JPH0670438U - Disaster prevention trough - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a disaster prevention trough that will not be damaged in the event of a ground fault. [Structure] A locking tool 3 having an H-shaped cross section is interposed between a joint portion of a trough body 1 and a lid body 2, and a reinforcing lid body 6 larger than the lid body 2 is provided on the outer periphery of the lid body 2. ing. Further, the outer circumferences of the trough body 1 and the reinforcing lid 6 are tightened by the reinforcing band 4, and the cable 5 is housed in the trough.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a disaster prevention trough for laying a cable.

[0002]

[Prior art]

 Generally, in a trough containing ultra-high voltage cables, when a ground fault occurs in the cable, a large blast will be generated momentarily enough to damage the trough, further causing a cable fire. If a part of the trough is damaged at this time, the fire will spread due to the circulation of air inside and outside the trough, which will also damage other laying cables.

Therefore, as shown in FIG. 2, a trough body 1 and a lid body 2 for accommodating a cable 5 are provided while interposing a locking tool 3 having an H-shaped cross section between the joint portions of the conventional trough body 1 and the lid body 2. Reinforcement was performed by tightening the outer periphery of the with a reinforcement band 4.

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned disaster prevention trough, when the ground fault capacity increases and the pressure in the trough becomes large at the time of the ground fault, it is not enough to reinforce only with the reinforcing band, and the trough body and the lid are separated. There was a risk of damage or damage. Moreover, if damage occurs, there is the above problem.

[0005]

[The purpose of the device]

 The present invention has been made in view of the above problems, and an object thereof is to provide a disaster prevention trough that is free from damage or the like when a ground fault or the like occurs.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a trough body for accommodating a cable, a lid body for covering the upper surface of the trough body, and a trough body and a reinforcing band for tightening the outer periphery of the lid body. It is characterized in that a reinforcing lid is provided on the outer periphery of the.

[0007]

[Action]

 Since the reinforcing lid is provided on the outer periphery of the lid as described above, the strength of the trough is increased and it is possible to prevent damage or the like in the event of a ground fault or the like.

[0008]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the disaster prevention trough of the present invention has a locking member 3 having an H-shaped cross section interposed between the joint between the trough body 1 and the lid body 2, and the lid body 2 has an outer periphery. A reinforcing lid 6 larger than 2 is provided.

The reinforcing lid 6 is a fiber reinforced plastic (FRP), preferably made of a flameproof material containing a flame-retardant material such as a halogen-containing compound, and is a rigid body formed in a U-shaped cross section. Is. Further, the outer circumferences of the trough body 1 and the reinforcing lid 6 are tightened with a reinforcing band 4, and a cable 5 is accommodated in the trough. These strengthen the entire disaster prevention trough and increase the strength of the trough.

In some cases, the reinforcing lid 6 is formed by using a flexible sheet having a required strength and made of a flame-retardant material such as a halogen-containing compound in an FRP material. Alternatively, the trough body 1 and the reinforcement lid 6 may be adhered to each other and the outer circumferences of the trough body 1 and the reinforcement lid 6 may be fastened with the reinforcement band 4. The reinforcing lid 6 can be adhered not only to the outer periphery of the lid 2 but also to the outer periphery of the trough body 1 so as to cover the whole.

[0011]

[Effect of device]

 As described above, since the reinforcing lid is provided on the outer periphery of the lid, the strength of the trough is increased, and when the ground fault or the like occurs, the trough body and the lid are separated or damaged. Can be prevented. Therefore, the fire will not spread and other laying cables will not be damaged.

[Brief description of drawings]

FIG. 1 is a perspective view of a disaster prevention trough showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a conventional disaster prevention trough.

[Explanation of symbols]

 1 Trough body 2 Lid 3 Locking tool 4 Reinforcing band 5 Cable 6 Reinforcing lid

Claims (1)

[Scope of utility model registration request] 1. A disaster prevention trough comprising a trough body for accommodating a cable, a lid covering the upper surface thereof, and a reinforcing band for tightening the outer circumferences of the trough body and the lid, wherein a reinforcing lid is provided on the outer periphery of the lid. Disaster prevention trough characterized by the fact.