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WO2019172367A1 - Disque de frein de véhicule ferroviaire et frein à disque de véhicule ferroviaire - Google Patents

Disque de frein de véhicule ferroviaire et frein à disque de véhicule ferroviaire Download PDF

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Publication number
WO2019172367A1
WO2019172367A1 PCT/JP2019/009061 JP2019009061W WO2019172367A1 WO 2019172367 A1 WO2019172367 A1 WO 2019172367A1 JP 2019009061 W JP2019009061 W JP 2019009061W WO 2019172367 A1 WO2019172367 A1 WO 2019172367A1
Authority
WO
WIPO (PCT)
Prior art keywords
distance
brake
center
brake disc
contact surface
Prior art date
Application number
PCT/JP2019/009061
Other languages
English (en)
Japanese (ja)
Inventor
由衣子 阪山
Original Assignee
日本製鉄株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 日本製鉄株式会社 filed Critical 日本製鉄株式会社
Priority to JP2020505106A priority Critical patent/JP7031731B2/ja
Publication of WO2019172367A1 publication Critical patent/WO2019172367A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H5/00—Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • 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
    • F16D65/12—Discs; Drums for disc brakes

Definitions

  • the present invention relates to a brake disc for a railway vehicle and a disc brake having the same.
  • disc brakes are used in railway vehicles such as the Shinkansen.
  • the disc brake is, for example, a brake disc fixed to a disc-like rotating member that rotates integrally with the axle (a disc or a disc body fixed to the axle separately from the wheel), a brake lining having a friction member, And a brake caliper for moving the brake lining.
  • the brake disc When the temperature difference between the sliding surface and the rotating member side surface increases, the difference in thermal expansion between the sliding surface side portion and the rotating member side portion of the brake disc increases. As a result, the sliding surface side of the brake disk may compress and yield, and plastic deformation may occur. Thereafter, when the brake disc is cooled, the brake disc is warped. Specifically, the brake disc is warped so that the outer peripheral side of the brake disc is separated from the rotating member. When the brake disc is warped as described above, a large load is applied to a fastening member (bolt or the like) for fixing the brake disc to the rotating member, and the fastening member may be damaged.
  • a fastening member bolt or the like
  • a technique for suppressing the warpage of the brake disc as described above has been proposed.
  • a fastening hole for attaching a fastening member is formed in a sliding portion of the brake disc (an annular portion surrounded by the inner periphery and the outer periphery of the sliding surface). Yes.
  • the occurrence of warpage can be suppressed by fixing the sliding portion to the wheel by the fastening member.
  • an object of the present invention is to provide a railcar brake disc and a railcar disc brake capable of suppressing warpage and reducing the weight.
  • the present inventor has conducted various studies on the configuration of a brake disk capable of suppressing warpage and reducing the weight. Specifically, the present inventor conducted research by paying attention to the shape of fins provided on the back surface side (the above-described rotating member side) of the brake disc.
  • the present inventor has described the structure of a fin (hereinafter referred to as a locking fin) in which a key groove for fitting a key that locks the brake disk and a rotating member (wheel or the like) with each other is formed.
  • a fin hereinafter referred to as a locking fin
  • a rotating member wheel or the like
  • the inventor investigated the relationship between the shape of the locking fin and the warp generated in the brake disc after cooling.
  • the inventor of the present invention has disclosed a brake disc (hereinafter referred to as a first-shaped brake disc) having a configuration in which a portion outside the locking fin (outside in the radial direction of the brake disc) is cut from a conventional brake disc. The occurrence of warpage was investigated.
  • the present inventor describes a brake disc (hereinafter referred to as a second shape brake disc) having a configuration in which a portion inside the locking fin (inner side in the radial direction of the brake disc) is cut from a conventional brake disc. )), The occurrence of warpage was investigated. As a result, it was found that the first shape brake disk can more effectively suppress the occurrence of warpage than the second shape brake disk.
  • a brake disc hereinafter referred to as a second shape brake disc having a configuration in which a portion inside the locking fin (inner side in the radial direction of the brake disc) is cut from a conventional brake disc.
  • the present inventor studied to reduce the volume of the locking fin by cutting the outer portion of the locking fin in order to reduce the weight of the brake disk and suppress the warpage of the brake disk.
  • the contact area between the portion of the locking fin outside the keyway and the rotating member (wheel or the like) is reduced.
  • the contact area is reduced as described above, so that a sufficient frictional force is provided between the locking fin and the rotating member outside the keyway when braking the railway vehicle. It was found that there are cases where it cannot be generated. In this case, the portion of the locking fin outside the keyway can easily slide with respect to the rotating member.
  • the present inventor further researched a configuration for reducing the load applied to the key during braking of the vehicle.
  • the inventor appropriately sets the position of the fastening member in the radial direction of the brake disk, so that even when the outer portion of the locking fin is shaved, the locking fin has a portion outside the keyway. It has been found that a sufficient frictional force can be generated between the rotating member and the rotating member.
  • the present invention has been made on the basis of the above knowledge, and the gist of the following brake disk for a railway vehicle and the disk brake for a railway vehicle is as follows.
  • annular brake disk fixed to a disk-shaped rotating member that rotates integrally with an axle
  • An annular body A sliding portion protruding from the main body portion toward one side in the axial direction of the brake disc, and having an annular sliding surface at the end on the one side
  • a plurality of fins protruding from the main body portion toward the other side in the axial direction and extending radially with respect to the center of the brake disc as viewed from the axial direction;
  • the plurality of fins include a plurality of fastening fins having through holes for inserting fastening members, and a plurality of members having a key groove recessed from the other end in the axial direction toward one side in the axial direction.
  • a contact surface that comes into contact with the rotating member when the brake disc is fixed to the rotating member is provided around the key groove at the other end of the locking fin.
  • a brake disc for a railway vehicle wherein a distance from a center of the brake disc to a center of the through hole is larger than a distance from the center of the brake disc to a center of the contact surface in a radial direction of the brake disc.
  • an outer edge of the sliding surface is located outside an outer edge of the contact surface, an inner edge of the sliding surface is located inner than an inner edge of the contact surface, and the sliding surface
  • the brake disk for a railway vehicle according to (1) wherein a distance between an outer edge of the contact surface and an outer edge of the contact surface is greater than a distance between an inner edge of the sliding surface and an inner edge of the contact surface.
  • a railway vehicle disc brake comprising the brake disc according to any one of (1) to (5).
  • the present invention it is possible to suppress the occurrence of warpage in a brake disc for a railway vehicle and to reduce the weight of the brake disc.
  • FIG. 1 is a schematic view showing a railway vehicle disc brake according to the present embodiment.
  • FIG. 2 is a schematic view showing a railcar brake disk according to the present embodiment.
  • FIG. 3 is an end view showing the railcar brake disc according to the present embodiment.
  • FIG. 1 is a schematic diagram showing a railway vehicle disc brake according to the present embodiment
  • FIG. 2 is a schematic diagram showing a railway vehicle brake disc according to the present embodiment
  • FIG. It is an end elevation which shows the brake disk for rail vehicles which concerns.
  • 2A is a front view showing a quarter region in the circumferential direction of the brake disc
  • FIG. 2B is a rear view showing a quarter region in the circumferential direction of the brake disc.
  • . 1 and 3 show the end face of the brake disk at the II line cutting portion of FIG. 2 (b).
  • a railway vehicle disc brake 100 (hereinafter abbreviated as “disc brake 100”) includes a pair of brake discs 10 and a pair of brake linings 12.
  • the pair of brake disks 10 is fixed to the rotating member 102 so as to sandwich a hollow disk-shaped rotating member 102 fixed to an axle 101 of a railway vehicle (not shown).
  • the brake disk 10 and the rotating member 102 are provided so as to rotate integrally with the axle 101 and coaxially with the axle 101.
  • the rotating member 102 is a wheel. Therefore, in this embodiment, the brake disk 10 is a side disk (wheel mounted disk) that is directly attached to the wheel.
  • the rotating member 102 is referred to as a wheel 102.
  • the pair of brake linings 12 are provided outside the pair of brake discs 10 in the axial direction of the wheel 102.
  • the brake lining 12 can be moved in the axial direction of the wheel 102 by a brake caliper (not shown).
  • the brake lining 12 (friction member) can be pressed against a sliding surface 16a, which will be described later, of the brake disc 10, and a braking force can be generated.
  • various known wheels, brake linings, and brake calipers can be used as the wheels 102, the brake lining 12, and the brake calipers, and thus detailed description thereof is omitted.
  • the brake disk 10 has a main body portion 14, a sliding portion 16, a plurality of fastening fins 18, and a plurality of locking fins 20.
  • a part of the virtual circle 50 is indicated by a one-dot chain line
  • the position of the virtual circle 50 in the radial direction of the brake disk 10 is indicated by a one-dot chain line.
  • the circumference of the imaginary circle 50 passes through the center of each through hole 60 to be described later when viewed from the axial direction of the brake disk 10.
  • each of the plurality of through holes 60 is formed such that its center is located on the circumference of the virtual circle 50.
  • the center of the virtual circle 50 coincides with the center 10 a of the brake disk 10 (the center of the main body 14).
  • the center 10 a coincides with the rotation center of the brake disc 10.
  • the axial direction of the brake disc 10 is simply referred to as the axial direction.
  • the radial direction of the brake disc 10 is simply referred to as a radial direction.
  • the main body 14 has an annular shape.
  • the sliding part 16 protrudes from the main body part 14 toward one side in the axial direction.
  • the sliding part 16 has an annular sliding surface 16a at one end in the axial direction.
  • the sliding surface 16a is formed substantially perpendicular to the axial direction.
  • the sliding surface 16 a is a surface on which the brake lining 12 is pressed in order to generate a braking force in the disc brake 100.
  • the fastening fin 18 and the locking fin 20 each protrude from the main body portion 14 toward the other side in the axial direction.
  • Each of the fastening fins 18 and the locking fins 20 functions as a heat radiating portion.
  • the plurality of fastening fins 18 and the plurality of locking fins 20 are formed so as to extend radially with respect to the center 10a of the brake disc 10 when viewed from the axial direction.
  • each of the plurality of fastening fins 18 and the plurality of locking fins 20 is formed to extend in the radial direction when viewed from the axial direction.
  • the plurality of fastening fins 18 and the plurality of locking fins 20 are provided so as to be alternately arranged at intervals in the circumferential direction of the brake disc 10. In the present embodiment, twelve fastening fins 18 and twelve locking fins 20 are provided alternately.
  • the number of the fastening fins 18 and the locking fins 20 is not limited to the example shown in FIG. 2, and the number of the fastening fins 18 and the number of the locking fins 20 may be less than 12, respectively, There may be.
  • a plurality of through holes 60 penetrating the brake disc 10 in the axial direction are formed at intervals in the circumferential direction of the brake disc 10.
  • Each through hole 60 is formed to pass through the fastening fin 18.
  • the through hole 60 is formed for inserting a fastening member (bolt or the like) (not shown) for fixing the brake disc 10 to the wheel 102.
  • Each locking fin 20 is formed with a key groove 20a that is recessed from the other end in the axial direction toward one side in the axial direction.
  • a key 70 attached to a wheel 102 is fitted in the key groove 20a. Accordingly, the brake disc 10 and the wheel 102 are locked to each other via the key 70 in the circumferential direction of the brake disc 10.
  • omitted As a structure for attaching the key 70 and the key 70 to the wheel 102, since well-known various structures are employable, detailed description is abbreviate
  • a contact surface 20b substantially perpendicular to the axial direction is formed around the key groove 20a at the other end of the locking fin 20 in the axial direction.
  • the contact surface 20b has an annular shape so as to surround the key groove 20a when viewed from the axial direction.
  • the contact surface 20 b is a surface that contacts the wheel 102 when the brake disk 10 is fixed to the wheel 102.
  • the outer edge of sliding surface 16a is located outside the outer edge of contact surface 20b, and the inner edge of sliding surface 16a is located inside the inner edge of contact surface 20b.
  • the warpage of the brake disc 10 can be suppressed while reducing the weight of the brake disc 10 by reducing the volume of the radially outer portion of the locking fin 20.
  • the distance between the outer edge of the sliding surface 16a and the outer edge of the contact surface 20b is set larger than the distance between the inner edge of the sliding surface 16a and the inner edge of the contact surface 20b.
  • the distance between the outer edge of the contact surface 20b and the outer edge of the key groove 20a is set to be smaller than the distance between the inner edge of the contact surface 20b and the inner edge of the key groove 20a.
  • the distance from the center 10a of the brake disk 10 to the center of each through hole 60 is the contact between the center 10a of the brake disk 10 and the locking fin 20. It is larger than the distance to the center of the surface 20b (the center between the outer edge and the inner edge of the contact surface 20b in the radial direction). In other words, in the radial direction, the circumference of the virtual circle 50 is located outside the center of the contact surface 20b.
  • the center of each through hole 60 is located outside the center of the contact surface 20b in the radial direction.
  • the fastening member inserted into each through hole 60 causes the outer portion of the contact surface 20b to move with sufficient force.
  • 102 can be contacted. That is, even when the volume of the portion of the locking fin 20 that is radially outward from the keyway 20 a is reduced, a sufficient frictional force can be generated between the outer portion of the locking fin 20 and the wheel 102. Thereby, it can fully suppress that the part outside the keyway 20a among the latching fins 20 slides with respect to the wheel 102.
  • FIG. As a result, it is possible to suppress a large force from being generated between the outer portion of the locking fin 20 and the key 70 during braking of the railway vehicle, and to prevent the key 70 from being damaged.
  • the brake disc 10 is configured to satisfy the relationships of the following expressions (i), (ii), and (iii).
  • L1 is a radial distance from the center 10a (see FIG. 2) of the brake disk 10 to the inner edge of the sliding surface 16a
  • L2 is a sliding surface from the center 10a. It is the distance in the radial direction to the outer edge of 16a.
  • D1 is the distance in the radial direction from the center 10a to the inner edge of the contact surface 20b
  • D2 is the distance in the radial direction from the center 10a to the outer edge of the contact surface 20b.
  • the distance D1 is greater than the distance L1
  • the distance L2 is greater than the distance D2. 0.08 ⁇ (D1-L1) / (L2-L1) ⁇ 0.25 (i) 0.25 ⁇ (L2-D2) / (L2-L1) ⁇ 0.47 (ii) (D2-D1) / (L2-L1) ⁇ 0.5 (iii)
  • the radial distance (L2-D2) between the outer edge of the sliding surface 16a and the outer edge of the contact surface 20b can be made larger than the distance (D1-L1) between the inner edge of the sliding surface 16a and the inner edge of the contact surface 20b.
  • the radial distance (L2-D2) between the outer edge of the sliding surface 16a and the outer edge of the contact surface 20b is less than 1/4 of the length (L2-L1) of the sliding surface 16a in the radial direction.
  • the distance (D1-L1) between the inner edge of the sliding surface 16a and the inner edge of the contact surface 20b is 1 ⁇ 4 of the length (L2-L1) in the radial direction of the sliding surface 16a. It can be: Further, when the brake disk 10 satisfies the relationship of the above formula (iii), the length (D2-D1) in the radial direction of the contact surface 20b is changed to the length (L2-L1) in the radial direction of the sliding surface 16a. It can be less than 1/2 of this. As a result, even when the heating and cooling of the brake disc 10 are repeated, it is possible to suppress the occurrence of warpage in the outer peripheral portion of the brake disc 10. Moreover, the volume of the brake disc 10 can be reduced compared with the conventional brake disc. As a result, it is possible to reduce the weight of the brake disk 10 while suppressing the warpage of the brake disk 10.
  • the brake disc 10 satisfy
  • R is the radius of the virtual circle 50. Further, the distance D2 is larger than the radius R. (D2-R) / (L2-L1) ⁇ 0.25 (iv)
  • At least one of the key groove 20a and the through hole 60 is formed in each fin. However, in any one of the fins, the key groove and the through hole are formed. May not be formed.
  • the brake disk 10 may be an axle mounted disk.
  • the brake disc 10 may be fixed to a disc-shaped rotating member (disc body) fixed to the axle 101 separately from the wheels.
  • the disc body is provided so as to rotate integrally with the axle 101 and coaxially with the axle 101 like the wheel.
  • the brake disc 10 is an axial mount disc, the brake disc 10 is attached to the disc body using a fastening member and a key as in the case of the side disc.
  • the disc-shaped rotating member means a rotating member having a disc-shaped portion for fixing the brake disc. Therefore, like the wheel 102 shown in FIG. 1, the cylindrical part may be provided in the inner peripheral part and outer peripheral part of the rotating member.
  • the present invention it is possible to suppress the occurrence of warpage in a brake disc for a railway vehicle and to reduce the weight of the brake disc.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

L'invention concerne un disque de frein comportant : une partie corps annulaire ; une partie coulissante faisant saillie à partir de la partie corps vers un côté dans une direction axiale du disque de frein et comprenant une surface de glissement annulaire au niveau d'une partie d'extrémité sur ledit côté ; et une pluralité d'ailettes faisant saillie à partir de la partie corps vers un autre côté dans la direction axiale. La pluralité d'ailettes comprend une pluralité d'ailettes de fixation ayant un trou traversant pour insérer un élément de fixation et une pluralité d'ailettes de verrouillage comprenant une rainure de clavette. Une surface de contact qui entre en contact avec un élément rotatif qui tourne d'un seul tenant avec l'essieu est disposée autour de la rainure de clavette au niveau de la partie d'extrémité sur l'autre côté d'extrémité des ailettes de verrouillage. Dans une direction radiale du disque de frein, la distance entre le centre du disque de frein et le centre du trou traversant est supérieure à la distance entre le centre du disque de frein et le centre de la surface de contact.
PCT/JP2019/009061 2018-03-08 2019-03-07 Disque de frein de véhicule ferroviaire et frein à disque de véhicule ferroviaire WO2019172367A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020505106A JP7031731B2 (ja) 2018-03-08 2019-03-07 鉄道車両用ブレーキディスクおよび鉄道車両用ディスクブレーキ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018042335 2018-03-08
JP2018-042335 2018-03-08

Publications (1)

Publication Number Publication Date
WO2019172367A1 true WO2019172367A1 (fr) 2019-09-12

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PCT/JP2019/009061 WO2019172367A1 (fr) 2018-03-08 2019-03-07 Disque de frein de véhicule ferroviaire et frein à disque de véhicule ferroviaire

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JP (1) JP7031731B2 (fr)
TW (1) TWI701396B (fr)
WO (1) WO2019172367A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7672861B2 (ja) * 2021-04-02 2025-05-08 ナブテスコ株式会社 ブレーキディスク

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001311441A (ja) * 2000-02-23 2001-11-09 Sumitomo Metal Ind Ltd ブレーキディスク
JP2006009862A (ja) * 2004-06-23 2006-01-12 Sumitomo Metal Ind Ltd 鉄道車両用ブレーキディスク

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4417813A1 (de) * 1994-05-20 1995-11-23 Knorr Bremse Systeme Radbremsscheibe für Schienenfahrzeuge
JP4949930B2 (ja) * 2007-05-23 2012-06-13 株式会社栗本鐵工所 鉄道車両用ディスクブレーキ装置
DE102008003923A1 (de) * 2008-01-11 2009-07-30 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Schienenrad
JP5858806B2 (ja) * 2012-01-27 2016-02-10 新日鐵住金株式会社 ブレーキディスク付き鉄道車輪の組立て装置
US9587690B2 (en) * 2013-04-12 2017-03-07 Wabtec Holding Corp. Brake disc assembly for a wheel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001311441A (ja) * 2000-02-23 2001-11-09 Sumitomo Metal Ind Ltd ブレーキディスク
JP2006009862A (ja) * 2004-06-23 2006-01-12 Sumitomo Metal Ind Ltd 鉄道車両用ブレーキディスク

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JP7031731B2 (ja) 2022-03-08
JPWO2019172367A1 (ja) 2021-01-07
TWI701396B (zh) 2020-08-11
TW201945649A (zh) 2019-12-01

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