JP2718135B2 - Switchgear operating device - Google Patents

Description

The present invention relates to an operating device for accumulating an operating spring of a switch.

B. Summary of the Invention The present invention is to rotate and drive a main shaft for operating a switch, to which a crank lever for compressing a closing cam and an operation spring is fixed, or to release the power by disconnecting a drive system. In the operating device, a hooking lever is installed on the main shaft for operating the switch, and a pushing claw that is rotatable and can be disengaged from the hooking lever is installed on a side surface of the rotated large gear, and the pushing claw is operated. Means for mooring and accumulating energy with the hook lever at a position after the spring is released, means for turning the push claw to separate it from the hook lever at a separation position near the dead point of the crank lever By arranging and arranging, it is possible to ensure sufficient operation with large power transmission with a simple configuration.

C. Prior Art Conventionally, an opening / closing operation mechanism such as a vacuum switch comprises a spring operating device 1, a trip link mechanism 2, and a trip mechanism 3 as shown in FIG. The switch 5 is operated through the switch. This spring operating device 1
As an example, the rotation of a motor 6 is reduced by a reduction gear 7 as in a feed claw type shown in FIG.
The feed claw member 9 fixed to the main shaft 11 is reciprocated, and the ratchet wheel 10 is rotated to accumulate the operation spring 13 via the crank lever 12 provided on the main shaft 11.

The holding hook mechanism 15 installed at the end of the spindle 11
, To maintain the charged state of the operation spring 13,
By driving the release unit 16 to release the holding hook mechanism 15, the ratchet wheel 10 starts rotating rapidly in the feed direction by the feed claw 9, causing the idle state in the feed direction in which the engagement with the feed claw 9 is released. The switch 5 is turned on by the operation cam 14 fixed to the main shaft 11 via the tripping link mechanism 2 and the three-phase connecting link mechanism 4.

As another example of the spring operating device 1, as in a clutch type shown in FIG. 15, a clutch 18 (mechanical or electric type) is attached to a main shaft 11 driven by a motor 6 via a reduction gear mechanism 17. The main shaft 11 has an operation cam
14 and the holding hook mechanism 15 and its release part 16 are installed,
Furthermore, it is connected to the end of the operation spring 13 via the crank lever 12.

Then, the motor 6 is driven, the main shaft 11 is rotated through the reduction gear mechanism 17, the operation spring 13 is pulled and stored, and this state is held by the holding hook mechanism 15. In this state, the clutch 18 is disengaged, and the main shaft 11 is separated from the drive system of the motor 6 so as to be freely rotatable. Further, when there is an input command, the release unit 16 is driven to release the holding hook mechanism 15, and the operation link 14 fixed to the main shaft 11 causes the trip link mechanisms 2 and 3 to move.
The switch 5 is turned on via the phase connection link mechanism 4.

D. Problems to be Solved by the Invention In the conventional switch operating device as described above, the feed claw type firstly requires components such as a feed claw, a ratchet wheel, and an eccentric bearing member. There is a problem that the number of parts is large and the mechanism is complicated.

In addition, the clutch type, even if it is a mechanical or electric clutch, is difficult to transmit large power, and its operation is less reliable. Even if the power of the motor is turned off, there is a problem that the gears of the large reduction gear mechanism continue to rotate due to inertia, and an excessive force may be applied to the holding hook mechanism.

In view of the above, the present invention is an operation device having a simple configuration and sufficiently withstanding a large driving force transmission, and furthermore, an operation device for a switch that speeds up the operation or ensures the operation sufficiently. It is intended to provide new.

E. Means for Solving the Problems According to the configuration of the invention according to claim 1 for achieving the above object, the operation spring is charged by half rotation in the same direction and the operation is performed by rotating the remaining half rotation. A main shaft for releasing the spring and closing the switch is provided, a base end of a hook lever is fixed to the main shaft, a large gear is rotatably provided at a position adjacent to the hook lever on the main shaft, and a motor is mounted on the large gear. The output shaft is connected in an interlocking manner, and a push claw is provided rotatably on the side surface of the large gear via a shaft pin that is substantially parallel to the main shaft. A spring is provided which is rotated in a direction away from the main shaft to disengage from the hook lever, and a pushing claw is engaged with the hook lever in a state where the operation spring is completely released against the urging force of the spring. 3. A fixed cam is provided. The invention according to claim 3 is characterized in that a plurality of the push claws and the springs are provided along the circumference of the large gear in addition to the above. At the rear end of the gear, a projection protruding outward in the radial direction of the large gear is formed, and immediately after the accumulation of the operation spring is completed, the projection engages to forcibly push the tip of the push claw. A release pin is provided to be separated from the hook lever.

F. Action With the above-described configuration, just by rotating and driving the large gear, the pressing claw is rotated by the fixed cam to be anchored to the hooking lever, and the main shaft is rotated to accumulate the operation spring and accumulate. When the force is completed, the push claw and the catch lever are separated from each other, and the operation for preparing for force release is automatically performed.

Further, in the case where a plurality of push claws are provided, only a small rotation of the large gear causes the next push claw to start the energy storing operation, so that the idle rotation of the large gear can be reduced and the energy storing time can be shortened. It has the effect of:

Further, in the push claw provided with a protrusion that hits the release pin arranged at a predetermined position, the protrusion hits the release pin at a predetermined position of the dead point where the energy accumulation is completed, the push claw is rotated, and the force is forced. This has the effect of being separated from the hooking lever, ensuring operation and preventing overcharging.

G. Embodiment Hereinafter, an embodiment of the switch operating device of the present invention will be described with reference to FIGS. FIGS. 1 to 12
In the figure, the same reference numerals are given to portions corresponding to the above-described conventional example shown in FIGS. 13 to 15, and a detailed description thereof will be omitted.

First, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic perspective view of a main part of the operating device shown in FIG. 1, in which 6 is a motor, 7 is a speed reducer, 8 is a reduction shaft, and 11 is a main shaft.

A small gear 19 is fixed to the reduction shaft 8, and this small gear 19 is
The gear 11 is configured to mesh with a large gear 21 rotatably mounted on a shaft via a ball bearing 20.

Further, a hook lever 22 is fixed to the main shaft 11 adjacent to the large gear 21 and coaxial with the large gear 21. This hook lever 22
Is formed at the free end thereof so as to protrude the catching small column 23 so as to protrude laterally, and form a vertical side portion, which is rearward in the rotation direction indicated by the arrow A, on a vertical pressing side surface 22a. I do.

At the same time, a predetermined position of an intermediate portion of a push claw 24 made of a semicircular plate material is pivotally attached to a side surface portion of the large gear 21 on the hook lever 22 side by a shaft pin 25 so as to be rotatable. Furthermore, this push nail
A tension coil spring 26 is stretched between the rear end of the gear 24 and the side surface of the large gear 21.
It is urged to rotate in the direction shown by. Also this push nail
In order to regulate the rotation range of the gear 24, when the push claw 24 is rotated by a predetermined angle in the direction of arrow B, a pressing pin 27 that hits the rear end and stops the rotation operation is protruded at a predetermined position on the side surface of the large gear 21. I do. Reference numeral 33 denotes a push pin for pressing the push claw excessively. At the tip of the push claw 24, a pressing side surface 24a is formed so as to be a vertical flat side surface that comes into contact with the abutting side surface 22a of the hook lever 22 described above. Furthermore, the outer peripheral side portion,
A sliding contact guide surface 24b is formed, which is a substantially U-shaped inclined surface serving as a cam surface slidingly contacting the fixed cam 31 installed at a predetermined location.

In addition, a holding hook 29 is provided so that the above-described hooking small column 23 of the hooking lever 22 is locked and held at a predetermined position of the energy storage standby. The holding hook 29 is configured such that one end of the lever-shaped member is pivotally connected to the shaft 30 and is moved in the direction of arrow C by a release portion (not shown) when necessary. A small concave portion 28 for receiving the hooking small column 23 is formed.

In addition to the above-described configuration, an operation cam 14 similar to the conventional one is installed on the main shaft 11, and an operation spring 13 is further connected and mounted via a crank lever 12 so that the operation spring 13 can be stored and released.

The operation cam 14 is incorporated as the spring operation device 1 in the conventional switch device shown in FIG.
It is interlocked with the phase connection link mechanism 4 and performs an opening / closing drive operation of the switch 5.

Next, the operation of the apparatus of the present embodiment configured as described above will be described.

First, the crank lever 12 shown in FIG. 1 to FIG.
At the dead point position on the energy storage side of the operation spring 13, the large gear rotated by the small gear 19 driven to rotate by the motor 6.
In response to the turning operation of 21, the push claw 24 is in a state where the main shaft 11 is turned while being anchored to the hooking lever 22, and at this dead point position, the torque by which the operation spring 13 turns the main shaft 11 is reduced. It is zero.

Next, when the large gear 21 is slightly rotated in the direction of arrow A from the dead point position on the energy storage side, the operation spring 13
The torque for rotating the main shaft 11 in the direction of the arrow A rapidly increases, and the hook lever 22 is quickly turned.
The holding hook 29 is fitted into the small concave portion 28 to be in the locked and held state.

At the same time, by the rotation of the hook lever 22 at a small angle, the pressing side surface 22a separates from the pressing side surface 24a of the pressing claw 24,
When the connection state with the pressing claw 24 is released, the released pressing claw 24 rotates the tension coil spring 26 in the direction of the arrow B by the urging force, and hits the pressing pin 27 and stops.

In this manner, when the push claw 24 is rotated in the direction of arrow B as shown in FIG. 4, the pushing side surface 24a at the tip thereof is located outside the pressing side surface 22a of the hook lever 22.

Therefore, due to the inertia of the motor 6, the small gear 19, and the large gear 21 of the drive system, the large gear 21 does not stop at the same time as the motor stop command, and as shown in FIG. And the hook lever 22 has come off, so the hook lever 22
There is no overcharge that causes more rotation.

Next, a case where the operation spring 13 is released to operate the switch will be described.

In this case, from the state shown in FIG. 4, the release hook 16 such as an electromagnet (not shown) is actuated to slightly rotate the holding hook 29 in the direction of arrow C, and the hook lever 22 is stopped from the small recess 28. The engaged small pillar 23 is released. Then, the spindle
Numeral 11 denotes an urging force of the operation spring, and as shown in FIG. At this time, the operation cam 14 also rotates integrally, and although not shown, a three-phase link mechanism interlocked with the operation cam 14 operates the switch with a quick operation.

 Next, a case where the operation spring 13 is charged will be described.

In this case, the motor 6 is driven from the state shown in FIG.
゜ Rotate. Then, as shown in FIG. 6, at the position where the push claw 24 should be moored to the hook lever 22, the fixed cam 31 installed corresponding to this predetermined position is brought into contact with the sliding contact guide surface 24b on the outer periphery of the push claw 24. 6, the push claw 24 is rotated from the state shown by the dashed line in FIG. 6 to the state shown by the solid line with the rotation of the large gear 21, and the pressing side surface 24 a of the push claw 24 is
The second pressing surface 22a is pressed against the second pressing surface 22a.

Then, as the large gear 21 is further driven to rotate, the push claw 24 is pressed against the urging force of the operation spring 13,
As shown in FIG. 7, the hook lever 22 is rotated in the direction of arrow A.

In this state, even if the fixed cam 31 is not supported due to the friction of the surface contact and the angle of the contact surface, etc.
And the catch lever 22 does not come off.

In this way, the operation cycle of energizing the operation spring 13 through the state shown in FIG. 7 to the dead point position shown in FIGS. 1 and 2 at the beginning of the operation description is repeated.

Next, a second embodiment of the present invention will be described with reference to FIGS.

The second embodiment is intended to reduce the needless feed of the large gear when the operating spring is charged. That is, as shown in the figure, the mechanism of the three pushing claws 240, 241 and 242 is arranged at three divided positions on the side of the large gear 21.

With the configuration described above, when the operation of storing the operation spring 13 is started from the state immediately after the release shown in FIG. 10, the motor 6 is driven to rotate the large gear 21. Then, when the angle of rotation is about 40 °, the pushing claw 241 is fixed to the fixed cam 3
In the first step, as shown in FIG. Further, with the rotation of the large gear 21, the hook lever 22 is sent in the direction of arrow A and is sent to the dead point position shown in FIG. After the release, the three push claws 240, 241, and 242 are sequentially operated such that the next push claws 242 send the catch lever 22.

Therefore, the gear wheel 21 does not idle at the angle between the mutually adjacent push claws 240, 241 and 242, but can rotate to the next energy storage operation only by rotating the angle by about 40 °. The operation of the large gear can be omitted, and the operation time can be reduced.

The configuration, operation, and effects other than those described above are the same as those of the first embodiment described above, and thus description thereof will be omitted.

Next, a third embodiment of the present invention will be described with reference to FIG.

In the third embodiment, the push claw and the catch lever are reliably separated from the dead point position, thereby preventing overcharging.

For this reason, in the present example device, an L-shaped projection 24c is protruded from the rear end of the push claw 24. Further, the release pin 32 is arranged and configured at a predetermined position where the push claw 24 comes into contact with the tip of the protrusion 24c at a position where the push claw 24 is separated from the hook lever 22 near the dead point position.

With this configuration, when the gear 21 overruns due to inertia from the dead point position, the push claw 24
The projection 24c of the lever contacts the release pin 32, and the push claw 24 is rotated in the direction of arrow B according to the excessive rotation operation of the large gear 21 to forcibly separate from the hook lever 22. Therefore, the extension coil spring
By the urging force of 26, the separating operation can be executed more reliably and the overcharge can be prevented, as compared with the method of separating the push claw 24 and the catch lever 22.

Note that the configuration, operation, and effects of the third embodiment other than those described above are the same as those of the above-described first embodiment, and a description thereof will be omitted.

H. Effects of the Invention As described in detail above, according to the switch operating device of the present invention, a hooking lever is installed on a switch operating main shaft that is interlocked with an operating spring via a crank lever, and is driven to rotate. The push claw pivotally attached to the side portion of the large gear is rotated so as to be able to be engaged and disengaged from the hooking lever, and the large gear is driven to rotate so that the push claw is in a position after the operation spring is released. Means for rotating the push claw to be moored with the catch lever is provided, and the large gear is rotated while the push claw is mooring the catch lever to accumulate the operation spring and cut off near the dead point of the crank lever. Since the means for rotating the push claw at the separated position and separating the push claw from the hooking lever is arranged, there is an effect that the configuration is simple, the number of parts is small, and manufacturing can be performed at low cost. In addition, there is an effect that the power transmission for storing the operation spring is sufficiently endured and the power transmission can be automatically disconnected and disconnected.

Further, in the case where a plurality of push claw mechanism portions are provided on the large gear, there is an effect that when the operation spring is charged, the time for idling the large gear can be shortened, and the operation time can be shortened as a whole.

Further, a projection is provided on the push claw, and a release pin is provided at a predetermined position corresponding to the dead point when the operation spring is charged, hitting the push claw projection, rotating the push claw and performing a separating operation. In this case, there is an effect that the separation between the push claw and the catch lever is surely executed, and the overcharge can be prevented.

[Brief description of the drawings]

FIG. 1 is an overall schematic diagram showing a first embodiment of a switch operating device according to the present invention, FIG.
FIG. 3 is a plan view of the main part, FIGS. 4 to 7 are enlarged schematic diagrams of the main part for explaining the operation, respectively, and FIG. 8 is a main part showing a second embodiment of the present invention. 9 is a plan view of the main part, FIGS. 10 and 11 are enlarged main part schematic diagrams showing the operation, respectively, and FIG. 12 is a third embodiment of the present invention. FIG. 13 is an overall schematic diagram of a conventional switchgear, FIG. 14 is a schematic configuration diagram showing an example of the operation device portion, and FIG. 15 is a schematic configuration diagram showing another example. FIG. 5 ... Switch, 11 ... Spindle, 12 ... Crank lever, 13
…… Operation spring, 19 …… Small gear, 21 …… Large gear, 22 …… Hook lever, 22a …… Pressure side, 23 …… Hook small column, 24 ……
Push claw, 24a …… Pressing side, 24b …… Sliding guide surface, 24c…
… Protrusion, 29 …… retention hook.

Claims (3)

(57) [Claims] 1. A main shaft for storing an operating spring by half-turning in the same direction to accumulate an operating spring and releasing the operating spring by turning the remaining half-turn to turn on a switch, and the main shaft is provided with a hook lever base. An end portion is fixed, a large gear is rotatably provided at a position adjacent to the hook lever on the main shaft, an output shaft of the motor is interlocked to the large gear, and a shaft pin substantially parallel to the main shaft is provided on a side surface of the large gear. A push claw is provided so as to be freely rotatable, and at the time of completion of the energy storage of the operation spring, a spring is provided for rotating the front end of the push claw viewed from the rotation direction in a direction away from the main shaft to disengage with the catch lever, An operating device for a switch, wherein a fixed cam for engaging a push claw against a biasing force of the spring is provided on a hook lever in a state where the operation spring has been completely released. 2. The switch operating device according to claim 1, wherein a plurality of said pushing claws and said springs are provided along a circumference of the large gear. 3. A rear end portion of the push claw is formed with a protrusion for detecting the radially outer side of the large gear, and the protrusion engages and pushes immediately after the operation spring is completely charged. The switch operating device according to claim 1 or 2, further comprising a release pin for forcibly pulling the tip of the claw away from the hook lever.