CN108545095A - A kind of underground ventilating air door pneumatic automatic stop block - Google Patents
A kind of underground ventilating air door pneumatic automatic stop block Download PDFInfo
- Publication number
- CN108545095A CN108545095A CN201810448020.3A CN201810448020A CN108545095A CN 108545095 A CN108545095 A CN 108545095A CN 201810448020 A CN201810448020 A CN 201810448020A CN 108545095 A CN108545095 A CN 108545095A
- Authority
- CN
- China
- Prior art keywords
- air door
- rotary shaft
- main rotary
- link arm
- pedestal
- 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.)
- Pending
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 238000003466 welding Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 abstract description 4
- 238000005520 cutting process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000007787 solid Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241000486406 Trachea Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K7/00—Railway stops fixed to permanent way; Track brakes or retarding apparatus fixed to permanent way; Sand tracks or the like
- B61K7/16—Positive railway stops
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention discloses a kind of underground ventilating air door pneumatic automatic stop blocks, including pulley, tracheae, Steering valve and pedestal, the pulley and Steering valve are each attached on air door metope, and steel wire rope is connected in pulley, one end of the steel wire rope is fixed with air door counterweight and is welded, and it is connect again with air door door leaf after the handle connection of the other end and Steering valve of steel wire rope, the tracheae is connected with Steering valve, Steering valve is connected into circuit air door counterweight with cylinder, cylinder is fixedly connected by actuating arm with main rotary shaft, the pedestal is seated below track, and chassis interior includes main rotary shaft, first driven shaft and second driven shaft, the main rotary shaft is set to the middle position of pedestal.Materials are simple, and in addition to switching valve and cylinder, remaining material is all made of waste and old I-steel or other steel gas cuttings, is welded, and application method is simple.
Description
Technical field
The present invention relates to colliery downhole equipment field, specially a kind of underground ventilating air door pneumatic automatic stop block.
Background technology
Ventilation air door car arrester is a kind of important measures for protecting air door to be hit, and is mounted on before and after air door, passes through in mine car
When, car arrester is opened, after mine car passes through, closes car arrester.
Present car arrester mostly uses steel wire rope by directive wheel to assemble, although this device disclosure satisfy that downhole production
Needs, but have the following problems：This device easily damages, and steel wire rope will change wheel to change firmly side at least through three
To, and must there are at least two to change wheel installation on the ground, it is frequently opening and closing among air door, rope is easily de-
Slot, and pulley easily damages, while maintenance measures are waited if do not oiled for a long time, car arrester opens difficulty, in turn results in air door
Difficulty is opened, so this Obstruct apparatus needs frequent inspection and repair, increases human input significantly.
Invention content
The purpose of the present invention is to provide a kind of underground ventilating air door pneumatic automatic stop blocks, to solve above-mentioned background technology
The problem of middle proposition.
To achieve the above object, the present invention provides the following technical solutions：A kind of underground ventilating air door pneumatic automatic stop block,
Including pulley, tracheae, Steering valve and pedestal, the pulley and Steering valve are each attached on air door metope, and in pulley
Steel wire rope is connected, one end of the steel wire rope is fixed with air door counterweight welds, and the other end and Steering valve of steel wire rope
Handle connection after connect again with air door door leaf, the tracheae is connected with Steering valve, and Steering valve is matched into circuit air door
Weight is connected to cylinder, and cylinder is fixedly connected by actuating arm with main rotary shaft, and the pedestal is seated track in the following, and pedestal
Inside includes main rotary shaft, first driven shaft and second driven shaft, and the main rotary shaft is set to the middle position of pedestal, and
It is attached by the first link arm between main rotary shaft and first driven shaft, the main rotary shaft and second driven shaft pass through second
Link arm is attached, and car lug is both provided on the inside of the first driven shaft and second driven shaft.
Preferably, the left end of first link arm is articulated with the lower surface of first driven shaft by axis pin, and first connects
The right end of arm is articulated with the left-hand face of main rotary shaft by axis pin, and the right end of second link arm is articulated with second by axis pin
The upper surface of driven shaft, and the left end of the second link arm is articulated with the right lateral surface of main rotary shaft by axis pin.
Preferably, one end of the fixed welding car lug of the inner surface of the first driven shaft and second driven shaft, and
And the other end of car lug is pressed on two tracks of track.
Preferably, second link arm is set to the rear of the first link arm, and the back side edge of the second link arm and pedestal
Spacing is equal to the spacing of the first link arm and pedestal front side edge.
Preferably, the car lug is provided with one group totally two, and every group of car lug is about main rotary shaft central symmetry
Setting.
Compared with prior art, the beneficial effects of the invention are as follows：
1. materials are simple, in addition to switching valve and cylinder, remaining material be all made of waste and old I-steel or other steel gas cuttings, welding and
At；Application method is simple；
2. after car arrester installs, before being open to traffic, by door opening, car arrester automatically turns on, and after being open to traffic, air door is closed, and is held up traffic
Device is automatically closed；Applicability is stronger, and since the closure of cylinder is preferable, car arrester can use in the tunnel for easily stockpiling water
Deng；Simple system, it is easy to maintain etc..
Description of the drawings
Fig. 1 is schematic diagram of the present invention；
Fig. 2 is part-structure vertical view of the present invention.
In figure：Air door counterweight 1, tracheae 2, pulley 3, steel wire rope 4, Steering valve 5, cylinder 6, pedestal 7, main rotary shaft 8,
One driven shaft 9, second driven shaft 10, car lug 11, track 12, the first link arm 13, the second link arm 14.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- 2 are please referred to Fig.1, the present invention provides a kind of technical solution：A kind of underground ventilating air door pneumatic automatic stop block, packet
Pulley 3, tracheae 2, Steering valve 5 and pedestal 7 are included, pulley 3 and Steering valve 5 are each attached on air door metope, and in pulley 3
Steel wire rope 4 is connected, one end of steel wire rope 4 is fixed with air door counterweight 1 welds, and the other end of steel wire rope 4 and Steering valve 5
Handle connection after connect again with air door door leaf, tracheae 2 is connected with Steering valve 5, Steering valve 5 into circuit air door counterweight
1 is connected to cylinder 6, and cylinder 6 is fixedly connected by actuating arm with main rotary shaft 8, and pedestal 7 is seated track 12 in the following, and bottom
7 inside of seat includes main rotary shaft 8, first driven shaft 9 and second driven shaft 10, and main rotary shaft 8 is set to the lean-with of pedestal 7
It sets, and is attached by the first link arm 13 between main rotary shaft 8 and first driven shaft 9, main rotary shaft 8 and second driven shaft
10 are attached by the second link arm 14, and first driven shaft 9 and 10 inside of second driven shaft are both provided with car lug 11.
Further, the left end of the first link arm 13 is articulated with the lower surface of first driven shaft 9 by axis pin, and first connects
The right end of arm 13 is articulated with the left-hand face of main rotary shaft 8 by axis pin, and the right end of the second link arm 14 is articulated with by axis pin
The upper surface of two driven shafts 10, and the left end of the second link arm 14 is articulated with the right lateral surface of main rotary shaft 8 by axis pin；
Further, one end of the fixed welding car lug 11 of the inner surface of first driven shaft 9 and second driven shaft 10, and
The other end of car lug 11 is pressed on two tracks of track 12；
Further, the second link arm 14 is set to the rear of the first link arm 13, and the second link arm 14 and the back side edge of pedestal 7
Spacing is equal to the spacing of the first link arm 13 and 7 front side edge of pedestal；
Further, car lug 11 is provided with one group totally two, and every group of car lug 11 is set about 8 central symmetry of main rotary shaft
It sets.
Embodiment 1
A kind of underground ventilating air door pneumatic automatic stop block, including pulley 3, tracheae 2, Steering valve 5 and pedestal 7, pulley 3 and turn
It is each attached on air door metope to valve 5, and has connected steel wire rope 4 in pulley 3, one end of steel wire rope 4 and air door counterweight 1 are solid
Fixed welding, and the other end of steel wire rope 4 connect with the handle of Steering valve 5 after connect again with air door door leaf, tracheae 2 and steering
Valve 5 is connected, and Steering valve 5 is connected into circuit air door counterweight 1 with cylinder 6, and cylinder 6 passes through actuating arm and main rotary shaft 8
Be fixedly connected, pedestal 7 be seated track 12 in the following, and the inside of pedestal 7 include main rotary shaft 8, first driven shaft 9 and second from
Moving axis 10, main rotary shaft 8 is set to the middle position of pedestal 7, and passes through first between main rotary shaft 8 and first driven shaft 9
Link arm 13 is attached, and main rotary shaft 8 and second driven shaft 10 are attached by the second link arm 14, first driven shaft 9 and
Two driven shafts, 10 inside is both provided with car lug 11.
Embodiment 2
A kind of underground ventilating air door pneumatic automatic stop block, including pulley 3, tracheae 2, Steering valve 5 and pedestal 7, pulley 3 and turn
It is each attached on air door metope to valve 5, and has connected steel wire rope 4 in pulley 3, one end of steel wire rope 4 and air door counterweight 1 are solid
Fixed welding, and the other end of steel wire rope 4 connect with the handle of Steering valve 5 after connect again with air door door leaf, tracheae 2 and steering
Valve 5 is connected, and Steering valve 5 is connected into circuit air door counterweight 1 with cylinder 6, and cylinder 6 passes through actuating arm and main rotary shaft 8
Be fixedly connected, pedestal 7 be seated track 12 in the following, and the inside of pedestal 7 include main rotary shaft 8, first driven shaft 9 and second from
Moving axis 10, main rotary shaft 8 is set to the middle position of pedestal 7, and passes through first between main rotary shaft 8 and first driven shaft 9
Link arm 13 is attached, and main rotary shaft 8 and second driven shaft 10 are attached by the second link arm 14, first driven shaft 9 and
Two driven shafts, 10 inside is both provided with car lug 11.
The left end of first link arm 13 is articulated with the lower surface of first driven shaft 9, and the right side of the first link arm 13 by axis pin
End is articulated with the left-hand face of main rotary shaft 8 by axis pin, and the right end of the second link arm 14 is articulated with second driven shaft by axis pin
10 upper surface, and the left end of the second link arm 14 is articulated with the right lateral surface of main rotary shaft 8 by axis pin.
Embodiment 3
A kind of underground ventilating air door pneumatic automatic stop block, including pulley 3, tracheae 2, Steering valve 5 and pedestal 7, pulley 3 and turn
It is each attached on air door metope to valve 5, and has connected steel wire rope 4 in pulley 3, one end of steel wire rope 4 and air door counterweight 1 are solid
Fixed welding, and the other end of steel wire rope 4 connect with the handle of Steering valve 5 after connect again with air door door leaf, tracheae 2 and steering
Valve 5 is connected, and Steering valve 5 is connected into circuit air door counterweight 1 with cylinder 6, and cylinder 6 passes through actuating arm and main rotary shaft 8
Be fixedly connected, pedestal 7 be seated track 12 in the following, and the inside of pedestal 7 include main rotary shaft 8, first driven shaft 9 and second from
Moving axis 10, main rotary shaft 8 is set to the middle position of pedestal 7, and passes through first between main rotary shaft 8 and first driven shaft 9
Link arm 13 is attached, and main rotary shaft 8 and second driven shaft 10 are attached by the second link arm 14, first driven shaft 9 and
Two driven shafts, 10 inside is both provided with car lug 11.
The left end of first link arm 13 is articulated with the lower surface of first driven shaft 9, and the right side of the first link arm 13 by axis pin
End is articulated with the left-hand face of main rotary shaft 8 by axis pin, and the right end of the second link arm 14 is articulated with second driven shaft by axis pin
10 upper surface, and the left end of the second link arm 14 is articulated with the right lateral surface of main rotary shaft 8 by axis pin.
One end of the fixed welding car lug 11 of the inner surface of first driven shaft 9 and second driven shaft 10, and keep off a car
The other end of device 11 is pressed on two tracks of track 12.
Embodiment 4
A kind of underground ventilating air door pneumatic automatic stop block, including pulley 3, tracheae 2, Steering valve 5 and pedestal 7, pulley 3 and turn
It is each attached on air door metope to valve 5, and has connected steel wire rope 4 in pulley 3, one end of steel wire rope 4 and air door counterweight 1 are solid
Fixed welding, and the other end of steel wire rope 4 connect with the handle of Steering valve 5 after connect again with air door door leaf, tracheae 2 and steering
Valve 5 is connected, and Steering valve 5 is connected into circuit air door counterweight 1 with cylinder 6, and cylinder 6 passes through actuating arm and main rotary shaft 8
Be fixedly connected, pedestal 7 be seated track 12 in the following, and the inside of pedestal 7 include main rotary shaft 8, first driven shaft 9 and second from
Moving axis 10, main rotary shaft 8 is set to the middle position of pedestal 7, and passes through first between main rotary shaft 8 and first driven shaft 9
Link arm 13 is attached, and main rotary shaft 8 and second driven shaft 10 are attached by the second link arm 14, first driven shaft 9 and
Two driven shafts, 10 inside is both provided with car lug 11.
The left end of first link arm 13 is articulated with the lower surface of first driven shaft 9, and the right side of the first link arm 13 by axis pin
End is articulated with the left-hand face of main rotary shaft 8 by axis pin, and the right end of the second link arm 14 is articulated with second driven shaft by axis pin
10 upper surface, and the left end of the second link arm 14 is articulated with the right lateral surface of main rotary shaft 8 by axis pin.
One end of the fixed welding car lug 11 of the inner surface of first driven shaft 9 and second driven shaft 10, and keep off a car
The other end of device 11 is pressed on two tracks of track 12.
Second link arm 14 is set to the rear of the first link arm 13, and the spacing of the second link arm 14 and the back side edge of pedestal 7
It is equal to the spacing of the first link arm 13 and 7 front side edge of pedestal.
Embodiment 5
A kind of underground ventilating air door pneumatic automatic stop block, including pulley 3, tracheae 2, Steering valve 5 and pedestal 7, pulley 3 and turn
It is each attached on air door metope to valve 5, and has connected steel wire rope 4 in pulley 3, one end of steel wire rope 4 and air door counterweight 1 are solid
Fixed welding, and the other end of steel wire rope 4 connect with the handle of Steering valve 5 after connect again with air door door leaf, tracheae 2 and steering
Valve 5 is connected, and Steering valve 5 is connected into circuit air door counterweight 1 with cylinder 6, and cylinder 6 passes through actuating arm and main rotary shaft 8
Be fixedly connected, pedestal 7 be seated track 12 in the following, and the inside of pedestal 7 include main rotary shaft 8, first driven shaft 9 and second from
Moving axis 10, main rotary shaft 8 is set to the middle position of pedestal 7, and passes through first between main rotary shaft 8 and first driven shaft 9
Link arm 13 is attached, and main rotary shaft 8 and second driven shaft 10 are attached by the second link arm 14, first driven shaft 9 and
Two driven shafts, 10 inside is both provided with car lug 11.
The left end of first link arm 13 is articulated with the lower surface of first driven shaft 9, and the right side of the first link arm 13 by axis pin
End is articulated with the left-hand face of main rotary shaft 8 by axis pin, and the right end of the second link arm 14 is articulated with second driven shaft by axis pin
10 upper surface, and the left end of the second link arm 14 is articulated with the right lateral surface of main rotary shaft 8 by axis pin.
One end of the fixed welding car lug 11 of the inner surface of first driven shaft 9 and second driven shaft 10, and keep off a car
The other end of device 11 is pressed on two tracks of track 12.
Second link arm 14 is set to the rear of the first link arm 13, and the spacing of the second link arm 14 and the back side edge of pedestal 7
It is equal to the spacing of the first link arm 13 and 7 front side edge of pedestal.
Car lug 11 is provided with one group totally two, and every group of car lug 11 is about 8 center symmetric setting of main rotary shaft.
Operation principle：By Steering valve 5 and underground pressure air piping connection, using underground pressure air pipeline as power gas source,
It is connected with by air door counterweight 1 and air door door leaf and the handle of Steering valve 5, is come as the power for opening and closing car arrester
Source, Steering valve 5 extend two tracheaes and are connect with pedestal tracheae；
Air door open when, cylinder 6 push main rotary shaft 8 overturn, main rotary shaft 8 drive both sides first driven shaft 9 and second from
Moving axis 10 is overturn, and car lug 11 is opened, and similarly, when air door is closed cylinder 6 is counter pushes away main rotary shaft 8, and main rotary shaft 8 drives both sides
First driven shaft 9 and the overturning of 10 negative direction of second driven shaft reset, and car lug 11 is closed.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of underground ventilating air door pneumatic automatic stop block, including pulley（3）, tracheae（2）, Steering valve（5）And pedestal
（7）, it is characterised in that：The pulley（3）And Steering valve（5）It is each attached on air door metope, and pulley（3）In connected
Steel wire rope（4）, the steel wire rope（4）One end and air door counterweight（1）Fixed welding, and steel wire rope（4）The other end with turn
To valve（5）Handle connection after connect again with air door door leaf, the tracheae（2）With Steering valve（5）It is connected, Steering valve
（5）Into circuit air door counterweight（1）And cylinder（6）Connection, cylinder（6）Pass through actuating arm and main rotary shaft（8）It is fixedly connected, institute
State pedestal（7）It is seated track（12）In the following, and pedestal（7）Inside includes main rotary shaft（8）, first driven shaft（9）With
Two driven shafts（10）, the main rotary shaft（8）It is set to pedestal（7）Middle position, and main rotary shaft（8）It is driven with first
Axis（9）Between pass through the first link arm（13）It is attached, the main rotary shaft（8）And second driven shaft（10）Pass through the second link arm
（14）It is attached, the first driven shaft（9）And second driven shaft（10）Inside is both provided with car lug（11）.
2. a kind of underground ventilating air door pneumatic automatic stop block according to claim 1, it is characterised in that：Described first connects
Arm（13）Left end first driven shaft is articulated with by axis pin（9）Lower surface, and the first link arm（13）Right end pass through pin
Axis is articulated with main rotary shaft（8）Left-hand face, second link arm（14）Right end second driven shaft is articulated with by axis pin
（10）Upper surface, and the second link arm（14）Left end main rotary shaft is articulated with by axis pin（8）Right lateral surface.
3. a kind of underground ventilating air door pneumatic automatic stop block according to claim 1, it is characterised in that：Described first from
Moving axis（9）And second driven shaft（10）The fixed welding car lug of inner surface（11）One end, and car lug（11）'s
The other end is pressed in track（12）Two tracks on.
4. a kind of underground ventilating air door pneumatic automatic stop block according to claim 1, it is characterised in that：Described second connects
Arm（14）It is set to the first link arm（13）Rear, and the second link arm（14）With pedestal（7）The spacing of back side edge be equal to
First link arm（13）With pedestal（7）The spacing of front side edge.
5. a kind of underground ventilating air door pneumatic automatic stop block according to claim 1, it is characterised in that：The car lug
（11）It is provided with one group totally two, and every group of car lug（11）About main rotary shaft（8）Center symmetric setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810448020.3A CN108545095A (en) | 2018-05-11 | 2018-05-11 | A kind of underground ventilating air door pneumatic automatic stop block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810448020.3A CN108545095A (en) | 2018-05-11 | 2018-05-11 | A kind of underground ventilating air door pneumatic automatic stop block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108545095A true CN108545095A (en) | 2018-09-18 |
Family
ID=63494351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810448020.3A Pending CN108545095A (en) | 2018-05-11 | 2018-05-11 | A kind of underground ventilating air door pneumatic automatic stop block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108545095A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268070A (en) * | 2018-11-20 | 2019-01-25 | 中煤新集能源股份有限公司 | Belt conveyor crosses air door anti-backflow device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040266329A1 (en) * | 2003-06-27 | 2004-12-30 | Kennedy William R. | Mine door system including an air pressure relief door |
| CN102431575A (en) * | 2011-12-06 | 2012-05-02 | 枣庄矿业（集团）有限责任公司柴里煤矿 | Air door interlocked car arrester |
| CN203362211U (en) * | 2013-07-17 | 2013-12-25 | 徐州矿务集团有限公司旗山煤矿 | Mine air door protection automatic interlocking car stop |
| CN205675036U (en) * | 2016-05-25 | 2016-11-09 | 李洪彪 | A kind of chain car arrester of pneumatic air door |
| CN208439259U (en) * | 2018-05-11 | 2019-01-29 | 河南中煤电气有限公司 | A kind of underground ventilating air door pneumatic automatic stop block |
-
2018
- 2018-05-11 CN CN201810448020.3A patent/CN108545095A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040266329A1 (en) * | 2003-06-27 | 2004-12-30 | Kennedy William R. | Mine door system including an air pressure relief door |
| CN102431575A (en) * | 2011-12-06 | 2012-05-02 | 枣庄矿业（集团）有限责任公司柴里煤矿 | Air door interlocked car arrester |
| CN203362211U (en) * | 2013-07-17 | 2013-12-25 | 徐州矿务集团有限公司旗山煤矿 | Mine air door protection automatic interlocking car stop |
| CN205675036U (en) * | 2016-05-25 | 2016-11-09 | 李洪彪 | A kind of chain car arrester of pneumatic air door |
| CN208439259U (en) * | 2018-05-11 | 2019-01-29 | 河南中煤电气有限公司 | A kind of underground ventilating air door pneumatic automatic stop block |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268070A (en) * | 2018-11-20 | 2019-01-25 | 中煤新集能源股份有限公司 | Belt conveyor crosses air door anti-backflow device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208266517U (en) | A kind of automatic overhead door | |
| CN102135007A (en) | Pneumatically-controlled locking device for mine air door | |
| CN108545095A (en) | A kind of underground ventilating air door pneumatic automatic stop block | |
| CN208439259U (en) | A kind of underground ventilating air door pneumatic automatic stop block | |
| CN205155312U (en) | Pneumatic two flap valve | |
| CN203806731U (en) | Bottom-dump tramcar unloading system | |
| CN105383854A (en) | Double-fork chute discharging device | |
| CN106593177B (en) | Large size vacuum vessel gate operating mechanism | |
| CN110905599A (en) | Explosion venting door for safety protection of coal mine fire area | |
| CN205189931U (en) | Pneumatic air door | |
| CN206035533U (en) | Pnematic suspension bridge type roadway water dam | |
| CN104251141A (en) | Downhole air door opening device and pneumatic control interlocking system thereof | |
| CN202593559U (en) | Trolley stopping door stop device for mine | |
| CN204656705U (en) | A kind of Novel mill feed system | |
| CN209741584U (en) | special turnout for single-rope traction endless rope continuous traction system | |
| CN206917519U (en) | A kind of interval partition door asymmetry door leaf | |
| CN108005720B (en) | A kind of horizontal protective sealed door blocked for subway ventilation road | |
| CN206158787U (en) | Tunnel ground fire prevention apron of fleing | |
| CN111845803A (en) | Ballast clamping preventing device of middle ballast unloading bottom door | |
| CN205526004U (en) | Install automatic unload mechanism on bottom discharge well -bucket additional | |
| CN103938942A (en) | Air door locking device | |
| CN215366745U (en) | Portable rice sand joint filling device | |
| CN210531627U (en) | Flap feed valve | |
| CN201934119U (en) | Windproof device | |
| CN209556797U (en) | A kind of laminar fire resistant doorsets |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180918 |