JP2859998B2 - Cable behavior test equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable behavior test apparatus used for examining mechanical effects on cables due to ground subsidence in soft ground or fluidization phenomenon during an earthquake.

[0002]

2. Description of the Related Art Conventionally, as a mechanical test device for a cable, there is an offset test device and the like.

FIG. 5 is a plan view showing an offset test apparatus. The offset test apparatus includes a gantry 31 provided with wheels and the like on its lower side, a power cylinder 32 for moving the gantry 31 in one direction, and the like.

After arranging the offset portion of the cable 33 on the gantry 31, the gantry 31 is connected to the power cylinder 3
The offset shape of the cable 33 is changed by moving the cable 33 in one direction by 2 or the like. In this way, the mechanical characteristics of the offset portion of the cable 33 can be checked.

[0005]

However, the above-described offset test apparatus only moves the gantry 31 in one direction, and is not for examining the mechanical influence on the cable due to land subsidence or earthquake. Therefore, there is a demand for a test device that can simulate ground subsidence and ground changes due to an earthquake or the like.

The present invention has been made in view of the above problems, and has as its object to provide a cable behavior test apparatus capable of performing a cable behavior test assuming a ground change or the like.

[0007]

According to a first aspect of the present invention, there is provided a cable behavior test apparatus comprising: a first gantry; vertical oscillating means for oscillating the first gantry in a vertical direction; A gantry, a horizontal swing means for swinging the second gantry in a horizontal direction, and a cable laying member disposed on the first and second gantry.

[0008] Cable behavioral testing apparatus according to the second aspect of the present invention includes a first frame, and vertical swinging means for swinging the first frame vertically, et provided on the first frame
A second gantry , horizontal swing means for oscillating the second gantry in a horizontal direction, and a cable laying disposed on the first gantry and the second gantry. And a member for use.

A cable behavior testing apparatus according to a third aspect of the present invention includes a plurality of cable support members for supporting a cable at a plurality of locations, respectively, and a cable support for the cable support member .
A vertical swing means for swinging the portion in a vertical direction, and a horizontal swing means for swinging a cable support portion of the cable support member in a horizontal direction.

[0010]

According to a first aspect of the present invention, a first gantry swings vertically in a vertical direction by vertical swing means and a second gantry swings in a horizontal direction by a horizontal swing means. I have. A cable laying member is disposed on the first and second pedestals, and a cable is laid on the cable laying member.

That is, in the present invention, first, a cable is laid on a cable laying member provided on the first and second gantry, and thereafter, the cable is laid by the vertical swing means and the horizontal swing means. The first and second pedestals are rocked, respectively. This makes it possible to simulate ground subsidence due to land subsidence, earthquake, and the like, and conduct a cable behavior test in these states.

Further, in the second invention of the present application, there is one mount, and this mount can be swung in the vertical direction and the horizontal direction by the vertical swing means and the horizontal swing means, respectively. . Thus, similar to the first invention of the present application, ground changes due to land subsidence and earthquakes can be simulated, and the mechanical characteristics of the cable in these states can be examined.

Further, in a third aspect of the present invention, there is provided a cable support member for supporting a cable, and vertical and horizontal swing means for swinging the support member in a vertical direction and a horizontal direction, respectively. I have. For example, by providing a plurality of pillars and arranging the cable behavior test device according to the present invention on each pillar, the cable can be swung in the vertical direction and the horizontal direction, and the cable during ground subsidence and earthquake can be used. Can be tested for behavior.

[0014]

Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a schematic side view showing a cable behavior test apparatus according to a first embodiment of the present invention.

The cable behavior test apparatus according to the present embodiment
It comprises a vertical gantry 1 and a horizontal gantry 2.

The vertical gantry 1 is provided on a gantry frame 11, a support 12 for supporting one end of the gantry frame 11 so as to be swingable by a support shaft 12a, and the other end of the gantry frame 11. And a hydraulic cylinder 13 that swings the gantry frame 11 in the vertical direction with the support shaft 12a as a fulcrum.

The horizontal gantry 2 is provided with a gantry frame 21.
And a horizontal movement roller 22 disposed below the gantry frame 21 and a hydraulic cylinder 23 for swinging the gantry frame 21 in its length direction.

Further, a plurality of cable laying members 3 are arranged on each of the frame frames 11 and 21, and the cables 4 are laid by these cable laying members 3. This cable 4 is, for example,
This is a 275 kV CSZV cable.

In this embodiment, the hydraulic cylinder 13
Is driven, the gantry frame 11 is
It swings in the vertical direction with a as a fulcrum. Thereby, vertical ground displacement can be simulated. Further, by driving the hydraulic cylinder 23, the gantry frame 21 is moved.
Swings along its length. Thus, ground displacement in the cable axial direction can be simulated, and mechanical effects on the cable due to land subsidence and earthquake can be examined.

In the present embodiment, the cable has a two-dimensional structure in the horizontal and vertical directions, so that the behavior of the cable when the ground changes in each direction can be easily grasped. Further, by individually driving the hydraulic cylinders 13 and 23, an independent test in one of the vertical direction and the horizontal direction is also possible.

Further, in the apparatus of this embodiment, by changing the shape, arrangement pitch, etc. of the cable laying members 3, it is possible to cope with various cable laying forms.

FIG. 2 is a schematic side view showing a cable behavior test apparatus according to a second embodiment of the present invention.

One end of the gantry frame 5 is swingably supported by a support shaft 6 a of a support portion 6, and the other end is supported by a hydraulic cylinder 7. And
The gantry frame 5 is vertically swung by the hydraulic cylinder 7 with the support shaft 6a as a fulcrum.

On the gantry frame 5, a horizontal gantry 2
a and the gantry frame 14 are provided. The horizontal gantry 2a includes a gantry frame 24, as in the first embodiment.
It comprises a horizontal moving roller 25 disposed below the gantry frame 24 and a hydraulic cylinder 26 for swinging the gantry frame 24 in its length direction. on the other hand,
The gantry frame 14 is fixed on the gantry frame 5.

A plurality of cable laying members 3 are disposed on both of the gantry frames 14 and 24, and the cables 4 are laid by these cable laying members 3.

In this embodiment, by driving the hydraulic cylinder 7, the gantry frame 5 swings vertically about the support shaft 6a as a fulcrum, and the gantry frame 1
4, 24 also swing in the vertical direction. Thereby, the displacement of the ground in the vertical direction can be simulated. Further, by driving the hydraulic cylinder 26, the gantry frame 24 swings in its length direction. Thereby, displacement of the ground in the cable axial direction can be simulated.

In this embodiment, in addition to obtaining the same effects as those of the first embodiment, it is possible to obtain the effect of simulating the ground which is simultaneously displaced in the vertical direction and the horizontal direction. Can be.

FIG. 3 is a schematic perspective view showing a cable behavior test apparatus according to a third embodiment of the present invention.

The vertical base support 8 is, as shown in FIG.
A plurality of the frames are arranged on the gantry frame 9. And
A vertical movable arm 15 is supported near the upper end of each column 8 so that its length direction is horizontal and it is movable in the vertical direction. The vertical movable arm 15 is driven by a vertical movement actuator 18 and swings vertically.

A horizontal moving block 16 is supported by the vertical movable arm 15 so as to be movable in the horizontal direction. The horizontal movement block 16 is driven by two horizontal movement actuators 19 and swings in the horizontal direction.

The horizontal moving block 16 has a pan 17
Has been fixed. As shown in FIG. 4, the cable 4
It is fixed on a tray 17 provided on each column 8 and laid on the gantry frame 9.

In the present embodiment, by driving the vertical movement actuators 18 provided on each support 8,
The cable 4 swings vertically. Further, by driving the horizontal movement actuator 19 provided on each column 8, the cable 4 swings in the horizontal direction.

In this embodiment, the same effects as in the second embodiment can be obtained.

[0035]

As described above, according to the present invention, the cable can be vertically and horizontally rocked by the vertical rocking means and the horizontal rocking means. Can be simulated. For this reason, the present invention is extremely useful for examining mechanical effects on cables due to land subsidence, earthquakes, and the like.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a cable behavior test device according to a first embodiment of the present invention.

FIG. 2 is a schematic side view showing a cable behavior test device according to a second embodiment of the present invention.

FIG. 3 is a schematic perspective view showing a cable behavior test device according to a third embodiment of the present invention.

FIG. 4 is a schematic side view showing the cable laid state.

FIG. 5 is a plan view showing an offset test apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1; Vertical gantry part 2 and 2a; Horizontal gantry part 3; Cable laying members 4,33; Cables 5, 9, 11, 11, 14, 21, 24; Hydraulic cylinder 8; vertical base arm 15; vertical movable arm 16; horizontal moving block 17; saucers 18, 19; actuators 22, 25; rollers 31;

Claims (3)

(57) [Claims] 1. A first gantry, vertical swing means for swinging the first gantry in a vertical direction, a second gantry, and a horizontal direction for swinging the second gantry in a horizontal direction. A cable behavior test device comprising: a swinging means; and a cable laying member disposed on the first and second frames. Wherein the first frame, and vertical swinging means for swinging the first frame in the vertical direction, on the first frame
A second frame provided in a horizontal direction swinging means for swinging the second frame in the horizontal direction, said first frame and
A cable behavior test device comprising: a cable laying member provided on a second gantry. 3. A plurality of respective support the cable at a plurality of points
And number of cable support members, cases of the cable support member
A cable behavior test device comprising: a vertical swing means for swinging a bull support in a vertical direction; and a horizontal swing means for swinging a cable support of the cable support member in a horizontal direction.