JP3851882B2 - Mowing harvester - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a harvesting and harvesting machine that harvests and harvests crops in a field, such as a combine or rice harvester for rice, wheat, and soybeans.
[0002]
[Prior art]
In the harvesting and harvesting machine, for example, as disclosed in Patent Document 1, a height sensor (10a in FIGS. 1, 2 and 3 of Patent Document 1) detects the height of the harvested part with respect to the field by contacting the field. , 10b) is provided in the cutting unit, and the cutting unit is automatically driven up and down based on the detection value of the height sensor so that the cutting unit is located at a set height from the field.
[0003]
In the structure of Patent Document 1, a position sensor (26 in FIG. 2 and FIG. 11 of Patent Document 1) that detects the lateral position of the harvesting unit with respect to the crop in the field by contacting the crop in the field is used as the harvesting unit. The orientation of the aircraft is automatically corrected based on the detection value of the position sensor so that the aircraft advances along the crops in the field.
As a result, the cutting part is maintained at the set height from the field regardless of the unevenness of the field, and even if the row of crops in the field is disturbed, the aircraft advances along the row of crops in the field regardless of this. The crops in the field are cut and harvested stably at a set height from the field.
[0004]
[Patent Document 1]
JP-A-58-121712 (Figs. 1, 2, 3, and 11)
[0005]
[Problems to be solved by the invention]
According to the structure of Patent Document 1, a height sensor is provided at the right end of the cutting part, a position sensor is provided at the left and right center front part of the cutting part, and wiring from the height sensor and wiring from the position sensor are provided. It is attached to a separate part of the cutting part. This simplifies the mounting structure of the height sensor and the position sensor to the cutting part, facilitates the mounting work to the cutting part, and the structure for mounting the wiring from the height sensor and the wiring from the position sensor to the cutting part. There is room for improvement in terms of simplification and ease of attachment to the cutting part.
[0006]
In the harvesting and harvesting machine according to the present invention, when the height sensor and the position sensor are provided in the harvesting unit, the height sensor and the position sensor can be simply attached to the harvesting unit, the attachment work to the harvesting unit is facilitated, and the height is increased. The object is to simplify the mounting structure of the wiring from the sensor and the wiring from the position sensor to the cutting portion and to facilitate the mounting work to the cutting portion.
[0007]
[Means for Solving the Problems]
In the invention according to claim 1 of the present invention, the support frame provided at the front end portion of the cutting portion is bent so as to have an inverted U shape in a side view, and the space obtained by the bending formation is the height sensor for detecting the height of the cutting portion to the field by touching the field, and a position sensor for detecting the lateral position of the reaper for field crops by contacting the field crops, their The detector is arranged so as to enter, the divider is placed on the support frame, the front part is located in front of the support frame, and the rear part is located above the inverted U-shaped part of the support frame. A harvesting and harvesting machine equipped with a tilting posture .
[0008]
According to the invention described in claim 1, since the height sensor and the position sensor are provided at the same position of the cutting part, compared with the case where the height sensor and the position sensor are attached to separate parts of the cutting part, The height sensor and the position sensor can be attached to the cutting unit with a small number of attachment members.
If the height sensor and the position sensor can be attached to the cutting portion with a small number of attachment members as described above, the height sensor and the position sensor can be easily attached to the cutting portion.
[0009]
In addition, if the height sensor and the position sensor are provided at the same position on the cutting unit, the wiring from the height sensor and the wiring from the position sensor can be combined and attached to the cutting unit. Compared with the case where the height sensor and the position sensor are attached to separate parts of the cutting part, it is possible to attach the wiring from the height sensor and the wiring from the position sensor to the cutting part with a small number of attachment members.
If it becomes possible to attach the wiring from the height sensor and the wiring from the position sensor to the cutting part with a small number of mounting members as described above, the wiring from the height sensor and the wiring from the position sensor to the cutting part are attached. You will be able to work easily.
[0010]
In the invention according to claim 2 of the present invention, the height sensor and the position sensor are integrally supported around the front and rear axis of the cutting part so as to be freely rollable .
[0011]
According to the second aspect of the present invention, even if the cutting part moves in the lateral direction with respect to the field and the height sensor is forced to bend in the lateral direction, the height By rolling the sensor and the position sensor around the longitudinal axis of the cutting part, a state in which the height sensor is forcibly bent in the lateral direction is absorbed.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1, a cutting part 2 is provided on the left part of the front part of the airframe supported by the crawler type right and left traveling devices 1, and a driving part 3 is provided on the right part of the front part of the airframe. A threshing device 4 is provided on the left side of the rear part, and a grain tank 5 is provided on the right part of the rear part of the machine body to constitute a combine for rice that is an example of a harvesting and harvesting machine. As a result, the grain straw A (see FIG. 2) in the field G is cut by the reaping unit 2, threshed by the threshing device 4, and the grain recovered by the threshing device 4 is supplied to the glen tank 5.
[0013]
As shown in FIG. 1 and FIG. 2, four dividers 6 that enter between rows of the culm A of the field G, the raising device 7 that causes the culm A of the field G, and the stock of the culm A of the field G The clipper type cutting device 8 that cuts the choppings and the transfer device 9 that transfers the harvested cereal husk A to the threshing device 4 are provided, and the cutting unit 2 is configured. A single-acting hydraulic cylinder 10 that drives the mowing unit 2 up and down is provided with a mowing unit 2 supported up and down around the horizontal axis P1 at the front of the machine body.
[0014]
As shown in FIG. 2, a hydraulically operated right and left side clutch 11 capable of transmitting and interrupting power to the right and left traveling devices 1 is provided in a mission case 12, and the right and left side clutches are provided. 11 and a control device 14 for operating the control valve 13 are provided. As a result, when the right and left side clutches 11 are operated to the transmission side, the aircraft moves straight (forward or backward), and when the right (left) side clutch 11 is operated to the disengagement side, the aircraft gently moves to the right. Change direction to (left). A control valve 15 is provided for operating the hydraulic cylinder 10 by supplying and discharging hydraulic oil to and from the hydraulic cylinder 10, and the control valve 15 is operated by the control device 14 as described later.
[0015]
As shown in FIGS. 1 and 2, four support frames 16 and 17 are extended forward from the lower portion of the cutting part 2, and the divider 6 is supported at the front ends of the support frames 16 and 17. . As shown in FIGS. 3 and 4, an inverted U-shaped support frame 18 is fixed to the front end of the support frame 17 on the center side, and the divider 6 is supported on the front end of the support frame 18. A boss portion 19 is fixed to the front portion, and a bracket 20 is fixed to the rear portion of the support frame 18. A support member 21 configured by bending a plate material into a U-shape in plan view is provided, and a support shaft 21 a fixed to the front portion of the support member 21 is rotatably supported by the boss portion 19. The support shaft 21 b fixed to the bracket 20 is rotatably supported by the bracket 20, and the support member 21 is supported so as to be able to roll around the front and rear axis P <b> 2 of the cutting part 2.
[0016]
As shown in FIGS. 3 and 4, the pin 18 a is fixed to the front portion of the support frame 18, the pin 21 c is fixed to the front portion of the support member 21, and the winding spring 30 that hangs on the support shaft 21 a of the support member 21. The ends of the helical spring 30 are hung on the support frame 18 and the pins 18 a and 21 c of the support member 21. Thereby, in a front view of the cutting unit 2, a reference posture in which a ground arm 23 described later faces downward perpendicular to the cutting unit 2 (a reference posture in which a contact arm 28 described later faces sideways parallel to the cutting unit 2) ), The support member 21 is biased by the helical spring 30.
[0017]
As shown in FIGS. 3 and 4, the case 22 is fixed to the support member 21, and a grounding arm 23 made of a leaf spring is supported so as to swing up and down around the horizontal axis P <b> 3 of the case 22. A rear portion of the ground arm 23 is inserted into a U-shaped receiving member 26 fixed to the member 17. A potentiometer 24 is fixed to the case 22 as a detector , and an angle (position) of the ground arm 23 with respect to the case 22 is transmitted to the potentiometer 24 by a gear mechanism (not shown) provided inside the case 22. It is configured. Thus, the height sensor 25 is configured by the case 22, the ground arm 23, and the potentiometer 24.
[0018]
As shown in FIG. 3, in the height sensor 25, when the grounding arm 23 contacts the field G and the cutting unit 2 moves up and down with respect to the field G, the grounding arm 23 is elastically deformed and the horizontal axis of the case 22 is It swings up and down around P3, and by detecting the angle (position) of the ground arm 23 with respect to the case 22 by the potentiometer 24, the height of the cutting unit 2 with respect to the field G can be detected.
[0019]
As shown in FIGS. 3 and 4, two limit switches 27 are fixed to the support member 21 in the front-rear direction as a detection unit, and the contact arm 28 is swingable around the vertical axis P <b> 4 above the limit switch 27. It is supported by. The front contact arm 28 extends obliquely to the right and rearward, and the rear contact arm 28 extends obliquely rearward to the left and in the state of not contacting the crop A in the field G, and is moved forward and backward by a spring (not shown). The rear contact arm 28 is urged forward, and the front and rear contact arms 28 are stopped in the state shown in FIG. 4 by a stopper (not shown). In the state shown in FIG. 4, the front (rear) limit switch 27 is in an OFF state, and when the front (rear) contact arm 28 contacts the culm A of the field G and swings backward by a predetermined angle, The front (rear) limit switch 27 is turned on. Thus, the front and rear position sensors 29 are configured by the front (rear) limit switch 27 and the front (rear) contact arm 28.
[0020]
As shown in FIGS. 3 and 4, the height sensor 25 and the front and rear position sensors 29 are integrally configured by the support member 21 and are supported by the cutting unit 2 as described above. . The height sensor 25, the front and rear position sensors 29, and the support member 21 are integrally rolled around the front and rear axis P <b> 2 of the cutting unit 2, and the cutting spring 2 is viewed from the front by the helical spring 30. Thus, the grounding arm 23 is biased to a reference posture (a reference posture in which the contact arm 28 faces in a laterally outward direction parallel to the cutting unit 2) and is directed downward perpendicular to the cutting unit 2. The wiring from the height sensor 25 (not shown) and the wiring from the front and rear position sensors 29 (not shown) are combined into one and connected to the control device 14 through the support frame 17. ing.
[0021]
The control device 14 is provided with a lift control means (not shown) and a steering control means (not shown). Thereby, based on the detected value of the height sensor 25 (the angle (position) of the ground arm 23 with respect to the case 22), the control device 14 controls the control valve so that the cutting unit 2 is maintained at the set height from the field G. 15 is operated, the hydraulic cylinder 10 expands and contracts, and the cutting unit 2 is automatically driven up and down (lift control means). Based on the signals from the front and rear position sensors 29, the front and rear position sensors 29 are turned on (the front and rear contact arms 28 are in contact with the cereal A of the field G and are moved backward by a predetermined angle. The control valve 13 is operated by the control device 14, the right and left side clutches 11 are operated to the transmission side and the shut-off side, and the airframe is automatically moved along the grain ridge A of the field G. Progress (steering control means).
[0022]
[First Alternative Embodiment of the Invention]
Instead of the structure shown in FIGS. 3 and 4 of the above-mentioned [Embodiment of the invention], as shown in FIG. 5, it is positioned above the height sensor 25 (case 22, ground arm 23 and potentiometer 24). In addition, the front and rear position sensors 29 (limit switch 27 and contact arm 28) may be configured to be attached to the support member 21.
[0023]
[Second Embodiment of the Invention]
In the above-described [Embodiment of the invention] and [First another embodiment of the invention], the limit switch 27 is provided inside the case 22 so that the contact arm 28 extends diagonally rearward to the right and left from the case 22. You may comprise.
[0024]
[Third Another Embodiment of the Invention]
In the above-mentioned [Embodiment of the invention], [First alternative embodiment of the invention], and [Second alternative embodiment of the invention], the front and rear limit switches 27 are eliminated, and one potentiometer (FIG. The position sensor 29 may be configured by extending one contact arm (not shown) obliquely rearward from the potentiometer. When comprised in this way, when a contact arm contacts the grain candy A of the field G and rock | fluctuates back, the harvesting part with respect to the grain candy A of the field G is detected by detecting the angle to the back of a contact arm with a potentiometer. 2 is detected in the horizontal direction.
The present invention can be applied not only to the combine for rice, but also to the combine for wheat and soybean, the grass harvester and the like.
[0025]
【The invention's effect】
According to the features of claim 1, it is possible to attach the height sensor and the position sensor reaper by not less mounting member, the reaper wiring from the wiring and the position sensor from the height sensor with fewer mounting member It becomes possible to attach, simplify the mounting structure of the height sensor and position sensor to the cutting part, simplify the wiring structure from the height sensor and wiring from the position sensor to the cutting part. I was able to.
[0026]
According to the feature of the first aspect, the height sensor and the position sensor can be easily attached to the cutting portion as described above, and the wiring from the height sensor and the wiring from the position sensor to the cutting portion can be attached. The work can be performed easily, and the installation work of the height sensor and the position sensor to the cutting part is facilitated, and the wiring from the height sensor and the wiring from the position sensor to the cutting part are facilitated. I was able to.
[0027]
According to a feature of the 請 Motomeko 2, in the state that the reaper is moved laterally with respect to the field, even in the state as height sensor is forcibly bent in the lateral direction, a height sensor And by rolling the position sensor around the front and rear axis of the cutting part, it becomes possible to absorb the situation where the height sensor is bent forcibly in the lateral direction and reduce the damage of the height sensor. I was able to.
[Brief description of the drawings]
[Fig. 1] Side view of the front half of the combine [Fig. 2] Schematic plan view of the cutting part, the transmission case and the traveling device [Fig. 3] Side view of the height sensor and the position sensor [Fig. 4] Height FIG. 5 is a side view of the vicinity of the height sensor and the position sensor according to the first embodiment of the present invention.
2 Cutting part
6 dividers
18 support frame
24 detector
27 detector 25 height sensor 29 position sensor G field A crop P2 longitudinal axis

Claims (2)

The support frame provided at the front end portion of the cutting part is bent to form an inverted U shape in a side view,
A height sensor that detects the height of the cutting part with respect to the field by contacting the field, and a lateral direction of the cutting part with respect to the crop in the field by contacting the crop in the field, in the space obtained by the bending formation. A position sensor that detects the position is deployed so that those detection units can enter,
A trimming device in which a divider is mounted on the support frame in a rearward rising posture in which a front portion thereof is located in front of the support frame and a rear portion thereof is located above an inverted U-shaped portion of the support frame. Harvester.   2. The harvesting and harvesting machine according to claim 1, wherein the height sensor and the position sensor are integrally and freely supported around the front and rear axis of the harvesting unit.

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