SE542362C2 - Plow construction - Google Patents

Abstract

Plow structure (1) comprising at least one plow bracket (8) with at least bracket for connecting the plow structure (1) to vehicles (7), which plow structure (1) comprises at least one turning mechanism (2) for controlling a mutual turning movement between a first plow part (5). ) and at least one second plow part (6). The second plow part (6) part is rotatably arranged about at least one axis of rotation (14) relative to the first plow part (5) with at least one operating device (10). At least one of the second plow part (6) and the first plow part (5), when rotating the second plow part (6) about rotation of the shaft (14), are moved in radial direction relative to the axis of rotation (14) causing the other part (14) to rotate. 6) corner (15), or corner of the first part (5), describes a movement which deviates from a circular movement.

Description

TECHNICAL FIELD The present invention relates to a plow construction in accordance with the claims.

Technical background Constructions for plowing and moving snow and the like have over the years been developed in a large number of different types of variants and designs. For example, various types of plows, dozer blades, side wings and the like have been developed for the said purposes.

In order to be able to plow with a width wider than the width of the plow or dozer blade (vehicle), wings and similar constructions intended to be connected to either the vehicle, the plow or both to the vehicle and also the plow have been developed. The side wings are usually designed so that they fold in or out in relation to the side of the vehicle. Alternatively, the wing is connected to the end of the plow or dozer blade with some type of hinge construction. This makes it possible to adjust the plow width by adjusting the angle of the wing in relation to the plow or dozer blade.

A problem in connection with plowing snow is being able to control and move the snow and also sometimes collect the snow during ongoing snow removal. For example, there is a need to collect snow at intersections and the like and move it from the intersection with the intention of eliminating that a snow string arises at the intersection. To enable the accumulation of snow, dozer blades (plows) with different wing constructions have been developed where the wings are rotatable / maneuverable around a axis of rotation at the end of the dozer blade. With these plow constructions it is usually possible to turn the wing up to at least a 100 degree angle relative to the dozer blade (plow). The said construction enables an improved function for collecting snow as well as an improved possibility for controlling where the snow is to be carried during the plowing process. However, the constructions cause a number of problems.

A problem with said wing constructions is that the wing is rotated about a fixed axis of rotation in relation to the plow, the dozer blade or the like. This means that the corner of the free end of the wing, which when plowing against the ground, will describe an arcuate movement, where the position of the right edge and corner of the wing, in relation to the transverse direction (lateral) of the vehicle, will vary during the turning movement.

The circular arc-shaped movement of the free end causes, for example, problems in connection with plowing along roads and the like where there are objects that the wing can collide with when turning. The plowing result can also be substandard due to the fact that the wing's movement pattern is arcuate.

An additional problem with existing constructions of plows (plow blades, dozer blades) and the like is the collision and crash safety of the plows. Existing types of skewed plows pose a serious risk of injury in connection with collisions. With the mentioned problems in consideration, there is thus a need for an improved crash safety for plow constructions.

Prior Art Patents SE458861, US5819444 and US5638618 describe variants of wing structures which can be turned in and out relative to the side of a vehicle.

The constructions according to the patents differ significantly in relation to the construction according to the present patent application. For example, the free ends of the wing structures, according to the patents, move in an arcuate shape when the wings are rotated. None of the constructions according to the patents solves similar problems as the construction in accordance with the present patent application.

Patent specification SE513718 describes a variant of a plow equipped with two side wings. In the plow construction described in the patent specification, the wings are connected to the ends of the plow.

However, the construction differs significantly in relation to the present construction. For example, the wings are rotated about, in relation to the intermediate blade, fixed rotation shafts, which means that the free edge of each wing during the rotational movement will perform an arcuate (circular arcuate) movement with the previously mentioned problems as a result.

U.S. Pat. No. 8,499,477 describes a variant of a plow blade which is provided at its first end with a first wing and at its second end with a second wing. Each wing is rotatably arranged relative to the plow blade. However, the construction differs to a significant extent in relation to the present construction when the wings are rotated about fixed axes of rotation and that the respective free end of the wings will thereby perform an arcuate (circular arcuate) movement when rotating.

Patent specification SE533373 describes a variant of a wing rotation mechanism for a side wing included in a wing construction. The rotating mechanism uses two actuators connected in series, one being articulated on the frame and the other on the rotating wing. The actuators are connected to each other via a separate transfer arm. The construction does not allow the right corner of the wing to move linearly or parallel to the direction of travel. The construction thus differs to a substantial extent from the construction in accordance with the present patent application.

U.S. Pat. No. 6,677,258 discloses a variant of a dozer blade construction which comprises a dozer blade and a first wing and a second wing. The first wing and the second wing, respectively, are connected to the dozer blade via at least one first link arm and at least one second link arm. The construction enables a movement of the first wing and the second wing parallel to the longitudinal direction of the dozer blade. With the construction it is possible to increase or decrease the width of the plowing surface. The construction differs substantially from the construction in accordance with the present patent application. For example, the constituent first wing and the second constituent wing are not significantly rotated relative to each other when operating them.

US20060042810 discloses a rotating mechanism comprising a first part and a second part which are rotatable relative to each other. The construction differs substantially in relation to the construction in accordance with the present patent application. For example, the construction according to patent application US20060042810 does not consist of a plow construction but of a dozer blade intended to be used connected to a grader.

US2010044062 discloses a rotating mechanism comprising a first part and a second part which are rotatably arranged relative to each other. The construction differs substantially from the construction in accordance with the present patent application. For example, the construction in accordance with US2010044062 is not a plow construction in accordance with the present patent application. The object of the present invention The object of the present patent application is to eliminate or substantially reduce at least one of the problems mentioned with the previously mentioned or mentioned in the following description with existing types of wing constructions. The object is solved with an invention in accordance with the claims.

Brief Description of the Figures The present invention will be described in more detail below with reference to the accompanying schematic drawings which, by way of example, show the presently preferred embodiment of the invention.

Figure 1 schematically shows a vehicle equipped with a plow construction seen from above.

Figure 2A shows an exemplary plow construction, without operating device.

Figures 2B and 2C show the first plow part of the exemplary plow structure and the second plow part provided with slide rails.

Figure 2D shows an exemplary plow bracket with turntable and interconnected slide rails.

Figure 2E shows cross-sections of interconnected slide rails of an exemplary embodiment.

Figure 2F shows a cross section of an exemplary rotation mechanism.

Figures 2G to 21 show plow parts with cooperating shapes in more detail.

Figure 3 shows in principle a plow construction provided with a turning mechanism, without operating device shown, in accordance with the present patent application.

Figures 4a and 4b show two variants of a first embodiment of the operating device for the turning mechanism in accordance with the present patent application.

Figure 5 shows a second embodiment of the actuating device for the turning mechanism in accordance with the present patent application.

Figure 6 shows a third embodiment of the actuating device for the turning mechanism in accordance with the present patent application.

Figure 7 shows a plow construction in accordance with an alternative embodiment with increased crash safety in collisions on the right side.

Figure 8 shows a plow construction in accordance with an alternative embodiment with increased crash safety in collisions on the left side.

Figure 9 shows a plow construction where the second plow part is rotatably arranged via a first turntable and the first plow part is rotatably arranged via a second turntable.

Detailed Description of the Invention With reference to the figures, a plow structure 1, comprising at least one turning mechanism 2, for controlling mutual rotational movements between at least a first part 3 and at least a second part 4 included in the plow construction 1, in accordance with the present patent application is described more in detail. In the embodiment shown, the second part 4 is rotated relative to the first part 3 (which is not substantially rotated during the operation, but which does not exclude that the first part is rotated in alternative embodiments).

In the exemplary embodiment, the turning mechanism 2 is used to control the relative rotation of the movement between at least two parts (at least a first part 3 and at least a second part 4) in a plow construction 1 or the like. In alternative embodiments, the rotating mechanism 2 is used to control a rotational movement, or several rotational movements, between at least two parts included in other applications and devices where corresponding needs exist.

The exemplary plow construction 1 is preferably intended to be used for plowing snow but can in alternative embodiments be used for moving other types of materials. In the exemplary plow construction 1, the first part 3 constitutes at least one first plow part 5 (alternatively wing, wing part or the like). In the exemplary plow construction 1, the second part 4 constitutes at least one second plow part 6 (alternatively second wing, wing or the like).

The plow construction 1 is preferably intended to be connected to a vehicle 7. In figure 1, the vehicle 7 is exemplified by a truck. In alternative embodiments, the vehicle 7 may be any other vehicle suitable for the purpose.

The plow structure 1 comprises at least one plow bracket 8, attachment structure or the like.

The plow bracket 8 comprises at least one bracket, such as a tool bracket, with which the plow construction is intended to be connected to at least one bracket such as a tool bracket in a vehicle 7. The figures schematically show an exemplary plow bracket. In alternative embodiments, the plow bracket may be of a different construction and shape suitable for the purpose.

The exemplary vehicle 7 is provided with a front-mounted plow structure 1 and at least one side-mounted wing structure 9. The exemplary plow structure 1 and the side-wing structure 9 are only schematically shown and are only exemplary and not limiting of the invention stench.

To enable a rotation of the second plow part 6 relative to the first plow part 5, the construction comprises at least one rotation mechanism 2 which controls the mutual rotational movement between the plow parts 6 and 5. The rotation mechanism 2 comprises at least one turntable 10, or the like to which the plow part 6 is connected. The turntable 10 is stored arranged in relation to the plow bracket 8. The turntable can, for example, be stored arranged via sliding bearings or with other storage suitable for the purpose. The turntable 10 is rotated about an axis of rotation (alternatively axis of rotation).

With reference to the embodiments shown in Figures 4 to 6, turning mechanisms 2 are shown which comprise at least one operating device 11 with which the plow part 6 is operated in relation to the first plow part 5. In alternative embodiments, however, it is conceivable that the plow construction 1 comprises two or more rotatable parts to a first plow part, whereby the plow construction may comprise two or more turning mechanisms 2.

Referring to Figures 4 to 6, variants of the operating device 11 are shown which comprise at least one hydraulic cylinder 12 which at its one end is hinged (rotatably) connected to an arm 13, lever or bracket and at its other end is hingedly connected to a bracket, or similar, in the plow bracket 8 or alternatively another part of the plow construction suitable for the purpose 1. By extending the hydraulic cylinder 12, the second plow part 6, connected to the turntable 10, is rotated in one direction. By shortening the hydraulic cylinder 12, the second plow part 6, connected to the turntable 10, is rotated in the other direction. The operating device 11 is controlled by at least one control system (not shown in figures).

The operating device 1 causes the second plow part 6 to pivot about the axis of rotation 14 an arbitrary number of degrees. In the exemplary embodiment, the second plow part 6 of the wing structure 1 pivots at least 70 degrees relative to the first plow part 5 of the wing structure 1.

Specific to the construction of the present turning mechanism 2 is that it allows the corners 15 of the plow part 6 (at least one position, after the right edge which preferably in use abuts against the ground), when turning the second plow part 6 relative to the plow part 5 or the structure, controlled during the rotational movement. In the exemplary embodiment, the corner 15 of the plow part 6 refers to the right corner 15 of the plow part in the direction of travel. In a first embodiment of the turning mechanism 2, instantaneous positions of the corners 15 of the plow part 6 during the turning movement can be controlled to describe a straight (linear) or substantially straight movement. The movement of the corner 15 can in alternative embodiments be controlled to describe another type of movement suitable for the purpose. Thus, the corner 15 of the plow part 6 can describe a movement, such as a curved movement, which deviates from a circular arc-shaped movement, that is, it describes a translating movement.

Figure 2A shows an exemplary variant of plow construction comprising a first plow part 5 and a second plow part 6. The first plow part 6 is in the embodiment connected to the plow bracket 8 via at least one turntable 10 which is stored arranged in relation to the plow bracket 8.

Figure 2B shows an exemplary second plow part 6 with associated slide rail. The plow part 6 is after a distance A in the horizontal direction uniform (same shape with respect to curvature, with the exception of the recess which allows the plow part 6 to be folded over the plow part 5). Furthermore, the plow part 6 comprises at least a second section B which has an increasing radius and height in the longitudinal direction from the first plow part 5 (for example a conical shape).

Figure 2C shows the first plow part 5. The surfaces of the plow parts 5 and 6 comprise cooperating shapes to prevent, or minimize, snow moving between the plow parts when using the plow. In the exemplary embodiment, the first plow part 5 has an increasing radius and height in the longitudinal direction towards the second plow part 6 (for example a conical shape).

In alternative embodiments, the plow parts 5 and 6 may consist of any previously known form of plow construction, plow blade, dozer blade or the like, so that these are not described in more detail in this patent application.

Figure 2D shows the plow bracket 8 connected to at least one turntable 10. At least one first turntable 10 is connected to the plow bracket 8. The figure shows a first slide rail 16 and a second slide rail 17. The first slide rail 16 and the second slide plate 17 are movably arranged relative to each other in the axial directions of the slide rails 16 and 17. The slide rails 16 and 17 are preferably stored with each other, for example via sliding bearings or with another storage method or storage suitable for the purpose.

Referring to Figure 2E, a cross section of a first slide rail 16 and a second slide rail 17 are shown interconnected. The shape of the slide rails 16 and 17 shown in the figure is not limiting but may be of another already known construction.

Figure 2F shows a cross section of a turntable 10 connected to the plow bracket 8. The shape of the turntable and the shape of the bracket may vary within the scope of protection of the present patent application. In alternative embodiments, not shown in the figures, the structure may comprise at least two turntables which are rotated about a vertical axis.

With reference to Figures 2G to 21, plow parts 5 and 6 with cooperating shapes and their function are shown in more detail. In the exemplary embodiment, the first plow part 5 and the second plow part 6 touch each other along all or part of the right end of the plow part 5, preferably the distance between the ground and the top of the right end of the plow part 5. The cooperating shapes mean that snow does not substantially "leak" between the first plow part 5 and the second plow part 6. This is achieved by the rotation shaft 14 lying in the front edge on the surface of the second plow part 6 and the right rear corner being located in the center of the rotation shaft 14 , alternatively in the vicinity of the center of the axis of rotation 14.

The outer shape of the right edge 30 of the plow part 5 must be identical or substantially identical to the inner shape of the uniform part 31 of the other plow part 6 (section A). The shape of the uniform part 31 and the edge 30 is essential for the function of the cooperating shapes, when the plow parts 5 and 6 are displaced relative to each other. In connection with rotation of the plow part 6 about rotation of the shaft 14, the edge 30 of the plow part 5 will be moved in the axial direction of the plow part 5 (distance A) caused by the mutual part of the plow part 6 and the plow part 5. The technical effect of said construction is that leakage of snow or the like is thereby prevented or limited.

Referring to Figure 3, a first embodiment of a rotating mechanism 2 is shown with which the above-mentioned function can be achieved. In the embodiment the second plow part 6 (part 4) is rotatably arranged relative to the first plow part 5 (part 3) via at least one first axis of rotation 14. In the preferred embodiment the second plow part 6 is rotatably arranged relative to the first plow part 5 around at least a first axis of rotation 14. The second plow part 6 is connected to a rotatable bracket such as a disc-shaped part 10 or other construction detail included in the plow construction.

Specifically with the present invention, the idea is that the radial position of the second wing 6 (and more specifically the right corner 15 of the wing 6) relative to the axis of rotation 14 is moved by a rotation of the plow part 6 about the axis of rotation 14. The second plow part 6 is movably arranged in the turntable Radial direction of the (rotatable member). The second plow part 6 is connected to the turntable 10 (the turntable part) via slide rails 16, 17, running rails or other construction suitable for the purpose. In the exemplary embodiment, the slide rail 17 is connected to the second plow part 6 and the slide rail 16 is connected to the turntable 10.

Referring to Figures 4A and 4B, a first exemplary twisting mechanism in accordance with the present patent application is shown. In the embodiment, the movement of the second plow part 6 relative to the first plow part 5 is controlled by the fact that the second plow part 6 comprises at least one pin 18 or the like which is guided by at least one groove 19 or the like. The pin 18 is stored arranged in relation to the groove 19 via, for example, plain bearings or other storage technology or bearings suitable for the purpose. The groove 19 comprises at least one cam curve 20 which, when rotating the second plow part 6 about the axis of rotation 14, guides the corner 15 of the second plow part 6 so that the corner 15 moves linearly or substantially linearly, or other non-circular movement. The cam curve 20 can both be connected to the plow part 6 and alternatively to other parts of the plow construction 1. Figure 4B shows, for example, a construction where the pin 18 is fixed and the cam curve 20 is movably arranged. Figures 4A and 4B show the second part 6 in dashed embodiments in different rotational positions relative to the axis of rotation 14.

The cam curve 18 is preferably interchangeable. The exchangeability is achieved, for example, by the cam curve 20 being part of a replaceable part 21. By exchanging the replaceable part 21 with the associated cam curve 20, for another replaceable part 21 with a different shape on the cam curve 20, a different movement, than said linear movement, can the corner (edge) 15 is reached.

By controlling the movement of the corner (edge) 15 of the plow part 6, which abuts the ground when plowing, to move linearly in relation to the direction of travel, the risk of something, or someone, on the side of the road being reduced. With the construction, a better plowing result is also obtained.

The first plow part 5 and the second plow part 6 have cooperating shapes which mean that the plow parts 5 and 6 can be rotated relative to each other without a gap (distance), or that a not too large gap (distance) is formed, between the plow parts 5 and 6. It is conceivable that the possible space between the first plow part 5 and the second plow part 6 is prevented by the space between the first plow part 5 and the second plow part 6 being sealed by a sealing material, or the like.

Referring to Figure 5, a first alternative embodiment of the twisting mechanism 2 is shown in accordance with the present patent application. In this embodiment of the turning mechanism 2, the controlled movement of the corner 15 of the plow part 6 is achieved, such as a linear movement in the direction of movement of the vehicle of the corner 15 of the other plow part 6, in that the turning mechanism 2 comprises at least one gear structure 22, transmission or the like. The construction of the gear structure 22 may vary within the scope of protection.

For example, the gear structure 22 may comprise (or comprise) a gear, belt transmission, chain transmission or a gear structure suitable for the purpose or combinations of said structures. In alternative embodiments, the gear or transmission comprises at least one asymmetrical gear, gear or the like. In this embodiment, the turntable 10 is provided with teeth. This embodiment of the rotation mechanism 2 also means that the corner 15 of the second plow part 6, when rotating about the axis of rotation 14, will be moved in radial direction relative to the axis of rotation 14. The figure shows the second plow part 6 in dashed designs in different rotation positions relative to the axis 14 and the plow part 5.

Referring to Figure 6, a second alternative embodiment of the present rotating mechanism 2 is shown. 14. The movement of the plow part 6 in radial direction relative to the axis of rotation 14 takes place with at least one second operating device comprising at least one second hydraulic cylinder 23 or the like.

In a further alternative embodiment (not shown in figures) the second plow part 6 can be moved in radial direction relative to the axis of rotation 14 by at least one electrically driven operating device. The electrically driven control device may, for example, comprise an electrically driven motor or alternatively comprise at least one electrically driven motor and at least one gear, transmission or the like. The embodiment assumes that the turning mechanism 2 comprises, or is connected to, a control system, which controls the position of the second plow part 6 in relation to the turning center 14 and the angle of rotation between the second plow part 6 and the first plow part 5.

In further alternative embodiments of the turning mechanism according to the present invention, it is conceivable that the controlled movement (such as said linear movement) of the corner 15, of the second plow part 6, is achieved by a link rod construction comprising at least a first link rod and at least a second link bar (not shown in figures). In alternative embodiments, it is conceivable that the relative movement between the second plow part 6 and the first plow part 5 is achieved with another technique suitable for the purpose. It is thus conceivable that the intended technical effect is achieved with sprockets or similar constructions.

With reference to Figures 7 and 8, alternative embodiments of the plow construction are shown which have an increased crash safety. Figure 7 shows in principle a collision towards the right side 24 of the plow construction, illustrated by the arrow F. Figure 8 shows a collision, illustrated by the arrow F, towards the left side of the plow. the plow bracket 8 and the second plow part 4. The rotatability between the second plow part 6 and the first plow part 5 is achieved by the construction comprising at least one bearing 26, bearing or the like. The rotation takes place around a rotation axis in the bearing.

Referring to Figure 7, a collision is shown to the right side of the plow structure 1. In the event of a collision with the plow, the force F will affect the plow structure. The corner 15 of the second plow part 6 will be moved by the force F in the longitudinal direction of the vehicle while rotating it about the axis of rotation 14. The first plow part 5 will be actuated by the second plow part 6 to be rotated in the opposite direction as the second plow part 6. the technical effect of damping the collision forces (when a distance is created to absorb the force created during the collision).

Referring to Figure 8, a collision with the left side of the plow structure is shown. In the event of a collision with the plow structure, the force F will affect the plow structure. The corner (edge) 15 of the first plow part 5 will be moved by the force F in the longitudinal direction of the vehicle while rotating about the axis of rotation in the bearing 26. The construction achieves the technical effect of damping the collision forces (when a distance is created to absorb the force created in the collision) .

The force required to trigger a rotation of the second plow part 6 relative to the first plow part 5 can be fixed or adjustable. The force required to trigger the rotation of the first plow part about the axis of rotation in the bearing 26 can also be arranged fixedly or adjustably. The force required to obtain release shall be such that it allows normal plowing with the plow structure but that this is released in the event of a collision where the collision energy exceeds a predetermined level. For example, this can be achieved by using one or more break pins (not shown in figures). Alternatively, at least one spring structure (not shown in figures) or the like may be used. Can be an air spring in the form of a pressure cylinder or the like.

Referring to Figure 9, an embodiment shows where the bearing 26 consists of a second turntable 27. With the second turntable 27 the advantage of a reduced turn out to the left is achieved which reduces the risk of aggravating damage in the event of a collision. The rotation of the first plow part 5 can take place via a bearing which consists of a second turntable 27 which is stored arranged in relation to the plow bracket 8. The first plow part 5 is in alternative embodiments possible to be moved in relation to the turntable 26 (in the radial direction of the turntable) . This can be done with the aid of at least one hydraulic cylinder, compressed air cylinder or the like. The movement can take place in that the construction comprises at least one slide rail (third slide rail) 28 or the like and at least one slide rail (fourth slide rail) 29. In the exemplary embodiment, the third slide rail 28 is connected to the first plow part 5 and the fourth slide rail 29 to the second the turntable 26. The sliding rails 28 and 29 are preferably stored with each other, for example via sliding bearings or with another storage method suitable for the purpose. This construction allows the left edge of the plow part 5 to be swung backwards during a forced movement without the left edge describing a circular movement, i.e. it can move parallel to the direction of travel without the risk of further collision with obstacles.

With the plow construction 1 in accordance with the present patent application, it is possible, for example, to collect, for example, snow at intersections and the like and move it to a place suitable for the purpose.

In alternative embodiments it is conceivable that the plow construction 1 consists of a front plow (on a vehicle) which is combined with at least one side wing comprising a function for controlling the movement of the free corner (end) of the side wing at the same time as the free corner of the front plow.

In alternative embodiments, it is conceivable that the end of the first plow part Ma (left end) comprises at least one ski, board or the like (not shown in figures). The function of the ski, or board, is to prevent the end of the plow from sliding in between two posts in the wire rails in the direction of travel of the vehicle.

In the detailed description of the present invention, construction details which are obvious to a person skilled in the art can be omitted. Such obvious construction details are included to the extent required for a proper function of the present invention to be achieved. For example, components such as, brackets, screw connections, multi-component bearings are included to the extent required to obtain a satisfactory function of the structure in accordance with the present patent application. Although certain preferred embodiments have been described in detail, variations and modifications within the scope of the invention may become apparent to those skilled in the art to which the invention pertains, and all of these are considered to fall within the scope of the appended claims. It is thus conceivable that the present invention is used for purposes and applications other than those specified in the patent application.

Corresponding problems can also exist in areas other than snow plowing where loosely composed and lighter types of materials such as wood chips, sawdust, lining and various granular materials, for example, must be brought together or moved.

In alternative embodiments, the plow construction is adapted to left-hand traffic. Said embodiments are in these cases mirror-inverted.

Advantages of the Invention With the present invention, a number of advantages are achieved. First, an improved rotation mechanism is obtained which solves, or reduces, at least one of the technical problems mentioned in the background or description. More specifically, one of the advantages of the present rotating mechanism is that when operating it does not describe an arc of a circle but a linear or substantially linear movement. Furthermore, a plow construction with an improved crash safety is obtained.

Claims (8)

Patent claims A plow structure (1) comprising at least one plow bracket (8) with at least one bracket for connecting the plow structure (1) to vehicles (7), which plow structure (1) comprises at least one rotation mechanism (2) for controlling a mutual movement between a first plow part (5), in the form of a first plow blade, and at least one second plow part (6), in the form of a second plow blade, the second plow part (6) of which is rotatably arranged about at least one axis of rotation (14) relative to the first plow part (5) and whose second plow part (6) is rotated about the axis of rotation (14) by at least one operating device (11) characterized in that at least one of the second plow part (6) and the first plow part (5), when turning the second the plow part (6) about the axis of rotation (14) is moved in radial direction relative to the axis of rotation (14) causing the corner (15) of the other plow part (6), at the ground, to describe a movement which deviates from a circular movement. Plow construction (1) according to claim 1, characterized in that the actuation of the position of the second plow part (6) in radial direction relative to the center of rotation (14) takes place with an operating device (11) comprising at least one hydraulic cylinder (12). Plow construction (1) according to one of the preceding claims, characterized in that the turning mechanism (2) comprises at least one pin (18) connected to the second plow part (6) which during turning movement is moved in a groove (19) comprising at least one cam curve ( 20). Plow construction (1) according to claim 3, characterized in that the position of the second plow part (6) in the radial direction relative to the axis of rotation (14) is controlled by the pin (18) connected to the second plow part (6) which is moved during a rotational movement in a groove (19) comprising at least one cam curve (20). Plow construction (1) according to one of the preceding claims 3 or 4, characterized in that the cam curve (20) is included in a replaceable part (21). Plow construction (1) according to claim 1, characterized in that the controlled movement of the second plow part (6) in relation to the first plow part (5) takes place with a gear construction (22) or transmission. Plow structure (1) according to claim 6, characterized in that the gear structure (22) comprises at least one asymmetrical gear. Plow construction (1) according to one of the preceding claims, characterized in that the corner (15) of the second plow part (6), in a rotation about the axis of rotation (14), is moved in radial direction relative to the axis of rotation (14), causing the the corner (15) of the second part (6) describes a linear movement.