JP3058592B2 - Rail fastening device with height adjustment function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention particularly relates to a rail fastening device with a height adjusting function used for fixing a rail for railroad to a sleeper so as to be adjustable in height.

[0002]

2. Description of the Related Art Conventionally, various types of rail fastening devices with a height adjusting function used for fastening railroad rails to sleepers, concrete slabs, etc. (hereinafter referred to as "sleepers, etc.") have been developed and provided. I have. Among them, a typical one is schematically constituted by an insulating block 2, a spring clip 3, and a fixing bolt 4, as shown in FIG.

The insulating block 2 is formed with a hook 2a reaching the upper surface of the sleeper T and the like, and a holding portion 2b extending above the edge Rs of the bottom Rb of the rail R. An insertion portion 2c that can be inserted into a gap between the side wall Tw of the groove portion Tc formed at the bottom and the edge portion Rs of the bottom portion Rb of the rail R is formed. A hole 2d is provided.

[0004] The spring clip 3 is located on the upper surface of the insulating block 2 and presses the rail R to the sleeper T or the like via the insulating block 2 in a fastened state. A bolt hole 3a is provided substantially at the center in plan view.

The fixing bolt 4 can be screwed into a fixing hole Tf provided in a sleeper T or the like. The fixing bolt 4 is inserted through the through hole 2d of the insulating block 2 and the bolt hole 3a of the spring clip 3, and The spring clip 3 is fastened to the sleeper T or the like.

In the rail fastening device 1 with such a height adjusting function, the insulating block 2 is configured such that the rail contact surface 2e is pressed against the edge Rs and the pressure receiving surface 2f presses against the side wall Tw, so that the rail R is formed. It is prevented from shifting in a direction perpendicular to the axial direction. Such a rail fastening device 1 with a height adjusting function is extremely frequently used as the simplest and cheapest device.

[0007]

By the way, the sleeper T and the like and the rail R fastened to the same are settled by the running of the railway vehicle and the like, so that it is necessary to raise the rail R. In the rail fastening device 1 with a height adjusting function, the fixing bolt 4 is loosened, and a rail height adjusting plate (not shown in FIG. 12) made of hard rubber is interposed between the track pad 6 and the sleeper T. The height adjustment plate (not shown in FIG. 12) for the insulating block, also made of hard rubber, is interposed between the hook portion 2a of the insulating block 2 and the pillow T or the like.

However, according to such a method, the rail R
Is raised, as shown by the dotted line in FIG.
Is increased, the pressure receiving area of the pressure receiving surface 2f of the insulating block 2 is reduced, and the insulating block 2 may come off the insulating block 2 from the sleeper T or the like.

It is also conceivable that the pressure-receiving area of the pressure-receiving surface 2f decreases, so that the stress increases and the insulating block 2 is damaged.

The present invention has been made under such considerations, and the object thereof is that even when the rail is raised, the insulating block is detached from the sleeper or the like, and the pressure receiving area of the pressure receiving surface is reduced. It is another object of the present invention to provide a rail fastening device with a height adjustment function that can prevent the insulation block from being damaged due to this.

[0011]

SUMMARY OF THE INVENTION The gist of the present invention is that a rail fastening device with a height adjusting function for adjusting the height of a rail, which is used for fixing the rail to a sleeper, a concrete slab, or the like. And the buried part to be buried in the pillow, concrete slab, etc., and the buried part, which protrudes from the upper surface of the pillow, concrete slab, etc. in the buried state, and comes into contact with the edge of the bottom of the rail, from the height of the edge. With a high pressure receiving surface, a locking portion that can lock the head of the fixing bolt, and a support portion that extends from the locking portion in the opposite direction to the rail and has an engaging portion formed at the tip. And the shoulder, which is located on the upper surface of the shoulder and presses the rail against a sleeper, a concrete slab, or the like in a fastened state. One end forms a fulcrum, and the other end forms an action portion that presses the rail. A vertical portion between the pressure receiving surface of the shoulder and the edge of the bottom of the rail, and a vertical portion between the lower surface of the action portion of the spring clip and the upper surface of the bottom portion. An insulating gauge plate having an approximately L-shaped cross-section made of an insulating material and having a horizontal portion interposed therebetween, a sleeper, and an engaging portion formed at a tip of a shoulder for supporting a fulcrum portion of a spring clip when fastened. And a spring receiving base having an engaged portion that can be engaged with the rail fastening device. Claim 2
The gist of the invention described in claim 1 is that the convex portion is provided on the outer surface of the vertical portion of the insulating gauge plate at intervals substantially equal to the length of the shoulder in the rail extending direction. The present invention resides in the rail fastening device with height adjustment function described in the above.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. A rail fastening device 10 with a height adjustment function according to the present embodiment shown in FIG. 1 includes a railroad rail (hereinafter, simply referred to as “rail”) R on a sleeper T.
The height of the rail R used to fix the rails can be adjusted. The pillow T is made of prestressed concrete and has a flat upper surface. In FIG. 1, one of the rail fastening devices 10 with a height adjusting function is provided.
Indicates an unfastened state.

The rail fastening device 10 with a height adjustment function includes a shoulder 20, a spring clip 30, and an insulating gauge plate 4.
0, a spring receiving base 50, and a fixing bolt 60. FIG. 1 shows a state in which one of the rail fastening devices with height adjustment function 10 is not fastened.

As shown in FIG. 2, the shoulder 20 is fixed to the sleeper T so as to face each other with the rail R interposed therebetween. A buried part 21 buried in the pillow T, and a buried part 2
1 is a steel member formed with a pressure receiving surface 22 and a hooking portion 23 protruding from the upper surface of the sleeper T in a state where it is buried, and a support portion 24 extending in a direction opposite to the rail R. Here, the "direction opposite to the rail R" refers to the center direction between the rails for the rail fastening device 10 with a height adjustment function inside the gauge, and the center between the gauges for the rail fastening device 10 with a height adjustment function outside the gauge. Outward direction from In addition, the "gauge" means between the rails R. The buried part 21 is shown in FIG.
And two legs 21a extending vertically downward when buried as shown in FIG. A hook 21b (not shown in FIG. 3) is formed at the end of each leg 21a to prevent the rail R from being pulled out by the side pressure. The buried portion 21 is buried by being inserted into a mold (not shown) at the time of manufacturing the sleeper T. The pressure receiving surface 22 is a vertical plane positioned on the rail R side as shown in FIG. 2 and is in contact with the edge Rs of the bottom Rb. The height is about twice as high as the edge Rs. As shown in FIG. 4, the hooking portion 23 has a groove shape whose upper surface is open. The width of the insertion portion 23 a into which the head 61 of the fixing bolt 60 is inserted is substantially equal to the width of the head 61. An overhang 23b is formed on the upper surface so that the head 61 can be hooked. The interval between the overhang portions 23b is smaller than the interval between the head portions 61 and slightly larger than the shaft portion 62 (or the screw portion) of the fixing bolt 60. Therefore, the shaft portion 62 can be inserted and the head portion 61 can be hung. As shown in FIG. 2, the support portion 24 includes two arm portions 24 a extending in a direction opposite to the rail R from the pressure receiving surface 22. The arms 24a extend in parallel and horizontally at equal intervals. The lower surface is in contact with the pillow T. At each end, an engaging portion 24b protruding upward
Are formed. In FIG. 2, reference numeral 70 denotes a track pad.

The spring clip 30 is, as shown in FIG.
In the fastened state, the rail R is pressed against the sleeper T via the insulating gauge plate 40. One end forms a fulcrum portion 31 and the other end forms an action portion 32 that presses the rail R. As shown in FIG. 1, the steel shell-like body is substantially trapezoidal in plan view and curved in a plane parallel to the rail R and in a plane orthogonal to the rail R as shown in FIG. Note that FIG. 2 shows a crushed state instead of a shell shape because of being fastened. The fulcrum 31 is curved so that the fulcrum 31 is convex downward. The action portion 32 contacts the upper surface of a horizontal portion 42 of the insulating gauge plate 40 described later, and urges the rail R so as to press down the rail R in a fastened state. A bolt hole 33 penetrating in the thickness direction is provided at substantially the center in plan view. The bolt hole 33 is a long hole that is long in the longitudinal direction (the direction perpendicular to the rail R in the fastened state).

As shown in FIG. 2, the insulating gauge plate 40 has a vertical portion 41 between the pressure receiving surface 22 of the shoulder 20 and the edge portion Rs of the rail R, and a lower surface of the action portion 32 of the spring clip 30 and an upper surface of the bottom portion. The cross-section substantially L where the horizontal portion 42 is interposed between
It is a bar-shaped member as shown in FIG. In a plan view, as shown in FIG. 1, the spring clip 30 has substantially the same shape as the action portion 32 of the spring clip 30. The material is nylon. The length of the vertical portion 41 of the insulating gauge plate 40 is longer than the width of the pressure receiving surface 22 of the shoulder 20. FIG.
As shown in the figure, the outer surface (the surface that is in contact with the pressure receiving surface 22)
Protrusions 43 are provided at intervals substantially equal to the width of the pressure receiving surface 22 (shown in FIG. 3) of the shoulder 20. In addition,
In FIG. 2, the vertical portions 41 of the left and right insulating gauge plates 40 have different thicknesses for adjusting the gauge.

The spring receiving base 50 is made of nylon for supporting the fulcrum 31 of the spring clip 30 as shown in FIG. As shown in FIGS. 6 and 7, a receiving groove 51 having a curvature radius substantially equal to that of the fulcrum 31 is formed on the upper surface so as to match the fulcrum 31 of the spring clip 30. The inside is a hollow member having an open lower surface. This hollow portion is the engaging portion 2 formed at the tip of the arm portion 24a of the shoulder 20.
4b (shown in FIGS. 2 and 4) to be engaged 52
(Shown in FIGS. 6 and 7).

The fixing bolt 60 has a T-shaped head 61 as shown in FIG. The head 61 is hooked on the hooking portion 23 of the shoulder 20, the bolt hole 33 of the spring clip 30 is inserted, and a nut is screwed on the upper surface of the spring clip 30. When the nut is fastened, the spring clip 30 is urged and presses the insulating gauge plate 40 against the rail R. As a result, the rail R is fixed to the sleeper T.

In order to assemble the rail fastening device 10 with the height adjustment function configured as described above, the track pad 70 is placed between the shoulders 20 of the sleeper T, and the rail R is placed on the track pad 70. Next, the spring support 5 is attached to the engaging portion 24b of the shoulder 20 in which the leg portion 21a is embedded in advance.
The spring cradle 50 is mounted on the tip of the arm 24a so that the zero engaged portion 52 is engaged. Next, the head 61 of the fixing bolt 60 is hooked on the hook 23 of the shoulder 20. The spring clip 30 is placed on the shoulder 20 so that the bolt hole 33 of the spring clip 30 is inserted into the fixing bolt 60 in such a state, and the fulcrum 31 is placed on the spring receiving base 50. Next, an insulating gauge plate 40 is interposed between the rail R and the spring clip 30 and the shoulder 20.
Finally, insert a washer and fasten with a nut.
By the above steps, the rail fastening device 10 with the height adjustment function can be assembled. FIG. 8 shows an assembly diagram of the rail fastening device 10 with a height adjustment function.

Such a rail fastening device 10 with a height adjusting function
Is used to raise the fastened rail R as follows. First, the fixing bolt 60 of the rail fastening device 10 with the height adjusting function in the state shown in FIG. 2 is loosened, and the rail height adjusting plate B1 made of hard rubber shown in FIG. To interpose. Next, the spring cradle 50 shown in FIGS. 2, 6, and 7 is replaced with another higher spring cradle 55 shown in FIG. Finally, the nut is tightened again. Through the above steps, the rail R can be raised as shown in FIG. By preparing a plurality of rail height adjusting plates having different thicknesses and a plurality of spring supports having different heights corresponding thereto, the height of the rail R can be gradually increased. it can.

Since the shoulder 20 is made of steel, it can receive the pressing force of the rail R if the insulating gauge plate 40 is slightly applied. Further, since the insulation gauge plate 40 is made of nylon, insulation between the rail R and the ground can be secured.

Since the rail fastening device 10 with a height adjusting function according to the present embodiment is configured as described above, the following effects can be obtained.

Even if the rail R is raised, it is not necessary to provide the groove Tc and the side wall Tw in the sleeper T as shown in FIG. 12 as in the prior art, and since the insulating block 2 is not required, the insulating block 2 comes off from the sleeper T. Never. Further, there is no possibility that the insulating block 2 is damaged.

Further, since the number of members is smaller than that of the prior art, it can be manufactured at very low cost.

Further, since it is not necessary to provide the side wall Tw on the sleeper T unlike the prior art, the manufacture of the sleeper T itself can be facilitated and the cost can be reduced. Construction of concrete slabs can also be made extremely easy and cheap.

In the prior art, when the rail R is raised vertically as shown in FIG. 13, the distance between the rail contact surface 2e of the insulating block 2 and the edge Rs does not change, but the pressure receiving surface 2f does not. The gap g with the side wall Tw is increased. When the rail R is raised along the side wall Tw, the side wall Tw
Is inclined, the distance between the pressure receiving surface 2f and the side wall Tw does not change (the distance is not empty), but the distance between the rail contact surface 2e and the edge Rs of the rail R increases. Therefore, in the prior art, when the rail R is raised, the distance between the rail contact surface 2e and the edge Rs, the pressure receiving surface 2f and the side wall Tw are increased.
Of the rail R becomes large, and as a result, the amount of movement of the rail R in the orthogonal direction becomes large. On the other hand, in the present embodiment, as shown in FIGS.
Since the pressure receiving surface 22 is vertical before and after raising the rail R, the rail R is not displaced in the orthogonal direction. As a result, the linearity of the rail R is improved, and the riding comfort is improved.

Since the insulating gauge plate 40 has the convex portion 43, it does not shift in the axial direction of the rail R.

Further, the engaging portion 24b is provided on the arm portion 24a of the shoulder 20, and the engaged portion 52 to be engaged with the engaging portion 24b is provided on the spring receiving base 50. It can be easily performed and can be prevented from coming off.

Further, since the support portion 24 is provided, it is possible to more completely prevent the shoulder 20 from overturning (pulling out of the sleeper) due to a moment caused by receiving the lateral pressure of the rail R.

Further, since the insulating gauge plate 40 has substantially the same shape as the action portion 32 of the spring clip 30 in a plan view, the urging force of the spring clip 30 can be received on the entire surface. As a result, breakage of the insulating gauge plate 40 can be prevented.

The head 61 of the fixing bolt 60 can be hooked on the hook 23 of the shoulder 20.
Very easy to assemble.

In this embodiment, the pillow T
However, the present invention is not limited thereto, and may be applied to a track suitable for applying the present invention, such as a concrete slab.

Further, the material of the insulating gauge plate 40 is nylon, but the present invention is not limited to nylon, and any material having a hardness capable of pressing down the rail R and an insulating property can be used. Good.

The spring clip 30 is not limited to a shell-like one, but may be a leaf spring-like one or any other suitable material for practicing the present invention.

Further, as in the rail fastening device 11 with a height adjusting function shown in FIG. 10, a shoulder 25 having no arms can be used. In such a case, a spring support 56 higher than that shown in FIG. 2 or the like is directly mounted on the sleeper T, the concrete slab, or the like. As shown in FIG. 10, a recess Td for fixing the spring cradle 56 to a sleeper T, a concrete slab, or the like can be provided.

Further, the height of the pressure receiving surface 22 of the shoulder 20 can be further increased. In such a case, FIG.
As in the case of the insulating gauge plate 45 shown in FIG.

Further, it is also possible to prepare and use a plurality of insulating gauge plates 40 in which the thickness of the horizontal portion 46 is gradually reduced from thick to thin. In such a case, the height of the rail R can be adjusted by one spring receiving base 50.

Although the T-bolt is used as the fixing bolt 60, any suitable bolt for implementing the present invention, such as a hexagon bolt, can be used as long as it can be hooked.

The number, position, shape, and the like of the above-mentioned constituent members are not limited to the above-described embodiment, but can be set to a number, position, shape, and the like suitable for carrying out the present invention.

In each of the drawings, the same components are denoted by the same reference numerals.

[0041]

Since the present invention is configured as described above, the following effects can be obtained.

When the rail is raised, there is no need to provide grooves and side walls in the sleeper unlike the prior art, and since the insulating block is not required, the insulating block does not come off from the sleeper. Further, there is no possibility that the insulating block is damaged.

According to the second aspect of the present invention, since the support portion is further provided, it is possible to more completely prevent the shoulder from overturning (pulling out of the sleeper) due to the moment due to the side pressure of the rail. it can.

According to the third aspect, the engaging portion is further provided on the arm portion of the shoulder, and the engaged portion to be engaged with the engaging portion is provided on the spring cradle, so that the positioning of the spring cradle is easy. And can be prevented from coming off.

According to the fourth aspect, since the insulating gauge plate is further provided with the convex portion, there is no deviation in the axial direction of the rail.

[Brief description of the drawings]

FIG. 1 is a plan view of a rail fastening device with a height adjustment function according to the present embodiment.

FIG. 2 is a front partial cross-sectional view of the rail fastening device with a height adjustment function according to the embodiment.

FIG. 3 is a front view of the shoulder according to the embodiment.

FIG. 4 is a rear view of the shoulder according to the present embodiment.

FIG. 5 is a perspective view of the insulating gauge plate according to the present embodiment.

FIG. 6 is a cross-sectional view of the insulating gauge plate according to the present embodiment.

FIG. 7 is a longitudinal sectional view of the insulating gauge plate according to the present embodiment.

FIG. 8 is an assembly diagram of the rail fastening device with a height adjustment function according to the present embodiment.

FIG. 9 is a partial front sectional view showing a state where a rail is raised.

FIG. 10 is a front partial cross-sectional view of a rail fastening device with a height adjustment function according to another embodiment.

FIG. 11 is a perspective view of an insulating gauge plate according to another embodiment.

FIG. 12 is a front partial cross-sectional view of a rail fastening device with a height adjustment function according to the related art.

FIG. 13 is an enlarged view of a rail fastening device with a height adjustment function according to the related art.

[Explanation of symbols]

 B1 Rail height adjustment plate T Sleeper Tc Groove Td Recess Tf Fixing hole Tw Side wall R Rail Rb Bottom Rs Edge 1 Rail fastening device with height adjustment function 2 Insulation block 2a Hook 2b Hold down 2c Insert 2d Through hole 2e Rail contact surface 2f Pressure receiving surface 3 Spring clip 3a Bolt hole 4 Fixing bolt 6 Track pad 10, 11 Rail fastening device with height adjustment function 20, 25 Shoulder 21 Buried portion 21a Leg 21b Hook portion 22 Pressure receiving surface 23 Hanging portion 23a Insertion part 23b Overhang part 24 Support part 24a Arm part 24b Engagement part 30 Spring clip 31 Support point part 32 Working part 33 Bolt hole 40, 45 Insulation gauge plate 41 Vertical part 42, 46 Horizontal part 43 Convex part 50, 55, 56 spring receiving base 51 receiving groove 52 engaged part 60 fixing bolt 61 head 62 shaft part 70 orbit Head

Claims (2)

(57) [Claims] 1. A rail fastening device with a height adjusting function capable of adjusting the height of a rail, which is used for fixing a rail to a sleeper, a concrete slab, etc., and which is embedded in a sleeper, a concrete slab, etc. Part and the pillow in a state where the buried part is buried,
With a pressure receiving surface protruding from the upper surface of a concrete slab or the like and abutting against the edge of the bottom of the rail, the pressure receiving surface being higher than the height of the edge, a locking portion capable of locking the head of the fixing bolt, and A steel shoulder extending in the opposite direction to the rail and having a support portion having an engagement portion formed at the tip thereof; and a pillow, a concrete slab, or the like, which is located on the upper surface of the shoulder and is fastened. A spring clip provided with a bolt hole inserted into the fixing bolt, which presses the rail, one end forms a fulcrum, and the other end forms an action portion pressing the rail, and a pressure receiving surface of the shoulder. A vertical portion is formed between the bottom portion of the rail and the edge portion, and a horizontal portion is interposed between the lower surface of the operating portion of the spring clip and the upper surface of the bottom portion. Fastening with insulation gauge plate Wherein for supporting the fulcrum portion of the spring clip when it was,
A rail fastening device with a height adjusting function, comprising: a spring receiving base formed with an engaged portion engageable with the engaging portion formed at a tip of the shoulder. 2. An outer surface of a vertical portion of the insulating gauge plate,
2. The rail fastening device with a height adjusting function according to claim 1, wherein convex portions are provided at intervals substantially equal to the length of the shoulder in the rail extending direction. 3.