CA2381686C - A method of renewing damaged sleepers of a track - Google Patents
A method of renewing damaged sleepers of a track Download PDFInfo
- Publication number
- CA2381686C CA2381686C CA002381686A CA2381686A CA2381686C CA 2381686 C CA2381686 C CA 2381686C CA 002381686 A CA002381686 A CA 002381686A CA 2381686 A CA2381686 A CA 2381686A CA 2381686 C CA2381686 C CA 2381686C
- Authority
- CA
- Canada
- Prior art keywords
- rail
- sleeper
- base
- base plate
- track
- 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 - Fee Related
Links
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- Machines For Laying And Maintaining Railways (AREA)
- Railway Tracks (AREA)
Abstract
Before renewing a damaged sleeper of a track, a respective fastener (35) having a contact nose (51) provided for application onto a rail base (52) is inserted into a mounting hole (49) in both sections, respectively adjoining the rail base (52) of a rail (23), of a base plate (39).
Thereafter, the fastener (35) is welded to the base plate (39) so that the latter remains in its correct position with respect to the rail (23) during the sleeper renewal operation. Alternatively, the fastener (35) may be a magnet (57) temporarily connecting the base plate (39) to the rail base (52).
Thereafter, the fastener (35) is welded to the base plate (39) so that the latter remains in its correct position with respect to the rail (23) during the sleeper renewal operation. Alternatively, the fastener (35) may be a magnet (57) temporarily connecting the base plate (39) to the rail base (52).
Description
A METHOD OF RENEWING DAMAGED SLEEPERS OF A TRACK
The invention relates to a method of renewing damaged sleepers of a track, wherein base plates, positioned between a rail base of a rail and a sleeper and having mounting holes for the passage of fasteners, are fixed to the rail base for establishing a connection from the time of removal of the damaged sleeper until the insertion of a new sleeper.
According to US 5 617 795, there is known a pincer-like device for gripping base plates which are pressed against the rail base of a rail during the sleeper exchanging operation. A similar device is also described by US 5 048 424, in which the base plates are temporarily fixed by magnets arranged on a cart mobile on the track by means of flanged rollers.
It is further known from US 6 158 353 to connect the base plates to the rail base by provisionally welding rail spikes thereto.
The object of the present invention is to create a method of the specified kind with which it is possible to perform a sleeper renewal operation in a simplified manner.
According to the invention, this object is achieved with a method described at the beginning in that, before the removal of the damaged sleeper, a fastener having a contact nose provided for application onto the rail base is inserted into a mounting hole in both sections of the base plate respectively adjoining the rail base and is connected to the base plate.
The invention relates to a method of renewing damaged sleepers of a track, wherein base plates, positioned between a rail base of a rail and a sleeper and having mounting holes for the passage of fasteners, are fixed to the rail base for establishing a connection from the time of removal of the damaged sleeper until the insertion of a new sleeper.
According to US 5 617 795, there is known a pincer-like device for gripping base plates which are pressed against the rail base of a rail during the sleeper exchanging operation. A similar device is also described by US 5 048 424, in which the base plates are temporarily fixed by magnets arranged on a cart mobile on the track by means of flanged rollers.
It is further known from US 6 158 353 to connect the base plates to the rail base by provisionally welding rail spikes thereto.
The object of the present invention is to create a method of the specified kind with which it is possible to perform a sleeper renewal operation in a simplified manner.
According to the invention, this object is achieved with a method described at the beginning in that, before the removal of the damaged sleeper, a fastener having a contact nose provided for application onto the rail base is inserted into a mounting hole in both sections of the base plate respectively adjoining the rail base and is connected to the base plate.
With this, it is possible in a very simple way to establish a connection of the base plate with the rail base, a connection which, in a particularly advantageous manner, does not have to be rerrfoved after the new sleeper is inserted. This is possible because, out of a total of four mounting holes provided on each longitudinal rail side, one is not used for connecting the base plate to the sleeper.
The object according to the invention can also be achieved with the additional features, wherein a quick connection can be established by using a magnet for connecting the base plate to the rail base, without having to insert the magnetic fastener into a mounting hole of the base plate in a precise centering operation.
Additional advantages and features of the invention become apparent from the drawing.
The invention will be described in more detail below with reference to embodiments represented in the drawing in which Figs. 1 and 2 show a side view and top view, respectively, of a machine for renewing sleepers of a track, Fig. 3 shows a cross section of a rail connected to a base plate, Fig. 4 shows a top view of the base plate, and Figs. 5 to 7 show partial views of further variants of fasteners.
A machine 1, shown in Figs. 1 and 2, for removing individual damaged sleepers 2 and for inserting new sleepers 3 comprises a machine frame supported at the ends on two on-track undercarriages 4. For the purpose of advancing the machine, a motive drive 6 is provided which, like the remaining drives of the machine 1, may be actuated by means of a central energy unit 7. A central control device 9 is located in an operator's cabin 8 arranged immediately above the working units for better visibility thereof.
The object according to the invention can also be achieved with the additional features, wherein a quick connection can be established by using a magnet for connecting the base plate to the rail base, without having to insert the magnetic fastener into a mounting hole of the base plate in a precise centering operation.
Additional advantages and features of the invention become apparent from the drawing.
The invention will be described in more detail below with reference to embodiments represented in the drawing in which Figs. 1 and 2 show a side view and top view, respectively, of a machine for renewing sleepers of a track, Fig. 3 shows a cross section of a rail connected to a base plate, Fig. 4 shows a top view of the base plate, and Figs. 5 to 7 show partial views of further variants of fasteners.
A machine 1, shown in Figs. 1 and 2, for removing individual damaged sleepers 2 and for inserting new sleepers 3 comprises a machine frame supported at the ends on two on-track undercarriages 4. For the purpose of advancing the machine, a motive drive 6 is provided which, like the remaining drives of the machine 1, may be actuated by means of a central energy unit 7. A central control device 9 is located in an operator's cabin 8 arranged immediately above the working units for better visibility thereof.
Located between the two on-track undercarriages 4 is a sleeper exchanging device 10, vertically and transversely displaceable by drives, which is designed for displacement in the longitudinal direction of the machine on a longitudinal guide 12, connected to the machine frame 5, with the aid of a drive 11. Two grippers 13 squeezable towards one another in the longitudinal direction of the machine are connected to the sleeper exchanging device 10 far gripping the old sleepers 2 in the sleeper end region. Provided as a further working unit is a ballast clearing device 15 equipped with transversely and vertically adjustable clearing members 14. The ballast clearing device 15 is mounted on a tool frame 16 which is mobile by means of an on-track undercarriage 17 on the track 18 in the region of the sleeper exchanging device 10.
The end region of the tool frame 16 opposite the on-track undercarriage 17 is articulatedly supported on the machine frame 5 in the area of a hinging point 19 and connected to a longitudinal displacement drive 20. The on-track undercarriage 17 mounted on the tool frame 16 and the immediately adjacent ballast clearing device 15 are arranged between the sleeper exchanging device 10 and the hinging point 19 which is mounted for displacement in the longitudinal direction of the machine on longitudinal guides 2'I connected to the machine frame 5. In the region of the clearing member 14, a track lifting device 25 is articulatedly connected to the tool frame 16 and comprises a lifting element 24 laterally applicable to a rail 23 of the track 18. Additionally, a lifting drive 26 is hinged to each longitudinal side of the tool frame 16, with an upper end of said lifting drive 26 being connected to a carriage 27 which is mounted on a guide 28 of the machine frame 5 for displacement in the longitudinal direction thereof.
A vertically adjustable tamping unit 29 is located underneath the operator's cabin 8 in the region of each rail 23.
~' CA 02381686 2005-O1-21 Provided for the common depositing of the old sleepers 2 together with the new sleepers 3 is a sleeper depositing device 30 arranged centrally with regard to the transverse direction of the machine. In the region of the sleeper depositing device 30, the machine frame 5 has an opening for the passage of a sleeper gripper 31.
Located at the front end - with regard to an operating direction indicated by an arrow 40 - of the machine 1, underneath an operator°s cabin 32, is a welding robot 33 vertically, longitudinally and transversely adjustable by drives and suitable for spot welding. A
vertically adjustable magnetic gripper 22 is associated with the welding robot 33. A container 34 holds fasteners 35.
In the course of a sleeper renewal operation, two fasteners 35 are grasped by an operator situated in the operator's cabin 32 and inserted on each longitudinal rail side respectively into an empty mounting hole 49 of the base plate 39 (see Fig. 3), whereby the contact nose 51 comes to lie on an adjoining edge of the rail base 52 of the rail 23. As a next step, the welding robot 33 carries out a spot weld 38 for welding the fastener 35 to the base plate 39. Subsequently, the rail spikes are pulled by means of a spike pulling apparatus, not shown in detail, from the sleeper to be renewed.
Thereafter, the old sleeper 2 is pulled laterally from the track 18 with the aid of the sleeper exchanging device 10 while the rails 23 ace raised slightly by the track lifting device 25. During this, the associated base plates 39 remain attached to the rails 23 in their original position - as visible in Fig. 3 - due to the fasteners 35. Following this, a new sleeper 3 is inserted under the exposed base plates 39, again with the aid of the sleeper exchanging device 10. After tamping of the new sleeper 3 inserted into the track 18, rail spikes are driven through the free mounting holes 49 of the base plate 39 into the new sleeper 3 to establish a final connection between rail and sleeper.
From Figs. 3 and 4 it is evident that a spike-shaped fastener 35 with a contact nose 51 resting on the rail base 52 is inserted in only one mounting hole 49 of the base plate 39 per longitudinal rail side.
Expediently, the fastener 35 can be produced by cutting off the section adjoining the head part of an old, unusable rail spike. The length of the fastener 35 is such that the lower end 54 thereof does not project beyond a lower plane 50 of the base plate 39.
A variant of the fastener 35 according to Fig. 5 comprises a dowel 55 which is inserted together with the fastener 35 into the mounting hole 49 of the base plate 39. The dowel 55 as well as a lower section 56 of the fastener 35 are shaped tapering towards the bottom. Since the diameter of the lower section 55 is dimensioned slightly larger than the dowel 55, a non-positive connection with the base plate 39 results automatically upon pushing the fastener 35 in.
A fastener 35 visible in Fig. 6 consists of two magnets 57, spaced from one another in the transverse direction of the track, which are connected to one another by means of a handle 58. For establishing a temporary connection between the base plate 39 and the rail 23, the fastener 35 is placed by the operator in such a way that one of the magnets 57 rests on the base plate 39 between the mounting holes 49 or the rail spikes arranged therein, while the second magnet 57 comes to lie on the rail base 52. After the final connection of the base plate 39 to the new steeper has been carried out, the fasteners 35 are removed again.
Fig. 7 shows a further variant of a fastener 35 having a magnet 57, positioned on the base plate 39, which is connected to a contact nose 51 provided for application onto the rail base 52. A handle 58 facilitates both the correct positioning of the fastener 35 and the removal thereof.
The end region of the tool frame 16 opposite the on-track undercarriage 17 is articulatedly supported on the machine frame 5 in the area of a hinging point 19 and connected to a longitudinal displacement drive 20. The on-track undercarriage 17 mounted on the tool frame 16 and the immediately adjacent ballast clearing device 15 are arranged between the sleeper exchanging device 10 and the hinging point 19 which is mounted for displacement in the longitudinal direction of the machine on longitudinal guides 2'I connected to the machine frame 5. In the region of the clearing member 14, a track lifting device 25 is articulatedly connected to the tool frame 16 and comprises a lifting element 24 laterally applicable to a rail 23 of the track 18. Additionally, a lifting drive 26 is hinged to each longitudinal side of the tool frame 16, with an upper end of said lifting drive 26 being connected to a carriage 27 which is mounted on a guide 28 of the machine frame 5 for displacement in the longitudinal direction thereof.
A vertically adjustable tamping unit 29 is located underneath the operator's cabin 8 in the region of each rail 23.
~' CA 02381686 2005-O1-21 Provided for the common depositing of the old sleepers 2 together with the new sleepers 3 is a sleeper depositing device 30 arranged centrally with regard to the transverse direction of the machine. In the region of the sleeper depositing device 30, the machine frame 5 has an opening for the passage of a sleeper gripper 31.
Located at the front end - with regard to an operating direction indicated by an arrow 40 - of the machine 1, underneath an operator°s cabin 32, is a welding robot 33 vertically, longitudinally and transversely adjustable by drives and suitable for spot welding. A
vertically adjustable magnetic gripper 22 is associated with the welding robot 33. A container 34 holds fasteners 35.
In the course of a sleeper renewal operation, two fasteners 35 are grasped by an operator situated in the operator's cabin 32 and inserted on each longitudinal rail side respectively into an empty mounting hole 49 of the base plate 39 (see Fig. 3), whereby the contact nose 51 comes to lie on an adjoining edge of the rail base 52 of the rail 23. As a next step, the welding robot 33 carries out a spot weld 38 for welding the fastener 35 to the base plate 39. Subsequently, the rail spikes are pulled by means of a spike pulling apparatus, not shown in detail, from the sleeper to be renewed.
Thereafter, the old sleeper 2 is pulled laterally from the track 18 with the aid of the sleeper exchanging device 10 while the rails 23 ace raised slightly by the track lifting device 25. During this, the associated base plates 39 remain attached to the rails 23 in their original position - as visible in Fig. 3 - due to the fasteners 35. Following this, a new sleeper 3 is inserted under the exposed base plates 39, again with the aid of the sleeper exchanging device 10. After tamping of the new sleeper 3 inserted into the track 18, rail spikes are driven through the free mounting holes 49 of the base plate 39 into the new sleeper 3 to establish a final connection between rail and sleeper.
From Figs. 3 and 4 it is evident that a spike-shaped fastener 35 with a contact nose 51 resting on the rail base 52 is inserted in only one mounting hole 49 of the base plate 39 per longitudinal rail side.
Expediently, the fastener 35 can be produced by cutting off the section adjoining the head part of an old, unusable rail spike. The length of the fastener 35 is such that the lower end 54 thereof does not project beyond a lower plane 50 of the base plate 39.
A variant of the fastener 35 according to Fig. 5 comprises a dowel 55 which is inserted together with the fastener 35 into the mounting hole 49 of the base plate 39. The dowel 55 as well as a lower section 56 of the fastener 35 are shaped tapering towards the bottom. Since the diameter of the lower section 55 is dimensioned slightly larger than the dowel 55, a non-positive connection with the base plate 39 results automatically upon pushing the fastener 35 in.
A fastener 35 visible in Fig. 6 consists of two magnets 57, spaced from one another in the transverse direction of the track, which are connected to one another by means of a handle 58. For establishing a temporary connection between the base plate 39 and the rail 23, the fastener 35 is placed by the operator in such a way that one of the magnets 57 rests on the base plate 39 between the mounting holes 49 or the rail spikes arranged therein, while the second magnet 57 comes to lie on the rail base 52. After the final connection of the base plate 39 to the new steeper has been carried out, the fasteners 35 are removed again.
Fig. 7 shows a further variant of a fastener 35 having a magnet 57, positioned on the base plate 39, which is connected to a contact nose 51 provided for application onto the rail base 52. A handle 58 facilitates both the correct positioning of the fastener 35 and the removal thereof.
Claims (2)
1. A method of renewing damaged sleepers (2) of a track (18), wherein base plates (39), positioned between a rail base (52) of a rail (23) and a sleeper (2,3) and having mounting holes (49) for the passage of fasteners (35), are fixed to the rail base (52) for establishing a connection from the time of removal of the damaged sleeper (2) until the insertion of a new sleeper (3), characterized in that, before the removal of the damaged sleeper (2), a fastener (35) having a contact nose (51) provided for application onto the rail base (52) is inserted into a mounting hole (49) in both sections of the base plate (39) respectively adjoining the rail base (52) and is connected to the base plate (39).
2. A method according to claim 1, characterized in that the fastener (35) is welded to the base plate (39).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATGM283/2001 | 2001-04-11 | ||
| AT0028301U AT4465U3 (en) | 2001-04-11 | 2001-04-11 | METHOD FOR RENEWING DAMAGED SLEEPERS OF A TRACK |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2381686A1 CA2381686A1 (en) | 2002-10-11 |
| CA2381686C true CA2381686C (en) | 2006-12-12 |
Family
ID=3486414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002381686A Expired - Fee Related CA2381686C (en) | 2001-04-11 | 2002-04-10 | A method of renewing damaged sleepers of a track |
Country Status (2)
| Country | Link |
|---|---|
| AT (1) | AT4465U3 (en) |
| CA (1) | CA2381686C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114381975A (en) * | 2021-12-09 | 2022-04-22 | 张�林 | Railway equidistant sleeper laying device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1709731A (en) * | 1928-09-27 | 1929-04-16 | John A Mcgrew | Tie plate and rail fastener |
| US1710587A (en) * | 1928-10-01 | 1929-04-23 | John A Mcgrew | Tie plate and rail fastener |
| US3698324A (en) * | 1970-12-03 | 1972-10-17 | Mannix Construction Inc | Machine for inserting ties beneath a railroad track |
| US3780664A (en) * | 1972-05-30 | 1973-12-25 | Mannix Construction Inc | Machine for inserting ties beneath a railroad track |
| US5048424A (en) * | 1990-04-20 | 1991-09-17 | Harsco Corporation | Tie replacer and method |
| US5617795A (en) * | 1994-09-14 | 1997-04-08 | Harsco Corporation | Tie guide and plate holding apparatus |
| AT406276B (en) * | 1998-04-22 | 2000-03-27 | Plasser Bahnbaumasch Franz | METHOD FOR IMPLEMENTING A THRESHOLD RENEWAL |
-
2001
- 2001-04-11 AT AT0028301U patent/AT4465U3/en not_active IP Right Cessation
-
2002
- 2002-04-10 CA CA002381686A patent/CA2381686C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2381686A1 (en) | 2002-10-11 |
| AT4465U2 (en) | 2001-07-25 |
| AT4465U3 (en) | 2002-03-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20170410 |