JP2020129452A - Disconnector stopper - Google Patents

Abstract

To provide a disconnector stopper capable of efficiently performing a mechanical locking work for a disconnector by facilitating to insert a locking pin of a mechanical locking mechanism, in a mechanical locking mechanism of a disconnector.SOLUTION: When a mechanical locking mechanism of a disconnector is locked or unlocked, a disconnector stopper 10 is disposed at a position facing a handle 22, and a shaft hole 21 is fitted to a pin insertion hole 32 while the disconnector stopper 10 is in contact with the handle 22. Thus, a locking pin 40 insertion work can be performed easily.SELECTED DRAWING: Figure 1

Description

The present invention relates to a disconnector stopper arranged in a mechanical lock mechanism of a disconnector that maintains a locked state or an unlocked state by inserting a lock pin.

The substation is equipped with a disconnector for disconnecting main equipment such as a transformer and a circuit breaker from the power transmission line. A disconnector is a switchgear used to open and close a charged electrical circuit for the purpose of disconnecting it from a power source for inspection and repair of electrical equipment. In a substation, when performing a periodic inspection, the inspection work is performed by disconnecting the inspection device from the power transmission line by a disconnector to put it in a power failure state. Specifically, for inspection work, take measures such as disconnecting the load current with a circuit breaker or an additional switch, opening the disconnecting switch, confirming no voltage with a voltage detector and grounding, and further attaching a display board during inspection. Then the work is done.

In general, such a disconnector is equipped with a mechanical lock mechanism that mechanically fixes the rotation of the operating rod in order to ensure work safety. This is to mechanically fix the switchgear of the disconnector so that the disconnector will not be accidentally moved and charged.

For a mechanical lock mechanism that mechanically fixes the rotation of the operating rod, a handle extending substantially orthogonal to the axis of the operating rod is rotated to rotate or lock the operating rod around the axis to lock or unlock the operating rod. There is a type of disconnector in which the locked state or the unlocked state is maintained by inserting the lock pin by aligning the pin insertion hole formed in the shaft support with the pin insertion hole formed in the shaft support.

Japanese Patent No. 3811934

When operating the mechanical lock mechanism of the disconnector of this type, rotate the handle until it hits the installation base when it is in the locked or unlocked state, and The shaft center of the pin insertion hole provided in the bearing portion is displaced, and the lock pin cannot be inserted. When inserting the lock pin from this state, you have to lift the handle a little with one hand, align the insertion hole of the operation rod with the insertion hole of the bearing, and insert the lock pin with the other hand. It was troublesome. There are many disconnectors at the substation, and it took time to insert the lock pin for each disconnector, which required a series of inspection work.

Therefore, an object of the present invention is to provide a disconnector stopper that allows a lock pin to be easily inserted.

In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that the operating rod is provided with a first pin insertion hole penetrating substantially perpendicularly to the axis line, and the first supporting member for axially supporting the operating rod is provided with a first pin insertion hole. Two pin insertion holes are provided, and a handle extending substantially orthogonal to the axis of the operation rod is rotated to rotate or lock the operation rod around the axis to lock or unlock the operation rod. A disconnector stopper arranged in a mechanical lock mechanism of a disconnector, which is maintained in a locked state or an unlocked state by inserting a lock pin in alignment with the second pin insertion hole, the lock or A shape that is arranged so as to face the handle when unlocked, and that the lock pin can be inserted with the first pin insertion hole and the second pin insertion hole aligned with each other when the handle is in contact. It is formed in.

A second aspect of the present invention is characterized in that the disconnector stopper according to the first aspect is detachable from the disconnector.

The invention according to claim 3 is characterized in that the dimension of the disconnector stopper according to claim 1 or 2 in the direction in which the handle comes into contact is adjustable.

According to the invention described in claim 1, by disposing the disconnector stopper so as to face the handle of the operation rod, the handle is rotated to the lock position or the unlocked position, and the handle contacts the disconnector stopper. Then, since the first pin insertion hole of the operation rod and the second pin insertion hole of the bearing portion are aligned with each other, the lock pin can be easily inserted.

In this way, lifting the handle a little with one hand, aligning the insertion hole of the operating rod with the insertion hole of the bearing and inserting the lock pin with the other hand eliminates the need to improve work efficiency. The inspection work time can be shortened. Since both hands are not blocked when the lock pin is inserted, it is possible to ensure work safety.

According to the invention described in claim 2, it can be arranged when the operation is required and can be removed when the work is completed, and it is not necessary to prepare a disconnector stopper for all the disconnectors, and the cost can be reduced. Is possible. Further, by removing the disconnector stopper after use, the disconnector stopper does not interfere with other work.

According to the third aspect of the present invention, the size with respect to the direction in which the handle abuts can be adjusted, so that different disconnectors can be accommodated, and by fine adjustment, the first insertion hole and the second insertion hole can be accurately adjusted. Can be matched.

It is a perspective view which shows the mechanical lock mechanism of the disconnector in which the stopper 10 for disconnectors which concerns on embodiment of this invention is arrange|positioned. It is the front view (a) which shows the stopper 10 for disconnectors, a top view (b), and an AA sectional view (c). It is the front view (a) and side view (b) which show the mechanical lock mechanism of the disconnector in which stopper 10 for a disconnector was arranged. It is a BB sectional view of Drawing 3 (b) showing a state where a stopper for disconnectors was arranged and a lock pin was inserted. It is a BB sectional view showing a state in which a stopper for a disconnector is not arranged and a shaft pin is displaced and a lock pin cannot be inserted.

Hereinafter, the present invention will be described based on the illustrated embodiments.

1 to 4 show an embodiment of the present invention, and FIG. 1 is a perspective view showing a mechanical locking mechanism of a disconnector in which a disconnector stopper 10 according to the embodiment of the present invention is arranged. The disconnector stopper 10 is disposed on the disconnector installation base 50 and supports the handle 22 when the handle 22 is in the locked or unlocked position. First, the mechanical lock mechanism of the disconnector will be described.

As shown in FIG. 1, the mechanical lock mechanism of the disconnector has a cylindrical operating rod 20 made of steel and two opposing shaft supporting portions 30, 30 supporting the operating rod 20 made of steel. With. The operating rod 20 is provided with a handle 22 extending substantially orthogonal to the axis of the operating rod 20. The handle 22 is rotated while holding the handle 22 to rotate the operating rod 20 around the axis to perform locking or unlocking. In this embodiment, the operation rod 20 is horizontally arranged on a horizontally installed base 50.

The shaft supporting portions 30, 30 are formed with holes for supporting the operation rod 20, and the both ends of the operation rod 20 are inserted in the holes and are arranged on the installation table 50 to support the operation rod 20.

The handle 22 extending substantially orthogonally from the operation rod 20 rotates until it comes into contact with the installation table 50. That is, the operation rod 20 rotates about a semicircle about the shaft center.

A shaft hole 21 (first pin insertion hole) having a size into which the lock pin 40 can be inserted is formed near one end of the operation rod 20 so as to penetrate substantially perpendicular to the axis of the operation rod 20. Has been done. The operation rod 20 is arranged so as to project so that the shaft hole 21 is exposed to the outside between the shaft support portions 30 and 30.

Two pin insertion pieces 31, 31 are provided on one shaft support portion 30 so as to face each other at a position sandwiching the exposed portion of the shaft hole 21 of the operating rod 20, and the pin insertion pieces 31, 31 are respectively provided. A pin insertion hole 32 (second pin insertion hole) having a size into which the lock pin 40 can be inserted is formed.

The shaft hole 21 is formed so as to coincide with the two pin insertion holes 32, 32 at a position where the operation rod 20 is locked or unlocked. Then, the lock pin 40 is passed through the pin insertion hole 32, the shaft hole 21, and the pin insertion hole 32 in this order, and the lock pin 40 fixes the operation rod 20 and the pin insertion piece 31 so that the handle 22 cannot be moved. Thus, the locked state or the unlocked state is maintained.

The disconnector stopper 10 according to the embodiment of the present invention is arranged in a mechanical lock mechanism of such a disconnector.

Next, the disconnector stopper 10 will be described.

As shown in FIG. 2, the disconnector stopper 10 has a flat columnar shape as a whole, and a handle abutment portion 11 whose upper half abuts the handle 22 and a lower half abut the installation table 50. It is formed on the contact portion 12.

The handle abutment portion 11 and the installation base abutment portion 12 are formed in a flat cylindrical shape having a diameter of about 20 mm. When the handle 22 comes into contact with the handle 22, the handle 22 is made of steel and is crushed by the weight of the handle 22 so that its dimensions do not change, and the handle 22 is elastic enough to absorb a shock when the handle 22 is operated. Is formed of a material having In the disconnector stopper 10 of this embodiment, the handle contact portion 11 and the installation base contact portion 12 are made of hard rubber. That is, the disconnector stopper 10 can support the weight of the handle 22 made of steel mainly due to the characteristics of the material of which it is made, and absorb the impact when the handle 22 abuts.

The handle contact portion 11 is provided with a threaded portion 13 downward from the center of the bottom surface of the columnar shape. The screw portion 13 is a bolt, and the head portion of the bolt is adhesively fixed to the handle contact portion 11 such that the head rubber portion is embedded in the hard rubber of the handle contact portion 11.

A nut portion 15 for fitting a screw portion 13 in the center of the top surface of the column is embedded in the installation table abutting portion 12 so as to be flush with the top surface of the installation table abutting portion 12 and fixed by adhesion. ..

By tightening the screw portion 13 of the handle abutment portion 11 into the nut portion 15 of the installation base abutment portion 12 to fit them, the handle abutment portion 11 and the installation base abutment portion 12 are connected, and the disconnection is performed as a whole. The instrument stopper 10 has a cylindrical shape with a height of about 10 mm. The height of the disconnector stopper 10 is lowered by turning the handle contact portion 11 and tightening the screw portion 13, and is increased by loosening it. As a result, the disconnector stopper 10 is adjustable in size (height in the present embodiment) with respect to the direction in which the handle 22 abuts.

The spring washer 14 has the screw portion 13 inserted therein and is arranged between the handle contact portion 11 and the installation base contact portion 12. It is a spring in which a steel material having elasticity is formed in a spiral shape. When the screw portion 13 of the handle contact portion 11 is tightened, the gap between the handle contact portion 11 and the installation base contact portion 12 becomes narrower, and the spring washer 14 contracts in the vertical direction. As a result, the spring washer 14 is biased in the vertical direction, and a force is applied to the handle contact portion 11 and the installation base contact portion 12 so as to separate them from each other. As a result, the screw portion 13 and the nut portion 15 are fixed, and the height of the disconnector stopper 10 can be maintained without being loosened or tightened. The spring washer 14 may be one that can be biased in the vertical direction by contracting, and may be, for example, a rubber bush or the like.

A neodymium magnet 16 is embedded on the bottom surface side of the installation table abutting portion 12. When the disconnector stopper 10 is installed on the disconnector installation base 50 made of steel, the installation base contact portion 12 is attracted to the installation base 50 by the magnetic force of the neodymium magnet 16. As a result, the disconnecting switch stopper 10 is detachable from the installation base 50 because it has a suction force that can be held and peeled by hand, although it does not easily shift.

Next, the operation of the disconnector stopper 10 will be described.

As shown in FIG. 5, when the handle 22 and the installation base 50 come into contact with each other when the handle 22 is turned to the locked or unlocked position, the operation rod 20 causes the shaft hole 21 and the pin insertion hole 32 to come into contact. It will rotate to the position where it is displaced. Therefore, as shown in FIGS. 1 and 3, the disconnector stopper 10 is arranged at a position facing the handle 22 when the handle 22 is turned to the locked or unlocked position on the disconnector installation base 50. .. That is, the disconnector stopper 10 contacts the handle 22 and supports the handle 22 when the handle 22 is rotated to the locked or unlocked position.

When operating the mechanical lock mechanism of the disconnector, the handle contact portion 11 of the disconnector stopper 10 is turned to adjust the height by the degree of tightening of the screw portion 13, and the handle 22 is in the locked state or the unlocked state. Then, the shaft hole 21 formed in the operation rod 20 is set to a height that exactly matches the pin insertion hole 32. Then, due to the magnetic force of the neodymium magnet 16 provided in the installation base contact portion 12 of the disconnector stopper 10, it is attracted to the installation base 50 at a position facing the handle 22.

When the disconnector stopper 10 having such a configuration is arranged in the mechanical lock mechanism of the disconnector to bring the handle 22 to the locked or unlocked position, the disconnector stopper 10 supports the handle 22. That is, as shown in FIG. 4, when the handle 22 is rotated to the unlocked position, the disconnecting switch stopper 10 and the handle 22 come into contact with each other, so that the rotational position of the operating rod 20 changes from the shaft hole 21 to the pin insertion hole 32. The lock pin 40 can be inserted into the position where is coincident with. As a result, the work of inserting the lock pin 40 of the mechanical lock mechanism of the disconnector can be performed without any trouble.

As described above, according to the disconnector stopper 10, only by operating the handle 22 of the mechanical lock mechanism of the disconnector to the position in the locked state or the unlocked state, the shaft hole 21 and the pin insertion hole of the operation rod 20 can be obtained. 32 can be aligned, and the lock pin 40 can be inserted without the work of inserting the lock pin 40 with the other hand while aligning the shaft hole 21 and the pin insertion hole 32 by holding the handle 22 with one hand. Therefore, it is possible to significantly improve the work efficiency.

Since the disconnector stopper 10 is detachable, the disconnector stopper 10 only needs to be arranged at the time of work, and it is not necessary to prepare and dispose the disconnector stopper 10 for each disconnector. Labor saving can be achieved. Further, by removing the disconnector stopper after use, the disconnector stopper does not interfere with other work.

Further, since the size can be adjusted, the lock pin 40 can be inserted even in a mechanical lock mechanism of a disconnector having a different size, and the lock pin 40 can be inserted even if the play of the handle 22 is different due to individual product differences. The position can support the handle 22.

Although the embodiment of the present invention has been described in detail above, the specific configuration is not limited to this embodiment, and even if there is a design change or the like within a range not departing from the gist of the present invention, Included in the invention. For example, in the disconnector stopper 10, the handle contact portion 11 that contacts the handle 22 and the installation table contact portion 12 that contacts the installation table 50 are made of hard rubber. In this case, the handle 22 made of steel has a rigidity that does not change its dimensions due to being crushed by the weight of the handle 22 and has an elasticity sufficient to absorb the shock when the handle 22 comes into contact with the disconnector stopper 10 as a whole. It may be formed of a material that has, and may be replaced with, for example, an elastomer or another resin, or wood. Further, only the contact portion of the handle 22 may be made of a material having such characteristics and functions.

In this disconnector stopper 10, the attracting method at the time of placement is based on the magnetic force of the neodymium magnet 16, but if it is a detachable method, it can be peeled off and re-bonded to the bottom surface of the installation table abutting portion 12, for example. An elastic adhesive may be applied. Although the disconnector stopper 10 has a columnar shape, it goes without saying that the disconnector stopper 10 may be formed into a quadrangular prism shape or a polygonal prism shape to be included in the invention.

10 Stopper for disconnector 11 Handle contact part 12 Installation base contact part 13 Screw part 14 Spring washer 15 Nut part 16 Neodymium magnet 20 Operation rod 21 Shaft hole 22 Handle 30 Shaft support part 31 Pin insertion piece 32 Pin insertion hole 40 Lock pin 50 Installation stand

Claims (3)

The operation rod is provided with a first pin insertion hole penetrating substantially orthogonally to the axis, the pivot support member axially supporting the operation rod is provided with a second pin insertion hole, and substantially orthogonal to the axis of the operation rod. To rotate or lock the lock by unlocking the operating rod around the axis to insert the lock pin by aligning the first pin insertion hole and the second pin insertion hole. And a stopper for a disconnector arranged in a mechanical lock mechanism of the disconnector that is maintained in a locked state or an unlocked state,
The lock pin is arranged so as to face the handle when the lock or unlock is performed, and the first pin insertion hole and the second pin insertion hole are aligned with each other with the handle in contact with each other. Formed into a possible shape,
A disconnector stopper characterized in that It is removable from the disconnector,
The disconnector stopper according to claim 1, wherein: The dimensions are freely adjustable with respect to the direction in which the handle abuts,
The stopper for disconnecting switches according to claim 1 or 2, characterized in that.

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