KR940004407Y1 - Preventing passenger's riding in goods elevator - Google Patents

Abstract

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Description

Passenger boarding prevention circuit of cargo elevator

1 is a conventional freight elevator circuit diagram.

Figure 2 is a cargo elevator passenger boarding prevention circuit diagram of the present invention.

3 is a freight elevator circuit diagram of the present invention.

* Explanation of symbols for main parts of the drawings

90: relay 90b ₁ , 90b ₂ : contact b of relay 90

90a ₁ : contact a of relay 90 T: timer

Tb ₁ : contact b of timer (T) AL: speech synthesizer

DS ₁ , DS _N : Door switch OP ₁ , OP ₂ : OP amplifier

SN: Superconducting sensor TR ₁ , TR ₂ : Transistor

R ₁ -R ₇ : Resistor C ₁ -C ₂ : Capacitor

D ₁ : Diode

The present invention relates to a passenger boarding prevention circuit of a cargo elevator, and more particularly to a cargo elevator to prevent a passenger from boarding so that a variety of cargo can be safely operated to the target floor only without the passenger boarding.

The circuit of the conventional freight elevator uses the contactor a (40 _a1 ) 40 _a2 of the relay 40 driven by the door switches DS ₁ -DS _{N as} shown in FIG. 12) is connected to the elevating auxiliary relay a contact 11X _a1 (12X _A1 ), and b contact 92b1 of the relay 92, not shown, is a rising relay contact UP and a relay contact 40a _3. ) And the relay a contact 12Xa ₁ through the rising relay 12X in common with the relay b contact 11Xb ₁ and ULS, and the contact b of the relay 92 92b2 is the falling relay. The contact DN is connected to the relay b contacts 12X _b1 and DLS in common with the relay a contact 11X _a1 via the contact DN, the relay a contact 40a4, and the relay 11X.

Then, at the a and b contacts 10a ₁ and 10 _b1 of the relay 10, the closing stop switch CLS and the open stop switch (CLS) and the open stop switch (A) through the contacts 102 _b1 and 101 _b1 , respectively. OLS).

Referring to the operation relationship of the conventional freight elevator drive circuit configured as described above, when a door closing signal is generated at any stop floor, the contact a 10 _a1 of the relay 10 is closed and the power supply is connected to the contact b 102 _b1 . It is applied to the relay 101 to excite it.

At this time, until the closing stop switch CLS is completely closed, the relay 101 is driven to completely close the door, and when the door is closed, the door switches (DS ₁ ... DS _N ) on each floor are operated to close the door. When all of the state is closed, the relay 40 is driven.

As described above, in the state where the doors of all floors are closed, the b contact 92 _b1 or the contact 92 _b2 of the call registration coincidence relay 92 (not shown) remains connected, and at the same time, the rising relay contact ( When UP) or the down relay contact DN is in contact with each other, the door closing detection relay 40 maintains the on state in which the auxiliary auxiliary relay 12X or the auxiliary auxiliary relay 11X operates to operate the main motor driving cone. The detectors 11 and 12 can be operated.

However, such a conventional freight elevator is operated immediately upon receiving a "up" or "down" command when the door of the entire floor is closed. It was possible to carry out the defects, which were accompanied by legal problems and risk of death.

Therefore, the present invention enables the detection of passengers aboard by a superconducting sensor installed inside the platform in order to solve the above-mentioned drawbacks so that the operation of the cargo elevator is not made while the passengers are on board. It is an object of the present invention to provide a passenger boarding prevention circuit of a freight elevator that enables the operation of the freight elevator only when not boarding, so that only a variety of cargo can be safely operated to the target floor.

Referring to the present invention in detail by the accompanying drawings as follows.

2 is a view illustrating a cargo elevator passenger boarding prevention circuit of the present invention, and FIG. 3 is a circuit diagram of the cargo elevator of the present invention.

That is, as shown in FIG. 3, the contact a (40 _a1 ) 40 _a2 of the relay 40 driven by the door switches DS ₁ -DS _{N is} connected to the contacts 11 and 12 and the lifting auxiliary relay a. The contact b of the relay 92 is connected to the contact 11X _a1 and 12X _a2 , and the contact b of the relay 92 passes through the rising relay contact UP, the relay contact 40a ₃ , and the rising relay 12X. 12Xa ₂ ) in common with the relay b contacts 11Xb ₁ and ULS, and the b contact 92b2 of the relay 92 is the falling relay contact DN and the relay a contact 40a ₄ and the relay. It is connected directly to the relay b contacts 11X _b1 and DLS in common with the relay a contact 11X _a1 via 11X, and the a and b contacts 10a ₁ and 10 _b1 of the relay 10 are connected. In the cargo elevator circuit configured to be connected to the closing stop switch (CLS) and the open stop switch (QLS) through the contact (102 _b1 ) (101 _b1 ) and the relay (101, 102), respectively, the door switch ( DS ₁ -DS _N ) and relay (4 0b and b contact 90b ₁ and 90b ₂ of the relay 90 of the passenger boarding prevention circuit portion are placed at the connection point between the relay 101 and the closing stop switch CLS, respectively. The contact point 90a ₁ of 90 is connected to the timer T, the contact point bb Tb ₁ of the timer T, and the voice synthesizer AL.

In addition, the relay 90 driving circuit for switching the contact a 90a ₁ and the contact b 90b1 and 90b2 of the relay 90, that is, the passenger boarding detection circuit of the freight elevator, may be used as shown in FIG. For detection, the superconducting sensor SN installed inside the platform of the cargo elevator and the drain terminal D of the superconducting sensor SN are supplied to the power supply terminal Vcc ₂ , and the source terminal S is the condenser C ₁ . Is connected to the inverting terminal (−) of the OP amplifier OP ₁ through the resistor R ₁ and the gate G is connected to the ground side, and the ratio of the OP amplifier OP ₁ is passed through the resistor R ₃ . respectively connected to the inverting terminal (+) and the emitter of the capacitor of the OP amplifier (OP _1), the output stage transistor (TR _1), a transistor (TR ₁₎ is applied with a power supply (Vcc) for connection to the base and collector side of the ( C ₂ ), a diode (D ₁ ), a resistor (R ₄ , R ₅ ) and a capacitor (C ₃ ) is connected to the non-inverting terminal (+) of the OP amplifier (OP ₂ ), the OP amplifier (O The output terminal of P ₂ is configured to be connected to the base terminal of the transistor TR ₂ which feeds back to the inverting terminal (−) and switches the relay 90 to drive the relay 90.

Here, reference numeral R ₂ , R ₆ , R ₇ represents the resistance.

Referring to the effects of the present invention configured as described above with reference to Figures 2 and 3 as follows.

That is, as shown in FIG. 2, when a passenger boards in the platform while the door is open, the superconducting sensor SN installed in the platform detects this and outputs a detection signal through the source terminal S of the sensor SN. The detected signal is again amplified by the OP amplifier OP ₁ and output as an AC voltage.

Therefore, the AC voltage amplified by the OP amplifier OP ₁ is inverted and amplified again by the transistor TR ₁ , and at the same time, half-wave rectified through the capacitor C ₂ and the diode D ₁ , so that the flat DC voltage is equal to the OP amplifier OP. ₂ ) is applied to the non-inverting input terminal (+). At the same time, the OP amplifier OP ₂ is operated as a non-inverting amplifier to conduct the transistor TR ₂ and then energize the relay 90.

In this way, when the passenger boards the inside of the platform, the relay 90 is excited (on), and if the passenger is not in the platform, the relay 90 is not excited.

As described above, when the passenger boards inside the platform, the relay 90 is turned on so that the door closing relay 101 of FIG. 3 is blocked by the b contact 90b ₂ of the relay 90 and the door is kept open. In addition, since the relay 90 is in the on state, the contact a 90a ₁ of the relay 90 and the contact bb Tb1 of the timer T are “on” so that the voice synthesizer AL sets the timer T. During the time, the passenger will be warned of a voice signal.

When the door is open, the relay 40 which detects the full door closing maintains the off state (blocking state) according to the above description, and the relay 11X is opened by this contact 40a ₁ , 40a ₂ , 40a ₃ , 40a ₄ . (12X) does not work, the elevator keeps the door open, the cargo elevator will not operate.

If the passenger comes out, the relay 90 is turned off by the passenger boarding detection circuit of FIG. 2 and the b contacts 90b ₁ and 90b ₂ are turned on to enable normal operation of the freight elevator.

As described above, the present invention provides a superconducting sensor in the platform so that the elevator does not operate when the passenger is in the platform of the cargo elevator so that the operation of the cargo elevator is possible only when the passenger is not boarding. It is a useful design that can prevent various accidents and contribute to carrying out various laws and regulations by allowing various cargos to operate safely to the target floor.

Claims (1)

Each layer doah switch (DS ₁ ... DS _N), the relay 40 and its contact points (40a ₁ -40a ₄₎ and, doah closed relays 101 and 102 and their contact point (101b ₁₎ is driven by a (102b ₂ ), the contactors 11 and 12, the up and down auxiliary relays 11X and 12X, and their contacts 11Xa and b ₁ (12Xa and b ₁ ), and the up and down relay contacts UP. In the freight elevator provided with (DN) and a closing and opening stop switch (CLS) (OLS); A relay b contact 90b1 is connected between the door switch DS ₁ ... DS _N and the relay 40, and in a passenger boarding state between the door closing command relay 101 and the door closing switch CLS. Connect the relay b contact (90b ₂ ) to prevent the closing of the door, a timer (T) for setting a certain time to the relay a contact (90a ₁ ) and the voice synthesizer (AL) informing the passenger boarding on this timer b contact (Tb1) OP amp OP ₁ which connects the relay contacts 90a ₁ , 90b ₁ , 90b ₂ , and installs a superconducting sensor SN in the landing to detect the passenger boarding state. A voltage smoothed as the inverting transistor TR ₁ , the half-wave rectifying diode D ₁ , and the capacitor C ₂ is input to the OP amplifier OP ₂ , and the transistor for driving the relay 90 to this output ( TR ₂₎ in the cargo elevator for passengers, characterized in that the connecting hayeoseo A branch.