JPH01127413A - Driver section structure for agricultural tractor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides an air inlet for introducing cooling air into a radiator for cooling an engine, which is provided in a side wall of an engine bonnet at a location near the radiator. Concerning the structure of the driving part of agricultural tractors.

[Conventional technology]

Conventionally, in the agricultural tractor described above, the intake port is located near the engine cooling radiator. Radiator cooling is efficient as it can supply everything from top to bottom.
Care was taken to make it possible.

(Problems to be Solved by the Invention) In the conventional case, since the vertical length of the intake port and the vertical length of the radiator are almost equal, the lower end of the intake port is located at a low level equal to or almost equal to the lower end level of the radiator. This made it easy for dust and other particles thrown up by the wheels to get into the engine bonnet through the air intake.

An object of the present invention is to enable cooling air to be supplied from the intake port to the radiator from top to bottom as much as possible, and to prevent dust from entering the engine bonnet from the intake port.

[Means for solving problems]

The characteristic configuration of the present invention is that, in the drive unit structure of the agricultural tractor described above, the intake port is formed so that its vertical length is smaller than the vertical length of the radiator, and is arranged at the same level as the upper end side of the radiator. In addition, a guide duct is provided for guiding a portion of the cooling air from the intake port to the lower part of the radiator. The functions and effects thereof are as follows.

[For production]

Even if the air intake is placed at a high level, equal to the top side of the radiator, where there is relatively little dust kicked up by the wheels, the air intake A portion of the cooling air from the intake port is supplied to the bottom of the radiator by the guide duct, and the intake port is at the same level as the top end of the radiator, so a portion of the cooling air from the intake port naturally flows to the top of the radiator. As a result, cooling air reaches both the upper and lower sides of the radiator.

〔Effect of the invention〕

The arrangement of the intake ports and the action of the guide ducts ensure that cooling air is supplied from the top to the bottom of the radiator, ensuring efficient engine cooling.

However, by placing the intake port at a high level due to the action of the guide duct, it is possible to prevent dust flying up from the wheels from entering the engine bonnet through the intake port, thereby preventing malfunctions of the engine and its attached equipment due to dust. Trouble can now be easily avoided.

〔Example〕

Next, examples will be shown.

As shown in Figure 1, the engine (E) is placed inside the engine bonnet (1) on the front side and the engine fuel tank (T) is placed on the rear side, and the engine cooling is placed behind the engine (E). The radiator (2) is arranged to constitute the driving part of the agricultural tractor.

To enable cooling of the radiator (2), the radiator (
A cooling fan (3) is provided between the engine (E) and the engine (E) so as to be rotationally driven by the engine (E). The first intake port (
4), and the left and right side walls (1) of the engine bonnet (1)
b), (1b) Cooling air is supplied from outside the engine bonnet to the radiators (2) through the second intake ports (5) with armor plates as shown in Figure 5, which are located near each radiator (2). The hot air after cooling the radiator is introduced from the rear side of the engine bonnet, and the hot air is passed through the exhaust ports (6a) or (7a) of the upper front grill (6) and lower front grill (7) of the engine bonnet (1) to the outside of the engine bonnet. It is configured to emit.

The left and right second intake ports (5), (5) are vertical lengths (
J) is formed to be smaller than the vertical length (L) of the radiator (2), and is arranged at the same level as the upper end side of the radiator (2). Then, on each of the left and right sides of the radiator (2), as shown in FIGS. 2 and 3,
A front guide +Ji (8) provided to close the gap between the radiator (2) and the engine bonnet side wall (1b) over the entire vertical length of the radiator (2);
The rear side is provided so that the gap between the radiator (2) and the engine bonnet side wall (1b) is closed on the upper side of the radiator (2), and the second intake port (5) is divided into front and rear parts. The guide plate (9), the radiator (2) itself, and a portion of the engine bonnet side wall (1b) each form a guide duct (TO) for a portion of the cooling air from the second intake port (5). . In other words, the cooling air taken in from the front part of the second intake port (5) flows through the cooling fan (
3) The side surface (2) of the radiator (2)
a) from the second intake port (5) to a lower level location, passing under the rear guide plate (9) and flowing into the radiator (2).
The liquid is introduced so as to flow into the lower part of the cooling rear surface of the engine. In other words, the dust kicked up to the side of the engine bonnet (1) by the front wheels (11) is removed from the second intake port (5).
) while making it difficult for the air to flow into the engine bonnet from the second intake port (5).
The cooling air from the rear part of the intake port (5) flows into the second intake port (5).
), the air naturally flows to the top of the radiator (2), and the guide duct (10) acts as a guide for the cooling air from the front part of the second intake port (5) as described above. This allows the cooling air from the second intake port (5) to leak from the top to the bottom of the radiator (2).

As shown in Figure 1, an exhaust muffler (12
) is equipped with a connection part (14) that allows the distal end pipe section (13a) to be separated from the base end pipe section (13b), and the distal end pipe section (13a) can be attached and removed, and the engine ( By bending and stretching the metal bellows part (13c) provided on the exhaust pipe in order to absorb the vibrations caused by the rubber mount in E), the engine exhaust is moved to the tip end pipe section as shown by the solid line in Figure 1. (13a
), and a mode in which the engine exhaust is discharged forward from the proximal pipe portion (13b) through the lower front grille (7) as shown by the imaginary line in Fig. 1. It is.

The lower front grill (7) is made of cast iron so that it also serves as a front balance weight. The upper front grill (6) is made of resin or sheet metal, and the lower front grill (7) is made with the headlamp unit (15) in between.
It is stacked and connected.

As shown in Fig. 4, the filler cylinder (16) of the fuel tank (T)
) and the bottom so that the electric fuel pump (P) can be connected to the switch cock (17).
) to the bottom of the tank to supply the remaining fuel in the fuel tank (16) to the fuel pump (P), and when the fuel pump (P) is filled with fuel, connect the fuel pump (P) to the fuel tank (16).
The fuel supply pump (P) is operated to supply fuel from the fuel container (18) to the fuel tank (T). Fuel cylinder (16) of fuel container (18)
), and can be refueled through the filter (19) provided in the refueling tube (16). Furthermore, it can be done with a relatively light and small oil supply pump (P) that requires "priming water", and the priming operation can be easily performed by simply operating the switching cock (17).

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the structure of the driving part of an agricultural tractor according to the present invention, in which Fig. 1 is a partially cutaway side view of the driving part, Fig. 2 is a perspective view of the cooling air supply path, and Fig. 3 is a radiator arrangement. FIG. 4 is a plan view of the installation part, FIG. 4 is a diagram showing how to load fuel for the engine, and FIG. 5 is a side view of the front part of the agricultural tractor. (1)...Engine bonnet, (1b)...
...Side wall, (2) ...Radiator, (5)
...Intake port, (10) ...Guide duct, (J), (L) ...Vertical length.

Claims (1)

[Claims] An agricultural tractor is equipped with an intake port (5) for introducing cooling air into a radiator (2) for cooling the engine, which is provided at a location near the radiator (2) on the side wall (1b) of the engine bonnet (1). In the driving part structure, the upper end of the radiator (2) is formed such that the intake port (5) has a vertical length (L) smaller than the vertical length (L) of the radiator (2). A drive unit structure for an agricultural tractor, which is provided with a guide duct (10) arranged at the same level as the side and guiding a part of the cooling air from the intake port (5) to a lower part of the radiator (2).