Current collector for a vehicle

Abstract

The invention relates to a current collector for a vehicle, comprising an electric drive device (1), a support (2) which can be connected to a vehicle, and a contact piece (4) which can be laid against a current supply apparatus (5), wherein the drive device (1) is connected to the support (2), and wherein the contact piece (4) is connected to a current collector arm (6) movably coupled to the support (2). According to the invention, the drive device (1) has a force transmission element (7) which is articulatedly connected to a lever (8) articulatedly connected to the support (2), and between a first lever end and a second lever end a contact element (9) is connected to the lever (8) or a contact region of the lever (8) is formed, and the contact element (9) or the contact region contacts the current collector arm (6) or can be brought into contact with the current collector arm (6). This allows the contact piece (4) to be more quickly removed from the current supply apparatus (5).

Description

[0001] 202215540 Current collector for a vehicle The invention relates to a current collector for a vehicle, in particular for a rail vehicle, with an electric drive device, with a carrier that can be connected to a vehicle, and with a contact piece that can be applied to a power supply device, wherein the drive device is connected to the carrier, and wherein the contact piece is connected to a current collector arm that is movably coupled to the carrier. Current collectors whose contact pieces are connected to power supply devices such as busbars in order to supply vehicles with electricity must be designed so that they can be separated from the power supply devices in order to be able to disconnect the vehicle from its electricity supply.The contact pieces, which are often designed as sliding pieces or sliding shoes, must therefore be able to be applied to and removed from the power supply devices, for which the current collectors often have drive devices. Pneumatic actuators are often used as drive devices, although these often cannot be precisely controlled (e.g. with regard to adjusting the position of a piston of the pneumatic actuators or specifying a piston travel speed, etc.). Mechanical structures such as stops are often required to define the end positions of the pneumatic actuators. It should also be noted that pneumatic actuators require pneumatic equipment. If this pneumatic equipment is in a depressurized state, a setup time for building up system pressure must often be taken into account in order to pressurize the pneumatic actuators.202215540 With electric actuators, it should be noted that they often have lower operating speeds than pneumatic actuators. EP 3587 165 A1, for example, is known from the prior art, which describes a current collector for a vehicle with a current collector arm and a sliding piece connected to the current collector arm. The sliding piece can be applied to or separated from a conductor rail by means of an actuating device. The actuating device has shafts, a lever device, and a rod, whereby a torque introduced into the actuating device for actuating the current collector arm can be redirected. Furthermore, EP 4043 269 A1 shows a current collector with a support and a current collector arm with a sliding piece, wherein an actuator is connected to the support.A piston rod of the actuator is connected to a rotary force transmitter via a first lever arm, the force transmitter being connected to the support and, at one end of the first lever arm, to the first lever arm. A second lever arm is connected to the force transmitter, via which actuating forces of the actuator can be transmitted to the current collector arm, thereby allowing the current collector arm to be deflected. The invention is based on the object of providing a precisely adjustable current collector with a contact piece that is further developed compared to the prior art and can be quickly removed from a power supply device.According to the invention, this object is achieved with a current collector according to claim 1, in which the drive device has a force transmission element for transmitting actuating forces to the contact piece, wherein the force transmission element is articulated to 202215540 a lever, wherein the lever is articulated to the carrier, wherein between a first lever end of the lever and a second lever end of the lever, a contact element is connected to the lever or a contact region of the lever is formed, and wherein by means of the contact element or the contact region, the current collector arm can be deflected, wherein the contact element or the contact region contacts the current collector arm or can be brought into contact with the current collector arm. By means of the lever and the contact element or the contact region, on the one hand, a high force is exerted on the current collector arm in order to deflect it, and on the other hand, by dispensing with, for example,on rotary force transmitters, enables rapid deflections of the current collector arm. This makes it possible to quickly remove the contact piece, which can be designed as a sliding piece, for example, from a power supply device in order to avoid sparking between the contact piece and the power supply device. Thanks to the electric drive device, the position and / or orientation of the current collector arm can be adjusted precisely, continuously, and energy-efficiently; corresponding manipulation speeds of the current collector arm can also be precisely specified. For example, manipulation speed profiles can be stored in a control unit to which the drive device can be connected; these profiles can be selected depending on the movement process (e.g., placing the contact piece on the power supply device or removing the contact piece from the power supply device).For example, a depositing process of the contact piece can be carried out at a high first manipulation speed. A depositing process of the contact piece can be carried out, for example, to reduce wear on the power supply device, at a second manipulation speed and a third manipulation speed, wherein the contact piece can be deposited on the power supply device at the third manipulation speed and the third manipulation speed can be lower than the second manipulation speed at which the depositing process is initiated, etc. Pneumatic equipment can be dispensed with. The contact element or the contact area can be in mechanical contact with the current collector arm, for example via friction or rolling contact.However, it is also possible for a fixed connection to be formed between the contact element or the contact region on the one hand and the current collector arm on the other. Further advantageous embodiments of the current collector according to the invention arise from the dependent claims. A distance between the lever and the current collector arm can be bridged if the contact element or the contact region is designed to protrude from the lever in the direction of the current collector arm. A spindle drive can be realized if the force transmission element is designed as a spindle. It can also be helpful with regard to bridging the distance between the contact element or the contact region on the one hand and the current collector arm on the other hand if the contact element or the contact region is designed to extend in the direction of a lever transverse axis of the lever or predominantly in the direction of the lever transverse axis.For example, the contact element or the contact area can be aligned parallel to the lever's transverse axis. It is also conceivable for the contact element and the contact area to be aligned obliquely to the lever's transverse axis, as long as the contact element or the contact area extends predominantly in the direction of the lever's transverse axis. 202215540 It is also advantageous if the contact element is connected to the lever in a positionally adjustable manner. This measure allows deflections of the current collector arm to be adjusted or calibrated in order to adapt to a distance between the current collector and the power supply device, which distance may be variable (e.g. due to wheel wear of a vehicle to which the current collector may be connected, etc.).A low-cost solution for the contact element is achieved if the contact element is designed as a screw whose screw head contacts the current collector arm or can be brought into contact with the current collector arm in order to deflect the current collector arm. An advantageous solution is achieved if the drive device is articulated to the support. This measure avoids bending loads or transverse loads on the force transmission element. It is also helpful if the drive device is designed as a self-locking linear drive with a position measuring system. This measure eliminates the need for end stops outside the drive device to limit deflections of the current collector arm. Self-locking of the linear drive can be achieved, for example, by a gear in the drive device. The position measuring system enables, for example, position control of the current collector arm.A preferred solution is achieved if the drive device has an actuating force of at least 1500 N and a lifting speed under full load of at least 15 mm / s. 202215540 This measure, in conjunction with the lever on the one hand and the contact element or the contact area on the other, promotes the rapid deflections of the current collector arm. A favorable solution with regard to position and / or orientation adjustment and a needs-based design of movement processes of the current collector arm is obtained if the drive device is designed to adjust speeds and / or lifting speeds and to detect stroke end positions. To adjust speeds and / or lifting speeds, the drive device can, for example, be connected to a control unit. The detection of stroke end positions can, for example, be achieved by means of end position sensors of the drive device (e.g.as electrical switches, as optical sensors or as inductive sensors, etc.). It is also helpful if an angular gear is coupled to the power transmission element of the drive device for torque transmission, wherein an angular gear housing of the angular gear is connected to a drive housing of the drive device, and wherein an actuating element can be coupled to the angular gear to actuate the power transmission element via the angular gear. This measure makes it possible to actuate the drive device and thus deflect the current collector arm, for example, even in the event of a power supply to the current collector failing. The actuating element can be designed, for example, as a hand crank or as a hand lever. The angular gear can, for example, be a bevel gear, whereby, for example, an angle of 90 ° can be realized between a drive shaft and an output shaft.If the drive device is aligned vertically, for example, the 202215540 actuating element can be attached horizontally to the angular gear, etc. By connecting the angular gear housing to the drive housing (instead of, for example, to the carrier), an angular differential gear between the angular gear and the drive device can be dispensed with, thus achieving a compact arrangement of the angular gear and the drive device. A structurally simple seal can be used between the angular gear and the drive device. An advantageous solution is achieved if the angular gear housing is connected to the drive housing via an adapter, whereby the adapter is mounted on the carrier. The adapter makes it possible, for example, to compensate for tolerances between the angular gear and the drive device.Mounting the adapter on the support ensures that the drive device is not overloaded when actuated via the bevel gear (e.g., using a hand crank, etc.). In connection with the mounting of the adapter, it can be helpful if a support pin is connected to the adapter and to a support pin holder connected to the support for mounting the adapter on the support. The support pin holder can be used, for example, to compensate for manufacturing and / or assembly tolerances. A support pin axis can, for example, be aligned coaxially with a bearing axis of a bearing of the drive device, via which the drive device can be connected to the support, etc.It is advantageous if, for manual actuation of the force transmission element, a hand crank is detachably connected to the angular gear as the actuating element. The hand crank has a handle and a 202215540 crank force transmission device, which comprises at least a first crank force transmission element and a second crank force transmission element, and the first crank force transmission element is connected to the second crank force transmission element via a crank slip clutch. This measure eliminates the need for a slip clutch in the angular gear, thereby achieving mass and installation space advantages. The crank slip clutch prevents overloading of the drive device during manual actuation.The hand crank can, for example, have a key bit on its front, which can be inserted into a corresponding counterpart in the bevel gear, thus protecting the bevel gear from the use of an unsuitable tool. The crank slip clutch can, for example, have index marks on a first clutch disc and a tongue on a second clutch disc, wherein the tongue can cause a rattling noise if there is relative movement between the first clutch disc and the second clutch disc and the tongue touches the index marks. This can, for example, alert an operator to the activation of the crank slip clutch.Emergency operation of the current collector arm without the need for an angular gear and an angle compensation coupling is made possible if a belt drive is coupled to a shaft of the drive device that is coupled to the power transmission element via a gear of the drive device, wherein a belt of the belt drive is guided by means of a first belt drive wheel connected to the shaft and a second belt drive wheel connected to the carrier, and wherein, to actuate the belt drive via the second belt drive wheel, the second belt drive wheel can be coupled to an actuating element. 202215540 The belt drive can be designed, for example, as a toothed belt drive or as a V-belt drive. Overloading of the drive device during emergency operation is avoided if the actuating element can be coupled to the angular gear or to the second belt drive wheel via a drive-coupled slip clutch.A preferred solution is further achieved if at least one helical spring is connected to the support and to the current collector arm, wherein a fastening screw is guided through a spring core of the at least one helical spring, which fastening screw is connected to the support and by means of which the at least one helical spring is pretensioned, wherein a fastening screw head of the fastening screw is secured against rotation by means of a laying key, and wherein the laying key is detachably connected to the support. This measure enables emergency actuation of the current collector arm, which can be used, for example, if actuation of the current collector arm by means of the drive device fails and, for example, the power transmission element is immobile (e.g. due to gear damage). The current collector arm can be decoupled, for example, by removing the laying key and unscrewing the fastening screw from the spring core.This releases the coil spring. If the current collector is held against the force of gravity by the preloaded coil spring, and any connection between the contact element or contact area on the one hand and the current collector arm on the other hand is also released, the current collector arm deflects due to gravity as the coil spring relaxes, thereby releasing it from the power supply device, for example. 202215540 This measure makes it possible to loosen the fastening screw from the outside, eliminating the need to disassemble other components of the current collector.

[0002] 202215540 The invention is explained in more detail below using exemplary embodiments. These show, by way of example: Fig. 1: A side view of a section of an exemplary first embodiment of a current collector according to the invention with an electric drive device designed as a linear drive, wherein a lever with a contact element contacting a current collector arm is arranged between a force transmission element of the drive device and a support of the current collector, Fig. 2: An elevation of an exemplary second embodiment of a current collector according to the invention with an electric drive device, an angular gear torque-connected to the drive device, and a helical spring between a support of the current collector and a current collector arm, Fig.3: An oblique view of a section from an exemplary third embodiment of a current collector according to the invention, in which an angular gear is coupled to an electric drive device, wherein an angular gear housing is connected to a drive housing, Fig. 4: A side view of a section from an exemplary fourth embodiment of a current collector according to the invention with an angular gear for the emergency actuation of a 202215540 current collector arm, wherein a hand crank is coupled to the angular gear, Fig. 5: An oblique view of a section from an exemplary fifth embodiment of a current collector according to the invention with a belt drive coupled to an electric drive device for the emergency actuation of a current collector arm, Fig.6: A side view of a section of an exemplary sixth embodiment of a current collector according to the invention with a belt drive for emergency actuation of a current collector arm and with a slip clutch, and Fig. 7: A side view of a section of an exemplary seventh embodiment of a current collector according to the invention with a helical spring which is pretensioned against a support of the current collector via a fastening screw, wherein a fastening screw head is secured against rotation by means of a laying key.

[0003] 202215540 Fig. 1 shows a side view of a section of an exemplary first embodiment of a pantograph according to the invention of a rail vehicle with an electric drive device 1 designed as a linear drive. The pantograph is designed as a side pantograph and comprises a support 2, via which the pantograph is connected to a chassis frame 3 of the rail vehicle. The pantograph further has a contact piece 4 designed as a sliding piece, which can be applied to a power supply device 5 designed as a conductor rail. The drive device 1 is articulated to the support 2. The contact piece 4 is connected to a pantograph arm 6 of the pantograph, wherein the pantograph arm 6 is articulated to the support 2. The drive device 1 has a spindle designed as a spindle, in that shown in Fig.1, the power supply device 5 has a vertically aligned force transmission element 7, via which drive forces of the drive device 1 can be transmitted as actuating forces to the current collector arm 6 and thus to the contact piece 4 in order to apply the contact piece 4 to the power supply device 5 and to release it from the power supply device 5. The force transmission element 7 is articulated to a lever 8, wherein the lever 8 is in turn articulated to the carrier 2. Between a first lever end of the lever 8 and a second lever end of the lever 8, a contact element 9 is connected to the lever 8, by means of which the current collector arm 6 can be deflected. The contact element 9 is designed to protrude from the lever 8 in the direction of the current collector arm 6, and in the state shown in Fig. 1, contacts the current collector arm 6 and presses on the current collector arm 6, causing the latter to deflect downwards and move away from the power supply device 5.The contact element 9 is designed to extend in the direction of a lever transverse axis 10 of the lever 8. The contact element 9 is designed as a screw, the screw head of which contacts the current collector arm 6 in the state shown in Fig. 1 in order to deflect the current collector arm 6. The screw is connected to the lever 8 in a positionally adjustable manner, for which purpose a thread (not visible in Fig. 1) is designed in the lever 8 and extends in the direction of the lever transverse axis 10. The contact element 9 can, in an operating state in which the current collector arm 6 is not to be actuated by the drive device 1, be detached from the current collector arm 6 by means of the drive device 1. According to the invention, it is also conceivable, for example, that instead of the contact element 9, the lever 8 has a one-piece with the lever 8, e.g.has a contact area designed as a projection, which projects in the direction of the current collector arm 6, extending in the direction of the lever transverse axis 10. Fig. 2 shows an elevation of an exemplary second embodiment of a current collector of a rail vehicle according to the invention, comprising an electric drive device 1, an angular gear 11 torque-connected to the drive device 1, and a helical spring 12 between a support 2 of the current collector and a current collector arm 6 of the current collector. A contact piece 4 of the current collector is connected to the current collector arm 6, as shown by way of example in Fig. 1. 202215540 The support 2 is designed as a housing of the current collector. The drive device 1 is connected to a cover plate of the support 2 in an articulated manner with respect to a transverse axis of the support 2. A force transmission element 7 of the drive device 1, designed as a spindle, is shown in that shown in Fig.2 shown state is aligned vertically. The drive device 1 is designed as a self-locking industrial linear drive with a position measuring system and has an actuating force of at least 1500 N and a lifting speed under full load of at least 15 mm / s. The drive device 1 is configured to adjust rotational speeds and lifting speeds as well as to detect stroke end positions. For this purpose, the drive device 1 is connected to a control unit (not shown in Fig. 2) which is arranged in a car body of the rail vehicle. To detect stroke end positions, the drive device 1 has two end position sensors (not visible in Fig. 2) designed as electrical switches which respond when an upper end position or a lower end position of the force transmission element 7 is reached.In addition, the pantograph has a limit switch 13 which is connected to the support 2 and to the control unit and via which the end positions of deflections of the pantograph arm 6 itself are detected. The control unit is connected to a display unit in a driver's cab of the rail vehicle (not shown in Fig. 2), whereby system states of the pantograph (e.g. reaching or not reaching end positions by the pantograph arm 6, etc.) can be displayed to a train driver. The drive device 1 has a shaft and a gear, which are not visible in Fig. 2. Torques from the shaft are transmitted via the gear to the power transmission element 7, whereby the latter performs lifting movements. 202215540 The power transmission element 7 is coupled to a lever 8, to which a contact element 9 is in turn connected. The contact element 9 makes contact in the position shown in Fig.2, the current collector arm 6 is pivoted downwards and the contact piece 4 is separated from a power supply device 5, as shown by way of example in Fig. 1. The power transmission element 7, the lever 8 and the contact element 9 according to Fig. 2 are designed with regard to their construction, connection and functional properties as described in connection with Fig. 1. In order to enable emergency actuation of the drive device 1, the vertically oriented shaft of the drive device 1 is coupled to the angular gear 11 via an angular compensation coupling 14 designed as a metallic, universal lateral compensation coupling in clamping hub design. The angular gear 11 is designed as a bevel gear.A horizontally aligned angular gear shaft of the angular gear 11 can be actuated via an opening in the angular gear 11 by means of an actuating element which can be attached to the angular gear shaft and is shown by way of example in Fig. 4. According to the invention, it is also possible to dispense with the angle compensation coupling 14, as shown by way of example in Fig. 3. In an operating state of the current collector in which the contact piece 4 is applied to the power supply device 5 for current collection, i.e. is not to be manipulated by the drive device 1 to apply to the power supply device or to be deposited by the power supply device 5, the current collector arm 6 is resiliently held by the metallic helical spring 12. For this purpose, the helical spring 12 is connected to the carrier 2 and in an articulated manner to the current collector arm 6. 202215540 Fig.3 shows an oblique view of a section of an exemplary third embodiment of a pantograph of a rail vehicle according to the invention, in which an angular gear 11, shown only in outline in Fig. 3, is coupled to an electric drive device 1, wherein an angular gear housing is connected to a drive housing. As also described in connection with Fig. 2, the drive device 1 has a shaft and a gear, wherein torque is transmitted from the shaft to a power transmission element 7, shown as an example in Fig. 2 and designed as a spindle, of the drive device 1 via the gear, and wherein a pantograph arm 6, as shown as an example in Fig. 2, can be manipulated via the power transmission element 7. For torque transmission from the outside to the power transmission element 7 (e.g.for emergency operation), the angular gear 11 is coupled to the power transmission element 7 via the shaft and the gear of the drive device 1. The angular gear housing of the angular gear 11 is connected to the drive housing of the drive device 1. A rotatable connecting shaft 15 is arranged between the shaft of the drive device 1 and a bevel gear of the angular gear 11 (not visible in Fig. 3). The angular gear housing is connected to the drive housing via a two-part adapter 16, which has an adapter housing 17 and an adapter base 18. The connecting shaft 15 is inserted into the adapter housing 17 and coupled to the angular gear 11 via the adapter housing 17. The connecting shaft 15 is guided into the drive device 1 202215540 through a screw-in piece 19, which is inserted from the adapter base 18 into the drive device 1.A first seal 20 designed as a flat seal is arranged between the bevel gear housing and the adapter housing 17, a second seal 21 designed as a flat seal is arranged between the adapter housing 17 and the adapter base 18, a third seal 22 designed as an O-ring is arranged between the screw-in piece 19 and the adapter base 18, and a fourth seal 23 designed as a flat seal is arranged between the screw-in piece 19 and the drive housing. Tolerance compensation in the vertical direction is achieved via the third seal 22. According to the invention, it is also possible to design the first seal 20, the second seal 21, and / or the fourth seal 23, for example, as a sealing compound. The bevel gear 11 is mounted on the adapter housing 17, the adapter housing 17 on the adapter base 18, and the adapter base 18 on the drive device 1.Screw connections are formed between the adapter housing 17 and the adapter base 18, wherein a first bore 24 in the adapter housing 17, a second bore 25 in the adapter base 18 and further bores (not visible in Fig. 3) for these screw connections have bore clearance for tolerance compensation. The adapter base 18 is screwed to the drive housing. The adapter 16 is mounted on a support 2 of the current collector via the adapter housing 17. The support 2 is also shown as an example in Fig. 2. To mount the adapter 16 on the support 2, a support pin 26 is connected to the adapter housing 17 and to a support pin holder 27 connected to the support 2. The support pin holder 27 is screwed to the support 2 via elongated holes, wherein manufacturing and assembly tolerances can be compensated for by appropriately adjusting the position of the support pin holder 27.A support pin axis of the support pin 26 is arranged coaxially with a bearing axis of a bearing (not shown in Fig. 3) of the drive device 1, via which the drive device 1 is coupled to the carrier 2. To actuate the force transmission element 7 via the bevel gear 11, an actuating element can be coupled to the bevel gear of the bevel gear 11. The shaft of the drive device 1 is aligned vertically. Due to the bevel gear of the bevel gear 11, the actuating element can be inserted horizontally into the bevel gear 11, as shown by way of example in Fig. 4. Fig. 4 shows a side view of a section of an exemplary fourth embodiment of a pantograph according to the invention for a rail vehicle with an bevel gear 11 for emergency actuation of a pantograph arm 6, as shown by way of example in Fig. 2, wherein a hand crank 28 is coupled to the bevel gear 11.The hand crank 28 functions as an actuating element for the angular gear 11, which is described by way of example in connection with Fig. 3. The hand crank 28 is detachably connected to the angular gear 11 for the manual actuation of a power transmission element 7 of a drive device 1 of the pantograph, as shown by way of example in Fig. 2, which power transmission element 7 is coupled to the angular gear 11. A key bit 29 of the hand crank 28 is engaged in the angular gear 11 via an opening in the angular gear 11, so that rotations of the hand crank 28 cause rotations of a bevel gear of the angular gear 11, with which the key bit 29 is positively connected, which rotations are transmitted via a connecting shaft 15, shown by way of example in Fig. 3, a shaft of the drive device 1 and a gear of the drive device 1 to the power transmission element 7, whereby the latter moves.202215540 The hand crank 28 comprises a handle 30 designed as a roller handle and a crank force transmission device having a rod-shaped first crank force transmission element 31 and a rod-shaped second crank force transmission element 32. The first crank force transmission element 31 is connected to the second crank force transmission element 32 via a connecting disc 33, a friction disc 34, and a crank slip clutch 35 coupled to the friction disc 34. An insulator rod 36 is connected to the second crank force transmission element 32, to which in turn a key bit holder 37 is connected. The key bit 29 is connected to the key bit holder 37. In an area of ​​the hand crank 28 upstream of the crank slip clutch 35, a roller handle casing 38, enclosing the insulator rod 36, is connected to the insulator rod 36. The crank slip clutch 35 has a connection area to the friction disc 34 in Fig.4 invisible grid marks. The friction disc 34 in turn comprises a tongue, also not visible in Fig. 4, wherein the tongue causes a rattling noise when there is a relative movement between the friction disc 34 and the crank slip clutch 35 and the tongue touches the grid marks. This can alert an operator to the activation of the crank slip clutch 35. Fig. 5 discloses an oblique view of a section of an exemplary fifth embodiment of a pantograph according to the invention of a rail vehicle with a belt drive 39 coupled to an electric drive device 1 for the emergency actuation of a pantograph arm 6, as shown by way of example in Fig. 2. 202215540 The belt drive 39 is designed as a toothed belt drive. The drive device 1 is designed as described in connection with Fig. 2. The belt drive 39 is connected to the drive device 1 via an emergency actuation shaft 40 and a drive element 42 shown in Fig.5, a gear mechanism of the drive device 1 (not visible) is coupled to a power transmission element 7 of the drive device 1 designed as a spindle. The power transmission element 7 can in turn be coupled to the current collector arm 6 for manipulating the current collector arm 6. A crossed belt 41 of the belt drive 39 is guided by means of a first belt drive wheel 42 connected to the emergency actuation shaft 40 and a second belt drive wheel 43 connected to a carrier 2 of the current collector, shown by way of example in Fig. 2. To actuate the belt drive 39 via the second belt drive wheel 43, the second belt drive wheel 43 can be coupled to an actuating element, as shown by way of example in Fig. 4. The actuating element can be inserted into the second belt drive wheel 43 via an opening and connected to it in a form-fitting manner in order to rotate the second belt drive wheel 43 and thus drive the belt 41.The emergency actuation shaft 40 and the first belt drive wheel 42 are mounted on a fastening bracket 44, which in turn is clamped to a fastening stub 45, via which the drive device 1 is mounted on the carrier 2. Fig. 6 shows a side view of a section of an exemplary sixth embodiment of a current collector according to the invention of a rail vehicle with a belt drive 39 for the emergency actuation of a current collector arm 6, as shown by way of example in Fig. 2, and with a slip clutch 46. 202215540 A belt drive shaft 47 with a first belt drive wheel 42 and a second belt drive wheel 43 of the belt drive 39 is mounted in a carrier 2 of the current collector, which is designed as a housing. An emergency actuation shaft 40 of a drive device 1 of the current collector, shown as an example in Fig. 5, which can be coupled to the current collector arm 6 for manipulating the current collector arm 6, can be actuated via the belt drive 39.A third belt drive wheel and a fourth belt drive wheel, not shown in Fig. 6, are connected to the emergency actuation shaft 40. Toothed belts, not shown in Fig. 6, are guided between the first belt drive wheel 42 and the third belt drive wheel, as well as between the second belt drive wheel 43 and the fourth belt drive wheel. A connecting disc 33, which in turn is connected to a friction disc 34, is connected to the belt drive shaft 47. The slip clutch 46, to which the friction disc 34 is coupled, is also connected to the belt drive shaft 47. The slip clutch 46 is drive-coupled via the belt drive 39, which is coupled to the drive device 1. An actuating element (e.g., a hand crank 28 according to Fig.4 or a hand lever) can be positively coupled to the connecting disk 33 and thus via the slip clutch 46 to the first belt drive wheel 42 and the second belt drive wheel 43 for emergency actuation of the current collector arm 6. Fig. 7 shows a side view of a section of an exemplary seventh embodiment of a current collector of a rail vehicle according to the invention. The current collector has a support 2, a current collector arm 6 with a contact piece 4, as shown by way of example in Fig. 2, a drive device 1, also shown by way of example in Fig. 2, which can be coupled to the current collector arm 6 and actuated in an emergency, and a helical spring 12. The helical spring 12 is connected to the support 2 and in an articulated manner to the current collector arm 6. A fastening screw 49 is guided through a spring core 48 of the coil spring 12, which is connected to the carrier 2 and by means of which the coil spring 12 is pretensioned.The spring core 48 is prevented from rotating relative to the coil spring 12 due to a spring clamp of the coil spring 12. A fastening screw head 50 of the fastening screw 49 is secured against rotating by means of a key 51. The key 51 is screwed to the carrier 2, i.e., detachably connected to the carrier 2. A spherical axial bearing 52, on which the fastening screw head 50 rests, is arranged in a recess in the carrier 2.

[0004] 202215540 List of designations 1 Drive device 2 Carrier 3 Chassis frame 4 Contact piece 5 Power supply device 6 Current collector arm 7 Power transmission element 8 Lever 9 Contact element 10 Lever transverse axis 11 Angular gear 12 Coil spring 13 Limit switch 14 Angle compensation coupling 15 Connecting shaft 16 Adapter 17 Adapter housing 18 Adapter base 19 Screw-in piece 20 First seal 21 Second seal 22 Third seal 23 Fourth seal 24 First bore 25 Second bore 26 Support pin 27 Support pin holder 28 Hand crank 29 Key bit 30 Handle 31 First crank force transmission element 32 Second crank force transmission element 33 Connecting disc 34 Friction disc 35 Crank slip clutch 202215540 36 Insulator rod 37 Key bit holder 38 Roller handle casing 39 Belt drive 40 Emergency actuation shaft 41 Belt 42 First belt drive wheel 43 Second belt drive wheel 44 Mounting bracket 45 Mounting stub 46 Slip clutch 47 Belt drive shaft 48 Spring core 49Fixing screw 50 Fixing screw head 51 Key 52 Axial bearing

Claims

202215540 Patent claims 1. A current collector for a vehicle, in particular for a rail vehicle, comprising an electric drive device (1), a carrier (2) connectable to a vehicle, and a contact piece (4) connectable to a power supply device (5), wherein the drive device (1) is connected to the carrier (2), and wherein the contact piece (4) is connected to a current collector arm (6) which is movably coupled to the carrier (2), characterized in that the drive device (1) has a force transmission element (7) for transmitting actuating forces to the contact piece (4), wherein the force transmission element (7) is articulated to a lever (8), wherein the lever (8) is articulated to the carrier (2), wherein a contact element (9) is connected to the lever (8) or a contact region of the lever (8) is formed between a first lever end of the lever (8) and a second lever end of the lever (8),and wherein the current collector arm (6) can be deflected by means of the contact element (9) or the contact region, wherein the contact element (9) or the contact region contacts the current collector arm (6) or can be brought into contact with the current collector arm (6).

2. Current collector according to claim 1, characterized in that the contact element (9) or the contact region is designed to protrude from the lever (8) in the direction of the current collector arm (6).

3. Current collector according to claim 1 or 2, characterized in that the force transmission element (7) is designed as a spindle.

4. Current collector according to one of claims 1 to 3, characterized in that the contact element (9) or the contact region extends in the direction of a lever transverse axis (10) of the, 202215540 lever (8) or is designed to extend predominantly in the direction of the lever transverse axis (10).

5. Current collector according to one of claims 1 to 4, characterized in that the contact element (9) is connected to the lever (8) in a positionally adjustable manner.

6. Current collector according to one of claims 1 to 5, characterized in that the contact element (9) is designed as a screw, the screw head of which contacts the current collector arm (6) or can be brought into contact with the current collector arm (6) in order to deflect the current collector arm (6).

7. Current collector according to one of claims 1 to 6, characterized in that the drive device (1) is connected to the support (2) in an articulated manner.

8. Current collector according to one of claims 1 to 7, characterized in that the current collector arm (6) is connected to the support (2) in an articulated manner.

9. Current collector according to one of claims 1 to 8, characterized in that the force transmission element (7) is vertically oriented. 10.Current collector according to one of claims 1 to 9, characterized in that the drive device (1) is designed as a self-locking linear drive with a position measuring system.

11. Current collector according to one of claims 1 to 10, characterized in that the drive device (1) has an actuating force of at least 1500 N and a lifting speed under full load of at least 15 mm / s. 202215540 12. Current collector according to one of claims 1 to 11, characterized in that the drive device (1) is configured for adjusting rotational speeds and / or lifting speeds and for detecting lifting end positions.

13. Current collector according to one of claims 1 to 12, characterized in that, for torque transmission, an angular gear (11) is coupled to the power transmission element (7) of the drive device (1), wherein an angular gear housing of the angular gear (11) is connected to a drive housing of the drive device (1), and wherein, for actuating the power transmission element (7), an actuating element can be coupled to the angular gear (11) via the angular gear (11).

14. Current collector according to claim 13, characterized in that the angular gear housing is connected to the drive housing via an adapter (16), wherein the adapter (16) is mounted on the support (2). 15.Current collector according to claim 14, characterized in that, for mounting the adapter (16) on the support (2), a support pin (26) is connected to the adapter (16) and to a support pin holder (27) connected to the support (2).

16. Current collector according to one of claims 13 to 15, characterized in that, for manually actuating the force transmission element (7), a hand crank (28) is detachably connected to the angular gear (11) as an actuating element, wherein the hand crank (28) has a handle (30) and a crank force transmission device comprising at least a first crank force transmission element (31) and a second crank force transmission element (32), and wherein the first crank force transmission element (31) is connected to the second crank force transmission element (32) via a crank slip clutch (35). 202215540 17. Current collector according to one of claims 1 to 12, characterized in that a belt drive (39) is coupled to a shaft of the drive device (1) coupled to the power transmission element (7) via a gear of the drive device (1), wherein a belt (41) of the belt drive (39) is guided by means of a first belt drive wheel (42) connected to the shaft and a second belt drive wheel (43) connected to the carrier (2), and wherein, for actuating the belt drive (39), the second belt drive wheel (43) can be coupled to an actuating element via the second belt drive wheel (43).

18. Current collector according to one of claims 13 to 15 or according to claim 17, characterized in that the actuating element can be coupled to the angular gear (11) or to the second belt drive wheel (43) via a drive-coupled slip clutch (46). 19.Current collector according to one of claims 1 to 18, characterized in that at least one helical spring (12) is connected to the support (2) and to the current collector arm (6), wherein a fastening screw (49) is guided through a spring core (48) of the at least one helical spring (12), which fastening screw is connected to the support (2) and by means of which the at least one helical spring (12) is pretensioned, wherein a fastening screw head (50) of the fastening screw (49) is secured against rotation by means of a laying key (51), and wherein the laying key (51) is detachably connected to the support (2).

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