CN107814300A - A kind of the hall door erecting device and its construction technology of exterior wall power-up ladder - Google Patents
A kind of the hall door erecting device and its construction technology of exterior wall power-up ladder Download PDFInfo
- Publication number
- CN107814300A CN107814300A CN201711260251.3A CN201711260251A CN107814300A CN 107814300 A CN107814300 A CN 107814300A CN 201711260251 A CN201711260251 A CN 201711260251A CN 107814300 A CN107814300 A CN 107814300A
- Authority
- CN
- China
- Prior art keywords
- crossbeam
- hall door
- sill
- door plate
- exterior wall
- Prior art date
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims description 11
- 238000005516 engineering process Methods 0.000 title claims description 9
- 238000009434 installation Methods 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000002787 reinforcement Effects 0.000 claims description 11
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- B66B13/30—Constructional features of doors or gates
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
Landscapes
- Elevator Door Apparatuses (AREA)
Abstract
The invention discloses a kind of hall door erecting device of exterior wall power-up ladder, including hall door plate, the upper and lower ends of the hall door plate are connected with crossbeam, crossbeam is fixedly connected with wall, crossbeam is also associated with vertical column square tube and door pocket, the vertical column square tube is fixedly connected with hoistway, and the door pocket is connected with button box；The door pocket is connected with conductive cableties, and button box connects electric life controller by conductive cableties；The upper end of hall door plate passes through sill connecting cross beam by idler wheel mechanism connecting cross beam, the lower end of hall door plate；Sill is provided with the chute for housing the slip of hall door plate.Hall door plate and door pocket connect vertical column square tube by crossbeam, and the upper end and lower end of hall door plate are flexibly connected with crossbeam, and exterior wall adds that the relatively simple firm, installation of hoistway door device is easy and the time is shorter.
Description
Technical field
The present invention relates to exterior wall plus peace elevator hoistways steel structure part, the hall door that ladder is powered up more particularly, to a kind of exterior wall is installed
Device and its construction technology.
Background technology
Architecture storey in the past there are many multi-story, and on old man's residential building, aspect Shang Luoqu streets, need to not installed additional outside wall
Elevator solves house problem concerning life.But existing hoistway steel structure is complex, difficulty of construction is high, influences resident living, outer
The problems such as wall engineering time is long.
Thus, it is necessary to propose that a kind of exterior wall installs the hall door erecting device of elevator additional, reduced from hall door fixing link outer
Wall elevator difficulty of construction and time.
The content of the invention
For overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of hall door erecting device of exterior wall power-up ladder
And its construction technology, solve the problems, such as that exterior wall adds that hoistway door device is complex, installation is difficult and the time is longer.
The present invention is to solve the technical scheme that its technical problem uses to be：
A kind of hall door erecting device of exterior wall power-up ladder, including hall door plate, the upper and lower ends of the hall door plate are flexibly connected
There is crossbeam, crossbeam is fixedly connected with wall, and crossbeam is also associated with vertical column square tube and door pocket, and the vertical column square tube is fixed with hoistway to be connected
Connect, the door pocket is connected with button box；The door pocket is connected with conductive cableties, and button box connects elevator controlling by conductive cableties
Device；The upper end of hall door plate passes through sill connecting cross beam by idler wheel mechanism connecting cross beam, the lower end of hall door plate；Sill is provided with use
In the chute that accommodating hall door plate slides.
According to another embodiment of the present invention, further have, the crossbeam is channel-section steel, and the opening of crossbeam deviates from
Wall.
According to another embodiment of the present invention, further have, the crossbeam is consolidated by foundation bolt and wall
Fixed connection, the foundation bolt is through-wall bolt or draw explosion bolt.
According to another embodiment of the present invention, further have, being provided with closing between the sill and wall steps on
Plate, closing in pedal are connected with sill.
According to another embodiment of the present invention, further have, the closing in pedal is connected with reinforcement, closes up
Pedal is connected by reinforcement with crossbeam, reinforcement connection sill.
According to another embodiment of the present invention, further have, the idler wheel mechanism includes what is be connected with crossbeam
Wheel track and roller, roller roll the upper and lower ends for being connected to wheel track.
According to another embodiment of the present invention, further have, the wheel track snaps connection with roller, wheel track with
Roller is snapped connection for stopping that roller deviates along during Wheel/rail toward both sides.
According to another embodiment of the present invention, further have, the hall door plate, which is provided with, to be contained in chute
Clamp portion, the both sides in clamp portion open up several shrinkage pools of left and right, and shrinkage pool is equipped with elastic component and ball, and shrinkage pool is threaded with
Encapsulate end cap；Ball protrudes out end cap and abuts the side wall of chute, and elastic component both ends abut ball and shrinkage pool bottom respectively.
A kind of construction technology of the hall door erecting device of exterior wall power-up ladder, comprises the following steps：
Step a, vertical column square tube installation, hoistway are built and built-in fitting and vertical column square tube are installed on hoistway；
Step b, crossbeam installation, crossbeam are channel-section steel, and crossbeam connection vertical column square tube, crossbeam is fixedly connected with wall and opening is carried on the back
From metope；
Step c, sill are installed, and sill is installed on crossbeam, and the sill is used for the lower end for assembling hall door plate, and sill is provided with
The first neck, the first neck for connecting cross beam are used for clamping nut or bolt head, and the chute of sill is upward and for filling
With hall door plate；
Step d, the installation of hall door plate, hall door plate lower end are arranged in sill chute, and hall door plate upper end is connected by idler wheel mechanism
It is connected to crossbeam；
Step e, door pocket installation, door pocket upper end are connected by door head scraper plate with crossbeam, and door pocket column passes through fixed code and wall
Wall is fixedly connected；
Step f, accessory are installed, and button box is installed on door pocket column, and button box passes through conductive cableties and connects controller.
According to another embodiment of the present invention, further having, the step c also includes closing in pedal and installed,
Closing in pedal connection strengthening rib, then closing in pedal be connected with crossbeam.
A kind of hall door erecting device for exterior wall power-up ladder that the present invention uses, has the advantages that：Hall door plate and door
By crossbeam connection vertical column square tube, the upper end and lower end of hall door plate be flexibly connected set with crossbeam, exterior wall add hoistway door device compared with
For it is simple firmly, installation easily and the time it is shorter.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is partial enlarged drawing at Fig. 1 of the present invention A；
Fig. 3 is partial enlarged drawing at Fig. 1 of the present invention B；
Fig. 4 is partial enlarged drawing at Fig. 1 of the present invention C；
Fig. 5 is the structural representation of sill of the present invention；
Fig. 6 is the structural representation of closing in pedal of the present invention；
Fig. 7 is the structural representation of reinforcement of the present invention；
Fig. 8 is the structural representation of idler wheel mechanism of the present invention.
Embodiment
Below in conjunction with accompanying drawing and example, the invention will be further described.
As shown in Figures 1 to 8, the hall door erecting device of a kind of exterior wall of the invention power-up ladder, including hall door plate 1, it is described
The upper and lower ends of hall door plate 1 are connected with crossbeam 2, and crossbeam 2 is fixedly connected with wall 3, and crossbeam 2 is also associated with vertical column square tube 4
And door pocket 5, the vertical column square tube 4 are fixedly connected with hoistway, the door pocket 5 is connected with button box 6；The door pocket 5, which is connected with, leads
Electric wire buckles 7, and button box 6 connects electric life controller by conductive cableties 7；The upper end of hall door plate 1 passes through the connecting cross beam of idler wheel mechanism 8
2, the lower end of hall door plate 1 passes through the connecting cross beam 2 of sill 9；Sill 9 is provided with the chute 9a for housing the slip of hall door plate 1.
In elevator integrated model, vertical column square tube 4 is erect and is fixedly connected with hoistway, and multiple elevator car door systems are arranged on vertical
Locus between post square tube 4.Crossbeam 2 is fixedly connected by vertical column square tube 4 with hoistway, crossbeam 2 is also fixed with wall 3 and connected
Connect, the upper end and lower end of hall door plate 1 are flexibly connected with crossbeam 2, ensure the installation strength of hall door plate 1.The hall door plate 1
Upper end is flexibly connected by idler wheel mechanism 8 with crossbeam 2, the lower end of hall door plate 1 is flexibly connected by chute 9a structures with crossbeam 2,
The stable movement of hall door plate 1, it is connected firmly.
The crossbeam 2 is channel-section steel, and the opening of crossbeam 2 deviates from wall 3.The crossbeam 2 of channel-section steel pattern has larger warping resistance
Ability；The crossbeam 2 and opening of channel-section steel pattern deviate from wall 3, and the bottom surface and side of channel-section steel pass through bolt and wall 3, vertical column square tube
4th, when sill 9 etc. connects, channel-section steel opening has operating space, is easy to the installation of elevator car door system, saves the set-up time.
The crossbeam 2 is fixedly connected by foundation bolt 10 with wall 3, and the foundation bolt 10 is through-wall bolt or drawn quick-fried
Bolt.Specifically, the crossbeam 2 is fixedly connected by bolt with positioning angle bar, positioning angle bar passes through foundation bolt 10 and wall 3
It is fixedly connected.Crossbeam 2 is connected securely to wall 3 by positioning angle bar location and installation and by foundation bolt 10.
As shown in figure 5, setting sill 9 and its given shape, ensure that sill 9 is conveniently connected to crossbeam 2, ensures the side of sill 9
Just connect hall door plate 1, ensure that sill 9 is conveniently connected to closing in pedal 11.Specifically, the sill 9 is provided with for connecting horizontal stroke
First neck 9c, the first neck 9c of beam 2 is configured to T-shaped, the hexagon-head of snapping nut or bolt hexagon-head
For interior hexagonal or outer-hexagonal.The sill 9 is provided with the second neck 9b, the second neck 9b setting for connecting closing in pedal 11
To be capable of the T-shaped of snapping nut or bolt hexagon-head, the hexagon-head is interior hexagonal or outer-hexagonal.
As shown in figure 4, being provided with closing in pedal 11 between the sill 9 and wall 3, closing in pedal 11 is connected with sill 9.Institute
State closing in pedal 11 to be used to block the gap between sill 9 and wall 3, ensure safety.
As shown in figure 4, the closing in pedal 11 is connected with reinforcement 12, closing in pedal 11 passes through reinforcement 12 and crossbeam 2
Connection, reinforcement 12 connect sill 9.Reinforcement 12 is set, ensures the bonding strength between sill 9 and crossbeam 2, ensure closing in pedal
11 fixing intensity.The both ends of the closing in pedal 11 are connected with door pocket 5.
As shown in figure 8, the idler wheel mechanism 8 includes the wheel track 8a and roller 8b being connected with crossbeam 2, roller 8b rolls connection
In wheel track 8a upper and lower ends；The wheel track 8a is fixedly connected with crossbeam 2, and roller 8b is connected by support plate with hall door plate 1.It is described
Wheel track 8a snaps connection with roller 8b, wheel track 8a and roller 8b snap connection for stop roller 8b along wheel track 8a roll when it is past
Deviate both sides.
Roller 8b could be arranged to wheel track 8a：The wheel track 8a is provided with convex portion, and the cylinder of the roller 8b is provided with
Recess, wheel track 8a convex portion and roller 8b recess snap connection and be used to stopping roller 8b along wheel track 8a roll when toward both sides
Deviate.Roller 8b could be arranged to wheel track 8a：The wheel track 8a is provided with recess, and the cylinder of the roller 8b is provided with convex
Portion, the convex portion of wheel track 8a recess and roller 8b snap connection.
As shown in figure 4, the hall door plate 1 is provided with the clamp portion being contained in chute 9a, the both sides in clamp portion open up a left side
Several right shrinkage pools, shrinkage pool are equipped with elastic component and ball, and shrinkage pool is threaded with encapsulation end cap；Ball protrudes out end cap, simultaneously
Chute 9a side wall is abutted, elastic component both ends abut ball and shrinkage pool bottom respectively.The setting of hall door plate 1 and its peripheral structure
In, it is impossible to hall door plate 1 is completely secured necessarily vertically, i.e., the upper end of hall door plate 1 is hung by idler wheel mechanism 8, under hall door plate 1
End can abut chute 9a both ends by elastic construction, ensure the more vertical placement of hall door plate 1 and will not be with chute 9a's
The larger friction of side wall, hall door plate 1 have preferable activity.
The upper end of the door pocket 5 ensures that door pocket 5 is provided with certain flexibility by elastic panel connecting cross beam 2；Elevator acts
In, the bradyseism of door pocket 5 is good, can also pass through elastic panel preferably location and installation.
A kind of construction technology of the hall door erecting device of exterior wall power-up ladder, comprises the following steps：
Step a, vertical column square tube 4 are installed, and hoistway is built and built-in fitting and vertical column square tube 4 are installed on hoistway；
Step b, crossbeam 2 are installed, and crossbeam 2 is channel-section steel, and crossbeam 2 connects vertical column square tube 4, crossbeam 2 be fixedly connected wall 3 and
Opening deviates from metope；
Step c, sill 9 are installed, and sill 9 is installed on crossbeam 2, and the sill 9 is used for the lower end for assembling hall door plate 1, sill 9
It is provided with the first neck 9c for connecting cross beam 2, the first neck 9c is used for clamping nut or bolt head, the chute of sill 9
Upward and for assembling hall door plate 1；
Step d, hall door plate 1 are installed, and the lower end of hall door plate 1 is arranged in the chute 9a of sill 9, and the upper end of hall door plate 1 passes through roller
Mechanism 8 is connected with crossbeam 2；
Step e, door pocket 5 are installed, and the upper end of door pocket 5 is connected by door head scraper plate with crossbeam 2, door pocket column by fixed code with
Wall 3 is fixedly connected；
Step f, accessory are installed, and button box 6 is installed on door pocket column, and button box 6 passes through conductive cableties 7 and connects controller.
Crossbeam 2 is fixedly connected by foundation bolt 10 with wall 3, and foundation bolt 10 is through-wall bolt or draw explosion bolt.
The step c also installs including closing in pedal 11, the connection strengthening rib 12 of closing in pedal 11, then closing in pedal 11 with
Crossbeam 2 connects.
It is described above, it is not limitation of the present invention, the present invention is also not limited to above-mentioned embodiment, as long as at this
The variations, modifications, additions or substitutions made in the essential scope of invention, so as to reach the technique effect of the present invention, it should all belong to
In protection scope of the present invention.
Claims (10)
- A kind of 1. hall door erecting device of exterior wall power-up ladder, it is characterised in that：Including hall door plate (1), the hall door plate (1) it is upper Lower both ends are connected with crossbeam (2), and crossbeam (2) is fixedly connected with wall (3), crossbeam (2) be also associated with vertical column square tube (4) and Door pocket (5), the vertical column square tube (4) are fixedly connected with hoistway, and the door pocket (5) is connected with button box (6)；The door pocket (5) Conductive cableties (7) are connected with, button box (6) connects electric life controller by conductive cableties (7)；The upper end of hall door plate (1) passes through Idler wheel mechanism (8) connecting cross beam (2), the lower end of hall door plate (1) pass through sill (9) connecting cross beam (2)；Sill (9) is provided with use In the chute (9a) that accommodating hall door plate (1) slides.
- A kind of 2. hall door erecting device of exterior wall power-up ladder according to claim 1, it is characterised in that：The crossbeam (2) For channel-section steel, the opening of crossbeam (2) deviates from wall (3).
- 3. the hall door erecting device of ladder is powered up according to a kind of any described exterior wall of claim 1 and 2, it is characterised in that：It is described Crossbeam (2) is fixedly connected by foundation bolt (10) with wall (3), and the foundation bolt (10) is through-wall bolt or draws quick-fried spiral shell Bolt.
- A kind of 4. hall door erecting device of exterior wall power-up ladder according to claim 1, it is characterised in that：The sill (9) And closing in pedal (11) is provided between wall (3), closing in pedal (11) is connected with sill (9).
- A kind of 5. hall door erecting device of exterior wall power-up ladder according to claim 4, it is characterised in that：The closing in pedal (11) reinforcement (12) is connected with, closing in pedal (11) is connected by reinforcement (12) with crossbeam (2), reinforcement (12) connection ground Bank (9).
- A kind of 6. hall door erecting device of exterior wall power-up ladder according to claim 1, it is characterised in that：The idler wheel mechanism (8) wheel track (8a) and roller (8b) that be connecteds with crossbeam (2) are included, roller (8b) rolling is connected to up and down the two of wheel track (8a) End.
- A kind of 7. hall door erecting device of exterior wall power-up ladder according to claim 6, it is characterised in that：The wheel track (8a) Snapped connection with roller (8b), wheel track (8a) is snapped connection for stopping that roller (8b) rolls along wheel track (8a) with roller (8b) When toward both sides deviate.
- A kind of 8. hall door erecting device of exterior wall power-up ladder according to claim 1, it is characterised in that：The hall door plate (1) the clamp portion being contained in chute (9a) is provided with, the both sides in clamp portion open up several shrinkage pools of left and right, and shrinkage pool is equipped with bullet Property part and ball, shrinkage pool are threaded with encapsulation end cap；Ball protrudes out end cap and abuts chute (9a) side wall, elastic component Both ends abut ball and shrinkage pool bottom respectively.
- 9. a kind of construction technology of the hall door erecting device of exterior wall power-up ladder, it is characterised in that comprise the following steps：Step a, vertical column square tube (4) installation, hoistway are built and built-in fitting and vertical column square tube (4) are installed on hoistway；Step b, crossbeam (2) installation, crossbeam (2) are channel-section steel, and crossbeam (2) connects vertical column square tube (4), and crossbeam (2) is fixedly connected with wall Wall (3) and opening deviate from metope；Step c, sill (9) are installed, and sill (9) is installed on crossbeam (2), and the sill (9) is used to assemble under hall door plate (1) End, sill (9) is provided with the first neck (9c) for connecting cross beam (2), the first neck (9c) is used for clamping nut or bolt Head, the chute of sill (9) is upward and for assembling hall door plate (1)；Step d, hall door plate (1) installation, hall door plate (1) lower end are arranged in sill (9) chute (9a), and hall door plate (1) upper end leads to Cross idler wheel mechanism (8) and be connected with crossbeam (2)；Step e, door pocket (5) installation, door pocket (5) upper end are connected by door head scraper plate with crossbeam (2), and door pocket column passes through fixed code It is fixedly connected with wall (3)；Step f, accessory are installed, and button box (6) is installed on door pocket column, and button box (6) passes through conductive cableties (7) and connects control Device.
- A kind of 10. construction technology of the hall door erecting device of exterior wall power-up ladder according to claim 9, it is characterised in that The step c, in addition to closing in pedal (11) are installed, closing in pedal (11) connection strengthening rib (12), then closing in pedal (11) It is connected with crossbeam (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711260251.3A CN107814300A (en) | 2017-12-04 | 2017-12-04 | A kind of the hall door erecting device and its construction technology of exterior wall power-up ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711260251.3A CN107814300A (en) | 2017-12-04 | 2017-12-04 | A kind of the hall door erecting device and its construction technology of exterior wall power-up ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107814300A true CN107814300A (en) | 2018-03-20 |
Family
ID=61605078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711260251.3A Pending CN107814300A (en) | 2017-12-04 | 2017-12-04 | A kind of the hall door erecting device and its construction technology of exterior wall power-up ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107814300A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060054419A1 (en) * | 2002-09-03 | 2006-03-16 | Friedman Harold S | Elevator entrance sill structure and installation method |
| JP2007099453A (en) * | 2005-10-04 | 2007-04-19 | Mitsubishi Electric Corp | Sill pole device for elevator landing |
| CN201201842Y (en) * | 2008-03-06 | 2009-03-04 | 康力电梯股份有限公司 | Elevator calling board arrangement structure |
| JP2010070340A (en) * | 2008-09-19 | 2010-04-02 | Toshiba Elevator Co Ltd | Elevator entrance device |
| CN203372968U (en) * | 2013-08-01 | 2014-01-01 | 森赫电梯股份有限公司 | Narrow door jamb of passenger elevator |
| CN205873601U (en) * | 2016-08-11 | 2017-01-11 | 山东富士制御电梯有限公司 | Square pipe steel structure well of adjustable gate position |
| CN206318599U (en) * | 2016-12-07 | 2017-07-11 | 山东华邦建设集团有限公司 | A kind of power supply for construction stair shaft mouthful protective door device |
| CN207699000U (en) * | 2017-12-04 | 2018-08-07 | 三洋电梯(珠海)有限公司 | A kind of hall door mounting device of exterior wall power-up ladder |
-
2017
- 2017-12-04 CN CN201711260251.3A patent/CN107814300A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060054419A1 (en) * | 2002-09-03 | 2006-03-16 | Friedman Harold S | Elevator entrance sill structure and installation method |
| JP2007099453A (en) * | 2005-10-04 | 2007-04-19 | Mitsubishi Electric Corp | Sill pole device for elevator landing |
| CN201201842Y (en) * | 2008-03-06 | 2009-03-04 | 康力电梯股份有限公司 | Elevator calling board arrangement structure |
| JP2010070340A (en) * | 2008-09-19 | 2010-04-02 | Toshiba Elevator Co Ltd | Elevator entrance device |
| CN203372968U (en) * | 2013-08-01 | 2014-01-01 | 森赫电梯股份有限公司 | Narrow door jamb of passenger elevator |
| CN205873601U (en) * | 2016-08-11 | 2017-01-11 | 山东富士制御电梯有限公司 | Square pipe steel structure well of adjustable gate position |
| CN206318599U (en) * | 2016-12-07 | 2017-07-11 | 山东华邦建设集团有限公司 | A kind of power supply for construction stair shaft mouthful protective door device |
| CN207699000U (en) * | 2017-12-04 | 2018-08-07 | 三洋电梯(珠海)有限公司 | A kind of hall door mounting device of exterior wall power-up ladder |
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Application publication date: 20180320 |