SU1410873A1 - Mounted disk harrow - Google Patents

Abstract

This invention relates to an agricultural technique. The purpose of the invention is to increase the longitudinal stability. The hinged disc harrow contains a linkage 17 of the hinge plate and a frame 1. Front 5 and rear 6 sections of the working members 7 are hinged to the longitudinal bars 8 m frames. When the harrow is lifted to the transport position, sections 5 and 6 of the working bodies 7 are shifted by introducing a harrow screws 20. One of the threaded ends of the screw 20 is pivotally connected to the stand 17 of the hinge, and the other, by means of the t 23, with the rear sections of the six working bodies 7 and, with a bow, with the frame. 6 Il.

Description

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The invention relates to agricultural machinery and can be used in agricultural engineering, in particular in mounted disc harrows.

The purpose of the invention is to increase the longitudinal stability.

FIG. I shows the harrow in the working position, top view (dashed-dotted lines show the rear sections in the transport position; in Fig. 2 - the same, Q side view; in Fig. 3 - the harrow in the transport position in Fig. 4 - section A-A in Fig. 1; in Fig. 5, section B-B in Fig. 1; in Fig. 6, section B-B in Fig. 2.

The harrow consists of a frame 1, to the middle longitudinal bar 2 of which with one end with the help of hinges 3 and 4 are attached the front 5 and rear 6 sections of the working bodies 7, the other end attached to the side longitudinal bars 8 by means of rollers 9. The side bars 8 are provided with stops 10 and brackets 11 with holes 12, into which pins 13 enter, and front 5 and rear b sections have on their outer ends buffers 14 and 15. In addition, the harrow opens from the ground and rises up.

The shift to the working position is carried out in the reverse order, while the welding of sections of the working bodies is carried out due to the increased resistance of the soil.

Changing the angles of attack of the working bodies is made in the transport position of the harrow by swapping the pins 13 in the holes 12 of the brackets 11 and simultaneously changing the length of the screw, and the greater the angle of attack, the greater the length of the screw.

In the mounted harrow, there is no possibility of self-braking and jamming of the mechanism for moving sections of the working bodies even when the harrow is working on the floor with uneven terrain, as when moving the center of gravity of the harrow to the hinge connecting the frame and the hinge rack, i.e. by reducing the moment causing movement of the sections, there is a simultaneous decrease in the angle between the frame and the rods, hence a relative increase in the component of the force producing the movement of the sections. In addition, the spring is installed between the frame and screw, soz20

the front part of the frame 1 with the help of the ball-25 gives an additional effort that contributes

16, a hitch 17 is attached to the hinged device 18 of the tractor, at the upper end of which a nut 19 is screwed, into which is screwed a screw 20 having another nut 21 connected with bolts 22 with t by screws 30, 23 which, in turn, are connected by means of universal hinges 24 to the rear sections 6 of the working members 7. At the rear end of the screw 20, there is a sleeve 25 on which the spring 26 is supported, supported by the support 27, 35 fixed to the frame 1.

The harrow is transferred to the transport position as follows.

When lifting with the attachment 1840 of the tractor, the front part of the harrow first rises, turning around the hinge 16 under. the action of the harrow mass, in the screw 20 and t gax 23 there is a force that rotates the rear sections 6 of the working bodies 7 around the joints 4 forward, 45 rolling on the rollers 9 along the longitudinal bars 8 m until the buffers 15 abut into the buffers 14, and the front sections 5 of the working bodies 7 — to the stop 10. After this changing the angle between the support and the frame and, consequently, facilitating the movement of the sections of the working bodies in the desired direction, there is therefore no need to artificially increase the weight of the harrow frame.

Installing the spring between the screw and the frame allows the spring force to vary depending on the change of the angle of attack of the disks, i.e., a larger angle of attack corresponds to a greater spring force, and vice versa.

Claims (1)

Invention Formula A hinged disc harrow, including a stand, and a frame, to the longitudinal bars of which are attached by means of vertical hinges and rollers, the front and rear sections of the working bodies, which in order to increase longitudinal stability, the harrow is equipped with a screw, one of the threaded ends of which the hinge is connected to the stand of the hinge, and the other is connected with the rear sections of the working bodies and with the help of the elastic element with the frame. five Q the harrow opens from the ground and rises up. The shift to the working position is carried out in the reverse order, while the welding of sections of the working bodies is carried out due to the increased resistance of the soil. Changing the angles of attack of the working bodies is made in the transport position of the harrow by swapping the pins 13 in the holes 12 of the brackets 11 and simultaneously changing the length of the screw, and the greater the angle of attack, the greater the length of the screw. In the mounted harrow, there is no possibility of self-braking and jamming of the mechanism for moving sections of the working bodies even when the harrow is working on the floor with uneven terrain, as when moving the center of gravity of the harrow to the hinge connecting the frame and the hinge rack, i.e. by reducing the moment causing movement of the sections, there is a simultaneous decrease in the angle between the frame and the rods, hence a relative increase in the component of the force producing the movement of the sections. In addition, the spring is installed between the frame and screw, creating 5 gives extra effort to promote changing the angle between the front linkage and the frame and, consequently, facilitating the movement of the sections of the working bodies in the right direction. Therefore, there is no need to artificially increase the mass of the harrow frame. Installing the spring between the screw and the frame allows the spring force to vary depending on the change of the angle of attack of the disks, i.e., a larger angle of attack corresponds to a greater spring force, and vice versa. Invention Formula A hinged disc harrow, including a stand, and a frame, to the longitudinal bars of which are attached by means of vertical hinges and rollers, the front and rear sections of the working bodies, which in order to increase longitudinal stability, the harrow is equipped with a screw, one of the threaded ends of which the hinge is connected to the stand of the hinge, and the other is connected with the rear sections of the working bodies and with the help of the elastic element with the frame. n 23 24 FIG. 2 23 Fig.Z J7 B 6 ten FIG. five 21 FIG. Bb Thebes. 6