JPH052767Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a device for keeping an inspection opening door open during work in a cubicle housing power receiving and distribution equipment.

(Prior art and its problems) Among the cubicles housing power receiving and distribution equipment, if an opening is provided so that the interior can be inspected during a power outage, during work inside the cubicle, For example, it is necessary to keep the door open in order to ensure the safety of workers by letting shocks caused by high-voltage discharge escape to the outside. Additionally, the door must be kept closed and locked at all times to prevent unauthorized entry.

However, if the door closes due to human error or natural phenomena such as wind while working inside the cubicle, there is a risk of danger to the worker.

SUMMARY OF THE INVENTION Accordingly, the present invention attempts to solve the above-mentioned problems with conventional cubicles and to provide a device for locking the door to prevent it from being closed while working inside the cubicle.

(Means for Solving the Problems) In the present invention, in order to solve the above problems, in a cubicle for power receiving and distribution equipment equipped with an opening 2 with a door 3 that allows entry into the interior for maintenance and inspection, the door 3 A support member 5 is fixed to the inner lower part of the cubicle body 1, and a vertical lock rod insertion hole 6 and a locking hole 7 are formed in the support member 5, and a vertical lock rod is also formed in the lower frame 8 of the opening of the cubicle main body 1. With the insertion hole 9 formed and the door 3 open, a plurality of lock rods 11 that fit into each of the lock rod insertion holes 6 and 9 are drilled in the lower surface, and a lock hole that matches the lock hole 7 is formed. 12 is removably interposed between the door 3 in the open state and the opening lower frame 8,
Lock hole 1 of this lock plate 10 when installing the lock plate
A ring 16a is passed through the locking hole 7 of the support member 5 and the padlock 16 to lock the door opening device.

(Function) In the door opening device of the present invention, as shown in FIG.
By interposing the lock plate 10 between the door 3 and the door 3, the open state of the door 3 is maintained. The lock plate 10 is attached by fitting its lock rod 11 into the lock rod insertion holes 6 and 9 of the support member 5 and the lower frame 8. In this state, the door 3 is prevented from rotating by the lock plate 10, so the opening 2 cannot be closed. After attaching the lock plate 10, the padlock 16 is locked and the worker takes possession of the key. In this way, there is no risk that the lock plate 10 will be removed by mistake. Therefore, the safety of the workers working inside can be ensured.

(Embodiment) An embodiment of the present invention is shown in FIGS. 1 to 5.
In the figure, a cubicle body 1 housing power receiving and distribution equipment therein is provided with an opening 2 for entering the interior for maintenance and inspection. A door 3 is hinged to this opening 2. 4 is a hinge.

A plate-shaped support member 5 is fixed to the inner lower part of the door 3 so as to extend horizontally. This support member 5 has a vertical locking rod insertion hole 6 and a locking hole 7 formed therein.

A vertical locking rod insertion hole 9 is also formed in the lower frame 8 of the opening 2 of the cubicle body.

A plurality of lock rods 11 are drilled in the lower surface of the lock plate 10 to fit into the lock rod insertion holes 6 and 9 of the door 3 and the lower frame 8 when the door 3 is opened at 90 degrees with respect to the cubicle body 1. has been done. Also, lock plate 10
is provided with a locking hole 12 corresponding to the locking hole 7 of the support member 5, and a caution sticker 13 ``Do not remove during work'' is affixed to the surface. Therefore, the lock plate 10 can be detachably interposed between the door 3 in the open state and the lower opening frame 8.

The clamping fitting 14 holds the lock plate 10 and the support member 5 when the lock plate 10 is attached to the door 3.
It has a U-shaped cross section that can be attached from the side by sandwiching it from above and below, and there is a through hole 1 in the center for inserting a padlock.
5.

Therefore, in the door opening device of this embodiment, the lock plate 10 is inserted between the support member 5 inside the door 3 and the lower frame 8 of the opening 2 while the door 3 is open during inspection work on the internal equipment. By intervening,
This is to maintain the door 3 in an open state. The lock plate 10 is attached by fitting its lock rod 11 into the lock rod insertion holes 6 and 9 of the support member 5 and the lower frame 8. In this state, the door 3 is prevented from rotating by the lock plate 10, so the opening 2 cannot be closed. In addition, in this state, the clamping fitting 14 is attached from the side so as to sandwich the lock plate 10 and the support member 5 from above and below, and the ring 1 of the padlock 16 is inserted into the locking holes 7, 12, 15.
6a, lock it, and carry the key with you as you work. In this case, since no one else can remove the lock plate 10, the open state can be maintained more reliably. Therefore, the safety of the workers working inside can be ensured.

Note that the present invention is not limited to the illustrated embodiment; for example, the clamping fitting 14 may be attached to the locking plate 1.
The purpose is to restrain the lock rod 11 of No. 0 so that it does not come off from the support member 5, so the lock rod 11 is
If it is made appropriately long, the padlock 16 alone can be used without the clamping fitting 14.

(Effects of the invention) As described above, in the present invention, in a cubicle for power receiving and distribution equipment equipped with an opening 2 with a door 3 that allows entry into the interior for maintenance and inspection, a support member 5 is attached to the inside lower part of the door 3. A vertical locking rod insertion hole 6 and a locking hole 7 are formed in the support member 5, and a lower frame 8 of the opening of the cubicle body 1 is formed.
A vertical locking rod insertion hole 9 is also formed in each of the locking rod insertion holes 6 and 9 with the door 3 open.
A lock plate 10 is provided with a plurality of locking rods 11 protruding from the lower surface and has a locking hole 12 that matches the locking hole 7, and is attached and detached between the door 3 in the open state and the lower frame 8 of the opening. Since the door opening device is configured such that the padlock 16 can be locked by inserting the ring 16a into the locking hole 12 of the locking plate 10 and the locking hole 7 of the support member 5 when the locking plate is installed, the door opening device can be locked. This has the effect of preventing accidents in which the door closes due to human error or natural phenomena such as wind, thereby ensuring worker safety.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a perspective view of the door opening device, Fig. 2 is an external view of the cubicle, Fig. 3 is a plan view of the door opening device in the open state, and Fig. 4 5 is a front view of the door opening device in the open state, and FIG. 5 is a plan view of the door opening device in the closed state. 1... Cubicle, 2... Opening, 3... Door,
4...Hinge, 5...Supporting member, 6...Lock rod insertion hole, 8...Bottom frame, 9...Lock rod insertion hole, 10
... Lock plate, 11 ... Lock bar, 16 ... Padlock.

Claims (1)

[Scope of utility model registration request] In a power receiving and distribution equipment cubicle equipped with an opening with a door that allows entry into the interior for maintenance and inspection, a support member is fixed to the inside lower part of the door, and this support member has a vertical locking rod insertion hole and a lock. A hole is formed, and a vertical locking rod insertion hole is also formed in the lower frame of the opening of the cubicle body, and with the door open, a plurality of locking rods that fit into each of the locking rod insertion holes are inserted into the lower surface of the cubicle body. A locking plate with a protruding locking hole formed therein that matches the locking hole is removably interposed between the open door and the lower frame of the opening, and when the locking plate is installed, the locking plate is locked. A door opening device for a cubicle for power receiving and distribution equipment, characterized in that a padlock can be locked by passing a ring through a hooking hole and a locking hole of the support member.