JP2002127763A - Engine exhaust device for combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an engine exhaust device which prevents dust from invading, maintains output of an engine, and prevents seizure of the engine by providing a guide board for diverting and discharging exhaust and by forming an air supplying passage for guiding a discharge direction so as to be parted from a precleaner. SOLUTION: This engine exhaust device forms an upward air supplying passage 3 which is along an exhaust direction of a cooling fan 1, is constituted so as to branch off in two directions such as an exhaust direction which faces to its exhaust side 7 and obliquely ascends and an exhaust direction which flows down a descending passage 48, and is provided with a discharge route which is parted from a precleaner 8 and a discharge route wherein hot air of an engine compartment 13 is sucked out from a guide port 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process for discharging air from a cooling fan of an engine mounted on a combine.

[0002]

2. Description of the Related Art Conventionally, a cooling device comprising a radiator and a cooling fan is disposed above an engine to take fresh air and discharge exhaust air to a space between adjacent threshing sections and discharge the air toward the ground. As described in Japanese Patent Application Laid-Open No. 7-81437, the amount of exhaust air is limited when the air is exhausted from one gap, and when the wind speed is increased, diffused air reflected on the surface of the ground is generated to cause dust and dust to rise. In order to divide such exhaust air, there is known an engine room frame in which a ceiling portion is opened to provide a plurality of exhaust air spaces. However, in a combine equipped with a pre-cleaner above the fuselage, there is a problem in that the floating dust is wound up in the upper space together with the hot air, and the pre-cleaner inhales and accumulates inside the pre-cleaner, resulting in a decrease in output.

In a configuration in which the diverted exhaust air is discharged upward,
The airflow is disturbed and the dust is taken up by the pre-cleaner depending on the direction of the wind.The dust that has been drawn in accumulates and causes seizure of the engine. And a problem such as contact with an obstacle during storage occurs.

[0004]

SUMMARY OF THE INVENTION A guide plate for reducing exhaust resistance is provided to form an air passage for diverting exhaust air, and the exhaust air is guided in a direction of exhaust air away from the pre-cleaner so that exhaust air with dust is generated. It is an object of the present invention to provide an engine exhaust device in which the pre-cleaner is configured not to take air and the engine output is maintained and seizure is prevented.

[0005]

In order to achieve the above-mentioned object, an engine exhaust device has a structure in which exhaust air from a cooling fan is divided into upper and lower flows, and an air passage for discharging upward is directed away from the pre-cleaner. is there.

[0006] An air discharge path is provided at the top of the engine room frame along the exhaust direction of the cooling fan to discharge the air to the outside of the machine. Dividing means for merging can also be taken.

[0007] A wind direction plate is obliquely provided from an air outlet provided at an upper portion of an engine room frame, and a front end thereof faces a discharge side of a cooling fan. It is more effective to select the amount of exhaust air and divide it.

A guide plate is mounted on the engine room frame in a direction of the exhaust air away from the pre-cleaner extending above the engine room frame, and is formed at a high position by forming a shape having a certain guide length. It is even better to move the cleaner to a lower position.

A bottom plate for separating an intake chamber and an engine chamber connected to the radiator is inclined, and a guide port is provided at a terminal part which rises obliquely, and guides hot air from the engine to descending exhaust air of a cooling fan and to a lower part of the body. It is a configuration that sucks out.

[0010]

DETAILED DESCRIPTION OF THE INVENTION

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an engine exhaust device according to the present invention will be described with reference to an embodiment. FIG. 3 is an overall right side view of a combine, showing a pair of crawler traveling devices (17).
A cutting section (A) having a rotating fulcrum is provided at the front on a machine stand (18) connected to the vehicle, and a driver's seat (B) is provided at the right end.
And a grain tank (20) for temporarily storing grains is connected in series, and an engine (E) is mounted behind it to transmit power to each part of the working machine and a radiator (11) is mounted. By setting up the suction chamber (12), the planted grain culm is cut and raised in the cutting section (A), lifted and transported to the threshing section (C), and subjected to threshing treatment. The good grain is stored in the Glen tank (20) by a frying apparatus (21), and is in the form of a combine in which the auger (22) is swirled and discharged to a vehicle or the like at the time of appropriate discharge.

The engine (E) connected to the Glen tank (20) is provided with an anti-vibration rubber (2) laid behind the machine base (18).
3) to form an engine compartment (13), above which a radiator (11) and a cooling fan (1)
Is mounted above the engine (E) to integrally form an engine room frame (2). The filter section (30) for introducing outside air has a mesh plate (26) stretched over a wide area on the outer side surface (25) of the Glen tank (20) to reduce the intake air velocity and prevent dust from being adsorbed. In addition, an intake structure is provided on the side surface of the tank, which is hard to receive the hot air from the engine (E).

FIG. 1 is a rear view of a section of an engine room frame, and a bottom plate having both a ceiling portion of an engine (E) mounted on a rear corner of a machine frame (18) and a lower surface of an intake chamber (12). (15) is inclined toward the lower part of the cooling fan (1),
The guide port (16) opening to the upper part of the slope is connected to the engine room (13)
This is an engine exhaust device that opens to the entire width of the engine and joins the rising engine hot air to the high-speed exhaust air in the direction of the arrow (a) and guides and sucks it in the direction of the arrow (b).

An intake chamber (12) mounted above the engine (E) is provided with a cooling fan (1) facing the radiator (11) inside, and the intake chamber (12) gradually expands outward toward the intake. (12), and the bottom plate (15) is connected to the ventilation communication path (28) to increase the intake volume. A filter section (30) is provided in which a mesh plate (26) is stretched over a wide area on the side surface of the Glen tank (20) and the influence of the hot air from the engine is small so that an outside air intake path is provided.
The cooling air sucked in from behind and turned backward is sent from the ventilation communication path (28) to the intake chamber (12), passes between the radiation fins (31) of the radiator (11), and flows through the engine (E). It lowers the temperature rise of the cooling water circulating inside.

[0014] The air discharge path of the cooling fan is set by a flow direction plate (6) whose front end faces the space on the air discharge side (7) to adjust the air discharge amount and guide the opposing guide plate (1).
0), an air passage (3) that is inclined upward is formed, and a split flow structure is screwed onto the upper surface of the engine room frame (2) to extend the exhaust air discharged from the cooling fan (1). It is configured to be able to be guided in the exhaust direction away from the cleaner (8). Further, the wind direction plate (6) and the guide plate (10) opposed to each other.
Is arranged so that the tip overlaps in plan view to prevent rainfall etc. that directly enters the engine (E),
The water is drained out of the room through the drain hole (37) provided in 8).

FIG. 2 is a side view of a main part with a part of a cover opened;
The arrangement of the pre-cleaner (8) will be described with reference to the overall side view of FIG. 1. The air cleaner (33) is located adjacent to the engine (E).
The pre-cleaner (8) is extended above the engine room frame (2) in order to perform intake with less dust, and the pre-cleaner (8) is arranged to suction from a high place. 36) is provided and fixed, and connected to the air cleaner (33) by an intake hose (35). However, the installation height of the precleaner (8) is high, and the vibration of the body is easily amplified and transmitted. Become. In order to cope with this, measures are taken to increase the mounting strength, or the height of the design is restricted because it may cause an accident of contact with obstacles during storage. . In order to solve the problem of the height of the pre-cleaner (8), which is contradictory to the above, the air passage (3) for guiding the air in the separated exhaust direction is formed on the upper surface of the engine room frame (2). It is designed to prevent wind diffusion.

The cooling fan (1) shown in FIG. 1 is driven by winding a V-belt (43) around a fan pulley (42) from an engine pulley (40) via a counter shaft (41) and inputting the same. The threshing section sorting side plate (4
6) and a descending passage (48) formed by a partition (47) of the engine compartment (13). The vibration of the engine (E) rotates at a high speed because it passes through the counter shaft (41). Vibration transmission to the cooling fan (1) is shut off.
In the power transmission configuration directly driven from the engine (E) of the prior art, the cooling fan (1) has a vibration-free bearing (4).
5) Abrasion occurs, but the present invention is configured to prevent this.

FIG. 4 is a perspective view showing the flow of air supplied and discharged by the cooling fan, and the arrow (d) indicates the Glen tank (2).
0), cooling air is taken in from a filter section (30) provided on the side surface of the radiator (11). 3) shows the suction path leading to the cooling fan (1) that blows through the gap between the heat radiation fins (31) stretched in (1).
The air exhaust path is provided with a wind direction plate (6) that is inclined downward from an air outlet (5) that opens on the upper surface of the engine room frame (2), and the exhaust air is diverted with its front end facing the exhaust side (7). , An exhaust in the direction of the arrow (c) passing through the ventilation path (3) that rises obliquely,
8) shows an exhaust path separated into two directions, upper and lower, flowing down in the direction of arrow (a).

The direction of the arrow (b) is such that an induction port (16) is opened immediately below the cooling fan (1) in order to facilitate the induction and suction of the engine hot air at the exhaust speed in the direction of the arrow (a). The hot air of (13) indicates the wind direction to be sucked out by the exhaust air, and is discharged to the ground surface inside the crawler traveling device (17). The intake of the engine room (13) is performed by mounting the engine (E) on the framework of the machine frame (18), and has a structure in which the bottom surface has many open portions. The configuration is such that the surface temperature of the engine (E) is lowered, and hot air is sucked out from the guide port (16) which opens upward.

[0019]

According to the present invention, an exhaust device for diverting the exhaust air from the cooling fan up and down and an exhaust passage for guiding the exhaust air discharged upward in the exhaust air direction away from the precleaner are provided. It is effective.

An air passage is provided for guiding the exhaust air discharged upward in the exhaust air direction away from the precleaner, thereby preventing the floating dust from rolling up and diffusing, thereby reducing the intake of dust and prolonging the engine output. Maintainability has been improved, and the pre-cleaner can be moved to a lower position, simplifying the support structure.

The wind direction plate is inclined from the air outlet provided at the upper part of the engine room frame, and the end is made to face the exhaust side of the cooling fan to divide the exhaust air. Since the air can be exhausted to a plurality of locations, the resistance to the exhaust air is reduced, the amount of dust blown out to the surroundings is reduced, the amount of passing air is increased, and the cooling effect is improved.

A guide plate is provided in the exhaust direction away from the pre-cleaner extending above the engine room frame, and the guide length is selected, so that the floating dust is prevented from being hoisted up and the high-placed pre-cleaner is installed. The cleaner can be relocated to a lower position, simplifying the structure and reducing the number of accidents that contact obstacles.

The bottom plate for separating the intake chamber and the engine chamber connected to the radiator is inclined, and a guide port is provided at the lower part of the cooling fan so that the hot air of the engine is sucked into the flow of the exhaust air. Engine seizure could be prevented.

[Brief description of the drawings]

FIG. 1 is a rear view of a section of an engine room frame.

FIG. 2 is a side view of a main part partially opened.

FIG. 3 is an overall right side view of the combine.

FIG. 4 is a perspective view showing a wind direction of supply and exhaust air.

[Explanation of symbols]

E. FIG. . Engine 1. . Cooling fan 2. . Engine room frame
3. . Air blow path 5. . Outlet 6. . Wind direction board
7. . 7. Ventilation side . Precleaner 10. . information
11. . Radiator 12. . Intake chamber 13. . Engine room
15. . Bottom plate 16. . Induction port 17. . Crawler traveling device 18. . Machine stand 20. . Glen tank 23. . Anti-vibration rubber
26. . Mesh plate 28. . Ventilation connection 30. . Filter section
31. . Heat radiation fins 33. . Air cleaner 35. . Intake hose
38. . Room side plate 41. . Counter shaft 42. . Fan pulley
46. . Sorting side plate 47. . Partition wall 48. . Downward arrow (a). . Direction of exhaust air flowing down the downhill Arrow (b). . Engine hot air suction direction Arrow (c). . Direction of exhaust air discharged upward Arrow (d). . Cooling air intake direction

Claims (4)

[Claims] A radiator (11) is provided in an intake chamber (12) mounted above an engine (E) in a combine in which an engine is mounted on the rear of the body and an intake port of an air cleaner is provided above an engine room frame. An engine exhaust device for a combine, wherein an air passage (3) obliquely rising along a direction of exhaust air of a cooling fan (1) is formed at an upper portion of an engine room frame (2). 2. An air flow direction plate (6) which is inclined downward from an air discharge port (5) provided at an upper part of an engine room frame (2), and has a front end facing an exhaust side (7) of a cooling fan (1). The engine exhaust device of a combine according to claim 1, wherein exhaust air is diverted. 3. A combine as claimed in claim 1, wherein a guide plate (10) is provided in a direction of exhaust air away from a pre-cleaner (8) extending above the engine room frame (2). Engine exhaust system. 4. An intake chamber (1) communicating with a cooling fan (1).
A bottom plate (15) for separating the engine compartment (2) from the engine room (13) is obliquely provided, and a guide port (16) is opened at a terminal end on the ascending side to face the exhaust air descending path (48). The combine engine exhaust device according to claim 1.