CN212050064U - Direct current screw rod villa elevator - Google Patents
Direct current screw rod villa elevator Download PDFInfo
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- CN212050064U CN212050064U CN201922302903.6U CN201922302903U CN212050064U CN 212050064 U CN212050064 U CN 212050064U CN 201922302903 U CN201922302903 U CN 201922302903U CN 212050064 U CN212050064 U CN 212050064U
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Abstract
The utility model relates to a direct current screw rod villa elevator, include the car frame that is gone up and down along the well by the elevating system drive, fixed mounting has the car on the car frame, elevating system includes the vertical lift lead screw of fixing in the well, the spiro union has the lifting nut on the lift lead screw, the lifting nut is connected with the rear end of car frame, the upper end fixed mounting of car frame has elevator motor, elevator motor passes through drive mechanism and is connected with the lifting nut to it is rotatory to drive the lifting nut. The utility model discloses utilize screw-nut mechanism to drive the elevator as power unit and go up and down, simple structure, simple to operate, even running require for a short time to the well structure, are fit for the use of domestic villa.
Description
The technical field is as follows:
the utility model relates to a direct current screw rod villa elevator.
Background art:
along with the improvement of living standard of people, more and more people move into the family villa to live in order to conveniently go upstairs and downstairs and carry heavy objects between the floors, can select to install the elevator in the family villa. However, the existing elevator usually adopts a steel cable hoisting structure, such a transmission structure needs to design a special shaft, and the structure of the shaft is complex and high in cost, so that the elevator is not suitable for being used in a household villa.
The utility model has the following contents:
the utility model discloses make the improvement to the problem that above-mentioned prior art exists, promptly the utility model aims to solve the technical problem that a direct current screw rod villa elevator is provided, not only simple structure, reasonable requires for a short time to the well moreover.
In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a direct current screw rod villa elevator, includes the car frame that is gone up and down along the well by the elevating system drive, fixed mounting has the car on the car frame, elevating system includes the vertical lift lead screw of fixing in the well, the spiro union has the lifting nut on the lift lead screw, the lifting nut is connected with the rear end of car frame, the upper end fixed mounting of car frame has elevator motor, elevator motor passes through drive mechanism and is connected with the lifting nut to it is rotatory to drive the lifting nut.
Furthermore, the car frame is of a horseshoe structure and comprises a fixed upright post, and an upper car frame plate and a lower car frame plate are fixedly connected to the upper end and the lower end of the fixed upright post respectively; the car is fixed between the car frame upper plate and the car frame lower plate.
Furthermore, the upper end of the rear side face of the fixed upright post is fixedly connected with a mounting plate, the lifting motor is fixed on the mounting plate, the transmission mechanism comprises a driving bevel gear and a driven bevel gear, the driving bevel gear is fixedly connected with a motor shaft of the lifting motor, the driven bevel gear is fixedly connected with a lifting nut, and the driven bevel gear is meshed with the driving bevel gear.
Furthermore, the mounting panel is located the below of lift nut, is provided with thrust bearing between mounting panel and the lift nut to reduce the frictional force of terminal surface under the lift nut rotation.
Further, a linear bearing in sliding fit with the lifting screw rod is vertically arranged below the mounting plate, the upper portion, the middle portion and the lower portion of the linear bearing are fixedly connected with the rear side face of the fixed upright post through the fixed plate respectively, and the bottom end face of the linear bearing is flush with the bottom end face of the lower plate of the car frame.
Furthermore, the left end and the right end of the hoistway are respectively provided with a T-shaped guide rail which is vertically arranged, and the T-shaped guide rails are supported by a guide rail bracket; the elevator guide shoe is in sliding fit with the T-shaped guide rail, and the center of the lifting screw rod, the center of the T-shaped guide rail, the center of the car frame straight beam and the centers of the elevator guide shoes at the upper end and the lower end are all on the same plane.
Furthermore, a side hole is formed in the side wall of the lifting nut, and a reverser is embedded in the side hole.
Further, the lifting motor adopts a direct current motor; the elevator landing elevator system is characterized by further comprising a power supply system for providing a direct-current power supply for the elevator motor, wherein the power supply system comprises a control module, an electric storage module for supplying power to the elevator motor and a charging pile for charging the electric storage module, the charging pile is arranged at the elevator landing and takes three-phase alternating-current commercial power at the elevator landing as a power supply, an inversion module is arranged in the charging pile, and the inversion module converts the commercial power into direct current and outputs the direct current to the power output end of the charging pile; the electric power storage module is arranged at the top of the car frame, and a charging plug capable of being ejected out is arranged at a charging circuit of the electric power storage module; when the time that the car stops at the elevator landing is greater than the threshold value, the charging bolt pops up and inserts at the electric power output end that fills electric pile, makes the electric power storage module charge in filling electric pile department.
Furthermore, an emergency power supply pile is arranged at the bottom of the well, the emergency power supply pile takes three-phase alternating current mains supply as a power supply, and a storage battery is arranged on the emergency power supply pile; when the electric storage module is charged in the charging pile, the electric storage module monitors the condition of commercial power supply; when the commercial power fails, the lift car prompts passengers to leave the lift car after arriving at a lift landing, and the passengers automatically stop at the bottom of a well after all the passengers leave, and the emergency power supply pile is connected with the electric storage module to supply emergency power to the lift car through a storage battery carried by the emergency charging pile and charge the electric storage module; the battery built in the electric power storage module is arranged at the top of the lift car frame, and the selectable types of the batteries comprise lithium iron phosphate batteries or ternary lithium iron batteries.
Furthermore, the power supply system also comprises a display screen which can display the working conditions of the charging pile at the shaft and the inverter built in the power storage module; the power supply system can also monitor the working conditions of the charging pile and the inverter built in the electric storage module at the hoistway through a remote monitoring device; the remote monitoring device comprises one or more of an RS232 device, an RS485 device, a mobile phone, an SNMP device or a GSM communication device.
Compared with the prior art, the utility model discloses following effect has:
(1) the utility model uses the screw rod nut mechanism as the power mechanism to drive the elevator to lift, has simple structure, convenient installation and small requirement on the well structure, and is suitable for household villas;
(2) the linear bearing arranged at the rear end of the car frame enables the range of the bending stress borne by the lifting screw rod to extend from the length of the lifting nut to the bottom end face of the car frame, so that the stress state of the lifting screw rod is greatly improved, and the bending strength and the stability of a pressure rod of the lifting screw rod are effectively improved;
(3) the direct current motor is adopted to provide the driving force for the elevator of the household villa, so that the traveling cable can be saved, and the requirements of beauty and sightseeing are met;
(4) because the hoistway is provided with the charging pile and the emergency power supply pile, the elevator can still send passengers to a required landing even if the commercial power fails.
Description of the drawings:
fig. 1 is a schematic plan layout view of a first embodiment of the present invention;
FIG. 2 is a schematic sectional view taken along line B-B in FIG. 1;
fig. 3 is a schematic view of the construction of fig. 2 with the hoistway and the car omitted;
fig. 4 is a schematic perspective view of a car frame according to an embodiment of the present invention;
fig. 5 is a schematic view of a first embodiment of the present invention in a use state;
fig. 6 is a schematic circuit diagram of an inverter circuit according to an embodiment of the present invention;
fig. 7 is a schematic plan layout view of a second embodiment of the present invention.
In the figure:
1-a well; 2-a car frame; 3-a car; 4-lifting screw rod; 5-lifting nut; 6-a lifting motor; 7-mounting a plate; 8-an electric storage module; 9-linear bearings; 10-drive bevel gear; 11-driven bevel gear; 12-a thrust bearing; 13-an elevator landing; 14-a storage battery; 15-emergency power supply pile; 21-car doors; 22-hall door; 31-a battery; 32-vehicle mounted inverter; 33-a control module; 34-a charging pile; 71-fixing the upright post; 72-a fixed plate; 73-car frame upper plate; 74-car frame lower panel; 75-a cover plate; 80-traction central plane; 81-car frame straight beam; 82-T shaped guide rails; 83-a guide rail bracket; 100-connecting column.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 6, the utility model relates to a direct current screw villa elevator, including the car frame 2 that is driven by elevating system and goes up and down along well 1, fixedly mounted with car 3 on the car frame 2, elevating system includes the lifting lead screw 4 of vertical fixing in well 1, the spiro union has lifting nut 5 on the lifting lead screw 4, lifting nut 5 and lifting lead screw 4 form the slip screw pair, lifting nut 5 rotates with the rear end of car frame 2 to be connected, the upper end of car frame 2 is fixedly mounted with elevator motor 6, elevator motor 6 is connected with lifting nut 5 through drive mechanism; because the lifting screw rod 4 is fixed, the lifting nut 5 can vertically move up and down along the axial direction of the lifting screw rod 4 while rotating, and further drives the car frame 2 to lift. The elevator is driven to ascend and descend by using the screw rod nut mechanism as a power mechanism, the elevator lifting device is simple in structure, convenient to install and low in requirement on a well structure, and is suitable for being used in household villas.
In this embodiment, the car frame 2 is a horseshoe-shaped structure, the structure of the car frame 2 mainly includes a fixed upright 71, a car frame upper plate 73, a car frame lower plate 74 and a car frame straight beam 81, the car frame upper plate 73 and the car frame lower plate 74 are respectively fixedly connected to the upper end and the lower end of the fixed upright 71, and the car frame straight beam 81 vertically arranged is fixedly connected to the left end and the right end of the fixed upright 71; the car 3 is fixed between the car frame upper plate 73 and the car frame lower plate 74 via a fastener. The car frame adopts the horseshoe-shaped structure, so that the appearance is clean and tidy, the whole elevator structure is rich in aesthetic feeling, and most parts of the household villa elevator can be manufactured and assembled on a manufacturing line of a manufacturing plant.
In this embodiment, the mounting plate 7 is fixedly connected to the upper end of the rear side surface of the fixed upright column 71, the lifting motor 6 is fixed to the mounting plate 7, the transmission mechanism includes a driving bevel gear 10 and a driven bevel gear 11, the driving bevel gear 10 is fixedly connected to a motor shaft of the lifting motor 6, the driven bevel gear 11 is fixedly connected to the lifting nut 5, and the driven bevel gear 11 is engaged with the driving bevel gear 10. It should be noted that, in actual production, other transmission mechanisms, such as a worm gear mechanism, a belt transmission mechanism, other gear mechanisms, and the like, may also be used.
In this embodiment, the mounting plate 7 is located below the lifting nut 5, and a thrust bearing 12 is disposed between the mounting plate 7 and the lifting nut 5 to reduce friction of the lower end surface when the lifting nut 5 rotates.
In this embodiment, a linear bearing 9 slidably engaged with the lifting screw 4 is vertically disposed below the mounting plate 7, the upper portion, the middle portion, and the lower portion of the linear bearing 9 are respectively and fixedly connected to the rear side of the fixed upright 71 via a fixed plate 72, and the bottom end surface of the linear bearing 9 is flush with the bottom end surface of the car frame lower plate 74. The fixing plates 72 are distributed on the upper part, the middle part and the lower part of the car frame 2, so that the linear bearings 9 for supporting the lifting screw rods 4 can be ensured to be in absolute rigid connection with the car frame straight beams 81, the linear bearings 9 enable the lifting screw rods 4 to bear bending stress, the range of the bending stress extends to the bottom end face (larger than 2000 mm) of the car frame 2 from the length of the lifting nuts 5, the stress state of the lifting screw rods 4 is greatly improved, and the bending strength and the compression bar stability of the lifting screw rods 4 are effectively improved.
In this embodiment, in order to guide the lifting of the car frame 2, the T-shaped guide rails 82 that are vertically arranged are respectively installed at the left and right ends of the hoistway 1, and the T-shaped guide rails 82 are supported and fixed on the rear side wall of the hoistway 1 by the guide rail brackets 83; the upper end and the lower end of the straight beam 81 of the car frame are respectively provided with an elevator guide shoe, and the elevator guide shoes are in sliding fit with the T-shaped guide rail 82 to play a role of sliding guide along the vertical direction; the center of the lifting screw rod 4, the center of the T-shaped guide rail 83, the center of the car frame straight beam 81 and the centers of the elevator guide shoes at the upper end and the lower end are on one surface, namely a car frame traction central surface 80.
In this embodiment, the side opening has been seted up to lifting nut 5's lateral wall, the reverser has been inlayed in the side opening, forms steel ball circulation channel, and frictional resistance is little, and transmission efficiency is high (can reach more than 90%), and steady operation does not have during the start-up and quivers, does not crawl during the low-speed, is applicable to very much the frequent characteristic of home use elevator flat bed start-up, and passenger's comfort level is good. The outer diameter of the lifting nut is approximately the same as that of the sliding screw pair, the adjustment of the clearance and the pre-tightening of the lifting nut are convenient, and the work is reliable.
In the embodiment, the hoistway, the car and the door system are designed to be integrated by adopting a glass and steel panel structure, and have the functions of beauty and sightseeing; the well adopts totally enclosed glass well, and the car is totally enclosed direction of height and is furnished with the car door. It should be noted that, in order to ensure the safety of the old and young passengers, it is not recommended to cancel the car and the car door. In this embodiment, the car can be set to a height direction semi-closed structure, at this time, the bridge roof device is not provided, the car wall plate and the car door are only the lower half part, the height is larger than 1200 mm, and the surrounding handrails are additionally arranged. The hall door in the embodiment can be set as a driven hall door or an outward opening type driving hall door and is provided with a door opening button and an automatic door closer.
In this embodiment, the lifting motor 6 is a dc motor; the direct current motor is adopted to provide the driving force for the elevator of the household villa, so that the traveling cable can be omitted, and the requirements of beauty and sightseeing are met. More importantly, the elevator is suitable for frequent leveling and starting of the elevator and the characteristic of no-load or full-load unbalance, and the comfort level of passengers is good.
In this embodiment, the elevator further includes a power supply system for providing a direct current power supply for the lifting motor 6, the power supply system includes a control module 33, an electric storage module 8 for supplying power to the lifting motor 6, and a charging pile 34 for charging the electric storage module 8, the charging pile 34 is disposed at the elevator landing 13, and when the car 2 stops at the elevator landing 13, the charging pile 34 is adjacent to a charging circuit of the electric storage module 8, as shown in fig. 5.
In this embodiment, an ejectable charging plug is disposed at the charging circuit of the power storage module 8; when the time that the car 2 stops at the elevator landing 13 is greater than the threshold value, the charging bolt pops up and is inserted at the power output end of the charging pile, so that the electric power storage module is charged at the charging pile.
In this embodiment, the charging pile 34 uses a three-phase alternating current commercial power at the station of the elevator floor 13 as a power supply; an inverter module is arranged in the charging pile 34; the contravariant module is exported to the electric power output end department of filling electric pile after changing commercial power into the direct current.
In this embodiment, the bottom of well 1 is equipped with emergency power supply stake 15, emergency power supply stake 15 uses three-phase alternating current commercial power as the power, and emergency power supply stake is from taking battery 14.
When the electric storage module 8 is charged in the charging pile 34, the electric storage module 8 monitors the condition of commercial power supply; when the commercial power is failed, the car 3 prompts passengers to leave the car 3 after arriving at the elevator landing 13, and the passengers automatically stop at the bottom of the hoistway 1 after all the passengers leave, the emergency power supply pile 15 is connected with the electric storage module 8, so that the emergency power is supplied to the car 3 through the storage battery 14 of the emergency power supply pile 15, and the electric storage module 8 is charged.
In the present embodiment, the optional type of the battery 31 built in the power storage module 8 includes a lithium iron phosphate battery or a ternary lithium iron phosphate battery, and both the battery 31 and the vehicle-mounted inverter 32 built in the power storage module 8 are mounted on the top of the car frame upper plate 73. Preferably, the power storage module 8 is a vehicle-mounted power storage module incorporating a lithium battery.
In this embodiment, the car 3 is a light car formed by combining light alloy members, no power supply cable is provided at the car to reduce the self weight of the car, and if the lifting motor is an ac motor, a vehicle-mounted inverter is built in the electric storage module to output electric power to the lifting, and the vehicle-mounted inverter is an inverter supporting three-phase unbalanced loading, power-frequency pure sine wave output, and high start peak power.
In this embodiment, the power supply system further includes a display screen capable of displaying the working conditions of the charging pile and the inverter built in the power storage module at the hoistway; the power supply system can also monitor the working conditions of the charging pile and the inverter built in the electric storage module at the hoistway through a remote monitoring device; the remote monitoring device comprises one or more of an RS232 device, an RS485 device, a mobile phone, an SNMP device or a GSM communication device.
In the embodiment, the power storage module is provided with a battery detection module connected with the control module; when the control module detects that the temperature of the lithium battery of the power storage module is abnormal through the battery detection module, the control module enables the lift car to automatically stop at the nearest elevator landing and opens the elevator door so that passengers can escape.
In this embodiment, when the elevator is in a non-operating state or the electric quantity of the elevator power storage module is lower than a threshold value, the car automatically stops at the base of the hoistway, the power storage module is charged by an inverter at the base, the inverter uses commercial power as a power supply, and the charging mode of the inverter includes a low-current mode, a long-time mode, a three-stage charging mode, a constant-current mode, a constant-voltage mode and a floating charging mode.
In the present embodiment, a cover plate covering the outside of the power storage module 8 is fixedly attached to the top of the car frame upper plate to protect the power storage module 8.
The specific implementation process of the power supply system comprises the following steps: the car 3 automatically stops at the elevator landing 13 for standby when idle, if the idle standby time exceeds a threshold value, the charging plug of the electric storage module 8 is ejected and inserted at the power output end of the charging pile 34 of the elevator landing 13, and the battery 31 in the electric storage module is charged. When the elevator lobby sends a call request, if the electric quantity of the electric storage module 8 is enough, the electric storage module 8 withdraws the charging plug, the lifting motor 6 is started, and the elevator is driven to drive the elevator lobby which sends the call request to carry passengers. When the commercial power fails, the charging piles 34 of the elevator landings 13 are powered off, after the electric storage modules 8 of the car 3 monitor the commercial power failure through the charging piles 34, the car 3 prompts passengers to leave the car 3 after arriving at the elevator landings 13, and automatically runs to stay at the bottom of the hoistway 1 after all the passengers leave, the emergency power supply piles 15 are connected with the electric storage modules 8, so that the storage batteries 14 of the emergency charging piles 15 provide emergency power for the car 3, the electric storage modules 8 of the car 3 are charged, and at the moment, the car 6 only responds to the emergency call request of the elevator lobby. The built-in inversion module of the charging pile is an inverter used by a sine wave vehicle-mounted inverter power supply.
In this embodiment, the specific working method of the elevator is as follows:
(1) the elevator rises: the lifting motor 6 drives the lifting nut 5 to rotate forward through the transmission mechanism, the lifting nut 5 moves upwards along the lifting screw rod 4 while rotating forward, and the lifting nut 5 drives the car frame 2 and the car 3 to move upwards synchronously, so that the elevator ascends;
(2) descending of the elevator: the lifting motor 6 drives the lifting nut 5 to rotate reversely through the transmission mechanism, the lifting nut 5 moves downwards along the lifting screw rod 4 while rotating reversely, and the lifting nut 5 drives the car frame 2 and the car 3 to move downwards synchronously, so that the elevator descends.
Example two: as shown in fig. 7, the present embodiment is different from the first embodiment in that: the rear end of the well is of an unclosed structure, the original building wall surface is directly utilized, the rear end of the well forms a closed structure with the wall surface through the connecting column 100, the guide rail support 83 is welded with an embedded part or a steel bar of the original building wall surface, and the stability and the perpendicularity of the T-shaped guide rail 82 are guaranteed.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (10)
1. The utility model provides a direct current screw rod villa elevator, includes the car frame that is driven along the well lift by elevating system, fixed mounting has car, its characterized in that on the car frame: the lifting mechanism comprises a lifting screw rod vertically fixed in the shaft, a lifting nut is screwed on the lifting screw rod and connected with the rear end of the car frame, a lifting motor is fixedly mounted at the upper end of the car frame and connected with the lifting nut through a transmission mechanism so as to drive the lifting nut to rotate.
2. The direct current screw villa elevator of claim 1, characterized in that: the car frame is of a horseshoe-shaped structure and comprises a fixed upright post, and an upper car frame plate and a lower car frame plate are fixedly connected to the upper end and the lower end of the fixed upright post respectively; the car is fixed between the car frame upper plate and the car frame lower plate.
3. The direct current screw villa elevator of claim 2, characterized in that: the lifting mechanism is characterized in that the upper end of the rear side face of the fixed upright post is fixedly connected with a mounting plate, the lifting motor is fixed on the mounting plate, the transmission mechanism comprises a driving bevel gear and a driven bevel gear, the driving bevel gear is fixedly connected with a motor shaft of the lifting motor, the driven bevel gear is fixedly connected with a lifting nut, and the driven bevel gear is meshed with the driving bevel gear.
4. The direct current screw villa elevator of claim 3, characterized in that: the mounting panel is located the below of lift nut, is provided with thrust bearing between mounting panel and the lift nut to the frictional force of terminal surface under when reducing the lift nut rotation.
5. The direct current screw villa elevator of claim 3, characterized in that: the linear bearing in sliding fit with the lifting screw rod is vertically arranged below the mounting plate, the upper portion, the middle portion and the lower portion of the linear bearing are fixedly connected with the rear side face of the fixed upright post through the fixed plate respectively, and the bottom end face of the linear bearing is flush with the bottom end face of the car frame lower plate.
6. The direct current screw villa elevator of claim 2, characterized in that: the left end and the right end of the hoistway are respectively provided with a T-shaped guide rail which is vertically arranged, and the T-shaped guide rails are supported by a guide rail bracket; the elevator guide shoe is in sliding fit with the T-shaped guide rail, and the center of the lifting screw rod, the center of the T-shaped guide rail, the center of the car frame straight beam and the centers of the elevator guide shoes at the upper end and the lower end are all on the same plane.
7. The direct current screw villa elevator of claim 1, characterized in that: a side hole is formed in the side wall of the lifting nut, and a reverser is embedded in the side hole.
8. The direct current screw villa elevator of claim 1, characterized in that: the lifting motor adopts a direct current motor; the elevator landing elevator system is characterized by further comprising a power supply system for providing a direct-current power supply for the elevator motor, wherein the power supply system comprises a control module, an electric storage module for supplying power to the elevator motor and a charging pile for charging the electric storage module, the charging pile is arranged at the elevator landing and takes three-phase alternating-current commercial power at the elevator landing as a power supply, an inversion module is arranged in the charging pile, and the inversion module converts the commercial power into direct current and outputs the direct current to the power output end of the charging pile; the electric power storage module is arranged at the top of the car frame, and a charging plug capable of being ejected out is arranged at a charging circuit of the electric power storage module; when the time that the car stops at the elevator landing is greater than the threshold value, the charging bolt pops up and inserts at the electric power output end that fills electric pile, makes the electric power storage module charge in filling electric pile department.
9. The direct current screw villa elevator of claim 8, characterized in that: an emergency power supply pile is arranged at the bottom of the hoistway, the emergency power supply pile takes three-phase alternating current mains supply as a power supply, and a storage battery is arranged on the emergency power supply pile; when the electric storage module is charged in the charging pile, the electric storage module monitors the condition of commercial power supply; when the commercial power fails, the lift car prompts passengers to leave the lift car after arriving at a lift landing, and the passengers automatically stop at the bottom of a well after all the passengers leave, and the emergency power supply pile is connected with the electric storage module to supply emergency power to the lift car through a storage battery carried by the emergency charging pile and charge the electric storage module; the battery built in the electric power storage module is arranged at the top of the lift car frame, and the selectable types of the batteries comprise lithium iron phosphate batteries or ternary lithium iron batteries.
10. The direct current screw villa elevator of claim 8, characterized in that: the power supply system also comprises a display screen which can display the working conditions of the charging pile at the hoistway and the inverter built in the electric storage module; the power supply system can also monitor the working conditions of the charging pile and the inverter built in the electric storage module at the hoistway through a remote monitoring device; the remote monitoring device comprises one or more of an RS232 device, an RS485 device, a mobile phone, an SNMP device or a GSM communication device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922302903.6U CN212050064U (en) | 2019-12-20 | 2019-12-20 | Direct current screw rod villa elevator |
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| CN201922302903.6U CN212050064U (en) | 2019-12-20 | 2019-12-20 | Direct current screw rod villa elevator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110980472A (en) * | 2019-12-20 | 2020-04-10 | 福建快科城建增设电梯股份有限公司 | Household villa elevator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110980472A (en) * | 2019-12-20 | 2020-04-10 | 福建快科城建增设电梯股份有限公司 | Household villa elevator |
| CN110980472B (en) * | 2019-12-20 | 2024-03-01 | 福建快科城建增设电梯股份有限公司 | Household villa elevator |
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