JP2596653Y2 - Construction vehicle cooling system - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling system for a construction vehicle, and more particularly to a cooling system for a bulldozer.

[0002]

2. Description of the Related Art FIG. 2 is a side sectional view of a bulldozer.
A cooling fan 2 is mounted on an engine 11 of the bulldozer 10, and a radiator 1 for cooling engine cooling water is provided in front of the cooling fan 2. A duct 12 is provided on the outer periphery of the radiator 1 and the cooling fan 2.

In a bulldozer, an extrusion-type cooling fan is generally used, and air flows from the rear of the vehicle body to the front of the vehicle body as indicated by an arrow. Particularly in an environment with a lot of dust, the dust that has been wound up by the crawler belt 13 during the traveling is sucked, accelerated by the cooling fan 2 and blown to the radiator 1. There is a problem of causing damage due to.

[0004] As a countermeasure, it is customary to adopt iron fins at the expense of some cooling performance to improve the dust and dust resistance.

When an aftercooler is required to improve engine performance, as shown in FIG. 3, an aftercooler 5 is provided on the discharge side of the push-out type cooling fan 2, and a duct 12 is provided. A radiator 1 is provided downstream.

The aftercooler 5 is made of aluminum in order to secure a cooling capacity. Further, as described above, the aftercooler 5 is first disposed on the discharge side of the cooling fan 2 in order to improve cooling performance by sending cool air to the aftercooler 5 .

[0007]

According to the above arrangement,
Since the aftercooler 5 made of aluminum is disposed on the discharge side of the cooling fan 2, the fins collapse or wear due to the dust in an environment with a lot of dust as described above, and the cooling capacity is reduced or damaged. .

As a countermeasure, as shown in FIG. 4, a radiator 1 is provided on a suction side of a cooling fan 2 driven by a motor 4, a duct 12 is provided, and an aftercooler 5 is provided upstream of the radiator 1. Thus, a method is adopted in which the speed of the dust blown to the aftercooler 5 is reduced to prevent the fins from collapsing or worn.

However, in this method, the cooling fan 2
However, there is a problem that the fan noise easily leaks to the outside, and the noise is loud.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a cooling system for a construction vehicle which has good cooling performance, does not cause the aftercooler fins to collapse or wear, and has low noise. The purpose is.

[0011]

In order to achieve the above object,
The first aspect of the cooling device for a construction vehicle according to the present invention is a soft material.
In a cooling system having a plurality of heat exchangers of high quality and heat exchangers of hard material, heat exchange of soft material from the windward side of the cooling air
Exchanger, cooling fan in the downstream, heat of hard material in the downstream
It is characterized by being arranged in the order of exchangers . Second,
In the first configuration, a heat exchanger made of a soft material is
Aftercooler with Lumi fins, hard material
Heat exchanger is a radiator with iron fins
It is characterized by.

[0012]

According to the above construction , the cooling fan is arranged on the upstream side.
And a heat exchanger made of a soft material
When a vehicle operates in a dusty environment,
Hit the cooling fan and get hit by this cooling fan
Dust is accelerated by the flow of cooling air to the downstream side.
And hit the heat exchanger made of soft material. So soft
The fins of the soft material of the heat exchanger
Damage. Therefore, in the present invention, a plurality of heat exchangers are arranged.
When installing, a heat exchanger made of a soft material
A cooling fan on its downstream side and a hard cooling fan on its downstream side
A heat exchanger made of a material is provided, so that heat
The speed of dust at the inlet of the exchanger is
Less damage due to wear. Some of the dust is soft
Drops on a heat exchanger made of paddle material. Soft material
The remaining dust that has passed through the heat exchanger is
Soft material against the flow even if hit by hit
Heat exchanger made of soft material because it hits the outlet side of the heat exchanger
The vessel is less damaged by wear. Dust hit downstream
Corresponds to the inlet of a heat exchanger made of hard material downstream of
Fins of low quality and low dust
Therefore, the damage due to the wear is small and there is no problem. As above
When multiple heat exchangers are installed in
A lighter, more efficient heat exchanger,
The cooling fan has a heat exchanger made of a soft material and heat exchanged with a hard material.
Fan noise because it is located between the heat exchanger
Can be reduced.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the cooling device for a construction vehicle according to the present invention will be described below with reference to the drawings. FIG. 1 is a layout diagram of a cooling device, in which an aftercooler 5 made of aluminum is provided on a suction side of a cooling fan 2, and a radiator 1 made of iron fins is provided on a discharge side of the cooling fan 2. A duct 3 is provided on the outer periphery of the radiator 1, the cooling fan 2, and the after cooler 5. Reference numeral 4 denotes a hydraulic or electric motor for driving the cooling fan 2.

When the fan 2 is driven by the motor 4, the dust flows into the aftercooler 5, but its speed is low. Therefore, even if the aftercooler 5 is made of aluminum, the fins do not fall or wear due to the dust. . The cooling performance is made of aluminum and is good because it draws in cold air.

The air that has passed through the aftercooler 5 is accelerated by the cooling fan 2 and blown to the radiator 1.
Cool engine cooling water. At this time, the fan noise is blocked by the radiator 1 and hardly leaks to the outside, and the noise is low.

[0016]

As has been described above devised, the present invention is an aluminum aftercooler disposed on the suction side of the cooling fan, due to disposed the radiator iron fins discharge side of the cooling fan, is blown to the aftercooler The speed of the dust is reduced, the fins do not collapse or wear even in a dusty environment, and the noise of the cooling fan does not leak directly to the outside. Accordingly, a low noise construction vehicle cooling device having good cooling performance and excellent dust resistance can be obtained.

[Brief description of the drawings]

FIG. 1 is a layout view of the cooling device of the present invention.

FIG. 2 is an explanatory diagram of a bulldozer cooling method.

FIG. 3 is a layout view of a conventional cooling device.

FIG. 4 is a layout diagram of a conventional cooling device for preventing dust and dust.

[Explanation of Signs] 1 : radiator, 2: cooling fan, 3: duct, 4: module
Data, 5: Aftercooler

Claims (2)

(57) [Scope of request for utility model registration] 1. A heat exchanger made of a soft material and a heat exchanger made of a hard material
In the cooling apparatus having a plurality of the exchanger, upwind cooling air
Heat exchanger made of soft material from the side, cooling
A cooling device for a construction vehicle, wherein a heat exchanger made of a hard material is arranged in the order of the heat exchanger . 2. A heat exchanger made of a soft material is made of an aluminum filter.
Heat exchanger with a hard material
Is a radiator having iron fins.
The cooling device for a construction vehicle according to claim 1.