JP6901287B2 - Train line curve drawing device - Google Patents

Description

The present invention holds the trolley lines and catenary lines outward of the curve so that they do not deviate significantly from the center of the track to the inside of the curve in the curved section of the train line, or the pantograph in the straight section of the train line. Knitting For the purpose of preventing wear, the present invention relates to a curve drawing device for a train line for laterally stopping the trolley line so as to deviate in a zigzag manner with respect to the center line of the track.

The trolley wire is pushed up by the current collector and vibrates when the train passes by. The vibration generated in the trolley wire propagates in the traveling direction of the current collector, and the vibration is reflected at the support point of the hanger of the trolley wire or the support point of the suspension wire and propagates in the backward direction. In particular, the vibration propagated in the traveling direction causes a disconnection or the like when the current collector following the current collector collects electricity.
In order to suppress the vibration of this trolley wire, conventionally, a frame body is connected to the lower part of the suspension insulator, and the hook for hanging the suspension wire is supported on the frame body so as to be relatively movable up and down, and the hook is between the frame body and the hook. There are metal fittings and devices that absorb the vibration of the overhead wire by interposing a spring that pulls up the suspension wire (see Patent Documents 1 and 2).
In addition, the piston is held in the cylinder suspended and supported by the suspension wire while applying spring pressure, and the ear that holds the trolley wire is connected to the piston rod, and the trolley wire is driven by the frictional resistance between the cylinder and the piston. There is a hanger with a damper that has a vibration absorbing function for the piston (see Patent Document 3).

Jikken Sho 31-1061 Gazette Japanese Unexamined Patent Publication No. 2001-270348 Japanese Unexamined Patent Publication No. 6-171402

In the metal fittings and devices for suppressing vibrations described in the above-mentioned conventional patent documents 1 and 2, since the suspension wire is supported or the trolley wire is supported by the suspension wire, the vertical vibration generated in these overhead wires is generated. In addition, as a result of being easily affected by displacement due to load changes applied to the trolley wire or overhead wire caused by natural phenomena such as wind pressure, the trolley wire is allowed to move in the horizontal direction, and the pantograph and trolley wire There is also a problem that the contact position does not move stably in the horizontal direction and it is difficult to put it into practical use.
Further, the device for suppressing vibration described in the conventional patent document 3 has a structure of being attached between a suspension wire and a trolley wire, and generally, the material of the suspension wire is iron-based, and that of the trolley wire is copper-based. Therefore, the catenary wire and the trolley wire have different expansion / contraction rates due to temperature changes, and cannot maintain the initial vertical state when they are installed. There is. If the relative positions of the cylinder and the piston rod are adjusted to allow a margin, it is possible to cope with the relative movement of the suspension wire, but the vibration stroke may not be tolerated.
The present invention can absorb the vibration of the trolley wire while following the lateral displacement without being affected by the temperature change of the overhead wire without adjusting the peripheral equipment by installation, and can improve the speed of the train and collect current. The purpose is to improve the performance.

In order to solve the above problems, the curve pulling device 1 of the present invention includes an arm support metal fitting 2, a curve pulling metal fitting 3, and a viscoelastic support metal fitting 11. The arm support metal fitting 2 is supported by a movable bracket B projecting above the track on the base end side, and extends below the movable bracket B substantially along the movable bracket B. The curved pulling metal fitting 3 is pivotally supported on the tip end portion of the arm support metal fitting 2 in the vertical direction on the base end side, extends substantially along the lower side of the arm support metal fitting 2, and has a trolley wire T on the tip end side. To grasp. The viscoelastic support metal fitting 11 connects the middle of the curved pulling metal fitting 3 to the upper arm support metal fitting 2, and pivotally supports the upper end portion of the arm support metal fitting 2 so as to be movable within a predetermined range in the extending direction of the trolley wire T. It is provided with an upper support member 11c to be formed, and a lower support member 11b that is adhered to the upper support member 11c via a viscoelastic body 11d and the lower end portion is fixed in the middle of the curved pulling metal fitting 3. The viscoelastic body 11d suppresses the relative displacement between the upper support member 11c and the lower support member 11b due to the vertical swing of the curved pulling metal fitting 3, and absorbs the vibration of the trolley wire T.

The curve drawing device of the present invention can be installed without adjusting the peripheral equipment thereof, can effectively absorb the vibration of the trolley wire caused by pushing up the pantograph, and can improve the speed of the train and the current collecting performance. it can. The trolley wire is fixed horizontally by the curved metal fittings, and the upper support member can move within a predetermined range in the extending direction of the trolley wire, so that the trolley wire can be moved in the vertical direction while following the lateral displacement of the trolley wire. The vibration absorption function works only for this. Since the structure is not installed between the suspension wire and the trolley wire, the support position of the trolley wire does not change, and the desired vibration suppression effect can be maintained regardless of the difference in expansion / contraction ratio between the suspension wire and the trolley wire due to temperature changes. ..

It is a front view of the installation state of the curve drawing device for a train line which concerns on this invention. It is a front view of the curve drawing device which concerns on this invention. It is a front view of a viscoelastic support metal fitting. It is a vertical sectional view of a spring unit. It is a front view of a push-up spring. It is a front view of the push-up spring which concerns on other embodiment.

Embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, the curve drawing device 1 of a train line includes an arm support metal fitting 2, a curve pulling metal fitting 3, and a viscoelastic support metal fitting 11, and a movable bracket B projecting upward from a support column or the like on the side of the track. It is supported by such as. The curved pulling metal fitting 3 is pivotally supported by the tip end portion of the arm support metal fitting 2, and supports the trolley wire T on the tip end side.

As shown in FIG. 2, the arm support metal fitting 2 includes a mounting portion 5, a main body portion 6, and a connecting portion 7, and is supported by the horizontal pipe P of the movable bracket B at the mounting portion 5. The main body 6 extends diagonally downward along the horizontal pipe P. The connecting portion 7 pivotally supports the curved pulling metal fitting 3 with a horizontal pivot 7a.

As shown in FIG. 3, the mounting portion 5 includes a band 5a that holds around the horizontal pipe P, a bearing portion 5b that has brackets that face each other at intervals in the extending direction of the trolley wire T, and a bearing portion. It includes a pivot 5c erected on the 5b.

The curved pulling metal fitting 3 includes a pull tab 8 on the proximal end side, a bow-shaped arm pipe 9 continuous thereto, and a grip portion 10 on the distal end side.

As shown in FIG. 4, the pull tab 8 is pivotally supported by the connecting portion 7 of the arm support fitting 2 at the eye portion 12 on the proximal end side so as to be rotatable in the vertical direction by the pivot axis 7a, and is provided with a spring unit 13 in the middle. , The tip portion 14 is compressed and connected to the arm pipe 9.

The spring unit 13 includes a spring receiving cylinder 15 having a closed upper end, a pulling rod 16, and a viscoelastic spring 17. The pulling rod 16 penetrates the spring receiving cylinder 15 up and down, is pivotally supported by the arm support metal fitting 2 at the upper end eye portion 16a by the pivot shaft 6a, and has the spring receiving seat 16b at the lower end. A viscoelastic spring 17 is inserted between the spring receiving seat 16b and the inner upper end of the spring receiving cylinder 15.

The viscoelastic spring 17 is covered by winding a tape-shaped viscoelastic sheet 17b around the outer circumference of a spring steel coil 17a. For the viscoelastic sheet 17b, for example, an acrylic resin is used. The viscoelastic sheet 17b absorbs vibration by giving resistance to the expansion and contraction movement of the coil 17a without changing the spring force of the coil 17a. The viscoelastic spring 17 may be formed, for example, by covering the outer circumference of the coil 17a with a cylindrical viscoelastic body, or by another method such as molding, as shown in FIG.

The viscoelastic support metal fitting 11 is an outer plate 11c, which is an upper support member pivotally supported by the pivot 5c at the upper end, and an inner support member, which is a lower support member fixed to the arm pipe 9 via a band 11a at the lower end. It includes a plate 11b and a viscoelastic body 11d that is interposed between the inner plate 11b and the outer plate 11a and adheres the two to each other. The outer plate 11c is relatively movable in the lateral direction by a predetermined distance on the pivot 5c. When the arm pipe 9 vibrates in the vertical direction, relative movement occurs between the inner plate 11b and the outer plate 11c, and the viscoelastic body 11d gives resistance to this to absorb the vibration.

When the trolley wire T is pushed up by the current collector when the train passes, it vibrates. Along with this, the curved pulling metal fitting 3 that grips the trolley wire T swings up and down with respect to the arm supporting metal fitting 2 about the pivot 7a. At this time, the viscoelastic sheet 17b gives resistance to the expansion and contraction of the viscoelastic spring 17 of the viscoelastic support mechanism portion 13, and absorbs the vibration of the trolley wire. At the same time, the viscoelastic body 11d of the elastic support metal fitting 11 gives resistance to the relative movement of the outer plate 11c and the inner plate 11b, and absorbs the vibration of the trolley wire.

When the trolley wire T moves in the extending direction, the movable bracket B swings left and right. At this time, since the outer plate 11c moves relative to each other in the lateral direction on the pivot 5c, the mounting dimension of the elastic support fitting 11 is kept within a certain range.

The curve drawing device 1 can also be used to hold an auxiliary suspension wire (not shown) erected above the trolley wire T.

1 Curve pulling device 2 Arm support metal fittings 3 Curve pulling metal fittings 5 Mounting metal fittings 5a Band 5b Side plate 5b Side plate 5c Horizontal axis 6 Main part 6a Pivot axis 7 Connecting part 7a Pivot axis 8 Puller 9 Arm pipe 10 Grip part 11 Viscoelastic support metal fittings 11a Band 11b Inner plate 11c Outer plate 11d Viscoelastic body 12 Eye part 13 Spring unit 14 Connection part 14a Protruding piece 14b Connection cylinder 15 Spring receiving cylinder 16 Pulling rod 17 Viscoelastic spring 17a Coil 17b Viscoelastic band 16a Pin hole 16b Spring receiving seat 16c Fixed Nut B Movable bracket S Suspended wire T Trolley wire

Claims (3)

An arm support bracket whose base end side is supported by a support such as a movable bracket protruding above the track and extends substantially along the lower side of the movable bracket, and a base end side is vertically attached to the tip of the arm support bracket. A curved pulling metal fitting that is swingably pivotally supported and extends substantially along the lower side of the arm supporting metal fitting and grips a trolley wire toward the tip end side, and connects the middle of the curved pulling metal fitting to the upper arm supporting metal fitting. Equipped with a viscoelastic support bracket,
The viscoelastic support metal fitting is fixed in the middle of the curved pulling metal fitting at the lower end portion and the upper support member which is pivotally supported by the arm support metal fitting at the upper end portion so as to be movable within a predetermined range in the extending direction of the trolley wire. It is provided with a lower support member to be formed and a viscoelastic body that connects the two support members by interposing between the two support members and adhering to the two .
A curve drawing device for a train line, characterized in that the viscoelastic body suppresses the relative movement between the upper support member and the lower support member due to the vertical swing of the curve drawing metal fitting. The curved pulling metal fitting further comprises a spring unit connected to the upper arm supporting metal fitting via a spring.
The curve drawing device for a train line according to claim 1, wherein the spring of the spring unit is formed by coating the outer circumference of a coil made of spring steel with a viscoelastic body. The arm support bracket includes brackets facing each other at intervals in the extending direction of the trolley wire, and a pivot shaft erected on the bracket.
The upper support member of the viscoelastic support fitting comprises two parallel outer plates pivotally supported on the pivot axis so as to be movable in the axial direction thereof.
The lower support member of the viscoelastic support fitting comprises an inner plate that is adhered between the outer plates via a viscoelastic body and fixed in the middle of the curved pulling bracket at the lower end portion. The curve drawing device for the train line according to 1.

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