JPH11208470A - Bogie for rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To establish a smooth running of a bogie for rolling stock by reducing the unsprung weight for lessening of vibrations and impacts at running and directing the axle toward the center of the curvature when the bogie is passing along a curved track. SOLUTION: Motors 3 to directly drive an axle 2 are installed in front and in the rear of a vehicle body at a certain spacing from each other, and a pair of beam members 5a are extended at a certain spacing in the direction of sleeper from the outer cylinder 3a of each motor 3 in such a way as confronting in the direction of rail, and each pair of beam members 5a opposing in the center of the bogie are connected rotatably in the direction of rail with pins 6 in the direction of sleeper so that a pair of beams 5 in the direction of rail are formed, wherein each pin 6 is equipped with a vertically directed link 7 in such a way as rotatable in the direction of rail, and the links 7 are connected with the vehicle body 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a bogie for a railway vehicle.

[0002]

2. Description of the Related Art A general bogie for a railway vehicle has a bogie frame composed of a pair of side beams extending in a rail direction and a cross beam in a sleeper direction, and an axle box and a bogie frame for rotatably supporting both ends of an axle. And a pillow spring device is provided between the vehicle body and the bogie frame, and is provided on the bogie frame when a motor is mounted.

[0003]

However, if the above-mentioned structure is applied as it is, the beam corresponding to the side beam of the conventional structure receives the main motor or the brake load, and therefore has sufficient strength to withstand the bending moment generated. And a considerable cross-section is required, so that there is a problem that the weight increases. In addition, when the bogie passes through the curve, it is desirable that the axle is directed toward the center of the curve. However, in the above-described structure, since the horizontal displacement of the shaft spring device disposed between the axle box and the bogie frame is sufficient, Was not.

[0004] Therefore, the present invention is to reduce the unsprung weight to reduce vibration and impact during traveling, and to enable the truck to smoothly travel with the axle directed toward the center of the curve when the truck passes through the curve. It is intended to provide.

[0005]

In order to achieve the above-mentioned object, a railway vehicle bogie according to the present invention is characterized in that, in the means of claim 1, two electric motors for directly driving the axle are spaced apart in the longitudinal direction of the vehicle body. Arrange, extend a pair of beam members facing each other in the rail direction at an interval in the sleeper direction from the outer cylinder of each motor, and each of the two beam members facing the center of the bogie with pins in the sleeper direction In addition to forming a pair of beams in the rail direction by rotatably connecting in the rail direction, a vertical link is provided on each pin so as to be rotatable in the rail direction, and each link is connected to the vehicle body. The means of claim 2 is characterized in that a cushioning material such as rubber is provided between the outer cylinder of the electric motor and the pair of beam members. It is characterized by being connected by beams in the directions.

According to a fourth aspect of the present invention, the link is divided and connected so as to be rotatable in the direction of the sleeper with a pin in the direction of the rail, so that the movement of the bogie and the vehicle body in the direction of the sleeper when the bogie crosses a curve. While allowing, the pins in the sleeper direction are formed in a shape in which both ends are eccentric with respect to the center portion, and the length of each of the pair of beams is adjusted by turning the link in the rail direction when the bogie passes through the curve. 6. The truck according to claim 5, wherein the link is divided and connected so as to be rotatable in the direction of a sleeper with a rail-direction pin, so that the truck travels along a curved line of the truck. And one of the beam members connected by the pins in the direction of the sleeper is connected to the link and one of the beam members is connected to the arm by the arm, and the other of the beam members is connected to the arm by the arm. At the other end of the beam member Respectively connected at the side, by the rotation of the rail direction of the link when passing curves of the carriage,
The length of each of the pair of beams connected by the pins in the sleeper direction is relatively forcibly changed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail based on embodiments shown in the drawings. FIGS. 1 to 4 show a first embodiment of the present invention. In a bogie 1 for a railway vehicle, two electric motors 3 for directly driving an axle 2 are arranged in a longitudinal direction of a vehicle body at an interval from each other. A pair of brackets 3b, 3b are provided on the outer cylinder 3a at intervals in the sleeper direction, and the beam members 5a, 5a are respectively opposed in the rail direction from the brackets 3b, 3b via a cushioning material 4 such as rubber. Extending, two beam members 5a, 5 facing each other at the center of the bogie
a is pivotally connected in the rail direction with a pin 6 in the direction of the sleeper to form a pair of beams 5 and 5 in the rail direction, and a link 7 in the vertical direction is rotated to the pin 6 in the rail direction. Each link 7 is connected to the vehicle body 8 via a cushioning material 9 such as rubber.

Both ends of the axle 2 are rotatably supported by axle boxes 10, 10, and each axle box 2 and the vehicle body 8 are constituted by a spring device comprising a coil spring 11, an anti-vibration rubber 12 and a damper 13. And the beam members 5a, 5a
Are connected by a beam 14 in the direction of the sleeper, and the beam 14 is provided with a rod 15 connected to each axle box 2 and a brake device 16.

Also, one beam 14 and the center pin 8 of the vehicle body 8
a is connected by a traction link 17, and a stopper rubber 18 is provided on each of the beams 5, 5 toward the center pin 8a. Further, one end of the beam 5 is
And a telescopic spring 19 for fixing the other end to the vehicle body 8 and restraining the movement in the sleeper direction, respectively, is provided.
A damper 20 that fixes one end to the outer cylinder 3 a and the other end to the vehicle body 8 is disposed between the vehicle body 8 and the vehicle body 8.

The pin 6 has two ends 6 with respect to the center 6a.
b, 6b are formed in an eccentric crank shape, and the link 7 is provided at a central portion 6a of the pin 6, and one of the beam members 5
a is provided at the center 6a of the pin 6 adjacent to the link 7, and the other beam member 5a is provided at both ends 6b, 6b of the pin 6. The link 7 is divided at the upper part of the pin 6 and is connected by a pin 21 in the rail direction so as to be rotatable in the sleeper direction.

With such a configuration, the pair of rails 5 and 5 in the rail direction between the two electric motors 3 and the beams 14 and 14 in the sleeper direction are connected to the body 8 by the vertical links 7 and 7. Since the weights of the beams 5, 5 and the beams 14, 14 are also borne by the vehicle body 8 via the links 7, 7, the total weight of the beams 5, 5 and the beams 14, 14 is the unsprung weight. Vibration and impact during traveling can be reduced by reducing the unsprung weight without being added to a certain wheelset weight.

Further, by connecting the beams 5, 5 and the beams 14, 14 to the vehicle body 8 by the vertical links 7, 7, the vehicle body roll vibration is caused by the torsion of the beams 5, 5 and the beams 14, 14. Because of the restraint, the links 7, 7 can also serve as an anti-rolling device, and there is an advantage that the degree of freedom when setting the bogie spring constant in the vertical direction is increased.

Further, the movement of the bogie and the vehicle body in the sleeper direction when the bogie 1 for a railway vehicle passes through a curve is allowed by the rotation of the link 7 in the sleeper direction. At the time of passing this curve, each link 7 rotates in the rail direction, and the pin 6 is formed in a crank shape.
By turning the link 7, the beam 5 inside the curve is shortened and the beam 5 outside is lengthened, and the lengths of the pair of beams 5, 5 are relatively forcibly changed. Is turned in a C-shape in plan view, and the vehicle is steered so that the axles 2, 2 are directed toward the center of the curve when passing through the curve, thereby enabling smooth running.

FIGS. 5 and 6 show a second embodiment of the present invention, in which two opposed beam members 5a, 5a are rotatably connected in the rail direction by linear pins 30 in the direction of sleepers. Then, the vertical link 31 is formed in a box shape, and the link 31 and one of the beam members 5a are connected by the arm 32 above the beam member 5a, and the other beam member 5a is connected to the beam member 5a. 5a is connected by an arm 33 at the lower side, and as in the first embodiment, the beam 5 inside the curve is shortened and the beam 5 outside the curve is elongated by turning the link 31 when passing through the curve. The length of each of the beams 5 is relatively forcibly changed, and the steering is performed such that the axles 2 and 2 are directed toward the center of the curve when passing through the curve.

[0015]

As described above, in the bogie for a railway vehicle according to the present invention, two electric motors for directly driving the axles are arranged at an interval in the longitudinal direction of the vehicle body, and the electric motors are spaced apart from the outer cylinder of each electric motor in the sleeper direction. A pair of beam members extend in the rail direction so as to face each other, and the two beam members facing each other at the center of the bogie are connected rotatably in the rail direction with pins in the direction of the railroad tie, respectively. A pair of beams are formed, and a vertical link is provided on each pin so as to be rotatable in the rail direction, and each link is connected to the vehicle body. Since the moment generated in the beam member toward the rail direction is only zero at the front and rear centers, a light structure can be achieved. Therefore, the weight of the pair of beams in the rail direction is also borne by the vehicle body via the vertical link, so that the total weight of the beams is not added to the unsprung weight of the axle, and the unsprung weight is reduced. Vibration and impact during traveling can be reduced.

Further, by connecting a pair of beams in the rail direction by beams in the sleeper direction and by connecting them to the vehicle body by vertical links, the roll vibration of the vehicle body causes torsion of the beams in the rail direction and the beams in the sleeper direction. As a result, the link can also serve as an anti-rolling device, which has the advantage of increasing the degree of freedom when setting the bogie spring constant in the vertical direction.

Further, the vertical link is divided and connected rotatably in the sleeper direction with a rail-direction pin to allow the carriage and the vehicle body to move in the sleeper direction when the bogie crosses a curve. Direction pin is formed in a shape in which both ends are eccentric with respect to the center portion, and the length of each of the pair of beams in the rail direction is adjusted by turning the vertical link in the rail direction when the bogie passes through the curve. Since the forcible change is relatively performed, the movement of the bogie and the vehicle body in the sleeper direction during the passage of the curve is allowed by the rotation of the link in the sleeper direction. At the time of passing this curve, each link rotates in the rail direction, and since the pin is formed in a crank shape, the rotation of the link shortens the beam inside the curve and lengthens the beam outside. Then, the lengths of the pair of beams are relatively forcibly changed, the front and rear axles are rotated in a C-shape in plan view, and the steering is performed such that the axle is directed toward the center of the curve when passing through the curve, so that it is smooth. Enable running.

[0018] Further, one of the beam members connected to the link by the pin in the direction of the sleeper is above the one side of the beam member by an arm, and the other side of the beam member is below the other side of the beam member by an arm. By connecting each side, the length of the pair of beams connected by the pins in the sleeper direction can be relatively forcibly changed by the rotation of the link in the rail direction when the bogie passes through the curve. it can.

[Brief description of the drawings]

FIG. 1 is a side view of a bogie for a railway vehicle, showing a first embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is a partial cross-sectional view showing a connection state between a link and a beam member.

FIG. 5 is a side view showing a connection state between a link and a beam member according to the second embodiment.

FIG. 6 is a partial sectional view of the same.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Railroad vehicle bogie, 2 ... axle, 3 ... electric motor, 3a ... outer cylinder of electric motor 3, 5 ... rail direction beam, 5a ... beam member,
6, 21, 30 ... pin, 7, 31 ... link, 8 ... body,
8a: center pin of vehicle body 8, 10: axle box, 11: coil spring, 14: beam in the direction of sleeper, 32: arm

Claims (5)

[Claims] An electric motor for directly driving an axle is disposed at an interval in a longitudinal direction of a vehicle body, and a pair of beam members are opposed to each other in a rail direction at an interval from an outer cylinder of each electric motor in a sleeper direction. The two beam members facing each other at the center portion of the bogie are connected rotatably in the rail direction with pins in the sleeper direction to form a pair of beams in the rail direction, and a vertical link to each pin is provided. Characterized by being provided rotatably in the rail direction and connecting each link to the vehicle body. 2. The bogie for a railway vehicle according to claim 1, wherein a cushioning material such as rubber is provided between an outer cylinder of the electric motor and the pair of beam members. 3. The bogie for a railway vehicle according to claim 1, wherein the pair of beam members are connected by a beam in a sleeper direction. 4. The link is divided and connected rotatably in the direction of a sleeper with a pin in the direction of a rail to allow movement of the bogie and the vehicle body in the direction of the sleeper when the bogie crosses a curve, and in the direction of the sleeper. The pins are formed in a shape in which both ends are eccentric with respect to the center, and the length of the pair of beams is relatively forcibly changed by turning the link in the rail direction when the bogie passes through the curve. The bogie for a railway vehicle according to any one of claims 1, 2, and 3, wherein 5. The link is divided and connected rotatably in the direction of a sleeper with a rail-direction pin to allow movement of the bogie and the vehicle body in the direction of the sleeper when the bogie passes through a curved line. One of the beam members connected by the pins in the sleeper direction is connected to the upper side of one of the beam members by an arm, and the other of the beam members is connected to the lower side of the other of the beam members by an arm, 2. The length of each of the pair of beams connected by the pins in the sleeper direction is relatively forcibly changed by turning the link in the rail direction when the bogie passes through a curved line. The bogie for a railway vehicle according to any one of 2, 3 and 4.