JP6557558B2 - Rail fastening device with screw-type shoulder - Google Patents

Description

  The present invention relates to a rail fastening device that fastens a rail to a bearing body such as concrete sleeper, and more particularly to a rail fastening device with a screw-type shoulder equipped with a wire spring clip that presses the rail toward the bearing body.

  Conventionally, as a rail fastening device with a screw-type shoulder, as shown in FIGS. 11 to 13, a wire spring clip 510 that elastically presses the rail R toward a support body S such as a concrete sleeper, and the wire spring clip 510. The shoulder 520 having a clip mounting hole 521 for inserting the one end portion 511 of the wire spring in the longitudinal direction of the rail, and the other end portion 513 of the wire spring clip 510 are brought into contact with the rail bottom R2 of the rail R toward the support S. Insulator 530 to be pressed, embedded plug 540 embedded in the support S and opening toward the shoulder 520, female threaded portion 522a threaded in the vertical direction of the shoulder 520, and female threaded portion 541a threaded in the embedded plug 540 And at least a fastening bolt 550 for fixing the shoulder 520 to the support S by screwing with (E.g., see Patent Document 1).

Japanese Patent No. 4828327 (refer to the claims and FIG. 1 in particular).

  However, in the screw fastening shoulder-equipped rail fastening device 500 described in Patent Document 1 described above, the embedded plug 540 is embedded in the support body S on the left and right sides of the rail R at predetermined installation intervals. For example, in order to run a heavy train, an attempt is made to change a 50 kg rail (a rail having a weight of 50 kg per 1 m) to a 60 kg rail R having a wide bottom (a rail having a weight of 60 kg per 1 m). In this case, in the 60 kg rail R having a bottom width wider than the 50 kg rail, the space from the rail bottom portion R2 to the embedded plug 540 is narrowed by 9 mm due to the track standard size.

  Therefore, the existing shoulder 520 as shown in FIGS. 14 and 15 includes a front portion 523 that makes the front surface 523a contact the insulator 530 disposed on the rail bottom portion R2, and a rear portion 524 that makes contact with the receptacle 570. In addition, a clip mounting hole 521 is provided in the rail longitudinal direction so as to be parallel to the rail R on the side surface 523b of the front portion 523, and a bolt screw hole 522 is provided on the arc-shaped front upper surface 523c. As described above, when the space from the rail bottom R2 to the embedded plug 540 is narrowed by 9 mm, there is room for inserting the insertion locking portion 532 of the insulator 530, as described above. The insulator 530 can no longer be assembled, and the shoulder 1 is installed after the insulator 530 is assembled. When trying to attach 0, the shoulder 120 cannot be attached to the embedded plug 540 via the fastening bolt 550. To solve this problem, if the shoulder 520 is thinned by the narrowed 9 mm, sufficient fastening is achieved. There was a problem that strength could not be obtained.

  Moreover, when trying to change the laying from the 50 kg rail to the 60 kg rail R having a wide bottom, the space from the rail bottom R2 to the embedding plug 540 of the rail R having a wide bottom is compared with the case where the 50 kg rail is laid. Then, since there is a shortage of only 9 mm, even if it is attempted to solve this from the viewpoint of the installation form of the embedded plug 540 with respect to the support body S, the embedded plug 540 having a relatively larger outer diameter than 9 mm is connected to the support body S. Re-embedding in substantially the same embedding position causes a decrease in strength of the support body S, and two kinds of embedded plugs 540 corresponding to the 50 kg rail and the 60 kg rail are embedded in the support body S in advance. It is not allowed in view of the installation space. Eventually, the large rail-laying that dismantles and replaces the existing support body S made of concrete sleepers. Unless you work, there has been a troublesome problem that can not be laid modified rail R of the wider bottom width.

  Therefore, the present invention solves the above-mentioned problems. That is, the object of the present invention is to reduce the space from the rail bottom to the embedding plug when replacing the rail with a wide bottom width. However, a rail fastening device with a screw-type shoulder that can easily install a rail having a wide bottom width without changing the embedding interval of the embedding plug to the support body and sufficiently secures the screwing strength between the shoulder and the fastening bolt. Is to provide.

  The invention according to claim 1 is a linear spring clip that elastically presses the rail toward a support body such as concrete sleeper, and one end portion of the linear spring clip is inserted and supported in the rail longitudinal direction. A shoulder having a clip mounting hole, an insulator that contacts the other end portion of the wire spring clip and presses the rail bottom of the rail toward the support body, and is embedded in the support body and opens toward the shoulder. At least composed of an embedding plug, and a bolt bolt hole screwed in the vertical direction of the shoulder and a bolt bolt screwed into the bolt screw hole threaded on the embedding plug to fix the shoulder to the support body In the rail-type fastening device with a threaded shoulder, the shoulder bolt screw hole projects downward from the rail-side bottom of the shoulder to the opening of the embedded plug. The above-mentioned problem has been solved by being provided through the reinforcing boss part that protrudes and the reinforcing boss part that protrudes from the rail side bottom of the shoulder to the rail side and supports the reinforcing boss part. Is.

  Further, the invention according to claim 2 is characterized in that, in addition to the configuration according to claim 1, the opening of the embedded plug has an inner diameter that can be freely fitted to the reinforcing boss of the shoulder. The above-described problems are further solved.

  According to a third aspect of the present invention, in addition to the structure of the first or second aspect, the male screw portion for the shoulder of the fastening bolt is longer than the total length of the female screw portion formed in the bolt screw hole of the shoulder. Thus, the above-described problems are further solved.

  According to a fourth aspect of the present invention, in addition to the structure of any one of the first to third aspects, the male screw portion for the shoulder of the fastening bolt has a smaller diameter than the male screw portion for the embedded plug of the fastening bolt. By being formed, the above-described problems are further solved.

  The rail-type fastening device with a threaded shoulder according to the present invention includes a wire spring clip that elastically presses the rail toward a support body such as a concrete sleeper, and one end portion of the wire spring clip is inserted in the rail longitudinal direction. A shoulder provided with a clip mounting hole for supporting, an insulator that contacts the other end portion of the wire spring clip and presses the rail bottom of the rail toward the support body, and is embedded in the support body toward the shoulder. And a fastening bolt for fixing the shoulder to the support body by screwing into a bolt screwing hole screwed in the vertical direction of the shoulder and a bolt screwing hole screwed into the plug. In addition to being able to fasten the rail to a support such as concrete sleepers, it has the following unique effects. It is possible.

  In the invention according to claim 1, the shoulder bolt screw hole protrudes downward from the bottom of the shoulder on the rail side and protrudes downward from the bottom of the shoulder of the embedding plug. By projecting to the rail side and extending through the reinforcing overhanging portion that supports the reinforcing boss portion, the shoulder screwing region with respect to the fastening bolt is provided so that the reinforcing boss portion protrudes from the shoulder. If the rail side bottom that surrounds the shoulder bolt screw hole is reinforced on the rail side by the amount provided by overhanging the shoulder reinforcement overhang, it is necessary to replace the rail with a wide bottom width. Specifically, when replacing the 50 kg rail with the 60 kg rail, the embedding interval of the embedding plug is not changed even if the arrangement interval between the rail bottom and the embedding plug becomes narrower. Screwing strength between the shoulder and the fastening bolt as well as easily installed rails wider bottom width can be sufficiently secured.

  In addition to the effect of the invention according to claim 1, the invention according to claim 2 has an inner diameter that allows the opening of the embedded plug to freely fit with the reinforcing boss of the shoulder. Since the opening of the embedding plug is unevenly fitted without interfering with the shoulder reinforcing boss, a sufficient screwing area between the fastening bolt and the shoulder is created without changing the embedding level of the embedding plug. At the same time, the shoulder can be positioned with respect to the embedded plug.

  In the invention according to claim 3, in addition to the effect of the invention according to claim 1 or claim 2, the male screw portion for the shoulder of the fastening bolt is longer than the total length of the female screw portion formed in the bolt screw hole of the shoulder. Therefore, even if the amount of the fastening bolt screwed into the embedded plug is adjusted when the fastening bolt is attached to the embedded plug, the male screw portion for the shoulder of the fastening bolt is the entire area of the female screw portion formed on the shoulder. Since they are screwed together, sufficient fastening strength between the fastening bolt and the shoulder can be exhibited to prevent the shoulder from coming out of the fastening bolt.

  In the invention according to claim 4, in addition to the effect of the invention according to any one of claims 1 to 3, the male screw portion for the shoulder of the fastening bolt has a smaller diameter than the male screw portion for the embedded plug of the fastening bolt. Since the shoulder boss portion of the fastening bolt has a smaller diameter, the shoulder boss portion for the shoulder can be formed relatively thick so that the boss for reinforcement formed on the shoulder is formed. The strength of the part can be strengthened.

The front view which showed a part of rail fastening device with a screw type shoulder which is an Example of this invention in the cross section. The top view of the rail-type fastening device with a screw type shoulder shown in FIG. The exploded assembly figure of the rail type | formula fastening apparatus with a screw type shoulder shown in FIG. The perspective view which looked at the shoulder used in the present Example from the upper part. The perspective view which looked at the shoulder used in the present Example from the lower part. The perspective view of the fastening bolt used in the present Example. The figure which shows the screwing state of a shoulder, a fastening volt | bolt, and an embedding plug, and explanatory drawing which expanded the part. The perspective view of the rail pad used in the present Example. The perspective view of the insulator used in the present Example. The perspective view of the receptacle used in the present Example. The front view which showed a part of conventional rail fastening device with a screw type shoulder in cross section. The top view of the rail fastening apparatus with a screw type shoulder which is the conventional Example. The exploded assembly figure of the conventional rail fastening device with a screw type shoulder. The perspective view which looked at the conventional shoulder from the upper part. The perspective view which looked at the conventional shoulder from the downward direction.

  The present invention includes a wire spring clip that elastically presses the rail toward a support body such as a concrete sleeper, and a clip mounting hole that inserts and supports one end portion of the wire spring clip in the longitudinal direction of the rail. An insulator that abuts against the other end of the wire spring clip and presses the rail bottom of the rail toward the support body, an embedded plug that is embedded in the support body and opens toward the shoulder, Rail fastening with a screw-type shoulder comprising at least a bolt screw hole screwed in the vertical direction and a fastening bolt screwed into the bolt screw hole screwed into the embedded plug to fix the shoulder to the support body In the apparatus, the shoulder bolt screw hole protrudes downward from the rail-side bottom portion of the shoulder and has a reinforcing boss portion that fits into the opening portion of the embedding plug and the above-mentioned shim. The space from the bottom of the rail to the embedding plug is installed through the reinforcement overhanging part that extends from the rail side bottom of the rudder to the rail side and supports the reinforcing boss part. Even if the width is narrow, it is possible to simply install a rail with a wide bottom width without changing the predetermined embedding interval of the embedding plug to the support body and sufficiently secure the screwing strength between the shoulder and the fastening bolt. The specific embodiment may be anything.

  For example, as for the specific form of the support body used in the rail fastening device with a threaded shoulder according to the present invention, if it is made of concrete in which embedded plugs are embedded at a predetermined embedding interval, vibration-proof sleepers, roadbeds Any material such as an elastic sleeper can be used.

  As for the specific form of the rail to which the rail fastening device with a screw-type shoulder of the present invention is applied, if it exhibits an inverted T-shaped rail cross section having a wide and flat bottom with respect to the rail head, Usually, any rail such as a 50 kg rail (a rail having a weight of 50 kg per 1 m in length) and a 60 kg rail having a wider bottom width (a rail having a weight of 60 kg per 1 m in length) may be used.

  The shoulder used in the rail fastening device with a threaded shoulder according to the present invention has a clip mounting hole for inserting and supporting one end portion of the wire spring clip, and protrudes downward from the rail-side bottom portion of the shoulder so as to be embedded. There is a bolt screw hole provided through the reinforcing boss part that fits into the opening of the shoulder and a reinforcing overhang part that protrudes from the bottom of the shoulder on the rail side to the rail side and supports the reinforcing boss part. For example, any specific form may be used, and when a resin coating is applied to the surface, the insulating property is high and it is possible to take measures against electrolytic corrosion.

  The embedded plug used in the rail-type fastening device with a screw-type shoulder according to the present invention has an opening that has an inner diameter that is freely fitable with the shoulder reinforcing boss portion, and is uneven without interfering with the shoulder reinforcing boss portion. Any material can be used as long as it fits, for example, a molded one having an inner diameter of the opening larger than the outer diameter of the shoulder reinforcing boss, or an existing plug opening. There is no problem even if it is concentrically cut with a tool such as a drill so as to be larger than the outer diameter of the shoulder reinforcing boss.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
Here, FIG. 1 is a front view showing, in section, a part of a rail fastening device with a screw-type shoulder according to an embodiment of the present invention, and FIG. 2 is a diagram of the rail fastening device with a screw-type shoulder shown in FIG. FIG. 3 is an exploded view of the rail fastening device with a screw-type shoulder shown in FIG. 1, and FIG. 4 is a perspective view of the shoulder used in this embodiment as viewed from above. FIG. 6 is a perspective view of the shoulder used in this embodiment as viewed from below, FIG. 6 is a perspective view of the fastening bolt used in this embodiment, and FIG. 7 shows the shoulder, the fastening bolt, and the embedded plug. FIG. 8 is a perspective view of the rail pad used in this embodiment, and FIG. 9 is a perspective view of the insulator used in this embodiment. FIG. 10 is a perspective view of the receptacle used in the present embodiment.

  As shown in FIGS. 1 to 3, a rail fastening device 100 with a screw-type shoulder according to an embodiment of the present invention fastens a rail R to a support S made of concrete sleeper, and includes a rail head. A wire spring clip 110 that elastically presses a rail R having a weight of 60 kg per 1 m in length, which has an inverted T-shaped rail section having a rail bottom portion R2 that is wide and flat with respect to R1, toward the support body S; The shoulder 120 having a clip mounting hole 121 for inserting and supporting one end portion 111 of the wire spring clip 110 in the longitudinal direction of the rail and the other end portion 113 of the wire spring clip 110 are in contact with the rail of the rail R. An insulator 130 that presses the bottom R2 toward the support S, an embedded plug 140 that is embedded in the support S and opens toward the shoulder 120, Fastening bolts 150 for fixing the shoulder 120 to the support S by screwing into the bolt screw holes 122 screwed in the vertical direction of the slider 120 and the bolt screw holes 141 screwed into the embedded plug 140, and the support body A rubber rail pad 160 that is laid on S and abuts against the bottom surface of rail R to absorb vibration of rail R, and is embedded in an exposed state on support S to support rail pad 160 and to shoulder It is comprised by the receptacle 170 which carries out uneven | corrugated engagement with the back surface side of 120, and is supported.

  Accordingly, as shown in FIGS. 1 and 2, the rail R is placed on a support S made of concrete sleeper, and a pair of screw-type shoulder-equipped rail fastening devices 100, 100 according to an embodiment of the present invention. It can be firmly fastened to the support S via the rail pad 160.

  Here, the wire spring clip 110 used in the rail-type fastening device 100 with a threaded shoulder according to the present embodiment is formed by winding a linear spring member and is attached to the shoulder 120 as shown in FIGS. The straight attachment portion 111 that is one end portion of the straight portion, the straight shoulder contact portion 112 that is a contact portion for contacting the upper surface of the shoulder 120, and the rail bottom portion R1 are pressed toward the support S. The mounting portion 111, the shoulder contact portion 112, and the pressing portion 113 are connected via the curved portions 114 and 115 so as to be parallel to each other. ing.

Next, the shoulder 120 and the fastening bolt 150, which are the most characteristic features of the rail fastening device 100 with a threaded shoulder according to the present embodiment, will be described in more detail.
First, as shown in FIGS. 3 to 5, the shoulder 120 has a front portion 123 that abuts the front surface 123 a on the side surface of the rail bottom portion R <b> 2 or the insulator 130 disposed on the rail bottom portion R <b> 2, and the rear end surface 124 a on the receptacle 170. The clip mounting hole 121 described above is provided in the side surface 123b of the front portion 123 so as to be parallel to the rail R in the rail longitudinal direction, and has an arcuate front upper surface. 123c is provided with the aforementioned bolt screw hole 122 penetrating downward.

Then, as shown in FIG. 5, the bolt screw hole 122 protrudes downward from the rail-side bottom portion 123 d (that is, the front bottom surface) of the shoulder 120 and is reinforced so as to be unevenly fitted into the opening 142 of the embedded plug 140. The reinforcing boss part 125 and the reinforcing protruding part 126 that supports the reinforcing boss part 125 by protruding from the rail-side bottom part 123d of the shoulder 120 to the rail side are provided in a state that penetrates at a stretch.
As a result, the threaded region of the shoulder 120 with respect to the fastening bolt 150 becomes longer by the amount provided by protruding the reinforcing boss portion 125 on the shoulder 120, and the rail side bottom portion 123 d surrounding the bolt screw hole 122 of the shoulder 120 is provided. The rail-side bottom portion 123d is reinforced by the amount of the protruding protruding portion 126 for the shoulder 120.

As shown in FIG. 4, the bolt screw hole 122 has an upper portion as a tool insertion portion (hexagon hole spanner) and a female screw portion 122 a to which the fastening bolt 150 is attached at the lower portion.
Further, the rear portion 124 is inclined downward, and the rear end surface 124a has an arc shape, and the upper surface is connected to the middle of the rear side of the front upper surface 123c. Further, a flat surface 124 b with which the shoulder contact portion 112 of the wire spring clip 110 abuts is provided on the upper front side of the rear portion 124.

  As shown in FIG. 5, a pair of ridges 127 and 127 are formed on the left and right sides of the rail-side bottom portion 123d disposed on the front portion 123 of the shoulder 120, and are spaced from the rear ends of these ridges 127 and 127. The lower inclined surface 124c provided on the rear portion 124 is connected to the front bottom surface 123d which is the rail side bottom, and the lower inclined surface 124c is connected to the arcuate rear end surface 124a.

In addition, a wide protrusion 128 is formed between the protrusions 127 and 127 to lengthen the female thread portion 122a of the bolt screw hole 122, and the bolt screw hole 122 described above is formed at the center of the protrusion 128. It is open.
Therefore, when the shoulder 120 is fixed, the space between the protrusion 127 and the inclined surface 124a of the rear portion 124 is located above the flat surface 171 of the receptacle 170 and opens to the outside, and therefore communicates with this space. The space between the protrusion 127 and the protrusion 128 can ensure excellent air permeability.
As a result, even if moisture stays in this space or the like, the amount thereof is small and easily evaporated, so that the corrosion of the shoulder 120 and the fastening bolt 150 can be suppressed.

Further, as shown in FIG. 7, the opening 142 of the embedded plug 140 has an inner diameter that can be freely fitted to the reinforcing boss 125 of the shoulder 120. That is, the inner diameter of the opening 142 of the embedded plug 140 is larger than the outer diameter of the reinforcing boss 125 of the shoulder 120.
As a result, the opening 142 of the embedded plug 140 is concavo-convexly fitted without interfering with the reinforcing boss 125 of the shoulder 120, so that the fastening bolt 150 and the shoulder 120 are not changed without changing the embedded level of the embedded plug 140. A sufficient screwing area is created, and the shoulder 120 is positioned with respect to the embedded plug 140.

On the other hand, as shown in FIG. 6, the fastening bolt 150 is a double screw bolt, and an upper portion is provided with a shoulder male screw portion 150 a screwed with the shoulder 120, and a shoulder 120 is embedded in the lower portion. A male screw portion 150 b for an embedded plug that is fixed to 140 is provided.
Further, a hexagonal hole 150c into which a hexagonal hole spanner (attachment tool) is fitted is provided on the upper end surface so that the fastening bolt 150 is rotated to attach the shoulder 120 to the embedded plug 140.

The shoulder male screw portion 150 a of the fastening bolt 150 is longer than the total length of the female screw portion 122 a formed in the bolt screw hole 122 of the shoulder 120.
As a result, as shown in FIG. 7, even if the screwing amount of the fastening bolt 150 to the embedded plug 140 is adjusted when the fastening bolt 150 is attached to the embedded plug 140, the male thread portion 150 a for the shoulder of the fastening bolt 150 is Since the entire region of the female thread portion formed on the shoulder 120 is screwed, the sufficient screwing strength between the fastening bolt 150 and the shoulder 120 can be exerted to prevent the shoulder 120 from coming out of the fastening bolt 150.

In addition, the shoulder male screw portion 150 a of the fastening bolt 150 is formed to have a smaller diameter than the male screw portion 150 b for the embedded plug of the fastening bolt 150.
As a result, as shown in FIG. 7, the reinforcing boss portion 125 of the shoulder 120 can be formed relatively thick as much as the diameter of the male screw portion 150a for the shoulder of the fastening bolt 150 is reduced. The strength of the reinforcing boss portion 125 formed on 120 can be increased.
The male screw portion 150b for the embedded plug of the fastening bolt 150 described above is screwed into a female screw portion 141a provided on the inner surface of the embedded plug 140 as shown in FIG.

  Reference numeral 160 shown in FIG. 8 is a rubber rail pad that is laid on the support S and is brought into contact with the bottom surface of the rail R to absorb the vibration of the rail R, as described above. In order to avoid the contact interference between the pad 160 and the reinforcing overhanging portion 126 of the shoulder 120 and to guide the water remaining in the rail side bottom 123d of the shoulder 120 to the space between the protrusion 127 and the protrusion 128 described above. It is a notch provided in the rail pad 160.

  As described above, the insulator 130 used in this embodiment shown in FIG. 9 abuts against the other end portion 113 of the wire spring clip 110 and presses the rail bottom portion R2 of the rail R toward the support body S. And an insertion locking portion 132 that is bent downward from the rail pressing portion 131 and is inserted and locked between the side surface of the rail bottom portion R2 and the front surface 123a of the shoulder 120. Molded with highly insulating resin that can be used for countermeasures.

  Further, the stopper 170 used in the present embodiment shown in FIG. 10 is embedded in the exposed state on the support S so as to support the rail pad 160 and to support it by engaging with the back side of the shoulder 120. And includes a flat portion 171 on which the front portion 123 of the shoulder 120 is placed and a curved portion 172 that accommodates the rear portion 124a of the shoulder 120 and abuts the rear end surface 124a thereof. An opening 171a to be inserted is provided, and the embedded plug 140 is connected to the bottom surface of the receiving plug 170 so as to surround the opening 171a.

Therefore, when the rail type fastening device 100 with a threaded shoulder according to the present embodiment is exchanged and laid on the rail R having a wide bottom width, specifically, when the 50 kg rail is exchanged and laid on the 60 kg rail R, as shown in FIG. Then, the shoulder male screw portion 150a of the fastening bolt 150 is screwed into the female screw portion 122a provided in the bolt screw hole 122 of the shoulder 120 from the rail side bottom portion of the shoulder 120, and the male screw portion 150b for the embedded plug of the fastening bolt 150 is buried. After screwing into the female thread 140a of the plug 140, a hexagon socket wrench (not shown) is inserted into the bolt screw hole 122 of the shoulder 120 from above, and is fitted into the hexagon hole 150c of the fastening bolt 150. The shoulder male screw portion 150a of the fastening bolt 150 is fastened to the female screw portion 122a of the shoulder 120. At the same time as the male screw portion 150 b for the embedded plug of the bolt 150 is screwed to the female screw portion 140 a of the embedded plug 140, the protrusion 127 of the front portion 123 of the shoulder 120 abuts against the flat portion 171 of the receiving plug 140, and the rear portion 124. Is accommodated in the curved portion 172 of the receptacle 140, and the arcuate rear end surface 124 a abuts against the inner surface 172 a of the curved portion 172 and is attached to the support body S.
Next, when the attachment portion 111 of the spring clip 110 is inserted into the clip attachment hole 121 of the shoulder 120, the shoulder contact portion 112 contacts the flat surface 124b of the rear portion 124, and presses the shoulder 120 in the direction of the support S, The pressing portion 113 is positioned on the upper surface of the rail bottom portion R2, and the rail bottom portion R2 is pressed toward the support body S via the insulator 160 disposed on the rail bottom portion R2 of the rail R. As shown in FIGS. The fastening operation between the rail R and the support S is completed.

  As described above in detail, in the rail fastening device 100 with the screw type shoulder according to the present invention, the bolt screw hole 122 of the shoulder 120 protrudes downward from the rail side bottom of the shoulder 120 and the opening 142 of the embedded plug 140. The reinforcing boss portion 125 that fits unevenly and the reinforcing boss portion 126 that protrudes from the rail side bottom portion of the shoulder 120 to the rail side and supports the reinforcing boss portion 125 are provided so as to be wide. In the case of replacement laying on the rail R having the bottom width, specifically, when replacing the 50 kg rail with the 60 kg rail R, even if the arrangement interval between the rail bottom R2 and the embedding plug 140 becomes narrower, The rail R having a wide bottom width can be easily installed without changing the embedding interval, and the screwing strength between the shoulder 120 and the fastening bolt 150 can be sufficiently secured. Can.

  The opening 142 of the embedded plug 140 has an inner diameter that can be freely fitted to the reinforcing boss 125 of the shoulder 120, so that the fastening bolt 150 can be connected to the embedded plug 140 without changing the embedded level of the embedded plug 140. In addition to creating a sufficient screwing area with the shoulder 120, the shoulder 120 can be positioned and installed with respect to the embedded plug 140.

DESCRIPTION OF SYMBOLS 100, ... Rail fastening device 110 with a screw type shoulder, 510 ... Wire spring clip 111, 511 ... Attachment part 112 which is one end part ... Shoulder contact part 113, 513 ... The other end The holding part 114 as a part ... the bending part 115 ... the bending part 120, 520 ... the shoulder 121, 521 ... the clip mounting hole 122 ... the bolt screw hole 122a, 522a ... the female screw part 123 523 ... Front 123a, 523a ... Front 123b, 523b ... Side 123c, 523c ... Front top 123d ... Rail side bottom (ie, front bottom)
124, 524 ... rear part 124 a ... rear end face 124 b ... flat surface 124 c ... lower inclined surface 125 ... reinforcing boss part 126 ... reinforcing overhang part 127 ... ridge 128 .. Projections 130, 530... Insulator 131... Rail pressing part 132, 532... Insertion locking part 140, 540. .... Female thread part 142 ... Opening part 150, 550 ... Fastening bolt 150a ... Male thread part for shoulder
150b ... Male thread part 150c for embedded plug ... Hexagonal hole 160 ... Rail pad 161 ... Notch 170, 570 ... Receptacle 171 ... Flat part 171a ... Opening 172 ..Bending part 172a ... Inner surface of bending part R ... Rail R1 ... Rail head R2 ... Rail bottom S ... Bridge made of concrete sleeper

Claims (4)

A wire spring clip that elastically presses the rail toward a support body such as a concrete sleeper, and a shoulder provided with a clip mounting hole that supports one end portion of the wire spring clip that is inserted in the longitudinal direction of the rail; An insulator that abuts against the other end portion of the wire spring clip and presses the rail bottom of the rail toward the support body, an embedded plug that is embedded in the support body and opens toward the shoulder, and upper and lower sides of the shoulder Rail fastening device with a screw-type shoulder comprising at least a bolt screwing hole screwed in a direction and a fastening bolt screwed into a bolt screwing hole screwed into the embedded plug to fix the shoulder to the support body In
The shoulder bolt screw hole protrudes downward from the rail-side bottom of the shoulder and protrudes downward from the rail-side bottom of the shoulder to the rail side for reinforcement, and for reinforcement A rail fastening device with a screw-type shoulder, which is provided so as to penetrate a reinforcing overhanging portion that supports a boss portion.   The rail fastening device with a screw-type shoulder according to claim 1, wherein the opening of the embedded plug has an inner diameter that can be freely fitted with the reinforcing boss of the shoulder.   The rail fastening device with a screw-type shoulder according to claim 1 or 2, wherein a male screw portion for a shoulder of the fastening bolt is longer than a total length of a female screw portion formed in a bolt screw hole of the shoulder. .   The rail with a screw-type shoulder according to any one of claims 1 to 3, wherein a male screw portion for a shoulder of the fastening bolt is formed to have a smaller diameter than a male screw portion for an embedded plug of the fastening bolt. Fastening device.