SU984901A1 - Apparatus for preventing slipping of locomotive wheel pairs - Google Patents

Description

(54) DEVICE TO ELIMINATE THE BOXING OF WHEELED HEAT TRUCK:

one

The invention relates to railway transport and is intended to protect the wheelsets of mainline diesel locomotives.

A device for unwinding wheelsets of a locomotive is known, comprising sensors for rotational speeds of wheelsets, a differentiation unit whose output is connected to an input of a delay unit connected by an output to one of the inputs of a key block, the other input of which is connected to a threshold element, and the output through a memory block - with one of the inputs of the integrator, and the adder I.

The known device is intended for a single wheelset of a locomotive, therefore the number of driving wheelsets determines the number of known devices used in a diesel locomotive. This complicates the design of the anti-baking system and reduces its reliability. In addition, the known device does not allow affecting the diesel locomotive power transmission, taking into account the number of wheelsets involved in boxing. -

The purpose of the invention is to increase the reliability of the device.

The goal is achieved by the fact that the device is equipped with additional differentiating units, a minimum signal extraction unit, an additional integrator and an OR logic element, the output of which is connected to the input of the threshold element, and the inputs to the outputs of both integrators connected to the corresponding inputs of the adder, and one of the inputs an additional integrator is connected to the output of the memory block, and the other inputs of both integrators are connected via additional differentiating blocks with corresponding dates frequency.

 A pair of wheel pairs connected to the inputs of a minimum signal allocation unit connected by an output to an input of a differentiating unit. The drawing shows a block diagram of a device for disabling the locking of wheel pairs of a locomotive.

The device contains sensors 1 of rotational speed of wheel pairs connected to the inputs of additional differential 1 units 2 and the inputs of block 3 for selecting the minimum signal which output is connected to input of differentiating unit 4 connected by output to input of delay unit 5, which through key unit 6 is connected to memory unit 7 ti, while the key block 6 is also connected to the threshold block 8, as well as the integrator 9, the additional integrator 10, the logical element OR 11 and the adder 12.

When one of the wheel pairs is boxed, the rotational speed sensor 1 coupled to this wheel pair increases its stress. At the output of the additional differentiating unit 2, a signal appears that is fed to one of the inputs of the additional integrator 10. Since the remaining wheelsets retain the clutch, the output of the minimum signal extracting unit 3 has a signal proportional to the speed of the locomotive. At the outputs of the differentiating unit 4, the delay unit 5, and the memory unit 7, the signals are zero. The output signal of the 7 p.m. unit enters the second input of the additional integrator 10, which is connected with the boxing wheel pair. At the output of this block, a signal appears, which through the logical element OR 11 and the threshold block 8 enters the input of the key block 6, locking it. In memory block 7, information is stored on the derivative of a voltage proportional to the speed of the locomotive when blocking any number of wheel pairs. The output signal of the additional integrator 10 is fed through the adder 12 to the excitation control unit of the traction generator and reduces the power delivered to the traction electric motors.

When all wheel pairs are boxed, the system works in a similar way due to the fact that in block 5 of the delay there is information about the speed of a diesel locomotive preceding 1.5 seconds from boxing.

Compared with the known anti-blocking device, the proposed device for unwinding wheelsets of a powerful mainline diesel locomotive allows influencing the transmission of a diesel locomotive taking into account the sum of the intensity of blocking all wheelsets, which simplifies the scheme by reducing the number of blocks used.

Claims (1)

Q formula A device for de-coupling wheelsets of a locomotive, comprising sensors for rotational speed of wheelsets, a differentiation unit whose output is connected to the input of a delay unit connected by an output to one of the inputs of the key unit, the other input of which is connected to the threshold element, and the output through the memory unit with one of the integrator inputs, and an adder, characterized in that, in order to increase reliability, it is equipped with additional differentiating units, a minimum signal extraction unit, and additional integrate the OR and the logical element OR whose output is connected to the input of the threshold element, and the inputs to the outputs of both integrators connected to the corresponding inputs of the adder, and one of the inputs of the additional integrator under,. the keys to the output of the memory block, and the other inputs of both integrators are connected via additional differentiating blocks with the corresponding wheel speed sensors connected to the inputs of the minimum allocation unit the signal connected to the output of the differentiating unit. Sources of information taken into account in the examination 1. USSR author's certificate in application No. 2874380 / 24-11, cl. In 60 L 3/10. 01/28/80.