SE1951211A1 - Agricultural implements and procedure for handling agricultural implements - Google Patents

Abstract

This document shows an agricultural implement (1) for sowing and / or tillage, comprising a frame (100) extending along a direction of travel (F), a towing coupling (14), arranged at a front portion of the frame (10), and at least one support wheel assembly, arranged at a distance from the traction coupling. The agricultural implement has a first set (11a, 11b) of ground engaging tools, which are arranged along a transverse direction of the agricultural implement, and a second set (12a, 12b) of ground engaging tools, which are arranged along the transverse direction, and which are of a different type of tool than in the first set of included tools. Tools included in the first set (11a, 11b) are arranged in front of tools included in the second set (12a, 12b), so that land over which the agricultural implement travels is first worked by at least one tool included in the first set (11a, 11b) and then by at least one tool included in the second set (12a, 12b). A first subset (11a) of the first set of tools (11a, 11b) is supported by a first tool carrier (111a) rotatably attached to the main frame in front of said support wheel assembly (13), and a second subset (11b) of the first set of tools (11a, 11b) is supported by a second tool carrier (111b), which is rotatably attached to the main frame behind said support wheel assembly (13). The document also shows a method of operating the agricultural implement.

Description

AGRICULTURAL TOOLS AND PROCEDURE FOR HANDLING AGRICULTURAL TOOLS Technical area This document shows Agricultural tools and procedures for handling agricultural tools. More specifically, Iantbruk gear and procedure are shown which reduce the risk of a towing device of a towing vehicle connected to the Iantbruk gear being exposed to so-called "negative hook load".

Background There is a desire to design agricultural implements with an ever-increasing working width, so as to be able to increase the productivity of the agricultural implements. This applies to both implements for tillage and implements for grain, both of which are examples of implements with ground-intervening tools. The tools can, as a non-limiting example, consist of leveling tools, harrow tines, cultivator tines, harrow plates, coulters, seed plates, coulters for fertilizing or pesticides, and flattening or chopping tools. On the other hand, it is desirable to be able to transport the agricultural implement on a public road, which entails limitations, among other things, on how wide and high the agricultural implement can be when it is driven on a public road. Thus, it is necessary to be able to fold up the Iantbruk gear.

One way to achieve both large working width and the possibility of moving the agricultural implement on public roads is to fold the tool-bearing frame parts of the agricultural implement both upright and forward. However, this can mean that the implement becomes heavy at the back, especially if it is a seeding machine whose seed container, when the implement is folded, is empty. A back-heavy seed implement can cause negative hook loads to the towing vehicle, which should be avoided or in any case counteracted or minimized, as tow couplings are not normally designed to withstand negative hook loads.

There is thus a need for solutions to counteract the rear-heaviness of agricultural implements and to reduce the risk of negative hook|astpà draw couplings occurring.

SummaryAn end goal is thus to achieve an improved Industrial tool, and in particular a Industrial tool, where the risk of back heaviness and/or occurrence of negative hook|ast on the pull coupling is reduced.

The invention is defined by the attached independent patent claims. Embodiments appear from the attached non-independent patent claims, from the following description and from the attached drawings.

According to a first aspect, there is provided an agricultural implement for seeding and/or tillage, comprising a frame extending along a direction of travel, a traction coupling, arranged at a front part of the frame, and at least one support wheel assembly, arranged at a distance from the traction coupling, a first set of ground engaging tools, which are arranged along one transverse direction of the agricultural implement, a second set of soil intervention tools, which are arranged along the transverse direction, and which are of a different tool type than the tools included in the first set, wherein the tools included in the first set are arranged in front of the tools included in the second set, say that ground over which the agricultural implement travels is processed first by at least one of the tools included in the first set and then by at least one of the tools included in the second set, whereby a first subset of the first set of tools is supported by a first tool carrier, which is rotatably attached to the main frame n in front of said support wheel assembly, and wherein a second subset of the first set of tools is supported by a second tool carrier, which is rotatably attached to the main frame behind said support wheel assembly. l\/led "support wheel assembly" refers to a set of wheels which may include one or more wheels, which may be arranged directly on the main frame or on some form of auxiliary frame or rocker arm. "lVarking tools" can be fixed or rotating, seeding coulters, fertilizing coulters, leveling tools, flattening tools, cultivator sticks, rollers, packer wheels, cutting rollers, etc.

A "set" of tools" refers to a group of tools that are of the same type and have the same function, for example by being positioned in such a way on the agricultural implement that they fulfill the same function. For example, a set of tools can be mounted on the same carrier and in a given position in relation to other set-up tools.

Different tool sets can have tools of different types. Alternatively, two longitudinally separated tool sets can consist of tools of the same type. l\/led ""subset"" refers to a number of tools included in the first set of tools, but which is less than a total number of tools included in the first set of tools.

A transverse direction can be perpendicular to the direction of travel (F). Alternatively, the transverse direction can deviate by up to 45 degrees to the direction of travel, seen in a horizontal plane.

Preferably, all the tools included in the first set of tools are of one and the same type, such as leveling tools, harrow tines, harrow plates, packer wheels or loosening tools.

Preferably, all the tools included in the second set of tools are of one and the same type, such as leveling tools, harrow tines, harrow plates, packer wheels, loosening tools, coulters, seed plates or row units, each of which is arranged to open a seedbed, place seed in the seedbed and close the sàfàran and possibly also press into the sàfàran placer seed.

By arranging a subset of the first set of tools in front of the support wheel assembly, some weight is moved forward of the front support wheel assembly, thereby counteracting negative hook load on the traction coupling.

In addition, it becomes possible to make the tool sets located behind the support wheel assembly shorter, seen in the direction of travel, which contributes to both the weight behind the support wheel assembly being reduced and to the fact that the lever with which the tool sets operate can be reduced. This also contributes to reducing the risk of negative hook load on the towing coupling.

For example, the support wheel assembly may comprise one or more pairs of wheels, where each pair of wheels comprises a wheel on either side of the main frame. As a further alternative, the support wheel assembly can include one or more auxiliary frames or rocker arms, which in turn can support wheel axles.

All tools in the second set can be supported by at least three tool carriers, which are rotatably attached to the main frame behind said support wheel assembly.

The agricultural implement may have a center line, which is parallel to the direction of travel, whereby the first tool carrier extends in at least one direction laterally outward from the center line, with a first distance that is less than half the maximum width of the agricultural implement, whereby a first end of the second tool carrier is substantially on said first distance from the center line and wherein a second end of the second tool carrier is located at said distance from the center line corresponding to half the width of the agricultural implement. l\/led that "the second tool carrier is substantially at the above-mentioned first distance" means that an overlap may exist between the tool carriers, which overlap may be sufficient to ensure that open land over which the agricultural implement passes is processed, even when the agricultural implement turns.

The first tool carrier can be rotatable in a horizontal plane, between a working position and a transport position.

The first tool carrier can be pivotable forward in relation to the axis of rotation about which the tool carrier is pivotable.

The first tool carrier can be rotatable about a substantially vertical axis, which is located in front of the support wheel assembly.

The first tool carrier may comprise a first portion extending in a first horizontal transverse direction from the center line, such that one end thereof is located at the center line and said that its other end is located at said first distance from the center line, and wherein the first tool carrier includes a second portion , which extends in a second, opposite, horizontal transverse direction from the center line, say that one of its ends is at the center line and say that its other end is at said first distance from the center line.

The first tool carrier may comprise a first part which, in the working position, extends from a center of the power tool, seen in either transverse direction and along a direction which is substantially perpendicular to the direction of advance, and a second part, which, in the working position, extends from said center of the power tool , and along a direction which is essentially perpendicular to the direction of travel.

Each of the tool carriers can include one or more parts which are movable or rotatable relative to each other. Some such part, for example a central part, can be fixed relative to the main frame, whereby at least one part arranged laterally around the central part can be rotatable or pivotable.

The support wheel assembly may comprise a wheeled bogie assembly, which comprises a front pair of wheels and a rear pair of wheels, whereby the agricultural implement may further comprise a setting device, for controlling at least one of the front wheel pair and the rear wheel pair, and wherein the setting device may be adjustable so that essentially all the load placed on the wheeled bogie assembly is taken up by it rear pair of wheels.

A pair of wheels comprises at least one wheel on the left side of a center line parallel to the forward direction of the agricultural implement and at least one wheel on the right side of the center line, which have a common geometric axis of rotation.

A wheel bogie unit comprises at least two pairs of wheels which are mounted next to each other, in the longitudinal direction, with a wheelbase of less than, for example, 3 metres, 2.5 meters or 2 metres. A wheeled bogie assembly may, but need not, include a subframe, which may be movable relative to a main frame. The wheels and axles included in a one-wheel bogie assembly can therefore be mounted directly against the main frame of the agricultural implement.

By setting the wheel bogie assembly so that all the load is taken by a pair of rear wheels, the horizontal axis, around which the torque exerted by the load on the towing coupling acts, is moved backwards, so that the towing coupling gets a larger lever and a load located behind the wheel bogie assembly gets a smaller lever. This reduces the risk of negative hook load on the towing coupling.

It is understood that the equivalent can be used for wheeled bogie aggregates comprising more than two pairs of wheels, such as 3- or 4-axle wheeled bogie aggregates. In such applications, only the rear wheel pair can be lowered, or all wheels except the rear can be raised, in order to place all the load on the rear wheel pair.

Furthermore, it is understood that a wheel bogie assembly can be provided with so-called bogie bands, which are known per se and can run over two or more wheels. Bogie straps can be made of rubber or of metal.

The wheeled bogie assembly may comprise a rocker arm, which supports a front wheel and a rear wheel, wherein the rocker arm may be rotatable relative to the frame around a horizontal geometric axis that is perpendicular to the direction of travel, and wherein the geometric axis may be arranged between the geometry rotation axes of said front and rear wheels, whereby the adjustment device may include a limiting device, for limiting the rotatability of the tilting arm relative to the frame, say that the tilting arm is prevented in at least one direction from rotating relative to the frame.

The limiting device may comprise an actuator, such as a hydraulic actuator, which is configured to provide a force between the frame and a portion of the release arm located at a distance from the transverse geometric axis.

The limitation device can comprise an arm, which has a proximal end, which is rotatably attached relative to the frame, and a distal end, with which the hydraulic actuator is connected, so that the hydraulic actuator is operable between the frame and the distal end of the arm, whereby the arm can have an abutment portion that is aligned with the rocker arm, and wherein the arm can be adjusted with the help of the actuator between a first position, where the rocker arm is rotatable about the transverse geometric axis and a second position, where the rocker arm is at least partially prevented from being rotated about the transverse geometric axis.

The distal end of the arm can extend rearward relative to the transverse geometric axis, so that a portion of the rocker arm located behind the transverse geometric axis, in the second position, is prevented from moving upwards.

The actuator and the arm may be configured to press a rear portion of the rocker arm downwards, so that at least 80 °/> of a weight applied to the wheel bogie assembly is distributed on said rear wheel, preferably at least 90 °/> or substantially 100 °/-.~.

The adjustment device may comprise an actuator acting between the rear pair of wheels and the frame.

The adjustment device may comprise an actuator acting between the front pair of wheels and the frame.

The agricultural tool can comprise at least one transverse frame part, which supports a ground-intervening tool.

The frame can comprise a main frame and at least one relative main frame rotatably arranged side frame part.

Said side frame part can be rotatable relative to the main frame around at least one axis which is essentially parallel to the direction of travel. The frame can comprise an auxiliary frame rotatably arranged relative to the main frame.

Said auxiliary frame can be rotatable around at least one axis which is essentially horizontal and perpendicular to the direction of travel.

Said side frame part can be rotatably attached relative to the auxiliary frame around at least one axis which is substantially parallel to the direction of travel.

Said side frame part and/or said auxiliary frame can support a plurality of ground-intervening tools.

According to a second aspect, a method for handling an agricultural tool for seeding and/or soil cultivation is provided, which agricultural tool comprises a frame extending along a direction of travel, a traction coupling, arranged at a front part of the frame, and at least one support wheel assembly, arranged at a distance from the traction coupling, a first set of ground-engaging tools, which are arranged along a transverse direction of the agricultural implement, a second set of ground-engaging tools, which are arranged along the transverse direction, and which are of a different tool type than the first set of included tools. The method comprises, from a working position, retracting a subset of the first set of ground intervention tools, and subsequently retracting the second set of tools and a remaining subset of the first set of tools.

Said subset of the first set of ground engaging tools can be folded in front of the support wheel assembly, and said second set of ground engaging tools and said remaining subset of the first set of tools can be folded behind said support wheel assembly.

In the method, said support wheel assembly may comprise a wheel bogie assembly, which includes a front pair of wheels and a rear pair of wheels, wherein the method may include setting the wheel bogie assembly so that substantially all the load applied to the wheel bogie assembly is taken up by the rear wheel pair.

The wheeled bogie assembly may comprise a rocker arm, which supports a front wheel and a rear wheel, wherein the rocker arm may be rotatable relative to the frame about the horizontal transverse geometric axis, and wherein the rocker arm may be arranged between geometric axes of rotation of said front and rear wheels, wherein the method comprises: limiting the rocker arm relatively the frame, so that rotation in at least one direction about the horizontal transverse axis is prevented.

The method can further comprise increasing a vertical distance between the rear wheel and the frame, so that a greater part of a load applied to the wheel bogie aggregate is distributed on the rear wheel.

Said setting or restriction can be achieved as part of the folding operation, whereby at least one auxiliary frame part and/or at least one side frame part is folded relative to the frame between a working position and a transport position.

Said setting or limitation can be achieved by advancing the agricultural implement, i.e. a working depth for at least one ground-intervening tool carried by the agricultural implement is reduced.

Brief description of the drawings Fig. 1 shows a schematic perspective view of an industrial tool, seen clearly from behind.

Figs 2a-2c show schematic views of a wheel bogie assembly.

Figs 3a-3b show schematic side views of a crew consisting of extraction vehicles and industrial equipment.

Fig 4 shows a schematic view from above of an industrial tool.

Fig. 5 shows a schematic view from above of an industrial tool.

Fig. 6 shows a schematic view from the side of an industrial tool.

Detailed description Fig. 1 shows an implement in the form of a sowing machine 1, which comprises a frame which has at least one longitudinal frame part 100 and at least one transverse frame part 111a, 111b; 121a, 121b. The sowing machine has at least one wheel 13, a seed container 12 and a traction coupling 14, by means of which the agricultural implement can be connected to a traction vehicle, such as a tractor, to be pulled in a driving direction F.

In the example shown, the agricultural implement is a seeding machine, and in particular a seeding machine for volumetric feeding of seed.

The concepts shown herein can also be applied to precision seeding machinery as well as to other types of machinery for feeding material, particularly granular material, to ground over which the agricultural implement travels.

Furthermore, the concepts shown herein can be applied to tillage implements, such as cultivators, harrows and the like.

The frame of the agricultural implement can include one or more side parts 102, which can be folded between a working position and a transport position. For example, the agricultural implement may have two, three, four or five parts that are next to each other in the working position, and each of which can support a number of ground-intervening tools, such as row units, but also seed coulters, fertilizing coulters, leveling tools, flattening tools, cultivator tines, rollers, packer wheels, cutter rollers, etc.

Such side parts can be foldable around one or more axes which are essentially parallel to the direction of travel and preferably horizontal.

Furthermore, the frame of the agricultural implement may comprise one or more, relative to a central part, rotatable or retractable front parts and/or rear parts. For example, a front part may include leveling tools and a rear part may include packer tools, such as some form of roller.

In the case of agricultural tools with two or more side parts 102, each side part can have a front part and/or a back part, which can be foldable with the respective side part.

The agricultural implement shown in Fig. 1 has a large number of row units 2, which are arranged along two separate rows in the direction of travel F. The row units in a front row can be offset laterally relative to the row units in a row behind, so that a greater row density can be achieved than the width of the row units would allow if all row units were placed on the same row. The displacement can be of the order of 40-60 °/> of a distance between two adjacent row units in each of the rows.

Specifically, Fig. 1 shows an agricultural implement comprising a wheeled bogie 13, which will be described in more detail.

The agricultural implement has a main frame 100 and side frames 102. An auxiliary frame 101 is rotatably attached to the main frame 101 about a horizontal joint which is substantially perpendicular to the direction of travel F. Rotation of the auxiliary frame about the joint is achieved by means of a set of auxiliary frame actuators 21, The side frames 102 are each rotatably attached to the auxiliary frame around horizontal joints which are essentially parallel to the direction of travel F. Rotation of the side frames around the joint is achieved with the help of a set of side frame actuators 22, which can consist of hydraulic cylinders and which act between the auxiliary frame 101 and the respective side frame 102.

Through the above arrangement, the side frames 102 can be folded up against the auxiliary frame 101, whereby the auxiliary frame 101 is then folded forward against the main frame 100. 11 Both the auxiliary frame 101 and the side frames 102 are arranged on the rear wheel bogie 13.

The auxiliary frame 101 and the side frames 102 support a pair of tool sets 12a, 12b, which in the example shown are made up of the row units 2. The row units 2 that make up one of the tool sets 12a are arranged along a first transverse beam 121 a. The row units that make up a second of the tool sets 12b are arranged along a second transverse beam 121 b, which is arranged behind the first transverse beam 121 a.

At the lateral outermost part of the first transverse beam, a subset of a set of pre-tools 11b, here in the form of leveling tools, are arranged. This set 11b is mounted along a transverse beam 111b, which extends over part of the width of the agricultural implement.

The remaining subset of the set of pre-tools 11a is arranged on a separate transverse beam 111a, which is rotatably arranged at the main frame 100 in front of the wheel bogie 13.

The first subset of the set of pre-tools 11a is thus, for each side of the agricultural implement, arranged along the first transverse beam 111a, which is mounted in front of the wheel bogie 13 and which extends from the center line C of the agricultural implement and outwards, with a distance a1 which is less than half of the agricultural implement's maximum widthdbmax. Typically speaking, the distance a1 can be around 30-70 °/> of the maximum width of the semi-agricultural implement (not including any marker implements).

The second subset of the set of front implements 11b is, for the respective side of the agricultural implement, arranged along the second transverse beam 111b, which is mounted on the side frame 102 and extends a distance a2 which is approximately half of the maximum width of the agricultural implement minus the distance a1. With reference to figs. 2a-2c, the wheel bogie 13 will now be described more closely.

The wheel bogie 13 comprises, for the wheels on each side, a rocker arm 131, which supports at least two wheels 132, 133 for each side of the agricultural implement, and which is rotatably attached relative to the main frame 100 around a transverse horizontal geometric axis 134. The wheels 132, 133 have geometric 12 rotation axes 1321 , 1331, which are arranged in front of and behind the transverse horizontal geometric axis 134, respectively.

A limiting device 135 is arranged to limit the rotation of the folding arm 131 relative to the main frame 100, so that the rocking arm is prevented from rotating relative to the main frame. In addition, the limiting device 135 can be arranged to load the rocker arm 131 so that weight applied to the wheel bogie 13 only loads a rear 133 of the wheels.

For example, the limitation device 135 may comprise an actuator 1350, such as a hydraulic actuator, which acts between the main frame 100 and one arm 1351, whereby the arm has a proximal end 1352 which is rotatably attached to the main frame 100 or to the rocker arm 131 and a distal end 1353 to which the actuator 1350 can be attached. The arm 1351 can further have an abutment surface (not shown) for bearing against the rocker arm 131, with which the arm can be aligned.

By activating the actuator 1350 illustrated in Fig. 2c so that the piston is pushed outwards, the contact surface of the arm 1351 will come into contact with the rocker arm 131 and thus prevent this arm from turning in at least one direction.

By fully extending the piston, the rear part of the rocker arm 131 can also be pressed downwards, so that the rear part is lowered in relation to the main frame 100, whereby the front wheel 132 is lifted from engagement with the ground and all the load on the wheel bogie 13 is placed on the rear wheel 133.

The corresponding operation can be performed on the rocker arms on both sides.

By instead fully retracting the piston, the rocker arm 131 can move freely.

In Fig. 3a, the wheel bogie 13 is shown in its non-restricted position, whereby the load is evenly distributed on the front and rear wheels 132, 133. As illustrated, slightly exaggerated, by Fig. 3a, this can in the worst case lead to the tractor's drawbar being subjected to a negative hook load . l fig 3b shows the wheel bogie 13 in its limited position, with the front wheels 132 pulled up and all the load on the rear wheels. This extends the drawbar's lever arm, which contributes to reducing the risk of negative hook load on the drawbar. l fig 4 shows schematically how a first set of tools 11a, 11b can be distributed between a first subset being carried in front of the wheel bogie 13 and 13 a second subset being carried behind the wheel bogie 13 and more specifically paesidoram parts 102.

Fig. 4 also illustrates the dimension a1, which corresponds to the distance from the center line C to the lateral outer end of the first tool carrier 111a.

Fig. 4 also illustrates the dimension a2 which corresponds to the distance from the lateral inner end of the second tool carrier 111b and its outer end.

Furthermore, the agricultural implement's maximum overall width bmax is illustrated.

Normally it may be suitable to allow both subsets of the first tool set 11a, 11b to overlap somewhat, preferably enough to ensure full width machining even when the rig turns. Such an overlap can be about 2-10 °/>, preferably 3-7 °/> or about 5 °/>, of the distance from the center line C to the lateral outer end of the first tool carrier 111a, i.e. the dimension a1.

Fig. 5 shows how the front tool carriers 111a can be arranged retractably in front of the wheel bogie 13. Specifically, the respective actuators 23, säsom hydraulic cylinders, can be used to control the position of the front tool carriers 111a.

As can be seen from Fig. 5, the front tool carriers can be rotatable around, respectively, essentially vertical geometric axes, which are located in front of the wheel bogie 13 seen in the direction of travel.

As shown in Fig. 5, the front tool carriers can be divided into one, two or three sections, of which any section can be fixed and at least one can be rotatable.

As shown in Fig. 5, the tool carriers 1 1 1a can be folded forward.

Fig. 6 shows how the limiting device 135 shown with reference to Figs. 2a-2b can be used to, during driving, control the seed depth of a seeding machine equipped with a seed limiting device as well as the working depth for other types of tools and for soil-only implements.

By activating the actuator 1350 so that the rear wheel 133 is pushed down relative to the frame 100, the rear part of the frame 100 will be raised relative to the ground and the sowing depth thereby reduced. 14 By instead pulling in the actuator 1350, the rear part of the frame can be lowered to the position where both wheels 132, 133 rest against the ground, whereby the frame is lowered and the seeding depth thereby increased.

Correspondingly, the limiting device 135 can be used to set the working depth of a tilling agricultural implement, such as a harrow or a cultivator. The setting of the limiting device 135 can be synchronized with any additional support wheels, support rollers or roller rollers on the agricultural implement, to ensure that the depth of all tools is set correctly.

Claims (30)

1. Agricultural implement (1) for seeding and/or tillage, comprising: a frame (100) extending along a driving direction (F), a traction coupling (14), arranged at a front part of the frame (10), and at least one support wheel assembly , arranged at a distance from the draw coupling, a first set (11a, 11b) of ground engaging tools, which are arranged along a transverse direction of the agricultural implement, a second set (12a, 12b) of ground engaging tools, which are arranged along the transverse direction, and which are of a different tool type than tools included in the first set, whereby tools included in the first set (11a, 11b) are prioritized over tools included in the second set (12a, 12b), so that land over which the agricultural implement travels is first worked by at least one of the first set (1 1 a , 11b) included tools and then of at least one of the second set (12a, 12b) included tools, whereby a first subset (11a) of the first set of tools (1 1 a , 11b) is supported by a first tool carrier (1 1 1 a), which is rotatably attached to the main frame in front of said support wheel assembly (13), and whereby a second subset (1 1 b) of the first set of tools (1 1 a, 11b) is supported of a second tool carrier (1 1 1 b), which is rotatably attached to the main frame behind said support wheel assembly (13). 2. Agricultural tools according to claim 1, whereby all tools in the second set (12a, 12b) are supported by at least one third tool carrier (121a, 121b), which is rotatably attached to the main frame (100) behind said support wheel assembly (13). 3. Agricultural implement according to claim 1 or 2, wherein the agricultural implement has a center line (C), which is parallel to the driving direction (F), wherein the first tool carrier extends in at least one direction sideways outward from the center line (C), with a first distance ( a1) which is less than half the maximum width of the implement (bmax), wherein a first end of the second tool carrier is substantially at said first distance from the center line and wherein a second end of the second tool carrier is at said distance (a1+a2) from the center line which corresponds to half the width of the Iantbruk tool (bmax). 4. Agricultural tools according to any of claims 1-3, wherein the first tool carrier is rotatable in a horizontal plane, between a working position and a transport position. 5. Agricultural implement according to any of claims 1-4, wherein the first tool carrier (111a) is pivotable forwards in relation to a pivot axis about which the tool carrier is pivotable. 6. Agricultural tools according to any of claims 1-5, wherein the first tool carrier (111a) is rotatable about a substantially vertical axis, which is located in front of the support wheel assembly. 7. Agricultural tools according to any one of claims 1-6, wherein the first tool carrier comprises a first part, which extends in a first horizontal transverse direction from the center line, said that one end thereof is located at the center line and said that its other end is located at said first distance from the center line , and wherein the first tool carrier comprises a second part which extends in a second, opposite, horizontal transverse direction from the center line, such that its end is located at the center line and such that its other end is located at said first distance from the center line. 8. Agricultural implement according to any of claims 1-7, wherein the first tool carrier comprises: 17 a first part, which, in the working position, extends from a center of the agricultural implement, seen in a transverse direction and along a direction which is substantially perpendicular to the direction of travel (F), and comprises a second part which, in the working position, extends from the said center of the Industrial Tool, and along a direction which is substantially perpendicular to the direction of advance. 9. Agricultural implement according to any of the preceding claims, wherein the support wheel assembly comprises a wheel bogie assembly (13), which comprises a front pair of wheels and a rear pair of wheels, wherein the agricultural implement further comprises a setting device, pre-control of at least one of the front pair of wheels and the rear pair of wheels, whereby the setting device is adjustable say that essentially all the load applied to the bogie assembly is taken up by the rear pair of wheels. 10. Agricultural implement according to claim 9, wherein the wheel bogie assembly (13) comprises a rocker arm (131), which supports a front wheel (132) and a rear wheel (133), wherein the rocker arm (131) is rotatable relative to the frame (10) about a horizontal geometric axis (134) which is perpendicular to the direction of travel (F), and wherein the geometric axis (134) is arranged between geometry rotation axes (1321, 1331) of said front and rear wheels (132,133), respectively, and wherein the setting device comprises a limitation device (135), pre-limitation of the rotatability of the rocker arm (131) relative to the frame (10), so that the rocker arm (131) is prevented in at least one direction from turning relative to the frame (10). 11. Agricultural implement according to claim 10, wherein the limiting device comprises an actuator, such as a hydraulic actuator (1350), which is configured to produce a force between the frame (100) and a part of the rocker arm located at a distance 18 from the transverse geometric axis (134) (131 ). 12. Agricultural implement according to claim 10 or 11, wherein the limiting device comprises: an arm (1351), which has a proximal end (1352), which is rotatably attached relative to the frame (100), and a distal end (1353), with which the hydraulic actuator ( 1350) is connected, say that the hydraulic actuator (1350) is operable between the frame (100) and the distal end (1353) of the arm (1351), wherein the arm (1351) has an abutment portion that is aligned with the rocker arm (131), and wherein the arm (1351) is adjustable by means of the actuator (1350) between a first position, where the rocker arm (131) is rotatable about the transverse geometric axis and a second position, where the rocker arm (131) is at least partially prevented from rotating about the transverse geometric axis. 13. Agricultural implement according to claim 12, wherein the distal end of the arm extends backwards relative to the transverse geometric axis, so that a part of the rocker arm located behind the transverse geometric axis, in the second position, is prevented from moving upwards. 14. Agricultural implement according to claim 12 or 13, wherein the actuator and the arm are configured to press a rear part of the rocker arm down, so that at least 80 °/> of a weight applied to the wheel bogie assembly is distributed over said rear wheels, preferably at least 90 °/> or essentially 100 ° />. 15. Agricultural implement according to claim 10, wherein the setting device comprises an actuator acting between the rear pair of wheels and the frame. 16. Agricultural implement according to claim 10 or 15, wherein the setting device comprises an actuator acting between the front pair of wheels and the frame. 19 17. Agricultural implement according to any of the preceding claims, wherein the agricultural implement comprises at least one transverse frame part (111a, 111b; 121a, 121b), which supports a ground-intervening tool. 18. Agricultural implement according to any of the preceding claims, wherein the frame comprises a main frame (100) and at least one side frame part (102) rotatable relative to the main frame. 19. Agricultural implement according to claim 118, wherein said side frame partition is rotatable relative to the main frame (100) about at least one axis which is essentially parallel to the direction of travel (F). 20. Agricultural implement according to claim 18 or 19, wherein the frame comprises an auxiliary frame (101) rotatably arranged relative to the main frame. 21. Agricultural implement according to claim 20, wherein said auxiliary frame (101) is rotatable about at least one axis which is essentially horizontal and perpendicular to the direction of travel (F). 22. Agricultural implement according to claim 20 or 21, wherein said side frame part is rotatably attached relative to the auxiliary frame (101) around at least one axis which is essentially parallel to the direction of travel (F). 23. Agricultural implement according to any of claims 18-22, wherein said side frame part and/or said auxiliary frame supports a plurality of ground intervention tools. 24. Method for handling an agricultural implement (1) seeded and/or tillage, which agricultural implement comprises: a frame (100) extending along a direction of travel (F), a traction coupling (14), arranged at a front part of the frame (10 ), and at least one support wheel assembly, arranged at a distance from the traction coupling, a first set of ground-engaging tools, which are arranged along the transverse direction of the implement, a second set of ground-engaging tools, which are arranged along the transverse direction, and which are of a different tool type than included in the first set tools, the method comprising: from a working position, retracting a subset of the first set of ground-intervening tools, and thereafter retracting the second set of tools and a remaining subset of the first set of tools. 25. Method according to claim 24, wherein said subset of the first set of ground engaging tools is folded into the front support wheel assembly, and wherein said second set of ground engaging tools and said remaining subset of the first set of tools are folded behind said support wheel assembly. 26. Method according to claim 24 or 25, wherein said support wheel assembly comprises a wheel bogie assembly, which includes a front wheel pair and a rear wheel pair, wherein the method comprises setting the wheel bogie assembly so that essentially all the load placed on the wheel bogie assembly is taken up by the rear wheel pair. 27. Method according to claim 26, wherein the wheel bogie assembly (13) comprises a rocker arm (131), which supports a front wheel (132) and a rear wheel (133), wherein the rocker arm (131) is rotatable relative to the frame (10) about a horizontal transverse geometric axis (134), and wherein the rocker arm (131) is arranged between geometric axes of rotation (1321, 1331) of said front and rear wheels (132, 133), respectively, the method comprising: 21 limiting the rocker arm relative to the frame, so that rotation in at least one direction about the horizontal transverse axis (134) is prevented. 28. Method according to claim 27, further comprising increasing a vertical distance between the rear wheel (133) and the frame, so that a larger part of a load applied to the bogie assembly (13) is distributed on the rear wheel (133). 29. Method according to any of claims 26-28, wherein said setting or restriction is achieved as part of a folding operation, wherein at least one auxiliary frame part (101) and/or at least one side frame part (102) is folded relative to the frame (100) between a working position and a transport mode. 30. Method according to any of claims 26-29, whereby said setting or limitation is achieved during driving of the agricultural implement, so that a working depth for at least one ground-intervening tool carried by the agricultural implement is reduced.