JPH062542A - Engine device for combine - Google Patents

Abstract

PURPOSE:To attain noise lowness of arm engine for a combine and compactness in a constitution of a machine body total unit. CONSTITUTION:An almost closed engine room for storing an engine 21 is provided in the lower part of a seat column, and also an engine radiator 22 is internally provided in a front column 23 before the seat column.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine device for driving various parts such as a traveling part of a combine and a threshing part.

[0002]

2. Description of the Related Art In existing combine harvesters, an engine radiator is integrally provided at one of the left and right sides of the engine, which is located outside the fuselage, in a position close to the engine, to cool the radiator by blowing air. Also, radial type fans are generally used.

[0003]

However, in the case of such an engine structure, the cooling air opening portion of the radiator cannot be closed, so that the opening ratio of the entire engine room becomes high, and the engine and the fan cannot be closed. The drive noise is noisy, and there is a drawback that it is not suitable for the current situation where a low noise type combine is desired.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a substantially hermetic engine room for accommodating an engine is provided in a lower portion of a seat column, and an engine radiator is internally provided in a front column in front of the seat column. It is possible to realize a low noise structure in which the engine room is tightly sealed by separating it from the radiator. Especially, in this case, the extra space under the step between the seat column and the front column is enlarged, and the fuel tank is placed in that space. By accommodating and arranging accessories and other devices such as a hydraulic tank and a hydraulic tank, the entire body can be made compact.

[0005]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is a perspective explanatory view of an engine part, FIG. 2 is an overall side view of a combine, FIG. 3 is a plan view thereof, and (1) in the figure is a track frame in which a traveling crawler (2) is installed,
(3) is a machine frame installed on the track frame (1),
(4) is a threshing section in which the feed chain (5) is stretched on the left side and the handling cylinder (6) and the processing cylinder (7) are built in, (8)
Is a mowing section equipped with a cutting blade (9) and a grain culm transport mechanism (10), (11) is a hydraulic cylinder for moving the mowing section (8) up and down through a main frame (12), and (13) is an exhaust chain. (14) The straw processing unit that faces the end, (15) is a grain tank that carries the grain from the threshing unit (4) through the lifting cylinder (16), and (17) is the tank (15). A discharge auger for discharging grains out of the machine, (18) is a driving operation unit (1
9) and a driver section including a driver's seat (20), and (21) is an engine provided below the driver's seat (20), and is configured to continuously mow grain culms and thresh.

As shown in FIGS. 4 to 6, the engine (21) is separated from the engine radiator (22) for cooling the combustion chamber of the engine (21), and the radiator (22) is operated and operated. The engine (21) is arranged in a driving column (23) which is a front column of (19), and a substantially closed box-shaped seat column (24) which supports the driver's seat (20) on the upper surface. The radiator (22) is installed at a position substantially above the upper surface of the step (25) arranged between the operation column (23) and the seat column (24), and air is supplied to the radiator (22). A radiator cooling sirocco fan (26) that blows air and radiatively cools the radiator (22) is integrally disposed substantially below the radiator (22) to provide an engine (21) and a radiator cooling fan. It is configured to achieve a reduction of noise.

On the right side of the seat column (24), a right side column (27) having a hollow interior is arranged, and an outside air intake port (28) formed on the right outer wall of the column (27). ) From the lower front end of the left inner wall of the column (27) to the right suction port (31a) opened on the outer right side of the fan casing (30) of the sirocco fan (26). The radiator (22) is sent to the fan (26) through the air to blow air to the radiator (22) to radiatively cool the radiator (22). The inside of the column (27) is connected to the sirocco fan ( 26) is formed in the air suction air passage (32).

Further, a left suction port (31b) similar to the right side is formed on the left outer surface of the fan casing (30), and two flanges (33) fixed to the left outer surface of the casing (30) are provided. 2 with a relatively large diameter at the suction port (34)
A flexible hose (35), which is an air duct for a book, is connected, and the middle part of the hose (35) is largely detoured along the left outer wall of the seat column (24), and the rear end of the left outer wall of the column (24). The upper end is inserted in the right lateral direction in the column (24) so that the other end suction port (35a) of the hose (35) faces the air passage (32) of the side column (27). Left and right inlets (3) of the sirocco fan (26)
Both 1a) and (31b) take in air from the outside air suction port (28) of the side column (27), so that dust and the like generated in the mowing part (8) at the left position of the sirocco fan (26) can be sucked in. By avoiding this, the radiator (22) and other dustproof nets are configured to prevent early clogging.

Furthermore, the sirocco fan (26)
An air passage casing (36) that guides cooling air from the radiator (22) to the radiator (22) is provided between the fan casing (30) and the radiator (22), and these radiator (22) and each casing (30) (36) are It is configured to integrally support the three members in the operation column (23) via a vibration isolating rubber or the like to prevent these vibrations from being transmitted to the operation column (23).

Further, the radiator (22) is provided in a forwardly inclined posture in which the radiator (22) is inclined forward toward the upper end thereof, and the water hose (37) is provided.
Cooling water inlet / outlet (3) for radiator (22)
8) (39) and the drain port (40) to the radiator (2
The oil cooler (42) of the hydraulic continuously variable transmission (HST) (41) that shifts the traveling speed is provided in front of the radiator (22) while the front side of 2) is projected forward. The radiator (22) and the oil cooler (4
It is configured to improve workability in maintenance of 2) and drainage work using the drain port (40).

The fan shaft (26a) of the sirocco fan (26) and the flywheel (43) of the engine (21).
The crank output shaft (21a) via the fan shaft (21a) is arranged substantially parallel to the lateral direction, and the fan shaft (26a) is connected to the counter shaft (45) connected to the output shaft (21a) via the universal joint shaft (44). ) Are interlockingly connected, and the counter shaft (45) is attached to a counter bearing (46) fixed to the machine base (3) side.
The input pulley (48) of the speed change mechanism (41) is interlockingly connected to the output pulley (47) integrally connected to the counter shaft (45) via the belt (49), and the sirocco fan (26) is supported. ) Input pulley (50)
The output pulley (47) is connected to the transmission shaft (53) parallel to the fan shaft (26a) which is interlocked with the belt (51) and the pulley (52) by the pulley (54) and the belt (5).
5), the counter shaft is formed outside the seat column (24) to form an engine enclosure room (56) (hereinafter, the engine room that covers the entire engine (21) in a substantially hermetically-sealed manner). By transmitting the rotation of (45) to each part of the belt, it is possible to select an appropriate vibration-proof rubber for the engine (21) that is not affected by the belt tension, and at the left outer wall of the seat column (24). The opening rate of the insertion hole (57) of the joint shaft (44) to be opened is suppressed to a small level, and the enclosed room (56) is opened.
It is configured to improve the airtightness and promote low noise by the synergistic effect of using belt transmission without using gears.

A partition wall (27a) for separating the suction air passage (32) from the engine enclosure room (56).
A communication hole (58) for communicating the air passage (32) and the room (56) is formed in the air passage, and the insertion hole (57) is also used as a ventilation hole for taking in outside air. 5
Air taken into the room (56) from 7) flows out into the air passageway (32) from the communication hole (58) above the opposite side, thereby lowering the ambient temperature in the room (56) to improve engine performance. It enables stable maintenance of
The cold heat effect is promoted by merging the warm air flowing out from the communication hole (58) and the cool air from the suction port (28) in the air passage (32).

By the way, in the surplus space (59) below the step (25), the fuel tank (6) of the engine (21) is
0), as well as the hydraulic tank (not shown) of the speed change mechanism (41)
Such accessory devices or other devices are provided so as to be able to be housed and arranged, and the structure of the entire body is made compact.

Further, an axial flow type engine cooling fan (61) is attached to the crank output shaft (21a) on the flywheel (43) side to increase air intake from the insertion hole (57). In addition to promoting ventilation in the room (56), the engine oil pan portion (21b) having poor cooling efficiency is preferentially introduced with cooling air to maintain stable engine performance. .

This embodiment is constructed as described above, and the radiator (2 which requires a large opening for cooling air) is used.
By arranging 2) away from the engine (21) arrangement position, the engine enclosure room (56) for accommodating the engine (21) can be made to be the maximum hermetically sealed state, and the engine noise A sirocco fan (26) can be used as a radiator cooling fan for cooling the radiator (22) by blowing air.
By using, the static and dynamic noise can be further reduced as compared with the conventional radial type fan.

Further, by providing the radiator (22) and the sirocco fan (26) on the front side of the machine body,
Maintenance and the like can be easily performed without removing the seat column or the like each time, and the suction of air in the sirocco fan (26) also avoids the vicinity of the fan (26) having a high dust generation rate, and the column (27). By sucking in the outside air from the right side of the machine, which is not affected by the harvesting work taken in from the outside air intake port (28) of
The fan (26) and the radiator (22) can be satisfactorily worked without being clogged with dust or straw.

Further, the surplus space (59) below the step (25) provided between the engine (21) and the radiator (22) and the sirocco fan (26) can be made a wide space region, and the fuel tank ( 60) and the like can be effectively used for installing equipment and devices.

FIG. 7 shows an open structure of the seat column (24). The seat column (24) is divided into a lower case (62) and an upper case (63), and the upper case (63) is placed on the back side. A right case (63a) that is divided substantially diagonally downward to the right and integrally connected to the side column (27) and a left case (63b) that is bolted and fixed to the lower case (62) are formed. Brackets (64) fixed to the front and rear lower ends of the column (27)
Is rotatably supported by a rotary fulcrum cylinder shaft (65) fixedly mounted on the machine base (3) via a collar (66) and a rotary fulcrum pin (67), and the left and right cases (63a) are supported. (63
In the closed state of b), these cases (63a) (63
(b) An inclined bent mating surface (68) formed on the peripheral edge of the opening
(69) is joined and fixed to form a substantially sealed engine enclosure room (56) inside, while the side column (27) is integrated with the right case (63a) around the pin (67) to the right. When the room (56) is rotated outward, the upper portion of the room (56) is diagonally opened to facilitate maintenance such as maintenance and inspection of the engine (21). In this case, the mating surface (68)
Since (69) is an inclined surface, it is easy to fit when closed and reliable joining can be performed.

Although it is desirable to use a centrifugal fan such as a cross flow fan other than the sirocco fan (26) as the radiator cooling fan, an axial flow fan may be used.

[0020]

As is apparent from the above embodiments, according to the present invention, a substantially hermetic engine room (56) for accommodating the engine (21) is provided below the seat column (24) and the seat column (24) is provided. Front front column (2
Since the engine radiator (22) is internally provided in 3), the engine (21) is separated from the radiator (22) to enable a low noise structure in which the engine room (56) is highly sealed. In particular, in this case, the extra space (59) under the step (25) between the seat column (24) and the front column (23) is effectively expanded, and the fuel tank (60) or It is possible to store and arrange auxiliary equipment such as a hydraulic tank and other devices, and it is possible to make the entire body compact, which is a remarkable effect.

[Brief description of drawings]

FIG. 1 is a perspective explanatory view of an engine unit.

FIG. 2 is an overall side view of the combine.

FIG. 3 is an overall plan view of the combine.

FIG. 4 is a side view of an engine section.

FIG. 5 is an explanatory plan view of an engine section.

FIG. 6 is an explanatory plan view of an engine section.

FIG. 7 is an explanatory diagram showing an open state of an engine room section.

[Explanation of symbols]

(21) Engine (22) Radiator (23) Operation column (front column) (24) Seat column (56) Engine room (engine enclosed room)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akihiko Nakaya 1-32, Chaya-cho, Kita-ku, Osaka City Yanmar Agricultural Machinery Co., Ltd. Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Koji Moriyama 1-32 Chayamachi, Kita-ku, Osaka City Yanmar Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] 1. A combine engine apparatus comprising a substantially hermetic engine room for accommodating an engine in a lower portion of a seat column, and an engine radiator provided in a front column in front of the seat column.