JPH048741Y2 - - Google Patents

Description

[Detailed description of the invention] (a) The present invention is based on a grain culm lifting claw of a grain culm pulling body attached to a combine harvester or a binder, and a grain culm rake body stretched from the top of the cutting blade to the back of the tiller. claws,
The present invention relates to a grain culm transport claw in a harvester, such as a transport claw of a grain culm transport device that transports and supplies harvested grain culms to a rear threshing device.

(b) Prior Art Conventionally, synthetic resin grain culm conveying claws with a U-shaped cross section that are attached to a lifting chain, a scraping chain, or a conveying chain of a harvesting machine are already known.

(c) Problems to be solved by the invention Since the known grain culm conveying claw was constructed in one piece from the base to the front end, it was substantially inflexible and deformed or broke when a high load was applied. .

Also, when a high load was applied, the grain culms were torn off, and the ears were forcefully squeezed to make them shed grain.

(d) Means for solving the problem The present invention is made of a synthetic resin that has a U-shaped cross section, the bottom side of which serves as the action part, and is flexible but does not substantially bend under appropriate loads. In the grain culm conveying claw made by the company, the working part side of the grain culm transporting claw is configured so that the wall thickness on the working part side is thick on the base side and gradually becomes thinner on the tip side, and a plurality of notches are provided on the non-working side. The depth of the notch on the base side is deep, and the depth on the distal side is gradually shallower, and the notch is configured so that it gradually bends in response to an excessive load. The grain culm conveying claws are made to bend when the grain culm is transported, thereby preventing the grain culm transporting claws from being deformed or broken, and tearing or shedding caused by applying an impactful pressing force to the grain culms or ears. The above-mentioned problem was solved.

(E) Action When the grain culm transport claw is forcibly moved to pull up, scrape or transport the grain culm, and a high load is applied to the grain culm transport claw during transport, the grain culm transport claw adapts to the load. Since the V-shaped notch on the non-active side curves in the opposite direction to the conveying direction, the load is alleviated, the conveying claws are not deformed or broken, and the impact on the grain culms and ears is also alleviated. Culm breakage and grain shedding can be prevented.

(f) Embodiment To explain an embodiment of the present invention about a combine harvester shown in the drawings, 1 is a threshing device mounted on a combine machine base having a traveling device 2, and in front of it is a reaping device 3 and a grain harvester. A pre-processing device consisting of a culm conveying device 4 is mounted so as to be tiltable up and down, and the reaping device 3 has a cutting device 5..., a grain culm pulling device 6...,
The grain culm conveying device 4 is composed of a stock cutting chain 7 . . . and a stalk cutting body 8 . . .
and a panicle side conveyor 11.

Further, as shown in FIG. 2, the grain culm pulling body 6 has a chain 15 stretched between the driving sprocket 13 at the upper part of the case 12 and the idler wheel at the lower part.
The bases of a large number of lifting pawls 6 . Standing and protruding from 12,
When it passes the upper end of the guide rail 18, it collapses and is stored in the case 12.

As shown in FIG. 3, the working part of the pulling claw 16 (the front side in the direction of movement in the standing posture) has a flesh pressure that gradually decreases from the base to the tip, and there are a plurality of parts on the non-working side. V-shaped notch 17
... are provided, and these notches 17 are deep on the base side and gradually become shallower on the distal side.

In the above-mentioned combine harvester, the grain culm that has been split by the weeding body 5 is raised by the grain culm pulling body 6, and the raising claws 16 rotate while standing up and protruding from the lower end of the raising body 6. The grain culm is locked and raised in a substantially horizontal position to raise the grain culm.

At that time, if there is a large amount of grain culm, or if the grain culm has become heavy due to water absorption during lodging and a large load is applied to the lifting claws 16, the lifting claws 16... will reduce the meat pressure on the tip side. It is thinner than the base side, and has a notch 17 on the non-active side, so the tip side bends slightly downward, and when the load returns to normal, it returns to its original shape. The lifting claw 16
Deformation and breakage of ... can be prevented.

In addition, due to the bending of the pulling claws 16, the impactive pressing force on the grain culm is reduced, thereby preventing culm breakage and grain shedding.

In addition, the stem part raking body 8 and the ear side conveying body 11 have a raking claw 19 or a conveying claw 20 having the same wall thickness as the lifting claw 16 and having a notch 17 on the stretched chain. As shown in FIGS. 4 and 5, the stem scraper 8 has a chain 22 stretched between the drive sprocket at the rear and the idler wheel 21 at the front, and a guide on the inside of the working side. By providing a rail 23, the scraping pawl 19 is configured to stand up and protrude outside the case 24, and the idler wheel 21
A shaft 2 rotatably supported via a sleeve 25
A pair of upper and lower claw guides 27, 27 having an L-shaped cross section and a U-shaped metal 28 are fitted to both ends of the shaft 6, and in this state, the shaft 26 is loosely fitted into the elongated holes 30, 30 of the case 24. A support shaft 31 fixed to the U-shaped metal 28 and protruding from the rear surface is held by a holder 32 integrated with the case 24 so as to be movable back and forth.
3, the idler wheel 21 is pushed forward so as to tension the chain 22, and when the scraping resistance increases, the spring 33
The idler wheel 21 moves backward while compressing the idler wheel 21, and at this time, the pawl guides 27, 27 advance and retreat through the shaft 26 while maintaining a constant distance from the idler wheel 21.

Since a limit switch 34 is provided at the rear of the support shaft 31, when the scraping resistance becomes excessive and the support shaft 31 retreats beyond the limit, the limit switch 34 detects this and switches the limit switch 34 to the control section. The warning light 35 or alarm lamp will issue a warning, so either remove the cause of the overload or reduce the traveling speed of the machine to reduce the amount of grain culm supplied.

Furthermore, when the idler wheel 21 moves forward or backward due to load fluctuations, the pawl guides 27, 27 maintain the distance between them and the idler wheel 21 at the optimal condition set initially, so that the chain does not come off and the scraping pawl 19 becomes inverted. In addition, when an excessive load is applied to the rake claws 19, it bends in the same way as the above-mentioned raising claws 16, 16, and prevents deformation and breakage, as well as culm breakage and grain shedding. be able to.

(g) Effect of the invention As mentioned above, the cross section of the invention is U-shaped,
In a grain culm conveying claw made of synthetic resin whose bottom side serves as the action part and which is flexible but does not substantially bend under an appropriate load, the thickness of the action part side of the grain culm transport claw is the base. The side is thick and the distal side is configured to be gradually thinner, and a plurality of notches 17 are provided on the non-active side, and the depth of these notches is set to be deep on the base side and sequentially thinner on the distal side. Since it is formed to be shallow and gradually bends under excessive loads, when carrying grain culms, the grain culm carrying claws do not bend under the appropriate carrying load and the grains are kept in an almost constant posture. Although the culm can be secured and transported accurately, if an excessive load is applied,
The thickness of the carrying claw is thick on the working side and gradually becomes thinner on the tip side, and the plurality of notches provided on the non-working side are deep on the base side and gradually shallow on the tip side. Combined with this, the material is deflected almost uniformly, thereby preventing deformation, cutting, cutting, and shedding of the conveying claws.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is a partially omitted perspective view of the combine harvester, Figure 2 is a cross-sectional view of the upper part of the grain culm puller, Figure 3 a is a sectional view taken along line A-A in Figure 2, and b is a cross-sectional view taken along line B-B in Figure 2. 4 is a plan sectional view of the front part of the stem part scraping body, FIG. 5 is a longitudinal sectional view of the same as above, and FIG. 6 is a plane sectional view of the front part of the conventional stem part scraping body. 6... Grain culm triggering body, 8... Stem scraping body, 11...
... panicle side conveyor, 16 ... raising claw, 17 ... notch part.

Claims (1)

[Scope of utility model registration request] A grain culm transporting claw made of a synthetic resin having a U-shaped cross section, the bottom side of which serves as an action part, and having flexibility but not substantially bending under an appropriate load. The wall thickness on the active part side is thick on the base side and gradually thinner on the distal side, and a plurality of notches 17 are provided on the non-active side, and the depths of these notches 17 are set such that the thickness on the base side is A grain culm conveying claw for a harvester, characterized in that the claws are formed to be deep, and gradually become shallower toward the tip, and are configured to gradually bend in response to an excessive load.