CN204921036U - Sealed door in pit convenient to locking - Google Patents
Sealed door in pit convenient to locking Download PDFInfo
- Publication number
- CN204921036U CN204921036U CN201520617242.5U CN201520617242U CN204921036U CN 204921036 U CN204921036 U CN 204921036U CN 201520617242 U CN201520617242 U CN 201520617242U CN 204921036 U CN204921036 U CN 204921036U
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- Prior art keywords
- door leaf
- door
- hinged
- locking
- doorframe
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- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Abstract
The utility model discloses a sealed door in pit convenient to locking, include the door frame and articulate the door leaf on the door frame, the door frame evenly outwards is connected with a plurality of reinforced structures along its outward flange, and each reinforced structure is built by laying bricks or stones in the wall body of sealed door department, the reinforced structure lies in the door leaf inboard, and fixedly connected with cylinder connecting plate on the reinforced structure, cylinder connecting plate hinge through articulated seat has the cylinder, and the end that stretches out of cylinder hinges with the door leaf mutually, be equipped with locking mechanism on the door leaf, locking mechanism is including connecting spider, center pin, left transfer line group, right transfer line group, articulated shaft and the locking board on the door leaf, the locking board blocks when being located the rotatory position of a limit the door frame, the utility model discloses the sealed door in pit convenient to locking that can utilize pneumatic means far to close or open can also the handedness after closing move locking, make the sealed door firmly the locking on the door frame.
Description
Technical field
The utility model relates to a kind of down-hole and takes precautions against natural calamities and use sealed door.
Background technology
During underground coal mine breaking out of fire, the mishandling expansion that very easily causes the accident, and fire is once spread expansion, is difficult to directly fire be put out, and takes fire sealing fire smothering to be conventional fire extinguishing means.When building fire dam fire sealing, how at return side construction operation, temperature is high, smog is large, sight line is unclear, and under toxic and harmful impact, emergency personnel must wear breather operation, speed of application is slow, when particularly building the last enclosed ventilation hole of fire dam, flame range composition of gases within can great changes will take place, if fire occurs in highly gassy mine, be easy to gas accumulation is exploded to explosion ratio scope, a large amount of on-the-spot emergency personnel's injures and deaths can be caused.
If when building fire dam by laying bricks or stones, fire dam is built by laying bricks or stones together can the sealed door of Long-distance Control, and after constructor withdraws scene, sealed door is shut by operated from a distance, then can avoid the generation of this type of accident, for constructor provides safety guarantee.At present, market lacks this underground airtight door being suitable for Long-distance Control, door leaf can be locked.Sealed door is when closing, and the compactness how strengthened between door leaf and doorframe is also a problem needing to solve.Down-hole sealed door requires higher installation strength, how to improve the installation strength of sealed door on body of wall, is also a problem that need solve.
Utility model content
The purpose of this utility model is to provide a kind of underground airtight door being suitable for utilizing the long-range closedown of pneumatic means or unlatching, and this underground airtight door is installed very firm on body of wall, can also manual locking after closedown, and sealed door is locked on doorframe securely.
For achieving the above object, the underground airtight door being convenient to locking of the present utility model comprises doorframe and is hinged on the door leaf on doorframe;
Described doorframe is along its outward flange evenly to being externally connected with multiple ruggedized construction, and each ruggedized construction is built by laying bricks or stones in the body of wall at sealed door place;
The direction rotarily opened with door leaf is extroversion, described ruggedized construction is positioned at inside door leaf, ruggedized construction is fixedly connected with cylinder junction plate, and cylinder junction plate extends internally and its inner is fixedly connected with hinged seat, hinged seat is hinged with cylinder, and external part and the door leaf of cylinder are hinged;
Described door leaf is provided with retaining mechanism; Retaining mechanism comprises the spider be connected on door leaf, central axis, Left Drive bar group, right drive link group, jointed shaft and latch;
Described central axis is connected to door leaf center, and the inner of central axis is connected with described spider;
Described latch to be connected on jointed shaft and to form locking device; Be interval with some locking devices up and down on the left of the inner surface of described door leaf, on the right side of the inner surface of described door leaf, be interval with some locking devices up and down,
Described Left Drive bar group comprises all vertical left input lever that arranges and left trace, and on left trace, interval is hinged with some dowel bars, and the jointed shaft on the left of the dowel bar of Left Drive bar group and door leaf connects one to one; The dowel bar of left trace top extends and hinged with the top of described left input lever in the middle part of door leaf; The bottom of described left input lever is hinged on the left-hand portion of described spider;
Described right drive link group comprises all vertical right input lever that arranges and right trace, and on right trace, interval is hinged with some dowel bars, and the jointed shaft on the right side of the dowel bar of right drive link group and door leaf connects one to one; The dowel bar of right trace bottommost extends and together with the bottom-hinged of described right input lever in the middle part of door leaf; The top of described right input lever is hinged on the position, right side of described spider;
Described each latch all has two limit position of rotation along jointed shaft, leaves described doorframe when latch is positioned at one of them limit position of rotation, blocks described doorframe when latch is positioned at another limit position of rotation.
Top and the bottom of described door leaf inner surface are respectively equipped with a set of locking device;
The middle part of described left input lever is hinged with lower trace, and the bottom-hinged of lower trace has dowel bar, and this place's dowel bar is connected with the jointed shaft of the locking device bottom described door leaf;
The middle part of described right input lever is hinged with trace, and the top of upper trace is hinged with dowel bar, and this place's dowel bar is connected with the jointed shaft of the locking device at described door leaf top.
The protruding door leaf of described central axis is also connected with handwheel.
Described door leaf is hinged on doorframe by pin shaft structure, described pin shaft structure along a side of doorframe be uniformly distributed up and down be provided with multiple.
The inside edge place of described door leaf is provided with a circle for being installed with the sealing joint strip on doorframe.
Described air motor is fixedly connected with connecting cylinder, and connecting cylinder is bolted on door leaf.
Doorframe is provided with locking wedge with described each latch one_to_one corresponding, is pressed on wedge when latch is positioned at the position of blocking doorframe.
Described ruggedized construction comprises the channel-section steel be fixedly connected on doorframe external surface, and is fixedly connected on the round steel on channel-section steel, and the external part of round steel is hook-type.
Described round steel overall U-shaped, the bottom of U-shaped round steel is fixedly connected with channel-section steel, and two external parts of U-shaped round steel are all in hook-type; Channel-section steel and round steel are all built by laying bricks or stones in body of wall.
Described cylinder junction plate is fixedly connected on described channel-section steel.
Wherein, air motor 6, pin shaft structure 23 etc. are this area routine techniques, and its concrete structure no longer describes in detail.
When sealed door of the present utility model is installed, first channel-section steel 26 is fixedly connected with the bottom of U-shaped round steel 27 and the two is built by laying bricks or stones in body of wall, then doorframe 1 is fixedly connected on channel-section steel 26.Because two external parts of U-shaped round steel 27 all stretch into body of wall and ruggedized construction is evenly connected with multiple at doorframe 1 outward flange in hook-type, therefore doorframe 1 install on body of wall very firm, can not loosen.
After doorframe 1 installs, cylinder junction plate 3 is fixedly connected on described channel-section steel 26, door leaf 2 and doorframe 1 is passed through multiple pin shaft structure 23 hinged, then the external part of cylinder 5 and door leaf 2 are hinged, the other end of cylinder 5 is hinged on hinged seat 4.
In using, when needing to close the utility model, start cylinder 5, its external part is shunk, thus drive door leaf 2 to close.After door leaf 2 cuts out, can adopt the mode of automatic or manual that door leaf 2 is locked on doorframe 1 by latch 13.
When adopting manual locking mode, operating personnel's manual rotation handwheel 22, the spider 9 on band central shaft 10 rotates.When spider 9 rotates, left trace 16 groups is driven by left input lever 15 and right input lever 18, right trace 19 groups, upper trace 21 and lower trace 20 action, thus make each dowel bar 17 and jointed shaft 12 drive each latch 13 to rotate, latch 13 is pressed onto when rotating on wedge 14, thus door leaf 2 is pressed on doorframe 1 securely, now sealing joint strip 24 is pressed on doorframe 1 tightly, improve sealing performance, namely in side door, pressure increases suddenly when the accidents such as coal bed gas leakage (occur under ore deposit pressure can increase suddenly), door leaf 2 also can not be rushed to open under the effect of the pressure, further enhancing the security protection performance of sealed door.
When adopting automatic locking mode, start air motor 6 air motor 6 and drive pinion 7 to rotate.By engaged transmission, pinion 7 drives gear wheel 8 and central gear 11 to rotate, and central gear 11 drives spider 9 to rotate.Drive the transmission process of latch 13 with transmission process during above-mentioned manual locking when spider 9 rotates, be pressed onto on wedge 14 when finally making latch 13 rotate, thus door leaf 2 is pressed on doorframe 1 securely.
The utility model structure is simple, is easy to make and install and use.Ruggedized construction greatly strengthen the firmness that doorframe is installed on body of wall.
The setting of cylinder, can stretching out and retraction by control cylinder external part, automatically realizes the action of opening the door or closing the door, and in person arrive on-the-spot closedown sealed door, improve operational security when making staff need not be in distress phase in down-hole.The setting of retaining mechanism, can by the cooperation of locking device and wedge, and door leaf is pressed on doorframe firmly, even if down-hole pressure increases suddenly, door leaf also can not be rushed to open under the effect of the pressure, further enhancing the security protection performance of sealed door.Locking mechanism structure is reasonable, reliable in action, can ensure the accurate execution of locking action.
The setting of many covers locking device, together with door leaf and doorframe are fixedly pressed against from multiple spot when locking, enhances locking safety.
Manual locking door leaf is extremely convenient in the setting of handwheel, facilitates operation.
Sealing joint strip enhances sealing performance of the present utility model.The external part of round steel is hook-type, thus more firm in combination with body of wall.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A direction view of Fig. 1;
Fig. 3 is the B-B direction view of Fig. 1;
Fig. 4 is the enlarged drawing at A place in Fig. 3;
Fig. 5 is figure
3the enlarged drawing at middle B place.
Detailed description of the invention
In Fig. 1, dotted line is depicted as the parts being arranged on door leaf 2 rear surface, mainly the drive disk assembly of retaining mechanism;
In Fig. 2, dotted line is depicted as the cylinder 5 and door leaf 2 that are positioned at enable possition.
As shown in Figures 1 to 5, the underground airtight door being convenient to locking of the present utility model comprises the doorframe 1 of building by laying bricks or stones in fire dam body of wall and the door leaf 2 be hinged on doorframe 1;
Described doorframe 1 is along its outward flange evenly to being externally connected with multiple ruggedized construction, and each ruggedized construction is built by laying bricks or stones in the body of wall at sealed door place;
The direction rotarily opened with door leaf 2 is extroversion, described ruggedized construction is positioned at the right part inside door leaf 2, ruggedized construction is fixedly connected with cylinder junction plate 3, cylinder junction plate 3 extends internally and its inner is fixedly connected with hinged seat 4, hinged seat 4 is hinged with cylinder 5, and the external part of cylinder 5 and the left side of door leaf 2 are hinged;
Described door leaf 2 is provided with retaining mechanism; Retaining mechanism comprises the air motor 6 be connected on door leaf 2, pinion 7, gear wheel 8, spider 9, central axis 10, central gear 11, Left Drive bar group, right drive link group, jointed shaft 12 and latch 13;
Described central axis 10 is rotatably connected on door leaf 2 center by bearing, and the inner of central axis 10 is connected with described spider 9, and central axis 10 is provided with described central gear 11;
Described latch 13 to be connected on jointed shaft 12 and to form locking device; Be interval with some locking devices up and down on the left of the inner surface of described door leaf 2, be interval with some locking devices up and down on the right side of the inner surface of described door leaf 2, the locking device of described door leaf 2 left and right sides is symmetrical arranged.
Described Left Drive bar group comprises left input lever 15 and the left trace 16 of all vertical setting, and on left trace 16, interval is hinged with some dowel bars 17, and the dowel bar 17 of Left Drive bar group connects one to one with the jointed shaft 12 on the left of door leaf 2; The dowel bar 17 of left trace 16 top extends and hinged with the top of described left input lever 15 in the middle part of door leaf 2; The bottom of described left input lever 15 is hinged on the left-hand portion of described spider 9;
Described right drive link group comprises right input lever 18 and the right trace 19 of all vertical setting, and on right trace 19, interval is hinged with some dowel bars 17, and the dowel bar 17 of right drive link group connects one to one with the jointed shaft 12 on the right side of door leaf 2; The dowel bar 17 of right trace 19 bottommost extends and together with the bottom-hinged of described right input lever 18 in the middle part of door leaf 2; The top of described right input lever 18 is hinged on the position, right side of described spider 9.
Described each latch 13 all has two limit position of rotation along jointed shaft 12, leaves described doorframe 1 when latch 13 is positioned at one of them limit position of rotation, blocks described doorframe 1 when latch 13 is positioned at another limit position of rotation.
Doorframe 1 is provided with locking wedge 14 with described each latch 13 one_to_one corresponding, is pressed in when latch 13 is positioned at the position of blocking doorframe 1 on wedge 14.
The output shaft of described air motor 6 is connected with described pinion 7, and the wheel shaft of described gear wheel 8 is arranged on door leaf 2, is meshed bottom gear wheel 8 with pinion 7, and the top of gear wheel 8 is meshed with described central gear 11.
Top and the bottom of described door leaf 2 inner surface are respectively equipped with a set of locking device;
The middle part of described left input lever 15 is hinged with lower trace 20, and the bottom-hinged of lower trace 20 has dowel bar 17, and this place's dowel bar 17 is connected with the jointed shaft 12 of the locking device bottom described door leaf 2;
The middle part of described right input lever 18 is hinged with trace 21, and the top of upper trace 21 is hinged with dowel bar 17, and this place's dowel bar 17 is connected with the jointed shaft 12 of the locking device at described door leaf 2 top.
The protruding door leaf 2 of described central axis 10 is also connected with handwheel 22.Manual locking door leaf is extremely convenient in the setting of handwheel, facilitates operation.
Described door leaf 2 is hinged on doorframe 1 by pin shaft structure 23, described pin shaft structure 23 along a side of doorframe 1 be uniformly distributed up and down be provided with multiple.Wherein, air motor 6, pin shaft structure 23 etc. are this area routine techniques, and its concrete structure no longer describes in detail.
The inside edge place of described door leaf 2 is provided with a circle for being installed with the sealing joint strip 24 on doorframe 1, to strengthen sealing performance when sealed door is closed.
Described air motor 6 is fixedly connected with connecting cylinder 25, and connecting cylinder 25 is bolted on door leaf 2.
Described ruggedized construction comprises the channel-section steel 26 be fixedly connected on doorframe 1 external surface, and is fixedly connected on the round steel 27 on channel-section steel 26, and the external part of round steel 27 is hook-type, thus more firm in combination with body of wall.
Described round steel 27 overall U-shaped, the bottom of U-shaped round steel 27 is fixedly connected with channel-section steel 26, and two external parts of U-shaped round steel 27 are all in hook-type; Channel-section steel 26 and round steel 27 are all built by laying bricks or stones in body of wall.
Sealing joint strip 24 enhances sealing performance of the present utility model.The external part of round steel 27 is hook-type, thus more firm in combination with body of wall.
Described cylinder junction plate 3 is fixedly connected on described channel-section steel 26.
The utility model structure is simple, is easy to make and install and use.Ruggedized construction greatly strengthen the firmness that doorframe is installed on body of wall.
The setting of cylinder, can stretching out and retraction by control cylinder external part, automatically realizes the action of opening the door or closing the door, and in person arrive on-the-spot closedown sealed door, improve operational security when making staff need not be in distress phase in down-hole.The setting of retaining mechanism, can by the cooperation of locking device and wedge, and door leaf is pressed on doorframe firmly, even if down-hole pressure increases suddenly, door leaf also can not be rushed to open under the effect of the pressure, further enhancing the security protection performance of sealed door.Locking mechanism structure is reasonable, reliable in action, can ensure the accurate execution of locking action.
The setting of many covers locking device, together with door leaf and doorframe are fixedly pressed against from multiple spot when locking, enhances locking safety.
When sealed door of the present utility model is installed, first channel-section steel 26 is fixedly connected with the bottom of U-shaped round steel 27 and the two is built by laying bricks or stones in body of wall, then doorframe 1 is fixedly connected on channel-section steel 26.Because two external parts of U-shaped round steel 27 all stretch into body of wall and ruggedized construction is evenly connected with multiple at doorframe 1 outward flange in hook-type, therefore doorframe 1 install on body of wall very firm, can not loosen.
After doorframe 1 installs, cylinder junction plate 3 is fixedly connected on described channel-section steel 26, door leaf 2 and doorframe 1 is passed through multiple pin shaft structure 23 hinged, then the external part of cylinder 5 and door leaf 2 are hinged, the other end of cylinder 5 is hinged on hinged seat 4.
In using, when needing to close the utility model, start cylinder 5, its external part is shunk, thus drive door leaf 2 to close.After door leaf 2 cuts out, can adopt the mode of automatic or manual that door leaf 2 is locked on doorframe 1 by latch 13.
When adopting manual locking mode, operating personnel's manual rotation handwheel 22, the spider 9 on band central shaft 10 rotates.When spider 9 rotates, left trace 16 groups is driven by left input lever 15 and right input lever 18, right trace 19 groups, upper trace 21 and lower trace 20 action, thus make each dowel bar 17 and jointed shaft 12 drive each latch 13 to rotate, latch 13 is pressed onto when rotating on wedge 14, thus door leaf 2 is pressed on doorframe 1 securely, now sealing joint strip 24 is pressed on doorframe 1 tightly, improve sealing performance, namely in side door, pressure increases suddenly when the accidents such as coal bed gas leakage (occur under ore deposit pressure can increase suddenly), door leaf 2 also can not be rushed to open under the effect of the pressure, further enhancing the security protection performance of sealed door.
When adopting automatic locking mode, start air motor 6 air motor 6 and drive pinion 7 to rotate.By engaged transmission, pinion 7 drives gear wheel 8 and central gear 11 to rotate, and central gear 11 drives spider 9 to rotate.Drive the transmission process of latch 13 with transmission process during above-mentioned manual locking when spider 9 rotates, be pressed onto on wedge 14 when finally making latch 13 rotate, thus door leaf 2 is pressed on doorframe 1 securely.
Above embodiment is the unrestricted the technical solution of the utility model in order to explanation only, although be described in detail the utility model with reference to above-described embodiment, those of ordinary skill in the art is to be understood that: still can modify to the utility model or equivalent replacement, and not departing from any modification or partial replacement of spirit and scope of the present utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (9)
1. be convenient to the underground airtight door of locking, it is characterized in that: comprise doorframe and be hinged on the door leaf on doorframe;
Described doorframe is along its outward flange evenly to being externally connected with multiple ruggedized construction, and each ruggedized construction is built by laying bricks or stones in the body of wall at sealed door place;
The direction rotarily opened with door leaf is extroversion, described ruggedized construction is positioned at inside door leaf, ruggedized construction is fixedly connected with cylinder junction plate, and cylinder junction plate extends internally and its inner is fixedly connected with hinged seat, hinged seat is hinged with cylinder, and external part and the door leaf of cylinder are hinged;
Described door leaf is provided with retaining mechanism; Retaining mechanism comprises the spider be connected on door leaf, central axis, Left Drive bar group, right drive link group, jointed shaft and latch;
Described central axis is connected to door leaf center, and the inner of central axis is connected with described spider;
Described latch to be connected on jointed shaft and to form locking device; Be interval with some locking devices up and down on the left of the inner surface of described door leaf, on the right side of the inner surface of described door leaf, be interval with some locking devices up and down,
Described Left Drive bar group comprises all vertical left input lever that arranges and left trace, and on left trace, interval is hinged with some dowel bars, and the jointed shaft on the left of the dowel bar of Left Drive bar group and door leaf connects one to one; The dowel bar of left trace top extends and hinged with the top of described left input lever in the middle part of door leaf; The bottom of described left input lever is hinged on the left-hand portion of described spider;
Described right drive link group comprises all vertical right input lever that arranges and right trace, and on right trace, interval is hinged with some dowel bars, and the jointed shaft on the right side of the dowel bar of right drive link group and door leaf connects one to one; The dowel bar of right trace bottommost extends and together with the bottom-hinged of described right input lever in the middle part of door leaf; The top of described right input lever is hinged on the position, right side of described spider;
Described each latch all has two limit position of rotation along jointed shaft, leaves described doorframe when latch is positioned at one of them limit position of rotation, blocks described doorframe when latch is positioned at another limit position of rotation.
2. the underground airtight door being convenient to locking according to claim 1, is characterized in that:
Top and the bottom of described door leaf inner surface are respectively equipped with a set of locking device;
The middle part of described left input lever is hinged with lower trace, and the bottom-hinged of lower trace has dowel bar, and this place's dowel bar is connected with the jointed shaft of the locking device bottom described door leaf;
The middle part of described right input lever is hinged with trace, and the top of upper trace is hinged with dowel bar, and this place's dowel bar is connected with the jointed shaft of the locking device at described door leaf top.
3. the underground airtight door being convenient to locking according to claim 2, is characterized in that: the protruding door leaf of described central axis is also connected with handwheel.
4. the underground airtight door being convenient to locking according to any one of claim 1 to 3, is characterized in that:
Described door leaf is hinged on doorframe by pin shaft structure, described pin shaft structure along a side of doorframe be uniformly distributed up and down be provided with multiple.
5. the underground airtight door being convenient to locking according to any one of claim 1 to 3, is characterized in that: the inside edge place of described door leaf is provided with a circle for being installed with the sealing joint strip on doorframe.
6. the underground airtight door being convenient to locking according to any one of claim 1 to 3, is characterized in that: doorframe is provided with locking wedge with described each latch one_to_one corresponding, is pressed on wedge when latch is positioned at the position of blocking doorframe.
7. the underground airtight door being convenient to locking according to any one of claim 1 to 3, is characterized in that:
Described ruggedized construction comprises the channel-section steel be fixedly connected on doorframe external surface, and is fixedly connected on the round steel on channel-section steel, and the external part of round steel is hook-type.
8. the underground airtight door being convenient to locking according to claim 7, it is characterized in that: described round steel overall U-shaped, the bottom of U-shaped round steel is fixedly connected with channel-section steel, and two external parts of U-shaped round steel are all in hook-type; Channel-section steel and round steel are all built by laying bricks or stones in body of wall.
9. the underground airtight door being convenient to locking according to claim 7, is characterized in that: described cylinder junction plate is fixedly connected on described channel-section steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520617242.5U CN204921036U (en) | 2015-08-17 | 2015-08-17 | Sealed door in pit convenient to locking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520617242.5U CN204921036U (en) | 2015-08-17 | 2015-08-17 | Sealed door in pit convenient to locking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204921036U true CN204921036U (en) | 2015-12-30 |
Family
ID=54970173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520617242.5U Expired - Fee Related CN204921036U (en) | 2015-08-17 | 2015-08-17 | Sealed door in pit convenient to locking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204921036U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107882460A (en) * | 2017-02-15 | 2018-04-06 | 宁波市世纪防护设备厂 | Automatic opening and closing device capable of rotating 180 degrees for moisture-proof sealed door |
-
2015
- 2015-08-17 CN CN201520617242.5U patent/CN204921036U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107882460A (en) * | 2017-02-15 | 2018-04-06 | 宁波市世纪防护设备厂 | Automatic opening and closing device capable of rotating 180 degrees for moisture-proof sealed door |
| CN107882461A (en) * | 2017-02-15 | 2018-04-06 | 宁波市世纪防护设备厂 | A kind of moisture-proof airtight door automatic opening-closing that can be compareed automatically |
| CN107905671A (en) * | 2017-02-15 | 2018-04-13 | 宁波市世纪防护设备厂 | A kind of automatic opening-closing for moisture-proof airtight door |
| CN107939211A (en) * | 2017-02-15 | 2018-04-20 | 王正作 | A kind of moisture-proof airtight door automatic opening-closing of sealed reliable |
| CN107882460B (en) * | 2017-02-15 | 2019-08-20 | 南京聚诚致远财务顾问有限公司 | Automatic opening and closing device capable of rotating 180 degrees for moisture-proof sealed door |
| CN107882461B (en) * | 2017-02-15 | 2019-08-20 | 南京聚诚致远财务顾问有限公司 | A kind of moisture-proof airtight door automatic opening-closing that can be compareed automatically |
| CN107939211B (en) * | 2017-02-15 | 2019-08-27 | 南京聚诚致远财务顾问有限公司 | A kind of moisture-proof airtight door automatic opening-closing of sealed reliable |
| CN107905671B (en) * | 2017-02-15 | 2019-09-24 | 广西巨安人防工程防护设备有限公司 | A kind of automatic opening-closing for moisture-proof airtight door |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20160817 |