JPH06255407A - Support insulator for rigid body electric overhead line - Google Patents

Abstract

PURPOSE:To make a rigid electric overhead line longer and larger by lockedly pressing a long and large rigid electric overhead line against a tie plate mounted on a support insulator for a rigid electric overhead line by a spring and providing a spring support fastening device for restricting creeping of the long and large rigid electric overhead line. CONSTITUTION:Rigid electric overhead lines 13, 23, 33 which are located towards the center from support insulators 11, 21, 31 are immobile sections supported by the support insulators 11, 21, 31 without any movement. In mobile sections from both ends to the balancing support insulators 11, 21, 31, rigid electric overhead lines 13, 23, 33 creep while being restricted by leaf springs 12, 22, 32. However, the movement by creeping is so less that the support insulators 11, 21, 31 can support the rigid electric overhead lines 13, 23, 33 without any trouble. Therefore the support insulators 11, 21, 31 for rigid electric overhead lines for supporting leaf springs can support safely a long and large rigid electric overhead lines.

Description

Detailed Description of the Invention

[0001]

[Industrial application] Regarding support insulators for rigid electric power lines,
More specifically, the present invention relates to a rigid trolley wire support insulator that holds a rigid trolley wire with a spring to suppress expansion and contraction of the rigid trolley wire to make it a long rigid trolley wire.

[0002]

2. Description of the Related Art Rigid train wires are stretched due to temperature changes, and an excessive force is applied to the supporting portion to restrain the expansion and contraction of the rigid train wires. Therefore, the rigid train wires are conventionally mounted on a support insulator. In addition, the rigid train line has a play space so that the rigid train line can freely expand and contract.

[0003]

When the pantograph passes through the seam due to the play, obstacles such as impact and abrasion on the contact plate and disconnection of the pantograph occur. Therefore, in order to eliminate these drawbacks, in the future, we will continue to make the long-sized rigid train line by welding the rigid train line to eliminate the seams. Therefore, it is necessary to develop a support insulator that supports the long and large rigid electric power lines in order to promote the development of the long and large rigid electric power lines. In other words, if the expansion and contraction of the long and large rigid electric power line cannot be suppressed by the support insulator, the long and large rigid electric power line cannot be supported. Moreover, if the rigid contact line is completely fixed by the supporting insulator, the supporting insulator will be damaged by applying an unreasonable force such as an axial force due to the rigid contact line. It is difficult to solve these problems by the conventional method of mounting the rigid body line on the supporting insulator. The object of the present invention is now to provide a method for solving these problems.

[0004]

According to the present invention, as a means for solving the above-mentioned problems, a rigid contact line support insulator is provided with a tie plate provided on a rigid contact line support insulator and a long rigid body. The present invention is characterized in that a spring supporting and fastening device is provided to hold down the trolley wire with a spring and suppress the swelling of the long rigid body trolley wire.

[0005]

The rigid insulator line support insulator of the present invention has a structure in which a rigid integral conductor line is pressed by a spring (a leaf spring or a wire spring) on a tie plate integrated with the support insulator on the support insulator. It is equipped with a device. Therefore, this rigid-body-train-line support insulator keeps the rigid body-carrying wire in a pressed state by the spring, and the frictional resistance force generated by the pressing force of the spring can prevent the rigid body-carrying wire from moving forward.

When restraining the free expansion and contraction of the rigid body line, an axial force is generated inside the rigid body line. This axial force is proportional to the cross-sectional area and the temperature difference. When the fastening device is provided with a resistance force so as to resist the axial force and the forward movement is suppressed, there is a position from the both ends of the long rigid electric power line until the axial force and the resistance force are balanced. The movable section is from both ends of the long and large rigid train line to the point of equilibrium of force. The middle of the movable section formed at both ends is a non-moving section, in which the rigid force line is immovable due to the balance between the axial force and the resistance force. Therefore, the whole portion does not expand and contract, and only the movable section slides and expands under the spring. Therefore, the support insulator is not damaged and the expansion and contraction amount can be suppressed. In addition, the rigid train line will not get damaged. Therefore, it is difficult to use the conventional method of placing a rigid conductor wire on a support insulator and allowing its expansion and contraction, and the method of completely restraining it to make a long rigid conductor wire. Since the supporting insulator can support the axial force of the rigid train line in the movable section, it can be made into a long rigid train line.

[0007]

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a rigid insulator line support insulator 11. The support insulator 11 is provided with a tie plate 15 integrated with the support insulator 11 on the upper portion thereof. The rigid train wire 13 is screwed to the tie plate 15 with a bolt 17a so as to press the bottom portion 16 of the rigid train wire 13 by the leaf spring 12, as will be described later with reference to FIG. The support insulator 11 is installed on a support base 19 provided on a floor 20 via a support metal fitting 18 integrated with the support insulator 11. The insulator portion 11a of the support insulator 11 is made of a normal insulator. The rigid electric train line 13 has a copper bus bar 14 having a small current resistance attached to both sides of the rigid electric train line return portion to prevent heat generation. The rigid contact line has a contact surface 13a facing upward. A support insulator 11 having a fastening device by a leaf spring 12 of the present invention has a tie plate 15 and a rigid electric wire 13 attached to the leaf spring 12.
Since it is stopped by, the action of the rigid train line 13 does not change even if the contact surface of the rigid train line 13 is oriented in any direction.

FIG. 2 shows a contact surface 23 of the rigid train line 23 for contact with the sliding plate.
It is a front view of the rigid insulator line support insulator 21 installed in a side direction. The tie plate 25 integrated with the support insulator 21 is vertically provided on the upper surface of the support insulator 21.
The insulator 21a, the support fitting 28, and the support base 29 are the same as those shown in FIG.
Is the same as.

FIG. 3 shows the contact surface 33 of the rigid train line 33 for contact with the sliding plate.
It is a front view of the rigid insulator line support insulator 31 with a installed downward. As seen in the drawing, the tie plate 35 extends laterally and holds the rigid train wire 33 with the leaf spring 32. The insulator portion 31a, the support fitting 38, and the support base 39 are the same as in FIG. As above, tie plate 15,
Appropriate shapes of 25 and 35 can be applied to the case where the contact surfaces 13a, 23a and 33a of the contact surface are either upward, sideward or downward.

FIG. 4 is a partial view in which the rigid train wire 13 is fastened to the rigid train wire support insulator 11 by the leaf spring 12.
(F) is its plan view, (E) is its plan view (F)
FIG. 9 is a sectional view taken along line AA of FIG. In (E), (a), the bent circular portion of the leaf spring 12 bent into a hairpin shape is a tie plate 15.
And the spring pedestal 15a integrated with the tie plate 15 so that the tip of the leaf spring 12 is the bottom portion 16 of the rigid train line 13.
It is sectional drawing which shows the state screwed by the hexagon bolt 17a so that it may be stopped. The bolt 17b seen at the rear is omitted. (B) of (E) is a cross-sectional view showing a state in which the tie plate 15 is screwed and integrated with the support insulator 11 with bolts 17b. As shown in (F), the rigid train wire 13 is pressed by the leaf springs 12 on opposite sides of the rigid train wire bottom portion 16, respectively, and the tie plate 15 has the bolt 17
It is screwed to the support insulator 11 at b. Tie plate 1
By inserting the adjusting plate 15b between the support insulator 11 and the support plate 11, the tie plate 15 in the height direction and the screwing position of the support insulator 11 can be moved to adjust the position of the rigid train line 13 in the left-right direction. It is possible. When the position adjustment of the rigid train line 13 is not necessary, the upper portion of the support insulator 11 may be shaped like the tie plate 15.

As described above, the leaf spring 1 is an example of the spring.
Although 2, 22, and 32 have been described, a wire spring can be used in exactly the same manner. Any spring can be used as long as it can hold the rigid train wires 13, 23, 33 and suppress the axial force. The rigid insulator line support insulators 11, 21, 31 having such a spring-supported fastening device suppress axial force due to thermal stress generated in the rigid casing wires 13, 23, 33 by pressing the leaf springs 12, 22, 32. To do. In the case of an equilibrium point between this axial force and the deterrent force that resists it, that is, in the case of a long rigid train line, the ends of the rigid train lines 13, 23, 33 are connected to the rigid train lines 13, 23, 3
The supporting insulators 11, 2 in which the resistance force of the supporting insulators 11, 21, 31 suppresses axial force sequentially toward the central portion of 3 and is just balanced
There is a movable section extending from 1 to 31. This support insulator 11, 2
Rigid train lines 13, 23, 33 from the center of 1, 31 are immovable sections supported by the support insulators 11, 21, 31 without moving. Support insulators 11 and 2 balanced from both ends
Rigid train lines 13, 23, 3 in the movable section up to 1, 31
3 moves forward while being restrained by the leaf springs 12, 22, 32. However, the movement due to this movement is small, and the supporting insulators 11, 21, 31 are not hindered, and the rigid electric power line 1
It can support 3, 23, 33. Therefore, the rigid-body power line support insulators 11, 21, and 31 supporting the plate springs can safely support the long and large rigid power line.

[0012]

According to the present invention, the rigid electric power line supporting insulator having the spring-supported fastening device of the present invention constantly presses the rigid electric power line in the pressurized state by the spring and the rigid resistance line is generated by the frictional resistance generated by the tightening force. It suppresses the expansion and contraction of, and suppresses the growth. Further, since the rigid insulator line is not completely fixed by the supporting insulator and the lower portion of the spring is moved forward in the drive section, no unreasonable force is applied and the supporting insulator is not damaged.
Therefore, the support insulator of the present invention can safely support the rigid electric line, and will greatly contribute to the future development of a long rigid electric line.

[Brief description of drawings]

FIG. 1 is a front view of a rigid contact line support insulator in which a contact surface of a rigid contact line is supported upward by a leaf spring fastening device.

FIG. 2 is a front view of a rigid trolley wire support insulator in which a contact surface of the rigid trolley wire is laterally supported by a leaf spring fastening device.

FIG. 3 is a front view of a rigid contact line support insulator in which a contact surface of the rigid contact line is supported downward by a leaf spring fastening device.

FIG. 4 is a partial explanatory view in which a rigid electric power line is fastened by a leaf spring of a rigid electric power line support insulator. (E) is an AA sectional view of (F). (F) is a plan view.

[Explanation of symbols]

 11, 21, 31, ..., Insulators for rigid electric power line 12, 22, 32, ... Leaf springs 13, 23, 33, ... Rigid electric power line 15, 25 , 35, ... tie plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Dai Oyama Daiichi Aichi Prefecture Nakamura-ku, Nakamura-ku 1-Chome 1-4 Tokai Passenger Railway Co., Ltd. (72) Inventor Mitsuhiro Aoki Nagoya-City, Aichi Prefecture Nakamura-ku 1 Station Chome 1-4 Tokai Passenger Railway Co., Ltd. (72) Inventor Hideaki Tsuda 1-4-1, Mei Station, Nakamura-ku, Nagoya, Aichi Prefecture Tokai Passenger Railway Co., Ltd. (72) Inventor Sogo Matsui Isshiki, Hazu-gun, Aichi Prefecture No. 62 Minami-Yashiki, one-color character in the town (72) Inventor Yuya Umeda 5-1-1-15 Ginza, Chuo-ku, Tokyo Within Kowa Kasei Co., Ltd.

Claims (1)

[Claims] 1. In a rigid electric power line, a tie plate provided on a rigid electric power line support insulator is provided with a spring supporting and fastening device for restraining a long rigid electric power line from pushing forward with a spring. A support insulator for a rigid train line, which is characterized in that