CN115217402B - Wind pressure resistant two-way escape door - Google Patents
Wind pressure resistant two-way escape door Download PDFInfo
- Publication number
- CN115217402B CN115217402B CN202210909147.7A CN202210909147A CN115217402B CN 115217402 B CN115217402 B CN 115217402B CN 202210909147 A CN202210909147 A CN 202210909147A CN 115217402 B CN115217402 B CN 115217402B
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- door
- door leaf
- wall
- fixedly connected
- wind pressure
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- 238000005422 blasting Methods 0.000 claims description 11
- 239000002360 explosive Substances 0.000 claims description 11
- 238000010304 firing Methods 0.000 claims description 9
- 230000001960 triggered effect Effects 0.000 claims description 5
- 238000004880 explosion Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims 1
- 230000002457 bidirectional effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000005465 channeling Effects 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical group N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- 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
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D3/00—Hinges with pins
-
- 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
- E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
- E06B3/34—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement
- E06B3/36—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement with a single vertical axis of rotation at one side of the opening, or swinging through the opening
- E06B3/362—Double winged doors or windows
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Special Wing (AREA)
Abstract
The invention relates to the technical field of escape doors, and particularly discloses a wind pressure resistant two-way escape door which comprises a door frame, wherein a first door leaf and a second door leaf are respectively hinged to the left side wall and the right side wall of the door frame, the center of the door frame is vertically and detachably connected with a stand column, a first positioning groove for being matched with the first door leaf is formed in the left side of the stand column, and a second positioning groove for being matched with the second door leaf is formed in the right side of the stand column. The invention aims to provide a wind pressure resistant bidirectional escape door so as to solve the technical problem of small opening space of a fireproof door.
Description
Technical Field
The invention relates to the technical field of escape doors, and particularly discloses a wind pressure resistant bidirectional escape door.
Background
Escape doors are also called emergency evacuation doors, emergency channels, emergency exit doors and the like, are most common in public places, residential buildings and high-rise buildings, are also the necessary equipment firefighting measures specified in the plain text of China, and although the types of escape door systems are numerous, the escape door systems still cannot meet the demands of users. When emergency such as fire, toxic gas, explosion and the like occurs in one tunnel, people can enter another relatively safe tunnel from the tunnel with the accident by opening the escape door, and the escape door can close the communication channel after being closed to stop fire channeling, smoke channeling and toxic gas.
For example, chinese patent invention discloses an escape door, wherein a front plate and a rear plate inside a door frame are connected to the door frame by a hinge, an upper plate and a lower plate are connected to the front plate by a hinge in an equilateral triangle shape, a side plate is connected to the rear plate by a hinge, an openable escape door is provided in the middle of the rear plate, a cat eye is provided on the door to penetrate the escape door, the side plate and the front plate, a common door handle is mounted on the rear plate to open the front plate and the door frame, an escape door handle is mounted on the escape door to open the escape door and the rear plate.
However, the existing escape door can be opened only in one direction, and it is difficult to realize that two tunnels at two sides of the escape door are escape tunnels when an emergency occurs. Therefore, how to realize the two-way opening of the escape door is a technical problem that needs to be solved by the person skilled in the art.
Disclosure of Invention
The invention aims to provide a wind pressure resistant bidirectional escape door so as to solve the technical problem of small opening space of a fireproof door.
In order to achieve the above purpose, the basic scheme of the invention is as follows: the wind pressure resistant bidirectional escape door comprises a door frame, wherein the left side wall and the right side wall of the door frame are respectively hinged with a first door leaf and a second door leaf, the center of the door frame is vertically and detachably connected with a stand column, the left side of the stand column is provided with a first positioning groove matched with the first door leaf, and the right side of the stand column is provided with a second positioning groove matched with the second door leaf.
The working principle and the beneficial effects of the basic scheme are as follows: the technical scheme utilizes the door frame as the supporting and bearing function of the escape door so as to realize the technical effect that the first door leaf and the second door leaf open or close the escape door through relative rotation. According to the technical scheme, the two opposite door leaves are utilized to realize the technical effect of two-way escape on the basis that the escape door has effective fireproof and flame-retardant functions, so that the two opposite door leaves are effectively convenient for the interaction of the inner side and the outer side of the escape door to escape. According to the technical scheme, the middle upright post with the detachable structure is utilized, so that the passing area is conveniently enlarged in the emergency escape process, and the safety escape efficiency is effectively improved.
Compared with the escape door in the prior art, the escape door in the technical scheme not only can realize a two-way escape function by utilizing the first door leaf and the second door leaf, but also greatly improves the space of an escape channel. And the middle upright post with a detachable structure can be used for further expanding escape space in emergency, so that the safety evacuation efficiency is effectively improved.
Further, the side wall of the door frame is fixedly connected with hinges at the top end, the top end and the side wall respectively, and one end, far away from the door frame, of the hinges is fixedly connected with the first door leaf or the second door leaf.
The beneficial effects are that: according to the technical scheme, the hinges are additionally arranged at three different positions on the side wall of the door frame respectively, so that the success rate of the door leaf relative to the door frame is ensured, the condition that the door leaf cannot be opened due to damage of a single hinge is avoided, and the safety of the door leaf rotation is effectively improved.
Further, the upright post is fixedly connected with the door frame through threads.
The beneficial effects are that: according to the technical scheme, the vertical column is detachably connected in a threaded connection mode, and the threaded connection has the technical advantages of simplicity and convenience in disassembly and firmness in fixation.
Further, the first door leaf and the outer wall of the second door leaf are horizontally and slidably connected with plugs, and the side wall of the upright post is fixedly connected with a socket matched with the plugs.
The beneficial effects are that: according to the technical scheme, the plug is additionally arranged between the door leaf and the upright post, so that the second door leaf can be opened or closed in a plug-in mode.
Further, the rotation direction of the first door leaf and the upright post is opposite to the rotation direction of the second door leaf and the upright post.
The beneficial effects are that: according to the technical scheme, through the rotating direction between the first door leaf and the second door leaf, the door leaf with at least one direction can be normally rotated and opened when an emergency situation is met, and the escape probability of the escape door is effectively improved.
Further, the first door leaf and the outer wall of the second door leaf are fixedly connected with a push rod lock, and the side wall of the upright post is provided with a lock hole matched with the push rod lock.
The beneficial effects are that: according to the technical scheme, the push rod lock is additionally arranged between the door leaf and the upright post, so that the door leaf can be further opened or closed in a push rod lock mode.
Further, the door frame outer wall is fixed with the support respectively in the level opposite both sides, the pin joint is fixed with the anti-skidding chain on the support, the one end pin joint that the anti-skidding chain kept away from the support is fixed in first door leaf outer wall or second door leaf outer wall.
The beneficial effects are that: according to the technical scheme, the anti-skid chain is additionally arranged between the door frame and the first door leaf so as to conveniently achieve the guiding effect in the rotation process of the door leaf and improve the rotation effect of the door leaf.
Further, the inside of each of the first door leaf and the second door leaf is filled with an inorganic fireproof core plate.
Further, the inner walls of the first positioning groove and the second positioning groove are fixedly connected with flexible buffer cushions.
Drawings
FIG. 1 is a front view of a wind pressure resistant bi-directional escape door according to a first embodiment of the present invention;
FIG. 2 is a top sectional view of a wind pressure resistant bi-directional escape door according to a first embodiment of the present invention;
FIG. 3 is an enlarged schematic view of a portion of FIG. 2;
FIG. 4 is a schematic view showing a top view of a wind pressure resistant two-way escape door according to the second embodiment;
Fig. 5 is a partially enlarged schematic view at B in fig. 4.
Detailed Description
The following is a further detailed description of the embodiments:
Reference numerals in the drawings of the specification include: door frame 1, first door leaf 2, second door leaf 3, stand 4, first constant head tank 5, second constant head tank 6, blotter 7, hinge 8, plug 9, push rod lock 10, non-slip chain 11, first trigger lever 12, first slide 13, second trigger lever 14, second slide 15, first pressure spring 16, extension spring 17, bumper 18, slide rail 19, wedge 20, wedge groove 21, firing pin 22, delay device 23, blasting explosive 24.
Example 1
Substantially as shown in figure 1: the utility model provides a two-way emergency exit of anti wind pressure, includes door frame 1, and the left and right sides wall of door frame 1 articulates respectively has first door leaf 2 and second door leaf 3, and the center of door frame 1 is vertical to be connected with stand 4 through threaded connection's mode can be dismantled, and open in the left side of stand 4 has be used for with first door leaf 2 complex first constant head tank 5, open on the right side of stand 4 has be used for with second door leaf 3 complex second constant head tank 6. The inner walls of the first positioning groove 5 and the second positioning groove 6 are fixedly connected with a buffer cushion 7 made of rubber. The side wall of the door frame 1 is fixedly connected with a hinge 8 at the top end, the top end and the side wall respectively, and one end, far away from the door frame 1, of the hinge 8 is fixedly connected with the first door leaf 2 or the second door leaf 3. The rotation direction of the first door leaf 2 and the upright post 4 is opposite to the rotation direction of the second door leaf 3 and the upright post 4. The inside of the first door leaf 2 and the inside of the second door leaf 3 are filled with inorganic fireproof core plates.
The outer walls of the first door leaf 2 and the second door leaf 3 are horizontally and slidably connected with plugs 9, and the side walls of the upright posts 4 are fixedly connected with sockets matched with the plugs 9. The outer walls of the first door leaf 2 and the second door leaf 3 are fixedly connected with a push rod lock 10, and the side wall of the upright post 4 is provided with a lock hole matched with the push rod lock 10. The outer wall of the door frame 1 is respectively fixed with a support at two opposite sides horizontally, an anti-skid chain 11 is fixedly connected on the support in a pin joint mode, and one end, far away from the support, of the anti-skid chain 11 is fixedly connected on the outer wall of the first door leaf 2 or the outer wall of the second door leaf 3 in a pin joint mode.
The specific implementation mode is as follows: in the normal state of use, the operator can realize opening or closing of first door leaf 2 or second door leaf 3 through the bolt cooperation between plug 9 and stand 4 and push rod lock 10. When an operator needs to rotate the first door leaf 2 or the second door leaf 3, the operator only needs to open the push rod lock 10 and the plug 9 and push the first door leaf 2 or the second door leaf 3. In the pushing process, the first door leaf 2 or the second door leaf 3 rotates relatively to the door frame 1, so that the opening function is realized.
When emergency needs to escape, an operator can rotate the upright post 4 circumferentially to separate the upright post 4 in threaded connection from the door frame 1, so that the passing area can be enlarged in the emergency escape process, and the safety escape efficiency is effectively improved.
Example two
The difference between this embodiment and the first embodiment is that, as shown in fig. 4 and fig. 5, the upright 4 is provided with a first slideway 13 and a second slideway 15 on the side walls near the first door leaf 2 and the second door leaf 3, respectively. The first slide 13 and the second slide 15 are parallel to the horizontal plane and are parallel to each other. The first slide way 13 and the second slide way 15 are both of blind hole structures, the first slide way 13 is internally and horizontally connected with a first trigger rod 12, and the second slide way 15 is internally and slidably connected with a second trigger rod 14. A first pressure spring 16 is fixedly connected between the end part of the first trigger rod 12 and the inner wall of the first slideway 13, and the central axis of the first pressure spring 16 is parallel to the sliding direction of the first trigger rod 12. A tension spring 17 is fixedly connected between the end part of the second trigger rod 14 and the inner wall of the second slideway 15, and the central axis of the second compression spring 17 is parallel to the sliding direction of the second trigger rod 14.
The side wall of the first trigger rod 12 is provided with a groove, a wedge block 20 is connected in the groove in a sliding manner, the sliding direction of the wedge block 20 is perpendicular to the central axis of the first trigger rod 12, a second pressure spring is fixedly connected between the wedge block 20 and the groove, and the central axis of the second pressure spring is parallel to the sliding direction of the wedge block 20. The inner wall of the first slideway 13 is provided with a wedge-shaped groove 21 which is matched with the wedge 20 in structure. One side of the adjacent wedge-shaped groove 21 is provided with a sliding rail 19, one side of the sliding rail 19 close to the second sliding rail 15 is communicated with the outside, and the right end of the sliding rail 19 is communicated with the wedge surface of the wedge-shaped groove 21.
The side of the second slideway 15, which is close to the first slideway 13, is open, a safety rod 18 is welded and fixed on the side of the second triggering rod 14, which is close to the first slideway 13, and the end part of the safety rod 18 is in sliding connection in a sliding rail 19 along the sliding rail 19. In the free state of the first compression spring 16, the wedge 20 is located to the left of the wedge groove 21. When the second compression spring is in a free state, the trigger lever is positioned on the left side inside the slide rail 19.
The side wall of the first triggering rod 12 is also fixedly connected with a firing pin 22, the side wall of the first slide way 13 is fixedly connected with a delay fuze matched with the firing pin 22, the other end of the delay fuze is connected with a blasting explosive 24, and the blasting explosive 24 is respectively fixed at the top end and the bottom end of the inner wall of the upright post 4. The time delay fuze can cause the blasting explosive 24 to explode 15s after being triggered by the firing pin 22, and the explosion of the blasting explosive 24 can cause the column 4 to break at the location. The striker 22 can only trigger the time delay fuse when the first compression spring 16 is in the extreme retracted position.
The specific implementation process is as follows: when emergency needs to escape, the upright post 4 cannot be rotated and removed due to external deformation (such as bending) and other conditions. The operator may first push the first trigger lever 12 to slide. The front wedge 20 sliding on the first trigger rod 12 makes the second compression spring in a contracted state under the action of the inner wall of the first slideway 13. The first trigger lever 12 then starts to slide to the right, the wedge 20 first passes and falls into the wedge groove 21 under the extending action of the second compression spring. After the wedge 20 enters the wedge groove 21, the first trigger rod 12 cannot slide to the right, so that the safety protection function is realized, and the false triggering during normal use is avoided. The operator then pulls the second trigger lever 14, and the second trigger lever 14 moves horizontally to the right under the pulling action. During the movement of the second trigger lever 14, the top end of the safety lever 18 also moves rightward in the sliding rail 19, and the trigger lever moves rightward through the connection between the sliding rail 19 and the wedge groove 21, and as the movement continues, the safety lever 18 abuts against the inclined surface of the wedge 20, and the extrusion force along the wedge surface can cause the wedge 20 to retract upward until the wedge 20 is completely separated from the wedge groove 21. After disengagement, the first trigger lever 12 continues to move to the right until the first compression spring 16 is in the limit retraction. After the first pressure spring 16 is at the limit contraction position, the firing pin 22 impacts and triggers the delay fuze, after the delay fuze is triggered, the blasting explosive 24 is triggered after 15 seconds of waiting, the blasting explosive 24 at the upper end and the lower end of the upright post 4 is blasted simultaneously, so that the two ends of the upright post 4 are broken, and the technical effect that the upright post 4 is separated from the escape door is finally realized.
The foregoing is merely exemplary embodiments of the present application, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present application, and these should also be considered as the scope of the present application, which does not affect the effect of the implementation of the present application and the utility of the patent. The protection scope of the present application is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (9)
1. Wind pressure resistant two-way escape door, its characterized in that: the door comprises a door frame, wherein a first door leaf and a second door leaf are respectively hinged to the left side wall and the right side wall of the door frame, a stand column is vertically and detachably connected to the center of the door frame, a first positioning groove for being matched with the first door leaf is formed in the left side of the stand column, and a second positioning groove for being matched with the second door leaf is formed in the right side of the stand column;
The upright posts are respectively provided with a first slide way and a second slide way on the side walls close to the first door leaf and the second door leaf, the first slide way and the second slide way are parallel to the horizontal plane and are parallel to each other, the first slide way and the second slide way are of blind hole structures, a first trigger rod is horizontally and dynamically connected in the first slide way, a second trigger rod is slidably connected in the second slide way, a first pressure spring is fixedly connected between the end part of the first trigger rod and the inner wall of the first slide way, the central shaft of the first pressure spring is parallel to the sliding direction of the first trigger rod, a tension spring is fixedly connected between the end part of the second trigger rod and the inner wall of the second slide way, and the central shaft of the tension spring is parallel to the sliding direction of the second trigger rod;
The side wall of the first trigger rod is provided with a groove, a wedge block is connected in the groove in a sliding manner, the sliding direction of the wedge block is perpendicular to the central axis of the first trigger rod, a second pressure spring is fixedly connected between the wedge block and the groove, and the central axis of the second pressure spring is parallel to the sliding direction of the wedge block; the inner wall of the first slideway is provided with wedge grooves matched with the wedge block structures, one side of each adjacent wedge groove is provided with a sliding rail, one side of the sliding rail, which is close to the second slideway, is communicated with the outside, and the right end of the sliding rail is communicated with the wedge surface of the wedge groove;
One side of the second slideway, which is close to the first slideway, is open, a safety rod is welded and fixed on one side of the second triggering rod, which is close to the first slideway, and the end part of the safety rod is in sliding connection in the sliding rail along the sliding rail; when the first pressure spring is in a free state, the wedge block is positioned at the left side of the wedge-shaped groove, and when the second pressure spring is in a free state, the trigger rod is positioned at the left side of the inside of the slide rail;
The side wall of the first triggering rod is fixedly connected with a firing pin, the side wall of the first slide way is fixedly connected with a delay fuze matched with the firing pin, the other end of the delay fuze is connected with blasting explosive, the blasting explosive is respectively fixed at the top end and the bottom end of the inner wall of the stand column, the delay fuze can enable the blasting explosive to explode after being triggered by the firing pin for 15 seconds, the position of the stand column can be broken due to the explosion of the blasting explosive, and the delay fuze can be triggered by the firing pin when the first pressure spring is positioned at the limit shrinkage position.
2. The wind pressure resistant bi-directional escape door of claim 1 wherein: the side wall of the door frame is fixedly connected with a hinge at the top end and the side wall respectively, and one end, far away from the door frame, of the hinge is fixedly connected with the first door leaf or the second door leaf.
3. The wind pressure resistant bi-directional escape door of claim 1 wherein: the upright post is fixedly connected with the door frame through threads.
4. The wind pressure resistant bi-directional escape door of claim 2 wherein: the first door leaf and the outer wall of the second door leaf are horizontally and slidably connected with plugs, and the side wall of the upright post is fixedly connected with a socket matched with the plugs.
5. A wind pressure resistant bi-directional escape door according to claim 3 wherein: the rotation direction of the first door leaf and the upright post is opposite to that of the second door leaf and the upright post.
6. The wind pressure resistant bi-directional escape door of claim 1 wherein: the first door leaf and second door leaf outer wall still fixedly connected with push rod lock, stand lateral wall offer with push rod lock complex lockhole.
7. The wind pressure resistant bi-directional escape door of claim 6 wherein: the door frame outer wall is fixed with the support respectively in the level opposite both sides, the pin joint is fixed with the anti-skidding chain on the support, the one end pin joint that the anti-skidding chain kept away from the support is fixed in first door leaf outer wall or second door leaf outer wall.
8. The wind pressure resistant bi-directional escape door of claim 1 wherein: the inside of first door leaf and second door leaf all is filled with inorganic fire prevention core.
9. The wind pressure resistant bi-directional escape door of claim 1 wherein: the inner walls of the first positioning groove and the second positioning groove are fixedly connected with flexible buffer cushions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210909147.7A CN115217402B (en) | 2022-07-29 | 2022-07-29 | Wind pressure resistant two-way escape door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210909147.7A CN115217402B (en) | 2022-07-29 | 2022-07-29 | Wind pressure resistant two-way escape door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115217402A CN115217402A (en) | 2022-10-21 |
| CN115217402B true CN115217402B (en) | 2024-04-26 |
Family
ID=83613354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210909147.7A Active CN115217402B (en) | 2022-07-29 | 2022-07-29 | Wind pressure resistant two-way escape door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115217402B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203050437U (en) * | 2012-12-28 | 2013-07-10 | 上海申华声学装备有限公司 | Access door capable of being opened and closed in double directions |
| CN106740640A (en) * | 2017-02-24 | 2017-05-31 | 常熟共益信息科技有限公司 | Active vehicle window destroyer |
| CN109209187A (en) * | 2017-07-05 | 2019-01-15 | 中铁第六勘察设计院集团有限公司 | A kind of Subway Tunnel service channel double damping fire resistant doorsets |
| TWM581628U (en) * | 2019-04-09 | 2019-08-01 | 李四川 | S-shaped opening double-leaf fireproof door structure |
| CN111336878A (en) * | 2020-04-28 | 2020-06-26 | 安徽企路石工程技术开发有限公司 | System for laying blasting explosive on tunnel face |
| CN212054812U (en) * | 2020-05-15 | 2020-12-01 | 上海道生门业有限公司 | Fire door is prevented to contact passageway between normally open city subway tunnel |
| CN213391669U (en) * | 2020-08-21 | 2021-06-08 | 北京华诺盛达消防设备有限公司 | Hinge and wind pressure resistant fireproof escape door for interval tunnel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2551129A (en) * | 2016-06-06 | 2017-12-13 | Hodgson Sayers Ltd | A security door assembly |
-
2022
- 2022-07-29 CN CN202210909147.7A patent/CN115217402B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203050437U (en) * | 2012-12-28 | 2013-07-10 | 上海申华声学装备有限公司 | Access door capable of being opened and closed in double directions |
| CN106740640A (en) * | 2017-02-24 | 2017-05-31 | 常熟共益信息科技有限公司 | Active vehicle window destroyer |
| CN109209187A (en) * | 2017-07-05 | 2019-01-15 | 中铁第六勘察设计院集团有限公司 | A kind of Subway Tunnel service channel double damping fire resistant doorsets |
| TWM581628U (en) * | 2019-04-09 | 2019-08-01 | 李四川 | S-shaped opening double-leaf fireproof door structure |
| CN111336878A (en) * | 2020-04-28 | 2020-06-26 | 安徽企路石工程技术开发有限公司 | System for laying blasting explosive on tunnel face |
| CN212054812U (en) * | 2020-05-15 | 2020-12-01 | 上海道生门业有限公司 | Fire door is prevented to contact passageway between normally open city subway tunnel |
| CN213391669U (en) * | 2020-08-21 | 2021-06-08 | 北京华诺盛达消防设备有限公司 | Hinge and wind pressure resistant fireproof escape door for interval tunnel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115217402A (en) | 2022-10-21 |
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