JPH0144038Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a threshing device such as a combine harvester, which is equipped with a reaping section and a threshing section and continuously harvests and threshes grain culms. Conventionally, as shown in Japanese Utility Model Application Publication No. 56-96948, there has been a technique for changing the processing amount depending on the amount of third hole loss. Furthermore, as shown in Japanese Patent Application Laid-Open No. 56-39716, there is a technique for changing the rotation speed of the processing cylinder in order to change the processing amount.

However, since the above-mentioned conventional technology does not provide a processing cylinder between the rear end of the oscillating sorting board and the third port, it is not possible to reduce the third port loss simply by changing the rotation speed of the processing cylinder. In addition, since the processing cylinder rotation speed is not increased due to an increase in the third mouth loss, there are problems such as the fact that the third mouth loss cannot be reduced and the third mouth straw waste discharge adjustment cannot be achieved only by controlling the rotation of the processing cylinder. It was hot.

However, the present invention is a threshing device in which the processing cylinder is installed in a direction substantially perpendicular to the rear side of the handling cylinder, and is equipped with a grain loss sensor that detects grain loss at the third port, and also includes a grain loss sensor that detects grain loss at the third port. The present invention is characterized in that a processing cylinder is disposed between the mouths, and the rotation speed of the processing cylinder is increased as grain loss increases based on the detection result of the grain loss sensor.

Therefore, since the processing cylinder is installed between the third port at the rear end of the swing sorting machine, it is easy to adjust the grain loss at the third port and the amount of straw waste discharged from the third port by simply controlling the rotation of the processing cylinder. In addition, since the rotation speed of the processing cylinder is increased due to the increase in grain loss, the amount of grain loss at the third port can be instantly reduced, and the amount of grain loss at the third port can be maintained at a value other than the setting. Therefore, straw waste can be efficiently discharged.

Embodiments of the present invention will be described in detail below based on the drawings.

Fig. 1 is a side view of the combine harvester, and Fig. 2 is a plan view of the same. In the figure, 1 is a truck frame to which a running drive transmission 2 is attached, and 3 is a drive sprocket installed on both sides of the truck frame 1 via a running drive sprocket 4. 5 is a machine base supported by the track frame 1; 6 is a threshing section in which a feed chain 7 is stretched on the left side and a handling cylinder 8 is built in; Machine stand 5
14 is a straw cutter that faces the end of the straw removal chain 15; 16 is a straw collection table; 17 is an engine that drives each part of the combine; 18 2 is a paddy tank that faces the grain lifting cylinder 19 and stores the grains taken out from the threshing section 6; 20 is a driver's cab equipped with a driver's seat 21 and a driving operation section 22; side clutch levers 23, 23 and a reaping and threshing clutch lever; 2
4 and 25 are provided in front of the driver's seat 21, and a traveling speed change lever 26 is installed inside the driver's cab 20 on the left side of the driver's seat 21, so that grain culms are continuously harvested and threshed.

FIG. 3 is a cross-sectional side view of the threshing section 6, and FIG. 4 is a cross-sectional front view of the same. In the figure, 27 is a handling chamber in which an axial-flow type handling barrel 8 is installed, which is axially mounted in the longitudinal direction of the machine body; 2
8 is a crimp net stretched below the handling chamber 27;
Reference numeral 29 denotes a swinging sorting board that is supported swingably in the front and rear directions via swing links 30 and the like, and includes a feed pan 31 located below the crimp net 28 and a feed pan 31 located below the crimp net 28 and the dust exhaust port 32. The swinging sorting board 29 is constituted by the chaff sheave 33 that is positioned and the sorting net 34 that is positioned below the chaff sheave 33.

Further, in the figure, numeral 35 is a fan that sends sorting air in the direction of the sorting net 34, and 36 is a fan that is installed inside the first sorting gutter 37 and takes out the grains into the paddy tank 18 through the grain lifting tube 19. Number conveyor, 38 is second sorting gutter 3
9 is an internally installed second conveyor which returns the second reduced material to the handling chamber 27 via the second reducing thrower 40; 8, a processing cylinder is mounted on the right and left sides of the machine so as to be orthogonal to the processing cylinder 41, 42 is a concave which is a receiving net disposed on the lower peripheral side of the processing cylinder 41, 43 is a straw discharging cutter provided on the concave 42, and 44 is a The processing cylinder 4
A dust suction/exhaust fan, which is a cross-flow fan, is installed diagonally above the rear of the machine; 45 is a third port for discharging dust and straw to the outside of the machine via the fan 44; This is a fourth gutter constructed above the processing cylinder 41 and the fan 44 to guide the waste straw to be carried out. In addition to taking out the paddy into a tank 18, the structure is such that waste straw is discharged by a straw removal chain 15 and straw waste etc. are discharged from the machine by the fan 44.

In addition, the sieve wire 47 at the rear end of the oscillating sorting board 29 is made to face the starting end of the concave 42, and the concave 4
A guide plate 48 is suspended below the concave 42 at the starting end, and a lower processing adjustment plate 4 is installed at the rear end of the concave 42.
9 are removably connected, and an upper processing adjustment plate 50 is attached to the suction side of the fan 44 on the lower surface of the fourth gutter 46, and the straw waste etc. sent to the rear end of the swing sorting board 29 is removed by the processing cylinder 41. The grain is reprocessed and transferred to the second trough 39 via the concave 42 and to the fan 44.
The structure is such that the straw is discharged from the third opening 45.

Further, a continuously variable pulley 5 is connected to the processing cylinder shaft 51 of the processing cylinder 41 and the fan shaft 52 of the fan 44.
As shown in FIG. 4, a threshing drive belt 55 is stretched around the pulleys 53 and 54, and variable speed motors 56 and 57 are provided to operate the pulleys 53 and 54 at variable speeds. The pulley 5
The output screw shafts 59 of the motors 56 and 57 are connected to the speed change arms 58 of the motors 5 and 54.
6 and 57 are limit switches 60, 61 and 6
2 and 63 for drive control.

On the other hand, the chaff sheave 33 is connected to a plurality of horizontal beams 64.
As shown in Fig. 5, each of the horizontal bars 64... which is horizontally suspended in the left-right direction is attached to a fulcrum shaft 65 so that the inclination angle can be changed freely, and each of the horizontal bars 64... ...The gap between them is formed so that it can be enlarged or reduced freely, and each horizontal bar 64... is connected to an angle adjusting rod 66.
and one end of the connecting rod 66 is connected to the angle adjusting arm 67. Further, a spring 68 that raises the horizontal bars 64 and increases the distance between them is connected to the arm 67, and the horizontal bars 64 resist the spring 68.
An angle adjustment motor 69 is provided to adjust the interval between them by changing the inclination angle of the motor 69, and an angle adjustment arm 67 is connected to the output swing arm 70 of the motor 69 via a wire 71. 6
9 is configured to be driven and controlled by limit switches 72 and 73.

Next, a pressure-sensitive grain loss sensor 74 for detecting grain scattering from the third port 45 is attached to the third port 45.
Attach to. As shown in FIG. 6, the power supply 75
a key switch 76 that applies a signal, comparators 77 and 78 that compare and detect the output of the grain loss sensor 74 to determine the grain loss situation, reaping and threshing switches 79a and 80a that are linked to the levers 24 and 25, and automatic a pulse oscillator 82 connected in series to the control switch 81; AND gates 83 and 84 to which the respective outputs of the comparators 77 and 78 and the oscillator 82 are applied; and the respective gates 8
3 and 84 via drive circuits 85 and 86, and a speed increase and deceleration switch connected to the variable speed motor 56 that adjusts the rotational speed of the processing cylinder 41 and switched by the power relays 87 and 88. 89, 90, and a manual switch 9 for selectively operating each of the drive circuits 85, 86.
1, and automatic stop switches 92 and 93 that stop the outputs of the AND gates 83 and 84 in conjunction with the operation of the switch 91, based on the output of the grain loss sensor 74 or when the manual switch 91
Through the operation, the rotation of the processing cylinder 41 is increased or decreased, grain loss from the third port 45 is reduced, and the processing cylinder 41 is
The structure is designed to reduce straw stagnation.

Further, as shown in FIG. 6, each of the levers 24,
reaping and threshing switch 79b linked with 25;
80b and a work switch 94 installed at the entrance of the handling chamber 27 of the threshing section 6 to detect the threshing culm are connected in series, and each switch 79b, 80b, 94 is connected to the drive circuit 85 via the monomulti 95, and each switch 79b, 80b and 94 are connected to the drive circuit 86 via a delay circuit 96 and a monomulti 97, respectively, and deceleration and speed increase switches 98 and 99 switched by power relays 87 and 88 are connected to the variable speed motor 57 for sucking and discharging dust. Similarly, slow and steep tilt switches 100 and 101, which are switched by power relays 87 and 88, are connected to the angle adjustment motor 69, and each limit switch 60 and 6
The power relay 87 is operated by the monomulti 95 only for the time necessary to turn off the switches 3 and 72, and the output is generated in the delay circuit 96 with a delay of the time necessary from starting to steady operation. The mono-multi 97 is operated for the time necessary to rotate the motors 56, 57, 69 back to the reference position, and each motor 57, 69 is operated for the time necessary for the mono-multi 97 to return to the OFF state after the operation of the mono-multi 95. The timer relay 102 that applies the power source 75 to the work switch 94 is linked to the work switch 94. Since the amount of grain is small at the start of harvesting work, the interval between the horizontal bars 64 is made small, and the exhaust force of the dust suction/exhaust fan 44 is reduced. The second conveyor 38 is configured to reduce the rotation speed of the processing cylinder 41 and increase the second processing amount by the processing cylinder 41 and the second conveyor 38. Further, as is clear from FIG. 3 and the like, the threshing device in which the processing cylinder 41 is provided in a direction substantially orthogonal to the rear side of the processing cylinder 8 is provided with a grain loss sensor 74 for detecting grain loss at the third spout 45. At the same time, the processing cylinder 41 is disposed between the rear end of the swing sorting board 29 and the third port 45, and the rotation speed of the processing cylinder 41 is increased based on the detection result of the grain loss sensor 74 as the grain loss increases. It is composed of

This embodiment is constructed as described above, and when the grain culms are continuously harvested and threshed, the grains leaking from the crimp net 28 at the bottom of the handling chamber 27 are transferred to the feed pan 31, chaff sieve 33, and sorting net 34. It falls to the first sorting gutter 37 through the first conveyor 3.
The paddy is taken out to the paddy tank 18 via the paddy 6 and the lifting cylinder 19. Further, the straw waste that falls from the crimp net 28 and the dust outlet 32 is sent to the rear of the upper surface of the chaff sheave 33, and is sucked and discharged by the fan 44. In addition, the grains with stems are introduced into the outer periphery of the processing cylinder 41, and are threshed between the processing cylinder 41 and the concave 42 below, and small straw waste, which is the second reduction product, is mixed in. The grains fall from the concave 42 onto the upper surface of the second sorting gutter 39 and are returned to the handling chamber 27.

When the amount of grains scattered from the third port 45 increases during the harvesting operation, this is detected by the grain loss sensor 74, and the power relay 87 is activated via the comparator 77 and the AND gate 83, etc., and the variable speed motor is activated. 56 drive, the rotation speed of the processing cylinder 41 is increased, the amount of grains collected from the concave 42 is increased, and the loss of grains at the third port 45 is reduced. On the other hand, the grain loss sensor 74 detects that there is almost no grain scattering from the third port 45, and the comparator 7
8 and power relay 88 via AND gate 84
is activated, the motor 56 is reversed to reduce the rotation of the processing cylinder 41, and the processing cylinder 4 is rotated at high speed.
To remove straw waste that wraps around 1 and stagnates in that area,
This is to prevent straw clogging, etc., and the number of scattered objects at the third opening 45 is kept approximately constant by detection by the grain loss sensor 74.
This is to maintain the sorting process in the processing cylinder 41 in an appropriate state. Note that the work switch 94 is
It may be provided during transportation of the reaping section 9 or below the crimp net 28. As is clear from the above embodiments, the present invention allows the processing cylinder 8 to be moved in a direction substantially orthogonal to the rear side of the processing cylinder 8.
1 is provided with a grain loss sensor 74 for detecting grain loss at the third port 45, and a processing cylinder 41 is disposed between the rear end of the swing sorting board 29 and the third port 45. Glen loss sensor 74
It is configured to increase the rotation speed of the processing cylinder 41 due to an increase in grain loss based on the detection result of the processing cylinder 41. It is possible to easily adjust the grain loss of the third port 45 and the amount of straw waste discharged from the third port 45 by simply controlling the rotation of the processing cylinder 41, and also increase the rotation speed of the processing cylinder 41 as the grain loss increases. Therefore, the amount of grain loss at the third port 45 can be instantly reduced, and the amount of grain loss at the third port 45 can be maintained at a value other than the setting, and straw waste can be efficiently discharged. It has a certain effect.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is an overall side view of the combine harvester, Fig. 2 is a plan view thereof, Fig. 3 is a cross-sectional explanatory view of the threshing section, and Figs. 4 and 5. 6 is a partially enlarged explanatory diagram, and FIG. 6 is an electrical circuit diagram of the main part. 8... handling cylinder, 41... processing cylinder, 45... third port, 74... grain loss sensor.

Claims (1)

[Scope of utility model registration request] A threshing device in which a processing cylinder 41 is provided in a direction substantially orthogonal to the rear side of a processing cylinder 8 includes a grain loss sensor 74 for detecting grain loss at the third port 45, and
The processing cylinder 4 is located between the rear end of the swinging sorting board 29 and the third port 45.
1, and is configured to increase the rotation speed of the processing cylinder 41 as grain loss increases based on the detection result of the grain loss sensor 74.