CN107998537B - Mining gangue fire protection device - Google Patents
Mining gangue fire protection device Download PDFInfo
- Publication number
- CN107998537B CN107998537B CN201711278135.4A CN201711278135A CN107998537B CN 107998537 B CN107998537 B CN 107998537B CN 201711278135 A CN201711278135 A CN 201711278135A CN 107998537 B CN107998537 B CN 107998537B
- Authority
- CN
- China
- Prior art keywords
- coal gangue
- guide pipe
- groove
- rod body
- hollow rod
- 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
- 238000005065 mining Methods 0.000 title claims description 11
- 239000003245 coal Substances 0.000 claims abstract description 66
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 238000007569 slipcasting Methods 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims description 19
- 239000002002 slurry Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 5
- 230000008676 import Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 238000007789 sealing Methods 0.000 abstract description 6
- 230000008595 infiltration Effects 0.000 abstract description 2
- 238000001764 infiltration Methods 0.000 abstract description 2
- 238000005056 compaction Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000010878 waste rock Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/06—Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a mine coal gangue fireproof device and discloses a coal gangue fireproof grouting device capable of grouting deeper positions and different depths of a coal gangue pile. Can carry out the slip casting to the deeper position and the different degree of depth of coal gangue heap, the slip casting effect is better to can open around the gangue top when slip casting, the infiltration of the thick liquid of being convenient for. The drill bit is arranged on the other end of the main body rod, the cross section of the drill bit is of a triangular structure, threads are arranged on the inner wall of the main body rod, a plurality of rotating grooves are formed in the main body rod, the rotating grooves are distributed in a staggered mode and composed of transverse grooves and vertical grooves, sealing gaskets are arranged in the vertical grooves, the transverse grooves and the vertical grooves of the rotating grooves are communicated with the inside and the outside of the main body respectively, and a liquid drainage channel is formed in the drill bit.
Description
Technical Field
The invention discloses a mine coal gangue fireproof device, relates to a grouting device used for preventing fire of a coal gangue pile on a coal mine, and belongs to the field of mining equipment. In particular to a coal gangue fireproof grouting device capable of grouting deeper positions and different depths of a coal gangue pile.
Background
At present, in the field of coal mines, solid wastes such as coal gangue and the like are often generated in the coal mining process and the coal washing process and are generally stacked in a centralized manner, the situation that the coal gangue piled and pressed for a long time easily has spontaneous combustion, fire disasters easily occur due to improper treatment, serious threats are caused to surrounding environments and personnel, fire prevention measures in the process of stacking the coal gangue are of great importance, the temperature in the coal gangue can be effectively reduced by generally carrying out grouting operation on the inner part of the coal gangue, the fire prevention effect of the coal gangue pile is better, the conventional grouting mode of the coal gangue pile is that grout is directly poured at the top of the coal gangue pile, the grouting effect of partial coal gangue at a deeper position is poorer, and the conventional grouting device, such as a publication No. CN206439061U, discloses a novel expansion grouting anchor rod which comprises an expansion block, an expansion body, an anchoring steel plate, a circular base plate, a nut, a grout stop plug and a grouting gasket, and, its main part is slip casting stock, its characterized in that: the afterbody of slip casting stock place an expansion device, including inflation piece and inflation body, the slip casting stock body of rod divide into two steel sheets, slip casting stock head connect and set up the nut, when using the device to carry out the slip casting, with the inside back of rock is gone into to the stock, the revolving force of stock can be with the waste rock compaction around the stock when drilling down, the thick liquid in the stock is difficult to ooze from the stock side, carries out the slip casting effect to the waste rock different degree of depth poor, the result of use is not good.
Disclosure of Invention
In order to improve the situation, the invention provides a coal gangue fireproof grouting device capable of grouting at deeper positions and different depths of a coal gangue pile. Can carry out the slip casting to the deeper position and the different degree of depth of coal gangue heap, the slip casting effect is better to can open around the gangue top when slip casting, the infiltration of the thick liquid of being convenient for.
The invention relates to a mine coal gangue fireproof device, which is realized by the following steps: the invention relates to a mining coal gangue fireproof device which comprises a main body device and a grouting device, wherein the main body device comprises a supporting plate, a main body rod, a drill bit, a sealing gasket and a rotating groove, the supporting plate is arranged at one end of the main body rod, the supporting plate is of an annular plate-shaped structure, a rubber pad is arranged on the supporting plate, the main body rod is of a hollow structure, the drill bit is arranged at the other end of the main body rod, the cross section of the drill bit is of a triangular structure, threads are arranged on the inner wall of the main body rod, a plurality of rotating grooves are formed in the main body rod, the plurality of rotating grooves are distributed in a staggered mode, each rotating groove comprises a transverse groove and a vertical groove, the sealing gasket is arranged in each vertical groove, the transverse groove and the vertical groove of each rotating groove are respectively communicated with the inside and outside of the main body, and the grouting device comprises a flow guide pipe, a hollow, The rotary drill comprises a rotary sleeve and a rotary ball, wherein a liquid drainage channel is arranged on a drill bit and is of a shape like a Chinese character 'ji', an inlet and two outlets are arranged on the liquid drainage channel, filter screens are respectively arranged in the two outlets of the liquid drainage channel, a guide pipe is arranged in a main rod body, one end of the guide pipe is connected with a drill bit, the inlet of the guide pipe is communicated with the inlet of the liquid drainage channel, a hollow rod is arranged in the main rod body, one end of the hollow rod is sleeved on the other end of the guide pipe, the hollow rod is communicated with the guide pipe, the outer side of the hollow rod is not contacted with the inner wall of the main rod body, a pressing block is arranged in one end of the main rod body and is positioned above the hollow rod, threads are arranged on the outer side of the pressing block and are meshed with the threads on the inner wall of the main rod body, a plurality of rotary sleeves are respectively arranged on the hollow rod and, the honeycomb duct is arranged in the rotating groove and is connected with the main rod body through the fixing pin, the honeycomb duct is L-shaped, one end of the honeycomb duct is arranged in the vertical groove of the rotating groove and is attached to the sealing gasket, the other end of the honeycomb duct penetrates through the through groove in the rotating ball and is arranged in the hollow rod, the other end of the honeycomb duct is bent upwards, and the other end of the honeycomb duct is provided with a pulp inlet groove and is communicated with the hollow rod.
When the coal gangue pile grouting device is used, when grouting is carried out on the coal gangue pile, one end of the main rod body is firstly connected with an external motor, the pressing block is connected with an external slurry pipe, the external motor works to drive the main rod body to rotate, the main rod body drives the drill bit to rotate, the main rod body is further driven to drill into the coal gangue pile, after the coal gangue pile is drilled to a preset depth, the external motor stops working, the sleeve wrench is used for rotating the pressing block, the pressing block rotates downwards along the main rod body, the pressing block further presses the hollow rod downwards, one end of the hollow rod slides downwards along the guide pipe, the hollow rod downwards presses the plurality of flow guide pipes in the sliding process, the plurality of flow guide pipes respectively rotate around the connected fixed pins under the downward pressure, and respectively drive the connected rotating balls to upwards and downwards turn in the corresponding rotating sleeves, and then one ends of the plurality of flow guide pipes respectively extend out of the vertical grooves corresponding to the rotating, the slurry enters the hollow rod through the pressing block, part of the slurry in the hollow rod directly flows downwards along the hollow rod to enter the guide pipe, then flows into the liquid drainage channel, flows into the deepest position of the coal gangue pile under the drill through two outlets of the liquid drainage channel, and the other part of the slurry in the hollow rod flows into the plurality of guide pipes through the slurry inlet grooves on the plurality of guide pipes respectively, then flows along the guide pipes, flows out from one end of the guide pipes and flows into different depths of the coal gangue pile respectively;
the design that the rubber pad is arranged on the supporting plate can protect the supporting plate and prevent the supporting plate from being damaged when the supporting plate is contacted with the coal gangue;
the design that the plurality of rotating grooves are distributed in a staggered mode enables the guide pipes to be distributed in each position of the main rod body in a staggered mode, and therefore grouting is conducted on different depths of the coal gangue pile;
the two outlets of the liquid drainage channel are respectively provided with a filter screen, so that the liquid drainage channel can be protected when a drill is put down, and drill residues are prevented from entering the liquid drainage channel to block the liquid drainage channel;
the design that the outer side of the hollow rod is not in contact with the inner wall of the main rod body enables the hollow rod to move downwards along the main rod body, no friction force exists between the hollow rod and the inner wall of the main rod body, and therefore the hollow rod can move downwards conveniently;
the flow guide pipe is in an L-shaped design, so that when the flow guide pipe deflects under the action of downward pressure, the other end of the flow guide pipe extends out of the rotating groove, and surrounding coal gangue is pushed open, so that slurry can conveniently permeate into a coal gangue pile;
one end of the flow guide pipe is arranged in the vertical groove of the rotating groove, and the flow guide pipe can be sealed when the hollow rod is not pressed down due to the design that the flow guide pipe is attached to the sealing gasket;
the other end of the flow guide pipe is bent upwards, so that the slurry flowing into the flow guide pipe is difficult to flow out;
the hollow rod and the liquid drainage channel are matched for grouting, so that grouting can be performed on a deeper position of the coal gangue pile, and the grouting effect is better;
the design that the plurality of guide pipes and the hollow rod are matched for grouting can be used for grouting at different depths of the coal gangue pile, and the grouting effect is better;
when the hollow rod is pressed downwards, the guide pipe deflects, the other end of the guide pipe extends out of the rotating groove, surrounding coal gangue can be jacked open, further, the phenomenon that slurry is infiltrated due to compaction during drilling is prevented, and the grouting effect is better;
the purpose of grouting the deeper position and the different depths of the coal gangue pile is achieved.
Has the beneficial effects.
The structure is simple, and the device is convenient and practical.
And secondly, grouting can be performed on the deeper position and the different depths of the coal gangue pile, and the grouting effect is better.
Thirdly, the surrounding coal gangue can be jacked open during grouting, and the penetration of slurry is facilitated.
Drawings
FIG. 1 is a schematic structural view of a mining coal gangue fireproof device of the present invention.
FIG. 2 is a schematic structural view of a flow guide pipe of the mining coal gangue fireproof device.
In the attached drawings
Wherein the parts are: honeycomb duct (1), cavity pole (2), briquetting (3), backup pad (4), main part pole (5), stand pipe (6), filter screen (7), drill bit (8), flowing back passageway (9), income thick liquid groove (10), dowel (11), sealed pad (12), rotation groove (13), rotating sleeve (14), rolling ball (15).
The specific implementation mode is as follows:
the invention discloses a mine coal gangue fireproof device, which is realized by connecting one end of a main rod body with an external motor when grouting coal gangue piles, connecting a pressing block (3) with an external slurry pipe, operating the external motor to drive the main rod body to rotate, driving a drill bit (8) to rotate by the main rod body to further drive the main rod body to drill downwards into the coal gangue piles, stopping the operation of the external motor after the main rod body drills to a preset depth, rotating the pressing block (3) by using a sleeve wrench, downwards rotating the pressing block (3) along the main rod body, further downwards pressing the hollow rod (2) by the pressing block (3), downwards sliding one end of the hollow rod (2) along a guide pipe (6), downwards pressing a plurality of guide pipes (1) in the downwards sliding process, respectively rotating the plurality of guide pipes (1) around a connected fixed pin (11) under the downward pressure, and respectively driving a connected rotating ball (15) to upwards and downwards overturn in a corresponding rotating sleeve (14), one end of each of the plurality of flow guide pipes (1) extends out of the vertical groove corresponding to the rotating groove (13) and pushes away surrounding coal gangue, meanwhile, slurry enters the hollow rod (2) through the pressing block (3), part of the slurry in the hollow rod (2) directly flows downwards along the hollow rod (2) and enters the guide pipe (6), then flows into the liquid drainage channel (9), flows into the deepest position of the coal gangue pile through two outlets of the liquid drainage channel (9), and the other part of the slurry in the hollow rod (2) flows into the plurality of flow guide pipes (1) through slurry inlet grooves (10) in the plurality of flow guide pipes (1), then flows along the flow guide pipes (1), flows out of one end of the flow guide pipes (1) and flows into different depths of the coal gangue pile respectively;
the design that the rubber pad is arranged on the supporting plate (4) can protect the supporting plate (4) and prevent the supporting plate (4) from being damaged when the supporting plate (4) is contacted with the coal gangue;
the design that the rotating grooves (13) are distributed in a staggered mode enables the guide pipes (1) to be distributed in each position of the main rod body in a staggered mode, and grouting is conducted on different depths of the coal gangue pile;
the two outlets of the liquid drainage channel (9) are respectively provided with a filter screen (7), so that the liquid drainage channel (9) can be protected when a drill is put down, and drill residues are prevented from entering the liquid drainage channel (9) to block the liquid drainage channel (9);
the design that the outer side of the hollow rod (2) is not in contact with the inner wall of the main rod body enables the hollow rod (2) to move downwards along the main rod body, no friction force exists between the hollow rod (2) and the inner wall of the main rod body, and therefore the hollow rod (2) can move downwards conveniently;
the flow guide pipe (1) is designed in an L shape, so that when the flow guide pipe (1) deflects under the action of downward pressure, the other end of the flow guide pipe (1) extends out of the rotating groove (13) to jack surrounding coal gangue, and the slurry can conveniently infiltrate into a coal gangue pile;
one end of the flow guide pipe (1) is arranged in a vertical groove of the rotating groove (13), and the flow guide pipe (1) can be sealed when the hollow rod (2) is not pressed down due to the design that the flow guide pipe is attached to the sealing gasket (12);
the other end of the draft tube (1) is bent upwards, so that the slurry flowing into the draft tube (1) is difficult to flow out;
the hollow rod (2) and the liquid drainage channel (9) are matched for grouting, so that grouting can be performed on a deeper position of the coal gangue pile, and the grouting effect is better;
the plurality of guide pipes (1) and the hollow rod (2) are matched for grouting, so that grouting can be performed at different depths of the coal gangue pile, and the grouting effect is better;
when the hollow rod (2) is pressed downwards, the guide pipe (1) deflects, the other end of the guide pipe (1) extends out of the rotating groove (13), surrounding coal gangue can be jacked open, further, the situation that the penetration of slurry is affected by compaction during drilling is prevented, and the grouting effect is better;
the purpose of grouting the deeper position and the different depths of the coal gangue pile is achieved.
Claims (4)
1. The utility model provides a mining gangue firebreak device which characterized by: comprises main part device and slip casting device, and main part device comprises backup pad, main part pole, drill bit, sealed pad and rotation groove, and main part pole is served in to the backup pad, the backup pad is annular platelike structure, the main part pole is hollow structure, and the drill bit is arranged in on the main part pole other end, the drill bit cross-section is the triangle-shaped structure, be put threaded on the main part pole inner wall, it has a plurality of rotation grooves to open on the main part pole, it comprises horizontal groove and vertical groove two parts to rotate the groove, and vertical groove part embeds there is sealed pad, the horizontal groove and the vertical groove part of rotation groove are linked together with the inside and outside of main part body respectively, and the slip casting device comprises honeycomb duct, well cavity pole, briquetting, stand pipe, filter screen, flowing back passageway, income thick liquid groove, fixed pin, rotation cover and rotor ball, it has the flowing back passageway to open on the drill bit, the flowing back passageway is nearly word type, the flowing back passageway is last import and two, the drainage device is characterized in that filter screens are respectively arranged in two outlets of the drainage channel, a guide pipe is arranged in a main rod body, one end of the guide pipe is connected with a drill bit, the guide pipe is communicated with an inlet of the drainage channel, a hollow rod is arranged in the main rod body, one end of the hollow rod is sleeved on the other end of the guide pipe, the hollow rod is communicated with the guide pipe, a pressing block is arranged in one end of the main rod body and positioned above the hollow rod, threads are arranged outside the pressing block and meshed with the threads on the inner wall of the main rod body, a plurality of rotating sleeves are respectively arranged on the hollow rod and are communicated with a plurality of rotating grooves in a one-to-one correspondence manner, the rotating ball is arranged in the rotating sleeves, a penetrating groove is formed in the rotating ball, the flow guide pipe is arranged in the rotating groove and is connected with the main rod body through a fixing pin, the flow guide pipe is L-shaped, one end of the flow guide pipe is arranged, the other end of the flow guide pipe is bent upwards, the other end of the flow guide pipe is provided with a slurry inlet groove and communicated with the hollow rod, when the coal gangue pile is grouted in use, one end of the main rod body is firstly connected with an external motor, a pressing block is connected with an external slurry pipe, the external motor works to drive the main rod body to rotate, the main rod body drives the drill bit to rotate so as to drive the main rod body to drill into the coal gangue pile, after the coal gangue pile is drilled to a preset depth, the external motor stops working, the pressing block is rotated by using a sleeve wrench, the pressing block downwards rotates along the main rod body so as to downwards press the hollow rod, one end of the hollow rod downwards slides along the guide pipe, the hollow rod downwards presses the flow guide pipes in the sliding process, the flow guide pipes respectively rotate around the connected fixed pins under the downward pressure, and respectively drive the connected rotating balls to upwards and downwards overturn in the corresponding rotating sleeves, and then one ends of the flow guide pipes respectively extend out of the vertical grooves, and respectively with around gangue back-open, simultaneously, the thick liquid passes through the briquetting and enters into in the cavity pole, and partial thick liquid in the cavity pole directly flows downwards along the cavity pole and enters into the stand pipe, then flows into in the flowing back passageway, flows into in the coal gangue heap underdrilling deepest position through two exports of flowing back passageway, and another part thick liquid in the cavity pole flows into in a plurality of stand pipes through the income thick liquid groove on a plurality of honeycomb ducts respectively, then flows along the honeycomb duct, flows out from honeycomb duct one end, flows in the different degree of depth of coal gangue heap respectively.
2. The mining coal gangue fireproof device of claim 1, wherein a rubber pad is disposed on the support plate.
3. The mining coal gangue fireproof device of claim 1, wherein the plurality of rotating grooves are distributed in a staggered manner.
4. The mining coal gangue fireproof device of claim 1, wherein the outside of the hollow rod is not in contact with the inner wall of the main rod body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711278135.4A CN107998537B (en) | 2017-12-06 | 2017-12-06 | Mining gangue fire protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711278135.4A CN107998537B (en) | 2017-12-06 | 2017-12-06 | Mining gangue fire protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107998537A CN107998537A (en) | 2018-05-08 |
| CN107998537B true CN107998537B (en) | 2020-12-18 |
Family
ID=62057072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711278135.4A Active CN107998537B (en) | 2017-12-06 | 2017-12-06 | Mining gangue fire protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107998537B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2258141C1 (en) * | 2004-05-25 | 2005-08-10 | Акционерная компания "АЛРОСА" (ЗАО) | Grouting method for water-bearing horizon rock during vertical pit shaft building |
| CN103334699A (en) * | 2013-06-24 | 2013-10-02 | 中煤科工集团西安研究院 | Coal mine underground coal bed drilling and cave-building device and method of use |
| CN205370450U (en) * | 2015-11-30 | 2016-07-06 | 徐州吉安矿业科技有限公司 | Colliery fire prevention drilling tool for slip casting |
| CN205558943U (en) * | 2016-04-20 | 2016-09-07 | 六盘水师范学院 | Country rock fault slip casting stock in pit |
-
2017
- 2017-12-06 CN CN201711278135.4A patent/CN107998537B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2258141C1 (en) * | 2004-05-25 | 2005-08-10 | Акционерная компания "АЛРОСА" (ЗАО) | Grouting method for water-bearing horizon rock during vertical pit shaft building |
| CN103334699A (en) * | 2013-06-24 | 2013-10-02 | 中煤科工集团西安研究院 | Coal mine underground coal bed drilling and cave-building device and method of use |
| CN205370450U (en) * | 2015-11-30 | 2016-07-06 | 徐州吉安矿业科技有限公司 | Colliery fire prevention drilling tool for slip casting |
| CN205558943U (en) * | 2016-04-20 | 2016-09-07 | 六盘水师范学院 | Country rock fault slip casting stock in pit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107998537A (en) | 2018-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109958421B (en) | Pre-crack hydraulic fracturing roof cutting pressure relief construction method and drilling machine | |
| CN102678040B (en) | Drilling device and method for baseplate in coal mine roadway | |
| CN110344784B (en) | Water inrush treatment device for mine nearly horizontal directional drilling | |
| CN102071961A (en) | Downward gas drainage drill hole and pressure testing drill hole sealing method | |
| CN1982651A (en) | Method for mining ultra-long roofbolt slip casting with top plate large-area and long-time exposed under mining well | |
| CN107998537B (en) | Mining gangue fire protection device | |
| CN104912476A (en) | Rotary excavating pile driving mechanism of hydraulic pile driving equipment | |
| CN204609814U (en) | A kind of deep thick alluvium bored shaft broken grouting orifice tube is anti-goes out device | |
| CN204532057U (en) | A kind of Miniature portable spindle-type drill | |
| CN105735277A (en) | Hammering type pile machine mixing and jet grouting device and pile forming method thereof | |
| CN206668252U (en) | A kind of seat earth aquifer water pressure monitoring system | |
| CN202249922U (en) | Device for sealing high-pressure slip casting open hole deep hole with preposed expand tube | |
| CN211647234U (en) | Overhanging type scaffold | |
| CN205576900U (en) | It spouts device soon to embrace stirring of pressure formula stake machine | |
| CN109630061A (en) | A kind of underground coal mine water guide borehole sealing device | |
| CN202544855U (en) | Hollow grouting device for large-aperture pre-tensioning base plate | |
| CN201554418U (en) | Water irruption-resistant boring device and drilling machine therewith | |
| CN105735307A (en) | Holding type pile machine stirring and spiral spraying device and pile forming method thereof | |
| CN201433395Y (en) | Tri-circular safe pile casing for environment-friendly manual-excavated piles | |
| CN201934049U (en) | Device for preventing blowout of drill holes | |
| CN219691564U (en) | Drainage anchor rod suitable for high-pressure underground water section of water-rich tunnel | |
| RU168385U1 (en) | Drilling rig of a drilling rig with a through spindle and a hydraulic chuck for the construction of horizontal and deviated wells from underground mine workings | |
| CN221096408U (en) | Lateral drilling device behind wall | |
| CN220394574U (en) | Hole guiding pipe | |
| CN220486452U (en) | Quick-mounting grouting plugging joint for geological investigation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201127 Address after: 221000 1-501, building loftc, West Greenland Business City, Hanyuan Avenue, Yunlong District, Xuzhou City, Jiangsu Province Applicant after: XUZHOU XINNANHU TECHNOLOGY Co.,Ltd. Address before: 221000 Jiangsu province Quanshan District of Xuzhou Mining University Science Park Innovation Base with F software Applicant before: Zhao Xuelian |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231226 Address after: 046199 Dongdeng Village East, Yuwu Town, Tunliu District, Changzhi City, Shanxi Province Patentee after: Shanxi Gaoque Environmental Protection Technology Co.,Ltd. Address before: 221000 1-501, loftc building, West Greenland Business City, Hanyuan Avenue, Yunlong District, Xuzhou City, Jiangsu Province Patentee before: XUZHOU XINNANHU TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |