JPH0577302U - Relaxation prevention device for rail fastening device - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent loosening of bolts or nuts that tighten rail fastening clips by simple means. [Structure] A clip side engaging plate 3 is provided on one side of an upper surface plate 2 having a through hole 1 to form a loosening prevention tool body 4, and the upper surface plate 2 has a circular through hole having a diameter smaller than that of the through hole 1. A loosening prevention tool 7 is configured by integrally providing an engaging rubber member 6 having a fastening member 5, the upper surface plate 2 of the loosening prevention tool 7 is placed on a rail fastening clip 8, and the clip side surface engagement plate 3 is placed on the rail. The engagement rubber member 6 of the loosening prevention tool 7 is arranged near the side surface of the fastening clip 8 and the rail fastening clip 8 is provided.
Is pressed and fitted around the head 10 or nut of the bolt 9 for tightening.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for preventing a rail fastening device on a railway track from loosening.

[0002]

[Prior Art]

 In the rail fastening device, when a synthetic resin embedding plug having a female screw hole is embedded in a concrete sleeper and a bolt for fastening a rail fastening clip is screwed into the embedding plug, the bolt may loosen. Conventionally, as a loosening prevention device of a rail fastening device, as disclosed in Japanese Utility Model Laid-Open No. 3-65704, a polygonal hole is provided in an upper plate of a loosening prevention metal body made of a metal plate having a downward opening groove shape. Pin holes are provided on both side plates of the loosening prevention metal body, the loosening prevention metal body is fitted into the middle portion of the spring clip from above, and the polygonal hole of the upper plate is a nut or bolt on the upper portion of the spring clip. A spring pin, which is non-rotatably fitted to the head and has a head at the base end and a retaining projection in the middle, is inserted into the pin hole of the side plate from the outside, and the tip of the spring pin is inserted. It is known to have a structure in which the end portion is arranged in the lower middle portion of the spring clip.

[0003]

[Problems to be solved by the device]

 In the case of the conventional loosening prevention device of the rail fastening device, after the loosening prevention metal fitting body is fitted, the spring pins must be inserted into the pin holes on the side plates on both sides of the loosening prevention metal fitting body. Since the operation of mounting the protection device is complicated, and the thin spring pin is used, if the relaxation prevention device is used for a long period of time, the spring pin will be corroded, and the durability of the relaxation prevention device will be short. There is a drawback called kai.

[0004]

In order to advantageously solve the above-mentioned problems, in a loosening prevention device for a rail fastening device of the present invention, a clip side engaging plate is provided on one side of a top plate 2 having a through hole 1. 3 is provided to form a loosening prevention tool main body 4, and an engagement rubber member 6 having a circular through hole 5 having a smaller diameter than the through hole 1 is integrally provided on the upper surface plate 2 to form a relaxation prevention tool 7. Then, the top plate 2 of the loosening prevention tool 7 is placed on the rail fastening clip 8, and the clip side surface engaging plate 3 is arranged close to the side surface of the rail fastening clip 8, and The engaging rubber material 6 is press-fitted around the head 10 or the nut of the bolt 9 for fastening the rail fastening clip 8.

[0005]

【Example】

 4 and 5 show a relaxation preventive tool 7 used in the first embodiment of the present invention, in which a metal plate is pressed to form a top plate 2 having a circular through hole 1 and a top plate 2 thereabove. A loosening prevention tool body 4 composed of a clip side engaging plate 3 bent and connected to one side of the face plate 2 is formed, and a circular through hole 5 having a diameter smaller than that of the through hole 1 is formed on the lower surface of the upper plate 2. A plate-shaped engaging rubber member 6 having a is fixed by an adhesive or baking.

1 to 3 show a loosening prevention device for a rail fastening device according to a first embodiment of the present invention, in which a top plate 2 of a loosening prevention tool 7 is a spring clip of the rail fastening device. The clip side engaging plate 3 is directly or indirectly mounted on the intermediate portion of the rail fastening clip 8, and the clip side engaging plate 3 is disposed in the vicinity of the side surface of the clip 8, and further, the engaging rubber member 6 of the loosening prevention tool 7 is provided. Is press-fitted to the head 10 of the bolt 9 for tightening the clip 8, and the hole edge of the engaging rubber member 6 is pressed against the periphery of the head 10 of the bolt 9. The bolt 9 is screwed into a synthetic resin embedding plug 12 embedded in a concrete sleeper 11, and a rail 13 is fastened by the bolt 9 via a clip 8.

FIG. 8 and FIG. 9 show a relaxation prevention tool 6 used in the second embodiment of the present invention, in which a metal plate is pressed and a top plate 2 having a circular through hole 1 is formed. And a clip side engaging plate 3 bent and connected to one side of the upper plate 2 to form a loosening prevention tool body 4, and the upper plate 2 has a circular through hole having a diameter smaller than that of the through hole 1. An engaging rubber member 6 having a number 5 is integrally provided, and the entire loosening prevention tool body 4 is covered with a rubber member 14.

FIGS. 6 and 7 show a loosening prevention device for rail fastening according to a second embodiment of the present invention, in which the upper plate 2 of the loosening prevention tool 7 is a rail made of a spring clip in the rail fastening device. The clip side engaging plate 3 is placed directly or indirectly on the middle portion of the fastening clip 8, and the clip side engaging plate 3 is disposed in the vicinity of the side face of the clip 8. The head portion 10 of the bolt 9 for tightening the clip 8 is press-fitted, and the hole edge of the engaging rubber member 6 is pressed against the periphery of the head portion 10 of the bolt 9.

As means for tightening the rail fastening clip 8, an embedding plug embedded and fixed in the sleeper 11, a bolt (screw) having a lower male screw and an upper male screw screwed into the embedding plug, and a rail A nut screwed to the upper male screw at the upper portion of the fastening clip 8 may be used.

If an aging resistant rubber material is used as the engagement rubber material 6, the durability of the loosening prevention tool 7 can be improved. In addition, in the case of the second embodiment, since the whole body of the metal anti-loosening device 4 is covered with the rubber material, even if the anti-loosening device is used for a long time, the anti-loosening device main body 4 will not corrode. Absent.

[0011]

[Effect of the device]

 According to the present invention, the clip side engaging plate 3 is provided on one side of the upper surface plate 2 having the through hole 1 to form the loosening prevention tool body 4, and the upper surface plate 2 has a diameter smaller than that of the through hole 1. An engagement rubber member 6 having a circular through hole 5 is integrally provided to form a loosening prevention tool 7, and the top plate 2 of the loosening prevention tool 7 is placed on a rail fastening clip 8 and The engaging plate 3 is arranged close to the side surface of the rail fastening clip 8, and the engaging rubber material 6 of the loosening prevention tool 7 is provided around the head 10 or the nut of the bolt 9 for fastening the rail fastening clip 8. Since the fitting is made by pressing, even if the head 10 or the nut of the bolt 9 for tightening the clip 8 is at any rotation position, the engagement rubber member 6 fixed to the top plate 2 of the loosening prevention tool 7 is simply attached. Press fit from the top to the head 10 or nut of the bolt 9 By performing a simple operation of placing the clip side engaging plate 3 of the loosening prevention tool body 4 close to the side surface of the rail fastening clip 8, the loosening prevention tool 7 can be easily attached to the rail fastening device. In addition, the bolts 8 and nuts can be tightened or screwed back with a spanner while the loosening prevention tool 7 is attached to the rail fastening device. Maintenance is easy. Further, particularly in the case of the present invention, since the clip side engaging plate 3 is bent and connected to one side of the upper plate, the structure of the loosening prevention tool main body 4 is simple and the loosening prevention tool 7 is inexpensive. It can be made lightweight.

[Brief description of drawings]

FIG. 1 is a side view showing a loosening prevention device for a rail fastening device according to a first embodiment of the present invention.

FIG. 2 is a plan view illustrating a loosening prevention device for a rail fastening device according to a first exemplary embodiment of the present invention.

FIG. 3 is a partially longitudinal side view showing a loosening prevention device for a rail fastening device according to a first exemplary embodiment of the present invention.

FIG. 4 is a plan view showing a loosening prevention tool used in the first embodiment of the present invention.

5 is a cross-sectional view taken along the line AA of FIG.

FIG. 6 is a plan view showing a loosening prevention device for a rail fastening device according to a second embodiment of the present invention.

FIG. 7 is a partially longitudinal side view showing a loosening prevention device for a rail fastening device according to a second exemplary embodiment of the present invention.

FIG. 8 is a plan view showing a loosening prevention tool used in the second embodiment of the present invention.

9 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 1 Through Hole 2 Top Plate 3 Clip Side Engagement Plate 4 Relaxation Preventer Main Body 5 Circular Through Hole 6 Engaging Rubber Material 7 Relaxation Preventing Tool 8 Rail Fastening Clip 9 Bolt 10 Head 11 Sleeper 12 Embedding Plug 13 Rail 14 Rubber Material

Claims (1)

[Scope of utility model registration request] 1. A loosening prevention tool main body 4 is constructed by providing a clip side surface engaging plate 3 on one side of an upper surface plate 2 having a through hole 1.
An engagement rubber member 6 having a circular through hole 5 having a diameter smaller than that of the through hole 1 is integrally provided on the upper surface plate 2 to form a loosening prevention tool 7, and the upper surface plate 2 of the loosening prevention tool 7 is railed. It is placed on the fastening clip 8, the clip side engaging plate 3 is arranged close to the side surface of the rail fastening clip 8, and the engagement rubber material 6 of the loosening prevention tool 7 is fastened to the rail fastening clip 8. A loosening prevention device for a rail fastening device that is press-fitted around the head 10 or nut of a bolt 9.