JP4651508B2 - Railway rail support pad - Google Patents

Description

  The present invention relates to a railroad rail support pad that is interposed between a rail and a rail support in a railroad track and supports the rail.

  As a conventional rail rail support pad of this type, as disclosed in Patent Document 1, for example, a pad interposed between a rail and a rail support body, that is, a corner of a bag body has fluidity and room temperature curing. The bag body has an inlet for injecting the resin, and an exhaust port is provided in the bag body at a position diagonal to the inlet, and when the resin is injected into the bag body from the inlet port, the air in the bag body There is known a railroad rail support pad which is discharged from the exhaust port and excess resin in the bag body is also discharged from the exhaust port.

This railroad rail support pad is generally mounted on a rail support body, and a rubber pad is mounted on the rail support body so as to receive a rail mounted on the rubber pad. . Railway rail support pads and rubber pads are arranged at appropriate intervals in the length direction of the rail, and the bag-like rail support pads are sandwiched between the rail support and the rubber pads. The rail is placed on the rubber pad, and the adhesion of the rail to the rail support is adjusted by the resin injected into the bag-like railroad rail support pad.
JP 2004-84467 A

  In the railroad rail support pad disclosed in Patent Document 1, the work of injecting resin into the bag body from the injection port must be performed on site, and there is a problem that the work is troublesome. In addition, there has been a problem that the periphery is soiled when the resin is injected into the bag body from the injection port and when the excess resin in the bag body is discharged from the exhaust port.

  The object of the present invention is to solve such a problem, and it is not necessary to inject resin at the site, and there is no contamination of the surroundings by the resin at the site, and the operation at the site can be easily performed. An object of the present invention is to provide a railway rail support pad.

A railroad rail support pad according to a first aspect of the present invention is a railroad rail support pad interposed between a rail support and a rail, and is made using a synthetic resin sheet as a material. An outer bag and an inner bag stored in the outer bag, and the first reaction solution as the main agent or the second reaction solution as the curing agent is placed in the outer bag, A second reaction solution as a curing agent or a first reaction solution as a main agent is placed in an inner bag provided in the inner bag, and the inner bag is configured to be at least partially opened by an external pressure, and the outer bag Is provided with a detachable secondary bag in communication therewith.

  A railroad rail support pad according to a second aspect of the present invention is a railroad rail support pad interposed between a rail support and a rail, and is made using a synthetic resin sheet as a material. An outer bag and a first inner bag and a second inner bag housed in the outer bag. The first inner bag contains a first reaction solution as a main agent; A second reaction solution is placed in the inner bag as a curing agent, and the first and second inner bags are configured to be at least partially opened by an external pressure. The bag is provided to communicate with each other.

  The railroad rail support pad according to claim 3 of the present invention is characterized in that a glass fiber cloth having the same size as the inside of the outer bag is accommodated in the outer bag.

  As described above, the rail-rail-supporting pad of the present invention mixes the first reaction solution as the main agent and the second reaction solution as the curing agent in the outer bag by opening the inner bag by applying external pressure. The excess of the compound of the first reaction solution and the second reaction solution can be led to a side bag, and the side bag can be easily removed from the outer bag. Thus, it is not necessary to perform the resin injection work on site, and there is no contamination of the surroundings with the resin on site, and the work on site can be easily performed. Further, by storing the glass fiber cloth in the outer bag, the resin, which is a compound of the first reaction solution and the second reaction solution, permeates the glass fiber cloth, and the strength as a railroad rail support pad is increased. Can be improved.

Embodiments of the present invention will be specifically described below with reference to the drawings.
First, the first embodiment shown in FIG. 1 to FIG. 9 will be described. 1 is an outer bag, 2 is a first housing that is accommodated in the outer bag 1 in approximately the same size as the inside of the outer bag 1 The inner bag 3 is a second inner bag which is smaller than the first inner bag 2 and is also housed in the outer bag 1, and these outer bag 1, first inner bag 2 and second inner bag 3. Is made using a synthetic resin sheet as a material.

  The outer bag 1 and the first and second inner bags 2 and 3 are each formed in a four-sided seal, each having a rectangular planar shape, specifically a rectangular shape, when placed on a table or the like. And among these outer bag 1, first and second inner bags 2 and 3, outer bag 1 is made of a film material whose inner layer is a low melting point, for example, polyethylene, and the outer layer is a film material having a higher melting point than the inner layer, For example, the outer bag 1 is made of a general sheet material made of nylon, and heat-sealing the inner layers on the four sides of the two sheet materials.

  The first and second inner bags 2 and 3 are basically composed of a film material having a low melting point, and the outer layer is composed of a film material having a higher melting point than the inner layer, like the outer bag 1. Although it is made of a sheet material, the film material constituting the inner layer 4 is a blend of linear low density polyethylene and polybutene-1, and the linear low density polyethylene has a density of 0.915. Those in the range of ˜0.950 are used, and the blend ratio of the linear low density polyethylene and polybutene-1 is set to be in the range of 70:30 to 98: 2. And when making the said 1st and 2nd inner bags 2 and 3 by heat sealing using the film material formed by blending this linear low density polyethylene and polybutene-1, the flow direction (arrow A direction) of a film It was found that there is a difference in the seal strength between the heat seal portion in the vertical (X) direction and the heat seal portion in the (Y) direction parallel to the film flow direction (arrow A direction). That is, the strength in the width direction facing the film flow direction (arrow A direction) in the vertical (X) direction is perpendicular to the film flow direction (arrow A direction) in the parallel (Y) direction. It tends to be weaker than the strength in the width direction. This is for the following reason. The resin that is the material of the inner layer 4 of the first and second inner bags 2 and 3 is a blend of linear low-density polyethylene and polybutene-1, and the inner layer made of this blended film material. When laminating 4 and the outer layer 5 made of nylon or polyethylene terephthalate, the processing speed acts to show uniaxial orientation between the linear low density polyethylene and the polybutene-1. That is, a linear low density polyethylene resin and a polybutene-1 resin are irregularly arranged. This state is shown in FIG. 4, in which 6 is a linear low density polyethylene resin and 7 is a polybutene-1 resin. Thus, when the inner layer 4 has uniaxial orientation, in order to make the inner bag 2 and the pouch 3 of the four-side seal, when the film material of the two-layer structure is overlapped and the peripheral portion thereof is heat sealed, 5, 6 parts of linear low density polyethylene resin and 6 parts of linear low density polyethylene resin, 7 parts of polybutene-1 resin and 7 parts of polybutene-1 resin, linear low density Combinations facing each other in three patterns of 6 parts of polyethylene resin and 7 parts of polybutene-1 resin can be made. At this time, 6 parts of linear low density polyethylene resin, 6 parts of linear low density polyethylene resin, 7 parts of polybutene-1 and 7 parts of polybutene-1 are heat-sealed with the same kind of resins. Therefore, the heat seal strength within the range of the characteristics of the resin can be obtained. However, since different types of resins face each other at a portion where 6 parts of the linear low density polyethylene resin and 7 parts of the polybutene-1 face each other, the heat seal strength with individual characteristics does not appear. Such a state is mixed on the heat seal surface. Depending on the uniaxial orientation and the heat sealing characteristics by the combination of the three patterns, and the heat sealing direction, the following phenomenon occurs.

  The combination of the three patterns is irregular at the sealing edge in the width direction facing the film flow direction (arrow A direction) in the heat seal portion in the direction (X) perpendicular to the film flow direction (arrow A direction). Appears (see FIG. 6). On the other hand, the three patterns are formed on the sealing edge in the width direction that is perpendicular to the film flow direction (arrow A direction) in the heat seal portion in the (Y) direction parallel to the film flow direction (arrow A direction). One of the combinations appears (see FIG. 7).

  It is a well-known fact that when measuring the heat seal strength, the seal width and strength of the object are in a proportional relationship, and the wider the width, the higher the strength. In the width direction facing the film flow direction (arrow A direction) of the heat seal portion perpendicular (X) to the film flow direction (arrow A direction), there is no combination of the three patterns at the seal edge. A combination of 6 parts of linear low density polyethylene resin, 6 parts of linear low density polyethylene resin, 7 parts of polybutene-1 and 7 parts of polybutene-1 due to appearance in the regulations Occupies less than 100% of the seal width, and the presence of a combination of 6 parts of linear low density polyethylene resin and 7 parts of polybutene-1 at the seal edge reduces the heat seal strength. In the width direction perpendicular to the film flow direction (arrow A direction) of the heat seal portion in the (Y) direction parallel to the film flow direction (arrow A direction), sealing is performed because the molecules are uniaxially oriented. When a combination of 6 parts of a linear low density polyethylene resin and 6 parts of a linear low density polyethylene resin comes out at the edge, a combination of 7 parts of polybutene-1 resin and 7 parts of polybutene-1 resin In some cases, a combination of 6 parts of a linear low density polyethylene resin and 7 parts of a polybutene-1 resin may appear. Compared with the sealing strength in the width direction facing the film flow direction (arrow A direction) in the heat seal portion perpendicular (X) to the film flow direction (arrow A direction), linear low density polyethylene resin When a combination of 6 parts and 6 parts of a linear low density polyethylene resin comes out, or when a combination of 7 parts of polybutene-1 resin and 7 parts of polybutene-1 comes out, the strength is strong and linear When a combination of 6 parts of low-density polyethylene resin and 7 parts of polybutene-1 is present, the strength is weak. However, the seal strength looks at the strength of the seal edge. If a combination of 6 parts of linear low density polyethylene resin and 7 parts of polybutene-1 is present, the strength is weak and peeling occurs. If the next 6 parts of linear linear low density polyethylene resin and 6 parts of linear low density polyethylene resin or 7 parts of polybutene-1 resin and 7 parts of polybutene-1 are produced The seal strength is increased. When viewed in total, the sealing strength in the width direction perpendicular to the film flow direction (arrow A direction) in the heat seal portion parallel (Y) direction to the film flow direction (arrow A direction) is the film flow direction. It becomes stronger than the sealing strength in the width direction facing the film flow direction (arrow A direction) in the heat seal portion in the vertical (X) direction with respect to (arrow A direction). In order to express such characteristics, as described above, the linear low density polyethylene as the material of the inner layer 4 is preferably one having a density in the range of 0.915 to 0.950. The blend ratio of density polyethylene and polybutene-1 is preferably in the range of 70:30 to 98: 2. Outside these ranges, the seal strength in the width direction facing the film flow direction (arrow A direction) in the heat seal portion perpendicular to the film flow direction (arrow A direction) and the film flow direction. A clear difference is made between the seal strength in the width direction perpendicular to the film flow direction (arrow A direction) in the heat seal portion in the parallel (Y) direction with respect to (arrow A direction). Is difficult to achieve.

  In the present embodiment, by utilizing the above-described properties, the two-layer film materials are overlapped and the periphery thereof is heat-sealed, whereby the four-side sealed rectangular first and second inner bags are sealed. 2 and 3 at that time, the width (X) direction perpendicular to the film flow direction (arrow A direction), that is, the width facing the film flow direction (arrow A direction) of the heat seal portion 8 on the short side. The seal strength in the direction is parallel (Y) to the film flow direction (arrow A direction), that is, the seal strength in the width direction facing the film flow direction (arrow A direction) of the heat seal portion 9 on the long side. Further, the seal portion is configured to peel from the width direction of the heat seal portion 8 on the short side side due to an increase in internal pressure of the first and second inner bags 2 and 3. More specifically, the widthwise dimension of one heat seal portion 8 on the short side so that the seal portion peels quickly from the width direction of one heat seal portion 8 among the heat seal portions 8 facing each other on the short side. Is shorter than the dimension in the width direction of the other heat seal portion 8 on the short side.

  In short, the external pressure is applied to the first and second inner bags 2 and 3 by forming a portion having a narrow heat seal width at an appropriate location in one heat seal portion 8 of the heat seal portions 8 facing each other on the short side. By applying (pressing and pressurizing force) and increasing the internal pressure, the narrow part of the heat seal width can be peeled off quickly and opened.

  The first inner bag 2 made as described above contains the first reaction solution as the main agent from one side of the opening of the first inner bag 2 so that the first inner bag 2 is sealed. The second inner bag 3 is closed inside the second inner bag 3 with the second reaction solution stored as a curing agent from one side of the opening of the second inner bag 3, and the second inner bag 3 is closed in a sealed state. . The first inner bag 2 containing the first reaction solution as the main agent and the second inner bag 3 containing the second reaction solution as the curing agent are the outer bag 1 from the opening 1 side of the outer bag 1. At the same time, a single glass fiber cloth 10 having the same size as the inside of the outer bag 1 is placed in the outer bag 1 along the one side of the inner bag 2, One side of the opening of the outer bag 1 is closed in a sealed state. In addition, the outer bag 1 is provided with a sub-bag 11 for removing an excess of the compound of the first reaction solution and the second reaction solution, which are contents in use, so as to communicate with one end corner portion. Yes. In the embodiment shown in the drawings, the auxiliary bag 11 is located in parallel with the short side of the outer bag 1.

  The first inner bag 2 containing the first reaction solution as the main agent and the second inner bag 3 containing the second reaction solution as the curing agent are placed in the outer bag 1 in FIG. As shown in FIG. 9, the rail rail support pad 12 shown is placed on a concrete or wooden sleeper-like rail bearing body 13, on which a rubber pad 14 is placed, and this rubber pad 14. The rail 15 placed on the top is received. Specifically, when the rail support pad 12 is placed on the rail support 13, the rail 15 is in a floating state, and external pressure is applied to the rail support pad 12 so that the first and second inner bags 2 and 3 are applied. A portion having a narrow heat seal width is peeled off and opened to mix the first reaction solution and the second reaction solution, which are the contents, in the outer bag 1, and the rail rail support pad 12 is attached to the rail support body. Place on top of 13. Then, a rubber pad 14 is placed on the rail support pad 12, the rail 15 is lowered onto the rubber pad 14 to a predetermined height, and the rail 15 is fastened. By placing the rail 15 on the rubber pad 14, the rail support pad 12 is strongly pressed, and the unnecessary components of the compounds of the first reaction solution and the second reaction solution are used as a surplus as a side bag. 11, the passage between the outer bag 1 and the auxiliary bag 11 is appropriately closed with a clip or the like, and the first reaction solution and the second reaction solution in the rail rail support pad 12 After confirming that the curing of the compound has been completed, the auxiliary bag 11 is separated from the outer bag 1 with a scissors or a cutter. That is, between the rail support body 13 and the rail 15 via the rubber pad 14 depending on the thickness of the cured body of the compound of the first reaction solution and the second reaction solution in the rail support pad 12. Adhesive force is adjusted, and unnecessary components of the compounds of the first reaction solution and the second reaction solution are stored in the auxiliary bag 11 and separated from the outer bag 1. In addition, the compound of the said 1st reaction solution and the 2nd reaction solution comes to wrap the glass fiber cloth 10, and the intensity | strength of the hardening body of this compound will improve.

  By the way, the first reaction solution as the main agent housed in the first inner bag 2 is specifically a compound containing an epoxy group, a compound containing an isocyanate group, an unsaturated dibasic acid (glycol and anhydrous Compounds such as maleic acid and fumaric acid), compounds such as acrylic acid and acrylate, compounds containing silanol groups, compounds containing amino groups, and the like. Specific examples of the reaction solution 2 include compounds such as polyamines, acid anhydrides and polyphenols, compounds containing hydroxyl groups, compounds such as peroxides, compounds containing isocyanate groups, and compounds such as formaldehyde. Then, a second reaction solution that matches the first reaction solution stored in the first inner bag 2 is stored in the second inner bag 3, for example, the first inner bag 2. When a compound containing an epoxy group is used as the first reaction solution stored in the container, a compound such as polyamine, acid anhydride, or polyphenol is used as the second reaction solution stored in the second inner bag 3. When a compound containing an isocyanate group is used as the first reaction solution, a compound containing a hydroxyl group is used as the second reaction solution, and an unsaturated dibasic acid (glycol and maleic anhydride, When a compound such as fumaric acid) or a compound such as acrylic acid or acrylate is used, a compound such as a peroxide is used as the second reaction solution, and a compound containing a silanol group is used as the first reaction solution. A compound containing an isocyanate group is used as the second reaction solution, and a compound such as formaldehyde is used as the second reaction solution when a compound containing an amino group is used as the first reaction solution, The combination of the first reaction solution as the main agent housed in the first inner bag 2 and the second reaction solution as the curing agent housed in the second inner bag 3 is appropriately selected. is there. In short, it is sufficient if the first reaction solution as the main agent and the second reaction solution as the curing agent are mixed and resinized and cured.

  The ratio of the amount of the first reaction solution as the main agent and the amount of the second reaction solution as the curing agent varies depending on the type of the reaction solution, and the first inner bag 2 and the second inner solution correspond to the amount used. The size of the bag 3 is determined.

  Next, the second embodiment shown in FIG. 10 will be described. In the first embodiment, the first inner bag 2 in which the first reaction solution as the main agent is stored in the outer bag 1; Although the 2nd inner bag 3 in which the 2nd reaction solution was stored as a hardening agent is put, in the 2nd embodiment, as the 1st reaction solution or hardening agent as a main ingredient in the outer bag 1 The second reaction solution is directly stored, and only one inner bag 16 storing the second reaction solution as the curing agent or the first reaction solution as the main agent is stored in the outer bag 1. . Similarly to the first and second inner bags 2 and 3 of the first embodiment, the inner bag 16 used in the second embodiment can be opened by an external pressure. Other configurations are the same as those of the first embodiment.

  Although two embodiments have been described above, an inner bag containing a curing accelerator may be stored in the outer bag 1 as necessary. This inner bag can also be opened by external pressure in the same manner as the first and second inner bags 2 and 3 of the first embodiment. Moreover, you may put a hardening accelerator directly in the outer bag 1 in 1st Embodiment.

Furthermore, the inner bag as a method of opening by external pressure, other than the method of using a linear low density polyethylene and polybutene-1 as described above, a portion of the seal constituting the inner bag strength to weak For example, there is a method of opening the weak part by an external pressure, and the method is not limited to using linear low density polyethylene and polybutene-1.

It is a disassembled perspective view of the outer bag, the 1st inner bag, the 2nd inner bag, and the glass fiber cloth which comprise the railroad rail support pad in the 1st Embodiment of this invention. (A) is a plan view of the first inner bag, (B) is a plan view of the second inner bag. It is an expanded sectional view of the 1st and 2nd inner bag. It is explanatory drawing which shows the orientation of the resin. It is explanatory drawing which shows the combined state of the resin part of the linear low density polyethylene in the same heat seal part, and the resin part of polybutene-1. It is a principal part enlarged view of the seal edge of the heat seal part of the short side. It is a principal part enlarged view of the seal edge of the heat seal part of the same long side. It is a perspective view of the railroad rail support pad. It is a front view which shows the use condition of the railroad rail support pad. It is a disassembled perspective view of the outer bag, inner bag, and glass fiber cloth which comprise the railroad rail support pad in the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer bag 2 First inner bag 3 Second inner bag 4 Inner layer 5 Outer layer 6 Linear low density polyethylene resin 7 Polybutene-1 resin 8 Short side heat seal part 9 Long side heat seal part DESCRIPTION OF SYMBOLS 10 Glass fiber cloth 11 Sub bag 12 Rail rail support pad 13 Rail support body 14 Rubber pad 15 Rail 16 Inner bag

Claims (3)

A rail rail support pad interposed between a rail support body and a rail, comprising an outer bag made of a synthetic resin sheet as a material and an inner bag stored in the outer bag In the outer bag, the first reaction solution as the main agent or the second reaction solution as the curing agent is put, and the second bag as the curing agent is put in the inner bag provided in the outer bag. A first reaction solution is placed as a reaction solution or a main agent, and the inner bag is configured so that at least a part thereof is opened by an external pressure, and a detachable sub bag is provided in communication with the outer bag. Railway rail support pad characterized by that. A rail rail support pad interposed between a rail support and a rail, the outer bag made of a synthetic resin sheet as a material, and the first inner bag housed in the outer bag The first inner bag contains a first reaction solution as a main agent, and the second inner bag contains a second reaction solution as a curing agent. The first and second inner bags are configured such that at least a part thereof is opened by an external pressure, and a separable sub-bag is provided in communication with the outer bag. Rail support pad. 3. The railroad rail support pad according to claim 1, wherein a glass fiber cloth having a size substantially the same as the size of the inside of the outer bag is accommodated in the outer bag.

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