JPH0518924Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Field of industrial application The present invention relates to a wrapping prevention device for a thresher that prevents straw waste from wrapping around a handling barrel for threshing grain culms.

(b) Prior art A conventional threshing machine in which a wrapping preventive body was provided on the outer peripheral surface of the outlet side of the handling barrel toward the discharge culm was disclosed in Utility Model Publication No. 55-11631.
This is already known from the publication No.

(c) Problems to be solved by the invention In the known threshing machine, the lower edge of the culm opening is located below the rotation locus of the anti-wrapping body, so an abnormal load is placed on the handling barrel during the threshing process. When it swung, the anti-wrapping body protruded from the culm and collided with the ear-side end of the culm, causing damage.

In addition, since the anti-wrapping body rotates at the part facing the upper part of the culm from the lower edge, its performance in scraping off straw hanging down from the lower edge is poor, and straw debris may fall into the handling chamber. It often got wrapped around the handling barrel.

(d) Means for solving the problem The present invention is a threshing machine in which a wrapping preventive body is provided on the outer peripheral surface of the handling drum on the side of the culm protruding toward the culm. By placing the winding prevention body close to the inner peripheral surface of the outlet side plate and raising the lower edge of the discharge culm so that the tip of the anti-wrapping body is approximately in contact with the inner circumferential surface of the outlet side plate, the handling cylinder is prevented from overloading and swinging. The anti-wrapping body simply contacts the inner peripheral surface of the outlet side plate.
It prevents the front surface (rotation direction) of the anti-wrapping body from colliding with the ear side end of the culm, and also scoops up the straw that hangs down from the culm below the lower edge and removes it by centrifugal force. The above-mentioned problem was solved by throwing the ball in the opposite direction.

(E) Action When the stock end of the grain culm is held between the feed chain and the starting end of the pinching rail installed along the handling port and the ear side is inserted into the handling chamber from the supply port, the handling teeth of the handling barrel will rotate and shed grain. The treated straw is discharged from the culm.

The anti-wrapping body protruding from the outer circumference of the terminal end of the handling barrel scoops up the straw hanging down from the lower edge of the culm and throws it away by centrifugal force, while at the same time removing the straw that accumulates at the ear side end of the culm. Scrape off debris.

When the handling cylinder is overloaded and shakes during such threshing process, the anti-wrapping body contacts the inner peripheral surface of the outlet side plate but does not protrude from the discharge culm opening. There is no collision with the ear side end of the culm.

(F) Embodiment An embodiment of the present invention will be explained about an overhandling type threshing machine shown in the drawings. 1 is an inlet side plate 2 and an outlet side plate 3.
The handling chamber 5 has a supply port 6 and a discharge port 7 at the front and rear, and a receiving net 8 is stretched from the back side to the lower part. is covered with a cylinder cover 8a, and a feed chain 1 is installed at the handling port 9.
0 and a pinch rail 11 are also installed.

Further, on the outer periphery of the truncated conical part on the supply port 6 side of the handling cylinder 1 and on the outer periphery on the discharge culm port 7 side, anti-wrapping bodies 12 and 13 made of elastic plates such as rubber or synthetic resin are provided.
is installed, and the wrapping prevention body 13 on the side of the culm opening 7 is attached.
is screwed on while being held down by a U-shaped mounting bracket 15.

The lower edge of the culm opening 7 is shown in FIGS. 2 and 3.
As shown in the figure, from the rotation locus of the outer circumferential surface of the handling cylinder 1, the height of the anti-wrapping body 13 or the mounting bracket 15 thereto is determined.
It is constructed in an arc shape with the height equal to the thickness of the plate.

In addition, a scattering prevention plate 16 made of an elastic plate hangs down from the upper part of the culm outlet 7 to the lower part of the ear side end, and the lower edge of the scattering prevention plate 16 and the lower edge of the culm outlet 7 hang down. The spacing is gradually narrower on the panicle side.

In the drawing, reference numeral 17 denotes a dish-shaped anti-wrapping plate screwed onto the inner surface of the outlet side plate 3.

In the above-mentioned threshing machine, the stock base of the grain culm is held and conveyed between the feed chain 10 and the pinch rail 11,
When the stock head is inserted into the supply port 6, the handling barrel 1 threshes the grain with its handling teeth 1a, and the grains and small straw waste that are being threshed fall from the sorting net to the swinging sorter and are swept away by the wind. The straw is selected and sieved, and the waste straw is discharged backward from the culm opening 7.

The wrapping prevention body 13 rotates at a speed significantly higher than the conveyance speed of grain culms to prevent straw waste from entering the handling barrel 1, and rotates a portion corresponding to the discharge culm opening 7. In this process, the straw waste hanging down from the lower edge is scooped up from below and thrown upwards by centrifugal force, and it is discharged to the outside together with the straw passing through, and the straw waste is collected at the end of the cob side of the culm opening 7. Although the straw shavings tend to get caught and form a lump, they are removed by the anti-wrapping body 13, and no braking action is applied to the handling cylinder 1.

Further, when an overload is applied to the handling cylinder 1, the handling cylinder 1 swings obliquely with respect to the outlet side plate 3, and at that time, the wrapping prevention body 13 contacts the inner circumferential surface of the outlet side plate 3, but the discharge culm opening 7 It does not protrude above the lower edge of the culm and collide with the panicle side end 7a of the culm opening 7.

Furthermore, the handling teeth 1a... have two flanges 18, 18 spaced apart as shown in FIG. A reporting hole 19 is drilled in the rear direction that is continuous with the small diameter circle through which the handling tooth 1a passes, and when installing, insert the lower flanges 18, 18 into the large diameter part and then insert the small diameter part in the rear. c, in the same figure from the front side in the rotational direction.
A tapered plate 21 having the engagement groove 20 shown in d is driven in.

Next, when reaping and threshing work is performed with a combine harvester, when the wet grain culm is threshed, the receiving net 8 becomes clogged, and a large amount of straw waste gets caught around the dust outlet 28 provided at the end of the receiving net 8. The device for removing these will be explained with reference to FIGS. 5 to 7. Long holes 23 in the shape of an arc are bored in the back and lower sides of the net receiving frame 22, respectively, and the long holes 23 in the back side The brush roll 26... is attached to the rotating shaft 25 inserted through the... and is brought into pressure contact with the receiving net 8, and both ends of the rotating shaft 25 are rotatably connected to the connecting rod 31 with links 30, 30, and the A sponge roll 32 whose side surface is in sliding or pressure contact with the side edge of the dust inlet 28 is rotatably supported on the link 30 so as to be driven via gears 33, 33, and a boss is inserted into the elongated hole 35 of the upper cover 34. 40
The lower end of the operating rod 36, which is inserted through the lever so as to be vertically and horizontally movable, is rotatably connected to the connecting rod 31, and the lower boss 37, which is vertically movable, can be rotated around the rotating shaft 25 by a link 38. It is connected to.

Further, a spring 42 is interposed between the boss 40 and the upper end seat 41 to bias it upward.

Further, the rotating shaft 25 of the lower brush roll 26 is connected via a swing arm 45 to the front end of an operating rod 44 whose gripping portion side is supported by a bearing 43 so as to be movable forward and backward.

When the receiving net 8 becomes clogged after threshing wet grain culms, pushing and pulling the operating rod 36 or 44 will cause
Since the rotating shaft 25 moves in an arc shape while being guided by the elongated holes 23, the brush roll 26 is pulled and rotated while being stuck in the receiving net 8.
The straw debris stuck in the tank will be removed.

In addition, the sponge roll 32 is a brush roll 26.
The gears 33, 3 rotate as the rotating shaft 25 rotates.
Rotationally driven via 3.

Remove straw debris caught on the side edge of the dust inlet 28.

FIG. 8 shows another example of the clogging removing device, in which 46 is a cylinder cover that can be opened and closed around a fulcrum shaft 47, and a boss 37 is connected to and disengaged from the fulcrum shaft 47 side. A hook 48 is fixed thereto, and the other structure is the same as that of the clogging prevention device described above.

During the threshing operation, the cylinder cover 4 is
6 is closed and fixed, the hook 48 engages with the boss 37 as shown by the solid line and the brush roll 2 is fixed.
6 etc. are locked in the raised position shown in the figure, but when performing maintenance inspection, open the cylinder cover 46 and open the handling cylinder 1.
When the operating rod 36 or 44 is pushed or pulled while the handle is rotated, the brush roll 26 and the sponge roll 32 push out straw waste, which is thrown out from the upper opening by the rotation of the handling cylinder 1.

After the maintenance and inspection work is completed, remove the brush roll 26.
The operating rod 36 and the like are pushed up by a spring 42 and locked when the cylinder cover 46 is closed, and the operating rod 44 is pushed in and locked as appropriate.

(g) Effects of the invention The present invention provides a threshing machine in which a wrapping preventive body 13 is provided on the outer circumferential surface of the handling barrel 1 on the culm opening side toward the culm opening 7, as described above. The tip of the outlet side plate 3 is brought close to the inner circumferential surface of the outlet culm opening 7.
Since the lower edge of the wrapping prevention body 13 is raised so that the tip of the wrapping prevention body 13 is substantially in contact with the inner circumferential surface of the outlet side plate 3, the wrapping prevention body 13 rotates at high speed together with the handling cylinder 1 during threshing, and the culm opening 7 In the process of rotating the corresponding part, the straw waste that hangs down on the lower edge is caught from below and thrown off by centrifugal force, and it is carried out together with the waste straw that is being discharged. can be prevented from wrapping around the handling barrel shaft 4.

Furthermore, when the handling cylinder 1 swings due to overload, the anti-wrapping body 13 may come into contact with the outlet side plate 3, but it will not collide with the panicle side end 7a of the culm opening 7, causing damage. It is possible to prevent this from happening.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is an exploded perspective view of the threshing section, Figure 2 is a vertical sectional view of the same as above, Figure 3 is a rear view of the same as above, Figure 4 a is an exploded perspective view of the handling tooth, b is a sectional view of the handling tooth attachment part, c is a plan view of the handling tooth fixing device and the attachment device, d is a side view of the handling tooth fixing device, FIG. 5 is a cross-sectional view of a threshing machine equipped with a receiving mesh clogging release device, and FIG. 6 is a clogging removal device FIG. 7 is a sectional view of a part of the same, and FIG. 8 is a sectional view of another example. 1... Handling cylinder, 3... Exit side plate, 5... Handling room, 7
...Culm opening, 13...Anti-wrapping body.

Claims (1)

[Scope of utility model registration request] In a threshing machine in which a wrapping prevention body 13 is provided on the outer circumferential surface of the handling barrel 1 on the discharge culm side, protruding toward the discharge culm opening 7, the tip of the wrapping prevention body 13 is brought close to the inner circumferential surface of the outlet side plate 3. A wrapping prevention device for a threshing machine characterized in that the lower edge of the discharge culm opening 7 is raised so that the tip of the wrapping prevention body 13 comes into approximate contact with the inner circumferential surface of the outlet side plate 3.