SU1563608A1 - Device for stabilizing depth of motion of digging members of root and tuber crop harvester - Google Patents

Abstract

The invention relates to the agricultural machinery industry, namely, devices for stabilizing the depth of the digging organs of the root-harvesting machines. The purpose of the invention is to reduce the loss of root crops by increasing the reliability of the transition from manual to automatic mode and vice versa. The device contains a probe 1, kinematically connected to the control valve 2 through tgu 3, hydraulic lock 4, hydraulic cylinder 7, the stem of which is connected to frame 9. The first and second lines of the hydraulic distributor are connected by an additional check valve 12 and through the first non-return valve 10 are connected to the hydraulic distributor 13 manual control. When the position of the probe 1 changes relative to the undermining organs, the depth of the undermining organs is adjusted by means of the hydraulic distributor 2 and the hydraulic cylinder 7. Using the manual control valve 13 at any time, the system can be transferred to manual control due to the additional non-return valve 12. 1 sludge.

Description

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The invention relates to agricultural machinery, intended to stabilize the depth of the digging organs of the harvesting machines.

The purpose of the invention is to reduce the loss of root crops by increasing the reliability of the transition from manual to automatic and vice versa.

The drawing shows a diagram of the proposed device.

The device includes a copy gauge 1, kinematically connected with the three-position four-line four-way hydraulic control valve automatic control 2 through adjustable length of 3, hydraulic lock 4 with piston 5 and ball valve 6, hydraulic cylinder 7, the stem of which is connected with the frame through a system of levers 8 9 undermining bodies, the first and second check valves 10 and 11, an additional check valve 12, the main hydraulic system, the output of which is for reversing the flow of oil during the transition from manual to automatic operation tanovlen control valve 13 of the manual control hydraulic lines 14-20. The valve 2 is mounted on the frame 9, on it is hinged and copying probe 1.

The device works as follows.

In the automatic control mode, the oil from the hydraulic distributor, 13 manual

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10 to drain. As a result, under the action of the oil entering the cavity, the piston of the hydraulic cylinder 7 is forcibly lowered and the depth of the digging organs is set to set.

When the copying probe 1 is lifted during the tracking of the relief, the valve spool 2 is displaced from the neutral position in the opposite direction and the pressurized oil enters the second control chamber of the hydraulic lock 4, and from it, pressing the locking ball 6, is fed into the rod cavity of the hydraulic cylinder 7, providing thereby moving the digging organs in accordance with the lifting of the probe 1.

The transition from the automatic control of the position of the undermining organs to the manual one to lift them to the transport position or to correct the ploughshare position is performed by reversing the oil flow 20 using the distributor 13. At the same time, the oil from the line 20 through the second check valve 11 enters the rod cavity of the hydraulic cylinder 7, forced lifting of the frame of the 9 digging organs. From the rodless cavity of the hydraulic cylinder 7, oil is displaced through pipeline 16 to the fourth line of the hydraulic distributor 2, through its channels depending on the position of its spool directly or through an additional check valve 12 in

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control under pressure at the pressure (for 30 line 14 and further - to the drain. Gracious mode) line 14 goes to the second control valve of the automatic control 2. When its spool is in the neutral position, i.e. in the second position (if the actual value deepening of the digging organs to a predetermined value) oil through line 15 from the first line of the hydraulic distributor 2 through the first check valve 10 is directed to the main hydraulic system and then to the drain. Due to the lack of pressure in the first control cavity of the hydraulic lock 4, its piston 5 is in the neutral position and the locking ball 6 blocks the outflow of oil from the rod end of the hydraulic cylinder 7. Thus, the presence of an additional check valve 12 g lifting bodies undertraining organs occurs at any position of the hydraulic distributor valve 2, i.e. at any given time.

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The adjustment of a given depth of undermining is carried out by changing the length of the rod 3.

The transfer of undermining organs from the transport position to the working position is carried out by switching from manual to automatic control mode. At the same time, due to the fact that the probe 1 is in the lower position with the recessed undermining organs, and the spool hydraulically extends the spontaneous lowering of the frame 9 45 of the limiter 2 also shifted from the neutral undermining organs.

The lowering of the copying probe 1 in the process of tracking the relief of the floor causes the spool of the control valve 2 to move from the neutral position down to the third position, and the oil from its fourth line enters the first control chamber of the hydraulic lock 4 and then along highway 18 to the rodless hydraulic cylinder 7. The piston 5 of the hydraulic lock 4, displaced under the pressure of oil, depresses the locking ball 6 and opens the exit of oil 55 from the rod end of the hydraulic cylinder 7 through lines 17 and 19, and then the channels of the hydraulic distributor 2 and the first return new valve

The first position “down to the third position” is the forced lowering of the plowshares. The possibility of forced lowering increases the reliability of the transition from manual control to automatic and eliminates 50 losses of tubers that were not dug up at the beginning of each rut.

Claims (1)

Invention Formula A device for stabilizing the depth of the digging organs of a root-harvesting machine, which contains a probe that is kinematically connected with the slide of a three-position four-line hydraulic distributor 10 to drain. As a result, under the action of the oil entering the cavity, the piston of the hydraulic cylinder 7 is forcibly lowered and the depth of the digging organs is set to set. When the copying probe 1 is lifted during the tracking of the relief, the valve spool 2 is displaced from the neutral position in the opposite direction and the pressurized oil enters the second control chamber of the hydraulic lock 4, and from it, pressing the locking ball 6, is fed into the rod cavity of the hydraulic cylinder 7, providing thereby moving the digging organs in accordance with the lifting of the probe 1. The transition from the automatic control of the position of the undermining organs to the manual one to lift them to the transport position or to correct the ploughshare position is carried out by reversing the flow of oil 0 using the distributor 13. The oil from the line 20 through the second check valve 11 enters the rod cavity of the hydraulic cylinder 7, forced lifting of the frame of the 9 digging organs. From the rodless cavity of the hydraulic cylinder 7, oil is displaced through pipeline 16 to the fourth line of the hydraulic distributor 2, through its channels depending on the position of its spool directly or through an additional check valve 12 in five five 0 line 14 and further - to discharge. Fortunately, highway 14 and beyond - to discharge. Due to the presence of an additional check valve, 12 g lifting of the undermining organs occurs at any position of the valve of the hydraulic distributor 2, i.e. at any time. The adjustment of a given depth of undermining is carried out by changing the length of the rod 3. The transfer of undermining organs from the transport position to the working position is carried out by switching from manual to automatic control mode. At the same time, due to the fact that the probe 1 is in the lower position with the recessed undermining organs, and the control valve spool 2 is also shifted from the neutral valve The first position “down to the third position” is the forced lowering of the plowshares. The possibility of forced lowering increases the reliability of the transition from manual to automatic control and eliminates the loss of tubers that were not dug up at the beginning of each rut. Invention Formula A device for stabilizing the depth of the undermining organs of a root-harvesting machine, containing a probe, kinematically connected with the spool of a three-position four-line hydraulic control valve of automatic control, the first line of which is connected to the drain through the first check valve and the second line to the main hydraulic system of the root and root machines, hydraulic cylinder and hydraulic lock with two control cavities, and its first control cavity is connected to the fourth line of the hydraulic distribution automatic control of bodies, and a third line Hydrodistributor through second management hydraulic lock cavity communicates with the stem cavity of the hydraulic cylinder which through WTO A swirl check valve is connected to the drain line of the main hydraulic system of the root-harvesting machine, characterized in that, in order to reduce the loss of the root and tuber crops by increasing the reliability of the transition from manual control to automatic and vice versa, the device is equipped with an additional check valve connecting the first and second lines an automatic control valve and the rodless cavity of the hydraulic cylinder is connected to the first control cavity of the hydraulic lock.