JP3444647B2 - Sleeper joint structures and sleeper joints - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sleeper joint structure and a sleeper joint used for the sleeper joint structure. In particular, the present invention relates to a joining structure suitable for a synthetic sleeper and a joining joint used for the joining structure of this sleeper.

[0002]

2. Description of the Related Art In railways, a branch portion is provided to branch a vehicle on a track to another track or to cross another track. At this branch, the type of branch (branch, single-slip switch branch, double-slip switch branch, crossover branch, crossover branch, double-track branch, three-branch branch, three-wire branch, diamond crossing, shisa crossing, etc.) Depending on the location, sleepers of various lengths are used. For example, a length of 6-9 m is required.

However, in an overcrowded urban area, an elevated line portion, or a place surrounded by a soundproof wall, the above 6 to 9 m
If a long sleeper is handled as a single piece, the workability is inevitably reduced, and in particular, the update work of the sleeper becomes extremely difficult. Therefore, a joining type sleeper for joining the sleeper pieces is used. In this joint type sleeper, sleeper pieces are inserted under the rails from both sides of the branching portion, and the inserted sleeper pieces are joined. Conventionally,
To join the sleeper pieces, the tip end of the sleeper piece is shaped into a male-female step, so-called piece stripping, and these step sections are overlapped,
The overlapping portion is fastened with bolts and nuts.

Further, as described in JP-A-5-51901, a method of cutting a joining surface of a sleeper piece into a taper shape and adhering this joining surface with an adhesive, and JP-A-510902. There is also known a method in which side members are provided on both sides of the sleeper piece, and a frame-shaped member is bridged over the side members to fix the side members. In addition, bolt side metal side members attached to both sides and top and bottom of the sleeper piece.
A connection method of fixing with a nut is also known.

[0005]

However, in the joint structure in which the joint surface of the sleeper piece is stripped off, these are superposed, and the superposed portion is fastened with the bolts and nuts, it is necessary to tighten the bolts and nuts. Therefore, it is necessary to remove the ball just under the sleeper joining part and attach the nut or insert the spanner, which causes a problem in workability. The connection method of fixing metal side members to the upper and lower surfaces of the sleeper piece with bolts and nuts also has the same problem.

The method of making the joining surface of the sleeper piece into a taper shape and adhering this joining surface with an adhesive or providing a side member and fixing the side member by bridging the frame-shaped member on this side member is called a joining strength. Is small, the joint surface is peeled off during frequent passing of the train, or the frame-shaped member is disengaged from the side member to remove the side member, which causes a problem that the joint portion of the sleeper is bent. Further, the method of attaching the metal side member with the bolts and nuts has a small vertical strength, and the metal side member and the wooden sleepers are corroded. Further, there is a problem that looseness often occurs at the joint portion while the train is passing through. In addition, there is a problem that an electric current is passed through the metal member, which causes malfunction of a signal or the like.

Recently, sleepers made of long-fiber reinforced thermosetting resin foam, so-called synthetic sleepers, have recently been used in place of wooden sleepers, but these synthetic sleepers are corroded and current flows. However, it is difficult to strip or taper this synthetic sleeper piece, and while the train often passes over rails attached to joined sleepers, this sleeper There is a problem that the bolts and nuts that penetrate the inside vibrate and play occurs. Therefore,
The object of the present invention is to eliminate the above-mentioned problems, namely, good workability,
(EN) Provided are a sleeper joint structure that can be firmly joined without rattling even if a train passes frequently, and a sleeper joint used for this sleeper joint structure.

[0008]

The present invention has been made to achieve the above object, and the invention of the joining structure of the sleeper according to claim 1 is a sleeper made of a synthetic resin cylinder having a quadrangular cross section. From both ends of the joint, a sleeper piece having a notch at a depth corresponding to the thickness of the upper wall of the sleeper joint on the upper surface was inserted, and the upper surface of the sleeper joint and the upper surface of the sleeper piece were substantially flush with each other. In this state, the sleeper joint and the sleeper piece are adhered to each other with an adhesive, and the sleeper piece and the sleeper joint are fixed by a nail or a screw nail reaching the sleeper piece from the surface of the sleeper joint.

Further, in the invention of the sleeper joint of the second aspect , a stopper which is erected at a substantially right angle is provided inside the cylindrical body of the synthetic resin cylindrical body at a substantially central portion. Further, the invention of the sleeper joint according to claim 3 is a tubular body made of synthetic resin having a quadrangular cross section, in which the central portion of the lower side wall is thick and is gradually thinned toward both end portions. Moreover, the claim
The invention of the sleeper joint of No. 4 is a synthetic resin cylinder having a quadrangular cross section, and the lower side wall is longer than the upper side wall.

The sleeper pieces used in the present invention are joined together to form a sleeper. As such sleepers, processed sleepers are often used, but when manufacturing short sleepers by joining short normal sleepers, use these short normal sleepers in the same manner as sleeper pieces. Therefore, this short normal sleeper is also included in the sleeper piece of the present invention. Further, it may be a wooden sleeper or a sleeper made of a long fiber reinforced thermosetting resin foam, that is, a so-called synthetic sleeper. The synthetic resin cylinder used in the present invention is formed by molding a synthetic resin such as a thermoplastic resin such as vinyl chloride resin or a thermosetting resin such as polyester resin into the cylinder. In particular, a fiber-reinforced polyester resin (FRP) cylinder is suitable.

As the cross-sectional shape, any shape such as a circle or a quadrangle can be used. However, since sleepers generally have a quadrangular cross-section, a quadrangular cross-section is preferable. When connecting the sleeper pieces with this synthetic resin tubular body, it is preferable that the upper surfaces are substantially in the same plane because an iron plate or tie plate can be laid on the sleepers or a rail can be attached. . In order to make the upper surfaces flush with each other as described above, the upper surface of the joint portion of the sleeper piece is previously cut to a depth corresponding to the thickness of the upper side wall of the sleeper joint, and the notch portion is formed as in the pawl of claim 2. It should be provided. In the present invention, it is particularly preferable to use a synthetic sleeper as the sleeper piece and FRP as the sleeper joint because they have almost the same material and thus have a large adhesive strength when bonded with an adhesive and can firmly bond.

[0012]

When the sleeper is attached to the lower side of the rail already laid, as in the case of updating the sleeper, an example of a construction method of the sleeper joining structure according to claim 1 of the present invention will be described. removing the ballast directly under position, the the upper surface
A notch cut to a depth corresponding to the thickness of the upper wall of the sleeper joint
Insert the sleeper piece with the cutout from the left and right under the rail, apply adhesive to the inner peripheral surface of the sleeper joint made of a synthetic resin cylinder and the outer peripheral surface of the joint end of the sleeper piece, and use both sleepers Insert the tip of one of the pieces into the ends of the sleeper fitting so that the top of the sleeper fitting and the sleeper
The upper surface of the piece and the upper surface of the piece are joined to be substantially flush with each other.
If left for a while, the two will be firmly bonded with an adhesive.

Further, as an example of a construction method for newly laying a rail, at the construction site, an adhesive is applied to the outer peripheral surface of the joining end portion of the sleeper piece and the inner peripheral surface of the sleeper joint to make the sleeper piece. Insert the tip of the into the ends of the sleeper joint and glue it to make a long sleeper, install it in place and lay rails on this sleeper. Since the joining structure of the sleeper of the present invention is constructed in this manner, it is not necessary to mount a nut or insert a spanner, and thus the construction can be easily carried out. Moreover, since the structure of the joint portion thus constructed does not use metal, electricity is not conducted, and signals and the like do not malfunction.

Further, since the sleeper joint is a cylindrical body and the upper side wall, the lower side wall and the lateral side wall are integrated, the mechanical strength against the force from the side surface is large. And, the joint portion of the present invention, since the sleeper is inserted and adhered in this sleeper joint,
It is more firmly joined than the conventional one with side members attached to the top and bottom or both sides, and will not be damaged even if a train passes. Further, since the sleeper piece and the sleeper joint are adhered to each other, this joint portion is not detached. Further, in the present invention, since the sleeper joint made of a light synthetic resin is used, it is easy to handle and easy to construct.

[0015] Furthermore, when fastening the sleeper pieces and sleepers joint with nails or screws nails from the surface of the sleeper fittings reaches sleepers pieces, curing of the adhesive is made sufficiently joint becomes firm. Claim 2
When using a sleeper joint in which a stopper projecting at a substantially right angle inside the cylindrical body is provided in the central portion of the synthetic resin cylindrical body as in the invention of 1), when inserting the sleeper piece, it is inserted until it reaches this stopper. You can insert it easily,
There is no shortage or excessive insertion of sleeper pieces.

Usually, the joint portion of the sleepers has the weakest mechanical strength, in particular, the bending strength, but as in the invention of claim 3 , the central portion of the lower side wall is thick and becomes gradually thinner toward both ends. When the sleeper joint is used, the mechanical strength of the central portion of the sleeper joint is increased, and the insufficient strength of the joint portion of the sleeper can be compensated. Therefore, this part does not break. Further, since a large load is applied to the lower side wall when the train passes, this portion is easily peeled off. However, when a sleeper joint in which the lower side wall is longer than the upper side wall is used as in claim 4 , this portion is The adhesion area is large and this part does not peel off or break.

[0017]

EXAMPLES Examples of the present invention will be described below. Figure
1 shows an embodiment of the present invention, (a) is a perspective view of a joint portion, and (b) is a BB cross-sectional view of (a). FIG. 2 shows another embodiment of the present invention and is a sectional view of a joint portion. FIG. 3 shows still another embodiment of the present invention and is a cross-sectional view of a joint portion. FIG. 4 shows still another embodiment of the present invention and is a cross-sectional view of a joint portion. FIG. 5 shows still another embodiment of the present invention and is a cross-sectional view of a joint portion. Figure 6
[Fig. 10] Fig. 10 shows still another embodiment of the present invention, and is an explanatory view showing a state in which sleeper pieces are joined by a sleeper joint.

In FIG. 1, 1a is a wooden sleeper piece. 2a is a sleeper joint made of FRP, and this sleeper joint 2
a is a tubular body having a quadrangular cross section. The upper surface 11 of the joining portion of the sleeper piece 1a is cut by the thickness of the upper side wall 21 of the sleeper joint 2a . The shape of the inner peripheral surface of the cross section of the sleeper joint 2a is substantially the same as the cross section of the joint portion of the sleeper piece 1a .

Next, the method and action of joining the sleeper pieces will be described. The upper surface of the sleeper piece 1a is cut out to a depth corresponding to the thickness of the upper side wall 21 of the sleeper joint 2a to provide a cutout portion. When attaching the sleepers to the underside of the already laid rail, remove the ballast immediately below the sleeper joining point, insert the sleeper pieces 1a under the rails from both sides, that is, the outer peripheral surface of the joining portion of the sleeper pieces 1a , that is, Apply epoxy adhesive to the top, bottom and sides. On the other hand, an epoxy adhesive is also applied to the inner peripheral surface of the sleeper joint 2a . The sleeper fittings 2a by inserting the sleeper pieces 1a from both side ends of, as shown in FIG. 1, serves the end face 25 of the stopper of the end face 25 is abutted against the end face of the sleeper fittings 2a (notch notch Leave) for a while. Then, the sleeper joint is firmly bonded by the adhesive.
2a and the sleeper piece 1a are adhered to each other, and from the upper surface of the sleeper joint 2a
The long sleepers are completed by driving the nails 4 onto the sleeper pieces 1a .
Backfilling the ballast under this sleeper and joining the rail and sleeper completes the construction.

When laying a new rail, the outer peripheral surface of the joining portion of the sleeper piece 1a and the sleeper joint 2a at the construction site.
An epoxy adhesive is applied to the inner peripheral surface of, and the sleeper pieces 1a are inserted from both ends of the sleeper joint 2a to complete a long sleeper.
Lay this long sleeper in place and lay the rail on it. Thus, the joint structure of this sleeper is easy to construct. Also, because the top surface of this sleeper is flat,
Rails can be laid on this joint, and iron plates and tie plates can be attached. When this long sleeper is used for the branch portion, the sleeper piece 1a and the sleeper joint 2a are firmly bonded with an adhesive, and the end surface 25 of the cutout portion is the sleeper joint.
Coupled with the fact that it was difficult to break due to being caught on the end face of 2a, the joint could be used for a long time without breaking or peeling. In addition, since no metal is used for the completed sleeper, a current does not flow and a signal does not malfunction.

Further, only by nailing the nail 4 from the upper surface of the sleeper joint 2a to the sleeper piece 1a, the sleeper 1 according to the embodiment shown in FIG.
The joint strength between a and the sleeper joint 2a was increased.

Next, the embodiment shown in FIG. 2 will be described. When the sleeper joint 2b shown in FIG. 2 is compared with the sleeper joint 2 shown in FIG. 1, it is different in that the sleeper joint 2b is provided with a stopper 3 which stands up at a substantially right angle on the inner surface of the central portion. When this sleeper joint 2b is used, when the sleeper piece 1b is inserted, the sleeper piece 1b may be inserted until it abuts on the stopper 3, so that the construction is simplified. Further, since the stopper 3 is provided, the bending strength becomes large, and therefore, even if the train passes over the stopper 3, the sleeper joint 2b is hard to break. Others are the same as the embodiment shown in FIG.

Next, the embodiment shown in FIG. 3 will be described. Comparing the sleeper joint 2c shown in the embodiment shown in FIG. 3 with the sleeper joint 2c shown in FIG. 1, the sleeper joint 2c has a lower side wall 22c.
The difference is that the thickness of the is thicker in the central part and becomes thinner toward both sides. When this sleeper joint 2c is used, since the central portion of the sleeper joint 2c is hard to be broken, the strength of the sleeper joined by this sleeper joint 2c is larger than that of the sleeper shown in FIG. Hard to break even if the train passes above. Others are the same as the embodiment shown in FIG.

Next, the embodiment shown in FIG. 4 will be described. The sleeper joint 2d shown in FIG. 4 is different in that the lower side wall 22d is longer than the upper side wall 21d, and the lateral side wall 23d has a trapezoid in which the lower piece is longer than the upper piece. Others are Figure 1
It is the same as the sleeper fitting used for. In this sleeper joint 2d, the lower side wall 22d is longer than the upper side wall 21d,
The lower adhesive area of the sleeper piece 1d and the sleeper joint 2d is large, and the end surface 25d of the cutout portion of the sleeper piece 1d acts as a stopper, and the end surface 25d is caught on the end surface of the sleeper joint and is difficult to break. Combined with this, the adhesive strength is increased and peeling is less likely to occur, which is preferable. That is, normally, when a train passes, a downward pushing force is applied, but since the adhesive strength of this portion is large, it is difficult to peel it off.

Next, the embodiment shown in FIG. 5 will be described. While the lower wall 22e is longer than the sleepers joint. 2e upper wall 21e similarly to the embodiment shown in FIG. 4 shown in FIG. 5,
The difference is that a side wall 23e having a step on the side surface is provided. Others are the same as the embodiment shown in FIG.

Next, the embodiment shown in FIG. 6 will be described. When the embodiment shown in FIG. 6 is compared with the embodiment shown in FIG. 1, the upper surface 11f of the sleeper piece 1f has the upper wall 2 of the sleeper joint 2f.
The difference is that not only the thickness of 1f is cut, but also the side surface 13 is cut by the thickness of the side wall 23f of the sleeper joint. Using this sleeper joint 2f, the sleeper to which the sleeper piece 1f is joined in the same manner as in FIG.
Stronger than the sleepers shown in FIG. Others are the same as the embodiment shown in FIG.

[0027]

As described above, the joining structure of the sleepers of the present invention is convenient because it can be easily constructed. Further, since the sleeper joint used for the joint structure of this sleeper is a tubular body having a large bending strength, when the sleeper joint is joined, even if the train passes over the rail laid on it, the train is hard to break. Further, since the sleeper piece and the sleeper joint are adhered to each other, it is difficult to peel them off, so that the sleeper piece and the sleeper joint are not separated from each other. or,
Since this sleeper joint is made of synthetic resin, it is light and has good workability.

[0028] Also, since the fastening of the sleepers piece and sleepers joint with nails or screws nails from the surface of the sleeper fittings reaches sleepers pieces, sufficient curing can not be obtained bonding strength of the adhesive is further increased.
Further, as in claim 2 , if a stopper which is raised substantially at a right angle is provided inside the cylinder in the central portion of the sleeper joint, the sleeper piece can be easily inserted and processed at the time of construction, and the bending strength can be improved. Since it becomes larger, it is hard to break so it is safe.

[0029] Also, as claimed in claim 3, the lower wall of the sleeper fittings thickened central portion, when thinner as yuku at both ends, the mechanical strength of the central portion is increased, bonding the sleepers piece in this sleeper fittings Then, it is hard to break at the joint, which is safe. or,
When the lower side wall of the sleeper joint is made longer than the upper side wall as in claim 4 , the bonding area between the lower side wall and the sleeper piece becomes large, and therefore the bonding strength becomes large. When the sleepers are joined together, the lower side wall and the sleepers are less likely to peel off when a force is applied to the sleepers from above, which is a relief. As described above, the present invention is valuable because it has various effects.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, in which (a) is a perspective view of a joint portion, and (b) is a sectional view taken along line BB of (a).

FIG. 2 shows another embodiment of the present invention and is a cross-sectional view of a joint portion.

FIG. 3 shows still another embodiment of the present invention and is a cross-sectional view of a joint portion.

FIG. 4 shows still another embodiment of the present invention and is a cross-sectional view of a joint portion.

FIG. 5 shows still another embodiment of the present invention and is a cross-sectional view of a joint portion.

FIG. 6 shows still another embodiment of the present invention and is an explanatory view showing a state in which sleeper pieces are joined by a sleeper joint.

[Description of Reference Signs] 1a, 1b, 1f Sleeper pieces 11, 11f Top surface 13 Side surfaces 2a, 2b, 2c, 2d, 2e, 2f Sleeper joints 21, 21d, 21e, 21f Upper side walls 22c, 22d, 22e Lower side walls 23d, 23e , 23f Side wall 3 Stopper 4 Nail

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Claims (4)

(57) [Claims] 1. A sleeper piece having a notch cut out at a depth corresponding to the thickness of the upper side wall of the sleeper joint is inserted from both ends of the sleeper joint made of a synthetic resin cylinder having a quadrangular cross section. With the upper surface of the sleeper joint and the upper surface of the sleeper piece substantially flush with each other, the sleeper joint and the sleeper piece are adhered with an adhesive, and further, with nails or screw nails that reach the sleeper piece from the surface of the sleeper joint. A sleeper joining structure characterized in that a sleeper piece and a sleeper joint are fixed to each other. 2. A sleeper joint characterized in that a stopper which is raised at a substantially right angle is provided inside the cylindrical body of the synthetic resin cylindrical body at a substantially central portion. 3. A synthetic resin cylinder having a rectangular cross section,
A sleeper joint characterized in that the central portion of the lower side wall is thick and gradually becomes thinner toward both end portions. 4. A synthetic resin cylinder having a quadrangular cross section,
A sleeper joint characterized in that the lower side wall is longer than the upper side wall.