JP3118932B2 - Combine transmission system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transmission system for a combine, and more particularly to a feed chain of a reaper and threshing device.
The present invention can be used for a power transmission system or the like in which power is transmitted via each different transmission.

[0002]

2. Description of the Related Art Conventionally, a combine has been operated by supplying power to each of a traveling, a mowing and a threshing device by means of its prime mover.
In these power transmissions, recently, in addition to a traveling transmission for traveling, a continuously variable transmission and transmission that branches and supplies power to a harvesting device and a feed chain of a threshing device is provided. The built-in synchro device synchronizes the rotation speed of the mowing device and the feed chain speed of the threshing device in proportion to a change in vehicle speed, and distributes and transmits power.

This synchro device controls a speed change device of, for example, a speed change belt type or a ring cone type, based on a vehicle speed detection value provided by a separately provided detection device.
This shift control is performed so as to be in proportion to the vehicle speed. However, when the rotation speed of the mowing device and the feed chain speed of the threshing device are synchronized in proportion to the vehicle speed by the same transmission as described above, the adaptability to the combine operation is biased to either the mowing device or the feed chain. For example, if the adaptability is adjusted to the reaper side, the feed chain side is ignored,
If the harvester is adjusted to the feed chain side, a state may occur in which the harvester side is ignored, and the original function of the combine may be disturbed, which may hinder the operation.

Accordingly, the present invention is intended to correct the bias of the adaptability to the work by freely changing the feed chain speed regardless of the rotation speed of the mowing device.

[0005]

According to the present invention, a reaper 1 is provided.
The speed of the feed chain 3 and the speed of the feed chain 3 of the threshing device 2 are synchronized with the vehicle speed.
Co When Ru provided conveyed continuously variable transmission 4 in its own driveline
In the vicinity of the maximum speed of the reaper 1, the feed chain 3rd speed
A combine transmission system is characterized in that the degree of change in degree is reduced .

[0006]

The power diverged from the prime mover is first transmitted to the continuously variable transmission, and from the high-speed side of the continuously variable transmission to the input side of the reaper 1 and from the low-speed side. The power is distributed and transmitted to the feed chain 3 of the threshing device 2 via the continuously variable transmission 4. The vehicle speed at the time of the combine operation by the power transmission is detected by, for example, a separately provided vehicle speed sensor, and the detected value is used to control the continuously variable transmission, so that the rotation speed of the harvester 1 and the speed of the threshing device 2 are controlled. The feed chain 3 speed can be tuned in proportion to the vehicle speed.

However, at this time, in order to adjust and shift the speed of the feed chain 3 to an optimum speed in terms of the work performance of the threshing device 2, the continuously variable transmission 4 allows the speed to be changed regardless of the rotation speed of the reaper 1. Is what you do. As described above, the feed chain 3 is provided by the continuously variable transmission 4 provided in the power transmission path unique to the feed chain 3.
The speed change curve can be freely changed without being synchronized with the speed change curve of the rotation speed of the reaper 1, so that the adaptability to the combine operation can be adjusted without biasing either the reaper 1 or the feed chain 3. , So that the original function of the combine can be sufficiently exhibited. Soshi
Near the maximum speed of the reaper 1, feed chain 3 speed
Since the rate of change of the degree is small,
The speed of the eed chain 3 is not reduced, and
It is smoothly transported backward. Therefore, the culm is threshing
Since threshing is not performed more than necessary in the device 2,
The raw material is reduced and the sorting performance is improved.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. In the combine for carrying out the present invention, the planted grain culm is weeded by the weeding body 5, raised by the raising device 6 and cut by the cutting blade device 7, and the harvested grain culm is threshed rearward by the transport device 8. Mowing device 1 to be transported to device 2
Is mounted on the front end side of the machine base 9 so as to be able to move up and down with respect to the soil surface.

The grain culm is clamped and conveyed on the machine base 9 by a feed chain 3 stretched along the supply port side of the handling room 10, and the handling drum 1, which bears the transported grain culm in the handling room 10.
1 and a threshing device 2 for sorting the thresh by a sorting device 12 provided below the handling room 10, and a threshing and sorting in a grain tank 13 juxtaposed to one side of the threshing device 2. The later kernels are temporarily stored. In addition, the waste straw after threshing is processed by the straw processing device 14 provided on the rear side of the threshing device 2.

A traveling gear case 15 for shifting the vehicle speed is provided at the front end side of the machine base 9, a traveling continuously variable transmission 16 is operatively connected to an input side of the traveling gear case 15, and a traveling output shaft of the traveling gear case 15 is provided. 17 is provided with a traveling device 19 for traveling on the soil surface by interlockingly connecting a pair of left and right traveling crawlers 18 disposed below the machine base 9. Further, a prime mover 20 is installed on the machine base 9 in front of the grain tank 13,
A control table 21 and a control seat 22 are provided above and surrounding the motor 20.

As shown in FIG. 3, a power transmission mechanism A for transmitting power from the prime mover 20 to each of the devices 1, 2, and 19 is connected to an output shaft 23 of the prime mover 20 and a traveling input shaft of the traveling continuously variable transmission 16. A transmission belt is stretched to transmit power to the counter shaft 24 and the counter shaft 25, respectively. In addition, the counter shaft 25
A transmission belt is stretched in the middle to a reduction gear case 26 for distributing and transmitting power to the cutting device 1 and the feed chain 3 of the threshing device 2 through a cutting and continuously variable transmission 27. The continuously variable cutting device 27 is configured to continuously change the rotation speed of the cutting device 1 and the speed of the feed chain 3 of the threshing device 2 from zero by a ring cone mechanism so as to be proportionally synchronized with the vehicle speed.

The reduction gear case 26 is disposed on the low speed shaft 30 via the intermediate shaft 29 by gear transmission from the high speed shaft 28 so as to transmit power from the high speed shaft 28 to the cutting input shaft 31 of the reaper 1. Install the transmission belt. Further, a chain input shaft 32 of the feed chain 3 from the low speed shaft 30.
A transmission belt is stretched in the middle to transmit power through the continuously variable transmission 4, and a sprocket 60 is mounted on one end of the chain input shaft 32, and the power is supplied to the feed chain 3 by the sprocket 60. To communicate. Further, the continuously variable transmission 4 is configured to continuously change the speed of the feed chain 3 from zero by a ring cone mechanism so as to be separated from the rotation speed of the reaper 1 and independently adjusted in proportion to the vehicle speed. I do.

Further, the continuously variable transmission 4 and the continuously variable mower 27 do not take a transmission path such as the power transmission mechanism A, but are separately branched from the prime mover 20 to transmit power. It can be configured. Further, a transmission belt is stretched to transmit power from the counter shaft 25 to the handling cylinder 11 system and the sorting device 12 system of the threshing device 2.

As a detecting means for detecting the traveling speed of the traveling device 19, that is, the vehicle speed, a vehicle speed sensor 33 composed of a photocoupler or the like is provided at one of the shaft ends (not shown) forming the traveling gear case 15 and its periphery. . Further, as detecting means for detecting the rotation speed of the cutting device 1 and the speed of the feed chain 3, a cutting rotation sensor 34 and a chain speed sensor 35 comprising a photocoupler or the like are provided. It is provided at an appropriate position of the step transmission 4.

The control mechanism of the continuously variable transmission 4 is shown in FIG.
As shown in FIGS. 3A and 3B, a shifter 37 having a U-shaped cross section having a groove for sandwiching the speed change ring 36 is connected to the tip of a link 39 fixed to the front end of a rotating shaft 38. A fan-shaped rack plate 40 is rotatably inserted, and an arm 41 is fixedly provided at the rear end of the rotating shaft 38. Further, a pin 42 protrudes from a substantially intermediate portion of the rack plate 40, and the pin 42 is inserted into a long hole 43 provided at a position opposite to the arm 41.

Further, a gear box 45 containing a worm gear that is axially mounted on the rotating shaft of the transmission motor 44 and a gear (not shown) that meshes with the worm gear is provided.
A pinion shaft 46 fixed to the gear is projected from the gear, and a pinion 47 axially mounted on the pinion shaft 46 and the rack plate 4.
0 are engaged. A switch 48 to be opposed to the tip side of the arm 41 is mounted on the rack plate 40 via a mounting plate 49, and the contact point of the switch 48 is set within a play range of the pin 42 in the elongated hole 43. The arm 41 and the mounting plate 49 are connected to each other by a spring 5.
The switch 48 is always turned on by the pulling force of the spring 50.

The arm 41 has a protrusion 4
1a is projected, and a zero-point adjustment bolt 51 is screwed into the tip of the projection 41a. And this zero point adjustment bolt 51
A stop plate 53 protruding from the motor base 52 is disposed at a predetermined rotation position. The zero point adjustment bolt 51 is for preventing reverse rotation of the transmission output shaft 54, and the adjustment is performed by fixing the zero point adjustment bolt 51 at a point where the forward rotation of the transmission output shaft 54 becomes zero. It is done by doing.

Further, one end of a traction spring 55 is attached to the left end of the rack plate 40, and the other end of the traction spring 55 is fixed to an appropriate place such as the motor base 52, so that the rack plate 40 is constantly pulled. It is to let. Thus, the continuously variable transmission 4 transfers the arm 41 through the rack plate 40 and the pin 42 by the rotation of the speed change motor 44.
Turns, and the transmission ring 36 is freely driven in the axial direction via the shifter 37 integrated with the arm 41, so that the transmission input shaft 5
The input from the transmission 6 is shifted to be output from the shift output shaft 54.

Also, the control mechanism of the continuously variable transmission 27 is controlled in accordance with the control mechanism of the continuously variable transmission 4. Further, the transmission mechanism of the continuously variable transmission 4 and the continuously variable transmission 27 is not limited to a continuously variable transmission using a ring cone, but may be a continuously variable transmission using a belt or hydraulic pressure. is there.

As shown in FIG. 6, a traveling speed change lever 57 for changing the speed ratio of the continuously variable transmission 16 is disposed on the control table 21, and a work mode changeover switch 58 is provided at a grip portion of the traveling speed change lever 57. Provide. The work mode changeover switch 58 is used to select one of a “standard mode” used when the cereal stem is upright and a “falling mode” used when the cereal stem is lying down during the mowing operation. Is to select.

Further, the control table 21 is provided with a cut-out speed change lever 59a and a transfer speed change lever 59b arranged side by side for controlling the speed of the continuously variable transmission 4 and the continuously variable cutting and cutting device 27 separately. An arithmetic control unit (not shown) for performing these arithmetic controls by a CPU or the like is provided near the control table 21.

Next, the configuration of the sorting device 12 of the threshing device 2 will be described. The threshing material leaked from the handling net 61 provided below the handling cylinder 11 of the threshing device 2 is used for the swinging operation of the swing sorting shelf 62 installed immediately below the handling net 61 along the axis of the handling cylinder 11. The rocking sorting shelf 6
2 below, the main karamin 63, which generates a pressurized wind for separating the thresh by a plurality of blades, and the main karamin 6
Auxiliary fan 64, which is a cross-flow fan that assists No. 3, is located below it.

Below the swing sorting shelf 62, the auxiliary
A first trough 66 for laterally feeding the first grain dropped from the first sorting section 65 from the fourth side to the lower side;
A second receiving trough 68 for laterally feeding the second object dropped from the second sorting unit 67 is provided on the lower side of the second receiving unit 68. Further, the casing lower plate 69 of the main drum 63 is extended and connected to the first drainage gutter 66, and the casing lower plate 69 and the casing upper plate 70 are partitioned by a wind divider plate 71 to form a first plate. Wind path 7
2 and the second air passage 73 are provided.

The auxiliary Karino 64 is disposed adjacent to the main Karino 63 by using the casing upper plate 70 of the main Karino 63 as the auxiliary casing lower plate 70, and the auxiliary casing lower plate 70 And its auxiliary casing upper plate 74
To form a third air passage 75. An openable / closable wind power adjusting plate 76 of an arbitrary width is hinged to the casing upper plate 70 at an intermediate portion of the casing upper plate 70 of the main karano 63 so that the second air passage 73 can be shielded when opened. Place,
An electromagnetic device 77 is provided so that the opening and closing of the wind adjustment plate 76 can be magnetically operated. A backflow prevention plate 7 which can be opened and closed at an arbitrary width at an appropriate position on the casing upper plate 74 of the auxiliary Karino 64.
8 is hinged to the casing upper plate 74, and when opened, the third air passage 75 is disposed so as to be able to be shielded, and the backflow prevention plate 78 is provided so as to be opened and closed by wind pressure action. Further, the opening / closing of the backflow prevention plate 78 may be opened / closed not only by the wind pressure action but also by another action,
The magnetic force may be used as long as there is an alternative to the magnetic force.

Next, the operation of the above configuration will be described. When the prime mover 20 is started, power is transmitted from the output shaft 23 to the traveling input shaft 24 and the counter shaft 25, and the traveling crawler 18 is driven by operating the traveling transmission lever 57, so that the traveling device 19 is in a traveling state. Further, the handling cylinder 11 system and the sorting device 12 system of the threshing device 2 and the feed chain 3 of the mowing device 1 and the threshing device 2 are respectively driven.

When the combine operation is started by these operations, the rotation speed of the reaper 1 is controlled by the arithmetic and control unit according to the selection of the operation mode changeover switch 58. That is, as shown in FIG. 7, when the “standard mode” is selected, the vehicle speed of the traveling device 19 and the rotation speed of the reaper 1 are controlled so as to be in proportion to each other, and the “sleeping mode” is set.
When is selected, it is controlled to be arbitrarily settable without performing proportional tuning.

Hereinafter, this control will be described in detail.
First, when the vehicle speed is detected by the vehicle speed sensor 33, the target rotation speed of the reaper 1 corresponding to the detected vehicle speed is set according to the selection mode of the work mode changeover switch 58. As a result, when the cutting rotation sensor 34 detects the rotation speed of the reaping device 1, the detected value is compared with the previously set target rotation speed. Transmission motor 44 of transmission 27
However, the rotation speed of the reaper 1 is increased by, for example, rotating forward and moving the shifter 37 to the speed increasing side. On the other hand, when the detected value of the vehicle speed exceeds the target value, the speed change motor 44
In reverse, the shifter 37 is moved to the deceleration side so that the reaper 1
Rotation speed decreases. By such control, the rotation speed of the reaper 1 becomes a target value.

The power of the feed chain 3 of the threshing device 2 is distributed from the continuously variable cutting and transmitting device 27, and the rotational speed of the mowing device 1 and the speed of the feed chain 3 are always constant as shown in FIG. Depending on the conditions of the grain stalk, the curve of the speed of the feed chain 3 may be adjusted, for example, as shown in FIG. 9, before the rotation speed of the reaper 1 reaches the maximum speed. Change the speed so that it becomes the maximum speed.

As described above, the setting condition of the speed of the feed chain 3 can be easily changed according to the situation at that time, that is, the rotation speed of the reaper 1 with respect to the vehicle speed,
The relationship between the rotation speed and the speed of the feed chain 3 can be freely selected by operating the cutting gear shift lever 59a and the conveyance shift lever 59b. Also, since the feed chain 3 speed can be freely changed,
The cutting of the culm, which has been mixed most in the grain at the time of threshing wheat, can be greatly reduced by increasing the speed of the feed chain 3.

Next, the sorting device 12 of the threshing device 2 will be described. Sorting in the first sorting section 65 and the second sorting section 67 is performed by the sorting wind sent from the first air passage 72, the second air passage 73, and the third air passage 75 by the blast of the main Kara Min 63 and the auxiliary Kar Min 64. Then, the sorted first grain is traversed by the first gutter 66 and the second grain is traversed by the second gutter 68.

At the time of sorting, when the sorted wind is sent from the main Karin 63 to the first air passage 72 and the second air passage 73 and from the auxiliary Karamino 64 to the third air passage 75 depending on the condition of the grain culm, etc. And the second air passage 73 is shielded by a wind adjusting plate 76 and the selected air is blown from the main Karin 63 to the first air passage 72 and from the auxiliary Karin 64 to the second air passage 73 and the third air passage 75. By performing the adjustment by switching the air flow path in addition to the adjustment by the rotation speed of the main drum 63 and the auxiliary drum 64, the sorting ability of the sorting wind can be adjusted widely.

Further, by dividing the width of the wind adjustment plate 76 into a plurality of plates and adjusting the width, it is possible to further finely adjust the sorting wind. Further, by opening and closing the wind adjusting plate 76, it is possible to remove the grains that are retained in the auxiliary drum 64. Further, when the threshing device 2 is stopped by the backflow prevention plate 78 of the third air passage 75, the auxiliary Karino 6
4 can be prevented from flowing backward.

[Brief description of the drawings]

FIG. 1 is a side view showing the entire combine.

FIG. 2 is a plan view showing the entire combine.

FIG. 3 is a schematic diagram showing a power transmission mechanism of the combine.

FIG. 4 is a side view showing a part of the power transmission device of the combine.

FIG. 5A is a front sectional view showing a combine shift control mechanism, and FIG. 5B is a side view showing a combine shift control mechanism.

FIG. 6 is a perspective view showing an operating tool of the control platform of the combine.

FIG. 7 is a diagram showing a comparison standard of a work mode of the combine.

FIG. 8 is a diagram showing a comparison standard of a work mode of the combine.

FIG. 9 is a diagram showing a comparison standard of a combine operation mode.

FIG. 10 is a side sectional view showing a sorting unit of the combine threshing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Harvesting device 2 Threshing device 3 Feed chain 4 Conveying continuously variable transmission

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A01D 69/00 A01D 41/12 A01D 61/00 A01F 12/10

Claims (1)

(57) [Claims] 1. A reaping Combine tuning the feed chain 3 speed of rotation speed and threshing device 2 of the device 1 to the vehicle speed, the feed chain 3 unique driveline provided conveyance continuously variable transmission 4 Rutotomoni, reaper Near maximum speed of device 1
Beside it, reduce the rate of change of feed chain 3 speed
Combine the transmission method which is characterized by being configured to.