JPH085334B2 - Work vehicle engine bonnet structure - Google Patents

Description

The present invention relates to the structure of an engine bonnet and a driving cabin in a working vehicle such as a combine.

[Conventional technology]

In the combine, which is one of the work vehicles, the engine and radiator are arranged on the lateral side of the fuselage, and the upper surface of the engine bonnet that covers the engine and the radiator is provided on the intake duct for sucking cooling air for the radiator and on the driver's seat. There is something.

In such a combine, for example
As disclosed in Japanese Patent No. 542, there is one in which an operation cabin is attached so as to cover the upper surfaces of the engine bonnet and the intake duct.

[Problems to be Solved by the Invention]

As described above, the reason why the operation cabin is attached so as to cover the upper surfaces of the engine bonnet and the intake duct is to make the capacity of the operation cabin as large as possible. On the other hand, the intake duct provided on the upper surface of the engine bonnet is configured to have a depth inside the operating cabin so that the cooling air can be sucked in from the rear surface side of the intake duct.

Therefore, in such a structure, when the engine bonnet is tilted toward the outside of the machine to perform maintenance around the engine, the intake duct of the engine bonnet interferes with the operating cabin, so take measures such as removing the operating cabin. Without it, the engine bonnet cannot be tilted.

The work vehicle of the present invention has an engine bonnet structure,
The purpose is to configure the engine bonnet so that it can be easily tilted down without taking measures such as removing the driving cabin.

[Means for solving the problem]

A feature of the present invention is that the engine bonnet structure for a work vehicle as described above is configured as follows.

At the top of the engine bonnet that covers the engine and radiator located on the side of the fuselage, there is an intake duct that has an intake port that takes in cooling air for the radiator, and operates to cover the top of the engine bonnet and intake duct. While the cabin is provided, the air intake duct is divided into the engine bonnet side part connected to the engine bonnet and the operation cabin side part connected to the operation cabin by the inclined parting line that goes upward toward the outside of the aircraft, Together with the engine bonnet side part, the engine bonnet is supported on the outside of the machine so that it can be laid down freely.

[Work]

When the air intake duct (5) is divided into the engine bonnet side portion (5a) and the driving cabin side portion (5b) as in the present invention, the engine bonnet (3) is placed outside the machine body (paper surface) as shown in FIG. 3, for example. When operated by tilting to the left), the engine bonnet side part (5a) of the intake duct (5) will fall together with the engine bonnet (3) toward the outside of the aircraft.

During this tilting operation, the upper surface of the engine bonnet side portion (5a) of the intake duct (5) is located on the intake duct (5).
The engine bonnet (3) and the engine bonnet side part (5a) of the intake duct (5) fall down together with the air intake duct without interfering with the lower surface of the operation cabin side part (5b). Driving cabin side of (5) (5
b) remains in the driving cabin (6).

〔The invention's effect〕

As described above, by diagonally dividing the intake duct provided in the upper part of the engine bonnet, the engine bonnet and the part on the engine bonnet side of the intake duct can be separated from the vehicle body without special measures such as removing the driving cabin. You can easily tilt it outward and operate it,
We were able to improve the maintainability near the engine in the work vehicle.

Even if straw dust or the like enters the intake duct when cooling air is sucked into the radiator, the intake duct has a divided structure as described above in the present invention. Since it is opened, it becomes easy to clean the inside of the intake duct.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings using a combine that is one of the work vehicles.

As shown in FIGS. 1 and 5, the engine (1) and the radiator (2) are arranged on the right side of the front part of the airframe,
An engine bonnet (3) is provided so as to cover the engine (1) and the radiator (2). Driver seat (4) and intake duct (5) on top of engine hood (3)
Is provided, and the operation cabin (6) is attached so as to cover the upper surfaces of the engine bonnet (3) and the intake duct (5).

As shown in Figs. 1, 4 and 5, the intake duct (5) is equipped with a dust net-equipped intake port (5C) on the right side of the machine and the surface corresponding to the rear side of the machine. Due to the inclined dividing line (A) toward the engine bonnet side part (5a) where the intake duct (5) is connected to the engine bonnet (3) and the operation cabin side part (5b) which is connected to the operation cabin (6). It is divided into two.

With the above structure, in the closed state of the engine bonnet (3) as shown in FIGS. 1 and 5, the suction action of the fan (7) causes the intake port (3a) of the engine bonnet (3) with the dust-proof net and The cooling air that has entered from each intake port (5c) of the intake duct (5) is guided to the radiator (2). Inside the engine bonnet (3), there is provided a punching metal-like jammer plate (18) for dispersing the suction action of the fan (7).

To operate the engine bonnet (3) by tilting it around the front-rear axis (P ₁ ) to the outside of the machine, place the driver's seat (4) on the left and right shafts of the engine bonnet (3) as shown in FIGS. 2 and 4. Operate by tilting it forward around the wick (P ₂ ) to drive the cabin (6)
Open the door (8) of the car to the front of the machine to operate the driver's seat (4).
While passing through the open part of the door (8), the engine bonnet (3) is tilted to the outside of the machine and operated.
In this case, since the intake duct (5) is divided by the upward dividing line (A), as shown in FIGS. 1 and 3, the engine bonnet side portion (5a) of the intake duct (5). However, it will fall outward together with the engine hood (3) without interfering with the driving cabin side (5b).

As shown in FIG. 1, an air cleaner (9) is installed inside the operation cabin side portion (5b) of the intake duct (5),
An air cleaner (9) intake pipe (10) is installed inside the engine bonnet side part (5a), and an airtight packing (11) is provided on the outer periphery of the lower surface of the operating cabin side part (5b).
Is attached.

This combine is equipped with a hydrostatic continuously variable transmission (not shown) for traveling, and as shown in FIGS. 6 and 7, a trunnion shaft for operating the swash plate of the hydrostatic continuously variable transmission ( The bracket (13) with the hole (13a) is fixed to the hole (12). Attach the bolt (16) of the operation arm (15) to the rubber (14) fixed in the hole (13a) of the bracket (13).
Is inserted, and a gear shift lever (not shown) for the driver and the operation arm (15) are interlockingly connected via a linkage rod (17). With the above structure, the gear shift lever at the driver's hand can be used to perform the gear shifting operation of the hydrostatic continuously variable transmission, and the vibration from the trunnion shaft (12) is absorbed by the rubber (14) so that gear shifting on the driver side Does not reach the lever.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of an engine bonnet structure of a work vehicle according to the present invention. Fig. 1 is a vertical sectional front view of an engine bonnet and an intake duct, and Fig. 2 is a side view of a first half of a combine with a door removed. FIG. 3 is a schematic front view showing a state in which the engine bonnet is tilted outward and operated, FIG. 4 is an exploded perspective view of the engine bonnet, the intake duct and the operation cabin, FIG. 5 is a side view of the first half of the combine, and FIG. 6 is FIG. 7 is a cross-sectional plan view near the trunnion shaft in the hydrostatic continuously variable transmission, and FIG. 7 is a side view near the trunnion shaft in the hydrostatic continuously variable transmission. (1) …… Engine, (2) …… Radiator, (3)…
… Engine hood, (5) …… Intake duct, (5a)
...... Engine bonnet side part of intake duct, (5b) ...
… The part of the intake duct on the side of the driving cabin, (5c) …… the intake port of the intake duct, (6) …… the driving cabin, (A) …… the slanted dividing line.

Claims (1)

[Claims] 1. An intake port (5C) for sucking cooling air for a radiator (2) is provided at an upper portion of an engine bonnet (3) which covers the engine (1) and the radiator (2) arranged on the lateral side of the fuselage. The operation cabin (6) is provided so as to cover the upper surfaces of the engine bonnet (3) and the intake duct (5) by including the provided intake duct (5), and the inclined division line (A) that is directed upward toward the outside of the aircraft An engine bonnet side portion (5a) connecting the intake duct (5) to the engine bonnet (3) and a driving cabin side portion (5) connected to the driving cabin (6).
b) and the air intake duct (5) on the engine bonnet side (5)
An engine bonnet structure for a work vehicle that supports the engine bonnet (3) together with a) so that it can be laid down on the outside of the machine.