DE2532263A1 - POWER COLLECTION ROLE AND PROCESS FOR THEIR PRODUCTION - Google Patents

Description

Lied !, NOtIi ₁ Zeitler

¹ patent attorneys

BGGO Munich 2 2 ■ Steinsdorfsiraße 21 - ί 2 ί e: e: ο η 08G / 29 84

B 7475

SUMITOMO ELECTRIC INDUSTRIES, LTD. No. 15, 5-chome, Kitahama, Higashi-ku, Osaka / JAPAN

SUMITOMO RUBBER INDUSTRY, LTD. 1-1, Tsutsui-cho 1-chome, Fukiai-ku, Kobe-shi, Hyogo-ken / JAPAN

JAPANESE NATIONAL RAILWAYS 6-5, 1-chome, Marunouchi, Chiyoda-ku, Tokyo / JAPAN

Current collection reel and process for its manufacture

The invention relates to a power collection reel and a method for the same Manufacturing. In particular, the invention relates to one for a transport device provided power take-off reel that takes the power from a

z / G 509884/04

Pantograph line, a power supply or a power supply rail receives and can rotate in contact with the power supply rail, thereby removing power.

The pantographs that are in electrically powered transport devices come to use and have the largest area of application, are those of the pantograph contact type, which by using one or more current conductors in the form of an overhead contact line and a pantograph, i.e. a current bow or a pantograph.

This type of pantograph touches one mounted on a vehicle Pantograph bracket one or more pantographs run as so-called overhead lines. The advantage of this type of pantograph lies in the fact that a high level of accuracy is not required when installing the overhead line, as this has a certain elasticity or spring effect exhibit. On the other hand, the disadvantage of this type of pantograph is that the pantograph due to the sliding Partly in the form of the sliding plate of the current collector bracket wears out and has to be repaired or replaced. In addition to this disadvantage there are further disadvantages in that there is a limitation in terms of the current pick-up speed is determined by the speed of transverse wave propagation, which depends on the density and tension of the overhead lines stems from the fact that the overhead power lines should continue to have a costly, complicated training in order to basically the To improve pantograph function and to give the overhead power lines a uniform spring elasticity, and that ultimately also the Maintenance of power overhead lines is costly.

Another type of contact current collector element in the form of the so-called third rail is known, which has a rigid earth

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or floor conductors, such as a rigid roller pantograph (Trolley), used in this system is a rigid conductor of the rail or profile iron type, which has a high strength or Having rigidity, installed on the floor, the current being taken off by contact with this rigid conductor.

This type of pantograph does not inherently exhibit that of the transverse wave propagation speed resulting disadvantageous current consumption speed limitation, but there is a disadvantage in that that a high level of accuracy in the manufacture and installation of the power bottom lines is required, since these power bottom lines are rigid and therefore cannot adapt to changes in touch pressure. In other words, this means that the power consumption in the system of rigid current conductors / current collectors from the current collector attached to the vehicle and the possibility of follow-up or overrun depends on the spring system that holds the pantograph in place. Another known type of touch current collector element is a rolling contact type pantograph that uses rollers and a pantograph (overhead power line / pole-shaped Pantograph with a roller).

The current collector of the sliding contact type is formed such that its weight is kept as low as possible in order to improve the possibility of follow-up or follow-up; however, problems arise, for example in the form of wear and tear on the pantograph, i.e. the sliding plate of the pantograph bracket or the pantograph shoes, uneven wear of the power lines and the like. On the other hand, in the rolling contact type pantograph, almost there are no problems with regard to wear and tear, but there are disadvantages of another kind here, namely the excessively large weight of the pantograph and whose poor follow-up or follow-up opportunities arise.

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The invention is therefore based on the object of a current collection roller to create that at a high speed, i.e. at a few km / h transport device, such as a Linear motor carriage, can be used and has an extended service life. Furthermore, a method for producing such a current collection roller can be proposed.

The features of the invention created to solve this problem result from the claims.

As already mentioned, all are known and currently common Pantograph types have various problems. Accordingly, the invention is directed in particular to a current collection system of the rolling type, which has less wear and tear, in combination with a rigid conductor that requires less maintenance, thereby creating an improved To create a power collection system as a fundamentally economical overall system. However, as already explained, the aforementioned system in particular, a less than satisfactory follow-up or follow-up option on. According to an earlier proposal by the applicant (US Pat. No. 387,172), an elastically resilient current pickup roller should therefore be used arrive, which is made of a composite material exhibiting resilience, in which a metallic conductor is resilient in a spring Material, such as rubber or the like., Is embedded in order to ensure a stable contact.

However, this resilient current pickup roller also has disadvantages on. It has been shown that the modulus of elasticity actually occurring of the composite material made of metallic conductor / rubber, contrary to the expected value, the extraordinarily high value of

ο
150 - 200 kp / mm and that the permissible compressive stress

(Yield stress) has the surprisingly low value of 3-4 kp / mm.

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This indicates a lack of power output, as well as a bad one Service life and possibility of overrun. For this reason, the subject of the invention is also a pneumatic current take-off reel, which according to the invention the extraordinarily good ground contact properties and has the possibility of following or trailing a pneumatic rubber tire.

Due to appropriate creative attempts aimed at improvement the service life of the current collection roller were directed according to the aforementioned US patent, has also been shown according to the invention, that the service life of the current collection roller is improved in that the rubber wheel is made hollow and the hollow part of this rubber wheel is filled with compressed air or other compressed gases or with foamed styrene. The fiction like ate power take-off role can apply extremely well to a high speed transport device and also has an extremely improved service life. Here is the current collection roller according to the invention when in connection is used with a high speed transport device, usually with constant pressure in contact with a power supply rail held, which is why they each with equally good results even in a medium-speed transport device or a low-speed transport device can be used.

The invention is explained in more detail below with reference to the drawing. This shows in:

Fig. 1 shows a current collection roller, which in a direct current linear

motor is used;

Fig. 2 shows, partially in cross section, an embodiment of a current collection roller;

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Fig. 3 each in cross section the hollow wheel of different

^un embodiments of power collection rollers;

Fig. 5 in cross section various embodiments of the

hollow hades of a power collection reel with a power collection composite and one embedded therein electrically conductive part;

Fig. 7, 9, 11 each in cross section the hollow wheel of different

Power collection rollers having a power collection composite and an electrically conductive one embedded therein Part, similar to the embodiments according to FIGS. 5 and 6;

8, 10, 12 in each case in perspective or in side view that ^{ver at and 14} the hollow wheels according to FIGS. 7, 9, 11 and 13

turned power take-off composite part;

Fig. 15 is a perspective view of the part of a hollow wheel in which

a power take-off part and an electrically conductive part molded integrally with each other and embedded in the hollow wheel are;

16 shows, in perspective, another embodiment of the one

lumpy interconnected power take-off part and electrically conductive part;

Fig. 17, 18, each in a front view of units of current collection

/ \ elements from a power collection composite part,

(b) in side view, each of the current collection element and

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(c) each in a side view of the power collection element,

which is made of an electrically conductive metal strip, the one with a gap or slot provided lower end of the respective current collection element is compressed to a lead wire to set;

21 shows a modified embodiment in side view

the current collection element;

22, 23, in each case in plan view, the arrangement of the tips of the

^un metallic, electrically conductive elements on the

Contact surface between the hollow wheel and a power supply rail;

26a, b, c each in section that touching a power supply rail Part of the hollow wheel in which electrically conductive metallic elements are embedded;

27 shows, in cross section, part of a hollow wheel with a

Rubber layer on the surface of the power supply rail contacting wheel part, this rubber layer consisting of a composition in which the adhesion with respect to the electrically conductive metallic elements no special attention was paid;

28 shows an enlarged cross-section of the surface layer of the

the part of the hollow wheel in contact with the power supply rail according to FIG. 27;

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2 b 3 2 2 6

29, 30, 31 schematically in section the inclination of the electrically conductive Elements opposite the surface of the hollow wheel in contact with the power supply rail;

32 in side view and top view shows a representation for

Explanation of the increase in cross-sectional area resulting from wear and tear during operation the tip of each electrically conductive piece of metal, provided this is in the hollow wheel embedded and inclined with respect to the surface of the hollow wheel contacting the power supply rail;

33, 34, 35 each show the formation of open ends in perspective of the hollow wheel;

Fig. 36 in section a modified embodiment of the hoh

len wheel in which the opposite sides are formed from two disks;

37, 38, 40 depicting explanations of the individual stages of the

Method of making a power collection reel and

39 shows an embodiment of a current collection part which

is suitable for use in the current collection roller manufactured by the method according to FIGS. 37-40.

In Fig. 1, the case is shown schematically in which a current collection roller in connection with a transport device for application

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which is reached by a direct current linear motor at high speed is driven. Of course, this power take-off roller can also be used for normal electrically operated railways.

As can be seen in detail from FIG. 1, a car body is provided V, a magnetic displacement field MF for a direct current linear motor, a stationary armature winding AW, one on a rail bed G. upright rail holder BW, a pair of power supply rails R provided on the rail bed G and a pair of tires T, the Serve as a movement or displacement aid when the transport device touches or leaves the ground. A pair of current collection rollers I are suspended from the car body V by means of support shafts and take while in contact with the power supply rails R turn, by means of a power take-off part to be described below from the two power supply rails R, whereby the current by means of an electrically conductive part, not shown, and other suitable electrical connection devices is supplied to the magnetic displacement field MF. In this case, the current collection rollers I are used also as leadership roles.

In the embodiment shown in FIG. 2, it is filled with air Current collection roller I a rubber-like or rubber-shaped, elastic resilient hollow wheel 2 with an open inner peripheral part b and an electrically conductive rigid part 3 supporting the hollow wheel 2, which is airtightly fitted over the open ends 4, 4 'of the inner peripheral part b of the hollow wheel 2.

The hollow wheel 2 has an outer peripheral part a and in each case - in cross section seen - lateral peripheral parts c on. The illustrated length sections of the respective peripheral parts a, b, c are only exemplary embodiments. of course, the length section a or b can also be longer than the length section c.

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A variety of electrically conductive (electroconductive) metallic Elements 11, which are in an elastically resilient material - similar or different to the rubber-like forming the hollow wheel 2 resilient material - are arranged, is embedded in the outer peripheral part a of the hollow wheel 2, in such a way that a certain number from the plurality of electrically conductive metallic elements 11 on the circumferential surface of the hollow wheel 2 - approximately on the same Height hereby - is exposed; the plurality of electrically conductive metallic elements 11 therefore forms a current collection part 5.

In the open ends 4, 4 'of the hollow wheel 2 are rigid annular Reinforcement parts 8, 8 ', such as a wire rope or a metallic ring, embedded in order to ensure the airtight fit of the electrically conductive, the hollow wheel 2 bearing rigid part 3 above the hollow Ensure bike 2.

In the rubber-like elastically resilient material of the hollow wheel 2 an electrically conductive part 6 is embedded, which is open from one end 4 of the hollow wheel 2 via the outer peripheral part a to the other End 4 'of the hollow wheel 2 extends. This electrically conductive part 6 is electrical directly or with the interposition of another conductive material connected to the electrically conductive metallic elements 11 and also with its opposite Connection ends 7 to the electrically conductive rigid ring gear bearing part 3 connected.

It is of course possible that the electrically conductive part 6 is also only provided in the lateral peripheral part c. It is also not always necessary to insert the electrically conductive part 6 into the rubber-like one or rubber-shaped, elastically resilient material of the hollow Embed wheel 2. The electrically conductive part 6 only needs that

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Meet the requirement that the electrically conductive metallic elements 11 to electrically connect with the electrically conductive rigid ring gear bearing part 3.

In some cases, the opposite terminal ends of the electrically conductive part 6 to be bent back around the annular reinforcement parts and fixed there, so that the flexibility of the lateral Peripheral parts c of the ring gear 2 can be adjusted so that the ring gear 2 is given a desired vertical spring constant. In order to achieve a certain desired vertical spring constant or also to improve the service life, it is also possible, as required a reinforcing fabric layer 9, such as a strand of fabric synthetic fibers or a metallic cable.

In the case of the current collection roller described, the one provided in the ring gear Power take-off part made of a rubber-like, elastically resilient material manufactured with electrically conductive metallic elements embedded therein, this rubber-like, elastically resilient material being the rubber-like, correspond to elastically resilient material of the ring gear, this can be similar or different. The power take-off part can be made by molding it in one piece with the ring gear, but preferably it should be separate from the ring gear and then fitted into the hollow wheel member. In the the rubber-like, elastically resilient material to be embedded electrically conductive metallic elements can have different designs, which will be described in the following. In all cases in which the power take-off part is either integral with the ring gear or but is formed separately therefrom, however, the rubber-like elastically resilient material first becomes a certain predetermined shape formed, whereupon the electrically conductive metallic elements in the rubber-like, elastically resilient material shaped in this way

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be embedded. Preferably, the electrically conductive metallic Elements first arranged in a certain predetermined arrangement, in which a rubber-like, elastically resilient one is then used for shaping Material, such as polyurethane, is poured.

When the power take-off part is formed or shaped separately from the ring gear becomes a continuous, electrically conductive metallic material or a continuous strand-like base material on which metallic, electrically conductive elements are bonded, spirally on one Drum wound and then together with an elastically resilient material, such as polyurethane, in a cylindrical mold formed into an endless band. The power take-off part produced in this way in the form of an endless belt is then inserted into the ring gear fitted, either in the present intact state or cut crosswise into slices of a predetermined width.

It is advantageous to produce the power take-off part separately from the ring gear and then releasably fit into the ring gear in order to later remove the power take-off part, which may be subject to wear and tear and damage may be subject to being able to replace or exchange independently of the ring gear. This is in view of actual practical use advantageous. From a manufacturing point of view, too, the manufacture of the power take-off part, which is carried out separately from the ring gear, provides Advantages in that the work efficiency is increased and the individual manufacturing steps are simplified.

The embodiment of the ring gear 2, the current pick-up part 5 and the electrically conductive part 6, which can be seen in FIG. 3, arrives, for example in the current collection roller according to FIG. 2 for use. If the power take-off part 5 is arranged such that it is in the ring gear 2 is to be fitted, the part A of the ring gear 2 is advantageous

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alternately by means of compressed air blown into the hollow part of the ring gear 2 inflated to thereby bring the part A into close contact with the current collecting part 5. At the same time, due to the in the hollow part of the ring gear 2 introduced compressed air, the part C of the ring gear 2 inflated or inflated, so that the part B against the Power take-off part 5 is pressed.

To bring this advantage to bear even more, the part C, which is subjected to bending stresses, preferably made of a relatively soft rubber-like or rubber-shaped, elastically resilient one Molded material, while parts B and D made of a relatively hard rubber-like, elastically resilient material are formed. The angle α between the side wall and the bottom surface one between the part B and the groove formed in part A for receiving the power take-off part 5 should preferably be between 90-110.

The reinforcing fabric layer for the ring gear 2 preferably has a radial construction.

In the modified embodiment shown in FIG Ring gear 2, power take-off part 5 and electrically conductive part 6 of the power take-off roller are metallic wires, metallic strands, organic Fibers, such as rayon, vinyl, polyester or the like, or fabric from them, as reinforcement parts 12 in the rubber-like, elastically resilient material of the ring gear 2 used along its circumference. It is also advantageous to have a reinforcing material 13 similar to arrange the reinforcement material 12 in the power take-off part 5. This is based on the fact that when the ring gear 2 due to the in The pneumatic pressure contained therein is blown outwards, the reinforcing material 13 arranged in the power take-off composite part 5

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picks up the pressure or tension in the circumferential direction and the power take-off composite part 5 acts as an annular hoop or tire, in such a way that between the power collection composite part 5 and the ring gear 2, a large contact pressure is generated. If in the peripheral edge the power collection composite part 5, which is basically subject to a risk of breakage, a reinforcing material 14 is arranged, even better results are achieved. In any case, the mentioned reinforcement materials should be placed in a place in which they are sufficiently effective to reinforce the electrically conductive metallic elements.

The irregularly formed bottom surface 15 shown in FIG. 4 the power collection composite part 5 ensures a good fit dei Power take-off composite part 5 in the ring gear 2. In this regard, of course, different contour designs of the irregular Floor area 15 possible.

In the same way, the outer surface 16 of the power collection composite part 5 may be irregular. Furthermore, different configurations of those embedded in the current collection part 5 are also electrical conductive, metallic elements.

In the embodiment shown in FIG. 5, the current collection roller According to FIG. 2, only the ring gear 2, the power take-off part 5 and the electrically conductive part 6 are shown.

In this embodiment, the power take-off part 5 consists of electrical conductive, metallic elements 17 which are embedded in a rubber-like or rubber-shaped, elastically resilient material 5 '. Here, a large number of lengths of thick electrically conductive metal wires, such as copper, aluminum or

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Steel wires, used as electrically conductive metallic elements 17 and wound in the circumferential direction around the ring gear 2, one longitudinal side of these length sections on the circumferential surface of the ring gear - and although approximately at the same level as this circumferential surface - is exposed, while the other longitudinal side of the length sections 17 with the electrical conductive part 6 is electrically connected.

In the embodiment according to FIG. 6, the electrically conductive metallic Elements a number of thin metallic conductor pieces 18 arranged in the longitudinal direction, with their tips on the circumferential surface of the ring gear 2 - are exposed at approximately the same level as this peripheral surface, while the other ends of the conductor pieces 18 are electrically are connected to the electrically conductive part 6. In the manufacture of the current collection reel according to this embodiment, either the individual thin metallic conductor pieces 18 embedded in the previously correspondingly shaped rubber-like, elastically resilient material 5 ' will. Instead of this, the thin conductor pieces 18 can also be provided on a base material in a predetermined specific arrangement, then fixed or connected to it by any suitable means, whereupon they are then connected to the rubber-like, elastic resilient material 5 'are cast or molded together.

In the embodiment of FIG. 7 is a plurality of metal plates with saw teeth 19 or a plurality of needle-shaped Metal plates as electrically conductive metallic elements in the rubber-like, elastic resilient material 5 'embedded. The metal plate provided with saw teeth 19 mentioned here is one provided with saw teeth A piece of metal made by being made of an elongated ribbon-like metal plate with a different thickness Part 21 is punched, as can be seen from the side view of FIG. 8 (a) and from the longitudinal section in FIG. 8 (b). Depending on your needs, the thicker one can be Part 20 can also be omitted.

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The metal pieces provided with the saw teeth 19 are either in close contact next to each other or at a suitable distance from each other, then on a cylindrical mold made of metal, for example steel, wound up at suitable points, if necessary, by means of spot welding or a binding agent set and then with a rubber-like, elastically resilient material 5 ', such as polyurethane, to an annular shape formed, with the metal pieces either remaining in place or being removed. The ring part thus formed is then in the ring gear 2 fitted, either in the unchanged state, i.e. in one-piece form, or after it is crosswise in disks has been cut to the desired width.

The tips of the saw teeth 19 of the metal pieces lie on the outer surface of the outer circumferential part of the ring gear 2, to be precise at approximately the same height herewith, free, while the lower ends of the saw teeth 19 or the metal pieces are electrically connected to the electrically conductive part 6.

In the embodiment according to FIG. 9, this is electrically conductive metallic Element formed in that an electrically conductive metallic Material 22, such as steel, at the bottom of an annular, U-profile-shaped fabric web 23 made of metal fibers, preferably made of thin metal fibers, as can also be seen from FIG.

In this case it is advantageous to use a length of the continuous winding metallic conductor on a cylindrical mold and corresponding to the same, described with reference to FIG Method of molding into a ring by potting with the rubber-like, elastically resilient material 5 '. The one shaped in this way

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annular metallic conductor is then used as the power take-off part 5 in the ring gear 2 fitted.

In the embodiment according to FIG. 11, electrically conductive metallic Elements strands of metallic conductors 25, preferably strands of metallic fibers with a diameter of several to several hundred microns in stack or loop form on a base sheet 24, which, as shown in FIG. 12, from metallic, organic or inorganic fibers such as cotton, nylon or polyester. That so formed Pile or pile fabric is molded together with a rubber-like, elastically resilient material 5 ', whereupon the strand ends 26 protruding from the surface of the rubber-like, elastically resilient material 5 'can be removed. If necessary, it will be on the ground between the adjacent upright loops of the strand-shaped conductor 25 a steel reinforcement fabric 27 is arranged. The tips or upper ends of the electrically conductive metallic Elements 25 are on the outer peripheral surface of the ring gear 2, namely at about the same level as this, exposed, while the lower ends are electrically connected to the electrically conductive part 6 '.

It is advantageous to use the loop-shaped or pile-shaped elements provided sheet 24 according to FIG. 12 on a cylindrical molding tool to wrap, then in a ring shape with the rubber-like, elastic mold resilient material 5 'and finally to fit the ring-shaped electrical conductor into the ring gear 2 as a power take-off part 5.

In the embodiment of FIG. 13, a plurality of metal wire pieces 28, which are connected to an arch 29, are used as electrically conductive metallic elements. The arch 29 should preferably a flexible sheet such as rubber, where

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one or both sides of the sheet 29 with a reinforcing fabric can be disguised. This can be seen more clearly from Fig. 14, where 29-1 is a rubber layer, 29-2 is a fiber fabric, such as a cotton fabric, nylon fabric or polyester fabric, and 29-3 represents an electrically conductive sheet.

The electrically conductive metallic element shown in FIG. 14 is wound on a cylindrical mold, then according to the same method described with reference to FIG. 7 into annular Mold cast, whereupon the ring-shaped, electrically conductive element thus formed is then inserted into the ring gear 2 as a power take-off part 5 is fitted.

In the case described, the tips or upper ends are also there of the respective electrically conductive, metallic elements 28 on the outer circumferential surface of the ring gear 2, approximately at the same height therewith, exposed, while the lower ends are electrically connected to the electrically conductive part 6.

In the modified embodiment shown in FIG The power take-off reel is the power take-off part and the electrically conductive one Part formed integrally with one another. The ring gear 2 made of rubber has an upper apex part 33, a pair of facing each other, sidewalls 34, 35 extending from opposite ends of apex 33 and a pair of mounting fittings 36, 37, which adjoin the free lower ends of the side walls 34, 35. The electrically conductive rigid part 32 is accurate as in the previously described embodiments, fitted over the mounting fittings 36,37 in an airtight manner. In actual use, Air sealed under a desired pressure is filled into an inner cavity defined by the hollow rubber wheel 31 and the rigid electrically conductive Part 32 is limited.

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To ensure the airtight fit of the rigid member 32 on the fasteners To ensure 36, 37, rigid rings 42, 43 are provided on the respective attachment fittings 36, 37.

A number of current collection elements and electrically conductive elements, which each have a Stromsammeiteil 39 and an electrically conductive part 40 and 40 ', is in the rubber-like, elastically resilient Material of the ring gear 31 embedded. Each of the power take-off and the power line serving element, which the power take-off part 39 and the electrically conductive parts 40, 40 'is made of a single metal wire, which extends from the one fastening part 36 of the hollow rubber wheel 31 extends over the apex part 33 to the other fastening part 37, the two opposite ends of the element by any suitable means within the respective fastening areas with the electrically conductive rigid part 32 are electrically connected. In the illustrated embodiment are the opposite terminal ends of the metal wire on the outer surface of the ring gear 31, in the direction of the axis of rotation of the ring gear 31, exposed so that they can be connected to the rigid part 32.

The power take-off part 39 of each element concerned is inside a cross-sectional area which excludes the axis of the hollow rubber wheel 31, bent in a wave shape, wherein the crest or apex 39 ' each wave is exposed on the outer surface of the apex part 33, approximately at the same height herewith, while the wave troughs 39 ″ by means of a Metal wire or a metal sheet 41 are electrically connected to one another.

The multitude of elements used to collect and conduct electricity, each of the current collection part 39 and the electrically conductive

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Parts 40, 40 'have is at a suitable distance from each other in the hollow Rubber wheel 31 embedded along its circumference.

To set the spring constant of the hollow rubber wheel 31 to a desired one If necessary, a layer of reinforcing fabric 44 can also be embedded, which, as shown in the dashed line according to FIG 15 can be seen, from which one fastening part 36 extends to the other fastening part 37.

When the described, compressed air-filled current collection roller 30 rotated is, wherein the apex part 33 touches the power supply rail, not shown, the current is drawn through the power take-off parts of the respective elements, i.e. specifically via the corrugated crests 39 'of the respective elements exposed on the surface of the apex part 33, by means of suitable devices via the electrically conductive parts 40, 40 ', the rigid part 32 and its rotating shaft to a transport device transfer.

The special feature of the described current collection roller 30 according to 15 is that, since the roller has the hollow rubber wheel filled with compressed air as the main body, the one to be exercised thereon Load when the roller is pressed against the power supply rail is reduced and that the contact between the power take-off roller and the Feed rail is improved, with the result that the current collection roller usually rotates with constant pressure in contact with the power supply rail and that is excellent in efficiency can be achieved in terms of power consumption.

Another crucial feature is that the curvature of the Waves of the respective power take-off elements is present in the transverse direction of the roll, so that the rubber-like, resiliently elastic material of the

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Apex part 33 without adversely affecting the current collection elements can be easily deformed due to pressure applied when the roller is pressed against the power supply rail, although the Rigidity in the apex part 33 due to the presence of the current collection elements is increased; overall, this is therefore the current collection efficiency not decreased.

An additional feature of the current collection role of the one described here Embodiment is that each power take-off / power conduction element is a single metal wire, so there is no possibility that the electrical resistance due to a harmful Connection between the power take-off part and the electrically conductive one Part increases, and that furthermore, the accompanying risk of breaking of the current pick-up part and the electrically conductive part surrounding it Rubber is present, which can otherwise result from heating due to an increase in electrical resistance. These advantageous features are in contrast to the case in which the current collection element and the electrically conductive element are separate are formed.

In the further modified embodiment of the current collection roller shown in FIG. 16, the current collection element and the electrically conductive element in one piece from a length of a single metal wire. In this embodiment, an elongated unvulcanized one is along with a plurality of metal wires rubber-like, resiliently elastic sheet 45 is used, which is formed into the desired size by means of a calender roller or an extruder has been. The elongated sheet 45 can by means of a high frequency heating process, a heat rolling process or an electron beam irradiation process semi-vulcanized rubber or vulcanized rubber and cured.

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The elongated, rubber-like, resilient sheet 45 is in the transverse direction linked or quilted by means of a sewing machine, two flexible metal wires being used, which are used as upper thread 46 and Bobbin thread 47 can be used. The metal wire used as bobbin thread 47 extends along the underside of the elongated rubber-like, elastically resilient sheet 45, while the other metal wire used as the upper thread 46 at predetermined intervals on the underside of the elongated sheet 45 is interlinked with the lower thread 47, with a part of the upper thread 46 at the top of the elongated sheet 45 in predetermined Intervals is exposed and thereby a series of stitches is formed. The sewing process performed with the sewing machine is repeated according to the method described above, so that in the transverse direction of the sheet 45 on this at a certain distance from each other Rows of stitches are formed from metal wires.

The metal wire 46 used as the upper thread serves as a power take-off element for taking power from the power supply rail or as a power take-off / power line element, while the relevant as a bobbin thread used metal wire 47 serves as an electrically conductive part. There should therefore be at least one metal wire, which is used as an upper thread 46 or as a lower thread 47 is used, have a length which is much greater than the width of the elongated, rubber-like, elastically resilient bow 45, so that the opposite end connections 47 ', which extend laterally of the elongated arc 45, up to the electrically conductive, Rigid ring gear bearing part are sufficient.

Both the upper thread 46 and the lower thread 47 can be as described Have length; However, such a metal wire can also have a connection end that extends only from one side of the elongated arc 45 extends away and extends to the rigid wheel part.

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Instead, one of those used as an upper thread or bobbin thread can also be used Metal wires of the length described are given to several rows of stitches at a time. In this case, however, it is essential under the underside of the elongated, rubber-like, resilient sheet 45, an electrically conductive sheet, such as a Mesh made of metal or a metal foil, to be arranged and then two metal wires to be attached to the arch 45 by means of a sewing machine.

In the embodiment according to FIG. 16, as already mentioned, two flexible metal wires, which would take off the current part and the electrical part Form the conductive part, used as an upper thread and lower thread, which by means of a sewing machine and the elongated, rubber-like, elastic resilient sheet 45 are set so that the power take-off part and the power line part are integrally formed, in such a way that the two metal wires are held in a fixed predetermined relationship with one another at a point at which the one used as the upper thread a metal wire is connected to the other metal wire used as the bobbin thread. It is therefore one through the two metal wires excellent electrical conductivity guaranteed.

Since, furthermore, the current collection part is formed by flexible metal wires is, this power take-off part easily adapts to a deformation of the rubber or other elastically resilient material due to the pressure is subject to deformation when the current collection roller is pressed against the power supply rail.

Fig. 17 (a) shows in a modified embodiment a unit of Power collection elements that form the power collection composite part. the The unit of the current collection elements consists of a number of electrical elements conductive metal strips 48, which are arranged opposite one another, with a feed wire 49 in the lower part of the metal -

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strip 48 interspersed. Each metal strip 48 is in its lower one Part 50 is provided with a slot 51 as shown in Fig. 17 (b). Here, the length of the connecting wire 49, which is an electrical Conducting material is introduced into the slot 51 of the metal piece 48 concerned, whereupon the lower part 50 of the Metal piece 48 concerned, an external force is applied in order to compress the slot 51 and thereby the relevant electrical Set conductive metal piece 48 on connecting wire 49. This type of fastening can also be replaced by welding or the like.

The connecting wire 49 should have a length such that it is of the one fastening part of the electrically conductive rigid part over the outer peripheral part to the other fastening part of the rigid Wheel part is enough, or he must instead have a length that part from the peripheral part of the rigid wheel part to the one fastening enough.

18 shows a further modified embodiment of a unit from current collection elements. This embodiment corresponds to that of FIG. 17 insofar as the unit of current collection elements consists of electrically conductive metal pieces 52 arranged side by side. The unit of current collection elements 52 has a cylindrically bulged lower part 54 provided with a through-hole 55 and extending in such a direction that it crosses an upright leg or rod portion 56 of the element 52 concerned. The cylindrically bulged lower part 54 has has a width which, as can be seen from the side view of FIG. 18 (a), is greater than the diameter or the thickness of an upright Rod part 56. Due to the respective cylindrically bulging lower part 54, the relevant electrically conductive metal pieces are

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certainly equally spaced side by side.

A continuous lead 53 of the desired length is in the introduced into the cylindrically bulged lower parts 54 of the respective metal pieces 52 provided through holes 55, whereupon the cylindrically bulged lower parts 54 are pressed together under strong pressure from the outside, so that the through bores are pressed together and the respective current collection elements 52 are rigidly fixed to the relevant length of the connecting wire 53 serving as a power line part.

The through hole 55 can of course also be in the form of a Slit - just as in the embodiment according to FIG. 17 - be provided, in this case instead of the compression Defining the element in question on the connecting wire, for example can be carried out by welding or equivalent means.

The cylindrically bulged lower part 54 of the relevant current collection element 52 can also have a frustoconical conical shape, as can be seen from FIG. 19. In this case, too, it is frustoconical lower part 54 provided with a through hole 55 which runs in such a direction that it the upright leg or the rod part 56 of the current collection element 52 crosses. The continuous lead wire 53 is in the through holes 55 of the relevant lower parts 54 introduced, whereupon these lower parts 54 are then pressed together under strong force and accordingly the through bores 55 are squeezed together so that the respective current collection elements 52 are firmly attached to the connecting wire 53.

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- 20 -

The tapered lower part 54 of each power take-off element contributes to the fact that the electrically conductive metal pieces in question are always arranged side by side at equal distances from one another can.

A further modified embodiment of the unit from current collection elements can be seen from FIG. Each unit of current collection elements 52 represents an arrangement of a number of hairpin-shaped, electrically conductive metal pieces, which results either from a single elongated piece of metal or the unit represents a comb-shaped, electrically conductive composite metal plate of U-shaped cross-section (FIG. 20 b), which consists of a metal plate results. Each unit of the power collection elements 52 has a number of paired prongs 56, 56 'as well as circular lower ones Parts 54, seen in cross section. When the unit of the current collection elements 52 of a number of hairpin-shaped, electrical Is composed of conductive metal pieces, it is advantageous if the lower parts 54 of the respective metal pieces are connected to one another by means of elongated metal pieces 57 inserted between them, as shown in FIG Fig. 20 (a) can be seen, so that the number of hairpin-shaped metal pieces 52 is stably arranged at the same distance from each other on the outer peripheral part of the hollow rubber wheel.

The continuous lead 53 of the desired length is in the through bores 55 of the circular lower parts 54 of the respective metal pieces 52 inserted, whereupon the circular lower parts 54 are pressed together from the outside under the action of strong force, so that the unit of the current collection elements 52 is firmly connected to the connecting wire 53.

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The unit of the current collection elements 52 can also, seen in cross-section, have the shape of a hook which has only a single prong 56, as can be seen from FIG.

In the embodiments according to FIGS. 17-21, the connecting wire is or an electrically conductive part inserted into the slots or through-holes in the lower parts of the respective, the unit of Metal pieces forming current collection elements are provided; the connecting wire and the unit from the current collection elements is then rigidly connected to each other by the slots or through holes are pressed together or by a welding process or the like. is performed so that when the rubber-like current collection roller is pressed against the power supply rail and the rubber-like hollow wheel due to the load exerted thereon deformation is subjected, there is no risk that a disadvantageous or harmful compound is present, while also ensuring that there is excellent electrical conductivity between the two parts mentioned and the rest of the current collection role is safely protected from damage.

According to the invention it has been shown that the correct interpretation of the electrical Conductive metal pieces in the part of the ring gear in contact with the power supply rail, stabilized and improved power consumption results rendered.

In the case of the current collection roller described, which consists of a rubber-like, has elastically resilient material made ring gear, which in the electrically conductive rigid wheel bearing part along its circumference fitted or vulcanized or otherwise connected to it, which further comprises a number of electrically conductive metallic elements,

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which in a variety of circumferential rows in the the power supply rail contacting surface of the ring gear are arranged along its circumference, the one ends of the elements on the contact surface, approximately at the same level as this, are exposed, and wherein the plurality of circumferential cleans of the electrically conductive elements are parallel to one another is arranged in the transverse direction to the contact surface - in such an arrangement it is essential that the number of metallic Power line elements on the power supply rail contacting surface of the ring gear is exposed so that a plurality of Circumferential rows are formed along the circumference of the ring gear so that the busbar drawn in a desired part of this contact surface at least one of the number of metallic conductor elements exposed in this way touches or crosses. The above mentioned The requirement is met if the metallic conductor elements are arranged in such a way in the contact part of the ring gear with the power supply rail are that a plurality of circumferential rows is formed along the circumference of the ring gear that further the exposed surfaces of the Conductor elements have a distance from one another, the diameter of the cross-sectional area of an exposed area or the Length of this corresponds, and that furthermore the relevant metallic current conductor elements on the respective circumferential rows opposite those of the next or the next row offset by a distance which corresponds to the diameter or the length of an exposed surface, uniformly in the circumferential direction of the contact surface of the ring gear with the power supply rail.

This is discussed in greater detail below in connection with FIGS. 22-25 explained in more detail. As can be seen from Fig. 22, a variety of metallic Conductor elements 60 arranged on the contact surface of the ring gear 58 with the power supply rail 59, so that a plurality of parallel circumferential rows 60, 60, 60 60 in circumferential

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direction Y-Y of the ring gear 58 is formed. The respective metallic

2
Conductor elements of the second row 60, which is arranged in the vicinity of the first row 60, are offset from the relevant elements of the first row 60 by a distance which corresponds to the diameter r of the cross-sectional area of the circularly exposed end face of an element, this being reflected in this Way along the circumference in the direction YY of the contact surface of the ring gear continues.

The relevant metallic conductor elements of the third row 60 and the following rows are sequentially in a corresponding manner with respect to the respective elements of the previous row around the Diameter r offset, uniformly in the circumferential direction Y-Y of the contact surface of the ring gear.

Also the relevant metallic conductor elements in a single one Row are spaced from each other by a distance equal to the diameter r of the cross-sectional area of the exposed circular Corresponds to the end face of a conductor element.

The embodiment according to FIG. 23 is modified from that according to FIG. In that the exposed end face of a metallic conductor element 60 has a rectangular cross-section and that all of the metallic conductor elements 60 in the relevant circumferential rows are spaced apart from one another by a distance which is three times the length (3 χ 1) corresponds to the cross section of an exposed area, as shown in
borrowed evident.

speaks, as shown in Fig. 23, for example, for the circumferential row 60

In the embodiment shown in FIG. 24, the respective metallic conductor elements 60 of a circumferential row opposite those

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of the next but one circumferential row, in the transverse direction of the contact surface 59, offset by a distance which corresponds to the small diameter r 'of the elliptical cross section of the exposed end face corresponds to an element, namely uniformly in the circumferential direction of the contact surface. In addition, the respective metallic conductor elements are a circumferential row from each other at a distance that is four times the small diameter r '(4 χ r') the elliptical cross section of the exposed face of a current conductor element is equivalent to.

In detail, this means that the relevant metallic current conductors

1 3

terelements of the first row 60, the third row 60, the fifth

5 2

Row 60 on the one hand and the conductor elements of the second row 60,

4th
the fourth row 60, on the other hand, are successively offset from the conductor elements of the relevant next but one row by the small diameter r 'of the elliptical cross-section of the exposed face of a conductor element, namely uniformly in the circumferential direction YY of the contact surface 59 between the ring gear and the power supply rail.

The above arrangement of the relevant current conductor elements is not an exhaustive list, but in each case they are relevant metallic conductor elements offset from those of the next, next but one, etc. row by a distance equal to the diameter or corresponds to a length of the cross section of the exposed end face of an element, namely uniformly in the circumferential direction Y-Y the contact surface.

The metallic conductor elements shown in FIGS. 22-25 for the current collection roller can be made of a linear metal wire or a metal braid, as can be seen in the longitudinal section of FIG. 26 (a)

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a cross-sectionally U-shaped metal wire as shown in FIG. 26 (b) Loops of a metal wire according to FIG. 26 (c) or from embodiments with further modified cross-sections. If the U-shaped one When metal wire as shown in Fig. 26 (b) is used, a pair of tips 60 ', 60 "of a single metal wire form a pair of the circumferential rows according to FIG. 25. In the embodiment according to FIG. 26, an electrically conductive part 61 connects the metallic current conductor element electrically with the electrically conductive rigid wheel part.

When the power take-off reel is in contact with the power supply rail rotates, the metallic conductors also touch the power supply rail, so that as a result current is taken from the rail and this is transmitted to the drive part of a transport device. During operation, the metallic conductor elements wear out much faster than the rubber-like, spring-elastic material of the ring gear and may be sanded down to a level that is lower than the highest level of the rubber-like, spring-elastic material, which results in a deteriorated power consumption.

The metallic conductor elements take the current during a long service life in a satisfactory manner, if the surface of the ring gear, which touches the power supply rail, is made of a rubber composition which does not contain an agent for improving the adhesiveness with respect to metal, and if so furthermore the contact part of the radially inner wheel part, that of the surface the contact area is adjacent, is made of a rubber composition, which is a means for improving the adhesion or Contains adhesiveness with respect to metal.

As can be seen from Fig. 27, the area of the wheel in which a number metallic conductor elements 62 is embedded and the

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Touches the power supply rail, covered with a layer of rubber a, which consists of a composition which does not contain an agent for improving the adhesion. In contrast, the radially inner part of the Wheel, which is adjacent to the rubber layer a, made of a layer of rubber b, which consists of a rubber composition that a known agent for improving adhesion, such as resorcinol, a compound with an aldehyde moiety or a compound of the cobalt salt of an organic acid, the nickel salt of an organic acid or a high one Sulfur content (pH value greater than 2).

The thickness of the surface rubber layer a should preferably be smaller than half a length of the respective metallic conductor element Be 62. In this case, that is on the surface of the contact part between the ring gear and the power supply rail arranged rubber layer a made of a rubber composition that is no Contains means for improving the adhesion with respect to the metallic current conductor elements, so that if the rubber-like, elastically resilient material made ring gear - when the current pickup roller is pressed against the power supply rail - due the load applied thereto is subjected to deformation due to the pressure, the surface rubber layer a is independent of the relevant metallic conductor elements is pressed together at the contact surface, which is why the tips of the relevant Current conductor elements protrude to a certain extent from the surface of the rubber. This has the consequence that the contact pressure of the relevant metallic conductor elements with respect to the rail area increases, which is why the electrical conductivity is also improved. For this reason, the power consumption is also the pantograph role increased.

60988 4/0488

If in the embodiments described above, the current decrease If he rotates in contact with the power supply surface of the power supply rail, the fluctuation in the contact pressure becomes geometrical due to and elastic irregularities of the power supply rail and due to the vertical movement and oscillation of the transport device absorbed to a certain extent, leaving the freedom of separation between the power take-off reel and the power supply and a satisfactory power take-off performance is also ensured. Although such a pressure absorption adjusting function also exists or is to be considered if a number of metallic current conductor elements with sawtooth-like or needle-shaped projections, which form a power collection composite part, in the contact surface of the ring gear with the power supply rail in is arranged in a direction which crosses the line tangential to the circumference of the contact surface, results from the elasticity of the spring of the rubber-like ring gear, to some extent, a reduction in the pressure absorption effect, resulting in premature wear the metallic conductor elements with the sawtooth-shaped or needle-shaped projections result.

These disadvantages are eliminated from the outset by the fact that the relevant metallic conductor elements with the sawtooth-shaped or needle-shaped projections of the power take-off composite part in such a way rubber-like, resilient elastic material are embedded or arranged that each element opposite to the circumference of the rubber-like, resilient elastic material tangential line at an angle of 90> θ> 30 is inclined, this angle preferably within a size range of 80 ° > Q ^ 50 °.

509884/0488

In the embodiment according to FIG. 29, there is the current collection part shown 66 from a number of metallic electrically conductive elements 68 with needle-shaped prongs, which in this way resiliently resiliently resemble rubber Material 67 are arranged so that they are directed radially outwardly from the power take-off roller, with their tips on the circumferential surface of the rubber-like, resiliently elastic material 67, approximately at the same level as this peripheral surface, are exposed.

In this embodiment, the relevant metallic current conductor elements are 68 with the needle-shaped prongs so arranged in the rubber-like, resilient material 67 that the angle θ each Stromleitereiernentes 68 to the tangent X-X on the circumference of the own body of the ring gear 80, the respective current conductor elements 68 being inclined in one direction. An electrically conductive base plate connects in this embodiment the lower parts of the relevant metallic, needle-shaped Stromle iter elements 68 with one another.

In the embodiment according to FIG. 30, the respective metallic Stromle iter elements 68 with their needle-shaped prongs in rubber-like or rubber-shaped, resilient material 67 in one Angles of 70 or 75 to the tangent X-X on the circumference of the circular base part 65 are arranged. The respective metallic, needle-shaped current conductor elements 68, which are arranged in a plurality of circumferential rows along the circumference of the circular base part 65 are inclined in opposite directions for every row or every second or third row, etc.

In the embodiment according to FIG. 31, is a typical embodiment only a single metallic, needle-shaped current conductor element 68 is shown, which is bent in an inverted V-shape. This stream -

509884/0488

conductor elements 68 is arranged on the circular base part, wherein either both the upper and lower straight part 68 ', 68 "or only the upper straight part 68' at an angle from the top explained order of magnitude relative to the tangent to the circumference of the circular base part are inclined. In the one shown in Fig. 31 (a) Conductor element 68, the upper straight part 68 'is inclined relative to the tangent at an angle of 60, while the lower straight Part 68 '' is inclined at an angle of 45 to the tangent. In contrast, the conductor element 68 according to FIG. 31 (b) is the upper straight part 68 'inclined at an angle of 70 to the tangent, while the lower part 68' 'at an angle of 90 to the tangent the circular base is inclined.

Enlarged due to the inclination of the metallic conductor element the surface of the relevant needle-like prong of the metallic conductor element which is in contact with the power supply rail 68 when this is rubbed off, as can be seen from FIG. 32. This then has a significant increase in power consumption Episode.

In each of the described embodiments, the in contact with the power supply rail standing surface of the power take-off part a pattern, for example similar to that of the usual tire treads, can be provided.

The embodiments described so far are of course are only examples and can be modified in many ways.

The current drawn by one of the described current collection parts is via the electrically conductive part and via the electrical

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transferred conductive rigid wheel part to the motor of the transport device. The following are some examples of preferred methods of electrically connecting the electrically conductive part to the electrically conductive part rigid wheel part described.

33 shows an enlarged view of the open ends 4, 4 ' of the hollow rubber wheel 2 according to FIG.

The electrically conductive part 6 is with the plurality of metallic current conductor elements, which are embedded in the rubber-like, resilient material of the ring gear 2, electrically connected, in such a way that it extends to at least one open end 4 of the wheel 2. The connection parts 7 of the electrically conductive part 6 are on the outer surface exposed by at least the lateral peripheral part c of the ring gear 2, within the opposite open ends 4, 4 'of the ring gear 2. The connecting ends 7 of the electrically conductive part 6 can also be attached to the outer surface of the inner peripheral part b of the Ring gear 2 be exposed within the open wheel ends 4, 4 '.

If a piece of metal mesh or a piece of blind-like arch metallic strands on the outer part of the terminal 7 of the electrically conductive part 6 is attached in contact therewith, the exposure the connections 7 of the part 6 to the outer surface of the open ends 4, 4 'facilitated, with the result that the electrical conductivity between the electrically conductive part 6 and the rigid bearing part 3 are significantly improved and, in addition, the rigidity of the open ends 4, 4 ' of the ring gear 2 is increased significantly. This also ensures a sufficiently good airtight fit of the ring gear 2 in the electrically conductive rigid storage part 3 guaranteed.

509884/0488

The electrically conductive part 6 can be a single metal strand or a Be a plurality of metal strands, which are arranged in blind form along the circumference of the ring gear 2, either in a specific Distance from one another or parallel to one another adjacent to one another. Instead, the electrically conductive part 6 can also Have the form of a metal fabric, a metal fabric or a metal foil.

In the embodiments according to FIGS. 34 (a), 34 (b) and 35 is at the Outer surface of the corresponding connection of the electrically conductive part 6, a current conductor element 70 is provided to the electrically conductive Part 6 with the electrically conductive rigid bearing part 3 electrically connect to.

The current conductor element 70 is made of a metallic material and can assume the ring shape shown in FIG. 34 (a), and it can also be a curved part made up of curved individual pieces consists in which one piece is at the desired distance from the other Piece is arranged in the circumferential direction of the open end 4 as shown by the broken line in Fig. 34 (a). In any case, must however, the conductor element 70 may be embedded in the rubber-like, resiliently elastic material, one surface of which is electrically conductive part 6 contacts, while the other opposite surface of the surface of the lateral peripheral part c of the ring gear 2 faces. For this purpose, the current conductor element 70 should preferably be designed to be H-shaped in cross-section, so that its binding force in relation to on the rubber-like, resilient material, from a physical point of view, is increased.

The current conductor element 70 in the modified embodiment according to FIG Fig. 34 (b) can be attached to the inner peripheral surface of the electrically conductive

50988 4/0488

tend, rigid ring gear bearing part 3 formed in one piece with this in the form of an annular protrusion or curved protrusions arranged thereon in an annular shape. Here are wise the annular projection or the curved projections have a sufficiently large height to reach the electrically conductive part 6. In this case, the annular rib or the curved projections should preferably have a sharp apex so that they can be easily Cut into the rubber-like, resilient material of the wheel.

In the modified embodiment of the conductor element 70 according to FIG Fig. 35 is a rigid annular reinforcing member 8 and the current conductor element 70 together with the electrically conductive rigid one Part 3 molded in one piece with one another, the electrically conductive part 6 being wound onto the annular reinforcing part 8 and with it is in contact.

In all of the described embodiments of the current collection roller is in each case the power take-off part embedded in the hollow rubber-like wheel, so that a limitation on the reduction of the electrical Resistance is present and therefore the problem of power loss has not yet been completely resolved. The ones described below However, constructions reduce power loss to a minimum.

The embodiment of a current collection roller shown in FIG. 36 comprises a pair of electrically conductive metal disks 72, 72 ', which are parallel and spaced from one another opposite one another on a roller shaft 75 are attached. An endless rubber band 71 is drawn over the outer circumference of the two metal disks 72, 72 'in such a way that it is airtight is taken care of.

509884/0488

The outer diameter of the endless rubber band 71 corresponds to the diameter of the respective metal disks 72, 72 ', but then in operation, when the inner cavity 79 of the power take-off reel is filled with compressed air, the endless rubber band 71 is inflated until the outside diameter of which is greater than the diameter of the relevant metal disks 72, 72 '.

To ensure that between the metal disks 72, 72 'and the Roller shaft 75 is airtight, sealing packings 76 are arranged between said parts. The endless rubber band 71 has a power collection composite consisting of a number of electrically conductive metallic elements 73 embedded in the rubber band 71 are. One end of each electrically conductive metallic member 73 is on the outer peripheral surface of the rubber band 71, for example at the same level herewith, exposed, while the other ends of the elements 73 are electrically connected to one another by means of an electrically conductive base is material 74, for example by means of a metal wire, a metal net or a metal foil. The one another opposite ends of the electrically conductive base material extend to the opposite side surfaces of the endlc.-en Rubber band 71. There are therefore also the relevant ends of the respective electrically conductive elements 73 with the metal disks 72 or 72 'electrically connected.

If in the opposite side parts of the rubber band each rigid rings 77 are embedded, the rubber band 71 is airtight to an even greater extent on the outer circumference of the metal disks 72, 72 ' watch out.

Advantageously, is in the vicinity of the inner peripheral surface of the rubber band 71 a reinforcement layer is embedded, which consists of a number

7475

50 9 884/0488

of strands or strands 78 consists. These are parallel to each other at an angle of 90 - 45
acceptance roll arranged.

an angle of 90 - 45 with respect to the center line Y-Y of the stream

In order to use the current collection roller designed in this way Via an air passage 80 provided in the roller shaft 75, compressed air of a pressure higher than atmospheric pressure is sealed into the Filled interior 79, which is formed by the endless rubber band 71 and the metal disks 72, 72 '. This will make the endless elastic band 71 inflated to an extent that its outside diameter becomes larger than the diameter of the metal disks 72, 72 ', as through indicated by the dashed line in FIG. 36.

The current collection reel according to this embodiment therefore has a endless elastic band on, and it is in the limited by the elastic band and the metal disks inside compressed air with a higher pressure Pressure filled in sealed as atmospheric pressure, so that the power take-off area the roller, i.e. the outer circumferential surface of the endless rubber band, a good adaptability to the power supply rail in connection with the flexibility of the rubber band and the expansion and compression properties of the compressed gas. It can therefore the power take-off reel usually rotate under constant pressure in contact with the power supply rail, so that a sufficiently high Power consumption is achieved.

Furthermore, the electrically conductive part, which is the power take-off part electrically connects to the electrically conductive rigid part, from two metal disks corresponding to the side walls of the ring gear according to Formed the embodiments described above, so that the current removed by the current collection part is completely due to the electrically conductive rigid part - without any loss of power - is transmitted.

509884/0488

Therefore, even if the pressure of that contained inside the power collection reel Compressed air is accidentally and unintentionally lowered due to some circumstance and the elastic band contracts again, the metal disks come due to this by means of a vehicle exerted load is still in contact with the power supply rail, so that they continue to draw power and the transport device can move at least to the nearest station or to a maintenance station, although the travel speed is reduced is.

In the manufacture of the described embodiments of current collection rollers In most cases, it is appropriate that the part of the ring gear that touches the power supply rail and in which the current is drawn everbundteil is embedded, and the main body of the ring gear in which the electrically conductive part is embedded, first separately from each other and only then the two parts, for example by means of vulcanization and molding, to form a one-piece ring gear to unite with each other.

If in this process, however, the part of the ring gear that the power supply rail and the main body of the ring gear, which has been separately manufactured, through the vulcanizing and molding steps are connected to one another to form a unitary body, shows the rubber-like surrounding the power take-off part and the electrically conductive part, elastically resilient material the tendency in the direction of the common electrical contact surfaces between the power take-off part and the electrically conductive part, which are embedded in the two parts, respectively, to flow, resulting in deterioration of the conducts electrical conductivity between the two parts. The reduction in electrical conductivity is responsible for heating in these parts during the use of the current collection roller,

7475

50988 U / 0488

which can damage the power take-off reel.

However, the above-mentioned undesirable phenomenon is avoided by the manufacturing method described below.

This process is characterized by the fact that before vulcanizing and shaping the power collection roller, the rubber-like, elastically resilient material which comprises the metallic, Electrically conductive elements surrounds, or in the vicinity of the contact part between the metallic current conductor elements and the rubber-like, elastically resilient material existing on the electrically conductive part is semi-vulcanized by means of a high-frequency heating process, a heat rolling process or an electron beam irradiation process.

The term "semi-vulcanize" means that the rubber-like material is vulcanized to the extent that the flow of rubber at the time of vulcanization is controlled without affecting the Time of forming the power collection roller required adhesiveness of the rubber-like, elastically resilient material impaired is so that a flow of the rubber-like, elastically resilient material in the contact parts between the current collection element concerned and the conductive part can be prevented.

The method is explained in more detail below with reference to FIG. 37. It is here an arc of unvulcanized, rubber-like, elastically resilient material 83 around the outer circumference of a flexible cylindrical Part 82 is wound and fastened there, whereby this part 82 can be rotated around a rotary shaft 81 and then inflates radially outwards, so that it assumes the trochoidal shape shown in Fig. 38; it

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2 b 3 2 2 6

are then at the near opposite ends 83 ', 83 '' of the sheet 83 located parts of rigid reinforcing rings 84, 85 and the opposite ends 83 ', 83 "around the rigid rings 84, 85 bent and set in such a way.

A previously semi-vulcanized sheet 86 made of rubber-like, elastic Resilient material is then around the middle part of the arc 83 formed in this way from the cylindrical, unvulcanized, rubber-like, elastic resilient material attached. This sheet 86 of semi-vulcanized, rubber-like, elastically resilient material should preferably Have a width which is equal to or greater than the width of the current collection part 87, which is then in a subsequent Process step is arranged above.

It is then the electrically conductive part 88, for example a feed or connecting wire placed on the outer surface of the assembly thus formed, in such a way that the part 88 of the one The bent-back end 83 'of the sheet 83 made of unvulcanized, rubber-like, elastically resilient material is bent over toward the other End 83 '' extends.

It is then compressed air into the interior of the flexible cylindrical part is filled, whereby the cylindrical part 82 is inflated into the trochoidal shape. Because of this, the entire arrangement that from the sheets 83, 86 of unvulcanized material wound around the cylindrical part 82 or semi-vulcanized, rubber-like, elastically resilient material and the electrically conductive part 88, inflated into the trochoidal shape.

The current pick-up part 87 is on the outer circumference of the arc 86 made of semi-vulcanized, rubber-

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mi-like, elastic springy material attached. The power take-off part 87 consists of a large number of metallic conductor elements (Fig. 39), which are sandwiched between a layer 91 of semi-vulcanized rubber-like, elastically resilient material and an overlying layer 92 made of unvulcanized, rubber-like, elastically resilient Material are embedded, the tips or upper ends of the current conductor elements 94 on the top of the layer 92 of unvulcanized, rubber-like, resilient material, about the same height herewith, are exposed, while the lower ends of the Conductor elements 94 on the bottom surface of the layer 91 of semi-vulcanized, rubber-like, elastically resilient material, approximately at the same height herewith, are arranged or exposed.

An arc 93 of electrically conductive metal is in contact with all of them metallic conductor elements 94 held, so that the electrical conductivity between these elements 94 is guaranteed.

After the power take-off part 87 is attached to the entire assembly has been, another sheet 89 made of rubber-like, elastic resilient material, which has a predetermined size and design attached.

The air in the flexible cylindrical part 82 is then released, whereby the part 82 returns to its original shape. The thus formed and temporarily placed in a trochoidal shape The power take-off reel 90 is then removed from the cylindrical portion 82 used for temporary manufacture. On it will a flexible air cushion or any other known internal shape IM (Fig. 40) fitted inside the power take-off reel 90, and the latter then brought together with the inner mold IM for the purpose of vulcanizing and molding in an outer mold OM.

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In the method described with reference to FIGS. 37-39, steps are taken the previously semi-vulcanized sheet 86 made of rubber-like, elastically resilient Material attached to the central part of the arch 83 made of unvulcanized, rubber-like, elastically resilient material. Instead of this but the middle part of the arch 83 can also be made of unvulcanized, rubber-like, elastically resilient material are heated beforehand by any suitable heating device for the purpose of semi-vulcanizing. When fixing the current collection part 87 to the entire arrangement, the plurality of metallic current conductor elements 94 can first in the previously described manner and arrangement in the sheet described made of unvulcanized, rubber-like, elastically resilient material embedded and then only the tail corresponding to the part 91 are semi-vulcanized by means of any suitable heating device.

5G9884 / G488

Claims (32)

Claims 1. J current collection roller, characterized by a hollow wheel (2) made of a rubber-like, elastically resilient material, an electrically conductive rigid part (3) which is used to hold the ring gear (2) near the inner peripheral part (b) of the ring gear (2) is arranged, a power take-off composite part (5), which consists entirely of an annular arrangement of metallic conductor elements (11) which are embedded in the Außenumf angteil (a) of a power supply rail (R) touching ring gear (2), part of the Power collection composite part (5) is arranged approximately at the same level as the surface of the ring gear (2) touching the power supply rail (R), and an electrically conductive part (6), which the current collection part (5) and the electrically conductive rigid part (3) connects with each other. 2. Current collection reel according to claim 1, characterized in that the inner peripheral part (b) of the ring gear (2) to form two in Open ends (4, 4 ') extending in the circumferential direction are opened in the circumferential direction so that each of the two open ends (4, 4') is rigid annular Reinforcing parts (8, 8 ') are embedded and that the ring gear (2) and the electrically conductive rigid part (3) are assigned to one another in this way are that an airtight hollow chamber is formed into which compressed air can be introduced is. 3. current collection roller according to claim 1, characterized in that the ring gear (2) from the in contact with the power supply rail (R) standing part and from a main body with a part in the outer circumference provided groove is formed, which receives the power supply rail (R) contacting part. 50 9 8 8 4/0488 4. Current collection reel according to claim 3, characterized in that the side wall of the groove with the groove bottom surface forms an angle in the Magnitude of 90-110 ° includes (Fig. 3). 5. Current collection reel according to claim 1, characterized in that the current collection composite part (5) is at least one thick metallic is electrically conductive wire (17) which is embedded in the ring gear (2) along its circumference (Fig. 5). 6. current collection reel according to claim 1, characterized in that the current collection part (5) consists of a number of metallic needles (18) consists, which are arranged radially in the ring gear (2) (Fig. 6). 7. current collection roller according to claim 1, characterized in that the current collection part (5) consists of a fabric or a plate is formed, which contains in the circumferential direction of the ring gear (2) arranged metallic needles (19), and that the tips of the needles (19) of the Tissue on the part of the ring gear surface contacting the feed rail (R) are exposed (Figs. 7, 8). 8. current collection roller according to claim 1, characterized in that the current would decrease composite part (5) made of an annular web of fabric (23), which is made of metallic fibers and bent in a U-shape cross-section, and is composed of a ring (22), which consists of metal wires and with the curved part of the annular fabric web (23) is in engagement (Fig. 9, 10). 9. Current collection roller according to claim 1, characterized in that the current collection composite part (5) consists of a pile fabric made of metal fibers (25), which are stapled in a base sheet (24) (Fig. 11, 12). 509884/0488 10. Current collection reel according to claim 1, characterized in that the current collection part (5) consists of a number of individual U-shaped Metal wires (28) which are fixed in a flexible sheet (29) (Fig. 13, 14). 11. Current collection reel according to claim 10, characterized in that the flexible sheet (29) successively consists of an outer layer (29-1) made of elastically resilient material, an inner layer (29-2) made of fiber fabric and a lower layer (29-3) made of electrically conductive Material (Fig. 14). 12. Current collection reel according to claim 3, characterized in that both in the circumferential direction in the contacting the power supply rail (R) Part (5) of the ring gear (2) as well as in the circumferential direction in the bottom of the groove of the main body of the ring gear (2) reinforcement materials (12, 13, 14) are embedded (Fig. 4). 13. Current collection reel according to claim 1, characterized in that the electrically conductive part (6) is embedded in the ring gear (2). 14. Current collection reel according to claim 2, characterized in that one end of the electrically conductive part (6) on the rigid annular Reinforcing part (8, 8 ') is wound and that the electrically conductive part (6) and the electrically conductive rigid part (3) by means of an electrically conductive element are connected to one another. 15. Current collection reel according to claim 1, characterized in that a part of the electrically conductive part to the wall near the inner Peripheral part (b) of the ring gear (2) is exposed and is thereby directly connected to the electrically conductive rigid part (3). S09884 / 0488 16. Current collection roller according to claim 1, characterized in that the current collection composite part and the electrically conductive part from a number of units of current collection-Z current conductor elements (39, 40, 40 '), which are arranged parallel to one another to form a total of a ring shape, the respective Units of current collection / current conductor elements (39, 40, 40 ') by means of an electrically conductive sheet (41) are each connected to one another, that each unit of current collection / current conducting elements (39, 40, 40 ') consists of a single metal wire, which is a wave-shaped bent current collection part (39) and a pair with each other opposite ends of the power take-off part (39) of connected power line parts (40, 40 '), and that the crests (39) of the waves to the surface of the busbar contact part (39) of the Hohlr "des (30) are exposed, at about the same level as this, while the wave troughs (39 '') are exposed by means of the electrically conductive arch (41) are electrically and mechanically interconnected (Fig. 15). 17. Current collection reel according to claim 1, characterized in that the current collection part and the power line part of a number Pairs of flexible metal wires (46, 47) are assembled, that each metal wire pair a current collection part and a Power line part has that the power take-off part by machine Sewing the metal wire pairs (46, 47) to the power supply rail Contacting part of the rubber-like, elastically resilient Hohrad is formed, with one of the two metal wires as the upper thread (46) and the other metal wire is used as the bobbin thread (47), and that the power line part consists of the upper thread and / or the bobbin thread exists, which extend laterally to the stroma 'acquisition part (Fig. 16). 609834/0488 18. Current collection reel according to claim 1, characterized in that the current collection composite part consists of a number of units There is current collection elements which are arranged parallel to one another to form a total of a ring shape, and that each unit from current collection elements from a number of electrically conductive metal strips (48) with a gap or slot (51) at one end (50) consists, with a connecting wire (49) penetrating all gaps (51) or slots of the relevant electrically conductive metal strips (48) (Fig. 17). 19. Current collection reel according to claim 18, characterized in that each electrically conductive metal strip (52) on the with one Gap (55) provided with a part (54) formed with a greater thickness, so that the distance between each two adjacent, electrically conductive metal strips (52) arranged parallel to one another are kept constant (FIGS. 18-21). 20. Current collection reel according to claim 1, characterized in that the current collection part consists of a number of units of current collection elements consists, which are set side by side in a ring shape, and that each unit consists of current collection elements a comb-shaped composite part with a gap on one side and composed of a connecting wire, which the gaps of the respective Elements interspersed (Fig. 18-21). 21. Current collection reel according to claim 19, characterized in that the electrically conductive metal strips and the connecting wire are fixed immovably against each other by pressing the column together. 609884/0488 22. Current collection reel according to claim 20, characterized in that the unit of current collection elements and the connecting wire is fixed immovably against each other by pressing the column together. 23 power collection reel according to claim 1, characterized in that a number of the power collection composite part forming metallic Conductor elements (60) in a plurality of circumferential rows (60, 60 60 ⁿ ) on the surface of the power supply rail contact part (59) of the ring gear is arranged along its circumference, the free ends or tips of the current conductor elements (60) are exposed on the surface of the contact part (59), and that a current or Bus bar drawn between desired points on the surface of the power supply bar contact part (59) of the ring gear, at least one exposed end face of the metallic conductor elements (60) touches or crosses (Fig. 22-25). 24. Current collection reel according to claim 1, characterized in that the surface layer (a) of the contacting the power supply rail Ring gear part is made of a rubber composition which does not contain any agent for improving the adhesiveness with respect to metal, and that an inner layer (b) of this contact part is made of a rubber composition which is an agent for improving adhesiveness with respect to metal (Figs. 27, 28). 25. Current collection reel according to claim 1, characterized in that the current collection composite part (66) has a number of current conductor elements (68) with needle-like prongs that one ends of the respective needle-like prongs of the current conductor elements (68) on the outer surface of the power supply rail contact part of the ring gear, approximately on the same herewith, are exposed, and that the respective needle-shaped 509884/0488 Conductor elements (68) all at an equal angle of 30 to each other the tangent (X-X) are inclined to the circumference of the ring gear part touching the busbar (FIGS. 29, 30). 26. Current collection reel according to claim 25, characterized in that the needle-like prongs (68 ', 68 ") of the current conductor elements (68) are each bent into the shape of an inverted or sideways V (Fig. 31). 27. Current collection reel according to claim 1, characterized in that part of the connections (7) of the electrically conductive part (6) the outer surface of the inner peripheral wall (b) of the open ends (4, 4 ') of the ring gear (2) is exposed and that the electrically conductive part (6) on the exposed surfaces of its connections (7) with the electrically conductive rigid part (3) is electrically connected (Fig. 33). 28. Current collection reel according to claim 1, characterized in that a current conductor element (70) in the open end (4, 4 ') of the ring gear (2) embedded and exposed with its one part on the outer surface of the inner circumference of the ring gear (2) that the connecting parts (7) of the electrically conductive part (6) are electrically connected to the conductor element (70) and that the exposed part of the conductor element (70) is electrically connected to the electrically conductive rigid part (3) (Fig. 34, 35). 29. Current collection reel according to claim 1, characterized in that the electrically conductive rigid part (3) with at least one annular Projection (70) is provided which is provided in an annular shape on a part where the rigid part contacts the ring gear and that the projection or projections (70) cut into the ring gear and thereby electrically with the one embedded in the ring gear conductive part (6) are connected (Fig. 34, 35). 5O9884 / G488 30. Current collection reel, characterized by a pair of electrical conductive material of existing discs (72, 72 '), which are opposite to each other are arranged and act as an electrically conductive part, consisting of a rubber-like, elastically resilient material Bus bar contact part (71) which is airtightly fitted over the outer periphery of the two discs (72, 72 ') and a number of the Having metallic current conductor elements (73) forming the current take-off part, the two disks (72, 72 ') and the metallic current conductor elements (73) are electrically connected to each other (Fig. 36). 31. A method of manufacturing a ring gear for a current collection roller according to one of claims 1 - 29, characterized in that an annular power take-off part is divided into a rubber-like or rubber-shaped, elastically resilient material is embedded, wherein ei the power line part touching part of the power take-off part to the surface of the rubber-like, elastically resilient material is exposed to form an annular flow cn iene contact part of the ring gear, that the electrically conductive part in eiu resilient rubber material is embedded, a part of the electrically conductive part contacting the power take-off part to the surface of the elastically resilient one Rubber material is exposed to a main body of the ring gear to form that the exposed area of the power take-off part on the busbar contact part of the ring gear and the exposed area of the electrically conductive part in the main body of the ring gear are each semi-vulcanized and that finally the power chienenberührungs part of the ring gear and the main body of the ring gear are assembled in a predetermined positional relationship, whereupon the so formed arrangement in order to shape them into a one-piece ring gear, is subjected to a vulcanizing treatment. 5Ö988Ü / 0488 32. A method of manufacturing a ring gear for a current collection roller according to one of claims 1 to 29, characterized in that a sheet made of unvulcanized, elastically resilient rubber material is attached around the outer peripheral surface of a flexible cylindrical member that a sheet of semi-vulcanized, elastically resilient Rubber material and an electrically conductive part placed one on top of the other on the sheet made of unvulcanized, elastically resilient rubber material be attached that high pressure gas is filled into the flexible cylindrical part to this together with the sheet of unvulcanized, resilient rubber material to inflate into a trochoidal shape and thereby temporarily produce a ring gear that an arrangement consisting of a power take-off part, an unvulcanized rubber layer and a semi-vulcanized one Rubber layer to be attached to the arch made of semi-vulcanized, elastically resilient rubber material, with the power take-off part consists of a number of current conductor elements between the unvulcanized or semi-vulcanized one above the other Rubber layers are embedded and on the one hand with their upper ends or tips on the top of the superimposed rubber layers, at about the same height as this, are exposed and, on the other hand, with their lower ends on the underside of the superimposed rubber layers, at about the same level as this, are exposed, and that the high pressure gas is discharged from the flexible cylindrical part in order to remove the ring gear prefabricated in this way from the flexible cylindrical part, whereupon the ring gear after being placed in molds vulcanized and formed into the finished ring gear (Fig. 37-40). ⁷⁴⁷⁵ 509884/0488