EP2349904A2

EP2349904A2 - Current collector system for a vehicle, in particular for rtg container stacker cranes

Info

Publication number: EP2349904A2
Application number: EP09796295A
Authority: EP
Inventors: Arno SCHRÖDER; Michael Heitmann; Uwe Mehrwald; Alfred Dufke; Michael Raabe
Original assignee: Paul Vahle GmbH and Co KG
Current assignee: Paul Vahle GmbH and Co KG
Priority date: 2008-11-17
Filing date: 2009-11-17
Publication date: 2011-08-03
Also published as: DE102008057765A1; US20110220447A1; WO2010054852A2; WO2010054852A3; CN102239105A; JP2012508678A

Abstract

The invention relates to a current collector system for fastening to a vehicle, in particular a container stacker crane, wherein the vehicle can be moved along a line (T), and at least one busbar (S) is arranged on the line (T), wherein the current collector system has a collector trolley (W) having at least one busbar (AB), and the at least one current collector (AB) can be brought in contact with a busbar (S), wherein the collector trolley (W) of the current collector system is mounted to be freely displaceable vertically, in particular by means of at least one guide (F).

Description

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Description

Current collector system for a vehicle, in particular for container stacking cranes "RTG's"

The present invention relates to a power and / or data transmission system using a pickup truck, a route and a vehicle, wherein the vehicle is in particular a container stacker crane.

About 99% of all container stacking cranes are diesel-driven. Due to the steadily rising price of diesel fuel and noise and environmental reasons, the aim is to electrify the container stacking cranes. There are various container stacking cranes in use. There are narrow air-frosted van carriers that are used in Europe and can only stack containers in one row due to their small width. In these van carriers, the use of a busbar is rather uneconomical. Furthermore, there are the much wider rail-mounted gantry cranes, which run on crane rails and are already operated via busbars today. In addition, the rub- ber-Tired gantry cranes, which are also wide and can span multiple rows of container stacks and travel mostly in alleys along the stacked rows of containers. These cranes are air-ripened since they often have to change the lanes formed by the container stacks. Test systems are already installed in which the rubbed-tired gantry cranes are supplied with electrical energy by parallel busbars. The busbars are arranged on paths, drive on which pantograph cars along, contact the busbars with their pantographs and carbon brushes. The pantograph carriages can be connected to the crane via electrical cables, on which plugs are arranged, so that they can draw their electrical energy via the busbars. The Rubber-Tired-Gantry-Cranes, called RTG's for short, have an electric drive with diesel generator. To change lanes, the RTGs switch to their "diesel drive." Once they have entered an alleyway, the driver notifies the assistant that the cable of the pantograph vehicle is to be plugged into an RTG socket Trolley with chains attached to the RTG so that RTG moves the trolley over the chains and not over the electric cable.

A disadvantage of the system described above is that the assistants manually move the container stacking crane (RTG) by means of the

Power cable must connect to the trolley, in addition to the electric cable and the chains must hang on the RTG or insert. Another disadvantage is the bad one

Efficiency and thus the energy loss, in which one first generates the required drive current by means of a diesel generator and then supplies the electric drives.

Object of the present invention is to facilitate the manufacture of the electrical connection between a vehicle, in particular a container stacking crane, and the route, in particular to automate. This object is achieved with a current collector system having the features of patent claim 1. Furthermore, a route having the features of claim 16 and the features of the claims relating to claim 16 as well as a power and / or data transmission system are claimed.

The advantageous embodiments of the current collector system, the vehicle, the route and the transmission system result from the features of the respective jerk-related dependent claims.

The inventive pantograph system is not generally suitable only for container stacking cranes, but also for any vehicles, which must be moved along corresponding routes and supplied with electrical energy and / or data.

The basic idea of the invention is that an automatic contacting of the vehicle with the at least one busbar routed along the route is possible by means of the current collector system. The difficulty is to compensate for the enormous tolerances by an automatic process. These tolerances result from a rather inaccurate distance position of the vehicle, in particular crane, to the busbar system in the horizontal and vertical directions. For this purpose, the pickup carriage is aligned by means of a positioning and introduction device relative to the busbar and introduced into this with its current collectors. For this purpose, the vehicle advantageously has an arm or another adjusting device, by means of which the pickup trolley is adjustable in the horizontal direction. In the simplest case, the route has a contact plate against which the arm end, the adjusting device or the pickup trolley can be moved by means of a drive. The arm end can be provided for this purpose with at least one pressure roller or roller. For retracting the pickup carriage into the mounting rails arranged on the route, the vehicle must therefore be moved with its pickup vehicle in front of the positioning and insertion device, after which the pickup carriage is moved by means of a drive in the direction of the contact plate is moved until it comes to a contact with the contact plate. As soon as contact is made with the abutment plate, which can be determined in particular by means of sensors or via the drive current of the drive, which adjusts the trolley in a horizontal direction, the trolley is aligned horizontally. Now can be retracted by moving the vehicle of the pickup truck in the introduction device. The introduction device serves to position the pickup trolley vertically, in particular to lift it, so that it can be moved into the bus bar (s) with its current collectors. In a preferred embodiment, for this purpose, the introduction device on rails, which in the direction of travel of the vehicle from bottom to top - if the pickup car must be raised - extend. The pickup truck has rollers which rest on the running surface of the obliquely arranged rails, which raises the pickup truck as the vehicle moves on. In this case, either the entire arm with the pickup truck located thereon or only the pickup truck can be raised. In the simplest case, only the pickup truck is raised. The pickup truck is advantageously guided by vertically arranged rods. The rods can either be attached to the arm or the trolley and are each vertically displaceable on the other part - arm or doffer - stored. In an alternative embodiment, instead of four vertical bars, only one vertical tube is arranged, which allows a compensatory turning of the pickup trolley in the horizontal direction, if the arm or the other adjusting device does not engage exactly at right angles to the direction of travel.

The positioning and retraction systems are each arranged at both ends of an alley.

In order to ensure that imports of the pantographs into the busbars are carried out by moving the vehicle, a receiving hopper may be provided on the busbar which is made of The prior art is sufficiently known from conventional busbars ago.

The arm on which advantageously the pickup truck is arranged, can be advantageously designed as a telescopic arm. However, it is also possible to provide a rigid long profile, which is adjusted by means of a drive, in particular rack drive.

The invention provides greater economy due to lower fuel costs and a reduction in maintenance and repair costs. The electrification of the vehicles will result in a reduction in noise and C0 ₂ emissions as well as other harmful emissions.

Through the use of busbars within the lanes, the container stacking cranes can be supplied with electrical energy within the lanes. Thus, a diesel engine is required only outside the streets. The current is drawn off in each case via a moving customer carriage, in particular pantograph carriage, which is arranged on the crane. When changing lanes, the pickup trolley moves out of the line and is thus automatically disconnected. By means of diesel drive the crane can move in the new alley.

Since the space conditions and requirements in the container port are different, two different busbar arrangements can also be used in combination. Thus, it is possible to arrange busbars in all lanes on one side, as shown in the figure Ia. The alleys G are formed by the container stack C. The RTG cranes move either parallel to the busbars or routes S, where they are driven by their electric drives. As soon as the cranes RTG leave the lanes G, they can drive to another lane G by means of a diesel drive.

The figure Ib shows a cross-sectional view through a known from the prior art route T, on the one side four Bus bars S are attached. On the route T is a pickup W movable and supported by rollers AB _R , which roll on a lane of the route T. The pickup W has several pantograph AB, which abut the busbars S by means of carbon brushes. Below or above the pantograph carriage W, an electric module M is arranged, which is moved with the pantograph carriage W along the route T. In the test systems known from the prior art, the module M is connected via an electrical line L to the crane RTG, which is movable by means of rubber tires R on the carriageway F along the route T. The chains or ropes to take the car W are not shown. Figures Ia and Ib show only the arrangement of busbars on one side of the route T. However, it is also possible along the route T on both sides of busbars S to arrange, so that the route T between two RTG's is arranged, such as it is shown in Figures 2a and 2b.

In contrast to the previously known test system, in the system according to the invention each crane is assigned a pickup truck which is fastened to the crane itself. This results in a huge cost advantage, since hereby the number of pickup trolleys corresponds to the number of cranes. In contrast, in the old systems, several picking trolleys were used for each route in order to provide a plug-in option for each "workstation" of the crane.

The current collector system according to the invention consists in the simplest case of an arm, which may be in particular a telescopic arm, which is mounted with its one end to the vehicle and the other end carries the doffer. The pickup truck is mounted freely displaceable on the arm in the vertical, so that it can be lifted according to the introduction into the busbars.

By virtue of the advantageous use of diabolo rolls, which are characterized by having a concave, inwardly curved, have almost semicircular or conical tread, the usually four guide rails can be replaced by two round cross-section rod or tubes. Advantageously, only three rollers in the form of diabolo rolls are required on the pickup trolley so that the pickup trolley is safely guided and centered. Advantageously, a leadership Diabolorollen and round rods or tubes for the vertical leadership and storage of the pickup car at the head of the telescopic arm can be provided. Overall, the system can be significantly simplified by the use of the above roles, compact, much easier and cheaper to manufacture and assembled, while the leadership of the pickup car is optimized. In addition, a Fuhrungsrohr can be manufactured at the same weight cheaper and with greater resistance moment against deflection than conventional U-profile mounting rails.

The invention is explained in more detail with reference to figures.

Show it:

Figures Ia and Ib: busbars arranged on one side on a route;

Figures 2a and 2b: two-sided busbar arrangement on a route;

Figure 3: inventive design of vehicle and track - with moved against plate arm end;

Figure 4 of the positioning and insertion raised lifting carriage;

Figure 5: fully raised doffer, which is retractable by further movement of the vehicle with its pantographs in the busbar; 6 shows a perspective view of a second possible embodiment of a pickup trolley and a route with round bars as carrier rails;

Fig. 7: side view and partially sectioned view of the route with takeaway car acc. Fig. 6;

Fig. 8: schematic representation of the embodiment according to. Figures 6 and 7;

Fig. 9: Top view of the arrangement acc. FIG. 8;

FIG. 10: schematic representation of an introduction device for the embodiment according to FIG. FIGS. 6 to 9.

FIG. 3 shows a route T according to the invention, consisting of vertical stands T _s and horizontal carriers T _H. On the horizontal carriers T _H busbars S and DIN rails TR are arranged. FIG. 3 shows the location of the tracks on which the positioning and insertion device PE is arranged, that is to say the point at which the vehicle RTG, in particular a crane, has to be positioned so that the pickup carriage W arranged on the vehicle RTG the route T or the busbar S can be retracted. Of the crane RTG only one pillar RTG _{B is} shown schematically by means of a vertical cuboid, to which usually at least one tire is attached. On the pillar RTG _B is a telescopic arm A, consisting of the individual arm segments Ai, A ₂ and A ₃ , attached. At the last segment A ₃ , a system part AT in the form of one or two pinch rollers is arranged frontally. By the extension of the telescopic arm A, the rollers AT will ultimately hit the plate P, whereby the likewise arranged on the segment A ₃ pickup carriage W is aligned horizontally for retraction into the support rails ETR of the introduction device PE. On the trolley W are vertically arranged rod ST fixed, which are mounted in guides F on the arm A displaced in the vertical direction. As soon as the crane RTG is moved in the direction of travel R ₁ , the rollers AB _{R set} on the running surfaces L _{ETR of} the obliquely arranged mounting rails ETR, which is raised when moving on in the direction of R _{1 of} the trolley W with the rods ST. The obliquely formed as a ramp and arranged mounting rails ETR the introduction device PE end adjacent in the region of the support rails TR, which are arranged so that the pickup trolley T and the busbar S follows and it is ensured that the current collector AB always contact the busbars S. to have. The pickup W has a housing G on which the bars, the spring-loaded pantograph AB and the rollers AB _R are arranged. Via a flexible cable K, which is suspended from the individual segments A _{1 of} the telescopic arm A, the current collector AB are connected to the crane electronics.

FIG. 4 shows a position in which the crane RTG has moved in the direction of R ₁ , and the rollers AB _R of the pickup carriage W have already come to rest on the running surface L _ETR .

FIG. 5 shows a position in which the pickup carriage W has already been raised to the height of the carrier rails TR, as a result of which the bars ST have been moved upwards but still engage in their guides F.

As a rule, the crane RTG or the vehicle is not track-bound, so that it may happen during the procedure in the direction of travel R ₁ that the distance of the vehicle from the route T changes. In addition, distance changes always occur in the vertical direction, which can arise, for example, as a result of different air pressure in the tires and general height tolerances. In order to be able to continuously compensate for these changes in distance, it must be ensured that the pickup carriage can move in the horizontal direction relative to the vehicle. The telescopic arm A must therefore be designed so that its length can change due to the forces acting between the line and the vehicle forces. Vertical balance is then provided by the vertical bar (ST) or a vertical tube.

FIGS. 6 to 9 show a further possible embodiment, in which the pickup carriage W is displaceably mounted in the vertical direction on the head A'κ of the telescopic arm A ¹ . For this purpose, rollers A ' _{KR are} rotatably mounted on the head A' _{κ of} the telescopic arm A ¹ , which run in the vertically arranged guides W ' _{VF of} the pickup trolley and prevent the pickup trolley from tilting. At the pickup W, the current collector AB ¹ are arranged, which engage in the busbars S ¹ for contact. The stander T ' _{s of} the route carry the DIN rails T _R ', which are formed by round cross-section rod. As rollers, diabol rollers AB ' _R are arranged on the pickup carriage W, which serve for horizontal and vertical centering of the pickup carriage W. The Diabolorollen AB ' _R have a concave or in cross-section in approximately semi-circular tread, which bear against the cross-sectionally circular support rails T _R '. In principle, three roles AB ' _R sufficient so that the pickup W is guided safely. Of course, it is also possible to provide more than three, for example two upper and two lower rollers.

FIG. 7 shows a side view and a partially sectioned view of the route with its stands T ' _s and mounting rails T' _R fastened thereto via holders T ' _H and busbars S ¹ . On a route Stander T _'s the holders are T'', respectively _R, so that because of the now only two superposed Fuhrungsund support rails T' _H for which gegenuber- lying guide rails T _R realize a compact and less space occupying route initiated. The holders T ' _H for the opposite support rails T' _R are bolted together, riveted or welded together, so that a high stability for the entire route is achieved.

FIG. 8 shows a schematic representation of the embodiment according to FIG. FIGS. 6 and 7. The pickup carriage W is formed by a frame construction W ' _R , at which the rollers AB' _R and the pantograph AB ^{1 are} attached. On the support frame W ' _R are also the vertical Fuhrungsstabe W' _VF attached or integrated, which serve to guide the at the head A ' _{κ of} the telescopic arm A' arranged rollers A ' _KR . Optionally, springs may be provided, not shown, which position the pickup carriage W in a vertical position relative to the head A ' _{κ of} the telescoping arm A' unless the pickup carriage W is guided by the support rails T _R '. FIG. 9 shows a top view of the arrangement according to FIG. FIG. 8.

FIG. 10 shows a possible embodiment for an introduction device for the embodiment according to FIG. of Figures 6 to 9. The introduction device has an upper baffle PRO and a lower baffle PR ' _O. The upper baffle PR ' _O has a horizontal baffle PR' _H and a vertical baffle PR ' _V , which cooperate with the upper rollers AB' _{R of} the pickup carriage W for horizontal and vertical positioning. The lower baffle PR 'u is used for horizontal alignment of the lower roller AB' _{R of} the pickup car W. The introduction device has at least one obliquely arranged route T ' _RR , on which the lower roller AB' _{R of} the pickup carriage W touches down during the process. As a result, the trolley W is raised so far that the upper rollers AB ' _{R of} the pickup truck W are located above the upper support rail T' _R. After complete retraction of the collector trolley W whose rollers embrace AB _'R from above and below the support rails T' _R, whereby the collector trolley W can no longer leave the path. Relative vertical tolerances and road bumps are compensated by the vertical guidance of the pickup carriage W at the head A ' _{κ of} the telescopic arm A ¹ .

It goes without saying that the first embodiment, which is shown and described in FIGS. 3 to 5, is likewise equipped with the diabol rollers as rollers and cross-sectionally round mounting rails, as illustrated and described in FIGS. 6 to 10 can.

Claims

GE VA0150wo17.11.09 all01506P atent

1. pantograph system for attachment to a vehicle, in particular a container stacker crane, wherein the vehicle along a route (T, T ') is movable, and on the route at least one busbar (S, S ¹ ) is arranged, wherein the pantograph system a Abnehmerwagen ( W, W) having at least one pantograph (AB, AB ¹ ), and the at least one pantograph (AB, AB ') with a busbar (S, S') is brought into contact, as you rchgekennzeichnet that the customer car (W, W ¹ ) of the current collector system, in particular by means of at least one guide (F, F '), is mounted vertically freely displaceable.

2. pantograph system according to claim 1, since you rchgekennzeichnet that the guide (F) at one end of an arm (A), in particular at the free end of a telescopic arm, or on the Abnehmerwagen (W, W ') itself is arranged, wherein the Arm (A, A ') on the vehicle fastened or fastened.

3. pantograph system according to claim 1 or 2, since you rchgekennzeichnet that the Abnehmerwagen (W, W ¹ ) by means of a drive (AN) is adjustable in the horizontal direction.

4. pantograph system according to claim 3, d a d u r c h e g e k e n e c e in that the telescopic arm (A, A ') by means of the drive (AN) is retractable or retractable.

5. pantograph system according to claim 3 or 4, characterized in that the Abnehmerwagen (W, W) when driving by means of at least one on the route (T, T ¹ ) arranged leadership, in particular in the form of mounting rails (TR, TR ') _/ relative to Road (T, T ') is held in position.

6. pantograph system according to one of claims 1 to 5, characterized in that a storage of the pickup carriage (W) by at least one vertical rod (ST, W ' _VF ) is formed, which either on the pickup truck (W, W') attached to the vehicle , in particular whose arm (A, A '), is mounted displaceably, or that at least one vertical rod (ST) is fastened to the vehicle, in particular to its arm, on which the pickup carriage (W) is displaceably mounted.

7. pantograph system according to one of the preceding claims, characterized in that the Abnehmerwagen (W, W ') at least one roller (AB _R , AB' _R ) for unrolling on the at least one support rail (TR, TR ¹ ) and the at least one Emfuhrungstragschiene ( ETR, ETR ') of a positioning and insertion device (PE, PE ¹ ) of the route (T, T').

8. pantograph system according to one of the preceding claims, characterized in that the Abnehmerwagen (W) has a housing (G) or frame (W ' _R ) on which the current collector (AB, AB') are resiliently mounted, wherein on the housing ( G) or frame (W ' _R ) at least one rod (ST, W' _VF ) is mounted or mounted vertically displaceable.

9. pantograph system according to one of the preceding claims, characterized in that on the arm (A) and / or the pickup truck (W, W) at least one system part (AT, AT '), in particular in the form of a pressure roller, is arranged, which by horizontal movement of the pickup truck (W, W ¹ ) for engagement with a positioning means (P, PR ' _H ), in particular a contact plate, the track (T, T') can be brought, wherein the Abnehmerwagen (W, W ') in the successful positioning of the positioning means (P, PR' _H ) in the horizontal direction for the retraction into the at least one busbar (S, S ') is positioned.

10. pantograph system according to one of the preceding claims, dadu r ch ge ke nn zei chne t that the pickup trolley or its storage in the horizontal direction is resiliently mounted on the arm (A, A ¹ ).

11. Current collector system according to one of the preceding claims, characterized in that the

Current collector (AB, AB ') by means of flexible cables (K), which are at least one point on the arm (A, A') attached or suspended, are connected to the vehicle electronics.

12. Current collector system according to one of the preceding claims, characterized in that the

Casters (AB ' _R ) of the pickup carriage (W') have a concave tread, and are in particular Diabolorollen.

13. Current collector system according to one of the preceding claims, characterized in that the pickup carriage (W ¹ ) has at least two parallel and mutually spaced vertical guides (W ' _VF ) _/ in particular circular cross-section rods, has, at least two, in particular three or four, rollers (A ' _KR ) abut with their treads, which are rotatably mounted on the head (A'κ) of the arm (A') are arranged.

14. A vehicle having a pantograph system as claimed in any one of the preceding claims, characterized in that the vehicle has a drive, by means of which the vehicle is movable independently of the route (T), wherein the drive is an electric drive, which is fed from an energy store located in or on the vehicle, or is a fuel-powered drive, wherein the vehicle is drivable by means of an electric motor, if provided the vehicle has contact with the busbar (S) by means of the pickup truck (W).

15. The vehicle according to claim 14, since there is no such that the vehicle has a hybrid drive.

16. route (T) with at least one busbar (S) for transmitting electrical energy and / or data, which along a track for at least one movable vehicle, in particular a vehicle according to one of the preceding claims, arranged along the Track at least one busbar (S) and at least one support rail (TR) for a pickup truck (W) is arranged, and at least one pantograph (AB) of the pickup truck (W) with an associated busbar (S) is contacted, dadu r ch ge ke nn zei chn et that the route has at least one positioning and insertion device (PE) for the pickup truck (W).

17. route (T) according to claim 16, characterized in that the positioning and introduction device (PE) has a positioning means (P), in particular in the form of a contact plate for horizontal positioning of the pickup carriage (W) relative to the busbar (S) ,

18. route (T) according to claim 16 or 17, d a c h e c e n e c i n e that the positioning and

Insertion device (PE) at least one obliquely from bottom to top in the direction of at least one support rail (TR) extending Einfungungung (ETR), on which the pickup carriage (W) is movable.

19. Route (T) according to claim 18, wherein a pair of entry guide rails (ETR) are arranged parallel to one another and serve to lift the pickup trolley (W).

20. Route (T) according to claim 18 or 19, since you rchgekennzeichnet that the tread (L _ETR ) of the insertion support rail (ETR) with its upper end, in particular without an offset, adjacent to a mounting rail or its tread (L _TR ) ,

21 route (T) according to any one of claims 16 to 20, since you r ch ge kennzei net, that the tread (L _ETR ) of the introduction support rail (ETR) is formed by a collar of a, in particular dreieckformig, formed sheet.

22. Route (T) according to claim 16, wherein the at least two insertion guide rails (ETR) arranged parallel to one another form a funnel for the pickup carriage (W).

23. Route (T) according to any one of claims 16 to 22, since you rchgekennzeichnet that the route on each or both sides each two parallel and mutually beabs- tandete, in particular superposed, support rails (T _R , T ' _R ), serving as run and guide rails for the pantograph carriage (W, W '), wherein the support rails (T _R , T' _R ) are formed by tubes.

24. Power and / or data transmission system using a route (T), in particular according to one of the preceding claims, and a along the route (T) movable vehicle, in particular according to one of the preceding claims, wherein the vehicle has a first drive by means of which the vehicle is movable independently of the route (T), wherein the first drive may be an electric drive, which is located in or on the vehicle Energy storage is powered, or a fuel-powered drive, wherein the vehicle by means of an electric motor, which may also be the first drive is driven, provided that the vehicle by means of the pickup truck (W) has contact with the busbar (S).

25. The power and / or data transmission system according to claim 24, characterized in that the vehicle has a hybrid drive.

26. Electricity and / or data transmission system according to claim 24 or 25, in which a

Vehicle having an arm (A) which is movable and / or extendable for producing an electrical connection in the horizontal direction, and that the Abnehmerwagen (W) is mounted displaceably in the vertical direction on the arm (A).

27. Power and / or data transmission system according to claim 26, characterized in that the at least one current collector (AB) of the pickup truck (W) by means of a positioning and insertion device (PE), in particular in the form of a funnel, in a busbar (S) of Route (T) is insertable.