JP3567161B2 - Adhesive force adjustable type height adjustment packing - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a packing for mounting or adjusting a rail in a correct position on a railway track.
[0002]
[Prior art]
In order for a train to travel safely on rails, the rails must be held in the correct position. In particular, in the case of a train running at high speed, strict installation accuracy of the rail is required. For this reason, a ballast ballast may be used for the track, but the rail is held by grinding the ballast ballast. On the other hand, in a track that does not use a ballast ballast, packing is interposed between a rail and a rail support such as a sleeper or a slab plate to hold the rail.
[0003]
This type of packing is required to have the following performance.
[0004]
(1) Flat, continuous and fine height adjustment is possible, not simply uniform height adjustment.
[0005]
(2) Do not move due to the movement of the rail and the rail support that supports the rail, or the dynamic load acting on the rail as the train passes.
[0006]
Conventionally, as this type of packing, a solid packing made of a steel plate, a resin plate, or the like is used.
[0007]
However, the solid packing cannot achieve the first performance because it is difficult to adjust the height slightly. Further, since the frictional resistance with the sleeper is small, it is easy to move, and the second performance cannot be realized.
[0008]
Then, in order to realize the first performance, packing (variable packing) for injecting resin into the bag from the injection port 2 has been devised. The variable packing includes a film-type variable packing 10 (see FIG. 6) and a resin seeping-type variable packing 20 (see FIG. 7). In general, the former is made of a nylon-polyethylene laminated film, and the latter is a permeable sheet. Certain polyester nonwovens are known.
[0009]
However, the former is easy to move because the frictional resistance with the sleeper is small, although measures are taken to fix the installation position, such as formation of ribs. That is, the second performance cannot be realized.
[0010]
Therefore, interposing a member that resists a lateral pressure caused by a train load, for example, under a tie plate, has a large adverse effect on safety.
[0011]
On the other hand, the latter achieves the second performance, which is a disadvantage of the former. That is, the filled resin exudes from the holes on the surface of the packing and becomes an adhesive.
[0012]
Therefore, it is preferable to use it in a place where both height adjustment and an adhesion effect are expected, for example, between a slab or a sleeper and a tie plate.
[0013]
[Problems to be solved by the invention]
However, the resin seeping type variable packing 20 may adhere to the rail support 4 if the adhesive force is too strong. If it adheres, the rail support may be broken when the resin seeping type variable packing 20 is removed, and for example, the workability of maintenance work may be reduced. Further, since the material is made of non-woven fabric, the packing strength is weak, and if too much resin is added, the packing may burst and the workability of maintenance work may be reduced.
[0014]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a rail height adjustment packing which has a simple configuration, enables adjustment of an adhesive force to a rail support, and improves safety and workability.
[0015]
[Means for Solving the Problems]
The gist of the adhesion-adjustable type height-adjustment packing according to claim 1 is a packing that is interposed between a rail and a rail support to fill a gap formed between the rail and the rail support . the packing, along with a bag body having an inlet resin having fluidity and cold-curing is injected, a part of either or both sides of the upper surface or lower surface of the bag, the resin can exude It is characterized by providing a bleeding part.
According to a second aspect of the present invention, there is provided an adhesive strength-adjustable type height-adjustment packing according to the first aspect, wherein the seepage portion has a hole through which the resin can exude. It is characterized by comprising a conductive sheet.
The purpose of the adhesive force adjustable type height adjustment packing according to claim 3 is that, in the adhesive force adjustable type height adjustment packing according to claim 1 or 2, the seepage portion is provided at a plurality of locations. Features.
The purpose of the adhesive force-adjustable type height adjustment packing according to claim 4 is that in the adhesive force-adjustable type height adjustment packing according to any one of claims 1 to 3, a reinforcing fiber is provided inside the bag body. Is inherent.
The purpose of the adhesive force-adjustable type height adjustment packing according to claim 5 is that in the adhesive force-adjustable type height adjustment packing according to claim 4, the bag body is formed by welding peripheral edges of two synthetic resin films. And wherein the welded portion does not include the reinforcing fiber.
The purpose of the adhesive force adjustable type height adjustment packing according to claim 6 is that in the adhesive force adjustable type height adjustment packing according to claim 5, a part of the reinforcing fiber is any one of the two synthetic resin films. It is characterized by being welded to one of the films.
The purpose of the adhesion-adjustable type height-adjustment packing according to claim 7 is that in the adhesion-adjustable type height-adjustment packing according to claim 6, a welded portion between the reinforcing fiber and the synthetic resin film is provided at the injection port. It is characterized by being provided in the vicinity.
The purpose of the adhesive force-adjustable type height-adjustment packing according to claim 8 is that in the adhesive force-adjustable type height-adjustment packing according to claim 4, the bag body is formed by welding peripheral edges of two synthetic resin films. And wherein the welded portion includes an edge of the reinforcing fiber.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
The gist of the present invention is to improve safety and workability by harmonizing contradictory elements such as fixability and peelability of the variable packing.
[0017]
Hereinafter, an embodiment according to the present invention will be described in detail with reference to FIGS. 1 to 5 and FIGS. FIG. 1 shows a lower surface 1a of a height-adjustment packing 1 in which an adhesive force is adjustable according to a first embodiment of the present invention.
[0018]
The height-adjustable packing 1 of which the adhesive force is adjustable is a substantially rectangular bag made of a nylon polyethylene laminated film. As shown in FIG. 1, an inlet 2 into which a resin having fluidity and room-temperature curability is injected is provided at one corner, and the inlet 2 is cylindrical and communicates with the inside of the bag. An exhaust port 2a provided at a position diagonal to the injection port 2 discharges air therein when the resin is injected into the bag, and leaks excess resin to the outside when the bag is filled with the resin. It is configured to
[0019]
As shown in FIG. 2, the lower surface 1a of the adhesive force adjustable type height adjustment packing 1 has a lower surface 1a provided on a rail support 4 which is a rail support, and rises from the periphery of the lower surface 1a to form an upper surface 1b. Are formed and come into contact with the rubber track pad 6. A rail 7 serving as a track is placed on the track pad 6.
[0020]
A rectangular transparent sheet 3 is welded in a rectangular shape substantially at the center of the lower surface 1a of the adhesive force adjustable type level adjusting packing 1. The permeable sheet 3 is made of a polyester nonwoven fabric having minute holes, and is configured so that the filled resin leaks out of the holes.
[0021]
FIG. 3 shows the upper surface 1b of the height-adjustable packing 1 of the second embodiment of the present invention. The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
[0022]
A rubber track pad 6 is interposed between the height-adjustable packing 1 of the present invention and the rail support 4. An L-shaped permeable sheet 3 is welded to the upper surface 1b of the adhesive force-adjustable height-adjusting packing 1. The permeable sheet 3 has a long side and a short side of the adhesive force-adjustable height-adjusting packing 1. And are arranged in parallel. The broken line in the drawing indicates the outer shape of the rubber track pad 6 that contacts the upper surface 1b. That is, when the resin exuding from the adhesive force-adjustable type height adjustment packing 1 adheres, the resin may melt, and since the track pad 6 and the permeable sheet 3 are separated, the resin may not adhere to the track pad 6. Absent.
[0023]
FIG. 4 shows a height-adjustable packing 1 with an adjustable adhesive force according to a third embodiment of the present invention. The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
[0024]
The adhesive force-adjustable type height-adjusting packing 1 is mounted between the rail support 4 and the tie plate 8, and a part of the lower surface 1 a in contact with the rail support 4 and a part of the upper surface 1 b in contact with the tie plate 8 are exuded. A certain permeable sheet 3 is provided. The tie plate 8 is provided with a projection 5 projecting upward, and the track pad 6 and the lower part of the rail 7 are fitted and positioned. Thereby, strict installation position accuracy of the rail can be realized.
[0025]
FIG. 8 shows a height-adjustable packing 1 with an adjustable adhesive force according to a fourth embodiment of the present invention. FIG. 9 is a vertical sectional view taken along the line aa in FIG. 8. The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
[0026]
The adhesion-adjustable-type height-adjustment packing 1 is a bag body in which the lower surface 1a and the upper surface 1b are each formed of a synthetic resin film, and the peripheries of the two synthetic resin films are welded, and the welded portions are 9a and 9b. Shown as Reinforcing fibers 11 (shown by oblique dashed lines in FIG. 8) are provided inside the bag. The reinforcing fibers 11 are made of, for example, glass cloth. If the reinforcing fibers 11 are included in the welded portions 9a and 9b, the welding force is weakened, and the bag may be ruptured during resin injection. Therefore, it is preferable that the welded portions 9a and 9b do not include the reinforcing fibers 11. . As a result, the reinforcing fibers 11 are integrated with the resin, so that a higher-strength adhesive force-adjustable type level-adjusting packing 1 can be obtained. In addition, a part of the reinforcing fiber 11 is welded to one of the inner surfaces of the synthetic resin film by a welding portion 12. Thereby, it can prevent that the reinforcing fiber 11 moves at the time of resin injection. Further, when the welded portion 12 is provided near the injection port 2, the injection of the resin is not hindered. When the welded portions 9a and 9b are configured to include the edge of the reinforcing fiber 11, the configuration is simplified without the need for the welded portion 12, and the movement of the reinforcing fiber 11 can be prevented.
[0027]
As described above, the adhesive force-adjustable type height-adjustment packing of the present invention has a simple structure in which the resin-exuding type variable packing is provided with the permeable sheet in the film-type variable packing, but it is incompatible with the permeable sheet. Since it adheres to the contacting object, safety can be achieved. According to the construction site conditions, it is tightly integrated with the rail support. Therefore, for example, when a permeable sheet is provided on the lower surface, it is preferable to use it between the track pad and the tie plate in the movable section of the long rail. In the case where the permeable sheets are provided on the upper surface and the lower surface, it is preferable to use the tie plate on a track in which the lateral pressure resistance must be reinforced. In addition, since the resin excessively exudes from the permeable sheet 3, the packing does not burst. That is, workability can be improved.
[0028]
In addition, in the height adjustment packing of the present invention, a gap is generated between the rail and the rail support body at an arbitrary position as a result of the track adjustment, and after the adhesive-adjustable type variable packing is inserted into the gap. Insert resin. That is, the gap is filled with the adhesive-adjustable type variable packing, and the gap of about 3 mm to 30 mm can be filled.
[0029]
Next, factors affecting the adhesive force due to resin seepage will be described.
[0030]
Commonly considered factors include the following.
(1) Material of the object to be adhered, surface roughness of the object to be adhered (2) Permeability of bag of height-adjustment packing (3) Viscosity of resin, material (4) Adhesion area depending on size of bag [0031]
Since (1) and (4) are inevitably determined by the place of attachment and the size of the bag, in order to adjust the adhesion, change either (2) and / or (3). I have to. However, it is complicated to change the material of the height adjustment packing and the injected resin for each construction, and even if it is performed, it is uneconomical.
[0032]
Therefore, in order to solve these problems, attention was paid to changing the attachment area regardless of the size of the bag. The adhesive force-adjustable type height adjustment packing is manufactured by previously determining the adhesive strength and changing the area of the permeable sheet 3 based on the correlation between the adhesive strength obtained from experience and the area of the permeable sheet 3. For example, as shown in FIG. 5, when the same permeable sheet 3 is provided at two places, if the resin that seeps out of the permeable sheet 3 is the same, the adhesive force is doubled. Thus, by changing the area of the permeable sheet 3, the strength of the adhesive force can be adjusted. Furthermore, if the transparent sheets 3 having different transmittances are provided in combination, the strength of the adhesive force can be arbitrarily adjusted in view of the amount of resin seeping out.
[0033]
In general, the attached height-adjustable packing with an adjustable adhesive force can be removed as soon as an impact or heat is applied to the permeable sheet 3. Therefore, in consideration of workability, a position where the impact is easily applied or heated is taken into consideration. It is preferable to provide the permeable sheet 3 on the base.
[0034]
For this reason, security operations are usually performed at night between the last train and the first train. Therefore, since the work must be performed in a short time, the work time can be shortened if the adhesion-adjustable type height adjustment packing is easily removed.
[0035]
The above embodiment is merely an example, and it goes without saying that the main constituent elements can be appropriately changed according to the design requirements or the usage environment of the adhesive force adjustable type height adjustment packing.
[0036]
【The invention's effect】
As described above, according to the adhesion-adjustable type height-adjustment packing according to claim 1 of the present invention, even if there is security work during the night between the last train and the first train, the strength of the adhesion is adjusted. Since it can be easily removed, workability is improved.
According to the adhesive-adjustable type height-adjustment packing according to claim 2 of the present invention, in the adhesive-adjustable type height-adjusting packing according to claim 1, a permeable sheet is used for the seepage portion and the sheet is excessively inserted. Since the resin exudes, the resin does not burst and the workability is improved.
According to a third aspect of the present invention, there is provided an adhesive force-adjustable type height adjustment packing according to the first or second aspect, wherein the exudation portions are provided at a plurality of locations. Therefore, the adhesive force can be arbitrarily changed.
According to the adhesive force-adjustable type height adjustment packing according to claim 4 of the present invention, in the adhesive force-adjustable type height adjustment packing according to any one of claims 1 to 3, the bag body has Since the reinforcing fibers are present, the strength can be further increased.
According to the adhesive-adjustable type level-adjusting packing according to claim 5 of the present invention, in the adhesive-adjustable type level-adjusting packing according to claim 4, the bag body welds the peripheral edges of the two synthetic resin films. Since no reinforcing fibers are contained in the welded portion, the welding force is increased, and the possibility of the bag body exploding during resin injection can be prevented.
According to the adhesive force-adjustable type level-adjusting packing according to claim 6 of the present invention, in the adhesive force-adjustable type level-adjusting packing according to claim 5, a part of the reinforcing fibers is formed of two synthetic resin films. Since it is welded to either one of the films, it is possible to prevent the reinforcing fibers from moving during resin injection.
According to the adhesive strength-adjustable type height-adjustment packing according to claim 7 of the present invention, in the adhesive force-adjustable type height-adjustment packing according to claim 6, the welded portion between the reinforcing fiber and the synthetic resin film is formed by the above-mentioned note. Since it is provided near the inlet, it does not hinder resin injection.
According to the adhesion-adjustable type level-adjustment packing according to claim 8 of the present invention, in the adhesion-adjustable type level-adjustment packing according to claim 4, the bag body welds the peripheral edges of the two synthetic resin films. Since the welded portion includes the edge of the reinforcing fiber, it is possible to prevent the reinforcing fiber from moving at the time of resin injection without separately providing a welded portion between the reinforcing fiber and the synthetic resin film.
[Brief description of the drawings]
FIG. 1 is a plan view showing an adhesion-adjustable type height adjustment packing according to Embodiment 1 of the present invention.
FIG. 2 is a side view showing an adhesive force-adjustable level adjusting packing according to the first embodiment of the present invention.
FIG. 3 is a plan view showing a height-adjustable packing with an adjustable adhesive force according to a second embodiment of the present invention.
FIG. 4 is a side view showing an adhesion-adjustable type height adjustment packing according to Embodiment 3 of the present invention.
FIG. 5 is a diagram illustrating a correlation between an adhesive force and an area of a permeable sheet.
FIG. 6 is a plan view showing a conventional adhesive-adjustable type level adjusting packing.
FIG. 7 is a plan view showing a conventional height-adjustment packing capable of adjusting an adhesive force.
FIG. 8 is a plan view showing an adhesion-adjustable height-adjustment packing according to a fourth embodiment of the present invention.
9 is a vertical sectional view taken along a line aa in FIG. 8;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Height adjustable packing 1a Lower surface 1b Upper surface 2 Inlet 2a Exhaust port 3 Permeable sheet 4 Rail support 5 Projection 6 Track pad 7 Rail 8 Tie plate 9a Welding part of synthetic resin film 9b Welding of synthetic resin film Part 10 Conventional film-type variable packing 11 Reinforcement fiber 12 Welding part 20 between reinforcing fiber and synthetic resin film 20 Conventional resin seeping-type variable packing

Claims (8)

A packing that is interposed between a rail and a rail support to fill a gap formed between the rail and the rail support ,
The packing, along with a bag body having an inlet resin having fluidity and cold-curing is injected, a part of either or both sides of the upper surface or lower surface of the bag, the resin can exude Adhesive-adjustable type height-adjustment packing characterized by providing a bleeding part. The height adjustment packing according to claim 1, wherein the exudation portion is formed of a permeable sheet having holes through which the resin can exude. The height adjusting packing according to claim 1 or 2, wherein the seepage portion is provided at a plurality of locations. The height-adjustable packing with adjustable adhesive force according to any one of claims 1 to 3, wherein a reinforcing fiber is present inside the bag body. The height adjusting device according to claim 4, wherein the bag body is formed by welding peripheral edges of two synthetic resin films, and the welded portion does not include the reinforcing fiber. Packing. The height adjustable packing according to claim 5, wherein a part of the reinforcing fiber is welded to one of the two synthetic resin films. The height-adjustable packing according to claim 6, wherein a welded portion between the reinforcing fiber and the synthetic resin film is provided near the inlet. The adhesive force-adjustable die according to claim 4, wherein the bag body is formed by welding peripheral edges of two synthetic resin films, and the welded portion includes an edge of the reinforcing fiber. Height adjustment packing.

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