JP3200790U - Corn harvester - Google Patents

Abstract

The present invention provides a corn harvester that improves the efficiency of corn harvesting. A harvesting machine A includes a pair of left and right front and rear wheels and a cutting unit 1 disposed in order from the front to the rear of a traveling vehicle A1 having a driver seat disposed above the front wheels. A delivery auger 2, a transport unit 3, a skinning device 4, a bucket, and a crushing device 6 are provided. The traveling vehicle A1 includes a traveling hydrostatic continuously variable transmission 7 for transmitting the power output from the engine A5, which is a drive source of the harvester A, to the drive shaft P of the front and rear wheels, and the power output from the engine A5. Is provided with a hydrostatic continuously variable transmission 8 for harvesting work, which is transmitted to the drive shafts P of the cutting unit 1, the sending auger 2, the transport unit 3, the skinning device 4 and the crushing device 6. [Selection] Figure 15

Description

  The present invention relates to a corn harvester that has a function of harvesting corn from a stalk and harvesting only the corn.

  A corn harvester (hereinafter referred to as “harvesting machine”) having a function of harvesting only corn from the stalk while harvesting the corn along the field while cutting the corn is known. What is described in is known.

  The harvesting machine described in Patent Document 1 is arranged so as to extend from the rear of the driving auger to the rear of the driving auger, the cutting auger disposed at the front of the driving seat of the traveling vehicle, the rear of the cutting unit. And a bucket disposed at the rearmost part of the traveling vehicle.

  That is, this harvesting machine cuts the corn together with the stem at the cutting part while traveling, separates the fruit from the stem, and sends the separated fruit to the conveying part by the delivery auger. Then, the delivered fruit is transported backward by the transport unit and can be harvested by putting it into the bucket from the chute of the transport unit.

JP 2013-126390 A

  A harvesting machine such as that described in Patent Document 1 normally uses the power of an engine that drives a traveling vehicle to drive power from a cutting unit, a sending auger, a conveyance unit, etc. via a transmission mechanism such as a chain or a gear train and a transmission. To communicate as.

  At the time of harvesting work, in order to prevent clogging of the harvested stems and grains in the harvesting machine and to perform efficient harvesting, the cutting speed of the cutting part and the sending speed of the sending auger by the operation of the transmission and the accelerator, and The traveling speed of the traveling vehicle is set to an optimum balance with respect to the harvesting work speed such as the transport speed of the transport section.

  However, in an unstable place such as a farm field, it is difficult to run the traveling vehicle at a constant speed, and the speed balance between the traveling speed and the harvesting work speed is lost.

  When the traveling speed of the traveling vehicle becomes high, the harvesting of the stem and the separation of the seeds by the harvesting part cannot catch up, the stems and seeds are stuck in the harvesting part and the sending auger, and the harvesting operation is interrupted. There was a problem that the work of removing clogging had to be performed, and the efficiency of the harvesting work was reduced.

  The harvesting operation requires the operator to perform the operation of the traveling vehicle accurately at a constant speed and along the ridge. In order to perform such an operation in an unstable place such as a field, undulation of the field is required. This is a very difficult operation due to the vibration of the engine of the traveling vehicle and the operation of the vehicle, and the operation requires attention. Therefore, the burden on the operator is large, and the efficiency of the harvesting work is reduced due to such a burden. was there.

  In order to solve the above-mentioned problems, the means adopted by the present invention are a cutting part arranged in front of the driver's seat of the traveling vehicle, a feeding auger arranged behind the cutting part, and driving from behind the sending auger. A corn harvester comprising a transport unit arranged behind the seat and a bucket arranged at the rearmost part of the traveling vehicle, the engine provided in the traveling vehicle, the traveling vehicle, and the cutting A hydrostatic continuously variable transmission that transmits engine power to the drive shafts and rotates the drive shafts in conjunction with the drive shafts of the drive unit, the feed auger, and the transport unit. It is a corn harvesting machine.

  The cutting part includes a rotary knife that is driven to rotate about a vertical axis, and the rotary knife has three or more cutting blades for cutting a stalk in a field. It is preferred that it is as described.

  A guide projection protruding so as to enter between the field scene and the stalk in the fallen state at the tip of a divider for guiding the stalk of the field to the gathering chain of the reaper; It is preferable that a protrusion enters between the farm scene and the stalk in a lying state and guides it to the divider while standing the stalk.

  The transport unit includes a duct provided so as to extend from the rear side of the delivery auger to the bucket side, a discharge port opened on a lower side on the front side of the duct, and a transport direction in the duct. A belt conveyor arranged as a direction, and a discharge auger that is pivotally supported so as to drive and rotate with an axis parallel to the axis of the front and rear rotating rollers around which the endless belt of the belt conveyor is wound, The discharge auger is disposed on the inner peripheral side of the endless belt that is wound around and contacts the rotation roller so as to be close to the rotation roller on the delivery auger side and to face the discharge port in the vertical direction. Preferably it is.

  The endless belt is preferably made of synthetic resin.

  The skin peeling device is disposed between the rear end of the duct and the bucket, and compressed air is jetted toward the child between the rear end of the duct and the skin peeling device. It is preferable that an air nozzle is disposed.

  It further includes a crushing device that digs up the residue remaining in the field after cutting by the cutting unit and crushes the residue, and the crushing device is disposed below the bucket and at the rearmost part of the traveling body. It is preferable.

It is a front side perspective view of the harvester of one embodiment concerning the present invention. FIG. 2 is a rear perspective view of FIG. 1. It is a right view of FIG. It is a left view of FIG. It is a top view of FIG. It is a bottom view of FIG. It is a principal part enlarged view of FIG. It is a front view of FIG. It is a principal part enlarged view of FIG. It is a rear view of FIG. It is the (11)-(11) sectional view taken on the line of FIG. It is a principal part enlarged view of FIG. FIG. 3 is an enlarged view of a main part of FIG. 2. It is a principal part enlarged view of FIG. It is an operation circuit diagram of a harvester.

  Hereinafter, a harvesting machine A according to an embodiment of the present invention will be described with reference to FIGS.

  As shown in FIGS. 1 to 14, the harvesting machine A includes a left and right pair of front and rear wheels A <b> 2 and A <b> 3, a traveling vehicle A <b> 1 provided with a driver's seat A <b> 4 disposed above the front wheel A <b> 2, from the foremost to The cutting part 1, the sending auger 2, the conveying part 3, the skinning device 4, the bucket 5 and the crushing device 6 are provided in order.

  As shown in FIG. 15, the traveling vehicle A1 is a hydrostatic continuously variable transmission for traveling that transmits power output from an engine A5 serving as a drive source of the harvester A to the drive shafts P of the front and rear wheels A2 and A3. (HST: Hydro Static Transmission (hereinafter referred to as “traveling HST”) 7 and the power output from the engine A 5 are used to drive the cutting unit 1, the sending auger 2, the transport unit 3, the skinning device 4, and the crushing device 6. A hydrostatic continuously variable transmission (HST: Hydro Static Transmission (hereinafter referred to as “HST for harvesting work”)) 8 for harvesting work transmitted to the shaft P is provided.

  This harvesting machine A cuts the corn in the field by the cutting unit 1 while traveling, separates the berries from the stalks, discharges the stalks to the field, and transports only the berries in the sending auger 2. The data is sent to the part 3.

  In addition, the transport unit 3 transports the fruit rearward and transports it to the peeling device 4.

  Further, the peeler 4 peels off the skin of the fruit and transfers the peeled off fruit to the bucket 5.

  In addition, the crushing device 6 crushes the stems and stumps discharged to the field.

  Here, in the traveling HST 7, as shown in FIG. 12, a transmission mechanism A6 that is shifted by an operation lever A60 provided in the driver's seat is connected to an output shaft A50 of the engine A5, and an output shaft of the transmission mechanism A6 A hydraulic pump 7A having an input shaft 70A that is rotated by the rotation of A61, and a hydraulic motor that is connected to the hydraulic pump 7A through hydraulic pipes 70 and 71 and that has an output shaft 70B that is rotated by pressure oil from the hydraulic pump 7A. 7B.

  As shown in FIG. 12, the harvesting work HST 8 is connected to an output shaft A50 of the engine A5 with a speed change mechanism A6 that is shifted by an operation lever A60 provided in the driver's seat, and the output shaft of the speed change mechanism A6. A hydraulic pump 8A having an input shaft 80A that rotates by the rotation of A61, and a hydraulic motor that has an output shaft 80B that is connected to the hydraulic pump 8A through hydraulic pipes 80 and 81 and rotates by pressure oil from the hydraulic pump 8A. 8B.

  The output shaft A61 of the transmission mechanism A6 and the input shafts 70A and 80A are connected via a power transmission unit A7, and the output shafts A70 and A71 of the power transmission unit A7 are connected to the input shafts 70A and 80A, respectively. .

  The power transmission unit A7 selectively transmits the rotational power input from the output shaft A61 to the output shafts A70 and A71 by operating the operation lever A72 provided in the driver's seat. By operating the lever A72, power can be applied to both the traveling HST7 and the harvesting work HST8, and power can be applied to either the traveling HST7 or the harvesting work HST8. ing.

  The hydraulic pipe 70 flows pressure oil in a direction in which the hydraulic motor 7B rotates in the forward direction (rotation direction in which the traveling vehicle moves forward), and the hydraulic pipe 71 in a direction in which the hydraulic motor 7B rotates in the reverse direction (reverses the traveling vehicle). Rotate the pressure oil in the rotation direction)

  Here, the forward direction is a direction in which the traveling vehicle A1 moves in the harvesting operation direction, and the backward movement is a direction in which the traveling vehicle A1 moves in the non-harvesting operation direction.

  The hydraulic pipe 80 flows pressure oil in a direction in which the hydraulic motor 8B is normally rotated (rotation direction in which the harvesting unit 1, the sending auger 2, the transport unit 3, the skinning device 4, and the crushing device 6 are harvested). The hydraulic pipe 81 allows pressure oil to flow in the direction in which the hydraulic motor 8B is rotated in the reverse direction (rotation direction in which the harvesting unit 1, the sending auger 2, the transport unit 3, the skinning device 4, and the crushing device 6 are not harvested). is there

  In the hydraulic pumps 7A and 8A, the hydraulic pumps 7A and 8A are turned on and off by the operation of the operation lever 78 provided in the driver's seat, and the hydraulic oil is supplied to the hydraulic pipes 70 and 80 and the hydraulic pipe 71, 81 and the flow rate of pressure oil is increased or decreased.

  The rotation of the hydraulic motor 7B is transmitted from the output shaft 70B to the drive shaft P via the center differential A10 of the traveling vehicle A1, and the rotation of the hydraulic motor 8B is transmitted from the output shaft 70B via the rotation transmission unit A8 to the cutting unit. 1 is transmitted to each drive shaft P of the delivery auger 2, the transport unit 3, the skinning device 4, and the crushing device 6.

  The rotation transmission unit A8 connects the output shaft 80B and each drive shaft P, transmits the rotational power of the output shaft 80B to each drive shaft P, and converts the rotation of the output shaft 80B into the rotation of each drive shaft P. A conversion mechanism (not shown) is provided.

  Further, the rotation transmission unit A8 outputs so that the cutting speed, the sending speed, the conveying speed, and the crushing speed become the speed at which the harvesting work can be performed most efficiently corresponding to the traveling speed of the traveling vehicle A1 at the time of the harvesting work. The rotational speed of the shaft 80B is changed and transmitted to each drive shaft P.

  That is, during the harvesting operation, the operation lever A72 is operated to power both the traveling HST7 and the harvesting operation HST8, and the operation lever 78 is operated to connect the hydraulic pipes 70, 80 from the hydraulic pumps 7A, 8A. By supplying pressure oil to the hydraulic motors 7B and 8B and rotating the hydraulic motors 7B and 8B in the forward direction, the traveling vehicle 1 can be moved forward, the cutting unit 1, the sending auger 2, the transport unit 3, the skinning device 4, and the crushing device. 6 can be harvested.

  Further, the operating speed of the traveling vehicle 1 can be changed by increasing or decreasing the flow rate of the pressure oil by operating the operation lever 78, and the cutting unit 1 and the sending auger are adapted to correspond to the change in the traveling speed. 2. The harvesting operation speed of the transport unit 3, the skinning device 4, and the crushing device 6 can be changed.

  Therefore, by operating the operation lever 78, the traveling vehicle HST7 and the harvesting work HST8 are simultaneously operated in the direction of harvesting work, and the traveling vehicle A1 can be traveled, and in conjunction with the traveling of the traveling vehicle A1. The cutting unit 1, the sending auger 2, the transport unit 3, the skinning device 4, and the crushing device 6 can be operated at an efficient work speed with respect to the traveling speed of the traveling vehicle A1.

  After the harvesting operation, the leaves and soil remain in the cutting unit 1, the sending auger 2, the transport unit 3, the skinning device 4 and the crushing device 6, and when removing them, the operation lever A72 is operated to operate the HST8 for harvesting operation. In a state where the traveling vehicle 1 is stopped by operating the operation lever 78, supplying pressure oil from the hydraulic pump 8A to the hydraulic pipe 81, and rotating the hydraulic motor 8B in reverse. The harvesting unit 1, the sending auger 2, the transport unit 3, the skinning device 4, and the crushing device 6 can be operated without harvesting, and the remaining foliage and earth and sand can be discharged.

  When discharging the remaining foliage and earth and sand, it may be performed while the traveling vehicle 1 is traveling, and when moving after the harvesting operation, the operation lever A72 is operated to power only the traveling HST7. The operating lever 78 is operated to supply pressure oil from the hydraulic pump 7A to the hydraulic pipe 70, and the hydraulic motor 7B is rotated in the forward direction, whereby the cutting unit 1, the sending auger 2, the transport unit 3, and the skinning device 4. The traveling vehicle 1 can be driven with the crushing device 6 stopped.

  Further, by increasing or decreasing the flow rate of the pressure oil from the hydraulic pump 7A, the rotational speed of the output shaft 70B of the hydraulic motor 7B changes, and when the traveling speed of the traveling vehicle A1 changes along with the change of the rotational speed, In conjunction with the change in the traveling speed of the traveling vehicle A1, the working speeds of the cutting unit 1, the sending auger 2, the conveying unit 3, the skinning device 4 and the crushing device 6 also change, so that the traveling vehicle A1 travels during the harvesting operation. Even if the speed changes, the cutting unit 1, the sending auger 2, the transport unit 3, the skinning device 4, and the crushing device 6 can be operated at an efficient work speed in conjunction with the traveling speed of the traveling vehicle A1.

  Hereinafter, the structure of the cutting part 1, the sending auger 2, the conveyance part 3, the peeling apparatus 4, the bucket 5, and the crushing apparatus 6 will be described.

  As shown in FIGS. 1, 5, 6 to 9, and 12, the cutting unit 1 includes five dividers 10 for four strips, and a guide space 11 secured between the dividers 10. Four rotary knives 12 for cutting the stalks of the field are pivotally supported on the lower end side of the rotator so as to be rotatable about the upper and lower axes.

  The divider 10 is pivotally supported by the traveling vehicle A1 via the hydraulic cylinder 10A so as to be rotatable in the vertical direction, and is moved up and down by expansion and contraction of the hydraulic cylinder 10A.

  A gathering chain 13 that feeds the fruit separated from the stem into the delivery auger 2 is supported on the divider 10 so as to be rotatable about the upper and lower axes.

  Further, below the gathering chain 13, a picking roller 13 'that supports the cut stem and pulls it downward is pivotally supported around the front and rear axes.

  Further, a separating plate 13 ″ is provided between the gathering chain 13 and the picking roller 13 ′ so as to separate the fruit from the stem drawn by the picking roller 13 ′.

  As shown in FIGS. 1, 8, 9, and 11, a delivery auger 2 that feeds the separated fruit to the transport unit 3 is rotatable around the left and right axes at the last part of the divider 10. It is pivotally supported.

  As shown in FIGS. 1 to 9 and 11, a guide protrusion 14 is provided at the tip of the divider 10 so as to project the stalk of the farm field between the farm scene and the lying stalk. During the harvesting operation, the guide protrusion 14 enters between the farm scene and the stalk in a lying state, and guides it to the guide space 11 while raising the stalk.

  That is, not only the stems that stand up in the field during the harvesting operation, but also the stems that are lying down can be raised and guided to the guide space 11 by the guide protrusions 14, thereby preventing hunting of stems from being left in the harvesting operation. Can do.

  As shown in FIGS. 6 and 7, the rotary knife 12 has three cutting blades 12A for cutting the stems in the field, and the three cutting blades 12A can efficiently cut the stems. Yes.

  As shown in FIGS. 1 and 5 to 7, the gathering chain 13 includes a pair of left and right parts including a chain 13 </ b> A and a large number of conveying protrusions 13 </ b> B protruding radially along the outer periphery of the chain 13 </ b> A. In addition, each of the dividers 10 is pivotally supported, and the conveyance protrusions 13B face each other in the guide space 11.

  As shown in FIGS. 6 to 9, the picking roller 13 ′ is a pair of left and right spiral wings 130 provided on the outer periphery. It is made to pull down by.

  As shown in FIGS. 5 to 9, the separation plate 13 ″ is a pair of left and right, and is provided with a clearance S between them, and the stem is drawn downward by the picking roller 13 ′. When it is done, it is designed to scrape the grain from the stem.

  The scraped fruit is transported to the delivery auger by the transport protrusion 13B of the gathering chain 13A.

  The delivery auger 2 has an axial length that opposes all the guide spaces 11, and includes spiral wings 20 that protrude from the outer periphery so as to be opposite to each other with a central portion in the axial direction as a boundary. .

  The spiral direction of the spiral wing 20 is set to a direction in which the seed can be moved to the center of the delivery auger 2 and moved to the transport unit 3 when the delivery auger 2 rotates in the harvesting direction. ing.

  As shown in FIG. 11, the conveyance unit 3 is disposed so as to be inclined at a length that passes from the rear of the central portion in the axial direction of the delivery auger 2 to below the driver's seat A4 and reaches the vicinity of the upper part of the front end of the skinning device 4. The duct 30, the belt conveyor 31 disposed in the duct 30 over the entire length of the duct 30, the chute 32 connected to the rear end of the duct 30, the discharge chute 33 connected to the rear end of the chute 32, The discharge port 34 opened below the rotary roller 31A on the front end side of the duct 30 and the front end side of the belt conveyor 31 and the rear of the rotary roller 31A are rotatable about an axis parallel to the axis of the rotary roller 31A. A discharge auger 35 that is pivotally supported and a see-through portion 36 that is provided on the peripheral wall 30 </ b> A of the duct 30 and sees through the inside of the duct 30 are provided.

  The duct 30 is provided with an opening 30B that guides the fruit delivered from the delivery auger 2 into the duct 30 in the upper part on the front end side, and is arranged so that the belt conveyor 31 is located immediately below the opening 30B. Thus, the seeds fed into the duct 30 can be placed on the belt conveyor 31 as they are.

  The belt conveyor 31 includes a driven-side rotating roller 31A, a driving-side rotating roller 31B pivotally supported near an opening 30C on the rear end side of the duct 30 so as to be rotatable around an axis parallel to the rotating roller 31A. The rotating roller 31A and the endless belt 31C wound around the rotating roller 31B.

  In the endless belt 31C, a plurality of support plates 31D that support the fruit placed on the outer periphery are projected outward along the radial direction, and the support plate 31D supports the fruit so that the belt conveyor The sliding of the grain by the inclination of 31 is prevented.

  The endless belt 31C is made of a soft synthetic resin material such as a rubber material. The endless belt 31C can relieve the contact impact on the rotating roller 31A and the rotating roller 31B during rotation and reduce the impact sound due to the contact impact. It can be done.

  The chute 32 includes a child practical opening 32A that is opened obliquely downward toward the skinning device 4, an opening / closing plate 32B that opens and closes the child practical opening 32A, and a discharge opening 32C that is opened at the rear end. A blower 32D that blows air into the chute 32 toward the discharge opening 32C, and peels off the fruit from the child practical opening 32A among the fruit and foliage transported by the transport unit 3. The waste material such as foliage and earth and sand is blown off to the discharge opening 32C by the air blower 32D and discharged.

  The opening / closing plate 32B is rotatably supported around the left and right axes, and is biased by a biasing portion 32E such as a spring so as to always close the child practical opening 32A.

  The urging force of the urging portion 32E supports the weight of the opening / closing plate 32B, maintains the state where the opening / closing plate 32B closes the child practical opening 32A, and the weight of the fruit acts on the opening / closing plate 32B. The opening / closing plate 32 </ b> B has a biasing force that rotates in a direction to open the child practical opening 32 </ b> A against the biasing force.

  The wind power of the blower 32D is wind power that can be blown toward the discharge opening 32C against the weight of unnecessary objects, and cannot be countered against the weight of the fruit. Wind power that cannot be blown away.

  That is, it is possible to blow away only unnecessary objects lighter than the fruit toward the discharge opening 32C and transfer only the fruit from the child practical opening 32A to the skinning device 4.

  As shown in FIGS. 1 to 5, 10, and 11, the discharge chute 33 directs the discharge port 33 </ b> A to the right, so that unnecessary items that are discharged do not reach the peeling device 4 and the bucket 5. Has been.

  The discharge auger 35 has an axial length that is substantially the same as the axial length of the rotating roller 31A, and enters the inner peripheral side of the endless belt 31 when the belt conveyor conveys the fruit as shown in FIG. By the tilting and conveying operation of the endless belt 31, unnecessary matter that accumulates on the rotating roller 31 </ b> A side is discharged out of the endless belt 31 </ b> C along the axial direction of the rotating roller 31 </ b> A.

  Unnecessary items discharged outside the endless belt 31 </ b> C reach the discharge port 34, and are discharged out of the duct 30 from the discharge port 34.

  The discharge auger 35 can prevent the accumulation of unnecessary materials in the vicinity of the rotating roller 31A, thereby preventing the rotation of the driven-side rotating roller 31A from occurring and preventing the operation of the belt conveyor 31. The occurrence of defects can be prevented.

  The see-through portion 36 includes a through-opening 36A opened in the peripheral wall 30A of the duct 30 and a transparent plate 36B fixed to the side surface of the duct 30 so as to close the through-opening 36A. You can see the inside.

  By such a see-through portion 36, it is possible to check the accumulation state of the unnecessary matter in the duct 30, the state of the belt conveyor 31, and the like, thereby preventing the clogging of the duct 30 and the failure of the belt conveyor 31 in advance. be able to.

  As shown in FIGS. 11 to 14, the skinning device 4 is rotatable around an axis in the front-rear direction, and has a lower skinning part 4 </ b> A composed of a plurality of skinning rotating bodies 40 </ b> A arranged in parallel in the left-right direction, An upper skinned portion 4B made up of a plurality of skinned rotating bodies 40B that are rotatable about a horizontal axis and arranged in parallel in the front-rear direction, and an air nozzle 4C disposed above the front end side of the upper skinned portion 4B. I have.

  The lower skin peeling part 4A aligns the longitudinal direction of the fruit between the skin peeling rotators 40A adjacent in the left-right direction as the front-rear direction and rotates the fruit by the rotation of the skin peeling rotator 40A. It is made to peel off.

  A large number of irregularities 400 are formed on the outer periphery of the peeling skin rotating body 40A, and the fruit is peeled off by the irregularities 400.

  The upper skin peeling part 4B has a plurality of skin peeling plates 40C projecting outward along the radial direction on the outer periphery of the skin peeling rotator 40B. The skin peeling plate 40C is brought into contact with the grains aligned with the lower skin peeling portion 4A to peel the skin.

  Among the plurality of skinning rotating bodies 40B, the rotational speed of the skinning rotating body 40B ′ pivotally supported at the rearmost part is set to be the highest, and the skinning plate 40C reaches the fruit to the rear side of the bucket 5. It is set as the rotation speed that can fly vigorously.

  For this reason, the deviation of the fruit stored in the bucket 5 can be prevented, and the fruit can be stored in the bucket 5 on average.

  The air nozzle 4C sprays compressed air over the entire width of the lower peeled portion 4A with respect to the fruit that has reached the lower peeled portion 4A, and by the force of the compressed air, the lower peeled portion 4A and It is designed to assist the skinning of the upper skinned part 4B, whereby efficient skinning can be performed.

  Below the lower skinned portion 4A, provided above the hopper H, and a hopper H for storing seeds that fall apart from the fruit through the gap between the adjacent skinned rotating bodies 40A of the lower skinned portion 4A. The screened sieve I is arranged, and the seeds and fine foliage that fall are passed through the sieve I and only the seeds are dropped onto the hopper H.

  At the bottom of the hopper H, a discharge auger H1 for discharging the stored seeds is disposed, and the seeds stored in the hopper H are discharged out of the hopper H. The discharged seeds are collected and manually put into the bucket 5 after the harvesting work, or a transporting device (not shown) for transporting the seeds discharged from the hopper H to the bucket 5 is provided during the harvesting work. The seed may be discharged while being stored, and may be transported to the bucket 5.

  As shown in FIGS. 1 to 5, 10, and 11, the bucket 5 is formed in a divergent shape from the bottom 50 toward the opening 51 at the upper end, and the side wall 52 that surrounds the four sides is made of punching metal. The side wall 52 is provided with a large number of through holes 53.

  The height position of the opening 51 of the bucket 5 is set to be substantially the same height as the rear end of the child practical opening 32 </ b> A and higher than the rear end of the skinning device 4.

  The side wall 52 on the side of the skinning device 4 is formed with an input space 52A for putting the fruit to be ejected from the skinning device 4 into the bucket 5, and the fruit to be ejected from the skinning device 4 is placed in the input space. It passes through 52A and is thrown into the bucket 5.

  The lower end edge 52B of the input space 52A is set to a height position that is substantially the same as the height position of the lower end of the lower skinned portion, so that the fruit to be skipped is not caught by the lower end edge 52B and is reliably inserted. Is allowed to pass through.

  As shown in FIGS. 10 and 11, such a bucket 5 includes a hydraulic cylinder (expandable body) 70 supported so as to extend over the rearmost portion of the traveling vehicle A1 and the bucket 5, and a slide guide provided in the traveling vehicle A1. It is supported by the motion guide part 7 provided with the long hole 71 and the slide protrusion 72 provided in the bucket 5 and slidably fitted in the slide guide long hole 71.

  As shown in FIG. 10, the hydraulic cylinder 70 is arranged so that the extending direction is an obliquely leftward direction. When the hydraulic cylinder 70 is extended, the bucket 5 is lifted obliquely upward to the left, and is lowered along a rising locus by contraction. To return to the original position.

  The slide guide long hole 71 is provided so that its longitudinal side is parallel to the extending direction of the hydraulic cylinder 70, and guides the slide of the slide protrusion 72 of the bucket 5 that moves up and down by the expansion and contraction of the hydraulic cylinder 70. Yes.

  The upper end 71 </ b> A of the slide guide slot 71 is a rising limit position of the bucket 5 and a rotational position for rotating the bucket 5 in the left-right direction.

  The state in which the bucket 5 is raised and rotated counterclockwise is a discharge state in which the opening 51 is inclined downward and the stored fruit is discharged.

  That is, when the sliding projection 72 that slides due to the extension of the hydraulic cylinder 70 comes into contact with the upper end 71 </ b> A, the raising of the bucket 5 stops and the state in which the upper end 71 comes into contact with the extension of the hydraulic cylinder 70 that continues. By rotating the bucket 5 in the left direction around the axis of the slide protrusion 72, the bucket 5 can be put into a discharged state.

  Further, by contracting the hydraulic cylinder 70 from the discharged state of the bucket 5, the bucket 5 can be rotated rightward and lowered to the original position.

  In such a bucket 5, the side wall 52 is made of a punching metal, so that the bucket 5 is lightened and the storage state of the fruit can be visually recognized from the outside.

  Note that the side wall 52 is not limited to the punching metal, and may be any material that can reduce the weight and can visually recognize the inside of the bucket 5 from the outside, such as an expanded metal or a transparent synthetic resin plate.

  Further, the bucket 5 is put into a discharge state by being charged with a fruit from the input space 52A provided in the side wall 52 during the harvesting operation, and rotating at the rising limit position while the bucket 5 is raised during the discharging operation. Therefore, the upper end position of the bucket 5 can be lowered, and thereby the center of gravity of the bucket 5 can be lowered.

  Therefore, by reducing the weight of the bucket 5 and lowering the center of gravity of the bucket 5, it is possible to improve the stability of the harvester A during traveling and during the harvesting operation.

  Moreover, since the fruit is introduced into the bucket 5 from the insertion space 52A provided in the side wall 52 of the bucket 5, the highest position of the chute 32 can be lowered, and this also allows the harvester A The stability at the time of running and harvesting can be improved.

  The crushing device 6 is pivotally supported around the left and right shafts at the rearmost portion of the traveling vehicle A1 and directly below the bucket 5, and is supported by a hydraulic cylinder 60 and a link portion 61 so as to be movable up and down. ing.

  This crushing device 6 is formed by projecting a large number of blades 63 on the outer periphery of a rotating shaft 62. By rotation, the blade 63 crushes the stump while digging up the field, and crushes the stem that has been cut down. Is.

  The space immediately below the bucket 5 is generally a space that is not used. By arranging the crushing device 6 in such a space, the engine A5, the speed change mechanism A6, and the traveling HST7 disposed between the front and rear wheels. The position of each component necessary for the operation of the harvesting machine A, such as the harvesting work HST8 and the center differential A10, can be lowered.

  That is, by lowering the position of each component necessary for the operation of the harvester A disposed between the front and rear wheels, the overall height of the harvester A can be lowered, whereby the overall center of gravity of the harvester A can be reduced. Can be lowered.

  Therefore, when the center of gravity of the entire harvesting machine A is lowered, the stability of the working posture during the traveling of the harvesting machine A and during the harvesting operation can be improved.

A: Harvesting machine A1: Traveling vehicle A5: Engine 1: Cutting part 2: Sending auger 3: Conveying part 4: Peeling device 5: Bucket 6: Crushing device 7: HST for traveling
8: HST for harvesting operation: Drive shaft 10: Divider 12: Rotary knife 12A: Cutting blade 13: Gathering chain 14: Guide protrusion 30: Duct 31: Belt conveyor 34: Discharge port 35: Discharge auger 31A: Rotating roller 31B: Rotating roller 31C: Endless belt 60: Air nozzle

Claims (7)

  A cutting part arranged in front of the driver's seat of the traveling vehicle, a sending auger arranged behind the cutting part, a conveying part arranged from the rear of the sending auger to the rear of the driver's seat, and the last of the traveling vehicle A corn harvester having a bucket disposed in a section, between the engine provided in the traveling vehicle and the drive shafts of the traveling vehicle, the mowing unit, the delivery auger, and the transport unit. A corn harvester comprising a hydrostatic continuously variable transmission that transmits engine power to the drive shafts and rotates the drive shafts in conjunction with each other.   The cutting part includes a rotary knife that is driven to rotate about a vertical axis, and the rotary knife has three or more cutting blades for cutting a stalk in a field. A corn harvester according to claim 1, characterized in that it is described.   A guide projection provided on the cutting unit, protruding from the tip of a divider that guides the stalk of the field to the gathering chain of the reaping unit so as to enter between the field scene and the stalk in a lying state; The guide protrusion is inserted between the farm scene and the fallen stem during the harvesting operation, and is guided to the divider while standing upright. Corn harvester as described in.   The transport unit includes a duct provided so as to extend from the rear side of the delivery auger to the bucket side, a discharge port opened on a lower side on the front side of the duct, and a transport direction in the duct. A belt conveyor arranged as a direction, and a discharge auger that is pivotally supported so as to drive and rotate with an axis parallel to the axis of the front and rear rotating rollers around which the endless belt of the belt conveyor is wound, The discharge auger is disposed on the inner peripheral side of the endless belt that is wound around and contacts the rotation roller so as to be close to the rotation roller on the delivery auger side and to face the discharge port in the vertical direction. The corn harvester according to any one of claims 1 to 3, wherein the corn harvester is provided.   The corn harvester according to claim 4, wherein the endless belt is made of synthetic resin.   The skin peeling device is disposed between the rear end of the duct and the bucket, and compressed air is jetted toward the child between the rear end of the duct and the skin peeling device. The corn harvester according to any one of claims 1 to 5, wherein an air nozzle is disposed.   It further includes a crushing device that digs up the residue remaining in the field after cutting by the cutting unit and crushes the residue, and the crushing device is disposed below the bucket and at the rearmost part of the traveling body. A corn harvester according to any one of claims 1 to 6.

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