JP4927698B2 - Method and apparatus for reducing swaying of combined vehicles - Google Patents

Description

  The present invention relates to a combined vehicle sway reduction method and apparatus for reducing swaying of a vehicle due to turbulence of an air flow at a combined part of the vehicle when the railway vehicles travel together.

Conventionally, when railway vehicles such as the Akita Shinkansen “Komachi” and the Tohoku Shinkansen “Hayate” (or “Yamabiko”) travel together, it is necessary to reduce vehicle shaking caused by aerodynamic forces.
Conventionally, research on numerical simulation of air flow around a train (see Non-Patent Document 1 below) has been made, and proposals have been made to reduce vehicle shaking.
In addition, proposals have been made to use a jet to reduce air resistance (see Patent Documents 1 and 2 below).

Furthermore, a proposal has been made to use a jet for collapsing a vortex growing on the side surface of a vehicle assuming an intermediate vehicle of a railway vehicle (see Patent Document 3 below).
JP-A-57-007755 Japanese Patent Laid-Open No. 57-018556 JP 2005-205947 A "Numerical simulation of the flow around the train" (2nd report, unsteady aerodynamic force applied to the trailing vehicle), Masahiro Suzuki, Norio Arai, Tatsuo Maeda, Transactions of the Japan Society of Mechanical Engineers (B), Volume 62, 595 (1996) -3), pp. 229-235

When the combined vehicle travels at a high speed, a large fluctuating aerodynamic force is generated in the leading vehicle behind the combined portion due to the turbulence of the air generated by the rear vehicle in front of the combined portion, and the vehicle shake increases. In the conventional method (vehicle vibration control technology) used for reducing vehicle shake, when the fluctuating aerodynamic force is large, the vibration suppression performance is limited, and the ride quality may be deteriorated.
Up to now, there is no method for reducing vehicle fluctuations that occur when railcars travel together in addition to the above-described vehicle vibration control methods (such as semi-active suspension).

  In view of the above situation, the present invention reduces the fluctuating aerodynamic force generated in the leading vehicle behind the combined portion by controlling the turbulence of the air generated from the trailing vehicle in front of the combined portion in the combined vehicle by the jet flow It is an object of the present invention to provide a method and apparatus for reducing sway of a combined vehicle that can perform the above-described operation.

In order to achieve the above object, the present invention provides
[1]併結in motion suppression method for a vehicle, the jet opening is provided on the roof of併結portion ahead of the tail car of併結vehicle, by controlling the jet raised onset Ri by the jet opening by the control means, this jet By controlling the turbulence of the air generated from the rear vehicle in front of the combined portion of the combined vehicle, the fluctuating aerodynamic force generated in the leading vehicle behind the combined portion of the combined vehicle is reduced.

[2] In the method for reducing swaying of the combined vehicle according to [1], a plurality of the jet openings are arranged in the width direction of the rear vehicle in front of the combined portion of the combined vehicle.
[3] In the method for reducing swaying of a combined vehicle according to [1] or [2], the jet opening is disposed at a rear part near a rear part of a rear vehicle in front of the combined part of the combined vehicle. .

[4] In the method for reducing swaying of the combined vehicle described in [1], [2] or [3], the direction of the jet from the jet opening can be adjusted.
[5] In the method for reducing swaying of the combined vehicle described in [1], [2], or [3], the amount of jet flow from the jet opening is adjustable.
[6] In the method for reducing swaying of the combined vehicle according to [1], [2], or [3], the direction and amount of the jet from the jet opening can be adjusted.

[7] In the combined vehicle sway reduction method described in [1], [2] or [3] above, a pressure sensor is disposed on the vehicle body surface in front of the jet opening, and based on an output value of the pressure sensor The jet means is controlled by the control means.
[8] In the combined vehicle sway reduction method described in [1], [2] or [3] above, a vibration sensor is arranged in the rear vehicle, and a jet flow is generated by the control means based on an output value of the vibration sensor. The period is controlled.

[9] In the combined vehicle sway reduction device, a jet opening formed on the roof of the rear vehicle in front of the combined portion of the combined vehicle, and a compressed air tank mounted on the rear vehicle in front of the combined portion of the combined vehicle, And a jet control means for blowing out from the jet opening.
[10] In the combined vehicle sway reduction device according to [9], the jet control unit includes a jet direction control device that controls a jet direction from the jet opening.

[11] In the sway reduction device for a combined vehicle according to [10], the jet flow control means determines the amount of jet flow from the jet opening disposed between the compressed air tank and the jet opening. characterized by comprising a control equipment of the amount of control jets.
[12] In the combined vehicle sway reduction device according to [9], [10], or [11], the jet opening is disposed at a rear portion near a rear portion of a rear vehicle in front of the combined portion of the combined vehicle. It is characterized by.

[13] In the combined vehicle sway reduction device according to [9], [10], or [11], a pressure sensor is provided on a vehicle body surface in front of the jet opening, and based on an output value of the pressure sensor, The jet flow period is controlled by the jet flow control means.
[14] In the combined vehicle sway reduction device according to [9], [10], or [11] above, the rear vehicle is provided with a vibration sensor, and the jet flow control means is based on an output value of the vibration sensor. It is characterized by controlling the jet cycle.

According to the present invention, the following effects can be achieved.
(1) The fluctuating aerodynamic force generated in the leading vehicle behind the combined portion of the combined vehicle can be effectively reduced.
(2) A combined vehicle having a simple configuration and good ride comfort can be configured.
(3) When the vehicle shape is changed by the projection in the light section, a problem of aerodynamic noise occurs, but the problem does not occur in the method using the jet. Also, the jet can be easily turned off.

併結motion suppression method for a vehicle of the present invention, the jet opening is provided on the roof of併結portion ahead of the tail car of併結vehicle, by controlling the jet raised onset Ri by the jet opening by the control means, this jet By controlling the turbulence of the air generated from the rear vehicle in front of the combined portion of the combined vehicle, the fluctuating aerodynamic force generated in the leading vehicle behind the combined portion of the combined vehicle is reduced.

Hereinafter, embodiments of the present invention will be described in detail.
FIG. 1 is a side view of a combined vehicle including a combined vehicle sway reduction device showing an embodiment of the present invention, FIG. 2 is a top view thereof, and FIG. 3 is an outline of the combined vehicle sway reduction device showing an embodiment of the present invention. FIG. 4 is a block diagram of the control device for the jet opening.
In these drawings, 1 is a combined vehicle, 2 is a rear vehicle in front of the combined portion of the combined vehicle 1, 3 is a rear portion of the rear vehicle 2, and 4 is a jet opening disposed in the rear portion 3 of the rear vehicle 2. 4A is a pressure sensor disposed on the side of the vehicle in front of the jet opening 4 of the tail 3 of the tail vehicle 2, 4B is a vibration sensor disposed on the tail vehicle 2, 5 is a jet, 6 is a wheel, and 7 is a rail. , 8 is the leading vehicle behind the combined portion of the combined vehicle 1, 9 is the leading portion of the leading vehicle 8, and 10 is a connecting member.

Here, a plurality of jet openings 4 are arranged in the width direction of the rear part 3 of the rear vehicle 2 in front of the combined part of the combined vehicle 1 (here, five examples are shown). In addition, you may make it arrange | position only one jet opening part long in the width direction of a vehicle.
Further, as shown in FIGS. 1 and 2, the jet opening 4 is arranged in the rear part 3 near the rear part of the rear vehicle 2 in front of the combined part of the combined vehicle 1.

  Further, as shown in FIG. 3, the jet 5 blown out from the jet opening 4 is controlled by a control device 11 that adjusts the jet from the compressed air tank T. The specific control mechanism is as shown in FIG. The control device 11 includes a flow rate control device 12 (having a control valve) that controls the amount of the jet, and a jet direction control device 14 that is disposed on the support 13 and controls the direction of the jet that blows out from the jet opening 4. The flow rate control device 12 and the jet flow direction (direction) control device 14 are controlled by the control unit 15. The jet direction control device 14 includes, for example, a universal control device 14A sealed on the support portion 13, and the universal control device 14A is configured to individually adjust the jet opening 4 orientation. Has been.

  In the present embodiment, the flow rate of the jet 5 is controlled by the flow control device 12 based on the output signal from the pressure sensor 4A disposed in the rear vehicle 2 in front of the combined portion of the combined vehicle 1. Yes. For example, a periodic jet synchronized with a certain frequency (1 Hz to 3 Hz) can be generated. The pressure sensor 4A is preferably disposed in front of the jet opening 4 in order to accurately measure the turbulence of air generated in the tail vehicle 2 in front of the combined portion that causes vibration of the combined vehicle 1.

Further, the vibration sensor 4B may be arranged in the rear vehicle 2 in front of the combined portion of the combined vehicle 1, and the period of jetting the jet 5 may be adjusted by using the measured value of the vehicle body vibration by the vibration sensor 4B.
By comprising in this way, the wasteful energy by a continuous jet can be suppressed and energy saving can be achieved.

As described above, the jet flow obtained by the combined vehicle sway reduction device of the present invention is as follows: (1) The amount of jet flow can be controlled. In a section that does not require a jet, the amount of jet can be reduced to the maximum and turned off. Furthermore, the jet cycle may be controlled using a pressure sensor or a vibration sensor arranged in the rear vehicle in front of the combined portion.
(2) The direction (direction) of the jet can be controlled. As shown in FIG. 2, when a plurality of jet openings 4 are arranged, each jet opening 4 may be individually controlled.

(3) The amount of jet and the direction (direction) of the jet can be effectively controlled by combining the above (1) and (2).
As described above, the jet flow obtained by the combined vehicle sway reduction device of the present invention can effectively control the amount and direction (direction) of the jet flow, and the fluctuating air generated in the leading vehicle behind the combined portion of the combined vehicle. An optimal jet can be set to reduce the force.

Actually, 2 + 2 combined vehicles were knitted in the tunnel on a 1/33 scale, and a wind tunnel experiment was conducted at a wind speed of 10 m / s and a jet flow (jet) supply pressure of 5 atm.
FIG. 5 is a diagram showing PSD (power spectrum density (vibration, etc.)) of yawing moment of fluctuating aerodynamic force of the leading vehicle behind the combined portion of the combined vehicle by an experiment using the combined vehicle sway reduction device of the present invention. The horizontal axis indicates frequency (Hz), and the vertical axis indicates PSD. Here, the solid line shows the case where there is no jet (jet) in the conventional vehicle, and the dotted line shows the case where there is a jet (jet) of the present invention. The jet (jet) shows the leading vehicle behind the combined part of the combined vehicle. It can be seen that the fluctuating aerodynamic force is reduced.

Moreover, in the said Example, although the jet opening part has been arrange | positioned at the upper surface part of a vehicle, you may make it expand further to a side part and arrange | position a jet opening part.
In addition, this invention is not limited to the said Example, A various deformation | transformation is possible based on the meaning of this invention, and these are not excluded from the scope of the present invention.

  The combined vehicle sway reduction method and apparatus of the present invention can be used as a combined vehicle sway reduction method and apparatus that can improve the riding comfort of the combined vehicle.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a combined vehicle including a combined vehicle sway reduction device showing an embodiment of the present invention. It is a top view of the combined vehicle provided with the fluctuation reduction device of the combined vehicle showing an embodiment of the present invention. It is a schematic block diagram of the fluctuation reduction apparatus which shows the Example of this invention. It is a block diagram of the control apparatus of the jet opening part of the fluctuation reduction apparatus which shows the Example of this invention. It is a figure which shows PSD of the yawing moment of the fluctuation | variation aerodynamic force of the head vehicle of the rear part of the combined part of the combined vehicle by experiment using the vibration reduction apparatus of the combined vehicle of this invention.

DESCRIPTION OF SYMBOLS 1 Combined vehicle 2 Rear vehicle in front of combined part of combined vehicle 3 Rear part of rear vehicle in front of combined part of combined vehicle 4 Jet opening 4A Pressure sensor 4B Vibration sensor 5 Jet 6 Wheel 7 Rail 8 Rear of combined part of combined vehicle Leading vehicle 9 Leading portion of leading vehicle behind combined portion of combined vehicle 10 Connecting member 11 Control device 12 Flow rate control device 13 Supporting portion 14 Control device for jet direction (direction) 14A Universal control device 15 Control portion

Claims (14)

A jet opening is provided on the roof of併結portion ahead of the tail car of併結vehicle, the jet was controlled by the control unit raised onset Ri by the jet opening, the併結portion ahead of the tail car of the併結vehicle by該噴flow A fluctuation reduction method of a combined vehicle, wherein a fluctuating aerodynamic force generated in a leading vehicle behind the combined portion of the combined vehicle is reduced by controlling turbulence of the generated air.   The method for reducing sway of a combined vehicle according to claim 1, wherein a plurality of the jet openings are arranged in the width direction of the rear vehicle in front of the combined part of the combined vehicle.   3. The method for reducing sway of a combined vehicle according to claim 1, wherein the jet opening is arranged at a rear part near the rear of the rear vehicle in front of the combined part of the combined vehicle. .   4. The combined vehicle sway reduction method according to claim 1, 2, or 3, wherein the direction of the jet flow from the jet opening is adjustable.   4. The combined vehicle sway reduction method according to claim 1, 2, or 3, wherein the amount of jet flow from the jet opening is adjustable.   4. The combined vehicle sway reduction method according to claim 1, 2, or 3, wherein the direction and amount of the jet flow from the jet opening can be adjusted.   4. The combined vehicle sway reduction method according to claim 1, 2, or 3, wherein a pressure sensor is disposed on a vehicle body surface in front of the jet opening, and a jet cycle is controlled by the control means based on an output value of the pressure sensor. A method for reducing the shaking of a combined vehicle, characterized by controlling the vehicle.   4. The method for reducing sway of a combined vehicle according to claim 1, wherein a vibration sensor is arranged in the rear vehicle, and the cycle of the jet is controlled by the control means based on an output value of the vibration sensor. A method for reducing the shaking of a combined vehicle. (A) a jet opening formed on the roof of the rear vehicle in front of the combined portion of the combined vehicle;
(B) a compressed air tank mounted on a rear vehicle in front of the combined portion of the combined vehicle;
(C) A sway reducing device for a combined vehicle, characterized by comprising control means for a jet flow blown from the jet opening portion.   10. The combined vehicle sway reduction device according to claim 9, wherein the jet control means includes a jet direction control device that controls a direction of the jet from the jet opening. apparatus. The sway reduction device for a combined vehicle according to claim 10, wherein the jet control means controls the amount of jet from the jet opening disposed between the compressed air tank and the jet opening. motion suppression device for併結vehicle, characterized by comprising a control equipment amounts.   12. The combined vehicle sway reduction device according to claim 9, 10 or 11, wherein the jet opening is disposed at a rear part near the rear of a rear vehicle in front of the combined part of the combined vehicle. Reduction device.   12. The combined vehicle sway reduction device according to claim 9, 10 or 11, wherein a pressure sensor is provided on the surface of the vehicle body in front of the jet opening, and the jet flow is controlled by the jet control means based on an output value of the pressure sensor. An apparatus for reducing shaking of a combined vehicle characterized by controlling a cycle.   12. The combined vehicle sway reduction device according to claim 9, 10 or 11, wherein the rear vehicle is provided with a vibration sensor, and the jet flow control means controls the jet flow cycle based on an output value of the vibration sensor. An apparatus for reducing sway of a combined vehicle.

Images