CN209604075U - A kind of water leak accident coal mine self-help apparatus - Google Patents
A kind of water leak accident coal mine self-help apparatus Download PDFInfo
- Publication number
- CN209604075U CN209604075U CN201920184812.4U CN201920184812U CN209604075U CN 209604075 U CN209604075 U CN 209604075U CN 201920184812 U CN201920184812 U CN 201920184812U CN 209604075 U CN209604075 U CN 209604075U
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- CN
- China
- Prior art keywords
- culvert pipe
- component
- rescue frame
- horizontal segment
- water leak
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Abstract
The utility model discloses a kind of water leak accident coal mine self-help apparatus, including safe ground, coal working face, lift by crane component, culvert pipe component and rescue frame component, lifting component is provided on the safe ground, the bottom on the safe ground is provided with coal working face, the side wall of the coal working face is equipped with culvert pipe component, the culvert pipe component is internally provided with rescue frame component, the culvert pipe component includes vertical section culvert pipe, bending segment culvert pipe, connecting flange, mounting rack, horizontal segment culvert pipe, bend guide rail, intermediate rail, linear guide and supporting leg, the side wall of the coal working face is fixed with mounting rack uniformly through bolt, the mounting rack is internally provided with horizontal segment culvert pipe, one end of the horizontal segment culvert pipe is connected with connecting flange, the side of institute's connecting flange is connected with bending segment culvert pipe, the utility model, tool Have the characteristics that practical and rescue efficiency is high.
Description
Technical field
The utility model relates to coal mining security technology area, specially a kind of water leak accident coal mine self-help apparatus.
Background technique
In process of coal mining, it is possible that landslide, gas explosion and the accidents such as permeable.Water leak accident refers to that mine exists
In construction and production process, surface water and groundwater is caused to pass through crack, tomography, subsidence area since water control measures are not in place
Mine working face is uncontrolledly poured in etc. various channels, causes the floods of operating personnel's injures and deaths or mine property loss.It answers at present
The method common to such accident is to build refuge chamber in mine, and in order to which personnel can quickly hide, refuge chamber is in mine
In every several hundred meters build one, not only build high investment, but also still farther out, water leak accident occurs distance with mine personnel
When, personnel pour in a nearest refuge chamber, cause survival capsule lazy weight.
For this purpose, the Patent design of 02250169 U of Patent No. CN a kind of underground culvert pipe self-rescue system, the system pass through
The mode for being laid with pipeline allows personnel to hide when accident occurs into culvert pipe, and mine, but the program are left by way of creeping
Mine is not accounted for there are very high vertical range, personnel not only take physical strength by way of crawling, and can not carry out substantially
Degree climb, rescue efficiency is low, and between culvert pipe and culvert pipe can not rotational angle, the practicability is poor.Therefore, design applicability by force and
A kind of high water leak accident of rescue efficiency is necessary with coal mine self-help apparatus.
Utility model content
The purpose of this utility model is to provide a kind of water leak accident coal mine self-help apparatus, to solve above-mentioned background technique
The problem of middle proposition.
In order to solve the above-mentioned technical problem, the utility model provides the following technical solutions: a kind of water leak accident coal mine from
Device, including safe ground, coal working face, lifting component, culvert pipe component and rescue frame component are rescued, is set on the safe ground
It is equipped with lifting component, the bottom on the safe ground is provided with coal working face, and the side wall of the coal working face is equipped with culvert
Tube assembly, the culvert pipe component be internally provided with rescue frame component, the coal mine self-help apparatus by culvert pipe component, rescue frame component
It is seated to suitable position with lifting component, each mechanism cooperation realizes the process hidden, creep and climbed down.
Further, the culvert pipe component includes vertical section culvert pipe, bending segment culvert pipe, connecting flange, mounting rack, horizontal segment
Culvert pipe, bending guide rail, intermediate rail, linear guide and supporting leg, the side wall of the coal working face are fixed uniformly through bolt
There is mounting rack, the mounting rack is internally provided with horizontal segment culvert pipe, and one end of the horizontal segment culvert pipe is connected with connecting flange,
The side of institute's connecting flange is connected with bending segment culvert pipe, and one end of the bending segment culvert pipe is provided with vertical section culvert pipe, described perpendicular
The inside of straight section culvert pipe and horizontal segment culvert pipe is equipped with straight line and leads uniformly through being welded with supporting leg at the top of supporting leg
Rail, one end of the linear guide offer thread groove, and one end of the linear guide is provided with intermediate rail, and the centre is led
One end of rail is provided with threaded post, and threaded post is connected through a screw thread with thread groove, and one end of the intermediate rail is provided with circle
Pin, one end of the intermediate rail are provided with bending guide rail, and one end of the bending guide rail offers cylinder groove, and cylinder groove
It is fit structure with straight pin, offers escape scuttle at the top of the horizontal segment culvert pipe, the inner wall of the escape scuttle passes through
Articulate is connected with arc-shaped door, and the inner wall of the horizontal segment culvert pipe is provided with flange part, and flange part is for limiting arc-shaped door
Inwardly folding, personnel first open the arc-shaped door from oneself proximal most position, into and crawl to fasten arc in horizontal segment culvert pipe
Door, holds linear guide, two pedals supporting leg it is mobile to exit, the personnel of the top can touch rescue at this time
Frame component, other staff crawl to the suitable position of horizontal segment culvert pipe and bear with.
Further, the connecting flange is also used to connect vertical section culvert pipe and bending segment culvert pipe, and connecting flange is also used
In connecting two horizontal segment culvert pipe, each section of culvert pipe is sealed and is connected, facilitated personnel and hide and escape by connecting flange.
Further, the intermediate rail is located at the inside of connecting flange, and the bending guide rail is located at bending segment culvert pipe
Inside, intermediate rail play the role of connection bending guide rail and linear guide.
Further, sealing ring is provided between the arc-shaped door outer wall and the inner wall of escape scuttle, sealing ring will escape
Gap between window and arc-shaped door is filled up, and is prevented in the flat section culvert pipe of extraneous water flow water leaking-in.
Further, the rescue frame component includes rescue frame ontology, pedal, handrail, pulley and idler wheel, and two described straight
The outside of line guide rail is provided with rescue frame ontology, and the side of the rescue frame ontology is correspondingly arranged on pulley, and the two of the guide rail
Side is corresponding to offer guide groove, and pulley and guide groove are fit structure, and the bottom of the rescue frame ontology is provided with idler wheel, and
Idler wheel is in contact with the bottom interior wall of horizontal segment culvert pipe, is correspondingly arranged on handrail, the rescue at the top of the rescue frame ontology
The top of frame ontology is corresponding by being welded with pedal, and rescue frame ontology slides into the head closest to the trapped person in exit
Portion position, personal son is sitting on rescue frame ontology at this time, is held handrail, is slammed pedal with foot, top personnel start at this time
Torque motor, pulley roll in the guide groove that linear guide opens up, and successively lead by linear guide, intermediate rail and bending
Rail is drawn out to safe ground from vertical section culvert pipe, then puts down rescue frame ontology, due to self gravity, rescues frame ontology
It is slipped in coal working face along line guide rail, bending guide rail and intermediate rail, second people is similarly dragged to go out.
Further, the lifting component include hanger, rise messenger, lifting rope, torque motor and hook, it is described safely
Be fixedly installed with hanger at the top of face, the inside of the hanger has been connected with messenger by bearing, described messenger it is outer
Portion is wound with lifting rope, and the side of the hanger is equipped with torque motor, and the output shaft of the torque motor and messenger are mutual
Socket, one end of the lifting rope are equipped with hook, and the hook is movable connected structure, staring torque electricity with rescue frame ontology
Machine, output shaft have driven messenger to rotate, and lifting rope has been wrapped in outside messenger, and by hook lifting upwards, hook pulls rescue
Frame ontology moves upwards.
Compared with prior art, the utility model beneficial effect achieved is: the utility model, by being provided with culvert pipe
Component, when water leak accident occurs, personnel can hide into culvert pipe nearby, and it is big to hide space, and it is crowded at one to avoid personnel
In refuge chamber, the practicability of the coal mine self-help apparatus is improved；By be provided with lifting component and rescue frame component, allow near
The personnel in nearly exit step down on rescue frame, are being lifted personnel to safety surface by torque motor, then rescue frame is slided,
Second people is similarly saved oneself by the method, and personnel is allow significantly to be climbed, so that the coal mine self-help apparatus has
The high feature of rescue efficiency.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the whole positive structure diagram of the utility model；
Fig. 2 is the component schematic cross-sectional view of the utility model；
Fig. 3 is the bending guide rail and linear guide scheme of installation of the utility model；
Fig. 4 is the mounting rack and horizontal segment culvert pipe scheme of installation of the utility model；
Fig. 5 is the rescue frame component and horizontal segment culvert pipe scheme of installation of the utility model；
Fig. 6 is a-quadrant enlarged diagram in Fig. 5 of the utility model；
Fig. 7 is the linear guide and pulley scheme of installation of the utility model；
Fig. 8 is the rescue frame component structure diagram of the utility model；
In figure: 1, safe ground；2, coal working face；3, component is lifted by crane；4, culvert pipe component；5, frame component is rescued；41, it erects
Straight section culvert pipe；42, bending segment culvert pipe；43, connecting flange；44, mounting rack；45, horizontal segment culvert pipe；46, guide rail is bent；47, in
Between guide rail；48, linear guide；49, supporting leg；471, threaded post；481, thread groove；472, straight pin；461, cylinder groove；451,
Escape scuttle；452, arc-shaped door；453, flange part；51, frame ontology is rescued；52, pedal；53, handrail；54, pulley；55, idler wheel；
481, guide groove；31, hanger；32, messenger is played；33, lifting rope；34, torque motor；35, it links up with；482, guide groove.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-8 is please referred to, the utility model provides a kind of technical solution: water leak accident coal mine self-help apparatus, including peace
Full ground 1, coal working face 2 lift by crane component 3, culvert pipe component 4 and rescue frame component 5, are provided with lifting group on safe ground 1
Part 3, the bottom on safe ground 1 are provided with coal working face 2, and the side wall of coal working face 2 is equipped with culvert pipe component 4, culvert pipe group
Part 4 is internally provided with rescue frame component 5, which pacifies culvert pipe component 4, rescue frame component 5 and lifting component 3
It puts to suitable position, each mechanism cooperation realizes the process hidden, creep and climbed down；
Culvert pipe component 4 includes vertical section culvert pipe 41, bending segment culvert pipe 42, connecting flange 43, mounting rack 44, horizontal segment culvert pipe
45, guide rail 46, intermediate rail 47, linear guide 48 and supporting leg 49 are bent, the side wall of coal working face 2 is solid uniformly through bolt
Surely there is mounting rack 44, mounting rack 44 is internally provided with horizontal segment culvert pipe 45, and one end of horizontal segment culvert pipe 45 is connected with connection method
Orchid 43, the side of institute's connecting flange 43 is connected with bending segment culvert pipe 42, and one end of bending segment culvert pipe 42 is provided with vertical section culvert pipe
41, the inside of vertical section culvert pipe 41 and horizontal segment culvert pipe 45 is uniformly through being welded with supporting leg 49, and the top of supporting leg 49
Portion is equipped with linear guide 48, and one end of linear guide 48 offers thread groove 481, and one end of linear guide 48 is provided with centre
Guide rail 47, one end of intermediate rail 47 is provided with threaded post 471, and threaded post 471 is connected through a screw thread with thread groove 481, in
Between one end of guide rail 47 be provided with straight pin 472, one end of intermediate rail 47 is provided with bending guide rail 46, the one of bending guide rail 46
End offers cylinder groove 461, and cylinder groove 461 and straight pin 472 are fit structure, and the top of horizontal segment culvert pipe 45, which offers, escapes
Raw window 451, the inner wall of escape scuttle 451 are connected with arc-shaped door 452 by articulate, and the inner wall of horizontal segment culvert pipe 45 is set
It is equipped with flange part 453, and flange part 453 is inwardly opened and closed for limiting arc-shaped door 452, personnel first open from oneself proximal most position
Arc-shaped door 452, into and crawl to fasten arc-shaped door 452 in horizontal segment culvert pipe 45, hold linear guide 48, two pedals
Supporting leg 49 it is mobile to exit, the personnel of the top can touch rescue frame component 5 at this time, and other staff crawl to water
The suitable position of flat section culvert pipe 45 is simultaneously born with；
Connecting flange 43 is also used to connect vertical section culvert pipe 41 and bending segment culvert pipe 42, and connecting flange 43 is also used to connect
Each section of culvert pipe is sealed and is connected by two horizontal segment culvert pipe 45, connecting flange 43, is facilitated personnel and is hidden and escape；
Intermediate rail 47 is located at the inside of connecting flange 43, and bending guide rail 46 is located at the inside of bending segment culvert pipe 42, intermediate
Guide rail 47 plays the role of connection bending guide rail 46 and linear guide 48；
It is provided with sealing ring between 452 outer wall of arc-shaped door and the inner wall of escape scuttle 451, sealing ring is by escape scuttle 451
Gap between arc-shaped door 452 is filled up, and is prevented in the flat section culvert pipe 45 of extraneous water flow water leaking-in；
Rescuing frame component 5 includes rescue frame ontology 51, pedal 52, handrail 53, pulley 54 and idler wheel 55, two linear guides
48 outside is provided with rescue frame ontology 51, and the side of rescue frame ontology 51 is correspondingly arranged on pulley 54, and the two of linear guide 48
Side is corresponding to offer guide groove 482, and pulley 54 and guide groove 482 are fit structure, and the bottom of rescue frame ontology 51 is provided with
Idler wheel 55, and idler wheel 55 is in contact with the bottom interior wall of horizontal segment culvert pipe 45, the top of rescue frame ontology 51, which is correspondingly arranged on, to be helped
Hand 53, the top of rescue frame ontology 51 is corresponding by being welded with pedal 52, and rescue frame ontology 51 is slided into closest to outlet
The head position of the trapped person at place, personal son is sitting on rescue frame ontology 51 at this time, is held handrail 53, is slammed foot with foot
52 are pedaled, staring torque motor 34, pulley 54 roll top personnel in the guide groove 482 that linear guide 48 opens up at this time, successively
By linear guide 48, intermediate rail 47 and bending guide rail 46, it is drawn out to safe ground 1 from vertical section culvert pipe 41, then will
Rescue frame ontology 51 is put down, and due to self gravity, rescues frame ontology 51 along line guide rail 48, bending guide rail 46 and intermediate rail 47
It is slipped in coal working face 2, second people is similarly dragged to go out；
Component 3 is lifted by crane to include hanger 31, play messenger 32, lifting rope 33, torque motor 34 and hook 35, safe ground 1
Top is fixedly installed with hanger 31, and the inside of hanger 31 has been connected with messenger 32 by bearing, and the outside for playing messenger 32 twines
It is wound with lifting rope 33, the side of hanger 31 is equipped with torque motor 34, and the output shaft of torque motor 34 is mutually covered with messenger 32
It connects, one end of lifting rope 33 is equipped with hook 35, and hook 35 is movable connected structure, staring torque motor with rescue frame ontology 51
34, output shaft has driven messenger 32 to rotate, and lifting rope 33 has been wrapped in outside messenger 32, by the lifting upwards of hook 35, hook
35 pull rescue frame ontology 51 to move upwards；
When water leak accident occur when, personnel first open the arc-shaped door 452 from oneself proximal most position, into and crawl in level
In Duan Hanguan 45, arc-shaped door 452 is fastened, sealing ring fills up the gap between escape scuttle 451 and arc-shaped door 452, prevents outer
Boundary's water flow is penetrated into horizontal segment culvert pipe 45, then holds linear guide 48, two pedals supporting leg 49 it is mobile to exit,
The personnel of the top can touch at this time rescue frame component 5, other staff crawl to horizontal segment culvert pipe 45 suitable position simultaneously
It bears with, rescue frame ontology 51 slides into the head position closest to the trapped person in exit, and personal son, which is sitting in, at this time rescues
It helps on frame ontology 51, holds handrail 53, slam pedal 52 with foot, top personnel staring torque motor 34 at this time, output
Axis has driven messenger 32 to rotate, and lifting rope 33 has been wrapped in outside messenger 32, and by the lifting upwards of hook 35, hook 35 is pulled and rescued
Help frame ontology 51 and move upwards pulley 54 and rolled in the guide groove 482 that linear guide 48 opens up, successively by linear guide 48,
Intermediate rail 47 and bending guide rail 46, are drawn out to safe ground 1 from vertical section culvert pipe 41, then put rescue frame ontology 51
Under, due to self gravity, frame ontology 51 is rescued along line guide rail 48, bending guide rail 46 and intermediate rail 47 and is slipped to coal work
In face 2, second people is similarly dragged to go out, and such design personnel when water leak accident occurs can hide nearby into culvert pipe
Interior, it is big to hide space, and it is crowded in a refuge chamber to avoid personnel, improves the practicability of the coal mine self-help apparatus；And
Personnel, which can proceed without, arduously significantly to be climbed, so that the coal mine self-help apparatus has the characteristics that rescue efficiency is high.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of water leak accident coal mine self-help apparatus, including safe ground (1), coal working face (2), lifting component (3), culvert
Tube assembly (4) and rescue frame component (5), it is characterised in that: lifting component (3), the peace are provided on the safe ground (1)
The bottom on full ground (1) is provided with coal working face (2), and the side wall of the coal working face (2) is equipped with culvert pipe component (4),
The culvert pipe component (4) is internally provided with rescue frame component (5).
2. a kind of water leak accident coal mine self-help apparatus according to claim 1, it is characterised in that: the culvert pipe component
(4) include vertical section culvert pipe (41), bending segment culvert pipe (42), connecting flange (43), mounting rack (44), horizontal segment culvert pipe (45),
It is equal to bend guide rail (46), intermediate rail (47), linear guide (48) and supporting leg (49), the side wall of the coal working face (2)
Even to be bolted mounting rack (44), the mounting rack (44) is internally provided with horizontal segment culvert pipe (45), the level
One end of Duan Hanguan (45) is connected with connecting flange (43), and the side of institute's connecting flange (43) is connected with bending segment culvert pipe (42),
One end of the bending segment culvert pipe (42) is provided with vertical section culvert pipe (41), the vertical section culvert pipe (41) and horizontal segment culvert pipe
(45) inside is equipped with linear guide (48) uniformly through being welded with supporting leg (49) at the top of supporting leg (49),
One end of the linear guide (48) offers thread groove (481), and one end of the linear guide (48) is provided with intermediate rail
(47), one end of the intermediate rail (47) is provided with threaded post (471), and threaded post (471) and thread groove (481) pass through spiral shell
Line connection, one end of the intermediate rail (47) are provided with straight pin (472), and one end of the intermediate rail (47) is provided with curved
It rolls over guide rail (46), one end of bending guide rail (46) offers cylinder groove (461), and cylinder groove (461) and straight pin (472)
For fit structure, offered escape scuttle (451) at the top of the horizontal segment culvert pipe (45), the escape scuttle (451) it is interior
Wall is connected with arc-shaped door (452) by articulate, and the inner wall of the horizontal segment culvert pipe (45) is provided with flange part (453), and
Flange part (453) is inwardly opened and closed for limiting arc-shaped door (452).
3. a kind of water leak accident coal mine self-help apparatus according to claim 2, it is characterised in that: the connecting flange
(43) it is also used to connect vertical section culvert pipe (41) and bending segment culvert pipe (42), and connecting flange (43) is also used to connect two levels
Duan Hanguan (45).
4. a kind of water leak accident coal mine self-help apparatus according to claim 2, it is characterised in that: the intermediate rail
(47) it is located at the inside of connecting flange (43), bending guide rail (46) is located at the inside of bending segment culvert pipe (42).
5. a kind of water leak accident coal mine self-help apparatus according to claim 2, it is characterised in that: the arc-shaped door
(452) sealing ring is provided between outer wall and the inner wall of escape scuttle (451).
6. a kind of water leak accident coal mine self-help apparatus according to claim 2, it is characterised in that: the rescue frame component
It (5) include rescue frame ontology (51), pedal (52), handrail (53), pulley (54) and idler wheel (55), two linear guides
(48) outside is provided with rescue frame ontology (51), and the side of rescue frame ontology (51) is correspondingly arranged on pulley (54), institute
The two sides correspondence for stating guide rail (48) offers guide groove (482), and pulley (54) and guide groove (482) are fit structure, described
The bottom of rescue frame ontology (51) is provided with idler wheel (55), and idler wheel (55) connects with the bottom interior wall of horizontal segment culvert pipe (45)
It touches, is correspondingly arranged on handrail (53) at the top of the rescue frame ontology (51), the top of rescue frame ontology (51) is corresponding logical
It crosses and is welded with pedal (52).
7. a kind of water leak accident coal mine self-help apparatus according to claim 6, it is characterised in that: the lifting component
(3) include hanger (31), play messenger (32), lifting rope (33), torque motor (34) and hook (35), the safe ground (1)
Top be fixedly installed with hanger (31), the inside of the hanger (31) has been connected with messenger (32) by bearing, described
Being externally wrapped with lifting rope (33) for messenger (32) is played, the side of the hanger (31) is equipped with torque motor (34), the power
The output shaft of torque motor (34) is mutually socketed with messenger (32), and one end of the lifting rope (33) is equipped with hook (35), institute
Hook (35) and rescue frame ontology (51) are stated as movable connected structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920184812.4U CN209604075U (en) | 2019-02-02 | 2019-02-02 | A kind of water leak accident coal mine self-help apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920184812.4U CN209604075U (en) | 2019-02-02 | 2019-02-02 | A kind of water leak accident coal mine self-help apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209604075U true CN209604075U (en) | 2019-11-08 |
Family
ID=68403256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920184812.4U Expired - Fee Related CN209604075U (en) | 2019-02-02 | 2019-02-02 | A kind of water leak accident coal mine self-help apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209604075U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202546A (en) * | 2021-05-12 | 2021-08-03 | 陈成 | Rescue device for dispersed pressure-bearing coal mine water permeation accident |
| CN113202533A (en) * | 2020-01-13 | 2021-08-03 | 重庆工程职业技术学院 | Assembly and process for automatic ventilation mine |
-
2019
- 2019-02-02 CN CN201920184812.4U patent/CN209604075U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202533A (en) * | 2020-01-13 | 2021-08-03 | 重庆工程职业技术学院 | Assembly and process for automatic ventilation mine |
| CN113202533B (en) * | 2020-01-13 | 2022-08-12 | 重庆工程职业技术学院 | Assembly and process for ventilation mine |
| CN113202546A (en) * | 2021-05-12 | 2021-08-03 | 陈成 | Rescue device for dispersed pressure-bearing coal mine water permeation accident |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |