JPH0487874A - Car truck - 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 Field of the Invention The present invention relates to a vehicle bogie that is applied to a so-called bolsterless bogie that is not equipped with a bolster and performs forced steering.

Conventional technology In a bogie that performs forced steering, when traveling on a curved road, the axle is moved so that the extension of the axis of the axle of the bogie that supports the vehicle body so that it can turn passes through the center of the curve radius of the curved road. By performing steering, the vehicle can travel smoothly on a curved road. In other words, the purpose of a steering bogie is to ensure running stability on a straight road, and to steer the axle on a curved road to direct the axis of the axle to the center of the curve radius of the curved road, thereby controlling the direction of the wheels and the alignment with the rail. The aim is to reduce the angle formed by the rail, that is, the attack angle, reduce the lateral pressure on the rail caused by this attack angle, and improve the passing performance on curved roads.

For example, a steering truck with a bolster is disclosed in Japanese Patent Application Laid-open No. 61-24.
Although disclosed in Japanese Utility Model Application No. 1259, and also disclosed in Utility Model Application No. 6410458 and Utility Model Application No. 64-11880,
By simplifying the configuration and reducing weight by not using a bolster,
It is desired to make maintenance easier and to perform forced steering to improve passing performance on curved roads.

Problems to be Solved by the Invention An object of the present invention is to provide a vehicle bogie that has a simplified configuration and is capable of performing forced steering to improve passing performance on curved roads.

Means for Solving the Problems In the present invention, a pair of axles are held via an axle box at the front and rear of a bogie frame on which a vehicle body is placed, and one end is attached to the axle box near both ends of each axle in the axial direction. a first and a second link for each axle, each of which is coupled to each other so as to be angularly displaceable; A lever, each of the first levers includes a first lever on which the other end portions of the first and second links are supported in an angularly displaceable manner on both sides in the axial direction with respect to the support portion, and a first lever on both sides of the bogie frame. , a second lever supported so as to be angularly displaceable, the first lever being coupled to one end of each of the second levers so as to be angularly displaceable; and a second lever that is angularly displaceably supported at one end of each second lever; , an operating link whose one end is angularly displaceably connected; and an angularly displaceably supported operating link provided on both sides of the vehicle body, and whose one end is angularly displaceably connected to the other end of the operating link. and an actuating rod connected to the other end of the third lever so that both ends can be freely angularly displaced and the third levers can be angularly displaced in opposite directions. This is a special vehicle trolley.

Further, in the present invention, a pair of axles are held through axle boxes before and after the bogie frame on which the vehicle body is mounted, and one end of each axle is angularly displaceable in the axle box near both ends of each axle in the axial direction. A first and second link for each axle to be coupled, and a lever supported on the bogie frame so as to be angularly displaceable at an axially intermediate support portion, and provided on both sides of the bogie frame, and a lever for each lever. a lever whose other end portions of the first and second links are supported on both sides in the axial direction with respect to the support portion so as to be freely angularly displaceable; and an operating link whose one end portion is coupled to each lever so as to be movably angularly displaceable; another lever supported in an angularly displaceable manner and provided on both sides of the vehicle body, one end of which is angularly displaceably connected to the other end of the operating link; and the other end of the other lever. The vehicle trolley is characterized in that it includes an actuating rod whose both ends are connected to each other so as to be freely angularly displaceable and to angularly displace each of the other levers in mutually opposite directions.

According to the present invention, when the vehicle body and the bogie frame are mutually displaced laterally or vertically, for example, while traveling on a straight road, the other end of the second lever is not displaced; The operating link is angularly displaced about the joining position between the other end of the second lever and one end of the operating link, and at this time, the pair of third levers supported by the vehicle body are interlocked by the operating rod. angular displacement, and thus said angular displacement of the operating link is permitted. Therefore, the first and second links, the first lever, and the second lever do not displace regardless of relative displacement in the lateral and vertical directions between the vehicle body and the bogie, and therefore the axle box and axle do not move as described above. Forces due to relative displacement in the lateral and vertical directions do not act on the vehicle, improving running stability on straight roads.

Further, according to the present invention, when the vehicle travels on a curved road,
A relative angular displacement occurs between the vehicle body and the bogie frame, and this causes the pair of third levers to be angularly displaced by the same angle in conjunction with the operating rod, so that the bogie frame can be freely angularly displaced via the operating link. the supported second lever is angularly displaced;
In response, the first lever is angularly displaced, and the first and second links are also displaced, thereby displacing and steering the axle box and thus the pair of axles. This allows the extension of the axis of the axle to pass through the center of the radius of the curved road, allowing the vehicle to travel smoothly on the curved road.

As mentioned above, even if the car body and bogie frame are displaced relative to each other in the lateral and vertical directions while traveling on this curved road, no force is exerted on the axle box and therefore on the axle due to such displacement. This is the same as when driving on a straight road.

In the present invention, the second lever may be omitted and the operation link may be connected to the first lever.

Embodiment FIG. 1 is a perspective view showing the skeleton of an embodiment of the present invention during straight running, FIG. 2 is a simplified plan view of the embodiment, and FIG. 3 is a schematic diagram of the embodiment. FIG. Referring to these drawings, a vehicle body 1 is supported by a truck 2. As shown in FIG. A ground element 4 constituting a linear motor is provided between a pair of rails 3 provided along a running route on the ground. An onboard member 5 is attached to the bogie 2 opposite to the ground member 4, and provides the propulsion force for the railway vehicle to travel. A roughly H-shaped bogie frame 6 is arranged above the rail 3, and the main body 1 is supported near the center position of a pair of side beams 7 in the running direction of the bogie frame 6 via a pillow spring 8. Ru. A thrust transmission device 83 is provided at the center of the cross beam 9 of the bogie frame 6 in the width direction.

The thrust transmission device 183 has a center bin 84, an elastic body, etc., and enables relative lateral displacement and relative turning between the vehicle body 1 and the bogie frame 6, while transmitting longitudinal forces (thrust and braking force) between the vehicle body 1 and the bogie frame 6. ), and the center bin 84 is fixed to the vehicle body 1 with bolts 81, and the axis of the center bin 84 is indicated by reference numeral 64 in FIG.

FIG. 4 is a simplified cross-sectional view taken along section line IV--■ in FIG. 2. An axle 11 to which a pair of wheels 10a are fixed is supported by a bearing 12 in an elongated axle box 13a, and a shaft 14a projecting upward is formed at the axial center of this axle box 13a. This shaft 14a is inserted into a hole 16 formed in the mounting member 15. The vehicle upper element 5 is fixed to this attachment member 15. The side beam 7 is attached to the bearing box 13a near the bearing 12 via a slide plate and an elastic piece 17a made of rubber or the like. The wheel 10b is
Like the wheel 10a described above, it is supported by the bogie frame 6 via the cylindrical axle box 13b, and the other configurations are the same as those described above, and corresponding parts are designated with the same reference numerals and suffixes. Shown with a .

The thrust of the onboard child 5 is transmitted by the mounting member 15, the thrust transmission means 82,
The force is transmitted to the vehicle body 1 via the bogie frame 6, thrust transmission device 83, and center bin 84.

Near both ends of the axle 11 of the wheel 10a in the axial direction, the axle box 1
3a, one end of the first link 18.19 is connected to the joint 20.
．． They are combined at 21.

FIG. 5 is a sectional view of the vicinity of the connecting portion 2o that connects the axle box 13a and one end of the first link 18. As shown in FIG.

It is connected to the bracket 22 of the axle box 13a by a pin 24 via an elastic piece 23 such as rubber or the like reference numeral 23 or a spherical bearing so as to be freely angularly displaceable. The axis of the pin 24 is parallel to the axis of the axle 11 in its natural state. The other coupling portion 21 also has a similar configuration. The purpose of using an elastic body such as rubber or a spherical bearing for reference numeral 23 is to provide displacement for steering the axle box 13a without allowing angular displacement between the link 18 and the axle box 13a. Even when using an elastic body such as
8, it depends on the spacing between the second links 19 and the indicated rigidity in the front and rear and left and right directions of the axle box, but it is 500 to 1000.
Running stability is ensured by using an elastic body with a hard spring constant of approximately kg f/mm.

As another embodiment of the present invention, the axle box 13a and the first link 1
One end of the first link 18 is provided on the outer periphery of the axle box 13a with an elastic piece 25 interposed therebetween.

Regarding the axle box 13b of the other wheel 10b, one end portion of the second link 26, 27 is similarly connected at a connecting portion 35, 36 so as to be angularly displaceable.

The first lever 28,29 extends vertically and narrowly in FIGS. 1 and 3. An intermediate support portion 30 located midway in the axial direction of the first lever 28 is supported by the bogie frame 6 by a pin 32 shown in FIG. 3 so as to be freely angularly displaceable. The other first lever 29 is similarly supported by the bogie frame 6 at the support portion 31 so as to be freely angularly displaceable. These first levers 2829 are provided at both ends of the truck frame 6, respectively.

The support 30.31 is arranged below the first lever 28.29. The other end of one first link 18 is connected to the first lever 28 and the pin 33p in FIG.
They are connected so as to be freely angularly displaceable as shown in . Similarly, the other end of the other first link 19 is also connected to the connecting portion 3.
4, it is coupled to the first lever 29 for angular displacement.

The one end of the second link 26.27 is connected to the joint 35.36.
It is supported by the axle box 13b for angular displacement, and the other end is connected to the first lever 28 at the connecting portion 37, 38.
It is supported for angular displacement on the side opposite to the coupling part 33.34 with respect to the support part 30.31.

The second lever 40.41 is supported by pins on both sides of the truck frame 6 at its axially intermediate support portion 42.43 so as to be angularly displaceable. These second levers 40.
One end of the lever 41 is angularly displaceably coupled to the first lever 28.29 by a coupling portion 45.46 such as a spherical bearing. The other end of the second lever 40.41 has an operating link 4.
One end portion of 7.48 is coupled with a coupling portion 49.50 such as a spherical bearing so as to be freely angularly displaceable. Operation link 47°48
is placed approximately horizontally, taking into account the rolling displacement of the vehicle body.

The pair of third levers 101 and 102 are so-called bell crank levers, and are supported by brackets 105 and 106 of the vehicle body 1 by pins or the like at support portions 103 and 104. The other end of the operating link 47, 48 is connected to one end of the third lever 101, 102 by a connecting part 107, 108 so as to be angularly displaceable. This joint 107.10
8 may be a spherical bearing, for example.

Both ends of a rigid actuation rod 110 are coupled to the other ends of the third levers 101, 102 at coupling portions 111, 112, and these coupling portions 111, 112 are, for example, pin couplings. In this way, both ends of the actuating rod 110 are angularly displaceable with respect to the third lever 101.1-02, and the actuating rod 1
For example, when 10 is displaced in the direction of arrow 113, one third t<-101 is angularly displaced in the direction of arrow 114,
Another third lever 102 is angularly displaced in the direction of arrow 115, and the third lever 101, 102 is thus angularly displaced in opposite directions to each other.
102 and an actuating rod 110 are coupled.

Assume that when the rail 3 is a straight path, the vehicle body 1 moves laterally on a straight line 58a with respect to the bogie frame 6, as shown by an imaginary line 58 in FIG. At this time, the second lever 40.41 remains stationary and the operating link 47
．． 48 is angularly displaced from the state shown by the solid line in FIG. 1, as shown by the imaginary line, by an angle α1 about the coupling portion 49, 50, and the third levers 101 and 102 are accordingly angularly displaced. , the actuation rod 110 is displaced. That is, from the state where the vehicle body 1 and the bogie frame 6 are shown by solid lines in FIG.
When displaced as shown at 8, the bracket 105,
106, thus the third lever 101, 1.02 is likewise displaced, and the actuating rod 110 is accordingly displaced relative to the carriage 6 in the direction of the arrow 113. This results in an angular displacement of the third lever 101, 102 in the direction of the arrows 114a, 115a, an angular displacement of the operating link 47.48, and a second lever 40.41 which is not displaced and remains stationary.

Therefore, no force due to such lateral movement is applied to the second levers 40, 41, and the vehicle can stably travel on a straight road.

When the rail 3 runs on a circularly curved curved road, the seventh
As shown in the figure, the center position between the pair of rails 3 draws five circular arcs and has a radius R1 from the center 60 of the trajectory. In addition to the bogie 2, the car body 1 is provided with another bogie, and the distance between the bogie centers between the center bin axis of the bogie 2 and the center bin axis of the other bogie is L.
The wheel base distance of the wheels 10a and 10b is 1.
11. Perpendicular bisector 6 between center bins of vehicle body 1
1 and the straight line 62 connecting the center bin axis 64 and center 60 of the bogie 2, the car body 1 and the bogie frame 6 are
In order to improve the performance of passing the zero curve, which turns around the axis 64 of the center bin and undergoes angular displacement, the axis extension line 1 of the axle 11 is
1a and the straight line 62 must intersect near the center 60, and geometrically speaking, the axial center of the axle 68 located in the axle box 13b is The angle formed between the extension line 68a and the straight line 62 is also α3. Therefore, the angle formed by the two axial extensions 11a and 68a is 2·α3.

FIG. 8 shows the state in which the vehicle body 1 and the bogie frame 6 are relatively displaced and shifted in the lateral direction while the vehicle is traveling on such a curved road, and also turns around the center bin axis 64. The operating rod 110 changes from the state shown by the solid line in FIG. 8 to the state shown by the imaginary line 117, and the operation link 4
7.48 causes an angular displacement of the second lever 40.41 and a corresponding angular displacement of the first lever 28.29, thereby displacing the first and second links 18, 19; 26, 27.6 Vehicle body 1 When the vehicle body 1 and the vehicle frame 6 are displaced laterally, and the vehicle body 1 and the vehicle frame 6 are also displaced angularly, and the state shown by the solid line in FIG. 8 changes to the state shown by the imaginary line 117, the operation The rod 110 is displaced in the direction of the arrow 113, and the third arm L
ot, 102 is displaced as reference numerals 114a, 115a. The actuating rod 110 has great rigidity and therefore does not undergo deformation, so the angular displacement of the third levers 101, 102 is the same. It is. 1st lever 2
8 and the second lever 40 is such that the angle α3 between the straight line 62 of the truck and the axial center extension line 11a of the axle 11 is adjusted to the relative turning angle α2 (see FIG. 9) between the vehicle body 1 and the truck frame 6. I'm set up to get it. This allows wheel 1
Axle 11 axis 66 of 0a and another wheel 10b
The extension of the axis 67 of the axle allows the wheels 10a, 10b to be steered so as to pass through the center 60 of the curved road.

This reduces the attack angle between the wheels 10a, 10b and the rail 3, thereby reducing the lateral force acting on the rail 3, and improving the passing performance on the curved road even if the radius of the curved road is small. can.

In FIG. 3, the operation link 47a indicated by the chain line 1 is located at the vehicle body 1.
The figure shows the movement of the operation link 47 in a state where the frame 6 and the bogie frame 6 are simply vertically displaced relative to each other.

When there is a relative displacement in the vertical direction, the coupling part 10 of the operation link
7 moves by δ3 in the front-back direction. Also, operation link 4
8 also moves in the longitudinal direction by δ3, the third levers 101 and 102 act in the same manner as when the vehicle body 1 and the bogie frame 6 are relatively displaced in the lateral direction, and the vehicle body There is no possibility that the axle 11 will be steered due to relative displacement in the vertical direction between the bogie frame 6 and the axle 11.

In such an embodiment, when the vehicle body 1 and the bogie frame 6 turn in the lateral and vertical directions and by the angle α2, the distance between the axis of the axle 11 of the wheel 10a and the axis 68 of the axle of the wheel 10b is The wheelbase 111 is not displaced, and therefore the configuration for fixing the onboard element 5 of the linear motor to the axle boxes 13a, 13b can be simplified.

In the embodiment described above, an elastic piece 23 was used in the coupling part 20, and such a configuration was also similar in the other coupling part 21, but in other embodiments of the present invention, such an elastic piece 23 is used. 23, the connection via the other connection portion 33
, 34, 35, 3637.
．． 50 and also in the supports 30, 31, 42, 43, etc.

Another embodiment of the present invention is shown in the case of a pendulum type bogie shown in FIGS. 9 to 11. FIG. 9 is a plan view of a bogie 2a in which the present invention is implemented in a natural pendulum or forced pendulum bogie. It shows a state in which the bogie frame 6 is subjected to relative angular displacement, lateral displacement, and pendulum action. FIG. 10 is a side view of the trolley 2a,
FIG. 11 is a sectional view showing a part of the bogie 2a, showing a state in which the car body 1 and the bogie frame 6 are relatively displaced laterally and have a pendulum effect.This embodiment is similar to the previous embodiment, and corresponds to the 1. On the side beam 7 of the bogie 6, there are axle boxes 69 and 70 that respectively support the axle 11 of the wheel 10a and the axle 68 of the wheel 10b.
Supported through.

As clearly shown in FIG. 11, a roller 76 is rotatably provided on the bogie frame 6, which supports the vehicle body 1 by means of an air spring 75 with low lateral rigidity on the pendulum beam 74.
A support part 77 of the pendulum beam 74 is placed on the roller 76, and the pendulum beam 74 is supported on the roller 76, and the angle α of the vehicle body 1 is
A pendulum action takes place within the range of angles 3 and 3 and vice versa. The amount of lateral displacement δ4 of the protrusion 78 fixed to the side of the vehicle body 1 is limited by a stopper 79 erected on the pendulum beam 74. The pendulum stopper is separate. The present invention also applies to a pendulum truck having such a configuration in exactly the same way,
The first
The joints 33, 37 of the second link 18.26 and the first lever 28 are arranged below and above with respect to the support 30 of the truck frame 6 of the first lever 28. The pendulum action does not directly affect steering, and only the effect of the curve can be extracted. In the neutral position, the operating link can swing up and down, so there is no effect.

In this embodiment, the first link 1 is attached to the end of the axle box 69.
8, the upper ends of the first levers 28, 29 are located near the vehicle side of the vehicle body 1. Therefore, in the embodiment shown in FIG. 1 described above, the second levers 40, 41 are provided. However, in other embodiments, the relative angular displacement between the vehicle body 1 and the bogie frame 6 can be detected as a large amount of displacement without providing the second lever 40.41, so the second lever 40.41 is omitted.
A connecting portion 45.46 at the upper end of the first lever 28.29 is connected to one end of the operating link 47.48 by a spherical bearing or the like such that it can be angularly displaced, and a connecting portion between the other end of the operating link 47, 48 and the third lever 101 By connecting 107 in the same way as the one end side, the effects of the present invention can be obtained. in this case,
In the embodiment shown in FIG.
Set using only the lever ratio.

The present invention can be similarly implemented even if the vehicle body is placed on the bogie frame in other configurations. Furthermore, it is also implemented in connection with a truck provided with a swing pillow or a pillow support.

Effects of the Invention As described above, according to the present invention, even if the vehicle body and the bogie frame are relatively displaced in the lateral and vertical directions when traveling on straight roads and curved roads, no force is applied to the axle box and therefore to the axle. When the vehicle body and bogie frame undergo a relative angular displacement, such as when traveling on a curved road, a torsional force acts on the operating shaft, and this forces the axle box and therefore the axle to steer.
The extension of the axis of the axle is now able to pass through the center of the curved road, allowing the vehicle to run smoothly on the straight road and improving the ability to pass through the curved road.

[Brief explanation of the drawing]

FIG. 1 is a simplified perspective view of a cart according to an embodiment of the present invention, shown as a skeleton, FIG. 2 is a plan view of the embodiment, FIG. 3 is a side view of the embodiment, and FIG. Section line IV in the figure
5 is a sectional view of the vicinity of the joint 2o, FIG. 6 is a sectional view of the joint 20a of another embodiment of the present invention, and FIG. 7 is a sectional view of the vehicle traveling on a curved road. FIG. 8 is a simplified plan view showing the state when the vehicle is traveling on a curved road; FIG. 10 is a side view of the embodiment shown in FIG. 9, and FIG. 11 is a side view of the embodiment shown in FIG.
3 is a cross-sectional view of a portion of the embodiment shown in the figure; FIG. 1... Vehicle body, 2.2a... Trolley, 3... Rail,
6... Bogie frame, 7... Side beam, 8... Pillow spring, 18
．． 19...First link, 26.27...Second link, 28.29...First lever, 40.41...Second lever, 47°48...Operation link, 101,102...
...Third lever 110...Operating rod agent Patent attorney Number of strokes Keiichi

Claims (2)

[Claims] (1) A pair of axles are held via axle boxes at the front and rear of the bogie frame on which the vehicle body is mounted, and one end of each axle is connected to the axle box so as to be angularly displaceable near both ends of each axle in the axial direction. a first and second link for each axle, and a first lever supported on the bogie frame so as to be angularly displaceable at an axially intermediate support portion and provided on both sides of the bogie frame, The lever includes a first lever whose other end portions of the first and second links are angularly displaceably supported on both sides in the axial direction with respect to the support portion, and a first lever supported angularly displaceably on both sides of the bogie frame. a second lever, to which the first lever is angularly displaceably coupled to one end of each second lever; and to the other end of each second lever, one end is angularly displaceably coupled; an operating link to be coupled; a third lever that is angularly displaceably supported by the vehicle body and provided on both sides of the vehicle body, one end of which is angularly displaceably connected to the other end of the operating link; A vehicle trolley, characterized in that it includes an actuating rod connected to the other end of the lever so that both ends can freely angularly displace and angularly displace each of the third levers in mutually opposite directions. (2) A pair of axles are held via axle boxes at the front and rear of the bogie frame on which the vehicle body is placed, and one end of each axle is connected to the axle box for angular displacement near both ends of each axle in the axial direction. A lever is provided on both sides of the bogie frame and supported by the bogie frame so as to be freely angularly displaceable by the first and second links for each axle and the axially intermediate support part, and each lever includes: A lever, the other end of which is supported by the first and second links in an angularly displaceable manner, on both sides of the support part in the axial direction; and an operating link, one end of which is coupled to each lever in an angularly displaceable manner; another lever displaceably supported and provided on both sides of the vehicle body, one end of which is angularly displaceably connected to the other end of the operating link; and the other end of the other lever; 1. A vehicle bogie, comprising: an actuating rod whose both ends are angularly displaceable and which are connected to each other so as to angularly displace each of the other levers in opposite directions.