DE9205617U1 - Inclined conveyor on a harvester - Google Patents

Description

My file: C 20/67

Inclined conveyor on a harvester

The invention relates to an inclined conveyor on a self-propelled harvesting machine, which has several conveyor chains in an intake channel that run continuously around chain wheels at a distance from one another, and in which a winding protection device is arranged around at least one of the chain wheel shafts between the chain wheels and the channel side walls.

When the grass clippings are conveyed through the intake channel by the conveyor chains, a pressure load is exerted on one or both shafts of the chain conveyor, which can lead to deformation and bending of the shafts.

The object of the invention is to improve the inclined conveyor constructed according to the type mentioned at the beginning in such a way that at least the pressure-loaded shaft is protected against deformation and bending in a safe manner by simple means when subjected to pressure, and that no impairment (necessary modification) of the winding guards occurs for this shaft stabilization.

This object is achieved according to the invention by the characterizing features of claim 1; the subsequent subclaims contain design features which represent advantageous and beneficial further developments of the solution to the problem.

In the inclined conveyor according to the invention, the said shaft or both of its shafts are supported by at least one pair of rollers against deformation and bending in the event of force or pressure loads, so that they maintain a stable and secure bearing.

This pair of rollers is advantageously arranged within a winding protection, is completely surrounded and protected by the winding protection on the outside and does not affect the winding protection, i.e. no changes to the winding protection need to be made.

The pair of rollers can be easily mounted on the crossbar of the intake channel using a bracket and can be continuously adjusted to the shaft.

This shaft support can be produced cost-effectively, has a long-lasting effect and results in increased utility value.

If repairs are required, all that is needed is to remove the entire winding protection and then this shaft support can be repaired quickly at low cost.

It is within the scope of the invention to arrange two or more pairs of rollers for shaft support within a respective winding protection in the case of long shafts.

The drawings show an embodiment of the invention, which is explained in more detail below. It shows:

Fig. 1 is a schematic side view of a conveyor belt arranged between the mowing attachment and the threshing unit of a self-propelled harvesting machine,

Fig. 2 a plan view in partial section of a shaft of the inclined conveyor with winding protection and shaft support,

Fig. 3 shows a cross section through the shaft support according to section line I-I in Fig. 2.

The inclined conveyor (SF) on a harvesting machine is arranged between a mowing attachment (MV) and a threshing unit (DW) formed from a threshing drum (1) and a threshing concave (2), as shown schematically in Fig. 1.

This inclined conveyor (SF) has an intake channel (3) that slopes from the mowing attachment (MV) to the threshing unit (DW), in which two shafts (4) arranged at a distance from one another in the conveying direction (A) are rotatably mounted, on each of which several, preferably four, chain wheels (5) are arranged at a distance from one another, around which the conveyor chains (6) with drivers rotate endlessly.

A winding protection device (7) is arranged around at least one shaft (4) on the threshing unit side, or around both shafts (4), between the adjacent sprockets (5) and between the end sprockets (5) and the side wall (3a) of the intake channel (3), which is fastened to a crossbar (8) of the intake channel (3).

This cross beam (8) forms with longitudinal beams (9) a frame that carries and supports the intake channel (3).

The two shafts (4) are rotatably mounted by means of bearings in the channel side walls (3a) and one shaft (4) has a drive part (10) outside the intake channel (3) for connection to a drive for the chain conveyor (5, 6).

At least the shaft (4) adjacent to the threshing mechanism (DW) is supported against deflection under pressure load during the conveyance of the crop by at least one pair of rollers (RP) arranged within the winding protection (7) and held on the crossbar (8) of the intake channel (3).

The two support rollers (11) of the roller pair (RP) run with their axes of rotation (12) parallel to each other and to the shaft (4) and form a two-point system with the shaft (4).

The two support rollers (11) are mounted at a distance one above the other in a bracket (H) attached to the cross member (8) and are adjustable relative to the shaft (4).

This bracket (H) has two bearing plates (13) attached to the cross member (8) at a distance from one another and two bearing brackets (14) holding the rotation axes (12) of the support rollers (11), and these bearing brackets (14) can be continuously adjusted in two directions relative to the shaft (4) with the support rollers (11) by means of screws (17) and nuts which engage through elongated holes (15, 16) arranged in a crossing manner in the bearing plates (13) and bearing brackets (14).

The bearing tabs (14) of the support rollers (11) can grip inside between or outside over the bearing shields (13).

By loosening the screws (17), the roller pair (RP) can be continuously moved in the direction of the arrow (B) onto the shaft (4) against

the force effect (arrow K in Fig. 3) and also in the height direction (arrow C in Fig. 3).

This adjustment is carried out with a small amount of play between the support rollers (11) and the shaft (4), so that the rollers (11) do not touch the shaft (11) when the shaft is not under load, but only when pressure (arrow K) is applied to the shaft (4) and the shaft is deformed does the shaft (4) support itself against bending on the support rollers (11) at two points (lines) on the casing.

The support rollers (11) are formed by plastic rollers, which are rotatably supported by means of rolling bearings (18), preferably needle bearings, on their rotary axes (12) held in the bearing plates (14) and designed as bolts screwed into the bearing plates (14).

Each winding guard (7) is formed by a protective plate with a U-shaped cross-section, enclosing the shaft (4) in an arc and fastened to the cross member (8) with the U-leg ends by screws (19) and nuts (20).

The U-legs (7a) of each winding protection (7) overlap the support rollers (11) and their holder (H) at the top and bottom, so that the entire shaft support is covered within the winding protection (7).

Each wrapping guard (7) rests with its side edge closely against the two sprockets (5) assigned to it or closely against the sprocket (5) assigned to it and the channel side wall (3a), so that the entire shaft (4) is protected against the cuttings winding up.

Preferably, only the shaft (4) adjacent to the threshing unit (DW) is equipped with wrap guards (7) and a pair of support rollers (RP) and the chains (6) run

in the area of the other shaft (4) around a drum. Of course, both shafts (4) can also be equipped with chain guards (7) and at least one pair of rollers (RP) each.

Claims (6)

Protection claims 1. Inclined conveyor on a harvesting machine, which has several conveyor chains in a feed channel that run continuously around chain wheels at a distance from one another, and a winding protection is arranged around at least one of the chain wheel shafts between the chain wheels and the channel side walls, characterized in that the chain wheel shaft (4) is supported against deflection by at least one pair of rollers (RP) arranged within its winding protection (7) and held on a crossbar (8) of the feed channel (3). 2. Inclined conveyor according to claim 1, characterized in that the two support rollers (11) of the roller pair (RP) run with their axes of rotation (12) parallel to each other and to the shaft (4) and form a two-point contact with the shaft (4). 3. Inclined conveyor according to claim 1 or 2, characterized in that the two support rollers (11) are spaced apart one above the other in a holder attached to the cross member (8). (H) are adjustably mounted relative to the shaft (4). 4. Inclined conveyor according to one of claims 1 to 3, characterized in that the holder (H) has two bearing plates (13) fastened to the crossbar (8) at a distance from one another and two bearing brackets (14) holding the axes of rotation (12) of the support rollers (11), and these bearing brackets (14) are connected to the support rollers (11) by screws (17) with nuts in two directions (B and C) relative to the shaft, which are arranged in elongated holes (15, 16) arranged in the bearing plates (13) and the bearing brackets (14) intersecting one another. (4) are continuously adjustable. 5. Inclined conveyor according to one of claims 1 to 4, characterized in that the support rollers (11) are formed by plastic rollers which are supported by means of roller bearings (18) are rotatably supported on their axes of rotation (12) which are held in the bearing plates (14) and designed as bolts screwed into the bearing plates (14). 6. Inclined conveyor according to one of claims 1 to 5, characterized in that each winding guard (7) is formed by a U-shaped cross-section, which surrounds the shaft (4) in an arc shape and is connected to the U-leg ends by screws (19) and nuts (20) attached to the cross member (8).