WO2017063952A1

WO2017063952A1 - Gantry lifting device for iso containers

Info

Publication number: WO2017063952A1
Application number: PCT/EP2016/074061
Authority: WO
Inventors: Mike Hegewald; Jannis Moutsokapas; Peter Köhn; Lars Michael THEISSEN
Original assignee: Terex Mhps Gmbh
Priority date: 2015-10-13
Filing date: 2016-10-07
Publication date: 2017-04-20
Also published as: CN107406239B; CN107406239A; EP3212560B1; DE102015117417A1; EP3212560A1

Abstract

The invention relates to a gantry lifting device (1) for ISO containers (2), in particular in the manner of a straddle carrier, comprising four gantry supports (6d) which are spaced apart from one another, extend parallel to one another in the vertical direction, and are connected to one another at the upper ends of the gantry supports by means of an upper frame (8), and comprising a machine platform (11) arranged between the gantry supports (6d), wherein the machine platform (11) is mounted such that the machine platform can be raised and lowered. In order to provide an improved gantry lifting device (1), according to the invention the machine platform (11) can be moved in the vertical direction between the gantry supports (6d) and below the upper frame (8) relative to the upper frame (8).

Description

Portal lifting device for ISO containers

The invention relates to a gantry lifting device for ISO containers, in particular in the manner of a straddle carrier, the four spaced apart and parallel to each other in the vertical direction extending portal supports, which are interconnected at their upper ends via an upper frame, and arranged between the portal supports Machine platform, wherein the machine platform is mounted raised and lowered. Typical applications of portal lifting devices for the purposes of the present invention are the handling and transport of containers, in particular standardized ISO containers, within container terminals in seaports or inland ports or in container terminals for combined traffic between road and rail. In this context, ISO containers are understood as standardized large-capacity or sea freight containers that are used in the international market

Goods traffic are used. The most widely used are ISO containers with a width of 8 feet and a length of 20, 40 or 45 feet. Portal lifting devices are therefore special heavy duty vehicles, which are also called

Straddle Carriers, Portal Stacks, Gantry Trucks, Gantry Stackers, Straddle Carriers, Van Carriers, Shuttle Carriers or Runners are known.

Usually, gantry lifting devices comprise a spider-leg-like superstructure with a lifting device, via which a load-receiving means designated as a spreader or spreader frame can be raised and lowered in order to receive containers, lift them and then be able to park them again after being transported to a destination. Due to the spider-leg-like structure, which has four rigid portal supports arranged in the corners of an imaginary rectangle, portal lifting devices can drive over a container resting on the floor or on another container and additionally transport a raised container depending on the design. Depending on the height, the gantry lifting devices are referred to, for example, as 1 over 3 devices, 1 over 2 devices, and so on. A 1 over 3 unit can run over three stacked containers with a container in it and is about 15 m high. At its upper end, the gantries are usually through a top frame connected to each other, which is supported by the portal supports and on which a machine platform is arranged. On the machine platform are the one or more winches comprehensive lifting device and a drive unit

arranged. Since the drive of the gantry lifting devices is usually formed diesel-electric, diesel-hydraulic or fully electric, which includes on the

Machine platform arranged drive unit depending on the used

Drive technology components such as a diesel engine and

Generator, batteries and / or hydraulic units. In the area of the upper frame can also have a driver's cab with a

Control station be arranged for a traveling operator. The gantry lifting devices can accordingly manually over the in the driver's cab

Operator, semi-automatic or in so-called Automated Guided Vehicles (AGV) fully automatic and thus driverless operated. "Driverless" refers only to the actual intervention of a driver in the

Control process. In this sense, a driverless automatic operation of a corresponding gantry lifting device can also be given if a driver mitfährt, but this does not actively interfere with the control. In addition, the gantry lifting devices are provided with wheels with rubber tires filled with air or gases in the sense of tires and hereby tied to the rail, but not rail-bound and thus freely movable. Accordingly, the presently affected gantry lifting devices are to be distinguished from rail vehicles. Portal lifting devices of the type described above are already from the German

Laid-open publication DE 10 201 1 001 847 A1 and from the German

Utility Model DE 20 2004 018 066 U1.

From the German patent application DE 24 60 519 A1 a portal lifting device is known, the driver's cab is movable via a pivot arm between an upper position in the region of the upper frame and a lower position in the region of the wheels of the portal lifting device.

Portal lifting devices are also known which do not have rigid portal supports in order to support a top frame at a constant height. The German patent application DE Instead, 197 14 210 A1 discloses a portal device designed as a 1-over-4 device, the upper frame of which, together with the driver's cab and the spreader frame, can be raised and lowered via a lever mechanism in the form of a scissor lift system. From the international patent application WO 2007/010358 A1, a portal lifting device designed as a 1-over 0 device is known, the lifting device of which is formed by a lever mechanism which is part of height-adjustable side running gears and can be raised and lowered by their height adjustment of the spreader frame and the driver's cab. From US 3,570,695 A and WO 2015/155189 A1, a portal lifting device in the sense of the preamble of claim 1 is known in each case. The lifting and lowering of the machine platform arranged in the region of the upper frame takes place here together with the upper frame by telescoping the portal supports. The invention has for its object to provide a portal lifting device that can be operated more economically and safely.

This object is achieved by a portal lifting device with the features of claim 1. In the claims 2 to 13 advantageous embodiments of the invention are given.

A portal lifting device, in particular in the manner of a straddle carrier, the four spaced apart and parallel to each other in the vertical direction extending portal supports, which at their upper ends via a

Upper frame are connected to each other, and having a arranged between the portal supports machine platform, the machine platform is mounted raised and lowered, can thereby operate more economical and safer, that the machine platform between the portal supports and below the upper frame relative to the upper frame movable in the vertical direction is. The supporting structure formed thereby allows flexible operation for different lifting heights, to which the position of the machine platform is adaptable if necessary. As a result, the overall center of gravity of the gantry lifting device can be changed in relation to its height, in particular as far as possible to lower and, if required, to lift the required lifting height accordingly. This allows operation of the portal lifting device with better, in particular more stable, dynamic and kinematic properties. In particular, the portal lifting device at

lowered machine platform and correspondingly lower overall center of gravity due to the resulting stability increase especially in the driving position described below are moved at a higher speed than at a comparatively higher position of the machine platform and correspondingly higher overall center of gravity. The comparatively unstable and therefore only slower operation of the portal lifting device with raised machine platform can thus on the recording or discontinuation of containers of

or limited to container stacks. The overall achievable higher handling capacity allows more economical operation of the gantry lifting device over conventional gantry lifting equipment whose

Machine platform is fixed to the upper frame. As a result, gantry lifting devices can be operated with larger heights as conventional gantry lifting equipment with lower height and fixedly mounted on the upper frame machine platform and correspondingly unfavorable center of gravity. Even a more stable and thus safer operation than with corresponding conventional gantry lifting equipment with lower heights is possible. In addition, the stationary

Machine platform in conventional gantry lifting equipment a necessary

Component of the steel structure and in particular of the upper frame is.

In contrast, the machine platform according to the present invention is separated from the upper frame and serves only as a platform for the components mounted thereon.

Advantageously, it is provided that the machine platform is movable between an upper end position and a lower end position and is held in the lower end position positively to the portal supports and in this case preferably rests on the portal supports arranged support elements. As a result, the machine platform, in particular in the driving position and at low lifting heights, can be locked to the portal supports in a structurally simple and secure manner.

In a structurally simple manner, it is provided that a drive unit of the portal lifting device is arranged on the machine platform and, preferably, additional control cabinets, braking resistors and / or further drive components of the portal lifting device are arranged on the machine platform. The weight of the components mentioned has a high proportion of Total weight so that their displacement together with the machine platform further increases the previously explained advantageous effect of a shift of the center of gravity. In a structurally simple way it is provided that the portal lifting a

Lifting device and has a lift device underneath the machine platform raised and lowered load receiving means for ISO containers, and in addition has a lifting device independent of the lifting drive, via which the machine platform can be raised and lowered via the lifting device. Such a separate lifting drive allows a particularly flexible adjustment of

Overall center of gravity.

In a structurally simple manner is alternatively provided that the gantry lifting device has a lifting device and a lifting device below the lifting platform underneath the machine platform and lowerable lifting device for ISO containers and the

Machine platform via the lifting device can be raised and lowered. This allows for a separate lifting drive as an additional hoist for lifting

or lowering the machine platform are omitted. Advantageously, it is provided that the lifting device so with the

Machine platform is coupled to the machine platform by means of

Lifting device from the lower end position in each position above the lower end position can be raised and lowered and the machine platform hereby supported on the load-carrying means and thereby can be raised and lowered together with the load-receiving means.

Advantageously, it is provided that the lifting device so with the

Machine platform is coupled, that the load-receiving means can be raised and lowered independently of the machine platform, when the machine platform is held in the lower end position form-fitting manner on the portal supports. As a result, the machine platform can remain at low lift heights on the support elements, whereby the lifting device relieved and the safety is further increased. The coupling of the lifting device and the machine platform thus also includes a decoupling in the sense of a release of the lifting device of the

Machine platform, especially if the machine platform in the lower End position is lowered while the load handling device arranged underneath is moved in the vertical direction.

In a structurally simple manner, it is provided that at least one spacer, preferably in the form of a rod attached to the load-receiving means, is arranged between the machine platform and the load-receiving means. As a result, the load receiving means can be raised and lowered safely even when the machine platform above the lower end position on the

Lifting device supported.

In a structurally simple way it is provided that the lifting device as

Cable pulling device is formed and preferably comprises four wound on cable drums and unwindable ropes, each between its attached to one of the cable drums first end and its attached to the upper frame via a rope fixed point second end via a on the load receiving means

arranged deflection roller are guided. Corresponding cable pull devices have long been proven for use as a lifting device of portal lifting devices and allow safe operation of the purpose of the invention. In a structurally simple way it is provided that the cable drums on the

Machine platform or arranged on a arranged at the lower end of the portal supports chassis support of the portal lifting device. Cable drums arranged on the machine platform allow a simple construction of the pulley-type cable pulling device as described below. Cable drums arranged on the chassis carriers advantageously lead to a further lowering of the overall center of gravity of the portal lifting device. In addition, by the structure described below, a permanently effective Einscherung be easily realized and the lifting device are relieved accordingly. Advantageously, it is also provided that the gantry lifting device has a driver's cab, which is mounted raised and lowered. This allows the

Overall focus further lowered. In addition, results for the

Operator a more comfortable position and especially in the driving position a better overview, which simplifies manual navigation and safety is further increased. In a structurally simple way, it is provided that the driver's cab is firmly connected to the machine platform and is jointly hereby raised and lowered. This can be dispensed with its own linear actuator for the driver's cab.

Advantageously, it is provided that the portal lifting device is designed as 1 About 4 device. Such a portal lifting device allows for a constant storage area of a container, which can be operated only with 1 via 3 devices, through the additional fifth container level, an increase in storage capacity by 25%. Due to the raised and lowered machine platform, the

The overall center of gravity of the 1-over-4 device, at least in the driving position, can be set to the same or a lower height in comparison to a conventional 1-over-3 device with fixed machine platform. The invention will be explained in more detail with reference to the following description. Show it:

FIG. 1 shows a view of a portal lifting device in a first embodiment in a driving position,

FIG. 2 shows a view of the portal lifting device from FIG. 1 in a lifting position,

Figure 3 is a view of a portal lifting device in a second embodiment in a driving position and

FIG. 4 shows a view of the portal lifting device from FIG. 3 in a lifting position. FIG. 1 shows a view of a portal lifting device 1 in a first

Embodiment in a driving position. The portal lifting device 1 is a

Heavy-duty vehicle with a lifting device designed as a gantry lifting device for lifting and lowering a container, in particular an ISO container 2. The gantry lifting device 1 is freely movable on a corridor surface 4 via a total of eight rubber-tired wheels 3. In principle, it is also possible to provide more or less than eight corresponding manner provided with tires wheels 3, if this is technically necessary or possible. The wheels 3 of the portal lifting device 1 are fastened to two chassis carriers 5 which are each aligned with their longitudinal extent in the direction of travel F of the portal lifting device 1. The two chassis supports 5 each comprise four of the wheels 3, which in the direction of travel F Seen arranged at a distance one behind the other. The chassis support 5 also have electric traction drives and electric steering motors for the wheels 3, which are fed by a drive unit 5a of the portal lifting device. Depending on the drive technology used (diesel-electric, diesel-hydraulic or

fully electric), the drive unit 5a comprises components such as a diesel engine and generator, batteries and / or hydraulic power units. Due to the existing single-wheel steering, various steering programs, such as an optimized one, can be controlled via an appropriate control system

Standard curve, circle, a turn around its own vertical axis or a crab can be realized. The Portalhubgerät 1 shown as an example can be operated manually and has a corresponding manner for a ride

Operator a cab 1 a on. Alternatively, however, as described above, the portal lifting device can also be configured fully automatically as AGV or semi-automatically operable.

The two chassis supports 5 arranged parallel to one another and at a distance from each other are connected to one another via a front first portal frame 6a and via a rear second portal frame 6b. Accordingly, the two U-shaped portal frame 6a, 6b seen in the direction of travel F are arranged spaced from each other. Each of the two portal frames 6a, 6b comprises an upper horizontal and transverse to the direction of travel F aligned gantry carrier 6c, at the lateral ends of each a vertically and straight to the floor surface 4 extending portal support 6d connects. As a result of this structure, the rigidly formed portal supports 6d, viewed in plan view, are arranged in the corners of an imaginary quadrilateral, preferably a rectangle. The two portal frames 6a, 6b are supported on the four portal supports 6d

Chassis supports 5 from, resulting in a spider-leg like structure. The two gantry supports 6d of each gantry frame 6a, 6b and, accordingly, the two girder girders 5 are at least the width of an ISO container 2 spaced from each other. In addition, the two portal frame 6a, 6b are connected to each other via two spaced apart and aligned in the direction of travel F side member 7. The two gantry beams 6c and the side members 7 form one

rectangular upper frame 8, which is supported by the four gantries 6d and arranged at their upper ends. In each corner of the upper frame 8 attacks one of the portal supports 6d. Overall, the portal lifting device 1 exemplified in FIG. 1 is as

so-called 1 formed via 4-device, via the one of the floor surface. 4

recorded ISO container 2 can be deposited not only on the floor surface 4, but also on a stack of four ISO containers 2 or taken thereof (see Figures 2 and 4). The portal lifting device 1 accordingly has a height of about 18 m with respect to the ground surface 4. The attributable thereto

Altitude of the chassis beams 5, the portal supports 6 d and the

Upper frame 8 formed support structure of the portal lifting device 1 is constant due to the above-described construction. Due to the given dimensions net-like bracing 12 are provided to increase the stability of the portal lifting device 1 and its supporting structure. Here is between each

Chassis support 5 and the associated side member 7 a brace 12 is arranged, the rod-shaped struts the portal support 6d of the front first portal frame 6a with the portal support 6d of the rear second portal frame 6b of the corresponding landing gear side connects.

The lifting device of the portal lifting device 1 is like a hoist and in the present embodiment as four ropes 9d (shown in phantom)

having cable pull device 9 is formed. The ropes 9d are formed as steel cables. About the preferably electric motor driven lifting device is a lifting device for receiving and handling the ISO container 2 in a substantially vertical stroke direction H can be raised and lowered. For this purpose, the cable pulling device 9 is connected via its four cables 9d to the load receiving means by each cable 9d is guided over a mounted on the load receiving means guide roller 9a, so that per guide roller 9a run two cable strands in the direction of the upper frame 8. In order to be able to raise or lower the load receiving means, the ropes 9d can be wound in pairs on a common cable reel 9b serving as a cable winch or thereof

unwound. Accordingly, each cable 9d is fastened with a first end to the associated cable drum 9b and fastened to the upper frame 8 with a second end, forming a cable anchor point S. The rope fixed points S are arranged on an inner side of the upper frame 8 and therefore not visible in FIG. Also, a separate cable drum 9b can be provided for each cable 9d. The cable drums 9b are drivable via the drive unit 5a. The drive of the cable drums via an appropriate control of the lifting device so that the four guide rollers 9a are raised or lowered evenly and thus remain permanently in a substantially horizontal plane. Since each cable 9d is guided over a pulley 9a fixed to the load-receiving means in the sense of a loose pulley, each rope 9d is simply cut in, forming a type of pulley and the load acting on each rope 9d is divided between the two rope cords of the corresponding rope 9d. A multiple reeving with a correspondingly larger number of pulleys is conceivable.

The load handling device essentially comprises a so-called

Spreader frame 10, which may be designed in particular as a so-called single-lift or twin-lift spreader. In the twin-lift variant, two ISO containers 2 arranged directly one behind the other and each 20 feet long can be accommodated in the direction of travel F of the portal lifting device 1. To accommodate an ISO container 2, so-called twistlocks of the spreader frame 10 engage

corresponding upper corner fittings of the ISO container 2, by the subsequent locking of the ISO container 2 is attached to the spreader frame 10. In the usual way, the load-carrying means below the upper frame 8 and between the portal supports 6 d of the front first portal frame 6 a and the

Portal supports 6 d of the rear second portal frame 6 b in the stroke direction H up and down movable.

The spreader frame 10 extends with its longitudinal member 10a in the direction of travel F between the portal supports 6d. In addition, the spreader frame 10 comprises two cross members 10b, each extending between the portal supports 6d of the two portal frames 6a and 6b and thus transverse to the direction of travel F. The

Cross member 10b serve as a guide of the spreader frame 10 between the

Portal supports 6d. In addition, two of the deflecting rollers 9a are attached to each of the two cross beams 10b in order to fasten and suspend the spreader frame 10 therefrom on the cables 9d of the cable pulling device 9.

In the driving position shown in Figure 1, the spreader frame 10 is lifted with a recorded ISO container 2 with a minimum lifting height h to transport this by moving the Poralhubgeräts 1 in the direction of travel F. can.

In addition, the gantry lifting device 1 comprises a machine platform 11 which is arranged between the gantry supports 6d and above the load-carrying means and which is designed as a frame-shaped steel construction and therefore weighs approximately 5 l. The machine platform 1 1 is in accordance with the limited by the portal supports 6d base surface of the support structure in plan view substantially

rectangular shaped and fitted between the gantry supports 6d. Here, the machine platform 1 1 is framed by a scaffold-like railing 1 1 a, which serves to secure operators who can enter the machine platform 1 1 via a ladder, not shown, for example, for maintenance. The machine platform 1 1 is therefore accessible.

On the machine platform 1 1 at least the drive unit 5a is arranged. The machine platform 1 1 thus serves as a support structure for accommodating the above-mentioned components of the drive unit 5 a. In addition, on the

Machine platform 1 1 also control cabinets 5b, braking resistors and other drive components of the portal lifting device 1 may be arranged. Also the

Lifting device may be at least partially disposed on the machine platform 1 1. In the present first embodiment, accordingly

Cable drums 9b of the cable pulling device 9 mounted on the machine platform 1 1. As a result, the machine platform 1 1 including the recorded components may have a weight of more than 15 t. In terms of that

Total weight of the portal lifting device 1 of more than 70 t, the proportion of

Machine platform 1 1 including the recorded components up to 20%. These weight ratios or weight distributions relate to the illustrated 1 over 4 device. In 1 over 2 devices with a lower total weight, which is, however, usually more than 60 t, the proportion of the machine platform 1 1 is correspondingly larger, resulting in a reduction of the overall center of gravity correspondingly advantageous in terms of stability of the portal lifting device. 1 effect.

Even with a correspondingly large proportion of the weight of the

Machine platform 1 1 on the total weight of the portal lifting device 1 to achieve the most stable construction and operation of the portal lifting device 1 is the Machine platform 1 1 unlike the above-mentioned conventional gantry lifting devices not in the area of the upper frame 8 with a maximum possible distance to the floor surface 4 fixed. Instead, the overall center of gravity of the portal lifting device 1 can be raised or lowered as needed and thus changed in the vertical direction. For this purpose, the machine platform 1 1 is height adjustable and thus parallel to the lifting direction H raised and lowered stored on the portal supports 6 d. To the machine platform 1 1 accordingly relative to the

Upper frame 8 to move translationally and parallel to the longitudinal extent of the portal supports 6d, the machine platform 1 1 is connected to the lifting device for the load-carrying means and on this together with the

Lifting and lowering of load handler.

The machine platform 11 is movable between a lower end position (see FIG. 3) and an upper end position (see FIG. 4). In the figure 1 is the

Machine platform 1 1 arranged between two end positions in an intermediate position. In the lower end position, the machine platform 1 1 is located with its underside on schematically illustrated brackets 6e, which are each arranged on the four portal supports 6d. The brackets 6e thus serve as support elements for the machine platform 1 1 and are each directed in the manner of a Kragträgers of the corresponding portal support 6d away, so that the machine platform 1 1 is held in the lower end position form fit to the portal supports 6d. In the lower end position, the machine platform 1 1 is arranged at the greatest possible distance from the upper frame 8 and corresponding manner at the smallest possible distance from the floor surface 4. The portal lifting device 1 is usually operated in the driving position and lowered into the lower end position machine platform 1 1 (see Figure 3) when the gantry lifting device 1 over longer distances, for example, between a so-called STS crane (ship to shore crane) and a container warehouse is moved to transport an ISO container 2, without this must be raised during transport beyond the minimum lifting height h. This can also be done in the course of an empty journey without recorded ISO container 2. The operation of the gantry lifting device 1, however, as shown in Figure 1 can also be done in the driving position when the machine platform 1 1 is disposed between two end positions in an intermediate position. For this purpose, a separate lifting drive described in detail in the last paragraph of the description may be provided, in particular for moving and holding the machine platform 11 between the two end positions. This may be the case, for example, if the portal lifting device 1 does not have to be moved at maximum speed for a shorter transport of an ISO container 2, but the maximum lifting height h is required for receiving and delivering the ISO container 2. In such cases, a lowering of the machine platform 1 1 in the lower end position in relation to the driving time between recording and delivery be too time-consuming, so that for correspondingly slower speeds achievable by lowering the machine platform 1 1 in an intermediate position stability of

Portalhubgeräts 1 is sufficient.

The portal lifting device 1 has the lowest overall center of gravity and thus the

highest possible stability and the best dynamic properties when the machine platform 1 1 in the lower end position. As a result, higher speeds can be realized safely. Each position of the machine platform 1 1 above the lower end position thus leads to the lower end position to a higher overall center of gravity, lower stability and correspondingly poorer dynamic properties. With respect to the upper end position, this applies correspondingly reversed for each position of the machine platform 1 1 below the upper end position. In the upper end position, the machine platform 1 1 is arranged in the region of the upper frame 8 with the smallest possible distance from the upper frame 8 and corresponding manner with the greatest possible distance to the floor surface 4. The upper end position of the machine platform 1 1 defines the maximum lifting height h corresponding to the overall height of the portal lifting device 1, in the present example, a 1 over 4 device.

The driver's cab 1 a provided in the present exemplary embodiments is arranged on the front portal frame 6 a on its side remote from the machine platform 1 1. Here, the driver's cab 1 a extends below the underside of the machine platform 1 1 and is seen in plan view in one

Movement of the lifting device arranged, as the

Lifting device each extending through the front and rear portal supports 6d on the corresponding side facing away from the machine platform 1 1 side. The driver's cab 1 a is in this case optionally fixed to the machine platform 1 1 and thus jointly and uniformly raised and lowered with this along the longitudinal extent of the portal supports 6 d. Since the cab 1 a usually a weight of about 2 t, increases in this case, the above-described effect of the displacement of the center of gravity of the gantry lifting device 1 by means of

Height adjustment of the machine platform 1 1. The cab 1 a is for

Operators on a not shown own ladder or on the

Machine platform 1 1 accessible.

FIG. 2 shows a view of the portal lifting device 1 from FIG. 1 in a lifting position. In the lifting position, the gantry lifting device 1 is during a

Lifting. Accordingly, the spreader frame 10 with the ISO container 2 received thereby is already raised relative to the driving position to a greater lifting height h. In addition, the machine platform 1 1 is arranged between the two end positions and thus above the lower end position. The portal lifting device 1 shown in FIG. 2 has a different form than that shown in FIG

Portalhubgerät 1 no separate lifting drive for the machine platform 1 1 on. The moving and holding the machine platform 1 1 between the two end positions instead takes place as described below on the lifting device and in particular the load receiving means.

In order to raise the machine platform 1 1, the load-receiving means arranged at any time below the machine platform 1 1 is lifted via the cable pulling device 9 until it comes into contact with the machine platform 1 1 at its underside. If the load-carrying means is further raised, the machine platform 1 1 is taken by the load-carrying means and together with the

Lifting device lifted from the support elements. In this way, the machine platform 1 1 can be raised and held by means of the cable pulling device 9 and the load-receiving means from the lower end position in each above lying position to the upper end position. Accordingly, the

Lifting device above the lower end position loaded not only with the weight of the load receiving means and the received ISO container 2, but in addition to the total weight of the machine platform 1 1 and the components arranged thereon.

Thus, the ISO container 2 can be turned off on the stack of four ISO containers 2 shown in FIG. In the same way, the lifting of the

Lifting device and the machine platform 1 1 to the top ISO container 2 of a stack of five ISO containers 2 record and then lower in a lowering process. Depending on which stroke height h is required to settle an ISO container 2 on a stack or to record thereof, this can optionally also be done without the machine platform 1 1 must be lifted from the lower end position. Accordingly, only at high lifting heights h a higher overall center of gravity must be taken into account and at lower lifting heights h, the set in the driving position low

Main center of gravity of the Portalhubgeräts 1 are maintained during the lifting process.

So that the load handling device does not interfere with the movement range of the

Lifting means disposed driver's cab 1 a collided when a lifting of the machine platform 1 1 is necessary due to the required lifting height h, are provided between the load receiving means and the underside of the machine platform 1 1 serving as a spacer and driver rods 10c. The rods 10c are on the load-receiving means, in particular the cross beams 10b of

Spreaderrahmens 10, attached (see also Figure 1) and are hereby raised together, but can also be attached to the machine platform 1 1. Die Spreaderrahmens 10 sind an der Spreaderrahmens 10 befestigt. Here, the rods 10c extend parallel to the portal supports 6d in the direction of the underside of the machine platform 1 1, so that the machine platform 1 1 at

Lifting the load-carrying means is taken before the load-carrying means collides with the driver's cab 1 a. In addition, the rods 10c are arranged so that they do not collide with the support elements, but can be passed over when lifting this. Preferably, the bars 10c are made of plastic,

in particular rubber to produce a damping effect when the

Lifting device with the machine platform 1 1 comes into contact.

Since in the first embodiment of Figures 1 and 2, the cable drums 9b of the cable pulling device 9 are arranged on the machine platform 1 1, the above-described Einscherung each rope 9d is effective as long as the load-carrying means or the rods 10c and the machine platform 1 1 are spaced apart. As soon as these are in contact as described above and bear against one another, this leads to the fact that the power flow is bridged by the cable strand running between the respective deflection roller 9a and the cable drum 9b, whereby the corresponding cable strand and thus the reeving is ineffective becomes. In a corresponding manner, this results in a change in the force to be applied by the lifting device, depending on whether the machine platform 1 1 deposited in the lower end position during the lifting operation and thus of the

Load-receiving means may remain decoupled or suspended together with this on the ropes 9 d of the cable pulling device 9.

FIG. 3 shows a view of a portal lifting device 1 in a second

Embodiment in a driving position. Here, the machine platform 1 1 is in the lower end position and is accordingly on the consoles 6e. The gantry lifting device 1 in the second embodiment differs from the first embodiment essentially by a different type of construction of the cable pulling device 9. Here, the cable drums 9b of the cable pulling device 9 are not arranged on the machine platform 11. Instead, a cable drum 9b is arranged on each of the two chassis carriers 5 in order to be able to wind or unwind respectively two of the four cables 9d. Alternatively, a separate cable drum 9b can also be provided for each cable 9d. As a result of this structure, the cables 9d, starting from their first end fastened to the corresponding cable drum 9b, run vertically upwards past the machine platform 11 to the upper frame 8. There, each cable 9d is guided over a first guide roller 9c, which is approximately vertical is arranged above the cable drum 9b. From this, the cable 9d extends substantially horizontally in the direction of a second guide roller 9c, which is mounted in the region of a corner of the upper frame 8. From the second

Guide roller 9c, the cable 9d is deflected approximately vertically downwards in the direction of the pulley 9a attached to the load-receiving means. On this basis, as in the first embodiment, the cable 9d is guided in a substantially vertical upward direction to the corresponding cable anchor point S on the upper frame 8, which is arranged next to the associated second guide roller 9c. The guide rollers 9 c are arranged as well as the rope fixed points S on an inner side of the upper frame 8. In FIG. 3, a total of four guide rollers 9c and two rope fixing points S are shown, which are provided for the two cables 9d, which, viewed in the direction of FIG. 3, are assigned to the rear of the two chassis carriers 5 or the cable drum 9b mounted there. The opposite four

Guide rollers 9c for the two remaining ropes 9d and their rope fixed points S are covered by the upper frame 8 and the front side member 7, but arranged in the same way. Also in this construction of the cable pulling device 9, each cable 9d is reeved over the guide roller 9a as in the first embodiment. Unlike in the first embodiment, however, the reeving in the second embodiment is also effective when the load receiving means is in contact with the machine platform 11 due to the guide rollers 9c provided on the upper frame 8 in the sense of fixed pulleys. By the guide rollers 9c all running of the pulleys 9a cable strands remain effective. Incidentally, for the gantry lifting apparatus 1 in the second embodiment, the explanations regarding the first embodiment apply correspondingly.

FIG. 4 shows a view of the portal lifting device 1 from FIG. 3 in a lifting position. In this case, the machine platform 11 supported on the load-carrying means via the rods 10c is already lifted by the cable pulling device 9 into the upper end position and thus further than in the lifting position of FIG.

Correspondingly, the spreader frame 10 serving as load-carrying means is also raised so far with an ISO container 2 received therefrom that the ISO container 2 can be set down on the stack of four ISO containers 2 shown above in FIG.

In the upper end position, the machine platform 1 1 is arranged in the region of the upper frame 8 and arranged on the machine platform 1 1 components, such as the drive unit 5 a and the cabinets 5 b, protrude upward through the upper frame 8.

The previous comments on lifting operations based on the driving position, in particular with respect to the described operative connection between the

Cable pulling device 9, which takes place via the rods 10c coupling of the

Lifting device and the machine platform 1 1, apply analog or vice versa for lowering operations. Accordingly, in this case takes place decoupling of the lifting device or the rods 10c and the machine platform 1 1 when the machine platform 1 1 deposited on the support elements and is held by this, while the load receiving means can then be further lowered. Also, in Portalhubgeräten with smaller maximum lifting height h, for example 1 over 3 devices, the machine platform 1 1 can be raised and lowered accordingly. As mentioned above, the machine platform 1 1 at all

Embodiments alternatively be held, raised or lowered independently of the lifting device and the load receiving means by a separate lifting drive for the machine platform 1 1 is provided (see Figure 1). As a result, the machine platform 1 1 and the load receiving means can be raised or lowered relative to each other and each relative to the upper frame 8, when the machine platform 1 1 above the lower

End position is located. The driver's cab 1 a can be raised or lowered in deviation from the illustrated embodiments with a separate lifting drive independently of the machine platform 1 1 and the load-carrying means with a translational movement. The separate lifting drive can in each case be designed, for example, as a rack drive, spindle drive, lifting cylinder or cable pull.

LIST OF REFERENCE NUMBERS

1 portal lift

1 a driver's cabin

2 ISO containers

3 wheel

4 corridor area

5 chassis carrier

5a drive unit

5b control cabinet

6a first portal frame

6b second portal frame

6c portal carrier

6d gantry support

6e console

7 side members

8 upper frame

9 Cable pulling device

9a pulley

9b rope drum

9c leadership role

9d rope

10 spreader frame

10a side member

10b cross member

10c bar

1 1 machine platform

1 1 a railing

12 bracing

F direction of travel h lifting height

H stroke direction

S rope fixed point

Claims

claims

1 . Portal lifting device (1) for ISO containers (2), in particular in the manner of a straddle carrier, the four spaced apart and parallel to each other in the vertical direction extending portal supports (6d), which at their upper ends via an upper frame (8) connected to each other , and a between the portal supports (6d) arranged machine platform (1 1), wherein the

Machine platform (1 1) is mounted raised and lowered, characterized in that the machine platform (1 1) between the portal supports (6d) and below the upper frame (8) relative to the upper frame (8) is movable in the vertical direction.

2. gantry lifting device (1) according to claim 1, characterized in that the

Machine platform (1 1) between an upper end position and a lower end position is movable and held in the lower end position positively to the portal supports (6d) and in this case preferably rests on the portal supports (6d) arranged support elements.

3. gantry lifting device (1) according to one of claims 1 to 2, characterized in that on the machine platform (1 1) a drive unit (5a) of the gantry lifting device (1) is arranged and preferably in addition control cabinets (5b),

Braking resistors and / or further drive components of the portal lifting device (1) on the machine platform (1 1) are arranged.

4. gantry lifting device (1) according to one of claims 1 to 3, characterized in that the gantry lifting device (1) has a lifting device and via the lifting device below the machine platform (1 1) liftable and lowerable load-receiving means for ISO containers (2) , and in addition one of the lifting device

has independent lifting drive over which the machine platform (1 1) can be raised and lowered via the lifting device.

5. gantry lifting device (1) according to one of claims 1 to 3, characterized in that the gantry lifting device (1) has a lifting device and via the lifting device below the machine platform (1 1) liftable and lowerable load-receiving means for ISO containers (2) and the machine platform (1 1) via the lifting device can be raised and lowered.

6. gantry lifting device (1) according to claim 5, characterized in that the

Lifting device is coupled to the machine platform (1 1) such that the machine platform (1 1) can be raised and lowered by means of the lifting device from the lower end position to any position above the lower end position and the machine platform (1 1) in this case on the load receiving means supported and thereby raised and lowered together with the load-carrying means.

7. gantry lifting device (1) according to one of claims 4 to 6, characterized in that the lifting device is so coupled to the machine platform (1 1), that the load receiving means regardless of the machine platform (1 1) can be raised and lowered when the Machine platform (1 1) in the lower end position

is positively held on the portal supports (6d).

8. gantry lifting device (1) according to one of claims 4 to 7, characterized in that between the machine platform (1 1) and the load receiving means at least one spacer, preferably in the form of a load-receiving means attached to the rod (10c) is arranged.

9. gantry lifting device (1) according to one of claims 4 to 8, characterized in that the lifting device is designed as a cable pulling device (9) and preferably four cable drums (9b) wound up and unwound ropes (9d), each between their on a the rope drums (9b) fixed first end and their on the upper frame (8) via a rope fixed point (S) attached to the second end via a load receiving means arranged on the deflection roller (9a) are guided.

10. gantry lifting device (1) according to claim 9, characterized in that the

Cable drums (9b) on the machine platform (1 1) or arranged on a lower end of the gantry supports chassis support (5) of the portal lifting device (1) are arranged.

1 1. Portal lifting device (1) according to one of claims 1 to 10, characterized in that the gantry lifting device (1) has a driver's cab (1 a), which is mounted raised and lowered.

12. gantry lifting device (1) according to claim 1 1, characterized in that the

Driver's cab (1 a) fixed to the machine platform (1 1) connected and jointly hereby raised and lowered stored.

13. gantry lifting device (1) according to one of claims 1 to 12, characterized in that the gantry lifting device is designed as 1 via 4-device.