DK155484B - DEVELOPMENT FOR MAJOR PEOPLE FOR THE DISTRIBUTION OF AVN - Google Patents

Abstract

Combine harvesters are conventionally equipped with chaff spreading devices, so that the chaff is distributed over the land as uniformly as possible. So that the spreading device can be arranged behind the screening boxes in a space-saving way, whilst at the same time ensuring as uniform a chaff spreading as possible, there is a housing which has at least one connection for the supply of compressed air (14) and at least one blow-out orifice equipped with at least one guide plate. The housing is arranged directly or via supporting devices on the side walls or side bearers of the combine harvester (17, 18) approximately at the height of the screening boxes behind these and underneath the straw vibrator, so that each of the blow-out orifices pointing approximately in the direction of the screening boxes and the guide plates deflect the outflowing stream of blowing air towards a particular side wall of the combine harvester. <IMAGE>

Description

in

DK 155484 B

The present invention relates to a combine harvester spreading device.

In combine harvesters, under the straw shakes, the cleaning screen is placed for short straw and grain, in which the short straw and chaff are cut and blown out in the field by blowers placed in front of the cleaning screens.

If the straws are not shaken loosely in the field or collected in the form of pressed bales, a so-called 10 attachment hooks, in which the long straws fall down, may be placed below the rear end of the straw shakes, as even as possible beyond the cutter width of the combine. While the most evenly distributed dispersion of the chopped straw is sought through straw spreading plates in the outflow area of the chopper, the chaff blown out of the cleaning solids falls out of the field without any special spreading device, so that only a very uneven distribution occurs over the evenly distributed distribution. section width, and unwanted accumulations may occur. Since the chicks make up approx. a quarter of the straws, they can destroy a good 20 spread of the ejected chop from a body chopper if they overlay the scattered chop into webs.

The invention has for its object to provide a device of the kind mentioned initially, which can be arranged space-saving behind the cleaning solids, and which allows an even spread of the chunks.

According to the invention, the task is solved by at least one housing which is provided with at least one connection for supply of compressed air and at least one exhaust opening provided with at least one control plate and which is arranged directly at, or by means of supporting devices in sidewalls or carriers positioned in the side of the combine at the height of the cleaners, behind these and below the straw shakers, whereby each of the exhaust openings, which point in the direction of the cleaners and the guide plates, directs the outgoing air flow towards a sidewall in the combine. The device according to the invention can be placed space-saving behind the cleaning solids below the straw.

DK 155484B

2 shakes. If the combine harvester is equipped with a straw chopper, the housing with the blow nozzles is placed in the space between the cleaning soles and the chopper below the straw shakers.

Through the blowout openings and the control plates 05, fan-shaped air streams are created in the direction of the sidewalls, respectively facing outwards, which blow the blown or sucked-in chutes fan-shaped over the cutting width of the combine, thereby spreading them evenly over the section width.

The housing may consist of a tube fixed in the region 10 at the sidewalls of the combine and extending transversely thereto and provided with several openings distributed throughout its length, the guide plates being fixed at an acute angle in the region of the outlet openings. with the longitudinal axis of the tube extending from the center piece of the tube and each being directed at the 15 adjacent side wall. The blowing nozzles projecting from the center piece, each of which is inclined to the opposite sides, control the air flow and hence the chutes so that they are spread fan-shaped. The number and direction of the blow nozzles, as well as their direction of flow and the velocity of the air flow, are suitably selected for the existing air flow as the feeders, so as to obtain the smoothest possible spread. The nozzle openings in the housing and the pipe, respectively, are arranged so that the air streams which cause the chutes are diverted to the side or diagonally, and if necessary also accelerated, so that the chutes are spread over the section width.

For regulating the air flows from each of the outlet openings, these can be closed by means of rotatable flaps. Through the flap setting, the outgoing air flow can be controlled. The flaps themselves are suitably arranged such that they already direct the outgoing blowing air in the desired direction.

The guide plates are also conveniently mounted pivotally on the tube or housing so that the direction of the air flow can be controlled therefrom.

In a further embodiment of the invention, the control plate is

DK 155484 B

3 are connected to a longitudinal sectional saw-shaped housing in the region at its outer edges, the housing in cross-section being made U-shaped and comprising the pipe with its lateral portions consisting of side walls, and the inclined surfaces of the saw-roof profile forming guide surfaces, and the steps, which connect the inclined surfaces form outlet openings. The saw-shaped housing is conveniently the part of the tubular housing facing the cleaning soles.

The tube or tube-like housing may be divided into a mid-transverse plane of sealing plates, each of the chambers formed at the partition of the tube being provided with its own fan supply. In such a division, the air flow from each of the chambers can be directed to either side of the combine.

Conveniently, the pipe or tubes or pipe-like housing is mounted pivotally about a longitudinal axis in the side walls so that the direction of the air currents which disperse the chimneys can also be controlled by turning the housing.

A separate control of the left and right sides can be provided by the split pipes being pivotally connected to each other about the longitudinal axis in the region at their intermediate dividing and front walls, so that each of the shared pipes can be rotated independently of the other.

In another embodiment of the invention, the housing and the housing, respectively, are of square cross-section, whereby the 25 housing walls facing the cleaning sills are provided with openings which, from the transverse center plane, are closable with rotatable flaps, the free ends of which point towards the adjacent side walls. By means of the flaps, the amount and direction of the blowing air can be controlled.

30 Conveniently, guide plates are also arranged in the pipe-like houses which extend obliquely outwards.

In another embodiment of the invention, the tube-like housing is provided with opposite and in successive sections 90 ° offset rotatable flaps. In this embodiment, blow nozzles are also arranged around the tubes for spreading the chaff. Flap-

DK 155484B

The 4 pairs may have a U-shaped cross-section, with the angled side portions enclosing the tube-like housing, thus forming sharper rays of air currents.

The pipes and the pipe-like housings, respectively, may be provided with fan air inlets on their outer faces. In order to enable a pivot, the blower air inlets may be arranged as pivots.

In another embodiment, the housings consist of single box-shaped bodies which are mounted pivotally in transverse 10 carriers. Thus, each box-shaped body can be adjusted according to the desired blowout direction.

According to a further embodiment, the housing defines an O-shaped or trough-shaped curved chamber, the sides or concave sides of which are directed towards the cleaning solids, whereby the housing has 15 tongue-bent wall portions in its walls facing the cleaning solids or in the walls covered by the sides of the U, respectively. forming nozzle-shaped openings directed to the combine harvester side walls. The housings thereby capture the chutes supplied by the airflow in their cavity and spread them by appropriate arrangement of the 20 blowing air nozzles across the section width. The upper surface of the O-shaped housing may further be provided with nozzle openings formed by tongue-like, bent-out wall portions which prevent deposits of chaff, short straw or dust.

Instead of the lower side of the ϋ-shaped housing 25, a roof-shaped projection with molded hollow bodies may also be arranged approximately parallel to the inclined surfaces of the projection, whereby the walls forming the inclined surfaces and the corresponding walls of the hollow body are provided with nozzle openings formed by tongue-like outwardly bent wall portions. By this arrangement, a fan-shaped air stream can be produced to disperse the chaff.

According to a further embodiment of the invention, a duct of approximately rectangular cross-section and having a funnel-shaped expanding outlet area is arranged behind the cleaning solids, the duct inlet area of the duct being double-walled and the annular fan air chamber thus formed being provided with a blower.

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5 air connections. The inner wall of the blowing air chamber is laminated or provided with tongue-like guide plates with blowing air slots directed towards the outlet area. The nozzle openings, which are directed towards the outlet area, produce, by injector-05, a flow which accelerates the air flow so that the chutes are spread fan-shaped on the ground with good dispersion. In order to improve the flow conditions, the inlet area may be further narrowed funnel or wedge-shaped. In the outlet area, guide plates may be fan-shaped, which improves the fan-shaped spread of the chunks.

In another embodiment, a flat blower air box is provided beneath the rear end of the cleaning solids, which in its upper wall is provided with slat-shaped plates or outwardly bent tongues with nozzle-like blower air openings which form a fan-shaped air flow.

In order to allow better access to the cleaning solids and to enable the housing of slit-shaped blow-air nozzles to be adjusted in further directions, the housing or blow-air pipe or tubes, in a further embodiment of the invention, are mounted rotatably and slidably in a carriage which is longitudinally displaceable and fixable in guides on the side of the combine.

The throttle valves and the control plates can be individually adjustable and fixed by hand. There may also be arranged rods for regulating the throttle valves and the control plates connected to special actuators or pressure means piston-cylinder adjusting units.

Embodiments of the invention will now be described in more detail with reference to the accompanying drawings.

30 FIG. 1 is a side view of a combine harvester in schematic representation with a broken sidewall so that the straw shakes, cleaning solids and blowing air nozzles which disperse the chaff are visible; 2 is a plan view of the combine of FIG. 1, at

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6 shows the area of the blow nozzles for spreading the chunks broken up; FIG. 3 is a plan view of a blower nozzle for spreading chaff, FIG. 3a is a section through the nozzle of FIG. 3 along line A-A, FIG. 4 shows another embodiment of a tubular blow nozzle body in plan view; FIG. 4a is a section through the blow nozzle along line A-A of FIG. 4, 10 FIG. 5 shows a third embodiment of a blower nozzle in plan view; FIG. 5a is a section along line A-A of FIG. 5, FIG. 6 is a plan view of a carrier with a pneumatic air box rotatably mounted thereon; FIG. 6a is a section along line A-A through the device of FIG. 6, FIG. 7 is a plan view of a further tubular nozzle; FIG. 7a is a section through the nozzle of FIG. 7 along line A-A, FIG. 8 is a side view of a U-shaped nozzle body in schematic representation; FIG. 9 is a view of the nozzle in the direction of the arrow Y in FIG.

8 'FIG. 10 is a view similar to FIG. 9 of another embodiment of the nozzle with a roof-shaped projection 25; FIG. 11 is a side view similar to FIG. 8 of a trough-shaped nozzle body; FIG. 12 is a schematic longitudinal section through an annular nozzle body with funnel-shaped expanding inlet and outlet areas; FIG. 13 is a cross-section through the nozzle body of FIG. 12 along line A-B; and FIG. 14 is a side view of a box-shaped nozzle body disposed below the rear end of the cleaning soles.

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7 In FIG. 1 is indicated in outline a self-propelled combine harvester 1f, which has since been partially cut away to expose the straw shakes 2, short straw 3, grain screen 4 and blow nozzle 5, which disperse the chaff. In the direction of travel before 05 the cleansing rolls 3, 4 are arranged a blower 6, which blows to the cleansing rolls 2, 4 and blows short straws and stays away from it. The blower nozzle body 5 is located below the straw shakers behind the cleaning rolls 3, 4. The combine harvester shown is further provided with an attachment hook 7. The blow nozzle body 5 10 is located in the space between the cleaning rolls 3, 4 and the attachment hook 7, below the straw shakes 2.

The blower nozzle body, which consists of an elongated tubular housing, is retained longitudinally displaceable and pivotable in carriers 8 in the sides which are pivotally mounted in a carriage 9 which in turn is transversely slidable in guide rails 10 arranged horizontally in the direction of the combine 1 walls. The possible displacement and turning directions of the blowing nozzle 5 are indicated in FIG. 1 with arrows. Furthermore, offset and rotated positions of the blower nozzle 5 are plotted in dotted line in FIG. First

20 As can be seen from FIG. 2, the blower nozzle body 5 consists of a transverse pipe-like body, which is divided in its center piece by partitions 12, 13. The parts of the blower nozzle body 5 ', 5' 'are provided with connection nozzles to which hoses 14, 15 are connected for supplying blow air. Blow 25 air is produced by a blower 16, which is driven by a V-belt drive by the combine's main drive.

The portions of the blower nozzle 5 ', 5' 'are provided with flaps 19, each of which points to the adjacent side walls 17, 18, which define the blower air nozzle openings and conduct the flow of blowers fan-shaped beyond the cutting width of the combine. In the embodiment of FIG. 3, the blowing nozzles 5 ', 5' 'each consist of pipe-like housings, the sides of which are facing the cleaning soles are saw-shaped stepped. The steps consist of successively inclined wall portions 20 which are connected to the subsequent inclined wall portion via step 21. The steps 21 form approximately semicircular discharge openings for

DK 155484B

8 the air. On each of the outer edges of the saw-shaped steps, air control plates 23 are rotatably rotated about vertical axes 22r, which plates on the sides are provided with plates 24 which are deflected at an angle and which enclose the blowing nozzles 5 ', 05 5' 'on the sides. .

In the interior of the tubular fan nozzle housings 5 ', 5' ', in the region of the outlet openings 21 formed by the steps, throttle valves 26 are arranged through which the flowing amounts of blowing air can be controlled.

10 The blowing nozzles 5f, 5 '* are mounted pivotally about transverse axes 27, 28 in sidewalls in the body of the combine. In addition, in their center regions, they are pivotally connected to one another about a transverse axis 29. The transverse axis 29 is disposed in the side walls 31, 32 which separate the nozzle bodies 5 ', 5' '.

The connecting nozzles 33, 34, which connect the nozzle bodies 5 ', 5 *' to the blower supply hoses, are provided with sliding valves 36 for controlling the flow of blowing air.

The exemplary embodiment of FIG. 4 and 4a differ substantially only from that of FIG. 3 and 3a, the throttle flaps 20 for controlling the flow of air are omitted.

In the embodiment of FIG. 5, 5a, the parts 5 ', 5' 'in the blow nozzles consist of square cross-section tubes provided with opposite blow air outlet openings 40, 41 and 42, 43 in successive and 90 ° 25 offset sections. On the inner edges of these blower openings, air control flaps 48 are pivotally mounted about axes 44, 45 and 46, 47 perpendicular to the longitudinal axis of the blowing nozzles 5 ', 5', which flaps are provided with plates 49 on the sides which are bent at an angle, and 30 encloses the square nozzle of the blow nozzle on the sides. The air control plates 48 visible on the plan view cover the outlet openings 42 below. In the exemplary embodiment of FIG. 5 and 5a, the blow nozzles 5 ', 5' 'are thus provided with inclined nozzle openings around which blow out blowing air to disperse the chaff.

In the embodiment of FIG. 6 and 6a,

DK 155484B

9, the serial walls are rotatably mounted U-carriers 50, 51 and 50 ', 51' arranged in pairs pivotally about a horizontal transverse axis, between which individual fan air boxes 52 are pivotally held. The blower air boxes 52 are provided at their rear end in the direction of travel with connecting plugs 53 to the blower air hoses 54.

At their forward end in the direction of travel, the boxes 52 are provided with rotatable flaps 55, with which the air flow can be directed in the desired direction.

In the embodiment of FIG. 7 and 7a, the parts 5 ', 10 51 * consist of the blow nozzle body again of tubes having a square profile pivotable relative to one another on a horizontal transverse axis and provided with outlet openings on their sides facing the cleansing soles and which can be closed by means of pivots. air control plates 60. Through these air control plates 60, the air flow can be controlled in the desired direction.

In the interior of the parts 5 ', 5' 'of the blower nozzle, air control plates 61 are welded which disperse the blower air and direct it to the outlet openings.

The blowing air is supplied to the parts 5 ', 5' 'of the blowing nozzles 20 by means of so-called rotating passages 62 arranged on the outer sides.

In the embodiment of FIG. 8, the blower nozzle body consists of a housing 65, the walls of which define a U-shaped channel, whose side portions 66, 67 are directed to the cleaning rolls 3, 4. The inner walls enclosed by the si-25 departments are provided with curved tongues 68 which define column-shaped nozzle openings directed outwards from the center to the outward direction of the one shown in FIG. 9. For blowing away dust and deposited chaff, the upper wall of the upper side portion is also provided with tongue-like curved guide plates 68.

The direction of air flow flowing from the slit-shaped nozzle openings 69 is indicated by arrows in FIG. 9th

Instead of the lower side portion 67 of FIG. 8 and 9, as shown in FIG. 10, also having a roof-shaped inclined projection or deflection body 70 in the middle, on whose sides are bridge-like chambers 71, 72,

DK 155484B

10 which runs approximately parallel to the inclined faces 73, 74 of the roof-shaped body. The inclined surfaces 73, 74 as well as the upper and lower side walls of the bridge-like bodies 71, 72 are also provided with outwardly bent pliers 68, so as to form 05 nozzle-like outlet openings. Between the inclined surfaces 73, 74 and the bodies 71, 72 duct-like areas 76, 77 are formed which serve for the fan-shaped exhaust of the air and thus also for the desired distribution of the chimneys.

In the embodiment of FIG. 11, the blower nozzle body 10 consists of a bowl-shaped housing 80 defining a circularly curved channel 81. The concave side of the bowl-shaped blow nozzle faces the seats 3, 4. The inner wall 82 of the blower nozzle 80 is also provided with tongue-like outwardly directed air control plates 83 which against each of the side walls from a vertical plane in the center.

In the embodiment of FIG. 12 and 13, a blow nozzle body is provided in the form of a closed nozzle-like tube 90 having an inlet region 91 which narrows funnel or wedge-shaped and an outlet area 92 which extends nozzle-like. The inlet area 20 has an annular chamber 93 provided with fan air connections, which is not shown.

The inner wall of this inlet region consists of lamellarly arranged plates 94 which form slit-shaped nozzle openings 95 in the direction of the arrows. The blowing air flowing out of these 25 nozzle openings 95 injects the airflow with the chokes in an injector-like manner and accelerates it. In the outlet area 92, the air flow is expanded fan-shaped so that the chutes are evenly distributed over the section width.

As shown in FIG. 13, additional control plates 96 are provided in the outlet region 92 30 which promote the fan distribution of the air flow. The air flow exiting from the outlet area 92 is directed obliquely backwards towards the field, so as to obtain a good spread of the chaff and short straw.

In the embodiment of FIG. 14, the blower nozzle body consists of a flat box-shaped housing 100, the upper wall of which is provided with tongue-like outwardly bent air control plates 101 which

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11 forms blow nozzle openings 102 in the direction of the arrows. The blower nozzle openings 102 are fan-shaped so that the air flow sucked in from the cleaning solids with the chimneys is fan-shaped and the chimneys are uniformly spread.

05 10 15 20 25 30 35

Claims (11)

1. Combine harvester spreading device, characterized by at least one housing having at least one connection 05 for supply of compressed air and at least one blowout opening provided with at least one control plate, which is arranged immediately or by means of supporting devices on the sidewalls or carriers in the side of the combine in the area at the height of the cleaners, behind these and below the straw shakers, whereby each of the 10 exhaust openings pointing towards the cleaners and the guide plates direct the outgoing air flow towards each of the sidewalls of the combine. 2. Device according to claim 1, characterized in that the housing 15 consists of a pipe which is fixed in the area at the side walls of the combine and extends transversely thereto, and which is provided with several openings over its entire length, and the area of the outlet openings, which are preferably closable, at least partially, by means of pivot flaps, are fixed air control plates which form a pointed angle with the longitudinal axis of the pipe and which, starting from the center region of the pipe, are each directed to the nearest sidewall, whereby the guide plates The bearing plates are preferably rotatable by the tube or housing, whereby the guide plates are preferably U-shaped in cross-section and provided with approximately rectangular deflected plates on the sides. Device according to one of Claims 1 or 2, characterized in that the guide plates are connected to a longitudinal section 30 approximately saw-shaped in the region at its outer edges, which housing is U-shaped in cross-section and encloses the tube with its lateral portions. sidewalls, and the AT slopes of the sawdust profile form guide plates and the steps connecting the sloped surfaces form outlet openings 35, whereby the saw-shaped housing preferably constitutes the portion facing the cleaning seams, whereby the pipe DK 155484B 13 or the pipe auxiliary housing is of connecting plates preferably in its middle transverse plane, and each of the chambers formed by the division of the pipes is provided with its own compressed air connection, whereby the pipe or pipes or pipe-like housing, respectively, are mounted pivotally in the side walls of the combine, preferably about a longitudinal axis. Device according to claims 1-3, characterized in that the divided pipes are pivotally connected to each other about the longitudinal axis in the region at their middle partitions or front walls. 5. Device according to claims 1-4, characterized in that the housing and the housing respectively consist of square profile pipes, that the housing sides facing the cleaning solids are provided with openings which can be closed with rotatable flaps from the vertical a transverse center plane, the free ends of which are separately pointed towards the nearest sidewall, and AT are arranged in the tube-like housings guide plates, each of which preferably extends outwards. 20 Device according to claims 1-5, characterized in that the pipe-like housing is provided with rotatable flaps, arranged in successive and 90 ° offset sections, in pairs and symmetrically opposite one another, and preferably having an O-shaped cross section, and whose bent side portions comprise the tube-like housing, and the AT tubes and the tube-like housings, respectively, are provided with blower air inlets, preferably on outer faceplates, and preferably in the form of pivots. Device according to claim 1, characterized in that the houses consist of individual box-shaped bodies which are mounted rotatably in transverse supports. Device according to claim 1, characterized in that the housing 2 35 defines a chamber with U-shape or trough-shaped curvature, 3 whose side portions or concave sides are facing the cleaning soles. facing sides of the cleaning sills, respectively, in the walls covered by the side portions of the U-shape have tongue-shaped wall portions forming guide plates, which wall parts form nozzle-shaped openings directed to the sidewalls of the combine-05, whereby the upper surface of the U-shaped housing is preferably provided with nozzle openings. of tongue-like outwardly bent wall parts. Device according to Claim 8, characterized in that a roof-shaped projection with molded hollow bodies is arranged in place of the lower side portion of the O-shaped housing approximately parallel to the inclined surfaces of the projection, and that the walls constituting the inclined surfaces and the thereto, parallel walls of the hollow bodies are provided with nozzle openings formed by 15 tongue-like outwardly bent wall portions. Device according to claim 1, characterized in that a duct of approximately square cross-section is arranged behind the cleaning soles and with a funnel-shaped expanding outlet area, that the inlet area of the duct is double-walled and the annular fan air chamber thus formed is provided with a blower. air connections, and the AT inner wall of the blowing air chamber is slat-like or provided with tongue-like guide plates with blowing air slots directed to the outlet area, whereby the inlet area is preferably narrowed wedge or funnel-shaped, preferably in the outlet area, guide plates are arranged. Device according to claim 1, characterized in that a flat fan air box is provided below the rear end of the cleaning solids, which is provided on its upper wall with nozzle-like fan air openings formed by lamellarly arranged plates or outwardly bent tongues, which produce a fan with openings lateral components to the walls of the machine. DK 155484 B Device according to claims 1 to 11, characterized in that the housing or blower pipe or tubes are respectively fixed in length and pivotally in a carriage which is longitudinally displaceable and fixed in guides on the sides of the combine. 05 10 15 Copenhagen, 20 25 30 35