JPS643775Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a radiator fan drive device in which the drive shaft of the radiator fan is divided into parts.

Conventionally, in a vehicle such as an agricultural tractor, a radiator fan is provided near the front of the engine, a radiator main body is provided in the direction of the radiator fan, and a battery is further provided in front of the radiator main body. however,
According to this configuration, there is a problem in that the high-temperature exhaust air discharged from the radiator affects the battery, raising the temperature of the battery and shortening the life of the battery. Therefore, by arranging the battery between the engine and the radiator fan, there is no risk that the high-temperature exhaust air generated by the radiator fan and discharged through the radiator body will directly hit the battery. Although battery protection can be achieved,
The drive shaft of the radiator fan that protrudes from the engine side must be configured to be long, and therefore, it is necessary to rotatably support the drive shaft on the radiator fan side as well. Therefore, when replacing the fan belt that transmits power to the drive shaft, it is necessary to remove the radiator fan support portion and the drive shaft, making the replacement work time-consuming and troublesome.

Therefore, in view of the above problems, the present invention aims to protect the battery while also making it easier to replace the fan belt.The main features of this invention are the engine, the battery located in front of the engine, and the battery. A vehicle equipped with a radiator fan rotatably supported at the front and rotatably driven via a drive shaft rotationally driven by an engine, and a radiator body disposed in front of the radiator fan, wherein the drive shaft is rotatably driven. It is divided into a drive shaft rotatably supported by the engine and a fan shaft fixed to the radiator fan, and a gap is provided between the opposing surfaces of the interlocking shaft and the fan shaft for passage of the fan belt. A spline, in which corresponding splines are formed on the outer circumferential surfaces of both opposing ends of the interlocking shaft and the fan shaft, can be accommodated in one spline side, and is spline-fitted across both splines by sliding in the axial direction. A cylindrical coupling ring having an inner peripheral surface thereof is fitted over both splines, and a fixing member for preventing axial movement is inserted and removably fixed to the coupling ring between the opposing surfaces.

Hereinafter, embodiments of the present invention will be described based on the drawings. In FIGS. 1 and 2, reference numeral 1 is an agricultural tractor as an example of a vehicle, and an engine 2 is mounted on the front part of the tractor. A front axle frame 3 projects from the vehicle, a bumper 4 is installed on the front end of the frame 3, and a pair of left and right front wheels 6 are attached to the lower surface of the frame 3 via a front axle 5.

Further, a radiator fan 7 is arranged at an appropriate distance in front of the engine 2, and a fan shaft 8 fixed to the fan 7 is shaped to protrude rearward.
is rotatably supported. The support frame 9 is removably fixed to the front axle frame 3, and is attached to the front axle frame 3 by bolts. As the nut tightens and loosens, it moves up and down.
Left and right. It is said to be adjustable forward and backward. Reference numeral 10 denotes an interlocking shaft, which has the same rotation axis as the fan shaft 8 and is rotatably supported on the upper part of the engine 2. The interlocking shaft 10 and the fan shaft 8 are configured to have an appropriate gap between their opposing end surfaces to allow the fan belt 11 to pass through, and each end of the interlocking shaft 10 and the fan shaft 8 on the opposing side Splines 12 and 13 are formed on the outer circumferential surface of each portion, respectively. Reference numeral 14 denotes a cylindrical coupling ring, on the inner peripheral surface of which both splines 1 are provided.
A spline 15 is formed on the splines 2 and 13 so as to be slidable in the axial direction, and is externally fitted over the splines 12 and 13 at both ends.
Between opposing surfaces of the interlocking shaft 10 and the fan shaft 8, a roll pin 16 serving as a fixing member for preventing axial movement is inserted and removably fixed to the coupling ring 14, thereby preventing axial movement. By removing the roll pin 16, the roll pin 16 can be slid in the direction of the fan shaft 8 or the interlocking shaft 10, and as shown by the imaginary line in FIG. Both ends of the fan shaft 8 and the interlocking shaft 10 are interlocked and connected so that they can be freely disconnected. And fan shaft 8
and the interlocking shaft 10 constitute a drive shaft 17 that rotationally drives the radiator fan 7. 18 is a crankshaft protruding from the bottom of the engine 2;
A pulley 19 fixed to the shaft 8 and the interlocking shaft 10
The pulley 20 fixed to the fan belt 1
They are linked together via 1.

The radiator body 2 is located in front of the radiator fan 7.
1 is adjacent to the engine 2, and the radiator body 21 is adjacent to the engine 2.
It is connected to the front axle frame 3 by tubes 22 and 23, and is supported on the front axle frame 3 via a bracket 24.

The battery 25 is disposed between the engine 2 and the radiator fan 7, and is detachably supported on the front axle frame 3 via a support stand 26. still,
The battery 25 is provided biased toward one side of the vehicle body of the tractor 1, and is arranged so that the liquid level can be seen from the outside.

A bonnet 27 covers the engine 2, the radiator fan 7, the radiator body 21, the battery 25, etc. from above and both sides.The upper plate 28 and both side plates 29 of the bonnet 27 can be opened and closed independently, and can be attached and detached. The liquid level of the battery 25 can be visually checked by opening/closing or removing the side plate 29.

Furthermore, the front opening of the bonnet 27 has a grille 30.
A pair of left and right head lamps 31 are attached to the upper part of the grill 30. Reference numeral 32 denotes an opening/closing tool provided at the front part of the upper plate 28, and the upper plate 28 can be opened and closed by disengaging the opening/closing tool 32.

Reference numeral 33 denotes an air cleaner, which is attached to one side of the upper part of the engine 2 via an air cleaner mounting base 34, as shown in FIG. The air cleaner mounting base 34 includes a mounting part 35 on which the air cleaner 33 is mounted, and a mounting part 36 that extends inward from the mounting part 35 and is bolted to the engine 2.
It includes a holding part 37 that supports the inside of the lower part of the outer peripheral surface of the air cleaner 33 in a holding manner, and a locking part 38 provided at the upper end of the holding part 37, and a locking part 38 extending outwardly and downwardly from the mounting part 35. The rubber band 4 is locked across the locking portion 41 provided on the extended side portion 39 provided.
1, the air cleaner 33 is detachably attached to the air cleaner mounting base 34.

The embodiment of the present invention is constructed as described above, and the high-temperature exhaust air that is blown up by the radiator fan 7 and discharged through the radiator main body 21 does not directly impact the battery 25. ,
The temperature of the battery 25 is prevented from increasing due to high-temperature exhaust air, thereby protecting the battery 25 and achieving a longer service life. Further, a large gap is formed between the engine 2 and the radiator fan 7, and air flows smoothly in this gap, thereby improving the cooling performance of each device. Furthermore, when replacing the fan belt 11, after removing the roll pin 16, slide the coupling ring 14 along the spline 13 of the fan shaft 8, as shown by the imaginary line in FIG. The end surfaces facing the interlocking shaft 10 may be opened, and the fan belt 11 may be inserted and removed through the gap. After that, the coupling ring 14 is connected to the original state, and the roll pin 1
6. The position can be fixed by inserting and attaching. As described above, the replacement work of the fan belt 11 is simplified and can be easily performed without much effort. Further, even if there is slight misalignment between the axes of the fan shaft 8 and the interlocking shaft 10, the adjustment can be easily made using the support frame 9.

Furthermore, in the configuration of the air cleaner 33 mounting part, conventionally, as shown in FIG.
and a mounting portion 45 that is attached to the mounting portion 44.
A fixing rod 46 bent into a substantially U-shape on both sides of the upper end
The air cleaner 43 was fixed to the air cleaner mounting base 42 through screwing. Therefore,
When removing the air cleaner 43, use the fixing rod 4
It was necessary to remove each nut 47 screwed into the nut 6, which was time-consuming. Furthermore, since the mounting portion 44 is configured in a bay shape, as shown by the imaginary line,
Once lifted upward, it must be taken out to the side, and the upper plate 28 of the bonnet 27 must be placed at a higher location, resulting in the disadvantage that the bonnet 27 becomes bulky. However, in this embodiment, as shown in FIG. 3, the outer side of the air cleaner mounting base 34 is configured to extend downward. As shown by the imaginary lines, the air cleaner 33 can be taken out to the side, making installation and removal operations easy, and the bonnet 27 can also be made more compact.

According to the present invention, since the battery is arranged between the engine and the radiator fan, it is possible to prevent the battery from becoming hot, protect the battery, improve durability, and drive the radiator fan. The shaft is divided into an interlocking shaft and a fan shaft, and a gap is provided between opposing surfaces of the interlocking shaft and the fan shaft for passage of the fan belt,
Corresponding splines are formed on the outer circumferential surfaces of both opposing ends of the interlocking shaft and the fan shaft, and the spline can be freely accommodated on one spline side and is spline-fitted across both splines by sliding in the axial direction. A cylindrical coupling ring provided on the circumferential surface is fitted over both splines, and a fixing member for preventing axial movement is removably fixed to the coupling ring between the opposing surfaces in a penetrating shape. The fan belt can be easily replaced by attaching and detaching the fixing member fixed to the fan belt and sliding the coupling ring in the axial direction, which has the advantage of simplifying the replacement work.
Furthermore, it has a simple configuration in which a coupling ring is attached to both splines of the interlocking shaft and the fan shaft, and can be easily manufactured.

[Brief explanation of drawings]

Fig. 1 is a front side view of a tractor equipped with an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the same main part, Fig. 3 is a sectional view taken along the line shown in Fig. 1, and Fig. 4 is a conventional air It is an explanatory view of a cleaner attachment part. DESCRIPTION OF SYMBOLS 1... Tractor, 2... Engine, 7... Radiator fan, 8... Fan shaft, 10... Interlocking shaft, 14... Coupling, 17... Drive shaft, 2
1...Radiator body, 25...Battery.

Claims (1)

[Scope of utility model registration request] An engine 2, a battery 25 disposed in front of the engine 2, and a radiator fan 7 rotatably supported in front of the battery 25 and rotatably driven via a drive shaft 17 rotationally driven by the engine 2; In a vehicle 1 equipped with a radiator body 21 disposed in front of a radiator fan 7, the drive shaft 17 is connected to an interlocking shaft 10 rotatably supported by the engine 2 and a fan shaft 8 fixed to the radiator fan 7. The interlocking shaft 10 and the fan shaft 8 are separated, and are arranged with a gap for passage of the fan belt 11 between the opposing surfaces, and on the outer circumferential surfaces of the opposing ends of the interlocking shaft 10 and the fan shaft 8, respectively. Corresponding splines 12, 13 are formed,
A cylindrical coupling 14 is provided with a spline 15 on its inner peripheral surface that can be freely accommodated on one spline 13 side and is spline-fitted across both splines 12 and 13 by sliding in the axial direction.
13, and a fixing member 16 for preventing axial movement is inserted and removably fixed to the coupling 14 between the opposing surfaces.