JP7036932B2 - High-speed train variable gauge trolley for track vehicles - Google Patents

Description

[Cross-reference]
The present application cites a Chinese patent application submitted on April 13, 2018, in which the title of the invention is "high-speed train variable gauge for track vehicles" and the application number is 2018103320508, the entire of which is by reference. Incorporated in this application.

Examples of the present invention relate to the technical field of track vehicle bogies, and particularly to high-speed train variable gauge bogies for track vehicles.

In order to meet the transportation requirements between different gauges in neighboring countries, it is now common practice to replace trolleys with different distances inside the wheelset at the border. The solution is costly and time consuming. Spain and Japan have invented variable-gauge bogies that can run continuously between tracks with different gauges.

In order to realize the parking brake of the train, a wheel-embedded brake disc is usually attached to the wheel, and when the train applies the brake, the brake pad of the brake caliper sandwiches the wheel-embedded brake disc to realize the brake. However, in the process of changing the train track, the wheels of the same wheel set move relatively, and the position between the wheel-embedded brake disc and the brake caliper changes. Unable to meet the braking requirements of the variable wheel set.

The embodiments of the present invention aim to solve at least one of the technical problems existing in the prior art or the related art.

An object of the embodiment of the present invention is a track capable of satisfying parking brakes in different gauges of a variable gauge wheel set, improving the operation efficiency of the variable gauge wheel set in different tracks, and ensuring the safety of vehicle operation. It is to provide a high-speed train variable gauge trolley for vehicles.

In order to solve the above technical problems, an embodiment of the present invention provides a high-speed train track variable trolley for a track vehicle, and the high-speed train track variable trolley for the track vehicle includes a frame, and the frames are parallel to each other. A pair of installed side beams and a pair of parallel cross beams connected between the pair of side beams are provided, and a variable-gauge wheel is provided outside the pair of cross beams. Each set is provided, a wheel-embedded brake disc is attached to the wheel of the variable track wheel set, a mounting seat and brake caliper are attached to the side beam or cross beam, and the brake caliper is attached via a support pin. The support pin is horizontally provided below the mounting sheet, both ends of which are fixed and connected to the mounting sheet, and a connecting sleeve is provided at one end of the brake caliper. A damping inner sleeve having an elastic damping property is fastened and fitted in the connecting sleeve, and the connecting sleeve is locked to the support pin via the damping inner sleeve, and when the track of the wheel is changed, the wheel in the wheel. The embedded brake disc applies a pushing force to the brake caliper, and when the pushing force received by the connecting sleeve becomes larger than the damping force between the connecting sleeve and the support pin, the connecting sleeve interlocks the brake caliper. It is moved along the support pin.

Among them, the length of the connection sleeve is shorter than the length of the support pin, both ends of the connection sleeve and the corresponding ends of the support pin are connected by corrugated tubes, and between the connection sleeve and the bottom surface of the mounting sheet. Is provided with a gap.

Among them, the damping inner sleeve includes a first damping inner sleeve and a second damping inner sleeve, and the first damping inner sleeve and the second damping inner sleeve are installed at intervals, and the first damping inner sleeve is provided. A spherical bearing is fixedly fitted to the support pin between the damping inner sleeve 1 and the second damping inner sleeve, and the space between the spherical bearing and the connecting sleeve is positioned by a bearing seat. Is press-fitted into the inner surface of the connection sleeve.

Two of the support pins are provided in parallel below the mounting sheet, which are the first support pin and the second support pin, respectively, and the first support pin is on the outside of the mounting sheet. Positioned, the second support pin is located inside the mounting seat, corresponding to which one end of the brake caliper is provided with two connecting sleeves connected in parallel, each of which is a first connection. A sleeve and a second connecting sleeve, wherein the first connecting sleeve is connected to a first support pin and the second connecting sleeve is connected to a second support pin.

Among them, connection ends extending downward are provided on both sides of the mounting sheet facing each other along the axial direction of the variable gauge wheel set, and the support pins are fixedly connected to the connection ends.

Among them, the side beam or the cross beam is provided with a brake hanger, and the mounting sheet is attached to the brake hanger.

Among them, the variable-gauge wheel set includes an axle, wheels, and a locking mechanism, and axle boxes are provided at both ends of the pair of side beams, and both ends of the axle extend into the axle box. The wheels are attached to the axles and connected to the axles via splines, the locking mechanisms are each provided on the outside of the wheels and located in the axle box body, the locking mechanism. Is connected to the wheel and is used to lock and unlock the wheel to achieve a change in wheel axle.

Among them, the lock mechanism includes an inner sleeve, a rolling bearing, an outer sleeve, and a lock pin.

The inner sleeve, the rolling bearing, and the outer sleeve are firmly fitted in order from the inside to the outside, the inner sleeve is gap-fitted to the axle, and one end of the inner sleeve facing the wheel is the axle box. Extending from the body and fastened and connected to the wheel, the outer sleeve is crevice-fitted to the inner surface of the axle box and on opposite sides of the outer side of the outer sleeve, respectively, in the axial direction of the outer sleeve. A boss extending along the boss is provided, a plurality of concave grooves are provided at intervals along the longitudinal direction of the boss, and a concave arc surface having a one-to-one correspondence with the concave groove is provided on the inner wall of the axle box body. Provided, the lock pin is intended to be inserted into a lock space limited by the concave groove and the concave arc surface, and the plurality of said lock pins under the action of an external force so as to realize a change in the track of the wheel. You can switch between lock spaces.

Among them, the lock pin includes a pin body, an opening groove is provided on one side of the pin body, the opening groove penetrates along the radial direction of the pin body, and the opening groove is inside the opening groove. At least one lug extending along the axial direction of the pin body is provided, the upper end of the lug is connected to the groove top of the opening groove, and a notch is formed between the lower end of the lug and the groove bottom of the opening groove. Provided, the lug is for insertion into the recess.

Among them, the pin body is attached to the axle box body by a return spring, the upper end of the pin body is connected to the return spring, and the lower end of the pin body extends from the bottom surface of the axle box body.

Among them, the axle box body is provided with a gauge change process detection / early warning unit.

Among them, the axle is installed as a stepped shaft having an intermediate diameter larger than the diameter at both ends, and the wheels are provided on the intermediate shaft of the stepped shaft and are provided at both ends of the intermediate shaft, respectively, and the locking mechanism is provided. It is provided on both ends of the stepped shaft.

An inner spline is provided on the inner circumference of the wheel, an outer spline is provided at both ends of the intermediate shaft of the stepped shaft, and both ends of the wheel and the intermediate shaft are fitted via the inner spline and the outer spline. Is connected.

At both ends of the intermediate shaft, a three-step stepped shaft is configured, respectively, and the three-step stepped shaft has a first flange and a second flange whose diameters increase from the outside to the inside. And a third flange, the outer spline is provided on the outer periphery of the second flange, the center hole of the wheel is configured as a three-step stepped hole, and the three-step stepped hole is from the outside. It is provided with a first connection hole, a second connection hole, and a third connection hole whose diameters increase inward, and the inner spline is provided in the circumferential direction of the inner wall of the second connection hole. The first connection hole is fitted to the first flange, the inner spline is fitted and connected to the outer spline, and the third connection hole is fitted to the third flange. ..

Compared with the prior art, the proposed technical proposal has the following advantages.

Embodiments of the present invention provide a high-speed train variable gauge bogie for track vehicles, improve the suspension system of the brake caliper based on the existing bogie, and connect the brake caliper to the mounting seat via a support pin. The method is adopted. The support pins are horizontally provided below the mounting seat, both ends of which are fixedly connected to the mounting seat, a connecting sleeve is provided at one end of the brake caliper, and elastic damping is provided in the connecting sleeve. A damping inner sleeve with properties is fastened and fitted, the connecting sleeve is locked to the support pin via the damping inner sleeve, and when changing the wheel track, the wheel-embedded brake disc in the wheel is a brake caliper. When the pushing force received by the connecting sleeve becomes larger than the damping force between the connecting sleeve and the support pin, the connecting sleeve moves along the support pin in conjunction with the brake caliper. .. When the gauge conversion of the wheel set is completed, the brake caliper also reaches the corresponding position. As a result, it is possible to satisfy the parking brakes of the variable gauge trolleys in different gauges, improve the operation efficiency of the variable gauge trolleys in different gauges, and ensure the safety of vehicle operation. By providing a wheel-embedded brake disc and a corresponding brake caliper, for example, a traction motor corresponding to a transmission drive device, a coupling, a related member such as a gear box, or a truss mission case thereof, etc., can be used at high speed. Sufficient space can be secured for installing the drive device required for the train bogie.

In the embodiment of the present invention, the locking mechanism is provided on the outside of the wheel, and the axle of the inner part of the wheel matches the conventional axle. On the other hand, the motor and the gear box attached to the axle inside the wheel. It has ample design space for components such as the body, while maintaining consistency with existing car interfaces and facilitating batch modifications to existing cars. In addition, by connecting the wheels and axles via splines, torque is evenly distributed on the inner circumference of the wheels, torque is easily transmitted, and the wheels slide along the axles to change the gauge. Easy to realize.

Then, both ends of the intermediate shaft of the axle are installed as three-stage stepped shafts, the outer spline is installed in the middle section of the three-stage stepped shaft, and the center hole of the wheel is further installed as a three-stage stepped hole. By installing the inner spline in the middle section of the three-stage stepped hole, a "flange + spline + flange" mating connection form is formed as a whole, and the radial load is provided by the flanges at both ends of the outer spline. By receiving and transmitting torque by fitting the inner and outer splines, it is possible to realize the separation of the functions of receiving the load in the radial direction and transmitting the torque, and improve the reliability of the structure of the variable track wheel set.

It is a perspective schematic diagram of the high-speed train variable gauge trolley for a track vehicle which concerns on embodiment of this invention. It is a perspective schematic diagram of the brake part in FIG. FIG. 3 is an axial sectional view of a first support pin in a high-speed train variable gauge trolley for a track vehicle according to a first embodiment of the present invention. FIG. 3 is an axial sectional view of a second support pin in a high-speed train variable gauge trolley for a track vehicle according to a second embodiment of the present invention. It is a partial schematic diagram of a high-speed train variable gauge trolley for a track vehicle according to an embodiment of the present invention. It is a schematic diagram in which the brake caliper in the high-speed train variable gauge bogie for the track vehicle which concerns on embodiment of this invention is attached to the variable gauge wheel set. FIG. 6 is a schematic perspective view of the outer sleeve in FIG. FIG. 6 is a schematic perspective view of a lock pin in FIG.

Hereinafter, specific embodiments of the present disclosure will be described in detail with reference to the drawings and examples. The following examples are for illustration purposes only and are not intended to limit the scope of this publication.

In the description of the embodiments of the present invention, "center", "vertical direction", "horizontal direction", "top", "bottom", "front", "rear", "left", "right", "vertical" , "Horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or positional relationship, which is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is the orientation or positional relationship of the present invention. It is merely a convenient or brief description of the implementation and is not an explicit or implied statement that the indicated device or element is always in a particular orientation and is configured and operated in a particular orientation. It should not be understood as a limitation to the embodiments of the present invention. It should be noted that terms such as "first", "second", and "third" are for illustration purposes only and should not be understood to express or imply relative importance.

Unless expressly specified and limited in the description of the present invention, the meanings of the terms "attachment", "connecting to each other", and "connecting" should be broadly understood. For example, it can be a fixed connection, a detachable connection, or an integrated connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection to each other via an intermediate medium. It is also possible to connect or communicate inside the two elements. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present invention depending on the specific circumstances.

In the description of the embodiments of the present invention, unless otherwise specified, "plurality", "plurality", and "plurality" mean two or two or more.

Hereinafter, embodiments of the present invention will be specifically described with reference to two examples, but the specific contents of the present invention are not limited.

[Example 1]
As shown in FIG. 1, the high-speed train gauge variable trolley for a track vehicle according to an embodiment of the present invention includes a frame, a pair of side beams 20 in which the frames are installed in parallel, and a pair of the sides. A pair of parallel cross beams connected between the beams 20 is provided, and a variable gauge wheel set is provided outside the pair of the cross beams, respectively, and the wheels 10 of the variable gauge wheel set are provided. A wheel-embedded brake disc 100 is attached to the wheel, and specifically, as shown in FIG. 6, the wheel-embedded brake disc 100 is attached to both the inside and outside of the wheel 10 and via a connector. Connected as one. As shown in FIG. 5, the mounting sheet 2 and the brake caliper 1 may be attached to the side beam 20, and of course, the mounting sheet 2 may be attached to the cross beam. As shown in FIG. 2-3, the brake caliper 1 is connected to the mounting sheet 2 via the support pin 3, and specifically, the support pin 3 is provided horizontally below the mounting sheet 2. Both ends thereof are fixedly connected to the mounting seat 2, a connecting sleeve is provided at one end of the brake caliper 1, and a damping inner sleeve 4 having elastic damping property is fastened and fitted in the connecting sleeve. ing. The damping inner sleeve 4 may be made of stable rubber. The connection sleeve is locked to the support pin 3 via the damping inner sleeve 4 so that the positions of the brake caliper 1 and the mounting seat 2 do not change when the variable gauge wheel set operates normally. A concave groove 32 is provided inside the damping inner sleeve 4 in contact with the support pin 3, and the size of the concave groove 32 is set according to the required damping force. Therefore, the damping force is determined. It can be adjusted according to the actual needs. When the wheel 10 moves by receiving an inward or outward pushing force at the time of changing the gauge, the wheel 10 applies a pushing force to the brake caliper 1, and the pushing force received by the connecting sleeve is the connecting sleeve and the supporting. When it becomes larger than the damping force between the pin 3 and the pin 3, the connecting sleeve moves the brake caliper 1 in conjunction with the support pin 3. When the gauge conversion of the wheel set is completed, the brake caliper 1 also reaches the corresponding position and is locked again to the support pin 3 via the damping inner sleeve 4 to realize the positioning. As a result, it is possible to satisfy the parking brakes of the variable gauge trolleys in different gauges, improve the operation efficiency of the variable gauge trolleys in different gauges, and ensure the safety of vehicle operation. Further, the damping of the stabilizing rubber damps the vibration and impact during traveling of the vehicle, and the lateral positioning of the brake caliper 1 can be stabilized and highly reliable.

By providing the wheel-embedded brake disc 100, the corresponding brake caliper 1, and the mounting seat 2, for example, related members such as a traction motor, a coupling, and a gear box corresponding to the transmission drive device, or Sufficient space can be secured for installing the drive device required for the high-speed train bogie, such as the truss mission case.

In the embodiment of the present invention, in order to secure a space for the connection sleeve to move back and forth, the length of the connection sleeve is shorter than the length of the support pin 3, and both ends of the connection sleeve and the corresponding ends of the support pin 3 are provided. Are each connected by a corrugated tube 7. Since the corrugated tube 7 has sufficient elasticity and elasticity, it can be expanded and contracted with the movement of the connecting sleeve, and by providing the corrugated tube 7, it is possible to prevent dust and foreign matter from entering the connecting sleeve. Moreover, the arrangement of the corrugated tube 7 has a certain effect on the lateral positioning of the connecting sleeve. Further, when the connection sleeve moves along the support pin 3, a gap is provided between the connection sleeve and the bottom surface of the mounting sheet 2 so that the two do not interfere with each other.

However, the damping inner sleeve 4 includes a first damping inner sleeve and a second damping inner sleeve, and the first damping inner sleeve and the second damping inner sleeve are installed at intervals. A spherical bearing 5 is fixedly fitted to the support pin 3 between the first damping inner sleeve and the second damping inner sleeve, and the spherical bearing 5 and the connecting sleeve are positioned by the bearing seat 6. The outer diameter surface of the outer ring of the spherical bearing 5 is spherical and can be fitted into the corresponding concave spherical surface of the bearing seat 6 to serve as centering, the bearing seat 6 being press-fitted into the inner surface of the connection sleeve. It is fitted together to form an integral structure. By installing the spherical bearing 5, it is possible to prevent the occurrence of shaking when the connecting sleeve moves. Both ends of the spherical bearing 5 have a function of restricting the movement of the first damping inner sleeve and the second damping inner sleeve, that is, the maximum of the first damping inner sleeve and the second damping inner sleeve. The moving distance is the distance to move until it comes into contact with the spherical bearing 5. When the connecting sleeve moves, the bearing seat 6 moves along the surface of the spherical bearing 5.

Further, in order to facilitate the attachment of the support pin 3, connecting ends extending downward are provided on both sides of the attachment sheet 2 facing each other along the axial direction of the variable gauge wheel set, respectively, and the support pin 3 is provided. 3 is fixedly connected to the connection end.

In order to ensure the reliability of the connection, two support pins 3 are provided in parallel below the mounting sheet 2, and the first support pin 31 and the second support pin 32 are used, respectively. The first support pin 31 is located on the outside of the mounting sheet 2, the second support pin 32 is located on the inside of the mounting sheet 2, and correspondingly, at one end of the brake caliper 1. The two connection sleeves connected in parallel are provided, and the two connection sleeves may be integrally formed by welding, and are the first connection sleeve 11 and the second connection sleeve 12, respectively, and the first connection sleeve. The connection sleeve 11 is connected to the first support pin 31, and the second connection sleeve 12 is connected to the second support pin 32. This makes it possible to ensure that the connection sleeve is stably connected to the support pin without rotating. If the brake caliper 1 needs to move, the damping force between the first connecting sleeve 11 and the first support pin 31 and the damping force between the second connecting sleeve 12 and the second support pin 32. It is necessary to overcome the force at the same time, that is, the damping force received is relatively large.

Specifically, in the embodiment of the present invention, the brake caliper 1 includes a pair of caliper main bodies 13 installed facing each other, and the caliper main body 13 has one end connected to the connection sleeve. Brake pads 14 are provided on the inside of the other end, respectively, and the brake pads 14 are powder metallurgy brake pads 14 and have excellent wear resistance.

In the embodiment of the present invention, axle box bodies 70 are provided at both ends of the pair of side beams 20, and both ends of the axle 80 of the variable gauge wheel set extend into the axle box body 70, respectively. The axle box 70 supports and positions both ends of the axle 80. As shown in FIG. 6, the wheel 10 is attached to the axle 80 between two opposing axle box bodies 70 and is connected to the axle 80 via a spline, specifically the wheel 10. An inner spline is provided in the connection hole, an outer spline is provided in the axle 80, and the wheel 10 and the axle 80 are fitted and connected by the inner and outer splines, so that the torque equalization is uniform on the circumference of the wheel 10. The wheels 10 slide along the axle 80 and the track change is easily realized, while the torque and the weight of the entire vehicle are easily transmitted. Each of the locking mechanisms is provided on the outside of the wheel 10 and is located in the axle box 70, and it is necessary to make a slight improvement only on the axle 80 on the outside of the wheel 10, but the wheel 10 needs to be improved. The inner axle 80 coincides with the conventional axle 80. This, on the one hand, provides ample design space for members such as motors, gearboxes, etc. mounted on the axle 80 inside the wheel 10, and on the other hand maintains consistency with existing car interfaces. The locking mechanism is connected to the outside of the wheel 10 and is used to lock and unlock the wheel 10 so as to realize a change in the gear of the wheel 10. , The structure is simple and the operation is convenient.

In the embodiment of the present invention, the axle 80 is installed as a stepped shaft having an intermediate diameter larger than the diameters at both ends, and the wheel 10 is installed in the middle of the stepped shaft in order to facilitate the attachment and positioning of the locking mechanism. The locking mechanism is provided on both ends of the intermediate shaft and is provided on both ends of the intermediate shaft, and the locking mechanism is provided on both ends of the stepped shaft.

In an embodiment of the invention, as shown in FIG. 6, the locking mechanism specifically comprises an inner sleeve 60, a rolling bearing 50, an outer sleeve 30, and a lock pin 40.

The inner sleeve 60, the rolling bearing 50, and the outer sleeve 30 are sequentially and firmly sewn from the inside to the outside to form a slide unit, and both ends of the slide unit are sealed to provide lubricating oil in the rolling bearing 50. Leakage can be prevented, and external dust and other debris can be prevented from entering the slide unit. When the train is operating normally, the inner ring of the inner sleeve 60 and the rolling bearing 50 rotates with the wheel 10, the outer ring of the rolling bearing 50 and the outer sleeve 30 are kept relatively fixed, and the inner sleeve 60 is said to be the same. A gap is fitted to the axle 80, and one end of the inner sleeve 60 facing the wheel 10 extends from the axle box body 70 and is fastened and connected to the wheel 10 with a fastener such as a bolt, and the outer sleeve 30 is said. It is fitted in a gap on the inner surface of the axle box body 70, and the slide unit can slide horizontally with respect to the axle box body 70. As shown in FIG. 7, bosses 31 extending along the axial direction of the outer sleeve 30 are provided on both opposite sides of the outer side of the outer sleeve 30 at intervals along the longitudinal direction of the boss 31. A plurality of concave grooves 32 are provided, and a concave arc surface having a one-to-one correspondence with the concave groove 32 is provided on the inner wall of the axle box body 70, and the lock pin 40 has the concave groove 32 and the concave arc surface. It is intended to be inserted into the lock space limited by, and can be switched between the plurality of lock spaces under the action of an external force so as to realize a change in the gauge of the wheel 10. Specifically, when the lock pin 40 is inserted into the lock space, one portion of the lock pin 40 is located in the concave groove 32, the other portion is aligned with the concave arc surface, and the outer sleeve 30 has a shaft. The position is fixed with respect to the box body 70 and the lock is realized, and at this time, the position of the wheel 10 is fixed with respect to the axle 80. When it is necessary to change the gauge, the lock pin 40 is released from the locked space located under the action of an external force, and unlocking is realized. In this embodiment, the lock pin 40 is removed from the lock space by an upward pushing force, and at this time, the wheel 10 is pushed and moves outward or inward along the axle 80, and the slide unit is interlocked with the shaft. When moved relative to the box body 70 and the lock pin 40 and the lock space corresponding to the changed track moves beneath the lock pin 40, the lock pin 40 is under the action of its own gravity and downward force. It is inserted into the lock space, and the change of the track of the wheel 10 is completed.

Specifically, the inner sleeve 60 is externally fitted to both end shafts of the stepped shaft, both are gap-fitted, and a gauge change interval is provided between the inner sleeve 60 and the shoulder of the stepped shaft. Thus, when changing the gauge, the inner sleeve 60 is ensured to have a sufficient distance to move along the axle 80 without interfering with the axle 80, and the two adjacent recesses. The distance between 32 is equal to half the gauge of the required change, and when changing the gauge, the wheels 10 at both ends of the axle 80 move simultaneously, and the two wheels 10 each move only half the gauge of the required change. Moving, thus the total travel distance is the distance of the required change gauge, for example when changing from standard gauge to narrow gauge or wide gauge, or when changing from narrow gauge or wide gauge to standard gauge, as required. The gauge of change can be selected accordingly.

Further, outer splines are provided at both ends of the intermediate shaft of the stepped shaft, and both ends of the wheel 10 and the intermediate shaft are fitted and connected via an inner spline and an outer spline, and further, the intermediate shaft is further fitted. A three-step stepped shaft is configured at each end of the three-step stepped shaft, and the three-step stepped shaft has a first flange, a second flange, and a third flange whose diameter increases from the outside to the inside. The outer spline is provided on the outer periphery of the second flange, the central hole of the wheel 10 is configured as a three-step stepped hole, and the three-step stepped hole is from the outside to the inside. The inner spline is provided in the circumferential direction of the inner wall of the second connection hole, and is provided with a first connection hole, a second connection hole, and a third connection hole whose diameter is expanded toward the same. The first connection hole is fitted to the first flange, the inner spline and the outer spline are fitted and connected, and the third connection hole is fitted to the third flange as a whole. A form of "flange + spline + flange" fitting connection is formed, and the radial load is received by the flanges at both ends of the outer spline, and the torque is transmitted by the fitting of the inner and outer splines to receive the radial load. And the separation of the torque transmission function can be realized, and the reliability of the structure of the variable gauge wheel set can be improved.

Specifically, as shown in FIG. 8, the lock pin 40 includes a pin body 41, an opening groove 42 is provided on one side of the pin body 41, and the opening groove 42 is the pin body 41. At least one lug 43 that penetrates along the radial direction and extends along the axial direction of the pin body 41 is provided in the opening groove 42 to improve the force receiving condition of the single lug 43. For example, two parallel lugs 43 may be provided to improve reliability. The upper end of the lug 43 is connected to the groove top of the opening groove 42, a notch 44 is provided between the lower end of the lug 43 and the groove bottom of the opening groove 42, and the lug 43 is formed in the concave groove 32. It is for inserting. When changing the gauge, when the lock pin 40 is disengaged from the recess 32 from bottom to top under the action of a vertical upward external force, first, the lug 43 is disengaged from the recess 32 from bottom to top, and the recess 32 At this time, the notch 44 below the lug 43 faces the position of the boss 31 between the two recesses 32, and when an external force facing left or right is applied, the outer sleeve 30 becomes Moving with the wheels 10, the boss 31 is engaged in the notch 44 and moves along the notch 44, the lower end of the lug 43 is supported by the surface of the boss 31 and moves to the position of another recess 32. The pin body 41 moves downward under the action of its own gravity and downward force, the lug 43 is inserted into the concave groove 32, locking is realized, and the gauge change is completed.

Further, by matching the width of the lug 43 with the width of the concave groove 32, the lug 43 can be easily inserted into or detached from the concave groove 32, and the lug 43 is inserted into the concave groove 32. After that, it is possible to ensure that the position of the entire lock mechanism is stable and avoid shaking, and since the width of the notch 44 is equal to or larger than the thickness of the boss 31, the boss 31 engages with the notch 44. It is possible, and it becomes slidable at the notch 44.

In the embodiment of the present invention, the concave arc surface installed in the axle box body 70 is installed in order to ensure that the portion of the pin body 41 inserted into the axle box body 70 is securely fitted with the axle box body 70. Matches the outer surface of the pin body 41 on the opposite side to the side where the opening groove 42 is provided.

The pin body 41 is attached to the axle box 70 by a return spring, the upper end of the pin body 41 is connected to the return spring, and the lower end of the pin body 41 extends from the bottom surface of the axle box 70. ing. Specifically, a support seat may be installed on the axle box body 70, the upper end of the pin body 41 is connected to the return spring, the upper end of the return spring is connected to the support seat, and the return spring is the pin body. When the 41 is located in the lock space, it always has a locking force to maintain the locked state, and when it is locked again after unlocking, it gives the opposite acting force to the pin body 41 to help quick locking. belongs to. A through hole slightly larger than the diameter of the pin body 41 is provided on the bottom surface of the axle box body 70, and the lower end of the pin body 41 extends from the bottom surface of the axle box body 70 through the through hole and the pin body is formed. Since the bottom surface of the 41 is installed as a guide slope 45 inclined upward on both sides of the central axis, the ground gauge conversion facility can easily apply an acting force to the pin body 41 to realize a gauge change. Can be done.

In order to realize the lateral positioning of the axle 80, both ends of the axle 80 are connected to the axle box body 70 via positioning bearings, respectively, and the lateral movement of the axle 80 with respect to the axle box body 70 is prevented. A deep groove ball bearing can be adopted as the positioning bearing.

In the embodiment of the present invention, the axle box body 70 is provided with a track change process detection / early warning unit so as to ensure the safety of vehicle operation before and after the gauge change. It will be easier to study the kinetic response characteristics and modal matching rules of the bogie, predict the kinetic indicators of the train, suggest the fluctuation limits of the suspension parameters, and analyze the adaptability of different gauges.

The gauge conversion process of the embodiment of the present invention is triggered at the lower part of the gauge body 70 by the lock pin 40 installed at the lower part of the gauge body 70 at the time of gauge conversion, and when passing through the ground gauge conversion facility. First, lift the axle box 70 with the ground device to support the weight of the vehicle body and unload the wheel set-> Unlock the lock mechanism of the variable gauge wheel set with the ground gauge conversion facility-> Ground auxiliary track Press the inside / outside of the rim of the wheel 10 to complete the gauge conversion operation-> lock the lock mechanism-> wholesale the load of the axle box 70 and restore the load receiver by the wheel set- > The gauge conversion operation is completed and the vehicle operates normally.

Regarding the gauge conversion process detection of the embodiment of the present invention, the gauge conversion process detection / early warning unit is installed in the gauge shaft box 70 and the ground gauge conversion facility, and the safe braking distance after the gauge change is the gauge conversion process. It is set to ensure the safety and reliability of the vehicle, and when the track change fails, the alarm device is triggered to notify the vehicle that the emergency brake is applied.

[Example 2]
The distinction between the second embodiment and the first embodiment is as follows. As shown in FIG. 4, the second connection sleeve 12 in the second embodiment is externally fitted to the second support pin 32 via the bush 9, and the impact resistant rubber sleeve 8 is fixed to the bush 9. The second connection sleeve 12 is crimped to the impact resistant rubber sleeve 8, the connection sleeve, the impact resistant rubber sleeve 8, and the bush 9 are formed as an integral structure, and the connection sleeve is attached to the bush 9. It can be interlocked and freely reciprocate along the support pin. In the second embodiment, the movement can be realized only by overcoming the damping force between the first connection sleeve 11 and the first support pin 31, that is, the damping force received is small.

However, the bush 9 is made of a metal material, and the impact resistant rubber sleeve 8 is formed by vulcanizing the outer peripheral surface of the bush 9.

From the above embodiment, the embodiment of the present invention can satisfy the parking brake in different gauges of the variable gauge trolley, improve the operation efficiency of the variable gauge trolley in different tracks, and ensure the safety of vehicle operation. It can be seen that the brake caliper can be positioned laterally and the reliability can be improved.

The gear change structure of the embodiment of the present invention has a small change to the existing bogie structure, the axle of the inner part of the wheel matches the conventional axle, and the motor, gear box, etc. mounted on the axle inside the wheel. Has ample design space for the components of.

The above is merely a preferred embodiment of the present invention and does not limit the present invention. Changes, equivalent replacements, improvements and the like made within the spirit and principles of the present invention are the protection of the present invention. Is included in the range of.

1 Brake caliper 2 Mounting seat 3 Support pin 4 Damping inner sleeve 5 Spherical bearing 6 Bearing seat 7 Corrugated tube 8 Impact resistant rubber sleeve 9 Bush 10 Wheel 11 First connection sleeve 12 Second connection sleeve 13 Caliper body 14 Brake pad 20 Side beam 30 Outer sleeve 31 First support pin / boss 32 Second support pin / concave groove 40 Lock pin 41 Pin body 42 Open groove 43 Rug 44 Notch 45 Guide slope 50 Rolling bearing 60 Inner sleeve 70 Shaft box 80 Axles 100 Wheel-embedded brake discs

Claims (10)

High speed for track vehicles with a frame and a pair of side beams with the frames installed in parallel and a pair of cross beams installed in parallel between the pair of side beams. A train track variable trolley, each of which is provided with a variable track wheel set on the outside of the pair of cross beams, and a wheel-embedded brake disc is attached to the wheel of the variable track wheel set, and the side beam or the side beam or the wheel. A mounting sheet and a brake caliper are attached to the cross beam, the brake caliper is connected to the mounting sheet via a support pin, the support pin is provided horizontally below the mounting sheet, and both ends thereof are the mounting. It is fixedly connected to the seat, a connection sleeve is provided at one end of the brake caliper, a damping inner sleeve having elastic damping property is fastened and fitted in the connecting sleeve, and the connecting sleeve has the damping inner sleeve. When the wheel is locked to the support pin via the wheel and the wheel track is changed, the wheel-embedded brake disc in the wheel exerts a pushing force on the brake caliper, and the pushing force received by the connecting sleeve is the connecting sleeve and the support. When greater than the damping force between the pins, the connecting sleeve interlocks with the brake caliper and moves along the support pins.
The variable-gauge wheel set includes an axle, wheels, and a locking mechanism, each of which is provided with axle boxes at both ends of the pair of side beams, and both ends of the axle extend into the axle box. The wheels are attached to the axle and connected to the axle via splines, the locking mechanisms are each provided on the outside of the wheel and located in the axle box body, and the locking mechanism is: Connected to the wheels and used to lock and unlock the wheels to achieve wheel axle changes.
The locking mechanism comprises an inner sleeve, a rolling bearing, an outer sleeve, and a lock pin.
The inner sleeve, the rolling bearing, and the outer sleeve are firmly fitted in order from the inside to the outside, the inner sleeve is gap-fitted to the axle, and one end of the inner sleeve facing the wheel is the axle box. Extending from the body and fastened and connected to the wheel, the outer sleeve is crevice-fitted to the inner surface of the axle box and on opposite sides of the outer side of the outer sleeve, respectively, in the axial direction of the outer sleeve. A boss extending along the boss is provided, a plurality of concave grooves are provided at intervals along the longitudinal direction of the boss, and a concave arc surface having a one-to-one correspondence with the concave groove is provided on the inner wall of the axle box body. Provided, the lock pin is intended to be inserted into a lock space limited by the concave groove and the concave arc surface, and the plurality of said lock pins are provided under the action of an external force so as to realize a change in the track of the wheel. A variable trolley for high-speed trains for track vehicles, which is characterized by being able to switch between lock spaces . The length of the connection sleeve is shorter than the length of the support pin, both ends of the connection sleeve and the corresponding ends of the support pin are connected by corrugated tubes, and a gap is provided between the connection sleeve and the bottom surface of the mounting sheet. The high-speed train variable gauge trolley for a track vehicle according to claim 1, wherein the above-mentioned is provided. The damping inner sleeve includes a first damping inner sleeve and a second damping inner sleeve, and the first damping inner sleeve and the second damping inner sleeve are installed at intervals, and the first damping inner sleeve is provided. A spherical bearing is fixedly fitted to the support pin between the damping inner sleeve and the second damping inner sleeve, and the space between the spherical bearing and the connecting sleeve is positioned by a bearing seat, and the bearing seat is positioned as described above. The high-speed train track variable trolley for a track vehicle according to claim 1, wherein the connection sleeve is press-fitted and fitted to the inner surface. Two of the support pins are provided in parallel below the mounting sheet, which are the first support pin and the second support pin, respectively, and the first support pin is located outside the mounting sheet. The second support pin is located inside the mounting seat and corresponds to it, at one end of the brake caliper being provided with two connecting sleeves connected in parallel, the first connecting sleeve and the first connecting sleeve, respectively. The first aspect of the invention is a second connection sleeve, wherein the first connection sleeve is connected to a first support pin, and the second connection sleeve is connected to a second support pin. High-speed train variable gauge trolley for the described track vehicles. The mounting sheet is provided with connecting ends extending downward on both sides of the mounting sheet facing each other along the axial direction of the variable gauge wheel set, and the support pins are fixedly connected to the connecting ends. The high-speed train variable gauge trolley for the track vehicle according to claim 1. The high-speed train variable gauge trolley for a track vehicle according to claim 1, wherein a brake hanger is provided on the side beam or the cross beam, and the mounting sheet is mounted on the brake hanger. The lock pin includes a pin body, an opening groove is provided on one side of the pin body, the opening groove penetrates along the radial direction of the pin body, and the pin body is inside the opening groove. At least one lug extending along the axial direction of the lug is provided, the upper end of the lug is connected to the groove top of the opening groove, and a notch is provided between the lower end of the lug and the groove bottom of the opening groove. The high-speed train variable gauge trolley for a track vehicle according to claim 1 , wherein the lug is for being inserted into the opening groove. The pin body is mounted in the axle box by a return spring, the upper end of the pin body is connected to the return spring, and the lower end of the pin body extends from the bottom surface of the axle box. The high-speed train variable gauge trolley for the track vehicle according to claim 7 . The high-speed train gauge variable trolley for a track vehicle according to claim 1 , wherein the axle box body is provided with a track change process detection / early warning unit. The axle is installed as a stepped shaft having an intermediate diameter larger than the diameters at both ends, the wheels are provided on the intermediate shaft of the stepped shaft, and both ends of the intermediate shaft are provided, respectively, and the locking mechanism is provided on the stepped shaft. It is provided on both ends of the attached shaft,
An inner spline is provided on the inner circumference of the wheel, an outer spline is provided at both ends of the intermediate shaft of the stepped shaft, and both ends of the wheel and the intermediate shaft are fitted via the inner spline and the outer spline. Connected to
At both ends of the intermediate shaft, a three-step stepped shaft is configured, respectively, and the three-step stepped shaft has a first flange and a second flange whose diameters increase from the outside to the inside. And a third flange, the outer spline is provided on the outer periphery of the second flange, the center hole of the wheel is configured as a three-step stepped hole, and the three-step stepped hole is from the outside. It is provided with a first connection hole, a second connection hole, and a third connection hole whose diameter increases inward, and the inner spline is provided in the circumferential direction of the inner wall of the second connection hole. The first connection hole is fitted to the first flange, the inner spline is fitted to the outer spline and connected, and the third connection hole is fitted to the third flange. The high-speed train gauge variable trolley for a track vehicle according to claim 1 .

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