JP2013045615A - Lock device of switch operation rope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking device that accommodates and locks the lower end portion of an operation rope of a pole switch and effectively prevents operation of the switch with the operation rope by an unauthorized person.
A lock device (1) includes a case (2) that can be attached to a side surface of a utility pole, and a case body (3) having a recess (7a) for receiving two operation ropes (R). A horizontal guide plate 9 and a pressing member 10 are provided in the upper part of the main body 3. The guide plate 9 is fixed horizontally and facing up and down, and a pair of recesses 9a are provided at positions corresponding to the recesses 7a. The holding member 10 includes a screw rod 11 standing between the guide plates 9 and 9, a nut 12 screwed to the screw rod 11, and a presser plate 13 that penetrates the screw rod 11 and is coupled to the nut 12 so as to be relatively rotatable. To do. When the nut 12 is tightened, the operation rope R is restrained by the recess 9 a and the presser plate 13. While receiving the receiver 14 in the main body 3, the lid 4 is provided with a lock 18 having a rotor that is coupled to a stopper 18 a that protrudes from the back of the receiver 14 at the locking position.
[Selection] Figure 5

Description

  The present invention accommodates the lower end portion of the operation rope connected to the switch lever of the switch to open and close the switch provided on the power pole as equipment on the distribution line from the ground position, and prevents operations other than the administrator It relates to a locking device.

  The switches on the utility poles are opened and closed only by managers such as electric utilities, and measures are taken to prevent operations by persons other than specified persons in order to prevent serious accidents caused by operations by unauthorized persons other than these. There is a need. For example, the operation rope fixing release device described in the cited document 1 has a notch portion at the lower end portion of the front plate of the cover case that houses the lower end portion of the operation rope, and is supported so as to be movable up and down in the cover case. One end of the slide member is pivotally supported by the slide member, the middle portion is pivotally supported by the cover case so as to be movable in the longitudinal direction, and the other end approaches and separates from the side surface of the cover case to A holding member that is fixed to and released from the cover case, and an upper biasing position that is not screwed to the slide member and a lowering position that is screwed to the slide member so as to avoid interference of the dedicated operation instrument in the notch portion of the front plate. And a fixing screw engaged with the slide member so as to be movable between them. In this operation rope fixing release device, the holding screw is released from the operation rope by moving the slide member downward by lowering the fixing screw engaged with the slide member with a dedicated operation instrument and rotating the fixing screw. It is.

Japanese Unexamined Patent Publication No. 2006-031958

In the above-mentioned conventional apparatus, the special operation instrument does not require a special structure and can be easily released using a bar with a hook at the tip, so the operation rope that is free is managed Unauthorized persons other than the person can easily operate the switch, leading to a serious accident.
Therefore, the present invention provides a lock device that accommodates and locks the operation rope of the switch and effectively prevents the operation of the switch with the operation rope by an unauthorized person.

In the operation rope lock device for a switch according to the present invention, in order to operate a switch at a high place installed on a utility pole, the upper end is locked to the switch lever of the switch and the lower end operation part is pulled down at a lower position. An operation rope R is received in order to accommodate the operation section of the operation rope to be switched by making it impossible for an unauthorized person to operate, while allowing the operation of the administrator by releasing the operation section. A case having an insertion hole 7a for accommodating the operation portion of the operation rope R and closing the lid portion 4 while being openable and capable of taking out the operation portion of the operation rope R and detachable from the utility pole 2, the operation portion of the operation rope R is restrained inside the case 2 to prevent the operation rope R from being pulled down, while the operation portion of the operation rope is released in the opened state. And then Rope fixing means 8 enabling the lowering operation, and a stopper 18a fixed to the lid portion 4 of the case 2 and engaged with a receiver 14 provided on the main body to prevent the lid portion 4 from being opened. And a lock 18 that locks the case 2 by locking in the engagement position.
The rope fixing means 8 is erected in the center between a pair of opposed guide plates 8 having recesses 8a that are received at different vertical positions of the rope R arranged in the vertical direction in the case 2, and the guide plates 8 and 8. A bolt 11 and a presser plate which is rotatably coupled to a nut 12 screwed into the bolt and presses the rope R between the guide plates 8 and 8 by tightening the bolt 11 and the nut 12 are provided.

  In the present invention, since the lower end portion of the operation rope of the switch is accommodated and locked, access to the operation rope of an unauthorized person can be effectively prevented, and an accident caused by the operation of the switch can be surely prevented. .

It is a perspective view of the locking device of the operation rope for switches concerning the present invention. It is a front view of the locking device of FIG. It is a side view of the locking device of FIG. It is a top view of the locking device of FIG. It is a perspective view of the locking device of an open state. It is a front view of the locking device of FIG. It is VII-VII sectional drawing of FIG. It is VIII-VIII sectional drawing of FIG.

An embodiment of the present invention will be described with reference to the drawings.
1 to 4, the locking device 1 has an upper end locked by a switch lever of a pole switch (not shown), and accommodates and fixes an operation rope R for opening and closing with a grip R1 at the lower end. It is. The lock device 1 is installed on the side of a power pole that is difficult to reach in order to prevent an unauthorized person from easily accessing from the ground.

  The locking device 1 includes a case 2 that is fixed to a side surface of a utility pole with a stainless steel mounting band 20. The case 2 is made of an aluminum alloy, and a lid 4 is hinged to a main body 3 opened forward by a hinge 5 on a side. Locking rings 5a on the main body 3 side of the hinge 5 are provided on both sides of the main body, and the opening direction of the lid 4 can be changed left and right according to the surrounding environment at the installation position.

  Protruding pieces 6 having insertion holes 6a through which the attachment bands 20 pass are provided at the four corners of the back surface of the main body 3. The top plate 7 of the main body 3 has a concave portion 7a that forms an insertion hole by closing the opening of the lid portion 4 in the closed state in which the lid portion 4 is fitted to receive two operation ropes R. A pair is provided at intervals.

  As shown in FIGS. 5 to 8, a rope fixing mechanism 8 including a pair of upper and lower horizontal guide plates 9 and a pressing member 10 is provided in the upper part of the main body 3. The guide plate 9 is horizontally fixed to the back plate 3a of the main body 3 so as to be opposed to each other with an interval in the vertical direction. The guide plate 9 has a pair of recesses 9a at corresponding positions of the recesses 7a, and a stopper piece 9b that extends an edge on one side of the alternate one of the recesses 9a. The holding member 10 includes a screw rod 11 fixed perpendicularly to the back plate 3a at an intermediate portion between the guide plates 9, 9, a nut 12 screwed into the screw rod 11, and one end of the nut 12 relative to the axis. A presser plate 13 having a U-shaped cross section, which is rotatably coupled and penetrates the center through a screw rod. When the presser plate 13 is fitted between the guide plates 9, it is prevented from rotating together with the nut 12. When the nut 12 is tightened on the screw rod 11, the press plate 13 approaches the back plate 3a while the press plate 13 narrows the recess 9a, so that the operation rope R is restrained between the recess 9a and the press plate 13. And fixed.

  A pair of upper and lower support pieces 15 are provided on both sides of the main body 3 so as to rise forward from the back plate 3a and to which the receiving metal 14 is screwed between the tips. The catch 14 is screwed to the ends of the upper and lower support pieces 15 so that the latch 16 can be changed to the left and right positions according to the attachment position of the lid 4. The central portion in the main body 3 has a partition piece 17a for partitioning the accommodating portion 17 that accommodates the two operation ropes R taken in and the grip R1 at the end thereof. At both ends of the partition piece 17a, a rod body around which the rope R is wound is erected on the back plate 3a as required.

  A lock 18 for locking the lid 4 to the main body 3 is fixed to the front surface of the lid 4. The lock 18 is provided with its axis line oriented in the front-rear direction, and the rotor to which the clasp 18a protruding on the back of the catch 14 of the main body 3 is coupled by the key operation is reversed between the unlocked position and the locked position. It is a rotating cylinder lock. The key can be inserted and removed only in the locked position. A dust cap that opens and closes the keyhole is pivotally attached to the lock 18 so as to be rotatable along the front surface of the lid portion 4. The clasp 18a rotates with the rotor of the cylinder lock 3 and is in a release position away from the catch 14 in the unlocked position of the rotor, allowing the lid 4 to be opened, while being in a fitted state in the locked position of the rotor. It is located on the back of the receiver 14 of the main body 3 and prevents its opening.

  In this locking device 1, after being attached to the power pole on which the switch is installed with a mounting band, the operation rope R is inserted into the concave portion 7 a of the main body 3 of the case 2 and the concave portion 9 a of the guide plate 9, The pressing member 10 is fixed between the guide plates 9. When the presser member 10 is screwed into the screw rod 11 and the nut 12 is tightened, the presser plate 13 together with the nut 12 approaches the back plate 3a of the main body 3. Therefore, the operation rope R is pressed against the guide plate 9 in the recess 9a. It is clamped and fixed to the plate 13. In this state, the operation rope R cannot be pulled down and the switch cannot be operated. When the end portion of the operation rope R is disposed in the accommodating portion 17, the lid portion 4 is put on the main body 3, and the key is rotated, the clasp 18 a projects over the back portion of the catch 14 of the main body 3 and locks the lid portion 4. . Thereby, an unauthorized person other than the administrator who holds the key cannot access the operation rope R.

DESCRIPTION OF SYMBOLS 1 Locking device 2 Case 3 Main body 4 Lid 7a Concave 8 Rope fixing mechanism 9 Guide plate 9a Concave 10 Pressing member 11 Screw rod 12 Nut 13 Presser plate 14 Receiving plate 18 Lock 18a Stopper 20 Mounting band R Operation rope

Claims (2)

Accommodates the operation part of the operating rope that is operated by switching the switch by pulling down the lower end operation part at the lower position, with the upper end locked to the switch lever of the switch to operate the switch at a high place installed on the utility pole While disabling unauthorized operation, the operation unit is released to allow administrator operations.
Has an insertion hole for receiving the operation rope, accommodates the operation part of the operation rope inside and closes the lid part, and can be opened to take out the operation part of the operation rope and attachable to and detachable from the utility pole A simple case,
In the case, the operation portion of the operation rope is constrained in the case to prevent the operation rope from being lowered, while the operation rope is released in the opened state so that the operation rope can be lowered. Rope fixing means to perform,
A lock that is fixed to the lid of the case and engages with a receiving plate provided on the main body to prevent the opening of the lid and is locked at a position engaged with the receiving plate to lock the case. An operation rope locking device for a switch, comprising: The rope fixing means includes a pair of opposed guide plates having recesses that are received at different vertical positions of ropes arranged in the vertical direction in the case;
A bolt erected in the center between these guide plates;
A switch device for an operating rope for a switch, comprising a presser plate that is rotatably coupled to a nut that is screwed to the bolt and that fixes the rope between guide plates by tightening the bolt and the nut.

Images