RU207392U1 - ROTARY HARROW - Google Patents

Abstract

The utility model relates to agricultural machinery, in particular to harrows with rotating non-powered working bodies on horizontal axes. The technical result of the utility model is a reduction in labor intensity and the possibility of tool-free changeover of the hoe harrow to two different operating modes. The technical result is achieved due to the fact that the lower part of the bar is made in the form of a rectangular tube, and the shoulder of the discs in the middle part of its upper plane is connected to the bar through a rack of rectangular section inserted into the tube with the possibility of turning 180 degrees and fixing in two positions. , on horizontal axes with rigidly fixed wedge-shaped teeth with an oblique cut and an oval surface, fixed at opposite ends of the arm oriented in the direction of movement from different sides, pivotally connected through a curved bar with a trailed frame using brackets a yoke, a clamp and a spring element, the lower part of the rod being made in the form of a rectangular pipe, and the shoulder of the discs in the middle part of its upper plane connected to the rod through a rack of rectangular section inserted into the pipe with the possibility of rotation through 180 degrees and fixation in two positions.

Description

The utility model relates to agricultural engineering, in particular to harrows with rotating non-driven working bodies on horizontally located axes.

Known rotary harrow-hoe, [Copyright certificate US patent No. 5190112, IPC cl. А01В 21/04, 02.03.1993], including a battery of pairs of discs, on horizontal axes and with rigidly fixed wedge-shaped teeth with an oblique cut with an oval surface in the direction opposite to the direction of movement. The discs of the pair are pivotally connected through a curved bar with a trailed frame and are located one in front of the other, each under its own furrow. The well-known harrow-hoe does not have the necessary mechanical and strength characteristics, for the harrow of the proposed design there is a high probability of damage when harrowing agricultural land with difficult terrain, and it is low-tech and laborious to rearrange the battery from pairs of discs.

The closest analogue to the claimed is a rotary harrow-hoe [Copyright certificate RU patent No. 111952, IPC class. А01В 21/04, 2012], including a battery of pairs of discs, on horizontal axes and with rigidly fixed wedge-shaped teeth with an oblique cut with an oval surface in the direction opposite to the direction of movement, while the discs of the pair are pivotally connected through a curved bar with a trailed frame and are located one in front of the other, each under its own furrow, and the disks are made solid and fixed at opposite ends of the shoulder oriented in the direction of movement from its different sides, the shoulder is fixed on a curved bar, attached at the opposite end to the trailed frame through a hinge joint and a spring element.

The disadvantage of this design is the high laboriousness of changing the harrow-hoe to two different operating modes and the need for dismantling and assembly work with the use of a tool.

The technical result of the utility model is a reduction in labor intensity and the possibility of a tool-free changeover of the harrow-hoe to two different operating modes.

The technical result is achieved due to the fact that the lower part of the rod is made in the form of a rectangular pipe, and the shoulder of the discs in the middle part of its upper plane is connected to the rod through a rack of rectangular cross-section inserted into the pipe with the possibility of being released from the pipe, turning the disc battery when turning the rack by 180 degrees, placing the strut back into the pipe and fixing the strut into the pipe.

The specified set of essential features ensures the emergence of the claimed rotary harrow-hoe new properties, different from the prototype.

Thus, the declared features of a utility model meet the “novelty” criterion.

FIG. 1 shows a diagram of a rotary harrow-hoe in the position of the oblique cut of the teeth forward, side view; in fig. 2 - the same in the position of the oblique cut of the teeth back; in fig. 3 is a cross-sectional view A of the connection unit of the arm of the discs with the rod.

Rotary harrow-hoe, including a battery of pairs of disks 9, on horizontal axes with rigidly fixed wedge-shaped teeth 1 with an oblique cut with an oval surface fixed at opposite ends of the shoulder oriented in the direction of movement from different sides, pivotally connected through a curved bar 2 with a trailed frame 4, 6 by means of a bracket 3, a clamp 5 and a spring element 7, the lower part of the rod 2 being made in the form of a rectangular pipe 8, and the shoulder of the discs in the middle part of its upper plane is connected to the rod through a rack 12 of rectangular cross-section inserted into the pipe 8 with the possibility of releasing from the pipe 8, turning the disc battery when turning the rack 12 by 180 degrees, installing the rack 12 back into the pipe and fixing the rack in the pipe.

The work of the rotary hoe harrow is as follows.

Before the work of the rotary harrow-hoe in order to loosen the soil crust on the weed-free fields and to loosen the soil along the shoots of cultivated plants, the disc batteries are set in position with the oblique cut of the teeth back. To do this, without using a tool, the ring 11 is disconnected (Fig. 3), the finger 10 is removed, the stand 12 is released from the pipe 8, the disc array is turned to the position with an oblique cut of the teeth back, the stand 12 is inserted back into the pipe 8, and it is fixed with the finger 10 and the ring 11 ...

Before the work of the rotary harrow-hoe for the purpose of intensive loosening of the soil and the destruction of weed seedlings, by performing the above operations, the disc batteries are installed with an oblique cut of the teeth in the direction of travel.

When the rotary harrow is working in the position of the oblique cut of the teeth against the direction of movement, the soil crust is destroyed by pricking without intensive mixing and with a sparing effect on cultivated plants.

When the rotary hoe harrow is operating in the position of the oblique cut of the teeth in the direction of movement, when each tooth leaves the soil, there is an intensive extraction of soil portions in the form of gushing, the so-called microexplosion. Due to this, the soil is intensively mixed, and weed seedlings are destroyed. This position is used for continuous tillage in the absence of cultivated plants.

The proposed design makes it possible to reduce labor intensity and provide the possibility of tool-free changeover of the harrow-hoe to two different operating modes.

Sources of information:

1. Copyright certificate US patent No. 5190112, IPC class. А01В 21/04, 02.03.1993.

2. Copyright certificate RU patent No. 111952, IPC class. А01В 21/04, 2012.

Claims (1)

Rotary harrow-hoe, including a battery of pairs of discs, on horizontal axes with rigidly fixed wedge-shaped teeth with an oblique cut and an oval surface, fixed at opposite ends of the shoulder oriented in the direction of movement from different sides, pivotally connected through a curved bar with a trailed frame using bracket, clamp and spring element, characterized in that the lower part of the rod is made in the form of a rectangular pipe, and the disk arm in the middle part of its upper plane is connected to the rod through a rectangular column inserted into the pipe with the possibility of being released from the pipe, turning the disc battery when rotate the stand 180 degrees, install the stand back into the pipe, and lock the stand into the pipe.

Images