JPH0323056Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a maize harvester with improved maize feeding function.

(Prior Art) A feed roller which is disposed above a pair of cutting blades of a maize harvester and which feeds cut maize to a shredding device is used to feed maize In order to prevent leaves or weeds from wrapping around the maize and to ensure feeding of the maize, protrusions are provided on both of the pair of left and right rollers.

(Problem to be solved by the invention) However, such a feed roller, especially the feed roller near the fixed blade of a shredding device, may be pressed against the fixed blade during shredding, and the grass etc. may be rolled up. This poses a problem in that it is easy to stick to the grass and difficult to remove if short grass or maize seeds get between the protrusions.

The present invention makes the protrusion provided on one of the feed rollers protrude to the maximum on the front side and retracts on the rear side to ensure feeding of the maize. To provide a maize harvester capable of removing leaves etc. with a scraper.

(Means for Solving the Problems) A specific configuration for solving the problems in the present invention is that a pair of cutting blades 31 are arranged at the lower front of the shredding device 24, and a pair of cutting blades 31 are arranged above each cutting blade 31. A pair of feed rollers 30 for feeding maize C to the shredding device 24 are arranged, a plurality of protrusions 56 in the circumferential direction are provided on the outer peripheral surface of one feed roller 30B, and the other feed roller 30A is rotated around the vertical axis 29. A cylindrical body 51 that is rotationally driven, a plurality of protrusions 53 in the circumferential direction that are slidably penetrated through the cylindrical body 51 in the radial direction, and a plurality of protrusions 53 that are arranged inside the cylindrical body 51 and that are slidably pressed against each other. The eccentric cylinder 52 is fixed at an eccentric position with respect to the cylinder 51 so that a protrusion 53 that rotates together with the rotation of the cylinder 51 can be moved in and out of the cylinder 51. In the arranged maize harvester, the axis P of the eccentric cylindrical body 52 is located approximately in front of the vertical axis 29 of the cylindrical body 51 so that the protrusion 53 protrudes maximum on the front side and sinks into the cylindrical body 51 on the rear side, The shredding device 24 is provided with a scraper 55 that is close to the rear side of the outer peripheral surface of the cylindrical body 51 into which the protrusion 53 is recessed.

(Function) The axis P of the eccentric cylindrical body 52 is the vertical axis 29 of the cylindrical body 51.
The projection 53, which is located approximately in front of the cylinder body 51 and appears and retracts in the radial direction while rotating together with the cylinder body 51, is made to protrude to the maximum on the front side of the cylinder body 51 and retract at the rear side.
is surely taken in from the front side and sent to the shredding device 24. A scraper 55 is installed on the rear side of the outer peripheral surface of the cylindrical body 51.
are arranged close to each other, and grass and leaves wrapped around the cylindrical body 51 are removed by a scraper 55. Since the protrusion 53 is recessed into the interior of the cylindrical body 51 on the rear side, it does not collide with the scraper 55.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In FIGS. 1 to 4, a maize reaping device 1 includes a traveling vehicle 2 represented by a tractor, a maize harvester 3, and a harvest storage container (not shown) mounted on the bonnet of the traveling vehicle 2. .

Traveling vehicle 2 indicates a back and forth type tractor,
4 is a transmission case that forms part of the fuselage, 8
9 indicates a rear axle case, 9 indicates a rear wheel, and 12 indicates a rear wheel fender. An operating section 13 is formed between and in front of both rear wheel fenders 12.
3, a seat 14 and a handle 15 are arranged, and these can be rearranged between a forward position and a reverse position, and in FIGS. is the forward direction of work progress.

Reference numeral 16 indicates a hydraulic system provided at the rear upper part of the transmission case 4, and reference numeral 17 indicates a three-point link mechanism having a pair of left and right lower links 18 and one top link 19, which allows the maize harvester 3 to move up and down. .

This maize harvester 3 includes a divider 21, a guide rod 22, a cutting feed device 23, a casing 24a, a flywheel 25, and a blow-up chute 2.
6 and a shredding device 24 having a mounting frame 27.

There are a pair of dividers 21 on the left and right in front of the cutting feed device 23, and the dividers 21 are connected to the casing 24a via side plates 28, etc.
attached to the side.

The cutting feed device 23 has a pair of left and right feed rollers 30 supported by a vertical shaft 29, and a star-shaped cutting blade 31 is attached to the lower end of each feed roller 30 so as to cut the vicinity of the root of the maize C. It is being Each vertical shaft 29 is rotatably supported by an upper transmission case 32 and a lower bearing member 33 mounted on the front surface of the casing 24a.
They are driven in mutually opposite directions in conjunction with the rotary shaft 35 of the flywheel via a transmission mechanism in 2 so as to transport the harvested maize C rearward while falling over.

Among the left and right feed rollers 30, the left feed roller 3
0A is located near the fixed blade 38 of the shredding device 24, which will be described later, and includes a cylindrical body 51 fixed to the vertical axis 29 and the cutting blade 31, and an eccentric cylindrical body 52 inside the cylindrical body 51.
and a plurality of protrusions 53 provided on the cylindrical body 51 so as to be slidable in the radial direction.

While the cylindrical body 51 is concentric with the vertical axis 29,
The eccentric cylindrical body 52 disposed between them has an axis P
is eccentric toward the front of the vertical axis 29, and this eccentric cylindrical body 52 is fixed to the transmission case 32 side.

The protrusion 53 can freely protrude and retract from the outer circumferential surface of the cylindrical body 51, and its inner end is pressed against the eccentric cylindrical body 52 via a resilient member 54 such as a plate spring.
When the protrusion 53 rotates, the inner end of the protrusion 53 rotates along with it while slidingly contacting the outer peripheral surface of the eccentric cylindrical body 52, sinks into the cylindrical body 51 on the fixed blade 38 side (rear side), protrudes to the maximum on the front side, and rotates from the front side to the right. It also protrudes toward the feed roller 30B side. That is, the feed roller 30A has the vertical axis 29
A cylindrical body 51 that is rotatably driven around the cylindrical body 51, a plurality of circumferential protrusions 53 that are slidably penetrated through the cylindrical body 51 in a radial direction, and a plurality of protrusions 53 that are disposed within the cylindrical body 51 and that are slidable in the radial direction. The eccentric cylinder 52 has a compressed eccentric cylinder 52, and the eccentric cylinder 52 has a protrusion 53 that rotates with the cylinder 51 as the cylinder 51 rotates at a position opposite to the scraper 55 on the rear side. It is fixedly arranged at an eccentric position so as to protrude maximum from the cylindrical body 51 at the front side where it completely immerses into the cylindrical body 51 and starts contacting with the maize. Therefore, the right feed roller 30
The protrusion 53 protruding on the B side performs a maize feeding function together with the right feeding roller 30B.

55 is a scraper fixed to the rear end of the casing 24a or the divider 21, the tip of which is close to the outer peripheral surface on the rear side of the left feed roller 30A, and the scraper 55 is a scraper that wraps around or adheres to the cylindrical body 51; Weeds and the like are peeled off and guided to the supply port 37. When the protrusion 53 faces the scraper 55, it is in a recessed state, and there is no possibility that they will collide.

The right feed roller 30B has an elastic protrusion member 5 on its outer peripheral surface.
6. This protrusion member 56 is formed of metal or synthetic resin, and is provided so as to elastically protrude and retract into the cylindrical body 51.

That is, a plurality of substantially triangular protruding members 56 are provided on a cylindrical body 51 fixed to the cutting blade 31 so as to be freely protrusive and retractable in the radial direction, and a supporting member 57 fixed to the vertical axis 29 is provided in the cylindrical body 51. An elastic body 58 such as a coil spring is disposed between the support member 57 and each protrusion member 56, so that the elastic body 58 always presses the protrusion member 56 in the radially outward direction.

The right feed roller 30B can always accurately feed the right feed roller 30B due to the resiliently protruding protrusion member 56 even if the amount of maze between it and the left feed roller 30A increases or decreases.

Although the protrusion 53 of the left and right feed roller 30 and the protrusion member 56 are out of phase, they may be matched in phase so that they face each other between the vertical shafts 29, and the protrusion portion of the cutting blade 31 is arranged at eight locations. In contrast, although there are six protrusions 53 and six protruding members 56, they may be the same number or any other number.

In the shredding device 24, a blow-up chute 26 is connected to the upper wall of the casing 24a, and a square hole-shaped supply port 3 is provided below the rotating shaft 35 in the front wall of the casing 24a.
7 is formed, and an L-shaped fixed blade 38 is attached to the inner surface along the edge of the supply port 37. Of course, this fixed blade 38 is attached to the flywheel 2.
It is provided across the rotation direction side and the lower edge side of 5.

The flywheel 25 is rotatably supported within the casing 24a by a rotating shaft 35, and a movable blade 39 is attached to the front surface of the flywheel 25, and blow-up blades 40 are provided radially projecting from the outer periphery. ing. The movable blade 39 is used to shred the maize C supplied into the casing 24a from the supply port 37 between it and the fixed blade 38, and is fixed to a mounting base attached to the flywheel 25 with bolts. has been done.

The rotating shaft 35 is interlocked and connected to an input shaft 42 mounted on the rear wall of the casing 24a through a winding transmission mechanism 41, and the input shaft 42 is connected to the rear PTO shaft of the traveling vehicle 2 through a universal joint shaft. 43 in a detachable manner.

The mounting frame 27 is mounted eccentrically in the lateral direction on the rear surface of the casing 24a.
is detachable from the three-point linkage mechanism 17 of the vehicle 2.

The blow-up chute 26 is rotatable around a vertical axis with respect to the casing 24a, and can change the direction of discharge of shredded maize.
By removing , it can be bent freely around the pivot 62 .

The blow-up chute 26 has an arcuate shape and its inner peripheral surface side can be opened and closed. That is, as shown in FIGS. 1 and 5, the blow-up chute 26 has a pair of guide grooves 64 formed in a chute body 63 having a U-shaped cross section, and a flexible cover plate 65 is inserted into the guide grooves 64 from the upper end of the chute. A threaded rod 66 welded to the lower end of the cover plate 65 passes through a bracket 67 fixed to the lower part of the chute body 63, and the nut 6
The cover plate 65 is fixed by screwing the holes 8 together.

By configuring the blow-up chute 26 as described above, even if the inside is clogged with shredded maize, it can be removed by simply pulling out the cover plate 65 upward, eliminating the inefficient work of poking it with a stick as in the past. It is not necessary to do this, and the shredded maize can be
It no longer accumulates inside. Incidentally, the blow-up chute 26 may have a structure in which a cover plate 65 is superimposed on the inner peripheral surface side of the chute main body 63 having a U-shaped cross section and secured with screws.

(Effect of the invention) According to the invention described in detail above, the axis P of the eccentric cylindrical body 52 is aligned with the longitudinal axis of the cylindrical body 51 so that the protrusion 53 protrudes maximum on the front side and sinks into the cylindrical body 51 on the rear side. 29, and the shredding device 24 is provided with a scraper 55 that is close to the rear side of the outer peripheral surface of the cylindrical body 51 in which the protrusion 53 is recessed. It is possible to more reliably take in the leaves of maize C that protrude to the rear side, and it is possible to avoid colliding with the scraper 55 by completely immersing the inside of the cylindrical body 51 on the rear side. This prevents maize leaves, weeds, etc. from wrapping around and adhering to the outer peripheral surface of the maize, and also removes maize berries that get between the protrusions 53. Therefore, the maize feeding function of the protrusions 53 is improved. can be fully utilized to ensure reliable feeding.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the present invention, in which FIG. 1 is an overall sectional side view, FIG. 2 is an overall sectional plan view, FIG. 3 is an enlarged sectional plan view of main parts, and FIG. FIG. 3 is a cross-sectional view taken along the - line in FIG. 3, FIG. 5 is an exploded perspective view of the lower part of the blow-up chute, and FIG. 6 is a cross-sectional plan view showing a conventional example. 3... Maize harvester, 23... Cutting feeder, 24... Shredding device, 29... Vertical shaft, 30...
Feed roller, 31...cutting blade, 37...supply port,
38...Fixed blade, 53...Protrusion, 55...Scraper, 56...Protrusion member, P...Axis center.

Claims (1)

[Claims for Utility Model Registration] A pair of cutting blades 31 are arranged at the lower front of the shredding device 24, and a pair of feed rollers above each cutting blade 31 feeds the cut maize C to the shredding device 24. 3
0, a plurality of protrusions 56 in the circumferential direction are provided on the outer peripheral surface of one feed roller 30B, and the other feed roller 30A is rotationally driven around the vertical axis 29. A plurality of circumferential protrusions 53 are slidably penetrated in the radial direction, and the cylindrical body 5
1, and an eccentric cylinder 52 with a protrusion 53 slidably pressed against the eccentric cylinder 5.
In this maize harvester, a protrusion 53 that rotates along with the rotation of the cylindrical body 51 is fixedly arranged at an eccentric position relative to the cylindrical body 51 so as to protrude and retract from the cylindrical body 51. is located approximately in front of the vertical axis 29 of the cylindrical body 51 so that the protrusion 53 protrudes maximum on the front side and is retracted into the cylindrical body 51 on the rear side, and the shredding device 24 is provided with the cylindrical body 51 in which the protrusion 53 is recessed. A maize harvester characterized in that a scraper 55 is provided close to the rear side of the outer peripheral surface.