JP3359362B2 - Curve trigger for electric railway - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curve fitting for electric railways which supports a trolley wire by absorbing the wavy vibration when the trolley wire vibrates when passing through a train.

[0002]

2. Description of the Related Art When a train travels, a pantograph contacts a trolley wire at a predetermined pressure to supply power. When the pantograph moves by traveling on a train, the trolley wire is pushed up and a flow is generated to give a wavy vibration to the trolley wire. For this reason, the main arm and the auxiliary arm of the curved trigger that supports the trolley wire and the suspension wire are connected to an arm support bracket attached to a fixed side such as a beam, with a bolt inserted in parallel with the trolley wire longitudinal direction, and each arm. The tightening portion between the base end and the bolt has a backlash so as to absorb and suppress the wavy vibration of the trolley wire.

[0003]

However, since the ear attached to the tip of the main arm is fixed so as to swing in the flow direction of the trolley wire, the ear is attached to the trolley wire at a position where the ear is clamped. A large bending moment will be applied. Therefore, when the train repeatedly passes in this state, material fatigue occurs in the trolley wire, and a breakage accident is likely to occur.

[0004] The present invention is not limited to the base end of the curved trigger,
An object of the present invention is to protect the trolley wire by supporting the ear at the tip of the arm in a manner corresponding to the wavy vibration of the trolley wire, thereby improving safety.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and has a main arm which is located below an auxiliary arm supporting an auxiliary suspension wire at a tip thereof and has a trolley wire held at a tip thereof. Extend the main arm to the arm support bracket
In a curved trigger pivotally supported in a substantially vertical plane including a direction and in a substantially horizontal plane, an ear mounting bracket having a U-shaped cross section is attached to the tip of the main arm so as to swing freely in a substantially horizontal plane. Insert the long ear piece into the groove,
In addition to supporting the trolley wire so that it can swing in a substantially vertical plane including the longitudinal direction , a short ear piece is opposed to this long ear piece,
The gist of the invention is that the trolley wire is clamped by bolts and nuts to absorb the wavy vibration of the trolley wire.

[0006]

[Effect] An ear mounting bracket is protruded from the tip of the main arm of a curved pulling bracket swingably supported by an arm supporting bracket so as to be able to swing, and is disposed in the trolley wire longitudinal direction with respect to this ear bracket. The long ear piece is swingably supported in a seesaw shape , and short ear pieces are provided opposite to both ends of the long ear piece to hold a trolley wire. For this reason, as shown in FIG. 6, the ear holding the trolley wire has a seesaw-like motion in the longitudinal direction of the trolley wire and a wavy motion of the trolley wire when passing through the train due to a synergistic effect of the swinging motion of the trolley wire mounting bracket. Can be reliably absorbed, and can be supported without applying a local load to the trolley wire, thereby improving safety.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of an electric railway curve fitting according to the present invention. In the drawing, reference numeral 1 denotes an arm support fitting of a beam or other curved trigger attached to a fixed body.
The main arm bracket 3 and the auxiliary arm bracket 4 are swingably supported by a shaft 2 supported in the vertical direction of the arm support bracket 1, and the brackets 3, 4 are supported by the respective brackets 3, 4 via shafts 5, 6. The main arm 7 and the auxiliary arm 8 are mounted so as to be swingable up and down and along the flow direction of the trolley wire.

A suspension wire support metal fitting 9 for swinging and holding the suspension wire M is attached to the tip of the auxiliary arm 8, and the tip of the main arm 7 is shaped like a clevis.
The ear fitting 11 is attached so as to be capable of swinging in the horizontal direction via the bracket 8, and the ear piece is attached to the ear fitting 11 so as to be swingable in a seesaw shape.

As shown in detail in FIGS. 3 to 5, the ear mounting bracket 10 has a U-shaped cross section having an eye-shaped clevis 10a protruding at one end side.
b, the eye-shaped clevis 10a is inserted into the clevis 7a at the tip of the main arm, and the shaft 18 is inserted vertically.
And the ear 18 is attached to the main arm by swaging the shaft 18 around the shaft 18.

Then, the long ear piece 11 is inserted between two opposed U-shaped mounting pieces 10c and 10d of the U-shaped mounting bracket 10. Therefore, two mounting pieces 10 opposed to each other are provided.
The interval between c and 10d is substantially equal to the thickness of the long ear piece 11, so that the long ear piece can be inserted between the mounting pieces without play, and mounting holes are formed in both the mounting pieces 10c and 10d. You.

The long ear piece 11 is a short ear piece 1 described later.
Like trolley wire 2 and 13, it is made of the same material as trolley wire to prevent electric corrosion.
At the center of the main body, a mounting hole is drilled so as to match the mounting pieces of the mounting pieces 10c and 10d of the ear mounting bracket, and a shaft 14 is inserted between the mounting holes. On the other hand, it is supported so as to swing in a seesaw shape around the shaft 14, and at the lower part of the long ear piece 11, there are formed claws 11a, 11a for fitting and holding the side grooves of the trolley wire. Drill a bolt hole in the part to connect with the short ear piece.

The short ear pieces 12 and 13 opposed to the long ear piece 11 are integrally formed at the lower end with claw pieces 12a and 13a for clamping the trolley wire in cooperation with the claw piece 11a of the long ear piece. And a bolt 15, 15 between the long and short ear pieces 11 and 12 and 11 and 13 facing each other.
The trolley wire T is clamped by screwing nuts 16 into the nuts 15 and screwing them together.

The long ear piece 11, the short ear piece 12, 1
3 is made of an aluminum material for an aluminum trolley wire, the strength is inferior. For the purpose of reinforcing the metal, a metal having a higher strength than the aluminum material is provided in the ear pieces 11, 12, and 13.
For example, a boss made of stainless steel, brass or the like is fitted into the bolt hole of the ear piece. Therefore, the bolt hole of each ear piece is stepped with a shallow depression on the outer face of the ear piece, and the bosses 20 and 30 are provided with flanges. When the bolts 15 and nuts 16 are fastened, the tightening pressure is reduced by the bosses 20 and 30. And the outer portions of the claw pieces 11a, 12a, 13a of both ear pieces are reinforced by the flange of the boss.

In order to clamp the trolley wire T using the components configured as described above, the clevis portion 7 at the tip of the main arm 7 is used.
a, the ear fitting 11 is attached to the shaft 14 via a shaft 18 so as to be able to swing, and the long ear piece 11 is inserted into a groove between two opposed mounting pieces 10 c and 10 d of the ear fitting 11, and is attached to the shaft 14. After swingably attaching the two long ear pieces 11, two short ear pieces 12 and 13 are opposed to the long ear piece 11, a desired trolley wire T is sandwiched between the long and short ear pieces, and the length is shortened with a bolt nut. Conclude between the two years.

By holding the trolley wire T between the ear pieces in this way, the trolley wire is pushed up and flows on the trolley wire by a pantograph, so that even if the trolley wire causes wavy vibration, In response to the movement, the long ear piece 11 fluctuates about the axis 14 as shown in FIG. 6, so that the ear piece absorbs the wavy motion of the trolley wire, and the trolley wire of the ear piece and the pinching portion between the ear pieces. It can be stably supported without imposing a load on it.

[0016]

According to the present invention, there is provided a curve fitting for an electric railway, wherein a main arm which is located below an auxiliary arm supporting an auxiliary suspension wire at a tip thereof and has a trolley wire at a tip thereof is used as an arm support fitting.
In a substantially vertical plane including the direction in which the main arm extends, and in a substantially horizontal plane
In the curved trigger supported swingably in the plane, the ear mounting bracket having a U-shaped cross section at the tip of the main arm is almost horizontal.
Attached so that it can swing freely in the plane, insert a long ear piece into the groove of this mounting bracket, and almost vertical surface including the trolley wire longitudinal direction
In addition to swingably supporting the inside of the trolley, the short ear piece is opposed to the long ear piece, fastened with bolts and nuts, the trolley wire is clamped, and the wavy vibration of the trolley wire is absorbed. Even if the trolley wire is given a wavy vibration by a pantograph due to traveling by train, the wavy vibration can be absorbed by the swing of the neck of the ear fitting and the longitudinal seesaw swing by the long ear piece, and the trolley wire is loaded. And has the advantage that it can be stably supported.

[Brief description of the drawings]

FIG. 1 is a front view showing the entire shape of a curve trigger for electric railway according to the present invention.

FIG. 2 is a plan view of a main arm.

FIG. 3 is a front view of an ear part.

FIG. 4 is a plan view of the same.

FIG. 5 is a side view of the same.

FIG. 6 is an explanatory view showing a swinging state of an ear piece.

[Explanation of symbols]

 T Trolley wire 7 Main arm 10 Ear mounting bracket 11 Long ear piece 12, 13 Short ear piece 14, 18 Shaft 15 Bolt 16 Nut

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Shigenori Tanimori 2-12 Takaidanaka, Higashi-Osaka-shi, Osaka Denki Co., Ltd. (56) References JP-A-57-70736 (JP, A) JP-A-61 JP-A-218443 (JP, A) JP-A-63-207739 (JP, A) JP-B-35-1808 (JP, Y1) JP-B-49-17857 (JP, Y1) (58) Fields investigated (Int. . ^7, DB name) B60M 1/23 B60M 1/234

Claims (1)

(57) [Claims] 1. A main arm, which is located below an auxiliary arm having a distal end supporting an auxiliary suspension wire and having a trolley wire at the distal end, includes a direction in which the main arm extends in the arm support bracket.
In a curved trigger supported swingably in a substantially vertical plane and a substantially horizontal plane, an ear mounting bracket having a U-shaped cross section is attached to the tip of the main arm so as to swing freely in a substantially horizontal plane ,
Insert the long ear piece into the groove of this mounting bracket , swingably support it in a substantially vertical plane including the trolley wire longitudinal direction , and attach the short ear piece to this long ear piece, and use a bolt nut Curve trigger for electric railways, which is fastened, clamps a trolley wire, and absorbs the wavy vibration of the trolley wire.