JPH0748033Y2 - Transmission device to combine harvester - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial field of application The present invention is a combine for threshing while cutting a planted culm by arranging a mowing section in series with a threshing section mounted on a traveling section. The present invention relates to a power transmission device to the reaper.

(B) Conventional technology Conventionally, in a combine harvester, a means for supplying power to the mowing part from two transmission paths is Japanese Patent Publication No. Sho 49-1781.
There is a configuration described in Japanese Patent No. 3 publication.

That is, the means described in this publication makes the reaper transmit from the two transmission paths from the transmission output shaft that changes the traveling speed and the rotation shaft that rotates at a constant speed. By interposing a one-way clutch between the rotating shaft side and the rotating shaft side, the power on the side with the faster rotation speed is transmitted to the mowing section so that the lowering of the rotation speed of the mowing section does not affect performance. is there.

(C) Problems to be Solved by the Invention Thus, conventionally, the mowing part is driven by two transmission paths from the transmission output shaft for changing the traveling speed and the rotating shaft rotating at a constant speed. Although the rotation speed of the cutting section is not decreased and the performance of the cutting section is not hindered, the present invention drives the cutting section by the transmission shaft of the mission output and the threshing section of the threshing section. It is a device devised for the purpose of providing a transmission device that simplifies the transmission system by transmitting the power from two transmission paths, and has a simple structure, low cost, and good maintainability.

(D) Means for Solving the Problems In order to achieve the above object, the present invention provides
In a combine for threshing while arranging a mowing section in a row with a threshing section mounted on the traveling section while mowing the planted culms, one end of the mowing input shaft of the mowing section travels at a variable speed. Transmission path for driving the mowing section by transmitting the transmission output shaft of the cutting section from the saw, and the other end of the cutting input shaft is attached to the sprocket around which the sandwiching and conveying chain of the threshing section is hung, and the sandwiching and conveying chain is understood. A transmission path for driving the reaping unit is configured, and one-way clutches are respectively provided in these two transmission paths.

(E) Action With this configuration, the transmission output shaft of the traveling unit is known to the one-way clutch of the traveling unit because the harvesting input shaft that drives the raising device, the cutting blade, the harvested culm transport mechanism, etc. in the harvesting unit. Rotational power is supplied by the transmission path via the reaper to drive the respective mowing parts.

At this time, if the rotation speed of the transmission output shaft becomes slower than the rotation speed of the sprocket rotated by the sandwiching and conveying chain of the threshing section due to the shifting operation of the traveling section, the sprocket will be cut by the transmission path through the one-way clutch. When the sprocket becomes slower than the mission output shaft, the mission output shaft will be transmitted from the unknown transmission path to the reaper at the ultra low speed of the running part. Is driven by the transmission path from which the nipping and conveying chain of the threshing section is known.

(F) Embodiment Hereinafter, the device of the present invention will be specifically described with reference to the embodiment drawings.

Therefore, first, the arrangement and outline of each part of the combine will be described with reference to FIGS. 3 and 4, (10) is a machine base supported by the crawler type traveling part (1), and (2) is a nipping and conveying chain ( 6) is a left side of machine stand (10), which is a threshing section equipped with a handling barrel (11) and a processing barrel by stretching 6) on the left side, and a straw chain (12). Control unit ・ (14) is a grain tank ・ (15) is an engine
These controls (13), grain tank (14), engine (1
5) are arranged on the right side of the machine base (10) sequentially from the front side.

(3) is a grass plate (16), raising device (17), cutting blade (18)
・ A mowing unit equipped with a grain culm transport mechanism (19), (20) a fried cylinder for feeding the grain from the threshing unit (2) into the grain tank (14), and (21) an engine (15) A lifting cylinder that is erected on the rear side and lifts up and takes out the grains stored in the grain tank (14), and the delivery barrel (22) is connected to the upper end portion of the grain removal unit (2). On the rear side is a straw cutter (23) with circular blades attached to opposite two parallel shafts. The grain culms harvested by the reaping unit (3) are supplied to the threshing unit (2) and sandwiched between the chains. Threshing processing is performed by the handling cylinder (11) and the processing cylinder while being fed laterally at (6), and the processed kernel passes through the inside of the fried cylinder (20) and is stored in the grain tank (14). .

In addition, the straw culms that have been threshed are passed on to the straw chain (12), transferred to the rear and cut into a predetermined length by the straw cutter (23), and stored in the grain tank (14). Grain is appropriately lifted in the lifting cylinder (21) and taken out of the machine from the carry-out cylinder (22).

Next, the transmission device which is the core of the present invention will be described with reference to FIGS. 1 and 2.

(M) is a mission that is arranged in front of the threshing unit (2) and approximately at an intermediate position in the left-right width direction of the traveling unit (1), and is input from the engine (15) by a belt (24). It is linked to a drive sprocket shaft (25) for driving the front end of the crawler in 1), and the traveling section (1) is shifted up and down through the mission (M) by a shift operation in the control section (13).

The pinching and conveying chain (6) is an under type in which the start end and the end of the chain are wound around the respective sprockets (26) (27) to form an under type.
The chain input shaft (29) is driven by 8) to rotate the nipping and conveying chain (6).

(30) is a reaping input case that is installed along the front side of the threshing unit (2) and has a reaping input shaft (31) installed inside, and one end of the reaping input shaft (31) is at the end (right end) and the mission. (M)
The drive shaft that hangs the belt (34) around the pulleys (32) (33) attached to the mission output shaft (5) from the power transmission unit, and transmits the various parts of the mowing from the mowing input case (30) toward the lower front. A cutting drive case (35) in which (4) is built in is provided in a protruding manner, and the drive shaft (4) is transmitted from the cutting input shaft (31) by a pair of bevel gears (36).

A one-way clutch (8) for shutting off rotational power from the reaping input shaft (31) is built in the pulley (32) provided on the mission output shaft (5), and the sandwiching conveyance chain (6) ) Is the starting end of the cutting input shaft (31)
Sprocket (26) with the other end of which is attached to the shaft (left end)
The one-way clutch (9) for cutting off the rotational power from the reaping input shaft (31) is also built in the sprocket (26).

As a result, the drive shaft (4) of the reaper (3) has a transmission path (a) for transmitting the reaper input shaft (31) through the one-way clutch (8) from the transmission output shaft (5). A transmission path (b) for transmitting the reaping input shaft (31) from the nipping and conveying chain (6) through the one-way clutch (9) built in the sprocket (26) at the starting end of the nipping and conveying chain (6) is formed. Power is supplied from either of the two transmission paths (a) and (b).

The one-way clutch (8) built in the pulley (32) provided on the mission output shaft (5) may be built in the pulley (33) to which one end of the reaping input shaft (31) is attached to the crocodile.

With this configuration, rotational power is input from the engine (15) to the mission (M) and the chain input shaft (29), and the power input to the mission (M) is shifted to a high or low level by a gear shifting operation. The power input to the chain input shaft (29), which drives the traveling unit (1), is used as the nip transport chain (6)
To rotate. Then, rotational power from the transmission output shaft (5) according to the shift is transmitted from the transmission path (a) to the drive shaft (4) of the reaper (3).

At this time, if the traveling speed of the traveling unit (1) becomes extremely low,
That is, the rotation speed of the mission output shaft (5) is also slowed down, and the rotation speed of the sprocket (26) at the leading end of the nip conveyance chain (6) is faster, which causes the mission output shaft (5) to be a one-way clutch. (8) is cut off,
Instead, the pinching and conveying chain (6) transmits the drive shaft (4) from the transmission path (b) via the one-way clutch (9).

On the contrary, when the rotation speed of the transmission shaft (5) becomes higher than the rotation speed of the sprocket (26) of the pinching and conveying chain (6), the one-way clutch (9) of the transmission path (b) is disengaged. The mission output shaft (5) is transmitted from the transmission path (a).

(G) Effect of the Invention As described in detail above, the present invention is a combine harvester that disposes threshing while planting grain culms are cut by arranging a mowing section in series with the threshing section mounted on the traveling section. One end of the mowing input shaft of the cutting section changes the traveling speed, and the transmission path of the traveling unit drives the mowing section by transmitting the output shaft of the running section from the other end, and the other end of the mowing input shaft holds the threshing section at the nipping section. A sprocket around which a chain is hung is pivotally mounted to form a transmission path for driving the cutting unit from the nipping and conveying chain.
Since the one-way cut is installed in each of the two transmission paths, if the rotation speed of the mission output shaft becomes slower than the rotation speed of the sprocket rotated by the sandwiching conveyor chain of the threshing section, this sprocket will Power will be supplied to the mowing part by the transmission path through the one-way clutch of Gawa, and if the sprocket becomes slower than the above-mentioned mission output shaft, this mission output shaft will be transmitted from the transmission path from the Therefore, the driving of the traveling section to the mowing section at an extremely low speed is covered by the transmission path from the nipping and conveying chain of the threshing section, so that the performance of the mowing section is not hindered, and The drive to the reaping section is carried out from the mission output shaft and the sandwiching conveyance chain of the threshing section together with the reaping input shaft. Because was allowed transmission from two transmission paths, structured simplified transmission system becomes that of the simple, low-cost, it was able to provide maintenance also good transmission.

[Brief description of drawings]

1 is a plan view showing a main part of a transmission, FIG. 2 is a side view of the same, and FIG. 3 is a side view showing the entire combine. , 4th
The figure is a plan view of the same. DESCRIPTION OF SYMBOLS 1 ... Traveling part, 2 ... Threshing part, 3 ... Mowing part 31 ... Mowing input shaft, 5 ... Mission output shaft, a / b ... Transmission path 6 ... Nipper conveyance chain, 26 ... Sprocket, 8 ... One-way clutch 9 ... One-way clutch

Claims (1)

[Scope of utility model registration request] 1. A combine in which a threshing part (2) mounted on a traveling part (1) and a mowing part (3) are arranged in a row so as to thresh a planted grain culm while threshing. A transmission path (a) for driving the reaper (3) by transmitting one end of the reaping input shaft (31) of (3) to the transmission output shaft (5) of the traveling unit (1) for changing the traveling speed and driving the reaper. , The other end of the reaping input shaft (31) has a sprocket (26) around which the nipping and conveying chain (6) of the threshing section (2) is hung, and the nipping and conveying chain (6) has its reaping section ( 3) to form a transmission path (b) for driving the two, and these two transmission paths (a)
(B) A transmission device for a harvesting section of a combine, comprising one-way clutches (8) and (9) interposed therein.