SU421740A1 - - Google Patents

Description

(54) DEVICE FOR CONTROL OF UNITS OF MECHANICAL SYSTEMS OF DIGGING MACHINES

In n tv

ZNONERTO FUND

34-II gradation of the monitored parameter for the second channel;

The threshold trigger level 35 is (PE) AND;

PE12 level 36;

37 is the trigger level of PE 14;

38-level triggered PE 15.

The device works as follows.

Signals arriving at threshold elements 10, 11, 12, and 13 correspond to gradation II. During the training period of the device, in the reference voltage circuit for the channel of the first operating frequency fi, the following trigger levels of the threshold elements are set: PE I-1P gradation, PE 12-II gradation, and for the channel of the second operating frequency fz-PE 14-III, PE 15-I gradation.

As a result of actuation, PE 12 supplies voltage to the winding of relay 15 and voltage +27 8 from power supply 26 through normally open relay contacts 15 and normally closed contacts of relay 14 to the winding of switching element 19.

At the same time, in the channel of the second operating frequency / 2 no threshold element should operate. In this case, the voltage + 27V through the normally closed contacts of the relay 17 is supplied to the normally open contacts of the switching element 19. When it is triggered, the voltage + 27e is supplied to the indicator indicator indicator 22 II gradation.

Let the controlled parameter belong to the I gradation, - “checkpoint gap in the norm (31, 33). At the same time, at the second operating frequency fz, PE 15 is triggered and PE 14 is not triggered. 17 and the normally closed contacts of the relay 16 is supplied to the normally open contacts of the switching element 20.

At that time, not a single threshold element triggers in the channel of the first operating frequency / 1, and the voltage +27 in from the power supply 26 through the normally closed contacts of the relay 15 goes to the winding of the switching element 20. The indicator light of the 21 I gradation lights up.

And finally, the controlled parameter corresponds to the III gradation in one of the shchestrenok

“A broken tooth (29, 32). In this case, at the first operating frequency / i, PE 11 and PE 12 are triggered, the voltage + 27V from the power supply 26 through normally open relays 15 and 14 is applied to the winding of the switching element 18.

At the second operating frequency fz, both threshold elements 12 and 13 and the voltage + 27V from the power supply unit 26 are also triggered through the normally open contacts of the relay 16 and

17 enters the normally open contacts of the switching element 18. As a result, the indicator lamp 23 of the III gradation lights up (the tooth is broken). Filters 4 and 5 are tuned within the range of permissible variation of operating frequencies for this type of mechanism. They are designed as a removable unit. A set of tunable removable filters allows you to quickly prepare a device for diagnosing various types of mechanisms.

P ip e dme t inventions

A device for controlling mechanical systems of earth-moving machines such as a rotor excavator, including a vibration sensor, amplifiers and detectors, characterized in that, in order to simplify the device, filters connected to additional amplifiers are connected to amplifiers, the outputs of which are connected to detectors to which in turn, threshold elements are connected with relay-thyristor outputs connected via switching elements assembled according to the scheme “And with indicators.

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