JP2011101500A - Cover support for box-shaped cut-out - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cover support for a box-shaped cut-out, capable of smoothly mounting and demounting a fuse tube, and capable of closing a cover without a complicated work under the state where the fuse tube is removed. <P>SOLUTION: In the cover support for the box-shaped cut-out, each connecting piece of the fuse tube is connected to a first connecting terminal and a second connecting terminal in a cut-out body, and the cover pivotally attached to the cut-out body is configured so as to maintain the state with an opening being closed. The cover support for the box-shaped cut-out includes a body of rotation pivotally attached to a frame rotatably. In the cover support, the body of rotation includes a first extension, a first cover support capable of being opposed to the front side of the cover, and an elastomer extended to the first extension and having flexibility. In the cover support, a regulator controlling the rotation of the body of rotation at a place supporting the cover at a specified degree of opening by the first cover support is mounted. In the cover support, the elastomer includes a second extension connected to the first extension, and a second cover support continuously connected to the second extension to be capable of being inserted into a hole for operating the cover. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lid support device for a box-shaped cutout installed in a transformer room of a building or a condominium, and more specifically, when replacing a fuse tube of a box-shaped cutout installed in a transformer room. In addition, the box-shaped cutout lid is maintained at an appropriate opening that allows the fuse tube to be attached and detached, and the box-shaped cutout lid from which the fuse tube has been removed is maintained in a closed state. The present invention relates to a lid support device.

  Conventionally, in buildings such as buildings and condominiums, as shown in FIGS. 10A and 10B, the electricity (high voltage electricity) of the primary power system L1 is transformed (decompressed) to the commercial voltage. The transformer facility TF is provided.

  The transformer facility TF includes a cutout (switch) 5, a transformer (transformer) 6, and the like, and is installed in a transformer room R provided in the building. And this kind of transformation equipment TF is attached to the pillar P in which the cutout 5 is erected in the transformer room R or the beam member T (the beam member T in FIG. 10) connected to the pillar P. A heavy object (large equipment) such as a transformer 6 is installed on basic concrete or a base plate (see, for example, Patent Document 1).

  The cutout 5 is usually a box-shaped cutout. That is, the cutout 5 has a cylindrical shape and a box shape. Since the cylindrical cutout is intended for a salt-damaged area, the box-like shape is usually placed in the transformer room R without salt damage. Cutout (so-called box-shaped cutout) 5 is employed.

  Here, the box-shaped cutout 5 will be described. The box-shaped cutout 5 includes a first connection terminal 50 and a secondary power system that are electrically connected to the primary power system L1 as shown in FIG. L2 (for example, the secondary power system L2 connected to the transformer 6: see FIG. 10) and a second connection terminal 51 that is electrically connected, and a box-like shape in which an open portion 52 that communicates with the inside and outside is formed on one surface. In order to open and close the opening 52 of the cutout main body 53, the cutout main body 53 is pivotally attached to the cutout main body 53, and a lid body 55 configured to hold the fuse tube 54 is provided. .

  Each of the first connection terminal 50 and the second connection terminal 51 housed in the cutout body 53 can be inserted with a pair of connectors (connection blades) 54a, 54b provided on the fuse tube 54 from the open portion 52 side. It is configured.

  The lid body 55 has one end portion in one direction pivoted to the lower end portion of the cutout body 53, and a projecting piece 56 is provided at the other end portion in one direction on the front surface (outer surface). The projecting piece 56 is provided with an operation hole 57 penetrating in the same direction as the direction in which the rotation axis (pivoting shaft) of the lid 55 extends.

  The lid 55 holds the fuse tube 54 in a posture in which the axis of the fuse tube 54 coincides with the one direction. By sliding the fuse tube 54 in the axial direction, the fuse tube 54 is held. 54 is released. That is, the lid 55 can be attached and detached by disposing the fuse tube 54 on the inner surface side of the lid 55 and moving it in the axial direction.

  And when this kind of box-shaped cutout 5 closes the cover body 55, the connectors 54a and 54b of the fuse tube 54 held by the cover body 55 are respectively connected to the first connection terminal 50 and the second connection terminal. These are inserted into 51 and are electrically connected. That is, the box-shaped cutout 5 can connect and release the connectors 54a and 54b of the fuse tube 54 with respect to the first connection terminal 50 and the second connection terminal 51 as the lid 55 is opened and closed. Yes. The box-shaped cutout 5 having the above-described configuration is such that the lid 55 closes the open portion 52 by inserting the connectors 54 a and 54 b of the fuse tube 54 into the first connection terminal 50 and the second connection terminal 51. It is also designed to maintain in the state.

  12 is used for the opening / closing operation of the lid body 55 and the replacement operation of the fuse tube 54 of the box-shaped cutout 5 having the above-described configuration. The indirect live wire operation rod Z is composed of a rod-shaped operation rod main body Za made of an insulating material and a tip tool Zb attached to or attached to the distal end of the operation rod main body Za. The tip tool Zb includes a hook F formed so as to be insertable into the operation hole 57 of the lid 55 (projection piece 56) and a slit portion S into which the connectors 54a and 54b of the fuse tube 54 can be press-fitted. .

  As a result, the indirect live-line operating rod Z is moved (operated) in the axial direction in a state where the hook F is inserted into the operation hole 57 of the lid body 55 and the hook F is hooked on the protruding piece 56 (lid body 55). By doing so, the opening 55 can be opened and closed by rotating the lid 55 around the rotation axis. Further, the indirect hot wire operating bar Z can hold the fuse tube 54 by press-fitting the connectors 54a and 54b of the fuse tube 54 into the slit portion S.

JP 2005-39938 A

  By the way, the box-shaped cutout 5 installed in the transformer room R has an opening portion 52 directed obliquely downward at a low position of 1 m to 1.5 m on the floor due to the restriction on the indoor height of the transformer room R. In this way, it is fixed to the column P or the beam material T.

  Therefore, there is a problem that the transformer facility TF installed in the transformer room R cannot smoothly replace the fuse tube 54 of the box-shaped cutout 5. That is, the box-shaped cutout 5 has a lid 55 pivotally attached to the lower portion of the cutout main body 53 and is disposed at a low position with the opening 52 facing obliquely downward, as shown in FIG. When the lid body 55 is opened (when the lid body 55 hangs down), the distance between the lid body 55 (the fuse tube 54 held by the lid body 55) and the floor surface is reduced, resulting in an indirect hot line operation. There was a problem that a sufficient space for operating the rod Z was not secured, and the replacement work of the fuse tube 54 could not be performed smoothly. Further, as described above, since the box-shaped cutout 5 is installed at a low position, as shown in FIG. 13, the opening / closing operation of the lid 55 and the fuse tube 54 are performed in a posture in which the worker WM is bent or crouched. There is a problem that the work burden on the worker WM is heavy.

  Under such circumstances, when the fuse tube 54 is attached / detached, a single worker extends the lid body 55 in a lateral orientation (substantially horizontal direction) in order to secure an operation space for the indirect hot wire operation rod Z. It is conceivable that other workers perform the attaching / detaching operation of the fuse tube 54 with the indirect hot wire operating rod Z, but if this is done, a series of operations must be performed by two or more people. Therefore, it is not preferable from the viewpoint of work efficiency.

  Further, since the box-shaped cutout 5 can close the lid 55 due to the presence of the fuse tube 54, as described above, the first connection is in a high-voltage live line state when the fuse tube 54 is removed. The terminal 50 is exposed and is dangerous. Therefore, normally, until a new fuse tube 54 is attached, a dummy fuse tube (a fuse tube resembling only the shape) is attached and the lid 55 is closed. Since it must be removed afterwards, the attaching / detaching operation is complicated and causes a reduction in work efficiency.

  Therefore, in view of such circumstances, the present invention can smoothly attach and detach the fuse tube, and can further close the lid without performing complicated work with the fuse tube removed. It is an object of the present invention to provide a lid support device for shape cutout.

  The lid support device for box-shaped cutout according to the present invention is internally provided with a first connection terminal connected to the primary power system and a second connection terminal connected to the secondary power system. A box-shaped cutout main body formed with an open portion leading to the lid, and a lid body that is pivotally attached to the cutout main body to open and close the open portion of the cutout main body and configured to hold the fuse tube, When the lid is pivotally attached to the cut-out body, an operation hole is formed in the lid that extends in the same direction as the pivot axis, and each connector of the fuse tube is the first connection when the lid is closed. A box that is electrically connected to the terminal and the second connection terminal, and is configured to be maintained in a state in which the lid closes the opening, and is attached to a column or a beam provided in the transformer room of the building A lid support device for shape cutout, which is a box-shaped A frame body fixed to a column or a beam member on the rear side of the toe-out, and a rotating body coupled to the frame body so as to be rotatable about a rotation axis extending in a direction substantially the same as the extending direction of the pivot shaft. The rotating body includes a first extending portion extending in a direction orthogonal to a direction in which the rotating shaft extends from a connection position with the frame body, and substantially the same as a direction in which the rotating shaft extends from the first extending portion. A first lid support portion that extends in the direction and is opposed to the front side of the lid body with the open portion of the cutout body closed, and a flexible that is connected to the tip of the first extension portion. And at least one of the frame body and the rotating body restricts the rotation of the rotating body at a position where the first lid support section supports the lid body with a predetermined opening degree. The elastic body portion has a proximal end portion connected to a distal end portion of the first extension portion, and the rotating shaft. A second extending portion that extends in a direction orthogonal to the extending direction, and a second lid support that extends from the second extending portion in substantially the same direction as the extending direction of the rotating shaft and can be inserted into the operation hole. And a portion.

  According to the lid support device for box-shaped cutout having the above-described configuration, the frame body is fixed to the support column or the beam material on the rear side of the box-shaped cutout, and the rotating body is rotated around the rotation axis to thereby rotate the first lid body. Box-shaped cutout (lid) by bending the elastic body (at least one of the second extension and the second lid support) after the support is placed on the front side of the lid The second lid support part can be inserted into and removed from the operation hole.

  The lid support device for box-shaped cutout having the above configuration fixes the frame body as described above, and arranges the first lid support portion in front of the lid body and operates the second lid support portion. When inserted into the work hole, the rotating body is maintained in a state of intersecting with the cover body by inserting the second lid support portion into the operation hole. Then, the difference between the rotation trajectory of the second lid support part and the rotation trajectory of the operation hole of the lid (the difference between the rotation center of the rotation body and the rotation center of the lid, the second lid from the rotation center of the rotation body, The difference between the distance to the body support part and the distance from the rotation center of the lid to the operation hole) restricts the rotation of the lid. Therefore, even if the fuse tube is removed and the lid becomes rotatable around the pivot shaft, the lid is prevented from rotating carelessly and the open portion of the cutout body is not opened. be able to.

  In addition, according to the lid support device for box-shaped cutout having the above-described configuration, as described above, the rotation of the lid that closes the opening is restricted, but the lid is forced to rotate. Then, the elastic body portion bends and tilts, and the distance between the rotation center (rotation axis) of the rotation body and the second lid support portion (center) becomes longer. As a result, even if the rotation trajectory of the second lid support portion and the rotation trajectory of the operation hole of the lid body are different from each other, the movement of the second lid support portion is caused by the bending (elastic deformation) of the elastic body portion. The trajectory follows the rotation trajectory of the operation hole of the lid body, and each of the rotary body and the lid body rotates to open the open portion of the cutout body.

  And if a cover body becomes a predetermined opening degree, rotation of a rotary body will be controlled by the control part, and it will be in the state by which the cover body was supported by the 1st cover body support part. Thereby, the cover body holding the fuse tube can be maintained at a predetermined opening degree. That is, when removing the fuse tube, the lid can be maintained in a posture in which the indirect hot wire operation rod can be easily operated. Therefore, even if the box-shaped cutout is arranged at a low position, the fuse tube can be smoothly attached and detached.

  Further, the lid support device for box-shaped cutout having the above-described configuration can be obtained by removing the second lid support portion if it is an operation hole in a state in which the rotation of the lid body with the open portion closed is restricted. The held lid can be opened at a predetermined opening. Specifically, when the second lid support portion is removed from the operation hole, the rotating body can rotate around the rotation axis, and rotates until the rotation is restricted by the restricting portion. Then, since the first lid support portion and the second lid support portion do not exist in front of the lid body, the lid body can be rotated around the pivot shaft and the opening portion can be opened. Then, when the lid is rotated, the lid holding the fuse tube is opened at a predetermined opening degree, supported by the first lid support portion of the rotating body that has been rotated first and whose rotation is restricted at a predetermined angle. Can do. At this time, even if the second lid support portion is arranged to contact the first lid support portion earlier than the first lid support portion, the second lid support portion is one configuration of the elastic body portion. The elastic body part (mainly the second extension part) is deflected by the load, and the lid body is supported by the first lid body support part and the second lid body support part. The lid can be maintained in a posture in which the rod can be easily operated.

  As one aspect of the present invention, it is preferable that the rotating body includes a gripping protruding piece that can be gripped by an insulating jacket. If it does in this way, the opening-and-closing operation | work of a cover body can be easily performed using an insulating Yatco.

  As described above, according to the lid support device for box-shaped cutout of the present invention, it is possible to smoothly attach and detach the fuse tube, and further, without performing complicated work with the fuse tube removed. An excellent effect that the lid can be closed can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing of the transformation equipment used as the object of the cover support apparatus for box-shaped cutout which concerns on one Embodiment of this invention, Comprising: (a) shows a partial side view, (b) is a partial front view Indicates. It is explanatory drawing of the box-shaped cutout used as the object of the cover support apparatus for box-shaped cutout which concerns on the embodiment, Comprising: The side view which fractured | ruptured one part is shown. It is explanatory drawing of the cover support apparatus for box-shaped cutout which concerns on the same embodiment, Comprising: (a) shows the side view of the state attached to the beam material, (b) is a beam material and a beam material solid. II sectional drawing of (a) which showed the metal fitting with the dashed-two dotted line is shown. It is a schematic explanatory drawing of the tool used when replacing | exchanging a fuse pipe | tube with respect to the box-shaped cutout of the installation equipped with the cover support apparatus for box-shaped cutout of the embodiment, (a) is insulation The perspective view of a Yatco is shown, (b) shows the perspective view of an indirect hot wire operation stick | rod. It is explanatory drawing for demonstrating the action | operation of the cover body support apparatus for box-shaped cutout which concerns on the same embodiment, Comprising: The side view of the state which supported the cover body of the box-shaped cutout with the predetermined opening degree is shown. The state side view at the time of removing a fuse pipe | tube from the box-shaped cutout which concerns on the embodiment is shown. The schematic for demonstrating the working state in the transformation equipment equipped with the cover body support apparatus for box-shaped cutout which concerns on the same embodiment is shown. It is explanatory drawing for demonstrating another operation | movement different from the operation | movement of FIG. 5 of the cover support apparatus for box-shaped cutout which concerns on the same embodiment, Comprising: (a) is a cover body supporting a 2nd cover body. (B) shows a state in which the elastic body portion is bent and the lid is supported by the first lid support portion and the second lid support portion. It is explanatory drawing of the cover body support apparatus for box-shaped cutout which concerns on other embodiment of this invention, Comprising: (a) is the cover body support apparatus for box-shaped cutout which formed the inclination frame part in the frame body. FIG. 4B is a plan view of a box-shaped cutout lid in which an inclined frame portion is formed on a frame body in which a frame body and a rotating body (first extension portion and second extension portion) are formed straight. The top view of a body support apparatus is shown. It is explanatory drawing of the conventional transformer installation installed in the transformer room in a building, Comprising: (a) shows a partial side view, (b) shows a partial front view. It is a side view of the state where a part of the box-shaped cutout was broken, where (a) shows a state where the lid is closed, and (b) shows a state where the lid is opened. The partial perspective view of the conventional indirect hot wire operation rod used for opening and closing of a box-shaped cutout lid and replacement of a fuse tube is shown. The schematic for demonstrating the working state in the conventional transformer equipment is shown.

  Hereinafter, a lid support device for box-shaped cutout according to an embodiment of the present invention will be described with reference to the accompanying drawings. First, prior to description of a lid support device for box-shaped cutout according to the present embodiment (hereinafter simply referred to as a lid support device), a brief description of transformer equipment (cutout) targeted by the lid support device is provided. To do.

  Such a transformer facility is for transforming (depressurizing) the electricity (high voltage electricity) of the primary power system L1 to a commercial voltage as shown in FIG. 1 (a) and FIG. 1 (b). It is installed in the transformer room R provided in the building.

  The transformer facility TF includes a cut-out (switch) 5, a transformer (transformer) 6, and the like that are targets of the lid support device 1 according to the present embodiment. And this type of transformer TF is attached to a pillar P with a cutout 5 standing in the transformer room R or a beam T connected to the pillar P, and a heavy object such as a transformer 6 (large size) Equipment) is installed on foundation concrete or base plate.

  The cutout 5 is called a box-shaped cutout. As shown in FIG. 2, the first connection terminal 50 electrically connected to the primary power system L1 and the secondary power system L2 (for example, a transformer) Box-shaped cutout main body 53 in which a second connection terminal 51 electrically connected to a secondary power system L2 connected to 6 (see FIG. 1) is housed and an open portion 52 is formed on one side. And a lid 55 that is pivotally attached to the cutout main body 53 so as to open and close the open portion 52 of the cutout main body 53 and can hold the fuse tube 54.

  The cutout main body 53 is formed of an insulating material (generally, pottery). Each of the first connection terminal 50 and the second connection terminal 51 housed in the cutout body 53 has a pair of connectors (connection blades) 54a and 54b provided on the fuse tube 54 from the open portion 52 side. It is configured to be insertable.

  The lid 55 is made of an insulating material (generally, pottery). The lid body 55 has one end in one direction pivoted to the lower end of the cutout body 53, and a projecting piece 56 is provided on the other end in one direction on the front surface (outer surface). The projecting piece 56 is formed with an operation hole 57 penetrating in substantially the same direction as a direction in which a pivot shaft (not numbered) in which the lid 55 is pivotally attached to the cutout main body 53 is extended.

  The lid 55 holds the fuse tube 54 in a posture in which the axis of the fuse tube 54 coincides with the one direction. By sliding the fuse tube 54 in the axial direction, the fuse tube 54 is held. 54 is released. That is, the lid 55 can be attached and detached by disposing the fuse tube 54 on the lid 55 and moving (manipulating) the fuse tube 54 in the axial direction.

  In the box-shaped cutout 5 having the above-described configuration, when the lid body 55 is closed, the connectors 54 a and 54 b of the fuse tube 54 held by the lid body 55 are respectively connected to the first connection terminal 50 and the second connection terminal 51. They are inserted so that they are electrically connected. That is, the box-shaped cutout 5 can connect and release the connectors 54a and 54b of the fuse tube 54 with respect to the first connection terminal 50 and the second connection terminal 51 as the lid 55 is opened and closed. Yes. The box-shaped cutout 5 having the above-described configuration is such that the lid 55 closes the open portion 52 by inserting the connectors 54 a and 54 b of the fuse tube 54 into the first connection terminal 50 and the second connection terminal 51. It is also designed to maintain in the state.

  And since the transformer room R is in a building and there is a restriction on the height, the box-shaped cutout 5 installed in the transformer room R is installed at a low position. In the present embodiment, description will be made on the box-shaped cutout 5 attached to the beam T.

  The box-shaped cutout 5 includes a beam material T using a cutout mounting bracket 7 attached to the back surface of the cutout main body 53 and a beam material fixing bracket 8 for fixing the cutout mounting bracket 7 to the beam material T. It is fixed to.

  The cutout mounting bracket 7 is formed by bending a plate material into a dogleg shape. That is, the cut-out mounting bracket 7 is formed by bending a rectangular plate material so as to form a bending ridge line L extending in a direction (short direction) perpendicular to the longitudinal direction at an intermediate position in the longitudinal direction. Thus, a pair of attachment pieces 70 and 71 are formed with the bending ridge line L as a boundary. Each of the pair of attachment pieces 70 and 71 is provided with a through hole (not numbered) for inserting the bolt B. Thereby, the cutout mounting bracket 7 is attached to the box-shaped cutout 5 (cutout main body 53) by screwing the bolt B inserted into the through hole of one mounting piece 70 into the back surface of the cutout main body 53. It is supposed to be.

  The beam member fixing bracket 8 includes a pair of bracket members 80 and 81 arranged so as to sandwich the beam member T from above and below.

  Each of the pair of metal members 80 and 81 is formed by bending a plate material, and is configured to be fixed to the beam member T having a square cross section. Specifically, as shown in FIG. 3A, one metal fitting member 80 disposed on the upper side of the beam material T includes an upper surface facing portion 80a facing the upper surface of the beam material T, and the upper surface facing portion 80a. The upper surface facing portion 80a from the other end of the upper surface facing portion 80a, the side surface facing portion 80b hanging from one end, the connecting portion 80c extending in the same direction as the upper surface facing portion 80a with respect to the lower end of the side surface facing portion 80b. And a bolt fastening portion 80d extending in the same direction. On the other hand, the other metal fitting member 81 arranged on the lower side of the beam T is the same as the lower surface facing portion 81a facing the lower surface of the beam material T and the lower surface facing portion 81a from one end of the lower surface facing portion 81a. A connecting portion 81c extending in the direction, and a bolt fastening portion 81d extending from the other end of the lower surface facing portion 81a in the same direction as the lower surface facing portion 81a.

  The pair of metal members 80 and 81 are formed such that the connecting portions 80c and 81c overlap each other with the beam material T sandwiched therebetween. Each of the connecting portions 80c and 81c and the bolt fastening portions 80d and 81d is provided with a through hole (not numbered) through which the bolt B is inserted.

  Thereby, the beam member fixing bracket 8 inserts the bolt B into the through holes formed in the bolt fastening portions 80d and 81d of the both bracket members 80 and 81 and screws the nuts N, and By attaching the bolt B to the through holes formed in the connecting portions 80c, 81c of 81 and screwing the nuts N, the beam member T is sandwiched between the pair of metal members 80, 81 and attached. It can be done. As described above, the cutout mounting bracket 7 according to the present embodiment connects the connecting portions 80c and 81c of the pair of metal members 80 and 81 as described above. The bolt B inserted into the through hole is inserted into the through hole formed in the other mounting piece 71, and a nut N is screwed into the bolt B to be fixed to the beam material T (beam material fixing bracket 8). It has come to be.

  With such an attachment mode, the box-shaped cutout 5 is fixed to the beam member T with the opening 52 of the cutout main body 53 facing obliquely downward (at an angle of about 30 ° with respect to the vertical direction). It is like that.

  The beam material fixing bracket 8 according to the present embodiment is configured to function also as a bracket for attaching the lid support device 1. That is, the beam material fixing bracket 8 (the pair of bracket members 80 and 81) is not limited to the above-described through hole (the through hole through which the bolt B that fastens both the bolt fastening portions 81d) is inserted into the bolt fastening portion 81d. A through-hole (not numbered) for inserting a frame body 10 (frame connecting portion 100) described later of the body support device 1 is formed.

  The through hole for inserting the frame body 10 (frame connecting portion 100) provided in both the metal members 80 and 81 is in a state in which the beam material T is sandwiched between the metal members 80 and 81 (a state where the beam material T is fixed to the beam material T). ) And are concentric.

  The lid support device 1 according to the present embodiment is based on the mounting mode of the box-shaped cutout 5 as described above, and is fixed to the beam T on the rear side (back side) of the box-shaped cutout 5. The frame body 10 and the frame body 10 are rotatable about a rotation axis 105 extending in the substantially same direction as the extending direction of the pivot shaft (the pivot shaft pivotally mounted on the cutout body 53). And a rotating body 11 connected to each other.

  The frame body 10 includes a frame connecting portion 100 connected to the beam member fixing bracket 8, a frame main body portion 101 connected to the frame connecting portion 100, and a rotating body connecting portion connected to the frame main body portion 101. 102.

  The frame connecting portion 100 and the frame main body portion 101 are both formed in a rod shape, and in the present embodiment, they are integrally formed with a single bar material. The frame connecting portion 100 has a male screw portion 103 formed within a predetermined range on the front end side, and is inserted into a through hole of a bolt fastening portion 81d of a pair of metal fittings 80 and 81 sandwiching the beam T. The male threaded portion 103 is set to a length that protrudes upward from the one metal fitting member 80. The frame connecting portion 100 is provided with a hook-shaped positioning portion 104 that contacts the lower surface of the other metal member 81 in a state where the male screw portion 103 protrudes upward from the one metal member 80.

  The frame main body portion 101 is connected to the lower end of the frame connecting portion 100, and the pair of metal fitting members 80 in a state where the frame connecting portion 100 is inserted into the through holes of the bolt fastening portions 81 d of the pair of metal fitting members 80, 81. , 81 is formed so as to hang down below. In addition, as for the frame main-body part 101 which concerns on this embodiment, the lower end side is bent toward the front (the box-shaped cutout 5 side in the state fixed to the metal fittings 80 and 81).

  As shown in FIG. 3 (b), the rotating body connecting portion 102 includes a pair of shaft support portions 102a and 102b that are arranged to face each other with a predetermined interval therebetween. The shaft support portions 102a and 102b include a rotating body 11. A shaft hole (not numbered) through which the rotary shaft 105 is inserted is formed. The shaft hole is formed to extend (penetrate) in the same direction as the pivot shaft that pivotally attaches the lid body 55 to the cutout body 53 in a state where the frame body 10 is fixed to the beam member T.

  The rotating body 11 includes a first extending portion 110 that extends in a direction orthogonal to a direction in which the rotating shaft 105 extends from a connection position (the rotating body connecting portion 102) with the frame body 10, and the first extending portion 110. A first lid support portion 111 that extends substantially in the same direction as the rotating shaft 105 extends from the front side of the lid 55 that closes the opening 52 of the cutout body 53, and And a flexible elastic body portion 112 continuously provided at the distal end portion of the first extension portion 110.

  The first extension part 110 is formed in a rod shape, and an insertion part 113 inserted between the pair of shaft support parts 102a and 102b is provided at the base end part. The insertion portion 113 is formed with a shaft hole (not numbered) corresponding to the shaft hole of the pair of shaft support portions 102a and 102b. And after inserting the insertion part 113 between a pair of axial support parts 102a and 102b, the rotating shaft 105 is inserted in these axial holes. Thereby, the rotating shaft 105 is in a state straddling the pair of shaft support portions 102 a and 102 b, and the insertion portion 113 (rotating body 11) is rotatable around the rotating shaft 105.

  In the lid support device 1 according to the present embodiment, the frame body 10 is fixed immediately behind the box-shaped cutout 5. Accordingly, the first extension portion 110 includes a first extension frame portion 114 that extends from the rotating body connecting portion 102 (insertion portion 113) toward the box-shaped cutout 5 side, and the first extension frame portion. An inclined frame portion 115 inclined in the direction in which the rotation shaft 105 (rotation axis) of the rotating body 11 extends from the tip of 114, and a second extension extending in the same direction as the first extension frame portion 114 from the tip of the inclined frame portion 115. And a frame portion 116 so that the rotating body 11 can be prevented from interfering with the box-shaped cutout 5 during rotation.

  And the cover support apparatus 1 which concerns on this embodiment is insulation Y-co (refer Fig.4 (a)) with respect to the 1st extension part 110, as shown to Fig.3 (a) and FIG.3 (b). A gripping projecting piece 117 that can be gripped is extended. The gripping protrusion 117 is formed in a rectangular plate shape, and in the present embodiment, one end thereof is coupled along the second extending frame portion 116.

  The 1st cover body support part 111 which concerns on this embodiment crosses the front surface side of the cover body 55 so that it can interfere with the cover body 55 which is going to rotate around a pivot axis. The first lid support part 111 according to the present embodiment has a rod shape and is formed integrally with the first extension part 110.

  Then, at least one of the frame body 10 and the rotating body 11 (first extension portion 110), the first lid support portion 111 opens the lid body 55 with a predetermined opening (in this embodiment, 60 °). A restricting portion 106 that restricts the rotation of the rotating body 11 is provided at a position to be supported at the front and rear. The restricting portion 106 according to the present embodiment is fixed to the frame body 10 and is formed so that the rotating body 11 (first extending portion 110) interferes when the rotating body 11 rotates downward by a predetermined angle. Has been. That is, the restricting portion 106 is provided so as to receive the rotating body 11 (first extending portion 110) at a position where the rotating body 11 is rotated by a predetermined angle, and can be prevented from rotating downward. Yes. The restricting portion 106 according to the present embodiment is formed in a fan-like shape when front ends of two straight sides (sides corresponding to a radius) extending from the center are connected by an arc-like side. (One of the sides corresponding to the radius) is connected to the frame body 10 (the lower end of the frame main body 101). Thereby, the restricting portion 106 is fixed with the other side (the other side corresponding to the radius) extending forward, and receives the rotating body 11 (the frame main body portion 101) on the other side. It is like that.

  The elastic body portion 112 has a base end portion connected to a distal end portion of the first extension portion 110 and a second extension portion 118 that extends in a direction orthogonal to the direction in which the rotating shaft 105 extends, and the second extension portion. A second lid support portion 119 that extends from the protruding portion 118 in substantially the same direction as the rotation shaft 105 extends and can be inserted into the operation hole 57 is provided.

  The elastic body portion 112 has flexibility as a whole, and is formed of a rubber material in the present embodiment.

  The second extending portion 118 according to the present embodiment is formed so as to be inclined with respect to the first extending portion 110 in the rotation direction of the rotating body 11, and the lid support device 1 is box-shaped cutout. In a state of being fixed to the rear of 5, the tip end side is formed to be located closer to the box-shaped cutout 5 side than the tip end of the first extension portion 110. Thereby, an imaginary line (not shown) connecting the rotation center (rotating shaft 105) of the rotating body 11 and the tip of the first extension 110, and the tip of the first extension 110 and the second extension 118 A tentative line (not shown) that connects the tip and the rotation center (rotary shaft 105) of the rotating body 11 and the tip of the second extending portion 118 (center portion of the second lid support portion 119) ( (Not shown) defines a triangular area. And since the said elastic body part 112 has flexibility as a whole, the 2nd extension part 118 makes the rotation direction (1st extension part 110) of the rotary body 11 by making a base end side into a fulcrum. The second extending portion 118 can be tilted in the direction opposite to the direction in which the second extending portion 118 is tilted. Thereby, in a state where the second extending portion 118 is tilted, the rotation center (rotating shaft 105) of the rotating body 11 and the tip of the second extending portion 118 (in comparison with the normal state where the imaginary line defines a triangular area) The length of a tentative line (not shown) connecting the second lid support part 119) is increased.

  In the lid support device 1 according to the present embodiment, the gripping protrusions 120 that can be gripped by the insulating Y-shaped Y (see FIG. 4A) are also extended on the second lid support portion 119. The gripping projecting piece 120 is formed in a rectangular plate shape, and one end thereof is coupled along the second lid support portion 119. Needless to say, since the second lid support portion 119 is inserted into the operation hole 57 of the lid 55, the gripping protrusion 120 does not hinder insertion into the operation hole 57. As described above, the second lid support portion 119 is extended to the proximal end side.

  The lid support device 1 according to the present embodiment has the above-described configuration, and an insulating Y-cot Y shown in FIG. 4A is used for opening and closing the lid 55, and for replacing the fuse tube 54, An indirect hot wire operation rod Z shown in FIG. 4B is used.

  As shown in FIG. 4 (a), the insulating Yatco Y is provided at the base end portion of the rod-shaped main body Ya made of an insulating material having a gripping portion (not shown) at the base end portion, and at the front end portion of the main body Ya. A pair of separable sandwiching bodies Yb and Yb and an operation means Yc for bringing the pair of sandwiching bodies Yb and Yb into contact and separation are provided. The operating means Yc includes a lever (not shown) provided in a gripping part and an operating mechanism (not numbered) for operatively connecting the lever and the pair of sandwiching bodies Yb and Yb. By operating the lever with the hand holding the part, the pair of holding bodies Yb and Yb are brought into contact with and separated from each other, and the holding of the object and the release thereof can be switched.

  On the other hand, as shown in FIG. 4 (b), the indirect hot wire operation rod Z is a rod-shaped operation rod main body Za made of an insulating material, and a tip attached to or attached to the tip of the operation rod main body Za. It is comprised with the tool Zb. The tip tool Zb includes a slit portion S into which the connectors 54a and 54b of the fuse tube 54 can be press-fitted. In this embodiment, since the lid 55 is opened and closed using the insulating Y-cots Y, the tip tool Zb having only the slit portion S is used. Of course, it may be provided with a hook F formed so as to be inserted into the operation hole 57 of the lid 55 (projection piece 56) in addition to the conventional tip tool Zb described above, that is, the slit portion S.

  Next, the fixing method with respect to the beam T of the lid support device 1 according to the present embodiment and the operation of the lid support device 1 will be described.

  First, as shown in FIG. 3A, the box-shaped cutout 5 is mounted using the cutout mounting bracket 7 and the beam material fixing bracket 8. In the present embodiment, since the beam member fixing bracket 8 is also used as the fixing member of the lid support device 1 as described above, the bolt of the beam member fixing bracket 8 (metal member) attached to the beam member T is used. The frame body 10 (frame connecting portion 100) is inserted through the through holes formed in the fastening portions 80d and 81d from below. Then, as the positioning portion 104 of the frame connecting portion 100 abuts the lower metal member 81, the male screw portion 103 protrudes upward from the upper metal member 80, and the nut N The frame body 10 is fixed to the beam material T via the beam material fixing bracket 8.

  In this state, the frame body 10 is fixed on the rear side of the box-shaped cutout 5, and the rotating body 11 (first extending part 110) is rotated so that the first lid support part 111 is box-shaped. It will be in the state which can be arrange | positioned ahead of the cover body 55 of the cutout 5. FIG.

  Then, the rotating body 11 is rotated, the first lid support portion 111 is disposed on the front side of the lid body 55, and the elastic body portion 112 is bent (elastically deformed) together with the first lid support portion 111. The part 119 is inserted into the operation hole 57 of the lid 55. At this time, the first lid support portion 111 and the second lid support portion 119 are as described above by gripping the gripping protrusions 117 and 120 with the insulating Y-shaped Y and operating the insulating Y-shaped Y. To be placed.

  Then, the rotation of the lid 55 is restricted due to the difference between the rotation locus of the second lid support portion 119 and the rotation locus of the operation hole 57 of the lid body 55. That is, the difference between the rotation center of the rotating body 11 and the rotation center of the lid body 55, the distance from the rotation center of the rotating body 11 to the second lid support portion 119, and the operation hole 57 from the rotation center of the lid body 55. Therefore, the rotation of the lid 55 is restricted. Therefore, even if the fuse tube 54 is removed and the lid 55 becomes rotatable, the lid 55 is prevented from rotating carelessly and the open portion 52 of the cutout body 53 is prevented from being opened. be able to.

  On the other hand, if the lid 55 is forced to rotate, the elastic body portion 112 is bent and tilted as shown in FIG. 5, and the rotation fulcrum of the rotation body 11 and the distal end side of the second extension portion 118 ( The distance from the center of the second lid support part 119 is increased. As a result, even if the rotation trajectory of the second lid support portion 119 and the rotation trajectory of the operation hole 57 of the lid 55 are different from each other in the normal state, the second lid support is supported by the bending (elastic deformation) of the elastic body portion 112. The movement trajectory of the part 119 follows the rotation trajectory of the operation hole 57 of the lid 55, and each of the rotary body 11 and the lid 55 rotates to open the open part 52 of the cutout body 53.

  When the lid 55 reaches a predetermined opening (60 ° in the present embodiment), the rotation of the rotating body 11 is regulated by the regulating unit 106, and the first lid is in a state where the lid 55 is substantially horizontal. It will be in the state supported by the support part 111. FIG. Thereby, the lid body 55 holding the fuse tube 54 can be maintained at a predetermined opening degree. That is, when removing the fuse tube 54, the lid body 55 can be maintained in a posture in which the indirect hot wire operation rod Z can be easily operated.

  Then, as shown in FIG. 6, the connector 54a of the fuse tube 54 held by the lid 55 is press-fitted into the slit portion S of the indirect live wire operation rod Z, and the indirect live wire operation rod Z is moved in the axial direction. By doing so, the fuse tube 54 can be removed from the lid 55. In the present embodiment, as described above, in order to maintain the lid 55 in a substantially horizontal state, the indirect hot wire operation rod Z extends in the lateral direction when the fuse tube 54 is removed from the lid 55. Thus, the operation space for the indirect hot-wire operation bar Z is sufficiently secured. In addition, since the indirect hot wire operation rod Z extending in the lateral direction is operated in this way, the worker WM can remove the fuse tube 54 in an upright posture as shown in FIG.

  Then, after removing the fuse tube 54, when the lid 55 is rotated to close the opening 52 of the cutout body 53, the lid 55 is cut off from the cutout body 53, contrary to the case where the lid 55 is opened. As the opening portion 52 approaches the elastic body portion 112, the elastic body portion 112 rises by its own elasticity, and the lid body 55 finally closes the opening portion 52. Then, the difference between the rotation center of the rotating body 11 and the rotation center of the lid body 55, the distance from the rotation center of the rotating body 11 to the second lid support portion 119, and the rotation center of the lid body 55 to the operation hole. Therefore, the rotation of the lid 55 is restricted. Therefore, even if the fuse tube 54 is removed, the lid 55 does not rotate carelessly and the open portion 52 of the cutout body 53 is not opened. Although not specifically mentioned, the opening / closing operation of the lid 55 is performed by holding and pushing the gripping protrusions 117 and 120 with the insulating Y-cots Y, so that the worker WM is in a standing posture. The lid 55 can be opened and closed, and the attachment of the fuse tube 54 is the reverse of the above-described removal operation. Therefore, the worker WM can attach the fuse tube 54 in a standing posture. Further, even when the fuse tube 54 is attached, inadvertent opening of the lid 55 is more reliably prevented by the presence of the lid support device 1 as in the case where the fuse tube 54 is not present.

  As described above, the lid support device 1 according to the present embodiment can smoothly attach and detach the fuse tube 54, and furthermore, the lid body 55 without performing complicated work with the fuse tube 54 removed. It is possible to achieve an excellent effect that can be closed.

  In the present embodiment, since the rotating body 11 is provided with the gripping protrusions 117 and 120 that can be gripped by an insulating jacket, the lid 55 can be easily opened and closed.

  The lid support device for box-shaped cutout according to the present invention is not limited to the above embodiment, and can be appropriately changed without departing from the gist of the present invention.

  That is, in the above embodiment, the lid body 55 is opened in a state where the second lid body support portion 119 is inserted into the operation hole 57. However, the present invention is not limited to this. In the state where the rotation of the lid body 55 with the opening portion 52 closed by the one lid body support portion 111 and the second lid body support portion 119) is regulated, the second lid body support portion 119 is removed from the operation hole 57 and the lid body is removed. 55 may be opened. Specifically, when the second lid support portion 119 is removed from the operation hole 57, the rotating body 11 can rotate around the rotation shaft 105 and rotate until the rotation is restricted by the restriction portion 106. . Then, since the first lid support portion 111 and the second lid support portion 119 do not exist in front of the lid body 55, the lid body 55 can be rotated around the pivot shaft and the opening portion 52 can be opened. Become. When the lid body 55 is rotated, the lid body 55 is supported by the first lid body support portion 111 of the rotating body 11 that is first rotated and whose rotation is restricted at a predetermined angle. At this time, as shown in FIG. 8A, the lid 55 comes into contact with the second lid support 119 before the first lid support 111, but the second lid support 119 Since the elastic body portion 112 has one configuration, as shown in FIG. 8B, the elastic body portion 112 (mainly the second extending portion 118) is bent by the load of the lid body 55, and the lid body 55 is the first lid body. It will be supported by the support part 111 and the second lid support part 119. Therefore, even if it does in this way, when removing the fuse pipe | tube 54, the cover body 55 can be maintained in the attitude | position which is easy to operate the indirect hot wire operation stick | rod Z. FIG.

  In the above embodiment, the gripping projections 117 and 120 that can be gripped by the insulating Y-cots Y are extended to the first extending portion 110 and the second lid support portion 119, but the gripping projections 117 and 120 are provided. However, the present invention is not limited to this. For example, the gripping projecting pieces 117 and 120 are extended to the first lid support part 111 and the second extension part 118, or the first extension part 110 and the second extension part 118. The gripping protrusions 117 and 120 may be extended to any one of the one lid support part 111, the second extension part 118, and the second lid support part 119. That is, when the gripping protrusions 117 and 120 that can be gripped by the insulating Y-cots Y are provided, they may be provided at any location of the rotating body 11.

  Further, the lid support device 1 is not limited to the one provided with the gripping protrusions 117 and 120 that can be gripped by the insulating YAT Y, and the gripping protrusions 117 and 120 may be provided as necessary. Good.

  In the above embodiment, the elastic body portion 112 is formed of a rubber material. However, the elastic body portion 112 is not limited to this. For example, the elastic body portion 112 may be formed of other flexible resin material or spring material. Good.

  In the said embodiment, the 1st extension part 110 of the rotary body 11 is comprised by the 1st extension frame part 114, the inclination frame part 115, and the 2nd extension frame part 116, and the rotary body 11 cuts a box shape at the time of rotation. However, the present invention is not limited to this. For example, as shown in FIG. 9A, the first extension extending toward the box-shaped cutout 5 is formed on the frame body 10. A box-shaped frame that is connected to the exit frame portion 101a, the tip end of the first extension frame portion 101a, and is inclined to the extending direction of the rotation shaft 105, and the tip end of the tilt frame portion 101b. A second extending frame portion 101c extending toward the cutout 5 and a rotating body connecting portion 102 connected to the tip of the second extending frame portion 101c are provided, and the first extending portion 110 of the rotating body 11 is provided. Straight It may be formed on the ingredients. Further, as shown in FIG. 9B, the fixing position of the frame body 10 is shifted from behind the box-shaped cutout 5 in the direction in which the rotation shaft 105 extends, so that the frame body 10 and the rotation body 11 (the first extending portion 110 and Of course, the second extending portion 118 may be formed so as to extend straight to the box-shaped cutout 5 side (front) in a plan view. Therefore, the rotation of the rotating body 11 is not hindered (interfering with the box-shaped cutout 5), and the rotating body 11 can be rotated smoothly and appropriately.

  In the above embodiment, the restricting portion 106 is provided on the frame body 10 side. However, the present invention is not limited to this. For example, the restricting portion 106 may be fixed on the rotating body 11 side. In this way, when the rotating body 11 is rotated, the restricting portion 106 also rotates in the same manner. When the rotating body 11 rotates by a predetermined angle, the restricting portion 106 interferes with the frame body 10 and rotates. Can be prevented from rotating more than necessary. Further, the restricting portion 106 may be provided on both the frame body 10 and the rotating body 11. In this way, when the rotating body 11 rotates by a predetermined angle, the restricting portion 106 attached to the frame body 10 interferes with the rotating body 11, and the restricting portion 106 attached to the rotating body 11 becomes in contact with the frame body 10. It will interfere, and it can prevent that the rotary body 11 rotates more than necessary.

  In the said embodiment, although demonstrated for the box-shaped cutout 5 which installed the opening part 52 toward diagonally downward, it is not limited to this, The box installed with the opening part 52 facing a horizontal direction The shape-shaped cutout 5 or the box-shaped cutout 5 in which the opening portion 52 is installed obliquely upward may be targeted. However, in any case, the frame body 10 is fixed on the rear side of the box-shaped cutout 5 (the side opposite to the side on which the opening portion 52 of the cutout body 53 is formed), and the first lid support portion 111 and Of course, the second lid support portion 119 can be positioned on the front side of the lid 55.

  Moreover, in the said embodiment, although the box-shaped cutout 5 and the cover body support apparatus 1 were fixed to the beam material T, it is not limited to this, For example, the box-shaped cutout 5 and the cover body support apparatus 1 are used. You may make it fix to the support | pillar P, you may fix either the box-shaped cutout 5 or the cover body support apparatus 1 to the beam T, and you may fix the other to the support | pillar P. That is, the fixed positions of the box-shaped cutout 5 and the lid support device 1 may be set according to these layouts.

  In the above embodiment, the beam member fixing bracket 8 for fixing the box-shaped cutout 5 to the beam member T is also used as the fixing member of the lid support device 1. However, the present invention is not limited to this. A metal fitting independent of the material fixing metal fitting 8 may be adopted as the metal fitting for fixing the lid support device 1. In addition, the lid support device 1 is not limited to the one that is fixed using the metal fittings, and may be fixed directly to the beam member T or the column P, for example. That is, when the frame connecting part 100 is formed in an axial shape as in the above-described embodiment, and the male screw part 103 and the positioning part 104 are provided in the frame connecting part 100, a through hole is formed in the beam member T or the column P. Then, the frame connecting portion 100 may be inserted into the through hole, and the nut N may be screwed into the male screw portion 103 to be fixed to the beam member T or the column P.

  DESCRIPTION OF SYMBOLS 1 ... Lid support apparatus (lid support apparatus for box-shaped cutout), 5 ... Box-shaped cutout (switch), 6 ... Transformer (transformer), 7 ... Cut-out mounting bracket, 8 ... Fixed beam material Metal fitting, 10 ... Frame body, 11 ... Rotating body, 50 ... First connection terminal, 51 ... Second connection terminal, 52 ... Opening part, 53 ... Cutout body, 54 ... Fuse tube, 54a, 54b ... Connector, 55 ... Lid, 56 ... Projection piece, 57 ... Operation hole, 70, 71 ... Mounting piece, 80, 81 ... Metal fitting member, 80a ... Upper surface facing portion, 80b ... Side facing portion, 80c ... Connection portion, 80d ... Bolt fastening , 81a ... lower surface facing part, 81c ... connecting part, 81d ... bolt fastening part, 100 ... frame connecting part, 101 ... frame body part, 101a ... first extension frame part, 101b ... inclined frame part, 101c ... second Extension frame portion, 102... Roller connecting part, 102a, 102b ... shaft support part, 103 ... male screw part, 104 ... positioning part, 105 ... rotating shaft, 106 ... regulating part, 110 ... first extension part, 111 ... first lid support part , 112 ... elastic body part, 113 ... insertion part, 114 ... first extension frame part, 115 ... inclined frame part, 116 ... second extension frame part, 117 ... gripping protrusion, 118 ... second extension Part, 119 ... second lid support part, 120 ... gripping piece, B ... bolt, F ... hook, L ... ridgeline, L1 ... primary power system, L2 ... secondary power system, N ... nut, P ... post, R ... transformer room, S ... slit part, T ... beam material, TF ... transformer equipment, WM ... worker, Y ... insulator, Ya ... main body, Yb, Yb ... clamping body, Yc ... operating means, Z: Indirect hot line operation rod, Za: Operation rod body, Zb ... Tip tool

Claims (2)

  A box-shaped cutout body in which a first connection terminal connected to the primary power system and a second connection terminal connected to the secondary power system are internally provided, and an open portion leading to the inside and outside is formed on one surface; A lid that is pivotally attached to the cutout body to open and close the open part of the cutout body and configured to hold the fuse tube, and a direction in which the pivoting shaft that pivotally attaches the lid to the cutout body extends And an operation hole penetrating in substantially the same direction is formed in the lid, and when the lid is closed, each connector of the fuse tube is electrically connected to the first connection terminal and the second connection terminal, and the lid A lid support device for a box-shaped cutout, which is configured to maintain the body in a state in which an open portion is closed, and is attached to a column or a beam provided in a transformer room of a building, the box-shaped cut The frame is fixed to the column or beam at the rear side of the out. A rotating body connected to the frame body so as to be rotatable about a rotation axis extending in a direction substantially the same as the direction in which the pivot shaft extends. A first extending portion extending in a direction perpendicular to the direction in which the rotating shaft extends, and extending from the first extending portion in substantially the same direction as the extending direction of the rotating shaft, and closing the open portion of the cutout body A first lid support portion provided so as to be able to face the front side of the lid body, and a flexible elastic body portion connected to the tip end portion of the first extension portion, and a frame body, At least one of the rotating bodies includes a defining portion that regulates rotation of the rotating body at a position where the first lid support section supports the lid body with a predetermined opening degree, and the elastic body section has a base end A second extension portion connected to a tip portion of the first extension portion and extending in a direction orthogonal to a direction in which the rotating shaft extends; A box-shaped cutout characterized by comprising a second lid support portion extending from the second extension portion in substantially the same direction as the direction of extension of the rotary shaft and insertable into the operation hole. Lid support device.   The lid support device for box-shaped cutout according to claim 1, wherein the rotating body includes a gripping protrusion piece that can be gripped by an insulating jacket.

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