JPS6149142B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a running device for a railway vehicle.

Generally, a bogie for a railway vehicle is provided with a core plate and side supports, so that the car body can be placed on the bogie.
The center plate constitutes the center of rotation of the bogie and the car body in the swivel direction, and also supports most of the car body load. One side support is provided on the right and left sides of the bogie to face each other with a predetermined gap, and prevents the vehicle body from falling over, and supports part or all of the vehicle body load. The bogie and car body are made to be able to slide and rotate while applying an appropriate rotational frictional resistance force, and are effective in preventing snaking, which is the biggest problem in running stability, especially in high-speed vehicles. . However, if the side supports are constructed with a short structure, they tend to generate squeaks when sliding. In addition, in general, with a bogie equipped with side supports, if the side supports support the entire load, the rotational resistance in the direction of the bogie swivel becomes too large, and the rotational resistance of the bogie when passing through sharp curves such as branching equipment becomes excessive. There is a risk of derailment due to excessive lateral pressure being applied to the wheels.

In order to prevent such an excessive increase in the rotational resistance of the cart, most of the load is supported by the core plate, and only a predetermined portion of the load is supported by the side supports. However, with such a device, it is extremely difficult and troublesome to adjust the load distribution.

To solve this problem, some vehicles use a large-diameter dish.
Figures 1a and 1b are a plan view and a side view showing an example of a large-diameter center plate type truck, in which the side supports and the center plate are integrated into one body.
The entire load is supported by this core plate. In this way, the structural part that receives the load of the core plate can be made into an endless circular structure, so that the squeak noise during sliding can be reduced. In addition, the length of the arm from the center of the core plate in the part that slides under load can be shortened, which reduces the frictional resistance of the bogie rotation and prevents the risk of derailment due to excessive lateral pressure. The plate also has the function of preventing the vehicle body, which is supported by side supports, from falling over.

Furthermore, such a large-diameter countersunk truck is generally used as a truck having a rocking pillow structure 2 for trains, etc.
In such a device, the rocking pillow itself is suspended from the bogie frame 4 by the pillow spring 3, so even if the bogie frame is displaced due to pitching of the bogie, the surface of the large-diameter plate can be easily kept in close contact. can be kept.

By the way, such large-diameter countersunk bogies are sometimes used as bogies for some low-speed locomotives, but in such cases, for example, as shown in Fig. Avoid the pillow and place the trolley frame 4
In some cases, a large-diameter core plate 5 is placed directly on top of the . However, in such a vehicle, the horizontality of the bogie underframe 4 and the horizontality of the center disk portion of the car body are not necessarily in an ideal state, and uneven contact occurs in the front and rear direction of the large diameter center disk. Disadvantages such as imbalance of axle loads occur, resulting in undesirable results such as friction of the center plate. Furthermore, in the case of large-diameter center disks, the rolling motion between the car body and bogie is restrained by the center disk sliding surface, and there is no gap or buffering capacity in the side bearings, which creates high lateral pressure on the wheels, especially at high speeds. there's a possibility that. Therefore, a bogie in which a large-diameter core plate is directly mounted on a bogie frame without rocking pillows not only fails to exhibit its original performance, but also causes various problems and is considered to be extremely difficult to put into practical use.

The present invention has been made in view of the above circumstances, and is capable of obtaining appropriate rotational resistance in a low-speed traveling bogie using a large-diameter center plate without providing a rocking pillow, and without using side supports. It is an object of the present invention to provide a running device for a railway vehicle in which a plate can be directly attached to a bogie underframe, and an imbalance in axle loads such as uneven contact of the center plate does not occur.

Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 3 to 5. Figure 3 is a plan view showing an example of a bogie without a rocking pillow using a large-diameter core plate, Figure 4 is a sectional view of the core plate part in the longitudinal direction of the vehicle, and Figure 5 is a view of the core plate metal fittings seen from below. It is. In the figure, 11 is a side beam of the bogie, and 12 is a middle beam of the bogie, which in this case is an H-shaped underframe without end beams. Reference numerals 13a and 13b are front and rear wheel axles, and 14a and 14b are drive mechanisms such as electric motors that drive the wheel axles 13a and 13b. The drive mechanism 14 is then supported by the nose portion supported by the nose receivers 15a and 15b attached to the middle beam 12 of the bogie.
It receives the torque reaction forces of a and 14b. The wheel axles 13a, 13b are axle boxes 16a, 16
b provides shock-absorbing support via shaft spring devices 17a and 17b. A large-diameter center plate 18 is disposed at the center of the middle beam 12 of the bogie frame. This large-diameter dish 18 has a slit plate 19 attached to the upper surface of a disc-shaped upper plate 18a, as shown in the cross-sectional view in FIG. The cylindrical portion 18b extends downward. The tip of this cylindrical portion 18b is formed into a stepped shape, provided with a circular fitting portion 20 and a rotating fixing portion 21, and is connected to a center plate fitting 22. This center plate metal fitting 22 is connected by a presser plate 23 and a presser bolt 24, and is assembled integrally with the upper surface plate 19a and the cylindrical portion 19b. A cushioning rubber 2 is placed on the underside of the top plate 19a.
5 is integrally provided and placed on the middle beam 12 of the bogie frame via the bottom plate 26. Below this center beam 12 are center plate supports 27a and 27b, which are the application points of the traction force.
The slotted plate 28 is slidable on the slotted plate 29 attached to the core plate fitting 22. And ribs 30 that reinforce the center plate supports 27a and 27b at the traction force application points.
is provided and connected to the center beam 12 of the bogie frame.

Further, the center plate 31 on the vehicle body side is placed on the top plate 18a and connected to the cylindrical portion 18b thereof as shown by the two-dot chain line in FIG. A slide plate 19 is provided to be slidable, and the load of the vehicle body is transmitted to the large diameter center plate. Further, a protruding portion 31a that protrudes downward from the upper center plate 31 is inserted through the cylindrical portion 18b of the upper plate 18a to transmit traction force.

The center plate fitting 22 and the circular fitting portion 20 protruding from the top plate 18a are tightly fitted as shown in FIG. 5 with the presser plate 23 removed. The circular core plate side of the rotation fixing part 21 is formed into a protrusion having an oval cross-section with a parallel shaved surface, and the center plate metal fitting side has a long hole corresponding to the protrusion and having a predetermined margin in the longitudinal direction. is forming. Therefore, the core plate metal fitting 22 and the circular large-diameter core plate 18 cannot rotate with respect to each other, are integrally assembled, and are allowed to move only in the lateral direction.

With such a configuration, the vehicle body (not shown) will be able to connect the upper surface plate 18 of the large diameter center plate 18 with the upper center plate 31 on the vehicle body side.
Supported by a. Further, since a cushioning rubber 25 is provided under the upper surface plate 18a, it has a buffering effect against impacts in the vertical, vertical and horizontal directions, and also has a buffering effect in the rolling and pitching directions. Here, if the rotational spring constant in the rolling direction is selected to be an appropriate value when the vehicle is running, the upper and
The spring constants for the downward, left/right, and pitching directions are approximately fixed. Therefore, a sufficiently soft spring constant can be obtained in the pitching direction, thereby preventing a difference in front and rear axle loads due to unevenness of the vehicle weight. In addition, the center plate metal fitting 22 is the front and rear slotted plate 2.
8, 29 allows for left and right movement, so the cushioning rubber 2
By appropriately setting the spring constant in the shear direction in step 5, it is possible to obtain a lateral buffering effect between the bogie frame and the car body without providing a special rocking pillow device between the car body and the bogie. .

Further, the upper center plate 31 on the vehicle body side is fitted into the cylindrical portion of the upper surface plate 18a through its protruding portion 31a and integrated, and furthermore, due to the spring constant of the buffer rubber 25 in the front and rear direction, almost no traction force acts on the center plate 31 and the center plate 31 is integrated with the cylindrical portion of the top plate 18a. Most of the traction force can be transmitted between the countersunk fitting 22 and the center plate supports 27a, 27b. Therefore, in the conventional large-diameter dish type bogies, the traction force transmission point is high and the axle load shift is large, which is thought to easily cause problems during traction, but according to the above embodiment, the traction force transmission point is extremely low. This is particularly effective in ensuring the performance necessary for a locomotive.

Since the upper surface plate 18a is integrally constructed with the core plate fitting 22, the slot plate 29 is attached to the core plate receivers 27a and 27b by the width of the slot plate 29 in the left and right direction.
Since it cannot be rotated in the swivel direction due to sliding with 8, appropriate rotational resistance can be provided by the friction between the cart and the car body, and harmful vibrations such as snake movement of the cart can be prevented. . In other words, according to the present application, bogies without rocking pillows generally have a low buffering capacity against lateral shocks, etc., and are unsuitable for high-speed running.Moreover, locomotives with a high center plate height and large axle load movement require a large traction force. This eliminates the disadvantage that it is not suitable for In addition, it is possible to provide an appropriate rotational resistance to the bogie, which is an advantage of a large-diameter center plate type bogie, and it also prevents the problem of parallelism between the bogie side center plate surface and the car body side center plate surface, which is a problem with bogies without rocking pillows. Problems such as uneven contact of the center plate and incorrect axle load due to this can be eliminated.

Note that the present invention is not limited to the above-mentioned embodiment, and for example, as shown in FIG. It may also be press-fitted. In addition, as shown in the sectional view shown in FIG. 7 and the assembled perspective view shown in FIG.
Fittings 32 for transmitting tractive force and preventing swivel rotation may extend from a to the front and rear of the bogie center beam 12.

As described in detail above, the present invention provides a buffer means between the large-diameter lower center plate of a large-diameter center plate type bogie without a rocking pillow device and the bogie underframe, and the large-diameter lower center plate and the bogie frame. A means for restraining in the swivel direction and the front-back direction is provided. Therefore, it is possible to provide a running device for a railway vehicle that can obtain appropriate rotational resistance and that does not cause imbalance in axle loads such as uneven contact of the core plate.

[Brief explanation of the drawing]

Figures 1a and b are a plan view and a side view of an example of a large-diameter dish type truck, Figure 2 is a perspective view of an example of a large-diameter dish type truck without a rocking pillow, and Figure 3 is a perspective view of an example of a large-diameter dish type truck without a rocking pillow. A plan view showing an embodiment of the present invention, FIG. 4 is a sectional view of the core plate part of the above embodiment, FIG. 5 is a view of the core plate metal fitting of the above embodiment seen from below, and FIG. 6 is a view of the present invention. FIGS. 7 and 8 are a sectional view and an assembled perspective view of a core plate part according to still another embodiment of the present invention. 11...Bogie side beam, 12...Bolly center beam, 13a, 1
3b... Wheel axle, 16a, 16b... Axle box, 18... Large diameter center plate, 18a... Top plate, 18b... Cylindrical portion, 22...
Core plate metal fitting, 25...buffer rubber, 27a, 27b...core plate support, 31...upper center plate.

Claims (1)

[Scope of Claims] 1. In a traveling device having a large-diameter center dish type bogie without a rocking pillow device, there is provided a top plate that receives the center plate on the vehicle body side through surface contact through a slide plate, and a central portion of the top plate. A large-diameter lower center plate consisting of a cylindrical portion into which a protruding portion that is open and projects downward from the upper center plate is rotatably fitted is arranged on the bogie underframe, and the upper surface plate of the large diameter lower center plate and the bogie underframe are connected to each other. A buffer means having a buffering effect against impacts in the vertical, horizontal, and rolling/pitching directions is provided between the large-diameter lower center plate and the bogie underframe to restrain relative displacement in the longitudinal direction and transmit traction force. 1. A running device for a railway vehicle, characterized in that it is provided with a means for restraining relative displacement in a swivel direction. 2. In what is stated in claim 1,
The lower end of the cylindrical part extending downward from the upper surface plate of the large-diameter lower center plate is fitted into the center plate metal fitting, and is received by the center plate support provided on the lower side of the center beam of the bogie via the slot plate. A running device for a railway vehicle characterized by a structure that transmits traction force by restraining relative displacement in the front-rear direction between a radial center plate and a bogie, and restrains relative displacement in a swivel direction.