JP6542537B2 - Brake system of the accompanying car - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a brake system of an accessory vehicle connected to another vehicle by a connecting device with a shock absorber.

  In recent years, an inverter-controlled vehicle having an induction motor as a main motor has become mainstream as a motive power of a railway vehicle. When making good use of the adhesion controllability of such an inverter-controlled vehicle, the railway vehicle is organized. It tends to reduce the ratio of motor vehicles and increase the ratio of companion vehicles. Usually, the motor vehicle and the accompaniment vehicle as well as the accompaniment vehicle are connected by a shock absorber coupling device including an automatic coupling device and a permanent coupler (rod coupler), and in such a shock absorber, The use of a coil spring that elastically deforms to absorb an impact is widely used (see, for example, Patent Document 1). In addition, when a railway vehicle is formed by a motor vehicle and an accompanying vehicle, a brake device is provided on both the motor vehicle and the accompanying vehicle, and such a braking device has a frictional force acting between the wheel and the rail. BACKGROUND ART Adhesive brakes such as tread brakes, disc brakes and electric brakes, which use (adhesive force of a wheel tread) as a braking force, are widely used (see, for example, Patent Document 2).

Here, in the railway vehicle motor vehicle is made knitting in the direction to push the trailer, during power operation, the compression force is generated in the shock absorber of the coupling device. At this time , especially in the accompanying vehicle that is connected to the push direction forward of the motor vehicle and to which no other vehicle is connected, the action of the shock absorber, that is, the vibration in the expansion and contraction direction of the coil spring, for example, Free vibration occurs, and such free vibration is likely to be sustained when the traveling resistance is small. Then, when the free vibration is sustained without convergence, ride comfort of the trailer there is a problem that worse. This becomes more pronounced when the acceleration of the vehicle is superimposed on the free vibration. In this case, if the shock absorber has a predetermined damping mechanism, it is possible to damp free vibration generated in the accompanying vehicle.

However, because it is a mechanical component, it is not easy to add the optimal damping function. Currently, adjustments are made to moderate the jerk pattern (meaning the inclination pattern up to the maximum torque ) when the motor vehicle starts up, and to mitigate the degree of compression of the shock absorber, etc., but it is essential It is not a measure.

JP 2000-255428 A JP 2000-255429 A

  SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a brake system for an accompanying vehicle which can damp free vibration generated in the accompanying vehicle as quickly as possible.

In order to solve the above-mentioned problems, the invention of the present invention is equipped with a brake device equipped with a brake controller for applying a braking force, which is connected with a motor vehicle equipped with a control device by a connecting device with a shock absorber. In the brake system of a car, free vibration in the front-back direction is generated in the accompanying vehicle by the action of a shock absorber, and the waveform of the free vibration at a predetermined cycle at that time is measured by a counter provided in the control device counting the waveform repeated in time, when it exceeds a preset count value, the controller detects the occurrence of free vibration, the brake controller, necessary to attenuate the freely vibrating the trailer It is characterized by applying a minimum braking force .

  According to the present invention, during free-running operation, when the free vibration in the longitudinal direction is generated in the accompanying vehicle by the action of the shock absorber, the braking force is applied to the accompanying vehicle, thereby preventing the free vibration in the longitudinal direction of the accompanying vehicle. Damping resistance can be added so that the free vibration is suppressed and damped as quickly as possible. In addition, the use of a brake that is usually provided to a companion vehicle can reduce the additional cost for implementing a configuration that damps free vibration.

In the present invention, if the accompanying vehicle is provided with an acceleration sensor for detecting the acceleration in the front-rear direction, and the signal waveform of the acceleration sensor is the above waveform, the free vibration of the accompanying vehicle is attenuated as quickly as possible. Deterioration in riding comfort can be converged early.

The figure which shows the railway vehicle carrying the brake system of the incidental vehicle of this invention.

Hereinafter, a brake system of a car according to the present invention will be described with reference to the drawings. Referring to FIG. 1, RC is a two-car train, and the car RC includes a connecting device 1 with a shock absorber between a motor vehicle Mc and an accessory vehicle Tc to be propelled or towed by the motor vehicle Mc. It is connected and connected. To a trailer Tc and motor vehicle Mc has its connecting opposite ends operation by positioning table in section 2 _1, 2 ₂ are respectively provided on both cab 2 _1, 2 _2, a prime mover such as a motor vehicle Mc A master controller (not shown) for outputting a control command signal to the control device 3 for general control is installed, and the driver operates the main handle 21 of the master controller during powering operation of the railway vehicle RC. It is supposed to be. As the motor vehicle Mc, a known one such as an inverter-controlled vehicle having an induction motor as a main motor can be used, and as the coupling device 1 with a shock absorber, a known one such as incorporating a coil spring (not shown) is used. Therefore, the detailed description is omitted here.

  A braking device 4 is provided on each of the motor vehicle Mc and the accessory vehicle Tc. The brake device 4 is an adhesive brake that uses, as a braking force, the frictional force (adhesive force of the wheel tread) acting between the wheels 5, 5 of the motor vehicle Mc and the accessory vehicle Tc and the rails (not shown). On the other hand, a brake shoe 41 for applying a braking force to stop the rotation and a brake controller 42 for receiving a signal from the control device 3 to control the operation of the brake shoe 41 are provided. In addition, since brake device 4 itself is a well-known thing, the detailed description beyond this is abbreviate | omitted. Further, as the brake device 4, one using a disk brake or the like can also be used.

Here, the stop state of the railway vehicle RC, (in FIG. 1, left side) advance the railcar RC operates the main handle 21 of the cab 2 ₂ trailer Tc when you try, the wheels of the motor vehicle Mc 5 Turns, and after the shock absorber (coil spring) of the coupling device 1 is compressed, the wheel 5 of the accessory vehicle Tc starts to rotate, and the railway vehicle RC starts to move. At this time, free vibration may occur in the accessory vehicle Tc in a form in which the action of the shock absorber of the coupling device 1 (the vibration in the expansion and contraction direction of the coil spring) and the acceleration overlap. In this case, since the traveling resistance of the accessory vehicle Tc is small (because it is the rotation of the iron wheel supported by the rolling bearing on the iron rail), once free vibration is generated, it does not converge and continues. For this reason, it is necessary to damp free vibration as quickly as possible so as not to deteriorate the ride quality of the accompanying vehicle Tc.

In an embodiment of the present invention, the acceleration sensor 6 that detects the acceleration in the longitudinal direction to the trailer Tc under the floor of the trailer Tc provided, when the occurrence of free vibration based on the signal waveform of the acceleration sensor 6 is detected, The braking system for the accessory vehicle Tc is configured to apply a weak braking force to the accessory vehicle Tc. Specifically, for example, a predetermined period is measured by a counter provided with a waveform of free vibration in the longitudinal direction to the control unit 3 (not shown), longitudinal vibrations of the waveform to be returned Ri Repetitive within a preset fixed time Is counted, and when a certain count value is exceeded, it may be detected as occurrence of free vibration. When the motor vehicle (electric vehicle) Mc has a periodic torque change like a resistance control vehicle, it is necessary to set the detection condition so as not to coincide with the detection of the free vibration. Then, when generation of free vibration in the front-rear direction is detected in the accessory vehicle Tc by the action of the shock absorber of the coupling device 1, the control device 3 operates the brake shoe 41 by the brake controller 42 and travels the accessory vehicle Tc. A weak brake force is applied as compared to the brake force at the time of stopping the middle railway vehicle, that is, the minimum brake force necessary to damp free vibration of the accessory vehicle Tc.

  Thus, the brake shoe 41 acts on the wheel 5 of the accessory vehicle Tc to apply a weak braking force, thereby adding damping resistance to the free vibration of the accessory vehicle Tc in the front-rear direction, thereby suppressing the divergence of the free vibration. It is attenuated as soon as possible. As a result, the deterioration of the ride comfort of the additional vehicle Tc due to the free vibration can be converged early. In this case, since the brake device 4 provided to the accessory vehicle Tc is used, the additional cost for realizing the configuration for damping free vibration can be reduced.

As mentioned above, although embodiment of this invention was described, this invention is not limited to said thing. In the above embodiment, those of railway vehicles RC and 2-car train has been described as an example, but the invention is not limited thereto, widely applied can if trailer connected to any position, also, The present invention can be applied not only to the power running operation but also to free vibration caused by the brake, notch change and the like.

RC: railway vehicle, Mc: motor vehicle, Tc: accompanying vehicle, 1: connecting device, 4: brake device, 41: brake shoe (braking device), 42: brake controller (braking device), 6: acceleration sensor.

Claims (2)

A brake system for an accessory vehicle equipped with a brake device equipped with a brake controller for applying a braking force, which is connected with a motor vehicle equipped with a control device by a connecting device with a shock absorber,
By the action of the shock absorber, free vibration in the back and forth direction is generated in the accompanying vehicle, and the waveform of the free vibration at a predetermined cycle at that time is measured by a counter provided in the control device and repeated in a predetermined time set in advance. counting the waveforms, when exceeding the predetermined count value, the controller detects the occurrence of free vibration, the brake controller, the minimum braking force required to attenuate the freely vibrating the trailer A brake system of an accompanying car characterized by giving . The brake system according to claim 1, wherein the accompanying vehicle is provided with an acceleration sensor for detecting an acceleration in the front-rear direction, and a signal waveform of the acceleration sensor is the waveform.

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