KR890004733Y1 - Door switch circuit for electric railroad car - Google Patents

Abstract

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Description

Electric train door reopening circuit

1 is a conventional perspective view.

2 is a circuit diagram of the present invention.

3 is a schematic explanatory diagram of an access door.

4 is an enlarged view of the main part (d) of FIG.

* Explanation of symbols for main parts of the drawings

A: Door or: Bracket

C: Engine part A _1- A ₄ : Close valve solenoid

B ₁ -B ₄ : Open valve solenoid C ₁ C ₁₁ -C ₁₄ : Reopening relay and its contacts

D _1, D ₁₁ : Selectable reopening relay and its contacts

SB ₁ -SB ₄ : Switch Box

SW ₁ , SW ₂ : Re-closing switch and optional re-opening switch

V ₁ , V ₂ : Close valve and open valve

T ₁ , T ₂ : Closed air tube and open air tube

The present invention relates to the entrance door re-opening circuit of the electric train.

The entrance doors of electric trains consist of four each on the left and right sides of each train, and only four doors on one side are automatically opened and closed.

The conventional door automatic opening and closing control circuit for this is configured as shown in Figure 1, which will be described as follows.

When the door is closed, foreign matter is inserted between the doors so that the door is not completely closed.

At this time, when the door reopening relay C ₁ is driven by using the door reopening switch SW ₁ , the close valve solenoid A ₁ -A ₄ and the open valve solenoid of the angler are contacted by its contact C ₁₁ . (B ₁ -B ₄ ) is operated.

Accordingly, the door close valve V _{1 of} FIG. 4 is closed and the door open valve V ₂ is opened to open the door by the door engine part C. FIG.

On the other hand, when the door re-opening switch SW ₁ is turned off, the door close valve solenoids A ₁ -A ₄ and the open valve solenoids B ₁ -B ₄ are turned off, so that the door open valve V ₂ is The door is closed and the door close valve V ₁ is opened to close the door.

However, in such a conventional control circuit, when a foreign material is inserted in any one of the four doors, the door that does not need to be reopened and closed is reopened and reopened, so that such a shape may be generated in another door again, and the heating and cooling efficiency is poor. There was a problem that is degraded.

The present invention has been devised in view of such a point, and when foreign matter is inserted into the entrance door, only the door is reopened and closed.

Hereinafter, the configuration of the subject innovation according to the accompanying drawings.

A reopening relay (C), each controlled by a reopening switch (SW ₁ ) in the closed and open valve solenoids (A ₁ B ₁ ), (A ₂ B ₂ ), (A ₃ B ₃ ), (A ₄ B ₄ ) ₁₎ each point of (C ₁₁ -C ₁₄₎₎ and each of switch boxes (SB _1, each contact (S ₁ -S ₄₎ of -SB ₄₎ connected in common, and wherein each contact (S ₁ -S ₄₎ of the Common connection is made to the contact point D ₁₁ of the selective reopening and closing relay D ₁ controlled by the selective reopening and closing switch SW ₂ , and each of the switch boxes SB _{1 to} SB ₄ is installed in the engine unit (C). To be controlled by the bracket (b) fixedly installed at one side of the door (a).

Referring to the operation and effects of the present invention configured as described above are as follows.

In FIG. 4, when the door is closed, the bracket (B) operates the switch box SB ₄ so that its contact point S ₄ is turned off, and when the door is opened, its contact point S ₄ is opened. Is turned on, and each contact is operated in the same manner as above.

Therefore, when foreign matter is inserted into any one or more of the four doors, the door is not completely closed, so that the switch box SB ₄ does not operate.

For example, when the switch box SB ₄ of FIG. 3 fails to operate, its contact S ₄ is turned on.

At this time, when the selective reopening switch SW ₄ is turned on, the switch reopening relay D ₁ is operated, and thus the contact D ₁₁ is turned on, so that the close and open valve solenoids A ₄ and B ₄ are driven. The close valve V _{1 of} FIG. 4 is closed and the open valve V ₂ is opened.

Therefore, the compressed air through the open valve (V ₂ ) is applied to the engine unit (C) through the open air tube (T ₂ ) to re-open only the door, that is, the door in which the switch box (SB ₄ ) is installed.

On the other hand, when the selective re-opening switch SW ₂ is turned off, the close and open valve solenoids A ₄ and B ₄ are turned off, so that the close valve V ₁ is opened and the off valve V ₂ is closed.

Therefore, since the compressed air through the close valve (V ₁ ) is applied to the engine unit (C) through the closed air tube (T ₁ ), the door is closed again.

On the other hand, when the re-opening switch (SW ₁ ) is turned on / off, the re-opening relay (C ₁ ) is turned on / off accordingly, each contact point (C ₁₁ -C ₁₄ ) of the on / off, thereby closing and opening each door Since the valve solenoids A ₁ -A ₄ and B ₁ -B ₄ are on / off, the entire door is opened and closed again at a time.

Since the present invention selectively reopens and closes only the corresponding door in which an accident occurs, it is possible to prevent unnecessary accidents caused by the door reopening and closing operation in advance in a door that does not have an abnormality. There is an effect which can prevent a fall.

Claims (1)

In the door re-opening circuit of the train, each of the closed and open valve solenoids (A ₁ , B ₁ ), (A ₂ , B ₂ ), (A ₃ , B ₃ ), (A ₄ , B ₄ ) Each contact point of each switch box (SB ₁ -SB ₄ ) provided at the temporary contact point C ₁₁ -C ₁₄ of the reopening / relay relay C ₁ controlled by the reopening switch SW ₁ and each door engine unit (C). (S ₁ -S ₄ ) are commonly connected, and each of the contacts (S ₁ -S ₄ ) is common to the contacts (D ₁₁ ) of the selective reopening / relay relay (D ₁ ) controlled by the selective reopening switch (SW ₂ ). Electric train door re-opening circuit, characterized in that by connecting.