JPH0347Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an improvement of a transmission device in a threshing machine.

BACKGROUND TECHNOLOGY In a threshing machine mounted on a combine harvester, generally, as shown in Fig. 6, a No. 4 funnel is provided at the rear of the handling chamber (i), and the grains etc. are discharged from the handling chamber (i) together with the grain culm. (Scattered No. 4) is collected and returned to the sorting section C below the handling room A. In addition, a gear case for driving each part of the threshing machine is installed in the lower part of the fourth funnel, and the power to the handling cylinder is introduced from the rear side of the handling chamber from the engine through the gear case. known and used.

Problems that the invention attempts to solve However, in the structure as described above,
Waste, grains, etc. are discharged from the handling room A along with the grain culms.
The particles accumulate or get caught on the gear case ho and its accessories, gradually accumulating and blocking the No. 4 funnel, which not only prevents the No. 4 items from returning onto the sorting section. There is a problem that the No. 4 material accumulated on the gear case ho, etc. is thrown out of the machine together with the waste culm by the waste straw chain, resulting in increased grain loss.If it gets worse, the gear case ho is thrown out between the end of the feed chain and the beginning of the waste straw chain. Coupled with the fact that it is located below the discharge culm joint, it has the disadvantage that it obstructs the smooth succession and conveyance of the discharge culm, resulting in troubles such as conveyance clogging. Particularly in high-horsepower threshing machines, the gear case itself becomes large, which doubles the above-mentioned drawbacks.

As a means to solve the problem, the present invention places the gear case that drives each part of the threshing machine on the outside of the fourth funnel, and branches the power transmission case to the handling cylinder and the power transmission case to the feed chain from the gear case. In addition, the above-mentioned problem was solved by arranging the power transmission case to the handling barrel close to the rear side plate of the handling chamber and the power transmission case to the feed chain close to the grain board side of the No. 4 funnel. This is an attempt to solve the problem.

Function The gear case that drives each part of the threshing machine is placed on the outside of the No. 4 funnel, so the internal space of the No. 4 funnel is widened, and this allows the waste, long straw, and grains discharged from the handling chamber along with the culm to be removed. The No. 4 materials such as grains are reliably dropped onto the sorting section through the No. 4 funnel and are separated in the sorting section.

Embodiment FIG. 5 is a perspective view showing the arrangement of each working part of a combine harvester. A paddy tank 2 is mounted approximately in the center of one side of the traveling machine body 1 having a crawler traveling device A in the machine traveling direction. A driving operation unit 3 is located at the front and an engine 4 is located at the rear.
Further, a threshing section 5 is arranged on the other side. Reference numeral 6 indicates a pre-processing conveyance section, and 7 indicates a cutter for post-processing of culms.

1 and 2 are a side view and a plan view showing the internal structure of the threshing section 5, in which a sorting section 10 swings via a swing arm 10a below a handling chamber 9 in which a handling drum 8 is mounted on an axis. It is set up freely. 9a is a receiving net, 9b is a front side plate of the handling room, 9c is a rear side plate of the handling room, 11 is a feed chain, 12 is a waste straw chain, 13 is a grain culm supply port, and 14 is a grain culm discharge port (4th port). Reference numeral 15 denotes a fourth funnel located at the rear of the handling chamber 9, which is composed of a rear side plate 9c of the handling chamber, a side plate 5a of the dust removal chamber, and a grain flow plate 16, and its lower opening 15a faces above the sorting section 10. . F is a winnowing machine, 17 is the first spiral, 18 is the second spiral, 19 is a suction fan, 20 is a dust removal chamber, and after the grain is threshed in the handling room 9, it is removed by the sorting section 10.
After the grains are sorted and separated by the first spiral 17 and transferred to one side of the machine body, the grains are fried and stored in the paddy tank 2 by the grain-lifting cylinder 21. Also, for second items such as ear cuts, use the second spiral 1.
In step 8, the particles are similarly transferred to the first side of the machine, and returned to the sorting section 10 in the second reducing cylinder 22, where they are re-sorted. On the other hand, straw waste and the like are sucked in by a suction fan 19 and discharged outside the machine.

Reference numeral 23 denotes a gear case that drives each part of the threshing machine, and as shown in FIGS. 2 and 3, this gear case 23 is located on the outside of the fourth funnel 15, and connects the handling chamber side plate 24, the fan case 19a of the suction fan 19, and the dust exhaust. The gear case 23 is disposed in a space 25 surrounded on three sides by the chamber side plate 5a, and the gear case 23 is connected to the grain barrel 21 on one side via a connecting member 26 and fasteners 27, 28.
The other sides are respectively fixed to the fan case 19a. Similarly, the dust removal chamber side plate 5 is attached to the inside of the gear case 23 by the mounting seat 29 and the fasteners 30 and 31.
It is integrally fixed to a and has a strong mounting structure. 32 is a power transmission case to the handling cylinder 8, and 33 is a power transmission case to the feed chain 11. These power transmission cases 32 and 33 are branched from the gear case 23, and one power transmission case 32 is attached to the rear side plate 9c of the handling chamber. On the other hand, the other power transmission cases 33 are arranged in parallel in the lower part of the No. 4 funnel 15 in close proximity to the grain flow plate 16 side. The front end of the power transmission case 32 is fixed to the rear side plate 9c of the handling chamber, and the front end of the power transmission case 33 is fixed to the dust exhaust chamber side plate 5a on the feed chain 11 side.
These power transmission cases 32 and 33 provide a structure in which the strength of the threshing machine frame is greatly increased. 34 is a power transmission case to the exhaust chain 12 horizontally suspended above the No. 4 funnel 15. 35 is the input shaft of the gear case 23;
5a is an input pulley, 36 is a feed chain output shaft, 37 is an exhaust chain chain drive sprocket, 3
8 is a handling cylinder drive chain, 39 is a shifter gear, 4
0 is a bevel gear, 41 is a speed change lever, 42 is an output pulley of the engine 4, 43 and 44 are respective transmission belts, 45 is a transmission chain, 46 is a speed change shaft, 47 is an output shaft, and 48 is an intermediate shaft.

In the configuration as described above, power from the engine 4 enters the input shaft 35 of the gear case 23 via the pulleys 42, 35a and the transmission belt 43, and is transmitted to the transmission shaft 46, the bevel gears 40, 40, the output shaft 47, and the handling cylinder drive chain. 38 and is transmitted to the handling cylinder shaft 8a to rotate the handling cylinder 8. On the other hand, in addition to the power transmission system to the handling cylinder 8 side, the input shaft 3 of the gear case 23
Power is transmitted from the feed chain 11 to the feed chain output shaft 36 by the gear transmission of the gear group G.
to drive. In addition, the power transmission case 3 is transmitted through the chain transmission from the exhaust chain drive sprocket 37.
The power transmitted to the input shaft 34a of No. 4 drives the exhaust chain 12.

Now, the waste culm after being threshed in the handling room 9 is discharged from the grain culm discharge port 14, and is also discharged from the straw removal chain 12.
After being transported to the rear of the machine, it is cut into pieces by the cutter 7 and released into the field. By the way, when the culms are discharged from the handling chamber 9, some of the grains that have been once threshed in the handling chamber 9 are discharged as small grains and scattered grains together with waste, long straw, etc. The fourth item falls into the fourth funnel 15 under its own weight and is collected, and the lower opening part 1
5a to the sorting section 10 for re-sorting, but unlike the conventional funnel shown in FIG. Since the power transmission case 32 is disposed close to the rear side plate 9c of the handling chamber, and the power transmission case 33 to the feed chain 11 is disposed close to the grain flow plate 16, the inside of the fourth funnel 15 is The falling space is wide and held in a large space. Therefore, the fourth item is reliably placed in the sorting section 10
Fall back on top. In addition, grains, scraps, long straw, and other materials do not accumulate or become clogged in the fourth funnel 15, unlike conventional systems in which a gear case hole is provided in the fourth funnel. Not only is there less loss, but the culm transport is always carried out smoothly.

Note that since there is no obstacle such as the gear case 23 below the transfer of the waste culm between the end of the feed chain 11 and the start of the waste straw chain 12, the transfer and conveyance of the waste culm is performed reliably.

Effects of the invention As mentioned above, the present invention drives each part of the thresher in a threshing machine in which the power from the handling barrel is introduced from the rear side of the handling chamber via the No. 4 funnel formed at the rear of the handling chamber. A gear case is placed on the outside of the fourth funnel, and the power transmission case to the handling cylinder and the power transmission case to the feed chain are separated from the gear case, and the power transmission case to the handling cylinder is placed on the rear side plate of the handling room. Since the power transmission cases to the feed chain are placed close to the grain plate side of the No. 4 funnel, the space inside the No. 4 funnel can be made wider and larger without changing the dimensions and size of the No. 4 funnel itself. This makes it possible to ensure that grains, scraps, long straw, etc., fall back into the sorting section without accumulating in the funnel, and reduce grain loss. However, it has the advantage that the inheritance and conveyance of the culm can always be maintained well, and the threshing operation can be carried out smoothly without any conveyance troubles.

[Brief explanation of the drawing]

Figure 1 is a longitudinal side view of a threshing machine equipped with the present invention, Figure 2 is a cross-sectional plan view, Figure 3 is a developed view showing the internal structure of the gear case, Figure 4 is a longitudinal front view of the threshing machine, FIG. 5 is an overall perspective view of a threshing machine equipped with the present invention, and FIG. 6 is a cross-sectional plan view of a conventional threshing machine. In the figure, 8 is a handling barrel, 9 is a handling room, 11 is a feed chain, 15 is a fourth funnel, 23 is a gear case, 32
33 is a power transmission case to the handling cylinder, and 33 is a power transmission case to the feed chain.

Claims (1)

[Scope of utility model registration request] In a threshing machine in which the power from the handling barrel is introduced from the rear side of the handling chamber via the No. 4 funnel formed at the rear of the handling chamber, the gear case that drives each part of the threshing machine is placed on the outside of the No. 4 funnel. The power transmission case to the handling cylinder and the power transmission case to the feed chain are separated from the gear case, and the power transmission case to the handling cylinder is placed on the rear side plate of the handling room, and the power transmission case to the feed chain is placed in the fourth case. A transmission device for a thresher, characterized in that the transmission device is disposed close to the grain flow plate side of the funnel.