SU993857A2 - Apparatus for cutting-off standing root crop tops - Google Patents

Description

(54) DEVICE FOR TRIMMING ROOT CROPS

ON THE CORN

one

The invention relates to the field of agricultural machinery, in particular to devices for trimming the tops of root crops used in machines for harvesting chicory, sugar beets, carrots and other root crops.

In the main invention of auth. St. No. 880308 describes a device for trimming root crops of root vegetables containing a frame mounted on the copying polos, carrying two rotating wheels, the vertical plane of symmetry of which is equidistant and parallel to the longitudinal vertical plane of symmetry of the devices, and each copying pole has an installed vertically and downward relative to it with a flat guide, the distance I of which to the vertical-longitudinal plane of symmetry of the device is determined from the ratio 1 0.5-0.7L.

However, rotating knives with a frequency of 400-500 rpm are not protected from breakage in the event of a meeting with stones lying in a row of root crops, and the quality of the cut is required to be improved and stabilized.

The aim of the additional invention is to improve the trimming of the tops and increase the reliability of the device.

The goal is achieved by the fact that the device is equipped with a wedge-shaped blade and passive cutting tools installed in front of the knives on the copying polos, the cutting edge of which is at an acute angle to the direction of movement of the device, the working bodies have vertically installed and disposed parallel to their cutting edge stones, while the top of the wedge-shaped blade is located on the axis of symmetry of the device, and its ends are connected to the front part

15 polozkov.

FIG. 1 is a side view of the device; in FIG. 2 - the same, top view.

The device for trimming the tops of root crops on the root consists of body 1, on which the chain drive 2 is mounted

20 knot 3 chain tension. The rotor shaft is mounted in the housing 1, the ends 4 of which extend on both sides of the housing 1. On the ends 4 of the shaft there are cutting heads 5, made in the form of a disk with fixed

trapezoidal yozhami 6. Case 1 is located on two poloks 7, made of an angular profile, the vertical shelves of which are buried in the soil, and their front ends are pointed from the lower edge at an angle L of 45-60 °. Moreover, the distance of the vertical shelves is 1 0.5-0.7 L, and the base of the vertical and horizontal shelves is B 1.8-2.4 L, where L is the distance between the vertical plane of symmetry of the knife and the said plane of symmetry of the device. The front ends of the horizontal shelves are bent upward at an angle of 45-50 °. The rotational drive to the rotor is transmitted from the tractor's transmission through the splined shaft 8 to the cardan 9 of the chain drive 2. The device is transported using a universal coupling mechanism 10.

On the upper plane of each horizontal shelf of the polozks 7, lugs 11 are installed, on which a horizontal blade 12 is mounted, made in the form of a triangular plate, the large leg of which is parallel to the longitudinal axis, and the hypotenuse at an angle of 15-30 °, and parallel to the hypotenuse on the lower plane Trapezoidal knives 13 are fixed, exactly the same as on the cutting heads 5, and vertical shields 14 are mounted on the upper plane. The lower plane of the knives 13 is higher than the lower plane of the knives 6 on the cutting heads 5 by an amount of a 3-10 mm, and the direction of rotation of the heads 5 coincides with the direction of movement of the device. The front ends of the copying polozkov 7 are interconnected by a vertical wedge-shaped blade 15, made in the form of a bent strip with an angle at the apex of 60 to 90 ° and located in the inter-row of root crops.

The device works as follows.

Using the hinged system of the tractor and the coupling mechanism 10, the device is released approximately in the middle between the rows. Due to the small area of the vertical shelves and the front pointed corner of the vertical shelf, they are buried in the soil and, when the tractor is moving, stabilize the course of the device itself. The rotation is transmitted by the slider shaft 8 through the gimbal 9 to the chain drive 2 and then to the rotating cutting heads 5. When the device moves, the knives 13 fixed on the horizontal blade 12 pre-cut the tops of the roots.

In this case, the tops are deformed in the direction of movement of the device and an inadequate shear occurs. At the approach of rotating cutting heads 5, the direction of rotation of which coincides with the movement of the device, there is a final cutting of the tops of the root crops, which by this time restores its vertical

position. This also contributes to the opposite movement of the knives 6 over the end of the root relative to the rough cutting of the tops. Thus, the final cutting of the tops is produced on the size of a 3-

10 mm lower than draft.

Encountered stones between the aisles are diverted first by a vertical wedge-shaped blade 15 to one of the sides, and then by a vertical shield 14 located on the horizontal blade 12, warning

breaking knives 6.

After cutting the tops of the root crops, digging up them can be done by a potato harvester or other agricultural crops.

Thus, the additional invention improves the cutting quality of the root-crop tops, leaving a minimum value of 3-6 mm, and increases the reliability of the device, preventing knives from breaking.

Claims (1)

Invention Formula A device for trimming tops of root crops on the vine on the author. St. No. 880308, characterized in that, in order to improve the quality of the tops and the reliability of the device, it is equipped with a wedge-shaped blade and passive cutting tools installed in front of the knives on the copying poloski, the cutting edge of which is at an acute angle to the direction of movement of the device, the bodies have vertically mounted and parallel to their cutting edge guards for removal of stones, with the top of the wedge-shaped blade located on the axis of symmetry of the device, and its ends with connected to the front of the polozkov.