SU1468789A1 - Device for detecting vehicle wheel pairs acceleration slip and locking - Google Patents

Abstract

The invention relates to transport and is intended to detect the boxing and skid of the driving wheel sets of locomotives. The purpose of the invention is to increase accuracy. The device for detecting boxing and wheelset yields contains a delay unit 7 connected by output through key element 5 to one of the inputs of the comparison unit 4 with the memory element at the output connected by the output to one of the inputs of the comparison unit 6, the other input of which is connected with wheelset speed sensors connected to the input of the minimum-signal selection unit, which through the differentiating unit and the integrator is connected to another input of the comparator unit 4. 1 il. i

Description

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The invention relates to transport and is intended to detect the box and skid of driving wheel sets of locomotives.

The purpose of the invention is to improve accuracy.

The drawing shows the proposed device.

The device contains an allocation-jg block 1 output of a minimum-7 delay selection block 1 will not cause a change in the information of the comparison block A, since the closed key element 5 separates these elements. At the output of the comparison block 6, there will be a signal proportional to ... the intensity of boxing.

If the speed of the locomotive in the boxing process starts to change, by

nor the minimum signal whose inputs are connected to wheel speed sensors (not indicated), and the output to the input of differentiating unit 2, connected by output through integrator 3 to one of the inputs of comparison unit 4 with the memory element at output, the other input of which connected to the output of the key element 5, and the output to one of the inputs of block 6, a comparative value.

the other input of which is connected to the sensor of rotation of the wheel pair) and the output of the block and the output of the delay block 7 are connected to the corresponding inputs of the key element 5.

The device works as follows.

When the locomotive is moving without blocking, two signals arrive at the input of block 6: one directly about the wheel speed sensor, the other from the same sensor, but corresponding to a 3-10 second time delay. At the outputs of the minimum signal allocation unit 1, the differentiating unit 2 and the integrator 3, there are no signals, since there is no change in the rotational frequencies of the wheel sets.

When bobbing, the frequency of rotation of the wheelset increases dramatically. The sensor signal increases in amplitude. A larger signal will be sent to the input of the comparator unit 6, directly connected with the wheel speed sensor, and at its output a voltage. This voltage will go to the control input of the key element 5 and close it. In block 4 of the comparison with the memory element, information will be stored on the rotational speed of the wheel pair until it is boxed. ki since block 7 of the delay did not give the possibility to change this information

signal change will occur. This signal is differentiated by differentiator 2 and will go to the integrator input, where it will be integrated and there will be a signal proportional to the change in the speed of the locomotive. This signal at the corrective input will go to block 4 of the comparison and will change it to correspond

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After termination of blocking, the output signal of comparator unit 6 will become close to zero, key element 5 will open and the circuit will start operating in the considered mode corresponding to the movement of the locomotive without blocking.

Formula of the invention Device for detecting boxing and skid wheel transport-. The device contains a minimum signal selection unit, the inputs of which are connected to the outputs of wheel speed sensors, and the output is connected to a differentiating unit, a delay unit connected by an output to one of the key element inputs, a comparison unit whose output is assigned to a control an input of a key element, and an integrator, characterized in that, in order to increase accuracy, it is provided with a comparison unit with a memory element at the output, one input of which is connected to the output of the key element, the other to the output of the integrator, and the output is to one of the inputs of the comparison unit, the other input of which is connected to the output of the rotational speed sensor of the corresponding wheel pair, the integrator is connected by an input to the output of the differentiating unit, and the input of the delay unit is connected to the output of the sensor

Claims (1)

SUMMARY OF THE INVENTION A device for detecting skidding and skidding of transport- wheelsets. a device containing a minimum signal isolation unit, the inputs of which are connected to the outputs of the wheel speed sensors, and the output is connected to a differentiating unit, a delay unit connected by an output to one of the inputs of the key element, a comparison unit whose output 4Q is connected to the control input of the key element, and an integrator, characterized in that, in order to increase accuracy, it is equipped with a comparison unit with a memory element at the output, one input of which is connected to the output of the key element, the other to the output of the integrator, and the output is to one of the inputs of the comparison unit, the other input of which is connected to the output of the speed sensor of the corresponding wheel pair, the integrator is connected by the input to the output of the differentiating block, and the input of the delay unit is connected to the output of the speed sensor of the corresponding wheel pair.