EP3650304B1 - Drehgestell für schienenfahrzeug - Google Patents

Drehgestell für schienenfahrzeug Download PDF

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Publication number
EP3650304B1
EP3650304B1 EP19206960.7A EP19206960A EP3650304B1 EP 3650304 B1 EP3650304 B1 EP 3650304B1 EP 19206960 A EP19206960 A EP 19206960A EP 3650304 B1 EP3650304 B1 EP 3650304B1
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EP
European Patent Office
Prior art keywords
bogie
transverse direction
along
wheel
wheels
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Active
Application number
EP19206960.7A
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English (en)
French (fr)
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EP3650304A1 (de
Inventor
Alain Rodet
Ludovic FAURE
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Alstom Transport Technologies SAS
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Alstom Transport Technologies SAS
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Publication of EP3650304A1 publication Critical patent/EP3650304A1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F3/00—Types of bogies
    • B61F3/16—Types of bogies with a separate axle for each wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
    • B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
    • B61C9/48—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension
    • B61C9/50—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension in bogies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F3/00—Types of bogies
    • B61F3/02—Types of bogies with more than one axle
    • B61F3/04—Types of bogies with more than one axle with driven axles or wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
    • B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/50—Other details
    • B61F5/52—Bogie frames

Definitions

  • the present invention relates to a bogie for a rail vehicle with a lowered floor.
  • the invention also relates to a railway vehicle comprising such a bogie.
  • Such a bogie is for example known from the document EP 0 465 346 A1 .
  • a rail vehicle and in particular in a rail vehicle intended for intra-urban transport such as, for example, trams, it is desirable to limit the size of the bogies in order to increase the internal space accessible to passengers in the cars, while at the same time keeping a small footprint of the rail vehicle on the track.
  • the reduction in the size of the bogies under the body makes it possible to keep a lowered floor, that is to say extending substantially at the same level over the entire surface of the rail vehicle and fairly close to the ground. This facilitates the movement of travelers between the cars and access to the vehicle from the outside, in particular for travelers having difficulty moving, while maximizing the number of seats installed to the right of the bogie.
  • the free volume under the body is particularly important in the case of rotary bogies, that is to say when the body is mobile in rotation relative to the bogie.
  • the space required to allow such rotation while maintaining a lowered floor is a heavy constraint on the design of the bogies.
  • the subject of the invention is a bogie according to claim 1.
  • Such a bogie makes it possible to have a rail vehicle comprising an integral lowered floor, while maintaining an acceptable size on the track, in particular as regards the lateral size since all the masses are not placed outside the vehicle. space defined between the wheels.
  • the invention also relates to a railway vehicle comprising at least one bogie as described above, and at least one vehicle body carried by the bogie, the body comprising at least twelve seats arranged to the right of the bogie on the same floor, the body also comprising a lowered floor, extending substantially at the same level over the entire floor.
  • the figures 1 and 2 show a bogie 10 of a rail vehicle according to a first embodiment of the invention, intended to equip a rail vehicle.
  • a longitudinal direction XX ' is defined according to the ordinary direction of movement of the rail vehicle, a transverse direction YY' orthogonal to the longitudinal direction X-X ', extending in a horizontal plane in an ordinary operation of the vehicle rail, and a direction of elevation ZZ 'substantially orthogonal to the transverse direction YY' and to the longitudinal direction X-X '.
  • the bogie 10 is suitable for being installed on a fully lowered floor rail vehicle.
  • the rail vehicle comprises at least one car, each car comprising a body defining a floor, and that each floor extends substantially at the same level in the direction of elevation Z-Z ', including to the right. of the bogie 10.
  • the rail vehicle comprises a large number of seats located in line with the bogie, in particular at least twelve seats on the same floor in front of the bogie, thanks to the integral lowered floor.
  • the floor extends for example at a height substantially between 350 and 380 mm from the ground, the height being measured in the direction of elevation.
  • the bogie 10 is a fixed bogie, that is to say a bogie intended to support the body of the rail vehicle without allowing movement. of significant relative rotation (that is to say of greater than 2 ° amplitude) of the body with respect to the bogie 10 about an axis of rotation substantially parallel to the direction of elevation Z-Z '.
  • the bogie 10 comprises a bogie frame 12, as well as four wheels 14, four motors 16 and four reducers 18.
  • Each motor 16 is associated with a single one of the wheels 14 and with a single one of the reducers 18, so that each motor 16 drives in rotation only the wheel 14 which is associated with it by means of the corresponding reducer 18.
  • Each wheel 14 is thus mechanically independent from the other wheels 14.
  • the bogie 10 further comprises two end parts 24 located on both sides of the frame 12 in the longitudinal direction X-X ', and two fifth wheels 26 located on both sides of the frame 12 in the transverse direction Y-Y'.
  • the frame 12 also called the frame, comprises two cross members 30 and two side members 32 assembled at their respective ends by corner pieces 33 to form a rectangle extending in a plane substantially orthogonal to the direction of 'Z-Z elevation'.
  • the cross members 30 and the side members 32 are for example metal beams of elongated shape, extending respectively substantially in the transverse direction Y-Y ′ and in the longitudinal direction X-X ′.
  • the cross members 30 and the side members 32 have an I-shaped section in a plane orthogonal to their direction of elongation. By this is meant that their section in this plane has a shape comprising a main section extending in the direction of elevation ZZ 'and two transverse sections connected to the ends of the main section in their respective midpoints, the transverse sections being orthogonal to the main section.
  • the crosspieces 30 and the side members 32 have an L-shaped, T-shaped, Z-shaped section, or another shape giving them suitable torsional resistance.
  • the end parts 24 are connected to the frame 12 by means of two respective primary suspension systems 31 and two respective joints 35.
  • the joints are in particular pivot connections, so that the end part 24 is movable relative to the frame 12 in the direction of elevation Z-Z '.
  • the primary suspension system 31 is thus adapted to allow a deflection of the axle boxes 34 relative to the chassis 12 only in an elevation direction, which makes it possible to keep a small footprint of the system. primary suspension 31.
  • the travel of the primary suspension system restricted to movement in the direction of elevation ZZ ' is supplemented by the flexibility of the chassis 12, conferred by the shape of the cross members 30 and the side members 32.
  • Each end part 24 comprises two axle boxes 34 fixed together by an end cross member 36.
  • Each end part 24 carries two of the wheels 14, mounted on respective wheel hubs 38 contained in the boxes of wheels. axles 34, as shown in figure 2 .
  • the axle boxes 34 are metal housings having a substantially parallelepipedal shape, and comprising a bevelled side face on the inside in the transverse direction Y-Y '.
  • Each axle box 34 contains one of the hubs 38 as well as the reduction gear 18, which mechanically drives the hub 38 under the action of the associated motor 16.
  • the end cross members 36 are metal beams of elongated shape, extending substantially parallel to the transverse direction Y-Y ', and advantageously having an I-section as defined above.
  • Each hub 38 is rotatably mounted in the respective axle box 34, around an axis of rotation substantially parallel in the transverse direction Y-Y ', and carries a single wheel 14.
  • Each wheel 14 is thus mobile in rotation with respect to to the frame 12, around the respective axis of rotation extending in the transverse direction Y-Y '.
  • the end cross members 36 extend below the axes of rotation of the hubs 38 in the direction of elevation Z-Z '.
  • the use of independent hubs 38 for the four wheels 14 frees up the space located above the end cross members 36 and increases the free volume to the right of the bogie 10.
  • each fifth wheel 26 is connected to the frame 12 by a respective articulated arm 39A.
  • the fifth wheel 26 further comprises a respective secondary suspension system adapted to connect the fifth wheel 26 to a rail vehicle body carried by the bogie 10.
  • Each secondary suspension system comprises a shock absorber 39B and two groups of springs 39C, each connecting the body to the fifth wheel 26.
  • Each motor 16, carried by a corner of the frame 12, is an electric motor and comprises, in a known manner, a shaft carrying a rotor mounted movably in rotation in a stator carried by a stator casing, the rotation of the shaft taking place on at least one rotation step.
  • the shaft is thus movable in rotation relative to the frame 12 about an axis of rotation extending in the transverse direction Y-Y '.
  • the shaft connects an output of the motor 16 to an input of the reducer 18, via a coupling 49, and transmits the torque generated by the motor 16 to the reducer 18 and finally to the wheel 14.
  • the wheels 14 define between them a space E, shown in the figures 1 and 2 , the space E extending between the planes of the wheels 14 in the transverse direction Y-Y '.
  • the motors 16 are arranged externally with respect to the wheels 14 in the transverse direction Y-Y '. That is to say that each motor 16 is located in a half space extending on the side opposite to the frame 12 with respect to the plane of the wheel 14 associated with the motor 16. The motors 16 are thus arranged outside of the frame. the space defined by the wheels 14 in the transverse direction Y-Y '.
  • the reducers 18 are positioned internally with respect to the wheels 14 in the transverse direction Y-Y '. That is to say that each reducer 18 is located in a half space extending on the same side as the frame 12 with respect to the plane of the wheel 14 associated with the reducer 18. The reducers 18 are thus placed inside. of the space defined by the wheels 14 in the transverse direction Y-Y '.
  • Each reducer 18 is arranged to transmit the rotation of one of the motors 16 to one of the hubs 38 carrying one of the wheels 14.
  • the reducer 18 comprises for example a first gear cooperating on one side with a second gear connected to the coupling 49 , and on the other side with a third gear connected to hub 38.
  • the reduction gear 18 allows, in addition to adjusting the transmission ratio between the motor 16 and the wheel 14, to transmit the torque from the motor 16 to the wheel 14 without aligning the axes of the hub 38 and of the motor shaft 16 according to the transverse direction Y-Y '.
  • the motor 16 and the wheel 14 are offset in the longitudinal direction X-X ', which reduces the lateral size of the bogie 10.
  • the bogie 10 advantageously comprises four braking devices 60, each braking device 60 being adapted to block the rotation of one of the respective wheels 14.
  • each brake device 60 comprises a brake caliper 62 and two brake pads 64 carried by two members of the brake caliper 62.
  • the brake device 60 is adapted to clamp the brake pads 64 against opposite sides of the brake.
  • a brake disc 66 integral with the wheel 14, via the brake caliper 62, to block the rotation of the wheel 14.
  • Each braking device 60 is disposed entirely below the motor 16 associated with the respective wheel 14 with the braking device 60. That is to say that the brake caliper 62 and the brake pads 64 are located in the half. space located under the motor 16 in the direction of elevation Z-Z '.
  • a second embodiment is shown in figure 3 .
  • the bogie 10 according to the second embodiment differs from the first embodiment by the points described below.
  • the bogie 10 is a pivoting bogie.
  • This is understood to mean that the bogie 10 is adapted to allow a relative rotational movement between the frame 12 and the rail vehicle body, around a vertical axis of rotation substantially parallel to the direction of elevation Z-Z ', a maximum amplitude of this relative rotational movement being for example greater than 12 °.
  • the presence of bevelled side faces on the axle boxes 34 improves the amplitude of the rotation of the body.
  • the bogie 10 comprises a load cross member 80 connected to the frame 12 by the secondary suspension system, and carrying a ball crown 82 adapted to be fixed to the body of a railway vehicle in a movable manner in rotation about an axis of rotation s 'extending along the direction of elevation ZZ'
  • the load cross member 80 extends above the frame 12, in the transverse direction Y-Y '.
  • the load cross member 80 comprises a central part 84 which carries the ball ring 82, two lateral parts 88 extending the central part 84 outwardly in the transverse direction Y-Y ', and two ends 90 extending outwardly relative to the intermediate parts. 88 respective in the transverse direction Y-Y '.
  • the central part 84 extends internally with respect to the wheels 14 and to the side members 32, in the transverse direction Y-Y ', that is to say in the space defined by the wheels 14.
  • the end portions 90 extend outside the space defined by the wheels 14.
  • the load cross member 80 is supported on the springs 39C of the secondary suspension system at the ends 90.
  • the central part 84 extends lower than the ends 90 in the direction of elevation Z-Z ', so that A height of the ball crown 82 is partially compensated by the lowering of the central part 84. This makes it possible to reduce the bulk associated with the ball crown 82.
  • the load cross member 80 has a thickness e 1 measured in the direction of elevation ZZ 'at the level of the central part 84, greater than a thickness e 2 at the level of the side parts 88. This makes it possible to reduce the bulk. associated with the load cross member 80 at the level of the side parts 88 and the ends 90, that is to say above the frame 12, where space is crucial, and above the springs 39C, while maintaining a sufficient thickness in the central part, at the level of the ball ring 82 carrying the body.
  • the bogie 10 makes it possible to have a rail vehicle comprising an integral lowered floor, while maintaining a sufficiently small footprint on the track, in particular as regards the lateral or transverse size.
  • the motors 16 and the axle boxes 34 are arranged externally, so as to leave a maximum free volume in line with the bogie to allow the full lowered floor.
  • the arrangement of the motors 16, the wheels 14 and the axle boxes 34, offset in the longitudinal direction X-X ' makes it possible to minimize the lateral bulk under the body compared to a direct transmission system, for example. .
  • the large free volume to the right of the bogie 10 also makes it possible to use the same structure of the bogie 10 for pivoting and non-pivoting applications, the free volume allowing sufficient amplitude of rotation of the body above the bogie 10 between the axle boxes 34.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Vehicle Body Suspensions (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Platform Screen Doors And Railroad Systems (AREA)

Claims (10)

  1. Drehgestell (10) für Niederflur-Schienenfahrzeug, aufweisend:
    - einen Drehgestellrahmen (12) und
    - vier Räder (14), die an dem Rahmen (12) montiert sind, wobei jedes Rad (14) relativ zum Rahmen (12) um eine jeweilige Drehachse drehbewegbar ist, die sich entlang einer gleichen Querrichtung (Y-Y') erstreckt, wobei die Räder (14) zwischen einander einen Raum (E) definieren, wobei sich der Raum (E) zwischen Erstreckungsebenen der Räder (14) entlang der Querrichtung (Y-Y') erstreckt,
    wobei das Drehgestell ferner aufweist:
    - vier Motoren (16), die an dem Rahmen (12) montiert sind,
    und
    - vier Getriebe (18), die innerhalb des Raums (E) entlang der Querrichtung (Y-Y') angeordnet sind,
    wobei jeder Motor (16) eingerichtet ist, um eines der Räder (14) über eines der dem Rad (14) zugeordneten Getriebe (18) anzutreiben, wobei jedes Rad (14) mechanisch unabhängig von den anderen Rädern (14) ist,
    dadurch gekennzeichnet, dass die vier Motoren (16) außerhalb des Raums (E) entlang der Querrichtung (Y-Y') angeordnet sind.
  2. Drehgestell (10) gemäß Anspruch 1, wobei jeder Motor (16) relativ zu dem zugeordneten Rad (14) entlang einer zu der Querrichtung (Y-Y') orthogonalen Längsrichtung (X-X') versetzt ist.
  3. Drehgestell (10) gemäß irgendeinem der Ansprüche 1 bis 2, wobei jedes Rad (14) an einer jeweiligen Nabe (38) montiert ist, die in einem Achslager (34) enthalten ist, wobei das dem Rad (14) zugeordnete Getriebe (18) ebenfalls in dem Achslager (34) enthalten ist.
  4. Drehgestell (10) gemäß Anspruch 3, wobei die Achslager (34) paarweise durch sich im Wesentlichen entlang der Querrichtung (Y-Y') erstreckende Endquerträger (36) aneinander befestigt sind.
  5. Drehgestell (10) gemäß irgendeinem der Ansprüche 3 und 4, wobei die Achslager (34) durch Primäraufhängungsvorrichtungen (31) an dem Rahmen (12) befestigt sind, wobei jede Primäraufhängungsvorrichtung (31) eingerichtet ist, um einen Federweg der Achslager (34) relativ zum Rahmen (12) ausschließlich entlang einer Höhenrichtung (Z-Z') zu ermöglichen, die im Wesentlichen senkrecht zu der Querrichtung (Y-Y') ist.
  6. Drehgestell (10) gemäß irgendeinem der Ansprüche 1 bis 5, wobei jeder Motor (16) eine Welle aufweist, die relativ zum Rahmen (12) entlang einer jeweiligen Drehachse parallel zur Querrichtung (Y-Y') drehbewegbar ist, wobei die Welle einen Ausgang des Motors (16) mit einem Eingang eines entsprechenden Getriebes (18) verbindet.
  7. Drehgestell (10) gemäß irgendeinem der Ansprüche 1 bis 6, wobei das Drehgestell (10) ein Schwenkdrehgestell ist, das einen Lastquerträger (80) aufweist, der einen Kugelring (82) aufweist, der um eine Drehachse drehbar angelenkt ist, die sich entlang einer zur Querrichtung (Y-Y') im Wesentlichen senkrechten Höhenrichtung (Z-Z') erstreckt, wobei der Kugelring (82) vorgesehen ist, um einen Wagenkasten eines Schienenfahrzeugs abzustützen.
  8. Drehgestell (10) gemäß Anspruch 7, wobei der Lastquerträger (80) einen zentralen Teil (84), der sich in dem Raum (E) entlang der Querrichtung (Y-Y') erstreckt, und zwei Seitenteile (86) aufweist, die den zentralen Teil (84) außerhalb des Raums (E) entlang der Querrichtung (Y-Y') verlängern, wobei der zentrale Teil (84) eine Dicke (ei) aufweist, gemessen entlang einer Höhenrichtung (Z-Z'), die im Wesentlichen senkrecht zu der Querrichtung (Y-Y') ist, die größer als eine Dicke (e2) der Seitenteile (86) gemessen entlang der Höhenrichtung (Z-Z') ist.
  9. Drehgestell (10) gemäß irgendeinem der Ansprüche 1 bis 8, aufweisend vier Bremsvorrichtungen (60), die den Rädern (14) zugeordnet sind, wobei jede Bremsvorrichtung (60) einen Bremssattel (62) aufweist, der eingerichtet ist, um die Drehung des jeweiligen Rades (14) zu bremsen, wobei der Bremssattel (62) vollständig unter dem Motor (16) angeordnet ist, der das Rad (14) antreibt, entlang einer Höhenrichtung (Z-Z') im Wesentlichen senkrecht zu der Querrichtung (Y-Y').
  10. Schienenfahrzeug, aufweisend mindestens ein Drehgestell (10) gemäß irgendeinem der Ansprüche 1 bis 9 und mindestens einen von dem Drehgestell getragenen Wagenkasten, wobei der Wagenkasten mindestens zwölf Sitze aufweist, die im rechten Winkel zum Drehgestell (10) auf einer gleichen Ebene angeordnet sind, wobei der Wagenkasten ferner einen abgesenkten Boden aufweist, der sich im Wesentlichen auf der gleichen Höhe über die gesamte Ebene erstreckt.
EP19206960.7A 2018-11-06 2019-11-04 Drehgestell für schienenfahrzeug Active EP3650304B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1860194A FR3088042B1 (fr) 2018-11-06 2018-11-06 Bogie pour vehicule ferroviaire

Publications (2)

Publication Number Publication Date
EP3650304A1 EP3650304A1 (de) 2020-05-13
EP3650304B1 true EP3650304B1 (de) 2021-02-17

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EP19206960.7A Active EP3650304B1 (de) 2018-11-06 2019-11-04 Drehgestell für schienenfahrzeug

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Country Link
EP (1) EP3650304B1 (de)
CN (1) CN111137316B (de)
ES (1) ES2869933T3 (de)
FR (1) FR3088042B1 (de)

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CN115056814B (zh) * 2022-06-21 2024-01-26 中车青岛四方机车车辆股份有限公司 轨道车辆转向架横梁、转向架构架、转向架及轨道车辆
AT526054B1 (de) * 2022-10-24 2023-11-15 Siemens Mobility Austria Gmbh Fahrwerk für ein Schienenfahrzeug und Schienenfahrzeug

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CN114750800A (zh) * 2022-05-25 2022-07-15 中铁磁浮交通投资建设有限公司 一种磁动力走行机构及中短途磁动力物料运输工程车
CN114750800B (zh) * 2022-05-25 2023-12-15 中铁磁浮交通投资建设有限公司 一种磁动力走行机构及中短途磁动力物料运输工程车

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Publication number Publication date
ES2869933T3 (es) 2021-10-26
CN111137316B (zh) 2023-08-11
FR3088042A1 (fr) 2020-05-08
FR3088042B1 (fr) 2020-11-27
EP3650304A1 (de) 2020-05-13
CN111137316A (zh) 2020-05-12

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