KR101132290B1 - Apparatus for automatic drawing in/out circuit-breaker for distributing switchboard - Google Patents

Abstract

PURPOSE: An automatic inserting/extracting apparatus of a breaker for a distribution panel is provided to easily connect or separate a connection terminal of the breaker and a connection terminal of a closure by automatically inserting the breaker in the inner side of the closure with mechanical power. CONSTITUTION: A bogie(120) is installed at the lower side of inner front of a closure(110). A breaker(130) is loaded in the bogie and is moved with the bogie. A pair of second connect terminals(133) is installed in the rear side of the breaker. A power transmission is installed in the rear side of the bogie to be possible to be ascended and descended with a first pinion(151) combined in a rotary shaft(141). A first rack is connected or separated to the first pinion. The power transmission comprises a plurality of bevel gears according to the installation direction of a motor(140).

Description

Automatic draw / draw device of breaker for switchboard {APPARATUS FOR AUTOMATIC DRAWING IN / OUT CIRCUIT-BREAKER FOR DISTRIBUTING SWITCHBOARD}

The present invention relates to an automatic drawing in / out device of a switchgear breaker.

The switchboard is installed in a power plant, substation, or a building in which an electric facility is installed. The switchboard is a device for protecting a generator or a transformer when the current, voltage, or electric power is sent to or received from various places. The switchgear is equipped with breakers, instruments, indicators, relays, etc. for the opening and closing of converters and for the control and monitoring of equipment.

The breaker installed in the switchboard is mounted on the trolley to enter and exit the switchboard. Thus, when the breaker's connection terminal is connected to the switchboard's connection terminal, the current on the power supply side is transmitted to the destination through the breaker, and when the breaker's connection terminal is separated from the switchboard's connection terminal, the current on the power supply's side is not transmitted to the destination. can not do it.

A trolley installed in a conventional switchboard is operated by a worker pushing and pulling by human power, or by rotating a separate handle by human power.

However, when pushing or pulling the trolley by human force, it is a great force to connect the breaker connection terminal to the connection terminal of the switchboard or to disconnect the breaker connection terminal from the connection terminal of the switchboard. There is an inconvenient disadvantage.

In addition, when moving the trolley by rotating a separate handle, there is a disadvantage that takes a lot of work time.

The present invention has been made in order to solve the problems of the prior art as described above, the object of the present invention is the automatic drawing / withdrawal of the breaker for a convenient switchgear that can easily connect or disconnect the connection terminal of the breaker and the connection terminal of the switchboard In providing a device.

One is connected to the power source side and the other is a housing provided with a pair of first connection terminals connected to the use side, a trolley for entering and exiting the housing, mounted on the trolley and moving with the trolley. Interconnecting the first connection terminal while having a pair of second connection terminals drawn into or withdrawn from the enclosure and connected to the first connection terminal or separated from the first connection terminal; Or a switchboard having a circuit breaker for disconnecting each other,

The housing is provided with a driving unit, and the driving unit and the trolley are provided with a power transmission unit for transferring the driving force of the driving unit to the trolley to introduce the trolley into or out of the housing, and the trolley It is provided with a power switching unit for connecting or disconnecting the power transmission unit to the drive unit.

The automatic drawing-in / out of the circuit breaker for switchboard according to the present invention automatically connects the circuit breaker to the inside of the enclosure and draws it out of the enclosure by an electric mechanical force instead of the human force, so that the terminal of the circuit breaker is connected. The connection terminals of and the housing can be easily connected or disconnected.

1 is a perspective view of a switchboard according to an embodiment of the present invention.
Figure 2 is a perspective view of the bogie and the breaker shown in Figure 1;
3A to 3F are schematic side views of FIG. 1 for explaining that a breaker is pulled in or pulled out by a motor;

Hereinafter, with reference to the accompanying drawings will be described in detail the automatic in / out device of the switchgear breaker according to an embodiment of the present invention.

1 is a perspective view of a switchboard according to an embodiment of the present invention.

As shown, the switchboard according to the present embodiment has a housing (110). The enclosure 110 is provided with a circuit breaker, a meter, an indicator, a relay, and the like for opening and closing of a converter and controlling and monitoring a device.

Then, a lower portion of the inner rear side of the enclosure 110 is provided with a pair of first connection terminals 113, one of which 113a is connected to the power source side and the other 113b is connected to the use destination side. The first connection terminal 113a and the first connection terminal 113b are connected to each other when the circuit breaker 130 to be described below is introduced into the housing 110, and the circuit breaker 130 is connected to the housing 110. When pulled out, they are disconnected from each other. The first connection terminal 113a faces the front side of the enclosure 110.

A predetermined space is formed below the inner front side of the enclosure 110, and a bogie 120 is installed below the inner front side of the enclosure 110. The cart 120 moves in and out of the housing 110 while linearly reciprocating.

The trolley 120 is mounted with a circuit breaker 130 and moves with the trolley 120. That is, the breaker 130 is drawn in to the inside of the enclosure 110 by the cart 120, and is drawn out of the enclosure 110.

A pair of second connection terminals 133 are installed on the rear surface of the breaker 130 to face the first connection terminal 113. When the breaker 130 is drawn into the housing 110 by the trolley 120, the second connection terminal 133a is connected to the first connection terminal 113a, and the second connection terminal 133b is formed by the cart 120. It is connected to one connection terminal 113b. Then, the first connecting terminal 113a and the first connecting terminal 113b are connected to each other.

When the circuit breaker 130 is drawn out of the housing 110 by the cart 120, the second connection terminal 133a is separated from the first connection terminal 113a, and the second connection terminal 133b. Is separated from the first connection terminal 113b. Then, the first connection terminal 113a and the first connection terminal 113b are not connected to each other.

That is, the circuit breaker 130 is connected to or disconnected from the first connection terminal 113a and the first connection terminal 113b while being drawn into or drawn out of the enclosure 110.

The switchboard according to the present embodiment is provided with a device for automatically drawing or withdrawing the breaker 130 by the power of the machine by the electricity, this will be described with reference to FIGS. FIG. 2 is a perspective view of the bogie and the breaker shown in FIG. 1. FIG.

As shown, the drive unit 110 is installed in the housing 110, the power transmission unit is installed in the drive unit and the bogie 120, the power conversion unit is installed in the bogie 120.

The driving unit generates power for moving the trolley 120, the power transmission unit transfers the driving force of the driving unit to the trolley 120, and the power conversion unit connects or disconnects the power transmission unit to the driving unit.

The driving unit is provided with a motor 140 having a rotating shaft 141 installed on the lower inner rear side of the housing 110.

The power transmission unit is installed on the rear of the first pinion (151) and the bogie 120 coupled to the rotating shaft 141, the first rack (rack) connected to or separated from the first pinion (151) 155 is provided. When the first rack 155 is lowered to engage the first pinion 151, the first rack 155 linearly moves by the rotational force of the motor 140. As a result, the trolley 120 is drawn into the interior of the housing 110 and is drawn out of the housing 110.

By properly adjusting the length of the first rack 155, the movement distance of the cart 120 by the motor 140 can be adjusted.

The power transmission unit may include a plurality of bevel gears according to the installation direction of the motor 140.

When the power conversion unit is to move the cart 120 by the force of the motor 140, the first rack 155 is lowered to be engaged with the first pinion 151. When the breaker 130 is completely drawn in or drawn out, the power switching unit does not need to move the breaker 130, or when the breaker 130 is to be moved manually, the first rack 155 is raised. It is separated from the first pinion 151.

In detail, the power switching unit is coupled to one end of the support shaft 161 rotatably supported on the trolley 120, the support shaft 161, the rotating handle 164 for rotating the support shaft 161, support It is installed on the second pinion 165 coupled to the other end side of the shaft 161 and the cart 120 so as to be lifted and engaged with the second pinion 165, and the second pinion 165 is rotated. And a second rack 166 to elevate 155.

The support shaft 161 is provided in plural numbers depending on the position of the support shaft 161. For example, the support shaft 161 is rotatably supported on the first support shaft 161a and the rear surface of the bogie 120 that are rotatably supported on one side of the bogie 120 and the first support shaft 161a. And a second support shaft 161b having an angle of approximately 90 °.

At this time, the rotary handle 164 is coupled to the front end side of the first support shaft 161a exposed to the outside of the front of the cart 120. In order to transfer the rotational force of the first support shaft 161a to the second support shaft 161b, the first bevel gear 162a is coupled to the rear end side of the first support shaft 161a and the second support shaft 161b. The second bevel gear 162b engaging with the first bevel gear 162a is coupled to one end side of The second pinion 165 is coupled to the other end side of the second support shaft 161b.

Therefore, the rotational force acting on the rotation handle 164 is the second pinion 165 through the first support shaft 161a → the first bevel gear 162a → the second bevel gear 162b → the second support shaft 161b. ), And the second rack 166 is lifted by the rotation of the second pinion 165.

A stopper 163 is formed on the outer circumferential surface of the second support shaft 161b to limit the rotation angle of the rotation handle 164 by being caught by the trolley 120. Since the rotation angle of the rotation handle 164 is limited by the stopper 163, the lifting distance of the second rack 166 by the second pinion 165 is limited. If necessary, the subsidiary bracket 163a to which the stopper 163 is coupled may be coupled to the cart 120.

The first rack 155 and the second rack 166 are supported by the first bracket 167 installed in the cart 120 so as to be lifted and lowered together with the first bracket 167. The first rack 155 is coupled to the bottom surface of the first bracket 167 and positioned above the first pinion 151, and the second rack 166 is coupled to the side surface of the first bracket 167.

The trolley 120 is provided with a first limit switch 168 in which the contact is switched according to the lifting position of the first rack 155. In more detail, when the first rack 155 is lowered and engaged with the first pinion 151 by the rotation of the rotation handle 164, the first limit switch 168 is turned on. When the first rack 155 is lifted up and separated from the first pinion 151, the first limit switch 168 is turned off by the first bracket 167. The controller (not shown) installed in the enclosure 110 controls the motor 140 appropriately according to the on or off of the first limit switch 168.

A second bracket 171 is installed on the side of the cart 120, and a support rod 173 is rotatably installed on the second bracket 171. And, the operation handle 175 is coupled to the front end side of the support rod 173 protruding toward the front side of the cart 120, the engaging rod 177 is formed on the outer peripheral surface of the support rod 173. The operation handle 175, the support rod 173, and the locking rod 177 rotate together.

The third bracket 181 is installed on one side of the enclosure 110, and the first and second locking rods 177 are inserted and caught as the cart 120 enters and exits the enclosure 110. The second locking grooves 181a and 181b are formed with a mutual gap therebetween. In addition, a portion of the third bracket 181 in which the first and second locking grooves 181a and 181b are formed is provided by the locking rod 177 inserted into the first locking groove 181a or the second locking groove 181b. Second and third limit switches 183 and 185 to which the contact is switched are provided.

In addition, an elastic member 179 is installed on the second bracket 171 and the locking rod 177 to elastically support the locking rod 177 toward the first and second locking grooves 181a and 181b.

 When the locking rod 177 is inserted into and caught in the first and second locking grooves 181a and 181b, the cart 120 may not flow.

The operation of the automatic drawing / drawing device of the breaker for switchboard according to the present embodiment will be described with reference to FIGS. 1 to 3D. 3A to 3F are schematic side views of FIG. 1 for explaining that a circuit breaker is pulled in or pulled out by a motor.

As shown in FIG. 3A, the breaker 130 is completely inserted into the enclosure 110, so that the second connection terminal 133 of the breaker 130 and the first connection terminal 113 of the enclosure 110 are closed. Assume that the interconnected state is the "operation position".

In the "operation position", since the 1st connection terminal 113a and the 1st connection terminal 113b are mutually connected by the 2nd connection terminal 133, the electric current of a power supply side is transmitted to the usage destination side. Then, the first rack 155 is lifted up and separated from the first pinion 151, the locking rod 177 is inserted into the first locking groove 181a (see Fig. 1), the first and second The limit switches 168 and 183 are turned off by the first bracket 167 and the locking rod 177, respectively.

To block the first connection terminal 113a and the first connection terminal 113b for checking or repairing the switchboard or the breaker 130 at the “operation position”, as shown in FIG. 3B, the rotary handle 164 ) Rotate it counterclockwise. Then, the first rack 155 is engaged with the first pinion 151 while the first rack 155 is lowered by the lowering of the first bracket 167. At the same time, the first limit switch 168 is turned on.

Thereafter, the operation handle 175 is rotated counterclockwise, and the second limit switch 183 is turned on when the locking rod 177 is removed from the first hook groove 181a.

Then, the motor 140 rotates under the control of the controller, and as shown in FIG. 3C, the first rack 155 moves to the front side of the enclosure 110 by the rotation of the motor 140. When the first rack 155 moves to the front side of the enclosure 110, the breaker 130 is drawn out of the enclosure 110. When the breaker 130 is drawn out, the first connection terminal 113a and the first connection terminal 113b are separated from each other and blocked.

After the first connection terminal 113a and the first connection terminal 113b are blocked, the trolley 120 is completely removed to the outside of the housing 110, and then necessary work may be performed.

The operation of drawing the breaker 130 by inserting the cart 120 into the housing 110 will be described.

As shown in FIG. 3D, the first rack 155 is raised, and the rear side of the trolley 120 is inserted into the housing 110 to engage the rod 177 with the second hook groove 181b. (See Fig. 1). Then, the third limit switch 185 is turned off by the locking rod 177.

As shown in FIG. 3E, when the rotation handle 164 is rotated in the counterclockwise direction, the first rack 155 is lowered to engage the first pinion 151. At the same time, the first limit switch 168 is turned on.

Thereafter, the operation handle 175 is rotated counterclockwise, and the third limit switch 185 is turned on by removing the locking rod 177 from the second hook groove 181b.

Then, the motor 140 rotates under the control of the controller, and as shown in FIG. 3F, the first rack 155 moves to the rear side of the enclosure 110 by the rotation of the motor 140. When the first rack 155 moves to the rear side of the enclosure 110, the breaker 130 is introduced into the enclosure 110. When the circuit breaker 130 is drawn in, the first connection terminal 113a and the first connection terminal 113b are connected.

By the above operation, the breaker 130 is drawn out of the enclosure 110 and drawn into the enclosure 110.

The switchboard according to the present embodiment draws the breaker 130 into the interior of the enclosure 110 by mechanical force and draws it out of the enclosure 110, so that no manpower is required, which is very convenient.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Of course.

110: enclosure 120: bogie
130: breaker 140: motor

Claims (7)

One is connected to the power source side and the other is a housing provided with a pair of first connection terminals connected to the use side, a trolley for entering and exiting the housing, mounted on the trolley and moving with the trolley. Interconnecting the first connection terminal while having a pair of second connection terminals drawn into or withdrawn from the enclosure and connected to the first connection terminal or separated from the first connection terminal; Or a circuit breaker for disconnecting each other, a motor installed in the enclosure, a motor installed in the motor, and the trolley to transfer the driving force of the motor to the trolley to draw the trolley into the interior of the enclosure or withdraw the exterior of the enclosure. In the switchgear is provided in the transfer unit, the power switch is provided in the cart to connect or disconnect the power transmission unit to the motor,
The power transmission unit has a first pinion coupled to a rotation shaft of the motor and a first rack installed to be liftable on the bogie and connected to or separated from the first pinion.
The power switching unit is coupled to one end of the support shaft rotatably supported on the bogie, a rotation handle for rotating the support shaft, a second pinion coupled to the other end side of the support shaft, can be lifted on the bogie It is installed so as to engage with the second pinion and has a second rack to elevate the first rack while the second pinion is rotated,
The support shaft is formed with a stopper for limiting the rotation angle of the rotary handle to be caught on the bogie,
The support shaft has a first support shaft rotatably supported on the trolley and a second support shaft rotatably supported on the trolley at an angle with the first support shaft,
The rotating handle is coupled to one end side of the first support shaft, the first bevel gear is coupled to the other end side,
A second bevel gear engaged with the first bevel gear is coupled to one end side of the second support shaft, and the second pinion is coupled to the other end side.
The trolley is provided with a first bracket on which the first rack and the second rack are supported to be liftable,
And said stopper is formed on the outer circumferential surface of the second support shaft. The method of claim 1,
The trolley is an automatic draw-in / out device of a circuit breaker for a switchgear, characterized in that the first limit switch is installed, the contact is switched according to the lifting position of the first rack. The method of claim 2,
The bogie is provided with a second bracket,
A support rod (Rod) is rotatably installed on the second bracket,
An operation handle is formed at one end of the support rod and a locking rod is formed at an outer circumferential surface thereof.
The enclosure is provided with a third bracket,
The third bracket has first and second locking grooves having mutually spaced intervals for preventing the moving of the cart by inserting the locking rod is inserted,
The contact point is switched to the portion of the third bracket formed with the first and second locking grooves by the locking rod inserted into the first locking groove or the second locking groove as the cart enters and exits the enclosure. Second and third limit switches are installed,
The third bracket and the engaging rod is an automatic draw / withdrawal device of a switchgear breaker, characterized in that the elastic member for elastically supporting the locking rod to the first and second locking groove side. delete delete delete delete

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