CN112983213A - Tunnel protection door - Google Patents
Tunnel protection door Download PDFInfo
- Publication number
- CN112983213A CN112983213A CN202110237667.3A CN202110237667A CN112983213A CN 112983213 A CN112983213 A CN 112983213A CN 202110237667 A CN202110237667 A CN 202110237667A CN 112983213 A CN112983213 A CN 112983213A
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- Prior art keywords
- door
- assembly
- door frame
- door leaf
- frame assembly
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- 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.)
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- 238000005452 bending Methods 0.000 claims abstract description 3
- 239000011810 insulating material Substances 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
- 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
-
- 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
- E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Special Wing (AREA)
Abstract
The invention relates to a tunnel protection door, which comprises a first door body and a second door body which are sequentially arranged along the width direction of the tunnel protection door; the first door body comprises a first door frame assembly, a first door leaf assembly is arranged on the first door frame assembly in a rotating hinged mode, a door closer is arranged between the upper edge of the first door leaf assembly, which is close to the rotating hinged side of the first door leaf assembly, and the first door frame assembly, and first connecting seats are fixedly connected to two sides of the first door frame assembly; the second door body comprises a second door frame assembly, a second door leaf assembly is rotatably hinged to the second door frame assembly, a three-point type push lever lock is arranged on the second door leaf assembly, and second connecting seats are fixedly connected to two sides of the second door frame assembly; the first door leaf assembly comprises a first base framework and a first panel, the second door leaf assembly comprises a second base framework and a second panel, the first door frame assembly and the second door frame assembly are both bending door frames, and a first corrugated strip plate is arranged between the first panels and located in the first door leaf assembly.
Description
Technical Field
The invention relates to the technical field of protective doors, in particular to a tunnel protective door.
Background
The tunnel protection door is a door body used for auxiliary chambers and passages of the tunnel, and has the functions of anti-riot, fire prevention, isolation protection and the like. The door mainly comprises a door frame, a door leaf, a hinge, a lock, door leaf fillers and a locking mechanism (a lockset, a hand wheel or a handle for a transmission mechanism and metal accessories). The hinge mechanism is connected with the door frame and the door leaf and can rotate relatively, the door leaf and the door frame are firmly locked together by the locking mechanism, and the door leaf filler is fireproof and heat-insulating material. Compared with a general culvert tunnel, the high-speed rail tunnel has the advantages that the speed of the vehicle is faster, so that the wind pressure resistance of the protective door of the high-speed rail tunnel needs to be stronger, in fact, the wind pressure resistance load of the protective door of the high-speed rail tunnel is not less than 5000Pa, and the design of the wind pressure resistance of the protective door of the high-speed rail tunnel needs to be further increased along with the acceleration of the high-speed rail and the further expansion of the applicable environment.
Disclosure of Invention
The invention aims to provide a tunnel protection door which is suitable for a high-speed rail tunnel, has high wind pressure resistance and long service life.
In order to achieve the above purpose, the invention adopts the technical scheme that: a tunnel protection door comprises a first door body and a second door body which are sequentially arranged along the width direction of the tunnel protection door; the first door body comprises a first door frame assembly, a first door leaf assembly is arranged on the first door frame assembly in a rotating hinged mode, a door closer is arranged between the upper edge of the first door leaf assembly, which is close to the rotating hinged side of the first door leaf assembly, and the first door frame assembly, and first connecting seats are fixedly connected to two sides of the first door frame assembly; the second door body comprises a second door frame assembly, a second door leaf assembly is rotatably hinged to the second door frame assembly, a three-point type push lever lock is arranged on the second door leaf assembly, and second connecting seats are fixedly connected to two sides of the second door frame assembly; the first door leaf assembly comprises a first base framework and a first panel, the second door leaf assembly comprises a second base framework and a second panel, the first door frame assembly and the second door frame assembly are both bent door frames, first corrugated strips are arranged between the first panels in the first door leaf assembly, adjacent first corrugated strips are arranged in a reverse direction, and fireproof heat-insulating materials are filled between the first corrugated strips and the first base framework; and second corrugated laths are arranged between the second panels in the second door leaf assembly, the adjacent second corrugated laths are reversely arranged, and fireproof and heat-insulating materials are filled between the second corrugated laths and the second base framework.
Furthermore, first wave form slat and first panel between the joint, this joint end sets up first buffer gear, first buffer gear one end and first wave form slat board end link firmly, the other end links firmly with the interior face of first panel, first buffer gear overcoat is established first stop gear.
Furthermore, the second corrugated slat and the second panel are clamped, a second buffer mechanism is arranged at the clamping end, one end of the second buffer mechanism is fixedly connected with the end of the second corrugated slat, the other end of the second buffer mechanism is fixedly connected with the inner panel surface of the second panel, and a second limiting mechanism is sleeved outside the second buffer mechanism.
Still further, first connecting seat be provided with a plurality ofly along the direction of height interval of first door frame subassembly, the second connecting seat be provided with a plurality ofly along the direction of height interval of second door frame subassembly, first connecting seat equals with the second connecting seat number, and first connecting seat and second connecting seat parallel and level arrange.
Still further, an anti-falling chain is arranged between the first door leaf assembly and the second door leaf assembly, one end of the anti-falling chain is fixed on the first door leaf assembly, the other end of the anti-falling chain is fixed on the second door leaf assembly, and a plurality of anti-falling chains are arranged at intervals along the height direction of the first door frame assembly.
Still further, a reinforced rotating shaft is arranged on the first door leaf assembly at the rotary hinge position of the first door leaf assembly, and the reinforced rotating shaft is arranged outside the first door leaf assembly.
The invention has the technical effects that: the tunnel protection door is formed by arranging a first door body and a second door body in a tunnel in sequence. The first waveform lath is arranged between the first panels in the first door leaf assembly, referring to the attached drawing, the first waveform lath is a supporting strip plate structure arranged along the height direction of the first door body, the cross section of the supporting strip plate structure is in a wave shaping shape, one end of the waveform is arranged on one side panel surface, the other end of the waveform is arranged on the other side panel surface, because the wind pressure is extruded from all directions of the outer panel surface of the first panel, the arranged wave shaping first waveform lath can form multi-directional support for the extrusion from all directions, and because of the wave shaping design, the support also has certain elastic return property, based on the design, the adjacent first waveform laths are reversely arranged, so the pressed support effect is better, the support is uniform and the release is uniform, the same is true, the second door body is also the same, the wind pressure resistance effect is good, and the wind pressure resistance is strong, the anti-wind pressure device is suitable for high-speed rail tunnels, and has high wind pressure resistance and long service life.
Drawings
FIG. 1 is a structural diagram of the present invention, in which a first door body and a second door body are separately arranged;
FIG. 2 is a cross-sectional partial block diagram of the present invention;
fig. 3 is a partially enlarged view of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawings, the tunnel protection door comprises a first door body and a second door body which are sequentially arranged along the width direction of the tunnel protection door; the first door body comprises a first door frame component 1, a first door leaf component 2 is arranged on the first door frame component 1 in a rotating hinged mode, a door closer 5 is arranged between the upper edge of the first door leaf component 2, close to the rotating hinged side of the first door leaf component, and the first door frame component 1, and two sides of the first door frame component 1 are fixedly connected with first connecting seats 7; the second door body comprises a second door frame assembly 9, a second door leaf assembly 10 is rotatably hinged on the second door frame assembly 9, a three-point type push lever lock 6 is arranged on the second door leaf assembly 10, and second connecting seats 8 are fixedly connected to two sides of the second door frame assembly 9; the first door leaf assembly 2 comprises a first base framework 2a and a first panel 2b, the second door leaf assembly 10 comprises a second base framework 10a and a second panel 10b, the first door frame assembly 1 and the second door frame assembly 9 are both bent door frames, first corrugated slats 11 are arranged between the first panels 2b in the first door leaf assembly 2, adjacent first corrugated slats 11 are arranged in a reverse direction, and fireproof heat-insulating materials are filled between the first corrugated slats 11 and the first base framework 2 a; second corrugated slats 12 are arranged between the second panels 10b in the second door leaf assembly 10, the adjacent second corrugated slats 12 are arranged in a reverse direction, and the fireproof and heat-insulating materials are filled between the second corrugated slats 12 and the second base frame 10 a.
Further, first wave form slat 11 and first panel 2b between the joint, this joint end sets up first buffer gear, first buffer gear one end and 11 board ends of first wave form slat link firmly, the other end links firmly with the interior face of first panel 2b, first stop gear is established to first buffer gear overcoat.
Furthermore, the second corrugated slat 12 and the second panel 10b are connected in a clamping manner, a second buffer mechanism is arranged at the end of the clamping manner, one end of the second buffer mechanism is fixedly connected with the end of the second corrugated slat 12, the other end of the second buffer mechanism is fixedly connected with the inner panel surface of the second panel 10b, and a second limiting mechanism is sleeved outside the second buffer mechanism.
Still further, first connecting seat 7 be provided with a plurality ofly along the direction of height interval of first door frame subassembly 1, second connecting seat 8 be provided with a plurality ofly along the direction of height interval of second door frame subassembly 9, first connecting seat 7 equals with 8 numbers of second connecting seat, and first connecting seat 7 and 8 parallel and level arrangements of second connecting seat.
Still further, an anti-falling chain 4 is arranged between the first door leaf assembly 2 and the second door leaf assembly 10, one end of the anti-falling chain 4 is fixed on the first door leaf assembly 2, the other end of the anti-falling chain 4 is fixed on the second door leaf assembly 10, and the anti-falling chains 4 are arranged in a plurality at intervals along the height direction of the first door frame assembly 1.
Still further, a reinforced rotating shaft 3 is arranged on the first door leaf assembly 2 at the position where the first door leaf assembly is rotatably hinged, and the reinforced rotating shaft 3 is arranged outside the first door leaf assembly 2.
The tunnel protection door is formed by arranging a first door body and a second door body in a tunnel in sequence. The first corrugated lath 11 is arranged between the first panels 2b in the first door leaf assembly 2, referring to the attached drawing, the first corrugated lath 11 is a supporting strip plate structure arranged along the height direction of the first door body, the cross section of the supporting strip plate structure is in a wave shaping shape, one end of the wave shape is arranged on one side plate surface, the other end of the wave shape is arranged on the other side plate surface, because the wind pressure is extruded from all directions of the outer plate surface of the first panel 2b, the arranged wave shaping first corrugated lath 11 can form multi-directional support for the extrusion from all directions, and because of the wave shaping design, the support also has certain elastic return performance, and based on the design, the adjacent first corrugated laths 11 are reversely arranged, so that the pressed support effect is better, the support is uniform and the release is uniform, and the same is true, so is the second door body, therefore, the wind pressure resistance effect is good, The wind pressure resistance is strong, the wind pressure resistance is large, and the service life is long, and the wind pressure resistance is suitable for high-speed railway tunnels.
And at first wave form slat 11, the stiff end of the board end of the whole ripples shape of second wave form slat 12 sets up slowly, whole slowly the piece is the cover and establishes fixing on first panel 2b, on the fixing base on the face in the second panel 10b, be provided with the spacing passageway that matches with the board end of whole ripples shape on the fixing base, first wave form slat 11, the buffering of second wave form slat 12 is along spacing passageway, that is to say, the extrusion of wind pressure can not cause first door body, the loose deformation in the internal portion of second door body, the result of use is further improved, and the tunnel guard gate wholeness is not influenced.
The wind pressure load resistance of the tunnel protection door is more than 6000 Pa; the first door frame assembly 1 and the second door frame assembly 9 are both bending door frames with curved surfaces, and the first door frame assembly 1 and the second door frame assembly 9 are both made of 2.5mm stainless steel plates and lined with 5.0mm channel steel; the first door leaf component 2 and the second door leaf component 10 of the door leaf are made of 1.5mm stainless steel plates, fireproof heat-insulating core materials are filled in the stainless steel plates, and the first base framework 2a and the second base framework 10a of the framework are made of galvanized square pipes with the wall thickness of 2.5 mm.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.
Claims (6)
1. A tunnel protection door comprises a first door body and a second door body which are sequentially arranged along the width direction of the tunnel protection door; the first door body comprises a first door frame assembly (1), a first door leaf assembly (2) is rotatably hinged on the first door frame assembly (1), a door closer (5) is hinged between the upper edge of the first door leaf assembly (2) close to the rotatably hinged side and the first door frame assembly (1), and first connecting seats (7) are fixedly connected to two sides of the first door frame assembly (1); the second door body comprises a second door frame assembly (9), a second door leaf assembly (10) is rotatably hinged on the second door frame assembly (9), a three-point type push lever lock (6) is arranged on the second door leaf assembly (10), and second connecting seats (8) are fixedly connected to two sides of the second door frame assembly (9); first door leaf subassembly (2) include first base skeleton (2a) and first panel (2b), second door leaf subassembly (10) include second base skeleton (10a) and second panel (10b), first door frame subassembly (1), second door frame subassembly (9) be the door frame of bending, its characterized in that: first corrugated strips (11) are arranged between the first panels (2b) in the first door leaf assembly (2), adjacent first corrugated strips (11) are reversely arranged, and fireproof and heat-insulating materials are filled between the first corrugated strips (11) and the first basic skeleton (2 a); and second corrugated laths (12) are arranged between the second panels (10b) in the second door leaf assembly (10), the adjacent second corrugated laths (12) are reversely arranged, and fireproof and heat-insulating materials are filled between the second corrugated laths (12) and the second basic skeleton (10 a).
2. The tunnel guard door of claim 1, wherein: first wave form slat (11) and first panel (2b) between joint, this joint end sets up first buffer gear, first buffer gear one end link firmly with first wave form slat (11) board end, the other end links firmly with the interior face of first panel (2b), first stop gear is established to first buffer gear overcoat.
3. The tunnel guard door of claim 1, wherein: the second corrugated slat (12) and the second panel (10b) are connected in a clamping mode, a second buffer mechanism is arranged at the end of the clamping mode, one end of the second buffer mechanism is fixedly connected with the end of the second corrugated slat (12), the other end of the second buffer mechanism is fixedly connected with the inner plate surface of the second panel (10b), and a second limiting mechanism is sleeved outside the second buffer mechanism.
4. The tunnel guard door of claim 1, 2 or 3, wherein: first connecting seat (7) be provided with a plurality ofly along the direction of height interval of first door frame subassembly (1), second connecting seat (8) be provided with a plurality ofly along the direction of height interval of second door frame subassembly (9), first connecting seat (7) and second connecting seat (8) number equal, and first connecting seat (7) and second connecting seat (8) parallel and level arrange.
5. The tunnel guard door of claim 1, 2 or 3, wherein: the door frame is characterized in that an anti-falling chain (4) is arranged between the first door leaf assembly (2) and the second door leaf assembly (10), one end of the anti-falling chain (4) is fixed on the first door leaf assembly (2), the other end of the anti-falling chain is fixed on the second door leaf assembly (10), and a plurality of anti-falling chains (4) are arranged along the height direction of the first door frame assembly (1) at intervals.
6. The tunnel guard door of claim 1, 2 or 3, wherein: a reinforced rotating shaft (3) is arranged on the first door leaf component (2) at the rotary hinge position of the first door leaf component, and the reinforced rotating shaft (3) is arranged outside the first door leaf component (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110237667.3A CN112983213A (en) | 2021-03-04 | 2021-03-04 | Tunnel protection door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110237667.3A CN112983213A (en) | 2021-03-04 | 2021-03-04 | Tunnel protection door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112983213A true CN112983213A (en) | 2021-06-18 |
Family
ID=76352552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110237667.3A Pending CN112983213A (en) | 2021-03-04 | 2021-03-04 | Tunnel protection door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112983213A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL175766B1 (en) * | 1995-01-18 | 1999-02-26 | Glowacki Marek | Arrangement for protecting against unauthorised entering any room, in particular in the form of anti-burglary door |
| CN204691587U (en) * | 2015-05-06 | 2015-10-07 | 上海开顺海船特种门窗有限公司 | High ferro tunnel protection door |
| CN105370174A (en) * | 2014-08-13 | 2016-03-02 | 天津市格林门业有限公司 | Sound-insulation fireproof door |
| CN205421174U (en) * | 2016-04-01 | 2016-08-03 | 江苏金叶节能科技有限公司 | Flexible energy dissipation anti -collision facility |
| CN205651945U (en) * | 2016-05-03 | 2016-10-19 | 北京新能源汽车股份有限公司 | Door and have its vehicle |
| CN107083910A (en) * | 2017-06-20 | 2017-08-22 | 天津市龙甲门业有限公司 | A kind of fire resistant doorsets strengthening mechanism |
| CN207553880U (en) * | 2017-12-11 | 2018-06-29 | 成都时代掌门人科技有限公司 | A kind of quadric stress Wind-Pressure Resistance protective door |
| CN208416613U (en) * | 2018-06-27 | 2019-01-22 | 嘉兴运达智能设备有限公司 | A kind of seamless structure railway tunnel protection door |
| CN208543879U (en) * | 2018-06-21 | 2019-02-26 | 福建钢泓金属科技股份有限公司 | A kind of NEW TYPE OF COMPOSITE stainless steel plate |
| CN208698090U (en) * | 2018-09-05 | 2019-04-05 | 浙江希望包装有限公司 | One kind having cushion performance high-tension corrugated board |
| CN211058026U (en) * | 2019-03-25 | 2020-07-21 | 中国建筑第七工程局有限公司 | Novel basement waterproof wallboard |
| CN211549419U (en) * | 2019-11-28 | 2020-09-22 | 蒋彪 | Novel anti-bruise timber |
| 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 |
-
2021
- 2021-03-04 CN CN202110237667.3A patent/CN112983213A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL175766B1 (en) * | 1995-01-18 | 1999-02-26 | Glowacki Marek | Arrangement for protecting against unauthorised entering any room, in particular in the form of anti-burglary door |
| CN105370174A (en) * | 2014-08-13 | 2016-03-02 | 天津市格林门业有限公司 | Sound-insulation fireproof door |
| CN204691587U (en) * | 2015-05-06 | 2015-10-07 | 上海开顺海船特种门窗有限公司 | High ferro tunnel protection door |
| CN205421174U (en) * | 2016-04-01 | 2016-08-03 | 江苏金叶节能科技有限公司 | Flexible energy dissipation anti -collision facility |
| CN205651945U (en) * | 2016-05-03 | 2016-10-19 | 北京新能源汽车股份有限公司 | Door and have its vehicle |
| CN107083910A (en) * | 2017-06-20 | 2017-08-22 | 天津市龙甲门业有限公司 | A kind of fire resistant doorsets strengthening mechanism |
| CN207553880U (en) * | 2017-12-11 | 2018-06-29 | 成都时代掌门人科技有限公司 | A kind of quadric stress Wind-Pressure Resistance protective door |
| CN208543879U (en) * | 2018-06-21 | 2019-02-26 | 福建钢泓金属科技股份有限公司 | A kind of NEW TYPE OF COMPOSITE stainless steel plate |
| CN208416613U (en) * | 2018-06-27 | 2019-01-22 | 嘉兴运达智能设备有限公司 | A kind of seamless structure railway tunnel protection door |
| CN208698090U (en) * | 2018-09-05 | 2019-04-05 | 浙江希望包装有限公司 | One kind having cushion performance high-tension corrugated board |
| CN211058026U (en) * | 2019-03-25 | 2020-07-21 | 中国建筑第七工程局有限公司 | Novel basement waterproof wallboard |
| CN211549419U (en) * | 2019-11-28 | 2020-09-22 | 蒋彪 | Novel anti-bruise timber |
| 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 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210618 |
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| RJ01 | Rejection of invention patent application after publication |