CN107143263B - Single-leaf protective airtight door for doorway - Google Patents
Single-leaf protective airtight door for doorway Download PDFInfo
- Publication number
- CN107143263B CN107143263B CN201710601596.4A CN201710601596A CN107143263B CN 107143263 B CN107143263 B CN 107143263B CN 201710601596 A CN201710601596 A CN 201710601596A CN 107143263 B CN107143263 B CN 107143263B
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- sealing
- door
- lock head
- door leaf
- leaf
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- 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
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- 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
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/70—Door leaves
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- 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
- E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
- E06B7/18—Sealing arrangements on wings or parts co-operating with the wings by means of movable edgings, e.g. draught sealings additionally used for bolting, e.g. by spring force or with operating lever
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Abstract
The invention provides a single-leaf protective airtight door for an access, which comprises a door frame, a door leaf, a locking assembly and a bottom sealing mechanism, wherein the lower threshold of the door frame is flush with the ground, the locking assembly comprises a side lock head and a first driving device, the side lock head is connected with the door leaf, and the first driving device is connected with the center of a first transmission rod with two ends connected with the side lock head through a first driving rod; the bottom sealing mechanism comprises a lower lock head, a sealing beam and a pin shaft, wherein the lower lock head is in driving connection with the door leaf, a through lock head sleeve is fixed in the sealing beam, and the pin shaft penetrates through the lower lock head and the lock head sleeve to extend out so as to fixedly connect the sealing beam with the lower lock head. The threshold of the single protective airtight door is flush with the ground, a movable threshold is not required to be installed in a war, the single protective airtight door is convenient to pass at ordinary times, and the functions of quick closing in place and protective airtight in the war can be realized; the lower lock head is matched with the lock hole, so that the sealing reliability is enhanced, and the shock resistance is improved; the locking assembly is arranged to facilitate operation and realize quick opening and closing.
Description
Technical Field
The invention relates to civil air defense orifice equipment, in particular to a single-leaf protective airtight door for an entrance.
Background
The single civil air defense door at the entrance and the exit is mostly used for people evacuation channels with smaller aperture sizes, most of the prior equipment adopts the scheme that a valve threshold structure is shown in fig. 1, namely, a threshold 101 is not installed at ordinary times, when the civil air defense door 102 is required to be closed in the war, the movable threshold 101 is installed, the mode has the advantages of simple design, no need of independently designing a sealing mechanism, but slow conversion speed in the war, the movable threshold 101 is required to be installed on site, and the movable threshold 101 is easy to damage and lose in the storage.
Disclosure of Invention
The invention aims to provide a novel single-leaf protective airtight door for an entrance, which is used for realizing rapid opening and closing and protective airtight of the door under the condition of no threshold, and has reliable sealing and strong shock resistance.
In order to achieve the above object, the present invention provides a single-leaf protective airtight door for a doorway, comprising a door frame assembly, a door leaf, a locking assembly and a bottom sealing mechanism, wherein the door frame assembly is provided with a side door frame and a lower door sill, the door leaf is locked on the side door frame of the door frame assembly through the locking assembly, and the sealing between the door leaf and the lower door sill is realized through the bottom sealing mechanism; the bottom sealing mechanism comprises a lower lock head, a sealing beam and a pin shaft, wherein the lower lock head is in driving connection with the door leaf, a through lock head sleeve is fixed in the sealing beam, the pin shaft penetrates through the lower lock head and the lock head sleeve to extend out so as to fixedly connect the sealing beam with the lower lock head, a lock hole is formed in a lower threshold, and the lower lock head extending out of the lock head sleeve is detachably locked in the lock hole.
The first transmission rod is vertically arranged on the left side and the right side of the door leaf, the side locking heads are vertically connected to the upper end and the lower end of the first transmission rod, and the lower locking heads are vertically arranged at the bottom of the door leaf.
The first driving rod comprises a screw sleeve with one end connected with the first driving device and a transverse screw rod inserted into the other end of the screw sleeve and provided with external threads matched with the screw sleeve, the screw sleeve is fixed at the output end of the first driving device by a fastener, and the transverse screw rod is connected with the first transmission rod by a fixed joint.
The number of the side locking heads is four, and the number of the lower locking heads is two.
And a flat steel is welded on one side of the sealing beam, which faces the door leaf, and a sealing rubber strip is fixed on one side of the door leaf, which faces the sealing beam, and the flat steel extrudes the sealing rubber strip to form a seal.
The sealing beam is H-shaped steel, one side of the sealing beam facing the door leaf is provided with a first sealing baffle plate, the first sealing baffle plate extends perpendicular to the two wing plates of the sealing beam and connects the two wing plates, and flat steel is welded on one side of the first sealing baffle plate facing the door leaf.
The lock head is restrained in the moving direction by a lock seat fixed on the inner panel of the door leaf.
The inner panel of the door leaf close to the sealing beam is provided with a reinforcing hook.
The first driving device is a speed reducer, and the bottom sealing mechanism further comprises a second speed reducer for driving the lower lock head.
The side sealing glue block is fixed at the joint of the side door frame and the lower door threshold through a vertical second sealing baffle welded on the side door frame and a screw, and the protruding part of one end of the sealing beam, which is close to the side door frame, is formed into the side edge.
The threshold of the single-leaf protective airtight door for the doorway provided by the invention is flush with the ground, the movable threshold is not required to be detached at ordinary times and is installed in a battle, the bottom seal of the single-leaf protective airtight door adopts an independent driving device to drive the sealing beam to move up and down, and the aim of sealing and isolating the inside and outside is achieved under the condition of no threshold, so that the single-leaf protective airtight door for the doorway has no threshold which protrudes out of the ground, is convenient for passing at ordinary times, can accelerate the conversion speed in the battle, and is quickly closed in place in the battle, thereby realizing the protection and airtight functions; meanwhile, the locking head of the sealing assembly is matched with the locking hole of the lower threshold, so that the sealing reliability of the sealing assembly and the inner panel of the door leaf as well as the lower threshold is enhanced, and the shock resistance of the bottom sealing beam is improved; the arrangement in the locking assembly enables the single door leaf to be closed under the driving of the driving device, the operation is simple and convenient, the error is small, the displacement is reliable, and the quick opening and closing is realized.
Drawings
FIG. 1 is a schematic view of a prior art shutter sill structure of a protective airtight door;
FIG. 2 is a schematic view of a single-leaf protective airtight door for an doorway according to one embodiment of the present invention;
FIG. 3 is a schematic view of the door leaf adhesive tape of the single-leaf protective airtight door of the doorway shown in FIG. 2;
FIG. 4 is a partial cross-sectional view taken along the direction A-A of FIG. 2;
fig. 5 is a partial schematic view of the bottom structure of the single-leaf protective airtight door of the doorway shown in fig. 2.
Detailed Description
Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 2, a schematic structural view of a single door security seal according to an embodiment of the present invention includes a door frame assembly 1, a door leaf 2, a latch assembly 3, and a bottom sealing mechanism 4. The door frame assembly 1 comprises a side door frame 11, an upper door frame 12 and a lower door sill 13 which are arranged through screw fixation, wherein locking holes are formed in the side door frame 11 and the lower door sill 13 and used for accommodating a lock head of the locking assembly 3. The door leaf 2 is an independent door leaf and has an inner panel 24. The door leaf 2 is locked to the side door frame 11 of the door frame assembly 1 by the locking assembly 3. The seal between the door leaf 2 and the lower threshold 13 is achieved by means of the bottom sealing mechanism 4.
The locking assembly 3 comprises four side locking heads 32 and a first speed reducer 31 for driving the side locking heads 32 to transversely move, wherein the side locking heads 32 are symmetrically arranged at four corners close to the door leaf 2 respectively and are restrained by side locking seats 321 fixed on the inner panel 24 of the door leaf, so that the side locking heads 32 move along the horizontal direction. The left and right ends of the first speed reducer 31 are each connected to a horizontal first driving rod 33. The first driving rod 33 includes a screw sleeve 331 having one end connected to the first speed reducer 31, and a transverse screw 332 inserted into the other end of the screw sleeve 331 and having external threads matched thereto, and the screw sleeve 331 is fixed to the output end of the first speed reducer 31 by a fastener. The transverse screw 332 is connected to the center of a first transmission rod 34 vertically arranged at the left and right sides of the door leaf 2 through a fixed joint 35. The two ends of the first transmission rod 34 are vertically connected with the side locking head 32. Thus, the output end of the first speed reducer drives the screw sleeve 331 to rotate, drives the transverse screw 332 of the first driving rod 33 to stretch out and draw back relative to the screw sleeve 331, and drives the side lock 32 to extend or retract towards the side door frame 11.
The bottom sealing mechanism 4 comprises a lower lock 41, a sealing beam 42, a pin 43 and a second speed reducer 44. The lower lock 41 is connected to the inner panel 24 of the door 2 through a lower lock mount 411, and is movable in the vertical direction by the second speed reducer 44. The second speed reducer 44 is connected with the lower lock 41 through a transmission assembly, and comprises a vertical second driving rod 45, wherein the second driving rod 45 comprises a second screw sleeve 451, one end of which is connected with the second speed reducer 44, and a second vertical screw 452, which is inserted into the other end of the second screw sleeve 451 and provided with external threads matched with the second screw sleeve 451, and the second vertical screw 452 is connected with the center of a transverse second driving rod 46 through a fixed joint 35. The two ends of the second transmission rod 46 are connected with the lower lock 41 in a hanging way. Thus, the output end of the second speed reducer 44 drives the second screw sleeve 451 to rotate, drives the second vertical screw 452 of the second driving rod 45 to stretch relative to the second screw sleeve 451, and drives the lower lock 41 to extend or retract toward the lower threshold 13. The seal beam 42 is provided at the bottom of the door 2, and a through lock cylinder 421 is welded to the seal beam 42 at a position corresponding to the lower lock 41. The lower lock 41 has a first pin hole, the lock sleeve 421 has a second pin hole, and the pin shaft 43 sequentially passes through the first pin hole and the second pin hole to fixedly connect the lower lock 41 to the lock sleeve 421, thereby relatively fixing the sealing beam 42 to the lower lock 41 and being movable in a vertical direction along with the lower lock 41. The inner panel 24 of the door leaf, which is close to the sealing beam 42, is provided with a reinforcing hook 6 for limiting the relative position of the sealing beam 42 and the inner panel 24 of the door leaf, ensuring the sealing between the bottom sealing mechanism 4 and the door leaf 2, and sharing the impact force born by the lock head under the condition of larger shock wave load. The base 61 of the reinforcing hook 6 is connected to the door inner panel 24 by bolts, and the bottom surface of the base 61 is not lower than the bottom surface of the lock base 411. The lower door sill 13 has a locking hole (not shown) into which the lower lock 41 protruding from the lock cylinder 421 is inserted and withdrawn by the driving of the second speed reducer 44, thereby locking or unlocking the door leaf 2 with respect to the lower door sill 13.
In order to achieve the sealing of the door leaf, as shown in fig. 3, an adhesive strip assembly 25 is provided on the door leaf inner panel 24. The adhesive tape assembly 25 comprises an omega-shaped sealing adhesive tape 251 arranged at the upper and lower edges of the door inner panel 24 and on one side close to the side door frame 11, a pressing plate 252 is arranged at the edge of the upper surface of the omega-shaped sealing adhesive tape 251, and a plurality of long screws 253 penetrate through the pressing plate 252 and the omega-shaped sealing adhesive tape 251 to fasten the door. Preferably, the bottom surface of the lower lock 41 (as shown in fig. 3) adopts an inclined plane design, and when the lower lock 41 gradually enters the locking hole on the lower threshold 13, the sealing beam 42 is driven to move towards the door leaf 2, so that the sealing between the door leaf 2 and the omega-shaped sealing rubber strip 251 is extruded. When the door leaf is closed, the upper adhesive tape, the side adhesive tape and the door frame are tightly pressed, and the lower adhesive tape and the sealing beam 42 are tightly pressed, so that the door leaf is sealed.
The specific structure of the omega-shaped sealing strip 251 on the lower edge of the door inner panel 24 and the sealing beam 42 press fit when the door is closed is shown in fig. 4. Fig. 4 is a partial sectional view in the direction a-a of fig. 2, which is provided with a first sealing flap 422 on the side close to the door leaf 2, which first sealing flap 422 extends perpendicularly to and connects the two wings of the sealing beam 42. A long flat steel 423 is welded to the side of the first sealing panel 422 facing the door 2. When the sealing beam 42 moves downwards to a given position along with the lower lock 41, the strip flat steel 423 presses the omega sealing rubber strip 251 at the lower edge of the door leaf inner panel 24 to form a seal, so that the door leaf 2 is sealed relative to the bottom sealing mechanism 4.
Fig. 5 is a schematic view of the bottom structure of the single-leaf protective airtight door of the doorway shown in fig. 2, and in order to achieve the side sealing of the sealing beam, a side sealing glue block 111 and a side edge 425 are provided between the side door frame 11 and the sealing beam 42. A second sealing baffle 112 extending vertically is welded on the side door frame 11, and the side sealing glue block 111 is fixed at the joint of the side door frame 11 and the lower door sill 13 through the second sealing baffle 112 and screws. The protruding portions of the two sealing beams 42 near one ends of the side door frames are formed as side edges 425, and when the sealing beams 42 move downward to a predetermined position along with the lower lock 41, the side edges 425 press and compress the side sealing glue blocks 111 to form a seal, thereby realizing the bottom sealing of the door leaf 2 relative to the side door frames 11.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and various modifications can be made to the above-described embodiment of the present invention. All simple, equivalent changes and modifications made in accordance with the claims and the specification of this application fall within the scope of the patent claims. The present invention is not described in detail in the conventional art.
Claims (4)
1. The utility model provides a single-leaf protective airtight door of access & exit, includes door frame subassembly (1), door leaf (2), locking subassembly (3) and bottom sealing mechanism (4), door frame subassembly (1) have side door frame (11) and lower threshold (13), and door leaf (2) lock on side door frame (11) of door frame subassembly (1) through locking subassembly (3), and the seal between door leaf (2) and lower threshold (13) is realized through bottom sealing mechanism (4), its characterized in that, lower threshold (13) flush with ground,
the locking assembly (3) comprises a side locking head (32) and a first driving device (31) for driving the side locking head to move, the side locking head (32) is connected to the door leaf (2), the first driving device (31) is connected to the center of a first transmission rod (34) through a first driving rod (33), two ends of the first transmission rod (34) are respectively connected with the side locking head (32), a lock hole is formed in a side door frame (11), and the side locking head (32) is detachably locked in the lock hole;
the bottom sealing mechanism (4) comprises a lower lock head (41), a sealing beam (42) and a pin shaft (43), wherein the lower lock head (41) is in driving connection with the door leaf (2), a through lock head sleeve (421) is fixed in the sealing beam (42), the pin shaft (43) penetrates through the lower lock head (41) and the lock head sleeve (421) to extend out so as to fixedly connect the lower lock head (41) with the lock head sleeve (421), a lock hole is formed in the lower threshold (13), and the lower lock head (41) extending out of the lock head sleeve (421) is detachably locked in the lock hole;
the first driving device (31) is a speed reducer, and the bottom sealing mechanism (4) further comprises a second speed reducer (44) for driving the lower tapered end (41);
the first driving rod (33) comprises a screw sleeve (331) with one end connected with the first driving device (31) and a transverse screw (332) inserted into the other end of the screw sleeve (331) and provided with external threads matched with the screw sleeve, the screw sleeve (331) is fixed at the output end of the first driving device (31) by a fastening piece, and the transverse screw (332) is connected with the first transmission rod (34) by a fixed joint (35);
the second speed reducer (44) is connected with the lower tapered end (41) through a transmission assembly, the transmission assembly comprises a vertical second driving rod (45), the second driving rod (45) comprises a second screw sleeve (451) with one end connected with the second speed reducer (44) and a second vertical screw (452) inserted into the other end of the second screw sleeve (451) and provided with external threads matched with the second screw sleeve, and the second vertical screw (452) is connected with the center of a transverse second driving rod (46) through a fixed joint (35); two ends of the second transmission rod (46) are connected with the lower lock head (41) in a hanging way;
the side lock head (32) and the lower lock head (41) are respectively restrained in the moving direction by a side lock seat (321) and a lower lock seat (411) which are fixed on the inner panel (24) of the door leaf;
a reinforcing hook (6) is arranged on the inner panel (24) of the door leaf close to the sealing beam (42);
a flat steel (423) is welded on one side of the sealing beam (42) facing the door leaf (2), a sealing rubber strip (251) is fixed on one side of the door leaf (2) facing the sealing beam (42), and the flat steel extrudes the sealing rubber strip (251) to form a seal;
the sealing beam (42) is H-shaped steel, one side of the sealing beam facing the door leaf is provided with a first sealing baffle plate (422), the first sealing baffle plate (422) extends perpendicular to the two wing plates of the sealing beam (42) and connects the two wing plates, and flat steel (423) is welded on one side of the first sealing baffle plate (422) facing the door leaf;
the bottom surface of lower tapered end (41) adopts the inclined plane design, and when lower tapered end (41) got into the locking lockhole on lower threshold (13) gradually, drive sealed roof beam (42) and produce the trend of moving towards door leaf (2), when sealed roof beam (42) along with lower tapered end (41) downward movement to the established position, rectangular band steel (423) extrusion door leaf inner panel (24) lower limb joint strip (251) formed the seal.
2. The single-leaf protective airtight door of the doorway according to claim 1, wherein the first transmission rods (34) are vertically arranged at the left side and the right side of the door leaf (2), and the side locking heads (32) are vertically connected to the upper end and the lower end of the first transmission rods (34).
3. The single-leaf protective airtight door of the doorway according to claim 1, characterized in that the number of the side locking heads (32) is four, the number of the lower locking heads (41) is two, and the lower locking heads (41) are vertically arranged at the bottom of the door leaf (2).
4. The single-leaf protective airtight door for the doorway according to claim 1, wherein a side sealing glue block (111) and a side edge (425) are arranged between the side door frame (11) and the sealing beam (42), the side sealing glue block (111) is fixed at the joint of the side door frame (11) and the lower door sill (13) through a vertical second sealing baffle (112) welded on the side door frame (11) and a screw, and a protruding part of one end of the sealing beam (42) close to the side door frame is formed into the side edge (425).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710601596.4A CN107143263B (en) | 2017-07-21 | 2017-07-21 | Single-leaf protective airtight door for doorway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710601596.4A CN107143263B (en) | 2017-07-21 | 2017-07-21 | Single-leaf protective airtight door for doorway |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107143263A CN107143263A (en) | 2017-09-08 |
| CN107143263B true CN107143263B (en) | 2023-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710601596.4A Active CN107143263B (en) | 2017-07-21 | 2017-07-21 | Single-leaf protective airtight door for doorway |
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| Country | Link |
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| CN (1) | CN107143263B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267909A (en) * | 2018-11-28 | 2019-01-25 | 中国建筑标准设计研究院有限公司 | Slide rail type level blocks steel structural protective sealed door and its construction method |
| CN110409916B (en) * | 2019-08-13 | 2024-04-12 | 中国城市建设研究院有限公司 | Mortise lock mechanism for protective door and protective door thereof |
| CN110374457A (en) * | 2019-08-20 | 2019-10-25 | 中国人民解放军军事科学院国防工程研究院 | A kind of people's air defense doorsill device for barrier free accessibility |
| CN110630327B (en) * | 2019-08-27 | 2021-01-05 | 嘉兴运达智能设备有限公司 | Mechanical logic structure applied to operation mode switching of electric protective door of railway tunnel |
Citations (6)
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| CN2386162Y (en) * | 1999-09-13 | 2000-07-05 | 中国人民解放军总参谋部工程兵第四设计研究院 | Protective closed partion door for subway and civil air defence |
| CN202249335U (en) * | 2011-08-24 | 2012-05-30 | 杭州钱江人防设备有限公司 | Sill closed beam elevating mechanism for preventing a closed fire-blocking door |
| CN103266837A (en) * | 2013-05-21 | 2013-08-28 | 中国人民解放军总参谋部工程兵第四设计研究院 | Oversized single-leaf protection airtight separation door for single-tunnel double-line section of metro |
| CN103498698A (en) * | 2013-10-22 | 2014-01-08 | 中国人民解放军理工大学 | Double type subway door sealing and separating device |
| CN204311881U (en) * | 2014-11-04 | 2015-05-06 | 中国建筑标准设计研究院有限公司 | A kind of blocking device of Flood gate of holding concurrently for subway tunnel protection airtight |
| CN206942554U (en) * | 2017-07-21 | 2018-01-30 | 上海民防建筑研究设计院有限公司 | Singly fan airtight blast door in a kind of gateway |
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2017
- 2017-07-21 CN CN201710601596.4A patent/CN107143263B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2386162Y (en) * | 1999-09-13 | 2000-07-05 | 中国人民解放军总参谋部工程兵第四设计研究院 | Protective closed partion door for subway and civil air defence |
| CN202249335U (en) * | 2011-08-24 | 2012-05-30 | 杭州钱江人防设备有限公司 | Sill closed beam elevating mechanism for preventing a closed fire-blocking door |
| CN103266837A (en) * | 2013-05-21 | 2013-08-28 | 中国人民解放军总参谋部工程兵第四设计研究院 | Oversized single-leaf protection airtight separation door for single-tunnel double-line section of metro |
| CN103498698A (en) * | 2013-10-22 | 2014-01-08 | 中国人民解放军理工大学 | Double type subway door sealing and separating device |
| CN204311881U (en) * | 2014-11-04 | 2015-05-06 | 中国建筑标准设计研究院有限公司 | A kind of blocking device of Flood gate of holding concurrently for subway tunnel protection airtight |
| CN206942554U (en) * | 2017-07-21 | 2018-01-30 | 上海民防建筑研究设计院有限公司 | Singly fan airtight blast door in a kind of gateway |
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| CN107143263A (en) | 2017-09-08 |
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Address after: 201700 room 209, 2 story D, 2 building, 349 West Cen street, Qingpu District, Shanghai. Applicant after: SHANGHAI CIVIL DEFENSE ARCHITECTURAL DESIGN & RESEARCH INSTITUTE CO.,LTD. Address before: 200032 room 1302, 1223 Tu Tu Road, Xuhui District, Shanghai. Applicant before: SHANGHAI CIVIL DEFENSE ARCHITECTURAL DESIGN & RESEARCH INSTITUTE CO.,LTD. |
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