SU373232A1 - DEVICE EXTRA STAY CONVEYOR - Google Patents

Description

one

Devices for emergency stopping of a conveyor line and signaling about the state of emergency shutdown circuits are known, which are controlled from an arbitrary point of the process line by means of a COMMUNICATION line in

The form of a cable is a cable containing power supply, an emergency shutdown relay, a two-wire communication line with an end diode and sensing elements along it, placed in separate enclosures.

To ensure operation of the device in two modes - with the fixed position of the disconnected line and without it when the cable is exposed in the proposed device, a sensitive element made in the form of a sealed contact controlled by two ferromagnetic shields connected between them mechanically with a traction rod A permanent magnet mounted on the rotary axis is placed between the screens against the magnet and is galvanically connected to the communication line.

FIG. 1 shows the described device, a general view; in fig. 2 - the same, cuts along A-A and BB; in fig. 3 - kinematic diagram of the device; the dotted line shows the position of the magnet and the handle in the off state; in fig. 4 is a schematic diagram of the inclusion of the device in the monitoring and signaling equipment.

The housing / devices are made with two compartments B and G. The compartment B is closed by a lid 2 and serves to accommodate the drive and the contact device, and the compartment G is

self-isolated from the compartment. Into the introductory chamber with a lid 3. In the case there is a folding cable gland 4 with a gland seal 5.

The drive device consists of a through-blade 6 with hooks 7 screwed into the ends, return springs 8, a rotary knob 9 and a roller W. The magnetic system controlling a reed switch 11 contains a magnet 12 and two ferromagnetic screens 13 fixed either directly on the brush 6, or on the non-magnetic plate. 14. The screens are mounted on the brush so that in the initial position they do not shield the reed switch. When the stroke is in one of the sides, the corresponding screen

shields the magnet and the reed switch contacts open. In addition, the reed switch contacts also open when the magnet is rotated 90 ° in any direction from the initial (vertical) position. Reed switch is installed in

special removable capsule 15. The plastic case of the device is protected by a steel shield 16.

FIG. 1 cable cable 17 is installed to operate without latching the open position (right) and with latching off

position (Chleva). For operation with fixation;) tcl: -the 11th position (left), cable loop loop,) placed on the removable fastener 18, hooks onto the pin 19 of the handle 9. When the cable is tensioned, the handle 9, shaft 10 and magnet 12 turn around. The roller 10 is locked in the position “Disengaged by a fixed spring 20, which encloses the grooves on the roller.

In compartment B there are no open current-carrying elements between which leakage could occur if moisture enters. The place is connected - and the wires 21, going from the capsule 15, with the pass-through pin 22, are sealed - filled with a layer 23 of the compound. If necessary, the compartment G can also be sealed after installation with a special casting compound.

The control and signaling apparatus (see Fig. 4) is CO. STANDARD of a stabilized transformer Tp with an output spark coil Wi and an I-hazardous winding Wz, supplying a double-spiral lamp L, ROCK relay. emergency disconnection of the conveyor, relay RKL control of the tape gathering, control of the electronic time relay, alarm relays CP and CPs, sensors K, control of the tape gathering and cable-wire switches K.TV (conventionally only one switch and two sensors control the tape gathering). The opening contacts of the switch K.TV are connected in series with the wire AB, and the wire C-g, which passes in transit through the switch, is connected to two sensors K.SL1 and K.SL2.

In the initial state of the circuit, if the AKCi power supply voltage is present, the ROCK, CPi, and RCL relays are on, and the CP is off.

In the non-latching mode, in the disconnected position of the line, the impact on the cable-wire breaks the power supply circuit of the ROCK relay, which by means of the POC contact disconnects the RKL relay and the CPi relay. Relay CP2 is turned on through a closed contact CP opens the CP contact in the conveyor drive control circuit (turns off the conveyor) and contacts the lamp L for a full glow, signaling that the conveyor is disconnected using a cable switch.

AKS, AKS2 devices are interlocked so that when the next conveyor is disconnected

With the help of a v1 switch KTV in the circuit of the device AKS.2, the CP contact opens and turns off the power supply of the AKS relay CPi. Consequently, the CPg relay triggers again and makes the appropriate switch in the circuit.

With prolonged exposure of the tape to the KSL1 and KSLch sensors with a time delay, the RKL relay is turned off, and the contact of the RKL disconnects the CP relay. The CP and CP relays start to operate in the lulse-pair mode, and the lamp L begins to emit pulsating light. The same effect is observed if the tape derailment triggers the tape deceleration sensor in the AKS unit, but the pulsating signal will be on the AKCi and AKS devices.

If the KTV switch is switched to the operating mode with the line locked in the open position, then the ROK relay is turned off for a long time and the luminescent light shines with full intensity. The switches are structurally designed so that if you walk along the line and check all the switches, then by the position of the handle you can immediately find the switched off switch. If the switch is turned to its original position, the circuit automatically returns to normal operation.

Subject invention

An emergency stop device for a conveyor line and signaling the state of emergency shutdown circuits, controlled from an arbitrary point of the process line, using a CABLE line in the form of a cable, containing a power source, an emergency shutdown relay, a two-wire communication line with an end diode and sensitive elements along it, placed in separate enclosures, characterized in that, in order to fulfill the modes of operation of the device with fixed disconnected, the position of the line and without it when acting on the cable, item made in. A form of sealing contact controlled by two mechanically coupled ferromagnetic shields with a pull rod with a permanent magnet fixed between them fixed on the rotary axis is placed between the magnet cranes against the magnet and is galvanically connected to the link line.

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FIG. 2