JP3791993B2 - Pre-processing device for combine harvester - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a multi-row mowing provided with a pretreatment device including a raising case having a horizontal turning type tine and a scraping case having a vertical turning type tine in front of a threshing portion mounted on a traveling machine base. The present invention relates to a pre-processing device for a combine harvester that enables a mowing unit to be moved up and down by an elevating device, and that elevating is controlled through the elevating device by detection of a ground pressure sensor.
[0002]
[Prior art]
Conventionally, if there are irregularities in the farm scene, the weeding body at the forefront of the cutting part will thrust into the concave or convex part, pick up the soil and transport it backwards, causing damage to the cutting blade or causing clogging. In order to prevent this from happening, the mowing unit is provided with a pre-treatment device having a raising case having a horizontal tine in front of the threshing unit, and the lifting device can be moved up and down by the lifting device. Controls based on detection have been developed.
[0003]
[Problems to be solved by the invention]
However, when a scraping case having a vertical turning type tine is attached along the front side of a raising case having a horizontal turning type tine to the pretreatment apparatus of the above development, the lower end portion of the raising case is attached. If it is connected and fixed to the weed frame, if you try to use this weed frame as a sensor arm for the ground pressure sensor, it will be affected by the upward movement of the weed frame , and it will be deformed by applying excessive pressure to the scraping case. This problem occurs.
[0004]
[Means for Solving the Problems]
Accordingly, the present invention provides a pretreatment comprising a plurality of raising cases having a laterally-turned tine and a plurality of scraping cases having a vertically-turned tine in front of a threshing portion mounted on the traveling machine base. In the pretreatment device of the combine cutting unit, the cutting unit of the multi-row mowing provided with the device is installed so as to be able to be moved up and down from the lifting device, and the lifting and lowering of the cutting unit is controlled through the lifting device by detection of the ground pressure sensor. The lower end portion of the scraping case and the lower side of the raising case are attached to a support member extending forward from the cutting frame of the cutting portion, and the supporting member located on either the left or right side of the cutting portion is A weeding frame that also serves as a sensor arm for the ground pressure sensor is provided with a descent restriction device that regulates the lifting range, and the sled body provided on the weeding frame is positioned in front of the other weeding plates. Food Yes, the upward movement to scrape case minute grass frame alone is no longer also be modified without being affected.
[0005]
The sensor arm of the ground pressure sensor is combined with a weed frame that has a weed body and a sled body at the front end, and the sled body is positioned in front of the other weed boards. Therefore, the weed plate moves up with a margin and does not thrust into the concave portion or the convex portion.
Also, by providing a weeding frame that also serves as the sensor arm of the ground pressure sensor on either the left or right side of the cutting part, the weeding frame that also serves as this sensor arm is caught. It is possible to easily remove the soot and the like, and further, by providing a descending restriction device on the weed frame, it is possible to prevent the weed body from being pushed into the soil because it does not turn downward.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
【Example】
Hereinafter, the pretreatment device for a cutting part according to the present invention will be described with reference to the accompanying drawings. First, this combiner is provided with a grain tank that stores grains from the threshing part and the threshing part in parallel on the traveling machine stand. In addition, the control unit is disposed on the front side of the grain tank, the cutting unit (A) is provided from the front of the threshing unit to the front of the control unit, and the rear crocheting unit is connected to the waste processing unit. In the cutting part (A), four raising cases (1) having horizontal turning type tines (1a) are arranged in the left-right direction, and the vertical turning type tines (2a) are arranged on the front side of the raising case (1). ) Is a multi-saw cut with three scraping cases (2).
[0007]
Further, (13) is a cutting blade, and (14) is a transport mechanism for feeding the harvested cereal meal to the threshing unit, and the entire harvesting unit (A) is lifted and lowered by the lifting device (4) with the shaft (P) as a fulcrum. It is possible.
[0008]
Next, the ground pressure sensor (S) will be described. A mounting plate (15) is welded to the side surface of the front end portion of the cutting frame (5), and the hitch is mounted on the mounting plate (15) via a holder stay (16). A spring holder (17) is fixed. The hitch spring holder (17) is formed in a U-shape when viewed from the side. A partition plate (18) is erected in the middle of the hitch spring holder (17), and the front plate of the hitch spring holder (17) ( 17a), a sliding rod (19) is slidably inserted in the front-rear direction, and a compression spring (20) is externally fitted to the sliding rod (19) to urge the rod (19) forward. However, the sliding rod (19) is provided with a locking ring (21) and is regulated to slide within a set range.
[0009]
The rear plate (17b) of the hitch spring holder (17) is provided with a switch (22) that is turned on by sliding the slide rod (19) rearward. The switch (22) and the lifting device (4) Are connected via a control circuit, and the entire cutting part (A) is automatically moved up by turning on the switch (22).
[0010]
Further, the front end of the cutting frame (5) is welded with the connecting plate (23) and the inwardly connecting member (6) and the holding rod (25) of the side divider (24), which protrude upward. A base part is formed in a box shape on the lower surface of the plate (23), and the base part of the support member (7) extending forward is joined to the upper surface of the plate, and is fastened by several bolts (26) to form an integral structure. is doing.
[0011]
Then, the base of the support member (7) has a rotating shaft (27) horizontally mounted in the lateral direction. The rotating shaft (27) is formed into an L shape and is connected to the ground pressure sensor (S). While welding the upper end part of the weeding frame (10) which also serves as a sensor arm, the lower end of the operating arm (28) is fixed to the right end part of the rotating shaft (27), and the operating arm (2
8) A contact portion (28a) that contacts the front end portion of the sliding rod (19) is formed at the upper end portion of the slide rod (19), and the weeding frame (10) has the rotation shaft (27) as a fulcrum. By rotating upward, the slide rod (19) is slid backward to turn on the switch (22).
[0012]
Further, a restriction plate (29) is projected forward from the upper end portion of the weeding frame (10), and a hole (30) in which the base portion of the support member (7) is formed in the upper plate (7a) of the hook. Through which the stopper bolt (31) is inserted from above, the lower end of the stopper bolt (31) is fixed by the fastening nuts (32) and (32), and the lock nuts (33) and (33) are screwed together to separate the weeds A lowering restricting device (12) for restricting the downward rotation of the frame (10) is provided.
[0013]
The lowering restricting device (12) adjusts the distance between the head of the stopper bolt (31) and the lock nut (33) by adjusting the lock nuts (33) and (33), thereby turning the weed frame (10). In addition, the lower limit of the weeding frame (10) is adjusted by the vertical adjustment of the fastening nuts (32) (32).
[0014]
A sled body (9) is welded to the front end of the weed frame (10), and a weed body (8) is attached so as to cover the sled body (9), so that the ground of the sled body (9) is grounded. When the weeding frame (10) is moved upward with the rotation shaft (27) as a fulcrum by the pressure, the switch (22) is turned on via the operating arm (28) and the sliding rod (19). The cutting part (A) is moved up by (4).
[0015]
Then, the lower part of the case (1) is connected and fixed to the connecting member (6), and the lower part of the scraping case (2) is a fastening bolt (34) attached to the case (2). (35) Removably attachable by (35) and fixed to the front side of the support member (7) to raise the weeding frame (10) so that it can be raised and lowered independently regardless of the case (1) and the lifting case (2). It is.
[0016]
Further, the weeding frame (10) that also serves as the sensor arm of the ground pressure sensor (S) is provided on the right side of the cutting part (A) in the example shown in the figure, but may be provided on the left side. The sled body (9) welded to the front end of the weed frame (10) is provided on either one of the two sides, as shown by the front-rear difference (L) in FIG. Is also positioned forward.
[0017]
【The invention's effect】
The present invention is implemented as described above, and has the following effects.
[0018]
That is, a plurality of raising cases (1) having a horizontal turning type tine (1a) and a plurality of raising cases having a vertical turning type tine (2a) in front of the threshing portion mounted on the traveling machine base. A multi-cutting mowing part (A) provided with a pre-processing device (3) comprising (2) is installed so as to be able to be raised and lowered by an elevating device (4), and the raising and lowering of the mowing part (A) is measured by a ground pressure sensor. In the pretreatment device of the combine harvester controlled by the lifting device (4) based on the detection of (S), the lower end of the raising case (2) and the lower side of the raising case (1) are connected to the harvester ( A) is attached to a support member (7) extending forward from the cutting frame (5), and the grounding pressure sensor is connected to the support member (7) located on either the left or right side of the cutting part (A). The weeding frame (10) that also serves as the sensor arm of (S) 12) Since the raising / lowering range is regulated so as to be adjustable, and the sled body (9) provided on the weeding frame (10) is configured to be positioned in front of the other weeding plates (11), The weeding frame (10), which also functions as the sensor arm of the ground pressure sensor (S), moves up independently, and the scraping case (2) is not affected and is not deformed. The movement can also be made smoothly.
[0019]
The sensor arm of the ground pressure sensor (S) is also used by a weed frame (10) having a weed body and a sled body (9) at the front end, and the sled body (9) is used as another weed. By positioning it ahead of the plate (11), the other weeding plates (11) move up with a margin and do not push into the recesses or projections at all.
Also, by providing a weeding frame (10) that also serves as the sensor arm of the ground pressure sensor (S) on either the left or right side of the cutting part (A), the sensor arm can also be used. It is possible to easily remove wrinkles caught on the weeding frame (10), and the weeding frame (10) is provided with a lowering restricting device (12), so that the weeding body is directed downward further. Because it does not turn, you can prevent it from being pushed into the soil.
[Brief description of the drawings]
FIG. 1 is a side view of a main part showing a front part of a cutting part.
FIG. 2 is a plan view of the 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 a support member.
FIG. 6 is a plan view of the same.
FIG. 7 is a plan view of the front part of the cutting part.
FIG. 8 is a side view showing the cutting part.
[Explanation of symbols]
A cutting part S ground pressure sensor 1 pulling case 1a tine 2 scraping case 2a tine 3 pretreatment device 4 lifting device 5 cutting frame 7 support member 8 weed body 10 weed frame 12 descending restriction device

Claims (1)

In front of the threshing part mounted on the traveling machine stand, a plurality of raising cases (1) having a laterally turning tine (1a) and a plurality of scraping cases (2) having a vertically turning tine (2a) ) because made pretreatment unit (3) the reaper of multi-start cutting with the (a) is vertically movable and So設 by lifting device (4), the ground contact pressure sensor (S elevation of the reaper (a) In the pretreatment device of the combine harvester that is controlled via the lifting device (4) by the detection of the lift), the lower end of the scraping case (2) and the lower side of the raising case (1) are connected to the harvester (A). Are attached to a support member (7) extending forward from the cutting frame (5 ), and the ground pressure sensor (S) is connected to the support member (7) located on either the left or right side of the cutting part (A). ) The weeding frame (10) that also serves as the sensor arm of the lowering restriction device (12 Provided adjustably restrict the lifting range, the reaper Combine wherein the sled body provided correspondingly grass frame (10) and (9), it was positioned in front of the other partial grass plate (11) Part pre-processing equipment.

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