Spring tine arrangement

Abstract

Spring tine arrangement (10) for agricultural devices such as cultivators, harrows or the like, with a spring tine (16, 17) to be fixed to a support arm (11) of the arrangement (10) which ends freely on one side, with a fastening arm (18, 19) which is round in cross-section and with a working arm (3) of the one-piece spring tine (1) which is provided with a share (4) and which is circularly bent once between the fastening arm (2) and the working arm (3) free from the support arm (11).

Description

[0001] The invention relates to a spring tine arrangement for agricultural devices such as hoes, harrows, cultivators, harrows or the like.

[0002] Spring tines are found in a wide variety of agricultural equipment. Spring tines are used not only in soil cultivation, but also in so-called pick-up harvesting machines, such as combine harvesters, loader wagons, and the like.

[0003] The fundamental problem with these agricultural devices is that if a tine hits a solid obstacle, such as large stones, rocks, or the like, in the direction of soil cultivation, usually in the direction of travel of the device's tractor, the device can be damaged. Although this problem is addressed by the resilient properties of a spring tine, which has replaced previous shear bolts, the spring effect is often limited.

[0004] Another problem is the often rigid arrangement of the spring tines, which can only be changed with considerable effort, for example when removing weeds between rows of different vegetables.

[0005] Against this background, the invention aims to provide a spring tine arrangement that is cost-effective to manufacture, very versatile and easy to adjust.

[0006] This technical problem is solved by the subject matter according to claim 1.

[0007] Claim 1 specifies that the spring tine is formed in one piece with a mounting arm with a round cross-section, which can be easily secured to a support arm with a free end on one side, for example, with a clamp. This allows, among other things, a quick and easy replacement of the spring tine.

[0008] This is facilitated by the further measure that the spring tine, once between the fastening arm and the working arm provided with a share, is designed in particular for soil cultivation, is circularly curved free from the support arm, in which, unlike in many other known spring tine arrangements, the circular arc is not penetrated by a support.

[0009] In particular, the spring tine arrangement according to the invention allows the fastening arm to be axially and / or radially adjustable in a receptacle of the support arm.

[0010] This advantageously results in a multitude of adjustment options for the spring tine arrangement according to the invention.

[0011] The axial displacement allows for quick adjustment to different spacing or widths of planting rows, while twisting the mounting arm changes the penetration depth and angle of the share into the soil.

[0012] The design provides for the mounting arm to be received in at least one continuous opening, e.g., a bore, in the support arm and to be secured by at least one screw inserted radially to the bore. A support arm made of square tubing is preferred, providing a cost-effective solution since standard semi-finished products can be used for production.

[0013] In practice, it has been found that a single bolt, for example, M20, with a lock nut fixed in the square tube is sufficient for securing the mounting arm. Alternatively, if the square tube has sufficient wall thickness, the bolt can also be inserted into a threaded hole.

[0014] Preferably, the aperture is further provided with respect to a surface of the support arm, and the inlet and outlet openings are axially spaced apart. By rotating the mounting arm, the direction of rotation of the raised soil with respect to the working direction can then be adjusted, particularly in the case of a working arm equipped with a symmetrical blade.

[0015] As a further design feature, the support arm is L-shaped in side view, with a vertically rising first leg that is to be secured to the device and a horizontal second leg extending against the processing direction and featuring at least one spring tine. This is a simple yet very stable design with easy accessibility.

[0016] A further advantage of the design of the support arm is that the second leg can have two oppositely positioned openings for the fastening arms of two spring tines, so that the leg can be enclosed by two spring tines whose fastening arms extend equally with respect to the processing direction, seen from the free ends of the fastening arms.

[0017] This is particularly true in that, in the operating position, the mounting arm extends horizontally and, as seen from the free end, against the working direction. The free end of the working arm will then advance in the working direction of the circular bend. This design of the spring tine allows the spring tine to deflect considerably when encountering an obstacle due to the elastic expansion of the circular bend.

[0018] The spring tine can be manufactured cost-effectively using a solid material with a round cross-section.

[0019] The diameter of the solid material between 15 mm and 20 mm has proven to be sufficient, which means that commercially available semi-finished products can be used.

[0020] Particularly for a cultivator for cultivating the topsoil of a soil, a radius of the circular bend between 15 cm and 20 cm has proven to be useful.

[0021] The spring tine arrangement according to the invention is further explained with reference to the drawing, which shows only one exemplary embodiment. The drawing shows: Fig. 1: a side view of a spring tine, Fig. 2: a view according to arrow II in Fig. 1, Fig. 3: a top view, Fig. 4: an isometric representation, Fig. 5: a simplified, side view of the spring tine arrangement according to the invention and Fig. 6: a top view of the spring tine arrangement according to Fig. 5

[0022] Based on the Fig. 1 to 4, a spring tine 1 for the spring tine arrangement 10 is first selected according to Fig. 5 and Fig. 6 explained.

[0023] Fig. Figure 1 shows a side view of a spring tine 1 for a cultivator, for example. The spring tine 1 is securely attached to the device with a horizontally extending mounting arm 2. A working arm 3 is used for soil cultivation, here with a merely indicated symmetrical share 3, which, however, can also be designed differently.

[0024] The spring tine 1 is made of a solid material with a round cross-section and has a single circular bend 5 between the mounting arm 2 and the working arm 3. The diameter of the bend 5 is between 15 cm and 20 cm, and the diameter of the spring tine 1 is between 15 mm and 20 mm. The free end with the share 4 of the working arm 3 leads the spring tine 1 in the working direction. The angle of attack between the working arm 3 and a horizontal plane through the mounting arm 2 is more than 100 degrees, for example, 110 degrees.

[0025] Such spring tines 1 are part of a spring tine arrangement 10 according to the non-scale Fig. 5 and Fig. 6.

[0026] The spring tine arrangement 10 has a in a side view according to. Fig.5 L-shaped support 11 made of square tubes. A first leg 12, which rises vertically in a use position, is attached to the device, preferably adjustable in height. An eyelet 13 on the top serves to accommodate a locking pin.

[0027] A second leg 14, which extends freely and horizontally against the working direction according to arrow 15, is enclosed by two spring tines 16, 17 which are only indicated.

[0028] The horizontally extending fastening arms 18, 19 of the spring tines 16, 17 are fixed in slot-like openings 20, 21 and, as seen from the free ends 22, 23, are equally directed against the machining direction according to arrow 15.

[0029] In the openings 20,21 the fastening arms 18,19 are fixed by screws 24,25 which are countered by nuts 26,27 fixed to the inside wall.

[0030] The openings 20, 21 in the vertically rising side walls 26, 27 are set in opposite directions in one plane. Consequently, the openings 30-33 of the openings 20, 21 in the side walls 26, 27 are also offset in opposite directions relative to an axis 34 of the second leg 12. List of reference symbols: 1 spring tine 2 mounting arms 3 working arms 4 flock 5 Bend 10 spring tine arrangement 11 Support arm 12 first leg 13 eyelets 14 second leg 15 Arrow processing direction 16 spring tines 17 spring tines 18 Mounting arm 19 Mounting arm 20 Breakthrough 21 Breakthrough 22 End 23 End 24 screw 25 screw 26 Mother 27 Mother 28 side wall 29 Side wall 30 Opening 31 Opening 32 Opening 33 Opening 34 Axis

Claims

[1] Spring tine arrangement (10) for agricultural devices such as cultivators, harrows or the like, with a spring tine (16, 17) to be fixed to a support arm (11) of the arrangement (10) which ends freely on one side, with a fastening arm (18, 19) which is round in cross-section and with a working arm (3) of the one-piece spring tine (1) which is provided with a share (4) and which is bent in a circle once between the fastening arm (2) and the working arm (3) free from the support arm (11). [2] Spring tine arrangement (10) according to claim 1, characterized by that the fastening arm (18,19) is axially and / or radially adjustable in a receptacle of the support arm (11). [3] Spring tine arrangement (10) according to one or more of the preceding claims, characterized bythat the fastening arm (18, 19) is received in at least one continuous opening (20, 21) of the support arm (11) and can be fixed by at least one screw (24, 25) inserted radially to the opening (20, 21). [4] Spring tine arrangement (10) according to claim 3, characterized by that the opening (20,21) is positioned relative to a surface of the support arm (11) and the inlet and outlet openings (30-33) are axially spaced apart. [5] Spring tine arrangement (10) according to one or more of the preceding claims, characterized by that the support arm (11) is L-shaped in a side view with a vertically rising first leg (12) to be fixed to the device and with a horizontal second leg (14) extending against the processing direction (15) and having at least one spring tine (16, 17). [6] Spring tine arrangement (10) according to claim 5, characterized bythat the second leg (14) has two oppositely positioned openings (20,21) for the fastening arms (18,19) of two spring tines (16,17). [7] Spring tine arrangement (10) according to one or more of the preceding claims, characterized by that in a position of use the fastening arm (18,19) extends horizontally and against the machining direction (15). [8] Spring tine arrangement according to one or more of the preceding claims, characterized by that the free end of the working arm (3) leads in the machining direction of the circular bend. [9] Spring tine arrangement according to one or more of the preceding claims, characterized by a spring tine made of a round solid material. [10] Spring tine arrangement according to claim 9, characterized by that the diameter of the solid material of the spring tine (1) is between 15 mm and 20 mm. [11] Spring tine arrangement according to one or more of the preceding claims, characterized by that the radius of the circular bend (5) of the spring tine (1) is between 15 cm and 20 cm.

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