ES2281045T3 - LIFTING MECHANISM, ESPECIALLY THE PROVISION OF ITS CABLES. - Google Patents

Abstract

Lifting mechanism (9) for a standardized container shuttle device, especially containers (12), with several cable drums (13, 14, 15, 16), with cables (22 A, B, 23 A, B, 24 A, B, 25, A, B) which are wound and unwound by the cable drum, which are attached to a load transom (10), which the lifting mechanism can raise and lower, such that the cables ( 22 A, B; 23 A, B; 24 A, B; 25 A, B) of each individual pair of cables (22, 23, 24, 25) form an angle to each other with respect to the pendulum damper in the direction of the of the lifting mechanism (9) and transversely to it, the lifting mechanism (9) being able to move essentially horizontally, characterized in that the cables (22 A, 23 A, 24 A, 24 B; 22 B, 23 B, 25 A, 25 B) of the lifting mechanism (9) can be wound and unwound independently of each other to actively swing the load cross member (10) around a tr axis ansversal to its direction of travel, because the cables (22 A, B; 23 A, B; 24 A, B; 25 A, B) are divided into pairs of the front side (24, 25) and of the longitudinal side (22, 23) with respect to the sides (10 A, B, C, D) of the load transom, because the corresponding pair of cables (22, 23) of the longitudinal side is attached to the ends of the longitudinal side (10 A, B) of the load transom (10), because the cables (24 A, B; 25 A, B) of a pair of cables (24, 25) have an angle to each other with respect to the balancing damper that closes in the direction of the load transom (10), such that its fixing points are in line with the end fixing points of cable of the pairs of cables (24, 25) of the front sides of the load transom, such that they form a common axis when the load transom (10) swings around an axis transverse to its longitudinal direction.

Description

Lifting mechanism, especially the arrangement of your cables.

The invention relates to a mechanism of lifting for a standardized container shuttle device, especially containers, with several cable drums, with cables which are wound and unwound by the cable drum, which they are attached to a loading crossbar, which the lifting mechanism can raise and lower, so that the wires of each pair individual cables form an angle with respect to each other pendulum damper in the direction of travel of the mechanism of elevation and transversely to the mechanism of lifting, being able to move the lifting mechanism so essentially horizontal.

When transporting a load that hangs from a shuttle apparatus, for example a standardized container such as a container, it must be taken into account that during the movement of the shuttle device, especially when starting and braking, the load oscillates in reciprocating due to the effect of mass forces.

We must avoid a swing of this type of burden as it constitutes a risk to the safety of personnel located on land and due to the irregular effort of the device Ferry can lead to wear, material fatigue and It even collapses.

It is also necessary to configure the device shuttle in such a way that elongated loads can be collected that are not horizontal, that is, that are inclined along of its longitudinal axis. This is the case, for example, when there is to pick up containers from a shuttle truck and the container is not placed horizontally in the truck. This occurs for example when the truck itself is inclined, as would be the case when being located on a ramp or when the combination of tractor unit and trailer do not allow a horizontal placement of the load surface. In these cases it is necessary to lift the load at its ends irregularly to offset the inclined position. This is also necessary Avoid load oscillation.

To prevent or reduce a swing of the load and avoid an inclined position of the loads, they are known different proposals according to the current state of the art.

Thus, document US 3,837,503 discloses a lifting mechanism in which, to prevent the oscillation of a load, the cables of the cable drums form each other in the load pickup direction a convergent angle. Although with this can to a certain extent avoid the oscillation of the load in the direction of travel, no compensation is provided in case of an inclined position of the load.

Document DE 37 09 960, on the other hand, gives to know a device for a crane in which to prevent a load oscillates, the guide wires run so approximately pyramidal from the cable drums to the means of collecting cargo or the hook, that is, in the sense of load collection form a convergent angle to each other. Although with this, an oscillation of the  load in the direction of travel and transversely to it, to compensate for an inclined position of the load is provided in the load collection means a complex adjustable bearing part hydraulically In addition, the device only allows to compensate for a inclined position when hanging outside or during movement  of the load arranged inclined. A direct collection of a load arranged inclined, as mentioned previously, it is not possible, especially by type provided in the proposed "swing control".

Document DE 102 18 260 A1 discloses a lifting cable guide for a container crane, in which rotating cable pulleys are used to compensate for the position inclined cables that varies with height. By means of the inclined position of the lifting cable guide between the carriage and the Spreader, and a modification of the cable lengths elevators, effective damping of the roll can be achieved and a manipulation of the means of collecting loads in six degrees of freedom.

Document DE 2 114 386 A discloses a lifting device for a container, in which to prevent the balancing auxiliary cables are used, which are narrowed in the front side towards the fixing place, which unwind in the corresponding auxiliary cable drums. These unwind or wind up, at the same time as the unwinding of lifting cables of the propeller drums, cable sections of approximately the same length.

Document DE 43 25 946 A1 discloses a damping and positioning device in which for damping the roll are provided, in addition to the elevator cable, cables of guidance that apply a force. The guide wires are controlled in function of geometric conditions such as distance from force generator and lifting height, the behavior in the acceleration of the crane propulsion and the capacity of mechanical load of the car and also taking into account several movement quantities such as swing angle, speed and Rolling acceleration, and strength development.

Document DE 44 25 777 C2 discloses a lifting mechanism with at least two lifting cables that they run together forming an obtuse angle and they are fixed in the loading crossbar The shafts of the cable drums and / or the load fixing places run in the direction of the gear, that is, in the sense of damping, so that the slopes of the cable drum slots are chosen same in both the right-hand thread section and also in the thread section on the left and that, regardless of the height and position of the load, the inclination of the cables Elevators is approximately the same.

US 2,190,093 discloses a lifting system for a camera and stage lighting  in which the lifting cables are attached to the load crossbar by elastic elements.

The object of the invention is, by consequently, prepare a lifting mechanism for an apparatus shuttle that allows a damping of the roll in the direction of travel of the lifting mechanism and shape transverse to it and also make elevation possible Selective of inclined placed loads, especially loads elongated such as containers.

This objective is achieved by the invention. reproduced in claim 1.

Making the mechanism wires of lifting can be rolled up and unwound independently between  yes to actively tilt the load beam around from a transverse axis to its direction of travel, it is possible that, maintaining the damping characteristics of the roll, you can also collect standardized containers ready to inclined way in the direction of travel and that they can also be placed on supports with a corresponding inclination. This is achieved by the special geometry of the arrangement of the Cable and cable drums. In this way, the crossbar of load can be actively tilted around its axis transverse to pick up inclined loads or deposit these inclined. The movement with few load oscillations allow collection and placement of the precise loading.

This can compensate for angles of tilting up to 20 degrees with respect to the horizontal, preferably up to 12 and especially preferably up to 8.

The cables are also divided into pairs of front side and longitudinal side with respect to the sides of the loading crossbar

There are also provided in the load transom four pairs of cables, that is, a total of eight cables to lift and descend. On each side of the load beam there is a pair of wires, forming the wires of the corresponding pair an obtuse or acute angle with respect to the loading crossbar

The corresponding pair of cables on the side longitudinal is attached to the ends of the longitudinal side of the load transom and, with it, also to the ends of the side frontal.

For each front side of the load beam there is provided a pair of cables, which presents an angle that narrow in the direction of the load transom. It is advantageous in this regard, the couple's cables are fixed approximately in the center of the front side of the load beam. Is achieved with it a good damping of the rolling in parallel direction to the front side, and thereby transverse to the direction longitudinal, of the normalized container.

Preferably, the pair of wires on the side front can be attached to the load crossbar approximately in the center of it.

It is also preferably provided on each side. a pair of cables that forms an angle of the load crossbar sharp or obtuse in the direction of the load transom. Result also advantageous if the couple's cables are fixed approximately at the ends of the longitudinal side of the crossbar loading This achieves a good balance damping in the direction parallel to the longitudinal side and, with it, in the longitudinal direction of the standardized container.

Advantageously the wires of a couple are unwind from different double cable drums. Regarding this is advisable that the cable of a couple of the corresponding double cable drum slot present Cable unwinding devices in the same direction. This allows a simple construction of the cable geometry according to the invention.

For each longitudinal side of the crossbar of load, a pair of cables preferably presents in the corresponding cable drum a cable slip point down and correspondingly for each longitudinal side of the load transom, a pair of cables has a point of cable slip up.

To reverse down the wires that run up the cable pairs, that is, the cables of the cable pairs of the front sides of the load transom, pulleys are conveniently provided cables. For each cable to be inverted from a pair of cables There may be two cable pulleys. It makes sense if your axes of rotation are perpendicular to each other. With this you can be achieved that, despite the provision indicated below of the cable drums, the deviation of the cable entry in the cable drums are less than 4 degrees despite the angle shape.

It also makes sense if one of the cables of a double cable drum runs upward from the corresponding slot and the other cable down from the corresponding slot.

It is also possible that the axes of rotation of the double cable drums of a gear lift mechanism are arranged aligned with each other. To do this, also the axes of Twist the double cable drums of the mechanism gear lifting can be arranged parallel to each other and eventually on a common plane. It turns out that way Especially simple a compact arrangement of the assembly.

The lifting mechanism may comprise especially two lifting mechanism gears arranged symmetrical, each of which features two cable drums symmetrical double arranged for the collection or assignment of two cables.

Although control separately from the propulsions of cable drums, for example, of their lifting mechanism gears, can be performed by means of an electronic control, can occur, because of the geometry, deviations in the unwound cable lengths of the cables which hold the different sides of the load crossbar and, with this, possibly the cable housing. To compensate for small deviations of the cable of this type it is advisable that a part of the cables are attached to the load crossbar through limited elastic elements in the longitudinal direction of the cable. For this, the elastic elements can have springs of plate. These may be arranged, for example, in the fasteners, eventually configured as bolts of clamping, of the ends of the cables in the load transom. The fasteners for the remaining cables have then rigid mounting elements instead of springs of plate.

The loading cross member advantageously presents fixing points for a means of collecting loads, especially a spreader.

Other features, details and advantages of the Invention are inferred from the following description of the drawing. Be sample:

Figure 1, a view of a section of a bridge of containers with a lifting mechanism according to the invention;

Figure 2, the lifting mechanism of Figure 1 in a schematic side view and with load crossbar tilted;

Figure 3, the lifting mechanism of Figure 1 in a perspective view tilted from above and without frame support;

Figure 4, the lifting mechanism of Figure 1 in a side view;

Figure 5, the lifting mechanism of Figure 1 in another side view and

Figure 6, fixing the cables in the cargo crossbar in detail.

Figure 1 shows a view of a container crane-bridge designated in its entirety as 1. It usually presents a main support 4 that runs essentially horizontally, along which a carriage 5 can be moved on rails 6. In the carriage 5 there is arranged an upper frame 7, the so-called upper frame of the carriage, which is rotatably connected around a vertical axis with a lower frame 8, the so-called carriage rotation frame. A lifting mechanism 9 configured according to the invention is provided in the rotation frame 8 of the carriage. A ladder 2 with a cab 3 also hangs on the carriage-turning frame 8. On the lifting mechanism 9 hangs a loading cross member 10, in which a Spreader 11 is provided to collect the container.
swimmer

By means of the configuration according to the invention and as deduced from Figure 2, the load transom 10 of the lifting mechanism 9 can be tilted selectively around an axis transverse to the longitudinal direction of the load transom 10 to be able to collect or deposit inclined the elongated loads that are inclined, such as a container 12. After fixing container 12 to Spreader 11, by selective control of the cable drums or their propulsions the cables are wound in such a way that, to transport the container 12, the loading cross member 10 is oriented horizontally. This avoids balancing both in the direction of travel as transversely to it or the balance damping since the cables, especially the cable pairs, form angles to each other.

The structure of the lifting mechanism 9 is will describe based on Figures 3, 4 and 5. For reasons of simplification, in Figure 3 only the mechanism of lift 9 and not the carriage swing frame 8.

The lifting mechanism 9 comprises four cable drums, of which every two 13, 14 and 15, 16 present rotation shafts aligned with each other and are propelled by a gear 17 or 18 common and central, located between cable drums 13, 14 or 15, 16, and the 19 or 20 engine attached to it and located outside with relation to double cable drums 13, 14, 15, 16. Couples of double cable drums 13, 14 and 15, 16 are located in opposite positions, so they have parallel axes of rotation located in a preferably horizontal plane. The corresponding propulsions can be controlled separately, although they can be coupled to each other by an electronic control no represented, to allow on the one hand the selective control of each  side of the lifting mechanism to swing the load beam 10 and, on the other hand, a horizontal rise or fall of the loading crossbar 10. Each of the double cable drums 13, 14, 15, 16 has an inner groove for the cable and a groove located laterally at a certain distance.

Propulsions and cable drums are fixed on a support frame 21 which also carries pulleys of cables, which will be described later, to reverse the cables. For reasons of simplicity, Figure 3 dispenses with the representation of the support frame 21, although it is represented in Figures 4 and 5.

Double cable drums 13 and 14 as well as 15 and 16 of the pairs of double cable drums present the same turning sense. However, the turning directions of the couples of double cable drums 13, 14 and 15, 16 are opposite between yes.

From the double cable drums 13, 14, 15, 16 cable pairs 22, 23, 24, 25 run towards the crossbar of load 10, with which they are connected by cable fasteners 26. On each side of the load transom 10, rectangular in one view On the ground floor, there is a pair of cables.

The pairs of cables 22 and 23 are connected with the longitudinal sides 10 A, 10 B of the load transom 10 and exclude an angle that narrows or widens in the direction of the load transom 10. The corresponding cables 22 A, B and 23 A, B of the cable pairs run straight down from the corresponding inner groove 14 A, 16 A or 13 A, 15 A towards the loading cross member 10, the cable drums 13, 14, 15 being, 16 arranged in such a way on the support frame 21 that its distance in the longitudinal direction of the load transom 10 is less than that of the load beam 10 itself, so that at fix the ends of the wires at the ends of the corresponding longitudinal side of the load crossbar results a angle that opens, whose dimension depends naturally on the lifting height of the load transom 10. Since the cables run from the inner grooves, each of the which is designated with the additional "A" and whose provision equals approximately the width of the load transom 10, the cables run approximately in a plane with the side longitudinal of the load transom towards it.

The pairs of cables 24 and 25, on the contrary, are joined approximately in the center of the corresponding front sides 10 C, 10 D of the load transom 10 and form a angle that opens or closes in the direction of the load transom 10. The corresponding sides 24 A, B and 25 A, B of the pairs of cables run for this from the corresponding outer groove 14 B, 16 B or 13 B, 15 B first up. To divert to down the cables to the front side of the load beam 10 C, 10 D, two reversing pulleys 27 A, B are provided for each cable; 28 A, b; 29 A, B; 30 A, B whose axes of rotation are arranged approximately vertical way with each other and run horizontally.

The upper cable pulleys 27 A, 28 A, 29 A and 30 A are arranged above the cable drums and in the longitudinal direction of the load transom 10 moved towards its front sides 10 C, 10 D. The lower cable pulleys 27 B, 28 B, 29 B and 30 B are at approximately the same height that the cable drums and approximately in a vertical plane with the front sides 10 C, D. By double deviation of the cables 24 A, B and 25 A, B form, on the one hand, an angle that It narrows. On the other hand it is possible with this that despite the indicated arrangement of cable drums, deviation from the cable entry in the slots is less than 4 degrees despite The angle formed. Also the cables run like this approximately in a plane with the corresponding side of the load transom towards East.

It is also achieved, as will be indicated more forward, that the angles of the pairs of cables 24 and 25 of the front sides of the load crossbar approximately equal always at the angles of the pairs of wires 22 and 23 on the sides length of the load transom, that is, the deviations of the angles when raising or descending are relatively equal to each other so that they are also approximately equal the lengths of unwound cable or rolled with the load transom 10 oriented so horizontal. The load to be lifted is distributed like this evenly over the cable.

The cable ends of the cable pairs 22, 23 are fixed to the ends of the longitudinal sides 10 A, B of the load transom so that its attachment points they are in the same line with the fixing points of the cable ends of cable pairs 24, 25 on the sides front of the load transom, that is aligned, in such a way which form a common axis when the load beam 10 is tilted around an axis transverse to its longitudinal direction. The axis of tilt of the load transom 10 and the common axis formed by the fixing points are approximately parallel.

The cable ends of the cable pairs 22, 23 are attached to the ends of the longitudinal sides of the loading crossbar through angled joint cover 31. The joint cover 31 is in turn fixed to cross beams 32 tubular of the load transom 10. On these transverse beams 32, which extend parallel along the front sides 10 C, D of the load transom 10, other covers 41 are provided for fixing approximately centrally the cable ends of the pairs of cables 24, 25. In these covers 41 are provided also the fixing points for the Spreader 11.

Despite the structure described, especially the arrangement of cable drums, reversing pulleys and cables, in the case of large cable lengths it is produced that the sliding points from cable cable drums of the cable pairs 22, 23 move in motion antagonist to those of the wires of the cable pairs 24, 25, what which causes small differences in angles and so on cable lengths on the front sides 10 C, D in comparison with the angles of the side wires Longitudinal 10 A, B. This aspect will be discussed later.

To compensate for the minimum deviations of this type of cable lengths, cables 24 A, 24B; 25 A and 25 B are attached to crossbar 10 through fasteners 26 elastic in the longitudinal direction of the cable (see Figure 6). The elastic fasteners 26 have plate springs 33 for this purpose. They are arranged inside the fixings. The fixings 26 for the remaining cables 22 A, 22 B, 23 A and 23 B do not have these plate springs 33 and therefore behave so rigid

The corresponding cables enter the fixings 26 and there they are attached, through a claw 34 of union of cable, with a bolt 35 that runs approximately horizontally. Bolts 35 transmit the load through side pieces 36 to the cross beams 37, which together form a clamp U-shaped. On these cross beams 37 there are fixed chains 38 you cut through a bolt 39 that moves in the direction length of the fixing 26, that is in the direction of the cable, and which penetrates the cross beams 37. Bolt 39 has a nut 40 that encloses plate springs 33 between it and the beam transverse 37. In this way the fixings 26 can make also modifications of the cable angle and at the same time produce a small length compensation across the plate springs 33. For rigid cable fasteners 26 22 A, 22 B, 23 A and 23 B replace plate springs 33 with Rigid hollow cylinders not shown.

They will now be described by way of example cable length differences obtained for different heights of elevation and the angles formed.

In the raised position the angle between the cables 22 B and 25 A and the angle between cables 25 A and 25 B is approximately 32.5 degrees ± 0.5 degrees with the crossbar of 10 load oriented horizontally. The difference of the cable length 22 B between the sliding point in the drum of cable 16 B and the fixing point on the load transom 10 and that of the 25 B cable between the slip point on the pulley inversion 29 B and the fixation point on the load transom 10 is approximately 2 mm, which are compensated by the fixings elastic 26. In the position lowered to the middle of the crossbar of load 10, the angle between the cables 22 B and 25 A and the angle between the cables 25 A and 25 B with the load transom 10 oriented Horizontal is about 10 degrees ± 0.5 degrees. The difference in cable length 22 B between the point of sliding on the cable drum 16 B and the fixing point on the load transom 10 and the length of the cable 25 B between the slip point on the reversing pulley 29 B and the point of fixation on the load transom 10 is approximately 3 mm, which are compensated by elastic fasteners 26.

In the lowered position of the load beam 10, the angle between the cables 22 B and 25 A and the angle between the 25 A and 25 B cables with the load transom 10 oriented so Horizontal is about 6 degrees ± 0.5 degrees. The difference in cable length 22 B between the point of sliding on the cable drum 16 B and the fixing point on the load transom 10 and cable length 25 B between the point  slip on the reversing pulley 29 B and the point of fixation on the load transom 10 is approximately 8 mm, which are compensated by elastic fasteners 26.

References

one

crane

2

ladder

3

cabin

4

guide cabin

5

car

6

rails

7

upper carriage frame

8

carriage swing frame

9

cable drum

10

load transom

eleven

Spreader

12

container

13

double cable drum

13A, B

cable slot

14

double cable drum

14A, B

cable slot

fifteen

double cable drum

15A, B

cable slot

16

double cable drum

16A, B

cable slot

17

gear

18

gear

19

engine

twenty

engine

twenty-one

support frame

22

pair of wires

2. 3

pair of wires

24

pair of wires

25

pair of wires

26

cable fixings

27

investment pulley

28

investment pulley

29

investment pulley

30

investment pulley

31

joint cover

32

cross beam

33

plate spring

3. 4

cable tie claw

35

cap screw

36

side piece

37

cross beam

38

chain

39

cap screw

40

nut

41

joint cover

Claims (20)

1. Lifting mechanism (9) for a standardized container shuttle, especially containers (12), with several cable drums (13, 14, 15, 16), with cables (22 A, B, 23 A, B , 24 A, B, 25, A, B) which are wound and unwound by the cable drum, which are connected to a load cross member (10), which the lifting mechanism can raise and lower, so that the cables (22 A, B; 23 A, B; 24 A, B; 25 A, B) of each individual pair of cables (22, 23, 24, 25) form an angle to each other with respect to the pendulum damper in the direction of the movement of the lifting mechanism (9) and transversely to it, the lifting mechanism (9) being able to move essentially horizontally, characterized in that the cables (22 A, 23 A, 24 A, 24 B; 22 B , 23 B, 25 A, 25 B) of the lifting mechanism (9) can be wound and unwound independently of each other to actively swing the load cross member (10) around an axis transverse to its direction of travel, because the cables (22 A, B; 23 A, B; 24 A, B; 25 A, B) are divided into pairs of the front side (24, 25) and of the longitudinal side (22, 23) with respect to the sides (10 A, B, C, D) of the load transom, because the corresponding pair of cables (22, 23) of the longitudinal side is attached to the ends of the longitudinal side (10 A, B) of the load transom (10), because the cables (24 A, B; 25 A, B) of a pair of cables (24, 25) have an angle to each other with respect to the balancing damper that closes in the direction of the load transom (10), such that its fixing points are in line with the end fixing points of cable of the pairs of cables (24, 25) of the front sides of the load transom, such that they form a common axis when the load transom (10) swings around an axis transverse to its longitudinal direction. 2. Lifting mechanism according to claim 1, characterized in that the corresponding pair of cables (24, 25) on the front side is connected to it in the center of the front side (10 C, D) of the load transom (10). 3. Lifting mechanism according to claim 2, characterized in that the cables (22 A, B; 23 A, B) of a pair of cables (22, 23) have an angle to each other with respect to the damping of the extended roll in the direction of the load transom (10). 4. Lifting mechanism according to one of the preceding claims, characterized in that the cables (22 A, B; 23 A, B; 24 A, B; 25 A, B) of a pair of cables (22, 23, 24, 25 ) run from different cable drums (13, 14, 15, 16). 5. Lifting mechanism according to claim 4, characterized in that the cables (22 A, B; 23 A, B; 24 A, B; 25 A, B) of a pair of cables (22, 23, 24, 25) of the corresponding slots (14 A, 16 A; 13 A, 15 A; 14 B, 16 B; 13 B, 15 B) of the corresponding double cable drums (13, 14, 15, 16) have cable assemblies thereof sense. 6. Lifting mechanism according to claim 4 or 5, characterized in that for each longitudinal side (10 A, B) of the load cross member a pair of cables (22, 23) has a cable sliding point downwards. 7. Lifting mechanism according to claim 4 or 5, characterized in that for each longitudinal side (10 C, D) of the load cross member a pair of cables (24, 25) has a cable sliding point upwards. 8. Lifting mechanism according to one of the preceding claims, characterized in that the pair of cables (24, 25) of the front side of the front side (10 C, D) of the load cross member has an angle that closes in the direction of the crossbar loading (10). 9. Lifting mechanism according to one of the preceding claims, characterized in that the pair of cables (22, 23) of the longitudinal side of the longitudinal side (10 A, B) of the loading cross member has an angle that opens in the direction of the crossbar loading (10). 10. Lifting mechanism according to one of claims 7 to 9, characterized in that cable pulleys (27, 28, 29, 30) are provided to reverse the cables (24 A, B, 25 A, B) on the front side down of the corresponding pair of cables (24, 25) above. 11. Lifting mechanism according to claim 10, characterized in that at least two cable pulleys are provided for each cable (24 A; 24 B; 25 A; 25 B) of the pair of cables (24, 25) on the front side. 27 A, B; 28 A, B; 29 A, B; 30 A, B). 12. Lifting mechanism according to claim 11, characterized in that the axes of rotation (27 A, B; 28 A, B; 29 A, B; 30 A, B) of the cable pulleys are arranged approximately perpendicularly to each other. . 13. Lifting mechanism according to one of the preceding claims 9 to 12, characterized in that one of the cables (22 A, 24 A; 23 A, 24 B; 22 B, 25 A; 23 B, 25 B) of a drum double cable (13; 14; 15; 16) runs from the corresponding slot (13 A, B; 14 A, B; 15 A, B; 16 A, B) upwards and the other cable (22 A, 24 A; 23 A, 24 B; 22 B, 25 A; 23 B, 25 B) from the corresponding slot (13 A, B; 14 A, B; 15 A, B; 16 A, B) to
down. 14. Lifting mechanism according to one of the preceding claims 9 to 13, characterized in that the rotation axes of the cable drums (13, 14; 15, 16) of a lifting mechanism gear (17; 18) are arranged between Yes in an aligned manner. 15. Lifting mechanism according to one of the preceding claims 9 to 14, characterized in that the rotation axes of the double cable drums (13, 14; 15, 16) of the lifting mechanism gears (17, 18) are arranged parallel to each other. 16. Lifting mechanism according to claim 15, characterized in that the rotation axes of the double cable drums (13, 14; 15, 16) of the lifting mechanism gears (17, 18) are arranged in a common plane. 17. Lifting mechanism according to one of the preceding claims, characterized in that the cables on the front side (24 A, B; 25 A, B) are connected to the load transom (10) through elastic elements (26) in the direction cable length 18. Lifting mechanism according to claim 17, characterized in that the elastic elements (26) have plate springs (33). 19. Lifting mechanism according to one of the preceding claims, characterized in that the load transom (10) has fixing points (41) for a means for collecting loads, especially a Spreader (11). 20. Lifting mechanism according to one of the preceding claims, characterized in that the propulsions (17, 19; 18, 20) of the cable drums are coupled by an electronic control.