SU600300A1 - Device for remote control of face conveyer - Google Patents

Description

one

The invention relates to the field of control of mining machines, in particular, to remote control devices for downhole machines.

A device for remote control of a downhole conveyor is known, which contains a stabilized power source, a relay blocking switch, a positioning switch integrated into a control unit, communication lines, control consoles with end diodes 1.

However, such a device does not provide case zero protection.

It is also known a device for remote control of a downhole conveyor, comprising its stabilized power source, a control relay interlocked by a storage capacitor, resistors, an enable enable relay, capacitor-bridged n connected to a separate secondary winding of a stabilized pitapi source via a rectifier and a break contact of the control relay combined into the control unit, the communication line and the control panel with the end diode 2.

A disadvantage of this device is also the lack of reliability of zero protection.

In order to increase the safety and reliability of the conveyor control, the proposed

2

The device is equipped with control units for the control unit, LEDs, rectifier diodes in the control panels and a multi-action switch, each accumulator capacitor connected to the control relay through the closing contact of the enable enable switch and the contact switch position in its position and directly through the closing switch. the control relay of the adjacent control unit, and the enable enable relay is connected via a serially connected e razmykayuschies contacts of control relay.

In addition, in each control unit, a LED is connected in series with the end diode, which is shunted by a protective diode connected to the opposite end diode. The circuit of the proposed device is shown in the drawing.

The device contains a control unit 1 with several control units and the corresponding consoles 2, 3, 4. The control unit 1 is equipped with a stabilized power source 5, rectifier 6, control relay 7, 8, 9, the windings of which are bridged by capacitors 10, 11, 12 through correspondingly, 1, and short-circuiting contacts 13 (relay 9), 14 (relay 7) and 15 (relay 8) interlocking, contacts 16, 17, 18 of a multi-position switch, resistors 19, 20, 21, contacts 22, 23, 24 of the relay 25 resolution switching on, the winding of which is sealed by a capacitor 26. The control device 1 is connected to the control panels 2-4 through individual communication links 27, 28, 29.

The buttons “Start 30, 31, 32, shunted with their own resistors 33, 34, 35, buttons“ Stop 36, 37, 38, Koitsy diodes 39, 40, 41, LEDs 42, 43, 44 and protective 45, 46, 47.

Using the switch, it is selectively set which of the consoles will be the controller. The remaining consoles automatically become interlocking. So, the non-switch in position I turns the remote control 2 into the remote control, and the remote controls 3, 4 into the remote controllers. Correspondingly, in positions II and 1P, consoles 3 and 4 become control consoles, and the rest - interlocking consoles. Resistors 19, 20, 21 are designed to limit the short-circuit current of the intrinsically safe windings of the power source, and resistors 48, 49, 50 provide for limiting the discharge current of capacitors 10, AND, 12. Using signal lamps 51, 52, 53 n LEDs 42, 43 , 44 it is possible to reduce the time needed to find and eliminate a circuit malfunction.

The device works as follows.

When there is power and a switch in position I, relays 7-9 are disabled, and relay 25 of the enable resolution is switched on from rectifier 6 via the opening contacts 7 (relay 7), 8 (relay 8), 9 (relay 9). The closing contacts 7, 8, 9 of the same relay, connected in series, break the conveyor drive control circuit. Before starting the conveyor, an audible warning signal is given in order (not shown). A device diagram is prepared for controlling the conveyor from a console. The LED 42 of the console 2 continuously emits luminous flux, indicating that the console is a control console. When the contacts are closed, the buttons 31, 32 of the relay 8, 9 do not work, since they are switched off respectively by the contacts 14 (relay 7), 15 (relay 8), the contacts 17, 18 of the switch.

When acting on the starting keypad 30 of console 2, relay 7 is activated. Contact 7 (relay 7) in the circuit of relay 25 opens, but relay 25 is kept for some time in an excited state due to the discharge current of capacitor 26 through the relay coil 25. This time always exceeds time of operation of all control relays. The capacitors And, 12 are always charged if the communications 28, 29 and the elements of the consoles 3, 4 are corrected. The discharge of the capacitor 11 through the closed contact 14 (relay 7) and the winding of the control relay 8 causes it to trip. According to

four

FHC locking 15 (relay 8) relay 9 is activated.

After closure to cycle 13 (relay 9), relays 7, 8, 9 and yripaikiciiHsi remain turned on through controllers 2, 3, 4, respectively. The contacts of the relay 7, 8, 9 in the output circuit are connected to the razren1e; 1Ie ii; i switch-on of the coivicer, which is turned on only after the start of the warning circuit. Signaling

lamps 51, 52, 53 indicate the on state of the relay 7-9. When opened, the nanrnmrn, buttons 38, respectively, switch off the relays 9, 8, 7. Relays 7-9 remain in the off position until sending a new

commands from remote control 2 or another remote control. In a similar way, the conveyor is controlled from the consoles 3, 4 in the mode when they become controllers. When locked in the off position,

for example, the buttons 38 become impossible to turn on the conveyor, since the capacitor 12 is uncharged and the relay 9 does not operate. Malfunction in Relay 7-9

25 provides a protective device failure. The disabled state of the relay 25 does not allow the conveyor to be switched on from the control panel. An open circuit shorting of the communication lines 27, 28, 29 does not allow the corresponding relay to be turned on, i.e., a protective failure occurs in the device, which precludes the self-switching of the conveyor or control unit.

Claims (2)

1. A device for remote control of a downhole conveyor containing stabilized power inaccuracy, equipotential relay for shunted by a storage capacitor, resistors, switch-on permission relay bounced by a capacitor and connected to a separate secondary winding of a stabilized power source via a rectifier and rectifier not connected the control relay, the communication line and the control panel with an end diode, which is so that, in order to increase the safety and reliability of the control of the conveyor, it is equipped with control units of the number of consoles), LEDs, protective diodes in control pulses and myogoside not isolating switch, and in each control unit I have a codensato) 11o ;. connected to the control relay through the closing contact of the relay is switched on and connected to the multipass switch in its corresponding position) But through the closing contact of the relay is unran-lenn of the neighboring unit of the liravleni, and the relay of the disengagement of 15K.pochheni is connected through a connected disconnected disconnector; understand that all the contacts of the relay are equalized. 2. Device but n. 1, that is, the LED shunted by a protective diode connected opposite the terminal diode is connected in series with the end diode in each control unit in series with the end diode. Sources of information taken into account when exertizing 1. Author's testimony USSR L 458663, class E 21C 35/24, 1973. 2. USSR author's certificate A 444879, cl. E 2IC 33/00, 1973.