CN109850725B - Drum type double-support combined high-speed heavy-load traction machine - Google Patents
Drum type double-support combined high-speed heavy-load traction machine Download PDFInfo
- Publication number
- CN109850725B CN109850725B CN201811586003.2A CN201811586003A CN109850725B CN 109850725 B CN109850725 B CN 109850725B CN 201811586003 A CN201811586003 A CN 201811586003A CN 109850725 B CN109850725 B CN 109850725B
- Authority
- CN
- China
- Prior art keywords
- supporting seat
- traction
- main shaft
- type double
- combined high
- 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.)
- Active
Links
- 235000000396 iron Nutrition 0.000 claims description 15
- 210000004907 gland Anatomy 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 241001584775 Tunga penetrans Species 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Abstract
The present invention relates to a traction machine. The traction machine comprises a front supporting seat and a rear supporting seat, a main shaft movably arranged in the front supporting seat and the rear supporting seat, and a traction wheel arranged at a position between the front supporting seat and the rear supporting seat on the main shaft; the rear supporting seat is internally provided with a stator component, the rear end part of the main shaft is provided with a rotor component, the front end of the rear supporting seat is provided with a drum brake component, the traction wheel is provided with a cylindrical surface matched with the drum brake, and the underframe is respectively arranged between the front supporting seat, the rear supporting seat and the front and rear supporting seats. The front support seat and the rear support seat are connected through the underframe after being arranged in a split way, the frame and the main shaft are combined and matched according to different loads and speeds, only one set of casting die is needed, and various types of traction machines with the loads of 1000-10000kg and the speeds of 0.5-5m/s can be produced in a combined way. Greatly reduces the development cost of the mould. The main shaft bearing capacity is high. The traction wheel and the brake wheel are cast integrally, so that the traction wheel is safe and reliable.
Description
Technical Field
The invention relates to an elevator traction power device, in particular to a drum type double-support combined high-speed heavy-load traction machine.
Background
The traction machine is an elevator traction power device which is connected through a steel wire rope and used for traction of an elevator, is a power source for lifting and running an elevator car, and generally comprises a machine base, a traction wheel, a main shaft, a rotor and a stator which are arranged on the machine base, wherein the traction machine can be generally divided into a traction machine with an inner rotor structure and a traction machine with an outer rotor structure according to different matching structures of the rotor and the stator.
In the use scene that the heat dissipation requirement is higher, generally use external rotor hauler, the structure of current external rotor hauler generally has high-speed hauler cantilever of big load and double bracing structure, and cantilever structure has the main shaft to bear little, and the frame warp is big, the unable general shortcoming of mould. The method is mainly used for the small-load elevator. The existing traction machine with the double supporting structure in the market mainly has two structures, one is a double traction wheel, a disc brake is adopted, and the other is a double traction wheel and a rotor, and a drum type or disc brake is adopted. The double traction wheels and the disc brake braking traction machine have the defects of difficult processing, overhigh overall cost and inconvenient installation and maintenance. In addition, the double traction wheels and the rotors are used for braking the traction machine by adopting a drum type or disc type brake, so that the main shaft has small bearing capacity, low power density and poor heat dissipation.
Disclosure of Invention
One of the purposes of the invention is to provide a drum type double-support combined high-speed heavy-load traction machine.
The traction machine comprises a front supporting seat and a rear supporting seat, a main shaft movably arranged in the front supporting seat and the rear supporting seat, and a traction wheel arranged at a position between the front supporting seat and the rear supporting seat on the main shaft; the rear supporting seat is internally provided with a stator component, the rear end part of the main shaft is provided with a rotor component, the front end of the rear supporting seat is provided with a drum brake component, a cylindrical surface matched with the drum brake is arranged at a position, which is near the middle part of the main shaft, of the traction sheave, and an underframe is respectively arranged between the front supporting seat, the lower part of the rear supporting seat and the front supporting seat and the rear supporting seat.
Preferably, the underframe comprises two H-shaped irons which are parallel to each other at two sides, a front cross beam, a middle cross beam and a rear cross beam which are positioned at the front end, the middle part and the rear end between the H-shaped irons at two sides, wherein two front cushion blocks which are padded below a front supporting seat are arranged on the front ends and the front cross beams of the H-shaped irons at two sides, rear cushion blocks padded at two sides below a rear supporting seat are arranged at the rear ends of the H-shaped irons at two sides, and a plurality of vertical supporting plates are arranged in grooves at the outer sides of the H-shaped irons; the I-shaped iron is provided with a notch for avoiding the traction sheave in the area where the traction sheave is located.
Preferably, a front bearing is arranged in the front supporting seat, and the front bearing is installed in the front supporting seat through a front bearing outer gland and a front bearing inner gland.
Preferably, the outer end of the front supporting seat is provided with an encoder, and the encoder is arranged on the front supporting seat through an encoder cover plate.
Preferably, the front support seat is provided with a front filler pipe assembly and a front drain pipe assembly.
Preferably, the cylindrical surface of the traction sheave is formed by extending the rear end surface of the rope groove portion of the traction sheave to the rear.
Preferably, the stator assembly comprises a stator core and a winding arranged on the stator core, wherein the combination part of the stator core and the main shaft is positioned at the position of the middle part of the main shaft backwards.
Preferably, the rear bearing outer gland is located partially within the cylindrical surface of the traction sheave.
Preferably, the drum brake assembly comprises a driving part and action arms, wherein the driving part is arranged above the rear supporting seat, and the action arms are connected with the driving part and are arranged on two sides of the column surface of the traction sheave.
Preferably, a jigger component which acts with the rotor is arranged at the position of the rear side wall of the underframe and below the rotor.
The drum type double-support combined high-speed heavy-load traction machine is characterized in that a front support seat and a rear support seat are arranged in a split mode and then are connected through a bottom frame, the frame is matched with a main shaft in a combined mode according to different loads and speeds, only one set of casting die is needed, and multiple types of traction machines with the loads of 1000-10000kg and the speeds of 0.5-5m/s can be produced in a combined mode. Greatly reduces the development cost of the mould. The main shaft bearing capacity is high. The traction wheel and the brake wheel are cast integrally, so that the traction wheel is safe and reliable.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention;
FIG. 2 is a side view of a block diagram of an embodiment of the present invention;
FIG. 3 is a side cross-sectional block diagram of an embodiment of the present invention;
FIG. 4 is a front side block diagram of an embodiment of the present invention;
fig. 5 is a schematic view of a base structure according to an embodiment of the invention.
Detailed Description
As shown in fig. 1 to 5, the drum type double-support combined high-speed heavy-load traction machine of the present embodiment includes a front support base 1, a rear support base 2, and a main shaft 3 mounted in the front support base 1 and the rear support base 2 movably, and a traction wheel 4 is mounted on the main shaft 3 at a position between the front support base 1 and the rear support base 2; the rear supporting seat 2 is internally provided with a stator assembly 5, the rear end part of the main shaft 3 is provided with a rotor assembly 6, the front end of the rear supporting seat 2 is provided with a drum brake assembly 7, the traction wheel 4 is provided with a cylindrical surface 41 which is matched with the drum brake at a position near the middle part of the main shaft, and the underframe 8 is respectively arranged between the front supporting seat 1, the rear supporting seat 2 and between the front supporting seat 1 and the rear supporting seat 2.
During operation, the rotor assembly rotates relative to the stator assembly, the main shaft is driven to rotate, the traction wheel fixed on the main shaft rotates along with the main shaft to generate traction, and in structural characteristics, the front support seat 1 and the rear support seat 2 are manufactured and installed respectively during manufacturing and installation and then are connected through the base 7, so that the front support seat and the rear support seat can be manufactured and selected as required respectively, the base can be assembled through the combination of sectional materials and plates, the assembly difficulty and the cost are greatly lower than the design difficulty and the cost of a casting die, meanwhile, the matching flexibility is greatly improved, and the die cost and the component installation precision are reduced. In addition, cylindrical surfaces 41 on the drum brake assembly 7 and the traction sheave 4 for matching with the drum brake are positioned near the middle part of the middle shaft, namely near the middle part of the whole machine, so that the braking is more stable.
In this embodiment, the bottom frame 8 includes two parallel h-shaped irons 81 on two sides, a front beam 82, a middle beam 83 and a rear beam 84 at front end, middle portion and rear end between the h-shaped irons 81 on two sides, two front cushion blocks 85 are arranged on the front ends and the front beams of the h-shaped irons 81 on two sides and are padded under the front supporting seat 1, rear cushion blocks 86 are arranged on the rear ends of the h-shaped irons 81 on two sides and padded under the rear supporting seat 2, and a plurality of vertical supporting plates 87 are arranged in grooves on the outer sides of the h-shaped irons; the I-shaped iron 81 is provided with a notch 88 avoiding the traction sheave in the area where the traction sheave 4 is located.
In the present embodiment, a front bearing 11 is disposed in the front support 1, and the front bearing 11 is mounted in the front support by a front bearing outer gland 12 and a front bearing inner gland 13.
In this embodiment, the outer end of the front support 1 is provided with an encoder 14, and the encoder 14 is mounted on the front support through an encoder cover 15.
In this embodiment, the front support seat 1 is provided with a front filler pipe assembly 17 and a front drain pipe assembly 16.
In the present embodiment, the cylindrical surface 41 of the traction sheave 4 is formed by extending the rear end surface of the rope groove portion 42 of the traction sheave outward toward the rear. The diameter of the cylindrical surface 41 is larger than the diameter of the rope groove portion 42, so that the cylindrical surface has a larger contact surface with the drum brake assembly 7, which is more advantageous for safety.
In this embodiment, the stator assembly 5 includes a stator core 51 and a winding 52 mounted on the stator, where a joint 54 between the stator core 51 and the rear support seat is located in a position rearward of the middle of the main shaft 3.
In order to make the whole machine running and braking smoother, in this embodiment, the rear bearing outer gland 55 of the rear supporting seat 2 is partially located within the cylindrical surface 41 of the traction sheave 4. This structure is the key point of the stability when improving the brake, because when producing power, thereby drive the main shaft motion by the rotor and drive the traction sheave, when braking, traction sheave is farther away from the rotor, when the brake is restrained main shaft and is rotated, rotor part still has power, cause the swing of main shaft to give the great pressure of bearing this moment easily, stability and the bearing spare life-span of using have been reduced, after adopting this technical scheme, traction sheave's cylindricality face 41 extends to the rotor direction, the locating cylindricality face 41 within range of rear bearing outer gland 55 part, the application region when the messenger's rear bearing of maximum range is close to the brake makes it more steady, holistic stability and the bearing life-span when improving the brake.
In this embodiment, the drum brake assembly 7 includes a driving part 71 above the rear support base and an actuating arm 72 linked with the driving part 71 and located at both sides of the cylindrical surface of the traction sheave.
Since there are many components on one side of the traction sheave in the present embodiment, there is no space for installing the jigger assembly, in the present embodiment, the jigger assembly 18 acting with the rotor is disposed at the rear sidewall of the chassis 8 below the rotor assembly 6.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the invention.
Claims (10)
1. Drum-type double-support combined high-speed heavy-load traction machine is characterized in that: the traction device comprises a front supporting seat, a rear supporting seat and a main shaft movably arranged in the front supporting seat and the rear supporting seat, wherein a traction wheel is arranged on the main shaft at a position between the front supporting seat and the rear supporting seat; the rear supporting seat is internally provided with a stator component, the rear end part of the main shaft is provided with a rotor component, the front end of the rear supporting seat is provided with a drum brake component, the position, near the middle part of the main shaft, of the traction wheel is provided with a cylindrical surface matched with the drum brake, the diameter of the cylindrical surface is larger than that of a rope groove part of the traction wheel, an underframe is respectively arranged among the front supporting seat, the rear supporting seat and between the front supporting seat and the rear supporting seat, and a rear bearing outer gland of the rear supporting seat is partially positioned in the range of the cylindrical surface of the traction wheel.
2. The drum type double-support combined high-speed heavy-duty traction machine according to claim 1, wherein: the underframe comprises H-shaped irons which are parallel to each other at two sides, a front cross beam, a middle cross beam and a rear cross beam which are positioned at the front end, the middle part and the rear end between the H-shaped irons at two sides, two front cushion blocks which are padded below a front supporting seat are arranged on the front ends and the front cross beams of the H-shaped irons at two sides, rear cushion blocks padded at two sides below a rear supporting seat are arranged at the rear ends of the H-shaped irons at two sides, and a plurality of vertical supporting plates are arranged in grooves at the outer sides of the H-shaped irons; the I-shaped iron is provided with a notch for avoiding the traction sheave in the area where the traction sheave is located.
3. The drum type double-support combined high-speed heavy-duty traction machine according to claim 2, wherein: the front support seat is internally provided with a front bearing, and the front bearing is arranged in the front support seat through a front bearing outer gland and a front bearing inner gland.
4. The drum type double-support combined high-speed heavy-duty traction machine according to claim 3, wherein: the outer end part of the front supporting seat is provided with an encoder, and the encoder is arranged on the front supporting seat through an encoder cover plate.
5. The drum type double-support combined high-speed heavy-duty traction machine according to claim 4, characterized in that: the front support seat is internally provided with a front oil injection pipe assembly and a front oil drain pipe assembly.
6. The drum type double-support combined high-speed heavy-duty traction machine according to claim 5, wherein: the column surface of the traction sheave is formed by extending the rear end surface of the rope groove part of the traction sheave outwards and backwards.
7. The drum type double-support combined high-speed heavy-duty traction machine according to claim 6, wherein: the stator assembly comprises a stator core and windings arranged on the stator, wherein the combination part of the stator core and the rear supporting seat is positioned at the backward position of the middle part of the main shaft.
8. The drum type double-support combined high-speed heavy-duty traction machine according to claim 7, wherein: the joint of the stator and the main shaft is partially positioned in the cylindrical surface range of the traction sheave.
9. The drum type double-support combined high-speed heavy-duty traction machine according to claim 8, wherein: the drum brake assembly comprises a driving part positioned above the rear supporting seat and action arms which are linked with the driving part and positioned on two sides of the column surface of the traction sheave.
10. The drum type double-support combined high-speed heavy-duty traction machine according to claim 9, wherein: and a jigger component which acts with the rotor is arranged at the position of the rear side wall of the underframe below the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811586003.2A CN109850725B (en) | 2018-12-24 | 2018-12-24 | Drum type double-support combined high-speed heavy-load traction machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811586003.2A CN109850725B (en) | 2018-12-24 | 2018-12-24 | Drum type double-support combined high-speed heavy-load traction machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109850725A CN109850725A (en) | 2019-06-07 |
| CN109850725B true CN109850725B (en) | 2023-11-21 |
Family
ID=66892084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811586003.2A Active CN109850725B (en) | 2018-12-24 | 2018-12-24 | Drum type double-support combined high-speed heavy-load traction machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109850725B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115246614A (en) * | 2021-09-22 | 2022-10-28 | 菱王电梯有限公司 | Traction machine and elevator with same |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0970912A2 (en) * | 1998-07-07 | 2000-01-12 | Hitachi, Ltd. | Elevator apparatus |
| JP2002106611A (en) * | 2000-09-28 | 2002-04-10 | Sanyo Kogyo Kk | Braking device |
| US6520483B1 (en) * | 1999-07-02 | 2003-02-18 | Teijin Seiko Co., Ltd. | Hoisting device for an elevator |
| CN1410338A (en) * | 2001-09-28 | 2003-04-16 | 株式会社明电舍 | Lifter and elevator system using same |
| CN101973479A (en) * | 2010-11-05 | 2011-02-16 | 沈阳蓝光驱动技术有限公司 | Ultra-high-speed heavy-loading outer-rotor permanent magnet synchronous traction machine |
| CN201901504U (en) * | 2010-11-05 | 2011-07-20 | 沈阳蓝光驱动技术有限公司 | Ultra high-speed and high load capacity permanent magnet synchronous traction machine with outer rotor |
| CN102367141A (en) * | 2011-10-19 | 2012-03-07 | 沈阳博林特电梯股份有限公司 | Outer rotor switch magnetic resistance action drive device |
| CN102367142A (en) * | 2011-10-19 | 2012-03-07 | 沈阳博林特电梯股份有限公司 | Inner rotor switch reluctance traction driving device |
| CN102976187A (en) * | 2011-09-02 | 2013-03-20 | 上海三菱电梯有限公司 | Traction machine for elevator |
| CN104609284A (en) * | 2015-01-21 | 2015-05-13 | 郭自刚 | Novel elevator traction machine maintained on site |
| CN204549760U (en) * | 2015-01-21 | 2015-08-12 | 郭自刚 | A kind of can the drum-type towing machine of field maintemance |
| CN104860172A (en) * | 2015-05-18 | 2015-08-26 | 沈阳蓝光驱动技术有限公司 | Inner rotor permanent magnet synchronous traction machine |
| CN105217422A (en) * | 2014-06-09 | 2016-01-06 | 上海三菱电梯有限公司 | Elevator hoist |
| CN108290725A (en) * | 2015-12-03 | 2018-07-17 | 株式会社明电舍 | Traction machine |
| JP2018137937A (en) * | 2017-02-23 | 2018-08-30 | 株式会社明電舎 | Rotation position detector and hoist |
| CN209815455U (en) * | 2018-12-24 | 2019-12-20 | 菱王电梯股份有限公司 | Drum type double-support combined high-speed heavy-load traction machine |
-
2018
- 2018-12-24 CN CN201811586003.2A patent/CN109850725B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0970912A2 (en) * | 1998-07-07 | 2000-01-12 | Hitachi, Ltd. | Elevator apparatus |
| US6520483B1 (en) * | 1999-07-02 | 2003-02-18 | Teijin Seiko Co., Ltd. | Hoisting device for an elevator |
| JP2002106611A (en) * | 2000-09-28 | 2002-04-10 | Sanyo Kogyo Kk | Braking device |
| CN1410338A (en) * | 2001-09-28 | 2003-04-16 | 株式会社明电舍 | Lifter and elevator system using same |
| CN101973479A (en) * | 2010-11-05 | 2011-02-16 | 沈阳蓝光驱动技术有限公司 | Ultra-high-speed heavy-loading outer-rotor permanent magnet synchronous traction machine |
| CN201901504U (en) * | 2010-11-05 | 2011-07-20 | 沈阳蓝光驱动技术有限公司 | Ultra high-speed and high load capacity permanent magnet synchronous traction machine with outer rotor |
| CN102976187A (en) * | 2011-09-02 | 2013-03-20 | 上海三菱电梯有限公司 | Traction machine for elevator |
| CN102367142A (en) * | 2011-10-19 | 2012-03-07 | 沈阳博林特电梯股份有限公司 | Inner rotor switch reluctance traction driving device |
| CN102367141A (en) * | 2011-10-19 | 2012-03-07 | 沈阳博林特电梯股份有限公司 | Outer rotor switch magnetic resistance action drive device |
| CN105217422A (en) * | 2014-06-09 | 2016-01-06 | 上海三菱电梯有限公司 | Elevator hoist |
| CN104609284A (en) * | 2015-01-21 | 2015-05-13 | 郭自刚 | Novel elevator traction machine maintained on site |
| CN204549760U (en) * | 2015-01-21 | 2015-08-12 | 郭自刚 | A kind of can the drum-type towing machine of field maintemance |
| CN104860172A (en) * | 2015-05-18 | 2015-08-26 | 沈阳蓝光驱动技术有限公司 | Inner rotor permanent magnet synchronous traction machine |
| CN108290725A (en) * | 2015-12-03 | 2018-07-17 | 株式会社明电舍 | Traction machine |
| JP2018137937A (en) * | 2017-02-23 | 2018-08-30 | 株式会社明電舎 | Rotation position detector and hoist |
| CN209815455U (en) * | 2018-12-24 | 2019-12-20 | 菱王电梯股份有限公司 | Drum type double-support combined high-speed heavy-load traction machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109850725A (en) | 2019-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112550340B (en) | Bogie and rail vehicle | |
| EP3210925B1 (en) | Elevator assembly | |
| CN109850725B (en) | Drum type double-support combined high-speed heavy-load traction machine | |
| CN101168423A (en) | Minitype permanent magnetism synchronization gear wheel free traction machine | |
| CN110182675B (en) | Traction machine | |
| CN101016137A (en) | Gearless traction machine | |
| CN112537334B (en) | Bogie and rail vehicle | |
| CN113428181B (en) | Vehicle bogie and heavy-load transport vehicle | |
| CN215207946U (en) | Traction machine base, traction machine and elevator system | |
| CN209815455U (en) | Drum type double-support combined high-speed heavy-load traction machine | |
| CN112519825B (en) | Bogie and rail vehicle | |
| CN201136727Y (en) | Small-sized permanent magnet synchronous gearless traction machine | |
| CN115417267A (en) | Novel high-efficient double bracing structure hauler | |
| CN209913666U (en) | Front-mounted disc type ultrathin permanent magnet synchronous traction machine of encoder | |
| CN211895736U (en) | Flexible trolley with built-in permanent magnet motor winding drum | |
| CN209322263U (en) | A kind of elevator traction machine of single-bearing load-bearing | |
| CN109412287B (en) | Radial magnetic flux permanent magnet elevator motor | |
| CN212893386U (en) | Inner rotor traction machine with cantilever structure | |
| CN102398823B (en) | Self-propelled elevator and traveling carriage for use in the same | |
| CN216959475U (en) | Rotor yoke device for heavy elevator | |
| CN219587897U (en) | Walking beam guide cylinder seat | |
| CN214569966U (en) | Elevator traction machine | |
| CN109052120B (en) | Traction machine | |
| CN217627049U (en) | Permanent magnet synchronous traction machine | |
| CN220845033U (en) | Traction machine with double traction wheels for villa |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 528200 North Park of Shishan Science and Technology Industrial Park, Shishan town, Nanhai District, Foshan City, Guangdong Province Applicant after: Lingwang Elevator Co.,Ltd. Address before: 528200 North Park of Shishan Science and Technology Industrial Park, Shishan town, Nanhai District, Foshan City, Guangdong Province Applicant before: WINONE ELEVATOR Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |