Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
  • B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
  • B60L5/20—Details of contact bow
  • B60L5/205—Details of contact bow with carbon contact members
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L2200/00—Type of vehicles
  • B60L2200/26—Rail vehicles

Definitions

• the invention relates to a S ensorelement for a sensor device, in particular for carbon abrasive pieces for energy transmission from a contact wire to a vehicle, and a carbon abrasive piece with a
• Sensor element wherein the sensor element is formed from a fluid-tight tube profile, which can be arranged in a longitudinal recess of a coal grinding piece.
• Carbide sanding pieces also regularly serve as a so-called sanding strip for transferring energy from a trolley wire to a vehicle, such as a locomotive.
• a sensor device that causes a lowering of the sanding strip with the coal grit or a pantograph when a certain wear limit of the coal grit is exceeded or damage to the coal grinding piece occur.
• the sensor device comprises a sensor element which acts as a fluid-tight channel or as a tube profile in the coal Grinding piece can be formed, wherein the sensor element is acted upon with compressed air. When reaching the wear limit, there is a grinding of the channel or the pipe profile and an escape of compressed air. The pressure loss is detected by the sensor device, followed by a lowering of the pantograph.
• the present invention is therefore based on the object to propose a sensor element or a carbon abrasive piece with a sensor element, which causes an improved response of a sensor device in case of damage to the carbon abrasive piece.
• This object is achieved by a sensor element with the features of claim 1 and by a carbon grinder with the features of claim 13.
• the sensor element according to the invention for a sensor device in particular for carbon abrasive pieces for energy transmission of a
• Contact wire on a vehicle is made of a fluid-tight tube profile. det, which can be arranged in a longitudinal recess in a carbon loop, wherein at least one So llbruchstelle is formed on the tube profile.
• the So llbruchstelle on Rohrpro fil is designed so that they can respond to such stresses and an opening of a pipe profile wall at the predetermined breaking point is quickly and reliably effected, can flow out of the pipe profile at the compressed air. It is basically irrelevant from which material the tube profile consists or with which cross-sectional shape of the tube profile is formed.
• the Rohrpro fil can therefore also have a round, square or oval cross section.
• the So llbruchstelle by an at the predetermined breaking point reduced wall thickness of an otherwise uniform
• Tube profile wall to be formed may have a weakening point, which causes, for example, in a tensile load or bending of the Rohrpro fils due to the reduced wall thickness at this point a sufficiently large opening of the tube filofilwandung.
• the predetermined breaking points can be regularly spaced from each other.
• the predetermined breaking points can be formed at equal intervals on the pipe profile, wherein the distances can be selected so as to ensure that when breaking away from coal. from the carbon abrasive piece a predetermined breaking point is in the immediate vicinity of the damage.
• the So llbruchstelle is easy to prepare, if it is formed on an outer side of the pipe profile.
• the tube profile can then be partially weakened particularly easily by a material removal.
• the So llbruchstelle may be formed helically. For example, spiral or thread-like, one or more continuous, even in different gradients or in opposite directions. Also, the So llbruchstelle may be formed in the transverse direction of the Rohrpro fils. For example, then a partial weakening of the pipe profile can be effected by sections pulling the Rohrpro fils.
• So llbruchstelle may be formed as a circumferential groove.
• a circumferential groove is particularly easy to produce, for example by material removal by means of turning, milling, grinding,
• the groove may be rectangular in cross-section, triangular, trapezoidal, Y-shaped or x-shaped on the outside and / or inside of the Rohrpro fils be formed.
• the Rohrpro fil can be at least partially formed as a corrugated pipe. For example, continuously or in sections in the manner of a bellows or as a so-called folding tube.
• the So llbruchstelle may be formed in the longitudinal direction of the Rohrpro fils, such as by one or more thickness reductions in the longitudinal direction of the pipe profile.
• the So LLbruchstellen in the longitudinal direction can be combined with So llbruchstellen in the transverse direction or formed alone on Rohrpro fil.
• the Rohrpro fil can also be formed of a metal tube.
• the metal tube may be made of copper.
• the Rohrpro fil can be made particularly inexpensive and easy if the tube profile is formed with a round cross-section. Such Rohrpro file are easily available as a semi-finished, in which case only the So llbruchsstelle must be formed on Rohrpro fil.
• the carbon friction piece according to the invention in particular for transmitting energy from a contact wire to a vehicle, has a sensor element according to one of claims 1 to 9, wherein a predetermined breaking point of the sensor element is arranged within a sliding contact portion A of the carbon friction piece.
• a predetermined breaking point of the sensor element is arranged within a sliding contact portion A of the carbon friction piece.
• Fig. 1 A cross-sectional view of a grinding bar along a
• Fig. 2 a sectional side view of a Rohrpro fils
• Fig. 3 the tube profile of Figure 2 in a longitudinal sectional view.
• FIG. 4 shows a side view of a sanding strip in a schematic representation.
• Fig. 1 shows a cross-sectional view of a sanding strip 10 of FIG. 4, wherein the sanding strip 10 is formed essentially of a carbon abrasive 1 1 and a Garpro fil 12.
• the contact strip 10 is secured by means of brackets 13 and 14 to a pantograph not shown here, so that in a S chleiftitleab mustard A also not shown contact wire on a sliding contact surface 1 5 of the carbon loop 1 1 can be contacted for transmitting electrical energy.
• a longitudinal recess 17 is further formed, in which a pipe section 1 8 is inserted.
• the Rohrpro fil 1 8 is connected by means of a connecting line 19 to a sensor device, not shown here, a sensor device of a locomotive. At an opening or a breakthrough of a pipe profile wall 20 of the tubular profile 1 8 compressed air flows from the Rohrpro fil 1 8, whereby the sensor device causes a lowering of the pantograph with the contact strip 10 and thus a separation from the contact wire.
• circumferential grooves 22 are formed on the pipe profile 1 8, in particular on the outer side 21 and arranged at the same relative distances along a longitudinal extension of the Rohrpro fils 1 8.
• the grooves 22 each form So llbruchstellen, since the tube profile wall 20 in a wall portion 23 of the groove 22 against a regular wall portion 24 of
• Rohrpro filwandung 20 has a reduced wall thickness.
• a tensile or bending stress of the tubular profile 1 8 thus causes a break or an opening of the Rohrpro filwandung 20 in the region of the groove 22. This is particularly advantageous because the tube profile 1 8 in the described
• Case consists of comparatively elastic copper.
• compressed air can easily escape from this damage to the pipe section 1 8.
• the circumferential formation of the groove 22 favors a complete breakthrough of the tube profile 1 8 and thus a rapid escape of the compressed air, which, in contrast to a narrow crack, effects a rapid response of the sensor device.
• the grooves 22 are distributed or arranged along the entire sliding contact section A over the longitudinal extension of the tube profile.

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Current-Collector Devices For Electrically Propelled Vehicles (AREA)
• Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
• Push-Button Switches (AREA)

Priority Applications (7)

Applications Claiming Priority (2)

Publications (3)

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• 2009
  • 2009-12-09 DE DE200910047757 patent/DE102009047757B4/de active Active
• 2010
  • 2010-11-12 SI SI201031495T patent/SI2509817T1/sl unknown
  • 2010-11-12 PL PL10787047T patent/PL2509817T3/pl unknown
  • 2010-11-12 HU HUE10787047A patent/HUE035203T2/en unknown
  • 2010-11-12 RU RU2012126081/11A patent/RU2526732C2/ru active
  • 2010-11-12 EP EP10787047.9A patent/EP2509817B1/de active Active
  • 2010-11-12 JP JP2012542426A patent/JP5563670B2/ja active Active
  • 2010-11-12 WO PCT/EP2010/067358 patent/WO2011069776A2/de active Application Filing
  • 2010-11-12 PT PT107870479T patent/PT2509817T/pt unknown
  • 2010-11-12 CN CN2010800558906A patent/CN102725171A/zh active Pending
  • 2010-11-12 ES ES10787047.9T patent/ES2629308T3/es active Active
  • 2010-11-12 US US13/514,188 patent/US9120386B2/en active Active

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