JP2013135619A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester that improves a yield of a harvested product for bearing few seed on a branch such as field mustard.SOLUTION: A reaping part 21 is disposed on a front part of a machine body and a cutting blade 22 is horizontally provided on a front lower end of a platform 19 of the reaping part 21. The cutting blade 22 is driven by drive force transmitted from a reaping drive case 48 installed on the front part of the platform 19 through a link mechanism r. A division part 61 that can divide the platform 19 in the rear of the cutting blade 22 is arranged on the reaping part 21. An extension harvesting part 62 for recovering seeds fallen off from the harvested product reaped by the cutting blade 22 is arranged on the division part 61.

Description

  According to the present invention, a cutting part is disposed in the front part of the airframe, the cutting part laterally places a cutting blade at the lower end of the front part of the platform, and the cutting blade is provided in a cutting drive case installed at the front part of the platform. Regarding the combine driven by the driving force transmitted from the power transmission member through the link mechanism by the transmission member, more specifically, the cutting unit is provided with a dividing unit that can divide the platform behind the cutting blade, The dividing unit relates to a combine that is detachably provided with an extended harvesting unit that collects seeds that fall off from a harvested product cut by a cutting blade.

  The conventional combine harvester harvests crops such as cereals with the weed plate at the forefront of the machine, and rakes the harvest by rotating the reel. The cutting stock side of the harvest is cut with the cutting blade installed at the lower end of the front, and the harvested crop is laterally fed to the center side by the rotation of the lateral feed auger, and the rear side of the feeder is moved from the front end of the central feeder house by the feeder conveyor. There is one (for example, Patent Document 1 and Patent Document 2) in which a grain (fruit) that has been transported to the threshing unit and threshed by the threshing unit is stored in a Glen tank.

JP 2001-299041 A Japanese Patent Laid-Open No. 11-4619

In the above combine, if the harvest is rice, wheat, etc., the grains are relatively strong in the grain basket. Grains are rarely shattered, and cereals with grain can be transported to the thresher at the rear of the machine. However, if the harvest is something like a rape blossom, for example, the seeds such as rapeseed are not easily grown on the branches. Many seeds (rapeseed) are shattered from the branches due to the force applied from the outside during the cutting process such as during the cutting or during transport to the feeder house. For this reason, there is a problem that seeds to be harvested fall to the field scene at the cutting part at the front of the aircraft, and the yield is low due to harvest loss.
Accordingly, an object of the present invention is to provide a combine that improves the yield of a harvested product such as rape blossoms whose seeds are weak on the branches.

  Therefore, according to the first aspect of the present invention, a cutting portion is disposed at the front portion of the airframe, and the cutting portion is provided with a cutting blade at the front lower end of the platform, and the cutting blade includes the platform. In the combine driven by the driving force transmitted from the power transmission member in the cutting drive case installed in the front part of the cutting mechanism via the link mechanism by the transmission member, the platform behind the cutting blade is divided into the cutting part. The division unit is provided with an extension harvesting unit that detachably attaches to the division unit, which collects seeds that fall off from the crop harvested by the cutting blade.

  According to a second aspect of the present invention, in the combine according to the first aspect, a cutting blade drive case in which a power transmission member is provided on the same side as the cutting drive case at the outer end of the extended harvesting portion. It is characterized by having been installed.

  A third aspect of the present invention is the combine according to the first aspect, wherein the power transmission member is a tension portion of the transmission member when the extended harvesting portion is attached to the cutting portion. .

  According to a fourth aspect of the present invention, in the combine according to the first aspect, the reaping portion is configured to be separable into a front reaping portion and a rear reaping portion by the dividing portion, and a rear portion of the front reaping portion; A guide rail is formed on the front and rear portions of the extended harvesting portion and the front portion of the rear harvesting portion in the lateral direction of the vehicle.

  The invention according to claim 5 is characterized in that, in the combine according to claim 1 or 4, a movement assisting member is detachably installed on the bottom surface of the extended harvesting part or / and the front cutting part. .

  According to a sixth aspect of the present invention, in the combine according to the first or second aspect, the same power center as the power transmission member is provided outside the power transmission member in the cutting blade drive case, and the power transmission member A transmission member that rotates following the rotation is installed, and the transmission member and the power transmission member are connected by a transmission member when the extended harvesting portion is mounted.

  The invention according to claim 7 is the combine according to claim 2, wherein the power transmission member in the cutting blade drive case is an electric motor.

  According to the first aspect of the present invention, the cutting part is disposed at the front part of the airframe, the cutting part is provided with the cutting blade at the front lower end of the platform, and the cutting blade is provided at the front part of the platform. In the combine driven by the driving force transmitted from the power transmission member in the installed mowing drive case by the transmission member via the link mechanism, the mowing unit is provided with a dividing unit that can divide the platform behind the cutting blade At the same time, the split section is detachably equipped with an extended harvesting section that collects the seeds that fall off from the crops harvested by the cutting blade. When harvesting, the extended harvesting part attached to the split part of the platform collects seeds that have fallen immediately after cutting with the cutting blade into the extended harvesting part without dropping them into the field. Door can be. Therefore, the combine which raised the yield and improved workability | operativity can be provided.

  According to the second aspect of the present invention, since the cutting edge drive case having the power transmission member is installed on the same side as the cutting drive case at the outer end of the extended harvesting section, When the extended harvesting portion is mounted, a transmission member such as a belt for transmitting power to the cutting blade can be easily changed from the cutting drive case to the cutting blade drive case at the shortest distance without the operator moving greatly. Therefore, it is possible to provide a combine with improved workability.

  According to the invention described in claim 3, since the power transmission member is the tension portion of the transmission member when the extended harvesting portion is attached to the cutting portion, the bending of the belt changed from the cutting driving case to the cutting blade driving case. The cutting blade can be driven smoothly by adjusting the tension of the belt. Therefore, it is possible to provide a combine with improved workability.

  According to the invention described in claim 4, the cutting part is configured to be separable into the front cutting part and the rear cutting part by the dividing part, the rear part of the front cutting part, the front and rear parts of the extended harvesting part, and the rear part. A guide rail is formed on the front part of the cutting part in the left-right direction of the vehicle, so when attaching and detaching the extended harvesting part, it is easy to position and install each along the guide rail and to remove it easily. Can be. Therefore, it is possible to provide a combine with improved workability.

  According to the invention described in claim 5, since the movement assisting member is detachably installed on the bottom surface of the extended harvesting part or / and the front cutting part, when the extension harvesting part is attached / detached, the front cutting part The extended harvesting portion can be easily moved to a predetermined position by the movement assisting member. Therefore, it is possible to provide a combine with improved workability.

  According to the sixth aspect of the present invention, the transmission member that rotates along with the rotation of the power transmission member is installed outside the power transmission member in the cutting blade drive case and has the same axis as the power transmission member. In addition, since the transmission member and the power transmission member are connected by the transmission member when the extended harvesting portion is mounted, the link mechanism is separated from the power transmission member (pulley) when the extended harvesting portion is mounted. Since it is connected to the member (pulley), the power transmitted from the cutting pulley to the power transmission member (pulley) via the transmission member (belt) causes the power transmission member (pulley) to idle and the transmission member (belt). ) To drive the cutting blade through the link mechanism. Therefore, it is only necessary to wind a belt shorter than the transmission member (belt) in a short distance between the transmission member (pulley) and the power transmission member (pulley). Therefore, it is possible to provide a combine with improved workability.

  According to the seventh aspect of the present invention, since the power transmission member in the cutting blade drive case is an electric motor, the drive shaft of the electric motor is connected to the link mechanism when the extended harvesting portion is attached or detached. Alternatively, by releasing the connection, it is not necessary to replace the transmission member (belt), and the power transmission to the cutting blade via the link mechanism can be simplified by an electric motor. Therefore, it is possible to provide a combine with improved workability.

It is a left view of the normal type combine as an example of the present invention. It is an enlarged side view of the cutting part in the combine. It is a top view of a grain feeder. It is a partial cross section top view of an upper conveyance case. It is a left side schematic diagram of a cutting part. It is a right side schematic diagram of a cutting part. It is the perspective view which looked at the cutting part from upper direction. It is a perspective view of the cutting part equipped with the extended harvesting part. It is an assembly drawing of a cutting part provided with an extended harvesting part. It is a side view of the cutting part which shows the belt transmission structure to the cutting drive case before extension harvesting part mounting | wearing. It is a side view of the cutting part which shows the belt transmission structure to the cutting blade drive case after an extended harvesting part mounting | wearing. It is a side view of the cutting part which shows the other example of the belt transmission structure to the cutting blade drive case after the extension harvesting part mounting | wearing. It is a side surface schematic diagram which shows the cutting state of the rape blossom in the cutting part which does not mount | wear with an extended harvesting part. It is a side surface schematic diagram which shows the cutting state of the rape blossom in the cutting part equipped with the extended harvesting part. It is an assembly drawing of the cutting part which shows the example of the extended harvesting part which attached the caster to the bottom face. It is an assembly drawing of the cutting part which shows the example which attaches an extended harvesting part to a front cutting part and a rear cutting part with a slide rail. It is the side surface schematic diagram which showed the junction part of the slide rail of an extended harvesting part rear end part and a front part cutting part front end part. It is a perspective view of the cutting part which mounts the extended harvesting part which installed the electric motor.

The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a left side view of an ordinary combine as an example of the present invention, FIG. 2 is an enlarged side view of a cutting part in the combine, and FIG.

  As shown in FIG. 1, the combine 1 of this example has an airframe frame 3 placed on an upper part of a crawler type traveling device 2 provided at the lower part of the airframe. A cabin 6 is installed above a transmission case and an engine room (not shown) arranged at the front part of the machine body frame 3 and a cutting part 21 is arranged at the front end part of the machine body.

  Further, from the center to the rear of the machine body frame 3, a sorting device made of not-shown tang, chaff sheave, cereal board, etc. is arranged, and above this sorting device, a threshing made of a crimp net or a screw rotor is arranged. A device 5 is arranged. Further, a Glen tank 14 is disposed at the rear portion of the cabin 6, and a discharge auger 15 is projected from the upper side of the Glen tank 14.

  Further, a feeder house 17 incorporating a feeder conveyor (not shown) is connected to the front end of the screw rotor. The feeder house 17 is moved up and down by a hydraulic cylinder 18 interposed between the front end of the machine body frame 3.

  A platform 19 projects from the front portion of the feeder house 17, and a lateral feed auger 20 is laterally installed in the platform 19 as shown in FIG. 2. A cutting part 21 with a weeding board d projecting is provided sideways. In addition, the harvesting part 21 is provided with a scraping reel 4 for scraping a harvested product such as cereals that has been weeded by the weeding board d shown in FIG.

  The cutting part 21 is provided with a cutting blade 22 at the lower part, and above this cutting blade 22, a grain culm transporting device 23 having a transporting case 24 that scrapes and transports crops such as soybeans to the lateral feed auger 20 side. Is provided. Note that the transport case 24 is composed of a pair of left and right pairs, and in the example shown in FIG. 3, two pairs of transport cases 24 are shown.

  In this transport case 24, an endless and high (wide) cereal transport belt b is wound between a drive pulley p1 located at the front and an idler pulley p2 located at the rear. The plurality of tines 31 for raising the cereals are attached to the conveyor belt b at equal intervals.

  As shown in FIG. 4, an endless and high-width (wide) transport chain 30 is provided between the lower sprockets 26 and 27 located at the front part and the upper sprocket 28 located at the rear part. The plurality of tines 31 may be attached to the transport chain 30 at equal intervals. Reference numeral 32 denotes a drive sprocket, reference numeral 33 denotes a transmission sprocket, and reference numeral 34 denotes a drive chain.

  And between each of these left-right paired conveyance cases 24, the grain path | route 40 is provided, and the tine 31 with the conveyance belt b along this conveyance path | route 40 is made to the rear part direction from the front part of the conveyance case 24. Furthermore, it is set as the structure made to rotate by a well-known technique from the motive power of an engine.

  Therefore, the harvested product harvested by the cutting blade 22 in the harvesting unit 21 is transported to the platform 19 in the transport path 40 while being sandwiched between the tines 31 of the transport case 24 for each group in the crop feeding device 23. From this platform 19, it is further conveyed and processed by the threshing device 5 at the rear of the machine body.

  Next, the power transmission configuration of the cutting blade 9 will be described. FIG. 5 is a schematic diagram of the right side of the harvesting unit, FIG. 6 is a schematic diagram of the left side of the harvesting unit, and FIG. 7 is a perspective view of the harvesting unit as viewed from above. As shown in FIGS. 5 to 7, a sprocket 42 is provided at the end of the conveyance drive input shaft 41 as a drive transmission path for transmitting power from the engine on the side surface of the rear portion of the feeder house 17.

  On the other hand, a power branch case 43 is disposed on one side of the rear surface of the platform 19 (the right side surface in the illustrated example), and a cutting transmission shaft 44 having an axial center on the left and right is horizontally mounted on the power branch case 43. A cutting pulley 45 extending from the power branch case 43 to the side of the side of the platform 19 is fixed to the lower end portion of the cutting transmission shaft 44.

  Further, a driven pulley 47 of an auger drive shaft 46 of a lateral feed auger 20 supported on the side of the platform 19 in front of the cutting pulley 45 is fixed, and the cutting transmission shaft is connected to the cutting pulley 45 via a belt (not shown). The drive of 44 is transmitted to the transverse feed auger 20.

  A cutting drive case 48 as illustrated in FIG. 6 is fixed to the front portion of the side surface of the platform 19, and a belt 50 (hereinafter referred to as a belt made of synthetic rubber) as a transmission member from the cutting pulley 45. However, the present invention is not limited to this, and a metal chain or the like may be used. The power is transmitted to the pulley 51 as a power transmission member that is pivotally supported in the cutting drive case 48 and driven into the cutting drive case 48. The force is transmitted, and the drive blade of the cutting blade 22 is reciprocated in the left-right direction via a well-known link mechanism r such as an arm or a crank rod (not shown) to cut the crop stock. Note that the cutting drive case 48 is omitted from FIG.

  Next, the specific configuration of the extended harvesting part of the cutting part, which is a feature of the present invention, will be described. FIG. 8 is a perspective view of a harvesting unit equipped with the extended harvesting unit, FIG. 9 is an assembly diagram of the harvesting unit including the extended harvesting unit, and FIG. 10 is a harvesting unit showing a belt transmission configuration to the harvesting drive case before the extension harvesting unit is installed. FIG. 11 is a side view of the cutting part illustrating the belt transmission configuration to the cutting blade drive case after the extension harvesting portion is mounted, and FIG. 12 is a belt transmission configuration to the cutting blade drive case after the extension harvesting portion is mounted. It is a side view of the cutting part which shows another example.

  Further, FIG. 13 is a schematic side view showing a state of cutting rape blossoms at a harvesting part not equipped with an extended harvesting part, and FIG. 14 is a schematic side view showing a state of rapeseed harvesting at a cutting part equipped with an extended harvesting part.

  As shown in FIG. 8, the cutting portion 21 of the combine 1 according to the present invention divides the platform 19 into the platform 19 between the lateral feed auger 20 and the cutting blade 22 in the horizontal direction of the cutting portion 21 (partitioning). ) A division part 61 to be enabled is formed and divided into a front cutting part 21a and a rear cutting part 21b, and an extended harvesting part 62 is sandwiched between the front cutting part 21a and the rear cutting part 21b.

  As shown in FIG. 9, the extended harvesting part 62 has a substantially U-shape in front view including a bottom plate having the same shape as the front cutting part 21 a and the rear cutting part 21 b, and the length in the vehicle front-rear direction is illustrated in the figure. However, it is not limited to this, it can be made into arbitrary vehicle back-and-forth length.

  The extended harvesting unit 62 drives the cutting blade 22 with the power from the engine on the same side as the cutting drive case 48 installed on one side (in the illustrated example, the right side, but not limited) of the rear cutting unit 21b. A cutting blade drive case 64 is provided in which a pulley 63 as a power transmission member that transmits to the link mechanism r is provided.

  Further, for example, a stay 65 having a bolt hole protrudes rearward on the bottom surfaces of the left and right rear portions of the front harvesting portion 21a and the extended harvesting portion 62 described above, and the extended harvesting portion 62 and the rear harvesting portion. Fixing portions 66 having bolt holes are formed on the bottom surfaces of the left and right front portions of the portion 21b.

  Here, a method for attaching the extended harvesting unit 62 to the cutting unit 21 will be described with reference to FIGS. 7 and 9 to 11. As shown in FIG. 7 and FIG. 10 described above, the cutting unit 21 without the extended harvesting unit 62 includes the front cutting unit 21a and the rear cutting unit 21b that are connected to the stay 65 via the dividing unit 61. The left and right rear upper surfaces of the front cutting part 21a and the left and right front upper surfaces of the rear cutting part 21b, which are fastened to the fixing part 66 with bolts or the like and in which bolt holes are formed in advance, are bolted by a stay 67 having bolt holes. By being fastened, both are connected and fixed.

  Next, the belt 50 wound between the cutting pulley 45 and the pulley 51 is removed, and the bolts of the stay 65 and the stay 67 described above are released, and the stays 65 and 67 are removed to remove the front cutting portion. 21a and the rear cutting part 21b are divided forward and backward with the dividing part 61 as a boundary.

  And as shown in FIG. 9, the extended harvesting part 62 is inserted between the front harvesting part 21a and the rear harvesting part 21b, and the extended harvesting part 62 and the rear harvesting part 21b are respectively provided with a stay 65 on the left and right bottom surfaces. Are fastened to the fixing portion 66, and the upper surfaces of the left and right sides are fastened with bolts by stays 68 to connect and fix them together.

  Next, the front harvesting part 21 a and the extended harvesting part 62 are connected and fixed to each other by fastening the stay 65 to the fixing part 66 on the left and right bottom surfaces and fastening the bolts on the left and right upper surfaces with the stay 69.

  Next, a belt 70 as a transmission member having a length longer than that of the belt 50 described above is attached by being wound between the cutting pulley 45 and the pulley 63. At this time, the belt 70 is interposed via the pulley 51. The pulley 51 becomes a support member for the belt 70 by being wound (in the illustrated example, wound along the lower portion of the pulley 51, but may be wound along the upper portion of the pulley 51). At the same time, it can serve as a tension mechanism that adjusts the tension of the belt 70.

  With this configuration, when the extended harvesting unit 62 is mounted between the front cutting unit 21a and the rear cutting unit 21b, the position of the cutting blade 22 provided in the front cutting unit 21a is forward. Therefore, the cutting blade 22 can be driven by an easy operation of replacing the pulley 63 connected to the link mechanism r that drives the cutting blade 22 with the cutting pulley 45 with the belt 70.

  The power transmission path by the belt between the cutting pulley 45 and the pulley 63 is not limited to the above-described configuration, and may be configured as shown in FIG. In this case, on the outside of the pulley 51, a pulley 71 is installed as a transmission member that has the same axis as the pulley 51 and rotates in accordance with the rotation of the pulley 51.

  And the belt 50 mentioned above is always wound between the cutting pulley 45 and the pulley 51 without attaching the extended harvesting portion 62 (regardless of whether or not the extended harvesting portion 62 is attached). The power transmitted from the cutting pulley 45 to the pulley 51 via the belt 50 further drives the cutting blade 22 via the link mechanism r.

  Next, when the extended harvesting part 62 is mounted between the front cutting part 21 a and the rear cutting part 21 b as described above, the belt 72 is wound between the pulley 71 and the pulley 63. At this time, since the belt 50 between the cutting pulley 45 and the pulley 51 is always wound, it is not necessary to remove the belt 50 by mounting the extended harvesting portion 62.

  For this reason, when the extended harvesting part 62 is attached, the link mechanism r is separated from the pulley 51 and connected to the pulley 63, so that the power transmitted from the cutting pulley 45 to the pulley 51 via the belt 50 is The pulley 51 is idled and the cutting blade 22 is driven from the pulley 71 by the belt 72 via the link mechanism r.

  With such a configuration, when the extended harvesting portion 62 is attached, it is only necessary to wind the belt 72 shorter than the belt 50 between the pulley 71 and the pulley 63, thereby further improving the work efficiency. Can be improved.

  Then, with the above-described configuration, first, when harvesting a harvested field in the harvesting unit 21 that does not have the extended harvesting unit 62 shown in FIG. 13, for example, as an example of the harvested seed, a seed that easily falls off from a branch or the like. When cutting a rape blossom (not limited) having rape, etc., the stock is cut by the cutting blade 22 and the rape blossom raked into the platform 19 by the rake reel 4 The rapeseed (seed) with weak growth (attached) is likely to fall off from the branches and the like by receiving contact and vibration by the reel 4.

  Therefore, before the cut rapeseed-grown pods are transported into the feeder house via the lateral feed auger 20, many of these rapeseed fall from the branches, and the rapeseed is removed from the front of the platform 19 in the field. Even if the rapeseed had fallen into the platform 19 or dropped in the platform 19, it fell to the field from the front of the platform 19 where they were deposited, and the yield of rapeseed had decreased.

  On the other hand, as shown in FIG. 14, when rape blossoms are cut by the cutting unit 21 to which the extended harvesting unit 62 is attached, the reeds cut by the cutting blade 22 or the take-up reel 4 in the same manner as described above, The rapeseed falls from the branch within the branch 19. At this time, the extended harvesting part 62 increases the length of the bottom of the platform 19, so that the rapeseed dropped from the branch is placed on the extended harvesting part 62 (the bottom part of the long platform 19). ) Can be deposited.

  That is, the rapeseed shed from the branches as the rape blossoms are cut can be collected on the bottom of the platform 19 including the extended harvesting portion 62 without being dropped from the front of the platform 19 to the field as described above. ) Yield can be improved.

  The rapeseed collected at the bottom of the platform 19 can be taken out from the platform 19 and accommodated by appropriately tilting the platform 19 with the hydraulic cylinder 18 or the like according to the amount of accumulation.

  In addition, the mounting method of the extended harvesting part 62 is not limited to the structure mentioned above, It can also be set as the following structures. FIG. 15 is an assembly diagram of a cutting part showing an example of an extended harvesting part with a caster attached to the bottom surface, and FIG. 16 is an assembly of a cutting part showing an example of attaching the extended harvesting part to a front cutting part and a rear cutting part with a guide rail. FIG. 17 is a schematic side view showing a fitting portion of the guide rail between the rear end portion of the extended harvesting portion and the front end portion of the front cutting portion.

  In this case, as illustrated in FIG. 15, for example, movement assisting members 73 such as casters may be attached to the left and right bottom surfaces of the extended harvesting portion 62 ′ and the front cutting portion 21 a ′.

  With this configuration, when the extended harvesting portion 62 ′ is attached to or detached from the cutting portion 21 by the method described above, the front cutting portion 21 a ′ is moved from the rear cutting portion 21 b to the movement assisting member 73. Can be moved easily (removal of the front cutting part 21a '), and the extended harvesting part 62' is easily moved to a predetermined position by the movement assisting member 73 between the rear cutting part 21b and the front cutting part 21a '. Thus, the extended harvesting part 62 'can be attached and detached. Note that the fixing by the stays 65, 67, 68, and 69 is the same as described above, and a description thereof will be omitted.

  The movement assisting member 73 is detachable, and when the front cutting part 21a ′ and the extended harvesting part 62 ′ are attached, the movement assisting member 73 is removed, thereby preventing the cutting operation from being hindered. .

  Moreover, the mounting method of an extended harvesting part can also be made into the structure shown in FIG. In this case, for example, the front portion of the extended harvesting portion 62 ″ is a substantially concave guide rail 74 in the left-right direction and the rear portion of the extended harvesting portion 62 ″ is a substantially convex guide rail in the left-right direction. 75 is formed.

  Furthermore, a substantially concave guide rail 74 is formed in the front portion of the rear cutting portion 21b ′ so that the guide rail 75 in the rear portion of the extended harvesting portion 62 ″ can be fitted in the left-right direction. A substantially convex guide rail 75 that can be fitted to the guide rail 74 in the front part of the extended harvesting part 62 ″ is formed in the rear part of the part cutting part 21a ″. In addition, the shape and formation order of the guide rail mentioned above can be designed suitably.

  And when attaching / detaching the extended harvesting part 62 ″ to the cutting part 21 as described above, for example, the extended harvesting part 62 ′ positioned between the rear cutting part 21b ′ and the front cutting part 21a ″. ′ Is fitted to the rear cutting portion 21b ′ while sliding the rear guide rail 75 from the left and right sides to the front guide rail 74 of the rear cutting portion 21b ′ as shown in FIG. 17, for example. .

  Next, the front harvesting part 21a ″ is fitted to the guide rail 74 at the rear part of the extended harvesting part 62 ″ from the left and right side of the extended harvesting part 62 ″. Slide. In addition, although not described in the illustrated example, the above-described movement assisting member 73 may be detachably attached to the left and right bottom surfaces of the extended harvesting portion 62 ″ and the front cutting portion 21a ″.

  With such a configuration, the operator can extend and harvest the guide rails 74 and 75 and the front cutting part 21a ″ with respect to the rear cutting part 21b ′ when the extension harvesting part 62 ″ is attached and detached. Positioning along the guide rails 74 and 75 with respect to the part 62 ″ or the rear cutting part 21b ′ is facilitated and can be easily detached. Note that the fixing by the stays 65, 67, 68, and 69 is the same as described above, and a description thereof will be omitted.

  The attachment / detachment of the extended harvesting portion is not limited to the method of replacing or attaching / detaching the belts 50, 70, 72 described above, and may be configured as follows. FIG. 18 is a perspective view of a reaping portion on which an extended harvesting portion provided with an electric motor is mounted.

  In this case, as shown in FIG. 18, the left and right side surfaces of the extended harvesting portion 62 ″ attached to the rear cutting portion 21 b ″ (the surface on which the link mechanism r of the front cutting portion 21 a ″ is installed) An electric motor 76 is mounted in the cutting blade drive case 64 on the same side (right side in the illustrated example). Note that any of the above-described configurations may be used for the method of attaching and detaching the extended harvesting section 62 "".

  The electric motor 76 is connected to a battery (not shown) mounted on the vehicle, and the drive shaft 77 is connected to the link mechanism r so that the drive shaft 77 can be connected to the link mechanism r. Is projected.

  With such a configuration, when the extended harvesting portion 62 ″ is attached to and detached from the cutting portion 21, the belt 50, 70 is connected or disconnected by connecting or disconnecting the drive shaft 77 of the electric motor 76 to the link mechanism r. The power transmission to the cutting blade 22 via the link mechanism r can be simplified by the electric motor 76. Accordingly, it is possible to further improve the attaching / detaching workability of the extended harvesting portion 62 ″ ″.

  As described in detail above, the combine 1 of this example has the cutting part 21 disposed in the front part of the machine body, and the cutting part 21 has the cutting blade 22 provided horizontally at the front lower end of the platform 19 and the cutting part 21. The blade 22 is driven by the driving force transmitted from the cutting drive case 48 installed at the front portion of the platform 19 via the link mechanism r, and the platform 19 behind the cutting blade 22 can be divided into the cutting portion 21. The dividing unit 61 includes a detachable extended harvesting unit 62 that collects seeds that fall off from the crops harvested by the cutting blade 22.

  Note that the present invention can be applied to any combine that includes a harvesting unit having a platform and is used when harvesting a harvested product with weak seed growth (attachment) on a branch.

19 platform 21 cutting part 21a front cutting part 21b rear cutting part 22 cutting blade 48 cutting drive case 50 belt (transmission member)
51 pulley (power transmission member)
61 Dividing part 62 Extended harvesting part 63 Pulley (power transmission member)
64 Cutting blade drive case 70 Belt (transmission member)
71 Pulley (transmission member)
r Link mechanism

Claims (7)

A cutting part is arranged at the front of the aircraft,
The cutting part is provided with a cutting blade horizontally at the front lower end of the platform,
In the combine driven by the driving force transmitted through the link mechanism by the transmission member from the power transmission member in the cutting drive case installed in the front portion of the platform, the cutting blade,
The mowing unit is provided with a dividing unit that can divide the platform behind the cutting blade, and the dividing unit has an extended harvesting unit that collects seeds that fall off from the crop harvested by the cutting blade. A combine that features a detachable attachment.   2. The combine according to claim 1, wherein a cutting blade driving case having a power transmission member is provided on an outer end portion of the extended harvesting portion on the same side as the cutting driving case.   The combine according to claim 1, wherein the power transmission member is a tension portion of the transmission member when the extended harvesting portion is attached to the cutting portion.   The cutting part is configured to be separable into a front cutting part and a rear cutting part by the dividing part, a rear part of the front cutting part, front and rear parts of the extended harvesting part, and a front part of the rear cutting part. 2. The combine according to claim 1, wherein a guide rail is formed in the left-right direction of the vehicle.   The combine according to claim 1 or 4, wherein a movement assisting member is detachably installed on a bottom surface of the extended harvesting part or / and the front cutting part.   On the outside of the power transmission member in the cutting blade drive case, a transmission member that rotates in response to the rotation of the power transmission member is installed on the same axis as the power transmission member. The combine according to claim 1 or 2, wherein the transmission member and the power transmission member are connected by a transmission member at the time of mounting.   The combine according to claim 2, wherein the power transmission member in the cutting blade drive case is an electric motor.

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