JPH0133367B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] This invention relates to an insulated trolley wire.

[Background technology]

FIG. 1 shows a conventional trolley power supply device. This power supply device is a tension type power supply device used for trolley devices such as electric hoists, cranes, and electric trolleys that are supplied with power while moving.Three insulated trolley wires 1 are installed in parallel to provide a three-phase power supply to the trolley device. It was designed to supply the following.

The three insulated trolley wires 1 are held at their midpoints on mounting bars 2 through hangers 3. Both ends of each insulated trolley wire 1 are fixed to mounting base materials 8, 8' by terminal fixing insulators 4, terminal tightening insulators 5, coil springs 6, tightening bolts 7, and the like. The current collector 10 of the current collector 9 is slidably pressed into contact with the live part of the insulated trolley wire 1. This current collector 9 is attached to a current collector mounting rod 11 extending from a part of the trolley device (not shown), and power is supplied from the insulated trolley wire 1 to the trolley device via the current collector 9. ing.

As shown in FIG. 2, the insulated trolley wire 1 has a conductor 12 formed by roll-forming a strip-shaped thin plate into a potbelly-shaped cross-section, and is coated with an insulator 13 by integral molding. The insulator 13 has a current collecting guide groove 14, and the conductor 12 is exposed at the bottom thereof.

Usually, the insulated trolley wire 1 is a long one, and the fourth
As shown in the figure, it is wound into a roll inside a packaging box 15. When used, the insulated trolley wire 1 is pulled out from a part of the packaging box 15 and installed.

However, variations in roll forming,
When rolling it into the packaging box 15 or pulling it out,
The abutting portions 12a of the side edges of the conductor 12 made of a thin plate are separated, which weakens the resistance to twisting and may cause the conductor 12 to twist as shown in FIG. Note that it is impossible to provide the insulator 13 with enough strength to prevent twisting. If such twisting occurs, it will take time to correct the twisting and workability will deteriorate, and the guide groove 14 of the insulator 13 will be deformed, causing poor contact between the current collector and the conductor 12, resulting in poor current collection performance. descend.

[Purpose of the invention]

An object of the present invention is to provide an insulated trolley wire that is less likely to be twisted and has improved workability, and that has improved current collection performance without deformation of the current collecting guide groove due to twisting.

[Disclosure of the invention]

The insulated trolley wire of this invention has a strip-shaped thin plate I
A conductor is formed by an internal conductor bent to have a C-shaped cross-section, and an exposed conductor having a C-shaped cross-section that is fitted onto a flange portion with open side edges of a thin plate of the internal conductor.

An embodiment of this invention is shown in FIG. That is, in this insulated trolley wire 1', a conductor 18 is formed by an internal conductor 16 and an exposed conductor 17, and this conductor 1
8 is embedded in an insulator 19. The internal conductor 16 is made of a strip-shaped thin plate with both side edges connected to one flange 1.
The web 16b and the other flange 16c are bent at both ends of the flange 6a into an I-shaped cross-sectional shape by roll forming.
The exposed conductor 17 has a C-shaped cross section, and is formed by fitting a thin plate onto the open side flange 16a of the internal conductor 16 in a tight and tight state and caulking the exposed conductor 17. The insulator 19 has a pair of opposed protrusions 20 forming guide grooves 21 for collecting current, and has a surface that becomes the outer surface of the flange of the exposed conductor 18 exposed.

In this way, since the conductor 18 is obtained by clamping the flange 16a on the open side of the internal conductor 16 with the exposed conductor 17, the conductor 18 has high rigidity against twisting and eliminates the problem of twisting as in the conventional case. Therefore,
There is no need to correct the torsion, which improves workability, and there is no deformation of the guide groove 21 of the insulator 19 due to the torsion, improving current collection performance.

〔Effect of the invention〕

The insulated trolley wire of the present invention has the advantage of being less likely to be twisted, improving workability, and preventing deformation of the current collecting guide groove due to twisting, thereby improving current collecting performance.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a conventional trolley power supply device, FIG. 2 is a perspective view of its insulated trolley wire, and FIG. 3 is a perspective view of the insulated trolley wire in a twisted state.
FIG. 4 is a perspective view of the insulated trolley wire stored in a packaging box, and FIG. 5 is a perspective view of an embodiment of the present invention. 1'...Insulated trolley wire, 16...Inner conductor,
16a, 16c...flange, 16b...web, 17...exposed conductor, 18...conductor, 19...
Insulator, 21...Guide groove.

Claims (1)

[Claims] 1 A belt-shaped thin plate with both edges opening at both ends of one flange and the web and the other flange being doubled.
an internal conductor bent to have a C-shaped cross-sectional shape, an exposed conductor having a C-shaped cross-sectional shape fitted externally to the flange on the open side of the internal conductor, and a current collector guide groove on the bottom surface of the guide groove. An insulated trolley wire comprising: an insulator in which the inner conductor and the exposed conductor are embedded by exposing the outer surface of the exposed conductor.