CN107777514A - Brake component and the device of polishing for brake component - Google Patents
Brake component and the device of polishing for brake component Download PDFInfo
- Publication number
- CN107777514A CN107777514A CN201610718687.1A CN201610718687A CN107777514A CN 107777514 A CN107777514 A CN 107777514A CN 201610718687 A CN201610718687 A CN 201610718687A CN 107777514 A CN107777514 A CN 107777514A
- Authority
- CN
- China
- Prior art keywords
- mounting hole
- polishing
- brake component
- bearing
- brake
- 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.)
- Pending
Links
- 238000005498 polishing Methods 0.000 title claims abstract description 66
- 238000009991 scouring Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 33
- 230000013011 mating Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000005060 rubber Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
-
- 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
- B66B7/1292—Cleaning means specially adapted for guides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/0037—Devices for conditioning friction surfaces, e.g. cleaning or abrasive elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/04—Check valves with guided rigid valve members shaped as balls
- F16K15/044—Check valves with guided rigid valve members shaped as balls spring-loaded
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
Device of polishing the invention discloses brake component and for brake component.The present invention is used for the device of polishing of brake component, including bearing, and bearing has brake area, and bearing forms mounting hole, and mounting hole is penetrated by brake area with extraneous；Check valve is set in the mounting hole of the bearing, mounting hole is separated into two spaces by check valve, and the inner space of mounting hole is used to contain scouring liquor, cleans the outer space that liquid energy flows to mounting hole by check valve；The inner space of mounting hole is penetrated by guide hole or conduit with extraneous；The outer space of mounting hole fills a movable part of polishing, and the lateral surface for part of polishing protrudes from the brake area of bearing.The present invention solves the problems, such as greasy dirt of the existing safety guard under work condition state, the advantage is that stability, the performance of improvement safeguard protection for reducing labor intensity, improving braking.
Description
Technical field
The invention belongs to field of mechanical technique, and in particular to a kind of band polish function brake component and for brake component
Device of polishing.
Background technology
Guide rail for elevator carries out antirust treatment on its surface, led to after wet guide rail installation on its surface for antirust when dispatching from the factory
Lubrication is crossed to reduce friction, dry guide rail directly carries out antirust treatment on surface, and elevator fall arrest, overspeed protection and car are unexpected
The devices such as mobile protection are by producing friction catch with guide rail to prevent the generation of contingency.Act on the safety guarantor of guide rail
Protection unit, which needs to remove antirust oil or lubricating oil, could realize stable braking effect, and the quality of different oil product models and oil or
Coefficient of friction when environmental working condition is to braking can have an impact to some extent, braking of the safety guard under working condition
In the presence of certain security risk.On the other hand, in building site, installation will also remove antirust oil, and installation personnel workload is larger, also difficult
In the quality for ensureing removing antirust oil.
Based on above-mentioned present situation, in order to inherently solve problem, the present invention proposes a kind of brake component and part of polishing
Technical scheme, in braking, energy automatic cleaning oil and pollution, it is ensured that the braking stabilization of safety guard, performance boost, reduction
Security risk.
The content of the invention
A kind of device of polishing the invention provides brake component and for brake component, which solve current guide rail etc. and polish
Workload is big, does not influence the problems such as working condition safety risk is big when friction catch mechanism, braking thoroughly, in braking procedure.
Brake component of the present invention and the device of polishing for brake component, it is used to remove rail oil or pollution, on the one hand dropped
The labor intensity of low people, simultaneously, it is ensured that polish more comprehensively；On the other hand, it is not necessary to polish when being installed, connect in brake component
Brake apparatus is polished automatically before touching, and reduces artificial cost of polishing, and is polished comprehensively so as to realize, is made safety guard braking surely
Calmly, influenceed by working condition smaller.
The present invention adopts the following technical scheme that：
A kind of device of polishing for brake component, it is characterized in that including bearing, bearing has brake area, and bearing is formed
Mounting hole, mounting hole are penetrated by brake area with extraneous；Check valve is set in the mounting hole of the bearing, check valve will be installed
Hole is separated into two spaces, and the inner space of mounting hole is used to contain scouring liquor, cleans liquid energy and flows to mounting hole by check valve
Outer space；The inner space of mounting hole is penetrated by guide hole or conduit with extraneous；The outer space of mounting hole fills an activity
Formula is polished part, and the lateral surface for part of polishing protrudes from the brake area of bearing.
Preferably, described check valve includes seal, unidirectionally controlled part, push rod, the outer wall of seal and mounting hole
Inner wall sealing coordinates, and the lateral surface of seal is parallel with the medial surface for part of polishing and leaves spacing, and the middle part for part of polishing has
One through hole, mounting hole space of the through hole insertion in seal both sides；Unidirectionally controlled part is inserted in the through hole of seal, unidirectional control
Seal and coordinate between the outer wall of product and the through hole edge of seal, top pressure elasticity between the interior bottom of unidirectionally controlled part and bearing mounting hole
Part；Polish part medial surface in the middle part of be fixedly connected with push rod, push rod face simultaneously can stretch into the through hole of seal and inside pushing tow is unidirectional
Control piece departs from through hole.
Preferably, oil scupper is formed in the chamfered shape in the mounting hole opening upper edge of bearing and/or lower edge, oil scupper
End extend to the side of bearing.
The invention also discloses a kind of brake component, there is brake area, equipped with part of polishing on brake component, part of polishing it is outer
Side protrudes from the brake area of brake component.
Preferably, brake component forms mounting hole, and mounting hole is penetrated by brake area with extraneous；Described part dress of polishing
At described mounting hole.
Preferably, polish and load elastic component between the medial surface of part and the inner bottom surface of mounting hole.
Preferably, part of polishing fills the mounting hole of the brake component full.
Preferably, the chamfered shape in the mounting hole opening upper edge of brake component and/or lower edge and form oil scupper, oil scupper
End extend to the side of brake component.
The invention also discloses a kind of device of polishing for brake component, including base, the cross section of base is concave, bottom
The first side inwall of seat is fixed first and polished part；The second side of base is horizontally through adjusting bolt, the inner of adjusting bolt
The vertical first side for being fixedly connected with adjustment plate, the second side of adjustment plate and the first part of polishing are relative and leave spacing.
Preferably, the second side of adjustment plate is fixedly connected with second and polished part.
Preferably, adjusting bolt is spun adjusting nut, and adjusting nut is in spill base；Adjustment plate is movable to be matched with
The medial surface of spill base widthwise edge, adjusting bolt outer casing spring, the both ends of spring peak at adjustment plate, adjusting nut respectively.
Preferably, the lateral surface of base first side is vertically fixedly connected with lever.
The present invention solves the problems, such as greasy dirt of the existing safety guard under work condition state, the advantage is that reduction work
Intensity, the stability for improving braking, the performance for improving safeguard protection.Its side that erasing guide rail oils or polluted in advance before braking
Method solves problem, before rubbing surface contact, grants the certain active force of part of polishing in guide rail by precompressed force adjusting device, makes
The wiping of friction catch block before braking device of polishing first contacts guide rail, and after wiping the oiling of guide rail, drag friction part rubs with guide rail
Braking is wiped, safety guard is reliably stablized braking.
For the angle of polish efficiency or safeguard protection, the present invention preferably solves current safety protection device or people
The inaccessiable effect of work operation institute, mechanism of the present invention have simple in construction, stably and controllable, easy for installation, reduction safety device
The advantages that risk.
Brief description of the drawings
Fig. 1 is embodiment 1 (two-way) structure chart.
Fig. 2 is the sectional view of embodiment 1.
Fig. 3 is the structure chart of embodiment 2.
Fig. 4 is embodiment 3 (unidirectional) structure chart.
Fig. 5 is the structure chart of embodiment 4.
Fig. 6 is the structure chart of embodiment 5.
In Fig. 1,2：1. brake component 2. is polished, part, 3. elastic components, 101. brake areas, 102. are polished face, 103. oil extractions
Groove.
In Fig. 3,4：1. the elasticity of brake component 2. is polished, part, 101. brake areas, 102. are polished face, 103. oil scuppers.
In Fig. 5：41. base, 42. levers, 43. polish part, 44. adjustment plates, 45. force application springs, 46. adjusting nuts,
47. adjusting bolt.
In Fig. 6：11. bearing, 21. are polished part, 22. seals, 23. unidirectionally controlled parts, 24. elastic components, 25. conduits, 26.
Scouring liquor, 102. are polished face, 103. oil scuppers, 104. push rods.
Embodiment
The preferred embodiment of the present invention is elaborated below in conjunction with the accompanying drawings.
Embodiment 1
Referring to Fig. 1,2, the polish brake component 1 of function of the present embodiment band forms two mounting holes, and mounting hole passes through brake component 1
Brake area 101 penetrated with extraneous, the opening of mounting hole is equipped with polish part 2 (such as cavernous body, fiber, rubber, polyamine
Ester), polish and load elastic component 3 (such as spring), the lateral surface 102 for part 2 of polishing between the medial surface of part 2 and the inner bottom surface of mounting hole
Protrude from mounting hole and lateral surface face mating plate (such as guide rail).
The chamfered shape in upper installing hole opening lower edge of brake component 1, form oil scupper 103；Its lower mounting hole opening top
Along also chamfered shape, so as to form another oil scupper.The both ends of oil scupper extend to the two sides of brake component 1.
Under normal conditions, elastic component 3 is in non-compressed state, and part 2 of polishing protrudes from the brake area 101 of brake component 1；When
During braking maneuver, part 2 of being polished to side part compression, certain pressure is produced to part 2 of polishing in the presence of elastic component 3, passes through wiping
Oily part surface 102 is contacted with to male part, and oil is erased into oil scupper 103, by oil scupper by greasy dirt from the both sides of brake component 1
Face is discharged, so as to wipe the oil on mating plate surface or pollution.
Embodiment 2
Referring to Fig. 3, the brake component 1 of the present embodiment forms two mounting holes, the brake area that mounting hole passes through brake component 1
101 penetrate with extraneous, and mounting hole loads elasticity and polished part 2 (such as rubber), and the polish lateral surface 102 of part 2 of elasticity protrudes from installation
Hole.
The all chamfered shape in upper installing hole opening lower edge of brake component 1, form oil scupper 103；In its lower mounting hole opening
Edge also all chamfered shape, form oil scupper.The both ends of oil scupper extend to the two sides of brake component 1.
Under normal circumstances, elasticity part 2 of polishing is in non-compressed state, and the polish lateral surface of part 2 of elasticity protrudes brake component 1
Brake area 101；When braking, the elasticity of compression first is polished part 2, is produced in the presence of elasticity polishes part 2 certain
Pressure, contacted by the surface 102 of elastic part of polishing with male part (such as guide rail), oil is erased to oil scupper 103, passes through oil extraction
Groove discharges greasy dirt from the two sides of brake component 1, so as to wipe the oil on mating plate surface or pollution.
Embodiment 3
Referring to Fig. 4, the present embodiment and the difference of embodiment 2 are：The present embodiment is provided only with an elasticity and polished part
2。
Other contents of the present embodiment refer to embodiment 2.
Embodiment 4
Referring to Fig. 5, the device of polishing that the present embodiment is used for brake component is clipping scheme of polishing, and it includes：Base 41, behaviour
Make handle 42, part 43 of polishing, adjustment plate 44, force application spring 45, adjusting nut 46, adjusting bolt 47 etc., the cross section of base 41 is in
Spill, the lateral surface on its one side are vertically fixedly connected with lever 42, and the medial surface on the side fixes polish part 43 (such as cavernous body, fibre
Dimension, rubber, Polyurethane etc.).The another side of base 41 is horizontally through adjusting bolt 47, and adjusting bolt 47 spins adjusting nut 46,
Adjusting nut 46 is in spill base 41.The vertical one side for being fixedly connected with adjustment plate 44 in the inner of adjusting bolt 47, adjustment
The movable medial surface for being matched with the widthwise edge of spill base 41 of plate 44, the another side of adjustment plate 44 are fixedly connected with another polish
Part, this part of polishing is relative with above-mentioned part 43 of polishing and leaves spacing, is used between the two through guide rail.
The overcoat force application spring 45 of adjusting bolt 47, the both ends of force application spring 45 are peaked between adjustment plate 44 and adjusting nut 46.
According to manually polishing, adjusting nut 46 is rotated to compress force application spring 45 by adjusting bolt 47, and then
Make to polish by adjustment plate 44 and certain pressure is produced between part 43 and guide rail, along above and below guide rail direction under artificial operation
Move and wipe the greasy dirt on its surface.If polishing automatically, this device of polishing is installed on to the dress of other retinue (such as elevator) operations
Put and polished automatically.
Embodiment 5
Referring to Fig. 6, the device of polishing that the present embodiment is used for brake component is polished scheme for solvent, molten by increasing in part of polishing
The method of agent is polished, and it includes：Bearing 11, part 21 of polishing, seal 22, unidirectionally controlled part 23, elastic component 24, conduit 25, wiping
Washing lotion 26, face 102 of polishing, oil scupper 103, push rod 104 etc., bearing 11 form mounting hole, and mounting hole is equipped with movable part of polishing
21, polish part such as cavernous body, fiber, rubber, Polyurethane etc., the face 102 of polishing for part 21 of polishing protrudes from mounting hole.
The built-in seal 22 of mounting hole of bearing, the outer wall of seal 22 and the inner wall sealing of mounting hole coordinate.Seal
22 lateral surface is parallel with the medial surface for part 21 of polishing and leaves spacing, and its medial surface is in the round platform planar of indent, part of polishing
21 middle part has a through hole, and through hole insertion is in the both sides mounting hole space of seal 22.Polish solid in the middle part of the medial surface of part 21
Surely push rod 104, the face of push rod 104 and the through hole that seal 22 can be stretched into are connected.
Unidirectionally controlled part 23 is inserted in the through hole of seal 22, and unidirectionally controlled part can be ball, unidirectionally controlled part it is outer
Seal and coordinate between the through hole edge of wall and seal, by the effect of seal 22 and unidirectionally controlled part 23, bearing 11 is formed
The storage fluid space of relative closure, the space are used to store scouring liquor 26.When the face 102 of polishing for part 21 of polishing connects with mating plate
When touching, to medial motion, it drives push rod 104 to be synchronized with the movement, and under the promotion of push rod 104, unidirectionally controlled part 23 can be inwardly
Move and depart from through hole.Top pressure elastic component 24 between the interior bottom of unidirectionally controlled part 23 and bearing mounting hole, the elastic component of the present embodiment
From spring.
The guide hole or conduit 25 of the interior bottom connection transverse direction of bearing mounting hole, guide hole or conduit 25 are extended out to outside bearing
Boundary.
In all chamfered shape in mounting hole opening lower edge of bearing 11, oil scupper 103 is formed, the both ends of oil scupper extend to
The two sides of brake component 1.
When the face 102 of polishing for part 21 of polishing contacts with mating plate, by polishing, the effect compression of the push rod 104 on part 21 is single
To control piece 23, compressed elastic component 24, so as to open the scouring liquor 26 with certain pressure, scouring liquor 26 is in certain pressure
Under power effect, noted by the seal of unidirectionally controlled part 104 to part 21 of polishing, by polishing, part 21 acts on mating plate, is wiping
During washing outside the caused useless outflow brake component for going liquid to pass through oil scupper 103, so as to wipe the oily or dirty of brake component surface
Dye, reduce influence during contact of the brake component with mating plate to braking ability, reduce the safety wind during friction catch
Danger.
The present invention solves friction catch with mating plate because the change under working condition brings friction mechanism to change, and makes
The problem of into brake force deficiency, it improves connecing for friction element and mating plate by polishing device or brake component structure automatically
Touch article part, the insensitivity of brake apparatus is lifted, reduce building site installation and the risk safeguarded.
It will be appreciated by those of ordinary skill in the art that above example is intended merely to the explanation present invention, and it is not intended as pair
The restriction of the present invention, as long as within the scope of the invention, change, deformation to above example will all fall in protection of the invention
Scope.
Claims (10)
1. a kind of device of polishing for brake component, it is characterized in that including bearing, bearing has brake area, and bearing forms peace
Hole is filled, mounting hole is penetrated by brake area with extraneous；Set check valve in the mounting hole of the bearing, check valve is by mounting hole
Two spaces are separated into, the inner space of mounting hole is used to contain scouring liquor, cleans liquid energy and flows to mounting hole by check valve
Outer space；The inner space of mounting hole is penetrated by guide hole or conduit with extraneous；It is movable that the outer space of mounting hole fills one
Polish part, the lateral surface for part of polishing protrudes from the brake area of bearing.
2. device as claimed in claim 1 of polishing, it is characterized in that：Described check valve includes seal, unidirectionally controlled part, pushed away
The inner wall sealing of bar, the outer wall of seal and mounting hole coordinates, the lateral surface of seal it is parallel with the medial surface for part of polishing and
Spacing is left, the middle part for part of polishing has a through hole, mounting hole space of the through hole insertion in seal both sides；Seal leads to
Hole is disposed into unidirectionally controlled part, is sealed and is coordinated between the outer wall of unidirectionally controlled part and the through hole edge of seal, unidirectionally controlled part with
Top pressure elastic component between the interior bottom of bearing mounting hole；Polish part medial surface in the middle part of be fixedly connected with push rod, push rod face can simultaneously stretch into
The through hole of seal and inwardly the unidirectionally controlled part of pushing tow departs from through hole.
3. device as claimed in claim 1 or 2 of polishing, it is characterized in that：In the mounting hole opening upper edge of bearing and/or below
Oil scupper is formed along chamfered shape, the end of oil scupper extends to the side of bearing.
4. a kind of brake component, there is brake area, it is characterized in that：Equipped with part of polishing on described brake component, outside part of polishing
Side protrudes from the brake area of brake component.
5. brake component as claimed in claim 4, it is characterized in that：Described brake component forms mounting hole, and mounting hole passes through braking
Rubbing surface penetrates with extraneous；Described part of polishing is loaded at described mounting hole.
6. brake component as claimed in claim 5, it is characterized in that：Between the medial surface of the part of polishing and the inner bottom surface of mounting hole
Load elastic component.
7. brake component as claimed in claim 5, it is characterized in that：Described part of polishing fills the mounting hole of the brake component
It is full.
8. the brake component as described in claim any one of 5-7, it is characterized in that：The mounting hole opening upper edge of the brake component
And/or the chamfered shape in lower edge and form oil scupper, the end of oil scupper extends to the side of brake component.
9. a kind of device of polishing for brake component, it is characterized in that including base, the cross section of base is concave, and the first of base
Side inside wall is fixed first and polished part；The second side of base is horizontally through adjusting bolt, and the inner of adjusting bolt is vertical fixed
Connect the first side of adjustment plate, the second side of adjustment plate and the first part of polishing are relative and leave spacing.
The device 10. such as claim 1 is polished, it is characterized in that：Adjusting bolt spins adjusting nut, and adjusting nut is in spill base
It is interior；The movable medial surface for being matched with spill base widthwise edge of adjustment plate, adjusting bolt outer casing spring, the both ends of spring are pushed up respectively
In adjustment plate, adjusting nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610718687.1A CN107777514A (en) | 2016-08-24 | 2016-08-24 | Brake component and the device of polishing for brake component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610718687.1A CN107777514A (en) | 2016-08-24 | 2016-08-24 | Brake component and the device of polishing for brake component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107777514A true CN107777514A (en) | 2018-03-09 |
Family
ID=61388702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610718687.1A Pending CN107777514A (en) | 2016-08-24 | 2016-08-24 | Brake component and the device of polishing for brake component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107777514A (en) |
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Application publication date: 20180309 |