JPS5893628A - Vertically moving type curved wire puller - Google Patents

Abstract

PURPOSE:To enable prevention of unsymmetical wear, by a method wherein a cylindrical casing is hung down on a position corresponding to a suspension wire holder, and a stopper plate and an ear are provided respectively on the upper and the lower ends of a rod which penetrates through a lower lid of the cylindrical casing ascendably and descendably, in a holder of an electric wire of a train within a curved section. CONSTITUTION:Metal fittings 3 are secured on a main pipe 1 so as to enable adjustment of a location, a suspension wire holder 3a and a casing 4 are secured and hung down on the upper and the lower parts of the fittings 3 respectively through an upper lid 4a, a stopper 5a and an ear E are installed respectively on the upper and the lower ends of a rod 5 which penetrates through a lower lid 4b ascendably and descendably, and a ball device 8 is inserted into an annular space between the rod 5 and the casing 4. Then, an electric wire T of a train is supported by a hanger H, and a curved wire section is formed by drawing the wire T to a support P and pushing it out of the support P. The ear E is descended smoothly by the rod 5 and a range for ascent and descent of the rod 5 is limited by the stopper plate 5a, in such a pantograph wherein the train advances over pushing up the electric wire T of the train. Then, the main pipe 1 is prevented from touching the pantograph and unsymmetrical wear is not generated, too.

Description

DETAILED DESCRIPTION OF THE INVENTION For supporting overhead contact lines in curved sections, a structure in which a steady vibrator and a curve trigger are attached to a movable bracket is known. One end of the curved metal fitting is pivotally connected to the free end of the steady vibration vibrator, and the ear portion of the other end moves up and down in an arc around the pivot point as the pantograph passes. Although the curved trigger is curved into an arched shape, there is always the fear of getting too close to the pantograph, and the overhead contact line wears out like MJII.

The present invention eliminates this disadvantage and also significantly simplifies the overall construction.

Examples will be described with reference to the drawings. The main pipe 1 is pivoted to the support P so that it can rotate horizontally. One end of the diagonal pipe 2 is also pivotally connected to the support P, and the other end is locked to the center of the main pipe, so that it can rotate integrally with the main pipe. The mounting bracket 3 consists of a mounting portion for attaching to the main pipe 1 and a hanging wire holder 3a, and is fixed to the exposed end of the main pipe so that its position can be adjusted, and causes the hanging wire holder 3a to protrude upward. The case 4 is a cylindrical body having upper and lower lids 4a and 4b, and is fixedly suspended from the upper lid 4a to the lower surface of the main pipe at a position corresponding to the hanging wire. The rod 5 passes through a hole bored in the lower lid 4b of the case so as to be able to rise and fall freely, and a stopper plate 5a is fixed to the upper end.
Ear E is attached to the lower end. Case 4 and rod 6
A ball device B consisting of a circle fi6, a retainer 7 and a 1@8 is inserted into the annular space between them. The circle 116 and the rod 5 are in a relationship, so to speak, as an outer ring and an inner ring of a ball bearing, and the rod 5 can be moved up and down easily.

The present invention is constructed as described above, and as shown in FIG. 1, it is attached to the main pipe to support the overhead line holder and the overhead contact line T. The overhead contact line T is supported by hangers H on both sides of the device, and the upper end stopper plate 5a of the rod 6 is located at the center of the case 4 in the vertical direction. In this state, the overhead contact line is pulled toward or pushed out from the support P to form a curved section. As the pantograph advances while pushing up the overhead contact line T, force is applied to the ear E in both horizontal and vertical directions, but the rod of this device moves up and down smoothly in response to the vertical component of this force. However, the range of elevation is limited by the stopper plate.

FIG. 5 shows another embodiment. The protection f19 is fitted into the outer periphery of the case 4 so as to be able to move up and down, and is fixed and integrated with the rod 5 at its lower lid. The outer MIO is located further outward and has an upper portion fixed to the upper lid 4a of the case 4.

A spring 11 is inserted between the protection tube 9 and the outside 1110 so that it can be compressed by lowering the protection f19. In this structure, the protective tube serves to prevent dust and other particles from entering the case 4, and the spring 11 buffers downward impact when the rod 5 vibrates.

A conventional curve pulling device has a structure incorporating a plurality of members such as a long steadying pipe and a curve pulling fitting. For this reason, the main pipe must also be long. Even so, there remains the fear of contact with the pantograph, and uneven wear of the overhead contact line due to the swinging of the curved trigger is unavoidable. In contrast, the present invention allows for the incorporation of a compact case. Therefore, the main pipe is short and can be used for both pushing and pulling. The fear of contact with the pantograph is completely eliminated, and there is no uneven wear on the overhead contact line. The above are the features of the present invention.

[Brief explanation of drawings]

Fig. 1 is a front view of the present invention, Fig. 2 is a side view of the same, Fig. 183 is a front view of the ball device, Fig. 4 is a plan view of the same, and Fig. 5 is a front view of another embodiment. 1...Main pipe, 2...Diagonal pipe, 3...
Mounting bracket, 3m...suspension wire holder, 4...case,
5... own rod, em... stopper plate, 6...
Cylinder, 7...retainer, 8...ball, 9...
Protective cylinder, 10...Outer cylinder, 11...Spring, P...
・・Prop, E・・Ear, 80000 ball device, H・・
・・Hanga, Tou・・Suspension line ST・・・Train line. Patent applicant: Sanwa Chikki Co., Ltd. Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] The free end of the main pipe is attached to a movable bracket that has a main pipe pivotably connected to the support for horizontal rotation, and a diagonal pipe whose one end is also pivotally connected to the support and the other end is locked to the center of the main pipe. A mounting bracket that is fixed to the side so that its position can be adjusted and has a hanging wire holder on the top surface, a cylindrical case that has a lower lid and is fixed and suspended from the lower surface of the main pipe at a position corresponding to the hanging wire holder, and a cylindrical case that is A vertically movable curve drawing device consisting of a rod that passes freely up and down through the lower lid, has a stopper plate fixed to its upper end, and has an ear attached to its lower end.