JPH10201332A - Combine dustproof structure - Google Patents

Abstract

(57) [Problem] To provide a dustproof structure of a combine which can also remove dust having a high degree of adhesion to a dustproof net. SOLUTION: A dustproof net 12 is provided at an introduction portion R for introducing outside air into an engine room 3, and a draft device 11 for introducing outside air from the introduction portion R is provided so as to be switchable between forward rotation and reverse rotation. A brush 1 for scraping and cleaning the outer surface of the dust-proof net 12 when the blower 11 is operated in a reverse rotation state in which air is blown outward from the engine room 3;
4 is a dustproof structure of a combine configured to stop the operation of the brush 14 when the wind generator 11 is operated in the normal rotation state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dustproof structure for a combine.

[0002]

2. Description of the Related Art Conventionally, as a dustproof structure of this type of combine, in order to prevent clogging due to dust adhering to a dustproof net, a dust generator is driven in reverse to remove dust from the dustproof net. Known are those that can be blown away.

[0003]

However, in the conventional dust-proof structure of a combine, simply driving the wind-up device in the reverse direction does not sufficiently remove dust adhering to the dust-proof net. It could not be removed.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a dustproof structure of a combine which can well remove dust having a high degree of adhesion to a dustproof net.

[0005]

[Means for Solving the Problems]

(Structure) In the dustproof structure for a combine according to claim 1 of the present invention, a dustproof net is provided at an introduction portion for introducing outside air into an engine room, and a draft device for introducing outside air from the introduction portion is rotated forward. When the wind generator is operated in a reverse rotation state in which air is blown outward from the engine room, a brush for scraping and cleaning the outer surface of the dustproof net is operated, and When the wind device is operated in the normal rotation state, the operation of the brush is stopped.

According to the first aspect of the present invention, normally, the wind generator is driven to rotate in the normal direction to introduce the outside air, and the dust contained in the outside air is captured by the dustproof net. Relatively clean air can be introduced. At that time, the dust-proof net cleaning brush is stopped. On the other hand, if the dust adhering to the dust net increases the resistance to the introduction of outside air, the wind generator is driven in reverse to remove the dust attached to the dust net, and the dust net cleaning brush is dust-proof. Since the outer surface of the net is scraped and cleaned, the dust scraped by the brush receives the outward wind and scatters to the outside of the machine, so that it does not adhere to the dust net again during the cleaning. You can do it.

(Effects) Therefore, according to the configuration of the first aspect of the present invention, dust is prevented by cooperation of scraping of dust from the dustproof net by the brush and outward blowing by the reversal of the drafting device. In a state where the dust of the net is scattered to the outside, the dust which is strongly entangled with the dust net can be scraped off with high reliability with a brush, and the dust adhering to the dust net can be cleaned and removed satisfactorily. In other words, simply reversing the blast device does not sufficiently remove the adhering dust, and simply cleaning the dust-proof net with a brush may cause dust to adhere to the dust-proof net again during the cleaning, or remove it with a brush. Although there is a possibility that the generated dust may accumulate in the vicinity of the dust-proof net, the present invention can solve these problems.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show an all-culm input combine as an example of the combine. In this combine, an engine room 3 is provided between an operation unit 1 and a Glen tank 2 in the fuselage. As shown in FIGS. 3 and 4, the engine room 3 is vertically divided into two chambers, and the engine main body 4 is disposed in the lower main engine room 3 </ b> A. A radiator 5 is provided in the divided sub engine room 3B.
Has been arranged.

The sub engine room 3B has an intake box 6
And an outside air intake 7 is provided on the lateral outer surface of the intake box 6. The radiator 5 is disposed inside the intake box 6 on the inner side. A fan shroud 8 is continuously provided on a surface of the radiator 5 on the rear side of the fuselage.
The cooling fan 9 which raises a cooling wind is arrange | positioned inside. As shown in FIGS. 3 and 4, the cooling fan 9 is rotatably driven by a hydraulic motor 10 so that the cooling fan 9 can rotate normally and reversely. Here, the cooling fan 9 and the hydraulic motor 10 constitute a draft device 11. The outside air inlet 7 is provided with a dustproof net 12 extending therethrough. The dust-proof net 12 filters dust such as floating straw so as not to mix with the cooling air of the radiator 5. Here, the passage of the cooling air from the outside air inlet 7 to the radiator 5 in the outside air inlet 7 and the sub engine room 3B constitutes an introduction portion R for introducing outside air to the radiator 5.

A brush 14 that is driven to rotate by an electric motor 13 is provided on the outer surface of the dustproof net 12. That is,
A brush 14 is integrally connected to a tip of the output shaft 13a of the electric motor 13 with the reduction gear installed in the intake box 6 which extends outside the dustproof net 12, and the brush 14 is scraped. The taking action portion is in contact with the outer surface of the dust-proof net. As shown in FIG. 4, an opening K through which dust accumulated in the intake box 6 can be discharged to the outside is provided on the bottom surface of the intake box 6, and a lid F that opens and closes the opening K is provided. . This lid F
Is elastically urged by a closing alligator spring (not shown), and is opened by an electromagnetic actuator 30.

The hydraulic motor 10, the electric motor 13 and the electromagnetic actuator 30 are driven and controlled by a control device 15. The control device 15 includes a push-button type Of the cleaning command switch 16 is input. In the normal state, the control device 15 drives the hydraulic motor 10 to rotate in the normal direction and the cooling fan 9 controls the radiator 5.
In addition to supplying cooling air, the operation of the brush 14 is stopped to keep the opening K closed. The control device 15
When the cleaning command switch 16 is pressed, an operation signal is input, whereby the hydraulic motor 10 is driven to rotate in the reverse direction and the electric motor 13 is driven for a predetermined time. Is controlled so that the electromagnetic actuator 30 is operated so as to open, and after a lapse of a predetermined time, the control returns to the normal control.

With the above configuration, when the dust is attached to the dust-proof net 12 and the clogging state is severe, the operator presses the cleaning command switch 16 to rotate the cooling fan 9 for a predetermined time. The air is blown in a direction opposite to the cooling air so that the dust is scattered outward from the dustproof net 12 by being driven. At the same time, the brush 14 is also driven to rotate about the output shaft 13 a as a center axis, and the dust attached to the mesh of the dustproof net 12 is scraped off by the rotating brush 14. For this reason, the dust entangled in the mesh is also scraped off from the mesh, and at the same time, the scraped dust is immediately scattered outward by the backward blowing, so that the scraped dust is removed. Reattachment to the mesh is suppressed.
Further, when the opening K is opened, dust removed from the radiator 5 by the air blowing in the opposite direction, dust retained in the intake box 6, and the like are guided to the lid F that is inclined when opened. It is discharged outside through the opening K.

Next, a brief description will be given of a pre-air cleaner 18 for removing relatively large dust in advance separately from the air cleaner 17. As shown in FIGS. 3 to 5, an air cleaner 17 is provided in an intake pipe 19 to the engine body 4, and a relatively clean air can be taken in the tip of the engine room 3 along the upper and lower sides. As described above, a pre-cleaner 18 is provided at the air intake 20 of the intake pipe 19 which is erected high. This pre-cleaner 18
A fin 22 is integrally connected to the outer periphery of the upper end of the intake pipe 19 so as to form a spiral air introduction passage 21 around the outer periphery of the upper end of the intake pipe 19. Is connected to the cylindrical body 23 of the upper part, and further,
A downward bowl-shaped cover case 24 that covers the upper side of the cylindrical body 23 and the lateral side of the cylindrical body 23 is bolted. When the engine body 4 is operating, the gap between the cover case 24 and the cylindrical body 23 is closed by the negative pressure caused by the intake air. When the engine body 4 is not operating, the action of the negative pressure is released, so that the cover case 24 is released. A ring-shaped soft rubber-made thin plate-shaped valve body 25 is attached in a hanging state around the entire lower end edge of the cover case 24 so that a gap between the cover case 24 and the cylindrical body 23 is opened.

With the above configuration, the fins 22 are
As a result, the intake wind generates a swirling wind (cyclone) in the space S between the air inlet 20 of the intake pipe 19 and the cover case 24, and due to the centrifugal force caused by the swirling wind, the dust having large particles is separated from the outer periphery of the cylindrical body 23. Since it is designed to jump into the gap between the cover case 24 and the cover case 24, it is separated from the intake air. The separated dust accumulates between the thin plate-shaped valve body 25 and the cylinder body 23 closed inside by negative pressure. When the operation of the engine body 4 is stopped, the thin plate-shaped valve body 2
Reference numeral 5 denotes a posture in which the entire periphery hangs down from the lower end edge of the cover case 24 due to the shape return operation,
3 is opened downward, so that the accumulated dust falls naturally.

[Other Embodiment] The brush may be operated like a wiper of an automobile to clean the dust-proof net into a fan shape. The hydraulic motor is driven forward for a first predetermined time set to a relatively long time, and then for a second predetermined time set to a relatively short time (a time that does not adversely affect engine cooling). Alternatively, the reverse rotation drive of the hydraulic motor and the cleaning operation of the brush may be performed, and the operation in the first predetermined time and the operation in the second predetermined time may be automatically and alternately repeated.

[Brief description of the drawings]

FIG. 1 is an overall side view showing a combine.

FIG. 2 is an overall plan view showing a combine;

FIG. 3 is a longitudinal rear view showing an engine room during normal work.

FIG. 4 is a longitudinal rear view showing an engine room during a cleaning operation.

FIG. 5 is a vertical sectional side view showing the pre-air cleaner during operation (A) and non-operation (B).

[Explanation of symbols]

 Reference Signs List 3 engine room 11 draft device 12 dust-proof net 14 brush R introduction

Claims (1)

[Claims] A dust-proof net is provided at an introduction portion for introducing outside air into the engine room, and a draft device for introducing outside air from the introduction portion is provided so as to be switchable between forward rotation and reverse rotation. When operating the wind blower in a reverse rotation state in which the air is blown outward, operating a brush for scraping and cleaning the outer surface of the dustproof net, and operating the wind blower in a normal rotation state And a dustproof structure of the combine configured to stop the operation of the brush.