TARPAULIN STRUCTURE

Abstract

The invention relates to a tarpaulin superstructure for a movable substructure, such as a truck, a trailer, a semitrailer, a railway wagon, a dump truck or a container, comprising a top frame to which a tarpaulin made of weather-resistant material can be attached, wherein the top frame comprises a plurality of struts which can be moved along at least one guide, wherein the end of the top frame comprises an end runner which can be raised to open the superstructure and lowered to close the superstructure. A tarpaulin superstructure where the end runner is not lifted by the airstream is provided according to the invention in that an air deflection part is arranged at an end of the end runner, by means of which air deflection part the airstream is converted into a force in the closing direction of the end runner.

Claims

1-25. (canceled)

26. A tarpaulin superstructure for a movable substructure, such as a truck, a trailer, a semitrailer, a railway wagon, a dump truck or a container, comprising a top frame to which a tarpaulin made of weather-resistant material can be attached, wherein the top frame comprises a plurality of struts which can be moved along at least one guide, wherein the end of the top frame comprises an end runner which can be raised to open the superstructure and lowered to close the superstructure, and wherein an air deflection part is arranged at an end of the end runner, by means of which air deflection part an airstream is converted into a force in the closing direction of the end runner.

27. The tarpaulin superstructure of claim 26, wherein the air deflection part is arranged on the outside of the tarpaulin.

28. The tarpaulin superstructure of claim 26, wherein the air deflection part is connected to the end runner.

29. The tarpaulin superstructure of claim 26, wherein the air deflection part comprises a connecting portion and an air guiding portion, and wherein the air guiding portion protrudes upward over the tarpaulin.

30. The tarpaulin superstructure of claim 29, wherein the air guiding portion is folded away with respect to the connecting portion.

31. The tarpaulin superstructure of claim 29, wherein the air guiding portion comprises at least one of an opening and a recess.

32. The tarpaulin superstructure of claim 31, wherein at least one opening contains a logo.

33. The tarpaulin superstructure of claim 29, wherein the air guiding portion makes up only part of a width of the end runner.

34. The tarpaulin superstructure of claim 26, wherein the air deflection part comprises a supernatant over the superstructure which, measured in the projection onto a vertical plane, is not exceeding 50 mm.

35. The tarpaulin superstructure of claim 26, wherein the air deflection part generates a contact force of between 30 N and 300 N, preferably between 50 N and 150 N, on the end runner in the closing direction at a driving speed of 50 km/h.

36. The tarpaulin superstructure of claim 26, wherein the end runner is articulated on the top frame.

37. The tarpaulin superstructure of claim 26, wherein the top frame is motor-driven.

38. The tarpaulin superstructure of claim 26, wherein the air deflection part is arranged at a distal end of the end runner.

39. The tarpaulin superstructure of claim 26, wherein a vertical component of the air deflection part opposes an airstream and thus achieves a downward contact pressure or contact force on the end runner.

40. The tarpaulin superstructure of claim 26, wherein the air deflection part is designed as one of a steel part and a plastics part.

41. A movable substructure, such as a truck, a trailer, a semitrailer, a railway wagon, a dump truck or a container, comprising a tarpaulin superstructure having a top frame to which a tarpaulin made of weather-resistant material can be attached, wherein the end of the top frame comprises an end runner which can be raised to open the superstructure and lowered to close the superstructure, and wherein an air deflection part is arranged at an end of the end runner, such that the air deflection part converts an airstream generated by a driving movement of the substructure into a force in the closing direction of the end runner.

42. The movable substructure of claim 41, wherein the tarpaulin superstructure forms one of a sliding roof and a tipper roof.

43. The movable superstructure of claim 41, wherein the air deflection part makes up only part of a width of the end runner.

44. The movable substructure of claim 41, wherein the top frame comprises a plurality of struts which can be moved along at least one guide arranged on the substructure, wherein the end runner comprises two links hingedly attached in a respective joint to one of the struts, wherein the two levers are both connected to a rear cross member, and wherein the two levers and the rear cross member are free to pivot around the joints during a travel of the substructure.

45. Use of an air deflection part attached to an end runner of a tarpaulin superstructure to secure the end runner against unintentional rattling or lifting in an airstream.

Description

DESCRIPTION OF THE DRAWINGS

[0029] The invention will be explained below with reference to the accompanying drawings on the basis of a preferred embodiment.

[0030] FIG. 1 is a perspective view of a tarpaulin superstructure according to the invention from above.

[0031] FIG. 2 is a perspective view of the tarpaulin superstructure from FIG. 1 from the rear.

DETAILED DESCRIPTION

[0032] The following detailed description and appended drawings describe and illustrate various embodiments of the invention. The description and drawings serve to enable one skilled in the art to make and use the invention, and are not intended to limit the scope of the invention in any manner.

[0033] The tarpaulin superstructure 10 shown in FIG. 1 and FIG. 2 is built over a substructure 20, in the present case designed as a dump-truck container, and forms a sliding roof 12 which can be opened by actuation from one side.

[0034] The details of the substructure 20 are not shown further, but the substructure has a pivoting door on its right-hand side in FIG. 1, which allows the load to be tipped.

[0035] A top frame 30 can be moved on a guide 22 of the substructure 20 and comprises a plurality of struts 32 which are designed in an inverted U-shape and have carriages (not shown in detail) at the ends that can be moved along the guide 22.

[0036] An end runner 40 is connected in a joint 42 to the rearmost pair of carriages in the direction of travel, which pair is connected via a strut 32, and the end runner 40 has a link 44 on each side of the substructure 20 which, together with a rear cross member 46, forms a U-shaped end runner 40 which can be pivoted about the articulation 42.

[0037] A tarpaulin 50 which covers the top frame 30 and can be moved together with the top frame 30 is connected to the struts 32 and to the cross member 46. At its end remote from the cross member 46, the link 44 has a lever arm 44a which cooperates with a protrusion provided on the substructure 20 and causes the end runner to pivot about the articulation 42 when the top 12 is opened to expose the upper opening of the substructure 20.

[0038] The tarpaulin 50 is placed over the end runner 40 and in particular also covers the cross member 46. On the outside of the tarpaulin 50, an air deflection part 60 is provided which comprises a connecting portion 62 that corresponds approximately to the height of the cross member 46 and an air guiding portion 64 projecting at an angle therefrom, which in this case are made of stainless steel. However, it is possible to form the air deflection part from plastics material or aluminum instead.

[0039] The connecting portion 62 is connected to the cross member 46 of the end runner 40 via rivets 66 in such a way that the tarpaulin 50 is held between these two parts 62, 46. This ensures that the tarpaulin 50 is reliably connected to the top frame 30 and in particular to the end runner 40 and here in turn to the cross member 46.

[0040] The air guiding portion 64 has an approximately trapezoidal contour which has rounded edges in order to avoid cutting into the tarpaulin 50 when the top frame 30 is folded up as it is opened. The air guiding portion 64 protrudes vertically slightly above the tarpaulin 50, so that a dynamic pressure of the airstream results in a force component in a vertically downward direction on the end runner 40 around the articulation 42. One or more air openings 64a are provided in the air guiding portion 64, and can also form the manufacturer's logo at the same time. This advantageously reduces the air resistance of the air guiding portion.

[0041] It is possible to design the air guiding portion 64 as a coplanar extension of the connecting portion 62, since the connecting portion 62 is oriented approximately vertically. However, for aesthetic reasons and because of the better dynamic behavior at different speeds, the air guiding portion is angled at an angle of approximately 135° with respect to the connecting portion.

[0042] It is possible to provide a plurality of air guiding portions on the air deflection part 60 which are spaced apart from one another, and as a result to provide recesses in the air guiding portion 64.

[0043] If the substructure 20 equipped with the tarpaulin superstructure 10 is moved by a vehicle, the end runner 40 points to the rear in the direction of travel. The airstream, which falls a little way over the tarpaulin superstructure 10 in the direction of the cross member 46, tends to suck the end runner 40 upward. The air deflection part 60 and in particular its air guiding portion 64 creates a dynamic pressure which, depending on the speed, directs a force component of 0.6 to 4 times the speed in km/h downward as a force in N and thus prevents the end runner 40 from being lifted. With a factor of 1.2 and a speed of 50 km/h, this results in a closing force of 60 N, for example. This advantageously makes it possible to dispense with locking the end runner 40 to the substructure 20 or to the top frame 30. This is particularly advantageous if the top frame 30 is equipped with a motor drive which, in the case of separate manual locking, is laborious and prone to failure.

[0044] The invention has been explained above on the basis of an embodiment in which the air guide deflection part 60 extends practically over the entire width of the cross member 46 of the end runner 40. It has to be understood that the air deflection part may also make up only a part, for example a central region, of the cross member 46 or that an air guiding portion 64 is provided over only part of the width of the cross member 46.

[0045] The invention has been explained above on the basis of an embodiment in which the substructure 20 is a dump truck, in which it is particularly advantageous for the end runner 40 to lift off from the substructure 20 when the substructure 20 is pivoted upward by up to 90°. It has to be understood that an air deflection part 60 can also be connected to end runners which are built over non-pivotable substructures, such as on the sliding roof of a truck, semi-trailer, trailer or container.

[0046] The invention has been described above with reference to a movable substructure which in particular provides for an internal combustion engine and/or a vehicle driver. It has to be understood that the movable substructure can also have an electric motor and/or can be designed as a driverless or autonomous vehicle.

[0047] While certain representative embodiments and details have been shown for purposes of illustrating the invention, it will be apparent to those skilled in the art that various changes may be made without departing from the scope of the disclosure, which is further described in the following appended claims.