JP2666956B2 - Switchgear operating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a switch operating device provided with an operation completion confirmation device.

(Prior art) Generally, switch contacts such as disconnectors have main contacts “ON” and “OFF”
An operation completion confirmation device (hereinafter, referred to as a motion confirmation device) is provided in the operation device to detect a state and notify an operator of an open / closed state of the switch. Conventionally, the operation confirmation device uses a microswitch to detect the end of the rotation of the main shaft of the operating device using a "operation confirmation limit switch system".
And an "auxiliary switch system" in which detection is performed using the contacts of an auxiliary switch configured to interlock with the main shaft of the operating device. Here, FIG. 4 and FIG. 6 show a configuration diagram of the above-mentioned operation confirmation limit switch system. The cam 28 attached to the main shaft 33 of the operating device connected to the device main body 31 via the main shaft 1, the joint 2, the lever 7, and the drive lever 34, at a point where a predetermined rotation is performed,
It has a structure in which a pair of micro switches 29 and 30 attached to the plate 13 are switched. In the figure, the cam 28, which has pressed one micro switch 29 after the operation is completed, switches this micro switch 29 at the start of the next operation, and switches the other micro switch 30 at the end of the operation.

At this time, the adjusting bolt 14 is set so that the microswitches 29 and 30 are switched in a state where the main contacts of the switch are completely operated.
Is adjusting the position of the plate 13 to which the micro switch is attached. Thereby, the operation of the main contact is always completed at the time when the micro switches 29 and 30 are switched, and by taking the contact of the micro switches 29 and 30 in the operating device,
The status of the main contact is displayed.

On the other hand, the auxiliary switch system is generally used in a switch having a high-speed operation device such as a spring drive. In FIG. 6, the status is displayed by taking the contact point of the auxiliary switch 32 interlocked with the main shaft 33 of the operating device.

(Problems to be Solved by the Invention) However, there are the following problems in the limit switch system and the auxiliary switch system for confirming the operation of the moving accuracy device as described above.

Generally, the operating device is provided with a natural opening / closing lock device shown in FIGS. 5 and 6 so that the main shaft is held at the end of the operation and the main shaft is not rotated by an external force such as the weight of the main contact of the switch.

In the figure, the main shaft 1 is fixed by the main shaft holding pin 3 attached to the joint 2 connected to the main shaft 1 by a spline being held by the notch of the catch 5 pressed by the spring 4. When the next operation is started, the lever 7 rotates clockwise, and the catch release pin 9 attached to the lever flips up the catch 5 to release the locking mechanism of the main shaft holding pin 3 and the catch 5. After that, the lever 7 and the joint 2 are engaged to start the rotation of the spindle 1. After a predetermined rotation, the spindle holding pin 6 attached to the joint 2 enters the notch of the catch 10 to lock the rotation of the spindle 1. It has a structure to do.

As described above, the operation confirmation of the conventional moving accuracy limiter system detects the operation state of the main contact, which is the original purpose, because the adjustment is performed so that the microswitch is switched after the operation of the main contact of the switch is completed as described above. Although it has a function, it is a method of detecting the completion of operation at the rotation angle of the spindle using a micro switch with an adjustment accuracy of about 1 to 2 mm, so the mechanical operation end of the operating device, that is, the spindle holding pin There is a problem that it cannot always be said that the state of being completely held by the catch is detected. For example, in FIG.
Even if the spindle 1 stops just before entering the notch of the catch 10, there is a possibility that the completion of the operation may be indicated by the adjustment of the microswitch 30 in FIG. 4 or by the deviation after the adjustment.

In this case, when the main shaft 1 is rotated clockwise by an external force such as the weight of the main contact of the switch, the auxiliary switch interlocked with the main shaft 1 is also switched, and the control circuit is not turned on, resulting in inoperability. It could be.

As described above, the conventional operation check limit switch method
Although it has a function to detect the "on" and "off" states of the main contacts of the switch, it does not detect the end of operation of the operating device but has the potential to cause a malfunction. Also, in the auxiliary switch method of the moving accuracy device, if the wipe amount of the auxiliary switch is larger than the wipe amount of the complete contact area of the main contact for the entire stroke of the main contactor, the contact of the auxiliary switch will operate first. There is. Since it is used in high-speed operation, the time required for the main contact to reach the full contact area after the auxiliary switch contact is turned on is very short, and there is very little possibility of stopping during operation, so erroneous display is possible. Although it is considered that there is no property, it can not be said that it accurately detects the "on" state of the main contact,
Further, there is no function to detect the completion of the operation of the operating device and display the same as in the operation confirmation limit switch method. The present invention
An object of the present invention is to provide an operating device having a built-in moving accuracy device capable of detecting the end of the mechanical operation of the operating device.

[Configuration of the invention]

(Means and Actions for Solving the Problems) In order to achieve the above object, according to the present invention, a moving accuracy detecting device for detecting completion of the operation of the natural opening / closing lock device, and an auxiliary device connected to the operating portion of the operating portion of the operating device By combining the switches, it is possible to confirm the operation completion of the operating device.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sequence diagram of a switchgear operating device to which the present invention is applied, and FIG. 2 is a sequence diagram of a switchgear operating device to which the present invention is applied. In FIG. 1, a main shaft 1 is restricted by a notch of a catch 5 which is pressed by a spring 4 to hold a main shaft holding pin 3 protruding from a joint 2 which is interlocked with the main shaft 1. . This state is referred to as the "closed" state of the main contact of the switch. The joint 2 is provided with a main shaft holding pin 6 for holding the "in" state, and the lever 7, which cannot be rotated by the drive spring 35, is provided with catch release pins 8,9. . The micro switches 11 and 12 for detecting whether the catches 5 and 10 are pulled by the spring 4 in the center direction of the main shaft, or are flipped up by the catch release pins 8 and 9 or the main shaft holding pins 3 and 6 are provided. Equipped. The microswitches 11 and 12 are mounted on a plate 13 and have adjustment bolts 14 for fine adjustment.

In Fig. 2, a contact of auxiliary switch that works with the spindle
15 and the microswitch 11 are connected in series, and the b-contact 16 of the auxiliary switch and the microswitch 12 are connected in series. The above-mentioned wiring section shows an "ON" state, and the latter wiring section shows "OFF". A display indicating the state is provided.

Next, the operation of the embodiment of the present invention having the above configuration will be described with reference to FIGS. 1, 2, and 3. FIG. In FIG. 3, reference numeral 17 indicates the rotation range of the lever 7, 18 indicates the full stroke of the main contact, 19, 20, and 21 indicate the state of the main contact, the microswitch 11, and the a contact 15 of the auxiliary switch.

When the operating device starts the "ON" operation, the lever 7 connected to the drive spring rotates clockwise due to the release of the drive spring 35. Catch release pin 8 for "OFF" operation is caught
When the micro switch 11 is pushed up and the micro switch 11 is pressed, the micro switch 11 is turned off as shown at 22. When the rotation of the lever 7 is further advanced, the catch release pin 8 leaves the catch and the micro switch is turned on again. It becomes 23. When the catch release pin 9 reaches the catch 5 and flips it up, the spindle holding pin 3 becomes free, the lever 7 and the joint 2 engage, and the lever 7 and the joint 2 rotate clockwise. The joint 2 and the main shaft 1 are joined by a spline, and the main contact of the switch starts a stroke as the main shaft 1 rotates. When the joint 2 and the spindle 1 further rotate clockwise, the spindle holding pin 6 attached to the joint 2 pushes up the catch 10 and the micro switch 11 is pushed by the catch 10 so that the micro switch 11 such as 24 " It turns off. Main shaft 1 of joint 2
Is further rotated clockwise, the main contact closes and enters the complete contact area 25 of the main contact, and the auxiliary switch connected to the main shaft 1 is in the "on" state of the a contact 15 of the auxiliary switch such as the changeover 26. . When the joint 2 engaged with the lever 7 further rotates clockwise, the main shaft holding pin 6 eventually catches.
And the catch 10 is pulled by the spring 4 and pulled toward the center of the main shaft until it comes into contact with the joint 2. The main shaft holding pin 6 is held by the notch portion of the catch, and the micro switch 11 is like a switch 27. The micro switch 11 is turned on.

By connecting the terminal of the microswitch 11 acting as described above and the terminal of the a-contact of the auxiliary switch in series as shown in FIG. 2, the state of 27 in FIG. It can detect when it is held by the notch. In other words, it is possible to detect when the natural opening / closing lock device, which is the end of the mechanical operation of the operating device, is activated. In addition, in the case of "off" operation as well as "on" operation,
By connecting the micro switch 12 and the b-contact 16 of the auxiliary switch in series as shown in FIG. 2, the operation of the natural open / close lock device can be detected.

The present invention is not limited to the above-described embodiment, but uses a normally open terminal of the micro switch 11 and connects it in parallel with the b contact of the auxiliary switch, and similarly connects the micro switch 12 and the a contact of the auxiliary switch. By doing so, it is possible to construct a system for detecting and displaying the operation of the “ON” and “OFF” operations.

〔The invention's effect〕

As described above, according to the present invention, it is possible to detect the end of the mechanical operation of the operating device, and it is extremely useful for practical use.

[Brief description of the drawings]

FIGS. 1, 2, and 3 are respectively a configuration diagram, a sequence diagram, and a time chart diagram of an operating device according to an embodiment of the present invention, and FIGS. 4 and 6 are diagrams of a conventional operation confirmation limit switch system. FIG. 5 is a block diagram of a conventional moving opening / closing lock device. 1 Spindle 2 Joint 3 6 Spindle retaining pin 4 Spring 5 10 Catch 7 Lever 8 9 Catch release pin 11 12 Micro switch , 13 ... plate 14 ... adjustment bolt 15 ... a contact of auxiliary switch 16 ... b contact of auxiliary switch 25 ... complete contact area of main contact 27 ... "on" of a contact 15 of auxiliary switch State 27: "ON" state of micro switch 11

Claims (1)

(57) [Claims] 1. A rotational force of a motor is transmitted to a spring accumulating lever via a deceleration power transmission mechanism to gradually accumulate a drive spring, and the releasing force of the main spring and a device main body connected to the main shaft of the operating portion. An operating device for rotating the main shaft of the device main body to drive the operating portion of the device main body, a joint fixed to the main shaft on the device main body side and having a pair of main shaft holding pins in the radial direction, and rotating the main shaft holding pin by rotating the main shaft. A catch that fixes it so that it does not rotate in the direction
The catch has a natural open / close lock device including a lever having a catch release pin for releasing the fixation of the spindle holding pin, and is switched to the natural open / close lock device by sliding contact between the catch release pin and the catch. A micro switch is installed, and an auxiliary switch that switches substantially in synchronization with opening and closing of a main contact of the device main body by rotation of the main shaft is connected to a main shaft of the operation unit, and a contact of the auxiliary switch is connected to a contact of the micro switch. And a switch operating device for detecting an operation state based on a combination of the open / closed states of the contacts.