SU15252A1 - Device for attaching a wheelless soil tillage implement to a tractor - Google Patents

Description

The present invention is intended to connect the tractor with the help of known parts with wheelless tools for tillage, for example, with swiveling plows, while the latter can be easily turned and moved back. For this purpose, a three-arm support arm is mounted on the tractor, adapted to connect the tillage implement with the tractor and rotating in a vertical plane. The counterweight acts on the support lever, which balances the implement for tillage.

In the schematic drawing of FIG. 1 is a side view of the proposed device with a raised plow; FIG. 2 is a top view of its Vi of FIG. 3 is a view from above of the part for lateral interchange of plowshares.

On the rear part of the tractor frame, with a bolt 1, a rotating horizontally rotating tractor 2 is fastened with a bolt 1 to which a three-arm arm 4 is connected through a joint 3, rotating in a vertical plane (Fig. 1 and 2). The arm 5 of the arm 4 is provided with a horizontal hinge b, with which the pulley 7 of the plow is fixed in such a way that it can rotate in a vertical plane (Fig. 1). Dishl 7 is provided with a forked forked forked part 8 with a bolt 9 serving as an abutment limiting the turns of the drawbar relative to the lever 4. There is a roller 10 installed in the drawbar equipped with a forked bar 11 to which the frame 12 of a rotary plow or other tillage tool (Fig. 2) . The middle shoulder 13 of the lever 4 is connected by means of a chain 14 to the shoulder of the lever 15, mounted on the shaft 16 mounted on the frame of the tractor. The chain 14 enables the horizontal rotation 2 around the bolt 1. The shaft 16 is also provided with two levers 17 with weights 18 serving to balance the plow arm supported by the lever 4.

On the same part of the tractor frame, a forked shoulder 19 is fastened, between whose fingers a support part 20 for a screw 21 is installed, having the possibility of rotating in a vertical plane. A block 24 with a nut 23 is attached to one of the levers 17 with a load. In order to move it in the vertical plane, a screw 21 is passed through the nut. When the screw 21 is turned, produced by the handle 25, one of the levers 17 is moved with the load; this achieves the rotation of the shaft 16, as well as through the lever 15 and the chain 14, the lever 4 together with the drawbar 7 and the bar 11. Thus, the plow is raised and lowered.

The rotation of the rotary plow with a change in the direction of its movement is carried out with the help of a mechanical device consisting of a worm gear 26 fastened to the roller 10 and an screw 27 connected to this wheel and rotated by the handle 28. In this case the frame 12 of the plow is set by rotation of the handle 28 such that the protrusion 29 fastened on the bar 11 is adjacent to one of the two stops 30, limiting the movements of the plow frame 12. The position of the lugs 30 can be changed by means of screws 31 equipped with cranks so that the coulters can be installed in different working positions (Figs. 2 and 3).

In order to transfer the plow from the position in which it is being transported and which in FIG. 1 is shown in solid lines into the working position, the handle 25 is rotated so that the load lever 17 rotates upward, and the lever 15 and the lever 4 connected to it by means of a chain 14 are lowered. At the same time, the plow supported by the lever 4, due to its own weight, penetrates into the soil, and its immersion depth is regulated by the appropriate rearrangement of the screw 21, the stop bolt 9 is positioned so that

those positions that the plow can occupy between the transport position and the position with the shallowest plowing, are adjacent to the support arm 4. If plowing is deeper, the plow remains horizontal and the stop bolt 9 is at some distance from the support arm 4. At the end of the furrow, the rotation of the screw 21, the lever 17 with the load 18 is brought to the position corresponding to the carriage, and then, after driving into the new furrow, by rotating the handle 28, the plow is lowered again.

The subject of the patent.

1. A device for attaching a wheelless soil-cultivating tool to a tractor, characterized by cumulative use: 1) lever 4, used to connect the plow to the tractor frame through hinges b and 3 and pivot near the bolt 1 ton 2, 2) lever 15 to support the tool with chains 14, 3) of the levers 17 with weights 18 y balancing the gun and 4) for moving the nut 23 and the lever 17 connected with it in order to raise or lower the gun (Figs. 1 and 2).

2. With the device specified in clause 1, a mechanism for rotating the plow bodies, characterized by the use of a screw 27 with a handle 28, designed to be rotated by means of a worm gear 26, a roller 10 together with a plow frame 12 fixed on the last front bar 11 the angle of rotation of which the tongue 7 of the plow is equipped with adjustable screws with screws 31 by stops 30 for the protrusion 29 of the bar 11 of the plow frame (Fig. 1, 2 and 3).