JP5122388B2 - Combine - Google Patents

Description

  The present invention relates to a combine.

  Conventionally, a pulling device that causes cereals, a cutting device that cuts cereals caused by the pulling device, and a cereal that is caused by the pulling device and a cereal that is cut by the cutting device are conveyed to the threshing unit side. Combines having a cutting part with a device are known. In such a combine harvester, the cutting device includes a fixed blade and a movable blade extending in the left-right direction as a cutting blade for cutting the stock side of the grain straw, and the fixed blade and the movable blade are moved up and down. In a state of being stacked, the movable blade is configured to cut the cereal by reciprocatingly sliding the movable blade with respect to the fixed blade.

However, such a cutting device has a problem that large vibration and noise are generated when the cereal is cut by the fixed blade and the movable blade. Then, in order to eliminate this problem, what used the disk-shaped cutting blade as a cutting blade for cut | disconnecting a grain candy has been proposed (for example, refer patent document 1). In this cutting apparatus, a plurality of disk-shaped cutting blades (disk-shaped rotary cutters) are arranged in a substantially same straight line in the left-right direction, and each is driven to rotate, thereby cutting the cereals. ing.
Japanese Patent Laid-Open No. 11-46552

  In the conventional combine, in the cutting part, the cutting device is provided such that each cutting blade is held at a fixed position with respect to the cutting frame that is the cutting part main body. For this reason, when cutting cereals, the cutting timing of the culm is not appropriate when the cutting speed, for example, the vehicle speed changes, and the cereals are smoothly conveyed by the conveying device on the reaping frame. There was something that could not be done.

  Therefore, the present invention has an object to provide a combine that can smoothly transport the cereal by the conveying device at the time of cutting the cereal by adjusting the cutting timing of the cereal in the cutting device in the cutting unit. And

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, in claim 1, the pulling device that causes the culm, the cutting device that cuts the culm caused by the pulling device, the culm that is caused by the pulling device, and the cereal that is cut by the cutting device A combine having a reaping unit with a conveying device for conveying rice cake to the threshing unit side, wherein the cutting device includes a plurality of disk-shaped cutting blades for cutting the rice cake on the stock side, and the plurality of cuttings A drive actuator that rotationally drives the blade, a drive case that supports the plurality of cutting blades and the drive actuator, and that is interlocked and connected via a transmission mechanism that has these inside; and And moving means for supporting the pulverizing unit side or the threshing unit side so as to be movable and holding the reaping unit main body at an arbitrary position of the moving destination. That.

  According to a second aspect of the present invention, the moving unit includes a moving actuator that can move and hold the drive case, and includes a vehicle speed detecting unit that detects a vehicle speed, and a control unit that controls the driving of the moving actuator. The control means moves the drive case to the pulling device side or the threshing portion side by a predetermined movement amount according to the vehicle speed detected by the vehicle speed detection means and holds it at an arbitrary position of the movement destination. As described above, drive control of the moving actuator is performed.

  According to a third aspect of the present invention, the moving means is configured to move the drive case substantially horizontally.

  As effects of the present invention, the following effects can be obtained.

  In Claim 1, in a cutting device, a plurality of cutting blades are moved to a raising device side or a threshing portion side with respect to a cutting part main body together with a drive case by a moving means, and held at an arbitrary position of the moving destination. It becomes possible. Therefore, it is possible to change the cutting timing of the cereal by changing the positions of the plurality of cutting blades in the front-rear direction. Therefore, in the reaping part, the cutting timing of the culm with the cutting device is appropriately adjusted according to the state of the reaping work, and the cereal is smoothly conveyed by the conveying device on the reaping part main body when the culm is cut. It can be carried out.

  According to claim 2, in the cutting device for the cutting part, the plurality of cutting blades are moved to the pulling device side or the threshing part side with respect to the cutting part main body together with the drive case by the moving means according to the speed of the traveling of the combine. And can be held at an arbitrary position of the movement destination. Therefore, it becomes possible to automatically change the positions of the plurality of cutting blades in the front-rear direction to change the cutting timing of the cereal. Therefore, in the cutting part, according to the increase or decrease of the vehicle speed, the cutting timing of the grain culm in the cutting device is appropriately adjusted as needed, and when the grain is cut, Transport can be performed smoothly.

  In claim 3, even when the position of the plurality of cutting blades is changed by the moving means in order to adjust the cutting timing of the culm with the cutting device of the cutting part, the culm is cut at the cutting height before the change. That is, it becomes possible to cut at a constant cutting height. Therefore, the cereal can be stably cut by the cutting device and can be smoothly transported by the transport device. In addition, the cut traces of cereals in the field can be made clean.

  Next, embodiments of the invention will be described.

  First, the overall configuration of a four-row combine combine 1 having a cutting unit 20 according to an embodiment of the present invention will be described.

  As shown in FIG. 1, the combine 1 has a traveling unit 10, a cutting unit 20, a threshing unit 30, a sorting unit 40, a grain storage unit 50, and a waste processing unit with respect to the body frame 2. 60, an engine unit 70, a mission unit 80, and a control unit 90 are provided.

  The traveling unit 10 is provided in the lower part of the body frame 2. The traveling unit 10 includes a crawler traveling device 11 having a pair of left and right crawlers, and the like, and is configured so that the body can travel forward or backward by the crawler traveling device 11.

  The cutting unit 20 is provided at the front end of the body frame 2 so as to be movable up and down with respect to the body. The cutting unit 20 includes a weeding tool 21, a pulling device 22, a cutting device 23, a transporting device 24, and the like. It is configured to cause the subsequent culm, to cut the pulverized culm by the cutting device 23, and to transport the culm after the cutting to the threshing unit 30 side by the transport device 24.

  The threshing unit 30 is provided at the left front portion of the machine body frame 2 and is disposed behind the reaping unit 20. The threshing unit 30 includes a transport device 31, a handling cylinder, a receiving net, and the like, inherits the cereals that are transported from the cutting unit 20 by the transport device 31, and transports them to the waste disposal processing unit 60 side. It is comprised so that the threshing grain currently conveyed can be threshed by the trunk | drum and a receiving net, and the threshing can be leaked.

  The sorting unit 40 is provided on the left side of the machine body frame 2 and is disposed below the threshing unit 30. The sorting unit 40 includes a rocking sorting device, a wind sorting device, a grain transporting device, a sawdust discharging device, and the like. Swing and sorting into swarf and dust, etc., wind-sorting after swaying and sorting by wind sorting device into grain and swarf and dust, etc., and grain after sorting by grain transport device While being conveyed to the storage part 50 side, it is comprised so that wastes, dust, etc. can be discharged | emitted outside by a waste discharger.

  The grain storage part 50 is provided in the right rear part of the body frame 2, and is arrange | positioned at the right side of the threshing part 30 and the selection part 40. FIG. The grain storage unit 50 includes a grain tank 51, a grain discharge device 52, and the like. The grain storage unit 50 stores the grain conveyed from the sorting unit 40 by the grain tank 51, and stores it by the grain discharge device 52. It is comprised so that the inside grain can be discharged | emitted after conveying in an arbitrary direction.

  The waste disposal unit 60 is provided at the left rear portion of the machine body frame 2 and is disposed behind the threshing unit 30. The waste processing unit 60 includes a waste transporting device, a waste cutting device, and the like, and inherits the threshed cereal that is transported from the threshing unit 30 by the waste transporting device and uses this as a waste. It is constituted so that it can be discharged to the outside, or conveyed to the waste cutting device, cut by the waste cutting device, and discharged to the outside.

  The engine unit 70 is provided at the front right side of the machine body frame 2 and is disposed in front of the grain storage unit 50. The engine unit 70 has an engine or the like so that the power of the engine can be supplied to each unit device using the engine as a drive source via an appropriate transmission mechanism so that the unit device can be driven by the engine. Composed.

  The mission unit 80 is provided at the right front portion of the body frame 2 and is disposed in front of the engine unit 70. The mission unit 80 has a transmission or the like so that the power of the engine of the engine unit 70 can be shifted by the transmission before being supplied to each device such as the traveling unit 10 and the cutting unit 20. Composed.

  The control unit 90 is provided at the right front part of the body frame 2 and is disposed above the engine unit 70 and the mission unit 80. The control unit 90 includes various operation tools including a steering handle 91 and a shift lever, a control seat 92, a cabin 93, and the like. It is configured such that it can be seated and the operating tool and the cockpit 92 can be covered by the cabin 93.

  In this way, the combine 1 cuts the aircraft while the vehicle is traveling by the traveling unit 10 by supplying the power of the engine from the engine unit 70 to the devices of each unit by operating the operation tool at the control unit 90. The cereals in the field are harvested by the unit 20, the cereals from the reaping unit 20 are threshed by the threshing unit 30, the cereals from the threshing unit 30 are sorted by the sorting unit 40, and the sorting unit 40 is sorted by the grain storage unit 50. At the same time as storing the grains from the threshing unit 60, the slaughtering unit 60 can discharge the sewage from the threshing unit 30 to the outside.

  Next, the configuration of the cutting unit 20 will be described.

  As shown in FIG. 2, the cutting unit 20 includes a cutting frame 110 in addition to the above-described weeding tool 21, the pulling device 22, the cutting device 23, and the conveying device 24. The reaping part 20 is supported on the left front end of the body frame 2 by a reaping frame 110 serving as a reaping part main body, and is disposed in front of the body frame 2.

  In the vicinity of the support portion of the cutting unit 20 with respect to the body frame 2, on the body frame 2 side, a pair of left and right support bases 3 are erected in parallel at predetermined intervals in the left-right direction at the left front end portion of the body frame 2. A pipe receiving member 4 is provided on each of the left and right support bases 3.

  On the cutting unit 20 side, the cutting frame 110 is provided with a cutting input pipe 111. Then, the cutting input pipe 111 is horizontally disposed in the horizontal direction between the pipe receiving members 4 on the left and right support bases 3 above the left front end portion of the machine body frame 2. Each is rotatably supported by a pipe receiving member 4 on the support 3.

  In the cutting frame 110, in addition to the cutting input pipe 111, a vertical transmission pipe 112, a horizontal transmission pipe 113, a plurality of weed frames 114, a left and right pulling vertical transmission pipe 116, a pulling horizontal transmission pipe 117, A plurality of pulling drive pipes 118 and a connection frame 119 are provided.

  In the cutting frame 110, the vertical transmission pipe 112 is disposed in front of the cutting input pipe 111 and extends from the middle of the left and right of the cutting input pipe 111 toward the front obliquely downward direction. The horizontal transmission pipe 113 is disposed in front of the vertical transmission pipe 112 and extends from the front end of the vertical transmission pipe 112 in the left-right direction.

  The plurality of weed frames 114 are arranged in front of the lateral transmission pipe 113 and are arranged in parallel with each other at an appropriate interval in the left-right direction. As shown in FIGS. 3 and 5, of these weeding frames 114, the left and right outer weeding frames 114 </ b> A located on the outermost side extend forward from the left and right ends of the lateral transmission pipe 113, respectively. Is done.

  Among the plurality of weed frames 114, the remaining inner weed frames 114B located inside the left and right outer weed frames 114A are provided in the cutting device 23 and are juxtaposed with the lateral transmission pipe 113 in front and rear. The drive case 234, which will be described later, extends from the middle part in the left and right direction in the left and right direction at predetermined intervals.

  Among these inner weed frames 114B, the left and right widths of the inner weed frame 114B and the right outer weed frame 114A are set between the left and right outer weed frames 114A, It arrange | positions so that it may become larger than the left-right width of the weeding frame 114B and the left outer weeding frame 114A.

  The left and right elevating vertical transmission pipes 116 are arranged above the horizontal transmission pipe 113 and are erected from the left and right ends of the horizontal transmission pipe 113 upward and obliquely upward. The pulling lateral transmission pipe 117 is disposed in front of and above the lateral transmission pipe 113, and is horizontally disposed in the left-right direction between the upper ends of the left and right pulling vertical transmission pipes 116.

  The plurality of pull-up drive pipes 118 are disposed below the pull-up lateral transmission pipe 117 and extend downward from the left and right midway portions of the pull-up horizontal transmission pipe 117 in the left-right direction at predetermined intervals. The connecting frame 119 is disposed behind the pulling horizontal transmission pipe 117 and extends rearward from the left and right midway part of the pulling horizontal transmission pipe 117 to the rear part of the vertical transmission pipe 112.

  Thus, the cutting frame 110 includes the cutting input pipe 111, the vertical transmission pipe 112, the horizontal transmission pipe 113, the plurality of weed frames 114, the left and right pulling vertical transmission pipes 116, the pulling horizontal transmission pipe 117, and the plural The pulling drive pipe 118 and the connecting frame 119 are integrally connected.

  The cutting tool 21, the pulling device 22, the cutting device 23, the conveying device 24, and the like are appropriately supported on the mowing frame 110. When supported by the cutting frame 110, the weeding tool 21, the pulling device 22, and the transport device 24 are arranged from the front to the back in this order, and the cutting device 23 is transported behind the pulling device 22. It arrange | positions under the conveyance start end part of the apparatus 24. FIG.

  As shown in FIG. 3, the weeding tool 21 is provided with five weeding plates 211 for four strips. Each of the weed boards 211 has a tapered shape, and protrudes forward from the front ends of a plurality of weed frames 114, that is, left and right outer weed frames 114A and three inner weed frames 114B.

  The pulling device 22 is provided with four pulling cases 221 for four lines. Each pulling case 221 includes a chain 222 with tines and the like, and is configured to be able to rotate these. These pulling cases 221 are arranged behind the weeding tool 21 with appropriate intervals in the left-right direction, and are inclined in the front, rear, and rear height between the plurality of weeding frames 114 and the plurality of pulling drive pipes 118. Established.

  The transport device 24 includes a scraping mechanism 241 and a transport mechanism 245. The take-in mechanism 241 is disposed on the front side of the transfer device 24 and is provided to be a transfer start end portion of the transfer device 24. On the other hand, the transport mechanism 245 is disposed on the rear side of the transport device 24 and is provided so as to be a transport intermediate portion and a transport end portion of the transport device 24.

  The take-in mechanism 241 includes left and right take-in devices 242L and 242R and four take-in wheels 243. The left and right scratching devices 242L and 242R each have a pair of left and right protruding belts and the like, and are configured to be able to rotate these. The left and right scratching devices 242L and 242R are respectively arranged behind the pulling case 221 and extend in a slanted shape with front and rear and rear height from the pulling case 221 side toward the rear.

  The left and right scraping devices 242L and 242R are also arranged so that a pair of left and right protruding belts are largely opened forward toward the left or right two pulling cases 221. That is, the left and right scraping devices 242L and 242R are arranged such that the left and right widths on the front side of the two pulling cases 221 are widened and the left and right widths on the rear side are narrowed.

  Each of the four scraping wheels 243 is a star wheel, and is configured to be rotationally driven. Each of the scraping wheels 243 is disposed below the rear part of each protrusion-equipped belt of the left and right scratching devices 242L and 242R, and is provided in an inclined shape with a front, a rear, and a height.

  The transport mechanism 245 includes left and right lower transport devices 246L and 246R, an upper transport device 247, a vertical transport device 248, and an auxiliary transport device 249. Each transport device includes a chain and the like, and is configured to be able to rotate these.

  The lower left conveying device 246L is disposed behind the left scratching device 242L, and extends in a slanted shape with a front low and a rear height from the left scratching device 242L side toward the right diagonal rear. The lower right transfer device 246R is disposed behind the right scratching device 242R, and extends in a slanted shape with a front low and a rear height from the right scratching device 242R side toward the left diagonal rear.

  The upper transport device 247 is disposed behind the pulling device 22 and above the lower right transport device 246R, and extends in a slanted shape with front, rear, and rear heights from the right scratching device 242R side toward the left oblique rear. The The vertical transfer device 248 is disposed behind the lower left transfer device 246L and below the upper transfer device 247, and extends in a slanted shape with a front, rear, and rear height from the left lower transfer device 246L toward the left oblique rear. Is done. The auxiliary conveyance device 249 is disposed behind the vertical conveyance device 248 and below the upper conveyance device 247, and extends from the vertical conveyance device 248 side to the conveyance device 31 of the threshing unit 30 toward the rear.

  The cutting device 23 includes a plurality of disk-shaped cutting blades 231, a disk-shaped auxiliary cutting blade 232, a drive actuator 233, and the like. As will be described later, the plurality of cutting blades 231 and the auxiliary cutting blades 232 are disposed below the scraping mechanism 241 and are provided in an inclined shape with front and rear and rear heights. The drive actuator 233 is disposed in the vicinity of the cutting blade 231 and the auxiliary cutting blade 232 and is interlocked and connected to the cutting blade 231 and the auxiliary cutting blade 232.

  Further, in the cutting frame 110 that supports the weeding tool 21 and each device, the cutting input shaft 121 is inserted into the cutting input pipe 111, and the cutting transmission shaft is inserted into the other pipes. . Then, the pulling device 22 and the conveying device 24 are interlocked and connected to the engine of the engine unit 70 via each cutting transmission shaft, cutting input shaft, and the like.

  Thus, the pulling device 22 and the conveying device 24 are configured so as to be able to obtain and drive power supplied from the engine of the engine unit 70 as a driving source. Further, the cutting device 23 is configured to be driven independently using the power of the drive actuator 233 as a drive source, in other words, to be driven independently from the engine.

  With such a configuration, when each device is driven in the reaping unit 20, the weed plate 211 of the weeding tool 21 is weeded so that the cereals in the field are separated for each line, and then the pulling device 22, the raising case 221 causes cereals after weeding. Subsequently, the left and right two strips after pulling are introduced from between the left and right pulling cases 221 by the left and right scratching devices 242L and 242R and the scraping wheel 243 by the scraping mechanism 241 of the transport device 24, respectively. The cereal side of the cereals is raked into a bunch.

  At this time, the cereal after moving is cut by the cutting device 23 by the cutting blade 231 and the auxiliary cutting blade 232 on the stock side. After being cut, the cereals are transported by the transport mechanism 245 of the transporting device 24, and the right lower strips of cereals are transported to the left diagonally by the lower right transport device 246R. The straw is transported to the right oblique rear, and the stock base side of the four grain cereals is joined in the vicinity of the transport end portion of the lower right transport device 246R.

  Next, the upper transport device 247 transported the left side of the stalks of the stalks to the left obliquely while being gathered together, and the vertical transport device 248 joined the vicinity of the transport end portion of the lower right transport device 246R. The stock side of the stalks of the four stalks is transported obliquely upward toward the transport device 31 of the threshing unit 30, and the stock side of the cereals is transferred from the vertical transport device 248 to the transport device 31 of the threshing unit 30 by the auxiliary transport device 249. Passed. In this way, a series of cutting operations for the cereals are performed in the cutting unit 20.

  In such a cutting part 20, the cutting frame 110 connects the front and rear halfway part of the longitudinal transmission pipe 112 to the front end part of the elevating cylinder 5 extending forward from the front lower part of the body frame 2. It is configured to be able to turn up and down around the cutting input pipe 111 according to the expansion and contraction drive of the lifting cylinder 5. The elevating cylinder 5 can be extended and retracted according to manual operation of the operation tool of the control unit 90.

  When the elevating cylinder 5 is driven to extend and contract, the mowing frame 110 is rotated upward around the mowing input pipe 111 when the elevating cylinder 5 is driven to extend, and is lowered around the mowing input pipe 111 when the elevating cylinder 5 is driven to contract. Is rotated. Thereby, the whole cutting part 20 is raised with respect to the body when the cutting frame 110 is rotated upward, and is lowered with respect to the body when the cutting frame 110 is rotated downward.

  Next, the configuration in the vicinity of the cutting device 23 that is a main part of the present invention will be described. In addition, in this embodiment, although the cutting device is provided with an auxiliary cutting blade together with a plurality of cutting blades, it may be provided with only a plurality of cutting blades without providing the auxiliary cutting blade.

  As shown in FIG. 4 and FIG. 5, the cutting device 23 includes a plurality of cutting blades 231 having the same number as the number of ridges of the culm caused by the pulling device 22, that is, the number of reaping lines of the culm to be harvested, and one auxiliary cutting. A blade 232, a drive actuator 233, a drive case 234, and the like are provided. In this embodiment, since the number of cutting lines is four, the cutting device 23 includes four cutting blades 231A, a second cutting blade 231B, a third cutting blade 231C, and a fourth cutting blade 231D. Two cutting blades 231 are provided.

  The first to fourth cutting blades 231A to 231D are each formed into a disk shape having a predetermined width, and have the same shape. The auxiliary cutting blade 232 is formed in a disk shape like the cutting blade 231, and has a smaller diameter than the first to fourth cutting blades 231A to 231D. The first to fourth cutting blades 231A to 231D and the auxiliary cutting blade 232 are configured to have a blade portion at the outer peripheral edge portion and a fixing portion at the center portion.

  In addition, the diameter of the 1st-4th cutting blades 231A-231D is set to the extent which can cut | disconnect one grain of cereals. On the other hand, the diameter of the auxiliary cutting blade 232 is appropriately set according to the cutting width of the cutting device 23 within a range smaller than the diameters of the first to fourth cutting blades 231A to 231D. Actually, the auxiliary cutting blade 232 is used after being changed to one having an appropriate diameter according to the cutting width of the cutting device 23.

  The first to fourth cutting blades 231A to 231D and the auxiliary cutting blade 232 are disposed in front of the horizontal transmission pipe 113 and between the left and right outer weed frames 114A in this order from left to right. . Here, the first to fourth cutting blades 231A to 231D are arranged on the same plane and on the same straight line in the left-right direction. The auxiliary cutting blade 232 is substantially the same plane as the first to fourth cutting blades 231A to 231D, and among the plurality of cutting blades 231, one of the left and right (right) fourth cutting blades 231D. Lined up outward.

  Among the plurality of cutting blades 231, the first cutting blade 231A positioned on the outermost side of the other side (left side) is such that the left end portion of the blade portion is positioned immediately inside the left outer weed frame 114A in plan view. Be placed. The second cutting blade 231B is disposed between the adjacent inner weed frames 114B so that the left and right ends of the blade portion slightly overlap the inner weed frames 114B in plan view. The third cutting blade 231C is disposed between the adjacent inner weed frames 114B so that the left and right ends of the blade portion slightly overlap with the inner weed frames 114B in plan view.

  The fourth cutting blade 231D is arranged immediately outside the inner weed frame 114B so that the left end of the blade part slightly overlaps the inner weed frame 114B in plan view. The auxiliary cutting blade 232 is arranged so that the right end portion of the blade portion is located immediately inside the right outer weed frame 114A in plan view. That is, the fourth cutting blade 231D and the auxiliary cutting blade 232 are both disposed between the adjacent inner weed frame 114B and the outer weed frame 114A.

  Among these cutting blades 231, adjacent cutting blades 231 do not overlap each other and are arranged with a predetermined width in the left-right direction in advance. Specifically, the first cutting blade 231A, the second cutting blade 231B, the second cutting blade 231B, the third cutting blade 231C, the third cutting blade 231C, and the fourth cutting blade 231D are respectively inside each other. The width of the weeding frame 114B is approximately the same as the width of the weeding frame 114B.

  On the other hand, the adjacent auxiliary cutting blade 232 and the fourth cutting blade 231D are disposed so as to partially overlap each other. Thus, the first to fourth cutting blades 231A to 231D and the left outer weeding frame 114A or the inner weeding frame 114B are arranged so that there is no gap between them in plan view, and the auxiliary cutting blade 232, the right outer weed frame 114A, and the fourth cutting blade 231D are arranged such that no gap is generated between them in plan view.

  Here, as described above, the auxiliary cutting blade 232 is set such that the left-right width between the inner weed frame 114B and the right outer weed frame 114A is larger than the left-right width between the other weed frames 114. Therefore, the fourth cutting blade 231D adjacent to the inner weed frame 114B and the right outer weed frame 114A are arranged so as to partially overlap each other.

  In addition, the first to fourth cutting blades 231A to 231D are respectively arranged almost directly below the respective scraping wheels 243 provided in the scraping mechanism 241 of the transport device 24, the pulling device 22 side is lowered, and the threshing portion The side 30 is higher, that is, it is provided in an inclined shape with a front low and a high rear. In this way, both the scraping wheel 243 and the first to fourth cutting blades 231A to 231D are provided in an inclined shape of front, rear, and rear height, and are arranged vertically with different degrees of inclination, that is, not parallel to each other.

  The degree of inclination of each of the first to fourth cutting blades 231A to 231D with respect to the horizontal ground is set more gently than the degree of inclination of each of the scraping wheels 243 with respect to the horizontal ground. In other words, the degree of inclination of each of the first to fourth cutting blades 231A to 231D with respect to the horizontal ground is greater than that of each of the stirring wheels 243 to the horizontal ground than each of the first to fourth cutting blades 231A to 231D. It is set to tilt.

  In addition, the degree of inclination of each of the first to fourth cutting blades 231A to 231D is determined based on the threshing portion 30 of the first to fourth cutting blades 231A to 231D when the lateral transmission pipe 113 of the cutting frame 110 disposed behind the first to fourth cutting blades 231A to 231D is viewed from the side. It is set so as to be positioned below the extension line to the side. Note that the degree of inclination of the plurality of scraping wheels 243 is set to be the same.

  Moreover, the auxiliary cutting blade 232 is arrange | positioned in the lower right of the right picking wheel 243 located in the outermost side among the some picking wheels 243, and is similar to the first to fourth cutting blades 231A to 231D. Provided with a high slope. The inclination degree of the auxiliary cutting blade 232 is set to the same degree as the inclination degrees of the first to fourth cutting blades 231A to 231D.

  The auxiliary cutting blade 232 is further forward on the right outside of the front portion of the fourth cutting blade 231D so that the front end side of the blade portion is aligned with the front end side of the blade portions of the fourth cutting blades 231A to 231D from the first to the left and right. Arranged closer. Accordingly, the drive actuator having a size that allows the drive actuator 233 to be installed behind the auxiliary cutting blade 232 and on the right outer side of the rear portion of the fourth cutting blade 231D, that is, on the right rear portion of the cutting device 23. An installation space 235 is formed.

  As shown in FIGS. 6 and 7, the drive actuator 233 is provided in the drive actuator installation space 235. The drive actuator 233 is an electric motor, a hydraulic motor, or the like, and supplies power to the first to fourth cutting blades 231A to 231D and the auxiliary cutting blade 232 via a transmission mechanism so that these can be rotationally driven. Composed.

  The drive actuator 233 is driven and controlled by a control means such as a controller provided at an arbitrary position of the machine body including the cutting unit 20. This control means is connected to the drive actuator 233 and is also detected from an operation tool of the control unit 90, a detection means for detecting the driving state of the pulling device 22 and the conveying device 24 of the cutting unit 20, for example, from the engine of the engine unit 70 The reaping unit 20 is connected to a reaping clutch detection sensor that detects an on / off state of the reaping clutch that switches power supply to the pulling device 22 and the conveying device 24.

  The drive actuator 233 is driven in the forward direction, driven in the reverse direction, or stopped according to the manual operation of the operation tool of the control unit 90 by the control means. It is controlled to become. Alternatively, the drive actuator 233 is driven in conjunction with the pulling device 22 and the conveying device 24 according to the driving state of the pulling device 22 and the conveying device 24 of the cutting unit 20 detected by the detecting unit by the control unit. It is automatically controlled so as to be in one state of driving or stopping as appropriate.

  Note that the drive actuator can be configured not only to be electrically driven and controlled by the control means but also to be mechanically driven and controlled. For example, when the drive actuator is a hydraulic motor, a switching valve is provided in the middle of a pipe connecting the hydraulic motor and a hydraulic pump that sends hydraulic oil to the hydraulic motor. By interlockingly coupling the clutches, it is possible to control the driving state of the actuator as described above.

  The drive actuator 233 is disposed between the lateral transmission pipe 113 and the drive case 234 in the drive actuator installation space 235 and is not coupled to the lateral transmission pipe 113 but is coupled to and supported by the drive case 234. The drive case 234 is disposed forward and obliquely below the horizontal transmission pipe 113, and is horizontally provided in the horizontal direction between the left and right outer weed frames 114 </ b> A and in parallel with the horizontal transmission pipe 113.

  In addition, the drive case 234 is disposed so as to pass below the first to fourth cutting blades 231A to 231D and the auxiliary cutting blade 232, particularly in the vicinity of the lower portion of these fixed portions, and the left and right end portions are respectively left and right. It is located above the outer weeding frame 114A and in front of the rear part of the front, rear, rear, and height inclined so as not to contact the outer weeding frame 114A.

  The drive case 234 has a hollow first extending portion 234b, a plurality of hollow second extending portions 234c, and a third extending portion with respect to a hollow case body 234a extending in the left-right direction. Part 234d. In addition, the drive case 234 is supported by the left and right outer weeding frames 114 </ b> A that are part of the cutting frame 110 via the moving unit 250 as will be described later.

  The first extending portion 234b extends in the front-rear and rear-high shape from the right side of the case main body 234a to the front and rear in the vicinity of the lower side of the auxiliary cutting blade 232. The first extending portion 234b extends forward so that the front end portion does not protrude below the blade portion through the lower portion of the auxiliary cutting blade 232, while the rear end portion protrudes beyond the blade portion. Thus, it extends rearward and is connected to the drive actuator 233 at the rear end.

  The plurality of second extending portions 234c are disposed below the fixing portions of the first to fourth cutting blades 231A to 231D and the auxiliary cutting blade 232, respectively. Of these second extending portions 234c, four second extending portions 234c are respectively located in the middle of the left and right sides of the case body 234a, and one second extending portion 234c is inclined forward and obliquely from the first extending portion 234b. The first to fourth cutting blades 231 </ b> A to 231 </ b> D and the auxiliary cutting blade 232 are extended toward the immediate front.

  The third extending portion 234d extends in the front-rear and rear-high shape from the left side of the case body 234a toward the front and rear in the vicinity of the lower portion of the first cutting blade 231A. The third extending portion 234d extends rearward and in front of the lateral transmission pipe 113 so that the rear end portion protrudes from the blade portion of the first cutting blade 231A.

  And in such a drive case 234, the transmission mechanism of the cutting device 23 is provided in the case main body 234a, the 1st extension part 234b, and the some 2nd extension part 234c. The transmission mechanism includes a vertical drive shaft 236, a horizontal drive shaft 237, a plurality of rotary drive shafts 238, a plurality of bevel gears, and the like.

  The vertical drive shaft 236 is disposed inside the first extension portion 234b and extends from the drive actuator 233 toward the front lower side so as to pass below the fixed portion of the auxiliary cutting blade 232. The vertical drive shaft 236 is rotatably supported by the first extending portion 234b via a bearing at an appropriate position in the front-rear direction, and is linked to the output shaft of the drive actuator 233. The vertical drive shaft 236 can also serve as the output shaft of the drive actuator 233.

  The lateral drive shaft 237 is disposed inside the case main body 234a, and extends from the middle of the vertical drive shaft 236 to the left so as to pass below the fixed portion of the first to fourth cutting blades 231A to 231D. . The horizontal drive shaft 237 is rotatably supported by the case main body 234a via a bearing at an appropriate position in the left-right direction, and is linked to the vertical drive shaft 236 via a bevel gear.

  The plurality of rotational drive shafts 238 are respectively disposed inside the second extending portion 234c, and are directed from the first to fourth cutting blades 231A to 231D upward from the middle portion of the horizontal drive shaft 237 or the vertical drive shaft 236, and It extends to the fixed part of the auxiliary cutting blade 232. The plurality of rotary drive shafts 238 are rotatably supported by the second extending portion 234c via bearings at appropriate locations in the vertical direction, and the rotary drive shafts on the first to fourth cutting blades 231A to 231D side. 238 is coupled to the lateral drive shaft 237 via a bevel gear, and the rotary drive shaft 238 on the auxiliary cutting blade 232 side is coupled to the longitudinal drive shaft 236 via a bevel gear.

  The first to fourth cutting blades 231A to 231D are positioned on the back side of the first to fourth cutting blades 231A to 231D at the fixed portion so that the first to fourth cutting blades 231A to 231D are orthogonal to the axial direction of the rotation drive shaft 238 in a side view. The rotary drive shaft 238 is fixed to the tip of the rotary drive shaft 238. Similarly, the auxiliary cutting blade 232 is fixed to the distal end portion of the rotary drive shaft 238 located on the back side of the auxiliary cutting blade 232 at the fixed portion so that the auxiliary cutting blade 232 is orthogonal to the axial center direction of the rotary drive shaft 238 in a side view. Is done.

  Thus, the drive actuator 233 is interlocked and connected to the first to fourth cutting blades 231A to 231D by the vertical drive shaft 236, the horizontal drive shaft 237, the plurality of rotary drive shafts 238, and the like. The drive actuator 233 is further coupled to the auxiliary cutting blade 232 by a vertical drive shaft 236, a rotary drive shaft 238, and the like.

  Therefore, when the drive actuator 233 is driven based on the drive control of the control means, power is transmitted from the drive actuator 233 to the first to fourth cutting blades 231A to 231D and the auxiliary cutting blade 232 via the transmission mechanism. The first to fourth cutting blades 231A to 231D and the auxiliary cutting blade 232 are driven to rotate about the rotation drive shaft 238 as the center of rotation.

  The rotational speeds of the first to fourth cutting blades 231A to 231D and the auxiliary cutting blade 232 at the time of rotational driving can be arbitrarily adjusted by appropriately controlling the driving actuator 233 by the control means, and each is constant. Are set so as to have the same rotation speed. Note that the rotation speed of the first to fourth cutting blades 231A to 231D may be set to be faster than the rotation speed of the auxiliary cutting blade 232.

  The rotation directions of the first to fourth cutting blades 231A to 231D are set by the transmission mechanism so that the rotation directions of the adjacent cutting blades 231 are different from each other. Specifically, the rotation directions of the first to fourth cutting blades 231A to 231D are the first cutting blade 231A and the second cutting blade 231B, the second cutting blade 231B and the third cutting blade 231C, and the third cutting blade 231C. The rotation directions with the fourth cutting blade 231D are set to be different from each other.

  The rotation direction of the auxiliary cutting blade 232 is set to be the same rotation direction as the rotation direction of the adjacent cutting blades 231. Specifically, the rotation direction of the auxiliary cutting blade 232 is set by the transmission mechanism so as to be the same rotation direction as the rotation direction of the fourth cutting blade 231D.

  In the present embodiment, the rotation directions of the first cutting blade 231A and the third cutting blade 231C are set in the clockwise direction in FIG. 4, and the rotation directions of the second cutting blade 231B and the fourth cutting blade 231D are as shown in FIG. 4 is set in the counterclockwise direction. The rotation direction of the auxiliary cutting blade 232 is set in the counterclockwise direction in FIG. 4 as with the fourth cutting blade 231D.

  Therefore, when the first to fourth cutting blades 231A to 231D and the auxiliary cutting blade 232 are rotationally driven, the first cutting blade 231A and the second cutting blade 231B have the same rotation direction as the upper scraping wheel 243, respectively. That is, it is driven to rotate in the direction in which the take-in wheel 243 and the left take-in device 242L are taken. The third cutting blade 231C and the fourth cutting blade 231D are driven to rotate in the same rotational direction as the upper picking wheel 243, that is, the picking direction of the picking wheel 243 and the right picking device 242R.

  On the other hand, the auxiliary cutting blade 232 is rotationally driven in the same rotational direction as the fourth cutting blade 231D and the above-described scraping wheel 243, that is, the scraping direction of the scraping wheel 243 and the right scraping device 242R.

  Note that the rotation directions of the first to fourth cutting blades 231A to 231D and the auxiliary cutting blade 232 can be switched to rotation directions opposite to those described above. The switching of the rotation direction is controlled by the control means so that the drive actuator 233 is driven in the forward rotation direction or the reverse rotation direction which is the reverse rotation direction to the previous one by operating the operation tool of the control unit 90 or the like. Done.

  With such a configuration, in the vicinity of the cutting device 23, when the pulling device 22 and the transport device 24 are driven, the cutting device 23 is also driven simultaneously. That is, power is transmitted from the drive actuator 233 to the first to fourth cutting blades 231A to 231D and the auxiliary cutting blade 232, and the first to fourth cutting blades 231A to 231D and the auxiliary cutting blade 232 are set as described above. It is rotationally driven at the rotational speed and rotational direction.

  Then, the left and right cereal grains caused after weeding are scraped backwards by the left and right scratching devices 242L and 242R and the scraping wheels 243 of the transport mechanism, while the left and right outer sides are respectively separated by one line. Passing between the weeding frame 114A and the inner weeding frame 114B, or between the inner weeding frames 114B, the first to fourth cutting blades 231A to 231D and the auxiliary cutting blade 232 side by each weeding frame 114. You will be guided towards.

  When the cereal for each line is guided by each weed frame 114 and reaches the fourth cutting blades 231A to 231D and the auxiliary cutting blade 232 from the first, each cereal is left-side weed frame on the stock side. 114 A and the inner weed frame 114 B are cut by the first cutting blade 231 A, and the inner weed frames 114 B are cut by the second cutting blade 231 B and the third cutting blade 231 C, respectively. Further, the fourth cutting blade 231D and the auxiliary cutting blade 232 are cut between the inner weed frame 114B and the right outer weed frame 114A.

  At this time, the cereals are cut while being sent in the scooping direction of the scoring wheel 243 and the left and right scoring devices 242L and 242R by the first to fourth cutting blades 231A to 231D and the auxiliary cutting blade 232, and The left and right two strips are further raked into a bundle by the respective scraping devices 242L and 242R and the scraping wheel 243. Then, as described above, the sheet is conveyed rearward by the left and right lower transfer devices 246L and 246R of the transfer mechanism 245. In this way, the work near the cutting device 23 is performed.

  In addition to the plurality of cutting blades 231, one auxiliary cutting blade 232, the drive actuator 233, and the drive case 234, the cutting device 23 configured in this way is provided with a moving means 250. As shown in FIGS. 4 to 9, the moving means 250 includes left and right support plates 260, left and right first links 261, left and right second links 262, an operating rod 263, and a holding member. .

  The left and right support plates 260 are each formed of a substantially trapezoidal plate-like member, and are erected from the rear part of the left and right outer weed frames 114A toward the front upper side in accordance with the inclination thereof. Each support plate 260 is fixed to the outer weeding frame 114A at one side, and the front corner 260a of the front and rear corners 260a and 260b facing the one side is a stir ring in a side view of the cutting unit 20. The rear corner portion 260b is disposed so as to be located below the rear portion of the vertical transmission pipe 116 above the front corner portion 260a.

  The left and right first links 261 are each composed of a bar plate-like member, and are interposed between the drive case 234 and the support plate 260. Each first link 261 is connected at one end to the left or right end of the case body 234a of the drive case 234 by a first support shaft 271 located on the axis of the lateral drive shaft 237. It can be rotated around the shaft 271. Each first link 261 is arranged such that the other end portion is positioned vertically above one end portion, and is connected to the front corner portion 260a of the support plate 260 by the second support shaft 272 at the other end portion. The second support shaft 272 can be rotated.

  The left and right second links 262 are each composed of a bar plate-like member, and are interposed between the drive actuator 233 and the support plate 260. Each of the second links 262 is connected to the rear portion of the drive actuator 233 at one end by a third support shaft 273 and is rotatable about the third support shaft 273. And each 2nd link 262 is arranged so that the other end may be located above one end, and is connected to the rear corner 260b of the support plate 260 at the other end by the fourth support shaft 274, The fourth support shaft 274 can be turned around.

  In addition, only the right second link 262 is provided with an extending part 262a extending rearward from the other end part. The fourth support shaft 274 is rotated in accordance with the rotation of the second link 262 in a range in which the second link 262 is set to be rotatable around the fourth support shaft 274 in a side view of the cutting unit 20. 10 on the vertical bisector of a straight line connecting the axis of the third support shaft 273 when it is the foremost position P2 and the axis of the third support shaft 273 when it is the last position P1 in FIG. It is arranged to be located. Further, the first link 261 and the second link 262 are arranged substantially in parallel and are configured to form a substantially parallel link.

  The operation rod 263 is formed of a round bar-like member, and the second link 262 including one extending portion 262a of the left and right second links 262, that is, the right second link 262 to an arbitrary position of the cutting unit 20 is moved upward. It is provided to extend. The operating rod 263 is connected to the extending portion 262a of the second link 262 at one end by a fifth support shaft 275, and can be rotated around the fifth support shaft 275. The operation rod 263 is movable up and down and front and rear.

  The holding member is provided in the vicinity of the other end portion of the operating rod 263 so that the operating rod 263 can be manually or automatically held at an arbitrary position of the moving destination when the operating rod 263 is moved in the vertical direction and the front-rear direction. Composed. However, the holding member is not particularly limited as long as it acts on the operation rod in the same manner as in the present embodiment.

  For example, as shown in FIG. 11A, the holding member includes a plate-shaped guide 264 having a guide groove 264a and a plurality of engagement grooves 264b, and is provided in the vicinity of the other end of the operation rod 263. The guide 264 is attached to an arbitrary position of the cutting frame 110 on the upper right side of the cutting device 23. In the guide 264, the guide groove 264a is opened toward the right outer side and extends in the vertical direction. On the other hand, the plurality of engaging grooves 264b are opened at predetermined intervals in the vertical direction facing the right outer side, extend in the front-rear direction, and communicate with the guide groove 264a at one end thereof. The front-rear width of the guide groove 264 a and the vertical width of each engagement groove 264 b are set to be slightly larger than the diameter of the operation rod 263.

  When the guide 264 is used as the holding member, the operation rod 263 is bent at a substantially right angle while being extended upward from the second link 262, and the other end portion is extended to the right outer side and is gripped by the extension destination. It is configured to have a member 276. The other end of the operating rod 263 is penetrated by the guide groove 264a of the guide 264 and can be moved in the vertical direction along the guide groove 264a, and is selected by moving to one of the engagement grooves 264b. Can be engaged. Here, the operation rod 263 is biased by a biasing member 277 such as a spring in a direction in which the other end portion maintains the engagement with the engagement groove 264b.

  With such a configuration, for example, when the other end portion of the operating rod 263 is engaged with the uppermost engaging groove 264b of the guide 264, the cutting device 23 is held at the last position P1, as shown in FIG. Is done. In this state, the operation of the operation rod 263 using the gripping member 276 releases the engagement between the other end of the operation rod 263 and the engagement groove 264b of the guide 264, and the other end of the operation rod 263 becomes a guide groove. When the second link 262 is moved downward along the H.264a, the second link 262 is rotated about the fourth support shaft 274 in the counterclockwise direction in FIG. The drive actuator 233 connected at is moved forward.

  Due to the forward movement of the drive actuator 233, the drive case 234 is moved forward. At this time, the first link 261 connected to the drive case 234 and the first support shaft 271 is rotated counterclockwise in FIG. 8 around the second support shaft 272, and the drive case 234 moves substantially horizontally. Is done. When the other end of the operating rod 263 is engaged with another engaging groove 264b below the previous one of the guide 264, the drive case 234 is moved forward by a predetermined amount of movement. Retained. The drive case 234 is held at a more forward position as the other end of the operating rod 263 is engaged with the lower engaging groove 264b.

  When the other end portion of the operating rod 263 is engaged with the engaging groove 264b at the lowest position of the guide 264, the cutting device 23 is held at the foremost position P2, as shown in FIG. In this state, the operation of the operation rod 263 using the gripping member 276 releases the engagement between the other end of the operation rod 263 and the engagement groove 264b of the guide 264, and the other end of the operation rod 263 becomes a guide groove. When the second link 262 is moved upward along the H.264a, the second link 262 is rotated around the fourth support shaft 274 in the clockwise direction in FIG. The drive actuator 233 connected in this manner is moved backward.

  Due to the backward movement of the drive actuator 233, the drive case 234 is moved backward. At this time, the first link 261 connected to the drive case 234 and the first support shaft 271 is rotated around the second support shaft 272 in the clockwise direction in FIG. 10, and the drive case 234 is moved substantially horizontally. The When the other end of the operation rod 263 is engaged with another engagement groove 264b above the previous one of the guide 264, the drive case 234 is moved backward by a predetermined movement amount. Retained. The drive case 234 is held at a more rearward position as the other end of the operating rod 263 is engaged with the upper engagement groove 264b.

  Accordingly, since the plurality of cutting blades 231 and the auxiliary cutting blade 232 are supported by the drive case 234, when the operation rod 263 is operated as described above by the moving means 250, the drive case 234 is integrated. The cutting frame 110 is moved by a predetermined amount of movement substantially horizontally in the front-rear direction with respect to the cutting frame 110, and consequently the conveying device 24 including the scraping wheel 243 on the cutting frame 110, and is held at an arbitrary position of the moving destination. As a result, in the cutting device 23, the cutting timing of the culm is changed without changing the cutting height of the cereal.

  Further, as shown in FIG. 11B, the holding member can be constituted by a moving actuator 265 made of an electric motor, a cylinder, or the like. In this case, the moving actuator 265 is an electric motor and is provided in the vicinity of the other end of the operation rod 263. The moving actuator 265 is attached to an arbitrary position of the cutting frame 110 on the upper right side of the cutting device 23, and is disposed so that the output shaft 265a is located on the same axis as the operation rod 263 and protrudes downward. A screw rod 266 is fixed to the projecting end portion of the output shaft 265a so as to be positioned on the axis of the output shaft 265a, and can be rotated or stopped integrally with the output shaft 265a when the moving actuator 265 is driven. Is done.

  When the movement actuator 265 is used as the holding member, the operation rod 263 is configured to have a screw hole 263a extending along the axial direction of the operation rod 263 at the other end. Then, the screw rod 266 on the moving actuator 265 side is screwed into the screw hole 263a. Thus, when the screw rod 266 is rotated together with the output shaft 265 a, the other end portion of the operation rod 263 including the screw hole 263 a is movable along the screw rod 266.

  The moving actuator 265 is driven and controlled by a control means 6 such as a controller provided at an arbitrary position of the machine body including the cutting unit 20. As shown in FIG. 12, the control means 6 is connected to the moving actuator 265 and also connected to the vehicle speed detection means 12 such as a vehicle speed detection sensor for detecting the vehicle speed of the combine 1. Note that the control means for driving and controlling the moving actuator can be the same as the control means for driving and controlling the driving actuator, or can be separate.

  The moving actuator 265 is in a state where the driving state is either the driving in the forward direction, the driving in the reverse direction, or the stop according to the vehicle speed detected by the vehicle speed detecting unit 12 by the control unit 6. Thus, it is possible to control the driving appropriately.

  Specifically, for example, when the vehicle speed exceeds a preset first vehicle speed, the movement actuator 265 is driven in the forward rotation direction (reverse rotation direction) by a predetermined drive amount, and then, after the first vehicle speed, The vehicle is stopped until the second vehicle speed set at a high value is reached. In this stopped state, when the vehicle speed becomes higher than the second vehicle speed, the movement actuator 265 is driven in the forward rotation direction (reverse rotation direction) by a predetermined drive amount, and then set in advance next to the second vehicle speed. It is stopped until the third vehicle speed is reached.

  On the other hand, when the vehicle speed becomes lower than the preset third vehicle speed, the movement actuator 265 is driven in the reverse rotation direction (forward rotation direction) by a predetermined drive amount, and then set to the next lower value than the third vehicle speed in advance. Until the second vehicle speed is reached. In this stopped state, when the moving actuator 265 becomes lower than the second vehicle speed, the moving actuator 265 is driven in the reverse rotation direction (forward rotation direction) by a predetermined drive amount, and thereafter, the first is set in advance next to the third vehicle speed. It is stopped until the vehicle speed is reached.

  With such a configuration, when the combine 1 is traveling at a vehicle speed equal to or lower than the first vehicle speed, as shown in FIG. 8, when the drive case 234 is held at the last position P1, the vehicle speed is increased. When the vehicle speed exceeds the first vehicle speed, the moving actuator 265 is driven in the forward rotation direction (reverse rotation direction) by a predetermined drive amount, the screw rod 266 is rotated together with the output shaft 265a, and the operation rod 263 is moved downward. Due to the downward movement of the operation rod 263, the second link 262 is rotated in the counterclockwise direction in FIG. 8 around the fourth support shaft 274, and the third support shaft 273 is formed at one end of the second link 262. The drive actuator 233 connected at is moved forward.

  As the moving actuator 265 moves forward, the drive case 234 is moved forward. At this time, the first link 261 connected to the drive case 234 and the first support shaft 271 is rotated counterclockwise in FIG. 8 around the second support shaft 272, and the drive case 234 moves substantially horizontally. Is done. Then, the movement actuator 265 is driven in the forward rotation direction (reverse rotation direction) by a predetermined drive amount and then stopped, and the operation rod 263 connected to the movement actuator 265 through the screw rod 266 and the screw hole 263a is also stopped. The drive case 234 is held at a position moved forward by a predetermined amount of movement.

  Then, after the vehicle speed exceeds the first vehicle speed, when the vehicle speed is further increased and exceeds the second vehicle speed, the drive control of the movement actuator 265 is performed in the same manner as described above, and the drive case 234 is moved forward by a predetermined movement amount. It is held at the moved position. Subsequently, when the vehicle speed exceeds the second vehicle speed and is further increased to exceed the third vehicle speed, the drive control of the movement actuator 265 is performed in the same manner as described above, and the drive case 234 moves forward by a predetermined amount of movement. The position is moved to the position P2, that is, the foremost position P2 in FIG.

  Further, when the combine 1 is traveling at a vehicle speed exceeding the third vehicle speed, as shown in FIG. 10, when the drive case 234 is held at the foremost position P2, the vehicle speed is decelerated to be equal to or lower than the third vehicle speed. Then, the moving actuator 265 is driven in the reverse direction (forward direction) by a predetermined drive amount, the screw rod 266 is rotated together with the output shaft 265a, and the operation rod 263 is moved upward. Due to the upward movement of the operating rod 263, the second link 262 is rotated in the clockwise direction in FIG. 10 around the fourth support shaft 274, and one end of the second link 262 is moved to the third support shaft 273. The drive actuator 233 connected in this manner is moved rearward.

  As the moving actuator 265 moves rearward, the drive case 234 is moved rearward. At this time, the first link 261 connected to the drive case 234 and the first support shaft 271 is rotated about the second support shaft 272 in the clockwise direction in FIG. 10, and the drive case 234 is moved substantially horizontally. The Then, the movement actuator 265 is driven in the reverse rotation direction (forward rotation direction) by a predetermined drive amount and then stopped, and the operation rod 263 connected to the movement actuator 265 through the screw rod 266 and the screw hole 263a is also stopped. The drive case 234 is held at a position moved backward by a predetermined amount of movement.

  When the vehicle speed is reduced to the third vehicle speed or less and then further decelerated to the second vehicle speed or less, the drive control of the movement actuator 265 is performed in the same manner as described above, and the drive case 234 moves backward by a predetermined movement amount. Held in the position. Subsequently, when the vehicle speed becomes equal to or lower than the second vehicle speed and then further decelerated to become equal to or lower than the first vehicle speed, the drive control of the movement actuator 265 is performed in the same manner as described above, and the drive case 234 is controlled by the predetermined movement amount. The position moved rearward, that is, the last position P1 in FIG. 8 is held.

  In the present embodiment, the vehicle speed set in advance for performing drive control of the moving actuator is set to three vehicle speeds of the first vehicle speed, the second vehicle speed, and the third vehicle speed for convenience. It is possible to set a plurality of vehicle speeds. Further, the predetermined drive amount in the forward rotation direction or the reverse rotation direction of the moving actuator driven according to the vehicle speed can also be arbitrarily set according to the preset number of steps of the vehicle speed.

  Accordingly, since the plurality of cutting blades 231 and the auxiliary cutting blades 232 are supported by the drive case 234, the moving actuator 265 is detected by the moving means 250 according to the vehicle speed detected by the vehicle speed detecting means 12 as described above. When the operation rod 263 is operated by being driven, it is predetermined in a substantially horizontal direction in the front-rear direction with respect to the conveying device 24 including the cutting frame 110 integrally with the driving case 234 and, consequently, the scraping wheel 243 on the cutting frame 110. And is held at an arbitrary position of the movement destination. As a result, in the cutting device 23, the cutting timing of the culm is changed without changing the cutting height of the cereal.

  Further, the control means 6 is also connected to an operation tool 94 of the control unit 90 as shown in FIG. Then, according to the manual operation of the operating tool 94 of the control unit 90 by the control means 6, the moving actuator 265 is in any one of the driving state in the forward direction, driving in the reverse direction, and stopping. Thus, it is possible to control the driving appropriately. The drive control of the movement actuator 265 by the control means 6 based on the manual operation of the operation tool 94 is performed in a state where the drive control based on the vehicle speed detected by the vehicle speed detection means 12 is stopped.

  In such a cutting device 23, the cutting blade 231 can be attached to and detached from the rotary drive shaft 238 from the opposite side across the cutting blade 231, not from the drive case 234 side, for example, by the following fixing means. Fixed to. As shown in FIG. 13, the fixing means includes a plurality of bolts 281, nuts 282, a fixing plate 283, and the like. The auxiliary cutting blade 232 is fixed in the same manner as the cutting blade 231.

  The fixed platen 283 is formed in a disk shape with a diameter similar to that of the fixed unit provided at the center of the cutting blade 231. The fixed platen 283 is disposed so as to be orthogonal to the axial direction of the rotation drive shaft 238 in a side view, and is fixed to the tip of the rotation drive shaft 238 at the center.

  The plurality of bolts 281 are arranged on the lower surface side of the fixed platen 283 around the fixed part of the fixed platen 283 with the rotation drive shaft 238, and are fixed at predetermined intervals in the circumferential direction with respect to the rotation center of the fixed platen 283. The Each bolt 281 is protruded upward from the cutting blade 231 side so that the head is fixed to the fixed platen 283 by welding or the like, while the screw portion is passed through the fixed platen 283.

  When this fixing means is used, the same number of bolt insertion holes as the bolts 281 are provided in the fixing portion of the cutting blade 231 at predetermined intervals in the circumferential direction with respect to the rotation center of the cutting blade 231.

  When the cutting blade 231 is fixed, the cutting blades 231 having a plurality of bolt insertion holes are placed on the fixing plate 283 with the bolt insertion holes inserted into the corresponding bolts 281 of the fixing plate 283. . Thereafter, the thread portion of each bolt 281 protruding from the cutting blade 231 side is screwed into the screw hole of the nut 282. As a result, the cutting blade 231 is fastened to the stationary platen 283 at a plurality of locations by the bolts 281 and the nuts 282, and is fixed to the rotary drive shaft 238 via the stationary platen 283.

  On the other hand, when the cutting blade 231 is removed, each nut 282 is loosened and removed while the cutting blade 231 is fixed to the rotary drive shaft 238 via the fixed plate 283 with the bolt 281 and the nut 282. Thereby, the fastening between the cutting blade 231 and the fixed platen 283 is released, and the cutting blade 231 can be detached from the rotation drive shaft 238. Thus, the cutting blade 231 is detachably fixed to the rotary drive shaft 238 from the opposite side across the cutting blade 231 by the fixing means, not from the drive case 234 side.

  As described above, in the configuration in which the cutting device 23 includes the moving unit 250, the drive case 234 is disconnected from the first link 261 of the moving unit 250 on both the left and right sides as shown in FIG. In addition, the left and right second links 262 of the moving unit 250 and the third support shaft 273 that connects the drive actuator 233 or the third extension 234d of the drive case 234 can be rotated. That is, the cutting blade 231 can also rotate around the third support shaft 273 together with the drive case 234.

  As a result, the cutting blade 231 is rotated with the driving case 234 around the third support shaft 273 in the clockwise direction in FIG. This can be done from the front rather than from above the device 23. Therefore, the cutting frame 231 positioned above the cutting blade 231 and the scraper wheel 243 of the transport device 24 do not interfere with the attaching / detaching operation, so that the attaching / detaching operation of the cutting blade 231 can be performed smoothly.

  As described above, the combine 1 is cut by the pulling device 22 that causes the culm, the cutting device 23 that cuts the culm caused by the pulling device 22, and the culm and the cutting device 23 that are caused by the pulling device 22. The cutting device 23 includes a cutting unit 20 including a conveying device 24 that conveys the cereals to the threshing unit 30 side, and the cutting device 23 has a plurality of disc-shaped cutting blades that cut the cereals on the stock side. 231, a drive actuator 233 that rotationally drives the plurality of cutting blades 231, a drive case 234 that supports the plurality of cutting blades 231 and the drive actuator 233, and is interlocked and connected via a transmission mechanism that includes these inside, The drive case 234 can be moved to the pulling device 22 side or the threshing unit 30 side, that is, forward or backward with respect to the cutting frame 110 serving as a cutting unit main body. To be intended to comprise a moving means 250 which can be held in any position of the destination with respect to the cutting frame 110.

  Accordingly, in the cutting device 23, the plurality of cutting blades 231 and the auxiliary cutting blade 232 are moved forward or backward with respect to the cutting frame 110 together with the drive case 234 by the moving means 250, and are held at an arbitrary position of the moving destination. It becomes possible. Therefore, it is possible to change the cutting timing of the cereal by changing the positions of the plurality of cutting blades 231 and the auxiliary cutting blade 232 in the front-rear direction. Therefore, the cutting unit 20 appropriately adjusts the cutting timing of the culm in accordance with the state of the reaping operation by the cutting device 23, and transports the culm by the transport device 24 on the reaping frame 110 when cutting the culm. Can be performed smoothly.

  Specifically, the cutting unit 20 moves the plurality of cutting blades 231 and the auxiliary cutting blades 232 forward according to the state of the cutting operation, for example, when the vehicle speed during the cutting operation is high. The cutting device 23 is adjusted so that the cutting timing of the cereals is advanced. Therefore, since the cereals are cut, they are immediately taken into the scraping wheels 243 of the transport device 24, so that the cereals can be transported smoothly. Further, when the vehicle speed during the cutting operation is set to a low speed, the plurality of cutting blades 231 and the auxiliary cutting blades 232 are moved rearward and adjusted so that the cutting timing of the cereal in the cutting device 23 is delayed. The Therefore, the cereal is cut while being scraped by the take-up wheel 243, and the cereal can be smoothly conveyed so as not to drop off the cereal after cutting.

  Further, the combine 1 includes a moving actuator 265 that allows the driving case 234 to be moved and held in the moving unit 250, and also includes a vehicle speed detecting unit 12 that detects the vehicle speed, and a control unit 6 that controls the driving of the moving actuator 265. The control means 6 moves the drive case 234 by a predetermined amount of movement to the pulling device side or the threshing portion side, that is, forward or backward, according to the vehicle speed detected by the vehicle speed detection means 12. The driving control of the moving actuator 265 is performed so as to be held at the previous arbitrary position.

  Thus, in the cutting device 23 of the cutting unit 20, the plurality of cutting blades 231 and the auxiliary cutting blades 232 are moved forward with respect to the cutting frame 110 together with the drive case 234 by the moving means 250 according to the vehicle speed when the combine 1 is traveling. Alternatively, it can be moved backward and held at an arbitrary position of the movement destination. Therefore, it becomes possible to automatically change the positions of the plurality of cutting blades 231 and the auxiliary cutting blades 232 in the front-rear direction to change the cutting timing of the cereal. Therefore, the cutting unit 20 appropriately adjusts the cutting timing of the culm in the cutting device 23 as needed according to the increase or decrease of the vehicle speed, and the cereal by the conveying device on the reaping frame 110 is cut when the culm is cut. The bag can be transported smoothly.

  Specifically, in the cutting unit 20, the cutting blades 231 and the auxiliary cutting blades 232 are moved forward as the vehicle speed increases, so that the cutting timing of the cereals in the cutting device 23 is adjusted to be advanced. The Therefore, since the cereals are cut, they are immediately taken into the scraping wheels 243 of the transport device 24, so that the cereals can be transported smoothly. Further, as the vehicle speed is reduced, the plurality of cutting blades 231 and the auxiliary cutting blades 232 are moved rearward so that the cutting timing of the cereals in the cutting device 23 is adjusted to be delayed. Therefore, the cereal is cut while being scraped by the take-up wheel 243, and the cereal can be smoothly conveyed so as not to drop off the cereal after cutting.

  Further, the combine 1 is configured such that the moving unit 250 moves the plurality of cutting blades 231 and the auxiliary cutting blade 232 substantially horizontally.

  Thereby, in the cutting device 23 of the cutting unit 20, even when the positions of the plurality of cutting blades 231 and the auxiliary cutting blades 232 are changed by the moving means 250 in order to adjust the cutting timing of the rice straw, the rice straw is changed. It becomes possible to cut at the previous cutting height, that is, at a constant cutting height. Therefore, the cereal can be stably cut by the cutting device 23 and can be smoothly conveyed by the conveying device 24. In addition, the cut traces of cereals in the field can be made clean.

The left view which shows the whole combine structure which has a cutting part which concerns on one Embodiment of this invention. The left view which shows the structure of a cutting part. The top view which shows the structure of a cutting part. The left view which shows the structure of a cutting device. The A arrow directional view in FIG. 4 which shows the structure of a cutting device. The partial cross section side view which shows the structure of the drive system of a cutting device. FIG. 7 is a partial cross-sectional view taken along arrow B in FIG. 6 illustrating the configuration of the drive system of the cutting device. The right view which shows the structure of the cutting device in case a cutting blade exists in the last position. FIG. 9 is a partial cross-sectional view taken along arrow C in FIG. 8 illustrating the configuration of the right side portion of the cutting device. The right view which shows the structure of the cutting device in case a cutting blade exists in the foremost position. The right view which shows the structure of a holding member. (A) The figure in the case of comprising a guide. (B) The figure in the case of comprising a moving actuator. The block diagram which shows the control mechanism of the movement actuator of a moving means. Sectional drawing which shows the structure of the fixing structure of the cutting blade by a fixing means. The right view which shows the structure of the cutting device of the rotated state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combine 6 Control means 12 Vehicle speed detection means 20 Cutting part 21 Weeding tool 22 Pulling device 23 Cutting device 24 Conveying device 30 Threshing part 231 Cutting blade 231A First cutting blade 231B Second cutting blade 231C Third cutting blade 231D Fourth cutting Blade 232 Auxiliary cutting blade 233 Drive actuator 234 Drive case 243 Stirring wheel 250 Moving means 265 Moving actuator

Claims (3)

A pulling device that causes cereals;
A cutting device for cutting the culm caused by the pulling device;
A combine having a harvesting unit comprising a cereal culm caused by the pulling device and a conveying device that conveys the cereals cut by the cutting device to the threshing unit side,
The cutting device is
A plurality of disc-shaped cutting blades for cutting the cereals on the stock side,
A drive actuator for rotationally driving the plurality of cutting blades;
A drive case that supports the plurality of cutting blades and the drive actuator, and interlocks and connects them via a transmission mechanism having them inside;
The drive case is movably supported with respect to the reaping part main body toward the pulling device side or the threshing part side, and includes a moving means that can be held at an arbitrary position of the destination with respect to the reaping part main body. Combine. A moving actuator that makes the drive case movable and holdable is included in the moving means,
Vehicle speed detection means for detecting the vehicle speed;
Control means for performing drive control of the moving actuator,
In accordance with the vehicle speed detected by the vehicle speed detection means, the control means moves the drive case to the pulling device side or the threshing portion side by a predetermined movement amount and holds it at an arbitrary position of the movement destination. The combine according to claim 1, wherein drive control of the moving actuator is performed.   The combine according to claim 1 or 2, wherein the moving means is configured to move the drive case substantially horizontally.

Images