with outside, the thickness of bar blocks 212 is greater than the degree of depth of longitudinal fluting 211, and bar blocks 212 matches with longitudinal fluting 211 and forms described longitudinal tuning face of cylinder 210.
See Fig. 8-Figure 10, described tunneling boring cutterhead 4 is made up of large cutter head 410 and little cutter head 420, large cutter head 410 and little cutter head 420 have the large cutter head face 401 and little cutter head face 402 of matching, described large cutter head 410 is connected by high-strength bolt 430 with little cutter head 420, large cutter head 410 is furnished with central hob 411, swivel joint installing rack 412, swivel joint 413, manhole door-plate 414 and a fortune deflector chute 415, greatly, little cutter head 410, 420 along the circumferential direction respectively interval be furnished with positive hobboing cutter 403 and scraper 404, greatly, little cutter head 410, the sliding slag chute 405 transported deflector chute 415 with described one and link up is respectively equipped with on 420.Described large cutter head face 401 of matching and little cutter head face 402 are that cascaded surface coordinates.
Dedusting fan 11 and water spray dust pelletizing system 12 described trailer 10 be equipped with again see Fig. 1, Fig. 2.
Claims (6)
1. a mining rock gangway speedy drivage machine, there is girder (1), girder (1) is arranged with support shoe system (2), tunneling boring cutterhead (4) is equipped with by gear-box (3) in girder (1) front end, before described girder (1), before back segment is equipped with respectively, rear support (5, 6), the girder (1) at support shoe system (2) rear portion is equipped with jumbolter (7), girder (1) is built with first conveyor (8), second conveyor (9) and trailer (10) are equipped with in the rear portion of girder (1), support boots (201) and back brace boots (202) before described support shoe system (2) comprises, front support boots (201) are connected by coupling bar (203) with back brace boots (202), before described, support boots (201) supports boots plate (204) before comprising, front saddletree (205) and front support boots oil cylinder (206), front support boots oil cylinder (206) is contained on front saddletree (205), described back brace boots (202) comprise back brace boots plate (207), rear saddletree (208) and back brace boots oil cylinder (209), back brace boots oil cylinder (209) is contained on rear saddletree (208), before described, back brace boots oil cylinder (206, 209) before being contained in respectively by cylinder piston rod head (214), back brace boots plate (204, 207) on, before described, rear saddletree (205, 208) there is the rectangular channel passed for development machine girder, be positioned at a left side for the rectangular channel that described front saddletree (205) is passed for development machine girder, right opposing sidewalls is formed with longitudinal tuning face of cylinder (210) of the horizontal pivot angle of adjustable development machine girder, it is characterized in that: a left side for the rectangular channel that described front saddletree (205) passes for development machine girder, right opposing sidewalls has longitudinal fluting (211), longitudinal fluting (211) has the bar blocks (212) of cylindroid built with outside, the thickness of bar blocks (212) is greater than the degree of depth of longitudinal fluting (211), bar blocks (212) matches with longitudinal fluting (211) and forms described longitudinal tuning face of cylinder (210).
2. according to mining rock gangway speedy drivage machine according to claim 1, it is characterized in that: the cylinder piston rod head (214) of described forward and backward support boots oil cylinder (206,209) is equipped with oscillating bearing (213).
3. according to mining rock gangway speedy drivage machine according to claim 1, it is characterized in that: the arranged on left and right sides of described forward and backward saddletree (205,208) is equipped with forward and backward guide peg (215,216) respectively, forward and backward guide peg (215,216) is loaded on described forward and backward support boots plate (204,207) by oscillating bearing.
4. according to mining rock gangway speedy drivage machine according to claim 1, it is characterized in that: described tunneling boring cutterhead (4) is made up of large cutter head (410) and little cutter head (420), large cutter head (410) and little cutter head (420) have the large cutter head face (401) and little cutter head face (402) matched, described large cutter head (410) is connected by high-strength bolt (430) with little cutter head (420), large cutter head (410) is furnished with central hob (411), swivel joint installing rack (412), swivel joint (413), manhole door-plate (414) and fortune deflector chute (415), greatly, little cutter head (410, 420) along the circumferential direction interval is furnished with positive hobboing cutter (403) and scraper (404) respectively, greatly, little cutter head (410, 420) the sliding slag chute (405) transported deflector chute (415) with described and link up is respectively equipped with on.
5., according to mining rock gangway speedy drivage machine according to claim 4, it is characterized in that: described in the large cutter head face (401) matched and little cutter head face (402) be that cascaded surface coordinates.
6. according to mining rock gangway speedy drivage machine according to claim 1, it is characterized in that: described trailer (10) is equipped with dedusting fan (11) and water spray dust pelletizing system (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410379077.4A CN104153777B (en) | 2014-08-04 | 2014-08-04 | Mining rock gangway speedy drivage machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410379077.4A CN104153777B (en) | 2014-08-04 | 2014-08-04 | Mining rock gangway speedy drivage machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104153777A CN104153777A (en) | 2014-11-19 |
| CN104153777B true CN104153777B (en) | 2016-02-03 |
Family
ID=51879388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410379077.4A Active CN104153777B (en) | 2014-08-04 | 2014-08-04 | Mining rock gangway speedy drivage machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104153777B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420111B (en) * | 2017-07-12 | 2018-11-20 | 中交第二航务工程局有限公司 | Adjust the auxiliary device and its construction of shield machine hinged oil cylinder hinge angle |
| CN111911178B (en) * | 2020-08-14 | 2022-08-09 | 北方重工集团有限公司 | Main beam inverted open-type tunnel boring machine applied to coal mine rock roadway construction |
| CN112682054B (en) * | 2020-12-03 | 2022-08-23 | 重庆文理学院 | Excavating equipment for TBM construction monitoring and surveying method thereof |
| CN114427465B (en) * | 2021-12-28 | 2024-05-03 | 北方重工集团有限公司 | Coal mine rock roadway shoulder coal peeling device applied to TBM tunneling machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337899A (en) * | 2011-08-30 | 2012-02-01 | 中国铁建重工集团有限公司 | Direction-adjusting device for open-type full-section hard rock tunneling machine |
| CN102691506A (en) * | 2012-06-29 | 2012-09-26 | 北方重工集团有限公司 | Spherical support girder turning mechanism for open-type hard-rock boring machines |
| CN203742607U (en) * | 2013-12-23 | 2014-07-30 | 中铁工程装备集团有限公司 | Short distance coinciding fracture surface heading machine |
| CN204060689U (en) * | 2014-08-04 | 2014-12-31 | 辽宁通用煤机装备制造股份有限公司 | Mining rock gangway speedy drivage machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11241588A (en) * | 1998-02-23 | 1999-09-07 | Planet:Kk | Excavation propulsion device |
| JP4203559B2 (en) * | 2003-12-25 | 2009-01-07 | 大成建設株式会社 | Attitude control device and method for digging shield machine using the same |
-
2014
- 2014-08-04 CN CN201410379077.4A patent/CN104153777B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337899A (en) * | 2011-08-30 | 2012-02-01 | 中国铁建重工集团有限公司 | Direction-adjusting device for open-type full-section hard rock tunneling machine |
| CN102691506A (en) * | 2012-06-29 | 2012-09-26 | 北方重工集团有限公司 | Spherical support girder turning mechanism for open-type hard-rock boring machines |
| CN203742607U (en) * | 2013-12-23 | 2014-07-30 | 中铁工程装备集团有限公司 | Short distance coinciding fracture surface heading machine |
| CN204060689U (en) * | 2014-08-04 | 2014-12-31 | 辽宁通用煤机装备制造股份有限公司 | Mining rock gangway speedy drivage machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104153777A (en) | 2014-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104153777B (en) | Mining rock gangway speedy drivage machine | |
| CN203430527U (en) | Shield type continuous tunneling and anchoring machine | |
| CN109538224B (en) | A new type of coal tunnel fast boring machine | |
| CN104747201B (en) | Rapid drivage-anchoring integrated equipment for coal road under instable surrounding rock condition | |
| CN102733803A (en) | Compound cantilever excavator | |
| CN102094664B (en) | Hydraulic bracket for end of comprehensive mechanized filling coal face | |
| CN102606152A (en) | Novel quick digging and anchoring integrated machine for rectangular coal roadway | |
| CN102808617A (en) | Comprehensive mechanical stone drift digging anchor machine | |
| CN108756875B (en) | A device and method for continuous mining of medium-thick coal seams in inner-discharge open-pit coal mines | |
| CN207647510U (en) | A kind of pick of coal working face, dress, shield change system | |
| CN112983448B (en) | Novel TBM of DSIS | |
| CN108131140A (en) | A kind of cantilevered longitudinal axis anchor driving machine with distant control function | |
| CN104632233A (en) | Mechanical repair technology of distortional roadway and roadway repair machine | |
| CN204060689U (en) | Mining rock gangway speedy drivage machine | |
| CN206190289U (en) | Shape of a hoof shield excavation device in anhydrous weak soil tunnel | |
| CN100538012C (en) | Filling gangue hydraulic support | |
| CN106437734B (en) | The shape of a hoof shield excavating device and tunnel excavation method of anhydrous soft soil tunnel | |
| CN109751078A (en) | A kind of coal working face end trigonum device for filling and method | |
| CN105401951A (en) | Common gangue removal method and system for dual rock roadways of coal mine | |
| CN104295295A (en) | Large-gradient drilling and tunneling machine | |
| CN205154176U (en) | Two rock gangway sharing discharge refuse systems in colliery | |
| CN204140065U (en) | Heavy grade rock drilling development machine | |
| CN104234712B (en) | A kind of there is top coal recovery device fell and transport coal all-in-one | |
| CN102587907B (en) | Two-arm gangue discharge system | |
| CN203961984U (en) | The support shoe system of mining rock gangway speedy drivage machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 112700 tiaobingshan South Industrial Park, Tieling City, Liaoning Province Patentee after: Liaoning general Heavy Machinery Co.,Ltd. Address before: 112700 tiaobingshan South Industrial Park, Tieling City, Liaoning Province Patentee before: LIAONING GENERAL MINING MACHINERY EQUIPMENT MANUFACTURING Co.,Ltd. |