JP5792684B2 - Yodamper equipment - Google Patents

Description

  The present invention relates to a yaw damper device that generates a damping force with respect to the behavior in the yaw direction of a bogie of a railway vehicle.

Generally, a railway vehicle is configured by attaching a pair of trucks on the front and rear of a vehicle body so as to be able to give a bogie angle (relative yaw angle of the carriage frame with respect to the vehicle body).
In such a railway vehicle, it is known to provide a yaw damper device that generates a damping force with respect to the behavior of the carriage frame in the yaw direction with respect to the vehicle body between the carriage frame and the vehicle body for the purpose of suppressing snake behavior and the like. .
For example, Patent Document 1 describes a yaw damper device that is configured by providing an oil damper having vibration isolation devices at both ends between a vehicle body and a carriage frame.

JP 2007-139100 A

The yaw damper device is effective in damping the yaw motion of the bogie frame, but it also generates a damping force against translational motion, pitch motion, and roll motion of the bogie frame along the damper's axial direction. The force acts as a vibration force on the vehicle body, which has the detrimental effect that the vehicle body vibration deteriorates.
For example, if the bogie frame moves relative to the sleeper in a predetermined range with respect to the vehicle body when the vehicle is running, such a movement of the bogie left and right is performed when the damper axis of the yaw damper device is arranged along the sleeper. A damping force is generated with respect to the vehicle body and acts on the vehicle body as an excitation force of roll vibration.
In addition, when the damper axis is arranged along the front-rear direction, a damping force is generated with respect to the pitch motion of the carriage, and acts as an excitation force in the front-rear direction on the lower part of the vehicle body, thereby worsening the vehicle body bending vibration. End up.
In view of the above-described problems, an object of the present invention is to provide a yaw damper device that suppresses the generation of damping force with respect to the behavior of the carriage other than in the yaw direction.

In order to solve the above-described problems, a yaw damper device according to the present invention is a yaw damper device provided between a vehicle body and a carriage frame of a railway vehicle, and is relatively movable along a predetermined translational movement direction with respect to the vehicle body. And a yaw damper receiving beam supported by the wheel frame, and is provided between the carriage frame and the yaw damper receiving beam, and generates a damping force corresponding to a yaw motion of the carriage frame relative to the yaw damper receiving beam and generates the damping force. Comprises a damper disposed substantially along the moving direction of the yaw damper receiving beam.
According to this, when the carriage frame translates relative to the vehicle body in the direction along the direction in which the damping force of the damper is generated, the yaw damper receiving beam moves relative to the vehicle body together with the carriage frame. ) Can be suppressed.
On the other hand, when the bogie frame rotates in the yaw direction with respect to the vehicle body, the yaw damper receiving beam and the bogie frame rotate relative to each other in the yaw direction, so that the damper expands and contracts to attenuate the yaw motion of the bogie frame. Directional damping force can be generated .

Furthermore, the present invention, the yaw damper receiving beam with is guided linearly along the sleeper direction with respect to the vehicle body, constituting said damper disposed in front and rear end portions of the bogie frame, the body of the yaw damper receiving beam And at least one of a configuration having a return spring that restores to a neutral position with respect to.
According to the former feature , when the damper is arranged at the front and rear end portions of the carriage frame along the sleeper direction, the damper is designed to be guided straight along the sleeper direction. Generation of damping force other than the direction (the direction of yaw motion) can be suppressed, and the influence on roll vibration, left-right vibration, etc. of the vehicle body can be prevented.
According to the latter feature, the yaw damper receiving beam is restored to the neutral position at the normal time, so that the bias of the yaw damper receiving beam can be prevented and the above-described effects can be reliably obtained.

  In the present invention, the damper may be configured such that at least a pair is provided across a turning center of a yaw motion with respect to the yaw damper receiving beam of the carriage frame.

  As described above, according to the present invention, it is possible to provide a yaw damper device that suppresses the generation of damping force with respect to the behavior of the carriage other than the yaw direction.

It is a schematic diagram which shows the state which looked at the railway vehicle which has embodiment of the yaw damper apparatus to which this invention was applied from the sleeper direction. It is a typical top view showing the state where the yaw damper device of an embodiment was seen from the vehicles upper part. It is a schematic diagram which shows the state which looked at the railway vehicle which has the reference example of the yaw damper apparatus to which this invention was applied from the sleeper direction. It is a typical top view which shows the state which looked at the yaw damper apparatus of the reference example from the vehicle upper direction.

Hereinafter, with reference to the drawings will be described yaw damper device according to implementation embodiments and reference examples of the present invention.
< Embodiment >
First, the yaw damper device of the embodiment will be described.
The yaw damper device according to the embodiment is provided, for example, in a railway vehicle having a pair of front and rear biaxial bogies at the lower part of a vehicle body.

The railway vehicle 1 includes a vehicle body 10, a carriage 20, a yaw damper device 30, and the like.
The vehicle body 10 is formed in a substantially hexahedron shape with a side frame and a wife frame standing on the top of the underframe and a roof frame on the top.

The cart 20 is a two-axis bogie that is disposed in the lower part of the vehicle body 10 with a pair spaced apart in the front-rear direction.
The cart 20 includes a cart frame 21, a wheel shaft 22, a shaft box 23, a shaft spring 24, a pillow spring 25, and the like.
The bogie frame 21 is a structural member constituting the main body of the bogie 20, and is configured by connecting side beams provided on the left and right and extending in the front-rear direction with cross beams extending in the direction of the sleepers.
The carriage frame 21 is attached to the lower part of the vehicle body 10 via a traction device or the like (not shown), and is rotatable in a direction in which a bogie angle (relative yaw angle with respect to the vehicle body 10) is applied.
Further, a left-right motion damper device (not shown) that generates a damping force corresponding to the left-right motion of the carriage frame 21 is provided between the vehicle body center pin (not shown) and the carriage frame 21.

The wheel shaft 22 is configured by connecting a pair of left and right wheels with an axle.
The axle box 23 supports both ends of the wheel shaft 22 in a rotatable manner, and includes a bearing, a lubrication device, and the like.
The axle box 23 is attached to the carriage frame 21 via an axle box support device (not shown) so as to be relatively displaceable in the vertical direction.
The shaft spring 24 is a primary spring provided between the shaft box 23 and the carriage frame 21.
The pillow spring 25 is a secondary spring provided between the upper part of the left and right side beams of the bogie frame 21 and the lower surface of the vehicle body 10, and includes, for example, an air spring.

The yaw damper device 30 includes a yaw damper receiving beam 31, a linear guide 32, an oil damper 33, a return spring 34, and the like.
The yaw damper receiving beam 31 is a panel-like member that is attached to the lower part of the vehicle body 10 and arranged substantially along the horizontal direction.
The yo-damper receiving beam 31 is supported so as to be capable of translational movement along the sleeper direction with respect to the vehicle body 10, and relative movement in other directions is restricted.
The linear guide 32 guides the yaw damper receiving beam 31 linearly in the sleeper direction with respect to the vehicle body 10, and is fixed to the yaw damper receiving beam 31 and travels along a rail fixed to the vehicle body 10. is there

The oil damper 33 is disposed so as to connect between an end portion of the side beam of the carriage frame 21 in the front-rear direction and a protruding portion formed by protruding from the end portion of the yaw damper receiving beam 31 in the front-rear direction. A cylinder and a piston rod that move relative to each other in accordance with the relative displacement in the direction of the sleepers are provided.
Both end portions of the oil damper 33 are connected to the bogie frame 21 and the yaw damper receiving beam 31 via vibration-proof rubber or the like.
In order to suppress the expansion and contraction of the oil damper 33 due to the roll motion of the vehicle body 10, the connection point between the yaw damper receiving beam 31 and the oil damper 33 is the vehicle body in the sleeper direction with respect to the connection point between the carriage frame 21 and the oil damper 33. 10 is arranged at a position close to the center.
The oil damper 33 generates a damping force corresponding to the relative movement between the cylinder and the piston rod.

The return spring 34 is provided between the linear guide 32 and the vehicle body 10 and includes a spring element that generates a biasing force that restores the yaw damper receiving beam 31 to a neutral position in the movable range.
The linear guide 32, the oil damper 33, and the return spring 34 described above are provided on the front and rear sides of the carriage 20 so as to be axially symmetric with respect to the rotation center axis of the carriage frame 21 with respect to the vehicle body 10 in the yaw direction. Yes.
Taking the case where the vehicle travels to the left side in FIG. 2 as an example, the front oil damper 33 is connected to the carriage frame 21 on the right side and connected to the yaw damper receiving beam 31 on the left side. The rear oil damper 33 is connected to the carriage frame 21 on the left side and connected to the yaw damper receiving beam 31 on the right side.

According to the embodiment described above, when there is an in-phase input to the front and rear oil dampers 33 as in the case where the bogie frame 21 moves relative to the vehicle body 10 in the direction of the sleeper (left-right movement), the yaw damper When the receiving beam 31 moves relative to the vehicle body 10 in the direction of the sleeper, the expansion and contraction of the oil damper 33 is suppressed, so that the generation of the damping force by the oil damper 33 is suppressed. (A force that moves the yo-yo damper receiving beam 31 is generated, but this is relatively small.)
For this reason, it is possible to prevent the damper generating force from being input to the vehicle body 10 as an excitation force for left-right vibration and affecting the vehicle body vibration.
Further, when the front and rear oil dampers 33 are input in opposite phases, such as when the carriage frame 21 is rotated in the yaw direction with respect to the vehicle body, the damping force generated by each oil damper 33 is reduced by the yaw damper receiving force. The yaw motion of the carriage frame 21 can be attenuated by being transmitted to the vehicle body 10 via the beam 31 and the linear guide 32.

< Reference example >
Next, a reference example of a yaw damper device to which the present invention is applied will be described.
In the reference example , portions that are substantially the same as those in the above-described embodiment are denoted by the same reference numerals, description thereof is omitted, and differences are mainly described.
FIG. 3 is a schematic diagram showing a state in which a railway vehicle having a reference yaw damper device is viewed from a sleeper direction.
FIG. 4 is a schematic plan view showing a state in which the yaw damper device of the reference example is viewed from above the vehicle.

In the reference example , a yaw damper device 130 described below is provided instead of the yaw damper device 30 of the embodiment .
The yaw damper device 130 includes a yaw damper receiving beam 131, a linear guide 132, an oil damper 133, a return spring 134, and the like.
The yaw damper receiving beam 131 is disposed on one side in the front-rear direction with respect to the center of the carriage, is supported so as to be able to translate along the front-rear direction with respect to the vehicle body 10, and relative movement in other directions is restricted. Yes.
The linear guide 132 guides the yaw damper receiving beam 131 linearly in the front-rear direction with respect to the vehicle body 10.

The oil damper 133 protrudes outward from the center part of the side beam of the carriage frame 21 toward the sleeper direction, and protrudes outward from the end part of the side frame end side of the carriage frame 21 of the yaw damper receiving beam 131 toward the sleeper direction. A cylinder and a piston rod that are disposed so as to be connected to each other, move relative to each other in accordance with a relative displacement in the front-rear direction therebetween, and generate a damping force are provided.
The return spring 134 restores the yaw damper receiving beam 131 to the neutral position in the guide range by the linear guide 132.
The linear guide 132 and the oil damper 133 described above are provided on the left and right sides so as to be symmetric with respect to the left and right center of the carriage 20.

According to the reference example described above, in-phase input is applied to the left and right oil dampers 133 as in the case where the bogie frame 21 moves relative to the vehicle body 10 in the front-rear direction (left-right movement) or moves in the pitching direction. In such a case, the yaw damper receiving beam 131 moves relative to the vehicle body 10 in the front-rear direction, so that the expansion and contraction of the oil damper 133 is suppressed. Therefore, the generation of a damping force by the oil damper 133 is suppressed.
For this reason, it is possible to prevent the damper generating force from being input to the vehicle body 10 as an excitation force of bending vibration or longitudinal vibration and affecting the vehicle body vibration.
When the left and right oil dampers 133 are input in opposite phases, such as when the carriage frame 21 is rotated in the yaw direction with respect to the vehicle body, the damping force generated by each oil damper 133 is reduced by the yaw damper receiving force. The yaw motion of the carriage frame 21 can be attenuated by being transmitted to the vehicle body 10 via the beam 31 and the linear guide 32.

(Other embodiments)
The present invention is not limited to the implementation described above, various variations and modifications may be made.
For example, the structure, shape, arrangement, and the like of each component constituting the yaw damper device are not limited to the above-described embodiments, and can be changed as appropriate.

DESCRIPTION OF SYMBOLS 1 Railway vehicle 10 Car body 20 Bogie 21 Bogie frame 22 Wheel shaft 23 Shaft box 24 Shaft spring 25 Pillow spring 30 Yaw damper device 31 Yaw damper receiving beam 32 Linear guide 33 Oil damper 34 Return spring 130 Yaw damper device 131 Yaw damper receiving beam 132 Linear guide 133 Oil damper 133 134 Return spring

Claims (4)

A yaw damper device provided between the body of the railway vehicle and the bogie frame,
A yaw damper receiving beam supported to be movable relative to the vehicle body along a predetermined translational movement direction;
The damping frame is provided between the carriage frame and the yaw damper receiving beam, generates a damping force according to a yaw motion of the carriage frame with respect to the yaw damper receiving beam, and the generation direction of the damping force is the moving direction of the yaw damper receiving beam. And a damper arranged substantially along the
The yayo damper receiving beam is guided straight along the sleeper direction with respect to the vehicle body,
The damper is disposed at the front and rear ends of the bogie frame.
Yaw damper device characterized by A return spring for restoring the yaw damper receiving beam to a neutral position with respect to the vehicle body;
  The yaw damper device according to claim 1. A yaw damper device provided between the body of the railway vehicle and the bogie frame,
  A yaw damper receiving beam supported to be movable relative to the vehicle body along a predetermined translational movement direction;
  The damping frame is provided between the carriage frame and the yaw damper receiving beam, generates a damping force according to a yaw motion of the carriage frame with respect to the yaw damper receiving beam, and the generation direction of the damping force is the moving direction of the yaw damper receiving beam. With dampers arranged almost along
  With
  A return spring for restoring the yaw damper receiving beam to a neutral position with respect to the vehicle body;
  A yodamper device according to claim. At least a pair of the dampers are provided across a turning center of yaw motion with respect to the yaw damper receiving beam of the carriage frame.
  The yaw damper device according to any one of claims 1 to 3, wherein:

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