JPH04655Y2 - - Google Patents

Description

[Detailed description of the invention] A. Purpose of the invention (a) Industrial application field This invention relates to a stalk culm conveying device in a harvester that harvests long-culm crops with relatively thick stalks, such as corn.

B. Prior Art Conventionally, there is a foliage harvester as a harvesting machine for harvesting long-culm crops with relatively thick stalks, such as corn.

This foliage harvester consists of a cutting blow-up device equipped with a chute fixed to a frame connected to a towing vehicle, a supply roll device disposed in front of the cutting blow-up device, and a stem culm conveying device disposed in front of the supply roll device. The reaping blade is mainly composed of a pair of gearing chains equipped with claws, and a cutting blade that rotates in conjunction with a front sprocket that the gearing chains engage with.

The specific configuration of the stem culm conveying device of the forage harvester is as follows.

In other words, a sprocket is disposed on a transmission located immediately below the supply roll device and is fixed to a pair of left and right shafts that are driven in opposite directions, and a sprocket on the driven side is disposed on the front side of the sprocket. It is constructed of a pair of left and right gearing chains that span between these front and rear sprockets and are provided with pawls that are conveyance protrusions.

The reaping blade is fixed to a shaft to which a front sprocket is fixed, located below the sprocket.

A pair of gearing chains provided on the left and right sides are driven to rotate in the same direction from the front toward the supply roll device at opposing positions.

The above gearing chains are arranged with different phases in the front and back direction so that the claws provided on the other gearing chain are located in the gaps in the longitudinal direction between the claws provided on one gearing chain at opposing positions. has been done.

In the portion where the left and right gearing chains face each other, the gap between the claws provided on one gearing chain and the claws provided on the other gearing chain is formed to the extent that the stalks of the long culm crop can be held between them. There is.

Furthermore, as another conventional technology for conveying grain culms, there is a grain culm rake conveying apparatus disclosed in Japanese Utility Model Publication No. 1983-48100.

This device has star wheels for scraping placed above the cutting device so that their tip teeth engage with each other,
One is a driving wheel, the other is a driven wheel, and immediately after the star wheel engages,
A conveying chain is provided from the lower part of the driving star wheel to the rear in the conveying direction in order to position the starting end of the pinch conveying path composed of the conveying chain and the pinching rod, and to continue conveying the grain culm after being scraped. , and a pincer provided along the conveying chain by a driven star wheel.

That is, in the conveying device, a conveying chain is spanned between a sprocket disposed immediately above the cutting device and a sprocket disposed behind the sprocket, and a driving star wheel is fixed to the rotating shaft of the front sprocket. The structure is such that a driven star wheel that meshes with the driving star wheel is disposed on the side of the driving star wheel.

When the protrusions of the driving star wheel and the driven star wheel are engaged, a gap is formed between the protrusions of the driving star wheel and the driven star wheel to sandwich the grain culm in front of the engaging portion, that is, on the cutting device side. .

C. Problems to be solved by the invention In conventional forage harvesters, the left and right cutting blades are arranged so that some of them are overlapped in the vertical direction. Cutting is completed ahead of the line connecting the centers of

At this time, the left and right gearing chains located above the cutting blade are bent along the pitch circle of the engaged driven sprocket, so there is a gap in the front and back direction between the claws provided on the left and right gearing chains. The cut long culm crop is wider than the stem diameter of the long culm crop, and the cut long culm crop cannot be held between the long culm crops. In the section up to the point where a gap is formed to hold the material, the product becomes unstable because it is not supported and leaves the conveyance path, or it becomes clogged because it is intermittently supplied to the supply roll device, and the work has to be interrupted. There was a problem.

Furthermore, in the device for conveying grain culms disclosed in Utility Model Publication No. 56-48100, a driving star wheel provided on the rotating shaft of a sprocket with which the conveying chain engages, and a driven star wheel meshing with the star wheel are used. The grain culm immediately after being harvested is
It is transported to a position where the transport chain and the clamping rod engage with the protrusion, and during transport, it is transported while being sandwiched in the gap formed by the protrusions of the driving star wheel and the driven star wheel. However, when conveying relatively thick-stalked corn with the same configuration as the above-mentioned device, the following problem occurs.

That is, by positioning the protrusion of the driven star wheel between the front and rear protrusions of the driving star wheel, a relatively thick stem is placed in the gap formed between the protrusion of the driving star wheel and the protrusion of the driven star wheel. In order to clamp the stem culm of corn etc.
The outer diameter of both the driving and driven star wheels must be increased.

However, when the outer diameter of the star wheel is made large, there is a problem that the protrusions strike the stalk culm of the corn before cutting, causing the corn to fall down and making it difficult to cut the corn smoothly.

To solve this problem, by making the outside diameter of the reaping blade larger than the outside diameter of the star wheel, the effect of hitting the base of long culm crops such as corn before harvesting can be eliminated, but the outside diameter of the reaping blade can be increased. If it is larger than the outer diameter of the star wheel, the amount of polymerization of the cutting blade will increase, and the long culm crop will be cut in front of the center of the star wheel. However, there still remains the problem that transportation in this section becomes unstable.

B. Structure of the invention A. Means for solving the problem In order to solve the above-mentioned problems, the present invention uses an endless conveyor system consisting of a pair of left and right gearing chains so that the claws wrap in front of the supply roll device. A reaping blade is disposed below a driven sprocket located on the front side of the endless transport body, concentrically with the sprocket and partially wrapped around the sprocket, and the outer circumference forms a waveform on the upper surface of the boss of the sprocket. A pair of left and right plates are fastened concentrically to the sprocket, and the stem culm of a long culm crop cut by a cutting blade is conveyed rearward with a corrugated convex portion.

B Examples 1 is a forage harvester.

2 is a shredding blow-up device, 3 is a supply roll device,
4 is the first frame, and 4A is the second frame.

5, 5A are left and right reaping blades.

A holding portion that holds a bearing 11 is fixed to the front of the second frame 4A, and the shafts 9 and 9A are fitted into the bearing 11.

A driven sprocket 8 is fitted above the shafts 9, 9A, bosses 10, 10A are fitted below, and reaping blades 5, 5A are fastened to the bosses.

A plate 7 having a corrugated outer circumference is fastened to the upper surface of the boss of the driven sprocket 8.

A holding portion for holding a bearing is also fixed to the rear of the second frame 4A, a shaft is fitted into the bearing, and a drive sprocket 12 is fitted above the shaft.

A gearing chain 6 is wound around the driving sprocket 12 and the driven sprocket 8. 6A
are claws. 14 is a wheel, and 15 is a chute.

13 and 13A are protectors for the transport section and the reaping section.

C. Effect: As the harvester moves in the F direction, the long culm crops located within the working width A of the reaping blades that rotate in opposite directions are cut off at their bases by the reaping blades.

The cut stem culms of the long-culm crop are transported by the convex portions of the corrugated plates toward the position where the plates face each other, which is the conveying path of the conveying device, and then formed by the left and right plates. sandwiched with a convex part between the concave parts,
It is transported towards the transport path of the gearing chain.

The ends of the stem culm conveying section of the left and right plates, that is, the ends of the section where the stem culms are held and conveyed with a convex part between the concave parts formed by the plates, are located at the ends of the left and right sprockets to which the plates are fastened. Since it is located closer to the supply roll device than the line connecting the centers, the gap between the left and right claws of the gearing chain is constant at this terminal end, and it overlaps with the section where the stem culm can be held and transported. become.

As a result, the stem culm, which is pinched and conveyed with the convex part between the concave parts of the plate, is smoothly transferred to the pinched and conveyed section of the left and right claws provided in the gearing chain. In a harvester that harvests long culm crops and is equipped with an endless conveyor body equipped with a reaping blade, the outer diameter is formed on the upper surface of the boss of the front left and right sprocket that the endless conveyor engages with to be slightly smaller than the reaping blade. A plate body with a corrugated outer circumference was fastened concentrically with the sprocket and in phase with the corrugated recesses facing each other at opposite positions, so that the length of the base cut by the reaping blade was fixed. Almost at the same time as cutting, the culm crop is guided by the concave part of the plate body into the gap formed between the concave parts of the left and right plates, and moreover, the culm crop is guided by the concave part of the plate body into the gap formed between the concave parts of the plate body by the convex part in the front and rear direction of the plate body. While being held, the long culm crop is smoothly conveyed to a position where it can be held and conveyed by the endless conveying body, and the long culm crop is held and conveyed approximately in the center of the conveying route, so it is held in a stable posture.
Smooth transportation becomes possible.

That is, it is possible to eliminate problems such as the cut long culm crop falling out of the conveyance path, being intermittently supplied to the supply roll device, and causing clogging in the supply roll device.

Furthermore, the outer periphery of the reaping blade and the corrugated plate can be made small, and the area around the reaping section can be simplified.

[Brief explanation of drawings]

FIG. 1 is an overall side view, FIG. 2 is an enlarged plan view of a main part with a portion of the same as the above cut away, and FIG. 3 is an enlarged cross-sectional view along the - line. 3... Supply roll device, 6... Gearing chain, 7... Plate body, 8... Driven sprocket.

Claims (1)

[Scope of utility model registration request] A machine frame connected to a towing vehicle, a shredding blow-up device equipped with a chute arranged on the machine frame, a supply roll device disposed in front of the shredder blow-up device, and a shredding blow-up device provided in front of the shredder blow-up device; A pair of left and right endless conveyors,
Below the front sprockets of the left and right endless conveyors,
In a harvester for harvesting long-culm crops with relatively thick stalks such as corn, the harvester is provided with a reaping blade that is arranged concentrically with the sprocket and rotates in synchronization with the sprocket, and the front side that the endless conveyor engages with. On the upper surfaces of the bosses of the left and right sprockets, place a plate whose outer diameter is slightly smaller than the reaping blade and whose outer periphery is corrugated, concentrically with the sprocket, and at opposing positions where the corrugated recesses face each other. A stem culm conveying device for a harvester, characterized in that the stem and culm conveying device are fastened in phase with each other.