Device for non-inversion soil cultivation and cultivators with such devices

Abstract

Device for non-inversion soil cultivation, characterized in that a first carrier (1) with a share (2) and a second carrier (3) with a roller (4) are connected to one another via a pivot joint (5) in such a way that the first carrier (1) and the second carrier (3) are two-sided levers movable relative to one another and having first lever arms (7, 8) and second lever arms (9, 10), the share (2) and the roller (4) being located on the first opposing lever arms (7, 8) of the levers, and that the second opposing lever arms (9, 10) of the levers are connected to one another via a linear drive (6).

Description

[0001] The invention relates to a device for non-inversion soil cultivation and a cultivator with such devices.

[0002] DE 92 14 874 U1 discloses a cultivator with a downstream hollow disc and crumbling roller unit. The cultivator has shares and downstream hollow rollers, whose height can be adjusted relative to a beam using an actuator with numerous holes. The tines are also connected to the beam, allowing the working depth of the tines to be adjusted using the actuator.

[0003] The publication DE 102 07 020 A1 discloses a cultivator with a frame to which spring tines with at least one spring coil are attached by means of a bracket. Devices that prevent and / or dampen swinging in the direction of travel are assigned to the spring tines. For this purpose, the frame is equipped with a three-point hitch. The cultivator can also be designed as a towed device and have a drawbar on its front. Height adjustment of the spring tines relative to the frame is not provided.

[0004] The publication DE 20 2009 005 719 U1 describes a soil tillage machine with a machine frame that can be attached to a tractor via a three-point linkage and at least one soil-engaging tool unit, in particular with a row of tines and / or discs, suspended from the machine frame. Furthermore, the machine has a trailing roller connected to the machine frame and a working depth adjustment for adjusting the working depth of the soil-engaging tool unit. To adjust the working depth of the soil-engaging tool unit, the trailing roller is height-adjustable relative to the machine frame. The height of the trailing roller is continuously adjustable using a hydraulic drive.

[0005] An agricultural machine is known from DE 103 41 757 A1. This machine comprises a frame on which at least one cultivator share is mounted, comprising a share attached to a substantially S-shaped spring element. The spring element is supported relative to the frame by a piston-cylinder unit. A support roller can be arranged in front of the share, which is firmly connected to the spring element and the piston-cylinder unit.

[0006] The invention defined in claims 1 and 9 is based on the object of simply providing a device for non-inversion soil cultivation with a height-adjustable share and a cultivator with such devices.

[0007] This problem is solved by the features listed in claims 1 and 9.

[0008] The device for non-inversion soil cultivation and the cultivator with such devices is characterized by a simple height adjustment of the share of the device and the shares of the cultivator.

[0009] For this purpose, a first carrier with a blade and a second carrier with a roller are connected to each other via a pivot joint such that the first carrier and the second carrier are mutually movable two-sided levers with first and second lever arms, with the blade and the roller located on the first, opposing lever arms of the levers. Furthermore, the second, opposing lever arms of the levers are connected to each other via a linear drive.

[0010] To implement the cultivator, several such devices for non-inversion soil cultivation are arranged in at least one row, spaced apart from one another, transversely to the working direction by means of the holding devices with a frame. Furthermore, the linear drives are connected individually or together to a control device.

[0011] The roller is, in particular, a front roller. The front roller rolls on the soil surface, and the share engages the soil to cultivate the soil. The distance between the second, opposing lever arms can be adjusted using the linear drive. Such a change also changes the distance between the share and the roller on the first, opposing lever arms, so that the height of the share relative to the soil surface can be changed by changing the distance between the share and the roller. In particular, the height between the share and the roller can be adjusted. This allows the height to be adjusted by changing the distance, and thus the depth of the share's engagement in the soil.

[0012] A linear drive is used to move the roller relative to the blade. This can be, for example, a hydraulic linear motor, an electric linear drive, an electromechanical linear motor, or a pneumatic linear drive.

[0013] Advantageous refinements of the invention are set forth in the following developments and embodiments. These can further develop the device for non-inversion soil cultivation and the cultivator with such devices individually or in combination.

[0014] In a further development, the first support can be designed as a spring tine, which is connected to a holding device via at least one spring mechanism. The spring tine has an arcuate shape, at least in some areas, so that the share can be moved parallel to the soil surface and thus within the soil. The spring mechanism can, in particular, be a spiral-shaped spring element.

[0015] In a further development, the first support can be connected to a holding device via at least one protection device against ground obstacles. The protection device can, in particular, be a vibration damper. Furthermore, the protection device can be a spring mechanism, an adjustment mechanism, or a fixed connection. This makes it, in particular, a stone protection device.

[0016] In one embodiment, the second carrier can comprise support elements connected to one another via at least one web. A portion of the first carrier is guided between the support elements. This ensures simple and stable movement of the first carrier between the support elements of the second carrier. At the same time, the linear drive can be rotatably arranged and fixed in place, at least in part, in the space between the webs, thus ensuring linear movement between the second lever arms.

[0017] In one embodiment, the linear drive can be designed as a hydraulic linear motor. In particular, this is a double-acting hydraulic cylinder. The cylinder of the double-acting hydraulic cylinder is rotatably mounted between the supporting elements of the second carrier. The piston rod of the double-acting hydraulic cylinder is connected to the second lever arm of the first carrier.

[0018] In a further development, the hydraulic linear motor can be a synchronous cylinder with a third port for flushing and calibration between the first port and the second port for moving the piston.

[0019] The roller is designed as a leading roller and, in a further development, can be equipped with a cutting disc. This cutting disc extends radially beyond the roller and cuts into the soil in front of the share.

[0020] In one embodiment, the roller can be designed to be variable in its outer diameter. For this purpose, it can have a hose attached to the hub, which can be filled or emptied with a medium. This can, of course, also be done only partially, so that different diameters of the hub and hose can be realized.

[0021] In one embodiment, the linear drives are hydraulic linear motors, at least one fluid delivery device, and a fluid-receiving tank are connected in series. The hydraulic linear drives are synchronized cylinders, so that the displaced volume of the fluid of a synchronized cylinder, acting as the respective precursor, actuates the downstream synchronized cylinder, acting as the respective follower.

[0022] An embodiment of the invention is shown in principle in the drawings and is described in more detail below.

[0023] They show: Fig. 1 a device for non-inversion soil cultivation and Fig. 2 a hydraulic plan with linear drives.

[0024] A device for non-inversion soil cultivation essentially consists of a first carrier 1 with a share 2, a second carrier 3 with a roller 4, a swivel joint 5 and a linear drive 6.

[0025] The Fig. 1 shows a device for non-inversion soil cultivation in a basic representation.

[0026] The first support 1 with the share 2 and the second support 3 with the roller 4 are connected to each other via the pivot joint 5 such that the first support 1 and the second support 3 are mutually movable two-sided levers with first lever arms 7, 8 and second lever arms 9, 10. The share 2 and the roller 4 are located on the first opposing lever arms 7, 8 of the levers. The second opposing lever arms 9, 10 of the levers are connected to each other via the linear drive 6. The first support 1 is designed as a spring tine and is thus connected to a holding device 12 via at least one spring mechanism 11. Furthermore, the first support 1 can be connected to the holding device 12 via at least one protective device 13 against ground obstacles. The protective device 13 can in particular be a vibration damper 13.

[0027] In one embodiment, the roller 4 as the feed roller 4 can have a cutting disc 14. The roller 4 can also consist of two parts, between which the cutting disc 14 is fastened. Furthermore, the outer diameter of the roller 4 can be variable. For this purpose, it can have a pneumatic tire as at least one rim.

[0028] In one embodiment, the linear drive 6 is a hydraulic linear motor 6 as a double-acting hydraulic cylinder 6. The second support 3 can have support elements connected to one another via at least one web and can thus be formed with the support elements. This allows a region of the first support 1 to be guided between the support elements. Furthermore, the cylinder 16 of the double-acting hydraulic cylinder 6 can be rotatably mounted between the end regions of the support elements, wherein the end regions of the support elements form the second lever arm 10 of the second support 3. The piston rod 17 of the double-acting hydraulic cylinder 6 is connected to the second lever arm 9 of the first support 1. As is known, the cylinder 16 has a first connection and a second connection for moving the piston in the cylinder 16.

[0029] A cultivator can comprise several devices for non-inversion soil cultivation. The devices are arranged in at least one row, spaced apart from one another transversely to the working direction, by means of holding devices 12 with a frame. The linear drives 6 of the devices are connected individually or, in particular, together to a control device.

[0030] The Fig. 2 shows a hydraulic plan with synchronous cylinders 16 in a basic representation.

[0031] In one embodiment, the hydraulic linear motor 6 can advantageously be a double-acting cylinder 6 with a third port 18 for flushing and calibrating between the first port 19 and the second port 20 for moving the piston. The third port 18 is arranged between the inlet and the outlet such that the cylinder space between the piston in the end position and the first port 20 or the second port 20 can be flushed. A check valve 21 is located between the third port 18 and the first port 19 or the second port 20. The double-acting cylinders 6 and at least one fluid-receiving tank as a pressure vessel are connected to one another one after the other and connected in series such that the displaced volume of the fluid of a double-acting cylinder 6 as the respective precursor actuates the downstream double-acting cylinder 6 as the respective follower.The pressure vessel can be connected to the liquid via a liquid conveying device with a reservoir. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 92 14 874 U1

[0002] DE 102 07 020 A1

[0003] DE 20 2009 005 719 U1

[0004] DE 103 41 757 A1

[0005]

Claims

[1] Device for non-inversion tillage, characterized by in that a first carrier (1) with a blade (2) and a second carrier (3) with a roller (4) are connected to one another via a rotary joint (5) in such a way that the first carrier (1) and the second carrier (3) are two-sided levers which are movable relative to one another and have first lever arms (7, 8) and second lever arms (9, 10), the blade (2) and the roller (4) being located on the first, opposite lever arms (7, 8) of the levers, and in that the second, opposite lever arms (9, 10) of the levers are connected to one another via a linear drive (6). [2] Device according to claim 1, characterized by that the first carrier (1) is designed as a spring tine and is thus connected to a holding device (12) via at least one spring mechanism (11). [3] Device according to at least one of claims 1 and 2, characterized bythat the first carrier (1) is connected to one or the holding device (12) via at least one protective device (13) against ground obstacles. [4] Device according to at least one of claims 1 to 3, characterized by that the second carrier (3) has support elements connected to one another via at least one web and that a region of the first carrier (1) is guided between the support elements. [5] Device according to at least one of claims 1 to 4, characterized by that the linear drive (6) as a hydraulic linear motor (6) is a double-acting hydraulic cylinder (6), that the cylinder (16) of the double-acting hydraulic cylinder (6) is rotatably mounted between the support elements of the second carrier (3) representing the second lever arm (10), and that the piston rod (17) of the double-acting hydraulic cylinder (6) is connected to the second lever arm (9) of the first carrier (1). [6] Device according to at least one of claims 1 to 5, characterized by that the hydraulic linear motor (6) is a synchronous cylinder (6) with a third connection (18) for flushing and calibrating between the first connection (19) and the second connection (20) for moving the piston. [7] Device according to at least one of claims 1 to 6, characterized by that the roller (4) has a cutting disc (14) as a feed roller (4). [8] Device according to at least one of claims 1 to 7, characterized by that the roller (4) can be changed in its outer diameter. [9] Cultivator with several devices for non-inversion soil cultivation according to claim 1, characterized bythat the devices are arranged spaced apart from one another by means of the holding devices (12) with a frame in at least one row transversely to the machining direction and that the linear drives (6) of the devices are connected individually or together to a control device. [10] Cultivator according to claim 9, characterized by that the linear drives (6) as hydraulic linear motors (6), at least one conveying device for a liquid and a liquid-receiving tank are connected to one another one after the other and are connected in series in such a way that the hydraulic linear drives (6) are synchronous cylinders (6), so that the displaced volume of the liquid of a synchronous cylinder (6) as the respective precursor actuates the downstream synchronous cylinder (6) as the respective follower.

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