JP2014222957A - Base for preventing housing overturn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a base for preventing housing overturn, which easily and securely fixes a housing as for a control board before it is installed in an installation place, and which prevents overturn of the housing even when vibration occurs due to earthquake or the like.SOLUTION: A base for preventing housing overturn comprises: a base body 13 of a predetermined length, on which a housing A accommodating various electric machines is placed; and a fixing mechanism for screwing the housing A on a base body 13. The base body 13 has at least an upper face plate 20 and side plates 21 extending downward from both end parts of the upper face plate 20. The fixing mechanism includes a long hole 23 made to face stop holes 11a, 11b formed in the lower end part of the housing A when the housing A that is open along a length direction thereof is placed on the upper face plate 20 of the base body 13; a surrounding rails 15 provided below the long hole 23, the surrounding rails surrounding a male screw member or female screw member from both sides such that the member is not rotatable, and supporting the male screw member or female screw member along the long hole 23 such that the member is slidable; and an insertion part 24 formed in part of the long hole 23 and wider than the long hole 23 for inserting the male screw member or female screw member into the surrounding rail 15.

Description

  The present invention relates to a housing overturn prevention base that fixes a housing in which various housings, such as a control panel and a distribution board, are stored so that the housing does not fall over.

  Generally, when installing a housing containing various electrical equipment such as a control panel at the installation location, the channel base is fixed to the floor surface with anchor bolts in advance, and then the control panel is placed on the channel base. Thus, the control panel and the channel base are fastened and fixed with bolts or the like. And, since the fixing by such a general method, especially the channel base is fixed to the floor surface by anchor bolts, the control panel itself basically collapses even if a large shake due to an earthquake or the like occurs. There is nothing.

JP 2005-26460 A JP 2001-275212 A

  As described above, the control panel after it is installed at the installation site is firmly fixed at the installation site. However, before the installation, that is, when the control panel is assembled, any countermeasures should be taken. The current situation is that it has not been adopted. Specifically, when assembling the control panel, first, prepare a chassis in the factory, and the terminal block for connecting electrical equipment and cables for control manually by the operator from the front of the chassis. Various electrical devices such as connectors will be assembled. At this time, the casing is simply placed on the floor, and no measures against falling are taken. When various electric devices are incorporated in the housing, the weight may be at least 100 kg, and may reach 1 t when a heavy object is used. Therefore, if a large earthquake occurs and the factory shakes greatly during assembly of such a heavy control panel, the control panel falls to the operator side due to the shaking, and the operator is heavy. There is also a possibility that serious accidents such as underlaying the control panel may occur. Therefore, it is desirable to take some measures to prevent the control panel from overturning even during assembly of the control panel as a means to prevent such an accident.

  In view of the above-described problems, the present invention simply and reliably fixes a housing such as a control panel before being installed at an installation location, and the housing falls down even if a shake due to an earthquake or the like occurs. An object of the present invention is to provide a pedestal for preventing overturning of the casing so as not to occur.

  In order to achieve such an object, the present invention comprises a pedestal body having a predetermined length on which a housing for storing various electrical devices is placed, and a fixing mechanism for screwing the housing onto the pedestal body. The pedestal main body includes at least an upper surface plate and side plates extending downward from both end portions of the upper surface plate, and the fixing mechanism is established in the longitudinal direction on the upper surface plate of the pedestal main body and mounts the casing. A long hole that is opposed to a stop hole that is opened at the lower end of the housing, and the male screw member or the female screw member that is provided below the long hole so as not to rotate from both sides and An enclosure rail that slidably supports the female screw member along the elongated hole, and an elongated hole that is formed in a part of the elongated hole and that is used to insert the male screw member or the female screw member into the enclosure rail. Is also characterized by comprising a wide insertion portion. The “casing” here mainly refers to a control panel or a switchboard in which various electrical devices are housed, and also refers to the control panel itself or below the control panel and the control panel. Includes both fixed bases such as channel bases.

  Moreover, it is preferable that an adjuster for fixing the pedestal main body in an immobile state with respect to the floor surface is provided in the vicinity of both ends of the pedestal main body. By doing in this way, it becomes possible to prevent the casing from falling over more reliably.

  Furthermore, it is preferable to provide casters that allow the pedestal main body to move in the vicinity of both ends of the pedestal main body. In other words, conventionally, in order to move a heavy casing in a factory where assembly work is performed, a large-scale transfer means such as a crane has been required. It can be moved freely, and there is no need to provide a large transport means.

  According to the casing overturn prevention pedestal according to the present invention, even if the factory is shaken greatly due to an earthquake or the like during assembly of the casing such as the control panel, the heavy casing is on the assembly operator side. It is possible to prevent serious accidents such as the operator falling down and the operator underlaying the control panel.

The perspective view which shows the state which mounted and fixed the housing | casing on the base for fall prevention. The horizontal sectional view which shows the state which mounted and fixed the housing | casing on the base for fall prevention. The top view of the base for fall prevention. The bottom view of the fall prevention base. The front view of the base for fall prevention. The side view of the base for fall prevention. The perspective view of a nut plate (female screw member) and the longitudinal cross-sectional view which shows the state which fixed the housing | casing and the base for fall prevention. The top view and front view of a bolt plate (male screw member). The perspective view which shows the state which mounted and fixed the housing | casing of other embodiment on the base for fall prevention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a casing fall prevention pedestal (hereinafter referred to as “falling prevention pedestal”) according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a state where the casing is placed and fixed on a fall prevention pedestal, FIG. 2 is a horizontal sectional view showing a state where the case is placed and fixed on a fall prevention base, and FIG. FIG. 4 is a bottom view of the tumbling prevention pedestal, FIG. 5 is a front view of the tumbling prevention pedestal, and FIG. 6 is a side view of the tumbling prevention pedestal. In addition, the housing | casing A in this embodiment is comprised from the control board 1 and the mount frame 2 fixed below the control board 1. FIG. Further, the casing A is placed so as to straddle two fall prevention bases B arranged in parallel, and the fall prevention base B so that the longitudinal direction of the fall prevention base B and the front surface of the casing A are orthogonal to each other. It is fixed to.

  The control panel 1 is formed in a square box shape by the ceiling plate 3, the rear wall 4, and the side walls 5, 5, and the front door 7 can be opened and closed to the right side wall 5 via hinges 6, 6. Although not shown, an electrical device for control, a terminal block for connecting a cable, a connector, and the like are accommodated therein.

  The gantry 2 has two frames 8 and 8 which are L-shaped steel frames in a rectangular shape and are arranged on the front and rear sides, side wall plates 9 and 9 are mounted on the left and right sides, respectively, and the rear wall plate 10 is mounted on the rear side. By mounting, it is formed in a box shape. On the other hand, the wall plate is not provided on the front side and the lower side of the gantry 2 and is open. Then, bolts 45 as male screw members used when fixing the casing A to the fall prevention pedestal B are inserted into the left and right sides of the inward flange portions 8a and 8a at the lower ends of the front and rear frames 8 and 8, respectively. A total of four stop holes 11 are formed at two locations. The casing A shown in FIG. 1 and FIG. 2 is an assembly work that has not yet been installed at the place where it should be installed, and the front side of the gantry 2 shown here is opened. In this state, after the assembly of the control panel 1 is completed, a front decorative plate that is flush with the front door 7 of the control panel 1 is mounted, although not shown.

  The fall prevention pedestal B includes a pedestal main body 13, an enclosure rail 15 on which a nut plate 14 as a female screw member is supported, casters 16 and 16 for moving the pedestal main body 13, and a lower portion of the pedestal main body 13. A reinforcing plate 17 for closing the center and adjusters 18 and 18 for fixing the pedestal main body 13 to the floor surface are roughly constituted.

  The pedestal main body 13 is formed in a downward U-shape comprising an upper surface plate 20 and side plates 21 and 21 by bending the left and right sides of a flat steel material having a predetermined length vertically downward. The bent piece portions 22 are formed by slightly bending the lower ends of the 21 and 21 inward. Further, the upper surface plate 20 is formed with a long hole 23 formed in the center in the width direction along the longitudinal direction, and is inserted into the center portion in a substantially rectangular shape having a width wider than the width of the long hole 23. Department 24 is established. Further, tightening holes 25 into which wrench are inserted when tightening nuts of adjusters 18 and 18 to be described later are formed in both end portions of the upper surface plate 20, respectively. Further, the side plate 21 on one side is provided with a handle 26 for transportation.

  An enclosure rail 15 is mounted on the back surface side of the top plate 20 of the pedestal main body 13 and below the long hole 23 so as to cover the long hole 23 from below. The enclosure rail 15 is for sliding a nut plate 14 as a female screw member, which will be described later, and the center in the width direction of the belt-like plate having substantially the same length as the long hole 23 is recessed in the longitudinal direction. It is formed by. That is, the enclosure rail 15 has horizontal mounting plate portions 30 and 30 on both the left and right sides, and a concave groove 31 is formed between the mounting plate portions 30 and 30. Further, both end portions along the longitudinal direction of the bottom surface of the concave groove 31 are extended in a piece shape, and the nut plate 14 sliding in the concave groove 31 falls off by bending the extended portion upward. A retaining portion 32 is formed to prevent this. Further, two elongated holes 33 are formed on the bottom surface of the groove 31 on both sides in the longitudinal direction. And the insertion part 24 established in the upper surface board 20 of the base main body 13 will be located above the part in which the hole between these two long holes 33 and 33 is not opened. The inner side of the side walls of the groove 31 is substantially the same as the width of the nut plate 14. More precisely, the inner side of the groove 31 is slightly wider than the width of the nut plate 14. And the enclosure rail 15 which consists of such a structure welds the attachment board parts 30 and 30 to the back surface of the upper surface board 20, and the groove 31 of the enclosure rail 15 and the long hole 23 of the upper surface board 20 face each other. Has been attached to. In addition, casters 16 capable of rotating 360 degrees are attached to the back surface side of the upper surface plate 20 of the pedestal main body 13 and on both sides in the longitudinal direction of the enclosure rail 15.

  As shown in FIG. 7, the nut plate 14 that slides the concave groove 31 of the enclosure rail 15 has a U-shaped cross-section with a rectangular base 34 and side pieces 35 and 35 integrally formed. The base 34 is provided with a bolt insertion hole 36. A nut 37 is welded and fixed to the lower surface of the base portion 34 so as to be continuous with the bolt insertion hole 36.

  A flat plate-like reinforcing plate 17 and flat plate-like connecting plates 39, 39 that are part of the adjusters 18, 18 are welded to the bent piece portions 22, 22 at the lower end of the pedestal main body 13. That is, the wheels of the casters 16 and 16 mounted on the back surface of the top plate 20 protrude at the lower end of the pedestal main body 13, but the reinforcing plate 17 is mounted so as to fit between the wheels of the casters 16 and 16. Connecting plates 39, 39 are mounted on both sides of the wheels of the casters 16, 16 (both ends in the longitudinal direction of the lower end of the base body 13). By means of the reinforcing plate 17 and the connecting plates 39, 39, the overturning prevention pedestal B has a hollow rectangular tube shape as a whole except for the part where the wheels of the casters 16, 16 protrude from the lower end of the pedestal main body 13. . The connecting plate 39 is formed with an adjuster 18 including the connecting plate 39. That is, a screw insertion hole 40 is formed in the connection plate 39, and a fixing nut 41 is welded and fixed to the upper surface of the connection plate 39 so as to be continuous with the screw insertion hole 40. Further, an adjuster bolt 42 is screwed into the screw insertion hole 40 and the fixing nut 41, and a circular contact body 43 that contacts the floor surface is provided at the lower end of the adjuster bolt 42. A tightening nut 44 is fixed to the upper end of the adjuster bolt 42 by welding. Then, by rotating the tightening nut 44 and screwing the adjuster bolt 42, the contact body 43 presses the floor surface, and the fall prevention base B can be fixed to the floor surface in an immobile state.

  Next, a method of using the fall prevention pedestal B configured as described above will be described. Note that the fall prevention pedestal B is used mainly when the casing A is assembled. First, two fall prevention bases B are prepared, and these two fall prevention bases B are arranged in parallel to the floor surface. Next, the casing A is placed on the two fall prevention bases B so that the longitudinal direction of the fall prevention base B and the front surface of the case A are orthogonal to each other. At this stage, since the electrical equipment, terminal blocks, connectors, and the like are not yet stored in the housing A, the housing A is relatively light and is lifted by the assembling operator of the housing A to the fall prevention pedestal B. Can be placed. After the casing A is placed on the fall prevention pedestal B, this time, the lower portion of the casing A, specifically, the bottom flanges 8a and 8b at the lower ends of the frames 8 and 8 at the front and rear of the gantry 2 are stopped. The positional relationship between the fall prevention pedestal B and the housing A is adjusted so that the hole 11 and the long hole 23 of the top plate 20 of the fall prevention pedestal B match. Next, four nut plates 14 are prepared, and one of the prepared four nut plates 14 is inserted in the upper surface plate 20 of the base B for tipping prevention with its base 34 facing up. 24, and the upper part of the inserted nut plate 14 is positioned directly below the stop hole 11a formed in the downward flange 8a of the pedestal 2 by using a finger from the long hole 23 of the top plate 20 of the fall prevention base B. To move. At this time, the nut plate 14 slides in the recessed groove 31 of the enclosure rail 15 disposed on the lower surface of the upper surface plate 20, and the inner method of the recessed groove 31 and the width of the nut plate 14 are substantially the same. Since they coincide with each other, the nut plate 14 can be moved to the stop hole 11 a without rotating in the concave groove 31. When the movement of the nut plate 14 is completed, the bolt 45 is inserted from the retaining hole 11a of the downward flange 8a of the gantry 2 and the bolt 45 is fastened and fixed. Next, another nut plate 14 is inserted from the insertion portion 24 of the upper surface plate 20, and the nut plate 14 is moved to the opposite side, that is, to a position directly below the stop hole 11b formed in the downward flange 8b of the gantry 2. Then, the bolt 45 is inserted from the stop hole 11b, and the bolt 45 is tightened and fixed. By performing such an operation also on the other fall prevention pedestal B, the lower end portion of the casing A and the fall prevention pedestal B are fixed at four locations. Finally, when a wrench is inserted into the tightening holes 25 provided on both sides of the upper surface plate 20 of the fall prevention pedestal B and the adjuster bolt 42 of the adjuster 18 is screwed, the contact body 43 of the adjuster 18 is fixed to the floor surface. Thus, the fall prevention pedestal B becomes immovable with respect to the floor surface. Therefore, even if a large shake due to an earthquake or the like occurs during the assembly work of the housing A, the housing A does not fall down, and the worker can assemble the housing A with peace of mind.

  FIG. 8 shows a bolt plate as a male screw member. That is, in the fall prevention base B according to the present invention, the bolt plate 50 can be used instead of the nut plate 14 shown in the above embodiment. The bolt plate 50 is a U-shaped plate with a rectangular base 51 and a side piece 52 integrally formed. The bolt 53 is fixedly welded to the center of the base 51. A sheet-like magnet 54 is attached to the lower surface of the base 51. And the bolt plate 50 is used with respect to the base B for fall prevention as follows. That is, first, the bolt plate 50 is inserted with the base 51 facing downward from the insertion portion 24 provided in the upper surface plate 20 of the fall prevention pedestal B, and the shaft portion of the bolt 53 of the inserted bolt plate 50 is grasped. Is moved in the recessed groove 31 of the enclosure rail 15 and moved to the vicinity of the stop hole 11a formed in the downward flange 8a of the gantry 2. At this time, since the inner method of the concave groove 31 and the width of the bolt plate 50 substantially coincide with each other, the bolt plate 50 can be moved to the stop hole 11a without rotating in the concave groove 31. . Next, the shaft portion of the bolt 53 is inserted into the retaining hole 11 a of the gantry 2 while slightly lifting one side of the gantry 2. When the shaft portion of the bolt 53 is inserted into the stop hole 11a, the magnet 54 is attached to the lower surface of the base portion of the bolt plate 50. Therefore, the bolt plate 50 is fixed to the concave groove 31 to some extent and does not wobble. Can be inserted easily. After that, the nut may be fastened and fixed to the shaft of the bolt 53 protruding upward from the stop hole 11a. Then, by performing such an operation on the other fall prevention pedestal B, the lower end of the casing A and the fall prevention pedestal B are fixed at four locations.

  In addition, since the caster 16 is provided in the fall prevention pedestal B, when the fall prevention stand B is not fixed to the floor surface by the adjuster 18, the casing A is placed and fixed. It can be moved freely and can enjoy the following advantages. In other words, when moving the casing A in which electrical equipment or the like has been accommodated to some extent at the assembly work site of the casing A, the casing A is quite heavy and moved using a crane or the like. Although it had to be made, the housing | casing A can be moved without doing such a big thing. Also, when loading the chassis A that has been assembled on a truck or the like, the wheels of the casters 16 create a gap between the floor and the lower end of the fall prevention pedestal B, so that the fork of the forklift is placed in the gap. Thus, the casing A can be lifted together with the fall prevention pedestal B, and the casing A can be easily loaded on a truck or the like. On the other hand, it becomes easy to lower the housing A after being transported by a truck or the like from the truck or the like. Further, when the casing A lowered from a truck or the like is moved to the installation location, the casing A can be moved very easily because the casters 16 are provided on the fall prevention base B. In addition, since the dimension in the longitudinal direction of the fall prevention pedestal B is longer than the dimension in the depth direction of the casing A (the one shown in this embodiment is about three times as long), the fall prevention pedestal B Even in a state in which the casing A is not fixed by the adjuster 18, the possibility that the casing A fixed to the fall prevention pedestal B will fall is low.

  FIG. 9 shows another method of using the fall prevention pedestal B according to the present invention. In FIG. 9, the same components as those in the above embodiment are given the same reference numerals. The casing A shown in FIG. 9 is of a type in which no gantry is provided below the control panel 1, and the casing A, that is, an L-shape consisting of a vertical part and a horizontal part at the four corners of the side lower end of the control panel 1. A metal fitting 60 is attached. Specifically, the vertical portion of the L-shaped metal fitting 60 is fixed to the control panel 1 with bolts 61, and the horizontal portion is positioned to extend outward. Stop holes 11a and 11b are formed in the horizontal portion. Bolts 45 are inserted into the stop holes 11a and 11b, and the bolts 45 are screwed into the nut plate 14 in the enclosure rail 15 of the base body 13. By wearing it, the control panel 1 (housing A) can be fixed to the fall prevention base B.

  The fall prevention pedestal according to the present invention is configured as described above. However, if a scale is provided on the top plate 20 of the fall prevention pedestal B, the female inserted into the enclosure rail 15 of the fall prevention pedestal B is provided. It is possible to easily grasp the stop position when the screw member or the male screw member is moved. That is, when the housing A is placed on the fall prevention pedestal B, if the place where the stop hole of the gantry is located is confirmed in advance, the female screw member or the male screw member is moved to the confirmed scale. It is sufficient to move them, and positioning of these members can be easily performed.

  In addition, although the pedestal main body of this embodiment showed the example provided so that a side board may hang from an upper surface board, a side board is not necessarily restricted to what is extended perpendicularly from an upper surface board, It may extend diagonally downward from the top plate. Furthermore, the pedestal main body of the present embodiment is formed in a U-shaped cross section by the upper surface plate and the side plates on both sides thereof, and is formed by attaching a reinforcing plate to the lower end thereof, but the reinforcing plate must always be attached. Do not mean. Further, the pedestal main body includes one formed in a rectangular tube shape. In short, the pedestal body according to the present invention only needs to have at least a top plate and a side plate. Furthermore, in the present embodiment, an example in which the insertion portion for inserting the nut plate is provided at the center of the long hole, but the insertion portion does not necessarily have to be provided at the center of the long hole, It is sufficient if it is provided in any part of the long hole.

  Furthermore, in the said embodiment, the example which inserts in the insertion part established in the upper surface board 20 of the base B for fall prevention as a usage method of the nut plate as a female screw member with the base part of a nut plate facing up is shown. However, the nut plate can be used by being inserted into the insertion portion with the base portion of the nut plate facing down. In this case, if a magnet is stuck on the outer surface of the base portion of the nut plate, the nut plate is fixed at a predetermined position in the recessed groove of the surrounding rail, and workability can be improved. Further, in the above embodiment, a nut plate is used as an example of the female screw member, but it is not necessarily limited to this, for example, if it has a width that does not rotate within the recessed groove of the enclosure rail, It is also possible to substitute a normal nut.

A Case 13 Base body 14 Nut plate (female screw member)
15 Enclosure Rail 16 Caster 18 Adjuster 20 Top Plate 21 Side Plate 23 Long Hole 24 Insertion Port 50 Bolt Plate (Male Screw Member)

Claims (3)

A pedestal main body of a predetermined length on which a housing for storing various electrical devices is placed, and a fixing mechanism for screwing the housing onto the pedestal main body,
The pedestal body includes at least a top plate and side plates extending downward from both end portions of the top plate,
The fixing mechanism is a long hole which is opened along the longitudinal direction on the upper surface plate of the pedestal main body and is opposed to a stop hole which is opened at the lower end of the case when the case is placed;
An enclosure rail that is provided below the long hole and surrounds the male screw member or the female screw member so as not to rotate from both sides, and supports the male screw member or the female screw member slidably along the long hole;
A pedestal for preventing overturning of a casing, comprising: an insertion portion that is formed in a part of the long hole and is wider than the long hole for inserting the male screw member or the female screw member into the enclosure rail.   The pedestal for preventing overturning of a casing according to claim 1, wherein an adjuster for fixing the pedestal main body in an immobile state with respect to the floor surface is provided near both ends of the pedestal main body.   3. A pedestal for preventing overturning of a casing according to claim 1, wherein casters are provided in the vicinity of both ends of the pedestal main body to allow the pedestal main body to move.

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