RU2342824C2 - Method of picking up flax bands - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: method involves tearing flax band from flax field in the direction opposite to the motion of flax band picking up device, its following lifting and transportation. The flax band is torn off with the speed greater than the speed of flax band picking up device.

EFFECT: increasing reliability of flax band picking up process.

2 dwg

Description

The invention relates to agriculture and can be used when harvesting flax flax.

A method of selecting flax tapes by well-known flax tape pickers (A.S. USSR No. 10555395, class A01D 45/06, 1982; A.S. USSR No. 1301340, class A01D 45/06, 1985; A.S. USSR No. 1489626 , CL A01D 45/06, 1987; AS USSR No. 1214011, CL A01D 45/06, 1984) includes tearing off the flax tape from the flax, lifting and transporting it.

The disadvantage of this method of selection of ribbons of flax is the low reliability of its implementation, due to the specifics of the operations of the method. So, when lifting the flax tape for its further transportation, there is a need to raise the tape to a relatively large height, as a result of which its lifting section is in a free state. In the case of insufficient adhesion between the stems in the tape or in the presence of gaps in it, the tape falls on the flax, which leads to a violation of the technological process and the integrity of the selected tape.

A known method of selecting flax tapes (AS USSR No. 1692346, class A01D 45/06, 1991), including tearing off the tape from the flax, lifting it and transporting, while the speed of tearing off the tape is less than the speed of movement of the device.

The known method involves lifting the flax tape in the direction opposite to the direction of movement of the device. But due to the fact that the speed of separation of the tape is less than the speed of movement of the device, the separation of the flax tape from the flax occurs in the direction of its movement, and the subsequent lifting and transportation of the tape is carried out in the direction opposite to the direction of movement. This circumstance leads to the impossibility of a high-quality implementation of lifting the flax tape and transferring it to the transporting device due to the frequent falls of the tape of the stems back onto the linen during the lifting process. As a result, the reliability of the process is low.

A known method of selection of flax tapes (A.S. USSR No. 1358824, class A01D 45/06, 1987, prototype), comprising tearing the flax tape from the flax, lifting and transporting it, and flax tape being torn off in the direction opposite to the direction of movement of the device for the selection of flax ribbons.

The technical result, which consists in increasing the reliability of the technological process of selecting flax tape by a device for selecting flax tapes, can be achieved only with a certain ratio of the rotation speeds of the picking drum and the movement of the device.

The problem solved by this invention is to increase the reliability of the technological process of selecting flax tapes.

The problem posed in the invention is solved as follows. In the method of selecting flax tapes, including tearing the tape from the flax to the side opposite to the direction of the device’s movement, lifting and transporting it, tearing the flax tape from the flax is carried out at a speed greater than the speed of the device for selecting flax tapes.

The claimed method for selecting flax tapes can be implemented, for example, using a flax taping device containing a drum with fingers and a transporting and pressing device made in the form of endless belts located one above the other, the upper of which surrounds the pick drum. The fingers of the drum penetrate into the selected flax tape, detach it from the linen, lift and transfer it to the transporting-pressing device. Since the fingers of the drum move in a circle, the stems selected by the fingers located in the tape, when lifting, also move in a circle at a speed of ν _from . To prevent flax stems from falling off the fingers, the projection ν ' _{from the} speed ν _{from the} movement of the stems when rising to the direction of movement of the machine should be equal to the speed of the device ν _у at the moment of transfer to the transporting-pressing device. This ratio of speeds does not cause much stretching of the tape and gives a resulting selection speed equal to the difference between the speed of the tape being torn off and the speed of the device (ν _n = ν _from -ν _у ), ensuring the operation of tearing the linen tape from the flax in the direction opposite to the direction of movement of the device. The moment of transfer of the stems to the transporting and pressing device depends on the location of its lower belt. The position of the lower belt can be set by the angle φ of rotation of the fingers of the drum. Then ν ' _from = ν _from cosφ, and the separation rate v _from = ν _у / cosφ. To exclude the possibility of meeting the transporting-pressing device with an obstacle during operation of the device and its breakdown, the angle φ should be equal to about 45 °. Thus, it is advisable to choose the ratio of the speed of the device and the separation speed equal to 0.7 (ν _y / ν _from = cos45 ° ≈0.7). It follows that the rate of separation of the flax tape from the flax should be 1.43 times the speed of the device for selecting the flax ribbons (ν _from = ν _у / cos45 ° = ν _у / 0.7 = 1.43ν _у ). This ratio of speeds leads to the coordination of all selection operations, which in this case all carry out in the direction opposite to the direction of movement of the device. The high-quality execution of the selection operations is due to the high reliability of the technological selection of flax ribbons.

The claimed invention is illustrated by drawings.

Figure 1 shows a device for selecting ribbons of flax, side view; figure 2 shows a diagram of the speeds of the stalks of flax in the tape, when selecting.

The method of selecting flax ribbons includes the following operations:

- detachment of the flax tape from the flax in the direction opposite to the direction of movement of the device for selecting flax tapes, with a speed greater than the speed of the device, while the ratio of the speeds ν _y / ν _from = 0.7;

- rise of flax tape;

- transportation of flax tape.

The claimed method of selecting ribbons of flax is as follows.

The flax tape is torn from the flax in the direction opposite to the direction of movement of the device for selecting flax ribbons. This becomes possible because the speed ν _{from the} detachment of the tape is greater than the speed ν of _the device and the resulting selection speed ν _p is equal to the difference of these speeds (ν _p = ν _from -ν _y ). The flax tape torn off in this way is lifted and transferred to a transporting device, where it is transported to subsequent working bodies for further operations. Moreover, the speed ν _p coincides in direction with the lifting and transportation speeds, which ensures consistency and reliability of all selection operations.

The claimed method of selecting flax tapes is industrially feasible. It is implemented using a device containing a drum 1 with fingers 2, the ends of which are bent to the side opposite to the direction of movement of the device, and a transporting-pressing device made in the form of endless belts 3, 4 located one above the other. The upper belt 3 bends around the picking drum 1 and the lower belt 4 is the pulley 5 of the transporting-pressing device. The trajectory described by the ends of the fingers 2 of the drum 1, passes in front of the belt 4 of the conveying-pressing device. A drive 7 is mounted on the shaft 6 of the drum 1, transmitting rotation of the drum 1 from the tractor PTO or other power unit.

The technical result, which consists in increasing the reliability of the technological process of selecting flax tape with a device for selecting flax tape, can be achieved only if the flax tape detaches at a greater speed of the device and is characterized by a clean selection that meets agrotechnical requirements and is more than 99%, as well as integrity matched flax tape.

Claims (1)

A method of selecting flax tapes, including tearing the flax tape from the flax to the side opposite to the direction of movement of the device for selecting flax tapes, with its subsequent lifting and transportation, characterized in that the flax tape is torn off at a speed greater than the speed of the device for selecting flax tapes.

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