CN111155993A - Automatic coal mining equipment - Google Patents
Automatic coal mining equipment Download PDFInfo
- Publication number
- CN111155993A CN111155993A CN202010251256.5A CN202010251256A CN111155993A CN 111155993 A CN111155993 A CN 111155993A CN 202010251256 A CN202010251256 A CN 202010251256A CN 111155993 A CN111155993 A CN 111155993A
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- Prior art keywords
- coal
- cavity
- rotating shaft
- mining
- swing rod
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- 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.)
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- 239000003245 coal Substances 0.000 title claims abstract description 101
- 238000005065 mining Methods 0.000 title claims abstract description 88
- 210000000078 claw Anatomy 0.000 claims description 27
- 238000005096 rolling process Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/02—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices
-
- 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
- E21C35/20—General features of equipment for removal of chippings, e.g. for loading on conveyor
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- 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)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses equipment for automatically mining coal, which comprises a mining machine body, wherein a cavity I with a leftward opening is arranged in the mining machine body, a rotating shaft I is rotatably arranged in the cavity I, a rocker capable of vertically swinging and adjusting the angle of mining the coal is fixedly arranged on the rotating shaft I, and a cavity II is arranged in the rocker.
Description
Technical Field
The invention relates to the technical field of coal mining, in particular to equipment for automatically mining coal.
Background
Coal mining is the most arduous work, and currently, great force is spent on improving working conditions, the general mining is that a continuous mining machine using a tungsten alloy drill bit breaks coal from the surface on the front side, then the coal is transported to a vehicle waiting for receiving, transported to a conveyer belt and transferred to the ground, a coal mining machine advances for a certain distance, stops moving and then is put in a support, and the process is repeated until a coal seam is mined, so that the mining mode has low mining efficiency and high cost consumption.
Disclosure of Invention
The invention aims to provide equipment for automatically mining coal, which is used for overcoming the defects in the prior art.
The equipment for automatically mining coal comprises a mining machine body, wherein a first cavity with a left opening is formed in the mining machine body, a first rotating shaft is rotatably installed in the first cavity, a rocker capable of vertically swinging to adjust the angle of mining coal is fixedly installed on the first rotating shaft, a second cavity is formed in the rocker, the rocker comprises a second rotating shaft which is rotatably installed in the second cavity and is symmetrically arranged in the front and back direction, a first bevel gear fixedly installed on the second rotating shaft, a roller fixedly installed on the second rotating shaft and a hobbing which is fixedly installed on the roller and can cut a coal bed through rotation so as to realize coal mining, a device capable of conveying the coal which is mined and falls into the machine body is fixedly arranged on the left side of the mining machine body, a third cavity capable of receiving the coal which falls and is mined is arranged on the upper side of the coal mining, the coal mining device comprises a claw hooking groove, a swing rod shaft I, a rotating shaft III, a claw hooking claw I, a conveying belt I, a conveying cavity II, a rotating shaft V and a roller I, wherein the claw hooking groove is symmetrically arranged in the front and back of the coal mining device, the swing rod shaft I is rotatably arranged in the claw hooking groove, the rotating shaft III is rotatably arranged in the claw hooking groove, the claw hooking claw is fixedly arranged on the rotating shaft III and slidably arranged in the claw hooking groove and can convey coal into a machine body through swinging, a conveying cavity I with a left opening is arranged in the mining machine body, a rotating shaft IV is rotatably arranged in the conveying cavity I and is fixedly arranged on the rotating shaft IV, the rotating shaft V is rotatably arranged in the conveying cavity II, and the roller II is fixedly arranged on the rotating shaft V, the two right sides in transportation chamber are equipped with the storage chamber that can store coal, store the chamber with through connection has the output pipeline between the two transportation chambers, two upsides in transportation chamber are equipped with the piston chamber, piston intracavity slidable mounting has the ejector pad, the ejector pad upside sets firmly and can support the backup pad that the upside mine roof prevented the collapse, exploitation organism downside rotates and installs axis of rotation six, the position symmetry around the exploitation organism be equipped with fixed mounting in axis of rotation six last wheels.
On the basis of the technical scheme, a rotating shaft seventh is rotatably installed in the cavity II, a bevel gear II is fixedly installed on the rotating shaft seventh, the bevel gears I on the front side and the rear side are installed in a meshed mode with the bevel gears II, the right side of the rotating shaft seventh is located in the rocker and is in power connection with a motor I, and the front side of the rotating shaft seventh is located in the mining machine body and is in power connection with a motor II.
On the basis of the technical scheme, the coal mining device comprises a cavity IV, a swing rod shaft II, a swing rod I, a swing rod shaft III and a motor III, wherein the cavity IV is arranged in the coal mining device in a front-back symmetrical mode, the swing rod shaft II is rotatably installed in the cavity IV, the swing rod I is hinged with the swing rod shaft II, the swing rod shaft III is hinged with the swing rod I, the swing rod II is hinged with the swing rod shaft III, the motor III is located in the coal mining device and is in power connection with the swing rod shaft II, and the swing rod II is hinged with the swing rod shaft.
On the basis of the technical scheme, the rotating shaft four on the left side is rotatably installed in the coal mining device, the roller wheels one on the left side and the right side are rotatably installed in the conveyor belt one, and the four rear sides of the rotating shaft on the right side are located in the mining machine body and are in power connection with the motor four.
On the basis of the technical scheme, the two idler wheels on the upper side and the lower side are rotatably installed in the second conveyor belt, the feeding plates capable of intermittently feeding coal into the storage cavity are uniformly distributed on the second conveyor belt, and the rear sides of the five rotating shafts are located in the mining machine body and are in power connection with the fifth motor.
On the basis of the technical scheme, a piston is slidably mounted in the piston cavity, a piston rod is fixedly arranged on the upper side of the piston, and the piston rod is fixedly connected with the push block.
The invention has the beneficial effects that: according to the invention, the hobbing rotation cutting of the coal bed is realized through the meshing transmission between the gears, so that the purpose of coal mining is achieved, the falling coal is quickly fed into the machine body through the hinged and matched hook claw, so that the purpose of quick coal mining is achieved, the transportation of the mined coal is realized through belt transmission, and the coal mining efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view showing the overall construction of an apparatus for automatically mining coal according to the present invention;
FIG. 2 is a schematic view of the structure in the direction "A-A" of FIG. 1;
FIG. 3 is a schematic view of the structure in the direction "B-B" in FIG. 1.
Detailed Description
The invention will now be described in detail with reference to fig. 1-3, for the sake of convenience, the orientations described hereinafter being defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
Referring to fig. 1 to 3, an apparatus for automatically mining coal according to an embodiment of the present invention includes a mining machine body 11, a cavity one 21 with a left opening is provided in the mining machine body 11, a rotating shaft one 20 is rotatably installed in the cavity one 21, a rocker 13 capable of adjusting an angle of mining coal by swinging up and down is fixedly installed on the rotating shaft one 20, a cavity two 17 is provided in the rocker 13, the rocker 13 includes a rotating shaft two 18 rotatably installed in the cavity two 17 and symmetrically provided at a front and rear position, a bevel gear one 16 fixedly installed on the rotating shaft two 18, a roller 56 fixedly installed on the rotating shaft two 18, a hobbing 57 fixedly installed on the roller 56 and capable of cutting a coal seam by rotating, so as to achieve coal mining, a coal mining device 28 capable of transporting the mined coal into the machine body is fixedly installed at a left side of the mining machine body 11, a third cavity 54 capable of receiving fallen coal is arranged on the upper side of the coal mining device 28, the coal mining device 28 comprises a claw hooking groove 55 which is arranged in the coal mining device 28 and is symmetrical in front and back position, a swing rod shaft I24 which is rotatably arranged in the claw hooking groove 55, a third rotating shaft 23 which is rotatably arranged in the claw hooking groove 55, a claw 25 which is fixedly arranged on the third rotating shaft 23 and is slidably arranged in the claw hooking groove 55 and can send coal into a machine body through swinging, a first conveyor belt 31 is arranged on the right side of the claw 25, a first transportation cavity 22 with a leftward opening is arranged in the mining machine body 11, a fourth rotating shaft 33 which is rotatably arranged in the first transportation cavity 22 and a first roller 32 which is fixedly arranged on the fourth rotating shaft 33 are symmetrically arranged in the downward 30-degree direction on the left side of the mining machine body 11, and a second transportation cavity 41 is arranged on the right side of the first transportation, the rotation of being equipped with of two 41 upper and lower position symmetries of transportation chamber is installed five 38, the fixed mounting of axis of rotation in two 41 transportation chamber are in two 37 gyro wheels on the five 38 of axis of rotation, two 41 right sides of transportation chamber are equipped with the storage chamber 43 that can store coal, store chamber 43 with through connection has output pipeline 42 between two 41 transportation chambers, two 41 upsides of transportation chamber are equipped with piston chamber 48, slidable mounting has ejector pad 50 in the piston chamber 48, the ejector pad 50 upside has set firmly can support upside mine roof and prevent the backup pad 51 that collapses, exploitation organism 11 downside is rotated and is installed axis of rotation six 46, the symmetry be equipped with fixed mounting around the exploitation organism 11 wheel 45 on the six 46 axes of rotation.
In addition, in an embodiment, a rotating shaft seven 15 is rotatably installed in the cavity two 17, a bevel gear two 19 is fixedly installed on the rotating shaft seven 15, the bevel gears one 16 on the front side and the rear side are installed in a meshed manner with the bevel gears two 19, the motor one 14 is connected to the right side of the rotating shaft seven 15 in the rocker 13 in a power mode, the motor two 12 is connected to the front side of the rotating shaft one 20 in the mining machine body 11 in a power mode, if a left coal seam is to be mined, the motor one 14 is started to drive the rotating shaft seven 15 to rotate, so that the bevel gears two 19 are driven to rotate, the rotating shaft two 18 on the front side and the rear side are driven to rotate through meshed transmission between the gears, so that the roller 56 and the hobbing 57 are driven to rotate, the hobbing 57 is close to the coal.
In addition, in one embodiment, the coal mining device 28 comprises a cavity four 26 which is arranged in the coal mining device 28 and is symmetrical in front and back positions, a swing rod shaft two 27 which is rotatably installed in the cavity four 26, a swing rod one 29 which is hinged with the swing rod shaft two 27, a swing rod shaft three 52 which is hinged with the swing rod one 29, a swing rod two 53 which is hinged with the swing rod shaft three 52, and a motor three 30 which is arranged in the coal mining device 28 and is in power connection with the swing rod shaft two 27, wherein the swing rod two 53 is hinged with the swing rod shaft one 24, if coal is fed onto the conveyor belt one 31, the motor three 30 on the front side and the rear side is started to drive the swing rod shaft two 27 on the front side and the rear side to rotate, so as to drive the swing rod one 29 on the front side and the rear side to rotate, the hook claws 25 on the front side and the rear side are driven to reciprocate along the hook groove 55 through the swing rod two 53 which are hinged, the purpose of transporting coal is realized.
In addition, in one embodiment, the left rotating shaft four 33 is rotatably installed in the coal mining device 28, the left roller wheel one 32 and the right roller wheel one 32 are rotatably installed in the first conveyor belt 31, the rear side of the right rotating shaft four 33 is located in the mining machine body 11 and is in power connection with the motor four 35, if coal is to be fed into the second conveying cavity 41, the motor four 35 is started to drive the rotating shaft four 33 to rotate, so that the roller wheels one 32 are driven to rotate, the coal on the first conveyor belt 31 is driven to be fed into the second conveying cavity 41 through belt transmission, and the purpose of conveying the coal is achieved.
In addition, in one embodiment, the two rollers 37 on the upper side and the lower side are rotatably installed in the two conveyor belts 40, the feeding plates 36 capable of intermittently feeding coal into the storage cavity 43 are uniformly distributed on the two conveyor belts 40, the rear side of the five rotating shaft 38 is positioned in the mining machine body 11, and the five motor 39 is in power connection with the two conveyor belts, if coal is fed into the storage cavity 43, the five motor 39 is started to drive the five rotating shaft 38 to rotate, so that the two rollers 37 are driven to rotate, the feeding plates 36 are driven to rotate through belt transmission, so that coal on the feeding plates 36 is intermittently fed into the storage cavity 43, and the purpose of conveying coal is achieved.
In addition, in one embodiment, a piston 47 is slidably installed in the piston cavity 48, a piston rod 49 is fixedly installed on the upper side of the piston 47, the piston rod 49 is fixedly connected with the push block 50, and if the mine roof is supported to guarantee the safety of coal mining, air in the piston cavity 48 is compressed to drive the piston 47 to push the push block 50 to slide upwards until the support plate 51 is abutted to the mine roof.
In the initial state, the piston 47 is positioned at the extreme lower side of the piston cavity 48, the supporting plate 51 is far away from the mine roof, and the front and rear hook claws 25 are positioned at the extreme end of the hook claw groove 55 far away from the cavity III 54.
When coal needs to be mined, the rocker 13 is driven to rotate through the second starting motor 12, so that the coal mining angle is adjusted, and meanwhile, the first starting motor 14 drives the hobbing gears 57 on the front side and the rear side to rotate, so that coal seams on the left side are cut in a rotating mode, and the purpose of coal mining is achieved.
When needing to transport coal, the third motor 30 through both sides around starting drives colludes claw 25 and carries out reciprocating swing to make coal push on conveyer belt 31, the fourth motor 35 of starting simultaneously drives the coal on conveyer belt 31 through the belt drive and sends into in the transportation chamber two 41, through the fifth motor 39 of starting, thereby drive the coal intermittent type nature that drops on the delivery sheet 36 and send into in storing the chamber 43, realize the purpose of transportation coal.
The invention has the beneficial effects that: according to the invention, the hobbing rotation cutting of the coal bed is realized through the meshing transmission between the gears, so that the purpose of coal mining is achieved, the falling coal is quickly fed into the machine body through the hinged and matched hook claw, so that the purpose of quick coal mining is achieved, the transportation of the mined coal is realized through belt transmission, and the coal mining efficiency is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The utility model provides an automatic equipment of exploiting coal, includes the exploitation organism, its characterized in that: the coal mining device comprises a mining machine body, a first cavity with a leftward opening is formed in the mining machine body, a first rotating shaft is rotatably mounted in the first cavity, a rocker capable of vertically swinging to adjust the coal mining angle is fixedly mounted on the first rotating shaft, a second cavity is formed in the rocker, the rocker comprises a first rotating shaft which is symmetrically arranged in the front and back direction and is rotatably mounted in the second cavity, a first bevel gear fixedly mounted on the second rotating shaft, a roller fixedly mounted on the second rotating shaft and a hobbing fixedly mounted on the roller and capable of cutting a coal bed through rotation to achieve coal mining, a coal mining device capable of conveying coal falling during mining into the mining machine body is fixedly arranged on the left side of the mining machine body, a third cavity capable of receiving the coal falling during mining is arranged on the upper side of the coal mining device, and the coal mining device comprises a claw groove, a, The coal mining machine comprises a swing rod shaft I rotatably installed in a hook claw groove, a rotating shaft III rotatably installed in the hook claw groove, a hook claw fixedly installed on the rotating shaft III and slidably installed in the hook claw groove and capable of feeding coal into a machine body through swinging, a conveyor belt I is arranged on the right side of the hook claw, a first transportation cavity I with a left opening is arranged in the mining machine body, a fourth rotating shaft I rotatably installed in the first transportation cavity I and a first roller fixedly installed on the fourth rotating shaft are symmetrically arranged on the left side of the mining machine body in the downward direction, a second transportation cavity is arranged on the right side of the first transportation cavity, a fifth rotating shaft I rotatably installed in the second transportation cavity and a second roller fixedly installed on the fifth rotating shaft are symmetrically arranged on the second transportation cavity in the vertical direction, a storage cavity capable of storing coal is arranged on the right side of the second transportation cavity, and an output pipeline penetrates between the storage cavity and the second, the two upsides in transportation chamber are equipped with the piston chamber, piston intracavity slidable mounting has the ejector pad, the ejector pad upside sets firmly can support the upside mine roof and prevent the backup pad that collapses, exploitation organism downside rotates and installs axis of rotation six, the position symmetry around the exploitation organism be equipped with fixed mounting in axis of rotation six last wheel.
2. An apparatus for automatically mining coal as claimed in claim 1, wherein: a rotating shaft seventh is rotatably installed in the cavity II, a bevel gear II is fixedly installed on the rotating shaft seventh, the bevel gears I on the front side and the rear side are installed in a meshed mode with the bevel gears II, the right side of the rotating shaft seventh is located in the rocker and is dynamically connected with a motor I, and the front side of the rotating shaft I is located in the mining machine body and is dynamically connected with a motor II.
3. An apparatus for automatically mining coal as claimed in claim 1, wherein: the coal mining device comprises a cavity IV, a swing rod shaft II, a swing rod I, a swing rod shaft III and a motor III, wherein the cavity IV is positioned in the coal mining device, the swing rod shaft II is rotatably installed in the cavity IV, the swing rod I is hinged with the swing rod shaft II, the swing rod shaft III is hinged with the swing rod I, the swing rod II is hinged with the swing rod shaft III, the motor III is positioned in the coal mining device and is in power connection with the swing rod shaft II, and the swing rod II is hinged with the swing rod shaft I.
4. An apparatus for automatically mining coal as claimed in claim 1, wherein: the four rotating shafts on the left side are rotatably installed in the coal mining device, the first rolling wheels on the left side and the right side are rotatably installed in the first conveying belt, and the four rear sides of the rotating shafts on the right side are located in the mining machine body and are dynamically connected with a fourth motor.
5. An apparatus for automatically mining coal as claimed in claim 1, wherein: the two idler wheels are rotatably installed in the two conveying belts, the two conveying belts are uniformly distributed and provided with feeding plates capable of intermittently feeding coal into the storage cavity, and the five rear sides of the rotating shaft are located in the mining machine body and are dynamically connected with a five motor.
6. An apparatus for automatically mining coal as claimed in claim 1, wherein: a piston is slidably mounted in the piston cavity, a piston rod is fixedly arranged on the upper side of the piston, and the piston rod is fixedly connected with the push block.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010251256.5A CN111155993A (en) | 2020-04-01 | 2020-04-01 | Automatic coal mining equipment |
| GBGB2008460.4A GB202008460D0 (en) | 2020-04-01 | 2020-06-05 | An equipment for automatically mining coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010251256.5A CN111155993A (en) | 2020-04-01 | 2020-04-01 | Automatic coal mining equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111155993A true CN111155993A (en) | 2020-05-15 |
Family
ID=70567877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010251256.5A Withdrawn CN111155993A (en) | 2020-04-01 | 2020-04-01 | Automatic coal mining equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111155993A (en) |
| GB (1) | GB202008460D0 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110924948A (en) * | 2019-12-20 | 2020-03-27 | 广州力寄采矿设备有限公司 | Excavator capable of automatically conveying broken stones |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4328996A (en) * | 1979-07-11 | 1982-05-11 | Gebr. Eickhoff Maschinenfabrik Und Eisengiesserei M.B.H. | Cutter drum support arm for longwall mining machine |
| CN1847614A (en) * | 2005-04-15 | 2006-10-18 | Dbt有限公司 | Underground mining machine |
| CN2900787Y (en) * | 2006-05-10 | 2007-05-16 | 江阴市巨鹰机械有限公司 | Small coal mine tunnel tunnelling machine |
| CN103562495A (en) * | 2011-05-16 | 2014-02-05 | 卡特彼勒环球矿业欧洲有限公司 | Apparatus for the milling cutting of rock, minerals or other materials |
| CN109538203A (en) * | 2019-01-14 | 2019-03-29 | 太重煤机有限公司 | The cutting means of vertical shearer |
| CN109653744A (en) * | 2019-01-14 | 2019-04-19 | 黄祖华 | A kind of walking rock digger |
| CN110671106A (en) * | 2019-09-30 | 2020-01-10 | 湖北文理学院理工学院 | Mining quarrying chain type cutting locomotive |
| CN210087313U (en) * | 2019-04-18 | 2020-02-18 | 江苏中机矿山设备有限公司 | Coal mining machine cutting mechanism suitable for coal seam difficult to mine and coal mining machine |
-
2020
- 2020-04-01 CN CN202010251256.5A patent/CN111155993A/en not_active Withdrawn
- 2020-06-05 GB GBGB2008460.4A patent/GB202008460D0/en not_active Ceased
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4328996A (en) * | 1979-07-11 | 1982-05-11 | Gebr. Eickhoff Maschinenfabrik Und Eisengiesserei M.B.H. | Cutter drum support arm for longwall mining machine |
| CN1847614A (en) * | 2005-04-15 | 2006-10-18 | Dbt有限公司 | Underground mining machine |
| CN2900787Y (en) * | 2006-05-10 | 2007-05-16 | 江阴市巨鹰机械有限公司 | Small coal mine tunnel tunnelling machine |
| CN103562495A (en) * | 2011-05-16 | 2014-02-05 | 卡特彼勒环球矿业欧洲有限公司 | Apparatus for the milling cutting of rock, minerals or other materials |
| CN109538203A (en) * | 2019-01-14 | 2019-03-29 | 太重煤机有限公司 | The cutting means of vertical shearer |
| CN109653744A (en) * | 2019-01-14 | 2019-04-19 | 黄祖华 | A kind of walking rock digger |
| CN210087313U (en) * | 2019-04-18 | 2020-02-18 | 江苏中机矿山设备有限公司 | Coal mining machine cutting mechanism suitable for coal seam difficult to mine and coal mining machine |
| CN110671106A (en) * | 2019-09-30 | 2020-01-10 | 湖北文理学院理工学院 | Mining quarrying chain type cutting locomotive |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110924948A (en) * | 2019-12-20 | 2020-03-27 | 广州力寄采矿设备有限公司 | Excavator capable of automatically conveying broken stones |
| CN110924948B (en) * | 2019-12-20 | 2021-06-11 | 浙江新信华电子科技有限公司 | Excavator capable of automatically conveying broken stones |
Also Published As
| Publication number | Publication date |
|---|---|
| GB202008460D0 (en) | 2020-07-22 |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200515 |
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| WW01 | Invention patent application withdrawn after publication |