• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a wagon adapter (14) for radially connecting a wagon body to a bearing (16). The wagon adapter (14) comprises an adapter body (40) having two lateral channels (42) each delimited by a pair of opposite ears (42b, 42c) and a lateral surface (42a) perpendicular to said opposite ears ( 42b, 42c), lateral channels (42) being provided to cooperate with the wagon body. The wagon adapter (14) also includes two front surfaces (46, 48), an inner surface (30) acting as a bearing seat for said bearing (16), and an outer surface (32). The wagon adapter (14) also includes two front flanges (50, 52; 58, 59; 60, 62; 70, 72) which project inwardly from the internal surface (30), and which delimit with the internal surface (30) a housing for said bearing (16), and at least one of said flanges (50; 58, 59; 60; 70, 72) is separate from the adapter body (40) and is mounted on a front surface (46, 48) of said body (40). Figure 1.
    公开号:FR3081810A1
    申请号:FR1905278
    申请日:2019-05-20
    公开日:2019-12-06
    发明作者:Gautier Jenart；Ludovic Fenayon；Thierry Le Moigne
    申请人:SKF AB；
    IPC主号:
    专利说明:

    Description
    Title of the invention: WAGON ADAPTER FOR CONNECTING A WAGON BODY TO A BEARING Technical field of the invention The present invention relates to the field of bearing adapters for a wagon.
    STATE OF THE PRIOR ART A wagon generally comprises a bogie frame provided with a pair of lateral frames on each side, having jaws opening downwards. A bearing adapter can be moved vertically inside the jaws and rests on a bearing mounted on a wagon axle carrying a wheel of said wagon. The bearing adapter thus constitutes a rigid connection between the bogie frame of the wagon and the bearing. Typically, a bearing for a wagon axle fits around a journal at the end of the wagon axle, where it is mounted between a support ring assembly and a ferrule.
    However, the wagon adapter can move relative to the bearing. The load applied by the bogie frame through the adapter may not be well distributed over the bearing, in particular on the rolling elements when the bearing is of the rolling bearing type. This results in wear on the inside and outside surfaces of the wagon adapter as well as bearing failure.
    In addition, the wagon adapter can come into contact with the support ring or the bearing end piece. This gives rise to unexpected wear of these parts and thus reduces their useful life.
    The movement of the wagon relative to the bearing can also lead to direct contact between the adapter and one of the seals of the bearing. In this case, the bearing is not properly sealed. Therefore, pollution by contaminating particles, dust and water can penetrate the interior of the bearing from the outside and potentially damage the parts of the bearing.
    Typically, the bearings are filled with lubricant, in particular grease, to lubricate the rolling contact surfaces which support in rotation the axle of the wagon. The goal is to reduce friction and heat exchange so as to reduce wear on parts and the risk of breakage. However, bearing seals affected by movement of the car adapter can lead to a lubricant leak to the outside of the bearing, and then to a bearing failure.
    These and other problems are solved by embodiments of the present invention.
    Summary of the invention [0008] To this end, the invention relates to a wagon adapter intended to radially connect a wagon body to a bearing. The wagon adapter comprises an adapter body having two lateral channels each delimited by a pair of opposite ears and a lateral surface perpendicular to said opposite ears. The lateral channels are provided to cooperate with the wagon body. The adapter body further includes two front surfaces, an inner surface acting as a bearing seat for said bearing, and an outer surface. The wagon adapter also comprises two front flanges which project inwards with respect to the internal surface, and which delimit with the internal surface a housing for said bearing. At least one of said flanges is separate from the adapter body and is mounted on a front surface of said body.
    Such a wagon adapter with a separate flange facilitates the mounting of the wagon adapter on the bearing.
    It also allows to adjust the travel between the flanges and the bearing, and therefore to improve the maintenance of the bearing inside said wagon adapter. The wagon adapter is limited in its relative movement relative to the bearing.
    Such an arrangement improves the useful life of the wagon adapter and the bearing by preventing relative misalignment and wear.
    The adapter body of the wagon adapter can be standardized, the at least one flange being able to be adapted according to the application characteristics.
    According to other aspects of the invention which are advantageous but not compulsory, such a wagon adapter may include one or more of the following characteristics:
    A front flange is mounted on the adapter body, and the other front flange is formed integrally with said body.
    The two front flanges are mounted on the adapter body.
    Said at least one flange is connected to a fixing plate which is mounted on the external surface of said adapter body.
    The two front flanges are connected by a fixing plate so as to form a part mounted on the adapter body.
    The at least one flange and the fixing plate are formed integrally.
    The fixing plate is provided with a recess which receives a protruding pin provided on the external surface of the adapter body.
    Said at least one flange is fixed securely to said front surface of the adapter body by fixing means.
    The fixing plate is fixed securely to said external surface of the adapter body by fixing means.
    The fixing means are screws.
    At least one front flange is provided with a hook which projects towards the bearing. The hook is provided to cooperate with the bearing.
    The outer surface of the adapter body is designed to be in direct radial contact with the wagon body.
    The wagon adapter is further provided with an upper covering mounted on the external surface of the adapter body or on the fixing plate, said upper covering being intended to be in direct radial contact with the wagon body. .
    The internal surface has for example a concave shape of constant radius so as to rest on the bearing.
    The adapter body is made of metal, for example by casting. For example, the adapter body is made of cast steel or cast iron.
    Said at least one flange is made of metal.
    Said at least one flange is made of plastic or of polymer material.
    According to another aspect, the invention relates to a wagon adapter assembly comprising a wagon adapter according to any one of the preceding embodiments, a bearing mounted inside the wagon adapter, a ring support intended to come into axial contact with the bearing at a first side and a set of end pieces provided to come into axial contact with the bearing at another side, opposite the first side.
    According to one embodiment, the bearing comprises at least one internal ring and at least one external ring mounted in radial contact with the internal surface of the wagon adapter.
    According to one embodiment, the bearing comprises at least one row of rolling elements arranged between raceways provided on the inner and outer rings.
    According to one embodiment, the internal ring of the bearing is produced in two parts separated axially by an axial spacer.
    According to another aspect, the invention relates to a wagon axle comprising a wagon adapter assembly according to any one of the preceding embodiments, a shaft being rotatably mounted about an axis of rotation relative to a wagon adapter inside said bearing. The shaft includes a first end mounted radially inside the support ring and a second end opposite the first end and fixed to the end piece assembly.
    BRIEF DESCRIPTION OF THE FIGURES Other advantages and characteristics of the invention will appear on examining the detailed description of nonlimiting embodiments and the appended drawings in which:
    [Fig.l] is a perspective view of a wagon axle according to a first embodiment of the invention;
    [Fig.2] is an axial cross section of the wagon axle of Figure 1;
    [Fig.3] is an axial cross section of the wagon axle according to a second embodiment of the invention;
    [Fig.4] is an exploded perspective view and [Fig 5] is an assembled perspective view of a wagon adapter for a wagon axle according to a third embodiment of the invention; and [fig.6] is an exploded perspective view and [Fig 7] and an assembled perspective view of a wagon adapter for a wagon axle according to a fourth embodiment of the invention.
    Detailed description of the invention If we refer to Figures 1 and 2, a wagon axle 10 is provided to connect the bogie frame of a wagon to the wheels (not shown). The wagon axle 10 comprises a shaft 12 (in dotted lines in FIG. 2), mounted for rotation about an axis of rotation X10 relative to a wagon adapter 14. The wagon adapter 14 is fixed to the frame of wagon bogie, the shaft 12 being fixed to the bogie.
    A bearing 16 is provided radially between the wagon adapter 14 and the shaft 12. As illustrated in FIG. 2, the bearing 16 is of the rolling bearing type and comprises an internal ring 18 mounted on the shaft 12 , an outer ring 20 mounted inside the wagon adapter 14 and two rows of rolling elements 22a, 22b, for example rollers, arranged between raceways provided on the inner and outer rings 18, 20 The internal ring 18 is for example made in two parts axially separated by an axial spacer 24. In this embodiment, the bearing 16 is a tapered roller bearing.
    The bearing 16 is further provided with sealing means 26, 28 at the two axial ends. The sealing means 26, 28 close a radial space defined between the inner ring 18 and the outer ring 20. The rolling elements 22a, 22b are arranged in said sealed radial space.
    The wagon adapter 14 is fixed to the outer ring 20 by its radially inner side or its side towards the bearing seat 30 and is mounted inside the bogie frame by its radially outer side or its side towards the frame seat 32.
    The shaft 12 includes a pin 12a and a dust cover having a cylindrical surface 12b whose diameter is greater than the diameter of the pin 12a. A concave leave 12c connects the cylindrical surface 12b to the pin 12a. The inner ring 18 of the bearing is mounted on the pin 12a.
    As illustrated, the wagon axle 10 further comprises a support ring 34 having an internal surface 34a intended to come into contact radially with the external surface of the shaft 12, at the level of the side of the leave 12c and for come into axial contact with the inner ring 18 of the bearing 16. Consequently, the inner surface 34a of the support ring 34 has a rounded shape, almost complementary to that of the fillet 12c.
    The wagon axle 10 also includes a tip assembly 38. The tip assembly 38 includes the tip 38a intended to constitute a stop element in the case of a translation to the left (relative in FIG. 2) of the shaft 12 with respect to the internal ring 18. Consequently, the end piece 38a is reliably fixed to the pin 12 by means of three end screws 38b and comes into axial contact with the ring internal 18 of bearing 16.
    As illustrated in detail in Figure 1, the wagon adapter 14 comprises an adapter body 40 provided with two lateral channels 42. In Figure 1, only one channel 42 is illustrated, the adapter body 40 comprising another lateral channel on the opposite lateral side. Each of the lateral channels 42 is delimited axially by a pair of opposite ears 42b, 42c and by a lateral surface 42a perpendicular to said ears. Each side channel 42 has a U-shape and is intended to engage an ear of a jaw (not shown) of the bogie frame so as to act as an insertion guide between the adapter and the frame. bogie.
    The body 40 of the wagon adapter 14 further comprises two front surfaces 46, 48, the internal surface 30 acting as a bearing seat in radial contact with the outer ring 20 of the bearing 16, and the external surface 32 acting as a frame seat in radial contact with the bogie frame.
    The internal surface 30 has a concave shape of constant radius so as to rest on the external cylindrical surface of the external ring 20 of the bearing 16.
    The adapter body 40 is made of metal by any suitable process such as for example by casting. For example, the body 40 is made of steel or cast iron.
    The wagon adapter 14 also includes first and second front flanges 50, 52 oriented radially inward. The flanges 50, 52 project radially inwards relative to the internal surface 30. The flanges 50, 52 are axially opposite one another. The flanges 50, 52 define with the internal surface 30 a housing for the outer ring 20 of the bearing 16. The outer ring 20 is disposed axially between said flanges 50, 52.
    According to this first embodiment of the invention, the first flange 50 is separate from the adapter body 40 and is mounted on the front surface 46 of said body 40. The second flange 50 is formed integrally with the body of adapter 40.
    The lateral edges of the flange 50 are aligned with the lateral surfaces 42a of the body 40.
    The first flange 50 is fixed securely to the front surface 46 by any suitable fixing means. In the embodiment illustrated in FIG. 1, the fixing means consist of two screws 56a, 56b passing through axial holes provided on the flange 50, and engaging in corresponding threaded holes (not shown) provided on the front surface 46.
    The axial movement between the outer ring 20 and the flanges 50, 52 can be adjusted precisely so as to prevent any relative movement between the wagon adapter 14 and the bearing 16.
    The flange 50 is made of metal by any suitable process such as for example by casting. For example, the flange 50 is made of steel or cast iron. Alternatively, the flange is made of plastic or polymer material.
    Advantageously, and according to an alternative embodiment not shown, at least one of the two flanges 50, 52 is provided with a hook. The hook projects axially inwards towards the bearing and cooperates with an axial end of the outer ring 20 of the bearing 16. The hook makes it possible to radially maintain the wagon adapter 14 on the outer ring 20 of the bearing 16.
    If we refer to a second embodiment of the invention illustrated in FIG. 3, the wagon adapter 14 is provided with two flanges 58, 59 mounted and fixed securely to respective front surfaces 46, 48 of the adapter body 40.
    A third embodiment of the invention is illustrated in Figures 4 and 5, the same elements having the same references, and it differs only from the previous embodiments in that the wagon adapter 14 includes a front flange 60 provided with a fixing plate 64.
    The flange 60 extends radially inwards and is mounted axially against the front surface 46 of the adapter body 40.
    The fixing plate 64 extends axially from the outer edge of said flange 60 and is oriented towards the other flange 62. In this embodiment, the other flange 62 is formed integrally with the adapter body 40. The fixing plate 64 covers radially the external surface 32 of the adapter body 40.
    The flange 60 and the fixing plate 64 are formed integrally. The fixing plate 64 is fixed securely to the outer surface of the adapter body 40 by any suitable fixing means. In the embodiment illustrated in FIG. 4, the fixing means are a plurality of screws 66 passing through radial holes provided on the fixing plate 64, and engaged in corresponding threaded holes provided on the external surface 32.
    The fixing plate 64 is provided with a recess receiving a pin projecting radially outwards 32a provided on the external surface 32. The pin 32a makes it possible to center the fixing plate 64 relative to the adapter body 40 .
    Advantageously, the wagon adapter 14 is further provided with an upper cover 68 mounted on the external surface of the fixing plate 64. The upper cover has an external surface 68a acting as a frame seat in contact direct radial with the bogie frame. The upper cover 68 is advantageously fixed securely to the fixing plate, for example by screws 66 or by other screws. In a variant not illustrated, the fixing plate 64 has an external surface acting as a frame seat in direct radial contact with the bogie frame.
    A fourth embodiment of the invention is illustrated in Figures 6 and 7, the same elements having the same references, and it is distinguished only from the previous embodiments by the fact that the wagon adapter is provided two flanges 70, 72 mounted on front surfaces 46, 48 of the adapter body 40, said flanges 70, 72 being connected to each other by a fixing plate 74.
    The first flange 70 and the second flange 72 each extend radially inwards and are mounted respectively axially against the front surfaces 46, 48 of the adapter body 40.
    The fixing plate 74 extends axially between the external edges of said flanges 70, 72. The fixing plate 74 radially covers the external surface 32 of the adapter body 40.
    The flanges 70, 72 and the fixing plate 64 are formed integrally. The fixing plate 74 is fixed securely to the external surface of the adapter body 40, for example by screws (not shown).
    Advantageously, the fixing plate 74 is further provided with a recess 74a receiving a pin 32a projecting radially outwards and provided on the external surface 32. The pin 32a makes it possible to center the fixing plate 74 relative to to the adapter body 40.
    Advantageously, the wagon adapter 14 is further provided with an upper cover 78 mounted on the external surface of the fixing plate 74, said upper cover 78 acting as a frame seat in direct radial contact with the bogie frame. In this embodiment, the pin 32a extends in a recess 78a provided on the upper cover 78. As a variant not shown, the fixing plate 74 has an external surface acting as a frame seat in direct radial contact with the bogie frame.
    It should be noted that the embodiments illustrated and described have been provided solely by way of indicative and non-limiting examples and that modifications, combinations and variants are possible within the scope of the invention.
    The invention has been illustrated on the basis of a rolling bearing provided with at least one row of rolling elements arranged radially between the inner and outer rings. Alternatively, the bearing can be a plain bearing or a sliding bearing comprising one or two rings.
    权利要求:
    Claims (1)
    [1" id="c-fr-0001]
    claims [Claim 1] Wagon adapter (14) for radially connecting a wagon body to a bearing (16), and comprising an adapter body (40) having: two lateral channels (42) each delimited by a pair of opposite ears (42b , 42c) and a lateral surface (42a) perpendicular to said opposite ears (42b, 42c), lateral channels (42) being provided to cooperate with the wagon body, two frontal surfaces (46, 48), an internal surface (30 ) acting as a bearing seat for said bearing (16), an external surface (32), and two front flanges (50; 58, 59; 60; 70, 72) which project inwards with respect to the internal surface (30), and which delimit with the internal surface (30) a housing for said bearing (16), at least one of said flanges (50; 58, 59; 60; 62; 70, 72) being distinct from the adapter body (40) and being mounted on a front surface (46, 48) of said body (40). [Claim 2] A wagon adapter according to claim 1, wherein said at least one flange (50; 58, 59; 60; 70, 72) is securely attached to said front surface of the adapter body (40) by fastening means (56a , 56b; 66; 32a). [Claim 3] Wagon adapter according to claim 1 or 2, wherein a front flange (50; 60) is mounted on the adapter body (40), and the other front flange (52; 62) is integrally formed with said body ( 40). [Claim 4] Wagon adapter according to claim 1 or 2, wherein the two front flanges (58, 59; 70, 72) are mounted on the adapter body (40). [Claim 5] Wagon adapter according to claim 3 or 4, wherein at least one separate flange (60; 70, 72) is connected to a fixing plate (64; 74) which is mounted on the external surface (32) of said body adapter (40). [Claim 6] A wagon adapter according to claim 5, wherein the at least one flange (60; 70, 72) and the fixing plate (64; 74) are integrally formed. [Claim 7] Wagon adapter according to claim 5 or 6, in which the fixing plate (74) is provided with a recess (74a) which receives
    a protruding pin (32a) provided on the outer surface (32) of the adapter body (40). [Claim 8] A wagon adapter according to any of claims 5 to 7, wherein the attachment plate (64) is securely attached to said outer surface (32) of the adapter body (40) by attachment means (66). [Claim 9] Wagon adapter according to any one of claims 5 to 8, in which an upper cover (68; 78) is mounted on the fixing plate (64; 74), said upper cover (68, 78) being provided to be in direct radial contact with the wagon body. [Claim 10] Wagon adapter assembly comprising a wagon adapter (14) according to any one of the preceding claims, a bearing (16) mounted inside the wagon adapter (14), a support ring (34) provided for come into axial contact with the bearing (16) at a first side, and a tip assembly (38) designed to come into axial contact with the bearing (16) at another side opposite the first side .
    1/5
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR3081810B1|2021-10-15|
    US20190367053A1|2019-12-05|
    US10974742B2|2021-04-13|
    AU2019201847A1|2019-12-19|
    DE102019207628A1|2019-12-05|
    CN110550060A|2019-12-10|
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    US10960903B2|2018-05-31|2021-03-30|Aktiebolaget Skf|Railcar adapter for connecting a railcar body to a bearing|US10974742B2|2018-05-31|2021-04-13|Aktiebolaget Skf|Railcar adapter for connecting a railcar body to a bearing|
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    法律状态:
    2020-05-27| PLFP| Fee payment|Year of fee payment: 2 |
    2021-03-05| PLSC| Search report ready|Effective date: 20210305 |
    2021-05-26| PLFP| Fee payment|Year of fee payment: 3 |
    优先权:
    申请号 | 申请日 | 专利标题
    US15/993,865|2018-05-31|
    US15/993,865|US10974742B2|2018-05-31|2018-05-31|Railcar adapter for connecting a railcar body to a bearing|
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