CN105775949B - Detachably, flexible toe guard of elevator car and highly reliable no pit elevator - Google Patents
Detachably, flexible toe guard of elevator car and highly reliable no pit elevator Download PDFInfo
- Publication number
- CN105775949B CN105775949B CN201610299053.7A CN201610299053A CN105775949B CN 105775949 B CN105775949 B CN 105775949B CN 201610299053 A CN201610299053 A CN 201610299053A CN 105775949 B CN105775949 B CN 105775949B
- Authority
- CN
- China
- Prior art keywords
- toeguard
- fixed
- movable
- elevator
- elevator car
- 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.)
- Expired - Fee Related
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Classifications
-
- 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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/021—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/30—Constructional features of doors or gates
- B66B13/301—Details of door sills
Landscapes
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The present invention provides detachable, flexible toe guard of elevator car and highly reliable no pit elevator, comprising: fixed toeguard and movable toeguard；The activity toeguard is flexibly connected with the fixed toeguard, and the lower section of the fixed toeguard is stretched out or be rocked to from the downside of the fixed toeguard.Solve the problems, such as that safety is poor in existing no pit running process of elevator.To which the present invention passes through the structure in original fixed toeguard lower part setting activity toeguard, increase the practical cover range of toeguard, increase the safety of no pit elevator when in use, the movable toeguard of lower part is foldable or withdraws simultaneously, therefore, the compact overall structure for making no pit elevator improves the safety of no pit elevator, reduces use, maintenance and operating cost.
Description
Technical field
The present invention relates to no pit elevators field technical fields, more particularly to a kind of detachable, flexible toe guard of elevator car
And highly reliable no pit elevator.
Background technique
No pit refers to that the shaft bottom absolute altitude of elevator shaft is equal to or slightly higher than the elevator of ground elevation outside well, for ground
There is no pit.In pit or the elevator components of car floor are installed to elevator and project on ground in outer hoistway frame or move on to top.
The features such as no pit elevator has installation space small, and service efficiency is high, is therefore widely used in the high-quality house such as villa,
To avoid no pit elevator in the process of running, cannot maintain an equal level completely with ground and generate it is dangerous, the prior art mainly adopts
The method of the fixed toeguard in the bottom of carriage enabling side, blocks the cavity of hoistway, avoids occupant from crashing into and generate danger
Danger.But the length of existing fixed toeguard be it is fixed, when the drop on ground is larger at carriage and enabling, be fixed on sedan-chair
The fixation toeguard of compartment bottom cannot play the role of blocking completely to space part, thus play a role fixed toeguard can not,
Increase the safety decline of elevator, maintenance cost.
Summary of the invention
For above-mentioned defect in the prior art, it is poor that the present invention solves safety in existing no pit running process of elevator
The problem of.In order to achieve the above object, the invention provides the following technical scheme:
The present invention provides a kind of detachable, flexible toe guard of elevator car, comprising: fixed toeguard is characterized in that, also wraps
It includes: movable toeguard；The activity toeguard is flexibly connected with the fixed toeguard, from the upside of the fixed toeguard or
The lower section of the fixed toeguard is stretched out or be rocked in downside.
In a preferred embodiment, the fixed toeguard is set to carriage gate lower end；In fixed toeguard
Two vertical edges of side are arranged parallel guide slots, and the activity toeguard respective side is arranged guide wheel, the activity toeguard with it is described
Fixed toeguard is flexibly connected by guide groove guide wheel.
In a preferred embodiment, further includes: telescopic location sensor, expansion controller and flexible driving electricity
Machine；The output end of the telescopic location sensor is connect with the input terminal of the expansion controller, the expansion controller it is defeated
The connection of the driving end of outlet and telescopic drive motor, the side of the driving end of the telescopic drive motor and the movable toeguard
It is flexibly connected；The telescopic location sensor is set on the leading flank of the fixed toeguard, and current location sensitive is believed
Breath is sent to the expansion controller, and the expansion controller drives the flexible drive according to the current location sensitive information
Dynamic motor drives the movable toeguard to stretch out from the bottom of the fixed toeguard.
In a preferred embodiment, the input terminal of the expansion controller also opens the drive of motor with carriage door leaf
Moved end connection；When the driving end that the carriage door leaf opens motor is to open activation bit, the expansion controller is according to institute
Current location sensitive information and the unlatching activation bit are stated, the telescopic drive motor is driven to drive the movable toeguard
It is stretched out from the bottom of the fixed toeguard.
In a preferred embodiment, the fixed toeguard is tilted to elevator shaft inside sidewalls, makes the work
The bottom edge of dynamic toeguard is fixedly connected with the hoistway wall, wraps nylon strip at the bottom edge of the activity toeguard.
In a preferred embodiment, the bottom edge of the movable toeguard and the fixed toeguard is connected by shaft
It connects, makes the movable toeguard around the shaft foldable to the inside of the fixed toeguard.
In a preferred embodiment, further includes: swing position sensor, tilt control, oscillating motor and
Wobble drive motor；The output end of the swing position sensor is connect with the input terminal of the tilt control, the swing
The output end of controller is connect with the driving end of wobble drive motor, the oil circuit output end and the pendulum of the wobble drive motor
The side of hydrodynamic cylinder pressure is connected to, and the extension bar end of the oscillating motor is flexibly connected with the inside of the movable toeguard；
The swing position sensor is set on the leading flank of the fixed toeguard, sends institute for current location sensitive information
Expansion controller is stated, the tilt control drives the wobble drive motor to drive according to the current location sensitive information
The oscillating motor movement makes the extension bar end of the oscillating motor that the movable toeguard be driven to put along the shaft
It moves to the lower section of the fixed toeguard.
In a preferred embodiment, the input terminal of the tilt control also opens the drive of motor with carriage door leaf
Moved end connection；When the driving end that the carriage door leaf opens motor is to open activation bit, the tilt control is according to institute
Current location sensitive information and the unlatching activation bit are stated, the tilt control is driven to drive the oscillating motor fortune
It is dynamic, make the extension bar end of the oscillating motor drive the movable toeguard along the shaft swing to the fixed spats
The lower section of plate.
In a preferred embodiment, further includes: fixed nylon block；The fixed nylon block and the movable spats
The bottom edge of plate is fixedly connected；The width of the fixed nylon block is 20~60mm, with a thickness of 15~20mm.
Meanwhile the present invention also provides a kind of highly reliable no pit elevators, including, as any of the above-described it is detachable, stretch
The toe guard of elevator car and carriage of contracting；The side bottom margin of detachable, the flexible toe guard of elevator car and carriage is fixed.
The invention has the benefit that detachable, the flexible toe guard of elevator car in the present invention, by fixed toeguard
Lower part increase activity toeguard, to elevator operation in due to floor stop place inaccuracy and generate hoistway it is exposed cavity into
It has gone and has effectively blocked, that is, increased the practical cover range of toeguard, increase the safety of no pit elevator when in use,
The movable toeguard of lower part is foldable or withdraws simultaneously, therefore, makes the compact overall structure of no pit elevator, improves nothing
The safety of pit elevator reduces use, maintenance and operating cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the initial shape of movable toeguard in detachable, flexible toe guard of elevator car in one embodiment of the present invention
State structural schematic diagram；
Fig. 1 a is the transverse direction of movable toeguard in detachable, flexible toe guard of elevator car in one embodiment of the present invention
Structural schematic diagram；
Fig. 2 is the open shape of movable toeguard in detachable, flexible toe guard of elevator car in one embodiment of the present invention
State structural schematic diagram；
Fig. 3 is in another embodiment of the present invention, and movable toeguard is initial in detachable, flexible toe guard of elevator car
Status architecture schematic diagram；
Fig. 4 is the opening of movable toeguard in detachable, flexible toe guard of elevator car in another embodiment of the present invention
Status architecture schematic diagram；
Fig. 5 is the control knot of movable toeguard in detachable, flexible toe guard of elevator car in one embodiment of the present invention
Structure schematic diagram；
Fig. 6 is the control of movable toeguard in detachable, flexible toe guard of elevator car in another embodiment of the present invention
Structural schematic diagram；
Fig. 7 is the opening of movable toeguard in detachable, flexible toe guard of elevator car in another embodiment of the invention
Status architecture schematic diagram.
Fig. 8 is the control of movable toeguard in detachable, flexible toe guard of elevator car in another embodiment of the invention
Structural schematic diagram；
Fig. 9 is the control of movable toeguard in detachable, flexible toe guard of elevator car in another embodiment of the present invention
Structural schematic diagram.
Specific embodiment
Below in conjunction with attached drawing of the invention, technical solution of the present invention is clearly and completely described, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
In one embodiment of the present invention, the main structure of disclosed detachable, flexible toe guard of elevator car are as follows: in sedan-chair
Toeguard 20 is fixed made of 11 soldering stainless steel of bottom margin in compartment 10, as shown in Fig. 1,1a, in fixed 20 inside of toeguard
Parallel guide slots 24 are arranged in two vertical edges in face 23.Guide wheel 31 is arranged in movable 30 respective side of toeguard.Movable toeguard 30 and fixation
Toeguard 20 is flexibly connected by guide groove guide wheel.That is, in the 21 flexible connection activity toeguard 30 of inside of fixed toeguard 20.Make
Movable toeguard 30 from or fixed toeguard 20 lower section stretch out it is as shown in Figure 2.Therefore, when carriage 10 is higher than elevator door hole bottom
When edge, movable toeguard 30 can be slided on into fixed toeguard 20 by the handle hole 29 opened up on fixed toeguard 20
Lower section, thus, the gap of 10 bottom of carriage is given and is blocked.As shown in figure 3, movable toeguard 30 and fixed toeguard 20
Bottom edge 22 is connected by shaft 40, makes movable toeguard 30 around shaft foldable to the inside 21 of fixed toeguard 20.I.e. solid
Flexible connection activity toeguard 30 on the bottom edge 22 of toeguard 20 is determined, as shown in figure 4, movable toeguard 30 is made to be rocked to fixed shield
The lower section of sole 20.It therefore, can be by being opened up on fixed toeguard 20 when carriage 10 is higher than elevator door hole bottom margin
Handle hole 29, by the overturning of movable toeguard 30 in the lower section of fixed toeguard 20, thus, the gap of 10 bottom of carriage is given and is hidden
Gear.
For convenient for automation control, in one embodiment of the invention, in said structure further include: protected fixed
Telescopic location sensor 51 is fixed in the leading flank least significant end of sole 20, which can be used infrared position sensor and give reality
It is existing.In the fixed expansion controller 52 in the bottom of carriage 10, which can be used single-chip microcontroller or Industry Control core
Piece, which is given, to be realized.In the fixed telescopic drive motor 53 in the side of movable toeguard 30, the output driving end of telescopic drive motor 53
It is flexibly connected by rack and pinion mechanism with the side wall of movable toeguard 30.As shown in figure 5, the induction of telescopic location sensor 51
Output end is connect with the input terminal of expansion controller 52, the output end of expansion controller 52 and the driving end of telescopic drive motor 53
Connection.When the leading flank least significant end of fixed toeguard 20 is lower than external elevator aperture bottom walls body, telescopic location sensor
51 are blocked, and therefore, do not generate induction information, illustrate that currently fixing toeguard 20 is not completely exposed, gap can be blocked by belonging to
State；Conversely, telescopic location passes when the leading flank least significant end of fixed toeguard 20 is higher than external elevator aperture bottom walls body
Sensor 51 is not blocked, and therefore, generates induction information, illustrates that currently fixing toeguard 20 is completely exposed, sky can not be blocked by belonging to
The state of gap, then current " front have no occluder " location sensitive information is sent extension and contraction control by telescopic location sensor 51
Device 52.Expansion controller 52 is rotated according to the output shaft of current location sensitive information driving telescopic drive motor 53, the output
Shaft driven gear, rackwork movement, move movable toeguard 30 along the guide rail of fixed 20 two sides of toeguard, from fixed spats
The bottom of plate 20 is stretched out.To play the role of blocking gap.
To keep the control of above-mentioned movable toeguard more accurate, in an embodiment of the present invention, as shown in fig. 6,
The driving end that the input terminal of expansion controller 52 also opens motor 54 with carriage door leaf is connect, wherein carriage door leaf opens motor
54 be the motor for driving carriage door leaf to open to two sides or side.When the driving end that carriage door leaf opens motor 54 is to open driving
When information, i.e., explanation at this point, when carriage door leaf is in the open state, believe according to current above-mentioned location sensitive by expansion controller 52
Breath and above-mentioned unlatching activation bit, two information drive 53 drive activity toeguard 30 of telescopic drive motor from fixed toeguard 20
Bottom stretch out.To increase the accuracy of control, caused by control is given in reduction because of the erroneous judgement of " telescopic location sensor 5 "
Confusion has saved the energy, improves the accuracy of control.In another embodiment of the invention, as shown in figure 3, swinging
Position sensor 58 is set on the leading flank of fixed toeguard 20, sends expansion controller for current location sensitive information
52.Tilt control 55, wobble drive motor 57 and oscillating motor 56 are fixed on the bottom surface of carriage 10.As shown in figure 8, swinging
The output end of position sensor 58 is connect with the input terminal of tilt control 55.The output end and wobble drive of tilt control 55
The driving end of motor 57 connects.The oil circuit output end of wobble drive motor 57 is connected to the side of oscillating motor 56, swings liquid
561 end of extension bar of cylinder pressure 56 is flexibly connected with the inside of movable toeguard 30.Tilt control 55 is according to current position
Induction information drives wobble drive motor 57 that oscillating motor 56 is driven to move, and drives the extension bar end of oscillating motor 56
Movable toeguard 30 is along shaft swing to the lower section of fixed toeguard 20.
Shown in Fig. 9, in one embodiment of the invention, to swing control in said structure convenient for automation control
The driving end that the input terminal of device 55 processed also opens motor 54 with carriage door leaf is connect.When carriage door leaf opens the driving end of motor 54
When to open activation bit, tilt control 55 is according to current location sensitive information and opens activation bit, and driving swings control
Device 55 processed drives oscillating motor 56 to move, and puts the extension bar end drive activity toeguard 30 of oscillating motor 56 along shaft
It moves to the lower section of fixed toeguard 20.To make toeguard of the invention when in use, moreover it is possible to play the positioning action of auxiliary, improve
The safe running performance of elevator, as shown in figure 3, further include damping tape 71, the bottom edge of fixed damping tape 71 and movable toeguard 30
It is fixedly connected, the width of fixed damping tape is 20~60mm, with a thickness of 15~20mm.
In another embodiment, to make toeguard of the invention when in use, moreover it is possible to the positioning action of auxiliary is played,
The safe running performance of elevator is improved, as shown in fig. 7, in one embodiment of the invention, fixing toeguard 20 to elevator
The lateral wall 61 of hoistway 60 tilts, and is fixedly connected with the bottom edge of movable toeguard 30 with hoistway wall 61.It is preferably solid to play
It is set for using, wraps amortisseur bar 70 at the bottom edge of movable toeguard 30.
Meanwhile the present invention also provides a kind of detachable, flexible toe guard of elevator car and carriage, including above embodiment
In detachable, flexible toe guard of elevator car, the side bottom margin of detachable, the flexible toe guard of elevator car and carriage is solid
It is fixed.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. detachable, flexible toe guard of elevator car, comprising: fixed toeguard is characterized in that, further includes: movable toeguard；It is described
Movable toeguard is flexibly connected with the fixed toeguard, and the fixed toeguard is extend out on the downside of the fixed toeguard
Lower section；
The fixed toeguard is set to carriage gate lower end；Parallel guide slots are arranged in two vertical edges of fixed toeguard medial surface,
Guide wheel is arranged in the activity toeguard respective side, and the activity toeguard and the fixed toeguard are connected by the activity of guide groove guide wheel
It connects；
Further include: telescopic location sensor, expansion controller and telescopic drive motor；The output end of the telescopic location sensor
It is connect with the input terminal of the expansion controller, the output end of the expansion controller and the driving end of telescopic drive motor connect
It connects, the driving end of the telescopic drive motor is flexibly connected with the side of the movable toeguard；The telescopic location sensor
It is set on the leading flank of the fixed toeguard, sends the expansion controller for current location sensitive information, it is described
Expansion controller according to the current location sensitive information drive the telescopic drive motor drive the movable toeguard from
The bottom of the fixed toeguard is stretched out.
2. detachable, flexible toe guard of elevator car according to claim 1, which is characterized in that the expansion controller
The driving end that input terminal also opens motor with carriage door leaf is connect；When the driving end that the carriage door leaf opens motor is to open to drive
When dynamic information, the expansion controller is according to the current location sensitive information and the unlatching activation bit, described in driving
Telescopic drive motor drives the movable toeguard from the fixed toeguard except the bottom from upper and lower bottom is stretched out, and bottom is stopped
Shi Xiangqi opposite direction is shunk, and guarantees Stall leveling.
3. detachable, flexible toe guard of elevator car according to claim 2, which is characterized in that the fixed toeguard to
Elevator shaft sidewall slope is fixedly connected with the bottom edge of the movable toeguard with the hoistway wall, the activity toeguard
Bottom edge at wrap nylon strip.
4. detachable, flexible toe guard of elevator car, comprising: fixed toeguard is characterized in that, further includes: movable toeguard；It is described
Movable toeguard is flexibly connected with the fixed toeguard, and the fixed toeguard is rocked to above the fixed toeguard
Lower section；
The activity toeguard is connect with the bottom edge of the fixed toeguard by shaft, makes the movable toeguard around described
Shaft foldable is to the inside of the fixed toeguard；
Further include: swing position sensor, tilt control, oscillating motor and wobble drive motor；The swing position passes
The output end of sensor is connect with the input terminal of the tilt control, the output end and wobble drive motor of the tilt control
The connection of driving end, the oil circuit output end of the wobble drive motor is connected to the side of the oscillating motor, the swing
The extension bar end of hydraulic cylinder is flexibly connected with the inside of the movable toeguard；The swing position sensor is set to described
On the leading flank of fixed toeguard, the tilt control, the tilt control are sent by current location sensitive information
It drives the wobble drive motor to drive the oscillating motor movement according to the current location sensitive information, makes the pendulum
The extension bar end of hydrodynamic cylinder pressure drives the movable toeguard along the shaft swing to the lower section of the fixed toeguard.
5. detachable, flexible toe guard of elevator car according to claim 4, which is characterized in that the tilt control
The driving end that input terminal also opens motor with carriage door leaf is connect；When the driving end that the carriage door leaf opens motor is to open to drive
When dynamic information, the tilt control is according to the current location sensitive information and the unlatching activation bit, described in driving
Tilt control drives the oscillating motor movement, and the extension bar end of the oscillating motor is made to drive the movable spats
Plate is along the shaft swing to the lower section of the fixed toeguard.
6. detachable, flexible toe guard of elevator car according to claim 5, which is characterized in that further include: fixed nylon
Band；The fixed nylon tape is fixedly connected with the bottom edge of the movable toeguard；The width of the fixed nylon tape be 20~
60mm, with a thickness of 15~20mm.
7. highly reliable no pit elevator, which is characterized in that including, as any one of claim 1~6 it is detachable, flexible
Toe guard of elevator car and carriage；The side bottom margin of detachable, the flexible toe guard of elevator car and carriage is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610299053.7A CN105775949B (en) | 2016-05-06 | 2016-05-06 | Detachably, flexible toe guard of elevator car and highly reliable no pit elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610299053.7A CN105775949B (en) | 2016-05-06 | 2016-05-06 | Detachably, flexible toe guard of elevator car and highly reliable no pit elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105775949A CN105775949A (en) | 2016-07-20 |
| CN105775949B true CN105775949B (en) | 2018-12-14 |
Family
ID=56401678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610299053.7A Expired - Fee Related CN105775949B (en) | 2016-05-06 | 2016-05-06 | Detachably, flexible toe guard of elevator car and highly reliable no pit elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105775949B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744185B (en) * | 2017-01-16 | 2019-01-25 | 朱辰晧 | A kind of folding utility toe guard of elevator car |
| EP3530605B1 (en) | 2018-02-23 | 2021-09-15 | Otis Elevator Company | Elevator car toe guard system |
| EP3608282B1 (en) | 2018-08-10 | 2022-06-22 | Otis Elevator Company | Elevator car apron |
| CN109179157A (en) * | 2018-09-26 | 2019-01-11 | 天奥电梯（中国）有限公司 | Shallow pit formula modularization installs elevator additional |
| CN111196544B (en) * | 2018-11-20 | 2023-04-11 | 株式会社铃木综合开发研究所 | Scalable toeguard of elevator car |
| CN112660969B (en) * | 2020-12-30 | 2021-08-27 | 亚洲富士电梯股份有限公司 | Add-on elevator with protective structure, manufacturing equipment and manufacturing process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1982195A (en) * | 2005-10-04 | 2007-06-20 | 维托公开股份有限公司 | Foldable self-locking toe guard for elevator car |
| CN203781599U (en) * | 2014-04-04 | 2014-08-20 | 江南嘉捷电梯股份有限公司 | Telescopic lift car toe guard |
| CN205034922U (en) * | 2015-08-25 | 2016-02-17 | 湖南德力通电梯有限公司 | Perpendicular elevator of shallow pit and car toeguard thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4914257B2 (en) * | 2007-03-20 | 2012-04-11 | 株式会社日立製作所 | Elevator safety system |
-
2016
- 2016-05-06 CN CN201610299053.7A patent/CN105775949B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1982195A (en) * | 2005-10-04 | 2007-06-20 | 维托公开股份有限公司 | Foldable self-locking toe guard for elevator car |
| CN203781599U (en) * | 2014-04-04 | 2014-08-20 | 江南嘉捷电梯股份有限公司 | Telescopic lift car toe guard |
| CN205034922U (en) * | 2015-08-25 | 2016-02-17 | 湖南德力通电梯有限公司 | Perpendicular elevator of shallow pit and car toeguard thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105775949A (en) | 2016-07-20 |
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