Adhesive crossing

Abstract

In adhesive crossings used in railway switches, the aim is to obtain a structure that strengthens the joint between the long and short nose rail sections constituting the nose rail, thereby improving durability. [Solution] In an adhesive crossing equipped with a nose rail formed by joining a long nose rail section 11 and a short nose rail section 12, the long nose rail section 11 and the short nose rail section 12 use special rails having a thickness that does not create a recess on the stomach side of the contact surface, the joining surface F of the long nose rail section 11 and the short nose rail section 12 is made into a continuous surface from the bottom to the top, and adhesive is applied to the joining surface F to bond them together. Furthermore, if necessary, bolt holes 70 are drilled between the long nose rail section 11 or the short nose rail section 12 and a splice material 50 placed on the outside, and bolts 81 are inserted through the bolt holes 70 and tightened with nuts 91 to apply pressure to the adhesive-coated joining surface F and firmly bond them together.

Description

Technical Field

[0003]

[0001] This invention relates to the structure of an adhesive crossing used in railway switches.

Background Art

[0002] As shown in FIGS. 4 and 5, the adhesive crossing according to the prior art uses the same type of rails with formed webs for the wing rails 1, 2 and the nose rail 10, which consists of the long nose rail part 11 and the short rail part 12. Thermosetting adhesives are respectively applied to the adhesive surface F between the long nose rail part 11 and the short nose rail part 12, the adhesive surfaces H on both sides between the long nose rail part 11 and the short nose rail part 12 and the spacer 20, and the adhesive surfaces H between the rails and the spacers 3, 4. Bolt holes 7 are drilled in the rails 1, 2, 11, 12, the spacers 3, 20, 4, and the attachment members 5, 6, and bolts 8 passing through the bolt holes 7 are tightened with nuts 9 to apply pressure to the adhesives for bonding. The structure of arranging a spacer between the long nose rail part and the short nose rail part is also adopted, for example, in the crossing rail (frog rail) described in Patent Document 1.

Prior Art Documents

Patent Documents

[0003] ​​​​​​​​​​​​​​​​Furthermore, the presence of a tiny gap J below the adhesive surface F on the upper side of the nose rail 10, which is impossible to inspect visually, meant that rainwater and dust could penetrate, potentially causing corrosion of the nose rail 10.

[0006] This invention was proposed in view of the above circumstances, and aims to provide a structure for adhesive crossings used in railway switches that can strengthen the joint between the long nose rail portion and the short nose rail portion constituting the nose rail, thereby improving durability. [Means for solving the problem]

[0007] To achieve the above objective, the present invention features an adhesive crossing having a nose rail (10) formed by joining a long nose rail portion (11) and a short nose rail portion (12), and is characterized by including the following configuration. The long nose rail section (11) and the short nose rail section (12) use special rails that have a thickness that does not create a recess on the stomach side of the contact surface. The joint surfaces (11a, 12a) of the long nose rail section (11) and the short nose rail section (12) are made into a continuous surface from the bottom to the top, a thermosetting adhesive or a room-temperature curing adhesive is applied to the joint surface (adhesive surface F), bolt holes (70) are drilled in the long nose rail section (11) and the short nose rail section (12) and the splice material (50) placed on the belly of the long nose rail section (11), bolts (81) are inserted through the bolt holes (70) and tightened with nuts (91) to apply pressure to the joint surfaces (11a, 12aa, H) and create a strong joint.

[0008] Furthermore, in the adhesive crossing described above, The device is characterized by the placement of spacing members (21, 31, 41) between a pair of wing rails (1, 2) and a long nose rail section (11) and a short nose rail section (12), respectively, the application of a thermosetting adhesive or a room-temperature curing adhesive to the joint surface (H), the drilling of bolt holes (70) between the wing rails and splice members (51, 52) placed on the outside of each wing rail, and the insertion of bolts (82) through the bolt holes (70) and tightening with nuts (92) to apply pressure to the joint surface (H) and create a strong bond. [Effects of the Invention]

[0009] According to the adhesive crossing structure of this invention, the thickness of the long nose rail portion (11) and the short nose rail portion (12) is such that no recess is created on the contact surface side at the belly, and the joining surfaces (11a, 12a) of the long nose rail portion (11) and the short nose rail portion (12) are made into a continuous surface from the bottom to the top, thereby increasing the area of ​​the joining surface and allowing for strong bonding when sufficient pressure is applied.

[0010] Furthermore, by providing joints (11a, 12a) where the long nose rail section (11) and the short nose rail section (12) are directly joined, it becomes unnecessary to use a spacer between the long nose rail section (11) and the short nose rail section (12), thereby suppressing corrosion that cannot be visually inspected near the joint surface and improving the durability of the nose rail (10). [Brief explanation of the drawing]

[0011] [Figure 1] This is a schematic plan view illustrating the adhesive crossing according to the present invention. [Figure 2] Figure 1 is an explanatory diagram of the cross-section along line XX in the adhesive crossing. [Figure 3] Figure 1 is an explanatory diagram of the YY line crossover in the adhesive crossing. [Figure 4] This is a schematic plan view illustrating a conventional adhesive crossing. [Figure 5] Figure 4 is an explanatory diagram of the ZZ line crossover in the adhesive crossing. [Modes for carrying out the invention]

[0012] An example of an embodiment of the adhesive crossing of the present invention will be described with reference to the drawings.

[0013] As shown in the plan view of Figure 1, the adhesive crossing is configured with a nose rail 10 laid on one side (the upper side in Figure 1) of a pair of wing rails 1 and 2. The nose rail 10 is formed by arranging a short nose rail section 12 with its inclined side abutting against a long nose rail section 11, which has a wedge-shaped inclined edge at its tip in a plan view, and the long nose rail section 11 and the short nose rail section 12 together form a V shape.

[0014] As shown in the cross-sectional view of line XX in Figure 1, the adhesive crossing is fixed to the long nose rail section 11 and the short nose rail section 12 by bolts 81 and nuts 91 that pass through bolt holes 70, 70 formed in the rails.

[0015] The long nose rail section 11 and the short nose rail section 12 use special rails that have a thickness that does not create a recess on the contact surface side in the abdominal area. The contact surfaces of the long nose rail section 11 and the short nose rail section 12 have vertical joint surfaces 11a and 12a formed on the contact surface side, and adhesive is applied to the entire joint surface (adhesive-coated surface F) to join them. Furthermore, a splice material 50 is placed in a recess on the outer side of the long nose rail section 11, and these are connected by bolts 81 and nuts 91 that pass through bolt holes 70. The long nose rail section 11 and the splice material 50 are then fixed together by applying adhesive (adhesive application surface H) between them. In this example, the splice material 50 is placed on the outside of the long nose rail section 11, but the splice material may also be placed on the short nose rail section 12 side by cutting its body to create the same shape (recess) as the body on the outside of the long nose rail section.

[0016] At the adhesive crossing part at a position different from that in FIG. 2, as shown in FIG. 3 (cross-sectional view taken along the line Y-Y in FIG. 1), spacers 31, 21, 41 are sandwiched between the long nose rail section 11 and the short nose rail section 12, extension materials 51, 52 are arranged on the outer sides of the respective wing rails 1, 2, and these are fixed by connecting them with bolts 82 and nuts 92 that penetrate bolt holes.

[0017] That is, on the connection surfaces between the extension material 51 and the wing rail 1, between the wing rail 1 and the spacer 31, between the spacer 31 and the long nose rail section 11, between the long nose rail section 11 and the spacer 21, between the spacer 21 and the short nose rail section 12, between the short nose rail section 12 and the spacer 41, between the spacer 41 and the wing rail 2, and between the wing rail 2 and the extension material 52 in FIG. 3, adhesives are respectively applied (adhesive application surfaces H), and for bolts 82 that penetrate the bolt holes 70 (rail side) provided on the extension materials 51, 52 and the bolt holes 71, 72, 73 (spacer side) provided on the wing rail 1, spacer 31, long nose rail section 11, spacer 21, short nose rail section 12, spacer 41, wing rail 2, and extension material 52, they are tightened with nuts 92 from the outer sides of the extension materials 51, 52, thereby applying pressure to the connection surfaces (adhesive application surfaces H) where the adhesives are applied, and firmly joining the crossing structure including the long nose rail section 11 and the short nose rail section 12.

[0018] As the above-mentioned adhesive, in addition to the thermosetting adhesives that have been used conventionally, room temperature curable adhesives can be used. By using room temperature curable adhesives, the fixation work can be simplified.

[0019] In the above example, adhesives are respectively applied (adhesive application surfaces H) between the extension material 51 and the wing rail 1 and between the wing rail 2 and the extension material 52, but for this part, adhesives do not necessarily need to be applied in order to simplify the work.

[0020] According to the adhesive crossing described above, the adhesive crossing has a thickness that prevents the formation of recesses on the contact surface side at the belly of the long nose rail portion 11 and the short nose rail portion 12. By making the joint surface of the long nose rail portion 11 and the short nose rail portion 12 a continuous surface from the bottom to the top, the area of ​​the joint surface is increased compared to the conventional example, enabling strong adhesion with adhesive and increasing the resistance to impact from wheels passing over the joint.

[0021] Furthermore, at the joint between the long nose rail 11 and the short nose rail section 12 in Figure 2, it is no longer necessary to use a rail web spacing material 20 as in the conventional example (Figure 5). This prevents corrosion that cannot be visually inspected from occurring near the contact surface between the long nose rail section 11 and the short nose rail section 12, and also prevents rainwater, dust, and other debris from entering the gap remaining near the joint surface, thereby improving durability. [Explanation of Symbols]

[0022] 1 Wing Rail 2 Wing Rails 3 spacing material 4 spacing material 5 Adhesive material 6 Adhesive material 7 bolt holes 8 volts 9 nuts 10 Nose Rails 11 Long nose rail section 11a Joint surface 12 Short nose rail section 12a Joint surface 20 spacing material 21, 31, 41 spacing material 50 Attachments 51,52 Attachments 70 bolt holes 71, 72, 73 Bolt holes 81,82 volts 91,92 nuts F Adhesive application surface (joining surface) H Adhesive application surface (connecting surface)

Claims

1. In an adhesive crossing equipped with a nose rail formed by joining a long nose rail section and a short nose rail section, The aforementioned long nose rail section and the aforementioned short nose rail section use a special rail having a thickness that does not create a recess on the stomach side of the contact surface. An adhesive crossing characterized in that the joining surfaces of the long nose rail portion and the short nose rail portion are made into a continuous surface from the bottom to the top, and adhesive is applied to the joining surfaces to bond them together.

2. The adhesive crossing according to claim 1, wherein bolt holes are drilled between a pair of wing rails and a splice material positioned on the outside of the long nose rail portion or the short nose rail portion, and bolts are inserted through the bolt holes and tightened with nuts, thereby applying pressure to the adhesive-coated connecting surface to firmly join them.

3. The adhesive crossing according to claim 1, wherein a spacing material is placed between a pair of wing rails, a long nose rail section and a short nose rail section, and adhesive is applied to the connecting surfaces of each section, bolt holes are drilled between the wing rails and splice material placed on the outside of each wing rail, and bolts are inserted through the bolt holes and tightened with nuts, thereby applying pressure to the adhesive-coated connecting surfaces to firmly join them.

4. The adhesive crossing according to claim 2, wherein a spacing material is placed between a pair of wing rails, a long nose rail section and a short nose rail section, and adhesive is applied to the connecting surfaces of each section, bolt holes are drilled between the wing rails and splice material placed on the outside of each wing rail, and bolts are inserted through the bolt holes and tightened with nuts, thereby applying pressure to the adhesive-coated connecting surfaces to firmly join them.

5. The adhesive crossing according to any one of claims 1 to 4, wherein the adhesive is a room-temperature curing adhesive.

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