JPH0617330U - Cable trough - Google Patents

Abstract

(57) [Summary] [Purpose] Even if the lid accidentally hits the lid and the lid is punctured or the lid is broken, the cable stored in the trough body is damaged by the tip of the crane and the cable is disconnected. To provide an inexpensive cable trough that eliminates the occurrence of electrical accidents such as short circuits. A cable trough in which a trough body 1 having a U-shaped cross section for accommodating a cable 5 is covered with a lid 4, and the lid 4 is provided in the trough body 1 with a required gap 7 from the lid 4.
A protective plate 6 provided in parallel with.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cable trough mainly used for laying cables such as electric power cables and communication cables along the railroad tracks and in the premises.

[0002]

[Prior art]

 Conventionally, as a cable trough of this type, as shown in Japanese Utility Model Laid-Open No. 62-119116, a trough body having a U-shaped cross section for accommodating a cable is generally covered with a lid. Although it has sufficient strength for static load and distributed load, it is relatively weak for concentrated impact load.Therefore, when using conventional cable troughs, when civil engineering work is performed near the cable trough, If the crane hits the lid, the lid may be punctured or the lid may be broken, and the tip of the crane may damage the cable stored in the trough body, resulting in an electrical accident such as a cable break or short circuit. There was a risk of

[0003]

[Problems to be solved by the device]

 The problem to be solved by the present invention is to solve the problems described above, and even if the lid is accidentally hit by a crane and the lid is punctured or the lid is cracked, the cable stored in the trough body will not It is to provide an inexpensive cable trough that does not cause an electrical accident such as a cable disconnection or a short circuit due to the damage caused by the tip of the crane.

[0004]

[Means for Solving the Problems]

 The cable trough according to the present invention, which has solved the above-mentioned problems, is a cable trough in which a trough body having a U-shaped cross section for accommodating a cable is covered with a lid. It is characterized in that a protective plate parallel to the lid is provided on the.

[0005]

[Operation] In such a cable trough, the trough body is embedded in the ground or fixed on the ground, the lid is opened, the protective plate is taken out, the cable is stored in the trough body, and then the protective plate is returned to the trough body. , Lay the cable by covering the lid again.

[0006]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 3 show a first embodiment of the present invention, in which 1 is a trough body having a U-shaped cross section made of glass fiber reinforced plastic (hereinafter referred to as FRP). A projecting piece 3 for supporting the protective plate is formed at an intermediate position on the inner surface. Reference numeral 4 denotes a lid that covers the trough main body 1, the lid 4 is made of FRP like the trough main body 1, 5 is a cable housed in the trough main body 1, and 6 is made of plastic, rubber or the like. It is a protective plate. The protective plate 6 is supported by the protrusion 3 formed at an intermediate position on the inner surface of the side wall 2 of the trough body 1 so as to have a required space 7 between the protective plate 6 and the lid 4. The protective plate 6 is preferably made of an insulating material such as plastic or rubber, but may be made of metal or the like.

With such a structure, the trough body 1 is embedded in the ground or fixed on the ground, the lid 4 is opened, the protective plate 6 is taken out, and the cable 5 is housed in the trough body 1 and then protected. The plate 5 is supported by the protruding piece 3 on the side wall 2 of the trough body 1, a required gap 7 is provided between the plate 6 and the lid 4, and then the lid 4 is put on to lay the cable 5. As shown in, even if the lid 4 accidentally hits the crane beak 11 and a hole is made in the lid 4, the momentum of the crane beak 11 is considerably reduced by the lid 4, so even if it hits the protection plate 6, the protection plate 6 is not opened at this time. There is almost no momentum to open the cable, and the cable 5 stored in the trough body 1 is not damaged by the tip of the crane 11 and no electric accident such as disconnection or short circuit of the cable 5 occurs.

Next, FIG. 4 shows a second embodiment of the present invention. The difference from the first embodiment described above is that the cable 5 is housed in the trough body 1 and the sand-like substance 8 such as mountain sand The cable 5 is housed so as to be hidden, and the protection plate 6 is supported on the sand-like substance 8 so that a required gap 7 is provided between the lid 4 and the protection plate 6 and the trough body 1 is covered with the lid 4. Therefore, when the sandy substance 8 is used in this way, the protrusion 3 for supporting the protective plate, which is required in the first embodiment, may be omitted. With such a configuration, the sand-like substance 8 also protects the cable 5 in addition to the protection plate 6, so that the protection of the cable 5 becomes more reliable and more preferable.

The present invention is not limited to the one described in the above-mentioned embodiment, and, for example, the side wall 2 of the trough body 1 is inclined so that it becomes wider as it goes upward, and the protrusion 3 is not formed. At least, the protection plate 6 may be supported in the middle of the side wall 2, or the cable 5 may directly support the protection plate 6. The sand-like substance 8 used in the second embodiment may be any sand-like substance made of an insulating material other than mountain sand and sea sand. Further, in the embodiment, both the trough body 1 and the lid 4 are Although it is made of FRP, the material is not limited, such as an iron plate or a hard synthetic resin.

[0010]

[Effect of device]

 As is apparent from the above description, the present invention has a protective plate provided between the cable and the lid at a required distance from the lid and parallel to the lid, so that the crane beak accidentally hits the lid and a hole is opened or cracked in the lid. Even if it does, the force of the crane will be reduced by the lid and the crane will stop at the protective plate, there is no risk of damaging the cable, and since it is only necessary to provide the protective plate inside the trough body, the installed cable It can also be used for troughs, especially if the cable is embedded in a sandy substance stored in the trough body and a protective plate is supported on it, in addition to the above-mentioned function and effect, Even if a concentrated shock load is applied to the plate by the crane, the force exerted on the cable becomes a distributed load, which has the effect of further ensuring the protection of the cable. When mountain sand or sea sand is used as a sand-like substance, the cable is protected from fire, so there is no danger of the cable burning due to a fire along the railway, which is particularly preferable. Therefore, the present invention eliminates the problems of the conventional cable trough, and has an advantage that it can be provided at a low cost because of its simple structure, and has a very large practical value.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing a first embodiment of the present invention.

FIG. 2 is a vertical sectional front view showing a first embodiment of the present invention.

FIG. 3 is a vertical cross-sectional side view showing a state in which a beak is stopped by a protective plate.

FIG. 4 is a vertical sectional side view showing a second embodiment of the present invention.

[Explanation of symbols]

 1 Trough body 4 Lid 5 Cable 6 Protective plate 7 Spacing 8 Sandy substance

Front page continued (72) Inventor Hitoshi Ohira, 1-4, Mei Station, Nakamura-ku, Aichi Prefecture Tokai Passenger Railway Co., Ltd. (72) Inventor, Shinji Urushizaki, 1-1, Mei Station, Nakamura-ku, Nagoya-shi, Aichi Prefecture No. 4 Tokai Passenger Railway Co., Ltd. (72) Creator Yoshikazu Watanabe 122-2 Chiyoda, Ohata, Moriyama-ku, Nagoya, Aichi

Claims (2)

[Scope of utility model registration request] 1. A cable trough in which a trough body (1) having a U-shaped cross section for accommodating a cable (5) is covered with a lid (4), and a required space (7) is provided between the trough body (1) and the lid (4). A cable trough characterized in that a protective plate (6) is provided inside the trough body (1) in parallel with the lid (4). 2. A cable (5) embedded in a sand-like substance (8) housed in a trough body (1), said sand-like substance
The cable trough according to claim 1, wherein a protective plate (6) is supported on the (8).