JPH04507185A - Improvements regarding cable ladders - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Improvements regarding cable ladders The present invention relates to cable ladders, and more particularly to electrical cables and building ladders. Cable ladder structures for supporting water pipes, gas pipes, etc. on rooftops and under floors, and As a means of accommodating the cables and pipes located on different floors of a building, Regarding work.

A cable ladder consists essentially of side rails joined by transverse support means. It will be. The transverse support means may be a bar similar to a normal ladder tread, with It is called a cable ladder, but this support means does not have to be a tread, but can be a board, channel, tube, etc. Also, the rail It may be a plate that is integral with the support means.

If the support structure for such cables is formed from plate sections, then It is called a “cable tray”. The present invention is coupled with support means and clearly defined. Cable ladder, consisting of side rails. Support means are usually spaced apart. A transverse bar (horizontal bar) disposed at a cross section, but it may also be a plate. The present invention It can also be used as a cable tray, in which case the sides are connected to the side rails in the case of the present invention. Further, the base corresponds to supporting means. The term “cable ladder” of the present invention should be interpreted as such.

Cable ladders, or cable trays, usually consist of metal elements. However, even if the use of metal elements is mentioned in the description of the invention, this This is not essential to the configuration of the present invention.

When considering systems for supporting electrical cables and/or service pipes, multiple cable ladder and various auxiliary parts for joining different ladder parts. It is common to do so. In this case, arrange the ladder parts in a T-shape and tie them together. It may be necessary to connect the parts at an angle to each other. There is also. When joining using the conventional method, at least the cable ladder section and the ladder When connecting the auxiliary part, a connector piece is usually used, and the auxiliary part is used. Naturally, this increases the installation cost and the time required for installation.

The present invention provides a cable ladder device that does not require the use of connectors. is intended. This device according to the invention can be used for straight or curved cable ladder sections. and a cable ladder auxiliary part for connecting each part. In addition to this Also, as will become clear from the following description, for constructing the cable ladder of the present invention requires several parts. However, a distinctive aspect of the present invention is that a single component The present invention can also be recognized as a cable ladder part or an auxiliary It also concerns individual parts.

According to the invention, the cable has a cable ladder part and a cable ladder auxiliary part. a ladder device, wherein said parts are interconnected by cable support means; consisting of a side rail, said side rail being a cable ladder part or an auxiliary part; having at least two pairs of ends that are coupling means for coupling with another part that is The paired rail ends are formed to form complementary male-female couplings. A device in which each end of each rail has complementary male and female connections is provided. be done.

Thus, similarly formed cable ladder sections or cable ladder auxiliary sections can be used. directly by bolts or other means. can be fixed to.

Even when using multiple cable ladder sections and auxiliary sections, each rail shall have one end configured as an A-shaped (female) end and the other end configured as a B-shaped (male) end, and each It is understood that both ends of the rail are formed into A-shaped and B-shaped ends, respectively. Should. This configuration allows the rails in each section to connect to each other without using connectors. This means that it can be engaged and fixed, and assembly and placement can be done quickly and accurately. It will be done.

Each rail preferably has a constant cross-sectional shape along its length, provided that The cross section of the end is stepped so that it has a small diameter, making it an A-shaped end. Make sure to engage the B-shaped end at the end.

It is possible to construct complex cable ladder systems extending in various directions. Ru.

Regarding the auxiliary part, various combinations of the ladder part and the auxiliary part are possible, and they can be separated. No connecting parts are required.

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

In the drawings, FIG. 1 shows a portion of a cable tray illustrating one example of the invention; FIG. 2 shows how the cable ladder of the present invention can be used to form various cable trays. A plan view showing how it is used.

Regarding the drawings, first of all, in FIG. A few elements are shown and these elements are straight cable ladder section 10, T-shaped. a cable ladder auxiliary part 12 forming a joint, and a second straight cable ladder Part 14. The second ladder part 14 has a truncated end and is far away for illustration purposes. The far end of the cable ladder section 10 is not shown and the far end of the cable ladder section 10 is not shown. There are no horizontal bars, and many horizontal bars are omitted.

Each straight cable ladder section 10.14 runs from a pair of rails 16.20. These rails are formed in the shape of a groove with a U-shaped cross section. The rail is bent at the end. The paired bases face each other, and these flanges Minutes are facing outward. The base of the rail 16.20 is connected by a horizontal bar 22, As shown, it constitutes a straight ladder section.

The cross-section of the rail 16.20 is of the same size throughout its length; The end A of the rail 20 is stepped and formed with a small cross section, and the corresponding end B of the rail 20 is formed with a small cross section. It's not getting smaller. Ends A and B (A-type end and B-type end) are complementary, Forms an integral male-female union. That is, end A engages with corresponding end B.

A hole 24 is not provided in the rail base in the area corresponding to the end, and the end and the auxiliary part are bolted. G26. It is auxiliary connected by a nut 28 or the like.

The auxiliary part 12 forming the T-junction consists of three rails 30, 32, 34, Each has an end portion A and an end portion B as shown in the figure, and this one-character auxiliary portion 12 is, for example, When combined with straight ladder sections 10 or 14, mutual engagement is quick and simple.

The horizontal bars of the straight ladder part and auxiliary part are cables, gas and water service pipes. For this purpose, holes 36 and 38 are provided in these horizontal bars. The holes are longitudinal and transverse to the crossbar.

a ladder part and an auxiliary part having ends A and B which can be integrally engaged; , an extremely flexible cable ladder can be constructed by arranging it as shown in Figure 1. It is clear that it can be done.

Figure 2 illustrates to some extent its flexibility of use, showing the A-type end and the B-type end. The end is a straight cable ladder part 40.45 degree curved part 42.90 degree curved part 44, and how it is engaged and coupled with the four-way auxiliary portion 46.

From these, countless cable runs can be made using the cable ladder section and auxiliary section of the present invention. It will be readily understood that combinations of ray placements are possible.

In FIG. 2, end A is shown as having a stepped section.

The cable ladder of the present invention has a separate joint between the cable ladder part and the auxiliary part. item is not required.

Although not shown in Figure 2, even straight cable ladder sections can be connected to each other. It will be appreciated that the ends can be joined.

Copy and translation of written amendment) Submission form (Patent Law Article 184-8) October 18, 1991

Claims (6)

[Claims] 1. Cable ladder device with cable ladder part and cable ladder auxiliary part and a side rail in which said parts are interconnected by cable support means. and the said side rail is part of a cable ladder or other part which is an auxiliary part. having at least two pairs of end portions which are coupling means for coupling with a portion; The ends of the rails are formed to form complementary male-female couplings, and A device with complementary male and female connections at each end. 2. The cable ladder portion is connected to parallel, straight rails, which are the supporting crossbars, which are said supporting means. 2. The apparatus of claim 1, comprising: a. 3. Claims where the cable ladder auxiliary part has three tubes or more connecting means The device according to item 1 or 2. 4. Each rail of the cable ladder section or auxiliary section is a U-shaped channel; with the open side faces facing outward and said support means being connected to the channel base. A device according to any one of the claims. 5. 5. The device of claim 4, wherein the female coupling portion comprises a rail end having a reduced diameter cross section. 6. Advance consisting of multiple cable ladder sections and multiple cable ladder auxiliary sections A device according to any one of the claims.