JPH0310090Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air cleaner arrangement structure for a traveling vehicle, and an object of the present invention is to prevent an increase in intake air temperature of a forward blowing cooling air type engine.

For example, in some running vehicles such as agricultural tractors, the cooling fan is of a forward blowing type so that hot air after cooling the engine mounted in the front part is not blown toward the operator. In this vehicle, a cooling fan is placed in front of the engine, and a radiator that is cooled by this is placed in front of it, and hot air is blown out to the front, so the battery cannot be placed in front of the radiator, and the engine and the cooling fan.

Also, since there is no space left to place the air cleaner in front of the radiator, it is conceivable to place it above the engine, but this is not preferable as it is directly heated by the engine, so it is best to place it in a large space above the battery. Become.

However, since some hot air flows from the engine to the cooling fan above the battery, it is necessary to prevent the air cleaner from sucking in the hot air. That is, if the intake air temperature increases, the engine charging efficiency decreases, causing knocking or a decrease in output, which is undesirable. Therefore, it is necessary to arrange the air cleaner inlet at a position where it is less affected by hot air.

The present invention was devised in view of these various problems, and its features are as follows:
In a running vehicle in which a forward blowing cooling fan and a radiator are disposed in front of the engine, an air cleaner is disposed between the engine and the cooling fan, and its suction port is placed close to and facing the cooling fan.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

1 to 3 show an embodiment of the present invention, and show the front structure of a tractor 1, which is an example of a traveling vehicle. Reference numeral 2 represents an engine, and there are two pairs of left and right engines at the bottom of both sides of the engine 2. A frame 3 is provided to project forward. Below this frame 3,
A front axle supporting front wheels (not shown) is installed horizontally.

A battery 4 is placed on a frame 3 in front of the engine 2, a radiator cooling fan 5 is rotatably supported in front of the battery 4, and a radiator 6 is placed in front of the fan 5. An air cleaner 7 is provided above the battery 4. These engine 2, battery 4, radiator 6, etc. are covered by a bonnet 8. Bonnet 8
consists of a top plate 9, an upper plate 10, a side frame 11, a lower plate 12, a front grille 13, etc.

As shown in FIG. 2, a midway portion of the bonnet 8 in the longitudinal direction is supported by a bonnet support frame 14, which is erected between the battery 4 and the fan 5. The support frame 14 includes a pair of left and right vertical bars 15 and a horizontal bar 16 that connects the upper portions of the vertical bars 15.
The lower part of the vertical rod 15 is connected and fixed to the front axle frame 3, and the top plate 9 of the bonnet 8 is connected and supported via the horizontal rod 16.

A bracket 18 that rotatably supports a drive shaft 17 of the fan 5 is fixed to a midway portion of the support frame 14 in the vertical direction, and the drive shaft 17 is supported by the bracket 18 via a bearing member 19. .
The drive shaft 17 passes above the battery 4,
The rear end is rotatably supported on the front surface of the engine 2, and is connected to the engine 2 via a fan belt 20.
It is driven by a crankshaft. The fan 5 rotated by the drive shaft 17 generates cooling air in the direction of arrow a in the figure, that is, in a forward direction.

As shown in FIG. 1, an air cleaner support bracket 21 is fixed to the bonnet support frame 14 above the bracket 18, and the air cleaner 7 is attached to the bracket 21. The intake pipe 22 of the air cleaner 7 is bent so that it once rises upward from the air cleaner 7 and then descends downward, and the tip thereof has a cone-shaped suction mouthpiece 24 with a suction port 23 made of punched metal. is provided. This suction port 23 substantially faces and is close to the fan 5, and is capable of sucking in a portion of the air sucked into the fan 5. 25 is the bonnet support 14
This is an insect screen attached to the fan 5 and the radiator 6.

By directing the suction port 23 of the air cleaner 7 toward the fan 5 side in this way, the air cleaner 7
Even if it is closer to engine 2 than radiator 6,
Since hot air from the engine 2 is not sucked in, and high-temperature intake air is sucked in, the filling rate of the engine 2 does not decrease, knocking, output decrease, noise generation, etc. occur, and normal outside air is generated. Can be inhaled. In addition, the suction port 23 is connected to the cooling fan 5.
Since the air is sucked in the opposite direction to the wind generated by the blower, less large-mass debris is sucked in.

As shown in FIGS. 1 and 3, a water inlet 32 is provided in the upper part of the radiator 6.
The top plate 9 corresponding to the top plate 9 is provided with an opening 34 having a lid 33 that can be opened and closed. radiator 6
Shielding members 35 and 36 are provided to close the gap between the outer circumferential surface of the radiator 8 and the inner circumferential surface of the bonnet 8. The shielding member 35 is attached to the frame member 37 of the radiator 6, and the shielding member 36 Both shielding members 35 and 36 are attached to the peripheral surface and are made of sponge or the like. The shielding member 38 around the water inlet 32 is
It detours rearward and contacts the lower surface of the open peripheral edge so that water can be poured into the water inlet 32 from the opening 34. Therefore, the inside of the bonnet 8 is completely divided into a cooling air intake side and an exhaust side by the radiator 6 and the shielding members 35, 36, and 38, and the cooling air from the fan 5 passes through the radiator 6 and then returns to the cooling air intake side. This prevents the cooling efficiency of the radiator from decreasing.

The shielding members 35 and 36 are provided separately for the radiator 6 and the bonnet 8.
Since it is made of sheet metal, its accuracy is low and it is prone to slight deformation, and the mounting position may be different, so if only one shielding member is used, a gap may be created between it and the bonnet 8. Yes, there,
This is because the shielding member may come off due to sliding contact or catching when the bonnet 8 is opened and closed.
The contact portions of both shielding members 35 and 36 are illustrated in FIG.

In FIG. 4A, the shielding member 35 has a rectangular cross section, and the shielding member 36 has a triangular shape with a narrow tip, and resiliently contacts the shielding member 35. In FIG. In FIG. 4B, the contact portion 39 of the shielding member 36 is formed in a step-like shape and lightly and elastically abuts against the shielding member 35. In FIG. In addition, in FIG. 4C, a rubber tube is used for the shielding member 36, the diameter of this rubber tube is larger than the gap between the shielding member 35 and the bonnet 8, and the rubber tube comes into contact with the shielding member 35 in a compressed state. are in contact with each other. A cylindrical sponge may be used instead of the rubber tube.

In this way, the shielding members 35 and 36 that shield between the radiator 6 and the bonnet 8 to prevent dust and prevent circulation of hot air are attached to the radiator 6 side and the bonnet 8 side, so that the two come into elastic contact. As a result, even if the bonnet 8 is misaligned or deformed, the intended function can be adequately achieved.

According to the present invention described in detail above, since the air cleaner 7 is disposed above the battery 4 between the engine 2 and the cooling fan 5, the air cleaner 7 is placed here by effectively utilizing the debris space above the battery 4. can be arranged, a special space for installing the air cleaner 7 is not required, and the air cleaner 7 can be stored compactly without getting in the way. Moreover, since the suction port 23 of the air cleaner 7 is located close to the cooling fan 5,
The intake of hot air from the engine 2 is extremely reduced, and normal intake can be achieved without reducing the filling efficiency of the engine 2 or causing knocking due to intake of hot air.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention, in which FIG. 1 is a side view showing the front interior of the tractor, FIG. 4A, B, and C are sectional views corresponding to the line in FIG. 3, respectively, showing three examples of the structure of the contact portion of the shielding member. 2...Engine, 4...Battery, 5...Cooling fan, 6...Radiator, 7...Air cleaner, 8...Bonnet, 22...Intake pipe, 23...
...Suction port.

Claims (1)

[Scope of Claim for Utility Model Registration] In a running vehicle in which a cooling fan 5 for forward air blowing and a radiator 6 are arranged in front of the engine 2, and a battery 4 is placed between the engine 2 and the cooling fan 5 for forward air blowing. An air cleaner for a running vehicle characterized in that an air cleaner 7 is disposed between the engine 2 and the cooling fan 5 above the battery 4, and the suction port 23 of the air cleaner 7 is brought close to the cooling fan 5 substantially face-to-face. Cleaner arrangement structure.