JP2808693B2 - Combine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine, which can be used when turning a vehicle body to the next cutting stroke at an end of a cutting stroke.

2. Description of the Related Art At the end of a cutting process, when a vehicle body is turned around a row of cereal culms in the next process, if there is no culm at the reaping end, the reaping device is raised to a non-cutting position. There is a technique that cuts off the transmission to the cutting device by raising the cutting position and also cuts off the transmission to the grain culm transfer chain of the threshing device. In addition, there is a technique in which the rotation speed of the Karamin fan is reduced at the time of turning the vehicle body to pass the sorted wind.

Problems to be Solved by the Invention When turning the body at the cutting end portion in the combine operation, when the cutting device is raised from the cutting position to the non-cutting position, the transmission to the cutting device and the threshing device to the grain culm transfer chain is cut off. In the combine having a configuration in which the grain culm transfer chain is stopped, a large amount of threshed grains, straw chips, and sticky branch attached grains are subjected to the sorting action even when the grain culm transfer chain is stopped. If the rotation speed of the Karamin fan is reduced together with the suspension of the culm transfer chain, the sorting wind power will decrease, and there is a problem that poor sorting may cause clogging.

On the other hand, when the soil surface on which the vehicle body turns at the cutting edge is soft, the running load during this turning increases, the engine speed drops, the transmission to the cutting device and the cereal culm transfer chain is cut off, and the water is cut off. When the rotation speed of the fan is reduced, a phenomenon has occurred in which the rotation of the engine is reduced to cause poor selection.

Therefore, the present invention solves such a problem, and when the transmission to the cutting device and the grain culm transfer chain is cut off with the raising of the cutting device at the time of turning of the cutting end or the vehicle body, threshing is also possible. The purpose is to perform good sorting of objects.

Means for Solving the Problems The present invention cuts off the transmission to the cutting device 1 and the grain culm transfer chain 3 of the threshing device 2 by raising the cutting device 1 from the cutting device to the non-cutting position. The rotation of the Karamin fan 5 for sending the sorting wind into the sorting chamber 4 of the threshing device 2 is reduced after maintaining the rotation of the Karin fan 5 for a predetermined time, and the cutting device 1 and the grain culm transfer chain are lowered by lowering the cutting device 1 to the cutting position. 3 and a control to control the rotation of the Karamin fan 5 to return to the original rotation.

Operation of the invention At the cutting end in the combine operation, when the stalks disappear and the cutting device 1 is raised from the cutting position to the non-cutting position, the stalk transfer chain 3 of the cutting device 1 and the threshing device 2 is moved.
When the rotation of the Karamin fan 5 is maintained for a predetermined time and lowered, and the mowing device 1 is lowered to the mowing position, the power transmission to the mowing device 1 and the grain culm transfer chain 3 is started. At the same time, the rotation of the Karino fan 5 is controlled so as to return to the original rotation, and the combine operation is continuously performed.

Effects of the Invention At the mowing end or the like, even if the mowing device 1 is raised to the non-mowing position to cut off the transmission to the mowing device 1 and the grain culm transfer chain 3, a large amount of grains and Since the threshing material such as straw waste is subjected to the sorting action, the sorting wind is sent into the sorting chamber 4 by maintaining the rotation of the Karamin fan 5 for a predetermined time, and the sorting is performed. Can sufficiently receive the sorting operation, and can prevent the occurrence of defects such as poor sorting and clogging.

Then, when the sorting is sufficiently performed and the sorted items are reduced, the rotation of the Karamin fan 5 is reduced, so that the scattering of the grains is prevented, and the stability of the sorting performance can be improved.

Also, when turning the vehicle body to the next mowing stroke at the mowing end, when the running soil surface is soft, the running load may increase and the engine rotation may decrease, but even in such a case, Since the rotation of the Karamin fan 5 is reduced after being maintained for a predetermined period of time, no sorting failure occurs.

Embodiment In the example shown in the drawings, the combine has a configuration in which a threshing device 2 is mounted on a vehicle body 7 having a left-right traveling device 6 and a reaper 1 is provided at a front portion.

A transmission case 8 is provided at the front of the vehicle body 7 and has a transmission mechanism internally provided therein for transmitting the reaping device 1 and the right and left traveling device 6 when the input is transmitted from the engine. The transmission 9 is mounted. An output pulley 10 for extracting power to the reaper 1 is provided on a transmission path of the transmission case 8.

The reaper 1 has a base of a reaping frame 11 pivotally mounted on an input shaft 12 so as to be swingable, and a weeding frame 13 is provided at a lower end of the reaping frame 11. A weeding body 14 is provided at the tip of the weeding frame 13, and a raising device for raising the grain culm, a cutting blade device, and a transfer device 15 for transferring the cut cereal culm to the threshing device 2 are provided behind the weeding body 14.

An elevating cylinder 16 is provided between the mowing frame 11 and the vehicle body 7, and the elevating cylinder 16 switches a switching valve by the forward and backward tilting of an operation lever 17, and pressurized oil is supplied and discharged to expand and contract. It is configured to be raised and lowered around 12. Further, the transmission to the left and right traveling device 6 via the hydraulic device or the like is turned off by the left and right tilting of the operation lever 17, and braking is possible.

A belt is stretched between a cutting input pulley 18 provided on the input shaft 12 and an output pulley 10 of the transmission case 8, and a tension pulley 19 for relaxing the belt is cut by a cutting frame.
11 is provided. When the mowing device 1 is raised from the mowing position to the non-mowing position, the tension pulley 19 loosens the belt to cut off the transmission from the output pulley 10 to the mowing input pulley 18, and when the mowing device 1 is lowered to the mowing position, the belt is transmitted by stretching the belt. And the mowing device 1 is driven and driven.

The threshing device 2 is provided with a culm transfer chain 3 along a handle of a handling cylinder 20 and a threshing room in which the thick cylinder 20 is provided, and below the threshing chamber receives threshing material threshed by the handling cylinder 20. A sorting room 4 for sorting kernels and straw wastes is provided. Under the sorting room 4, from the front to the rear, the Karamin fan 5, the most spiral,
The second spiral is arranged sequentially.

The rotation of the engine is transmitted to the handling cylinder 20 via the threshing counter shaft, and is transmitted to the transmission shaft 21 via another counter shaft, and the first spiral and the second spiral are transmitted from the transmission shaft 21 as a belt, A belt is transmitted from the first spiral pulley 22 to the Karino fan 5.

The Karino fan 5 is configured to reduce the number of revolutions to a predetermined number for adjusting the amount of sorting air. The pulley 23 that stretches the transmission belt has a fixed plate 23a fixed to the
And a movable plate 23b slidably fitted on the Karaoke shaft 24. A connecting pin 25 provided on the fixed plate 23a is inserted through the movable plate 23b.
The moving plate 23b is configured to rotate integrally. The moving plate 23b rotates the arm 27 by forward and reverse rotation of the motor 26, and slides on the Kara shaft 24 via the cam mechanism 28 at the tip to adjust the distance between the moving plate 23b and the fixed plate 23a to be narrow or wide. It is. 29 is a tension pulley of the transmission belt.

The input shaft 31 of the transmission case 30 having the transmission shaft 21 or a transmission mechanism for transmitting the grain culm transfer chain 3 is transmitted by a belt. The input shaft 31 is provided with an input pulley 32, and the transmission of the transmission case 30 to the output sprocket 34 is switched on and off when the pawl clutch 33 is switched on and off.

The operating arm 35 of the claw clutch 33 and the cutting frame 11
When the mowing device 1 is raised from the mowing position to the non-mowing position, the claw clutch 33 is turned off by the operating wire 36 to cut off the transmission to the grain culm transfer chain 3, and When descending to the cutting position, the pawl clutch 33 is engaged to drive the grain culm transfer chain 3 from the output sprocket 34. Reference numeral 37 denotes a switch for detecting the disengagement of the claw clutch 33.

FIG. 2 is a control block diagram. When ON information of a switch 37 for detecting the disengagement of the claw clutch 33 is input to a control device 38, a timer 39 is operated and after a predetermined time, the control device 38
Is output to the reverse rotation relay 49 so that the motor 26 rotates in the reverse direction to reduce the rotation of the Karino fan 5 to a predetermined rotation.
To reduce the distance between the fixed plate 23a and the moving plate 23b.

When the claw clutch 33 is engaged and the OFF information of the switch 37 is input to the control device 38, it is output to the forward rotation relay 41, the motor 26 rotates forward, and the rotation of the Karino fan 5 increases to the original rotation. The control is such that the cam mechanism 28 is operated so as to return.

Power is transmitted to each part, and when the cutting device 1 is lowered to the cutting position with the weeds 14 along the row of grains, the power is transmitted to the cutting device 1. When transmitted to the traveling device 6, the culm is cut by the reaper 1 and transferred to the threshing device 2. The culled culm is taken over by the cereal culm transfer chain 3, and the culm 20 is rotated while being pinched and transferred. Threshed.

A part of the threshed by the rotation of the handling drum 20 in the threshing room is leaked from the threshing room, is oscillated and transported in the lower sorting room 4 and is sorted by the sorting wind of the Karamino fan 5, and The grains are taken out of the machine by the first spiral.

When the culm disappears at the cutting edge and the operating lever 17 is operated to raise the cutting device 1 from the cutting position to the non-cutting position, the transmission belt of the cutting input pulley 18 is loosened by the tension pulley 19 of the cutting frame 11 and cutting is performed. When the transmission to the device 1 is cut off, the claw clutch is
The transmission to the grain culm transfer chain 3 is cut by turning 33.

When the switch 37 for detecting the disengagement of the claw clutch 33 is turned on, the timer 39 is operated, and after a predetermined time, the motor 26 is rotated in reverse, and the cam mechanism 28 is operated to move with the fixed plate 23a of the pulley 23 of the Karino shaft 24. The interval with the plate 23b is set to a predetermined interval, and the rotation of the Karino fan 5 is reduced to the predetermined rotation.

Thus, even if the culm transfer chain 3 stops, the sorting room 4
There is a large amount of thresh that has been sorted inside, so that the rotation of the Karamin fan 5 is maintained for a predetermined time, and after the threshed is sufficiently sorted, the rotation of the Karamin fan 5 is reduced, When the amount of the sorted material is reduced, the scattering of the paddy can be prevented, the poor sorting and the clogged tang are eliminated, and the threshing performance can be improved.

In addition, at the corner of the cutting edge, the vehicle body 7 is operated so as to cut and travel along the next row of grain by operating the operation lever 17.
When the revolving load is increased due to soil conditions such as wet fields, the engine rotation decreases. When the Karami fan 5 is stopped together with the suspension of the grain stalk transfer chain 3,
A phenomenon that further causes poor sorting due to a decrease in the engine speed has occurred. However, such a problem can be solved.

When the operating lever 17 is lowered to lower the mowing device 1 to the mowing position, the mowing device 1 and the grain culm transfer chain 3 are transmitted to the mowing device 1 and the rotation of the Karamin fan 5 is controlled to return to the original rotation. , The combine work is continuously performed.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is an overall side view of a combine which can be partially broken, FIG. 2 is a control block diagram, and FIG. 3 is a partially enlarged plan sectional view. In the figure, reference numeral 1 denotes a harvesting device, 2 denotes a threshing device, 3 denotes a grain culm transfer chain, 4 denotes a sorting room, 5 denotes a Karamin fan, and 38 denotes a control device.

Claims (1)

(57) [Claims] When the mowing device 1 is lifted from the mowing device to the non-mowing position, the transmission between the mowing device 1 and the threshing device 2 and the grain culm transfer chain 3 is cut off.
After the rotation of the Karamin fan 5 for sending the sorting wind into the sorting chamber 4 is maintained for a predetermined period of time, the rotation is lowered, and the cutting device 1 is lowered to the cutting position, whereby the cutting device 1 and the grain culm transfer chain 3 are lowered.
And a control to control the rotation of the Karamin fan 5 to return to the original rotation.