JPH071661B2 - Operating mechanism for shiya breaker - Google Patents

Description

TECHNICAL FIELD The present invention relates to an operation mechanism for a switch or a breaker used in a switchgear for electric power.

[Prior Art] FIG. 5 shows a conventional operation mechanism for a breaker and a breaker. FIG. 5 shows the reset state of the breaker and breaker, in which the fixed contact 17b and the movable contact 17a of the switch tube 17 are separated from each other and are in the open state.

In the figure, the charge lever 2 is connected to the frame 10 by the shaft 3.
It is rotatably supported at 0. A pin 35 is fixed to the shaft 3. Further, the charge lever 2 is provided with a roller 4 rotatably supported by a pin 5. The output lever 14 is rotatably supported by a shaft 15. One end of the output lever has pins 16,46,44 and links 48,49,45,47
Movable contact of switch tube 17 via a drive mechanism consisting of
It is connected to 17a. The rotary contact of the output lever 14 opens and closes the movable contact 17a and the fixed contact 17b. latch
The shaft 12 is rotatably supported by a shaft 20, and one end 12a thereof is locked by an intermediate latch 21. Between the latch 12 and the output lever 14, there are provided links 9 and 10 which are rotatably pin-coupled with pins 11, 8 and 13. Further, the energy storage link 6 is rotatably connected to the pin 8 by a pin 8 so as to be rotatable. The energy storage link 6 is a guide groove that is slidably fitted to the shaft 7.
6a and a back portion 6b pressed by a roller 4 provided on the charge lever 2. The tension force is applied to the pin 8 in one direction by a tension spring 19.

[Problems to be Solved by the Invention] Since the conventional operation mechanism of the breaker or the breaker is configured as described above, the charge lever 2 is set as shown by the two-dot chain line in FIG. 5 and the breaker is reset. It can be rotated even in the closed state. When the charge lever 2 is further rotated from this state, the energy storage link 6 rotates counterclockwise around the shaft 7, for example, and the operation mechanism makes unnecessary movement. In the worst case, there is a problem that the operating mechanism is damaged, or a breaker or a breaker is inserted. Further, since the charge lever 2 can be rotated at any time, there is a problem that it is unclear whether or not the comb or the breaker is in the closed state or in the reset state.

The present invention has been made to solve the above problems, and can clearly determine the state of a broth or a breaker without causing unnecessary movement of the operation mechanism of the broth or a breaker. The purpose is to submit the operation mechanism of the disconnector.

[Means for Solving the Problems] An operating mechanism for a shroud / disconnector according to the present invention is rotatably supported by a first shaft and has an end connected to a movable contact drive mechanism. A first link rotatably supported at a point on the lever, a second link pin-connected to the first link, and a second shaft rotatably supported on a second shaft. At one point, one end of the second link is rotatably supported, and a rotational force is applied around the second axis in one direction and a rotational movement is locked at one end; 3 has a guide groove slidably fitted to the shaft, and is rotatably pin-coupled to the pin coupling portions of the first and second links, and the pin engagement of the first and second links. A spring, one end of which is connected to the joint portion, which applies a biasing force in one direction to the pin joint portion; Is rotatably supported by the charge lever for pressing the accumulator link in one direction while the third shaft and the guide groove slide against the biasing force of the spring. It is rotatably supported and is biased by a rotational force in one direction. When the latch is unlocked, it abuts the energy storage link, and the operation of the energy storage link reverses the biasing force. A stopper that rotates in the other direction and is rotated in the other direction by the rotational force in the other state, contacts the charge lever, and prevents rotation of the charge lever.

[Operation] The latch is unlocked. That is, when the breaker or breaker is broken or broken, the pin connecting the first link and the second link with each other is moved in one direction by the biasing force of the spring. With the movement of this pin, the output lever rotates in the direction of separating the movable contact and the fixed contact. Further, the energy storage link swings while its guide groove slides on the third shaft,
Abut the stopper. The stopper rotates around the fifth axis by further swinging of the energy storage link, and separates from the charge lever. As a result, the charge lever can rotate.

On the other hand, when the latch is not unlocked, that is, when the lever or the breaker is in the reset state or the closed state, the position of the pin connecting the first link and the second link or the movement amount of the pin is The swing range of the energy storage link is also limited. Therefore, the energy storage link and the stopper do not come into contact with each other, and the stopper rotates due to its urging force and comes into contact with the charge lever to prevent rotation of the charge lever.

[Embodiment] An operation mechanism of a shroud / disruptor according to the present invention will be described with reference to FIGS. 1, 2, 3, and 4 showing an embodiment thereof.

FIG. 4 is a perspective view showing a general external appearance of a broth / breaker equipped with an operation mechanism for the broth / breaker according to the present invention. Three pairs of terminals 42 and 43 are provided to correspond to the three-phase power bus, and a switch tube is provided between the opposite terminals 42 and 43.
17 and drive mechanisms 44, 45, 47 and the like are provided. A shaft 3 penetrates through the front surface of the housing 1 of the operation mechanism portion of the shisha breaker, and a pin 35 is planted in the shaft 3. The shaft 3 can be rotated by engaging a pin 35 with a handle (not shown).

1, 2 and 3 are cross-sectional views showing the construction of the operating mechanism of the ladder and the circuit breaker, in which FIG. 1 is the reset state of the ladder and the circuit breaker, and FIG. The state and FIG. 3 show the broken state and the broken state of the breaker, respectively.

In each drawing, the output lever 14 is rotatably supported around a shaft 15 provided on the frame 100. One end of the output lever is provided with a movable contactor 17a of the switch tube 17 via a drive mechanism composed of pins 16, 46, 44 and 48, 49, 45, 47, etc.
Are linked to. Movable contact inside switch tube 17
A fixed contact 17b is provided so as to face the 17a.
The movable contact 17a and the fixed contact 17b are connected to the terminals 42 and 43, respectively.

The latch 12 is rotatably supported by a shaft 20 on the frame 100. Between the output lever 14 and the latch 12, there are first and second links 1 pin-coupled by a pin 8.
0 and 9 are provided. The first link 10 is rotatably connected to the output lever 14 by a pin 13, and the second link 9 is rotatably connected to a latch 12 by a pin 11. The energy storage link 6 is pin-connected to the pin 8 and one end of a spring 19 is engaged with the pin 8. The energy storage link 6 has a guide groove 6a that is slidably fitted to the shaft 7 and a back portion 6b that receives a charging force for resetting the operation mechanism of the shutter and the breaker. Axis 7
The charge lever 2 is rotatably supported by a shaft 3 penetrating the frame 100 at a position separated by a predetermined distance from. The charge lever 2 is provided with a roller 4 rotatably supported by a pin 5. The rotation of the charge lever 2 causes the roller 4 to move to the back 6b of the energy storage link 6.
And pushes the energy storage link 6 in a predetermined direction to reset the operating mechanism of the breaker or the breaker. Stopper 60
Is rotatably supported by a shaft 61, and is urged by a spring 63 to rotate in a counterclockwise direction. The rotation angle is restricted by the pin 21. Tip 60a of stopper 60
When in contact with the pin 62 as shown in FIGS. 1 and 2, the roller contacts the roller 4 and prevents the charge lever from rotating in the clockwise direction.

The closing trigger 29 is rotatably supported by the shaft 20 coaxially with the latch 12. The closing trigger 29 has a notch 29a for engaging the pin 13 provided on the output lever 14 and locking the operation of the output lever 14. The closing lever 27 is rotatably supported by a shaft 30. The closing lever 27 and the closing trigger 29 are connected by a link 25 pin-connected by pins 26 and 28, respectively. The intermediate latch 21 is rotatably supported by a shaft 22, and the notch portion 21a thereof causes the tip 1 of the latch 12 to move.
Lock 2a. The trigger 37 is rotatably supported by the shaft 23 and locks the rotation of the intermediate latch 21 by coming into contact with the end 21b of the intermediate latch 21. The closing lever 27, the trigger 37, the intermediate latch 21, the charge lever 2 and the like are biased in predetermined directions by springs or the like so as to be reset to predetermined positions (not shown in the figure). The frame 100 has an electromagnet for rotating the closing lever 27 and the trigger 37.
31 and 33 are provided.

Next, the operation of the embodiment will be described.

In the reset state shown in FIG. 1, it is assumed that the electromagnet 31 is energized and the plunger 32 extends rightward in the figure. The state at this time is shown in FIG. The closing lever 27 is rotated about the axis 30 in the counterclockwise direction. The turning force of the closing lever 27 is triggered by the pin 26 and the link 25 and the pin 28.
Transmitted to 29, closing trigger 29 rotates about axis 20 in a clockwise direction. As a result, the engagement between the notch 29a of the closing trigger 29 and the pin 13 is released. As a result, the pin 8 is moved to the right in the figure by the urging force of the spring 19, the first and second links 10 and 9 are extended as shown in FIG.
14 rotates clockwise about an axis 15. Output lever
The rotational force of 14 is transmitted to the movable contactor 17a via the drive mechanisms 48, 49, 44, 47, etc., the movable contactor 17a is joined to the fixed contactor 17b, and the broken wire is broken. At this time, the energy storage link 6 and the stopper 60 are not in contact with each other, and the stopper 60 contacts the roller 4 to prevent the charge lever 2 from rotating in the clockwise direction.

Next, it is assumed that a fault current due to a ground fault or the like occurs in the state shown in FIG. Upon detection of the fault current, the electromagnet 33 is excited, the plunger 34 is extended, and the trigger 37 is rotated around the shaft 23 in the counterclockwise direction. The state at this time is shown in FIG. The rotation of the trigger 37 in the counterclockwise direction releases the locking of the intermediate latch 21,
Rotates counterclockwise about axis 22. Intermediate latch 21
When is rotated, the latch 12 is unlocked. When the latch 12 is released, the pin 8 is pulled upward in the drawing toward the shaft 18 by the urging force of the spring 19a. As a result, the output lever 14 connected to the pin 8 via the first link 10 rotates about the shaft 15 in the counterclockwise direction. The counterclockwise rotational force of the output lever 14 is transmitted to the movable contact 17a via the drive mechanisms 48, 49, 45, 47 and the like, and separates from the fixed contact 17b. This breaks or breaks the breaker.

In FIG. 3, the energy storage link 6 moves to the right in the figure while the guide groove 6a and the shaft 7 slide as the pin 8 moves, and rotates around the shaft 7 in the clockwise direction. The back portion 6a of the energy storage link 6 contacts the stopper 60, and further rotates the stopper 60 in the clockwise direction around the shaft 61 against the biasing force of the spring 63. As a result, stopper 60 is roller 4
Away from the charge lever 2, the charge lever 2 can freely rotate around the shaft 3.

In order to return from the broken or broken state shown in FIG. 3 to the reset state shown in FIG. 1, the charge lever 2 is further rotated clockwise from the position shown in FIG.
As a result, the energy storage link 6 moves to the left in the drawing against the biasing force of the spring 19 and moves the pin 8 to the left in the drawing. The movement of the pin 8 causes the latch 12 to rotate counterclockwise, and the tip 12a of the latch 12 pushes down the end 21b of the intermediate latch. This causes the intermediate latch 21 to rotate clockwise against the urging force of its urging means (not shown), and the trigger 37 also rotates clockwise by its urging force (not shown) until it abuts the pin 24. .

[Effects of the Invention] As described above, according to the present invention, the charge lever 2 is prevented from rotating by the stopper 60 in the closed state or the reset state in which the latch 12 is locked. By the non-rotation of the, it is possible to know the current state of the break and the breaker. Further, it is possible to prevent malfunctions and the like due to unnecessary operations of the operating mechanism in the reset state.

[Brief description of drawings]

1, 2, and 3 are cross-sectional views showing the construction and operation of an embodiment of an operating mechanism for a shroud / disconnector according to the present invention,
FIG. 4 is a perspective view showing the external appearance of a broth / disruptor having an operation mechanism of the broth / disruptor according to the present invention, and FIG. 5 is a cross-sectional view showing the configuration of the conventional operation mechanism of the broth / disruptor. In the figure, 2 is a charge lever, 6 is a charging link, 9 is a second link, 10 is a first link, 12 is a latch, 14 is an output lever, 17a is a movable contactor, 17b is a fixed contactor, 19 is Spring, 60
Is a stopper.

Claims (1)

[Claims] 1. An output lever rotatably supported on a first shaft, one end of which is connected to a movable contact drive mechanism, and a first shaft rotatably supported at a point on the output lever. A link, a second link that is pin-coupled to the first link, and a second shaft that is rotatably supported by a second shaft. At one point on the second shaft, one end of the second link is rotatably supported, and A latch having a rotational force applied in one direction around the second shaft and having a rotational movement locked at one end, and a guide groove slidably fitted with the third shaft, An energy storage link that is rotatably pin-coupled to the pin coupling portions of the first and second links, one end of which is connected to the pin engagement portions of the first and second links, and one direction to the pin coupling portions. A spring that applies a biasing force to the spring, is rotatably supported by a fourth shaft, and connects the energy storage link to the spring. A charge lever that pushes in one direction while the third shaft and the guide groove slide against the force, and is rotatably supported by a fifth shaft and urged by a rotational force in one direction. , The latch is in contact with the energy storage link in the unlocked state, is rotated in the other direction against the biasing force by the operation of the energy storage link, and is rotated in the other state in the other state. An operating mechanism for a shingle or a breaker, comprising: a stopper that is rotated in the one direction by the contact with the charge lever to prevent rotation of the charge lever.