JP2009096416A - Cooling system of working vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling system of a working vehicle, capable of offering a sufficient cooling effect while maintaining a dust prevention effect. <P>SOLUTION: The cooling system of the working vehicle is provided, inside an engine compartment 11 thereof, with a radiator 13 for introducing air from the front face and a dust protector 14 for radiator protection from dust, disposed in front of the radiator 13, wherein the dust protector 14 is formed in an angular shape extending forward and upward with a number of vent holes 14a drilled therein to be able to introduce air from the front and lower parts thereof. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cooling device for a work vehicle.

A cooling device for a work vehicle shown in Patent Document 1 that includes a radiator that takes air into the engine room from the front and a dust-proof tool for radiator dust arranged in front of the radiator is known.
Japanese Utility Model Publication No. 56-13511

The work vehicle cooling device of the above document has a structure that takes in air only from the front of the dust proofing tool, so that depending on the situation, the amount of air taken in may be insufficient and the cooling effect may not be sufficiently obtained. There are challenges. On the other hand, if the air vent of the dustproof tool is formed large in order to increase the amount of air taken in, there is a problem that the dustproof effect is lowered.
An object of the present invention is to solve the above-mentioned problems and to provide a work vehicle cooling device capable of obtaining a sufficient cooling effect while maintaining a dustproof effect.

  In order to solve the above problems, a work vehicle cooling apparatus according to the present invention firstly includes a radiator 13 for taking air into the engine room 11 from the front surface, and a dust-proofing tool 14 for preventing dust from being disposed in front of the radiator 13. In the cooling device for a work vehicle, the dustproof tool 14 is formed in an angle shape extending forward and upward, and a large number of air holes 14a are formed so that air can be taken in from the front and the lower side of the dustproof tool. It is characterized by.

  Secondly, the dustproof tool 14 is disposed away from the radiator 13 so that a space S in which an operator can perform cleaning work is formed between the dustproof tool 14 and the radiator 13.

  According to the cooling device for a work vehicle of the present invention configured as described above, air can be taken in from the front and the lower side of the dustproof device, so that the cooling efficiency of the radiator is improved without reducing the dustproof function. Can do.

  In addition, since a space in which an operator can perform cleaning work is formed between the dustproof tool and the radiator, the dustproof tool and the radiator can be cleaned without removing the dustproof tool, which is highly convenient.

Embodiments of the present invention will be described below based on the illustrated example.
FIG. 1 is an overall perspective view of a tractor to which a cooling device for a work vehicle according to the present invention is applied. The tractor includes a traveling machine body 3 having front and rear wheels 1 and 2 and a work machine (not shown) such as a rotary tiller that is connected to the rear of the traveling machine body 3 so as to be movable up and down.

  A cabin 6 on which an operator enters is erected on the rear half of the traveling machine body 3 on the chassis frame 4. In front of the cabin 6, an engine room 11 (see FIG. 2) including side covers 7 and 7 that are left and right side walls, a front grill 8 that is a front wall, and a bonnet 9 that covers the upper side is disposed. ing.

  The bonnet 9 is configured to be rotatable up and down with the rear end as a rotation fulcrum, thereby opening the upper part of the engine room 11 and performing internal maintenance. In addition, the left and right side covers 7, 7, the front grille 8 and the bonnet 9 are brought into close contact with each other so that no gap is formed therebetween, so that dust such as dust does not enter the engine room 11 from the outside. .

  2 and 3 are a side view and a rear view in the engine room 11, respectively. An engine 12 is disposed at a rear portion in the engine room 11 in a state of being firmly fixed to the chassis frame 4. In addition, a radiator 13 which is an engine cooling device is disposed in front of the engine 12 in the engine room 11, and a dustproof tool 14 for radiator dust is disposed in front of the radiator 13 in the engine room 11. Then, the front end portion of the bonnet 9 and the front grill 8 are located in front of the dustproof tool 14.

  The radiator 13 includes an upper tank 16 into which a coolant such as cooling water whose temperature has been increased by cooling the inside of the engine 12 is sent, a radiator core 17 that transfers the coolant from the upper tank 16 while cooling, and a radiator. A main body having a substantially rectangular parallelepiped shape extending in the left and right and up and down directions is constituted by the lower tank 18 into which the cooled refrigerant from the core is fed. The radiator 13 is fixed to the chassis frame 4 via a generally inverted U-shaped radiator frame 19 surrounding both side surfaces and the upper surface of the main body.

  The radiator core 17 is configured to be efficiently cooled by air blown from the front side to the back side in the process in which the refrigerant is transferred from the upper part to the lower part of the radiator core 17. On the back side of the radiator core 17, a cooling fan 22 whose peripheral surface is surrounded by a fan shroud 21 and a partition wall 23 that separates a space in front of the radiator 13 and a space in the rear are provided. The air can be efficiently introduced from the front side of 17.

  Further, the upper end portion and the left and right side end portions of the partition wall 23 are covered with a belt-like weather wrap 24 having a substantially inverted U shape when viewed from the front, and the weather wrap 24 is closed to the inner surfaces of the left and right side covers 7 and 7. The bonnet 9 is closely attached to the inner surface of the bonnet 9 so that a gap is not easily formed therebetween. Also by this, it is the structure which can flow in air efficiently from the radiator core 17 front side.

  Note that the refrigerant in the engine 12 is transferred to the upper tank 16 via the input pipe 26. On the other hand, the cooled refrigerant in the lower tank 18 is returned to the engine 12 through the output pipe 27.

  The dust-proof tool 14 is obtained by bending and forming a punching plate which is a rectangular metal plate-like member having a large number of air holes 14a having a diameter that does not allow dust to pass therethrough. It is a letter-shaped angle-shaped member. Among the bent portions, one side is a substantially horizontal floor portion 28, and the other side is a standing portion 29 that stands vertically from the rear end portion of the floor portion 28. In addition, you may comprise the said dust prevention tool 14 with a dust net etc. instead of a punching metal.

  The floor portion 28 is firmly fixed to the chassis frame 4 with bolts or the like. Then, air can flow into the engine room 11 from below the floor portion 28 through the vent holes 14 a of the floor portion 28.

  The upper end portion and the left and right side end portions of the standing portion 29 are covered with a belt-like weather wrap 31 having a reverse U-shape when viewed from the front, and the weather wrap 31 is closed to the left and right side covers 7 and 7 and the bonnet in a closed state. 9 is closely attached to the inner surface, so that it is difficult for gaps to occur between the left and right side covers 7 and the dustproof tool 14 and between the bonnet 9 and the dustproof tool 14. This prevents dust from entering the front side of the radiator 13 and improves the dustproof effect.

  Further, the dustproof tool 14 is arranged away from the radiator 13 so that a space S in which an operator can perform cleaning work is formed between the standing portion 29 and the radiator 13. This facilitates maintenance such as cleaning performed between the radiator 13 and the dustproof tool 14.

  A fixing plate 32 (fixing tool) is provided between the radiator 13 and the dustproof tool 14 so as to surround the space S. The fixed plate 32 has a rear end attached to the front side of the radiator frame 19, and a front end attached to the back side of the standing portion 29. Thus, the upright portion 29 is firmly fixed to the radiator 13.

  The front grill 8 is provided with a front grill dustproof tool 33, and air flows into the engine room 11 through a vent hole 33 a drilled in the front grill dustproof tool 33. Note that the front grill dustproof tool 33 may be a punching metal or a net. The front grille 8 is fixed on the chassis frame 4 with pins or the like, but can be removed for maintenance or the like.

  The bonnet 9 is provided with a bonnet dustproof tool 34, and air flows into the engine room 11 through a vent hole 34 a formed in the front grill dustproof tool 34. The bonnet dustproof tool 33 may be a punching metal or a net.

  As described above, the air from the front side of the traveling machine body 3 passes through the front grill dustproof tool 33 or the bonnet dustproof tool 34, then passes through the standing portion 29 of the dustproof tool 14, and is sent to the radiator 13. On the other hand, the air from the lower side of the traveling machine body 3 passes through the floor portion 28 of the dustproof tool 14, then passes through the standing portion 29 and is sent to the radiator 13. That is, the external air is sent to the radiator 13 through the double filter.

1 is an overall perspective view of a tractor to which a work vehicle cooling device of the present invention is applied. 3 is a side view inside the engine room 11. FIG. FIG. 3 is a rear view inside the engine room 11.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Engine room 13 Radiator 14 Dustproof tool 14a Ventilation hole 14
S space

Claims (2)

  In a cooling device for a work vehicle, which includes a radiator (13) for taking air from the front into an engine room (11), and a dust-proof tool (14) for preventing dust from being disposed in front of the radiator (13). A cooling device for a work vehicle, in which a dustproof tool (14) is formed in an angle extending forward and upward, and a large number of air holes (14a) are provided so that air can be taken in from the front and the lower side of the dustproof tool.   The dust-proof tool (14) is arranged spaced apart from the radiator (13) so that a space (S) in which an operator can perform cleaning work is formed between the dust-proof tool (14) and the radiator (13). 1 is a cooling device for a work vehicle.

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