JP4318812B2 - Railway vehicle body tilting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle body tilting device for a railway vehicle that tilts the vehicle body so that the vehicle travels on a curved track at high speed without impairing the ride comfort.
[0002]
[Prior art]
As a vehicle body tilting device for forcibly giving a vehicle body an inclination suitable for a vehicle speed, a radius of curvature, and a cant amount on a curved track, as shown in, for example, Japanese Patent Laid-Open No. 7-125634, Each of the hydraulic cylinders is disposed, and a vehicle body tilting device that tilts the vehicle body by extending either one of the hydraulic cylinders or under the left and right air springs as disclosed in JP-A-6-278604. There is a vehicle body tilting device in which a hydraulic circuit is configured so that the hydraulic cylinders communicate with each other, and when one hydraulic cylinder extends, the other hydraulic cylinder contracts.
[0003]
[Problems to be solved by the invention]
However, the above-described configuration is disadvantageous in terms of weight and cost because a hydraulic system including a hydraulic pump and hydraulic piping and an electric system for hydraulic control are constructed. Moreover, since the hydraulic system has a time lag until the hydraulic pressure rises, there is a concern that the vehicle body tilt control may be delayed. Furthermore, it is troublesome in terms of maintenance.
[0004]
Therefore, the present invention provides a vehicle body tilting device for a railway vehicle that is operated by an electric system, is lighter in weight, less expensive than a hydraulic system, is capable of accurate position control and quick response control, and is easy to maintain. It is intended to provide.
[0005]
[Means for Solving the Problems]
In order to achieve the above-described object, a vehicle body tilting apparatus according to the present invention has, as a first configuration , a railway vehicle that supports the left and right sides of a lower surface of a vehicle body via air springs respectively disposed on left and right side beams of a carriage . left and right respectively supporting the nut member of the left and right are respectively provided rotatably in a horizontal direction by the screw direction in the same, left and right nut members respectively screwed to the left and right air springs on the left and right side on the beam and the bolt member, and an electric drive source for rotating each of said left and right nut members, are respectively a gear coupled to the nut member of the right and left with the electric drive source, power for the same amount reverse rotation together the left and right nut members together characterized in that it is constituted by a transmission mechanism, a second configuration, the left and right bolts respectively rotatably provided in a horizontal direction by the screw direction in the same to the left and right side on the beam A left and right nut member that is screwed to the left and right bolt members to support the left and right air springs, an electric drive source that rotates the left and right bolt members, and the electric drive source and the left and right It is characterized by comprising a power transmission mechanism which is gear-coupled to each of the bolt members and rotates the left and right bolt members in the same amount in the reverse direction . Further, a beam member can be interposed between the air spring and the bolt member or the nut member.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail based on an embodiment shown in the drawings. FIGS. 1 to 6 show a first embodiment of the present invention. A carriage 1 includes a carriage frame 4 formed by left and right side beams 2 and 2 and lateral beams 3 and 3 connecting both side beams 2 and 2. The carriage frame 4 is provided with a pair of wheel shafts 5 and 5 and supports the lower surface of the floor of the vehicle body 7 via the air springs 6 and 6 respectively disposed on the side beams 2 and 2. The traction force is transmitted by connecting the pin 8 and one horizontal beam 3 of the carriage 1 with a traction rod 9.
[0007]
The carriage 1 is provided with a vehicle body tilting device 10. The vehicle body tilting device 10 is mounted on the both side beams 2 and 2 of the carriage 1 so as to be rotatable in the horizontal direction, and the ball screw nut members 11 and 11 having the same screw direction are mounted on the cross beam 3 and both nut members 11 and 11 A servomotor 12 as an electric drive source that rotates the motor 11, a power transmission mechanism 13 that is gear-coupled to the servomotor 12 and the nut members 11, 11, and reversely rotates the nut members 11, 11 by the same amount; The bolt members 14 and 14 are screwed into the nut members 11 and 11 and support the center of the lower surface of the air springs 6 and 6, respectively.
[0008]
The nut members 11 and 11 are fixed to pedestals 16 and 16 provided on the side beams 2 and 2 via bearings 15 and 15 such as cross roller bearings so as to be rotatable in the horizontal direction. The electric servo motor 12 is equipped with a brake and an encoder. The power transmission mechanism 13 includes a bevel gear 17 formed on the outer periphery of both pedestals 16, a shaft 18 that is disposed in the width direction of the carriage 1 and is rotatably provided, and is provided at both ends of the shaft 18. The bevel gears 19 and 19 mesh with the bevel gears 17 and 17, respectively, and the shaft 21 gear 21 meshes with the gear 20 of the output shaft 12a of the electric servo motor 12. The shaft 18 is not limited to one continuous between the bevel gears 17 and 17 but may be divided and connected via a shaft coupling.
[0009]
The transverse beams 3 and 3 are provided with brackets 22 and 22 on both sides of the center pin 8, and left and right movement stoppers 23 are fixed to the respective brackets 22, and the brackets 22 and the air springs 6 are connected to each other. In the middle, links 24 for restricting torsion of the air spring 6 are provided.
[0010]
In the stationary state shown in FIG. 1, the vehicle body tilting device 10 configured as described above generates a torsional torque on the shaft 18 and takes a vertical load, thereby restricting the rotation of the bolt members 14 and 14. Then, when the servo motor 12 is driven to rotate the shaft 18, the nut members 11 and 11 that are gear-coupled via the bevel gears 17 and 19, respectively, are rotated in reverse by the same amount, as shown in FIG. Since the other bolt member 14 is raised and the other bolt member 14 is lowered, the vehicle body 7 can be inclined. Since the shaft 18 is responsible for the vertical load due to the torsional torque, the servo motor 12 only needs to have the left and right loads on the vehicle body and the torque necessary for the inclination of the vehicle body. It can be quite small compared to the case. In the case of a control failure, the vehicle body 7 does not fall even if it is tilted.
[0011]
With this configuration, the vehicle body 7 can be tilted by an electric system, and it is lighter in weight, smaller in installation space, lower in cost, accurate position control and quick response control, and maintenance is possible. Is also easy. Further, since the torque applied to the shaft 18 is small, the shaft diameter of the shaft 18 can be reduced.
[0012]
7 to 12 show a second embodiment of the present invention. In the following embodiment, the same elements as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. . The present embodiment is suitable for, for example, a case where an articulated carriage is configured, or a case where the air spring 6 can be inserted into a position higher than the floor surface of the vehicle body 7, and the bolt member is attached to the base 16 on the side beam 2. 14 is fixed, and the nut member 11 screwed to the bolt member 14 is fixed to the lower portion of the cylindrical body 25, and the air spring 6 is supported by the cylindrical body 25. The side beam 2 is provided with a support cylinder 26 around the bolt member 14 that supports the cylindrical body 25 so as to be movable in the vertical direction by ball spline engagement.
[0013]
Further, left and right moving stoppers 23 and 23 are provided to be movable in the width direction of the carriage 1 in conjunction with the inclination of the vehicle body 1. That is, one of the left and right movement stoppers 23 has a head portion 23 a and a shaft portion 23 b, and is provided so as to be movable in the width direction of the carriage 1 by inserting the shaft portion 23 b into the support hole of the bracket 22. The other left-right movement stopper 23 has a head portion 23a and a shaft portion formed of a bolt member 23c of a ball screw. The bracket 22 that supports the left and right movement stopper 23 is provided with a box 28 that is rotatably provided with a nut member 27 into which the bolt member 23c is screwed. A gear 29 and a shaft 18 fixed to the nut member 27 are provided on the shaft 18. The provided gear 30 is engaged. One of the left and right moving stoppers 23 and the other left and right moving stopper 23 are connected by a frame 31 surrounding the center pin 8.
[0014]
With this configuration, in addition to the same effects as those of the first embodiment, the vehicle body tilt center can be increased, and the control force can be reduced if the vehicle body center of gravity approaches the tilt center. Further, the vehicle body tilt center can be positioned above the vehicle body center of gravity, and when the control fails, the servo motor 12 can be released to make a natural pendulum. Further, since the center of the vehicle body tilt becomes a high position, the swing width of the center pin 8 accompanying the tilt of the vehicle body 7 becomes large. To cope with this, if the distance between the left and right moving stoppers 23 and 23 is widened, the control failure will occur. When the vehicle body 7 is tilted in the opposite direction, the amount of movement of the center of gravity of the vehicle body to the outer gauge side increases until the movement of the vehicle body 7 is stopped by the left and right movement stoppers 23, 23, and the Although it is disadvantageous against the slipping, as described above, the distance between the left and right motion stoppers 23, 23 is enabled by allowing the left and right motion stoppers 23, 23 to move in the width direction of the carriage 1 in conjunction with the inclination of the vehicle body 1. It is possible to cope with the inclination of the center pin 8 without widening.
[0015]
FIGS. 13 to 16 show a third embodiment of the present invention. In this embodiment, as in the first embodiment, the bolt members 14 and 14 are moved up and down by the rotation of the nut members 11 and 11. In this configuration, beam members 32 and 32 are interposed between the air springs 6 and 6 and the bolt members 14 and 14. The beam members 32, 32 are supported by brackets 33, 33 provided at the center of the horizontal beams 3, 3 so that their base end portions can be rotated in the vertical direction by pin coupling. The bolt members 14, 14 are formed by opening insertion holes of the push-up rods 34, 34 on the upper surface, and support the beam members 32, 32 by the push-up rods 34, 34.
[0016]
A receiving seat 35 with low sliding resistance is provided between the lower end of each lifting rod 34 and the bottom of the insertion hole 14a, and a receiving seat with low sliding resistance is provided between the upper end of each lifting rod 34 and the lower surface of the beam member 32. Each seat 36 is provided. Each push-up rod 34 is formed as a convex surface whose upper and lower ends are arcuate in the vehicle body width direction, and each of the receiving seats 35 and 36 is a concave surface in which the contact surface with the push-up rod 34 is arcuate in the vehicle body width direction. The relative rotational displacement and the relative lateral displacement generated between the upper portion of the push-up rod 34 and the beam member 32 at the time of inclination are released by sliding between the push-up rod 34 and the receiving seats 35 and 36. . The upper and lower ends of the push-up rod 34 may be formed into a spherical convex surface, and the receiving seats 35 and 36 may be formed into a spherical concave surface. In addition, when it forms in a spherical convex surface, the rotation stop with respect to the bogie frame 4 of the bolt member 14 is required.
[0017]
With this configuration, the vehicle body 7 can be tilted even when the positions of the bolt members 14 and 14 coincide with or do not coincide with the center of the lower surface of the air springs 6 and 6. In addition, since the longitudinal and lateral loads of the air springs 6 and 6 are received by the beam members 32 and 32, the horizontal load on the bolt members 14 and 14 is small, and the point of action of the load on the bolt member 14 is Since the push-up rod 34 and the receiving seat 35 are slid, it is advantageous in terms of bending moment. Further, as shown in FIG. 15 , when the vehicle body is tilted, the upper surface plate and the lower surface plate of the air springs 6 and 6 are substantially parallel. Can be received. Further, without using the push-up rod 34, the upper end surface of the bolt member 14 is formed as a convex surface, and the pin holes for coupling the beam members 32, 32 to the brackets 33, 33 are used as long holes or rubber bushes when the vehicle body is tilted. You may make it miss a relative left-right displacement. In addition, as shown in FIG. 17, the beam members 32 and 32 may be integrally formed on the left and right sides, and may be coupled to the brackets 33 and 33 with one pin each. In this case, no vertical load acts on the pins. Thus, the pin hole may be a long hole up and down, or an adapter may be provided to reduce the surface pressure of the pin.
[0018]
18 to 20 show a fourth embodiment of the present invention. In this embodiment, in addition to the configuration of the third embodiment, the left and right side beams 2, 2 and beam members of the carriage 1 are shown. Auxiliary air springs 37, 37 are provided between the auxiliary air springs 37, 32, both the auxiliary air springs 37, 37 are connected by a pipe 38, and both the auxiliary air springs 37, 37 are connected to and disconnected from the pipe 38. A control valve 39 is provided. Both auxiliary air springs 37 and 37 use the pressure air used for the air spring 6 as an air source.
[0019]
Thus, during normal operation, the control valve 39 is in a communicating state and the auxiliary air springs 37, 37 are filled with pressurized air, so that a part of the load that the nut members 11, 11 and the bolt members 14, 14 bear is borne. And durability of nut members 11 and 11 and bolt members 14 and 14 can be improved. Since both the auxiliary air springs 37 and 37 are in communication with each other, when the vehicle body is tilted, the pressure air moves from one auxiliary air spring 37 to the other auxiliary air spring 37, which affects the capacity of the servo motor 12. There is nothing.
[0020]
Further, when the control fails and the vehicle body 7 is tilted, the control valve 39 is shut off by an electric signal or the like, and the height of the auxiliary air springs 37 and 37 is adjusted separately, so that the vehicle body 7 is in a neutral state. Can be restored.
[0021]
FIG. 21 shows a fifth embodiment of the present invention. In this embodiment, the gear 20 of the output shaft 12a of the electric servo motor 12 is engaged with the bevel gear 17 of one pedestal 16, and the bevel gear 17 is engaged. The rotation is transmitted to the bevel gear 17 of the other pedestal 16 via the shaft 18.
[0022]
FIG. 22 shows a sixth embodiment of the present invention. In this embodiment, the nut members 11 and 11, the bolt members 14 and 14, and a trapezoidal screw are used. This is the same as the embodiment.
[0023]
FIGS. 23 to 26 show a modification of the power transmission mechanism 13. FIG. 23 shows a case where a hypoid gear 40 is formed on the outer periphery of both pedestals 16 and meshed with the bevel gear 19 of the shaft 18, FIG. 25, a spur gear 41 is formed on the outer periphery of both pedestals 16, a bevel gear 43 is provided on a small-diameter spur gear 42 that meshes with the spur gear 41, and the bevel gear 19 of the shaft 18 is engaged with the bevel gear 43. FIG. 26 shows a state where the worm 45 of the shaft 18 is engaged with the worm wheel 44 formed on the outer periphery of the both pedestals 16.
[0024]
FIG. 27 synchronizes the body tilting device 10 of the carriage 1 before and after the body 7 and the pantograph movable device as disclosed in the registered utility model No. 2547864. That is, a gear box 46 is provided on the shaft 18 of one carriage 1, a shaft 47 having a universal joint with a ball spline is provided on the gear box 46, and one bevel gear 50 of the shaft 49 is connected to the bevel gear 48 of the shaft 47. And the bevel gear 53 of the shaft 52 for synchronously operating the vehicle body tilting device 10 of the other carriage 1 to the other bevel gear 51 of the shaft 49 and the bevel gear 55 of the shaft 54 for synchronously operating the pantograph movable device. With the meshing, the bogie tilting device 10 and the pantograph movable device of one cart 1 and the other cart 1 are operated synchronously. This ensures that even if the control unit fails and goes out of control, accidents where the pantograph is disconnected from the overhead line or where the front and rear carriages tilt in the opposite direction and the vehicle diagonally loses its weight is derailed. be able to. Further, instead of mounting the servo motor 12 on each carriage, one set may be mounted on the vehicle body, and the shaft 49 or the shafts 52 to 54 may be rotationally driven.
[0025]
【The invention's effect】
As described above, the vehicle body tilting device of the present invention is provided with either the nut member or the bolt member having the same screw direction on each side beam of the carriage so as to be rotatable in the horizontal direction, and the electric drive source and both nuts. A bolt member that is gear-coupled to the member or the bolt member and has a power transmission mechanism that reversely rotates the nut member or the bolt member by the same amount, and an air spring that supports the vehicle body is screwed to the nut member or the bolt member. Alternatively, the nut member or bolt member is supported by the nut member, and the nut member or bolt member on the both side beams is reversely rotated by the electric drive source to raise one bolt member or nut member and lower the other bolt member or nut member. The vehicle body can be tilted with a lighter weight, smaller installation space, lower cost, accurate position control and quick response control compared to a hydraulic system. In performance, maintenance is also easy. Also, by interposing a beam member between the air spring and the bolt member or nut member, the vehicle body can be inclined even when the position of the bolt member or nut member coincides with or does not coincide with the center of the lower surface of the air spring. Can do.
[Brief description of the drawings]
FIG. 1 is a sectional view of a tilting device showing a first embodiment. FIG. 2 is a plan view of a tilting device of a first embodiment. FIG. 3 is a sectional view showing a vehicle body tilting state of the first embodiment. 4] Partially enlarged cross-sectional view showing the vehicle body tilting state of the first embodiment example. [FIG. 5] Plan view of the power transmission mechanism of the first embodiment example. [FIG. 6] FIG. FIG. 7 is a side view showing the second embodiment. FIG. 8 is a partially enlarged cross-sectional view of the tilting device of the second embodiment. FIG. 9 is a plan view of the tilting device of the second embodiment. 10 is a cross-sectional view of a tilting device according to a second embodiment. FIG. 11 is a cross-sectional view illustrating a vehicle body tilting state according to a second embodiment. FIG. 12 is a cross-sectional view taken along the line XII-XII in FIG. FIG. 14 is a plan view of a tilting device according to a third embodiment. FIG. 15 is a vehicle body tilt state according to the third embodiment. FIG. 16 is a side view showing a coupling state of a vehicle body and a carriage according to a third embodiment. FIG. 17 is a diagram showing another example of coupling between a beam member and a bracket. FIG. 18 is a fourth embodiment. FIG. 19 is a sectional view showing an auxiliary air spring. FIG. 20 is a side view showing a fourth embodiment. FIG. 21 is a plan view showing a fifth embodiment. FIG. 22 is a sixth embodiment. FIG. 23 is a plan view showing a modification of the power transmission mechanism. FIG. 24 is a plan view showing a modification of the power transmission mechanism. FIG. 25 is a side view showing a modification of the power transmission mechanism. FIG. 27 is a plan view showing a modification of the transmission mechanism. FIG. 27 is a plan view of a power transmission mechanism that synchronizes the body tilting device and the pantograph movable device of the front and rear carriages.
DESCRIPTION OF SYMBOLS 1 ... Carriage, 2 ... Side beam, 6 ... Air spring, 7 ... Car body, 10 ... Car body tilting device, 11 ... Nut member, 12 ... Servo motor, 13 ... Power transmission mechanism, 14 ... Bolt member, 17, 19 ... Bevel gear 18 ... shaft

Claims (3)

In railway vehicle supporting the left and right of the vehicle body lower surface through left and right air springs respectively disposed on the side beams of the truck, are respectively provided rotatably in a horizontal direction by the screw direction in the same to the left and right side on the beam and the left and right of the nut member, and the left and right bolt member screwed respectively into left and right nut members respectively support the left and right air springs, and the electric drive source for rotating each of said left and right nut members, the electric drive sources said are respectively a gear coupled to the left and right of the nut member and the vehicle body tilt system for a railway vehicle, characterized in that it is constituted by a power transmission mechanism for same amount reverse rotation together the left and right nut members together. In a railway vehicle that supports the left and right of the lower surface of the vehicle body via air springs respectively disposed on the left and right side beams of the carriage, the left and right side beams are provided with the same screw direction so as to be horizontally rotatable. Left and right bolt members, left and right nut members that are respectively screwed into the left and right bolt members to support the left and right air springs, an electric drive source that rotates the left and right bolt members, and the electric drive source And a power transmission mechanism that is gear-coupled to the left and right bolt members and rotates the left and right bolt members in reverse by the same amount . 3. The vehicle body tilting apparatus for a railway vehicle according to claim 1, wherein a beam member is interposed between the air spring and the bolt member or the nut member .

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