CN104134314A - Safety access door - Google Patents

Abstract

The invention provides a safety inspection door, which includes a door panel installed on a cabinet body, a door frame, a storage battery, a time relay, and a self-resetting switch arranged on the door frame and corresponding to the door panel. The door panel is provided with a signal light, The accumulator and the signal lamp are connected through the pressing contact of the self-resetting switch to form a signal lamp circuit; the electromagnetic coil of the time relay and the battery are connected through the initial contact of the self-resetting switch to form a switch circuit, so The output end of the time relay is used as the main switch of the external circuit, and the external circuit is connected with a warning light and an alarm through the initial contact of the self-resetting switch. The safety access door has the advantages of scientific design, high safety and intelligent control.

Description

security access door

technical field

The invention relates to a door, in particular to a safety inspection door.

Background technique

In places with dense circuits such as power plants or maintenance stations, the safety of maintenance work is the top priority. Many power maintenance equipment needs to be powered off for maintenance. After closing the main switch, check its control cabinet. However, in the equipment There are many venues with many switches. Staff who are not familiar with the venues, especially newcomers, are prone to misuse and fail to turn off the equipment switches that need to be repaired, which greatly increases the risk of follow-up work.

In order to solve the above existing problems, people have been seeking an ideal technical solution.

Contents of the invention

The object of the present invention is to aim at the deficiencies of the prior art, thereby providing a safety overhaul door with scientific design, high safety and intelligent control.

In order to achieve the above purpose, the technical solution adopted by the present invention is: a safety inspection door, including a door panel installed on the cabinet, a door frame, a battery, a time relay, and an automatic switch on the door frame and corresponding to the door panel. reset switch, a signal light is provided on the door panel, and the battery and the signal light are connected through the pressing contact of the self-resetting switch to form a signal light circuit; the electromagnetic coil of the time relay and the battery are connected through the self-resetting switch The initial contact of the switch is connected to form a switch circuit, and the output end of the time relay is used as the main switch of the external circuit, and the external circuit is connected with a warning light and an alarm through the initial contact of the self-resetting switch.

Compared with the prior art, the present invention has outstanding substantive features and significant progress. Specifically, the present invention designs a safety inspection door applicable to various inspection control cabinets. Reset switch, the door panel is closed, the self-reset switch triggers the pressure contact, the door panel is opened, and the self-reset switch triggers the initial contact; the two ends of the pressure contact are connected to the battery and the signal light to form a signal light circuit, and the light can be set to a common color, such as green , the signal light represents that the battery has electricity, and the circuit in the safety inspection door is normal; the battery and the electromagnetic coil of the time relay are connected through the initial contact of the self-resetting switch, and the output terminal of the time relay is used as the main switch of the external circuit. When the door is opened, the initial contact is triggered, the electromagnetic coil of the time relay is energized, and the time relay is triggered. After the specified time, the main switch of the external circuit is disconnected, and the cabinet loses power. At the same time, the warning light will keep flashing to remind the staff of the cabinet. If the power is not cut off, the alarm will also send out an alarm message. If the staff does not cut off the power within this period of time, the time relay will automatically cut off the power, which provides further protection for the maintenance work. The signal light is only on when the door is closed.

It has the advantages of scientific design, high safety and intelligent control.

Description of drawings

Fig. 1 is a structural schematic diagram of a safety inspection door in the present invention.

Fig. 2 is a schematic circuit diagram of the safety inspection door in the present invention.

In the figure: 1. door panel; 2. door frame; 3. signal light; 4. self-resetting switch; 5. alarm; 6. warning light; 7. time relay.

Detailed ways

The technical solutions of the present invention will be described in further detail below through specific implementation methods.

As shown in Figures 1 and 2, a safety inspection door includes a door panel 1 installed on the cabinet, a door frame 2, a battery, a time relay 7, and an automatic door panel 1 arranged on the door frame 2 and corresponding to the door panel 1. A reset switch 4, the door panel 1 is provided with a signal lamp 3, the battery and the signal lamp 3 are connected through the pressure contact of the self-reset switch 4 to form a signal lamp circuit, when the door panel 1 is closed, the resistance of the self-reset switch 4 The pressure contact is triggered, the signal light circuit is powered, and the signal light 3 is measured, and the signal light 3 is mainly used to indicate that the battery is normal;

The electromagnetic coil of the time relay 7 and the storage battery are connected through the initial contact of the self-resetting switch 4 to form a switch circuit. The initial contact of the reset switch 4 is connected with a warning light 6 and an alarm 5. When the staff opens the door panel 1 for maintenance, the self-reset switch 4 loses the pressing force of the door panel 1 and rebounds to the initial contact, and the time relay 7 When the electromagnetic coil is energized, the time relay 7 starts counting down, and at the same time, the warning light 6 lights up, and the alarm 5 alarms to warn the staff to pay attention to safety. The cabinet has not been powered off. After the time set by the time relay 7, the external circuit is disconnected. , the equipment in the cabinet loses power and can be repaired. At the same time, the alarm 5 stops alarming and the warning light 6 goes out; The staff can operate with confidence, but the time relay 7 still makes the above actions, double power-off, in order to prevent other staff from performing power-on operations without knowing it.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: the present invention can still be Modifications to the specific implementation of the invention or equivalent replacement of some technical features; without departing from the spirit of the technical solution of the present invention, should be included in the scope of the technical solution claimed in the present invention.

Claims (1)

1. a safety inspection door, comprise the door-plate, doorframe and the accumulator that are installed on cabinet, it is characterized in that: it also comprises the time relay and is located on described doorframe and the self-resetting switch of corresponding described door-plate setting, described door-plate is provided with signal lamp, and described accumulator and described signal lamp connect and compose signal lamp loop by the contact that compresses of described self-resetting switch; The solenoid of the described time relay and described accumulator connect and compose switch loop by the initial contact of described self-resetting switch, the output terminal of the described time relay is as the master switch of external circuits, and this external circuits is connected with warning lamp and alarm by the initial contact of described self-resetting switch.