JP2020010458A - Switchgear and method of assembling switchgear - Google Patents

Abstract

To provide a switchgear having a frame structure with further improved assembling efficiency, since the assembly efficiency was reduced by the frame structure that constitutes a housing when attaching and detaching an externally assembled breaker unit or the like to and from the housing.SOLUTION: The switchgear houses: a circuit breaker unit 5 externally assembled to a housing 1 having pairs of front pillars, rear pillars, and intermediate pillars; and a busbar unit 6. The housing 1 is configured such that at least one of the pillars on a surface side on which each of the units is attached and detached is detachable.SELECTED DRAWING: Figure 1

Description

  The present application relates to a switchgear in which a switching device such as a circuit breaker is housed in a housing and a method of assembling the same.

2. Description of the Related Art Conventionally, a switchgear assembling method involves one or two assemblers directly mounting an electrical device such as a circuit breaker and an internal component such as a conductor such as a bus bar or an insulating support to a metal housing. It is a common practice to complete a switchgear on one side by mounting the switchgear through a frame or mounting plate formed in the depth and width directions, and directly mount internal components housed in a housing. Therefore, the efficiency of the assembling work is poor.
In order to improve the efficiency of the assembly work of the switchgear, in Patent Document 1, after a circuit breaker unit is manufactured outside the housing, a pair of guides fixed to both side walls of the housing are used. From the front side, a work to carry in the breaker unit and fix it to the housing has been proposed. (For example, see Patent Document 1)

JP-A-2012-114981

  In the conventional switchgear as described above, although the efficiency of the assembling work is improved for the circuit breaker unit that is externally assembled, the housing for other internal components such as a conductor such as a busbar or an insulating support is improved. The individual components are mounted from the rear side of the, and the efficiency of the assembly operation remains poor. Further, in Patent Document 1, it is necessary to attach a pair of guides and the like to the inside surface of the housing in order to carry in and fix the circuit breaker unit into the housing, which requires extra material and mounting costs for the guides and the like. Furthermore, since the assembler carries out the work of loading and fixing the circuit breaker unit from the front side of the housing, and also performs the work of mounting the bus bars and the like from the back side of the housing, the workability in the assembling work is reduced. There was a problem of being invited.

  The present application discloses a technique for solving the above-described problem, and has as its object to provide a switchgear that can improve the efficiency of assembly work.

  The switchgear disclosed in the present application is a switchgear in which a circuit breaker unit and a busbar unit are housed in a housing having a pair of front pillars, a rear pillar, and an intermediate pillar, respectively, and the housing is configured to attach and detach the units. At least one of the pillars on the side of the surface is detachably configured.

  According to the switchgear disclosed in the present application, a switchgear in which a circuit breaker unit and a busbar unit are housed in a housing having a pair of front pillars, a rear pillar, and an intermediate pillar, respectively, wherein the housing includes the units. Since at least one of the pillars on the surface side on which the attachment / detachment work is performed is detachable, not only the breaker unit but also the busbar unit is externally assembled, so that the efficiency of the assembly work is further improved and the work is obstructed. Each unit can be attached to the housing in a state where there is no pillar, and there is an effect that a switchgear that can improve the efficiency of assembly work can be obtained.

FIG. 2 is a perspective view showing a switchgear according to the first embodiment. FIG. 3 is a perspective view illustrating a housing of the switchgear according to the first embodiment. FIG. 2 is a perspective view showing a switchgear circuit breaker unit according to Embodiment 1. FIG. 2 is a perspective view showing a bus unit of the switchgear according to the first embodiment. FIG. 11 is a perspective view showing a housing of a switchgear according to a second embodiment.

Hereinafter, embodiments of the present invention will be described. In the drawings, the same or corresponding portions are denoted by the same reference numerals.
Embodiment 1 FIG.
1 is a perspective view showing a switchgear according to the first embodiment, FIG. 2 is a perspective view showing a housing of the switchgear according to the first embodiment, and FIG. 3 is a perspective view showing a circuit breaker unit of the switchgear according to the first embodiment. FIG. 4 is a perspective view showing a bus unit of the switchgear according to the first embodiment.

In FIG. 1, the switchgear has two circuit breaker units 5 shown in FIG. 3 mounted on an upper stage and a lower stage in a metal housing 1 shown in detail in FIG. 2, and a bus shown in FIG. The unit 6 is mounted and housed.
In FIG. 2, a housing 1 includes a bottom frame 1a formed on a bottom surface and an upper frame 1b formed on an upper surface, and a pair of front pillars 2a, 2b on the front side, rear pillars 3a, 3b on the back side, and an intermediate part. The front pillars 2b and the rear pillars 3b on the right side are detachable, and FIG. 2 shows a state where they are not attached.

In FIG. 3, a circuit breaker and the like are mounted on the circuit breaker unit 5.
In FIG. 4, the bus unit 6 is composed of a bus 6a, a connection conductor formed of copper or aluminum, an insulating support, and the like, and forms a side surface at a position facing the connection 6b with the circuit breaker unit 5. Slits 6c are provided in the vertical column portion to improve visibility when the connection portion 6b is viewed from the side.

The procedure for assembling the switchgear will be described.
First, as shown in FIG. 2, the front column 2a, the rear column 3a, and the intermediate columns 4a, 4b are mounted and fixed between the bottom frame 1a and the upper frame 1b, and the housing 1 is assembled. At this time, the detachable front pillar 2b and rear pillar 3b on the right side are not attached as shown in FIG.

  Next, the circuit breaker unit 5 shown in FIG. 3 and the busbar unit 6 shown in FIG. 4 pre-assembled at another place are carried in from the right side by an assembling trolley or a crane or the like. It is fixed to the rear column 3a and the intermediate columns 4a and 4b. At this time, the housing 1 and each unit may be fixed with bolts or rivets, or each unit may be inserted by providing a slit or the like in each column.

  Further, the electrical connection between the circuit breaker unit 5 and the busbar unit 6 is performed. By performing the work from the right side direction, the connection positional relationship between the units becomes easy to see, and the connection conductor is used when each unit is carried in. It is possible to prevent collisions and damages. Further, the busbar unit 6 is provided with a slit 6c as shown in FIG. 4, so that the visibility of the connection position is improved.

Finally, the front pillar 2b and the rear pillar 3b that have not been attached are attached, and assembling of the switchgear is completed as shown in FIG.
By assembling the switchgear in such a procedure, when assembling each unit in the housing 1, the front pillar 2 b and the rear pillar 3 b on the surface side for attaching and detaching each unit to the housing 1 are not provided. Therefore, the assembling work can be performed from the right side without obstructing the work, and the efficiency of the assembling work is improved.
In the above description, the right side of the housing 1 is the surface on which each unit is attached and detached. However, the left side of the housing 1 may be the surface on which each unit is attached and detached.

In addition, since not only the breaker unit but also the busbar unit is externally assembled in another place, for example, even if the collection of parts is bad, it is possible to manufacture from a unit having all the parts, and the assembly process is stopped. The stagnation time can be reduced, and the production lines can be parallelized, so that one or two workers do not need to work until all the internal components are assembled in the housing, and individual differences among workers are reduced. This makes it easier to plan the assembly man-hours and level the load.
Furthermore, when the circuit breaker unit is carried in and fixed to the housing, there is no need to attach a guide or the like to the inner surface of the housing.

Embodiment 2 FIG.
FIG. 5 is a perspective view showing a housing of the switchgear according to the second embodiment.
In the first embodiment, the case where the front pillar 2b and the rear pillar 3b of the housing 1 are configured to be detachable is described. However, in the second embodiment, the intermediate pillar 4b of the housing 1 is removable. Will be described.

  In FIG. 5, a housing 1 includes a bottom frame 1a formed on the bottom surface and an upper frame 1b formed on the top surface, each of which has a pair of front pillars 2a, 2b on the front side, rear pillars 3a, 3b on the back side, and a middle. The intermediate pillars 4a and 4b are connected to each other, and the intermediate pillar 4b on the right side is detachable, and FIG. 5 shows a state where it is not attached.

The procedure for assembling the switchgear will be described.
First, as shown in FIG. 5, the housing 1 is assembled by mounting and fixing the front pillars 2a, 2b, the rear pillars 3a, 3b, and the intermediate pillar 4a between the bottom frame 1a and the upper frame 1b. At this time, the detachable middle pillar 4b on the right side is not attached as shown in FIG.

  Next, the circuit breaker unit 5 shown in FIG. 3 and the busbar unit 6 shown in FIG. 4 pre-assembled in another place are loaded by an assembling trolley or a crane or the like, and the front pillars 2a and 2b and the rear pillar 3a, 3b and the intermediate column 4a. At this time, the housing 1 and each unit may be fixed with bolts or rivets, or each unit may be inserted by providing a slit or the like in each column.

  Further, the electrical connection between the circuit breaker unit 5 and the busbar unit 6 is performed. However, since the work is performed from the right side direction, since the intermediate pillar 4b is not attached, the connection positional relationship between the units is reduced. This makes it easy to see, and it is possible to prevent the connection conductors from collapsing and being damaged when each unit is carried in. Further, the busbar unit 6 is provided with a slit 6c as shown in FIG. 4, so that the visibility of the connection position is further improved.

Finally, the intermediate pillar 4b that has not been attached is attached, and assembling of the switchgear is completed as shown in FIG.
By assembling the switchgear in such a procedure, when assembling each unit in the housing 1, there is no intermediate column 4b on the surface side for attaching and detaching each unit in the housing 1. The connection positional relationship between the units is easy to see, and the assembly work can be performed from the right side without obstructing the work, and the efficiency of the assembly work is improved.
Note that the other parts are the same as those in the first embodiment, and a description thereof will not be repeated.

Although this disclosure describes various exemplary embodiments and examples, the various features, aspects, and functions described in one or more embodiments may be combined with specific embodiments. The present invention is not limited to the application, and can be applied to the embodiment alone or in various combinations.
Accordingly, innumerable modifications not illustrated are contemplated within the scope of the technology disclosed herein. For example, a case where at least one component is modified, added or omitted, and a case where at least one component is extracted and combined with components of another embodiment are included.

1 Housing, 1a bottom frame, 1b upper frame, 2a front pillar, 2b front pillar, 3a rear pillar, 3b rear pillar, 4a intermediate pillar, 4b intermediate pillar, 5 circuit breaker unit, 6 busbar unit, 6a busbar, 6b connection Part, 6c slit

Claims (6)

  A switch gear in which a circuit breaker unit and a busbar unit are housed in a housing having a pair of front pillars, a rear pillar, and an intermediate pillar, wherein the housing has at least one of pillars on a surface side on which the respective units are attached and detached. The switchgear is configured to be detachable.   2. The switch gear according to claim 1, wherein the housing is configured such that a front pillar and a rear pillar on a surface side on which the respective units are attached and detached are detachable. 3.   The switchgear according to claim 1, wherein the housing is configured such that an intermediate column on a surface side on which the units are attached and detached is detachable.   The switchgear according to any one of claims 1 to 3, wherein the busbar unit has a slit formed on a side surface at a position facing a connection with the circuit breaker unit.   A method of assembling a switchgear in which a circuit breaker unit and a busbar unit are housed in a housing having a pair of front pillars, a rear pillar, and an intermediate pillar, respectively, wherein a front pillar and a rear pillar on a surface side for attaching and detaching the respective units are provided. A switchgear comprising a step of assembling the housing in a state where no unit is provided, a step of mounting the units on the housing, and a step of mounting a front pillar and a rear pillar after the mounting of the units is completed. Assembly method.   A method of assembling a switchgear in which a circuit breaker unit and a busbar unit are housed in a housing having a pair of front pillars, a rear pillar, and an intermediate pillar, respectively, wherein there is no intermediate pillar on a surface side for attaching and detaching each unit. A method of assembling a switchgear, comprising: assembling the casing; attaching the units to the casing; and attaching an intermediate post after the units have been attached.

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