JPH05272101A - Rail fastening device - Google Patents

Abstract

PURPOSE:To provide a rail fastening device capable of surely reproducing the required rail fastening force; capable of holding the constant rail fastening force over a long period, and requiring no lubricating maintenance work to prevent rusting in particular. CONSTITUTION:The pillar section 11b of a different-diameter pin 11 constituted of the pillar section 11b and cam sections 11e, 11f having the same shape and the same phase angle and fixed at the center sections on both side faces of it is rotatably supported on the fitting hole 12d of an anchor metal 12, and the lower section of the anchor metal 12 is fixed to a tie plate 37 supporting a rail 31. A spacer 13 is brought into contact with the lower faces of cam sections 11e, 11f of the different-diameter pin 11 so that it can be vertically movably coupled with the anchor metal 12 when the pillar section 11b is rotated. A rail fastening spring 14 is inserted into the anchor metal 12 between the spacer 13 and the tie plate 37, and a mechanism holding the cam sections 11e, 11f at the preset rotary angle is provided on at least either the cam sections 11e, 11f or the spacer 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail fastening device for railways and the like.

[0002]

2. Description of the Related Art In a conventional rail fastening device 30 for pressing a rail fastening spring against a rail with a screw (in the case of a direct connection type 8 general use) 30, a rail 31 is made of a steel plate 36, as shown in FIGS. The base 31a of the rail 31 is placed on the tie plate 37 via the track pad 35 and the rail adjustment packing 34, and the base 31a of the rail 31 is parallel to the protrusions 37a of the tie plate 37.
7a is pressed against the tie plate 37 via the steel plate 36, the track pad 35, and the rail adjusting packing 34 by the fastening bolt 48, the nut 49, the washer 50, and the rail fastening spring 47 which are inserted into the fastening bolt 48. To be done. The tie plate 37 is placed on the track slab 32 via the insulating plate 33. An embedded plug collar 44 is embedded in the track slab 32, and an anchor bolt 43 having a T-shaped lower end is locked in the embedded plug collar 44. The tie plate 37 is inserted through the anchor bolts 43, and the tie plate 37 has a cover plate 38,
It is fastened to the track slab 32 by a nut 43a via an insulating collar 39, a washer 40, a spring washer 41, and a washer 42. In addition, 45 is a lid for an embedded plug collar, and 46 is an anchor plate. Also, the rail 31 is 1: 1 with respect to the vertical surface.
It has a slope of 40.

[0003]

In the rail fastening member 30 described above, the fastening force with which the rail 31 is fastened to the tie plate 37 depends on the rotation angle and tightening torque of the nut 49 or the deformed state of the rail fastening spring 47. Since it was done by visual inspection, construction errors that occur in the fastening work were unavoidable, and it was difficult to reliably reproduce the required rail fastening force. Further, in the use state, the nut 49 loosens due to vibration and the rail fastening spring 47 falls off, and regular lubrication maintenance is required to prevent rusting of the fastening bolt 48 and the nut 49.

Unlike the conventional rail fastening device, the present invention can reliably reproduce the required rail fastening force without causing a construction error due to work, and further provides a constant rail fastening force over a long period of use. An object of the present invention is to provide a rail fastening member that can be held and does not require oiling maintenance work to prevent rusting of fastening bolts.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a pin having a different diameter, which is composed of a cylindrical portion and cam portions having the same shape and the same phase angle, which are fixed to the central portions of both side surfaces thereof. The upper part has a mounting hole that supports the cylindrical part of the pin so that it can rotate around the axis, and the lower part contacts the lower surface of the cam part of the pin with a different diameter that can be fixed to the tie plate that supports the rail. , A spacer that fits over the upper part of the anchor metal so that it can move in the vertical direction as the cylindrical part of the different diameter pin rotates and the cam part that rotates together with the cylindrical part around the axis of the cylindrical part are held at a predetermined rotation angle. The cam part rotation angle holding mechanism provided on at least one of the cam part and the spacer, and the anchor metal fitting are inserted between the spacer and the tie plate, and the pressing force of the cam part against the spacer is transmitted to the rail. Composed of rail fastening springs It has been.

[0006]

When the pin having a different diameter is rotated around the axis of the cylindrical portion with a wrench or the like, the cam portion in contact with the spacer is also rotated to gradually push the spacer downward. Along with this, the rail fastening spring inserted into the anchor metal fitting between the spacer and the tie plate is pushed downward against its elastic force, and the rail fastening spring presses the base of the rail against the tie plate. When the cam portion is rotated by a predetermined angle, the cam portion holds the rotation angle by the cam rotation angle holding mechanism, so that the different diameter pin does not rotate even if the wrench is removed. As a result, unlike the conventional rail fastening device, a construction error does not occur during work. Also, the required rail fastening force can be reliably reproduced. Further, a constant rail fastening force is maintained for a long period of time in a use state.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS. The rail fastening device 10 of the present embodiment is an improvement of the rail fastening device 30, and is composed of different diameter pins 11, anchor fittings 12, spacers 13, and rail fastening springs 14. In the description of the configuration, the same components as those of the conventional rail fastening device 30 are designated by the same reference numerals, and the description thereof will be omitted. The different-diameter pin 11 is made of iron, and as shown in FIG. 1, three cylindrical parts 11a, 11b, and 11c having the same diameter are concentrically arranged with a distance d, and both side surfaces of the cylindrical part 11b are substantially elliptical in cross section. The cam portions 11e and 11f are connected to one side surface of the columnar portions 11a and 11c. The cam portions 11e and 11f have the same phase angle (that is, the major axes of the cam portions 11e and 11f having substantially elliptical cross sections are located in the same plane).
Are arranged within the space d and are cylindrical portions 11a, 11b, 1
It is concentric with 1c. In addition, the cam portions 11e and 11f
The end on the long axis side of is cut flat in the direction perpendicular to the long axis. A head portion 11g having a square cross section is formed on the other side surface (left side in FIG. 1) of the column portion 11a.
The shape of the head portion 11g may be a regular hexagon, a rectangle, or a regular triangle.

The anchor metal fitting 12 is made of iron and has a wall thickness approximately the same as the width of the cylindrical portion 11b of the different diameter pin 11.
A wide upper part 12a as shown in FIG. 2, a middle part 12b narrower than the upper part 12a, and a tie plate 3 as shown in FIG.
7 parallel protrusions 37a, and a lower engaging portion 12c that can be engaged with and disengaged from a dovetail groove 37b provided in 37a. Top 1
Reference numeral 2a denotes a partial arc portion 12ab, a tapered portion 12ac connected to the middle portion 12b, a partial arc portion 12ab and a tapered portion 12.
It is composed of a parallel portion 12ad connecting with ac. Further, the cylindrical portion 11b of the different diameter pin 11 is provided on the upper portion 12a.
The mounting hole 12d that rotatably supports the partial arc portion 12a
It is provided concentrically with b.

The spacer 13 is made of iron and, as shown in FIG. 4, the parallel arc portions 1a, 13a and the partial arc portion 1 forming an end portion.
3b, 13b, and a rectangular hole 13c slidably fitted in the upper portion 12a of the anchor metal fitting 12 is provided in the center thereof. The width between the parallel portion 13a and the rectangular hole 13c is set to be smaller than the distance d between the different diameter pins 11, whereby the spacer 13 causes the cylindrical portions 11a, 11 of the different diameter pins 11 to be formed.
It is set so as to fit within the interval d between b and 11c. That is, the spacer 13 is the upper part 1 of the anchor metal fitting 13.
It is slidable with respect to 3a and can move vertically within the space d between the different diameter pins 11. Spacer 13
Are arranged so that they can contact the lower surfaces of the cam portions 11e and 11f of the different diameter pin 11.

The rail fastening spring 14 is manufactured by bending a rectangular spring plate by 180 degrees as shown in FIGS. 4 and 5, and is inserted into the middle portion 12b of the anchor metal fitting 12 through a slidable rectangular hole. And is arranged between the spacer 13 and the ridge 37a of the tie plate 37. The free end 14 a of the spring 14 abuts on the base 31 a of the rail 31, and the bent portion 14 a
b contacts the upper surface of the tie plate 37.

In the above structure, when a wrench is inserted into the head portion 11g of the different diameter pin 11 in the state shown in FIG. 1 and the different diameter pin 11 is rotated, the cam portion 11e in the horizontal state,
11f rises in a vertical state and pushes down the spacer 13 downward as shown in FIG. Along with this, the rail fastening spring 14 supported by the tie plate 37 and the base 31a of the rail 31 is pushed downward against the elastic force thereof, and the free end 14a of the spring 14 moves the base 31a of the rail 31 to the steel plate 36. , The track pad 35, and the rail adjustment packing 34 to press and fix the tie plate 37. At this time, since the end portions of the cam portions 11e and 11f on the long axis side are cut in a direction perpendicular to the long axis and are flat, even if the wrench is removed from the head portion 11g, the long axis side portions of the cam portions 11e and 11f are located. Due to the pressing force of the flat end 11h and the spacer 13, the different diameter pin 11 does not rotate. Therefore, in the use state, the cam portions 11e and 11f do not rotate to lose the function of pressing the spacer 13 due to vibration, and the force for fixing the rail 31 is stable for a long time. However, for safety, the head portion 11g of the different diameter pin 11 may be provided with a rotation stop after the rail 31 is tightened by the different diameter pin 11. Also cam part 1
Instead of cutting the long-axis side end portions of 1e and 11f, a locking groove for locking the long-axis side end portions of the cam portions 11e and 11f may be provided on the upper surface of the spacer 13. In this case, the detent for the different-diameter pin 11 is not necessary.

A conventional rail fastening device 3 is attached to the different diameter pin 11.
Since there is no threaded portion like the 0 fastening bolt 48, there is no need to lubricate to prevent rusting. The fastening force for fastening the rail 31 to the tie plate 37 is obtained by rotating the different diameter pin 11 to press the spacer 13 at the cut end portions of the cam portions 11e and 11f, or the cam portions 11e and 1f.
Since the end of 1f on the long axis side is locked in the locking groove on the spacer 13 and is uniquely determined by pressing the spacer 13, there is no unevenness in fastening force due to a construction error.
It is possible to reliably reproduce the required rail fastening force.

[0013]

Since the present invention has the above-mentioned structure, it has the following excellent effects. (A) The rail fastening work is easy, construction errors do not occur, and the required rail fastening force can be reliably reproduced. (B) In use, the rail fastening force is kept at a constant value for a long period of time without being affected by vibration. (C) Since the fastening bolts are not used unlike the conventional rail fastening device, no lubrication work is required for maintenance.

[Brief description of drawings]

FIG. 1 is a front view of a different diameter pin.

FIG. 2 is a front view of an anchor fitting.

FIG. 3 is a side view of an anchor fitting.

FIG. 4 is a plan view of the rail fastening device.

FIG. 5 is a front view of the rail fastening device.

FIG. 6 is a side view of a connecting portion between an anchor metal fitting and a tie plate.

FIG. 7 is a plan view of a conventional rail fastening device.

FIG. 8 is a front view of a conventional rail fastening device.

[Explanation of symbols]

 10 Rail Fastening Device 11 Different Diameter Pin 11h Flat End (Cam Rotation Angle Holding Mechanism) 12 Anchor Metal Fitting 13 Spacer 14 Rail Fastening Spring 31 Rail 32 Track Slab 37 Typograph

Claims (1)

[Claims] 1. A different diameter pin comprising a cylindrical portion and cam portions of the same shape and the same phase angle fixed to the central portions of both side surfaces thereof, and a cylindrical portion of the different diameter pin is rotatably supported around an axis. Anchor fittings that have a mounting hole in the upper part and that can be fixed to the tie plate that supports the rail, and the lower surface of the cam part of the different diameter pin come into contact and move vertically as the cylindrical part of the different diameter pin rotates. Provided on at least one of the cam part and the spacer for holding the spacer that fits over the upper part of the anchor metal fitting and the cam part that rotates together with the cylinder part around the axis of the cylinder part at a predetermined rotation angle. A rail fastening device comprising: a cam rotation angle holding mechanism; and a rail fastening spring that is inserted into an anchor metal fitting between the spacer and the tie plate and that transmits the pressing force of the cam portion against the spacer to the rail.