DE8413456U1 - MOWING MACHINE - Google Patents

Description

CLAAS SAULGAU GMBH '.. ".." , J. ,, "', SauEgau, April 26, 1984 S au 1 gau
- G 1394 -

Mower

The innovation relates to a mower to be attached to the three-point linkage of a tractor. Mowers of this type, For example, according to DE-AS 12 95 908, an outer frame part, an inner frame part and a bracket-like Have the trestle in the working position of the mower with approximately horizontal gelonk bolts in the direction of travel interconnected; are. Furthermore, with such mowers a spring is provided which relieves the load on the inner frame part. The inner frame part carries a pivoted one Lever, on the one hand the spring engages and on the other hand an inner and an outer coupling rod, which with Slits are provided in order, in the working position, to move between the trestle, which is used to adapt to the ground and the inner frame part as well as between the inner and outer frame part.

In the transport position or when dismantling the mower from Tractor must, however, be restricted to the extent that the mobility of the parts mentioned that the inner frame part including the trestle is not lowered so far that it is later no longer simply attached to the three-point linkage of the tractor can be. For this purpose, known mowers have two locking devices that act independently of one another which on the one hand blocks the action of the spring and on the other hand the mobility between the inner and outer frame part can be restricted.

The innovation is supposed to be the locking and unlocking make these machine parts easier and thus also make them more reliable. For this purpose it is proposed according to the present year, that with a mower of the type described

both the effectiveness of the spring and the mobility of one or both coupling rods by means of a single one Locking device are restricted or blocked can.

Such a locking device can, for example, from a locking bolt mounted on the inner frame so that it can be moved longitudinally, which is inserted into a recess in the lever can penetrate, whereby it restricts this speed in its movement and in this position the end face touches the inner coupling rod, whereby it frictionally engages the inner coupling rod in the movement after a row hinders.

In order to inevitably have freedom of movement in the working position To ensure machine parts, the locking device can be renewed when pivoting the mower from the transport to the working position are automatically ineffective.

Fig. 1 shows a mower according to the innovation in a view from behind in the working position,

2 shows a detail of the locking device according to the innovation (unlocked) in a transverse view of Figs. 1 and

3 shows a section of the locking device in a view as in Fig. 1, but in the locked position.

The trestle (1) of a mower consists of a support bracket (2) and a tubular one that is firmly connected to it Sleeve (3). The sleeve (3) is penetrated by an angular support axis (4), which has a vertical leg (5) and a horizontal leg (6).

An inner frame part (7) has tabs (8) at one end which, together with the horizontal leg (6), form a joint form. At the other end of the inner frame part (7) there is another joint (9) that connects to a represents outer frame part (10). On the outer frame part (10) two mowing drums (11) are mounted and in a known manner (not shown) driven by the tractor's PTO shaft. Furthermore, there is a bearing (12) that is penetrated by a horizontal bolt (13).

A horizontal pivot axis (14) firmly connected to the inner frame part (7) serves as a bearing for one of two plates (1.5 ″, 15 ″) built-up lever (15). On this lever (15) acts a tension spring (16), which is attached at its other end with a on the vertical leg (5) of the support axis (4) Head piece (17) is connected. On the head piece (17) an inner coupling rod (18) is also mounted, which in the Near its other end has an elongated hole (19) and that between the plates (15 ', 15' ') of the lever (15) is longitudinally movable is displaceable to the extent that this is a firmly connected to the plates (15 ', 15 ") penetrating the elongated hole (19) Bolt (20) allows. At the free end of the lever (15) an outer coupling rod (22) is articulated with a bolt (21), which has an elongated hole (23) at the other end through which the horizontal bolt (13) on the outer frame part (10) passes will.

Hit the inner frame part (7) are firmly connected tabs (24), which are penetrated by a longitudinally displaceable locking bolt (25). In the locked position, this locking bolt (25) in recesses (26) of the lever (15). In this position, the face of the lies between the two plates (15 ', 15') sliding inner coupling rod (18) against the locking bolt (25). The inner one Coupling rod (18) is thereby at a further movement in the direction of the elongated hole (19) (in Fig. 1 to the bottom right) prevented.

Ά J-

In the working position shown in Fig. 1, the locking bolt is (25) in an unlocked position according to Fig. 2. In this position, the bolt (20) of the lever (15) and the bolt (13) in the outer frame part (10) in the associated Long holes (19, 23) of the inner coupling rod (18) or the outer coupling rod (22) move so far that the inner (7) and outer frame parts (10) can move up and down to adapt to uneven terrain. The tension spring (16), which acts on the lever (15), relieves both the inner (7) and the outer Frame part (10).

When the mower is brought into transport position or parked is to be, the bolt (25) is moved longitudinally in the direction of arrow A (Fig. 2). He then enforces that Recesses (26) of the lever (15) and only allows small pivoting movements of the lever (15) about the pivot axis (14) to. As a result, the outer coupling rod (22) and thus the outer frame part (10) can only move slightly. Under the action of the tension spring (16), the end face the inner coupling rod (18) pressed against the bolt (25) and thus the free mobility of the inner frame part (7) and the trestle (1) lifted against each other. The whole machine frame becomes a stable structure.

By not shown, but easy to realize Linkage, tension members or the like, the longitudinally displaceable bolt (25) can thus be connected to the headstock (1) that he is in the working position of the mower (Fig. 1) automatically in an Entriegelstellurig according to Fig. 2 and in the transport or parking position of the mower in a Lock position (Fig. 3) is performed.

Claims (3)

Protection claims 1. Mower with an articulated inner and outer frame part, a trestle also articulated to the inner frame part for the attachment of the mower to the three-point linkage of a tractor and a lever pivotably mounted on the inner frame part on which an inner and outer coupling rod or attack the like, as well as a spring, characterized in that both the effectiveness of the spring (16) and the mobility of one or both coupling rods (18, 22) can be restricted or blocked by means of a single locking device (24, 25, 26) . 2. Mower according to claim 1, characterized in that the locking device (24, 25, 26) consists of a locking bolt mounted on the inner frame part (7) so as to be longitudinally displaceable. 2 5), which can be inserted into a recess (26) in the lever (15), which restricts its freedom of movement and, in the inserted position, touches the end face of the inner coupling rod (18), thereby positively influencing the movement in one direction prevents. 3. Mower according to claims 1 or 2, characterized in that the locking device (24, 25, 26) when pivoting the mower from the transport to the working position and vice versa via linkage, tension members or the like between the headstock (1) and locking bolt (25 ) can be automatically disabled or brought into effect.