JP4269146B2 - Work vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a work vehicle for agriculture, construction, transportation, or the like provided with a traveling device, and particularly relates to a configuration of a fuel tank mounting portion.
[0002]
[Prior art]
As the work vehicle, an agricultural tractor (hereinafter referred to as a tractor) will be described as an example.
The tractor has a driving mechanism including a pair of front and rear wheels, an engine that is a driving source of the wheels, a transmission that shifts the engine driving force, and the like on the vehicle body, and a cockpit that includes a handle on the vehicle body. A working machine such as a rotary tiller can be connected to the rear part of the vehicle body.
[0003]
Conventional tractors have a configuration in which a fuel tank is arranged in the front part of the vehicle body, but there are many cases in which an engine is mounted in the front part of the vehicle body. However, the fuel tank is arranged near the muffler.
[0004]
[Patent Document 1]
Utility Model Registration Publication No. 259853 Publication [0005]
[Patent Document 2]
Japanese Patent Laid-Open No. 2001-219751 [0006]
[Problems to be solved by the invention]
However, in the conventional tractor, if the fuel tank is arranged avoiding the muffler, the space for the fuel tank is reduced. Therefore, in a large horsepower tractor, the capacity of the fuel tank becomes insufficient, and it is necessary to provide an auxiliary fuel tank to avoid this.
[0007]
Accordingly, an object of the present invention is to dispose a fuel tank at a front portion of a vehicle body with a relatively large capacity and avoiding a muffler.
[0008]
[Means for Solving the Problems]
The present invention is one in a work vehicle of arranging the engine (2) and a fuel tank (9) and the engine exhaust muffler (7) in the steering Tateseki front of the vehicle body on the bonnet (1), a fuel tank (9) part of the concave portion is provided to, to position the rear portion of the muffler (7) to the recess, further Hekomase the upper portion of the panel provided in the cockpit dash (10) towards the rear, a fuel tank (9 the recess ) Is housed, and the bottom surface of the fuel tank (9) forms a bent portion from the center to the front and upward, and the support stay (12) is brought into contact with the bent portion so that the fuel tank (9 ) Is supported by a hood stay (17), which is a bonnet opening / closing fulcrum frame provided on the vehicle body, is passed forward from the side of the fuel tank (9), and the base is supported by a panel dash (10) provided in the cockpit. Fixed fixing rod (14 ), The fuel tank (9) is attracted and fixed to the panel dash (10) side, and a heat shield plate (16) is provided in front and below the fuel tank (9), and the heat shield plate (16) is attached to the food stay. It is the work vehicle fixed to (17) .
[0009]
According to the present invention, a recess is provided in a part (front left) of the fuel tank 9, the rear end portion of the muffler 7 is positioned in the recess, and further, in the recess behind the upper end portion of the panel dash (wall) 10. By storing the rear end portion of the fuel tank 9, a large capacity of the fuel tank 9 can be secured even with a large horsepower tractor . Further, the bottom surface of the fuel tank 9 is formed as a bulging portion that bulges upward from the center toward the upper front. The support stay 12 is contacted to support the fuel tank 9 on the airframe side, and a heat shield plate 16 is provided in front of and below the fuel tank 9 so that heat radiation from the engine does not reach the fuel tank 9. .
[0012]
【The invention's effect】
According to the present invention, a recess for storing a muffler is provided in a part of the fuel tank 9 (front left), and the rear end of the fuel tank 9 is stored in a rear recess of the panel dash (wall) 10. Without providing an auxiliary tank, a relatively large-capacity fuel tank can be obtained, and not only can the equipment cost be reduced, but also the heat shield plate 16 prevents the heat radiation from the engine from hitting the fuel tank 9 and supports it. The stay 12 can prevent the fuel tank 9 from vibrating.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described below with respect to an agricultural tractor (hereinafter referred to as a tractor) which is an example of a work vehicle. In the following description of the illustrated example, when referring to the front or rear, the side on which the steering handle is disposed is the rear, and the opposite side, that is, the side on which the engine 2 is disposed is the front. When the term “right” or “left” is used, the right hand side is referred to as the right and the left hand side is referred to as the left when viewed from an operator standing at the front of the body at the rear of the body.
[0015]
1 is a side view of the main part in the bonnet 1 at the front part of the tractor body, FIG. 2 is a plan view of the main part in the bonnet 1 at the front part of the tractor body, and FIG. 3 is a fuel tank installation part in FIG. FIG.
[0016]
An engine 2 is placed inside the bonnet 1 at the front of the tractor body, and power is transmitted from the engine 2 to a clutch housing, a transmission case, and the like (not shown). A blower fan 3 and a radiator 5 are disposed on the front side surface of the engine 2 inside the bonnet 1. A battery 6 is often disposed in front of the radiator 5 or the like. The muffler 7 is disposed in the vicinity of the engine 2.
[0017]
In the present embodiment, the fuel tank 9 adopts a configuration in which the fuel tank 9 is disposed in the rear of the bonnet 1. Furthermore, the upper end portion of the panel dash (wall) 10 is recessed rearward, and the rear end portion of the fuel tank 9 is accommodated in the recess, so that the capacity of the large fuel tank 9 can be increased even with a large horsepower tractor. I was able to secure it. Thus, no auxiliary tank is provided, and the equipment cost can be reduced.
[0018]
Further, the fuel tank 9 is positioned in the concave portion of the panel dash 10 by a boss 9 a around the fuel outlet provided on the bottom surface of the fuel tank 9. Further, the bottom surface of the fuel tank 9 is configured to urge upward from the center toward the upper side, and a support stay 12 is brought into contact with the protruding portion to support the fuel tank 9 on the body side. At this time, if the elastic body 13 such as a sponge shown in FIG. 4 is arranged on the upper surface of the support stay 12 and the elastic body 13 is pressed on the bottom surface side of the protruding portion of the fuel tank 9, the fuel tank 9 The vibration of can be suppressed.
[0019]
Further, the fuel tank 9 is attracted and fixed to the panel dash 10 side by a fixing rod 14 so as not to fall forward. In this way, the fuel tank 9 is supported by the concave portion of the panel dash 10 and the support stay 12 and fixed by the fixing rod 14. Further, a heat shield plate 16 for blocking hot air in the engine room is provided in front and below the fuel tank 9, and the heat shield plate 16 is attached to a hood stay (bonnet opening / closing fulcrum frame) 17 via a mounting plate 18. It is stuck.
[0020]
Conventionally, the heat shield plate 16 together with the fuel tank 9 is fixed together on the cockpit floor side or the bonnet 1 side. However, with the configuration shown in FIGS. 1 to 3, the fuel tank 9 is disposed on the cockpit floor side and the heat shield plate 16 is disposed on the hood stay 17 side. Can be placed.
[0021]
Further, as shown in the side view of the main part of FIG. 5, the small tractor is applied by eliminating the convex portion of the fuel tank 9 ′ in front of the fuel tank 9 shown in FIG.
[0022]
The embodiment shown in FIG. 6 is a left side view of the main part of the bonnet 1 and fuel tank 9 arrangement portion, and FIG. 7 is a plan view thereof (with the cover 24 removed). A mounting hole of the holder member 21 provided in the bracket member 19 is configured such that a rotating fulcrum (horizontal axis) 20 is placed on the bracket member 19 welded to the upper surface, and the rotating fulcrum 20 is pressed and fixed by the holder member 21. 21a is a long hole, and the bonnet 1 can be adjusted in the front-rear direction using the mounting hole 21a.
[0023]
In this way, the attachment position of the bonnet 1 can be easily adjusted, and the appearance quality is stabilized. Further, a vibration isolating structure can be obtained by inserting a buffer member 22 between the bracket member 19 and the holder member 21 and the rotation fulcrum 20.
[0024]
An oil receiving cover 24 having an oil receiving groove 24a is provided around the oil filling port 9b of the fuel tank.
[Brief description of the drawings]
FIG. 1 is a side view of a main part in a bonnet of a front portion of a tractor body according to an embodiment of the present invention.
FIG. 2 is a plan view of the main part in the bonnet of the front part of the body of the tractor of FIG.
FIG. 3 is an enlarged side view of a fuel tank installation part of the tractor of FIG.
4 is a perspective view of a support stay portion of the fuel tank of FIG. 2. FIG.
FIG. 5 is an enlarged side view of a fuel tank installation part of the tractor of FIG. 1;
FIG. 6 is a left side view of the main part of the bonnet and fuel tank arrangement portion according to the embodiment of the present invention.
7 is a plan view of a main part of the fuel tank arrangement portion of FIG. 6;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bonnet 2 Engine 3 Blower fan 5 Radiator 6 Battery 7 Muffler 9 Fuel tank 9a Boss 9b Oil inlet 10 Panel dash (wall)
12 support stay 13 elastic body 14 fixing rod 16 heat shield plate 17 hood stay 18 mounting plate 19 bracket member 20 rotation fulcrum 21 holder member 21a mounting hole 22 buffer member 24 cover 24a oil receiving groove

Claims (1)

In a work vehicle in which an engine ( 2 ) , a fuel tank ( 9 ), and an engine exhaust muffler ( 7 ) are arranged in a bonnet ( 1 ) on a traveling vehicle body in front of a cockpit,
A recess is formed in a part of the fuel tank ( 9 ) , the rear end of the muffler ( 7 ) is positioned in the recess, and the upper end of the panel dash ( 10 ) provided in the cockpit is recessed backwards, The rear end of the fuel tank ( 9 ) is stored in the recess ,
The bottom surface of the fuel tank (9) forms a bent portion from the center toward the upper front, and a hood opening and closing the fuel tank (9) on the vehicle body by contacting the bent portion with a support stay (12) Support the food stay (17), which is the fulcrum frame,
The fuel tank (9) is moved forward from the side of the fuel tank (9), and the fuel tank (9) is moved to the panel dash (10) side by a fixing rod (14) whose base is supported by the panel dash (10) provided in the cockpit. Attract and fix,
A work vehicle characterized in that a heat shield (16) is provided in front and below the fuel tank (9), and the heat shield (16) is fixed to the hood stay (17) .

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