KR100425854B1 - Driving mechanism of disconnector switch - Google Patents

Abstract

The driving mechanism of the gas switchgear disconnector of the present invention generates an accurate and fixed displacement so that even if an external influence such as electromagnetic force, gravity, or vibration occurs during short-circuit on each position (closed-open-ground), an accidental opening and closing operation is performed. Stable three-position switching is achieved to prevent this from happening. In addition, since the dual interlock device is provided, the biggest problem in the prior art does not fundamentally occur, and since the appearance of the mechanism is reduced, a compact configuration is possible.

Description

Driving mechanism of disconnector for gas switchgear {DRIVING MECHANISM OF DISCONNECTOR SWITCH}

The present invention relates to a driving mechanism of a gas switchgear disconnector, and more particularly, to a driving mechanism of a gas switchgear disconnector for interlocking to prevent a malfunction during position switch operation.

In general, a single line diagram of a single bus gas switchboard installed in a building or the like is shown in FIG. 1, and the overall structure of a panel centered on an incoming, a feeding, and a Skelton is shown in FIG. 2.

3 shows the internal structure of FIG. 2, wherein a disconnector such as an A portion is provided on the upper side of the panel, and a mechanism for driving the disconnector is provided on the lower side of the panel.

4 to 6 illustrate the operation of the disconnecting device and the driving mechanism of the conventional disconnector. FIG. 4 is an electrical ON state of the disconnector blade 4-17, and FIG. 5 is an OFF state. 6 shows the operation of the disconnector blade 4-17 according to the operation of the driving mechanism for each of the three positions.

7 and 8 show a conventional driving mechanism, and as shown, two drive shafts 7-1 and 7-2 which are rotated by the rotational movement or manual operation of the motor are installed, and the drive It is possible to rotate the spindle shafts 8-4 and 8-5 through the bevel gears 8-3 on the shafts 7-1 and 7-2, so that the three-position switching displacement It can be obtained from (8-4) (8-5).

Then, the drive class 8-6 is provided, the guide nuts 8-7 and 8-8 are coupled to both ends of the drive class 8-6, and the guide nut 8-7 is provided. (8-8) is screwed onto the spindle shaft (8-4) (8-5), the upper part of the connector drive wing (8-9) and the connector drive lever (8-10) for three-position switching Is connected to the connector rods 8-11 and 8-12, and these links and levers form a basic configuration for driving the three positions of the disconnector switch.

In order to detect the electric signal according to each position as the other functions, as shown in Figure 9, the limit switch (9-14) is installed so that the guide nut (9-13) can detect each position while moving up and down. In addition, for additionally necessary contact signal, when the disconnector drive wing (8-9) is rotated, it is connected to the wire in the pivot shaft (10-15) which rotates together, and can rotate together to receive the electrical signal for each position. The cam switch 10-16 is provided as shown in FIG.

Referring to the operation of the drive mechanism of the gas switchgear disconnector configured as described above, the drive shaft (7-1) (7-2) is driven by a manual and a motor in the disconnection off position as shown in FIG. Rotating the left spindle (8-4) through the bevel gear (8-3), so that the guide nut (8-7) on the left moves vertically upward, and the left side of the driving class (8-6) is on the upper side. When the guide nut (8-7) moving upwards to the limit switch (9-14) as described above is moved to the power supply of the drive motor is cut off the operation stops.

In addition, the driving lash 8-8 moves upward and the disconnector drive wing 8-9 rotates about the pivot shaft 10-15 to counterclock the disconnector drive lever 8-10. Direction, the disconnector blade 4-17 rotates to the ON state by the movement of the drive lever 8-10.

As described above, the electrical interlock device or other necessary auxiliary contact associated with changing the position of the disconnector is connected to the on / off contact of the cam switch 10-16 connected to the pivot shaft 10-15 by wire. Will be used.

On the contrary, the movement from the disconnector off position to the earth position is performed in the same manner as described above, with the guide nut 8-8 on the right moving downwards as the light spindle 8-5 rotates. In the opposite operation described above, the linker and the lever are moved to bring the disconnector blades 6 to 18 into the earth state, and supplying or stopping the driving power of the motor at the predetermined position uses the limit switch in the same manner as described above. Other necessary contacts also use cam switches 10-16 connected to pivot shaft 10-15 as well.

However, the driving mechanism of the conventional gas switchgear disconnector configured as described above should operate only the drive shaft 7-1 in the upper left corner in order to drive the disconnected connector in the disconnected state while the disconnected connector is in the disconnected state. In order to drive in the earth state, only the drive shaft 7-2 on the lower right side needs to be operated. In some cases, when the operation sequence is changed by the operator's judgment and error, that is, the drive shaft 7 on the lower right side in the disconnected state. -2) or when the drive shaft 7-1 on the upper left side in the earth state is operated, as shown in FIG. 11, the insulation distance is not secured even in the disconnection state as shown in FIG. there was. Therefore, the misoperation is prevented by the description of the various operation methods and the electrical control, but there is a problem that the fundamental misoperation is still prevented when the manual operation is performed without the electric drive.

In addition, the conventional driving mechanism occupies a top volume despite its external dimensions (height × width × length) of 310 mm × 500 mm × 700 mm, which is part of the entire gas switchboard. There was a problem that caused the rise.

The object of the present invention devised in view of the above problems is to add an additional safety device with an interlock function so that a user's misoperation does not occur fundamentally to prevent an accident that may be caused by a malfunction. In addition, the present invention provides a driving mechanism of a gas switchgear disconnector suitable for compacting the external size of the mechanism itself.

1 is a circuit diagram showing a typical gas switchboard single line diagram.

Figure 2 is a side view and a longitudinal sectional view showing the overall configuration of a conventional gas switchboard.

Figure 3 is an internal structure diagram of a conventional gas switchboard.

Figure 4 is an on-state cross-sectional view of a conventional disconnector.

5 is a cross-sectional view of an off state of a conventional disconnector.

6 is an earth state cross-sectional view of a conventional disconnector.

7 is a perspective view of a conventional drive mechanism.

8 is an internal link connection diagram of a conventional driving mechanism.

9 is an enlarged view of a portion C of FIG. 7;

10 is an enlarged view of a portion D of FIG. 7;

11 is a state diagram of a disconnector blade during misoperation of a conventional mechanism.

Figure 12 is a perspective view showing one side of the driving mechanism of the gas switchgear disconnector according to the present invention.

13 is another perspective view of FIG. 12.

14 is a front view of FIG. 12.

15 is a cross-sectional view of FIG. 12.

16 is a side view of FIG. 12.

17 is a cross-sectional view of an on-state of a disconnector for a gas distribution panel of the present invention.

18 is a cross-sectional view of an off state of a disconnector for a gas distribution panel of the present invention.

Figure 19 is an earth state cross-sectional view of the disconnector for the gas switchgear of the present invention.

20 is a front view of the driving mechanism in the on state of the disconnector according to the present invention.

Figure 21 is a front view of the drive mechanism in the earth state of the disconnector according to the present invention.

Explanation of symbols on the main parts of the drawings

12-20, 12-21: Motor 12-35: Pin

12-36: Cam Plate 12-37: Interlock Plate

14-40,14-41: Front plate 15-22: DS spindle shaft

15-23: YES spindle shaft 15-25: guide nut

15-26: Driving class 15-27: Connect rod

15-28: Triangular lever 15-29: Adjust link

In order to achieve the object of the present invention as described above

Hereinafter, with reference to the embodiment of the accompanying drawings the driving mechanism of the present invention gas switchgear disconnector configured as described above in detail as follows.

12 and 13, the overall configuration of the disconnector driving mechanism according to the present invention is viewed from another angle, FIG. 14 is a front view, FIG. 15 is a sectional view in a disconnected state, and FIG. 16 is FIG. The side view seen from the opposite side of 15 is shown.

Referring to each component, first, as shown in FIG. 12, two motors 12-20 and 12-21 are connected to the DS spindle shaft 15-22 and the YES spindle shaft 15-23 in FIG. It is connected and driven by roller chain and sprocket (15-24)

In addition, two guide nuts 15-25 are screwed to two spindle shafts 15-22 and 15-23 rotatably installed in a horizontal direction with a predetermined height difference, and the guide nuts 15- 25, both ends of the driving class 15-26 are coupled.

In addition, the center of the driving class (15-26) is connected to one end of the connecting rod (15-27), the other end is connected to the lower end of the triangular lever (15-28), the triangular The upper end of the lever 15-28 is connected to the lower end of the adjust link 15-29.

The upper end of the adjust link 15-29 is connected to the disconnector drive lever 12-30 as shown in FIG. 12, and the center of the drive link 12-30 is displayed as shown in FIG. 17. It is fixed to the connector shaft 17-31, and can operate the connector blade 17-32 like FIG. 17, FIG. 18, and FIG.

Here, the present invention as shown in Figure 13 through the switch lever 16-33 to the cam switch 16-32 that can receive the electrical contact signal as shown in Figure 16 to achieve a compact outer size and stable interlock It can be easily assembled and disassembled in the guide nut 13-34, and the cam switch 16-32 is formed on the opposite side of the guide nut 13-34 in the longitudinal direction at the center of the driving class 15-26 as shown in FIG. The pins 12-35 are coupled to the coupling holes, and the rear ends of the pins 12-35 are inserted into the S-shaped slots of the cam plates 12-36 so that the cam plates 12-36 are positioned on the upper side of the cam holes 12-36. It is made to be able to move.

The interlock plates 12-37 are connected to the end portions of the cam plates 12-36 as shown in FIG. 12, so that the cam plates 12-36 can be moved up and down together. -38) (14-39) are installed at the top and bottom of the front plate (14-40) (14-41) to operate the power can be cut off when the manual operation rather than motor drive.

In the present invention configured as described above, the operation from the disconnected connector to the disconnected on state will be described first.

As shown in FIG. 15, when the front plate 14-40 is moved to the right side to drive the DS spindle shaft 15-22, the contact point of the limit switch 14-38 is broken to cut off the power applied to the motor. When the handle for the operation becomes available, the front plate 14-40 is moved to the left side, and the contact of the limit switch 14-38 is connected to enable the power supply of the motor. Manual operation is impossible because it becomes a blocked state, the drive by the power supply is made by connecting to the motor by the roller chain and the sprocket (15-24).

Then, when the upper spindle spindle 15-22 is rotated by manual or motor driven, the guide nut 15-25 screwed to the spindle spindle 15-22 is moved in the horizontal direction. The upper end of the driving lash 15-26 is also moved at the same time. At this time, when the guide nut moving forward is in contact with the limit switch 13-42, the power of the driving motor is cut off, and thus the operation is stopped. When the operation of the guide nut 15-25 is stopped, the position of the disconnector is in the disconnector on state as shown in FIG. 17.

In addition, in the driving mechanism, with the movement of the guide nut 15-25, the interlock plate 12-37 descends with the lowering of the cam plate 12-36 as shown in FIG. The interlock is made such that manual operation of the spindle shafts 15-23 is not possible.

As described above, in the present invention, when the two spindle shafts are driven using the locking function, the operation of the spindle spindle in the disconnected connector state is impossible, and the disconnected connector on in the disconnected state. It can be operated in any position of the state or the earth state, and since the interlock is made so that the operation of the DS spindle shaft 15-22 is impossible in the earth state, the malfunction is essentially blocked by the user's misoperation.

In the conventional driving mechanism, the cam switch 10-16 is connected to the pivot shaft 10-45 which rotates the electrical contact associated with the change of the position of the connector as shown in FIG. In the present invention, as shown in Figure 16, after the fastening to the guide nut (16-44) through the switch lever (16-33) to the cam switch (16-32) that can receive the electrical contact signal, the guide nut (16-44) In addition to the movement of), it is able to stably rotate by 90 ° to give an electric signal according to the position.

In the case of driving in the earth state from the disconnected connector off state, manual operation is impossible by the front plate 14-40 during the electric drive using the motor, and in the case of manual operation, the power applied to the motor is cut off. In the mechanism configured to drive the spindle spindle 15-23 manually or electrically, the guide nut 15-25 moves horizontally as shown in FIG. 19 via the lever and links while performing the horizontal reciprocating motion. The interlock plate 12-37, which is connected to the guide nut 15-25, automatically forms the manual operation of the DS spindle shaft 15-22 in the earth state in order to prevent the malfunction of the user. The upward movement will make this impossible.

At the same time, the configuration of the cam switch for obtaining the electrical signal, which is difficult to assemble in the conventional driving mechanism and occupies time and space, is easily assembled to the guide nut 15-25, thereby operating stably. Up to now, the operation from the disconnected connector off state to the disconnected connector on state or the earth state has been described. When driving in reverse, only the operation sequence and direction described above are operated in reverse.

As described in detail above, the driving mechanism of the gas switchgear disconnector of the present invention generates an accurate and fixed displacement so that external influences such as electromagnetic force, gravity, or vibration generated at each position (closed-open-ground) are generated. Even if the three-position switching is made to prevent accidental opening and closing operation.

In addition, since the dual interlock device is provided, the biggest problem in the prior art does not fundamentally occur, and since the appearance of the mechanism is reduced, a compact configuration is possible.

Claims (2)

In the drive mechanism of the gas switchgear disconnector, Upper and lower drive motors, DS spindle shaft is installed in the horizontal direction so that the forward and reverse rotation by the motor of the upper, Is spindle shaft is installed in the horizontal direction in the lower portion of the DS spindle shaft and rotated forward and backward by the motor of the lower, A guide nut which is screwed to the DS / SS spindle shaft and moves horizontally in the horizontal direction according to the forward and reverse rotation, A driving class which is connected to the upper and lower ends of the guide nut and whose end is moved left and right according to the left and right movement of the guide nut, One end is connected to the center of the driving class, and the connecting rod moves at the same time according to the left and right movement of the driving class, The triangular lever is connected to the other end of the connecting rod and the upper end is connected to the adjust link, and rotates around the fixing pin according to the left and right movement of the connecting rod. The driving mechanism of the disconnecting device for a gas switchgear, comprising an interlock mechanism coupled to the driving lash so as to block the erroneous operation during manual operation of the mechanism. The method of claim 1, wherein the interlock mechanism is a pin connected to one end of the coupling hole formed in the longitudinal direction in the central portion of the driving class; A cam plate having the other end of the pin coupled to an S-shaped slot and installed to be movable in an upward and downward direction according to the left and right movement of the pin; A driving mechanism of the gas switchgear disconnector, which is connected to one end of the cam plate and moved simultaneously with the up and down movement of the cam plate to intercept one of the insertion openings of the upper and lower front plates. .