JPH08827Y2 - Combine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a combine harvester, and more particularly to improvement of a cut grain culm transporting portion of the combine harvester.

[Prior Art] Generally, in combine harvesters, a guide plate is provided at a transfer portion from the pre-cutting processing section at the front part of the machine body to the threshing device on the side of the cutting culm tip to guide the flow down. Also, in the pre-cutting processing section, a large amount of fine dust such as straw dust is generated during the cutting work, so that the dust-preventing cover is provided to prevent such dust from falling on the operator. Proposed.

[Problems to be solved by the invention]

In the above-mentioned conventional technique, the root side of the harvested grain culm is reliably transported by the holding chain, but the tip side tends to be delayed due to the sliding contact resistance with the flow-down guide plate, and stays entwined with the front and rear grain culms. In some cases, the grain culms could not be transported smoothly. In addition, dust such as straw chips was likely to collect near the grain culm input port of the threshing device, which further hindered smooth transportation on the tip side.

In order to solve the above problems, it is possible to provide an endless rotation chain type feed mechanism on the flow-down guide plate, but the grain culms are bitten at the end portion thereof, or the grain is invaded by the mechanism. There were practical problems such as frequent clogging and breakdown.

In addition, since the pre-mowing treatment section is provided so as to be able to move up and down in order to control the cutting height, the dust-proof cover has to have a retracting mechanism, resulting in a complicated structure and high cost.

An object of the present invention is to facilitate the transportation on the tip side by a simple structural improvement, and to effectively utilize the transportation means to perform a dustproof function.

[Means for solving problems]

In order to achieve the above object, the combine according to the present invention, in order to achieve the above object, in the tip side downflow guide plate of the grain culm supply inlet lower part of the threshing device, an air outlet for blowing air diagonally upward toward the handling chamber, Along with the opening width in the direction along the rotation axis of the handling cylinder installed in the handling chamber, the opening width in the direction intersecting with the rotation axis is formed to be longer, and
It is characterized in that the intake port of a blower fan for supplying air to the air outlet is made to face the vicinity of the mowing pretreatment section or the control section.

The operation and effect of this characteristic configuration are as follows.

[Action]

The air blown out from the air outlet blows away the dust trapped in the vicinity of the grain culm supply inlet to the inside of the handling room, and the opening width in the direction along the axis of rotation of the handling cylinder installed in the handling room, Since the air outlet is opened so that the opening width in the direction intersecting with the axis of rotation is longer, the posture is usually along a direction substantially orthogonal to the direction of the handling cylinder axis. Even if the grain culm introduced into the handling room is slightly inclined with respect to the tip side of the grain culm, even if the grain culm is slightly orthogonal to the direction of the axis of the handling barrel, the wind blown upward and rearward is treated. It is sprayed over a length range along the direction intersecting the trunk axis. As a result, the blowing force acts on the tip side of the grain culm for a relatively long time and reliably, so that the tip side of the grain culvert becomes slightly uplifted with respect to the tip side downflow guide plate and undergoes an auxiliary conveying action. Therefore, the sliding contact resistance between the grain culm and the flow-down guide plate is reduced, and the grain culm is smoothly transported.

Moreover, the dust is suctioned and removed from the pre-mowing processing section, which is the dust generation location, or the vicinity of the control section where the operator is, by using the suction force of the blower fan.

[Effect of device]

As a result, it was possible to facilitate the transportation of the grain culm tip side by a simple structure improvement, and to reduce the dust falling on the operator as much as possible.

〔Example〕

As shown in FIG. 3, the control section (2) is provided on the machine body provided with the crawler traveling device (1) and the threshing device (3) is mounted, and the pre-mowing processing section (4) is lifted up and down on the front section of the machine body. The combine is configured by freely connecting.

At the front end, the pre-cutting processing section (4) is a weeding tool (5) for guiding the planted grain culms, a raising device (6) for raising the cultivated grain culms in a standing posture, and raised. A hydraulic cylinder that is composed of a clipper-type cutting device (7) for cutting the root side of the grain culm, a vertical transport device (8) for transporting the stalk grain culm in a standing posture while gradually changing its posture to a sideways state, and the like. By (9), it is integrally swingably provided around the axis (P) so that the cutting height can be changed and the road surface can be traveled.

As shown in FIG. 2, the threshing device (3) has a threshing feed chain (10) extending forward and backward on the left side of the machine body, and along with the threshing feed chain (10) and the chain (10). It is configured to handle the tip side in the handling room (12) while holding and transporting the root side of the grain culvert by the holding rail (11) provided.

As shown in FIG. 1 and FIG. 2, the terminal part of the vertical transfer device (8) of the pre-mowing processing unit (4) and the lower part of the entrance of the grain culm supply port (13) of the threshing device (3). In between, there is a downflow guide plate (14) for guiding down the tip of the grain culm toward the supply port (13). This downflow guide plate (14)
An air blowout port (15) for blowing air toward the inside of the handling chamber (12) and obliquely upward is formed in the. The air outlet (15) has a larger opening width in the direction intersecting with the rotation axis of the handling cylinder (19) installed in the handling chamber (12) than in the direction along the rotation axis. It is formed so as to form an opening. A blower fan (16) for supplying air toward the air outlet (15) is provided below the flow-down guide plate (14). The transmission shaft (18) is driven by the power from the engine (17) arranged below the control section (2),
A large-diameter pulley (22) is attached to a relay shaft (21) that is driven via a power transmission belt (20) for driving the handling cylinder (19), and its power is applied to a blower fan (16) via the power transmission belt (23). The small diameter pulley (24) provided is configured to be driven, and the fan (16) is rotated at high speed to obtain a strong wind force.

Further, the air intake port (25) of the blower fan (16) faces the vicinity of the vertical transfer device (8) of the pre-cutting processing section (4),
It is constructed so as to suck straw dust and the like generated in the device (8).

[Another embodiment]

The intake port (25) of the blower fan (16) may be configured to face the vicinity of the control section (2) as shown in FIG.

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of the combine according to the present invention. Fig. 1 is a vertical sectional side view of the main part, Fig. 2 is a vertical sectional front view of the main part, and Fig. 3
FIG. 4 is a side view of the front part of the combine, and FIG. 4 is a plan view of essential parts of another embodiment. (3) …… Threshing device, (4) …… Pre-harvest processing unit, (12)
…… Handling room, (13) …… Granule supply port, (14) …… Downflow guide plate, (15) …… Air outlet, (16) …… Blower fan, (25) …… Intake port.

Claims (1)

[Scope of utility model registration request] 1. An air blower for blowing air obliquely upward inward of the handling chamber (12) to a tip side downflow guide plate (14) at the lower part of the grain culm supply port (13) inlet of the threshing device (3). Mouth (15)
The opening is formed so that the opening width in the direction intersecting with the rotation axis is longer than the opening width in the direction along the rotation axis of the handling cylinder (19) installed in the handling chamber (12). , A combine in which an intake port (25) of a blower fan (16) for supplying air to the air outlet (15) is faced in the vicinity of the pre-mowing processing section (4) or the control section (2).