JPH0849201A - Rail fastening device - Google Patents

Abstract

(57) [Abstract] [Purpose] The structure is simplified, the amount of track adjustment by the rail retainer is expanded, the rail is prevented from coming off due to vibration due to train load, etc. provide. [Structure] In a grooved groove 3 inclined along the longitudinal direction of a rail 2 provided on a concrete sleeper 1, an inclined guide groove 4c in the opposite direction to the grooved groove and a parallel long groove-shaped bolt hole 4d on the upper surface.
The rail retainer 4 having the above is slidably fitted, and the leaf spring 5 having the bolt hole 5a in the inclined guide groove of the rail retainer.
Then, the rail fastening bolt 6 was inserted and tightened over the bolt holes of the leaf spring and the rail retainer.

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 railroad tracks.

[0002]

2. Description of the Related Art In a conventional rail fastening device, FIG.
As shown in the figure, the rail retainer is basically of a structural type using a leaf spring a, and is made of a synthetic resin which is mounted on a rail sleeper b for rail gauge adjustment and insulation, and supports a curved portion of the leaf spring a. Is used. In the figure, d is a rail, e is a rail pad, f is a rail fastening bolt whose lower end portion is screwed into an embedding plug embedded in the sleeper b, and g is a washer.

FIGS. 10 and 11 show another example of a conventional rail fastening device using a rail holder made of synthetic resin.
Insulation sleeve h arranged over rail d and sleeper b
And the leaf spring j and the washer k superimposed on the sleeve h,
The rail fastening bolt m is inserted and tightened, but does not have an adjusting function.

[0004]

In the above-mentioned conventional apparatus, there is a problem that the rail retainer made of a leaf spring and the spring receiving stand are separately provided, and the configuration becomes complicated. In addition, the inclination of the conventional spring cradle in the rail longitudinal direction is 1/10, and in order to increase the gauge adjustment function, the spring cradle must be enlarged, and if the inclination angle of the spring cradle is increased, However, there is a concern that the rail presser may fall out due to the vibration of the train load, and it is necessary to take measures to prevent mechanical escape.

The present invention has been proposed in view of the above-mentioned problems of the prior art, and has as its object the purpose of simplifying the structure, increasing the distance between rail gauges by means of a rail presser, and reducing train load and the like. An object of the present invention is to provide a rail fastening device that is prevented from coming off due to vibrations caused by the vibration and is highly reliable in terms of insulation.

[0006]

In order to achieve the above-mentioned object, a rail fastening device according to the present invention has a grooved groove provided on a concrete sleeper with an inclination along the longitudinal direction of the rail, and a tip end thereof. Is provided with a rail pressing portion, a rear end portion is provided with a sliding portion along the inclined surface of the sleeper recessed portion, and a long groove bolt having an inclination angle parallel to the recessed groove of the sleeper is provided on the upper surface. A rail retainer made of synthetic resin, which is provided with an inclined guide groove opposite to the inclined groove groove of the hole and sleeper, is slidably fitted, and closely adheres to the end of the inclined guide groove of the rail retainer, Also, a leaf spring having a bolt hole of the same diameter as the rail fastening bolt is fitted, and the rail fastening bolt having the lower end fixed to the sleeper is inserted through the leaf spring and the rail retainer over the respective bolt holes. It is constructed by tightening and tightening.

According to a second aspect of the present invention, a steel insert having a projecting portion on an outer peripheral surface and a threaded portion formed on an inner peripheral surface is welded at a predetermined position of a connecting member connecting two blocks in a two-block sleeper. The rail fastening bolt is screwed to each insert. According to a third aspect of the present invention, the rail retainer and the leaf spring are fastened by an anchor bolt embedded in the sleeper or welded to a connecting material.

[0008]

According to the present invention, as described above, a rail presser provided with a rail presser portion at a tip end in a concave groove provided in a concrete sleeper so as to be inclined in the longitudinal direction of the rail. After being fitted, the rail presser is slid with the sliding portion provided at the rear end thereof and the inclined surface of the concave groove of the sleeper as guides and fixed at a predetermined position, and then provided on the upper surface of the rail presser. A rail having a lower end fixed to the sleeper over a bolt hole provided in the leaf spring and the rail retainer, respectively, by sliding the leaf spring along an inclined groove portion opposite to the provided sleeper concave groove. Adjustment of the gauge is performed by inserting and tightening the fastening bolt. At this time, by increasing the inclination angle of the upper ridge groove of the sleeper and the leaf spring, the adjustment amount between the gauges is enlarged.

When the inclination angle of the groove is increased as described above, the spring pedestal may slip out due to the vibration of the train load. According to the present invention, however, the rail retainer is provided along the upper groove of the sleeper. When moving the, the leaf spring fits in the opposite inclined groove portion on the upper surface of the rail retainer, so
You have to move as a body. Since the leaf spring is fixed by the rail fastening bolt, the rail retainer is prevented from slipping out.

Further, since the leaf springs support both ends of the rail retainer, the presence of the bolt holes in the rail retainer causes a cross-section loss, and a bending moment is generated in the central portion, which is a weak point in strength. Prevent. The invention according to claim 2 has a protrusion for fixing to concrete on an outer peripheral surface at a predetermined position of a connecting member connecting both blocks in a two-block sleeper, and a screw portion for screwing a bolt is formed on an inner peripheral surface. The steel inserts were welded, and the rail fastening bolts were screwed onto each of the inserts.
The rails of the block sleepers can be easily and reliably fastened.

According to a third aspect of the present invention, the rail retainer and the leaf spring are fastened by anchor bolts buried in the sleeper or welded to the connecting member, so that the rail can be securely fastened.

[0012]

The present invention will be described below with reference to the illustrated embodiments. 1 and 2 show a first embodiment of the present invention, in which 1 is a concrete sleeper, and a recessed line is provided on the bearing surface of the rail 2 on the upper surface of the sleeper with an inclination along the rail longitudinal direction. A rail retainer 4 made of synthetic resin such as polyamide resin is slidably disposed in the groove 3.

The rail retainer 4 is provided with a rail retainer 4a at the front edge and a sliding portion formed at the rear edge in a curved surface so as to slide along the groove 3 in the sleeper 1. Four
b is provided. Further, an inclined guide groove 4c opposite to the concave groove 3 of the sleeper 1 is provided on the upper surface of the presser foot 4, and the rail pressing tool 4 slides in the longitudinal direction along the concave groove groove 3 of the sleeper. It is designed to move.

Reference numeral 5 denotes an inclined guide groove 4c of the rail holding member 4.
A washer-like leaf spring having a width that fits in the center of the rail holding member 4 slidably fitted in the inclined guide groove 4c of the rail retainer 4. Has been done. Reference numeral 4d in the drawing denotes a slotted bolt hole formed in the inclined guide groove 4c of the leaf spring 4.

In the figure, 6 is a rail fastening bolt, which is screwed to an embedding plug 7 embedded in the concrete sleeper 1 and penetrates through the bolt holes 4d and 5a of the rail retainer 4 and the leaf spring 5 to form the rail. The presser foot 4 and the leaf spring 5 are clamped, and the rail 2 is fastened via the rail presser portion 4a of the rail presser tool 4. In the figure, 8 is a spring washer and 9 is a track pad.

Since the illustrated embodiment is constructed as described above, the rail presser 4 is slid along the groove 3 of the concrete sleeper 1 to an appropriate position during the work of adjusting the gauge,
The rail 2 is pressed by the rail pressing portion 4a at the tip, and the leaf spring 5 is fitted and slid into the inclined guide groove 4c of the rail pressing portion 4 to slide the plate spring 5 and the bolt holes 4d, 5
The rail 2 is fastened to the concrete sleeper 1 by making the a coincide with each other, inserting the rail fastening bolt 6 and tightening it.

At this time, the inclined guide groove 4c of the rail retainer 4
When the inclination angle is increased, the gauge adjustment amount is increased, and moreover, since the leaf spring 5 is fitted in the inclination guide groove 4c, the rail retainer 4 is prevented from slipping out. In addition, since the leaf springs 5 support both end portions of the rail holding member 4, a bending moment is prevented from being generated at a central portion of the rail holding member 4 where a weak bolt hole is formed. .

FIGS. 3 and 4 show a second embodiment of the present invention. In a two-block sleeper, an upper part of a connecting member 10 made of, for example, an H-shaped steel for connecting both blocks constituting each concrete sleeper 1 is connected. The flange has a projection on the outer peripheral surface,
Welding the steel plug 7 with the thread formed on the inner peripheral surface,
The rail 2 is fastened by the rail fastening bolts 6 screwed into the embedding plug 7 to improve the strength of the rail fastening device and simplify the structure.

In the figure, the same parts as those in the above embodiment are denoted by the same reference numerals. FIG. 5 shows a third embodiment of the invention,
Rail fastening bolts 6 are used for connecting members 10 in two-block sleepers.
The rail fastening device is simplified by directly welding itself. In the figure, 11 is a tightening nut for the bolt 6,
In addition, the same reference numerals are given to the same parts as those in the above embodiment.

[0020]

As described above, according to the rail fastening device of the present invention, the rail retainer is slidably fitted in the reversely inclined concave groove provided in the longitudinal direction of the concrete sleepers. The presser foot is slid using the rear end sliding portion of the presser foot and the slanted groove of the sleeper as a guide, and a leaf spring is fitted in the reverse slanted guide groove provided in the rail presser. Since the rail fastening bolt is passed through and tightened in the bolt hole provided in the rail retainer, the rail retainer and the spring receiving base are integrated and the structure is simplified. By moving the leaf spring and the leaf spring, it is possible to accurately adjust the gauge.

Further, according to the present invention, by increasing the inclination angle of the inclined groove of the sleeper and the rail retainer,
The gauge adjustment amount can be expanded. As described above, when the inclination angle of the inclined groove is increased, the rail retainer may slip out due to the vibration of the train load. However, according to the present invention, the rail retainer has the reverse inclination guide groove as described above. By fitting the leaf spring, the rail retainer can be prevented from slipping out.

Further, since the leaf spring supports both ends of the inclined guide groove of the rail retainer, a bending moment is generated at a central portion where strength is weak due to a cross-sectional defect caused by drilling a bolt hole in the rail retainer. It is to prevent. According to the invention of claim 2, a steel insert having a retaining projection on an outer peripheral surface as an anchor of a rail fastening bolt and having a threaded portion for screwing a bolt on an inner peripheral surface is used as a connecting member in a two-block sleeper. By welding, the configuration of the anchor of the rail fastening bolt can be simplified, the strength of the anchor can be improved, and the structure can be simplified.

According to the third aspect of the present invention, the configuration can be significantly simplified by fastening the rail presser and the leaf spring by the anchor bolt welded to the crossties or to the connecting member.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an embodiment of a rail fastening device according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a vertical cross-sectional view showing a second embodiment of the present invention.

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is a longitudinal sectional view showing a third embodiment of the present invention.

FIG. 6 is a vertical sectional side view of a rail retainer.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a plan view of a leaf spring.

FIG. 9 is a vertical sectional view showing an example of a conventional rail fastening device.

FIG. 10 is a longitudinal sectional view showing another example of the conventional rail fastening device.

11 is a plan view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete sleeper 2 Rail 3 Concave groove 4 Rail retainer 4a Rail retainer 4b Sliding part 4c Incline guide groove 4d Bolt hole 5 Leaf spring 5a Bolt hole 5b Side edge 6 Rail fastening bolt 7 Embedding plug 8 Washer 9 Track Pad 10 Connecting material 11 Tightening nut

Claims (3)

[Claims] 1. A recessed groove formed on a concrete sleeper with an inclination along the longitudinal direction of the rail, a rail pressing portion is provided at the front end, and an inclined surface of the recess of the sleeper is provided at the rear end portion. A synthetic resin provided with a sliding portion along which a long groove-shaped bolt hole having an inclination angle parallel to the groove groove of the sleeper and an inclined guide groove opposite to the inclination of the groove groove of the sleeper are provided on the upper surface. A rail holder made of metal is slidably fitted, is closely attached to the end of the inclined guide groove of the rail holder, and is fitted with a leaf spring having a bolt hole with the same diameter as the rail fastening bolt. A rail fastening device in which a spring and the rail retainer are passed through respective bolt holes, and a rail fastening bolt having a lower end fixed to the sleeper is inserted and tightened. 2. A steel insert having a projecting portion on the outer peripheral surface and a thread portion on the inner peripheral surface is welded to a predetermined position of a connecting material connecting both blocks in a two-block sleeper, and the inserts are attached to the respective inserts. The rail fastening device according to claim 1, wherein the rail fastening bolt is screwed. 3. The rail fastening device according to claim 1, wherein the rail retainer and the leaf spring are fastened by anchor bolts embedded in the sleeper or welded to a connecting material.