CA1123405A - Modular railroad crossings - Google Patents
Modular railroad crossingsInfo
- Publication number
- CA1123405A CA1123405A CA308,106A CA308106A CA1123405A CA 1123405 A CA1123405 A CA 1123405A CA 308106 A CA308106 A CA 308106A CA 1123405 A CA1123405 A CA 1123405A
- Authority
- CA
- Canada
- Prior art keywords
- ribs
- modules
- module
- railroad crossing
- openings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Road Paving Structures (AREA)
Abstract
ABSTRACT
This disclosure relates to railroad grade crossings and relates particularly to modules for use in connection therefor which are adapted to be installed directly on the ties of a rail-road crossing, said modules being adapted to be secured together in position by the driving of lag screws or the like through openings in said modules and into the ties. The modules are preferably formed of linear high-density polyethylene or semi-rigid material and are utilized for surfacing high traffic inter-sections across railroads and plant and warehouse properties.
The modules are centered between rails and positioned on either side thereof, and in the event of failure or destruction of any module, replacement modules may be readily installed in place thereof, and said modules may be easily removed for track work and such easy reapplication is a primary advantage.
This disclosure relates to railroad grade crossings and relates particularly to modules for use in connection therefor which are adapted to be installed directly on the ties of a rail-road crossing, said modules being adapted to be secured together in position by the driving of lag screws or the like through openings in said modules and into the ties. The modules are preferably formed of linear high-density polyethylene or semi-rigid material and are utilized for surfacing high traffic inter-sections across railroads and plant and warehouse properties.
The modules are centered between rails and positioned on either side thereof, and in the event of failure or destruction of any module, replacement modules may be readily installed in place thereof, and said modules may be easily removed for track work and such easy reapplication is a primary advantage.
Description
3~
1 This inYention relates to a ra~lroad crossinq formed from st.milar ~odular structuXes~ s~d ~tructure$ p~oY~ded ~th.
relatlvely -th~ck upper surfaces~ and re~nfo~cement means preferably arranged longitudinally and trans~ersely thereof, said modules having interf~tting means ~hereby securing means may be driven through openings thePein into a t~e, thus securing pairs of said modules together and to a common tie member.
~n object of this invention is to provide a crossing, preferably made of molded, high-density linear polyethylene structural foam material, which modules are of relatively ht.gh strength and wear res~stant under all climatic conditions a.nd afford and have.shock-absorbing characteristics.
~ nother object of th~s invention is to provide railroad crossing modules for railroad crossings which are inexpensive to manufacture and relatively economical in use and have a long life~
In one aspect the present invention provides a rail-road ~rossing installation comprising a plurality of substantially rectangular, molded modules of a lightweight structural plastic mater~.al, each module having openings for receiving fastening means adapted to secure the module to a rail supporting structure, the modules being disposed within the gauge space between the rail and on the field side thereof, the modules being provided on their undersides with spaced reinforcing longitudinally extending ribs and spaced transversely extending ribs, the longitudinally extending ribs being engageable with the rail supporting structure to support the module at the general height of the rail, the transversely extending ribs including ribs of relatively greater depth than the other of the transversely extending ribs.
Other objects and aspects of this invention and the -D -3- ~
~23~
1 invention itself wlll become more readily appaEent b~ reference to the drawings in which:
-3a-D
3~0~ ~
. ~ ' ,. .
` . ' Figure 1 is a top plan view of the modular installation of this invention showing modules installed between a pair of rails and being installed between the rails and on either side thereof;
~ Figare 2 is an end view of the installation of Figure 1 .
as viewed from the bottom of Figure l; .
_~- -Figure 3 is a section view taken along the line 3-3 of Figure l; - . .
. Figure 4 is an enlarged top plan view of a typical modular section showing embossing and recessing thereof;
Figure 5 is a view taken along the line 5-5 of Figure 4; .
Figure 6 is a sectional view taken along the line 6-6 of Figure 4; .
Figure 7 is a top plan enlarged view of the end piece shown in Figure Z;
Figure 8 is a side view of the end piece as seen from the right hand side of Figure 7; and Figure 9 is an end view of the end section of Figure 7.
as seen from the bottom of Figure 7. ;
.
~ .
,~...... ............ ~ 1~23~
., '.
. '`
Referring now to the drawings in all of which like part~
are shown by like reference characters, it will be observed that the railroad crossing installation of this invention consists of a plurality of substantially rectangular modules 10 of high-density linear polyethylene structural foam or similar semi-rigid ~material, each module consisting of an integral relatively thickened top 11, a plurality,of spaced reinorcing -longitudinall~
. . d~ extending ribs 12, a plurality of spaced reinforcing transversely extending ribs 13a and 13b, alternating ribs 13a being of rela-tively greater depth than alternating ribs 13b. Each of said modules is also provided with pairs of spaced semi-circular oppositely facing openings 14, 15 on opposite ends thereof which mate with aligned semi-circular openings 15, 14 oppositely facing the same to form circular openings 16 for tie securing means such as lag screws 17 or the like. Said lag screws project downwardly through the openings 15, 14 which extend through the ribs 12 into a tie 18 disposed beneath the rails.
It-will be noted that the ribs 12, 13a, 13b are tapered . and that the spaces between end ribs 13a of each facing module in-crease downwardly and provide for relative movement during travel of vehicles, etc., over the crossing and for slight expansion and contraction for climatic conditions.
On one side of each gage module 20, the module is pro-vided with an ou~wardly extending medial flange 21 and on one sid~
of each field module 22, the module is provided with a shoulder , 23 and a depending flange 24. The flange 21 of the ~ module 20 is adapted to extend inwardly ~oward the web "s" of the rail R and the flange 24 of the f~g~ module abuts the head "h" of the rail. -The outwardly extending medial flange 21 is adapted to act as a shelf or barrier to prevent dirt, cinders or like mate-, 3~C1 5 ~
~
rial from collecting about the rail base and the shoulder 23 and depending flange 24 also acts as a shelf and further provides clearance for wheel passage over the rails. r. ' ' ' ~-The upper or top surface of each module is preferably provided with embossed gridwork 24 to provide traction as shown . _ in Figures 1 and 4.
.. In Figures 1, 2, 7, 8 andL 9, optional downwardly in- :clined modules 30 are disclos~d which are adapted to be used as .
_ field and gage end pieces affording end surfaces adapted to de-10 . flect any downwardly projecting elements carried by a railway car or the like and to prevent gouging of the top surface of the crossing.
Said modules 30 are preferably constructed of the molde material for the previously-described modules 10 and are provided with sloped upper surfaces 31, relatively deep ribbed ends 32, an are secured to ties 18 by lag screw means 17,~17 inserted through .
spaced openings 34 in a thickened nose 33 thereof. The modules ¦are preferably provided with a plurality of spaced longitudinally .
.. ¦extending ribs 35 of greater depth at their ends integral with .
¦ the upper surface of the module 30 of greatest depth adapted to ¦interfit with adjacent field or gage modules 20, being provided ¦with semi-circular openings 36 adapted~to be aligned with and ¦mate with semi-circular opening 15 in said adjacent module 20 ¦and being secured thereto by lag screws 17.
¦ While the invention is described in connection with ¦specific emobodiments, it will be understood that changes in ¦material, size and form may be made without, howe~er, departing . ¦from the spirit of this invention and the scope of the appended I claims. .
30 ~ ~ ~hat wo claim iE~
1 This inYention relates to a ra~lroad crossinq formed from st.milar ~odular structuXes~ s~d ~tructure$ p~oY~ded ~th.
relatlvely -th~ck upper surfaces~ and re~nfo~cement means preferably arranged longitudinally and trans~ersely thereof, said modules having interf~tting means ~hereby securing means may be driven through openings thePein into a t~e, thus securing pairs of said modules together and to a common tie member.
~n object of this invention is to provide a crossing, preferably made of molded, high-density linear polyethylene structural foam material, which modules are of relatively ht.gh strength and wear res~stant under all climatic conditions a.nd afford and have.shock-absorbing characteristics.
~ nother object of th~s invention is to provide railroad crossing modules for railroad crossings which are inexpensive to manufacture and relatively economical in use and have a long life~
In one aspect the present invention provides a rail-road ~rossing installation comprising a plurality of substantially rectangular, molded modules of a lightweight structural plastic mater~.al, each module having openings for receiving fastening means adapted to secure the module to a rail supporting structure, the modules being disposed within the gauge space between the rail and on the field side thereof, the modules being provided on their undersides with spaced reinforcing longitudinally extending ribs and spaced transversely extending ribs, the longitudinally extending ribs being engageable with the rail supporting structure to support the module at the general height of the rail, the transversely extending ribs including ribs of relatively greater depth than the other of the transversely extending ribs.
Other objects and aspects of this invention and the -D -3- ~
~23~
1 invention itself wlll become more readily appaEent b~ reference to the drawings in which:
-3a-D
3~0~ ~
. ~ ' ,. .
` . ' Figure 1 is a top plan view of the modular installation of this invention showing modules installed between a pair of rails and being installed between the rails and on either side thereof;
~ Figare 2 is an end view of the installation of Figure 1 .
as viewed from the bottom of Figure l; .
_~- -Figure 3 is a section view taken along the line 3-3 of Figure l; - . .
. Figure 4 is an enlarged top plan view of a typical modular section showing embossing and recessing thereof;
Figure 5 is a view taken along the line 5-5 of Figure 4; .
Figure 6 is a sectional view taken along the line 6-6 of Figure 4; .
Figure 7 is a top plan enlarged view of the end piece shown in Figure Z;
Figure 8 is a side view of the end piece as seen from the right hand side of Figure 7; and Figure 9 is an end view of the end section of Figure 7.
as seen from the bottom of Figure 7. ;
.
~ .
,~...... ............ ~ 1~23~
., '.
. '`
Referring now to the drawings in all of which like part~
are shown by like reference characters, it will be observed that the railroad crossing installation of this invention consists of a plurality of substantially rectangular modules 10 of high-density linear polyethylene structural foam or similar semi-rigid ~material, each module consisting of an integral relatively thickened top 11, a plurality,of spaced reinorcing -longitudinall~
. . d~ extending ribs 12, a plurality of spaced reinforcing transversely extending ribs 13a and 13b, alternating ribs 13a being of rela-tively greater depth than alternating ribs 13b. Each of said modules is also provided with pairs of spaced semi-circular oppositely facing openings 14, 15 on opposite ends thereof which mate with aligned semi-circular openings 15, 14 oppositely facing the same to form circular openings 16 for tie securing means such as lag screws 17 or the like. Said lag screws project downwardly through the openings 15, 14 which extend through the ribs 12 into a tie 18 disposed beneath the rails.
It-will be noted that the ribs 12, 13a, 13b are tapered . and that the spaces between end ribs 13a of each facing module in-crease downwardly and provide for relative movement during travel of vehicles, etc., over the crossing and for slight expansion and contraction for climatic conditions.
On one side of each gage module 20, the module is pro-vided with an ou~wardly extending medial flange 21 and on one sid~
of each field module 22, the module is provided with a shoulder , 23 and a depending flange 24. The flange 21 of the ~ module 20 is adapted to extend inwardly ~oward the web "s" of the rail R and the flange 24 of the f~g~ module abuts the head "h" of the rail. -The outwardly extending medial flange 21 is adapted to act as a shelf or barrier to prevent dirt, cinders or like mate-, 3~C1 5 ~
~
rial from collecting about the rail base and the shoulder 23 and depending flange 24 also acts as a shelf and further provides clearance for wheel passage over the rails. r. ' ' ' ~-The upper or top surface of each module is preferably provided with embossed gridwork 24 to provide traction as shown . _ in Figures 1 and 4.
.. In Figures 1, 2, 7, 8 andL 9, optional downwardly in- :clined modules 30 are disclos~d which are adapted to be used as .
_ field and gage end pieces affording end surfaces adapted to de-10 . flect any downwardly projecting elements carried by a railway car or the like and to prevent gouging of the top surface of the crossing.
Said modules 30 are preferably constructed of the molde material for the previously-described modules 10 and are provided with sloped upper surfaces 31, relatively deep ribbed ends 32, an are secured to ties 18 by lag screw means 17,~17 inserted through .
spaced openings 34 in a thickened nose 33 thereof. The modules ¦are preferably provided with a plurality of spaced longitudinally .
.. ¦extending ribs 35 of greater depth at their ends integral with .
¦ the upper surface of the module 30 of greatest depth adapted to ¦interfit with adjacent field or gage modules 20, being provided ¦with semi-circular openings 36 adapted~to be aligned with and ¦mate with semi-circular opening 15 in said adjacent module 20 ¦and being secured thereto by lag screws 17.
¦ While the invention is described in connection with ¦specific emobodiments, it will be understood that changes in ¦material, size and form may be made without, howe~er, departing . ¦from the spirit of this invention and the scope of the appended I claims. .
30 ~ ~ ~hat wo claim iE~
Claims (22)
1. Railroad crossing installation comprising a plurality of substantially rectangular, molded modules of a lightweight structural plastic material, each module having openings for receiving fastening means adapted to secure the module to a rail supporting structure, said modules being disposed within the gauge space between the rail and on the field side thereof, said modules being provided on their undersides with spaced reinforcing longitudinally extending ribs and spaced transversely extending ribs, said longitudinally extending ribs being engageable with the rail supporting structure to support said module at the general height of the rail, said transversely extending ribs including ribs of relatively greater depth than other of said transversely extending ribs.
2. A railroad crossing installation as claimed in claim 1, wherein each of said modules has a pair of sides provided with spaced openings oppositely facing on either side thereof, said openings adapted to mate with aligned similar facing openings on adjacent abutting modules, fastening means inserted within said openings and extending into locking engagement with a railroad tie disposed beneath the jointure of each pair of said modules.
3. A railroad crossing installation as claimed in claim 1 wherein said rail supporting structure includes a plurality of elongated ties extending transversely of the rail and tie plates supported on said ties, said longitudinal ribs including ribs which engage the ties and ribs which engage tie plates of said rail supporting structure.
4. A railroad crossing installation as claimed in claim 1 wherein said transverse ribs include ribs which engage the rail supporting structure.
5. A railroad crossing installation as claimed in claim 2 wherein each of said gauge side modules are provided with means projecting near to the rail to prevent material collecting about the sides thereof,
6. A railroad crossing installation as claimed in claim 2 wherein one of said longitudinally extending ribs of each said gauge side module is provided with an outwardly projecting medial flange adapted to be disposed in near relation to the web of each rail.
7. A railroad crossing installation as claimed in claim 2 wherein each of said field side module is provided with a shoulder and a depending flange adjacent the head of the rail near which it is disposed.
8. A railroad crossing installation as claimed in claim 2 wherein said modules are formed of high density, linear polyethylene structural foam material.
9. A railroad crossing installation as claimed in claim 2 wherein said ribs are generally tapered downwardly.
10. A railroad crossing installation as claimed in claim 2 including lag screws comprising said fastening means to tie adja-cent modules together and to an underlying tie,
11. A railroad crossing installation as claimed in claim 2, wherein said modules further comprise relatively thickened and integral tops.
12. A railroad crossing installation as claimed in claim 2 further including a plurality sloped modules disposed at an end of said installation, said sloped modules having thickened upper surfaces and nose portions, spaced longitudinally extending downwardly tapered reinforcing means, spaced openings in said nose portion and spaced openings on the upper sloped portion of the sloped module adapted to align and mate with corresponding spaced openings on a side of the modules adjacent thereto,
13. A railroad crossing installation as claimed in claim 2 wherein said pair of sides are transverse reinforcing ribs en-gageable with rail supporting structure for supporting said module.
14. A railroad crossing installation as claimed in claimed 13 wherein a group of said transverse ribs are disposed intermediate said transverse reinforcing side ribs comprising said pair of sides for each said module, each rib of said intermediate group depending for a lesser depth as compared to the depth of extension of each of said transverse side ribs,
15. A railway crossing installation as claimed in claim 14 wherein said intermediate group of transverse ribs alternately depend for lesser and greater depths with respect to one another,
16. A railway crossing installation as claimed in claim 14 wherein said rail supporting structure includes a plurality of elongated ties extending transversely of the rails and tie plates supported on said ties, said transverse reinforcing side ribs of each said module being recessed adjacent one end thereof on the underside thereof for receiving and engaging the confronting tie plate of the rail supporting structure, 17, A railway crossing installation as claimed In claim 16 wherein each module comprises a relatively thickened and integral top, said intermediate group of transverse ribs alternately
Claim 17 continued ...
depending from said thickened top for lesser and greater depths with respect to one another, at least certain of said ribs of said intermediate group being tapered in a downward direction.
depending from said thickened top for lesser and greater depths with respect to one another, at least certain of said ribs of said intermediate group being tapered in a downward direction.
18. A railroad crossing installation as claimed in claim 2 wherein said spaced openings comprise spaced semi-circular openings.
19. A substantially rectangular, molded module of a light-weight structural plastic material for a railroad crossing in-stallation comprising a plurality of said modules, said module having openings for receiving fastening means adapted to secure the module to a rail supporting structure, said module being provided on its underside with spaced reinforcing longitudinally extending ribs and spaced transversely extending ribs, said longitudinally extending ribs being engageable with the rail supporting structure to support said module at the general height of the rail, said transversely extending ribs including ribs of relatively greater depth than other of said transversely extending ribs.
20. A module as claimed in claim 19 further having a pair of sides provided with spaced openings oppositely facing on either side thereof, said openings adapted to mate with aligned similar facing openings on adjacent abutting modules comprising said railroad crossing installation, fastening means inserted within said openings and extending into locking engagement with a railroad tie disposed beneath the jointure of each pair of abutting modules.
21. A module as claimed in claim 19 wherein said ribs are generally tapered downwardly.
22. A module as claimed in claim 19, 20 or 21 formed of high density linear polyethylene structural foam material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US82597877A | 1977-08-19 | 1977-08-19 | |
| US825,978 | 1977-08-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1123405A true CA1123405A (en) | 1982-05-11 |
Family
ID=25245373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA308,106A Expired CA1123405A (en) | 1977-08-19 | 1978-07-25 | Modular railroad crossings |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1123405A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699839A (en) * | 2021-09-06 | 2021-11-26 | 上海市城市建设设计研究总院（集团）有限公司 | Urban tramcar rail side semi-flexible transition structure and construction method thereof |
-
1978
- 1978-07-25 CA CA308,106A patent/CA1123405A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699839A (en) * | 2021-09-06 | 2021-11-26 | 上海市城市建设设计研究总院（集团）有限公司 | Urban tramcar rail side semi-flexible transition structure and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |