JPS6150867A - Meandering preventive device for railway rolling stock - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a meandering prevention device for a railway vehicle that is designed to improve riding comfort.

[Prior art]

In general, railway vehicles running on tracks are shown in Figures 1 and 2.
As shown in the figure, a plurality of bogies (■) having a plurality of axles (6) that can run on the track (1) are arranged at predetermined intervals in the longitudinal direction of the track (ill). The car body is supported by a pillow spring t16) arranged on the car body booklet.

In such railway vehicles, the underframe (6) is elastically supported by sleeve springs (8) on each axle (6), and the car body is elastically supported by a bogie. It travels on a track tll that has a section, and the vibrations generated during travel are absorbed by an axial spring (8
) and pillow springs 1151 to reduce vibrations of the vehicle body.

However, when a railway vehicle travels at high speed, various vibrations appear in the vehicle body te2J. The causes of these vibrations are: (5) Wheel tread slope/thickness of tire flange ■) Bearing abrasion resistance C) Lateral movement/damping force of oil shock absorber ρ) Track misalignment, height misalignment, gauge Possible factors include condition, roadbed, etc.

Here, the vertical, horizontal, or #
The vibration of the rear axle generally has a natural frequency ff/l that is determined by the inertia of the vehicle body and the spring constant, and the magnitude of the vibration tends to decrease when the frequency exceeds the natural frequency. The vibration caused by the snake action of the bogie rotating relative to the car body tends to be difficult to reduce even if it exceeds the natural frequency.

In this way, the conventional system causes vibrations caused by the bogie's snake motion when traveling at high speeds, which damages the east center of passenger cars.
For locomotives, this had the disadvantage of giving a negative impression to on-board equipment.

[Summary of the invention]

This invention was made to eliminate the above drawbacks.
A pair of torsion shafts that can be twisted to a predetermined position from the center of rotation of the trolley are arranged approximately parallel to the axle at a predetermined distance in the axial direction, and a pair of first links are attached to both ends of the torsion shafts. fixed,
A pair of first levers are connected to each of the first links, the other end of which is rotatably pivoted and supported movably around a predetermined position on the truck, and a pair of first levers are connected to each of the first links at both ends of the torsion shaft. The second lever is rotatably pivoted, and both ends of the second lever are connected by a connecting mechanism that moves in opposite directions, and one end is rotatably VC pivotally connected to both ends of the twisting shaft. To provide a snaking motion prevention device for a railway vehicle capable of preventing snaking motion by using an open structure in which a friction body supported by a predetermined frictional force is arranged between a pillow spring whose end is disposed on a bogie and a car body. do.

[Examples of the invention]

A one-fire embodiment of the present invention is shown in FIGS. 3 and 4.

In the figure, [11 is the track, +21 Vi wheel, (3)
is a pair of wheels (2) and a fixed shaft, (4) is a shaft (3)
Bearing box rotatably housed at both ends, above +21~(4
) forms an axle (6) that can run on the track +Il. (6) is an underframe in which several axles (6) are housed;
) are axle box supports that support the bearing box (4) so as to be movable in the vertical direction, and each is fixed to the underframe (6). (8)
is an axial spring arranged between the bearing box (4) and the underframe (6). This shaft spring (8) allows the underframe tflll Vi
, is elastically supported on the axle (6). (9) The spring support provided on the lower side of the approximately central part in the longitudinal direction of the pedestal frame (6) is the seat, and the spring support is the joint holder provided in the underframe (fil K). They are arranged at a predetermined position close to each other.A trolley (l) is formed that can run according to (5) to (5) above. A vehicle body mounted so as to be relatively rotatable, (1
3 a The spring holder is placed at a predetermined distance between the seat (13b) and the barbed holder (9).
) The distance between the spring holder and the seat (13 m) is as large as 41 mm. (14) is the connection 111tF described later.
f @f, receiving seat, above (138) (13b) 04)
Fi each car body (provided for 1 odor. +15)
ij bogie (a pair of pillow springs placed between the river and the car body (12), each spring holder is seat 191 (13a) (13b)
) and the sinking spring +151). (17a) and (17b) are bearings fixed to the bogie (car body 02 at a predetermined distance from the rotation center of the river and at a predetermined interval in the width direction of the bogie (11)) almost parallel to the axle (6). , (18a) and (18b) are torsion shafts whose predetermined ends are pivotally connected to bearings (17a) and (17b) so as to be tiltable in the horizontal direction, and have a predetermined torsional rigidity. (19a) (19
b) is a first link whose one end is fixed to each end of the torsion shaft (171) (17b), and (20a) (20b) is attached to each end of the first link (19m) (19b). The first lever is rotatably mounted, and the other ends thereof are each formed into a spherical shape and are movably supported by the joint -(10. 18
a) A second lever, one end of which is pivotally connected to the end of (18b), respectively, (zza) (22b) is attached to the vehicle body U.
Arms (241V'i) Each arm (22m) (22b
) are movably connected together, the above ■～(
) to form a connected machine (2), and each second lever (21
m) (21b) are pivoted so that they move the same distance in opposite directions. (26a) and (26b) are levers with one end rotatably attached to the ends of the torsion shafts (18a and 18b), respectively; The friction plate arranged between the spring +15106) and the lever (26a) (26b) and connected to the lever (26a) (26b), and the pillow spring (1
6) and the vehicle body (12) are formed, and the anti-snaking bag (support) is formed by the above-mentioned 9Il)-w.

Next, the operation will be explained with reference to FIGS. 5 to 7.

While the vehicle is running, the bogie (
When the river rotates in the direction shown by the arrow in Fig. 5 with respect to the vehicle body, the anti-snaking device (■) will rotate because the torsion axis a~, the coupling mechanism θ, and the friction plate (■) are supported by the vehicle body. , the joint holder (20&) (20b) supporting the first lever (20&) (20b),
1oa) (10b) respectively rotate in the directions of the arrows around the center (C) of the trolley (river), and the longitudinal component of the rotational displacement is transferred from each joint holder (10a) (10b) to the respective first lever ( 20aX20b)K, and each first lever (20a) (20b) is actuated in the direction of displacement.

The operation of each part of this snaking prevention bag [■] will be explained with reference to FIG. In FIG. 6, the operating state is shown by solid lines, and the original state of each operating part, that is, when the trolley (11) is not rotating, is shown by broken lines. Note that one arrow indicates the direction of movement, and the double arrow indicates the direction of generated force.

As shown in Fig. 5, due to the displacement caused by the rotation of the trolley (11), one side (20 m) of the first reno 3- is moved by the joint holder (x
oa), and the other (20b) is pulled by the joint holder (10b
) is pressed. In this way, the first levers (20a) (20b), which are operated in opposite directions, rotate both ends of the torsion shaft in opposite directions via the first D links (19a) (19b). When moving, twisting and turning,
Torque is generated in the direction shown by the two-line arrow 2).

As shown in FIG. Due to the torque generated on the torsion shaft 081, a force is generated on the first lever (20M) (20b) in the direction shown in FIG.
K generates a force in the opposite direction. Is −(26a)(2
The force generated at 6b) is transmitted to the friction plates (27a) and (27b) and increases with the rotation angle of the trolley (11) until it reaches a predetermined frictional force.

When the rotation angle of the truck (11) further increases, the force L/nos - (26a) (26b) reaches a predetermined frictional force, and the friction plates (27a) (27b) move in the direction of the force.

The operation of the friction plates (27a) (27b) is based on the twisting shaft (1).
The direction is to reduce the torque generated at m, so the force of the levers (26a) (26b) is
(27b) The frictional force is designed not to exceed a predetermined value. In other words, the torque generated on the twisting axis (1 m) is
The value will not exceed the predetermined value, and (
(g) → (5), (g) → C).

Next, the trolley (first, as the rotation angle of the river begins to decrease) L/
Bars (20a) (20b) 'rJ Direction VC [to reduce twist of rotation axis 081]
The force generated on the friction plate (27a) (6b) also decreases, and the friction plate (27a) (
27b) makes a bowing cry after the movement. This change is 1. which shows (5)→(G) and C)→(6) in FIG. Furthermore, when the rotation angle of the trolley (14) decreases, the twisting axis (14) is twisted in the opposite direction and the force generated at each part changes in the opposite direction, so 0 in Figure 7 → (B), (II) → (D) is shown.

In this way, the trolley (the platform when the river is vibrating once,
rr [The relationship between the rotation angle and the torque generated on the twisting shafts (18a) and (18b) is as shown in FIG. 7, which moves clockwise around the closed loop.

〔Effect of the invention〕

As explained above, according to the present invention, when the bogie rotates with respect to the car body while the vehicle is running, the twisting shaft is twisted in the ditch where the rotation angle of the bogie is a predetermined value, and the rotation angle of the bogie is By using a groove bottom that operates a friction body placed between the pillow spring and the vehicle body when the vehicle exceeds a predetermined whistle, when the vehicle travels on a curved section or the bogie is forcibly rotated along the track. This prevents the filling pressure from increasing due to the restoring force of the wheels, and completely prevents wear on the track and wheel flanges, as well as the risk of derailment. Therefore, it is possible to set a high limit speed for a vehicle that can run stably, and an improvement in ride comfort can be expected.

Furthermore, since the twisting shaft is divided into two parts at a predetermined interval at approximately the center in the longitudinal direction, it is possible to secure the space in the center of the trolley required for driving both shafts by a single electric motor, for example. It is.

[Brief explanation of the drawing]

Figure 1 is a side view of the vehicle, Figure 2 is a conventional bogie 6111
3 is a side view of one embodiment of the present invention, FIG. 4 is a perspective view of the snake movement prevention device, FIG. 5 is a plan view explaining the operation of FIG. 4, and FIG. 6 is an operation diagram. , Fig. 7 is a curve diagram showing the relationship between the turning angle of the cart and the torque. Yu is the first link, Ya is the first lever, Qυ is the second lever, ■ is the coupling device (1"V, ■ is the friction body. In each figure, the same symbols refer to the same - or equivalent parts. show.

Claims (1)

[Claims] A pair of torsion shafts having a predetermined rigidity and arranged at a predetermined distance from the center of rotation of the cart substantially parallel to the axle of the cart and with a predetermined spacing in the axial direction; A pair of first links having one end fixed to the other, one end of which is movably pivoted to the other end of each first link, and the other end of which is movably supported around a predetermined position on the trolley. a first lever, a pair of second levers each having one end rotatably pivotally attached to both ends of the torsion shaft, and a pair of second levers connected to the other end of each of the second levers, and the second levers being connected to the other end of each of the second levers. a linkage mechanism each configured to move in opposite directions;
A railway vehicle comprising a friction body supported by a predetermined frictional force between a pillow spring and a car body, one end of which is rotatably pivoted to each end of the torsion shaft, and the other end of which is disposed on the bogie. Snake behavior prevention device.