WO2015064501A1

WO2015064501A1 - Unit storage device

Info

Publication number: WO2015064501A1
Application number: PCT/JP2014/078344
Authority: WO
Inventors: 洋城市; 暢祐宇埜; 達矢豊嶋
Original assignee: 富士電機株式会社
Priority date: 2013-10-28
Filing date: 2014-10-24
Publication date: 2015-05-07
Also published as: JP2015088509A; TWI555460B; CN105230143A; CN105230143B; TW201532501A; JP6364741B2

Abstract

In order to simplify an operation when exchanging a circuit unit, this unit storage device (1) for storing the circuit unit (101) of a semiconductor power conversion device (100) is provided with: a cart (10) having a mounting base (11) on which the circuit unit (101) is mounted; a cage (20) having an insertion/removal opening (24) which makes it possible to insert and remove the cart (10) while the circuit unit (101) is mounted on the mounting base (11); and a cart-immobilizing member (26) for detachably immobilizing the cart (10) in the cage (20).

Description

Unit storage device

The present invention relates to a unit storage device for storing a circuit unit which is a constituent element of a semiconductor power conversion device.

Some semiconductor power conversion devices are configured to have a desired function by combining a plurality of circuit units. Each circuit unit is configured by housing circuit components in an individual unit housing. The unit housing is configured to be detachable from the support frame of the semiconductor power converter. In this type of semiconductor power conversion device, only the target circuit unit can be removed from the support frame for inspection or replacement, and maintenance inspection work can be easily performed (see, for example, Patent Document 1). ).

When replacing the circuit unit, a circuit unit and a carriage stored in a unit storage device are usually used. The unit storage device is a gantry for storing the circuit unit. As the unit storage device A, for example, as shown in FIGS. 8A and 8B, the unit storage device A includes a cage A1 formed of a metal frame and a rail member A2 provided on the bottom surface of the cage A1. Is provided. The carriage C includes a mounting table C1 for mounting the circuit unit B, and can travel via wheels C2 provided on the lower surface of the mounting table C1.

When the circuit unit B of the semiconductor power converter is exchanged using the unit storage device A and the carriage C, first, the carriage C1 that is empty on the mounting table C1 is replaced with an exchange target in the semiconductor power converter (not shown). It arrange | positions in the position corresponding to the circuit unit B which becomes. From this state, the circuit unit B is moved so as to be pulled out from the support frame of the semiconductor power converter, and is mounted on the mounting table C1 of the carriage C.

Thereafter, as shown in FIG. 8-2, the carriage C is caused to travel to the unit storage device A and is disposed at a position corresponding to the empty rail member A2 in the cage A1. From this state, the circuit unit B mounted on the mounting table C1 of the carriage C is moved and replaced with the rail member A2 of the unit storage device A, and moved to the back of the cage A1 as shown in FIG. And store it.

Next, the empty carriage C is moved and arranged at a position corresponding to the rail member A2 in which the replacement circuit unit B is accommodated. From this state, the replacement circuit unit B stored in the unit storage device A is pulled out to the front of the cage A1 and mounted on the mounting table C1. Further, the carriage C is moved to the semiconductor power conversion device and arranged at a position where the circuit unit B is accommodated. From this state, if the circuit unit B is moved to the inside of the support frame, the circuit unit B is accommodated in the support frame, and the replacement operation is completed.

JP 2002-271721 A

By the way, the work of replacing the circuit unit B is not only a factor that complicates the replacement work, but can also be an opportunity to drop the circuit unit B. However, when the unit storage device A shown in FIGS. 8A and 8B is applied, it is necessary to replace the circuit unit B four times before the replacement of one circuit unit B is completed. That is, in the unit storage device A described above, the operation of replacing the circuit unit B from the support frame of the semiconductor power converter to the carriage C, and the circuit unit B placed on the carriage C to the rail member A2 of the unit storage device A Work to replace, Work to replace the replacement circuit unit B placed on the rail member A2 onto the carriage C, and Work to place the circuit unit B placed on the carriage C onto the support frame of the semiconductor power converter Is essential.

In view of the above circumstances, an object of the present invention is to provide a unit storage device capable of facilitating work when replacing a circuit unit.

In order to achieve the above object, in the unit storage device according to the present invention, the carriage on which the circuit unit is placed and the cage constituting the outer shell are divided. The cage is provided with a loading / unloading opening so that the cart can be taken in and out with the circuit unit placed on the mounting table, and further, a cart fixing means is provided so that the cart can be detachably fixed to the cage. Provided.

The carriage is preferably provided with mounting table unit fixing means for detachably fixing the circuit unit and the mounting table when the circuit unit is mounted on the mounting table. The mounting table unit fixing means includes, for example, a pair of support columns projecting upward from the mounting table and a horizontal beam member provided so as to connect the upper ends of the pair of support columns. It is possible to apply what fixes a circuit unit to a mounting base via a crosspiece member. It is further preferable to provide a cage unit fixing means for detachably fixing the circuit unit mounted on the mounting table and the cage. Further, in order to facilitate the work of replacing the circuit unit on the carriage, it is preferable to provide side guide members for guiding the movement of the circuit unit on both sides of the mounting table.

The cage can be configured so that a plurality of carts can be stored in a state of being arranged side by side, and the carts can be individually taken in and out through the loading / unloading opening. In this case, as the cage unit fixing means, it is possible to apply a unit for fixing a plurality of carts arranged in parallel to the cage at the same time.

According to the present invention, since the carriage can be inserted into and removed from the cage, when the circuit unit placed on the carriage mounting base is stored in the cage, the work of replacing the circuit unit becomes unnecessary. Thus, it is possible to facilitate the work for exchanging the circuit unit.

FIG. 1 is a perspective view of a unit storage device according to an embodiment of the present invention in which a carriage on which a circuit unit is placed is stored in a cage. 2 is a cross-sectional side view of the unit storage device shown in FIG. FIG. 3 is an exploded perspective view of the unit storage device shown in FIG. 1 with the carriage fixing means removed. FIG. 4 is an exploded perspective view of the unit storage device shown in FIG. 1 in a state in which the carriage is pulled out from the cage. FIG. 5 is an exploded perspective view of the unit storage device shown in FIG. 1 in a state where all the carts are pulled out from the cage. FIG. 6 is a front view of a semiconductor power conversion device that replaces a circuit unit by applying the unit storage device shown in FIG. 1. FIG. 7 is an exploded perspective view showing a circuit unit replacement operation for the semiconductor power conversion device shown in FIG. 6. FIG. 8A is a perspective view of a conventional unit storage device in which a circuit unit is stored in a cage. FIG. 8B is a perspective view of the unit storage device shown in FIG. 8A with the circuit unit mounted on the carriage.

Hereinafter, a preferred embodiment of a unit storage device according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 5 show a unit storage apparatus according to an embodiment of the present invention. As illustrated in FIGS. 6 and 7, the unit storage device 1 illustrated here is intended to store a circuit unit 101 that is a component of the semiconductor power conversion device 100. The circuit unit 101 of the semiconductor power conversion apparatus 100 is not shown in the figure, but has a desired function by housing circuit components (not shown) in individual unit housings 101a. It is configured. The unit casing 101a has a rectangular parallelepiped shape and is configured to be detachable from the support frame 102 of the semiconductor power conversion device 100. In the present embodiment, as shown in FIG. 7, the unit casing 101a is configured such that the depth dimension e is approximately 2.5 times and the height dimension f is approximately 5 times the left and right width dimension d. Is illustrated. In the following, for the sake of convenience, in the circuit unit 101 shown in FIG. 7, the narrow surface located on the near side is referred to as the front surface, and the rear surface parallel to the front surface is referred to as the back surface.

The unit storage device 1 that stores the circuit unit 101 includes a carriage 10. As shown in FIGS. 3 to 5, the carriage 10 is for mounting and transporting the circuit unit 101 in the posture when mounted on the support frame 102 of the semiconductor power conversion device 100. The carriage 10 applied in the present embodiment is configured to be able to travel by providing wheels 12 at the four corners of the lower surface of the mounting table 11 having a rectangular shape in plan view. The upper surface of the mounting table 11 has a rectangular shape larger than the lower surface of the circuit unit 101 and is formed flat. On the upper surface of the mounting table 11, a pair of support columns 13, a pair of side guide members 14, and a pair of fixing brackets 15 are provided.

The support column 13 is a prism-shaped member that protrudes vertically upward from both corners of one end of the mounting table 11 (hereinafter, the portion where the support column 13 is provided is referred to as a base end of the mounting table 11). It is. The projecting dimension of the support column 13 is set to be substantially the same as the height dimension f of the circuit unit 101. A crosspiece member 13 a is provided at the upper end of the support column 13 so as to connect the support columns 13 to each other. The crosspiece member 13a constitutes a mounting table unit fixing means for fixing the circuit unit 101 to the mounting table 11 when the circuit unit 101 is mounted on the upper surface of the mounting table 11. Although it does not do, it has a screw insertion hole for inserting attachment screw s. When the circuit unit 101 is placed on the upper surface of the mounting table 11, the horizontal rail member 13 a is provided so as to contact the upper front end portion of the circuit unit 101.

The side guide member 14 includes a guide column portion 14a that protrudes vertically upward from both side edges of the intermediate portion of the mounting table 11, and the other end portion of the mounting table 11 (hereinafter, the support column 13) from the upper end of the guide column portion 14a. And a horizontal guide portion 14b that protrudes substantially horizontally toward the tip of the mounting table 11). The guide column portion 14 a of the side guide member 14 is configured to have a height of ½ or less with respect to the support column 13. As for the horizontal guide part 14b, each protrusion edge part has connected with the intermediate part of the support column 13. As shown in FIG. A space in which the circuit unit 101 can be disposed is secured between the side guide member 14 provided on one side edge of the mounting table 11 and the side guide member 14 provided on the other side edge. .

The fixing bracket 15 constitutes a mounting table unit fixing means, similar to the horizontal beam member 13a, and is disposed at the base end portion and the distal end portion of the mounting table 11. Each fixing bracket 15 has a base fixing piece 15a and a unit fixing piece 15b, and is attached to and detached from the mounting table 11 by screwing a mounting screw s to the mounting table 11 via the table fixing piece 15a. It is attached as possible. The unit fixing pieces 15b are flat members that protrude upward from the upper surface of the mounting table 11, and are provided with a gap corresponding to the depth dimension e of the circuit unit 101 between them. Although not clearly shown in the drawing, the unit fixing piece 15b is provided with a screw insertion hole for inserting the mounting screw s.

On the other hand, the unit storage device 1 includes a cage 20. The cage 20 is configured in a frame shape by combining a plurality of metal frame elements. More specifically, the upper rectangular frame 21 of the cage 20 is configured by combining an upper front frame element 21a, an upper rear frame element 21b, and a pair of upper side frame elements 21c. The upper corners of the column frame elements 22 extending in the vertical direction are connected to the four corners of the lower surface of the upper rectangular frame 21. A lower rear frame element 23a and a pair of lower side frame elements 23b are provided between the lower ends of the support frame elements 22. As is clear from FIGS. 3 to 5, the front opening of the cage 20 has a loading / unloading opening 24 by omitting the lower frame element. The loading / unloading opening 24 enables the loading / unloading in a state where the carriage 10 travels. In the present embodiment, the loading / unloading opening 24 is configured so that two carts 10 having the same configuration can be accommodated in a state where they are arranged side by side.

Furthermore, the cage 20 of the unit storage device 1 is provided with a unit connecting member (cage unit fixing means) 25 and a pair of cart fixing members (cart fixing means) 26. The unit connecting member 25 is attached between the upper ends of a pair of support frame elements 22 located on the rear side of the cage 20. As shown in FIG. 2, the unit connecting member 25 comes into contact with the rear upper end portion of the circuit unit 101 when the cart 10 is stored in the cage 20 with the circuit unit 101 placed. It is provided. The carriage fixing member 26 is arranged up and down so as to span between a pair of support frame elements 22 located on the front side of the cage 20. These cart fixing members 26 can be attached to and detached from the front surface of the cage 20 by fastening and loosening the mounting screws s. Although not clearly shown in the drawing, when the carriage 10 is stored in the cage 20, the carriage fixing member 26 is a screw through which the mounting screw s is inserted into a portion facing the front surface of each support column 13. An insertion hole is provided.

As shown in FIGS. 1 and 2, the unit storage device 1 configured as described above is a semiconductor power that requires replacement of the circuit unit 101 in a state where two carriages 10 are stored in the cage 20 in advance. It is transported to the vicinity of the conversion device 100. In this case, the replacement circuit unit 101 is placed on one of the carts 10, and the other cart 10 is stored in the cage 20 in an empty state.

In the carriage 10 on which the circuit unit 101 is mounted, the mounting table 11 is screwed into the unit casing 101a via the cross rail member 13a between the fixing bracket 15 and the support column 13 described above. And the circuit unit 101 are fixed. Further, between the circuit unit 101 and the cage 20, both are fixed by screwing a mounting screw s into the unit casing 101 a via the unit connecting member 25. Further, a carriage fixing member 26 is attached to the front surface of the cage 20, and an attachment screw s is screwed to the support column 13 of each carriage 10 via the carriage fixing member 26, whereby the two carriages 10 are simultaneously connected to the cage 20. To be fixed to.

In this state, relative movement of the circuit unit 101 with respect to the carriage 10 is prevented, and relative movement of the carriage 10 with respect to the cage 20 is inhibited. Therefore, the circuit unit 101, the carriage 10, and the cage 20 can be transported as an integrated object. In addition, about the empty trolley | bogie 10, it is set as the state which attached the fixing bracket 15 to the front-end | tip part and base end part of the mounting base 11, respectively.

When the circuit unit 101 of the semiconductor power conversion device 100 is replaced, in the unit storage device 1, first, the mounting screw s is loosened to remove the cart fixing member 26 from the cage 20 and the cart 10, and the unit connecting member 25 is used. Then, the mounting screw s screwed into the circuit unit 101 is loosened and removed. In this state, the loading / unloading opening 24 of the cage 20 is opened, and the fixed state between the carriage 10 and the cage 20 is released. Therefore, as shown in FIG. 4 and FIG. If the cart 10 is also pulled out, it can be carried out of the cage 20. The empty carriage 10 pulled out from the cage 20 is in a state where the fixing bracket 15 is attached to the base end side of the mounting table 11, while the fixing bracket 15 is removed from the distal end side.

Next, the empty carriage 10 pulled out from the cage 20 is arranged at a position corresponding to the circuit unit 101 to be replaced in the semiconductor power conversion device 100. In this case, the carriage 10 is arranged such that the tip of the mounting table 11 from which the fixing bracket 15 is removed is close to the support frame 102 of the semiconductor power converter 100. In this state, if the circuit unit 101 is moved so as to be pulled out from the support frame 102 of the semiconductor power conversion device 100, the circuit unit 101 to be replaced can be mounted on the mounting table 11 of the carriage 10. At this time, since the side guide members 14 provided on both sides of the mounting table 11 serve as guides, the circuit unit 101 can be reliably moved to the mounting table 11 without incurring dropout from the mounting table 11. .

After the circuit unit 101 is moved to the carriage 10, the mounting screw s is screwed into the unit casing 101a via the cross rail member 13a. Further, after attaching the fixing bracket 15 to the tip of the mounting table 11, the mounting screw s is screwed into the unit housing 101 a via the fixing bracket 15 to fix the mounting table 11 and the circuit unit 101. To do. Thereafter, the carriage 10 on which the circuit unit 101 is placed is traveled to the cage 20 of the unit storage device 1 and is carried into the empty space of the cage 20 as it is. For the carriage 10 carried into the space of the cage 20, the circuit unit 101 is fixed to the cage 20 by screwing the mounting screws s into the unit housing 101 a via the unit connecting member 25.

Next, the carriage 10 on which the replacement circuit unit 101 is placed is pulled out of the cage 20 and moved to the semiconductor power converter 100. Thereafter, the fixing bracket 15 attached to the front end portion of the mounting table 11 is removed, and the replacement circuit unit 101 is housed in the support frame 102 as it is, so that the replacement operation of the circuit unit 101 is completed.

Finally, the trolley 10 that has been emptied is housed inside the cage 20, a trolley fixing member 26 is attached to the front surface of the cage 20, and mounting screws s are attached to the support columns 13 of each trolley 10 via the trolley fixing member 26. When screwed together, the relative movement of the circuit unit 101 with respect to the carriage 10 is prevented, and the relative movement of the carriage 10 with respect to the cage 20 is inhibited. For this reason, it is possible to transport the carriage 10 and the cage 20 as an integrated object even with respect to the circuit unit 101 to be replaced.

As described above, when the unit storage device 1 according to the present embodiment is applied, it is only necessary to replace the circuit unit 101 between the carriage 10 and the semiconductor power conversion apparatus 100. When the circuit unit 101 placed on 11 is stored in the cage 20, there is no need to replace the circuit unit 101. Accordingly, it is possible to facilitate the work when the circuit unit 101 is replaced.

Note that the above-described method of replacing the circuit unit 101 is described for illustrative purposes only, and is not limited to the above. For example, the carriage 10 on which the empty carriage 10 and the replacement circuit unit 101 are placed is simultaneously pulled out from the cage 20 and moved to the semiconductor power converter 100, and the circuit unit 101 to be exchanged is placed on the carriage 10. It is also possible to immediately store the replacement circuit unit 101 in the support frame 102 of the semiconductor power converter 100.

Moreover, if the elevating mechanism is provided on the mounting table 11, it can be applied to the semiconductor power conversion apparatus 100 in which the circuit units 101 are accommodated in a plurality of stages in the vertical direction with respect to the support frame 102. That is, if a lifting mechanism that lifts and lowers the circuit unit 101 along the pair of support columns 13 is provided on the mounting table 11, the height of the circuit unit 101 can be increased by raising the circuit unit 101 in the vertical direction by the lifting mechanism. Can be matched to the height position of each stage of the semiconductor power conversion device 100. As a result, the circuit unit 101 can be easily exchanged for the semiconductor power conversion device 100 in which the circuit unit 101 is housed in a plurality of stages in the vertical direction with respect to the support frame 102.

DESCRIPTION OF SYMBOLS 1 Unit storage apparatus 10 Carriage 11 Mounting stand 13 Supporting column 13a Crosspiece member 14 Side guide member 15 Fixing bracket 20 Cage 24 Loading / unloading opening 25 Unit connection member 26 Dolly fixing member 100 Semiconductor power converter 101 Circuit unit

Claims

A unit storage device for storing a circuit unit as a component of a semiconductor power conversion device,
A carriage having a mounting table for mounting the circuit unit;
A cage having a loading / unloading opening that allows the carriage to be taken in and out in a state where the circuit unit is placed on the placing table;
A unit storage device comprising: a carriage fixing means for detachably fixing the carriage to the cage.
The mounting table unit fixing means for detachably fixing between the circuit unit and the mounting table when the circuit unit is mounted on the mounting table. Unit storage device.
The mounting table unit fixing means includes a pair of support columns projecting upward from the mounting table, and a horizontal beam member provided so as to connect between upper ends of the pair of support columns, The unit storage device according to claim 2, wherein the circuit unit is fixed to the mounting table via a horizontal beam member.
2. The unit storage device according to claim 1, further comprising a cage unit fixing means for detachably fixing the circuit unit mounted on the mounting table and the cage.
The unit storage device according to claim 1, wherein the carriage is provided with side guide members for guiding the movement of the circuit unit on both sides of the mounting table.
2. The unit according to claim 1, wherein the cage is configured to be able to be accommodated in a state where a plurality of the carts are arranged side by side, and to be capable of being individually loaded and unloaded through the loading / unloading opening. Storage device.
The cage is configured to be able to be stored in a state where a plurality of the carts are arranged side by side, and to be able to put in and out the carts individually through the loading / unloading openings,
The unit storage device according to claim 4, wherein the cart fixing means fixes the plurality of carts arranged in parallel to the cage at the same time.
4. The unit storage device according to claim 3, wherein the mounting table is provided with an elevating mechanism for elevating the circuit unit along the pair of support columns.