CN111910943A - Flat-floor-to-home type additional elevator for existing residence and construction method thereof - Google Patents
Flat-floor-to-home type additional elevator for existing residence and construction method thereof Download PDFInfo
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- CN111910943A CN111910943A CN202010684986.4A CN202010684986A CN111910943A CN 111910943 A CN111910943 A CN 111910943A CN 202010684986 A CN202010684986 A CN 202010684986A CN 111910943 A CN111910943 A CN 111910943A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0266—Enlarging
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H1/00—Buildings or groups of buildings for dwelling or office purposes; General layout, e.g. modular co-ordination or staggered storeys
- E04H1/02—Dwelling houses; Buildings for temporary habitation, e.g. summer houses
- E04H1/04—Apartment houses arranged in two or more levels
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F2011/0203—Miscellaneous features of stairways not otherwise provided for
- E04F2011/0205—Stairways characterised by the use of specific materials for the supporting structure of the treads
- E04F2011/0209—Stairways characterised by the use of specific materials for the supporting structure of the treads mainly of metal
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
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- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
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Abstract
The invention discloses a flat floor entrance type additional elevator of an existing house, wherein a lower access opening and an upper access opening are respectively formed in a rest platform of the existing house and corresponding retaining walls of two or more floors of the existing house, a half-side rest platform connected with the lower ends of an upper stair section and an upper stair section in a double-stair is cut off, the upper stair section is additionally arranged outside the retaining wall where the corresponding floor rest platform is located in a turning manner from the lower access opening, the upper end and the lower end of the upper stair section are respectively connected with the side surface of a horizontal corridor and the rest platform, one end of the horizontal corridor is connected with the entrance platform, the other end of the horizontal corridor is connected with the additional elevator, and elevator taking personnel enter the house through the flat floor of the horizontal corridor. The horizontal corridor and the added upper stair sections adopt prefabricated components, so that the construction period can be shortened, the horizontal corridor, the added upper stair sections and the rest lower stair sections after the original stairs are cut form a new fire fighting channel, and the added elevator can realize flat floor entry at the original entry door through the horizontal corridor, so that the living requirements of different people are met.
Description
Technical Field
The invention belongs to the technical field of elevator installation, and particularly relates to a flat-floor-to-home elevator installation method for an existing house and a construction method thereof.
Background
The existing multi-storey houses are mostly not provided with elevators, and with the coming of an aging society, the requirements of the old people on living and traveling cannot be met, so that the old people are imperative to be reformed. The old house of current multilayer installs the elevator additional and mainly has two kinds of schemes, one kind is to install the elevator additional and is connected with original house in stairwell double-race stair half space department, goes into the family through a bench of upwards or walking downwards, and this kind of scheme is less to original house transformation influence, but still need walk a bench of going through installing the elevator additional to family, this to the old person of walking inconvenience and the crowd that needs to rely on the wheelchair trip, still do not thoroughly solve the inconvenience that stair brought about. The other scheme is that in order to realize direct flat-floor entry without climbing stairs, an elevator is additionally arranged and the elevator is selected to enter at a kitchen or a balcony or the like, and the scheme has great influence on the original residence, particularly indoor layout and is difficult to accept by residents.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides an existing residential flat floor entrance type additional elevator and a construction method thereof, wherein the existing residential flat floor entrance type additional elevator does not change the entrance mode of residents from an original gate, and can select two entrance modes of elevator flat floor entrance and stair entrance.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows: a flat floor entrance type additional elevator for an existing house comprises the existing house, the additional elevator, an upper stair section and a horizontal corridor, wherein a rest platform of the existing house and corresponding retaining walls of two or more floors of entrance platforms are respectively provided with a lower access opening and an upper access opening, a half-side rest platform connected with the lower ends of the upper stair section and the upper stair section in the double-running stairs of the existing house is cut off, the upper stair section is arranged outside the retaining wall where the rest platform of the corresponding floor is located in a turning mode from the lower access opening, the lower end of the upper stair section is connected with the rest platform of the floor, the upper stair section and the remaining half-side rest platform are arranged between adjacent floors to form a single-running stair, the upper end of the upper stair section is fixed on the side of the horizontal corridor, one end of the horizontal corridor penetrates through the upper access opening to be connected with the entrance platform, the other end of the horizontal corridor is connected with the additional elevator, and the floors where the platforms added with the elevator are located are arranged at the height positions of the floors of the entrance platforms, the personnel taking the elevator enter the house through the horizontal corridor.
Further, still include support piece, support piece is vertical to be fixed in ground, and the relative side of rest platform and horizontal vestibule is connected respectively to support piece both sides.
Further, the upper stair sections and the horizontal corridor are prefabricated parts.
Further, the upper stair sections and the horizontal corridor are both made of steel structures, a layer of fine aggregate concrete is paved on the surface of each steel structure, and the thickness of the fine aggregate concrete is 3-5 cm.
Furthermore, the horizontal corridor is an ￢ -shaped corridor, the front end and the rear end of the ￢ -shaped corridor are respectively connected with an additionally-installed elevator and an entrance platform, and the bent part of the ￢ -shaped corridor is connected with the upper end of an additionally-installed stair section and used as a waiting hall.
The invention also discloses a construction method for adding the elevator to the existing residence in a flat-floor-to-home manner, which comprises the following steps:
s1, prefabricating and forming an upper stair section and a horizontal corridor which meet the requirements of stress and required size in a factory;
s2, respectively arranging a lower access opening and an upper access opening on the corresponding retaining wall of each layer of rest platform and two or more layers of service platforms;
s3, building and installing an elevator at a proper position outside the existing house according to related design and construction specifications including the sizes of an upper stair section and a horizontal corridor;
s4, the front end and the rear end of the horizontal corridor are respectively connected with an additional elevator and an entrance platform, one end of an additional upper staircase section is connected with a rest platform, the other end of the additional upper staircase section passes through a lower passage and is fixed on the side surface of the horizontal corridor, a parking layer of the additional elevator is arranged at the height of each layer of entrance platform, and elevator passengers pass through the horizontal corridor and enter the elevator through the upper passage;
s5, dismantling an upper stair section and a half-side rest platform which are directly connected with the lower end of the upper stair section in the original dual-run stair in the existing house;
s6, hoisting the supporting piece to the space between the rest platform and the horizontal corridor, wherein the supporting piece is vertically fixed on the ground, and the two sides of the supporting piece are respectively and fixedly supported on the opposite sides of the horizontal corridor and the rest platform.
Further, the front end and the rear end of the horizontal corridor are respectively hinged with a home-entering platform and an additional elevator, and the upper end and the lower end of the upper stair section are respectively hinged with a rest platform and the horizontal corridor.
Further, go into before outer terminal surface of platform, the outer terminal surface of rest platform and horizontal vestibule, back, right-hand member face implant chemical crab-bolt or expansion bolts through punching respectively, the front and back end of horizontal vestibule bolted connection installs the elevator additional and the platform of registering one's residence respectively, install the last lower extreme of stair section respectively bolted connection horizontal vestibule right-hand member face and the outer terminal surface of rest platform additional, horizontal vestibule and platform of registering one's residence and install the elevator junction additional, install stair section and horizontal vestibule and rest platform junction additional and all add rubber shock-absorbing strip.
Furthermore, guard rails are installed on the horizontal corridor and the two sides of the upper stair sections.
Further, support piece adopts steel construction cow leg post, horizontal vestibule and half space's opposite flank punches respectively and implants chemical crab-bolt or expansion bolts, and the installation steel sheet carries out bolted connection or welding through steel sheet and steel construction cow leg post, support piece fixed connection half space and horizontal vestibule.
The invention has the following beneficial effects:
1) according to the invention, the part of the upstairs section on the staircase room of the existing house is cut off, and the horizontal corridor and the upstairs section are additionally arranged between the existing house and the additionally arranged elevator, so that the additionally arranged elevator can realize the flat-layer entrance of the original entrance door, and the traveling difficulty of the old and people who travel by virtue of wheelchairs is really solved;
2) the added upper stair section replaces the upper stair section of the original house, the horizontal corridor, the additional upper stair section and the remaining lower stair section after the original staircase is cut form a new fire fighting access, so that the 'life access' is effectively guaranteed to be smooth and unobstructed, and residents can select elevators to enter households on a flat floor or stairs to enter households, thereby meeting the living needs of different crowds;
3) the horizontal corridor that adds adopts prefabricated component with installing upstairs stair section additional, reduces the on-the-spot work load of house by a wide margin, and reduction of erection time reduces the influence to resident's life.
Drawings
FIG. 1 is a schematic view of an existing residential stairwell;
FIG. 2 is a schematic view of the upper stair section and rest platform cut-away portion of FIG. 1;
FIG. 3 is a schematic view of the attachment of an additional elevator to an existing home;
fig. 4 is a top view of the horizontal corridor, stairway, and added elevator connection of fig. 1.
Wherein the reference numerals are: the house comprises a house 1, a rest platform 1-1, an upper stair section 1-2, a lower stair section 1-3, an additional elevator 2, an additional upper stair section 3, a horizontal corridor 4 and a support piece 5.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
As shown in figures 1-4, the invention relates to a flat floor entrance type additional elevator of an existing house, which comprises an existing house 1 and an additional elevator 2, and also comprises an additional upper stair section 3, a horizontal corridor 4 and a support piece 5, wherein the additional upper stair section 3 and the horizontal corridor 4 are all prefabricated parts of steel structures, a layer of fine stone concrete is paved on the surface of the steel structures, the thickness of the fine stone concrete is 3-5 cm, a lower access opening and an upper access opening are respectively arranged on a retaining wall corresponding to a rest platform 1-1, two floors and more floors of the existing house 1, a half side rest platform 1-1 connected with the lower end of the upper stair section 1-2 in the double-run staircase of the existing house 1 is cut off (the cut-off part is a part shown as a square frame in figure 2), the additional upper stair section 3 is turned from the lower access opening to be arranged outside the retaining wall of the corresponding floor rest platform 1-1, the lower end of an upper stair section 3 is additionally arranged and connected with the rest platform 1-1, the upper stair section 3 is additionally arranged between adjacent floors, the rest platform 1-1 on the left half side and the rest platform 1-3 on the lower stair section are changed into a single-run stair, the upper end of the upper stair section 3 is additionally arranged and fixed on the side surface of a horizontal corridor 4, one end of the horizontal corridor 4 penetrates through an upper passage to be connected with an entrance platform, the other end of the horizontal corridor 4 is connected with an additional elevator 2, a parking layer additionally provided with the elevator 2 is arranged at the height of each floor entrance platform, elevator taking personnel penetrate through the upper passage through the horizontal corridor 4 to enter the entrance, a support member 5 is vertically fixed on the ground, the two sides of the support member 5 are respectively connected with the opposite side surfaces of the rest platform 1-1 and the horizontal corridor 4, and further stably supports each layer of the horizontal corridor 4 and the rest platform 1-1.
Wherein, support piece 5 adopts steel construction cow leg post, and horizontal vestibule 4 and rest platform 1-1's relative side are punched respectively and are implanted chemical crab-bolt or expansion bolts, and the installation steel sheet carries out bolted connection or welding through steel sheet and steel construction cow leg post, and support piece 5 fixed connection rest platform 1-1 and horizontal vestibule 4.
As shown in fig. 4, horizontal vestibule 4 is "￢" type vestibule, the preceding rear end of "￢" type vestibule is connected respectively and is installed elevator 2 and the platform of registering one's residence, the kink of "￢" type vestibule is connected with the upper end of installing upstairs section 3 additional, it uses to wait the ladder room, the user can wait the elevator here, can locate stairs from this simultaneously, for improving horizontal vestibule 4 and install upstairs section 3 additional safety in utilization, horizontal vestibule 4 can all install the rail guard with install upstairs section 3 additional both sides.
The front end and the rear end of the horizontal corridor 4 are respectively hinged with an entrance platform and an additional elevator 2, and the upper end and the lower end of the upper stair section 3 are respectively hinged with a rest platform 1-1 and the horizontal corridor 4.
Specifically, chemical anchor bolts or expansion bolts are implanted into the outer end face of the home-entry platform, the outer end face of the rest platform 1-1 and the front, rear and right end faces of the horizontal corridor 4 respectively through punching, the elevator 2 and the home-entry platform are additionally installed at the front and rear ends of the horizontal corridor 4 respectively through bolt connection, the upper end and the lower end of the upper stair section 3 are additionally installed and are respectively connected with the right end face of the horizontal corridor 4 and the outer end face of the rest platform 1-1 through bolt connection, and in order to reduce the influence of noise, rubber shock-absorbing strips are additionally arranged at the joints of the horizontal corridor 4, the home-entry platform, the elevator 2 and the upper stair section 3, the horizontal corridor 4 and the rest platform 1-1.
The construction method for adding the elevator in the existing residential flat floor entrance way comprises the following steps:
s1, prefabricating and forming the additional upper stair sections 3 and the horizontal corridor 4 meeting the stress and the required size in a factory;
s2, respectively arranging a lower access opening and an upper access opening on the corresponding retaining wall of each layer of rest platform 1-1 and the second and above home-entry platforms;
s3, building a conventional additional elevator 2 at a proper position outside the existing house 1 according to relevant design construction specifications including the sizes of the additional upper stair sections 3 and the horizontal corridor 4 as shown in figure 3;
s4, as shown in figures 3 and 4, the front end and the rear end of a horizontal corridor 4 are respectively connected with an elevator 2 and an entrance platform, one end of an upper stair section 3 is connected with a rest platform 1-1, the other end of the upper stair section passes through a lower access opening and is fixed on the side surface of the horizontal corridor 4, a parking layer added with the elevator 2 is arranged at the height of each floor entrance platform, and elevator taking personnel pass through the upper access opening through the horizontal corridor 4 to enter the house;
s5, removing the upper stair section 1-2 in the original double-track stair in the existing house 1 and the half-side rest platform 1-1 directly connected with the lower end of the upper stair section 1-2 (the cut part is the part shown by the square frame in figure 2).
S6, as shown in figures 3 and 4, hoisting the support piece 5 to the space between the rest half side rest platform 1-1 (the half side rest platform 1-1 directly connected with the lower stair section 1-3) and the horizontal corridor 4, wherein the support piece 5 is vertically fixed on the ground, and two sides of the support piece 5 are respectively and fixedly connected with the horizontal corridor 4 and the opposite side surfaces of the rest platform 1-1.
In step S1, if the guard rail originally provided on the retaining wall where each layer of the rest platform 1-1 of the existing house 1 is located is removed, the guard rail is directly removed without opening a lower passage.
Wherein, support piece 5 adopts steel construction cow leg post, and horizontal vestibule 4 and rest platform 1-1's relative side are punched respectively and are implanted chemical crab-bolt or expansion bolts, and the installation steel sheet carries out bolted connection or welding through steel sheet and steel construction cow leg post, and support piece 5 fixed support rest platform 1-1 and horizontal vestibule 4.
In step S4, the front and rear ends of the horizontal corridor 4 are respectively hinged to the entrance platform and the elevator 2, the upper and lower ends of the upper corridor 3 are respectively hinged to the rest platform 1-1 and the horizontal corridor 4, specifically, the outer end surface of the entrance platform, the outer end surface of the rest platform 1-1 and the front, rear and right end surfaces of the horizontal corridor 4 are respectively implanted with chemical anchor bolts or expansion bolts through punching, the front and rear ends of the horizontal corridor 4 are respectively bolted to install the elevator 2 and the entrance platform, the upper and lower ends of the upper corridor 3 are respectively bolted to the right end surface of the horizontal corridor 4 and the outer end surface of the rest platform 1-1, and rubber shock-absorbing strips are added at the joints between the horizontal corridor 4 and the entrance platform and the elevator 2, and between the upper corridor 3 and the horizontal corridor 4 and the rest platform 1-1 to reduce the influence of noise
Preferably, as shown in fig. 4, the horizontal corridor 4 is an "￢" type corridor, the front end and the rear end of the "￢" type corridor are respectively connected with the additionally-installed elevator 2 and the landing platform, the bent part of the "￢" type corridor is connected with the upper end of the additionally-installed stair section 3 to serve as a waiting hall, and protective guards are installed on two sides of the horizontal corridor 4 and the additionally-installed stair section 3 to improve the use safety of the horizontal corridor 4 and the additionally-installed stair section 3.
Adopt above-mentioned construction method installation existing house flat floor to enter one's residence formula to install the elevator additional, the horizontal vestibule that adds adopts prefabricated component with installing the stair section of going up additional, reduce the on-the-spot work load of house by a wide margin, the reduction of erection time, reduce the influence to resident's life, add the horizontal vestibule and install the stair section additional between existing house and installing the elevator additional, install the stair section of going up additional and replace original stair section of going up, the horizontal vestibule, install the stair section of going up additional and form new fire control passageway with the remaining stair section of going down after original stair excision, install the elevator additional and can realize entering one's residence at original entry flat floor through the horizontal vestibule, the resident family can select elevator flat floor to enter one's residence or stair to enter one's residence, satisfy the needs of different crowds life.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (10)
1. The flat floor entrance type additional elevator of the existing house comprises the existing house (1), an additional elevator (2) and an additional upper stair section (3) and a horizontal corridor (4), wherein a lower access opening and an upper access opening are respectively formed in corresponding retaining walls of a rest platform (1-1) and two or more floors of the existing house (1) and the corresponding retaining walls of the platforms, the upper stair section (1-2) in the double-running stair and the half-side rest platform (1-1) connected with the lower end of the upper stair section (1-2) are cut off, the additional upper stair section (3) is turned from the lower access opening and is arranged outside the retaining wall where the corresponding floor rest platform (1-1) is located, the lower end of the additional upper stair section (3) is connected with the floor rest platform (1-1), and the same floor lower stair section (1-3) of the existing house (1) is changed into a single stair, install stair section (3) upper end additional and fix in horizontal vestibule (4) side, horizontal vestibule (4) one end is connected into the platform of registering one's residence, and horizontal vestibule (4) other end is connected installs elevator (2) additional, and installs the layer setting of stopping of elevator (2) additional and enter the platform place height department of registering one's residence at each layer, take advantage of the terraced personnel and pass through horizontal vestibule (4) flat bed and enter one's residence.
2. The retrofit elevator of claim 1, wherein: still include support piece (5), support piece (5) are vertical to be fixed in ground, and the relative side of rest platform (1-1) and horizontal vestibule (4) is connected respectively to support piece (5) both sides.
3. The retrofit elevator of claim 2, wherein: the upper stair sections (3) and the horizontal corridor (4) are prefabricated parts.
4. The retrofit elevator of claim 3, wherein: the upper stair sections (3) and the horizontal corridor (4) are both of steel structures, a layer of fine aggregate concrete is paved on the surface of the steel structures, and the thickness of the fine aggregate concrete is 3-5 cm.
5. The retrofit elevator of claim 4, wherein: horizontal vestibule (4) are "￢" type vestibule, the preceding rear end of "￢" type vestibule is connected respectively and is installed elevator (2) additional and platform of registering one's residence, the kink of "￢" type vestibule is connected with installs stair section (3) upper end additional, and it uses to wait the ladder room.
6. The construction method for adding an elevator, as set forth in any one of claims 1 to 5, characterized by comprising the steps of:
s1, prefabricating and forming an additional upper stair section (3) and a horizontal corridor (4) meeting the requirements of stress and required size in a factory;
s2, respectively arranging a lower access opening and an upper access opening on the corresponding retaining wall of each layer of rest platform (1-1) and the two or more home-entry platforms;
s3, according to relevant design and construction specifications, the method comprises the steps of additionally installing the upper stair section (3) and the horizontal corridor (4) in size, and additionally installing the elevator (2) on the proper position outside the existing house (1);
s4, the front end and the rear end of a horizontal corridor (4) are respectively connected with an elevator (2) and an entrance platform, one end of an upper corridor section (3) is connected with a rest platform (1-1), the other end of the upper corridor section penetrates through a lower passage and is fixed on the side surface of the horizontal corridor (4), a stopping layer of the elevator (2) is arranged at the height of each floor entrance platform, and elevator taking personnel enter the elevator through the horizontal corridor (4) through the upper passage;
s5, dismantling an upper stair section (1-2) in the original double-track stair in the existing house (1) and a half-side rest platform (1-1) directly connected with the lower end of the upper stair section (1-2);
s6, hoisting the supporting piece (5) to the space between the rest platform (1-1) on the remaining half side and the horizontal corridor (4), wherein the supporting piece (5) is vertically fixed on the ground, and the two sides of the supporting piece (5) are respectively fixedly supported on the opposite side surfaces of the horizontal corridor (4) and the rest platform (1-1).
7. The construction method according to claim 6, wherein: the front end and the rear end of the horizontal corridor (4) are respectively hinged with an entrance platform and an additional elevator (2), and the upper end and the lower end of the upper stair section (3) are respectively hinged with a rest platform (1-1) and the horizontal corridor (4).
8. The construction method according to claim 7, wherein: go into outdoor terminal surface, rest platform (1-1) outer terminal surface and horizontal vestibule (4) preceding, back, right-hand member face and implant chemical crab-bolt or expansion bolts through punching respectively, bolted connection installs elevator (2) and platform of registering one's residence additional respectively in horizontal vestibule (4) front and back end, install horizontal vestibule (4) right-hand member face and rest platform (1-1) outer terminal surface respectively in the upper and lower end of stair section (3) additional, horizontal vestibule (4) and platform of registering one's residence additional install elevator (2) junction, install stair section (3) and horizontal vestibule (4) and rest platform (1-1) junction additional and all add the rubber shock attenuation strip.
9. The construction method according to claim 8, wherein: and guard railings are arranged on two sides of the horizontal corridor (4) and the upper stair sections (3).
10. The construction method according to claim 9, wherein: support piece (5) adopt steel construction cow leg post, the relative side of horizontal vestibule (4) and rest platform (1-1) is punched respectively and is implanted chemical crab-bolt or expansion bolts, and the installation steel sheet carries out bolted connection or welding through steel sheet and steel construction cow leg post, support piece (5) fixed connection rest platform (1-1) and horizontal vestibule (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010684986.4A CN111910943A (en) | 2020-07-16 | 2020-07-16 | Flat-floor-to-home type additional elevator for existing residence and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010684986.4A CN111910943A (en) | 2020-07-16 | 2020-07-16 | Flat-floor-to-home type additional elevator for existing residence and construction method thereof |
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| Publication Number | Publication Date |
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| CN111910943A true CN111910943A (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010684986.4A Pending CN111910943A (en) | 2020-07-16 | 2020-07-16 | Flat-floor-to-home type additional elevator for existing residence and construction method thereof |
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| Country | Link |
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| CN (1) | CN111910943A (en) |
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2020
- 2020-07-16 CN CN202010684986.4A patent/CN111910943A/en active Pending
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