JPH09215426A - Second mower of ordinary type combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the second mower, which is fitted in front of the crawler of the ordinary type combine harvester, by making the second mower possible to be elevated and lowered almost parallel to the elevating and lowering direction of a reaping part, making it easy to set the reaping height of a remaining stem, and reaping a shared stem well. SOLUTION: The ordinary type combine harvester which is provided laterally with a shearing blade 17 atop of a platform 15, couples the platform 15 and a threshing device by a feeder house 13, and elevates and rotates the platform 15 and feeder house 13 on a machine body frame 2 by a hydraulic cylinder 14 is provided laterally with the second mower A, which further cuts remaining stems after sharing by the shearing blade 17, below the feeder house 13. The second mower A is supported by the feeder house 13 and so constituted as to move up and down in a nearly parallel movement state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a second mower mounting structure provided in front of a crawler of a normal combine harvester.

[0002]

2. Description of the Related Art Conventionally, a grain cutter was cut with a cutting blade provided in the front of a feeder house of an ordinary combine harvester, and the grain shoot was scraped into the feeder house and delivered to a thresher. Since the ground height at the time of mowing is high and it is not possible to mow from the root of the grain culm, it is known that a second mower is provided between the cutting blade and the crawler to mow the residual culm after mowing. is there. For example, Japanese Patent Laid-Open No. 62-195217 and Japanese Utility Model Laid-Open No. 63-10838.
This is the technology of Japanese Patent Publication No. In addition, the technique of raising and lowering the harvesting section of the combine with a parallel link mechanism is disclosed in Japanese Utility Model Publication No. 50-43.
The technique as described in Japanese Patent No. 454 is publicly known.

[0003]

However, the conventional mounting technique of the second mower is as shown in FIG.
Since the center of rotation of the second more A'is provided above, the mowing part of the second more A'has to be raised and lowered in an arc shape, and when cutting in the ascending state, the grain culm enters from the back side of the cutting blade. Since the grain stalks were to be mowed, they fell down before cutting the grain culms, and it was not possible to mitigate them neatly. In view of such a point, the present invention is configured as follows so that the second mower can be moved up and down in a state of moving substantially in parallel.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. A cutting blade 17 is provided laterally at the tip of the platform 15, and the platform 15 and the threshing device are connected by a feeder house 13, and the hydraulic cylinder 1
In the ordinary combine harvester in which the platform 15 and the feeder house 13 are rotated up and down with respect to the machine body frame 2 by 4, the second mower A is further cut below the feeder house 13 after cutting with the cutting blade 17. Is installed horizontally, and the second mower A is supported by the feeder house 13 and is configured to move up and down in a substantially parallel movement state.

[0005]

The object of the present invention is as described above, and an embodiment of the present invention will be described based on the configuration of the embodiment shown in the accompanying drawings. 1 is an overall side sectional view of a normal combine, FIG. 2 is a perspective view of a second mower elevating part of the present invention, FIG. 3 is a side view of the same, FIG. 4 is a perspective view of a second mower supporting part on the opposite side, and FIG. 5 is a cutting blade. 6 is a perspective view when the second mower is raised, and FIG. 7 is a perspective view when the second mower is lowered.

The overall structure will be described with reference to FIG. A body frame 2 is placed on the crawler type traveling device 1, and a mission case 3, an engine compartment 4, and a cabin 5 are arranged in a front portion of the body frame 2. From the center of the machine body frame 2 to the rear of the machine, a sorting device including Karatan 6, chaff sheaves 7, grain plates, etc. is placed, and a crimp net 8 is placed on the sorting device.
A threshing device including the screw rotor 9 and the screw rotor 9 is provided. A grain tank 10 is arranged at the rear of the cabin 5 to store fine grains, and a discharge auger 11 is projected on the grain tank 10.

A feeder house 13 having a feeder conveyor 12 therein is connected to the front end of the screw rotor 9, and the feeder house 13 is moved up and down by a hydraulic cylinder 14 interposed between the feeder house 13 and the front end of the machine frame 2. . The platform 1 is provided at the front of the feeder housing 13.
5, the platform auger 16 is provided horizontally in the platform 15. The platform 1
A cutting blade 17 is provided in the front part of the No. 5 and a divider 18 is provided at the front end.
Is projected and scraped onto the divider 18 by the reel 19
Are arranged.

Below the feeder house 13, the second mower A of the present invention is provided. That is, as shown in FIGS. 2, 3 and 4, support plates 20 and 21 are attached to both side surfaces of the feeder house 13, and support shafts 22 and 23 penetrate the support plates 20 and 21 and the feeder house 13. The link mechanisms 24L, 24R, 25 and 26 are pivotally connected to both ends of the support shafts 22 and 23, and the support frame 27 is pivotally connected to the other ends of the left link mechanisms 24L and 25 to rotate the link 25. A stopper 28 that restricts downward rotation is provided at the base.

A support frame 29 is pivotally supported at the other ends of the right side link mechanisms 24R and 26, the center portion of the link 26 is pivotally supported at the support shaft 23, and the upper end of the cylinder 30 is at the opposite end. It is pivotally supported. However, it is also possible to pivotally connect the cylinder 30 to other links. A motor 31 is attached to a side surface of the cylinder 30, and the rotation of the motor 31 is transmitted to the cylinder 30 by a gear case 32 provided on the upper side of the cylinder 30. The cylinder 30 has a screw rod so that the cylinder rod 30a can expand and contract. I am configuring. The operation of the motor 31 can be performed by a switch in the cabin 5 and can be reversed.

The tip of the cylinder rod 30a is pivotally supported by a pin 33 standing on the support plate 20, one end of a connecting rod 34 is also pivotally supported by the pin 33, and the other end of the connecting rod 34 is at the other end. It is pivotally connected to the tip of an arm 35 that is pivotally supported in the middle of the support frame 29. A base of a tension arm 36 is fixed to the other end of a pivot shaft 37 fixed to the lower end of the arm 35, and the tension arm 36 is also pivotally supported by a support frame 29 to be rotatable. A tension pulley 40 is pivotally supported at the tip of the tension arm 36, and the tension pulley 40 is supported by the support frame 2
9, a pulley 41 pivotally supported on the upper portion of the support frame 29 and a gear case 42 provided on the lower end of the support frame 29, and a pulley 43 protruding to the side surface.
The belt 44, which is interposed between the two, can be tensioned.

A drive shaft 45 is provided in front of the gear case 42.
The rocking link 46 is fixed to the drive shaft 45, and the link 47 is moved left and right to reciprocate the cutting blade 49, as shown in FIG. The structure for driving the cutting blade 49 is such that a sprocket 57 is fixedly mounted on an output shaft 56 for driving the feeder conveyor 12 which is horizontally installed above the feeder house 13, and the sprocket 57 and the support shaft 2 are fixed.
A chain 55 is wound between one of the two sprockets 53, 54 pivotally supported on the shaft 3, and a sprocket 51 fixed to a shaft 50 standing on the support frame 29. Chain 52 in between
And the pulley 43 fixed on the shaft 50 is rotated through the belt 44 to rotate the pulley 43.
The power is transmitted to the drive shaft 45 to drive the cutting blade 49 from the drive shaft 45.

In such a structure, the cylinder 30
In the state of contracting, the second mower A is in a raised state, the belt 44 is in a loosened state, and the tension pulley 40 is in an idle state, as shown in FIG. Then, the motor 31 is driven to drive the cylinder 30.
As shown in FIG. 7, when the pin is extended, the pin 33 is stretched and the link 26 is rotated around the support shaft 23, and the link mechanism 24L, 24R, 25, 26 arranged in parallel is pivoted to the other end. The supported support frames 27 and 29 are rotated downward substantially in parallel. At the same time, the connecting rod 34 connected to the support frame 29 is also rotated downward, the arm 35 is pushed and the tension arm 36 is also rotated, the belt 44 is tensioned, and power is transmitted from the pulley 41 to the pulley 43. The cutting blade 49 is reciprocated.
In addition, as the second more A is raised, the pressing force of the tension pulley 40 is reduced, and the power transmission is cut off at the maximum raised position.

[0013]

According to the above configuration, the present invention has the following effects. First, by raising and lowering the second mower A in a substantially parallel movement state, unlike the conventional technique, the second mower does not move up and down in an arc shape, and when the second mower is cut in the raised state, the back side of the cutting blade The grain culms did not enter and were not cut, and there was no longer the possibility of tipping the grain culm before cutting it or cutting the grain slant diagonally with the cutting blade. As a result, the durability of the cutting blade 49 of the second mower A was improved, and it was possible to make the stock root tidy after cutting. Secondly, the cutting height by the main cutting blade 17 of the ordinary combine harvester is
It is determined by vertically rotating the portion of the cutting blade with respect to the machine body frame 2. However, the second mower A is also moved up and down as the main cutting blade 17 is moved up and down. The cutting height of the remaining culm will be adjusted when the cutting height of the remaining culm is further adjusted with respect to the cutting height of 17 so that the cutting height of the residual culm can be easily set. Thirdly, as in the conventional case, the second mower A moves up and down together with the cutting blade 17 instead of moving up and down the platform 15, the platform auger 16 and the cutting blade 17 independently of each other. Apart from the raising and lowering of the reaper, it is no longer necessary to perform the raising and lowering operations of the second mower A in parallel, and the operability during work can be improved. Fourth, when the feeder house 13 is fully raised, the second mower A is also raised at the same time, so that the front of the lower part of the aircraft can be greatly raised to provide an open space.
The second mower A is less likely to get in the way during maintenance below 3.

[Brief description of drawings]

FIG. 1 is an overall side sectional view of an ordinary combine harvester.

FIG. 2 is a perspective view of a second mower elevating part according to the present invention.

FIG. 3 is a side view of the same.

FIG. 4 is a perspective view of a second mower supporting portion on the opposite side.

FIG. 5 is a perspective view of a cutting blade drive unit.

FIG. 6 is a perspective view when the second mower is raised.

FIG. 7 is a perspective view of the same when descending.

FIG. 8 is a side view of a conventional second mower mounting portion.

[Explanation of symbols]

 A Second More 13 Feeder House 22,23 Support Shaft 24L, 24R, 25,26 Link Mechanism 27,29 Support Frame 30 Cylinder

Claims (1)

[Claims] 1. A cutting blade 17 at the tip of the platform 15.
In the ordinary combine harvester in which the platform 15 and the threshing device are connected by the feeder house 13 and the platform 15 and the feeder house 13 are rotated up and down with respect to the machine frame 2 by the hydraulic cylinder 14, A second mower A for cutting the remaining culm after cutting with the cutting blade 17 is provided laterally below 13, and the second mower A is supported by the feeder house 13 and is configured to move up and down in a substantially parallel movement state. A second type of ordinary combine harvester that is characterized by that.