JP2002171620A - Simplified changing device for instrument transformer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simplified changing device by which an instrument transformer can be changed safely and easily by at least two persons. SOLUTION: The device comprises a pair of parallel guide members 1, a plurality of hanging support units 2, a hanging frame members 3 and at least two movable units 4. A pair of the above guide members 1 are attached to a horizontal frame body 20a so that the guide members 1 can be freely fabricated or detached with the plurality of the hanging support units 2. The existing instrument transformer 10 is moved to the outside of a main frame cradle with the movable units 4. Then the above instrument transformer is put down on the ground 30d with the above hanging members 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple instrument transformer replacement device that allows at least two persons to safely and easily replace a transformer for an instrument.

[0002]

2. Description of the Related Art There is no prior-art instrument transformer simple replacement device, and the existing existing instrument transformer (10) such as a high-voltage instrument transformer (VCT) is stored in a suspended state. As shown in FIG. 4, both ends of a horizontal frame main body (20a) having a rectangular cross section are provided below the upper frame (30a) in the main frame base (30), which is also called a cubicle such as an existing high-voltage power receiving facility. Two hanging horizontal plate members (40a) are horizontally bridged above the horizontal frame main body of a hanging support frame member (20), which is also hung in the direction of the openable opening of the frame base. Elongated suspension holes (1) provided at the four corners near the top of the instrument transformer
0a), the other end of the suspension bolt (40) is supported by a double nut on both ends of the suspension horizontal plate member facing each other, and between the lower part of the horizontal frame body and the upper part of the instrument transformer, Wooden spacers (40b) having a predetermined thickness to maintain horizontality
Was inserted and suspended.

[0003] Replacement of the existing instrument transformer according to the prior art requires a weight of about 60 to 10 meters.
Since it is relatively heavy at 0 kg, it requires at least three workers and uses a work tool such as a wire or a chain block, and is mainly manually operated inside the main frame base (30) and the lower frame (30c). The instrument transformer was lowered above and the replacement work was performed.

[0004]

The replacement work of the prior art instrument transformer requires at least three workers,
Using the work tool, the instrument transformer was lowered onto the lower frame inside the main frame base mainly by hand, and the replacement work was performed. When working inside the main frame base, various electric components and wiring such as transformers and capacitors are often installed on the lower frame, which limits the work space and threatens safety. There was a problem.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an instrument transformer simple replacement device of the present invention comprises a pair of parallel guide members, a plurality of suspension units, a fishing frame member,
It is composed of at least two movable units, and a pair of the guide members are mounted on the horizontal frame body using the plurality of suspension units so as to be freely assembled and released. The container to the outside of the main frame base,
The instrument transformer is lowered to the ground surface by using the fishing frame member.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an instrument transformer according to the present invention.
It consists of a fishing frame member and at least two movable units, and is also called a cubicle such as an existing high-voltage power receiving facility.
The horizontal frame body of a suspension frame member, also referred to as a suspension table, in which both ends of a horizontal frame body having a rectangular cross section are hung below the upper frame in the main frame frame in the direction of an openable and closable opening of the main frame frame. Under,
Metal instrument transformer simple replacement device used for new replacement of existing instrument transformers such as high-voltage instrument transformers (VCT) suspended using mounting members consisting of suspension bolts etc. Wherein the suspension unit has means for connecting the upper and lower portions of both side plates that sandwich the rectangular frame body at a plurality of locations in a U-shape by opposing the side surfaces of the rectangular cross section, respectively, such that they can be assembled to each other. , A connecting plate, and the pair of guide members are arranged such that one side of the L-shaped guide member faces upward,
The other outer side is symmetrically fixed to the lower part of both side plates of each of the suspension units, and a rail body is disposed on each of the upwardly outer sides, and the length of each of the guide members is horizontal. The fishing frame member has a predetermined length, which is provided at the back of the frame main body and extends sufficiently from the suspension support unit to the outside in the opening direction of the main frame base.
A bridged fishing rod is supported on the upper portion between the pair of guide members near the outer end in the opening direction, and the upper hook of the chain block is locked to the rod, and the lower hook is moved downwardly between the guide members. The movable unit has a mechanism which can be operated up and down freely, and the movable unit has wheels mounted on the inner sides of a pair of plate-shaped main bodies, respectively, and a center concave portion of the wheel is slidably and loosely fitted to the rail main body. A mechanism is provided for protruding inside the central portions of both the main bodies, a mechanism for constantly pressing the outer wall of the guide member slidably at a tip end thereof, and a horizontal frame member is provided under the main bodies, and the horizontal frame is provided. In the vicinity of both ends of the member, a height adjustment bolt is provided on the horizontal frame member, and a hanging bracket unit extending downward is provided.

In the instrument transformer simple replacement device of the present invention, a metal round bar member may be used as the rail body of the guide member and may be welded to the upper surface of the guide member.

[0008] In the instrument transformer simple replacement device of the present invention, a rotatable hard sphere is provided at the tip end as a vibration damping member via a bearing, and the hard sphere tip always slides on the outer wall of the guide member. It is also possible to adopt a mechanism for freely pressing.

The means for connecting the upper and lower portions of both side plates of the suspension support unit for holding the horizontal frame body in a U-shape to one another at the end of the connecting plate in the instrument transformer simple replacement device of the present invention. Is attached to the upper and lower horizontal ends of the side plate by means of bolts or the like so as to be freely rotatable horizontally, a hook recess is provided at the other end of the connecting plate, and a loose fit is provided on the bolt provided at the horizontal end of the opposite side plate. Alternatively, the other end of the connecting plate may be fixed at a predetermined position with the bolt, and the connecting plate may be connected to be freely assembled.

[0010] In the method of using the instrument transformer simple replacement device of the present invention, when the existing instrument transformer is moved to the outside of the main frame base and lowered onto the ground surface, first, the existing transformer is first used. Loosen the suspension bolts of the instrument transformer, remove the spacers, release one end of the connection plate of the plurality of suspension units, and divide each of the divided guide members into a plurality of suspension members along both sides of the horizontal frame body. A predetermined portion is sandwiched between both side plates of the unit, and the connecting plate is fixed.
The guide member is slidably mounted on the rail body, moves to a predetermined position on the instrument transformer, and the hook at the lower end of the hanging metal fitting unit extending downward is connected to the long hole of the facing long hole. Lock the support bolts, loosen the suspension bolts, transfer the full weight of the instrument transformer to the movable unit, remove the existing suspension bolts, and then remove the movable unit from the outside of the main frame stand. The lower part hook of the chain block, which is locked to the fishing rod, is moved to the lower part of the fishing part frame member with the The method is characterized in that the instrument transformer is locked on a suspension hook, pulled up slightly, the entire weight of the instrument transformer is transferred to the chain block, and the instrument transformer is lowered on the ground surface.

[0011] In the method of using the instrument transformer simple replacement device of the present invention, in the case where a new instrument transformer on the ground surface is mounted below the horizontal frame body inside the main frame base, the above-mentioned reverse operation is performed. By performing the process, the instrument transformer can be installed at a predetermined location.

Since the instrument transformer simple replacement device of the present invention includes a pair of parallel guide members, a plurality of suspension units, a fishing frame member, and at least two movable units, assembly is easy. Thus, at least two persons can safely replace the transformer for the instrument, which has the effect of greatly reducing labor and costs.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings of the embodiment of the present invention, FIG.
FIG. 2 is a partially enlarged schematic front view of the instrument transformer simple replacement device in an initial stage of use in a state of use, and FIG. FIG. 3 is a schematic side view of a part of the instrument transformer simple replacement device in a final stage of use in a final state. FIG. 4 is a schematic side view of the instrument transformer in a partially-mounted state before the stage of use of the instrument transformer simple replacement device in a state in which the instrument transformer is suspended and accommodated.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below. As shown in FIG. 1 and FIG.
It comprises a pair of parallel guide members (1), a plurality of suspension units (2), a fishing frame member (3), and at least two movable units (4). As shown in FIG. Main frame mount (3) also called cubicle for power receiving equipment
A suspension frame member, also referred to as a suspension table, in which both ends of a horizontal frame body (20a) having a rectangular cross section are suspended below an upper frame (30a) in the direction of an openable and closable opening of the main frame frame. (2
0), a high-voltage instrument transformer (VC) suspended from the horizontal frame body using a mounting member such as a suspension bolt (40).
T) a simple replacement device for a metal instrument transformer for use in newly replacing an existing instrument transformer (10) such as T), wherein the suspension unit comprises a plurality of horizontal frame bodies. A connecting plate (2b) having means for assembling upper and lower portions of both side plates (2a) for holding both sides of a rectangular cross section facing each other in a U-shape. Fix the upper side of the L-shaped guide member upward and the other outer side symmetrically to the lower part of both side plates of each of the suspension units, and place the rail body on each of the upwardly outer sides. (1a) is provided, and the length of each of the guide members is a predetermined length that is provided in the inner part of the horizontal frame main body and extends sufficiently outward from the suspension support unit in the opening direction of the main frame base. The fishing frame member is located above the pair of guide members near the outer end in the opening direction. A supporting mechanism for supporting the bridged fishing rod (3a), locking the upper hook of the chain block (3b) to the fishing rod, and allowing the lower hook to be vertically movable between the guide members; The movable unit has wheels (4a) axially mounted on the inner sides of a pair of plate-shaped main bodies, and the center recesses of the wheels are slidably and loosely fitted into the rail main body, and protrude inside the central parts of the main bodies. Detent member (4b)
A rigid ball that is rotatable via a bearing at the distal end of the vibration-preventing member, and a mechanism in which the distal end of the rigid sphere slidably presses the outer wall of the guide member at all times. A horizontal frame member (4c) is installed, and a hanging metal fitting unit (4d) having a height adjustment bolt on the horizontal frame member and extending downward is provided near both ends of the horizontal frame member. It is characterized by.

In the instrument transformer simple replacement device according to the embodiment of the present invention, a metal round bar member is used as the rail main body (1a) of the guide member (1) and is welded to the upper surface of the guide member. .

In the instrument transformer simple replacement device according to the embodiment of the present invention, the upper and lower portions of both side plates (2a) of the suspension unit (2) for holding the horizontal frame body (20a) in a U-shape are assembled together. Means for freely connecting are such that one end of the connecting plate (2b) is axially attached to the upper and lower horizontal ends of the side plate using a bolt or the like so as to be freely rotatable horizontally, and a hook recess is provided at the other end of the connecting plate.
It is loosely fitted to a bolt provided at one horizontal end of the opposed side plate,
Fix the other end of the connecting plate at a predetermined position with the bolt,
It is a means to connect freely.

In the simplified instrument transformer replacement apparatus according to the embodiment of the present invention, the suspended state of the instrument transformer (10) before replacement before the stage of using the instrument transformer simple replacement apparatus is as follows. As shown in FIG. 4, the upper frame (30) in the main frame base (30), which is also called a cubicle of an existing high-voltage power receiving facility or the like.
a) At the lower part, both ends of a horizontal frame main body (20a) having a rectangular cross section (for example, a square having one side of a cross section: 10 cm) are hung in the direction of an openable and closable opening of the main frame base. At the upper part of the horizontal frame main body of the supporting frame member (20), two hanging horizontal plate members (40a) are horizontally bridged, and provided at four corners near the upper part of the instrument transformer. Hole (10
The other end of the hanging bolt (40) passed through a) is supported by a double nut on both ends of the hanging horizontal plate material facing each other, and a predetermined distance is provided between the lower portion of the horizontal frame main body and the upper portion of the instrument transformer. With a thickness of
A wooden spacer (40b) is inserted and suspended.
Although there are various weights and dimensions of the instrument transformer, for example, weight: 60 to 100 kg, maximum height: about 70 cm,
The maximum width is about 50 cm, and the maximum length is about 60 cm. The dimensions of the main frame base are about 2 m in height, about 1 m in depth, and about 1 m or more in width.

In the method of using the instrument transformer simple replacement device according to the embodiment of the present invention, the existing instrument transformer (10) is moved to the outside of the main frame base (30), and is moved to the ground surface (30d). First, as shown in FIG. 1, the suspension bolts (40) of the existing transformer for an instrument are loosened, the spacers (40b) are removed, and the connecting plates of the plurality of suspension units (2) are removed, as shown in FIG. One end of (2b) is released, and each of the two divided guide members (1) is sandwiched at predetermined positions along both sides of the horizontal frame body (20a) by the two side plates (2a) of the plurality of suspension units. Then, the connecting plate is fixed, and then the two movable units (4) are slidably mounted on the rail body (1a) of the guide member, and are respectively provided at predetermined positions on the instrument transformer. Bracket unit (4d) that moves to the bottom and extends downward
The hooks at the lower end of the brackets are engaged with the elongated supporting holes (10a) facing each other, the hanging bolts are loosened, and the full load of the instrument transformer is transferred to the movable unit. (40) is removed, and then, as shown in FIG. 3, the movable unit is moved to the outside of the main frame base, and is moved together with the instrument transformer to below the fishing frame member (3); Fishing rod (3
The lower hook of the chain block (3b) locked to a) is locked to the suspension hook (10b) of the instrument transformer using a wire or other fishing support member, and is slightly pulled up. Transferring the entire weight of the transformer to the chain block and lowering the instrument transformer onto the ground surface.

In the method of using the instrument transformer simple replacement device according to the embodiment of the present invention, the new instrument transformer (10) on the ground surface (30d) is connected to the horizontal frame inside the main frame base (30). In the case of mounting work under the main body (20a), the above-mentioned reverse process can be performed, and the instrument transformer can be mounted at a predetermined location.

In the instrument transformer simple replacement device according to the embodiment of the present invention, the total length of the guide member (1) is about 140 cm.
A metal round bar member: diameter: 8 mm was used as the rail body (1a), and a width between the insides of the pair of guide members was about 10 cm.

[0021]

The present invention is embodied in the form described above and has the following effects.

The instrument transformer simple replacement device of the present invention is composed of a pair of parallel guide members, a plurality of suspension units, a fishing frame member, and at least two movable units. Thus, the transformer for the instrument can be safely replaced by at least two persons, which has the effect of greatly reducing labor and costs.

Since the instrument transformer simple replacement device of the present invention does not perform a major replacement work inside the main frame base, various electric components and wiring such as transformers and capacitors are installed on the lower frame. However, since the work space is not limited, the work can be performed safely, and the main replacement work is performed outside the main frame base, so that there is an effect of ensuring the safe replacement work.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cut-away schematic side view showing an embodiment of the present invention in an initial stage of a use state of an instrument transformer simple replacement device.

FIG. 2 is a schematic enlarged front view partially showing a sectional view taken along a line aa ′ in an initial stage of a use state of the instrument transformer simple replacement device, showing an embodiment of the present invention.

FIG. 3 is a partially cut-away schematic side view of the final stage of the use state of the instrument transformer simple replacement device, showing an embodiment of the present invention.

FIG. 4 is a partially cut-away schematic side view of the instrument transformer in a suspended and accommodated state before the stage of using the instrument transformer simple replacement device, showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide member 1a Rail main body 2 Suspension support unit 2a Side plate 2b Connecting plate 3 Fishing part frame member 3a Fishing rod 3b Chain / block 4 Movable unit 4a Wheel 4b Sway member 4c Horizontal frame member 4d Hanging metal unit 10 Meter transformer 10a Suspension support hole 10b Suspension support hook 10d Electrode 20 Suspension support frame member 20a Horizontal frame main body 30 Main frame support 30a Upper frame 30b Side frame 30c Lower frame 30d Ground surface 40 Suspension bolt 40a Suspension horizontal plate 40b Spacer

Claims (1)

[Claims] A main frame base (3) comprising a pair of parallel guide members (1), a plurality of suspension units (2), a fishing frame member (3), and at least two movable units (4).
In the lower part of the upper frame (30a), the horizontal frame body (20a) having a rectangular cross section has both ends suspended in the direction of the openable and closable opening of the main frame base. An instrument transformer simple replacement device used for newly replacing an existing instrument transformer (10) suspended using a mounting member below a horizontal frame main body, wherein the hanging support unit includes a plurality of hanging support units. A connecting plate (2b) having means for connecting the upper and lower portions of both side plates (2a) for holding the upper and lower portions of the horizontal frame body in a U-shape facing each other with a rectangular cross section facing each other; , A pair of the guide members are fixed symmetrically with one outer side of the L-shaped guide member facing upward, and the other outer side is fixed symmetrically at the lower part of both side plates of each of the suspension support units, and each of the upwardly facing outer side of the guide member is fixed. A rail body (1a) is disposed on one side, and the length of each of the guide members is The fishing unit frame member has a predetermined length provided in the back of the main body and extends sufficiently outward from the hanging support unit in the opening direction of the main frame base, and the fishing frame member is provided with a pair of guides near the outer end in the opening direction. Fishing rod (3a) bridged between members
, The upper hook of a chain block (3b) is locked to the fishing rod, the lower hook has a mechanism that can be operated vertically up and down between the guide members, and the movable unit has a plate-like shape. Each wheel (4
a), a center concave portion of the wheel is slidably and loosely fitted in the rail main body, and a vibration-preventing member (4b) protruding inward of the center of both main bodies is provided. A horizontal frame member (4c) is erected at the lower part of the main body, and height adjustment bolts are provided on the horizontal frame member near both ends of the horizontal frame member. And a hanging metal fitting unit (4d) extending downward is provided.