JP5156219B2 - Rail fastening device for high and low displacement adjustment - Google Patents

Description

  The present invention relates to a rail fastening device for fastening a rail to a support such as a track slab or a concrete sleeper, and in particular, a height for fastening a rail laid with a pad and adjusted in height so as to adjust a height displacement. The present invention relates to a rail fastening device for displacement adjustment.

Conventionally, in a railway track using a support such as a track slab or a concrete sleeper, a fastening device using a spring clip and a fastening bolt for attaching the spring clip to the support is used as a rail fastening device. .
This spring clip has a double upper and lower structure by bending the middle part of the leaf spring in an arc shape, and the upper part is a flat part so that it can be attached to the support with a fastening bolt, and its upper surface is a fastening bolt when fastened. It is made to be orthogonal to the axis line, i.e., to be horizontal.
Then, the middle portion of the spring clip is brought into contact with the arcuate clip receiving surface of the wedge-shaped clip receiving base provided on the support, and the upper end portion or the upper end portion and the lower end portion of the spring clip are placed on the upper surface of the bottom portion of the rail. In addition, the rail is fastened to the support by engaging with the side surface and fastening the fastening bolt (see, for example, Patent Document 1).
Utility Model Registration No. 2511764

However, due to changes in the roadbed due to an earthquake or the like, the support body such as the track slab also shifts in the vertical and horizontal directions, causing large height displacement and street displacement, making it difficult to operate the train.
For this reason, it is necessary to adjust such a displacement. Even though the displacement can be adjusted by changing the position of the wedge-shaped clip cradle, in order to adjust the height displacement, a support such as a track slab is required. Since such a restoration work is a large construction, it takes a long time and it is difficult to restart the operation at an early stage. Therefore, leave the support such as the track slab as it is to accelerate the restoration. It is also possible to adjust the height of the rail by laying a height adjusting pad for adjusting the vertical displacement under the rail.
However, in the fastening device using the conventional spring clip described above, since the upper surface of the spring clip is horizontal when fastened so that the fastening device can be attached to the support with fastening bolts, the rail height is If it changes, there exists a problem that the upper surface of a spring clip becomes the arrangement | positioning inclined and cannot be used.

  Therefore, the present invention solves the problems of the prior art as described above, that is, the object of the present invention is to adjust a large height displacement based on a roadbed change due to an earthquake or the like with a height adjustment pad. Even if the clip that engages the bottom of the rail is greatly inclined and the upper surface of the variable washer is displaced so that the upper surface of the variable washer is horizontal on the washer receiving portion of the clip, the reduction of the contact area of the clip with the washer receiving portion is suppressed. It is an object of the present invention to provide a rail fastening device for adjusting a high and low displacement that securely fastens a rail by applying a pressing force of a coil spring in parallel with an axis of a fastening bolt regardless of a mounting angle of a clip.

  The present invention comprises a clip comprising a block body provided with a stepped portion that engages with the rail bottom at one end and an arcuate surface that abuts the clip rest at the other end, a variable washer disposed on the upper surface of the clip, Fastening means comprising a fastening bolt that is screwed into a female screw hole provided in a support body such as a track slab and through which the clip and the variable washer are inserted, and a fastening nut that is screwed to the tip of the fastening bolt, and the variable washer and the fastening nut A cover plate, an insulating collar, a first round washer, a coil spring, and a second round washer, which are arranged in sequence with each other, and a coil by tightening a fastening nut screwed to the tip of the fastening bolt A rail fastening device for height and low displacement adjustment that presses and fastens a rail bottom through a variable washer and a clip with a pressing force of a spring, from the block body The clip has an arc-shaped washer receiving portion on the upper surface and a long hole through which the fastening bolt is inserted into the washer receiving portion, and the variable washer disposed on the upper surface of the clip has a flat upper surface and the clip. By providing an arc-shaped bottom surface that is formed longer than the washer receiving portion and matches the washer receiving portion of the clip, and a long hole that is formed longer than the long hole of the clip and allows the fastening bolt to pass therethrough. It solves the problem.

According to the present invention, a clip made of a block body includes an arc washer receiving portion on the upper surface and a long hole through which a fastening bolt is inserted into the washer receiving portion, and a variable washer disposed on the upper surface of the clip, A flat top surface, an arc-shaped bottom surface that is longer than the washer receiving portion of the clip and matches the washer receiving portion of the clip, and a long hole that is longer than the long hole of the clip and through which the fastening bolt is inserted. Therefore, the variable washer can be displaced along the arc surface so that the upper surface is always parallel to the track slab, that is, the direction perpendicular to the axis of the fastening bolt, regardless of the mounting angle of the clip. Even if the height displacement is adjusted by laying the pad, and even if the adjustment height is changed by using a height adjustment pad having a different thickness, the rail can be securely fastened.
In addition, since the abutting surface of the clip facing the clip receiving table is an arc surface corresponding to the clip receiving surface of the clip receiving table, it can abut on the entire surface of the clip receiving surface even if the mounting angle of the clip changes. Therefore, the lateral pressure from the rail applied via the clip can be reliably received.
Furthermore, the pressing force of the coil spring by tightening the fastening nut moves the variable washer so that the upper surface is horizontal by sliding the washer receiving portion of the clip, so there is no need to precisely place the variable washer on the clip. Excellent workability.
And even if the upper surface of the variable washer is displaced so as to be horizontal on the washer receiving part of the clip by making the arc-shaped bottom surface formed on the variable washer longer than the washer receiving part of the clip, the washer receiving part Since the reduction of the contact area with respect to is suppressed, reliable rail fastening can be achieved.
Then, by making the long hole of the variable washer longer than the long hole of the clip, the rail can be fastened even if the clip is attached with a large inclination, so that versatility can be improved.

  The present invention comprises a clip comprising a block body provided with a stepped portion that engages with the rail bottom at one end and an arcuate surface that abuts against the clip rest at the other end, a variable washer disposed on the upper surface of the clip, A fastening means comprising a fastening bolt that is screwed into a female screw hole provided in a support body such as a track slab and through which a clip and a variable washer are inserted; and a fastening nut that is screwed to the tip of the fastening bolt; and a variable washer and a fastening nut A cover plate, an insulating collar, a first round washer, a coil spring, and a second round washer that are arranged in order with each other interposed therebetween. The coil spring is pressed by tightening a fastening nut screwed to the tip of the fastening bolt. A rail fastening device for adjusting the displacement by pressing the bottom of the rail through a variable washer and a clip with pressure, and comprising a block body The upper surface has an arc-shaped washer receiving portion and a long hole through which the fastening bolt is inserted into the washer receiving portion, and the variable washer disposed on the upper surface of the clip is longer than the flat upper surface and the washer receiving portion of the clip. It is formed with an arc-shaped bottom that matches the washer receiving part of the clip and a long hole that is formed longer than the long hole of the clip and allows the fastening bolt to pass through. When adjusting the displacement with the height adjustment pad, even if the clip that engages the rail bottom is greatly inclined and the top surface of the variable washer is displaced so that it is horizontal on the washer receiving portion of the clip, the clip washer receiving The rail is securely fastened by suppressing the reduction of the contact area to the part and applying the pressing force of the coil spring parallel to the axis of the fastening bolt regardless of the mounting angle of the clip. As long as its specific embodiments may be any one.

  That is, the arc-shaped washer receiving portion provided on the clip and the arc-shaped bottom surface of the variable washer displace the variable washer in a direction perpendicular to the rail regardless of the mounting angle of the clip when the rail is fastened, and the upper surface is the upper track. The size and the radius of curvature may be any as long as they can be parallel to a support such as a slab, that is, in a direction perpendicular to the axis of the fastening bolt.

  In addition, when the variable washer is arranged on the clip, the long hole provided in the clip and the variable washer does not obstruct the insertion of the fastening bolt when the rail is fastened and the rail is fastened. Any shape such as a rectangle may be used.

Hereinafter, the present invention will be described based on embodiments of the drawings.
Here, FIG. 1 is a perspective view of a railroad track on which a rail is mounted by a rail fastening device for height displacement adjustment according to one embodiment of the present invention, and FIG. 2 is a cross-sectional view of one rail fastening device for height displacement adjustment. FIG. 3 is a front view of the railway track shown in FIG. 1, FIG. 3 is an assembly diagram showing a part of a rail fastening device for adjusting the height displacement of the present embodiment, and FIG. 4 is a height diagram of the present embodiment. FIG. 5 is an assembly diagram showing the rest of the displacement adjusting rail fastening device, FIG. 5 is an operation explanatory diagram of the height and low displacement adjusting rail fastening device of the present invention using a thick height adjusting pad, and FIG. It is operation | movement explanatory drawing of the rail fastening apparatus for height displacement adjustment of this invention using the thin pad for height adjustment.

As shown in FIG. 1, the railroad track has a height adjustment pad BP for adjusting the height displacement laid on the track slab S, and the rail R is placed on the height adjustment pad BP via the rail pad RP. Is mounted and the rail fastening device 100 for adjusting the high / low displacement of the present invention is provided so that the rail R is fastened to the track slab S.
The height adjustment pad BP is used by appropriately changing the thickness according to the adjustment amount (adjustment height) of the height displacement.

As shown in FIG. 2, the rail fastening device 100 for adjusting the high / low displacement of the present invention includes a clip 110 and a variable washer 120 disposed on the upper surface of the clip 110, and is provided with a female screw provided on the track slab S. The clip 110 and the variable washer 120 are inserted through a fastening bolt 190 screwed into a hole (not shown), and are arranged so as to press the bottom of the rail R.
A cover plate 130, an insulating collar 140, a first round washer 150, a coil spring 160, and a second round washer 170 are arranged in this order on the upper surface of the variable washer 120, and are fastened by screwing to the tip of the fastening bolt 190. The rail R is fastened by the pressing force of the coil spring 160 by tightening the nut 180.

As shown in FIGS. 2 and 3, the clip 110 is a block body, has a stepped portion 111 that engages with the bottom upper surface R <b> 1 and the side surface R <b> 2 of the rail R at one end, and is disposed in the track slab S. An arc surface 112 that abuts the arcuate clip receiving surface 201 of the clip receiving base 200 is provided at the other end.
Furthermore, the upper surface of the clip 110 made of a block body is provided with an arc-shaped washer receiving portion 113 and a long hole 114 through which the fastening bolt 190 is inserted into the washer receiving portion 113.
The long hole 114 of the clip 110 is made long so that the fastening bolt 190 does not hit and cannot be fastened even if the inclination angle and arrangement of the clip 110 are different.
In the clip 110 of this embodiment, the lengths of the left and right clips are changed so that the displacement can be adjusted. In FIG. 2, the length of the left clip 110 is shorter than that of the right clip 110. Yes.

On the other hand, the variable washer 120 disposed on the upper surface of the clip 110 includes a flat upper surface 121 and an arc-shaped bottom surface 122 that matches the washer receiving portion 113 of the clip 110, and the bottom surface 122 is provided on the clip 110. It is formed longer than the washer receiving portion 113.
A long hole 123 longer than the long hole 114 of the clip 110 is formed at the center of the variable washer 120.
As described above, when the bottom surface 122 of the variable washer 120 is formed longer than the washer receiving portion 113 provided in the clip 110 and the long hole 123 of the variable washer 120 is longer than the long hole 114 of the clip 110, the inclination angle of the clip 110. Even if the upper surface of the variable washer 120 is greatly displaced so that the upper surface of the variable washer 120 becomes horizontal, the reduction of the contact area with the washer receiving portion 113 is suppressed, so that the fastening bolt 190 hits the elongated hole 123 of the variable washer 120. Instead, the bottom surface 122 of the variable washer 120 contacts the entire washer receiving portion 113 of the clip 110.
In addition, by making the long hole 123 of the variable washer 120 longer than the long hole 114 of the clip 110, the rail R can be fastened even if the clip 110 is attached with a large inclination.

An insulating collar 140 is disposed on the upper surface of the variable washer 120 via a cover plate 130 having a rectangular opening 131. The insulating collar 140 includes a polygonal flange 141 and a rectangular tube 142 suspended from the center. It is composed of
The rectangular tube 142 is inserted into the rectangular opening 131 of the cover plate 130 and the long hole 123 of the variable washer 120 and extends into the long hole 114 of the clip 110 to insulate between the rail R and the fastening bolt 190. Sure.

Further, as shown in FIGS. 2 and 4, a coil spring 160 is disposed on the upper surface of the insulating collar 140 via a first round washer 150 so as to absorb vibration from the rail R.
Therefore, the coil spring 160 ensures stability by forming the upper surface 161 and the lower surface 162 flat.

  Then, a fastening nut 180 is screwed onto the fastening bolt 190 via the second round washer 170 on the upper surface of the coil spring 160, and a clip is applied via a member such as the coil spring 160 that generates a pressing force when the fastening nut 180 is tightened. 110 presses the rail R and fastens it.

Next, the fastening operation of the present embodiment will be described with reference to FIGS.
Here, FIG. 5 is obtained by adjusting a large height displacement with a thick height adjustment pad, and FIG. 6 is obtained by adjusting a small height displacement with a thin height adjustment pad.
As shown in FIGS. 5 and 6, in FIG. 5 using the thick height adjustment pad BP, the horizontal axis L2 of the clip 110 and the axis L1 of the fastening bolt 190 are adjusted according to the adjusted height of the rail R. As shown in FIG. 6, when the rail height is different such that the inclination angle θ1 is an acute angle and the inclination angle θ2 is an obtuse angle in FIG. 6, the clip mounting angle is different, but the clip 110 of the present invention has an arc washer on the upper surface. Since the variable washer 120 has an arc-shaped bottom surface 122 that matches the washer receiving portion 113, the upper surface 121 (L3) of the variable washer 120 is related to the inclination angles θ1 and θ2. Instead, the fastening bolt 190 is always displaced so that the angle with respect to the axis L2 is 90 °.
For this reason, the rail R can be fastened regardless of the mounting angle of the clip 110, and the pressing force of the coil spring 160 via the clip 110 acts in parallel with the axis L1 of the fastening bolt 190, thereby achieving reliable fastening. be able to.

In this embodiment, the track slab S is used as the support. However, even when another support such as a so-called concrete direct-connection track, in which short sleepers, long sleepers, etc. are hardened with concrete, is changed. It can be applied in the same way when it comes in shape.
A cover plate 130, an insulating collar 140, a first round washer 150, a coil spring 160, and a second round washer 170 are interposed between the variable washer 120 and the fastening nut 180. The whole can be omitted or changed to another member, and can be selected as appropriate according to the state of rail attachment.

  As described above in detail, in the rail fastening device 100 for adjusting height displacement according to the present embodiment, the clip 110 made of a block body has an arc-shaped washer receiving portion 113 on the upper surface and the fastening bolt 190 is inserted into the washer receiving portion 113. The variable washer 120 disposed on the upper surface of the clip 110 is formed longer than the flat upper surface and the washer receiving portion 113 of the clip 110 so as to match the washer receiving portion 113 of the clip 110. By providing the arc-shaped bottom surface 122 and the long hole 123 that is formed longer than the long hole 114 of the clip 110 and allows the fastening bolt 190 to be inserted, the height adjustment can be performed for a large height displacement based on orbital fluctuation due to an earthquake or the like. The rail can be securely fastened even if it is adjusted with the pad for adjustment, and the adjustment height changes. In addition, even if the inclination angle of the clip 110 is increased and the upper surface of the variable washer 120 is displaced so as to be horizontal, the reduction of the contact area with the washer receiving portion 113 is suppressed. Since the bottom surface 122 of the variable washer 120 abuts the entire region of the washer receiving portion 113 of the clip 110 without hitting the long hole 123 of the variable washer 120, the fastening of the rail R is ensured, and the long hole 123 of the variable washer 120 is clipped. By making it longer than the long hole 114 of 110, the rail R can be fastened by causing the pressing force of the coil spring 160 to act in parallel with the axis of the fastening bolt 190 even when the clip 110 is attached with a large inclination. Therefore, there are significant effects such as the ability to improve versatility.

The perspective view of the railroad track using the rail fastening device for height difference adjustment which concerns on one Example of this invention. The front view of the railroad track of FIG. 1 which showed the rail fastening apparatus for one high / low displacement adjustment with sectional drawing. The assembly figure which showed a part of the rail fastening apparatus for height displacement adjustment of a present Example. The assembly figure which showed the other part of the rail fastening apparatus for height difference adjustment of a present Example. Operation | movement explanatory drawing of the rail fastening apparatus for height displacement adjustment of this invention using the thick pad for height adjustment. Operation | movement explanatory drawing of the rail fastening apparatus for height displacement adjustment of this invention using the thin pad for height adjustment.

DESCRIPTION OF SYMBOLS 100 ... Rail fastening device 110 for height adjustment adjustment ... Clip 111 ... Step part 112 ... Arc surface 113 of an edge part ... Arc washer receiving part 114 ... Long hole 120 ... Variable washer 121 ... upper surface 122 ... arc-shaped bottom face 123 ... long hole 130 ... cover plate 131 ... opening 140 ... insulating collar 141 ... flange 142 ... square tube 150 First round washer 160 Coil spring 161 Upper surface 162 Lower surface 170 Second round washer 180 Fastening nut 190 Fastening bolt 200 Wedge shape Clip receiving base 201 ... Arc-shaped receiving surface R ... Rail R1 ... Rail bottom upper surface R2 ... Rail bottom side S S ... Track slab BP ... Height adjustment pad De RP ··· rail pad

Claims (1)

A clip comprising a block body provided with a stepped portion that engages with the rail bottom at one end and an arcuate surface that abuts the clip rest at the other end, a variable washer disposed on the top surface of the clip, a track slab, etc. A fastening means comprising a fastening bolt that is screwed into a female screw hole provided in the support and through which the clip and the variable washer are inserted, and a fastening nut that is screwed to the tip of the fastening bolt; and between the variable washer and the fastening nut A cover plate, an insulating collar, a first round washer, a coil spring, and a second round washer that are arranged in order with each other interposed therebetween, and a pressing force of the coil spring by tightening a fastening nut screwed to the tip of the fastening bolt A rail fastening device for high and low displacement adjustment that presses and fastens the rail bottom via a variable washer and a clip,
The clip made of the block body includes an arc-shaped washer receiving portion on the upper surface and a long hole through which a fastening bolt is inserted into the washer receiving portion.
The variable washer disposed on the upper surface of the clip is formed longer than the flat upper surface, the arc-shaped bottom surface that matches the washer receiving portion of the clip, and the elongated hole of the clip. And a rail fastening device for adjusting a high and low displacement, characterized in that it comprises a long hole through which a fastening bolt is inserted.

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