JPS6134991Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dust exhaust pipe in a harvester. Generally, the direction of the dust exhaust pipe in a harvester needs to be changed depending on conditions such as the direction of the wind during work or the position at which the machine is stopped, so that the dust does not fall on the operator or unthreshed culm bundles.

In addition, if the dust exhaust port is located too high or points upward, the straw, etc. will scatter over a wide area, making it unhygienic. Therefore, the dust exhaust pipe should not be located too high or facing upward, and should be rotated over a wide range. It is preferable to configure it as follows. However, conventional dust exhaust tubes generally have a roughly L-shaped sidewall rotatably fitted into the top plate opening of the threshing machine A, as shown in Figure 6A, and Figure 6B. As shown in Figure 2, most of the threshing machines have an L-shaped dust evacuation tube (E) rotatably fitted into a bent tube (2) integrally protruding from the front wall of the threshing machine (A). In the latter case, the dust exhaust port is located at a high position, which not only causes the above-mentioned inconvenience, but also impairs the operator's forward visibility. The drawback is that the resistance is large, impairing the smooth dust evacuation action, and in both cases, the dust exhaust pipe cannot be stored compactly along the fuselage, so the dust exhaust pipe becomes an obstacle while traveling. In the case of a harvester that also serves as a carrier, the dust ejector may hit the ground during loading and unloading of the threshing machine, causing damage to the ejector.

The present invention has been made to solve the above-mentioned drawbacks, and has a dust exhaust pipe attachment port on the front wall of the threshing machine mounted on the traveling car body in the direction of movement of the car body. are opposed to each other with the required width wrapped, and their base ends are shifted by a predetermined distance in the front-rear direction and left-right direction, and are pivoted to the dust exhaust pipe mounting openings so as to face toward the front wall of the fuselage. A rotatable and foldable dust exhaust pipe is formed, and when the dust exhaust pipe is projected forward, the amount of overlap between the gutter-like bodies is small, and when folded toward the fuselage side, the overlap is small. By configuring the dust exhaust port to be large, it is possible to maintain the dust exhaust port at a low position, which prevents the dust from scattering over a wide area and prevents the operator's forward view from being obstructed by the dust exhaust tube. Furthermore, the direction of dust ejection can be changed steplessly as needed, and the dust ejection resistance can be minimized to maintain smooth and good dust evacuation performance at all times. , a dust exhaust system in a harvester that can be stored compactly along the front wall of the machine with the dust exhaust tube itself slightly deformed to prevent damage to the dust exhaust tube due to collisions with obstacles, etc. It is intended to provide a tube.

To explain the configuration of the present invention with reference to an embodiment shown in the drawings, FIGS. 1 and 2 are an overall side view and a plan view of a harvester, and show a traveling vehicle body 2 equipped with a crawler-type traveling device 1. An engine 3 is fixed at the rear in the direction of travel, and a threshing machine 4 is mounted on the front so that it can be loaded and unloaded freely.If necessary, the thresher 4 can be lowered from the traveling vehicle body 2 and the vehicle can be used as a transport vehicle using only the traveling vehicle body 2. It is ready for use. Reference numeral 5 denotes a grain culm supply stand foldably attached to one side of the threshing machine 4, which sequentially supplies the grain culm bundles placed on the grain culm supply stand 5 to the feed chain 6 of the threshing machine 4. The supplied grain culm is threshed while passing through the handling chamber, and the waste culm after the threshing process is automatically discharged to the other side of the machine by the waste culm conveying device 7, while the handled material is subjected to various sorting actions. After that, the fine grains pass through a grain lifting cylinder 8 and are stored in a storage bag on a paddy holder 9. Dust such as straw is discharged out of the machine from a dust chamber 12 at the front of the machine by a pressure fan and a suction fan 10 (not shown).

A fan case 12 houses the suction fan 10, and a front end opening 12a of the fan case 12
A rectangular cylindrical outlet cover 13 having an opening 4'a that penetrates the front wall 4a of the threshing machine 4 and protrudes forward in the direction of movement of the vehicle body 2 is attached. It is formed.

On the other hand, 14 is a dust exhaust pipe, and the dust exhaust pipe 14 has two rectangular gutter-like bodies 14a and 14b, as shown by the solid line in FIG. 3 and the vertical cross-sectional view in FIG.
The open edges 14'a, 14'b of both gutter-like bodies 14a, 14b are faced to each other with their respective open edges 14'a, 14'b lapped by a required width _W1 , and each gutter-like body 14a, 1
4b is pivotally connected to the outlet cover 13 via hinges 15a, 15b, and both gutter-like bodies 14a,
14b is slidably attached to the front wall 4a of the fuselage via long holes 16 and butterfly bolts 17 provided in the upper and lower plates of the gutter-like body 14a, and with the hinges 15a and 15b as fulcrums.
A dust exhaust pipe 14 is formed by connecting the two parts so as to be rotatable in the direction. And the rotation fulcrum of the outer gutter-like body 14a
P ₁ is provided at a position shifted forward l in the direction of movement of the vehicle body 2 and l' to the left with respect to the rotation fulcrum P ₂ of the inwardly disposed gutter-like body 14b, and the dust exhaust pipe 14 is moved from the front wall 4a. When the gutter-like body 14a,
14b move toward each other while sliding each other, and the lap distance becomes W ₂ (W ₂ > W ₁ ), and the dust exhaust pipe 14
It is designed to be stored along the front wall 4a in a contracted state. 18 is an inner gutter-like body 14b
Fixing nuts fixed to the top and bottom plates of
18a is a fixing bolt insertion hole.

Reference numeral 19 is a stand provided below the dust exhaust pipe 14 for loading and unloading the threshing machine, and the stand 19 has a U-shape in plan.
b is fixed to the front side wall of the threshing machine 4 via a bracket 20, and when the threshing machine 4 is lowered from the car body 2 to the ground, the stand 19 is brought into contact with the ground and the threshing machine 4 is held in a forward tilted state. be.

Next, the operation of the present invention will be explained. During threshing, if the butterfly bolt 17 is loosened and the outer gutter-shaped body 14a is rotated in the direction of arrow E in FIG. 3 about the pivot point _P1 , the inner gutter-shaped body 14b
can be rotated in the same direction (direction E) about the rotation fulcrum P ₂ through the butterfly bolt 17 and the long hole 16, and therefore the dust exhaust pipe 14 can be rotated at its angle within the stroke range of the long hole 16. can be changed arbitrarily, thereby making it possible to appropriately select the optimum direction for dust evacuation, and to place the dust evacuation tube 14 perpendicularly to the front wall 4a of the threshing machine 4 as shown by the solid line in FIG. Once positioned, the front end opening 1 of the fan case 12
No bends are formed in the exhaust path for dust discharged from 2a, so that the dust exhaust resistance can be minimized.

On the other hand, during non-threshing work, after removing the butterfly bolt 17, if the gutter-like bodies 14a and 14b are rotated to the maximum extent toward the front wall 4a of the machine body 4, the dust exhaust pipe 14 can be moved to the third
As shown by the imaginary line in the figure, it is rotated to be close to and parallel to the front wall 4a of the threshing machine 4. In this case, the pivot points P ₁ and P ₂ of both the gutter-like bodies 14a and 14b are set at positions shifted by l in the front-back direction and l' in the left-right direction, so that the inner gutter-like body 14b It is in a state where it is completely inserted into the outer gutter-like body 14a. Therefore, the overlap between the two is maximized, and the dust exhaust pipe 14 is positioned within the stand 19 with its capacity reduced to a small size and stored compactly. In this state, if the butterfly bolt 17 is inserted into the fixing bolt insertion hole 18a and tightened, the dust exhaust pipe 14 is fixed in a locked state.

Therefore, when traveling on the road or loading and unloading the threshing machine, the dust exhaust pipe 14 does not protrude significantly forward of the machine and is protected within the stand 19, so that the dust exhaust pipe 14 does not collide with obstacles or touch the ground. Since there is no direct contact, it is possible to reliably prevent the dust exhaust pipe 14 from being damaged due to a collision with an obstacle or the like.

As mentioned above, the present invention provides a dust exhaust pipe attachment port on the front wall of the threshing machine mounted on the traveling vehicle body in the direction in which the vehicle body travels, and also has two gutter-like bodies facing each other with their open edges wrapped around each other by the required width. Further, each of these dust exhaust tubes is pivotally attached to the dust exhaust tube mounting port at a position where each base end is shifted by a predetermined dimension in the front-rear direction and left-right direction, and can be freely rotated and folded from the side toward the front wall of the fuselage. form,
When the dust exhaust pipe is projected forward, the amount of overlap between the trough-like bodies is small, and when it is folded toward the fuselage side, the amount of overlap is large.
The dust exhaust pipe can be held at a low position, reliably eliminating the inconvenience of scattering dust over a wide area or obstructing the operator's forward view. Moreover, the dust exhaust direction can be changed as needed. It can be changed in stages, and it is possible to always maintain smooth and good dust evacuation performance by minimizing dust evacuation resistance.In addition, during non-threshing work, the dust ejector itself can be deformed to a small size. This has the effect of being able to be stored compactly along the front wall of the fuselage, thereby preventing damage to the dust exhaust pipe due to collision with obstacles or the like.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Fig. 1 is an overall side view of the harvester equipped with the present invention, Fig. 2 is a plan view thereof, Fig. 3 is an explanatory diagram of the main parts, Fig. 4 is a vertical sectional view of the dust exhaust pipe, Fig. 5 6 is a perspective view of the main part, and FIGS. 6A and 6B are conventional views. In the figure, 2... traveling vehicle body, 4... threshing machine, 4a...
...Front wall, H...Dust exhaust tube installation port, 14...Dust exhaust tube,
14a, 14b... gutter-like body.

Claims (1)

[Scope of utility model registration request] A dust exhaust pipe attachment port is provided on the front wall in the direction of movement of the threshing machine mounted on the traveling vehicle body, and two gutter-like bodies are arranged facing each other with their open edges wrapped over each other by a required width, and their respective base ends are are pivoted to the dust exhaust tube mounting ports at positions shifted by a predetermined length in the front-rear direction and left-right direction to form a dust exhaust tube that can be freely rotated and folded from the side toward the front wall of the fuselage. A dust exhaust pipe in a harvester, characterized in that when the trough-like bodies are projected forward, the overlap between the trough-like bodies is small, and when folded toward the body side, the overlap is large. .