JP2020162425A - combine - Google Patents

Abstract

To provide a combine that can prevent entanglement of the raked grain culm to a support arm, and thereby enables the grain culm to be conveyed to the rear efficiently.SOLUTION: A raking device of a reaping pretreatment device is formed of a rotating shaft 11 extending in the left and right directions and a raking reel supported to the rotating shaft 11. The raking reel is formed of a pair of left and right reel frames 15, and a tine support shaft 16 being built at the tip end of the reel frame 15 and extended in the horizontal direction for hanging a tine 18 of raking the grain culm. In an axis center view of the rotating shaft 11, the reel frame 15 is formed of a support plate 20 fixed to the rotating shaft 11, and a support arm 21 provided at predetermined intervals in the circumference direction of the support plate 20 and extended radially. In the axis center view of the rotating shaft 11, a rotating direction side part of the support arm 21 is formed in a first curved shape for protruding in the rotating direction, and an anti-rotating direction side part of the support arm 21 is formed in a second curved shape for protruding in the rotating direction.SELECTED DRAWING: Figure 3

Description

The present invention relates to a combine equipped with a scraping device for scraping a grain culm or the like in a field.

In the conventional scraping device, a plurality of support arms extending in the radial direction are provided on a pair of left and right support plates provided on both sides of a rotating shaft extending in the left-right direction, and a plurality of support arms extending in the radial direction are provided at the tips of the support arms in the left-right direction. There is known a technique of erection of a support shaft extending to the support shaft and suspending a tine that scrapes a grain stalk at a predetermined distance in the left-right direction on the support shaft. (Patent Document 1)

Jikken Sho 61-134238

However, in the technique of Patent Document 1, there is a problem that the grain culm squeezed by the tines is entangled with the support arm and the grain culm cannot be efficiently transported to the rear side.

Therefore, a main object of the present invention is to provide a combine capable of efficiently transporting the grain culm to the rear side by preventing the culm squeezed by the tine from being entangled with the support arm.

The present invention that solves the above problems is as follows.
The invention according to claim 1 is a combine in which a pre-cutting device (3) is provided on the front side of the threshing device (4).
A scraping device (3A) for scraping the grain is provided on the front side of the auger device (3C) of the pre-cutting device (3), and the scraping device (3A) extends in the left-right direction. And a scraping reel (10) supported by the rotating shaft (11), and the scraping reel (10) is erected on a pair of left and right reel frames (15) and a tip portion of the reel frame (15). The leaf frame (15) is formed by a tine support shaft (16) extending in the left-right direction for suspending the tine (18) that scrapes the radius, and the leaf frame (15) is formed in the axial view of the rotation shaft (11). It is formed by a support plate (20) fixed to a rotating shaft (11) and a support arm (21) provided at a predetermined distance in the circumferential direction of the support plate (20) and extending in the radial direction. In the axial view of the rotation shaft (11), the rotation direction side portion of the support arm (21) is formed in a first curved shape protruding in the rotation direction, and the counter-rotation direction side portion of the support arm (21) is formed. It is a combine characterized by being formed in a second curved shape protruding in the rotation direction.

The invention according to claim 2 is the combine according to claim 1, wherein the first receding angle (A) of the first curved shape is increased from the base portion to the tip portion of the support arm (21).

The invention according to claim 3 is the combine according to claim 2, wherein the second receding angle (B) of the second curved shape is increased from the base portion to the tip portion of the support arm (21).

According to the fourth aspect of the present invention, the first receding angle (A) and the second receding angle (B) at the base portion of the support arm (21) are formed at the same angle, and the first receding angle (21) at the tip portion of the support arm (21) is formed. The combine according to claim 2 or 3, wherein the 1 receding angle (A) is formed at an angle larger than the 2nd receding angle (B).

In the invention according to claim 5, in the axial view of the rotation axis (11), the turning point (C) in which the angle change of the first receding angle (A) changes from decrease to increase is set to the rotation axis (11). ) As the center, and any of claims 2 to 4 provided outside the virtual circle (D) having a radius of half the length between the rotation axis (11) and the support axis (16) in the radial direction. The combine according to item 1.

The invention according to claim 6 supports a turning point (C) in which the angle change of the receding angle (A) changes from a decrease to an increase with the rotation axis (11) as a center. The combine according to any one of claims 2 to 4, which is provided inside the virtual circle (D) having a radius of half the length between the axes (16) in the radial direction.

The invention according to claim 7 has the support arm (21) formed with an opening (23) having a longitudinal direction along the radial direction, and a rib is formed at the opening edge of the opening (23). The combine according to any one of Items to 6.

According to the first aspect of the present invention, the rotation direction side portion of the support arm (21) is formed in a first curved shape protruding in the rotation direction, and the counter-rotation direction side portion of the support arm (21) protrudes in the rotation direction. Since it is formed in the shape of the second curved line, it is possible to prevent the culm that has been squeezed from being entangled with the support arm (21) and efficiently transfer it to the auger device (3C) on the rear side.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, the first receding angle (A) of the first curved shape is increased toward the tip of the support arm (21). , The culm that has been squeezed is further suppressed from being entangled with the support arm (21), and can be efficiently transferred by the auger device (3C) on the rear side.

According to the invention of claim 3, in addition to the effect of the invention of claim 2, the second receding angle (B) of the second curved shape is increased toward the tip of the support arm (21). It is possible to prevent the culm that has been squeezed from staying on the front side of the rotation direction side portion of the support arm (21).

According to the invention of claim 4, in addition to the effect of the invention of claim 2 or 3, the first receding angle (A) and the second receding angle (B) at the base of the support arm (21) are the same angle. Since the first receding angle (A) at the tip of the support arm (21) was formed at an angle larger than the second receding angle (B), the squeezed grain was formed on the support arm (21). It is possible to suppress entanglement and transfer it to the rear auger device (3C) more efficiently.

According to the invention of claim 5, in addition to the effect of the invention of any one of claims 2 to 4, an inflection point (C) is a virtual circle (D) centered on a rotation axis (11). ) Is provided on the outer side in the radial direction, so that the center of gravity of the support arm (21) shifts to the tip portion, so that the transport force can be increased.

According to the invention of claim 6, in addition to the effect of the invention of any one of claims 2 to 4, an inflection point (C) is a virtual circle (D) centered on a rotation axis (11). ), Since it is provided inside in the radial direction, it is possible to prevent the culm that has been squeezed from getting entangled with the base of the support arm (21).

According to the invention of claim 7, in addition to the effect of the invention of any one of claims 1 to 6, an opening (23) is formed in the support arm (21), and the opening (23) is formed. Since the ribs are formed on the opening edge of the support arm (21), the weight of the support arm (21) can be reduced and the load applied to the engine can be reduced. In addition, deformation of the support arm (21) can be prevented.

It is a right side view of the conventional general-purpose combine. It is a top view of the scraping device. It is a left side view of the main part of the scraping device of 1st Embodiment. It is a left side view of the scraping frame of 1st Embodiment. It is the left side view of the main part of the scraping device of 2nd Embodiment. It is a left side view of the scraping frame of the 2nd Embodiment. It is a left side view of the main part of an auger device. It is a top view of the main part of an auger device.

The present invention will be described with reference to the drawings. From the viewpoint of the pilot, the front side is the front side, the rear side is the rear side, the right hand side is the right side, and the left hand side is the left side.

As shown in FIG. 1, the general-purpose combine is provided with a traveling device 2 composed of a pair of left and right crawler traveling on the soil surface under the body frame 1, and harvesting of field culms on the front side of the body frame 1. A pretreatment device 3 is provided, a threshing device 4 for threshing and sorting harvested culms is provided on the rear left side of the harvesting pretreatment device 3, and an operator is provided on the rear right part of the harvesting pretreatment device 3. The control unit 5 on which the vehicle is boarded is provided.

An engine room 6 for mounting an engine is provided in the lower part of the control unit 5, and a grain tank 7 for storing threshed and sorted grains is provided in the rear side of the control unit 5, and the grain tank 7 is provided. On the rear side, a discharge cylinder 8 for discharging grains to the outside is provided. The discharge cylinder 8 is formed of a vertical discharge cylinder that is communicated with the lower part of the rear side of the Glen tank 7 and extends in the vertical direction, and a horizontal discharge cylinder that is communicated with the upper portion of the vertical discharge cylinder and extends in the front-rear direction. ..

The pre-cutting treatment device 3 includes a scraping device 3A for scraping and transporting the grain culm in the field while standing upright, a cutting blade device 3B for cutting the stock of the grain culm transported to the rear side, and a rear. It is composed of an auger device 3C that collects the collected grain culms on the left side and a feeder house 3D that collects the collected grain culms to the threshing device 4.

<Scraping device of the first embodiment>
As shown in FIG. 2, the scraping device 3A of the first embodiment supports the scraping reel 10, the rotating shaft 11 extending in the left-right direction to support the scraping reel 10, and both side portions of the rotating shaft 11. It is composed of a pair of left and right arms 12 and the like. Further, the rear portion of the arm 12 is fixed to each of the rotating shafts 13 extending in the left-right direction provided at the rear portion of the auger frame 40 of the auger device 3C.

The scraping reel 10 is composed of a pair of left and right reel frames 15 and a tine support shaft 16 extending in the left-right direction erected at the tip ends of the pair of left and right reel frames 15.

The tine support shaft 16 is provided with connecting portions 17 having openings formed at predetermined intervals in the left-right direction, and resin tines 18 are hung from the openings of the connecting portions 17, respectively. The upper part of 18 is covered with a resin cover 19 extending in the left-right direction. As a result, the grain culm squeezed by the tine 18 can be prevented from being entangled with the upper part of the tine 18 and efficiently transported to the rear side.

As shown in FIGS. 3 and 4, the rotating shaft 11 supports a cylindrical cylindrical shaft 14 extending in the left-right direction. In the axial view of the rotating shaft 11, the reel frame 15 extends in the radial direction from the support plate 20 formed in a pentagonal shape fixed to the outer peripheral portion of the cylindrical shaft 14 and the five sides of the outer peripheral portion of the support plate 20. It is formed from a support arm 21.

The portion of the support plate 20 between the support arm 21 and the support arm 21 adjacent in the circumferential direction is formed in an arc shape. As a result, the grain culm squeezed by the tine 18 can be prevented from being entangled with the support plate 20 and efficiently transported to the rear side. Further, a connecting portion 22 for supporting the side portion of the tine support shaft 16 is provided at the tip end portion of the support arm 21.

The front portion of the support arm 21 is formed in a substantially arc shape, and a receding angle (“first receding angle” in claim) A is formed larger toward the tip portion in the radial direction from the base portion. As a result, the culm that has been squeezed can be prevented from being entangled with the front portion of the support arm 21, and can be efficiently transported to the rear side. Further, it is possible to prevent the uncut grain culm from being entangled with the front portion of the support arm 21 on the uncut side in particular, and to prevent deterioration of the scraping performance.

The rear portion of the support arm 21 is formed in a substantially arc shape, and a receding angle (“second receding angle” in claim) B is formed larger toward the tip portion in the radial direction from the base portion. As a result, the culm that has been squeezed can be prevented from being entangled with the front portion of the support arm 21 that is adjacent in the circumferential direction, and can be efficiently conveyed to the rear side.

The receding angle A of the front portion of the support arm 21 and the receding angle B of the rear portion of the support arm 21 are formed at substantially the same angle, and the receding angle A of the front end portion of the support arm 21 is the receding angle A of the support arm 21. It is formed at an angle larger than the receding angle B of the tip portion of the rear portion. As a result, the culm that has been squeezed can be transported more efficiently to the rear side, and the deterioration of the culm performance can be further prevented.

The inflection point C at the front of the support arm 21, that is, the portion where the angle change of the receding angle A changes from decrease to increase, is centered on the axis of the rotation axis 11 and the axis of the rotation axis 11 and the tine support axis 16. It is formed so as to be located outside the virtual circle D having a radius of half the length between the axes. As a result, the center of gravity of the support arm 21 shifts to the tip end side, so that the transport force can be increased.

Further, the inflection point C at the front portion of the support arm 21 can be formed so as to be located inside the virtual circle D. As a result, the culm that has been squeezed can be prevented from being entangled with the base of the support arm 21, and can be efficiently transported to the rear side. Further, the inflection point C at the front portion of the support arm 21 can be formed by being positioned on the virtual circle D. As a result, it is possible to maintain a predetermined carrying force and prevent the squeezed culm from being entangled with the base of the support arm 21.

The support arm 21 is formed with an elliptical opening 23 whose longitudinal direction is along the radial direction. As a result, the weight of the support arm 21 can be reduced and the load applied to the engine can be reduced. Further, ribs (not shown) are formed on the peripheral edge of the opening 23. As a result, the rigidity of the support arm 21 is increased and deformation of the support arm 21 can be prevented.

The front side of the tip portion of the support arm 21 and the front side of the front portion of the connecting portion 22 are formed along substantially the same line. As a result, the culm that has been squeezed can be prevented from being entangled with the connecting portion 22, and can be efficiently transported to the rear side.
It should be noted that a conventional scraping device is known to include a strip-shaped connecting member for connecting the tip portions of support arms adjacent to each other in the rotational direction. Such a connecting member has a function of increasing the rigidity of the support arm and preventing the grain culm from entering the space formed between the support arms when viewed from the axial direction of the rotation axis of the scraping device.
On the other hand, the scraping device 3A of the first embodiment does not include a strip-shaped connecting member for connecting the tip portions of the support arms 21 adjacent in the rotation direction, but the arc shape and the retracting of the support arm 21. It is possible to prevent the culms that have entered the space between the support arms 21 adjacent to each other in the rotation direction from being entangled by the corners.

The front side of the front portion of the connecting portion 22 may be formed with a predetermined receding angle, and a guide guide (illustrated) that guides the cut grain culm at the tip portion of the connecting portion 22 to the rear side in the rotation direction. Omitted) can also be provided. As a result, the culm that has been squeezed can be transported more efficiently to the rear side.

<Scraping device of the second embodiment>
Next, the scraping device 3A of the second embodiment will be described. The same members as those of the scraping device 3A of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIGS. 5 and 6, in the axial view of the rotating shaft 11, the reel frame 15A has a support plate 30 formed in a circular diameter fixed to the outer peripheral portion of the cylindrical shaft 14 and an outer circumference of the support plate 30. It is formed from five support arms 31 formed in a substantially right-angled triangular shape fixed to the portion.

An R-shaped notch having the same radius as the radius of the support plate 30 is formed at the top of the support arm 31, that is, a portion of the support arm 31 facing the cylindrical shaft 14. Further, a connecting portion 32 for supporting the side portion of the tine support shaft 16 is provided at the tip end portion of the support arm 31.

For ease of understanding, one side forming the top of the support arm 31 is referred to as a bottom side 31A, a side facing the top is referred to as a front side 31B, and the other side forming the top is referred to as a rear side 31C.

The bottom side 31A of the support arm 31 is connected to the rear side 31C of the support arm 31 adjacent to the rotation direction side in the circumferential direction. As a result, the support arms 31 adjacent to each other in the circumferential direction are connected to each other via the bottom side 31A and the rear side 31C, so that the rigidity is increased and the support arm 31 can be prevented from being deformed.

The front side 31B of the support arm 31 is formed in a linear shape having a predetermined receding angle from the base portion to the tip portion. As a result, the culm that has been squeezed can be prevented from being entangled with the front portion of the support arm 31, and can be efficiently transported to the rear side.

The rear side 31C of the support arm 31 is formed in a linear shape extending in the radial direction from the base portion to the tip portion. As a result, the space formed between the support arms 31 adjacent to each other in the circumferential direction can be increased, and the space can be efficiently conveyed to the rear side.

The support arm 31 is formed with a substantially triangular opening 33 along the outer edge of the support arm 31. As a result, the weight of the support arm 31 can be reduced and the load applied to the engine can be reduced. Further, ribs (not shown) are formed on the peripheral edge of the opening 33. As a result, the rigidity of the support arm 31 is increased, and deformation of the support arm 31 can be prevented.

The front side 31B of the support arm 31 and the front side of the front portion of the connecting portion 32 are formed along substantially the same line. As a result, the culm that has been squeezed can be prevented from being entangled with the connecting portion 32 and can be efficiently transported to the rear side.

The front side of the front portion of the connecting portion 32 may be formed with a predetermined receding angle, and a guide guide (illustrated) that guides the cut grain culm at the tip portion of the connecting portion 32 to the rear side in the rotation direction. Omitted) can also be provided. As a result, the grain culm squeezed into the tine by 18 can be more efficiently transported to the rear side.

<Ogre frame>
Next, the auger frame 40 of the auger device 3C will be described. As shown in FIGS. 7 and 8, the auger frame 40 has a bottom wall 40A extending in the front-rear direction with a predetermined distance in the left-right direction and a predetermined distance in the left-right direction provided at the rear portion of the bottom wall 40A. The rear wall 40B extending in the vertical direction, the left wall 40C connecting the left portion of the bottom wall 40A and the left portion of the rear wall 40B, and the right portion of the bottom wall 40A and the right portion of the rear wall 40B. It is formed from the right wall 40D to be connected.

A scraping auger 41 extending in the left-right direction is rotatably supported on the left wall 40C and the right wall 40D. On the right side of the outer peripheral portion of the scraping auger 41, a transport spiral 42 for transferring the grain culms transported in the auger frame 40 to the left side is provided, and on the left side of the outer peripheral portion of the scraping auger 41, the culm is transferred to the left side. A scraping finger 43 for transporting the culm that has been culm to the feeder house 3D is provided. Further, in the front part of the left wall 40C and the front part of the right wall 40D, a cursive script 44 for weeding the culm of the field is provided, respectively.

A reinforcing member 45 extending in the vertical direction is provided on the left surface of the left wall 40C where the cutting blade device 3B is supported, and an up and down portion on the left surface of the left wall 40C where the scraping auger 41 is supported. A reinforcing member 46 extending in the direction is provided. Further, on the outside of the left surface of the left wall 40C, an elevating cylinder 48 for raising and lowering the scraping device 3A and a wobble shaft 49 extending in the front-rear direction for transmitting the output rotation of the engine to the cutting blade device 3B are provided. ..

The vertical intermediate portion between the reinforcing member 45 and the reinforcing member 46 is connected by a connecting member 50 extending in the front-rear direction provided in parallel with the wobble shaft 49, and the base portion of the elevating cylinder 48 is above the connecting member 50. Is fixed so that it can swing freely. As a result, the elevating cylinder 48 can be firmly attached to the left wall 40C of the auger frame 40 via the connecting member 50.

In the side view, the portion of the upper surface of the bottom wall 40A facing the scraping auger 41 is formed in a substantially pentagonal shape. As a result, the upper surface of the bottom wall 40A can be provided close to the auger 41, so that the dead space in which the culm stays can be reduced. Further, a drain hole 52 for draining rainwater or the like stored in the auger frame 40 to the outside is formed at the lowermost portion of the bottom wall 40A at a predetermined interval in the left-right direction. As a result, rainwater and the like stored in the auger frame 40 can be efficiently drained to the outside.

3 Pre-cutting processing device 3A Scraping device 3C Auger device 4 Threshing device 10 Scraping reel 11 Rotating shaft 15 Reel frame
16 Tyne support shaft 18 Tyne 20 Support plate 21 Support arm 23 Opening A receding angle (first receding angle)
B receding angle (second receding angle)
C Inflection point D Virtual circle

Claims (7)

In a combine provided with a pre-cutting device (3) on the front side of the threshing device (4).
A scraping device (3A) for scraping the culm is provided on the front side of the auger device (3C) of the pre-cutting device (3).
The scraping device (3A) is formed by a rotating shaft (11) extending in the left-right direction and a scraping reel (10) supported by the rotating shaft (11).
A tine support extending in the left-right direction for suspending a pair of left and right reel frames (15) and a tine (18) for grabbing a grain culm erected at the tip of the reel frame (15). Formed on the axis (16),
In the axial view of the rotating shaft (11), the leaf frame (15) is placed at a predetermined distance in the circumferential direction between the support plate (20) fixed to the rotating shaft (11) and the support plate (20). It is formed by a support arm (21) provided so as to extend in the radial direction.
In the axial view of the rotation shaft (11), the rotation direction side portion of the support arm (21) is formed in a first curved shape protruding in the rotation direction, and the counter-rotation direction side portion of the support arm (21) is formed. A combine characterized by being formed in a second curved shape protruding in the rotational direction. The combine according to claim 1, wherein the first receding angle (A) of the first curved shape is increased from the base portion to the tip portion of the support arm (21). The combine according to claim 2, wherein the second receding angle (B) of the second curved shape is increased from the base portion to the tip portion of the support arm (21). The first receding angle (A) and the second receding angle (B) at the base of the support arm (21) are formed at the same angle, and the first receding angle (A) at the tip of the support arm (21) is the first. 2. The combine according to claim 2 or 3, which is formed at an angle larger than the receding angle (B). In the axial view of the rotation axis (11), the inflection point (C) in which the angle change of the first receding angle (A) changes from decrease to increase is centered on the rotation axis (11). The combine according to any one of claims 2 to 4, which is provided outside the virtual circle (D) having a radius of half the length between the shaft (11) and the support shaft (16) in the radial direction. The length between the rotation axis (11) and the support axis (16) with respect to the rotation axis (11) at the inflection point (C) at which the angle change of the receding angle (A) changes from decrease to increase. The combine according to any one of claims 2 to 4, which is provided inside the virtual circle (D) having a radius of half of the length in the radial direction. The present invention according to any one of claims 1 to 6, wherein an opening (23) is formed in the support arm (21) along a radial direction in the longitudinal direction, and a rib is formed at the opening edge of the opening (23). Described combine.

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