CN114538255A - Fast and slow door interlocking system - Google Patents
Fast and slow door interlocking system Download PDFInfo
- Publication number
- CN114538255A CN114538255A CN202210150819.0A CN202210150819A CN114538255A CN 114538255 A CN114538255 A CN 114538255A CN 202210150819 A CN202210150819 A CN 202210150819A CN 114538255 A CN114538255 A CN 114538255A
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- plate
- door
- slow
- interlocking
- shutter
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- 230000005540 biological transmission Effects 0.000 claims description 36
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/14—Control systems or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/22—Operation of door or gate contacts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/30—Constructional features of doors or gates
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Elevator Door Apparatuses (AREA)
Abstract
The invention discloses a fast and slow door interlocking system, which comprises a rack, at least one group of linked landing doors and an elevator door lock, wherein each group of landing doors comprises a shutter door plate, a corresponding shutter hanging plate, at least one slow door plate and a corresponding slow door hanging plate; the side of the shutter door panel towards the adjacent slow door panel is provided with a main lock hook, the side of the slow door panel is provided with an auxiliary lock hook bent towards the shutter door panel, and the main lock hook and the auxiliary lock hook are connected in a staggered manner to form an interlocking structure. According to the interlocking system of the fast and slow doors, on the premise that the normal operation of the shutter and the slow doors is not influenced, and the space occupied by the door panel is not increased, the safety of the elevator door is improved by arranging the interlocking structures on the two sides of the door panel and the door hanging plate.
Description
Technical Field
The invention relates to an elevator door, in particular to a fast and slow door interlocking system.
Background
In buildings with large traffic of people such as markets, hospitals and office buildings, large elevators are usually used for increasing the transportation capacity of the elevators, and in the prior art, elevator doors formed by linkage of multiple doors are very common no matter side-by-side doors or side-by-side doors are used.
In the prior art, the elevator doors are generally in transmission connection by adopting a chain, a belt, a pulley and other linkage mechanisms to realize the fast and slow movement of the elevator doors, for example, 201821150994.5 a side door opener provides a multi-leaf door structure which utilizes a rope pulley to carry out linkage; however, due to structural limitation, the door lock of the elevator door can only directly and fixedly lock one door panel, and other door panels are indirectly locked by the linkage mechanism through connecting the door panels directly and fixedly locked, and the linkage mechanism is easy to wear and age in long-term operation, and may also be broken due to an accident condition to cause connection failure, so that only the door panel provided with the door lock can be effectively locked in the operation process of the elevator, and other door panels can be opened by external force, thereby easily causing an accident.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide a safe and reliable fast and slow door interlocking system.
In order to achieve the purpose, the designed fast and slow door interlocking system comprises a rack, at least one group of linked landing doors and an elevator door lock, wherein each group of landing doors comprises a shutter door plate, a corresponding shutter hanging plate, at least one slow door plate and a corresponding slow door hanging plate; the shutter door plate is fixed below the shutter hanging plate, the slow door plate is fixed below the slow door hanging plate, a main locking hook bent towards the slow door plate is arranged on the side edge of the shutter door plate, facing the adjacent slow door plate, of the shutter door plate, an auxiliary locking hook bent towards the shutter door plate is arranged on the side edge of the slow door plate, and the main locking hook and the auxiliary locking hook are in staggered hooking connection to form an interlocking structure.
In order to increase the width of the elevator door, each group of layer doors comprises a plurality of slow door hanging plates and slow door plates which are connected with each other, and each slow door hanging plate is provided with a transmission plate with an auxiliary interlocking plate; the slow door hanging plate comprises a middle hanging plate connected with the middle door plate and a tail end hanging plate connected with the tail end door plate, a main interlocking plate is further arranged on the middle hanging plate, and the main interlocking plate of the middle hanging plate and an auxiliary interlocking plate on a transmission plate connected with the adjacent middle hanging plate or the tail end hanging plate form a releasable interlocking structure.
In order to facilitate transmission, a transmission mechanism is arranged on the transmission plate and comprises transmission pulleys rotatably mounted on the transmission plate in pairs, a steel wire rope connected and matched with the transmission pulleys, a fixer connected and fixed with the frame and a rope head frame respectively connected and fixed with the shutter hanging plate and the steel wire rope, and the fixer is connected and fixed with the steel wire rope.
In order to facilitate manufacturing, the shutter door plate and the slow door plate both adopt metal door plates, and the main lock hook and the auxiliary lock hook are metal plate bending structures on the side edges of the metal door plates.
In order to facilitate installation, adjustment and replacement, the main lock hook is an angle plate fixed on the side edge of the shutter door panel, and when the slow door panel comprises a middle door panel, the main lock hook is an angle plate fixed on the side edges of the shutter door panel and the middle door panel.
In order to increase the hooking depth of the interlocking structure and further avoid unhooking, the angle plate is provided with three bends, so that a main lock hook comprising a fixed plate, an extension plate, a bottom plate and a hooking plate is formed, and the hooking plate, the extension plate and the bottom plate form a groove for accommodating an auxiliary lock hook.
In order to facilitate installation, the rope head frame is a part of the main interlocking plate, and the main interlocking plate comprises a rope head frame arranged on the upper portion, a buckle plate in the middle portion and a connecting plate on the lower portion.
In order to facilitate manufacturing and installation, the cross section of the auxiliary interlocking plate is L-shaped and comprises an installation plate connected with the transmission plate and a locking plate hooked with the main interlocking plate, and a locking groove matched with the main interlocking plate is formed in the side edge of the auxiliary interlocking plate.
According to the interlocking system of the fast and slow doors, on the premise that the normal operation of the shutter and the slow doors is not influenced, and the space occupied by the door panel is not increased, the safety of the elevator door is improved by arranging the interlocking structures on the two sides of the door panel and the door hanging plate.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment 1 of the interlock system for quick and slow doors according to the present invention;
FIG. 2 is a connection diagram of door panels in embodiment 1;
FIG. 3 is a schematic structural view of a main interlock plate in embodiment 1;
FIG. 4 is a schematic structural view of a secondary interlocking plate in embodiment 1;
FIG. 5 is a plan view showing the engagement between the primary interlock plate and the secondary interlock plate in accordance with embodiment 1;
FIG. 6 is a schematic structural diagram of embodiment 2 of the interlock system for fast and slow doors of the present invention;
FIG. 7 is a connection diagram of door panels in embodiment 2;
fig. 8 is an enlarged view of an interlocking structure formed by the primary locking hook and the secondary locking hook in embodiment 3 of the quick and slow door interlocking system of the invention.
In the figure: the device comprises a frame 1, an elevator door lock 2, a shutter door panel 3, a shutter hanging panel 4, a slow door panel 5, a slow door hanging panel 6, a transmission plate 7, an auxiliary interlocking plate 8, a main interlocking plate 9, a main locking hook 10, an auxiliary locking hook 11, a transmission pulley 12, a steel wire rope 13, a fixer 14, a tail end door panel 50, a middle door panel 51, a middle hanging panel 60, a tail end hanging panel 61, a mounting plate 80, a locking plate 81, a locking groove 82, a rope head frame 90, a buckling plate 91, a connecting plate 92, a fixing plate 100, an extension plate 101, a bottom plate 102 and a back-hooking plate 103.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Example 1:
the fast and slow door interlocking system described in this embodiment is shown in fig. 1 to 5, and includes a frame 1, at least one set of linked landing doors and an elevator door lock 2, each set of landing doors includes a shutter door panel 3, a corresponding shutter hanging panel 4, at least one slow door panel 5, and a corresponding slow door hanging panel 6, the shutter hanging panel 4 and the slow door hanging panel 6 are movably disposed on the frame 1, a transmission plate 7 is further disposed on the frame 1, the transmission plate 7 is fixedly connected with the slow door hanging panel 6, an auxiliary interlocking plate 8 is disposed on the transmission plate 7, a main interlocking plate 9 is disposed on the shutter hanging panel 4, and the main interlocking plate 9 and the auxiliary interlocking plate 8 are hooked to form a releasable interlocking structure; shutter door plant 3 is fixed in shutter link plate 4 below, slow door plant 5 is fixed in slow door link plate 6 below, and shutter door plant 3 is equipped with the main locking hook 10 of buckling to slow door plant 5 towards the side of adjacent slow door plant 5, the side of slow door plant 5 towards shutter door plant 3 is equipped with the vice locking hook 11 of buckling to shutter door plant 3, and main locking hook 10 and the dislocation of vice locking hook 11 are colluded and are linked together and form interlocking structure.
For convenience of transmission, as shown in fig. 1 and 3, a transmission mechanism is arranged on the transmission plate 7, the transmission mechanism includes a transmission pulley 12 rotatably mounted on the transmission plate 7 in pairs, a steel wire rope 13 connected and matched with the transmission pulley 12, a fixer 14 connected and fixed with the frame 1, and a rope end frame 90 respectively connected and fixed with the shutter hanging plate 4 and the steel wire rope 13, and the fixer 14 is connected and fixed with the steel wire rope 13.
For convenience of manufacturing, as shown in fig. 2, the shutter door panel 3 and the slow door panel 5 both adopt metal door panels, and the main latch hook 10 and the auxiliary latch hook 11 are both metal plate bent structures at the side edges of the metal door panels.
For the convenience of installation, as shown in fig. 3, the head frame 90 is a part of the main interlocking plate 9, and the main interlocking plate 9 includes a head frame 90 disposed at the upper portion, a buckle plate 91 disposed at the middle portion, and a connecting plate 92 disposed at the lower portion.
For the convenience of manufacturing and installation, as shown in fig. 4 and 5, the secondary interlocking plate 8 has an L-shaped cross section, and includes a mounting plate 80 connected to the driving plate 7 and a locking plate 81 hooked to the primary interlocking plate 9, and a locking groove 82 is formed at a side edge of the locking plate 81 and engaged with the primary interlocking plate 9.
In the actual working process, the elevator door lock 2 plays a role of directly locking the shutter hanging plate 4 and the shutter door plate 3, under the normal condition, the shutter hanging plate 4 and the slow door hanging plate 6 are interlocked through the rope wheel linkage mechanism in the background technology, correspondingly, in the embodiment, the slow door hanging plate 6 and the shutter hanging plate 4 are interlocked in the normal operation through the transmission pulley 12 and the steel wire 13, in the normal operation, a certain gap can be reserved between the main interlocking plate 9 and the auxiliary interlocking plate 8, the main locking hook 10 and the auxiliary locking hook 11, when an accident occurs, such as the fracture of the steel wire 13, the falling of the transmission pulley 12 and the like, and external force is applied to the slow door plate 5, the main interlocking plate 9 and the auxiliary interlocking plate 8 are mutually hooked to mutually lock the shutter hanging plate 6 and the shutter hanging plate 4, when the buckle plate 91 is mutually locked, the buckle plate 91 is abutted to the buckle groove 82, and two planes of the buckle plate 91 and the buckle plate 81 are in a mutually crossed state, as shown in fig. 5, the stressed parts of the two door panels have larger thickness, so that the locking effect is better, and in addition, the main locking hook 10 and the auxiliary locking hook 11 are synchronously hooked with each other, so that the two door panels are not separated, and the double-safety function is achieved.
The interlocking system for the fast and slow doors provided by the embodiment improves the safety of the elevator door by arranging the interlocking structures on the two sides of the door panel on the premise of not influencing the normal operation of the shutter and the slow door and not increasing the space occupied by the door panel.
Example 2:
the fast and slow door interlock system described in this embodiment, as shown in fig. 6 and 7, is different from embodiment 1 in that, in order to increase the width of the elevator door, each group of landing doors comprises a plurality of slow door hanging plates 6 and slow door plates 5 which are connected with each other, each slow door hanging plate 6 is provided with a transmission plate 7 with an auxiliary interlocking plate 8, wherein the slow door panel 5 comprises a tail end door panel 50 arranged at the farthest end relative to the shutter door panel 3 and at least one middle door panel 51 arranged between the tail end door panel 50 and the shutter door panel 3, one side of the middle door panel 51, which faces the shutter door panel 3, is provided with an auxiliary lock hook 11, the other side is provided with a main lock hook 10, one side of the tail end door panel 50, which faces the middle door panel 51, is provided with the auxiliary lock hook 11, the auxiliary latch hook 11 at the upper end of the middle door panel 51 adjacent to the shutter door panel 3 is hooked and interlocked with the main latch hook 10 of the shutter door panel 3, and the main latch hook 10 of the middle door panel 51 is hooked and interlocked with the auxiliary latch hook 11 of the adjacent middle door panel 51 or the tail end door panel 50; the slow door hanging plate 6 comprises a middle hanging plate 60 connected with a middle door plate 51 and a tail end hanging plate 61 connected with a tail end door plate 50, a main interlocking plate 9 is further arranged on the middle hanging plate 60, and the main interlocking plate 9 of the middle hanging plate 60 and an auxiliary interlocking plate 8 on a driving plate 7 connected with the adjacent middle hanging plate 60 or the tail end hanging plate 61 form a releasable interlocking structure.
In order to facilitate installation, adjustment and replacement, the main latch hook 10 is an angle plate fixed on the side edges of the shutter door panel 3 and the middle door panel 51, and the angle plate is used as the main latch hook 10, so that the repair and replacement can be facilitated, and the maintenance cost is reduced.
This embodiment includes two sets of layer gates, forming a side-by-side gate layout, as shown in FIG. 7.
Example 3:
as shown in fig. 8, the interlock system for fast and slow doors described in this embodiment is different from embodiment 2 in that, in order to increase the hooking depth of the interlock structure and further avoid unhooking, three bends are provided on the corner plate, so as to form a main hook 10 including a fixed plate 100, an extended plate 101, a bottom plate 102 and a hook plate 103, and the hook plate 103, the extended plate 101 and the bottom plate 102 form a groove for accommodating a secondary hook 11.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A fast and slow door interlocking system comprises a rack (1), at least one group of linked landing doors and an elevator door lock (2), and is characterized in that each group of landing doors comprises a shutter door plate (3), a corresponding shutter hanging plate (4), at least one slow door plate (5) and a corresponding slow door hanging plate (6), the shutter hanging plate (4) and the slow door hanging plate (6) are movably arranged on the rack (1), a transmission plate (7) is further arranged on the rack (1), the transmission plate (7) is fixedly connected with the slow door hanging plate (6), an auxiliary interlocking plate (8) is arranged on the transmission plate (7), a main interlocking plate (9) is arranged on the shutter hanging plate (4), and the main interlocking plate (9) and the auxiliary interlocking plate (8) are hooked to form a releasable interlocking structure; shutter door plant (3) are fixed in shutter link plate (4) below, slow door plant (5) are fixed in slow door link plate (6) below, and shutter door plant (3) are equipped with main latch hook (10) of buckling to slow door plant (5) towards the side of adjacent slow door plant (5), slow door plant (5) are equipped with vice latch hook (11) of buckling to shutter door plant (3) towards the side of shutter door plant (3), and main latch hook (10) and vice latch hook (11) dislocation are colluded and are linked together and are formed interlocking structure.
2. The fast and slow door interlocking system as claimed in claim 1, wherein each group of layer doors comprises a plurality of slow door hanging plates (6) and slow door plates (5) connected with each other, each slow door hanging plate (6) is provided with a transmission plate (7) with a secondary interlocking plate (8), wherein each slow door plate (5) comprises a tail end door plate (50) arranged at the farthest end relative to the shutter door plate (3) and at least one intermediate door plate (51) arranged between the tail end door plate (50) and the shutter door plate (3), one side of the intermediate door plate (51) facing the shutter door plate (3) is provided with a secondary locking hook (11), the other side is provided with a main locking hook (10), one side of the tail end door plate (50) facing the intermediate door plate (51) is provided with the secondary locking hook (11), the secondary locking hook (11) at the upper end of the intermediate door plate (51) adjacent to the shutter door plate (3) is interlocked with the main locking hook (10) of the shutter door plate (3), the main lock hook (10) of the middle door panel (51) is hooked and interlocked with the auxiliary lock hook (11) of the adjacent middle door panel (51) or the tail end door panel (50); slow-speed door link plate (6) contain middle link plate (60) of being connected with middle door plant (51) and tail end link plate (61) of being connected with tail end door plant (50), still be equipped with main interlocking board (9) on middle link plate (60), vice interlocking board (8) on main interlocking board (9) of middle link plate (60) and the driving plate (7) that link plate (61) are connected in the middle of adjacent link plate (60) or tail end form the interlocking structure that can loosen and take off.
3. The fast and slow door interlocking system according to claim 1 or 2, characterized in that a transmission mechanism is arranged on the transmission plate (7), the transmission mechanism comprises transmission pulleys (12) which are rotatably mounted on the transmission plate (7) in pairs, a steel wire rope (13) which is connected and matched with the transmission pulleys (12), a fixer (14) which is fixedly connected with the frame (1) and a rope head frame (90) which is fixedly connected with the shutter hanging plate (4) and the steel wire rope (13) respectively, and the fixer (14) is fixedly connected with the steel wire rope (13).
4. The fast and slow door interlocking system as claimed in claim 1 or 2, wherein the shutter door panel (3) and the slow door panel (5) are both metal door panels, and the main latch hook (10) and the auxiliary latch hook (11) are both metal plate bending structures on the side edges of the metal door panels.
5. A system according to claim 1 or 2, wherein the primary latch hook (10) is a gusset fixed to the side of the shutter door panel (3), and when the slow door panel (5) comprises the intermediate door panel (51), the primary latch hook (10) is a gusset fixed to the side of the shutter door panel (3) and the intermediate door panel (51).
6. The interlocking system of fast and slow doors according to claim 5, characterized in that the corner plate is provided with three bends to form a main hook (10) comprising a fixed plate (100), an extension plate (101), a bottom plate (102) and a hook-back plate (103), and the hook-back plate (103), the extension plate (101) and the bottom plate (102) form a groove for accommodating the secondary hook (11).
7. The system as claimed in claim 3, wherein the head frame (90) is part of the main interlocking plate (9), and the main interlocking plate (9) comprises the head frame (90) arranged at the upper part, a buckle plate (91) arranged at the middle part and a connecting plate (92) arranged at the lower part.
8. The interlocking system of fast and slow doors according to claim 1 or 2, characterized in that the cross section of the secondary interlocking plate (8) is L-shaped, and comprises a mounting plate (80) connected with the transmission plate (7) and a locking plate (81) hooked with the primary interlocking plate (9), and the side of the secondary interlocking plate (8) is provided with a locking groove (82) matched with the primary interlocking plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210150819.0A CN114538255A (en) | 2022-02-18 | 2022-02-18 | Fast and slow door interlocking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210150819.0A CN114538255A (en) | 2022-02-18 | 2022-02-18 | Fast and slow door interlocking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114538255A true CN114538255A (en) | 2022-05-27 |
Family
ID=81674650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210150819.0A Pending CN114538255A (en) | 2022-02-18 | 2022-02-18 | Fast and slow door interlocking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114538255A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10167636A (en) * | 1996-12-10 | 1998-06-23 | Mitsubishi Denki Bill Techno Service Kk | Single sliding elevator door for landing |
| JPH1160119A (en) * | 1997-08-11 | 1999-03-02 | Mitsubishi Electric Corp | Elevator door device |
| US20110147132A1 (en) * | 2009-12-22 | 2011-06-23 | Spiess Peter A | Elevator door system |
| CN203064973U (en) * | 2012-12-19 | 2013-07-17 | 四川美奥电梯股份有限公司 | Elevator landing door interlocking device |
| CN204173732U (en) * | 2014-09-18 | 2015-02-25 | 四川美奥斯通科技股份有限公司 | Point two-fold layer door gear in one |
| JP2015131729A (en) * | 2013-12-13 | 2015-07-23 | フジテック株式会社 | Door control system of elevator |
| CN204873369U (en) * | 2015-08-04 | 2015-12-16 | 上海贝思特门机有限公司 | Door plant interlocking elevator door motor is hung to crashproof |
| CN206927449U (en) * | 2017-07-28 | 2018-01-26 | 森赫电梯股份有限公司 | fireproof elevator layer door |
| CN207375554U (en) * | 2017-09-30 | 2018-05-18 | 上海江菱机电有限公司 | A kind of Cargo Lift two-fold door anti-derail unit |
| CN108584638A (en) * | 2018-05-14 | 2018-09-28 | 南通中尧特雷卡电梯产品有限公司 | A kind of left slow door skateboard component of door machine |
| CN215364424U (en) * | 2021-05-17 | 2021-12-31 | 宁波申菱机电科技股份有限公司 | Well space is little and divide two folding layer door in steady operation and account for |
-
2022
- 2022-02-18 CN CN202210150819.0A patent/CN114538255A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10167636A (en) * | 1996-12-10 | 1998-06-23 | Mitsubishi Denki Bill Techno Service Kk | Single sliding elevator door for landing |
| JPH1160119A (en) * | 1997-08-11 | 1999-03-02 | Mitsubishi Electric Corp | Elevator door device |
| US20110147132A1 (en) * | 2009-12-22 | 2011-06-23 | Spiess Peter A | Elevator door system |
| CN203064973U (en) * | 2012-12-19 | 2013-07-17 | 四川美奥电梯股份有限公司 | Elevator landing door interlocking device |
| JP2015131729A (en) * | 2013-12-13 | 2015-07-23 | フジテック株式会社 | Door control system of elevator |
| CN204173732U (en) * | 2014-09-18 | 2015-02-25 | 四川美奥斯通科技股份有限公司 | Point two-fold layer door gear in one |
| CN204873369U (en) * | 2015-08-04 | 2015-12-16 | 上海贝思特门机有限公司 | Door plant interlocking elevator door motor is hung to crashproof |
| CN206927449U (en) * | 2017-07-28 | 2018-01-26 | 森赫电梯股份有限公司 | fireproof elevator layer door |
| CN207375554U (en) * | 2017-09-30 | 2018-05-18 | 上海江菱机电有限公司 | A kind of Cargo Lift two-fold door anti-derail unit |
| CN108584638A (en) * | 2018-05-14 | 2018-09-28 | 南通中尧特雷卡电梯产品有限公司 | A kind of left slow door skateboard component of door machine |
| CN215364424U (en) * | 2021-05-17 | 2021-12-31 | 宁波申菱机电科技股份有限公司 | Well space is little and divide two folding layer door in steady operation and account for |
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Application publication date: 20220527 |