WO2005056361A1

WO2005056361A1 - Connected cars

Info

Publication number: WO2005056361A1
Application number: PCT/JP2004/018588
Authority: WO
Inventors: Yoshihiro Suda; Yohei Michitsuji
Original assignee: Yoshihiro Suda; Yohei Michitsuji
Priority date: 2003-12-15
Filing date: 2004-12-13
Publication date: 2005-06-23
Also published as: EP1705094A4; KR20070012781A; KR101152436B1; JP2005170341A; JP4389069B2; EP1705094A1

Abstract

[PROBLEMS] Connected cars satisfying both linear travelability at high speed and sharp-curve travelability at low speed. [MEANS FOR SOLVING PROBLEMS] When a train travels along a sharp curve at low speed, the motors in two electromagnetic dampers are connected in series to a common conversion circuit for conversion into thermal energy. While the train is traveling along the rails in this connected state, yawing occurs between cars (A, B). Since the electromagnetic dampers (21, 22) are compressed (expanded) by the same amount at this time, the motors rotate in the same direction, and no current flows. Therefore no damping force is generated. As a result any resistance against the yawing is present, and the yawing freely takes place. If the train meanders, one of the electromagnetic dampers (21, 22) is compressed, and the other is expanded. Therefore, the motors rotate in the opposite directions. If the motors thus rotate in the opposite directions, current flows in the circuit, the energy converted into thermal energy, and a damping force is exerted. As a result, the meandering is suppressed.

Description

Specification

Articulated vehicle

Technical field

The present invention relates to an articulated vehicle in which two vehicles are articulated back and forth.

Background art

[0002] Patent Document 1 proposes a configuration in which a bogie is arranged at a connection point between two vehicles connected in front and rear. In FIG. 6 of Patent Document 1 and related parts, a bogie is arranged at a connection portion of the front and rear vehicles, an actuator is interposed between the bogie frame of the bogie and the front and rear vehicles, and the actuator is driven. It is described that assisting self-steering is provided by this.

[0003] Furthermore, Patent Document 2 does not refer to a connection point between two vehicles connected to each other back and forth, but a single-axle truck is arranged at an end of one vehicle, and the single-axle truck and the other vehicle are connected by a link. In addition, it discloses that a damper is provided between the bearing housing of the bogie and the vehicle body to suppress the lateral movement of the bogie, thereby preventing excessive lateral displacement between the vehicle body and the wheel set.

[0004] Further, Patent Document 3 proposes an electromagnetic damper as a damper for a vehicle. This electromagnetic damper incorporates a DC (direct current) motor inside, rotates the rotor or stator that constitutes the motor by linear motion of the cylinder or swing of the arm, and converts the electromotive force generated in the solenoid by electromagnetic induction into damping force. It is configured to do.

Patent Document 1: JP-A-2002-87262 [0012], FIG.

Patent Document 2: Japanese Patent Application Laid-Open No. 2001-63567

Patent Document 3: Japanese Patent Laid-Open No. 2003-227543

Disclosure of the invention

Problems to be solved by the invention

[0006] Railway vehicles are required to have running stability and curve turning ability. However, it is difficult to achieve both running stability at high speeds and the ability to turn sharply at low speeds, and this problem will continue.

[0007] For example, in Patent Document 1, the bogie of the vehicle connecting portion is driven by an actuator so that It is possible to steer, but it cannot exert the damping effect on jogging between vehicles. Conversely, if a damper is provided instead of the actuator, the lateral pressure will increase when passing a sharp curve.

[0008] Furthermore, even if a damper for suppressing the lateral movement of the bogie is provided as disclosed in Patent Document 2, the damping effect for the joing between the two vehicles cannot be exerted. Then, what is described in the connection vehicle?

Means for solving the problem

[0009] It is an object of the present invention to achieve both running stability and sharp curve turning ability for a connected vehicle in which the joing between the vehicle bodies must be considered.

[0010] In order to solve such a problem, the present invention sets a high rigidity at the connecting portion during high-speed running or straight running, and sets a low rigidity at the connecting portion during low-speed running or curved running. The electromagnetic damper was placed at the connection between the front and rear vehicles.

The present invention also relates to a connected vehicle in which a bogie is arranged at a connecting portion of two vehicles connected to each other in front and rear, and an electromagnetic damper is provided between the bogie frame or bolster of the bogie and each vehicle. These electromagnetic dampers incorporate motors such as DC motors, and these motors can be switched to an independent external circuit for converting the electromotive force generated by electromagnetic induction into thermal energy (kinetic damping force) and an external circuit common to them It was configured to be connected to.

[0011] In the above configuration, by connecting the motors in the respective electromagnetic dampers to independent heat energy conversion circuits, the respective electromagnetic dampers individually exhibit an attenuation function. When the motors in each electromagnetic damper are connected in series to a common external circuit, no electromotive force is generated when each motor rotates in the same direction, and no electromotive force is generated when each motor rotates in the opposite direction, and current flows. Is converted to heat energy.

[0012] The switching of the circuit is performed, for example, by connecting the motors to an independent external circuit during high-speed running or straight-line running, and connecting the motors to a common external circuit during low-speed running or sharp-curve running. .

[0013] The bogie may be a single-axle bogie or a single-wheel independent rotary bogie. The form of the electromagnetic damper may be a direct-acting damper or a rotary damper, or may be shifted. The invention's effect

According to the present invention, a bogie frame or a bolster of a bogie provided at a connection point of two vehicles and each vehicle are connected by an electromagnetic damper, and a circuit to which a motor incorporated in these electromagnetic dampers is connected is as follows. Since the motor can be selectively switched to an independent external circuit for converting the electromotive force generated by rotating the motor to thermal energy, as well as to a common external circuit for converting it to thermal energy, Only when it can act as a damper.

Therefore, it is possible to simultaneously satisfy both stability in straight running at high speed and followability in sharp running.

Brief Description of Drawings

FIG. 1 is a side view of an articulated vehicle according to the present invention.

[Figure 2] Enlarged side view of the joint between the articulated bogie and the front and rear vehicles

FIG. 3 is a simplified view of the structure of FIG. 2

[Figure 4] Cross-sectional view of linear motion type electromagnetic damper

FIG. 5 is a view similar to FIG. 3 showing another embodiment.

FIG. 6 is a view similar to FIG. 3 showing another embodiment.

FIG. 7 is a view similar to FIG. 3 showing another embodiment.

FIG. 8 is a view similar to FIG. 3 showing another embodiment.

FIG. 9 is a view similar to FIG. 3 showing another embodiment.

[Fig.10] (a)-(c) is a plan view of the articulated vehicle with different running conditions

[Fig. 11] (a) shows the state in which the motors in the two electromagnetic dampers are connected to independent heat energy conversion circuits, and (b) shows the state in which the motors in the two electromagnetic dampers are connected to the same thermal energy. Figure showing the state of being connected in series to the conversion circuit of

[FIG. 12] (a) is a diagram illustrating a circuit when two motors are rotated in the same direction as each other in the connection state of FIG. 11 (b), and (b) is a connection diagram of FIG. 11 (b). Diagram illustrating the circuit when two motors are rotated in opposite directions in a state

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows the present invention. FIG. 2 is a side view of an intermediate articulated three-axle vehicle as an articulated vehicle, FIG. 2 is an enlarged side view of a connecting portion between an articulated vehicle and a front and rear vehicle, and FIG. 3 is a simplified view of the structure of FIG.

[0017] In the intermediate articulated three-axle vehicle, a single-axle truck 1 is arranged at a joint between vehicles A and B in front and behind, and single-axle carts 2 and 3 are arranged in each of the vehicles A and B. The one-axle bogie 1 of the connecting part forms a wheel axle by attaching a pair of left and right wheels 11 to an axle 10, and both ends of the axle 10 are rotatably supported by an axle box 12. A bogie frame 14 is supported via a vibration rubber 13, and a bolster 16 is supported on the bogie frame 14 via a pillow spring 15. The bolster 16 and the vehicle A are connected by a bolster anchor 17, and the vehicle A is connected to the vehicle A. It is connected to vehicle B by a center pin 18.

The bogie frame 14 and the bolster 16 are rotatably connected via pins 19. Instead of the pins 19, the bogie frame 14 and the bolster 16 may be connected via a parallel link mechanism.

[0019] Electromagnetic dampers 21 and 22 are interposed between the bogie frame 14 and the front and rear vehicles A and B, respectively. Electromagnetic dampers 23 and 24 are also provided between the bogie frames of the one-axis bogies 2 and 3 and each of the vehicles A and B. As described above, since the bogie frame 14 is rotatable relative to the bolster 16 and is connected to the vehicle by the electromagnetic dampers 21 and 22, the damping force in the rotational direction due to the expansion and contraction of the electromagnetic damper is obtained. , Snake behavior is suppressed.

As shown in FIG. 4, the structure of the electromagnetic dampers 21-24 has a piston 31 slidably mounted in a cylinder 30, and a DC motor 32, a reduction gear 33, and a ball screw 34 in the cylinder 30. , A nut 35 is incorporated, and connecting portions 36 and 37 are provided at the ends of the cylinder 30 and the piston 31. In the electromagnetic dampers 21 and 22, the connecting portion 36 is connected to the vehicle A or B, and the connecting portion 37 is provided. Are connected to the bogie frame 14, respectively.

FIG. 5 to FIG. 9 are similar to FIG. 3 showing another embodiment. In the embodiment shown in FIG. 5, the front and rear vehicles A and B are connected by a normal coupler 25. At the same time, each of vehicles A and B is supported by Bonoresta 16 at two points.

In the embodiment shown in FIG. 6, the vehicle A and the bolster 16 are connected by a bolster anchor 17, an electromagnetic damper 21 is interposed between the bolster 16 and the bogie frame 14, and the vehicle B and the bogie frame 14 are connected. An electromagnetic damper 22 is interposed between them. The embodiment shown in FIGS. 5 and 6 is a direct mount type in which the bolster 16 is provided directly on the bogie frame 14. In the indirect type embodiment shown in FIG. A bolster anchor 17 is interposed between the bolster 16, an electromagnetic damper 21 is provided between the bolster 16 and the vehicle A, and an electromagnetic damper 22 is provided between the bolster 16 and the vehicle B. The example is also an indirect system as in FIG. 7, and in this embodiment, an electromagnetic damper 21 is provided between the bogie frame 14 and the vehicle A, and an electromagnetic damper 22 is provided between the bogie frame 14 and the vehicle B. I have.

In the embodiment shown in FIG. 9, an electromagnetic damper 21 is provided between the bogie frame 14 and the vehicle A, and an electromagnetic damper 22 is provided between the bolster 16 and the vehicle B.

[0022] Fig. 10 (a) is a plan view of the articulated vehicle during straight running. In this state, the electromagnetic dampers 21 and 22 do not expand or contract. FIG. 10B is a plan view of the articulated vehicle when traveling on a curve. In this state, the electromagnetic dampers 21 and 22 are simultaneously extended or compressed. FIG. 10 (c) is a plan view showing a state in which the bogie is performing a snake action. In this state, one electromagnetic damper 21 is extended, and the other electromagnetic damper is compressed.

Next, the operation of the electromagnetic dampers 21 and 22 will be described. Fig. 11 (a) shows the state in which the motors in the two electromagnetic dampers are connected to independent thermal energy conversion circuits, and (b) shows the state in which the motors in the two electromagnetic dampers are converted to common thermal energy. FIG. 12 (a) is a diagram illustrating a state in which the two motors are rotated in the same direction, and FIG. 12 (a) is a diagram illustrating a circuit in which the two motors are rotated in the same direction. 12B is a diagram illustrating a circuit in a case where two motors are rotated in opposite directions in the connection state of FIG. 11B.

Returning to each running state in FIG. 10, when traveling straight at the high speed shown in FIG. 10 (a), as shown in FIG. 11 (a), the motors in the two electromagnetic dampers are independent. Connect to heat energy conversion circuit. By doing so, the electromagnetic dampers 21 and 22 act as independent dampers.

On the other hand, when the vehicle travels on a sharp curve at low speed, as shown in FIG. 11 (b), the motors in the two electromagnetic dampers are connected in series to a common heat energy conversion circuit. And this When the vehicle travels along the railroad in the state described above, joing occurs between vehicles A and B as shown in Fig. 10 (b). At this time, since the electromagnetic dampers 21 and 22 compress (expand) by the same amount, the motor rotates in the same direction. When the two motors rotate in the same direction, no current flows and no damping force is generated, as shown in Fig. 12 (a). As a result, there is no resistance to joing, and joing can be performed freely.

[0026] When the vehicle travels on a sharp curve at a low speed, snake behavior is likely to occur as shown in Fig. 11 (c). In this case, one of the electromagnetic dampers 21 and 22 compresses and the other expands, so that the motors rotate in opposite directions. When the two motors rotate in opposite directions, a current flows in the circuit as shown in Fig. 12 (b), which is converted into thermal energy and a damping force is generated. As a result, the snake behavior is suppressed.

[0027] In the illustrated example, the electromagnetic dampers 21 and 22 are arranged on one side. In this case, since the directions of expansion and contraction of the electromagnetic dampers 21 and 22 are reversed when passing through the curve, it is necessary to change the method of assembling the circuit. In any case, the damping force should be exerted when the bogie is meandering, and no damping force should be generated for the jogging between vehicles.

[0028] Further, the layout of the electromagnetic dampers may be arranged with only two wires on one side or one wire on one side (point symmetry). Further, in the embodiment, the electromagnetic damper is provided directly or indirectly between the bogie frame and the vehicle, but may be provided between the vehicles.

Claims

The scope of the claims

[1] An electromagnetic damper with high stiffness at the connecting part during high-speed running or straight-line running, and low stiffness at the connecting part during low-speed running or curved running is located at the connecting part of the front and rear vehicles. An articulated vehicle characterized in that:

[2] An articulated vehicle in which a bogie is arranged at a connection point of two vehicles connected to each other in the front and rear directions, and an electromagnetic damper is provided between the bogie frame or the bolster of the bogie and each vehicle, respectively. Motors are incorporated in the vehicle, and these motors are switchably connected to an independent external circuit for converting electromotive force generated by electromagnetic induction into thermal energy and a common external circuit. .

[3] In the articulated vehicle according to claim 1 or 2, the motors are connected to an independent external circuit during high-speed running or straight running, and the motors are shared during low-speed running or sharp-curve running. An articulated vehicle characterized by being connected to an external circuit.

[4] The articulated vehicle according to claim 1, wherein the bogie is a uniaxial bogie, and the electromagnetic damper is a direct-acting damper or a rotary damper.