JPS6136408Y2 - - Google Patents

Description

[Detailed Description of the Invention] In the present invention, an engine equipped with a cooling radiator is mounted on a machine frame with the radiator positioned on the outer side of the engine, and a cover that covers the outer periphery of the engine and the radiator is provided. A dustproof net is provided over the cooling air inlet to the radiator, and a driver's seat is provided above the front part of the cover, and
The present invention relates to a dustproof structure for a riding type mobile agricultural machine, in which an intake duct with a dustproof screen is provided above the rear part of the machine for introducing engine cooling air into an engine cooling air path between the dustproof screen and the radiator.

The dust-proof structure of this type of riding type mobile agricultural machine is configured so that engine cooling air is introduced from the cooling air inlet on the front of the radiator and the intake duct provided above the rear of the cover. Compared to the case where only engine cooling air is introduced, the suction flow velocity of the cooling air is made as low as possible, and engine troubles such as overheating caused by clogging of the dustproof screen can be suppressed as much as possible. However, conventionally,
Since the cooling air introduction passage from the intake duct to the engine cooling air passage was formed only at the rear of the driver's seat when viewed from the side, the cross-sectional area of this cooling air introduction passage was small, and the suction force of the cooling fan was limited to the intake air. As a result, most of the engine cooling air is sucked in from the cooling air inlet, which causes the dustproof screen in this area to become clogged in a short period of time.
There was a problem in which dust removal work had to be carried out frequently on the dustproof net.

The technical problem that this invention aims to solve is to make it possible to draw in an appropriate ratio of cooling air introduced into the engine cooling air passage from the cooling air intake port on the front of the radiator and the intake duct. .

The technical measures taken to solve the above technical problems are to restrict the short-circuit inflow of engine cooling air that has passed through the dustproof net on the front of the radiator to the radiator side, and to A cooling air guide plate is provided to guide engine cooling air from the intake duct side to the radiator side, and a cooling air introduction passage is provided in the intake duct above the cover and extending over the entire area or almost the entire area below the driver's seat. This is true.

The above technical means works as follows. Cooling air directly introduced into the engine cooling air passage from the outside bypasses the side edges of the cooling air guide plate and reaches the radiator. Since the intake duct is connected to the engine cooling air passage, cooling air can be introduced over a wide area.

The intake duct has a wide opening for introducing cooling air, located under the driver's seat.
A passage for engine cooling air is formed between the cover that covers the outer circumference of the engine section and the driver's seat.

Therefore, the present invention has the following effects. Both the cooling air introduced through the intake duct and the cooling air introduced directly from the outside into the engine cooling air passage and guided by the cooling air guide plate can be introduced into the radiator side, reducing the flow velocity of the introduced cooling air. While keeping it as low as possible and using a fan with the same capacity as before,
The suction power of the fan can be applied sufficiently into the intake duct, and the cooling air can be sucked in at an appropriate ratio from the cooling air inlet on the front of the radiator and the intake duct. It has now become possible to avoid the complication of dust removal work caused by early localized clogging. Furthermore, since the cooling air introduction path portion located between the driver's seat and the cover functions as a heat insulating space, it also suppresses abnormal heating of the driver's seat due to radiant heat from the engine.
It has now been possible to sufficiently suppress the deterioration of driving comfort.

Hereinafter, an embodiment of the present invention will be described based on the drawings. The planted grain culm is raised and harvested at the front of the machine frame 3 equipped with the crawler traveling device 1 and the threshing device 2, An engine 7 equipped with a radiator 5 and a cooling fan 6 is placed on one side of the reaping pre-processing section 4 that is transported and supplied to the threshing device 2, and the radiator 5 is located on the outer side of the engine 7 and the cooling fan 6. These three people 5, 6,
The cover 8 covering the outer circumference of the radiator 5
A dustproof net 9 is installed over the cooling air inlet for the engine, and a driver's seat 10 is provided above the front of the cover 8, and a driver's seat 10 is installed above the front of the cover 8, and the engine cooling air is connected to the dustproof net 9 above the rear of the driver's seat 10. Intake duct 12 for introducing into engine cooling air passage 11 between radiator 5
In the dust-proof structure of the combine, the air intake duct 1 and the backrest 10A of the driver's seat 10 are integrally connected with each other with an appropriate distance between them.
A cooling air introduction passage 13 from 2 to the engine cooling air passage 11 is formed to extend over the entire area below the driver's seat 10.
A cooling air guide plate 14 having a width smaller than the width and length of the radiator 5 is provided inside the radiator 1.
As the cooling fan 6 rotates, the cooling air sucked through the dustproof net 9 is transferred to the guide plate 14.
The cooling air is introduced into the radiator 5 side while bypassing both upper and lower sides and both front and rear sides of the air intake duct, and at the same time, the cooling air drawn into the intake duct 12 is introduced into the radiator 5 side through the passage 13.

The intake duct 12 is approximately L in side view.
Among the side plates constituting this intake duct 12, the first front side plate 12A is located below the front end of the buttrest portion 10B of the driver's seat 10, and the first front side plate 12A is located immediately behind the backrest portion 10A. 2 front side plate 12B, rear side plate 12C and lateral outer side plate 12
A cooling air inlet is formed in each of the cooling air inlets D, and a dustproof net 15 is stretched over each of these cooling air inlets.

In the figure, 16 is an air cleaner provided in the intake duct 12, and 17 is a control box provided upright on the machine frame 3.

Further, as shown in FIG. 4, the cooling air guide plate 14 may be provided in an inclined position extending between the upper part of the dustproof net 9 and the lower end of the radiator 5. At this time, the cooling air sucked through the dustproof net 9 is introduced into the radiator 5 side while bypassing both left and right sides of the cooling air guide plate 14.

[Brief explanation of the drawing]

The drawings show an embodiment of the dustproof structure of a riding type mobile agricultural machine according to the present invention, in which Fig. 1 is an overall side view of the combine, Fig. 2 is a perspective view of the main parts, and Fig. 3 is a longitudinal sectional front view of the main parts. FIG. 4 is a longitudinal sectional front view of main parts showing another embodiment. 3... Machine frame, 5... Radiator, 7... Engine, 8... Cover, 9... Dustproof net, 10... Driver's seat, 11... Engine cooling air path, 12... Intake duct, 13... Cooling air introduction passage, 14...Cooling air guide plate, 15...Dust-proof net.

Claims (1)

[Scope of utility model registration request] An engine 7 equipped with a cooling radiator 5 is mounted on the machine frame 3 with the radiator 5 positioned on the outer side of the engine 7, and a cover 8 that covers the outer periphery of the engine 7 and the radiator 5 is attached to the radiator 5. A dustproof net 9 is installed over the cooling air inlet to the cover 8, and a driver's seat 10 is installed above the front of the cover 8.
An intake duct 12 with a dustproof screen 15 for introducing engine cooling air into the engine cooling air passage 11 between the dustproof screen 9 and the radiator 5 is provided above the rear part of the engine. In the dustproof structure of a riding type mobile agricultural machine, the engine cooling air passage 11
In this way, the engine cooling air that has passed through the dustproof net 9 on the front surface of the radiator 5 is restricted from flowing into the radiator 5 side in a short-circuit manner, and the engine cooling air from the upper air intake duct 12 side is guided to the radiator 5 side. A cooling air guide plate 14 is provided in the air intake duct 12, and above the cover 8,
A dust-proof structure for a riding type mobile agricultural machine, characterized in that a cooling air introduction passage 13 is provided over the entire area or almost the entire area below the driver's seat 10.