CN105485177A - Supporting device for rotary shaft - Google Patents
Supporting device for rotary shaft Download PDFInfo
- Publication number
- CN105485177A CN105485177A CN201510859701.5A CN201510859701A CN105485177A CN 105485177 A CN105485177 A CN 105485177A CN 201510859701 A CN201510859701 A CN 201510859701A CN 105485177 A CN105485177 A CN 105485177A
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- CN
- China
- Prior art keywords
- plate
- ball base
- ball
- support device
- fixed
- 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
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/042—Housings for rolling element bearings for rotary movement
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- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a supporting device for a rotary shaft, and belongs to the field of mechanical parts. The supporting device comprises a pressure plate, a fixed part, a rolling ball, a first rolling ball base, a second rolling ball base and a mounting plate mounted on the end surface of one end of the rotary shaft, wherein the first rolling ball base is mounted on the first end surface of the mounting plate; a slide slot is formed in the first end surface of the pressure plate; the first end surface of the mounting plate and the first end surface of the pressure plate are oppositely arranged at intervals; the second rolling ball base is distributed in the slide slot in a sliding mode; the first rolling ball base and the second rolling ball base are oppositely arranged at intervals; a first rolling ball slot and a second rolling ball slot are oppositely formed in the first rolling ball base and the second rolling ball base respectively; a rolling ball is mounted in an accommodating cavity formed by the first rolling ball slot and the second rolling ball slot; and the center of the rolling ball and the axis of the rotary shaft are positioned on the same straight line. The device not only can support the rotary shaft, but also can be adapted to deflection of the rotary shaft, so that the condition that the rotary shaft is damaged by stress, and cannot normally work is avoided.
Description
Technical field
The present invention relates to mechanical parts field, particularly a kind of support device of running shaft.
Background technique
Running shaft is the common a kind of motion component of mechanical design field, and the running torque that the rotating driving device such as motor, oil hydraulic motor exports can be passed to the actuator of various equipment by it.
Existing rotary shaft supporting device mostly is bearing, and bearing housing fills on the rotary shaft, and bearing is fixed on the support of equipment by bearing support, is carried out axially and radial location running shaft by bearing.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem:
For the heavy mechanical equipment that required precision is not high, because the coaxality of running shaft and rotating driving device exists the factor such as machining error, assembly error, running shaft is made to produce beat in rotary course, and the bearing of supporting rotating shaft is to the axis of running shaft and be formed radially constraint, make bearing can produce reaction force to running shaft, running shaft is stoped to produce beat, if when this operating mode continues always, will speed up the wearing and tearing of bearing, running shaft, even cause the damage of bearing, bearing support and running shaft, cause normally working.
Summary of the invention
In order to solve the problem that running shaft in prior art can be able to occur with bearing because of beat to wear and tear, embodiments provide a kind of support device of running shaft.Described technological scheme is as follows:
Embodiments provide a kind of support device of running shaft, described support device comprises: pressing plate, fixed block, ball, first ball base, second ball base and the mounting plate be arranged on the end face of running shaft support end, described pressing plate is fixed on fixed body by described fixed block, described first ball base is arranged on the first end face of described mounting plate, first end face of described pressing plate offers chute, first end face of described mounting plate and the first end face relative spacing of described pressing plate are arranged, described second ball base slides and is arranged in described chute, and described first ball base and described second ball base relative spacing are arranged, described first ball base offers the first ball grooves and the second ball grooves with relative respectively on described second ball base, described ball is arranged in the receiving cavity that described first ball grooves and described second ball grooves formed, and the axis of the center of described ball and described running shaft is located on the same line.
Particularly, the first ball grooves and described second ball grooves are cone tank.
Particularly, described first ball base is installed on described mounting plate, and is Spielpassung between described first ball base and described mounting plate.
Particularly, described support device also comprises the first adjustment plate, the second adjustment plate, the first mirror finished stainless steel plate and the first wearing plate that are annular, described first adjustment plate is fixed on the first end face of described mounting plate around described first ball base, described first mirror finished stainless steel plate is fixed on described first adjustment plate, described second adjustment plate is fixed on the first end face of described pressing plate, described first wearing plate be fixed on described second adjustment plate on, and described first mirror finished stainless steel plate and described first wearing plate positioned opposite.
Particularly, described first wearing plate is fitted on described pressing plate by the first screw.
Particularly, described support device also comprises the second wearing plate and the second mirror finished stainless steel plate, described second wearing plate is fixed in described chute, described second mirror finished stainless steel plate is fixed on described second ball base, and described second ball base is slided in described chute by described second mirror finished stainless steel plate.
Further, described second wearing plate is arranged on described pressing plate by the second screw.
Particularly, described mounting plate is arranged on the end face of described running shaft one end by the 3rd screw.
Particularly, described fixed block comprises bolt, locking nut and adjusting nut, described pressing plate offers bolt hole, one end of described bolt is fixed on described fixed body, the other end of described bolt is successively through described locking nut, described bolt hole and described adjusting nut, and described pressing plate is fitted on described locking nut by described adjusting nut.
Particularly, described fixed block is four, and pressing plate surrounding is furnished with four extension plates, and four described fixed blocks are separately fixed on four described extension plates.
The beneficial effect that the technological scheme that the embodiment of the present invention provides is brought is: the support device of the running shaft that the embodiment of the present invention provides, when running shaft is in rotary course, because of running shaft axis not with the rotating shaft coaxle of rotating driving device, thus when there is beat, ball moves in the receiving cavity that the first ball base and the second ball base are formed, and along with the beat of running shaft, second ball base can slide in chute, for adapting to the beat of running shaft, this support device both can supporting rotating shaft, adapt to again the beat of running shaft, the situation appearance avoiding the stressed damage of running shaft and cannot normally work.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the main TV structure schematic diagram of the support device of the running shaft that the embodiment of the present invention provides;
Fig. 2 is the partial structurtes schematic diagram of Fig. 1 that the embodiment of the present invention provides;
Fig. 3 is another partial structurtes schematic diagram of Fig. 1 that the embodiment of the present invention provides;
Fig. 4 is the structural representation of the mounting plate that the embodiment of the present invention provides;
Fig. 5 is the structural representation of the mounting plate of the pressing plate that the embodiment of the present invention provides.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment
Embodiments provide a kind of support device of running shaft, as shown in Figure 1, this support device comprises: pressing plate 1, fixed block 2, ball 3, first ball base 4, second ball base 5 and the mounting plate 6 be arranged on the end face of running shaft a support end, pressing plate 1 is fixed on fixed body b by fixed block 2, first ball base 4 is arranged on the first end face of mounting plate 6, first end face of pressing plate 1 offers chute 1a, first end face of mounting plate 6 and the first end face relative spacing of pressing plate 1 are arranged, second ball base 5 slides and is arranged in chute 1a, and the first ball base 4 and the second ball base 5 relative spacing are arranged, first ball base 4 and the second ball base 5 offer the first ball grooves 4a and the second ball grooves 5a respectively, ball 3 is arranged in the receiving cavity that the first ball grooves 4a and the second ball grooves 5a formed, and the axis of the center of ball 3 and running shaft a is located on the same line.Wherein, first ball base 4 and the second ball base 5 can be all cylinder type, and the first ball base 4 end face relative with the second ball base 5 is arc, can avoid when running shaft generation beat like this, pressing plate 1 can with beat run-off the straight, can be all arc by end face relative with the second ball base 5 for the first ball base 4, when the support device of running shaft is when adapting to running shaft beat, can prevent before the first mirror finished stainless steel plate 9 contacts with the first wearing plate 10, first ball base 4 and the second ball base 5 come in contact and wear and tear, simultaneously, the end face that first ball base 4 is relative with the second ball base 5 is arc, the more multiaspect can wrapping up ball 3 is amassed, thus can prevent ball 3 from departing from the first ball grooves 4a and the second ball grooves 5a.The shape of chute 1a can be the circular trough matched with the second ball base 5, and circular trough is along the radial arrangement of running shaft a, and the diameter of chute 1a is greater than the diameter of the second ball base 5, can be convenient to the second ball base 5 like this and slide in chute 1a.In addition, the center of ball 3 and the central axis of chute 1a also can be arranged on same straight line.
Particularly, as shown in Figure 2, the first ball grooves 4a and the second ball grooves 5a can be all cone tank.Ball 3 can be ball-type, cone tank can ensure ball 3 and have less area of contact between the first ball grooves 4a and the second ball grooves 5a, thus conveniently ensure that ball 3 can rotate in the first ball grooves 4a and the second ball grooves 5a, if the first ball grooves 4a and the second ball grooves 5a is processed as the hemisphere type groove matched with the profile of ball 3, so, need the first ball grooves 4a and between the second ball grooves 5a and ball 3, there is higher precision, thus improve difficulty of processing.In addition, in order to improve intensity and the working life of the first ball base 4 and the second ball base 5, the first ball base 4 and the second ball base 5 all can adopt tool steel material, and carry out Quenching Treatment to the surface of the first ball grooves 4a and the second ball grooves 5a.
Particularly, the first ball base 4 is installed on mounting plate 6, and is Spielpassung between the first ball base 4 and mounting plate 6.Spielpassung can so that the first ball base 4 be changed after damaging.
Particularly, as shown in Figure 3, this support device can also comprise the first adjustment plate 7, second being annular and adjust plate 8, first mirror finished stainless steel plate 9 and the first wearing plate 10, mounting plate 6 is circular, first adjustment plate 7 is fixed on the first end face of mounting plate 6 around the first ball base 4, first mirror finished stainless steel plate 9 is fixed on the first adjustment plate 7, second adjustment plate 8 is fixed on the first end face of pressing plate 1 around the second ball base 5, first wearing plate 10 is fixed on the second adjustment plate 8, and the first mirror finished stainless steel plate 9 and the first wearing plate 10 positioned opposite.First mirror finished stainless steel plate 9 is welded on the first adjustment plate 7, first adjustment plate 7 is welded on mounting plate 6, when running shaft a is in rotary course, because of running shaft a axis not with the rotating shaft coaxle of rotating driving device c, thus when making running shaft a that beat occur, and then the first ball base 4 is worn and torn because contacting with the second ball base 5, now, the thickness of plate 7 and the second adjustment plate 8 can be adjusted by adjustment first, first mirror finished stainless steel plate 9 is first contacted concurrent raw relative movement with the first wearing plate 10, namely friction is produced, thus avoid the first ball base 4 to contact with the second ball base 5, and then avoid the first ball base 4 and the second ball base 5 weares and teares.In addition, the surface finishment on the first mirror finished stainless steel plate 9 surface is high and can prevent surface corrosion, simultaneously, first mirror finished stainless steel plate 9 frictional force produced of sliding on the first wearing plate 10 is little, make the second ball base 5 can follow ball 3 smoothly together to move, and the first mirror finished stainless steel plate 9 can also reduce the wearing and tearing of the first wearing plate 10.First wearing plate 10 can adopt friction factor extremely low and resistant to elevated temperatures polytetrafluoroethylmaterial material.
Particularly, as shown in Figure 4, the first wearing plate 10 is fitted on pressing plate 1 by the first screw 11.First screw 11 can be sunk screw, and sunk screw can not affect the first mirror finished stainless steel plate 9 and slide on the first wearing plate 10.Need often to change because wearing and tearing easily occur the first wearing plate 10 Long-Time Service, therefore, adopting the first screw 11 to fix the first wearing plate 10 can so that changes the first wearing plate 10.First screw 11 can be multiple, and is evenly arranged along the circumferencial direction of chute 1a.
Particularly, as shown in Figure 2, this support device can also comprise the second wearing plate 13 and the second mirror finished stainless steel plate 12, second wearing plate 13 is fixed in chute 1a, second mirror finished stainless steel plate 12 is fixed on the second ball base 5, and the second ball base 5 is slided in chute 1a by the second mirror finished stainless steel plate 12.Wherein, the effect of the second mirror finished stainless steel plate 12 is identical with the first mirror finished stainless steel plate 9, and the material of the second wearing plate 13 can be identical with the material of the first wearing plate 10.
Further, the second wearing plate 13 is arranged on pressing plate 1 by the second screw 14.Second screw 14 can be multiple, and multiple second screw 14 can be evenly arranged along the external frame of pressing plate 1.
Particularly, mounting plate 6 is arranged on the end face of running shaft a one end by the 3rd screw 15.3rd screw 15 can be multiple, and multiple 3rd screw 15 can be evenly arranged along the circumferencial direction of running shaft a.
Particularly, fixed block 2 comprises bolt 2a, locking nut 2b and adjusting nut 2c, pressing plate 1 offers bolt hole, one end of bolt 2a is fixed on fixed body b, the other end of bolt 2a is successively through locking nut 2b, bolt hole and adjusting nut 2c, and pressing plate 1 is fitted on locking nut 2b by adjusting nut 2c.By regulating the position of adjusting nut 2c, thus the position of adjustment pressing plate 1, and then the position between adjustment the first ball base 4 and the second ball base 5, make the first ball base 4 and the second ball base 5 can compress ball 3, be convenient to the effect that ball 3 couples of running shaft a play support.In addition, fixed block 2 can also comprise and add long nut 2d, adds long nut 2d and is arranged on bolt 2a, adding long nut 2d is welded on fixed body b, by adding long nut 2d, bolt 2a is fixed on fixed body b, and bolt 2a can be dismantled, be convenient to replace bolt 2a.In addition, can positioned spacers between adjusting nut 2c and pressing plate 1, prevent adjusting nut 2c to wear and tear pressing plate 1.
Particularly, as shown in Figure 5, fixed block 2 can be four, and be circular in the middle part of pressing plate 1, pressing plate 1 surrounding is furnished with four extension plate 1b, and four fixed blocks 2 are separately fixed on four extension plate 1b.In addition, according to concrete operating mode and the environment of running shaft a, the quantity that can increase or reduce extension plate 1b is to adapt to operating mode residing for running shaft a and environment.
Particularly, pressing plate 1, mounting plate 6, first mirror finished stainless steel plate 9, first adjustment plate 7, second adjustment plate 8 and the first wearing plate 10 all can arranged concentric.
Simply introduce the working principle of the support device of running shaft below:
As shown in Figure 1, the driving end of running shaft a is connected with rotating driving device c, the support end of running shaft a is provided with mounting plate 6, at the middle part of running shaft a, actuator d is installed, and running shaft a and actuator d is in transmission connection by key and keyway, when running shaft a is in rotary course, because of running shaft a axis not with the rotating shaft coaxle of rotating driving device c, thus when there is beat, ball 3 moves in the receiving cavity that the first ball base 4 and the second ball base 5 are formed, and along with the beat of running shaft a, second ball base 5 can slide in chute 1a, for adapting to the beat of running shaft a, thus the object realized running shaft a support.
Embodiments provide the support device of running shaft, when running shaft is in rotary course, because of running shaft axis not with the rotating shaft coaxle of rotating driving device, thus when there is beat, ball moves in the receiving cavity that the first ball base and the second ball base are formed, and along with the beat of running shaft, second ball base can slide in chute, for adapting to the beat of running shaft, this support device both can supporting rotating shaft, adapt to again the beat of running shaft, the situation appearance avoiding the stressed damage of running shaft and cannot normally work.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the support device of a running shaft, it is characterized in that, described support device comprises: pressing plate (1), fixed block (2), ball (3), first ball base (4), second ball base (5) and the mounting plate (6) be arranged on the end face of running shaft (a) support end, described pressing plate (1) is fixed on fixed body (b) by described fixed block (2), described first ball base (4) is arranged on the first end of described mounting plate (6), first end face of described pressing plate (1) offers chute (1a), first end face of described mounting plate (6) and the first end face relative spacing of described pressing plate (1) are arranged, the slip of described second ball base (5) is arranged in described chute (1a), and described first ball base (4) and described second ball base (5) relative spacing are arranged, described first ball base (4) offers the first ball grooves (4a) and the second ball grooves (5a) with relative respectively on described second ball base (5), described ball (3) is arranged in the receiving cavity that described first ball grooves (4a) and described second ball grooves (5a) formed, and the center of described ball (3) and the axis of described running shaft (a) are located on the same line.
2. support device according to claim 1, is characterized in that, described first ball grooves (4a) and described second ball grooves (5a) are cone tank.
3. support device according to claim 1, it is characterized in that, described first ball base (4) is installed on described mounting plate (6), and is Spielpassung between described first ball base (4) and described mounting plate (6).
4. support device according to claim 1, it is characterized in that, described support device also comprises the first adjustment plate (7) being annular, second adjustment plate (8), first mirror finished stainless steel plate (9) and the first wearing plate (10), described first adjustment plate (7) is fixed on the first end face of described mounting plate (6) around described first ball base (4), described first mirror finished stainless steel plate (9) is fixed in described first adjustment plate (7), described second adjustment plate (8) is fixed on the first end face of described pressing plate (1) around described second ball base (5), described first wearing plate (10) is fixed in described second adjustment plate (8), and described first mirror finished stainless steel plate (9) and described first wearing plate (10) positioned opposite.
5. support device according to claim 1, is characterized in that, described first wearing plate (10) is fitted on described pressing plate (1) by the first screw (11).
6. support device according to claim 1, it is characterized in that, described support device also comprises the second wearing plate (13) and the second mirror finished stainless steel plate (12), described second wearing plate (13) is fixed in described chute (1a), described second mirror finished stainless steel plate (12) is fixed on described second ball base (5), and described second ball base (5) is slided in described chute (1a) by described second mirror finished stainless steel plate (12).
7. support device according to claim 6, is characterized in that, described second wearing plate (13) is arranged on described pressing plate (1) by the second screw (14).
8. support device according to claim 1, is characterized in that, described mounting plate (6) is arranged on the end face of described running shaft (a) one end by the 3rd screw (15).
9. support device according to claim 1, it is characterized in that, described fixed block comprises bolt (2a), locking nut (2b) and adjusting nut (2c), (1) offers bolt hole with described pressing plate, one end of described bolt (2a) is fixed on described fixed body (b), the other end of described bolt (2a) is successively through described locking nut (2b), described bolt hole and described adjusting nut (2c), and described pressing plate (1) is fitted on described locking nut (2b) by described adjusting nut (2c).
10. support device according to claim 1, it is characterized in that, described fixed block (2) is four, described pressing plate (1) surrounding is furnished with four extension plates (1b), and four described fixed blocks (2) are separately fixed on four described extension plates (1b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510859701.5A CN105485177B (en) | 2015-11-30 | 2015-11-30 | A kind of support device of rotary shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510859701.5A CN105485177B (en) | 2015-11-30 | 2015-11-30 | A kind of support device of rotary shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105485177A true CN105485177A (en) | 2016-04-13 |
| CN105485177B CN105485177B (en) | 2018-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510859701.5A Active CN105485177B (en) | 2015-11-30 | 2015-11-30 | A kind of support device of rotary shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105485177B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL60766C (en) * | ||||
| US2956844A (en) * | 1957-10-14 | 1960-10-18 | Radio Condenser Co | Thrust bearing |
| US3655226A (en) * | 1970-08-03 | 1972-04-11 | C R C Ind | Bearing assembly |
| JPS5523568U (en) * | 1978-07-31 | 1980-02-15 | ||
| DE4108533A1 (en) * | 1991-03-18 | 1992-09-24 | Langenbeck Peter | Air mounted shaft for optical components - has two separate parts for radial and axial bearing |
| JPH0842566A (en) * | 1994-08-01 | 1996-02-13 | Koyo Seiko Co Ltd | Bearing for shaft end |
| CN1181467A (en) * | 1996-10-29 | 1998-05-13 | 三星电子株式会社 | Both-end supporting pivot thrust bearing apparatus |
| CN204672441U (en) * | 2015-03-24 | 2015-09-30 | 赵焕新 | Electric cleaner ball bearing dish |
-
2015
- 2015-11-30 CN CN201510859701.5A patent/CN105485177B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL60766C (en) * | ||||
| US2956844A (en) * | 1957-10-14 | 1960-10-18 | Radio Condenser Co | Thrust bearing |
| US3655226A (en) * | 1970-08-03 | 1972-04-11 | C R C Ind | Bearing assembly |
| JPS5523568U (en) * | 1978-07-31 | 1980-02-15 | ||
| DE4108533A1 (en) * | 1991-03-18 | 1992-09-24 | Langenbeck Peter | Air mounted shaft for optical components - has two separate parts for radial and axial bearing |
| JPH0842566A (en) * | 1994-08-01 | 1996-02-13 | Koyo Seiko Co Ltd | Bearing for shaft end |
| CN1181467A (en) * | 1996-10-29 | 1998-05-13 | 三星电子株式会社 | Both-end supporting pivot thrust bearing apparatus |
| CN204672441U (en) * | 2015-03-24 | 2015-09-30 | 赵焕新 | Electric cleaner ball bearing dish |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105485177B (en) | 2018-10-30 |
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