Front Rod

Abstract

To provide a front rod adaptable to branch points of various types of turnouts.SOLUTION: A front rod 1 includes rods 21, hooks 23, an adjustment metal fittings 25, and a connection metal fitting 27. The hook 23 is composed of a connection part 65 connected to the rod 21 and a coupling part 67 coupled with a tongue rail through a toothed metal plate 69. In the coupling part 67, a recessed curved surface part 68 is formed in a surface facing a hook mounting surface of the tongue rail. A protruding curved surface part 86 engaged with the recessed curved surface part 68 of the hook 23 is formed in the adjustment metal fitting 25. The engagement of the protruding curved surface part 86 of the adjustment metal fitting 25 and the recessed curved surface part 68 of the hook 23 allows the hook mounting surface of the tongue rail to be inclined and maintains a horizontal sate of the hook 23, thereby enabling coupling with the tongue rail. The hook 23 is adaptable to various kinds of tongue rails having different inclinations of the hook mounting surface and the front rod 1 can be used for branch points of various types of turnouts 5.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a front rod disposed between tongue rails. [Background technology]

[0002] Conventionally, railway tracks are provided with a switch that branches one track into two or more tracks and selectively changes the route of railway vehicles. In general, a switch is configured to change the route of railway vehicles by switching a tongue rail between a position where it contacts a main rail and a position where it is separated from the main rail by a switch. The switch and the tongue rail are connected by a front rod and a connecting rod. The front rod includes a rod arranged between the tongue rails and elbows provided on both ends of the rod and respectively connected to the tongue rails, and is connected to the switch via the connecting rod (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-268772 A Summary of the Invention [Problem to be solved by the invention]

[0004] On railway tracks, there are various types of turnouts and corresponding tongue rails. For this reason, it is necessary to prepare front rods with elbows corresponding to each of the various types of tongue rails, which is costly and requires the preparation of spare front rods.

[0005] The present invention has been made in consideration of the above points, and has an object to provide a front rod that can be used at branch point locations of various turnouts. [Means for solving the problem]

[0006] In order to solve the above problems, the front rod according to claim 1 is used in a switch that changes the course of a railway vehicle, and includes a rod disposed between tongue rails and elbow plates connected to both ends of the rod and respectively joined to the tongue rails. The front rod further includes an adjustment fitting interposed between the tongue rails and the elbow plates, The adjustment fitting has one of a concave curved surface and a convex curved surface having a predetermined radius of curvature formed on a surface opposite to the surface facing the mounting surface of the tongue rail with which the adjustment fitting is engaged, and the elbow has the other of a concave curved surface and a convex curved surface having a predetermined radius of curvature formed on a surface facing the mounting surface of the tongue rail, The adjustment fitting is By the engagement of the concave curved surface with the convex curved surface, The tongue rail of The inclination of the mounting surface is permitted. Ruko It is characterized by: The front rod according to claim 2 is A front rod used in a switch that changes the course of a railway vehicle and includes a rod arranged between tongue rails and elbows connected to both ends of the rod and respectively joined to the tongue rails, the front rod includes an adjustment fitting interposed between the tongue rail and the elbow, the adjustment fitting including a first fitting having one of a concave curved surface and a convex curved surface with a predetermined radius of curvature and a second fitting having the other of a concave curved surface and a convex curved surface with a predetermined radius of curvature, and the adjustment fitting allows inclination of the mounting surface of the tongue rail with which the adjustment fitting is engaged by engagement of the concave curved surface with the convex curved surface. It is characterized by: In the front rod according to claim 3, the adjustment fitting includes the tongue rail and The elbow plate and The tongue rail is characterized in that it has a long hole extending in the vertical direction, through which a fastener is inserted. Effect of the Invention

[0007] According to the front rod of claim 1, , tone The fitting is placed between the tongue rail and the elbow plate. One of a concave curved surface and a convex curved surface having a predetermined radius of curvature is formed on the surface of the adjustment fitting opposite to the surface facing the mounting surface of the tongue rail with which the adjustment fitting of the tongue rail is engaged, and the other of the concave curved surface and the convex curved surface having a predetermined radius of curvature is formed on the surface of the elbow fitting facing the mounting surface of the tongue rail, and by engagement of the concave curved surface having the predetermined radius of curvature with the convex curved surface, Tongue rail The adjustment fitting is engaged. The inclination of the mounting surface is permitted, and the elbow can be kept horizontal. This allows the elbow to be connected to various tongue rails, and the front rod can be adapted to the branch point locations of various turnouts and appropriately positioned between the tongue rails. According to the front rod of claim 2, The adjustment fitting interposed between the tongue rail and the elbow includes a first fitting on which one of a concave curved surface and a convex curved surface having a predetermined radius of curvature is formed, and a second fitting on which the other of a concave curved surface and a convex curved surface having a predetermined radius of curvature is formed, so that the engagement between the concave curved surface and the convex curved surface having a predetermined radius of curvature allows the inclination of the mounting surface with which the adjustment fitting of the tongue rail is engaged, and the elbow can be maintained in a horizontal state. This provides the same effect as claim 1 above. In the front rod of claim 3, when the adjustment fitting is attached to the tongue rail, even if the adjustment fitting is tilted in the vertical direction of the tongue rail, the connecting device can be inserted into the long hole, and the elbow bracket can be properly connected to the tongue rail. [Brief description of the drawings]

[0008] [Figure 1] FIG. [Diagram 2] 2 is a schematic diagram of a front rod, a connecting rod, and a locking rod joint shown in FIG. 1. [Diagram 3] FIG. 2 is a plan view of the front rod shown in FIG. [Figure 4] 3 is a schematic diagram of the elbow plate and adjustment fitting shown in FIG. 2 connected to a tongue rail. [Diagram 5] 5(a) is a plan view, (b) is a side view, (c) is a bottom view, and (d) is a cross-sectional view taken along line AA in FIG. 5(a). [Figure 6] 6A to 6C are views of the adjustment fitting shown in FIG. 3, in which (a) is a plan view, (b) is a side view, and (c) is a cross-sectional view taken along line BB in FIG. 6A. [Figure 7] 3 is a schematic diagram of the elbow plate and adjustment fitting shown in FIG. 2 connected to another tongue rail. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, the configuration of a front rod according to one embodiment of the present invention will be described in detail with reference to Figs. First, as shown in FIG. 1, a switch 5 of a railway track is composed of at least a base rail 7, tongue rails 9, 9, a front rod 1 arranged between the tongue rails 9, 9, a point 11 that changes the position of the tongue rails 9, 9, and a connecting rod 3 and a locking rod joint part 107 that connect the front rod 1 and the point 11.

[0010] The front rod 1 includes a rod 21, an elbow 23, an adjustment fitting 25, and a connection fitting 27 (see Figs. 2 and 3). The rod 21 is a rod-shaped member, and is provided with a plate-shaped connection portion 39 at one end (left side in Fig. 2), and a threaded shaft portion 21A with a threaded portion 37 formed on the outer periphery at the other end (right side in Fig. 3). The threaded portion 37 is formed from the middle portion 21B of the rod 21 to the other end of the rod 21. One end side of a pair of connection plates 41, 41 is joined to the connection portion 39 via an insulating plate 33 so as to sandwich the connection portion 39. The connection portion 39 is formed with a plurality of holes 47 (three holes in the illustrated example) through which a fastener 45 (bolt, nut) is inserted. A plurality of holes 43 through which the fastener 45 is inserted is formed at one end side of the connection plates 41, 41, and a hole 49 through which a connecting pin 51 is inserted is formed at the other end side. The connection portion 39 and the connection plates 41, 41 are connected by three fasteners 45. A connecting portion 65 of the elbow plate 23 is sandwiched between the pair of connection plates 41, 41, and the connection plates 41, 41 are connected to the connecting portion 65 of the elbow plate 23 by a connecting pin 51.

[0011] The rod adjustment part 35 includes a bifurcated extension jaw 53, a positioning nut 55 integral with the extension jaw 53, and a lock nut 57. The bifurcated extension jaw 53 has an insertion hole 59 at its tip through which the connecting pin 51 is inserted, and an insertion hole 63 (see FIG. 2) at its other end through which the threaded shaft part 21A of the rod 21 is inserted. The positioning nut 55 and the lock nut 57 are screwed into the threaded part 37 of the rod 21. Here, when adjusting the length of the rod 21, the lock nut 57 is loosened, the positioning nut 55 is rotated, the extension jaw 53 is moved in the axial direction of the threaded shaft part 21A, and fixed with the lock nut 57. This allows the length of the rod 21 to be appropriately adjusted according to the width of the tongue rails 9,9.

[0012] The elbow 23 is generally L-shaped in plan view (see FIG. 5(a)), and is composed of a connecting portion 65 connected to the rod 21 and a connecting portion 67 connected to the tongue rail 9, 9 via a plate-shaped tooth metal 69. The connecting portion 65 is a plate-shaped portion extending vertically from the center of the side surface of the base end side (the side connected to the rod 21) of the connecting portion 67, and has a pin hole 83 (see FIG. 5(a)). The connecting portion 67 has two long holes 75, 75 extending along its longitudinal direction penetrating the connecting portion 67 in the width direction (left and right direction in FIG. 3). The connecting portion 67 has a concave curved surface portion 68 (curved surface portion) curved with a predetermined radius of curvature in the vertical direction on the surface facing the elbow mounting surface 10 (mounting surface, see FIG. 4) of the tongue rail 9 (see FIG. 5(d)). The concave curved surface portion 68 is formed from the middle to the tip of the elbow 23. A toothed metal 69 (see FIG. 3) is attached to the surface of the connecting portion 67 opposite the concave curved surface portion 68. The connecting portion 67 and the toothed metal 69 are positioned in the longitudinal direction of the elbow 23 by the engagement of teeth formed on their respective mating surfaces. The elbow 23 is connected to the tongue rail 9 by inserting a fastener 82 through holes 81, 81 formed in the toothed metal 69.

[0013] The adjustment fitting 25 is interposed between the tongue rail 9 and the elbow 23, and has two long holes 84, 84 extending in the vertical direction of the tongue rail 9, 9, through which fasteners 82, 82 are inserted. The adjustment fitting 25 has a convex curved surface portion 86 having a predetermined curvature radius that engages with the concave curved surface portion 68 of the elbow 23 on the surface opposite to the surface facing the elbow mounting surface 10 of the tongue rail 9 (see Figures 4 and 6 (c)). Even if the elbow mounting surface 10 of the tongue rail 9 is inclined (see Figure 7), the engagement between the convex curved surface portion 86 of the adjustment fitting 25 and the concave curved surface portion 68 of the elbow 23 allows the inclination and maintains the horizontal state of the elbow 23.

[0014] The connecting fitting 27 is provided on the middle portion 21B of the rod 21 and has a flange portion 87 to which the connecting can 3 is connected. The flange portion 87 is formed with a hole 89 through which a fastener 91 is inserted (see FIG. 2). The connecting fitting 27 has the rod shaft portion 21A inserted therethrough and is screwed into the threaded portion 37 of the rod shaft portion 21A. The position of the connecting fitting 27 can be adjusted along the axial direction of the rod shaft portion 21A by the positioning nuts 29 and lock nuts 31 disposed on both ends of the connecting fitting 27.

[0015] Next, the connecting rod 3 and the locking rod joint 107 that connect the front rod 1 and the point 11 will be described with reference to Figs. The connection can 3 includes a rod 101, a connection portion 103, and an adjustment portion 105. The rod 101 is a rod-shaped member, and includes a plate-shaped connection portion 103 at one end (the right side in FIG. 2) and a threaded shaft portion 108 with a threaded portion 109 formed on the outer periphery at the other end (the left side in FIG. 2). The adjustment portion 105 is provided on the threaded shaft portion 108. A pair of connection plates 114, 114 are connected to the connection portion 103 via an insulating plate 110 so as to sandwich the connection portion 103. The pair of connection plates 114, 114 are connected to the connection fitting 27 via a fastener 91. The adjustment portion 105 includes a bifurcated extension jaw 111, a positioning nut 113 integral with the extension jaw 111, and a lock nut 115 (see FIGS. 1 and 2). A pin hole 112 is formed at the tip of the bifurcated extension jaw 111 for inserting a pin 117 for connecting with a locking can joint adjustment fitting 119 of the locking can joint portion 107. A positioning nut 113 and a lock nut 115 are screwed into the threaded portion 109 of the rod 101. By adjusting the axial position of the extension jaw 111 relative to the rod 101 using the positioning nut 113 and the lock nut 115, the length of the connection can 3 can be adjusted.

[0016] The locking can joint part 107 is composed of a locking can joint adjustment fitting 119 and a locking can joint 121 (see FIG. 2). One end of the locking can joint adjustment fitting 119 is connected to the bifurcated extension jaw 111 of the adjustment part 105 by a pin 117 (see FIG. 2), and the other end is connected to the locking can joint 121 by a fastener 123 (bolt, nut, see FIG. 2). The locking can joint adjustment fitting 119 has a pin hole 125 for inserting the pin 117 at one end, and two long holes 127, 127 extending in the vertical direction for inserting the fastener 123 at the other end (see FIG. 2). In addition, a single protrusion 129 (see FIG. 2) is formed below the two long holes 127, 127 at the other end of the locking can joint adjustment fitting 119. The locking can joint 121 is formed with two holes 131, 131 for inserting the fastener 123 and a plurality of grooves 133, 133 (two grooves in the illustrated example) (see FIG. 2). The grooves 133, 133 are formed in the locking can joint 121 at a predetermined interval.

[0017] Here, when adjusting the height of the locking can joint adjustment fitting 119, the height of the locking can joint adjustment fitting 119 can be appropriately changed by fitting the single protrusion 129 of the locking can joint adjustment fitting 119 into either one of the grooves 133, 133 of the locking can joint 121, that is, by changing the engagement position.

[0018] According to the front rod 1 of this embodiment having the above-mentioned configuration, the following operational effects can be obtained. Even if the elbow 23 of the front rod 1 has an inclined elbow mounting surface 10 of the tongue rail 9, the inclination can be tolerated by the engagement between the convex curved surface portion 86 of the adjustment fitting 25 and the concave curved surface portion 68 of the elbow 23, and the elbow 23 can be connected to the tongue rail 9, 9 while maintaining the horizontal state of the elbow. This allows the elbow 23 to be compatible with multiple types of tongue rails 9 with different inclinations of the elbow mounting surface 10, so the front rod 1 can be used at the branch point locations of various turnouts 5. As a result, it is no longer necessary to prepare spare parts of the front rod 1 for various turnouts 5. In addition, it is no longer necessary to manufacture multiple types of front rods 1, which reduces costs.

[0019] In addition, the adjustment fitting 25 has long holes 84, 84 extending in the vertical direction of the tongue rail 9, so that the fastener 82 can be inserted into the long holes 84, 84 even if the elbow plate mounting surface 10 of the tongue rail 9 is inclined. This allows the elbow plate 23 to be properly connected to the tongue rail 9, 9.

[0020] Furthermore, by providing an insulating part 33 on one end side of the front rod 1, when the tongue rail 9 connected to the elbow 23 on the side where the insulating part 33 is provided comes into contact with the base rail 7, the insulating part 33 cuts off the flow of electricity, preventing a short circuit between the gauges. Also, since the connection can 3 is provided with a connection part 103 equipped with an insulating plate 102, even if the tongue rail 9 connected to the elbow 23 on the side where the insulating part 33 of the front rod 1 is not provided (the elbow 23 connected to the other end side of the rod 21) comes into contact with the base rail 7, the insulating plate 110 of the connection can 3 cuts off the flow of electricity, preventing a short circuit between the gauges.

[0021] In the above-mentioned front rod 1, the elbow 23 is formed with a concave curved surface portion 68, but instead of forming the concave curved surface portion 68 on the elbow 23, the adjustment fitting interposed between the elbow 23 and the tongue rail 9 may be composed of a first fitting having a convex curved surface portion and a second fitting having a concave curved surface portion. This allows the elbow 23 to be connected to the tongue rail 9 while maintaining the horizontal state of the elbow 23.

[0022] In addition, the convex curved surface portion 86 is formed on the adjustment fitting 25 and the concave curved surface portion 68 is formed on the elbow member 23, but it is also possible to form a concave curved surface portion on the adjustment fitting 25 and a convex curved surface portion on the elbow member 23.

[0023] Furthermore, the adjustment fitting 25 has long holes 84, 84 formed therein that extend in the vertical direction of the tongue rails 9, 9, but these may also be large diameter holes. [Explanation of symbols]

[0024] 1...Front rod, 5...Switch, 9...Tongue rail, 10...Elbow mounting surface (mounting surface), 21...Rod, 23...Elbow, 25...Adjustment bracket, 86...Convex curved surface portion (curved surface portion)

Claims

1. A front rod used in a turnout that changes the course of a railway vehicle, the front rod comprising a rod disposed between tongue rails and elbows connected to both ends of the rod and respectively joined to the tongue rails, An adjustment fitting is provided between the tongue rail and the elbow plate, The adjustment fitting has one of a concave curved surface and a convex curved surface having a predetermined radius of curvature formed on a surface opposite to a mounting surface of the tongue rail with which the adjustment fitting is engaged, The elbow has a surface facing the mounting surface of the tongue rail, the other of the concave curved surface and the convex curved surface having a predetermined radius of curvature formed thereon, A front rod characterized in that the adjustment fitting allows inclination of the mounting surface of the tongue rail with which the adjustment fitting engages by engagement between the concave curved surface and the convex curved surface.

2. A front rod used in a switch that changes the course of a railway vehicle, the front rod comprising a rod disposed between tongue rails and elbows connected to both ends of the rod and respectively joined to the tongue rails, An adjustment fitting is provided between the tongue rail and the elbow plate, the adjustment fitting includes a first fitting on which one of a concave curved surface and a convex curved surface having a predetermined radius of curvature is formed, and a second fitting on which the other of the concave curved surface and the convex curved surface having a predetermined radius of curvature is formed, A front rod characterized in that the adjustment fitting allows inclination of the mounting surface of the tongue rail with which the adjustment fitting engages by engagement between the concave curved surface and the convex curved surface.

3. A front rod as described in claim 1 or 2, characterized in that the adjustment fitting has a long hole extending in the vertical direction of the tongue rail, through which a fastener for fastening the tongue rail and the elbow plate is inserted.

Images