JP7474402B2 - Work vehicles - Google Patents

Description

The present invention relates to a work vehicle such as a rice planter.

There are known work vehicles, such as rice planters, that have an engine mounted on the front side of the vehicle body and an engine hood that covers the engine (see, for example, Patent Document 1).

JP 2013-74808 A

However, for work vehicles such as the conventional rice transplanters described above, high workability for maintenance work involving the installation and removal of the engine hood has not necessarily been fully realized.

The present invention takes into consideration the above-mentioned problems with the conventional technology and aims to provide a work vehicle that can achieve higher workability when carrying out maintenance work involving the installation and removal of an engine hood.

The first aspect of the present invention is an engine (210) provided on a front side of a vehicle body (100);
An engine hood (10) covering the engine (210);
Equipped with
The engine hood (10) has an upper hood portion (10U) removably attached to the vehicle body (100), a front hood portion (10F) removably attached to the vehicle body (100), a left hood portion (10L) fixed to the vehicle body (100), and a right hood portion (10R) fixed to the vehicle body (100),
An overlapping portion is formed extending downward from the left end portion of the upper hood portion (10U), and an upper end portion of the left hood portion (10L) is formed as an overlapping portion. By overlapping the respective overlapping portions, the upper hood portion (10U) is overlapped on the left hood portion (10L) from the outside with a gap therebetween,
An overlapping portion is formed extending downward from the right end portion of the upper hood portion (10U), and an upper end portion of the right hood portion (10R) is formed as an overlapping portion. By overlapping the respective overlapping portions, the upper hood portion (10U) is overlapped on the right hood portion (10R) from the outside with a gap therebetween,
An overlapping portion is formed extending rearward from the left end portion of the front hood portion (10F), and the front end portion of the left hood portion (10L) is formed as an overlapping portion. By overlapping the respective overlapping portions, the front hood portion (10F) is overlapped on the left hood portion (10L) from the outside with a gap therebetween,
This work vehicle is characterized in that an overlap is formed extending rearward from the right end of the front hood portion (10F), and the front end of the right side hood portion (10R) is formed as an overlap, and by overlapping the respective overlaps, the front hood portion (10F) is overlapped onto the right side hood portion (10R) from the outside with a gap between them.
In the second aspect of the present invention, an overlap space is formed extending upward from the left front step (40L), and the lower end of the left hood portion (10L) is formed as an overlap space. By overlapping the respective overlap spaces, the left hood portion (10L) is overlapped on the left front step (40L) from the outside with a gap therebetween,
This is a first work vehicle of the present invention, characterized in that an overlap is formed extending upward from the right side front step (40R), and the lower end of the right side hood portion (10R) is formed as an overlap, and by overlapping each of the overlaps, the right side hood portion (10R) is overlapped on the right side front step (40R) from the outside with a gap between them.
The third aspect of the present invention is an engine accessory stay (30) provided upright on the front side portion of the vehicle body (100),
a headlight (20) fixed to the engine accessory stay (30) by utilizing fastening of a bolt member (21S);
Equipped with
The engine accessory stay (30) includes a left engine accessory stay frame (30L) erected on the left side of the vehicle body (100), a right engine accessory stay frame (30R) erected on the right side of the vehicle body (100), and an engine accessory stay bar (30B) provided so as to bridge between the left engine accessory stay frame (30L) and the right engine accessory stay frame (30R),
The upper hood portion (10U) is removably attached to the engine accessory stay bar (30B) by utilizing the engagement of a hook member (11U),
the front hood portion (10F) is removably attached to the left engine accessory stay frame (30L) and the right engine accessory stay frame (30R) by utilizing a hook member (11F) engaged therewith;
The left side hood portion (10L) is fixed to the left side engine accessory stay frame (30L) by utilizing fastening of a bolt member (11L),
The right side hood portion (10R) is fixed to the right side engine accessory stay frame (30R) by utilizing fastening of a bolt member (11R),
The work vehicle according to the second aspect of the present invention is characterized in that the headlight (20) is fixed to the engine accessory stay bar (30B) via a headlight stay (20S).
In the fourth aspect of the present invention, the right side hood portion (10R) covers the outside, front, rear, and upper portions of the engine radiator (70), and a shroud (70S) is provided on the inside of the engine radiator (70), thereby forming a box shape surrounding the engine radiator (70),
A windshield (91) is provided between the engine (210) and the operating column section,
a heat shield is provided movably to a space between the front hood portion (10F) and the engine (210), a space between the upper hood portion (10U) and the engine (210), and a space between the operation column portion and the engine (210);
The heat shield can move along rails provided on the left hood portion (10L) and the right hood portion (10R),
This is a third work vehicle of the present invention, characterized in that the heat shield is automatically moved by a motor based on the temperature detected by a thermocouple so that the exhaust heat and the flow of hot air to the operator are regulated.
The first invention related to the present invention is an engine (210) provided on the front side of a vehicle body (100);
An engine hood (10) covering the engine (210);
Equipped with
The engine hood (10) of this work vehicle is characterized in having an upper hood portion (10U) removably attached to the vehicle body (100), a front hood portion (10F) removably attached to the vehicle body (100), a left hood portion (10L) fixed to the vehicle body (100), and a right hood portion (10R) fixed to the vehicle body (100).

A second invention related to the present invention includes an engine accessory stay (30) erected on the front side portion of the vehicle body (100),
The upper hood portion (10U) is removably attached to the engine accessory stay (30) by utilizing the engagement of a hook member (11U),
The front hood portion (10F) is removably attached to the engine accessory stay (30) by utilizing a hook member (11F) for engagement,
The left side hood portion (10L) is fixed to the engine accessory stay (30) by utilizing fastening of a bolt member (11L),
This is a work vehicle of the first invention related to the present invention , characterized in that the right side hood portion (10R) is fixed to the engine accessory stay (30) by utilizing fastening of a bolt member (11R).

A third invention related to the present invention includes a headlight (20) fixed to the engine accessory stay (30) by utilizing fastening of a bolt member (21S),
The upper hood portion (10U) is located above the headlight (20),
The front hood portion (10F) is located in front of the headlight (20),
The left side hood portion (10L) is located to the left of the headlight (20),
The work vehicle according to a second invention related to the present invention is characterized in that the right side hood portion (10R) is located to the right of the headlight (20).

A fourth invention related to the present invention is that the engine accessory stay (30) has a curved left engine accessory stay frame (30L) provided on the left side of the vehicle body (100), a curved right engine accessory stay frame (30R) provided on the right side of the vehicle body (100), and an engine accessory stay bar (30B) provided to bridge between the left engine accessory stay frame (30L) and the right engine accessory stay frame (30R),
The upper hood portion (10U) is removably attached to the engine accessory stay bar (30B),
the front hood portion (10F) is removably attached to the left engine accessory stay frame (30L) and the right engine accessory stay frame (30R),
The left side hood portion (10L) is fixed to the left side engine accessory stay frame (30L),
The work vehicle according to a second invention related to the present invention is characterized in that the right side hood portion (10R) is fixed to the right side engine accessory stay frame (30R).

According to the present invention, it is possible to realize higher workability in maintenance work involving installation and removal of an engine hood.
According to the first aspect of the present invention , it is possible to realize higher workability in maintenance work involving installation and removal of an engine hood.

According to the second aspect of the present invention , in addition to the effect of the first aspect of the present invention , it is possible to improve the convenience regarding the attachment and detachment of the engine hood.

According to the third aspect of the present invention , in addition to the effect of the second aspect of the present invention , it is possible to improve the accuracy of mounting the engine hood.

According to the fourth aspect of the present invention , in addition to the effect of the second aspect of the present invention , it is possible to simplify the structure relating to the attachment and detachment of the engine hood.

FIG. 1 is a left side view of a rice transplanter according to an embodiment of the present invention. FIG. 1 is a perspective view of a rice transplanter according to an embodiment of the present invention; FIG. 1 is a perspective view of the engine hood and its surroundings of a rice transplanter according to an embodiment of the present invention; FIG. 2 is a perspective view of the vicinity of an engine hood of a rice transplanter according to an embodiment of the present invention (part 2) FIG. 1 is a perspective view of the engine accessory stay, the front step stay, and the lower column stay of a rice transplanter according to an embodiment of the present invention; FIG. 2 is a perspective view of the engine accessory stay, the front step stay, and the lower column stay of the rice transplanter according to the embodiment of the present invention; FIG. 3 is a perspective view of the vicinity of an engine hood of a rice transplanter according to an embodiment of the present invention (part 3) FIG. 1 is a perspective view of an upper hood portion of a rice transplanter according to an embodiment of the present invention; FIG. 1 is a perspective view of a front hood portion of a rice transplanter according to an embodiment of the present invention; FIG. 1 is a perspective view of the upper hood portion and the front hood portion of a rice transplanter according to an embodiment of the present invention; FIG. 1 is a left side view of the upper hood portion and the front hood portion of a rice transplanter according to an embodiment of the present invention; FIG. 1 is a perspective view of the vicinity of a right hood portion of a rice transplanter according to an embodiment of the present invention; FIG. 1 is a perspective view of the left and right front steps of a rice transplanter according to an embodiment of the present invention; FIG. 2A is a schematic front view of the upper hood section and the right hood section of the rice transplanter according to the embodiment of the present invention; FIG. 2B is a schematic plan view of the front hood section and the right hood section of the rice transplanter according to the embodiment of the present invention; FIG. 2 is a schematic left side view of the vicinity of the upper hood portion and the front hood portion of the rice transplanter according to the embodiment of the present invention. FIG. 2 is a schematic perspective view of the vicinity of a front hood portion of the rice transplanter according to the embodiment of the present invention; 1 is a schematic front view of the rice transplanter according to an embodiment of the present invention near a right front step; FIG. 1 is a perspective view of the headlight stay and its vicinity in a rice transplanter according to an embodiment of the present invention; FIG. 1 is a perspective view of a headlight stay of a rice transplanter according to an embodiment of the present invention; FIG. 1 is a perspective view of an engine accessory stay of a rice transplanter according to an embodiment of the present invention; FIG. 1 is a perspective view of a front step stay of a rice transplanter according to an embodiment of the present invention; FIG. 1 is a perspective view of a lower column stay of a rice transplanter according to an embodiment of the present invention; FIG. 1 is an explanatory diagram of a radiator cover of a rice transplanter according to an embodiment of the present invention. FIG. 1 is an explanatory diagram of the relationship between the left and right linear antenna stays and the hood of the rice transplanter according to the embodiment of the present invention; FIG. 1 is an explanatory diagram (part 1) of a method for releasing hot air from the center of the upper hood part of the rice transplanter according to an embodiment of the present invention. FIG. 2 is an explanatory diagram (part 2) of a method for releasing hot air from the center of the upper hood part of the rice transplanter according to the embodiment of the present invention. FIG. 3 is an explanatory diagram of a method for releasing hot air from the center of the upper hood part of the rice transplanter according to the embodiment of the present invention. FIG. 4 is an explanatory diagram of a method for releasing hot air from the center of the upper hood part of the rice transplanter according to the embodiment of the present invention. FIG. 5 is an explanatory diagram of a method for releasing hot air from the center of the upper hood part of the rice transplanter according to the embodiment of the present invention. FIG. 6 is an explanatory diagram of a method for releasing hot air from the center of the upper hood part of the rice transplanter according to the embodiment of the present invention. FIG. 7 is an explanatory diagram of a method for releasing hot air from the center of the upper hood part of the rice transplanter according to the embodiment of the present invention. FIG. 8 is an explanatory diagram of a method for releasing hot air from the center of the upper hood part of the rice transplanter according to the embodiment of the present invention. FIG. 9 is an explanatory diagram of a method for releasing hot air from the center of the upper hood part of the rice transplanter according to the embodiment of the present invention. FIG. 10 is an explanatory diagram of a method for releasing hot air from the center of the upper hood part of the rice transplanter according to the embodiment of the present invention. An explanatory diagram (part 11) of a method for releasing hot air from the center of the upper hood part of the rice transplanter according to the embodiment of the present invention. An explanatory diagram (part 12) of a method for releasing hot air from the center of the upper hood part of the rice transplanter according to the embodiment of the present invention. (a) An explanatory diagram (part 13) of a method for releasing hot air from the center of the upper hood part of a rice transplanter according to an embodiment of the present invention, (b) An explanatory diagram (part 14) of a method for releasing hot air from the center of the upper hood part of a rice transplanter according to an embodiment of the present invention FIG. 1 is an explanatory diagram (part 1) of a method for releasing hot air from the rear side of the engine of a rice transplanter according to an embodiment of the present invention. FIG. 2 is an explanatory diagram (part 2) of a method for releasing hot air from the rear side of the engine of the rice transplanter according to the embodiment of the present invention. FIG. 3 is an explanatory diagram of a method for releasing hot air from the rear side of the engine of the rice transplanter according to the embodiment of the present invention. FIG. 1 is an explanatory diagram (part 1) of an air cleaner suction port of an air cleaner suction hose of a rice transplanter according to an embodiment of the present invention. FIG. 2 is an explanatory diagram of an air cleaner suction port of an air cleaner suction hose of a rice transplanter according to an embodiment of the present invention (part 2) FIG. 3 is an explanatory diagram of an air cleaner suction port of an air cleaner suction hose of a rice transplanter according to an embodiment of the present invention (part 3) FIG. 1 is an explanatory diagram (part 1) of an efficient cooling configuration by the hood front opening of the engine hood of the rice transplanter according to the embodiment of the present invention. FIG. 2 is an explanatory diagram (part 2) of an efficient cooling configuration by the hood front opening of the engine hood of the rice transplanter according to the embodiment of the present invention. FIG. 3 is an explanatory diagram of an efficient cooling configuration by the hood front opening of the engine hood of the rice transplanter according to the embodiment of the present invention. FIG. 4 is an explanatory diagram of an efficient cooling configuration by the hood front opening of the engine hood of the rice transplanter according to the embodiment of the present invention. FIG. 5 is an explanatory diagram of an efficient cooling configuration by the hood front opening of the engine hood of the rice transplanter according to the embodiment of the present invention. (a) An explanatory diagram (part 1) of a front-rear two-part structure of an upper hood part of a rice transplanter according to an embodiment of the present invention, (b) An explanatory diagram (part 2) of a front-rear two-part structure of an upper hood part of a rice transplanter according to an embodiment of the present invention, (c) An explanatory diagram (part 3) of a front-rear two-part structure of an upper hood part of a rice transplanter according to an embodiment of the present invention FIG. 1 is an explanatory diagram of a heat exhaust method for an engine of a rice transplanter according to an embodiment of the present invention (part 1) FIG. 2 is an explanatory diagram of a heat exhaust method for an engine of a rice transplanter according to an embodiment of the present invention (part 2) FIG. 3 is an explanatory diagram of a heat exhaust method for an engine of a rice transplanter according to an embodiment of the present invention. FIG. 4 is an explanatory diagram of a heat exhaust method for an engine of a rice transplanter according to an embodiment of the present invention. FIG. 5 is an explanatory diagram of a heat exhaust method for an engine of a rice transplanter according to an embodiment of the present invention.

The embodiment of the present invention will be described in detail with reference to the drawings.

The same applies below, but some components may not be shown in the drawings or may be shown in perspective or in an omitted form.

(1) First, the configuration and operation of a rice transplanter according to an embodiment of the present invention will be specifically described with reference primarily to Figures 1 to 3.

Here, FIG. 1 is a left side view of a rice transplanter according to an embodiment of the present invention, FIG. 2 is a perspective view of a rice transplanter according to an embodiment of the present invention, and FIG. 3 is a perspective view (part 1) of the vicinity of the engine hood 10 of a rice transplanter according to an embodiment of the present invention.

The rice transplanter of this embodiment is a rice transplanter that travels on a traveling device 220 having a pair of left and right front wheels 221 and rear wheels 222 in response to the control of a control device for manual or automatic steering operation on a steering device 230 of the vehicle body 100, levels the field with a ground leveling device 260 having a ground leveling rotor member 261 and a ground leveling float member 262, plants seedlings in the field with a seedling planting device 240 having a seedling planting tool 241 and a seedling carrying platform 242, and fertilizes the field with a fertilizer device 250.

The traveling device 220, the seedling planting device 240, the fertilizer applicator 250, and the soil leveling device 260 are driven by the power of the engine 210, which is transmitted via a main transmission and a sub-transmission, which are HSTs.

The rice transplanter of this embodiment is an example of a work vehicle in the present invention.

The engine hood 10 is a hood that covers the engine 210 located at the front of the vehicle body 100.

(2) Next, we will explain in more detail the configuration and operation of the rice transplanter according to the embodiment of the present invention.

The engine hood 10 has an upper hood section 10U that is removably attached to the vehicle body 100, a front hood section 10F that is removably attached to the vehicle body 100, a left hood section 10L that is fixed to the vehicle body 100, and a right hood section 10R that is fixed to the vehicle body 100.

The front engine hood configuration is explained in detail.

The engine accessory stay 30 is a stay that is erected on the front side of the vehicle body 100.

The upper hood section 10U is removably attached to the engine accessory stay 30 by utilizing the hook member 11U. The front hood section 10F is removably attached to the engine accessory stay 30 by utilizing the hook member 11F.

The left hood section 10L is fixed to the engine accessory stay 30 by fastening the bolt member 11L. The right hood section 10R is fixed to the engine accessory stay 30 by fastening the bolt member 11R.

As shown in FIG. 4, which is a perspective view (part 2) of the vicinity of the engine hood 10 of the rice transplanter according to the embodiment of the present invention, engine maintenance can be realized for the oil level gauge, air cleaner, reserve tank, engine oil filler, and radiator cooling water filler by removing the exterior. The upper hood section 10U as the upper hood is fixed to the lower column stay 60 and the engine accessory stay 30 so that it can be removed with one touch. The front hood section 10F as the lower hood is fixed to the engine accessory stay 30 so that it can be removed with one touch. The left hood section 10L as the left hood (LH) is fixed to the lower column stay 60 and the engine accessory stay 30 with bolts. The right hood section 10R as the right hood (RH) is fixed to the lower column stay 60 and the engine accessory stay 30 with bolts. The headlight 20 as the headlamp is fixed to the engine accessory stay 30 with bolts. The left front step 40L, which serves as the left front step (LH), is fixed to the front step stay 50 with bolts. The right front step 40R, which serves as the right front step (RH), is fixed to the front step stay 50 with bolts.

As shown in FIG. 5, which is a perspective view (part 1) of the engine accessory stay 30, front step stay 50, and lower column stay 60 of a rice transplanter according to an embodiment of the present invention, six exterior components are fixed independently across the three components, but aligning the components during assembly is not difficult. Only the upper hood section 10U and the front hood section 10F can be removed individually with a single touch, allowing daily inspection of each part of the engine.

The engine hood 10 is composed of four parts, with the headlight 20 located at the top front of the vehicle body at the center: upper hood section 10U as the upper (upper) hood, front hood section 10F as the front (lower) hood, left hood section 10L as the left (LH) hood, and right hood section 10R as the right (RH) hood. Here, the headlight 20, left hood section 10L, and right hood section 10R are fixed to the vehicle body 100 with bolts or the like and are configured so that they cannot be removed without tools, but the upper hood section 10U and front hood section 10F are fixed with hooks or the like and are configured so that they can be removed with a single touch. Each of the four parts is configured to be installed independently on the vehicle body.

By making it possible to remove the upper hood section 10U and the front hood section 10F with a single touch, the oil level gauge, air cleaner, reserve tank, and engine oil filler port can be easily checked. In addition to daily inspections, simple maintenance such as filter replacement, cooling water addition, and oil addition can be performed without tools, resulting in a configuration with good workability.

The headlight 20 is a light that is fixed to the engine accessory stay 30 by using the bolt member 21S.

The upper hood section 10U is located above the headlight 20. The front hood section 10F is located in front of the headlight 20.

The left hood section 10L is located to the left of the headlight 20. The right hood section 10R is located to the right of the headlight 20.

We will explain in detail how to align the front engine hood.

As shown in FIG. 6, which is a perspective view (part 2) of the engine accessory stay 30, front step stay 50, and lower column stay 60 of a rice transplanter according to an embodiment of the present invention, the left hood section 10L and the right hood section 10R are attached and fixed so as to match the headlight 20 fixed to the engine accessory stay 30 via the headlight stay 20S as a lamp stay. Since it is believed that the front and rear mounting pitches of the left hood section 10L and the right hood section 10R do not match, it is often desirable for the bolt holes of the bolt fastening members 12L and 12R as the rear bolt fixing sections of the left hood section 10L and the right hood section 10R to be slightly longer holes.

As shown in FIG. 7, which is a perspective view (part 3) of the engine hood 10 and its vicinity of the rice transplanter according to the embodiment of the present invention, the upper hood section 10U and the front hood section 10F are attached and fixed so as to cover the headlight 20, the left hood section 10L, the right hood section 10R and the panel (hood).

The engine accessory stay 30 has a curved left engine accessory stay frame 30L provided on the left side of the vehicle body 100, a curved right engine accessory stay frame 30R provided on the right side of the vehicle body 100, and an engine accessory stay bar 30B provided to bridge between the left engine accessory stay frame 30L and the right engine accessory stay frame 30R.

The upper hood section 10U is removably attached to the engine accessory stay bar 30B. The front hood section 10F is removably attached to the left engine accessory stay frame 30L and the right engine accessory stay frame 30R.

As shown in FIG. 8, which is a perspective view of the upper hood portion 10U of a rice transplanter according to an embodiment of the present invention, the upper hood portion 10U has four hook attachment points using hook members 11U, but the details of the attachment specifications are optional.

As shown in FIG. 9, which is a perspective view of the front hood portion 10F of a rice transplanter according to an embodiment of the present invention, the front hood portion 10F has four hook attachment points using hook members 11F, but the details of the attachment specifications are optional.

As shown in FIG. 10, which is a perspective view of the upper hood section 10U and the front hood section 10F of a rice transplanter according to an embodiment of the present invention, the hooks are attached at four points by the hook locking members 12U of the upper hood section 10U, and the hooks are attached at four points by the hook locking members 12F of the front hood section 10F, but the details of the attachment specifications are arbitrary. For example, the rear hook member 11U may be attached to the bar member 61 of the lower column stay 60.

As shown in FIG. 11, which is a left side view of the upper hood portion 10U and the front hood portion 10F of a rice transplanter according to an embodiment of the present invention, not only are there grippable parts at the front and rear of the upper hood portion 10U to facilitate one-touch removal, but there are also grippable parts at the top and bottom of the front hood portion 10F to facilitate one-touch removal.

The left hood section 10L is fixed to the left engine accessory stay frame 30L. The right hood section 10R is fixed to the right engine accessory stay frame 30R.

As shown in FIG. 12, which is a perspective view of the right hood portion 10R and its vicinity in a rice transplanter according to an embodiment of the present invention, the right hood portion 10R is bolted at two points using bolt members 11R, and the left hood portion 10L is also bolted at two points using bolt members 11L, but the details of the mounting specifications are optional.

As shown in FIG. 13, which is a perspective view of the left front step 40L and the right front step 40R of the rice transplanter according to the embodiment of the present invention, the left front step 40L is bolted to the front step stay 50 at two points by the bolt members, and the right front step 40R is bolted to the front step stay 50 at two points by the bolt members, but the details of the mounting specifications are arbitrary. For example, a further front center bolt may be added as one mounting point to securely fasten the left front step 40L to the front step stay 50, and a further front center bolt may be added as one mounting point to securely fasten the right front step 40R to the front step stay 50.

The engine accessory stay 30, which is a frame formed at the front upper part of the vehicle body, is provided with a headlight bolt fixing portion for the bolt member 21S that attaches the headlight stay 20S, bolt fastening members 12L and 12R as the front bolt fixing portions of the left hood portion 10L and the right hood portion 10R, a hook locking member 12U as the front hook fixing portion of the upper hood portion 10U, and a hook locking member 12F as the hook fixing portion of the front hood portion 10F. These parts are configured to be attached and fixed around the fixed headlight 20, with each edge of the upper hood portion 10U, the front hood portion 10F, the left hood portion 10L, and the right hood portion 10R abutting against it.

The exterior parts of the front of the vehicle, such as the engine hood 10, headlight 20, left front step 40L, and right front step 40R, are assembled across all or part of the three components of the front frame stays, the engine accessory stay 30, front step stay 50, and lower column stay 60, making it difficult to align them, but by providing a part of each mounting part on the engine accessory stay 30 as a single reference member and configuring it to align there as much as possible, it is thought that it will be easier to align them during assembly and the appearance will also be improved. By attaching the rear part of the upper hood part 10U, the lower part of the front hood part 10F, the lower part of the left hood part 10L, and the lower part of the right hood part 10R so that they cover the exterior parts beyond them, it is thought that the appearance will not be impaired even if there is a misalignment from front to back or up to down.

This section provides a detailed explanation of how to stack the front engine hood.

As shown in FIG. 14(a), which is a schematic front view of the upper hood section 10U and the right hood section 10R of a rice transplanter according to an embodiment of the present invention, and FIG. 14(b), which is a schematic plan view of the front hood section 10F and the right hood section 10R of a rice transplanter according to an embodiment of the present invention, the upper hood section 10U is not aligned with the right hood section 10R but is raised above it with a large overlap, and the front hood section 10F is not aligned with the right hood section 10R but is raised above it with a large overlap.

As shown in FIG. 15, which is a schematic left side view of the upper hood section 10U and the front hood section 10F of a rice transplanter according to an embodiment of the present invention, the pitch between the front and rear panel hoods 10P and the headlights 20 of the upper hood section 10U is thought to be incompatible, so the panel hood side is used as the reference for assembly, and the headlight 20 side is simply overlapped so that misalignment between the front and rear is not a problem. The pitch between the top and bottom headlights 20 of the front hood section 10F is thought to be incompatible, so the headlight 20 side is used as the reference for assembly, and the front step side is simply overlapped so that misalignment between the top and bottom is not a problem. There are no tabs on the part where the rear end of the upper hood section 10U protrudes beyond the top surface of the panel hood 10P and is hidden by overlapping.

As shown in FIG. 16, which is a schematic perspective view of the vicinity of the front hood portion 10F of a rice transplanter according to an embodiment of the present invention, when the front hood portion 10F is assembled to the headlight 20 by nesting or cutting it, it is desirable to have an attachment configuration that allows it to be shifted in the matching direction.

As shown in Fig. 17, which is a schematic front view of the right front step 40R and its vicinity of the embodiment of the rice transplanter in the present invention, the left front step 40L and the right front step 40R are provided with raised portions, and the left hood section 10L, the right hood section 10R, and the front hood section 10F are overlapped so that there is no problem with misalignment between the top and bottom. The right hood section 10R is not aligned with the right front step 40R, but is raised above it with a large overlap.

The four hood points of the upper hood section 10U, front hood section 10F, left hood section 10L, and right hood section 10R, and the two step points of the left front step 40L and right front step 40R are configured so that the upper or front part overlaps the outside at the joint of each part. The lower parts of the front hood section 10F, left hood section 10L, and right hood section 10R are assembled so as to overlap from above on the outside of the central rising part of the left front step 40L and right front step 40R, the lower part of the upper hood section 10U is assembled so as to overlap from above on the outside of the upper part of the left hood section 10L and right hood section 10R, and the rear part of the front hood section 10F is assembled so as to overlap from above on the outside of the front part of the left hood section 10L and right hood section 10R.

By adopting such an overlapping configuration, even if the upper hood section 10U and the front hood section 10F are configured to be removed with a single touch, there is no need to precisely align anything when assembling them; simply placing one over the other makes the work easier and even slight misalignment is not noticeable. Also, by overlapping outward as it moves upward or forward, even if rain or other water falls on it from above, it flows downward without getting in between, improving waterproofing.

As shown in FIG. 18, which is a perspective view of the headlight stay 20S of a rice transplanter according to an embodiment of the present invention, and FIG. 19, which is a perspective view of the headlight stay 20S of a rice transplanter according to an embodiment of the present invention, the headlamp bolt fixing portion is fixed to the engine accessory stay 30 at two points using bolt members 21S of the headlight stay 20S, and the headlamp body of the headlight 20 is fixed to the headlight stay 20S at four points using screws.

As shown in FIG. 20, which is a perspective view of the engine accessory stay 30 of a rice transplanter according to an embodiment of the present invention, FIG. 21, which is a perspective view of the front step stay 50 of a rice transplanter according to an embodiment of the present invention, and FIG. 22, which is a perspective view of the lower column stay 60 of a rice transplanter according to an embodiment of the present invention, the framework around the engine is made up of three parts: the engine accessory stay 30, the front step stay 50, and the lower column stay 60, and this framework forms a frame in a comprehensive sense.

(3) Next, we will explain in more detail the configuration and operation of the rice transplanter according to the embodiment of the present invention.

(3a) A specific description of the radiator cover provided by the right hood section 10R, which is the right front engine hood.

The right hood section 10R is shaped like a box without a lid.

The shape of the left hood portion 10L may be a box shape without a lid.

The bottom of the box has multiple holes drilled into it, the engine radiator 70 is housed inside the box, and the lid of the box is formed by the shroud 70S.

As shown in Fig. 23, which is an explanatory diagram of a radiator cover for a rice transplanter according to an embodiment of the present invention, the engine radiator 70 is located on the right side in a front engine configuration, and the right hood section 10R, which is the right side of the hood, covers the outside, front, rear, and top of the engine radiator 70. In addition, a shroud 70S is provided on the inside of the engine radiator 70, which closes the inside of the right side of the hood, and the right side of the hood and the shroud 70S form a box shape surrounding the engine radiator 70.

By storing the engine radiator 70 in the right side of the hood, it is easy to create a single room that surrounds the engine radiator 70 with the right side of the hood and the shroud 70S, making it easy to create a configuration that does not allow hot air from the engine side to enter and provides good cooling efficiency for the engine radiator 70.

In addition, even if the upper hood section 10U and the front hood section 10F are configured to be removable for engine maintenance, there is no need to open the engine radiator 70 chamber each time maintenance is performed, and there is no need to close the chamber by adjusting any gaps, improving workability and preventing the user from accidentally touching and bending the fins of the engine radiator 70.

(3b) Specific explanation of the relationship between the hood and the left and right straight antenna stays 80L and 80R, which are the front engine straight antenna stays.

As shown in FIG. 24, which is an explanatory diagram of the relationship between the left straight-line antenna stay 80L and the right straight-line antenna stay 80R of the rice transplanter according to the embodiment of the present invention and the hood, the left straight-line antenna stay 80L and the right straight-line antenna stay 80R are configured to be pulled outward from within the range of the upper surface of the left hood section 10L and the upper surface of the right hood section 10R and extend upward. The upper surface of the left hood section 10L and the upper surface of the right hood section 10R each have a notch for passing the left straight-line antenna stay 80L and the right straight-line antenna stay 80R through. In addition, the upper hood section 10U is configured to be sized to fit within the range between the left straight-line antenna stay 80L and the right straight-line antenna stay 80R.

When the upper hood section 10U and the front hood section 10F are removed to perform engine maintenance, the upper hood section 10U can be easily removed at a position between the left rectilinear antenna stay 80L and the right rectilinear antenna stay 80R. In addition, since the left rectilinear antenna stay 80L and the right rectilinear antenna stay 80R are pulled out from the left hood section 10L and the right hood section 10R, respectively, which are not removed each time for simple inspection, an arrangement is realized in which the left rectilinear antenna stay 80L and the right rectilinear antenna stay 80R do not get in the way of maintenance.

The left-side straight-line antenna stay 80L and the right-side straight-line antenna stay 80R are pulled out from the left-side hood section 10L and the right-side hood section 10R, and the straight-line specifications can be accommodated by simply setting the parts depending on whether or not there is a notch for the stays of the left-side hood section 10L and the right-side hood section 10R to pass through. This prevents the parts configuration from becoming complicated, and makes it easy to realize multiple type configurations.

(3c) A specific method for releasing hot air from the center of the upper hood portion 10U, which is the front engine upper hood, so that the hot air can escape to the outside is described.

The upper hood section 10U has vertical walls on the left and right sides of the vehicle body, and the central upper surface rises rearward, so that hot air discharged from the engine radiator 70 and cooling fan on the right side of the engine toward the upper left side of the engine flows rearward from the center of the vehicle body along the inner surface of the upper hood section 10U, changing direction at a 90-degree angle.

As shown in Figures 25 and 26, which are explanatory diagrams (parts 1 and 2) of a method for releasing hot air from the center of the upper hood portion 10U of a rice transplanter according to an embodiment of the present invention, it is desirable to consider the formation of the exterior opening based on the wind flow indicated by the arrows caused by the intake of the engine radiator 70 from the right side and the running wind from the front side. This is because the hot air that has passed through the engine radiator 70 surrounds the engine 210, and such wind flows from the right to the left at the front, top, and rear of the engine 210.

As shown in FIG. 27, which is an explanatory diagram (part 3) of a method for releasing hot air from the center of the upper hood portion 10U of a rice transplanter according to an embodiment of the present invention, the hot air flowing backward along the upper hood portion 10U flows upward and is discharged through gaps in the operator-side panel, such as the hood, and may eventually reach the operator operating the control device 230.

As shown in Figures 28 to 30, which are explanatory diagrams (parts 4 to 6) of a method for releasing hot air from the center of the upper hood section 10U of a rice transplanter according to an embodiment of the present invention, a windshield 91 made of a steel plate or the like and a tarpaulin 92 separate the space between the engine 210 and the operating column section such as the lower column stay 60, so that hot air is less likely to flow toward the operator who is operating the plant, who is located further back than the upper hood section 10U, etc.

As shown in FIG. 31, which is an explanatory diagram (part 7) of a method for releasing hot air from the center of the upper hood portion 10U of a rice transplanter according to an embodiment of the present invention, in order to cover small gaps that may occur even when a windshield 91 is provided, a cushioning material may be attached to the back side of the upper hood portion 10U, or gap countermeasures such as ribs may be used.

By providing a windshield 91 between the engine 210 and the operation column, the hot air flowing toward the rear as described above can be blocked so that it does not flow toward the operator, i.e., the operation panel. In addition, the hot air is released to the outside from openings provided on the left and right sides of the windshield 91 near the top of the upper hood section 10U on the front side of the vehicle body. Such openings are provided on both the left and right sides of the upper hood section 10U in the left-right direction of the vehicle body.

As shown in Figs. 32 to 36, which are explanatory diagrams (Nos. 8 to 12) of a method for releasing hot air from the center of the upper hood portion 10U of a rice transplanter according to an embodiment of the present invention, an additional opening is provided in the upper portion of the upper hood portion 10U in the left-right direction of the vehicle body, based on the position of the windshield plate 91 shown by the dashed line, to a high point above the upper hood portion 10U and in front of the position where the windshield plate 91 is placed, and hot air that tends to stagnate in the high point in front of the windshield plate 91 is released. Since the direction of such an additional opening is the left-right direction of the vehicle body rather than the front-rear direction of the vehicle body, the traveling wind flowing toward the rear is less likely to enter the inside of the vehicle body, and the hot air inside the vehicle body is efficiently dissipated.

Not only is the windshield 91 provided between the engine 210 and the operating column, but an opening is provided in front of the windshield 91, which makes it difficult for hot air generated and flowing from the engine 210 and engine radiator 70 to be transmitted to the operator at the rear, and prevents hot air from accumulating in high places in front of the windshield 91, so the temperature of the air cleaner below the windshield 91 and the temperature around the air cleaner can be kept low. Furthermore, because such openings are opened in the left and right directions, it is difficult for the wind from traveling to enter from the front, and hot air inside the vehicle can be efficiently released.

As shown in Figures 37(a) and 37(b), which are explanatory diagrams (parts 13 and 14) of a method for releasing hot air from the center of the upper hood portion 10U of a rice transplanter according to an embodiment of the present invention, the cross-sectional shape of the additional opening at the top of the upper hood portion 10U is such that water from above, such as raindrops, flows outward and is less likely to penetrate inside, and it is often desirable that the size of the additional opening is such that fingers can be inserted but not the wrist, and that the entire hand cannot be inserted all the way through.

(3d) A specific method for venting hot air from the rear of engine 210, which is a front engine, so that the hot air can escape to the outside is described.

As shown in Figures 38 to 40, which are explanatory diagrams (parts 1 to 3) of a method for releasing hot air from the rear of the engine 210 of a rice transplanter according to an embodiment of the present invention, for example, the opening made of punched metal at the rear of the left hood section 10L is arranged to extend to a position approximately 30 to 40 millimeters behind the position of the windshield 91 and tarpaulin 92 shown by the dashed lines, so that the hot air flowing behind the engine 210 is unlikely to escape almost entirely through the punched metal opening and flow around to the rear operating section.

Not only is the windshield 91 provided above the space between the engine 210 and the operation column of the steering device 230, but the tarpaulin 92 is provided below, and the upper wall of the transmission case is formed at a position between the right engine radiator 70 and the left reserve tank and HST motor. In addition, the lateral opening of the left hood section 10L, which is an additional opening at the rear of the left hood section 10L, is formed to extend to a position slightly rearward in a side view compared to the positions where the windshield 91 and tarpaulin 92 are provided.

In order to shorten the overall length of the vehicle body, a configuration is adopted in which the distance between the engine 210 and the operation column is as small as possible, and although there are parts where the two overlap in a side view, a wall of tarpaulin 92 is provided between the engine 210 and the operation column to cover the operation column, so that the hot air discharged from the engine radiator 70 and flowing around to the rear of the engine 210 is unlikely to flow to the operation panel side or the operator, but is sent to the left side of the vehicle body and efficiently escapes to the outside through the opening of the left hood part 10L. Since the opening of the left hood part 10L is formed to extend to a position slightly rearward in a side view compared to the position where the tarpaulin 92 is provided, even with the wall of the tarpaulin 92, which is not necessarily stable in shape, it is possible to sufficiently prevent the hot air from leaking from the gap between the left hood part 10L and the tarpaulin 92 to the rear operation panel side and the operator side, and the hot air is discharged from the left side of the vehicle body 100.

(3e) A detailed explanation of the air cleaner intake port of the air cleaner intake hose 93 provided for engine 210, which is a front engine.

As shown in Figures 41 to 43, which are explanatory diagrams (parts 1 to 3) of the air cleaner intake of the air cleaner intake hose 93 of the rice transplanter according to an embodiment of the present invention, for example, the additional opening at the top of the right hood section 10R, which is an opening made of punched metal at the top of the right hood section 10R, is expanded to a position about 10 mm lower than the position of the lower end of the intake of the air cleaner intake hose 93, so that cold outside air is efficiently sucked into the air cleaner. It is preferable not to open the side of the intake of the air cleaner intake hose 93 so that water is less likely to enter directly.

The air cleaner intake hose 93 extends from the air cleaner body located at the top center of the engine 210, and the intake port of the air cleaner intake hose 93 is located above the engine radiator 70 on the right side of the vehicle body. The intake port of the air cleaner intake hose 93 is located inside the room of the right hood section 10R and shroud 70S that surround the engine radiator 70 in a box shape. A wall is formed by the right hood section 10R on the side of the intake port facing the right side of the vehicle body so that a certain amount of space is secured as an air gap, and the opening of the right hood section 10R is located slightly below the lateral position of the intake port.

By providing the air cleaner intake port inside the engine radiator 70 room separated by the air cleaner intake hose 93, hot air around the engine 210 is less likely to be sucked into the air cleaner, improving performance. In addition, by providing an opening in the right hood section 10R that communicates with the outside slightly below the wall provided to the side of the intake port, not only is it less likely that rainwater and car wash water will be sucked in, but it is also easier for cool outside air to be sucked in, which is expected to improve performance.

(3f) A detailed explanation of the efficient cooling configuration using the front hood opening of the engine hood 10 of the engine 210, which is a front engine.

As shown in Figures 44 and 45, which are explanatory diagrams (part 1 and part 2) of an efficient cooling configuration using the hood front opening of the engine hood 10 of a rice transplanter according to an embodiment of the present invention, the front additional opening of the front hood section 10F is provided in a range of about 1/3 to 1/2 of the upper front side of the front side of the front hood section 10F.

Specifically, an opening is provided in the upper front part of the engine hood 10 at a height of about 1/3 to 1/2 of the height of the upper front surface of the front hood section 10F, and in addition, as described below, an opening such as a slit is provided in the area around the lower part of the headlight 20, above the corners that are the transition areas from the front hood section 10F to the left hood section 10L and the right hood section 10R.

These openings are made up of grooves or holes with a width of 5.5 mm or less, not only to exhaust the hot air flowing in front of the engine 210, but also to take in the wind coming from the front while the vehicle is moving.

If the front opening described above is too wide, more air will be taken in and the volume and speed of the wind expelled from the left side will increase, and when the driving speed is high, hot air may reach the operator and cause discomfort. Conversely, if the opening is too narrow, not enough outside air will be taken in, which may cause the cooling effect of the engine 210 and its surroundings to deteriorate, so an adjustment function may be implemented to increase or decrease the opening area.

As shown in Figures 46 to 48, which are explanatory diagrams (parts 3 to 5) of an efficient cooling configuration using the hood front opening of the engine hood 10 of a rice transplanter according to an embodiment of the present invention, the additional front opening of the left hood section 10L or the right hood section 10R is provided, for example, on the lower or upper side to the left of the headlight 20 of the left hood section 10L. Such an opening is composed of a groove or hole with a width of 5.5 mm or less. This is to exhaust a large volume of hot air flowing above the engine 210 toward the headlight 20 diagonally forward.

By utilizing the engine radiator 70 arranged on the right side of the engine 210, which is a front engine, in a configuration in which hot air flows from the right side to the left side, the amount of hot air flowing toward the upper left front side is often the largest. Therefore, when the vehicle is traveling, the traveling air enters through the openings provided in the front upper part of the engine hood 10 and collides with a large amount of hot air, thereby exerting a cooling effect. Furthermore, since the air entering through such openings also generates a flow that pushes the internal hot air out of the openings of the left hood part 10L, for example, when a traveling load is generated and a lot of heat is generated from the engine 210, efficient cooling is realized. When the vehicle is not traveling, the traveling air does not exist as the vehicle body is stopped, and no air enters from the outside, but most of the hot air flowing from the engine radiator 70 goes directly to the outside through the above-mentioned openings, so the cooling effect can be improved even when the vehicle body 100 is stopped.

(3g) The front and rear two-piece structure of the upper hood section 10U of the engine 210, which is a front engine, is specifically explained.

As shown in Figs. 49(a) to 49(c), which are explanatory diagrams (parts 1 to 3) of the front-rear two-part structure of the upper hood part 10U of the rice transplanter according to the embodiment of the present invention, the upper hood part 10U is divided in the front-rear direction just before the position where the windshield 91 is located. The front and rear parts formed by the division are concave and convex, respectively, and these parts are assembled by overlapping each other, and a small vertical gap is provided at the point where the concave and convex shapes overlap on the front-rear line, forming an opening in the left-right direction due to the gap caused by the assembly. At the point where the concave and convex shapes overlap, the high rear side is overlapped on the low front side from above and assembled. Not only can the engine 210 be maintained by simply removing only the front part by sliding it forward, but a clearance is provided between the convex rear part that remains unremoved and the air cleaner directly below, so that the filter can be easily replaced by tilting and lifting the air cleaner.

The large upper hood section 10U is divided in the front-to-rear direction, and maintenance of the engine 210 can be performed by removing only the front section, improving workability by realizing easy hood removal. A gap is formed where the front and rear sections are overlapped and assembled so that openings in the left-right direction of the upper hood section 10U are provided. This configuration eliminates the need for a slide section in the molding die for the upper hood section 10U, realizing an inexpensive configuration. Since the higher side is overlapped on the lower side when assembled, rain or car wash water flowing from above is less likely to reach the engine 210 inside the hood.

(3h) Explain in detail how to remove heat from engine 210, which is a front engine.

By providing a slit on the front of the engine hood 10, the exhaust gas trapped inside the hood can be drawn in by the wind while driving to dissipate heat, but depending on the slit position and width, it may not be possible to dissipate heat, and depending on the amount of air drawn in, hot air may flow toward the operator.

The following is a more detailed explanation of the internal bonnet configuration suitable for exhaust heat from the engine 210.

As shown in FIG. 50, which is an explanatory diagram (part 1) of a heat exhaust method for the engine 210 of a rice transplanter according to an embodiment of the present invention, a heat shield is provided between the front hood section 10F, which is the lower hood, and the engine 210. The wind that enters through the slits in the front hood section 10F is unlikely to flow to the operator, and instead flows to the upper hood section 10U, which is the upper hood.

The heat shield is made of aluminum. It absorbs the effects of the temperature generated by the engine 210, so when the vehicle is moving, the cooling effect is increased by the air cooling of the heat shield itself due to contact with the wind caused by the vehicle.

As shown in FIG. 51, which is an explanatory diagram (part 2) of the heat exhaust method of the engine 210 of the rice transplanter according to the embodiment of the present invention, the heat shield can move along rails provided on the left hood section 10L and the right hood section 10R. The volume of air flowing from the front hood section 10F and the volume of air flowing through the heat shield to the upper hood section 10U can be adjusted.

As described above, the heat shield can move along rails provided on the left hood section 10L and the right hood section 10R, making it possible to adjust the volume of air flowing from the front hood section 10F and the volume of air flowing through the heat shield to the upper hood section 10U. Because the volume of air can be adjusted in this way, it is possible to adjust the exhaust heat and the outflow of hot air to the operator, taking into account the travel speed and weather.

As shown in FIG. 52, which is an explanatory diagram (part 3) of the heat exhaust method for the engine 210 of the rice transplanter according to the embodiment of the present invention, the lever attached to the heat shield is protruded from the column cover. This allows easy operation at the operator's fingertips.

As shown in FIG. 53, which is an explanatory diagram (part 4) of the heat exhaust method of the engine 210 of the rice transplanter according to the embodiment of the present invention, by moving the lever described above in the vertical direction, the heat shield is slid in the direction indicated by the arrow. The movement path of the heat shield and the movement path of the lever are the same, so there is almost no chance of operating errors.

As shown in FIG. 54, which is an explanatory diagram (part 5) of the heat exhaust method of the engine 210 of the rice transplanter according to the embodiment of the present invention, the heat shield is connected to the motor by an arm. The heat shield can be electrically driven.

Thermocouples are placed along the edge of the monitor panel. The measured temperature of the air reaching the operator is displayed on the LCD monitor. The temperature affecting the operator is visualized.

In a configuration in which the above-mentioned LCD monitor is used, if the measured temperature exceeds a predetermined temperature, a visual or audible high temperature warning is output to the operator. Safety is improved.

By automatically adjusting the position of the heat shield with a motor based on the temperature detected by the thermocouple, not only is heat exhaust efficient, but the escape of hot air to the operator is also prevented. Real-time control is performed so that the heat shield is moved to a position where hot air does not reach the operator and heat is exhausted efficiently.

The work vehicle of the present invention can achieve higher workability in maintenance work involving the installation and removal of the engine hood, and is useful for use in work vehicles such as rice planters.

LIST OF SYMBOLS 10 ENGINE HOOD 10U UPPER HOOD SECTION 10F FRONT HOOD SECTION 10L LEFT HOOD SECTION 10R RIGHT HOOD SECTION 10P PANEL HOOD 11U, 11F HOOK MEMBERS 11L, 11R BOLT MEMBER 12U, 12F HOOK RETAINER MEMBER 12L, 12R BOLT FASTENING MEMBER 20 HEADLIGHT 20S HEADLIGHT STAY 21S BOLT MEMBER 30 ENGINE ACCESSORIES STAY 30L LEFT ENGINE ACCESSORIES STAY FRAME 30R RIGHT ENGINE ACCESSORIES STAY FRAME 30B ENGINE ACCESSORIES STAY BAR 40L LEFT FRONT STEP 40R RIGHT FRONT STEP 50 FRONT STEP STAY 60 LOWER COLUMN STAY 61 BAR MEMBER 70 ENGINE RADIATOR 70S SHROUD 80L LIGHT DIRECTION ANTENNA STAY 80R RIGHT DIRECTION ANTENNA STAY 91 WINDSHIELD 92 TARPAULIN 93 AIR CLEANER INTAKE HOSE 100 Body 210 Engine 220 Travel device 221 Front wheel 222 Rear wheel 230 Steering device 240 Seedling planting device 241 Seedling planting tool 242 Seedling carrier 250 Fertilizer application device 260 Land leveling device 261 Land leveling rotor member 262 Land leveling float member

Claims (4)

An engine (210) provided at the front side of the vehicle body (100);
An engine hood (10) covering the engine (210);
Equipped with
The engine hood (10) has an upper hood portion (10U) removably attached to the vehicle body (100), a front hood portion (10F) removably attached to the vehicle body (100), a left hood portion (10L) fixed to the vehicle body (100), and a right hood portion (10R) fixed to the vehicle body (100),
An overlapping portion is formed extending downward from the left end portion of the upper hood portion (10U), and an upper end portion of the left hood portion (10L) is formed as an overlapping portion. By overlapping the respective overlapping portions, the upper hood portion (10U) is overlapped on the left hood portion (10L) from the outside with a gap therebetween,
An overlapping portion is formed extending downward from the right end portion of the upper hood portion (10U), and an upper end portion of the right hood portion (10R) is formed as an overlapping portion. By overlapping the respective overlapping portions, the upper hood portion (10U) is overlapped on the right hood portion (10R) from the outside with a gap therebetween,
An overlapping portion is formed extending rearward from the left end portion of the front hood portion (10F), and the front end portion of the left hood portion (10L) is formed as an overlapping portion. By overlapping the respective overlapping portions, the front hood portion (10F) is overlapped on the left hood portion (10L) from the outside with a gap therebetween,
A work vehicle characterized in that an overlap is formed extending rearward from the right end of the front hood portion (10F), and the front end of the right side hood portion (10R) is formed as an overlap, and the overlaps are overlapped with each other, so that the front hood portion (10F) is overlapped on the right side hood portion (10R) from the outside with a gap between them. An overlap space is formed extending upward from the left front step (40L), and the lower end of the left hood portion (10L) is formed as an overlap space. By overlapping the respective overlap spaces, the left hood portion (10L) is overlapped on the left front step (40L) from the outside with a gap therebetween,
The work vehicle according to claim 1, characterized in that an overlap is formed extending upward from the right side front step (40R), the lower end of the right side hood portion (10R) is formed as an overlap, and by overlapping the respective overlaps, the right side hood portion (10R) is overlapped on the right side front step (40R) from the outside with a gap therebetween. An engine accessory stay (30) erected on the front side portion of the vehicle body (100);
a headlight (20) fixed to the engine accessory stay (30) by utilizing fastening of a bolt member (21S);
Equipped with
The engine accessory stay (30) includes a left engine accessory stay frame (30L) erected on the left side of the vehicle body (100), a right engine accessory stay frame (30R) erected on the right side of the vehicle body (100), and an engine accessory stay bar (30B) provided so as to bridge between the left engine accessory stay frame (30L) and the right engine accessory stay frame (30R),
The upper hood portion (10U) is removably attached to the engine accessory stay bar (30B) by utilizing the engagement of a hook member (11U),
the front hood portion (10F) is removably attached to the left engine accessory stay frame (30L) and the right engine accessory stay frame (30R) by utilizing a hook member (11F) engaged therewith;
The left side hood portion (10L) is fixed to the left side engine accessory stay frame (30L) by utilizing fastening of a bolt member (11L),
The right side hood portion (10R) is fixed to the right side engine accessory stay frame (30R) by utilizing fastening of a bolt member (11R),
3. The work vehicle according to claim 2, wherein the headlight (20) is fixed to the engine accessory stay bar (30B) via a headlight stay (20S) . The right side hood portion (10R) covers the outside, front, rear, and upper portions of the engine radiator (70), and a shroud (70S) is provided on the inside of the engine radiator (70), thereby forming a box shape surrounding the engine radiator (70),
A windshield (91) is provided between the engine (210) and the operating column section,
a heat shield is provided movably to a space between the front hood portion (10F) and the engine (210), a space between the upper hood portion (10U) and the engine (210), and a space between the operation column portion and the engine (210);
The heat shield can move along rails provided on the left hood portion (10L) and the right hood portion (10R),
4. The work vehicle according to claim 3, wherein the heat shield is automatically moved by a motor based on the temperature detected by a thermocouple so that exhaust heat and outflow of hot air to the operator are regulated.