JP3343609B2 - Automatic breaker recovery device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit breaker automatic recovery device. In particular, it is suitable for the following points. The present invention relates to an automatic breaker recovery device having a new mechanism. Specifically, it relates to the recovery of a breaker that has been activated due to an overcurrent or the like. The current is interrupted due to an abnormal current or the like by adding the breaker automatic recovery device of the present invention to a breaker that is provided as a general-purpose product. The circuit breaker recovery device is operated by remote control and automatic control based on a command signal transmitted from the control circuit to restore the circuit breaker to a normal state in which power can be supplied to the circuit breaker.

[0002]

2. Description of the Related Art Conventionally, overcurrent or leakage caused by a lightning strike caused by the passage of a thundercloud, and restoration work after a breaker caused by a short-circuit of an electric wire or the like to operate and cut off electricity is urgent day and night. The workers are required to take measures to procure restoration materials based on empirical failure predictions, and at the same time, go to towns and mountains, and in some cases, go to places with a three- to four-hour arrival time, The actual situation is that the status of the secondary-side electric wires and power distribution equipment has been confirmed, and restoration has been completed by simply turning on the breaker switch without using procured materials. As a result, it is inefficient for workers to go to the site every time, and there is a strong demand for efficient operation of the labor force, quick recovery and labor saving. In response to such a situation, the present applicant has previously filed Japanese Patent Application No. 11-5236.
No. 0 (breaker restoring device and control device of the breaker restoring device) is installed above the breaker (primary side electric power supply side), and the vertical command boom expands and contracts by the restoration command signal, and the breaker switch is activated, A mechanism (boom method) for restoring the vehicle was proposed.

[0003]

The above-mentioned prior art has the following problems. In the above-mentioned boom type, the safety arrangement is such that the vertical rod-shaped boom is installed on the primary wiring path, and the primary electric wire is placed directly under the telescopic operation area of the iron recovery operation arm. Had a problem. In addition, when applied to a large breaker, there is a problem that components such as a motor are enlarged in order to make the vertical bar-shaped boom robust, and the entire device becomes large. The present invention has been made in view of such problems of the conventional technology, and has as its object to provide the following. In response to the emergency response described in the prior art, the inefficient work of having workers go to the site every time has been abolished, and at the same time, the breaker operation due to simultaneous multiple occurrence of abnormal current due to thunderclouds and other labor has been abolished. The purpose was to recover the breaker in the shortest amount of time while efficiently managing the power and saving labor.

This device is constituted by the following device units. That is, the automatic breaker recovery device 1 is disposed at the side of the breaker 2, and the automatic breaker recovery device 1
After the switches 2A of the breaker 2 are operated in a non-contact state to stop the switches 2A of the breaker 2 in a non-contact state based on an external operation command signal, the switch holding plates 5B and 5C mounted on the Actuator 4B is operated, switch 2A is moved from current interrupt holding position 2Al (see FIG. 13) after breaker 2 is operated to holding mechanism releasing position 2A2 (see FIG. 14), and then stopped, and the action direction is reversed. The switch 2A is moved to a recovery position 2A3 (see FIG. 15), which is a re-input, and then stopped,
The action direction is reversed again, and the switch holding plates 5B, 5C return to the normal position 2A3 (see FIG. 16) at the center of the device, and then the switch is released by opening the switch holding plates 5B, 5C, and a series of operations is performed. This is an automatic breaker recovery device that completes the recovery operation.

[0005]

Means for Solving the Problems In order to achieve the above object, the present invention is as follows. That is,
In the first invention, the switch 2A of the breaker 2 is disposed on the side of the breaker, and the switch 2A of the left and right switch holding plates 5B, 5C is operated by the operation of the holding plate opening / closing motor 5A5 provided in the device case 3. At the time of being pinched by the turning operation, the pinch plate closing limit stop sensor 5E senses and stops the operation, and based on that, the actuator 4B provided inside the apparatus case section 3 starts operating, and the switch 2
A is moved from the current interruption holding position to the holding release position, and the operation of the reactor 4B is stopped by the detection of the current interruption holding release stop position sensor 5F2. Thereafter, the reversing operation is started, and the switch 2A is moved to the switch re-input position. It is moved and stopped by sensing the switch re-start stop position sensor 5F2. Further, the actuator 4B starts re-inverting operation, moves to the position where the normal-time fixed stop position sensor 5F1 senses, stops, and then clamps. Plate opening / closing motor 5
A5 starts the reversing operation, the switch holding plates 5B and 5C start turning to release the holding of the switch 2A, and stop when the holding plate opening limit stop sensor 5D detects the operation to complete a series of restoring operations. It is a breaker automatic recovery device configured to perform.

According to a second aspect of the invention, when the switch 2A is viewed from the front, when the current is cut off due to an abnormal current, the current cutoff holding position 2A1 is located at the center, the cutoff holding release position 2A2 for re-input is the left position, and the current Moves to the right position, which is the normal home position 2A3, when the power is supplied to the general-purpose breaker 2 configured to complete the recovery, and the following device is used to control the general-purpose breaker 2 Case 3
And a switch operation unit 4 accommodated in the device case 3
And a circuit breaker automatic recovery device comprising a switch holding section 5. A. The device case 3 is composed of a lower case unit 3A and an upper case unit 3B, a. The lower case unit 3A is composed of a horizontal rectangular bottom plate 3A1 on the left and right sides of the plane, and front and rear plates 3A standing and connected to the front and rear sides of the bottom plate.
2, 3A2 and the guide rail 3A3 attached to the upper surface of the bottom plate 3A1 and the guide rail 3 attached to the inner surface of the front and rear plates 3A2 for fitting and operating the operation unit case main body 4A1.
A4, b. The upper case unit 3B includes a horizontal rectangular top plate 3B1 on the left and right sides of the plane, and front and rear plates 3B standing upright on the front and rear sides of the top plate.
2, 3B2 and the guide rail 3B3 attached to the lower surface of the top plate 3B1 and the guide rail 3 attached to the inner surface of the front and rear plate 3A2 for fitting and operating the operation unit case body 4A1.
B4, and a horizontal operation opening 3B5 of a switch holding portion provided at a predetermined position of the top plate 3B1, c. The lower case unit 3A and the upper case unit 3B are connected to each other using the connecting plate 3C by abutting the front and rear plates of the lower case unit 3B, and the lower case unit 3A is connected thereto.
An actuator mounting plate 3D is mounted on the left end surface of the upper case unit 3B. The switch operation unit 4 includes an operation unit case 4A and an actuator 4B, a. The operation unit case 4A includes a case main body 4A1 and a holding plate mounting base 4A2. The case main body 4A1 includes a flat rectangular bottom plate 4A11 and front and rear plates 4A12 and 4A12 which are erected on the front and rear sides of the bottom plate.
And a top plate 4A13 stretched between the front and rear plates. The holding plate mounting base 4A2 is formed in a flat rectangular shape, and is attached to the upper surface of the case main body 4A1 so as to slightly protrude from the horizontal operation opening 3B5 of the switch holding portion of the upper case unit 3B, b. The actuator 4B is disposed in the case body 4A1 so as to act in the left-right direction. The front end is connected to the actuator mounting plate 3D of the device case part 3 by the vertical pin 4B1, and the rear end is the right end of the case body 4A1. Part and vertical pin 4B
C.2; The switch holding portion 5 includes a holding plate mounting plate 5A, left and right switch holding plates 5B and 5C, a holding plate open stop sensor 5D, a holding plate close stop sensor 5E, and a sensor group for controlling a switch recovery operation. 5F, a. The holding plate mounting plate 5A includes a flat and substantially square mounting plate 5A1 mounted and fixed on the upper surface of the holding plate mounting base 4A2.
Rear bearing 5A2 erected at the center of the rear side of the mounting plate
And a front bearing 5A erected at the center of the front side of the mounting plate.
3, a power transmission shaft 5A4 penetrated by screwing the front bearing 5A3 and the rear bearing 5A2, and a power transmission shaft 5A.
And a movable movable longitudinal axis 5A screwed near the rear end of the power transmission shaft 5A4.
6, an extension plate 5A7 continuously provided from the front side of the mounting plate 5A1 toward the front, and a switch operation stop position detection piece 5A8 continuously provided downward at the tip of the extension plate 5A7, b. The left switch holding plate 5B is composed of a left plate-shaped member 5B1 and a left plate-shaped member 5B1 formed in a rectangular shape that is long in the horizontal direction.
And a rear side 5B11 of the left plate-shaped body 5B1 which is composed of a holding plate supporting longitudinal axis 5B2 for supporting the right front corner of
Is configured along the rear side of the top plate 3B1 of the upper case unit 3B, c. The right switch holding plate 5C includes a right plate-shaped member 5C1 and a right plate-shaped member 5C1 formed in a rectangular shape that is long in the horizontal direction.
And the rear side 5C11 of the right plate-like body 5C1 which is composed of a holding plate supporting longitudinal axis 5C2 for supporting the left front corner of
Is configured along the rear side of the top plate 3B1 of the upper case unit 3B, d. The right end of the left link 5B3 pivotally connected to the right rear corner of the left plate 5B1 and the left end of the right link 5C3 pivotally connected to the left rear corner of the right plate 5C1 are movable vertically. Linked by a piece 5A6, e. Power transmission shaft 5A4 by holding plate opening / closing motor 5A5
Is turned, the movable movable vertical piece 5A6 becomes the power transmission shaft 5A.
4, the left switch sandwiching plate 5B and the right switch sandwiching plate 5C are respectively pulled left and right with the respective sandwiching plate supporting longitudinal axes 5B2, 5C2 as fulcrums in a state where they are pulled by each link. It turns and becomes parallel to the left and right directions, and is configured to be located on the left and right with a small interval around the switch 2A, f. The holding plate opening limit stop sensor 5D is installed on the left side of the top plate 3B1 of the upper case unit 3B, and is configured to control the opening limit position of the switch holding plates 5B and 5C, g. The holding plate closing stop sensor 5E includes a switch holding portion 5
Installed on the rear side of the extension plate 5A7 of the
B, 5C, and is used for transmitting a command auxiliary signal for switching the rotation direction of the motor, and h. Sensor group 5F for controlling the recovery operation of switch 2A
Is comprised of a normal-time fixed stop position sensor 5F1, a switch re-closing stop position sensor 5F2, and a current cut-off holding release stop position sensor 5F3, and is attached at the front of the case unit 3B above the device case unit 3. Board 3A
2, a position where the stop position detecting piece 5A8 of the switch holding portion 5 can contact from above, from right to left, from the right to the left, the current interruption holding release stop position sensor 5F3, the normal-time fixed stop position sensor 5F1, the switch re-start stop. Be attached in the order of the position sensors 5F2.

[0007]

Embodiments of the present invention will be described below with reference to the drawings based on embodiments. 1 is an automatic breaker recovery device of the present invention. 2 is a general-purpose breaker operated by a breaker automatic recovery device, and 2A is a switch. In this case, the state in which the switch 2A stands up at the center position when viewed from the front indicates a state in which energization is interrupted by an abnormal current, and indicates that the switch 2A is in the current interruption holding position 2A1. (See FIG. 13) A state of standing at the left position 2A2 when viewed from the front indicates that the switch 2A is at the cutoff holding release position 2A2 by the operation of the automatic breaker recovery device. (See FIG. 14) A state in which the switch 2A is standing at the right position when viewed from the front is a state in which the switch 2A is moved from the shut-off release position 2A2 to the normal fixed position 2A3 by the continuous operation of the automatic recovery device, and the recovery is completed. Is shown. (See Fig. 15)

Therefore, the automatic breaker recovery device 1 includes a device case 3, a switch operating portion 4 housed in the device case 3, and a switch holding portion 5. A. The device case unit 3 includes a lower case unit 3A and an upper case unit 3B. (See FIGS. 3 and 5) a. The lower case unit 3A is composed of a horizontal rectangular bottom plate 3A1 on the left and right sides of the plane, and front and rear plates 3A standing and connected to the front and rear sides of the bottom plate.
2, 3A2 and two guide rails 3A3 attached to the upper surface of the bottom plate 3A1 and two guide rails attached to the inner surface of the front and rear plates 3A2 in order to fit and operate the operation unit case main body 4A1. 3A4. b. The upper case unit 3B includes a horizontal rectangular top plate 3B1 on the left and right sides of the plane, and front and rear plates 3B standing upright on the front and rear sides of the top plate.
2, 3B2 and two guide rails 3B3 attached to the lower surface of the top plate 3B1 and two guides attached to the inner surfaces of the front and rear plates 3A2 for fitting and operating the operation unit case main body 4A1. It comprises a rail 3B4 and a horizontal operation opening 3B5 of a switch holding portion provided at a predetermined position on the top plate 3B1. c. The lower case unit 3A and the upper case unit 3B are connected to each other using the connecting plate 3C by abutting the front and rear plates of the lower case unit 3B, and the lower case unit 3A is connected thereto.
An actuator mounting plate 3D is mounted on the left end surface of the upper case unit 3B.

B. The switch operation unit 4 includes an operation unit case 4A and an actuator 4B. (FIG. 7
See) a. The operation unit case 4A includes a case main body 4A1 and a holding plate mounting base 4A2. I. The case main body 4A1 includes a flat rectangular bottom plate 4A11 and front and rear plates 4A12 and 4A12 which are erected on the front and rear sides of the bottom plate.
And a top plate 4A13 stretched between the front and rear plates. B. The holding plate mounting base 4A2 is formed in a flat rectangular shape, and is attached to the upper surface of the case main body 4A1 so as to slightly protrude from the horizontal operation opening 3B5 of the switch holding portion of the upper case unit 3B. . b. The actuator 4B is disposed in the case body 4A1 so as to act in the left-right direction. The front end is connected to the actuator mounting plate 3D of the device case part 3 by the vertical pin 4B1, and the rear end is the right end of the case body 4A1. Part and vertical pin 4B
They are connected by two. c. When the actuator 4B expands and contracts, the holding plate mounting base 4A2 moves along the horizontal operation opening 3B5 of the switch holding portion of the upper case unit 3B.
(See Fig. 8)

C. The switch holding portion 5 includes a holding plate mounting plate 5A, left and right switch holding plates 5B and 5C, a holding plate opening stop sensor 5D, and a holding plate closing stop sensor 5E.
And a sensor group 5F for controlling the switch recovery operation. (See FIG. 9) a. The holding plate mounting plate 5A includes a flat and substantially square mounting plate 5A1 mounted and fixed on the upper surface of the holding plate mounting base 4A2.
Rear bearing 5A2 erected at the center of the rear side of the mounting plate
And a front bearing 5A erected at the center of the front side of the mounting plate.
3, a power transmission shaft 5A4 penetrated by screwing the front bearing 5A3 and the rear bearing 5A2, and a power transmission shaft 5A.
And a movable movable longitudinal axis 5A screwed near the rear end of the power transmission shaft 5A4.
6, an extension plate 5A7 continuously provided from the front side of the mounting plate 5A1 toward the front, and a switch operation stop position detecting piece 5A8 continuously provided downward at the tip of the extension plate 5A7. b. Referring to FIG. 9, the left switch holding plate 5B includes a left plate-shaped body 5B1 formed in a rectangular shape that is long in the horizontal direction on the plane.
The left plate-like body 5B1 is constituted by a holding plate supporting longitudinal axis 5B2 that supports the right front corner of the left plate-like body 5B1.
The rear side 5B11 is configured along the rear side of the top plate 3B1 of the upper case unit 3B. c. Referring to FIG. 9, the right switch holding plate 5C includes a right plate-shaped body 5C1 formed in a rectangular shape that is long in the horizontal direction on the plane.
The right plate-shaped member 5C1 is constituted by a holding plate supporting longitudinal axis 5C2 that supports the left front corner of the right plate-shaped member 5C1.
The rear side 5C11 is configured along the rear side of the top plate 3B1 of the upper case unit 3B. d. The right end of the left link 5B3 pivotally connected to the right rear corner of the left plate 5B1 and the left end of the right link 5C3 pivotally connected to the left rear corner of the right plate 5C1 are movable vertically. They are connected by a piece 5A6.

E. When the power transmission shaft 5A4 is rotated by the holding plate opening motor 5A5, the transmission movable vertical
A6 moves in the longitudinal direction of the power transmission shaft 5A4, that is, forward and backward. As a result, the left switch holding plate 5B
And the right switch holding plate 5C are pulled by each link, and each holding plate supporting longitudinal axis 5B2, 5C2 is used as a fulcrum.
Each of them turns left and right to form a parallel state with the left and right directions. The inner sides of the rear ends of the left switch holding plate 5B and the right switch holding plate 5C in such a parallel state are the conventional holding plate closing stop provided on the front side of the extension plate 5A7 of the switch holding portion 5. The shutter 5E is configured to stop at the closing limit by the operation of the sensor 5E and to be located on the left and right with a small interval around the switch 2A. f. The holding plate opening limit stop sensor 5D is installed on the left side of the top plate 3B1 of the upper case unit 3B, and is configured to control the opening position of the switch holding plates 5B and 5C. g. The holding plate closing stop sensor 5E includes a switch holding portion 5
Installed on the rear side of the extension plate 5A7 of the
B and 5C are used for controlling the opening stop position, and are also used for transmitting a command auxiliary signal for switching the rotation direction of the motor (forward / reverse). The holding plate opening stop sensor 5D has the same role. h. Sensor group 5F for controlling the recovery operation of switch 2A
Is composed of a normal-time fixed stop position sensor 5F1, a switch re-closing stop position sensor 5F2, and a current interruption holding release stop position sensor 5F3. (See FIG. 11) The mounting position is such that the stop position detection piece 5A8 of the switch holding portion 5 can come into contact with the front plate 3A2 of the case unit 3B above the device case portion 3 from above, from right to left. , The current interruption holding release stop position sensor 5F3, the normal-time fixed stop position sensor 5F1, and the switch re-start stop position sensor 5F2 are attached in this order.
(See FIG. 4) The left and right switch holding plates 5 that come into contact with the breaker
B and 5C are made of a non-electrically conductive and highly elastic synthetic resin material.

The mechanism will be described more specifically.
The automatic recovery device 1 for the side breaker of the breaker 2 is disposed, and the motor 5A5 for opening and closing the switching plates 5B, 5C mounted on the automatic recovery device 1 for the rotation is operated based on an external operation command signal. Is started and the power transmission shaft 5A4 is rotated, so that the transmission movable piece 5A6 starts moving and the left and right links 5B3, 5C
3, thereby pulling the left and right switch holding plates 5B,
5C turns left and right, and switches 2A of breaker 2
Is held in a non-contact state, the sandwiching plate closing limit stop sensor 5D operates to stop the sandwiching plate opening / closing motor 5A5. Thereafter, the actuator starts the retracting operation, moves the operation unit case 4A from the cut-off holding position where the switch 2A is located to the holding release position, and operates the current cut-off holding release stop position sensor 5F3 installed at the end point of the movement to activate the reactor. The operation of 4B is stopped. Thereafter, the reversing operation is started, the switch 2A is moved from the holding release position to the switch re-supplying position, the switch re-supply stop position sensor 5F2 is activated, and the reversing operation is stopped. further,
The re-inversion operation is started, and the left and right switch holding plates 5B, 5C
Move to the point where the normal time stop sensor detects and stop. Further, the holding plate opening / closing motor 5A5 starts the reverse rotation operation, turns the left and right switch holding plates 5B, 5C in the opening direction, and stops the movement operation of the holding plate opening / closing motor 5A5 by the detection of the holding plate opening limit stop sensor 5E. This completes a series of automatic recovery operations for the breaker and returns to the standby state.

Further, a basic operation related to restoration of the present apparatus will be described with reference to FIGS. FIG. 18 shows a state in which everything is functioning normally. Next, an abnormal current flows, the breaker 2 operates, the switch 2A moves to the cut-off holding position, the current is cut off, and the switch holding plates 5B, 5C start the closing operation shown in FIG. After the holding plates 5B and 5C have moved to predetermined positions on both sides of the breaker recovery switch 2A shown in FIG. 13, they stop, and then the switch holding portion moves, and the switch 2 of the breaker 2 is moved.
A is moved from the current interruption holding position to the holding release position shown in FIG. 14, and then, as shown in FIG. 15, the switch holding portion is moved, and the switch 2A of the breaker 2 is moved to the closing position, and is turned on again. After the completion of the recovery, the motor is stopped, re-moved by re-inversion, and returns to the normal position shown in FIG. Further, left and right switch holding plates 5B, 5C
Releases the pinching of the switch 2A by the turning movement shown in FIG. 17, and after the release, the automatic recovery of the breaker 2 is completed as shown in FIG. The left and right switch holding plates 5B, 5C are also returned to the normal home position, that is, to the standby position for the normal operation by a series of these operations, and the automatic recovery operation of the breaker 2 is completed.

The recovery operation position and each operation position will be described with reference to FIGS. FIG. 11 shows a state in which the breakers are normally on standby, the automatic breaker recovery device is also in a standby state at the normal fixed position 2A3, and all are functioning normally. FIG. 12 shows that the breaker 2
Is activated, the current is cut off, and the switch holding plates 5B, 5C
Indicates a state in the middle of closing. FIG. 13 shows a state where the left and right switch holding plates 5B and 5C are stopped at predetermined positions on both sides of the switch 2A. FIG. 14 shows the left and right switch holding plates 5.
B, 5C have moved to the right, and the switch 2A has been moved from the current interruption holding position 2A1 to the interruption holding release position 2A2. FIG. 15 shows a state in which the switch holding plates 5B and 5C have moved to the left, the switch 2A has moved to the closing position, and restoration by re-closing has been completed. FIG. 16 shows a state in which the left and right switch holding plates 5B and 5C have been restored by re-input, moved to the right, and returned to the normal position 2A3 in a normal state.
FIG. 17 shows a state where the left and right switch holding plates 5B and 5C are being opened. FIG. 18 shows a state in which the automatic recovery of the breaker 2 is completed, and the switch holding plates 5B and 5C are also in the normal position 2A3 in a normal state, that is, a state returned to FIG. The automatic recovery operation of the breaker 2 is completed by the above series of operations.

The operation flow will be described. (Refer to FIG. 19) a. The position of the switch 2A of the normal breaker is ON (upper) (step 100) primary voltage is present, secondary voltage is present,
No trip, operation mode is automatic. Breaker 2 trips due to overcurrent or leakage, no secondary voltage (step 101) c. After n minutes (for example, 30 minutes) with a timer (Step 102) d. Control unit requests actuator to restore (switch 2
A trip → OFF → ON) (Step 103) If the actuator is not operating, proceed to step 115 and issue an actuator abnormality alarm. (Step 115) e. After the recovery operation, if the trip is YES again, the process proceeds to step 105. What. If the trip is NO for 60 minutes after the recovery operation, the process goes to step 106 via step 104. If yes, return to step 100. Uru. Check for leakage and overcurrent at the secondary voltage. (Step 106) h. Wait for n minutes (for example, 10 minutes) with a timer. (Step 10
7) Re. The controller requests a recovery from the actuator. (Step 108) (trip → OFF → ON) If the actuator is not operating, proceed to step 114 and issue an actuator abnormality alarm (step 115). After the recovery operation, if the trip is YES again, the process proceeds to step 110. Le. If the trip is NO for 60 minutes after the recovery operation, the process proceeds from step 109 to step 111. If yes, return to step 100.ヲ. Check for leakage and overcurrent at the secondary voltage. (Step 111) Breaker recovery error (step 112) f. If the alarm reset is YES, the process returns to step 100. If NO, the breaker recovery device is determined to be abnormal. Yo. In order to confirm the abnormality of the breaker recovery device, the control unit is recovered by a switch or communication control of the breaker recovery device. (Step 114) In the text, for YES, the reference numeral in the drawing is displayed as Y, and for NO, the reference numeral in the drawing is displayed as N.

[0016]

According to the present invention, by arranging the device on the side of the breaker, it is possible to avoid a double layer with the primary and secondary wiring paths, and to realize an iron recovery operation vertical bar boom. Instead, a resin material with high non-conductivity and excellent elasticity is used for the contact part with the breaker, protecting the breaker body and switches from damage. Further, this mechanism is useful in that the present mechanism can be applied to a range from a small breaker to a large breaker.

[Brief description of the drawings]

FIG. 1 is an overall perspective view.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a perspective view in which a part of a lower case alone is cut away.

FIG. 4 is an exploded perspective view of the same.

FIG. 5 is a perspective view of a part of the upper case alone cut away.

FIG. 6 is an exploded perspective view of the same.

FIG. 7 is a perspective view in which a part of a switch operation unit is cut away.

FIG. 8 is an exploded perspective view of the same.

FIG. 9 is a perspective view of a switch holding portion of the breaker.

FIG. 10 is an exploded perspective view of a switch holding portion of the breaker.

FIG. 11 is an overall plan view.

FIG. 12 is a plan view during the holding operation.

FIG. 13 is a plan view when the holding operation is completed.

FIG. 14 is a plan view when the switch holding section has completed moving to a holding mechanism release position.

FIG. 15 is a plan view when the switch holding section has completed moving to the switch re-enter position.

FIG. 16 is a plan view showing a state in which the switch holding section has returned to a normal home position.

FIG. 17 is a plan view in which the switch holding plate is moving to a predetermined position.

FIG. 18 is a plan view of a standby state in a normal state after a series of operations is completed.

FIG. 19 is a flowchart of the operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Breaker automatic recovery device 3 Case part for apparatus 4 Switch operation part 5 Switch holding part

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI H01H 73/02 H01H 73/02 A

Claims (2)

(57) [Claims] 1. A motor (5A5) arranged on the side of a breaker (2), and a switch (2A) of the breaker (2) provided on a holding plate opening / closing motor (5A5) provided in an apparatus case (3).
When the left and right switch clamping plates (5B, 5C) are pinched by the turning operation, the clamping plate closing limit stop sensor (5E) senses the operation and stops the operation. The actuator (4B) provided in the apparatus starts operating, moves the switch (2A) from the current interruption holding position to the holding release position, and detects the current interruption holding release stop position sensor (5F2) to detect the reactor (4B). Is stopped, and then the reversing operation is started, the switch (2A) is moved to the switch re-closing position, and stopped by the detection of the switch re-closing stop position sensor (5F2). Start the re-inversion operation and set the normal time fixed stop position sensor (5F
1) It moves to the point where it senses and stops. After that, the holding plate opening / closing motor (5A5) starts reversing operation, and the switch holding plates (5B, 5C) rotate to release the holding of the switch (2A). An automatic breaker recovery device characterized in that it is configured to start and stop when the holding plate opening limit stop sensor (5D) senses it to complete a series of recovery operations. 2. A switch (2A), as viewed from the front, when a current is interrupted by an abnormal current, a current interruption holding position (2A).
1) is at the center, the cut-off hold release position (2A2) for re-input is moved to the left position, and when current is supplied, it moves to the right position, which is the normal position (2A3), and the restoration is completed. For a general-purpose breaker (2) configured as follows,
It comprises the following device case (3) for controlling the general-purpose breaker (2), a switch operating unit (4) housed in the device case (3), and a switch clamping unit (5). An automatic breaker recovery device characterized by being performed. A. The device case (3) is a lower case unit (3
A) and an upper case unit (3B). The lower case unit (3A) has a horizontal rectangular bottom plate (3A1) on the left and right sides of the plane, and front and rear plates (3A2, 3A2) and a case body for the operation unit (4A1)
And a guide rail (3A4) attached to the upper surface of the bottom plate (3A1) and a guide rail (3A4) attached to the inner surface of the front and rear plates (3A2). (3B) is a horizontal rectangular top plate (3B1) on the left and right of the plane, front and rear plates (3B2, 3B2) erected continuously on the front and rear sides of the top plate, and a case body (4A1) for the operation unit.
The guide rail (3B3) attached to the lower surface of the top plate (3B1), the guide rail (3B4) attached to the inner surfaces of the front and rear plates (3A2), and the top plate (3B1)
A lower case unit (3A) and an upper case unit (3B).
Means that the front and rear plates are in contact with each other from above and below and are connected using a connecting plate (3C), and an actuator is provided on the left end surfaces of the lower case unit (3A) and the upper case unit (3B). B. A mounting plate (3D) is mounted. The switch operation unit (4) is an operation unit case (4A)
The operation unit case (4A) includes a case body (4A1) and a holding plate mounting base (4A2). The case body (4A1) includes a flat rectangular bottom plate (4A11). Front and rear plates (4A12, 4A12) erected on the front and rear sides of the bottom plate
And a top plate (4A13) stretched between the front and rear plates. The holding plate mounting base (4A2) is formed in a flat rectangular shape, and the upper case unit (4A1) is placed on the upper surface of the case body (4A1). (3B) is attached so as to slightly protrude from the horizontal operation opening (3B5) of the switch holding portion, and the actuator (4B) is disposed in the case body (4A1) so as to act in the left-right direction. B. is connected to the actuator mounting plate (3D) of the device case (3) by a vertical pin (4B1), and the rear end is connected to the right end of the case body (4A1) by a vertical pin (4B2). The switch holding portion (5) is a holding plate mounting plate (5A)
A left and right switch holding plate (5B, 5C), a holding plate opening stop sensor (5D), a holding plate closing stop sensor (5E), and a sensor group (5F) for controlling the switch recovery operation. The holding plate mounting plate (5A) is provided with a holding plate mounting base (4A).
2) A substantially square mounting plate (5) placed and fixed on the upper surface of (2)
A1), a rear bearing (5A2) erected at the center of the rear side of the mounting plate, a front bearing (5A3) erected at the center of the front side of the mounting plate, a front bearing (5A3) and a rear bearing (5A2). A power transmission shaft (5A4) penetrated in a screwed state, a holding plate opening / closing motor (5A5) attached to a front end of the power transmission shaft (5A4), and a power transmission shaft (5A4).
4) Transmission movable longitudinal axis screwed near the rear end (5A6)
An extension plate (5A7) continuously connected from the front side of the mounting plate (5A1) to the front; and a switch operation stop position detection piece (5) connected downward at the tip of the extension plate (5A7).
A8), and the left switch holding plate (5B) supports the left plate-like body (5B1) formed in a rectangular shape that is long in the horizontal direction and the right front corner of the left plate-like body (5B1). And the left plate-like body (5B2).
1) The rear side (5B11) is the upper case alone (3B)
The right switch holding plate (5C) is configured along the rear side of the top plate (3B1), and the right plate-shaped body (5C1) and the right plate-shaped body that are formed in a rectangular shape that is long in the horizontal direction. (5C1) is composed of the holding plate supporting longitudinal axis (5C2) supporting the left front corner, and the right plate-like body (5C1).
1) The rear side (5C11) is the upper case alone (3B)
And the right end of the left link (5B3) pivotally connected to the right rear corner of the left plate (5B1) and the right plate (5C1). And the left end of the right link (5C3) pivotally connected to the left rear corner of the power transmission shaft (5A6), and is connected to the power transmission shaft (5A5) by the holding plate opening / closing motor (5A5).
When 4) is rotated, the transmission movable vertical piece (5A6) moves in the longitudinal direction of the power transmission shaft (5A4), and the left switch holding plate (5B) and the right switch holding plate (5C).
Are turned to the left and right with the respective holding plate supporting longitudinal axes (5B2, 5C2) as fulcrums in a state of being pulled by each link, and become parallel to each other in the left and right direction with a small interval around the switch (2A). The holding plate opening limit stop sensor (5D) is installed on the left side of the top plate (3B1) of the upper case unit (3B) and opens the switch holding plates (5B, 5C). The limiter position is controlled. The holding plate closing limit sensor (5E) is installed on the rear side of the extension plate (5A7) of the switch holding portion (5), and the limiter of the switch holding plates (5B, 5C) is opened. A group of sensors (5) that are configured to control the stop position, are also used to transmit a command auxiliary signal for switching the rotation direction of the motor, and control the recovery operation of the switch (2A).
F) is composed of a normal-time fixed stop position sensor (5F1), a switch re-closing stop position sensor (5F2), and a current interruption hold release stop position sensor (5F3). The current is cut off from right to left at a position where the stop position detection piece (5A8) of the switch holding portion (5) can contact the front plate (3A2) of the case unit (3B) above 3) from above. Hold release stop position sensor (5F3), normal stop position sensor (5F1), switch re-start stop position sensor (5F3)
They must be attached in the order of F2).