JP2002240596A - Section insulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a section insulator for reducing the lopsided wear of a slider by smoothing the passage of a pantograph. SOLUTION: A slider set 4 for supplying power to an electric car between trolley lines T, T, instead thereof, consists of a pair of long and short sliders 11, 12 formed in an approximately Y-shape and fixed to the trolley lines T, respectively, with the long and short ones alternately opposed to each other at both ends of an insulating rod 3. The sliders 11, 12 are fixed to the trolley lines T with two joint fittings 13 and supported on arms 9 of connection fittings 5 with fixed supporting brackets 14 and movable supporting brackets 15. Spider gripping portions of the joint fittings 13 allows the sliders 11, 12 to be vertically adjusted at their supporting positions by changing the positions of screw stems threaded to the arms 9. The movable supporting brackets 15 can be moved up in a relatively movable range to the arms 9 of movable shafts locked by a locking ring while gripping the slider 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a section insulator for dividing an electric power supply range in a train line, and more particularly to a method for reducing uneven wear caused by sliding of a pantograph.

[0002]

2. Description of the Related Art In a conventional section insulator, the ends of suspended wires of adjacent trolley wires whose electric power supply range is divided are connected to each other by insulators, and the ends of the trolley wires are connected to each other below the insulating rods with insulating rods. Connect and insulate them. A pair of long and short pairs of substantially Y-shaped sliders are horizontally fixed along both sides of the insulating rod (Japanese Patent Application Laid-Open No.
No. 230761). The open ends of the sliders are alternately butted to each other, and the long and short sliders are connected by an insulating separator. Each end of the insulating separator is suspended from the structure, and the slider is connected to a fitting for connecting the insulating rod and the trolley wire. In this section insulator, the pantograph slides on the slider instead of the trolley wire when passing through the train.

[0003]

In the above-mentioned conventional section insulator, the rigidity of the short slider is high.
The shock cannot be absorbed when passing through the pantograph. In addition, when a new section insulator is attached to an existing trolley wire, the sliding surface of the trolley wire is already worn and the sliding surface of the slider is lower than the trolley wire. Receives the impact of passing through the pantograph. Therefore, the slider is apt to wear unevenly,
They must be replaced frequently. Therefore, the present invention
It is an object to provide a section insulator which adjusts a vertical position of a slider with respect to a trolley wire, and a slider is flexibly displaced with respect to pushing up of a pantograph, allows the pantograph to pass smoothly, and dramatically reduces uneven wear. I have.

[0004]

According to the present invention, in order to solve the above-mentioned problems, the ends of adjacent suspension lines M, M are connected by an insulator series 2, and the adjacent trolley wires T, T are connected by an insulating rod 3 via a connection fitting 5, and are connected to both sides of the trolley wire T by connection fittings 13,
A pair of long and short sliders 11 and 12 extending along this and fixed to the connection fittings 5 by the support fittings 14 and 15, respectively, and a slider set 4 fixed to the both ends of the insulating rod 3 so as to face the short and long alternately. In the section insulator to be provided, the coupling bracket 13 is configured so that the vertical position of the sliders 11 and 12 can be changed, so that the vertical position relative to the trolley wire T can be adjusted. The end on the rod 3 side is configured to be displaceable upward, and is configured to be elastically pushed up by a pantograph.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. 1 and 2, the section insulator 1 is provided between train lines in adjacent power supply ranges to divide the power supply range on both sides. The section insulator 1 includes an insulator series 2 that connects and insulates the ends of the adjacent suspension lines M, M, an insulating rod 3 that connects and insulates the adjacent trolley lines T, T thereunder, and a trolley. A slider set 4 is provided between the lines T and T to supply electric power to the train instead of these.

The insulating rod 3 is made of FRP and is shown in FIGS.
As shown in FIG. 7, both ends are connected to the connection fitting 5 with bolts 6. The connection fitting 5 holds the end of the trolley wire T with a push bolt 7. On the upper part of the connection fitting 5, there is provided an arm 9 extending in the orthogonal direction and fixed by a bolt 8. Arm 9
Are suspended on the suspension line M by the suspension fittings 10.
The suspension fitting 10 has a turnback structure in which the suspension length is adjustable.

The slider set 4 is composed of two pairs of long and short sliders 11 and 12 each having a substantially Y-shape and fixed in such a manner that the pair of sliders 11 and 12 face each other from both ends of the insulating rod 3 alternately. The sliders 11 and 12 have parallel portions 11a and 12a extending along the trolley wire T, and inclined portions 11b and 12b which are bent near the connection fitting 5 and gradually separate from the insulating rod 3. Both ends of the sliders 11 and 12 are curved upward in order to smoothly enter the pantograph. The sliders 11 and 12 are fixed to the trolley wire T by two connecting fittings 13, and supported by the arm 9 of the connecting fitting 5 by a fixed support fitting 14 and a movable support fitting 15. Slider 1
1 and 12 are connected by an insulating separator 16 which crosses the insulating rod 3 at the free ends of the inclined portions 11b and 12b. Both ends of the insulating separator 16 are suspended from the suspension wire M by the suspension fittings 10.

[0008] As shown in FIGS. 6 to 8, the connecting bracket 13 includes a substantially cross-shaped connecting member 17 and a trolley wire holding portion 18 provided before and after the connecting member 17 for holding the trolley wire T.
And a slider holding portion 19 provided on the left and right of the combined body 17 for holding the sliders 11 and 12.
The trolley wire gripping portion 18 includes one ear piece 18a continuous with the lower end of the combined body 17, and the other ear piece 18b facing the ear piece 18a in the left-right direction. The ear pieces 18a and 18b are fastened by bolts 18c and bite into the trolley wire T to be gripped. Slider grip 19
Are screw shafts 19a respectively inserted into the left and right sides of the coupling body 17.
A lock nut 19b screwed to the screw shaft 19a;
A pair of left and right ear pieces 19c, 19c that are coupled to the lower end of the screw shaft 19a to grip the sliders 11, 12 and a bolt 19d that fastens the ear pieces 19c, 19c are provided. The slider holding portion 19 can adjust the support position of the sliders 11 and 12 up and down by appropriately changing the screwing position with the coupling body 17.

As shown in FIGS. 3 to 5, the fixed support 14 includes a fixed shaft 14a inserted into the arm 9, a lock nut 14b screwed to the fixed shaft 14a, and a fixed shaft 14a.
a pair of left and right ear pieces 14 coupled to the lower end of
c, 14c. The fixed shaft 14a is
And it is screwed and fixed to the lock nut 14b. The pair of ear pieces 14c, 14c is fastened by bolts 14d and grips the long slider 11. The fixed support 14 is
The support position of the slider 11 can be adjusted up and down by changing the screw position of the fixed shaft 14a to the arm 9 and adjusting the fixed position.

The movable supporting bracket 15 is connected to a movable shaft 15a which freely penetrates the arm 9, a stop ring 15b which is screwed onto the upper portion of the movable shaft 15a and is prevented from coming off, and a lower end of the movable shaft 15a. And a pair of left and right ear pieces 15c. The movable shaft 15a is locked from the arm 9 by the retaining ring 15b, and can move upward between the arm 9 and the ear piece 15c. The pair of ear pieces 15c are fastened by bolts 15d and grip the short slider 12.

In this section insulator 1, the long slider 11 is supported by the arm 9 by the fixed support fitting 14 and is fixed to the trolley wire T by the connecting fitting 13, while the short slider 12 is fixed by the movable support fitting 15. Supported by the arm 9, and the trolley wire T
Fixed to When the section insulator 1 is attached to an existing train line, the vertical position of the sliding surfaces of the sliders 11 and 12 is adjusted with respect to that of the trolley wire T even if the sliding surface of the trolley wire T is already worn. Can be.
Therefore, as shown in FIG. 9, if the sliding surfaces of the sliders 11 and 12 are gradually displaced downward from the tips on the side of the parallel portions 11 a and 12 a, the transition of the pantograph from the trolley wire T to the sliders 11 and 12 is achieved. And the impact during passage is reduced.

When the pantograph passes through the section insulator 1, the inclined portion 12 of the short slider 12
b, the movable support fitting 15 supporting the movable slider 15 allows the inclined portion 12b of the short slider 12 to be pushed up. Therefore, even if the inclined portion 12b is shorter than the inclined portion 11b, It has almost the same upward elasticity and absorbs the impact of the pantograph when approaching.

The movable support member 15 for supporting the short slider 12 has a spring interposed between the movable shaft 15a and the arm 9 to appropriately change the resilience against pushing up, and absorbs the impact force when the pantograph enters. May be adjusted.

[0014]

As described above, according to the present invention, the position of the sliding surface of the slider can be adjusted to correspond to the height of the sliding surface of the trolley wire, regardless of whether it is new or existing. Can be adjusted, and the length of the suspension of the short slider can be increased to enhance the resiliency to absorb the shock when passing through the pantograph, so that the uneven wear of the slider can be drastically reduced. And has the effect of withstanding long-term use.

[Brief description of the drawings]

FIG. 1 is a front view of a section insulator according to the present invention.

FIG. 2 is a bottom view of the section insulator.

FIG. 3 is a plan view of a connection fitting, a fixed support fitting, and a movable support fitting.

FIG. 4 is a front view of a connection fitting and a movable support fitting.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a front view of a fitting.

FIG. 7 is a side view of the fitting.

FIG. 8 is a plan view of a coupling fitting.

FIG. 9 is an explanatory view showing displacement of a trolley wire and a sliding surface of a slider.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Section insulator 2 Insulator rod 3 Insulating rod 4 Slider set 5 Connection metal 9 Arm 10 Hanging metal 11 Long slider 12 Short slider 13 Coupling metal 14 Fixed support metal 15 Movable support metal 15a Movable shaft 15b Stop ring 15c Ear piece M Suspension wire T Trolley wire

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroyuki Hayashi 6-5-19 Minamishinagawa, Shinagawa-ku, Tokyo Sanwa Tekki Co., Ltd. (72) Inventor Takehiro Kobayashi 6-5-1 Minamishinagawa, Shinagawa-ku, Tokyo No. Sanwa Tekki Co., Ltd.

Claims (1)

[Claims] 1. An insulator string connecting between ends of adjacent suspension wires, an insulating rod connecting adjacent trolley wires below the insulator string via a connection fitting, and both sides of the trolley wire end. And a slider set having two sets of a pair of long and short sliders respectively supported on the connecting fittings by support fittings, and long and short alternately opposed from both ends of the insulating rod. In the insulator, the coupling bracket is configured to be able to change a vertical position of a slider, and can adjust a vertical position relative to a trolley wire, and the support bracket can displace an end of the short slider on the insulating rod side upward. And a section insulator which is elastically pushed up by a pantograph.