EP0468945A1 - Clamping means and sleeper assembly - Google Patents
Clamping means and sleeper assembly Download PDFInfo
- Publication number
- EP0468945A1 EP0468945A1 EP91850184A EP91850184A EP0468945A1 EP 0468945 A1 EP0468945 A1 EP 0468945A1 EP 91850184 A EP91850184 A EP 91850184A EP 91850184 A EP91850184 A EP 91850184A EP 0468945 A1 EP0468945 A1 EP 0468945A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamping means
- rail
- sleeper
- foot
- unit
- 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.)
- Granted
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
- E01B9/28—Fastening on wooden or concrete sleepers or on masonry with clamp members
- E01B9/30—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips
Definitions
- the present invention relates to a method of attaching a rail in a railway track to a sleeper.
- a clamping means is arranged on the sleeper on each side of the rail web.
- Each clamping means consists of several parts; usually of a clamping plate and a screw. Several loose parts are therefore required to effect attachment and this must also be done manually.
- When new rails are to be laid it is quite simple to use several parts in order to manually secure the rail.
- the object of the present invention is to facilitate attaching rails to a sleeper and also to facilitate the removal of a rail from a sleeper.
- a clamping means is used having a tongue which is pivotably journalled on a sleeper in such a manner that the clamping means can be pivoted into contact against a rail foot and out of contact with said foot.
- the use of a pivotable clamping means enables extremely simple attachment of a rail to a sleeper and requires only one tool which can turn the clamping means about its axis. Thus, apart from the actual turning tool, there are no loose parts whatsoever. If a rail is to be replaced the clamping means need only be turned from its contact position, thus making replacement extremely easy.
- a unit can be utilized on rails already laid, said unit being displaced along the rail, thereby turning the clamping means to abutment with the rail foot or turning it out of contact with the rail foot.
- a clamping means which is secured to a sleeper and which is pivotable about a shaft located substantially perpendicular to the upper side of the sleeper.
- the clamping means pivotable about an axis, has an outwardly directed flange or tongue which can be turned to abutment with a rail foot or out of abutment with a rail foot.
- the clamping means with its flange is influenced by a spring.
- the spring may consist of a helical spring or some other spring device like a rolled laminated spring standing on edge, cup springs, ring springs or Archimedes springs arranged about the axis of oscillation of the clamping means.
- One end of the spring may be in contact with the clamping means and the other end may abut against a surface at the upper end of the axis of oscillation.
- the spring itself is so dimensioned that when the clamping means is in contact with the foot of the rail, a pressure is obtained which is sufficient to retain the rail in position when it is used for traffic and at fluctuations in temperature.
- the temperature in winter may be -50°C and in summer it may be over 40°C.
- the lower end of the spring may be extended so that it is in contact with the flange or tongue of the clamping means.
- the clamping means may cooperate with a snap device so that when the clamping means is in operating position, i.e. in contact with the foot of the rail, the snap device will come into operation. In all other positions the snap device will be out of operation.
- the clamping means may be arranged on a plate secured on the upper side of a sleeper.
- the axis of oscillation of the clamping means may also be secured inside the sleeper itself, either by means of a tapping arrangement or by grouting. According to the latter alternative, the sleeper itself is made of concrete.
- Figure 1 shows a rail 1 with head 2, web 3 and foot 4.
- the foot rests on a sleeper 5.
- the sleeper is made of concrete and has a shaft 6 grouted into it, the shaft being provided with cavities 7.
- the function of the cavities is to fix the position of the shaft 6 in the sleeper when the concrete has solidified.
- the lower end of the shaft may be optionally desired provided the shaft 6 is permanently secured when the concrete has set.
- a clamping means 9 is applied about the shaft 6, suitably resting on a plate shown in Figure 4 and designated 15. Said plate 15 is suitably permanently joined to the shaft 6.
- the clamping means 9 is provided with an aperture enabling it to be pivoted about the shaft 6.
- the clamping means 9 is provided with a radially outwardly directed tongue or flange 10.
- a helical spring 11 is provided in the clamping means.
- the other end of the helical spring acts on a plate 12 riveted to the shaft 6 which limits its upward movement. 13 designates the head of a screw or rivet.
- the lower end 14 of the spring is pulled out and is in contact with the tongue, as shown in Figures 2 and 3.
- the spring 11 is dimensioned so as to achieve a pressure on the tongue 10 that is sufficient to retain the rail 1 when it is subjected to the stresses caused by traffic and also by temperature fluctuations.
- Figures 2 and 3 show the clamping means in operation with its tongue in contact with the rail foot, and with the tongue out of its retaining position.
- clamping means 9 and sleeper 5 may be so designed that when the clamping means assumes the position shown in Figure 2 the snap device will come into operation thereby positioning the clamping means correctly to carry out its retaining function. It is clear from the drawings that the clamping means 9 can be turned to an unlimited extent about its axis 6.
- the clamping means 9 with parts 6-8 and 10-13 is normally in the form of a prefabricated unit and is therefore easy to apply on a sleeper. If a clamping means is damaged only the head of the screw or rivet need be ground off. Damaged parts can then easily be replaced and a new head welded on.
- Figure 4 shows a clamping means which functions in exactly the same manner as that illustrated in the previous figures but which differs in that the axis 6 is a tubular shaft secured to a plate 15 attached to the sleeper 5 by means of a screw joint 16.
- the shaft 6 may comprise a pipe with a screw running through it and penetrating into the sleeper 5 below, thereby securing the clamping means to the sleeper.
- a threaded sleeve can be grouted into the sleeper 5 if it is made of concrete.
- the unit may then be designed so that when it passes a clamping means 9 it either turns this to achieve contact with the rail foot or to disengage it from the rail foot.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Railway Tracks (AREA)
- Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
- Traffic Control Systems (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
Description
- The present invention relates to a method of attaching a rail in a railway track to a sleeper. A clamping means is arranged on the sleeper on each side of the rail web. Each clamping means consists of several parts; usually of a clamping plate and a screw. Several loose parts are therefore required to effect attachment and this must also be done manually. When new rails are to be laid it is quite simple to use several parts in order to manually secure the rail. However, problems arise when rails already laid are to be replaced and the clamping means are to be removed.
- The object of the present invention is to facilitate attaching rails to a sleeper and also to facilitate the removal of a rail from a sleeper. According to the invention a clamping means is used having a tongue which is pivotably journalled on a sleeper in such a manner that the clamping means can be pivoted into contact against a rail foot and out of contact with said foot. The use of a pivotable clamping means enables extremely simple attachment of a rail to a sleeper and requires only one tool which can turn the clamping means about its axis. Thus, apart from the actual turning tool, there are no loose parts whatsoever. If a rail is to be replaced the clamping means need only be turned from its contact position, thus making replacement extremely easy.
- Instead of using a tool to turn the clamping means a unit can be utilized on rails already laid, said unit being displaced along the rail, thereby turning the clamping means to abutment with the rail foot or turning it out of contact with the rail foot.
- For performance of the method according to the above a clamping means must be used which is secured to a sleeper and which is pivotable about a shaft located substantially perpendicular to the upper side of the sleeper. The clamping means, pivotable about an axis, has an outwardly directed flange or tongue which can be turned to abutment with a rail foot or out of abutment with a rail foot. The clamping means with its flange is influenced by a spring. The spring may consist of a helical spring or some other spring device like a rolled laminated spring standing on edge, cup springs, ring springs or Archimedes springs arranged about the axis of oscillation of the clamping means. One end of the spring may be in contact with the clamping means and the other end may abut against a surface at the upper end of the axis of oscillation. The spring itself is so dimensioned that when the clamping means is in contact with the foot of the rail, a pressure is obtained which is sufficient to retain the rail in position when it is used for traffic and at fluctuations in temperature. The temperature in winter may be -50°C and in summer it may be over 40°C.
- The lower end of the spring may be extended so that it is in contact with the flange or tongue of the clamping means.
- The clamping means may cooperate with a snap device so that when the clamping means is in operating position, i.e. in contact with the foot of the rail, the snap device will come into operation. In all other positions the snap device will be out of operation.
- The clamping means may be arranged on a plate secured on the upper side of a sleeper.
- The axis of oscillation of the clamping means may also be secured inside the sleeper itself, either by means of a tapping arrangement or by grouting. According to the latter alternative, the sleeper itself is made of concrete.
- Further characteristics of the present invention are revealed in the appended claims.
- The invention will be described in more detail in connection with the accompanying four sheets of drawings in which
- Figure 1 shows a rail on a sleeper and a clamping means anchored to the sleeper.
- Figures 2 and 3 show the clamping means in two different positions, and
- Figure 4 shows a different method of securing the clamping means to a sleeper.
- Figure 1 shows a
rail 1 withhead 2,web 3 andfoot 4. The foot rests on asleeper 5. The sleeper is made of concrete and has ashaft 6 grouted into it, the shaft being provided withcavities 7. The function of the cavities is to fix the position of theshaft 6 in the sleeper when the concrete has solidified. The lower end of the shaft may be optionally desired provided theshaft 6 is permanently secured when the concrete has set. A clamping means 9 is applied about theshaft 6, suitably resting on a plate shown in Figure 4 and designated 15. Saidplate 15 is suitably permanently joined to theshaft 6. The clamping means 9 is provided with an aperture enabling it to be pivoted about theshaft 6. The clamping means 9 is provided with a radially outwardly directed tongue orflange 10. When rotated about theshaft 6 the tongue of the clamping means can either be brought into contact with thefoot 4 of the rail or disengaged therefrom. Ahelical spring 11 is provided in the clamping means. The other end of the helical spring acts on aplate 12 riveted to theshaft 6 which limits its upward movement. 13 designates the head of a screw or rivet. Thelower end 14 of the spring is pulled out and is in contact with the tongue, as shown in Figures 2 and 3. Thespring 11 is dimensioned so as to achieve a pressure on thetongue 10 that is sufficient to retain therail 1 when it is subjected to the stresses caused by traffic and also by temperature fluctuations. - Figures 2 and 3 show the clamping means in operation with its tongue in contact with the rail foot, and with the tongue out of its retaining position.
- The actual clamping means 9 and
sleeper 5 may be so designed that when the clamping means assumes the position shown in Figure 2 the snap device will come into operation thereby positioning the clamping means correctly to carry out its retaining function. It is clear from the drawings that the clamping means 9 can be turned to an unlimited extent about itsaxis 6. - The clamping means 9 with parts 6-8 and 10-13 is normally in the form of a prefabricated unit and is therefore easy to apply on a sleeper. If a clamping means is damaged only the head of the screw or rivet need be ground off. Damaged parts can then easily be replaced and a new head welded on.
- Figure 4 shows a clamping means which functions in exactly the same manner as that illustrated in the previous figures but which differs in that the
axis 6 is a tubular shaft secured to aplate 15 attached to thesleeper 5 by means of ascrew joint 16. Theshaft 6 may comprise a pipe with a screw running through it and penetrating into thesleeper 5 below, thereby securing the clamping means to the sleeper. A threaded sleeve can be grouted into thesleeper 5 if it is made of concrete. - As is clear from the above, no loose parts whatsoever are required to secure a
rail 1 to a sleeper. The only measure required is to turn the clamping means 9 into or out of abutment with therail foot 4. - It should be evident that it is possible to displace a unit along rails already laid. The unit may then be designed so that when it passes a clamping means 9 it either turns this to achieve contact with the rail foot or to disengage it from the rail foot.
Claims (8)
- A method of attaching a rail to a crosstie or sleeper where the rail is provided on each side of the web with clamping means with the aid of which the foot of the rail is pressed against the upper side of the sleeper, characterised in that a clamping means (9-14) is used which is pivotably journalled about a shaft (6) on a cooperating sleeper (5) and which is provided with a tongue (10) which can be brought into and out of contact with the foot (4) of the rail (1) and is influenced by spring force (11).
- A method as claimed in claim 1, characterised in that each clamping means (9-14) is brought into and out of contact with the foot (4) of the rail (1) via a unit displaceable along the rail (1), said unit being set either to bring a clamping means (9-14) into or out of contact with the foot (4) of the rail (1).
- Clamping means for performing the method as claimed in claim 1, characterised in that it comprises a unit (9) provided with an outwardly directed tongue or flange (10) intended for abutment against the foot (4) of the rail (1), that the unit (9) is permanently secured to a cooperating sleeper (5) and pivotable about a shaft (6) located substantially perpendicular to the upper surface of the sleeper (5) and that the unit (9) is spring-influenced (11).
- Clamping means as claimed in claim 3, characterised in that the spring force (11) is such that satisfactory clamping effect is obtained when the tongue (10) abuts the foot (4) and when the rail (1) is trafficated.
- Clamping means as claimed in one or more of the preceding claims, characterised in that one end (7, 8) of the axis of oscillation of the unit (9) is grouted or bolted into the cooperating sleeper (5).
- Clamping means as claimed in one or more of the preceding claims, characterised in that one end of the axis of oscillation (6) of the unit (9) is secured to a plate (15) permanently applied on the sleeper (5) by means of a screw joint (16), for instance.
- Clamping means as claimed in one or more of the preceding claims, characterised in that the spring force is obtained, for instance, from a helical spring (11), a laminated spring, a cup spring, a ring spring or an Archimedes spring arranged about said axis of oscillation (6), one end of the helical spring abutting against the unit (9) and the other abutting against a surface (12) at the upper end of the axis of oscillation (6).
- Clamping means as claimed in one or more of the preceding claims, characterised in that a snap device is arranged for the unit (9) when its tongue (10) is in contact with the foot (4) of the rail.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT91850184T ATE101888T1 (en) | 1990-07-19 | 1991-07-04 | FASTENER WITH THRESHOLD. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9002462A SE509038C2 (en) | 1990-07-19 | 1990-07-19 | Procedure for attaching a rail to a screen and clamping device to enable the method |
SE9002462 | 1990-07-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0468945A1 true EP0468945A1 (en) | 1992-01-29 |
EP0468945B1 EP0468945B1 (en) | 1994-02-23 |
Family
ID=20380024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91850184A Expired - Lifetime EP0468945B1 (en) | 1990-07-19 | 1991-07-04 | Clamping means and sleeper assembly |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0468945B1 (en) |
AT (1) | ATE101888T1 (en) |
DE (1) | DE69101229T2 (en) |
ES (1) | ES2049541T3 (en) |
RU (1) | RU2052556C1 (en) |
SE (1) | SE509038C2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993023623A1 (en) * | 1992-05-13 | 1993-11-25 | Harms & Haffke Gmbh & Co. | System for securing rails on the sole plates of a railway track |
WO2007065517A1 (en) * | 2005-12-07 | 2007-06-14 | Db Netz Ag | Fixing means for fixing railway lines to sleepers or stretches of track |
US7793857B2 (en) | 2005-12-07 | 2010-09-14 | Db Netz Ag | Fixing means for fixing railway lines to sleepers or stretches of track |
EP3346054B1 (en) | 2017-01-10 | 2021-12-01 | Schwihag Ag | Tension clamp and rail fastening system for fastening railway rails |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10241851A1 (en) | 2002-09-09 | 2004-03-18 | Basf Drucksysteme Gmbh | Production of flexographic printing plates, comprises heating exposed flexographic printing element, and removal of softened, unpolymerized parts of relief-forming layer |
WO2005116339A1 (en) * | 2004-05-25 | 2005-12-08 | Obschestvo S Ogranichennoi Otvetstvennostiyu Sovmestnoe Rossysko-Amerikanskoe Predpriyatie'tehnologiya Xxi Veka' | Provisional rail fastening |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1562458A (en) * | 1925-06-25 | 1925-11-24 | Bethlehem Steel Corp | Metallic railway tie |
US3018967A (en) * | 1953-03-12 | 1962-01-30 | Khalil Muhammad | Method and means for the installation of rail track |
GB959113A (en) * | 1961-11-29 | 1964-05-27 | Toledo Woodhead Springs Ltd | Improvements in or relating to clipping devices for railway rails |
-
1990
- 1990-07-19 SE SE9002462A patent/SE509038C2/en not_active IP Right Cessation
-
1991
- 1991-07-04 AT AT91850184T patent/ATE101888T1/en active
- 1991-07-04 EP EP91850184A patent/EP0468945B1/en not_active Expired - Lifetime
- 1991-07-04 ES ES91850184T patent/ES2049541T3/en not_active Expired - Lifetime
- 1991-07-04 DE DE69101229T patent/DE69101229T2/en not_active Expired - Fee Related
- 1991-07-18 RU SU915001130A patent/RU2052556C1/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1562458A (en) * | 1925-06-25 | 1925-11-24 | Bethlehem Steel Corp | Metallic railway tie |
US3018967A (en) * | 1953-03-12 | 1962-01-30 | Khalil Muhammad | Method and means for the installation of rail track |
GB959113A (en) * | 1961-11-29 | 1964-05-27 | Toledo Woodhead Springs Ltd | Improvements in or relating to clipping devices for railway rails |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993023623A1 (en) * | 1992-05-13 | 1993-11-25 | Harms & Haffke Gmbh & Co. | System for securing rails on the sole plates of a railway track |
WO2007065517A1 (en) * | 2005-12-07 | 2007-06-14 | Db Netz Ag | Fixing means for fixing railway lines to sleepers or stretches of track |
US7793857B2 (en) | 2005-12-07 | 2010-09-14 | Db Netz Ag | Fixing means for fixing railway lines to sleepers or stretches of track |
EP3346054B1 (en) | 2017-01-10 | 2021-12-01 | Schwihag Ag | Tension clamp and rail fastening system for fastening railway rails |
Also Published As
Publication number | Publication date |
---|---|
ATE101888T1 (en) | 1994-03-15 |
DE69101229T2 (en) | 1994-06-01 |
SE9002462L (en) | 1992-01-20 |
SE509038C2 (en) | 1998-11-30 |
ES2049541T3 (en) | 1994-04-16 |
SE9002462D0 (en) | 1990-07-19 |
DE69101229D1 (en) | 1994-03-31 |
RU2052556C1 (en) | 1996-01-20 |
EP0468945B1 (en) | 1994-02-23 |
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