JP3238566B2 - Engine cover structure for combine harvesters - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover structure of an engine in a combine.

[0002]

2. Description of the Related Art In general,
In this type of combine, while supplying cooling air sucked by a cooling fan to a radiator arranged on one side of the engine room, hot air heated by passing through the radiator is passed through an engine arrangement section. The engine is configured to discharge from the other side of the engine room, but if there is not enough space between the engine and the cover that covers the engine room, hot air will stagnate in the engine room. In addition, a vicious cycle occurs in which the stagnant hot air is sucked into the engine room again through the space below the engine room. As a result, the engine cannot be cooled efficiently, and the entire engine room becomes overheated. There was a disadvantage that the operation section and the grain storage section near the engine room were adversely affected.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and aims to provide a cover structure of an engine in a combine which can eliminate these disadvantages. The first invention is one side
A cooling air supplied by a cooling fan is supplied to a radiator disposed on one side of an engine room in which a part, a front part, a rear part, and an upper part are covered with a cover body, and the radiator passes through the radiator In a combine configured to discharge the heated hot air from the other side of the engine room via an engine disposing portion, a rear cover body covering a rear portion of the engine room includes a rear cover body based on the flow of the hot air. Negative pressure
An engine cover body structure in a combine, wherein an auxiliary intake port for inhaling more cooling air or an auxiliary exhaust port for discharging the hot air is formed. In the second invention, one side, the front, the rear and the top are covered with a cover body.
Radiator arranged on one side of the engine room
In addition to supplying cooling air drawn by the cooling fan, the hot air heated by passing through the radiator is exhausted from the other side of the engine room through the engine installation part, and further, the rear of the engine room In a combine having a grain storage unit arranged with a space, the hot air flow is applied to a rear cover body that covers a rear portion of the engine room.
Forming an auxiliary suction port for sucking the cooling air by the negative pressure generated based on or an auxiliary discharge port for discharging the hot air,
An engine cover body structure in a combine, wherein a space between the rear cover body and the grain storage unit is configured as a cooling air intake path or a hot air discharge path.
The third invention covers one side, a front part, a rear part and an upper part.
The cooling air supplied by the cooling fan is supplied to the radiator provided on one side of the engine room covered with the body, and the hot air heated by passing through the radiator is passed through the engine mounting portion. In order to discharge from the other side of the engine room, further in the rear of the engine room, in a combine that secures a work space for bagging harvested kernels, a rear cover body covering the rear of the engine room,
An engine cover body in a combine, wherein an auxiliary suction port for sucking cooling air or an auxiliary discharge port for discharging the hot air is formed by a negative pressure generated based on the flow of the hot air . According to the present invention, with this configuration, the cooling efficiency of the engine is remarkably improved, and at the same time, the overheating of the entire engine room is prevented, so that the adverse effect on the driving section and the grain storage section can be eliminated.

[0004]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawing, reference numeral 1 denotes a combine of a Glentank specification. The combine 1 is a pre-processing unit 2 for cutting stem culms, a threshing sorting unit 3 for threshing and sorting the cut stalks, and discharging threshed stems and culms. Post-processing unit 4, a driving unit 6 provided with a driver's seat 5, a crawler type traveling unit 7, etc.
All of these basic configurations are conventional.

Reference numeral 8 denotes an engine room formed below the driver's seat 5. One side, front, rear and upper portions of the engine room 8 are covered with a side cover 9 and a front cover 10, respectively. , Rear cover body 11 and upper cover body 1
While covering 2 constructed so as to release the other side and bottom of the engine room 8, the upper surface portion of the upper cover member 12 is assembled is the driver's seat 5 and the rear cover 1 1
A grain tank 13 for storing the sorted grains is arranged behind the space S1.

Reference numeral 14 denotes an engine installed in the engine room 8. A right end portion of a crankshaft protruding left and right from the engine 14 has a right end portion for outputting engine power to a transmission (not shown). While the output pulley 15 is provided, a cooling fan 16 is provided at the left end of the crankshaft for forcibly sucking the cooling air. A radiator 17 through which the engine cooling water circulates is provided at the side end. And
When the cooling fan 16 is rotating, the suction port 9a formed in the side cover 9 and the front cover 10
The cooling air sucked from the suction port 10a is forcibly sucked through the suction port 10a formed in the front cover body 10 (however, the cooling air sucked from the suction port 10a merges into the suction port 9a via the hollow portion 10b of the front cover body 10).
At the same time, the cooling air is supplied to the radiator 17, and the hot air heated by passing through the radiator 17 passes around the engine 14 and enters the engine room 8.
Is discharged from the other side opening.

Reference numeral 11a denotes an auxiliary suction port formed in the rear cover body 11, and hot air passing through the radiator 17 is provided on the inner surface side of the auxiliary suction port 11a.
A suction guide plate 18 is integrally provided to allow the cooling air to be sucked in from the auxiliary suction port 11a while restricting the cooling air from being discharged from the auxiliary suction port 11a. The cooling fan 16
When the air is rotating, the hot air that has passed through the radiator 17 flows along the suction guide plate 18, but a negative pressure is generated inside and outside the auxiliary suction port 11a based on the flow of the hot air. The outside air passing through the space S1 between the body 11 and the grain tank 13 is positively
a into the engine room 8.

A dust cover 19 covers the auxiliary suction port 11a. The dust cover 19 is made of a so-called punched metal having a plurality of small holes 19a on the entire surface. The dimensions are set to allow smooth passage of the cooling air while restricting the passage of dust such as straw waste.

Further, reference numeral 20 denotes an electrical component such as a microcomputer provided in the engine room 8, and the electrical component 20 is disposed near the inner side surface of the rear cover body 11. Since it is at the leeward position of the auxiliary suction port 11a, cold outside air is always supplied.

In the embodiment of the present invention constructed as described above, the hot air heated by passing through the radiator 17 passes through the narrow space between the rear cover 1 and the engine 14 and the other side of the engine room 8. The hot air may be stagnant in the narrow space because the air is discharged from the rear part.
1 is formed with an auxiliary suction port 11a for sucking the cooling air by using the negative pressure of the hot air, so that the hot air to be stagnated is positively discharged from the other side of the engine room 8. Become. Therefore, the rear cover body 11 and the engine 14
Even if it is not possible to secure a sufficient space between them, the cooling efficiency of the engine 14 will be significantly reduced due to the stagnation or re-intake of hot air, and the entire engine room 8 will be overheated. Can be eliminated.

In addition, since the electrical component 20 that is weak to high temperature is disposed at the leeward position of the auxiliary suction port 11a, it is possible to always supply cold outside air and prevent the electrical component 20 from overheating.
Damage of the electrical component 20 due to overheating can be reliably avoided.

Further, the rear cover body 11 and the grain tank 1
3 is used as a cooling air suction path, so that the space can be effectively used and the structure can be simplified as compared with a case where the cooling air suction path is bothersome. Since the grain tank 13 can be actively cooled, it is possible to reliably prevent the grain tank 13 from being overheated by the heat conducted from the engine room 8. Therefore, it is possible to eliminate all inconveniences that the quality of the harvested grain is deteriorated.

It should be noted that the present invention is not limited to the above-described embodiment, and for example, FIGS.
A louver 1 which functions substantially the same as the suction guide plate 18 without providing the suction guide plate 18 as in the second embodiment shown in FIG.
1b may be formed by cutting and raising the rear cover body 11.
In this case, the number of parts can be reduced and the structure can be simplified.However, when the louver interval is set to be narrow, it is possible to regulate the suction of the straw and the like without the need to provide the dust cover. Since the louver 11b also functions as a reinforcing rib, there is an advantage that the rear cover body 11 can be formed of a thin plate. Further, even when the rear cover body 11 is formed with the auxiliary discharge port 11a for discharging the hot air as in the third embodiment shown in FIGS. 6 to 8, the stagnation of the hot air in the engine room 8 is prevented. However, if hot air is discharged from the rear cover body 11 in the grain tank specification, there is a possibility that the grain tank 13 may be heated, and therefore, a work space for bagging harvested grains behind the rear cover body 11. It is desirable to carry out in a so-called hopper-type combine in which S2 is secured.

[0014]

In summary, since the present invention is constructed as described above, the hot air heated by passing through the radiator is discharged from the other side of the engine room through the engine disposition portion. However, since the rear cover body that covers the rear part of the engine room is formed with an auxiliary intake port that inhales cooling air or an auxiliary exhaust port that discharges the hot air, hot air that has passed through the radiator is It will be discharged positively without stagnation.
Therefore, even if a sufficient space cannot be secured between the engine and the cover body covering the engine room, it is possible to reliably prevent the cooling efficiency from being lowered due to the stagnation or re-intake of hot air and the overheating of the entire engine room. And as a result,
An adverse effect on the driving section and the grain storage section near the engine room can be eliminated.

Further, in the case where the auxiliary suction port is formed in the rear cover body, a space for supplying the outside air is always provided on the leeward side of the auxiliary suction port.
There is also an advantage that it can be used for an installation space for electrical components and the like that are vulnerable to high temperatures.

Further, in a case where a grain storage section is provided with a space behind the engine room, a rear cover body may be provided.
In the case of forming an auxiliary inlet or auxiliary outlet may be of use the space between the rear cover and the grain receiving portion in the auxiliary intake <br/> auxiliary discharge path of the incoming path or heated air of the cooling air,
There is no need to secure a cooling air intake path or a hot air discharge path, which makes it impossible to effectively use the space and contributes to simplification of the structure. In addition, when the space is used as a cooling air suction path, it is possible to actively cool the grain storage unit by passing outside air. All inconveniences such as deterioration of grain quality can be eliminated.

[0017] Further, in the case where a bagging space for harvested grains is secured behind the engine room, even if an auxiliary suction port or an auxiliary discharge port is formed in the rear cover body, the cooling air suction path and Since there is no need to secure a hot air discharge path, there is an advantage that the space can be effectively used and the structure can be simplified.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a combine of a Glen tank type.

FIG. 2 is a rear view of an engine room.

FIG. 3 is a sectional view taken along line XX of FIG. 2;

FIG. 4 is a rear view of an engine room showing the second embodiment.

FIG. 5 is a sectional view taken along line XX of FIG. 4;

FIG. 6 is a perspective view showing a hopper-specific combine.

FIG. 7 is a rear view of an engine room showing a third embodiment.

8 is a sectional view taken along line XX of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Combine 8 Engine room 11 Rear cover 11a Auxiliary intake or exhaust port 14 Engine 16 Cooling fan 17 Radiator

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 6-12718 (JP, U) JP-A 54-48834 (JP, U) (58) Fields studied (Int. Cl. ⁷ , DB name) A01D 41/00-41/12

Claims (3)

(57) [Claims] 1. One side, front, rear and top covers
The cooling air supplied by the cooling fan is supplied to the radiator provided on one side of the engine room covered with the body, and the hot air heated by passing through the radiator is passed through the engine mounting portion. In a combine constructed so as to be discharged from the other side of the engine room, a rear cover body covering a rear portion of the engine room is provided with a base for the hot air flow.
Cover structure for an engine in a combine, characterized in that the formation of the auxiliary intake port or an auxiliary discharge port for discharging the hot air to suction cooling air by the negative pressure generated by Zui. 2. One side, front, rear and top covers
The cooling air supplied by the cooling fan is supplied to the radiator provided on one side of the engine room covered with the body, and the hot air heated by passing through the radiator is passed through the engine mounting portion. In the combine that is configured to discharge from the other side of the engine room, and furthermore, there is a space in the rear of the engine room and a grain container is disposed, the rear cover body covering the rear of the engine room The heat
Suction of cooling air by negative pressure generated based on the flow of wind
A combine, wherein an auxiliary suction port or an auxiliary discharge port for discharging the hot air is formed, and a space between the rear cover body and the grain container is configured as a cooling air suction path or a hot air discharging path. Of the engine cover body. 3. A side, front, rear and top cover.
The cooling air supplied by the cooling fan is supplied to the radiator provided on one side of the engine room covered with the body, and the hot air heated by passing through the radiator is passed through the engine mounting portion. In order to discharge from the other side of the engine room, further in the rear of the engine room, in a combine that secures a work space for bagging harvested kernels, a rear cover body covering the rear of the engine room,
An engine cover structure in a combine, wherein an auxiliary suction port for sucking cooling air or an auxiliary discharge port for discharging the hot air is formed by a negative pressure generated based on the flow of the hot air .