JPH0135633Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a feed roller device for a maize harvester that feeds maize to a shredding device.

The feed roller of a conventional maize harvester has a plurality of circumferential protrusions protruding from the outer circumferential surface of the cylinder, and the maize cut by the cutting blades below the protrusions is transferred to the shredding device. Since all the protrusions are at the same height and are widely spaced apart in the circumferential direction, the maize cannot be held between the pair of feed rollers, which reduces maize feeding efficiency. This may result in a decrease in the amount of water or make it difficult to feed the material.

Therefore, it is possible to narrow the spacing between the protrusions, but if the spacing is narrow, the maize will be reliably caught between the pair of feed rollers, but the maize will be caught more often by the protrusions, and the maize will also be caught. damage will also increase. In particular, maize has different thicknesses, and when the maize is thick, it becomes difficult for the maize to enter between the pair of feed rollers.

In view of these conventional problems, the present invention is designed to ensure that even if the maize is thick and thin, the maize can be bitten by the protrusions by providing an elastic body at least between the protrusions. The purpose of this invention is to provide a feeding roller device for a maize harvester, which is characterized by a feeding roller that rotates around a vertical axis placed above each of a pair of cutting blades. In the device that feeds the maize to the shredding device behind it, each of the feed rollers has a conveying protrusion made of a rigid material on the outer circumferential surface of the roller body and is spaced apart in the circumferential direction along the roller axis direction. be prepared,
An elastic body is provided between each protrusion, which elastically deforms in the radial direction depending on the thickness of the maize sandwiched between the pair of roller bodies.

Embodiments of the present invention will be described below with reference to the drawings.

In the first embodiment shown in FIGS. 1 and 2,
The maize reaping device 1 includes a traveling vehicle 2 typified by a tractor, a maize harvester 3, and a harvest storage container (not shown) mounted on the bonnet of the traveling vehicle 2.

The traveling vehicle 2 is a forward-reverse 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 left and right dividers 21, and they are attached to the casing 24a side via side plates 28 and the like.

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 interlocked with the rotating shaft 35 of the flywheel 25 via a transmission mechanism in the drive mechanism 2, and are driven in opposite directions to transport the harvested maize C rearward while falling over.

In the shredding device 24, the casing 24a has a blow-up chute 26 connected to its upper wall, and its front wall is located below the rotating shaft 35 and in the direction of rotation of the flywheel 25 with respect to the center of the cutting feed device 23. A square hole-shaped supply port 37 is formed so as to be slightly eccentric on the opposite side, 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 provided astride the rotation direction side and the lower edge side of the flywheel 25.

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 with a fixed blade 38, and is fixed to a mounting base attached to the flywheel 25 with bolts. The movable blade 39 is inclined by a predetermined angle so that the radially outer side lags behind the rotational direction of the flywheel 25. Therefore, the movable blade 39 cuts the maize C from the radially inward side first between the movable blade 39 and the vertical portion of the fixed blade 38.

The rotating shaft 35 is operatively connected to an input shaft 42 mounted on the rear wall of the casing 24a through a wrap-around transmission mechanism 41, and the input shaft 42 is connected to a rear PTO shaft 43 of the traveling vehicle 2 through a universal joint shaft. It is detachably connected to.

The mounting frame 27 is attached to the rear surface of the casing 24a so as to be slightly eccentric in the lateral direction.
is detachable from the three-point linkage mechanism 17 of the vehicle 2.

Each of the feed rollers 30 has a roller body (sometimes referred to as a cylinder) 45 which is a circular cylinder fixed to the vertical shaft 29 and the cutting blade 31, and has an outer circumferential surface 4.
A plurality of protrusions 46 are provided on 5a at equal intervals in the circumferential direction. Each of the protrusions 46 is formed into a blade shape using a band plate made of a rigid material, is long in the axial direction, and extends over the entire length of the cylindrical body 45 in the embodiment. It is fed into the supply port 37 of the cutting device 24.

The protrusions 46 of the left and right feed rollers 30 have overlapping rotation trajectories at their radially outer ends, and are rotated synchronously so that the protrusions 46 on one side are located in the center between the protrusions 46 on the other side. However, maize C has thick stems,
Since there are also branches and leaves, feeding is possible without overlapping the rotation loci of the protrusions 46.

Further, on the outer circumferential surface 45a of the feed roller 30, an elastic body 47 made of rubber, sponge, or the like is provided between each of the protrusions 46. The elastic body 47 can be elastically deformed to expand or contract in the radial direction according to the thickness of the maize C held between the pair of feed rollers 30, and has a smaller diameter than the tip of the protrusion 46.

The left and right feed rollers 30 rotate in opposite directions to cut the maize C near the root with a cutting blade 31, and then bite into the maize C with the left and right protrusions 46. At this time, the maize C is held between the left and right protrusions 46 and compresses the elastic body 47 of one of the feed rollers 30, and when it passes through this state, it is moved in the radially outward direction by the restoring force of the elastic body 47. Even if the maize C is thick or thin, the maize C is reliably sandwiched between the pair of feed rollers 30 through the elastic deformation of the elastic body 47.
The feeding action by the protrusion portion 46 is ensured. Also,
The maize C gets almost no longer caught on the protruding ridges 46.

The second feed roller 30 shown in FIGS. 3 and 4
In the embodiment, the protrusion 4 provided on the cylindrical body 45
6 is formed by bending an iron plate at an acute angle, and the elastic body 47 between each protrusion 46 has the same diameter as the tip of the protrusion 46, and the rotation locus of the protrusion 46 of the left and right feed roller 30 are overlapping, and therefore both elastic bodies 47 are rolling in a press-contact state.

In the feed roller 30 of the second embodiment, since the elastic body 47 is made of a material with high elasticity, it does not prevent the maize C from biting in, but rather assists the biting in. Maze C
is separated from the feed roller 30 by elastic restoring force, thereby reliably preventing adhesion or winding of the maize C.

FIG. 5 shows a modification of the elastic body, in which the elastic body 47 is formed into a semi-cylindrical shape and is provided by adhering it on the outer circumferential surface 45a between the protrusions 46. This elastic body 47 has the following features compared to those of the first and second embodiments:
It is easier to manufacture and install, and the effect of preventing maize wrapping is the same.

FIG. 6 shows a third embodiment of the present invention, in which the feed roller 30 is provided with a protrusion 46 on the outer peripheral surface 45a of a cylindrical body 45, and a small protrusion 48 between them. A thin-walled cylindrical elastic body 47 is provided so as to surround the strips 46 and 48.

The elastic body 47 is made of rubber, and the protrusion 4
6 is formed into a substantially rectangular cylindrical shape, and the protruding portion 4
Between 6 and 6, an elastic restoring action is performed to prevent maize C from adhering or winding. The small protrusions 48 are arranged to be slightly offset from the center between the protrusions 46, so as not to collide with the protrusions 46 of the opposing feed roller 30, and to maintain the shape of the elastic body 47. Assist in sending Maze C.

According to the present invention described in detail above, each of the pair of feed rollers 30 has a transfer protrusion 46 made of a rigid material on the outer circumferential surface 45a of the roller body 45, which extends in the circumferential direction. Since they are provided at intervals, the protrusions 46 of the pair of rollers 30 can bite into the maize C and reliably send it to the shredding device 24.

Moreover, since an elastic body 47 that deforms in the radial direction according to the thickness of the maize C is provided between the protrusions 46, the compression and elastic restoring force of the elastic body 47 causes
The maize C is reliably held between the rollers 30 and fed by the conveying protrusion 46, and when the protrusion part 46 bites into the maize C, the elastic body 47 is compressed. damage will also be reduced.

[Brief explanation of the drawing]

1 and 2 are an overall side sectional view and an overall plan sectional view showing a first embodiment of the invention, and FIGS. 3 and 4 are a sectional plan view of a main part showing a second embodiment of the invention. FIG. 5 is a cross-sectional plan view showing a modified example of the elastic body, and FIG. 6 is a cross-sectional plan view showing the main portion of a third embodiment of the present invention. 3... Maize harvester, 23... Cutting feeder, 24... Shredding device, 30... Feeding roller, 3
1... Cutting blade, 37... Supply port, 45... Cylindrical body,
45a...outer peripheral surface, 46...projection, 47...elastic body, C...maze.

Claims (1)

[Claims for Utility Model Registration] A feed roller 30 rotating around a vertical axis is arranged above each of a pair of cutting blades 31, and feeds the cut maize C to the shredding device 24 behind it, Each of the feed rollers 30 has a roller body 4.
Transfer protrusions 46 made of a rigid material are provided on the outer circumferential surface 45a of the roller 5 along the roller axial direction with intervals in the circumferential direction. A feeding roller device for a maize harvester, characterized in that an elastic body 47 is provided which elastically deforms in the radial direction according to the thickness of the maize C sandwiched between the maize C.