DK159469B - TENSION MECHANISM FOR SECTIONAL DRAWING TOOLS - Google Patents

Description

in

DK 159469 B

The invention relates to a pulling mechanism for sectional earthworking tools.

In agriculture, horticulture and construction, it is 5 important to get the most work done in the shortest possible time. So far, drumming of all agricultural land for an estimated 90% has been done by extra driving. The purpose of drumming is to crush soil tubers and to pack the soil so that evaporation is reduced, and to obtain an appropriate packing of smaller stones. Experiments have clearly shown that for most crops an additional yield is obtained by drumming in direct connection to sowing. In view of the utilization of the other machinery, it has been difficult for most farmers to make this drum 15 immediately after sowing.

With the help of modern tractors, it is possible to carry heavy work tools at high speed. In soil tillage, it is often desirable, for the sake of labor savings, to bring as many implements as possible so that they can perform successive tillage processes in a single workflow. Even for tractors with high traction, there is a natural limit to the number of implements that can be carried, as it becomes a problem, especially when turning, to lift the implements coupled to the tractor.

It is an object of the invention to provide a pulling mechanism for sectional tillage tools which conveniently and in a time-saving manner allows more additional tools to be brought in addition to what is normal, without reversing this.

The pulling mechanism according to the invention is characterized by the element of claim 1. This provides a convenient and time-saving pulling mechanism, which makes it possible, for example in agriculture, to bring more

DK 159469B

2 additional tools such as a sectional drum at the same time as a combination tool consisting of a rotor harrow and a drill. The tool sections are supported by each frame on the pull mechanism and are mutually displaced in the web guide. After traversing a track, the traction mechanism is released from the tractor which is turned and on its other side is coupled to the opposite side of the traction mechanism, so that the implement sections relative to the tractor have now changed space and are carried in the opposite direction. The now rear implement 10 section, due to the features of claim 1, will rapidly change course and move behind the tractor. This moves the towing point towards the tractor's towing line. Because the implement is released from the tractor by means of the pulling mechanism, the tractor must not lift the implement during turning.

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When working on uneven terrain, each implement section must be able to follow the terrain independently of the other. Claim 2 specifies an axial bearing which permits this.

Claims 3 and 4 specify suitable embodiments of the axial bearing.

Claims 5 to 7 deal with appropriate measures of the lever arm's interaction with respective tool sections.

With reference to a preferred embodiment, the invention will be explained in more detail below with reference to the drawing, in which: FIG. 1 shows a traction mechanism in connection with a tractor with other implements; FIG. 2 shows the pulling mechanism of FIG. 1 alone; FIG. 3 schematically shows a horizontal section through an axial bearing, and 35

DK 159469 B

3 FIG. 4 and 5 show parts of an axial bearing.

A tractor 50 is permanently connected to a number of implements 52, such as e.g. a seed drill as well as in each side a catch-5 arm 40.

Frames 26, 27 are arranged to carry separate implement sections. At one end of each frame, the lever arms 13, 15 are pivotally attached to axes 28, 29. The free ends of the lever arms 10 are passed through backstops 30, 31 on the frames, thereby limiting the movement of the lever arms to rotate horizontally about the axes 28, 29. at the ends of the backing guides 30, 31 there are adjustable screws 32, 33 as adjustable end stops for the horizontal angular movement of the lever arms.

To each of the lever arms 13, 15, other lever arms 10, 12 are attached a portion 24, 25 from the pivot point 28, 29. These other lever arms 10, 12 are connected by an axial bearing 14 in succession. The axial bearing 14 allows the lever arms 10, 12 to rotate relative to one another about their common axis but ensures a bending rigid connection.

Stabilization bars 16, 21 serve to absorb considerable forces and thus to stabilize the thus-weighted angular bars 10, 13 and 12, in the horizontal plane. The stabilizing bars 16, 21 are attached to the lever arms 13, 15 and at joints 19, 22. brackets 20, 30 23 and with bolts or the like in holes 17 for a bracket 18. The brackets 20, 23 can be secured with the bolts in various of the holes 17, whereby the stabilizing bars 16, 21 can be adjusted. The bracket 18 further serves to absorb a considerable torque.

On the free ends of the lever arms 13, 15, there is a strong, upwardly extending pin 34, 35 for engagement with respective 4

DK 159469 B

tive of the catch arms 40 on the tractor.

The axial bearing 14 consists of two flanges 56, 58 fixedly mounted on each of the lever arms 10, 12. Both flanges 56, 58 have a plurality of circular arcuate slots 60 for receiving clamping bolts so that a sufficient but limited rotation of the lever arms 10, 12 is provided. is possible. In the flange 58 there is a slot 62 and in the flange 56 a central bore 63 so that a shaft 64 can be mounted in needle bearings 66. Both flanges 56, 58 are of rigid with ribs 70, being influenced by great forces. .

The effect of the lever arrangement described herein and the back-up guides 30, 31 is that the frames 26, 27 automatically shift path and are brought into parallel positions when the reversing mechanism is carried in the opposite direction.

Scaffold guides 30, 31 can be replaced by equivalent guide parts, but in the form described are particularly well suited for agricultural, horticultural and construction work.

The axial bearing 14 can be replaced by an equivalent means, for example of strong plastic material, but since there are considerable forces involved in the said work, the form described here is particularly suitable.

Since the traction mechanism is not firmly connected to the tractor but only at the traction point, the tractor will always be loaded with a traction load in the direction of travel.

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Claims (7)

1. Tensile mechanism for sectional tillage tools, characterized in that a lever arm (13, 15) with limited angular movement about a vertical axis (28, 29) is pivotally attached to each implement section, and that these lever arms (13, 15) are interconnected by means (10, 12) which fix the said lever arms (13, 15) in mutually parallel positions and that on the free end of the lever arms (13, 15) are provided for connection (34, 35) for a tractor (50). A pulling mechanism according to claim 1, characterized in that the means connecting the lever arms (13, 15) further comprise an axial bearing (14). Tensile mechanism according to claim 2, characterized in that the axial bearing (14) is provided with two flanges (56, 58. with circular arcuate slots (60) for accommodating clamping means for the flanges. Tensile mechanism according to claim 3, characterized in that the axial bearing (14) has a shaft (64) arranged in needle bearings (66) and which is passed through a bore in the one flange (56) and a slot ( 62) in the second flange (58). Tensile mechanism according to claims 1-4, characterized in that each of the lever arms (13, 15) is guided through a backing guide (30, 31) on a frame (26, 27) for attaching a tool section. 5 DK 159469 B P a t e n t k r a v: Tensile mechanism according to claim 5, characterized in that each of the backing guides (30, 31) is formed as a guide slot between two parallel bars on the respective frame (26, 27). Tensile mechanism according to claims 5-6, characterized in that the backing guides (30, 31) are provided at the ends with adjustable means (32, 33) for adjusting the limits of the angular motility of the respective lever arm.