JP2721067B2 - Drive structure of combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a pre-processing unit having a cutting device and a conveying device, which cuts planted grain culm by the cutting device and supplies the cut grain culm to a threshing feed chain by the conveying device. And a drive structure of a combine in which a rotary drive shaft for driving the pre-processing unit is disposed laterally at a position located on the front side of the traveling machine body of the threshing device, and is interlocked with an output shaft of the traveling transmission. .

[0002]

2. Description of the Related Art The above-mentioned combine is synchronized with a shift of a traveling device by a traveling transmission device by interlocking an output shaft of a traveling transmission device and a rotary drive shaft for driving a preprocessing portion. Even if the driving speed changes and the speed and amount of cereal stems entering the pre-processing unit due to running speed change, the driving speed of the mowing device and the transporting device is not too short or too short in the entering speed and amount of cereal stems. The speed has been taken into consideration so that the work can be performed while the planted culm is cut and the cut culm is transported smoothly.
In this type of combine, for example,
As disclosed in Japanese Patent No. 129232, it is possible to work while changing the drive speed of the threshing feed chain in synchronization with the change in the drive speed of the transport device of the pre-processing unit accompanying the traveling speed change. Was. That is, as shown in FIG. 5, the output of the engine E is transmitted to the traveling transmission 10, and the output of the traveling transmission 10 is transmitted to the traveling mission 11 and the rotary drive shaft 15 for driving the preprocessing unit. , And power is transmitted from the traveling mission 11 to the traveling device 12.
5 to the mowing device 2 and the transport device 3 of the preprocessing unit A
And a power transmission to the threshing feed chain 5. The drive sprocket 26 of the threshing feed chain 5 drives the threshing feed chain 5 on the transport start end side.

[0003]

Conventionally, since the threshing feed chain is driven on the transport start end side, slack due to the transport resistance occurs in the transporting portion of the threshing feed chain,
In some cases, transport failure such as slip of the transported grain stem occurred. An object of the present invention is to be able to drive a threshing feed chain in a state in which the speed changes in synchronization with a pre-processing unit shift accompanying a traveling shift, and in a state in which the above-described transport failure is easily avoided, and furthermore, it is possible to obtain a relatively compact. It is to provide a drive structure.

[0004]

In order to achieve the object, in the driving structure for a combine according to the present invention, the chain sprocket for driving the threshing feed chain is replaced with the threshing feed chain. A transmission mechanism that is arranged on the transport end side of the thruster and is provided with a rotary transmission shaft while transmitting from the rotary drive shaft to the chain sprocket, and the rotary transmission shaft is disposed on a lateral side of the vehicle lateral wall of the body side wall of the threshing apparatus. It is characterized in that it is arranged in a position where it is located in the front and rear direction of the traveling body. The operation and effect are as follows.

[0005]

When the rotation speed of the rotary drive shaft changes to change the driving speed of the transfer device for traveling speed change, the chain sprocket changes its speed due to the transmission of rotational power from the rotary drive shaft by the transmission mechanism, and the speed of the threshing feed chain is changed. Change the drive speed.
The chain sprocket drives the threshing feed chain to the transport end side, and drives the chain while the transport side of the threshing feed chain is in a tension state. The structure for transmitting the power from the rotary drive shaft to the chain sprocket on the side of the threshing device is constituted by a rotary transmission shaft, which is more compact than that constituted by a transmission belt or the like.

[0006]

According to the present invention, the threshing feed chain is driven by transmission from the rotary drive shaft for driving the pre-processing unit. Due to the drive on the end side, it is easy to avoid transport failure due to slack on the transport side of the threshing feed chain, etc., and the threshing feed chain shifts with the pre-processing unit shift and the culm transport without slip. Now I can work efficiently from both sides of smooth operation. In addition, even if a drive mechanism for Karino or a screw conveyor exists on the threshing feed chain side of the threshing device,
Due to the compact structure of the transmission mechanism, the whole threshing apparatus can be formed relatively compactly and advantageously.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 4, a raising device 1 and a cutting device 2 acting on a planted grain culm, and a transport device 3 for transporting the harvested grain culm from the cutting device 2 to the rear of the machine.
Is connected to the front part of the crawler-type traveling machine body 4 so as to swing up and down around the axis X, and is configured to be moved up and down by a lift cylinder C. A threshing device 7 configured to supply the harvested culm to a handling room (not shown) by a threshing feed chain 5 and threshing by a rotating handling cylinder 6, and a control section having a driving seat 8, In preparation for the traveling body 4,
A combine is configured.

In order to enable the driving of the pre-processing unit A and the threshing device 7 and to enable the machine to travel, an engine E is provided at a position below the driver's seat 8 of the traveling machine 4 and the engine E 1 is configured as shown in FIG. 1 and FIG. That is, the hydraulic continuously variable transmission 10 configured to transmit the rotational output of the engine E via the transmission belt 9 is attached to the traveling transmission 11 and the output of the continuously variable transmission 10 is controlled. By linking the shaft 10a with an input portion (not shown) of the traveling mission 11, the rotational output of the engine E can be transmitted to the left and right crawler traveling devices 12, 12 as a driving force. The running speed is changed by changing the driving speed of the crawler running device 12 by the switching operation of the step transmission 10. The output shaft 10 a of the continuously variable transmission 10 for traveling is linked to one end of a rotary drive shaft 15 for driving the pre-processing unit by a transmission belt 13.
The rotary drive shaft 15 is disposed laterally at a position located on the front side of the traveling machine body of the threshing device 7 so as to be accommodated in the machine frame 14 which is a transmission case of the pre-processing unit A, and the transmission shaft 20 is Power to the raising device 1 and the mowing device 2 through the power transmission shaft 2
By transmitting the rotational power to the transfer device 3 via the transmission 1, the engine output is caused via the continuously variable transmission 10 for traveling, and the driving force is transmitted to the device 1, the mowing device 2 and the transfer device 3 as driving force. It is to be transmitted. That is, the raising device 1, the mowing device 2, and the transport device 3 can be driven while changing the speed in synchronization with the shift of the crawler traveling device 12 by the continuously variable transmission 10 for traveling. The first transmission including the transmission belt 16, the rotation transmission shafts 17 and 18, and the feed chain driving mission 5 a starts from the end opposite to the side where the transmission belt 13 is wound by the rotation of the preprocessing unit drive shaft 15. Mechanism 19
As a result, the threshing feed chain 5 is driven while transmitting the driving speed to the change of the driving speed of the preprocessing unit A by transmitting the driving force to the chain plot 26 for driving the threshing feed chain 5. I have to do it. The threshing mission 22, the transmission belt 23, and the rotary transmission shafts 17 and 18 constitute a second transmission mechanism 24 for the change plot 26. That is, the threshing mission 22 receives the engine output through the input belt 25, and the transmission belt 23 transmits the rotating power of the output shaft 22 a of the threshing mission 22 to the rotary transmission shaft 17, so that the second transmission mechanism 24 is driven by the engine. The rotational output of E is transmitted as a driving force to the threshing feed chain 5 without passing through the continuously variable transmission 10 for traveling and the preprocessing unit A.

A tension member 9a acting as a traveling clutch acting on the transmission belt 9, a tension member 16a acting as a clutch acting on the transmission belt 16, and a tension member 23a acting as a clutch acting on the transmission belt 23 are provided. As a result, the first transmission mode for the mowing operation and the second transmission mode for the pillow handling operation are selectively presented. That is, the tension member 9a is operated to apply the transmission tension to the transmission belt 9, and the tension member 16a is operated to apply the transmission tension to the transmission belt 16, and the tension member 23a is operated.
When the cutting operation is performed to release the tension applied to the transmission belt 23, the first transmission mode is brought out. That is, due to the transmission tension of the transmission belts 9 and 19, the rotation output of the continuously variable transmission 10 is transmitted to the crawler traveling device 12, the preprocessing unit A, and the threshing feed chain 5, and the traveling speed is changed. Therefore, even if the speed and the amount of the grain stalk entering the pre-processing section A change, the raising device 1, the mowing device 2 and the transporting device 3 operate at the speed and the amount of the grain stalk entering the same without excess or shortage. In addition, the threshing feed chain 5 can be operated at a speed that is not excessive or insufficient in the speed and the amount of the transported stalks by the transport device 3. Then, the power transmission belt 23 is not transmitted to the threshing feed chain 5 due to the non-transmission slack of the power transmission belt 23. The tension body 9a is cut to release the tension applied to the transmission belt 9 so that the tension body 16a is
When the cutting operation is performed to release the tension application to the transmission belt 23 and the tension body 23a enters the transmission belt 23 so as to apply the transmission tension, the second transmission mode is brought out. . In other words, the transmission output of the traveling continuously variable transmission 10
The threshing feed chain 5 is transmitted to the chain sprocket 26 without passing through the pre-processing unit A, and the threshing feed chain 5 can be driven. 5 becomes possible. Then, due to the looseness of the transmission belts 9 and 19 for non-transmission, the continuously variable transmission 10 for traveling is used.
And the threshing feed chain 6 no longer transmits power to the crawler traveling device 12 and the pre-processing unit A, so that the traveling of the machine body is stopped and the driving of the raising device 1, the mowing device 2 and the transporting device 3 is stopped. It becomes possible.

The chain sprocket 26 drives the threshing feed chain 5 toward the end of conveyance so that the threshing feed chain 5 is driven in a chain while preventing slack due to conveyance resistance and the like from occurring. The threshing feed chain 5 is disposed on the transport end side. In order to reduce the size of the first transmission mechanism 19, a mechanism portion of the first transmission mechanism 19 located on the side of the threshing device 7 becomes compact.
As shown in FIGS. 2 and 3, the traveling body is disposed in a longitudinal direction of the traveling body on a lateral side of the traveling body on the lateral wall 7 a of the threshing device 7.

Reference numeral 13a shown in FIG. 1 is a tensioning body as a mowing clutch body for switching the transmission belt 13 between a transmission-on state and a transmission-off state. Reference numeral 25a denotes a tension body as a threshing clutch body, which switches the input belt 25 between a transmission-on state and a transmission-off state.

[Alternative Embodiment] To configure the first transmission mechanism,
The transmission belt 16 may be omitted, and the rotation power of the rotation drive shaft 15 may be transmitted to the transmission 5a only by the rotation transmission shaft. The second transmission mechanism 24 may be omitted and implemented.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 Transmission system diagram

FIG. 2 is a side view of a first transmission mechanism.

FIG. 3 is a sectional view of a first transmission mechanism portion.

FIG. 4 is a side view of the entire combine.

FIG. 5 is a conventional transmission system diagram.

[Explanation of symbols]

 2 Cutting device 3 Transport device 5 Threshing feed chain 7 Threshing device 7a Body side wall 10 Traveling transmission device 10a Output shaft 15 Rotation drive shaft 18 Rotation transmission shaft 19 Transmission mechanism 26 Chain sprocket A Pre-processing unit

Claims (1)

(57) [Claims] 1. A cutting device comprising a cutting device (2) and a conveying device (3), wherein the planted grain culm is cut by the cutting device (2), and the harvested grain culm is threshed by the conveying device (3). ), And a rotary drive shaft (15) for driving the preprocessing unit (A).
A drive mechanism for a combine, which is disposed laterally at a position located on the front side of the traveling body of the threshing device (7) and is linked to an output shaft (10a) of a traveling transmission (10), wherein A chain sprocket (26) for driving the feed chain (5) is arranged on the transport end side of the threshing feed chain (5), and is transmitted from the rotary drive shaft (15) to the chain sprocket (26) and rotated. A transmission mechanism (19) including a transmission shaft (18) is provided, and the rotary transmission shaft (18) is provided at a position located on a lateral side of the vehicle lateral wall (7a) of the threshing device (7). The drive structure of the combine arranged in the front-back direction.