JP2002095331A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester having such a construction that an air cleaner 11 housed in a bonnet 16 covering an engine 15 and a precleaner 13 installed at a high position of the bonnet 16 are connected with each other and a grain collecting tank 6 conveyed from a threshing device 4 is installed behind the bonnet 16, and the precleaner 13 for placed at a position with slight dust and diminish an air suction noise without limiting the capacity of the grain tank 6. SOLUTION: This combine harvester is characterized by having such a construction that the precleaner 13 is placed in a space defined by an elevator 10 for feeding grains into the grain tank 6 and the threshing device 4, or on the machine body 2 inner side above behind the grain tank 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine intake system air cleaner housed in a hood covering an engine, and a pre-cleaner provided at a high place outside the bonnet. The present invention relates to a combine in which a grain tank for collecting the grain transported is arranged behind the bonnet.

[0002]

2. Description of the Related Art Conventionally, an air cleaner for an engine intake system is housed in a hood covering an engine, and an intake port thereof is opened in the hood. A radiator that cools the cooling air sent to the engine is also accommodated in the bonnet, and the hood has an intake port that sucks air toward the radiator and is opened with a dustproof net. By the way, for example, in
As disclosed in JP-A-201332, the air cleaner of the engine intake system housed in the hood covering the engine and the pre-cleaner arranged at a high place outside the bonnet are connected and communicated from the threshing device. There is a combine in which a grain tank for collecting the pumped grain is arranged behind the bonnet. This is devised in order to prevent an obstacle to the engine intake due to the clogging of the dustproof net. In this example, a cabin that covers a boarding operation unit including a control seat provided on the hood is provided, and the precleaner is arranged at a high place between the grain tank and the cabin.

[0003]

By the way, the pre-cleaner is arranged at a high place at a position where dust such as floating straw is difficult to access as much as possible. Unless it is a combiner that is located close and does not include a cabin as in the above example, the driver is exposed to the ear intake noise, which has not been sufficient as a noise countermeasure. In addition, there is room for the pre-cleaner to be arranged between the grain tank and the cockpit, and there is room for further improvement in that the capacity of the grain tank is restricted.

Accordingly, an object of the present invention is to provide a pre-cleaner which can be easily arranged at a position where dust is small, without restricting the capacity of the grain tank, and which can reduce the noise of the driver's ear intake as much as possible. The point is to provide.

[0005]

The constitution, operation and effect of the invention according to claim 1 are as follows.

According to a first aspect of the present invention, an air cleaner of an engine intake system housed in a hood covering the engine is connected to a pre-cleaner disposed at a high place outside the bonnet, and threshing is performed. In a combine provided with a grain tank for collecting grains transported and discharged from the apparatus behind the bonnet, a grain tank is formed between the lifting apparatus that supplies grains to the grain tank and the threshing apparatus. The pre-cleaner is provided in the gap.

According to the combine according to the first aspect of the present invention, since the lifting device is a screw conveyor arranged in a vertical direction, at the arrangement position, the outer wall surface of the grain tank is located on the screw conveyor. A vertical recess is formed on the side of the threshing device, and a margin space is formed between an outer wall surface of the grain tank and an outer wall surface of the threshing device, and the lifting device in the margin space is formed. There is room for placing the precleaner in the gap between and the threshing device. In addition, by disposing the pre-cleaner in the recess of the grain tank, the pre-cleaner is located behind the grain tank when viewed from the cockpit, and is sound-insulated, so the pre-cleaner emits light. Intake noise is less likely to reach the driver's ear directly. Further, the pre-cleaner is located between the outer wall surface of the grain tank and the outer wall surface of the threshing device at an upper portion of the lifting device at a high place, and a distance between both outer wall surfaces on the side of the extra space. Is small, so that dust such as floating straw is difficult to access, and the dust is hard to mix with the air sucked into the pre-cleaner. The precleaner may be attached to an upper portion of the lifting device or an outer wall of the threshing device.

[Effect] Therefore, the pre-cleaner can be easily arranged at a position where the amount of dust is small, the capacity of the grain tank is not restricted, and the noise at the driver's ear can be reduced as much as possible.

The structure, operation and effect of the invention according to claim 2 are as follows.

According to a second aspect of the present invention, an air cleaner of an engine intake system housed in a hood covering the engine is connected to a pre-cleaner provided at a high place outside the bonnet, and threshing is performed. A combine tank in which a grain tank for collecting grains transported from the apparatus is disposed behind the bonnet, and a cleaner chamber of the pre-cleaner is provided at an upper portion of a body inside a rear upper part of the grain tank. is there.

According to the combine according to the second aspect of the present invention, the cleaner chamber of the pre-cleaner is provided at the upper rear portion inside the fuselage in the grain tank, so that the dust such as floating straw can float in front of the fuselage. Since the air is suctioned at a position distant from the part, the dust is difficult to approach the cleaner chamber. Further, since the grain tank is interposed between the driver and the cleaner chamber, the intake noise hardly reaches the driver's ear.

[Effect] Therefore, similarly to the combine according to the first aspect, the precleaner can be easily arranged at a position where the amount of dust is small, and the capacity of the grain tank is not restricted, and the driver's ear intake noise can be reduced. Can be reduced as much as possible.

[0013]

An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a side view and a plan view of an example of a combine according to the present invention. The combine is composed of a threshing device 4, a boarding operation unit 5 and a body 2 supported by a pair of right and left crawler traveling devices 1. And a grain tank 6 for collecting grains that are threshed by the threshing device 4 and carried out and carried out, and are equipped with a grain tank 6 and the like. The unit 3 is mounted. And the grain tank 6
Is mounted on the machine body 2 so as to be rotatable around the vertical axis Z of the lifting screw 8a of the unloader 8 for discharging the grains stored in the grain tank 6. At the upper end of the lifting screw 8a, around the vertical axis Z and the horizontal axis P
A traverse screw 8b that is supported so as to be swingable around is connected. Then, the grain tank 6 is pivotally movable around the longitudinal axis Z so that the posture can be changed from a use posture to an open posture in which the sides of the threshing device 4 are opened.
Supported above.

A fuel tank 17 for driving the combine is mounted in a space formed below a rear portion of the threshing device 4.
For example, as shown in FIG. 2, the metal band 18 is fastened and fixed by a fastening bolt using a metal band 18, but instead of the conventional method, the metal band is almost tightly attached to the outer grain of the fuel tank and tightened and fixed. For example, as shown in FIG. 6, the metal strip 18 is slightly shortened so that a gap is formed between the metal strip 18 and the support side at the fastening portion 18a.
The radius of curvature at the bent portion 18b of the fuel tank 1
7 is smaller than the radius of curvature of the ridge 17a in the outer grain. In this case, by tightening the fastening bolt 19, the gap is narrowed, and the fuel tank 17 can act as a resilient force against the extension of the bent portion 18 b of the metal band 18 as an elastic force. Therefore, the height of the metal band 18 above the fastening portion 18a is
By appropriately setting the fuel tank 17,
Excessive tightening can be prevented, and the trouble of managing the tightening force of the fastening bolt 19 for protecting the fuel tank 17 can be omitted, and the fuel tank 17 can be stably supported on the body 2.

The grain tank 6 is formed in a box shape, and the lower side thereof is formed to taper downward when viewed in the front-rear direction.
At the bottom, a bottom screw 9 is provided along the front-rear direction. The rear end of the bottom screw 9 extends outward from the rear side wall of the grain tank 6 and is interlocked with the lifting screw 8a of the unloader 8. On the other hand, the front end of the screw shaft of the bottom screw 9 is, as shown in FIG.
At the protruding end of the screw shaft, the driven bevel gear constituting the bevel gear mechanism while being housed in the gear transmission case is interlockingly connected to the protruding end of the screw shaft to form the power input portion IN. ing.

The grain tank 6 covers an engine 15 disposed below the driver's seat 5a.
The air cleaner 11 of the engine intake system is accommodated in the bonnet 16. The pre-cleaner 1 is connected to the air cleaner 11 via an intake pipe 12.
3 is arranged at a high place outside the bonnet 16. The precleaner 13 is, as shown in FIGS. 3 and 4, for example, supported by the threshing device 4 and fed to the grain tank 6 by the threshing device 4 and threshing device 10.
A box-shaped cleaner chamber 13a is provided in a gap formed between the threshing device 4 and the threshing device 4. This cleaner room 13
a shows a filter 1 with a side wall surface of a housing to which the intake pipe 21 is connected.
4 may be used.

The hoisting device 10 is set up so that the side wall of the grain tank 6 is recessed so as to be positioned in a recess 7 formed in the vertical direction on the threshing device 4 side. The lifting device 10 has a discharge unit 10a that discharges the grain transported from below to the upper end, and in a use posture of the grain tank 6, the discharge port of the discharge unit 16a is It is configured to open to the upper part of the recess 7 formed in the grain tank 6 and to be brought into close contact with the receiving opening for receiving the grain (see FIGS. 2 and 4). When the grain tank 6 is rotated toward the open position, the discharge unit 16a and the receiving opening are separated from each other. With such a configuration, a gap is formed between the lifting device 10 and the outer wall surface of the threshing device 4, and the precleaner 13 is arranged in a gap where dust hardly reaches.

As a result of the above configuration, the pre-cleaner 13 is located away from the driver's seat 5a of the boarding driver 5, so that not only does the ear intake noise not generate for the driver, but also the kernel When the tank 6 is in the use position, the pre-cleaner 13 is in the recess 7 of the grain tank 6.
And inner side wall portions 6 extending on both sides of the concave portion 7 facing the threshing device 4 of the grain tank 6.
Therefore, even if the intake noise is generated in the pre-cleaner 13, the operation performed by the boarding operation unit 5 is blocked by the grain tank 6, particularly the inner side wall 6b. Is difficult to reach.

With the above configuration, the pre-cleaner can be easily arranged at a position where the amount of dust is small, and there is no restriction on the capacity of the grain tank, and the noise at the ear of the driver can be reduced as much as possible.

[Other Embodiment] In the above embodiment, the pre-cleaner 13 is supported by the threshing device 4 and the grain threshing by the threshing device 4 is supplied to the grain tank 6 by the lifting device 10. The example in which the pre-cleaner 13 is disposed in the space inside the body 2 in the upper rear portion of the grain tank 6 as shown in FIGS. Cleaner room 13 in
a may be provided. The cleaner chamber 13a has a rectangular recess at the upper rear end of the inner side wall 6b facing the threshing device 4 of the grain tank 6, as seen in, for example, a vertical section of the grain tank 6 shown in FIG. The filter 14 can be formed on the inner side wall 6b around the recessed portion, and formed inside the filter 14. Even with such a configuration, the pre-cleaner 13 is provided with the driver seat 5a.
Is located away from the driver, does not generate noise at the ear near the driver, and because the grain tank 6 separates the pre-cleaner 13 from the driver, the pre-cleaner 13 , It is difficult for the noise to reach the driver's ears. The cleaner chamber 13a
Can be formed in the shape of a box as described in the above embodiment, and can be formed by providing a concave portion in the upper rear portion of the grain tank 6 and covering the concave portion with a filter. .

Further, as shown in FIG. 5, for example, the fuel tank 17 may be supported by a metal band 18 having a U-bend 18c formed outward at a position above both fastening portions 18a. With this configuration, the U-bend 18c
Can exert an elastic force caused by being opened by retightening, and the same result as the configuration described in the above embodiment can be obtained. Further, the bent portion 18b of the metal strip 18 described in the above embodiment may be formed such that the angle between both sides thereof is an acute angle. In this case, the metal band may be tightly fixed to the fuel tank in a tightly fixed state.

In the above, the configuration in which the grain tank 6 is supported on the machine body 2 so as to be rotatable about the vertical axis Z has been described.
The support of the grain tank 6 is not limited to the above configuration. The position of the pre-cleaner 13 is significant when the grain tank 6 is in the use posture, and even if the grain tank 6 does not rotate or is removable, its operation and There is no difference in effect.

Further, in the above embodiment, the configuration in which the pre-cleaner 13 is provided with the box-shaped cleaner chamber 13a is illustrated and described, but the cleaner chamber 13a is not limited to the box-shaped cleaner chamber. In short, any material that functions as a precleaner may be used. The counterpart to which the precleaner 13 is attached is not limited to the threshing device 4 but may be supported on the machine body 2 or may be attached to the lifting device 10.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a combine according to the present invention.

FIG. 2 is a plan view showing an example of a combine according to the present invention.

FIG. 3 is a side view of a main part of the combine shown in FIG. 1;

FIG. 4 is an explanatory diagram of a main part configuration showing an example of a grain discharging mechanism.

FIG. 5 is an explanatory view showing an example of a fuel tank mounting structure in the combine according to the present invention.

FIG. 6 is an explanatory view showing another example of the mounting structure of the fuel tank in the combine according to the present invention.

FIG. 7 is a side view showing another example of the combine according to the present invention.

FIG. 8 is a longitudinal sectional view of a main part of the grain tank of the combine shown in FIG. 7 as viewed from the front.

[Explanation of symbols]

 2 Body 4 Threshing device 6 Grain tank 10 Lifting device 11 Air cleaner 13 Precleaner 13a Cleaner room 15 Engine 18 Bonnet

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 2B074 AA01 AB01 AC02 BA11 BA19 CD06 CE01 CH01 DA01 DA02 DC01 DC03 DE03 DF03 DF11 GB01 2B396 JA04 JC07 KE03 KE04 MA02 MA05 MA07 MC02 MC13 3D038 BA12 BB08 BC05

Claims (2)

[Claims] An air cleaner for an engine intake system housed in a hood covering an engine and a pre-cleaner provided at a high place outside the bonnet are connected to each other, and grains transported from a threshing device to and discharged from the threshing device. In a combine in which a grain tank for recovering the grain is arranged behind the bonnet, the precleaner is arranged in a gap formed between a lifting device that supplies grain to the grain tank and the threshing device. A combine characterized by the following. 2. An air intake system air cleaner accommodated in a hood covering an engine and a precleaner disposed at a high place outside the bonnet are connected and communicated with each other, and grains transported from the threshing device to and discharged from the threshing device. A combine tank provided with a grain tank for recovering the water from the bonnet, wherein a cleaner chamber of the pre-cleaner is provided in an upper portion of the grain tank inside the fuselage.