JP2014068586A - Combine-harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine-harvester having a second cutting blade at the back of a cutting device, which is intended to reduce the size and enabled to perform safe and smooth harvesting works.SOLUTION: A combine-harvester comprises a second cutting blade (100) at the back of a first cutting blade (53) of a cutting device (5), and the second cutting blade (100) is supported by a transmission (M) for driving a travel unit (4). In a front elevation, moreover, a left support arm (101L) for supporting the second cutting blade (100) is arranged between the transmission (M) and the inner end portion of a left-hand crawler (41), and a right support arm (101R) for supporting the second cutting blade (100) is arranged between the transmission (M) and the inner end portion of a right-hand crawler (41).

Description

  The present invention relates to a combine.

  The combine includes a traveling device, a reaping device, and a threshing device, and performs reaping, threshing, and selection while traveling. As a conventional combine, for example, in Patent Document 1, the cereals harvested by a harvesting unit (reaping device) are transported to an upper threshing chamber (threshing device) and the transported cereals are transported in the upper threshing chamber. A second cutting blade is provided on the rear side of the harvesting device for a general purpose combine harvester that threshes by a rotationally driven barrel, and only the tip portion of the grain culm to be vegetated is cut by the first cutting blade, and a cereal stump after cutting is further provided. A combine having a second cutting blade for cutting has been proposed.

JP 2011-200188 A

  By the way, the general-purpose combine described in Patent Document 1 as described above is supported by the body frame by the support arm that the second cutting blade is disposed outside in the left-right direction with respect to the left and right crawlers of the traveling device. There is room for further improvement in that the left and right widths of the airframe are enlarged and the airframe or the support arm may come into contact with the shore during harvesting.

  Moreover, since the drive part of the 2nd cutting blade is arrange | positioned on the outer side of the conveying apparatus which conveys from a reaping part to a threshing apparatus, this drive part interferes with an uncut grain culm and reduces the quality of the cereal, There is room for further improvement in that the transmission efficiency of the second cutting blade is reduced by being wound around the drive unit.

  In order to move between the fields, when moving with overbringing or traveling on the road, the cutting device is raised with respect to the machine body. In this state, the tip of the second cutting blade is moved forward. Therefore, there is room for further improvement in that there is a risk that the obstacle below the second machine body and the cutting blade portion of the second cutting blade come into contact with each other and are damaged.

  This invention is made | formed in view of said situation, Comprising: While aiming at size reduction of the body of a combine, it aims at providing the combine which can perform a safe and smooth harvesting operation.

  In order to achieve the above object, the combine according to the present invention has the following technical means.

  That is, the invention described in claim 1 is provided with a traveling device (4) having left and right crawlers (41) on the lower side of the body frame (2), and a threshing device (7) on the upper side of the body frame (2). A control unit (28) is provided, a cutting device (5) is provided on the front side of the machine body frame (2), and a first cutting blade (53) for cutting cereals is cut into the cutting device (5), and the harvested grain In the combine provided with the transport device (56) for transporting the straw toward the threshing device (7), the combiner is provided with a second cutting blade (100) behind the first cutting blade (53), and the second cutting blade (100) is a combine characterized by being supported by a mission (M) that drives the traveling device (4).

  According to a second aspect of the present invention, a drive shaft (110) for driving the traveling device (4) is protruded from the lower part of the mission (M) to the left and right sides, and the left and right drive shafts (110) are connected to a mission case ( M), and the second cutting blade (100) is supported on the cylinder (110a) via the left support arm (101L) and the right support arm (101R). The left support arm (101L) is disposed between the mission (M) and the inner end of the left crawler (41), and the right support arm (101R) is disposed between the mission (M) and the right crawler (41). The combine according to claim 1 arranged between the inner end portion.

  The invention according to claim 3 is provided with a transmission shaft (130) interlocking with the transmission mechanism inside the mission (M), and the rotation of the transmission shaft (130) is converted into a reciprocating swing motion by the conversion mechanism (134). The combine according to claim 1 or claim 2 configured to transmit to the second cutting blade (100).

  The invention according to claim 4 is the left support arm (101L) and the right support arm (101R) for supporting the second cutting blade (100) on the mission (M) side in the front view of the conversion mechanism (134). The combine according to claim 3 arranged between the two.

  The invention according to claim 5 is configured such that the reaping device (5) is configured to be movable up and down, and an interlocking mechanism (104) for raising the second cutting blade (100) in conjunction with the ascent of the reaping device (5). And when the mowing device (5) is raised above a predetermined height, the tip of the second cutting blade (100) is at least more than the front end of the left support arm (101L) or the right support arm (101R) The combine according to claim 2, claim 3, or claim 4 configured to be located rearward.

  The invention according to claim 6 is the combine according to claim 5, wherein a cutting blade guard body (120) into which a tip portion of the second cutting blade (100) in the raised position enters is provided at a front portion of the control portion (28). It was.

  According to the first aspect of the invention, since the second cutting blade (100) is supported by the transmission (M) that drives the traveling device (4), the support member of the second cutting blade (100) is used as the body. It can comprise inside the outer side edge part of a flame | frame (2), and a contact with the supporting member of the 2nd cutting blade (100), the shore, etc. can be prevented.

  According to the second aspect of the present invention, in addition to the effect of the first aspect of the invention, the left support arm (101L) is connected to the transmission (M) and the inner end of the left crawler (41) in front view. Since the right support arm (101R) is arranged between the mission (M) and the inner end of the right crawler (41), the left support arm (101L) and the right support arm (101R) ) Can be prevented from interfering with obstacles on the side of the fuselage and uncut grain culm, and the efficiency of harvesting operations can be improved.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or claim 2, the second cutting blade (100) supported by the mission (M) has the inside of the mission (M). Since the rotational driving force from the transmission shaft (130) interlocked with the transmission mechanism is converted into a reciprocating swing motion by the conversion mechanism (134) and transmitted, the transmission mechanism to the second cutting blade (100) is simplified. The body can be reduced in size, and the manufacturing cost of the combine can be reduced.

  According to the invention described in claim 4, in addition to the effect of the invention described in claim 3, the conversion mechanism (134) is provided between the left support arm (101L) and the right support arm (101R) in the front view. Since it arrange | positions, the cutting | disconnection and degranulation by interference with a conversion mechanism (134) and an uncut grain cocoon can be prevented.

According to the invention described in claim 5, in addition to the effect of the invention described in claim 2, claim 3 or claim 4, when the reaping device (5) is raised above a predetermined height, the second Since the tip of the cutting blade (100) is located at the rear of at least the front end of the left support arm (101L) or the right support arm (101R), the second cutting blade (100) can be prevented from being damaged when not working. Thus, the durability of the second cutting blade (100) can be improved.
it can.

  According to the invention described in claim 6, in addition to the effect of the invention described in claim 5, the cutting blade in which the tip of the second cutting blade (100) in the raised position enters the front portion of the control portion (28). Since the guard body (120) is provided, the durability of the second cutting blade (100) in the raised state can be further improved, and the safety of workers around the second cutting blade can be improved.

FIG. 1 is a side view showing a schematic configuration of the combine according to the embodiment. FIG. 2 is a plan view illustrating a schematic configuration of the combine according to the embodiment. FIG. 3 is a front view showing a main part of the combine according to the embodiment. FIG. 4 is a side view of the main part of the combine according to the embodiment as viewed from the left side of the fuselage. FIG. 5 is a side view of the main part of the combine according to the embodiment as seen from the left side of the machine body, and shows a state where the reaping device is raised most. FIG. 6 is a side view of the main part of the combine according to the embodiment as seen from the left side of the machine body, and shows a transmission mechanism to the second cutting blade.

Embodiments according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.
[Embodiment]
In the following description, the front-rear direction is the front-rear direction of the combine 1. Further, the front-rear direction is a traveling direction when the combine 1 travels straight, and the front side in the straight direction is referred to as the front side, and the rear side is referred to as the rear side. Further, the vehicle width direction is a direction that is horizontally orthogonal to the front-rear direction, and the right side on the front side in the straight traveling direction is referred to as the right side, and the left side on the front side in the straight traveling direction is referred to as the left side. Further, the vertical direction is a direction orthogonal to the front-rear direction and the vehicle width direction. The front-rear direction, the vehicle width direction, and the vertical direction are orthogonal to each other.

  The combine 1 of this embodiment shown in FIG. 1 is a general-purpose combine that harvests and thresh cereal grains such as soybeans, buckwheat, rapeseed, etc., in addition to rice, using the power generated by the engine 3 as a power source. . As shown in FIGS. 1 and 2, the combine 1 includes an airframe 2, an engine 3 as a power source, a traveling device 4, a reaping device 5, a sorting device 6 (shown only in FIG. 1), a threshing A device 7, a Glen tank 8, and a power transmission device 9 are provided.

  The body frame 2 is a frame-like structural member of the body of the combine 1. As shown in FIG. 1, the machine body frame 2 includes a central horizontal frame 21 provided between the sorting device 6 and the threshing device 7, an upper horizontal frame provided above the threshing device 7, and a pre-threshing frame 23. And a handling room guide frame 24.

  As shown in FIG. 1, the pre-threshing frame 23 is provided to stand vertically in front of the threshing device 7 and the sorting device 6, and is wider than the width of the sorting device 6 and the threshing device 7 in the vehicle width direction. Is formed narrowly. The left end of the pre-threshing frame 23 is aligned with the left end of the front portion of the threshing device 7 (arranged in a position overlapping in the front-rear direction), and the right end of the pre-threshing frame 23 is the right end of the front portion of the sorting device 6. It is farther from the Glen tank 8 than. As shown in FIG. 3, the pre-threshing frame 23 is formed by connecting two vertical frames standing in the vertical direction with an interval in the vehicle width direction and the vertical frames to each other in the longitudinal direction of the body frame 2. And two plate members stacked on top of each other.

  The handling room guide frame is provided between the upper horizontal frame 22, that is, the threshing device 7 and the pre-threshing frame 23, and connects the upper horizontal frame 22 and the pre-threshing frame 23. The chamber guide frame forms a space K below. As shown in FIG. 1, the space K is between the handling chamber guide frame and the Glen tank 8, that is, the sorting device 6 and the threshing device 7, the pre-threshing frame 23, the conveying device 56 of the reaping device 5, and the control unit 28. It is formed between the Glen tank 8.

  The engine 3 is mounted on the front side in the front-rear direction on the body frame 2. The engine 3 is a source of driving force used in the combine 1. Further, the engine 3 is provided below a control unit 28 provided with an operation seat 27 on the body frame 2.

  The traveling device 4 is provided on the lower side in the vertical direction of the body frame 2. The traveling device 4 travels the entire combine 1 with the driving force from the engine 3. The traveling device 4 includes a crawler 41. The crawlers 41 are provided as a pair with a space in the vehicle width direction below the body frame 2 in the vertical direction. The traveling device 4 travels the entire combine 1 forward in the front-rear direction by the crawler 41 being driven by the driving force transmitted from the engine 3 via the mission M.

  From the lower part of the lower part of the mission M, a crawler drive shaft (drive shaft) 110 which is an output shaft of the mission M protrudes to the left and right sides, and drive wheels 111 are provided at both left and right ends of the crawler drive shaft 110. The drive wheels 111 are engaged with the crawler 41 to drive the crawler 41.

  The reaping device 5 is provided at the front part of the body frame 2. The reaping device 5 is driven by the driving force from the engine 3 to harvest the cereal and transports the harvested cereal to the threshing device 7 or the like. The reaping device 5 is driven by the driving force from the engine 3 to reaper the cereal and includes a reaping portion 55 and a conveying device 56. The reaping device 5 is configured to be rotatable up and down about a reaping input shaft (rotating shaft) 93 arranged in the left and right direction at the rear portion of the conveying device 56, and the height of the machine body can be changed. ing. The cutting unit 55 includes an auger frame 51 and an auger 52. The auger frame 51 includes a bottom plate 51a, a pair of left and right side plates 51b in the vehicle width direction, and a rear plate 51c. The auger 52 is disposed in the auger frame 51 along the vehicle width direction and is rotatably supported. Further, the cutting unit 55 is provided with a cutting blade 53 at the front side edge in the front-rear direction of the bottom plate 51 a and a scraping reel 54 for scrambling the culm above the cutting blade 53. The take-up reel 54 is provided so that the position in the front-rear direction and the height in the vertical direction can be adjusted. The reaping device 5 harvests and takes in the culm with the cutting blade 53 when the auger 52 or the like is driven while traveling by the power transmitted from the engine 3.

  The conveying device 56 is provided on the rear side of the cutting unit 55, more specifically, between the cutting unit 55 and the body frame 2. The conveying device 56 conveys the cereal meal to the threshing device 7 by the driving force from the engine 3. The transport device 56 includes a case 57 and a transport mechanism 58. The case 57 is formed in a quadrangular cross section and extends from the rear plate 51c of the auger frame 51 toward the threshing device 7 on the rear side in the front-rear direction. The case 57 is attached to the pre-threshing frame 23 at the rear end in the front-rear direction. Further, the case 57 is attached to the threshing device 7 by a connecting cylinder (not shown). The transport mechanism 58 is provided in the case 57. The transport device 56 transports the cereals from the reaping unit 55 to the threshing device 7 by driving the transport mechanism 58 with the power transmitted from the engine 3.

  The sorting device 6 is provided above the machine body frame 2 and behind the conveying device 56 of the reaping device 5. The sorting device 6 is provided on the side of the Glen tank 8 and on the left side of the machine frame 2. The sorting device 6 is a device that separates grains from foreign substances such as cocoons of cereals threshed by the threshing device 7 by the driving force from the engine 3. The sorting device 6 is provided below the central horizontal frame 21 and includes a sorting chamber 61, a swing sorting device 62 provided in the sorting chamber 61, an air blower 63, and the like. The sorting chamber 61 is made of a material containing grains shed by the threshing device 7 by the blowing from the blower ridge 63 driven by the driving force transmitted from the engine 3 and the swing of the swing sorting device 62. Remove impurities and sort and collect the grains. A to-be-processed object is what the handling cylinder 73 of the threshing apparatus 7 shed from the cereal.

  The threshing device 7 is provided above the body frame 2 and behind the conveying device 56 of the reaping device 5. Further, the threshing device 7 is provided on the side of the Glen tank 8 and on the left side of the body frame 2. The threshing device 7 threshs the cereals conveyed by the driving force from the engine 3. That is, the threshing device 7 is a device that separates the grains from the cereal husks harvested by the reaping device 5.

  The threshing device 7 is provided above the sorting device 6 and between the central horizontal frame 21 and the upper horizontal frame 22. The threshing device 7 includes a handling chamber 71, a handling cylinder 73 provided in the handling chamber 71, a handling cylinder shaft 74, and the like. The handling cylinder 73 is formed in a cylindrical shape, and a plurality of teeth 75 are provided on the outer peripheral surface. The handling cylinder shaft 74 is formed in a cylindrical shape, is inserted inside the handling cylinder 73, and is coupled so as to be integrally rotatable. The handling cylinder 74 and the handling cylinder 73 are supported in the handling chamber 71 so as to be integrally rotatable about a rotation axis. The rotation axis is parallel to the front-rear direction of the combine 1. The handling cylinder 73 threshs the cereal while rotating around the handling cylinder shaft 74 by the driving force from the engine 3. The handling chamber 71 is surrounded by a handling net 76 on the lower side in the vertical direction of the handling cylinder 73.

  The Glen tank 8 is provided on the side of the threshing device 7 and on the side of the sorting device 6 and the threshing device 7. The Glen tank 8 temporarily stores the grains threshed by the threshing device 7. A drain auger 81 is connected to the grain tank 8. The discharge auger 81 conveys the grains in the grain tank 8 by the driving force from the engine 3 and discharges the grains to the outside of the grain tank 8.

The power transmission device 8 is attached to the right end of the pre-threshing frame 23 and is provided in front of the sorting device 6 and the threshing device 7 and on a side surface facing the grain tank 8 of the pre-threshing frame 23. The power transmission device 9 transmits at least the driving force of the engine 3 to the transport device 56, the sorting device 6, and the threshing device 7 of the reaping device 5.
<Mowing device>
A second cutting blade 100 is provided behind the reaping device 5. When harvesting by raising the mowing device 5 in order to harvest the cereal by cutting only the tip side portion where the grain is present among the cereals, a long stump of the cereal after harvesting is put in the field. Although it will remain, this stump is positioned lower than the cutting blade 53, and the stump is cut even shorter to facilitate the running of the vehicle by the traveling device 4 and to facilitate the leveling work by the harvested tractor and the like.

  The second cutting blade 100 is supported by the crawler drive shaft 110. Specifically, a left support arm 101L that supports the second cutting blade and a right support shaft 103 provided at the tip of a bracket 102 that is provided integrally with an outer cylinder (cylinder) 110a of the crawler drive shaft 110 and the right support arm 101L. A base portion of the support arm 101R is rotatably supported. The rotation shaft 103 is located in front of and above the crawler drive shaft 110.

  An interlocking mechanism 104 is provided between the intermediate portion of the left support arm 101L and the transport device 56.

  The interlocking mechanism 104 includes an interlocking arm 105. A long hole is formed in the upper part of the interlocking arm 105 whose lower end is pin-coupled to the middle part of the left support arm 101L, and a pin extending from the lower part of the transport device 56 to the right side is engaged with this long hole. Yes.

  With the above configuration, when the height of the cutting device 5 with respect to the machine body changes within a range less than the predetermined height, the pin on the conveying device 56 side slides in the long hole of the interlocking arm 105, so the second cutting blade When the height of the machine body of the reaping device 5 exceeds a predetermined height, the pin on the conveying device 56 side reaches the upper end of the interlocking arm 105 and the second cutting machine The blade 100 is lifted, and the second cutting blade 100 is raised.

  Although not shown, a stopper that defines the lowest position of the second cutting blade 100 is provided, and this stopper interferes with the left support arm 101L and the right support arm 101R, so that the second cutting blade The blade 100 is configured to be held at the lowest lowered position.

  FIG. 5 shows the main part of the combine 1 in a state in which the mowing device 5 is raised to a predetermined height or higher. In this state, the second cutting blade 100, the left support arm 101L, and the right support arm 101R are The tip of the second cutting blade 100 in the protruding direction of the blade is retracted above the tangent line of the crawler 41 passing through the tip of the cutting device 5 and the front ends (tips) of the left support arm 101L and the right support arm 101R. Part) above and behind. Therefore, the tip of the second cutting blade 100 is prevented from coming into contact with an obstacle and being damaged, and cutting performance is deteriorated.

  And the right side part of the front-end | tip part of the 2nd cutting blade 100 of this state enters into the lower side of the cutting blade guard body 120 provided in the lower front side of the control part 28, and the safety | security around the 2nd cutting blade 100 is improved. Let

  The left support arm 101L and the right support arm 101R are disposed between the crawler 41 and the mission M, respectively, in the left-right direction. That is, the right support arm 101R is disposed between the inner end portion of the right crawler 41 and the mission M, and the left support arm 101L is disposed between the inner end portion of the left crawler 41 and the mission M.

  Further, the left support arm 101 </ b> L is disposed outside the inner end portions of the threshing device 7 and the transport device 56. Therefore, the transport device 56 and the left support arm 101L overlap in a front view.

  Further, the right support arm 101 </ b> R is disposed outside the inner end of the control unit 28.

  FIG. 6 is a main part side view showing a transmission mechanism of the second cutting blade 100.

  From the left side surface of the transmission M, a transmission shaft 130 for taking out the driving force from the engine 3 that has been changed by the continuously variable transmission H and transmitted into the transmission M protrudes, and a transmission pulley is provided at the end of the transmission shaft 130. 131 is provided. Although illustration is omitted, between the transmission shaft 130 and the transmission pulley 131, a rotational output in one direction of the transmission shaft 130 is transmitted to the transmission pulley 131, and a rotational output in the opposite direction is transmitted. Equipped with a one-way clutch mechanism to shut off.

  A belt 132 is wound around the transmission pulley 131 and the pulley 133 on the same axis as the rotation shaft 103, and the rotation of the pulley 133 is converted into a reciprocating swing motion by a conversion mechanism (wobble mechanism) 134. This reciprocating rocking motion is transmitted to the wobble shaft 135, and the second cutting blade 100 is driven.

As described above, when the one-way clutch mechanism is provided in the transmission path from the mission M to the conversion mechanism 134, the second cutting blade 100 stops without being driven when the aircraft is moving backward, and the drive applied to the engine 3 is stopped. Reduce load and improve safety.
<Another example of embodiment>
The left support arm 101L and the right support arm 101R may be rotatably supported by the outer cylinder 110a (coaxially with the crawler drive shaft 110), thereby simplifying the support structure and reducing the weight of the fuselage. In addition, accumulation of sawdust and mud on the support portion can be suppressed.

  In this case, it is desirable that the conversion mechanism 134 is configured to be fitted to the outer cylinder of the crawler drive shaft 110.

  Further, when the conversion mechanism 134 is arranged on a separate axis from the crawler drive shaft 110, the wobble shaft 135 is composed of two shaft members, and the other shaft is spline-coupled within one shaft. It is desirable to be able to expand and contract and to be able to be driven at all times regardless of the height of the second cutting blade 100 with respect to the machine body.

  Further, instead of the conversion mechanism 134, a configuration may be adopted in which the rotary motion is converted into a reciprocating linear motion by the crank mechanism and the second cutting blade 100 is driven, and in this case, the outer cylinder of the crawler drive shaft 110 is divided and driven. The shaft itself can be exposed, and a crank mechanism can be configured at the exposed portion.

  In addition, the combine which concerns on embodiment of this invention mentioned above is not limited to embodiment mentioned above, A various change is possible in the range described in the claim.

2 Machine frame 3 Engine 5 Cutting device 7 Threshing device 28 Control unit 41 Crawler 53 First cutting blade 56 Transport device 100 Second cutting blade 101L Left support frame 101R Right support frame 104 Interlocking mechanism 110 Drive shaft 110a Tubular body 130 Transmission shaft 134 Conversion mechanism M Mission

Claims (6)

  A traveling device (4) having left and right crawlers (41) is provided below the fuselage frame (2), a threshing device (7) and a control unit (28) are provided above the fuselage frame (2), and the fuselage frame A reaping device (5) is provided on the front side of (2), and the reaping device (5) is provided with a first cutting blade (53) for reaping the culm and the reaped culm toward the threshing device (7). The combine provided with the conveying apparatus (56) which conveys is equipped with the 2nd cutting blade (100) behind the said 1st cutting blade (53), and this 2nd cutting blade (100) is connected to the said traveling apparatus (4). ) That is supported by the mission (M) that drives).   A drive shaft (110) for driving the traveling device (4) is protruded from the lower part of the mission (M) to the left and right sides, and the left and right drive shafts (110) are integrated with the transmission case (M). 110a), and the second cutting blade (100) is supported on the cylindrical body (110a) via the left support arm (101L) and the right support arm (101R), and the left support arm (101L) in a front view. Is disposed between the mission (M) and the inner end of the left crawler (41), and the right support arm (101R) is disposed between the mission (M) and the inner end of the right crawler (41). The combine according to claim 1.   A transmission shaft (130) interlocking with a transmission mechanism inside the transmission (M) is provided, and the rotation of the transmission shaft (130) is converted into a reciprocating swinging motion by a conversion mechanism (134) to convert the second cutting blade (100 The combine according to claim 1 or 2, wherein the combine is transmitted to (1).   The said conversion mechanism (134) is arrange | positioned between the left support arm (101L) and the right support arm (101R) which support the said 2nd cutting blade (100) to the mission (M) side in front view. Combine as described.   The mowing device (5) is configured to be movable up and down, and includes an interlocking mechanism (104) that raises the second mowing blade (100) in conjunction with the ascent of the mowing device (5). When it raises more than predetermined height, it is set as the structure which the front-end | tip part of a 2nd cutting blade (100) is located back rather than the front-end part of at least left support arm (101L) or right support arm (101R). The combine according to claim 2 or claim 3 or claim 4.   The combine of Claim 5 which provided the cutting blade guard body (120) into which the front-end | tip part of the 2nd cutting blade (100) in a raise position enters in the front part of the said control part (28).

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