JP2001260665A - Moving vehicle for working - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine capable of easily mounting a pre-cleaner with a simple structure and easily cleaning the pre-cleaner. SOLUTION: An internal combustion engine 2 is loaded on a combined harvester and thresher 1, a pre-processing part 3 and a threshing part 4 are driven by the motive power of the internal combustion engine 2, and a crawler unit 7 is driven to be traveled and moved. The internal combustion engine 2 is accommodated in an engine room 10 with an air cleaner 9 supplying the air to the engine 2, and an engine cover 11 forms a machine body right side of the engine room 10. The pre-cleaner 12 can be connected to and mounted on the air cleaner 9 at an upper part of the engine cover 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work vehicle such as a combine or a tractor, and more particularly to a work vehicle which is often used in a dusty environment. Related to moving vehicles.

[0002]

2. Description of the Related Art Conventionally, when used in a working mobile vehicle such as a combine or the like, particularly in an environment where there is a lot of dust, if only an intake air cleaner connected to an internal combustion engine is used, the air cleaner is arranged in a dusty portion. As a result, clogging of the air cleaner occurs at an early stage, and unless the filter of the air cleaner is frequently cleaned, the output of the engine is reduced.

[0003] Further, a device has been devised in which a pre-cleaner is connected to an intake port of an air cleaner so as to be suitable for an environment with much dust. This is disclosed, for example, in Japanese Utility Model Laid-Open No.
As shown in Japanese Patent Publication No. 223, an intake cylinder extends upward from an air cleaner intake port of an internal combustion engine, and a pre-cleaner is attached above the body.

[0004]

The pre-cleaner described above is located at the uppermost portion of the fuselage, and is located in an environment where dust is relatively small and the number of times of cleaning is relatively small. Since it is located at the top, it is difficult to clean. For example, a pre-cleaner is installed so as to be movable vertically by a screw rod, and the drive motor rotates the screw rod to lower the pre-cleaner and then cleans. And the like, and complicated and expensive equipment.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a working vehicle that enables a precleaner to be mounted with a simple structure and that can easily clean the precleaner.

[0006]

The present invention according to claim 1 (for example, see FIGS. 1 to 3) has an internal combustion engine (2) mounted thereon, and the working machines (3, 4) are powered by the internal combustion engine.
) Is driven and the traveling device (7) is driven to move, the internal combustion engine (2) is housed in an engine room (10) together with an air cleaner (9) for the engine. An engine cover (11) constituting at least one side of the engine room,
The work vehicle has a structure in which a precleaner (12) can be attached so as to be connected to the air cleaner (9).

According to a second aspect of the present invention (see, for example, FIG. 3), a first connecting cylinder (13) connected to an intake port (9a) of the air cleaner is disposed in the engine room (10). The other end opening (13) of the first connecting cylinder
a) is arranged facing the engine cover (11), and the second connecting cylinder () is connected to the engine cover (11) such that one end is connected to the other end opening (13a) of the first connecting cylinder. 2. The pre-cleaner main body (16) is attached, wherein the other end of the second connecting cylinder extends toward the outside of the engine room (10), and the pre-cleaner body (16) is connected to the outside. Work mobile vehicle.

According to a third aspect of the present invention (see, for example, FIG. 3), the engine cover (11) is openable and closable together with the pre-cleaner body (16) and the second connecting cylinder (15). In the closed position, the other end opening (13a) of the first connecting cylinder (13) and one end (15a) of the second connecting cylinder (15) communicate with each other, so that the engine cover is in the open position. 3. The work according to claim 2, wherein the other end opening (13a) of the first connecting cylinder (13) and one end (15a) of the second connecting cylinder (15) are separated. In a moving vehicle.

According to a fourth aspect of the present invention (see, for example, FIG. 3), the engine cover (11) has a lower end (16).
, Which is rotatably supported on the center and is opened and closed, and the second
4. The work according to claim 2, wherein the connecting cylinder (15) is disposed at an upper end portion of the engine cover (11) and extends upward, and the pre-cleaner main body is disposed above the fuselage. For mobile vehicles.

(Operation) Based on the above configuration, in an environment with a lot of dust, a precleaner (12) is attached to the engine cover (11). In this state, large dust is removed in advance by the pre-cleaner (12), and the air is sucked into the air cleaner (9), so that clogging of the air cleaner (9) is reduced.

The reference numerals in the parentheses are for comparison with the drawings, but do not affect the structure of the present invention described in each claim.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall view of a combine to which the present invention is applied, and FIG. 2 is a left side view thereof. The combine 1 has a traveling body 8 supported by a pair of left and right crawler traveling devices 7, 7, and a driver's seat 5 is arranged on one side of the traveling body 8, and a Glen tank 6 is arranged behind the driver's seat 5. . A threshing unit 4 is provided on the other side of the traveling machine 8, and a pre-processing unit 3 is arranged in front of the traveling machine 8 so as to be able to move up and down.

The pre-processing unit 3 includes a divider 19 for weeding grain culms, a narrow guide 20, a conveying device 21, and a cutting blade (not shown). The grain is transferred to the feed chain 14 of the threshing unit 4, further threshed and sorted in the threshing unit 4, and the sorted grains are temporarily stored in the Glen tank 6. The grains stored in the Glen tank 6 are auger discharge cylinders 18 having a long cylinder that can be swung upright from the rear of the Glen tank 6.
Is carried out of the machine.

An engine cover 11 for covering an engine room 10 in which the internal combustion engine 2 is housed is provided at the rear side of the driver's seat 5. The power of the internal combustion engine 2 is used to transmit the engine cover 11 via a transmission (not shown). The power is transmitted to the pre-processing unit 3 and the threshing unit 4 to perform the harvesting and threshing work, and the power is also transmitted to the crawler traveling devices 7 and 7 so that the machine body travels.

In this embodiment, the internal combustion engine 2 is housed in the engine room 10 together with an air cleaner 9 described later, and a pre-cleaner 12 is attached to an engine cover 11 constituting at least one side of the engine room 10 by the air cleaner 9. It was configured to be attachable so that it could be connected to.

That is, as shown in FIG. 3, the internal combustion engine 2 is housed in the engine room 10 together with the air cleaner 9, and in the present embodiment, the engine cover 11 covers the right side of the engine room 10 with respect to the body traveling direction. The engine room 10 is separated from the outside air by the engine cover 11. The engine cover 11 is rotatably supported about a pivot 17 at the lower end as shown by a two-dot chain line in FIG.

In this embodiment, the case where the engine cover 11 partitions the right side of the body of the engine room 10 has been described as an example. However, the present invention is not limited to this. An embodiment that partitions the front and rear side surfaces is also conceivable. Also, the case where the mounting means of the engine cover 11 is supported rotatably about the lower rotation fulcrum 17 has been described. However, for example, the engine cover 11 is detachably mounted on the body by fastening means or the like. Is also good.

The internal combustion engine 2 and the air cleaner 9 are air-tightly connected by a connecting pipe 50 made of a synthetic resin hose, a rubber hose, a thin iron pipe, or the like, and further connected to the air cleaner 9 so as to be connected thereto.
A precleaner 12 is detachably mounted above the engine cover 11.

The air cleaner 9 removes dust and dirt from the air and supplies clean air to the internal combustion engine 2. The precleaner 12 has an air intake port on the outside air side upstream of the air cleaner 9 at a stage preceding the air cleaner 9. Placed in
Large dust in the air is removed in advance, and serves to reduce clogging of the air cleaner 9 arranged at the subsequent stage as much as possible.

A base end of a first connecting tube 13 is connected to an intake port 9a of the air cleaner 9, and the other end opening 13a of the first connecting tube 13 is
Are arranged facing each other so as to face the space above. This first
Is formed of, for example, a synthetic resin hose or a rubber hose.

At the upper end of the engine cover 11,
A second connection tube 15 made of a synthetic resin pipe or the like is detachably attached via a not-shown attachment hole. Further, a joint ring 51 is attached to one end 15a of the second connection tube 15, and the one end 15a is connected to the other end opening 1 of the first connection tube 13 via the joint ring 51.
3a. Further, the joint ring 5
1, the other end opening 13a of the first connecting cylinder 13 is
And one end 15a of the connecting cylinder 15 can be connected in an airtight manner. On the other hand, the other end side of the second connecting cylinder 15 extends upward from the upper end of the engine cover 11,
A pre-cleaner main body 16 is connected to the extension end at a position above the engine room 10.

The other end opening 13 of the first connecting cylinder 13
In order to maintain the airtightness between a and the one end 15a of the second connecting cylinder 15, it is preferable to interpose, for example, a packing member between the other end opening 13a and the one end 15a.

As described above, the engine cover 11
Is openable and closable about a rotation fulcrum 17. By rotating the engine cover 11, both the pre-cleaner main body 16 and the second connecting cylinder 15 open and close about the rotation fulcrum 17. When the engine cover 11 is closed, the first connecting cylinder 13
The other end opening 13a and one end 15a of the second connecting cylinder 15
And the other end opening 13 of the first connecting cylinder 13 when the engine cover 11 is open.
a and one end 15a of the second connecting cylinder 15 are separated from each other.

In this embodiment, as shown in FIG. 2, the pre-cleaner main body 16 is disposed at the highest position above the fuselage and is in a normal use state with the engine cover 11 closed. In other words, the pre-cleaner main body 16 sucks the air above the body and supplies it to the air cleaner 9. Also,
When the engine cover 11 is turned around a turning fulcrum 17 at the lower end and opened, the pre-cleaner main body 16 is located at a lower position. In addition, this pre-cleaner body 16
Cover 16a is made of a transparent resin so that the internal state can be visually recognized.

The pre-cleaner 12 is mounted as required. When the pre-cleaner 12 is not mounted, the pre-cleaner main body 16 is removed from the engine cover 11 together with the second connecting cylinder 15 and is mounted. The hole is opened as it is, or a plug provided with a vent hole is attached to the mounting hole. In this case, the air cleaner 9
Is directly taken in from the other end opening 13a of the first connecting cylinder 13.

Next, the operation of the present embodiment will be described.

At the time of harvesting work in the field by the combine 1,
The traveling body 8 is driven by the power of the internal combustion engine 2, and the pre-processing unit 3 is controlled to move up and down to cut the planted grain culm,
Further, the threshing unit 4 performs threshing and sorting of the harvested grain culm. However, in an environment with a lot of dust, the air cleaner 9 that supplies air to the internal combustion engine 2 is severely clogged, and the air cleaner 9 must be cleaned frequently, which is troublesome. For this reason, large dust is removed in advance by the pre-cleaner 12 attached to the engine cover 11, and the air after removing the dust is supplied to the air cleaner 9, whereby clogging of the air cleaner 9 is reduced.

That is, in general, in the vicinity of the front of the combine 1, a large amount of dust and the like from the field scene is scattered due to cutting of the culm by the pre-processing unit 3, and in the vicinity from the center of the body to the rear, For threshing work in threshing section 4, etc.
Dust and dust adhering to the culm and grains are likely to be generated, and the surroundings of the airframe are relatively dusty. However, in the present embodiment, the pre-cleaner 12 is attached to the engine cover 1.
1 and at the highest position of the fuselage, air can be taken in a place with relatively little dust, so that not only the air cleaner 9 but also the pre-cleaner 12
Own clogging is also reduced. This eliminates the need for frequent cleaning or replacement of the air cleaner 9 and the precleaner 12.

To check whether the pre-cleaner 12 is clogged or whether replacement or cleaning is necessary after using the combine 1 for a long time, the engine cover 11 is moved to the lower end. To the right side of the fuselage around the rotation fulcrum 17. Then, pre-cleaner 1
2 also moves downward together with the engine cover 11 and moves to a low position. At this low position, the degree of contamination of the precleaner 12 is checked, and if necessary, replacement or cleaning is performed.

In this case, in a normal use state, the other end opening 13a of the first connecting cylinder 13 and one end 15a of the second connecting cylinder 15 close the engine cover 11 by the action of the joint ring 51. The first connection tube 13 and the second connection tube 15 are communicated with each other in an airtight manner by the pressing pressure when the engine cover 11 is opened, and when the engine cover 11 is opened at the time of cleaning or the like, the two are immediately separated by one touch. Therefore, there is an advantage that it can be easily operated. Further, in the present embodiment, since the cover 16a of the pre-cleaner main body 16 is made of a transparent resin, it is possible to easily visually check the inside of the inside from outside before disassembling.

In an environment where there is relatively little dust, the pre-cleaner 12 can be removed. In this case, the pre-cleaner main body 16 is removed from the engine cover 11 together with the second connecting cylinder 15. In this case, the air is sucked into the air cleaner 9 from the other end opening 13 a of the first connecting cylinder 13. The mounting holes for the pre-cleaner 12 formed in the engine cover 11 have:
A plug provided with a vent hole is attached as needed.

Next, FIGS. 4A and 4B are views showing the structure of an auger receiver 22 for supporting the auger discharge tube 18 from below.

That is, behind the driver's seat 5, there is provided an auger receiver 22 for supporting a middle portion in the longitudinal direction of the auger discharge tube 18 from below, and the auger receiver 22 is a column which stands upright from the body frame side. 23, and a substantially V-shaped receiving seat 24, 2 opened upward at the upper end of the support 23.
5 are arranged facing each other. The auger discharge cylinder 18 has a hook 26 protruding from the lower surface side, and a lever 28 having a lock claw 28a at a tip end thereof, which is rotatably mounted on a shaft 23 at an intermediate portion above the support column 23. Is provided. When the auger discharge tube 18 is stored, a middle portion of the auger discharge tube 18 is held in contact with the receiving seats 24 and 25, and further, the hook 26 provided on the lower surface side of the auger discharge tube 18 locks the auger discharge tube 18. The pawl 28a is locked and positioned and held.

As shown in FIG. 4 (a), rubbers 29, 29 as cushioning materials are attached to the receiving seats 24, 25, respectively. The attachment may be performed with an adhesive, but in consideration of easiness of replacement, it is preferable to attach with a bolt 30 and a nut 31 as shown in FIG. Also, as shown in FIG. 4A, the thickness of the rubber 29 is set so that a larger vibration during operation is not directly applied to the auger discharge cylinder 18 as shown in FIG. It is preferable to use a thick one.

FIG. 5 is a diagram showing an embodiment in which power is transmitted by a power transmission belt wound between a driving pulley and a driven pulley.

In this embodiment, a drive pulley 33 fixed to a Karaoke shaft 32 and an intermediate shaft 34 transmitted to a handle cylinder shaft are provided.
A power transmission belt 36 is wound between the driven pulley 35 and the power transmission belt 36. A clutch roller 37 supported by a clutch arm 39 is rotatably disposed on the power transmission belt 36. This clutch arm 39
It has a base-side arm portion 39a and a distal-side arm portion 39b integrally formed in a crank shape, and an intermediate portion thereof is rotatably mounted by a pivot 38. The proximal arm 3
At the end of 9a, a mounting hole 40 is formed.
, A spring 41 is stretched. Further, a stopper 42 is attached to the body frame side located on the swing path of the clutch arm 39.

When the clutch roller 37 is pressed against the belt 36 by the urging pressure of the spring 41, the tension of the belt 36 is tightened and the driving pulley 3
The power transmission from the drive pulley 3 to the driven pulley 35 is ensured, and the belt can cope with belt elongation.

On the other hand, due to the belt elongation due to the load fluctuation on the driven pulley 35 side, the clutch arm 39 rotates more than necessary around the pivot shaft 38, and the belts on the tension side and the loose side come into contact with each other, and the belt is worn out. Although the belt may be broken on the drive pulley 33 side and the belt may be broken, according to the present embodiment, the clutch arm 39
If the clutch arm 3 tries to rotate more than necessary,
9 comes into contact with the stopper 42, so that the clutch roller 37
The contact of the belt at the section and the winding of the belt on the drive pulley 33 side are prevented.

FIGS. 6A to 6C show the first gutters 52 and 2.
The stopper structure of the operation lever 43 for cleaning the gutter 53 is shown.

That is, the operation lever 43 has its base end side pivotally mounted on a fulcrum shaft 54 so as to be swingable, and its upper end side is provided with a stopper frame 45 fixed to the frame side plate 44 of the threshing unit.
It is locked to. A connection arm 56 is linked to the operation lever 43 at the base end thereof, and the connection arm 56 can swing about the fulcrum shaft 55 in the same direction as the operation lever 43. The stopper frame 4
5 is a vertical piece 45a fixed to the frame side plate 44,
A horizontal piece 45 bent substantially at right angles to the vertical piece 45a.
b in the horizontal piece 45b,
6 are formed. When the operation lever 43 is fitted into the notch 46, the operation of the operation lever 43 is restricted. When the operation lever 43 is separated from the notch 46, the operation lever 43 and the connecting arm 56 are connected to the fulcrum shaft 5.
It can be operated in the direction of arrow A with the center at 4,55. Brackets 57 and 58 are integrally connected to the base ends of the operation lever 43 and the connecting arm 56, respectively.
9, 60 are mounted. These torsion coil springs 5
One end of each of the first and second gutters 52 and 53 is fixed to one of the brackets 57 and 58.
It is in contact with the lower part of 3a. Then, the operation lever 43
Is operated in the direction of arrow A, the brackets 57, 58 rotate clockwise and counterclockwise, respectively, and the bottom plates 52a, 53
a is opened downward, and the first gutter 52 and the second gutter 53 can be cleaned.

By the way, as shown in FIG. 6B, simply inserting the operating lever 43 into the cutout recess 46 does not
The sorting belt comes into contact with the operation lever 43 or the like, or the vibration causes the operation lever 43 to separate from the notch concave portion 46 and move to the position indicated by the two-dot chain line in FIG.
a is opened downward, and the paddy may leak from the first gutter 52 and the second gutter 53. That is, in the configuration shown in FIG. 6B, the operability of the operation lever 43 is good, but the operation lever 43 may easily come off the home position due to vibration or the like.

Therefore, in this embodiment, as shown in FIG. 6C, a cylindrical pipe 47 is integrally fixed to a corner of the stopper frame 45, and a crank-shaped stopper 48 is attached to the cylindrical pipe 47. Insert the positioning pin 4
9 is attached, the positioning pin 49 is
And the stopper 48 is positioned. That is, when the positioning pin 49 is in contact with the horizontal piece 45b of the stopper frame 45 by rotating the stopper 48, the operating lever 43 is set to the normal working position as shown in the figure. Is located on the side of the operation lever 43, and the operation lever 43 cannot be removed from the cutout recess 46.

Next, from this position, the stopper 48 is rotated upward by approximately 90 degrees, and at the position where the positioning pin 49 is in contact with the vertical piece 45a of the stopper frame 45, the stopper 48 is moved from the side of the operation lever 43. Then, the operation lever 43 can be moved to a position where the operation lever 43 can be cleaned. In the present embodiment, the stopper 4 is provided by the positioning pin 49.
8 has been described as being able to be positioned between the restriction position and the operable position.
A hole may be formed on the fifth side, and a means for inserting and removing the positioning pin 49 in this hole may be used.

[0044]

According to the first aspect of the present invention, when a working vehicle is used in a dusty environment, a precleaner is attached to an engine cover in advance, dust is removed by the precleaner, and the air cleaner is used. It is possible to reduce clogging and reduce the frequency of cleaning the air cleaner. Also,
Since the pre-cleaner can be attached to the engine cover, the pre-cleaner can be easily attached as required.

According to the second aspect of the present invention, when the engine cover is closed, one end of the second connecting cylinder attached to the engine cover is opened at the other end of the first connecting cylinder. And the other end is connected to the pre-cleaner body outside the engine room, and when the engine cover is closed, the external air is automatically removed by the pre-cleaner while dust is being removed. It is sucked.

According to the third aspect of the present invention, when the engine cover is open, the first connecting cylinder and the second connecting cylinder are separated from each other, and can be easily cleaned.

According to the fourth aspect of the present invention, in a normal use state in which the engine cover is closed, the pre-cleaner main body is located above the body and can be sucked in an environment with relatively little dust. When the pre-cleaner is rotated and opened about the lower end portion, the pre-cleaner is also at the lower position by being rotated downward, so that the pre-cleaner main body can be easily and reliably cleaned.

[Brief description of the drawings]

FIG. 1 is an overall external view of a combine to which the present invention is applied.

FIG. 2 is a side view of the same.

FIG. 3 is a cross-sectional view of the engine room.

FIG. 4A is a diagram showing an auger receiving structure;
(B) is a figure which shows the structure after the improvement.

FIG. 5 is a diagram showing a power transmission mechanism using a power transmission belt.

6A is a cross-sectional side view of the threshing unit, FIG. 6B is a schematic perspective view of a stopper frame, and FIG. 6C is a schematic perspective view of the stopper frame after improvement.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Combine (moving vehicle) 2 Internal combustion engine 3 Pre-processing part (working machine) 4 Threshing part (working machine) 7 Crawler running device (running device) 9 Air cleaner 9a Intake port 10 Engine room 11 Engine cover 12 Precleaner 13 First Connecting tube 13a Opening at the other end 15 Second connecting tube 15a One end 16 Precleaner main body 17 Rotating fulcrum 50 Connecting pipe 51 Joint ring

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Sakae Sonoyama 667 Iida-cho, Iza-cho, Higashi-Izumo-cho, Yatsuka-gun, Shimane 1 F term in Mitsubishi Agricultural Machinery Co., Ltd. (Reference) 2B074 AA01 AB01 AC02 BA04 CD02 CD06 DA02 DA05 DC01 DE03 DF02 GH02 3D038 BA04 BA12 BB08 BC10 BC15

Claims (4)

[Claims] 1. A working vehicle having an internal combustion engine mounted thereon, the working machine driven by the power of the internal combustion engine, and the traveling device driven to move, wherein the internal combustion engine is disposed in an engine room together with an air cleaner for the engine. A mobile working vehicle, wherein the vehicle is configured to be attached to an engine cover that is housed and forms at least one side of the engine room so that a pre-cleaner can be connected to the air cleaner. 2. A first connecting cylinder connected to an intake port of the air cleaner is disposed in the engine room.
An opening at the other end of the first connecting tube is arranged facing the engine cover, and a second connecting tube is connected to the engine cover such that one end is connected to the opening at the other end of the first connecting tube. Mounting the second
The work vehicle according to claim 1, wherein the other end of the connecting cylinder extends outward from the engine room, and the precleaner main body is connected to the outside. 3. The engine cover is openable and closable together with the pre-cleaner main body and the second connecting cylinder. When the cover is in a closed position, the other end opening of the first connecting cylinder is connected to the second connecting cylinder. 3. An end of the connecting tube communicates with the connecting tube, and when the engine cover is in the open position, the other end opening of the first connecting tube and one end of the second connecting tube are separated. A working vehicle as described. 4. The engine cover is rotatably supported about a lower end portion and is opened and closed. The second connecting cylinder is disposed at an upper end portion of the engine cover and extends upward. The working vehicle according to claim 2, wherein the pre-cleaner main body is disposed above an airframe.