JPS6144068A - 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 bogie diagram having a plurality of axles (5) that can run on the track ill is fixed at predetermined intervals in the longitudinal direction of the track ill+, and the bogie - and the single body The vehicle body (6) is supported by arranged pillow springs.

In such a railway vehicle, each axle (6) is elastically supported by a bogie with an underframe (6) elastically supported by an axle spring (8), and it can be used on straight sections or curved sections. What section does it run on the track (1), and the vibration # generated during running is transferred to the shaft spring (8)
and pillow springs) to reduce vibrations caused by the hamstrings.

However, when rolling stock moves steadily at high speed,
appears on the car body @. The causes of these vibrations include: wheel road surface gradient, tire thickness (old) bearings! SS low resistance q Damping force of lateral movement/axle shock absorber) Track misalignment, elevation misalignment, gauge condition, track bed, etc. can be considered. The vibration # has a natural frequency t determined from -1ftK car body inertia and spring constant, and the magnitude of vibration ri tends to decrease when the frequency exceeds the natural frequency, but as the bogie rotates with respect to the car body. Due to the vibration caused by the bogie's meandering motion, there is a tendency for a slight IC to occur even when the natural frequency is exceeded.

In this way, conventional systems suffer from vibrations caused by the bogie's snaking motion when traveling at high speeds, and six of them impair the ride quality of a passenger car.
For locomotives, on-board equipment 1 Goodbye bad news 3
There was a drawback that

[Summary of the invention] This invention was made to solve the above-mentioned drawbacks.
A twisting ring that can be twisted is arranged at a predetermined position from the center of rotation of the trolley almost parallel to the axle, and a pair of first rings are installed at both ends of this twisting shaft.
A pair of first levers, which are rotatably pivoted to the six first links and whose other end is movably supported at a predetermined position 11 of the truck, are fully connected and twisted. A pair of second levers are rotatably attached to both ends of the shaft, and both ends of the second levers are connected by a coupling mechanism that moves in opposite directions, and one end is rotatably attached to both ends of the twisting shaft. A friction body supported by a predetermined frictional force is arranged between a pillow spring whose other end is pivotally connected to a platform and which is disposed on a base, and a friction body supported by a predetermined friction force is arranged between the pillow spring and the stand. Provides a snake behavior prevention device.

[Embodiments of the invention]

8 and 4 show an embodiment of the present invention, Lll #-1, track, (2) a wheel, (3) a shaft fixed to a pair of single @ +21, (4 ) is the axis (3)
A bearing box that can be fully rotated at both ends of the bearing box, 12) to +4 above.
1, an axle (5) capable of running on track III is formed.

(6) is an underframe in which multiple axles (6) are housed; (7)
The bearing boxes 141 and 141 are axle box frames that are movably supported in the vertical direction, and are each fixed to the underframe (6). (8
) is a thin spring placed between the bearing box and the underframe (6). This spring (8) allows the underframe (6) to
It is supported by an axle (5) in a bullet-like manner. (9) is the underframe (
6) The spring holder provided on the lower side of the approximately central part in the longitudinal direction is the seat, +10) is the joint holder provided on the underframe (6),
It is placed at a predetermined position close to one @t+ lees fork (7). Above (5) ~ Dolly that can run by shouting (lI)
is formed. The 4R1 bogie (a single unit mounted so as to be relatively rotatable approximately at the center on the plane of the 1st plane, for example via a center plate, etc., (18a) (181)) is a spring receiver (9) of the bogie (11). A pair of spring holders placed on a single unit @ facing the holder are seats, and the distance between the spring holder and the thorn holder (9) is i.
is a predetermined distance, and the distance between the spring holder and the spring holder (9) is set to be larger than the seat (18a) by a predetermined value. H is a seat for receiving a connecting mechanism (goods) to be described later, and the above (18a) and (18b) are provided on the single unit side, respectively. A pair of pillow springs are placed between the trolley (ll and the single body), each spring holder is seated (e) (1
8a) It is a vibration isolating member placed between (13b) and the pillow spring Q510n. ◎Qη is a torsion shaft placed approximately parallel to the axle (5) and at a predetermined distance from the center of rotation of the trolley (b). The central part (17a) of a predetermined length has a predetermined diameter and both ends @
(i7b) each has a predetermined diameter smaller than the diameter of the central portion (17a), and has a predetermined torsional rigidity.

When the diameters of the torsion axes Oη are the same, and the total diameter and length are respectively dl and ll, the torsion dt2 constant Kl is given by the following equation.

Therefore, the diameter and length of the torsion axis 9η are both 4 m (17
b) is 42, 12, central part (17a) 'k as
, zs, the screw spring constant 2 becomes the following equation.

Also, 12, smell, and 13 have the following relationship.

11=12+18 Here Kl! x2, ”+ d3+ 's t
A certain rule is good. For example, if calculated under the following conditions, 4
3rd group 1.2°alt li = o, s' tld
2 becomes d2=0.9' d4. In other words, if the diameter of the center part is made 1.2 times the diameter of the conventional one and the length of the thinner parts at both ends is made the entire length of the twisting axis Qη, even if the diameter of both ends is reduced by t - 10%, the rod-like shape of the predetermined diameter is A torsional spring constant equivalent to the torsion axis of is obtained. is the first link (11) (
18b) pivotably attached to the other end of each
Noshi/(-, the other end is configured into a spherical shape and is movably supported on the four sides of the joint. (la) (+110
In b), one end is rotatably attached to each end of the torsion axis Oη.
The attached second lever (gia) (81b) is the seat on the vehicle body.
Connecting links movably connected together, the above (goods) ~ 4 form a connection mechanism (to), and the 6th brother 2 lever (jloa
) (Slab) are the same distance in opposite directions #1! It is pivoted so that it can move a long distance. (25a) (lb)
is rotatably pivoted at both ends of the torsional axis Qη.
lever, (g6a) (26t)) is vibration isolating member 0QQ
Pillow bouncing through moaning~
Shaking plate, the pillow spring Q[
A friction body e supported between 9 and the vehicle body is formed,
Snake action prevention scissors holder 4 is formed in the above Qη ~ punishment ◎ @ is a support member that connects approximately the center in the longitudinal direction of the torsion axis qη and the curved part of the car body, and is capable of rotating around the torsion axis Oη. The clamp (89a) fitted through the vibration material and this clamp (g9a)
) and the four wheel seats with a lever (g91)), and turn the α rotation axis 9.
η and the vehicle body can be brought into contact with and separated from each other.

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

While the vehicle is running, the bogie (
When 1υ rotates in the direction shown by the arrow in Fig. 6 with respect to the single body, the meandering prevention device @μ, the connecting mechanism and the friction plate (b)
and are supported by the vehicle body, so the first lever (19
a) (19b) f Joints 9 (10
a) (10b) rotate in the directions of the arrows, centering on the center tel' of the truck (II), and the longitudinal component of the rotational displacement is transferred from each joint receiver (10a) (10b) to each first lever (19a). ) (19b),
6. The levers (19a) and (19b) of the younger brother 1 move in the direction of displacement.The operation of each part of this anti-snaking device will be explained with reference to FIG. In FIG. 6, the state of the previous work is shown by a solid line, and the original state of each operating part, that is, when no rotation is occurring in the carriage (lυ), is shown by a broken line.

Note that the single arrow indicates the direction of the movement, and the double arrow indicates the direction of the generated force.

As shown in Figure 5, one of the first levers (19a) is connected to the joint holder (10a) due to the displacement caused by the rotation of the trolley (river).
The other (11) is pushed by the joint holder (199).In this way, the six younger brothers (1) are each moved in opposite directions.
Reno < - (19a) (19b) rotates both ends t of the torsion axis Qη in opposite directions through the link (18a) (18'') ' of the 6th brother 1, and the torsion axis qη has the following: 2
Torque in the direction shown by the arrow on the main line is generated. As shown in FIG. -tFl, tol→(1 on E+
0 increase by 1 0 Twisting 11111) Due to the torque generated in η, a force L is generated in the direction shown in Fig. 6 on Leno (-(19a) (19b)) of gruel 1, and the lever (gaa) ( g
sb) has an O lever (!i5a) that generates a sword in the opposite direction.
The force V generated at (g5b), the friction plate (gaaJ (g
ab) and increases with the rotation angle of the truck (l) until it reaches a predetermined frictional force.

Further, when the rotation angle IIF: increases by 1, the force of Renocou (g5b) slows down to a predetermined frictional force, and the vehicle speed & (Ha) (261)) Io moves in the direction of the force.

The action of this Sabago board (gaa) (Hb) is to reduce the torque t-g generated in the twister (U)9, which means that the force of the lever (gaa) (j15b) is the force of the lever (gaa) (j15b). Board (26
It is designed so that the frictional force does not exceed a predetermined frictional force of ~(gab). In other words, the torsion generated at the torsion axis aη is
It will not be longer than a predetermined day, and the changes in tEl-let and tFl-let in FIG. 7 are shown.

After a while, when the rotation angle of the trolley (11) begins to decrease, the first levers (19a) (19b) operate in the direction of completely reducing the torsion of the torsion shaft 9η, and the levers (g5a) (gsb
)K The force generated also decreases, and the friction plate (26ψ(gab
) maintains the state Mt after operation. This change is t in Figure 7.
Al→IGI, IcI→en are shown.

When the rotation angle of the trolley t11) decreases by 1!21, the torsion axis αη is twisted in the opposite direction, and the forces generated at each part also change in the opposite direction, resulting in iGl −tBl, circle →, D in Fig. 7.
In this way, the relationship between the cart rotation angle and the torque generated at the twisting shaft 9η when the cart (l) is rotating and vibrating is !'
Move clockwise in the closed loop shown in Figure 7.

In addition, if the trolley (only rotates once and moves in the front-back direction), both the first levers (19a) and (19b)
If it moves in the same direction, twisting @ttη will only rotate without being twisted. Therefore, the anti-snaking device (to)
No force or torque is generated. In other words, the anti-snaking device will not transmit the traction force. Furthermore, even if the truck (1) vibrates in the lateral direction, which is almost perpendicular to the running direction, the torsional axis 0η will not be transmitted through the support member @. Since it is supported by four single members, damage to the friction body 371 is prevented.

〔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 twist shaft is twisted σ until the rotation angle of the bogie reaches a predetermined value, and the bogie rotates. When the angle exceeds a predetermined one-turn angle, the friction body placed between the pillow spring and the unit is activated, so that when the vehicle travels on a curved section, the bogie can be forced to rotate along the track. This completely prevents the increase in lateral pressure due to the restoring force, and prevents the risk of track and wheel flange or 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.

Further, since the required twisting torque is obtained by setting the diameters of both ends of the twisting shaft to a predetermined diameter smaller than the diameter of the middle dog part, a predetermined distance can be secured between the twisting shaft and the wheel. This can prevent damage to the torsion shaft.

[Brief explanation of the drawing]

Figure 1 is a side view of the vehicle, Figure 8 is a side view of a conventional truck, Figure 8 is a side view of an embodiment of the present invention, Figure 4 is a perspective view of the anti-snaking device, and Figure 5. 4 is a plan view explaining the operation, FIG. 6 is an operation diagram, and FIG. 7 is a curve diagram showing the relationship between the rotation angle and torque of the truck. In the figure, (5) is the axle, (I is the truck, (6) is the car body, σc9 is the pillow spring, and a
η is a torsion shaft, 轡rI'i first link, H is a first lever, 4 is a third lever, 1241 is a connecting mechanism, @ is a friction body, and 4 is a support member. In addition, the same symbols in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] A torsion that is arranged approximately parallel to the axle of the gear and at a predetermined distance from the center of rotation of the trolley, has a predetermined diameter at both ends of the predetermined length portion that is smaller than the diameter of the central portion, and has a predetermined rigidity. A shaft, a pair of first links having one end fixed to each end of the torsion shaft, one end rotatably pivoted to the other end of each of the first links, and the other end fixed to a predetermined position of the truck. a pair of first levers rotatably supported around a position; a pair of second levers each having one end rotatably attached to both ends of the torsion shaft; A connecting mechanism connected to the other end and configured to move the second levers in opposite directions, one end rotatably connected to both ends of the twisting shaft, and the other end disposed on the trolley. A snaking motion prevention device for a railway vehicle, comprising: a friction body supported by a predetermined frictional force between a pillow spring and a car body; and a support member connecting the torsion shaft and the car body so as to be able to come into contact with and separate from the car body.