Impulse release reacting upon the advanced wear of a sliding carbon contact of current collectors forming part of sliding-contact lines.

The invention relates to an advanced on the wear of the carbon brush of part of conductor lines forming pantographs responsive pulse trigger. to monitor the part of the current collector forming consumable grinding coal, whether it is still functional.

Such the current collector associated pulse trigger is known from DE-OS 30 13 758. The assignment of the pulse initiator for pantograph proves especially with larger conductor rail systems, such as monorails with a plurality of through such contact line powered monorail vehicles, insofar as disadvantageous, as each monorail vehicle must be equipped with such a pulse timer. Starting from the outlined in advance foregoing prior art, the Erfindund the object to solve the problem of displaying the advanced wear of the carbon brush of constituent of conductor lines pantographs on a pulse trigger rational.

The object is achieved with a forming the advanced wear of the carbon brush of part of conductor lines pantographs responsive pulse triggers the invention of a transversely extending to the back of the grinding line for grinding line shaft, a laterally projecting from the pantograph stop, one arranged on the shaft bolt past projects laterally on the contact line in the direction of the current collector side to a level on which the pantograph associated stop is at worn carbon brush, and an actuator that actuates a switch for known against the action of a restoring spring rotation of the shaft is formed.

If installed on the contact line pulse trigger to the invention of pantographs over with largely worn carbon brush, the correspondingly lowered, located at the pantographs attack against on the contact line projecting forming on the part of the pulse trigger shaft seated bolt runs on, whereby the shaft a rotational movement is mediated through which the still seated on the shaft actuating member interacts with a switch and so triggers a pulse which leads informational signal either to a maintenance personnel or causes a in the overhead conveyor provided behind the pulse trigger switch is actuated, through which the monorail vehicle with worn carbon brush reaches a repair track, where it then is ready to replace the coal.

The assignment of the pulse trigger to the grinding line to get even with a plurality of along the contact line movable monorail vehicles, which are powered via in operative engagement with the contact line pantograph individually with electricity, from advantageously with a single pulse trigger. Another advantage of this arises the possibility of uncomplicated forwarding a triggered pulse about to a central monitoring location.

Advantageous embodiments of the invention be provided pulse initiator result from the dependent claims, in particular from the explained in the description of the drawings embodiment.

In the drawing the invention using an exemplary embodiment is explained in more detail. Show it:<ul><li>Figure 1 is a conductor line with their associated pulse initiator according to the invention in plan view,</li><li>Figure 2 shows the view of the conductor line, partially broken away in the direction of arrow II in Figure 1, with the conductor line associated working order pantograph,</li><li>Figure 3 is a representation of Figure 2 corresponding to a current collector with worn carbon brush.</li></ul>

In the grinding line 11/12 illustrated in Figure 1 is a 4-pole contact-free conductor line. Here, the bus bars 111,111 '... in the base of plastic channels 112,112' are arranged ... which are designed such that the busbars 111, 111 '... only for the part of the current collector 21 (figure 2 and 3) forming the grinding coal 211 accessible. In summary, the 4 wires of the conductor line 11/12 about by means not shown traverses on which the wires from each other forming, ... Brackets attacking are set at a defined distance by part of the trusses to the plastic channels 112,112 '.

According to the invention is below the contact line 11/12 a transverse to the grinding line shaft 311 supported (312.312 '), on the one hand between the plastic channels 112,112' .., the conductor line 11/12 extending therethrough bolts 313, 313 '.. . are, sitting on the other hand, operated on the on the bearing 312 protruding shaft ends 311 'a a switch cam 316 314th

The bounding on one side by a return spring 317 and the other by one hand, caused by the return spring 317 rotation stopper or by a still acting on the shaft, the opposite direction to the first spring acting spring predetermined starting position of the aforementioned shaft 311 is indicated in FIGS. 1 and 2 Here, the present on the shaft 311 bolt 313.313 extend '... forming between the part of the contact line 11/12 plastic channels 112,112' ... through and protrude stromabnehmer side (21) limited from the contact line 11/12 out. Here, the over a roller 3162 forming on the part of the shaft 311 cam 314 supporting open contact 3161 of the switch 316 is open.

As long as the carbon brushes 211 of the pantograph 21 ... are not sufficiently long, the pulse or signal trigger 31 of the traversing in the direction of arrow A pantographs 21 ... that a on the respective plastic channel 112,112 '.., projecting stop 212 provided traversed without active engagement. If the wear of the carbon brush 211 of one or more pantographs 21 ... advanced and has the pantograph 21 correspondingly lowered (arrow B) is the stop 212 at the respective pantographs 21 ... with each on the contact line 11/12 projecting, part of the trigger 31 forming, seated on the shaft 311 bolt 313.313 '... in operative engagement (figure 3), the shaft 311 is accordingly rotated in the direction of arrow C, so that then the end of the shaft 311' seated cam 314, the part of the con tact tongue 3161 forming roller 3162 from the recess 3141 of the cam plate 314 out auf.dem full periphery of the cam 314 passes, whereby the contact tongue is 3161 transferred to the closed position, whereby then a pulse or a signal is triggered.

The pulse initiator 31 is summarized in a housing 41 which is ... connected via brackets 411, 411 'with the conductor line 11/12. In the housing 41 turns the switch 316 is installed, proceed from the lines 3163, 3163 '.