EP1226855B1 - Rotary swather trailer toy - Google Patents

Abstract

A toy or model of an agricultural hay/ straw turner or rotary rake, is made of injection moulded plastics material, and comprises a tractor-towable, trailer-mounted frame (1), constructed on a chassis (4). The unit has at least one rake assembly (7,11) with multiple, arm-mounted rakes (13), connected by an out-rigger (8) to the frame (1), and rotatable about a vertical axis. Friction drives (18), for the rotary rake assemblies, are also mounted on the out-riggers, and are turned by 'road wheels' (17) rolling along the ground. The out-riggers can be 'folded' about the horizontal longitudinal axis of the trailer, when not in use, to facilitate transportation of the unit.

Description

The invention relates to a toy rotary swather trailer, in particular made of plastic injection molding material.

In the design and construction of motorless toy vehicles is for the lifelike character of the vehicle on the one hand and the increase in play value on the other hand, the replication of as many functions of the original in the foreground. While in motorized vehicles, the drive of such functional parts due to the availability of various, even extremely miniaturized engines and in particular electric motors no major problems, the implementation of moving functional parts in motorless toy vehicles is problematic.

Known here is the derivation of the drive from the rolling motion of the vehicle wheels, see e.g. EP-A-1 060 773. However, in the toy rotary rake trailer according to the application, this is practically unrealizable, since such a vehicle is generally equipped with exposed wheels that are far away from the actual driven parts.

• einen an ein Zugfahrzeug anhängbaren Trägerrahmen,
• ein Fahrgestell, auf dem der Trägerrahmen angeordnet ist,
• mindestens einen Schwaderkreisel, der aufweist
  • = einen Ausleger zur Anbindung an den Trägerrahmen,
  • = einen am Ausleger um eine vertikale Achse drehbar gelagerten Rotor mit einer Vielzahl von radialen Armen und an deren Enden angebrachten Förderrechen, sowie
  • = einen am Ausleger gelagerten Reibradantrieb mit auf dem Fahruntergrund abrollenden Reibrad für den Rotor.

To solve this problem, the invention proposes a toy rotary swather trailer, in particular of plastic spray material, which comprises

• a carrier frame attachable to a towing vehicle,
• a chassis on which the support frame is arranged,
• at least one swather gyroscope having
  • a boom for connection to the support frame,
  • = a rotatably mounted on the boom about a vertical axis rotor with a plurality of radial arms and attached to the ends conveyor rake, and
  • = a mounted on the boom friction drive with rolling on the driving surface friction wheel for the rotor.

The essence of the innovation lies in the integration of the drive for locally separate from the chassis rotary swather rotors in the rotors themselves by a friction wheel drive is arranged on the boom.

By provided according to claim 2 pivotable articulation of the boom or about a horizontal axis on the support frame ensures that the friction wheel drive is always in contact with the ground even on uneven ground, so that an uninterrupted rotational movement of the rotor in the process of the trailer takes place.

The claims 3 to 6 characterize preferred developments of the rotary swather trailer with respect to a further functional simulation, namely the folding ability of the boom from its operating position into a transport position. The preferably provided telescopic guide rod fulfills a typical double function. On the one hand, it is relatively true to the original on such vehicles usually existing hydraulic drives for the transfer of Schwaderkreisels from the operating in the folded transport position after. On the other hand, a lock for the swather gyro in the transport position can be elegantly and unobtrusively integrated into the telescopic guide rod. Is to namely provided a locking device between telescopic part and guide part of the telescopic guide rod.

Further preferred embodiments of the invention relate to the arrangement of the friction wheel within a rotary bearing head on the boom. It is further provided that the wheels provided for the original wheels to support the swath gyroscope are arranged in a displaceably mounted in the vertical direction Radlagerschemel to the friction wheel around. These idler wheels have, on the one hand, the purpose of getting close to the model as lifelike as possible. By deviating from the original, vertically displaceable bearing this Mitläuferräder in a wheel bearing stool ensures that the arranged in the rotary head friction wheel is always in good contact with the ground and is not lifted by a possible supporting the idler wheels. Finally, the idler wheels hide with their wheel bearing stool lying within its outline friction wheel drive, so that this hardly noticeable.

• Fig. 1 eine perspektivische Darstellung eines Doppelkreiselschwaders,
• Fig. 2 dessen Draufsicht,
• Fig. 3 dessen Seitenansicht,
• Fig. 4 dessen Ansicht von hinten, und
• Fig. 5 einen Vertikalschnitt quer zur Fahrtrichtung entlang der Schnittlinie A-A nach Fig. 2.

Further features, details and advantages of the invention will become apparent from the following description in which an embodiment with reference to the accompanying drawings is explained in more detail. Show it:

• 1 is a perspective view of a Doppelkreiselschwaders,
• 2 whose plan view,
• 3 whose side view,
• Fig. 4 whose view from the rear, and
• 5 is a vertical section transverse to the direction of travel along the section line AA of FIG .. 2

As is clear in particular from FIG. 1, the load-bearing element of the rotary swather trailer is a substantially beam-shaped support frame 1, which extends in the direction of travel F. At the front end of a designated as a whole with 2 trailer hitch is formed. Further, on the underside of the clutch 2, an upwardly foldable, shown in the drawings in its support position support 3 is mounted.

At the rear end of the support frame 1 this carries a chassis 4, which has a transverse bar 5 and at its two ends in each case rotatably mounted wheels 6.

Approximately centered relative to the length of the support frame on either side of a designated as a whole with 7, 7 'swather gyro attached. In the following description, one of these two gyros will be described in detail and provided with reference numerals in the figures. The swather gyro 7 'located on the other side is mirror-symmetrical to the vehicle longitudinal axis L of the trailer. He therefore needs no own discussion and - to avoid unnecessary confusion - no repeated listing of reference numerals in the drawing.

The swather gyro 7 has as a supporting part for Anbingung to the support frame 1 an arm-shaped arm 8, which is articulated in a pivot bearing 9 on the support frame 1. Whose pivot axis is parallel to the direction F. At the free end of the boom 8, a rotor 11 is rotatably mounted about a vertical axis 10, which has a plurality of substantially radially projecting arms 12. At the ends, in turn, the individual conveyor rakes 13 are fixed, with which on a meadow spread, dried crop is mechanically aligned together to elongated pile.

As is clear in particular from the sectional view of FIG. 5, the rotary bearing of the rotor 11 at the free end of the boom 8 as a whole designated 14 rotary bearing head is provided, approximately centrally about its height, the rotor 11 with a hub 15 runs. At the lower end of the rotary bearing head 14, a bearing lug 16 is integrally formed on the outside, in which the friction wheel 17 of a frictional wheel drive designated as a whole by 18 rotatably supported about an axis extending horizontally and transversely to the direction of travel F. At the zenith of the circumference of the friction wheel 17, this is with the underside of the hub 15 via a not shown in detail, fine tooth profile in engagement. In order for a rotational movement of the friction wheel 17 is converted by the rolling on the driving surface B in a rotational movement about the vertical axis 10 of the rotor 11.

The lower end of the rotary bearing head 14 is further provided with a substantially cuboidal bearing frame 19, on which a triangular in the outer contour of the Radlagerschemel 20 in the vertical direction V is slidably mounted. In the triangular in Fig. Radischenschemel 20 are in The corner areas respectively idler wheels 21 rotatably mounted, so that the wheel bearing stool 20 with a ride of the trailer on the idler wheels 21 simply rolls. Due to its vertical displacement, however, it can not exert any supporting forces on the rotary bearing head 14 and thus the boom 8, so that the friction wheel 17 rolls reliably on the ground B along and exerts the actual supporting function for the swath gyro 7. The Radlagerschemel 20 with its three Mitläuferrädem 21 is therefore only a "dummy" and serves the most faithful replica of the original by the toy model.

As further apparent in particular from FIG. 5, the two swather gyros 7 are each flanked above their arms 8 by a telescopic guide rod designated as a whole by 22. This consists of an outer guide member 23 which is pivotally mounted on an upwardly arranged on the support frame 1 bearing cap 24 about a direction parallel to the direction of travel F horizontal axis H. In the guide member 23, a telescopic part 25 is slidably guided in the boom longitudinal direction, which is connected with its free end in front of the free end of the boom 8 via a pivot joint 26.

By raising the two swath gyro 7 these can be brought from the operating position shown in the drawings in a folded transport position. During this folding up, the telescopic part 25 of the telescopic guide rod slides into the guide part 23. In order to fix the swath gyro 7 in the transport position, which is folded upwards by about 90 °, a latching device 27 is provided, which passes through a recess 28 in the telescopic part 25 and a corresponding one Detent projection 29 is formed on the top of the telescopic part 25. To lock the swather gyro 7 snaps the locking projection 29 into the recess 28 a. In contrast, in the operating position no determination of the altitude of the swather gyros 7 is provided, but the telescopic part 25 slides freely in the guide member 23, so that the friction wheel 17 constantly rests with the weight pressure of the entire boom construction fed on the driving surface B.

Finally, two parallel to the support frame 1 extending support struts 30 at the ends of the boom 8 to mention, at the ends in turn a collapsible hinges 31 collapsible, circumferential support frame 32 is mounted above the rotors 11. On this horizontal support frame 32 hang aprons 33 (see Fig. 1), which cause a cover of the working range of the rotors (11).

Claims (10)

1. A rotary swath trailer toy, in particular of injection-molding plastic material, comprising

   - a supporting frame (1) which is attachable to a tractor;

   - a chassis (4) on which the supporting frame (1) is disposed;

   - at least one rotary swath (7), which comprises

   -- a cantilever arm (8) for connection to the supporting frame (1),

   -- a rotor (11) which is mounted on the cantilever arm (8) rotatably about a vertical axis (10), having a plurality of vertical arms (12) and rake conveyors (13) mounted on the ends thereof, and

   -- a frictional-wheel drive (18) which is mounted on the cantilever arm (8), having a frictional wheel (17) for the rotor (11), the frictional wheel (17) rolling on the ground (B).
2. A rotary swath trailer according to claim 1, characterized in that the cantilever arm (8) is articulated to the supporting frame (1) for pivoting about a horizontal axis (H).
3. A rotary swath trailer according to claims 2, characterized in that the cantilever arm (8) is pivotable between a lowered position of operation and an elevated position of transport.
4. A rotary swath trailer according to claim 3, characterized in that the cantilever arm (8) is lockable in its position of transport.
5. A rotary swath trailer according to one of claims 1 to 4, characterized in that the cantilever arm (8) is flanked by a telescopic guide rod (22) which is linked thereto.
6. A rotary swath trailer according to claim 4 and 5, characterized in that a locking mechanism (27) is provided between the telescoping element (25) and the guide element (23) of the telescopic guide rod (22), locking the cantilever arm (8) in the position of transport.
7. A rotary swath trailer according to one of claims 1 to 6, characterized in that a rotary bearing head (14) is mounted on the free end of the cantilever arm (8), on which the rotor (11) and in which the frictional wheel (17) are rotarily mounted, interengaging such that the rolling motion of the frictional wheel (17) is convertible into a motion of rotation of the rotor (11).
8. A rotary swath trailer according to claim 7, characterized in that a wheel bearing bolster (20) is mounted on the rotary bearing head (14) for displacement in the vertical direction (V), with at least one entrained wheel (21) being rotarily mounted thereon.
9. A rotary swath trailer according to claim 8, characterized in that the wheel bearing bolster (20), in a plan view, has an approximately triangular contour that surrounds the frictional wheel (17), an entrained wheel (21) being disposed in the respective corner areas of the wheel bearing bolster (20).
10. A rotary swath trailer according to one of claims 1 to 9, characterized in that two rotary swaths (7) are articulated to the supporting frame in symmetry to the longitudinal axis (L) of the vehicle.

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