JPH0325544Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Field of industrial application The present invention relates to a straw binding machine for a combine harvester that binds and discharges waste straw discharged from a threshing device.

(b) Prior art Conventionally, in a combine harvester's waste straw bundling device, the bunker of the bundling device that binds the waste straw discharged from the threshing device is composed of a plurality of raking arms, so that the stock side and the ear side are approximately equally spaced. It is already known to provide raking and to move the tying device towards the culm relative to the threshing device to accommodate changes in the tying position or changes in culm length.

(c) Problems to be solved by the invention In the above-mentioned known straw tying device for a combine harvester, when the tying device is adjusted to move toward the tip side of the straw with respect to the threshing device, the raking of the most tip side of the husker The arm scrapes the flexible tip of the straw, so
When the tip of the stalk is bent and raked, some of the waste straw moves toward the plant base, disrupting the collecting posture of the waste straw, causing the tying string to shift, resulting in tying errors or loose tying. The culm fell out.

Furthermore, when adjusting the movement of the bundling device towards the tip side, the scraping arm closest to the tip comes into contact with the input transmission part or the mounting frame, etc., which narrows the adjustment range of movement and makes it impossible to tie the tips near the tip. Nakatsuta.

(d) Means for Solving the Problems The present invention consists of a plurality of raking arms in the bundling device, and the raking arm closest to the tip of the ear can be attached and detached separately from the other raking arms. By attaching it to the head, when moving the tying device toward the tip side, by removing the raking arm closest to the tip, it is possible to move the straw to the stock base during raking, and adjust the movement of the tying device toward the tip side. The above-mentioned problems were solved by preventing the problem from becoming an obstacle.

(E) Action When the bundling device is set at the middle part of the waste straw to be collected or at the part corresponding to the stock side, the packer is set to 3.
When using a book raking arm to scrape the waste straw discharged from the threshing device into the collecting part of the tying device and move the tying device toward the ear side to set it, remove the raking arm closest to the ear tip. If you move and set it after moving it, the tip of the ear will not be bent during raking and the waste straw will not move toward the stock base, and the tying device can be moved sufficiently toward the ear to attach it. It becomes possible to unite.

(F) Example An example of the present invention will be explained with reference to the drawings.
Reference numeral 1 denotes a threshing device mounted on the base of a combine harvester, and a binding device 5 is attached to the rear surface of a cutter 2 attached to the rear of the threshing device by means of a support frame 3 so as to be adjustable in horizontal movement. It faces the rear of the straw removal conveying device 6 whose rear end reaches above the cutter 2, and has a knotting section 8 and a discharge arm 9 at the top of the collecting section 7, a packer 10 and a needle 11 at the bottom, and a door 1 at the rear.
2, the tuberosity axis 1
3 and the needle 11 are driven directly or via a chain case 14a by a timing shaft 14 which rotates intermittently when the clutch is engaged once by the sensing operation of the door 12, and the timing shaft 15 rotates constantly in conjunction with the input spline shaft 16. It is constantly rotated by the gear 17 that rotates.

The packer shaft 15 is connected to the transmission case 18.
Crank arms 20 and 21 are fixed to both ends of the crank arms 20 and 21, respectively, and the packer 10 has one raking arm 10a located on the ear side from the transmission case and three raking arms 10a on the stock side. Arm 10
b, 10c, and 10d, the scraping arms 10b and 10c on the stock side are integrally connected, and one scraping arm 10b projects from the swing arm 22 and the crank arm 20 on the stock side. The raking arm 10d closest to the stock side is removably screwed onto the side surface of the raking arm 10c, and the raking arm 10a on the ear side has its base pivotally supported on a fulcrum shaft 24. The swing arm 23 is interlocked with the crank pin 25 protruding from the crank arm 21, and the base of the crank arm 21 on the ear side is removably attached to the packer shaft 15 with a bolt 26. The swing arm 23 is removably attached to the fulcrum shaft 24 with a pin 27, so by removing the bolt 26 and pin 27, the scraping arm 10a can be moved to the crank arm 2.
1 and the swing arm 23, and after removal, the collar 28 can be attached to the packer shaft 15.
It is designed to fit into the end of the bolt 26 and fasten with the bolt 26, and as shown in FIG. Plate 2 with
9 and a cylinder 30 welded to the crank arm 21 to prevent winding. When a pipe 30a fixed to the scraping arm 10a instead of the cylinder 30 is loosely fitted onto the crank pin 25 as shown by the dotted line in FIG.
5a only rotates back and forth through a predetermined angle while covering the crank pin 25.
It is possible to efficiently prevent winding of the material.

The support frame 3 is constructed by connecting both sides of a pipe 31 at the front upper part and a pipe 32 at the rear lower part with pipes 33, 33 which are L-shaped in side view. The rear part is supported on the base of the combine by struts 35, 35, and U-shaped guides 38 are attached to the struts 37, 37 rising from horizontal rods 36 welded to the transmission case 18 of the binding device 5. Welded, the U-shaped guide 38
is fitted into the front pipe 31, and a U-shaped guide 41 is also fixed to a bracket 40 welded to the rear of the transmission case 18.
1 is loosely fitted into the rear pipe 32, so that the binding device 5 and the guide plate 42 which is integrated with it and extends from the upper part of the cutter 2 to the convergence part 7 can be adjusted laterally, and the binding device 5 can be adjusted from the conventional one. When setting in a similar bundling position, a removable stopper 4 is inserted through the ear end of the U-shaped guide 41 into the pipe 32.
3, and when binding the ear side, use the stopper 4.
3 is removed and the binding device 5 etc. are moved until they come into contact with the fixed stopper 44 on the ear side and then stopped.

Furthermore, a support frame 46 for the input spline shaft 16
also serves as a cover for input sprocket 47,
The input sprocket 47 is driven by the rotating shaft 2a of the cutter 2 via a chain 48.

In the above-mentioned combine harvester, when bundling the middle part of the waste straw discharged from the waste straw conveying device 6 of the threshing device 1 or near the base of the stock, the waste straw can be bundled by setting it in the position shown by the solid line in FIGS. 2 and 6. is police car 10
The straw is raked into the collecting part 7 by the four raking arms 10a, and the straw is collected. When the doors 12 are aligned by the alignment plate 50 and the focusing amount reaches a predetermined amount, the door 12 is sensed and activated.
One rotation clutch is inserted, needle 11, knot 8
etc. are actuated to knot, and the discharge arm 9 discharges the bundle while unclipping the knot.

In addition, when binding the ear side, remove the raking arm 10a of the packer 10 that is closest to the ear, and then move the binding device 5 to the ear side as described above and set it. The ear side of the waste straw, whose stock position remains approximately constant through processing, is tied up and released.
The raking arm 10a located closest to the ear of the straw is removed when it is moved to the position shown by the chain line in FIG. It is flexible and bends when you scratch it, causing it to move toward the base of the stock, but since the scraping arm 10a is removed, such a phenomenon does not occur.

(g) Effect of the invention Since the invention is configured as described above, when the straw discharged from the threshing device is tied at the same position as in the past, the plurality of raking arms 10a of the packer 10 are used.
Although it is possible to rak in an orderly manner from the stock side to the panicle side, by removing the raking arm 10a closest to the panicle when tying the panicle side of the straw, the raking arm 10a that is closest to the panicle can be removed. The flexible panicle side bends and prevents the waste straw from moving toward the stock base, which causes the tying cord to move toward the stock base, causing bundling errors, or loose tying, which causes the culm to fall out. In addition, when moving the tying device to the ear side and setting it to bind the ears, the raking arm closest to the ear side does not become an obstacle, expanding the range of movement adjustment. can do.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention,
Figure 1 is a side view of the binding device attached to the rear of the combine, Figure 2 is a plan view of the same as above, Figure 3 is an expanded sectional view of the binding device, Figure 4 a is a sectional view of the main part, and b is the winding. A side view of the preventer, Figure 5 is a sectional view of the end of the crankshaft after removing the scraping arm, and Figure 6 is a cross-sectional view of the end of the crankshaft after removing the scraping arm.
FIG. 7 is a sectional view taken along line AA in the figure, and FIG. 7 is a sectional view taken along line BB in FIG. 3... Support frame, 5... Binding device, 10... Packer, 10a, 10b, 10c, 10d... Scraping arm.

Claims (1)

[Scope of utility model registration request] In a combine harvester in which a tying device 5 is movably attached to the straw discharge portion of the threshing device 1 in the direction of the culm, the tucking device 10 of the tying device 5 is composed of a plurality of raking arms 10a... A straw tying machine for a combine harvester, characterized in that a raking arm 10a is attached so as to be detachable separately from other raking arms 10b.