JP2009241690A - Spring type hanging apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spring type hanging apparatus in which its structure is simple and its manufacturing cost is reduced. <P>SOLUTION: This spring type hanging apparatus includes either a plate-like or a rod-like hanging body 1, the outside part of this hanging apparatus body 1 is formed with an arcuate part 2 acting as a bulged-out part and then a hard point at the hanging point is eliminated by applying this arcuate part 2 with a spring resiliency. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a spring-type rack device that bridges a trolley line or an auxiliary bridge line in an overhead railway line of an electric railway.

  In recent years, in large metropolitan areas, with the aim of simplifying facilities and improving maintainability, there are increasing examples of adopting so-called feeder-carriage type train lines that serve as feeders and overhead lines.

  FIG. 6 is a drawing-substituting photograph showing a track of an electric railway having a conventional electric railway type train line, and FIG. 7 is a drawing-substituting figure showing a conventional apparatus (hanger) for mounting a trolley line of the electric railway. It is a photograph.

  In these drawings, 100 is a rack device (hanger) for hanging a trolley wire, 101 is a hinge body, 102 is a hinge wire, 103 is a protective cover, 104 is a trolley wire to be hanged, and 105 is a trolley wire. It is a holding member. In addition, in these figures, although the overhead wire is comprised by two, it may be comprised by one. In the following figure, a single overhead wire is shown.

  In such a feeder-type train line, local wear of the trolley line accompanying the separation of the pantograph often becomes a problem. One of the reasons is that the mechanical impedance of the overhead wire is larger than that of the trolley wire, so that the reflection coefficient of the trolley wire wave at the hanger attachment point is high and the so-called hard point degree is large.

In order to eliminate the hard point at the hanger attachment point of such a feeder-type train line, a vibration-proof trolley wire hanger having a rubber elastic body having elasticity has been proposed (see Patent Document 1 below). .
Japanese Patent No. 3332815

  In the above-described vibration-proof trolley wire hanger, a separate rubber elastic body is attached to the curved portion of the hanger bar. Therefore, there is a problem that the number of components increases and the manufacturing cost is high, and the construction cost is increased to be adopted for all hangers.

  In view of the above situation, an object of the present invention is to provide a spring-type frame device that has a simple structure and reduced manufacturing costs.

In order to achieve the above object, the present invention provides
[1] A spring-type frame device is provided with a plate-shaped or rod-shaped frame main body, a bulge is formed on the outside of the frame main body, and the bulge is given spring elasticity, whereby the frame It is characterized in that the hard point at the point is eliminated.

  [2] The spring-type frame device according to [1], wherein the bulging portion is an arc-shaped portion.

  [3] The spring-type frame device according to [1], wherein the bulging portion is a triangular portion.

  [4] The spring-type frame device according to [3], wherein the bulging portion includes a plurality of wave-shaped portions.

  [5] In the spring-type rack device according to any one of [1] to [4] above, the vibration of the rack device itself can be vibrated or added by adding a damping member to the main frame body. It is characterized by reducing the wave of the line.

  [6] The spring-type rack device according to [5], wherein the line to be bridged is a trolley line or an auxiliary rack line.

  Here, the platform device includes a so-called hanger or dropper that mounts a trolley wire or an auxiliary platform wire.

  ADVANTAGE OF THE INVENTION According to this invention, the structure which is simple and can reduce the manufacturing cost can provide the spring-type rack apparatus.

  The spring-type frame device of the present invention includes a plate- or rod-shaped frame main body, a bulge is formed on the outside of the frame main body, and the bulge is given spring elasticity. Eliminate hard spots at points.

  Hereinafter, embodiments of the present invention will be described in detail.

  FIG. 1 is a configuration diagram of a spring-type rack device according to a first embodiment of the present invention, FIG. 1 (a) is a front view thereof, and FIG. 1 (b) is a side view thereof.

  In these drawings, reference numeral 1 is a stainless steel bar, and the main body of the frame is formed by folding the stainless steel bar so as to be symmetrical to each other, and 2 is an arcuate portion as a bulging portion formed on the main body 1 of the rack. (Annular part). 3 is an anti-vibration rubber tool as a damping member for reducing vibration of the platform device itself or wave motion of the platform line, 4 is a platform line, 5 is a protective cover for the platform line 4, and 6 is installed. A trolley wire as a wire 7 is a gripping member for the trolley wire 6.

  In this way, it is made of a stainless steel bar, and an arcuate part 2 as a bulging part is formed in the middle of the frame main body 1 which is folded back so as to be symmetrical, and the acting force in the axial force direction is formed. With respect to the magnitude | size, spring elasticity is provided by the circular arc-shaped part 2 displacing.

The ratio between the force and the amount of deformation when a force is applied above and below the arcuate portion 2, that is, the equivalent spring constant, is given by k = EI / (0.149 × r ³ ) assuming an annular shape. Here, EI is the bending rigidity of the main frame body, and r is the radius of the ring.

  Considering a commonly used 2 × 15 mm stainless steel bar, when r = 0.1 m, k = 13.4 kN / m, and a spring constant comparable to that of a conventional vibration-proof trolley wire hanger can be obtained.

  If this method is used, a conventional stainless steel bar is used, and only a bending process of providing an arcuate portion in the middle is added. Therefore, a rack device can be provided at the same price as a conventional product. A desired spring constant can be obtained by adjusting the radius of the arcuate part (annular part) 2.

  Further, by adhering or attaching the vibration isolating rubber tool 3 to the rack body, it is possible to reduce vibration of the rack apparatus itself or wave motion of the trolley wire 6.

  Next, characteristics of the spring-type frame device of the present invention will be described.

  2A and 2B are diagrams showing the characteristics of the spring-type frame device of the present invention. FIG. 2A is a characteristic diagram of axial force and displacement, and FIG. 2B is a characteristic diagram of spring constant and displacement.

  Here, a characteristic measurement test of an annular spring-type rack device having a radius of 0.09 m was performed. When the axial force is F (N) and the displacement is x (m), the spring constant k (N / m) can be expressed by a tangent of F / x.

  FIG. 3 is a block diagram of a spring-type frame device according to a second embodiment of the present invention. FIG. 3 (a) is a front view thereof, and FIG. 3 (b) is a side view thereof.

  In these drawings, reference numeral 11 is a stainless steel bar, and the stainless steel bar is folded back so as to be symmetrical and opposed to each other, and 12 is an arcuate portion as a bulging portion formed on the hinge main body 11. (Annular part), 13 is formed by vulcanizing and adhering anti-vibration rubber as a damping member to reduce vibration of the platform device itself or wave motion of the line to be installed. It is attached. Reference numeral 14 denotes an overhead wire, 15 denotes a protective cover for the overhead wire 14, 16 denotes a trolley wire as a wire to be erected, and 17 denotes a gripping member for the trolley wire 16.

  In the second embodiment, the vibration isolating rubber 13 is provided inside the arcuate portion (annular portion) 12 in order to enhance the vibration damping function.

  FIG. 4 is a block diagram of a spring-type frame device according to a third embodiment of the present invention, FIG. 4 (a) is a front view thereof, and FIG. 4 (b) is a side view thereof.

  In these figures, reference numeral 21 denotes a stainless steel bar, and a stainless steel bar body is formed by folding the stainless steel bar so as to be opposed to each other. Reference numeral 22 denotes a triangular portion as a bulging portion formed on the main frame body 21. , 23 is a vibration isolating rubber tool as a vibration control member for reducing vibration of the platform device itself or wave of the platform line, 24 is a platform line, 25 is a protective cover for the platform line 24, and 26 is a platform. A trolley wire 27 is a gripping member for the trolley wire 26.

  In the third embodiment, in order to enhance the vibration damping function, the vibration isolating rubber tool 23 is provided on the frame body.

  FIG. 5 is a block diagram of a spring-type frame device according to a fourth embodiment of the present invention, FIG. 5 (a) is a front view thereof, and FIG. 5 (b) is a side view thereof.

  In these drawings, reference numeral 31 is a stainless bar, and the stainless steel bar is folded back so as to be symmetrical and opposed to each other, and 32 is a plurality of wave shapes as bulging portions formed on the hinge main body 31. , 33 is a vibration isolating rubber tool as a damping member for reducing vibration of the platform device itself or wave of the platform line, 34 is a platform line, 35 is a protective cover for the platform line 34, and 36 is a platform A trolley wire 37 as a suspended line is a gripping member for the trolley wire 36.

  Further, in order to enhance the vibration damping function, a vibration isolating rubber tool 33 is provided on the main frame body.

  In each of the above-described embodiments, in order to enhance the vibration damping function, the vibration isolating rubber tool and the rubber vibration isolating rubber are vulcanized and bonded. Alternatively, the main frame body may be a vibration damping steel plate. .

  According to the present invention, the following effects can be achieved.

  (1) It is possible to eliminate the hard point at the point of the power train-type train line, to prevent the pantograph from being separated, and to reduce the local wear of the trolley wire. Moreover, since the material cost is low, the burden on the railway operator is small, and the structure is simple, so the burden on maintenance is small. As a result, the service life of the equipment can be extended and the efficiency of maintenance can be improved.

  (2) Since elasticity is imparted to the main body of the rack itself, there is a function of mitigating irregularities in the height of the trolley wire due to an error in the position of mounting the rack apparatus, and equipment accuracy can be improved.

  (3) Since a conventional stainless steel bar is used as the main body of the frame, conventional accessories (hangers, ears, etc.) can be used as they are, and the burden on the railway operator is small. In addition, since the curvature of the main body is made larger than the conventional curvature due to the degree of deformation of the bulging part of the main body, no special maintenance / inspection is required from the viewpoint of fatigue damage.

  (4) The axial force acting on the rack device can be roughly grasped by the degree of deformation of the bulge portion of the rack body. For example, as shown in FIG. 1, FIG. 3 or FIG. 4, if the arcuate part (annular part) is a perfect circle, a normal force is applied, and the arcuate part (annular part) is elliptical in the vertical direction. In this case, a normal or higher force is applied, and when the arc-shaped portion (annular portion) is elliptical in the lateral direction, a normal or lower force is applied. This is effective in grasping the overhead line state during the site patrol.

  In addition, this invention is not limited to the said Example, What is necessary is just to be able to form a bulging part and to have elasticity in the platform main body itself, and various deformation | transformation can be aimed at.

  The spring-type frame device of the present invention can be used as a spring-type frame device with a simple structure and reduced manufacturing costs.

It is a block diagram of the spring-type rack apparatus which shows 1st Example of this invention. It is a figure which shows the characteristic of the spring-type frame apparatus of this invention. It is a block diagram of the spring-type rack apparatus which shows 2nd Example of this invention. It is a block diagram of the spring-type rack apparatus which shows 3rd Example of this invention. It is a block diagram of the spring-type rack apparatus which shows 4th Example of this invention. It is the photograph instead of drawing which shows the track | orbit of the electric railway which has the conventional feeder-carriage type train line. It is the photograph instead of drawing which shows the platform apparatus (hanger) apparatus which bridges the trolley line of the conventional electric railway.

Explanation of symbols

1,11,21, 31 Canopy body 2,12 Arc-shaped part (bulging part) (annular part)
3, 23, 33 Anti-vibration rubber tool (damping member)
4, 14, 24, 34 Overhead wire 5, 15, 25, 35 Protective cover 6, 16, 26, 36 Trolley wire 7, 17, 27, 37 Trolley wire gripping member 13 Anti-vibration rubber (damping member)
22 Triangular part
32 Multiple wave shapes

Claims (6)

  It is provided with a plate-like or rod-like frame main body, forming a bulging portion on the outer side of the frame main body, and providing the spring elasticity to the bulging portion, thereby eliminating the hard point at the point of the rack. A spring-type frame device.   2. The spring-type rack device according to claim 1, wherein the bulging portion is an arc-shaped portion.   2. The spring-type frame device according to claim 1, wherein the bulging portion is a triangular portion.   4. The spring-type frame device according to claim 3, wherein the bulging portion is formed by a plurality of wave-shaped portions.   5. The spring-type frame device according to claim 1, wherein a vibration damping member is added to the frame body to reduce vibration of the frame device itself or a wave of a line to be mounted. 5. A spring-type frame device characterized by being illustrated.   6. The spring-type rack apparatus according to claim 5, wherein the line to be bridged is a trolley line or an auxiliary rack line.