JPS599930Y2 - Construction vehicle cooling system - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a cooling device for a construction vehicle.

In a conventional cooling device of this kind, as shown in FIG. 1, the radiator a was attached to a radiator guard b, and the cooling fan C was a radiator mount.

Moreover, the cooling fan C used was an extrusion fan.

Therefore, when removing the engine d, it was necessary to remove the radiator guard b, the radiator a, and the cooling fan C, and it was also troublesome to replace the fan bell le.

In addition, since the cooling fan C is an extrusion fan, in dusty areas it is necessary to install a rectifier grid f between the cooling fan C and the radiator a, which is troublesome to install and remove, and because the extrusion fan causes uneven air velocity distribution. As a result, the cooling effect was reduced.

In addition, since the cooling fan C was mounted on a radiator, after the guard was installed, the driven pulley IJh needed to be adjusted with a shim between it and the drive pulley i.

Furthermore, since the cooling fan C is mounted on a radiator, when it is fully floated with the engine d, there is a risk that it will be misaligned with the engine side drive pulley i, resulting in a shortened belt life.

The present invention was developed in view of the above circumstances, and its purpose is to eliminate the need to remove the guard when installing or removing the engine or replacing the fan belt, which not only makes installation and replacement easier, but also eliminates the need for a rectifying grid. To provide a cooling device for a construction vehicle that can improve cooling efficiency, eliminate the need for pulley adjustment after mounting a guard on the vehicle, and extend the life of a fan belt.

Hereinafter, the present invention will be explained with reference to FIG. 2 and subsequent figures.

In the drawings, 1 is a rear guard, and 2 is a front guard.

The rear guard 1 is fixed to the main frame 3.

An oil cooler 4 and a radiator 5 are provided inside the rear guard 1, and both the oil cooler 4 and the radiator 5 have vertical bow portions 8 and 9 in the center of their respective core portions 6 and 7. .

A bearing 1 is installed inside the front guard 2 via a rod-shaped support member 10.
1 and 12 are provided, and a cooling fan 1 is mounted on the central bearing 11.
A shaft portion 14 of No. 3 is rotatably provided, and a driven pulley 15 is fixed to this shaft portion 14.

A shaft 16 is rotatably provided on the lower bearing 12, and a drive pulley 17 is attached to this shaft 16.

A fan belt 18 is placed over the drive pulley 17 and the driven pulley 15, and these pulley belt mechanisms A
is in charge.

The side part of the front guard 2 is connected to the rear guard 1 via a hinge 19.
The front guard 2 can be opened and closed around a hinge 19.

A universal joint 20 is connected to the shaft 16, and a spline portion 23 is formed at the rear end of the universal joint 20.

This universal joint 20 is connected to the oil cooler 4.
, the spline portion 23 of the radiator 5 passes through the hole-shaped portions 8 and 9 of the radiator 5, and the spline portion 23 thereof is connected to the output shaft side 2 of the engine 21.
It engages with the spline portion 24 of No. 2.

The cooling fan 13 is a suction fan.

Thus, by driving the engine 21, the output shaft universal join} 20, drive pulley 17, fan belt 1
8. The cooling fan 13 is driven via the driven pulley 15, and air is emitted in the direction of the arrow.

When replacing the fan belt 18 or attaching or detaching the engine 21, the front guard 2 is opened forward about the hinge 19.

In this case, when the front guard 2 is opened, the spline portion 23 of the universal joint 20 comes out from the spline portion 24 on the output shaft side 22.

The present invention has been described in detail above, and the guard is divided into the front guard 2 and the rear guard 1, the rear guard 1 is fixed to the main frame, the front guard 2 is attached to the rear guard 1 in an openable/closable manner, and the rear guard 2 is attached to the rear guard 1 in an openable/closable manner. An oil cooler 4 and a radiator 5 are provided on the guard 1, and bow portions 8 and 9 are provided on the core portions of the oil cooler 4 and radiator 5, respectively, and a suction type cooling fan 13 is provided on the front guard 2 via a support member. A pulley belt mechanism A for driving the cooling fan 13 is provided on the front guard 2, a universal joint 20 is connected to the input side of the pulley belt mechanism A, and a spline portion is provided at the end of the universal joint 20. Since the universal joint 20 is passed through the thank-you parts 8 and 9 of the oil cooler 4 and radiator 5, and the spline part is connected to the spline part on the engine output shaft side, the engine can be attached and detached only by attaching and detaching the universal joint. There is no need to attach or remove the guard.

Furthermore, the fan belt can be replaced by opening the front guard 2, making the replacement easy.

Not only does the fan not require the installation of a rectifying grid for suction, the air velocity distribution is uniform, which can improve cooling efficiency.

Furthermore, since the fan and pulley belt mechanism are integrated inside the front guard, there is no need to adjust the pulley after the guard is mounted on the vehicle, and the fan belt does not swing even when the engine is fully floated, extending the life of the fan belt. Can be done.

[Brief explanation of the drawing]

Fig. 1 is a side view of a conventional cooling system for construction vehicles, Fig. 2 is a front view of an embodiment of the present invention, Fig. 3 is a longitudinal sectional view of the same, Fig. 4 is a plan view of the same, and Fig. 5 is an oil FIG. 2 is a perspective view for explaining the relationship between the cooler/radiator and the universal joint. 1 is the rear guard, 2 is the front guard, 4 is the oil cooler,
5 is a radiator, 8 and 9 are holes, 13 is a cooling fan,
20 is a universal joint, A is a pulley belt mechanism.

Claims (1)

[Scope of utility model registration request] The guard is divided into a front guard 2 and a rear guard 1, the rear guard 1 is fixed to the main frame, the front guard 2 is attached to the rear guard recess so that it can be opened and closed, and an oil cooler 4 and a radiator 5 are attached to the rear guard 1. At the same time, a thank-you letter 8 is attached to the core portion of each of the oil cooler 4 and radiator 5.
, 9, the front guard 2 supports a suction type cooling fan 13 via a support member, the front guard 2 is provided with a pulley belt mechanism A for driving the cooling fan 13, A universal joint 20 is connected to the side, a spline portion is provided at the end of the universal joint 20, and the universal joint 20 is connected to the oil cooler 4.
A cooling device for a construction vehicle, characterized in that the spline portion is connected to the spline portion on the engine output shaft side by penetrating the bow portions 8 and 9 of the radiator 5.