DK147256B - ROLLING SECURITY FOR LOCKING WALLS - Google Patents

Description

t47256

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a roll-down locking device for loading walls, in particular to inclined loading wall walls having at least one recess located substantially transverse to the rolling direction, in which is arranged at least one releasable and lockable locking flap which can cover the depression and which can form a cut-off.

Roll-down fuses for loading walls are already known in various embodiments, e.g. from German Patent 1,917,192 and British Patent 1,001,856.

With the aid of loading walls 'with such' of ratchet fuses .. lifted e.g. less cargo by means of trolleys from the ground on a ramp or similar level with the load of a lorry or similar or lowered in reverse.

The lifting walls are usually positioned in the lower position - depending on the position of a drawer - downwards or sideways, so that it is better to slide the load on the loading wall or roll it down from it. Until the platform is in a horizontal position, it must then be retained with rollers loaded, often under considerable power supply.

It has been found to be a disadvantage of the previously known unloading rings for the loading walls of the specified type that they do not automatically position themselves in their operating position, ie. in their starting position, even though this is required at home and abroad due to existing regulations on accident prevention, in order to be able to carry out unobstructed activities at the cargo or cargo pick-up device which is determined by proper operation. Furthermore, with the previously known unloading fuses placed on the loading walls of the aforementioned kind, it has been found that these are very difficult to place on the inside of the loading walls in recesses in these, if at the same time an outwardly closed housing, ie. gap-free loading wall, which should be designed as flat as possible for space saving and also cost reasons.

Finally, the disadvantage of unloading fuses with previously known loading barriers of the type indicated is that it is e.g. the impact of immersion on the loading lugs caused by bearing pins is disproportionately large. This creates a risk of damage to the loading goods if this eg. are bottles.

The object of the present invention is to provide a simple roll-off protection on load-bearing walls which meets the accident prevention regulations for lifting platforms, and which avoids the aforementioned disadvantages of the known roll-on lock-on devices.

According to the invention, the task is solved by the fact that the fuse flaps on the underside each have a curve or circular arcuate surface which rolls on the bottom of the loading wall and that the flaps on the upper side are provided with a flat surface, which in the starting position of the fuse flaps serves as a driving surface, each of which the fuse flaps by means of at least one spring is connected to the load side wall, and the spring is connected to each fuse flap so that the spring causes an automatic adjustment of the fuse flap in the initial position by a relief.

Furthermore, it has been found particularly advantageous to place a seal which covers the gap between two fuse flaps, thereby closing one gap remaining between two fuse flaps.

The invention is further explained in the following with reference to the drawing, in which: FIG. 1 shows the placement and incorporation of a securing device in a loading bay wall; FIG. 2 is a cross-sectional view of a securing device in the non-oscillating position; FIG. 3 shows a corresponding section of the flaps in the pivoted position; FIG. 4 is a cross-sectional view of the loading bar wall showing the locking of the locking device in the non-swung position; FIG. 5 is a similar cross-sectional view showing the locking of the securing device in the pivoted position; and FIG. 6 is a top view of a sectional fuse flap similar to that of FIG. 1 with a dotted circle designated area A, however, on a larger scale than fig. First

FIG. 1 shows a platform 1 in an inclined load-bearing wall consisting of a few mutually welded, preferably extruded aluminum cavity plates 2, each having an upper and a lower, substantially flat deck wall 3 and 4. In the upper deck wall 3 of one a cavity plate 2 adjoining a driving tongue 5 is provided with recesses which form recesses 6 and 7 extending to the lower fork wall 4, and in which are arranged at least one pair of fuse flaps 8 and 9 across the direction of movement of a usually manually operable, not shown rolling vehicle.

The platform 1 is positioned upright and lowerable in the known manner at the rear of the cargo of a loading vehicle and is inclined downwards by means of lifting and lowering devices. In the resting position, the safety flaps located in the platform in the recess flush with the driving surface 10 of the platform 1.

The 2 and 3, the flaps 8 and 9 shown on the underside are each provided with a curve or circular arc-shaped abutment surface 11 and on the upper side with a flat driving surface 12. Furthermore, each fuse flap 8 or 9 is provided with at least one spring 13, e.g. a leaf spring connected to the bottom 14 of the recesses 6 and 7 in the platform 1 in such a way that the safety flaps 8 and 9 are kept at a certain distance from each other and are always able to automatically adjust themselves to a position in which their driving surfaces 12 flush with the driving surface 10 of the platform 1.

FIG. Figures 4 and 5 show the structure and working method of a locking strip 15 with which the locking tabs 8 and 9 are held or secured in the starting position. . The locking strip 15, which is movable upwards and downwards in the secured position, is provided with four right-angled recesses 16, 17, 18 and 19, in each of which a branch extends parallel to the driving surface 10. of the platform 1, in these four recesses four engage the locking tabs 8 and 9's side walls fastened, projecting locking pins 20, 21, 22 and 23 in. The four recesses 16, 17, 18 and 19 are arranged so that the locking bolts can move therein by ups and downs of the locking tabs 8 and 9 and that a displacement of the locking strip is parallel to the driving surface 10 of the platform 1. 15, locking tabs 8 and 9 can be locked in the initial position. Furthermore, the locking strip 15 is provided with a bolt 24 which is engaged in the locking position under the cover wall 3 of the platform running surface 10 *, thereby preventing any oscillation or lifting thereof by a relatively high load on the extremities of the securing flaps 8 and 9. In order that the two securing flaps 8 and 9 can be inserted into the recesses 6 and 7 of the platform 1 together with the locking strip 15, according to FIG. 6 in the tire wall 3, at least in recess 32, through which the bolt 24 fixed to the locking strip 15 can be inserted and placed in the starting position under the tire wall 3. Preferably, at the diagonally opposite corners of the two recesses 6 and 7, recesses 32 in the corresponding position on the locking strips 15 bolts 24 can be inserted. However, if desired, it is also possible at each corner region of the two recesses 6 and 7 of the platform 1 to place a recess 32 and to place the bolts 24 at the two ends of the locking strip 15 in such a way that these bolts can be inserted. through the recesses 32 and placed under the tire guard 3 of the platform 1.

The locking strip 15 can e.g. may be releasably or non-releasably connected to a bar system not shown to operate the locking list. Conveniently, the locking strip 15 on the side facing the road surface 10 of the platform 1 has a rifle to prevent accidental slip or the like. The locking performed by means of the locking strip 15 must mainly be achieved so that, if desired, one can usually drive a manually moved transport carriage simply over the unrolling lock without blocking the rollers of the transport carriage. In this connection, it should also be noted in particular that the rolling protection in the starting position to avoid accidents has no protrusions that could cause the snub, which also refers in particular to the driving faces 12 of the safety flaps with the driving surface 10 of the platform 1.

The gap between the two fuse flaps 8 and 9 is preferably sealed with a collapsible chewing gasket 26 or the like. This seal has, at two ends, parallel beads 27 and 28 inserted and retained in correspondingly shaped recesses 29 and 30 in parallel flaps 8 and 9.

The invention is not limited to the illustrated embodiment. It is among other things for example. it is possible to design the locking of the locking tabs in a different way than the one shown. Instead of two locking flaps, only one locking flap may also be provided which secures the transport trolley in the roll-down direction if desired.

The method of unrolling protection is as follows:

Starting from the starting position, the securing tabs 8 and 9 are unloaded by loading from at least one roller 31 on the loaded transport vehicle against the effect of the leaf springs 13 on their curved or circular abutment surfaces 11 towards each other to the equilibrium position and thus together form a recess for the roller 31, which recess also As the load increases, the load becomes even deeper until a maximum value is obtained by further oscillation of the fuse flaps 8 and 9, thereby creating an even greater obstacle to the roller. Due to the curvilinear roll-off of the fuse flaps 8 and 9, a sudden blocking of the rollers is prevented, which in particular has an advantageous effect in roll containers with a high center of gravity.

In order to be able to lift the load from the recess and transport it further, advantageously only a small supply of force is needed, since only a relatively long force arm is available, on which the force for lifting the load from the recess can attack. After locating the cargo from the recess, the cargo is then transported further by exerting a force mainly in the horizontal direction.

The flaps 8 and 9 are held automatically in the starting position by means of the leaf springs 13, so the flaps are not pivoted if only a relatively small load rests on them. For locking or retaining the locking tabs 8 and 9 in the initial position, even at larger loads, the locking strip 15 is simply moved to the left, ie. across the longitudinal direction of the fuse flaps 8 and 9, whereby the locking bolts 20, 21, 22 and 23 connected to the fuse flaps 8, 9 are engaged by a run-in with a parallel portion of the recesses 16, 17, 18 and 19. in the locking list 15.

On the other hand, if it is to prevent the flaps 8 and 9 from swinging too much upwards at extreme loads, as already mentioned, measures have been taken against such infrequent cases, since the bolt 24 located on the locking list 15 engages in the platform platform 10. recess 25 or sliding under the deck wall 3.

The roll-off lock according to the invention has several advantages in terms of design and working method.