JP4532515B2 - Laying device for curved section of insulated trolley wire - Google Patents

Description

  The present invention relates to laying an insulated trolley wire used in a mobile power feeding system that feeds power to a transport device such as a crane or a transport carriage or transmits a signal.

As shown in FIG. 6 (horizontal array type) or FIG. 7 (vertical array type), the insulated trolley wire 5 that supplies power to the transport device and transmits signals is connected with the joint 10 and extended. It is supported by a fixed clamp 11 and a sliding clamp 12, and is fixed and laid on a hanger bracket 13 or the like.
Incidentally, the insulating trolley wire is laid not only in the straight section but also in the curved section as seen in FIG. 6 or FIG. In particular, when installing insulated trolley wires in curved sections, it is necessary to provide fixed clamps and sliding clamps at a narrow pitch. In curved sections, insulated trolley wires are fixed in many places or only in the length direction. It is placed in a semi-fixed state that allows movement.

  In such a laying situation, when electric power is supplied and the use of the transport device is started, the insulated trolley wire expands and contracts due to thermal expansion due to heat generation due to energization of the insulated trolley wire itself and temperature fluctuations in the usage environment. Cause a phenomenon.

  In order to cope with this expansion / contraction phenomenon, in general, in the straight section, a method of relaxing the expansion and contraction is provided by providing an expansion / contraction portion as disclosed in Patent Document 1 on the insulated trolley wire.

  On the other hand, it is difficult to provide an expansion / contraction portion as disclosed in Patent Document 1 in the curve section, and the expansion / contraction of the insulating trolley wire cannot be relaxed. As shown in FIG. The section changes to a meandering state due to thermal expansion (solid line in FIG. 8 (a)) or a polygonal shape due to thermal contraction (solid line in FIG. 8 (b)), causing problems such as derailment of the current collector current collector. There is a risk that.

Therefore, Patent Document 2 discloses a trolley wire that facilitates running of the transport device in a curved section.
The trolley wire of Patent Document 2 can supply a trolley wire to a laying place where a small radius of curvature is required, and integrates a conductor (excluding a sliding surface), a conductor support fitting, and a hanger by resin injection molding. In addition, by performing the integration in a predetermined shape, it is possible to lay a small curvature radius with high accuracy and efficiency.

JP 2001-1796 A Japanese Patent Laid-Open No. 7-215098

  However, even with the trolley wire disclosed in Patent Document 2, it is not easy to relieve the change in the laying configuration of the trolley wire as shown in FIG. 7 caused by the thermal expansion and contraction of the trolley wire itself. It was difficult to obtain a good running performance.

  Therefore, the present invention provides a laying device for a curved section having a fixed structure of an insulated trolley wire that prevents a decrease in the running performance of the conveying device in the curved section of the insulated trolley wire laid due to thermal expansion or contraction of the insulated trolley wire itself. It is.

Invention of claim 1, further comprising a support bracket and the clamp, the support bracket, the track of the curved section in accordance with said clamp for supporting the insulating trolley line to the movement of a curved section of track of said insulating trolley wire A mounting hole having a structure for moving so as to absorb thermal expansion or contraction, and the clamp is moved along the surface of the mounting hole in the mounting hole in accordance with the movement of the curved section of the insulating trolley wire. It is a laying apparatus for a curved section having a fixed structure of an insulated trolley wire comprising a connecting portion that moves in a substantially normal direction of the installed insulated trolley wire and a support portion of the insulated trolley wire that is connected to the connecting portion.

The invention according to claim 2 is characterized in that the mounting holes are arranged so that the shape thereof is a long hole and the major axis direction of the long hole coincides with the substantially normal direction of the insulated trolley wire laid in a curved shape. The laying device for a curved section according to claim 1 .

  According to the present invention, in the curved section in laying the insulated trolley wire, the shape change of the curved section is detected with respect to the running failure of the conveying device due to the shape change of the curved section caused by the thermal expansion or contraction due to the thermal expansion or contraction of the insulated trolley wire. It has the effect of facilitating smooth running of the conveying device and not reducing the productivity, and has a remarkable industrial effect.

Hereinafter, the present invention will be described in detail with reference to the drawings.
1A and 1B are diagrams showing a first embodiment of the present invention, in which FIG. 1A is a top view, FIG. 1B is a front view, and FIG. 1C is a partial sectional view of the front view.
FIG. 2 is a diagram for explaining the relaxation operation of the present embodiment when the insulated trolley wire is expanded and displaced, (a) is a diagram showing a displacement form in a curved section, and (b) is surrounded by a one-dot chain line. FIG. 2 is an enlarged view illustrating a relaxation operation according to the embodiment of FIG. 1 in a range.

  1 and 2, 1 is a laying device, 2 is a support bracket, 2a is a mounting hole, 3 is a clamp, 3a is a connecting portion, 3b is a support portion, 4a is a sliding member, 5 is an insulated trolley wire, 5a is Insulated trolley wires displaced by thermal expansion, 5b indicate insulated trolley wires after relaxation. The arrow in the figure indicates the movement range of the clamp 3.

  A laying device 1 shown in FIG. 1 includes a support metal fitting 2 and a clamp 3. The support fitting 2 is provided with a mounting hole 2a having a long axis in the direction of absorbing thermal expansion or contraction of the line in the curved section of the insulated trolley line (in the direction of the approximate normal line of the trolley line curve). The clamp 3 is attached to the attachment hole 2a through the sliding member 4a at the site of the connecting portion 3a. The clamp 3 supports the insulating trolley wire by the support portion 3b, and moves the inside of the mounting hole 2a in the major axis direction of the mounting hole 2a, which is a direction to relieve the shape change of the curved section due to the thermal expansion and contraction of the insulating trolley wire. By moving, the transportability of the transport equipment is maintained.

  The sliding member 4a is provided to smoothly move the clamp 3 in the mounting hole 2a, and a material having low friction and excellent wear resistance is used. Usually, a hard plastic, a C / Cu composite material or the like is used.

Next, the shape maintaining operation with respect to the shape change of the curve section of the insulated trolley wire according to the present embodiment is shown in FIG.
When the insulating trolley wire is fixed to the support metal fitting 2, the insulating trolley wire changes into a shape like an insulating trolley wire 5a shown by a broken line in FIG. 2 due to thermal expansion and contraction. When such a change is made, it becomes difficult for the transport device to smoothly travel on the insulated trolley wire, and sometimes the derailment from the insulated trolley wire or the deformation of the track may occur.

However, as shown in FIG. 2B, when the insulated trolley wire is constructed using the laying attachment device 1 shown in FIG. 1, the insulated trolley wire 5 is caused by thermal expansion or thermal contraction (only thermal expansion in FIG. 2). When the shape starts to change to the shape of the insulated trolley wire 5a, the clamp 3 (not shown) that supports the insulated trolley wire 5 moves in the mounting hole 2a of the support fitting 2, and the shape of the curved section is changed to the insulated trolley. The conveying device as shown by the line 5b is maintained in a shape that can be moved smoothly.
As described above, the laying apparatus for curved sections according to the present invention has a shape change due to thermal expansion or thermal contraction so that the conveying device can be moved smoothly with respect to a change in the laying shape of the insulated trolley wire due to thermal expansion or thermal contraction. Is absorbed, and the laying curve shape of the line of the insulated trolley wire is changed.

FIG. 3 is a partial sectional view of a side view showing a second embodiment of the present invention.
4A and 4B are diagrams for explaining the relaxation operation of the present embodiment when the insulated trolley wire is displaced. FIG. 4A is a diagram illustrating a steady state, and FIG. 4B is a diagram illustrating a state in which the displacement due to thermal expansion in the curve section is relaxed. (C) is a figure which shows the state which relieve | moderated the displacement by heat contraction.

  3 and 4, 1 is a laying device, 2 is a support fitting, 2b is a mounting hole, 3 is a clamp, 3a is a connection part, 3b is a support part, 3c is a support shaft, 3d is a guide spring, 4b is sliding Members 5 are insulating trolley wires.

The laying device 1 shown in FIG. 3 includes a support fitting 2 and a clamp 3, and the clamp 3 is insulated from a guide spring 3d and a connecting portion 3a including a support shaft 3c that can be provided with both sides of the guide spring 3d. It consists of the support part 3b of the trolley wire 5, and is attached to the attachment hole 2b of the support metal fitting 2 via the sliding member 4b as shown in FIG. For example, the strength of the guide spring 3d is the 3d _1, 3d _2, the strength of both springs may be designed to absorb thermal expansion or thermal contraction of the insulating trolley wire.

Accordingly, the laying apparatus 1 can cope with a change in the shape of the track in the curved section of the insulated trolley wire due to thermal expansion or contraction, and moves the support shaft by the guide spring so that the shape of the curved section can be moved smoothly. Is to move.
In addition, the guide spring 3e also serves to place the laying / attaching device 1 in a steady state, that is, in the position shown in FIG. 4A, against excessive pressing of the current collector contacting the insulated trolley wire.

  FIG. 4 shows the mitigation operation of this embodiment. In a steady state, the laying device 1 supports the insulating trolley wire 5 at the position of FIG. 4 (a). When the insulated trolley wire is thermally expanded due to heat generation or the like, the laying device 1 moves as shown in FIG. 4 (b) in order to alleviate the shape change due to the thermal expansion, and the conveying device smoothly moves the curved section shape of the insulated trolley wire. To keep moving. Further, when the insulation trolley wire contracts due to a decrease in ambient temperature or the like, as shown in FIG. 4C, the laying device 1 moves in the opposite direction to FIG. The section shape is relaxed.

FIGS. 5A and 5B are diagrams showing a third embodiment of the present invention, in which FIG. 5A is a side view and FIG.
In FIG. 5, 1 is a laying device, 2 is a C-shaped cross-section support bracket, 2c is a mounting groove, 3 is a clamp, 3a is a connecting portion, 3b is a support portion, and 5 is an insulated trolley wire.

In FIG. 5, the C-shaped cross-section support fitting 2 is provided with a mounting groove 2c provided with the longitudinal direction of the groove in the relaxation direction of the insulating trolley wire.
The clamp 3 is attached to the attachment groove 2c by a connecting portion 3a. The clamp 3 supports the insulating trolley wire by the support portion 3b, and moves in the mounting groove 2c in a direction to relieve the shape change of the curved section due to the thermal expansion and contraction of the insulating trolley wire. Is to maintain.

  As in the case of the first embodiment, the relaxation operation is performed when the insulated trolley wire is constructed using the laying device 1 shown in FIG. 5, and the line shape of the insulated trolley wire 5 changes due to thermal expansion or contraction. When starting, the clamp 3 that supports the insulating trolley wire 5 moves in the mounting hole 2a of the C support fitting 2, and the shape of the curved section is maintained so that the conveying device moves smoothly.

It is a figure which shows 1st embodiment of this invention, (a) is a top view, (b) is a front view, (c) is a fragmentary sectional view of a front view. It is a figure explaining the relaxation operation | movement of this embodiment when an insulated trolley line expand | swells and is displaced, (a) is a figure which shows the displacement form in a curve area, (b) is a figure in the range enclosed with the dashed-dotted line It is an enlarged view explaining the relaxation operation | movement by 1 embodiment. It is a fragmentary sectional view of the side view which shows 2nd embodiment of this invention. It is a figure explaining the relaxation operation of this embodiment when an insulation trolley wire expands and is displaced, (a) is a steady state, (b) is a figure showing the state which relaxed the displacement by thermal expansion in a curve section, (c) is a figure which shows the state which relieve | moderated the displacement by heat contraction. It is a figure which shows 3rd embodiment of this invention, Fig.5 (a) is a side view, (b) is the aa partial sectional view of a front view. It is a perspective view which shows the conventional horizontal arrangement type insulated trolley track. It is a perspective view which shows the conventional vertical arrangement type insulated trolley track. It is a figure which shows the shape change of the curve area by the displacement of the insulation trolley line of the conventional insulation trolley line.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Laying apparatus 2 Support metal fittings 2a, 2b Mounting hole 2c Mounting groove 3 Clamp 3a Connection part 3b Support part 3c Support shaft 3d, 3d ₁ , 3d _2, Guide spring 4a, 4b Sliding member 5 Insulating trolley wire 5a Insulating trolley wire 5b Insulating Trolley wire 10 Joint 11 Fixed clamp 12 Sliding clamp 13 Hanger bracket

Claims (2)

With support brackets and clamps,
It said support bracket has a structure for moving the clamp for supporting the insulation trolley line to absorb thermal expansion or thermal contraction of the line of the curved section in accordance with the movement of the curved section of the line of the insulating trolley wire With mounting holes ,
A connecting portion that moves in a substantially normal direction of the insulated trolley wire laid along the surface of the attachment hole in the attachment hole according to the movement of the curved section of the insulation trolley wire; and the connection An apparatus for laying a curved section having an insulating trolley wire fixing structure including an insulating trolley wire supporting portion connected to the portion. The mounting hole is in the shape of elongated holes, according to claim 1, characterized in that the major axis direction of the long hole is arranged to coincide with the direction approximately normal curved laying has been insulated trolley lines Laying device for curved sections.

Images