BE1022997A9 - Agricultural working tool - Google Patents

Abstract

A farming implement (10) comprising a first implement section (11) having a second implement section (12) adjacent to the first implement section (11), displacing means (17) via which the second implement section (12) faces the first implement section (12). 11) is displaceable about a pivot axis (15) and with a third implement section (13) adjoining the second implement section (12) which is displaceable relative to the second implement section (12) about a pivot axis (16), the third one Implement part (13) with the first working device section (11) via a traction-transmitting element (18) is coupled such that in the by the displacement device

(15) initiate displacement of the second implement section (12) relative to the first implement section (11), the third implement section (13) positively coupled to the displacement of the second implement section (12) is displaceable.

Description

Agricultural working tool

The invention relates to an agricultural implement such as e.g. an attachment of an agricultural harvesting vehicle.

From the practice agricultural implements are known, which have a first working equipment section, at least one adjoining the first working device section and opposite the same displaceable second implement section, and at least one adjacent to the second implement section and relative to the same displaceable third implement section. Then, if the agricultural implement is e.g. is a header for an agricultural harvesting vehicle such as a maize header for a forage harvester, the first implement portion is stationary, in which case only the respective second and third implement portion are then displaced. A fixed first implement portion of an attachment is also referred to as the center well and an adjoining movable work implement portion is also referred to as a cantilever. The invention is not limited to trained as attachments agricultural implements. The agricultural implement may also be a tillage implement or a rake.

In known from practice work equipment having a first work piece portion, and a second work piece portion adjacent to the first work piece portion and a second work piece portion third work piece portion is for the displacement of the second work piece portion relative to the first work piece portion and for the displacement of the third work piece portion relative to the second Each working implement section requires its own displacement device. The relocating typically have a complex structure with a high space requirement, since for the relocations respectively relatively high forces or moments must be applied.

There is a need for a novel agricultural implement with a simpler construction.

On this basis, the present invention has the object to provide a novel agricultural implement.

This object is achieved by an agricultural implement according to claim 1.

In accordance with the invention, the third implement section is coupled to the first implement section via a tensile force transmitting element such that when the second implement section initiates displacement of the second implement section relative to the first implement section, the third implement section is forcibly coupled to the displacement of the second implement section.

With the invention, a single displacement device is sufficient for the displacement of the second implement section relative to the first implement section and for the displacement of the third implement section relative to the second implement section due to the forced coupling between the third implement section and the first implement section. As a result, a simpler structure for an agricultural implement can be realized.

In addition, the kinematic coupling significantly reduces the power requirement in the respective displacement device, since the motion sequences or effective forces advantageously support one another.

Particularly preferred is the embodiment of the tensile force-transmitting element as a rope. Via a cable, the positive coupling between the third implement section and the first implement section can be realized in a particularly advantageous manner. A cable can flexibly represent a deflection of the traction-transmitting element via a deflecting element during the folding process in the respective displacement device via the deflecting element and, moreover, is in particular tolerant of angular errors between the working device sections displacing relative to one another.

According to an advantageous development of the invention, the traction-transmitting element engages with a first end on the first implement section and with a second end on the third implement section, wherein the third implement section comprises a deflecting element on which an adjacent to the second end of the traction element adjacent portion of the traction element the displacement of the third implement section is performed relative to the second implement section.

The second end of the traction-transmitting element preferably engages firmly on the deflecting element of the third working implement section and is in particular cast therewith.

This section of the traction-transmitting element is guided on the deflecting element such that when the third working device section is displaced relative to the second working device section, the traction-transmitting element can be unwound more strongly with this section around the deflecting element or can be unwound more strongly from the deflecting element. This is a particularly advantageous, positively coupled displacement of the third implement section possible.

According to a further advantageous embodiment of the invention, the deflector engages rotatably on the third implement section and is supported on an eccentric, which is fixedly connected to the second implement section. The eccentric moves the deflecting element about its axis of rotation on the third implement section up and down. The eccentric ensures that the deflecting reduces its distance to the pivot axis between the second implement section and the third implement section so far when folded, that in a trained as a rope, traction transmitting element, a cable vector always sufficient lever to the pivot axis between the second implement section and the third working device section has. In the fully extended position of the eccentric ensures a higher position of the deflection, so that the deflector does not protrude below the agricultural implement and reduces the ground clearance of the agricultural implement.

According to a further advantageous embodiment of the invention, the tensile force-transmitting element engages the first end of a lever mechanism of the first implement section, wherein a first link of the lever mechanism hingedly engages with a first end to a first portion of the first implement portion, wherein a second link of the lever mechanism with a third end of the lever mechanism hingedly engages a first end at a second end of the first link and a second end at a second end of the second link, wherein the second link engages with a first end articulated to a second portion of the first link the first end hingedly engages the pivot axis formed between the first implement portion and the second implement portion, and wherein the tensile force transmitting member is pivotally connected to the first end at the second end of the second link and the second end of the third link s attacks. This embodiment allows a particularly advantageous displacement of the second implement section and third implement section relative to the first implement section.

According to a further advantageous embodiment of the invention is under tensile load of the tensile force transmitting element, a length of the same to adapt the third implement section to uneven floors changeable. This can further improve the operation of the implement.

Preferred embodiments of the invention will become apparent from the dependent claims and the description below. Embodiments of the invention will be described, without being limited thereto, with reference to the drawings. Showing:

Figure 1 is a detail of a trained as an attachment of a farmer economic harvester, agricultural implement in a fully unfolded state thereof.

Fig. 2 shows the detail of Figure 1 in a partially folded to stand the attachment.

Fig. 3 shows the detail of Figure 1.2 in a more folded to stand the attachment. and

Fig. 4 shows the detail of Fig. 1-3 in an even more folded

Condition of the attachment;

Fig. 5 shows the detail of Fig. 1-4 in a completely folded

Condition of the attachment;

Fig. 6 shows the detail of Fig. 1-5 in the fully unfolded

Condition of the attachment with raised third header section; and

Fig. 7 shows the detail of Fig. 1-6 in the fully unfolded

Condition of the attachment with lowered third header section.

The invention relates to an agricultural implement such as e.g. an attachment of an agricultural harvesting vehicle.

With reference to Figs. 1 to 7, the invention will be described for a header formed as a corn header of a forage harvester, but the invention is not limited thereto.

An attachment has several implement sections, hereafter called attachment sections, in particular via a first, preferably stationary attachment section, at least one second attachment section adjoining the first attachment section, displaceable relative to the first attachment section, and at least one adjacent to the respective second attachment section relative to the respective second attachment section displaceable third header section.

Typically, the fixed header portion is referred to as a central recess, wherein on both sides of the fixed header portion at least a second and a third movable attachment portion, which are also referred to as a boom, are present.

1 to 5 show a section of an attachment 10 for an agricultural harvesting vehicle, wherein in Fig. 1 to 5, a first, fixed header section 11, a first header section adjacent to this, relative to the first header section 11 displaceable second header section 12 and a are shown on the second header section 12 adjacent, relative to the second header section 12 displaceable third header section 13 are shown.

The fixed header section 11 is shown only in half, with the not shown half of the header section 11 also the above-mentioned, movable header sections 12 and 13 connect, so then the header 10 five header sections, namely the first fixed header section 11, and both sides thereof each have a second header section 12 and a third header section 13, respectively.

In the exemplary embodiment shown, in which the attachment 10 is designed as a corn header, each of the attachment sections 11, 12 and 13 carries a plurality of rotating or circumferentially driven cutting elements 14.

The second attachment section 12 shown in FIG. 1 is displaceable relative to the first attachment section 11 about a pivot axis 15, the third attachment section 13 shown in FIG. 1 being displaceable about a pivot axis 16 relative to the second attachment section 12 shown.

The respective second header section 12 is displaceable relative to the first header section 11 about the pivot axis 15 by means of a displacement device 17, wherein the respective displacement device 17 comprises at least one hydraulic cylinder.

The respective third attachment section 13 of the attachment 10 is coupled to ensure the displaceability of the same relative to the respective second header section 12 of the attachment 10 with the first header section 11 via a zugkraftübertragendes element 18, namely such that when initiated by the displacement device 17 displacement of the second header section 12 relative to the first header section 11 of the third header section 13 forcibly coupled to the displacement of the second header section 12 about the pivot axis 15 is displaceable.

The displacement of the respective second attachment portion 12 of the attachment 10 and the respective third attachment portion 13 of the attachment 10 is accordingly via the displacement device 17, which serves for the displacement of the respective second header portion 12 relative to the first header portion 11, as well as the positive coupling of the third header portion 13 the first header section 11 via the traction-transmitting element 18th

The traction-transmitting element 18 is preferably designed as a rope or alternatively as a chain.

The traction-transmitting element 18 engages with a first end 19 on the first header section 11 and with an opposite second end 20 on the respective third header section 13.

The respective third attachment section 13 comprises a deflection element 21 for the traction-transmitting element 18.

The deflecting element 21 is an assembly of the third header section 13. The traction-transmitting element 18 engages with its second end 20 on the deflecting element 21 of the third header section 13 and is encapsulated therewith in particular.

At this transfer element 21, a second end 20 of the tensile force transmitting member 18 adjacent portion of the traction element 18 is guided in the displacement of the third header section 13 relative to the second header section 12 such that when moving the third header section 13 relative to the second header section 12, the zugkraftübertragende Element 18 is wound more strongly with this section around the deflecting element 21 or is unwound more strongly from the deflecting element 21.

If the attachment 10 is to be transferred starting from the completely unfolded position shown in FIG. 1 in the direction of the fully folded position shown in FIG. 5, as shown in FIGS. 2 and 3, when the second attachment section 12 is folded in, forcibly coupled relative to the first attachment section 11 Also, the third header section 13 pivoted relative to the second header section 12, namely in the position shown in Fig. 3, in which the third header section 13 relative to the second header section 12 has reached its maximum folded position.

In this positively coupled displacement of the third header section 13, starting from the position shown in Fig. 1 in the position shown in Fig. 3 of the second end 20 of the traction transmitting member 18 adjacent portion of the traction transmitting member 18 is stronger around the deflector 21 for the zugkraftübertragende element 18 wound. Here, the tensile force transmitting element 18 permanently transmits tensile forces.

In the reverse displacement of the third header portion 13 relative to the second header portion 12 from the position shown in Fig. 3 in the position shown in Fig. 1 when unfolding the attachment, the traction transmitting element 18, namely the second end 20 of the same adjacent Section, unwound more strongly from the deflecting element 21, wherein in this direction the traction-transmitting element 18 permanently transmits tensile forces.

The deflecting element 21 is rotatably mounted on the third header section 13. A corresponding axis of rotation 34 is preferably adjacent to the second end 20 of the traction-transmitting element 18th

The deflecting element 21 is supported on an eccentric 33, which is fixedly connected to the second header section 12. The eccentric 33 moves the deflecting element 21 about its axis of rotation on the third attachment section 13 up and down.

The eccentric 33 ensures that the deflecting element 21 during folding reduces its distance to the pivot axis 17 between the second header section 12 and the third header section 13 so far that when trained as a rope, traction transmitting element 18, a cable vector always sufficient lever to the pivot axis 17 between the second header section 12 and the third header section 13 has. In the fully extended position of the eccentric 33 ensures a higher position of the deflecting element 21, so that the deflecting element 21 does not protrude under the agricultural implement or attachment and reduces the ground clearance of the same.

The traction-transmitting element 18, which is preferably designed as a rope, engages with the first end 19 in the embodiment shown on a lever mechanism 22 of the first header section 11. In this case, the lever mechanism 22 a plurality of hingedly interconnected links 23, 24 and 25.

A first link 23 is pivotally attached at a first end 26 to a first portion of the first header section 11. A second link 24 engages with a first end 27 articulated to a second portion of the first header section 11, preferably at the formed between the first header section 11 and the second header section 12 pivot axis between the first link 23 and the second link 24 is a third link 25 positioned, which engages with a first end 28 at the second end 29 of the first link 23 with a second end 30 at a second end 31 of the second link 24 articulated. The traction-transmitting element 18 engages with its first end 19 articulated on the second end 31 of the second link 24 and thus on the second end 30 of the third link 25 at.

Then, when the attachment 10 is transferred, starting from the fully unfolded state of FIG. 1 in the partially folded state of FIG. 3, in which case the tensile force transmitting member 18 permanently transmits tensile forces, the lever mechanism 22 is due to the tension-transmitting member 18th transmitted tensile forces in the orientation shown in Fig. 1 to 3 held in which the arms 23, 24 and 25 are aligned substantially L-shaped to each other.

If the attachment 10, starting from the state of FIG. 3, is further folded in the direction of the state of FIG. 5, then the traction-transmitting element 18 no longer transmits tensile forces following the state of FIG. 3, so that the lever mechanism 22 then exists From the links 23, 24 and 25, starting from the state of Fig. 3 on the state of Fig. 4 in the state of Fig. 5 can be moved, so then the already collapsed header sections 12 and 13 on the first header section 11 space-saving without Collision with the lever mechanism 22 can be stored. The first link 23 may be designed as an adjusting element, e.g. with thread and adjusting tube. Thus, the preferably designed as a rope, traction transmitting element 18 can be stretched.

As already stated, the displacement of the second header section 12 relative to the first header section 11 takes place via the displacement device 17, which, however, is no longer shown to ensure a clear representation in FIGS. 4 and 5.

Starting from the fully unfolded state of Fig. 1, therefore, the second header portion 12 is initially displaced relative to the first header portion 11 by means of the displacement device 17, namely, starting from the fully expanded in Fig. 1 position in the gezeig in Fig. 3 te, partially folded Position on the intermediate position of Fig. 2, wherein in this case due to the forced coupling between the third header section 13 and the first header section 11 and the third header section 13 is displaced relative to the second header section 12. Following on from the state of FIG. 3, the second attachment section 12, together with the third attachment section 13 completely pivoted relative to the second attachment section 12, is pivoted further relative to the first attachment section 11, namely into the completely folded position shown in FIG. 5 via the intermediate position of FIG Fig. 4, in which case the tensile force transmitting element 18 transmits no further tensile forces and therefore the lever mechanism 22 can be moved from the position shown in Fig. 1 to 3 in the position shown in Fig. 5.

When unfolding the work implement or attachment 10 from the position shown in FIG. 5 to the position shown in FIG. 1, first the second attachment section 12 is displaced together with the third attachment section 13 relative to the first attachment section 11 by displacement device 17, namely into the in Fig. 3 shown intermediate position, in which case first the relative position between the third header section 13 and the second header section 12 remains unchanged. Only on further unfolding of the implement or attachment 10 from the state of Fig. 3 in the state of Fig. 1 via the displacement device 17 is due to the forced coupling of the third header section 13 and the third attachment section 13 relative to the second attachment section 12 moves.

The positive coupling between the third header section 13 and the second header section 12 is performed such that the third header section 13 can perform the entire swinging section by the positive coupling, without an additional hydraulic cylinder.

In the pivot axes 15 and 16, an opposite pivotal movement is performed.

An advantageous development is shown in FIGS. 6 and 7, wherein in Fig. 6 and 7 in the fully unfolded state, the implement 10 under tensile load of the tensile force transmitting member 18, the length thereof can be changed to the third header section 13, if necessary, further to the same subsequent header sections to adapt to uneven floors. Thus, in Fig. 6, the length of the traction-transmitting element 18 is shortened and in Fig. 7, the length of the traction-transmitting element 18 is increased, so that in Fig. 6, the third header section 13 is raised relative to a floor to be processed and lowered in Fig. 7. The adaptation of the length of the traction-transmitting element 18 is preferably carried out via a hydraulic cylinder 32 acting on the first end 19 thereof. The bottom adaptation of the third attachment section 13 can alternatively also be relieved via the first link 23 designed as an adjusting element. For ground adaptation and the handlebar 24 and / or the handlebar 25 could be used.

Then, when the third implement section 13, unlike FIGS. 6 and 7, is not designed to accommodate bumps and occupies the fully retracted condition of FIG. 1, it may be provided that the end position of the third header section 13 is stopped 1, no tensile forces or only a certain adjustable part of the tensile forces transmits, but rather zugkraftentlastet and exclusively in the displacement between the states of FIGS. 1 and 3 corresponding tensile forces transfers.

REFERENCE SIGNS LIST 10 Work Tool / Attachment 11 Workpiece Section / Attachment Section 12 Workpiece Section / Attachment Section 14 Mahörgan 15 Pivot Axle 16 Pivot Axle 17 Displacement Device 18 Tensile Force Transmitting Element 19 End 20 End 21 Deflection Element 22 Lever Mechanism 23 Handlebar 24 Handlebar 25 Handlebar 26 End 27 End 28 End 29 End 30 end 31 end 32 hydraulic cylinder 33 eccentric 34 axis

Claims (12)

Agricultural implement claims An agricultural implement (10) comprising a first implement portion (11) having a second implement portion (12) adjacent to the first implement portion (11), with displacing means (17) via which the second implement portion (12) is opposite the first implement portion (12) Work implement portion (11) about a pivot axis (15) is displaceable, and with a to the second implement portion (12) adjacent third implement portion (13) relative to the second implement portion (12) about a pivot axis (16) is displaceable, characterized in that the third work implement section (13) is coupled to the first work implement section (11) via a tensile force transmitting element (18) such that displacement of the second work implement section (12) relative to the first work implement section (11) is initiated by the displacement device (15) third implement section (13) positively coupled to the displacement of the second implement section (12) is displaceable. 2. Tool according to Claim 1, characterized in that the traction-transmitting element (18) is designed as a rope or chain. 3. Tool according to claim 1 or 2, characterized in that the traction-transmitting element (18) with a first end (19) on the first working device section (11) and with a second end (20) on the third working device section (13) engages. 4. Tool according to claim 3, characterized in that the third implement section (13) comprises a deflecting element (21) on which a second end (20) of the traction-transmitting element (18) adjacent portion of the traction-transmitting element (18) during the displacement the third implement section (13) is guided relative to the second implement section (12) such that upon displacement of the third implement section (13) relative to the second implement section (12), the tensile force transmitting element (18) becomes stronger about the deflector (21) with that section wound up or more of the deflecting element (21) can be unwound. 5. Tool according to claim 4, characterized in that the deflecting element (21) rotatably engages on the third implement section (13) and on an eccentric (33) which is fixedly connected to the second implement section (12) supported. 6. Tool according to claim 4 or 5, characterized in that the traction-transmitting element (18) with the second end (20) on the deflecting element (21) of the third working device section (13) engages. 7. Tool according to one of claims 1 to 6, characterized in that the traction-transmitting element (18) with the first end (19) on a lever mechanism (22) of the first implement section (11) engages. 8. Tool according to claim 7, characterized in that the lever mechanism (22) has a plurality of articulated link arms, wherein a first link (23) with a first end (26) hingedly engages a first portion of the first implement portion (11), wherein a second link (24) hingedly engages a second portion of the first implement portion (11) with a first end (27), and a third link (25) having a first end (28) at a second end (29) of the first first link (23) and with a second end (30) at a second end (31) of the second link (24) hingedly engages. 9. Implement according to claim 8, characterized in that the second link (24) articulates with the first end (27) on the between the first implement section (11) and the second implement section (12) formed pivot axis (15), and that the traction-transmitting element (18) articulates with the first end (19) at the second end (31) of the second link (24) and the second end (30) of the third link (25). 10. Tool according to claim 8 or 9, characterized in that at least one of the links (23, 24, 25) of the lever mechanism (22) for adaptation of the third implement section (13) is formed on bumps as adjustment. 11. Tool according to one of claims 1 to 10, characterized in that the tensile force transmitting element (18) under tensile load in its length to adapt the third implement section (13) is adjustable to uneven floors. 12. Tool according to claim 11, characterized in that the length of the traction-transmitting element (18) by a at the first end (19) of the same attacking hydraulic cylinder (32) is variable.