CN107386865A - Subway protection flooding-proof closing door gear - Google Patents
Subway protection flooding-proof closing door gear Download PDFInfo
- Publication number
- CN107386865A CN107386865A CN201710817397.7A CN201710817397A CN107386865A CN 107386865 A CN107386865 A CN 107386865A CN 201710817397 A CN201710817397 A CN 201710817397A CN 107386865 A CN107386865 A CN 107386865A
- Authority
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- China
- Prior art keywords
- door leaf
- door
- rocking arm
- subway
- square
- 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
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 229920003266 Leaf® Polymers 0.000 description 76
- 238000009434 installation Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
- E05F15/668—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings for overhead wings
- E05F15/681—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings for overhead wings operated by flexible elongated pulling elements, e.g. belts
- E05F15/686—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings for overhead wings operated by flexible elongated pulling elements, e.g. belts by cables or ropes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B1/00—General arrangement of stations, platforms, or sidings; Railway networks; Rail vehicle marshalling systems
- B61B1/02—General arrangement of stations and platforms including protection devices for the passengers
-
- 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
- E06B5/02—Doors, windows, or like closures for special purposes; Border constructions therefor for out-buildings or cellars; Other simple closures not designed to be close-fitting
- E06B5/025—Provisional closures, e.g. temporary security doors
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Special Wing (AREA)
Abstract
The present invention gives a kind of subway protection flooding-proof closing door gear；Including door leaf, guidance set, lifting assembly and limit assembly；Subway tunnel section can be completely covered in the area of door leaf, and door leaf bottom is provided with least one limit base；Guidance set includes two tracks coordinated with door leaf, and two tracks are arranged on door leaf both sides, and door leaf moves up and down along two tracks；Lifting assembly includes some hoist engines, and the hoist engine is used to drive door leaf to move up and down；Limit assembly includes rocking arm, and rocking arm, which is fixed, to be hinged on the outside of door leaf, and when door leaf is moved to highest stroke, rocking arm rotates, and rocking arm end is resisted against on the lower surface of door leaf limit base.This subway protection flooding-proof closing door gear has compared to conventional flooding-proof closing door：Simple in construction, the advantages that security is good, peripheral water stopping is good, and sealing strip is further compressed using hydraulic pressure, reach better seal effect.
Description
Technical field
The present invention relates to a kind of subway protection flooding-proof closing door gear.
Background technology
Safety control equipment of the flooding-proof closing door as subway, it is mainly used in complicated water system, long-term water storage or is located in marine site sea
The area on island.Subway is considered as at the tunnel both ends in disengaging waters when with waters such as underground line river crossing or lakes
Appropriate location sets flooding-proof closing door, to prevent from making flood enter tunnel and station because unexpected, avoids causing the large-scale person
Injures and deaths and property loss, effectively protect the safety of subsurface equipment and the person.
The form of flooding-proof closing door mainly has two kinds of a lift and flat-open type, flat-open type flood gate starting step is cumbersome,
In-convenience in use；Prior art is frequently with more universal lift flood gate, but current lift flood gate has
Have：Security requirement is high, peripheral water stopping is poor, and operation equipment is arranged in the side of water, and construction costs is high, and is unfavorable for equipment
The shortcomings that overhauling and safeguarding.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of subway protection flooding-proof closing simple in construction, security is good
Door gear.
In order to solve the above technical problems, the invention provides a kind of subway protection flooding-proof closing door gear；
Including at least door leaf, guidance set, lifting assembly and at least one set of limit assembly；
Subway tunnel section can be completely covered in the area of door leaf, and door leaf bottom is provided with least one limit base；
Guidance set includes two tracks with door leaf cooperation, and two tracks are arranged on door leaf both sides, and door leaf is along two rails
Road moves up and down；
Lifting assembly includes some hoist engines, and the hoist engine is used to drive door leaf to move up and down；
Limit assembly and the limit base of door leaf bottom correspond, and the limit assembly comprises at least rocking arm, and rocking arm is fixed
It is hinged on the outside of door leaf, when door leaf is moved to highest stroke, rocking arm rotates, and rocking arm end is resisted against under door leaf limit base
On end face.
After such structure, using lifting assembly hoist engine control door leaf in the track of guidance set on move down
Dynamic, when door leaf blocks subway tunnel completely, subway tunnel closing, most of current are by this subway protection flooding-proof closing door gear
Stop, can not directly impact subway platform；When subway transportation needs normal use, door leaf rises, and then operates limit assembly
Rocking arm end be resisted against the limit base lower end of door leaf, door leaf is fixed on the upside of subway tunnel, subway train can be normal
Travelled in subway tunnel.
This subway protection flooding-proof closing door gear has compared to conventional flooding-proof closing door：It is simple in construction, security is good, periphery
The advantages that sealing is good, and sealing strip is further compressed using hydraulic pressure, reach better seal effect.
For the clearer technology contents for understanding the present invention, this subway protection flooding-proof closing door gear is referred to as below
This closed door device.
This closed door device also includes locked component, and locked component includes electric motor clutch, some rotating shafts, some steering gears
With some square keepers, some rotating shafts and some square keepers are arranged on inside door leaf, and the output shaft of electric motor clutch passes through institute
State steering gear to be connected with rotating shaft, the end of some rotating shafts coordinates with square keeper threaded one end, and the square keeper other end stretches out door
Fan outside side wall；
The track of the guidance set corresponds to square keeper position and is provided with some slots for agreeing with square keeper.
After such structure, when door leaf is fallen and this closed door device is closed, locked component can make
Position is relatively fixed between door leaf and guidance set, increases the security of this closed door device.
The square keeper of this closed door device tilts to the upstream face of door leaf；After such structure, in square keeper
During stretching into guidance set slot, door leaf is close to the track close to door leaf back side side under the relative effect of track
On wall, the gap between track and door leaf is reduced, prevents the two from causing, into water, to further enhance this sealed door due to gap be present
The water resistance of device.
The limit assembly of this closed door device also includes motor, is connected between motor and rocking arm by gear transmission structure；
After such structure, limit assembly is facilitated to operate.
Some hoist engines of the lifting assembly of this closed door device are arranged on guidance set side, and it is fixed to be fixed with the upside of door leaf
Pulley, the steel wire rope of the hoist engine are fixed around the fixed pulley on the upside of door leaf and with door leaf upper end；After such structure,
Hoist engine, which is arranged on guidance set side, can make taking up space for lifting assembly be made rational planning for, and the setting of fixed pulley also may be used
To ensure that the lifting angle of door leaf is guaranteed.
Brief description of the drawings
Fig. 1 is the structural representation of this closed door device embodiment.
Fig. 2 is Fig. 1 left view.
Fig. 3 is the sectional view of this closed door device embodiment door leaf.
Fig. 4 is the structural representation of this closed door device embodiment limit assembly.
Fig. 5 is Fig. 4 along A-A to sectional view.
Fig. 6 is one of use state figure of this closed door device embodiment.
Fig. 7 is the two of the use state figure of this closed door device embodiment.
Embodiment
As shown in Fig. 1 to 5
This closed door device includes door leaf 1, guidance set, lifting assembly, locked component and two groups of limit assemblies.
Door leaf 1 is univalve door structure, and door leaf 1 is substantially square, and door leaf 1 belongs to the more Main Girder Welding steel construction pieces of plane, door leaf 1
It is simultaneously upstream face, another side is back side, and subway tunnel section, the both sides lower part of door leaf 1 can be completely covered in the area of door leaf 1
A limit base is not welded with.
Locked component includes electric motor clutch 21,22, five steering gears 23 of more rotating shafts and eight square keepers 24, motor
Clutch 21 is welded on the upper surface of door leaf 1, and the output shaft of electric motor clutch 21 is connected by five steering gears 23 with rotating shaft 22
Connect, four in five steering gears 23 and whole rotating shafts 22 are all arranged on the inside of door leaf 1.
The end of square keeper 24 is provided with installation screwed hole, installs the trend and the length direction of square keeper 24 of screwed hole
Unanimously, the installation screwed hole of the end of rotating shaft 22 and square one end of keeper 24 coordinates, and the end of rotating shaft 22 enters installation screwed hole
During interior range, square keeper 24 is completely in door leaf 1, it can be seen that, the depth for installing screwed hole determines square keeper
24 ultimate ranges stretched out outside door leafs 1, square keeper 24 and with the center line of its rotating shaft 22 being threadedly coupled on the same line,
The center line of rotating shaft 22 and square keeper 24 has one in the projection of horizontal plane and the upstream face of door leaf 1 between horizontal plane projection
Fixed angle, upstream face skew of the end of square keeper 24 to door leaf 1 outside extended door leaf 1 are close.
Guidance set includes two tracks coordinated with door leaf 1, and two tracks are made on doorframe 31 and two when building
Guide rail 32, the upper end open of doorframe 31, the both sides of doorframe 31 are provided with the chute moved up and down for door leaf 1, and the lower end of doorframe 31
Available for the downside of parcel door leaf 1, underground railway track is passed through in the lower end of doorframe 31, and is reserved in underground railway track both sides and be available for subway row
Sail safety clearance 31a (such as this closed door device need close when, rubber seal can be laid at the 31a of safety clearance, it is ensured that
It is fully sealed both when door leaf 1 and 31 times end in contact of doorframe), the sealing of door leaf 1 can be strengthened, two upper rails 32 are set respectively
Put and be respectively aligned to two chutes of doorframe 31 in the upside of doorframe 31, the position of upper rail 32, doorframe 31 is close to the backwater of door leaf 1
Face side is provided with the sealing device (such as sealing strip) coordinated with door leaf 1, and eight counterparties are also provided with the chute of the both sides of doorframe 31
The slot 31b of the position of shape keeper 24, slot 31b trend move towards identical with square keeper 24.
Lifting assembly includes two hoist engines 41, and two hoist engines 41 are fixed on door leaf 1 and guidance set side, and
The surface of guidance set is provided with four fixed pulleys 42, and four fixed pulleys 42 are two-by-two one group, and the steel wire rope of hoist engine 41 bypasses
Fixed pulley 42 and fixed with the hanger of the upper surface of door leaf 1, door leaf 1 can be driven along guidance set by the startup of hoist engine 41
Trend move up and down.
Two groups of limit assemblies are separately positioned on the upper end both sides of guidance set doorframe 31, limit assembly and the limit of the bottom of door leaf 1
Position seat corresponds, and every group of limit assembly includes Rocker arm 51 and motor 52, and motor 52 is welded on the upper end of doorframe 31, Rocker arm 51 and door
The upper end of frame 31 is connected, i.e., on the output shaft of motor 52 by hinge between motor 52 and Rocker arm 51 by gear transmission structure
Drive gear 53 is installed, driven gear 54 is welded with Rocker arm 51, is engaged between drive gear 53 and driven gear 54, rocking arm
End coordinates with the limit base in door leaf.
During design, this closed door device is arranged in the one or both sides of subway platform, is entering subway tunnel compared with mass-flow
This closed door device can be closed behind road, effectively plays the purpose for preventing current from directly impacting subway platform；
, it is necessary to build two upper and lower chambers along subway tunnel when building this closed door device, lower side cavity supplies door leaf 1
Subway tunnel is blocked, upper side cavity supplies to place door leaf 1 and its control device, the doorframe of guidance set during subway tunnel normal use
31 lower ends are fixed with downside chamber bottom, and underground railway track, the both sides of doorframe 31 and the both sides of lower side cavity are passed through in the lower end of doorframe 31
Side wall is fixed, and two upper rails 32 of guidance set and two fixed pulleys 42 of lifting assembly are fixed on upside chamber roof, carry
Two hoist engines 41 for rising component are in upper side cavity, and the height of door leaf 1 is slightly larger than the height of lower side cavity.
As shown in Figure 6
When subway is in normal operating condition, the motor 52 of limit assembly is controlled to drive the end of Rocker arm 51 to away from door leaf
1 direction is moved, and after Rocker arm 51 departs from door leaf 1, the hoist engine 41 for operating lifting assembly pulls door leaf 1 to move up, until door leaf 1
Upper end is moved to the extreme higher position of upper rail 32, the stopping of hoist engine 41 action, re-operates the motor 52 of limit assembly with motion rocker arm
51 end is resisted against the limit base lower end of door leaf 1, door leaf 1 is fixed on the upside of subway tunnel, herein can also be in upper rail
Travel switch is set in 32, conveniently realizes automation mechanized operation.
As shown in Figure 7
When subway tunnel needs closed state, the motor 52 of limit assembly is controlled to drive the end of Rocker arm 51 to away from door leaf
1 direction is moved, and after Rocker arm 51 departs from door leaf 1, the hoist engine 41 for operating lifting assembly drives door leaf 1 because self gravitation is to moving down
Dynamic, until the lower surface of door leaf 1 contacts with the bottom of doorframe 31, (bottom of doorframe 31 needs and subway Crane Rail matching design, is spy
Different processing, water-proofing treatment is done in the place contacted with underground railway track using block rubber)；
Then the electric motor clutch 21 of locked component is started, electric motor clutch 21 is by steering gear 23 by the steering of output shaft
Torque and steering angle carry out appropriate conversion and are transferred to each rotating shaft 22, and the relatively square keeper 24 of rotating shaft 22 rotates, then
Drive eight square keepers 24 mobile (square keeper 24 is all in door leaf 1 during default conditions) to the outside of door leaf 1, due to square
Upstream face skew of the end of keeper 24 to door leaf 1 is close, and during keeper stretches into the slot 31b of doorframe 31, door leaf 1 is in doorframe
It is close under 31 relative effect on the doorframe 31 of the back side side of door leaf 1, between reducing between doorframe 31 and door leaf 1
Gap, prevent the two from causing due to gap be present into water, further enhance the water resistance of this closed door device.
In addition, connectivity part can only accommodate door leaf 1 and pass through between upper side cavity and lower side cavity, the upper end of door leaf 1 stretches out
There is sealing plate, prevent current from entering upper side cavity from lower side cavity, and door leaf 1 and track and subway tunnel edge are all by close
Seal apparatus seals.
Above-described is only one embodiment of the present invention, it is noted that for one of ordinary skill in the art
For, under the premise without departing from the principles of the invention, some variations and modifications can also be made, these also should be regarded as belonging to this hair
Bright protection domain.
Claims (5)
1. a kind of subway protection flooding-proof closing door gear, it is characterized in that：
Including at least door leaf, guidance set, lifting assembly and at least one set of limit assembly；
Subway tunnel section can be completely covered in the area of door leaf, and door leaf bottom is provided with least one limit base；
Guidance set includes two tracks with door leaf cooperation, and two tracks are arranged on door leaf both sides, door leaf along two tracks,
Lower movement；
Lifting assembly includes some hoist engines, and the hoist engine is used to drive door leaf to move up and down；
Limit assembly and the limit base of door leaf bottom correspond, and the limit assembly comprises at least rocking arm, and rocking arm is fixed be hinged
On the outside of door leaf, when door leaf is moved to highest stroke, rocking arm rotates, and rocking arm end is resisted against the lower surface of door leaf limit base
On.
2. subway protection flooding-proof closing door gear according to claim 1, it is characterized in that：
Also including locked component, locked component includes electric motor clutch, some rotating shafts, some steering gears and some square keepers,
Some rotating shafts and some square keepers are arranged on inside door leaf, and the output shaft of electric motor clutch is connected by the steering gear and rotating shaft
Connect, the end of some rotating shafts coordinates with square keeper threaded one end, and the square keeper other end is stretched out outside door leaf side wall；
The track of the guidance set corresponds to square keeper position and is provided with some slots for agreeing with square keeper.
3. subway protection flooding-proof closing door gear according to claim 2, it is characterized in that：
Square keeper tilts to the upstream face of door leaf.
4. subway protection flooding-proof closing door gear according to claim 1, it is characterized in that：
The limit assembly also includes motor, is connected between motor and rocking arm by gear transmission structure.
5. subway protection flooding-proof closing door gear according to claim 1, it is characterized in that：
Some hoist engines of the lifting assembly are arranged on guidance set side, and fixed pulley, the elevator are fixed with the upside of door leaf
The steel wire rope of machine is fixed around the fixed pulley on the upside of door leaf and with door leaf upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710817397.7A CN107386865A (en) | 2017-09-12 | 2017-09-12 | Subway protection flooding-proof closing door gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710817397.7A CN107386865A (en) | 2017-09-12 | 2017-09-12 | Subway protection flooding-proof closing door gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107386865A true CN107386865A (en) | 2017-11-24 |
Family
ID=60351602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710817397.7A Pending CN107386865A (en) | 2017-09-12 | 2017-09-12 | Subway protection flooding-proof closing door gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107386865A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104873A (en) * | 2017-12-26 | 2018-06-01 | 中国水利水电夹江水工机械有限公司 | A kind of Flood gate of winding type |
| CN108625899A (en) * | 2018-04-24 | 2018-10-09 | 上海民防建筑研究设计院有限公司 | A kind of lift type Subway Tunnel flood protective airtight partition door |
| CN111101816A (en) * | 2020-01-03 | 2020-05-05 | 陈柏凤 | People's air defense door that can go on opening by lift and rotatory dual mode |
| CN113251921A (en) * | 2021-05-11 | 2021-08-13 | 成都天仁民防科技有限公司 | System and method for detecting lifting in place of flooding-proof lifting wind pavilion |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2816158A1 (en) * | 1977-04-15 | 1978-10-26 | Intellectual Trade Cy Sa | Waste disposal hatch, with container - consists of fixed part mounted in wall opening, and mobile part tilting on fixed part, with guide rollers |
| CN202325101U (en) * | 2011-12-01 | 2012-07-11 | 中国建筑标准设计研究院 | Gate falling type protective, closed and anti-flood gate |
| CN106593234A (en) * | 2016-12-19 | 2017-04-26 | 中国建筑标准设计研究院有限公司 | Flood gate used for subway curved section |
| CN207296725U (en) * | 2017-09-12 | 2018-05-01 | 安徽人防设备有限公司 | Subway protection flooding-proof closing door gear |
-
2017
- 2017-09-12 CN CN201710817397.7A patent/CN107386865A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2816158A1 (en) * | 1977-04-15 | 1978-10-26 | Intellectual Trade Cy Sa | Waste disposal hatch, with container - consists of fixed part mounted in wall opening, and mobile part tilting on fixed part, with guide rollers |
| CN202325101U (en) * | 2011-12-01 | 2012-07-11 | 中国建筑标准设计研究院 | Gate falling type protective, closed and anti-flood gate |
| CN106593234A (en) * | 2016-12-19 | 2017-04-26 | 中国建筑标准设计研究院有限公司 | Flood gate used for subway curved section |
| CN207296725U (en) * | 2017-09-12 | 2018-05-01 | 安徽人防设备有限公司 | Subway protection flooding-proof closing door gear |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104873A (en) * | 2017-12-26 | 2018-06-01 | 中国水利水电夹江水工机械有限公司 | A kind of Flood gate of winding type |
| CN108625899A (en) * | 2018-04-24 | 2018-10-09 | 上海民防建筑研究设计院有限公司 | A kind of lift type Subway Tunnel flood protective airtight partition door |
| CN108625899B (en) * | 2018-04-24 | 2020-05-08 | 上海民防建筑研究设计院有限公司 | Elevator type metro section flood-proof protective closed partition door |
| CN111101816A (en) * | 2020-01-03 | 2020-05-05 | 陈柏凤 | People's air defense door that can go on opening by lift and rotatory dual mode |
| CN111101816B (en) * | 2020-01-03 | 2021-07-16 | 海南崖盾人防工程有限公司 | People's air defense door that can go on opening by lift and rotatory dual mode |
| CN113251921A (en) * | 2021-05-11 | 2021-08-13 | 成都天仁民防科技有限公司 | System and method for detecting lifting in place of flooding-proof lifting wind pavilion |
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Application publication date: 20171124 |
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