JPS646376Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides a rail branching device for running a towing vehicle for cables for mobile equipment, which is installed in a limited location such as inside a nuclear reactor containment vessel. It is related to.

[Technical background of the invention] For example, in a nuclear reactor containment vessel, as shown in a perspective view in Fig. 1, there is a mobile device 1 that uses electric power to run on the floor and automatically inspect the inside of the vessel. A cable 2 has one end connected to a mobile device 1 and the other end connected to a power source, control equipment, information communication equipment, etc. provided in a command room or the like outside the container, and is supported by a side wall inside the container. A rail 3 that accommodates the cable 2 inside, and a rail 3 that runs on the rail 3 to tow the cable 2 and, if necessary, pulls out the cable 2 or stores the pulled-out cable 2 inside the rail 3. A towing vehicle 4 is provided.
As shown in the cross-sectional view in FIG. 2, the rail 3 has a U-shaped cross section with a horizontal portion 3a at the upper end.
The towing vehicle 4 is mounted on the rail 3 via rollers 4a that are in contact with the upper end surface, side surface, and lower end surface of the rail 3.

In the automatic inspection equipment as described above, a branching device A as shown in the plan view of FIG. 3, for example, is provided in the middle of the rail in order to meet the behavioral requirements of the mobile device 1. That is, the branching device A connects one end of the trunk side portion (pre-branched portion) 3'a of the main rail 3' supported by the side wall inside the container to the branch side portion (pre-branched portion) of the main rail 3'. latter part) 3'b
Two switching rails 5a, 5b for connecting to one end of the sub-rail 3'' fixed to one end or a side wall inside the container, and a slide frame 6a and a slide frame 6a for fixing the switching rails 5a, 5b.
A slide mechanism 6 having a motor cylinder 6b fixed to a side wall inside the container is provided for horizontally sliding the container. Therefore, by driving the motor cylinder 6b and sliding the slide frame 6a to the solid line position in the figure, the main rail 3'
The main line side portion 3'a and the branch side portion 3'b are connected via a linear switching rail 5a, and by similarly sliding the slide frame 6a to the chain line position in the figure, the main rail 3' Main line side part 3'a
and the sub-rail 3″ are curved switching rails 5b.
connected via.

[Problems with background technology]

However, in such a branching device, when the towing vehicle 4 runs on the straight switching rail 5a, as shown in FIG. There is a risk that the cable 2 pulled out from the cable 4 may get caught on the support 6c of the curved switching rail 5b. In order to eliminate such a fear, it is necessary to use a straight switching rail 5a.
The distance d between the curved switching rail 5b and the support 6c must be made sufficiently wide so as not to hinder the passage of the cable 2. However, if the distance d is increased, the slide frame 6a becomes larger and its The support structure becomes complex. In addition, slide frame 6 like this
If the horizontal width of a is large and it slides horizontally, the passage width of the mobile device 1 will be narrow, so it is impossible to meet the demand for reducing the horizontal width of the branching device to match this.

[Purpose of invention]

The present invention was developed based on the above-mentioned circumstances, and aims to provide a rail branching device that does not obstruct the passage of cables and has a small horizontal width.

[Summary of the idea]

In the present invention, the above object is achieved by sliding the switching rail up and down.

[Example of idea]

FIG. 5 is a perspective view of an embodiment of the present invention, in which the same parts as in FIG. 3 are designated by the same reference numerals.
As shown in the figure, one end portion of the sub-rail 3″ is
The branching device A' according to the present invention is arranged above the branching side portion 3'b of the main rail fixed to the side wall of a structure such as a reactor containment vessel. A slide mechanism 6' having a motor cylinder 6b fixed to the side wall inside the container for sliding the slide frame 6'a and the slide frame 6'a, and a curved line fixed to the slide frame 6'a so as to be arranged above and below. It includes a shaped switching rail 5b and a straight switching rail 5a,
By driving the motor cylinder 6b, the slide frame 6'a is slid up and down to change the trunk side portion 3'a of the main rail to the curved switching rail 5b.
It is connected to the sub-rail 3'' via the rail, or to the branch side portion 3'b of the main rail via the linear switching rail 5a.

As shown in FIG. 6, the curved switching rail 5
b and the linear switching rail 5a are fixed to the slide frame 6'a via a support 6'c, and the distance d' between them is such that the towing vehicle 4 can travel thereon.

The branching device A' according to the present invention is constructed as described above, and as shown in FIG. When the vehicle 4 travels on the linear switching rail 5a, the cable 2 pulled out from the towing vehicle 4 passes between the two switching rails 5a and 5b without any hindrance.

FIG. 7 is a front view showing the main parts of another embodiment of the present invention, and as shown in the figure, one end of one switching rail 5c is connected to the main rail side portion
The switching rail 5c is rotatably fixed to one end of the switching rail 5c, and the switching rail 5c is attached to a slide mechanism such that the other end of the switching rail 5c is connected to one end of the branch side portion 3'b of the main rail or one end of the subrail 3''. It is slid up and down by driving a motor cylinder (not shown). Fig. 8 is a front view showing the main part of still another embodiment of the present invention. One end portion 7 of the rail 5'c is made of a flexible member, and one end thereof is fixed to one end of the trunk side portion 3'a of the main rail, and the other end of the switching rail 5'c is made of a flexible member. The switching rail 5'c is slid up and down by a motor cylinder (not shown) of the slide mechanism so as to be connected to one end of the branching side portion 3'b of the rail or one end of the sub-rail 3''.

In this way, one switching rail 5c, 5'c
Also, the trunk side portion 3'a of the main rail can be connected to the branch side portion 3'b of the main rail or the subrail 3''.

[Effect of idea]

As described above, in the rail branching device of the present invention, the towing vehicle can run without interfering with the passage of the cable. Furthermore, since there is only one rail in the horizontal direction, its horizontal width can be made much smaller than that of conventional branching devices.

[Brief explanation of the drawing]

Figure 1 is a perspective view of automatic inspection equipment in the reactor containment vessel, Figure 2 is a sectional view of the rail in the same equipment, Figure 3 is a plan view of a conventional branching device for the rail,
Fig. 4 is a sectional view taken along the line A-A in Fig. 3, Fig. 5 is a perspective view of an embodiment of the present invention, Fig. 6 is a side view of the switching rail in the same embodiment, and Fig. 7 is a sectional view of the invention FIG. 8 is a front view of still another embodiment of the present invention. 2...Cable, 3'...Main rail, 3'a
...Main line side part, 3'b... Branch side part, 3''...
Subrail, 4... Towing vehicle, 5a, 5b, 5
c, 5'c...Switching rail, 6'...Slide mechanism, 6'a...Slide frame, 6b...Motor cylinder, A'...Branch device.

Claims (1)

[Scope of utility model registration request] One end of a trunk side portion of a main rail supported by a side wall of a structure and on which a towing vehicle for moving equipment cables runs is connected to one end of a branching side portion of the main rail or one end of a subrail on which the towing vehicle runs. one or two switching rails; and a slide mechanism that slides the one or two switching rails so that the trunk side portion of the main rail is connected to the branch side portion of the main rail or the subrail. What is claimed is: 1. A rail branching device comprising: a rail branching device, characterized in that the sliding direction of the slide mechanism is vertical.