JP5745466B2 - Pantograph support device - Google Patents

Description

  The present invention relates to a pantograph support device that supports a pantograph of a railway vehicle.

  Patent Document 1 discloses a pantograph for holding a pantograph at a fixed position from a side beam of a carriage in a railway vehicle having a vehicle body tilting device that tilts the vehicle body inward of the curve with respect to the carriage when passing a curved portion of a track. A support device is described. The pantograph support device includes a pantograph support frame, a pantograph support frame guide device, a tension applying device provided on the pantograph support frame, a pair of one end connected to the tension applying device and the other end connected to a side beam of the carriage. With a rope. The pair of ropes are disposed along each side surface via a plurality of rollers provided on both side surfaces of the vehicle. And even when the tension is applied to each rope by the tension applying device and the vehicle passes through the curved portion of the track, the pantograph support frame (that is, the pantograph) is held at a fixed position.

Japanese Patent Laid-Open No. 5-115104 (FIGS. 6 and 7)

  In the pantograph support device described in Patent Document 1, the rope is supported by the outer peripheral side surface of the roller. The roller has a rotating shaft arranged in parallel with the traveling direction of the vehicle. When the vehicle passes through the curved portion of the track, the vehicle body is tilted inwardly with respect to the carriage by the vehicle body tilting device. At this time, the roller rotates with the relative movement of the rope in the vertical direction. For this reason, local wear of the rope is suppressed.

  However, when the vehicle passes through the curved portion of the track, the carriage rotates with respect to the vehicle body. For example, if the other end of the pair of ropes is arranged across the center of the carriage with respect to the direction orthogonal to the traveling direction, the other end of one rope moves forward in the traveling direction and the other end of the other rope Moves backward in the direction of travel. When the other end of the rope moves forward and backward in this way, local wear occurs on the rope. That is, local wear due to the other end of the rope being pulled forward occurs at the contact portion between one rope and the roller disposed at the lowest position of the vehicle body. Also in the contact portion between the other rope and the roller, local wear occurs due to the other end of the rope being pulled backward. As a result, the rope is easily broken.

  Patent Document 1 also describes a pantograph support device in which a rope is inserted into an outer casing provided along both side surfaces of a vehicle. Also in this case, when the vehicle passes through the curved portion of the track, the other ends of the pair of ropes are pulled forward and backward. Then, the lower end of the outer casing comes into contact with the rope exposed from the outer casing, and local wear occurs. As a result, the rope is easily broken.

  Then, the objective of this invention is providing the pantograph support apparatus which can suppress the local abrasion of a rope.

The pantograph support device according to the present invention includes a vehicle body , a carriage attached to a lower portion of the vehicle body so as to be rotatable about an axis along a vertical direction, and the vehicle body within a curved portion of a track with respect to the carriage. In a pantograph support device that supports the pantograph in a railway vehicle having a vehicle body tilting device that tilts in a direction and a pantograph provided on the roof of the vehicle body, a gantry that supports the pantograph on the roof, and the roof attached to the upper and the gantry guide device the cradle for supporting the vertical direction and the frame in orthogonal directions so as to be relatively movable perpendicular to both the traveling direction of the vehicle body relative to the roof, one end of the A pair of left and right ropes connected to the left and right side beams of the carriage and disposed to the gantry along the left and right side surfaces of the vehicle body; A tension applying device that is attached to the other end of the pair of ropes and applies a constant tension necessary to hold the gantry in a fixed position with respect to the carriage, and the traveling direction. And a pair of guide members having pulleys that are slidable in the axial direction of the shaft member and rotatably supported with respect to the shaft member. The guide members are attached to the left and right side surfaces of the vehicle body, and support the rope with the pulley.

  According to this, when the railway vehicle passes through the curved portion of the track, even if one end side of the rope moves with the rotation of the carriage, the pulley follows and moves in a direction parallel to the traveling direction. For this reason, it becomes possible to suppress local abrasion of a rope, and a rope becomes difficult to break.

  In the present invention, it is preferable that the bottom surface of the pulley groove of the pulley is curved. This increases the contact area between the rope and the bottom surface of the pulley groove. For this reason, it becomes possible to suppress further local abrasion of a rope.

  Moreover, in this invention, it is preferable that the width | variety of the pulley groove of the said pulley is larger than the diameter of a rope. Thereby, when the one end side of a rope moves, it becomes possible to suppress further local abrasion of a rope.

  In the present invention, it is preferable that a spherical joint member is attached to a side beam of the carriage, and one end of the rope is connected to the spherical joint member. Thereby, when the carriage is rotated, the rope smoothly swings with the spherical joint member as a fulcrum. For this reason, it becomes possible to suppress that the end of a rope is damaged.

  Moreover, in this invention, it is preferable that the said guide member is attached to the lower end part of the said vehicle body, and the one end of the said rope is connected to the lower end part of the said side beam. As a result, when the carriage is rotated, the angle between the part from the pulley to one end and the other part is reduced in the rope. For this reason, the lateral force applied to the contact portion of the rope with the pulley is reduced.

  According to the pantograph support device of the present invention, when the railway vehicle passes through the curved portion of the track, even if one end side of the rope moves with the rotation of the carriage, the pulley follows and moves in a direction parallel to the traveling direction. Moving. For this reason, it becomes possible to suppress local abrasion of a rope, and a rope becomes difficult to break.

1 is a schematic plan view of a railway vehicle including a pantograph support device according to an embodiment of the present invention. It is sectional drawing along the II-II line | wire shown in FIG. FIG. 2 is a situation diagram when the railway vehicle shown in FIG. 1 passes through a curved portion of a track. It is sectional drawing along the IV-IV line shown in FIG. (A) is a partial side view showing a partial cross section when the vehicle body shown in FIG. 2 is viewed from the right side, and (b) is a situation diagram when the pulley moves in a direction parallel to the traveling direction. .

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  A railway vehicle 100 including a pantograph support device 1 according to an embodiment of the present invention will be described below with reference to FIGS.

  As illustrated in FIG. 1, the vehicle 100 includes a vehicle body 50 and two carriages 70. The vehicle body 50 has a rectangular parallelepiped shape that is long in the traveling direction A. As shown in FIG. 2, a vehicle body cover 51 that covers the left and right side surfaces 50 a of the vehicle body 50 and the roof is attached to the vehicle body 50. The carriage 70 has a rectangular planar shape, and is attached to the lower front part and the lower rear part in the traveling direction A of the vehicle body 50. Each carriage 70 has a carriage frame 71 and four wheels 72 and supports the vehicle body 50 from below. The wheels 72 are fixed to both ends of each axle (not shown: an axle parallel to a direction orthogonal to the traveling direction A (left and right direction in FIG. 2)), and can be rotated to the carriage frame 71 via the axle. It is supported by. As shown in FIG. 1, the carriage 70 is attached to the vehicle body 50 so as to be rotatable about a center point B of the carriage 70. As a result, when the vehicle 100 passes through the curved portion of the track, the carriage 70 rotates in the track bending direction with respect to the vehicle body 50 in plan view (see FIG. 3).

  The vehicle 100 includes a vehicle body tilting device 80 as shown in FIG. The vehicle body tilting device 80 includes a pendulum beam 81, a roller device 82, and a hydraulic cylinder 83. The vehicle body tilting device 80 has substantially the same configuration as the vehicle body tilting device described in Japanese Patent Laid-Open No. 5-115104, although the installation of hydraulic cylinders (actuators) is different.

  The pendulum beam 81 supports the vehicle body 50 via two air springs 90. The roller device 82 is fixed to the bogie frame 71 and supports the pendulum beam 81 movably along the lower curved portion 81 a of the pendulum beam 81. The lower curved portion 81 a is formed in an arc shape having a radius R with the pendulum point C of the vehicle body 50 as the center. One end of the hydraulic cylinder 83 is rotatably supported by the pendulum beam 81 and the other end is rotatably supported by the carriage frame 71. The hydraulic cylinder 83 is stroked by the control device of the vehicle 100 so that the vehicle body 50 is inclined inwardly with respect to the carriage 70 when the vehicle 100 passes through the curved portion of the track (see FIG. 4). Is controlled. At this time, the vehicle body 50 rotates around the pendulum point C by a predetermined angle. As a result, as shown in FIG. 4, in the curved portion of the track, the vehicle 100 is tilted inward by the cant, and the vehicle body 50 is further tilted inward by the vehicle body tilting device 80.

  As shown in FIG. 2, the vehicle 100 is provided with a pantograph support device 1. The pantograph support device 1 includes a gantry 5, a gantry guide device 10, a tension applying device 15, a pair of ropes 30, a pair of guide members 40, and a plurality of rollers 48. As shown in FIG. 2, the plurality of rollers 48 are provided on the roof of the vehicle body 50 and the upper portions of the left and right side surfaces 50 a, and each of the ropes 30 is disposed along the left and right side surfaces 50 a from the roof of the vehicle body 50. . Note that the gantry 5, the gantry guide device 10, and the tension applying device 15 of the pantograph support device 1 of the present embodiment are the pantograph support gantry, the pantograph support gantry guide device, and the tension applying device described in JP-A-5-115104. Is almost the same.

  As shown in FIG. 2, the gantry 5 supports the pantograph 21 of the vehicle 100 on the upper surface thereof. The gantry guide device 10 includes a guide 11 and a slider 12. The guide 11 is fixed on the roof of the vehicle body 50. The guide 11 is formed in an arc shape having a radius R with the pendulum point C as the center. The slider 12 incorporates a bearing that smoothly moves the gantry 5 along the guide 11. With this configuration, the gantry guide device 10 enables the gantry 5 to move relative to the vehicle roof in a direction orthogonal to the traveling direction A of the vehicle 100.

  The tension applying device 15 is attached to the center of the lower surface of the gantry 5. The tension applying device 15 includes a drum 16 having a rotation axis parallel to the traveling direction of the vehicle 100. One end (the other end) of each rope 30 is connected to the drum 16, and a part of the one end side of the rope 30 is wound around the drum 16. A spiral spring (not shown) is provided on the same axis as the rotation axis of the drum 16. The spiral spring is set in a direction in which each rope 30 is wound around the drum 16 with a constant tension. With this configuration, the tension applying device 15 prevents the rope 30 from being forcedly pulled or bent due to the vertical movement / left / right movement of the vehicle body 50 supported by the air spring 90, and the platform 5 is always attached to the carriage 70. Hold it at a fixed position.

  Holding the gantry 5 at a fixed position means that the distance from the left and right side beams 71a of the bogie frame 71 of each rope 30 to the drum 16 of the tension applying device 15 is kept constant. Is held at the neutral position before tilting (position where the center of the pantograph 21 is on a line standing perpendicular to the center of the orbit). That is, when the vehicle body 50 is tilted by the vehicle body tilting device 80, the pantograph current collecting boat 22 is also largely tilted inward of the curve and tends to come off the overhead line 23. However, the pantograph 21 is held in the neutral position by the tension applying device 15. For this reason, it becomes possible to prevent the pantograph collector boat 22 from coming off the overhead wire 23.

  The pair of ropes 30 in the present embodiment are wire ropes made of a plurality of wires, but may be rope-like members made of other materials. As shown in FIG. 1, the pair of ropes 30 are arranged at positions sandwiching the vehicle body 50 (center point B) in the direction orthogonal to the traveling direction A. As shown in FIG. 2, the pair of ropes 30 are disposed along the left and right side surfaces 50a of the vehicle body 50 while being supported by a plurality of rollers 48 and a pair of guide members 40, and the other end (one end) is a joint member. 34 is connected to the lower end of the side surface of the side beam 71a. Thereby, even if the rope 30 and the vehicle body 50 move relative to each other in the vertical direction due to the inclination (rotation) of the vehicle body 50, wear of the rope 30 is suppressed.

  A known spherical joint member is employed as the joint member 34. Thereby, the other end of the rope 30 can be rotated 360 °. For this reason, when the cart 70 rotates, the rope 30 swings smoothly with the joint member 34 as a fulcrum. If the other end of the rope 30 is fixed to the side beam 71a so as not to move, a bending stress is repeatedly generated at the other end of the rope 30 every time the carriage 70 rotates, and the other end of the rope 30 is damaged. It becomes easy to do. However, in the present embodiment, since the spherical joint member is provided at the other end of the rope 30, damage to the other end of the rope 30 can be suppressed.

  The pair of guide members 40 are attached to the lower ends of the side surfaces 50a of the vehicle body 50 as shown in FIG. The guide member 40 is disposed at the same position as the roller 48 in the traveling direction A. The guide member 40 has the same configuration as a known rotary ball spline. As shown in FIG. 5A, the guide member 40 has a pair of flanges 41 erected from the side surface 50a, a spline shaft 42, a sleeve 43, and , Pulley 44 and the like.

  The spline shaft 42 is a columnar shaft member that extends long along the traveling direction A of the vehicle 100. Both ends of the spline shaft 42 are supported by a pair of flanges 41. Further, three grooves 42 a (only two grooves 42 a are shown in FIG. 5) are formed on the outer peripheral surface of the spline shaft 42. These grooves 42 a extend in the traveling direction A and are arranged at equal intervals along the circumferential direction of the spline shaft 42.

  The sleeve 43 has a cylindrical shape, and three retainers (not shown) are fixed to the inner peripheral surface thereof. Each retainer rotatably holds a plurality of balls 43a arranged along the traveling direction A. The three cages are arranged at positions facing the grooves 42a, respectively, and a plurality of balls 43a are arranged in the grooves 42a. As a result, the sleeve 43 can move along with the pulley 44 along the spline shaft 42 in a direction parallel to the traveling direction A.

  The pulley 44 is supported at the center of the outer peripheral surface of the sleeve 43 via a bearing 45 as shown in FIG. As a result, the pulley 44 can rotate in the circumferential direction of the sleeve 43 (direction rotating around the spline shaft 42). For this reason, as shown in FIG. 4, even if the vehicle body 50 is inclined by the vehicle body tilting device 80 and the rope 30 supported by the pulley 44 moves relative to the vehicle body 50 in the vertical direction, the pulley 44 rotates. . As a result, sliding between the rope 30 and the pulley 44 is suppressed, wear of the rope 30 can be suppressed, and the life of the rope 30 is extended.

  Further, the bottom surface of the pulley groove 44a is curved. Thereby, the contact area of the rope 30 and the said bottom face becomes large. For this reason, local wear of the rope 30 can be further suppressed.

  In such a pair of ropes and guide members 40, when the vehicle 100 passes through the curved portion of the track, the position of the carriage 70 indicated by a two-dot chain line in FIG. 3 (position when passing through the straight portion of the track). From the vehicle to the position indicated by the solid line. Then, the joint member 34 on the upper side in FIG. 3 (outside the curved portion) moves forward in the traveling direction A from the position indicated by the two-dot chain line before the rotation, and lower in FIG. 3 (inside the curved portion). A certain joint member 34 moves rearward in the traveling direction A from the position indicated by the two-dot chain line before the rotation. This joint member 34 moves by a distance T1 in a direction parallel to the traveling direction A and a distance T2 in a direction orthogonal to the traveling direction A, as shown in the enlarged portion of FIG. As the joint member 34 moves, the other end of the rope 30 moves, and a part of the rope 30 (portion disposed along the side surface of the vehicle 100) also tilts. At this time, if the pulley 44 supporting the rope 30 is not movable in the direction parallel to the traveling direction A, the pulley of the rope 30 in the direction parallel to the traveling direction A as shown by a two-dot chain line in FIG. The distance from the position supported by 44 to the joint member 34 remains T1. However, in the present embodiment, since the pulley 44 can move along the traveling direction A, the position supported by the pulley 44 of the rope 30 is parallel to the traveling direction A, as shown by the solid line in FIG. It approaches the joint member 34 with respect to the direction. For this reason, the inclination in the part from the pulley 44 of the rope 30 to the joint member 34 becomes loose compared with what the pulley 44 does not move. As a result, the contact pressure of the pulley 44 with respect to the rope 30 is reduced, and local wear of the rope 30 is suppressed.

  Further, the width of the pulley groove 44 a of the pulley 44 is set to be twice or more the diameter of the rope 30. Thus, since the width of the pulley groove 44a is larger than the diameter of the rope 30, as shown in FIG. 5B, the other end of the rope 30 is moved by the rotation of the carriage 70 and a part of the rope 30 is inclined. Even so, the contact pressure between the upper and lower portions of the pulley 44 and the rope 30 is reduced. If the width of the pulley groove 44a and the diameter of the rope 30 are the same, if the rope 30 is inclined, the contact pressure between the upper and lower portions of the pulley 44 and the rope 30 becomes very large and the rope 30 is damaged. In the present embodiment, such damage to the rope 30 is suppressed.

  Further, the rope 30 is pulled downward by the movement of the joint member 34. At this time, the rope 30 is unwound from the drum 16 by a required length. Even in this case, since the pulley 44 rotates, as described above, the sliding between the rope 30 and the pulley 44 is suppressed, the wear of the rope 30 can be suppressed, and the life of the rope 30 is extended. .

  As described above, according to the pantograph support device 1 of the present embodiment, the pulley 44 of the guide member 40 is provided to be slidable in the traveling direction A. For this reason, when the railway vehicle 100 passes through the curved portion of the track, even if the other end side of the rope 30 moves as the carriage 70 rotates, the pulley 44 follows and moves in a direction parallel to the traveling direction A. Moving. For this reason, it becomes possible to suppress local abrasion of the rope 30, and the rope 30 is hardly damaged.

  Further, the guide member 40 is attached to the lower end of the side surface 50a of the vehicle body 50, and the joint member 34 is attached to the lower end of the side beam 71a. Thereby, the distance from the guide member 40 to the joint member 34 becomes comparatively long. For this reason, when the carriage 70 rotates, the angle formed between the part from the pulley 44 to the other end (joint member 34) and the other part in the rope 30 becomes small. As a result, the lateral (horizontal) force applied to the contact portion of the rope 30 with the pulley 44 is reduced. Further, in the present embodiment, the above-described effect can be obtained by replacing the lowermost roller disposed in the conventional vehicle body with the guide member 40, and the vehicle body can be easily modified. It becomes possible.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims. For example, the joint member 34 may be a joint member (for example, a universal joint having two or more axes) that can swing in a direction parallel to the traveling direction A and an axle direction of the carriage 70 (a direction orthogonal to the traveling direction A). Good. Further, the joint member 34 may be a joint member that can swing only in one of the direction parallel to the traveling direction A and the axle direction of the carriage 70.

DESCRIPTION OF SYMBOLS 1 Pantograph support apparatus 5 Base 10 Base support apparatus 15 Tension applying apparatus 30 Rope 34 Joint member 40 Guide member 42 Spline shaft (shaft member)
44 Pulley 44a Pulley groove 70 Bogie 71a Side beam 80 Car body tilting device

Claims (5)

The vehicle body, and a carriage mounted for rotation about an axis along the vertical direction in the lower portion of the vehicle body, and the body-tilt system for tilting the vehicle body in the curved section of the track to curve inwardly with respect to the carriage In a pantograph support device for supporting the pantograph in a railway vehicle having a pantograph provided on the roof of the vehicle body ,
A stand for supporting the pantograph on the roof;
It mounted on the roof, and a frame guide device for supporting the vertical direction and the frame in orthogonal directions so as to be relatively movable perpendicular to both the traveling direction of the vehicle body relative to the cradle the roof,
A pair of left and right ropes, one end of which is connected to the left and right side beams of the carriage, and is arranged to the gantry along the left and right side surfaces of the vehicle body;
A tension applying device that is attached to the gantry and connected to the other ends of the pair of ropes, and applies a certain tension necessary to hold the gantry at a certain position with respect to the cart;
A shaft member parallel to the advancing direction, and a pair of guide members having pulleys that are slidable in the axial direction of the shaft member and rotatably supported with respect to the shaft member;
The pantograph support device, wherein the guide members are respectively attached to left and right side surfaces of the vehicle body, and the rope is supported by the pulley.   The pantograph support device according to claim 1, wherein a bottom surface of the pulley groove of the pulley is curved.   The pantograph support device according to claim 1 or 2, wherein a width of a pulley groove of the pulley is larger than a diameter of the rope. A spherical joint member is attached to the side beam of the carriage,
The pantograph support device according to claim 1, wherein one end of the rope is connected to the spherical joint member. The guide member is attached to a lower end portion of the vehicle body,
5. The pantograph support device according to claim 1, wherein one end of the rope is connected to a lower end portion of the side beam.

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