EP0098482B1 - Lifting and depositing device for transportable receptacles, for example containers, shelters, conversion structures or the like - Google Patents

Description

The invention relates to a lifting device for portable containers, e.g. Containers, shelters, swap bodies or the like, with several rack and pinion winches to be fastened to the container, the winch housing of which can be connected to the container, can be raised and lowered along a supporting leg with a rack, and have parts which can be pivoted away or removed.

Such a lifting or depositing device has become known from DE-A 1 586 723. With this device, there is the possibility that the winch housing can be opened to the outside by the parts which can be swiveled away or removed, so that the support legs can be inserted into the open winch housing from the outside transversely to the lifting direction, which has the advantage that the support legs can be found in practically everyone Height of the container can be connected to the rack winches on the container side. This eliminates the time-consuming crank work that is otherwise required to carry out the two empty strokes in one work cycle (depositing the container from the vehicle onto the ground and later reversing the process). As is known, the individual rack and pinion winches are pushed together in a space-saving manner in the idle state. Due to the possible separation of the support legs from the rack and pinion jacks, which in turn are detachably attached to the transportable containers, a division of this lifting and depositing device into individual parts of lower weight that are easier to manipulate is achieved. Nevertheless, the rack and pinion gears forming part of the boom still have a relatively high weight and are therefore correspondingly difficult to handle. In addition, the support legs cannot be moved axially by hand in the winch housing when the winch housing parts are pivoted away, in order to bridge any necessary idle stroke. For this purpose, the support legs must always be removed from the side of the open winch housing.

From DE-B 2 540 400 a lifting or depositing device for transportable containers has already become known, in which the arms can be separated from the rack winches or their winch housings. Here, however, the rack and pinion winch gear is in one piece connected with relatively high winch housings and forms a component with a correspondingly high weight. Another disadvantage of this known device is that due to the closed winch housing, the idle stroke must always be shifted both upwards and downwards via the rack and pinion gear by time-consuming crank work.

The invention has for its object to provide a lifting or depositing device for transportable containers in which by moving the support legs in the winch housing by hand the time-consuming idle stroke to be carried out via the winch gear can be avoided and at the same time in the individual parts of the lifting or A further weight saving is achieved so that its handling is made easier. Furthermore, cleaning of the gears or at least the drive pinion of the rack winches and the racks in the winch area should be made possible if necessary.

According to the invention, this object is achieved in that the pivotable or removable part of each winch housing is designed as an attachment or add-on gear.

When the attachment or add-on gear is removed, the weight of the individual parts of each rack and pinion jack of the lifting or lowering device is further reduced, so that they are easier to manipulate. If the attachment or add-on gear is swiveled away or removed, necessary cleaning work on the gear can also be carried out easily. This is e.g. not possible with the lifting or depositing device according to DE-A 1 586 723, since here the winch gear is arranged on the boom between the container and the individual toothed racks or support legs, the toothed racks on the support legs facing the container. The same also applies to the lifting or lowering device according to DE-B 2 540 400, in which the winch gear housing is integrally connected to the guide parts of the winch housing for the support legs.

The invention also makes it possible that the bridging of the idle stroke by actuating the winch gears is omitted in the case of pivoted attachment or add-on gear units, by simply moving the support legs with their toothed racks in their winch housings by hand upwards or downwards. When dismantling the lifting or lowering device, it is also possible to pull the support legs with their racks out of the winch housing completely.

The embodiment of the invention according to claim 2 has the advantage that the support leg with rack in the guide part of the winch housing can be secured against unwanted slipping by the friction brake device when the attachment gear is pivoted out or removed. The additional removal safeguard, which is provided in combination with the friction braking device, finally prevents the support leg from slipping out of the winch housing completely.

The further embodiment of the invention according to claim 3 has the advantage that the rack (with the support leg) can be fixed to the guide part of the winch housing when the winch housings can be opened outwards, even when the attachment or add-on gear is pivoted out or removed. This advantage proves to be very expedient if the lifting or depositing device is heavily soiled with a more or less highly supported container, so that the mani required for stiffness or even blocking rack winches to be actuated pulation of the container. In this case, all you have to do is swivel out or remove the front or add-on gearboxes so that at least their drive pinions and the areas of the racks can be easily cleaned compared to the gearboxes. This work can be done with the lifting or lowering device under load, because when the gearbox is swung out or removed, the rack in question is fixed to the winch housing by the locking device. The associated lifting device advantageously enables the transmission to be released or separated from the respective rack under load. This embodiment of the invention advantageously also allows the attachment or add-on gear to be removed and stored in a safe place when the container is supported on the lifting or depositing device, thereby securing against misuse of the lifting and depositing device, for example when the container is standing for a long time is guaranteed. However, it is also possible to use the removed attachment or add-on gearboxes for other containers to be lifted or set down, which means that one set of gearboxes in succession can be sufficient to actuate a plurality of lifting or depositing devices.

The embodiment of the invention according to claim 4 has the advantage that the establishment of a perfect operative connection between a respective attachment gear and a rack is facilitated. The guide part, which slides along the support leg, also forms a guide for the housing of the attachment gear to be fitted.

If, according to claim 5, the guide part of the winch housing forms a part that is detachably connected to a boom to be attached to the container, the weights of the individual parts of the lifting or lowering device are further reduced and consequently their handling is made even easier.

If, according to claim 6, the attachment gear is detachably connected at its upper and lower ends by plug bolts to the guide part of the winch housing, the gear can advantageously be pivoted up or down by the other plug bolts by pulling out only one plug bolt for the cleaning purposes mentioned at the beginning.

The development of the invention according to claim 7 ensures that the guide parts of the winch housing cannot buckle laterally when the support legs are at a slightly oblique angle.

If, according to claim 8, the auxiliary gear with at least one gear wheel laterally overlaps the guide part of the winch housing, a relatively large reduction ratio can advantageously be achieved with a relatively flat gear.

A simple expedient embodiment of the lifting and locking device can be seen from claim 9. The movement of the wedge-shaped parts against or away from each other can e.g. by means of a spindle which is axially fixed in the locking element but can be rotated by hand with right and left-hand threads at the ends and which engage in corresponding threads in the wedge-shaped parts.

Through the development of the invention according to claim 10, the locking element can be kept relatively small in its dimensions, which means saving weight, the safety rod in the inserted state preventing the support leg from breaking out of the guide part of the winch housing (tilting around the locking element) to the outside.

• Figur 1 eine Seitenansicht einer an einem Behälter angebauten Zahnstangenwinde für ein Stützbein der Hub- bzw. Absetzvorrichtung, wobei von dem Stützbein und dem Behälter nur jeweils ein Teil gezeigt ist;
• Figur 2 eine Vorderansicht der Anordnung nach Fig. 1;
• Figur 3 bis 5 verschiedene Querschnittsansichten entlang den Linien A-A, B-B bzw. C-C in Fig.1;
• Figur 6 eine Seitenansicht des Vorsatz- oder Anbaugetriebes einer Zahnstangenwinde entsprechend Fig. 1;
• Figur 7 eine der Fig. 1 ähnliche Seitenansicht, jedoch mit ausgeschwenktem Vorsatzgetriebe;
• Figur 8 eine Seitenansicht des Führungsteils des Windengehäuses mit einem Teil eines Stützbeins mit Zahnstange, dem Arretierelement und der Sicherungsstange im Funktionszustand;
• Figur 9 eine Vorderansicht der Anordnung nach Fig. 8;
• Figur 10 und 11 je einen Teilschnitt entsprechend den Schnittlinien D-D bzw. E-E in Fig. 9;
• Figur 12 eine vergrösserte Darstellung des unteren Teils der Fig. 9 im Schnitt;
• Figur 13 eine Seitenansicht der Anordnung nach Fig. 12;
• Figur 14 eine Seitenansicht einer zweiten Ausführungsform der Erfindung mit seitlich geschlossenem Windengehäuse und angebautem Vorsatz-oder Anbaugetriebe;
• Figur 15 eine Seitenansicht des Führungsteils des Windengehäuses für das Stützbein mit Zahnstange entsprechend der Ausführungsform nach Fig. 14;
• Fig. 16 eine Seitenansicht des Vorsatz- oder Anbaugetriebes der Zahnstangenwinde entsprechend Fig. 14;
• Figur 17 eine der Fig. 15 ähnliche Seitenansicht, jedoch mit einer Reibungs-Bremsvorrichtung, kombiniert mit einer Entnahmesicherung für das Stützbein und
• Figur 18 eine Detailansicht in Pfeilrichtung A in Fig. 17.

The invention is subsequently explained on the basis of the drawings of exemplary embodiments. Show it:

• Figure 1 is a side view of a rack winch mounted on a container for a support leg of the lifting or lowering device, only a part of the support leg and the container being shown;
• Figure 2 is a front view of the arrangement of Fig. 1;
• Figure 3 to 5 different cross-sectional views along the lines AA, BB and CC in Figure 1;
• Figure 6 is a side view of the attachment or add-on gear of a rack and pinion jack corresponding to Fig. 1;
• FIG. 7 shows a side view similar to FIG. 1, but with the attachment gear pivoted out;
• FIG. 8 shows a side view of the guide part of the winch housing with part of a support leg with a toothed rack, the locking element and the securing rod in the functional state;
• Figure 9 is a front view of the arrangement of Fig. 8;
• 10 and 11 each a partial section according to the section lines DD and EE in Fig. 9;
• Figure 12 is an enlarged view of the lower part of Figure 9 in section.
• FIG. 13 shows a side view of the arrangement according to FIG. 12;
• FIG. 14 shows a side view of a second embodiment of the invention with the winch housing closed at the side and an attached attachment or add-on gear;
• Figure 15 is a side view of the guide part of the winch housing for the support leg with a rack according to the embodiment of FIG. 14;
• FIG. 16 is a side view of the attachment or add-on gear of the rack and pinion jack corresponding to FIG. 14;
• FIG. 17 shows a side view similar to FIG. 15, but with a friction braking device, combined with a removal safeguard for the support leg and
• FIG. 18 shows a detailed view in the direction of arrow A in FIG. 17.

The embodiments of the invention according to Figures 1-13 and 14 to 18 represent lifting and lowering devices that are for Be containers with a generally rectangular floor plan. Accordingly, both exemplary embodiments have four support legs 11 with associated rack and pinion jacks 12 or 12 ', which can be detachably attached laterally to a container, for example 10 or at the corners thereof, by means of brackets 13 or 13'. By means of these lifting or depositing devices, a container can be lifted and placed, for example, on the loading surface of a truck or vice versa raised from this loading surface and carried by the devices in a raised state or can also be placed on the floor or other supporting surface. A rack and pinion winch 12 with an associated support leg 11 of the first exemplary embodiment is described below. All rack winches 12 and support legs 11 correspond to each other.

The rack and pinion winch 12 has a guide part guided on the support leg 11! 14 with a substantially U-shaped cross section. The support leg 11 consists, for example, of a square tube. The lower end of the support leg 11 carries a foot plate 15. The guide part) 14 is rigidly connected to the arm 13 in the exemplary embodiment, but a detachable connection of these parts is also possible. As already mentioned above, the arm 13 can be detachably attached to the side wall of the container 10 in the corner region thereof. On the outward side of the support leg 11, a rack 16 is preferably attached centrally.

The rack and pinion winch 12 also contains an attachment or add-on gear 17 which is arranged on the guide part 14 so as to be pivotable or removable. In detail, the housing of the auxiliary transmission 17 is encapsulated, and in the attached state it extends partially in the guide part) 14 with a U-shaped cross section, as can be seen in FIGS. 3 to 5. In the exemplary embodiment, the auxiliary gear 17 is detachably connected to the guide part 14 by similar plug pins 18, which extend appropriately through corresponding bores 20, 21 in the guide part 14 and 22 in the housing of the auxiliary gear 17. The plug pins 18 carry at one end a part 23 with an inwardly directed screw surface which interacts with an outwardly pointing screw surface on parts 24 which are fastened to the outside of the guide part 14. The parts 24 contain central bores through which the socket pins 18 extend. The opposite ends of the plug pins 18 are equipped with grooves 25 for receiving securing tabs 26 provided with corresponding slots. When the securing tabs 26 are attached, a corresponding rotation of the plug pins 18 by means of the levers 27 due to the interaction of the screw surfaces on the parts 23 and 24 can result in the housing of the auxiliary gear 17 being braced in the guide part 14. In this state, the plug pins 18 at the same time secure the guide part (14) against «spreading» through the support leg 11 when tipping forces act on it, which can occur in uneven terrain. An additional or alternative safeguard in this regard is formed in the exemplary embodiment by two retaining tabs 28 (FIGS. 1 and 4) attached to the housing of the auxiliary gear 17 at the same height, which laterally overlap the guide part 14 when the auxiliary gear 17 is attached.

With 29 the hand crank of the auxiliary gear 17 is designated and at 30, 31 and 32 some gears of the auxiliary gear are indicated in Fig. 1. In order to achieve a relatively flat reduction gear 17 with the desired large reduction ratio, the gear 32 with the largest diameter is arranged in a housing part 34, which the guide part! 14 laterally overlapped. The gear wheel 32 is non-rotatably seated on a shaft 33 (FIG. 5) on which the drive pinion 35 for the toothed rack 16 is also fastened to the support leg 11.

If e.g. in dusty terrain, the container 10 is carried for a long time in the raised position by the support legs 11, the drive pinion 35 and the racks 16 can become dirty, which can cause stiffness or even blockage of the rack winches 12. In order to be able to clean the drive pinions 35 and the toothed racks 16 in relation to the auxiliary gears 17 in these cases before the rack winches 12 have to be actuated, the auxiliary gears 17 are either removed from the guide parts 14 or, for example, pivoted out according to FIG. 7. For this purpose, the securing tabs 26 are first removed so that the plug pins 18 can be pulled out to the right as shown in FIG. 2. Then the attachment gear 17 can be separated from the guide part 14. If the above-mentioned parts are to be cleaned with the attachment gear 17 only pivoted out, only the lower plug pin 18 is removed, for example, so that the attachment gear 17 can be pivoted upward about the upper attachment pin 18 (FIG. 7). In order to enable the removal of the auxiliary gear 17 from the guide parts 14 or their swiveling out under load (i.e. with the container 10 raised), a lifting and locking device must be arranged beforehand between each guide side 14 and the associated support leg 11 or its rack 16 is explained below in particular with reference to FIGS. 8 to 13.

The guide part 14 of the winch housing with a U-shaped cross section is provided on its two legs near the front with laterally aligned openings 36 and 37. The latter are open at the bottom. A locking element 38, which is provided with a toothing 39 (FIG. 10), which is brought into engagement with the toothed rack 16, is inserted laterally into the openings 37 laterally before pulling out one or both plug bolts 18. If the locking element 38 is positioned in this way in the openings 37, from the outside forth into the remaining spaces 40 between the upper edge of the locking element 38 and the openings 37 wedge-shaped parts 41, which cause the guide part 14 to be raised slightly relative to the support leg 11, as a result of which the friction between the drive pinion 35 and the (loaded) rack 16 so far is reduced that the attachment gear 17 can be removed or swung out of the guide part 14 after removal of one or both socket pins 18. Before that, however, a safety rod 42 is inserted through the openings 36, which prevents the support leg 11 from tipping out of the guide part 14 to the front when the auxiliary gear 17 is removed. For this purpose, the securing rod 42 is in contact with the toothed rack 16. It should also be noted that the toothed rack winches 12 consist of a known design which is self-locking under load.

The wedge-shaped parts 41 cooperate with their inclined surface 46 with corresponding inclined surfaces 45 on the locking element 38. In a longitudinal bore 47 in the locking element 38 is axially fixed, but rotatable, a spindle 43 is mounted, the ends of which are provided with a left-hand and right-hand thread 48, 49, respectively. For the axial fixation of the spindle 43, an annular collar 50 is provided on the latter, which is held against a shoulder 52 in the longitudinal bore 47 by a bush 51 pressed into the enlarged part of the longitudinal bore 47. The left-hand or right-hand thread 48, 49 of the spindle 43 is in engagement with corresponding internal threads on sleeve-shaped actuating parts 54, 55 for the wedge-shaped parts 41. For this purpose, the sleeve-shaped actuating parts 54, 55 are in the longitudinal bore 47 or in the bushing 51 axially displaceably mounted and vertically displaceably connected to the wedge-shaped parts 41 in terms of drive. With a corresponding rotation of the spindle 43 by means of its rotary knob 44 by hand, the wedge-shaped parts 41 are pulled against one another via the actuating parts 54, 55, they move upwards due to the interacting inclined surfaces 45, 46, bridge the spaces 40 and finally slightly opposite the guide part 14 the rack 16 or the support leg 11 so that the above-mentioned frictional engagement between the drive pinion 35 and the rack 16 is canceled. By turning the threaded spindle 43 in the opposite direction, the wedge-shaped parts 41 can be loosened again, so that the locking element 38 can be removed again after the attachment gear 17 has been fitted.

7, it is also noted that the guide part 14 is shown in its lowest edge position, in which it is supported on a collar 56 on the support leg 11, which is why the locking element 38 is not required here when the attachment gear 17 is pivoted out.

In the exemplary embodiment according to FIGS. 14-18, the rack and pinion winch 12 'has a guide part which can be raised and lowered on the support leg 11 and is completely closed! 14 'right) of great length (corresponds approximately to the container height), which is detachably attached to the side of the container (not shown) or at the corners thereof by means of brackets 13'. The support leg 11 with rack 16 corresponds essentially to that of the first embodiment. The tubular guide part 14 'is closed at the top by a cover 60 which can be used for e.g. Cleaning purposes can be removed. Furthermore, the guide member 14 'has on its outward-facing side two upper and lower, laterally spaced tabs 61 and 62 with laterally aligned bores 63 and a recess 64 which exposes a section of the rack 16.

In this exemplary embodiment, the attachment or add-on gear 17 'has a housing 65 with upper and lower projections 66 and 67, which contain transverse bores 68. The projections 66 and 67 fit exactly between the pairs of tabs 61 and 62, respectively. As a result, if the attachment or add-on gear 17 'with the guide part! 14 'is to be connected, one only has to insert the projections 66 and 67 between the pairs of tabs 61, 62 and laterally align the bores 63, 68 with one another, so that the plug pins 18' can be inserted through these bores. The housing 65 of the attachment or add-on gear 17 ', with a housing section 69 with a U-shaped cross section, suitably comprises the guide part 14' and the drive pinion 35 'of the gear 17' comes into engagement with the toothed rack 16. With 70 in FIGS. 14 and 16 denotes the drive square pin of the add-on gear 17 ', onto which a hand crank (not shown) for actuating the gear can be attached. If only the upper plug pin 18 'connects the add-on or attachment gear 17' to the guide part 14 ', the gear 17' can be swiveled clockwise away from the guide part 14 'according to FIG. 14, so that the drive pinion 35' is separated from the rack 16 . In this state or even when the attachment or add-on gear 17 'has been completely removed, one can simply move the support leg 11' in the guide part 14 'up or down to avoid an empty stroke by cranking if the container with the mounted rack winches e.g. is placed on the bed of a truck. As in the first exemplary embodiment, it can be advantageously cleaned easily when the gear 17 'is pivoted away or removed.

In order to avoid undesired relative displacement between the support leg 11 and the guide part 14 'due to the action of gravity when the drive pinion 35' is released from the rack 16, a friction brake device 70 can be provided on the guide part 14 '(FIGS. 17, 18), which is connected to the support leg 11 cooperates. In the exemplary embodiment, this device 70 has a sleeve 71 fastened to the guide part 14 ′, in which a bolt 72 is mounted in an axially movable but non-rotatable manner, which carries a friction body 73 at one end, which is supported by a spring 74 against the Support leg 11 is pressed and thus prevents the above-mentioned relative movement between the parts 11 and 14 '. For this purpose, the spring 74 is clamped between an annular collar 75 on the bolt 72 and a perforated disk 76 fastened on the inside of the sleeve 71. A pin 77 extends transversely through the bolt 72 and is guided in slots 78 which are open to the outside in the sleeve 71. In the operative state of the friction brake device 70, which is shown in FIGS. 17 and 18, the pin 77 is in engagement with the slots 78. If the friction brake device 70 is to be deactivated, the pin 72 by means of the actuating button 79 is required only pull outwards against the pressure of the spring 74 in order to bring the pin 77 into contact with the outer free end edge of the sleeve 71.

If, as in the exemplary embodiment according to FIG. 17, a recess 80 with a latching lug 81 is provided at its upper end at the upper end of the support leg 11, the friction braking device 70 also forms a removal safeguard. The locking lug 81 namely sticks to the friction body 73 immersed in the recess 80 by spring force on the bolt 72 when the support leg 11 slides downward in the guide part 14 '. The friction braking device can also be installed in the hollow support leg and can cooperate with one or two friction bodies with the inner wall of the guide part 14 '(not shown).

Claims (10)

1. Lifting and depositing device for transportable receptacles, for example containers, shelters, conversion structures or the like, having a plurality of rack-type jacks (12,12') to be fixed to the receptacle (10) and whose housings can be connected to the receptacle, are raisable and lower- . able in each case along a supporting leg (11) with a rack (16) and have parts which can be swung away or removed, characterised in that that part of each jack housing which can be swung away or removed is in the form of an accessory or attachable drive unit (17, 17').

2. Device according to claim 1, characterised in that between a guide element (14') of the jack housing which can be connected to the receptacle (10) and the supporting leg (11) with the rack (16) there is provided a friction braking device (70) which, when the accessory drive unit (17') has been swung out or removed, secures the supporting leg and rack in the guide element of the jack housing against slipping down, and a removal safety device (80, 81) for the supporting leg and rack is arranged in addition or combined with the friction braking device.

3. Device according to claim 1, characterised in that between a guide element (14) of the jack housing which can be connected to the receptacle and the rack (16) on the supporting leg (11) a cooperating lifting and locking device (38-44) is provided which, when the accessory or attachable drive unit (17) has been swung out or removed, locks the rack (16) to the guide element (14) of the jack housing.

4. Device according to claim 1, characterised in that the enclosed-construction housing of the accessory drive unit (17) is suitably accommodated in part by a guide element (14) of the jack housing of U-shaped cross-section.

5. Device according to claim 4, characterised in that the guide element (14) of the jack housing forms a part which is detachably connected to an arm (13) to be fixed to the receptacle (10).

6. Device according to claim 1 or 4, characterised in that the accessory drive unit (17) is detachably connected at its upper and lower ends to the guide element (14) of the jack housing by means of linch pins (18).

7. Device according to claim 4, characterised in that retaining lugs (28) are fixed to the housing of the accessory drive unit (17) and engage over the guide element (14) of the jack housing on both sides, or vice versa.

8. Device according to claim 1 or 4, characterised in that the accessory drive unit (17) overlaps the guide element (14) of the jack housing laterally with at least one gear wheel (32).

9. Device according to claim 3, characterised in that the lifting and locking device includes a locking element (38) which can be inserted laterally into corresponding openings (37) in the guide element (14) and has a toothing (39) which can be brought into engagement with the rack (16) on the supporting leg (11), and the locking element (38) has a slight clearance (40) in the lifting direction in the openings (37) in the guide element (14) and wedge-shaped parts (41) arranged adjustably on the locking element (38) can be driven into these spaces in order to produce a relative movement between the rack (16) and the guide element (14).

10. Device according to claim 9, characterised in that the locking element (38) is arranged in the lower end zone of the guide element (14) and in the upper end zone thereof at least one securing bar (42) which can be inserted laterally into corresponding openings (36) in the guide element (14) is provided for the supporting leg (11), or vice versa.

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