JPS62101575A - Truck for railway - 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 [Industrial Application Field] The present invention relates to a railway bogie having one or two axles and a bogie frame, and particularly to a railroad bogie having automatic steering performance on curved roads.

[Conventional technology]

In a general bogie where multiple axles are held parallel by the bogie frame, the distance between the axles (wheelbase distance) is as shown in Figure 2.
When this truck travels on a curve of radius R, the direction of the wheels does not coincide with the direction of the curve and makes an angle of at least π with respect to the rail. As a result, especially when driving around small radius curves,
Slippage occurs between the wheels and the rails, generating large lateral pressure and intense squealing noise. As a result, both the wheels and rails wear out, shortening their lifespan, and risking derailment due to greater lateral forces. In order to solve this problem, it has been proposed to have the wheel axle itself steer so that an angle like the above-mentioned i does not occur between the wheel and the rail. In order for the wheel set to steer itself, it must be supported so that it can rotate horizontally. On the other hand, various forces act on the wheel axle from the rails to the left and right wheels. One is the longitudinal force that acts in the direction of travel, and the factors include propulsive force for self-propulsion, braking force for decelerating and stopping, etc., and the other is lateral force in the direction perpendicular to the direction of travel. The causes of this include those generated to guide the vehicle, as well as those caused by centrifugal force and crosswinds when driving on curved roads. Having the wheel axle take the rudder means that when lateral pressure is generated, the structure is such that the steering is done in a direction to reduce it. If this happens, the wheel axle will rotate horizontally, causing unnecessary lateral pressure, which is inconvenient. In a normal vehicle, the left and right wheels receive longitudinal force (propulsive force and braking force are forces generated from the wheels in terms of the power path, but we are thinking about the reaction force acting on the wheels from the rail). are equal values. Under this condition, in order to prevent horizontal rotation of the wheel set, the center of rotation of the wheel set where longitudinal force is transmitted directly or indirectly must be located at an equal distance from the left and right wheels, that is, on a line passing through the center of the wheel set. will be established. That is, since equal forces act in opposite directions and at equal distances, a structure that does not generate a moment of horizontal rotation is required. In the present invention, a device having this function is referred to as a wheel-shaft coupling device.

To steer the wheel axle, each wheel axle can be steered independently using only the effect of the wheel tread slope, or, for example, with a two-axle bogie, the two wheel axles can be steered equally and in opposite directions. , it is conceivable to relate this to the steering view of the wheelset, which would theoretically make it ride on a perfect circle. In the present invention, a device having this function is referred to as a wheel-shaft coupling device.

The purpose and effects of this wheel-shaft coupling device will be explained in the embodiments described later.

Examples of cases where steering is possible include (a) JP-A-55-29092/Railway vehicles (b) JP-A-57-7756 “Railway vehicle bogie (el) JP-A-58-183344 A two-axle bogie for railway vehicles has been proposed.Unexamined Japanese Patent Publication No. 55-29 (I92) is schematically shown in Fig. 3, but a hydraulic actuator A
It has a large number of wheels and is forcibly controlled so that the direction of the wheels matches the direction of the curve, requiring highly functional parts and cannot achieve high reliability unless sufficient maintenance is performed. It also has the disadvantage of high production costs.

The inter-wheel axle coupling device has a center of rotation directly on the axle center line at the center of each wheel axle, and the inter-wheel axle coupling device uses a hydraulic cylinder.

JP-A-57-7 according to the partially cutaway plan view of the trolley shown in Figure 4.
It shows the structure of the one published in No. 756. The wheel shaft has a direct pivot structure that allows for horizontal rotation on the C top.
For the axle box 100, the longitudinal member 101. The T-shaped member 102 is connected, the member is extended to the pivot portion C, and the bogie frame 10 is assembled.
From 3 onwards, an extension beam 104 is installed to create a pivoting part. A wheel-shaft coupling device is constructed by providing structural members that are not present in these general bogies. That part is indicated by diagonal lines.

Since propulsion force and braking force also act on the members 101 to 104, they are large structural members, and this device has drawbacks such as being bulky, heavy, and expensive to manufacture. The coupling device between the two wheel axles that makes the amount of horizontal rotation of the two wheel axles equal and in opposite directions is composed of small members such as a connecting member 105 and a lever 106, and has a simple structure. lever 206
The center thereof is pivotally connected to the bogie frame 103.

The structure of Japanese Patent Application Laid-Open No. 183344/1983 shown in Fig. 5 has a structure in which the bogie frame itself is bent at the center, and it has both the necessary functions of the wheel-shaft coupling device and the necessary functions of the wheel-shaft coupling device. Although the structure is simple, it has the drawback that the bearings and other structural members are large and the weight is large.

[Problem that the invention seeks to solve]

As seen in the three cases mentioned above, it has been proposed to provide a function for steering a wheel axle (consisting of an axle and wheels fixed to the axle) in order to travel on curves with a small radius. However, each of these proposals has practical problems such as reliability, manufacturing cost, and heavy weight. The present invention has been made to solve these problems, and the purpose of the present invention is to add only a few mechanisms to an ordinary, extremely common bogie, and to reduce the lateral pressure that occurs even on curves with a small radius. It should be small, make no squeaky noise, and reduce wear on wheels and rails. Another object of the invention is to improve stability during high-speed running. Still another invention simplifies the structure of the truck by sharing one left-right member for two wheelsets.

[Means for problem solving]

The structure of the present invention is that two wheels are spaced apart from each other on the left and right with respect to one wheel axle.
The axle box is movable in the front-rear direction with respect to the bogie frame, and the wheel shaft, which is restrained in the left-right direction, can be rotated horizontally, and the axle box is pivotably supported on the bogie frame so as to be rotatable about the horizontal left-right direction as a rotation axis. and a connecting member that connects to each axle box at a position above the center of the rotation shaft at one end of the left and right direction member and at a position below the center of the rotation shaft at the other end of the left and right direction member. By having a wheel axle coupling device, the wheel axle is supported horizontally rotatably with respect to the bogie frame.

Still another configuration of the invention is that a bogie having two wheel axles is provided with two sets of inter-wheel axle coupling devices having the configuration of the invention, so that the horizontal rotation of the two wheel axles is equal and the direction of rotation is opposite.
A wheel-shaft coupling device is provided to couple the left and right members.

In addition, another configuration of the invention is that in a truck having two wheel axles, one wheel axle has two wheel axles in one bogie, and two axle boxes are provided with an interval on the left and right sides of the one wheel axle, The axle box is movable in the front and rear directions with respect to the bogie frame and is restrained in the left and right directions,
Each of the wheel axles is horizontally rotatable, and a left-right member is rotatably supported on the truck frame with the horizontal left-right direction as a rotation axis, and the left-right member is connected to each of the axle boxes. An inter-wheel axle coupling device is provided for the two wheel axles consisting of a connecting member, and the connection between the left and right direction member and each axle box by the connecting member is structured such that the horizontal rotation of the two wheel axles is equal and the direction of rotation is opposite. It is something.

The above is a means to solve all the problems mentioned above.

[For production]

Generally, railway wheels have sloped treads.

When a wheel axle consisting of two wheels and an IT shaft is displaced laterally with respect to the center of the track, the tread of the wheel on the side displaced in the direction where the flange and the rail approach comes into contact with the rail at the larger diameter point, The tread of the other wheel contacts the rail at a point with a smaller diameter, and a force acts between the two wheels that pulls the wheel axle back to the center of the track. When a wheel axle enters a curved road from a straight road, it deviates from the center of the track and is displaced toward the outer rail of the curved road, so that the outer wheels on the curved road have a larger diameter and the inner wheels have a smaller diameter. The situation is shown in Figure 6, and D2<
D. Since 1g wheels attached to the same axle rotate in the same way, the wheels on the outside of the curved road move forward than the wheels on the inside of the curved road, and this axle takes the rudder so that the direction of the wheels is tangential to the curved road. acts to match.

In order for the wheel axle to automatically steer itself in this way, it is necessary that the axle box, which is the connecting part, be able to rotate horizontally with respect to the bogie frame and move in the front and rear direction. The box is movable in the front and back direction, supported so as to be restrained in the left and right directions, and the wheel axle automatically steers. Figure 6a shows how the ship is steered.

The front and rear spacing of the axle box changes, becoming E on the outside of the curve and F on the inside, allowing the wheels to follow the curve. However, if the wheel axle is only free in the longitudinal direction with respect to the bogie frame, horizontal forces such as brakes acting on the wheels will not be transmitted to the bogie frame, and the bogie will not function as a bogie.

In the present invention, this problem is solved by connecting the left-right direction member and the wheel axle with a connecting member. FIG. 1 is a perspective view showing an embodiment of a wheel axle coupling device which is an important element of the present invention, and the operation of the wheel axle will be explained according to this diagram.

[Embodiment 1] The axle 1 and the wheels 2R, 2L constitute a wheel axle, and the axle boxes 3R, 3L are provided at both ends of the wheel axle. 6L, and rotates about the horizontal left-right direction XX as a rotation axis. There is a joint portion 7R at a distance a above the shaft support point 6R, and a joint portion 7L is located at a distance a below the other shaft support point 6L. The connecting portion 7R is connected to the axle box 3R by a beam-like connecting member 9, and the connecting portion 7L is connected to the axle box 3L by a beam-like connecting member 10. When a force is applied, a force P is transmitted to the connecting portion 7R through the axle box 3R and the connecting member 9 on one side, and to the connecting portion 7L through the axle box 3L and the connecting member 10 on the other side.

The left-right direction member is supported pivotally at pivot points 6R and 6L, and the connecting portion 7 is located at a position a above the pivot point 6R.
Since a horizontal force P in the same direction acts on R and the connecting portion 7L located below the pivot point 6L, the left-right member 4
The moment PXa that tries to rotate the connecting part 7R
Since the directions are opposite on the side and the connecting portion 7L side, they are balanced. Therefore, the left-right direction member 4 remains stable, and the reaction force P of this moment generation acts on each of the shaft supports 6R and OL, and the force from the wheels is transmitted to the bogie frame.

This force and moment balance and force transmission are the same when the wheelset steers on a curved road, and the left-right member 4 rotates and tilts as shown by the two-dot chain line in Fig. 1. . Even in this state, the moment due to the horizontal force from the wheel treads is balanced, and the force is stably transmitted to the bogie frame. In this figure, the axle 2R side is on the inside of the curve.

In this embodiment, the left-right main member of the left-right member 4 is as follows:
It passes through a position below the rotation center XX. This is the shape when the main members of the bogie frame are avoided. The role of the left and right members is to transmit the torsion moment between the right end and the left end, and the function is the same no matter where the member is placed vertically. It is something.

In addition, in the state shown by the two-dot chain line, as the left-right member 4 rotates, the connecting portion 7R above the shaft fulcrum 6R is displaced by δ in the direction away from the wheel axle, pulling the wheel axle tip, and moving the shaft fulcrum 6R.
The connecting portion 7L below L is δ in the direction approaching the wheel axle.
Displace and push the wheel set. Since both ends of the wheel set are displaced by equal amounts in opposite directions, the wheel set is horizontally rotated about its longitudinal center, resulting in a railroad bogie in which steering is automatically performed.

In addition to such a wheel axle coupling device, a wheel axle coupling device that associates the steering of two wheel axles is added to obtain a railway bogie that has highly stable self-steering performance.
Furthermore, in the case of obtaining a railway bogie having self-steering properties with a simplified structure by making one left-right member, which is a main member, correspond to two wheel sets in the configuration of two wheel sets, the following embodiments will be described. This will be explained in detail in .

[Example 2] FIG. 7 is a plan view showing an embodiment of the present invention.

The axle with the axle 1 and the wheels 2 is connected to the left-right members 4a, 4b by means of axle boxes 3R, 3L and connecting members 9,10. Its structure is the same as that shown in FIG.
, 4b, the connecting member 9 is connected upward, and the connecting member 1o is connected downward. The axle boxes 3R, 3L are supported on the truck frame 12 by an axle box guard 11 so that their protruding portions 3P are movable in the front-rear direction and restrained from displacement in the left-right direction.

Accordingly, in the present invention, two sets of wheel axle coupling devices shown in FIG. 1 are provided in one bogie without any relation to each other, and each wheel axle performs its own steering function. Even when there are differences in the dimensions and shapes of the wheel treads between the two wheel axles, the system naturally and appropriately steers the vehicle without strain. As a result, there will be a slight difference in the steering amount ζ of each wheel set. The steering condition of the bogie is shown in the figure by a two-dot chain line. By rotating the left-right member 4a in the direction of the arrow, the connected connecting member 9 is displaced to the left and the connecting member 10 is displaced to the right.
The wheel set 1 rotates horizontally with its center 0 point as its center of rotation, and performs a steering action. The members associated with the left-right member 4b+ have the opposite effect. (In this case, the planar shape formed by the wheel shaft, the connecting member, and the left and right direction members is slightly different from that of a parallelogram. The method of ball join l-, or one or more, as shown in FIG. 16, is selected.

Further, although this differs depending on the bearing structure used in the axle box, a gap of ζ is required between the axle box guard 11 and the protrusion 3P of the axle box. Also, referring to FIG. 15, it can also be used as an axle box guard with no gaps, which will be described later.

8 to 11 show an embodiment of the second invention.

FIG. 8 is a plan view showing the entire truck, in which the device shown in FIGS. 9 and 10 is attached to the part indicated by A.

FIG. 9 is a longitudinal sectional view showing an example of a link device, in which the left and right members 4a and 4b have arms 17a and 17b, respectively.
are attached, and their arm tips are connected by a link 18. With this structure, the rotation angles of the left and right members 4a and 4b are regulated to be equal and in opposite directions, and the steering amounts of both wheel axles are also equal. This has the effect of easily achieving a steering condition in which both wheel axes are equal on a circular curve.

Figure 10 has the same purpose and effect as Figure 9,
8 is a vertical cross-sectional view showing another mechanism attached to the part A in FIG.
, 19b are attached, and the ends of these arms are, for example, rubber 21., shown in FIG. Outer cylinder 22. They are directly connected via a rubber bush 20 consisting of an inner cylinder 23.

The mutual displacement between the outer cylinder and the inner cylinder of the rubber bushing 20 due to the arcuate movement of the tip of the arm can be achieved, for example, by setting the arm length to IQOnm, the rotation angle to 3 degrees, and the left-right direction member itself being provided at the center of its rotation axis, so that there is no mutual displacement. When set to 0, the amount of displacement is 100
m X (1-eos3°) - about 014 dragons, arm j
Mutual displacement of both 9a and 19b) or 0.14X 2=
028-, and when the rubber thickness is 10 mm, the amount of distortion of the rubber is m=28%, and it can be deformed without difficulty. Also, it is a rubber with a side shape as shown in Fig. 11, which is hard in the vertical direction, that is, the z-z direction, and hard in the horizontal direction, that is, the y-y direction.
Use a soft material in the direction 1. If N, the influence of distortion can be further reduced. In the rubber bush, the outer cylinder is fixed to one arm, and the inner cylinder is connected to the other arm with a pin or the like.

On a straight track, if a general railway wheel set, in which wheels with conical tread shapes are arranged on the left and right, is offset from the center of the track, for example, the right side of the diagram in Figure 6 (when it is offset, it is The working diameter of the right wheel is the working diameter D2 of the left wheel.
Due to the larger distance, the right side moves forward, steering of the wheel set occurs naturally, and the wheel set moves towards the center of the track (.

When it returns to the center of the orbit, there is still some steering action left, and there is also inertia in that direction, so it goes too far past the center and shifts to the left. This time, the radius of action of the left wheel becomes larger and it steers in the opposite direction, moving to the right. This is repeated continuously in this way. This is the snake behavior when only the wheelset moves freely. On the other hand, if there are multiple wheelsets and the steering is associated with them, the situation will be different.

For example, if you have two wheel sets as in the embodiment shown in Figure 8, and the steering is related to equal amounts and opposite phases, when the front wheel set steers to the right, the rear wheel set steers to the left. Since the two wheels mutually act to suppress meandering, the amount of lateral movement of the entire bogie is less than the meandering of free rolling of a single wheel axle, and
The meandering wavelength becomes longer. Regarding the meandering wavelength, refer to page 23 of ``Vibration of RI Vehicles and New Bogies'' published by Electric Vehicle Research Group.

As the meandering wavelength becomes longer, the traveling speed at which intense vibrations occur which coincide with the natural vibrations in the left and right directions of the vehicle increases, and if it is set outside the range of actual driving, instability will not occur during actual driving. To give a numerical example, the maximum actual driving is 1
00knha, if the matching speed of the meandering wavelength and the natural frequency in the left-right direction of the vehicle is set to about 150km/h, 150km/h>1100k/hxJ, and resonance can be avoided. (The response to the excitation width when the excitation frequency is changed in a vibration system with - degrees of freedom is theoretically infinite at the resonance point, and from the resonance point to the resonance frequency times 1° or more, it is 8 times In the above, it is less than 1,
It is known that as the excitation frequency becomes higher, the value becomes smaller. See Kyoritsu Shuppan "Basic Vibration Science" p. 49. )
By associating the steering of both wheel axles as in this embodiment, the wavelength of snaking behavior becomes longer than in the situation where each wheel axle is steered individually, and the effect of increasing running stability even at high speeds is achieved.

[Embodiment 3] FIG. 12 is a perspective view showing a specific embodiment of the third invention, with the wheel set removed.

A trunnion 41 is attached to the truck frame 40, and supports a left-right member 43 using the shaft portion 42 of the trunnion as a pivot point. The axle boxes 44R and 44L each have a connecting member 41
JB and 401J are connected to the left-right direction member 43, and the axle boxes 45R and 45L are connected to the respective connection members 47U and 47B.
It is coupled to the left-right direction member 43 by. Note that the connecting member with the subscript U is the shaft portion 4 of the trunnion of the left-right member 43.
The connecting members with the suffix B are pivotally connected to each other by rubber bushings 48 above 2 and rubber bushings 49 below the shaft portion 42 of the trunnion of the left-right direction member 43, thereby allowing steering displacement.

In addition, each axle box and each connection member each have four bolts 5.
They are joined together by 0.

According to this embodiment, there is one left-right member for the two wheel axles, and the overall structure of the truck is simplified without providing an inter-wheel axle coupling device.

51 is the shaft box rubber, which is soft in the vertical direction 1 and the front-rear direction;
It has a hard characteristic in the left-right direction, and supports the axle box on the bogie frame in the left-right direction without impeding the shock-absorbing effect of the shaft spring 52 and without resistance in the front-rear direction when steering. This has a structure similar to that of the embodiment shown in FIG. 15, and has the advantage that there are no worn parts.

53 is a seat for the secondary spring provided on the bogie frame 40, and 54 is a cross beam forming the bogie frame, which is constructed using pipe material.

FIG. 13 is a plan view showing another embodiment of the third invention.
2, when the axle boxes 31R, 31L and 32R, 32L cannot be arranged symmetrically, the left-right direction member 33
is provided in the center so as to correspond to two wheel axles, and is supported by the bogie frame 35 at shaft supports 34R and 34L at both ends, and connecting members 31S, 31T and 32S,
32Tlζ connects each axle box. The state of the connection is shown in FIG. 14.

FIG. 14 is a common view of the M arrow view and the N arrow view in FIG. 13, and the N arrow view is indicated by the number ieN.

The coupling positions are above h1 and below h2 from the pivot point 34. The horizontal position of the axle box is: b2=h,
:h2, so that a stable balance can be maintained with the acting force shown by P in Figure 1.

FIG. 15 is a plan view showing an embodiment of an axle box chamber used in the present invention, where 36 is an axle box, 37 is an axle box chamber provided in the bogie frame, and there is a barrier between the axle box chamber 36 and the protrusion 38 of the axle box 36. A swinging rubber 39 is provided. The anti-vibration rubber of the example has a multilayer structure, and is very hard in the compression direction y-y, zunao), and left-right direction, and is very hard in the shear direction x-x.
In other words, C is extremely soft in the front-rear direction, and the axle box can be moved in the front-rear direction (χ-x), but is substantially restrained and supported in the left-right direction (y-y). Become.

Although the axle box chamber 11 and the axle box protrusion 3P are shown to be in rigid contact in FIGS. 7 and 8, they can be replaced with the structure shown in FIG. 15.

[Embodiment 4] Figure 16 is a schematic perspective view showing an embodiment using the present invention, in which a two-axle bogie with a large wheelbase and a two-axle bogie with a small wheelbase are stacked to form one four-axle bogie. However, there is only one horizontal member for the four wheel axles, and one bogie has 24 to 27 four members.
There are two wheel sets, equally spaced apart, and each wheel set has its own axle box labeled R and L at each end. Only one left-right direction member 28 is provided at the center so as to correspond to the four wheel axles 24 to 27, and is supported by the bogie frame 30 at both ends at pivot points 29R and 29L. lpl from the pivot point,
The axle box 24R of the wheel axle 24 at the position is the axle fulcrum 29RJ,
17 The shaft M24L is connected to a point 1 distance downward from the connecting member 24S, and the shaft M24L is connected to a point 1 distance upward from the shaft fulcrum 29L by the connecting member 24T, and is located 1-4L from the shaft fulcrum. The axle box 25R of the wheel axle 25 is connected to the axis T125L at a point located a distance h below the axle fulcrum 29R and the connecting member 255.
is connected to a point at a distance h above the shaft fulcrum 29L by a connecting member 25T, and the wheel axles 2ft and 27 are also connected symmetrically and in the same manner. In addition, in the case of equally spaced wheelbases as in this embodiment, h: i-1 - I4. Repair L1, that is,
3:1, then each of the four wheel axles is displaced by 1 δ, or δ/2, as shown by the arrow, and each wheel axle can be steered on the same curved road. .

Even if the wheel sets are arranged at unequal intervals, by correcting the relationship between h and i to the ratio of the distance to the wheel sets, the wheels can be placed in good condition on the same curved road. In multi-axle carts,
Providing left and right members for each wheel axle complicates the structure, and in some cases makes it impossible to arrange them due to volume. However, by utilizing the present invention, this complication can be avoided, and in addition to making it easier to pass through curves, the above-mentioned original Let's achieve the goal.

〔Effect of the invention〕

As detailed above, the present invention is based on the above-mentioned Japanese Unexamined Patent Publication No. 55-2
Does not require highly functional parts as in Publication No. 9692,
Unlike in JP-A-57-7756, it is not necessary to install a new member for the horizontal rotational pivoting of the bogie frame and wheel shaft in a place where there is no structure as a normal bogie frame, and it is also possible to
A large space and weight are not required for the components and bearings for refraction as shown in Japanese Patent No. 3344. According to the present invention, self-steering performance can be added by simply adding a mechanism consisting of a left-right direction member, a connecting member, etc. to a general truck,
This allows for small radius curves with low lateral force generation, no squealing noise, and less wear on wheels and rails.
It has the effect of

Another invention has the effect of providing stable running even in high-speed ranges by adding a mechanism that equalizes the steering amounts of a plurality of wheel axles.

Furthermore, the structure of the truck can be simplified by using only one horizontal member, which is a rudder and a functional member, in contrast to the two wheel axles of other inventions.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the configuration of a force transmission mechanism, which is an important element of the present invention, and FIG. 2 is an explanatory diagram when a conventional general bogie travels on a curve with a radius R. Figures 3 to 5 are explanatory diagrams of the conventional example, Figure 6a is an explanatory diagram of the state in which the wheelset is steering, and Figure 6 is an explanatory diagram pFJZ diagram showing the relationship between wheels and rails on a curved road. 8 is a partially cutaway plan view of an embodiment of the bogie according to the present invention, FIG. 8 is a partially cutaway plan view of the embodiment according to the second invention, and FIG. 9 is a partially cutaway front view showing an example of a link device. 1θ is a partially cutaway front view of another device attached to the embodiment of FIG. 8, FIG. 11 is a front view of the rubber bushing, FIG. 12 is a perspective view of the third embodiment of the present invention, and FIG. The figure is a plan view showing another embodiment of the third invention, FIG. 14 is a side view of the same, FIG. 15 is a sectional view of the axle box valve, and FIG. 16 is a schematic perspective view of an embodiment using the present invention. It is. 1 ・Axle, 2R, 2L Wheel, 3R, 3L-・
Axle box, 3P protrusion, 4.4a, 4b...Left-right member y 5 R-5L End of left-right member, 6R, 6
L: shaft fulcrum, 7R, 7L: connecting portion, 9.10: connecting member, 11: shaft box valve, 12: bogie frame. 17a, 17b-7A, 18-link, 19a
, 19b-7A. 209. Rubber bushing, 21 rubber, 22, outer cylinder, 23
...Inner cylinder, 24~2?12 wheel axle, 24R, 24L,
25R, 25L, 28R, 2BL, 27R, 27
L□=Axle box, 245.24T, 255.25T,
285.2BT, 275.27T・Connection member, 28・
-・Left-right direction member, 29R, 29L-・Axis fulcrum,
30...Bogie frame, 31.32... Wheel axle, 31R, 3
1L 32R, 32L...Axle box, 31S, 31T
, 325.32T connecting member, 33. left and right members,
34R, 34L...Axle fulcrum, 35.Bogie frame, 36.Axle box, 32.Axle box valve, 38.Protrusion, 39.Vibration isolating rubber. 40 units JJf frame, 41-・I. Runion, 42・-
Trunnion shaft portion, 43 Lateral member, 44R,
44L, 45R, 45L・, Axle box, 4 [IU, 4
68.47U, 47B series connection member, 48.49 Mountain rubber, Soshu, 51 Shaft box valve rubber. Patent Applicant: Kawasaki Heavy Industries, Ltd., Figure 7, Figure 8123, Figure 9, Figure 10, Figure 11, Figure 13. No. 2, Name of the invention Railway bogie 3, Relationship with the case of the person making the amendment Patent applicant (097) Kawasaki Heavy Industries Co., Ltd. 4, Agent voluntarily 6, Subject of amendment ＼ :, / l Specification No. 6 Corrected "C heaven" in the 11th line of the page to "0 points". 2. On page 7, line 10, added ``of the bending part'' before ``bearings...''. 3. Amended "possible" in line 16 of page 10 to "it seems possible." 4. On page 15, lines 13-14 of the same, "Ball joint or the method shown in Figure 16 is selected." was corrected to "Ball joint, etc. is selected." 5. On page 21, line 18 of the same, "the present invention is capable of..." is amended to "the present invention and others...". 6. In the same page, page 24, line 15, "multiple" was corrected to "two." ? , corrected Figure 1 as shown in the attached sheet. (Correction of code 7 and 7L) That's all

Claims (3)

[Claims] (1) Two axle boxes are provided at intervals on the left and right sides of one wheel axle, and the axle boxes are movable in the front and rear directions with respect to the bogie frame and restrained in the left and right directions, allowing the wheel axle to rotate horizontally, and A left-right member is rotatably supported on a truck frame with the direction as a rotation axis, and one end of the left-right member is above the center of the rotation axis, and the other end is below the center of the rotation axis. A railway bogie characterized by being provided with a wheel axle support device consisting of a connecting member that connects each axle box. (2) One bogie has two wheel axles, and two axle boxes are provided at intervals on the left and right sides of the one wheel axle, and the axle boxes are movable in the front and rear directions with respect to the bogie frame and restrained in the left and right directions, and each wheel axle is a left-right member that is rotatably supported on the truck frame so as to be rotatable about the horizontal left-right direction as a rotation axis;
A wheel axle support device is provided for each wheel axle, which comprises a connecting member that connects to each axle box at one end of the left-right member at a position above the center of the rotating shaft and at the other end at a position below the center of the rotary shaft. A railroad bogie, characterized in that it is provided with an inter-wheel-shaft coupling device that couples two left-right members such that the two wheel shafts horizontally rotate by the same amount and rotate in opposite directions. (3) One bogie has two wheel axles, and two axle boxes are provided at intervals on the left and right sides of the one wheel axle. A connection that connects the left-right member and each of the axle boxes by providing one left-right member that is rotatably supported on the truck frame so as to be rotatable about the horizontal left-right direction as a rotation axis. A wheel axle support device for two wheel axles consisting of a member is provided,
A railway bogie characterized in that the connection between the left-right direction member and each axle box by the connection member is such that the horizontal rotation of the two wheel axles is equal and the rotation direction is opposite.