CN203931885U - With the electric coding lock of self-checking function - Google Patents

Abstract

This utility model belongs to the field of electrical equipment and relates to an electrical coded lock with a self-testing function. The electrical coded lock with self-testing function of this utility model includes a locking circuit set in the power supply circuit, and a detection circuit set in the inner cavity of the electrical coded lock. The detection circuit includes a switch and an indicator light, which are connected in series in the power supply circuit. The switch is an auxiliary contact controlled by the operating mechanism of the circuit breaker. This utility model can display the open/closed status of the circuit breaker and prevent accidental operation.

Description

Electric coded lock with self-test function

technical field

The utility model belongs to the field of electric equipment and relates to an electric coding lock with a self-checking function.

Background technique

The electrical coding lock used in the field of preventing misoperation of high-voltage electrical equipment is directly connected to the operating circuit of the circuit breaker. Its general working principle is: the special key operates the electric coded lock under the permitted conditions, and the internal circuit of the electric coded lock includes a pair of closed contacts, which are used to switch on or off the electric operation circuit of the circuit breaker. After the contacts of the electrical coding lock are closed, the circuit breaker can perform electric closing and opening operations, and the closing and opening of the circuit breaker are controlled by the operating mechanism of the circuit breaker.

Before operating the electrical coding lock, the operator must know what state the circuit breaker is in, and then perform subsequent operations. However, the existing electrical coded locks cannot identify the opening and closing state of the circuit breaker, which is prone to misoperation and threatens the safety of people and equipment.

Contents of the invention

The technical problem to be solved by the utility model is to provide an electric coding lock with a self-checking function that can display the opening and closing state of the circuit breaker.

The electric coding lock with self-checking function of the utility model includes a blocking circuit arranged in the power supply circuit, and a detection circuit is arranged in the inner cavity of the electric coding lock, and the detection circuit includes a switch and a switch connected in series in the power supply circuit. The signal lamp, the switch is an auxiliary contact controlled by the circuit breaker operating mechanism.

A transmitting device capable of controlling the locking circuit of the electrical coded lock is also connected in series in the detection circuit, and the electrical coded lock with self-checking function includes a device which is arranged in the key of the electrical coded lock and can receive the signal of the infrared transmitting device. Signal receiving device.

The detection circuit is also connected in series with a master switch for manually controlling the on-off of the detection circuit.

The utility model has the advantages of designing a separate set of circuits inside the original electric code lock to display the opening and closing state of the circuit breaker, and being provided with an infrared emitting device for controlling the locking circuit of the electric code lock to prevent misoperation. In this way, accidents can be avoided.

Description of drawings

Fig. 1 is the principle diagram of the operating circuit of the utility model electrical coded lock;

Fig. 2 is a schematic diagram of the detection circuit of the electric coded lock of the present invention.

Detailed ways

As shown in the figure, an electrical coded lock with a self-test function is provided with a detection circuit in the inner cavity of the electrical coded lock 5, the detection circuit includes a switch 1 and a signal lamp 2, and the switch 1 and the signal lamp 2 are connected in series In the power circuit, the switch 1 is controlled by the circuit breaker operating mechanism 6. When the circuit breaker is in the closed state, the circuit breaker operating mechanism 6 will drive the switch 1 to close, and the signal lamp 2 will light up to remind the operator that the circuit breaker is in the closed state.

The detection circuit is also connected in series with an infrared emitting device 3 that can transmit signals to the key of the electric coded lock. The electric coded lock with self-checking function includes a signal receiving device 7 that can receive the signal of the infrared emitting device 3. When the circuit breaker When it is in the closed state, the infrared emitting device 3 sends out a signal to control the blocking circuit of the electric coded lock to be unable to act and prevent misoperation.

The detection circuit is also connected in series with a main switch 4 for manually controlling the on-off of the entire detection circuit.

When the self-checking function is needed, the main switch 4 is manually closed, and whether the signal light 2 is on or not is used to judge whether the circuit breaker is in the closed state at this time, and then perform subsequent operations.

Claims (3)

1. An electrical coded lock with self-test function, including a blocking circuit set in the power circuit, characterized in that: a detection circuit is set in the inner cavity of the electric coded lock (5), and the detection circuit includes a series A switch (1) and a signal lamp (2) in the power circuit, the switch (1) is an auxiliary contact controlled by the circuit breaker operating mechanism (6). 2. The electric coded lock with self-checking function according to claim 1, characterized in that: the detection circuit is also connected in series with a transmitting device (3) capable of controlling the locking circuit of the electric coded lock, and the electric coded lock with self-checking function The functional electrical coded lock includes a signal receiving device (7) arranged in the key of the electrical coded lock and capable of receiving signals from the infrared emitting device (3). 3. The electrical coded lock with self-inspection function according to claim 1, characterized in that: said detection circuit is also connected in series with a master switch (4) for manually controlling the on-off of the detection circuit.