CN209328744U - A circuit breaker with external double isolating switch - Google Patents

Abstract

The utility model discloses a kind of breakers of external switch with double-isolation, upper wiring board is installed above breaker, breaker two sides are equipped with common disconnecting switch and reserve isolators, connection component is equipped on common disconnecting switch and reserve isolators isolation axis, latch lever is provided between connection component, common inlet wire route is connected with the lower terminal plate of common disconnecting switch, spare inlet wire route is connected with the lower terminal plate of reserve isolators, outlet route is connected with the upper wiring board of breaker, when common inlet wire route needs interruption maintenance or restores electricity, operation handle only need to be manually operated by common disconnecting switch separating brake or combined floodgate, latch lever can drive reserve isolators combined floodgate or separating brake, the switching of inlet wire route can be completed, it is simple to operate, it only needs in common disconnecting switch or reserve isolators and open circuit It is equipped between device and chain axis is isolated, the interlock function of breaker Yu two sides disconnecting switch can be realized, structure is simple.

Description

A circuit breaker with external double isolating switch

technical field

The utility model relates to a circuit breaker with external double isolation switches.

Background technique

At present, the Chinese utility model patent with the authorized announcement number CN205845754U discloses a double-isolated prop circuit breaker for single-circuit power supply. The circuit breaker is equipped with isolating switches on both sides, but this circuit breaker can only be used in single ( One incoming line, one outgoing line) circuit, it cannot be applied to occasions with backup lines.

The Chinese utility model patent with the authorized announcement number CN203150466U discloses a double isolation circuit breaker, which is equipped with isolating switches on both sides. Although this circuit breaker can be applied to occasions with backup lines, there is no linkage between the isolating switches. The isolation on both sides of the device requires separate manual operation and interlocking devices are required between the circuit breaker and the circuit breaker. This structure is complex and inconvenient for on-site staff to operate. Therefore, it is imperative to design a circuit breaker that can be applied to occasions with backup lines, and the double-sided isolating switch has an interlock function and is easy to operate.

Utility model content

The purpose of the utility model is to provide a circuit breaker which can be applied to occasions with backup lines, and the double-side isolating switch has an interlocking function and is easy to operate.

In order to achieve the above object, the utility model provides the following technical solutions:

A circuit breaker with external double isolating switches, comprising: operating handle 1, spare isolating switch 2, pin 3, slave isolating shaft 4, circuit breaker 5, connecting rod 6, connection assembly 7, common isolating switch 8, main isolating shaft 9. Upper terminal board 10, isolation chain shaft 11, chain rod 12, lower terminal board 13, limit device 14, characterized in that: upper terminal board 10 is installed above circuit breaker 5, and common isolation The switch 8 and the standby isolating switch 2, the commonly used isolating switch 8 and the standby isolating switch 2 are respectively provided with a main isolating shaft 9 and a slave isolating shaft 4, the commonly used isolating switch 8 and the spare isolating switch 2 are equipped with a lower wiring board 13, the main Both the isolation shaft 9 and the isolation shaft 4 are equipped with a connection assembly 7 and an operating handle 1, the connecting rod 6 is fixed on the connection assembly 7 through the pin 3, and one end of the chain rod 12 is fixed on the isolation chain shaft 11 on the circuit breaker 5 One end passes through the common isolating switch 8 and is tangent to the limit device 14 on the main isolating shaft 9 .

The connecting assembly 7 is composed of a shaft sleeve 702 and a crank arm 703 .

The shaft sleeve 702 is provided with a shaft hole 701 inside, and the crank arm 703 is provided with a pin hole 704 .

The beneficial result of the utility model is that a chain bar 12 is arranged between the common isolating switch 8 and the spare isolating switch 2, and the common incoming line is connected with the lower wiring board 13 of the common isolating switch 8, and the spare incoming line is connected with the spare isolating switch The lower terminal block 13 of 2 is connected, and the outgoing line is connected with the upper terminal block 10 of the circuit breaker 5. When the common incoming line needs power outage maintenance, only need to manually operate the operating handle 1 to open the common isolating switch 8, and the chain lever 12 Drive the spare isolating switch 2 to close, and then start to overhaul the common incoming line. After the common incoming line is overhauled, you only need to manually operate the operating handle 1 to close the common isolating switch 8, and the chain lever 12 drives the spare isolating switch for 2 minutes. When the power supply of the common incoming line is restored, the line switching can be completed by operating only one side of isolation, which is simple and convenient to operate; only an isolation interlock shaft 11 needs to be provided between the common isolating switch 8 or the spare isolating switch 2 and the circuit breaker 5, that is, The interlock function between the circuit breaker 5 and the isolating switches on both sides can be realized, and the structure is simple.

Description of drawings

Accompanying drawing 1 is the top view of the utility model circuit breaker;

Accompanying drawing 2 is the schematic structural diagram of the circuit breaker when the isolating switch commonly used in the utility model is in the opening state;

Accompanying drawing 3 is the schematic structural diagram of the circuit breaker when the isolating switch commonly used in the utility model is in the closing state;

Accompanying drawing 4 is the structure diagram of the connection assembly of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

In the figure: 1, operating handle 2, spare isolating switch 3, pin 4, slave isolating shaft 5, circuit breaker 6, connecting rod 7, connection assembly 8, common isolating switch 9, main isolating shaft 10, upper terminal board 11, isolating Chain shaft 12, chain rod 13, lower terminal block 14, limiter 701, shaft hole 702, axle sleeve 703, crank arm 704, pin hole.

As shown in Figure 1-4, a circuit breaker with external double isolating switches of the present invention includes: operating handle 1, spare isolating switch 2, pin 3, slave isolating shaft 4, circuit breaker 5, connecting rod 6, Connection assembly 7, common isolating switch 8, main isolating shaft 9, upper wiring board 10, isolating interlocking shaft 11, interlocking lever 12, lower wiring board 13, limit device 14, characterized in that: upper wiring is installed above circuit breaker 5 Board 10, the two sides of the circuit breaker 5 are equipped with a common isolating switch 8 and a spare isolating switch 2, the common isolating switch 8 and the spare isolating switch 2 are respectively provided with a main isolating shaft 9 and a slave isolating shaft 4, and the common isolating switch 8 and the spare isolating switch The lower wiring board 13 is installed on the switch 2, and the connecting assembly 7 and the operating handle 1 are installed on the main isolation shaft 9 and from the isolation shaft 4. The connecting rod 6 is fixed on the connecting assembly 7 by the pin 3, and the locking rod 12 One end is fixed on the isolation chain shaft 11 on the circuit breaker 5, and the other end passes through the common isolation switch 8 and is tangent to the limit device 14 on the main isolation shaft 9.

The connecting assembly 7 is composed of a shaft sleeve 702 and a crank arm 703 .

The shaft sleeve 702 is provided with a shaft hole 701 inside, and the crank arm 703 is provided with a pin hole 704 .

The beneficial result of the utility model is that a chain bar 12 is arranged between the common isolating switch 8 and the spare isolating switch 2, and the common incoming line is connected with the lower wiring board 13 of the common isolating switch 8, and the spare incoming line is connected with the spare isolating switch The lower terminal block 13 of 2 is connected, and the outgoing line is connected with the upper terminal block 10 of the circuit breaker 5. When the common incoming line needs power outage maintenance, only need to manually operate the operating handle 1 to open the common isolating switch 8, and the chain lever 12 Drive the spare isolating switch 2 to close, and then start to overhaul the common incoming line. After the common incoming line is overhauled, you only need to manually operate the operating handle 1 to close the common isolating switch 8, and the chain lever 12 drives the spare isolating switch for 2 minutes. When the power supply of the common incoming line is restored, the line switching can be completed by operating only one side of isolation, which is simple and convenient to operate; only an isolation interlock shaft 11 needs to be provided between the common isolating switch 8 or the spare isolating switch 2 and the circuit breaker 5, that is, The interlock function between the circuit breaker 5 and the isolating switches on both sides can be realized, and the structure is simple.

Specific implementations have been given above, but the utility model is not limited to the above-described implementations. The basic idea of the present utility model lies in the above-mentioned basic scheme. For those of ordinary skill in the art, according to the teaching of the present utility model, it does not need to spend creative labor to design various deformation models, formulas and parameters. Changes, modifications, replacements and deformations to the embodiments without departing from the principle and spirit of the present utility model still fall within the protection scope of the present utility model.

Claims (3)

1. A circuit breaker with external double isolating switches, which is characterized in that: an upper terminal block (10) is installed above the circuit breaker (5), and a common isolating switch (8) and a spare isolating switch are installed on both sides of the circuit breaker (5). The switch (2), the common isolating switch (8) and the spare isolating switch (2) are respectively provided with the main isolating shaft (9) and the slave isolating shaft (4), and the common isolating switch (8) and the spare isolating switch (2) are The lower wiring board (13) is installed, the connecting assembly (7) and the operating handle (1) are installed on the main isolation shaft (9) and the slave isolation shaft (4), and the connecting rod (6) is connected by the pin (3). Fix it on the connection assembly (7), fix one end of the chain rod (12) on the isolation chain shaft (11) on the circuit breaker (5), and pass the other end through the common isolation switch (8) and the main isolation shaft (9) The limit device (14) is tangent. 2. A circuit breaker with external double isolating switches according to claim 1, characterized in that: the connection assembly (7) consists of a shaft sleeve (702) and a crank arm (703). 3. A circuit breaker with external double isolating switches according to claim 2, characterized in that: the shaft sleeve (702) is provided with a shaft hole (701), and the crank arm (703) is provided with a pin hole (704).