JP2017082401A - Railroad tie fastener - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a railroad tie fastener that fastens a railroad tie firmly with a bridge girder and mitigates a maintenance work burden.SOLUTION: A railroad tie fastener is for fixing a plurality of railroad ties (110) on a bridge girder (120). The railroad tie fastener may be laid out along an edge part (S1) on a top surface of the bridge girder (120), and includes: a bracing (30) having a length sufficient to span over the plurality of railroad ties (110) installed on the bridge girder; and plural anchoring means (10, 20) fixed respectively on the plurality of railroad ties (110) and may be fastened to the bracing (30) in such a way to sandwich the edge part (S1) of the bridge girder (120) in a vertical direction between the railroad tie and the bracing (30).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sleeper fastener for fastening a sleeper to a bridge girder.

In railway bridges, sleepers are fastened to the bridge girders to lay the rails. As a conventional fastener for fastening a sleeper to a bridge girder, there is a J-shaped hook bolt having a hook portion at a lower portion. The sleeper is provided with a through-hole that extends vertically, and when fastening, a hook bolt is passed from below through the sleeper's through-hole. Is done. By tightening the nut, the bridge girder is sandwiched between the hook portion and the sleeper, and the bridge girder and the sleeper are fastened.
Patent Document 1 shows a joint material (reference numeral 3 in FIG. 1 of Patent Document 1) fixed to a plurality of sleepers so as to pass between the plurality of sleepers. The joint material is fixed to the upper surface of the sleepers by hook bolts, and maintains the interval between the sleepers.

JP 2013-177794 A

Unlike roadbeds where sleepers are supported by crushed stone or gravel, the bridges support sleepers by bridge girders. Therefore, it is necessary to firmly fasten the sleepers and bridge girders to suppress the movement of the sleepers. The joint material fixed so as to pass between the plurality of sleepers maintains the spacing between the sleepers and contributes to restraining the movement of the individual sleepers.
A large vibration is transmitted to the sleepers when passing through the train. For this reason, in the bridge sleepers, the vibration may cause loosening of the fastening portions of the sleepers. When the fastening portion is loosened in some of the plurality of sleepers connected by the joint material, the horizontal force or vibration applied to the sleeper from the train is transmitted to another sleeper by the joint material. For this reason, the problem that it becomes easy to induce loosening of a fastening part to other sleepers will arise when loosening has arisen in the fastening part of some sleepers by installing a joint material.
If loosening of the fastening portion is likely to occur, the periodic inspection cycle must be shortened to increase the frequency of maintenance such as re-fastening or tightening the loosened fastening portion.

  An object of the present invention is to provide a sleeper fastener capable of obtaining a strong fastening between a sleeper and a bridge girder and reducing maintenance.

In order to achieve the above object, the present invention
A sleeper fastener for fixing a plurality of sleepers to a bridge girder,
A joint member that can be arranged along an edge portion of the upper surface of the bridge girder, and has a length that spans the plurality of sleepers installed on the bridge girder,
A plurality of fixing means that can be fixed to each of the plurality of sleepers and that can be fastened to the joint material so as to sandwich the edge portion of the bridge girder between the joint material from above and below;
It is characterized by having.

  According to this configuration, since the joint member and the fixing unit are fastened with the edge portion of the bridge beam interposed therebetween, a large frictional force is generated between the bridge beam and the joint member. Therefore, the bridge girder and the sleepers can be firmly fastened by applying this frictional force. Furthermore, even if some of the sleepers are loosened, a large frictional force is generated between the bridge girder and the joint. It is difficult to transmit force or vibration. Therefore, the effect | action that the loosening of the fastening part of a sleeper induces the loosening of the fastening part of another sleeper with a joint material can be reduced. Therefore, the bridge girder and the sleeper can be firmly fastened, and the fastening part of the sleeper is hardly loosened, so that the maintenance work can be reduced.

Here, each of the plurality of fixing means includes two fixing plates respectively disposed on one side and the opposite side of the sleeper in the longitudinal direction of the bridge girder, and the two fixings penetrating the sleeper. It is good to comprise so that it may have a volt | bolt which ties a plate, and the said 2 fixing plates may pinch | interpose the said sleeper by clamping | tightening the said volt | bolt.
According to this configuration, the fixing means is firmly fixed to the sleepers, and the overall fastening of the sleepers, the fixing means, the joint material, and the bridge girder can be further strengthened.

In addition, one or each of the two fixing plates has a hook-shaped groove that can be hooked on a predetermined portion on the opposite side of the edge portion of the bridge girder, and the hook-shaped groove is hooked on the predetermined portion. It is good to make it the structure which can be fastened with the said joint material.
According to this structure, it can prevent that a fixing plate and a joining material slip | deviate from the edge part of a bridge girder because a hook-shaped groove | channel is hooked in the predetermined part (for example, edge part of a reverse side) of a bridge girder. Therefore, it is possible to stably maintain a strong fastening that is less likely to be loose.

Further, the joint material includes at least a plate-like portion that contacts the lower surface of the edge portion, a block portion that fills a space corresponding to the thickness of the edge portion on the side of the edge portion, and one of the two fixing plates Or the bolt part for fastening with each is integrated and constituted,
One or each of the two fixing plates may include at least a plate-like portion that contacts the upper surface of the edge portion and a bolt insertion portion that passes through the bolt portion.
According to this configuration, the joint material and the fixing plate can be easily fastened, and the edge portion of the bridge beam can be stably sandwiched between the plate-like portion of the joint material and the plate-like portion of the fixing plate. it can.
In addition, one or each of the two fixing plates may further include a hook for hooking the net.
According to this structure, the net | network which prevents a fall of an object can be provided between the left and right bridge girders and the plurality of sleepers by hanging the net on the hook portion of the fixing plate.

  According to the present invention, it is possible to obtain a strong fastening between the sleepers and the bridge girder, and further reduce the maintenance.

It is a perspective view which shows the fastening structure of the bridge girder and sleeper using the sleeper fastener of embodiment of this invention. It is a side view which shows the fastening structure of FIG. It is the enlarged plan view which showed a part of fastening structure of FIG. It is a perspective view which shows the 1st fixing plate contained in the sleeper fastener of embodiment. It is a perspective view which shows the 2nd fixing plate contained in the sleeper fastener of embodiment. It is a perspective view which shows the joint material contained in the sleeper fastener of embodiment. It is a front view which shows the joint material of FIG. FIG. 4 is a sectional view taken along the line AA in FIG. 3.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing a fastening structure between a bridge girder and a sleeper using the sleeper fastener according to the embodiment of the present invention. FIG. 2 is a side view showing the fastening structure of FIG. FIG. 3 is an enlarged plan view showing a part of the fastening structure of FIG.
As shown in FIGS. 1 to 3, the sleeper fastener according to the present embodiment is configured to fasten the sleepers 110 and the bridge girder 120 in a railway bridge. As shown in FIGS. 1 to 3, the sleeper fastener of the present embodiment includes a first fixing plate 10, a second fixing plate 20, and a joint material 30. One first fixing plate 10 and one second fixing plate 20 constitute a set of fixing means.

FIG. 4 is a perspective view illustrating a first fixing plate included in the sleeper fastener according to the embodiment. FIG. 5 is a perspective view illustrating a second fixing plate included in the sleeper fastener according to the embodiment.
The first fixing plate 10 and the second fixing plate 20 are members fixed to the sleepers 110 and fastened to the joint material 30.
The first fixing plate 10 is made of, for example, a plate-shaped steel material that is partially bent. The first fixing plate 10 includes a standing portion 11 that is pressed against the side surface of the sleeper 110, a bolt insertion portion 12 that is provided on the standing portion 11, and a plate-like portion that is partly pressed against the edge portion S1 of the bridge girder 120. 13, a bolt insertion portion 14 provided in the plate-like portion 13, a trunk portion 15 extending from one edge portion S 1 of the bridge girder 120 to the opposite edge portion S 2, and an opposite edge portion of the bridge girder 120 It has a hook-like groove 16 that can be hooked on S2 and a hook portion 17 that is provided below the hook-like groove 16 and can hook a net.

Similarly to the first fixing plate 10, the second fixing plate 20 is made of, for example, a plate-shaped steel material having a partially bent shape, and a standing portion 21 that is pressed against the side surface of the sleeper 110, and a standing portion. Bolt insertion portion 22 provided in 21, plate-like portion 23 partially pressed against edge portion S 1, bolt insertion portion 24 provided in plate-like portion 23, from edge portion S 1 to the opposite edge portion S 2 It has an extended body part 25, a hook-like groove 26 that can be hooked on the edge part S2, and a hook part 27 that is provided below the hook-like groove 26 and can hook a net.
The first fixing plate 10 and the second fixing plate 20 have a plane-symmetric form in which the bending directions of the plate-like portions 13 and 23 are reversed.

FIG. 6 is a perspective view illustrating a joint material included in the sleeper fastener according to the embodiment. FIG. 7 is a front view showing the joint material of FIG.
The joint member 30 is a member that is disposed along the edge portion S <b> 1 on the upper surface of the bridge girder 120 and that fixes the edge portion S <b> 1 of the bridge girder 120 between the first fixing plate 10 and the second fixing plate 20. The joint member 30 has a length extending over a plurality of sleepers 110 installed on the bridge girder 120.
The joint member 30 includes a plate-like portion 31 that is partly pressed against the lower surface of the edge portion S2 of the bridge girder 120, and a plurality of blocks that fill the space corresponding to the thickness of the edge portion S1 on the side of the edge portion S1 of the bridge girder 120. Part 32 and a plurality of bolt parts 33 fastened to first fixing plate 10 and second fixing plate 20. The plate-like portion 31, the plurality of block portions 32, and the plurality of bolt portions 33 are joined and integrated by, for example, welding.

The plurality of block portions 32 are provided at positions corresponding to the plurality of first fixing plates 10 and the plurality of second fixing plates 20 respectively fixed to the plurality of sleepers 110.
As shown in FIG. 7, the plate-like portion 31 has a length that protrudes from the block portion 32 toward the bridge girder 120 when the joint member 30 is viewed in the longitudinal direction, and the protruding portion 31 a is the bridge girder 120. It is press-contacted to the lower surface of the edge part S2.
The plurality of bolt portions 33 are provided so as to protrude from the plurality of block portions 32 so that the respective central axes are perpendicular to the plate-like portion 31. As shown in FIG. 7, the head portion 33 a of the bolt portion 33 may protrude below the plate-like portion 31.

(Fastening structure)
8 is a cross-sectional view taken along the line AA in FIG.
As shown in FIGS. 3 and 8, the sleepers 110 are provided with through holes h in the horizontal direction. The through hole h is provided in a portion arranged in the vicinity of the upper portion of the edge portion S <b> 1 of the bridge girder 120 so as to penetrate in the longitudinal direction of the bridge girder 120.
The first fixing plate 10 and the second fixing plate 20 are arranged such that the plate-like portions 13 and 23 are arranged above the one edge portion S1 in a state where the hook-like grooves 16 and 26 are hooked on the edge portion S2 of the bridge girder 120. Is done. At this time, the bolt insertion holes 12 and 22 of the first fixing plate 10 and the second fixing plate 20 overlap with the through hole h of the sleeper 110.

In this state, the operator fastens the first fixing plate 10 and the second fixing plate 20 to the sleepers 110 by tightening the bolts b through the bolt insertion portions 12 and 22 and the through holes h with nuts. By tightening the bolt b and the nut, the standing portion 11 of the first fixing plate 10 and the standing portion 21 of the second fixing plate 20 sandwich the sleeper 110. Thereby, firm fixation is realized.
The joint material 30 is installed such that each of the plurality of block portions 32 is positioned below the plate-like portion 13 of the first fixing plate 10 or below the plate-like portion 23 of the second fixing plate 20. At this time, the plurality of block portions 32 are aligned with the edge portion S1 of the bridge girder 120, and the protruding portion 31a of the plate-like portion 31 (see FIG. 7) contacts the lower surface of the edge portion S1 in parallel. Further, the bolt portion 33 (see FIG. 6) of the joint member 30 is in a state of passing through the bolt insertion portions 14 and 24 of the first fixing plate 10 and the second fixing plate 20.

  In this state, the nuts are fastened to the bolt portions 33, so that the plate-like portion 13 of the first fixing plate 10 is pressed against the edge portion S 1 and the block portion 32 of the bridge girder 120, and the first fixing plate 10, the joint material 30, Is concluded. Similarly, the plate-like portion 23 of the second fixing plate 20 is pressed against the edge portion S1 and the block portion 32 of the bridge girder 120, and the second fixing plate 20 and the joint member 30 are fastened.

  According to such a sleeper fastener, the plurality of sleepers 110 are fastened to the bridge girder 120 by the first fixing plate 10, the second fixing plate 20, and the joint material 30. In the fastened state, a part of the joint member 30 is pressed against the lower surface of the edge portion S1 in a long range along the edge portion S1 of the bridge girder 120, and a large frictional force acts on this surface. In particular, the frictional force in the longitudinal direction of the bridge girder 120 is increased. Further, the block portion 32 of the joint member 30 is located on the side of the edge portion S <b> 1 of the bridge girder 120, while the hook-shaped grooves 16 and 26 of the first fixing plate 10 and the second fixing plate 20 are the other side of the bridge girder 120. Since it is hooked by the edge part S2, a big resistance force arises also with respect to the force of the longitudinal direction of the sleeper 110. FIG. Therefore, the firm fastening with the sleeper 110 and the bridge girder 120 is obtained.

Here, the nets may be stretched between the two bridge girders 120 and 120 by hooking the nets on the hook portions 17 of the plurality of first fixing plates 10 and the hook portions 27 of the plurality of second fixing plates 20. Good. This net can prevent objects from falling under the bridge girders 120 and 120.
After the sleepers 110 and the bridge girder 120 are fastened, it is assumed that a large lateral force or vibration when passing through the train is transmitted to the sleepers 110 and some fastening portions are loosened. Even in this case, since there is a fastening portion that is not loosened, a large frictional force acting between the joint member 30 and the bridge girder 120 causes a lateral force or vibration from the loosened sleeper 110 to the joint member. It is difficult to be transmitted to a fastening portion of another sleeper 110 through 30. Therefore, the joint material 30 can reduce the effect that the loosening of the fastening part of the sleeper 110 further induces the loosening of the fastening part of the other sleeper 110. As a result, the fastening part of the sleeper 110 is less likely to loosen, and the maintenance work can be reduced.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and the details shown in the embodiments can be appropriately changed without departing from the spirit of the invention. .

DESCRIPTION OF SYMBOLS 10 1st fixing plate 20 2nd fixing plate 11, 21 Standing part 13, 22 Plate-like part 12, 14, 22, 24 Bolt insertion part 16, 26 Gutter-like groove 17, 27 Hook part 30 Joint material 31 Plate-like part 32 Block part 33 Bolt part 110 Sleeper 120 Bridge girder h Through hole b Bolt

Claims (5)

A sleeper fastener for fixing a plurality of sleepers to a bridge girder,
A joint member that can be arranged along an edge portion of the upper surface of the bridge girder, and has a length that spans the plurality of sleepers installed on the bridge girder,
A plurality of fixing means that can be fixed to each of the plurality of sleepers and that can be fastened to the joint material so as to sandwich the edge portion of the bridge girder between the joint material from above and below;
A sleeper fastener characterized by comprising:   Each of the plurality of fixing means connects two fixing plates respectively disposed on one surface opposite to the one surface of the sleeper in the longitudinal direction of the bridge beam, and connects the two fixing plates through the sleeper. The sleeper fastener according to claim 1, further comprising: a bolt, wherein the two fixing plates are configured to sandwich the sleeper by tightening the bolt.   One or each of the two fixing plates has a hook-shaped groove that can be hooked to a predetermined portion on the opposite side of the edge portion of the bridge girder, and the joint is in a state where the hook-shaped groove is hooked to the predetermined portion. The sleeper fastener according to claim 2, wherein the sleeper fastener is configured to be fastened to a material. The joint material includes at least one of a plate-like portion that contacts the lower surface of the edge portion, a block portion that fills a space corresponding to the thickness of the edge portion on the side of the edge portion, and one or each of the two fixing plates. The bolt part for fastening with is configured integrally.
The one or each of the two fixing plates has at least a plate-like portion that contacts an upper surface of the edge portion, and a bolt insertion portion that inserts the bolt portion. Sleeper fasteners.   The sleeper fastener according to any one of claims 2 to 4, wherein one or each of the two fixing plates further includes a hook portion for holding the net.

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