EP3013726B1 - Energy supply system - Google Patents

Description

The present invention relates to a power supply system having the features of the preamble of claim 1, a hoist having such a power supply system and a vehicle having such a power supply system or such a hoist.

A generic energy supply system is shown for example in the Austrian Utility Model 682/2011.

A winding device for telecommunication cable, not for a power supply, is disclosed in Japanese Patent JP 2002348047 A shown, which represents a non-generic prior art. It describes how a signal line for computer networks (LAN) is helically wound around two variably spaced winding axes, at least one of which is linearly displaceable, wherein the signal cable is in each case guided by a deflection roller in each reversal point. The movable winding axes are equipped with a power storage in the form of a helical or spiral spring, with typical tensile forces in a range of about 1 to 3 Newton.

Further energy supply systems go out of the pamphlets DE 34 20 672 A1 . EP 1 394 094 A2 . JP 2007 015841 A . DE 33 09 319 A1 and DE 27 20 159 A1 out. JP 2007 015841 A discloses the preamble of claim 1. The object of the invention is to provide an improved over the prior art energy supply system.

This object is achieved by a power supply system having the features of claim 1, a hoist according to claim 13 and a vehicle according to claim 14 and 15. Advantageous embodiments of the invention are defined in the dependent claims.

The fact that the winding device has an adjusting device with which the distance between the two winding axes is adjustable, the two winding axes can be moved towards each other or away from each other. As a result, the storage space for the at least one up and unwindable on the winding device, energy transmitting line can be increased if the two winding axes move away from each other and on the other hand, the energy transmitting line can be further developed when the two winding axes are moved towards each other.

In the case of the Austrian utility model GM 682/2011, unwinding of the energy-transferring cable can only take place until the line still extends around both winding axes and also between the winding axes. This piece of wire can not be handled.

In the present energy supply system, however, a settlement can continue, since the two winding axes can move towards each other and thus at full settlement of the energy-carrying line only that part of the line can not unwind, which runs around the two winding axes. Thus, in this Energiezuführsystem the energy-transmitting line continue to extend or less line is needed to achieve an equal extension length.

To be particularly advantageous, it has been found that the adjusting device has at least one axis guide for at least one of the two winding axes for substantially linear adjustment of the distance between the two winding axes.

According to a preferred embodiment, it can be provided that the winding device has a drive for winding up and / or unwinding the at least one energy-transmitting line.

Furthermore, it can preferably be provided that the drive moves at least one of the two winding axes along the at least one axle guide.

It has proven to be particularly advantageous if the drive has a force accumulator.

Particularly preferably, it can be provided that the energy accumulator has at least one hydraulic cylinder and / or one spring device.

It has proven to be particularly advantageous if the energy accumulator has at least one gas spring or a helical spring.

It is provided that the winding device for the at least one energy-transmitting line, at least in the region of the two winding axes each having a cable guide.

It has also proved to be advantageous that the cable guide has individual guide elements on which rests the at least one energy-transmitting line.

Preferably, it can further be provided that the individual guide elements are designed as rollers.

It is further provided that a winding and unwinding of the at least one energy-transmitting line takes place in a spiral shape by the wiring.

According to a preferred embodiment it can be provided that between the located on an inner spiral path at least one energy transmitting line and located on an outer spiral path at least one energy transmitting line, a gap is formed, whereby the located on the inner spiral path at least one energy transmitting line of the the outer spiral path is at least one energy transmitting line spaced.

It has proven to be particularly advantageous if the extension direction and the feed direction of the at least one energy-transmitting line is substantially parallel to the straight line connecting the two winding axes.

Conveniently, it can be provided that the at least one energy-transmitting line is designed as an electrical line.

Likewise, it has been found to be advantageous if the at least one energy-transmitting line is designed as a hydraulic line.

It has proven to be particularly advantageous if two or more energy-transmitting lines can be wound spirally around the two winding axes.

It is particularly preferably provided that at least one energy-transmitting line is designed as an electrical line and at least one energy-transmitting line as a hydraulic line.

Preferably, it can further be provided that the winding device has a housing.

Specifically, protection is also desired for a hoist, in particular a crane, with an energy supply system - in particular for a tool that can be fastened or fastened to the hoist - according to one of claims 1 to 12.

Protection is also desired for a vehicle with an energy supply system - in particular for a tool that can be fastened or fastened to the vehicle - according to one of claims 1 to 12.

Furthermore, protection is desired for a vehicle with a hoist according to claim 15.

Fig. 1

eine perspektivische Darstellung eines Krans mit Kransäule, zwei Auslegern und mehreren Auslegerverlängerungen

Fig. 2

eine perspektivische Darstellung eines Krans in zusammengeklapptem Zustand und eingefahrenen Auslegerverlängerungen

Fig. 3

eine Seitenansicht eines Kranauslegers mit teilweise ausgefahrenen Auslegerverlängerungen

Fig. 4

eine Seitenansicht einer Wickelvorrichtung im aufgewickelten Zustand

Fig. 5

eine Seitenansicht einer Wickelvorrichtung in abgewickeltem Zustand

Fig. 6

ein Schnitt durch eine Wickelachse der Wickelvorrichtung

Further details and advantages of the present invention will be explained in more detail below with reference to the description of the figures with reference to the exemplary embodiments illustrated in the drawing. Show:

Fig. 1

a perspective view of a crane with crane column, two arms and several boom extensions

Fig. 2

a perspective view of a crane in the folded state and retracted boom extensions

Fig. 3

a side view of a crane boom with partially extended boom extensions

Fig. 4

a side view of a winding device in the wound state

Fig. 5

a side view of a winding device in unwound condition

Fig. 6

a section through a winding axis of the winding device

In the following description of the figures, the description of the energy supply system 110 for a tool that can be fastened or fastened to a hoist always takes place on a hoist, which is designed as a crane 100. It will be appreciated by those skilled in the art that such an energy delivery system 110 may be used with all other hoists such as hoists, trolleys, hoists, winches, etc. with routine adjustments. Also, such power supply system 110 may be routinely adapted to use on vehicles, whether these vehicles have a hoist with a power supply system 110 or even if they have a power supply system 110 alone - without hoist -.

FIG. 1 shows a perspective view of a crane 100, wherein in this preferred embodiment, the crane 100 is designed as a loading crane.

The crane 100 in this case has a crane column 101 and two hydraulically actuatable arms 102 and 103. The boom 103 in turn has a plurality of boom extensions 104, 105, 106, 107, 108 and 109. On the arm 103 while the housing 20 of the winding device 10 of the power supply 110 for a fastened to the crane 100 tool - in particular hoist - attached.

In the winding device 10, the energy transmitting line 1 is wound, which extends with one end to the last boom extension 109.

When extending the boom extensions 104 to 109, the line 1 is unwound from the winding device 10.

FIG. 2 shows a perspective view of the crane 100 in the collapsed state of the two arms 102 and 103. In this case, all boom extensions 104 to 109 are fully retracted. The energy transmission line 1 is wound in the housing 20 of the winding device 10.

FIG. 3 shows a side view of the boom 103 with extended boom extensions 104 and 105th

The energy supply system 110, consisting of the winding device 10 and the line 1, on the one hand with its winding device 10 attached to the arm 103 and on the other hand, one end of the line 1 is attached to the last boom extension 109 and moves together with this.

FIG. 4 shows a side view of the winding device 10. The winding device 10 in this case has an up and unwound energy-transferring line 1, which is wound several times around the two winding axes 11 and 21 of the winding device 10. The two winding axes 11 and 21 are spaced from each other, which means that even long lines 1 can be wound on the winding device 10, without causing the diameter of the winding device 10 on the two winding axes 11 and 21 greatly increased, as is the Case would be if only a single winding axis were present and a line of equal length 1 would have to be wound up.

FIG. 4 shows an energy supply system 110 for attachable to a hoist or fixed tool with a winding device 10 for at least one winding on the winding device 10 and unwindable, energy transfer line 1, wherein the winding device 10 has a first winding axis 11 and a front of the first winding axis 11 to a Distance X spaced second winding axis 21 around which the at least one energy transmitting line 1 can be wound, wherein the two winding axes 11 and 21 are substantially parallel to each other. In this case, the winding device 10, an adjusting device 30, with the distance X between the two winding axes 11 and 21 is adjustable (see also FIG. 5 ).

In this preferred embodiment, the adjusting device 30 has two axle guides 31 and 32 for the winding axis 21 for substantially linear adjustment of the distance X between the two winding axes 11 and 21.
Furthermore, the winding device 10 has a drive for winding and / or unwinding the at least one energy-transmitting line 1. This drive moves the winding axis 21 along the two axis guides 31 and 32. To accomplish this, the drive has a power storage, in this case the hydraulic cylinder 33. Likewise, this could of course also work with a spring device. For example, the energy accumulator could have a gas pressure spring or a helical spring.

Furthermore, the winding device 10 for the energy-transmitting line 1 in the region of the two winding axes 11 and 21 each have a line guide 40, wherein the line guide 40 has individual guide elements 41, on which the energy-transmitting line 1 rests. In this preferred embodiment, these individual guide elements 41 are formed as rollers in order to realize a preferred transport of the power transmission line 1 in the wiring 40.

Through this wiring 40, the winding and unwinding of the power-transmitting line 1 in this preferred embodiment takes place in a substantially vertical plane and this spirally.

In order to avoid frictional losses on the spiral winding of the energy transmitting line 1, it is preferably provided that a space 44 is formed between the energy transmitting line 1 located on an inner spiral path 42 and the energy transmitting line 1 located on an outer spiral path 43 the energy transmitting line 1 located on the inner spiral path 42 is spaced from the energy transmitting line 1 located on the outer spiral path 43.

If the extension direction and the feed direction of the at least one energy-transmitting line (1, 2, 3, 4) substantially parallel to the line connecting the two winding axes (11, 12), so in the assembled state (see, for example FIG. 3 ) on the boom 103 existing space for the housing 20 of the winding device 10 of the energy supply 110 optimally used and thus a high storage capacity can be achieved with low space requirements. In addition, a twisting of the energy transmission line 1 can be avoided thereby.

In a preferred embodiment, it is provided that the energy-transmitting line 1 can be designed both as an electrical line and as a hydraulic line. In this embodiment present here are four energy-transmitting lines 1, 2, 3 and 4 (see FIG. 6 ) intended. This makes it possible for both electrical lines and hydraulic lines to be routed via this winding device 10 of the energy supply system 110.

• In diesem bevorzugten Ausführungsbeispiel werden die energieübertragenden Leitungen 1, 2, 3 und 4 in einer Ebene über geeignete Führungselemente 41 (in diesem Fall Rollen) auf geraden und bogenförmigen Führungsbahnabschnitten der Leitungsführung 40 (in der Darstellung gerade und 180-Grad-Bögen) um wenigsten eine verschiebbare Wickelachse 21 umgelenkt und mit wenigstens zwei Strängen ausgeführt (in diesem bevorzugten Ausführungsbeispiel sind es sechs Stränge). Bei mehr als zwei Strängen wird das System in der Ebene spiralförmig nach außen hin erweitert.

For functional description of the embodiment of the FIGS. 4 . 5 and 6 :

• In this preferred embodiment, the energy transmitting lines 1, 2, 3 and 4 in a plane via appropriate guide elements 41 (in this case rollers) on straight and arcuate guideway portions of the wiring 40 (in the illustration straight and 180-degree arcs) least a displaceable winding axle 21 deflected and executed with at least two strands (in this preferred embodiment, there are six strands). With more than two strands, the system is spirally flared outward in the plane.

It is also possible for a plurality of energy-transmitting lines 1, 2, 3 and 4 to be arranged next to one another (one above the other) on the same winding axes 11 and 21.

In the example shown here the FIGS. 4 to 6 with six strands of energy-carrying lines 1, 2, 3 and 4, the winding axis 11 is fixed, the second winding axis 21 is on a longitudinal axis perpendicular to the winding axes 11 and 21 displaced.

Two of the six strands of the power transmission line 1 are in the FIG. 4 shown interrupted to allow the view of the hydraulic cylinder 33 and the cable 34.

The displaceable part of the winding device 10 (second winding axis 21) is referred to below as a carriage. The carriage is guided on the axle companies 31 and 32 of the adjusting device 30. By moving the carriage (second winding axis 21) toward the first winding axis 11, the energy transmitting lines 1, 2, 3 and 4 are discharged from the winding device 10, by moving away from the first winding axis 11, the energy transmitting lines 1, 2, 3 and 4 of the winding device 10 in the energy supply system recorded (stored).

The storage capacity of this Energiezuführsystems is thus the maximum distance X, when the two winding axles 11 and 21 are pushed apart the farthest times, times the number of straight strands of the energy-transmitting lines 1, 2, 3 and 4.

One end of the power transmission line 1, 2, 3 and 4 is fixed to the fixed part of the winding shaft 11 and can serve as a connection to a control valve of a crane out, the other outer end is loosely connected to the extendable thrust system of the crane.

The displaceable winding axle 21 is preferably provided with suitable means, such as e.g. Gas springs and hydraulic cylinders, biased to the position in which the two winding axles 11 and 21 have the maximum distance.

In this embodiment, a hydraulic cylinder 33 is used, whereby the bias voltage, depending on the state of the winding device 10, is optimized for the respective operating state. It is thus possible, when extending (storage output) or at standstill of the telescopic system of the crane, a low bias voltage and when retracting (memory recording) apply a higher bias to improve the storage process (retraction of the power transmission lines 1, 2, 3 and 4). The hydraulic cylinder 33 or its hydraulic system can additionally be replaced by suitable measures, e.g. through a pressure accumulator, are supported.

Since the biasing member (in this embodiment, the hydraulic cylinder 33) must cover the entire stroke of the winding device 10, a reduction is advantageous for reasons of space. This may be - as in this embodiment - a reed in rope 34, which between the hydraulic cylinder 33 and the Carriage - so the movable winding axis 21 - is arranged. The hydraulic cylinder 33 then brings the biasing force preferably via train. By a double reeving of the cable 34, the stroke of the hydraulic cylinder 33 and the biasing member is half of the stroke of the carriage - so the movable winding axis 21 - the storage unit.

In this system, since the function is provided by shifting the carriage, the helical geometry of the power transmission lines 1, 2, 3 and 4 is always maintained. The energy transmitting lines 1, 2, 3 and 4 do not twist (twist) and no twist discharge (e.g., rotary feedthrough) is required. The energy transmission lines 1, 2, 3 and 4 must be able to transmit the necessary for the function of tensile forces.

By the execution of the arcuate guide sections (180 °), on individual small guide elements 41, the space required is less than in execution similar to a pulley system in which for each deflection (180 °) large rollers are used with the radius of the deflection path. This embodiment of the deflection with several small, individual rollers (guide elements 41) requires significantly less space.

By outwardly in the plane expandable spiral position of the individual energy-transmitting lines 1, 2, 3 and 4, the space requirement in depth at several strands does not increase. It can be several energy-transmitting lines 1, 2, 3 and 4 - as in this embodiment 4 - parallel, so next to each other, are arranged.

Since the storage shape remains geometrically always the same regardless of the memory state, there is no twisting of the energy-transmitting lines 1, 2, 3 and 4. The described arrangement can be achieved with a small space requirement, a high storage capacity.

Claims (15)

1. An energy feed system (110) - in particular for a tool which is or can be fixed to a lifting device - comprising

   - a winding device (10) for at least one energy-transmitting line (1, 2, 3, 4) which can be wound on and unwound from the winding device (10), wherein the winding device (10) has a first winding axis (11) and a second winding axis (21) spaced from the first winding axis (11) by a spacing (1), around which the at least one energy-transmitting line (1, 2, 3, 4) can be wound, wherein the winding device (10) has an adjusting device (30) with which the spacing (X) between the two winding axes (11, 21) can be adjusted, wherein the two winding axes (11, 21) are substantially parallel to each other and the winding device (10) for the at least one energy-transmitting line (1, 2, 3, 4) has a respective line guide (40) at least in the region of the two winding axes (11, 21), characterised in that winding up and unwinding of the at least one energy-transmitting line (1, 2, 3, 4) is effected in a spiral form by the line guide (40).
2. An energy feed system according to claim 1 characterised in that the adjusting device (30) has at least one axis guide (31, 32) for at least one of the two winding axes (11, 21) for substantially linear adjustment of the spacing (X) between the two winding axes (11, 21).
3. An energy feed system according to claim 1 or claim 2 characterised in that the winding device (10) has a drive for winding up and/or unwinding the at least one energy-transmitting line (1, 2, 3, 4).
4. An energy feed system according to claim 3 characterised in that the drive moves at least one of the two winding axes (11, 21) along the at least one axis guide (31, 32).
5. An energy feed system according to claim 3 or claim 4 characterised in that the drive has a force storage means.
6. An energy feed system according to claim 5 characterised in that the force storage means has at least one hydraulic cylinder (33) and/or a spring device.
7. An energy feed system according to one of claims 1 to 6 characterised in that the line guide (40) has individual guide elements (41) - preferably individual guide elements (41) in the form of rollers - , on which the at least one energy-transmitting line (1, 2, 3, 4) is disposed.
8. An energy feed system according to one of claims 1 to 7 characterised in that an intermediate space (44) is provided between the at least one energy-transmitting line (1, 2, 3, 4) disposed on an inner spiral path (42) and the at least one energy-transmitting line (1, 2, 3, 4) disposed on an outer spiral path (43), whereby the at least one energy-transmitting line (1, 2, 3, 4) disposed on the inner spiral path (42) is spaced from the at least one energy-transmitting line (1, 2, 3, 4) disposed on the outer spiral path (43).
9. An energy feed system according to one of claims 1 to 8 characterised in that the extension direction and the retraction direction of the at least one energy-transmitting line (1, 2, 3, 4) is effected substantially parallel to the straight line connecting the two winding axes (11, 12).
10. An energy feed system according to one of claims 1 to 9 characterised in that the at least one energy-transmitting line (1, 2, 3, 4) is in the form of an electric line and/or a hydraulic line.
11. An energy feed system according to one of claims 1 to 10 characterised in that two or more energy-transmitting lines (1, 2, 3, 4) can be wound in a spiral configuration around the two winding axes (11, 21).
12. An energy feed system according to claim 11 characterised in that at least one energy-transmitting line (1, 2, 3, 4) is in the form of an electric line and at least one energy-transmitting line (1, 2, 3, 4) is in the form of a hydraulic line.
13. A lifting device, in particular a crane (100), comprising an energy feed system (110) - in particular for a tool which is or can be fixed to the lifting device - according to one of claims 1 to 12.
14. A vehicle comprising an energy feed system (110) - in particular for a tool which is or can be fixed to the vehicle - according to one of claims 1 to 12.
15. A vehicle comprising a lifting device according to claim 13.

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