BRPI0621393B1 - RAILWAY LUBRICATION DEVICE - Google Patents

Abstract

A lubricating device for railway rails comprises a support structure (2) which can be positioned close to a railway rail (6), on which a mobile head (3) supporting at least one grease dispensing nozzle (4) is mounted. Movement means (5) allow the head (3) to be moved along a path which has at least one linear section which, in practice, is substantially parallel with the railway rail (6) . Moreover, the nozzle (4) is mounted on the mobile head (3) in such a way that, in practice, it can be close to the railway rail (6) at least when the head (3) is moved along the linear section of the movement path. There may also be nozzle (4) shifting means (8) operating on the nozzle (4) to shift it relative to the head (3), between an operating position and a non-operating position.

Description

(54) Title: LUBRICATION DEVICE FOR RAILROAD RAILS (51) Int.CI .: B61K 3/00 (73) Holder (s): MAZZI TECNOLOGY S.R.L.

(72) Inventor (s): GRAZIADIO MAZZI

Descriptive Report of the Invention Patent for “LUBRICATION DEVICE FOR RAILROAD RAILWAYS”.

Technical Field

The present invention relates to a lubrication device for railroad tracks.

It is a device designed to be used on curves and needles in both the rail network and the underground rail network (subway) in order to reduce wear on the train tracks and wheels caused by the friction created between them when the train passes. train. In addition, the device allows the reduction of noise and resistance to movement of the train.

State of the art

Nowadays, there are several types of lubrication devices, all capable of lubricating the side wall of the rail head.

As an example of this, we have the devices described in the Swedish patent application number 7710965-0, in the patent IT 1 123 475, in the patent OS 3 059 724, in the patent OS 4 856 617 and in the patent EP 787 638.

In all of these patents, the lubricating oil or grease is sprayed onto the rail.

However, this known technology has several disadvantages.

First, the amount of lubricant to be applied to the rail is always relatively small, since it is distributed by spraying it only in certain regions.

Second, both the oil and the grease (the latter, as it must be fluid enough to be sprayed) are too fluid, which results in excessive dispersion (both tend to run down the track).

Disclosure of the Invention

In these circumstances, the technical objective that forms the principle of the present invention is to offer a lubrication device for railroad tracks that overcomes the aforementioned disadvantages.

More specifically, the technical objective of the present invention is to offer a lubrication device for railroad tracks that allows the lubricating grease to be distributed throughout the part of the rail involved.

Another technical objective of the present invention is to offer a lubrication device for railroad tracks that allows the application of enough viscous grease on the track so that it does not run down the track.

The specified technical objective and stated goals are substantially achieved by a lubrication device for railroad tracks as described in the attached claims.

Brief Description of Drawings

Other aspects and advantages of the present invention will be better reflected in the following detailed description, with reference to the various preferred and non-restrictive embodiments of a lubrication device for railroad tracks, as illustrated in the attached drawings, in which:

Figure 1 is a schematic top view with some parts omitted from a device made in accordance with the present invention located next to a railroad track;

Figure 2 illustrates the position of the device of Figure 1 in relation to a railway track;

Figure 3 is a schematic top view of the device of Figure 1 with some parts omitted in order to illustrate others with greater clarity;

Figure 4 illustrates the device of Figure 3 with some parts added and others in section;

Figure 5 is a schematic vertical longitudinal section with some parts omitted from the device of Figure 3;

Figure 6 is a schematic vertical cross-section of the grease dispensing nozzle with some parts omitted from the device of Figure 3;

Figure 7 is a schematic top view, partially in section, of an alternative embodiment of the head of the device of Figure 3;

Figure 8 illustrates the head of Figure 7 in a different operating condition;

Figure 9 is a top horizontal view of an alternative embodiment of the head of Figure 7;

Figure 10 is a section of the head of Figure 9, according to line X-X;

Figure 11 is a vertical cross-section of another alternative embodiment of the device of Figure 9 positioned close to a rail;

ίο Figure 12 illustrates the device of Figure 11 in a different operational condition; and

Figure 13 is a schematic view of the shape and connections of a complete device with supplies, constructed in accordance with the present invention.

Detailed Description of Achievements

Invention Favorites

With reference to the accompanying drawings, the number 1 indicates a lubrication device for railway tracks as a whole according to the present invention.

In all the illustrated embodiments, device 1 comprises a support structure 2 on which a movable head 3 is mounted, supporting a grease dispensing nozzle 4, and means 5 for moving the head 3.

The support structure 2 is designed to be positioned along a section of the rail 6 to be lubricated, as shown in Figure 1, so that the head 3 can be moved by means of movement 5 along a path that has at least at least one linear section substantially parallel to the rail track 6 (although in most cases the device 1 is positioned in the curved sections of the rail 6, these can be considered practically straight when considering only a limited section).

The nozzle 4 is mounted on the movable head 3 (rigidly or so as to be movable depending on the embodiment) so that, in practice, it can be close to the rail track 6 at least when the head 3 is moved along the section linear movement path.

In all the illustrated embodiments, the movement path of the head 3 is completely straight, so that, in practice, it is parallel to the track 6. In addition, in this case, by adjusting the position of special limit switches 7, it is also possible change the size of the motion path.

However, there are other embodiments in which the movement path has, in addition to a straight operating section, other sections that extend so that the nozzle 4 is moved away from the rail 6. Said embodiment is an alternative to the embodiments described below due to the fact that the nozzle 4 is also movable in relation to the head 3 (this embodiment also allows the nozzle 4 to be moved away from the rail 6, as described below).

In the illustrated embodiments, there are also means for deflecting the nozzle 4 that operate the nozzle 4 to deflect it in relation to the head 3 between an operational position, in which it is approached from the rail, and a non-operational position, in which it is removed from the rail 6.

Advantageously, the diverter means 8 are synchronized with the movement means 5 to keep the nozzle 4 in the operational position, when the head 3 is moved along the linear section of the movement path, and to bring it to the non- when the head 3 is immobile at both ends of the movement path.

In the embodiments of Figures 1 to 8, the diverter means 8 comprise a rotating element 9 which supports the nozzle 4 and is capable of rotating between a first position, in which the nozzle 4 is in the operational position (Figures 1 to 3, 6 and 8 ), and a second position, in which the nozzle is in the non-operational position (Figures 4 and 7).

As shown in the attached drawings, when the rotating element 9 is in the first position, the nozzle 4 is preferably positioned along a direction substantially perpendicular to the movement path of the head 3, whereas when the rotating element is in the second position , the nozzle 4 is positioned parallel to the movement path.

The rotating element 9 can be moved between the operating position and the non-operating position in several ways. For example, in concomitant drawings, this is done using a sprocket-rack connection (in many of the concomitant drawings, only their dimensions are illustrated).

Therefore, there are always means 10 for rotating the rotating element 9 which, in the illustrated embodiments, comprises at least a part of the sprocket 11, integrated with the rotating element 9, and at least one rack 12, geared to the sprocket 11. Furthermore, there are actuator means 13 of the rack 12 movable with a reciprocating movement between a first final position, in which they position the rotating element 9 io in its first position, and a second final position, in which they position the rotating element 9 in its second position.

Both in the embodiment of Figures 3 and 4 and in that of Figures 7 and 8, the actuating means 13 comprise at least one hydraulic or pneumatic actuator 14 (preferably pneumatic), which has at least one fixed part 15, integrated with the head 3, and a movable part 16, integrated with the rack 12.

In the embodiment of Figures 3 and 4, in particular, the first actuator 14 consists of a first pneumatic cylinder with a jacket 17 attached to the head 3 and whose internal piston 18 can be moved between a retracted position (Figure 4), corresponding to the rack 12 positioning itself in its second position, and an extended position (Figure 3), corresponding to rack 12 positioning itself in its first position.

There is also a guide element 19 in which the end of the rack 12 opposite that integrated with the piston of the first actuator 14 is slidably inserted.

In contrast, in the embodiment of Figures 7 and 8, the first actuator 14 consists of a second pneumatic cylinder with a through hole in which the rod 20 is attached to the head 3, while the rack 12 is integrated into the side wall of the jacket 21 of the second cylinder.

In general, the first actuator 14 can be double or single acting (illustrated embodiment). In the latter case, the actuating means 13 preferably also comprise at least one first return element 22, mounted between the fixed part 15 and the movable part 16, to return the movable part 16 to the position corresponding to the positioning of the rack 12 in the second position.

In the illustrated embodiments, the first return element 22 is a spring mounted within the first actuator 14 in Figures 7 and 8 and between the rack 12 and the guide element 19 in Figures 3 and 4 (therefore, outside the first actuator 14).

In addition, the accompanying drawings also illustrate the part integrated with the head 3 of the tube 23 which supplies pressurized air to the first actuator 14. Said tube 13 is preferably rigid in Figures 3 and 4, while it is partially flexible in Figures 7 and 8, where it must follow the movement of the jacket 21 of the second cylinder.

On the other hand, in the implementation of

Figures 9 to 10 and 11 to 12, the diverter means 8 of the nozzle 4 comprise a second hydraulic or pneumatic linear actuator 24 (also preferably pneumatic) with a fixed part 25 integrated with the head 3 (consisting of the head 3 itself if necessary) and a movable part 26 operably connected to the nozzle 4, which can be moved between the first position, in which it brings the nozzle 4 to the operational position (Figure 11), and the second position, in which it brings the nozzle 4 to the non- operational (Figures 9 and 12).

In the embodiment illustrated in Figure 9, the second actuator 24 consists of a through hole 27 formed in the head 3, closed at the left end by a cap 28 and at the right end by a bushing 29, in which a rod 30 slidably inserted into the bushing 29 is mounted in a sealed manner. Between the lid 28 and the sealing disc 31 integrated with the stem 30, there is a chamber 32 similar to those of the first and second pneumatic cylinders mentioned above. The tube 23 that supplies the pressurized air (or other fluid) is connected to said chamber 32. The nozzle 4 is mounted on the head 3 in a support element 33 slidably mounted in an orifice 34 formed in the head 3 parallel to the second actuator 24. The support element

33 is connected integrally to the movable part 26 of the second actuator 24 by a connection plate 35.

In contrast, in the embodiment of Figures 11 and 12, the nozzle 4 is mounted directly on the movable part 26 of the second actuator 24. In this case, the second actuator 24 consists of a cylinder with a through hole whose pneumatic connections are not shown.

,. As in the embodiments of Figures 9 to 12, the second actuator 24 can be double or single acting. In the second case, the diverter means 8 preferably also comprise at least a second return element 36, mounted between the fixed part 25 and the movable part 26, to return the movable part 26 to the position corresponding to the position of the nozzle 4 in the non-operational position.

In both cases illustrated, the second return element 36 is mounted inside the second actuator 24, io although it can also be mounted outside the actuator.

As previously indicated, in all the illustrated embodiments, the return elements are designed in such a way that they return the nozzle 4 to the non-operating position. In practice, whereas the operational position corresponds to the position of the nozzle 4 very close to the rail 6 (the distance can be about one millimeter), the non-operational position corresponds to the position of the nozzle 4 at a distance from the rail 6 which prevents a train that is passing to reach the nozzle 4.

However, the nozzle 4 preferably consists of a flexible tubular element (surrounded by a spring 37 in the concomitant drawings). This way, even if the nozzle 4 is in the operational position when the train passes, the train will only bend the nozzle without causing any additional damage.

In order to feed the pressurized grease to the dispensing nozzle 4, there is usually at least one tube 38 with a first end 39, which can be connected to the pressurized grease supply, and a second end 40, connected to the nozzle 4. advantageously, said tube 38 is at least partially integrated with the head 3.

There are also preferably intercepting means 41 mounted along the tube 38 to selectively allow and prevent the passage of grease through the tube 38. Advantageously, the intercepting means 41 are activated so that they are synchronized with the moving means 5 of the head 3 in order to allow the supply of grease to the nozzle 4 only during the movement of the head 3 along the linear section of the movement path. In particular, in the illustrated embodiments, the intercepting means 41 are activated by the diverter means 8 of the nozzle 4.

This is usually made possible by dividing the tube 38 into a first fixed section 42, integrated with the head 3 and extending from the first end 39 to a third intermediate end 43, and a second movable section 44, integrated with the nozzle 4 and with the nozzle support 4 (rotating element

9, support element 33, movable rod of the second actuator 24 etc.) extending from the second end 40 to a fourth intermediate end 45, being positioned so that the fixed section 42 and the movable section 44 are in fluid communication with the third and fourth ends 43, 45, aligned with each other, only when the nozzle 4 is in the operational position.

In the case of the rotating element 9, this is made possible by the arrangement of the third and fourth ends 43, 45 along a geometric axis parallel to the axis of rotation of the rotating element 9 and eccentric with respect to it. Thus, if the third and fourth ends 43, 45 are aligned when the rotating element 9 is in the first position, they will no longer be aligned when it is in the second position.

In contrast, in the cases of Figures 9 to 12, the second section 44 of the tube 38 is formed respectively within the support element 33 of the nozzle 4 and the stem of the second actuator 24. In this case, the fourth end 45 is positioned radially in relation to to the support element 33 and the rod, while the third end 43 is positioned radially in the head 3, aligned with the position adopted by the fourth end 45 when the nozzle 4 is in the operational position (Figure 11).

The moving means 5 can be of any shape. In the concomitant drawings, in particular, they comprise two guides (usually one is enough) consisting of two longitudinal bars 46 on which the head 3 is mounted in a sliding manner, a motor 47 and a belt transmission 48 (illustrated only in Figures 4 and 5) mounted between the motor 47 and the head 3. The belt 48 is preferably a toothed belt mounted in a loop between the two main return rollers 49 and engaged with the mechanical axis of the motor 47 by means of two rollers secondary return lines 50 positioned on the side of the mechanical shaft.

The belt 48 is rigidly connected to the head 3 by means of two plates 51 integrated with the head 3 that fasten it between them.

Depending on the embodiments, device 1 may or may not comprise feeding and checking apparatus.

As Figure 13 illustrates, the operation of device 1 is verified by a central control and verification unit 52 which can, for example, be located on a panel mounted close to the track.

Said central unit 52 is supplied with electricity either directly by an electric line (solution not shown) or by an accumulator 53 that can be connected to a solar panel 54.

In addition to checking and controlling the motor 47 for the moving means 5, the central unit 52 checks and controls a compressor 55 for the production of pressurized air for the pneumatic actuators and a unit 56 for supplying the pressurized grease which, in turn, comprises a grease tank 57 and a pump 58 (preferably pneumatic). '

Preferably, the device 1 may comprise means for automatically returning the nozzle 4 to the non-operating position if the pneumatic or electrical supply fails to function (solution not shown). For example, the tube that supplies the pressurized air can be intercepted by a three-way valve mounted in order to selectively connect the first / second actuator 14, 24 to the compressor 55 or to the external environment and constructed so that, in the absence of commands the first / second actuator 14, 24 is always connected to the outside.

In this way, both if the electrical supply ceases to function and the pneumatic supply ceases to function, the first and second actuators 14, 24 cannot apply any force and the first and second return elements 22, 36 return the nozzle 4 from position operational.

io Finally, device 1 preferably comprises one or more sensors 59, for example, ultrasonic, to detect the passage, stop and / or direction of travel of trains in device 1.

Figure 13 also illustrates, with a different style of dashed line, the power distribution line 60, the grease distribution line 61, the air distribution line 62 and the check and control line 63 (which also includes part power supply).

As the attached drawings illustrate, the support structure 2 may comprise a lower retaining element 64 enclosed by a first housing 65 under the head 3 and with a longitudinal section 66 through which the head 3 is connected to the longitudinal guides. In addition, as shown in Figure 2, there may be a second upper casing 67 with a side cut 68 through which only the nozzle 4 can emerge when in the operational position (said side cut can be closed by a layer of rubber or something similar). genre). Although, in the accompanying drawings, enclosures 65, 67 and respective cuts 66, 68 are illustrated in only a few embodiments, it is clear that they can be present in all embodiments, illustrated or not.

Finally, it should be noted that the device 1 revealed will be equipped with special known coupling elements that allow it to be fixed close to the rail 6 and with adjustment elements that allow the precise adjustment of its position in relation to the rail 6 ( not shown). In addition, device 1 can also be combined with a normal grease collection tank that can be positioned under the side of the rail to be lubricated (also not shown).

The operation of the disclosed device 1 is directly linked to the structural description above.

In the initial condition, the head 3 is at one end of the movement path and the nozzle 4 is in the non-operational position (if it is mobile).

When the central unit 52 decides to continue lubricating the rail 6, it activates the motor 47 to move the head 3 along the movement path. If nozzle 4 is movable, the central unit 52 also issues the command for nozzle 4 to switch to the operational position and start dispensing grease to nozzle 4 as soon as head 3 starts to move along the linear section of the path . If nozzle 4 is fixed, only the grease distribution is activated.

In particular, the nozzle 4 is deflected, as previously indicated, by the distribution of pressurized air to the first or second actuators 24, overcoming the resistance of the first and second return elements 36.

As mentioned, when in the operational position, the nozzle 4 is approached to the surface of the rail 6. Advantageously, the said distance is calculated so that the grease coming out of the nozzle 4 contacts the surface of the rail 6 before be separated from the nozzle 4. Therefore, in practice, preferably, the grease should be distributed to the nozzle 4 with a flow that allows the grease to leave the nozzle 4 without being sprayed.

In this way, the grease exits the nozzle 4 continuously while the displacement of the head 3 remains connected to the rail 6, creating a line of grease in it along the linear section of the movement path.

When the distribution is completed, the central unit 52 interrupts the air supply to the first and / or second actuators 24 and, by means of a suitable valve, puts the internal pressurized chamber in contact with the external environment. In this way, the return element can return the nozzle 4 to the non-operational position (evidently, with the use of double-acting actuators, the operation becomes slightly different).

The moment at which the grease must be dispensed can be identified thanks to the sensor (s) 59. In particular, if the sensor (s) 59 detects the passage of the train (ultrasonic sensor 59), the grease can be distributed immediately after the train passes; on the other hand, if the sensor (s) 59 detects the train approaching, the grease can be distributed before the train passes.

Alternatively, the control unit can issue a command to activate device 1 after receiving the command from a remote source.

At the end of the movement path, the head 3 can remain stationary, ready for the next activation, or it can return to the initial position (the nozzle 4 being kept in the non-operational position, if necessary).

The invention has important benefits.

Firstly, thanks to the present invention, it becomes possible to distribute a uniform layer of grease over a rail section, thereby increasing the lubricating effect.

Second, it is possible to apply a relatively viscous grease that does not tend to run off the rail.

It should also be noted that the present invention is relatively easy to produce and even the costs related to its implementation are not very high.

The described invention can be modified and adapted without departing from the scope of the inventive concept.

All the details of the invention can be replaced by other technically equivalent elements and, in practice, all the materials used, as well as the shapes and dimensions of the various components, can vary according to the needs.

Claims (31)

1. - Lubrication device for railroad tracks comprising: a support structure (2) that can be positioned next to a railroad track (ó); and at least one grease dispensing nozzle (4) mounted on the support structure (2); the device being characterized by additionally comprising: a movable head (3) mounted on the support structure (2); and moving means (5) for moving the head (3) along a path that has at least one linear section which, in practice, is substantially parallel to the railway track (6); the dispensing nozzle (4) being mounted on the movable head (3) so that, in practice, it can be close to the railway track (6) at least when the head (3) is moved along the linear section of the movement. 2. Lubrication device according to claim 1, characterized in that it additionally comprises means (8) for deflecting the nozzle (4), operating on the nozzle (4) to deflect it in relation to the head (3) between a operational position and a non-operational position. 3. - Lubrication device according to claim 2, characterized by the fact that the diverter means (8) are synchronized with the movement means (5) to keep the nozzle (4) in the operational position when the head (3) ) is moved along the linear section of the motion path. 4. - Lubrication device, according to 5 claim 2 or 3, characterized in that the diverter means (8) comprise a rotating element (9) supporting the nozzle (4) and capable of rotating between a first position, in which the nozzle (4) is located in the operational position, and a second position, in which the nozzle (4) is in the non-operational position. 5. Lubrication device according to claim 4, characterized by the fact that when the rotating element (9) is in the first position, the nozzle (4) is positioned along a substantially direction 15 perpendicular to the movement path of the head (3). 6. The lubrication device according to claim 4 or 5, characterized in that it additionally comprises means (10) for rotating the rotating element (9) comprising at least a part of the gear wheel (11), 20 integrated with the rotating element (9), and at least one rack (12), geared to the sprocket (11), and actuating means (13) of the rack (12) movable with a reciprocating movement between the first final position, in the which the rotating element (9) is in the first position, and the second position 25 end, in which the rotating element (9) is in the second position. Ί. Lubrication device according to claim 6, characterized in that the actuating means (13) comprise at least one first hydraulic or pneumatic actuator (14) which has at least one fixed part 5 (15), integrated with the head (3), and a movable part (16), integrated with the rack (12). 8. Lubrication device according to claim 7, characterized in that the actuating means (13) additionally comprise at least one first return element (22) mounted between the fixed part (15) and the movable part (16) to return the moving part (16) to the position corresponding to the positioning of the rack (12) in the second position. 9. - Lubrication device, according to 15 to claim 8, characterized by the fact that the first return element (22) is mounted inside the first actuator (14). 10. - Lubrication device, according to claim 8, characterized by the fact that the first 20 return element (22) is mounted outside the first actuator (14). 11. - Lubrication device according to claim 2 or 3, characterized by the fact that the diverter means (8) comprise a second hydraulic or pneumatic linear actuator (24), having a fixed part (25) 25 integrated with the head (3) and a movable part (26) operatively connected to the nozzle (4), being movable between a first position, in which it brings the nozzle (4) to the operational position, and a second position, in which it brings the nozzle (4) to the non-operating position. 12. - Lubrication device, according to 5 to claim 11, characterized by the fact that the nozzle (4) is mounted directly on the movable part (26). 13. - Lubrication device according to claim 11, characterized by the fact that the nozzle (4) is mounted on a support element (33) slidably mounted on the head (3) and connected in an integrated manner to the movable part (26) of the second actuator (24). 14. Lubrication device according to claim 11, 12 or 13, characterized in that the diverter means (8) additionally comprise at least 15 a second return element (36) mounted between the fixed part (25) and the movable part (26) to return the movable part (26) to the position corresponding to the positioning of the nozzle (4) in the non-operational position. 15. - Lubrication device, according to 20 to claim 14, characterized by the fact that the second return element (36) is mounted inside the second actuator (24). 16. - Lubrication device, according to claim 14, characterized by the fact that the second 25 return element (36) is mounted outside the second actuator (24). 17. Lubrication device according to any one of claims 2 to 16, characterized in that it additionally comprises means for automatically returning the nozzle (4) to the non-operational position if the 5 pneumatic or electrical distribution stops working. 18. - Lubrication device according to claim 8, 9 or 10 and according to claim 17, characterized in that the means for automatically returning the nozzle (4) to the non-operating position comprises the first element return (22). 19. - Lubrication device, according to claim 14, 15 or 16 and according to claim 17, characterized by the fact that the means to automatically return the nozzle (4) to the non-operational position 15 comprise the second return element (36). 20. Lubrication device according to any one of the preceding claims, characterized in that it additionally comprises at least one tube (38) having a first end (39) that can be connected to the distribution 20 of pressurized grease and a second end (40) connected to the nozzle (4). 21. The lubrication device according to claim 20, characterized in that it additionally comprises interception means (41) mounted along the tube (38) for 25 allow and selectively prevent the passage of grease through the tube (38). 22. - Lubrication device, according to claim 21, characterized by the fact that the interception means (41) are activated in order to be synchronized with the movement means (5) of the head (3). 5 23. - Lubrication device according to claims 2 and 22, characterized by the fact that the interception means (41) are activated by the diverter means (8) of the nozzle (4). 24. - Lubrication device according to claim 23, characterized by the fact that the tube (38) has a first fixed section (42) integrated with the head (3) and a second movable section (44) integrated with the nozzle (4); the fixed section and the mobile section being in fluid communication only when the nozzle (4) is in the operational position. 15 25. Lubrication device according to any one of the preceding claims, characterized by the fact that the movement means (5) comprise at least one guide on which the head (3) is mounted in a sliding way. 26. - Lubrication device according to any one of the preceding claims, characterized by the fact that the moving means (5) comprise a motor (47) and a belt transmission (48) mounted between the motor (47) and the head (3). 27. - Lubrication device according to any one of the preceding claims, characterized in that the nozzle (4) consists of a flexible tubular element. Ί 28. Lubrication device according to any one of the preceding claims, characterized in that it additionally comprises a central checking and control unit (52) for the operation of the device (1). 5 29. The lubrication device according to claim 28, characterized in that it additionally comprises at least one sensor (59) to detect the passage, stop and / or direction of displacement of the trains in the device (1). 30. - Lubrication device, according to claim 29, characterized by the fact that the sensor (59) is an ultrasonic sensor (59). 31. Lubrication device according to any one of the preceding claims, characterized in that it additionally comprises a unit (56) for feeding the 15 grease to the nozzle (4). 32. Lubrication device according to any one of the preceding claims, characterized in that it additionally comprises an electrical distribution unit, comprising a solar panel (54) and an accumulator (53). 1/7