KR820001011Y1 - Electric door controler for elevator - Google Patents

Abstract

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Description

ELEVATOR POWER DOOR CONTROL DEVICE

1 is a circuit diagram of the present invention.

2 is a change waveform diagram of the armature current of the electric motor.

3 is a waveform state diagram of the armature current control according to the present invention over time.

The present invention relates to an elevator door opening and closing device in which the speed of the motor is controlled in multiple stages by changing the firing angle of the triac according to the logic characteristics of the IC so that the door opening and closing operation is controlled in multiple stages when the elevator door is opened and closed. .

Conventional elevator door opening and closing device is a mechanical contact CAM (CAM), but controlled by the notch method of changing the contact (contact) to change the resistance value connected in series or parallel to the armature coil of the motor, Due to the mechanical wear of the CAM CONTACTOR due to the continuous contact of the cams, regular parts replacement was inevitable, and power loss was accompanied by variable resistance.

In addition, the conventional mechanical control device is uneconomical because the device itself is enlarged, and a lot of manpower and time is consumed during manufacture and adjustment.

In view of the above mechanical defects, the present invention uses a logic circuit, which is the characteristic of the IC, to convert the motor speed into multiple stages instead of the mechanical control method. In addition, since the device itself is small, it can save manpower and time during manufacturing and adjustment, and it is economical because of low power consumption.

In particular, in the present design, the state signal stored in the RS flip-flop is controlled by the delay timer (t ₁ , t ₂ , t ₃ ) at the set delay time interval so that the speed is controlled in multiple stages when the door is opened or closed. The delayed control is sent to one side of each NORGATE, and at the same time, the reset state signal applied to the pull-flop at the AND gate is reset, while the other side of each NOA gate is delayed by t _4. Since the pulse is delayed and applied at regular time intervals of, t ₅ , t ₆ , t ₇ , each output of Noah gates is multi-stage controlled at set time intervals and applied to the gate of the triac at regular time intervals. By changing the motor, the motor is controlled in multiple stages during the set time, and then driven slowly and normally for a certain time, so that the elevator door can be controlled in multiple stages. The liver uses the IC delay element of the means that is delayed for a predetermined time a state signal)

This will be described with reference to FIG. 1 of the accompanying drawings.

According to the present invention, the set terminal of the flip-flop (FF ₁ ) is connected to an input portion (A) to which a contact switch (S ₁ ) (S ₂ ) and a chattering circuit (CH) are connected when the door is opened and closed. At the output Q, it is connected to one side of the NOR gate NR ₁ having two inputs through the X point and the nat gate N ₁ , and on the other side of the inno gate NR ₁ according to the load power source AC. The synchronized pulse synchronizer P is connected to the other input side of the NOR gate NR ₁ through the delay timer Td ₁ and the nat gate N ₅ .

The output of the flip-flop FF ₁ has two inputs through the set delay timer Te ₁ , the flip-flop FF ₂ , and the nat gate N ₂ at the X point, and the next noah gate NR _2. ) Is connected to one side, and the other end of the next noah gate (NR ₂ ) is connected via a pulse synchronization unit (P) delay timer (Td ₂ ), the nat gate (N ₆ ).

As described above, each NOR gate NR ₃ (NR ₄ )... One side is connected to each set delay timer (Te ₂ , Te ₃ ), each flip-flop (FF ₃ , FF ₄ ) through each nat gate (N ₃ , N ₄ ), and each of NOR gate (NR ₃ ) (NR ₄ ). The other side of the delay timer (Td ₃ , Td ₄ ) and the output of the nat gate (N _7, N ₈ ) is connected via the pulse synchronization unit (P).

Then, to reset each flip-flop (FF ₁ , FF ₂ , FF ₃ , FF ₄ ), each AND gate (A ₁ , A ₂ , A ₃ , A ₄ ) is connected to the X, Y, Z, and W points. a switch (ST) to configure connection between Motor drive control unit (B) configuration, the output of the NOR gate _{(NR 1, NR 2, NR} 3 ...) of the Motor drive control unit (B) is, Motor for AC (M), the diode (D ₁ ) (D ₂ ) contact switch (C ₃ ) (C ₄ ) is configured to be connected to the gate of the triac (TD) of the motor driver (C) consisting of the triac (TD).

Unexplained symbols S ₃ and S ₄ are contact switches interlocked with contact switches (S ₁ and S ₂ ) at door opening and closing, OL ₁ is a relay for detecting the motor overload, ST is a switch for detecting the opening and closing of the door, and a diode D ₁ is For opening the door and diode D ₂ for closing the door.

The chattering circuit CH is a circuit for preventing shaking of the elevator.

2 and 3, the setting delay time t ₁ is a delay time by the setting delay timer Te ₁ , and the setting delay time t ₂ is a delay time and setting by the setting delay timer Te ₂ . The delay time t ₃ is a delay time by the setting delay timer Te ₃ .

The armature current I ₂ is the current determined by the delay time of the delay timer Td ₄ , the armature current I ₂ is the delay timer Td ₃ , the armature current I ₃ is the delay timer Td ₂ , and the electromagnetic The current I ₄ is the armature current determined by the delay of the delay timer Td ₁ .

Referring to the operation and effect of the present invention configured as described above, when opening the elevator door in the present invention, pressing the contact opening switch (S ₁ ) (connected switch (S ₃ ) contact of the motor drive unit is connected) chatter The input signal is applied to the set terminal of the flip-flop FF ₁ through the ring CH to generate a high level signal at the output terminal Q.

This signal maintains high potential until the reset terminal signal is applied according to the characteristics of the flip flop.

The high potential signal becomes a low potential state signal through the nat gate N ₁ at X point, and is applied to one side of the NOR gate NR ₁ having two inputs, and the load power is supplied to the other side of the NOR gate NR ₁ . Since the pulse of the pulse synchronizer P synchronized with AC is delayed for a predetermined time by the delay timer Td ₁ and then applied as a low potential state signal at the nat gate N ₅ , the noar gate NR ₁ is applied. The output becomes high potential and is applied to the gate of the triac (TD) so that the triac (TD) is conducted so that the motor (M) is operated to start the first stage opening. (θ ₁ )

The high-potential state signal from the flip-flop FF ₁ is applied to the setting delay timer Te ₁ at the same time as one side of the AND gate A ₁ having two inputs at the X point, and is delayed for the set delay time. A high potential state signal is applied to the other side of the AND gate A ₁ at the Y point to the output S of the set S terminal of (FF ₂ ), and a high potential state at the output of the AND gate A ₁ . The signal is applied to the reset (R) terminal of the flip-flop (FF ₁ ) and its output (Q) becomes the low potential state and changes from the nat gate (N ₁ ) to the high potential state signal, so that the noah gate (NR ₁ ) It becomes unstable, and the motor (M) stops working for a while, so the first stage of opening is completed.

That is, in one step operation, after the pulse of the pulse synchronizer P is delayed for a predetermined time t ₄ in the delay timer Td ₁ (as shown in FIG. 3), the setting delay time t of the setting delay timer Te ₁ is delayed. ₁₎ becomes a high potential state, the output of the NOR gate (NR ₁₎ is added to the gate of the triac (TD) in the firing angle is changed and the load current as shown (a) flows through this current I ₄ as much as a second degree It can be seen that the armature current A of the motor flows.

In the two-stage door opening, the high-potential signal delayed by the setting delay timer Te ₁ through the X point is completed through the Y point of the flip-flop (FF ₂ ). (N ₂₎ is a low potential state signal from being applied to one side of the NOR gate (NR _2), side quinoa other of the gate (NR ₂₎ pulse synchronization unit (P), a delay timer (Td _2), natteu gate (N _{Since it} becomes a low potential state signal through ₆ ) and is applied to the noah gate NR ₂ , the high potential state signal of the noah gate NR ₂ is applied to the gate of the triac TD so that the motor M is driven. Steps to open the door. (Θ _{2 in} FIG. 3)

In addition, the completion of the two-stage door opening is applied to one side of the AND gate A ₂ having two inputs through the Y-point by the high-potential state signal of the flip-flop FF ₂ output Q, and simultaneously set delay timer Te ₂ ) After the delay set by ₂ ), the high potential state signal of the flip-flop (FF ₃ ) output Q is applied to the other side of the AND gate A ₂ through the Z point, and the high potential state signal of the AND gate output is flip-flop. is applied to the reset (R) terminal of the (FF ₂₎ flip-flop (FF ₂₎ output (Q) it is because the low potential state are tweaked a NOR gate (NR ₂₎ a Motor (M) is temporarily stop the driving Then, the third stage of door opening is started through the Z point at the output of the flip-flop FF ₃ .

That is, in the two-stage operation, the pulse of the pulse synchronizer P is delayed for a predetermined time in the delay timer Td _{2 as} shown in FIG. 3, and then the noah gate within the set delay time t ₂ of the set delay timer Te ₂ . The high-potential state output of (NR ₂ ) is applied to the gate of the triac (TD) so that the firing angle changes so that the load current flows as shown in (a), and this current is equal to the armature current of the motor by I ₃ as shown in FIG. A) is flowing.

Like FIG. 3 at step 3, no opening delay timer (Td ₃₎ for a predetermined time (t ₆₎ NOR gate (NR ₃₎ within the set delay time (t ₃₎ of the set delay timer (Te ₃₎ after a delay during the classic As the above state output is applied to the gate of the triac (TD), the firing angle is changed, and the armature current (A) of the motor flows as much as I _{2 of} FIG. 2, and thus the current of I ₁ of FIG. Flows to complete the door opening operation.

The completion is when connecting a confirmation switch (ST) for the completion of the operation is applied to the high potential signal to the AND gate (A ₄₎ so applied to the reset (R) of the flip-flop (FF ₄₎ flip-flop (FF ₄₎ The output (Q) of the low potential state is confirmed, the complete door opening operation is confirmed.

As described above, the present invention addresses the stages of each logic circuit (flip-flop, end gate, noah gate, and nat gate), and increases the set delay timer and delay timer so that the motor of the driving unit can be controlled at more multi-stage speed. By controlling the delay time and the setting time of the delay timer and the setting delay timer, the current flowing in the armature coil of the motor can be adjusted to the control target value.

And the deceleration operation at the time of closing the elevator door operates in reverse as described above, but by adjusting each delay timer and the setting timer, safety can be achieved at the time of opening and closing the door.

In this way, by using the logic circuit that is the characteristic of IC, the speed of the motor can be changed in multiple stages, thereby achieving stability when opening and closing the door, and there is no mechanical abrasion. Because of its compact size, manpower and time can be saved during manufacturing and adjustment. Especially, the power consumption is low, which is economical effect.

Claims (1)

As shown in the figure, in the speed control apparatus of an elevator electric door, an input circuit part A ₁ composed of a door opening / closing contact switch S ₁ (S ₂ ), a chattering circuit CH, and a flip-flop FF ₁ ), the AND gate (A ₁ ), the nat gate (N ₁ ) is connected to one side of the Noah gate (NR ₁ ) having two inputs and the individual Noah gates (NR ₂ , NR ₃ , NR ₄ ) One side is set delay timer (Te ₁ , Te ₂ , Te ₃ ) flip-flops (FF ₂ , FF ₃ , FF ₄ ), nat gates (N ₂ , N ₃ , N ₄ ), end gates (A ₂ , A ₃ , A ₄ ) are connected to each other, and the delay timers Td ₁ , Td ₂ , Td ₃ , Td ₄ on the other side of the respective NOR gates NR ₁ , NR ₂ , NR ₃ , NR ₄ through the pulse register P. Motor drive control unit (B), motor (M), diode (D ₁ ) (D ₂ ) contact switch (S ₃ ) (S ₄ ) to which nat gate (N ₅ , N ₆ , N ₇ , N ₈ ) is connected , Elevator door control device comprising a combination of the motor drive unit (C) connected to the triac (TD).