JPS6242444B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a movement operating device for a drawer-type switchgear, and particularly to a movement operation device for a drawer-type switchgear housed in a housing between a disconnection position and a connection position by operating a handle outside the housing. The present invention relates to a moving operation device for a drawer-type opening/closing device.

Conventionally, main circuit terminals are housed in a housing such as a switchboard that has main circuit terminals inside, and the main circuit terminals can be freely connected to and disconnected from the main circuit terminals of the housing, as well as vacuum switches that can freely open and close the main circuit. A drawer-type switchgear equipped with a switch and an interlock mechanism that can be fixed to the housing at the connection position and disconnection position of both main circuit terminals is moved between the connection position and disconnection position of both main circuit terminals. The mobile operation device to be operated is a rotary device in which a rotary disk that is rotated by an external handle operation, a locking guide provided on the drawer-type opening/closing device, and a drive lever that can be freely engaged and detached are installed inside the housing. In addition to incorporating a freely movable shaft, a rod connecting part protruding from the rotating disc and a connecting lever implanted in the shaft are connected to the connecting rod so that the drawer type opening/closing device can be moved by the rotation of the rotating disc. It is equipped with a moving mechanism that is connected to each other.

To move the drawer type opening/closing device within the housing by the moving mechanism of the moving operation device, first move the drawer type opening/closing device to the disconnected position so that the drive lever of the moving mechanism is engaged with the locking guide. After that, the interlock mechanism of the drawer type switchgear is unlocked, and the rotating disc is rotated in the appropriate direction via the operation handle to move the drawer type switchgear to the connected position. is carried out, and movement to the disconnection position is effected by unlocking the interlock mechanism and rotating the rotating disk in the opposite direction.

However, in the conventional moving operation device, when the drawer-type switchgear is carried into the disconnection position from outside the casing while the rotating disk of the moving mechanism is in a state other than the state where the disconnection operation is completed, the locking guide of the drawer-type switchgear is If the interlock mechanism is not properly engaged with the drive lever of the moving mechanism, or if the drawer-type opening/closing device is in the disconnected or connected position, the interlock mechanism cannot be unlocked outside the housing. There are problems such as damage to the lock mechanism.

The present invention has been made to solve the above-mentioned problems, and one embodiment of the present invention will be described in detail below with reference to the drawings.

1 and 2 are a schematic front view and a schematic plan view of a drawer-type switchgear 2 equipped with a moving operation device 1 according to the present invention, and the drawer-type switchgear 2 is inserted into a frame 3 insulated. Main circuit terminals 4, 4,
The main circuit terminals 4, 4, 4, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, or, etc,, etc., The main circuit terminals 8, 8,... are housed so as to be movable in the direction of advancing and retracting (in the vertical direction in Fig. 2) relative to the main circuit terminals 4, and can be freely connected to and disconnected from the main circuit terminals 4, and open/close the main circuit. Switches 9, 9, such as flexible vacuum switches...
It is equipped with The drawer-type opening/closing device 2 is attached to the interlock plate 10 which is attached to the bottom of the casing 6 and has a sloped portion at least at the end of the door 5, and the drawer-type opening/closing device 2 while being elastically biased downward at all times. An interlock mechanism 12 consisting of an interlock pin 11 is provided so that both main circuit terminals 4 and 8 can be fixed to the housing 6 in a connected position (connected position) and a disconnected position (disconnected position). There is.

Note that unlocking the interlock mechanism 12,
That is, the interlock pin 11 is removed from the lock hole 10a for the disconnection position and the connection position of the interlock plate 10 through the first and second lock mechanisms, as will be described later. The interlock mechanism 12 is unlocked by lifting the handle 14 attached to the interlock pin 11, and the movable iron piece 16a of the operating electromagnetic piece 15 that opens and closes the switch 9 is released. , so that the switch 9 can be opened only when it is separated from the fixed iron piece 16b.

As shown in FIGS. 1 and 2, the mobile operating device 1 is located on the side (the left side in each implementation) and the front (in FIG. A state in which the movement mechanism 17 that moves the drawer type switchgear 2 between the disconnection position and the connection position and the movement mechanism 17 that moves the drawer type switchgear 2 to the connection position have completed their operations. A first locking mechanism that enables the moving mechanism 17 to be locked in a state in which the operation of the moving mechanism 17 for moving the drawer-type opening/closing device 2 to the disconnecting position is completed (in a state in which the connecting operation is completed) and in a state in which the operation of the moving mechanism 17 for moving the drawer type opening/closing device 2 to the disconnecting position is completed (in a state in which the disconnecting operation is completed) 18, the interlock mechanism 12 is unlocked in conjunction with the unlocking of the first lock mechanism 18, and the drawer type opening/closing device 2 is removed from the housing 6.
When moving from the outside to the disconnection position, the drawer type switchgear can be moved to the disconnection position only when the moving mechanism 17 has completed the disconnection operation and the switch 9 of the drawer type switchgear 2 is in the open state. The second lock mechanism 19, etc.

That is, in the vicinity of the door 5 in the housing 6, a U-shaped frame 20 is erected on the side of the movement path of the drawer-type opening/closing device 2.
As shown in FIG. 3, FIG. 4, FIG. 5, and FIG. It is rotatably provided. A first locking mechanism 18 is provided on the outer periphery of the rotary disk 21 when the rotary disk 21 is rotated to a disconnection operation completion state and a connection operation completion state by an operation handle to be described later.
A semi-circular disconnection position engaging portion 21a and a connection position engaging portion 21b with which the locking rollers are engaged are provided 1/8 of a circle apart in the circumferential direction. The depth of the connection position engaging portion 21b is determined by the movement range of the interlock pin 11 of the interlock mechanism 12 which is removed from the interlock plate 10 via the first and second lock mechanisms 18 and 19, as will be described later. In order to keep the distance constant and to vary the height of the end of the guide member in the second locking mechanism 19, the guide member is provided to be appropriately larger than the disconnection position engaging portion 21a.

A connecting plate 23 is integrally attached to the rotating disk 21 and has a rod connecting part 23a extending upward in FIG. 3 and a handle engaging part 23b projecting leftward. One end of a connecting rod 24 extending in the same direction as the moving direction of the drawer type opening/closing device 2 is pivotally attached to the rod connecting portion 23a via a pin 25.
4 has a connecting lever 27 implanted in the shaft 26.
It is pivoted to. The shaft 26 is rotatably suspended horizontally on the frame 3 that supports the main circuit terminal 4.
In addition, drive levers 28 installed near both ends are connected to the rear portions of the drawer-type opening/closing device 2 on both sides (upper left and right in the second case) via guide rollers 29 attached to the ends.
It is provided so that it can be freely connected to the drawer-type opening/closing device 2 by engaging and disengaging a fork-shaped locking guide 30 attached to the.

The engagement and disengagement between the guide roller 29 and the locking guide 30 is performed when the drawer type opening/closing device 2 is located at the disconnected position as shown in FIG.

The handle engaging portion 23b of the connecting plate 23 includes:
An operation handle 31 made of a pipe material is provided so as to be able to be fitted and removed via a flat fitting part 31a formed at one end. The operating handle 31 is used to rotate the rotary disk 21 and the connecting plate 23 in order to reciprocate the drawer-type opening/closing device 2 between the disconnection position and the connection position, and is provided through the handle insertion hole of the door 5. (not shown) and a handle insertion hole 20a of the frame 20 is provided so as to be freely inserted, and the fitting portion 3
1a, as shown in FIGS. 7 and 8, there is a stopper hole 32 penetrating in a direction perpendicular to the longitudinal direction.
is provided, and the stopper hole 3 of the fitting part 31a
2, one end of a stopper 33 is detachably provided. The stopper 33 constitutes a part of a retaining prevention mechanism that prevents the operation handle 31 from deviating from the connecting plate 23 between the disconnecting operation completed state (see FIG. 3) and the connecting operation completed state of the connecting plate 23, etc. The stopper 33 is attached to the end of a leaf spring 34 attached to the rotary disk 21 in order to always urge the stopper 33 in a direction away from the stopper hole 32. The other end of the stopper 33 is connected to a plate cam 35 which extends in the vertical direction and is attached to the inside of the frame 20.
It is provided so that it can freely come into contact with the cam surface of.

Note that the plate cam 35 moves the stopper 33 to the plate spring 3 in the disconnecting operation completed state and the connecting operation completed state.
4, the stopper 3 is removed from the stopper hole 32, and the stopper 3 is removed between the two operation completion states.
3 is fitted into the stopper hole 32 against the leaf spring 34, and is provided in the shape of a rectangular plate with triangular notches at the top and bottom of the inner side. Also, the third
36 in Figures 4, 5 and 6.
a, 36b are brought into contact with both ends (left and right sides in FIG. 3) of the rod connecting portion 23a of the connecting plate 23, thereby moving the rotary disk 21 etc. between the disconnecting operation completed state and the connecting operation completed state. These bolt-like stoppers restrict the rotation range to 45 degrees, and are installed on support shafts 37a and 37b that are horizontally suspended from the frame 20 at an appropriate distance, so that the amount of protrusion can be adjusted.

Near the upper end of the frame 20, the other end (third
A lock lever 39, which has a stopper 38 implanted at its end that can freely come into contact with the right side in the figure, is fixed at its base to a rotating shaft 40 that is rotatably suspended horizontally on the frame 20 in close proximity to one of the support shafts 37a. It is arranged so that it can swing freely. The stopper 38 and the lock lever 39 constitute part of an opening lock mechanism that locks the operation of the moving mechanism 17 when the door 5 of the housing 6 is opened.
When the lock lever 39 is rotated clockwise around the rotation shaft 40 in the clockwise direction in FIG. A return rod 41 that can come into contact with the inner surface of the door 5 is implanted at the end of the door 5. As shown in FIG. 3, the base of a door lever 42 is fixed to the end of the rotating shaft 40 protruding from the frame 20, and is arranged in a dogleg shape with respect to the lock lever 39. A roller 43 that rolls in contact with the inner surface of the door 5 is rotatably attached to the end of the door 5 .

Note that the lock lever 3 centered on the rotation axis 40
9. The rotation moment of the stopper 38 and the return rod 41 is set to be larger than that of the door lever 42 and the roller 43. In addition, the return rod 41 automatically returns the unlocking mechanism, which is unlocked as necessary when the door 5 is opened, to its original position when the door 5 is closed, that is, the roller 43 of the door lever 42 locks the door 5. Its length is such that when the end comes into contact with the inner surface of the door 5 when the door is closed, the lock lever 39 generates a clockwise rotation moment in FIG. 3. It is provided to such an extent that this occurs.

A door lock pin 4 is provided at the lower end of the connecting plate 23.
4 have been planted. The door lock pin 44 constitutes a part of the door lock mechanism that restricts the opening of the door 5 only when the drawer type opening/closing device 2 is located at the connection position, and it loosely penetrates the rectangular window 20b provided in the frame 20. However, the end portion protrudes from the frame 20. As shown in FIG. 2, on the inner surface of the door 5, there is a crank-shaped door metal fitting 45 that together with the door lock pin 44 constitutes a door lock mechanism.
is installed. The mounting position of the door fitting 45 is such that the end of the door lock pin 44 is between the inner surface of the door 5 and the end of the door fitting 45 when the connecting plate 23 etc. are rotated to the position where the connection operation is completed. It is provided so as to be interposed between the two.

Inside the frame 20, on the right side in FIG. 3, a T-shaped lever 46 made of a pair of plates is housed with its central portion supported by a shaft 47 that is rotatably supported horizontally on the frame 20. T-shaped lever 46
constitutes a part of the first locking mechanism 18 that locks the moving mechanism 17 in its disconnection operation completed state and connection operation completed state, and the upper arm portion 46
A rotary roller 48 is rotatably attached to the rotary disk 21 and is detachable from the disconnection position engaging portion 21a and the connected position engaging portion 21b of the rotary disk 21. Also,
One end of a horizontally extending lock release rod 49 is pivotally attached to the lower arm 46b of the T-shaped lever 46, and this lock release rod 49 is attached to the frame 20.
and the door 5 in a movable manner.
A release cap 50 is attached to the other end protruding from the top. The T-shaped lever 46 is connected to the frame 20.
Spring receiver 51 and lock release rod 49 fixed to
A return spring 52, such as a compression coil spring, which is elastically loaded between the spring receiving portion 49a provided in It is rotationally biased.

A guide member 53 extending parallel to the connecting rod 24 is pivotally attached to the central arm portion 46c of the T-shaped lever 46 in the first locking mechanism 18 via an end bent at a substantially right angle. The guide member 53 is
It constitutes the second lock mechanism 19 in conjunction with a swing lever to be described later, and its end portions are connected to a rectangular window 20c provided in the frame 20 and the frame 3.
The base is loosely fitted into a similar window (not shown) provided in the frame 3, and the base is pivotally supported on the frame 3 via a pin 54 (see FIG. 2).

The guide member 53 is made of a pipe material, and has a flat base and an end bent at a substantially right angle with a relatively large radius of curvature. The T-shaped lever 46 and its roller 48 are connected to the rotating disc 21.
It is provided so that it becomes horizontal when it is rotated as if rolling on the circumferential surface of the cylinder.

As shown in FIGS. 1 and 2, in a portion of the guide member 53 parallel to the connecting rod 24, there is a swinging lever whose intermediate portion is pivoted to the front portion of the drawer type opening/closing device 2 via a pivot shaft 55. 56 is provided so as to be freely engageable and detachable via a rectangular engaging portion 56a formed at one end. The swing lever 56 is always engaged with the implant pin 13 implanted in the interlock pin 11 via a V-shaped engagement portion 56b formed at the other end.

The swing lever 56 is provided so as to be horizontal when the interlock mechanism 12 is unlocked, that is, when the lower end of the interlock pin 11 is in sliding contact with the upper surface of the interlock plate 10. . Further, when the drawer type opening/closing device 2 is moved from outside the housing 6 to the disconnection position, the engagement between the guide member 53 and the engaging portion 56a at one end of the swinging lever 56 is controlled by the locking roller 48 of the first locking mechanism 18. is engaged with the disconnection position engaging portion 21a of the rotating disk 21 of the moving mechanism 17, and when the lower end of the interlock pin 11 of the interlock mechanism 12 is located below the upper surface of the interlock plate 10,
That is, it is provided so that this is done only before the lower end of the interlock pin 11 comes into contact with the inclined surface of the interlock plate 10.

The operation when the drawer type switchgear 2 is carried into the disconnection position from outside the housing 6 with the above configuration and is moved between the disconnection position and the connection position will be explained.

First, open the door 5 of the housing 6, and then open the operation handle 3.
1, the rotating disk 21 and the connecting plate 23 are brought into a state where the disconnection operation is completed as shown in FIG. be brought inside. Before the drawer-type switchgear 2 carried into the housing 6 is moved to the disconnection position as shown in FIG.
The swing lever 5 in the interlock mechanism 19 of
As the engaging portion 56a at one end of the guide member 53 starts to engage with the end of the guide member 53, the interlock mechanism 12
The drawer-type opening/closing device 2 is moved to the disconnection position while the lower end of the interlock pin 11 contacts the sloped surface of the interlock plate 10. When the switch 9 of the drawer type switchgear 2 is in the open state, in other words, when the movable iron piece 16a of the operating electromagnet 15 is separated from the fixed iron piece 16b, the interlock pin 11 can move upward. By this,
Interlock plate 10 of interlock pin 11
In other words, the drawer-type opening/closing device 2 can be moved upward along the slope of the opening/closing device 2, and the interlock pin 11 can be inserted into the lock hole 10a for the disconnection position of the interlock plate 10, so that the drawer-type opening/closing device 2 can be moved up. The opening/closing device 2 has been carried into the disconnected position, and preparations for engagement between the guide roller 29 of the moving mechanism 17 and the locking guide 30 of the drawer type opening/closing device 2 are completed.

In addition, when carrying the above-mentioned drawer type switchgear 2 from outside the housing 6 to the disconnection position, when the switch 9 is in the closed state, the upward movement of the interlock pin 11 is caused by the movable iron piece 16a of the operating electromagnet 15. When the moving mechanism 17 is in a state other than the disconnecting operation completed state, it is interlocked with the T-shaped lever 46 of the first locking mechanism 18. The height position of the end of the guide member 53 of the connected second lock mechanism 19 is
Since the height position of the end of the guide member 53 is different from the state in which the disconnection operation is completed, the second lock mechanism 18
The engagement between the end of the guide member 53 and the engaging portion 56a at one end of the swing lever 56 is prevented, thereby locking the movement of the drawer-type opening/closing device 2.

After carrying the drawer-type opening/closing device 2 to the disconnection position as described above, the door 5 is closed, and the operating handle 31 is inserted through the handle insertion hole and the handle insertion hole 20a of the frame 20, and the fitting portion 31a is connected. It fits into the handle engaging portion 23b of the plate 23. Then, the release cap 50 of the first lock mechanism 18 is pulled against the return spring 52, and the lock roller 48 is disengaged from the disconnection position engagement portion 21a of the rotary disk 21, and at the same time, the second lock mechanism The interlock pin 11 of the interlock mechanism 12 is removed from the disconnection position lock hole 10a of the interlock plate 10 via the guide member 53 and the swing lever 56 at 19, and the first lock mechanism 18 and the interlock mechanism 12 are locked. At the same time, the operation handle 31 is lifted up to rotate the rotating disk 21 and the like of the moving mechanism 17 in the clockwise direction in FIG. 3 about the shaft 22. By operating this handle, the drive lever 28 of the moving mechanism 17 equipped with a guide roller 29 that rolls and engages with the locking guide 30 of the drawer type opening/closing device 2 moves upward in FIG. 2 about the shaft 26. The drawer-type opening/closing device 2 is rotated and the guide rail 3
a, and the other end of the rod connecting portion 23a of the connecting plate 23 comes into contact with the stopper 36b in the other direction, thereby moving the drawer type opening/closing device 2 to the connecting position. That is, the main circuit terminal 8 and the main circuit terminal 4 inside the housing 6
At the same time, the interlock mechanism 12 locks the housing 6 of the drawer type opening/closing device 2, and the first lock mechanism 18 locks the moving mechanism 1.
7 and the door 5 is locked by the door lock mechanism. Furthermore, when the drawer type opening/closing device 2 is moved from the connected position to the disconnected position, the moving mechanism 17 and the interlock mechanism 12 are simultaneously unlocked by pulling the release cap 50 in the first locking mechanism 18. This is done by pushing down the operating handle 31, contrary to the case described above.

In the opening lock mechanism, when the door 5 is opened, the lock lever 39 is supported by one support shaft 37a and the stopper 3 is supported as shown in FIG.
8 is in contact with the other end of the rod connecting portion 23a of the connecting plate 23, thereby locking the operation of the moving mechanism 17, or when the lock lever 39 is placed against the frame 20 as shown in FIG. 9 for inspection, testing, etc. Although the movement mechanism 17 is in an unlocked state, as the door 5 is closed, in the former case, the roller 4 attached to the end of the door lever 42
3 contacts and rolls on the inner surface of the door 5, the door lever 42 and the lock lever 39 rotate counterclockwise around the rotation shaft 40 in FIGS. 3 and 9, and at one point in FIG. As shown by the chain line, the locking mechanism is unlocked when the roller 43 is in contact with the inner surface of the door 5. In the latter case, the end of the return rod 41 is in contact with the inner surface of the door 5.
The door lever 42 etc. are rotated clockwise while contacting the inner surface of the lock lever 39.
9, the weight of the lock lever 39 becomes greater than that of the door lever 42, and the lock lever 39 is rapidly rotated clockwise, as shown by the dashed line in FIG.
The lock mechanism is unlocked when the door is opened with the roller 43 in contact with the inner surface of the door 5.

Further, while the drawer-type switchgear 2 is moving between the disconnection position and the connection position, the lower end of the interlock pin 11 in the interlock mechanism 12 is in sliding contact with the upper surface of the interlock plate 10, and the first The locking roller 48 of the T-shaped lever 46 in the locking mechanism 18 rolls in contact with the outer circumferential surface of the rotary disk 21, and the stopper 33 of the locking prevention mechanism is moved against the stopper of the operating handle 31 by the action of the plate cam 35. By being fitted into the hole 32, the operation handle 31 is prevented from coming off the connection plate 23.

As described above, the present invention is housed in a housing having a door and containing a main circuit terminal, and includes a main circuit terminal that can be freely connected to and disconnected from the main circuit terminal, and a switch that can freely open and close the main circuit. In addition, the drawer-type switchgear is equipped with an interlock mechanism that can be fixed to the housing at the connection and disconnection positions of both main circuit terminals.
In a moving operation device for a drawer-type opening/closing device, the moving mechanism is provided to be movable between the connecting position and the disconnecting position by a moving mechanism that can be operated from the outside of the casing, and the moving mechanism is moved between the connecting operation completed state and the disconnecting operation. A first locking mechanism that can be locked in the completed state and unlocked by an external operation is provided, and the interlock mechanism is unlocked in conjunction with the unlocking of the first locking mechanism, and the moving mechanism is Since the device is equipped with a second lock mechanism that allows the drawer-type switchgear to be moved from outside the housing to the disconnection position only when the disconnection operation is completed and the switch is in the open state, When the drawer-type switchgear is brought into the disconnection position, it is possible to always ensure good coupling with the moving mechanism, and the open/closed state of the switch can be confirmed by external operation. Therefore, damage to the moving mechanism etc. is not caused, and it is possible to prevent erroneous operations such as moving the drawer-type switching device while the switch is closed.

[Brief explanation of the drawing]

1 and 2 are a schematic front view and a schematic plan view of a drawer-type opening/closing device equipped with a moving operation device according to the present invention, and FIGS. 3, 4, 5, and 6 are respectively according to the present invention. A side view of the mobile operating device according to
Front view, top view, and rear view; FIG. 7 is an explanatory enlarged sectional view taken along the line - in FIG. 6; FIG. 8 is an explanatory sectional view taken along the line - in FIG. 7; FIG. FIG. 2...Drawer type switchgear, 4...Main circuit terminal, 5
...Door, 6...Casing, 8...Main circuit terminal, 9...
Switch, 12... Interlock mechanism, 17...
Moving mechanism, 18... First locking mechanism, 19...
Second locking mechanism.

Claims (1)

[Claims] 1 It is housed in a housing that has a door and has a main circuit terminal inside, and is equipped with a main circuit terminal that can be freely connected to and disconnected from the main circuit terminal, and a switch that can freely open and close the main circuit. A drawer-type opening/closing device equipped with an interlock mechanism that can be fixed to the casing at the connection position and the disconnection position is provided so as to be movable between the connection position and the disconnection position by a movement mechanism that can be operated from the outside of the casing. A moving operation device for a drawer-type opening/closing device comprising: a first locking mechanism that enables the moving mechanism to be locked in a state in which the connecting operation is completed and a state in which the disconnecting operation is completed, and is unlockable by an external operation; The interlock mechanism is unlocked in conjunction with the unlocking of the lock mechanism 1, and the disconnection is disconnected from outside the casing of the drawer-type switchgear only when the moving mechanism has completed the disconnection operation and the switch is in the open state. 1. A moving operating device for a drawer-type opening/closing device, characterized in that it is provided with a second locking mechanism that allows movement to a certain position.