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WO2025234384A1 - Dispositif de support de boîte d'essieu pour bogie de véhicule ferroviaire - Google Patents

Dispositif de support de boîte d'essieu pour bogie de véhicule ferroviaire

Info

Publication number
WO2025234384A1
WO2025234384A1 PCT/JP2025/016398 JP2025016398W WO2025234384A1 WO 2025234384 A1 WO2025234384 A1 WO 2025234384A1 JP 2025016398 W JP2025016398 W JP 2025016398W WO 2025234384 A1 WO2025234384 A1 WO 2025234384A1
Authority
WO
WIPO (PCT)
Prior art keywords
support arm
axle box
bogie
mandrel
hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2025/016398
Other languages
English (en)
Japanese (ja)
Inventor
琢磨 島本
宏光 石河
郁矢 庄野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kawasaki Railcar Manufacturing Co Ltd
Original Assignee
Kawasaki Railcar Manufacturing Co Ltd
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 Kawasaki Railcar Manufacturing Co Ltd filed Critical Kawasaki Railcar Manufacturing Co Ltd
Publication of WO2025234384A1 publication Critical patent/WO2025234384A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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

Definitions

  • the present invention relates to an axle box support device for a railway vehicle bogie.
  • Patent Document 1 discloses an axle box support device for railway vehicles that includes an inner cylinder attached to the side beam so as to extend downward from the side beam, an axle box that supports the axle via bearings, and a support arm that extends from the axle box toward the inner cylinder in the longitudinal direction of the vehicle and surrounds the outer periphery of the inner cylinder, with support rubber provided between the inner cylinder and the support arm.
  • the support rubber is provided on the outside of the inner tube and inside the support arm, so when manufacturing the railway vehicle axle box suspension device, the support rubber needs to be attached to the inside of the tip of the support arm.
  • a mounting hole that penetrates vertically is provided at the tip of the support arm, and the support rubber is press-fitted into the inside of the mounting hole.
  • Patent Document 1 the support rubber is press-fit into the mounting hole of the support arm, so a special device such as a press is required to attach the support rubber to the support arm. Therefore, the worker must carry the support rubber and support arm to the press or other device each time they perform the installation work, which can make the worker's work more complicated.
  • one aspect of the present disclosure aims to facilitate the installation of axle box support devices on railway vehicle bogies equipped with coil springs interposed between the upper surface of the axle box and the bogie frame.
  • the axle box support device for a railway vehicle bogie disclosed herein is an axle box support device for a railway vehicle bogie equipped with a coil spring interposed between the upper surface of the axle box and the bogie frame, and includes a support arm that protrudes from the axle box on one side in the fore-and-aft direction of the bogie and supports the axle box, an outer tube having an axis, tubular rubber arranged inside the outer tube, and a mandrel arranged inside the tubular rubber, and is equipped with a cylindrical laminated rubber arranged on the one side of the axle box, a fixing device that fixes the outer tube that forms the outer peripheral surface of the cylindrical laminated rubber to the bogie frame with the outer peripheral surface of the cylindrical laminated rubber exposed, and a positioning part that positions the mandrel on the support arm.
  • the outer tube is fixed to the bogie frame with the outer peripheral surface of the cylindrical rubber bearing exposed, and the cylindrical rubber bearing is fixed to the bogie frame without being pressed in.
  • the cylindrical rubber bearing is fixed to the bogie frame without using special equipment such as a press. Since there is no need to transport the cylindrical rubber bearing to special equipment such as a press when fixing the cylindrical rubber bearing to the bogie frame, workers can assemble the bogie more easily.
  • FIG. 2 is a side view of a bogie of a railway vehicle.
  • FIG. 2 is a side view of the axle box support device of the bogie of FIG. 1 .
  • FIG. 3 is a plan view of the axle box support device of FIG. 2; 3 is a cross-sectional view taken along a plane extending in the longitudinal and vertical directions in the cylindrical laminated rubber of the axle box support device of FIG. 2.
  • FIG. 2 is a cross-sectional view of a modified axle box support device of FIG. 1 taken along a horizontal plane of a portion where the mandrel is attached to the support arm.
  • FIG. 10 is a side view of a portion of another modified example of the axle box support device of FIG. 1 where the closure plate abuts from below on the lower surface of the support arm. 1 ⁇ , ⁇ FIG. 1 another modification of the axle box support device, shows a side view of the support arm from below the lower surface of the closure plate abutting.
  • the direction in which the railway vehicle travels and in which the car body extends is the longitudinal direction of the vehicle, which is the fore-and-aft direction of the vehicle, and the lateral direction perpendicular to this is the transverse direction of the vehicle, which is the left-right direction of the vehicle.
  • Figure 1 is a side view of the bogie 2 of a railway vehicle 1.
  • Figure 2 is an enlarged side view of the front axle box suspension device in the fore-and-aft direction of the bogie 2 of Figure 1.
  • the railway vehicle 1 comprises the bogie 2, a carbody 3, and air springs 4 arranged between the bogie 2 and the carbody 3.
  • the air springs 4 function as secondary suspension.
  • the bogie 2 comprises a bogie frame 5 that supports the carbody 3 via the air springs 4.
  • a pair of wheel sets 6 are arranged on both sides of the bogie frame 5 in the longitudinal direction of the vehicle.
  • the wheel sets 6 have an axle 6a extending along the vehicle width direction and wheels 6b provided on both sides of the axle 6a in the vehicle width direction.
  • a brake 7 is arranged opposite the tread of the wheel 6b, and presses the tread of the wheel 6b from the inside toward the outside in the longitudinal direction of the vehicle, slowing down and stopping the rotation of the wheel 6b.
  • the bogie 2 is equipped with an axle box suspension 8.
  • the axle box suspension 8 is attached to the bogie 2 and supports an axle box 9.
  • the axle box 9 houses a bearing 10 that supports the axle 6a.
  • the axle box suspension 8 includes a coil spring 12.
  • the axle box 9 is connected to the bogie frame 5 via the coil spring 12 of the axle box suspension 8.
  • the coil spring 12 is interposed between the bogie frame 5 and the axle box 9.
  • the coil spring 12 functions as a primary suspension.
  • FIG 2 is an enlarged side view of the front axle box support device 8 of the bogie 2 shown in Figure 1 in the longitudinal direction, and also shows a portion of the internal structure of the axle box 9.
  • the axle box support device 8 comprises a coil spring 12, a support arm 13, and a cylindrical laminated rubber 14.
  • the coil spring 12 is interposed between the upper surface 9a of the axle box 9 and the bogie frame 5.
  • the support arm 13 protrudes from the axle box 9 toward the center of the bogie 2 in the longitudinal direction of the vehicle, and supports the axle box 9.
  • the bogie frame 5 has a side beam 15 and a receiving seat 16 that protrudes downward from the underside of the side beam 15.
  • the receiving seat 16 is fixedly attached to the underside of the side beam 15 by welding.
  • the receiving seat 16 may also be attached to the side beam 15 by a method other than welding.
  • the receiving seat 16 may be attached to the side beam 15 by bolting.
  • a cylindrical laminated rubber 14 is attached to the lower part of the receiving seat 16.
  • the cylindrical laminated rubber 14 has an outer tube 17 on the radial outside.
  • the outer tube 17 of the cylindrical laminated rubber 14 has a tab 18 that protrudes horizontally outward from the outer surface 17a.
  • the receiving seat 16 of the bogie frame 5 has a tab 19 that protrudes horizontally outward beyond the outer surface 17a of the outer tube 17 of the cylindrical laminated rubber 14 and overlaps the tab 18 of the outer tube 17.
  • the axle box support device 8 also has bolts 20 that fasten the tabs 19 of the receiving seats 16 to the tabs 18 of the cylindrical laminated rubber 14.
  • the tabs 19 of the receiving seats 16 and the tabs 18 of the outer cylinders 17 of the cylindrical laminated rubber 14 are fastened together by the bolts 20, attaching the cylindrical laminated rubber 14 to the side beams 15.
  • FIG 3 shows an enlarged plan view of the front axle box support device 8 in the fore-and-aft direction of the bogie frame 5.
  • two tabs 19 are provided on the support seat 16 at the front of the bogie frame 5. That is, the tabs 19 of the support seat 16 are provided on both the outer and inner sides of the side sill 15 in the left-right direction.
  • the two tabs 19 are provided symmetrically with respect to the central axis L1 of the cylindrical laminated rubber 14.
  • the cylindrical laminated rubber 14 is provided with two tabs 18 corresponding to the two tabs 19 of the support seat 16. Therefore, the cylindrical laminated rubber 14 also has two tabs 18 provided symmetrically with respect to the central axis L1.
  • a through hole is provided in the tab 19 of the support seat 16, and a screw hole is provided in the tab 18 of the outer cylinder 17 of the cylindrical laminated rubber 14.
  • Bolts 20 fasten the outer tube 17 that forms the outer surface of the cylindrical rubber bearing 14 to the bogie frame 5, fixing the cylindrical rubber bearing 14 to the bogie frame 5.
  • the bolts 20 function as fasteners that fasten the tabs 19 of the seat 16 and the tabs 18 of the cylindrical rubber bearing 14 together.
  • Figure 4 is a cross-sectional view of the cylindrical rubber bearing 14 of the axle box support device 8 of Figure 2, taken along a plane that passes through the central axis L1 and extends in the longitudinal and vertical directions.
  • the cylindrical rubber bearing 14 has a tubular rubber 21 and a core 22.
  • the outer tube 17 and the core 22 are made of metal.
  • the cylindrical rubber bearing 14 is positioned toward the center of the bogie in the longitudinal direction of the vehicle relative to the axle box 9.
  • the outer tube 17 has an axis L1 that extends vertically, which is the same as the central axis L1 of the cylindrical rubber bearing 14, and extends along the vertical direction.
  • the tubular rubber 21 is arranged radially inside the outer tube 17.
  • multiple tubular bodies 23 are provided radially inside the outer tube 17 and radially outside the mandrel 22.
  • the tubular bodies 23 are formed from metal.
  • Two tubular bodies 23 are provided radially between the outer tube 17 and the mandrel 22.
  • multiple tubular rubbers 21 are provided radially inside the outer tube 17 and radially outside the mandrel 22.
  • Three tubular rubbers 21 are provided radially between the outer tube 17 and the mandrel 22.
  • the three tubular rubbers 21 are provided between the outer tube 17 and the tubular bodies 23, between the tubular bodies 23, and between the tubular bodies 23 and the mandrel 22.
  • tubular bodies 23 made of metal and tubular rubbers 21 are alternately stacked radially.
  • the tubular rubber 21 is vulcanization bonded to the outer tube 17, tubular body 23, or mandrel 22.
  • the mandrel 22 is positioned radially inside the tubular rubber 21.
  • the mandrel 22 has an axis L1 that extends vertically and is the same as the central axis L1 of the cylindrical laminated rubber 14, and extends along the vertical direction.
  • the mandrel 22 has two screw holes 24.
  • the screw holes 24 extend vertically upward from the lower end 22a, which is the end of the mandrel 22.
  • the mandrel 22 has a hollow shape with an internal space defined along the central axis L1.
  • the internal space of the mandrel 22 is open at the top and closed at the bottom.
  • the inner surface 22b slopes outward as it extends upward, and the radial thickness becomes thinner as it approaches the upper end 22c.
  • the support arm 13 has a through hole 13a that is open in the vertical direction.
  • the lower end 22a of the mandrel 22 is inserted into the through hole 13a of the support arm 13 from above.
  • a closure plate 25 is arranged below the through hole 13a of the support arm 13.
  • the closure plate 25 is separate from the mandrel 22.
  • the closure plate 25 is larger than the through hole 13a and interferes with the portion of the support arm 13 surrounding the through hole 13a from below.
  • the closure plate 25 has a through hole 25a that is open in the vertical direction.
  • the support arm 13 is arranged above the through hole 13a and has a recess 13b that is larger in diameter than the through hole 13a and is open upward. In other words, the through hole 13a extends downward from the bottom of the recess 13b.
  • the closure plate 25 abuts from below against the underside of the support arm 13, which serves as the end face of the through hole 13a.
  • the bolt 26 passes through the through hole 25a of the closure plate 25 from below the support arm 13 and is fastened to the lower end 22a of the mandrel 22. Therefore, the closure plate 25 abutting against the support arm 13 from below and the bolt 26 fastened to the mandrel 22 function as a positioning part that positions the lower end 22a of the mandrel 22 on the support arm 13.
  • the axle box support device 8 has a base 27 interposed between the support arm 13 and the mandrel 22.
  • the base 27 is housed in the recess 13b of the support arm 13.
  • the mandrel 22 has a lower end shaft portion 22e as a first shaft portion inserted into the through hole 13a of the support arm 13, and an intermediate shaft portion 22d as a second shaft portion positioned above the lower end shaft portion 22e and having a larger diameter than the lower end shaft portion 22e.
  • the diameter of the mandrel 22 changes at the boundary between the intermediate shaft portion 22d and the lower end shaft portion 22e, and a step 22f is formed on the outer surface.
  • the base 27 abuts against the step 22f at the boundary between the intermediate shaft portion 22d and the lower end shaft portion 22e on the outer surface of the mandrel 22.
  • the load on the mandrel 22 is supported by the support arm 13 via the base 27.
  • the cylindrical laminated rubber 14 is supported from below by the support arm 13.
  • the area surrounding the through hole 13a of the support arm 13 is sandwiched vertically between the step 22f of the mandrel 22 and the closure plate 25.
  • the upper portion 16a and lower portion 16b of the receiving seat 16 have different diameters.
  • the upper portion 16a has a larger diameter than the lower portion 16b.
  • the outer diameter of the outer tube 17 of the cylindrical laminated rubber 14 is approximately the same as the outer diameter of the upper portion 16a of the receiving seat 16, and the inner diameter is approximately the same as the outer diameter of the lower portion 16b of the receiving seat 16.
  • the coil springs 12 and the tubular rubber 21 in the cylindrical rubber laminate 14 are displaced while elastically deforming, allowing the coil springs 12 and the tubular rubber 21 to absorb kinetic energy in the vertical direction. Furthermore, with regard to horizontal displacement, the tubular rubber 21 in the cylindrical rubber laminate 14 is displaced while elastically deforming, allowing the tubular rubber 21 to absorb kinetic energy in the horizontal direction.
  • the outer tube 17 is fixed to the bogie frame 5 with the outer peripheral surface 28 of the cylindrical rubber bearing 14 exposed, and the cylindrical rubber bearing 14 is fixed to the bogie frame 5 without being press-fitted. Therefore, the cylindrical rubber bearing 14 is fixed to the bogie frame 5 without using special equipment such as a press. Since there is no need to transport the cylindrical rubber bearing 14 to a special device such as a press when fixing the cylindrical rubber bearing 14 to the bogie frame 5, workers can more easily assemble the bogie 2. Furthermore, since there is no need to use special equipment such as a press when assembling the bogie 2, the manufacturing costs of the bogie 2 can be kept low. Furthermore, during maintenance of the bogie 2, the cylindrical rubber bearing 14 can be easily replaced by removing the cylindrical rubber bearing 14 from the bogie frame 5 and support arm 13 and attaching a new cylindrical rubber bearing 14 to the bogie frame 5 and support arm 13.
  • the axle 22 is inserted into the through-hole 13a of the support arm 13, the closure plate 25 is abutted against the support arm 13 from below the through-hole 13a, and the closure plate 25 is clamped from below and fastened to the lower end 22a of the axle 22 by the bolt 26.
  • the axle 22 can be securely and easily positioned and fixed to the support arm 13 without having to be press-fitted into the support arm 13.
  • no special equipment such as a press is required to attach and detach the axle 22 from the support arm 13, which helps keep the manufacturing costs of the bogie 2 low.
  • the cylindrical rubber bearing 14 is supported by the support arm 13 via the base 27, the cylindrical rubber bearing 14 can be stably supported. Furthermore, because the upper end 17c of the outer tube 17 fits into the receiving seat 16 of the bogie frame 5 from below, the outer tube 17 can be temporarily fixed to the receiving seat 16 by fitting, and then fixed by bolts between the outer tube 17 and the receiving seat 16. Therefore, workers assembling or maintaining the bogie 2 can easily fix the outer tube 17 to the receiving seat 16. Furthermore, because the outer tube 17 is fixed to the bogie frame 5 by fastening the tab 19 of the receiving seat 16 of the bogie frame 5 and the tab 18 of the outer tube 17 of the cylindrical rubber bearing 14 with the bolt 20, the outer tube 17 can be easily fixed to the bogie frame 5.
  • the axle box support device 8 of this embodiment allows the cylindrical rubber bearing 14 to displace more vertically than an axle-beam type axle box support device. Therefore, as the coil spring 12 displaces vertically, the tubular rubber 21 displaces relative to the outer tube 17, and the axle 22 displaces in the same manner as the coil spring 12. In this case, the tubular rubber 21 of the cylindrical rubber bearing 14 displaces significantly, allowing the cylindrical rubber bearing 14 to absorb a large amount of vertical displacement. Therefore, when the rear end of the support arm 13 in the fore-and-aft direction is displaced due to displacement of the axle 22, it is not necessary to rotate the support arm 13 to absorb the vertical displacement. This allows the fore-and-aft length of the support arm 13 to be shortened. Because the support arm 13 can be shortened, the brake 7 is exposed to the outside in the left-right direction. Therefore, the ease of operation by the maintenance worker during maintenance of the bogie 2 can be improved.
  • the cylindrical rubber bearings 14 are attached to the bogie frame 5 and support arms 13 by fastening the tabs 19 of the bearing seats 16 to the tabs 18 of the outer cylinder 17 with bolts 20, and by fastening the support arms 13 to the axle rods 22 with bolts 26.
  • special tools are required to remove the axle box from the bogie frame for maintenance.
  • wear and deformation occur at the locations where the wedges are placed, which can affect the durability of the axle box suspension.
  • a configuration has been described in which the tabs on the outer tube of the cylindrical rubber bearing and the tabs on the seat of the bogie frame are fastened together with bolts.
  • the fastener is a bolt.
  • the closure plate abuts the underside of the support arm from below, and the bolt fastens the closure plate to the lower end of the axle from below, thereby fixing the axle to the support arm.
  • the positioning part is a closure plate and a bolt.
  • the fastener and positioning part may have a different configuration. As long as the cylindrical rubber bearing is attached to the bogie frame and the cylindrical rubber bearing is attached to the support arm, the fastener and positioning part may have a different configuration.
  • a cylindrical mandrel 22 is inserted into the through hole 13a in the support arm 13, and the through hole 13a has a circular cross section along a horizontal plane.
  • the mandrel 22 and the support arm 13 may include a rotation prevention structure 30 that inhibits rotation of the mandrel 22 around the axis of the through hole 13a.
  • the mandrel 22 may have a side surface formed on its outer periphery that prevents rotation around the axis of the through hole 13a, and a side surface formed on the outer periphery of the through hole 13a that prevents rotation around the axis.
  • Figure 5 shows a cross-sectional view of a horizontal cross section of the mandrel 22 and support arm 13 in a modified example.
  • a side surface 22g extending in the width direction and up and down is provided on one side of the outer periphery of the mandrel 22, facing the axle box 9 in the front-to-rear direction.
  • the through hole 13a in the support arm 13 also has a side surface 13d extending in the width direction and up and down, corresponding to the side surface 22g of the mandrel 22.
  • the through hole 13a of the support arm 13 has a side surface 13d extending in the width direction and up and down on the axle box 9 side in the front-to-rear direction.
  • the mandrel 22 has a side surface 22g extending in the width direction and vertical direction on its outer periphery, and the through hole 13a of the support arm 13 has a side surface 13d extending in the width direction and vertical direction.
  • the cross section of the mandrel 22 along the horizontal plane is not circular, and the cross section of the through hole 13a of the support arm 13 along the horizontal plane is not circular. Therefore, when attaching the axle box 9 to the cylindrical rubber bearing 14, the mandrel 22 can be prevented from rotating around the axis of the through hole 13a inside the through hole 13a and becoming misaligned. This makes it possible to easily attach the axle box 9 to the cylindrical rubber bearing 14.
  • Figure 5 describes a configuration in which the mandrel 22 has a side surface 22g extending in the width direction and vertical direction on the axle box 9 side in the front-to-rear direction, and the through hole 13a has a side surface 13d extending in the width direction and vertical direction on the axle box 9 side in the front-to-rear direction, but this is not limited to the above embodiment.
  • the position of side surface 22g on the axle 22 and the position of side surface 13d on the through hole 13a do not have to be on the axle box 9 side in the fore-and-aft direction. They may be on the brake 7 side in the fore-and-aft direction.
  • side surface 22g may be located anywhere on the outer periphery of the axle 22, and side surface 13d may be located anywhere on the through hole 13a.
  • the lower tip of the portion of the support arm 13 that supports the cylindrical laminated rubber 14 is cylindrical, and the through hole 13a of the support arm 13 is closed from below by a disk-shaped closure plate 25, but this is not limited to the above embodiment.
  • the support arm 13 and the closure plate 25 may include a rotation prevention structure 31 that prevents the closure plate 25 from rotating relative to the support arm 13 around the axis of the through hole 13a.
  • Figure 6 shows a side view of the support arm 13 and the closure plate 25 in another modified example, at the portion where the closure plate 25 abuts against the underside of the support arm 13 from below.
  • the closure plate 25 is provided with a convex portion 25b that protrudes upward
  • the support arm 13 is provided with a concave portion 13h
  • the convex portion 25b of the closure plate 25 and the concave portion 13h of the support arm 13 fit together. Because the convex portion 25b and the concave portion 13h fit together between the support arm 13 and the closure plate 25, rotation of the closure plate 25 relative to the support arm 13 around the axis of the through hole 13a is prevented. That is, the closure plate 25 and the support arm 13 have the convex portion 25b and the concave portion 13h as a rotation prevention structure 31 that inhibits rotation of the axle 22 fastened to the closure plate 25 around the axis of the through hole 13a.
  • Figure 7 shows a side view of the support arm 13 and closure plate 25 in a further modified example, showing a rotation prevention structure 32 at the portion where the closure plate 25 abuts the underside of the support arm 13 from below.
  • a downwardly protruding convex portion 13k is provided on the support arm 13
  • a concave portion 25c is provided on the closure plate 25
  • the convex portion 13k of the support arm 13 and the concave portion 25c of the closure plate 25 fit together.
  • the rotation prevention structure 32 for the closure plate 25 and support arm 13 may be a combination of the downwardly protruding convex portion 13k on the support arm 13 and the concave portion 25c of the closure plate 25.
  • the central axis L1 of the cylindrical laminated rubber 14, the axis L1 of the outer tube 17, and the axis L1 of the mandrel 22 extend vertically.
  • the mandrel 22 may have a first shaft portion inserted into the through hole 13a and a second shaft portion having a larger diameter than the first shaft portion, and the support arm 13 may be located on the side of the through hole 13a closer to the second shaft portion, have a larger diameter than the through hole 13a, and have a recess 25c that opens toward the second shaft portion. That is, for example, the through hole 13a and recess 25c of the support arm 13 may be open horizontally or in another direction, and the first shaft portion of the mandrel 22 may be inserted into such through hole 13a, and the base 27 may be housed in such recess 25c.
  • An axle box support device for a bogie of a railway vehicle comprising a coil spring interposed between an upper surface of an axle box and a bogie frame, a support arm that protrudes from the axle box on one side in the front-rear direction of the bogie and supports the axle box; a cylindrical laminated rubber member having an outer cylinder having an axis, a tubular rubber member disposed inside the outer cylinder, and a mandrel disposed inside the tubular rubber member, the laminated rubber member being disposed on the one side of the axle box; a fastener for fastening the outer cylinder constituting the outer peripheral surface of the cylindrical laminated rubber to the bogie frame in a state in which the outer peripheral surface of the cylindrical laminated rubber is exposed; a positioning portion that positions the axle on the support arm.
  • the support arm has a through hole; an end of the mandrel inserted into the through hole of the support arm; 2.
  • the mandrel has a first shaft portion inserted into the through hole and a second shaft portion having a larger diameter than the first shaft portion, the support arm further includes a recessed portion that is disposed in the through hole on a side closer to the second shaft portion, has a larger diameter than the through hole, and is open toward the second shaft portion;
  • the base is accommodated in the recess of the support arm, 3.
  • the bogie frame has a side beam and a receiving seat protruding from the side beam, 4.
  • the axle box support device for a bogie of a railway vehicle according to any one of items 1 to 3, wherein an end of the outer cylinder of the cylindrical laminated rubber is fitted into the seat.
  • the outer cylinder of the cylindrical laminated rubber has a tab protruding outward, the bogie frame has a tab that protrudes outward and overlaps the tab of the outer cylinder; 5.
  • the axle box support device for a bogie of a railway vehicle according to any one of items 1 to 4, wherein the fastener fastens the tab of the outer tube to the tab of the bogie frame.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

L'invention concerne un dispositif de support de boîte d'essieu qui est destiné à un bogie de véhicule ferroviaire et qui est équipé d'un ressort hélicoïdal interposé entre une surface supérieure d'une boîte d'essieu et un châssis de bogie, ledit dispositif comprenant : un bras de support qui fait saillie à partir de la boîte d'essieu sur un côté dans la direction avant-arrière du bogie et supporte la boîte d'essieu ; un caoutchouc cylindrique stratifié qui présente un cylindre extérieur comportant une ligne d'arbre, un caoutchouc cylindrique disposé à l'intérieur du cylindre extérieur, et un essieu disposé à l'intérieur du caoutchouc cylindrique et qui est disposé sur un côté de la boîte d'essieu ; un outil de fixation qui fixe le cylindre extérieur, qui constitue la surface circonférentielle extérieure du caoutchouc stratifié cylindrique, au cadre de bogie dans un état dans lequel la surface circonférentielle extérieure du caoutchouc stratifié cylindrique est exposée ; et une partie de positionnement pour positionner l'essieu sur le bras de support.
PCT/JP2025/016398 2024-05-08 2025-04-30 Dispositif de support de boîte d'essieu pour bogie de véhicule ferroviaire Pending WO2025234384A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2024076074 2024-05-08
JP2024-076074 2024-05-08

Publications (1)

Publication Number Publication Date
WO2025234384A1 true WO2025234384A1 (fr) 2025-11-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2025/016398 Pending WO2025234384A1 (fr) 2024-05-08 2025-04-30 Dispositif de support de boîte d'essieu pour bogie de véhicule ferroviaire

Country Status (1)

Country Link
WO (1) WO2025234384A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61153667U (fr) * 1985-03-15 1986-09-24
JPH05238389A (ja) * 1991-03-15 1993-09-17 Kinki Nippon Tetsudo Kk 鉄道車両用軸箱支持装置
JP2002331930A (ja) * 2001-05-11 2002-11-19 Kinki Sharyo Co Ltd 鉄道車両用軸箱支持装置
JP2010264910A (ja) * 2009-05-15 2010-11-25 Nippon Sharyo Seizo Kaisha Ltd 鉄道車両用台車
KR101989988B1 (ko) * 2017-12-07 2019-06-17 한국철도기술연구원 철도차량용 축상고무스프링 조립체 구조
JP2020070909A (ja) * 2018-11-02 2020-05-07 ニッタ化工品株式会社 軸ばね

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61153667U (fr) * 1985-03-15 1986-09-24
JPH05238389A (ja) * 1991-03-15 1993-09-17 Kinki Nippon Tetsudo Kk 鉄道車両用軸箱支持装置
JP2002331930A (ja) * 2001-05-11 2002-11-19 Kinki Sharyo Co Ltd 鉄道車両用軸箱支持装置
JP2010264910A (ja) * 2009-05-15 2010-11-25 Nippon Sharyo Seizo Kaisha Ltd 鉄道車両用台車
KR101989988B1 (ko) * 2017-12-07 2019-06-17 한국철도기술연구원 철도차량용 축상고무스프링 조립체 구조
JP2020070909A (ja) * 2018-11-02 2020-05-07 ニッタ化工品株式会社 軸ばね

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