Greasing sleeve

Abstract

A greasing device for a contact wire configured to be clamped into a conductor rail for supplying electrical energy to a pantograph of a rail vehicle is disclosed. The device comprises a basic body extending in longitudinal, transverse and vertical directions, a passage opening extending through the basic body for receiving and guiding the contact wire, and a supply line for introducing grease into the passage opening for application to the contact wire. The passage opening includes, downstream of the supply line, a nose located on an upper side of the passage opening and oriented toward the vertical direction. The nose is positioned to press the contact wire against a bottom side of the passage opening as the contact wire passes through the device, thereby promoting controlled distribution and application of grease onto the contact wire during installation. This arrangement facilitates reliable lubrication of the contact wire and improves insertion into the conductor rail.

Description

[0001] Fat cuff

[0002] Description

[0003] The present invention relates to a greasing device for a contact wire that can be clamped into a conductor rail for the electrical energy supply of a pantograph of a rail vehicle and a method for greasing a contact wire for the electrical energy supply of a pantograph of a rail vehicle.

[0004] From ES 2 409 085 A2, a greasing device according to the preamble of current claim 1 and a method according to the preamble of current claim 15 are known.

[0005] The object of the invention is to improve the known greasing device and the known method.

[0006] The problem is solved by the characteristics of independent claims. Preferred further developments are the subject of dependent claims.

[0007] According to one aspect of the invention, a greasing device for a contact wire clamped into a conductor rail for supplying electrical power to a pantograph of a rail vehicle comprises a base body extending in a longitudinal direction, a transverse direction perpendicular to the longitudinal direction, and a vertical direction perpendicular to both the longitudinal and transverse directions; a through-opening penetrating the base body from a front face (viewed in the longitudinal direction) to a rear face (viewed in the longitudinal direction), through which the contact wire can be inserted in the longitudinal direction; and a supply line leading into the through-opening for introducing grease suitable for application to the contact wire. The shape of the base body can be arbitrary and is not limited to the shape of a cuboid or the like.

[0008] According to the invention, the through-opening, viewed in the longitudinal direction after the supply line, has on an upper side viewed in the vertical direction a nose oriented against the vertical direction, which is designed to press the contact wire against a bottom side of the through-opening viewed in the vertical direction, so that a groove is cut into the grease applied to the contact wire.

[0009] The underlying principle of the described device is that the grease applied to the contact wire should protect it from environmental and other weathering influences. Because the conductor rail is generally made of a material that has a very high standard potential difference to the contact wire material in the electrochemical series, water accumulation in the area of ​​the clamping point between the conductor rail and the contact wire leads very quickly to corrosion.

[0010] The aforementioned greasing device allows grease to be applied to the contact wire at the clamping point between the conductor rail and the overhead wire, thus preventing water accumulation in this area. However, a problem arises because the grease is applied completely to the contact wire and is then, for example, wiped off by the pantograph of a following rail vehicle when it draws current. This not only leads to an uneconomically high consumption of grease, but the wiped-off grease also drips down and contaminates the surrounding area.

[0011] The lubrication device addresses this by removing grease from areas of the contact wire that are not connected to the clamping points. To achieve this, the nose of the device pushes the contact wire towards the underside of the opening, preventing grease from being applied to the point where the pantograph of the rail vehicle is intended to engage. The area of ​​the contact wire between the two clamping points also remains largely grease-free.

[0012] In a further development of the described greasing device, the through-opening is arranged in a groove formed in a guide body section of the base body and covered by a cover part of the base body. In this way, the contact wire can be easily inserted into the base body, even if it is already suspended in an overhead line system.

[0013] In a further development of the specified greasing device, the supply line is routed through the cover part. The cover part can be positively connected to the guide body part.

[0014] In another embodiment of the described greasing device, the through-opening has a funnel-shaped section in which the opening width, viewed in the transverse direction, tapers towards the supply line along the longitudinal direction. In this way, when the contact wire is pulled through the through-opening, the grease is pressed against the contact wire, resulting in a homogeneous application of grease at the points where the grease is to be applied to the contact wire.

[0015] In a further development of the specified greasing device, the funnel-shaped area is designed as an insert that can be placed in the through-opening, so that the funnel-shaped area can be adapted to guide wires of different thicknesses.

[0016] In a further embodiment of the described greasing device, a guide sleeve is arranged longitudinally in front of the funnel-shaped section, which positions the contact wire at least in the transverse direction. In this way, the contact wire can be positioned centrally in the through-opening, so that the grease application on the left side of the contact wire (viewed in the transverse direction) is the same thickness as the grease application on the right side of the contact wire (viewed in the transverse direction). In a particular embodiment of the described greasing device, the guide sleeve is composed of two guide sleeve halves that can be joined in the transverse direction.The two parts of the guide sleeve, when the contact wire is inserted into the groove as described above, are initially placed against the contact wire in a simple manner, whereby tolerances due to inaccurate positioning of the two guide sleeve halves relative to each other have an effect in the direction of travel, but not in the transverse direction relevant for positioning the contact wire.

[0017] In a further development of the described greasing device, the nose is arranged in a scraper sleeve positioned longitudinally after the funnel-shaped section. The scraper sleeve can be adjusted to different wire diameters, so that the nose can always be optimally positioned relative to the contact wire being greased.

[0018] In a preferred embodiment of the described greasing device, the stripper sleeve is composed of two stripper sleeve halves that can be joined vertically. In this way, the contact wire can be inserted between the two stripper sleeve halves, and the nose can be pressed onto the contact wire by the aforementioned frictional connection of the cover part to the guide body part.

[0019] In a further development, the specified greasing device comprises two deflection rollers arranged longitudinally in front of the front of the base body, each rotatable about an axis of rotation directed in the vertical direction and spaced apart from each other in the transverse direction at the same height in order to deflect the contact wire into the through opening.

[0020] In a particular embodiment of the described greasing device, the through-opening on the bottom side is adapted to a shape of the contact wire on a wire underside that can be oriented towards the pantograph. This ensures that the contact wire fits snugly into the through-opening with its underside facing the pantograph, so that this side is not lubricated. In another particular embodiment, the described greasing device includes a connecting coupling, held longitudinally on the front of the base body, for attaching a pulling device designed to pull the base body longitudinally. In this way, the described greasing device can be easily pulled over the contact wire, which can then be lubricated, for example, in an overhead line system.

[0021] In a particularly preferred embodiment of the described greasing device, the connecting coupling comprises two retaining elements which are held axially symmetrically to the base body with respect to the longitudinal direction. In this way, the described greasing device can be pulled over the contact wire without tilting.

[0022] According to a further aspect of the invention, a method for greasing a contact wire for the electrical power supply of a pantograph of a rail vehicle comprises the steps of inserting the contact wire into a through-opening of a base body extending in a longitudinal direction, a transverse direction perpendicular to the longitudinal direction and a vertical direction perpendicular to the longitudinal direction and perpendicular to the transverse direction, wherein the through-opening penetrates the base body in the longitudinal direction from a front to a rear side viewed in the longitudinal direction, introducing grease into the through-opening via a supply line running perpendicular to the through-opening, and pulling the base body in the longitudinal direction.

[0023] According to the invention, the method further comprises the step of wiping off grease, which is applied to the contact wire drawn through the base body, on an upper side of the contact wire as seen in the vertical direction.

[0024] The properties, features, and advantages of this invention described above, as well as the manner in which they are achieved, will become clearer in connection with the following description of the exemplary embodiments, which are explained in more detail in conjunction with the drawing. The drawing shows:

[0025] Fig. 1 shows a schematic view of a track with a power rail in which a contact wire is held.

[0026] Fig. 2 shows a schematic view of a grease sleeve for greasing the contact wire from Fig. 1 from a first perspective.

[0027] Fig. 3 is a schematic view of the fat cuff from Fig. 2 from a second perspective.

[0028] Fig. 4 is a schematic view of part of the fat cuff from Fig. 2 from the second perspective.

[0029] Fig. 5 shows a sectional view of the fat cuff from Fig. 2 at a first location,

[0030] Fig. 6 shows a sectional view of the fat cuff from Fig. 2 at a second location.

[0031] Fig. 7 shows a sectional view of the fat cuff from Fig. 2 at a third location, and

[0032] Fig. 8 shows a schematic view of another part of the fat cuff from Fig. 2 from a third perspective.

[0033] The figures use identical technical elements with the same reference symbols and describe them only once. The figures are purely schematic and, above all, do not represent the actual geometric relationships.

[0034] Reference is made to Fig. 1, which shows a driving path 2 extending in a direction of travel 1 or longitudinal direction 1 with a

[0035] Track 3 shows a track on which an electrically driven train (not shown) can move. For the electrical power supply of the train, a current rail 4, also extending in the longitudinal direction 1, is arranged at a height above track 3 (not further referenced). The train can draw electrical current from this rail using a pantograph (not further shown) in a manner known per se.

[0036] The busbar 4 is suspended from a support, which is shown in Fig. 1 in the exemplary form of a ceiling 5. The ceiling 5 could, for example, be part of a tunnel or a bridge. The busbar 4 can be held at a distance 6 from the ceiling 5 by means of suspension devices (not shown).

[0037] In Fig. 1, the profile 7 of the busbar 4 is shown enlarged.

[0038] Viewed in profile 7, the conductor rail 4 is axially symmetrical about a profile axis 8. The profile axis 8 runs parallel to a vertical direction 9 of the track 2. Viewed in the vertical direction 9, a transverse arm 10 is located on the upper side of the conductor rail 4. From this transverse arm 10, two clamping arms 12 extend in a transverse direction 11, perpendicular to the longitudinal direction 1 and perpendicular to the vertical direction 9, spaced apart from each other and opposite to the vertical direction 9. A clamping arm 13 is attached to the end of each clamping arm 12 opposite the transverse arm 10, and a contact wire 14 is held between these clamping arms 12.

[0039] The conductor rail 4 shown in Fig. 1 is usually composed of a plurality of conductor rail sections, which, as seen in profile 7 of Fig. 1, are precisely aligned with one another at their ends via butt plates 15. Mutual alignment is achieved by a positive locking mechanism acting in the vertical direction 9 between the butt plates 15 and the conductor rail sections, which is designed in Fig. 1 as a tongue-and-groove connection 16. Screws 17 can be screwed into the butt plates 15 to fix the individual conductor rail sections to one another. To clamp the contact wire 14 between the clamping arms 13, guideways 18 extending in or against the transverse direction 11 are connected at a junction between the clamping arms 13 and the tension arms 12. A guide carriage (not shown) can move along these guideways.

[0040] If water accumulates at the resulting terminals 19, local cells that trigger redox reactions are formed. Due to the choice of materials in commercially available busbars, the distance between the metals at the terminals 19 in the electrochemical series is sufficiently large to cause weathering phenomena when water accumulates there. Various approaches have already been proposed to reduce water accumulation in order to prevent the formation of local cells, for example according to

[0041] WO 2014 / 067989 Al with drainage openings. However, the occurrence of water can never be completely avoided, which is why it is a sensible approach to actively protect the clamping points 19 from water.

[0042] For this purpose, a greasing device 20, also called a grease sleeve, shown in Figs. 2 and 3, is proposed, which coats the contact wire 14 with grease in the area of ​​the clamping points 19 immediately before clamping it in the conductor rail 4 by the threading carriage, so that no water can reach the clamping points 19 after the contact wire 14 has been clamped in the conductor rail 4, which would bridge the conductor rail 4 and the contact wire 14 and thus form local elements.

[0043] The greasing device 20 comprises a base body 21, which consists, among other things, of a guide body part 22 and a cover part 23.

[0044] A groove 24 is formed on the upper surface of the guide body 22, as viewed in the vertical direction 9, and extends in the longitudinal direction 1. The groove 24 is open at the end faces of the guide body 22 (not further referenced) as viewed in the longitudinal direction 1, so that the contact wire 14 can be inserted into the groove 24. The cover part 23 is placed on the upper surface of the guide body 22 as viewed in the vertical direction 9, so that the groove 24 is closed and a through-opening 25 is formed through the base body 21.

[0045] To ensure the cover part 23 is positioned precisely on the guide body 22, a positioning projection 26 can be formed on each of the end faces of the base body 21 that are not further referenced, viewed in the longitudinal direction 1. These positioning projections 26 engage positively in the groove 24 when the cover part 23 is placed on the guide body 22, viewed in the transverse direction 11. The cover part 23, once placed on the guide body 22, is then force-fitted to the guide body 22 by means of three screw connections 27. Specifically, one screw connection 27 is arranged on the rear side of the base body 21, viewed in the transverse direction 11, while two screw connections 27 are arranged on the front side.

[0046] Each screw connection 27 comprises a fastening strip 28 extending in the longitudinal direction 1, wherein the fastening strips 28 of the screw connections 27 are formed integrally on the front face of the base body 21 as viewed in the transverse direction 11. The fastening strips 28 are fastened to the guide body part 22 by means of screws 29. A threaded rod 30, pivotably held about the longitudinal direction 1, adjoins an end face of each fastening strip 28 as viewed in the longitudinal direction 1 and can be pivoted into a fork element 31 on the cover part 23. In the state in which the threaded rods 30 are pivoted into the fork elements 31, a wing nut 32 is screwed onto the respective fork element 31 towards the respective mounting strip 28, so that the cover part 23 is pressed onto the guide body part 22, which establishes the aforementioned force-fit connection.To prevent the wing nuts 32 from being lost when the greasing device 20 is disassembled, movement limiters, which are not further referenced for clarity, can be provided at the upper end of the threaded rods 30 as viewed in the vertical direction 9. Before discussing in more detail the insertion of the contact wire 14 into the groove 24 and thus the through-opening 25, as well as the application of grease to the contact wire 14 therein, it will be briefly explained how the greasing device 20 is pulled over the contact wire 14, which is inserted into the through-opening 25, during operation.

[0047] The Flierzu greasing device 20 has a balance beam 33, also called a balance point, oriented in the transverse direction 11, on the front end face of the base body 21 as viewed in the longitudinal direction 1. At the ends of the balance beam 33 as viewed in the transverse direction 11, there are retaining elements in the form of eye bolts 34 oriented in the longitudinal direction 1. The balance beam 33 and the eye bolts 34 together form a connecting element 35, via which the greasing device 20 can be connected to a pulling mechanism and pulled along the guide wire 14 in the longitudinal direction 1.

[0048] On the balance beam 33, two deflection rollers 36 are rotatably mounted between the two eye bolts 34 about a pivot axis 37, which are aligned in the vertical direction 9. Furthermore, the deflection rollers 36 are arranged transversely 11 with a roller spacing 38 from each other. The deflection rollers 36 are arranged, viewed from an underside of the base body 21 as seen in the vertical direction 9, at a height that is not further referenced, which is equal to a height of the passage opening 25, also not referenced, so that when the lubrication device 20 is pulled in a curve of the track 3, the contact wire 14 is guided over the deflection rollers 36 and inserted into the passage opening 25 in a predetermined rotational position about the longitudinal direction 1. The deflection rollers 36 are each held on a swivel arm 39, so that the position of the deflection rollers 36 in the transverse direction 11 can be adjusted to transverse movements of the contact wire 14.To keep the roller spacing 38 constant, the swivel arms 39 are connected to each other via a connecting rod 40.

[0049] When the greasing device 20 is pulled over the contact wire 14, the contact wire 14 is coated with the aforementioned grease. This grease is introduced into the through-opening 25 of the greasing device 20 via a supply line 41. The supply line 41 runs through a connection socket 42, as arranged on the upper side of the cover part 23 as viewed in the vertical direction 9. A feed line (not shown) can be connected to the connection socket 42, which feeds the grease from a source (not shown) into the supply line 41. A valve can be arranged between the source and the connection socket 42 to control the amount of grease supplied. The grease that thus accumulates in the through-opening 25 is forced onto the contact wire 14, thereby applying the grease.

[0050] In practice, the contact wire 14 is very long and, after lubrication, is immediately clamped in the conductor rail 4 via the threading carriage during installation on the track 2. Therefore, it is difficult to thread the contact wire, viewed in the longitudinal direction 1, into the through-opening 25 from the end. The application of the lubrication device 20 to the contact wire 14 is therefore implemented in a more efficient manner in the present embodiment. Furthermore, the lubrication device 20 allows for a particularly effective application of grease to the contact wire 14. This will be discussed in more detail below with reference to Figures 4 to 8.

[0051] The through-opening 25 has a funnel-shaped area 42 ' , in which an opening width 43 of the passage opening 25 tapers in the transverse direction 11 opposite to the longitudinal direction 1. This taper occurs in at least one section of the funnel-shaped area 42 'instead, which connects to the point where the supply line 41 enters the through-opening 25. Is the funnel-shaped area 42 ' When filled with grease and the contact wire 14 moves against the longitudinal direction 1 through the through-opening 25, the grease accumulates at the end of the funnel-shaped area 42. 'and is pressed onto the surface of the contact wire 14. In this way, the grease is applied homogeneously to the contact wire 14. The grease supply from the supply line 41 can be adjusted, for example, via the aforementioned valve, so that no excess grease drips from the greasing device 20. That is, if the amount of grease supplied via the supply line 41 is greater than the amount of grease applied to the contact wire 14, the excess grease will drip out of the greasing device 20. At the start of operation of the greasing device 20, the aforementioned valve should therefore be set precisely to this position and slowly turned back until no more grease drips from the greasing device 20. This ensures optimal grease application.

[0052] To enable the funnel-shaped section 42 to be adapted to contact wires 14 of different conductor cross-sections, the funnel-shaped section 42 is designed as an insert that can be inserted into the groove 24. In this way, the funnel-shaped section 42 can be easily adapted by replacing the insert.

[0053] Viewed in the longitudinal direction 1 in front of the funnel-shaped area 42 ' A guide sleeve 44 is arranged in the through-opening 25. The guide sleeve 44 has an unreferenced passage in which the contact wire 14 can be positively held in the vertical direction 9 and the transverse direction 11. In this way, the guide sleeve 44 corrects the positioning of the contact wire 14 upon entering the funnel-shaped area 42. 'at a specific angular position around the longitudinal direction 1 and in the transverse direction 11, so that the pressure of the grease acts uniformly on both sides when applied in the transverse direction 11. The aforementioned deflection rollers 36 thus roughly pre-position the contact wire 14, while the guide sleeve 44 performs fine positioning and guides the contact wire 14 precisely in the center and in a fixed rotational position into the funnel-shaped area 42. ' introduces.

[0054] For easy placement on the contact wire 14, the guide sleeve 44 is constructed from a first guide sleeve half 45 and a second guide sleeve half 46, which can be assembled by bringing them together in or against the transverse direction 11 to the guide sleeve 44. The assembled guide sleeve 44 is held in a guide sleeve rail 47 in the guide body part 22.

[0055] In operation, the contact wire 14 is inserted into one of the guide sleeve halves 45, 46, and the guide sleeve 44 is closed by placing the corresponding other guide sleeve half 46, 45 on top in or against the transverse direction 11. The assembled guide sleeve 44 can now be inserted into the guide sleeve rail 47.

[0056] Viewed in the longitudinal direction 1, a wiper sleeve 48 is arranged on the side of the funnel-shaped area 42 opposite the guide sleeve 44. Analogous to the guide sleeve 44, the wiper sleeve 48 has a passage in which, however, viewed in the vertical direction 9, a lug 49 is arranged on the upper side, oriented opposite to the vertical direction 9, and presses against the upper side of the contact wire 14 as viewed in the vertical direction 9. Viewed in the transverse direction 11, cavities are formed to the left and right of the lug 49 through which grease can pass through the wiper sleeve 48 and be applied to the contact wire 14. The lug width 50 of the lug 49, viewed in the transverse direction 11, is selected such that the cavities are located at the points on the contact wire 14 where the clamping points 19 are provided when clamping it in the conductor rail 4.

[0057] The wiper sleeve 49 is composed of a lower wiper sleeve half 51 and an upper wiper sleeve half 52, which can be assembled by bringing them together in or against the vertical direction 9. For mounting the lubrication device 20, the lower wiper sleeve half 51 is inserted into a corresponding wiper sleeve rail 53 in the guide body part 22, as well as the funnel-shaped area 42. ' The forming insert is placed in the groove 24. Then the guide wire 14, around which the guide sleeve 44 is placed in the manner described above, is inserted into the lower stripper sleeve half 51 and the funnel-shaped area 42. 'The guide sleeve 44 is inserted into the guide sleeve rail 47 as described above. The upper wiper sleeve half 52 is then inserted into the wiper sleeve rail 53 to assemble the wiper sleeve 48. The grease fitting 20 in this assembly state is shown in Fig. 4. Finally, the cover part 23 is placed onto the guide body part 22 as described above and screwed on. Grease can now be introduced via the supply line 41 into the through-opening 25 in the area of ​​the funnel-shaped section 42 and applied to the contact wire 14 as already described. To largely prevent grease from being applied to the contact point of the pantograph of the contact wire 14, the through-opening 25 is adapted to the shape of the contact wire 14 on a bottom side 54 as seen in the direction 9.In this way, the contact wire 14 is positively engaged at the bottom side 54 of the through-opening 25 in the vertical direction 9 and in the transverse direction 11, so that no grease can reach this point. The nose 49 presses the contact wire 14 against the bottom side 54, thus ensuring that the contact wire 14 remains grease-free at the contact point with the pantograph. This ensures that the grease on the contact wire 14 is actually only present in the area of ​​the...

[0058] Clamping points 19 and nowhere else is it applied.

[0059] In the figures, elements with crossed hatching represent components made of plastic. Crossed hatching of the same type indicates the same type of plastic. The lower half of the wiper sleeve 51 and the upper half 52 differ in their plastic material. Preferably, the upper half 52 is made of a softer plastic material than the lower half 51.

Claims

Patent claims 1. Lubricating device (20) for a contact wire (14) that can be clamped into a conductor rail (4) for the electrical power supply of a pantograph of a rail vehicle, comprising: a basic body (21) extending in a longitudinal direction (1), a transverse direction (11) perpendicular to the longitudinal direction (1) and a vertical direction (9) perpendicular to the longitudinal direction (1) and perpendicular to the transverse direction (11), a through-opening (25) penetrating the base body (21) from a front side viewed in the longitudinal direction (1) to a rear side viewed in the longitudinal direction (1), through which the guide wire (14) can be pushed in the longitudinal direction (1), and a supply line (41) leading into the through-opening (25) for introducing a grease that can be applied to the contact wire (14), characterized by the fact that the through opening (25) viewed in the longitudinal direction (1) after the supply line (41) on an upper side viewed in the vertical direction (9) oriented against the vertical direction (9) nose (49) which is designed to press the contact wire (14) against a bottom side (54) of the passage opening (25) as seen in the vertical direction (9).

2. Grease device (20) according to claim 1, wherein the through-opening (25) is arranged in a groove (24) formed in a guide body part (22) of the base body (21) and covered by a cover part (23) of the base body (21).

3. Grease device (20) according to claim 2, wherein the supply line (41) is guided through the cover part (23).

4. Greasing device (20) according to claim 2 or 3, wherein the cover part (23) is force-fit (30, 31, 32) connected to the guide body part (22).

5. Greasing device (20) according to one of the preceding claims, wherein the through-opening (25) has a funnel-shaped area (42) ' ) exhibits an opening width (43) seen in the transverse direction (11) that tapers towards the supply line (41) in the opposite direction (1).

6. Greasing device (20) according to claim 5, wherein the funnel-shaped area (42) is formed as an insert that can be inserted into the through-opening (25).

7. Greasing device (20) according to claim 5 or 6, wherein, viewed in the longitudinal direction, in front of the funnel-shaped area (42) ' ) a guide sleeve (44) is arranged which positions the contact wire (14) at least in the transverse direction (11).

8. Grease device (20) according to claim 7, wherein the guide sleeve (44) is composed of two guide sleeve halves (45, 46) that can be joined in the transverse direction (11).

9. Greasing device (20) according to one of the preceding claims 5 to 8, wherein the nose (49) is located in a longitudinal direction (1) towards the funnel-shaped region (42). ' ) arranged wiper sleeve (48) is arranged.

10. Grease device (20) according to claim 9, wherein the scraper sleeve (48) is composed of two scraper sleeve halves (51, 52) that can be joined in the vertical direction (9).

11. Grease device (20) according to one of the preceding claims, comprising two deflection rollers (36) arranged in the longitudinal direction (1) in front of the front of the base body (21), each of which is rotatable about a pivot axis (37) oriented in the vertical direction (9) and spaced apart (38) from each other in the transverse direction (11) at the same height in the vertical direction (9) in order to deflect the contact wire (14) into the through opening (25).

12. Greasing device (20) according to one of the preceding claims, wherein the through-opening (25) on the bottom side (54) is adapted to a shape of the contact wire (14) on a contact wire underside that can be directed towards the pantograph.

13. Grease device (20) according to one of the preceding claims, comprising a connecting coupling (35) held in the longitudinal direction (1) on the front of the base body (21) for attaching a pulling device which is configured to pull the base body (21) in the longitudinal direction (1).

14. Grease device (20) according to claim 13, wherein the connecting coupling (35) comprises two retaining elements (34) which are held axially symmetrically (33) on the base body (21) with respect to the longitudinal direction (1).

15. Method for greasing a contact wire (14) for the electrical power supply of a pantograph of a railway vehicle, comprising: Inserting the contact wire (14) into a through-opening (25) of a base body (21) extending in a longitudinal direction (1), a transverse direction (11) perpendicular to the longitudinal direction (1) and a vertical direction (9) perpendicular to the longitudinal direction (1) and perpendicular to the transverse direction (11), wherein the through-opening (25) penetrates the base body (21) viewed in the longitudinal direction (1) from a front to a rear view viewed in the longitudinal direction (1), Introducing grease into the through-opening (25) via a supply line (41) running at an angle to the through-opening (25), and Pulling the base body (21) in the longitudinal direction (1), characterized by Wiping off grease applied to the contact wire (14) drawn through the base body (21) on the upper side of the contact wire as seen in the vertical direction (9).

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