KR20150108583A

KR20150108583A - Marine cable tray

Info

Publication number: KR20150108583A
Application number: KR1020140031543A
Authority: KR
Inventors: 박인철
Original assignee: 박인철
Priority date: 2014-03-18
Filing date: 2014-03-18
Publication date: 2015-09-30

Abstract

The present invention relates to a marine cable tray fixed to a deck (10), which includes: a support (20) which is fixed onto the deck (10), and has a powder painting layer (23); a tray (30) which is coupled with the support (20), and has a power painting layer (33); and a coupling means (40) which is interposed between the support (20) and the tray (30) to be grounded by conduction. Therefore, in installing a marine cable tray, the number of painting processes for the cable tray and the support can be reduced. At the same time, the safety for electronic systems can be secured.

Description

Marine Tray

The present invention relates to a cable tray for a ship having a ground structure,

More particularly, the present invention relates to a cable tray for a ship having a ground structure that ensures safety by maintaining grounding performance in terms of electric field design of a ship in applying powder coating to a cable tray for a ship, which is an integrated cable tray and a support.

Due to the recent increase in demand for marine projects and the rapid increase in iron ore capacity, it is urgent to acquire design technology that can guarantee the electrical safety in the field system as well as the welding and painting techniques to improve durability and productivity . Prior art patents such as Korean Patent Registration No. 1098548 and Korean Patent Laid-Open Publication No. 2011-0086391 are known in connection with the safety problem on the ground of the electric system.

In the prior art of the former, there is provided a cable tray system in which a plurality of mounting units made of a floor bar and a mounting table are mounted and a cable tray is mounted on the mounting table, wherein the mounting table is provided with a fastening hole having a screw thread, And a grounding member is formed in the grounding groove. The grounding rod is threaded on the outer periphery of the grounding member and is coupled to the coupling hole. The grounding member is coupled from the bottom of the grounding member to the grounding member bottom surface, So as not to be separated from each other. Thus, even if a part of the cable tray is broken, an effect of grounding the electricity leaked in the other direction is expected.

The latter prior art patent discloses a clamp which is fitted in an access hole to fix a body; Attached to the clamp,

A hanger for collecting cables passing through the arm; And a grounding piece attached to the clamp to fix a plurality of grounding clamps collectively. As a result, various hoses, which are obstacles to passage, are collectively arranged, the unnecessary use of the grounding piece is eliminated, and an effect of preventing an accident of an image or electric shock is expected.

However, according to the above-mentioned prior patents, the durability of the main mechanism system closely linked to the full-length system can not be increased, and thus there is a lot of room for improvement in order to secure the safety and productivity of a tray supporting a plurality of wires .

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the above-mentioned problems in the prior art, and to provide a cable tray and a support in which a cable tray and a support are integrated, And a cable tray for a ship having a grounding structure for securing the cable tray.

In order to attain the above object, the present invention provides a ship cable tray fixed to a deck, comprising: a support fixed on the deck and having a powder coating layer; A tray coupled to the support and having a powder coating layer; And a fastening means interposed between the support and the tray so as to be grounded by energization.

According to the present invention, the support is characterized in that the powder coating layer is formed in a state in which the masking is omitted.

According to the present invention, the tray is provided with a non-coating area by masking around the fastening hole.

According to the present invention, the fastening means is characterized by using a bolt having a round head shank and a nut having a flange.

At this time, the round head shank of the bolt at least partially includes irregularities for increasing the contact surface.

The flange of the nut may be provided with teeth for penetrating the coating layer.

INDUSTRIAL APPLICABILITY As described above, according to the present invention, it is possible to reduce the number of steps of coating the cable tray and the support in the construction of the ship cable tray, and to secure safety as an electric system.

1 is a perspective view showing a cable tray according to the present invention;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a cable tray for ships fixed to a deck (10). The cable tray supports a plurality of wires so as not to be twisted, and may be disposed at other positions such as a bulkhead in addition to the deck 10 described above.

According to the present invention, a support (20) having a powder coating layer (23) is fixed on the deck (10). The powder coating layer 23 has a smooth surface and a high strength so that it does not peel off easily. However, since there is less concern about coating defects, the powder coating layer 23 is very useful in terms of compliance with the delivery date due to improvement in production line. In addition, there is no worry of fire, poisoning, and air pollution caused by solvent, and it is highly environment-friendly. The support 20 having the powder coating layer 23 is fixed to the deck 10 by welding.

At this time, the support (20) is characterized in that the powder coating layer (23) is formed with the masking omitted. The support 20 has a coupling hole 25 for coupling with a tray 30 to be described later. If masking is not performed on the periphery of the fastening hole 25 in the powder coating of the support 20, the number of workings is reduced, which is advantageous for improving the productivity.

According to the present invention, a tray 30 having a powder coating layer 33 is bonded onto the support 20. The tray 30 has a structure in which members are connected in a ladder-like shape, and hot dip galvanization is applied to the zinc-

The powder coating layer 33 is formed. Conventional liquid coating is applied once a day, but it is necessary to apply second coating the next day after waiting for drying. However, powder coating can be immediately transferred to the next coating process after a short heating process after painting. There is no wrinkle or flow phenomenon even if there is no viscosity control process at the time of forming the coating layer of the powder coating layer (33), so there is no need for overlap coating, but affinity is high even after various post coating.

At this time, the tray 30 is masked around the fastening holes 35 to provide a non-coating area. The fastening hole 35 is formed by fastening the bolt 41 of the fastening means 40 to be described later to the fastening hole 35 by performing the powder coating after the masking is performed over the area where the head of the bolt 41 contacts, A non-coating area capable of maintaining the electric conductivity can be formed.

On the other hand, the powder coating layers 23 and 33 of the present invention may be selected from thermoplastic or thermosetting resins, but they may be used in combination. For example, in the case of coating at a separate site, a thermoplastic resin is applied by a dipping method, and a case where the thermoplastic resin is applied after being installed on the deck 10, a thermosetting resin can be applied by electrostatic painting.

According to the present invention, the fastening means (40) is interposed between the support (20) and the tray (30) so as to be grounded by energization. The fastening means 40 mechanically connects and electrically connects the support 20 having the powder coating layers 23 and 33 to the tray 30 so that the grounding function can be smoothly performed.

At this time, the fastening means 40 is characterized by using a bolt 41 having a round head shank 42 and a nut 45 having a flange 46. The bolts 41 and the nuts 45 are engaged with the fastening holes 25 and 35 of the support 20 and the tray 30. The rounded head shank 42 of the bolt 41 prevents damage during contact with the cable, and contacts closely with the fastening holes 25 and 35 to maintain the energized state. The flange 46 formed on one side of the nut 45 has an enlarged shape and increases the contact area with the support 20.

As a detailed configuration of the present invention, the rounded head shank 42 of the bolt 41 is characterized in that it at least partially includes irregularities for increasing the contact surface. The concave and convex portions are formed in the portion of the round head shank 42 which is in contact with the tray 30 (the non-coating region) and the shank portion without the thread. The irregularities are formed in the form of fine protrusions and increase the electrical connection force between the support (20) and the tray (30).

As a detailed configuration of the present invention, the flange 46 of the nut 45 is provided with teeth 47 for penetrating the paint layer. A plurality of teeth 47 are formed in the axial direction at the edge of the flange 46 that has been enlarged in the nut 45. The flange 46 and the teeth 47 can be integrally formed of a press die. Even if the bolts 41 are pushed into the fastening holes 25 and 35 of the support 20 and the tray 30, the masking is omitted and electrical connection is made in the fastening holes 25 of the powder- The saw teeth 47 penetrate the powder coating layer 23 by scratching the support 20 at the moment when the nut 45 is tightened,

It is possible to maintain the electric grounding state by the previous operation.

Although the present invention has been illustrated and described with respect to a cable tray grounding structure for a ship, it is not necessarily limited thereto, but may be applied to any electrical system requiring grounding, such as seat, support, It can be applied as an idea.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

20: Support
30: Tray
41: Bolt
45: Nut

Claims

A cable tray for ships fixed to a deck (10) comprising:
A support (20) fixed on the deck (10) and having a powder coating layer (23) selected from thermoplastic or thermosetting resin;
A tray 30 coupled to the support 20 and having a powder coating layer 33 selected from a thermoplastic or thermosetting resin after forming the zinc plated layer 31; And
And a fastening means (40) interposed between the support (20) and the tray (30) so as to be grounded by energization,
The support (20) forms the powder coating layer (23) with the masking omitted,
The tray 30 is masked around the fastening hole 35 to have a non-coating area,
The fastening means 40 uses a bolt 41 having a round head shank 42 and a nut 45 having a flange 46,
The round head shank (42) of the bolt (41) at least partly includes irregularities for increasing the contact surface,
Characterized in that the flange (46) of the nut (45) has teeth (47) for penetrating the paint layer.