Railway base plate

Abstract

A railway tie plate is disclosed having a generally prismoid that includes a field-side flange and an inter-rail-side flange connected by an intermediate portion. The middle part comprises a rail seat used for positioning a railway steel rail. The field-side flange includes a first retention device receiving portion, such as a first hole, configured to receive a first retention device, such as a spike. The first retaining device is configured to secure a railroad rail to a rail seat. The field-side flange also includes a fixed retainer. The fixed retainer is an integral part of the railway base plate. The fixed retainer extends away from the bottom surface of the railroad tie plate in the thickness direction and toward the inter-rail side, and is suspended above the rail seat. The fixed retainer is configured to prevent the railway rail from moving in the thickness direction.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to railways, and in particular to railway pads that are secured to railway ties to support and position rails relative to the railway ties. BACKGROUND

[0002] In constructing a railway, parallel rails are typically connected to support members known as "railway ties" (or in some contexts as "sleeper" or "crosstie"). The railway ties can be arranged perpendicular to the rails such that each railway tie can support two rails. The space between the parallel rails forms the track's gage (also referred to as "track gauge").

[0003] In some cases, the rails are attached to the railway ties by driving one or more spikes (also referred to as "rail spikes", "railway spikes") into the railway ties, each of the one or more spikes having a head or lug to overlap a flange portion of the rail. Sometimes, a plate of various shapes, known as a "railway pad", also referred to in some contexts as a "railway rail pad" or "pad", is inserted between the rail and the railway tie.

[0004] When the rail is installed on the pad, the rail will be secured and will not move relative to the pad. SUMMARY

[0005] A railway pad (or interchangeably referred to as a "pad") is disclosed, which includes a generally prismatic body extending between a field side and a gage side along a width direction of the pad. A field side flange located at the field side extends from a pad bottom surface along a thickness direction of the pad. A gage side flange located at the gage side extends from the pad bottom surface along the thickness direction of the pad. An intermediate portion extends between the field side flange and the gage side flange. The intermediate portion includes a rail seat for receiving a railway rail.

[0006] At least one of the field side flange and the gage side flange includes a securing portion configured to receive a securing device configured to secure the pad to a railway tie. The field side flange includes a first retaining device receiving portion configured to receive a first retaining device configured to secure the railway rail to the rail seat.

[0007] The field side flange includes a securing retainer that is an integral part of the pad. The securing retainer extends away from the pad bottom surface in the thickness direction and towards the gage side, and the securing retainer overhangs above the rail seat. The securing retainer is configured to prevent movement of the railway rail in the thickness direction.

[0008] The above paragraph is provided as a general introduction only and is not intended to limit the scope of the present disclosure claimed. The described embodiments and further objects, features and advantages will become better understood from the detailed description, presented in conjunction with the accompanying drawings, wherein: BRIEF DESCRIPTION OF DRAWINGS

[0009] The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which like reference characters refer to like parts throughout the figures, and in which:

[0010] Figure 1 is a perspective view of a railway tie plate according to an embodiment;

[0011] Figure 2 is a front view of a railway tie plate according to the embodiment shown in Figure 1

[0012] Figure 3 is a rear view of a railway tie plate according to the embodiment shown in Figure 1

[0013] Figure 4 is a side view of a railway tie plate according to the embodiment shown in Figure 1 corresponding to the viewing angle A shown in Figure 2

[0014] Figure 5 is a side view of a railway tie plate according to the embodiment shown in Figure 1 corresponding to the viewing angle B shown in Figure 2

[0015] Figure 6 is a top view of a railway tie plate according to the embodiment shown in Figure 1

[0016] Figure 7 is a bottom view of a railway tie plate according to the embodiment shown in Figure 1

[0017] Figure 8 is a front sectional view of a railway tie plate according to the embodiment shown in Figure 1 corresponding to the line C-C shown in Figure 6

[0018] Figure 9 is a front sectional view of a railway tie plate according to the embodiment shown in Figure 1 corresponding to the line C-C shown in Figure 6 DETAILED DESCRIPTION

[0019] ​​​​​​​​The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0020] refer to Figures 1 to 8 According to an embodiment, the pad 10 has a generally prismatic shape with a length direction L, a width direction W, and a thickness direction T. The pad 10 extends along the width direction W between a field side edge 104 and an inter-rail side edge 106. The field side edge 104 is to be installed on the field side (facing outward) of the railway track. The inter-rail side edge 106 is to be installed on the inter-rail side (facing the space between the rails) of the railway track.

[0021] The backing plate 10 includes a middle portion 110, a field side flange 140 and a rail side flange 160. The middle portion 110 includes a rail seat 112 on which a railway rail 20 (e.g. Figure 9 As shown in FIG. , the length of the rail extending in the direction of train travel along the rail is oriented along the length L of the tie plate 10. When the tie plate 10 is installed, the railroad sleeper (or railroad ties) can be positioned against the bottom surface 102. In some embodiments, when the tie plate 10 is installed, an intermediate substrate, such as a liner or spacer, can be inserted between the bottom surface 102 and the railroad sleeper (or railroad ties).

[0022] The overall length of the backing plate 10 may be 6 to 9 inches, for example, approximately Inches; the total width of the backing plate 10 can be 12 to 16 inches, for example, about 14 inches; the total height of the backing plate 10 in its thickness direction can be 1.5 inches to 2.5 inches, for example, about 2 inches. The width of the field side flange 140 can be 2 inches to 5 inches, for example, about Inches; the width of the middle portion 110 may be 5 inches to 7 inches, for example, about The width of the rail side flange 160 may be 3 inches to 6 inches, for example, about inch.

[0023] The surface shape of the rail seat 112 may correspond to the bottom surface shape of the rail 20 to be mounted thereon. In some embodiments, the rail seat 112 may be substantially flat. In other embodiments, the rail seat 112 may have a curvature. In some embodiments, the rail seat 112 may be inclined at an angle from the field side (outer side) to the rail side (inner side) along the width direction W. In one embodiment, the rail seat 112 may be inclined at a ratio of 1:40. In other embodiments, the rail side (inner side) of the rail seat 112 may be approximately 1 / 4 thicker than the field side (outer side) of the rail seat 112. inches to inches, e.g. approx. For example, the rail seat 112 can have a thickness of about 1.5 inches on the field side (outside) of the rail seat 112. In some embodiments, the rail seat 112 can be inclined so that the rail 20 placed on the rail seat 112 is inclined toward the field side (outside) of the railroad track when the tie plate 10 is installed between the rail 20 and the railroad tie (sleeper). For example, the rail seat 112 can have a thickness of about 1.5 inches on the field side (outside) of the rail seat 112. In some embodiments, the rail seat 112 can be inclined so that the rail 20 placed on the rail seat 112 is inclined toward the field side (outside) of the railroad track when the tie plate 10 is installed between the rail 20 and the railroad tie (sleeper).

[0024] In various embodiments, the tie plate 10 can be sized to accommodate a rail flange having a width of between 5 inches and 7 inches. In one particular embodiment, the tie plate 10 can be sized to accommodate a 6 inch rail. In other embodiments, the tie plate 10 can be sized to accommodate a 5.5 inch rail. In still other embodiments, the tie plate 10 can be sized to accommodate a 100-8 base rail.

[0025] The flange 140 is located on the field side (outside) of the tie plate 10 along the width direction W. The flange 140 can be referred to as a "field side flange." The flange 160 is located on the rail side (inside) of the tie plate 10 along the width direction W. The flange 160 can be referred to as a "rail side flange." Each of the flanges 140 and 160 can include one or more spike holes 114. The spike holes 114 can be generally rectangular in shape, such as square, to accommodate railroad spikes to be driven through each of the spike holes 114 into the railroad tie (sleeper).

[0026] In some embodiments, each of the flanges 140 and 160 can include one or more screw holes (not shown) in addition to or in lieu of the spike holes 114. The screw holes can be generally circular in shape to accommodate railroad screws to be screwed through each of the screw holes into the railroad tie (sleeper). In some embodiments, only spikes or only screws can be used. In other embodiments, both spikes and screws can be used. In some embodiments, spikes can be inserted through the spike holes 114 as an initial means of securing the tie plate 10 to the railroad tie (sleeper), and screws can be inserted in a subsequent securing step. In various embodiments, the insertion and tightening of one or more spikes or screws can be done manually or by an automated machine.

[0027] ​The nail holes 114 and screw holes are non-limiting examples of fixing portions. In other embodiments, the fixing portion configured to receive a fixing device for fixing the tie plate to the railroad sleeper may include one or more of a hole, a slot, a groove, a cavity, a bolt hole, or any other form suitable for interfacing with the fixing device for fixing the tie plate to the railroad sleeper. Railroad spikes and screws are non-limiting examples of fixing devices. Corresponding to each embodiment, the fixing device for fixing the tie plate to the railroad sleeper may include one or more of a spike, a screw, a pin, a staple, a wedge, or any other form suitable for interfacing with the fixing portion and the railroad sleeper to fix the tie plate to the railroad sleeper.

[0028] The side length of the nail hole 114 can be 0.5 inches to 1.5 inches, for example, about Inch, the screw hole diameter can be 0.5 inch to 1.5 inches, such as about 1 inch.

[0029] The thickness of the field side flange 140 at the field side edge 104 may be 0.25 inches to 1 inch, for example, about The rail side flange 160 may have a thickness of 0.25 to 1 inch at the rail side edge 106, for example, about In some embodiments, the field-side flange 140 may have a uniform thickness t1. In other embodiments, the thickness of the flange 140 may vary. In some embodiments, the rail-side flange 160 may have a uniform thickness t2. In other embodiments, the thickness of the flange 160 may vary. In some embodiments, the thickness t1 may be substantially equal to the thickness t2. In other embodiments, the thickness t1 may be different from the thickness t2.

[0030] According to some embodiments, the field side surface 104 may be substantially vertical, forming a stepped edge. In some embodiments, the inter-track side surface 106 may be substantially vertical, forming a stepped edge. In other embodiments, the side surfaces 104, 106 may be inclined.

[0031] In some embodiments, the field side flange 140 may include a flat surface 141 extending along the field side edge 104 between the first edge 108a and the second edge 108b in the length direction L. In some embodiments, the rail side flange 160 may include a flat surface 161 extending along the rail side edge 106 between the first edge 108a and the second edge 108b.

[0032] Still refer to Figure 1 The field-side flange 140 may include a field-side shoulder 144 extending upward from the flange 140 along the thickness direction T. The term "upward" herein means "away from the bottom surface 102".

[0033] The field-side shoulder 144 may further include a field-side rib 148 that further extends upward along the thickness direction T from the field-side shoulder 144 .

[0034] The inclination of the rib 148 may be higher than the inclination of the other parts of the shoulder 144. Figure 2 As shown, there may be a curved surface with a radius r4 between the inclined upper surface of the rib 148 and the upper surface of the rest of the shoulder 144, where r4 is 0.75 inches to 1.25 inches, for example, about 1 inch. The interface between the top of the rib 148 and the inclined upper surface of the rib 148 may be a curved surface with a radius r5, where r5 is inches to 0.5 inches, for example, about inch.

[0035] The field-side rib 148 may include a sidewall 148 a extending upward from the rail seat 112 in the thickness direction T and extending along the length direction L from the first edge 108 a to the second edge 108 b .

[0036] When the railroad rail 20 is placed on the rail seat 112, the side wall 148a can be the railroad rail 20 ( Figure 9 ) provides support on the field-side (outside) edge.

[0037] The field side shoulder 144 may extend in the thickness direction T inches to 0.75 inches, for example, about inch.

[0038] The field side ribs 148 may extend in the thickness direction T from 0.125 inches to 0.75 inches, for example, about inch.

[0039] The height of the side wall 148a in the thickness direction T may be 0.125 inches to 0.75 inches, for example, about inch.

[0040] The field side flange 140 may further include one or more first holes 146 extending in the thickness direction T through the railway plate.

[0041] The first hole 146 may extend through the field-side shoulder 144 in the thickness direction.

[0042] In a further non-limiting embodiment, the first hole 146 may extend through the field side rib 148 in the thickness direction. Figure 1 As shown, the first hole 146 can cut through the side wall 148a. Figure 6 As shown, the first hole 146 may have sides that overlap with the sidewall 148a.

[0043] The first hole 146 may have the same or similar shape and the same or similar size as the nail hole 114. In other words, the first hole 146 may have a generally rectangular shape, such as a square shape, to accommodate the rail nail driving through the first hole 146 into the railway sleeper (railway sleeper). The side length of the first hole 146 may be 0.5 inches to 1.5 inches, for example, about When the railroad rail 20 is placed on the rail seat 112, a track spike can be inserted through the first hole 146 and tightened to secure the railroad rail 20 to the rail seat 112. The track spike inserted through the first hole 146 can be the same as the track spike inserted through the spike hole 114.

[0044] The first hole 146 is a non-limiting example of a first retaining device receiving portion. In other embodiments, the first retaining device receiving portion configured to receive the first retaining device for securing the railroad rail 20 to the rail seat 112 may include one or more of a hole, a slot, a groove, a cavity, a bolt hole, or any other form suitable for interfacing with the first retaining device for securing the railroad rail 20 to the rail seat 112. A track spike is a non-limiting example of a first retaining device. Corresponding to various embodiments, the first retaining device for securing the railroad rail 20 to the rail seat 112 may include one or more of a spike, a screw, a pin, a staple, a wedge, or any other form suitable for interfacing with the first retaining device receiving portion and the railroad sleeper to secure the railroad rail 20 to the rail seat 112. The first retaining device is not an integral part of the tie plate 10.

[0045] exist Figure 1 In the embodiment shown, there is one first aperture 146 .

[0046] In a non-limiting embodiment, the distance between the center of the first hole 146 and the second edge 108b is 2 inches to inches, e.g. approx. inch.

[0047] like Figure 1 As shown, the field side flange 140 further includes a fixing retainer 142 suspended above the rail seat 112. The fixing retainer 142 is an integral part of the backing plate 10, extending away from the bottom surface of the backing plate 10 in the thickness direction T and toward the rail side.

[0048] In a non-limiting embodiment, the stationary retainer 142 extends from a field-side shoulder 144. In a non-limiting embodiment, the stationary retainer 142 extends from a field-side rib 148.

[0049] The fixed retainer 142 is configured to prevent the railway rail 20 from moving in the thickness direction T. Figure 2 and 3 As shown, the fixing retainer 142 can be hook-shaped. Figure 9As shown, the fixed retainer 142 constrains (limits) movement of the railroad rail 20 in the thickness direction like a hook when the railroad rail 20 is placed on the tie seat 112.

[0050] The fixed retainer 142 can also be configured to prevent movement of the railroad rail 20 toward the field side.

[0051] As shown, the fixed retainer 142 is configured to engage the bottom 202 of the railroad rail 20. Figure 9

[0052] The fixed retainer 142 can have a surface 142b facing the tie seat 112, and the surface 142b facing the tie seat 112 is in line with the surface of the bottom 202 of the railroad rail 20.

[0053] In other embodiments, the inclination of the surface 142b facing the tie seat 112 can be higher than the inclination of the tie seat 112, as shown in Figure 2 and Figure 3 .

[0054] As shown in Figure 2 and Figure 3 , the surface 142b can extend from the upper end of the sidewall 148a. Between the sidewall 148a and the surface 142b, there can be a curved surface with a radius of curvature r3 of from 0.5 inches, for example about 0.25 inches.

[0055] The upper surface of the fixed retainer 142 can include a first inclined surface fl, a first curved surface with a radius rl, a second inclined surface f2, and a second curved surface with a radius r2.

[0056] The first inclined surface fl can have an inclination approximately or identical to that of the surface 142b. The inclination of the second inclined surface f2 can be higher than the inclination of any of the tie seat 112, the surface 142b, the first inclined surface fl, and the inclined upper surface of the rib 148.

[0057] The first curved surface rl can be disposed between the first inclined surface fl and the second inclined surface f2. The radius rl can be from 0.5 inches to 2 inches, for example about 1 inch.

[0058] The second curved surface r2 can be disposed between the second inclined surface f2 and the upper surface of the other portion of the shoulder 144. The radius r2 can be from 0.5 inches to 2 inches, for example about 1 inch.

[0059] ​In non-limiting embodiments, the fixed retainer 142 overhangs the rail seat 112 by at least one-tenth of the rail seat width in the width direction W.

[0060] The portion of the fixed retainer 142 that overhangs the rail seat 112 can have a width of 0.75 inches to 1 inch, for example about inches.

[0061] The fixed retainer 142 can include a sidewall 142a that extends upward in the thickness direction T and extends in the length direction L. The sidewall 142a can have a height in the thickness direction T of 0.25 inches to 0.75 inches, for example about 0.5 inches.

[0062] The lower edge of the sidewall 142a can have a height in the thickness direction T relative to the rail seat 112 of 0.5 inches to 1 inch, for example about 0.75 inches.

[0063] In non-limiting embodiments, the fixed retainer 142 does not coextend with either side of the pad 10 in the length direction L of the pad 10.

[0064] In non-limiting embodiments, the fixed retainer 142 has a length in the length direction that is in a range of 0.2 to 0.5 times a length of the pad 10 in the length direction.

[0065] The fixed retainer 142 can have a length in the length direction L of 2.5 inches to 3.5 inches, for example about 3 inches, a width in the width direction W of 1.5 to 2.5 inches, for example about inches, and a height in the thickness direction T of 1 inch to 1.5 inches, for example about inches.

[0066] In non-limiting embodiments, the fixed retainer 142 and the first hole 146 (or first retaining device receiving portion) are disposed along the length direction L of the pad 10.

[0067] In non-limiting embodiments, the fixed retainer 142 and the first hole 146 (or first retaining device receiving portion) are spaced apart along the length direction L of the pad 10.

[0068] In non-limiting embodiments, the fixed retainer 142 has a distance between a center of the fixed retainer 142 and the first edge 108a of 2 inches to inches, for example about inches.

[0069] In non-limiting embodiments, the fixed retainer 142 has a distance between a center of the fixed retainer 142 and a center of the first hole 146 of 3 inches to 4 inches, for example about inches.

[0070] In non-limiting embodiments, in the length direction L, the distance between the first edge 108a and the side of the fixed retainer 142 proximate the first edge 108a is 0.5 inches to 0.75 inches, for example about inches.

[0071] In non-limiting embodiments, in the length direction L, the distance between the side of the fixed retainer 142 distal from the first edge 108a and the adjacent side of the first hole 146 is 1 inch to 2 inches, for example about inches. When a cleat (not shown) is inserted into the first hole 146 and secured, in the length direction L, the distance between the edge of the cleat and the aforementioned side of the first hole 146 can be 1 inch to 1.5 inches, for example about inches.

[0072] In non-limiting embodiments, in the width direction W, the distance between the field side edge 104 and the side wall 142a of the fixed retainer 142 is 4 inches to 5 inches, for example about inches.

[0073] In non-limiting embodiments, in the width direction W, the distance between the field side edge 104 and the side of the fixed retainer 142 proximate the field side edge 104 is 2 inches to 3 inches, for example about inches. A cleat hole 114 can be formed between the side of the fixed retainer proximate the field side edge 104 and the field side edge 104. In non-limiting embodiments, the distance between the side of the fixed retainer 142 proximate the field side edge 104 and the adjacent side of the cleat hole 114 formed between this side of the fixed retainer and the field side edge 104 is 0.75 inches to inches, for example about inches.

[0074] It can be appreciated that the fixed retainer 142 should be sufficiently distal from the first hole 146 and the cleat hole 114 to avoid being struck by a hammer striking a cleat.

[0075] Still referring to Figure 1 , the flange 160 can include a flange shoulder 164 that extends upward from the flange 160 in the thickness direction T.

[0076] The flange shoulder 164 can further include a flange rib 168 that extends further upward from the flange shoulder 164 in the thickness direction T.

[0077] The rib 168 can be more inclined than other portions of the shoulder 164. As Figure 2As shown, there may be a curved surface with a radius r6 between the inclined upper surface of the rib 168 and the upper surface of the rest of the shoulder 164, where r6 is 1 inch to 1.5 inches, for example, about 1.25 inches. The interface between the top of the rib 168 and the inclined upper surface of the rib 168 may be a curved surface with a radius r7, where r7 is inches to 0.5 inches, for example, about inch.

[0078] The inter-rail side rib 168 may include a side wall 168 a that extends upward from the rail seat 112 in the thickness direction T and extends along the length direction L from the first edge 108 a to the second edge 108 b .

[0079] When the rail 20 is placed on the rail seat 112, the side wall 168a can be the railway rail 20 ( Figure 9 ) provides support on the rail side (inside) edge.

[0080] The thickness of the rail-side shoulder portion 164 in the thickness direction T may be the same as the thickness of the field-side shoulder portion 144 in the thickness direction T, and may extend in the thickness direction T. inches to 0.75 inches, for example, about inch.

[0081] The rail-side ribs 168 may have the same thickness in the thickness direction T as the field-side ribs 148 and extend in the thickness direction T by 0.125 inches to 0.75 inches, for example, about inch.

[0082] The height of the sidewall 168a in the thickness direction T may be the same as the height of the sidewall 148a, which is 0.125 inches to 0.75 inches, for example, about inch.

[0083] In some embodiments, as Figure 3 As shown, the inclination of the imaginary line K connecting the apex of the field-side rib 148 and the apex of the inter-rail-side rib 168 matches (or is equal to) the inclination of the rail seat 112. For example, when the rail seat 112 is inclined at a ratio of 1:40, the imaginary line K between the ribs 148 and 168 may be parallel to the rail seat 112 and have a slope corresponding to the ratio of 1:40.

[0084] The rail side flange 160 may further include one or more second holes 166 extending through the railway plate 10 in the thickness direction T.

[0085] The second hole 166 may extend in the thickness direction T through the inter-rail side shoulder 164 .

[0086] In further non-limiting embodiments, the second hole 166 can extend through the cross- web 168 in the thickness direction T. As shown, the second hole 166 can cut through the sidewall 168a. As shown, the second hole 166 can have a side that overlaps the sidewall 168a. Figure 1 Figure 6

[0087] The second hole 166 can have the same or similar shape and the same or similar dimensions as the spike hole 114. In other words, the second hole 166 can have a generally rectangular shape, such as a square, to accommodate a railroad spike to be inserted through the second hole 166 into a railroad tie (sleeper). The second hole 166 can have a side length of 0.5 inches to 1.5 inches, such as about When the railroad rail 20 is seated on the rail seat 112, a railroad spike can be inserted through the second hole 166 and fastened to secure the railroad rail 20 to the rail seat 112. The railroad spike inserted through the second hole 166 can be the same as the railroad spike inserted through the spike hole 114.

[0088] In some embodiments, the cross-web flange includes a second retaining device receiving portion configured to receive a second retaining device configured to secure the railroad rail to the rail seat. The second hole 166 is a non-limiting example of the second retaining device receiving portion. In other embodiments, the second retaining device receiving portion configured to receive a second retaining device for securing the railroad rail 20 to the rail seat 112 can include one or more of a hole, a slot, a recess, a cavity, a bolt hole, or any other suitable form to interface with the second retaining device for securing the railroad rail 20 to the rail seat 112. The railroad spike is a non-limiting example of the second retaining device. Correspondingly to the embodiments, the second retaining device for securing the railroad rail 20 to the rail seat 112 can include one or more of a spike, a screw, a pin, a U-nail, a wedge, or any other suitable form to interface with the second retaining device receiving portion and the railroad tie to secure the railroad rail to the rail seat 112.

[0089] In the embodiment shown in Figure 1 there are two second holes 166.

[0090] The distance between the center of one second hole 166 and the first edge 108a can be equal to the distance between the center of the retaining clip 142 and the first edge 108a, which is 2 inches to for example, about inches.

[0091] The distance between the center of the other second hole 166 and the second edge 108b can be equal to the distance between the center of the first hole 146 and the second edge 108b, which is 2 inches to for example, about​​ inches.

[0092] The distance between the centers of the two second holes 166 can be the same as the distance between the center of the fixed retainer 142 and the center of the first hole 146, 3 to 4 inches, for example, about 3.5 inches. inches.

[0093] The above discussion only discloses and describes exemplary embodiments. It is understood by those skilled in the art that the disclosure can be practiced in other specific forms and not deviate from its spirit. The features discussed for a specific embodiment are not limited to that embodiment, but can be combined with or substituted for other features of other embodiments. Therefore, the disclosure is intended to be illustrative, not limiting, of the scope of the claims or other embodiments encompassed by the claims. The disclosure, including any readily apparent variants of the disclosure disclosed herein, defines in part the scope of the claims for which protection is sought, so that no inventive subject matter is contributed to the public.

Claims

1. A railway tie plate characterized by, Comprising: a substantially prismatic body extending between a field side and a trackside side in a width direction of the railway tie plate; a field side flange on the field side extending from a bottom surface of the railway tie plate in a thickness direction of the railway tie plate; a trackside side flange on the trackside side extending from the bottom surface of the railway tie plate in the thickness direction of the railway tie plate; an intermediate portion extending between the field side flange and the trackside side flange, the intermediate portion comprising a rail seat configured to receive a railway rail; wherein at least one of the field side flange and the trackside side flange comprises a securing portion configured to receive a securing device configured to secure the railway tie plate to a railway tie; wherein the field side flange comprises a first retaining device receiving portion configured to receive a first retaining device configured to secure the railway rail to the rail seat; wherein the field side flange comprises a fixed retainer as an integral part of the railway tie plate, the fixed retainer extending away from the bottom surface of the railway tie plate in the thickness direction and towards the trackside side, and the fixed retainer overhanging the rail seat; and wherein the fixed retainer is configured to prevent movement of the railway rail in the thickness direction.

2. The railroad tie plate of claim 1, wherein, The fixed retainer has a surface facing the rail seat, the surface having a higher degree of inclination than the rail seat.

3. The railroad tie plate of claim 1 wherein, The fixed retainer is configured to engage with a bottom of a railway rail.

4. The railroad tie plate of claim 1 wherein, The fixed retainer has a surface facing the rail seat, and the surface conforms to a surface of a bottom of a railway rail.

5. The railroad tie plate of claim 1 wherein, The fixed retainer and the first retaining device receiving portion are arranged in a length direction of the railway tie plate.

6. The railroad tie plate of claim 5 wherein, The fixed retainer and the first retaining device receiving portion are spaced apart in the length direction of the railway tie plate.

7. The railroad tie plate of claim 1 wherein, A ratio of a length of the fixed retainer in the length direction to a length of the railway tie plate in the length direction is in a range of 0.2 to 0.

5.

8. The railroad tie plate of claim 1 wherein, The fixed retainer overhangs the rail seat and extends at least one tenth of a width of the rail seat in the width direction.

9. The railroad tie plate of claim 1 wherein, The fixed retainer does not coextend with either side of the railway tie plate in the length direction of the railway tie plate.

10. The railroad tie plate of claim 1 wherein, The first retaining device is not an integral part of the railway tie plate.

11. The railroad tie plate of claim 1 wherein, The first retaining device receiving portion is a first hole extending through the railway tie plate in the thickness direction, and the first retaining device is a rail spike.

12. The railroad tie plate of claim 1 wherein, The trackside side flange comprises a second retaining device receiving portion configured to receive a second retaining device configured to secure a railway rail to the rail seat.

13. The railroad tie plate of claim 1 wherein, The securing portion comprises a hole extending through the railway tie plate in the thickness direction of the railway tie plate.

14. The railroad tie plate of claim 1, wherein, The field side flange comprises a field side shoulder extending upwardly from the field side flange in the thickness direction of the railway tie plate, wherein the field side shoulder comprises a field side rib extending further from the field side shoulder in the thickness direction; The field side rib portion includes a side wall extending from the rail seat in the thickness direction and in a length direction of the railway tie plate.

15. The railroad tie plate of claim 14, wherein, The fixed holder extends from the field side rib portion.

16. The railroad tie plate of claim 14 wherein, The first holding device accommodating portion is a first hole extending through the field side rib portion in the thickness direction, and the first holding device is a rail spike.

17. The railroad tie plate of claim 14 wherein, The track side flange includes a track side shoulder portion extending upward from the track side flange in a thickness direction of the railway tie plate, The track side shoulder portion includes a track side rib portion further extending from the track side shoulder portion in the thickness direction. The track side rib portion includes a side wall extending from the rail seat in the thickness direction and in a length direction of the railway tie plate.

18. The railroad tie plate of claim 17, wherein, An inclination of an imaginary line between an apex of the field side rib portion and an apex of the track side rib portion is equal to an inclination of the rail seat.

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