JP4369822B2 - Sleeper coupler - Google Patents

Description

  The present invention relates to a sleeper coupler that connects ladder-type sleepers that support rails in the longitudinal direction.

Generally, a railroad track is configured by fixing a pair of rails to a sleeper laid on a laying surface with a fastening bracket.
The sleepers constituting the track of this railway vehicle are made of concrete with a ladder structure having a pair of longitudinal beams arranged in parallel along the longitudinal direction of the rails and a joint material connecting the pair of longitudinal beams to each other. Ladder type sleepers are known (see, for example, Patent Document 1).
JP 2003-278101 A

By the way, when this type of ladder sleeper is used, it is important to ensure rigidity at the seam portion in the longitudinal direction.
However, there is currently no technique for connecting ladder-type sleepers easily and at low cost in a short time without performing special processing.

  An object of the present invention is to provide a sleeper coupler capable of connecting ladder-type sleepers in the longitudinal direction easily in a short time and at low cost without performing special processing on the ladder-type sleepers. Yes.

  In order to achieve the above object, the sleeper coupler of the present invention is a ladder type having a pair of longitudinal beams arranged in parallel along the longitudinal direction of the rail, and a joint material for coupling the pair of longitudinal beams to each other. A sleeper coupler that is attached to a longitudinal seam between sleepers and connects the ladder-type sleepers, and has a pair of connecting brackets having mounting recesses that can be fitted into the vertical beams from the side, and the coupling brackets And a clamp portion for fixing the wire to the vertical beam.

  According to the sleeper coupler of the present invention, the mounting recess of the connecting bracket is fitted from the side to the vertical beam at the seam portion of the ladder type sleeper, and the connecting bracket is fixed to the vertical beam by the clamp portion. Ladder type sleepers can be connected to each other in the longitudinal direction easily in a short time and at a low cost without any special processing. As a result, the connecting operation can be completed easily in an extremely short time even in the existing ladder type sleeper on the vehicle track.

  Further, the present invention is characterized in that the connecting fitting is made of H steel having flanges on the upper and lower sides of the web, and one of a pair of recesses formed by the web and the flange is the mounting recess. . Thus, since the connection fitting is made of high-rigidity H steel having flanges on the top and bottom of the web, the connection strength between the vertical beams can be increased.

Furthermore, the present invention is characterized in that at least one of the concave portions is provided with a reinforcing rib for fixing the web and the flange.
As described above, since the reinforcing ribs are provided, the rigidity of the connection fitting can be further increased, and the connection strength between the longitudinal beams can be further increased.

Further, the present invention is characterized in that the clamp portion includes a holding bolt that can be screwed into a female screw provided on an upper portion of the coupling fitting.
That is, by simply screwing the holding bolt, the connecting bracket can be fixed to the vertical beam very easily, and workability can be improved.

Furthermore, the present invention is characterized in that the clamp portion includes a pressing plate disposed between the pressing bolt and the longitudinal beam.
As described above, since the presser plate is disposed between the presser bolt and the vertical beam, the fastening force of the presser bolt can be dispersed by the presser plate, and the vertical force due to the fastening force acting on the vertical beam in a concentrated manner. It can be securely fixed while preventing damage to the beam.

Further, the present invention is characterized in that the pressing plate has a counterbore hole in which a tip end portion of the pressing bolt can be engaged.
Thereby, even if the pressing plate is slightly inclined, the fastening force from the pressing bolt can be reliably transmitted to the vertical beam through the pressing plate by engaging the tip of the pressing bolt with the counterbore hole. .

In addition, the present invention is characterized in that it includes a width stopping bolt that connects the connecting fittings facing each other.
In this way, since the connecting fittings facing each other are connected by the width-retaining bolt, the connecting fitting can be prevented from coming off from the vertical beam.

Furthermore, the present invention is characterized in that the width stop bolt and the coupling fitting are electrically insulated by an insulating material.
Thus, since the width stop bolt and the coupling metal are electrically insulated by the insulating material, the insulation state between the rails can be ensured, and the track circuit can be reliably maintained.

  According to the sleeper coupler of the present invention, ladder-type sleepers can be connected in the longitudinal direction easily in a short time and at low cost without performing special processing on the ladder-type sleepers.

The best mode for carrying out a railcar track according to the present invention will be described below with reference to the drawings.
1 is a plan view of a railcar track according to the present embodiment, FIG. 2 is a side view of the railcar track, FIG. 3 is a cross-sectional view of the railcar track, and FIG. FIG. 5 is a front view and a side view for explaining the structure of the connecting metal fitting, and FIG. 6 is a rear view for explaining the structure of the connecting metal fitting.

As shown in FIGS. 1 to 3, a railcar track 2 laid on a laying surface 1 covered with ballast has a concrete ladder sleeper 3.
The ladder-type sleeper 3 has a pair of vertical beams 4 arranged in parallel, and the vertical beams 4 are connected to each other by a joint material 6 to have a predetermined interval.

A rail 7 is provided on the upper surface of the vertical beam 4 of the ladder sleeper 3, and the rail 7 is fixed to the upper surface of the vertical beam 4 by a plurality of fastening portions 8 provided at intervals in the longitudinal direction. Has been. The fastening portion 8 has a pair of fastening hardware 8a, and both side portions of the rail 7 are fixed by the fastening hardware 8a.
And the wheel of a vehicle is mounted on the rail 7 fixed on the vertical beam 4 of this ladder type sleeper 3 so that rolling is possible, respectively, and a vehicle drive | works along the rail 7. FIG.

The ladder-type sleeper 3 constituting the vehicle track 2 configured as described above has a joint portion in the longitudinal direction connected by a sleeper connector 11.
The sleeper coupler 11 includes a pair of coupling brackets 12 that couple the respective vertical beams 4 to each other, and the coupling brackets 12 are coupled to each other by a width retaining bolt 13.

  As shown in FIGS. 4 to 6, the connecting fitting 12 is made of H steel in which a pair of flanges 15 are joined to the top and bottom of the web 14, and one of the recesses 16 formed from the web 14 and the flange 15. Is the mounting recess 16a. And this attachment recessed part 16a is engage | inserted by the vertical beam 4 in the seam part of the ladder type sleeper 3. FIG.

A clamp portion 10 is provided on the side of the mounting recess 16a in the vicinity of both ends of the connecting fitting 12 and in the center. The clamp portion 10 includes a female screw block 17 in which a female screw 18 is formed, and a presser bolt 31 described later that is screwed into the female screw 18 of the female screw block 17. These female screw blocks 17 are fixed to the upper flange 15 by welding, and a hole portion 19 formed in the upper flange 15 and a female screw 18 of the female screw block 17 communicate with each other.
The female screw 18 constituting the clamp portion 10 may be provided by welding and fixing a nut to the flange 15 or may be formed directly on the flange 15.

Reinforcing ribs 21 welded and fixed to the web 14 and the flange 15 are provided at both corners of the female screw block 17 at corners formed by the web 14 and the upper flange 15.
Reinforcing ribs 22 which are welded and fixed to the web 14 and the upper and lower flanges 15 are provided at intervals in the longitudinal direction in the other concave portion 16b on the back surface side of the connecting fitting 12.
Further, an insertion hole 23 through which the end of the width stop bolt 13 is inserted is formed in the vicinity of the center portion of the web 14 of the connection fitting 12.

A holding bolt 31 is screwed into the female screw 18 of the female screw block 17 from the hole 19 side of the upper flange 15 and protrudes toward the vertical beam 4 side of the ladder type sleeper 3 in the connecting metal 12 having the above structure. Yes.
Holding plates 32 and 33 are arranged between the tip of the holding bolt 31 and the upper surface of the vertical beam 4 of the ladder type sleeper 3.
When the holding bolt 31 is screwed into the female screw block 17, the vertical beam 4 is sandwiched between the flange 15 on the lower side of the connection fitting 12 and the holding plates 32 and 33, and the ladder type sleepers 3 are connected to each other at the joint portion. Are concatenated.

  As shown in FIG. 7, the holding plate 32 disposed on the side of the clamp portion 10 near the both ends of the connection fitting 12 has a counterbore hole 32 a corresponding to each holding bolt 31. Further, as shown in FIG. 8, a counterbore hole 33 a is also formed in the pressing plate 33 arranged on the clamp part side on the center side of the connection fitting 12.

And as shown in FIG. 9, the front-end | tip part of the holding | suppressing volt | bolt 31 enters and engages with the counterbore holes 32a and 33a of the said holding | suppressing plates 32 and 33, respectively.
Note that the holding plate 33 is provided with an engaging piece 33b that can be engaged with the end surface of the vertical beam 4 on one end side thereof.
In addition, a lock nut 34 and a locking nut 35 are screwed onto the holding bolt 31 at its root side.

  As shown in FIG. 10, the width stop bolt 13 is inserted into an insertion hole 23 formed in the web 14 of the connection fitting 12 and protrudes from the back side of the connection fitting 12. And the washer 41, the lock nut 42, and the locking nut 43 are attached in order to the edge part of this protruding width | variety stop bolt 13, By this, the connection metal fittings 12 which mutually oppose are mutually connected by the width | variety stop bolt 13. It is connected.

  The width stop bolt 13 is inserted through a cylindrical insulating collar 44 formed of an insulating resin, and the end of the insulating collar 44 is fitted into an insertion hole 23 formed in the web 14 of the connection fitting 12. Are combined. An insulating bush 45 made of an insulating resin is attached to the end of the insulating collar 44. The insulating bush 45 includes a connecting cylinder part 45 a and a flange part 45 b, and the connecting cylinder part 45 a is fitted in the insulating collar 44.

The connecting fitting 12 and the width stop bolt 13 are electrically insulated from each other by the insulating collar 44 and the insulating bush 45 so as not to affect the track circuit.
As shown in FIG. 11, the insulating collar 44 may be one in which a flange portion 44a is integrally formed at the end thereof. However, in this case, the insulating collar 44 is divided into two parts and inserted into the insertion holes 23 from the back side of the coupling metal 12 respectively.

Next, the case where the ladder type sleeper 3 of the existing vehicle track 2 is connected at the joint by the sleeper coupler 11 having the above structure will be described.
12-20 is each process drawing explaining the connection operation | work of ladder type sleepers.

(1) As shown in FIGS. 12A and 12B, the ballast of the laying surface 1 at the joint portion of the ladder type sleeper 3 is scraped out.

(2) As shown in FIG. 13, the connecting fittings 12 constituting the sleeper connector 11 are respectively arranged on the side portions of the longitudinal beams 4 to be connected.

(3) As shown in FIG. 14, an epoxy-based or mortar-based material is formed on the inner surface of the lower flange 15 that forms the mounting recess 16a of the connection fitting 12 and the contact surface with the vertical beam 4 of the pressing plates 32, 33, respectively. Adhesive 51 is applied.

(4) As shown in FIG. 15, the connecting bracket 12 on one side is fitted with the mounting recess 16 a in the vertical beam 4 and the holding bolt 31 screwed into the female screw 18 of the bolt block 17 and the upper surface of the vertical beam 4. The holding plates 32 and 33 are disposed between the two. At this time, the tip of the holding bolt 31 is inserted into the counterbore holes 32a and 33a of the holding plates 32 and 33.

(5) As shown in FIG. 16, the width stop bolt 13 inserted through the insulating collar 44 is inserted together with the insulating collar 44 into the insertion hole 23 formed in the web 14 of the connection fitting 12.

(6) As shown in FIG. 17, an insulating bush 45 is attached to the insulating collar 44, and a washer 41, a lock nut 42, and a locking nut 43 are attached to the end of the width stop bolt 13 in order.

(7) The other side fitting 12 is mounted on the vertical beam 4 by performing the same operations as in the above (4) to (6), and the sleeper coupler 11 is connected to the ladder type sleeper 3 as shown in FIG. Set at the seam.

(8) Tighten the lock nut 42 of the width retaining bolt 13 with a torque wrench, and then tighten the locking nut 43 while paying attention to the arrangement and excessive tightening of the connection fitting 12.
As a result, the coupling fittings 12 are secured to each other without being affected by the track circuit while ensuring an insulated state.

(9) As shown in FIG. 19, the presser bolts 31 are finally tightened with a torque wrench in order (numbered order in the figure) from both ends of the connecting fitting 12. As a result, the pressing plates 32 and 33 are pressed against the upper surface of the vertical beam 4 by the pressing bolt 31, whereby the vertical beam 4 is firmly held between the lower flange 15 of the connecting fitting 12 and the pressing plates 32 and 33. The ladder type sleepers 3 are connected to each other.
Here, even if the presser plates 32 and 33 are slightly inclined with respect to the presser bolt 31, the presser bolt 31 does not slide with respect to the presser plates 32 and 33, and the tip portion of the presser bolt 31 is counterbored. Enter 32a and 33a. Thereby, the fastening force from the holding bolt 31 is reliably transmitted to the holding plates 32 and 33.
Further, even when the position of the holding bolt 31 is shifted with respect to the vertical beam 4 due to the vehicle track 2 being curved, the fastening force of the holding bolt 31 is surely applied to the vertical beam 4 by the holding plates 32 and 33. Can be communicated to.

(10) As shown in FIG. 20, the lock nut 34 and the locking nut 35 are tightened so that the presser bolt 31 does not loosen.
(11) When the connection between the ladder type sleepers 3 by the sleeper connecting tool 11 is completed, the ballast is put under the seam portion of the ladder type sleeper 3 and hardened to complete the operation.

As described above, according to the sleeper coupler according to the above-described embodiment, the mounting recess 16a of the coupling bracket 12 is fitted into the vertical beam 4 at the joint portion of the ladder-type sleeper 3, and the coupling bracket 12 is By fixing to the beam 4, the ladder type sleepers 3 can be connected in the longitudinal direction easily in a short time and at low cost without performing special processing. As a result, the connecting work can be completed easily in an extremely short time even in the ladder sleeper 3 of the existing vehicle track 2.
Moreover, since the connection metal fitting 12 consists of high rigidity H steel which has the flange 15 on the upper and lower sides of the web 14, the connection intensity | strength of the vertical beams 4 can be raised.

Furthermore, since the reinforcing ribs 21 and 22 are provided, the rigidity of the connection fitting 12 can be further increased, and the connection strength between the vertical beams 4 can be further increased.
Further, by simply screwing the holding bolt 31, the connecting fitting 12 can be fixed to the vertical beam 4 very easily, and workability can be improved.

  Furthermore, since the presser plates 32 and 33 are disposed between the presser bolt 31 and the vertical beam 4, the fastening force of the presser bolt 31 can be dispersed by the presser plates 32 and 33, and the fastening force is concentrated in the vertical direction. The vertical beam 4 can be securely fixed while being prevented from being damaged by acting on the beam 4.

Even if the presser plates 32 and 33 are slightly inclined, the fastening force from the presser bolt 31 is applied via the presser plates 32 and 33 by engaging the tip of the presser bolt 31 with the counterbore holes 32a and 33a. It is possible to reliably transmit to the longitudinal beam 4.
Further, since the connecting fittings 12 facing each other are connected by the width-retaining bolts 13, it is possible to prevent the connecting fitting 12 from coming off from the vertical beam 4.

  Further, since the width stop bolt 13 and the coupling metal 12 are electrically insulated by the insulation collar 44 and the insulation bush 45, a good insulation state between the rails 7 can be secured, and the track circuit is reliably maintained. can do.

1 is a plan view of a railcar track according to an embodiment of the present invention. It is a side view of a railcar track. It is sectional drawing of the track for rail vehicles. It is a top view of a connection metal fitting explaining the structure of a connection metal fitting. It is the front view and side view explaining the structure of a connection metal fitting. It is a rear view explaining the structure of a connection metal fitting. It is a top view explaining the shape of a pressing plate. It is a top view explaining the shape of a pressing plate. It is sectional drawing in the contact location of a pressing plate and a pressing bolt. It is sectional drawing in the connection location which shows the connection structure of the width stop bolt to a connection metal fitting. It is sectional drawing in the connection location which shows the other connection structure of the width stop bolt to a connection metal fitting. It is each process drawing explaining the connection operation | work of ladder type sleepers by a sleeper connection tool. It is each process drawing explaining the connection operation | work of ladder type sleepers by a sleeper connection tool. It is each process drawing explaining the connection operation | work of ladder type sleepers by a sleeper connection tool. It is each process drawing explaining the connection operation | work of ladder type sleepers by a sleeper connection tool. It is each process drawing explaining the connection operation | work of ladder type sleepers by a sleeper connection tool. It is each process drawing explaining the connection operation | work of ladder type sleepers by a sleeper connection tool. It is each process drawing explaining the connection operation | work of ladder type sleepers by a sleeper connection tool. It is each process drawing explaining the connection operation | work of ladder type sleepers by a sleeper connection tool. It is each process drawing explaining the connection operation | work of ladder type sleepers by a sleeper connection tool.

Explanation of symbols

3 Ladder type sleeper 4 Longitudinal beam 6 Joint 7 Rail 10 Clamp part 11 Sleeper connector 12 Connecting bracket 13 Width retaining bolt 14 Web 15 Flange 16 Recess 16a Mounting recess 18 Female screw 21, 22 Reinforcement rib 31 Retaining bolt 32, 33 Retaining Plate 32a, 33a Counterbored hole 44 Insulation collar (insulating material)
45 Insulating bush (insulating material)

Claims (8)

These ladder-type sleepers are attached to the seams in the longitudinal direction of ladder-type sleepers having a pair of longitudinal beams arranged in parallel along the longitudinal direction of the rails and a joint for connecting the pair of longitudinal beams to each other. A sleeper connector that connects each other,
A sleeper coupler comprising a pair of connecting brackets having a mounting recess that can be fitted to the longitudinal beam from the side, and a clamp portion that fixes the coupling bracket to the longitudinal beam.   The said connection metal fitting consists of H steel which has a flange on the upper and lower sides of a web, and one side of a pair of recessed part formed from these webs and a flange is the said attachment recessed part, The Claim 1 characterized by the above-mentioned. Sleeper coupler.   The sleeper connector according to claim 2, wherein a reinforcing rib for fixing the web and the flange is provided in at least one of the recesses.   The sleeper coupler according to any one of claims 1 to 3, wherein the clamp portion includes a holding bolt that can be screwed into a female screw provided on an upper portion of the coupling fitting.   The sleeper coupler according to claim 4, wherein the clamp portion includes a pressing plate disposed between the pressing bolt and the vertical beam.   The sleeper connector according to claim 5, wherein the pressing plate has a counterbore hole into which a tip end portion of the pressing bolt can be engaged.   The sleeper coupler according to any one of claims 1 to 6, further comprising a width-retaining bolt that couples the coupling fittings facing each other. The sleeper coupler according to claim 7, wherein the width-retaining bolt and the coupling fitting are electrically insulated by an insulating material.

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