JPH0545154Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a forced weeding machine for a harvester that can adjust the protruding state of the tines that pull up grain culms while weeding them at the front of the machine. Regarding equipment.

[Prior Art] Conventionally, in a harvesting machine, a forced weeding case with tines that protrude from the bottom to the top and move toward the front of the machine body is installed diagonally at the front of the machine body, and the tines can be adjusted in and out. Something that can be done is seen in Japanese Utility Model Publication No. 59-26820, but if you move and adjust the upright guide inward, the tines will no longer protrude upward from the bottom of the forced weeding case, so when working,
Thatch and weeds scattered in the field can get stuck or clog the lower part of the case, and when the tines are adjusted to working condition again, they may not move or the tines or chain may be damaged. It had some problems.

[Problems to be solved by the invention] This invention solves such problems, and in cases where the grain culm is not lying down laterally, the tines are placed inside the case so that they do not get in the way. It can be stored as well as before, and even in the stored state, one or more tines always protrude from the lower front of the case to prevent straw and weeds from getting caught or becoming clogged when working in the field. In addition, the projecting tines can be moved to project well, and the structure is simple and can be suitably implemented.

[Means for solving the problem] Therefore, in the present invention, a lower raising guide is provided inwardly on the lower end side of the forced weeding case and has a length longer than the tine spacing of one pitch. A long upper erecting guide that is fixedly installed and extends close to the upper side of the erecting guide can be adjusted to switch between an operating state and a stored state by contacting or separating from the tines, and the upper side of the erecting guide is inside. The interior is constructed so that the inclination can be adjusted and the movement can be adjusted so as to be lower in the direction.

[Operation] Therefore, the tines protruding from the lower side of the case contact the lower side upright guide and remain upright, and then contact the upper side upright guide and move to protrude, and also cause the upper side upright guide to move. When moved inwardly, the tines facing this upright guide will fall down and can be stored inside the case so as not to get in the way.In this state, at least one tine that is in contact with the lower upright guide will remain protruding forward from the bottom of the case, and in the field these protruding tines can sweep away straw and weeds.Furthermore, by adjusting the inclination of the upright guide, the tines that move along the upright guide The grain gradually retreats while moving upward, and can be adapted to avoid damaging the grain culm depending on the length and lodging state of the grain culm.

[Example] Next, an example shown in the drawings will be described. Fig. 2 shows a side view of the front part of the combine harvester, in which a reaping part C is connected in front of the threshing part B supported by both crawlers 7, and the reaping part C faces in the lateral direction of the machine body and is opened from below. Each hoisting case 9 having tines 8 that protrude upward is arranged horizontally and installed diagonally in front, and each star foil 11 etc. is placed above the cutting blade 10 installed horizontally at the rear lower part of each hoisting case 9. It is constructed in the same manner as the conventional structure, with a lower conveying chain 12 and an upper conveying body 13 extending from above to the rear.

Both side lids 14 are provided in front of the sides of the lifting case 9.
Forced weeding case A formed by joining a and 14b
A chain 17 is attached to the sprocket 15 and the roller 16 which are installed vertically in the case A, and a chain 17 is attached to the sprocket 17, which protrudes from the front edge of the case A side and retracts from the rear edge B side of the case. The tines 1 to be inserted are pivoted at regular intervals, and a grass dividing plate 18 is installed diagonally in front of the lower part of the forced grass dividing case A, and a frame 19 extending to the rear thereof is used to cut the grass in the cutting section C. It is removably connected to a frame 20 and installed in a transmission case 21 extending rearward from the upper outer side of the forced weeding case A so as to be able to transmit power from the rear, similar to the conventional structure.

Between the ends of both side plates 14a and 14b that are on the rear edge side, a long interior frame 21 with a constant width and a U-shaped cross section is fitted so as to extend from near the bottom to the top. A buffer plate 22 with which the tines 1 come into contact is provided on the inner surface of the frame 21, and wing bolts 23a and 23b, which are inserted into both side ends of the interlayer frame 21, are attached to the ends of the side plates 14a and 14b, respectively. The nut 24 is screwed together to form an attachment structure.

An upright guide 2a is fixed inside the lower part of the forcible weeding case A so that the lower part approaches the roller 16 near the front edge A. Standing guide 2
A is formed to have a tine spacing length of approximately 1 pitch.

In addition, a long standing guide 2a that can be raised by contacting the base of the tine 1 is attached to the inside of the front edge of the forced grass splitting case A so that its lower part approaches the upper end of the standing guide 2a.
The lower end of the standing guide 2 is provided on both sides with side plates 14.
The long grooves 4, 4 into which the pins 3, 3 protruding from the inner surfaces of the plates 14a, 14b are fitted are formed inclined with respect to the longitudinal direction of the standing guide 2, and short extension grooves 4a, 4b parallel to the longitudinal direction of the standing guide 2 are formed at both ends of the long grooves 4, 4, respectively.
In the portions 4a and 14b, L-shaped grooves 6, 6 are formed, one side 6a of which is perpendicular to the longitudinal direction of the case and the other side 6b of which is parallel to the longitudinal direction of the case. Knob screws 5, 5 which fit into both L-shaped grooves 6, 6 from the outside are inserted into holes 2 on both sides of the upper end of the standing guide 2.
5, 25 are screwed into nuts 26, 26 fixed to the inside of the screws 26, 25, respectively.

Therefore, as shown in FIGS. 1 to 3, both pins 3, 3 fit into the extension grooves 4a at one end of the long grooves 4, 4, respectively, and both knob screws 5, 5 fit into the L-shaped grooves. When the tine 1 is tightened and fixed so as to fit into the end of one side 6a of 6, 6, the base of each tine 1, which stands up and protrudes from around the lower roller 16, is moved from the roller 16 to the upright guide 2a, and then to the upright guide 2a. As it moves in contact with the standing guide 2a, each tine 1 moves sideways while protruding upward from below with the front of the forced weeding case A facing the front of the machine. This means that planted grain culms that are lodging in the direction can be weeded and raised.

In addition, as shown in FIG. 7, both knob screws 5, 5
Loosen both knob screws 5, 5 on one side 6a.
When it is moved to the intermediate bent part of the L-shaped grooves 6, 6 on the other end side and tightened, the upper end of the upright guide 2 moves away from the front edge A of the case, and the entire upright guide 2 becomes inclined with respect to the longitudinal direction of the case. In this state, the tines 1 moving along the upright guide 2 are gradually retracted while moving upward, and the operating range of the tines 1 is adjusted to be shortened. This means that it can be adapted to prevent damage to the grain culm depending on the length and lodging state of the grain culm.

If the lifting operation using the tines 1 as described above is not required, as shown in FIG. When moved to the other end side of the L-shaped grooves 6, 6, both the pins 3, 3 slide in the long grooves 4, 4 and fit into the extension groove 4b side, where both the knobs When the screws 5 and 5 are tightened, the entire upright guide 2 will be moved inward away from the front edge A, and the tine 1 corresponding to this upright guide 2 will move into the case and become a nuisance. It will be stored so that it does not become a problem.

In this state, one or two tines 1 that contact the standing guide 2a remain protruding from the lower front of the forced weeding case A, and when working in the field in this state, scattering will occur in the field. Even if straw waste or weeds try to get caught on the lower side of the case, the protruding tines 1 can sweep them away and prevent them from getting caught.

Note that the upper butterfly bolt 23b is removed, and the interior frame 21 is moved along the arrow X using the lower butterfly bolt 23a as a fulcrum.
When rotated outward as shown in FIG. 3, the interior frame 21 can be opened outward as shown by the imaginary line in FIG.
This means that the rear edge and the bottom can be opened for cleaning the inside.

[Effect of the invention] As described above, the present invention allows the tines 1 to be switched and adjusted between the working state and the storage state by adjusting the movement of the upper side upright guide 2. In the storage state, the lower side upright guide 2a can be adjusted. Since one or more of the tines 1 that come into contact can always protrude to the front of the lower part of the forced weeding case A, straw and weeds that tend to get caught at the lower part of the case during work in the field can be effectively swept away. This makes it possible to smoothly switch and adjust the tines 1 from the retracted state to the protruding state.Furthermore, when adjusting the tilt of the standing guide 2, the tines 1 moving along the standing guide 2 move upward. As the grain culm gradually retreats, it can be adapted to prevent damage to the grain culm depending on the length and lodging state of the grain culm, and has the advantage that it can be carried out suitably with a simple structure. .

[Brief explanation of drawings]

Figure 1 is a side view of the main part, which is an example of the book;
The figure is a side view of the front part of the combine, Figure 3 is a side view of the forced weeding case, Figure 4 is a cross-sectional view of a part of Figure 3, and Figure 5 is a side view of the other part of Figure 3. A cross-sectional view, Figure 6 is an exploded view of a part of Figure 1, Figures 7 and 8.
Each figure shows an explanatory view of the operation in FIG. 1. 1...Tine, A...Forced weeding case, 2a...
...Stand-up guide, 2...Stand-up guide.

Claims (1)

[Scope of utility model registration request] In a harvesting machine configured by obliquely disposing a forced weeding case A at the front of the machine body, the forced weeding case A has tines 1 that protrude from the bottom to the top and move toward the front of the machine body. A lower side standing up guide 2a which contacts the tines 1 to stand up is fixedly installed with a length equal to or longer than the tine interval of one pitch, and a long upper side standing up guide 2 that extends close to above the standing up guide 2a. The erecting guide 2 is configured so that it can be switched between an operating state and a stored state by contacting or separating from the tines 1, and the upper side of the upright guide 2 is movable and adjustable so that its inclination can be adjusted to be lower inward. Features a forced weed pulling device.