CN103277027A - High-strength steel fiber concrete protection air-tight door - Google Patents
High-strength steel fiber concrete protection air-tight door Download PDFInfo
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- CN103277027A CN103277027A CN2013102047506A CN201310204750A CN103277027A CN 103277027 A CN103277027 A CN 103277027A CN 2013102047506 A CN2013102047506 A CN 2013102047506A CN 201310204750 A CN201310204750 A CN 201310204750A CN 103277027 A CN103277027 A CN 103277027A
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Abstract
A high-strength steel fiber concrete protection air-tight door comprises a door leaf, a door frame, locks and hinges. The door leaf is of a high-strength steel fiber concrete beam-slab structure, the locks comprise a worm reducer which is fixedly connected to the middle position of the door leaf and provided with output ends at the upper end and the lower end, a hand wheel connected to the input end of the worm reducer, upper lead screws, upper locking heads, upper locking head connection supports, lower lead screws, lower lock heads, lower locking head connection supports, left locking heads, left locking head connection supports, right locking heads and right locking head connection supports, wherein the upper lead screws, the upper locking heads and the upper locking head connection supports are arranged above the worm reducer, the lower lead screws, the lower locking heads and the lower locking head connection supports are arranged below the worm reducer, the left locking heads and the left locking head connection supports are arranged on the left side of the worm reducer, and the right locking heads and right locking head connection supports are arranged on the right side of the worm reducer. The high-strength steel fiber concrete protection air-tight door has the advantages of being high in strength, low in weight, high-temperature resistant, good in electric insulation performance and heat insulation performance, vibration-shock resistant, easy to machine and install, convenient to use and maintain, low in maintenance cost, and suitable for being used in underground protection engineering and road (railway) tunnel staff communication channels.
Description
Technical field
The present invention relates to a kind of airtight blast door that is applicable to underground protective engineering or public affairs (iron) tunnel, road personnel UNICOM road.
Background technology
Airtight blast door (or sealed door) volume in the existing preventive works is big, quality is heavy, be easy to damage, the maintenance cost height, bring inconvenience can for use and management at ordinary times, simultaneously, in the environment of preventive works cool place, humidity, ventilation condition difference, be corroded easily, so can influence the use of preventive works.
Summary of the invention
The purpose of this invention is to provide a kind of high strength steel fiber reinforced concrete airtight blast door, solve the technical problem that the airtight blast door quality is heavy, fragile, perishable, maintenance cost is high, maintenance management is inconvenient in existing underground protective engineering or public affairs (iron) tunnel, the road personnel UNICOM road.
For achieving the above object, the present invention adopts following technical scheme: a kind of high strength steel fiber reinforced concrete airtight blast door, formed by the seal between door leaf, doorframe, locking, hinge page or leaf and door leaf and the doorframe, described doorframe is made up of upper door frame, lower door frame and both sides doorframe, it is characterized in that: described door leaf is the high strength steel fiber reinforced concrete beam and slab structure, comprises building the high strength steel fiber reinforced concrete beam slab that forms and the door leaf channel-section steel skeleton that wraps on high strength steel fiber reinforced concrete beam slab four limits.
Described locking includes and is fixedly connected on the door leaf centre position, and upper and lower side is equipped with the worm reducer of output, be connected the handwheel on the input of worm reducer, be arranged on the last leading screw of worm reducer top, last tapered end and last tapered end link, be arranged on the following leading screw of worm reducer below, lower lock head and lower lock head link, be arranged on left tapered end and the left tapered end link in worm reducer left side, and the right tapered end and the right tapered end link that are arranged on the worm reducer right side, the described tapered end of going up, lower lock head, all be with the tapered end guide holder on left side tapered end and the right tapered end, and the tapered end guide holder is fixedly connected on the door leaf.
The described leading screw of going up is connected on the door leaf by upper bearing (metal) and bearing support, the lower end of last leading screw is connected with the output of worm reducer, a upper limit ring is fixedly arranged at the top of last leading screw, the last leading screw of upper limit ring below is provided with one and goes up the ears nut, described go up the tapered end link by cross tube and be connected cross tube with last ears nut between two go up diagonal control arms and form, described on the tapered end fixed interval be connected on the cross tube.
Described leading screw down is connected on the door leaf by lower bearing and bearing support, the upper end of following leading screw is connected with the output of worm reducer, a lower limit ring is fixedly arranged at the bottom of following leading screw, the following leading screw of lower limit ring top is provided with a following ears nut, described lower lock head link by sheer pole and be connected sheer pole and following ears nut between two declivity connecting rods form, described lower lock head fixed interval is connected on the sheer pole.
Described left tapered end link is made up of upper left transverse link, lower-left transverse link and left vertical link, wherein the right-hand member of upper left transverse link is articulated and connected on last ears nut, the right-hand member of lower-left transverse link is articulated and connected on following ears nut, the upper end of left side vertical link is articulated and connected at the left end of upper left transverse link, the lower end of left side vertical link is articulated and connected at the left end of lower-left transverse link, and described left tapered end fixed interval is connected on the left vertical link.
Described right tapered end link is made up of upper right transverse link, bottom right transverse link and right vertical link, wherein the left end of upper right transverse link is articulated and connected on last ears nut, the left end of bottom right transverse link is articulated and connected on following ears nut, the upper end of right vertical link is articulated and connected at the right-hand member of upper right transverse link, the lower end of right vertical link is articulated and connected at the right-hand member of bottom right transverse link, and described right tapered end fixed interval is connected on the right vertical link.
Described going up on leading screw and the following leading screw all can be with the leading screw guide holder, and the leading screw guide holder is fixedly connected on the door leaf.
Described hinge page or leaf can comprise that the doorframe free bearing that is fixedly connected on the doorframe, the door leaf that is fixedly connected on the door leaf cut with scissors ear and doorframe free bearing and door leaf are cut with scissors the hinge page or leaf axle that ear is hingedly connected together.
The described tapered end space set of going up has three, and the lower lock head space set has three, and left tapered end space set has three, and right tapered end space set has three.
Described worm reducer can be fixedly connected on the door leaf by latch receptacles.
Described upper door frame, lower door frame and both sides doorframe all can be welded by two angle steel, and also are welded with the lock box that inserts for locking head on the angle steel, have the lockhole that inserts for locking head on the angle steel.
Compared with prior art the present invention has following characteristics and beneficial effect: the present invention have intensity height, in light weight, high temperature resistant, electric insulation and thermal insulation properties good, be not afraid of that vibratory impulse, processing are installed easily, working service is convenient, characteristic of low maintenance cost, reach the required intensity of airtight blast door, rigidity, anticorrosion and airtight requirement fully, be applicable to underground protective engineering and public affairs (iron) tunnel, road personnel UNICOM road.
Door leaf of the present invention is whole high strength steel fiber reinforced concrete structure, the main material of steel fibrous concrete is that high-strength end in a row colludes steel fibre, that high strength steel fiber reinforced concrete has is in light weight, intensity is high, characteristics such as high temperature resistant, and be not afraid of vibratory impulse, processing is installed easily, working service is convenient, so can make airtight blast door reach required intensity, rigidity, anticorrosion and airtight requirement.In addition, owing to adopted the door leaf of whole high strength steel fiber reinforced concrete structure, the present invention has had good air tightness, anti-flammability and ornamental, and the life-span also increases to some extent.
The present invention has replaced the airtight blast door of traditional steel bar concrete material, is installed in the place, access of preventive works, can realize protection and airtight requirement, has improved the integral level of engineering protection effectively.
The present invention has also designed a kind of novel locking, this locking is custom-designed for the door leaf that cooperates whole high strength steel fiber reinforced concrete structure, can firm being locked on the doorframe with the door leaf of whole high strength steel fiber reinforced concrete structure, and guarantee the sealing of door leaf and doorframe.This locking biggest advantage is, compares with other locking, can make the door leaf doorframe of better fitting, and especially has the characteristics of anti-bounce-back.
In addition, the both sides of existing door leaf are all stressed, and the present invention has characteristics, and that is exactly that the side does not stress around the door leaf, so the existing relatively door leaf of the present invention has had tangible difference and progress when shock wave load action during in door leaf.
Description of drawings
The present invention will be further described in detail below in conjunction with accompanying drawing.
Fig. 1 is structural representation of the present invention.
Fig. 2 is the schematic diagram of A-A section among Fig. 1.
Fig. 3 is the schematic diagram of B-B section among Fig. 1.
Fig. 4 is the structural representation of locking.
Fig. 5 is the schematic diagram of C-C section among Fig. 4.
Fig. 6 is the schematic diagram of D-D section among Fig. 4.
Fig. 7 is the structural representation of hinge page or leaf.
Fig. 8 is the schematic diagram of E-E section among Fig. 7.
Reference numeral: 1-door leaf, 1.1-high strength steel fiber reinforced concrete beam slab, 1.2-door leaf channel-section steel skeleton; 2-doorframe, 2.1-angle steel, 2.2-lock box; The 3-seal; The 4-locking, 4.1-worm reducer, 4.2-handwheel, 4.3-last leading screw, 4.4-last tapered end, 4.5-following leading screw, 4.6-lower lock head, 4.7-left tapered end, 4.8-right tapered end, 4.9-tapered end guide holder, 4.10-leading screw guide holder, 4.11-cross tube, 4.12-last diagonal control arm, 4.13-upper bearing (metal) and bearing support, 4.14-lower bearing and bearing support, 4.15-sheer pole, 4.16-following diagonal control arm, 4.17-upper limit ring, 4.18-last ears nut, 4.19-lower limit ring, 4.20-following ears nut, 4.21-upper left transverse link, 4.22-lower-left transverse link, 4.23-left vertical link, 4.24-upper right transverse link, 4.25-bottom right transverse link, 4.26-right vertical link, 4.27-latch receptacles; 5-hinge page or leaf, 5.1-doorframe free bearing, 5.2-door leaf hinge ear, 5.3-hinge page or leaf axle.
The specific embodiment
Embodiment is referring to shown in Fig. 1-3, this high strength steel fiber reinforced concrete airtight blast door, for vertical rotary type opens and closes, to be formed by the seal 3 between door leaf 1, doorframe 2, locking 4, hinge page or leaf 5 and door leaf 1 and the doorframe 2, described doorframe 2 is made up of upper door frame, lower door frame and both sides doorframe.
Described seal 3 is by at least one pair of fixing bearing plate of a side setting of doorframe 2 with inlay the sealing joint strip that is fixed in the seal groove that bearing plate and doorframe surround and form, and during close-lock, door leaf compression seal adhesive tape is implemented airtight.In the present embodiment, sealing joint strip is solid high elastic rubber weather strip, and its function mainly plays the isolated poison gas effect of sealing.
Described door leaf 1 is the high strength steel fiber reinforced concrete beam and slab structure, comprise and build the high strength steel fiber reinforced concrete beam slab 1.1 that forms and the door leaf channel-section steel skeleton 1.2 that wraps on high strength steel fiber reinforced concrete beam slab 1.1 4 limits, also be embedded with the built-in fitting that connects locking and hinge page or leaf usefulness in the high strength steel fiber reinforced concrete beam slab.Described door leaf channel-section steel skeleton 1.2 is shaped steel assembly welding frame construction.Can form the integral body of sealing fully by door leaf channel-section steel skeleton bound edge and by the door leaf 1 that high strength steel fiber reinforced concrete is made, the seal of door leaf itself is guaranteed by the tightness of high strength steel fiber reinforced concrete material.
Described doorframe namely can require to be designed to steel bar concrete outsourcing angle steel structure according to environment for use, also can be as shown in this embodiment, be designed to the form that upper door frame, lower door frame and both sides doorframe are welded by two angle steel 2.1, and also be welded with the lock box 2.2 that inserts for locking head on the angle steel, also have the lockhole that inserts for locking head on the angle steel.
Referring to Fig. 4-6, described locking 4 includes and is fixedly connected on the door leaf centre position, and upper and lower side is equipped with the worm reducer 4.1 of output, be connected the handwheel 4.2 on the worm reducer input, be arranged on the last leading screw 4.3 of worm reducer top, last tapered end 4.4 and last tapered end link, be arranged on the following leading screw 4.5 of worm reducer below, lower lock head 4.6 and lower lock head link, be arranged on left tapered end 4.7 and the left tapered end link in worm reducer left side, and the right tapered end 4.8 and the right tapered end link that are arranged on the worm reducer right side, the described tapered end 4.4 of going up, lower lock head 4.6, all be with tapered end guide holder 4.9 on left side tapered end 4.7 and the right tapered end 4.8, and tapered end guide holder 4.9 is fixedly connected on the door leaf 1.The contact gap of the power shaft of described handwheel and locking is with rubber seal.
In the present embodiment, last tapered end 4.4 is arranged at intervals with three, and lower lock head 4.6 is arranged at intervals with three, and left tapered end 4.7 is arranged at intervals with three, and right tapered end 4.8 is arranged at intervals with three, and described worm reducer 4.1 is fixedly connected on the door leaf by latch receptacles 4.27.
The described leading screw 4.3 of going up is connected on the door leaf by upper bearing (metal) and bearing support 4.13, the lower end of last leading screw 4.3 is connected with the output of worm reducer 4.1, a upper limit ring 4.17 is fixedly arranged at the top of last leading screw 4.3, the last leading screw 4.3 of upper limit ring 4.17 belows is provided with one and goes up ears nut 4.18, described go up the tapered end link by cross tube 4.11 and be connected cross tube with last ears nut between two go up diagonal control arms 4.12 and form, described on tapered end 4.4 fixed interval be connected on the cross tube 4.11.
Described leading screw 4.5 down is connected on the door leaf by lower bearing and bearing support 4.14, the upper end of following leading screw 4.5 is connected with the output of worm reducer 4.1, a lower limit ring 4.19 is fixedly arranged at the bottom of following leading screw 4.5, the following leading screw 4.5 of lower limit ring 4.19 tops is provided with a following ears nut 4.20, described lower lock head link by sheer pole 4.15 and be connected sheer pole and following ears nut between two following diagonal control arms 4.16 form, described lower lock head 4.6 fixed interval are connected on the sheer pole 4.15.
Described going up on leading screw 4.3 and the following leading screw 4.5 also all is with leading screw guide holder 4.10, and leading screw guide holder 4.10 is fixedly connected on the door leaf 1.
Described left tapered end link is made up of upper left transverse link 4.21, lower-left transverse link 4.22 and left vertical link 4.23, wherein the right-hand member of upper left transverse link 4.21 is articulated and connected on last ears nut 4.18, the right-hand member of lower-left transverse link 4.22 is articulated and connected on following ears nut 4.20, the upper end of left side vertical link 4.23 is articulated and connected at the left end of upper left transverse link 4.21, the lower end of left side vertical link 4.23 is articulated and connected at the left end of lower-left transverse link 4.22, and described left tapered end 4.7 fixed interval are connected on the left vertical link 4.19.
Described right tapered end link is made up of upper right transverse link 4.24, bottom right transverse link 4.25 and right vertical link 4.26, wherein the left end of upper right transverse link 4.24 is articulated and connected on last ears nut 4.18, the left end of bottom right transverse link 4.25 is articulated and connected on following ears nut 4.20, the upper end of right vertical link 4.26 is articulated and connected at the right-hand member of upper right transverse link 4.24, the lower end of right vertical link 4.26 is articulated and connected at the right-hand member of bottom right transverse link 4.25, and described right tapered end 4.8 fixed interval are connected on the right vertical link 4.26.
The present invention contacts door leaf by locking with doorframe, and reaches airtight function.When locking is used, by handwheel 4.2 operation control reducer of turbodrill 4.1, drive upward leading screw 4.3, leading screw 4.5 rotations down by reducer of turbodrill, last leading screw 4.3, down leading screw 4.5 drives ears nut 4.18 again and following ears nut 4.20 moves up and down, last ears nut 4.18 and following ears nut 4.20 drive tapered end link, lower lock head link, left tapered end link and the motion of right tapered end link again, thereby all tapered ends are moved together.Handwheel 4.2 clockwise rotates, and can drive tapered end and slide to lockhole on the doorframe.
Referring to Fig. 7, Fig. 8, described hinge page or leaf 5 is connected door leaf 1 with doorframe 2, rotates in fixed axis during door leaf 1 switch, then does translational motion during compression seal bar 3.Hinge page or leaf 5 comprises the doorframe free bearing 5.1 that is fixedly connected on the doorframe, the hinge page or leaf axle 5.3 that is fixedly connected on the door leaf hinge ear 5.2 on the door leaf and doorframe free bearing 5.1 and door leaf hinge ear 5.2 are hingedly connected together.In the present embodiment, doorframe free bearing 5.1 is connected with doorframe 2 by hex bolts, and door leaf hinge ear 5.2 is connected with door leaf 1 by connecting bolt.In the present embodiment, hinge page or leaf 5 is designed to single hinge hinge page or leaf, and be provided with two single hinge hinge pages or leaves up and down, the hinge page or leaf axle of wherein going up in the single hinge hinge page or leaf 5.3 is connected with cottor pin in the end, hinge axis hole is elliptical aperture, hinge page or leaf axle 5.3 in the hinge that the places an order hinge page or leaf is being fixed by hex nut in the end, is provided with thrust bearing and bearing washer in the door leaf hinge ear 5.2 in the hinge that the places an order hinge page or leaf.
The course of work of the present invention: 1, be converted to wartime (action of closing the door) at ordinary times, door leaf is pushed the state of closing the door, operate handwheel then and make locking head enter obturator hernia, make door leaf compression seal bar, and fixing door leaf, realize protection and airtight function; 2, the process of opening the door is opposite with the action of closing the door, and operates handwheel, makes the tapered end of locking withdraw from lockhole, places out final position to put door leaf, and fixing door leaf.
Claims (6)
1. high strength steel fiber reinforced concrete airtight blast door, formed by the seal (3) between door leaf (1), doorframe (2), locking (4), hinge page or leaf (5) and door leaf and the doorframe, described doorframe (2) is made up of upper door frame, lower door frame and both sides doorframe, it is characterized in that: described door leaf (1) is for the high strength steel fiber reinforced concrete beam and slab structure, comprises building the high strength steel fiber reinforced concrete beam slab (1.1) that forms and wrapping in door leaf channel-section steel skeleton (1.2) on high strength steel fiber reinforced concrete beam slab (1.1) four limits;
Described locking (4) includes and is fixedly connected on the door leaf centre position, and upper and lower side is equipped with the worm reducer (4.1) of output, be connected the handwheel (4.2) on the input of worm reducer, be arranged on the last leading screw (4.3) of worm reducer top, last tapered end (4.4) and last tapered end link, be arranged on the following leading screw (4.5) of worm reducer below, lower lock head (4.6) and lower lock head link, be arranged on left tapered end (4.7) and the left tapered end link in worm reducer left side, and the right tapered end (4.8) and the right tapered end link that are arranged on the worm reducer right side, the described tapered end (4.4) of going up, lower lock head (4.6), all be with tapered end guide holder (4.9) on left side tapered end (4.7) and the right tapered end (4.8), and tapered end guide holder (4.9) is fixedly connected on the door leaf (1);
The described leading screw (4.3) of going up is connected on the door leaf by upper bearing (metal) and bearing support (4.13), the lower end of last leading screw (4.3) is connected with the output of worm reducer (4.1), a upper limit ring (4.17) is fixedly arranged at the top of last leading screw (4.3), the last leading screw (4.3) of upper limit ring (4.17) below is provided with one and goes up ears nut (4.18), described go up the tapered end link by cross tube (4.11) and be connected cross tube with last ears nut between two go up diagonal control arms (4.12) and form, described on tapered end (4.4) fixed interval be connected on the cross tube (4.11);
Described leading screw (4.5) down is connected on the door leaf by lower bearing and bearing support (4.14), the upper end of following leading screw (4.5) is connected with the output of worm reducer (4.1), a lower limit ring (4.19) is fixedly arranged at the bottom of following leading screw (4.5), the following leading screw (4.5) of lower limit ring (4.19) top is provided with a following ears nut (4.20), described lower lock head link by sheer pole (4.15) and be connected sheer pole and following ears nut between two following diagonal control arms (4.16) form, described lower lock head (4.6) fixed interval is connected on the sheer pole (4.15);
Described left tapered end link is by upper left transverse link (4.21), lower-left transverse link (4.22) and left vertical link (4.23) are formed, wherein the right-hand member of upper left transverse link (4.21) is articulated and connected on last ears nut (4.18), the right-hand member of lower-left transverse link (4.22) is articulated and connected on following ears nut (4.20), the upper end of left side vertical link (4.23) is articulated and connected at the left end of upper left transverse link (4.21), the lower end of left side vertical link (4.23) is articulated and connected at the left end of lower-left transverse link (4.22), and described left tapered end (4.7) fixed interval is connected on the left vertical link (4.19);
Described right tapered end link is by upper right transverse link (4.24), bottom right transverse link (4.25) and right vertical link (4.26) are formed, wherein the left end of upper right transverse link (4.24) is articulated and connected on last ears nut (4.18), the left end of bottom right transverse link (4.25) is articulated and connected on following ears nut (4.20), the upper end of right vertical link (4.26) is articulated and connected at the right-hand member of upper right transverse link (4.24), the lower end of right vertical link (4.26) is articulated and connected at the right-hand member of bottom right transverse link (4.25), and described right tapered end (4.8) fixed interval is connected on the right vertical link (4.26).
2. high strength steel fiber reinforced concrete airtight blast door according to claim 1, it is characterized in that: described going up on leading screw (4.3) and the following leading screw (4.5) all is with leading screw guide holder (4.10), and leading screw guide holder (4.10) is fixedly connected on the door leaf (1).
3. high strength steel fiber reinforced concrete airtight blast door according to claim 1 is characterized in that: described hinge page or leaf comprises the doorframe free bearing (5.1) that is fixedly connected on the doorframe, the hinge page or leaf axle (5.3) that is fixedly connected on the door leaf hinge ear (5.2) on the door leaf and doorframe free bearing (5.1) and door leaf hinge ear (5.2) are hingedly connected together.
4. high strength steel fiber reinforced concrete airtight blast door according to claim 1, it is characterized in that: the described tapered end (4.4) of going up is arranged at intervals with three, lower lock head (4.6) is arranged at intervals with three, and left tapered end (4.7) is arranged at intervals with three, and right tapered end (4.8) is arranged at intervals with three.
5. high strength steel fiber reinforced concrete airtight blast door according to claim 1, it is characterized in that: described worm reducer (4.1) is fixedly connected on the door leaf by latch receptacles (4.27).
6. high strength steel fiber reinforced concrete airtight blast door according to claim 1 and sealed door, it is characterized in that: described upper door frame, lower door frame and both sides doorframe are welded by two angle steel (2.1), and also be welded with the lock box (2.2) that inserts for locking head on the angle steel, also have the lockhole that inserts for locking head on the angle steel.
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| CN2013102047506A CN103277027A (en) | 2013-05-29 | 2013-05-29 | High-strength steel fiber concrete protection air-tight door |
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| CN2013102047506A CN103277027A (en) | 2013-05-29 | 2013-05-29 | High-strength steel fiber concrete protection air-tight door |
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| CN104314446A (en) * | 2014-08-26 | 2015-01-28 | 武汉武船机电设备有限责任公司 | Air-tight door for pressure and radiation-resistant ship |
| CN104314394A (en) * | 2014-08-26 | 2015-01-28 | 武汉武船机电设备有限责任公司 | Transmission mechanism of sealed door |
| CN107120007A (en) * | 2017-06-09 | 2017-09-01 | 中国人民解放军61517部队 | A kind of bolt-type locking of safeguard |
| CN107781636A (en) * | 2016-08-26 | 2018-03-09 | 宜兴市人防设备厂有限公司 | A kind of headstock gear for biogas storage tank mouth portion |
| CN109610513A (en) * | 2018-11-20 | 2019-04-12 | 中国人民解放军军事科学院国防工程研究院 | A kind of blocking device applied to Urban Underground pipe gallery hoisting port safeguard |
| CN110130801A (en) * | 2019-06-10 | 2019-08-16 | 中国人民解放军军事科学院国防工程研究院 | Automatically controlled heavy type protective door |
| CN110469635A (en) * | 2019-09-07 | 2019-11-19 | 中国城市建设研究院有限公司 | It is driven blocking mechanism and protective device |
| CN111271125A (en) * | 2020-03-06 | 2020-06-12 | 广州地铁设计研究院股份有限公司 | Single-leaf steel structure fireproof protective airtight door for high-speed railway and subway tunnel |
| CN111350543A (en) * | 2020-03-16 | 2020-06-30 | 广州地铁设计研究院股份有限公司 | Concrete structure fireproof protective door for high-speed railway tunnel evacuation channel |
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| CN104314446B (en) * | 2014-08-26 | 2017-05-31 | 武汉武船机电设备有限责任公司 | A kind of pressure-resistant, radiation hardness gas-tight door peculiar to vessel |
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| CN109610513A (en) * | 2018-11-20 | 2019-04-12 | 中国人民解放军军事科学院国防工程研究院 | A kind of blocking device applied to Urban Underground pipe gallery hoisting port safeguard |
| CN110130801A (en) * | 2019-06-10 | 2019-08-16 | 中国人民解放军军事科学院国防工程研究院 | Automatically controlled heavy type protective door |
| CN110469635A (en) * | 2019-09-07 | 2019-11-19 | 中国城市建设研究院有限公司 | It is driven blocking mechanism and protective device |
| CN111271125A (en) * | 2020-03-06 | 2020-06-12 | 广州地铁设计研究院股份有限公司 | Single-leaf steel structure fireproof protective airtight door for high-speed railway and subway tunnel |
| CN111350543A (en) * | 2020-03-16 | 2020-06-30 | 广州地铁设计研究院股份有限公司 | Concrete structure fireproof protective door for high-speed railway tunnel evacuation channel |
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Application publication date: 20130904 |