JP7326142B2 - work vehicle - Google Patents

Description

The present invention relates to work vehicles such as tractors.

A work vehicle is known that includes an engine, a fuel tank arranged adjacent to the engine, and a tank support frame that supports the fuel tank (see, for example, Patent Document 1).

JP 2011-152889 A

However, when the fuel tank is placed next to the engine, it is difficult to secure sufficient fuel tank capacity due to space restrictions in the engine room. There was a risk that it would flow to the engine side.

The present invention was created with the aim of solving these problems in view of the actual situation as described above . A work vehicle comprising: a fuel tank arranged adjacent to the rear of the engine; and a tank support frame supporting the fuel tank, wherein the fuel tank includes a tank main body portion adjacent to the engine; The tank support frame includes an overhang portion projecting above the engine from the tank main body portion to expand the tank capacity, and a fuel filler port provided at the top of the overhang portion, and the tank support frame is provided between the engine and the fuel tank. A heat shield plate that partitions the space is supported, and the heat shield plate includes a heat shield plate body portion that partitions the tank body portion and the engine, and a cover portion that covers the side and bottom of the overhang portion , The bottom surface of the cover portion slopes downward from the engine toward the fuel tank , and the tank support frame includes a tank mounting table on which a bottom plate of the tank main body is mounted, and a tank. A bottom plate base is provided below the tank mounting base with a gap therebetween, and the front end of the bottom plate base is positioned at the front end portion of the bottom surface of the tank main body with a gap from the tank main body. It is characterized in that it is bent so that the front is high and the rear is low .
The invention of claim 2 is the work vehicle according to claim 1, characterized in that the tank support frame is opened below.
The invention of claim 3 is the work vehicle according to claim 1 or 2, wherein an air cleaner is arranged above and on one side of the engine for introducing air into the engine, and an air cleaner is arranged above and on the other side of the engine. and an exhaust device disposed on the side of the vehicle for discharging exhaust gas from the engine, and the overhang portion is disposed between the air cleaner and the exhaust device in a plan view.

According to the first aspect of the invention, the fuel tank has an overhang portion that extends from the tank main body to the upper side of the engine to expand the tank capacity. It is possible to greatly expand the capacity of the fuel tank. Moreover, since the heat shield plate is provided to separate the engine and the fuel tank, it is possible to suppress the temperature rise of the fuel tank due to the heat of the engine. In addition, the heat shield plate has a cover portion that covers the sides and bottom of the overhang portion, and the bottom surface of the cover portion slopes downward from the engine toward the fuel tank. Also, the overflowed fuel can be guided to the fuel tank side and prevented from flowing to the engine side.
According to the invention of claim 2, since the lower part of the tank support frame is opened, it is possible to accelerate the discharge of exhaust air that has cooled the engine.
According to the invention of claim 3, since the overhang portion is arranged between the air cleaner and the exhaust system in a plan view, the space between the air cleaner and the exhaust system can be used to expand the capacity of the fuel tank. .

It is a perspective view showing the body front part of the tractor concerning one embodiment of the present invention. It is a sectional view showing the body front part of a tractor. It is the perspective view which looked at the body front part of the tractor which removed covers, such as a bonnet, from the front. It is the perspective view which looked at the body front part of the tractor which removed covers, such as a bonnet, from the back. Fig. 3 is an exploded perspective view of the fuel tank, the tank support frame, and the heat shield plate as viewed from above; Fig. 3 is an exploded perspective view of the fuel tank, the tank support frame, and the heat shield plate as viewed from below; Fig. 2 is a perspective view of a tank support frame; (a) is a plan view of the tank support frame, (b) is a rear view of the tank support frame, and (c) is a side view of the tank support frame.

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 4, the front portion of a tractor 1, which is a work vehicle, has an engine room 3 covered with a bonnet 2 that can be opened and closed. In the engine room 3, there are an engine 4, a radiator 5 arranged in front of the engine 4, and a cooling fan arranged between the engine 4 and the radiator 5 and taking in engine cooling air from the front of the fuselage through the radiator 5. 6, a fuel tank 7 arranged adjacent to the rear of the engine 4, a heat shield plate 8 separating the engine 4 and the fuel tank 7, and a tank support frame supporting the fuel tank 7 and the heat shield plate 8. 9, an air cleaner 10 arranged longitudinally above and on one side of the engine 4 for cleaning air supplied to the engine 4; and an air cleaner 10 arranged above and on the other side of the engine 4 along the longitudinal direction. , and a muffler 11, which is an exhaust device for discharging exhaust gas from the engine 4, are housed therein.

As shown in FIGS. 2 to 6, the fuel tank 7 includes a tank main body 7a adjacent to the rear of the engine 4, and an overhang portion extending from the top of the tank main body 7a above the engine 4 to expand the tank capacity. 7b, a fuel filler port 7c provided on the upper portion of the overhang portion 7b, and a cap 7d that covers the fuel filler port 7c so as to be openable and closable. According to such a fuel tank 7, although it is arranged adjacent to the engine 4, it is possible to greatly expand the capacity of the fuel tank 7 by the overhang portion 7b. Also, the overhang portion 7b is arranged between the air cleaner 10 and the muffler 11 in plan view. With this arrangement, the space between the air cleaner 10 and the muffler 11 can be used to expand the capacity of the fuel tank 7 .

A tray 12 is provided around the fuel filler port 7c to receive fuel that overflows during fueling. A discharge hose 13 is connected to the tray 12 for discharging the fuel accumulated in the tray 12 downward.

As shown in FIGS. 2 to 6, the heat shield plate 8 includes a heat shield plate body portion 8a that separates the tank body portion 7a of the fuel tank 7 from the engine 4 and an overhang portion 7b side of the fuel tank 7. and a cover portion 8b that covers the sides and the bottom. Specifically, the cover portion 8b has a front surface 8c that covers the front of the overhang portion 7b, a left side surface 8d that covers the left side of the overhang portion 7b, and a right side surface 8e that covers the right side of the overhang portion 7b. , and a bottom surface 8f that covers the lower side of the overhang portion 7b. A bottom surface 8 f of the cover portion 8 b slopes downward from the engine 4 toward the fuel tank 7 . According to such a heat shield plate 8, even if fuel overflows from the filler port 7c or the tray 12 during refueling, not only can the overflowed fuel be received by the cover portion 8b, but also the received fuel can be received by the bottom surface 8f. Since it can be led to the fuel tank 7 side by the inclination, it is possible to prevent the fuel from flowing to the engine 4 side. The fuel guided to the fuel tank 7 side is discharged downward through the heat shield plate body 8a.

As shown in FIGS. 2 to 8, the tank support frame 9 is provided with a main frame 14 having a rectangular shape when viewed from the front, and a lower end portion of the main frame 14, which is erected in the engine room 3. A tank mounting table 15 mounted via a rubber plate (not shown), and a connection frame 16 extending rearward from the upper portion of the main frame 14 and having an inverted letter shape in plan view and connected to a steering bracket 31 to be described later. and a reinforcing member 17 installed between the upper end of the main frame 14 and the rear end of the connecting frame 16 . Further, the tank support frame 9 includes a tank fixing portion 18 for bolting the fuel tank 7, a heat shield plate fixing portion 19 for bolting the heat shield plate 8, a steering fixing portion 20 for bolting to the steering bracket 31, and the like. A fixed part is provided.
As can be seen from FIGS. 2 and 4, the portion of the fuel tank 7 mounted on the tank mounting table 15 is the bottom plate 7aa of the tank main body 7a.

The bottom of the tank support frame 9 is open. In other words, a space is secured below the tank mounting table 15 . According to such a tank support frame 9, the exhaust air that has cooled the engine 4 can be guided below the tank support frame 9 to facilitate the discharge of the exhaust air. Further, since a space is provided between the engine 4 and the heat shield plate 8 and communicated with the space below the tank mounting table 15, the flow of the air from the cooling fan 6 is prevented by the heat shield plate 8. can be avoided, and exhaust air can be discharged more efficiently.
2, 5, and 8, the bottom plate 21 is arranged below the tank mounting table 15 with a gap H1 therebetween. As is clear from FIGS. 2, 5 and 8, the front end portion 21a of the bottom plate base 21 is located at the front end portion of the bottom surface portion 7aa of the tank main body portion 7a with a gap H2 therebetween. It is in a bent state.

Next, the arrangement configuration of the communication device 32 provided in the tractor 1 will be described with reference to FIGS. 2 to 4. FIG. Although the tractor 1 of the present embodiment includes a GPS receiver as the communication device 32, any communication device that performs wireless communication with the outside of the fuselage may be used instead of the GPS receiver.

As shown in FIG. 2 , the tractor 1 is arranged behind the fuel tank 7 , has a steering column 34 supporting a steering handle 33 , a steering bracket 31 supporting the steering column 34 , and is arranged in front of the steering handle 33 . and a resin panel cover 36 that surrounds the meter panel 35 .

The communication device 32 is arranged above the connecting frame 16 and inside the panel cover 36 . Specifically, the communication device 32 is attached to the upper surface side of the reinforcing member 17 described above. According to such an arrangement configuration, the communication device 32 can be arranged at a location within the panel cover 36 that is less likely to be affected by communication, thereby avoiding a decrease in communication efficiency. Further, since the communication device 32 is supported using the strong connection frame 16 that connects the main frame 14 and the steering bracket 31, the possibility of damage to the communication device 32 due to the vibration of the aircraft can be reduced. Further, since the communication device 32 is attached to the reinforcing member 17 that is installed between the upper end portion of the main frame 14 and the rear end portion of the connecting frame 16, the supporting strength of the communication device 32 is increased, and the influence of machine body vibration is reduced. can be further reduced.

According to this embodiment constructed as described above, a tractor 1 comprising an engine 4, a fuel tank 7 arranged adjacent to the engine 4, and a tank support frame 9 supporting the fuel tank 7, The fuel tank 7 includes a tank body portion 7a adjacent to the engine 4 and an overhang portion 7b extending from the tank body portion 7a above the engine 4 to expand the tank capacity. It is possible to greatly expand the capacity of the fuel tank even though it is arranged.

Moreover, since the heat shield plate 8 that partitions the engine 4 and the fuel tank 7 is provided, the temperature rise of the fuel tank 7 due to the heat of the engine 4 can be suppressed. In addition, the heat shield plate 8 includes a cover portion 8b that covers the sides and bottom of the overhang portion 7b. Even if the fuel sometimes overflows, the overflowed fuel can be guided to the fuel tank 7 side and prevented from flowing to the engine 4 side.

Further, an air cleaner 10 is arranged above and on one side of the engine 4 to introduce air into the engine 4, and a muffler 11 is arranged above and on the other side of the engine 4 and discharges engine exhaust. Since the hang portion 7b is arranged between the air cleaner 10 and the muffler 11 in plan view, the space between the air cleaner 10 and the muffler 11 can be used to expand the capacity of the fuel tank 7. As shown in FIG.

In addition, since the bottom of the tank support frame 9 is opened, the discharge of exhaust air that has cooled the engine 4 can be facilitated.

1 Tractor 3 Engine Room 4 Engine 7 Fuel Tank 7a Tank Main Body 7b Overhang 7c Filling Port 8 Heat Shield 8a Heat Shield Main Body 8b Cover 8f Bottom 9 Tank Support Frame 10 Air Cleaner 11 Muffler

Claims (3)

engine and
A cooling fan that takes in engine cooling air from the front of the fuselage,
a fuel tank arranged adjacent to the rear of the engine;
A work vehicle comprising a tank support frame that supports the fuel tank,
The fuel tank is
a tank body adjacent to the engine;
an overhang portion that extends from the tank main body portion above the engine to expand the tank capacity;
a fuel filler port provided at the top of the overhang,
The tank support frame supports a heat shield partitioning between the engine and the fuel tank,
The heat shield plate includes a heat shield plate body portion that partitions between the tank body portion and the engine, and a cover portion that covers the side and bottom of the overhang portion ,
The bottom surface of the cover portion has a slope that decreases from the engine toward the fuel tank,
The tank support frame is provided with a tank mounting base on which the bottom plate of the tank main body is mounted, and a bottom plate base disposed with a gap below the tank mounting base,
The work vehicle, wherein the front end portion of the bottom plate base is bent at the front end portion of the bottom surface portion of the tank body portion so that the front end portion is high and the rear end portion is bent with a gap from the tank body portion. 2. The work vehicle according to claim 1, wherein the tank support frame is open below. an air cleaner disposed above and on one side of the engine for introducing air into the engine;
an exhaust device disposed above and on the other side of the engine for discharging exhaust of the engine,
The work vehicle according to claim 1 or 2, wherein the overhang portion is arranged between the air cleaner and the exhaust device in plan view.

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