EP0432154A1

EP0432154A1 - Device for fastening and connecting two swivelling parts

Info

Publication number: EP0432154A1
Application number: EP19890901107
Authority: EP
Inventors: Detlev Kunde; Winfried Stachnik
Original assignee: Deere and Co
Current assignee: Deere and Co
Priority date: 1988-09-03
Filing date: 1988-09-03
Publication date: 1991-06-19
Also published as: DE3830071A1; WO1990002482A1

Abstract

Un dispositif (10) pour fixer et relier deux parties pivotantes (12, 14), notamment un coupe-paille et un clapet d'épandage sur une moissonneuse-batteuse, dont l'une peut pivoter autour d'un palier (24) sur un bâti (16) auquel elle peut être reliée par un élément de verrouillage (20), est conçu de sorte que les deux parties pivotantes (12, 14) peuvent être amenées dans leur position de fnctionnement et maintenues dans cette position à l'aide d'un petit nombre de moyens de fixation. A cet effet, la première partie pivotante (12) pivote d'abord dans sa position de fonctionnement dans laquelle elle est maintenue provisoirement par un élément de verrouillage (20). La seconde partie pivotante (14) pivote ensuite à demeure dans la trajectoire de l'autre, et l'élément de verrouillage (20) est relié non pas au bâti (16) mais à l'autre partie pivotante (14) de sorte que les deux parties pivotantes (12, 14) ne peuvent plus s'écarter l'une de l'autre. Le dispositif s'utilise sur des coupe-paille ou similaire montés sur une moissonneuse-batteuse.A device (10) for fixing and connecting two pivoting parts (12, 14), in particular a straw cutter and a spreading valve on a combine harvester, one of which can pivot around a bearing (24) on a frame (16) to which it can be connected by a locking element (20), is designed so that the two pivoting parts (12, 14) can be brought into their operating position and maintained in this position using a small number of fixing means. To this end, the first pivoting part (12) first pivots in its operating position in which it is temporarily held by a locking element (20). The second pivoting part (14) then pivots permanently in the path of the other, and the locking element (20) is connected not to the frame (16) but to the other pivoting part (14) so that the two pivoting parts (12, 14) can no longer deviate from one another. The device is used on straw cutters or the like mounted on a combine harvester.

Description

Device for fixing and connecting two

Swivel parts

The invention relates to a device for fixing and connecting two swivel parts, in particular a chopper and a spreading hood on a combine harvester, at least one of which is pivotable about a bearing on a frame and can be connected to the frame via a locking element.

With such a device (OM-Z 91737 Issue A 6, John Deere Werke Zweibrüσken), a straw chopper pivotably suspended from a straw hood is pivoted from an out-of-service position into an operating position and held by means of an eyebolt. Subsequently, a spreading hood attached to a bracket is also pivoted out of an inoperative position into an operating position and connected to the chopper by means of clamping screws.

The object on which the invention is based is seen in developing a further device for fixing and connecting two swivel parts, in particular a chopper and a spreading hood on a combine harvester, which requires fewer fasteners and also enables simple positioning of the two swivel parts.

From DE-OS-31 19 954 a further device has become known which, by means of an electric motor, pivots a chopper designed as a pivoting part from an inoperative position into an operating position, a handlebar being additionally provided which is attached to the frame and a other swivel part designed spreading hood attacks and pulls the spreading hood around a transverse shaft into an operating position. As soon as the chopper and the spreading hood are in the operating position, a connection between the frame and the chopper is established by means of an eyelet lever. This device is disadvantageous in that the electric motor incurs additional costs and the success of the swiveling movement can be impaired by chaff, straw and the like in the area of the swivel bearings, but this can only be prevented if the operator is in the area of the swivel part - then However, the advantage of remote control using the electric motor is lost.

The object has been achieved according to the invention by the features of patent claim 1, wherein features are listed in the further patent claims which further develop the solution in an advantageous manner.

On the basis of the invention, it is possible to move both pivoting parts by hand into the desired operating position, in particular to pivot them, first of all one of the pivoting parts being provisionally fixed with the locking element. The other swivel part is then swiveled towards the first so that it holds it with the locking element, and finally the locking element is adjusted such that it immovably connects the two swivel parts to one another. The first swivel part can then no longer swivel back into its inoperative position because it is held by the other swivel part, which thus also acts as a locking element. The swivel part or both swivel parts do not have to swivel about a single axis in each case; they can also be pivoted about two axes on links arranged in the manner of a parallelogram. The other swivel part can be held in any position in which it holds the first swivel part against swiveling back. For this purpose it would be possible to use a pretensioned catch or pawl, a friction clutch connecting both, a handle or the like.

If the other swivel part is attached to a swivel bracket, the length of the distance between the swivel bearing can be changed and the grip surface, the force required to move the swivel part can be changed. In addition, the force required to temporarily hold the one pivoting part can thus be kept relatively low.

If the proposed part of the system is used, the pivoting movement of the pivoting part holding the pivoting part can be disassembled in two directions, so that part of the force is directed towards the frame, thereby increasing the contact pressure of the pivoting part on the frame.

In order to achieve a perfectly fitting contact of the swivel part on the frame, it is advantageous to make the contact part adjustable and thus adjustable. It would be sufficient if it were detachable and fixable again after the setting process; but it could also be provided to keep it spring-loaded in a certain position. If a spring is used, vibrations are also reduced at the transition from the frame to the swivel part.

It makes sense to fix the locking part on a shaft, a pin, a bolt or the like at one end so that it is not lost and cannot be installed upside down, excessive vibrations on it are suppressed and it remains in its predetermined position if it is by means of a spring made of metal, plastic or rubber is pressed onto the swivel part or another stationary part. In particular, if the shaft or the like is surrounded by a helical compression spring which presses the locking element against a surface, a clamping effect and the possibility of pivoting can be given at the same time.

A very simple and inexpensive connection is achieved by means of a pin and a recess in the locking element. The spigot can be directly on top of the other Be pivoted part, or is located on the swivel bracket and holds the other swivel part in its operating position.

It makes sense to fix the locking element temporarily at the other end with its recess on a shaft that is normally already present, on a bearing journal or the like of the other swivel part or the swivel lever, which can then be used simultaneously as a holding part.

In the foregoing, reference has always been made to the use of the device according to the invention in a combine harvester; further areas of application would be sorting systems, where sorting elements of different permeability are pivoted into a flow of goods, filling devices, conveying channels and containers which are closed by means of hatches, lids and the like, etc.

In the drawing, an embodiment of the invention described in more detail below is shown. It shows:

1 shows two pivoting parts in an inoperative position and a device for fixing and connecting them, in side view,

Fig. 2 shows the two swivel parts from Figure 1 in an operating position, in side view and

Fig. 3 shows a locking element of the device in plan view.

A device 10 for a first swivel part 12 and a second swivel part 14, which directly or indirectly engage a frame 16, essentially contains a swivel bracket 18, a locking element 20 and an abutment part 22. The device 10 serves to fix the first swivel part 12 to the frame 16 and the second swivel part 14 to the first swivel part 12 and to connect both swivel parts 12, 14 to one another such that they remain in an operating position shown in FIG.

In this exemplary embodiment, the first swiveling part 12 is formed by a straw chopper of a combine harvester, which can be swiveled into the falling stream of straw thrown by its hay-type shakers. For this purpose, a bearing 24 is provided at the end region of the first pivoting part 12 on the left in FIGS. Essentially, the first swivel part 12 is a more or less cuboid housing which can be brought into contact with the undersides of the frame 16.

In this exemplary embodiment, the second swivel part 14 represents a spreading hood which can be attached to the chopper in order to guide crushed straw ejected from it to a certain area on the ground. It also has essentially the shape of a cuboid with a hanging bracket 26. In its inoperative position shown in FIG. 1, it is hung on a rear wall 28 of the frame 16, for which purpose the hanging bracket 26 overlaps a holder 30. To assume its operating position according to FIG. 2, it is pivoted downwards until it comes to rest on the first pivot part 12.

In a combine harvester, the frame 16 corresponds to the straw chute hood with its struts, is open at the bottom and is otherwise closed by side walls 32, the rear wall 28 and a ceiling (not shown).

In a view directed towards the rear wall 28, the swivel bracket 18 takes the form of a - U - whose leg each form a lever arm 34 and its crossbar form a handle bar 35.

The lever arms 34 are held with their end region facing the frame 16 so that they can rotate on a bearing shaft 38 and receive the second swivel part 14 between them, so that this inevitably follows every movement of the swivel bracket 18. The lever arms 34 extend beyond the second pivot part 14 and are bent in their other end region by approximately 90 °, so that in the bent section they run approximately parallel to the bottom 40 of the second pivot part 14 remote from the frame 16.

The handle bar 36 thus also extends parallel and at a short distance from the floor 40.

The bearing shaft 38 extends on both sides beyond the frame 16 and the respective lever arm 34.

The locking element 20 - see also FIG. 3 - is produced from a flat iron, specifically a bore 42, a central recess 44 and an end recess 46 are made on its longitudinal center axis, and it is made a total of four times in opposite directions by approximately 30 ° each cranked up to 45 °.

The bore 42 serves for the movable reception of a screw 50 projecting perpendicularly from a side wall 48 of the first swivel part 12. The screw 50 passes through a bore in the side wall 48 of the swivel part 12 and is fixed with a nut 52. The nut 52 is followed in the axial direction by the locking element 20, a helical compression spring 54 and a locking nut 56. Of course, instead of the screw 50, a bolt could also be welded to the side wall 48, the helical compression spring 54 by one or more disk springs and the securing device - nut 56 to be replaced by a cross pin. In any case, these parts are suitable for pressing the locking element 20 against the side wall 48.

The central recess 44 is also round and can positively receive a pin 58 which is placed on the lever arm 34.

The end recess 46 has a cross section that allows the locking element 20 to be pushed over the bearing shaft 38.

It can be provided that the second swiveling part 14 can be swiveled on the lever arms 34 about a shaft 60 and can be fixed by means of gill means 62. In this case, the pin 58 can simultaneously be part of the shaft 60, which projects beyond the respective lever arm 34.

The contact part 22 has the shape of a wedge with a contact surface 64 which extends on its underside over approximately half its length. It is provided with two elongated holes 66 through which screws (not shown) extend for connection to the side wall 48 of the first pivot part 12. The contact part 22 is therefore rigidly connected to the first pivoting part 12 and extends with its contact surface 64 beyond its rearmost edge. Another contact surface 64 'is located on a ramp 68 which extends slightly above the pin 58 away from the inside of the lever arm 34. As can be seen from FIG. 2, the system part 22 comes to rest on the ramp 68 when both swivel parts 12, 14 assume their operating position.

The following function results from the above. The starting position, as shown in FIG. 1, is assumed. The first pivoting part 12 is pivoted downward about the bearing 24 and the second pivoting part 14 is suspended from the rear wall 28 of the frame 16. If the two pivoting parts 12, 14 are to be pivoted into their operating position shown in FIG. 2, the first pivoting part Part 12 is pivoted about the bearing 24 counterclockwise in the drawing until it strikes the underside of the frame 16 or its side wall 48. The locking element 20 is then pivoted around the screw 50 until the end-side recess 46 is aligned with the bearing shaft 38, so that the locking element 20 can be brought into engagement with the bearing shaft 38. As soon as the positive connection has been established, the first swivel part 12 can no longer swivel downward about the bearing 24, since a connection is made between the frame 16 and the first swivel part 12 via the locking element 20. Next, the second pivoting part 14 is raised slightly by means of the pivoting bracket 18 until the hanging tab 26 is disengaged from the holder 30, and then pivoted downward in a clockwise direction around the bearing shaft 38. Immediately before the second swivel part 14 strikes the first, the contact surface 64 of the contact part 22 meets the contact surface 64 'of the ramp 68 and slides thereon. As a result of the sliding process and the inclination of the contact surfaces 64, 64 ', the contact part 22 and with it the first swivel part 12 is moved towards the bearing shaft 38, ie upwards for firm contact with the side walls 48 of the frame 16. As soon as the swivel bracket 18 or the second swivel part 14 can no longer be moved towards the first swivel part 12 and the contact part 22 rests on the ramp 68, the locking element 20 can be released from the bearing shaft 38 and brought into engagement with the pin 58 on the outside of the lever arm 34 that for which the pin 58 is received in the central recess 44. Due to the helical compression spring 54, the locking element 20 is always in engagement with the - q -

fen 58 and thus the second pivot part 14 held so that both pivot parts 12, 14 remain in their operating position.

In addition to the representation in the drawing, it can be seen that a switching device, for. B. to engage an electromagnetic clutch, is actuated when the second swivel part 14 or the swivel bracket 18 have assumed their operating position. In this way, an operation for. B. the first swivel part 12 forming the chopper is not possible as long as the second swivel part 14 has not yet assumed its operating position.

It can further be provided that a guide plate 70 movably mounted within the frame 16 is pressed into a specific position in which it rests on a rear side 72 of the first pivoting part 12 and, in the case of a chopper, a perfect straw feed into the Chopper ensures. In this case, the guide plate 70 is held between the rear side 72 of the first swivel part 12 and the second swivel part 14 or the swivel bracket 18.

To move the two swivel parts 12, 14 from their operating position into the non-operating position, the procedure is reversed.

Claims

1. Device (10) for fixing and connecting two pivoting parts (12, 14), in particular a chopper and a spreading hood on a combine harvester, at least one of which can be pivoted about a bearing (24) on a frame (16) and via a locking element ( 20) can be connected to the frame (16), characterized in that one of the swivel parts (12, 14) can be swiveled permanently into the movement path of the other, and the locking element (20) instead of the frame (16) with the other Swivel part (14) is connected.

2. Device according to claim 1, characterized in that one of the pivot parts (14) is attached to a pivot bracket (18).

3. Apparatus according to claim 1 or 2, characterized gekennzeich¬ net that the pivoting part (12) or the pivot bracket (18) has a contact part (22) with an inclined contact surface (64) which with a contact surface (64 ') is slidably connectable to the swivel bracket (18) or to the other swivel part (14).

4. The device according to claim 3, characterized in that the contact part (22) relative to the pivoting part carrying it (12) is adjustable.

5. The device according to claim 1, characterized in that the locking element (20) at one end about a on the one pivot part (12) rigidly fastened screw (54) is pivotable.

6. The device according to claim 5, characterized in that the locking element (20) is bent several times, and at one end spring-loaded on the screw (54) pivotally mounted.

7. The device according to one or more of the preceding claims, characterized in that the locking element (20) at the other end with a pin (58) on the other swivel part (14) or the swivel bracket (18) can be brought into positive engagement.

8. The device according to one or more of the preceding claims, characterized in that the locking element (20) at the other end with a bearing shaft (38) of the swivel bracket (18) or the other swivel part (14) can be brought into a positive connection.