Land vehicles: bodies and tops – Tops – Roll-up covers
Patent
1993-03-10
1994-10-11
Pape, Joseph
Land vehicles: bodies and tops
Tops
Roll-up covers
296100, B60J 1100
Patent
active
053541138
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a platform body covering mechanism comprising a flexible cover and a drum around which the cover can be wound, and a pulling cable wire or similar pulling element by means of which the cover can be pulled over the platform body.
Sand and gravel are usually transported on the platform of a lorry without the platform being covered in any way. In this case it cannot be avoided that during transport some of the sand on the platform flies off the platform with the air current. This artificial sandstorm may, however, be extremely harmful to other vehicles on the road. When a vehicle moving at high speed runs into a cloud of sand, the effect is the same as that of sand blasting. There may be considerable damage to the vehicle's paint surface and windscreen.
To avoid sand dust it has been proposed that the platforms of lorries transporting sand should be covered. The known solutions for covering platform bodies have not, however, been practicable. Problems have arisen e.g. when the surface of the load has been uneven and at a higher level than the edges of the platform. The cover will then be obstructed by the load and cannot be pulled over the load.
The object of the present invention is, therefore, to eliminate the above-mentioned problems and to achieve a novel platform body covering mechanism intended for lorries. It is characteristic of the platform body covering mechanism relating to the invention that in pulling the cover over the platform body, the edge of the cover moving forward over the platform body is arranged to rise at least partially upwards so that the cover can be brought over the platform body even where the load on the platform body is higher than the sides of the platform body.
The invention is described below in detail, with reference to the appended drawings, in which
FIG. 1 shows diagrammatically the platform body relating to the invention and its covering mechanism as seen from the side.
FIG. 2 corresponds to FIG. 1 and shows a second embodiment of the platform body and its covering mechanism.
FIG. 3 shows the platform body shown in FIG. 2 and its covering mechanism as seen from above.
FIG. 4 shows the platform body shown in FIG. 2 as seen from the rear.
FIG. 5 shows the hydraulic diagram of the covering mechanism of the platform body shown in FIG. 2.
FIG. 6 shows the platform body and a third embodiment of the covering mechanism as seen from the side and as a cross section.
FIG. 7 corresponds to FIG. 6 and shows a perspective view of the platform body and the covering mechanism.
FIG. 8 shows the platform body and covering mechanism shown in FIGS. 6 and 7 as seen from above.
FIG. 9 shows a section of FIG. 8 along line IX--IX.
FIG. 10 shows diagrammatically the drum mechanism of the platform body covering mechanism and the hydraulic motors relating to it.
FIG. 11 shows a cross-sectional view of the drum mechanism of the covering mechanism shown in FIG. 10.
FIG. 12 shows the hydraulic diagram of the covering mechanism.
FIG. 13 shows diagrammatically the platform body as seen from the side when the cover is pulled over the load.
FIG. 14 shows the platform body shown in FIG. 13 as seen from the front.
FIG. 1 shows a diagrammatic side view of the platform body 10, over which the cover 11 can be pulled. The cover 11 is wound around the drum 12, which is located at the front of the platform looking in the direction of travel of the vehicle. The covering mechanism also comprises a cable wire 13, to which the edge 14 of the cover 11 is fastened. The cover can be pulled over the platform body by means of the cable wire 13 and rewound onto the drum 12 when it is to be removed from over the platform. The structure is described in greater detail in connection with the following figures.
FIG. 2 shows a second embodiment of the covering mechanism of the platform body 10, in which the cover 11 and the drum 12, around which the cover 11 is wound can be seen in greater detail. The drum 12 located at the front of the platform body 10 is driven by a hydraulic motor 15, which takes its
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