DE8804590U1 - Forage harvesters for agricultural crops - Google Patents

Description

f &Igr;&igr;'* . I ::,:.«'."!!nafseWinkei, 30.03.i988

CLAAS OHG, PO Box 11 40» 4834 Harsewinkel

Forage harvester for agricultural Harvest

The innovation concerns a field chopper for agricultural crops with a crop receiving device provided at its front end, a chopping unit and a driven conditioning roller pair associated with it, whereby the rollers are each formed from a cylindrical casing, possibly toothed on the outer circumference, and end covers with associated bearing pins.

In previously known forage harvesters, the end covers with bearing pins are welded to the front of the roller shell. On the one hand, this means that if the roller shell wears out, the entire roller has to be replaced. On the other hand, the roller shell warped due to the welding of the end cover so that reworking by grinding the toothed and hardened roller shell was necessary in order to achieve a uniform conditioning effect over the entire length of the roller. Since the regrinding process removed some of the hardened surfaces, reworked rollers were subject to high levels of wear. The present innovation is therefore based on the problem of

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to create a field chopper of the type described in more detail above, in which the rollers do not need to be replaced as a whole when they wear out. This is achieved in accordance with the innovation in that the roller shell and the two end covers are clamped together in a detachable and centering manner by a pull rod that passes through the center of the covers and the associated bearing pins.

In the following, the innovation will be explained in more detail using an example of implementation and several figures that represent it schematically.* This shows:

figure 1 a forage harvester in side view,

Figure 2 shows the conditioning part of the forage harvester shown in Figure 1 in an enlarged view

Figure 3 shows a mounted squeezing roller of the conditioning part in section and

Figure 4 shows another view of a conditioning roller, in exploded view.

Hit 1 is a self-propelled forage harvester, whose front intake elements 2 feed the chopped material to a chopping drum 3, which interacts with a stationary counter knife. From there, the chopped material reaches a discharge chute 4, where it is shredded by conditioning rollers 5 and 6 and then accelerated. With the interposition of a post-acceleration device and a rotating ring 8, a discharge chute 9 is connected, through which the chopped material

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for example, is conveyed to an accompanying vehicle. The conditioning rollers 5 and 6 according to the embodiment have an externally toothed cylindrical casing 10, whereby the casing 10 has inner ring collars 11 and 12 on the front side. The end covers are fitted into these collars 11 and 12.

13 and 14 can be fitted, which with bearing pin 15

And 16. One of the two bearing journals, namely journal 15, has a snug fit 17 onto which the bearing 18 is pressed, which projects slightly beyond the seat 17. The other bearing journal 16 also has a snug fit 19 with a pressed-on bearing 20, against which a spacer ring 21 rests, which projects outward beyond the seat 19. A drive disk 22 rests on the spacer ring 21, which is wedged with a projection 23 of the journal 16 and projects outward beyond it. As can be clearly seen from Figure 3, all of these components are connected by a single pull rod 30, which is inserted into central holes 24, 25 in the end covers 13 and

14 is centered, held together to form a structural unit. The brackets 26 and 27 enclosing the layers 18 and 20 can then be screwed to the support frame 29 of the ejection chute 4 using screws 28. When a roller shell 5, 6 wears out, it is no longer necessary, as was previously the case, to replace the entire roller according to this innovation. Instead, only the wearing part itself, i.e. the shell 10, is replaced. The end covers and the associated bearing pins as well as the associated bearings are retained for reuse. This results in considerable savings.

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)t C · · · &bgr; ·· ·« r ti t sea Reference &iacgr; chert 1 iste· 1 Forage harvester &igr; Intake organs 3 Chipping drum 4 Ejection chute 5 Conditioning roller 6 Conditioning roller 7 Post-accelerator 8th Slewing ring 9 Discharge spout 10 Coat 11 Ring collar 12 Ring collar 13 End cap 14 End cap 15 Bearing journal 16 Bearing journal 17 Fit 18 camp 19 Fit 20 camp 21 Spacer ring 22 Drive pulley 23 Approach 24 drilling 25 drilling 26 Consoles 27 Consoles 28 Screws 19 - Support frame 30 - pull bar

Claims (1)

, 30.03.1988 St-cd PROTECTION CLAIMS 1. Field chopper for agricultural crops with a crop receiving device provided at its front end, a chopping unit and a driven pair of conditioning rollers associated with it, whereby the conditioning rollers are each formed from a cylindrical casing, possibly toothed on the outer circumference, and end covers with associated bearing pins. characterized in that the roller shell (10) and the two end covers (13, 14) are releasably and centrally clamped together by a pull rod (30) which passes through the center of the covers (13, 14) and the associated bearing pins (15, 16). Field chopper according to claim 1, characterized in that the roller casing (10) has on its end faces inner ring collars (11, 12) into which the end covers (13, 14) can be fitted in a centering manner. Field chopper according to claims 1 - 2, characterized in that bearings (18, 20) are placed on the bearing pins (15, 16) of the end cover (13, 14) and that the bearing pin (16) carries a drive disk (22) next to the bearing (20), all components being connected to one another solely by the pull rod (30). I · I 4. Field chopper according to claims 1 - 3, characterized in that the drawbar (30) is provided with threaded nuts at both ends. I Il «I I IMI # i * * I I I t 1 f I &iacgr;# · &iacgr; I It &igr; Iff I tf i Il * it Il I Il II i I f · * i