JP2866552B2 - Combine harvesting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cultivating a grain culm raising device, which is provided at a front part of a traveling machine body, on an uncut mower side of a grain culm raising device, at a position forward of the grain culm raising device. A compulsory weeding device that combs the culm into a culm to be cut and an uncut culm to be introduced into the culm raising device is provided, and the compulsory weeding device is installed before the harvesting. It is supported by an arm member that can be bent and oscillated by an actuator provided in the processing unit, and can freely move to the side of the aircraft by swinging around the longitudinal axis near the lower end of the forced weeding device On the forced weeding structure of the combine.

[0002]

2. Description of the Related Art Conventionally, in a forced weeding structure of this type of combine, for example, as proposed in Japanese Utility Model Application No. 4-80542 filed earlier by the present applicant, a forced weeding device is used. The arm member for supporting the fork is rocked by an actuator such as an electric motor, so that the forced weeding device is controlled so as to be able to freely move laterally and outwardly around the lower longitudinal axis of the machine body. Things are known.

[0003]

However, in the above-mentioned conventional structure, even if it collides with an obstacle such as a ridge,
Or, even if the uncut culm is dense and the forced weeding device is overloaded due to the contact with the uncut corn culm because it cannot be sufficiently combed with the forced weeding device, Since there was no mechanism to eliminate the overload condition, the overload could damage the locking claw for transporting and raising the grain culm provided in the endless swirl zone of the forced weeding device, or the forced weeding device itself could not be There is a possibility that the arm members and the actuators may be damaged by being pushed by the uncut culm or the like. The present invention has been made in view of the above circumstances, and even if an unreasonable external force is applied to the forced weeding device from an uncut culm or the like toward the side of the machine, the forced weeding device or the like is damaged. The purpose is to provide a forced weeding structure of the combine that can be avoided to avoid.

[0004]

Means for Solving the Problems The forced weeding structure of the combine according to the first invention is intended to achieve the above object.
In the aforesaid structure, a detection means for detecting a waist break state of the arm member is provided, and the waist angle of the arm member becomes equal to or larger than a predetermined angle due to retreat swing of the forced weeding device toward the body. On the basis of the detection result of the detection means, a forced storage means for driving the actuator and storing the forced weeding device in the body is provided. In order to achieve the above object, the combined weeding structure of the combine according to the second aspect of the present invention, in the above-mentioned combined structure, detects that an external force greater than a setting in a body storage direction is applied to the forced weeding device. A possible external force detection unit is provided, and a forced storage unit is provided for driving the actuator based on an external force detection result of the external force detection unit and storing the forced weeding device in the body. I do. The operation and effect of this characteristic configuration are as follows.

[0005]

According to the first aspect of the present invention, the detecting means for detecting the hip break state of the arm member is provided, and the waist angle of the arm member becomes greater than a predetermined angle due to the reciprocating swing of the forced weeding device toward the body. The forced weeding device is driven by the actuator based on the detection result by the detecting means, and the forced weeding device is stored in the body by the actuator. When the arm member is pushed to the waist and the arm member is bent to a predetermined posture or more, the degree of the hip break is detected by the detecting means, and the forced weeding device is folded so that no trouble occurs in the forced weeding device or the like. Will be automatically stored. According to the second invention, the forced weeding device is provided with external force detecting means capable of detecting that an external force greater than the setting in the body storing direction is applied, and based on the external force detection result by the external force detecting means. Since the forced storage means for driving the actuator and storing the forced weeding device in the body is provided, the forced weeding device is pushed toward the side by the uncut mushrooms, obstacles, etc., and the forced weeding is performed. When an external force greater than the set value is applied to the device, the external force is detected by the external force detecting means. Become.

[0006]

Therefore, according to the present invention, for example, the forced weeding device detects the rocking angle of the body that has swung by a predetermined amount or more due to the external force caused by, for example, contacting a ridge or the like. By detecting the external force applied to the grass device itself, based on the detection result, the forced weeding device is forcibly stored in the armpit, so that the forced weeding device and the like can be prevented from being damaged.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 5 shows a combine. In this combine, a threshing device 3, a control unit 4, a driving unit, and the like are mounted and installed on a traveling machine body 2 supported by a pair of left and right crawler traveling devices 1, 1, and a horizontal axis center is mounted on a front portion of the traveling machine body 2. A cutting pre-processing unit 5 is mounted so as to be able to move up and down and swing around P.

The pre-cutting section 5 includes a fixed divider 6 for weeding the planted cereal culm, a cereal culm raising device 7 for cultivating the cultivated cereal culm, and cutting the root of the raised cereal culm. It comprises a cutting device 8 for cutting and a vertical transfer device 10 for transferring the cut stalks to a threshing feed chain 9 of the threshing device 3. More specifically, the pre-cutting unit 5 is supported on the traveling machine 2 so as to be able to move up and down around the horizontal axis P, and extends forward to a support frame 11 which is also used as a transmission case for the pre-cutting unit 5. The fixed divider 6 is fixed to the distal end portion of the divider support rod 12 connected in a state of being connected, and the grain stalk raising device is constituted by the divider support rod 12 and the transmission case 13 for the raising device raised from the support frame 11. 7 is fixed. Then, of the plurality of grain stalk elevating devices 8 # arranged side by side on the left and right, the divider supporting rod 12 for supporting the grain stalk erecting device 8 located at the position closest to the uncut area at the lower portion is forcibly divided via the bracket 14. In addition to supporting the weeding device 15, the rear portion of the forced weeding device 15 extends further upward in a state where the rear portion of the forced weeding device 15 is branched laterally and forward from the transmission case 13 for the weeding device. It is attached to and supported by the upper end of the case 16.

As shown in FIGS. 1 to 5, the forced weeding device 15 has sprockets 15b and 15c rotatably mounted on both upper and lower ends of an outer case 15a connected to a bracket 14, and the sprockets 15b and 15c.
The chain 15d is wound around the chain 15d, and a hook 15e for locking the grain stalk is pivotally attached to the chain 15d at appropriate intervals, and the hook 15
e is protruded from the outer case 15a by the guide rail 15f so as to protrude from the outer case 15a so that the grain can be locked.
It is configured to fall down while being stored inside. The drive of the chain 15d is performed by a sprocket 15b, and the sprocket 15b is driven by power from a transmission shaft provided in the transmission case 16 for driving the weeding device. The driving speed of the chain 15d is set such that the rearward moving speed v of the chain 15d with respect to the body in the front-rear direction in the locking operation state is lower than the vehicle speed V. Thereby, weeding of the uncut culm is performed favorably so as to push the culm down to the side of the machine. The divider support rod 12 is formed of a round pipe member, and the mounting position of the bracket 14 in the divider support rod 12 is formed to be bent slightly downward and inclined. The lever is fitted around the center axis Q in a slightly downwardly inclined posture so as to be rotatable. On the other hand, in the weeding device drive transmission case 16, the front-rear transmission case 16 a at a position where the branch transmission shaft runs in the front-rear direction is arranged with respect to the horizontal branch transmission case 16 b connected to the raising device transmission case 13. It is rotatably supported around the core Q. Thereby, the forced weeding device 15 can be rotated around the center axis Q as a front-back axis as a whole. Then, in order to stop the forced weeding device 15 in its rotation operation and in a predetermined posture, the forced weeding device 15 is interlocked with an electric motor 18 as an actuator supported by a support bracket 17 connected to the elevating device transmission case 13. A pivot arm 19 rotatable around an axis R parallel to the center axis Q is supported. The pivot arm 19 has a first arm 20a and a second arm 20a.
An end of the first arm 20a of the arm member 20 constituted by connecting the arm 20b to the center axis Q parallel to the axis S parallel to the center axis Q so as to be relatively swingable, and the second arm 2
0b is pivotally attached to the outer case 15a of the forced weeding device 15. More specifically, the support bracket 17
The pinion gear 22 of the front-rear output shaft 21 interlockingly connected to the electric motor 18 fixedly installed through a speed reduction mechanism,
It is meshed with a large-diameter gear 23 integrally connected to the turning arm 19 so as to be rotatable around the axis R. Electric motor 1
Reference numeral 8 denotes a forcibly weeding device 15 around the center axis Q so that the adjusting dial provided on the control unit 4 is turned by an artificial operation so as to fall to the lateral side corresponding to the adjusting position of the adjusting dial. The rotation operation is performed steplessly. That is, the operation angle of the adjustment dial is detected by angle detection means such as a potentiometer, and the detection signal is input to a control device 27 provided in the body, and the control device 27 detects the rotation angle of the front-rear output shaft 21. In correspondence with the detection result of the rotary encoder 28, the electric motor 18 is set so that the forced weeding device 15 projects laterally outward of the body at the angle set by the adjustment dial.
Is driven. In addition, a tension spring 24 is provided over a second arm 20 b pivotally attached to the forced weeding device 15 and a first arm 20 a pivotally attached to the rotating arm 19, and the tension spring 24 of the second arm 20 b is extended. Both arms 20a, 20b
Is provided with a stopper 25 for restricting contact with the second arm 20b so as not to bend outward. The bent structure of the arm member 20 enables the forced weeding device 15 to easily retreat from the obstacle when, for example, an obstacle collides with the forced weeding device 15 from the outside.

Further, the first arm 20a and the second arm 20
A limit switch 26 is provided as detection means for detecting whether the relative angle with respect to b is smaller than a predetermined angle.
That is, the limit switch 26 is fixedly installed on the first arm 20a. Then, the lateral edge of the second arm 20b, whose relative angle around the axis S with respect to the first arm 20a becomes more acute, is defined by the longitudinal direction of the first arm 20a and the longitudinal direction of the second arm 20b. The position of the limit switch 26 is set so that the switching operation is performed when the relative angle formed by the above becomes an acute angle smaller than a predetermined angle. The predetermined angle is an angle that sets a limit when the forced weeding device 15 retreats around the axis S into the machine body when an external force is applied from the lateral side due to an obstacle or the like. The signal from the limit switch 26 is input to the control device 27, and the control device 27 determines that the relative angle between the first arm 20a and the second arm 20b has become an acute angle greater than or equal to a predetermined angle. When the ON signal from the limit switch 26 is inputted, the electric motor 18 forcibly retracts the forced weeding device 15 to a storage position inside the machine, that is, a position where the machine does not protrude laterally outward. It is configured to be driven as follows. still,
Whether the forced weeding device 15 is stored in the storage position is determined by the rotary encoder 28 that detects the rotation angle of the front-rear output shaft 21 for servo-controlling the electric motor 18.
The control device 27 is configured to make a determination based on the angle signal from the controller 27. Here, the control device 27, the electric motor 18, the rotary encoder 28, the electric motor 18 and the forced weeding device 1
5 and the limit switches 26 and the like constitute compulsory storage means A.

With the above structure, an external force is applied to the forced weeding device 15 so that the inside of the machine is pushed aside by obstacles such as ridges and uncut grass culms that cannot be weeded, and the first arm 20a When the forced weeding device 15 is swung until the relative angle between the arm and the second arm 20b reaches a predetermined angle detected by the limit switch 26, the control device 27 drives the electric motor 18 to force the forced weeding. The grass device 15 is forcibly retracted to the storage position where the body is stored. As a result, even when an external force that damages the forced weeding device 15 or the like is applied, the forced weeding device 15 is automatically stored in the crocodile so that the trouble can be automatically avoided.

Next, an embodiment of the second invention will be described. The description of the same structure as that of the first embodiment of the present invention will be omitted, and the description will be given with the same reference numerals.
As shown in FIG. 6, the outer case 15 of the forced weeding device 15 is provided.
In the vicinity of the upper edge of the outer lateral surface of the body in FIG. 5A, a round pipe grain stalk guide 29 is provided on the upper edge so that the weeded culm does not slip off the upper edge of the outer case 15a. It is set up along. And this grain stem guide 29
A pressure sensor 30 as an external force detecting means for detecting a pressure due to an external force acting from the lateral side toward the outer case 15a, that is, toward the inside of the machine, is connected to the cereal stalk guide 29.
It is provided in a state where the pressure between the outer case 15a and the outer case can be detected. Then, the detection information from the pressure sensor 30 is input to the control device 27 provided in the body. Then, when an external force that pushes the forced weeding device 15 toward the inside of the aircraft is applied to the forced weeding device 15 that protrudes laterally outward of the airframe, for example, the control device 27 causes, for example, difficult weeding. In the case where the forced weeding device 15 is pushed toward the inside of the machine by the dense uncut marrow grain culm, when the detection result of the pressure sensor 30 detects a pressure equal to or higher than a predetermined value, the electric actuator as an actuator is operated. The forced weeding device 15 is automatically retired to the storage position based on the detection result of the rotary encoder 28 that detects the storage position by driving the motor 18. Here, the control device 27, the electric motor 18, the rotary encoder 28, the arms for linking the electric motor 18 with the forced weeding device 15, the pressure sensor 30, and the like constitute a forced storage means A.

According to the configuration of the second aspect of the present invention, an external force is applied to the forced weeding device 15 so that the inside of the machine is pushed aside by obstacles such as ridges and uncut grass culms that cannot be weeded. When the controller 30 detects that the sensor 30 has received an external force equal to or higher than the preset pressure, the control device 27 drives the electric motor 18 to forcibly move the forced weeding device 15 to the storage position where the machine body is stored. Evacuate. As a result, even when an external force that damages the forced weeding device 15 or the like is applied, the forced weeding device 15 is automatically stored in the crocodile so that the trouble can be automatically avoided.

The present invention may be implemented as follows. (A) In the embodiment of the first invention, the first arm 20
The angle detection means such as a potentiometer or a rotary encoder is used instead of the limit switch as means for detecting the relative angle between a and the second arm 20b. (B) As another embodiment of the second invention, as shown in FIG.
Forced weeding device 5 to guide the root of uncut kernels
The external case 15a is provided with a pressure sensor 32 that can detect an external force received by the weeding rod 31 installed in a cantilever manner, and based on the detection result of the pressure sensor 32, the external force of a predetermined pressure or more is applied to the weeding rod 31. The forced weeding device 15 is automatically placed in the retracted position when the device is added to.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the accompanying drawings.

[Brief description of the drawings]

FIG. 1 is a rear view showing a structure in which a limit switch according to a first invention moves out of a forced weeding device in an on state.

FIG. 2 is a rear view showing a forced weeding device in a storage position (solid line) and a forced weeding device in an overhanging position (virtual line) according to the first invention, and showing a structure for retracting the forced weeding device;

FIG. 3 is a side view showing a forced weeding device and the like.

FIG. 4 is a front view showing a forced weeding device and the like.

FIG. 5 is a side view showing the front part of the combine.

FIG. 6 is a side view showing the forced weeding device of the second invention.

FIG. 7 is a side view showing a forced weeding device according to another embodiment of the second invention.

[Explanation of symbols]

 2 Traveling body 5 Cutting pre-processing section 7 Grain culm raising device 15 Forced weeding device 18 Actuator 20 Arm member 26 Detecting means 30 External force detecting means A Forced storing means Q Front and rear axis

────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Yoshigo Fukuoka 64 Ishizukita-cho, Sakai-shi, Osaka Kubota Sakai Works Co., Ltd. (56) References Open-ended Sho 55-142935 (JP, U) (58) Field (Int.Cl. ⁶ , DB name) A01D 63/02

Claims (2)

(57) [Claims] 1. A device for raising a grain stalk on an uncut mower side of a device for raising a grain stalk of a pre-cutting unit (5) mounted on a front portion of a traveling body (2). A forced weeding device (15) is provided which combs the planted cereal culm into the cereal culm raising device (7) into a culm to be cut and an uncut cereal culm at a more forward position and weeds. With this forced weeding device (1
5) is supported by an arm member (20) that can be pivotally driven by an actuator (18) provided in the pre-cutting unit (5), and the lower end of the forced weeding device (15). A combined weeding structure of a combine constructed so as to be able to move out and to the side of the fuselage by swinging around a nearby front-rearward axis (Q), and detecting a broken waist state of the arm member (20). Means (26), and the detecting means (26) detects that the waist angle of the arm member (20) has become greater than or equal to a predetermined value due to the retraction swing of the forced weeding device (15) toward the body. The forced weeding device (15) is driven by driving the actuator (18) based on the detection result.
Combined compulsory weeding structure provided with a forced storage means (A) for storing in the airframe. 2. A grain stem raising device (7) provided on the uncut moat side of a grain stem raising device (7) of a pre-cutting unit (5) mounted on a front portion of a traveling body (2). A forced weeding device (15) is provided which combs the planted cereal culm into the cereal culm raising device (7) into a culm to be cut and an uncut cereal culm at a more forward position and weeds. With this forced weeding device (1
5) is supported by an arm member (20) that can be pivotally driven by an actuator (18) provided in the pre-cutting unit (5), and the lower end of the forced weeding device (15). A forced weeding structure of a combine which is configured to be able to move out and to the side of the fuselage by swinging around a nearby front-rear axis (Q). And an external force detecting means (30) capable of detecting that an external force greater than the set value is applied.
A forced weeding structure of a combine provided with forced storage means (A) for driving the actuator (18) based on the external force detection result in (0) and storing the forced weeding device (15) in the body.