JPS6216817Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a weeding device in the reaping section of a combine harvester.

That is, in the reaping section of a combine harvester, which is constructed by installing an appropriate number of horizontal lifting cases equipped with tines that protrude from below to above,
Before the raising is carried out using the above-mentioned raising case, the planted grain culms that have fallen down in the horizontal direction or are in a spiral state are raised by means of the dividing and raising case, and the weeds are separated and inherited by the raising case. However, it is possible to adapt the raising and weeding action of the weed raising case according to the lodging state of the weed raising case, and to ensure that the handing over to the raising case is always carried out smoothly and suitably. It is something to do.

Next, the embodiment shown in the drawings will be described.

Figure 1 shows a side view of the front part of the combine harvester, and shows the threshing section D mounted on the machine body supported by crawlers 4.
A reaping section C is installed in front of the reaping section C, and the reaping section C has a conventional structure equipped with a reaping blade 5, a raking belt 6, a lower conveyance chain 7, an upper conveyance tine 8, a vertical conveyance chain 9, etc. Configure.

In addition, at the frontmost part of the reaping part C, four grass cutting bodies 10, 11, 12, and 13, each having a different shape, are arranged side by side at intervals in the horizontal direction, and at the rear between each grass cutting body, a grass cutting body oriented horizontally is placed. Three lifting cases A, each equipped with a tine 1 that protrudes from the bottom to the top.
is installed diagonally to form a multi-row structure similar to the conventional structure, and from the transmission shaft 15 inside the transverse transmission case 14 spanning the upper rear part of each lifting case A to the upper part of each lifting case A. Drive sprocket 1
Reaping section C
The upper part of the transmission case 17 extending from the rear lower part of the transmission case 14 is connected to the right end of the transmission case 14 so as to transmit power thereto.

A grass-pulling case B, which is forward-facing and equipped with tines 2 that protrude from the bottom to the top, is installed on the outside diagonally forward side of the left-hand side of the left-hand pulling case A, which is the uncut side of the machine. The above-mentioned case A
At the same time, a support plate 18 is provided on both sides at the lower end of the weed raising case B, which is perpendicular to the front surface of the weed raising case B, which extends in the front and rear directions. . A support shaft 21 is integrally fixed so as to coincide with the lower width center of the grass cutting body 10, and is connected to the front of the reaping frame 22 on the left side of the machine body.
A support ring body 24 is connected to the inner side of the bending frame 23 that supports the support shaft 21.
The upper part of the case B is installed so as to be rotatable about the lower support shaft 21 as the fulcrum O, and the upper part thereof can be tilted laterally.

A guide support plate 25 is provided between the inner surface of the weed raising case B and the front surface of the rear raising case A to guide and support the grain culm. One end side is attached to the inner surface of the weed raising case B with a bolt 26, and the other end of the guide support plate 25, which is formed so as to extend from the front side of the raising case A, has two upper and lower positions at the above-mentioned fulcrums O. 27, 27 are respectively formed around the center, and setting bolts 28, 28 screwed into the front surface of the lifting case A are inserted into the circular arcing holes 27, 27 to change the inclination of the raising case B. It is configured such that it can be fixed or unfixed freely by set bolts 28, 28, and its inclination can be adjusted.

One end of the movable case 30 is connected to the tip of the cylindrical body 29 that is connected to the outside of the upper part of the weed raising case B,
A drive shaft 3 extends from the inside of the transmission case 30 through the cylindrical body 29 and into the upper part of the splitting case B.
1 to drive a sprocket 32 for driving the tines 2, and a female spline shaft 34 is connected to the end of the transmission shaft 15 protruding from one end of the transmission case 14 via a universal joint 33. A sliding and bendable transmission shaft 3 is interposed between the female spline shaft 34 and one end side of the transmission case 30, and the transmission shaft 3 is a male spline spline-fitted to the female spline shaft 34. It has a structure in which it is connected to a shaft 35 via a universal joint 36, and is installed in the transmission case 30 so that transmission can be transmitted from the transmission shaft 3 to the drive shaft 31 via a sprocket chain 37.

In addition, in the front right side of the intermediate pulling case A, a grass pulling case b equipped with tines 2, like the grass cutting case B, is installed obliquely without being inclined laterally, and the side surface of the case b is A guide support plate 38 is stretched between the front side of the lifting case A, and a universal joint 4 is installed at the end of the transmission shaft 40 that drives the sprocket 39 at the upper part of the inside of the pulling case B.
1 to connect a female spline shaft 42 to the shaft 4.
A male spline shaft 43 spline-fitted to the drive shaft 31 is connected to the drive shaft 31 via a universal joint 44.

Therefore, power can be transmitted from the transmission shaft 15 inside the transmission case 14 to each pulling case A, and the power can be transmitted from the transmission shaft 15 to the transmission shaft 3, inside the transmission case 30, and through the drive shaft 31 to the two-way pulling shaft. Power can then be transmitted into cases B and b.

Also, loosen the set bolts 28, 28, and rotate the weed raising case B laterally about the lower fulcrum O as shown by arrow A in Fig. 8 to change the desired inclination. By tightening the set bolts 28, 28, it is possible to change the inclination of the weed raising case B in the lateral direction.
5,43 sliding and universal joint 3
The refraction at the angles 3, 36, 41, and 44 allows the transmission path to adapt to the inclination, so that there is no problem in transmission.

However, when the machine moves forward during combine harvesting work, the tines 2 of both weed raising cases B and b turn forward from below to above against the planted grain culms that are lying down laterally or forming a spiral shape. The weeds can be separated by being pulled up by moving the mower, and then the tines 1 of each raising case A are raised and the combine harvester operation can be continued while cutting with the cutting blades 5.

In this case, by changing the inclination of the weed raising case B in the lateral direction as described above according to the lodging state of the grain culm, the weed raising action can be adapted to the lodging state.

At this time, the guide support plate 25 is placed in the weed raising case B.
At the same time, the grain culm is passed from the weeding case B to the front of the weeding case A and moves laterally to adjust the inclination of the weeding case B, and is inherited by the weeding case A. is this guide support plate 2
It is guided so as to lean against Case 5 and is smoothly raised, allowing Case A to take over.

In addition, by tilting the weed pulling case B in the horizontal direction, the reaped culm and the uncut culm to be weeded can be pushed far apart toward the uncut side, thereby preventing damage to the uncut culm due to the forward movement of the machine. can be made to decrease.

As described above, the present invention provides that, in the reaping section of a combine, which is constructed by installing an appropriate number of lifting cases A diagonally, each of which is horizontal and equipped with tines 1 that protrude from below to upward, the above-mentioned lifting cases on the uncut side The case B is equipped with tines 3 that move forward diagonally forward on the outside and protrude from below to above, and with the lower end as a fulcrum O, the grass is raised so that the inclination can be changed in the lateral direction, and a case B is installed therein. A guide support plate 25 is extended from the inner surface of the splitting case B to the front surface of the case A, and the side of the case A of the guide support plate 25 is raised and fixed to the front surface of the case A. Alternatively, since the structure is designed to be able to freely release the fixation and adjust the horizontal inclination of the weed raising case B, it is possible for the grass to fall horizontally or to form a spiral state before being raised by the raising case A. The planted grain culm, which is in the position of Although the raising and weeding action is adapted by adjustment, the inclination adjustment is achieved by extending a guide support plate 25 from the inner surface of the weeding case B and aligning it with the front surface of the raising case A. The raising of the guide support plate 25 is carried out by raising the side of the case A and fixing or releasing the fixation to the front surface of the case A. Therefore, the guide support plate 25 adjusts the inclination of the case B and separates it. Grass raising case B
It has the feature that it can be carried out smoothly and favorably by moving laterally in a state where it is stretched over the front side of the raising case A and guiding the grain culm inherited by the raising case A so as to lean against it, thereby always making it smooth and good.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view of the front of the combine harvester, FIG. 2 is a front view of a portion thereof, FIG. 3 is an enlarged view of a portion of FIG. 1, and FIG. is a plan view of a part of Fig. 3, Fig. 5 is a front view of a part of Fig. 3, Fig. 6 is a plan sectional view of a part of Fig. 2, and Fig. 7 is a partial plan view of Fig. 6. The front sectional view, FIG. 8, is an explanatory diagram of the operation of FIG. 2. 1... Tine, A... Raising case, 2... Tine, B... Grass raising case, O... Fulcrum, 2
5...Guidance support plate.

Claims (1)

[Scope of utility model registration request] In the reaping section of a combine, which is constructed by installing an appropriate number of lifting cases A diagonally, each of which is equipped with tines 1 that move sideways and protrudes from below to upward, the lifting case A faces diagonally forward on the outside of the lifting case A on the uncut side. The grass-pulling case B is equipped with tines 2 that protrude from the bottom to the top, and the grass-pulling case B is installed with the lower end as a fulcrum O so that the inclination can be changed laterally. A guide support plate 25 is extended from the inner surface of the case A to the front side of the case A, and the side of the case A of the guide support plate 25 is raised so that it can be fixed or unfixed to the front surface of the case A. A weed cutting device in a reaping section of a combine harvester, characterized in that the lateral inclination of a weed pulling case B can be adjusted.