JPH06105610A - Reaper of combine - Google Patents

Abstract

PURPOSE:To increase raising and raking performances of grain culm by a reel of a combine. CONSTITUTION:A revolving speed of a reel 2 is linked to movement of the reel 2 for raking grain culm based on a reaper 1 in the longitudinal direction in such a way that the revolving speed of the reel is made high in the forward movement and low in the backward movement to give the objective reaper of a combine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine harvester, which can be used for a combine having a reel for scraping grain.

[0002]

2. Description of the Related Art In a combine for scraping a grain culm in the form of a reel, the rotation of the reel causes the harvesting and the scraping, and the harvesting is performed by the cutting blade device. The rotational position of is generally located in front of the cutting blade device. However, the proper position of the reel is different depending on the upright posture of the mowing culm, the laid posture after lying on the cutting blade device (when cutting), and the forward laid posture when lying on the front (when scoring). Among them, in the mowing operation in the forward tilted posture, the reel position is located more forward than in other cases. Moreover, at this time, it is necessary to increase the rotation speed of the reel.

Therefore, according to the present invention, the forward and backward movements of these reels and the speed change of the reels are linked to each other.
The reel operation is simple and easy.

[0004]

The present invention provides a cutting blade device 1
In conjunction with the front-rear movement of the reel 2 for scraping grain with respect to the rotation speed of the reel 2, the rotation speed of the reel 2 is increased in the forward movement and is decreased in the backward movement. The configuration of the reaping device.

[0005]

When the mowing grain culm is in the upright position or the rearward laying position and the normal reel 2 position is set, the additional cutting of mowing the grain stalk in the forward laying position which falls down in the cutting direction is performed. At this time, the reel 2 is moved forward with respect to the cutting blade device 1. By the forward movement of the reel 2, the transmission device that rotates the reel 2 is shifted to a high speed range. Further, when the mowing direction is changed from the additional mowing direction to the mowing in the upright posture or the upright posture, the reel 2 is decelerated by moving the reel 2 accordingly.

As described above, the reel 2 is interlocked with the movement of the reel 2 in the front-back direction with respect to the cutting blade device 1.
Since the rotation speed of the is changed, the mowing operation is simple, easy, and accurate.

[0007]

[Example] The combine is an ordinary combine combine in the form of a whole culm, which has a reel 2, an auger 3, a feed conveyor 4 and the like, and feeds the whole culm to be threshed by supplying it to a rear threshing device. 5 has a reciprocating blade device 1 at the front end of 5 and has a finger 6 and is rotated by a reel 2.
The cutting blade device 1 is located above and in front of the cutting blade device 1, and is vertically movably supported by the left and right reel arms 7 and is provided so as to be movable back and forth.

The reel 2 has its left and right reel shafts 9 attached to and supported by a boss 10 so as to be movable back and forth with respect to the reel arm 7.
Can be hydraulically controlled by the telescopic cylinder 11 to move back and forth. At one end of the reel shaft 9, a low gear for shifting,
The chain 14 is transmitted between a high speed sprocket 12 and 13 and a drive sprocket 31 which rotates on an arm shaft 8 which is an elevating and lowering center of the reel arm 7 and tensions the chain 14 near the speed change sprockets 12 and 13. By moving the tension roller 15 in the direction of the reel shaft 9 by operating the wire 16, the chain 14 is replaced with the low speed sprocket 12 or the high speed sprocket 13,
The rotation speed of the reel can be changed.

In order to change the rotation speed of the reel 2,
The forward / backward movement of the reel 2 and the interlocking movement of the tension roller 15 are performed by fitting a movable operation ring 18 against the spring 17 to the front end of the left and right reel arm 7 so that the reel boss 10 moves forward. The actuation ring 18 is moved by the movement, and the tension roller 15 is moved through the wire 16.
To move the front end of the chain 14 to the low speed sprocket 1
2 to the high-speed sprocket 13, and conversely, by the rearward movement of the reel boss 10, the operating ring 18 is pushed back by the spring 17, and the chain 14 by the tension roller 15 is switched to the low-speed sprocket 12 side. To be

In order to change the speed of the reel 2 as described above, a continuously variable speed change belt may be transmitted by a split pulley instead of the sprocket. In addition, 20 is a combine chassis, 21 is a crawler traveling device, 22 is a threshing device for threshing the grain culms fed by the feed conveyor 4, 23 is an auger for taking out the threshed grains from the Glen tank, and 24 is a control cabin. Reference numeral 25 is a lift cylinder that raises and lowers the mowing device with respect to the chassis 20, and 26 is left and right weeding frames of the mowing device. A vertical weeding device 28 is provided detachably along the weeding frame 26 for weeding the culms by the rug 27 while weeding them to the left and right.

When the grain culm is in the forward leaning position during the reaping operation, the reel boss 10 is moved forward by the cylinder 11 by switching to the reaping mode for additional cutting, and the high speed from the low speed sprocket 12 of the chain 14 is increased. The sprocket 13 is switched to, and the reel 2 is rotated at high speed. For this reason, the grain culm in the forward tilted posture at the time of additional cutting is promptly pulled up and scratched in the case of the grain culm by the reel 2.
On the contrary, when the switching operation in the mowing mode is returned, the reel 2
Becomes a low speed rotation.

FIG. 4 shows a transmission mechanism of the mowing device. The crankshaft 3 for transmitting the mowing blade device 1 from the input shaft 29.
Drive sprocket 3 that drives 0 to reel 2 to chain 14
It is transmitted to the shaft 8 of No. 1 and the shaft 32 of the auger 3. Of these, the chain 33 is directly transmitted to the auger shaft 32, but is transmitted to the crank shaft 30 via a clutch 35 operated by a shifter 34, and the shaft 8 to the reel 2 is transmitted.
Is transmitted through a continuously variable belt 38 formed by the clutch 35 and the split pulleys 36 and 37. The clutch 35 is operated by the clutch lever 39 by the shifter 34. Further, the speed change belt 38 is subjected to stepless speed change by the control motor M expanding and contracting the pulley interval of the split pulley 36 via the screw rod 40. In this screw 40,
The shift pointer 41 is connected via a link mechanism 42 to display the shift position of the shift belt 38. A switch 43 detects the upper limit and the lower limit of the shift position.

The reel shifting control motor M is driven and controlled by an output from a controller CPU incorporated in the microcomputer, and an input of this controller CPU is a hydraulic continuously variable transmission for performing transmission shifting of the traveling device 21. HST sensor S1 including a potentiometer for detecting the operating angle of the HST lever 44, and the shift pointer 4
The reel speed sensor S2 including a potentiometer or the like for detecting the angle of 1 is input to control the rotation speed of the reel 2 according to the traveling speed of the traveling device 21.

The vehicle speed of the traveling device 21 and the reel 2
The relationship with the rotation speed is set in the controller CPU as characteristic values A and B as shown in FIG. 7, and the rotation control of the reel 2 is performed according to this characteristic line. The line A is used for cutting upright culms in an upright posture, and the line B is used for laid down culms. The control modes A and B may be switched by the switching operation of the mowing mode.

In FIG. 6, reference numeral 45 denotes an automatic switch which is turned on to perform the automatic shift control of the reel 2 and not to be turned off. 46 is a manual switch for turning on and off the control motor M switch
Then, the rotation speed of the reel 2 is changed by electrically driving it. By the clutch lever 39,
When the clutch 35 is disengaged, the reel 2 and the cutting blade device 1 are stopped, and the auger 3 and the feed conveyor 4 are being transmitted, a hand-cut grain culm such as a pillow is directly supplied into the cutting case 5. It is convenient for threshing.

8 to 11, the point different from the above example is that when the reel arm 7 is moved up and down by a cylinder 19 that raises and lowers the reel 2 with respect to the mowing device, the reel arm 7 is moved up and down. The stroke sensor 47 for detection is provided with a restraint switch 48, and by operating the reel arm 7 from the standard position to the fall position, the restraint switch 48 is turned on, and the automatic switch 45, the reel sensor S2, and the HST sensor. The automatic reel rotation control in the controller CPU by S1 and the like is stopped.

Further, in this case, as shown in FIG. 11, the rotation speed of the reel 2 changes within a predetermined width E between the speed increase C and the speed decrease D, but the check switch 48 is turned on. In this state, the vehicle speed is low and the rotation speed of the reel 2 is also high. By controlling the line F along the line F, the reel 2 can be lowered and the work efficiency can be improved in the lowered position. .

12 to 15 are different from the above example in that not only the rotation speed control of the reel 2 based on the detection by the HST sensor S1 of the HST lever 44 as described above but also the rotation of the engine E is performed. The control is performed on the basis of the detection by the engine rotation sensor S3 for detecting, the handling cylinder sensor S4 for detecting the number of rotations of the handling barrel 50 of the threshing device 22, and the like.

The number of revolutions of the reel 2 is changed at a constant rate with respect to the HST opening degree by the HST lever 44. A certain time lag is set for the high and low engine speeds to change the engine speed. Further, even when the opening of the HST lever becomes small when the rotation of the handling cylinder is reduced, the number of rotations is reduced only for a certain fixed time (time required for the rotation of the handling cylinder to be restored).

There is a time lag between the gear shift by the HST lever 44 and the actual vehicle speed. In the relationship between the vehicle speed and the reel rotation speed in FIG. 13, the change in the rotation speed due to the increase in the vehicle speed changes abruptly, and the decrease in the vehicle speed changes gently. Further, the rotation of the reel 2 varies depending on the speed at which the vehicle speed starts to decrease due to a load or the like. Since the rotation of the reel 2 is changed according to only the change of the opening degree of the HST lever 44, when the rotation speed of the engine E decreases at the full working zone at the maximum load, the reel 2 rotates a little earlier, Rotation of grain culms easily occurs. For this reason, when the engine rotation is still reduced or kept decreasing even after a lapse of a certain time T after the rotation reduction of the engine E is started, deceleration of the reel speed can be started to perform stable work.

16 and 17, the point different from the above example is that a grain culm undulation sensor S5, which is an ultrasonic sensor for detecting the napped hair and fall posture of the grain culm, is provided in the weed frame 26, and this grain culm is used. By the detection of the undulation sensor S5, the mode is switched between the napped mode and the laid-down mode, and in the case of the fallen grain culm, the ratio of the reel rotation speed is controlled to be faster than that in the case of the raised culm (Fig. reference). Vehicle speed sensor S6 is HST
Instead of the sensor, the actual vehicle speed is detected by detecting the rotation of the drive shaft transmitting the traveling device 21.

18 to 21, the point different from the above example is that when the vehicle speed reaches a certain speed, the reel 2 rotates at the maximum speed, and the vehicle speed decreases for a certain period of time even if the vehicle speed decreases t1. Is to avoid changing the number of revolutions.

[Brief description of drawings]

FIG. 1 is a side view of a mowing device section.

FIG. 2 is a plan view of the reel transmission unit.

FIG. 3 is a side view of the combine.

FIG. 4 is a transmission mechanism diagram of the reaping device.

FIG. 5 is a reel speed control mechanism diagram.

FIG. 6 is a control block diagram of the controller.

FIG. 7 is a graph showing the reel control characteristic.

FIG. 8 is a side view of the reel operating lever portion.

FIG. 9 is an enlarged view of a part thereof.

FIG. 10 is a control block diagram of the controller.

FIG. 11 is a graph showing the reel control characteristic.

FIG. 12 is a control block diagram of a controller showing another embodiment.

FIG. 13 is a graph showing the relationship between vehicle speed and reel rotation speed.

FIG. 14 is a graph showing the relationship between the opening degree of the HST lever, the engine speed, and the reel speed.

FIG. 15 is a graph showing changes over time in engine speed and reel speed.

FIG. 16 is a side view of the weed frame portion showing another embodiment.

FIG. 17 is a control block diagram of the controller.

FIG. 18 is a control block diagram of a controller showing another embodiment.

FIG. 19 is a side view of the HST lever portion.

FIG. 20 is a front view of the reel sensor unit.

FIG. 21 is a graph showing the relationship between vehicle speed and reel rotation.

[Explanation of symbols]

 1 cutting blade device 2 reels

Claims (1)

[Claims] 1. The rotation speed of the reel 2 is increased in the forward movement and lowered in the backward movement in association with the front-rear movement of the reel 2 for scraping the grain with respect to the cutting blade device 1. Combine harvester that is geared together like this.