JP7383563B2 - work vehicle - Google Patents

Description

The present invention relates to a work vehicle equipped with a plurality of fuel filters on a fuel supply path.

A bonnet that opens and closes the upper side of an engine placed in an engine room, a bonnet support frame that supports the bonnet, and a plurality of fuel filters provided on a fuel supply path extending from the fuel tank to the engine. A work vehicle described in Patent Document 1 is conventionally known, which is equipped with the fuel filter in front of the radiator in the engine room and in the rear of the front wheels outside the engine room.

According to the work vehicle of the above-mentioned document, the arrangement of the fuel filter makes it easier to cool the fuel filter, and also makes it easier to perform maintenance work such as draining some of the fuel filters. Since a part of the fuel filter is exposed at a remote location outside the machine, there is a problem that not only does the appearance deteriorate, but also the workability of assembling a plurality of fuel filters deteriorates.

JP 2017-65459 Publication

The present invention provides a work vehicle equipped with a plurality of fuel filters on a fuel supply path extending from a fuel tank to the engine, in which the plurality of fuel filters can be easily assembled and space-efficiently arranged. Our goal is to provide a work vehicle that can.

In order to solve the above problems, the present invention provides a bonnet that opens and closes the upper side of an engine placed in an engine room, a bonnet support frame that supports the bonnet, and a fuel tank that extends from a fuel tank to the engine. a plurality of fuel filters disposed on a supply path, the plurality of fuel filters being located within a space formed between the engine and the bonnet support frame, and on either left or right side of the engine. The fuel filters are arranged in a concentrated manner, and the drain cocks provided on the lower side of each of the fuel filters arranged horizontally are arranged in different vertical positions.

Second, a removable side cover is provided that covers a part of the lateral side of the engine room, and the fuel filter is arranged within a range covered by the side cover when viewed from the side. It is characterized by

Thirdly, a control section for an operator to perform a steering operation is provided at the rear of the engine room, and a mounting bracket to which the fuel filter is attached is provided on an upper side of a frame member disposed between the control section and the engine. It is characterized by the fact that it was established.

By centrally arranging the plurality of fuel filters in the space between the engine and the bonnet support frame and on one side of the left and right sides of the engine, the plurality of fuel filters can be assembled in a position where it is easy to assemble, and space efficiency is achieved. can be installed. Further, by differentiating the arrangement positions of the drain cocks of adjacently arranged fuel filters, it becomes easier to drain water from the fuel filters, thereby improving the maintainability of the fuel filters.

Further, a removable side cover is provided that covers a part of the lateral side of the engine room, and the fuel filter is arranged within a range covered by the side cover when viewed from the side. According to the above, since all the fuel filters are covered by the side cover, it is possible to prevent the fuel filter from spoiling its appearance, and maintenance work on all the fuel filters can be performed by removing the side cover. This also improves the efficiency of maintenance work.

Further, a control section for an operator to perform a steering operation is provided at the rear of the engine room, and a mounting bracket to which the fuel filter is attached is provided on an upper side of a frame member disposed between the control section and the engine. According to the above configuration, a space for performing maintenance work on the fuel filter can be secured below the fuel filter that is attached via the mounting bracket.

1 is an overall side view of a tractor to which a work vehicle of the present invention is applied. FIG. 3 is a perspective view of the main parts showing the side surface of the engine room. FIG. 3 is a left rear perspective view of main parts showing the configuration inside the engine room. FIG. 2 is a right rear perspective view of main parts showing the configuration inside the engine room. FIG. 2 is a side view of main parts showing the configuration inside the engine room. FIG. 3 is a rear view of main parts showing the configuration inside the engine room. FIG. 3 is a side view of the main parts of the mounting bracket. FIG. 3 is a rear view of the main parts showing the mounting bracket.

Embodiments of the present invention will be described below based on illustrated examples. FIG. 1 is an overall side view of a tractor to which a work vehicle of the present invention is applied. This tractor consists of a traveling machine body 2 having a pair of left and right crawler-type traveling devices 1, 1, and a rotary tilling device etc. (not shown in the figure) connected to the rear of the traveling body 2 via an elevating link 3 so as to be able to rise and fall freely. (not).

The crawler type traveling devices 1, 1 include a crawler frame 6 extending in the front-rear direction, a drive sprocket 7 and an idler wheel 8 rotatably supported in the front and rear of the crawler frame 6, and a drive sprocket 7 and an idler wheel 8. It is composed of a crawler 9 that is hung around.

A cabin 11 is provided in the rear half of the chassis frame 4 constituting the traveling aircraft 2, and is provided with a control unit for an operator to ride in. A cabin 11 is provided with a control section for an operator to ride in, and a cabin 11 is provided with a front section that covers the engine 10 from above to the sides. An engine room is formed that is covered by a bonnet 12. Further, a fuel tank (not shown) in which fuel is stored is provided on the rear side of the traveling body 2 (lower rear side of the cabin 11), and between the fuel tank and the engine 10, A fuel supply path is formed to supply fuel in the fuel tank to the engine. The specific configuration of the fuel supply path will be described later.

The bonnet 12 is configured to be movable up and down using its rear end as a rotational fulcrum, and by rotating the bonnet upward to an open position, the upper part of the engine room is opened and the interior of the engine room is opened. maintenance work can be carried out.

Incidentally, a notch is formed on the rear lower side of the side of the bonnet 12 to expose the rear side of the engine room, and a removable side cover 13 is provided in the notched part of the bonnet 12. (See Figure 1).

With this configuration, maintenance work inside the engine room can be performed by removing the side cover 13 even when the bonnet 12 is closed. The details will be described later.

Next, the configuration inside the engine room will be described based on FIGS. 2 to 8. FIG. 2 is a perspective view of the main parts showing the side view of the engine room, and FIGS. 3 to 6 are a rear perspective view of the main parts, a side view of the main parts, and a rear view of the main parts showing the configuration inside the engine room. 7 and 8 are a side view and a rear view of the main part showing the mounting bracket.

The engine 10 placed on the chassis frame 4 is firmly attached and fixed to the engine room. Further, on the front side of the engine 10, a radiator 21 serving as a cooling device for the engine 10, an intercooler 22 disposed in front of the radiator 21, and the like are provided. Further, a bonnet support frame 23 is provided between the rear end of the engine 10 and the front end of the cabin 11, and is bent into an inverted U shape (see FIG. 2).

The bonnet support frame 23 includes pillar parts 23a, 23a which extend in the vertical direction and whose base ends are attached and fixed to the chassis frame side, and a connecting part in the left and right direction that connects the upper ends of the pair of left and right pillar parts. 23b, and is formed by bending a single frame member. Further, the rear end side of the bonnet 12 is supported on the upper side (connecting portion) of the bonnet support frame 23 so as to be movable up and down.

In addition, reinforcing frames 24 and 26, which are beam-like members in the left and right direction that connect the midway portions in the vertical direction of the pair of left and right pillar portions 23a, 23a, are attached and fixed to the bonnet support frame 23. Specifically, the reinforcing frame includes an upper reinforcing frame 24 that connects the upper parts of the pillar parts 23a and 23a, and a lower reinforcing frame 26 that connects the lower parts of the pillar parts 23a and 23a. .

Further, the bonnet support frame 23 is provided with a pair of left and right reinforcing members 25, 25 in the shape of a cane, which are provided diagonally to connect the upper reinforcing frame 24 and the pillar portion 23a. The support frame 23 can be more strongly reinforced, and a wall surface having a heat shielding effect can be formed over a wider area between the engine room and the cabin 11 (see FIG. 8, etc.).

Incidentally, within the space formed between the engine 10 and the bonnet support frame 23, and on either the left or right side of the engine 10 (in the illustrated example, the left in the direction of travel, hereinafter simply referred to as the left). In the space (filter installation space S), a plurality of fuel filters 31, 32, and 33 provided on the fuel supply path are centrally arranged (see FIGS. 2 to 6). The configuration of the fuel supply route will be specifically explained below.

The fuel supply path is constituted by a hose (pipe)-shaped supply member (connection member) that is long in the front-rear direction and extends from the fuel tank at the rear of the traveling aircraft 2 toward the engine 10 in the engine room. A plurality of fuel filters 31, 32, 33 and an electrically controlled electromagnetic pump 34 are provided on the path of the supply member. A line filter 31, a first fuel filter (primary filter) 32, and a second fuel filter (secondary filter) 33 are provided as a plurality of fuel filters. It is provided between the filter 32 and the filter 32 .

Thereby, the fuel stored in the fuel tank is transferred from the fuel tank to the line filter 31 to the electromagnetic pump to the first fuel tank before being supplied to the engine via the fuel supply path (supply member). The fuel is configured to pass through the filter 32 → second fuel filter 33.

At this time, the supply members include a pipe-shaped first supply member 46 that connects the fuel tank and the line filter 31, a second supply member 47 that connects the line filter 31 and the electromagnetic pump 34, and the electromagnetic pump 34. The second fuel filter includes a third supply member 48 that connects the pump 34 and the first fuel filter 32, and a fourth supply member that connects the first fuel filter 32 and the second fuel filter 33. The engine 10 is configured to be supplied with fuel filtered by the filter 33.

Further, the fuel tank and the engine 10 are provided separately at the front and rear of the chassis frame 4 extending in the front-rear direction, and the supply member (first supply member 46) is formed long in the front-rear direction. ing. According to this configuration, the temperature of the fuel in the fuel tank is prevented from rising due to the heat in the engine room, and the fuel supplied from the fuel tank is cooled more and is delivered to the engine room (engine 10) side. can be supplied to

The line filter 31 is disposed upstream of the electromagnetic pump 34 in the fuel supply path, and removes foreign matter from the fuel supplied to the electromagnetic pump 34, thereby preventing the foreign matter from clogging the electromagnetic pump 34. It is designed to prevent this from happening.

Further, the line filter 31 is removably bolted to the frame side of the chassis frame 4 that forms the engine room and is located near the base end side of the bonnet support frame 23 (column portion 23a). It is configured to be fixed within the engine room via a support bracket 36 (see FIGS. 4 and 5).

The support bracket 36 is a plate-like member that extends in the vertical direction and has an upper end bent in an angular shape to form a fixing portion that is bolted to the chassis frame 4 side. The line filter 31 is attached and fixed to the left and right inner surfaces of the lower part of the support bracket 36 (see FIG. 4).

With this configuration, the line filter 31 is located at the left and right outer (left) side ends in the filter installation space S, and is located below the first fuel filter 33 in side view, and more specifically, at the bottom of the chassis. It is supported within the frame 4 (at a position hidden by the chassis frame 4 when viewed from the side) (see FIGS. 2 to 5).

The electromagnetic pump 34 is supported in front of the line filter 31, more specifically, near the front of the filter installation space S, and is mounted and fixed within the frame of the chassis frame 4 like the line filter 31. has been done.

The electromagnetic pump 34 is configured such that the amount of fuel supplied to the engine 10 can be controlled by a control unit on the traveling aircraft side, and is supported from the electromagnetic pump 34 to the rear upper side of the electromagnetic pump 34. The configuration is such that a necessary amount of fuel can be sent toward the first fuel filter 32.

The first fuel filter 32 and the second fuel filter 33 are configured so that foreign matter and moisture can be separated from the fuel pumped by the electromagnetic pump 34 on the lower side thereof. , 33 are provided with a storage section that stores moisture (and foreign matter) separated from the fuel, and drain cocks 37 and 38 that discharge the separated moisture from the lower end side of each storage section.

Further, the first fuel filter 32 and the second fuel filter 33 are attached to the bonnet support frame 23 via a mounting bracket 41 provided on the pillar portion 23a on one (left) side of the bonnet support frame 23. It is attached and fixed so that it is suspended from the upper side of 23.

The mounting bracket 41 includes a first mounting member 41A attached to the upper side of the left column portion 23a of the bonnet support frame 23, and extends forward from the front side of the first mounting member 42. The first fuel filter 32 is attached such that the upper side of the first fuel filter 32 is suspended from the left side of the second attachment member 43, and The upper part of the second fuel filter 33 is hung from the right side of the second mounting member 43.

According to this configuration, the first fuel filter 32 and the second fuel filter 33 are mounted and fixed on the upper side of the filter installation space S in a state in which they are arranged in the left-right direction in order from the right and left outer (left) sides. can do. Thereby, a space can be secured below each of the fuel filters 32, 33 to install a receiving tray for receiving moisture discharged from the drain cocks 37, 38 (see FIG. 5, etc.).

According to the above configuration, the plurality of (three in the illustrated example) fuel filters 31, 32, 33 are provided within the space formed between the engine 10 and the bonnet support frame 23, and within the space formed between the engine 10 and the bonnet support frame 23. They can be centrally arranged in a space (filter installation space S) located on the left side in the direction of movement of the engine 10. Therefore, the work of assembling the plurality of fuel filters 31, 32, 33 becomes easy, and each fuel filter 31, 32, 33 can be arranged in the engine room with good space efficiency.

Further, the first fuel filter 32 and the second fuel filter 33 are configured to be mounted and supported with their front and back positions and up and down positions different when viewed from the side. There is.

Specifically, the first fuel filter 32 overlaps the second fuel filter 33 in a side view, but is slightly shifted forward than the second fuel filter 33, and the first fuel filter 32 overlaps the second fuel filter 33 in a side view. The drain cock 37 on the lower end side of the filter 32 is arranged above the drain cock 38 of the second fuel filter 33 (see FIG. 5, etc.).

According to this configuration, when an operator performs maintenance work on the fuel filters 32 and 33 that are supported side by side in the left and right direction in the filter installation space S from the left and right outside (left) sides of the engine room, Since the drain cock 37 of the first fuel filter 32 and the drain cock 38 of the second fuel filter 33 can be visually recognized at the same time, maintenance such as draining water through each drain cock 37, 38 can be performed more easily. .

Further, with the above-described configuration, a plurality of fuel filters 31, 32, 33 are centrally arranged in the filter installation space S in the engine room, and the electromagnetic pump 34 is supported near the front of the filter installation space S. can be easily exposed by removing the side cover 13 disposed on the rear side of the bonnet 12.

That is, by removing the side cover 13, the operator can perform maintenance work on each of the fuel filters 31, 32, 33 and the electromagnetic pump 34 arranged on the fuel supply path in one place (near the side cover 13). ), maintenance work efficiency is further improved. Further, by setting the side cover 13, the plurality of fuel filters and the electromagnetic pump 34 are hidden in the engine room, so that the appearance can be maintained in a good condition.

10 Engine 11 Cabin (control unit)
12 Bonnet 13 Side cover 23 Bonnet support frame (support frame)
31 Line filter (fuel filter)
32 First fuel filter (fuel filter)
33 Second fuel filter (fuel filter)
37 Drain cock 38 Drain cock 41 Mounting bracket

Claims (2)

A bonnet that opens and closes the upper side of the engine placed in the engine room;
a bonnet support frame that supports the bonnet;
a plurality of fuel filters arranged on a fuel supply path extending from the fuel tank to the engine,
The plurality of fuel filters are arranged in a space formed between the engine and the bonnet support frame, and concentrated on one left and right side of the engine,
The drain cocks provided at the bottom of each of the fuel filters arranged horizontally are arranged in different vertical positions ,
A removable side cover is provided to cover a part of the side side of the engine room,
The fuel filter is arranged within a range covered by the side cover when viewed from the side.
A work vehicle characterized by : A bonnet that opens and closes the upper side of the engine placed in the engine room;
a bonnet support frame that supports the bonnet;
a plurality of fuel filters arranged on a fuel supply path extending from the fuel tank to the engine,
The plurality of fuel filters are arranged in a space formed between the engine and the bonnet support frame, and concentrated on one left and right side of the engine,
The drain cocks provided at the bottom of each of the fuel filters arranged horizontally are arranged in different vertical positions,
A control unit is provided at the rear of the engine room for an operator to perform a steering operation,
A mounting bracket to which the fuel filter is attached is provided on the upper side of a frame member disposed between the control section and the engine.
A work vehicle characterized by :

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