JP2017503938A - Rail fastening device with outer box for shear load guidance - Google Patents

Abstract

A rail fastening device including a shear load guiding outer box is provided. The lateral load transmitted from the rail is not affected by the bending load applied to the fastening bolt, but is largely canceled in the middle, and then induced to act on the form of the shear load, thereby suppressing damage to the fastening bolt. The entire life of the product can be extended. The base plate, the elastic pad, the guide plate, the fastening clamp, the fastening bolt, and the upper surface of the sleeper are installed in close contact with each other. A base plate for mounting the elastic pad and the guide plate is provided, the lower end surface of the guide plate is mounted on the upper surface of the base plate, and the guide plate is attached to the left and right sides of the base plate. And a fastening bolt that passes through the guide plate is continuous. When a lateral load is applied to the guide plate from a rail, the outer box supports the guide plate by a support portion, while the outer box supports the guide plate by a resistance due to frictional contact with the sleepers. A directional load is attenuated, and the attenuated lateral load is induced to act on the fastening bolt in a form of a shear load generated on a parallel surface in contact with the sleeper. [Selection] Figure 4

Description

  The present invention relates to a rail fastening device, and a fastening bolt is induced by guiding a lateral load transmitted from a rail to act on a form of a shear load after it is largely canceled in the middle without acting on a bending load on the fastening bolt. The present invention relates to a rail fastening device including a shear load guiding outer box that can suppress damage of the product and extend the life of the entire product.

  In general, the track structure is composed of a roadbed, a roadbed, sleepers, rails, and track structures. In such a track structure, the roadbed is a group of gravel formed on the roadbed, which can be broadly divided into general roadbeds, auxiliary roadbeds, concrete roadbeds, etc., and sleepers are placed under the rails and the rails are surely placed in place. In addition, it can be divided into wooden sleepers and concrete sleepers as track material that distributes the vehicle load transmitted through the rails widely on the roadbed. Rails are placed on concrete sleepers or concrete roadbeds by fastening devices with screw spikes and spring clips, etc., and such fastening devices are basically equipped with elastic pads to prevent noise or vibration transmitted from the wheels to the rails during train operation. It comes to reduce.

  FIG. 1 is a cross-sectional view illustrating a configuration of a rail fastening device disclosed in Korean Published Patent Application No. 2010-0126699.

  As shown, the rail fastening device according to the prior art includes a sleeper 3 prefabricated with concrete, and two stop portions 4 spaced apart from each other in the form of a hump-like ridge on the free upper end of the sleeper 3. 5 are formed. On the surfaces where the stop portions 4 and 5 face each other, there are stop surfaces 6 and 7 extending substantially parallel to the rails 2. In this manner, the stops 4 and 5 provide a lateral boundary of a receptacle 8 extending between them in a direction crossing the rail 2, and the flat base of the receptacle forms a substrate U. The rail 2 is installed on the substrate U.

  Under such a base, guide plates 13 and 14 for guiding the rail 2 in the lateral direction and support elements 13a and 13b are provided, and the support element is a stop portion on the side of the guide plate on the side far from the rail 2. 4 and 5, the guide plates 13 and 14 are supported in a state of being mounted on the guide plates 13 and 14, and therefore, a support surface linked to the guide plates 13 and 14 and a support surface 23 linked to the stop portions 4 and 5 are provided. And at least one spring arm for applying an elastic maintaining force on the base 2a of the rail 2, and tension clamps 17a and 17b supported on the guide plates 13 and 14, and fixing the tension clamps 17a and 17b. Fastening bolts 18 and 19 are provided.

  The rail fastening device according to the related art attaches and fixes the rail to the concrete sleeper through such a configuration, and particularly, the lateral force generated when the train travels on the rail 2 is opposite to the rail bottom 12. The guide plates 13 and 14 arranged on the surface support the rail, and the guide plates 13 and 14 can be supported on the side surfaces of the stop portions 4 and 5 through the support elements 15a and 15b.

  However, since such a rail fastening device has to form two stops 4 and 5 separated from each other in the form of a hump-like ridge in the sleeper 3 itself, it is difficult to manufacture the sleeper 3 and excessive cost. There was a problem that took.

  In addition, the rail fastening device according to the related art can stably support the transverse force generated when the train travels on the rail with the stop portions 4 and 5 formed on the sleepers 3 themselves. Although it thinks that it did so, it came to concentrate on the stop parts 4 and 5 in the state which the lateral direction load of the rail 2 was not attenuate | damped on the way, Eventually, the sleeper 3 itself was damaged, and thus the sleeper 3 When the device itself is damaged, it is necessary to carry out an esoteric recovery operation that is not an operation of replacing parts easily.

  As a result, an improved rail fastening device is disclosed in Korean Patent No. 1140389 (Apr. 19, 2012) so that the lateral load of the rail can be supported without forming a stop on the sleeper itself. ing.

  As can be seen from FIGS. 2 and 3, the rail fastening device of the improved form includes an elastic pad 22 provided on the concrete sleeper 21, a base plate 23 provided on the elastic pad 22, and the base plate 23. It includes a rail pad 24 provided on top, a support bracket 27 fixed by fastening bolts 31, and a guide plate 28 fixed by fastening bolts 31 and tension clamps 33.

  In view of such a configuration, the rail 21 is in close contact with the lower flange side surface of the rail and supported by the guide plate 28 fixedly provided by the fastening bolts 31 and the tension clamps 33. It can be seen that a support bracket 27 fixedly provided by fastening bolts 31 supports the guide plate 28 instead of forming a protruding stop portion.

  However, in this process, a lateral load due to the lateral movement of the rail is repeatedly applied to the fastening bolt 31 fixing the guide plate 28, and the force acts on the fastening bolt 31 as a fatal bending load. As a result, the fastening bolt 31 was damaged while being bent. Therefore, there is a problem that not only the bent fastening bolt 31 but also the entire life of the rail fastening device and the replacement cycle are shortened.

  In addition, the present invention has been proposed in order to solve such conventional problems, and the object of the present invention is to prevent the lateral load transmitted from the rail from acting as a bending load on the fastening bolt. A rail fastening device equipped with a shear load guiding outer box that can extend the life of the entire product by suppressing the damage of the fastening bolt by guiding it to act on the form of the shear load after being largely offset in the middle It is to provide.

  In order to achieve the above object, a rail fastening device having a shear load guiding outer box according to the technical idea of the present invention includes a base plate that distributes a load transmitted through a rail from a lower side of the rail, and the base plate An elastic pad that elastically supports from below, a guide plate that is installed in close contact with the side of the lower flange of the rail and supports lateral movement of the rail, and a fastening clamp that supports the lower flange of the rail while pressing from above And a fastening bolt that is embedded in the concrete sleeper through the guide plate while the lower part is pressed against the fastening clamp from above so that the fastening clamp has a fastening force to the lower flange of the rail, and friction with the top of the sleeper It is installed in close contact so that the elastic pad and guide plate are mounted. A base plate that is mounted so that the lower end surface of the guide plate is in close contact with the upper surface of the base plate, and a support portion that supports the guide plate in close contact with the left and right sides of the base plate, respectively. An outer box having a through-hole through which a fastening bolt passing through the guide plate continuously penetrates, and when a lateral load is applied to the guide plate from a rail, the outer box supports the guide plate by a support portion. A lateral load is attenuated by resistance caused by frictional contact with the sleeper while being supported, and the damping bolt acts on the fastening bolt in the form of a shear load generated on a parallel surface in contact with the sleeper for the attenuated lateral load. It is characterized by its technical construction to guide it.

  Here, the vertical through hole formed in the guide plate so that the fastening bolt can pass therethrough has a larger left-right diameter than the through hole formed in the outer box.

Further, the base plate of the outer box has a rectangular shape which is wide on the left and right, and the support part of the outer box is formed to have a thicker width toward the lower part.
In addition, the height of the support portion of the outer box and the guide plate are matched so that no step is formed between them.

  In addition, the outer box connects the base plate from the front end portion and the rear end portion of the support portion in order to reinforce the fragility that damage occurs at the intersection point with the base plate when a lateral load is applied to the support portion. A reinforcing portion is formed.

  In addition, the guide plate is formed in a downward direction from a main body part whose one end is in contact with the lower flange of the rail, and an other end located on the opposite side of the one end of the main body. A first support portion that is in close contact with the support portion of the outer box and has a lower end surface that is in close contact with the base plate of the outer case, and is formed downward from one end portion of the main body portion and penetrates the base plate and the elastic pad. In this state, the lower end surface is formed so as to be in close contact with the base plate of the outer box, and formed downward from the main body portion, and is formed so as to be in contact with the front end portion and the rear end portion of the first support portion. The end surface is composed of an upper surface of the reinforcing portion of the outer box and a third support portion formed so as to be in close contact with the base plate.

  Further, a locking projection is formed on the upper surface of the main body portion of the guide plate to prevent the fastening clamp from being pushed out in the lateral direction, and one side end portion of the main body portion with the locking projection as a center. Further, an auxiliary locking projection is formed on the other side end so that the fastening clamp can be temporarily applied.

  Further, the base plate and the elastic pad are formed to have the same width as the front and rear width of the outer box base plate, and the left end and the right end are the reinforcing portions formed at the front end and the rear end of the outer box, respectively. It is characterized in that it is formed with a narrower width than other parts so that it can be inserted between the third support parts formed respectively between the front end part and the rear end part of the guide plate.

In addition, a rail pad for insulation is further installed between the rail and the base plate, and the rail pad is placed on the front end portion and the rear end portion of the base plate so as not to be pushed out when the rail is deformed in the vertical direction. A pair of non-slip jaws protruding downward are provided.

  The guide plate may be differentiated such that a contact portion that contacts the lower flange of the rail has a relatively high low friction and wear resistance compared to other portions.

  The contact portion of the guide plate may be coated with a material having low friction and wear resistance.

  The contact portion of the guide plate is made of a thin plate made of a material having low friction and wear resistance characteristics.

  The contact part may be formed with a plurality of vertical sliding protrusions.

  In the rail fastening device according to the present invention, the lateral load transmitted from the rail by the configuration including the outer box is not affected by the bending load on the fastening bolt, and is largely offset by the resistance due to frictional contact on the way, and then the shear load is reduced. By guiding to act on the form, damage of the fastening bolt can be suppressed and the life of the entire product can be extended.

  In addition, the present invention can reduce the cost for forming a stop in the form of a hump-like ridge on the concrete sleeper itself by a configuration including an outer box formed with a support portion that supports the guide plate, When a lateral load is applied from the rail, the problem that the sleepers themselves are damaged can be solved.

  In addition, the present invention is a structural weakness in which damage occurs at the point of contact with the base plate when a lateral load is applied to the support portion by a reinforcing portion that connects the base plate from the front end portion and the rear end portion of the outer box support portion. Sex can be reinforced.

  In addition, the present invention does not support the guide plate in close contact with only the support portion of the outer box, but also guides the guide plate in spite of the formation of the reinforcing portion by simultaneously supporting the support portion in close contact with the reinforcing portion. The plate can be stably supported over a wider area with respect to the outer box.

  In addition, when the rail fastening device is installed and disassembled by the locking projections and the plurality of auxiliary locking projections formed on the upper surface of the guide plate, the fastening clamp can be temporarily put in the middle, so that installation and disassembly work can be facilitated.

  In addition, the present invention has a structure in which double and triple wear resistance and low friction characteristics are imparted to the contact portion of the guide plate with respect to the rail to minimize the damage to the guide plate due to the rotational movement of the rail when the train is running. The period can be extended.

It is a side view for demonstrating the structure of the rail fastening apparatus which concerns on a prior art. It is a perspective view for demonstrating the structure of the rail fastening apparatus which concerns on a prior art. It is a side view for demonstrating the structure of the rail fastening apparatus which concerns on a prior art. It is a perspective view of a rail fastening device concerning an example of the present invention. 1 is an exploded perspective view of a rail fastening device according to an embodiment of the present invention. It is a perspective view for demonstrating the structure of a guide plate in the rail fastening apparatus which concerns on the Example of this invention. It is sectional drawing of the rail fastening apparatus which concerns on the Example of this invention. It is a reference sectional view for explaining the operation with respect to the lateral load of a rail by the rail fastening device concerning the example of the present invention. It is a perspective view of a rail fastening device concerning a modification of the present invention. It is an exploded perspective view of a rail fastening device concerning a modification of the present invention. It is a fragmentary sectional view for demonstrating the detailed structure of the contact part of a guide plate in the rail fastening apparatus which concerns on the modified example of this invention. It is a perspective view for demonstrating the structure of a guide plate in the rail fastening apparatus which concerns on the modified example of this invention. It is a reference sectional view for explaining an operation and operation of a rail fastening device concerning a modification example of the present invention.

  A rail fastening device having a shear load guiding outer box according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. While the invention is amenable to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and will herein be described in detail. However, this should not be construed as limiting the invention to the particular forms disclosed, but should be understood to include all modifications, equivalents or alternatives that fall within the spirit and scope of the invention. The same reference numerals have been used for similar components while describing the figures. In the accompanying drawings, the size of the structure is shown larger than the actual size for the sake of clarity of the present invention, or smaller than the actual size for understanding the general configuration.

  In addition, terms such as “first” and “second” are used to describe various components, and the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, the first component can be named the second component, as well as the second component can be named the first component without departing from the scope of the present invention. On the other hand, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by those with ordinary knowledge in the technical field to which this invention belongs. ing. Terms defined in commonly used dictionaries should be construed to have meanings consistent with those in the context of the related art, and are ideal unless explicitly defined herein. Does not translate into meaning or overly formal meaning.

In the rail fastening device according to the embodiment of the present invention, the transversal force transmitted from the rail does not act immediately by the bending load on the fastening bolt, but is largely canceled in the middle, and then acts on the form of the shear load. Configured to be able to. As a result, damage to the fastening bolt can be suppressed and the life of the entire product can be extended.
Hereinafter, the configuration of the rail fastening device according to the embodiment of the present invention will be described in detail.

  4 is a perspective view of a rail fastening device according to an embodiment of the present invention, FIG. 5 is an exploded perspective view of a rail fastening device according to an embodiment of the present invention, and FIG. 6 is a rail according to the embodiment of the present invention. It is a perspective view for demonstrating the structure of a guide plate in a fastening device, FIG. 7 is sectional drawing of the rail fastening device which concerns on the Example of this invention. FIG. 8 is a reference cross-sectional view for explaining the action of the rail fastening device according to the embodiment of the present invention on the lateral load of the rail.

  4 to 7, the rail fastening device according to the embodiment of the present invention includes a guide plate 110, a rail pad 120, a base plate 130, an elastic pad 140, a fastening bolt 160, a landfill. A pipe 170 and an outer box 150 for mounting the guide plate 110, the rail pad 120, the base plate 130, and the elastic pad 140 including the fastening clamp 180.

  Here, the outer box 150 is combined with the guide plate 110 and the lateral force transmitted from the rail 10 through the guide plate 110 is not affected by the bending load applied to the fastening bolt 160 in FIG. As shown, the resistance F3 due to the frictional contact between the outer box 150 and the concrete sleeper is positively used to significantly attenuate the lateral load, and in that state, the center is induced to act on the form of the shear load F4. It can be noted that it plays a role.

  Therefore, the outer box 150 is installed in close contact so that the lower surface thereof is in frictional contact with the upper surface of the sleeper. The guide plate 110, the rail pad 120, the base plate 130, and the elastic pad 140 are mounted to guide the outer plate 150 to the base plate 151. The plate 110 is brought into close contact. The base plate 151 of the outer box 150 has a rectangular shape that is long to the left and right, and includes a support portion 152 that supports the guide plate 110 in close contact with the left and right sides thereof, and is fastened in a state of penetrating the guide plate 110. A through-hole 151a through which the bolt 160 can continuously pass is provided. Here, it is preferable that the lower surface of the outer box 150 has a high coefficient of friction through surface treatment in order to increase the frictional force F3 with the concrete sleepers. Such surface treatment may include various methods such as a method for increasing the roughness on the lower surface of the outer box 150, a method for forming fine irregularities in micro units, and a method for applying a specific substance for increasing the friction coefficient. it can.

  In addition, the support part 152 of the outer box 150 is formed to have a thicker width toward the lower part. Through such a configuration, the support portion 152 can be structurally firmly provided, and can stably support the lateral load of the rail 10 that is intensively transmitted through the guide plate 110. In addition, the outer box 150 further includes a reinforcing portion 153 formed to connect the base plate 151 from the front end portion and the rear end portion of the support portion 152. Here, when viewed from the front side or the rear side, the reinforcing portion 153 of the outer box 150 is formed in a trapezoidal shape whose upper surface is inclined, and the height decreases as the distance from the support portion 152 increases. As described above, the outer box 150 is provided with the reinforcing portion 153 so that it is damaged at the intersection point between the base plate 151 and the supporting portion 152 which is considered to be structurally most vulnerable when a lateral load is applied to the supporting portion 152. The problem that occurs can be solved.

  The guide plate 110 serves to support the lateral movement of the rail 10. For this purpose, the guide plate 110 includes a main body 111, a first support 112, a second support 113, and a third support 114. Here, the main body 111 of the guide plate 110 is formed in a flat plate shape, and one end of the main body 111 contacts the lower flange of the rail. The first support part 112 of the guide plate 110 is configured in the form of a wall formed downward from the other end located on the opposite side of the one end of the main body 111, and the side surface of the first support part 112 is the outer side. The lower end surface is in close contact with the base plate 151 of the outer box 150 while in close contact with the support portion 152 of the box 150. The second support part 113 of the guide plate 110 is formed in the form of a protrusion formed downward from one end of the main body part 111, and the lower end surface of the guide plate 110 penetrates through the base plate 130 and the elastic pad 140. A semicircular groove is provided along the vertical through-hole 111a so as to be in close contact with the base plate 151 of the outer box 150 and to contact the outer peripheral surface of the fastening bolt 160. Meanwhile, the third support part 114 of the guide plate 110 is configured in the form of a wall body formed downward from the main body part 111, and the front end part of the first support part 112 configured in the form of a wall body. And is formed in a form that meets the rear end. Then, the inclined first portion 114a in contact with the upper surface of the reinforcing portion 153 of the outer box 150, the second portion 114b in contact with the base plate, the first portion 114a, and the second portion 114b are connected. And a vertical third portion 114c.

The second support part 113 having a protrusion shape in the configuration of the guide plate 110 is fitted into the first fitting hole 131a and the second fitting hole 141a of the base plate 130 and the elastic pad 140, which is the guide plate 110. Thus, the vertical load transmitted to the elastic pad 140 is not applied, so that the interference between the guide plate 110 and the base plate 130 does not occur when the rail 10 is loaded. In addition, a vertical through hole 111a penetrating up and down the position on the boundary line where the second support part 113 is formed is formed so as to be positioned on a continuous line with the through hole 151a formed in the outer box 150. To do. Accordingly, the fastening bolt 160 can be embedded in the sleeper after passing through the vertical through hole 111a and the through hole 151a. Here, unlike the through hole 151a formed in the outer box 150, the vertical through hole 111a formed in the guide plate 110 is formed larger than the through hole 151a so as not to press the fastening bolt 160. Is desirable. This prevents a horizontal load transmitted from the rail 10 from being applied to the upper portion of the fastening bolt 160 through the guide plate 110 and acting as a bending load. Instead, the shear is concentrated on the lower portion of the fastening bolt 160 through the outer box 150. This is so that it can act on the form of the load.

In the guide plate 110, the first support part 112 and the third support part 114 are formed in a form in which the first support part 112 and the third support part 114 are in contact with each other, and the lower end surface profile of the third support part 114 is the first part 114a and the second part 114b. Due to the configuration formed by the third portion 114c so as to be in close contact with the upper surface of the reinforcing portion 153 of the outer box 150 along the base plate, when the guide plate 110 receives a load in the lateral direction from the rail 10, It is supported not only in close contact with the support part 152 of the box 150 but also in close contact with the reinforcing part 153. Accordingly, the guide plate 110 is supported more stably with respect to the outer box 150.

  Further, a locking projection 115a is formed on the upper surface of the main body portion 111 of the guide plate 110 to prevent the fastening clamp 180 from being pushed and pushed out in the lateral direction. The main body portion is centered on the locking projection 115a. Auxiliary locking protrusions 115b and 115c are further formed so that the fastening clamp 118 is temporarily applied to one end and the other end of 111, respectively. In the case of the auxiliary locking projections 115b and 115c, when the rail fastening device according to the present invention is installed and disassembled, the fastening clamp 118 can be temporarily applied in the middle to facilitate installation and disassembly work.

The rail pad 120 serves to insulate between the rail 10 and the base plate 130. For this purpose, it is provided on the lower side of the rail 10 and has a rectangular plate shape having an area corresponding to a region between the guide plate 110 and the guide plate 110 provided on the left and right sides.
In addition, the rail pad 120 includes a pair of anti-slip jaws 121 protruding downward so as to be applied to the front end portion and the rear end portion of the base plate so as not to be pushed out when the rail is deformed in the vertical direction.

  The base plate 130 serves to distribute the load transmitted through the rail 10. Therefore, the base plate 130 is made of a steel material and is provided between the rail pad 120 and the elastic pad 140. The shape is a square plate shape, and first fitting holes 131a are formed on the left side and the right side to be fitted into the fitting protrusions 111 of the guide plate 110, respectively. In addition, the front and rear width of the base plate 130 is formed to be the same width as the front and rear width of the base plate 151 of the outer box 150, and the left end and the right end are respectively formed at the front end and the rear end of the outer box 150. It is formed with a narrower width than other parts so as to be inserted between the reinforcing members 153 and between the third support portions 114 formed at the front end portion and the rear end portion of the guide plate 110, respectively. As described above, the base plate 130 can cover the entire remaining area except for the interference between the portions of the base plate 151 of the outer box 150 where the support portion 152 and the reinforcing portion 153 are formed. Formed.

  The elastic pad 140 is made of an elastic material and plays a role of elastically supporting the lower portion of the rail 10. The elastic pad 140 is installed on the lower side of the base plate 130 and has a square plate shape like the base plate 130. The left and right sides of the elastic pad 140 are fitted into the fitting protrusions 111 of the guide plate 110, respectively. A joint hole 141a is formed. Also in the case of the elastic pad 140, the front-rear width is formed to be the same as the front-rear width of the base plate 151 of the outer box 150, and the left end and the right end are at the front end and the rear end of the outer box 150. It is formed with a narrower width than other parts so as to be inserted between the respective reinforcing members 153 and between the third support portions 114 respectively formed at the front end portion and the rear end portion of the guide plate 110. The As described above, the elastic pad 140 covers the entire remaining area except the base plate 130 and the base plate 151 of the outer box 150 except for the interference between the portions where the support portion 152 and the reinforcement portion 153 are formed. It is formed into a size and shape that can be made.

The fastening bolt 160 is formed with a male screw 161 at the bottom while pressing the fastening clamp 180 from the upper side by the head portion 162 so that the fastening clamp 180 has a fastening force to the lower flange of the rail 10, and the guide plate 110 and the outer box. It is fastened with a landfill pipe 170 that penetrates 150 and is embedded in a concrete sleeper.

  The fastening clamp 180 serves to support the lower flange of the rail 10 while pressing it from above. The fastening clamp 180 applies a spring-resilient holding force to the lower flange of the rail 10 through a fastening portion that is seated on the lower flange of the rail 10 while being pressed by the fastening bolt 160. Become.

  As shown in FIG. 8, the rail fastening device according to the embodiment of the present invention having the above-described configuration is subjected to the lateral load F1 on the guide plate 110 that is in close contact with the lower flange of the rail 10 when the rail 10 moves laterally. The guide plate 110 transmits a lateral load F2 to the outer box 150 through the support portion 152 of the outer box 150 supporting itself (in this process, the guide plate 110 is laterally transferred from the guide plate 110 to the fastening bolt 160). The degree to which the directional load is transmitted seems to be insignificant, but this is a relatively large size so that the vertical through hole 111a of the guide plate 110 through which the fastening bolt 160 passes does not adhere to the fastening bolt 160. Because it is formed in). Next, the lateral load transmitted to the outer box 150 is transmitted to the fastening bolt 160 and acts, but before that, the lateral load is caused by the resistance F3 due to frictional contact between the lower surface of the outer box 150 and the upper surface of the sleepers. The directional load is attenuated by a considerable width, and in this state, the fastening bolt 160 acts in the form of a shear load F4 in a region A on a parallel surface where the lower surface of the outer box 150 and the upper surface of the sleeper are in contact. In this way, the lateral load generated from the rail 10 does not act on the fastening bolt 160 due to the bending load, but acts on the form of the shear load in the region A on the parallel surface where the outer box 150 and the sleepers come into contact. The problem that the bolt 160 bends easily is eliminated, and the bolt 160 can be supported more stably.

  9 is a perspective view of a rail fastening device according to a modified embodiment of the present invention, FIG. 10 is an exploded perspective view of a rail fastening device according to a modified embodiment of the present invention, and FIG. 11 is a modified embodiment of the present invention. FIG. 12 is a partial cross-sectional view for explaining the detailed configuration of the contact portion of the guide plate in the rail fastening device according to FIG. 12, and FIG. 12 explains the configuration of the guide plate in the rail fastening device according to a modified embodiment of the present invention. FIG. 13 is a reference cross-sectional view for explaining the operation and operation of a rail fastening device according to a modified embodiment of the present invention.

  9 to 13, in the case of the rail fastening device according to the modified embodiment of the present invention, the guide plate 110, the rail pad 120, the base plate 130, and the elastic pad 140 are compared with the embodiment before the deformation. And the fastening bolt 160, the landfill pipe 170, the fastening clamp 180, and the outer casing 150 that mounts the guide plate 110, the rail pad 120, the base plate 130, and the elastic pad 140 are substantially the same. In the case of the guide plate 110 provided to support the lateral movement of the rail, the contact portion 110b that contacts the lower flange of the rail 10 has relatively high low friction and wear resistance characteristics compared to other portions. It is unique in that it has a distinctive and distinctive structure. Thereby, it becomes possible to control damage due to frictional contact during the dynamic movement of the rail 10.

Here, in the case of the guide plate 110 provided to support the lateral movement of the rail, the contact portion 110b that contacts the lower flange of the rail 10 has relatively high low friction and wear resistance characteristics compared to other portions. This makes it possible to control the damage caused by frictional contact during the dynamic movement of the rail 10.
The guide plate 110 serves to support the lateral movement of the rail 10, and in particular, the modified embodiment of the present invention is configured to minimize damage caused by the rotational movement of the rail 10. For this reason, the guide plate 110 has a differentiated structure so that the contact portion 110b contacting the lower flange of the rail 10 has relatively high low friction and wear resistance compared to other portions. Specifically, as shown in FIG. 4, the guide plate 110 is formed with a coating layer 117 coated with a material having low friction and wear resistance as shown in FIG. Since various materials having such low friction and wear resistance are known, one of them can be adopted and applied. For example, there are examples of patent applications that introduce materials having low friction and wear resistance properties:

  Some of the low-friction and wear-resistant materials disclosed in these cases belong to high costs, but consumption and construction costs associated with frequent replacement of guide plates and losses due to train operation interruptions, etc. It is possible to adopt an appropriate one with comprehensive consideration.

Further, the contact portion 110b itself of the guide plate 110 is separated from the main body portion 111 selectively or overlapped with the coating of the low friction and wear resistance material as described above, so that the higher low friction and resistance. It is provided with a thin plate-like material having wear characteristics. Here, the contact portion 110b itself is provided with a material having low friction and wear resistance, and the surface thereof is again coated with another material having low friction and wear resistance, so that a double structure is formed initially. Resists the coating layer 117 from being worn by frictional contact with the rail 10, and can withstand the contact portion 110b made of a material having low friction and wear resistance after the coating layer 117 is damaged. Thus, damage caused by frictional contact with the rail can be resisted to the maximum. When the damage progresses to some extent, it is only necessary to separate and replace the thin plate-like contact portion 110b from the main body portion 111 of the guide plate 110 instead of replacing the entire guide plate 110. As a result, the replacement period and cost due to the damage of the guide plate 110 can be greatly reduced.

  Further, a plurality of vertical sliding protrusions 116 are formed on the contact part 110b. Such a sliding protrusion 116 is still supported with respect to the lateral movement of the rail 10 and still slides while reducing the contact area with the lower flange with respect to the rotational movement of the rail 10. To minimize damage caused by frictional contact.

  On the other hand, when the guide plate 110 is viewed as a whole, the main body 111, the first support 112, the second support 113, and the third support 114 are used to support the lateral movement of the rail 10. And consist of Here, the main body portion 111 of the guide plate 110 has a flat plate shape, and a contact portion 110b that contacts the lower flange of the rail is formed at one end portion thereof. The first support part 112 of the guide plate 110 is in the form of a wall formed downward from the other end located on the opposite side of the one end of the main body 111, and the side surface of the first support part 112 is the outer box. The lower end surface is in close contact with the base plate 151 of the outer box 150 while in close contact with the support portion 152 of 150. The second support part 113 of the guide plate 110 is in the form of a protrusion formed downward from one end of the main body part 111, and the lower end surface of the guide plate 110 penetrates the base plate 130 and the elastic pad 140. A semicircular groove is provided along the vertical through-hole 111a so as to be in close contact with the base plate 151 of the box 150 and come into contact with the outer peripheral surface of the fastening bolt 160. Meanwhile, the third support portion 114 of the guide plate 110 has a wall shape formed downward from the main body portion 111, and the front end portion and the rear end of the first support portion 112 have a wall shape. It is formed in a form that intersects the part. Then, the inclined first part 114a whose lower end surface is in contact with the upper surface of the reinforcing portion 153 of the outer box 150, the second part 114b in contact with the base plate, the first part 114a and the second part 114b And a vertical third portion 114c to be connected.

  The second support part 113 having a protrusion shape in the configuration of the guide plate 110 is fitted into the first fitting hole 131a and the second fitting hole 141a of the base plate 130 and the elastic pad 140, which is a guide. The vertical load transmitted to the elastic pad 140 by the plate 110 is not applied, so that the interference between the guide plate 110 and the base plate 130 does not occur when the rail 10 is loaded. Then, a vertical through hole 111a penetrating vertically is formed at a position on the boundary line where the second support portion 113 is formed so as to be positioned on a continuous line with the through hole 151a formed in the outer box 150. Thereby, after the fastening bolt 160 penetrates through the vertical through hole 111a and the through hole 151a, it is embedded in the sleeper. Here, unlike the through hole 151 a formed in the outer box 150, the vertical through hole 111 a formed in the guide plate 110 is formed larger than the through hole 151 a so as not to press the fastening bolt 160. Is desirable. This prevents the horizontal load transmitted from the rail 10 from being applied to the upper portion of the fastening bolt 160 through the guide plate 110 and acting as a bending load, and instead concentrated to the lower portion of the fastening bolt 160 through the outer box 150. This is because it can act on the form of the shear load.

  In addition, the lower end surface profile of the third support part 114 is the first part 114a and the second part 114b in a state in which the first support part 112 and the third support part 114 are formed in the form of being in contact with each other on the guide plate 110. When the guide plate 110 receives a load in the lateral direction from the rail 10 due to the configuration formed to be in close contact with the upper surface of the reinforcing portion 153 of the outer box 150 and the base plate, the third portion 114c, It is not only closely supported by the support portion 152 of the outer box 150 but is also closely supported by the reinforcing portion 153 at the same time. Accordingly, the guide plate 110 is supported more stably with respect to the outer box 150.

  Further, a locking projection 115a is formed on the upper surface of the main body portion 111 of the guide plate 110 to prevent the fastening clamp 180 from being pushed and pushed out in the lateral direction. The main body portion is centered on the locking projection 115a. Auxiliary locking protrusions 115b and 115c are further formed so that the fastening clamp 118 is temporarily applied to one end and the other end of 111, respectively. In the case of the auxiliary locking projections 115b and 115c, when the rail fastening device according to the present invention is installed and disassembled, the fastening clamp 118 can be temporarily put in the middle to facilitate installation and disassembly work. This is the same as the embodiment.

  The rail fastening device according to the modified embodiment of the present invention having the above-described configuration is such that the guide plate 110 is in close contact with the lower flange of the rail 10 when the rail 10 rotates (FM) as shown in FIG. The contact portion 110b is frictionally contacted by the lower flange of the rail 10 in the vertical direction. However, a large number of sliding protrusions 116 formed in a direction perpendicular to the contact portion 110b of the guide plate 110 reduce a contact area with the lower flange of the rail 10, and the lower flange is formed on the sliding protrusion 116 formed on the contact portion 110b. The primary protection is obtained while sliding along the vertical direction.

  Next, the coating layer 117 of the low friction and wear resistant material formed on the contact portion 110b of the guide plate 110 is also guided so that the lower flange of the rail 10 is in smooth contact, thereby minimizing damage due to contact. be able to. Further, when the contact part 110b is made of a thin plate-like member joined to the main body part 111 and made of a low friction and wear-resistant material, the contact part 110b can be connected to the lower flange of the rail 2 even after the coating layer 117 is damaged. Get tertiary protection to minimize contact damage.

  Therefore, the life and replacement period of the guide plate 110 that is in direct contact with the lower flange of the rail 10 can be greatly extended.

  Although the preferred embodiments of the present invention have been described above, the present invention can be used with various changes, modifications, and equivalents. It is apparent that the present invention can be similarly applied by appropriately modifying the above embodiment. Accordingly, the above description is not intended to limit the scope of the invention, which is determined by the following claims.

110 Guide plate 111 Main body part 110b Contact part 112 First support part 113 Second support part 114 Third support part 115a Locking protrusion 115b, 115c Auxiliary locking protrusion 116 Sliding protrusion 120 Rail pad 130 Base plate 140 Elastic pad 150 Outer box 151 Base plate 151a Through hole 152 Support portion 153 Reinforcement portion 160 Fastening bolt 170 Landfill pipe 180 Fastening clamp

Claims (13)

In a rail fastening device that attaches and fixes a rail to a concrete sleeper,
A base plate that distributes the load transmitted through the rail from the underside of the rail;
An elastic pad elastically supported from the lower side of the base plate;
A guide plate installed in close contact with the side of the lower flange of the rail to support the lateral movement of the rail;
A fastening clamp that supports the lower flange of the rail while pressing it from above,
Fastening bolts that are embedded in concrete sleepers through the guide plate while pressing the fastening clamp from above so that the fastening clamp has a fastening force to the lower flange of the rail;
The base plate is installed in close contact with the upper surface of the sleeper, and includes a base plate for mounting the elastic pad and the guide plate. The base plate is mounted so that a lower end surface of the guide plate is in close contact with the upper surface of the base plate. The left side and the right side each include a support portion that closely supports the guide plate, and includes an outer box including a through hole through which a fastening bolt that passes through the guide plate continuously passes.
When a lateral load is applied to the guide plate from a rail, the outer box attenuates the lateral load by resistance due to frictional contact with the sleeper while supporting the guide plate by a support portion, and against the attenuated lateral load. And a rail fastening device for guiding the fastening bolt to act on a form of a shear load generated on a parallel surface in contact with the sleeper.   The rail fastening according to claim 1, wherein a vertical through hole formed to allow the fastening bolt to pass through the guide plate has a larger left-right diameter than a through hole formed in the outer box. apparatus.   The rail fastening device according to claim 2, wherein a base plate of the outer box has a rectangular shape that is wide on the left and right sides, and a support portion of the outer box is formed to have a thicker width toward a lower part.   The rail fastening device according to claim 3, wherein the height of the support portion of the outer box and the guide plate are matched so that no step is formed between them.   The outer box is a reinforcement that connects the base plate from the front end portion and the rear end portion of the support portion in order to reinforce the fragility that damage occurs at the intersection point with the base plate when a lateral load is applied to the support portion. The rail fastening device according to claim 3, wherein a portion is formed.   The guide plate is formed in a downward direction from a main body portion whose one end portion is in contact with the lower flange of the rail, and another end portion located on the opposite side of the one end portion of the main body portion. The lower end surface of the main body part is formed in a downward direction from the one end of the main body part and penetrates the base plate and the elastic pad. A second support portion having an end surface closely contacting a base plate of the outer box; and a lower end surface formed from the main body portion so as to intersect with a front end portion and a rear end portion of the first support portion. The rail fastening device according to claim 5, comprising a top surface of a reinforcing portion of the outer box and a third support portion formed so as to be in close contact with the base plate.   A locking projection is formed on the upper surface of the main body portion of the guide plate to prevent the fastening clamp from being pushed out in the lateral direction, and one side end portion of the main body portion with the locking projection as a center. The rail fastening device according to claim 6, wherein auxiliary fastening protrusions are provided to allow the fastening clamps to be temporarily applied to the other end portions, respectively.   The base plate and the elastic pad are formed so that the front and rear widths are the same as the front and rear widths of the outer box base plate, and the left end portion and the right end portion are reinforcement portions formed respectively at the front end portion and the rear end portion of the outer box. 7. The guide plate according to claim 6, wherein the guide plate is formed with a narrower width than other portions so that the guide plate can be inserted between the third support portions formed at the front end portion and the rear end portion of the guide plate. Rail fastening device.   A rail pad for insulation is further installed between the rail and the base plate, and the rail pad is placed downward so as to be applied to the front end portion and the rear end portion of the base plate so as not to be pushed out when the rail is longitudinally deformed. The rail fastening device according to claim 1, further comprising a pair of protruding non-slip jaws.   2. The guide plate according to claim 1, wherein the guide plate is differentiated such that a contact portion in contact with a lower flange of the rail has relatively high low friction and wear resistance characteristics compared to other portions. The described rail fastening device   The rail fastening device of claim 10, wherein the contact portion of the guide plate is coated with a material having low friction and wear resistance.   The rail fastening device according to claim 10, wherein the contact portion of the guide plate is made of a thin plate made of a material having low friction and wear resistance characteristics.   The rail fastening device of claim 12, wherein the contact portion includes a plurality of vertical sliding protrusions.

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