CN106379787B - A kind of elevator early warning relief car - Google Patents
A kind of elevator early warning relief car Download PDFInfo
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- CN106379787B CN106379787B CN201611087920.7A CN201611087920A CN106379787B CN 106379787 B CN106379787 B CN 106379787B CN 201611087920 A CN201611087920 A CN 201611087920A CN 106379787 B CN106379787 B CN 106379787B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
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- Elevator Control (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
The invention discloses a kind of elevator early warning relief car, it is related to elevator safety detection field.The out of proportion of the existing quantity because of elevator and maintenance personnel can be solved, causes the detection of elevator to supervise and there is very big loophole, so that easily because of the security incident caused by elevator faults the problem of.Including：Parameters of elevator run detector, processor, statistical system and GPS locator；Parameters of elevator run detector includes elevator door switch collector, weighing unit, sensing unit, elevator interior controller, image acquisition units, distance measuring unit and steel wire rope tension tester；Statistical system includes speed and acceleration determination unit, weight and tension force determination unit, elevator door switch number statistic unit and run time statistics unit；Statistical system is electrically connected with processor, and the first information is sent to processor；Processor determines that elevator needs to be detected, by GPS locator, to the GPS positioning information of the first elevator detection automobile transmission elevator closest with elevator.
Description
Technical field
The present invention relates to elevator safety detection field, more particularly to a kind of elevator early warning relief car.
Background technology
With continuing to bring out for modern high-rise building, the application of elevator also becomes to become increasingly popular, elevator be electronics, electrically,
The application system that the technology heights such as machinery combine, elevator is also the important vehicles for being related to resident's personal safety.
In recent years, due to not in place above elevator reparing and Supervision Measures, elevator safety accident layer is caused to go out not
Thoroughly, cause to seriously affect and lose to people's lives and properties, therefore real-time monitoring, the maintenance of maintenance unit to elevator operation
The real-time monitoring of record, go wrong after fast reaction and maintenance it is very urgent.Due to elevator, to belong to electromechanical integration tight
The very high special equipment of density, needs its care and maintenance by the engineer for especially learning and training to be competent at,
And the recognition of qulifications to these engineers needs just pass through by the examination of State-level.
Undertake the daily maintenance of elevator unit have to pass through the examination of national quality testing department after may be eligible to safeguard elevator
Special equipment, while relevant Maintenance Engineer will also pass through examination and just may be used with relevant maintenance qualification is obtained after actual training
With on duty.Strictly speaking, undertake the maintenance of elevator and maintenance be a technical requirements height, heavy workload work.At present due to
The shortage of capital or Supervision Measures are not in place, and it is all to deal with the routine repairs and maintenance of elevator to cause many maintenance units, in order to drop
Low cost of labor, or even some can be arranged not have the personnel of elevator reparing engineer qualification to carry out operational maintenance, and to some
The daily normal elevator of operation, which is then only registered, not to be overhauled, or only to some, substantially problematic elevator has carried out maintenance.
In conclusion the quantity of existing elevator causes the detection of elevator to supervise with maintaining the out of proportion of personnel
In the presence of very big loophole, so that easily because of the security incident caused by elevator faults the problem of.
The content of the invention
The present invention provides a kind of elevator early warning relief car, can solve existing because the quantity of elevator is with maintenance personnel's
It is out of proportion, cause the detection of elevator to supervise and there is very big loophole, so that easily because of the security incident caused by elevator faults the problem of.
The embodiment of the present invention provides a kind of elevator early warning relief car, including：
Parameters of elevator run detector, processor, statistical system and GPS locator；
The parameters of elevator run detector includes elevator door switch collector, weighing unit, sensing unit, elevator interior
Controller, image acquisition units, distance measuring unit and steel wire rope tension tester；
The elevator door switch collector is used for the switch gate signal for gathering elevator door；The weighing unit is each in elevator
Lift car current load is obtained after closing the door；The sensing unit is arranged on elevator doorway, is for sensing elevator doorway
It is no to have passenger's entrance；The elevator interior controller is used for the traffic direction up and down for controlling elevator and stops floor position；It is described
Distance measuring unit is arranged on the outer lower surface of lift car, for obtain elevator currently stop between floor and building lowermost layer away from
From；The steel wire rope tension tester is used to obtain stressing conditions when elevator is run up and down；
The statistical system includes speed and acceleration determination unit, weight and tension force determination unit, elevator door switch
Number statistic unit and run time statistics unit；
The speed and acceleration determination unit are electrically connected with the elevator interior controller and the distance measuring unit respectively,
For the traffic direction up and down according to the elevator and stop floor position and elevator currently stop floor and building lowermost layer it
Between distance, determine the elevator speed and acceleration；The weight and tension force determination unit respectively with the list of weighing
Member, the elevator interior controller and the steel wire rope tension tester electrically connect, for working as front bearing according to the lift car
Stressing conditions when lotus and the elevator are run up and down, count elevator lift car load, elevator stressing conditions and elevator speed
Between variation relation；The elevator door switch number statistic unit respectively with the elevator interior controller, the elevator door
Collector is switched, sensing unit and image acquisition units electrically connect, and for counting the switch gate number of elevator, the number of starts, stops
Only number；The run time statistics unit is electrically connected with the elevator interior controller and the distance measuring unit respectively, is used for
Count the run time of the elevator in setting time；
The statistical system is electrically connected with the processor, and the statistical system is got the first information and is sent to institute
State processor；Wherein, the first information includes at least one set of in following information：The elevator speed and acceleration；Institute
State elevator lift car load；Variation relation between the elevator stressing conditions and elevator speed；The switch gate number of elevator,
The run time of elevator in the number of starts, stopping time and setting time；
The processor will receive the first information and be contrasted with the information stored, however, it is determined that elevator needs to carry out
Detection, by the GPS locator, definite the first elevator detection automobile position currently closest with the elevator, and to
The first elevator detection automobile sends the GPS positioning information of the elevator.
Preferably, control unit is further included；
After the processor sends the GPS positioning information of the elevator to first elevator detection automobile, further include：
The first signal is sent to described control unit, described control unit sends to be detected to the elevator interior controller
Signal, so that the elevator interior controller is stopped；Wherein, first signal includes elevator interior controller model,
Position and system coding.
Preferably, after the processor sends the GPS positioning information of the elevator to first elevator detection automobile,
Further include：
First elevator detects automobile and sends response signal to the processor, and the processor is in the first of setting
It is interior to delete the first information, and determine that the statistical system deletes the first information within the second time of setting
Remove.
In the embodiment of the present invention, there is provided a kind of elevator early warning relief car, passes through parameters of elevator run detector, Ke Yishi
When obtain elevator speed and acceleration；Elevator lift car load；Change between elevator stressing conditions and elevator speed
Relation；The switch gate number of elevator, the number of starts, the run time of elevator in stopping time and setting time；And in processor
Portion is stored with each parameters of elevator run table, and processor will receive the information of information including above-mentioned parameter and storage one by one
Contrasted, so as to eaily determine the current operating situation of the multiple elevators electrically connected with processor, i.e. according to
Above-mentioned operation information, it may be determined that whether elevator, which needs, is detected, and further, by GPS positioning automobile, can conveniently join
It is to detect automobile to needing to detect closest the first elevator of elevator, avoids in the prior art that there are personnel for elevator detection
Notch is bigger, be easy to cause because it is no detection and caused by elevator faults the problem of.
Brief description of the drawings
Fig. 1 is a kind of elevator early warning relief car structure diagram provided in an embodiment of the present invention；
Fig. 2A~Fig. 2 D are four kinds of connections of parameters of elevator run detector provided in an embodiment of the present invention and statistical system
Relation schematic diagram.
Embodiment
Below in conjunction with the accompanying drawings, the specific embodiment of the present invention is described in detail, it is to be understood that of the invention
Protection domain and from the limitation of embodiment.
Fig. 1 is a kind of elevator early warning relief car structure diagram provided in an embodiment of the present invention, and Fig. 2A~Fig. 2 D are this hair
The parameters of elevator run detector and four kinds of connection relationship diagrams of statistical system that bright embodiment provides.Such as Fig. 1, Fig. 2A, figure
Shown in 2B, Fig. 2 C and Fig. 2 D, which includes：Parameters of elevator run detector 10, processor 20, statistical system
30 and GPS locator 40.
Specifically, such as Fig. 2A, shown in Fig. 2 B, Fig. 2 C and Fig. 2 D, the parameters of elevator run detector 10 includes elevator door
Switch collector 101, weighing unit 102, sensing unit 103, elevator interior controller 104, image acquisition units 105, ranging
Unit 106 and steel wire rope tension tester 107.
In practical applications, elevator door switch collector 101 is arranged on elevator door, for gathering the switch gate of elevator door
Signal；Weighing unit 102 is arranged on lift car bottom surface, works as front bearing for obtaining lift car after elevator is closed the door every time
Lotus；Sensing unit 103 is arranged on elevator doorway, for sensing whether elevator doorway has passenger's entrance；Meanwhile Image Acquisition list
Member 105 is arranged on lift car inner top, enters and exits the situation of personnel and cargo in elevator for gathering in real time；Elevator interior control
Device 104 processed is arranged on inside lift car, in the case where entering the manipulation of personnel, controlling traffic direction up and down and the stop of elevator
Floor position；Distance measuring unit 106 is arranged on the outer lower surface of lift car, and for obtaining elevator, currently to stop floor minimum with building
The distance between layer；Steel wire rope tension tester 107 is used to obtain stressing conditions when elevator is run up and down.
It should be noted that above-mentioned elevator interior controller 104 is arranged on elevator inner wall, it includes corresponding to per floor layer
Numeral, key point, close key, electric bell key, calling key etc..
It should be noted that above-mentioned distance measuring unit 106 can also include a survey for being arranged on the outer upper surface of lift car
Away from unit 106.In embodiments of the present invention, specific restriction is not done to the quantity of distance measuring unit 106.
Further, statistical system 30 provided in an embodiment of the present invention includes speed and acceleration determination unit 301, weight
With tension force determination unit 302, elevator door switch number statistic unit 303 and run time statistics unit 304.
In practical applications, as shown in Figure 2 A, speed and acceleration determination unit 301 respectively with elevator interior controller
104 and distance measuring unit 106 electrically connect, for the traffic direction up and down according to elevator and stop floor position and elevator and currently stop
The distance between floor and building lowermost layer, determine elevator speed and acceleration.It should be noted that if distance measuring unit
106 include two, and are separately positioned on the upper and lower surface of lift car, then speed and acceleration determination unit 301 are respectively with two
A distance measuring unit 106 electrically connects.
In practical applications, such as Fig. 2 B, shown in Fig. 2 C and Fig. 2 D, weight and tension force determination unit 302 respectively with list of weighing
Member 102, elevator interior controller 104 and steel wire rope tension tester 107 electrically connect, for according to lift car current load and
Stressing conditions when elevator is run up and down, count current elevator lift car load, elevator stressing conditions and elevator speed it
Between variation relation；Elevator door switch number statistic unit 303 is gathered with elevator interior controller 104, elevator door switch respectively
Device 101, sensing unit 103 and image acquisition units 105 electrically connect, and for counting the switch gate number of elevator, the number of starts, stops
Only number；Run time statistics unit 304 is electrically connected with elevator interior controller 104 and distance measuring unit 106 respectively, for counting
The run time of elevator in setting time.
Further, statistical system 30 is electrically connected with processor 20, and statistical system 30 is got the first information and is sent
To processor 20；Wherein, the first information includes at least one set of in following information：Elevator speed and acceleration；Lift car
Load；Variation relation between elevator stressing conditions and elevator speed；The switch gate number of elevator, the number of starts, stops
The run time of elevator in number and setting time.
It should be noted that in practical applications, the first information that statistical system 30 is got can only include one group,
Can be including multigroup, in embodiments of the present invention, the particular number of the first information obtained to statistical system 30 does not limit.
Further, processor 20 will receive the first information and be contrasted with the information stored, for example, if first
One group of elevator speed and acceleration information are only included in information, then processor 20 by the elevator speed received and
Acceleration group information is compared with the elevator speed and acceleration information being stored in processor 20, judges two kinds of information
Difference whether be more than given threshold, if more than given threshold, it is determined that elevator need be detected.In the embodiment of the present invention
In, as long as any one group information is more than setting threshold with the direct difference of the information being stored in inside processor 20 in the first information
Value, it is determined that need to be detected elevator.
In practical applications, if processor 20 determines that elevator needs to be detected, by GPS locator 40, determine current
The first elevator detection automobile position closest with elevator, and believe to the GPS positioning of the first elevator detection automobile transmission elevator
Breath.Wherein, the first elevator detection automobile is to receive the automobile that processor 20 sends GPS positioning information.In the embodiment of the present invention
In, if be multiple with the closest automobile quantity of current elevator, processor 20 can arbitrarily select a vapour thereto
Car sends GPS positioning information, and the automobile for receiving GPS positioning information is determined as the first elevator detection automobile by processor 20.
It should be noted that the elevator early warning relief car provided in the embodiment of the present invention, further includes control unit, the control
Unit processed is electrically connected with processor 20 and elevator interior controller 104.Specifically, processor 20 sends the first letter to control unit
Number, control unit sends signal to be detected to elevator interior controller 104, so that elevator interior controller 104 is stopped；Its
In, the first signal includes 104 model of elevator interior controller, position and system coding.
In practical applications, examined when the first elevator detects automobile to setting model, the elevator of system coding and position
After survey, the first elevator detects automobile and sends response signal to processor 20, and processor 20 is within the first time of setting by the
One information deletion, and determine that statistical system 30 deletes the first information within the second time of setting.It should be noted that first
The period that time includes is less than the period included the second time, passes through above-mentioned setting, it is possible to reduce 20 memory negative of processor
Lotus, meanwhile, after elevator has completed one-time detection, then parameters of elevator run detector 10 needs again to examine elevator
Survey, the data being stored in before testing in parameters of elevator run detector 10 and statistical system 30 can be zeroed out, from
And reduce the Memory Load in parameters of elevator run detector 10 and statistical system 30.
It should be noted that in the embodiment of the present invention, the quantity of elevator detection automobile includes multiple, is evenly distributed in setting
In region, and electrically connected with processor 20, processor 20 can determine that every elevator detects automobile by GPS locator 40
Position；Meanwhile the elevator for thering are many portions to be electrically connected with processor 20 in the setting regions.Processor 20 is detected with elevator at the same time
Automobile is established with elevator and electrically connects relation, so that convenient call elevator detection automobile to realize that the detection of elevator is appointed with prestissimo
Business.
In conclusion an embodiment of the present invention provides a kind of elevator early warning relief car, by parameters of elevator run detector,
Elevator speed and acceleration can be obtained in real time；Elevator lift car load；Between elevator stressing conditions and elevator speed
Variation relation；The switch gate number of elevator, the number of starts, the run time of elevator in stopping time and setting time；And locate
Reason device storage inside has each parameters of elevator run table, the information and the letter of storage including above-mentioned parameter that processor will receive
Breath is contrasted one by one, so as to eaily determine the current operating situation of the multiple elevators electrically connected with processor,
That is, according to above-mentioned operation information, it may be determined that whether elevator, which needs, is detected, further, can by GPS positioning automobile
Related to facilitating and need to detect closest the first elevator detection automobile of elevator, avoid elevator detection in the prior art
It is bigger there are shortage of personnel, be easy to cause because it is no detection and caused by elevator faults the problem of.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, the present invention can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more
The computer program production that usable storage medium is implemented on (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or square frame in journey and/or square frame and flowchart and/or the block diagram.These computer programs can be provided
The processors of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices, which produces, to be used in fact
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided and is used for realization in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a square frame or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make these embodiments other change and modification.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and scope.In this way, if these modifications and changes of the present invention belongs to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these modification and variations.
Claims (3)
- A kind of 1. elevator early warning relief car, it is characterised in that including：Parameters of elevator run detector (10), processor (20), statistical system (30) and GPS locator (40)；The parameters of elevator run detector (10) includes elevator door switch collector (101), weighing unit (102), sensing list First (103), elevator interior controller (104), image acquisition units (105), distance measuring unit (106) and steel wire rope tension tester (107)；The elevator door switch collector (101) is used for the switch gate signal for gathering elevator door；The weighing unit (102) is in electricity Terraced close the door every time obtains lift car current load afterwards；The sensing unit (103) is arranged on elevator doorway, for induced electricity Whether terraced entrance has passenger's entrance；The elevator interior controller (104) is used to control the traffic direction up and down of elevator and stops Stay floor position；The distance measuring unit (106) is arranged on the outer lower surface of lift car, for obtain elevator currently stop floor with The distance between building lowermost layer；The steel wire rope tension tester (107) is used to obtain stress feelings when elevator is run up and down Condition；The statistical system (30) includes speed and acceleration determination unit (301), weight and tension force determination unit (302), electricity Terraced door switch number statistic unit (303) and run time statistics unit (304)；The speed and acceleration determination unit (301) respectively with the elevator interior controller (104) and the distance measuring unit (106) electrically connect, for the traffic direction up and down according to the elevator and stop floor position and elevator currently stop floor with The distance between building lowermost layer, determines the elevator speed and acceleration；The weight and tension force determination unit (302) It is electric with the weighing unit (102), the elevator interior controller (104) and the steel wire rope tension tester (107) respectively Connection, for according to stressing conditions when being run above and below the lift car current load and the elevator, counting lift car Load, the variation relation between elevator stressing conditions and elevator speed；The elevator door switch number statistic unit (303) Respectively with the elevator interior controller (104), the elevator door switch collector (101), sensing unit (103) and image are adopted Collection unit (105) electrically connects, for counting the switch gate number of elevator, the number of starts, stopping time；The run time statistics Unit (304) is electrically connected with the elevator interior controller (104) and the distance measuring unit (106) respectively, is being set for counting Fix time the run time of interior elevator；The statistical system (30) electrically connects with the processor (20), and the statistical system (30) is got the first information Send to the processor (20)；Wherein, the first information includes at least one set of in following information：The elevator speed And acceleration；The elevator lift car load；Variation relation between the elevator stressing conditions and elevator speed；Elevator The run time of elevator in switch gate number, the number of starts, stopping time and setting time；The processor (20) will receive the first information and be contrasted with the information stored, however, it is determined that elevator needs to carry out Detection, by the GPS locator (40), determines the first elevator detection automobile position currently closest with the elevator, And the GPS positioning information of the elevator is sent to first elevator detection automobile.
- 2. relief car as claimed in claim 1, it is characterised in that further include control unit (50)；After the processor (20) sends the GPS positioning information of the elevator to first elevator detection automobile, further include：The first signal is sent to described control unit (50), described control unit (50) is to the elevator interior controller (104) Signal to be detected is sent, so that the elevator interior controller (104) is stopped；Wherein, first signal includes elevator Internal controller (104) model, position and system coding.
- 3. relief car as claimed in claim 1, it is characterised in that the processor (20) detects automobile to first elevator After sending the GPS positioning information of the elevator, further include：First elevator detects automobile and sends response signal to the processor (20), the processor (20) in setting the The first information is deleted in one time, and determines the statistical system (30) within the second time of setting by described first Information deletion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611087920.7A CN106379787B (en) | 2016-12-01 | 2016-12-01 | A kind of elevator early warning relief car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611087920.7A CN106379787B (en) | 2016-12-01 | 2016-12-01 | A kind of elevator early warning relief car |
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| Publication Number | Publication Date |
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| CN106379787A CN106379787A (en) | 2017-02-08 |
| CN106379787B true CN106379787B (en) | 2018-05-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11993480B2 (en) | 2019-04-30 | 2024-05-28 | Otis Elevator Company | Elevator shaft distributed health level with mechanic feed back condition based monitoring |
| US12049383B2 (en) | 2019-04-29 | 2024-07-30 | Otis Elevator Company | Elevator shaft distributed health level |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108996351B (en) * | 2018-08-29 | 2021-03-16 | 住友富士电梯有限公司 | Elevator emergency processing method and system and elevator equipment |
| CN111252641A (en) * | 2020-04-28 | 2020-06-09 | 广东梯云科技有限公司 | Elevator maintenance-on-demand intelligent management system and management method thereof |
| CN113406151A (en) * | 2021-06-18 | 2021-09-17 | 秦皇岛开发区前景光电技术有限公司 | Steel strip broken wire detection method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2753706Y (en) * | 2004-10-09 | 2006-01-25 | 秦皇岛开发区前景光电技术有限公司 | Escalator special control instrument |
| JP2009120371A (en) * | 2007-11-16 | 2009-06-04 | Toshiba Elevator Co Ltd | Emergency maintenance service information provision system and its information provision method for elevator |
| CN201261668Y (en) * | 2008-09-12 | 2009-06-24 | 浙江省特种设备检验研究院 | Intelligent elevator detection integrated system |
| CN202643030U (en) * | 2012-07-06 | 2013-01-02 | 秦皇岛开发区前景光电技术有限公司 | System for measuring, regulating and controlling tensile force of steel wire rope of elevator |
| CN104944239A (en) * | 2015-05-12 | 2015-09-30 | 上海吉亿电机有限公司 | Elevator maintenance and detection information announcement system and implementation method |
| CN105645209B (en) * | 2016-03-03 | 2018-05-11 | 宁夏电通物联网科技股份有限公司 | Elevator maintenance system and method based on the support of Internet of Things big data |
| CN105731209A (en) * | 2016-03-17 | 2016-07-06 | 天津大学 | Intelligent prediction, diagnosis and maintenance method for elevator faults on basis of Internet of Things |
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2016
- 2016-12-01 CN CN201611087920.7A patent/CN106379787B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12049383B2 (en) | 2019-04-29 | 2024-07-30 | Otis Elevator Company | Elevator shaft distributed health level |
| US11993480B2 (en) | 2019-04-30 | 2024-05-28 | Otis Elevator Company | Elevator shaft distributed health level with mechanic feed back condition based monitoring |
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| CN106379787A (en) | 2017-02-08 |
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