JP2515785B2 - Vibration control device for railway vehicles - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle vibration control device, and more particularly to a vehicle vibration control device suitable for suppressing vibrations generated in a vehicle body.

[Conventional technology]

As a conventional vehicle vibration control device, for example, Japanese Patent Laid-Open No.
-17754 and the like are known. The structure is a system that controls the internal pressure of the double-acting air cylinder in parallel with the spring that supports the vehicle body, and the control force depends on the differential pressure between the two chambers of the double-acting air cylinder. When a large output is required, the servo valve, air cylinder, etc. become large due to the low supplied air pressure, and the control force generated by Not only is it difficult to attach the device to the air conditioner, but the air consumption may increase.

[Problems to be solved by the invention]

The above-mentioned prior art does not consider amplification of control force and miniaturization of the air cylinder, and there is a problem of insufficient control.

In the conventional method of controlling both chambers of a double-acting cylinder, by changing the pressure difference between the two chambers, positive and negative forces can be generated as the cylinder force, and the positive and negative forces are applied directly between the vehicle body and the bogie. Control the vibration. That is, since a double-acting cylinder is used, it is difficult to amplify its output, and the cylinder is large because it has both chambers.

An object of the present invention is to provide a compact vibration control device.

[Means for solving problems]

The present invention relates to a vibration control device for a railroad vehicle, which is installed between a vehicle body and a bogie and controls relative movement between the two. And two single-acting cylinders that connect the longitudinal center portions of the respective connecting members to the carriage or the vehicle body, and And a controller for discharging the fluid from the other single-acting cylinder while supplying the fluid to the single-acting cylinder.

[Action]

According to this structure, if the fluid is put into one of the two single-acting cylinders and the fluid is discharged from the other cylinder,
The car body moves to the left or right with respect to the bogie. When the fluid is introduced into the other single-acting cylinder and the fluid is discharged from the one single-acting cylinder, the vehicle body moves to the other. Thereby, the vibration of the vehicle body can be suppressed.

The connecting member connects the vehicle body and the carriage, and does not restrain the vertical and horizontal movements of the vehicle body.
For example, a link mechanism, a rope or a plate, etc. For this reason, if this central portion is moved, a force increasing action occurs. Therefore, even a small single-acting cylinder device can generate a large pressure even if the fluid pressure is small, and the device can be made compact.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. In the figure, brackets 3a and 3b are provided on both sides of the tip of the center pin 2 provided on the vehicle body 1, while brackets 5a and 5b are provided on both sides of the center pin 2 from the bogie frame 4. Has been. Single-acting cylinders 6a, 6b are installed between the brackets 5a, 5b and the brackets 3a, 3b, respectively, and rods of the single-acting cylinders 6a, 6b are installed.
At the tip of 7a, 7b, one end of 8a, 8b (hereinafter referred to as rope) composed of a link mechanism that does not restrain the movement of the vehicle body up and down, left and right, or a rope or plate with low rigidity is attached to the bracket 3a, 3b. The other end is the bracket 5a, 5b
Installed on each. Also, the above ropes 8a, 8b
In order to allow the body 1 to move sideways and up and down to some extent,
It is attached with a slack of ~ 30mm. That is, the length of the rope 8a (8b) is longer than the length of connecting the two connecting points 3a (3b) and 5a (5b) in a straight line. This rope 8a, 8b
The link mechanism, the plate, or the like connects the vehicle body 1 and the carriage 4 and is referred to as a connecting member.

The controller 9 amplifies and compensates the output of the vibration detector 10 mounted on the vehicle body 1, and sends a signal to the servo valve 11 to cause the servo valve 11 to operate.
11 sends the fluid according to this signal from the fluid source 12 to the single acting cylinder 6a or 6b.

FIG. 2 shows an operation diagram when the vehicle body is trying to move in a certain direction (left side in the figure), in which fluid is sent to the single-acting cylinder 6a and conversely the single-acting cylinder 6b.
The vibration of the vehicle body 1 can be suppressed by draining the fluid from.

Fig. 3 shows single-acting cylinder 6a and rope 8a in Fig. 2.
And the force acting on the brackets 3a and 5a, the force P ₁ generated on the single-acting cylinder 6a is the rope 8a.
Allowed to occur a large force component P _2, the bracket 3a, a large horizontal force P _3a to 5a, and P _5a occurs, suppressing the movement of the car body and the bogie. That is, in FIG. 3, if the angle between the rope 8a and the straight line connecting the brackets 3a and 5a is θ, then P
₂ is given by the following equation.

P ₂ = P ₁ / (2 × sin θ) (1) Therefore, the horizontal forces P _3a and P _5a are as follows.

P _3a = P _5a = P ₁ / (2 × tan θ) (2) Therefore, the force that suppresses the vehicle body and the bogie is P _3a + P _5a P ₁ / t
By configuring the rope 8a and the velvet 3a, 5a such that an θ and tan θ <1, the output of the single-acting cylinder can be amplified.

In addition, as another advantage, the conventional bogie is provided with a stopper so that the bogie frame and the vehicle body cannot be displaced relative to each other to a certain extent.However, according to this method, the ropes 8a and 8b serve as alternatives. There is also an advantage that the conventional stopper can be omitted.

〔The invention's effect〕

According to the present invention, by using a single-acting cylinder, a control force obtained by amplifying the cylinder force several times can be produced.
Even if the fluid source is low-pressure air, the control force will not be insufficient, and it will be more compact than the double-acting cylinder, which is advantageous in terms of rigging.

[Brief description of drawings]

FIG. 1 is a front view showing a vibration control device according to the present invention, and FIG.
FIG. 3 is a front view showing an operating state of the power transmission section of FIG. 1, and FIG.
The figure is a front view showing the acting force of the power transmission section shown in FIG. 1 ... Car body, 2 ... Center pin, 4 ... Bogie, 6a, 6b ...
Single-acting cylinder, 8a, 8b ... rope, 9 ... controller, 10
…… Vibration detector, 11 …… Servo valve, 12 …… Fluid source

Claims (1)

(57) [Claims] 1. A vibration control device for a railway vehicle, which is installed between a vehicle body and a bogie and controls relative movement between the two, wherein the central pin of the vehicle body and the bogies on both sides thereof are respectively coupled to each other, and the respective couplings are provided. Two connecting members that are connected by a member that is longer than the length that connects the points linearly; two single-acting cylinders that connect the longitudinal center portion of each connecting member to the carriage or the vehicle body; A vibration control device for a railway vehicle, comprising: a controller that discharges fluid from the other single-acting cylinder while supplying fluid to the one single-acting cylinder.