WO2020007071A1 - Essieu monté pour bogie à calibre variable de véhicule ferroviaire et bogie - Google Patents

Essieu monté pour bogie à calibre variable de véhicule ferroviaire et bogie Download PDF

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Publication number
WO2020007071A1
WO2020007071A1 PCT/CN2019/079051 CN2019079051W WO2020007071A1 WO 2020007071 A1 WO2020007071 A1 WO 2020007071A1 CN 2019079051 W CN2019079051 W CN 2019079051W WO 2020007071 A1 WO2020007071 A1 WO 2020007071A1
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WO
WIPO (PCT)
Prior art keywords
wheel
bearing
locking
gauge
axle
Prior art date
Application number
PCT/CN2019/079051
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English (en)
Chinese (zh)
Inventor
王旭
蒯荣生
梁海啸
吕建法
王玉光
张志波
刘晓妍
黄运华
Original Assignee
中车青岛四方机车车辆股份有限公司
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
Priority claimed from CN201810732191.9A external-priority patent/CN108909360B/zh
Priority claimed from CN201810732522.9A external-priority patent/CN108909762B/zh
Application filed by 中车青岛四方机车车辆股份有限公司 filed Critical 中车青岛四方机车车辆股份有限公司
Publication of WO2020007071A1 publication Critical patent/WO2020007071A1/fr

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    • 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
    • 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
    • B61F7/00—Rail vehicles equipped for use on tracks of different width

Definitions

  • the present application relates to the technical field of rail vehicle variable gauge, in particular to a wheelset and a bogie for a rail vehicle variable gauge truck.
  • variable gauge bogie in Spain adopts the form of independent wheel sets. This solution requires additional guidance structure, which has a complicated structure.
  • the variable gauge bogie in Japan sets the sliding mechanism on the inside of the wheel, and adds an outer outside the axle.
  • the sleeve is equivalent to increasing the diameter of the axle, thereby limiting the design space of the motor and the gear box, and placing higher requirements on the gear box bearing, increasing the cost and reducing the life.
  • This application is intended to solve at least one of the technical problems existing in the prior art or related technologies.
  • the purpose of this application is to provide a wheelset and a bogie for a variable-gauge bogie of a rail vehicle capable of adapting to different gauges, in which the original arrangement of the bogie components of the high-speed EMU is ensured to the greatest extent, so as to improve the change of the rail vehicle. Versatility and reliability of gauge bogies.
  • an embodiment of the present application provides a wheel set for a variable-gage bogie of a rail vehicle, which includes a wheel, an axle, and a locking component; a hub of the wheel is located outside the wheel and has a connection extending outward.
  • An inner spline is provided on the inner periphery of the hub of the wheel and / or the inner periphery of the connecting sleeve, and an outer spline matching the inner spline is provided on each end of the axle, and the wheel Connected with the axle through the inner spline and the outer spline;
  • the locking components are respectively press-fitted on the outer periphery of the connection sleeve of the wheel, and are located in the axle boxes at both ends of the axle, the locking The component is configured to drive the wheel to move or lock along the axial direction of the axle box body, so as to realize the wheel gauge change.
  • the locking assembly includes a bearing assembly, a bearing housing, and a locking rod.
  • An inner circumferential projection of the bearing housing is provided, and the annular positioning protrusion separates an inner peripheral surface of the bearing housing into Press-fitting working surface and locking working surface; the inner ring of the bearing assembly is press-fitted on the outer periphery of the connection sleeve, and the outer ring of the bearing assembly is press-fitted on the press-fitting working surface of the bearing housing.
  • the bearing housing is clearance-fitted with the shaft case;
  • the locking working surface is provided with a plurality of inner ring grooves spaced apart along its axial direction, and a sliding groove axially penetrating the plurality of inner ring grooves is provided.
  • the bottom of the shaft box body is provided with the sliding grooves.
  • a corresponding fitting hole; the locking lever includes a locking head and an unlocking head, the locking head is configured to snap into the inner ring groove to lock the wheel and the axle box body, and the unlocking head extends
  • the sliding groove and the matching hole are made out, and the locking head can be switched between a plurality of the inner ring grooves under the action of an external force, so as to realize a wheel gauge change.
  • the locking lever includes a lever body, one end of the lever body is provided with a circular arc section to form the locking head, the unlocking head is provided at the other end of the lever body, and the arc section and the width of the circular arc section Matching with the inner ring groove; the rod body is sequentially penetrated from the sliding groove and the matching hole, the rod body is provided with a spring bearing, and the rod body is located on the spring bearing and the shaft box body Locking springs are sleeved between.
  • the bearing assembly includes a double-row tapered roller bearing, a bearing retaining ring and a seal ring.
  • the two ends of the double-row tapered roller bearing are respectively provided with the bearing retaining ring.
  • the double-row tapered roller bearing is provided with the seal ring between two ends thereof, and one end of the bearing assembly abuts against the annular positioning boss.
  • a limiting retaining ring is provided on the outer end of the bearing housing on the press-fitting working surface.
  • the inner ring groove includes two, and the distance between the two inner ring grooves is equal to half of the required variable gauge.
  • the arc segment is a third arc; the unlocking head is a T-shaped lock.
  • the sliding groove and the fitting hole are both square, and the width is equal to the width of the rod body.
  • connecting sleeve is integrally formed with the hub.
  • the present application also provides a rail vehicle variable gauge bogie, which includes a frame on which two sets of the above-mentioned rail vehicle variable gauge bogie wheel pairs are mounted.
  • the embodiment of the present application also provides a locking mechanism for a variable gauge wheelset, which includes a bearing jacket and a locking rod, and the inner periphery of the bearing jacket is provided with a locking working surface;
  • the locking working surface is provided with a plurality of inner ring grooves at intervals along its axial direction, and a sliding groove is provided through the plurality of inner ring grooves in an axial direction.
  • the locking lever includes a locking head and an unlocking head.
  • the locking head is configured to be snapped into the inner ring groove to achieve locking; the unlocking head extends out of the sliding groove and can cause the locking head to leave the inner ring groove under the action of an external force, Achieve unlock.
  • annular positioning boss is provided on the inner periphery of the bearing housing, and the annular positioning boss separates the inner peripheral surface of the bearing housing into a press-fitting working surface and the locking working surface;
  • the locking mechanism further includes a bearing assembly and a connecting sleeve, an inner ring of the bearing component is press-fitted on an outer periphery of the connecting sleeve, and an outer ring of the bearing component is press-fitted on the press-fitting working surface; the connection The sleeve is configured to be fixedly connected to the outside of the hub of the wheel.
  • the locking mechanism is installed on the axle outside the wheel through the connection sleeve, and is located in the axle box at both ends of the axle; the bearing outer sleeve is fitted with the axle box in a clearance fit.
  • connection sleeve is integrally formed with the hub of the wheel.
  • the locking lever includes a lever body, one end of the lever body is provided with a circular arc section to form the locking head, the unlocking head is provided at the other end of the lever body, and the arc and width of the circular arc section are
  • the inner ring groove is matched; the bottom of the shaft box body is provided with a matching hole corresponding to the sliding groove, the rod body is sequentially penetrated from the sliding groove and the matching hole, and a spring is provided on the rod body On the bearing platform, a locking spring is sleeved on the rod body between the spring bearing platform and the shaft box body.
  • the sliding groove and the fitting hole are square, and the width is equal to the width of the rod body.
  • the arc segment is a third arc; the unlocking head is a T-shaped lock.
  • the bearing assembly includes a bearing, a bearing retaining ring and a sealing ring, the bearing retaining ring is provided at both ends of the bearing, and the bearing retaining ring and the bearing are provided with the bearing between the two ends, respectively.
  • a seal ring, and one end of the bearing assembly abuts against the annular positioning boss; the bearing outer sleeve is provided with a limit stop ring at the outer end of the press-fitting working surface.
  • the inner ring groove includes two, and the distance between the two inner ring grooves is equal to half of the required variable gauge.
  • An embodiment of the present application further provides a variable gauge wheelset including a wheel and an axle, and the above-mentioned locking mechanism.
  • the locking mechanisms are respectively press-fitted on the outer periphery of the hub of the wheel, and the axles are located at both ends of the axle.
  • the locking mechanism is configured to drive the wheel to move or lock in the axial direction of the axle box body, so as to achieve wheel gauge change.
  • a wheelset for a variable-gauge bogie of a rail vehicle includes a wheel, an axle, and a locking component; a hub of the wheel is located outside the wheel, and a connecting sleeve is extended to set the locking component to an extension
  • the wheel directly drives the wheel to move or lock, which is easy to operate, easy to adjust, and has a small improvement on the wheel.
  • the locking components are located on the outside of the wheel, and the axle on the inner part of the wheel is consistent with the traditional axle.
  • the motors, gearboxes and other components installed on the inner shaft of the wheel have sufficient design space, on the other hand, they can be consistent with the interfaces of the existing car, which facilitates the mass modification of existing cars;
  • An inner spline is provided on the inner periphery of the hub of the wheel and / or the inner periphery of the connecting sleeve, and outer splines matching the inner spline are provided on both ends of the axle, respectively.
  • the axle is connected with the outer spline through the inner spline, so that the torque is evenly distributed on the inner periphery of the wheel, which is convenient for transmitting torque and for the wheel to slide along the axle to achieve variable gauge;
  • the locking components are respectively press-fitted on the outer periphery of the connecting sleeve of the wheel, and are located in the axle boxes at both ends of the axle.
  • the locking components are configured to drive the wheel along the axis of the axle box. Move or lock to achieve the wheel gauge change, to meet the needs of different gauge changes.
  • FIG. 1 is a schematic axial sectional view of a wheel set for a rail vehicle variable gauge bogie of the present application
  • FIG. 2 is a partially enlarged view of A in FIG. 1; FIG.
  • FIG. 3 is a schematic structural diagram of a bearing housing in the present application.
  • FIG. 4 is a schematic structural diagram of a locking lever in the present application.
  • connection should be understood in a broad sense, unless explicitly stated and limited otherwise.
  • they may be fixed connections or removable.
  • Connection, or integral connection it can be mechanical or electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements.
  • connection or integral connection; it can be mechanical or electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements.
  • a wheelset for a variable-gage bogie of a rail vehicle includes a wheel 1, an axle 2, and a locking component; a hub of the wheel 1 is located on the wheel A connecting sleeve 11 extends outward from the outer side of 1.
  • the connecting sleeve 11 and the hub of the wheel 1 can be integrally formed to form an elongated hub.
  • the locking component is used to directly drive the wheel 1 to move or lock.
  • the inner periphery of the hub of the wheel 1 and / or the inner periphery of the connecting sleeve 11 is provided with an internal spline, that is, it can be set only in the inner periphery of the hub of the wheel 1.
  • the spline or the inner spline may be provided only on the inner periphery of the connecting sleeve 11, or the inner spline may be provided on the inner periphery of the hub of the wheel 1 and the inner periphery of the connecting sleeve 11 at the same time.
  • the inner spline may be provided on the wheel.
  • the inner periphery of the hub 1 and the inner periphery of the connecting sleeve 11 are provided with internal splines that pass through both.
  • the two ends of the axle 2 are respectively provided with external splines that match the internal splines.
  • the wheels 1 and 1 The axle 2 is connected to the outer spline through the inner spline, and is configured to The rotation torque of the axle 2 is transmitted to the wheels 1 on both sides, which also facilitates the sliding of the wheel 1 along the axle 2.
  • an external spline is provided on the wheel mount, and the length of the wheel mount is greater than the length of the extended hub, which is lengthened.
  • the distance is equal to half of the variable gauge; the locking components are respectively press-fitted on the outer periphery of the connecting sleeve 11 of the wheel 1 and located in the axle box 3 at both ends of the axle 2, and the locking components are respectively provided on the wheels
  • the axle 2 on the inner part of the wheel 1 is consistent with the conventional axle 2.
  • the aspect can be consistent with the interface of the existing car to facilitate the mass modification of the existing car.
  • the locking assembly is configured to drive the wheel 1 to move or lock along the axial direction of the axle box 3 to realize the wheel 1 Change the gauge to meet different gauge changing needs.
  • the locking assembly includes a bearing assembly 5, a bearing housing 4, and a locking rod 6.
  • the inner periphery of the bearing housing 4 is provided with an annular positioning boss 41, and the annular positioning boss 41 covers the bearing housing.
  • the inner peripheral surface of 4 is divided into a press-fitting working surface and a locking working surface; the inner ring of the bearing assembly 5 is press-fitted on the outer periphery of the connection sleeve 11, and the outer ring of the bearing assembly 5 is press-fitted on the bearing
  • the press-fitting working surface of the outer casing 4, the bearing outer casing 4 and the shaft case 3 are clearance fit, so that the connection sleeve 11, the bearing assembly 5 and the bearing outer casing 4 of the wheel 1 are fastened together, and the whole can be relative to the shaft. Box 3 moves;
  • the locking working surface is provided with a plurality of inner ring grooves 42 spaced along the axial direction thereof, and a sliding groove 43 axially penetrating the plurality of inner ring grooves 42 is provided.
  • the box 3 is used to lock the wheel 1 so that it does not move axially relative to the axle box 3.
  • the wheel 1 remains in the locked state until the gauge changes, and the unlocking head extends out of the sliding groove 43.
  • the unlocking head moves upward under the action of the upward force of the external force, so that the locking head leaves the inner ring groove 42 where it is located, at this time, an outward or inward thrust is applied to the wheel 1 , So that the wheel 1, the bearing assembly 5, and the bearing housing 4 move inward or outward as a whole.
  • the sliding groove 43 and the matching hole move relative to the locking rod 6 until reaching the other inner ring groove 42, The external force is withdrawn, the locking head is lowered, and it is locked into the corresponding inner ring groove 42 to achieve locking, which ensures that the locking head is in multiple positions. 42 switching between said inner ring groove, the wheel 1 to complete the track gauge change, simple structure, convenient operation.
  • the locking rod 6 includes a rod body 61, and one end of the rod body 61 is provided with a circular arc segment to form the locking head, and the circular arc segment may be a third circular arc to facilitate the inner ring.
  • the inner surface of the groove 42 is perfectly matched.
  • the arc segment is located in the bearing housing 4 and its arc and width match the inner ring groove 42.
  • the unlocking head is provided at the other end of the rod body 61.
  • the rod body 61 is sequentially penetrated from the sliding groove 43 and the matching hole.
  • the rod body 61 is provided with a spring bearing 62, and the rod body 61 is sleeved between the spring bearing 62 and the shaft box 3.
  • a lock spring 63 is provided.
  • One end of the lock spring 63 is in contact with the lower end of the shaft case 3 and the other end is in contact with the upper surface of the spring bearing 62.
  • the lock spring 63 is in a natural state. In the pre-compressed state, the locking head is locked in the corresponding inner ring groove 42 by the spring force.
  • the unlocking head receives an upward force. At this time, the lever 61 compresses the locking spring 63 and rises.
  • the bearing assembly 5 includes a double-row tapered roller bearing, a bearing retaining ring and a seal ring.
  • the two ends of the double-row tapered roller bearing are respectively provided with the bearing retaining ring.
  • the double-row tapered roller bearing is provided with the seal ring between both ends to realize bearing sealing, and one end of the bearing assembly 5 abuts against the annular positioning boss 41 to realize bearing positioning.
  • the sealing method of the sealing ring is a curved road seal.
  • the curved road seal is also called a labyrinth seal. It is achieved by setting a labyrinth-like small gap-a tortuous air path; the inner seal of the shaft box 3: the inner ring of the bearing is fixed to the wheel 1.
  • the outer bearing ring of the bearing On the axle mating surface, the outer bearing ring of the bearing is fixed on the bearing outer sleeve 4, and a tortuous road seal is provided between the inner and outer bearing rings of the bearing; the outer seal of the axle box: the inner ring of the bearing and the outer bearing ring 4 are provided with a tortuous road seal. Pure labyrinth seals are not provided with rubber seals. If the seal requirements are not met, a corresponding rubber seal may be provided in the gap.
  • the bearing housing 4 is provided with a limiting retaining ring at the outer end of the press-fitting working surface, so as to ensure the limit position between the bearing housing 4 and the shaft housing 3 and prevent the bearing housing 4 and the shaft housing 3 directly. Hard contact protects the bearing housing 4 and the shaft case 3.
  • the inner ring groove 42 may include two, and the distance between the two inner ring grooves 42 is equal to Need to change half of the gauge, the structure is simple, and the change of gauge is easy to implement.
  • the unlocking head may be a T-shaped lock, and the T-shaped lock may be provided with inclined inclined guide slopes on both sides of the central axis of the T-lock, which is convenient for unlocking.
  • the sliding groove 43 and the mating hole are both square, and its width is equal to the width of the rod body 61, so that the rod body 61 can only move along the length direction of the sliding groove 43 and the mating hole, and there is no movement in the width direction. Therefore, it is ensured that the wheel 1 and the axle box 3 do not shake laterally after being unlocked and locked; the length of the sliding groove 43 and the matching hole is equal to half of the changed gauge and the thickness of the two locking rods 6.
  • a thicker axle box bearing surface is provided at the bottom of the axle box body 3.
  • An embodiment of the present application further provides a rail vehicle variable gauge bogie, which includes a frame on which two sets of the above-mentioned rail vehicle variable gauge bogie wheel pairs are installed, so as to implement the bogie variable gauge. .
  • the working principle and operation process of this application are as follows: The vehicle realizes the gauge change when the running speed is not greater than 15km / h, taking the gauge from 1435mm to 1520mm as an example.
  • the wheel 1 does not bear any load during the gauge change.
  • This function is realized by supporting the bearing surface of the axle box body 3 on the axle box supporting rail of the ground changing device.
  • the axle box support rail uses a roller support structure to reduce the abrasion of the axle box bearing surface.
  • the unlocking rail is a rising rail surface structure. During the unlocking process, the lifting amount can be 35mm, which means that during this process, the load of wheel 1 It is assumed by the axle box 3.
  • the unloading process of the wheel 1 is realized in a continuous and stable manner, and the standard rail is lowered before it is interrupted. At the same time, the load of the wheel 1 is borne by the axle box 3.
  • the T-shaped unlocking head at the lower end of the locking assembly cooperates with the corresponding unlocking rail with a rising slope, so that the locking lever 6 compresses the locking spring 63 to move upward to realize the wheel 1 and the axle 2 Unlocked.
  • the lateral degree of freedom of the wheel 1 is released, and the wheel 1 is forced to move to a new gauge in the corresponding sliding centering rail.
  • the bearing assembly 5 pressed on the wheel 1 and the bearing jacket pressed on the bearing outer ring 4 As the wheel 1 moves laterally together under the action of the sliding center rail to adapt to the new gauge.
  • the present application has a simple structure, a clever design, and convenient operation. It can safely and reliably implement the variable gauge, and ensure the original arrangement of the high-speed EMU bogie components to the greatest extent, in order to improve the change of rail vehicles. Versatility and reliability of gauge bogies.
  • the embodiment of the present application also provides a locking mechanism for a variable gauge wheelset, as shown in FIG. 1-2, which mainly includes a bearing housing 4, a locking rod 6, a bearing assembly 5, and a connection sleeve 11, as shown in FIG.
  • the inner circumference of the bearing housing 4 is provided with an annular positioning boss 41, which separates the inner peripheral surface of the bearing housing 4 into a press-fitting working surface 45 and a locking working surface 44. ;
  • the inner ring of the bearing assembly 5 is press-fitted on the outer periphery of the connection sleeve 11, the outer ring of the bearing assembly 5 is press-fitted on the press-fitting working surface 45, and the connection sleeve 11 is configured to be in contact with the wheel 1.
  • the outer side of the wheel hub is fixedly connected, so that the locking mechanism is connected to the wheel 1.
  • the locking working surface 44 is provided with a plurality of inner ring grooves 42 spaced along its axial direction, and is provided with a plurality of axially penetrating through the inner ring grooves 42. As shown in FIG.
  • the sliding groove 43 includes a locking head 64 and an unlocking head 65, and the locking head 64 is configured to be locked into the inner ring groove 42 to achieve locking;
  • the unlocking head 65 extends out of the sliding groove 43 and can cause the locking head 64 to leave the inner ring groove 42 under the action of the external force to achieve unlocking; specifically, the wheel 1 remains until the gauge changes.
  • the unlocking head 65 extends out of the sliding groove 43.
  • the unlocking head 65 moves upward under the upward force of the external force, so that the locking head 64 leaves the inner ring groove where it is located. 42.
  • the locking mechanism is mounted on the axle 2 on the outside of the wheel 1 through the connection sleeve 11 and is located in the axle box 3 at both ends of the axle 2; the bearing jacket 4 and the axle box
  • the body 3 is clearance-fitted, so that the wheel 1, the connecting sleeve 11, the bearing assembly 5 and the bearing housing 4 are fastened together, and the whole can move relative to the axle box body 3.
  • the connecting sleeve 11 is integrally formed with the hub of the wheel 1 to form an elongated hub.
  • An inner spline is provided on the inner periphery of the wheel 1 and / or the inner periphery of the connecting sleeve 11, that is, an inner spline may be provided only on the inner periphery of the hub of the wheel 1 or an inner spline may be provided only on the inner periphery of the connecting sleeve 11.
  • An inner spline may also be provided on the inner periphery of the hub of the wheel 1 and the inner periphery of the connecting sleeve 11 at the same time. In this embodiment, for the convenience of setting, the inner periphery of the wheel 1 and the inner periphery of the connecting sleeve 11 may be provided through at the same time.
  • axle 2 For both internal splines, two ends of the axle 2 are provided with external splines that match the internal splines, and the wheel 1 and the axle 2 are connected to the external splines through the internal splines. Is configured to transmit the rotation torque of the axle 2 to the wheels 1 on both sides, which also facilitates the sliding of the wheel 1 along the axle 2.
  • an external spline is provided on the wheel 1 mount, and the length of the wheel 1 mount Longer than the length of the wheel hub, the lengthened distance is equal to half of the track change; the locking components are respectively press-fitted on the outer periphery of the connecting sleeve 11 of the wheel 1, and are located in the axle box 3 at both ends of the axle 2; The locking components are respectively provided in the outer shaft case 3 of the wheel 1, and the axle 2 and the transmission of the inner part of the wheel 1 The same axle 2 is kept consistent. On the one hand, there is sufficient design space for the motor, gear box and other components installed on the axle 2 on the inner side of the wheel 1.
  • the locking component is configured to drive the wheel 1 to move or lock along the axial direction of the axle box body 3 so as to change the track gauge of the wheel 1 to meet different track gauge changing requirements.
  • the locking lever 6 includes a lever body 61, and one end of the lever body 61 is provided with a circular arc segment to form the locking head 64.
  • the circular arc segment may be a third arc, and the arc The segment is located in the bearing housing 4 and its arc and width match the inner ring groove 42 so as to perfectly match the inner surface of the inner ring groove 42.
  • the unlocking head 65 is provided at the other end of the rod body 61.
  • the arc and width of the arc segment are matched with the inner ring groove 42; the bottom of the shaft box body 3 is provided with a matching hole corresponding to the sliding groove 43, and the rod body 61 slides from the sliding hole The slot 43 and the matching hole pass through in sequence.
  • the lever body 61 is provided with a spring bearing 62, and the lever body 61 is sleeved with a locking spring 63 between the spring bearing 62 and the shaft case 3.
  • One end of the lock spring 63 abuts against the lower end of the shaft case 3, and the other end abuts against the upper surface of the spring bearing base 62.
  • the sliding groove 43 and the mating hole are square, and its width is equal to the width of the rod body 61, so that the rod body 61 can only move along the length direction of the sliding groove 43 and the mating hole, without moving in the width direction. Therefore, it is ensured that the wheel 1 and the axle box body 3 do not shake laterally after being unlocked and locked.
  • the length of the sliding groove 43 and the matching hole is equal to half of the changed gauge distance plus the thickness of the two locking rods 6.
  • a thicker axle box bearing surface is provided at the bottom of the axle box body 3.
  • the unlocking head 65 is configured as a T-shaped lock, and the T-shaped lock can also be provided with inclined inclined guide slopes on both sides of its central axis, which is convenient for unlocking.
  • the bearing assembly 5 includes a bearing which may be a double-row tapered roller bearing, a bearing retainer ring and a seal ring.
  • the bearing retainer rings are respectively provided at both ends of the bearing, and the bearing retainer ring and the bearing
  • the sealing ring is provided between the two ends, and one end of the bearing assembly 5 abuts the annular positioning boss 41.
  • the sealing method of the sealing ring adopts a curved path seal, and the curved path seal also It is called labyrinth seal, which is achieved by setting a labyrinth-like small gap-tortuous air path; the inside of the shaft box 3 is sealed: the bearing inner ring is fixed on the wheel 1 wheel shaft mating surface, and the bearing outer ring is fixed on the bearing shell 4.
  • a curved path seal is provided between the inner and outer bearing rings of the bearing; an outer seal of the axle box: a curved path seal is provided for the inner ring of the bearing and the bearing shell 4. Pure labyrinth seals are not provided with rubber seals. If the seal requirements are not met, a corresponding rubber seal may be provided in the gap.
  • the bearing housing 4 is provided with a limiting retaining ring at the outer end of the press-fitting working surface 45, so as to ensure the limit between the bearing housing 4 and the shaft housing 3, and prevent the bearing housing 4 and the shaft housing 3 from directly and rigidly contacting each other. , Protect the bearing jacket 4 and the shaft case 3.
  • the inner ring groove 42 in order to ensure that the bearing housing 4 and the shaft housing 3 have appropriate lengths, the inner ring groove 42 includes two, and the distance between the two inner ring grooves 42 is equal to the required variable gauge.
  • the structure is simple and the track gauge can be changed easily.
  • more than two inner ring grooves 42 can be provided as required.
  • the present application also provides a variable gauge wheelset, which includes a wheel 1, an axle 2, and the above-mentioned locking mechanism, and the locking mechanisms are press-fitted on the wheels 1, respectively.
  • the outer periphery of the wheel hub is located in the axle box 3 at both ends of the axle 2, and the locking mechanism is configured to drive the wheel 1 to move or lock in the axial direction of the axle box 3 so as to realize the transformation of the wheel 1 gauge.
  • the working principle and operation process of this application are as follows: The vehicle realizes the gauge change when the running speed is not greater than 15km / h, taking the gauge from 1435mm to 1520mm as an example.
  • the wheel 1 does not bear any load during the gauge change.
  • This function is realized by supporting the bearing surface of the axle box body 3 on the axle box supporting rail of the ground changing device.
  • the axle box support rail uses a roller support structure to reduce the abrasion of the axle box bearing surface.
  • the unlocking rail is a rising rail surface structure. During the unlocking process, the lifting amount can be 35mm, which means that during this process, the load of wheel 1 It is assumed by the axle box 3.
  • the unloading process of the wheel 1 is realized in a continuous and stable manner, and the standard rail is lowered before it is interrupted. At the same time, the load of the wheel 1 is borne by the axle box 3.
  • the T-shaped unlocking head 65 at the lower end of the locking assembly cooperates with the corresponding unlocking rail with a rising slope, so that the locking lever 6 compresses the locking spring 63 to move upward to realize the wheel 1 and the axle. 2 unlocked.
  • the lateral degree of freedom of the wheel 1 is released, and the wheel 1 is forced to move to a new gauge in the corresponding sliding centering rail.
  • the bearing assembly 5 pressed on the wheel 1 and the bearing jacket pressed on the bearing outer ring 4 As the wheel 1 moves laterally together under the action of the sliding center rail to adapt to the new gauge.
  • the locking mechanism of the present application can reliably achieve locking and unlocking, thereby ensuring that the variable gauge wheel pair using the locking mechanism is convenient to operate and can conveniently and reliably implement the variable gauge of the train.

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  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

La présente invention concerne un essieu monté pour un bogie à calibre variable d'un véhicule ferroviaire, comprenant des roues (1), un essieu (2) et des ensembles de blocage. Le moyeu de chaque roue s'étend vers l'extérieur de la roue pour former un manchon de raccordement (11) ; une cannelure interne est disposée sur la circonférence interne du moyeu de la roue et/ou sur la circonférence interne du manchon de raccordement ; les deux extrémités de l'essieu sont respectivement pourvues de cannelures externes correspondant aux cannelures internes ; les roues et l'essieu sont reliés au moyen des cannelures internes et des cannelures externes ; les ensembles de blocage sont respectivement ajustés par pression sur les circonférences extérieures des manchons de raccordement des roues et sont situés dans des boîtes d'essieu (3) sur les deux extrémités de l'essieu ; les ensembles de blocage sont conçus pour entraîner les roues pour les déplacer le long de la direction axiale des boîtes d'essieu ou pour bloquer les roues, ce qui permet d'effectuer le changement de calibre des roues. La présente invention concerne également un bogie à calibre variable pour un véhicule ferroviaire, et un mécanisme de blocage pour l'essieu monté à calibre variable. De telles configurations peuvent garantir, au plus haut degré, l'agencement original de pièces et composants d'un bogie pour une unité-multiple électrique à grande vitesse, ce qui permet d'améliorer l'universalité et la fiabilité d'un bogie à calibre variable d'un véhicule ferroviaire.
PCT/CN2019/079051 2018-07-05 2019-03-21 Essieu monté pour bogie à calibre variable de véhicule ferroviaire et bogie WO2020007071A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201810732522.9 2018-07-05
CN201810732191.9A CN108909360B (zh) 2018-07-05 2018-07-05 一种用于变轨距轮对的锁紧机构及变轨距轮对
CN201810732522.9A CN108909762B (zh) 2018-07-05 2018-07-05 一种轨道车辆变轨距转向架用轮对及转向架
CN201810732191.9 2018-07-05

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WO2020007071A1 true WO2020007071A1 (fr) 2020-01-09

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Citations (8)

* Cited by examiner, † Cited by third party
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CN1143584A (zh) * 1995-06-06 1997-02-26 日本铁道建设公团 铁路车辆可变轮距转向架
WO2000063056A1 (fr) * 1999-04-19 2000-10-26 Nikola Martinov Gaydarov Essieu monte pour ecartements multiples
EP1340664B1 (fr) * 2002-02-27 2007-06-06 Siemens Aktiengesellschaft Train de roulement à écartement variable pour véhicules ferroviaires (mot clef : guidage à bras oscillant)
CN103192843A (zh) * 2013-04-19 2013-07-10 西南交通大学 用于变轨距转向架的锁紧机构
CN107521519A (zh) * 2017-09-01 2017-12-29 西南交通大学 一种变轨距转向架
CN107571886A (zh) * 2017-09-01 2018-01-12 西南交通大学 一种应用于变轨距转向架的锁紧组件
CN108909360A (zh) * 2018-07-05 2018-11-30 中车青岛四方机车车辆股份有限公司 一种用于变轨距轮对的锁紧机构及变轨距轮对
CN108909762A (zh) * 2018-07-05 2018-11-30 中车青岛四方机车车辆股份有限公司 一种轨道车辆变轨距转向架用轮对及转向架

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1143584A (zh) * 1995-06-06 1997-02-26 日本铁道建设公团 铁路车辆可变轮距转向架
WO2000063056A1 (fr) * 1999-04-19 2000-10-26 Nikola Martinov Gaydarov Essieu monte pour ecartements multiples
EP1340664B1 (fr) * 2002-02-27 2007-06-06 Siemens Aktiengesellschaft Train de roulement à écartement variable pour véhicules ferroviaires (mot clef : guidage à bras oscillant)
CN103192843A (zh) * 2013-04-19 2013-07-10 西南交通大学 用于变轨距转向架的锁紧机构
CN107521519A (zh) * 2017-09-01 2017-12-29 西南交通大学 一种变轨距转向架
CN107571886A (zh) * 2017-09-01 2018-01-12 西南交通大学 一种应用于变轨距转向架的锁紧组件
CN108909360A (zh) * 2018-07-05 2018-11-30 中车青岛四方机车车辆股份有限公司 一种用于变轨距轮对的锁紧机构及变轨距轮对
CN108909762A (zh) * 2018-07-05 2018-11-30 中车青岛四方机车车辆股份有限公司 一种轨道车辆变轨距转向架用轮对及转向架

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