JP3657728B2 - Section insulator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a section insulator of an electric railway, and an object thereof is to reduce impact during pantograph traveling and to ensure high insulation in traveling in both directions of a train.
[0002]
[Problems to be solved by the invention]
As conventional section insulators, there are those shown in FIGS. Two parallel yokes 11 are provided vertically, and each is connected by two insulators. A locking ring 13 is fixed to the lower ends of both yokes, and the tip of the trolley wire T is wound around and locked by this.
Sliders are attached to both trolley lines, and one slider 14 extends from the lever position to the other slider 15 and expands into a Y shape, and both ends warp upward in an arcuate shape. The Y-shaped slider 14 is integrally fixed to the trolley wire at the expanding portion by the support bracket 6, and the support bracket 17 at the foremost end is connected to the trolley wire and the other end is expanded to both sides to slide the slider. 14. The upper ends of both yokes are connected to a suspension line via a turnbuckle 18 and suspended from a structure or the like.
In the above structure, when the train travels from the left to the right in the drawing, the pantograph easily moves from one Y-shaped slider 14 to the other linear slider 15 and travels smoothly, but from right to left When traveling to the left and right, the two left and right sides of the Y-shaped slider are displaced from each other. In the worst case, it may interrupt the slider, and the adjustment of the horizontal surface of the Y-type slider is a very important task.
However, since the adjustment is performed by a plurality of adjustment bolts provided on the support bracket of the Y-shaped slider, the adjustment requires considerable skill. In addition, due to the weight of the insulator, it was likely to become a hard point during pantograph travel, resulting in uneven wear of the slider. Furthermore, due to temperature changes and pantograph sliding contact, a difference in the amount of movement occurs between the trolley wire and the suspension wire, damaging the parallel balance of both yokes, and similarly causing uneven wear due to the hard point of the trolley wire.
Although not shown in the drawings, other conventional examples have a structure in which a trolley wire is connected to both ends of an insulator. In this structure, there is a problem that the carbon content of the pantograph carbon slip plate sticks to the sliding contact surface of the insulator, thereby reducing the insulation.
We want to solve the above-mentioned problems, and to ensure that the Y-slider contact surface of the pantera is horizontal, which is bidirectional, and a section insulator that does not short-circuit even if carbon adheres to the contact surface of the insulator. This is the current situation.
[0003]
[Means for Solving the Problems]
The trolley wire is connected to both ends of the insulating rod. Two sliders, long and short, are used, and the base is fixed to both sides of the trolley wire to hold the insulating rod, and the open end is connected by an inclined separator to form a slider set. Using one pair of this set, the long and short portions are alternately opposed and fixed to the end of the insulating rod at the branch base. Each branch base is supported by two suspension rods that hang from the suspension line, and an insulator chain is interposed between the suspension rods on the suspension line. Apart from this, for example, arms are provided alternately at the tip of the horizontal main pipe of the movable bracket, and the vicinity of the end of the slider on both sides of the insulating rod is supported by four other hanging rods suspended from this arm. The above six hanging rods are provided with turnbuckles and can be independently adjusted in length.
As described above, a section insulator that is lightweight, has bidirectionality, and can reliably adjust and maintain the sliding contact surface with the panter within the same horizontal plane can be obtained.
Of the above members, the insulating rod is in sliding contact with the pant plate like the slider, and the carbon content of the carbon plate is adhered to the lower surface of the insulating rod with time to form a thin layer. This causes deterioration of the insulation of the rod, so even if the carbon component is stuck to the sliding contact surface of the pantograph, a short circuit due to the carbon component is caused by the cut grooves provided so as to pass through the both side walls of the insulating rod. The surface structure should be cut so as to insulate the running direction.
[0004]
DETAILED DESCRIPTION OF THE INVENTION
The drawings will be described. This section insulator is assembled across movable brackets B and B provided on a pair of adjacent columns P and P as shown in FIGS.
The suspension line M is connected to both ends of the insulator series G. The resin insulating rod 1 is below the insulator series G, and the coupling fittings 2 shown in FIGS. A trolley wire T is fastened to the coupling fitting 2 by a push bolt 4. Both the long slider 5 and the short slider 6 are fixed to the fitting 2 with bolts 7 at the bent base. The open ends of both sliders are fixed to an inclined insulating separator 8 and a slider set is formed by three members together with both sliders.
A pair of left and right slider sets are fixed opposite to the end of the insulating rod by coupling fittings 2 in a short and long manner.
The two suspension rods 9 have a turnbuckle structure in which both the slider rod united with the insulating rod 1 are suspended from the suspension line M by the coupling metal suspension 2a and the suspension length can be adjusted.
Apart from this, the horizontal main pipe B of the movable bracket is provided with arms b in staggered directions at the tip, and at the lower ends of the four suspension rods 10 suspended from the ends of the arms, near the ends of the sliders 5 and 6. Can be supported. This is also a turnbuckle structure.
[0005]
As for the insulating rod 1, as described above, in order to prevent short circuit due to carbon adhering, the experiment was repeated for various shapes, but eventually, as shown in FIGS. It was concluded that a structure in which alternate cuts 2b were made on both side walls did not cause a short circuit even if carbon content stuck to the sliding surface of the insulating rod.
[0006]
【The invention's effect】
By adjusting the six suspension rods, the bottom surface of the section insulator that is in sliding contact with the pantograph hull can be adjusted and maintained completely horizontally. Since the tension of the suspension wire is supported by the insulator series and the tension of the trolley wire is supported by the insulating rod, the yoke is unnecessary, thereby reducing the weight and minimizing the hard point of the trolley wire when passing the pantograph Therefore, the impact on the pantograph is reduced, and local wear of the slider and damage to the pantograph sliding plate are reduced. Even if the carbon content of the pantograph boat is stuck to the insulating rod, it is in the groove formed on the sliding contact surface and does not short-circuit. Since the horizontal setting of the Y-type slider and its maintenance are easy, it is possible to ensure equal performance for a bidirectional traveling vehicle. In addition, there is no obstacle to the expansion and contraction of the train line due to temperature changes. As described above, it is possible to achieve high insulation and stable vehicle travel that are not conventional.
[Brief description of the drawings]
FIG. 1 is a front view of a section insulator.
FIG. 2 is a cross-sectional view taken along the line AA in FIG.
FIG. 3 is a side view of FIG. 1;
FIG. 4 is a rear view of the insulating rod.
FIG. 5 is a cross-sectional view of an insulating rod.
FIG. 6 is a front view of a long slider.
FIG. 7 is a plan view of a long slider.
FIG. 8 is a plan view of a coupling fitting.
FIG. 9 is a front view of a coupling fitting.
FIG. 10 is a front view of a hanging rod.
FIG. 11 is a plan view of a conventional structure.
FIG. 12 is a side view of a conventional structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Insulating rod 2 Coupling metal fittings 3 and 4 Bolt 5 Long slider 6 Short slider 7 Bolt 8 Separator 9 and 10 Hanging rod 11 Yoke 12 Insulator 13 Locking ring 14 and 15 Slider 16 and 17 Support metal fitting 18 Turnbuckle P Column B Movable Bracket b Arm G Insulator series M Suspension wire T Trolley wire

Claims (2)

An insulator chain attached to an adjacent structure, with a suspension wire connected to both ends, a resin insulation rod with a trolley wire connected to both ends at the lower corresponding position of the insulator chain, and one end on both sides of the trolley wire A slider set formed by connecting two long and short sliders that are fixed to each other so as to hold the insulating rod by a separator at the open end and a pair of left and right slider sets are alternately fixed to the end of the insulating rod. Bolts, suspension rods that allow both slider sets to be suspended from the suspension line at the bolt position, and the length to be adjusted, and the upper end to be locked to the adjacent structure and vertically support the four points near the open end of the opposing slider set A section insulator composed of four other hanging rods that can be adjusted in length. 2. The section insulator according to claim 1, wherein a rectangular rod-shaped body made of an insulating synthetic resin is provided with a through groove in the center in the longitudinal direction of the lower surface and a plurality of cuts provided alternately on the left and right side walls as an insulating rod.

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