Abstract
The invention relates to a device for fastening a sliding element to a current collector or to a rocker mounted there, to draw electrical energy from an overhead contact line to an electrically driven vehicle. The device comprises a sliding element, a carrier, and a carbon contact piece arranged on the carrier, and a fastening point for fastening the sliding element to the current collector is formed between the sliding element and the current collector. At each fastening point between the sliding element and the current collector, a detent means is arranged on the side of the sliding element and, for each detent means, a receptacle for said detent means is arranged on the side of the current collector, wherein each detent means and the receptacle associated therewith are releasably brought into engagement with each other by inserting and locking the detent means in the receptacle.
Claims
1.-11. (canceled)
12. A device for fastening a sliding element to a current collector in order to draw electrical energy from an overhead contact line to an electrically driven vehicle, wherein the overhead contact line is arranged in a stationary manner and the current collector is connected to the vehicle, and the sliding element comprises a carrier and at least one carbon contact piece arranged on the carrier, and at least one fastening point for fastening the sliding element to the current collector is formed between the sliding element and the current collector, characterised in that at each fastening point between the sliding element and the current collector, at least one detent means is arranged on the side of the sliding element and, for each of the detent means, a receptacle for said detent means which is associated therewith is arranged on the side of the current collector, wherein each detent means and the receptacle associated therewith in each case are releasably brought into engagement with each other by inserting and locking the detent means in the receptacle associated therewith.
13. The device according to claim 12, characterised in that the carrier has a compressed air duct for a compressed air indication or respectively a damage or wear indication of the at least one carbon contact piece.
14. The device according to claim 13, characterised in that the detent means and the receptacle associated therewith each have corresponding through holes which form a continuous through hole for a compressed air transfer from the current collector into the compressed air duct in the carrier if the detent means and the receptacle associated therewith are releasably brought into engagement with each other.
15. The device according to claim 12, characterised in that the detent means has outwardly directed projections which, on insertion of the detent means into the receptacle associated with the detent means, lock behind corresponding projections in the receptacle and/or in corresponding cavities in the receptacle.
16. The device according to claim 15, characterised in that the outwardly directed projections and/or the corresponding projections and/or the corresponding cavities in the receptacle are interrupted in sections.
17. The device according to claim 12, characterised in that the projections are formed as movably supported elements and are connected to a biasing mechanism so that, on insertion of the detent means into the associated receptacle, the movably supported elements are pressed into the interior of the detent means and, after passing through the projections and/or reaching the cavities, are pressed out of the interior of the detent means by the biasing mechanism.
18. The device according to claim 17, characterised in that the biasing mechanism has an operating element for manual actuation in order to move the movably supported elements into the interior of the detent means.
19. The device according to claim 12, characterised in that the detent means can be released from the receptacle associated therewith by pulling with a minimum force, pulling with a simultaneous rotational movement and/or by pulling with a simultaneous actuation of the operating element.
20. The device according to claim 12, characterised in that the current collector has an apparatus for receiving and aligning the carrier, in which a recess is formed at each fastening point between the current collector and the sliding element, through which recess the detent means can be inserted through the apparatus into the receptacle associated therewith.
21. A current collector, comprising a device according to claim 12.
22. An electrically driven vehicle, in particular an electrically driven rail vehicle, comprising a current collector according to claim 21.
Description
[0023] The invention is explained in greater detail below with reference to drawings, wherein:
[0024] FIG. 1 shows a side view, a sectional view and a perspective view of a sliding element having a device according to the invention for fastening to a current collector in a first embodiment,
[0025] FIG. 2 shows two sectional views of the device according to the invention for fastening to a current collector in a first embodiment,
[0026] FIG. 3 shows a side view, a sectional view and a perspective view of a sliding element having the device according to the invention for fastening to a current collector in a second embodiment,
[0027] FIG. 4 shows two sectional views of the device according to the invention for fastening to a current collector in a second embodiment,
[0028] FIG. 5 shows sectional views of the formation of projections and cavities in the detent means and receptacle, and
[0029] FIG. 6 shows schematic sectional views of the arrangement of movably supported elements and of the biasing mechanism.
[0030] FIG. 1a shows a side view of a current collector 20 having a sliding element 10 and the device according to the invention for fastening the sliding element to an apparatus for receiving and aligning a carrier (rocker) to the current collector. The sliding element 10 has a carrier 11 and a carbon contact piece 12, wherein the carbon contact piece is fastened with an electrically conducting adhesive to the carrier 11. The sliding element 10 is fastened at two fastening points 30 to the current collector 20. A compressed air feed pipe 45 is guided to the fastening points 30 via the current collector. In FIG. 1a, a section A-A is identified, which is depicted in FIG. 1b. A perspective view of the current collector 20 having two sliding elements 10 from FIGS. 1a and 1b is depicted in FIG. 1c. Each sliding element 10 is connected at two fastening points 30, in each case, to the current collector 20.
[0031] Electrical connections 22 for contacting the sliding element 10 are further depicted in FIG. 1.
[0032] It is assumed below that the sliding element 10 is fastened to a receptacle of the rocker, even if a fastening to the current collector is referred to.
[0033] FIG. 2 shows two sectional views of the device according to the invention for fastening a sliding element 10 to a current collector 20 from FIG. 1 in the region of a fastening point 30. In the carrier 11, a compressed air duct 13 for compressed air monitoring or respectively compressed air detection of the carbon contact piece 12 is formed. At the fastening point 30 a detent means 31 is formed on the sliding element 10, which detent means has a through hole for compressed air 33 in the interior. The detent means 31 is inserted and locked in a receptacle 32. The receptacle 32 has a through hole for compressed air 34. The fact that the detent means 31 and receptacle 32 engage in one another means that the through holes 33 and 34 form a continuous compressed air through hole through the fastening point 30. The compressed air is guided through a compressed air feed pipe 45 into the through hole 34 of the receptacle 32, through the through hole 34 of the receptacle 32 into the through hole 33 of the detent means 31 and from there directly into the compressed air duct 13 of the carrier 11. Thus, no separate connection of the compressed air supply is required since the pneumatic connection is established simultaneously during the inserting and locking of the detent means 31 in the receptacle 32.
[0034] In the embodiment depicted in FIG. 2, the receptacle 32 is fixed by means of a screw connection 71 in an adapter 70 which is, in turn, fastened by a further screw connection 72 to the current collector 20. This allows a rapid installation and change of the device for fastening the sliding element 10 to the current collector 20.
[0035] FIG. 3a shows a side view, FIG. 3b shows a sectional view and FIG. 3c shows a perspective view of a sliding element 10 having the device according to the invention for fastening to a current collector 20 in a second embodiment. As in FIG. 1, the sliding element 10 is formed with a carrier 11 and a carbon contact piece 12, which is fastened with an electrically conductive adhesive to the carrier 11. The sliding element 10 is initially introduced at two fastening points 30, in each case, into an apparatus 40 for receiving and aligning the carrier 11 and is connected through this to the current collector 20. The section A-A identified in FIG. 3a is depicted in FIG. 3b.
[0036] FIG. 4 shows two sectional views of the fastening point from FIG. 3. The apparatus 40 for receiving and aligning the carrier 11 is formed as a trough-shaped carrier structure which corresponds to the form of the carrier 11. The trough-shaped structure 40 is connected by means of a screw connection 73 to the current collector 20. If the sliding element 10 having the carrier 11 is to be fastened to the current collector 20, it is placed at both fastening points 30, in each case, in the trough-shaped structure 40, and in this manner simultaneously aligned. At each fastening point 30, the detent means 31 is guided through a recess in the trough-shaped structure 40 and into the receptacle 32 where it locks. In this second embodiment as well, a compressed air feed pipe 45 is provided, which guides compressed air from the current collector 20 through the through holes 33 and 34 which are in engagement with one another into the compressed air duct 13 of the carrier 11.
[0037] In FIG. 5, the formation of outwardly directed curved projections 35 of the detent means 31 and corresponding projections 36a or respectively cavities 36b of the receptacle 32 are depicted, by way of example, in three sectional views.
[0038] FIG. 5a shows an embodiment, in which projections 36a corresponding to the projections 35 of the detent means 31 are formed in the receptacle and, following the insertion of the detent means 31 into the receptacle 32, are locked in the direction of the depicted arrow behind the projections 36b. FIG. 5b shows the situation if cavities 36b corresponding to the projections 35 of the detent means 31 are formed in the receptacle 32. FIG. 5c shows a combination form from FIGS. 5a and 5b. In all of the depicted variants, the projections can be formed along the entire circumference of the detent means 31 or respectively the interior of the receptacle 32 or can be formed with interruptions.
[0039] FIG. 6 schematically shows the formation of a projection 35 of the detent means 31 as a movably supported element 50 which is connected to a biasing mechanism 55. The rest position of the movably supported element 50 is depicted in FIG. 6a. The movably supported element 50 is pressed outwards by the biasing mechanism 55 and at least partially arranged projecting from the detent means 31 so that it forms an outwardly curved projection 35. FIG. 6b shows the movably supported element 50 pressed by an action of force, depicted by an arrow identified with F, into the interior of the detent means. This position of the movably supported element 50 is taken up when the detent means 31 is inserted into the receptacle 32. As soon as the movably supported element 50 is guided past a projection 36a of the receptacle 32 or arrives in the region of a cavity 36b in the receptacle 32, the movably supported element 50 is pressed outwards again by the biasing mechanism 55 so that the movably supported element 50 locks behind the projection 36a or in the cavity 36b. In addition, the biasing mechanism 55 can have an operating element 60 (not depicted) which can be actuated by an engineer when installing or changing the sliding element, in order to move movably supported elements 50 into the interior of the detent means 31 and, in this manner, facilitate the installation and release of the sliding element 10 from the current collector 20.
REFERENCE NUMERALS
[0040] 10 Sliding element
11 Carrier
[0041] 12 Carbon contact piece
13 Compressed air duct
20 Current collector
22 Electrical connection
30 Fastening point
31 Detent means
32 Receptacle for detent means 31
33, 34 Through hole for compressed air
35 Projection of the detent means 31
36a Corresponding projection in the receptacle 32
36b Corresponding cavity in the receptacle 32
40 Apparatus for receiving and aligning the carrier 11
45 Compressed air feed pipe
50 Movably supported element
55 Biasing mechanism
60 Operating element
70 Adapter for fastening to the current collector 20
71, 72, 73 Screw connection
