CN108894817A - A kind of down-hole survival capsule quick operating valve - Google Patents
A kind of down-hole survival capsule quick operating valve Download PDFInfo
- Publication number
- CN108894817A CN108894817A CN201810945549.6A CN201810945549A CN108894817A CN 108894817 A CN108894817 A CN 108894817A CN 201810945549 A CN201810945549 A CN 201810945549A CN 108894817 A CN108894817 A CN 108894817A
- Authority
- CN
- China
- Prior art keywords
- door body
- bulkhead
- survival capsule
- door
- interior
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
- E05C19/007—Latches with wedging action
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
- E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
- E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
- E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
- E05F1/1207—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring parallel with the pivot axis
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/28—Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F11/00—Rescue devices or other safety devices, e.g. safety chambers or escape ways
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
- E21F17/12—Dam doors
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Business, Economics & Management (AREA)
- Health & Medical Sciences (AREA)
- Emergency Management (AREA)
- Pulmonology (AREA)
- Lock And Its Accessories (AREA)
Abstract
The invention discloses a kind of down-hole survival capsule quick operating valves, belong to mine equipment field, including door, articulated shaft and bulkhead, and the door includes outer door body, interior door body, torsional spring, card ball, spring and switch；The interior door body is articulated on bulkhead inner wall by articulated shaft, and torsional spring is cased on the articulated shaft and is set to bulkhead left or right side, makes the trend overturn in the oriented cabin of interior door body；There is the outer door body being linked together in the interior door body, under the outer door body is by there is spring-supported card ball to act on, when closing is opposite to be blocked；The card ball can be pressed into bulkhead when outer door body is opened, and be set to the switch in bulkhead in triggering, and lamp is opened in control cabinet.Due to the structure, when making to occur mine disaster, personnel can be rapidly entered in survival capsule, and keep good leakproofness, the safety of protection staff.
Description
Technical field
The invention belongs to mine equipment fields, relate in particular to a kind of down-hole survival capsule door.
Background technique
China occupies absolute specific gravity in the big pattern of China's production of energy, reaches as energy-consuming big country, coal
Nearly 70%.Although the 1/3 of the world the coal production Zhi Zhan coal production in China, Mine Disasters death toll accounts for world's coal mine
The 4/5 of death tolls.In 20 coal mine disasters for causing death toll most of the every generation in the world, just there are 8 to occur in
State, frequent mine disaster not only cause the rupture of many families, while also having seriously affected the international image of China.
It actively saves oneself a kind of lifesaving appliance combined with external rescue when mine escape capsule is a kind of novel emergency hedging.
Mine escape capsule is typically placed near channel of coal mining working surface, main transport roadway, parking lot etc., and when underground, generation gas and coal dust is quick-fried
The emergency episodes such as fried, coal and gas prominent, roof fall slump, subsurface environment are no longer suitable for that miner continues gug escape and temporarily can not
When escape, it can rapidly enter and carry out hedging fallback or standby carry out self-help escape in mine escape capsule.In mine escape capsule,
Hatch door is a considerable position, it be in cabin temperature and air by the direct position of external interference.If hatch door seals
Property the bad indoor environment that will lead to be severely impacted, and cause to hide and wait the personnel of lifesaving to cannot get due guarantor in cabin
Shield.
Existing down-hole survival capsule outdoors open and into closing in cabin by portion, and the same switching mechanism used generally makes
It is the runner of direction plate-like, covers in shaft, rotation repeatedly, could opens and closes life saving cabin door.While this ensure that
Life saving cabin door compresses bulkhead, but since evacuation situation is urgent, and it is slow to open life saving cabin door, delays escape opportunity.Existing well
Lower life saving cabin door is generally set to open outwardly, when there is falling rocks gear before life saving cabin door, will be unable to open life saving cabin door, it is necessary to
Guarantee that there are certain safe spaces before life saving cabin door.Also in addition, occurring since sealing joint strip is easy aging in the presence of a harsh environment
When impact, door is also a problem to be solved in the presence of the case where the failing to open or closing that misplace.
Summary of the invention
The purpose of the present invention is providing a kind of down-hole survival capsule quick operating valve in view of the above shortcomings, following ask is intended to solve
Topic：
1. solving existing life saving cabin door, complicated, slow technical problem is opened；
2. also solving existing life saving cabin door, the bad technical problem of leakproofness；
3. the technical issues of also solving existing life saving cabin door, impacting easily dislocation；
To achieve the above object, the present invention provides the following technical solutions：
A kind of down-hole survival capsule quick operating valve, including door, articulated shaft and bulkhead, the door include outer door body, interior door body, torsional spring, card
Ball, spring and switch；The interior door body is articulated on bulkhead inner wall by articulated shaft, and torsional spring is cased on the articulated shaft and is set to
Bulkhead left or right side makes the trend overturn in the oriented cabin of interior door body；There is the outer door body being linked together in the interior door body, it is described
Under outer door body is by there is spring-supported card ball to act on, when closing is opposite to be blocked；The card ball can be pressed into when outer door body is opened
In bulkhead, and it is set to the switch in bulkhead in triggering, lamp is opened in control cabinet.
Due to above structure, door includes outer door body and interior door body, and outer door body and interior door body are linked together.Outer door body is outside
Portion's environment, for bearing extraneous explosion impact, interior door body is used for sealing life-saving capsule escape route towards inside survival capsule.Door
Interior door body is articulated on bulkhead inner wall by articulated shaft, and inside door bulk area is greater than the doorway that escape enters in cabin, which can only be to
It opens inside.Life saving cabin door is generally set to open outwardly under existing well, when there is falling rocks gear before life saving cabin door, will be unable to open
Life saving cabin door, it is necessary to guarantee that there are certain safe spaces before life saving cabin door, and by the way that life saving cabin door to be set as internally opening
It opens, it can be to avoid problems.It is cased with torsional spring on the articulated shaft and is set to bulkhead left or right side, torsional spring utilizes the bullet of itself
Property, so that accelerating to rotate around articulated shaft when door is opened, survival capsule escape entrance is opened, strives for the time of opening the cabin for escape personnel.Hinge
Why spindle is located at left or right side, be because at this time open life saving cabin door mainly overcome be hinged place frictional force, if
It is set as opening upward or downward, can be not easy to open and be closed because of the influence of life saving cabin door self gravity.The external door of the door
For body in closure, Men Shangyou is with respect to retaining mechanism, by the opposite locking of outer door body.Locking means door and non-fully locks relatively,
By door externally to being opened in cabin, it is only necessary to as soon as slightly larger power, can push open into survival capsule.When in entrance survival capsule
Afterwards, in the interior door body of door, there is complete locking device, and the door lock of conventional survival capsule use direction plate-like is identical, Ke Yicong
Inside completely locks hatch door.Opposite retaining mechanism includes card ball and spring, and card ball and spring is located in the slot in bulkhead, card ball
By compressed spring, have the tendency that popping up out of slot in bulkhead.Card slot corresponding with card ball is located at outer door body edge, described outer
Under door body is by there is spring-supported card ball to act on, when closing is opposite to be blocked, and card ball is stuck on card slot；Card ball is inside in outer door body
It when unlatching, is pressed into bulkhead, at this point, spring is compressed, and is set to the switch in bulkhead in triggering, switchs lamp in control cabinet
It opens, avoids into as dark as a stack of black cats in cabin, can not find corresponding operation device.
In order to further perfect, in the interior door body and bulkhead inner wall contact surface, several intermeshing raised lines are equipped with,
The raised line closure is looped around doorway.
Due to above structure, raised line closure is looped around doorway, interior door body when closed, in the raised line and bulkhead on contact surface
Raised line intermeshing on wall contact surface.When door is impacted, due to the presence of raised line, it ensure that door is tightly fitted in bulkhead
On, dislocation deformation will not occur.
In order to further perfect, sealing joint strip is connected on the intermeshing raised line, the sealing joint strip is pressed together on convex
Between item.
Due to above structure, sealing joint strip is connected on raised line, sealing joint strip is pressed together between raised line, adhesive tape bending and laminating
Sealing effect is more excellent, will not the gas leakage because of aging deformation.The quantity of raised line can according to need setting, generally at least engage
Tooth.
In order to further perfect, the outer door body is the dome shape of outwardly convex.
Due to above structure, the spherical structure of outwardly convex makes life saving cabin door have resistance to compression, strong shock resistance etc. excellent
Point.
In order to further perfect, baffle is equipped with above the door.
Due to above structure, baffle can protect escape personnel when survival capsule doorway waits, and it is empty to provide certain safety
Between.
In order to further perfect, the baffle is arch bridge shape, and upper surface is equipped with several muscles and bones for intersecting protrusion.
Due to above structure, baffle is arch bridge shape, so that junk will not be accumulated on baffle, upper surface is equipped with several
The muscles and bones for intersecting protrusion, enhances resistance to compression, the impact resistance of baffle.
In order to further perfect, on the external door external surface, it is fixed with the hand handle of position Yu articulated shaft opposite side.
Due to above structure, on the external door external surface, it is fixed with the hand handle of position Yu articulated shaft opposite side, hand handle
Far from articulated shaft, the arm of force is bigger, it is easier to push outer door body open, when also personnel being facilitated to leave, pull on hand handle, close life saving cabin door.
The beneficial effects of the invention are as follows：
1. the invention discloses a kind of down-hole survival capsule quick operating valves, life saving cabin door is set as internally opening, junk is avoided to stop
Hatch door is opened, and torsional spring is cased on articulated shaft, can quick opened door, card ball and spring constitutes opposite retaining mechanism, can be with
By door with respect to clamping, in interior door body and bulkhead inner wall contact surface, several intermeshing raised lines is equipped with, ensure that door tightly pastes
It closes on bulkhead, dislocation deformation will not occur.This down-hole survival capsule quick operating valve, which has, quickly to be opened, easy to operate, stable structure,
The characteristics of good airproof performance.
Detailed description of the invention
Fig. 1 is hatch door schematic elevation view of the invention；
Fig. 2 is hatch door top cross-sectional view of the invention；
Fig. 3 is the right view overall schematic of cabin of the invention；
In attached drawing：1-, 11- articulated shaft, 12- bulkhead, the outer door body of 2-, door body, 4- torsional spring, 5- card ball, 6- spring, 7- are opened in 3-
Pass, 8- raised line, 9- baffle, 21- hand handle.
Specific embodiment
With reference to the accompanying drawing with specific embodiment, the present invention is described in more detail, but the present invention is not limited to
Following embodiment.
In conjunction with attached drawing 1, attached drawing 2 and attached drawing 3.A kind of down-hole survival capsule quick operating valve, including door 1, articulated shaft 11 and bulkhead 12, it is described
Door 1 includes outer door body 2, interior door body 3, torsional spring 4, card ball 5, spring 6 and switch 7；Outer door body 2 and interior door body 3 are linked together.External door
Body 2 is towards external environment, and for bearing extraneous explosion impact, interior door body 3 is escaped towards inside survival capsule for sealing life-saving capsule
Channel.The interior door body 3 of door 1 is articulated on 12 inner wall of bulkhead by articulated shaft 11, and interior 3 area of door body is greater than escape and enters in cabin
Doorway, the door can only be opened internally.Life saving cabin door is generally set to open outwardly under existing well, when have falling rocks gear in life saving cabin door
When preceding, it will be unable to open life saving cabin door, it is necessary to guarantee that there are certain safe spaces before life saving cabin door, and by by survival capsule
Door is set as internally opening, can be to avoid problems.It is cased with torsional spring 4 on the articulated shaft 11 and is set to bulkhead 12 left side or right
Side makes the trend overturn in the oriented cabin of interior door body 3；Torsional spring 4 utilizes the elasticity of itself, so that accelerating when door 1 is opened around articulated shaft
11 rotations, open survival capsule escape entrance, strive for the time of opening the cabin for escape personnel.Why articulated shaft 11 is located at left side or right
Side, be because that opens that life saving cabin door mainly overcomes at this time is the frictional force of hinged place, can be because if being set as opening upward or downward
For the influence of life saving cabin door self gravity, it is not easy to open and is closed.There are the outer door body 2 being linked together, institute in the interior door body 3
The outer door body 2 of door 1 is stated in closure, has opposite retaining mechanism on door 1, by the opposite locking of outer door body 2.Opposite locking means door
It 1 and non-fully locks, by door 1 externally to being opened in cabin, it is only necessary to as soon as slightly larger power, can push open into survival capsule.
After entering in survival capsule, in the interior door body 3 of door 1, there are complete locking device, and the door lock of conventional survival capsule use direction plate-like
Be it is identical, can from inside hatch door be locked completely.Opposite retaining mechanism includes card ball 5 and spring 6, and card ball 5 and spring 6 are set
In the slot in bulkhead 12, card ball 5 has the tendency that popping up out of slot in bulkhead 12 by compressed spring 6.It is corresponding with card ball 5
Card slot be located at outer 2 edge of door body, under the outer door body 2 is acted on by the card ball 5 for having spring 6 to support, when closing is opposite to be blocked,
Card ball 5 is stuck on card slot；Card ball 5 is pressed into bulkhead 12 when outer door body 2 is inwardly opened, at this point, spring 6 is compressed, and
Triggering is set to the switch 7 in bulkhead 12, and switch 7 opens lamp in control cabinet, avoids into as dark as a stack of black cats in cabin, can not find phase
The operating device answered.
The closure of raised line 8 is looped around doorway, interior door body 3 when closed, raised line 8 and 12 inner wall contact surface of bulkhead on contact surface
On raised line 8 be intermeshed.When door 1 is impacted, due to the presence of raised line 8, it ensure that door 1 is tightly fitted in bulkhead 12
On, dislocation deformation will not occur.Sealing joint strip is connected on raised line 8, sealing joint strip is pressed together between raised line 8, adhesive tape bending and laminating
Sealing effect it is more excellent, will not the gas leakage because of aging deformation.The quantity of raised line 8 can according to need setting, generally at least want
Engage 3 teeth.
The outer door body 2 is the dome shape of outwardly convex.The spherical structure of outwardly convex make life saving cabin door have resistance to compression,
The advantages that strong shock resistance.Baffle 9 is equipped with above the door 1.Baffle 9 can protect escape personnel and wait on survival capsule doorway
When, certain safe space is provided.The baffle 9 is arch bridge shape, and upper surface is equipped with several muscles and bones for intersecting protrusion.Baffle
9 be arch bridge shape, so that junk will not be accumulated on baffle 9, upper surface is equipped with several muscles and bones for intersecting protrusion, enhances gear
The resistance to compression of plate 9, impact resistance.On 2 outer surface of outer door body, it is fixed with the hand handle of position Yu 11 opposite side of articulated shaft
21.For hand handle far from articulated shaft 11, the arm of force is bigger, it is easier to push outer door body 2 open, when also personnel being facilitated to leave, pull on hand handle 21, close
Close life saving cabin door.
Workflow when mine disaster occurs：Before escape personnel quickly goes to life saving cabin door, baffle 9 is certain to provide before hatch door
Safety zone, escape personnel is slightly larger to push hand handle 21, and interior door body 3 is rotated along articulated shaft 11, quickly opened under the action of torsional spring 4
It opens.Card ball 5 is pressed into bulkhead 12 when outer door body 2 is inwardly opened, at this point, spring 6 is compressed, and is set to bulkhead in triggering
Switch 7 in 12, switch 7 open lamp in control cabinet.After escape personnel is completely into survival capsule, door 1 is closed, door 1
There is complete locking device in interior door body 3, hatch door can be locked completely from inside, sealing joint strip, sealing joint strip are connected on raised line 8
It is pressed together between raised line 8.
In conclusion the invention discloses a kind of down-hole survival capsule quick operating valves, life saving cabin door is set as internally opening, is kept away
Exempting from junk stops hatch door to be opened, and torsional spring is cased on articulated shaft, can quick opened door, card ball and spring constitutes opposite locking
Mechanism in interior door body and bulkhead inner wall contact surface, can be equipped with several intermeshing raised lines, guarantee by door with respect to clamping
Door is tightly fitted on bulkhead, and dislocation deformation will not occur.This down-hole survival capsule quick operating valve, which has, quickly to be opened, operation letter
The characteristics of list, stable structure, good airproof performance.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all utilizations
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content is applied directly or indirectly in other correlations
Technical field, be included within the scope of the present invention.
Claims (7)
1. a kind of down-hole survival capsule quick operating valve, including door（1）, articulated shaft（11）And bulkhead（12）, which is characterized in that the door
（1）Including outer door body（2）, interior door body（3）, torsional spring（4）, card ball（5）, spring（6）And switch（7）；The interior door body（3）Pass through
Articulated shaft（11）It is articulated with bulkhead（12）On inner wall, the articulated shaft（11）On be cased with torsional spring（4）And it is set to bulkhead（12）Left side
Or right side, make interior door body（3）The trend overturn in oriented cabin；The interior door body（3）On have the outer door body being linked together（2）, institute
State outer door body（2）By there is spring（6）The card ball of support（5）It is opposite when closing to block under effect；The card ball（5）In external door
Body（2）When unlatching, bulkhead can be pressed into（12）It is interior, and bulkhead is set in triggering（12）Interior switch（7）, lamp is opened in control cabinet.
2. a kind of down-hole survival capsule quick operating valve according to claim 1, it is characterised in that：The interior door body（3）And bulkhead
（12）On inner wall contact surface, it is equipped with several intermeshing raised lines（8）, the raised line（8）Closure is looped around doorway.
3. a kind of down-hole survival capsule quick operating valve according to claim 2, it is characterised in that：The intermeshing raised line
（8）On be connected with sealing joint strip, the sealing joint strip is pressed together on raised line（8）Between.
4. a kind of down-hole survival capsule quick operating valve according to claim 1, it is characterised in that：The outer door body（2）It is outside
The dome shape of protrusion.
5. a kind of down-hole survival capsule quick operating valve according to claim 1, it is characterised in that：The door（1）Top is equipped with gear
Plate（9）.
6. a kind of down-hole survival capsule quick operating valve according to claim 5, it is characterised in that：The baffle（9）For arch bridge shape,
Its upper surface is equipped with several muscles and bones for intersecting protrusion.
7. a kind of down-hole survival capsule quick operating valve described in one of -6 according to claim 1, it is characterised in that：The outer door body（2）
On outer surface, it is fixed with position and articulated shaft（11）The hand handle of opposite side（21）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810945549.6A CN108894817A (en) | 2018-08-20 | 2018-08-20 | A kind of down-hole survival capsule quick operating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810945549.6A CN108894817A (en) | 2018-08-20 | 2018-08-20 | A kind of down-hole survival capsule quick operating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108894817A true CN108894817A (en) | 2018-11-27 |
Family
ID=64354860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810945549.6A Withdrawn CN108894817A (en) | 2018-08-20 | 2018-08-20 | A kind of down-hole survival capsule quick operating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108894817A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111561801A (en) * | 2019-02-13 | 2020-08-21 | 青岛海尔特种电冰柜有限公司 | Automatic refrigerator opens door |
-
2018
- 2018-08-20 CN CN201810945549.6A patent/CN108894817A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111561801A (en) * | 2019-02-13 | 2020-08-21 | 青岛海尔特种电冰柜有限公司 | Automatic refrigerator opens door |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105927273B (en) | A kind of coal mine fire zone quick closure explosion relief door | |
| CN202157826U (en) | Ten-point anti-explosion locking door for refuge chamber | |
| CN102155250B (en) | Self-reset explosion-proof door | |
| CN108894817A (en) | A kind of down-hole survival capsule quick operating valve | |
| CN104088667A (en) | Underground coal mine refuge chamber protective air-tight door with emergency detection channels | |
| CN107795334A (en) | A kind of multifunctional anti-explosion door for mine | |
| CN102635298B (en) | Movable type escape capsule emergency escape door for mine | |
| CN108708766A (en) | A kind of mine escape capsule door | |
| CN201865692U (en) | Sealing cabin door of mobile hard body life-saving cabin for mine | |
| CN204098956U (en) | A kind of coal mine underground refuge chamber airtight blast door with Emergent detection passage | |
| CN102383704A (en) | Capsule door of rescue capsule used for mine | |
| CN209621101U (en) | A kind of explosion-proof pre-buried plugging during imminence of war door | |
| CN202325683U (en) | Closed explosion door | |
| CN205370648U (en) | Easily seek mining explosion vent safely with vice door | |
| CN202280476U (en) | Movable escape capsule | |
| CN205063698U (en) | A non -pressure safety explosion vent for negative pressure formula dust remover | |
| CN208718546U (en) | A kind of explosion release window | |
| CN205532115U (en) | A fire -retardant explosion -proof push -and -pull door gear for refuge chamber in pit | |
| CN201915992U (en) | Movable split emergency escape door for refuge capsule | |
| CN211524890U (en) | One-way exhaust device for refuge chamber | |
| CN110529017A (en) | Fire-proof escaping door | |
| CN208329977U (en) | A kind of closed guard gate's converting from wartime to peacetime production and vice versa auxiliary device | |
| CN202467412U (en) | Locking device for movable type rescue capsule sealing door for mining | |
| CN207485282U (en) | A kind of cave depot protects fireproof closing door without threshold | |
| CN202090951U (en) | Explosion-proof door for wellhead of coal mine inclined shaft |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181127 |