CN106081792B - A kind of traction system of elevator - Google Patents
A kind of traction system of elevator Download PDFInfo
- Publication number
- CN106081792B CN106081792B CN201610437251.5A CN201610437251A CN106081792B CN 106081792 B CN106081792 B CN 106081792B CN 201610437251 A CN201610437251 A CN 201610437251A CN 106081792 B CN106081792 B CN 106081792B
- Authority
- CN
- China
- Prior art keywords
- cable
- traction
- traction steel
- pouring weight
- directive wheel
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B17/00—Hoistway equipment
- B66B17/12—Counterpoises
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/12—Checking, lubricating, or cleaning means for ropes, cables or guides
- B66B7/1253—Lubricating means
- B66B7/1261—Lubricating means specially adapted for ropes or cables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/12—Checking, lubricating, or cleaning means for ropes, cables or guides
- B66B7/1276—Cleaning means
- B66B7/1284—Cleaning means specially adapted for ropes or cables
Abstract
The invention discloses a kind of traction system of elevator, and it includes traction machine, traction steel-cable and to pouring weight, it is characterised in that：It is described to being respectively provided between pouring weight and driving wheel and between the directive wheel and driving wheel of car the surface disposal facility handled the top layer of traction steel-cable；Described surface disposal facility includes spray body and paraffin removal mechanism；The outer circle wall of the directive wheel is provided with the annular groove being surrounded on for traction steel-cable on directive wheel, the bottom land position of annular groove is provided with least three necks formed along the radial direction inscribe of directive wheel, be provided with fixture block in the neck, the traction steel-cable with the rotation of directive wheel and the upper surface of fixture block against or disengagement.The present invention provides a kind of traction system of elevator, and it on the basis of the frictional force between traction steel-cable and driving wheel is not influenceed, can improve the top layer barrier propterty of traction steel-cable.
Description
Technical field
The present invention relates to the technical field of elevator, a kind of specifically traction system of elevator.
Background technology
The lifting process of elevator be sequentially wound by traction steel-cable the driving wheel of traction machine, the directive wheel of car and
To pouring weight to roller, so as to drive the lifting of car by the frictional force between driving wheel and traction steel-cable.And elevator is made
For special equipment, it examines the life safety that passenger is directly related to using the security of process, therefore for elevator reparing and dimension
The requirement of shield is higher, i.e., its frequency safeguarded is high, parts service life is short, and the replacement frequency of consumable accessory is high.And elevator is being tieed up
Need to lock car and to pouring weight during shield, consequently facilitating traction steel-cable releases, realize the directive wheel to all parts
Overhauled or changed, and in the overhauling elevator of prior art, after the completion of the maintenance of its directive wheel or replacing, the traction steel wire
When rope resets, traction steel-cable and the risk of directive wheel dislocation be present, i.e. traction steel-cable slips out of directive wheel, thus makes to drag
Draw that the rotating shaft of steel wire rope and directive wheel is stuck, or cause the rotating shaft of directive wheel constantly to cause the two with traction steel-cable friction
The premature breakdown of parts.
Further, since traction steel-cable is during the driving wheel around traction machine, it is desirable to driving wheel and traction steel wire
Possess certain frictional force between rope, thus driving wheel by traction steel-cable drive car lift, and traction steel-cable in order to
Meet that needs coat overcoat to the technological requirements such as antirust, anti-corrosion on its top layer again, described overcoat can cause traction steel-cable
Frictional force between driving wheel reduces, and reduces tractive force.As can be seen here, it is above-mentioned between traction steel-cable and driving wheel
Frictional force and traction steel-cable top layer in itself protect this 2 points requirement contradiction to be present.In the prior art can only be at the two
Between compromise and consider, that is, the requirement of shelter for sacrificing part meets the requirement of the frictional force of traction steel-cable.
The content of the invention
The technical problems to be solved by the invention are：A kind of traction system of elevator is provided, it can not influence to drag
On the basis of drawing the frictional force between steel wire rope and driving wheel, the top layer barrier propterty of traction steel-cable is improved.
The technical solution used in the present invention is：A kind of traction system of elevator is provided, it includes being installed on elevator
Traction machine, traction steel-cable in road and below traction machine to pouring weight, it is characterised in that：One end of traction steel-cable with
The inwall of elevator hoistways is fixed, the other end of traction steel-cable with being fixed to pouring weight, the center section of the traction steel-cable according to
It is described between pouring weight and driving wheel and car is led on the driving wheel of the secondary directive wheel for being surrounded on cage bottom and traction machine
To being respectively provided with the surface disposal facility that is handled the top layer of traction steel-cable between wheel and driving wheel；
Described surface disposal facility is including the spray body for the surface spraying wax layer in traction steel-cable and is used for
Remove the paraffin removal mechanism of traction steel-cable surface wax layer, the length side of described paraffin removal mechanism and spray body along traction steel-cable
To setting gradually, and paraffin removal mechanism is located between spray body and driving wheel；
The outer circle wall of the directive wheel is provided with the annular groove being surrounded on for traction steel-cable on directive wheel, and annular is recessed
The bottom land position of groove is provided with least three necks formed along the radial direction inscribe of directive wheel, and circumference of whole necks along directive wheel is
Even distribution, the neck is interior to be provided with fixture block, fixture block and the removable connection of neck, the fixture block back of the body when fixture block is installed in neck
Upper surface from directive wheel axis is placed on outside neck and in annular groove, and the traction steel-cable turns with directive wheel
It is dynamic with the upper surface of fixture block against or disengage.The elevator of prior art generally requires to lock counterweight one step ahead in maintenance process
Block and car, and, it is necessary to one section of height will be sling to pouring weight, consequently facilitating traction steel wire manually in directive wheel Renewal process
Rope 2 releases, and reaches the purpose for changing directive wheel, it is impossible to and find out, need manually to sling to pouring weight, operation inconvenience during this,
And potential safety hazard be present, and by the fixture block structure design on directive wheel in the present invention, it is only needed when needing to change directive wheel
Fixture block is extracted, and rotary caster can make traction steel-cable relax, and complete the replacing of directive wheel, without manual pull-up counterweight
Block, thus during overhauling elevator, can be locked to pouring weight one step ahead, and the risk fallen to pouring weight is avoided, increase maintenance
The security of personnel.
Described spray body is a flush coater, and the inwall of flush coater and elevator hoistways is fixed, and the nozzle of flush coater refers to
To traction steel-cable position.
Described nozzle is at least three, and whole nozzles is uniformly distributed along the circumference of traction steel-cable.
Paraffin removal mechanism includes the sleeve pipe being placed on traction steel-cable, is provided with resistive heater in sleeve pipe, resistive heater leads to
Cross controller and power electric connection.
The recovery room for being used for collecting liquid paraffin is provided with below described sleeve pipe, the inwall two close end position of sleeve pipe is set respectively
There is the oil-recovery tank of annular, connected between recovery room and oil-recovery tank by connecting tube.
Described including to pouring weight is outer to pouring weight and interior to pouring weight, and the outer bottom to pouring weight is provided with to be placed in for interior to pouring weight
Outside to the lower openings in pouring weight, traction steel-cable from the outer top to pouring weight penetrate it is outer pouring weight is fixed to pouring weight and with interior,
The upper opening penetrated for traction steel-cable is provided with to pouring weight outside.
Radial direction of the groove width of the neck along directive wheel from linearly successively decreasing inside outside, and the upper surface of the fixture block is edge
The arc surface of the footpath convex of directive wheel.
Described fixture block refers to the removable connection of neck, and some permanent magnets, described card are embedded on the groove inwall of neck
Block is made up of magnetic material.
After above structure, a kind of traction system of elevator of the invention is compared with prior art with following excellent
Point：First, can be carried by surface disposal facility on the basis of the frictional force between traction steel-cable and driving wheel is not influenceed
The top layer barrier propterty of high traction steel-cable, it is secondly, locked to pouring weight and car in overhauling elevator and not to traction steel-cable
When acting power, pouring weight is released with outer to pouring weight by interior, is easy to stirring, stretching for traction steel-cable, at the same it is right inside
Tense traction steel-cable under the Gravitative Loads of pouring weight and fit in all the time on the directive wheel of each part, avoid traction steel-cable
The risk slipped from directive wheel.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the traction system of elevator of the present invention.
Fig. 2 is the structural representation of the counterweight block portion point of the present invention.
Fig. 3 is the mplifying structure schematic diagram of the nozzle segment in the spray body of the present invention.
Fig. 4 is the structural representation of paraffin removal mechanism section of the present invention.
Fig. 5 is the structural representation of the directive wheel part of the present invention.
Fig. 6 is the schematic cross-sectional view in " B-B " direction in Fig. 5.
Wherein, 1, traction machine, 1.1, driving wheel, 2, traction steel-cable, 3, to pouring weight, 3.1, outer to pouring weight, 3.1.1, on
Portion's opening, 3.2, interior to pouring weight, 4, car, 4.1, directive wheel, 4.1.1, annular groove, 4.1.2, neck, 5, spray body,
5.1st, nozzle, 6, paraffin removal mechanism, 7, sleeve pipe, 7.1, oil-recovery tank, 8, resistive heater, 9, controller, 10, power supply, 11, recovery
Room, 12, connecting tube, 13, lift car rope head plate, 14, fixture block, 14.1, upper surface, 15, permanent magnet.
Embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.
The present invention provides a kind of traction system of elevator, and it includes traction machine 1, the traction steel being installed in elevator hoistways
Cord 2 and located at the lower section of traction machine 1 to pouring weight 3, it is characterised in that：One end of traction steel-cable 2 and the inwall of elevator hoistways
Fixed, for the other end of traction steel-cable 2 with being fixed to pouring weight 3, the center section of the traction steel-cable 2 is surrounded on car successively
It is described between pouring weight 3 and driving wheel 1.1 and car 4 on the directive wheel 4.1 of 4 bottoms and the driving wheel 1.1 of traction machine 1
The surface treating machine handled the top layer of traction steel-cable 2 is respectively provided between directive wheel 4.1 and driving wheel 1.1
Structure；
Described surface disposal facility includes being used for the spray body 5 and use in the surface spraying wax layer of traction steel-cable 2
In the paraffin removal mechanism 6 for removing the surface wax layer of traction steel-cable 2, described paraffin removal mechanism 6 and spray body 5 are along traction steel-cable 2
Length direction set gradually, and paraffin removal mechanism 6 be located between spray body 5 and driving wheel 1.1；
The outer circle wall of the directive wheel 4.1 is provided with the annular groove being surrounded on for traction steel-cable 2 on directive wheel 4.1
4.1.1, annular groove 4.1.1 bottom land position is provided with least three necks formed along the radial direction inscribe of directive wheel 4.1
4.1.2, circumferences of whole neck 4.1.2 along directive wheel 4.1 is uniformly distributed, and fixture block 14, fixture block 14 are provided with the neck 4.1.2
With the removable connections of neck 4.1.2, when fixture block 14 is installed in neck 4.1.2, the fixture block 14 deviates from the axis of directive wheel 4.1
Upper surface 14.1 be placed on that neck 4.1.2 is outer and in annular groove 4.1.1, and the traction steel-cable 2 is with directive wheel
4.1 rotation and the upper surface 14.1 of fixture block 14 against or disengage.
Described surface disposal facility is fixed on the inwall of elevator hoistways or is installed on the housing of traction machine 1, and it sets
The position of driving wheel is disposed adjacent to, can remove the traction steel-cable into driving wheel position by surface disposal facility
Top layer paraffin, and the traction steel-cable coating last layer paraffin overcoat after driving wheel.Thus traction steel wire is realized
Rope top layer protection, while can also make traction steel-cable be located at driving wheel partial frictional power it is good.
Preferably, one end of described traction steel-cable 2 is fixed with lift car rope head plate 13, lift car rope head plate 13 fixes peace
On inwall loaded on elevator hoistways.
Described spray body 5 is a flush coater, and the inwall of flush coater and elevator hoistways is fixed, and the nozzle of flush coater
5.1 point to the position of traction steel-cable 2.Described flush coater can select the spraying equipment of commercially available any a paraffin.
So just without repeating in detail.
Described nozzle 5.1 is at least three, and circumference of whole nozzles 5.1 along traction steel-cable 2 is uniformly distributed.
Paraffin removal mechanism 6 includes the sleeve pipe 7 being placed on traction steel-cable 2, and resistive heater 8, adding thermal resistance are provided with sleeve pipe 7
Silk 8 is electrically connected by controller 9 with power supply 10.Its operation principle be by sleeve pipe 7 heat traction steel-cable 2 so as to complete for
The paraffin on the surface of traction steel-cable 2 removes.
The described lower section of sleeve pipe 7 is provided with the recovery room 11 for being used for collecting liquid paraffin, the inwall two close end position point of sleeve pipe 7
She You annular oil-recovery tank 7.1, connected between recovery room 11 and oil-recovery tank 7.1 by connecting tube 12.
Described including to pouring weight 3 is outer to pouring weight 3.1 and interior to pouring weight 3.2, and the outer bottom to pouring weight 3.1 is provided with for interior right
Pouring weight 3.2 is placed in the outer lower openings in pouring weight 3.1, and traction steel-cable 2 penetrates outer counterweight from the outer top to pouring weight 3.1
Block 3.1 is simultaneously fixed with interior to pouring weight 3.2, outer to be provided with the upper opening 3.1.1 penetrated for traction steel-cable 2 to pouring weight 3.1.
Radial direction of the groove width of the neck 4.1.2 along directive wheel 4.1 from linearly successively decreasing inside outside, and the fixture block 14
Upper surface 14.1 is the arc surface along the footpath convex of directive wheel 4.1.
Described fixture block 14 refers to the removable connections of neck 4.1.2, and some permanent magnetism are embedded on neck 4.1.2 groove inwall
Body 15, described fixture block 14 are made up of magnetic material.Fixture block 14 and permanent magnet adhesive.Preferably, the fixture block 14 includes core
Block and matrix, pellet are made up of magnetic material, in the pellet insertion and matrix.
The operation principle of its overhauling elevator process is：
First, locked car, driven by chain block it is reversely up to pouring weight, make car and it is outer to pouring weight no longer to draging
Draw steel wire rope and act power, consequently facilitating traction steel-cable releases, in the process, it is interior to pouring weight in the effect from gravity
Lower tension traction steel-cable, and drive traction steel-cable to be close to by less pretightning force on each directive wheel, then, operation
Personnel carry out maintenance repair, when needing to carry out local directive wheel replacing, first pull traction steel-cable to overcome interior to pouring weight offer
Less pretightning force and the part of the directive wheel that makes traction steel-cable closely need to overhaul releases with directive wheel, then complete to be oriented to
The replacing of wheel, then traction steel-cable is around on new directive wheel, finally reset car and outer to pouring weight, complete maintenance.Herein
During, the interior pretightning force provided pouring weight, which is only in that, overcomes the gravity of traction steel-cable itself to be used to make traction steel-cable tight
It is taut, so pretightning force is smaller, pull the part that can make traction steel-cable and directive wheel to depart from by manpower.Certainly also may be used
With by manual labor-saving tool completion, such as chain block, lever etc..
Preferred embodiments of the present invention are described above, but are not to be construed as limiting the scope of the invention.This hair
Bright to be not only limited to above example, its concrete structure allows to change, all institutes in the protection domain of demand for independence of the present invention
The various change of work is within the scope of the present invention.
Claims (8)
1. a kind of traction system of elevator, traction machine (1) that it includes being installed in elevator hoistways, traction steel-cable (2) and
Being fixed to pouring weight (3), one end of traction steel-cable (2) and the inwall of elevator hoistways below traction machine (1), traction steel wire
The other end of rope (2) to pouring weight (3) with fixing, it is characterised in that：The center section of the traction steel-cable (2) is surrounded on successively
It is described to pouring weight (3) and driving wheel (1.1) on the directive wheel (4.1) of car (4) bottom and the driving wheel (1.1) of traction machine (1)
Between and the directive wheel (4.1) and driving wheel (1.1) of car (4) between be respectively provided with table to traction steel-cable (2)
The surface disposal facility that layer is handled；
Described surface disposal facility includes being used for the spray body (5) and use in the surface spraying wax layer of traction steel-cable (2)
In the paraffin removal mechanism (6) for removing traction steel-cable (2) surface wax layer, described paraffin removal mechanism (6) and spray body (5) are along traction
The length direction of steel wire rope (2) is set gradually, and paraffin removal mechanism (6) is located between spray body (5) and driving wheel (1.1)；
The outer circle wall of the directive wheel (4.1) is annular recessed on directive wheel (4.1) provided with being surrounded on for traction steel-cable (2)
Groove (4.1.1), the bottom land position of annular groove (4.1.1) are provided with least three along the radial direction inscribe formation of directive wheel (4.1)
Neck (4.1.2), circumference of whole necks (4.1.2) along directive wheel (4.1) are uniformly distributed, and are provided with the neck (4.1.2)
Fixture block (14), fixture block (14) and neck (4.1.2) removable connection, when fixture block (14) be installed on neck (4.1.2) it is interior when described in
Fixture block (14) is placed on neck (4.1.2) outside and is located at annular groove away from the upper surface (14.1) of directive wheel (4.1) axis
In (4.1.1), the traction steel-cable (2) with the rotation of directive wheel (4.1) and the upper surface (14.1) of fixture block (14) against
Or disengage.
A kind of 2. traction system of elevator according to claim 1, it is characterised in that：Described spray body (5) is
The inwall of one flush coater, flush coater and elevator hoistways is fixed, and the nozzle (5.1) of flush coater points to traction steel-cable (2) place
Position.
A kind of 3. traction system of elevator according to claim 2, it is characterised in that：Described nozzle (5.1) is extremely
Few three, circumference of the whole nozzle (5.1) along traction steel-cable (2) is uniformly distributed.
4. the traction system of elevator according to claim 1, it is characterised in that：Paraffin removal mechanism (6) includes being placed on traction
Sleeve pipe (7) on steel wire rope (2), is provided with resistive heater (8) in sleeve pipe (7), resistive heater (8) by controller (9) and
Power supply (10) electrically connects.
A kind of 5. traction system of elevator according to claim 4, it is characterised in that：Set below described sleeve pipe (7)
There is the recovery room (11) for collection liquid state paraffin, the inwall two close end position of sleeve pipe (7) is respectively equipped with the oil-recovery tank of annular
(7.1), connected between recovery room (11) and oil-recovery tank (7.1) by connecting tube (12).
A kind of 6. traction system of elevator according to claim 1, it is characterised in that：Described includes to pouring weight (3)
Outside to pouring weight (3.1) and interior to pouring weight (3.2), the outer bottom to pouring weight (3.1) be provided with for it is interior pouring weight (3.2) is placed in it is outer right
Lower openings in pouring weight (3.1), traction steel-cable (2) from the outer top to pouring weight (3.1) penetrate it is outer to pouring weight (3.1) and with
It is interior fixed to pouring weight (3.2), it is outer that the upper opening (3.1.1) penetrated for traction steel-cable (2) is provided with to pouring weight (3.1).
A kind of 7. traction system of elevator according to claim 1, it is characterised in that：The groove of the neck (4.1.2)
The wide radial direction along directive wheel (4.1) from linearly successively decreasing inside outside, and the upper surface (14.1) of the fixture block (14) is along being oriented to
Take turns the arc surface of the footpath convex of (4.1).
A kind of 8. traction system of elevator according to claim 7, it is characterised in that：Described fixture block (14) and neck
(4.1.2) removable connection refers to, some permanent magnets (15), described fixture block (14) are embedded on the groove inwall of neck (4.1.2)
It is made up of magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610437251.5A CN106081792B (en) | 2016-06-17 | 2016-06-17 | A kind of traction system of elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610437251.5A CN106081792B (en) | 2016-06-17 | 2016-06-17 | A kind of traction system of elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106081792A CN106081792A (en) | 2016-11-09 |
| CN106081792B true CN106081792B (en) | 2018-02-06 |
Family
ID=57237272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610437251.5A Active CN106081792B (en) | 2016-06-17 | 2016-06-17 | A kind of traction system of elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106081792B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101528583A (en) * | 2006-09-25 | 2009-09-09 | 欧诺那S.公司 | Drive and suspension element for elevator apparatuses and elevator apparatus |
| CN203333109U (en) * | 2013-05-28 | 2013-12-11 | 日立电梯（中国）有限公司 | Elevator having automatic cleaning function |
| CN204251146U (en) * | 2014-11-14 | 2015-04-08 | 苏州东奥德森电梯有限公司 | Novel towed elevator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0912247A (en) * | 1995-06-28 | 1997-01-14 | Mitsubishi Denki Bill Techno Service Kk | Elevator main wire rope oiling jig |
| JP2925011B2 (en) * | 1997-06-30 | 1999-07-26 | 建設省東北地方建設局長 | Cleaning method of wire rope and cleaning device therefor |
-
2016
- 2016-06-17 CN CN201610437251.5A patent/CN106081792B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101528583A (en) * | 2006-09-25 | 2009-09-09 | 欧诺那S.公司 | Drive and suspension element for elevator apparatuses and elevator apparatus |
| CN203333109U (en) * | 2013-05-28 | 2013-12-11 | 日立电梯（中国）有限公司 | Elevator having automatic cleaning function |
| CN204251146U (en) * | 2014-11-14 | 2015-04-08 | 苏州东奥德森电梯有限公司 | Novel towed elevator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106081792A (en) | 2016-11-09 |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhao Huoying Inventor after: Yuan Lufeng Inventor after: Cao Shiqing Inventor before: Yuan Lufeng Inventor before: Cao Shiqing |
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| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 315177, No. 130, Central Road, Gulin Town, Haishu District, Zhejiang, Ningbo Patentee after: Cao Shiqing Address before: 315177, No. 130, Central Road, Gulin Town, Ningbo, Zhejiang, Yinzhou District Patentee before: Cao Shiqing |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190306 Address after: 215000 Hushu Guanzhen Huqing Road, Suzhou High-tech Zone, Jiangsu Province Patentee after: Gelarui elevator Limited by Share Ltd Address before: 315177 130 Gulin Town Central Road, Haishu District, Ningbo City, Zhejiang Province Patentee before: Cao Shiqing |