Electric cable locating device

FIELD: electrical engineering.

SUBSTANCE: proposed device has hose 22 designed for fixation on cable 3 and provided with relevant cable identifying marks on its outer surface. Hose is flattened and its section 23 is closed on at least part of its width while its naked part forms passage for cable 3.

EFFECT: facilitated use of device.

12 cl, 13 dwg

 

The invention relates to a device for determining the location of electrical cables.

The term "cable" refers to the external shell containing multiple conductors, and only one conductor.

In some applications, in particular in rail transport, i.e. Railways, tramways and underground routes in the metro, it is necessary to determine the location of electrical cables using an external device, which facilitates the connection of the cables at their first connection, and when you reconnect, for example after replacement device, fed by these cables.

The location of each cable is defined by a sleeve made of heat-shrinkable synthetic material and bearing on the outer surface of the identification marks. In principle, the sleeve is slipped onto the cable at one end, and then subjected to heat shrinkage, ensuring fixation on the cable.

In practice, with the aim of saving manufacturers do not perform the operation of shrink. In fact, when the cable is connected with installed on its end of the intermediate terminal of the armature, forming thereon an extension, this terminal fittings able to secure the sleeve.

However, in connection with the entry of new types of connections, such as spring the connection without terminal fittings and connections with a displaced insulation, there is a problem mounting the sleeve on the cable, allowing you to perform maintenance if the sleeve is not subjected to the cable shrink.

1 schematically shows a known device containing a sleeve 2 made of synthetic heat-shrinkable material, worn on the electrical cable 3. On the outer surface of the sleeve there are identification marks 4. As shown in figure 2, after the sleeve attached to the cable, are shrinking sleeves and flatten it by providing its fixation on the cable.

To avoid losing the sleeves are not attached to the cable by heat shrinkage was proposed by the sleeve 12, is shown in figure 3, with two through-holes 13, which enables you to skip the cable 3 with one side tapered sleeve on the other side through the first hole and then skip it with this other side of the sleeve at its first side through the second hole. One of the drawbacks of this solution is that when the sleeve is tapered, electric cable closes one side of the sleeve and prevents it from reading printed on this side of the identification.

Therefore, the technical problem behind the invention is a device for determining the location of the electrical cable by means of a sleeve that can be attached to the cable without ISOE is isawanya any auxiliary locking device or without surgery shrinking and which can be attached to the cable quickly and easily.

For this purpose, the proposed device comprises a sleeve designed to fit over the cable and having on the outer surface marks identifying the cable, the sleeve is tapered. The device is distinguished mainly by the fact that the area of the sleeve is closed at least part of the width of the sleeves and the open portion forms a passage for the cable.

Preferably, the sleeve has been closed at least at one end part of its width and to an open part formed a slit for passage of a cable.

Preferably, at least one end of the sleeve was closed for part of its width by using adhesive bonding, welding or shrink when heated part of the end or even section of the sleeve located at any location along the length of the sleeves.

Crack or each slit is present at one or both ends of the sleeve, allows you to insert the cable into the sleeve and take it out of the sleeve. A closed area or each closed region of the sleeve creates on the cable sufficient pressure to secure it to the sleeve so that the sleeve will be held on the cable when removing any of the latter. The length of each slit is proportional to the diameter of the inserted cable that provides good pressure sleeve on the cable. It should be noted that if the sleeve is tapered, you could see both sides, and can be easily read nasenyana sleeve identification signs.

According to the first variant implementation of the invention, both ends of the sleeve are closed for part of their width.

The presence of two cracks at both ends of the sleeve provides a secure fit of the sleeve on the cable.

At least one of the two slots available on the two ends of the sleeves, can join his corner.

In this case, preferably, two slots available on the two ends of the sleeve, adjacent to two opposite corners.

This configuration is of interest because, when the introduction of the cable into the sleeve through the slot at one end of the sleeve becomes easy to find located in the corner of the slit at the other end of the sleeve, through which should reach the cable.

To facilitate this operation, each closed area on one end of the sleeve is limited by the inner part of the sleeve line is angled approximately 45° relative to the longitudinal and transverse edges of the sleeves, which it connects. This design prevents jamming of the cable in the corner of the sleeve, because the line placed at an angle, naturally directs the end of the cable into the slit provided on the end of the sleeve.

According to another variant, the gap for the passage of cable available on one end of the sleeve, is located approximately midway between the two corners of the bounding this end of the sleeve.

In this latter case, the two y is Li, available at the two ends of the sleeve may be located approximately midway between the corners of the bounding these two ends of the sleeves.

You can combine various configurations described above.

In particular, it is possible at one end to perform a gap in the center, and at the other end to perform a gap in the area adjacent to the corner.

Preferably, the sleeve is made of a heat-shrinkable plastic, and closed areas on the ends were obtained by heat sealing. However, you can use other materials, including cardboard, with a partial closure of one or both ends by adhesive bonding.

The invention will become clearer from the following description with reference to the accompanying schematic drawings, in which, as examples, to limit the invention presents various embodiments of the proposed device.

Figure 1-3 depict the known device;

figure 4 depicts a sleeve, open at both ends;

5 is a sleeve, shown in figure 4, after the partial closure of the two ends;

6 - the device shown in figure 5, after putting on on on cable;

Fig.7 is a variant of the device shown in Fig.6, in similar form;

Fig - longitudinal section of the device shown in Fig.7;

Fig.9-11 - the other three options for performing device, the analogues of the nom Fig;

Fig - sleeve of heat-shrinkable material after shrinkage one end;

Fig - sleeve of heat-shrinkable material, the shrinkage is not at one end of the sleeve, and the plot of the length of the sleeves.

Figure 4 shows the sleeve 22 forming device according to the invention.

In the variant shown in figure 5 and 6, the two ends of the sleeve of synthetic material is partially closed by two fields 23, obtained by sealing, with each region 23 extends from one corner of the pre-tapered sleeve 22. Two closed regions 23 are displaced relative to each other. At each end of the sleeve 22 has a slit passing from the closed region 23 to the next corner.

As shown in Fig.6, the cable 3 is inserted into the slot 24 at one end of the sleeve and out of the sleeve through the slot 24 at the other end, and this second slot is adjacent to the opposite corner of the sleeve. The pressure acting on the cable 3, it is enough to secure it to the sleeve without having to perform the shrinking or the use of additional locking device.

In the variant presented in Fig.7 and 8, elements that are identical with the above, are denoted by the same positions. In this embodiment, tormosov 23 is not at right angles to the centre line of the sleeve, and has a triangular shape, and line 25, located on the inside of the part of the sleeve, forms an angle of about 45° with its longitudinal and transverse edges.

As shown by the dashed lines on Fig, in this implementation eliminates the danger that the end of the cable 3 with the introduction of the sleeve stuck in his corner. Line 25 is actually a natural guide for cable end 3 during its movement to the exit slit 24.

Figure 9 shows a variant in which the slot 26 on one end of the sleeve is made approximately midway between the two corners, and the slit 24 at the other edge adjacent to the corner.

Figure 10 shows a variant in which the slit 26 at each end of the sleeve is located approximately midway between the corners.

Figure 11 shows another variant of the device in which one end of the sleeve is fully open and the other end is closed by region 23 and the slot 24 therein adjacent to the corner.

On Fig shows another variant of the device according to the invention, in which the sleeve is made of a film or sheet of heat-shrinkable material. One end of the sleeve is subjected to the shrinkage by blowing hot air between the guides intended to limit the scope 27 shrinkage without affecting the body of the sleeve.

On Fig presents another variant of the device according to the invention, in which, as in the previous embodiment, the sleeve is made of a film or sheet of heat-shrinkable material. Here, however, the sleeve 22 is subjected to those whom mosatche on part of its length. Thus, the region 28 shrinkage now is not the end of the sleeve, and at any place along its length. Region 28 is formed also by blowing hot air between the guides, limiting its length on the sleeve, i.e. preventing damage to other parts of the body sleeve. Therefore, the ends of the sleeves remain fully open.

As can be seen from the described variants, the invention is a significant improvement over prior art tools. A device for determining the location of electrical cables according to the invention has a simple structure, is attached to the cable without the use of assistive devices and without performing locking operations, such as shrinking, and allows you to see the entire outer surface of the sleeve.

The invention is not limited to the execution device, which are described above as examples, but encompasses all variants. In particular, the material for the sleeves may not be syntheticism material and another material, such as cardboard, and partially closing at least one end of the sleeve may be made, for example, by adhesive bonding, which does not go beyond the scope of the invention, or a closed region and the slit may be arranged differently, which is not beyond the scope of the invention.

1. The device d is I locate electrical cables, containing sleeve (22), intended for installation on the cable (3) and having on the outer surface marks, identifying the appropriate cable, the sleeve (22) tapered, characterized in that the section (23, 27, 28) of the sleeve is closed at least part of the width of the sleeve to secure it to the cable, and the open portion forms a passage for the cable (3).

2. The device according to claim 1, characterized in that the sleeve (22) is closed at least at one of its ends on the part of its width, and the open portion forms a gap for the passage of the cable (3).

3. The device according to claim 2, characterized in that one end of the sleeve (22) is closed for part of its width by means of adhesive bonding or welding.

4. The device according to claim 2, characterized in that the sleeve (22) is made of a film or sheet of heat-shrinkable material, and at least one of its ends is subjected to a shrinkage in the part (27) of its width by heat shrinkage.

5. The device according to claim 1, characterized in that the sleeve (22) is made of a film or sheet of heat-shrinkable material and is subjected to heat shrinkage area (28)located anywhere along the length of the sleeves.

6. Device according to one of claims 1 to 5, characterized in that the two ends of the sleeve are closed for part of their width.

7. The device according to claim 6, characterized in that at least one of the two slits (24)on the two ends of the sleeve, adjacent to the corner.

8. The device according to claim 7, wherein the two slits (24)on the two ends of the sleeve, adjacent to the two opposite corners.

9. The device according to claim 7 or 8, characterized in that each closed region (23) at one end of the sleeve is limited by the inner part of the sleeve (25), located at an angle of about 45° longitudinal and transverse edges of the sleeves, which it connects.

10. Device according to one of claim 2 to 4, characterized in that the slot (26) for passage of a cable, available at one end of the sleeve (3), is located approximately midway between the two corners of the bounding this end of the sleeve.

11. The device according to claim 10, wherein the two slits (26)on the two ends of the sleeve (3), located approximately midway between the two corners bounding the ends of the sleeves.

12. Device according to one of claims 1 to 5, characterized in that the sleeve is made from synthetic material.

Priority items:

28.06.2002 according to claims 1-3 and 6-12;

06.08.2002 according to claims 4 and 5.



 

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