JPH10178865A - Pre-processor for combine cutting part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a rake-up case provided with the tine of a vertical rotation type provided on the front side of a raising case from being deformed by the application of unreasonable pressure. SOLUTION: In the one for performing the elevating and lowering control of a multi-line cutting part by a ground pressure sensor S, the lower part side of the raising case 1 is fixed to a cutting frame 5 and the lower end part of the rake-up case 2 is attached to a supporting member 7 extended forward from the cutting frame 5. In this case, it is preferable to make the lower end part of the rake-up case 2 freely attachable and detachable to/from the supporting member 7. Also, it is preferable that the sensor arm of the ground pressure sensor S is used together by a grass division frame 10, a sled body 9 provided on the grass division frame 10 is positioned in front of other grass division plates, the grass division frame 10 is provided at least on one side and the grass division frame 10 is provided with a lowering limiting device 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a raising case having a horizontal turning type tine and a scraping case having a vertical turning type tine in front of a threshing unit mounted on a traveling machine base. The present invention relates to a pre-processing device for a combine harvester, in which a mowing section of a multi-row mower having a pre-processing device is lifted and lowered by a lifting device, and the lifting is controlled via a lifting device by detecting a ground pressure sensor. is there.

[0002]

2. Description of the Related Art Conventionally, when there is unevenness in a field scene, the foreground plant at the foremost part of the cutting part rushes into the concave part or the convex part, picks up the soil, and conveys it backward to cause damage to the cutting blade or clogging. So that this does not happen,
A mowing unit provided with a pretreatment device having a raising case having a horizontal type tine in front of the threshing unit, a mowing unit capable of moving up and down by an elevating device, and controlling the elevating by detecting a ground pressure sensor. Is being developed.

[0003]

However, in the pretreatment device of the above-mentioned development, a scraping case having a vertical turning type tine is provided along the front side of a raising case having a horizontal turning type tine.
When a scaffold is attached, the structure can be simplified if the lower end of the case is connected and fixed to a weeding frame that also serves as the sensor arm of the ground pressure sensor. In such a case, there arises a problem that an excessive pressure is exerted on the scraping case under the influence of the upward movement of the weeding frame and the case is deformed.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention provides a raising case having a horizontal turning type tine and a raising case having a vertical turning type tine in front of a threshing unit mounted on a traveling machine base. The mowing part of the multi-row mower provided with a pretreatment device comprising a pre-processing device is made up and down by an elevating device, and the elevating and lowering is controlled via an elevating device by detection of a ground pressure sensor. The lower part of the case is fixed by a connecting member fixed to the mowing frame, and the lower end of the raking case is attached to a support member extending forward from the mowing frame. The weeding frame moves up independently and the scraping case is not affected and does not deform.

Further, if the lower end of the case is made detachable from the support member, the case can be immediately removed and converted to a normal pre-processing device for work.

[0006] The sensor arm of the ground pressure sensor is also used by a weeding frame having a weeding body and a sled body at the front end, and the sled body is positioned forward of other weeding boards. If it is positioned, the other weeding boards will move up with a margin and will not be pushed into the concave or convex parts at all.

In addition, if a weeding frame serving also as a sensor arm of the ground pressure sensor is provided on at least one of the two sides, a weeding frame serving also as this sensor arm is provided.
This makes it easy to remove straw culms and the like that get caught in the soil.

Further, by providing the grass weeding frame with a descent restricting device, the grass weed body is prevented from sneaking into the soil because it does not turn excessively downward.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a pretreatment device for a cutting section according to the present invention. FIG. 1 is a perspective view showing a combination of a threshing section and a grain tank for storing grains from a threshing section. A control section is provided in front of the grain tank, and a mowing section (A) is provided from the front of the threshing section to the front of the control section, and a straw processing section is provided behind the threshing section. The mowing part (A) is composed of four raising cases (1) having horizontal tines (1a) arranged side by side in the horizontal direction, and the front side of the raising case (1). This is a multi-row mower having three scraping cases (2) each having a vertical turning type tine (2a).

[0010] Further, (13) is a cutting blade, (14) is a transport mechanism for feeding the harvested grain culm back to the threshing section, and the cutting section (A)
The whole can be raised and lowered by a lifting device (4) with the axis (P) as a fulcrum.

Next, as for the ground pressure sensor (S), a mounting plate (15) is welded to the side surface of the front end portion of the cutting frame (5), and a holder is mounted on the mounting plate (15).
The hitch spring holder (17) is fixed via the stay (16). The hitch spring holder (17) is formed in a U-shape in a side view, and a partition plate (18)
The partition plate (18) and the hitch spring holder ((1)
A sliding rod (19) is slidably inserted in the front plate (17a) of (7) slidably in the front-rear direction, and a compression spring (20) is fitted on the sliding rod (19) to fit the rod (19). ) Is urged forward, but the sliding rod (19) is provided with a locking ring (21) to restrict the sliding within a set range.

A switch (22) which is turned on by sliding the sliding rod (19) backward is provided on the rear plate (17b) of the hitch spring holder (17). The device (4) is connected via a control circuit, and when the switch (22) is turned on, the entire cutting unit (A) automatically moves upward.

At the front end of the cutting frame (5), a connecting plate (23) protruding upward, and then a connecting member (6) directed inward and a holding rod (25) of a side divider (24). Are welded, the base is formed in a box shape on the lower surface of the connecting plate (23), the base of the support member (7) extending forward is joined to the upper surface thereof, and tightened with several bolts (26). And are integrated.

A rotation shaft (27) is laid horizontally on the base of the support member (7) in the left and right direction. The rotation shaft (27) is formed in an L-shape to form a ground pressure sensor. The upper end of the weeding frame (10) which also serves as the sensor arm of (S) is welded, and the lower end of the operating arm (28) is fixed to the right end of the rotating shaft (27). Operating arm (2)
At the upper end of 8), a contact portion (28a) for contacting the front end of the sliding rod (19) is formed, and the weeding frame (10) is supported on the rotation shaft (27). By turning upward, the sliding rod (19) is slid backward and the switch (22) is turned on.

A regulating plate (29) is provided to project forward from the upper end of the weeding frame (10), and the base of the support member (7) is opened to the upper plate (7a). The stopper bolt (31) is inserted from above through the hole (30), and the lower end of the stopper bolt (31) is connected to the fastening nut (3).
2) A descent restricting device (12) is provided which is fixed by (32) and screwed with lock nuts (33) (33) to restrict the downward rotation of the weeding frame (10). I have.

The lowering device (12) is provided with stopper bolts (3) by adjusting lock nuts (33) and (33).
By adjusting the distance between the head and the lock nut (33) in 1), the rotation range of the weeding frame (10) is regulated,
In addition, the lowering limit of the weeding frame (10) is adjusted by adjusting the fastening nuts (32) (32) up and down.

A sled body (9) is welded to the front end of the weeding frame (10), and a weed body (8) is attached so as to cover the sled body (9). (9) The weeding frame (10) is moved upward with the pivot (27) as a fulcrum by the contact pressure of (9), so that the switch is moved through the operating arm (28) and the sliding rod (19). (22) ON
Then, the mowing part (A) is moved upward by the lifting device (4).

Then, the connecting member (6) raises the cable.
The lower part of the case (1) is connected and fixed to the waist, and the lower part of the case (2) is connected to the reinforcing plate (34) attached to the case (2) by tightening bolts (35) (35). It is detachable and fixed to the front side of the support member (7) to raise the weeding frame (10) so that it can move up and down independently irrespective of the case (1) and the scraping case (2). It is.

The weeding frame (10), which also serves as the sensor arm of the ground pressure sensor (S), is provided on the right side of the cutting unit (A) in the example shown in FIG. 7 may be provided on one of the two sides, and the sled body (9) welded to the front end of the weeding frame (10) is indicated by a front-rear difference (L) in FIG. So that it is located forward of the other weeding boards (11).

[0020]

The present invention has been implemented as described above, and has the following effects.

That is, in front of the threshing unit mounted on the traveling machine base, there is provided a pre-processing device comprising a raising case having a horizontal turning tine and a scraping case having a vertical turning tine. The mowing section of the multi-row mower can be raised and lowered by the lifting device,
The raising and lowering is controlled via a lifting device by detection of a ground pressure sensor. The lower part of the raising case is fixed by a connecting member fixed to the cutting frame, and the lifting case is fixed.
The lower end portion of the grass is attached to a support member extending forward from the mowing frame, so that the weeding frame that also serves as the sensor arm of the ground pressure sensor is used alone. As the case moves upward, the case is not affected and is not deformed, and the upward movement of the weeding frame can be performed smoothly.

If the lower end of the case is made detachable from the supporting member, the case can be immediately removed and converted into a normal pre-processing device for convenient operation.

The sensor arm of the ground pressure sensor is also used by a weeding frame having a weeding body and a sledging body at the front end, and the sledging body is provided in front of other weeding boards. When it is positioned, the other weeding boards move up with a margin and do not enter into the concave or convex parts at all.

Furthermore, if a weeding frame that also serves as the sensor arm of the ground pressure sensor is provided on at least one of the two sides, the weeding frame that also serves as the sensor arm is provided.
This makes it easy to remove straw culms and the like that get caught in the soil.

Further, by providing the weeding frame with a descent restricting device, it is possible to prevent the weeding body from digging into the soil because the weeding body does not excessively turn downward.

[Brief description of the drawings]

FIG. 1 is a side view of a main part showing a front part of a reaper.

FIG. 2 is a plan view of a main part of the front part.

FIG. 3 is an extraction side view of a front portion of a cutting frame.

FIG. 4 is a plan view of the same.

FIG. 5 is an extraction side view of the support member.

FIG. 6 is a plan view of the same.

FIG. 7 is a plan view of a front part of a cutting unit.

FIG. 8 is a side view showing the reaper.

[Explanation of symbols]

 Reference Signs List A Cutting unit S Ground pressure sensor 1 Raising case 1a Tine 2 Raising case 2a Tine 3 Pretreatment device 4 Elevating device 5 Cutting frame 6 Connecting member 7 Supporting member 8 Weeding body 9 Sled body 10 minutes Grass frame 11 Grass plate 12 Lowering limiter

Claims (5)

[Claims] 1. A raising case (1) having a horizontal turning tine (1a) and a scraping case having a vertical turning tine (2a) in front of a threshing section mounted on a traveling machine base. A multi-cutting mowing part (A) provided with a pre-processing device (3) comprising a pre-processing device (2) can be moved up and down by an elevating device (4). Equipment (4)
And a connecting member (6) for fixing the lower part of the raising case (1) to the cutting frame (5).
And the lower end of the scraping case (2)
A pretreatment device for a combine harvester, wherein the pretreatment device is configured to be attached to a support member (7) extending forward from a room (5). 2. A scraping case (2) having a lower end portion detachably attached to a support member (7). A pretreatment device for a combine harvester according to the above description. 3. A weeding frame (10) having a weeding body (8) and a sledging body (9) at the front end of the sensor arm of the ground pressure sensor (S). The sled body (9) is located ahead of the other weeding boards (11). A pretreatment device for a combine harvester according to the above description. 4. A weeding frame (10) serving also as a sensor arm of the ground pressure sensor (S) is provided on at least one of both sides. A pretreatment device for a combine harvester according to the above description. 5. The weeding frame (10) is provided with a descent restricting device (12). A pretreatment device for a combine harvester according to the above description.