KR840001195Y1 - Driving circuit of cargo elivator - Google Patents

Abstract

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Description

Bottom plate driving circuit of cargo type elevator

1 is a hydraulic circuit diagram of the hydraulic device of the present invention.

2 is a driving circuit diagram of the present invention.

* Explanation of symbols for main parts of the drawings

A, B, C, D, E: Relay 1: Support Driven Plunger

2: inclined plate driving flanger 10, 20, 30, 40: button

The present invention relates to a bottom plate operating circuit of a freight elevator that allows a stopper mounted on the bottom of the bottom plate of the elevator and an inclined plate to be moved by the operation of a hydraulic circuit when carrying a cargo as an elevator. .

In conventional freight elevators, when cargo is loaded and arrives on the operating floor and the elevator door is opened, the cargo is usually unloaded from the elevator by manpower or forklift, but according to the shape of the cargo or the structure of the building, Frequently, it was difficult to unload cargo in an elevator.

In view of the above, the present invention connects the contacts of the elevator door opening / closing relay, support switch, and inclined plate switch and several buttons to drive the relays for the hydraulic valve. When reached to the inclined plate by adjusting the hydraulic pressure of the inclined plate to be inclined to draw the cargo easily in the elevator, which will be described in detail by the accompanying drawings as follows.

1 is a hydraulic circuit diagram of the hydraulic device of the present invention installed under the bottom plate of an elevator. First, the limit switches L ₁ and L ₂ are fixed to one side wall of the support driven flanger 1 at an appropriate position up and down. When the support 3 is fully raised by the flanger 1, it is configured to drive the limit switch L ₁ by the limit switch cam 5 as in the 2-dot chain line notation. The limit switches L ₃ and L ₄ are fixedly installed at an appropriate position up and down on one side wall of the inclined plate driving flanger 2, and when the inclined plate 4 is completely inclined by the flanger 2, It is configured to drive the limit switch (L ₄ ) by the limit switch cam (6), as shown in the dashed line notation, wherein when the magnetic (a) is excited, the lift valve (A ') is opened to Support drive flanger (1) goes down The furnace support (3) is configured to ascend, and when the magnetic (b) is excited, the lowering valve (B ') is opened to lower the hydraulic pressure of the support drive-driven flanger, so the support drive-driven flanger (1) is lowered. (3) is configured to descend. And the structure of maintaining the inclination and horizontal of the inclined plate 4 is configured to open the inclined valve (c ') or horizontal valve (D') when the magnetic (c) (d) is excited as in the case of the support (3) As a result, the inclined plate driving flanger 2 is raised and lowered by hydraulic pressure so that the inclined plate 4 can be inclined and leveled.

And the configuration of the relay (A) (B) (C) (D) capable of exciting the magnetic (a) (b) (c) (d) is an abnormality of the safety device of the elevator as shown in FIG. Check the presence (CHEC K), if there is no error, the rising time of the support (3) of the support (3) through the contact of the relay (M ₁ ) and the switch (S / W) of the relay (CLOSE) is always closed , The contact point L ₄ -a of the limit switch L ₄ , the relay A, and the contact point L ₁ -b of the limit switch L ₁ are connected in series so that the relay A can be driven. When the support 3 is lowered from the contact point K ₁ of the relay (not shown) which checks the door opening state of the elevator, the button 20 contacts the relay B and the limit switch L ₂ . It is connected in series with (L ₂ -b), the button 30 at the time of the inclination of the inclined plate 4 at the contact (K ₁ ), the contact (D ₁ ) of the relay (D), the relay (C), the limit switch (L) _second contact (L ₂ -a) of a), the contact (L ₃ -b) of the limit switch (L ₃₎ is The column is configured so that the relay (B), (C) can be driven.

And the horizontal button 40 of the inclined plate 4 is the contact (L ₁ ) and the contact (C ₁ ) of the relay (C), the relay (D), the contact (L ₄ -b) of the limit switch (L ₄ ) This serial connection is configured to drive the relay (D). Therefore, the contact closed by the driving of the relay is a contact (a ), The contact that is opened by driving the relay (b) ), The reference numeral A _1, was the title B _3, C _3, contacts of the D ₃ is a relay (A) (B) (C ) (D) is a contact which is operated when the driving magnet driving the hydraulic drive check valve It is for driving the relay (E).

In addition, the contacts of A ₁ and B ₂ constitute a holding circuit, so that when the button 10 is pressed and released, the relay A is continuously driven through the contact A ₁ and the contact B ₂ when they are immediately returned. It is configured. And B _1, A ₂ of the contact the holding circuit is also configured to release the button (20). When released, relay B is configured to continue to drive through contacts B ₁ and A ₂ . F ₁ and F ₂ are contacts corresponding to the number of floors of the elevator operating floor.

In addition, the contacts K ₂ and K ₃ are contacts a where the relay (not shown) for confirming the door opening / closing state of the elevator is driven (the door is in a closed state in a closed state.) When explaining the effect of the design as follows.

Normal elevator requires a lift was normally operated when you want to handle the driver while the normal operation carries any layer (F ₁ layer and the F _2, F ₃ layer) roll (ROLL) type of cargo, such as a newspaper for resin or redirected in It is called a layer (F ₁ layer, F ₂ layer, or F ₃ layer).

The next time the selection key switch (S / W) with cargo (Roll) driving direction, the hydraulic Motor (M) for being driven, the contact points (F ₁ ...... F ₂₎ of the selected layer is a short-circuit condition requiring Press the button 10 of the support 3 for supporting the roll-type cargo after loading the roll-type cargo in the floor, and the limit switch L ₄ is connected because the inclined plate 4 is kept horizontal. State, that is, the limit switch contact (L ₄ -a) is connected, the limit switch (L ₁ ) of the support (3) is in the open state, so that the power supply button 10, the contact (L ₁ -b) is connected Supplied as -L ₄ -aAL ₁ -b.

Therefore, when the button 10 is pressed and released, the button 10 immediately returns, but at this time, since the power is energized in the order of A ₁ -B ₂ -AL ₁ -b, the relay (A) until the support drive flanger 1 is raised. When the relay A continues to drive and the magnet A is excited, the lift valve A 'is opened and the support drive flanger 1 is lifted by the voltage, so the support 3 is raised to roll the cargo. It is supported not to move. Here, when the door of the elevator is closed while the rolled cargo is loaded, the contact K ₁ is short-circuited and always raises the support-driven flanger 1 so that the support 3 is raised so that the rolled cargo is the door side plate (not shown). Omit).

Next, when the cargo arrives on the desired floor, the elevator door is opened while the cargo is supported by the support 3 (the contact point of K ₁ is connected) and when the button 20 is pressed, the limit switch L ₂ is opened. the state where the power to the (L ₂ -b connection) K _1-button (20) is supplied to the relay (L) -L ₂ -b, and releasing the button (20). Even if it is released, the power continues to be energized in the order of B ₁ -A ₂ -BL ₂ -b, so the relay (B) conducts until the support drive flanger (1) descends to excite the magnetic (b) to lower the valve (B '). ) Is opened and the hydraulic pressure is lowered, so that the supporter-driven flanger 1 is lowered so that the support 3 is lowered to bring down the rolled cargo. (The limit switch L ₂ is connected at this time).

Pressing the button 30 in order to incline the inclined plate 4, in this state, power is K ₁ - button 30 ₁ -CL ₂ -D ₃ to the through -aL -b relay (C) the drive swash plate (4) The inclined magnetic plate (C) is excited to open the inclined valve (C '), the inclined plate 4 is inclined while the inclined plate driving flanger (2) is raised by hydraulic pressure, so that the roll-type cargo can be easily withdrawn from the elevator will be.

Therefore, when pressing the button 30, the angle of inclination should be changed according to the size of the roll-type cargo, so there is no need to configure the holding circuit separately, and when the elevator user determines the size of the cargo and releases the button 30, the circuit is cut off and the inclined plate (4). ) Can be adjusted and the power is relayed through the button 40-C ₁ -DL ₄ -b when the button 40 is pressed to take the cargo out of the elevator and keep the inclined plate 4 horizontal again. Since (D) is driven, the magnetic (d ') is excited, the horizontal valve (D') is opened, the hydraulic pressure is lowered, and the inclined plate (4) is horizontally annularly inclined while the inclined plate driving flanger (2) descends. .

Here, when the door of the elevator is closed in the state of loading the roll-type cargo, the contact (K ₃ ) is short-circuited to always lower the inclined plate drive flanger 2 to maintain the inclined plate 4 in a horizontal state.

As described above, the present invention connects the contacts such as the door opening / closing relay of the elevator, the support switch, and the inclined plate switch and the several buttons to drive the hydraulic circuit. It is the bottom plate driving circuit of the elevator.

Claims (1)

(Correct) In a known elevator using a support and an inclined plate, the contacts L ₁ -b, L ₂ -a, L ₂ -b and the inclined plate 4 of the switches L ₁ and L ₂ of the support 3. Contacts (L ₃ -b, L ₄ -a, L ₄ -b) of the switch (L ₃ , L ₄ ) of) are connected to the relays (A, B, C, D) and the magnetic (a, b, c, d) the bottom plate operating circuit of a cargo elevator constructed to excite;