JPH0348Y2 - - 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. 5, a No. 4 funnel is provided at the rear of the handling chamber (i), and the grains, etc. ( 4) is collected and returned to the sorting section C located 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 aims to solve However, in the case where the gear case ho is installed in the fourth funnel, the gear case ho has an assembly structure in which it is supported by the rear side plate of the handling chamber and the left and right dust removal chamber side plates. Therefore, when assembling the gear case,
Assembling is required in a narrow space surrounded on three sides by the above three side plates, and the heavy weight of the gear case HO not only makes the assembly work very troublesome, but also requires support for the gear case HO. There were problems such as the side plates (chi, ri, ri) being thin and lacking in strength.

As a means to solve the problem, the present invention has been developed by installing a lifting cylinder for transporting the grains after sorting into the paddy tank for frying and a suction fan for removing dust on one side of the machine, and This system attempts to solve the above problems by integrally mounting the gear case that drives each part of the thresher in the space formed between the tube and the fan case of the suction fan to the grain lifting tube and fan case. be.

Function: The gear case that drives each part of the threshing machine is integrally attached to the grain lifting cylinder, which is functionally robust and is firmly fixed to the traveling machine body, so the attachment strength of the gear case is increased. In addition, since the grain lifting cylinder, gear case, and fan case are connected in an integral series, they reinforce each other and maintain the overall strength of the input shaft part. Since it is arranged in the 4th funnel, it is easy to assemble, and the space in which the 4th object falls is kept wide.

Embodiment FIG. 4 is a perspective view showing the arrangement of each working part of a combine harvester. A paddy tank 2 is mounted approximately at 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 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, side plates 5a, 5a of the dust removal chamber, and a grain board 16, and its lower opening 15a faces above the sorting section 10. There is. F is Karachi, 17 is Ichiban Spiral, 1
8 is a second spiral, 19 is a suction fan installed in the fan case 19a, and 20 is a dust removal chamber.The threshed grains after being threshed in the handling chamber 9 are sorted and separated in the sorting section 10, and the grains are sorted and separated. After being transferred to one side of the machine body by the first spiral 17, the grains are fried and stored in the paddy tank 2 by the grain-frying cylinder 21 installed upright near the rear end of the side plate 9d of the handling room.

By the way, as shown in FIGS. 1 and 3, the grain lifting cylinder 21 has a robust structure consisting of a thick cylinder body 21b containing a screw conveyor 21a.
Although not shown, its lower end is fixed to the traveling body, and its upper end is fixed to the handling room side plate 9d via a bracket 24. Now, the second products such as ear cuts are similarly transferred to the first side of the machine by the second spiral 18, and returned to the sorting section 10 by 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 outside of the fourth funnel 15 and connects the handling chamber side plate 9d, the fan case 19a of the suction fan 19, and the exhaust. The gear case 23 is disposed in a space 25 surrounded on three sides by the dust chamber side plate 5a, and the gear case 23 is connected to the grain lifting cylinder 21 on one side via a connecting member 26 and fasteners 27, 28.
The other sides are each integrally fixed to the fan case 19a. Further, the inner side of the gear case 23 is similarly fixed integrally to the dust removal chamber side plate 5a by a mounting seat 29 and fasteners 30, 31, so that the entire input shaft portion has a strong mounting structure. Reference numeral 32 denotes a power transmission case to the handling cylinder 8, and 33 denotes 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 9 of the handling chamber.
On the c side, the other power transmission case 33 is connected to the floating grain plate 16.
They are arranged in parallel in the lower part of the No. 4 funnel 15 so as to be close to each other. And power transmission case 3
2 is fixed to the rear side plate 9c of the handling chamber, and the tip side of the power transmission case 33 is integrally fixed to the dust removal chamber side plate 5a on the feed chain 11 side. The structure has significantly increased strength. 34 is a power transmission case to the exhaust wall chain 12 horizontally suspended above the No. 4 funnel 15. 35 is an input shaft of the gear case 23, 35a is an input pulley, 36 is a feed chain output shaft, 37 is an exhaust chain chain drive sprocket, 38 is a handling cylinder drive chain, 39 is a shifter gear, 40 is a bevel gear, 41 is a speed change lever, 42
is the output pulley of the engine 4, 43 and 44 are transmission belts, 45 is a transmission chain, 46 is a transmission 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 then passes through the transmission shaft 46, the bevel gears 40, 40, the output shaft 47,
The handling cylinder shaft 8a sequentially passes through the handling cylinder drive chain 38.
is transmitted to rotate the handling cylinder 8. On the other hand, the handling cylinder 8
In addition to the power transmission system to the side, power is transmitted from the input shaft 35 of the gear case 23 to the feed chain output shaft 36 by gear transmission of the gear group G to drive the feed chain 11. Further, the power transmitted from the exhaust straw chain drive sprocket 37 to the input shaft 34a of the power transmission case 34 by chain transmission drives the exhaust straw chain 12.

By the way, the gear case ho is not installed inside the fourth funnel 15 as in the conventional one shown in FIG. Since the power transmission cases 33 are disposed close to the grain flow board 14 side, the fourth funnel 15 has a wide space for the fourth object to fall, and is held in a large space. Therefore, the fourth item reliably falls onto the sorting section 10 and returns. 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 has a grain lifting cylinder for transporting grains into the paddy tank after sorting and a suction fan for removing dust, which are installed opposite to each other on one side of the machine body. The gear case that drives each part of the threshing machine is integrally attached to the grain lifting tube and the fan case in the space formed between the fan cases of the suction fan, so the gear case that drives each part of the thresher is functionally clean and robust. Moreover, since it is integrally attached to the grain lifting cylinder which is firmly fixed to the traveling aircraft body, not only the mounting strength of the gear case is increased, but also the grain lifting cylinder, gear case and fan case are connected in a continuous series. Since the gear case is placed on one side of the fuselage rather than inside the fourth funnel, it is easy to assemble. This has the effect of maintaining a wide space for the fourth object to fall.

[Brief explanation of the drawing]

Figure 1 is a vertical 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, and Figure 4 is a cross-sectional side view of a threshing machine equipped with the present invention. FIG. 5 is a cross-sectional plan view of a conventional threshing machine. In the figure, 3 is a paddy tank, 19 is a suction fan, 19
a is the fan case of the suction fan, 21 is the grain lifting cylinder,
23 is a gear case, and 25 is a space.

Claims (1)

[Scope of utility model registration request] A grain lifting cylinder for transporting grains after sorting into a paddy tank and a suction fan for removing dust are installed on one side of the machine, and a space is formed between the grain lifting cylinder and the fan case of the suction fan. A transmission device for a threshing machine, characterized in that a gear case for driving each part of the threshing machine is integrally attached to a grain lifting cylinder and a fan case.