KR20110032923A - Gas insulated 3 position switch mechanism - Google Patents

Abstract

PURPOSE: A contact point place decision switch of the gas insulation switch is provided to enhance the reliability toward the performance of the gas insulation switch by preventing from revolving with the inertial force of the motor by the addition of the insulating spindle. CONSTITUTION: The driving gear(200) is connected to the motor(120) rotated the gad reverse. A plurality of pins is had. According to the cam member is the rotating operation of the driving gear, pins have the respective insertion and deviated a plurality of positioning grooves. If in the switching unit, the pin is inserted among a plurality of positioning grooves into a one, it recognizes to be inserted and the drive of the motor is stopped.

Description

Contact position switch of gas insulated circuit breaker {GAS INSULATED 3 POSITION SWITCH MECHANISM}

The present invention relates to a gas insulated circuit breaker, and in particular, by interrupting the power supplied to the motor by a switching signal, the operating stage installed on the insulated spindle by stopping the driving of the motor can be accurately positioned at the ground end, the closing end and the open end. A contact positioning switch of a gas insulated circuit breaker is provided.

In general, a gas insulated circuit breaker refers to a device that cuts off a current in case of an accident such as opening / closing a load, grounding, or short circuit in a transmission / transmission system or an electric circuit.

In particular, the gas circuit breaker is composed of a breaker insulated with an insulator in a tank-type metal container filled with a SF6 insulating gas, which is a tasteless, odorless and nontoxic inert insulating gas having excellent insulating properties.

Such a gas insulated circuit breaker can normally open and close the converter in the use state or can be opened and closed at a long distance by an electric operation device outside the metal container, and protects the current system and the load device by automatically cutting off the current in the event of overload and short circuit. .

The operation of the gas insulated circuit breaker includes an insulating spindle rotatably connected by a motor and an operating end screwed to each of the insulating spindles to move to ground, closed and open ends, respectively, to supply, cut off, and ground power. It is. Thus, the device for three-position operation is a three-position switch.

However, the three-position switch of the conventional gas insulated circuit breaker has no control structure that can prevent the insulated spindle from further rotating by the inertia force caused by the rotation of the motor. That is, the operation stage can not be stopped in the correct position by the additional rotation of the insulating spindle has a problem that the reliability of the performance of the gas insulation circuit breaker is deteriorated.

Accordingly, the present invention is to solve the above-mentioned conventional problems, by using a switching signal to immediately cut off the power supplied to the motor when the operating position is reached, the inertia of the motor by the inertia of the motor It is an object of the present invention to provide a contact positioning switch of a gas insulated circuit breaker which prevents further rotation so that the operating end installed on the insulated spindle can be accurately positioned at the ground end, the closing end and the open end.

The contact positioning switch of the gas insulated circuit breaker of the present invention for achieving the above object is connected to a motor rotated in the forward and reverse directions, a drive gear having a plurality of pins, and connected to the drive gear, the drive A cam member having a plurality of positioning grooves into which the pins are inserted and detached according to a rotational motion of the gear, and when the pin is inserted into any one of the plurality of positioning grooves, recognizes that the pin is inserted to drive the motor. And a switching member for stopping.

Here, the three insulating spindles rotatably connected by the motor, and the screw may be fastened to each of the insulating spindles and may include an operating end to supply, cut off and ground the power by moving to the ground, closed and open ends. have.

The drive gear has a first pin formed at one side thereof, and a second pin and a third pin formed protruded at the other side thereof, and the cam member is rotated three steps by the drive gear. Preferably, a first groove in which one pin is inserted and removed, and a second groove and a third groove in which the second pin and the third pin are inserted and removed are formed around the first groove.

The drive gear may include a first gear installed on a drive shaft of the motor, a second gear that rotates in engagement with the first gear, and a second gear that rotates in engagement with the second gear, wherein a first pin is formed on one side and the other on the other side. The second pin and the third pin may include a third gear protruding.

The cam member is rotated at one end to three setting positions when one of the pins is selectively inserted into the grooves, and the switching member is installed at each of the three setting positions at which one end of the cam is located. Can be switched.

The cam member is rotatably mounted to the cam plate, the cam plate having the first groove, the second groove and the third groove respectively formed at one end thereof, and fixed to one surface of the cam plate, and one end thereof is rotated by the switching member. It is preferable to include a camshaft in contact.

The cam shaft may have a seating groove having a curved surface at one end thereof, and the switching member may be provided with a switch which is settled by an elastic force so as to be pressed by the seating groove.

The drive shaft of the motor is further provided with a clutch to stop the transmission of the driving force, the switching member, it is possible to cut off the power of the motor and the clutch at the same time.

On the other hand, the drive gear is rotated by a separate manual operation in an emergency, the manual handle is penetrated to the other side of the main body is installed with the fixed member fixed to one surface of the main body, the drive gear through the fixing member. And a manual handle having a fourth gear installed at one end of the penetrating end, and installed inside the fixing member to position the fourth gear inside the fixing member, and the fourth gear is compressed when the manual handle is pressed. It is preferable to include an elastic member to be connected to the drive gear.

As described above, the present invention prevents the additional rotation of the insulating spindle by the inertial force of the motor, so that the operating end installed on the insulating spindle can be accurately positioned at the ground end, the closing end, and the open end, thus improving the performance of the gas insulation breaker. There is an advantage to increase the reliability. In addition, in an emergency in which power is not supplied or an abnormality in the motor occurs, there is an advantage in that it can be manually operated by using a push type manual controller.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In describing the present invention, the defined terms are defined in consideration of the function of the present invention, and should not be understood in a limiting sense of the technical elements of the present invention.

1 is a perspective view of a contact positioning switch of a gas insulated circuit breaker according to the present invention, FIG. 2 is an enlarged view of a main part for showing a drive gear and a cam member and a switching member of a contact positioning switch of a gas insulated circuit breaker according to the present invention; Figure 3a is a first operating state diagram of the contact positioning switch of the gas insulated circuit breaker according to the present invention, Figure 3b is a second operating state diagram of the contact position switch of the gas insulated circuit breaker according to the present invention, Figure 4a is Figure 1b is a first operating state diagram for showing the manual operation of the contact positioning switch of the gas insulated breaker according to the present invention, Figure 4b is a second operation for showing the manual operation of the contact positioning switch of the gas insulated breaker according to the present invention This is a working state diagram.

As shown, the contact positioning switch 100 of the gas insulated circuit breaker according to the present invention is connected to the motor 120 rotated in the forward and reverse directions, the drive gear 200 having a plurality of pins, and A cam member 300 connected to the drive gear 200 and having a plurality of positioning grooves into which the pins are inserted and removed, respectively, according to a rotation operation of the drive gear 200, and any of the plurality of positioning grooves. When the pin is inserted into one, it is recognized that the insertion includes a switching member 400 for stopping the driving of the motor.

In addition, the three insulating spindles 130 rotatably connected by the motor 120, and the screw is fastened to each of the insulating spindles 130 and moved to the ground, closed and open end to supply power, cut off and ground Operation stage 140 may be included to enable.

And the drive gear 200 may be rotated by a separate manual operator 500 in the emergency. In addition, the driving shaft 121 of the motor 120 may further include a clutch 150 that stops the transmission of the driving force, and the switching member 400 may simultaneously cut off the power of the motor 120 and the clutch.

The drive gear 200 includes a first gear 210 installed on the drive shaft 121 of the motor 120, a second gear 220 meshed with the first gear 210, and the second gear 220. The third gear 230 is rotated in engagement with the 220, and the first pin 231a is formed at one side and the second pin 231b and the third pin 231c are formed at the other side.

The second gear 220 is rotatably installed in the main body 110, the third gear in a gear having a small diameter separately installed on the rotation axis of the second gear 220 for the deceleration of the third gear 230. Gear 230 may be engaged and rotated.

The cam member 300 has a first groove 311a in which the first pin 231a of the third gear 230 is inserted and removed so that one side of the cam member 300 is rotated by the third gear 230. It is preferable that the second groove 211b and the third groove 211c, respectively, in which the second pin 231b and the third pin 231c are inserted and removed, are formed around the first groove 311a.

The cam member 300 is rotated at one end to three setting positions when any one of the pins is selectively inserted into the grooves, and the switching member 400 to be described later may include the cam member 300. One end may be installed and switched at each of the three set positions.

In more detail, the switching member 400 is divided into a ground, a closed and an open side switching member 400, respectively, the one end of the cam member 300 in contact with the switch of each switching member 400 Accordingly, the power supplied to the motor 120 can be cut off accurately.

Here, the cam member 300 is rotatably installed, the cam plate 310, the cam plate 310, the cam groove 310, the first groove 311a, the second groove 211b and the third groove 211c are formed in one end, respectively, It is preferable to include a cam shaft 320 fixed to one surface of the 310 and one end of the contact with the switching member 400 by the rotation.

In addition, the cam shaft 320 may have a seating groove 321 having a curved surface at one end thereof, and the switching member 400 may be provided with a switch 410 that is settled by an elastic force so as to be pressed by the seating groove 321. have.

The manual manipulator 500 includes a fixing member 510 fixed to one surface of the main body 110 and a main body 110 in which the third gear 230 of the drive gear 200 is installed through the fixing member 510. Passed to the other side, the manual handle 520, the fourth gear 521 is installed at one end of the penetrated, and is installed inside the fixing member 510, the fourth gear 521 to the fixing member 510 ) And an elastic member 530 which is compressed when the manual handle 520 is pressed to allow the fourth gear 521 to be connected to the third gear 230.

The manual handle 520 is formed to extend to the other side of the main body 110 to a predetermined length, the extended end may be a handle portion to be rotated by the user gripping by hand. In addition, a locking end (not shown) may be formed so that one end of the elastic member 530 is locked.

The elastic member 530 elastically supports the manual handle 520 toward the fixing member 510 so that the fourth gear 521 of the manual handle 520 is separated from the third gear 230. do. Here, one end of the elastic member 530 may be elastically supported by being latched at the locking end of the manual handle 520, and a coil spring may be used as the elastic member 530.

Hereinafter, the operation of the contact positioning switch of the gas insulated circuit breaker according to the present invention will be described with reference to FIGS. 2 to 4b.

First, when power is supplied to the motor 120, the first, second, and third gears 210, 220, and 230 connected to the drive shaft 121 of the motor 120 rotate together with the drive shaft 121, and to the drive shaft 121. The insulating spindle 130 connected by a chain or the like rotates together.

And the operating end 140 is fastened to each of the insulating spindle 130 is moved to any one of the ground end, the closing end and the open end.

Here, the first pin 231a of the third gear 230 is pushed in the forward or reverse direction to push the first groove 311a corresponding to the neutral position and is rotated while rotating the cam member 300 at a set angle. The second pin 231b or the third pin 231c formed on the other side of the pin 231a is inserted into the second groove 211b or the third groove 211c of the cam member 300 to be locked.

At this time, one end of the cam member 300 is connected to the other switching member 400 located in the forward or reverse direction while the connection is released from the switching member 400 which is in contact with the neutral position.

Here, the switching member 400 may immediately cut off the power supplied to the motor 120 by applying a switching signal to the control unit. Thus, the operating ends 140 provided on each of the insulating spindles 130 can be stopped exactly at their respective connecting positions.

In an emergency, after pressing and pressing the manual handle 520 of the manual operator 500 with a predetermined force, the manual gear 520 is placed in a state where the fourth gear 521 is engaged with the third gear 230. Can be operated by rotating.

As a result, the inertia force of the motor 120 prevents the further rotation of the insulation spindle 130 so that the operating end 140 installed on the insulation spindle 130 can be accurately positioned at the ground end, the closing end, and the open end. There is an advantage that can increase the reliability of the gas insulation circuit breaker. In addition, in case of an emergency in which power is not supplied or an abnormality of the motor 120 occurs, it is possible to operate using the push type manual operator 500, which is convenient.

The technical idea of the contact position switch 100 of the gas insulated circuit breaker according to the present invention has been described above with the accompanying drawings, but this is by way of example and not by way of limitation. .

Accordingly, it is a matter of course that various modifications and variations of the present invention are possible without departing from the scope of the present invention. And are included in the technical scope of the present invention.

1 is a perspective view of a contact position switch of a gas insulated circuit breaker according to the present invention;

2 is an enlarged view illustrating main parts of a drive gear and a cam member and a switching member of a contact positioning switch of a gas insulated circuit breaker according to the present invention;

Figure 3a is a first operating state diagram for showing the operation of the contact positioning switch of the gas insulated circuit breaker according to the present invention.

Figure 3b is a second operating state diagram for showing the operation of the contact positioning switch of the gas insulated circuit breaker according to the present invention.

Figure 4a is a first operating state diagram for showing the manual operation of the contact positioning switch of the gas insulated circuit breaker according to the present invention.

Figure 4b is a second operating state diagram for showing the operation of the manual operation of the contact positioning switch of the gas insulated circuit breaker according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100: switch 110: main body

120: motor 121; driving axle

130: insulated spindle 140: operating stage

150: clutch 200: drive gear

210: first gear 220: second gear

230: third gear 231a: first pin

231b: second pin 231c: third pin

300: cam member 310: cam plate

311a: first groove 311b: second groove

311c: third groove 320: camshaft

321: seating groove 400: switching member

500: manual operation unit 510: holding member

520: handwheel 521: fourth gear

530: elastic member

Claims (9)

A drive gear connected to the motor rotated in the forward and reverse directions and having a plurality of pins; A cam member connected to the drive gear, the cam member having a plurality of positioning grooves into which the pins are inserted and removed, respectively, according to a rotational operation of the drive gear; And And a switching member which stops driving of the motor by recognizing the insertion when a pin is inserted into any one of the plurality of positioning grooves. The method of claim 1, And three insulating spindles rotatably connected by the motor, and an actuating end screwed to each of the insulating spindles to move to ground, closed and open ends to supply, cut off, and ground power. Contact positioning switch of gas insulated circuit breaker. The method of claim 2, The drive gear, the first pin is formed on one side and the second pin and the third pin is formed on the other side, respectively, The cam member includes a first groove in which the first pin of the drive gear is inserted and removed so that the cam member is rotated three steps by the driving gear, and the second pin and the third pin are inserted around the first groove. Contact positioning switch of the gas insulated circuit breaker, characterized in that the second groove and the third groove is removed. The method of claim 3, The drive gear may include a first gear installed at a drive shaft of the motor; A second gear meshing with the first gear to rotate; And And a third gear rotated in engagement with the second gear and having a first pin formed on one side and protruding from the second pin and a third pin on the other side, respectively. . The method of claim 3, The cam member has one end rotated to three set positions when any one of the pins is selectively inserted into the grooves, And the switching member is installed and switched at each of the three set positions at which one end of the cam is located. The method of claim 5, The cam member, the cam plate is rotatably installed, the cam plate is formed in the first groove, the second groove and the third groove, respectively; And And a cam shaft fixed to one surface of the cam plate, the cam shaft having one end contacting the switching member by rotation. The method of claim 6, The cam shaft is formed with a mounting groove forming a curved surface at one end, The switching member, the contact positioning switch of the gas insulated circuit breaker, characterized in that provided with a switch indented by the elastic force so as to be pressed in the seating groove. The method of claim 2, In the drive shaft of the motor, a clutch to stop the transmission of the driving force is further installed, And said switching member cuts off power of said motor and said clutch at the same time. The method according to claim 3 or 4, The drive gear is rotated by a separate manual operator in an emergency, The manual control unit, a fixing member fixed to one surface of the main body; A manual handle penetrating to the other side of the main body in which the driving gear is installed through the fixing member, and a fourth gear installed at the penetrating end; And And an elastic member installed inside the fixing member to position the fourth gear inside the fixing member and compressed when the manual handle is pressed to allow the fourth gear to be connected to the driving gear. Contact positioning switch of gas insulated circuit breaker.

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